发明名称 |
Interface circuit for distributed fire alarm in loop configuration |
摘要 |
An interface circuit of a sub-system of a distributed fire detection system having a plurality of sub-systems, wherein the plurality of sub-systems are in communication with each other in a loop configuration to allow data signals to be routed between said sub-systems. The interface circuit connects the internal components of a sub-system to the external bus line connecting all components via at least three input/output ports. It comprises hardware logic components, namely switches and switch controllers listening for incoming data and opening or closing said switches to cause disconnection and connection between said input/output ports accordingly, thereby allowing the routing of data signals to one or more of the other input/output ports. The simpler configurations replaces a routing processor. |
申请公布号 |
US9514635(B2) |
申请公布日期 |
2016.12.06 |
申请号 |
US201314432703 |
申请日期 |
2013.10.08 |
申请人 |
Thorn Security Limited |
发明人 |
Brenner Andreas;Kulkarni Prasad;Baroch Josef;Vetricek Vladimir |
分类号 |
G08B25/00;G08B29/18;G08B25/04;H04L12/42;G08B25/14 |
主分类号 |
G08B25/00 |
代理机构 |
HoustonHogle LLP |
代理人 |
HoustonHogle LLP |
主权项 |
1. An interface circuit of a sub-system of a distributed fire detection system having a plurality of sub-systems, wherein the plurality of sub-systems are in communication with each other in a loop configuration to allow data signals to be routed between said sub-systems, the interface circuit comprising:
at least three input/output ports through which data signals can be received or transmitted, each of said ports being connectable to at least two of the other input/output ports to establish a connection therebetween; a plurality of switches, each switch arranged between a pair of the input/output ports to establish a connection, the switch having a closed position and an open position; and a plurality of sensors, each being coupled to a respective one of said input/output ports, and upon detection of said data signals the sensor is operable to generate a control signal to open or close at least one of said switches to cause disconnection and connection between said input/output ports, thereby allowing the data signals to be routed to one or more of the other input/output ports. |
地址 |
Sunbury-on-Thames, Middlesex GB |