Automatic calibration method of visual thermometer and automatic thermometer calibrator

A technology for thermometers and calibrators, applied in thermometers, thermometer testing/calibration, instruments, etc., can solve the problems of long verification time, low accuracy, and poor consistency, and achieve the effects of reducing errors, improving work efficiency, and reducing labor intensity

Active Publication Date: 2011-01-19
LOGISTICAL ENGINEERING UNIVERSITY OF PLA +1
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0004] It can be seen that the traditional thermometer verification work is very cumbersome, and the readings of manual observation thermometers have the disadvantages of low accuracy, poor observation consistency and long verification time; depending on the question, which will also affect the accuracy and consistency of the test

Method used

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  • Automatic calibration method of visual thermometer and automatic thermometer calibrator
  • Automatic calibration method of visual thermometer and automatic thermometer calibrator
  • Automatic calibration method of visual thermometer and automatic thermometer calibrator

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Embodiment Construction

[0039] When carrying out mercury or alcohol thermometer verification, selected one group of verification temperature is generally the temperature value represented by the long scale line, for a certain selected verification temperature, the automatic verification method of the present invention is as follows: figure 1 shown, including the following steps:

[0040]Step 1: Place the verified standard thermometer and the verified thermometer in a constant temperature bath together, adjust the temperature of the constant temperature bath to the approximate verification temperature, and the approximate verification temperature is approximately equal to or equal to the selected verification temperature. temperature; here, since the computer figure 2 The shown temperature control unit 3 adjusts the temperature of the constant temperature tank, and the computer outputs the verification temperature, and compares it with the real-time temperature of the constant temperature tank fed ba...

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Abstract

The invention discloses an automatic calibration method of a visual thermometer and an automatic thermometer calibrator. For a certain selected calibration temperature, the method comprises the following steps: 1, placing both a standard thermometer and a thermometer to be calibrated in a content-temperature tank, and regulating the temperature of the constant-temperature tank to an approximate calibration temperature; 2, capturing the images of the standard thermometer and the thermometer to be calibrated at the approximate calibration temperature by using first and second cameras respectively, and using the images as a standard image and an image to be calibrated respectively; and 3, calculating the readings of the standard thermometer and the thermometer to be calibrated by using a computer according to the standard image and the image to be calibrated respectively, and using the difference between the two readings as the corrected value of the thermometer to be calibrated at the approximate calibration temperature. The automatic calibration method and the automatic calibration device of the invention can accomplish automatic calibration and reduce various errors in a transmission process. In addition, the method and the device also can reduce the labor intensity of workers and improve working efficiency and calibration consistency.

Description

technical field [0001] The invention relates to the technical field of temperature verification, in particular to an automatic visual thermometer and a temperature verification device. Background technique [0002] Mercury thermometers and alcohol thermometers are widely used in daily production and work. Although many other types of temperature measurement tools have appeared, these temperature measurement tools are still not as accurate and reliable as traditional mercury and alcohol thermometers. Therefore, mercury and alcohol thermometers The verification is a must for all walks of life. [0003] A commonly used verification method is to place the verified thermometer (sensor) and the verified standard thermometer (sensor) with higher precision in an adjustable constant temperature bath, and adjust the temperature of the constant temperature bath separately during the verification. Go to a number of selected temperature points, compare and record the readings of the two...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01K15/00
Inventor 江湘津王立光王宏鹏娄方
Owner LOGISTICAL ENGINEERING UNIVERSITY OF PLA
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