초록 ▼

An anti-block control system has four identically designed control channels. Safety circuits (8, 8′) are also provided for monitoring the system, as are devices for testing the operability of the system. In this test, performed while the vehicle is stopped or when it is started, a test signal is fed

An anti-block control system has four identically designed control channels. Safety circuits (8, 8′) are also provided for monitoring the system, as are devices for testing the operability of the system. In this test, performed while the vehicle is stopped or when it is started, a test signal is fed into the channels and the effects of this signal are compared, in pairs, at locations of the controller corresponding to one another. A signal train is formed when the comparison is made. In accordance with the invention, two safety circuits (8, 8′) are provided, each associated with a pair of channels, and the signals from all the channels are supplied, in pairs, to the safety circuits. The safety circuits include timing elements. During a test cycle, the signal trains in the two channel pairs generated by using the test signal are compared with one another by use of two comparator circuits (23, 23′), and in the case of non-agreement, a warning or switching signal (18, 18′, 31) is generated.

대표청구항 ▼

Anti-wheel block control system for separately monitoring the wheels of a vehicle having four identical control channels, each control channel including a sensor (S1, S2, S3, S4) sensing wheel behavior, an evaluation circuit (6, 6′) evaluating the output signals from the associated sensor, and a bra

Anti-wheel block control system for separately monitoring the wheels of a vehicle having four identical control channels, each control channel including a sensor (S1, S2, S3, S4) sensing wheel behavior, an evaluation circuit (6, 6′) evaluating the output signals from the associated sensor, and a brake control unit (16, 14; 17, 15; 16′, 14′; 17′, 15′) coupled to and being controlled by the respective evaluation circuit, one channel, each, being associated with a wheel brake of the vehicle; a safety circuit means for monitoring the anti-wheel block system and for testing the operability of the anti-block control system at timed intervals in a test cycle and providing identical test signals, said identical test signals being coupled from the safety circuit means into all the channels; comparator means (C, C′) within the safety circuit means connected to and comparing－by pairs－signals occurring at corresponding locations within said channels based on said test signals, for correspondence with respect to one another, the comparator means generating a malfunction output control signal if the compared signals deviate from one another, wherein, in accordance with the invention, the safety circuit means comprises separate safety circuits (8, 8′) for each pair of channels including timing means for monitoring the temporal response time of the respective channels; and means for testing the operability of both safety circuit means and connected to both pairs of channels including at least one further comparator (23, 23′), being connected to the safety circuits (8, 8′) for comparing, during the test cycle, agreement of the test signals separately generated for each channel pair, said at least one further comparator (23, 23′) generating a malfunction output signal if the test signals differ from one another.