CN102402802A - Driving recorder - Google Patents

Abstract

The drive recorder (D) of the present invention is provided with: a video camera (2) installed in the vehicle, an acceleration sensor (3) capable of detecting at least the acceleration of the two axes of the front, rear, left, and right of the vehicle, and a camera for storing images captured by the camera. and a storage mechanism (4) for the acceleration detected by the acceleration sensor, wherein photography and acceleration detection are started when the auxiliary power supply of the vehicle is turned on, and a file containing the captured image information is sequentially generated every predetermined photography time, and the The old file is replaced with a sequentially generated file and stored in the storage mechanism, and the acceleration detected by the acceleration sensor exceeds a specified threshold as a condition, or the acceleration detected by the acceleration sensor exceeds a specified threshold within a fixed time. When the conditions are met, image capture is performed for a predetermined time, and a file containing image information captured at the time when the threshold value is exceeded and within the predetermined time is generated and stored in the storage mechanism, so that the cause of the accident can be easily determined.

Description

driving recorder

technical field

The present invention relates to a drive recorder which stores the running conditions of a vehicle.

Background technique

这种驾驶记录器，如JP2008221969A、JP2008221970A公报、JP2008225735A、JP2008225976A、JP2008225977A、JP2008226075A、JP2008257616A、JP2008257617A、JP2008257618A中公开的那样，设有：设于二轮机动车的摄影机、用来检测二轮机动车的加速度的The acceleration sensor and the storage mechanism used to continuously store the images taken by the camera take the fact that the acceleration data exceeds the threshold value for a fixed period of time as a trigger condition (triga), read the image stored in the storage mechanism and detect the trigger condition Before and after images are stored to the memory card.

Contents of the invention

In the conventional drive recorder as mentioned above, the image information captured before and after the time when the condition is satisfied is stored in the memory card, so it is possible to capture a part of the cause of the accident, but sometimes it is impossible to determine the cause of the accident from before the accident occurs. .

And because only the image information at the time of the accident is reserved in the memory card, the user cannot refer to the image information other than the accident, and cannot use it to improve his driving skills or enjoy the scenery around the road. Furthermore, in the conventional drive recorder, when the acceleration does not exceed the threshold value and an accident occurs, image information may not be recorded in the memory card.

Here, the present invention is proposed in order to improve the above-mentioned disadvantages. As its first object, it is to provide a drive recorder that can easily determine the cause of an accident and can refer to image information other than when the accident occurred. A second object of the invention is to provide a drive recorder capable of accurately distinguishing the occurrence of an accident and storing image information at the time of the accident.

In order to achieve the above-mentioned first object, the solution to the first problem of the present invention is characterized in that: a camera installed in the vehicle, an acceleration sensor capable of detecting the acceleration of at least two axes of the vehicle, front, rear, left, and right, and a In the driving recorder of the storage mechanism that stores the images captured by the camera and the acceleration detected by the acceleration sensor, when the auxiliary power supply of the vehicle is turned on, the imaging and acceleration detection are started, and the recorded images are sequentially generated every predetermined imaging time. For the file of image information, the old file is replaced with the file generated sequentially and stored in the storage mechanism, and the acceleration detected by the acceleration sensor exceeds a predetermined threshold as a condition, or the acceleration detected by the acceleration sensor exceeds a predetermined threshold for a fixed time. The threshold is used as a condition, and when the condition is met, image capturing is performed for a predetermined time, and a file including image information captured at the time when the threshold is exceeded and within the predetermined time is generated and stored in the storage means.

According to the drive recorder in the solution to the first problem, the image information is stored as a file in the storage mechanism even when an accident occurs, and when an accident occurs and an acceleration exceeding a threshold value is detected, in the presence of an accident In the case of image information captured before the accident and used as a file, the image information captured before the accident and used as a file is added to the image information captured within the specified time from the occurrence of the accident to after the accident. They are stored together as a file in the storage mechanism. Therefore, the image information captured for a long time from before the accident to after the accident is retained in the storage mechanism as a file, and a part of the cause of the accident can be confirmed, which is easy. Determine the cause of an accident without losing important image information that can determine the cause of the accident.

Furthermore, since the image information other than the time of the accident is also stored in the storage means, the user can refer to the image information other than the accident, which can be used to improve his own driving skills and enjoy the scenery around the driving road.

Moreover, in order to achieve the second object, the second problem solving means of the present invention is characterized in that, on the basis of the first problem solving means, the power supply from the vehicle power supply is cut off is added to the condition, and the power supply is cut off when the power supply is cut off. The image capture for a predetermined time generates a file including image information captured at the time when the power supply is cut off and within the predetermined time, and stores the file in the storage means.

According to the drive recorder in the solution to the second problem, in addition to detecting the accident based on the acceleration, when any abnormality occurs in the motorcycle and the power supply is cut off halfway, the situation continues for a predetermined period of time from the occurrence of the situation. By performing photography and acceleration detection, creating a file, and storing the file in the storage mechanism, even if the accident detection cannot be performed based on the acceleration, the possibility of detecting a two-wheeled vehicle overturning or contact accident is improved, and it is possible to The occurrence of an accident is recognized with good accuracy and the image information at the time of the accident is stored.

Furthermore, when the power supply from the driving vehicle power supply is cut off halfway, a file is generated and stored in the storage mechanism. Therefore, even if the user parks the vehicle and turns off the auxiliary power supply, if the shooting time is not met, the file will be saved at the end of the drive. The file can be generated and stored in the storage mechanism without the user's operation, which is convenient and does not miss the preservation of the captured image.

Description of drawings

FIG. 1 is a front-side isometric view of a drive recorder in one embodiment.

FIG. 2 is a rear isometric view of the drive recorder in one embodiment.

Fig. 3 is a cross-sectional view of the drive recorder in one embodiment.

Figure 4 is an isometric view of a mount on a housing side bracket in one embodiment.

Fig. 5 is an isometric view of a vehicle side bracket in one embodiment.

Fig. 6 is a perspective view of the drive recorder according to the embodiment in a state where the rear end side cover is opened.

Fig. 7 is an exploded perspective view of the drive recorder in one embodiment viewed from below.

Fig. 8 is an exploded perspective view of wires connecting the drive recorder to a vehicle power source in one embodiment.

Fig. 9 is a circuit diagram of electric wires connecting the drive recorder and the vehicle power source in one embodiment.

Fig. 10 is a perspective view of wires connecting the drive recorder in one embodiment to a vehicle power source.

FIG. 11 is a diagram showing a hardware configuration of a drive recorder according to an embodiment.

FIG. 12 is an example of a block diagram showing a part of operations in the drive recorder according to one embodiment.

FIG. 13 is an example of a block diagram showing a part of operations in the drive recorder according to one embodiment.

Detailed ways

Hereinafter, the present invention will be described based on the illustrated embodiments. The driving recorder D in one embodiment, as shown in FIGS. The storage device 4 as a storage mechanism of the acceleration detected by the captured image and the acceleration sensor 3, and the control device 5 for controlling them. It is accommodated in a case 1 and is installed on a two-wheeled vehicle through the case 1 .

The details will be described below. The housing 1 is provided with: a cylindrical housing body 10 that accommodates the camera 2, the acceleration sensor 3, the storage device 4 and the control device 5 inside; The vehicle side bracket 7 is a housing side bracket 11 that can be freely assembled and disassembled; a photographic window 12a is provided, and a front end cover 12 is used to block the front end opening of the housing body 10; The rear end cover 13; the opening 14 provided in the lower part of the housing body 10; and the partition member 19 for blocking the opening 14.

The casing side bracket 11 is provided with: a holding ring 11a holding the outer periphery of the casing body 10, a ring nut 11b rotatably provided at the lower part of the holding ring 11a, a mounting piece 11c having a pair of claws 11d, 11d, And the disk 11e provided on the upper part of the mounting member 11c is a cylindrical shape with a threaded part on the outer circumference and one end is closed, and is screwed to the ring nut 11b. When the disc 11e is screwed into the deepest part of the ring nut 11b, the ring nut 11b cannot rotate relative to the holding ring 11a, and by being configured in this way, the mounting part 11c on the housing side bracket 11 is allowed to rotate relative to the housing body 10 It can be rotated horizontally and can be fixed in any orientation.

As shown in Figures 1 and 2, the vehicle side bracket 7 is provided with a bracket detachable part 7a that holds the mounting part 11c of the housing side bracket 11, is integrated with the bracket detachable part 7a, and is attached to the handle H of the two-wheeled vehicle. The grip part 7b for gripping. The vehicle side bracket 7 can rotate around the handle H as an axis, and can adjust the installation attitude of the handle H. Moreover, the bracket detachable part 7a is formed as a U-shaped socket, and by inserting the mounting part 11c of the housing side bracket 11 from the side, the mounting part 11c is embraced by the bracket detachable part 7a and integrated, and the main body part When 11a is completely inserted into the bracket attaching and detaching part 7a, the claws 11d, 11d engage with the claws 7c, 7c provided at the rear end of the bracket attaching and detaching part 7a, so that the housing side bracket 11 is fixed on the vehicle side bracket 7. When the claws 11d, 11d are pushed close to each other, the engagement with the claws 7c, 7c of the bracket attachment and detachment part 7a is released, so that the mounting part 11c can be pulled out sideways from the bracket attachment and detachment part 7a to remove the case. The body side bracket 11 is detached from the vehicle side bracket 7 .

Front end cover 12 is provided with photography window 12a, thus can use video camera 2 to take a picture of the front end side front of housing 1 from inside housing 1, in this case, lens 15 is installed on photography window 12a, and between lens 15 and front end cover 12 It is sealed by an unillustrated sealing member. Therefore, in this case, the camera 2 is installed on the front end side of the housing main body 10 with the imaging direction as the front end side of the housing main body 10 , and can take pictures through the lens 15 .

If the camera 2 is provided with a lens alone, or when no lens is required, it is only necessary to block the photographing window 12a with a transparent plate made of resin or glass. Also, in this case, the camera 2 is a CCD camera provided with a CCD (charge coupling device, not shown), but other than this, for example, a camera using a CMOS (Complementary Metal Oxide Semiconductor) may also be used.

Moreover, the vehicle side bracket 7 can rotate relative to the handle H, and then the housing body 10 can rotate laterally relative to the housing side bracket 11, so that the installation position of the housing body 10 relative to the two-wheeled vehicle and the camera 2 can be adjusted arbitrarily. The shooting direction of the camera 2 enables the camera 2 to take pictures in the range that the user wishes to take pictures.

The rear end cover 13 is engaged with the rear opening of the housing body 10 by pins, as shown in FIGS. 2 and 6 , and can open and close the rear opening of the housing body 10 .

Furthermore, the rear cover 13 is provided with a display unit 17 and operation buttons 18, and the display unit 17 can display the setting status of the functions of the drive recorder D and information necessary for operation. Furthermore, various functional settings of the drive recorder D can be performed by the user operating the operation button 18 .

In addition, an annular sealing ring 13a is installed on the outer periphery of the rear end cover 13, and when the rear end opening of the housing body 10 is closed with the rear end cover 13, the sealing ring 13a is closely attached to the opening end of the housing body 10. Around, to prevent water or dust from intruding into the housing body 10 . When closing the housing body 10 with the rear end cover 13, the hook 13b fixed on the top of the rear end cover 13 with a pin is hung on the hook 10a located at the upper end of the housing body 10, so that the rear end cover 13 can be It is fixed to the rear opening of the housing body 10 .

An insertion port 31 for inserting an SD memory card 33 constituting a part of the storage device 4 is provided at the rear end of the housing body 10 , and the SD memory card 33 is inserted into the insertion port 31 and connected to a card connector 32 .

Next, a substantially rectangular opening 14 is provided at the lower portion of the housing body 10 , and the opening 14 is blocked by a partition member 19 . The partition member 19 is provided with a small window 19a so that the power supply terminal 6 faces the small window 19a so that the power supply terminal 6 can be connected to the power supply terminal 6 through the small window 19a from the outside. In addition, a speaker 20 is fixed to the partition member 19 , and the speaker 20 can emit an alarm sound based on an instruction from the control device 5 .

Furthermore, the small window 19a is surrounded by an annular groove 19b in which an annular seal 21 is fitted.

The power supply terminal 6 is connected to the wire-side terminal 23c provided at the end of the recorder-side wire C1, and the recorder-side wire C1 is connected to the power-side wire C2 connected to the vehicle power supply. , supply power to power terminal 6 from the vehicle power supply. The electric wires mentioned in the present invention are composed of a recorder-side electric wire C1 and a power-supply-side electric wire C2.

In this way, in the driving recorder D of this embodiment, the power terminal 6 is provided at the lower part of the casing body 10, and even when driving on a rainy day, the probability that the connection portion between the power terminal 6 and the wire terminal 23c is drenched by rainwater can be reduced. , so the reliability and practicability of the drive recorder D can be improved, and further, the life of the drive recorder D can be improved.

In this case, the power supply terminal 6 is a plug-type terminal composed of six pins, and the electric wire terminal 23c is composed of six socket-type pins inserted into the above-mentioned pins. And this electric wire terminal 23c is held by connector 23, and this connector 23 can fit in the small window 19a that is provided at the end portion of the electric wire main body 22 of recorder side electric wire C1, and this connector 23 is provided with sealing member 21. The opposing root portion 23a, and the front end portion 23b raised from the root portion 23a is inserted into the small window 19a and holds the electric wire terminal 23c. One of the socket pins of the electric wire terminal 23c is dummy, and one of the pins of the power supply terminal 6 is also dummy.

The recorder side electric wire C1 is connected to the power supply terminal 6 as described above and integrated with the case body 1 as described later, and extends outward from the lower part of the case body 10, but if it is not supported in this state The recorder-side electric wire C1 may swing due to the vibration during the running of the motorcycle, and a large bending stress or the like may repeatedly act on the mounting portion and the like attached to the root portion 23a of the connector 23 of the electric wire main body 22, and the like. Deterioration occurs in advance. Here, in this drive recorder D, as shown in FIG. The wire holding portion 11f holds the recorder-side wire C1, thereby suppressing repeated action of large bending stress on the recorder-side wire C1 and suppressing deterioration of the recorder-side wire C1, thereby prolonging the life of the drive recorder D. The electric wire holding part only needs to be provided on the case 1, so it can be provided on the case body 10 other than the case side bracket 11, and it can not only hold the recorder side electric wire C1, but also can The power supply side wire C2 is maintained. Furthermore, the shape of the wire holding portion 11 f is not limited to the above-mentioned hook shape, as long as it can hold the recorder-side wire C1 or the power-side wire C2 .

In addition, in the drive recorder D of the present embodiment, electric wires for supplying power to the video camera 2, the acceleration sensor 3, and the storage mechanism 4 housed in the housing 1 and which may swing due to vibration of the vehicle body are on the recorder side. Compared with the conventional drive recorder, the electric wire C1 and the electric wire C2 on the power supply side connected thereto have fewer electric wires, which reduces the chance of damage to the electric wires. Moreover, the electric wire C1 on the recorder side or the electric wire C2 on the power supply side is provided in the casing. 1 of the wire holding part 11f, so that the recorder side wire C1 and the power side wire C2 connected to it will not swing greatly when the vehicle body vibrates, and the connection between the recorder side wire C1 and the power side wire C2 connected to it is suppressed. deteriorating.

In this way, the deterioration of the recorder-side electric wire C1 and the power-supply-side electric wire C2 connected thereto can be suppressed, and therefore, the problem of high maintenance cost due to frequent replacement of electric wires is improved.

In other words, the recorder side electric wire C1 is provided with: the electric wire main body 22 provided with five lead wires not shown inside, the electric wire side terminal 23c provided at one end of the electric wire main body 22, and the other end provided on the electric wire main body 22. The 5-pin miniature universal serial bus (miniUSB) socket (resektabur) 24 of the terminal of one end, the pin pin of miniature universal serial bus socket 24 is respectively connected with the socket type pin pin of corresponding electric wire side terminal 23c by above-mentioned 5 wires . The micro USB socket 24 is provided with a power pin 24a, an ID pin 24d, a GND pin 24e, and two signal pins 24b, 24c which are connected to the vehicle power supply through the power supply side wire C2 described later. Either type A or type B can be used for the micro USB socket 24 .

And, as shown in Fig. 8 and Fig. 9, the power supply side wire C2 is provided with: two terminals 26, 27 connected with the vehicle power supply at one end, and two terminals 26, 27 located at the other end as capable of connecting with the miniature universal serial bus socket 24. The 5-pin miniature universal serial bus connector 25 of the connected terminal, the step-down DC/DC converter 28 located in the middle, the input terminal 28a used to connect the terminals 26 and 27 to the DC/DC converter 28 respectively , two wires 29a, 29b connected by 28b, the wire 30a that is used to connect the output terminal 28c of the DC/DC converter 28 with the power supply pin 25a and the ID pin 25d of the miniature universal serial bus connector 25, and A wire 30b for connecting the GND pin 28d of the DC/DC converter 28 to the GND pin 25e of the micro USB connector 25. The two signal pins 25b, 25c of the miniature USB connector 25 are not connected to anything and are left unused. In this embodiment, the micro USB socket 24 is provided on the recorder side electric wire C1, and the micro USB connector 25 is provided on the power supply side electric wire C2, however, on the contrary, the recorder side electric wire A micro USB connector may be provided on C1, and a micro USB socket may be provided on the power supply side wire C2.

The DC/DC converter 28 is set to drop the 12V vehicle power supply to the operating voltage of the drive recorder D, so that the vehicle power supply can be used as the power supply of the drive recorder D. When the drive recorder D operates with the vehicle power supply voltage, the DC/DC converter 28 can also be abolished.

Furthermore, the outer circumference of the micro USB socket 24 is rotatably provided with a cylindrical coupling 40 having a threaded portion on the inner circumference, and a coupling 40 with the coupling 40 is also provided on the outer circumference of the micro USB connector 25. The socket 41 screwed on the inner periphery is firmly integrated with the micro USB socket 24 and the micro USB connector 25 by screwing the coupler 40 and the socket 41 while keeping them connected. The connection part is accommodated in the coupler 40 so that it will not be interfered by rainwater, dust and the like.

In addition, on the outer periphery of the miniature USB socket 24 and the outer periphery of the miniature universal serial bus connector 25, as shown in FIG. 10, respectively, as shown in FIG. The through-holes 42, 43 allow the micro-USB socket 24 and the micro-USB connector 25 to be fixed to the frame or the handle of the two-wheeled vehicle by using the binding band B or the like.

Like this, by arranging through holes 42, 43, one or both of the miniature universal serial bus socket 24 and the miniature universal serial bus connector 25 can be fixed on any position of the two-wheeled vehicle, therefore, can reliably prevent the miniature universal serial bus The bus socket 24 and the miniature universal serial bus connector 25 are not constrained and may hit various parts of the two-wheeled vehicle due to the vibration during the running of the two-wheeled vehicle, so that the deterioration of the driving recorder D can be suppressed, and the driving recorder D can be extended. lifespan.

Furthermore, since one or both of the miniature USB socket 24 and the miniature Universal Serial Bus connector 25 can be fixed on any position of the two-wheeled vehicle, the recorder side electric wire C1 and the power supply side electric wire C2 connected thereto are connected to each other. When the vehicle body vibrates, no large swing occurs, and deterioration of the recorder-side electric wire C1 and the power-supply-side electric wire C2 connected thereto is suppressed. In this way, since deterioration of the recorder-side wire C1 and the power-side wire C2 connected thereto is suppressed, the problems of frequent replacement of wires and high maintenance costs are also improved in this regard.

In addition, because through holes 42, 43 are provided, one or both of the micro USB socket 24 and the micro USB connector 25 can be easily fixed on any part of the two-wheeled vehicle, thereby improving the driving record. The mountability of device D. The micro USB receptacle 24 and the micro USB connector 25 are connected and used, therefore, the through holes 42 and 43 may be provided on either side.

Insert the front end 23b of the connector 23 on the recorder side electric wire C1 into the small window 19a, and after connecting the power supply terminal 6 and the electric wire side terminal 23c, push the base 23a toward By pressing downward, the connector 23 is fixed to the partition member 19, and the recorder-side electric wire C1 is integrated with the casing 1 .

At this time, since the upper surface of the root portion 23a of the connector 23 is closely attached to the sealing member 21, the space between the partition member 19 and the connector 23 as a part of the housing 1 is tightly sealed, and water or dust can be reliably prevented from opening through the small window 19a. Intrusion, even when driving in rainy weather, the connection between the power terminal 6 and the wire terminal 23c will not be rained, which can further improve the reliability and practicability of the drive recorder D, and further prolong the life of the drive recorder D.

After the connector 23 is fixed in this way, the decorative plate 44 is fitted into the opening 14, and the opening 14 is covered by screwing, so that the connection between the partition member 19 and the connector 23 is hidden and the appearance of the drive recorder D is improved. The decorative plate 44 has a plurality of long holes not shown in consideration of not blocking the sound emitted from the speaker 20 .

The power terminal 6 is connected to the control device 5 provided in the housing body 10 . The control device 5 is connected to the video camera 2, the acceleration sensor 3, the card connector 32, the display unit 17, and the operation buttons 18 through an interface not shown, so that the power supply terminal 6 can be connected to the video camera 2, the acceleration sensor 3, and the card through the control device 5. The device 32, the display unit 17, and the operation buttons 18 supply power.

And, control device 5 is for example shown in Figure 11, is provided with: CPU (Central Processing Unit) 51; RAM (Random Access Memory) 52 that provides storage area to above-mentioned CPU 51; Interface 54, and this interface 54 is connected with camera 2, acceleration sensor 3, The display unit 17 and the operation button 18 are connected; ROM (Read Only Memory) 55, the ROM 55 is an application program implemented by the CPU 51 in order to control the camera 2, the acceleration sensor 3 and the storage device 4 to perform the functions of the drive recorder D and perform the necessary processing. , or the program of the operating system etc. are stored; Furthermore, the storage device 4 is provided with a card connector 32 and an SD memory card 33 , and the storage mechanism is constituted by the control device 5 and the storage device 4 .

Next, the acceleration sensor 3 basically only needs to be able to detect the acceleration of the two-axis acceleration of the front, rear, left, and right of the motorcycle. In the case where more acceleration information is to be obtained, one that can detect the acceleration of the up and down directions of the motorcycle can also be used. 3-axis accelerometer. Furthermore, as the acceleration sensor 3 , specifically, for example, a piezoelectric type, a semiconductor piezoresistive type, an electrostatic capacitance type, or other various acceleration sensors can be used.

Moreover, the acceleration sensor 3 detects the acceleration of the two-axis acceleration of the front, rear, left, and right sides of the motorcycle at a predetermined sampling period, for example, at a period of 10 ms (microseconds), outputs an acceleration signal as an analog voltage signal, and converts the acceleration signal into a digital signal input. Control device 5.

On the other hand, the video camera 2 keeps taking pictures in the shooting range, and converts the taken images into electric signals to output to the control device 5 . Images are interpreted broadly, including animations as well as still images.

As shown in an example of the flowchart of FIG. 12 , the camera 2 continues to take pictures, and the acceleration sensor 3 continues to detect acceleration (step S1). When the control device 5 acquires the image information from the camera 2 and the acceleration information detected by the acceleration sensor 3, it Acceleration information, date and time at the time of the image information are associated (associated) with the image information (step S2). Image information, then all the image information that completes the association label and obtains in the above-mentioned shooting time is summed together to generate a file (steps S3, S4), and it is stored in the SD memory card 33 by the card connector 32 (step S5) . Thereafter, a new file is created in the same order after the image information corresponding to the shooting time is accumulated. In this way, the control device 5 generates files sequentially and stores them in the SD memory card 33. After the above-mentioned files are stored in the SD memory card 33, the old files other than the files prohibited from overwriting are sequentially deleted and stored. document.

This operation starts when the auxiliary power supply of the motorcycle is turned on and power is supplied to the power terminal 6 , and is repeated until the auxiliary power supply is turned off or the acceleration detected by the acceleration sensor 3 exceeds a threshold value.

And, in detail, the miniature USB socket 24 of the recorder side wire C1 is connected with the vehicle power supply and the miniature USB connector 25 of the power side wire C2 that inputs a voltage signal in the ID pin 25d. In the case of connection, when the auxiliary power supply is turned on, the control device 5 detects that one of the pins of the power terminal 6 connected to the ID pin 25d of the micro USB connector 25 through the recorder side wire C1 has a voltage signal. Input, start shooting with the video camera 2 and detect the acceleration with the acceleration sensor 3, create a file and store it in the SD memory card 33, and make each part function as a drive recorder D.

In this regard, when the micro USB socket 24 of the recorder side electric wire C1 is connected with the micro USB connector of the USB line connected to an external device such as a microcomputer not shown in the figure, because the external device There is no input voltage signal on the ID pin of the miniature USB connector, so even if there is power supply on the power terminal 6, due to the There is no voltage signal input on one of the pins, so the control device 5 does not make any one of the video camera 2 and the acceleration sensor 3 work, but makes the SD memory card 33 work as an external storage device of a personal computer, so that The external device side operates files in the SD memory card 33 .

That is, according to the drive recorder D of the present embodiment, it can be judged whether the drive recorder D itself is mounted on the vehicle and requires photography and acceleration detection, or is connected to an external device such as a personal computer and does not require photography and acceleration detection. The state, corresponding to the use of the situation to take action.

Therefore, there is no such thing as starting shooting due to connection with an external device, and a file containing important image information is updated with a new file. When mounted on a vehicle, shooting can be automatically started, and shooting can be prevented from being forgotten.

In this way, the drive recorder D itself operates in accordance with the use situation, so that the user does not need to manually select or control the operation of the drive recorder D, which has the advantage of reducing the burden on the user.

In addition, the shooting time for generating a file can be selected by the user within a certain shooting time span according to the needs of the user. For example, it can be set to specify the shooting time of a file as 15 minutes, 30 minutes, or 60 minutes. , 120 points. That is, for example, in the case where the shooting time is set to 15 minutes, the control device 5 stores the image information of the shooting time, such as acceleration information, date and time, etc. The information is aggregated into a single file and stored in the SD memory card 33 .

Since the photographing time for generating one file can be changed in this way, the photographing time corresponding to the travel time can be specified, and image information desired by the user can be obtained. Furthermore, since it is possible to designate the shooting time corresponding to the driving time, the user can obtain a file containing image information without any seams along the way.

In addition, as shown in an example of the flow chart of FIG. 13, the control device 5 compares the acceleration of the front, rear, left, and right axes of the two-wheeled vehicle output by the acceleration sensor 3 with the threshold values set in advance respectively corresponding to the respective accelerations (step S6); One of the accelerations detected by the acceleration sensor 3 exceeds the above-mentioned threshold value as a condition, when the condition is reached, from the moment when the condition is achieved, in this case, from the moment when the above-mentioned acceleration exceeds the threshold value, continue for a specified time, for example Continuously carry out photography and acceleration detection (step S8) in 10 seconds; Regardless of the photography time of setting, file is generated (step S9); The file that generates is stored in SD memory card 33 (step S10), carry out prohibiting covering simultaneously The processing of the file (step S11); all the processing in the drive recorder D such as the above imaging, acceleration detection, and file generation is completed, and the power supply of the drive recorder D is turned off (step S12). The control device 5 displays the constant acceleration, and when it is judged in step S6 that the acceleration exceeds the threshold value, the subsequent processing is carried out as relay processing. Moreover, the files that have been prohibited from overwriting will not be automatically updated due to the subsequent use of the drive recorder D. Unless the process of prohibiting overwrite is released through manual operation, the drive recorder D itself will not replace it with other files. of the file. Specifically, for example, when writing a new file to the SD memory card 33, when the unused capacity in the SD memory card 33 is not enough to store the new file, as long as the file attribute is confirmed, the overwriting is not prohibited. The file, that is, the file at the old generation time, may store the above-mentioned new file.

Therefore, when an accident occurs while the two-wheeled vehicle is running and an acceleration exceeding the threshold is detected, if there is image information captured before the accident and before being documented, the control device 5 sets the 10 The image information obtained by photographing in seconds is added together with the image information taken before the accident and recorded before the accident, and they are stored in the SD memory card 33 as a comprehensive file. Therefore, by keeping the image information captured in the storage device 4 as a file from before the accident occurs to after the accident, a part of the cause of the accident can be confirmed, not only easy to determine the cause of the accident, but also can determine the accident Important image information for the reason.

In addition, since the overwriting of the above-mentioned file containing the image information captured at the time when the acceleration exceeds the threshold value is prohibited, the above-mentioned file will not be overwritten and lost when restarting shooting after an accident, and it is possible to reliably prevent the accident. Loss of important image information.

Furthermore, since the image information other than the time of the accident is also stored in the storage mechanism, the user can refer to the image information other than the accident, which can be used to improve his driving skills or to enjoy the surrounding scenery of the road he has traveled.

Moreover, after the accident occurs, the power of the drive recorder D is cut off after the photographing for a predetermined time, and all processes such as photographing, acceleration detection, file generation, and file storage are not performed. A document that captures image information of a part of the cause of the accident.

Moreover, in the drive recorder D of this embodiment, the judgment of whether the acceleration exceeds the threshold value in the control device 5 is that when the acceleration sampled by the acceleration sensor 3 at a predetermined sampling period exceeds the threshold value continuously for a predetermined number of times, it is regarded as an acceleration. When the threshold value is exceeded, a file is generated and the file is stored in the storage device 4 . That is, the condition is that the acceleration exceeds a threshold value within a fixed time obtained by accumulating a predetermined number of times in the sampling period, and a file including image information taken for a predetermined time from the time when the condition is satisfied is generated and stored in the storage device. 4 in. In this way, not only the acceleration exceeding the threshold value is regarded as the condition for generating the accident file, but also the acceleration exceeding the threshold value for a fixed time can be used as the condition for generating the accident file. In addition, the above-mentioned fixed time does not mean that it cannot be changed or is permanent, but it is simply called "fixed time" for convenience to distinguish it from the predetermined time that is the shooting time after the condition is satisfied. As will be described later, it can be Changed by user settings.

If the acceleration exceeds the threshold value simply once as a condition, when a sudden large acceleration caused by noise or disturbance during driving is detected, it will be misjudged as an accident. However, as described above, the acceleration exceeds the threshold value for a fixed time as a condition. It has the advantages of eliminating false judgments caused by noise or interference and detecting accidents with high precision.

Furthermore, there is an upper limit on the balance between the sampling cycle and the fixed time, and the above-mentioned predetermined number of times and threshold can be set by the user. In this way, the user can change the predetermined number of times and the threshold value according to the road condition, road surface condition, the style of the vehicle on which the drive recorder D is installed, and the driving habit. Therefore, the control device 5 can communicate with the drive recorder D According to the style of the vehicle, driving habits, driving road conditions, and road surface conditions, it can be judged accordingly.

Furthermore, in the drive recorder D of this embodiment, as described above, after the case 1 is attached to the handle H, etc., the user operates the operation button 18 to push the acceleration sensor 3 toward the vehicle during parking. The initial value of the acceleration detected by the acceleration sensor 3 is used to detect the initial value of the acceleration of the vehicle, and it is stored in the control device 5 as an offset acceleration, and the offset acceleration is removed from the acceleration detected by the acceleration sensor 3. 3 is installed toward the vehicle, and the influence of gravity included in the detected acceleration of the acceleration sensor 3 is removed.

Therefore, the drive recorder of this embodiment can accurately detect the acceleration of the vehicle that depends on the running of the vehicle regardless of the mounting posture of the acceleration sensor 3 , and can accurately detect the occurrence of an accident.

In addition, even if the detection axis of the acceleration sensor 3 is two axes, it is not correctly installed in the front, rear, left, and right directions of the vehicle, and when the detection axis of the acceleration sensor 3 is three axes, it is not correctly installed in the front, rear, left, right, up, and down directions of the vehicle. Even when mounted, the acceleration in each direction of the vehicle can be accurately detected, so it is easy to install the drive recorder D on the vehicle.

Furthermore, in this drive recorder D, a sub power supply 35 is provided in the casing 1, and as shown in an example of the flow chart of FIG. If the threshold is not exceeded, the control device 5 also receives power supply from the auxiliary power supply 35, and performs 10 seconds of photography, acceleration detection (step S8), file generation (step S9), and storage in the SD memory card 33 (step S10). Same action as when the accident happened. That is, in the drive recorder D of this embodiment, the acceleration detected by the acceleration sensor 3 exceeds the threshold value, or the acceleration exceeds the threshold value for a fixed period of time, and the power supply interruption from the vehicle power supply is satisfied as a condition. When the condition is fulfilled, imaging and acceleration detection are continuously performed for a predetermined time from the moment when the condition is fulfilled, in this case, for 10 seconds, and a file is generated regardless of the set imaging time, and the generated file is stored in In SD memory card 33, carry out the processing (step S10, S11) of prohibiting overwriting this file at the same time, cut off the power supply of driving recorder D ( Step S12).

In detail, even if the acceleration does not exceed the threshold, when the two-wheeled vehicle comes into contact with something or falls over and the recorder-side wire C1 or power-side wire C2 connected to the vehicle power supply is disconnected, or the auxiliary power supply is turned off, the The power supply of the vehicle power supply is cut off. Therefore, if there is image information captured before the event occurred and before being documented, the control device 5 will record the image information captured during the next 10 seconds from the event occurred. In the image information, the image information taken before the incident occurred and before being documented is added, and they are stored in the SD memory card 33 as a whole file, and the power of the drive recorder D is turned off.

Therefore, not only accidents are detected based on the acceleration, but even if a certain abnormality occurs in the vehicle and the power supply is interrupted, the image information taken before and after the event can be stored in the storage device 4 as a file, and the vehicle can be confirmed. part of the reason for this situation.

Moreover, even when the power supply is interrupted, the file is generated and stored, so even when the accident detection based on the acceleration cannot be performed, the possibility of detecting the overturning of the two-wheeled vehicle or the contact accident is improved. , can recognize the occurrence of an accident with high precision, and store image information at the time of the accident.

In addition, since the above-mentioned files are prohibited from being overwritten, when the power supply is restored or photography is resumed, information will not be lost due to overwriting, and the loss of image information that may have occurred due to an accident can be reliably prevented. .

Furthermore, since the power supply of the drive recorder D is turned off after the photography for a predetermined time after the interruption of the power supply, none of the processes such as photography, acceleration detection, file generation, and file storage are performed, so there is a possibility that an accident may occur. Files of image information can be securely retained in the storage mechanism.

The sub power supply 35 stores electric power necessary for the video camera 2 to perform imaging for 10 seconds or more, acceleration detection, and file creation and storage in the SD memory card 33 . Therefore, it is possible to securely retain in the storage device 4 files including images that can confirm a part of the cause of the accident, which were taken before and after the accident.

Furthermore, when the power supply from the vehicle power supply is interrupted during driving, the file is generated and stored in the SD memory card 33. Therefore, even after the last storage to the SD memory card 33 is completed, the image captured until the power supply is interrupted When the amount of information is small and the shooting time is less than the shooting time set above and no file is generated, when the user stops the riding vehicle and turns off the auxiliary power supply, the power from the driving vehicle power supply Since the supply is interrupted, the control device 5 receives the power supply from the sub power supply 35 , performs 10-second photography, acceleration detection, and file creation and storage in the SD memory card 33 in the same manner as described above. Therefore, even if the file size is insufficient, the user can generate and store the file in the storage device 4 without any operation at the end of the driving, which is convenient and does not miss saving of the captured image.

In addition, there are two threshold values that can be registered in the drive recorder D with respect to each acceleration of the two axes, and one is used to detect the occurrence of an accident, stop the shooting of the camera 2, generate a file, and store it in the SD memory card 33. One threshold, and the other, although lower than the threshold, can be set to an arbitrary value desired by the user, with an acceleration at a level that does not cause an accident as the warning threshold.

When the corresponding acceleration exceeds the warning threshold, the control device 5 emits a warning sound from the speaker 20 to notify the user driving the vehicle that a dangerous acceleration has been detected. Therefore, in the drive recorder D in this embodiment, when the warning threshold is exceeded, the speaker 20 generates a warning sound. Therefore, when the user hears the warning sound, he will realize that his driving has become rough or his speed has become too high. The fast situation can prevent the occurrence of accidents before they happen.

When judging whether the acceleration exceeds the warning threshold value, the above-mentioned judgment is performed after removing the influence of gravity depending on the installation posture of the housing 1 as described above, so it is possible to accurately determine the acceleration of the user regardless of the installation posture of the housing 1. issued a warning.

Furthermore, as described above, according to the drive recorder D of the present embodiment, image information is stored as a file in the storage means even when an accident occurs, and when an acceleration exceeding a threshold value is detected when an accident occurs, Where there is image information captured before the accident as a document, the image information captured before the accident as a document is added to the image captured within the specified time period from the occurrence of the accident to after the accident The information is stored together as a file in the storage mechanism. Therefore, the image information captured for a long time from before the accident to after the accident is retained in the storage mechanism as one file, and the accident can be confirmed. Part of the cause, it is easy to determine the cause of the accident, and will not lose important image information that can determine the cause of the accident.

Moreover, since the above-mentioned file containing the image information captured at the moment when the acceleration exceeds the threshold value is prohibited from being overwritten, the file will not be lost due to overwriting when filming is restarted after the accident, and important information that can determine the cause of the accident can be reliably prevented. Loss of image information.

Furthermore, since the image information other than the time of the accident is also stored in the storage means, the user can refer to the image information other than the accident, which can be used to improve his own driving skills and enjoy the scenery around the driving road.

Furthermore, since the power of the drive recorder D is turned off after the shooting for a predetermined time after the accident occurs, and all processes such as shooting, acceleration detection, file creation, and file storage are not performed, it is possible to record a part of the cause of the accident including Files of image information are securely retained in the storage mechanism.

Furthermore, as described above, according to the drive recorder D of this embodiment, in addition to detecting accidents based on acceleration, when any abnormality occurs in the motorcycle and the power supply is cut off halfway, it will also start from the occurrence of the accident. Continuous photography and acceleration detection are performed for a predetermined period of time, and files are generated and stored in the storage mechanism. Therefore, even in the case where accident detection cannot be performed based on acceleration, the possibility of detecting a two-wheeled vehicle overturning or contact accident is increased. It is possible to accurately recognize the occurrence of an accident and store the image information at the time of the accident.

Moreover, the above-mentioned files are prohibited from being overwritten, so when power supply is restarted, photography is restarted, etc., they will not be overwritten and lost, and image information that may cause an accident can be reliably prevented from being lost.

Furthermore, after the photographing for a predetermined time after the occurrence of the accident or after the photographing for a predetermined time after the power supply is cut off, the power of the drive recorder D is turned off, and all processes such as photographing, acceleration detection, file generation, and file storage are not performed. Therefore, a file including image information having a possibility of occurrence of an accident can be reliably retained in the storage mechanism.

Furthermore, when the power supply from the driving vehicle power supply is cut off halfway, a file is generated and stored in the storage mechanism. Therefore, even if the user parks the vehicle and turns off the auxiliary power supply, if the shooting time is not met, the file will be saved at the end of the drive. The file can be generated and stored in the storage mechanism without the user's operation, which is convenient and does not miss the preservation of the captured image.

In addition, since the shooting time for generating one file can be changed according to the needs of the user, the shooting time corresponding to the travel time can be specified, and the image information required by the user can be obtained. Furthermore, since it is possible to designate the shooting time corresponding to the driving time, the user can obtain a file containing image information without any seams along the way.

The above completes the description of the embodiments of the present invention, but it is needless to say that the scope of the present invention is not limited to the details shown or described.

Industrial availability

The present invention can be used as a drive recorder for storing driving conditions of a vehicle.

Claims (5)

1. drive recorder; This drive recorder is provided with: be located at the video camera of vehicle, the acceleration transducer that can detect two the acceleration all around of vehicle at least and be used to store image that video camera is taken the photograph and the storing mechanism of the acceleration that acceleration transducer detects; It is characterized in that; When the accessory power supply of vehicle is connected, begin to photograph, the detection of acceleration; Every photography time at a distance from regulation generates the file that comprises the image information of being produced in order, and be replaced as ancient deed the file that generates in order and store in the storing mechanism, and; The threshold value that the acceleration that detects acceleration transducer surpasses regulation is as condition; Or the threshold value that the acceleration that detects acceleration transducer surpasses regulation in the set time carries out the image photography of stipulated time as condition when reaching said condition, generates to be included in above the file of the moment of threshold value and the image information of in the said stipulated time, producing and this document to store in the storing mechanism.

2. drive recorder as claimed in claim 1; It is characterized in that; And then an electric power supply from vehicle power supply is cut off in the condition of appending to; Supply with the image photography carry out the stipulated time when being cut off when electric power, generate and be included in that electric power is supplied with the cut moment and the file of the image information of in the said stipulated time, producing and store this document in the storing mechanism into.

3. according to claim 1 or claim 2 drive recorder is characterized in that said file is forbidden being capped.

4. like each the described drive recorder in the claim 1～3, it is characterized in that, the storage of file and forbid the processing that covers be over after photography, acceleration detection and file generate and are over.

5. like each the described drive recorder in the claim 1～4, it is characterized in that said photography time can change.

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