A method for checking a sensor signal suitable for actuating a passenger protection arrangement of a vehicle. The method includes a step of carrying out a comparison between the sensor signal and at least one reference signal, repeatedly within a predetermined time interval, in order to obtain a plurality of comparison results, and a step of evaluating the sensor signal based on the plurality of comparison results, in order to detect a fault in the sensor signal.

An energy supply unit for supplying a consumer, includes an energy store to supply electric when the consumer is decoupled from an energy supply network. The energy supply unit includes an energy supply controller having an input coupled to the energy store, via a diode, for receiving electric energy and an output for delivering electric energy, and a monitoring unit for outputting a monitoring signal, configured to set the monitoring signal to an active state when an output voltage between the output and a reference potential is lower/greater than a predefined activation threshold value, the monitoring unit configured, when an excessively low input voltage is identified between the input and reference potential of the controller, especially paired with an excessively low output voltage, the monitoring signal is switched to the inactive state when the input voltage is above a reset threshold and the output voltage is within the monitoring band.

A method for diagnosing aircraft airbag initiators in air bag systems includes: providing a diagnostic circuit per aircraft seat, the diagnostic circuit being in a normally off condition and enabled by a user activation; providing a power supply independent of aircraft power; providing a momentary switch; providing a visual indicator; receiving a signal indicating user activation of the momentary switch; and responsive to receiving the signal: completing a circuit, regulating a current into the diagnostic circuit to prevent a squib from firing during diagnostic evaluation; detecting a voltage; and providing feedback to the user.

An airbag control device, wherein the airbag control device generates at least one actuation signal for an actuation time as a function of at least one sensor signal, wherein the airbag control device can maintain the at least one actuation signal for a holding time, wherein the airbag control device has at least one non-volatile memory in which the generation of the at least one actuation signal can be stored, wherein the airbag control device, when the at least one actuation signal is generated, stores a status signal in the at least one non-volatile memory or in a further non-volatile memory, wherein the status signal is deleted again if the at least one actuation signal was generated for longer than a storage time. Also disclosed is a voltage network in a motor vehicle and to a method for actuating a voltage network.

A method for maintaining an actuator for an airbag control device. The method has a step of impressing an electric current flow through the actuator using an electric voltage having a voltage value. In addition, the method has a step of ascertaining an electric measuring current through the actuator. Here, the electric measuring current through the actuator occurs on account of the impressed electric current flow through the actuator. In addition, the method has a step of executing a comparison of the electric measuring current through the actuator to a threshold value. Moreover, the method has a step of adjusting the voltage value of the electric voltage for impressing the electric current flow through the actuator as a function of the comparison.

A sensor system having a current interface includes a supply and current interface, an electronic control unit and an enhanced initialization sensor. The supply and current interface is configured to receive a supply voltage. The electronic control unit is coupled to the supply and current interface. The enhanced initialization sensor is coupled to the supply and current interface. The enhanced initialization sensor is configured to initialize the supply and current interface at a suitable current level to mitigate erroneous information. measurement system.

The present invention relates to a device, which is configured to control a circuit arrangement, connected to an energy storage device, such that a predefined measurement current is caused to flow through the circuit arrangement and the energy storage device. The device may detect voltage values of the energy storage device at different times, while the measurement current is flowing, such that a healthy message of the energy storage device can be generated based on the detected voltages. The present invention also relates to a corresponding system and method.

The present invention discloses embodiments of an apparatus, system and related method for diagnosing initiators in air bag systems. An embodiment of the system comprises a diagnostic circuit electrically connected between acceleration switches and one or more squib, that is user-activated via a momentary switch, and with user-feedback, wherein a user can diagnose the health of the one or more squib with no power drain while inactive. An embodiment of a method related to the system comprises activating a momentary switch, completing a circuit whereby a diagnostic circuit may function, indicating to the user that the diagnostic circuit is functioning, regulating the current into the diagnostic circuit so that the squib does not fire, boosting the signal to a window comparator, detecting the desired voltage by the window comparator, giving feedback to the user that the voltage is good, too high, or too low. An apparatus embodiment of the present invention may comprise an electronics control module for sensing a crash event and initiating an inflation sequence for one or more airbags with an integrated system for diagnosing one or more initiators. The apparatus may include a housing enclosing one or more circuit boards, to which may be electrically connected one or more wire harnesses which themselves are electrically connected to one or more squibs.

A circuit arrangement includes a controller and an integrated driver arrangement coupled to the controller. The integrated driver circuit includes a driver unit having at least one operation parameter, and a diagnostic unit coupled to the driver unit. The diagnostic unit is adapted to retrieve the at least one operation parameter from the driver unit, and is coupled to the controller.

An electronic module assembly (EMA) for use in controlling one or more personal restraint systems. A programmed processor within the EMA is configured to determine when a personal restraint system associated with each seat in a vehicle should be deployed. In addition, the programmed processor is configured to perform a diagnostic self-test to determine if the EMA and the personal restraint systems are operational. In one embodiment, results of the diagnostic self-test routine are displayed on a display included on the electronic module assembly. In an alternative embodiment, the results of the diagnostic self-test routine are transmitted via a wireless transceiver to a remote device. The remote device can include a wireless interrogator or can be a remote computer system such as a cabin management computer system.