Sensor circuit board support

Abstract

The invention discloses a sensor circuit board support. A circuit board and a pressure sensor are inserted into a support body. The pressure sensor is hermetically fixed in the bracket body through asealing structure; the circuit board is connected with the pressure sensor and the liquid level sensor through input signal lines and connected with the vehicle-mounted ECU through output signal lines. During working, the circuit board receives signals from the pressure sensor and the liquid level sensor, processes the signals and outputs the signals through the same output wire harness. Accordingto the invention, the pressure sensor for detecting differential pressure signals inside and outside the crankcase and the circuit board of the lubricating oil liquid level sensor are integrated in the same bracket body; the installation space of the pressure sensor is saved; compared with the prior art, the requirement for the internal space of the whole machine is lowered. Meanwhile, design links and structural improvements such as installation positions of corresponding parts in the whole machine and sealing structures matched with the installation positions are reduced, the design, production and part cost is lowered, and the possibility of rigidity and strength degradation of internal parts of the whole machine is also lowered.

Description

technical field [0001] The invention relates to the technical field of sensor installation, in particular to a bracket integrating a crankcase pressure sensor and a lubricating oil level sensor circuit board. Background technique [0002] The health status of the automobile engine needs to be detected by a series of sensors, and some sensors (such as lubricating oil level sensor, crankcase pressure sensor, etc.) are limited by the voltage level of their components and cannot be directly connected to the vehicle ECU (electronic Control unit) to take power directly from the on-board ECU. It needs to be equipped with an independent circuit board and installation device with a control system and a power supply system to convert the voltage of the on-board ECU and then supply it to the sensor. [0003] The lubricating oil level and crankcase pressure of the engine need to be detected by the lubricating oil level sensor and the crankcase pressure sensor. Both the lubricating oil l...

AI Technical Summary

Problems solved by technology

[0004] The applicant independently designs and installs the above-mentioned existing lubricating oil level sensor, crankcase pressure sensor and circuit board installation device, which requires a large space inside the whole machine, and the cost of design, production and parts is relatively high, and disassembly and assembly are very difficult. Difficulty, difficulty in post-maintenance and other shortcomings, provide a sensor circuit board bracket with a reasonable structure, the crankcase pressure sensor is integrated on the lubricating oil level sensor circuit board installation device, reduce the requirements for the internal installation space of the whole machine, and reduce the design , production, and parts costs, reducing the difficulty of disassembly and maintenance

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