Back to results
US 2009/0212937 A1Published application
Active line termination module
AssigneeMinimax GmbH & Co. KG
InventorsArne Stamer, Jan Heick
Life of this patent
Estimating the term…
Abstract
An active line termination module for monitoring a line impedance of electrical systems, particularly for use at the ends of fire alarm lines, consists of a constant current sink with lighted display, a voltage regulator, and an intelligent electronic component disposed between the lines to be monitored, so that the intelligent electronic component is connected with the constant current sink by a line.
Claims9
An active line termination module for monitoring impedance of a line in an electrical system, comprising:
- a constant current sink with lighted display;
- a voltage regulator;
- and
- an intelligent electronic component connected with the constant current sink by a line;
- wherein the constant current sink, voltage regulator and intelligent electronic component are adapted to be connected to the line to be monitored;
- wherein the active line module is adapted to lower a line current at an end of the line to be monitored;
- wherein the constant current sink in a rest case is turned on by the intelligent electronic component and forms a rest current for the line to be monitored;
- wherein the voltage regulator is adapted to keep a voltage of the line to be monitored constant and the intelligent electronic component is adapted to cyclically turn off the constant current sink for a short time, or increase the current, and;
- wherein the module measures the voltage on the line to be monitored before and after the constant current sink is turned off or the current is increased, and in the case of an overly high impedance, shuts off the constant current sink or issues a signal to a monitoring device.
6 more elements
Dependencies are inferred from the claim text.