A sensor is equipment that converts a physical quantity into an electric signal which can be read by the measuring machine. A good and common example of a sensor is a mercury thermometer which converts body temperature into the mercury liquid that appropriately expands and contracts due to the heat. Another common example of a sensor is buttons in a lift or elevator. Sensors can be used in automobiles, in industrial machinery, in the aerospace industry, in the field of automaton manufacturing and more.
How to purchase an ideal sensor system?
In the industrial market of sensors manufacturers one shall come across numerous varieties of sensors out of which the best has to be chosen. So how can one ensure that the product in question is superior? An ideal sensor should be sensitive to only the thing being measured, should not be sensitive to any other physical quantities and should not manipulate the property being measured.
Sensor usually measures quantities in logarithmic measurement features and is either in a linear or non linear fashion. Sensors produce a digital analog signal which happens to be directly proportional to the value of the thing being measured. The sensitivity of the Sensor equipment is the ratio of the measured property and the signal output. Parking Sensors are widely used in modern automobiles.
The Various Kinds of Sensors:
There are hundreds of varieties of sensors but broadly speaking the various kinds are as given below:-
- Sound and vibration sensors (seismometer and hydrophone)
- Automotive sensors (radar gun, speedometer and oxygen sensor)
- Chemical sensors (breathalyzer, carbon sensor and holographic sensor)
- Electric current sensors (electroscope and galvanometer)
- Environment sensors (steam gauge, snow gauge and actinometer)
- Navigation instrument sensors (gyroscope and altitude sensor)
- Subatomic particle sensors (particle detector)
- Light sensors (photo detector, photo resistor, photodiode)
- Pressure sensors (barometer, Doppler radar)
- Temperature sensors (thermometer)
- Wireless sensors
- Motion sensors
All these are always high in demand, Two of the broadly used categories of sensors are Chemical sensors and Bio sensors.
The chemical sensors are machinery or devices for the purpose of conducting analysis and giving the user valuable information about the thing that is being analyzed. A biosensor is used in the medical fields of biotechnology and biomedicine for conducting analysis of biological parts.
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