Digital thermometer is basic need today, because of Corona we can't go to hospital more often, so better make use of this device to check if we have Fever. During this pandemic Digital thermometer has become basic need.
How does it work
Digital thermometer contain a small computing system and a resistor. A change in temperature causes the sensor to notice a change in resistance. The computer converts the difference in resistance into a difference in temperature and offers a digital readout in degrees.
The thermoresistor sensor is called a Thermistor.
Measurement Conversion
A digital thermistor thermometer provides an excitation voltage or current to the thermistor.
The excitation is converted to a voltage signal by the thermistor and the thermometer then converts the measured voltage to temperature.
Range of Thermometer Display.
32°–42°C
(89.6°–107.6°F).
Infrared thermometer
we can find infrared thermometer everywhere nowadays, without checking temperature we are not allowed anywhere .
Malls, hospitals, office , due to pandemic they make use of this infrared thermometer as safety measure to check the fever.In this device also we can find interesting electronics concept .
Mechanism of thermometer
An infrared thermometer is a sensor that consists of a lens to focus the infrared energy on to a detector,energy is converted to an electrical signal that can be displayed in units of temperature.
Its used to measure the temperature of a surface from a distance ranging from a few inches to few feet.
Infrared light works like visible light it can be focused on the surface,the surface absorbs the infrared radiation and turns into heat . heat is turned into electricity .The electricity is sent to a detector,which uses it to decide the temperature of the surface where IR is pointed.
 |
| Infrared Thermometer |
Future of thermometer.
wearable fever armband.
Wearable device that can check patients temperature continuously , when there is increase in fever it can send alarm directly to nurse or care taker.
