CAJ | 학술논문

在现代检测技术中,常常需要用数字电压表进行现场检测,将检测到的数据送入到微计算机系统,完成计算、存储、控制和显示等功能。因此,设计了一种实用的液晶显示数字电压表,其不仅能够对直流电压进行测量,还可以方便地进行量程的自动转换、与计算机通信等功能,并在液晶显示器上显示。该液晶显示数字电压表采用AT89S52单片机为控制平台,重点设计了量程自动转换、A/D转换和液晶显示等硬件功能电路和系统软件。现场实验显示,该液晶显示数字电压表具有转换速度快、可靠性高、性能稳定等优点,具有很好的使用价值。
재현대검측기술중,상상수요용수자전압표진행현장검측,장검측도적수거송입도미계산궤계통,완성계산、존저、공제화현시등공능。인차,설계료일충실용적액정현시수자전압표,기불부능구대직류전압진행측량,환가이방편지진행량정적자동전환、여계산궤통신등공능,병재액정현시기상현시。해액정현시수자전압표채용AT89S52단편궤위공제평태,중점설계료량정자동전환、A/D전환화액정현시등경건공능전로화계통연건。현장실험현시,해액정현시수자전압표구유전환속도쾌、가고성고、성능은정등우점,구유흔호적사용개치。
In modern measuring technology,it is often required to conduct site measuring with a digital voltmeter.The data measured will then be input into the micro-computer system to execute such functions like calculating,storing,controlling and displaying.The paper mainly discusses the design principle and chief techniques of a LCD digital voltmeter.The control system of liquid crystal display digital voltmeter described in this paper uses AT89S52 SC computer to fulfill the designing of the software as well as the electrical circuit.It can not only measure the direct voltage with the meter,but also easily carry out the Auto Switch Measure Bound,communicate with PC and display the measurements.