An electronic throttle module with throttle opening display and fault diagnosis functions

Abstract

The present invention provides an electronic throttle module with throttle opening display and fault diagnosis functions, and relates to the field of engine test technology. The electronic throttle module with throttle opening display and fault diagnosis functions includes a power supply circuit, a 6-pin aviation plug J1, a DC-DC power supply module P1, a connector J2, a dual-channel instrument amplifier integrated circuit IC1, and a DC voltmeter V1. In the present invention, the module verifies the correctness of the two sets of voltages based on the amplitude and linear relationship between the two voltages of the electronic throttle, displays the throttle opening through a DC voltmeter, displays the fault through the on and off status of two LED fault indicator lights, and judges the cause of the fault accordingly. It also adopts a double-sided copper-clad circuit board to achieve an integrated design, and uses a transparent cover waterproof box to achieve a waterproof function. It is suitable for use in engine test benches to reduce the difficulty of troubleshooting and improve work efficiency. It is suitable for promotion and application in the field of engine test technology and can be directly used to guide the design or production of related products.

Description

Technical Field

[0001] The invention relates to the technical field of engine testing, in particular to an electronic throttle module with throttle opening display and fault diagnosis functions. Background Art

[0002] In an engine test bench, the two electronic throttle voltages output by the test bench need to be connected to the electronic throttle pedal circuit inside the ECU to enable the test bench to control the engine throttle. Usually, a 4-core shielded cable and an adapter are used to connect the test bench and the engine wiring harness, and then input the control voltage into the ECU.

[0003] However, sometimes during engine testing, throttle failure may occur, requiring experienced operators to use tools such as a multimeter to gradually measure and check the throttle-related circuits and the correctness of the two voltages. Troubleshooting is time-consuming and labor-intensive. Sometimes, we also need to abandon the electronic throttle control of the test bench and control the engine in real time through a manual electronic throttle simulator to test some transient operating conditions.

[0004] Therefore, inventing an electronic throttle terminal module for an engine test bench with throttle opening display, fault diagnosis and electronic throttle simulation functions is of great practical significance for improving work efficiency and convenience.

[0005] In summary, those skilled in the art have provided an electronic throttle module with throttle opening display and fault diagnosis functions to solve the problems raised in the above background technology. Summary of the Invention

[0006] (1) Technical problems solved

[0007] In response to the deficiencies in the prior art, the present invention provides an electronic throttle module with throttle opening display and fault diagnosis functions, which realizes that the same circuit board takes into account both the functions of an electronic throttle terminal module and a manual electronic throttle simulator, and has throttle opening display and fault diagnosis functions, can accurately and directly display faults and determine the causes of the faults, realizes an integrated design and has a waterproof function, solves the problem of time-consuming and labor-intensive troubleshooting of electronic throttle faults in engine test benches, and thus improves work efficiency.

[0008] (2) Technical solution

[0009] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0010] An electronic throttle module with throttle opening display and fault diagnosis functions includes a power supply circuit, a 6-pin aviation plug J1, a DC-DC power supply module P1, a connector J2, a dual-channel instrument amplifier integrated circuit IC1, a DC voltmeter V1, a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a resistor R6, a resistor R7, a resistor R8, a resistor R9, a resistor R10, a resistor R11, a resistor R12, a resistor R13, a resistor R14, a resistor R15, a resistor R16, a resistor R17, a resistor R18, a resistor R19, a resistor R20, a potentiometer R21, and a potentiometer R22. The +5V power supply required by the power supply circuit is provided by the ECU and input from pins 1 and 2 of the 6-pin aviation plug J1. Pin 1 of the 6-pin aviation plug J1 is connected to the anode of a diode D1, and pin 2 of the 6-pin aviation plug J1 is connected to the anode of a diode D2. The cathodes of the diodes D1 and D2 are connected together and to a +5V power supply network.

[0011] The Vin pin of the DC-DC power module P1 is connected to a +5V power supply and one end of a capacitor C9. The other end of the capacitor C9 is connected to the GND pin of the DC-DC power module P1 and to the ground network GND. The 0V pin of the DC-DC power module P1 is connected to one end of a capacitor C10 and to the -5V power network. The other end of the capacitor C10 is connected to the +Vo pin of the DC-DC power module P1 and to the GND ground network.

[0012] One end of the resistor R1 is connected to the +5V power supply network, and the other end is connected to the in+ pin of the three-terminal voltage regulator P2 and to one end of the capacitor C7. The other end of the capacitor C7 and the in- pin of the three-terminal voltage regulator P2 are connected to the GND ground network. The out+ pin of the three-terminal voltage regulator P2 is connected to one end of the capacitor C6 and one end of the variable resistor R2. The other end of the variable resistor R2 is connected to one end of the resistor R3 and to the non-inverting input of IC2C. The other end of the resistor R3 and the other end of C6 are connected to the GND ground network. The inverting input of IC2C is connected to the output of IC2C and is connected to the Ud network and one end of the resistor R4. The other end of R4 is connected to the GND ground network.

[0013] One end of the resistor R14 is connected to the +5V power supply network, the other end of the resistor R14 is connected to one end of the fixed end of the potentiometer R21, the other end of the fixed end of the potentiometer R21 is connected to one end of the resistor R15, the other end of the resistor R15 is connected to the GND ground network, the sliding end of the potentiometer R21 is connected to one end of the capacitor C5 and the non-inverting input end of IC2A, the other end of the capacitor C5 is connected to the GND ground network, the inverting input end of IC2A is connected to the output end of IC2A and to one end of the resistor R16, the other end of the resistor R16 is connected to the U2 network, one end of the resistor R17 and the non-inverting input end of IC2B, and the other end of the resistor R17 is connected to the GND ground network;

[0014] Pin 8 VSS of the dual-channel instrumentation amplifier integrated circuit IC1 is connected to a -5V power supply and one end of a capacitor C8, the other end of the capacitor C8 is connected to the GND ground network, the non-inverting input terminal V+inB of channel B of the dual-channel instrumentation amplifier integrated circuit IC1 is connected to the U1 network, and the inverting input terminal V-inB is connected to the U2 network, and pins 13 and 14 of channel B of the dual-channel instrumentation amplifier integrated circuit IC1 are connected to one end of resistors R6 and R7, respectively, and the other ends of resistors R6 and R7 are connected;

[0015] Pin 12 of channel B of the dual-channel instrumentation amplifier integrated circuit IC1 is connected to the GND ground network, pin 11 VoB and pin 10 SenseB of channel B of the dual-channel instrumentation amplifier integrated circuit IC1 are connected and connected to one end of resistor R8, the other end of resistor R8 is connected to one end of resistor R9 and the non-inverting input end of IC2D, the other end of resistor R9 is connected to the GND ground network, and is also connected to the cathode of light-emitting diode D3 and the anode of light-emitting diode D4, and the anode of light-emitting diode D3 and the cathode of light-emitting diode D4 are connected to the GND ground network.

[0016] Furthermore, pins 3 and 5 of the 6-pin aviation plug J1 are connected to the GND ground network, pin 4 of the 6-pin aviation plug J1 is connected to the U1 network, one end of the resistor R5 and one end of the capacitor C2, the other end of the capacitor C2 is connected to the GND ground network, and the other end of the resistor R5 is connected to the 2U2 network.

[0017] Furthermore, pin 6 of the 6-pin aviation plug J1 is connected to the U2 network and one end of the capacitor C11, and the other end of the capacitor C11 is connected to the GND ground network.

[0018] Furthermore, one end of the resistor R18 is connected to the inverting input terminal of IC2B and one end of the resistor R19, the other end of the resistor R19 is connected to the output terminal of IC2B, one end of the resistor R20 and the 2U2 network, and the other end of the resistor R19 and the other end of the resistor R20 are connected to the GND grounding network.

[0019] Furthermore, pin 1 of the connector J2 is connected to the U1 network, pin 2 is connected to the U2 network, and pins 3 and 4 are connected to the GND ground network.

[0020] Furthermore, the 9th pin VDD of the dual-channel instrumentation amplifier integrated circuit IC1 is connected to a -5V power supply and one end of a capacitor C1 , and the other end of the capacitor C1 is connected to a GND grounding network.

[0021] Furthermore, one end of the resistor R11 is connected to the Ud network, the other end of the resistor R11 is connected to the inverting input end of IC2D and connected to one end of the resistor R10, the other end of the resistor R10 is connected to the output end of IC2D and one end of the fixed end of the potentiometer R22, and the other end of the fixed end of the potentiometer R22 is connected to the GND grounding network.

[0022] Furthermore, the sliding end of the potentiometer R22 is connected to the Vo+ network and connected to pin 1 (voltage input pin) of the DC voltmeter V1, pin 2 of the DC voltmeter V1 is connected to the +5V power supply network, and pin 3 of the DC voltmeter V1 is connected to the GND grounding network.

[0023] (3) Beneficial effects

[0024] The present invention provides an electronic throttle module with throttle opening display and fault diagnosis functions. It has the following beneficial effects:

[0025] 1. The present invention provides an electronic throttle module with throttle opening display and fault diagnosis functions. The module adopts a double-sided copper-clad circuit board to achieve an integrated design. It verifies the voltage of two electronic throttles, displays the throttle opening through a DC voltmeter, and indicates the fault by the on and off status of two LED fault indicator lights, and judges the cause of the fault accordingly. This module can realize throttle opening display, fault diagnosis and sub-throttle simulation functions, and is very suitable for use in engine test benches.

[0026] 2. The present invention provides an electronic throttle module with throttle opening display and fault diagnosis functions. The module is connected to the two sets of electronic throttle voltage outputs of the test bench through the 4-pin connector J2, connected to the electronic throttle pedal connector of the engine wiring harness through the 6-pin aviation plug J1, and then connected to the inside of the ECU to complete the input of working power and the input and output of electronic throttle signals, which can meet the normal operation needs of the module.

[0027] 3. The present invention provides an electronic throttle module with throttle opening display and fault diagnosis functions. The module verifies the correctness of the two sets of voltages of the electronic throttle based on the amplitude and linear relationship between the two voltages, displays the throttle opening through a DC voltmeter, and displays the fault through the on and off status of two LED fault indicator lights, and judges the cause of the fault accordingly. At the same time, the module adopts a double-sided copper-clad circuit board to achieve an integrated design and uses a transparent cover waterproof box to achieve a waterproof function. It is suitable for use in engine test benches to reduce the difficulty of troubleshooting and improve work efficiency. It is suitable for promotion and application in the field of engine test technology and can be directly used to guide the design or production of related products. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 Schematic diagram of the circuit control structure of the present invention. DETAILED DESCRIPTION

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0030] Example 1:

[0031] like Figure 1 As shown, an embodiment of the present invention provides an electronic throttle module with throttle opening display and fault diagnosis functions, which describes the power supply circuit portion of an electronic throttle terminal module for an engine test bench with throttle opening display, fault diagnosis and electronic throttle simulation functions. The +5V power required by the power supply circuit is provided by the ECU and input from pins 1 and 2 of the 6-pin aviation plug J1. Pin 1 of the 6-pin aviation plug J1 is connected to the anode of diode D1, and pin 2 of the 6-pin aviation plug J1 is connected to the anode of diode D2. The cathodes of diodes D1 and D2 are connected together and connected to the +5V power supply network.

[0032] The Vin pin of the DC-DC power module P1 is connected to a +5V power supply and one end of a capacitor C9. The other end of the capacitor C9 is connected to the GND pin of the DC-DC power module P1 and to the ground network GND. The 0V pin of the DC-DC power module P1 is connected to one end of a capacitor C10 and to the -5V power network. The other end of the capacitor C10 is connected to the +Vo pin of the DC-DC power module P1 and to the GND ground network.

[0033] One end of resistor R1 is connected to the +5V power supply network, and the other end is connected to the in+ pin of the three-terminal voltage regulator P2 and connected to one end of the capacitor C7. The other end of capacitor C7 and the in- pin of the three-terminal voltage regulator P2 are connected to the GND ground network. The out+ pin of the three-terminal voltage regulator P2 is connected to one end of the capacitor C6 and one end of the variable resistor R2. The other end of the variable resistor R2 is connected to one end of the resistor R3 and connected to the non-inverting input of IC2C. The other end of the resistor R3 and the other end of C6 are connected to the GND ground network. The inverting input of IC2C is connected to the output of IC2C and connected to the Ud network and one end of the resistor R4. The other end of R4 is connected to the GND ground network.

[0034] Example 2:

[0035] like Figure 1 As shown, an embodiment of the present invention provides an electronic throttle module with throttle opening display and fault diagnosis functions, which further illustrates other circuit implementation methods of an electronic throttle terminal module for an engine test bench with throttle opening display, fault diagnosis and electronic throttle simulation functions. Pins 3 and 5 of the 6-pin aviation plug J1 are connected to the GND grounding network, pin 4 of the 6-pin aviation plug J1 is connected to the U1 network, one end of the resistor R5 and one end of the capacitor C2, the other end of the capacitor C2 is connected to the GND grounding network, the other end of the resistor R5 is connected to the 2U2 network, pin 6 of the 6-pin aviation plug J1 is connected to the U2 network and one end of the capacitor C11, the other end of the capacitor C11 is connected to the GND grounding network, pin 1 of the connector J2 is connected to the U1 network, pin 2 is connected to the U2 network, and pins 3 and 4 are connected to the GND grounding network;

[0036] One end of resistor R14 is connected to the +5V power supply network, the other end of resistor R14 is connected to one end of the fixed end of potentiometer R21, the other end of the fixed end of potentiometer R21 is connected to one end of resistor R15, the other end of resistor R15 is connected to the GND ground network, the sliding end of potentiometer R21 is connected to one end of capacitor C5 and the non-inverting input of IC2A, the other end of capacitor C5 is connected to the GND ground network, the inverting input of IC2A is connected to the output of IC2A and to one end of resistor R16, the other end of resistor R16 is connected to the U2 network, one end of resistor R17 and the non-inverting input of IC2B, and the other end of resistor R17 is connected to the GND ground network;

[0037] One end of resistor R18 is connected to the inverting input of IC2B and one end of resistor R19. The other end of resistor R19 is connected to the output of IC2B, one end of resistor R20, and the 2U2 network. The other end of resistor R19 and the other end of resistor R20 are connected to the GND ground network.

[0038] Pin 8 VSS of the dual-channel instrumentation amplifier integrated circuit IC1 is connected to a -5V power supply and one end of capacitor C8. The other end of capacitor C8 is connected to the GND ground network. The non-inverting input terminal V+inB of channel B of the dual-channel instrumentation amplifier integrated circuit IC1 is connected to the U1 network, and the inverting input terminal V-inB is connected to the U2 network. Pins 13 and 14 of channel B of the dual-channel instrumentation amplifier integrated circuit IC1 are connected to one end of resistors R6 and R7, respectively, and the other ends of resistors R6 and R7 are connected.

[0039] Pin 12 of channel B of the dual-channel instrumentation amplifier integrated circuit IC1 is connected to the GND ground network. Pin 11 VoB and pin 10 SenseB of channel B of the dual-channel instrumentation amplifier integrated circuit IC1 are connected and connected to one end of resistor R8. The other end of resistor R8 is connected to one end of resistor R9 and the non-inverting input terminal of IC2D. The other end of resistor R9 is connected to the GND ground network and is also connected to the cathode of light-emitting diode D3 and the anode of light-emitting diode D4. The anode of light-emitting diode D3 and the cathode of light-emitting diode D4 are connected to the GND ground network. Pin 9 VDD of the dual-channel instrumentation amplifier integrated circuit IC1 is connected to a -5V power supply and one end of capacitor C1. The other end of capacitor C1 is connected to the GND ground network.

[0040] One end of resistor R11 is connected to the Ud network, the other end of resistor R11 is connected to the inverting input of IC2D and to one end of resistor R10, the other end of resistor R10 is connected to the output of IC2D and one end of the fixed end of potentiometer R22, the other end of the fixed end of potentiometer R22 is connected to the GND ground network, the sliding end of potentiometer R22 is connected to the Vo+ network and to pin 1 (voltage input pin) of DC voltmeter V1, pin 2 of DC voltmeter V1 is connected to the +5V power supply network, and pin 3 of DC voltmeter V1 is connected to the GND ground network.

[0041] Working Principle: The process of realizing the functions of the electronic throttle terminal module for the engine test bench with throttle opening display, fault diagnosis and electronic throttle simulation includes the following steps:

[0042] S1. Power supply circuit: The +5V power required by the power supply circuit is provided by the ECU. It is input from pins 1 and 2 of the 6-pin aviation plug and connected to the module's internal +5V power supply through two low-voltage-drop Schottky diodes D1 and D2. It is converted to a -5V output by the DC-DC power supply module P1 for use by the module's internal circuits. The function of diodes D1 and D2 is to prevent reverse power connection, which has the function of protecting the module and ECU. At the same time, the +5V power supply is input to the input terminal In+ of the three-terminal voltage regulator IC through resistor R1, and a stable voltage is output from the output terminal Out+. After being divided by variable resistors R2 and R3, it is input to the non-inverting input terminal of IC2C. After being buffered by the voltage follower circuit composed of IC2C, it is output from the output pin of IC2C to obtain the idle voltage Ud.

[0043] S2. When used as an electronic throttle terminal module, remove resistors R16 and R5, and part A of the circuit will not function, realizing the function of the electronic throttle terminal module: the electronic throttle voltage U2 is input from pin 2 of J2 to the non-inverting terminal of the operational amplifier IC2B. After the voltage signal is amplified twice by IC2B, the amplitude is 2U2. 2U2 is output from pin 7 of the operational amplifier IC2B and connected to the non-inverting input terminal V+inA of the A channel of the dual-channel instrumentation amplifier integrated circuit IC1; the electronic throttle voltage U1 is input from pin 1 of J2 to the inverting input terminal V-inA of the A channel of the dual-channel instrumentation amplifier integrated circuit IC. 2U2 and U1 are subtracted and amplified inside the A channel of the voltage instrumentation amplifier. The amplification factor is determined by the value of resistor R12. The amplified voltage signal is output from the A channel output pin VoA and is then amplified through resistor After current limiting, R13 drives two red LED light-emitting tubes to verify the correctness of the two sets of voltages and display the fault function; at the same time, U1 is input to the B-way non-inverting input terminal V+inB of the dual-way instrumentation amplifier integrated circuit IC, and U2 is input to the B-way inverting input terminal V-inB of the dual-way instrumentation amplifier integrated circuit IC. U1 and U2 are subtracted and amplified by 2 times inside the B-way of the voltage instrumentation amplifier. The amplification factor is determined by the values ​​of resistors R6 and R7. The amplified voltage signal is output from the B-way output pin VoB, output to the non-inverting input terminal of IC2D through resistor R8, and subtracted from the idle voltage Ud. The subtraction result is output from the output terminal of IC2D, and the voltage is adjusted by potentiometer R22 and output to the detection voltage input terminal of the DC voltmeter V1. The DC voltmeter displays the throttle opening. The debugging method is as follows: first, connect the two output voltages of the test bench electronic throttle to connector J2, connect the aviation socket of the electronic throttle pedal on the engine wiring harness to the corresponding aviation plug J1 of this module, adjust the test bench electronic throttle opening to 0, adjust the variable resistor R2 so that the DC voltmeter V1 shows the throttle opening as 0, then adjust the test bench electronic throttle opening to 100, adjust the variable resistor R22 so that the DC voltmeter V1 shows the throttle opening as 100, and complete the debugging and put it into use;

[0044] When used as a manual electronic throttle simulator, resistors R16 and R5 need to be connected. Part A of the circuit will function. The manually controlled potentiometer R21 generates a voltage divided by the same range as U2, which is then input to the non-inverting input of IC2A. After being buffered by the voltage follower circuit formed by IC2A, it is output from the output pin of IC2A to obtain voltage U2. The 2U2 voltage output, after being doubled amplified by IC2B, is connected to the U1 network, satisfying the voltage linear relationship of U1 = 2U2. Other circuit operation and height methods are the same as step S2.

[0045] S4. Verification and fault display: When 2U2 is greater than U1 and the difference between the two exceeds the specified limit, the LED D4 lights up, and the DC voltmeter V1 shows that the throttle opening is lower than the opening value displayed on the test bench, and the error exceeds the limit. Based on this, it can be determined that the fault is that the voltage amplitudes of U1 and U2 are out of tolerance; when 2U2 is less than U1 and the difference between the two exceeds the specified limit, the LED D3 lights up, and the DC voltmeter V1 shows that the throttle opening is higher than the opening displayed on the test bench, and the error will exceed the limit. Based on this, it can be determined that the fault is that the voltage amplitudes of U1 and U2 are out of tolerance; when U1 is missing or the voltages of U1 and U2 are connected reversely, the LED D4 lights up, and the DC voltmeter V1 shows that the throttle opening is always 0; when U2 is missing, the LED D3 lights up, and the DC voltmeter V1 shows that the throttle opening is higher than the opening displayed on the test bench, and the error exceeds 20%.

[0046] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. An electronic throttle module with throttle opening display and fault diagnosis function, including a power supply circuit, a 6-pin aviation plug J1, a DC-DC power supply module P1, a connector J2, a dual-channel instrumentation amplifier integrated circuit IC1, a DC voltmeter V1, resistors R1, R2, R3, R4, R5, R6, R7, R8, R9, R10, R11, R12, R13, R14, R15, R16, R17, R18, R19, R20, potentiometers R21 and R22, characterized in that: The +5V power supply required by the power supply circuit is provided by the ECU and is input from pins 1 and 2 of the 6-pin aviation plug J1. Pin 1 of the 6-pin aviation plug J1 is connected to the anode of the diode D1, and pin 2 of the 6-pin aviation plug J1 is connected to the anode of the diode D2. The cathodes of the diodes D1 and D2 are connected together and connected to the +5V power supply network. The Vin pin of the DC-DC power module P1 is connected to a +5V power supply and one end of a capacitor C9. The other end of the capacitor C9 is connected to the GND pin of the DC-DC power module P1 and to the ground network GND. The 0V pin of the DC-DC power module P1 is connected to one end of a capacitor C10 and to the -5V power network. The other end of the capacitor C10 is connected to the +Vo pin of the DC-DC power module P1 and to the GND ground network. One end of the resistor R1 is connected to the +5V power supply network, and the other end is connected to the in+ pin of the three-terminal voltage regulator P2 and to one end of the capacitor C7. The other end of the capacitor C7 and the in- pin of the three-terminal voltage regulator P2 are connected to the GND ground network. The out+ pin of the three-terminal voltage regulator P2 is connected to one end of the capacitor C6 and one end of the variable resistor R2. The other end of the variable resistor R2 is connected to one end of the resistor R3 and to the non-inverting input of IC2C. The other end of the resistor R3 and the other end of C6 are connected to the GND ground network. The inverting input of IC2C is connected to the output of IC2C and is connected to the Ud network and one end of the resistor R4. The other end of R4 is connected to the GND ground network. One end of the resistor R14 is connected to the +5V power supply network, the other end of the resistor R14 is connected to one end of the fixed end of the potentiometer R21, the other end of the fixed end of the potentiometer R21 is connected to one end of the resistor R15, the other end of the resistor R15 is connected to the GND ground network, the sliding end of the potentiometer R21 is connected to one end of the capacitor C5 and the non-inverting input end of IC2A, the other end of the capacitor C5 is connected to the GND ground network, the inverting input end of IC2A is connected to the output end of IC2A and to one end of the resistor R16, the other end of the resistor R16 is connected to the U2 network, one end of the resistor R17 and the non-inverting input end of IC2B, and the other end of the resistor R17 is connected to the GND ground network; Pin 8 VSS of the dual-channel instrumentation amplifier integrated circuit IC1 is connected to a -5V power supply and one end of a capacitor C8, the other end of the capacitor C8 is connected to the GND ground network, the non-inverting input terminal V+inB of channel B of the dual-channel instrumentation amplifier integrated circuit IC1 is connected to the U1 network, and the inverting input terminal V-inB is connected to the U2 network, and pins 13 and 14 of channel B of the dual-channel instrumentation amplifier integrated circuit IC1 are connected to one end of resistors R6 and R7, respectively, and the other ends of resistors R6 and R7 are connected; Pin 12 of channel B of the dual-channel instrumentation amplifier integrated circuit IC1 is connected to the GND ground network, pin 11 VoB and pin 10 SenseB of channel B of the dual-channel instrumentation amplifier integrated circuit IC1 are connected and connected to one end of resistor R8, the other end of resistor R8 is connected to one end of resistor R9 and the non-inverting input terminal of IC2D, the other end of resistor R9 is connected to the GND ground network, and is also connected to the cathode of light-emitting diode D3 and the anode of light-emitting diode D4, and the anode of light-emitting diode D3 and the cathode of light-emitting diode D4 are connected to the GND ground network; Pins 3 and 5 of the 6-pin aviation plug J1 are connected to the GND ground network, pin 4 of the 6-pin aviation plug J1 is connected to the U1 network, one end of the resistor R5 and one end of the capacitor C2, the other end of the capacitor C2 is connected to the GND ground network, the other end of the resistor R5 is connected to the 2U2 network, one end of the resistor R11 is connected to the Ud network, the other end of the resistor R11 is connected to the inverting input end of IC2D and connected to one end of the resistor R10, the other end of the resistor R10 is connected to the output end of IC2D and one end of the fixed end of the potentiometer R22, and the other end of the fixed end of the potentiometer R22 is connected to the GND ground network.

2. The electronic throttle module with throttle opening display and fault diagnosis function according to claim 1, characterized in that: Pin 6 of the 6-pin aviation plug J1 is connected to the U2 network and one end of the capacitor C11, and the other end of the capacitor C11 is connected to the GND ground network.

3. The electronic throttle module with throttle opening display and fault diagnosis function according to claim 1, characterized in that: One end of the resistor R18 is connected to the inverting input of IC2B and one end of the resistor R19, the other end of the resistor R19 is connected to the output of IC2B, one end of the resistor R20 and the 2U2 network, and the other end of the resistor R19 and the other end of the resistor R20 are connected to the GND grounding network.

4. The electronic throttle module with throttle opening display and fault diagnosis function according to claim 1, characterized in that: Pin 1 of the connector J2 is connected to the U1 network, pin 2 is connected to the U2 network, and pins 3 and 4 are connected to the GND ground network.

5. The electronic throttle module with throttle opening display and fault diagnosis function according to claim 1, characterized in that: Pin 9 VDD of the dual-channel instrumentation amplifier integrated circuit IC1 is connected to a -5V power supply and one end of a capacitor C1 , and the other end of the capacitor C1 is connected to a GND grounding network.

6. The electronic throttle module with throttle opening display and fault diagnosis function according to claim 1, characterized in that: The sliding end of the potentiometer R22 is connected to the Vo+ network and to pin 1 of the DC voltmeter V1. Pin 2 of the DC voltmeter V1 is connected to the +5V power supply network. Pin 3 of the DC voltmeter V1 is connected to the GND grounding network.

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