System and method for correcting precision of sensors of pressure acquisition system

A pressure sensor and acquisition system technology, applied in the direction of measuring fluid pressure, instruments, measuring devices, etc., can solve the problem of inability to correct the pressure acquisition system sensor with PVC data table, and achieve the effect of flexible and convenient working mode, high efficiency and cost reduction

Inactive Publication Date: 2012-09-12
NORTHWESTERN POLYTECHNICAL UNIV
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Problems solved by technology

[0003] In order to overcome the deficiency that the existing technology cannot use the PVC data table to correct the accuracy of the sensor of the pressure acquisition system through the Internet, the present invention provides a system for correcting the a

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  • System and method for correcting precision of sensors of pressure acquisition system
  • System and method for correcting precision of sensors of pressure acquisition system
  • System and method for correcting precision of sensors of pressure acquisition system

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Embodiment Construction

[0022] The invention includes a standard pressure source, a PVC data table memory, an industrial control machine, a pressure collection accuracy correction module, an Internet server, a PVC data table air pressure output system, and a pressure collection system.

[0023] The pressure acquisition system is composed of L pressure sensors, and the memory of each pressure sensor stores the pressure sensor PVC with input characteristics 传感器N data sheet, per PVC 传感器N The data table has three sets of P 传感器N , V 传感器N 、C 传感 器系数N Data table data, each data table has N input data and conforms to P 传感器N =V 传感器N *C 传感器系数N , where P 传感器N is the pressure sensor N input air pressure data, V 传感器N is the N voltage data at both ends of the pressure sensor, C 传感 器系数N It is the N pressure coefficient data of the pressure sensor, and the PVC of the L-way pressure sensor of the pressure acquisition system 传感器N The data table data is sent to the industrial control machine through the Inter...

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Abstract

The invention discloses a system and a method for correcting precision of sensors of a pressure acquisition system. The method includes: a standard pressure source generates standard data tables of different ranges and precision levels and stores the standard data tables in a PVC (pressure, voltage and coefficient) data table memory, the pressure acquisition system acquires data tables of each pressure sensor and transmits to an industrial computer through an internet server and a pressure acquisition precision correcting module sequentially, and the industrial computer judges the precision level of each pressure sensor and sends higher-precision standard data tables to pressure sensors beyond the error requirement and outputs corresponding pressure to the pressure acquisition system through a PVC data table air pressure output system to correct the precision level of the pressure sensors. By the system and the method for correcting precision of sensors of the pressure acquisition system, peripheral equipment such as nitrogen gas cylinders can be omitted, the method is simple, cost is low, efficiency is high, operating modes are flexible and convenient, a great amount of labor, material resources and financial resources are saved, cost for correction of the pressure acquisition system is lowered, and the system and the method have certain economic and social benefits.

Description

technical field [0001] The invention relates to the technical field of pressure calibration and remote measurement and control, in particular to a system for correcting the sensor accuracy of a pressure acquisition system through the Internet by using a PVC data table. Background technique [0002] The pressure acquisition system consists of multiple pressure sensors. The pressure scanning pressure acquisition instrument is mainly used in the wind tunnel experiment to measure the pressure distribution on the surface of the airfoil and the pressure on the wall of the tunnel. Due to various reasons, there will be errors in the process of collecting data by the pressure sensor, so the accuracy of the sensor of the pressure acquisition system should be calibrated and corrected within a preset period. At present, many studies have been carried out on the calibration and correction of the sensor accuracy of the pressure acquisition system at home and abroad, especially the method...

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Application Information

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IPC IPC(8): G01L27/00
Inventor 金承信高正红高永卫惠增宏焦予秦
Owner NORTHWESTERN POLYTECHNICAL UNIV
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