Blackbody radiant source cavity device with calibration accessory

Abstract

The invention belongs to the technical field of thermodynamics and discloses a blackbody radiant source cavity device with a calibration accessory, comprising a blackbody cavity and the calibration accessory, wherein the blackbody cavity is cylindrical or conical, and a high-emissivity material is sprayed on the surface of the inner wall of the blackbody cavity; and the calibration accessory is ametal diaphragm which is detachably installed at the opening of the blackbody cavity, and one side of the calibration accessory facing to the blackbody cavity is a gold-plated reflecting surface. Theblackbody radiant source cavity device with the calibration accessory can be used for carrying out laboratory and field calibration on an infrared thermometer for measuring body temperature, a rapid body temperature detector and an infrared tympanic thermometer; the cavity device is also provided with a temperature sensor and / or a temperature controller for realizing real-time adjustment on temperature; and by using the calibration accessory, the effective emissivity of the cylindrical surface of the blackbody cavity can be improved so that a manufactured blackbody radiant source has good stability and low indeterminacy, is simple, convenient and flexible to operate, can meet the requirements for portability and high calibration precision, and can be applied to the field calibration on the infrared thermometer with an oversized measuring view field angle on the basis of having conventional performance.

Description

technical field [0001] The invention belongs to the technical field of thermodynamics, and relates to a blackbody radiation source cavity device with calibration accessories. Background technique [0002] In the spring of 2003, the SARS virus quietly descended on all parts of the country like a ghost. Due to the low awareness of the virus and the strong contagiousness of the virus, if it is not properly dealt with and controlled in time, the consequences will be disastrous. Similarly, the H1N1 influenza virus that appeared worldwide in 2009 is also contagious to a certain extent, requiring early detection, early isolation, and early treatment. [0003] As people continue to understand the characteristics of infectious viruses and their transmission methods, screening individuals with high temperatures at ports and crowd gathering places has become the most effective way to avoid the spread of infectious viruses. Since the infectious virus has the characteristic that the lon...

AI Technical Summary

Problems solved by technology

The effective emissivity of a conventional blackbody cavity with a larger opening is higher only in the deeper part of the cavity, which can meet the calibration requirements, and the closer to the opening, the lower the effective emissivity, which is not suitable for measuring with a large field of view. Calibration of infrared ear thermometers or infrared forehead thermometers

Images