Qxny Embedded Flat Car Parking r Parktronic Re Probe Ulsonic Matte BlaGrey Silver for Backup Rada

Product List:   2.5M cable r * 1(The distance of the r is determined by the control box!)By turning, the length of the r can be stretched!r knowledge: (for learning only)In order to study and use ulsonic waves, many ulsonic s have been designed and made. Ulsonic , ,Ulsonic hair can be divided into two categories1: The first type is to generate ulsonic waves electrically,2: Ulsonic waves are generated mechanicallyAt present, the piezoelectric ulsonic is more commonly used. It has two piezoelectric wafers and a resonance plate. When the signal is applied at its two poles and its frequency is equal to the natural oscillation frequency of the piezoelectric wafer, the piezoelectric wafer will resonate and drive the resonance plate to e to produce ulsonic wave. On the conry, if no voltage is applied between the two electrodes, when the resonance plate receives ulsonic wave, The piezoelectric wafer will be compreed for ion and the mechanical energy will be converted into electrical signals. At this time, it will become an ulsonic r ranging: the r sends out an ulsonic signal at a certain time, reflects it bawhen it meets the measured object, and is received by the . As as the time from nsmitting to receiving the echo signal of the ulsonic signal is calated, and the propagation speed in the medium is known, the distance from the measured object can be calated: