MONITORING DEVICE FOR FUNCTIONALLY MONITORING REPORTING SYSTEM, REPORTING SYSTEM, AND METHOD FOR MONITORING
First Claim
1. A monitoring device (6,10) for monitoring the function of a reporting system (1), the reporting system (1) comprising a plurality of reporting devices (4) and/or signalling devices, supply lines (3), and a voltage source, wherein the reporting devices (4) and/or signalling devices are connected to the voltage source via the supply lines (3), and the reporting devices (4) and/or signalling devices are connected in parallel to one another and to the voltage source, characterized by a test signal device (6) which is designed to connect a reference resistor (R) into the supply lines (3) in parallel with the reporting devices (4) and/or signalling devices, and/or which is designed to connect a or the reference resistor (R) as a termination of the supply lines (3), and comprising an evaluation device (10) for detecting and evaluating the system response of the reporting system (1) to the connecting of the reference resistor (R).
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Accused Products
Abstract
Reporting systems, such as fire alarm systems, alarm systems or the like, are usually used for communications equipment in large plants, wherein automatic or manual reports are produced at decentralized locations and are forwarded to a central control system. To this end, the reporting systems comprise a plurality of reporting units connected to one another and to the central control system by way of signal lines and/or power supply lines. In a distributed embodiment, the power supply and signal lines are combined in a two-wire line, wherein the change in current flow and voltage in the two-wire line is monitored and a report is produced in the central control system when changes occur. A monitoring device (6,10) is proposed for functionally monitoring a reporting system (1), wherein the reporting system comprises a plurality of reporting units (4) or signaling units, power supply lines (3) and a voltage source, wherein the reporting units (4) or signaling units are connected to the voltage source by way of the power supply lines (3) and wherein the reporting units (4) or signaling units are connected in parallel to one another and to the voltage source, wherein a test signal unit (6) is adapted for connecting a reference resistance R in the power supply lines (3) parallel to the reporting units (4) and/or for connecting a or the reference resistance as a termination of the power supply lines (3), and with an evaluation unit (10) for detecting and evaluating the system answer of the reporting system (1) to the connecting of the reference resistance R.
10 Citations
12 Claims
- 1. A monitoring device (6,10) for monitoring the function of a reporting system (1), the reporting system (1) comprising a plurality of reporting devices (4) and/or signalling devices, supply lines (3), and a voltage source, wherein the reporting devices (4) and/or signalling devices are connected to the voltage source via the supply lines (3), and the reporting devices (4) and/or signalling devices are connected in parallel to one another and to the voltage source, characterized by a test signal device (6) which is designed to connect a reference resistor (R) into the supply lines (3) in parallel with the reporting devices (4) and/or signalling devices, and/or which is designed to connect a or the reference resistor (R) as a termination of the supply lines (3), and comprising an evaluation device (10) for detecting and evaluating the system response of the reporting system (1) to the connecting of the reference resistor (R).
Specification