Unlock instant, AI-driven research and patent intelligence for your innovation.

Multi-point communication system, method and equipment

A technology for communication equipment and communication systems, which can be used in transmission systems, data exchange through path configuration, electrical components, etc., and can solve problems such as cumbersome use.

Inactive Publication Date: 2012-02-08
CHINA SECURITY & FIRE IOT SENSING CO LTD
View PDF3 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a multi-point communication system, aiming to solve the existing field bus communication system that can realize multi-point communication. When the master communication device communicates with the communication slave device, the communication slave must be set on site The communication network address of the device is a cumbersome problem when using it

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
  • Multi-point communication system, method and equipment
  • Multi-point communication system, method and equipment
  • Multi-point communication system, method and equipment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0048] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0049]In the embodiment of the present invention, the master communication device in the multipoint communication system pre-generates the communication network address assigned to the communication slave device, and after all the communication slave devices are synchronized, sends the communication network address assignment command to the communication slave device, and communicates After the slave device detects the command, it sends the physical address to the master communication device, and the master communication device finds the minimum physical address from these physical addresses, and th...

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 invention is suitable for the technical field of bus communication, and provides a multi-point communication system, method and equipment. In the system, master control communication equipment generates a communication network address distributed to slave communication equipment in advance; after all slave communication equipment are synchronized, a communication network address distribution command is transmitted to the slave communication equipment; after detecting the command, the slave communication equipment transmits physical addresses to the master control communication equipment; the master control communication equipment finds out the minimum physical address from the physical addresses, and distributes the communication network address generated in advance to the slave communication equipment corresponding to the minimum physical address; and then the master control communication equipment and the slave communication equipment can communicate by virtue of the communication network address. According to the invention, the master control communication equipment can dynamically distribute the communication network address to the slave communication equipment, so that the trouble of setting the communication network address is avoided.

Description

technical field [0001] The invention belongs to the technical field of bus communication, and in particular relates to a multipoint communication system, method and equipment. Background technique [0002] There are many fieldbus technologies used in the world today, including simple physical layer interface buses, such as RS485, RS422 and other common buses; there are also buses based on ISO link layer and application layer control protocols, such as CAN, Modbus, Profibus, LONWorks, HART , FF, etc. [0003] Since the RS485 and RS422 buses are only based on the physical layer, they are more flexible to use and can be configured and used according to the actual usage of the equipment manufacturer. However, when multiple chips send data, the bus data will appear indeterminate and will cause damage to the chips. Therefore, multiple chips cannot use the multi-point contention mode to communicate. Moreover, during multipoint communication, each bus device must use the token mod...

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): H04L12/40H04L29/12
Inventor 白征志
Owner CHINA SECURITY & FIRE IOT SENSING CO LTD