● APPLICATION FIELD
- Cranes and construction machinery
- Mobile machinery
- Agricultural machinery
- Mobile elevators and fire trucks
- Elevated platforms
- Robot applications
- Automatic Guided Vehicles (AGV)
- Automatic assembly machinery
- Boring and drilling applications
- Leveling and flattening
● MAIN FEATURES
- Integrated nine axis sensor and temperature sensor
- Low noise
- Bluetooth 5.1 wireless transmission
- Kalman filtering algorithm
- DC 3.0-4.2V battery power supply
- Real time 3D dynamic measurement
- Maximum update rate of 100Hz
- High performance drift stability
- Long lifespan, strong stability
● FUNCTIONAL DESCRIPTION
1. Work indicator light: green;
Indicator light status:
- When turned on, the green light flashes for 2 seconds.
- When shutting down, the green light stays on for 2 seconds.
- During broadcasting, the green light flashes once every 2 seconds.
- After connecting to the host, the green light flashes once every 5 seconds.
2. Power on/off button: Press and hold for 1 second, the green light will flash for 2 seconds, indicating power on;
Press and hold for 1 second, the green light stays on for 2 seconds, indicating shutdown.
3. Type-C charging port: power 5V, current greater than 1A, Type-C interface.
After the first power on, the tilt angle enters the Bluetooth broadcast state, and the green light flashes once
every 2 seconds. Turning on the host Bluetooth can scan and discover the slave and connect it. If there is no
host to connect after 180 seconds, the tilt angle broadcast will timeout and enter the standby sleep state. If
the tilt angle sensor is moved (the wake-up sensitivity depends on the threshold setting) to wake up from the
sleep state, the Bluetooth broadcast will start again and wait for the host to scan and connect.
If the host is successfully connected, the slave will transmit tilt data to the host. At this time, the green
light will flash once every 5 seconds. If a connection timeout event occurs (4 seconds), the tilt will start
broadcasting again.
● PRODUCT DESCRIPTION
The BDA446 is a Bluetooth 9-axis dynamic attitude sensor designed for real-time motion tracking and 3D attitude
measurement in mobile equipment. Integrating a 3-axis accelerometer, 3-axis gyroscope, and 3-axis magnetic
sensor with Kalman filtering and temperature compensation, it delivers stable attitude data under dynamic
operating conditions.
Supporting Bluetooth 5.1 and BLE wireless communication, the BDA446 enables data transmission over distances of
up to 40 meters in unobstructed line-of-sight environments. In addition to attitude angles, it provides
three-axis acceleration and angular velocity data. Adjustable system parameters and BLE wireless firmware
upgrades (DFU) offer flexibility for equipment integration and field maintenance.
● SPECIFICATIONS
| BDA446T |
Condition |
Parameter |
| - |
Roll±180°, pitch±90°, azimuth±180° (initial value at power-down is 0°) |
| - |
X axis / Y axis / Z axis |
| @25℃ |
±0.05° |
| @25℃ |
±0.1° |
| - |
±300°/s |
| - |
8.5°/h |
| - |
0.25°/sqrt(h) |
| - |
±4g / ±16g Can be set |
| - |
0.1mg |
| - |
0.005mg |
| - |
0.005m/s/sqrt(h) |
| -20~65℃ |
±0.01°/℃ |
| -20~65℃ |
≤100ppm/℃ |
| ≤3.5S |
| 0.01S |
| According to EN61000 and GBT17626 |
| -96dBm |
| 8dBm |
| 40m(In an open and unobstructed state) |
| About 30 days (at 25 ℃, working for 8 hours a day, sleeping for 16 hours) |
| ≥ 100 megaohms |
| 100g@11ms Triaxial (half sine wave) |
| 10grms / 10~1000Hz |
| IP67 |
| ABS plastic shell |
| ≤ 570g (excluding cable) |
|
1) Accuracy: Refers to the root mean square difference between the measured value and the
actual angle error obtained by measuring the angle multiple times (>16 times) at room
temperature.
2) Zero point temp. Coefficient: refers to the rate of change in the displayed value of a
sensor relative to normal temperature within its rated operating temperature range when it
is in a zero state.
3) Sensitivity temp. Coefficient: refers to the percentage of full-scale indication of a
sensor relative to full-scale indication at room temperature within its rated operating
temperature range, and the rate of change with temperature.
|
BDA446 Bluetooth Dynamic Attitude Sensor – FAQs
1. Is the BDA446 suitable for dynamic environments with vibration and movement?
Yes. The BDA446 integrates a 9-axis sensor system and Kalman filtering algorithm to support dynamic attitude
measurement in moving equipment and vibration-related applications.
2. What is the maximum data update rate of the BDA446?
The BDA446 supports a maximum update rate of 100 Hz, making it suitable for applications requiring frequent
real-time attitude data updates.
3. What Bluetooth communication range does the sensor support?
The BDA446 uses Bluetooth 5.1 and BLE communication with 2.4 GHz adaptive frequency hopping. Its wireless
transmission distance can reach up to 40 meters in unobstructed line-of-sight environments.
4. What power supply does the BDA446 require?
The BDA446 operates with a DC 3.0–4.2V battery power supply. Engineers should ensure that the input voltage
remains within the specified range.
5. Does the BDA446 support wireless firmware upgrades?
Yes. The sensor supports BLE DFU (Device Firmware Update), allowing firmware upgrades through Bluetooth wireless
communication.
6. Can the BDA446 be integrated into existing control systems?
The BDA446 supports adjustable and expandable operating parameters. Its attitude, acceleration, and gyroscope
data can be used for integration into different equipment platforms. Communication interface compatibility
should be confirmed according to the project requirements.
7. Which applications are suitable for the BDA446 Bluetooth attitude sensor?
The BDA446 is suitable for robotics, AGVs, agricultural machinery, construction vehicles, forklifts, cranes,
mobile elevators, drilling equipment, and automated machinery requiring dynamic attitude monitoring.
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