Device for automatic monitoring of the state of charge network independent power supplies have haen

摘要

1. Device for automatically monitoring the load state of the mains-independent current supply of the stationary response apparatus of a system of the position finding of traffic devices, which response apparatus is in contact with and mutually exchanges data telegrams with an interrogation apparatus which is installed in the traffic device, characterised in that the current supply unit consisting of primary batteries or accumulators with charging from solar cells is assigned a monitoring sensor (Ts, Z, R1, R2, R3) which has a response threshold (UB alarm) which serves to emit an alarm signal and lies, by a defined adjustable value, above the minimum voltage (UB min) which is required for undisturbed operation, and that the result of the measurement of the voltage (UB ) which is carried out in each interrogation process of the interrogation apparatus is fed to a telegram register (TR) as a monitoring signal and added to the telegram, which contains the link data and has been transmitted to the interrogation apparatus by the response apparatus, in a coded form.