Piezoelectric-based sensor and controller for piezoelectric transducer

• Main Authors: HORSKY PAVEL, SUCHY TOMAS, HUSTAVA MAREK, KUTEJ JIRI, AXMAN ZDENEK
• Format: Patent
• Language: Chinese; English
• Published: 19.03.2019
• 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; MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC ORINFRASONIC WAVES; MEASURING; PHYSICS; RADIO DIRECTION-FINDING; RADIO NAVIGATION; TESTING

The present invention relates to a piezoelectric-based sensor and a controller for a piezoelectric transducer. The purpose of one aspect of the present application is to facilitate detection and identification of various potential fault states. According to one aspect of the present application, a piezoelectric-based sensor is provided and characterized in that the piezoelectric-based sensor includes a piezoelectric transducer that provides residual reverberation after being driven; and a controller that provides a low impedance path for the piezoelectric transducer during the residual reverberation and measures current through the low impedance path to determine a resonant frequency of the piezoelectric transducer. The technical effect of one aspect of the present invention is that the piezoelectric-based sensor or the controller facilitates detection and identification of various potential fault states. 本发明涉及基于压电的传感器及用于压电换能器的控制器。本发明的个方面的目的是便于检测和识别各种潜在的故障状态。根据本申请的个方面，提供了基于压电的传感器，其特征在于包括：压电换能器，所述压电换能器在被驱动之后提供