High-performance seat ventilation multi-gear control circuit and controller thereof

Abstract

The invention relates to the technical field of seat ventilation, and discloses a high-performance seat ventilation multi-gear control circuit and a controller thereof, the control circuit comprises a first operational amplifier, a second operational amplifier, a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a sixth resistor and a ninth resistor; the rotating speed of the ventilation motor can be dynamically adjusted based on the temperature difference signal of the set temperature and the actual temperature of the surface of the seat, the situation that local muscles of a user feel uncomfortable due to the fact that the number of revolutions of the ventilation motor is always the highest is prevented, the temperature difference signal can be compensated when the surface temperature of the seat is in a high-temperature state, and user experience is improved. Damage to a user caused by over-temperature of the surface of the seat is prevented, and real-time warning can be performed on the mode and state of the ventilation motor.

Description

Technical Field

[0001] The present invention relates to the technical field of seat ventilation, and in particular to a high-performance seat ventilation multi-speed control circuit and a controller thereof. Background Art

[0002] When consumers buy a car, comfort is undoubtedly an important consideration. The seat ventilation function can effectively reduce the surface temperature of the seat, providing a dry and comfortable riding and driving environment for the driver and passengers, and also helps prevent skin diseases and the spread of bacteria. However, in order to quickly cool down, when the seat ventilation is turned on, the ventilation motor will run at the maximum speed. Although the ventilation effect is improved, the back and sides of the waist of the passengers or drivers will feel continuous and fast-flowing wind under high-efficiency ventilation for a long time, causing local muscle discomfort. Therefore, a high-performance seat ventilation multi-speed control circuit and its controller are proposed, which can dynamically adjust the speed of the ventilation motor based on the temperature difference signal between the set temperature and the actual temperature of the seat surface, to prevent the speed of the ventilation motor from always being at the highest speed, causing local muscle discomfort of the user, and can compensate for the temperature difference signal when the seat surface temperature is at a high temperature, to prevent the seat surface from overheating and causing harm to the user. Summary of the invention

[0003] In view of the above technical problems, the object of the present invention is to provide a high-performance seat ventilation multi-speed control circuit, the control circuit comprising a first operational amplifier U1, a second operational amplifier U2, a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a fifth resistor R5, a sixth resistor R6, and a ninth resistor R9; The in-phase end of the first operational amplifier U1 is connected to the IN-1 end, the inverting end of the first operational amplifier U1 is connected to one end of the ninth resistor R9, the output end of the first operational amplifier U1 is connected to one end of the third resistor R3 and the other end of the ninth resistor R9, the in-phase end of the second operational amplifier U2 is connected to the other end of the third resistor R3 and one end of the fourth resistor R4, the inverting end of the second operational amplifier U2 is connected to one end of the fifth resistor R5 and one end of the sixth resistor R6, the output end of the second operational amplifier U2 is connected to the other end of the fifth resistor R5, one end of the first resistor R1 is connected to the power supply, the other end of the first resistor R1 is connected to one end of the second resistor R2 and the other end of the sixth resistor R6, and the other end of the second resistor R2 and the other end of the fourth resistor R4 are connected to the ground.

[0004] Furthermore, the control circuit further includes a fifth operational amplifier U5, a second field effect transistor Q2, a seventeenth resistor R17, an eighteenth resistor R18, a twentieth resistor R20, and a twenty-first resistor R21; The non-inverting end of the fifth operational amplifier U5 is connected to one end of the twentieth resistor R20 and one end of the twenty-first resistor R21, the inverting end of the fifth operational amplifier U5 is connected to the IN-1 end, the output end of the fifth operational amplifier U5 is connected to the gate of the second field effect transistor Q2, the drain of the second field effect transistor Q2 is connected to one end of the seventeenth resistor R17 and one end of the eighteenth resistor R18, the other end of the seventeenth resistor R17 and the other end of the twenty-first resistor R21 are connected to the power supply, and the other end of the eighteenth resistor R18, the other end of the twentieth resistor R20, the source of the second field effect transistor Q2 are connected to the ground end.

[0005] Further, the control circuit also includes a fourth operational amplifier U4, a second diode D2, a twelfth resistor R12, a thirteenth resistor R13, a fourteenth resistor R14, a fifteenth resistor R15, and a sixteenth resistor R16; The in-phase end of the fourth operational amplifier U4 is connected to one end of the fifteenth resistor R15 and one end of the sixteenth resistor R16, the inverting end of the fourth operational amplifier U4 is connected to one end of the thirteenth resistor R13 and one end of the fourteenth resistor R14, the output end of the fourth operational amplifier U4 is connected to the anode of the second diode D2 and the other end of the thirteenth resistor R13, the cathode of the second diode D2, one end of the twelfth resistor R12 and the OUT-1 end are connected, the other end of the fifteenth resistor R15 is connected to the output end of the second operational amplifier U2, the other end of the sixteenth resistor R16 is connected to one end of the eighteenth resistor R18, and the other end of the fourteenth resistor R14 is connected to the ground end.

[0006] Furthermore, the control circuit further includes a third operational amplifier U3, a first field effect transistor Q1, a first diode D1, a tenth resistor R10, and an eleventh resistor R11; The non-inverting end of the third operational amplifier U3 is connected to the output end of the first operational amplifier U1, the inverting end of the third operational amplifier U3 is connected to one end of the second resistor R2, the output end of the third operational amplifier U3 is connected to the gate of the first field effect transistor Q1, the source of the first field effect transistor Q1 is connected to one end of the tenth resistor R10 and one end of the eleventh resistor R11, the drain of the first field effect transistor Q1 is connected to the anode of the first diode D1, the anode of the first diode D1 is connected to the OUT-1 end, the other end of the tenth resistor R10 is connected to the power supply, and the other end of the eleventh resistor R11 is connected to the ground end.

[0007] Furthermore, the control circuit further includes a third triode Q3, a fourth diode D4, a sixth light emitting diode D6, a twenty-second resistor R22, and a twenty-third resistor R23; The base of the third triode Q3 is connected to the cathode of the fourth diode D4 and one end of the twenty-second resistor R22, the collector of the third triode Q3 is connected to the anode of the sixth light-emitting diode D6, the emitter of the third triode Q3 is connected to one end of the twenty-third resistor R23, the anode of the fourth diode D4 is connected to the output end of the fifth operational amplifier U5, the other end of the twenty-third resistor R23 is connected to the power supply, and the other end of the twenty-second resistor R22, the cathode of the sixth light-emitting diode D6 and the ground are connected.

[0008] Furthermore, the control circuit further includes a fifth light emitting diode D5, a nineteenth resistor R19, and a twenty-fifth resistor R25; One end of the 25th resistor R25 is connected to one end of the 19th resistor R19, the other end of the 25th resistor R25 is connected to the anode of the fifth light-emitting diode D5, the other end of the 19th resistor R19 is connected to the output end of the fifth operational amplifier U5, and the cathode of the fifth light-emitting diode D5 is connected to the ground end.

[0009] Furthermore, the control circuit also includes a fourth field effect transistor Q4, a third light emitting diode D3, and a twenty-fourth resistor R24; The source of the fourth field effect transistor Q4 is connected to one end of the nineteenth resistor R19, the drain of the fourth field effect transistor Q4 is connected to the anode of the third light-emitting diode D3, the gate of the fourth field effect transistor Q4 is connected to the gate of the first field effect transistor Q1 and one end of the twenty-fourth resistor R24, and the other end of the twenty-fourth resistor R24, the cathode of the third light-emitting diode D3 and the ground end are connected.

[0010] Furthermore, the second resistor R2 is an adjustable resistor.

[0011] Furthermore, the eighteenth resistor R18 is an adjustable resistor.

[0012] Furthermore, a high-performance seat ventilation multi-speed controller is provided, wherein the controller includes the above-mentioned control circuit.

[0013] The beneficial effects of the present invention compared with the prior art are: The present invention can dynamically adjust the rotation speed of the ventilation motor based on the temperature difference signal between the set temperature and the actual temperature of the seat surface, to prevent the ventilation motor from always being at the highest speed, causing discomfort to the user's local muscles. It can compensate for the temperature difference signal when the seat surface temperature is at a high temperature, to prevent the seat surface from overheating and causing harm to the user, and can provide real-time warning for the ventilation motor mode and status. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the prior art and the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0015] Figure 1 The circuit structure diagram provided by the present invention. DETAILED DESCRIPTION

[0016] In order to make the objects and advantages of the present invention more clearly understood, the present invention is specifically described below in conjunction with embodiments. It should be understood that the following text is only used to describe one or several specific implementations of the present invention, and does not strictly limit the scope of protection specifically requested by the present invention.

[0017] The present invention discloses a high-performance seat ventilation multi-speed control circuit, the control circuit comprising a first operational amplifier U1, a second operational amplifier U2, a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a fifth resistor R5, a sixth resistor R6, and a ninth resistor R9; The in-phase end of the first operational amplifier U1 is connected to the IN-1 end, the inverting end of the first operational amplifier U1 is connected to one end of the ninth resistor R9, the output end of the first operational amplifier U1 is connected to one end of the third resistor R3 and the other end of the ninth resistor R9, the in-phase end of the second operational amplifier U2 is connected to the other end of the third resistor R3 and one end of the fourth resistor R4, the inverting end of the second operational amplifier U2 is connected to one end of the fifth resistor R5 and one end of the sixth resistor R6, the output end of the second operational amplifier U2 is connected to the other end of the fifth resistor R5, one end of the first resistor R1 is connected to the power supply, the other end of the first resistor R1 is connected to one end of the second resistor R2 and the other end of the sixth resistor R6, and the other end of the second resistor R2 and the other end of the fourth resistor R4 are connected to the ground.

[0018] Specifically, the control circuit further includes a fifth operational amplifier U5, a second field effect transistor Q2, a seventeenth resistor R17, an eighteenth resistor R18, a twentieth resistor R20, and a twenty-first resistor R21; The non-inverting end of the fifth operational amplifier U5 is connected to one end of the twentieth resistor R20 and one end of the twenty-first resistor R21, the inverting end of the fifth operational amplifier U5 is connected to the IN-1 end, the output end of the fifth operational amplifier U5 is connected to the gate of the second field effect transistor Q2, the drain of the second field effect transistor Q2 is connected to one end of the seventeenth resistor R17 and one end of the eighteenth resistor R18, the other end of the seventeenth resistor R17 and the other end of the twenty-first resistor R21 are connected to the power supply, and the other end of the eighteenth resistor R18, the other end of the twentieth resistor R20, the source of the second field effect transistor Q2 are connected to the ground end.

[0019] Specifically, the control circuit further includes a fourth operational amplifier U4, a second diode D2, a twelfth resistor R12, a thirteenth resistor R13, a fourteenth resistor R14, a fifteenth resistor R15, and a sixteenth resistor R16; The in-phase end of the fourth operational amplifier U4 is connected to one end of the fifteenth resistor R15 and one end of the sixteenth resistor R16, the inverting end of the fourth operational amplifier U4 is connected to one end of the thirteenth resistor R13 and one end of the fourteenth resistor R14, the output end of the fourth operational amplifier U4 is connected to the anode of the second diode D2 and the other end of the thirteenth resistor R13, the cathode of the second diode D2, one end of the twelfth resistor R12 and the OUT-1 end are connected, the other end of the fifteenth resistor R15 is connected to the output end of the second operational amplifier U2, the other end of the sixteenth resistor R16 is connected to one end of the eighteenth resistor R18, and the other end of the fourteenth resistor R14 is connected to the ground end.

[0020] Specifically, the control circuit further includes a third operational amplifier U3, a first field effect transistor Q1, a first diode D1, a tenth resistor R10, and an eleventh resistor R11; The non-inverting end of the third operational amplifier U3 is connected to the output end of the first operational amplifier U1, the inverting end of the third operational amplifier U3 is connected to one end of the second resistor R2, the output end of the third operational amplifier U3 is connected to the gate of the first field effect transistor Q1, the source of the first field effect transistor Q1 is connected to one end of the tenth resistor R10 and one end of the eleventh resistor R11, the drain of the first field effect transistor Q1 is connected to the anode of the first diode D1, the anode of the first diode D1 is connected to the OUT-1 end, the other end of the tenth resistor R10 is connected to the power supply, and the other end of the eleventh resistor R11 is connected to the ground end.

[0021] Specifically, the control circuit further includes a third triode Q3, a fourth diode D4, a sixth light emitting diode D6, a twenty-second resistor R22, and a twenty-third resistor R23; The base of the third triode Q3 is connected to the cathode of the fourth diode D4 and one end of the twenty-second resistor R22, the collector of the third triode Q3 is connected to the anode of the sixth light-emitting diode D6, the emitter of the third triode Q3 is connected to one end of the twenty-third resistor R23, the anode of the fourth diode D4 is connected to the output end of the fifth operational amplifier U5, the other end of the twenty-third resistor R23 is connected to the power supply, and the other end of the twenty-second resistor R22, the cathode of the sixth light-emitting diode D6 and the ground are connected.

[0022] Specifically, the control circuit further includes a fifth light emitting diode D5, a nineteenth resistor R19, and a twenty-fifth resistor R25; One end of the 25th resistor R25 is connected to one end of the 19th resistor R19, the other end of the 25th resistor R25 is connected to the anode of the fifth light-emitting diode D5, the other end of the 19th resistor R19 is connected to the output end of the fifth operational amplifier U5, and the cathode of the fifth light-emitting diode D5 is connected to the ground end.

[0023] Specifically, the control circuit further includes a fourth field effect transistor Q4, a third light emitting diode D3, and a twenty-fourth resistor R24; The source of the fourth field effect transistor Q4 is connected to one end of the nineteenth resistor R19, the drain of the fourth field effect transistor Q4 is connected to the anode of the third light-emitting diode D3, the gate of the fourth field effect transistor Q4 is connected to the gate of the first field effect transistor Q1 and one end of the twenty-fourth resistor R24, and the other end of the twenty-fourth resistor R24, the cathode of the third light-emitting diode D3 and the ground end are connected.

[0024] Specifically, the second resistor R2 is an adjustable resistor.

[0025] Specifically, the eighteenth resistor R18 is an adjustable resistor.

[0026] Specifically, a high-performance seat ventilation multi-speed controller includes the above-mentioned control circuit.

[0027] The specific working principle of the present invention is as follows: IN-1 is used to receive the real-time temperature signal of the seat surface, and the signal is fed back to the non-inverting terminal of the first operational amplifier U1. The output terminal of the first operational amplifier U1 is connected to the negative feedback terminal of the first operational amplifier U1 through the ninth resistor R9 and the inverting terminal of the first operational amplifier U1 so that the first operational amplifier U1 follows the output of the real-time temperature signal of the seat surface while preventing interference from the lower circuit. The power supply signal passes through the first resistor R1 and the second resistor R2 to the ground terminal. The signal at the second resistor R2 is the user's required temperature signal for the seat. The signal amplitude can be adjusted by changing the resistance value of the second resistor R2. The signal at the output terminal of the first operational amplifier U1 passes through the third resistor R3 and the fourth resistor R4 to the ground terminal. The signal at the fourth resistor R4 is fed back to the non-inverting terminal of the second operational amplifier U2. The output terminal of the second operational amplifier U2 is connected to the negative feedback terminal of the second operational amplifier U2 through the fifth resistor R5 and the inverting terminal of the second operational amplifier U2. The signal at the second resistor R2 is fed back to the inverting terminal of the second operational amplifier U2 through the sixth resistor R6. The signal amplitude at the output terminal of the second operational amplifier U2 is the temperature difference signal between the seat surface temperature signal and the seat required temperature signal. The power supply signal passes through the seventeenth resistor R17 and the fourth resistor R4. The eighteenth resistor R18 is connected to the ground terminal, and the signal at the end of the eighteenth resistor R18 is the basic signal for compensating the ventilation motor speed when the seat surface temperature is high. The signal amplitude can be adjusted by changing the resistance value of the eighteenth resistor R18. The power supply signal is connected to the ground terminal through the twenty-first resistor R21 and the twentieth resistor R20. The signal amplitude at the end of the twentieth resistor R20 is the high-temperature reference signal of the seat surface. The signal amplitude can be adjusted by changing the resistance value of the twentieth resistor R20. The signal at the end of the twentieth resistor R20 is fed back to the in-phase terminal of the fifth operational amplifier U5. At the same time, the real-time temperature of the seat surface is The temperature signal is synchronously fed back to the inverting terminal of the fifth operational amplifier U5. When the seat surface temperature is higher than the high temperature reference signal, the fifth operational amplifier U5 is cut off, and the output terminal signal of the fifth operational amplifier U5 is fed back to the gate of the second field effect tube Q2. When the seat surface temperature is lower than the high temperature reference signal, the voltage difference between the gate of the second field effect tube Q2 and the source of the second field effect tube Q2 is higher than the conduction threshold, the second field effect tube Q2 is turned on, and the signal at the end of the eighteenth resistor R18 is connected to the ground terminal through the drain of the second field effect tube Q2 and the source of the second field effect tube Q2. The potential of the eighteenth resistor R18 is set to zero. The signal at the end of the eighteenth resistor R18 is fed back to the in-phase end of the fourth operational amplifier U4 through the sixteenth resistor R16, the signal at the output end of the fourth operational amplifier U4 is fed back to the ground end through the thirteenth resistor R13 and the fourteenth resistor R14, the signal at the end of the fourteenth resistor R14 is fed back to the inverting end of the fourth operational amplifier U4, and at the same time, the signal at the output end of the second operational amplifier U2 is fed back to the in-phase end of the fourth operational amplifier U4 through the fifteenth resistor R15, so that the fourth operational amplifier U4 can output a compensation signal based on the temperature difference signal and the basic signal, the signal at the output end of the fourth operational amplifier U4 is fed back to the ground end through the second diode D2 and the twelfth resistor R12, the signal at the end of the twelfth resistor R12 is fed back to the ventilation motor through OUT-1, the higher the amplitude of the signal at the end of the twelfth resistor R12, the higher the motor speed, so that when the seat surface temperature is lower than the high temperature reference signal, the temperature difference signal is fed back to the ventilation motor, so that the ventilation motor can dynamically adjust the number of revolutions of the ventilation motor based on the temperature difference, and when the seat surface temperature is higher than the high temperature reference signal, the temperature difference signal is compensated, so that the ventilation motor increases the number of revolutions to prevent the seat surface The over-temperature of the seat surface causes harm to the user. The power supply signal is fed to the ground terminal through the tenth resistor R10 and the eleventh resistor R11. The signal at the end of the eleventh resistor R11 is the constant temperature speed signal of the ventilation motor to maintain the constant temperature of the seat surface. The amplitude of the signal can be adjusted by changing the resistance value of the eleventh resistor R11. The signal at the second resistor R2 is fed back to the inverting end of the third operational amplifier U3. The signal at the output end of the first operational amplifier U1 is fed back to the non-inverting end of the third operational amplifier U3. When the seat surface temperature is at the user's required temperature for the seat, the third operational amplifier U3 is cut off. The signal at the output end of the third operational amplifier U3 is fed back to the gate of the first field effect transistor Q1. The voltage difference between the gate of the first field effect transistor Q1 and the source of the first field effect transistor Q1 is lower than the conduction threshold, and the first field effect transistor Q1 is turned on. The signal at the end of the eleventh resistor R11 is fed back to the ventilation motor through OUT-1 after the first diode D1. When the ventilation motor obtains the signal, its speed is a constant speed for maintaining a constant temperature. Therefore, when the seat surface temperature is at the required temperature, the speed of the ventilation motor can be at the constant speed required to maintain a constant temperature.

[0028] When the seat surface temperature is lower than the high temperature reference signal and higher than the required temperature signal, the output signal of the fifth operational amplifier U5 is transmitted through the nineteenth resistor R19, the twenty-fifth resistor R25, and the fifth light-emitting diode D5 to the ground terminal, and the fifth light-emitting diode D5 is turned on. The conduction of the fifth light-emitting diode D5 represents the state signal of the temperature difference control in the dynamic adjustment mode of the ventilation motor. At the same time, the output signal of the fifth operational amplifier U5 is transmitted through the fourth diode D4 and the twenty-second resistor R22 to the ground terminal. When the seat surface temperature is higher than the high temperature reference signal, the fifth operational amplifier U5 is cut off, and the power signal is transmitted through the twenty-third resistor R23, the emitter of the third transistor Q3, the base of the third transistor Q3, and the twenty-second resistor R22 to the ground terminal. The emitter of the third transistor Q3 and the base of the third transistor Q3 are forward biased, and the third transistor Q3 is turned on. The power signal is transmitted through the twenty-third resistor R23, the emitter of the third transistor Q3, the collector of the third transistor Q3, and the sixth light-emitting diode D6 to the ground terminal. , the sixth light-emitting diode D6 is turned on, and the conduction of the sixth light-emitting diode D6 is a state signal of compensation control in the dynamic adjustment mode of the ventilation motor. The output signal of the third operational amplifier U3 is synchronously fed back to the gate of the fourth field effect tube Q4. The twenty-fourth resistor R24 ​​is used to discharge the parasitic capacitance of the gate of the first field effect tube Q1 and the gate of the fourth field effect tube Q4. When the surface temperature of the seat is at the temperature required by the user for the seat, the third operational amplifier U3 is cut off, and the voltage difference between the gate of the fourth field effect tube Q4 and the source of the fourth field effect tube Q4 is lower than the conduction threshold, and the fourth field effect tube Q4 is turned on. The output signal of the fifth operational amplifier U5 is connected to the ground terminal through the nineteenth resistor R19, the source of the fourth field effect tube Q4, the drain of the fourth field effect tube Q4, and the third light-emitting diode D3. The twenty-fifth resistor R25 limits the current to cut off the fifth light-emitting diode D5, and the third light-emitting diode D3 is turned on. The conduction of the third light-emitting diode D3 is a state signal of the ventilation motor turning to a constant speed in the non-dynamic adjustment mode.

[0029] It will be apparent to those skilled in the art that the 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 the spirit or essential features of the invention. 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, and it is intended that all variations within the meaning and scope of the equivalent elements of the claims be included in the invention. Any marking in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A high-performance seat ventilation multi-speed control circuit, characterized in that: The control circuit includes a first operational amplifier, a second operational amplifier, a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a sixth resistor, and a ninth resistor; The first operational amplifier has a common-phase terminal connected to the IN-1 terminal, an inverting terminal connected to one end of the ninth resistor, an output terminal connected to one end of the third resistor and another end of the ninth resistor, a common-phase terminal connected to the second operational amplifier and another end of the third resistor and one end of the fourth resistor, an inverting terminal connected to one end of the fifth resistor and one end of the sixth resistor, an output terminal connected to the other end of the fifth resistor, one end of the first resistor and a power supply, another end of the first resistor and one end of the second resistor and another end of the sixth resistor, and another end of the second resistor and another end of the fourth resistor and a ground terminal.

2. The high-performance seat ventilation multi-speed control circuit according to claim 1 is characterized in that: The control circuit further includes a fifth operational amplifier, a second field effect transistor, a seventeenth resistor, an eighteenth resistor, a twentieth resistor, and a twenty-first resistor; The non-inverting end of the fifth operational amplifier is connected to one end of the twentieth resistor and one end of the twenty-first resistor, the inverting end of the fifth operational amplifier is connected to the IN-1 end, the output end of the fifth operational amplifier is connected to the gate of the second field effect transistor, the drain of the second field effect transistor is connected to one end of the seventeenth resistor and one end of the eighteenth resistor, the other end of the seventeenth resistor and the other end of the twenty-first resistor are connected to the power supply, and the other end of the eighteenth resistor, the other end of the twentieth resistor, the source of the second field effect transistor and the ground are connected.

3. The high performance seat ventilation multi-speed control circuit according to claim 2 is characterized in that: The control circuit further includes a fourth operational amplifier, a second diode, a twelfth resistor, a thirteenth resistor, a fourteenth resistor, a fifteenth resistor, and a sixteenth resistor; The in-phase end of the fourth operational amplifier is connected to one end of the fifteenth resistor and one end of the sixteenth resistor, the inverting end of the fourth operational amplifier is connected to one end of the thirteenth resistor and one end of the fourteenth resistor, the output end of the fourth operational amplifier is connected to the anode of the second diode and the other end of the thirteenth resistor, the cathode of the second diode, one end of the twelfth resistor and the OUT-1 end are connected, the other end of the fifteenth resistor is connected to the output end of the second operational amplifier, the other end of the sixteenth resistor is connected to one end of the eighteenth resistor, and the other end of the fourteenth resistor is connected to the ground end.

4. The high-performance seat ventilation multi-speed control circuit according to claim 1 is characterized in that: The control circuit further includes a third operational amplifier, a first field effect transistor, a first diode, a tenth resistor, and an eleventh resistor; The third operational amplifier is connected to the output end of the first operational amplifier in phase, the third operational amplifier is connected to the output end of the second resistor in phase, the output end of the third operational amplifier is connected to the gate of the first field effect transistor, the source of the first field effect transistor is connected to one end of the tenth resistor and one end of the eleventh resistor, the drain of the first field effect transistor is connected to the anode of the first diode, the anode of the first diode is connected to the OUT-1 end, the other end of the tenth resistor is connected to the power supply, and the other end of the eleventh resistor is connected to the ground.

5. The high performance seat ventilation multi-speed control circuit according to claim 2, characterized in that: The control circuit also includes a third triode, a fourth diode, a sixth light emitting diode, a twenty-second resistor, and a twenty-third resistor; The base of the third triode is connected to the cathode of the fourth diode and one end of the twenty-second resistor, the collector of the third triode is connected to the anode of the sixth light-emitting diode, the emitter of the third triode is connected to one end of the twenty-third resistor, the anode of the fourth diode is connected to the output end of the fifth operational amplifier, the other end of the twenty-third resistor is connected to the power supply, and the other end of the twenty-second resistor, the cathode of the sixth light-emitting diode and the ground are connected.

6. The high performance seat ventilation multi-speed control circuit according to claim 2, characterized in that: The control circuit also includes a fifth light emitting diode, a nineteenth resistor, and a twenty-fifth resistor; One end of the 25th resistor is connected to one end of the 19th resistor, the other end of the 25th resistor is connected to the anode of the fifth light-emitting diode, the other end of the 19th resistor is connected to the output end of the fifth operational amplifier, and the cathode of the fifth light-emitting diode is connected to the ground end.

7. The high performance seat ventilation multi-speed control circuit according to claim 2, characterized in that: The control circuit also includes a fourth field effect transistor, a third light emitting diode, and a twenty-fourth resistor; The source of the fourth field effect transistor is connected to one end of the nineteenth resistor, the drain of the fourth field effect transistor is connected to the anode of the third light-emitting diode, the gate of the fourth field effect transistor is connected to the gate of the first field effect transistor and one end of the twenty-fourth resistor, and the other end of the twenty-fourth resistor, the cathode of the third light-emitting diode and the ground terminal are connected.

8. The high performance seat ventilation multi-speed control circuit according to claim 1, characterized in that: The second resistor is an adjustable resistor.

9. The high performance seat ventilation multi-speed control circuit according to claim 2, characterized in that: The eighteenth resistor is an adjustable resistor.

10. A high-performance seat ventilation multi-speed controller, characterized in that: The controller comprises a control circuit as described in any one of claims 1-9.

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