Foot bathtub and NTC temperature sensor.5.8G Frequency microwave module

　　With the improvement of quality of life, people are paying more and more attention to physical health, especially for foot health. As a result, foot baths are becoming increasingly popular among people. The foot bathtub is composed of a power interface, power supply control unit, pressure switch, foot bathtub, NTC temperature sensor, and MCU intelligent controller. The power supply output end of the power interface heating element is connected to the input end of the power supply control unit, and the power supply output end of the power interface controller is connected to the power supply end of the MCU intelligent controller; The output end of the power supply control unit is connected to the input end of the pressure switch, the output end of the pressure switch is connected to the input end of the foot bath heating element, the output end of the foot bath heating element is connected to the input end of the NTC temperature sensor, and the output end of the NTC temperature sensor is connected to the sensing input end of the MCU intelligent controller.

　　The heating temperature of the foot bathtub is generally between 40~50 ℃, but too high a temperature is not good. Therefore, an NTC temperature sensor is needed to monitor the problem. NTC temperature sensors for foot baths generally use NTC thermistors, which are semiconductor ceramic chip components made mainly of transition metal oxides such as manganese, cobalt, nickel, iron, copper, and other metal oxides. They have the characteristic of changing resistance values with temperature. As the temperature increases, the resistance value decreases, and its operating temperature range is -40~+125 ℃, suitable for foot bath heating.

Read recommendations:

MF52B series enamelled wire NTC thermistor

Building monitoring devices and NTC temperature sensors.Human Body Temperature Monitoring Sensor

PIR Lens 8120-4

PIR Lens 8603-4D

10.525G HW-MB07 millimeter wave radar sensor module