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oil pressure sensor meaning
Auto parts. The automobile oil pressure sensor is an important device for detecting the oil pressure of the vehicle engine. The detected data can help control the normal operation of the engine.
The oil pressure sensor is installed on the main oil channel of the engine. When the engine is running, the pressure measuring device detects the oil pressure, converts the pressure signal into an electrical signal and sends it to the signal processing circuit. After voltage amplification and current amplification, the amplified pressure signal is connected to the oil pressure indicator through the signal line, and changes the ratio of the current passed by the two coils inside the oil pressure indicator, thus indicating the oil pressure of the engine. The pressure signal amplified by voltage and current is also compared with the alarm voltage set in the alarm circuit. When it is lower than the alarm voltage, the alarm circuit will output the alarm signal and turn on the alarm lamp through the alarm line. The wiring mode of the electronic oil pressure sensor is completely the same as that of the traditional mechanical sensor. It can replace the mechanical pressure sensor and directly connect with the automobile oil pressure indicator and the low pressure alarm lamp to indicate the oil pressure of the diesel engine and provide the low pressure alarm signal. Compared with the traditional piezoresistive oil pressure sensor, the electronic automotive oil pressure sensor has the advantages of no mechanical moving parts (i.e., no contact), high accuracy, high reliability, long service life, and meets the requirements of the development of automotive electronics. Because the working environment of the automobile is very bad, the requirements for the sensor are very strict. In the design of the electronic automobile oil force sensor, it is not only necessary to select the pressure measuring device with high temperature resistance, corrosion resistance and high accuracy, and select the components with reliable performance and wide working temperature range, but also need to take anti-interference measures in the circuit to improve the reliability of the sensor.
The automobile is a complex system, in which the electronic information system has become an indispensable control system. The application demand of electronic sensors is actually developed under the demand of electronic control. Therefore, the compatibility of other control circuits has become an important basis for improving its use effect. At the same time, electronic sensor is also an active device, which must be supported by power supply. So how to integrate it into the whole electronic circuit is also a problem that needs to be considered. Therefore, the development and improvement direction of electronic oil pressure sensor also includes the improvement of its compatibility.
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