Jump to the main content block
:::

The Development of Lead-Free Piezoelectric MEMS Triaxial Accelerometer Systemfor Safety Monitoring of Unmanned Vehicles

無人載具安全監控之無鉛壓電MEMS三軸加速規系統開發

The Development of Lead-Free Piezoelectric MEMS Triaxial Accelerometer System​for Safety Monitoring of Unmanned Vehicles​

_______________________________________________________________________________________________

  Due to the rising global environmental awareness, the regulations for lead-containing products are becoming stricter, such as the EU's RoHS hazardous substances restriction regulations. In the future, lead-containing products will be gradually eliminated, and lead-free products will become the mainstream of the future market.

  Our team established material doping technology to greatly improve the piezoelectric properties of lead-free materials, and successfully fabricated MEMS lead-free triaxial piezoelectric accelerometers. It has the advantages of small size, light weight, and heterogeneous chip integration technology and CMOS manufacturing process. Different from the previous MEMS three-axis piezoelectric accelerometers that use PZT lead-containing materials, the use of lead-free materials is the world's first development result.

  In addition, the team applied the accelerometer system to the safety monitoring of unmanned vehicles. This system includes sensing signals from unmanned vehicles through MEMS lead-free three-axis accelerometer components, converting analog signals into digital signals through a reading circuit and ADC circuit, then processing the signals through Arduino and Raspberry Pi, and passing the calculation results through Wireless transmission to the user's personal computer, real-time display of the safety monitoring information of the unmanned vehicle through the software of the user interface, including the amplitude, frequency and the health status of the unmanned aerial vehicle, this system can help the user to know the unmanned vehicle's body in real time security situation.

The team continues to integrate the upstream "piezoelectric accelerometer production", midstream "circuit and module design" and downstream "user platform development" to independently develop a set of Internet of Things system, opening up a new world of acceleration sensors path of.

圖1 加速規安全監控系統流程圖

Figure 1 Flowchart of accelerometer safety monitoring system

圖2 加速規安全監控系統使用者介面

Figure 2  Accelerometer safety monitoring system user interface

_______________________________________________________________________________________________

Author

Sheng-Yuan Chu

Department

Department of Electrical Engineering

E-Mail

chusy@mail.ncku.edu.tw

Click Num:
Add to Favorites
:::

subscribe E-news

Vol.34 NO.1(2022.2)-1 Author information

Author

 Department of Electrical Engineering,NCKU Professor 

Sheng-Yuan Chu

E-Mail

chusy@mail.ncku.edu.tw

Research members

NCKU EE Prof. Sheng-Yuan Chu

NCKU EE Prof. Soon-Jyh Chang

NCKU EE (Ph.D. degree program) Cheng-Ying Li,

NCKU EE (Master) Sin-Yu Ciou

Key words

Lead-free materials, drones, MEMS, accelerometers

Research areas

Prospective science & technology research

Download

The Development of Lead-Free Piezoelectric MEMS Triaxial Accelerometer Systemfor Safety Monitoring of Unmanned VehiclesThe Development of Lead-Free Piezoelectric MEMS Triaxial Accelerometer System​for Safety Monitoring of Unmanned Vehicles​