Preface I
Preface
Summary
The temperature of all materials is higher than absolute zero (- 273.15
℃
) and radiates
electromagnetic wave continuously. The thermal imaging camera collects the infrared radiation energy
emitted by the measured objects, and establishes the accurate corresponding relationship between the
target energy and temperature through complex temperature measurement algorithm and blackbody
temperature measurement calibration and other processes, so as to realize the temperature measurement
function of human body. It is characterized by non-contact, multi-objective, fast, and no risk to the
temperature measurer. It can be easily deployed in densely populated public places, and it can effectively
and safely screen the abnormal temperature preliminarily.
Thermal imaging human body temperature measurement, mainly through the measurement of human
forehead and face temperature (according to the different environment of about 31-36
℃
), preliminary
judgment, found that the suspected abnormal temperature, and then use ear temperature gun or mercury
thermometer to further confirm. As the skin surface of forehead and face is exposed to the air, the
temperature changes due to the influence of air flow and sweat. Generally, under the indoor ambient
temperature of 15
℃
in winter, if the forehead temperature exceeds 35
℃
, there is a possibility of fever.
For other environmental temperature conditions, it is recommended to measure several samples on site,
and increase 1
℃
as the alarm threshold on the basis of normal forehead temperature.
The human body temperature measurement requires high precision, which requires high
installation mode, environment and debugging. Please read this article carefully.
Combined with the support experience of the thermal imaging R & D technical support team,
this manual describes the installation requirements, common operations and precautions during the actual
use of thermal imaging products, so as to facilitate the quick start and reduce unnecessary problems. For
more detailed instructions, please refer to the product manual and quick operation manual.
The content described in this article needs to be analyzed in combination with the actual field equipment,
which is not the only way. If you have any questions or good suggestions, please contact Xu Fangrong
(Short NO: 693802), Fang Lu (Short NO: 685718), Li Fuxiang (Short NO: 638137), Fang Shengdong
(short: 669126).
⚫
This manual is only for internal use of Dahua employees. Please do not directly provide it to
customers or publish it to public platforms such as the Internet.
⚫
Reading objects include (but not limited to): Solution Engineer, Pre-sale / in-sale / after-sale technical
support engineer, installation and debugging personnel, product engineer, test engineer, marketing
and sales personnel and other internal personnel of the company
