CN212009381U

CN212009381U - Throttle controller detection device

Info

Publication number: CN212009381U
Application number: CN202021248160.5U
Authority: CN
Inventors: 高承秋; 谢航
Original assignee: United Automotive Electronic Systems Chongqing Co Ltd
Current assignee: United Automotive Electronic Systems Chongqing Co Ltd
Priority date: 2020-07-01
Filing date: 2020-07-01
Publication date: 2020-11-24
Anticipated expiration: 2030-07-01

Abstract

The utility model discloses a throttle valve controller detection device, including power module, first data sampling module, current detection module, detecting element and H bridge drive module, detecting element includes a analog-to-digital conversion module, a comparator module and waveform generator module. The utility model discloses in, can gather throttle controller's position sensor's signal, judge whether the voltage that throttle controller's position sensor fed back is normal, can detect H bridge drive module's operating current, judge whether throttle controller's electric current is normal to reduce the risk that the customer misjudged throttle controller's performance, reduce throttle controller after-sales maintenance cost and cost of labor; the input voltage of the power supply module is 9-36V, the 9-36V throttle valve controller can be driven to work, and the power supply module is good in universality, simple to operate and high in practicability.

Description

Throttle controller detection device

Technical Field

The utility model relates to a throttle valve controller test field, in particular to throttle valve controller detection device.

Background

Because a finished automobile factory does not have a professional throttle controller detection tool, when a finished automobile DTC reports a throttle controller fault code, a client cannot distinguish whether the reported fault code is abnormal in the functional characteristics of the throttle controller or is generated due to looseness between a finished automobile and a throttle controller connecting line or other reasons. In order to reduce the time cost, the labor cost, the financial cost and the like caused by the misjudgment of the fault of the throttle controller by a client, an automatic test device of the throttle controller, which can carry out professional test on the functional characteristics of the throttle controller and is convenient to carry and use, is urgently needed.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide a can judge throttle controller detection device of throttle controller trouble fast.

The technical scheme of the utility model as follows:

a throttle controller detection device comprises a power supply module, a first data sampling module, a current detection module, a detection unit and an H-bridge driving module, wherein the detection unit comprises a first analog-to-digital conversion module, a first comparator module and a waveform generator module; the sampling input end of the first data sampling module is used for being connected with a position sensor of a throttle controller, the output end of the first data sampling module is electrically connected with the input end of a first analog-to-digital conversion module, the output end of the first analog-to-digital conversion module is electrically connected with the first input end of a first comparator module, the second input end of the first comparator module is connected with reference voltage, the output end of the first analog-to-digital conversion module is electrically connected with a waveform generator module, the waveform generator module is electrically connected with the input end of an H-bridge driving module, the waveform generator module is also electrically connected with a current detection module, the H-bridge driving module is used for being connected with a driving motor of the throttle controller, and the H-bridge driving;

the power supply module is used for providing power supply voltage for the first data sampling module, the current detection module, the detection unit and the H-bridge driving module, and the first data sampling module is used for filtering, potential pull-up and voltage division of a sampling signal from a position sensor of the throttle controller; the first analog-to-digital conversion module is used for converting the analog signal output by the first data sampling module into a digital signal and then converting the digital signal into a sampling voltage; the first comparator module is used for comparing the sampling voltage output by the first analog-to-digital conversion module with a reference voltage; the waveform generator module is used for outputting square wave signals; the H-bridge driving module is used for converting the square wave signal output by the waveform generator module into driving voltage to drive a driving motor of the throttle valve controller to rotate.

Further, the power module includes a power chip IC1, a resistor R52, a resistor R53, a resistor R54, a capacitor C26, a capacitor C27, a capacitor C28, a capacitor C29, and a capacitor C30, the IN pin of the chip IC1 is used for connecting a power supply voltage VPWR, the IN pin of the power chip IC1 is further grounded through a capacitor C26, the capacitor C27 is connected IN parallel with the capacitor C26, the GND pin of the chip IC1 is grounded, the OUT pin is grounded through a capacitor C28, the resistor R52 and the capacitor C30 are connected IN series and then connected IN parallel with a capacitor C28, the resistor R53, the resistor R54, and the capacitor C29 are all connected IN parallel with the capacitor C28, and the OUT pin of the power chip IC1 outputs a 5V power supply voltage.

Further, the first data sampling module comprises a resistor R2, a resistor R29, a resistor R37, a resistor R38, a resistor R39, a resistor R40, a resistor R41, a resistor R42, a capacitor C1 and a capacitor C23; the first end of the capacitor C1 is grounded, the second end is used as the sampling input end of the first data sampling module to be connected with the position sensor of the throttle controller, the second end of the capacitor C1 is connected with a 5V power supply voltage through a resistor R2, the resistor R29, the resistor R37, the resistor R38 and the resistor R39 are all connected with the resistor R2 in parallel, the second end of the capacitor C1 is further electrically connected with the first end of the resistor R41 through a resistor R40, the first end of the resistor R41 is grounded through a resistor R42, the second end is grounded through a capacitor C23, and the second end of the resistor R41 is used as the output end of the first data sampling module to be electrically connected with the input end of the first analog-to-digital conversion module.

Further, the current detection module includes a current detection chip IC3, a resistor R25, a resistor R26, a resistor R27, a resistor R28, a resistor R30, a resistor R31, a capacitor C31, and a power supply device U31, an RS + pin of the chip IC 31 is electrically connected to the H-bridge driving module through the resistor R31, an RS + pin of the chip IC 31 is also grounded through the capacitor C31, an RS-pin of the chip IC 31 is also electrically connected to the H-bridge driving module through the resistor R31, an RS-pin of the chip IC 31 is also grounded through the capacitor C31, an SHDN pin of the chip IC 31 is connected to a 5V power supply voltage through the resistor R31, an SHDN pin of the chip IC 31 is also grounded through the resistor R31, a VCC pin of the chip IC 31 is connected to a GND, and a chip IC 31 is also connected to the GND, the VCC pin of the chip IC3 is also electrically connected with the first end of a power supply device U1 through a resistor R51, the second end of the power supply device U1 is grounded, the third end of the power supply device U1 is suspended, and the first end of the power supply device U1 outputs a supply voltage VCAL; the REFIN pin of the chip IC3 is connected with a power supply voltage VCAL, the REFIN pin of the chip IC3 is further electrically connected with the FB pin thereof through a resistor R27, the capacitor C20 is connected with the resistor R27 in parallel, the OUT pin of the chip IC3 is electrically connected with the FB pin thereof through a resistor R28, the OUT pin of the chip IC3 is electrically connected with a first end of a capacitor C22 through a resistor R30, the first end of the capacitor C22 is electrically connected with the waveform generator module, and the second end of the capacitor C22 is grounded.

Further, the H-bridge driving module includes a driving chip IC2, a resistor R3, a capacitor C2, a capacitor C3, a capacitor C4, a capacitor C5, a capacitor C6, a capacitor C7, and a capacitor C8; the GND pin, the PADGND pin and the SN pin of the chip IC2 are all grounded, the VM pin of the chip IC2 is connected with a power supply voltage VPWR, the VM pin of the chip IC2 is also grounded through a capacitor C4, the capacitor C2, a capacitor C3, a capacitor C5 and a capacitor C6 are all connected with a capacitor C4 in parallel, the VDRAIN pin of the chip IC2 is electrically connected with the VM pin thereof through a resistor R3, the VCP pin of the chip IC2 is electrically connected with the VM pin thereof through a capacitor C8, and the CPH pin of the chip IC2 is electrically connected with the CPL pin thereof through a capacitor C7;

the H-bridge driving module further comprises a resistor R1, a resistor R4, a resistor R5, a resistor R7, a resistor R8, a resistor R10, a resistor R11, a resistor R12, a resistor R13 and a resistor R14; the pin IN1 of the chip IC2 is electrically connected to the first output terminal of the waveform generator module through a resistor R4, the pin IN2 of the chip IC2 is electrically connected to the second output terminal of the waveform generator module through a resistor R5, the pin SDO of the chip IC2 is grounded through a resistor R7, the pin SDO of the chip IC2 is further connected to a 5V power supply voltage through a resistor R8, the pin ncss of the chip IC2 is electrically connected to its AVDD pin through a resistor R10, the pin ncss of the chip IC2 is further grounded through a resistor R11, the pin SDI of the chip IC2 is electrically connected to its AVDD pin through a resistor R12, the SDI of the chip IC2 is further grounded through a resistor R14, the pin SCLK of the chip IC2 is further grounded through a resistor R13, and the pin nSLEEP of the chip IC2 is further connected to a 5V power supply voltage through a resistor R1;

the H-bridge driving module further comprises a resistor R15, a resistor R17, a resistor R18, a resistor R20, a resistor R21, a resistor R22, a resistor R23, a resistor R24, a capacitor C12, a capacitor C13 and a capacitor C14; the nWDFLT pin of the chip IC2 is connected to a 5V power supply voltage through a resistor R15, the nWDFLT pin of the chip IC2 is further grounded through a resistor R18, the nFAULT pin of the chip IC2 is connected to the 5V power supply voltage through a resistor R21, the MODE pin of the chip IC2 is connected to the 5V power supply voltage through a resistor R23, the MODE pin of the chip IC2 is further grounded through a resistor R24, the DVDD pin of the chip IC2 is grounded through a capacitor C13, the AVDD pin of the chip IC2 is grounded through a capacitor C14, the VREF pin of the chip IC2 is grounded through a resistor R22, the VREF pin of the chip IC2 is further electrically connected to a first end of the resistor R20, a second end of the resistor R20 is grounded through a capacitor C12, a second end of the resistor R20 is further connected to a power supply voltage VCAL, and the SO pin of the chip IC2 is grounded through a resistor R17;

the H-bridge driving module further comprises a resistor R6, a resistor R9, a resistor R16, a resistor R19, a resistor R33, a resistor R34, a resistor R35, a resistor R36, a capacitor C9, a capacitor C10, a capacitor C11, a capacitor C15, a capacitor C16, a capacitor C17, a diode D1, a diode D2, a diode D3, a diode D4, a field-effect tube Q1, a field-effect tube Q2, a field-effect tube Q3 and a field-effect tube Q4; the GH1 pin of the chip IC2 is electrically connected with the gate of the FET Q4 through a resistor R36, the drain of the FET Q4 is connected with the supply voltage VPWR, the drain of the FET Q4 is also grounded through a capacitor C15, the capacitor C16 and the capacitor C17 are both connected in parallel with a capacitor C15, the source of the FET Q4 is electrically connected with the SH1 pin of the chip IC2, the source of the FET Q4 is also electrically connected with the positive terminal of a diode D4, the negative terminal of the diode D4 is electrically connected with the drain of the FET Q4, the positive terminal of the diode D4 is electrically connected with the first terminal of the resistor R16, the first terminal of the resistor R16 is electrically connected with a resistor R26 of the current detection module, the second terminal of the resistor R16 is electrically connected with a resistor R25 of the current detection module, the second terminal of the resistor R16 is also grounded through a capacitor C11, and the second terminal of the resistor R16 is also used as the negative terminal of the H bridge driving module for controlling the input of the throttle control device connected with the input, the resistor R19 is connected with the resistor R16 in parallel; the positive end of the diode D4 is also electrically connected with the drain of a field effect transistor Q3, the gate of the field effect transistor Q3 is electrically connected with the GL1 pin of the chip IC2 through a resistor R35, the source of the field effect transistor Q3 is electrically connected with the SP pin of the chip IC2, the SP pin of the chip IC2 is electrically connected with the SL2 pin thereof, the source of the field effect transistor Q3 is also electrically connected with the positive end of a diode D3, the negative end of the diode D3 is electrically connected with the drain of the field effect transistor Q3, the positive end of the diode D3 is grounded through a capacitor C10, and the resistor R6 and the resistor R9 are connected in parallel with the capacitor C10; the positive end of the diode D3 is also electrically connected with the source of a field effect transistor Q2, the gate of the field effect transistor Q2 is electrically connected with the GL2 pin of a chip IC2 through a resistor R34, the drain of the field effect transistor Q2 is electrically connected with the SH2 pin of a chip IC2, the drain of the field effect transistor Q2 is also electrically connected with the negative end of the diode D2, the negative end of the diode D2 is grounded through a capacitor C9, the negative end of the diode D2 is also used as the output positive end of an H-bridge driving module for connecting the input positive end of a driving motor of a throttle controller, and the positive end of the diode D2 is electrically connected with the source of the field effect transistor Q2; the negative end of the diode D2 is also electrically connected with the source of a field effect transistor Q1, the grid of the field effect transistor Q1 is electrically connected with the GH2 pin of the chip IC2 through a resistor R33, the drain of the field effect transistor Q1 is connected with the power supply voltage VPWR, the drain of the field effect transistor Q1 is also electrically connected with the negative end of the diode D1, and the positive end of the diode D1 is electrically connected with the source of the field effect transistor Q2.

Further, the detection device further comprises a display module, wherein the display module comprises a comparator U2, a comparator U3, a resistor R55, a resistor R56, a resistor R57, a resistor R58, a resistor R59, a resistor R60, a resistor R61, a resistor R62, a light emitting diode D5, a light emitting diode D6, a light emitting diode D7 and a triode Q5; the positive phase input end of the comparator U2 is connected with a 5V power supply voltage through a resistor R55, the negative phase input end of the comparator U2 is electrically connected with the first end of a capacitor C22 of the current detection module, the output end of the comparator U2 is electrically connected with the positive end of a light-emitting diode D5, and the negative end of the light-emitting diode D5 is grounded through a resistor R58; the positive phase input end of the comparator U3 is electrically connected with the first end of the capacitor C22 of the current detection module, the negative phase input end of the comparator U3 is electrically connected with the positive phase input end of the comparator U2 through a resistor R56, the negative phase input end of the comparator U3 is also grounded through a resistor R57, the output end of the comparator U3 is electrically connected with the positive end of the light-emitting diode D6, and the negative end of the light-emitting diode D6 is grounded through a resistor R59; the emitter of the triode Q5 is connected with a 5V power supply voltage through a resistor R60, the emitter of the triode Q5 is grounded through a resistor R61, the collector of the triode Q5 is electrically connected with the positive end of a light-emitting diode D7, the negative end of the light-emitting diode D7 is grounded, and the base of the triode Q5 is electrically connected with the nFAULT pin of a chip IC2 through a resistor R62.

Furthermore, the detection device further comprises a second data sampling module, the structure of the second data sampling module is the same as that of the first data sampling module, the detection unit further comprises a second analog-to-digital conversion module and a second comparator module, the output end of the second data sampling module is electrically connected with the input end of the second analog-to-digital conversion module, the first input end of the second comparator module is electrically connected with the output end of the first analog-to-digital conversion module, and the second input end of the second comparator module is electrically connected with the output end of the second analog-to-digital conversion module; the display module further comprises a resistor R63, a light emitting diode D8 and a light emitting diode D9, wherein the positive end of the light emitting diode D8 is electrically connected with the output end of the second comparator module through a resistor R63, and the negative end of the light emitting diode D8 is grounded; the negative end of the light-emitting diode D9 is electrically connected with the positive end of the light-emitting diode D8, and the positive end is grounded.

Further, the detection unit further comprises a protection module and a reset module, wherein the protection module is electrically connected with an nFAULT pin of the chip IC2, the protection module is further electrically connected with a first end of a capacitor C22 of the current detection module, the protection module is further electrically connected with the reset module, and the reset module is electrically connected with the waveform generator module.

Has the advantages that: in the utility model, whether the voltage fed back by the position sensor of the throttle controller is normal can be judged by collecting the signal of the position sensor of the throttle controller, and whether the current of the throttle controller is normal can be judged by detecting the working current of the H-bridge driving module, thereby reducing the risk of misjudgment of the performance of the throttle controller by a customer, and reducing the after-sale maintenance cost and the labor cost of the throttle controller; the input end of the power supply module can adapt to the voltage of 9-36V, so that the input voltage of various types of throttle controllers is covered, and the universality of the detection device is improved; the operation is simple, and the practicability is strong.

Drawings

FIG. 1 is a block diagram of a preferred embodiment of a throttle controller detecting device according to the present invention;

FIG. 2 is a circuit diagram of a power module;

FIG. 3 is a circuit diagram of a first data sampling module;

FIG. 4 is a circuit diagram of a second data sampling module;

FIG. 5 is a circuit diagram of a current sensing module;

FIG. 6 is a circuit diagram of an H-bridge driver module;

fig. 7 is a circuit diagram of the display module.

In the figure: 1. the device comprises a power supply module, 2, a first data sampling module, 3, a second data sampling module, 4, a current detection module, 5, a detection unit, 6, an H-bridge driving module, 7, a display module, 8, a throttle valve controller, 51, a first analog-to-digital conversion module, 52, a second analog-to-digital conversion module, 53, a first comparator module, 54, a second comparator module, 55, a waveform generator module, 56, a protection module and 57, and a reset module.

Detailed Description

The present invention will be further explained with reference to the drawings and examples.

As shown in fig. 1, a throttle controller detection device includes a power module 1, a first data sampling module 2, a second data sampling module 3, a current detection module 4, a detection unit 5, an H-bridge driving module 6 and a display module 7; the power supply module 1 is used for providing power supply voltage for the first data sampling module 2, the second data sampling module 3, the current detection module 4, the detection unit 5, the H-bridge driving module 6 and the display module 7; the detection unit 5 comprises a first analog-to-digital conversion module 51, a second analog-to-digital conversion module 52, a first comparator module 53, a second comparator module 54, a waveform generator module 55, a protection module 56 and a reset module 57; the first analog-to-digital conversion module 51 and the second analog-to-digital conversion module 52 are configured to convert an analog signal into a digital signal, and then convert the digital signal into a sampling voltage; the first comparator module 53 is configured to compare the sampling voltage output by the first analog-to-digital conversion module 51 with a reference voltage; the second comparator module 54 is configured to compare the sampled voltage output by the first analog-to-digital conversion module 51 with the sampled voltage output by the second analog-to-digital conversion module 52; the waveform generator module 55 is configured to output a square wave signal, the protection module 56 is configured to enable the reset module 57 to operate when a fault signal is detected, and the reset module 57 is configured to temporarily cut off the output signal of the waveform generator module 55.

Sampling input ends of the first data sampling module 2 and the second data sampling module 3 are respectively used for connecting a position sensor of a throttle valve controller 8, an output end of the first data sampling module 2 is electrically connected with an input end of a first analog-to-digital conversion module 51, an output end of the first analog-to-digital conversion module 51 is respectively electrically connected with a first input end of a first comparator module 53 and a first input end of a second comparator module 54, and a second input end of the first comparator module 53 is connected with a reference voltage; the output end of the second data sampling module 3 is electrically connected to the input end of the second analog-to-digital conversion module 52, the output end of the second analog-to-digital conversion module 52 is electrically connected to the second input end of the second comparator module 54, and the output end of the second comparator module 54 is electrically connected to the display module 7.

The output end of the first comparator module 53 is electrically connected with a waveform generator module 55, and the waveform generator module 55 is electrically connected with the input end of the H-bridge driving module 6; the H-bridge driving module 6 is used for connecting a driving motor of the throttle controller 8, the H-bridge driving module 6 is also electrically connected with the current detection module 4, the protection module 56 and the display module 7 respectively, and the current detection module 4 is electrically connected with the waveform generator module 55, the protection module 56 and the display module 7 respectively; the protection module 56 is electrically connected to a reset module 57, and the reset module 57 is electrically connected to the waveform generator module 55.

As shown IN fig. 2, the power module 1 includes a power chip IC1, a resistor R52, a resistor R53, a resistor R54, a capacitor C26, a capacitor C27, a capacitor C28, a capacitor C29 and a capacitor C30, the chip IC1 is preferably an NCV4274 power chip, an input end of the chip IC1 is capable of adapting to a supply voltage VPWR of 9-36V, an IN pin of the chip IC1 is used for connecting the supply voltage VPWR, the IN pin of the power chip IC1 is further grounded through the capacitor C26, the capacitor C27 is connected IN parallel with the capacitor C26, a GND pin of the chip IC1 is grounded, an OUT pin is grounded through the capacitor C28, the resistor R52 and the capacitor C30 are connected IN series and then connected IN parallel with the capacitor C28, the resistor R53, the resistor R54 and the capacitor C29 are all connected IN parallel with the capacitor C28, and the OUT pin of the power chip IC 1.

As shown in fig. 3, the first data sampling module 2 includes a resistor R2, a resistor R29, a resistor R37, a resistor R38, a resistor R39, a resistor R40, a resistor R41, a resistor R42, a capacitor C1, and a capacitor C23; the first end of the capacitor C1 is grounded, the second end is used as the sampling input end of the first data sampling module 2 to connect the position sensor of the throttle valve controller 8, the second end of the capacitor C1 is connected with 5V power supply voltage through a resistor R2, the resistors R29, R37, R38 and R39 are all connected in parallel with the resistor R2, the second end of the capacitor C1 is further electrically connected with the first end of the resistor R41 through a resistor R40, the first end of the resistor R41 is grounded through a resistor R42, the second end is grounded through a capacitor C23, and the second end of the resistor R41 is electrically connected with the first analog-to-digital conversion module 51 as the output end of the first data sampling module 2.

As shown in fig. 4, the first data sampling module 2 includes a resistor R43, a resistor R44, a resistor R45, a resistor R46, a resistor R47, a resistor R48, a resistor R49, a resistor R50, a capacitor C24, and a capacitor C25; the first end of the capacitor C24 is grounded, the second end is used as the sampling input end of the second data sampling module 3 to connect the position sensor of the throttle valve controller 8, the second end of the capacitor C24 is connected with 5V power supply voltage through a resistor R43, the resistor R44, the resistor R45, the resistor R46 and the resistor R47 are all connected in parallel with the resistor R43, the second end of the capacitor C24 is also electrically connected with the first end of the resistor R49 through a resistor R48, the first end of the resistor R49 is grounded through a resistor R50, the second end is grounded through a capacitor C25, and the second end of the resistor R49 is electrically connected with the second analog-to-digital conversion module 52 as the output end of the second data sampling module 3.

As shown in fig. 5, the current detection module 4 includes a current detection chip IC3, a resistor R25, a resistor R26, a resistor R27, a resistor R28, a resistor R30, a resistor R31, a resistor R32, a resistor R51, a capacitor C18, a capacitor C19, a capacitor C20, a capacitor C21, a capacitor C22, and a power device U1, where the chip IC3 is preferably a MAX9920 current detection chip, and the power device U1 is an LM 4050; the RS + pin of the chip IC3 is electrically connected to the H-bridge driving module 6 through a resistor R25, the RS + pin of the chip IC3 is further grounded through a capacitor C18, the RS-pin of the chip IC3 is electrically connected to the H-bridge driving module 6 through a resistor R26, the RS-pin of the chip IC3 is further grounded through a capacitor C21, the SHDN pin of the chip IC3 is connected to a 5V power supply voltage through a resistor R31, the SHDN pin of the chip IC3 is further grounded through a resistor R32, the GND pin of the chip IC3 is grounded, the VCC pin of the chip IC3 is connected to a 5V power supply voltage, the VCC pin of the chip IC3 is further grounded through a capacitor C19, the VCC pin of the chip IC3 is further electrically connected to a first end of a power supply device U1 through a resistor R51, a second end of the power supply device U1 is grounded, a third end of the power supply device U1 outputs a power supply voltage VCAL; the REFIN pin of the chip IC3 is connected with a power supply voltage VCAL, the REFIN pin of the chip IC3 is further electrically connected with the FB pin thereof through a resistor R27, the capacitor C20 is connected with the resistor R27 in parallel, the OUT pin of the chip IC3 is electrically connected with the FB pin thereof through a resistor R28, the OUT pin of the chip IC3 is electrically connected with a first end of a capacitor C22 through a resistor R30, the first end of the capacitor C22 is respectively electrically connected with the waveform generator module 55, the protection module 56 and the display module 7, and the second end is grounded.

As shown in fig. 6, the H-bridge driving module 6 includes a driving chip IC2, a resistor R3, a capacitor C2, a capacitor C3, a capacitor C4, a capacitor C5, a capacitor C6, a capacitor C7, and a capacitor C8; the chip IC2 is preferably a DRV8703-Q1 driving chip, the GND pin, the PADGND pin and the SN pin of the chip IC2 are all grounded, the VM pin of the chip IC2 is connected with a supply voltage VPWR, the VM pin of the chip IC2 is also grounded through a capacitor C4, the capacitor C2, the capacitor C3, the capacitor C5 and the capacitor C6 are all connected in parallel with the capacitor C4, the VDRAIN pin of the chip IC2 is electrically connected with the VM pin thereof through a resistor R3, the VCP pin of the chip IC2 is electrically connected with the VM pin thereof through a capacitor C8, and the CPH pin of the chip IC2 is electrically connected with the CPL pin thereof through a capacitor C7.

The H-bridge driving module 6 further comprises a resistor R1, a resistor R4, a resistor R5, a resistor R7, a resistor R8, a resistor R10, a resistor R11, a resistor R12, a resistor R13 and a resistor R14; the pin IN1 of the chip IC2 is electrically connected to the first output terminal of the waveform generator module 55 through a resistor R4, the pin IN2 of the chip IC2 is electrically connected to the second output terminal of the waveform generator module 55 through a resistor R5, the SDO pin of the chip IC2 is grounded through a resistor R7, the SDO pin of the chip IC2 is further connected to a 5V power supply voltage through a resistor R8, the nSCS pin of the chip IC2 is electrically connected to the AVDD pin thereof through a resistor R10, the nSCS pin of the chip IC2 is further grounded through a resistor R11, the SDI pin of the chip IC2 is electrically connected to the AVDD pin thereof through a resistor R12, the SDI pin of the chip IC2 is further grounded through a resistor R14, the SCLK pin of the chip IC2 is further grounded through a resistor R13, and the nSLEEP pin of the chip IC2 is further connected to a 5V power supply voltage through a resistor R1.

The H-bridge driving module 6 further comprises a resistor R15, a resistor R17, a resistor R18, a resistor R20, a resistor R21, a resistor R22, a resistor R23, a resistor R24, a capacitor C12, a capacitor C13 and a capacitor C14; the nWDFLT pin of the chip IC2 is connected to a 5V supply voltage through a resistor R15, the nWDFLT pin of the chip IC2 is also connected to ground through a resistor R18, the nFAULT pin of the chip IC2 is connected to a 5V supply voltage through a resistor R21, the nFAULT pins of the chip IC2 are also electrically connected to the protection module 56 and the display module 7 respectively, the MODE pin of the chip IC2 is connected with a 5V supply voltage through a resistor R23, the MODE pin of the chip IC2 is also connected with the ground through a resistor R24, the DVDD pin of the chip IC2 is grounded through a capacitor C13, the AVDD pin of the chip IC2 is grounded through a capacitor C14, the VREF pin of the chip IC2 is grounded through a resistor R22, the VREF pin of the chip IC2 is also electrically connected with a first end of a resistor R20, the second end of the resistor R20 is grounded through a capacitor C12, the second end of the resistor R20 is also connected with a supply voltage VCAL, and the SO pin of the chip IC2 is grounded through a resistor R17.

The H-bridge driving module 6 further comprises a resistor R6, a resistor R9, a resistor R16, a resistor R19, a resistor R33, a resistor R34, a resistor R35, a resistor R36, a capacitor C9, a capacitor C10, a capacitor C11, a capacitor C15, a capacitor C16, a capacitor C17, a diode D1, a diode D2, a diode D3, a diode D4, a field-effect transistor Q1, a field-effect transistor Q2, a field-effect transistor Q3 and a field-effect transistor Q4; the GH1 pin of the chip IC2 is electrically connected with the gate of the fet Q4 through a resistor R36, the drain of the fet Q4 is connected to the supply voltage VPWR, the drain of the fet Q4 is also grounded through a capacitor C15, the capacitor C16 and the capacitor C17 are both connected in parallel with a capacitor C15, the source of the fet Q4 is electrically connected with the SH 28 pin of the chip IC2, the source of the fet Q4 is also electrically connected with the positive terminal of a diode D4, the negative terminal of the diode D4 is electrically connected with the drain of the fet Q4, the positive terminal of the diode D4 is electrically connected with the first terminal of a resistor R16, the first terminal of the resistor R16 is electrically connected with the resistor R26 of the current detection module 4, the second terminal of the resistor R16 is electrically connected with the resistor R16 of the current detection module 4, the second terminal of the resistor R16 is also connected with the ground through a capacitor C16, and the second terminal of the resistor R16 is also used as the negative terminal of the throttle control input of the throttle control drive module connected with the H8, the resistor R19 is connected with the resistor R16 in parallel; the positive end of the diode D4 is also electrically connected with the drain of a field effect transistor Q3, the gate of the field effect transistor Q3 is electrically connected with the GL1 pin of the chip IC2 through a resistor R35, the source of the field effect transistor Q3 is electrically connected with the SP pin of the chip IC2, the SP pin of the chip IC2 is electrically connected with the SL2 pin thereof, the source of the field effect transistor Q3 is also electrically connected with the positive end of a diode D3, the negative end of the diode D3 is electrically connected with the drain of the field effect transistor Q3, the positive end of the diode D3 is grounded through a capacitor C10, and the resistor R6 and the resistor R9 are connected in parallel with the capacitor C10; the positive end of the diode D3 is further electrically connected with the source of a field effect transistor Q2, the gate of the field effect transistor Q2 is electrically connected with the GL2 pin of the chip IC2 through a resistor R34, the drain of the field effect transistor Q2 is electrically connected with the SH2 pin of the chip IC2, the drain of the field effect transistor Q2 is further electrically connected with the negative end of the diode D2, the negative end of the diode D2 is grounded through a capacitor C9, the negative end of the diode D2 is also used as the output positive end of the H-bridge driving module 6 for connecting the input positive end of the driving motor of the throttle controller 8, and the positive end of the diode D2 is electrically connected with the source of the field effect transistor Q2; the negative end of the diode D2 is also electrically connected with the source of a field effect transistor Q1, the grid of the field effect transistor Q1 is electrically connected with the GH2 pin of the chip IC2 through a resistor R33, the drain of the field effect transistor Q1 is connected with the power supply voltage VPWR, the drain of the field effect transistor Q1 is also electrically connected with the negative end of the diode D1, and the positive end of the diode D1 is electrically connected with the source of the field effect transistor Q2.

As shown in fig. 7, the display module 7 includes a comparator U2, a comparator U3, a resistor R55, a resistor R56, a resistor R57, a resistor R58, a resistor R59, a resistor R60, a resistor R61, a resistor R62, a resistor R63, a light emitting diode D5, a light emitting diode D6, a light emitting diode D7, a light emitting diode D8, a light emitting diode D9, and a transistor Q5; the positive phase input end of the comparator U2 is connected with a 5V power supply voltage through a resistor R55, the negative phase input end of the comparator U2 is electrically connected with the first end of a capacitor C22 of the current detection module 4, the output end of the comparator U2 is electrically connected with the positive end of a light-emitting diode D5, and the negative end of the light-emitting diode D5 is grounded through a resistor R58; the positive phase input end of the comparator U3 is electrically connected with the first end of the capacitor C22 of the current detection module 4, the negative phase input end of the comparator U3 is electrically connected with the positive phase input end of the comparator U2 through a resistor R56, the negative phase input end of the comparator U3 is also grounded through a resistor R57, the output end of the comparator U3 is electrically connected with the positive end of the light emitting diode D6, and the negative end of the light emitting diode D6 is grounded through a resistor R59; the emitter of the triode Q5 is connected with a 5V power supply voltage through a resistor R60, the emitter of the triode Q5 is also grounded through a resistor R61, the collector of the triode Q5 is electrically connected with the positive end of a light-emitting diode D7, the negative end of the light-emitting diode D7 is grounded, and the base of the triode Q5 is electrically connected with the nFAULT pin of the chip IC2 through a resistor R62; the positive end of the light emitting diode D8 is electrically connected with the output end of the second comparator module 54 through a resistor R63, and the negative end is grounded; the negative end of the light-emitting diode D9 is electrically connected with the positive end of the light-emitting diode D8, and the positive end is grounded.

The working principle of the embodiment is as follows:

1. detection of throttle control for dual position sensor

Before detection, sampling input ends of the first data sampling module 2 and the second data sampling module 3 are respectively and electrically connected with two position sensors of the throttle valve controller 8, and two output ends of the H-bridge driving module 6 are respectively and electrically connected with two input ends of a driving motor of the throttle valve controller 8. During detection, the power module 1 converts input power supply voltage VPWR (9-36V) into 5V voltage to supply power to each module, the waveform generator module 55 outputs square wave signals to the H-bridge driving module 6, the H-bridge driving module 6 outputs driving voltage to operate a driving motor of the throttle controller 8 to open a valve of the throttle valve by a predetermined opening degree, two position sensors of the throttle controller 8 respectively convert opening degree information of the valve into a signal TSP1 and a signal TSP2, the first data sampling module 2 samples the signal TSP1, performs low-pass filtering, performs 5V voltage pull-up and resistance voltage division to output a signal TSPOUT1 to the first analog-to-digital conversion module 51, the signal TSPOUT1 can be compatible with a processing chip of a 5V AD control system and a 3.3V AD control system at the same time through resistance voltage division, the first analog-to-digital conversion module 51 converts the signal TSPOUT1 into sampling voltage and then sends the sampling voltage to the first comparator module 53 to compare with reference voltage, the reference voltage value is determined according to an opening value preset by the throttle controller 8, when the sampling voltage output by the first analog-to-digital conversion module 51 is not equal to the reference voltage, the first comparator module 51 outputs a voltage signal to adjust the duty ratio of the square wave signal output by the waveform generator module 55, so as to adjust the driving voltage output by the H-bridge driving module 6, adjust the opening of the throttle valve, and adjust the frequency of the square wave signal when adjusting the duty ratio of the square wave signal to increase the adjustment precision of the throttle opening. When the opening degree of the throttle valve reaches the opening degree value preset by the throttle valve controller 8, the sampling voltage output by the first analog-to-digital conversion module 51 is equal to the reference voltage, and the first comparator module 53 has no output.

In the detection process, the current detection module 4 detects the current signal output by the H-bridge driving module 6, and outputs a voltage signal ISNS to the waveform generator module 55, the protection module 56 and the display module 7, when the value of the signal ISNS is greater than the value of the comparison voltage V1 at the negative phase input end of the comparator U3 and less than the value of the comparison voltage V2 at the positive phase input end of the comparator U3 (the value of the comparison voltage V1 is the output voltage value of the current detection module 4 when the working current of the H-bridge driving module 6 is the rated value, and the value of the comparison voltage V2 is the output voltage value of the current detection module 4 when the working current of the H-bridge driving module 6 reaches the maximum allowable current value), the duty ratio of the square wave signal output by the waveform generator module 55 is reduced, so that the current of the H-bridge driving module 6 is reduced, at this time, the protection module 56 does not operate, the light emitting diode D6 of the display module, prompting that the working current of the H-bridge driving module 6 is larger; when the value of the signal ISNS is greater than the value of the comparison voltage V2 at the non-inverting input terminal of the comparator U3, the protection module 56 operates, the reset module 57 briefly cuts off the output signal of the waveform generator module 55 to restart the H-bridge driving module 6, and at this time, both the led D6 and the led D5 of the display module 7 are turned on to indicate that the operating current of the H-bridge driving module 6 exceeds the maximum limit value. In addition, the chip IC2 also detects its own working state during the detection process, when it detects that its own working state is abnormal, its nFAULT pin outputs a low level as Err signal to make the protection module 56 work, the reset module 57 cuts off the output signal of the waveform generator module 55 for a short time to restart the H-bridge driving module 6; meanwhile, the Err signal also turns on the triode Q5, and the light-emitting diode D7 lights up to prompt that the H-bridge driving module 6 works abnormally.

In the detection process, the second data sampling circuit 3 samples the signal TSP2 in real time, performs low-pass filtering, pulls up the 5V voltage and divides the voltage by resistors to output a signal TSPOUT2 to the second analog-to-digital conversion module 52, and enables the signal TSPOUT2 to be compatible with a processing chip of a 5V AD control system and a 3.3V AD control system at the same time through the voltage division by resistors, the second analog-to-digital conversion module 52 converts the signal TSPOUT2 into a sampling voltage and sends the sampling voltage to the second comparator module 54, and the sampling voltage is compared with the sampling voltage output by the first analog-to-digital conversion module 51, because the signal TSP1 and the signal TSP2 are both used for indicating the opening degree of the throttle valve, under the normal condition, the sampling voltage output by the first analog-to-digital conversion module 51 is equal to the sampling voltage output by the second analog-to-digital conversion module 52. When the sampling voltage output by the first analog-to-digital conversion module 51 is not equal to the sampling voltage output by the second analog-to-digital conversion module 52, the second comparator module 54 outputs a voltage signal to light the light emitting diode D8 or the light emitting diode D9, so as to prompt the position sensor of the throttle controller 8 to have a fault.

In addition, the power module 1 of the embodiment adopts the NCV4274 power chip, the input end of the power module can adapt to the power supply voltage of 9-36V, and the input voltage of the throttle controller 8 of various models is covered, so that the power module can be connected with the same power supply voltage with the throttle controller 8 to be tested, the driving signal voltage output by the H-bridge driving module 6 is ensured to be adapted to the throttle controller 8 to be tested, the throttle controller of 9-36V can be driven to work, and the universality of the detection device is increased.

2. Detection of throttle control for single position sensor

Before detection, the sampling input end of the first data sampling module 2 is electrically connected with the position sensor of the throttle controller 8, and the two output ends of the H-bridge driving module 6 are respectively and electrically connected with the two input ends of the driving motor of the throttle controller 8. At this time, since the second data sampling module 3 is not connected to the position sensor, the second analog-to-digital conversion module 52 does not operate, and the second comparator module 54 has only one input, and cannot detect a fault of the position sensor, the lighting of the light emitting diodes D8 and D9 is ignored, and the operation principle of the other parts is the same as the detection principle of the throttle controller of the two-position sensor.

In this embodiment, the first analog-to-digital conversion module 51, the second analog-to-digital conversion module 52, the first comparator module 53, the second comparator module 54, the waveform generator module 55, the protection module 56, and the reset module 57 are all in the prior art, and existing components can achieve the above functions, which is not described herein again.

The utility model discloses do not describe the part unanimously with prior art, do not describe herein any more.

The above is only the embodiment of the present invention, not the limitation of the patent scope of the present invention, all the equivalent structures made by the contents of the specification and the drawings are directly or indirectly applied to other related technical fields, all the same principle is within the patent protection scope of the present invention.

Claims

1. The throttle valve controller detection device is characterized by comprising a power supply module, a first data sampling module, a current detection module, a detection unit and an H-bridge driving module, wherein the detection unit comprises a first analog-to-digital conversion module, a first comparator module and a waveform generator module; the sampling input end of the first data sampling module is used for being connected with a position sensor of a throttle controller, the output end of the first data sampling module is electrically connected with the input end of a first analog-to-digital conversion module, the output end of the first analog-to-digital conversion module is electrically connected with the first input end of a first comparator module, the second input end of the first comparator module is connected with reference voltage, the output end of the first analog-to-digital conversion module is electrically connected with a waveform generator module, the waveform generator module is electrically connected with the input end of an H-bridge driving module, the waveform generator module is also electrically connected with a current detection module, the H-bridge driving module is used for being connected with a driving motor of the throttle controller, and the H-bridge driving;

2. The throttle valve controller detection device according to claim 1, wherein the power module comprises a power chip IC1, a resistor R52, a resistor R53, a resistor R54, a capacitor C26, a capacitor C27, a capacitor C28, a capacitor C29 and a capacitor C30, the IN pin of the chip IC1 is used for connecting a supply voltage VPWR, the IN pin of the power chip IC1 is further grounded through a capacitor C26, the capacitor C27 is connected IN parallel with the capacitor C26, the GND pin of the chip IC1 is grounded, the OUT pin is grounded through a capacitor C28, the resistor R52 and the capacitor C30 are connected IN series and then connected IN parallel with a capacitor C28, the resistor R53, the resistor R54 and the capacitor C29 are all connected IN parallel with the capacitor C28, and the OUT pin of the power chip IC1 outputs a 5V supply voltage.

3. The throttle control detection apparatus of claim 2, wherein the first data sampling module comprises a resistor R2, a resistor R29, a resistor R37, a resistor R38, a resistor R39, a resistor R40, a resistor R41, a resistor R42, a capacitor C1, and a capacitor C23; the first end of the capacitor C1 is grounded, the second end is used as the sampling input end of the first data sampling module to be connected with the position sensor of the throttle controller, the second end of the capacitor C1 is connected with a 5V power supply voltage through a resistor R2, the resistor R29, the resistor R37, the resistor R38 and the resistor R39 are all connected with the resistor R2 in parallel, the second end of the capacitor C1 is further electrically connected with the first end of the resistor R41 through a resistor R40, the first end of the resistor R41 is grounded through a resistor R42, the second end is grounded through a capacitor C23, and the second end of the resistor R41 is used as the output end of the first data sampling module to be electrically connected with the input end of the first analog-to-digital conversion module.

4. The throttle controller detecting device according to claim 3, wherein the current detecting module comprises a current detecting chip IC3, a resistor R25, a resistor R26, a resistor R27, a resistor R28, a resistor R30, a resistor R31, a resistor R32, a resistor R51, a capacitor C18, a capacitor C19, a capacitor C20, a capacitor C21, a capacitor C22 and a power supply device U1, the RS + pin of the chip IC3 is electrically connected to the H-bridge driving module through a resistor R25, the RS + pin of the chip IC3 is further grounded through a capacitor C18, the RS-pin of the chip IC3 is electrically connected to the H-bridge driving module through a resistor R26, the RS-pin of the chip IC3 is further grounded through a capacitor C21, the SHDN pin of the chip IC3 is further connected to a 5V power supply voltage through a resistor R31, the SHDN pin of the chip IC3 is further grounded through a resistor R32, the VCC 3 of the chip IC3 is connected to a GND voltage, and the chip 3 is connected to a GND voltage, the VCC pin of the chip IC3 is grounded through a capacitor C19, the VCC pin of the chip IC3 is electrically connected with the first end of a power supply device U1 through a resistor R51, the second end of the power supply device U1 is grounded, the third end of the power supply device U1 is suspended, and the first end of the power supply device U1 outputs a supply voltage VCAL; the REFIN pin of the chip IC3 is connected with a power supply voltage VCAL, the REFIN pin of the chip IC3 is further electrically connected with the FB pin thereof through a resistor R27, the capacitor C20 is connected with the resistor R27 in parallel, the OUT pin of the chip IC3 is electrically connected with the FB pin thereof through a resistor R28, the OUT pin of the chip IC3 is electrically connected with a first end of a capacitor C22 through a resistor R30, the first end of the capacitor C22 is electrically connected with the waveform generator module, and the second end of the capacitor C22 is grounded.

5. The throttle controller detection device according to claim 4, wherein the H-bridge driving module comprises a driving chip IC2, a resistor R3, a capacitor C2, a capacitor C3, a capacitor C4, a capacitor C5, a capacitor C6, a capacitor C7 and a capacitor C8; the GND pin, the PADGND pin and the SN pin of the chip IC2 are all grounded, the VM pin of the chip IC2 is connected with a power supply voltage VPWR, the VM pin of the chip IC2 is also grounded through a capacitor C4, the capacitor C2, a capacitor C3, a capacitor C5 and a capacitor C6 are all connected with a capacitor C4 in parallel, the VDRAIN pin of the chip IC2 is electrically connected with the VM pin thereof through a resistor R3, the VCP pin of the chip IC2 is electrically connected with the VM pin thereof through a capacitor C8, and the CPH pin of the chip IC2 is electrically connected with the CPL pin thereof through a capacitor C7;

6. The throttle control detection device according to claim 5, further comprising a display module, wherein the display module comprises a comparator U2, a comparator U3, a resistor R55, a resistor R56, a resistor R57, a resistor R58, a resistor R59, a resistor R60, a resistor R61, a resistor R62, a light emitting diode D5, a light emitting diode D6, a light emitting diode D7 and a triode Q5; the positive phase input end of the comparator U2 is connected with a 5V power supply voltage through a resistor R55, the negative phase input end of the comparator U2 is electrically connected with the first end of a capacitor C22 of the current detection module, the output end of the comparator U2 is electrically connected with the positive end of a light-emitting diode D5, and the negative end of the light-emitting diode D5 is grounded through a resistor R58; the positive phase input end of the comparator U3 is electrically connected with the first end of the capacitor C22 of the current detection module, the negative phase input end of the comparator U3 is electrically connected with the positive phase input end of the comparator U2 through a resistor R56, the negative phase input end of the comparator U3 is also grounded through a resistor R57, the output end of the comparator U3 is electrically connected with the positive end of the light-emitting diode D6, and the negative end of the light-emitting diode D6 is grounded through a resistor R59; the emitter of the triode Q5 is connected with a 5V power supply voltage through a resistor R60, the emitter of the triode Q5 is grounded through a resistor R61, the collector of the triode Q5 is electrically connected with the positive end of a light-emitting diode D7, the negative end of the light-emitting diode D7 is grounded, and the base of the triode Q5 is electrically connected with the nFAULT pin of a chip IC2 through a resistor R62.

7. The throttle controller detection device according to claim 6, wherein the detection device further comprises a second data sampling module, the second data sampling module has the same structure as the first data sampling module, the detection unit further comprises a second analog-to-digital conversion module and a second comparator module, an output end of the second data sampling module is electrically connected with an input end of the second analog-to-digital conversion module, a first input end of the second comparator module is electrically connected with an output end of the first analog-to-digital conversion module, and a second input end of the second comparator module is electrically connected with an output end of the second analog-to-digital conversion module; the display module further comprises a resistor R63, a light emitting diode D8 and a light emitting diode D9, wherein the positive end of the light emitting diode D8 is electrically connected with the output end of the second comparator module through a resistor R63, and the negative end of the light emitting diode D8 is grounded; the negative end of the light-emitting diode D9 is electrically connected with the positive end of the light-emitting diode D8, and the positive end is grounded.

8. The throttle control detection device of claim 5, wherein the detection unit further comprises a protection module electrically connected to the nFAULT pin of the chip IC2, the protection module further electrically connected to the first terminal of the capacitor C22 of the current detection module, the protection module further electrically connected to the reset module, the reset module electrically connected to the waveform generator module.