The BZ5682 digital three-axis accelerometer is a sensor used for vibration measurement. Sensors can measure vibration acceleration, velocity, and displacement in three directions: X-axis, Y-axis, and Z-axis. They can also measure 10 parameters including acceleration average, variance, root mean square, peak, degree, pulse factor, waveform factor, prediction factor, centroid frequency, and mean square frequency.

1. The significant advantages of facing applications.

For large equipment currently in use on site, installing sensors on the surface of the structure can bring many application problems, such as inconvenient cable laying.

The BZ5682 digital three-axis acceleration sensor has the following significant advantages.

1. No cable connection required:Use wireless digital communication to exchange data.

2. No need to replace battery:The sensor is powered by an external energy harvesting power source. The sensor does not need to be replaced within its service life.

3. No need for massive data transmission:Sensors calculate and process large amounts of collected data, outputting concise results without the need to directly upload massive amounts of data.

4. No need to consume port energy:All sensors come with their own energy harvesting power supply, which is environmentally friendly and does not require energy from ports. Beneficial for the construction of green ports.

1. Multiple parameter digital outputs.

Vibration sensors analyze, process, and calculate sampled data to obtain various parameters. There is no need to upload the sampled data directly. Ten parameters can express various vibration characteristics of the measured object.

2. Long term stability.

The internal chip of the vibration sensor has undergone chip level calibration before leaving the factory, which can ensure long-term stability.

3. Temperature stability.

The temperature stability of the vibration sensor is controlled within 0.01%/℃.

4. Resolve high integration anti-interference issues.

Small analog signals of strain conversion, high-frequency digital signals of microcontrollers, and higher frequency radio transmission signals are collected in a narrow space. It can ensure that MEMS chips face digital signals at close range without interference.

5. Design sensors with ultra-low energy consumption.

The wireless communication module of the sensor adopts a time-sharing communication method, reducing the average power from 25 milliwatts to 0.2 milliwatts. The power consumption of the vibration sensor chip is less than 0.5 milliwatts, minimizing power consumption to the maximum extent possible.

6. Resolve the energy supply issue of sensors.

Install an energy harvesting power supply to power the sensor. Energy harvesting power sources collect light energy, vibration energy, and electromagnetic energy in batteries. At present, in the design of this project, light energy is collected and converted into electrical energy. The solar weak panel has an area of 60mm x 60mm and does not need to face the sun. It can meet the electricity consumption of this project in any direction during the day. When light energy is converted into electrical energy, the intensity of light changes over time, and the converted electrical energy also changes over time. An energy harvesting chip is used to decompose the changing electrical energy into stable charging voltage and changing current to charge the battery.

Main technical indicators.

1. Acceleration measurement range: ± 16g.

2. Acceleration resolution: 0.01m/s².

3. Speed resolution: 0.01mm/s.

4. Displacement resolution: 0.01 μ m.

5. Non linearity: 0.5%.

6. Maximum lateral sensitivity: 1%.

7. The frequency range of output data is 5-1000Hz.

8. Data processing time interval: 10-90 seconds. Factory setting: 10 seconds

9. Wireless communication data transmission rate: 115200b/s.

10. Wireless communication frequency band: 433MHz.

11. Wireless transmission power: 6.25, 12.5, 25, 50, 100mW can be set. Factory setting: 25mW.

12. Wireless reception sensitivity: -100dB.

13. Wireless communication time interval: adjustable from 15 to 45 minutes. Factory setting: 20 minutes.

14. Working temperature range: -40~+80 ℃.

15. Sealing grade: IP67.

16. Dimensions: 70mm * 90mm * 50mm.

17. Weight: 150g.

18. Installation method: adhesive.

19. Digital output data: effective speed, peak acceleration, peak displacement, with 10 adjustable parameters. Factory settings: Effective speed value.

20. Regular calibration: not required. We have performed chip level calibration at the factory.

21. Other contents of digital communication: refer to the "Communication Protocol".