Intelligent seat electric state safety detection control device

Abstract

The invention discloses an intelligent seat electric state safety detection control device, which relates to the technical field of seat electric state detection and comprises a current sampling module and a voltage sampling module, the detection switching module transmits current signals to the signal processing module for signal processing, the detection switching module transmits voltage signals to the signal processing module for signal processing, the micro-control module receives the signals, and the micro-control module identifies bar code information of the seat through the code scanning gun device and determines the number of direct current motors of the seat. When the number of the direct-current motors of the seat exceeds the number of the detectable direct-current motors, the detection switching module is controlled to switch a signal transmission path when the extra group of direct-current motors work, and current and voltage detection of the group of direct-current motors is completed. According to the intelligent seat electric state safety detection control device, the detection efficiency can be improved, and the detection work of the seat motor can be completed.

Description

Technical Field

[0001] This invention relates to the field of seat electrical status detection technology, specifically an intelligent seat electrical status safety detection and control device. Background Technology

[0002] A smart seat is a type of seat that enables automatic adjustment and personalized adaptation. Its functions are diverse, ranging from simple vibration massage to complex automatic adjustments (such as backrest tilt, seat height adjustment, and lumbar support). The specific functions depend on the seat's configuration level, functional positioning, design complexity, and cost considerations. This smart seat uses multiple DC motors for automatic adjustment control. To ensure the safety of the motors, a status detection device composed of multiple current and voltage detection circuits is used to monitor the DC motors in real time. However, when the number of DC motors in the smart seat exceeds the number that the status detection device can detect, it will be unable to properly detect the electrical status of the DC motors, thus requiring improvement. Summary of the Invention

[0003] This invention provides an intelligent seat electrical state safety detection and control device to solve the problems mentioned in the background art.

[0004] According to an embodiment of the present invention, a smart seat electrical state safety detection and control device is provided, comprising:

[0005] The seat motor module is used to receive DC power and control the first DC motor to operate in both forward and reverse directions.

[0006] The voltage sampling module is connected to the seat motor module and is used to sample the voltage of the first DC motor and output a third sampling signal. It is also connected to the second DC motor and samples the voltage of the second DC motor, outputting a fourth sampling signal.

[0007] The current sampling module is connected to the seat motor module and is used to sample the current of the first DC motor and output a first sampling signal, and to sample the current of the connected second DC motor and output a second sampling signal.

[0008] The detection switching module is connected to the voltage sampling module, the current sampling module, the microcontroller module, and the seat motor module. It is used to transmit the first sampling signal and the third sampling signal to the signal processing module. When it receives the switching signal output by the microcontroller module, it transmits the second sampling signal and the fourth sampling signal to the signal processing module.

[0009] The signal processing module, connected to the detection switching module, is used to perform current-to-voltage conversion, low-pass filtering, high-pass filtering, and pulse shaping on the first or second sampled signal and output the first detection signal; and to perform voltage following processing on the third or fourth sampled signal and output the second detection signal.

[0010] The microcontroller module, connected to the signal processing module, is used to control the forward and reverse rotation of the seat motor module. It receives the first detection signal and the second detection signal, identifies the barcode information of the seat through the barcode scanner and determines the number of DC motors in the seat. When the number of DC motors in the seat exceeds the number of detectable DC motors, and the first connected DC motor is not working while the second connected DC motor is working, a switching signal is output.

[0011] As a further embodiment of the present invention: the seat motor module includes a power port, a first capacitor, a first H-bridge device, and a first DC motor; the microcontroller module includes a first controller and a barcode scanner device; the current sampling module includes a first resistor;

[0012] Preferably, the first end of the power supply port is connected to the first input end of the first H-bridge device and is connected to the second end of the power supply port and the first end of the first resistor through the first capacitor. The second end of the first resistor is connected to the second input end of the first H-bridge device. The first output end and the second output end of the first H-bridge device are respectively connected to one end and the other end of the first DC motor. The control end of the first H-bridge device is connected to the IO1 end of the first controller. The first output end and the second output end of the scanner device are respectively connected to the IO5 end and the IO6 end of the first controller.

[0013] As a further embodiment of the present invention: the current sampling module further includes a first detection interface; the detection switching module includes a second analog switch, a third analog switch, a sixth resistor, a first voltage regulator, and a first switching transistor;

[0014] Preferably, the third terminal of the third analog switch is connected to the first terminal of the first resistor, the third terminal of the second analog switch is connected to the second terminal of the first resistor, the eighth terminal of the second analog switch and the eighth terminal of the third analog switch are respectively connected to one terminal and the second terminal of the first detection interface, the fifth terminal of the third analog switch is connected to the fifth terminal of the second analog switch and the collector of the first switching transistor and connected to the first voltage regulator through the sixth resistor, the emitter of the first switching transistor is grounded, and the sixth terminals of the second analog switch and the sixth terminals of the third analog switch are both connected to the IO2 terminal of the first controller and the base of the first switching transistor.

[0015] As a further embodiment of the present invention: the voltage sampling module includes a second resistor, a third resistor, a fourth resistor, a fifth resistor, and a second detection interface; the detection switching module also includes a first analog switch;

[0016] Preferably, one end of the third resistor is connected to the third terminal of the first analog switch and connected to the first output terminal of the first H-bridge device through the second resistor, the other end of the third resistor is connected to the second output terminal of the first H-bridge device, the fifth terminal of the first analog switch is connected to the collector of the first switching transistor, the eighth terminal of the first analog switch is connected to one end of the first resistor and connected to the first terminal of the second detection interface through the fourth resistor, the other end of the fifth resistor is connected to the second terminal of the second detection interface, and the sixth terminal of the first analog switch is connected to the IO2 terminal of the first controller.

[0017] As a further embodiment of the present invention: the signal processing module includes a first operational amplifier, a second operational amplifier, a seventh resistor, an eighth resistor, and a ninth resistor;

[0018] Preferably, the non-inverting input of the first operational amplifier is connected to the fourth and ninth terminals of the first analog switch, the output and inverting inputs of the first operational amplifier are both connected to the IO3 terminal of the first controller, the non-inverting input of the second operational amplifier is connected to the fourth and ninth terminals of the second analog switch through the seventh resistor, the inverting input of the second operational amplifier is connected to one end of the ninth resistor and connected to the fourth and ninth terminals of the third analog switch through the eighth resistor, and the output of the second operational amplifier is connected to the other end of the ninth resistor.

[0019] As a further embodiment of the present invention: the signal processing module further includes a second voltage regulator, a tenth resistor, an eleventh resistor, a twelfth resistor, a thirteenth resistor, a third operational amplifier, a fourteenth resistor, a first optocoupler, and a fifteenth resistor;

[0020] Preferably, the inverting input of the third operational amplifier is connected to one end of the thirteenth resistor and then connected to the second voltage regulator and one end of the fifteenth resistor through the twelfth resistor. The other end of the fifteenth resistor is connected to the third end of the first optocoupler and the IO4 terminal of the first controller. The non-inverting input of the third operational amplifier is connected to the first end of the tenth resistor and then connected to the output terminal of the third operational amplifier and one end of the fourteenth resistor through the eleventh resistor. The other end of the fourteenth resistor is connected to the first end of the first optocoupler. The second end of the first optocoupler and the other end of the thirteenth resistor are both grounded, and the fourth end of the first optocoupler is grounded.

[0021] As a further embodiment of the present invention: the signal processing module further includes a sixteenth resistor, a seventeenth resistor, an eighteenth resistor, a nineteenth resistor, a third capacitor, a second capacitor, and a fourth operational amplifier;

[0022] Preferably, the non-inverting input of the fourth operational amplifier is connected to one end of the second capacitor and is connected to one end of the sixteenth resistor and one end of the third capacitor through the seventeenth resistor. The other end of the third capacitor is connected to the output of the fourth operational amplifier and is connected to the inverting input of the fourth operational amplifier and one end of the eighteenth resistor through the nineteenth resistor. The other end of the eighteenth resistor and the other end of the second capacitor are both grounded. The other end of the sixteenth resistor is connected to the output of the second operational amplifier.

[0023] As a further embodiment of the present invention: the signal processing module further includes a fourth capacitor, a twentieth resistor, a twenty-first resistor, a fifth operational amplifier, and a twenty-second resistor;

[0024] Preferably, the non-inverting input of the fifth operational amplifier is connected to one end of the twenty-first resistor and then connected to the output of the fourth operational amplifier through the fourth capacitor. The inverting input of the fifth operational amplifier is connected to one end of the twentieth resistor and then connected to the output of the fifth operational amplifier and the second end of the tenth resistor through the twenty-second resistor. The other ends of the twentieth and the twenty-first resistors are both grounded.

[0025] Compared with the prior art, the beneficial effects of the present invention are as follows: The intelligent seat electrical state safety detection and control device of the present invention can perform current sampling and voltage sampling on the first DC motor in the seat motor module by a current sampling module and a voltage sampling module. The detection switching module transmits the sampled current signal to the signal processing module for current-voltage conversion, low-pass filtering, high-pass filtering and pulse shaping processing, and is received by the microcontroller module. The detection switching module transmits the sampled voltage signal to the signal processing module for voltage following processing, and is received by the microcontroller module. At the same time, the microcontroller module identifies the barcode information of the seat and determines the number of DC motors of the seat through a barcode scanner. When the number of DC motors of the seat exceeds the number of detectable DC motors, when the extra set of DC motors is working, the detection switching module will switch the signal transmission path to complete the current and voltage detection of the set of DC motors, thereby improving the detection efficiency and completing the detection of the seat motors. Attached Figure Description

[0026] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a schematic block diagram of a smart seat electrical status safety detection and control device provided in an embodiment of the present invention.

[0028] Figure 2 The circuit diagram is provided for an embodiment of the present invention for a smart seat electrical state safety detection and control device.

[0029] Figure 3 This is a first circuit diagram of a signal processing module provided in an embodiment of the present invention.

[0030] Figure 4 This is a second circuit diagram of the signal processing module provided in an embodiment of the present invention. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] In one embodiment, please participate Figure 1 A smart seat electrical status safety detection and control device, comprising:

[0033] Seat motor module 1 is used to receive DC power and control the first DC motor to operate in both forward and reverse directions;

[0034] Voltage sampling module 2 is connected to seat motor module 1 and is used to sample the voltage of the first DC motor and output a third sampling signal. It is also connected to the second DC motor and samples the voltage of the second DC motor, and outputs a fourth sampling signal.

[0035] The current sampling module 3 is connected to the seat motor module 1 and is used to sample the current of the first DC motor and output a first sampling signal, and to sample the current of the connected second DC motor and output a second sampling signal.

[0036] The detection switching module 4 is connected to the voltage sampling module 2, the current sampling module 3, the microcontroller module 6 and the seat motor module 1. It is used to transmit the first sampling signal and the third sampling signal to the signal processing module 5. When it receives the switching signal output by the microcontroller module 6, it transmits the second sampling signal and the fourth sampling signal to the signal processing module 5.

[0037] Signal processing module 5, connected to detection switching module 4, is used to perform current-voltage conversion, low-pass filtering, high-pass filtering and pulse shaping on the first sampling signal or the second sampling signal and output the first detection signal, and to perform voltage following processing on the third sampling signal or the fourth sampling signal and output the second detection signal.

[0038] The microcontroller module 6, connected to the signal processing module 5, is used to control the forward and reverse rotation of the seat motor module 1. It receives the first detection signal and the second detection signal, identifies the barcode information of the seat through the barcode scanner and determines the number of DC motors of the seat. When the number of DC motors of the seat exceeds the number of detectable DC motors, and the first connected DC motor is not working while the second connected DC motor is working, it outputs a switching signal.

[0039] In a specific embodiment, the aforementioned seat motor module 1 can be a seat motor circuit composed of a power interface, an H-bridge device, and a DC motor, which can be connected to DC power and control the DC motor to operate in forward and reverse directions, thereby controlling the movement of the seat; the aforementioned voltage sampling module 2 can be a voltage sampling circuit composed of a resistor and a detection interface, which can perform voltage division sampling, connect to both ends of the second DC motor and perform voltage division sampling on the second DC motor, which is an additional DC motor that needs to be detected, that is, a group of DC motors in the seat that exceed the number of DC motors that the intelligent seat electrical state safety detection and control device can detect; the aforementioned current sampling module 3 can be a current sampling circuit composed of a detection interface and a resistor, which can perform current sampling processing on the first DC motor or the additional second DC motor in the seat motor module 1; the aforementioned detection switching module 4 can be an analog The detection and switching circuit, composed of switches, resistors, transistors, and voltage regulators, can transmit signals and is controlled by the microcontroller module 6 to switch the signal transmission path. The signal processing module 5 can be a signal processing circuit composed of operational amplifiers, resistors, optocouplers, etc., which can perform current-to-voltage conversion, low-pass filtering, high-pass filtering, and pulse shaping on the first or second sampled signal (current signal), and voltage following processing on the third or fourth sampled signal (voltage signal). The microcontroller module 6 can be a microcontroller circuit composed of a microcontroller and a barcode scanner. The barcode scanner identifies the barcode information of the seat, and the microcontroller determines the number of DC motors in the seat. The microcontroller integrates arithmetic logic unit, controller, memory, input / output devices, and many other components to realize functions such as signal processing, data storage, module control, and timing control.

[0040] In this embodiment, please refer to Figure 2 , Figure 3 and Figure 4 The seat motor module 1 includes a power port, a first capacitor C1, a first H-bridge device T1, and a first DC motor; the microcontroller module 6 includes a first controller U1 and a barcode scanner; the current sampling module 3 includes a first resistor R1.

[0041] Specifically, the first end of the power port is connected to the first input end of the first H-bridge device T1 and is connected to the second end of the power port and the first end of the first resistor R1 through the first capacitor C1. The second end of the first resistor R1 is connected to the second input end of the first H-bridge device T1. The first output end and the second output end of the first H-bridge device T1 are respectively connected to one end and the other end of the first DC motor. The control end of the first H-bridge device T1 is connected to the IO1 end of the first controller U1. The first USB interface and the second USB interface of the scanner device are respectively connected to the IO5 end and the IO6 end of the first controller U1.

[0042] In a specific embodiment, the first H-bridge device T1 can be composed of four sets of N-channel MOS transistors, controlled by four sets of drive signals output from the IO1 terminal of the first controller U1 to control the forward and reverse rotation of the first DC motor; the first controller U1 can be an MCU chip; the scanning gun device can be composed of a barcode scanner and a USB interface, which reads the barcode information affixed to the seat or accompanying tooling, and the first controller U1 can determine the number of DC motors of the seat through an internally maintained local database or configuration file, which records the DC motor information of seats with different barcode information.

[0043] Furthermore, the current sampling module 3 also includes a first detection interface; the detection switching module 4 includes a second analog switch J2, a third analog switch J3, a sixth resistor R6, a first voltage regulator VCC1, and a first switching transistor V1;

[0044] Specifically, the third terminal of the third analog switch J3 is connected to the first terminal of the first resistor R1, the third terminal of the second analog switch J2 is connected to the second terminal of the first resistor R1, the eighth terminal of the second analog switch J2 and the eighth terminal of the third analog switch J3 are respectively connected to one terminal and the second terminal of the first detection interface, the fifth terminal of the third analog switch J3 is connected to the fifth terminal of the second analog switch and the collector of the first switching transistor V1 and connected to the first voltage regulator VCC1 through the sixth resistor R6, the emitter of the first switching transistor V1 is grounded, and the sixth terminals of the second analog switch J2 and the sixth terminals of the third analog switch J3 are both connected to the IO2 terminal of the first controller U1 and the base of the first switching transistor V1.

[0045] In a specific embodiment, the first detection interface is connected to both ends of the current sampling resistor of the second DC motor to detect the current information of the second DC motor; the second analog switch J2 and the third analog switch J3 can both be CD4066 chips; the first switching transistor V1 can be an NPN transistor.

[0046] Furthermore, the voltage sampling module 2 includes a second resistor R2, a third resistor R3, a fourth resistor R4, a fifth resistor R5, and a second detection interface; the detection switching module 4 also includes a first analog switch J1;

[0047] Specifically, one end of the third resistor R3 is connected to the third terminal of the first analog switch J1 and then to the first output terminal of the first H-bridge device T1 via the second resistor R2. The other end of the third resistor R3 is connected to the second output terminal of the first H-bridge device T1. The fifth terminal of the first analog switch J1 is connected to the collector of the first switching transistor V1. The eighth terminal of the first analog switch J1 is connected to one end of the first resistor and then to the first terminal of the second detection interface via the fourth resistor R4. The other end of the fifth resistor R5 is connected to the second terminal of the second detection interface. The sixth terminal of the first analog switch J1 is connected to the IO2 terminal of the first controller U1.

[0048] In a specific embodiment, the second detection interface is connected to both ends of the second DC motor to detect the voltage information of the second DC motor; the first analog switch J1 can be a CD4066 chip.

[0049] Furthermore, the signal processing module 5 includes a first operational amplifier OP1, a second operational amplifier OP2, a seventh resistor R7, an eighth resistor R8, and a ninth resistor R9;

[0050] Specifically, the non-inverting input of the first operational amplifier OP1 is connected to the fourth and ninth terminals of the first analog switch J1. The output and inverting inputs of the first operational amplifier OP1 are both connected to the IO3 terminal of the first controller U1. The non-inverting input of the second operational amplifier OP2 is connected to the fourth and ninth terminals of the second analog switch J2 through the seventh resistor R7. The inverting input of the second operational amplifier OP2 is connected to one end of the ninth resistor R9 and to the fourth and ninth terminals of the third analog switch J3 through the eighth resistor R8. The output of the second operational amplifier OP2 is connected to the other end of the ninth resistor R9.

[0051] In a specific embodiment, both the first operational amplifier OP1 and the second operational amplifier OP2 can be selected as OP07 operational amplifiers. The first operational amplifier OP1 performs voltage follower processing, and the second operational amplifier OP2, together with the seventh resistor R7, the eighth resistor R8 and the ninth resistor R9, performs current-to-voltage conversion and signal amplification processing.

[0052] Furthermore, the signal processing module 5 also includes a second voltage regulator VCC2, a tenth resistor R10, an eleventh resistor R11, a twelfth resistor R12, a thirteenth resistor R13, a third operational amplifier OP3, a fourteenth resistor R14, a first optocoupler U2, and a fifteenth resistor R15.

[0053] Specifically, the inverting input of the third operational amplifier OP3 is connected to one end of the thirteenth resistor R13 and then connected to the second voltage regulator VCC2 and one end of the fifteenth resistor R15 through the twelfth resistor R12. The other end of the fifteenth resistor R15 is connected to the third end of the first optocoupler U2 and the IO4 terminal of the first controller U1. The non-inverting input of the third operational amplifier OP3 is connected to the first end of the tenth resistor R10 and then connected to the output terminal of the third operational amplifier OP3 and one end of the fourteenth resistor R14 through the eleventh resistor R11. The other end of the fourteenth resistor R14 is connected to the first end of the first optocoupler U2. The second end of the first optocoupler U2 and the other end of the thirteenth resistor R13 are both grounded. The fourth end of the first optocoupler U2 is grounded.

[0054] In a specific embodiment, the third operational amplifier OP3 can be an OP07 operational amplifier, which, together with the second voltage regulator VCC2, the tenth resistor R10, the eleventh resistor R11, the twelfth resistor R12, the thirteenth resistor R13, the fourteenth resistor R14, the first optocoupler U2, and the fifteenth resistor R15, performs pulse shaping and isolated transmission so that the IO4 terminal of the first controller U1 can read the count of the isolated square wave signal and know the current status. The first optocoupler U2 can be a PC817 optocoupler.

[0055] Furthermore, the signal processing module 5 also includes a sixteenth resistor R16, a seventeenth resistor R17, an eighteenth resistor R18, a nineteenth resistor R19, a third capacitor C3, a second capacitor C2, and a fourth operational amplifier OP4;

[0056] Specifically, the non-inverting input of the fourth operational amplifier OP4 is connected to one end of the second capacitor C2, and through the seventeenth resistor R17, it is connected to one end of the sixteenth resistor R16 and one end of the third capacitor C3. The other end of the third capacitor C3 is connected to the output of the fourth operational amplifier OP4, and through the nineteenth resistor, it is connected to the inverting input of the fourth operational amplifier OP4 and one end of the eighteenth resistor R18. The other end of the eighteenth resistor R18 and the other end of the second capacitor C2 are both grounded. The other end of the sixteenth resistor R16 is connected to the output of the second operational amplifier OP2.

[0057] In a specific embodiment, the fourth operational amplifier OP4 can be an OP07 operational amplifier, which, together with the sixteenth resistor R16, the seventeenth resistor R17, the eighteenth resistor R18, the nineteenth resistor R19, the third capacitor C3, and the second capacitor C2, performs low-pass filtering.

[0058] Furthermore, the signal processing module 5 also includes a fourth capacitor C4, a twentieth resistor R20, a twenty-first resistor R21, a fifth operational amplifier OP5, and a twenty-second resistor R22.

[0059] Specifically, the non-inverting input of the fifth operational amplifier OP5 is connected to one end of the twenty-first resistor R21 and then connected to the output of the fourth operational amplifier OP4 through the fourth capacitor C4. The inverting input of the fifth operational amplifier OP5 is connected to one end of the twentieth resistor R20 and then connected to the output of the fifth operational amplifier OP5 and the second end of the tenth resistor R10 through the twenty-second resistor R22. The other end of the twentieth resistor R20 and the other end of the twenty-first resistor R21 are both grounded.

[0060] In a specific embodiment, the fifth operational amplifier OP5 can be selected as OP07 operational amplifier, and high-pass filtering is performed in conjunction with the fourth capacitor C4, the twentieth resistor R20, the twenty-first resistor R21, and the twenty-second resistor R22.

[0061] The working principle of the intelligent seat electrical status safety detection and control device of the present invention is as follows: DC power is connected through the power interface. The IO1 terminal of the first controller U1 controls the working state of the first H-bridge device T1, controlling the first DC motor to rotate forward or in reverse. The first resistor R1 samples the current of the first DC motor and outputs a first sampling signal. The second resistor R2 and the third resistor R3 sample the voltage of the first DC motor and output a third sampling signal. The first regulated power supply VCC1 triggers the third and fourth terminals of the second analog switch J2 to conduct through the sixth resistor R6. The third and fourth terminals of the first analog switch J1 and the third analog switch J3 are also conducted to transmit the first sampling signal. The first sampled signal and the third sampled signal are processed by the second operational amplifier OP2, the seventh resistor R7, the eighth resistor R8, and the ninth resistor R9 for current-to-voltage conversion and signal amplification. The second sampled signal is then low-pass filtered by the sixteenth resistor R16, the seventeenth resistor R17, the eighteenth resistor R18, the nineteenth resistor R19, the third capacitor C3, the second capacitor C2, and the fourth operational amplifier OP4. The third sampled signal is high-pass filtered by the fourth capacitor C4, the twentieth resistor R20, the twenty-first resistor R21, the fifth operational amplifier OP5, and the twenty-second resistor R22. Finally, the third sampled signal is regulated by the second voltage source VCC2, the tenth resistor R10, the eleventh resistor R11, the twelfth resistor R12, the thirteenth resistor R13, and the third operational amplifier OP4. 3. The fourteenth resistor R14, the first optocoupler U2, and the fifteenth resistor R15 perform pulse shaping and isolation to output a square wave signal, i.e., the first detection signal, which is received by the IO4 terminal of the first controller U1. The third sampling signal is processed by the first operational amplifier OP1 for voltage following and is received by the IO3 terminal of the first controller U1. Simultaneously, the barcode information of the seat is identified by the barcode scanner, and the first controller U1 determines the number of DC motors of the seat through its internally maintained local database or configuration file. When the number of DC motors of the seat exceeds the number of detectable DC motors, the first detection interface is connected to the excess DC motor, i.e., the second DC motor, to measure the current. The sampling resistor is connected to both sides to sample the current of the second DC motor. Similarly, the two ends of the second detection interface are connected to both sides of the second DC motor to sample the voltage of the second DC motor. When the first DC motor is not working and the second DC motor is working, the IO2 terminal of the first controller U1 will output a switching signal to control the first switch V1 to turn on, the eighth and ninth terminals of the first analog switch J1 to turn on, the eighth and ninth terminals of the second analog switch J2 to turn on, and the eighth and ninth terminals of the third analog switch J3 to turn on. Then, the signal processing module 5 processes the sampled current and voltage signals of the second DC motor, and then receives them from the IO4 and IO3 terminals of the first controller U1.

[0062] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0063] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A smart seat electrical status safety detection and control device, characterized in that, The circuit includes: The seat motor module is used to receive DC power and control the first DC motor to operate in both forward and reverse directions. The voltage sampling module is connected to the seat motor module and is used to sample the voltage of the first DC motor and output a third sampling signal. It is also connected to the second DC motor and samples the voltage of the second DC motor, outputting a fourth sampling signal. The current sampling module is connected to the seat motor module and is used to sample the current of the first DC motor and output a first sampling signal, and to sample the current of the connected second DC motor and output a second sampling signal. The detection switching module is connected to the voltage sampling module, the current sampling module, the microcontroller module, and the seat motor module. It is used to transmit the first sampling signal and the third sampling signal to the signal processing module. When it receives the switching signal output by the microcontroller module, it transmits the second sampling signal and the fourth sampling signal to the signal processing module. The signal processing module, connected to the detection switching module, is used to perform current-to-voltage conversion, low-pass filtering, high-pass filtering, and pulse shaping on the first or second sampled signal and output the first detection signal; and to perform voltage following processing on the third or fourth sampled signal and output the second detection signal. The microcontroller module, connected to the signal processing module, is used to control the forward and reverse rotation of the seat motor module. It receives the first detection signal and the second detection signal, identifies the barcode information of the seat through the barcode scanner and determines the number of DC motors in the seat. When the number of DC motors in the seat exceeds the number of detectable DC motors, and the first connected DC motor is not working while the second connected DC motor is working, a switching signal is output.

2. The intelligent seat electrical state safety detection and control device according to claim 1, characterized in that, The seat motor module includes a power port, a first capacitor, a first H-bridge device, and a first DC motor; the microcontroller module includes a first controller and a barcode scanner device; the current sampling module includes a first resistor. The first end of the power port is connected to the first input end of the first H-bridge device and is connected to the second end of the power port and the first end of the first resistor through the first capacitor. The second end of the first resistor is connected to the second input end of the first H-bridge device. The first output end and the second output end of the first H-bridge device are respectively connected to one end and the other end of the first DC motor. The control end of the first H-bridge device is connected to the IO1 end of the first controller. The first output end and the second output end of the scanner device are respectively connected to the IO5 end and the IO6 end of the first controller.

3. The intelligent seat electrical state safety detection and control device according to claim 2, characterized in that, The current sampling module further includes a first detection interface; the detection switching module includes a second analog switch, a third analog switch, a sixth resistor, a first voltage regulator, and a first switching transistor; The third terminal of the third analog switch is connected to the first terminal of the first resistor, the third terminal of the second analog switch is connected to the second terminal of the first resistor, the eighth terminal of the second analog switch and the eighth terminal of the third analog switch are respectively connected to one terminal and the second terminal of the first detection interface, the fifth terminal of the third analog switch is connected to the fifth terminal of the second analog switch and the collector of the first switching transistor and connected to the first voltage regulator through the sixth resistor, the emitter of the first switching transistor is grounded, and the sixth terminals of the second analog switch and the sixth terminals of the third analog switch are both connected to the IO2 terminal of the first controller and the base of the first switching transistor.

4. The intelligent seat electrical status safety detection and control device according to claim 3, characterized in that, The voltage sampling module includes a second resistor, a third resistor, a fourth resistor, a fifth resistor, and a second detection interface; the detection switching module also includes a first analog switch. One end of the third resistor is connected to the third terminal of the first analog switch and then to the first output terminal of the first H-bridge device via the second resistor. The other end of the third resistor is connected to the second output terminal of the first H-bridge device. The fifth terminal of the first analog switch is connected to the collector of the first switching transistor. The eighth terminal of the first analog switch is connected to one end of the first resistor and then to the first terminal of the second detection interface via the fourth resistor. The other end of the fifth resistor is connected to the second terminal of the second detection interface. The sixth terminal of the first analog switch is connected to the IO2 terminal of the first controller.

5. The intelligent seat electrical state safety detection and control device according to claim 4, characterized in that, The signal processing module includes a first operational amplifier, a second operational amplifier, a seventh resistor, an eighth resistor, and a ninth resistor; The non-inverting input of the first operational amplifier is connected to the fourth and ninth terminals of the first analog switch. The output and inverting inputs of the first operational amplifier are both connected to the IO3 terminal of the first controller. The non-inverting input of the second operational amplifier is connected to the fourth and ninth terminals of the second analog switch through the seventh resistor. The inverting input of the second operational amplifier is connected to one end of the ninth resistor and connected to the fourth and ninth terminals of the third analog switch through the eighth resistor. The output of the second operational amplifier is connected to the other end of the ninth resistor.

6. The intelligent seat electrical state safety detection and control device according to claim 7, characterized in that, The signal processing module further includes a second voltage regulator, a tenth resistor, an eleventh resistor, a twelfth resistor, a thirteenth resistor, a third operational amplifier, a fourteenth resistor, a first optocoupler, and a fifteenth resistor; The inverting input of the third operational amplifier is connected to one end of the thirteenth resistor and then connected to the second voltage regulator and one end of the fifteenth resistor through the twelfth resistor. The other end of the fifteenth resistor is connected to the third end of the first optocoupler and the IO4 terminal of the first controller. The non-inverting input of the third operational amplifier is connected to the first end of the tenth resistor and then connected to the output terminal of the third operational amplifier and one end of the fourteenth resistor through the eleventh resistor. The other end of the fourteenth resistor is connected to the first end of the first optocoupler. The second end of the first optocoupler and the other end of the thirteenth resistor are both grounded. The fourth end of the first optocoupler is grounded.

7. The intelligent seat electrical state safety detection and control device according to claim 6, characterized in that, The signal processing module also includes a sixteenth resistor, a seventeenth resistor, an eighteenth resistor, a nineteenth resistor, a third capacitor, a second capacitor, and a fourth operational amplifier; The non-inverting input of the fourth operational amplifier is connected to one end of the second capacitor and is connected to one end of the sixteenth resistor and one end of the third capacitor through the seventeenth resistor. The other end of the third capacitor is connected to the output terminal of the fourth operational amplifier and is connected to the inverting input of the fourth operational amplifier and one end of the eighteenth resistor through the nineteenth resistor. The other end of the eighteenth resistor and the other end of the second capacitor are both grounded. The other end of the sixteenth resistor is connected to the output terminal of the second operational amplifier.

8. The intelligent seat electrical state safety detection and control device according to claim 7, characterized in that, The signal processing module also includes a fourth capacitor, a twentieth resistor, a twenty-first resistor, a fifth operational amplifier, and a twenty-second resistor; The non-inverting input of the fifth operational amplifier is connected to one end of the twenty-first resistor and connected to the output of the fourth operational amplifier through the fourth capacitor. The inverting input of the fifth operational amplifier is connected to one end of the twentieth resistor and connected to the output of the fifth operational amplifier and the second end of the tenth resistor through the twenty-second resistor. The other ends of the twentieth and the twenty-first resistors are both grounded.

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