公开(公告)号：EP1704680A2

公开(公告)日：2006-09-27

申请号：EP04821163.5

申请日：2004-12-21

申请人： Denoon-Stevens, David ,  De Villiers, Neels Paul

发明人： Denoon-Stevens, David ,  De Villiers, Neels Paul

IPC分类号： H04L12/437

CPC分类号： H04L12/437 ,  H04L12/42

摘要： A network loop monitor (10) is disclosed which comprises an RS485 port (16) for connection to a host which receives and transmits data. The port (16) comprises termination jumpers (14), a transmitter/receiver (34) and an isolator (36). The monitor (10) includes two further RS485 ports (18, 20) each of which has a termination (26, 28), a transmitter/receiver (42, 44) and an isolator (38, 40). A relay (22) controls contacts (24) in the line pair (12). Router logic (32) controlled by a microprocessor (30) determines the status of the loop monitor.

摘要翻译： 公开了一种网络环路监视器（10），其包括用于连接到接收和发送数据的主机的RS485端口（16）。 端口（16）包括终端跳线（14），发射机/接收机（34）和隔离器（36）。 监视器（10）包括两个另外的RS485端口（18,20），每个RS485端口具有终端（26,28），发送器/接收器（42,44）和隔离器（38,40）。 继电器（22）控制线对（12）中的触点（24）。 由微处理器（30）控制的路由器逻辑（32）确定环路监视器的状态。

公开(公告)号：EP2338243A2

公开(公告)日：2011-06-29

申请号：EP09814172.4

申请日：2009-09-18

申请人： Denoon-Stevens, David

发明人： Denoon-Stevens, David

IPC分类号： H04J3/14 ,  H04L12/24 ,  H04B10/08

CPC分类号： G06F11/2007 ,  H04L1/22 ,  H04L45/12

摘要： A communications network is disclosed comprising a dynamic-impedance monitor- dynamic analysis network node 9 having multiple data ports (11, 18, 27), through which data is transmitted through the network. The impedances of external wire pairs 10.1, 10.2, 10.3 are monitored and respective termination impedances dynamically varied to minimize detected distortion. Signal flatness and reflected signal decay at the end of a data packet are used by a microprocessor as indicative of impedance matching or mismatching. The network further comprises "best route logic" for routing data through the node (9) to other data ports. If the network includes sufficient redundant links these are connected by the "best route logic" to form a second network over which status data can be transmitted.

公开(公告)号：EP2593930A1

公开(公告)日：2013-05-22

申请号：EP11806382.5

申请日：2011-07-12

申请人： Runciman, Dunstan Walter ,  Denoon-Stevens, David

发明人： Runciman, Dunstan Walter ,  Denoon-Stevens, David

IPC分类号： G08B13/00 ,  G08B23/00

CPC分类号： G08B13/24 ,  G08B13/1436 ,  G08B13/1481 ,  G08B25/008 ,  G08B25/016

摘要： A portable alarm device which includes a casing containing one or more of the following; means for detecting that the device has been moved, means for detecting a person in the vicinity of the device and means for detecting changes in ambient light level. The device further includes a scrolling system which makes each of said means available in turn for receiving commands that are inputted manually. The device has a code accepting unit which receives an inputted code to bring the device to a condition in which a selected one of said means can be activated. The device is deactivated by insertion of said code for a second time. By providing the device with a sound generator and a sound receiver it is possible to interconnect the devices so that activating or deactivating one is used to activate or deactivate a series. Likewise the establishment of an alarm condition at one device can be used to trigger alarm conditions at other devices.

摘要翻译： 一种便携式报警装置，其包括容纳以下一个或多个的壳体​​; 用于检测设备已被移动的装置，用于检测设备附近的人的装置和用于检测环境光水平的变化的装置。 该设备还包括滚动系统，其使得每个所述装置依次可用于接收手动输入的命令。 该设备具有代码接收单元，其接收输入的代码以使设备处于可以激活所选择的一个所述装置的状态。 通过第二次插入所述代码来禁用该设备。 通过向设备提供声音发生器和声音接收器，可以互连这些设备，使得激活或去激活设备以激活或停用一系列。 同样，在一个设备上建立报警条件可用于触发其他设备的报警条件。