The invention discloses an adjustable tractor main cable current protection system and a tractor, and the system comprises a Hall current detection circuit which is used for detecting the current of a tractor main cable and converting a current signal into a voltage signal, the Hall current detection circuit is connected with the first input end of the AND gate circuit through the comparator and adjusting circuit and the negation circuit, the power switch circuit is connected with the second input end of the AND gate circuit, the output end of the AND gate circuit is connected with the first input end of the OR gate and protection circuit, and the starting signal input circuit is connected with the second input end of the OR gate and protection circuit. The output end of the OR gate and protection circuit is connected with the main switch, and the output end of the OR gate and protection circuit is connected with the second input end of the AND gate circuit through the feedback circuit. Current protection of the tractor main cable can be effectively achieved, the number of devices is small, and cost is low; by building an analog digital chip, the reliability is high; the switch controls power-on and power-off, and operation is simple and convenient; the protection current is adjustable, and the matching performance is good.
本发明公开了一种可调式拖拉机主线缆电流保护系统及拖拉机,系统包括:用于检测拖拉机主线缆电流且将电流信号转化为电压信号的霍尔电流检测电路,霍尔电流检测电路通过比较器及调节电路和取反电路连接与门电路的第一输入端,电源开关电路连接与门电路的第二输入端,与门电路的输出端连接或门及保护电路的第一输入端,启动信号输入电路连接或门及保护电路的第二输入端,或门及保护电路的输出端与总开关连接,且或门及保护电路的输出端通过反馈电路连接与门电路的第二输入端。本发明可有效实现拖拉机主线缆的电流保护,且器件较少,成本低;通过模拟数字芯片搭建,可靠性高;开关控制上电断电,操作简单方便;保护电流可调整,匹配性好。
Adjustable tractor main cable current protection system and tractor
可调式拖拉机主线缆电流保护系统及拖拉机
2022-07-12
Patent
Electronic Resource
Chinese
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