NO POWER/WIRELESS SENSOR USING MAGNETIC DISTURBANCE DETECTION BY ULTRASONIC SPACE VIBRATION AND SYSTEM USING THE SENSOR

摘要

The invention and using a non-powered wireless sensors and their sensor using a magnetic disturbance is detected by the ultrasonic vibration space . discloses a sensing system ;, and a non-powered wireless sensor system using the magnetic field disturbance is detected by the ultrasonic vibration of the present invention, space for ultrasonic generation unit to generate an ultrasound output; Depending on the pressure applied from the outside to alter the characteristics of the magnetostrictive material thin film to generate a magnetic field surrounding the change, the energy level of the magnetic field changes due to the magnetostrictive material thin film by vibrating the magnetostrictive material thin film according to the ultrasound is applied upon application of the ultrasonic sensor portion to elevate; And sensing the magnetic field changes caused by the wireless sensor unit and provided with a measuring unit for measuring the amount of pressure applied to the sensor unit, when using ultrasound to detect the magnetic field changes due to the magnetostrictive sensor, sufficiently vibrate the magnetostrictive material by giving increasing the energy level of the magnetic field that varies according to the material to improve the sensing sensitivity makes it possible to easily detect changes of the magnetic field in the remote.