$6.5 Buy It Now or Best Offer
free,30-Day Returns
Seller Store sznykj
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Location: 中国
Ships to: US,
Item: 395576862700
Restocking Fee:No
Return shipping will be paid by:Buyer
All returns accepted:Returns Accepted
Item must be returned within:30 Days
Refund will be given as:Money Back
品牌:QXNY
制造的国家/地区:中国
材料:ABS
连接性:有线
MPN:11
Cable length::2.3M/7.54in
qxny:qxny
Opening diameter:18mm/0.7in
經濟鵵��:全新
Type:Parking Sensor
Connectivity:Wired
Note: 1: The sensor detection capability and parameters are determined by the connected control box! 2: The sensor cable length should not exceed 10 meters/32.8 feet. If it exceeds the range, there may be random alarms. 3: The sensor opening diameter is 18MM/0.7in. 4: The sensor has an angle and an UP mark on the back of the sensor. By rotating the sensor, the detection angle can be slightly adjusted. Installation note: 1: The installation height of the sensor is 50CM from the ground 2: The sensor is perpendicular to the ground and cannot be tilted. Sensor knowledge: (for learning only) In order to study and use ultrasonic waves, many ultrasonic generators have been designed and made. Ultrasonic sensors, reversing radar sensors, Ultrasonic hair sensors can be divided into two categories 1： The first type is to generate ultrasonic waves electrically, 2： Ultrasonic waves are generated mechanically At present, the piezoelectric ultrasonic generator is more commonly used. It has two piezoelectric wafers and a resonance plate. When the pulse 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 vibrate to produce ultrasonic wave. On the contrary, if no voltage is applied between the two electrodes, when the resonance plate receives ultrasonic wave, The piezoelectric wafer will be compressed for vibration and the mechanical energy will be converted into electrical signals. At this time, it will become an ultrasonic sensor Reversing radar ranging: the reversing radar sensor sends out an ultrasonic signal at a certain time, reflects it back when it meets the measured object, and is received by the reversing radar. As long as the time from transmitting to receiving the echo signal of the ultrasonic signal is calculated, and the propagation speed in the medium is known, the distance from the measured object can be calculated:
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