便攜式絕緣電阻測試儀的設計
陳杏燦,程漢湘,彭湃,冼冀
(廣東工業大學 自動化學院,廣東 廣州 510006)
摘 要: 針對電器設備隨著環境的變化與壽命的減少,其絕緣水平將降低的現狀。設計了以STC12C5A60S2 單片機為控制核心,簡易的高頻開關電源做500 V 測量電源,采用串聯法的絕緣電阻測試儀。給出了系統原理及軟硬件設計流程,通過試驗表明,該測試儀具有穩定的高壓輸出、測試誤差在5%以內、操作簡單以及成本低廉等優點。
關鍵詞: 絕緣電阻;單片機;開關電源;串聯法
中圖分類號:TM934.3 文獻標識碼:A 文章編號:1007-3175(2015)07-0046-04
Design of Portable Insulation Resistance Tester
CHEN Xing-can, CHENG Han-xiang, PENG Pai, XIAN Ji
(College of Automation, Guangdong University of Technology, Guangzhou 510006, China)
Abstract: Aiming at the actuality that the electrical equipment will cut lifespan with the change of environment and 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 flowchart of software and hardware were given. The experiment shows that the tester has many advantages, such as stable high-voltage output, test error within five percent, easy operation and low costs.
Key words: insulated resistance; microcontroller; switching power supply; series process
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