一种带记忆翻查功能的超声波测距仪设计

Design of an ultrasound range finder with memory retrieval function

本测距仪功能全面,具有记忆功能,可以记录最近4次测量结果,并可以通过按键翻查前3次的测量结果,在测量、参数设置和数据翻查时都有对应的指示灯指示,对测量者做出正确的判断提供依据;此外,本测距仪还具有盲区参数设置功能,利用盲区值来校准DAC输出电压。用户可根据DAC电压校准输出来判断是否处于测量盲区。

The range finder has comprehensive function,memory function,can record the last four measurement results,and can check the results three times before the key flip.It has corresponding indicator lights when measuring,parameter setting and data flip,which can provide basis for the correct judgement of the surveyor.It also has blind area parameter setting function,and uses blind area value to calibrate the output voltage of DAC.Users can judge whether they are in the blind area of measurement according to the output of DAC voltage calibration.