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Vehicle solenoid valve fault diagnosis addressing circuit and usage method

A fault diagnosis, solenoid valve technology, applied in general control systems, electrical testing/monitoring, instruments, etc., can solve problems such as easy misjudgment, weak responsiveness, and difficulty in ensuring accuracy, avoiding dangerous situations and realizing failures Responding to and realizing the effect of fault diagnosis

Active Publication Date: 2016-05-04
DONGFENG COMML VEHICLE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] First of all, this design mainly diagnoses whether the fault exists based on the current detected by the sensor. The entire judgment depends on the sensitivity of the sensor. Low;
[0005] Secondly, although the design can realize the fault diagnosis function, it does not provide effective countermeasures to solve the fault, so its response is weak

Method used

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  • Vehicle solenoid valve fault diagnosis addressing circuit and usage method
  • Vehicle solenoid valve fault diagnosis addressing circuit and usage method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] see figure 1 and figure 2 , a vehicle solenoid valve fault diagnosis and response circuit, including CPU1, solenoid valve 2 and a display device 3, the display device 3 is connected with an information output port a on the CPU1, and the CPU1 is connected to the solenoid valve 2 through a fault diagnosis unit. The fault diagnosis unit includes a logic operation processing circuit 4 and an integrated chip 5, and the logic operation processing circuit 4 includes a NAND gate chip 41, a NOR gate chip 42 and a comparator 43; on the CPU1 An information output port a, a main control signal output port b, a secondary control signal output port c, and a voltage input port d are provided, the main control signal output port b, the secondary control signal output port c and the input end of the NAND gate chip 41 Signal connection, the output end of the NAND gate chip 41 is signally connected to the input end of the NOR gate chip 42, the output end of the NOR gate chip 42 is signa...

Embodiment 2

[0049] The basic content is the same as that of Example 1, except that:

[0050] The integrated chip 5 is a BTS7236W chip. The display device 3 refers to an instrument, a display or a display screen.

Embodiment 3

[0052] The basic content is the same as that of Example 1, except that:

[0053] The simultaneous feedback of the detection result in the form of voltage means that the integrated chip 5 firstly performs an internal judgment on the detection result, and then simultaneously feeds back the judgment result in the form of voltage.

[0054] The feedback voltage is 5V or 0V, the 5V voltage represents signal 1, and the 0V voltage represents signal 0.

[0055] The CPU1 processes the feedback voltage to determine whether the solenoid valve 2 is faulty means: when the feedback voltage is 0V, the CPU1 determines that the solenoid valve 2 is faulty.

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PUM

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Abstract

The invention discloses a vehicle solenoid valve fault diagnosis addressing circuit, comprising a CPU, a solenoid valve, a logic operation processing circuit, an integrated chip and a display device. The logic operation processing circuit comprises a NAND gate chip, a NOR gate chip and a comparator. In usage, the integrated chip detects the state of the solenoid valve and transmits the detection result to the CPU and the comparator in a voltage form to determine whether the fault exists; if the fault exists, the fault information is outputted to the display device and control of the solenoid valve can be promptly disconnected through a logic operation processing circuit in order to realize the fault addressing. The invention can not only perform the fault diagnosis and addressing on the solenoid valve through the hardware and the software, but is high in accuracy, strong in addressing, high in safety and strong in universality.

Description

technical field [0001] The invention relates to a vehicle fault diagnosis technology, belonging to the technical field of vehicle control, in particular to a fault diagnosis and response circuit of a vehicle solenoid valve and a method for using the same, which are particularly suitable for realizing fault diagnosis and response of a vehicle solenoid valve, and are accurate and accurate. High sex and strong coping ability. Background technique [0002] With the continuous development of automobile electronic control technology, the number of solenoid valves used in automobiles has gradually increased. The application of many solenoid valves not only brings convenience to the electronic control system of the whole vehicle, but also brings certain hidden dangers. If any one of the solenoid valves fails, it will affect the normal operation of the vehicle, and even worse, it will Affect the safe driving of the vehicle. For example, when the vehicle ABS solenoid valve fails, if ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B23/02
CPCG05B23/0259G05B2219/24033
Inventor 张衡蒋立伟张东凯刘伟李艳慧王伟桑璟如李永凯李朝乐
Owner DONGFENG COMML VEHICLE CO LTD
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