The invention discloses a signal detection circuit and a charging pile. The signal detection circuit comprises a signal input end, an insertion detection module, a limit value detection module and a controller. The insertion detection module comprises a first comparison circuit and a first isolation circuit, and the first comparison circuit and the first isolation circuit are arranged between the signal input end and the controller in series and used for outputting an insertion detection signal to the controller according to the connection state of the signal input end and target equipment; the limit value detection module comprises a second comparison circuit and a second isolation circuit. The insertion detection module and the limit value detection module are arranged in the signal detection circuit, the physical connection condition and the electric connection state can be detected respectively, the detection result is more accurate and clear, the isolation circuit is further arranged in the signal detection circuit for signal isolation, electromagnetic interference can be effectively resisted, and the stability of detection signals is guaranteed.
本发明公开了一种信号检测电路及充电桩,该信号检测电路包括信号输入端、插入检测模块、限值检测模块和控制器;所述插入检测模块包括第一比较电路和第一隔离电路,所述第一比较电路和第一隔离电路,串联设置在所述信号输入端和所述控制器之间,用于根据所述信号输入端与目标设备的连接状态,向所述控制器输出插入检测信号;所述限值检测模块包括第二比较电路和第二隔离电路。该信号检测电路中设置了插入检测模块和限值检测模块,能够对物理连接情况和电连接状态进行分别检测,使检测结果更为精准分明,该信号检测电路中还设置了隔离电路进行信号隔离,可以有效抵抗电磁干扰,保证了检测信号的稳定性。
Signal detection circuit and charging pile
信号检测电路及充电桩
2025-02-18
Patent
Electronic Resource
Chinese
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