Abstract: The invention relates to a method for the redundant signal processing of a safety-relevant application, in particular of a safety control unit of a motor vehicle, wherein at least two redundant signals are fed from at least one sensor (4) to an electronic circuit assembly (2) as input signals (6) for processing of the sensor information. At least one input signal (6) is converted into a different test signal (16). In the electronic circuit assembly (2), the one or more input signals (6) are fed to a first peripheral module (12) of a microcontroller (10), and the test signal (16) is fed to an additional peripheral module (18) of the microcontroller (10). The sensor information of the input signals (6) and of the test signal (16) are thus redundantly processed independently of each other in a respective peripheral module (12, 18) of the microcontroller (10).

Abstract: A control unit of a vehicle brake system has a receive circuit for tapping and processing a digital signal provided by an active speed sensor for speed measurement on a vehicle wheel. The signal includes information concerning the speed of a pole wheel, which is arranged in front of the sensor, spaced therefrom by an air gap, and which rotates along with the wheel. The signal also includes an actual air gap value digitized in stages and comprising several bits. The control unit also has a comparator circuit for comparing the actual air gap value to a reference air gap value and for determining whether the actual air gap value exceeds the reference value by more than a defined tolerance value. An information circuit of the control circuit generates early warning information when the comparator circuit determines that the actual air gap value exceeds the reference value by more than the tolerance value.

Abstract: An electrical switching circuit for operating a bus of a field bus system senses a fault current based on a first current of a first bus line and a second current of a second bus line.

Abstract: The invention relates to an electric switching circuit for operating a bus of a field bus system comprising means for sensing a fault current. Said means comprise first means for determining a first current of a first bus line, second means for determining a second current of a second bus line and means for detecting a fault based on the first current and the second current.

Abstract: The invention relates to a modular system comprising an electrical base unit (1) with a plurality of slots each for receiving a pluggable electrical unit (2), each pluggable electrical unit (2) being connected to the base unit (1) by means of a multi-pin plug-in connection comprising a plug-in contact device (23) and a mating plug-in contact device (13) and the base unit (1) being provided with signal processing means (12).

Abstract: A method of shutting down a pluggable electrical unit in a modular system comprising a base unit and at least one pluggable electrical unit connected via an interface. Each pluggable electrical unit has module electronics and a switch, which is coupled to a mechanical locking of the pluggable electrical unit in the base unit. The electronics is provided with a variable resistor, arranged in a feed line and is communicatively connected to the base unit via switching means. For removal, the pluggable electrical unit to be removed is unlocked and the switch is actuated. Then, communication operations in progress between the base unit and the pluggable electrical unit to be removed are terminated. The communication connection routed via the switching means is disconnected and the module electronics of the pluggable electrical unit to be removed are isolated from the base unit.

Abstract: A pluggable electrical unit with module electronics has a bus access unit for electrical connection of the pluggable unit to an electrical base unit. The base unit comprises a power supply, a signal processing means and signal lines for identification, control lines, address lines and data lines, which are connected in the manner of a bus to a plurality of contact devices. The bus access unit has a variable resistor and switches for isolation. The variable resistor and the switches for isolating signal lines for identification, control lines address lines and data lines in the pluggable electrical unit are linked to one another in a causal chain.

Abstract: The invention relates to a system for dissipating electrostatic charges (3) of a pluggable electrical unit (2) with an at least partially electrically conductive housing (20) when it is brought into connection with an at least partially electrically conductive enclosure (10) connected to earth potential of an electrical base unit (1) using a pair of leading contacts (131, 231). In this case, the enclosure (10) is connected to earth potential (4) of the base unit (1) via a first attenuator (111/121), to the frame potential (14) of the base unit (1) via a second attenuator (112/122) and to a first contact device (131). The frame potential (14) of the base unit (1) is connected to a second contact device (132). The housing (20) of the pluggable electrical unit (2) is connected to the frame potential (24) of the pluggable electrical unit (2) via a third attenuator (211/221) and to a first mating contact device (231) via a fourth attenuator (212).

Abstract: A method of initializing a pluggable electrical unit in a modular system that has a base unit and at least one pluggable electrical unit connected via an interface. Each pluggable electrical unit has module electronics and a read-only memory with clearly identifying identifiers. The interface is equipped with a variable resistor in a feed line. The connection between the base unit and the pluggable electrical unit is established initially only partially, and only to the read-only memory, after switching on the power supply to the pluggable electrical unit. After that, the pluggable electrical unit is identified and, in accordance with the identity of the pluggable electrical unit, the full connection or full isolation between the base unit and the pluggable electrical unit is established.

Abstract: The invention relates to a device for locking a pluggable electrical unit in an enclosure of an electrical base unit, the pluggable electrical unit having at least one arresting element, which engages in a mating arresting element in the enclosure of the base unit in such a way that the physical removal of the pluggable electrical unit is prevented in the locked state. For the slot-dependent detection of the actuation of locking elements on the part of the base unit, it is proposed to arrange the arresting element (21) such that, in the rest position, it is concealed by a movable covering (24) in such a way that the arresting element (21) is only accessible once the covering (24) has been removed. The covering (24) is in operative connection with an electrical switching contact (25), each position of the covering (24) deviating from the rest position triggering the switching contact (25). The covering (24) can only be brought into the rest position in the locked state of the pluggable electrical unit (2).

Abstract: The invention relates to a bus access unit for a pluggable electrical unit (2) with module electronics (22) for electrical connection to an electrical base unit (1). The base unit (1) comprises a power supply (11), a signal processing means (12) and signal lines (31) for identification, control lines (32, 33), address lines (34) and data lines (35), which are connected in the manner of a bus to a plurality of contact devices (13). The bus access unit has a variable resistor (26) and means (281, 282, 283, 284) for isolation. It is proposed to arrange the variable resistor (26) and the means (281, 282, 283, 284) for isolating signal lines (31′/31″) for identification, control lines (32′/32″, 33′/33″), address lines (34′/34″) and data lines (35′/35″) in the pluggable electrical unit (2) and link them to one another in a causal chain.

Abstract: The invention relates to a method and an arrangement for the identification of the logical composition of a modular system comprising an electrical base unit (1) with a plurality of slots each for receiving a pluggable electrical unit (2), each pluggable electrical unit (2) being electrically connected to the base unit (1) by means of a multi-pin plug-in connection comprising a plug-in contact device (23) and a mating plug-in contact device (13) and the base unit (1) being provided with signal processing means (12). Each pluggable electrical unit (2) is provided with an addressable serial read-only memory (21) for receiving identifiers clearly identifying this unit. The read-only memory (21) is connected via a serial bus (3) to the signal processing means (12) of the base unit (1). The serial bus (3) is physically formed by two bus lines (31,32) with a synchronized alternation of successive signal levels.

Abstract: The invention relates to a method of shutting down a pluggable electrical unit (2) in a modular system comprising a base unit (1) and at least one pluggable electrical unit (2) connected via an interface (3). Each pluggable electrical unit (2) has module electronics (22) and a switch (25), which is coupled to a mechanical locking of the pluggable electrical unit (2) in the base unit (1). The interface (22) is provided with a variable resistor (31), arranged in a feed line. The module electronics (22) are communicatively connected to the base unit (1) via switching means (34). For removal, the pluggable electrical unit (2) to be removed is unlocked. During the unlocking of the pluggable electrical unit (2) to be removed, the switch (25) is actuated. Then, communication operations in progress between the base unit (1) and the pluggable electrical unit (2) to be removed are terminated.

Abstract: The invention relates to a method of initializing a pluggable electrical unit (2) in a modular system comprising a base unit (1) and at least one pluggable electrical unit (2) connected via an interface (3). Each pluggable electrical unit (2) has module electronics (22) and a read-only memory (21) with clearly identifying identifiers. The interface (3) is equipped with a variable resistor (31) arranged in a feed line. The readonly memory (21) is disconnected from the base unit (1) via first switching means (33) and the module electronics (22) are disconnected from the base unit (1) via second switching means (34). It is proposed to establish the connection between the base unit (1) and the pluggable electrical unit (2) initially only partially, and only to the read-only memory (21), after switching on the power supply to the pluggable electrical unit (2).

Abstract: The invention relates to a modular system comprising an electrical base unit (1) with a plurality of slots each for receiving a pluggable electrical unit (2), each pluggable electrical unit (2) being connected to the base unit (1) by means of a multi-pin plug-in connection comprising a plug-in contact device (23) and a mating plug-in contact device (13) and the base unit (1) being provided with signal processing means (12).

Abstract: The invention relates to a device for locking a pluggable electrical unit in an enclosure of an electrical base unit, the pluggable electrical unit having at least one arresting element, which engages in a mating arresting element in the enclosure of the base unit in such a way that the physical removal of the pluggable electrical unit is prevented in the locked state. For the slot-dependent detection of the actuation of locking elements on the part of the base unit, it is proposed to arrange the arresting element (21) such that, in the rest position, it is concealed by a movable covering (24) in such a way that the arresting element (21) is only accessible once the covering (24) has been removed. The covering (24) is in operative connection with an electrical switching contact (25), each position of the covering (24) deviating from the rest position triggering the switching contact (25). The covering (24) can only be brought into the rest position in the locked state of the pluggable electrical unit (2).

Abstract: The invention relates to a system for dissipating electrostatic charges (3) of a pluggable electrical unit (2) with an at least partially electrically conductive housing (20) when it is brought into connection with an at least partially electrically conductive enclosure (10) connected to earth potential of an electrical base unit (1) using a pair of leading contacts (131, 231). In this case, the enclosure (10) is connected to earth potential (4) of the base unit (1) via a first attenuator (111/121), to the frame potential (14) of the base unit (1) via a second attenuator (112/122) and to a first contact device (131). The frame potential (14) of the base unit (1) is connected to a second contact device (132). The housing (20) of the pluggable electrical unit (2) is connected to the frame potential (24) of the pluggable electrical unit (2) via a third attenuator (211/221) and to a first mating contact device (231) via a fourth attenuator (212).