System and method for starting power electromagnetic valve in successive approximation mode

The invention relates to the technical field of electronics, and discloses a system and method for starting a power electromagnetic valve in a successive approximation mode, and the system comprises a controller, a high-voltage driving power supply, a DAC chip, an ADC chip, a constant-current control circuit, and a sampling module. The controller is connected with the constant current control circuit through the DAC chip, one input end of the constant current control circuit is connected with the power electromagnetic valve, and the other output end of the constant current control circuit is connected with the controller through the sampling module and the ADC chip in sequence. The use failure rate of the system is reduced, and the service life of the system is prolonged. 本发明涉及电子技术领域，公开了一种使用逐步逼近方式启动功率电磁阀的系统及方法，包括控制器、高压驱动电源、DAC芯片、ADC芯片、恒流控制电路和采样模块，所述控制器通过所述高压驱动电源与功率电磁阀连接，所述控制器通过所述DAC芯片与所述恒流控制电路连接，所述恒流控制电路的其中一个输入端与所述功率电磁阀连接，所述恒流控制电路的另一个输出端依次通过所述采样模块、ADC芯片与所述控制器连接。降低系统的使用故障率，延长系统的使用寿命。