高速相机声学触发装置设计  

Design of the acoustic trigger device for a high-speed camera

作　　者：张荣文[1] 

机构地区：[1]91550部队93分队

出　　处：《应用科技》2015年第3期26-29,共4页Applied Science and Technology

摘　　要：针对无人值守高速摄像的实际需求,设计了一种用于高速相机的声学触发装置。该装置利用声压传感器获取待观测目标发出的声波信号,通过单片机对输入信号进行实时分析。当单片机判定有目标出现时,会向高速相机的相应控制端口发送特定的触发信号,从而启动相机开始拍摄。触发装置由声压传感器、信号调理电路、单片机、脉冲输出电路和电源电路组成,具有体积小、功耗低、稳定性好的特点。The design of an acoustic trigger device is proposed for a high-speed camera in this paper. The device u-ses sound pressure sensor to observe the acoustic signal from the targets and complete real-time analysis of the input signal by the microcontroller. When the microcontroller judges a target appears, it will send a specific trigger signal to the corresponding control port of high-speed camera to make the camera work. The trigger device consists of a-coustic pressure sensors, signal conditioning circuits, microcontrollers, pulse output circuit and power supply cir-cuit, with the characteristics of small size, low power consumption, and good stability.

关 键 词：高速摄像 触发装置 声波信号 单片机 

分 类 号：TN911.7[电子电信—通信与信息系统]