Patent ID: 11933452
Assignee: JINGDONG TECHNOLOGY INFORMATION TECHNOLOGY CO., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC F  G  H | IPC F  G  H

Claim 12:
13. The detection device according to claim 12, wherein the safety redundant control circuit comprises:
a second distance measuring sensor, arranged at the top of the lifting platform;
wherein the second processor is further configured to obtain a second distance measurement instruction, and control the second distance measuring sensor to measure the second distance between the top of the lifting platform and the obstacle according to the second distance measurement instruction during the process of the lifting platform rising to the target position;
a comparator, wherein one end of the comparator is connected to the second distance measuring sensor, for comparing an analog voltage corresponding to the second distance with a reference voltage to obtain a comparison result; the reference voltage has an associated relationship with the target distance;
an amplifying circuit, wherein the amplifying circuit is connected to the other end of the comparator, and the amplifying circuit is configured to amplify the comparison result to obtain an amplification result; generate a power-off instruction when it is determined that the amplification result indicates that the second distance is smaller than the target distance, and control the power supply module to stop supplying power for the lifting motor drive circuit according to the power-off instruction.