The disadvantages of seismic alarm only based on the amplitude of seismic wave are analyzed.
分析了单纯用地震波振幅作为报警阈值的缺点,通过数字地震仪与模拟地震仪报警机制的对比,提出用检测周期和振幅相结合的方法来实现地震报警。
In an array laser warning, two adjacent photodiode field-of-views (FOV) overlap and form overlapped FOVs.
在阵列式激光报警器中 ,相邻两光电二极管视场重叠 ,形成重叠视场。
In an array laser warning, two adjacent photodiode field-of-views (FOV) overlap and form overlapped FOVs.
在阵列式激光报警器中 ,相邻两光电二极管视场重叠 ,形成重叠视场。
infrared laser methane alarm
红外激光甲烷报警器
Simulate alarm condition to test audible and/or visible alarm.
模拟警报条件以测试声光警报。
An Algorithm for Laser Spot Precise Locating in Omni-Directional Laser Warning System
全向激光告警系统中激光光斑精确定位方法
Optical Fiber Grating Temperature Sensing Tunnel Fire Alarm System
光纤光栅隧道感温火灾报警系统设计
Application of Single Chip Processor in Laser Detecting and Prealarming System
单片机在激光探测予警装置中的应用
Researching on Several Critical Technologies of Laser Warning System;
激光告警系统中几个关键技术的研究
Research on Laser Warning Multi-Channel Signal Synchronous Control System
激光告警多路信号同步控制系统研究
Design of Detecting Receive Front-end for Digital Laser Warning System
数字激光告警系统探测接收前端设计
By folding it up to make it a flashing alarm flashlight.
折叠使用，即是一台闪光报警求助电筒。
" Acoustic, optical alarm signals and identifying indications in ships"
GB9193-1988船舶声光报警信号和识别标志
He switched on the flashing light and set off the siren.
他交换了在闪光灯和引起了警报器。
The lights of the city were out when the air-raid alarm sounded
空袭警报响时，城市的灯光就熄灭了。
Around one in the morning the sirens went off.
约摸在清晨一时光景，警报拉响了。
Optical Fiber Fence Alarm System Based on Sagnac Loop;
基于Sagnac环的光纤围栏报警系统研究
Design and Realization of the Automatic Photoelectric Target-scoring System
激光光幕自动报靶系统的设计与实现
Transmissivity for Narrowband Filter in Omni-directional Laser Warning System
全向激光告警系统中窄带滤光片的透射率分析
Study on the Alarm System of Approaching Train Based on Detection of the Wheel/rail Driving Sound;
基于轮轨激励声检测的列车接近报警系统研究