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Automatic calibrating device for pressure instrument and calibrating method thereof

A pressure instrument and verification device technology, applied in the field of pressure instrument automatic verification device, can solve problems such as weak automation capability and low versatility, and achieve the effects of improving efficiency, convenient use and operation, and improving detection accuracy and efficiency.

Pending Publication Date: 2021-04-09
SHANGHAI PRECISION METROLOGY & TEST RES INST
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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 provide an automatic verification device for pressure instruments and a verification method thereof, so as to solve the problems of low versatility and weak automation ability of current pressure instrument detection devices

Method used

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  • Automatic calibrating device for pressure instrument and calibrating method thereof
  • Automatic calibrating device for pressure instrument and calibrating method thereof
  • Automatic calibrating device for pressure instrument and calibrating method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036]image 3 A number of digital pressure gauge images provided for the embodiment of the present invention is a schematic diagram. Referimage 3 , The detected pressure table 19 is a digital pressure table 1901, and the detected digital pressure table 1901 is fixed to the multi-channel pressure gauge passage test bench 16, and the operation control shows the position of the industrial camera 14 to adjust the position of the industrial camera 14. Its the axis of the detected digital pressure Table 1901 is on the line, the light intensity and focal length of the industrial camera 14 is adjusted, so that the industrial camera 14 can clearly identify the detected digital pressure gauge 1901 dial information, manual or automatic control pressurization device. 17. Start the acquisition process, trigger the industrial camera 14 to shoot the current pressure representation value. Standard Pressure Table 18 shows the connection to the control display one by serial port output.

[0037]In the a...

Embodiment 2

[0046]Figure 4 A schematic structural diagram of a pointer-type pressure gauge image provided in the second embodiment of the present invention. ReferFigure 4 The detected pressure table is the pointer pressure Table 1902, and the detected pointer pressure table 1902 is fixed to the multi-channel pressure gauge check bench 16, and the operation control display all-in-one drive adjustment motor 15 adjusts the position of the industrial camera 14 to make it The axis of the detected needle pressure Table 1902 adjusts the light intensity and focal length of the industrial camera 14, so that the industrial camera 14 can clearly identify the detected pointer-type pressure gauge 1902 dial information, start the acquisition process. Manually or automatically controls the pressurizing device 17, stops pressurization at each verification point position, driving the tap mechanism 41 tap the instructions of the needle pressure table 1902 dial housing, and triggers the industrial camera 14 to sh...

Embodiment 3

[0056]Figure 5 A two-channel pointer-type pressure gauge image acquisition is a schematic structural diagram of a dual-channel pointer-type pressure gauge image provided in the first embodiment of the present invention. ReferFigure 5 The detected pressure table is a dual-channel pointer pressure Table 1902, and two detected needle pressure table 1902 are fixed to the multi-channel pressure gauge check bench 16, and the operation control display all-in-one drive adjustment motor 15 adjusts the industrial camera 14 Location, it is possible to simultaneously observe the two-detected pointer pressure Table 1902, adjust the light intensity and focal length of the industrial camera 14, so that the industrial camera 14 can clearly identify two detected pointer-type pressure gauge 1902 dial information, start collecting procedures . Manually or automatically controls the pressurizing device 17, stops pressurization at each verification point position, driving the tap mechanism 41 tap the in...

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Abstract

The invention provides an automatic calibrating device for a pressure instrument. The automatic calibrating device comprises a device body framework; a control and display all-in-one machine embedded in a front panel; position adjusting sliding rails of a camera arranged in the X direction, the Y direction and the Z direction respectively; an industrial camera arranged on the position adjusting sliding rails of the camera; an adjusting motor which is connected with an acquisition controller and comprises three linear motors, and the three linear motors drive the position adjusting sliding rails of the camera to move in the X direction, the Y direction and the Z direction respectively; a multi-channel pressure gauge inspection bench; a pressurizing device connected with the multi-channel pressure gauge inspection bench; and a standard pressure gauge connected with the control and display all-in-one machine through serial port output. The invention further provides a calibrating method of the automatic calibrating device for the pressure instrument. According to the automatic calibrating device for pressure instrument and calibrating method thereof, the machine vision technology is utilized, the image acquisition processing identification method is adopted to replace a traditional human eye identification method, subjective errors caused by a manual observation method are eliminated, and the detection precision and efficiency are improved.

Description

Technical field[0001]The present invention relates to the field of measuring tests, and in particular, to the automatic verification device of the pressure gauge and the method thereof.Background technique[0002]Pressure meter refers to a tool that is used as a sensitive component, measuring and indicating a pressure-sized tool, and is widely used in daily production scientific research such as boiler, pressure vessel. Therefore, the pressure instrument used on the device must perform a periodic measurement verification every half year or year or according to the on-site demand, and it can continue to be used by metering. The existing pressure gauge metering method is to connect a single subject to the standardizer. The verification process is mainly compared with the standard value, and the verification process is mainly filled in the paper original record, calculates the detected pressure gauge. Maximum allowable error, maximum allowable backhaul error, etc. This method of operatio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/40G06K9/46G06N3/08
CPCG06N3/08G06V10/30G06V10/44G06V2201/02
Inventor 毛志勇陈炜祝卿陈继刚倪博
Owner SHANGHAI PRECISION METROLOGY & TEST RES INST
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