Master-slave parallel machine start-stop control circuit

By implementing a master-slave parallel start-stop control circuit, a star connection between master and slave power supplies is achieved, directly transmitting start-stop signals. This solves the problem of inconsistent signal timing and improves the reliability and safety of power supply parallel start-stop control.

CN224520672UActive Publication Date: 2026-07-17SHANDONG AINUO INTELLIGENT INSTR CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SHANDONG AINUO INTELLIGENT INSTR CO LTD
Filing Date
2025-07-22
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

In existing parallel start-stop control methods, it is difficult to guarantee the consistency of signal timing between the master and slave, resulting in inconsistent start-up states, which may cause circulating current or short circuits. Furthermore, the slave power supply operation state is uncontrollable after power failure, affecting reliability.

Method used

A master-slave parallel start-stop control circuit is adopted to realize the star connection of master and slave power supplies. Each slave power supply is directly connected to the master, and the parallel signal is transmitted simultaneously by the master power supply. The start-stop signal is directly transmitted through hardware level signals to avoid the signal delay of chain transmission. A bidirectional differential bus transceiver and an optocoupler isolation chip are used for signal transmission.

Benefits of technology

It achieves consistency in the timing of master-slave start-stop state changes, improves the reliability of power supply parallel start-stop control, avoids signal delay and software communication rate limitations, and is suitable for multi-point transmission in noisy environments.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model provides a kind of master-slave parallel machine start-stop control circuit, the start-stop control signal output end of start-stop signal circuit in host computer power supply is electrically connected with the start-stop control signal input end of signal transmission circuit, the start-stop control signal output end of signal transmission circuit in host computer power supply is electrically connected with the start-stop control signal input end of signal transmission circuit in each slave computer power supply, the start-stop control signal output end of signal transmission circuit in each slave computer power supply is electrically connected with the start-stop control signal input end of start-stop signal circuit in the slave computer power supply, star type connection of master-slave power supply is realized under the premise of not increasing host computer interface, each slave computer power supply is directly connected with host computer, and parallel machine signal can be simultaneously and quickly transmitted to each slave computer power supply by host computer power supply, correspondingly, each slave computer power supply can also directly communicate with host computer, this kind of control mode can achieve the consistency of master-slave computer start-stop state change timing, improve the reliability of power supply parallel machine start-stop control.
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