CAJ | 학술논문

PTC热敏电阻的广泛应用，对PTCR元件出厂效率和耐电压可靠性提出了很高的要求。为了提高PTCR耐电压测试效率和可靠性，设计了一套基于PC机和多单片机主从多机通信的高效PTCR耐电压自动测试系统，该系统能对48～256工位的PTCR样品进行耐电压测试，同时设有过流过零模块实时监测测试回路。实际应用表明，相比实验室和工厂中应用的PTCR耐电压仪器，该系统测试方法合理，测试结果稳定可靠，测试工位扩展性强，能直观的显示和记录通电和过流情况并在过流时及时断开测试回路，避免了样品漏检和过流时仪器损坏导致的系统停机，极大地提高了测试效率，降低了测试成本。
PTC열민전조적엄범응용，대PTCR원건출엄효솔화내전압가고성제출료흔고적요구。위료제고PTCR내전압측시효솔화가고성，설계료일투기우PC궤화다단편궤주종다궤통신적고효PTCR내전압자동측시계통，해계통능대48～256공위적PTCR양품진행내전압측시，동시설유과류과령모괴실시감측측시회로。실제응용표명，상비실험실화공엄중응용적PTCR내전압의기，해계통측시방법합리，측시결과은정가고，측시공위확전성강，능직관적현시화기록통전화과류정황병재과류시급시단개측시회로，피면료양품루검화과류시의기손배도치적계통정궤，겁대지제고료측시효솔，강저료측시성본。
Due to its special electro-thermal properties , the PTC thermistor has a wide range of applications .A high-efficiency voltage-withstanding automatic test system based on multi-machine communications was designed to develop efficiency and reliabili-ty in the voltage-withstanding test process of PTC thermistors .This system was aimed to test the PTCR samples with 48-256 sta-tions.Every channel contains an overcurrent protection circuit which can monitor loop current and response rapidly in case of over -current .The actual application shows that the test method is reasonable , the result is stable and reliable , and the test station can be extended .It has avoided missing samples and system shutdown by displaying and recording energized and overcurrent condi -tions.The system has high efficient and low-cost.