Design for Pool Alarm System Based on Pulse-width Anti-narrow
(0) In order to reduce child drowning in the unattended ponds or swimming pools,a design method of a pool alarm system is proposed.The design of hydrophone probe was simplified by making the sealed probe model up of rigid plastic pipe,pond surface,piezoelectric ceramic and other elements. The influence on measurement accuracy caused by many factors such as vibration was weakened through adopting the differential equipment amplifier.The application scope of system was widened by using programmable amplifier.The alarm accuracy was increased and the miss rate was decreased because of adopting pulse-width anti-narrow filter.The experimental results indicate that the system has a good applicability and the accuracy of alarm is over 98％.
pulse-width anti-narrow piezoelectric ceramic differential equipment amplifier
Zheng Dechun Chen Haiyan Zhang Xuejun
Ningbo university of technology,electronic and information school,Ningbo Zhejiang 315016 China
国际会议
西安
英文
2007-08-16（万方平台首次上网日期，不代表论文的发表时间）