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公开(公告)号：US5504717A
公开(公告)日：1996-04-02
申请号：US250743
申请日：1994-05-27
CPC分类号： G01S3/801 , G01S3/808 , G01S3/8086 , G01V1/001 , G08B13/1672 , Y10S367/906
摘要： A security system for detecting and reporting gunshot events for control of urban environment security which includes a communication link coupled to a plurality of pole units arranged in a dense grid. Each of the plurality of pole units includes a microphone, a data acquisition unit coupled to said microphone, a signal processor for discriminating gunshot events, and a communication interface apparatus coupled at an input to the signal processor. The communication interface also has an output coupled to the communication link, where the communication interface transmits and receives data on the communication link. A central processor is coupled to the communication link so as to receive data from and transmit data to the plurality of pole units. The central processor and the plurality of pole units operate so as to detect and locate gunshot events sensed by one or more of the plurality of pole units.
摘要翻译： 一种用于检测和报告用于控制城市环境安全的枪声事件的安全系统，其包括耦合到布置在密集网格中的多个极单元的通信链路。 多个极单元中的每一个包括麦克风，耦合到所述麦克风的数据获取单元，用于识别枪声事件的信号处理器，以及耦合到信号处理器的输入处的通信接口装置。 通信接口还具有耦合到通信链路的输出，其中通信接口在通信链路上发送和接收数据。 中央处理器耦合到通信链路，以便从多个极单元接收数据并向其发送数据。 中央处理器和多个极单元操作以便检测和定位由多个极单元中的一个或多个检测到的枪声事件。
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公开(公告)号：US5703835A
公开(公告)日：1997-12-30
申请号：US627323
申请日：1996-04-01
CPC分类号： G01S3/801 , G01S3/808 , G01S3/8086 , G01V1/001 , G08B13/1672 , Y10S367/906
摘要： A security system for detecting a gunshot event. A communication link, and a number of pole units are arranged in a dense grid. Each one of the pole units includes a microphone and a signal conditioning and thresholding unit coupled to the microphone. The signal conditioning and thresholding unit outputs a detection signal in response to an event when an output signal from the microphone exceeds a peak background average. A data acquisition and signal processing unit is coupled to the signal conditioning and thresholding unit for discriminating gunshot events. The data acquisition and signal processing unit remains in a powered down stand-by mode so as to conserve energy until a detection signal is received. The data acquisition and signal processing unit includes apparatus for identifying a gunshot event by measuring an initial pulse time duration and subsequent pulse pattern features, and a communication interface coupled at an input to the data acquisition and signal processing unit. A central processor is coupled to the communication link so as to receive data from the pole units where the central processor and the pole units operate so as to detect and locate gunshot events sensed by one or more of the pole units.
摘要翻译： 用于检测枪支事件的安全系统。 通信链路和多个极点单元布置在密集网格中。 每个极单元包括麦克风和耦合到麦克风的信号调理和阈值单元。 信号调节和阈值单元响应于来自麦克风的输出信号超过峰值背景平均值的事件输出检测信号。 数据采集和信号处理单元耦合到信号调节和阈值单元以识别枪声事件。 数据采集和信号处理单元保持断电待机模式，以便节省能量，直到接收到检测信号。 数据采集和信号处理单元包括通过测量初始脉冲持续时间和后续脉冲图形特征来识别枪声事件的装置，以及在数据采集和信号处理单元的输入处耦合的通信接口。 中央处理器耦合到通信链路，以便从中央处理器和极单元操作的极点单元接收数据，以便检测和定位由一个或多个极单元感测到的枪声事件。
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