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Principle of body temperature measuring instrument(walk through temperature body scanner)
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Principle of body temperature measuring instrument(walk through temperature body scanner)

Views:46     Author:Site Editor     Publish Time: 2020-06-30      Origin:Site

Principle of body temperature measuring instrument(walk through temperature body scanner

The new coronavirus-infected pneumonia epidemic has made the Lunar New Year relatively deserted this year, but the guards on duty in the central main building are not idle. Not only do people who need to register need to register, but an important process is to use a handheld infrared thermometer to measure body temperature.

Human body temperature will change due to many conditions (illnesses), and measuring body temperature can detect and record abnormal conditions.

Normal body temperature is the average body temperature of most people under normal conditions, about 37°C (98.6°F). Each body temperature will float up and down by 1°F (0.6°C) above this normal value.

Changes in normal body temperature are related to your activity level and time of day, as well as to the secretion of hormones in the body. For example, when a woman ovulates or comes on vacation, her body temperature will increase and decrease more.

The temperature in the human body also varies. The temperature of the rectum or ear tympanic membrane is 0.3 to 0.6°C higher than that of the oral cavity, and the temperature of the armpit is 0.3 to 0.6°C lower.

Using an ordinary mercury thermometer generally requires 3 to 5 minutes in the mouth and armpits. It is relatively quick to measure body temperature by infrared method, and it only takes a few seconds to measure the temperature of forehead and eardrum.

Using an infrared temperature sensor to measure temperature seems simple. Align, press the button, and read the temperature value. However, if you do not grasp the measurement principles and methods, the measured temperature results will be very biased.

Temperature measurement methods can be divided into two categories: contact and non-contact. Contact sensors include thermocouples, thermistors, RTDs, and semiconductor temperature sensors. The signals output by these sensors actually reflect the changes in their own temperature, and they need to be in full contact with the object to be measured, so that their temperature is consistent.

In some cases, the use of contact temperature sensors will cause trouble, such as: the measured object or medium is in a remote place, or a dangerous environment, which is not easy to reach; the measured object is in motion; the measured object is very small, the temperature Will be affected by the sensor. Using non-contact temperature measurement methods can solve these problems.

[Principle of temperature detector]

We will also be exposed to many thermometers in our lives. For example, those who take body temperature have traditional mercury thermometers and higher-tech infrared

Line thermometer. In fact, the working principle of some different thermometers will be different. The design basis of our common thermometers mainly includes the following categories:

1. Use the principle of thermal expansion and contraction of objects because of temperature, such as mercury thermometer.

2. Use objects to produce different pressures due to temperature, such as pressure thermometers.

3. Use the resistance of the object to change positively or negatively due to temperature, various resistance thermometers.

4. Use thermal radiation, such as infrared thermometer.

Principle of body temperature detector

The pneumonia epidemic caused by the new coronavirus has made this year's Lunar New Year relatively deserted. On many occasions, we have seen staff use temperature detectors to test the temperature of passing people.

Human body temperature will change due to many conditions (illnesses), and measuring body temperature can detect and record abnormal conditions.

Normal body temperature is the average body temperature of most people under normal conditions, about 37°C (98.6°F). Each body temperature will float up and down by 1°F (0.6°C) above this normal value.

Changes in normal body temperature are related to your activity level and time of day, as well as to the secretion of hormones in the body. For example, when a woman ovulates or comes on vacation, her body temperature will increase and decrease more.

The temperature in the human body also varies. The temperature of the rectum or ear tympanic membrane is 0.3 to 0.6°C higher than that of the oral cavity, and the temperature of the armpit is 0.3 to 0.6°C lower.

Using an ordinary mercury thermometer generally requires 3 to 5 minutes in the mouth and armpits. It is relatively quick to measure body temperature by infrared method, and it only takes a few seconds to measure the temperature of forehead and eardrum.we provide walk through temperature body scanner,you can know it.

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