数字式RLC测量仪的设计说明

数字式 R、L、C 测量仪的设计任浩伟（理工学院 物理与电信工程学院 电子信息工程专业,20011 级 1 班， 723003）指导老师：梁芳[摘要]本设计以 AT89C52 单片机为核心，利用 555 多谐振荡原理，设计并制作了一个电阻、电感、电容测试仪。把模拟量转换成频率用单片机测量频率，易测量，且便于使仪表实现自动化，测量精度也高。单片机构成的应用系统有较大的可靠性。在电阻、电容、电感测试系统中，用 LED 来显示测量结果，既简单又显而易见。该设计不仅能够快速、自动测量，而且能够在 LED 上显示结果。经测试，该系统性能稳定，测量精度高，符合设计要求。[关键词]AT89C52；555 定时器；频率计Design of Digital Resistance, Inductance, Capacitance TesterRen Haowei (Grade 11,Class 1,Major electronics and information engineering,School of physics and electrical engineering,Shaanxi University of Technology,Hanzhong 723003,Shanxi)Tutor: Liang Fang[Abstract]This design takes the AT89C52 microcontroller as the core, uses the 555 multi - harmonic oscillation principle, designs and makes a resistance, inductance, the capacitance tester. The analog quantity is converted into the frequency of the frequency measurement, easy to measure, and easy to make the instrument automatic, and the measurement accuracy is also high. The application system of the monolithic integrated circuit has the big reliability. In the resistance, capacitance and inductance of the test system, LED is used to display the results, which is simple and obvious.. The design can not only be quick and automatic, but also can display the results on LED.. After testing, the system performance is stable, the measurement accuracy is high, and it accords with the design requirement.[Key words] 555Timers;AT89C52;Frequency meter目录引言 11 任务分析与方案确定 21.1任务分析21.2方案论证21.2.1 方案一 21.2.2 方案二 31.2.3 方案确定 42 系统硬件设计 52.1 电阻测量部分52.1.1 原理分析 52.1.2 具...