Unit UWB
Description
UWB is a Unit which integrates the UWB(Ultra Wide Band) communication protocol which uses nanosecond pulses to locate objects and define position and orientation. The design uses the Ai-ThinkerBU01 Transceiver module which is based on Decawave's DW1000 design. The internal STM32 chip with its integrated ranging algorithm,is capable of 10cm positioning accuracy and also supports AT command control. Applications include: Indoor wireless tracking/range finding of assets,which works by triangulating the position of the base station/s and tag (the base station resolves the position information and outputs it to the tag).
The firmware currently carried by this Unit only supports the transmission of ranging information, and does not currently support the transmission of custom information. When in use, it supports the configuration of 4 base station devices (using different IDs), and only a single tag device is allowed to operate at the same time.
Features
- Positioning Accuracy :10cm
- Internal STM32 Integrated ranging algorithm
- AT Command control
- Serial communication (baud rate: 115200)
- Simple Usage,No need for RF Calibration
- IEEE 802.15.4-2011 UWB Standard
- Support two-way ranging and TDOA
- Development Platform: Arduino, UIFlow(Blockly, Python)
- 2x LEGO™ Technic friction pin holes
Includes
- 1x UWB Unit
- 1x HY2.0-4P Port
Applications
- Indoor tracking
- Accurate range finding
Specifications
| Resources | Parameter |
|---|---|
| Data transfer rate | 110 kbit/s, 850 kbit/s and 6.8 Mbit/s |
| frequency band | 6 frequency bands: from 3.5 GHz to 6.5 GHz |
| Transmit power | -14 dBm/-10 dBm |
| Transmit power density | <-41.3dBm / MHz |
| Support data packet size | 1023 bytes |
| Transmit power density | <-41.3dBm / MHz |
| Modulation method | BPM (two-phase modulation) and BPSK (binary phase modulation) |
| FDMA | 6 channels |
| Net Weight | 7g |
| Gross weight | 19g |
| Product Size | 48*24*8mm |
| Packaging Size | 136*92*10mm |
EasyLoader
EasyLoader is a concise and fast program writer, which has a built-in case program related to the product. It can be burned to the main control by simple steps to perform a series of function verification. Please install the corresponding driver according to the device type. M5Core host Please click here to view the CP210X driver installation tutorial, M5StickC/V/T/ATOM series can be used without driver)
PinMap
- Serial communication (baud rate: 115200)
| M5Core | U2RXD(GPIO16) | U2TXD(GPIO17) | 5V | GND |
|---|---|---|---|---|
| UWB Unit | TXD | RXD | 5V | GND |
Schematic
Related Link
Example
Arduino
UIFlow
Video
AT command set
Send a carriage return and line feed
\r\n at the end of each commandSetting AT commands
AT+switchdis=value
- Command description: Switch to control whether to range or not, valid only in tag mode
- Response:
- When value is equal to 0, turn off the range and return ok.
- When value equals to 1, turn on the range and return ok.
AT+interval=value
- Command description: Set distance measurement interval
- Response: OK
The range is 5-50 meters, the setting is how many times to get the data and then start outputting the distance, the larger the value the slower the refresh speed;
AT+version?
- Command description: Get manufacturer, module series and version number
- Response: "AIT-BU01-DB V000 T2020-4-17 OK"
AT+RST
- Command description: Reset Module
- Response: OK
AT+anchor_tag=model,ID
- Command description: Set the mode and ID of the device
- Parameters:
- Model 1 is to select anchor mode, 0 is to select tag mode
- ID sets the ID of the base station and tag
- Response: OK
//Base station mode
AT+anchor_tag=1,0
+anchor_tag=OK
AT+RST
+RST=OK
//Labeling mode
AT+RST
+RST=OK
AT+anchor_tag=0
+anchor_tag=OK
AT+interval=5
+interval=OK
AT+switchdis=1
+switchdis=OK
//Return distance measurement results
//....