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SENT interface sensor fault diagnosis method, device and system

A technology for sensor faults and diagnosis methods, applied in instruments and other directions, can solve problems such as low reliability, and achieve the effect of improving reliability and accuracy

Pending Publication Date: 2022-04-12
SINO TRUK JINAN POWER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problems existing in the prior art, the present invention innovatively proposes a SENT interface sensor fault diagnosis method, device and system, which effectively solves the problem of low reliability of the SENT interface sensor fault diagnosis caused by the prior art, and effectively improves the Reliability and Accuracy of SENT Interface Sensor Fault Diagnosis

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  • SENT interface sensor fault diagnosis method, device and system

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Embodiment 1

[0052] Such as figure 1 As shown, the invention provides a kind of SENT interface sensor fault diagnosis method, comprising:

[0053] S1. Obtain the analyzed state communication segment data of the SENT interface sensor, the collected parameter data, and the operating data of the object to be collected, and perform fault diagnosis when the preset fault diagnosis enabling conditions are met;

[0054] S2. Preliminarily determine whether the first type of failure exists in the SENT interface sensor according to the state communication segment data of the SENT interface sensor;

[0055] S3. Preliminarily determine whether there is a second type of failure in the SENT interface sensor according to the operating data of the object to be collected and the collected parameter data;

[0056] S4, judging whether the first type of fault is greater than the corresponding threshold of the first preset time period, if the judgment result is yes, then execute step S5; if the judgment result...

Embodiment 2

[0111] Such as Figure 9 As shown, the technical solution of the present invention also provides a kind of SENT interface sensor fault diagnosis device, comprising:

[0112] The acquisition unit 101 acquires the analyzed state communication section data of the SENT interface sensor, the acquisition parameter data, and the operation data of the object to be collected, and performs fault diagnosis when the preset fault diagnosis enabling conditions are met;

[0113] The first determining unit 102 initially determines whether the SENT interface sensor has a first type of failure according to the state communication section data of the SENT interface sensor;

[0114] The second determination unit 103 initially determines whether the second type of failure exists in the SENT interface sensor according to the operating data of the object to be collected and the collected parameter data;

[0115] The third determining unit 104, if the duration of the first type of fault or the secon...

Embodiment 3

[0121] Such as Figure 10-Figure 11 As shown, the technical solution of the present invention also provides a kind of SENT interface sensor fault diagnosis system, comprising: fault diagnosis module 201, SENT interface sensor 202, SENT signal acquisition module 203, communication module 204 and upper computer 205, SENT signal acquisition module 203 The input end of the SENT interface sensor 202 is connected, the output end of the SENT signal acquisition module 203 is connected with the input end of the fault diagnosis module 201, and the fault diagnosis module 201 is connected with the host computer 205 through the communication module 204 to obtain the object to be collected The fault diagnosis module 201 is used to run a SENT interface sensor fault diagnosis method in Embodiment 1 according to the data sent by the SENT interface sensor 202 and the operating data of the object to be collected, and perform fault diagnosis on the SENT interface sensor.

[0122] Further, a SENT ...

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Abstract

The invention provides a SENT interface sensor fault diagnosis method, which comprises the steps of obtaining analyzed state communication section data, acquisition parameter data and to-be-acquired object operation data of a SENT interface sensor, and performing fault diagnosis when a preset fault diagnosis enabling condition is met; preliminarily determining whether the SENT interface sensor has a first type of fault according to the state communication section data of the SENT interface sensor; preliminarily determining whether the SENT interface sensor has a second type of fault according to the to-be-collected object operation data and the collection parameter data; if the duration time period of the first type of fault or the second type of fault is larger than the corresponding preset time period threshold value, the corresponding first type of fault or the second type of fault is confirmed, the invention further provides a SENT interface sensor fault diagnosis device and system, and the reliability and the accuracy of SENT interface sensor fault diagnosis are effectively improved.

Description

technical field [0001] The invention relates to the field of automotive SENT interface sensors, in particular to a fault diagnosis method, device and system for a SENT interface sensor. Background technique [0002] With the development of automobile electronic control technology, the number of sensors used in automobiles will inevitably increase gradually, and the increase of sensors will bring challenges such as the increase of system cost, the complexity of sensor wiring and electronic control unit. In order to meet the needs of low-cost advanced sensors, the industry has developed a SENT (Single Edge Nibble Transmission) protocol using a digital interface. The SENT protocol is a new standard SAE J2716 for communication between automotive sensors and ECUs introduced by the American Society of Motor Vehicle Engineers SAE. Compared with AD and PWM output, it has better EMC characteristics and saves wiring harnesses and pin connectors, and can transmit faults. The code, whi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01D18/00
Inventor 刘永春齐善东高发廷郭庆波
Owner SINO TRUK JINAN POWER