Patent ID: 6947863
Filing Date: 2005-09-20
Classification: G01R,H04B

Abstract:
1. A circuit arrangement to monitor physical parameters, comprising: a first monitoring module to monitor at least one physical parameter with means to feed a signal to an evaluation circuit when the monitored physical parameter deviates from a prescribed setpoint range using a first output signal carrying means and with a first input signal carrying means to input a first test signal, wherein the first test signal can produce a change in state of the first monitoring module the same as is produced by a deviation of the monitored physical parameter from its setpoint range; at least one other monitoring module to monitor the physical parameter, with means to feed a signal to the evaluation circuit when the monitored physical parameter deviates from its prescribed setpoint range, using other output signal carrying means and with other input signal carrying means to input another test signal, wherein the other test signal can produce a change in state of the other monitoring module the same as is produced by a deviation of the monitored physical parameter from its setpoint range; linking means associated with the evaluation circuit to link the signals fed through the first output signal carrying means and the other output signal carrying means to a resultant output signal; a first register means associated with the evaluation circuit to separately impress the first test signal onto the first input signal carrying means and the second test signal onto the other input signal carrying means, wherein the first register means has a means to receive control information from a control means; and a second register means associated with the evaluation circuit that is connected to the first output signal carrying means and the other output signal carrying means and that includes a means to transfer status information to the control means, wherein