NTC Thermistor Temperature Sensor Applied to Electronic-Cigarette Temperature Control
In e-cigarettes, "heating wire" is an important component, responsible for heating, evaporation of smoke oil, thereby generating fog.
TC is (Temperature Control), in the field of electronic cigarettes, refers to an electronic cigarette that appeared in 2015 new features, and the "pressure regulating" mode, Temperature Control is also hosting one of the ways in which the output.
In practical applications, the temperature control technology of e-cigarettes is not like other fields, such as cars, which use temperature sensors to detect temperature. But by the host NTC chip calculation to the change of resistance of the NTC thermistor temperature conversion information, so in fact the electronic cigarette temperature control is based on the NTC thermistor resistance changes, is not judge the actual temperature.
The resistance of the metal is not always fixed and it will change with the temperature change.
At present, the temperature control technology of electronic cigarettes is based on this characteristic of metal to achieve the temperature control function.
Each kind of material "TCR" value is different, so if you use different material of the coil, the NTC chip inside host must have corresponding to this kind of material which is the data, can according to the initial resistance through conversion coefficient of the coil after changing the resistance of the corresponding temperature.
To get the correct temperature control experience, you must use the mode corresponding to the material of theNTC thermistor wire, that is, the nickel coil cannot use the titanium mode, and the titanium coil cannot use the 316 mode.
Although it can work, but because of the metal which is the temperature coefficient of resistance change is different, so it can't get the material of the NTC thermistor temperature correctly, will lose the meaning of "Temperature Control".