Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

RS485 bus/node protector and method thereof

A technology of RS485 and protector, which is applied in RS485 bus/node protector and its field, can solve problems such as heavy workload, cumbersome, equipment not working normally, and achieve the effect of guaranteeing normal operation

Inactive Publication Date: 2012-12-19
GUANGZHOU DUOYUE INFORMATION TECH
View PDF4 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] When the RS485 fails, the maintenance / repair personnel need to detect and eliminate each RS485 device one by one, which is not only cumbersome and heavy workload, but also the problem of one device causes other devices on the network to fail to work normally, and each branch device needs to be checked separately Carry out maintenance and find the faulty device before restarting the operation of the device on the bus
[0004] It is under this demand that the invention was born, and there is no similar product in the market

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • RS485 bus/node protector and method thereof
  • RS485 bus/node protector and method thereof
  • RS485 bus/node protector and method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0029] The RS485 layout network controls the normal operation of each 485 device, and the RS485 bus / node protector provides an independent protection mechanism at the node of each 485 device to prevent any device in the network from failing. Respond to protect other devices in the network from being affected.

[0030] Each device in the RS485 network is equipped with an RS485 bus / node protector to monitor the working status of the 485 device in real time, using millisecond-level bus detection and quick response. When the 485 equipment is abnormal, check the abnormality for 5 times in a row, immediately and automatically cut off the connection between the current equipment and the bus, and protect the 485 bus from short circuit due to equipment abnormality. When the fault is eliminated, the connection of the device will be automatically restored.

[0031] The RS485 bus / node protector adopts industrial-grade design inside, the maximum power consumption is less than 60mW, suppor...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The embodiment of the invention discloses a method and a device for an RS485 bus / node protector. The protector is used for protecting secure connection between a subordinate bus and a superior bus and secure connection between equipment and the bus, and an independent protection mechanism is provided. When the protector is connected between a node and the bus or between the subordinate bus and the superior bus, if the connected node and the subordinate bus connected with the protector fail (short-circuit, damage or abnormality), the bus with the node or the superior bus is not affected. In addition, the accuracy of the line sequence of an RS485 bus of equipment can be automatically detected, so that a reversely connected bus is automatically overturned to an accurate line sequence. According to the protector, an automatic protection function, an automatic starting function and an automatic overturning function are realized.

Description

technical field [0001] The invention designs and develops the protection equipment for the widely used RS485 bus / node in the field of electronic information technology. Connect it between the RS485 device and the bus, or between the lower-level bus and the upper-level bus, to protect the level bus where the device is located from being unable to communicate normally due to the RS485 abnormality or short circuit at the device end, and also to protect the previous level RS485 bus The damage or short circuit will not affect the normal communication of the last RS485 bus. Background technique [0002] In the RS485 multi-level bus system or single-level bus system, if a device in the single-level bus system is short-circuited or fails, the single-level cannot communicate normally due to the differential transmission characteristics of RS485; A device in the system is short-circuited or fails, resulting in the failure of normal communication in the multi-level bus system. The em...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): H02H3/00H02H3/08H02H9/04G05B19/042
Inventor 胡伟沈思达
Owner GUANGZHOU DUOYUE INFORMATION TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products