Wireless temperature acquisition device based on LoRa technology
A technology of wireless temperature and acquisition equipment, applied in radio wave measurement systems, satellite radio beacon positioning systems, measurement devices, etc., can solve the problems of single positioning method, inability to save data, and short transmission distance, and achieve signal penetration. Strong, flexible network layout, low power consumption
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[0091] As an embodiment of the present invention, refer to figure 2 , the main control unit 1 includes: MCU controller U2, inductor L1, capacitors C14 and C15, and resistor R14; the model of MCU controller U2 is STM32L151, and inductor L1 is an inductor with a magnetic core or an iron core; the MCU controller Pin 8 of U2 is connected to one end of capacitor C15 and one end of capacitor C14 in turn, then grounded, the other end of capacitor C14 is connected to the other end of capacitor C15, and then connected to pin 9 of MCU controller U2, and pin 9 of MCU controller U2 Also connect one end of the inductor L1, the other end of the inductor L1 is connected to the power supply voltage 3.3V, the pin 20 of the MCU controller U2 is connected to one end of the resistor R14, the other end of the resistor R14 is grounded, and the pin 23, Pin 35 and pin 47 are respectively grounded, and pin 1, pin 24 and pin 36 of the MCU controller U2 are respectively connected to a power supply volt...
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