Patent ID: 11860243
Assignee: HUAWEI DIGITAL POWER TECHNOLOGIES CO., LTD.
Field: Transport (Mechanical engineering)
Classification: CPC G  B  Y | IPC B  G

Claim 13:
14. A plug status detection circuit comprising:
a first resistor, wherein a first terminal of the first resistor is configured to inject a startup voltage, and after the startup voltage is injected, a level of a detection point of the plug status detection circuit is used to indicate a plug status;
a second resistor, wherein a first terminal of the second resistor is coupled to a second terminal of the first resistor, and a second terminal of the second resistor is coupled to the detection point; and
a switching transistor, wherein a first terminal of the switching transistor outputs a wake-up signal when the switching transistor is switched on, a second terminal of the switching transistor is coupled to the second terminal of the first resistor, a third terminal of the switching transistor is coupled to the first terminal of the first resistor, and the wake-up signal is used to trigger a CPU to collect the level of the detection point.