Field bus based thermocouple measurement module and measurement method thereof

A technology of measurement module and field bus, which is applied in the field of thermocouple measurement module and its measurement, can solve the problems of inconvenient industrial networking, unsatisfactory large data transmission, and lack of standard industrial bus protocol, etc., to achieve convenient and fast networking , Convenient system expansion, compact and small effect

Pending Publication Date: 2019-12-17
TIANJIN GENEUO TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Different customers use different temperature sensors (TC or RTD sensors) and different wiring methods (such as 2/3/4 wires) in the field application. It is difficult for the current temperature acquisition module to meet these diffe

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  • Field bus based thermocouple measurement module and measurement method thereof
  • Field bus based thermocouple measurement module and measurement method thereof
  • Field bus based thermocouple measurement module and measurement method thereof

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Embodiment Construction

[0056] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0057] Such as figure 1As shown, a thermocouple measurement module based on field bus includes a processor, an Ethernet switch, a power module and a bus isolation unit, and the processor is electrically connected to the Ethernet switch, the power module and the bus isolation unit respectively, and the One path of the Ethernet switch is electrically connected to the Ethernet connector LINK1 after passing through the isolation transformer, and the other path is electrically connected to the Ethernet connector LINK2 after passing through the isolation transformer. The Ethernet switch expands two Ethernet interfaces for data transmission. The bus isolation unit The analog-to-digital converter is electrically connected to multiple analog switches, and the multiple analog switches are electrically connected to the IO interface connector after passin...

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Abstract

The invention provides a field bus based thermocouple measurement module and a measurement method thereof. The thermocouple measurement module comprises a processor, an Ethernet switch, a power supplymodule and a bus isolation unit. The processor is electrically connected with the Ethernet switch, the power supply module and the bus isolation unit. One path of the Ethernet switch is electricallyconnected with the Ethernet connector LINK1 after passing an isolation transformer, the bus isolation unit is electrically connected with a multipath analog switch through an analog-to-digital converter, and the multipath analog switch is electrically connected with an IO interface connector sequentially through a low-pass filter circuit and an overvoltage protection circuit. All measurement portsof the module can be configured at will for thermal resistance RTD and thermocouple TC measurement, a standard Ethernet industrial protocol is integrated, the module is especially suitable for a large data volume transmission and real-time control temperature measurement system, rapid networking and system expansion of an industrial field are facilitated, and different requirements of customers are met.

Description

technical field [0001] The invention relates to the field of industrial buses, in particular to a field bus-based thermocouple measurement module and a measurement method thereof. Background technique [0002] High-precision temperature measurement is a critical parameter in industrial automation applications. In the field of industrial temperature measurement applications, equipment needs to adapt to harsh working conditions, and temperature acquisition requires a wide range of temperature measurement, fast sampling speed, and high accuracy. Different customers use different temperature sensors (TC or RTD sensors) and different wiring methods (such as 2 / 3 / 4 wires) in the field application. It is difficult for the current temperature acquisition module to meet these different measurement requirements at the same time; at the same time, some products It does not have a standard industrial bus protocol, does not meet the transmission of large amounts of data, and is inconveni...

Claims

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Application Information

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IPC IPC(8): G01K7/02G01K7/12G01K7/18G01K7/026
CPCG01K7/12G01K7/02G01K7/18G01K2219/00
Inventor 李武库高海涛李涛刘文英
Owner TIANJIN GENEUO TECH CO LTD
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