Multi-device connection system

Abstract

The invention relates to a multi-device connection system, which comprises master control device and a plurality of subsidiary devices, wherein the master control device and the plurality of subsidiary devices both comprise a dip switch, a bus controller and a microcontroller connected with the dip switch and the bus controller; the dip switch is used for setting an address of the device; the bus controllers of the master control device and each subsidiary control device are connected to a bus; the microcontroller judges whether the device is the master control device or the subsidiary control device according to the address set by the connected dip switch, if the device is the master control device, the subsidiary device is monitored through the bus, and if the device is the subsidiary control device, device information is transmitted to the master control device by the bus.

Description

technical field [0001] The invention relates to a multi-device connection system. Background technique [0002] At present, in addition to configuring network servers, telecommunication switches, network switches or network routers inside the server racks of general network and telecommunication equipment rooms, there are often single-phase or three-phase AC power backup systems such as UPS (Uninterrupted Power Supply, uninterrupted power supply), PDU (Power Distribution Unit, power distribution management system) or environmental power monitoring device, etc. However, the AC power backup system has limited output terminals due to the limitation of the total input capacity and the shape of the rack, so it is often necessary to use multiple One AC power backup system to meet the power supply of equipment in a single rack, and because there are often multiple AC power backup systems inside the vertical rack, it is necessary to integrate the AC power of each power supply device...

AI Technical Summary

Problems solved by technology

[0003] Currently on the market, the AC power backup system that can connect multiple devices uses the RS-485 serial interface to communicate between the devices. The method of connecting the devices in series is: select the first device as the master device , the rest of the devices are slave devices, connect the slave devices in sequence behind the master device, and connect a terminal resistor in series before the master device and behind the last slave device to mark the start and end of the network. After each device is connected in series, turn on the power switch, write a single address to the device through a serial communication interface RS-232, and then connect the next device in series, so that each device can be connected through the serial communication interface RS-485 communicates with each other or transmits AC power information. This serial connection method can only connect one slave control device in series at a time, and the serial connection process is very cumbersome.

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