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Sensor circuit with fault self-detection and self-adjustment functions

A sensor circuit and self-detection technology, applied in the field of sensors, can solve the problems of poor anti-interference ability of sensors, and achieve the effect of enhancing anti-interference ability.

Active Publication Date: 2018-03-27
NINGBO CRRC TIMES TRANSDUCER TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The abnormal detection circuit can only realize abnormal detection and needs to be adjusted by other means. If it is used in a sensor, the anti-interference ability of the corresponding sensor is poor

Method used

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  • Sensor circuit with fault self-detection and self-adjustment functions

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Embodiment Construction

[0016] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0017] Such as figure 1 As shown, the sensor circuit with self-detection fault and self-adjustment functions in this embodiment includes a signal processing circuit 1 , a fault prompt circuit 2 and a fault adjustment circuit 3 .

[0018] When the sensor detects the relevant signal, in order to transmit it to the controller for processing, it usually processes the collected primary signal internally, such as amplifying the primary signal through a transformer before outputting it.

[0019] The sensor circuit with self-detection fault and self-adjustment function in this embodiment can realize the detection of sensor signal faults by processing the amplified signal, and can also independently adjust some small faults to restore the sensor signal. to the normal state to improve the anti-interference ability of the sensor.

[0020] The signal pr...

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Abstract

The invention relates to a sensor circuit with fault self-detection and self-adjustment functions. The sensor circuit comprises a signal processing circuit for processing a detection signal of a sensor, a fault prompt circuit for detecting a fault of the sensor detection signal and prompting the fault, and a fault adjustment circuit for detecting the fault of the sensor signal and capable of adjusting the sensor detection signal to a normal state. The fault prompt circuit is connected with an output end of the signal processing circuit. The fault adjustment circuit is connected with an outputend of the signal processing circuit. The sensor circuit with the fault self-detection and self-adjustment functions in the invention can also feed back part of the abnormality in addition to the abnormality information of the sensor, so that the sensor can be restored to the normal working state, and has a certain effect on enhancing the anti-interference ability of the sensor. In the invention,the sensor can actively feed back abnormal information, is helpful for tracing the root cause of the abnormal situation of a system product, and is convenient for finding the cause of the fault faster.

Description

technical field [0001] The invention relates to the technical field of sensors, in particular to a sensor circuit with self-detection fault and self-regulation functions. Background technique [0002] As a signal detection device, the sensor is widely used in various fields, and the faults in the working process of the sensor are usually detected passively by the system. For example, the Chinese invention patent application "abnormality detection circuit" with the publication number CN101110569A (application number 200710137102.8), wherein the disclosed abnormality detection circuit monitors the power supply voltage (Vcc), and outputs a predetermined level of abnormality detection when the power supply voltage (Vcc) drops Signal (Sabn). The source of the detection transistor ( M10 ), which is a P-channel MOSFET, is connected to a power supply line (Lvcc) to which a power supply voltage (Vcc) to be monitored is applied. A detection resistor (R10) as an impedance element is ...

Claims

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Application Information

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IPC IPC(8): G01D18/00
CPCG01D18/00
Inventor 陈浩倪大成郑华雄任浩郭庆丰王文武胡冬青王辰玥王臻李敏
Owner NINGBO CRRC TIMES TRANSDUCER TECH CO LTD