SSJ-1型水位、水位差回声检测装置是基于声波的反射原理而制造的一种新型工业自动化检测仪表.其外形和内部结构分别如图1、图2所示. 一、声学原理 大家知道,声波从一种介质(如空气)传播到另一种介质(如水、墙壁)的界面时,会产生反射现象。我们在山谷之中或大厅之内大喊一声,则 SSJ-1-type water level, water level difference echo detection device is based on the principle of acoustic reflection and manufacture of a new type of industrial automation instrumentation.The shape and internal structure, respectively, as shown in Figure 1, Figure 2. First, the acoustic principle As we all know, Sound waves from one medium (such as air) to another medium (such as water, walls) interface, there will be reflections. We shout in the valley or in the hall, then