This paper proposes a novel bidirect i o nal anti-theft alarm scheme through detecting the magnetic field.The theoretical background and analysis of the approach of anti-theft alarm are pre sented.The circuit of burgl...This paper proposes a novel bidirect i o nal anti-theft alarm scheme through detecting the magnetic field.The theoretical background and analysis of the approach of anti-theft alarm are pre sented.The circuit of burglar alarm is designed,fabricated and tested,and C language program is implemented and debugged.Feasibility of the de veloped scheme is proved by the experiments.展开更多
Produced by the Beijing Taidu Automobile Safety Equipment Manufacture Co. Ltd., the Taidu electronic anti-theft alarm system has a single key system and easy operation. The system has a cover to protect it from accide...Produced by the Beijing Taidu Automobile Safety Equipment Manufacture Co. Ltd., the Taidu electronic anti-theft alarm system has a single key system and easy operation. The system has a cover to protect it from accidental triggering. Indicators display its remote control function, controlling all the locking and unlocking actions for an automobile’s doors within a range of 50 metres. The system has a展开更多
油水界面监测是保证储卸油顺利进行,油水置换工艺安全可靠的关键。针对一种新型的深水立柱式Spar钻井生产储卸油平台(spar drilling production storage offloading,简称SDPSO)的特点,在综述储油舱液面监测方法及1:40模型试验液面监测...油水界面监测是保证储卸油顺利进行,油水置换工艺安全可靠的关键。针对一种新型的深水立柱式Spar钻井生产储卸油平台(spar drilling production storage offloading,简称SDPSO)的特点,在综述储油舱液面监测方法及1:40模型试验液面监测方法基础上,对其进行油水界面监测方案研究。使用连续监测与高位/低位警报位置监测相结合的方式是适宜的,考虑到实际应用时的系统安全,对连续监测及高位/低位报警监测须至少设置两种独立的监测方式:连续监测采用流量计及压差法监测,高位/低位警报位置监测采用射线法、电容式方法、振棒物位开关监测。另外考虑到监测系统的可靠性,对每种检测装置需设置备用的监测回路。展开更多
基金National Natural Science Foundation of China (No.51105267, No.91123036)China Postdoctoral Science Foundation(No.2011M500542, No.2012T50248)+2 种基金National Research Foundation for the Doctoral Program of Higher Education of China(No.20111402120007)Shanxi Provincial Foundation for Returned Scholars (No.2011x10)863 Project (No.2011AA040404, No.2013AA041109)
文摘This paper proposes a novel bidirect i o nal anti-theft alarm scheme through detecting the magnetic field.The theoretical background and analysis of the approach of anti-theft alarm are pre sented.The circuit of burglar alarm is designed,fabricated and tested,and C language program is implemented and debugged.Feasibility of the de veloped scheme is proved by the experiments.
文摘Produced by the Beijing Taidu Automobile Safety Equipment Manufacture Co. Ltd., the Taidu electronic anti-theft alarm system has a single key system and easy operation. The system has a cover to protect it from accidental triggering. Indicators display its remote control function, controlling all the locking and unlocking actions for an automobile’s doors within a range of 50 metres. The system has a
文摘油水界面监测是保证储卸油顺利进行,油水置换工艺安全可靠的关键。针对一种新型的深水立柱式Spar钻井生产储卸油平台(spar drilling production storage offloading,简称SDPSO)的特点,在综述储油舱液面监测方法及1:40模型试验液面监测方法基础上,对其进行油水界面监测方案研究。使用连续监测与高位/低位警报位置监测相结合的方式是适宜的,考虑到实际应用时的系统安全,对连续监测及高位/低位报警监测须至少设置两种独立的监测方式:连续监测采用流量计及压差法监测,高位/低位警报位置监测采用射线法、电容式方法、振棒物位开关监测。另外考虑到监测系统的可靠性,对每种检测装置需设置备用的监测回路。
