RESUMEN
Objective To design an electronic measuring instrument for height and weight.Methods The instrument detected the height with the principle of ultrasonic ranging and the weight with precision-balance-beam-like pressure sensor,which was composed of a weighing scale and a height measuring apparatus.The weighing scale consisted of a base,a weighing pedal and a holding chamber containing a drive motor,a towel cavity,a towel roller and a recovery roller.The height measuring apparatus was made up of a body,a connector,a multi-function expansion platform,an ultrasound measuring instrument,control knobs and a digital speech broadcast display.Results The measuring instrument shortened the examination time consumed,eliminated the hidden risks for cross infection and decreased the work load of medical staffs.Conclusion The instrument behaves well in design,convenience and accuracy,and thus is worthy promoting practically.
RESUMEN
Objective To design an electronic measuring instrument for height and weight.Methods The instrument detected the height with the principle of ultrasonic ranging and the weight with precision-balance-beam-like pressure sensor,which was composed of a weighing scale and a height measuring apparatus.The weighing scale consisted of a base,a weighing pedal and a holding chamber containing a drive motor,a towel cavity,a towel roller and a recovery roller.The height measuring apparatus was made up of a body,a connector,a multi-function expansion platform,an ultrasound measuring instrument,control knobs and a digital speech broadcast display.Results The measuring instrument shortened the examination time consumed,eliminated the hidden risks for cross infection and decreased the work load of medical staffs.Conclusion The instrument behaves well in design,convenience and accuracy,and thus is worthy promoting practically.