Control circuit for strong suction device of CRH1 type vehicle Faiviley air conditioner

The invention discloses a control circuit of a CRH1 type vehicle method Velley air conditioner strong suction device, which comprises an STM32 single-chip microcomputer, the STM32 single-chip microcomputer is used as a master controller to control the conduction or cut-off of a PMOS (P-channel Metal Oxide Semiconductor) tube so as to realize output control, an ohm sampling resistor is adopted at a load detection end, voltage is acquired through an analog-digital converter of the STM32 single-chip microcomputer after the voltage is amplified by an operational amplifier, and whether current flows through the load end is judged through the acquisition end voltage. According to the control circuit of the CRH1 type vehicle Faiveli air conditioner strong suction device, complex logic control and fault detection are achieved through an STM32 single-chip microcomputer, and the control accuracy is improved; a circuit protection design is adopted, and a TVS tube protection circuit is adopted to cope with high-voltage s