Intelligent self-diagnosis pressure transmission device

A self-diagnosis and pressure technology, applied in the direction of measuring devices, measuring fluid pressure, instruments, etc., can solve problems such as weak self-diagnosis function, low intelligence of pressure transmitters, and difficult to guarantee measurement accuracy, and achieve scientific design principles and variable The effect of sending accurate and clear information, reasonable and complete structure

Pending Publication Date: 2019-01-18
QINGDAO UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the shortcomings of the existing technology, aiming at the defects of the existing pressure transmitters such as low intelligence, difficulty in ensuring measurement accuracy and weak self-diagnosis function, and on the premise of ensuring environmental protection, energy saving and accurate measurement, a pressure transmitter is designed. An intelligent self-diagnostic pressure transmitter

Method used

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  • Intelligent self-diagnosis pressure transmission device

Examples

Experimental program
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Effect test

Embodiment 1

[0019] The main structure of the intelligent self-diagnostic pressure transmitter involved in this embodiment includes an intelligent pressure transmitter 1, a milliampere meter 2, an RL circuit 3, a recorder 4, a power supply 5, a controller 6, and a fault indicator 7 , pressure sensing module 8, temperature detection module 9, analog-to-digital conversion module 10, microprocessor 11, 16-bit single-chip microcomputer 12, current control circuit 13, zero adjustment button 14, key 15, display module 16, communication interface 17 and HART The communication module 18; the intelligent pressure transmitter 1 is provided with four wiring ports for detecting the pressure of the production and storage materials of chemical enterprises; the first wiring port of the intelligent pressure transmitter 1 is connected to the input end of the RL circuit 3 Electrically connected, the RL circuit 3 can stabilize the voltage of the circuit; the output end of the RL circuit 3 is electrically conn...

Embodiment 2

[0023] The working process of the intelligent self-diagnostic pressure transmission device involved in this embodiment is: equipment installation and parameter setting, data measurement and remote monitoring, voltage adjustment and device self-diagnosis. The specific operation steps are as follows:

[0024] (1) Equipment installation and parameter setting: the intelligent pressure transmitter 1 is fixedly installed on the outside of the storage equipment, the pressure sensing module 8 is placed inside the storage equipment, and the intelligent pressure transmitter 1, The safety meter 2, RL circuit 3, recorder 4, power supply 5 and fault indicator 7 are connected in series to form a closed loop, the intelligent pressure transmitter 1 and the controller 6 are connected in a two-wire connection, the power supply 5 is started, and the whole device Run, adjust the zero adjustment button 14 and the button 15 to set the parameters of the intelligent pressure transmitter 1;

[0025] (...

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Abstract

The invention belongs to the technical field of industrial self-control equipment, and in particular relates to an intelligent self-diagnosis pressure transmission device that is mainly composed of anintelligent pressure transmitter, a milliammeter, a RL circuit, a recorder and a power and fault indicator electric information communication combination; the intelligent pressure transmitter comprises a pressure sensing module, a temperature detection module, an analog-to-digital conversion module, a microprocessor, a current control circuit and an HART communication module; the pressure sensingmodule transmits a detected pressure signal to the microprocessor via the analog-to-digital conversion module; the microprocessor outputs a current control signal after signal computation and sends the signal to the current control circuit; the current control circuit converts the current control signal into a 4-20mA analog current and outputs the current to the controller. The device is reasonable and complete in structure, scientific, practical and compatible with intelligent products of an HART protocol, has the functions of communication, inquiry and self-diagnosis, and is high in electric information control intelligence degree, safe and reliable in operation, accurate and clear in transmission information, and friendly to application environment.

Description

Technical field: [0001] The invention belongs to the technical field of industrial automatic control equipment, and relates to a pressure transmission sensor, in particular to an intelligent self-diagnostic pressure transmission device, which can remotely control or control the pressure in the field or in the control room through a PC or a hand-operated instrument. Reconfigure. Background technique: [0002] At present, the pressure transmitter is the most commonly used sensor in industrial practice. It is widely used in various industrial automatic control environments, involving water conservancy and hydropower, railway transportation, intelligent buildings, production automatic control, aerospace, military industry, petrochemical, oil wells, electric power , Ships, machine tools, pipelines and many other industries, there are two types of pressure transmitters: electric and pneumatic. The output signal is the gas pressure of 20 ~ 100Pa, and the pressure transmitter can b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01L19/00G01L27/00
CPCG01L19/00G01L27/007
Inventor 于正河赵园坤陈强
Owner QINGDAO UNIV
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