便攜式絕緣電阻測試儀的設(shè)計
陳杏燦,程漢湘,彭湃,冼冀
(廣東工業(yè)大學(xué) 自動化學(xué)院,廣東 廣州 510006)
摘 要: 針對電器設(shè)備隨著環(huán)境的變化與壽命的減少,其絕緣水平將降低的現(xiàn)狀。設(shè)計了以STC12C5A60S2 單片機為控制核心,簡易的高頻開關(guān)電源做500 V 測量電源,采用串聯(lián)法的絕緣電阻測試儀。給出了系統(tǒng)原理及軟硬件設(shè)計流程,通過試驗表明,該測試儀具有穩(wěn)定的高壓輸出、測試誤差在5%以內(nèi)、操作簡單以及成本低廉等優(yōu)點。
關(guān)鍵詞: 絕緣電阻;單片機;開關(guān)電源;串聯(lián)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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