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fuel level gauge oil pressure gauge water temp gauge
The instrument panel is the interactive interface of a car, providing the driver with the necessary information such as car operating parameters, faults, mileage, etc. It is an essential component of every car and an intelligent auxiliary system that integrates six functions: sensation, recognition, situation analysis, information library, adaptation, and self-control to display various parameters during driving and ensure safe driving. 1. Overview: There are two types of fuel and water temperature gauges: pointer type and segment code type. The pointer type generally indicates scales such as "0", "1/4", "1/2", "3/4", and "1"; The segment code display adopts LCD pen segment display, which can be displayed with multiple symbols. 1.1 Principle of pointer type and segment code type: The structure of fuel gauge sensors is mostly a float type structure, which is connected by a mechanism equipped with a sliding resistor driven by a float that automatically moves with the displacement of the liquid level. When the liquid level in the fuel tank changes in height, the position of the float will change. Different resistance values will be output on the sliding resistor to determine the height of the liquid level, And drive the fuel gauge to indicate the corresponding position.
Fuel level oil pressure water temp gauge：The electronic fuel gauge mainly inputs sensor resistance changes to the A/D port of the microprocessor through the sampling circuit to generate different sampling signals. After A/D conversion, it controls the driving mechanism through the preset system software processing to indicate the fuel gauge. Similarly, the output signal of the water temperature sensor is also a resistance value, with an internal thermistor that outputs different resistance values at different temperatures. The water temperature meter inputs sensor resistance changes to the A/D port of the microprocessor through the sampling circuit to generate different sampling signals. After A/D conversion, the driver is controlled through the preset system software processing, so as to indicate the water temperature meter. The driving mechanism of the pointer type fuel gauge and water temperature gauge is an electric motor. By controlling the electric motor, the pointer rotates at different angles to indicate the fuel gauge and water temperature gauge. The segment code type fuel gauge and water temperature gauge are driven by a segment code screen. By controlling the segment code, the segment code screen indicates different segment codes, indicating the fuel gauge and water temperature gauge.
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