LAN-Based Master/Slave AC/DC Power Supply Control

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Solution Overview

Problem

Conventional AC/DC power supply master/slave control systems using RS-232, RS-485, or CAN-bus interfaces experience slow signal transmission, leading to delayed responses and complex wiring configurations due to the need for multiple USB ports and interfaces.

Innovation Solution

A master/slave control system utilizing a local area network (LAN) with high-speed transmission interfaces, such as Ethernet, to connect the master and slave devices, eliminating the need for traditional series data communication interfaces and simplifying configurations and wiring.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Speed

If RS-232 or RS-485 series data communication interface is used to connect master device and slave device, then the connection can be established, but the signal transmission speed is slow (less than 1 Mbit) and the master/slave control cannot respond timely

Engineering Contradiction:

Improvesignal transmission speedVSAvoidresponse time

Core Design Contradiction:

SpeedVSLoss of time

Solution Approach 1:

The patent changes the communication interface parameter from traditional RS-232/RS-485 (serial communication) to LAN Ethernet interface (network communication), transforming the transmission medium and protocol to achieve higher transmission speeds and timely response

Inventive Principle:

Principle #35Parameter changes

2Ease of operation

If RS-232 or RS-485 series data communication interface or controller area network is used for master/slave control, then the control function is achieved, but various USBs and signal transmission ports are required, causing many connecting configurations and complicated wiring

Engineering Contradiction:

Improveconfiguration simplicityVSAvoidwiring complexity

Core Design Contradiction:

Ease of operationVSDevice complexity

Solution Approach 1:

The patent applies universality by using the LAN Ethernet interface for multiple functions: data communication, control signal transmission, and configuration management, eliminating the need for separate USB ports and signal transmission ports, thereby simplifying the overall system configuration and wiring

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The patent merges multiple separate interfaces (USB ports, signal transmission ports, data communication interfaces) into a single LAN Ethernet interface, consolidating the connection between master and slave devices into one unified interface that handles all communication needs

Inventive Principle:

Principle #5Merging (Combining)

Data Source

PatentUS9621066B2Master/slave control system of AC/DC power supply

Publication Date: 2017.04.11 CHYNG HONG ELECTRONIC CO LTD

AI summary

A master/slave control system of an AC/DC power supply includes a master device. The master device is able to supply AC and DC power. The master device is connected with a plurality of slave devices through a plurality of local area network transmission interfaces. The slave devices are able to supply AC and DC power. Through the local area network transmission interfaces, a control signal can be transmitted fast for the mater device and slave devices to carry out a master/slave control. The signal transmission efficiency of the master/slave control can be enhanced greatly, so that the master/slave control is more fast and prompt. The present invention avoids the arrangement of the traditional series data communication interface and the controller area network, and simplifies the configuration and wiring of the master device and the slave devices.