裝甲車車載設(shè)備絕緣電阻與開關(guān)導(dǎo)通狀態(tài)測試儀的研發(fā)
中國測試期刊
劉 曄， 鐔雄師， 陳 然， 錢夢驕， 劉亞光
（西安交通大學(xué)電氣工程學(xué)院，陜西 西安 710049）
摘 要：為解決傳統(tǒng)絕緣電阻與開關(guān)導(dǎo)通狀態(tài)測試儀在裝甲車車載電器設(shè)備檢測時效率低、精度差等問題，設(shè)計基于單片機、CPLD和觸摸屏的絕緣電阻與開關(guān)導(dǎo)通測試儀。系統(tǒng)具有準確迅速實現(xiàn)80路絕緣電阻巡回檢測與80路開關(guān)導(dǎo)通狀態(tài)判斷的功能，利用TOP242構(gòu)成反激式開關(guān)電源產(chǎn)生200 V/50 V直流測試電壓，觸摸屏作為人機界面，CPLD完成譯碼工作以控制繼電器開關(guān)矩陣動作；加入低通濾波器的放大電路有效提高了系統(tǒng)的抗干擾性能。實驗結(jié)果表明：該測試儀完全滿足裝甲車車載設(shè)備絕緣電阻和開關(guān)導(dǎo)通測試的精度要求，提高了測試效率。
關(guān)鍵詞：絕緣電阻測試；開關(guān)導(dǎo)通測試；單片機；CPLD器件；開關(guān)電源
中圖分類號：TM934.31；TJ811+.92；TP274；TP216 文獻標志碼：A 文章編號：1674-5124（2013）04-0069-04
Design of insulation resistance and switch logic tester for armored
vehicle equipments
LIU Ye， TAN Xiong-shi， CHEN Ran， QIAN Meng-jiao， LIU Ya-guang
（School of Electrical Engineering，Xi’an Jiaotong University，Xi’an 710049，China）
Abstract: In order to improve the efficiency and precision of the traditional insulation resistance and switch logic tester for armored vehicle equipments， a new design of tester based on MCU， CPLD and HMI touch panel was proposed. It can successively monitor 80-circuit insulation resistance and judge the switch logic’s status. In this system， MCU-51 controller is used as the core， and 200 V/50V DC test power is produced by fly-back switch power with a TOP242 chip. TPC touch screen serves as the human-machine interface and CPLD is responsible for decoding work. Low-pass filter circuits can greatly improve the anti-jamming capability. The experimental results have manifested that the system meets actual engineering requirements and it has greatly enhanced the testing efficiency.
Key words: insulation resistance test； switch logic test； MCU； CPLD； switching power supply
