Wired temperature measurement system

Abstract

The invention creatively provides a wired temperature measuring system comprising an MCU (microprogrammed control unit), a receive data (RXD) module, a transmit data (TXD) module, a transceiving state switching module (RD), multiple data bus interface transceiving modules, multiple bus connectors and multiple digital temperature sensors, wherein the bus connectors change an OD gate working mode of a DS18B20 into a working mode of balance transmission and data signal differential receiving of an RS485 bus interface, and the data bus interface transceiving modules change a working mode of a three-state gate of GPIO (General Purpose Input / Output) into a working mode of balance transmission and data signal differential receiving of the RS485 bus interface. According to the scheme adopted by the invention, the DS18B20 digital temperature sensor is applicable to an industrialized production field of electromagnetic interference; the communication distance is greatly widened; the bus interface quantity of an acquirer is expanded, the wiring is performed towards different directions, the temperature acquiring range of the acquirer is improved, the use and design difficulty is reduced, programmable devices are saved, and the cost of the whole temperature measuring system is lowered.

Description

technical field [0001] The invention relates to a temperature measurement system for temperature detection of high-power equipment, which adopts a wired data transmission structure, and the transmission mode of data signals adopts a communication technology similar to RS485 bus. Background technique [0002] The high-power motors, reducers, belt pulleys, idlers and other mechanical transmission equipment commonly used in modern industrial production sites will bring inevitable mechanical wear due to factors such as harsh operating environment, high load, fast speed, and long operating time. The equipment is seriously damaged by heat, and even causes a fire, resulting in production safety and personal accidents; [0003] In response to the above problems, the wired temperature measurement system developed and produced by the applicant can effectively detect the temperature of the bearings, casings and other parts of such equipment online in real time, and can perform over-tem...

AI Technical Summary

Problems solved by technology

[0013] The technical problem to be solved by this patent is to convert the three-state gate working mode of the GPIO interface of the MCU and the OD gate working mode of the DS18B20, as well as the common mode signal transmission mode formed by them, into a balanced transmission and transmission mode similar to the RS485 bus communication technology The working mode of receiving data signals differentially, and without adding other programmable devices, essentially provides a cheap and simple solution to the problems of poor anti-electromagnetic interference ability and short communication distance

Images