We develope ZnO:Li as lead-free piezoelectric materialssuccessfully develop lead-free piezoelectric MEMS accelerometers through MEMS process technology. Since the input signal of the SAR ADC is voltage, Therefore, the charge generated by the accelerometer must be converted into a voltage signalthen transfer to the digital code from the SAR ADC.

The smoke removal device with smart detection has the capability of gas detectionindoor air circulation. The system is internally equipped with a sensing device. If an abnormal PM2.5 valuea high concentration of dangerous gas is detected, the fan can be automatically activated immediately to quickly filter the air,both preventivemonitoring functions can be achieved.

"1. The modular design of a electric breaker is proposed. A prototype of a solid-state circuit with an input voltage of 500 Vadjustable rated current including 50 A, 100 A, 150 A200 A. 2. Achieved zero-current cutoff within 110 µs using the characteristics of IGBTs to detect the current value. 3. A12 bits analog/digital converter is used to achieve a higher accuracy current detection effect when compared with the conventional analog circuit. It can also detect the fault current rising ratecorrespond to different protection delay times according to the different fault current rising rate, so that the components in the solid-state breaker can withstand a lower fault current."

This project is used for advanced driver assistance systems (ADAS)automatic driving. At present, our project will use a more sensitive CMOS single photon detector array to reduce the number of photons required for detection to less than ten, in order to break through the cost barriers of applications of LiDARestablish low-cost, high-performance LiDAR modules.

"The team established material doping technology to greatly improve the piezoelectric properties of lead-free materials,successfully prepared MEMS lead-free triaxial piezoelectric accelerometers. The use of lead-free materials is the world＇s first development result. In addition, the team also integrated sensors, back-end circuitsuser interfaces, applied the acceleration gauge system to the safety monitoring of unmanned vehicles,successfully integrated the intelligent integrated sensingcontrol system required in the Internet of Things era."