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该系统系以KC-85型便携式微处理机与SD-1型声波仪作主体组成的数字化声测系统。我们利用SD-1型声波仪具有A/D采样功能的特点,研制控制接口板及有关的软件,由微机控制采集离散声波振幅值及声时和有关的测量参数后,液晶屏幕显示采集的波形并通过四针绘图机绘出波形、振幅、波速及有关数据,并可连续循环进行数据采集。试验完毕打印绘出波速、振幅随孔深(或距离)的变化曲线,必要时亦可绘出声衰减系数随孔深的变化曲线,并可
The system is based on KC-85 type portable microprocessors and SD-1-type sounder as the main body of the digital sound measurement system. We use the SD-1-type sounder with A / D sampling features, the development of control interface board and related software, the computer-controlled acquisition of discrete sound amplitude and sound-related parameters and measurements, the LCD screen displays the waveform collected Draws the waveform, the amplitude, the wave speed and the related data through the four needle plotter, and can carry on the data collection continuously. After the test is finished, plot the wave velocity and amplitude with the depth of hole (or distance), and if necessary, draw the curve of sound attenuation coefficient with the depth of hole, and