一、產(chǎn)品簡介
超聲波測距傳感器利用聲波介質(zhì)對被檢測物進行非接觸式和無磨損的檢測。超聲波傳感器對無論是透明性的物體還是有顏色的物體，金屬物體或者非金屬物體、以及固體、液體或是粉狀物質(zhì)，均能檢測。周圍環(huán)境條件如有煙環(huán)境、灰塵環(huán)境或是下雨條件下幾乎都不會影響超聲波傳感器的檢測性能。
One. Product introduction
By using acoustic media of the tested non-contact and no wear test, Ultrasonic sensors can detect transparency of the object or colored objects, metallic objects or non-metallic objects, as well as solid, liquid or powder material, can detect. Ambient conditions such as smoke, dust environment or under the condition of rain almost does not affect the detection performance of ultrasonic sensor.
二、超聲波測距原理
發(fā)射超聲換能器發(fā)射出的超聲脈沖，通過傳播媒質(zhì)傳播到被測介質(zhì)，經(jīng)反射后再通過傳聲媒質(zhì)返回到接收換能器，測出超聲脈沖從發(fā)射到接收在傳聲媒質(zhì)中傳播的時間。再根據(jù)傳聲媒質(zhì)中的聲速，就可以算得從換能器到介質(zhì)面的距離。從而確定液位。因此我們可以計算出探頭到反射面的距離D ＝ C*t/2(除以2是因為聲波從發(fā)射到接收實際是一個來回，D是距離，C是聲速，t是時間）。
Two. the principle of ultrasonic ranging
Launch of the ultrasonic transducer emit ultrasonic pulse, spread through transmission medium to be measured medium, after reflection by sound transmission medium again returns to the receiving transducer, ultrasonic pulse is measured from the launch to receive in the transmitted time of sound transmission medium. then according to the speed of sound, sound transmission medium can calculate the distance from the transducer to the media. To determine the liquid level. So we can calculate the probe to the reflection surface distance D = C * t / 2 (divided by 2 is because the sound waves from transmitting to receiving actual is a back and forth, D is the distance, C is the velocity of sound, t is the time).
安裝注意事項
(1)超聲波傳感器安裝時發(fā)射面應(yīng)垂直于被測物體；
(2)電源線和輸出信號線不要接反。
超聲波測距傳感器英文版說明書下載鏈接：
