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公开(公告)号：US6078269A
公开(公告)日：2000-06-20
申请号：US967760
申请日：1997-11-10
申请人： Scott Markwell , David L. Hanning , Alan Fox , Bill Evans , Jack Ellis , Richard Goldblatt , Bob Matson
发明人： Scott Markwell , David L. Hanning , Alan Fox , Bill Evans , Jack Ellis , Richard Goldblatt , Bob Matson
CPC分类号： G08B25/009 , G08B17/11 , G08B19/005 , G08B25/001 , G08B25/003 , G08B25/10
摘要： A wireless, battery-operated detection system of a plurality of RF-interconnected detectors is operable over a CSMA-type network and intended to detect the occurrence of a local phenomena and transmit at least one signal to at least one other detector to remotely sound an alarm. Each detector includes a sensor for sensing local phenomena, a transmitter for transmitting RF messages indicative of the phenomena, a receiver for receiving the RF messages, an alarm circuit for sounding an audible alarm indicative of the phenomena and a controller operable to control the mode of operation of each detector, wherein each controller is operable to control all the detectors in the system in response to a stimulus and to control multiple and conflicting signals transmitted among the detectors. The controller includes a prioritization circuit for determining the relative priority of the received RF signals and stimuli indicative of a particular condition to enable the appropriate mode of operation. The controller also includes a timer circuit responsive to the operating mode for enabling the transmitter to transmit RF messages immediately after the receiver is sensed and no longer detects incoming message activity, and where the receiver is sensed at randomized time intervals to reduce the probability of multiple simultaneous transmissions.
摘要翻译： 多个RF互连检测器的无线电池操作的检测系统可在CSMA型网络上操作，并且旨在检测局部现象的发生，并将至少一个信号发送到至少一个其它检测器以远程地发出声音 报警。 每个检测器包括用于感测局部现象的传感器，用于发送表示现象的RF消息的发射机，用于接收RF消息的接收机，用于发出表示现象的可听报警的报警电路，以及控制器， 每个检测器的操作，其中每个控制器可操作以响应于刺激来控制系统中的所有检测器，并且控制在检测器之间传输的多个和冲突的信号。 控制器包括优先化电路，用于确定所接收的RF信号的相对优先级和指示特定条件的刺激以使能适当的操作模式。 该控制器还包括响应于操作模式的定时器电路，使得发送器能够在接收器被感测之后立即发送RF消息，并且不再检测到进入的消息活动，并且其中以随机时间间隔感测接收机以减少多个 同时传输。
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公开(公告)号：US06520003B1
公开(公告)日：2003-02-18
申请号：US09690483
申请日：2000-10-17
申请人： Alan Fox
发明人： Alan Fox
IPC分类号： G01M308
CPC分类号： G01M3/2807 , Y10T137/0324
摘要： A leakage detection device is provided for a fluid supply system. The detection device includes control means which can be selectively operated to close a valve and hence prevent further supply. The device includes at least one sensor which senses the flow of fluid through the supply system. Thus the device allows detection of fluid leakage and flow rates and can prevent or limit damage caused by fluid leakage.
摘要翻译： 为流体供应系统提供泄漏检测装置。 检测装置包括控制装置，其可以选择性地操作以关闭阀，从而防止进一步的供给。 该装置包括至少一个感测通过供应系统的流体流动的传感器。 因此，该装置允许检测流体泄漏和流速，并且可以防止或限制由流体泄漏引起的损坏。
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