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本汽车空调温度自控装置能在车内温度上升到预定值时,延迟一段时间后起动制冷装置工作,使车内温度逐渐下降;而当温度下降到某一预定值时,又会自动关断致冷装置,使车内温度始终恒定在人们所需要的某一预置区间,让驾驶员和乘客舒服地安全乘车。该温度自控装置的控制范围为0～80℃,具有电路简单,取材方便,无机械触点,性能可靠,实用安全等特点,适全于各种空调车辆安装使用。温度自控装置的电路如图1所示。它主要由温度检测、触发延时和电子开关等电路组成。其中RP、R_1和 RT 组成温度检测电路,温度传感器 RT 是 NTC 负温度系数热敏电阻,随温度的升高,
The car air-conditioning temperature control device in the car when the temperature rises to a predetermined value, delay a period of time after starting the cooling device, the car gradually decreased temperature; and when the temperature dropped to a predetermined value, it will automatically shut down Cold device, so that the car temperature is always constant in people’s need for a preset interval, so that drivers and passengers comfortable and safe ride. The temperature control device of the control range of 0 ~ 80 ℃, with a simple circuit, drawn convenient, no mechanical contacts, reliable performance, practical and safe, suitable for a variety of air-conditioned vehicles installed to use. Temperature control device circuit shown in Figure 1. It is mainly composed of temperature detection, trigger delay and electronic switches and other circuits. Which RP, R_1 and RT constitute the temperature detection circuit, temperature sensor RT is NTC negative temperature coefficient thermistor, with the temperature rise,