摘要:
The invention relates to a method for operating a device for wiping a window (10), comprising at least two wipers (11, 12), which are each driven by a respective electric motor (14, 15), and with each of which a respective position sensor (16, 17) is associated, which position sensors generate position sensor signals in dependence on the position of the wipers, and comprising a signal-processing assembly (20), which operates the electric motors (14, 15) in dependence on the position sensor signals and the specified target positions and comprises a storage means (22), in which the target positions are stored, wherein the blocking position that a blocked wiper (12) assumes during a wiping cycle is stored in a storage means (23) of the signal-processing assembly (20) and is used to control an unblocked wiper (11) in a subsequent wiping cycle.
摘要:
The invention relates to a windscreen wiper drive aggregate, comprising a drive motor (1) and a transmission (2, 3) for transmitting a rotational movement of the motor (1) to the shaft of a windscreen wiper, at least one sensor (6) for detecting the position of the shaft, a control circuit (4) which receives a detection signal of the sensor (6) and one or more inputs (7) for receiving operating signals defining a desired operating mode of the windscreen wiper. The control circuit (4) is configured for controlling a sequence of movements of the shaft in dependence on the received operating signal and is combined with the drive motor (1) and the at least one sensor (6) to form a homogenous module.
摘要:
Proposed is a method of increasing the power of a high-pressure gas-discharge lamp (1) working with a control unit which controls a power-supply circuit in accordance with a characteristic curve (21) to provide essentially constant power. To change the power, the method calls for controlled displacement of the voltage/current characteristic curve, in particular by the manipulation of one or more of the characteristic-curve input parameters. The device for carrying out the method is designed in such a way that the control circuit includes a microcontroller (2) and that displacement of the characteristic curve is carried out under software control, in particular by the addition or subtraction of suitable step values (ΔU) or continuously variable parameters to the control values (U1, U2) fed to the control element (3). In another embodiment, the method uses an ASIC to displace the characteristic curve under hardware control.
摘要:
The invention concerns a fixed-cycle power-supply circuit with an at least temporarily active consumer-independent load (28), in particular for supplying a consumer consisting of gas-discharge lamps. The circuit includes a d.c./d.c. converter (10) with a transformer (11). The converter is connected to a d.c. supply (13) by switching means (12) under the clock control of a control unit (14) which provides the switching means with switching signals (15) in dependence on the load status at the power-supply circuit output. The transformer of the d.c./d.c. converter is designed in such a way that two voltages (U+, U-) of differing polarity and size can be taken off at the power-supply circuit output. At least one (U-) of these voltages is regulated and intended for the supply of the consumer while it is operating. The at least temporarily active load (28) can be connected to the regulated voltage (U-).
摘要:
The invention concerns an arrangement for determining the state of a high-pressure gas discharge lamp on switching-on, wherein a control device either impresses a specific current into the lamp and measures the resultant voltage drop, or applies a specific voltage to the lamp and measures the resultant flowing lamp current and, as a function of the result, triggers the light according to the established lamp state.
摘要:
The invention concerns a thermally-protected control apparatus containing electrical components, in particular for controlling high-pressure gas-discharge lamps in motor vehicle headlights. According to the invention, electrical components which emit electrical power are accommodated in a substantially closed housing. On the basis of the control apparatus temperature detected by a temperature sensor (30), a regulating circuit (21-31) or control circuit varies the electrical power output as a function of the temperature determined such that the internal temperature of the control apparatus is stabilized. In most cases, this stabilization consists in reducing the power output in order to prevent the internal temperature of the control apparatus housing from rising above a maximum permissible temperature.
摘要:
Proposed is a method of increasing the power of a high-pressure gas-discharge lamp (1) working with a control unit which controls a power-supply circuit in accordance with a characteristic curve (21) to provide essentially constant power. To change the power, the method calls for controlled displacement of the voltage/current characteristic curve, in particular by the manipulation of one or more of the characteristic-curve input parameters. The device for carrying out the method is designed in such a way that the control circuit includes a microcontroller (2) and that displacement of the characteristic curve is carried out under software control, in particular by the addition or subtraction of suitable step values (ΔU) or continuously variable parameters to the control values (U1, U2) fed to the control element (3). In another embodiment, the method uses an ASIC to displace the characteristic curve under hardware control.
摘要:
The invention relates to an arrangement for detecting the ignition of a high-pressure gas discharge lamp, in particular for use in a vehicle headlight. Said arrangement contains a circuit for supplying the high-pressure gas discharge lamp with burning power, a control circuit and an ignition circuit. Said ignition circuit is acted upon, for ignition, by an auxiliary voltage. The control circuit is designed so that it detects ignition of the high-pressure gas discharge lamp immediately as a result of the behaviour or the status of the auxiliary voltage (UH). Said control circuit can be provided with a microcontroller (20). The auxiliary voltage supplied during ignition is connected to the microcontroller in such a manner that it detects ignition immediately. To this end, the auxiliary voltage is applied at the external interrupt entry (21) of the microcontroller by way of a voltage divider (22,23, 24) with logical potential. The falling edge which occurs during ignition as a result of the breakdown of the auxiliary voltage or the low voltage level is detected immediately by the microcontroller and interpreted as ignition.
摘要:
The invention relates to a windscreen wiper drive aggregate, comprising a drive motor (1) and a transmission (2, 3) for transmitting a rotational movement of the motor (1) to the shaft of a windscreen wiper, at least one sensor (6) for detecting the position of the shaft, a control circuit (4) which receives a detection signal of the sensor (6) and one or more inputs (7) for receiving operating signals defining a desired operating mode of the windscreen wiper. The control circuit (4) is configured for controlling a sequence of movements of the shaft in dependence on the received operating signal and is combined with the drive motor (1) and the at least one sensor (6) to form a homogenous module.
摘要:
The invention concerns a thermally-protected control apparatus containing electrical components, in particular for controlling high-pressure gas-discharge lamps in motor vehicle headlights. According to the invention, electrical components which emit electrical power are accommodated in a substantially closed housing. On the basis of the control apparatus temperature detected by a temperature sensor (30), a regulating circuit (21-31) or control circuit varies the electrical power output as a function of the temperature determined such that the internal temperature of the control apparatus is stabilized. In most cases, this stabilization consists in reducing the power output in order to prevent the internal temperature of the control apparatus housing from rising above a maximum permissible temperature.