Engine exhaust temperature inspection system based on ModbusTCP/IP

Abstract

The invention belongs to the technical field of inspection instrumentation equipment, and in particular relates to an engine exhaust temperature inspection system based on ModbusTCP / IP comprising a temperature measuring network that uses a lower multi-channel thermocouple temperature measuring module and a host PC or a touch screen equipped with a temperature main control program as nodes, performs connection through 5 types of twisted-pairs and uses a Modbus TCP / IP communication protocol, wherein the multi-channel thermocouple temperature measuring module comprises a microcontroller circuit,a thermocouple temperature measuring circuit, an Ethernet communication circuit and a power supply circuit; the temperature main control program is designed and developed by configuration software tosupport two installation modes of the PC and touch screen. The temperature inspection system provided by the invention has high data transmission rate, high reliability and easy extension of network opening, can conveniently realize remote data communication, has the functions such as distributed operation, remote monitoring and network fault diagnosis, and can be easily promoted to other temperature measurement occasions.

Description

technical field [0001] The invention belongs to the technical field of inspection instrument equipment, and in particular relates to an engine exhaust temperature inspection system based on ModbusTCP / IP. Background technique [0002] In industrial workshops, factories and mines, land transportation, navigation and other fields where engines are used, the exhaust temperature of the cylinder reflects the operating status of the engine and is an important monitoring parameter. At present, the problems existing in the engine temperature inspection system are: the networking method is backward and usually adopts Serial communication protocols such as RS232, RS485, and CAN have the disadvantages of low transmission rate and short transmission distance, and the transmission signal is susceptible to external interference. When the monitoring targets are scattered, there are many measurement points, and remote diagnosis is required, it is difficult to network through the above communi...

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Problems solved by technology

[0002] In industrial workshops, factories and mines, land transportation, navigation and other fields where engines are used, the exhaust temperature of the cylinder reflects the operating status of the engine and is an important monitoring parameter. At present, the problems existing in the engine temperature inspection system are: the networking method is backward and usually adopts Serial communication protocols such as RS232, RS485, and CAN have the disadvantages of low transmission rate and short transmission distance, and the transmission signal is susceptible to external interference. When the monitoring targets are scattered, there are many measurement points, and remote diagnosis is required, it is difficult to network through the above communication methods Realization; the temperature acquisition module often does not have a self-calibration function, and the temperature is prone to drift after a period of continuous operation; the single function of the temperature control software is usually simple real-time display of temperature data, temperature upper and lower limit alarms, no trend curve display, historical data query, Report printing and other functions

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