公开(公告)号：US06091338A

公开(公告)日：2000-07-18

申请号：US246356

申请日：1999-02-08

Applicant: Gabi Natra

Inventor： Gabi Natra

IPC: H04M1/74 ,  H04M3/18 ,  G08B21/00 ,  H04M1/24

CPC classification number: H04M1/745 ,  H04M3/18 ,  H04M2201/80

Abstract: A safety protection system and a related operational method for the electrical protection of users of XDSL communication circuitry. The system is based on continuous monitoring of the current parameters on both the exchange and the remote subscriber ends of the XDSL communication system. The safety protection system samples, digitizes and compares the currents at both XDSL communication system ends. The measured currents are compared to specific limiting current and currents difference levels, based on the relevant safety requirements. Whenever required, based on the measured currents status, the safety system shuts down the XDSL communication system, or limits its maximum current. In another embodiment of the invention the safety system is based on continuous monitoring of the voltages related to ground of the two system communication wires, on one or both of the exchange and the remote subscriber ends of the XDSL communication system. The safety system compares the measured voltages and limits the XDSL system current to a safety protected level, if one of the wire voltages is different by at least a predefined voltage increment related to the second wire voltage.

Abstract translation: XDSL通信电路用户电气保护的安全保护系统及相关操作方法。 该系统基于对XDSL通信系统的交换机和远程用户端上的当前参数的连续监视。 安全保护系统采样，数字化和比较两个XDSL通信系统端的电流。 根据相关安全要求，将测量的电流与特定的限制电流和电流差值进行比较。 每当需要时，根据测量的电流状态，安全系统关闭XDSL通信系统，或限制其最大电流。 在本发明的另一个实施例中，安全系统基于在XDSL通信系统的交换机和远程用户端的一个或两个上连续监视与两个系统通信线路的接地相关的电压。 安全系统比较测量的电压，并将XDSL系统电流限制到安全保护级别，如果其中一条线电压至少与第二线电压相关的预定电压增量不同。