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A sensor abnormal detection method and device

An anomaly detection and sensor technology, applied in the field of vehicles, can solve the problems of inability to collect battery data and the inability of sensors to accurately collect them, and achieve the effect of improving safety.

Active Publication Date: 2021-12-03
NEUSOFT REACH AUTOMOBILE TECH (SHENYANG) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, when the internal sensor of the battery pack is abnormal, it may cause the sensor to be unable to accurately collect (or even fail to collect) the battery data of the battery pack, causing the BMS to fail due to receiving wrong battery data (or even unable to receive battery data). abnormal

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  • A sensor abnormal detection method and device

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Embodiment approach

[0195] As an implementation manner, S24 may specifically include steps S241-S242:

[0196] S241: Making a difference between the current data of the target sensor and the predicted data of the target sensor to obtain a first difference.

[0197] S242: If the first difference reaches a first threshold, determine that the sensor is abnormal; if the first difference is lower than the first threshold, determine that the sensor is normal.

[0198] Wherein, the first threshold can be set in advance, especially according to the application scenario. For example, the first threshold may be 0, or other values, which are not specifically limited in the present application.

[0199] The above is the specific implementation manner of step S24.

[0200] It should be noted that the execution order of steps S21-S24 is not limited in the embodiment of the present application. As an example, steps S21, S22, S23 and S24 may be performed in a preset order, wherein the preset order may be set ...

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Abstract

The present application discloses a sensor abnormality detection method and device. After obtaining the current data of the target sensor inside the battery pack of the target vehicle, the current data of the target sensor is compared with the target data to determine whether the target sensor is abnormal. Among them, since the target data can include the historical data of the target sensor, the current data of other sensors of the same type inside the battery pack of the target vehicle, the data of the same type of sensor inside the battery pack of other vehicles of the same type, and the prediction data of the target sensor, etc., can characterize the target At least one of the data of the normal data of the sensor, thus, comparing the target data and the current data of the target sensor, the gap between the current data of the target sensor and the normal data of the target sensor can be determined, so that the gap can be accurately determined according to the gap Whether the target sensor is abnormal, so that the abnormal sensor can be processed in time, and the safety of the battery pack is improved.

Description

technical field [0001] The present application relates to the technical field of vehicles, in particular to a sensor abnormality detection method and device. Background technique [0002] With the popularity of electric vehicles, the detection of battery pack anomalies is becoming more and more important. There are many types of battery pack abnormalities, among which, the abnormality of the internal sensor of the battery pack is an important battery pack abnormality. [0003] The sensors are distributed inside the battery pack and can be used to collect battery data of the battery pack, and send the collected battery data to the battery management system (battery management system, BMS), so that the BMS can analyze and process the received battery data. However, when the internal sensor of the battery pack is abnormal, it may cause the sensor to be unable to accurately collect (or even fail to collect) the battery data of the battery pack, causing the BMS to fail due to re...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01D18/00
CPCG01D18/00
Inventor 郭毅高雁飞王尧峰
Owner NEUSOFT REACH AUTOMOBILE TECH (SHENYANG) CO LTD