Ultrasonic sensing device and component

• Main Authors: TENG, KAOUN, LEE, CHENG-TA
• Format: Patent
• Language: Chinese; English
• Published: 01.05.2022
• Subjects: ANALOGOUS ARRANGEMENTS USING OTHER WAVES; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES; MEASURING; PHYSICS; RADIO DIRECTION-FINDING; RADIO NAVIGATION; TESTING

An ultrasonic sensing device includes: a signal generating/receiving circuit, a piezoelectric transducer unit and an inductor. The signal generating/receiving circuit has a transmitting terminal, a receiving terminal and a common terminal. The piezoelectric transducer unit has a first terminal and a second terminal. The inductor has a third terminal and a fourth terminal, wherein the third terminal is electrically connected to the transmitting terminal of the signal generating/receiving circuit, and the fourth terminal is electrically connected to the first terminal of the piezoelectric transducer unit. Furthermore, the receiving terminal of the signal generating/receiving circuit is electrically connected between the first terminal of the piezoelectric transducer unit and the inductor, and the common terminal of the signal generating/receiving circuit is electrically connected to the second terminal of the piezoelectric transducer unit.