Mask-type beauty instruments are often used to improve the condition of the skin and are very popular in the beauty industry. In recent years, with the development of the beauty industry, more functions have been added to the mask-type beauty instrument to enrich the use scenarios, such as relaxing facial muscles and relieving eye fatigue through heating. In order to avoid the risk of burns to the user, NTC thermistors are usually added to the mask-type beauty instrument for temperature control and monitoring to ensure the safety of users.

Why does the mask-type beauty instrument choose NTC thermistor as the component of temperature monitoring? It is mainly to use its temperature-sensitive characteristics to carry out proper temperature control and temperature measurement in the working process of the beauty instrument, so as to effectively avoid over-temperature damage to the user's skin, and at the same time ensure great use effect. Specifically:

First, temperature control and monitoring
Mask-type beauty instruments generally use heating film as heating source, which is electrically connected with PCB and NTC thermistor respectively. When the beauty instrument starts working, the thermistor starts real-time temperature monitoring. Since the temperature data output by the NTC is an analog signal and cannot be transmitted directly to the MCU, it will be converted to digital data by the ADC and transmitted to the MCU. Based on the feedback information, the MCU compares it with the user’s set temperature, and adjusts the current/voltage input to the heating film through the controller. When the temperature exceeds the set value, the controller will automatically reduce the input power to prevent the temperature from continuing to rise; When the temperature drops below the set value, the controller will increase the input power and raises the temperature.

Second, over-temperature protection
Since the mask-type beauty instrument is in direct contact with the human skin, excessive temperatures may cause facial burns. So the MCU sets a temperature threshold, and once the NTC thermistor detects that the temperature exceeds the threshold, it triggers protection mechanisms, such as automatically shutting off the power supply or reducing the power output, to prevent accidents.

Third, extend the service life
The precise temperature control of the NTC thermistor can also be used to prevent overheating caused by long-term use, which can help extend the life of the mask-type beauty instrument and reduce maintenance costs.

To sum up, NTC thermistor plays a vital role in mask-type beauty instrument. It not only provides the necessary temperature feedback for the heating process of the beauty instrument, but also effectively guarantees the safety of the product and enhances the user's experience. In order to ensure accurate temperature control, EXSENSE Electronics Technology Co., Ltd. recommends miniature insulated lead NTC thermistor, which has high temperature measurement accuracy and can stably monitor the temperature when the mask-type beauty instrument is working. In addition, the small head size of this thermistor makes the response time faster than that of other NTC components, ensuring the excellent sensitivity of the beauty instrument's temperature measurement. The miniature insulated lead NTC thermistor also supports parameter customization, customers can choose the parameters and sizes that meet their needs according to the design scheme of the mask-type beauty instrument.