Foundation field bus (FF) H1 temperature measuring device

A fieldbus, temperature measurement technology, applied in measuring devices, thermometers, measuring heat, etc., can solve the problems of inaccurate data, high cable cost, poor anti-interference ability of analog signals, etc., to achieve cost reduction, temperature accuracy, anti-interference and other problems powerful effect

Inactive Publication Date: 2011-06-08
BEIJING HUAKONG TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The laying, inspection and maintenance of cables requires a lot of manpower, material and financial resources, and the cost of the cables themselves is quite high, even greatly exceeding the syste

Method used

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  • Foundation field bus (FF) H1 temperature measuring device
  • Foundation field bus (FF) H1 temperature measuring device
  • Foundation field bus (FF) H1 temperature measuring device

Examples

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Embodiment Construction

[0031] In order to make the above objects, features and advantages of the present invention more comprehensible, specific implementations of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0032] see figure 1 , which is a structural diagram of Embodiment 1 of the FF H1 field bus temperature measuring device provided by the present invention.

[0033] The FF H1 field bus temperature measurement device provided by the embodiment of the present invention includes: a temperature sensor 101 , a sensor signal conditioning unit 102 , an analog-to-digital conversion unit 103 , a microprocessor 104 , a field bus communication controller 105 and a media connection unit 106 .

[0034] The temperature sensor 101 is used to collect the temperature of the measuring point equipment.

[0035] The temperature sensor 101 may be a thermocouple or a thermal resistor.

[0036] The sensor signal conditioning unit 102 is configured to amplif...

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Abstract

The invention provides a foundation fieldbus (FF) H1 temperature measuring device. The device comprises a temperature sensor, a sensor signal regulating unit, an analog-to-digital conversion unit, a microprocessor, a field bus communication controller and a media connecting unit, wherein the temperature sensor collects temperature of point testing equipment; the sensor signal regulating unit performs signal amplification and filter processing on the temperature collected by the temperature sensor, and transmits the processed signal to the analog-to-digital conversion unit; the analog-to-digital conversion unit performs analog-to-digital conversion on the signal transmitted by the sensor signal regulating unit, and transmits the converted digital signal to the microprocessor; the microprocessor performs linear processing and temperature compensation on the digital signal, and transmits the processed signal to the field bus communication controller; the field bus communication controller converts the signal transmitted by the microprocessor into FF H1 data link layer data, and transmits the data to the media connecting unit; and the media connecting unit converts the data link layer data into physical layer data, and transmits the physical layer data to the FF H1. The device performs transmission by adopting the digital signal, and has strong interference resistance, so the measured temperature is more accurate.

Description

technical field [0001] The invention relates to the field bus technology field, in particular to an FF H1 field bus temperature measuring device. Background technique [0002] Foundation Fieldbus (FF, FOUNDATION Fieldbus) is an all-digital, two-way transmission, multi-point communication, supports bus power supply, and is a communication link for connecting intelligent devices and automation systems. FF fieldbus can be regarded as a field-based local area network (LAN), used to connect various instruments, valve positioners and other intelligent devices, which itself can provide control applications to the entire network. [0003] FF H1 field bus is a low-speed bus specially used for process automation. The communication rate is 31.25Kbps. The transmission signal adopts Manchester encoding, supports bus power supply, and provides intrinsic safety. The topological structure of FF H1 field bus can adopt bus type, tree type and daisy chain type, and it can be mixed topology st...

Claims

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Application Information

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IPC IPC(8): G01K1/02G08C19/00G01K1/024
Inventor 周勇蒋济友吴建军李强李长鸿
Owner BEIJING HUAKONG TECH
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