A portable one-line bus temperature monitoring instrument and its implementation method

Abstract

The invention relates to a portable one-line bus temperature monitoring instrument and its realization method. The temperature monitoring instrument includes a minimum system of a single-chip microcomputer and a power circuit connected to the minimum system of the single-chip microcomputer, a one-line bus interface circuit, a communication interface module, a storage chip, a clock chip, and a liquid crystal display. module and keyboard input module; the power supply circuit is used to provide working voltage, and the minimum system of the single chip microcomputer is respectively connected with the first-line bus temperature measuring cable and the monitoring host through the first-line bus interface circuit and the communication interface module. The memory chip is used to store cable parameters and temperature parameters; the clock chip is used to provide a real-time clock; the liquid crystal display module is used to display the temperature information processed by the minimum system of the single-chip microcomputer; The system inputs the operation instruction information. A portable one-line bus temperature monitoring instrument is realized by setting the main control program, interrupt service program and sub-processing program in the minimum system of single-chip microcomputer.

Description

technical field [0001] The invention relates to a temperature monitoring instrument and its implementation method, in particular to a portable one-line bus temperature monitoring instrument and its implementation method. Background technique [0002] A one-line bus refers to a bus that uses only one signal line and one return line as a reference ground to realize digital communication. Using one-line bus technology can realize the access and control of several one-line bus devices that are lapped on this bus. One-line devices are devices that comply with the one-line bus protocol and realize certain functions such as sensing, transformation, control, and storage. Each one-line device is etched with a unique set of 64-bit binary codes (referred to as ID codes) when leaving the factory for identification Differentiate each one-line device. One-line digital temperature sensor DS18B20 is one of the most typical one-line devices. [0003] In actual practice, several one-line di...

AI Technical Summary

Problems solved by technology

This method requires large investment, many technical implementation links, and high cost. It is suitable for occasions with large-scale measuring points and high monitoring frequency.

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