CN105943274B - clinical care bed - Google Patents

Abstract

The invention relates to a clinical care sickbed, which comprises a sickbed and a safety maintenance system, wherein the system comprises a spring device, an inflator pump, a human body detection device, an infrared ray detection device, a weight change rate detection device and a Lingyang SPCE061A chip, wherein the Lingyang SPCE061A chip is respectively connected with the spring device, the inflator pump, the human body detection device, the infrared ray detection device and the weight change rate detection device and is used for determining whether to start the human body detection device and the infrared ray detection device based on the output of the weight change rate detection device and determining whether to send a falling trigger signal to the spring device and the inflator pump to pop up and fill an air cushion at the position below the sickbed based on the output of the human body detection device and the output of the infrared ray detection device. By the invention, the patient can be prevented from being injured when falling out of the sickbed carelessly.

Description

clinical care bed

technical field

The invention relates to the field of medical equipment, in particular to a clinical nursing bed.

Background technique

For patients waiting for treatment or receiving treatment in the hospital department, the hospital bed is their main activity place. The hospital management and the patient's family members hope that the patient can lie on the hospital bed to rest or receive treatment safely, so as to ensure that the patient can stay on the hospital bed Go through the treatment period and recovery period normally, waiting for the end of treatment date.

However, if the patient accidentally falls from the hospital bed, the damage to the patient is immeasurable. This is because some patients are prone to secondary injuries caused by falling. For example, some patients suffer from muscle damage. Or the damage of muscles and bones, if they fall under the hospital bed again, it will aggravate their own condition, and it is also possible that some patients fell under the hospital bed during treatment, and when they fell, they still had medical equipment on their bodies, such as breathing masks, etc. If it falls, it is likely that the patient will be in an extremely dangerous state because the medical device will fall off.

Under normal circumstances, patients can safely rest or receive treatment on the hospital bed. On the one hand, there will be uninterrupted medical staff to carry out medical work, or there will be long-term care of the patient's family members. Even at night, special medical staff may be arranged. Nurses are paid to care for patients, which shortens the unattended time of patients. On the other hand, it is also because some patients still have a certain ability to move, and they have self-regulated themselves to reduce the probability of falling from the bed. However, medical staff, patients' family members and even paid nursing staff are artificial caregivers after all, and they still have time to eat and rest, so they cannot provide uninterrupted, 24-hour care for patients. Therefore, patients still have a certain amount of unattended time. At the same time, there are also some patients who are completely incapacitated. For these patients, it is likely that an unintentional turning over caused the fall from the bed.

In order to avoid the occurrence of patients falling from the bed, in the prior art, the hospital management has also taken many positive measures, for example, transforming the bed body of the hospital bed, increasing the height of the guardrail, and setting some border-crossing alarm devices on the bed body of the hospital bed And emergency call equipment to reduce the possibility of patients falling from the bed, and provide the trigger device for the patient to fall from the bed alarm. These modified hospital bed equipment have reduced the occurrence of patients falling from the bed to a certain extent. At the same time, the hospital management has also taken some measures, such as increasing interaction and communication with patients' families, to reduce the time patients are left unattended.

However, the existing bed transformation mechanism of these beds is too simple. Since the interval between patients falling from the bed is very short, the detection accuracy and detection efficiency of the above-mentioned detection and alarm equipment are not high, and the increase of the height of the guardrail and the increase of nursing time can only reduce The probability of the patient falling from the bed, but the event of falling from the bed cannot be avoided. The most important thing is that in the prior art, there is a lack of rapid response measures and rapid response equipment for the patient's falling from the bed, and it is impossible to respond quickly to the patient's falling from the bed. Carry out quick support to patient's health in time, cause the bad consequence that can't avoid patient's fall from bed.

Therefore, there is a need for a new technical solution for hospital bed fall prevention, which can accurately and efficiently detect the patient's fall from the bed, can quickly report to the police, and can also use some emergency response equipment to rescue the patient, thereby effectively preventing the patient from falling. Injured by impact, the intelligent level of the hospital bed is improved, and the medical care effect of the hospital is maintained.

Contents of the invention

In order to solve the above-mentioned problems, the present invention provides a clinical nursing bed. By transforming the existing hospital bed body, weight detection equipment, image detection equipment and radiation detection equipment are introduced into the existing hospital bed body. Accurately judge bed incidents, introduce some early warning equipment for corresponding alarm, more importantly, also introduce targeted emergency rescue equipment to effectively support the body of the falling patient, thus improving the safety performance of the hospital bed.

According to one aspect of the present invention, a clinical nursing bed is provided, including a bed and a safety maintenance system, and the system includes a spring device, an air pump, a human body detection device, an infrared detection device, a weight change rate detection device and Sunplus SPCE061A chip , Lingyang SPCE061A chip is respectively connected with the spring device, air pump, human body detection device, infrared detection device, weight change rate detection device, and is used to determine whether to start the human body detection device and infrared detection device based on the output of the weight change rate detection device. Based on the output of the human body detection device and the output of the infrared detection device, it is used to determine whether to send a fall trigger signal to the spring device and the air pump to eject and fill the air cushion at the position under the hospital bed.

More specifically, in the clinical nursing bed, it includes: weight change rate detection equipment, located at the lower side of the bed board of the hospital bed, including a weight detector and a timer, the weight detector is used to detect the load weight on the bed board of the hospital bed in real time, and the weight The rate of change detection device determines the rate of change of the load weight on the bed plate based on the output of the weight detector and the output of the timer. When the rate of change of the load weight is greater than the preset rate of change, a weight change warning signal is issued. When the rate of change of the load weight is less than or equal to When the rate of change is preset, a signal of normal weight change is sent; the CCD sensor device is located on one side of the bed board, facing away from the side of the bed and shooting in a horizontal shooting direction to obtain high-definition side images;

Airspace image enhancement equipment, connected with CCD sensing equipment to receive high-definition side images, including direct grayscale transformation sub-equipment and histogram correction sub-equipment, direct grayscale transformation sub-equipment is connected with CCD sensing equipment, used for high-definition side image Performing direct grayscale transformation processing to obtain the first enhanced image, the histogram correction sub-device is connected to the direct grayscale transformation sub-equipment for receiving the first enhanced image, and performing histogram correction processing on the first enhanced image to obtain the second enhanced image Enhanced image, wherein the direct grayscale transformation process uses a logarithmic function to operate on each pixel value of the high-definition side image, and forms each pixel value after the operation into the first enhanced image, and the histogram correction process changes the shape of the histogram To change the grayscale layout of the first enhanced image to enhance the first enhanced image, to obtain a second enhanced image; the Wiener filtering device is connected to the histogram correction sub-device of the spatial image enhancement device for receiving the second enhanced image, and performing a first filtering process on the second enhanced image to obtain a first filtered image, wherein the first filtering process is used to minimize the mean square error between the first filtered image and the second enhanced image to remove speckle noise and White noise; improved median filtering equipment, connected with Wiener filtering equipment to obtain the first filtered image, including noise detection sub-equipment, module selection sub-equipment and filter processing sub-equipment, noise detection sub-equipment is connected with Wiener filtering equipment, Determine the distribution radius of each noise distribution area by analyzing the gray value of the pixel points of the first filtered image, and output the maximum value of the distribution radii of each noise distribution area as the maximum distribution radius, the module selection sub-equipment and The noise detection sub-device is connected to receive the maximum distribution radius and select the filter module for median filtering based on the maximum distribution radius, and the filter processing sub-device is connected to the Wiener filter device and the module selection sub-device respectively for selection-based filtering The module performs a median filtering process on the first filtered image to obtain a second filtered image, wherein the median filtering process includes performing the following processing on each pixel in the first filtered image as a target pixel: using the target pixel in the first filter The position in the image is taken as the centroid of the selected filter module, and a plurality of pixel points are taken out in the first filtered image as a plurality of reference pixel points, and the maximum and minimum values of the pixel values of the plurality of reference pixel points are taken as the pixel maximum Value and pixel minimum value, determine the average value of the pixel maximum value and pixel minimum value as the pixel average value, for each reference pixel point, if its pixel value is less than the pixel average value, then replace its pixel value with 0, if its pixel value If the value is greater than or equal to the pixel average value, its pixel value is retained, and finally the average value of the pixel values of multiple reference pixel points is output as the pixel value of the target pixel point; the human body detection device is connected with the improved median filtering device, and the first In the second filter image, all the pixels whose gray value of the pixel point is within the range of the gray value of the human body form the sub-image of the human body. When the total number of pixels occupied by the sub-image of the human body is greater than or equal to the preset number of pixels, a human body signal is sent. Otherwise, send out no human body signal; infrared detection equipment, located in One side of the bed board of the hospital bed is used to detect whether there is an object passing by the side of the bed board of the hospital bed, and when an object is detected to pass by the side of the bed board of the hospital bed, an object passing signal is sent; the spring device is connected with Sunplus SPCE061A chip And it is arranged on the air cushion, which is used to eject the air cushion horizontally from the position below the hospital bed to one side of the hospital bed when the fall trigger signal is received, and send a spring operation completion signal after the air cushion is ejected horizontally; the air pump is respectively connected with the spring device, Sunplus SPCE061A chip is connected to the air cushion, which is used to inflate the air cushion according to the preset inflation capacity when receiving the fall trigger signal and the spring operation completion signal; the air cushion remains at the position before the spring device receives the fall trigger signal. The bed is under the contracted state, which is used to protect the human body from the falling of the bed after the inflation is completed; the solar detection equipment is located on the outer wall of the building where the ward is located, and is used to detect the current solar intensity in real time; the power supply equipment includes solar power supply devices, The storage battery, the switch and the voltage converter, the switch is connected with the solar detection equipment, the solar power supply device and the storage battery respectively, when the remaining power of the storage battery is insufficient and the current solar intensity is higher than or equal to the preset intensity, switch to the solar power supply device to The solar power supply device is powered, and the voltage converter is connected with the switch to convert the 5V input through the switch to 3.3V voltage, wherein the solar power supply device is located on the outer wall of the building where the ward is located, and the solar power supply device includes solar photovoltaic panels; wireless The charging equipment is connected with the solar detection equipment and the storage battery respectively. When the remaining power of the storage battery is insufficient and the current solar energy intensity is lower than the preset intensity, a connection is established with a nearby wireless charging terminal to start the wireless charging operation. The wireless charging equipment is also connected with the voltage The converter is connected to realize the voltage conversion; the sound and light alarm device is connected with the Sunplus SPCE061A chip, including the sound alarm sub-device and the light alarm sub-device, which are used to perform corresponding sound and light alarm operations when a fall trigger signal or a fall warning signal is received; The user input device is connected with the MS memory card, and is used to input the preset content into the MS memory card under the operation of the user; Sunplus SPCE061A chip is respectively connected with the CCD sensor device, the spring device, the weight change rate detection device, and the human body The detection equipment is connected to the infrared detection equipment. After receiving the warning signal of weight change, the CCD sensing equipment, the human detection equipment and the infrared detection equipment are activated, and then when the human body signal is received and the object passing signal is received, the fall trigger signal is sent. , when no human body signal is received and an object passing signal is received, a fall warning signal is sent, and when no object passing signal is received but only a human body signal is received, a fall warning signal is sent; MS memory card is used for pre-stored The number of preset pixels and the preset rate of change are specified; the mains power access interface is connected to the mains line to receive the AC power supply signal input by the mains line; the current transformer and sampling circuit are connected to the A in the mains line Phase line, B phase line and C phase line connection, used for A phase line, B phase line and The current signal in the C-phase line is sampled separately; the voltage sampling circuit is connected with the A-phase line, B-phase line and C-phase line in the mains line, and is used for the A-phase line, B-phase line and C-phase line. The voltage signal is sampled separately; the current signal conditioning circuit is connected with the current transformer and the sampling circuit for signal conditioning of the sampling current; the voltage signal conditioning circuit is connected with the voltage sampling circuit for signal conditioning of the sampling voltage; AD73360 The chip is connected to the current signal conditioning circuit and the voltage signal conditioning circuit respectively, and performs 16-bit A/D conversion on the conditioned sampling current and the conditioned sampling voltage to obtain a digital current signal and a digital voltage signal, and also based on the digital current signal and the digital voltage signal to determine the effective value of the digital current signal and the effective value of the digital voltage signal; the AC power supply conversion equipment is connected with the A-phase line, B-phase line and C-phase line in the mains line, and is used to perform the conversion from AC to DC Conversion; the display device is connected with the AD73360 chip, and is used to display the effective value of the digital current signal and the effective value of the digital voltage signal in real time; wherein, the module selection sub-equipment selects the filter module for median filtering based on the maximum distribution radius, including: maximum distribution The larger the radius, the larger the filter module selected for median filtering, the smaller the maximum distribution radius, and the smaller the filter module selected for median filtering; wherein, the filter modules for selection in the module selection sub-equipment include 3×3 , 5×5, 7×7 and 9×9.

More specifically, in the clinical nursing bed: the user input device is a keyboard array.

More specifically, in the clinical nursing bed: the infrared detection device includes an infrared transmitter and an infrared receiver.

More specifically, in the clinical nursing bed: the infrared detection device includes a microcontroller.

More specifically, in the clinical nursing bed: the microcontroller is a 51 series single-chip microcomputer, and is connected with the infrared transmitter and the infrared receiver respectively.

Description of drawings

Embodiments of the present invention will be described below in conjunction with the accompanying drawings, wherein:

Fig. 1 is a structural block diagram of a clinical nursing bed according to an embodiment of the present invention.

Reference signs: 1 spring equipment; 2 air pump; 3 human body detection equipment; 4 infrared detection equipment; 5 weight change rate detection equipment; 6 Lingyang SPCE061A chip

Detailed ways

Embodiments of the clinical nursing bed of the present invention will be described in detail below with reference to the accompanying drawings.

Medical equipment can be divided into 10 categories: ward nursing equipment (beds, carts, oxygen cylinders, gastric lavage machines, needle-free syringes, etc.); surgical equipment (operating beds, lighting equipment, surgical instruments and various tables, racks, stools, cabinets, including microsurgery equipment); radiotherapy equipment (contact therapy machines, superficial therapy machines, deep therapy machines, accelerators, 60 cobalt therapy machines, radium or 137 cesium intracavitary therapy and post-installation device therapy, etc.); Medical treatment equipment-there are three types of treatment methods: internal radiation therapy, sticking therapy and colloid therapy; physical and chemical equipment (generally can be divided into four categories: phototherapy business, electrotherapy equipment, ultrasonic treatment and sulfur therapy equipment); laser equipment-medical laser generator Devices (commonly used are ruby laser, helium-neon laser, carbon dioxide laser, argon ion laser and YAG laser, etc.); dialysis treatment equipment (commonly used artificial kidneys include flat artificial kidney and tubular artificial kidney); body temperature freezing equipment (semiconductor cold knife, gas cold knife and solid cold knife, etc.); first aid equipment (cardiac defibrillation pacing equipment, artificial respirator, ultrasonic nebulizer, etc.); other treatment equipment (hyperbaric oxygen chamber, ophthalmic high-frequency electric chromium devices, electromagnetic magnets, vitreous cutters, adult blood separators, etc.). These all belong to the special treatment equipment for each department, and can be divided into a separate category if necessary.

The bed is the most basic and common medical equipment in the hospital. Most of the patients' medical time and nursing time are spent on the bed. It happened and caused great harm to the patient. In addition to bringing some trauma on the impact, it is also likely to expand the patient's condition and adversely affect the recovery and treatment of the patient.

At present, the hospital management has also actively taken some measures to prevent and avoid patients falling from the bed, such as strengthening the bed body, adding early warning equipment, and reducing unmanned nursing time. However, on the one hand, these measures and equipment are too simple, and detection and early warning The efficiency is not high. On the other hand, there is a lack of emergency rescue equipment to support the patient's body when the patient falls from the bed. Even if the patient's fall from the bed is detected, the consequences of the patient's fall from the bed cannot be avoided. In fact, no help is provided for the patient.

In order to overcome the above deficiencies, the present invention builds a clinical nursing bed, uses the existing hospital bed body, carries out structural transformation and upgrading, adds various detection equipment and early warning equipment to accurately identify the event of the patient falling from the bed, What is particularly critical is that effective emergency response equipment is also added to provide emergency rescue when the patient falls from the bed, thereby avoiding the injury caused to the patient by the event of falling from the bed.

Fig. 1 is a structural block diagram of a clinical nursing bed shown according to an embodiment of the present invention, including a bed and a safety maintenance system, and the system includes a spring device, an air pump, a human body detection device, an infrared detection device, a weight change rate detection device and a suspension Yang SPCE061A chip, Lingyang SPCE061A chip is respectively connected with spring equipment, air pump, human body detection equipment, infrared detection equipment, weight change rate detection equipment, and is used to determine whether to start human body detection equipment and infrared detection based on the output of weight change rate detection equipment The device is also used to determine whether to send a fall trigger signal to the spring device and the air pump based on the output of the human body detection device and the output of the infrared detection device to eject and fill the air cushion at the position under the hospital bed.

Next, the specific structure of the clinical nursing bed of the present invention will be further described.

The system includes: weight change rate detection equipment, located at the lower side of the bed board of the hospital bed, including a weight detector and a timer. The weight detector is used to detect the load weight on the bed board of the hospital bed in real time, and the weight change rate detection device is based on The output of the output and the timer determines the rate of change of the load weight on the bed of the hospital bed. When the rate of change of the load weight is greater than the preset rate of change, a weight change warning signal is issued. When the rate of change of the load weight is less than or equal to the preset rate of change, a weight change is issued. normal signal.

The system includes: a CCD sensing device, located on one side of the bed board of the hospital bed, facing away from the side of the hospital bed and shooting in a horizontal shooting direction to obtain high-definition side images; airspace image enhancement equipment, connected with the CCD sensing device to receive high-definition side images, including The direct grayscale transformation sub-device and the histogram correction sub-equipment, the direct grayscale transformation sub-equipment is connected with the CCD sensing device, and is used to perform direct grayscale transformation processing on the high-definition side image to obtain the first enhanced image, and the histogram correction sub-equipment Connected with the direct grayscale transformation sub-device, used to receive the first enhanced image, and perform histogram correction processing on the first enhanced image to obtain the second enhanced image, wherein the direct grayscale transformation process adopts a logarithmic function to the high-definition side image Each pixel value is calculated, and each pixel value after the calculation is composed of the first enhanced image. The histogram correction process changes the grayscale layout of the first enhanced image by changing the shape of the histogram to enhance the first enhanced image, and obtains Second enhanced image.

The system includes: a Wiener filter device, connected to the histogram correction sub-device of the spatial image enhancement device, for receiving the second enhanced image, and performing the first filtering process on the second enhanced image to obtain the first filtered image, wherein The first filtering process is used to minimize the mean square error between the first filtered image and the second enhanced image to remove speckle noise and white noise in the second enhanced image.

The system includes: an improved median filtering device, connected with a Wiener filtering device to obtain a first filtered image, including a noise detection sub-device, a module selection sub-device and a filter processing sub-device, the noise detection sub-device and the Wiener filtering device Connection, by analyzing the gray value of the pixels of the first filtered image to determine the distribution radius of each noise distribution area, and output the maximum value of the distribution radii of each noise distribution area as the maximum distribution radius, the module selector The device is connected with the noise detection sub-device for receiving the maximum distribution radius and selecting a filter module for median filtering based on the maximum distribution radius, and the filter processing sub-device is respectively connected with the Wiener filter device and the module selection sub-device for selecting The filtering module performs a median filtering process on the first filtered image to obtain a second filtered image, wherein the median filtering process includes performing the following processing on each pixel in the first filtered image as a target pixel: taking the target pixel at the second The position in a filtered image is taken as the centroid of the selected filtering module in the first filtered image to take out a plurality of pixel points as a plurality of reference pixel points, and take the maximum and minimum values of the pixel values of the plurality of reference pixel points as Pixel maximum value and pixel minimum value, determine the average value of the pixel maximum value and pixel minimum value as the pixel average value, for each reference pixel point, if its pixel value is less than the pixel average value, then replace its pixel value with 0, if If its pixel value is greater than or equal to the pixel average value, its pixel value is retained, and finally the average value of the pixel values of multiple reference pixel points is output as the pixel value of the target pixel point.

The system includes: a human body detection device connected to an improved median filter device, and all pixels in the second filtered image whose gray value is within the gray value range of the human body form a human body sub-image, when the human body sub-image When the total number of occupied pixels is greater than or equal to the preset number of pixels, a human body presence signal is sent; otherwise, a human body absence signal is sent.

The system includes: an infrared detection device, located on one side of the bed board of the hospital bed, used to detect whether an object passes by the side of the bed board of the hospital bed, and when an object is detected to pass by the side of the bed board of the hospital bed, an object passing signal is sent .

The system includes: a spring device, connected with Sunplus SPCE061A chip and set on the air cushion, used to eject the air cushion horizontally from the position below the hospital bed to one side of the hospital bed when the trigger signal of falling is received, and after the air cushion is ejected horizontally The spring operation completion signal is sent out; the air pump is connected to the spring device, Lingyang SPCE061A chip and the air cushion respectively, and is used to inflate the air cushion according to the preset inflation capacity when receiving the fall trigger signal and the spring operation completion signal; the air cushion , before the spring device receives the fall trigger signal, it remains under the hospital bed and is in a contracted state, which is used to protect the human body from falling from the hospital bed after the inflation is completed.

The system includes: solar energy detection equipment, located on the outer wall of the building where the ward is located, for real-time detection of current solar energy intensity; power supply equipment, including solar power supply devices, batteries, switching switches and voltage converters, the switching switches are respectively connected with solar energy detection The equipment, the solar power supply device and the storage battery are connected. When the remaining power of the battery is insufficient and the current solar intensity is higher than or equal to the preset intensity, switch to the solar power supply device to be powered by the solar power supply device, and the voltage converter is connected with the switch to convert the The 5V voltage input through the switch is converted into 3.3V voltage, wherein the solar power supply device is located on the outer wall of the building where the ward is located, and the solar power supply device includes a solar photovoltaic panel.

The system includes: a wireless charging device, which is respectively connected to the solar energy detection device and the storage battery. When the remaining power of the storage battery is insufficient and the current solar energy intensity is lower than the preset intensity, a connection is established with a nearby wireless charging terminal to start the wireless charging operation. The wireless charging device is also connected with a voltage converter for voltage conversion.

The system includes: an audible and visual alarm device connected to Sunplus SPCE061A chip, including an audible alarm sub-device and a light alarm sub-device for performing corresponding audible and visual alarm operations when a fall trigger signal or a fall warning signal is received.

The system includes: a user input device, connected with the MS memory card, used for inputting preset content into the MS memory card under the user's operation.

The system includes: Sunplus SPCE061A chip, which is respectively connected with CCD sensing equipment, spring equipment, weight change rate detection equipment, human body detection equipment and infrared detection equipment. The detection equipment and the infrared detection equipment, when receiving a human body signal and an object passing signal, send a fall trigger signal, and when receiving no human body signal and receiving an object passing signal, send a fall warning signal, and not Receives the passing signal of the object but only receives the human body signal, and sends out the fall warning signal; the MS memory card is used to pre-store the preset number of pixels and the preset change rate.

The system includes: a mains power access interface connected to the mains line for receiving the AC power supply signal input by the mains line; a current transformer and a sampling circuit connected to the A-phase line, B-phase line and The C-phase line connection is used to sample the current signals in the A-phase line, B-phase line and C-phase line respectively; the voltage sampling circuit is connected to the A-phase line, B-phase line and C-phase line in the mains line, It is used to sample the voltage signals in the A-phase line, B-phase line and C-phase line respectively; the current signal conditioning circuit is connected with the current transformer and the sampling circuit, and is used for signal conditioning of the sampling current; the voltage signal conditioning circuit, It is connected with the voltage sampling circuit, and is used for signal conditioning on the sampling voltage.

The system includes: AD73360 chip, which is respectively connected to the current signal conditioning circuit and the voltage signal conditioning circuit, respectively performs 16-bit A/D conversion on the conditioned sampling current and the conditioned sampling voltage, and obtains digital current signals and digital voltage signals , further determining an effective value of the digital current signal and an effective value of the digital voltage signal based on the digital current signal and the digital voltage signal.

The system includes: AC power supply conversion equipment, connected to the A-phase line, B-phase line and C-phase line in the mains line, for performing conversion from AC to DC; display equipment, connected to the AD73360 chip, for real-time display The effective value of the digital current signal and the effective value of the digital voltage signal;

Among them, the module selection sub-device selects the filter module for median filtering based on the maximum distribution radius, including: the larger the maximum distribution radius, the larger the filter module selected for median filtering, the smaller the maximum distribution radius, and the selected median filter The smaller the filtering module is; wherein, the optional filtering modules in the module selection sub-equipment include 3×3, 5×5, 7×7 and 9×9.

Optionally, in the platform: the user input device is a keyboard array; the infrared detection device includes an infrared transmitter and an infrared receiver; the infrared detection device includes a microcontroller; Transmitter and infrared receiver are connected.

In addition, a filter, as the name suggests, is a device that filters waves. "Wave" is a very broad physical concept. In the field of electronic technology, "wave" is narrowly limited to the process of describing the fluctuation of the value of various physical quantities with time. This process is converted into a time function of voltage or current through the action of various sensors, which is called the time waveform of various physical quantities, or called a signal. Because the independent variable time is continuously valued, it is called a continuous time signal, and it is also customarily called an analog signal.

With the emergence and rapid development of digital electronic computer technology, in order to facilitate the processing of signals by computers, a complete theory and method for transforming continuous time signals into discrete time signals under the guidance of the sampling theorem has been produced. That is to say, the original signal can be expressed by using only the sample values of the original analog signal at a series of discrete time coordinate points without losing any information. Since the concepts of wave, waveform, and signal express the changes of various physical quantities in the objective world, Nature is the carrier of all kinds of information on which modern society depends. Information needs to be disseminated, relying on the transmission of waveform signals. The signal may be distorted due to the existence of environment and interference in every link of its generation, conversion and transmission, and even in quite a few cases, the distortion is still serious, resulting in the signal and the information it carries being deeply distorted. Buried deep in the noise. In order to filter out these noises and restore the original signal, it is necessary to use various filters for filtering.

Using the clinical nursing bed of the present invention, aiming at the technical problem that the prior art cannot provide emergency rescue for patients who fall from the bed, multiple high-precision detection devices are added to conduct comprehensive analysis of the detection results to effectively determine whether the patient has fallen. Necessary alarm equipment is also added to alarm, and special emergency response equipment is also added to provide emergency rescue when the patient falls, thus reflecting the hospital's humanistic rescue spirit.

It can be understood that although the present invention has been disclosed above with preferred embodiments, the above embodiments are not intended to limit the present invention. For any person skilled in the art, without departing from the scope of the technical solution of the present invention, the technical content disclosed above can be used to make many possible changes and modifications to the technical solution of the present invention, or be modified into equivalent changes, etc. effective example. Therefore, any simple modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the present invention, which do not deviate from the technical solution of the present invention, still fall within the protection scope of the technical solution of the present invention.

Claims (1)

1. a kind of clinical care sick bed, including sick bed and security maintenance system, the system includes spring equipment, inflator pump, people Physical examination measurement equipment, infrared detection equipment, weight rate detection device and Ling Yang SPCE061A chips, Ling Yang SPCE061A cores Piece is connected with spring equipment, inflator pump, human body detecting device, infrared detection equipment, weight rate detection device respectively, is used Determine whether to start human body detecting device and infrared detection equipment in the output based on weight rate detection device, be additionally operable to The output of output and infrared detection equipment based on human body detecting device determines whether that spring equipment and inflator pump send pendant Fall trigger signal to eject and be full of the air cushion positioned at sick bed lower position；

Characterized in that, the system also includes：

Weight rate detection device, positioned at sick bed bed board downside position, including weight detector and timer, weight detecting Instrument is used to detect the load weight on sick bed bed board, output and meter of the weight rate detection device based on weight detector in real time When device output determine load weight rate of change on sick bed bed board, when load weight rate of change is more than default rate of change, hair Go out weight change pre-warning signal, when load weight rate of change is less than or equal to default rate of change, send weight change normal signal；

CCD sensing equipments, positioned at the side of sick bed bed board, shot backwards to ward bed side with horizontal shooting direction to obtain high definition side Face image；

Spatial domain picture strengthens equipment, is connected with CCD sensing equipments to receive high definition side image, including direct greyscale transformation is set The standby and sub- equipment of histogram modification, the direct sub- equipment of greyscale transformation is connected with CCD sensing equipments, for being held to high definition side image To obtain the first enhancing image, the sub- equipment of histogram modification connects the direct greyscale transform process of row with the sub- equipment of direct greyscale transformation Connect, histogram modification processing performed to obtain the second enhancing image for receiving the first enhancing image, and to the first enhancing image, Wherein, direct greyscale transform process carries out computing using logarithmic function to each pixel value of high definition side image, by computing Each pixel value composition the first enhancing image afterwards, histogram modification processing change first by changing the shape of histogram The gray scale of enhancing image is laid out to strengthen the first enhancing image, obtains the second enhancing image；

Wiener filtering equipment, it is connected with the sub- equipment of histogram modification of spatial domain picture enhancing equipment, for receiving the second enhancing figure Picture, and the first filtering process is performed to obtain the first filtering image to the second enhancing image, wherein the first filtering process is used to make The first filtering image and the second enhancing image mean square error minimum to remove speckle noise in the second enhancing image and in vain Noise；

Modified medium filtering equipment, it is connected with Wiener filtering equipment to obtain the first filtering image, including noise measuring is set Standby, module selects sub- equipment and the sub- equipment of filtering process, and the sub- equipment of noise measuring is connected with Wiener filtering equipment, by first The gray value of the pixel of filtering image is analyzed to determine the distribution radius in each noise profile region, and made an uproar each Maximum in the distribution radius of sound distributed areas selects sub- equipment and noise measuring as maximum distribution radius output, module Equipment is connected, and radius is maximally distributed for receiving, and the filtration module of medium filtering, filter are carried out based on maximum distribution radius selection The sub- equipment of ripple processing selects sub- equipment to be connected with Wiener filtering equipment and module respectively, for based on the filtration module of selection to the One filtering image carries out median filter process to obtain the second filtering image, and wherein median filter process is included for the first filtering Each pixel carries out following handle as target pixel points in image：With position of the target pixel points in the first filtering image The centre of form for putting filtration module alternatively takes out multiple pixels as multiple reference image vegetarian refreshments in the first filtering image, takes Maximum and minimum value in the pixel value of multiple reference image vegetarian refreshments is as pixel maximum and pixel minimum, to determine pixel The average value of maximum and pixel minimum is using as pixel average, for each reference image vegetarian refreshments, if its pixel value Less than pixel average, then its pixel value is replaced with 0, if its pixel value is more than or equal to pixel average, retain its pixel Value, finally exported the average value of the pixel value of multiple reference image vegetarian refreshments as the pixel value of target pixel points；

Human body detecting device, it is connected with modified medium filtering equipment, by pixel gray value in the second filtering image in human body In intensity value ranges all pixels point composition human body subgraph, when the pixel occupied by human body subgraph sum be more than etc. When presetted pixel point quantity, send and human body signal be present, otherwise, send no human body signal；

Infrared detection equipment, positioned at the side of sick bed bed board, for detecting whether there is object to pass through from the side of sick bed bed board, And when detecting that object passes through from the side of sick bed bed board, send object and skim over signal；

Spring equipment, be connected and be arranged on air cushion with Ling Yang SPCE061A chips, for receive fall trigger signal when, Air cushion is ejected into the side of sick bed from sick bed lower position level, and sends spring operation after the horizontal ejection of air cushion and completes letter Number；

Inflator pump, it is connected respectively with spring equipment, Ling Yang SPCE061A chips and air cushion, for receiving trigger signal of falling And when receiving spring operation completion signal, air cushion is inflated according to preset inflation capacity；

Air cushion, before spring equipment does not receive trigger signal of falling, remain in below sick bed and be in contraction state, use Protected in the human body that fallen after inflation to sick bed；

Solar energy detection device, on the exterior wall of building where ward, for detecting current solar energy intensity in real time；

Power supply unit, including solar powered device, battery, switching switch and electric pressure converter, switching switch respectively with too Positive energy detection device, solar powered device connect with battery, when the solar energy that the dump energy of battery is insufficient and current When intensity is optionally greater than preset strength, solar powered device is switched to be powered by solar powered device, electric pressure converter Connected with switching switch, using the 5V voltage conversions by input is switched by switching as 3.3V voltages, wherein solar powered device On the exterior wall of building where ward, solar powered device includes solar energy photovoltaic panel；

Wireless charging device, it is connected respectively with solar energy detection device and battery, when the dump energy of battery is insufficient and works as When preceding solar energy intensity is less than preset strength, establishes and connected to start wireless charging operation with neighbouring wireless charging terminal, Wireless charging device is also connected with electric pressure converter to realize voltage conversion；

Sound and light alarm equipment, it is connected with Ling Yang SPCE061A chips, including the sub- equipment of audible alarm and the sub- equipment of light alarm are used for Receive fall trigger signal or fall pre-warning signal when carry out corresponding sound and light alarm operation；

User input equipment, it is connected with MS storage cards, under the operation of user, preset content to be inputted into MS storage cards；

Ling Yang SPCE061A chips, set respectively with CCD sensing equipments, spring equipment, weight rate detection device, human testing It is standby to be connected with infrared detection equipment, after weight change pre-warning signal is received, start CCD sensing equipments, human body detecting device With infrared detection equipment, then human body signal be present and when receiving object and skimming over signal receiving, send triggering of falling Signal, when receiving no human body signal and receiving object and skim over signal, the pre-warning signal that falls is sent, and do not receive thing Part skims over signal and receives only and human body signal be present, sends the pre-warning signal that falls；

MS storage cards, for having prestored presetted pixel point quantity and default rate of change；

Civil power access interface, is connected with line, for receiving the Alternating Current Power Supply signal of line input；

Current transformer and sample circuit, it is connected with the A phase lines in line, B phase lines and C phase lines, for A phases Current signal in circuit, B phase lines and C phase lines is sampled respectively；

Voltage sample circuit, it is connected with the A phase lines in line, B phase lines and C phase lines, for A phase lines, B phases Voltage signal in circuit and C phase lines is sampled respectively；

Current signal conditioning circuit, it is connected with current transformer and sample circuit, for carrying out signal condition to sampling current；

Voltage signal conditioning circuit, it is connected with voltage sample circuit, for carrying out signal condition to sampling voltage；

AD73360 chips, are connected with current signal conditioning circuit and voltage signal conditioning circuit respectively, to the sampling electricity after conditioning Sampling voltage after stream and conditioning performs 16 A/D conversions respectively, obtains digital current signal and digital voltage signal, is also based on Digital current signal and digital voltage signal determine the virtual value of digital current signal and the virtual value of digital voltage signal；

Alternating Current Power Supply conversion equipment, it is connected with the A phase lines in line, B phase lines and C phase lines, for performing exchange Electricity arrives the conversion of direct current；

Display device, it is connected with AD73360 chips, virtual value and digital voltage signal for real-time display digital current signal Virtual value；

Wherein, module, which selects sub- equipment to carry out the filtration module of medium filtering based on maximum distribution radius selection, includes：Maximum point Cloth radius is bigger, and the filtration module of the progress medium filtering of selection is bigger, and maximum distribution radius is smaller, the carry out intermediate value filter of selection The filtration module of ripple is smaller；

Wherein, module selects filtration module selective in sub- equipment to include 3 × 3,5 × 5,7 × 7 and 9 × 9.