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DS18B20 temperature sensor module
DS18B20 temperature sensor module is a wide temperature measuring range with high accuracy. The sensing range of DS18B20 is -55 ”ĘC to +125 ”ĘC. The accuracy is ”¾0.5 ”ĘC in the temperature range of -10 to +85 ”ĘC. The temperature sensor detects the temperature in front of the electric heating radiator to keep the temperature of the air and avoid the incidents of overheating. The temperature data can be called by the query command from the smartphone.
APP and Bidu voice recognition cloud system
Voice function are connected with the multiple api interfaces such as Baidu voice recognition cloud. The cloud was waked up and synthesized the voice signals. Therefore, a stable and accurate function of voice recognition is realized. There are two modes to control the microcontroller in the APP. One is manual, the other is voice controlled.
Active buzzer and HC-SR04 ultrasonic module
HC-SR04 ultrasonic ranging module can measure 2cm-400cm distance sensing function with 3mm accuracy. The function of anti-collision keeps 30 cm distance named safety range between carrier and obstruct. If the sensing distance is less than the safety range, buzzer sounds for warming and carrier stops for avoiding to collision.
Power
The electrical power of all the system is input into 220 V (ac) then the transformer and voltage converters supply +12 V (dc) and 5V(dc). +12 V (dc) is the power source of the carrier. +5 V (dc) is the power supply of the digital system which includes the microcontroller.
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IEEE/ICACT20210218 Slide.08
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