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What is the sensor?

       Heat releasing sensor is to temperature sensitivity sensor. It is consist of ceramic oxide or piezoelectricity crystal component, make the pole at surface of two components. When temperature ΔT changes in sensor detection zone, it can produce charge ΔQ in the two poles, also means produce little pressure ΔV. Because of its high output impedance, there is a field of domino offect changing in sensor. Heat releasing produced the charge ΔQ which disappear as ion combine in the air. That is to say, when environment temperature changed, produce ΔT=0, sensors will has no output. When man come to the checking zone, because of different temperature, so produce ΔT, can output; Heat releasing is the similar as the piezoelectricity, because temperature changing to make the crystal face charge.


 


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