CN112118051A - Power tool communication system and communication method - Google Patents

Abstract

A power tool communication system includes a power tool and a controller, the power tool includes a power source and a controller, a motor and a lighting emitting device powered by the power source; the controller is electrically connected to the lighting emitting device and Control the on/off of the lighting emitting device, the light waves emitted by the lighting emitting device include infrared light; the controller includes a control unit and an encoding unit; the encoding unit converts the tool information of the electric tool according to the controller A preset transmission protocol generates a tool information coded signal; the lighting emitting device sends a light wave containing the tool information coded signal, and the receiver receives the infrared light emitted by the lighting emitting device, and the present invention also provides an application A power tool communication method for the power tool communication system. With this arrangement, the power tool communication system can transmit more and more accurate tool information on the basis of reducing the manufacturing cost.

Description

Power tool communication system and communication method

technical field

The invention relates to an electric tool information transmission system, in particular to a system for information transmission between an electric tool and a receiving device, and also to a method for information transmission between an electric tool and a receiving device.

Background technique

In order to analyze and repair defective products in power tools, or for the purpose of counting user habits, it is usually hoped that the actual working data of the tool can be accurately obtained. The existing solution to technical problems is to use a split battery pack for power supply The DC tool communicates with the interface terminal of the tool and the battery pack and the special equipment, and transmits the tool information, but this solution is only suitable for electric tools that use a split battery pack; another solution to technical problems is, in the tool The built-in Bluetooth, WIFI, Internet of Things and other modules communicate with external devices, and tool information can be viewed in real time through external devices. However, additional transmitter modules need to increase manufacturing costs; there is another way to transmit tool information. Different fault causes are displayed by the flashing frequency or number of flashes of the lighting lamp of the tool, but this method affects the normal use of the lighting lamp and transmits limited tool information.

In view of this, it is indeed necessary to provide a power tool communication system and communication method to overcome the defects of the prior art.

SUMMARY OF THE INVENTION

In view of the deficiencies of the prior art, the purpose of the present invention is to provide an electric tool communication system and communication method, which can transmit more and more accurate tool information on the basis of reducing the manufacturing cost.

The technical solution adopted by the present invention to solve the problems of the prior art is as follows: the power tool communication system includes a power tool, and the power tool includes a power source, a controller, a motor and a lighting emitting device powered by the power source; the power tool communicates with The system includes a receiver, the receiver receives the tool information of the electric tool; the controller is electrically connected to the lighting emitting device and controls the lighting and extinguishing of the lighting emitting device, and the light waves emitted by the lighting emitting device include Infrared light; the controller includes a control unit and an encoding unit; the encoding unit generates a tool information encoding signal from the tool information according to a transmission protocol preset by the controller, and outputs it to the lighting emitting device; The illumination emitting device transmits light waves containing the encoded signal of the tool information, and the receiver receives the infrared light emitted by the illumination emitting device to determine the tool information state of the electric tool.

Preferably, the receiver includes an electrically connected receiving module, an amplifier circuit, a decoding unit and a receiver storage module, the receiving module includes an infrared receiving module; the receiving module receives an infrared signal containing the tool information encoded signal light, and output it to the amplification circuit for signal amplification, the decoding unit receives the amplified tool information encoded signal and decodes it, and the receiver storage module performs the decoding on the tool information obtained after the decoding. storage.

Preferably, the controller is electrically connected with a modulation circuit, the modulation circuit modulates the tool information coded signal and outputs it to the lighting emitting device; the controller includes a corresponding demodulation circuit, the demodulation circuit The modulation circuit demodulates the modulated tool information coded signal and outputs it to the decoding unit.

Preferably, the illumination emitting device and the receiving module shield external light waves to transmit the tool information encoded signal.

Preferably, the controller includes a storage unit, and the storage unit stores the tool information and the transmission protocol; the transmission protocol includes a standard infrared transmission protocol or a custom transmission protocol.

Preferably, the motor includes a stator and a rotor; the motor is provided with a rotor position detection unit for detecting the position of the rotor, the rotor position detection unit is electrically connected to the controller, and outputs the rotor position to the The controller, which calculates the rotational speed of the motor according to the rotor position; the power supply is provided with a temperature sensor for detecting the temperature of the power supply and a voltage detection circuit for detecting the voltage of the power supply, the temperature sensor and The voltage detection circuit is electrically connected to the controller, and outputs the temperature and the voltage to the controller; the motor is provided with a current detection circuit for detecting the motor current, and the current detection circuit is electrically connected to the controller, and output the current to the controller; the rotor is connected with an output shaft, the output shaft is provided with a torque sensor for detecting the torque of the output shaft, and the torque sensor is electrically connected the controller, and output the torque to the controller.

Preferably, the tool information includes at least operation information and/or usage information; the operation information includes at least one of the rotational speed, the temperature, the voltage, the current and the torque; the usage information At least one of the user, usage environment, usage frequency, usage duration, and usage location should be included.

Preferably, the power tool is provided with a control switch, and the control switch controls the lighting emitting module to switch between the lighting mode, the tool information sending mode and the off mode.

Preferably, the receiver includes a display module, and the display module displays the received tool information.

Preferably, the receiver includes an output terminal connected to an external device, and the tool information is transmitted to the external device through the output terminal.

In order to solve the problems existing in the prior art, the present invention also provides a communication method for an electric tool, and the communication method for an electric tool includes the following steps:

The tool information of the power tool is generated according to a preset transmission protocol to generate a tool information encoded signal; the tool information encoded signal is transmitted to the outside world in the form of light waves, and the light wave includes infrared light; the receiver receives the tool information encoded signal the infrared light to determine the tool information status of the power tool.

Preferably, the power tool communication method further includes the steps of: modulating the tool information coded signal and then transmitting it to an external receiver in the form of light waves; amplifying and decomposing the modulated tool information coded signal. Decode and store after adjustment.

Preferably, the power tool communication method further includes the steps of: shielding the light wave containing the tool information encoded signal from interference of external light waves and transmitting it to an outside receiver; amplifying the received tool information encoded signal and decoding it and storage.

Compared with the prior art, the present invention has the following beneficial effects: the power tool uses its own lighting emitting device to emit light waves embedded with tool information coding signals, the infrared light contained in the light waves, and the receiver receives the infrared light emitted by the lighting emitting device. light, determine the tool information status of the power tool, and accurately transmit a large amount of tool information to the receiver without adding an additional transmitter, which saves manufacturing costs; the frequency of the light wave flickering embedded with the tool information coding signal is also very high. , which cannot be detected by the human eye, so it does not affect the lighting function of the lighting emitting device.

Description of drawings

Below in conjunction with the accompanying drawings, the specific embodiments of the present invention are described in further detail:

Fig. 1 is the circuit block diagram of the first embodiment of the present invention;

FIG. 2 is a circuit block diagram of the second embodiment of the present invention.

The meaning of the reference numbers in the figure:

100. Power tool 1, controller 11, control unit 12, storage unit 13, encoding unit 14, modulation circuit 3, motor 31, rotor position detection unit 32, drive module 33, current detection circuit 4, power supply 41, voltage detection circuit 42. Temperature sensor 200, receiver 21, infrared receiving module 22, amplifier circuit 23, demodulation circuit 24, processor 25, receiver storage module 26, display module 27, output terminal 5, lighting emission device

Detailed ways

The first implementation:

1 is a power tool communication system according to the first embodiment of the present invention. The power tool communication system includes a power tool 100 and a receiver 200, and the power tool 100 transmits tool information to the receiver through the power tool 100. 200 to determine the tool information status, the power tool 100 includes a power source 4 and a controller 1 powered by the power source 4, a motor 3 and a lighting emitting device 5; the controller 1 is electrically connected to the lighting emitting device 5 And control its on and off; the light wave emitted by the illumination emitting device 5 includes infrared light. The controller 1 includes a control unit 11, a storage unit 12 and an encoding unit 13; the storage unit 12 stores tool information of the electric tool 100 and a preset transmission protocol; the transmission protocol includes a standard infrared transmission protocol Or a custom transmission protocol, in this embodiment, a standard infrared transmission protocol is used, such as NEC protocol, ITT protocol, etc., in other embodiments, a custom transmission protocol can also be used, and the custom transmission protocol is more in the process of signal transmission. Security and privacy; the encoding unit 13 generates the tool information encoded signal according to the standard infrared transmission protocol, and transmits the tool information encoded signal to the modulation circuit 14 electrically connected to the controller 1, The modulation circuit 14 modulates the tool information coded signal and outputs it to the illumination transmitter 5, and the illumination transmitter 5 sends light waves containing the tool information coded signal to the receiver 200, and the receiver 200 receives the light wave. The controller 200 receives the infrared light emitted by the illumination emitting device 5 and determines the tool information state of the electric tool 100 .

The receiver 200 includes an electrically connected infrared receiving module 21 , an amplifier circuit 22 , a demodulation circuit 23 , a processor 24 and a receiver storage module 25 . The infrared light of the tool information encoded signal is output to the amplification circuit 22 and the demodulation circuit 23 for signal amplification and demodulation, and the processor 24 receives the demodulated tool information encoded signal and decodes it , the receiver storage module 25 stores the tool information obtained by decoding. In some other embodiments, the infrared receiving module 21 can also be set as a visible light receiving module, and the visible light receiving module recognizes and receives the visible light with the tool information encoded signal emitted by the illumination emitting device 5 .

The power source 4 includes a rechargeable battery pack in this embodiment, and of course, a power cord directly connected to the AC can also be used; the power tool 100 is provided with a control switch (not shown), and the control switch is electrically connected To the controller 1, the control switch controls the lighting emitting device 5 to switch between a lighting mode, the tool information sending mode, and an off mode. The control switch sets the lighting emitting device 5 in the mode of transmitting the tool information, and the light wave emitted by the lighting emitting device 5 carries the modulated encoded signal of the tool information and is received by the receiver 200 , The modulated tool information coded signal is not easily disturbed by external light waves due to its high frequency, which improves the anti-interference performance. The infrared receiving module 21 of the receiver 200 recognizes and receives the infrared light waves in the light waves. , demodulate and decode to obtain the original tool information, store the tool information in the receiver storage module 25, and the power tool 100 transmits the tool information by using the lighting emitting device 5 it has, without additional The transmission device is added to save the manufacturing cost of the power tool; and the speed of infrared transmission is very fast, and the modulated light wave of the tool information encoding signal is embedded, and its flickering frequency is also extremely high, which cannot be detected by the human eye, so it does not affect the The lighting function of the lighting emission device 5; the control switch sets the lighting emission device 5 in the lighting mode, and the lighting emission device 5 emits ordinary light waves that do not carry the encoded signal of the tool information. The tool information mode, the lighting mode saves more power; the control switch sets the lighting emitting device 5 in the off mode, and the controller 1 controls the lighting emitting device 5 to turn off and not emit light waves to the outside world.

The receiver 200 includes a display module 26, and the display module 26 displays the received tool information, so as to facilitate the user to judge the status of the power tool 100; Output terminal 27, the tool information can be transmitted to the external device through the output terminal 27, displayed or stored by the external device, the external device can be a mobile phone or a computer, the output terminal 27 includes more than one Of course, the output terminal 27 can also be other interfaces, such as a serial port or a parallel port. In other embodiments, the receiver 200 can also be provided with the display module 26 alone without the output terminal 27, or The output terminal 27 is provided alone without the display module 26 .

The controller 1 is electrically connected with a drive module 32, and the controller 1 controls the operation of the motor 3 through the drive module 32; the motor 3 includes a stator and a rotor; A rotor position detection unit 31 for rotor position, the rotor position detection unit 31 includes a back electromotive force detection circuit or a position sensor, the rotor position detection unit 31 is electrically connected to the controller 1, and outputs the rotor position to the The controller 1; the controller 1 calculates the rotational speed of the motor 3 according to the rotor position; the power source 4 is provided with a temperature sensor 42 for detecting the temperature of the power source 4 and a voltage detector for detecting the voltage of the power source 4 The circuit 41, the temperature sensor 42 and the voltage detection circuit 41 are electrically connected to the controller 1, and output the temperature and the voltage to the controller 1; the motor 3 is provided with detecting the The current detection circuit 33 of the current of the motor 3, the current detection circuit 33 is coupled between the controller 1 and the drive module 32, by collecting the bus current of the drive module 32 and outputting it to the controller 1 Indicates the current of the motor 3; the rotor is connected with an output shaft (not shown), the output shaft is provided with a torsion sensor (not shown) that detects the torque of the output shaft, and the torsion sensor is electrically connected to the the controller 1 , and output the torque to the controller 1 .

The tool information includes at least operation information and/or usage information; the operation information includes at least one of the rotational speed, the temperature, the voltage, the current and the torque; the usage information at least includes the usage information one of user, usage environment, usage frequency, usage time, and usage location, the tool information may also include other tool information for different types of power tools, such as the power tool 100 with a blade, the tool information may include a blade The total use time, the wear state of the blade, etc.

The first embodiment of the present invention also provides a power tool communication method applied to the above-mentioned power tool communication system, and the power tool communication method includes the following steps:

Generating a tool information coded signal from the tool information of the electric tool 100 according to a preset transmission protocol; after modulating the tool information coded signal, it is transmitted to the external receiver 200 in the form of a light wave, and the light wave includes infrared light; The receiver 200 receives the infrared light with the tool information coded signal, amplifies and demodulates the modulated tool information coded signal, and then decodes it, and stores the decoded tool information. , to determine the tool information status of the power tool 100 .

Second implementation:

FIG. 2 shows a power tool communication system according to the second embodiment of the present invention. The difference between the second embodiment and the first embodiment is that the power tool communication system does not have the power tool communication system shown in FIG. 1 . Modulation circuit 14 and demodulation circuit 23, the encoding unit 13 generates tool information encoded signals from the tool information of the power tool 100 according to a standard infrared transmission protocol, and outputs the encoded signals to the lighting emitting device 5, and the lighting emitting device 5 The light wave containing the tool information coded signal is directly sent to the receiver 200. Since the unmodulated tool information coded signal has a low frequency and is easily interfered by external light waves, the lighting transmitter 5 and the infrared receiving module 21 The transmission of the tool information encoded signal is performed by shielding external light waves, for example, directly placing the illumination emitting device 5 and the infrared receiving module 21 in a low-temperature dark environment. With this arrangement, the power tool 100 transmits tool information by using the illumination emitting device 5 provided by itself, without adding an additional emitting device, which saves the manufacturing cost; and the speed of infrared transmission is very fast, and the tool information encoding signal is embedded The flickering frequency of the light wave cannot be detected by the human eye, so it does not affect the lighting function of the lighting emitting device 5. At the same time, compared with the first embodiment, the modulation and demodulation process of the tool information encoded signal is omitted, which further simplifies Circuits reduce manufacturing costs.

The second embodiment of the present invention also provides a power tool communication method applied to the above-mentioned power tool communication system, and the power tool communication method includes the following steps:

The tool information of the electric tool 100 is generated according to a preset transmission protocol to generate a tool information encoded signal; the tool information encoded signal is transmitted to the external receiver 200 in the form of light waves, and the light waves include infrared light; the receiving The device 200 receives the infrared light with the tool information encoded signal, amplifies and decodes the received tool information encoded signal; stores the decoded tool information to determine the tool of the power tool 100 Information status.

The present invention is not limited to the above-described specific embodiments. Those of ordinary skill in the art can easily understand that, without departing from the principle and scope of the present invention, there are many alternative solutions for the power tool communication system and communication method of the present invention. The protection scope of the present invention is subject to the content of the claims.

Claims (13)

1. A power tool communication system comprising a power tool comprising a power source and a controller, a motor and an illumination emitting device powered by the power source; the method is characterized in that: the power tool communication system includes a receiver that receives tool information of the power tool; the controller is electrically connected to the illumination emitting device and controls the illumination emitting device to be on or off, and the light waves emitted by the illumination emitting device comprise infrared light; the controller comprises a control unit and an encoding unit; the coding unit generates tool information coding signals according to a transmission protocol preset by the controller and outputs the tool information coding signals to the lighting emitting device; the illumination transmitting device transmits light waves containing the tool information coding signals, and the receiver receives infrared light transmitted by the illumination transmitting device and determines the tool information state of the electric tool.

2. The power tool communication system of claim 1, wherein: the receiver comprises a receiving module, an amplifying circuit, a decoding unit and a receiver storage module which are electrically connected, wherein the receiving module comprises an infrared receiving module; the receiving module receives infrared light containing the tool information coding signal and outputs the infrared light to the amplifying circuit for signal amplification, the decoding unit receives and decodes the amplified tool information coding signal, and the receiver storage module stores the tool information obtained after decoding.

3. The power tool communication system of claim 2, wherein: the controller is electrically connected with a modulation circuit, and the modulation circuit modulates the tool information coding signal and outputs the tool information coding signal to the illumination emitting device; the controller comprises a corresponding demodulation circuit, and the demodulation circuit demodulates the modulated tool information coding signal and outputs the tool information coding signal to the decoding unit.

4. The power tool communication system of claim 2, wherein: and the illumination transmitting device and the receiving module shield external light waves to transmit the tool information coding signal.

5. The power tool communication system of any one of claims 1-4, wherein: the controller comprises a storage unit, and the storage unit stores the tool information and the transmission protocol; the transmission protocol comprises a standard infrared transmission protocol or a custom transmission protocol.

6. The power tool communication system of any one of claims 1-4, wherein: the motor comprises a stator and a rotor; the motor is provided with a rotor position detection unit for detecting the position of the rotor, the rotor position detection unit is electrically connected with the controller and outputs the position of the rotor to the controller, and the controller calculates the rotating speed of the motor according to the position of the rotor; the power supply is provided with a temperature sensor for detecting the temperature of the power supply and a voltage detection circuit for detecting the voltage of the power supply, and the temperature sensor and the voltage detection circuit are electrically connected with the controller and output the temperature and the voltage to the controller; the motor is provided with a current detection circuit for detecting the current of the motor, and the current detection circuit is electrically connected with the controller and outputs the current to the controller; the rotor is connected with an output shaft, the output shaft is provided with a torque sensor for detecting the torque of the output shaft, and the torque sensor is electrically connected with the controller and outputs the torque to the controller.

7. The power tool communication system of claim 6, wherein: the tool information at least comprises operation information and/or use information; the operational information includes at least one of the rotational speed, the temperature, the voltage, the current, and the torque; the usage information includes at least one of a user, a usage environment, a usage frequency, a usage duration, and a usage place.

8. The power tool communication system of any one of claims 1-4, wherein: the electric tool is provided with a control switch which controls the illumination emission module to switch among an illumination mode, a tool information sending mode and a closing mode.

9. The power tool communication system of any one of claims 1-4, wherein: the receiver comprises a display module which displays the received tool information.

10. The power tool communication system of any one of claims 1-4, wherein: the receiver includes an output terminal to which an external device is connected, and the tool information is transmitted to the external device through the output terminal.

11. A power tool communication method, comprising:

generating tool information coding signals according to the tool information of the electric tool and a preset transmission protocol; transmitting the tool information coding signal to the outside in the form of light waves, wherein the light waves contain infrared light; the receiver receives the infrared light with the tool information code signal and determines the tool information state of the electric tool.

12. The power tool communication method of claim 11, further comprising the steps of: the tool information coding signal is modulated and then transmitted to an external receiver in a light wave form; and amplifying and demodulating the received modulated tool information coding signal, and then decoding and storing the tool information coding signal.

13. The power tool communication method of claim 11, further comprising the steps of: a receiver for shielding the light wave containing the tool information coding signal from external light waves and transmitting the interference to the outside; and amplifying the received tool information coding signal, and then decoding and storing the tool information coding signal.

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