A Method to Locate Tree Positions Using Ultrawideband Technology

Table 1

Descriptive statistics of the device’s components¹.

Component	Chip model/type	Interface type	Parameter	Function
Microprocessor	STC15W4K56S4	Digital, serial port, SPI, etc.	SRAM: 4 KB; flash: 56 KB data processing	Microprocessor
Power management circuit	TP4056, AMS1117, etc.	Digital, power	Input: 3.7 V-4.2 V, 5 V; output: 5 V, 3.3 V	Power management
Battery	Lithium battery	Power	4000 mAh	Power supply
Gyroscope module	JY901B	Serial port	Resolution: 0.01°	Attitude measurement
Compass module	GY-26	Serial port	Resolution: 0.1°	Azimuth measurement
UWB module	D-DWM-PG1.7	Serial port	Resolution: 1 cm; range: 0-50 m	Distance measurement
Display	OLED	SPI	pixels	Data display
Keyboard	PVC	Digital	6 keys	Data recording
SD card	Micro SD	SPI	2 GB	Data storage
Bluetooth	HC-06	Serial port	Range: 0-15 m	COMM with upper computer

¹SPI: serial peripheral interface; SRAM: static random-access memory; KB: kilobyte; V: voltage; mAh: milliampere-hour; GB: gigabyte; COMM: communication.