Teldix Gmbh

Hermann Klotz

Heinz Leiber

Jurgen Gerstenmeier

A pulse generator composed of a stator, a part which is movable with respect to the stator, a coil of wire, at least one Wiegand wire, and at least one magnet which causes the Wiegand wire to generate pulses in the coil based on the Wiegand effect, upon movement of the movable part. The magnetic field produced by the magnet is of such an asymmetrical form with respect to the Wiegand wire that the pulses show a positive or negative polarity depending on the sense of movement of the movable part.

Pulse generator

An antilocking control system for the wheel brakes of a vehicle, which system includes two identically designed control units for various wheels of the vehicle and with each control unit comprising at least one wheel speed sensor, an evaluation circuit for evaluating the output signals from the sensors and for producing control signals and a brake pressure control unit responsive to the control signals from the evaluation circuit, as well as a device for testing the operability of the antilocking control system at desired time intervals. The testing device, upon receipt of a start instruction, simultaneously feeds at least one identical test signal to each of the two control units, and then compares the effect of the test signal on the two control units by comparing output signals from the two control units at given corresponding points in the two control units for at least approximate coincidence with respect to the timely occurrence and/or the magnitude of the signals and generates a control signal, e.g., to switch-off the antilock control system and/or actuate a warning device, if there is a deviation between the two signals being compared which is greater than a given value.

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Schwetzingen, Germany

Hermann Klotz