1-wire bus device id-based communication protocol

A communication protocol and first-line technology, applied in electrical components, digital transmission systems, transmission systems, etc., can solve problems such as numerous commands, disordered serial numbers, and monitoring errors, and achieve strict information correspondence, reliable identification, and simple protocols.

Active Publication Date: 2010-01-13
BEIJING CHINA COAL MINE ENG CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this communication protocol, the ID code of the first-line device and its monitoring information should be transmitted separately in response to different commands. Trouble, what's more serious is that when the monitoring module is running, if individual first-line devices "get lost", the serial number will be disordered
This makes the sequence number-based communication protocol cause errors in the subordinate correspondence of monitoring information, resulting in monitoring fallacies

Method used

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  • 1-wire bus device id-based communication protocol

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specific Embodiment

[0059]Take DS18B20, the most widely used first-line device in the first-line bus monitoring application, as an example. It is a temperature sensor device that can directly convert the ambient temperature it feels into digital quantities. When leaving the factory, each one-line device is etched with a unique set of 8-byte 64-bit binary codes to identify each one-line device. Access and control of one-line devices can be realized through one-line bus protocol.

[0060] In the application, in order to realize the temperature monitoring of several positions in a certain area, one or more temperature measuring cables can be made, that is, the first-line temperature sensing element is installed on the first-line bus cable, and when the bus cable is laid, the first-line temperature sensor The sensing element is exactly located at the desired monitoring position, and then one end of the temperature measurement cable is connected to the one-line bus interface of the monitoring module. ...

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Abstract

The invention discloses a 1-wire bus device ID-based communication protocol, which comprises a monitoring module, an upper computer and a 1-wire bus network, wherein the monitoring module transmits acquired monitoring information to the upper computer through an established communication protocol according to the command of the upper computer; and the upper computer can access and control the monitoring module by sending a command. The content of the protocol comprises that: the upper computer sends a monitoring information reading command and a response format of the monitoring module; the upper computer sends an information reading command and a response format of the monitoring module; and the upper computer sends a configuration and control command and a response format of the monitoring module to the monitoring module. In the 1-wire bus device ID-based communication protocol, a 1-wire bus device ID code and monitoring information are bound to be transmitted in the response made by the monitoring module to the monitoring information reading command sent by the upper computer to allow the upper computer to directly use the ID code to determine a1-wire device to which the attached monitoring information belongs, so the 1-wire bus device ID-based communication protocol ensures the reliable recognition of the monitoring information and has the advantages of simplicity, high efficiency and strict information matching.

Description

technical field [0001] The invention relates to a communication protocol, in particular to a communication protocol based on a one-line bus device to realize access and control of monitoring information through an ID code. It belongs to the technical field of communication protocols for first-line device monitoring. Background technique [0002] One-line bus refers to a serial data bus with only one signal line. One-line bus technology can use this bus to realize access control to several one-line devices connected to this bus. One-line devices follow the one-line bus protocol and implement certain device for monitoring functions. [0003] Each first-line device is etched with a unique set of 8-byte 64-bit binary code when it leaves the factory, which is used to identify and distinguish each first-line device, which is the ID code of the first-line device. [0004] In the first-line bus monitoring application, the first-line device monitoring information on the first-line ...

Claims

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Application Information

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IPC IPC(8): H04L29/06H04L12/26
Inventor 翟延忠周兴旺李长忠赵玉明许舒荣郭垒
Owner BEIJING CHINA COAL MINE ENG CO LTD
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