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rv water tank level gauge
The automobile instrument is composed of various instruments and indicators, especially the warning light alarm for the driver, which provides the driver with the required automobile operation parameter information. According to the working principle of automobile instruments, they can be roughly divided into three generations. The first generation of automobile instrument is mechanical movement meter; The second generation of automotive instruments is called electrical instruments; The third generation is all digital automobile instrument. It is a networked and intelligent instrument with more powerful functions, richer display contents and simpler harness links.
Most automotive instruments are the third generation instruments, which can drive the base meter pointer through stepping motor,You can also use the LCD screen to directly display graphic or text information. At the same time, it also has an intelligent processing unit, which can interact with other control units of the car.
Optoelectronic display instrument
The function of automobile instrument is to obtain the required data and display it in an appropriate way. The previous instruments were generally limited to 3 ~ 4 quantity displays and 4 ~ 5 warning functions. Now the new instruments have about 15 quantity displays and about 40 warning monitoring functions. Different information consists of different acquisition methods and display methods. At present, there are three main acquisition methods of new instrument information: transmission through body bus; Conversion through a / D sampling; Obtained by IO status change.
Recreational vehicle (RV) water tank level gauge,include a main shell and a circuit board, the back of the circuit board is provided with an MCU control chip, a buzzer and a relay, the front of the circuit board is provided with a display screen, the display screen includes a voltage display screen, a water quantity display screen and a water temperature display screen, the front of the circuit board is also provided with function keys, indicator lights, the display screen, function keys and indicator lights are clamped on the surface of the main shell, and also includes a sensor probe, The sensor probe is provided with a water level sensor and a temperature sensor, and the input end of the MCU control chip is provided with a double interface The touring car water temperature and water level gauge of the utility model integrates the display voltage, the water temperature and water are integrated, and has the temperature monitoring function while detecting the water level. The water temperature and water level of the two rented liquid tanks are displayed respectively through the function key switching display screen. When the battery voltage and water level are too high or too low, it will give an alarm through the buzzer and indicator light, and has the antifreeze function.
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