Device and method for improving temperature measurement accuracy of industrial site thermal imager
An industrial site, temperature measurement accuracy technology, applied in the direction of measuring devices, radiation pyrometry, instruments, etc., can solve the problems of inaccurate surface emissivity and infrared temperature, achieve high precision, easy to carry, and improve the accuracy of infrared temperature measurement Effect
Active Publication Date: 2018-08-07
CHINA JILIANG UNIV
View PDF7 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
At present, the method proposed by Wang Zeyao et al. for measuring the surface emissivity of on-site objects (an on-site calibration method for object surface emissivity, Chinese Invention Patent Publication No. 104006887A, date of publication August 27, 2014) is portable, but this method uses calibration The surface temperature of the target replaces the real temperature of the surface of the measured object, and then the surface emissivity of the measured object is obtained; due to the heat loss in the heat conduction, there is an error between the two temperatures, so the measured surface emissivity and infrared temperature are not accurate
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment
[0056] The present invention uses a Fluke Ti25 thermal imager and a digital display constant temperature heating platform as test objects, performs display error calibration on the Fluke Ti25 thermal imager that has not been used for a period of time, and measures the emissivity of the surface of the constant temperature heating platform in different temperature ranges . The coating paint used in the present invention is Bolsly high-temperature-resistant automatic spray paint, the model is B-1939, the emissivity is 0.97, the color is black, the temperature resistance is 550°C, and it has quick-drying and good compactness.
[0057] Fluke Ti25 thermal imager, temperature range -20°C-350°C, accuracy ±2%, with emissivity correction function, thermal sensitivity is less than 0.1°C.
[0058] The temperature of the digital display constant temperature heating platform can be automatically adjusted within 0°C-400°C. The control method is an intelligent temperature control meter plus a...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
| Property | Measurement | Unit |
|---|---|---|
| emissivity | aaaaa | aaaaa |
| emissivity | aaaaa | aaaaa |
| emissivity | aaaaa | aaaaa |
Login to View More
Abstract
The invention discloses a device and a method for improving the temperature measurement accuracy of an industrial field thermal imager. It is divided into two layers: the top layer and the bottom layer. The bottom layer is a patch-type temperature sensor mainly made of thermally conductive aluminum sheets embedded with platinum resistors. The top layer is uniformly sprayed on the bottom layer. There are four through-slots evenly spaced along the outer circumference, each through-slot is installed with platinum resistors, and the connecting wires at both ends of the four platinum resistors are connected to an external temperature instrument; when used in the field, the device is used as a radiation calibration source, adjusted to a coating Emissivity error calibration; use platinum resistance and calibrated thermal imager to measure the surface temperature of the object to be measured to calculate the surface emissivity of the object to be measured; adjust it to measure the surface emissivity of the object to be measured. The invention can provide a portable thermal imager display value error calibration device for industrial sites, and by measuring the surface emissivity of the object to be measured in different temperature ranges, the infrared temperature measurement of the surface of the object on site can be achieved, thereby improving the accuracy of the temperature measurement of the thermal imager on the industrial site. sex.
Description
technical field [0001] The invention relates to a device and a method for improving the temperature measurement accuracy of a thermal imager, in particular to a device and a method for improving the temperature measurement accuracy of a thermal imager on an industrial site. Background technique [0002] According to the specifications for the use of industrial detection thermal imagers, the thermal imager needs to be calibrated before each use. In the thermal imager calibration specification (JJF1187-2008), platinum resistance thermometers, thermocouples or radiation thermometers are usually used as standards to measure the temperature of blackbody radiation sources. Since calibration of thermal imagers on industrial sites requires carrying a variety of equipment, such as standards, black body radiation sources, etc., it is not easy to operate and will damage the performance of the equipment. [0003] The thermal imager can convert the thermal radiation on the surface of th...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): G01J5/00
CPCG01J5/00G01J5/802
Inventor 陈乐吾云霞富雅琼张雪英
Owner CHINA JILIANG UNIV