Temperature and pressure compensation method and system for calibrating transmitter based on database file
A temperature and pressure compensation and transmitter technology, applied in the field of temperature and pressure compensation, can solve problems such as poor flexibility and practicability, process curing, etc., and achieve the effects of good practicability, simple operation and flexible setting
Active Publication Date: 2019-08-09
重庆四联测控技术有限公司 +1
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Problems solved by technology
[0061] In view of the shortcomings of the prior art described above, the purpose of the present invention is to provide a temperature and pressure compensation method and system for calibrating transmitters based on database files, which is used to solve the problem of the automatic temperature and pressure compensation system in the prior art. The dominant control has the problems of serious process solidification, poor flexibility and practicability
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[0086] Embodiments of the present invention are described below through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation modes, and various modifications or changes can be made to the details in this specification based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that, in the case of no conflict, the following embodiments and features in the embodiments can be combined with each other.
[0087] It should be noted that the diagrams provided in the following embodiments are only schematically illustrating the basic ideas of the present invention, and only the components related to the present invention are shown in the diagrams rather than the number, shape and shape of component...
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The invention provides a method and a system for temperature and pressure compensation based on a database file calibration transmitter. The method comprises the following steps: acquiring all attribute domain state values in a system running state table in a database; reading the running state value of the system running state table; judging whether or not to start calibration according to the running state value; according to a sensor information record table, carrying out compensation on temperature compensation points set in a temperature compensation table from low to high; acquiring the types of transmitter sensors, the addresses of pressure controllers and drive ports, and selecting a corresponding fixture on a pipeline to lead in calibration pressure; acquiring pressure data of transmitter sensor compensation and calibration, adjusting the calibration pressure by referring to the pressure control precision and according to the pressure data, and calibrating the transmitter sensors; and acquiring the drive port and drive data corresponding to each port number in a bus switching data table, connecting to-be-calibrated transmitter sensors on corresponding stations, and calibrating the current station according to a sampling instruction. The calibration process of the invention is simple in operation and highly flexible.
Description
technical field [0001] The invention belongs to the technical field of flow detection, in particular to a temperature and pressure compensation method and system for calibrating transmitters based on the fusion of databases and files. Background technique [0002] Enterprises that produce pressure transmitters must carry out a production process of linear compensation and correction of temperature and pressure for each pressure transmitter that leaves the factory. The production process needs to be equipped with one or more sets of calibration and compensation systems for temperature and pressure. And the whole set of calibration compensation system is composed of control master station, calibration equipment, control bus, temperature and pressure compensation calibration circuit and pressure supply pipeline device, such as figure 1 As shown, it is the frame structure diagram of the temperature and pressure compensation system of the (pressure or differential pressure) tran...
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IPC IPC(8): G01L27/00
CPCG01L27/002
Inventor 田英明
Owner 重庆四联测控技术有限公司