摘要
针对电器设备随着环境的变化与寿命的减少,其绝缘水平将降低的现状。设计了以STC12C5A60S2单片机为控制核心,简易的高频开关电源做500 V测量电源,采用串联法的绝缘电阻测试仪。给出了系统原理及软硬件设计流程,通过试验表明,该测试仪具有稳定的高压输出、测试误差在5%以内、操作简单以及成本低廉等优点。
Aiming at the actuality that the electrical equipment will cut lifespan with the change of environment and the insulation level will reduce, this paper designed a simple high frequency switching power supply as the 500 V testing power supply with microcontroller STC12C5A60S2 as the controlling core. The insulation resistance tester with series process was adopted and the system principle and the fl owchart of software and hardware were given. The experiment shows that the tester has many advantages, such as stable high-voltage output, test error within fi ve percent, easy operation and low costs.
出处
《电工电气》
2015年第7期46-49,共4页
Electrotechnics Electric
关键词
绝缘电阻
单片机
开关电源
串联法
insulated resistance
microcontroller
switching power supply
series process
