Abstract: A restraint control system of a vehicle includes: a position module configured to determine positions of seats within a passenger cabin of the vehicle; a restraint control module configured to, in response to detection of a collision of the vehicle: select which ones of the restraints of the vehicle to activate based on the positions of the seats; activate the selected restraints of the vehicle; and not activate non-selected ones of the restraints.

Abstract: A system for diagnosing a squib loop in a restraint control module. The system may include a first amplifier, a capacitor, a second amplifier. The first amplifier may have a first input connected to a first side of the squib and a second input connected to a second side of the squib. The output of the first amplifier may generate an output voltage corresponding to the voltage drop across the squib. The capacitor may be connected in series with the output of the first amplifier and the output of the first amplifier may be connected to a first side of the capacitor. The second amplifier having a first input connected to a second side of the capacitor. A second input of the second amplifier may be connected to a reference voltage. The second amplifier may be configured with a feedback loop to generate a gain output.

Abstract: A duplex squib module is provided. The duplex squib module may include a first squib, a second squib, a first active blocking circuit, and a second active blocking circuit: The first active blocking circuit being in series with the first squib. The first active blocking circuit having a transistor in series with a first diode to block current in a first direction. The second active blocking circuit being in series with the second squib. The second active blocking circuit having a transistor in series with a first diode to block current in a second direction opposite of the first direction.

Abstract: An active power blocking circuit in series with a squib. The active power blocking circuit may include a logic circuit, a first switch, a second switch, and an amplifier. The first switch may have a first side connected to a positive connection and a second side connected to a negative connection. The second switch may have a first side connected to the positive connection and a second side connected to the negative connection through a diode. The amplifier may be connected the second side of the second switch and the output of the amplifier may be connected to the logic circuit.

Abstract: An active power blocking circuit in series with a squib. The active power blocking circuit may include a logic circuit, a first switch, a second switch, and an amplifier. The first switch may have a first side connected to a positive connection and a second side connected to a negative connection. The second switch may have a first side connected to the positive connection and a second side connected to the negative connection through a diode. The amplifier may be connected the second side of the second switch and the output of the amplifier may be connected to the logic circuit.

Abstract: A system for diagnosing a squib loop in a restraint control module. The system may include a first amplifier, a capacitor, a second amplifier. The first amplifier may have a first input connected to a first side of the squib and a second input connected to a second side of the squib. The output of the first amplifier may generate an output voltage corresponding to the voltage drop across the squib. The capacitor may be connected in series with the output of the first amplifier and the output of the first amplifier may be connected to a first side of the capacitor. The second amplifier having a first input connected to a second side of the capacitor. A second input of the second amplifier may be connected to a reference voltage. The second amplifier may be configured with a feedback loop to generate a gain output.

Abstract: A duplex squib module is provided. The duplex squib module may include a first squib, a second squib, a first active blocking circuit, and a second active blocking circuit: The first active blocking circuit being in series with the first squib. The first active blocking circuit having a transistor in series with a first diode to block current in a first direction. The second active blocking circuit being in series with the second squib. The second active blocking circuit having a transistor in series with a first diode to block current in a second direction opposite of the first direction.

Abstract: A method of measuring squib loop resistance including non-linear elements in a restraint control module is disclosed by the present invention. The squib loop resistance is comprised of both linear and non-linear elements. The non-linear elements are linearized into resistive components about the bias points used to make the squib loop resistance measurement. The calculation of the linear squib loop resistance is provided by comparing the complete squib loop resistance and the linearized value of the non-linear elements.

Abstract: A method of measuring squib loop resistance including non-linear elements in a restraint control module is disclosed by the present invention. The squib loop resistance is comprised of both linear and non-linear elements. The non-linear elements are linearized into resistive components about the bias points used to make the squib loop resistance measurement. The calculation of the linear squib loop resistance is provided by comparing the complete squib loop resistance and the linearized value of the non-linear elements.

Abstract: A method for disposing of a pyrotechnic safety device includes providing an electronic control unit having a primary control unit and an auxiliary control unit. The auxiliary control unit includes a safing mode and a scrap mode, and operates in the safing mode in an initial state. The auxiliary control unit is switched from the safing mode to the scrap mode when the primary control unit sends a first predetermined signal. The auxiliary control unit is armed only if it receives a second predetermined signal from the primary control unit while the auxiliary control unit is operating in the scrap mode. The primary control unit sends the first and second predetermined signals to the auxiliary control unit based on signals the primary control unit receives from an external source. The primary control unit then disposes of a pyrotechnic safety device (PSD) by sending a deployment signal to the PSD based on another signal received from the external source.

Abstract: A method for disposing of a pyrotechnic safety device includes providing an electronic control unit having a primary control unit and an auxiliary control unit. The auxiliary control unit includes a safing mode and a scrap mode, and operates in the safing mode in an initial state. The auxiliary control unit is switched from the safing mode to the scrap mode when the primary control unit sends a first predetermined signal. The auxiliary control unit is armed only if it receives a second predetermined signal from the primary control unit while the auxiliary control unit is operating in the scrap mode. The primary control unit sends the first and second predetermined signals to the auxiliary control unit based on signals the primary control unit receives from an external source. The primary control unit then disposes of a pyrotechnic safety device (PSD) by sending a deployment signal to the PSD based on another signal received from the external source.

Abstract: A multi-sensor network having a plurality of receivers and sensors connected to a common communication line is provided. A controller will activate one of the plurality of receivers, thereby allowing one of the plurality of sensors to transmit data to the communication line. The plurality of sensors each individually have a logic device preventing more than one sensor from transmitting data in a given time interval.

Abstract: A sensor network and method of initializing the sensor network is shown. The network includes a receiver and sensor assemblies each having a first and second pin. The receiver and the sensor assemblies are connected in a daisy chain type configuration. Based on the amount of current passing from the first pin to the second pin of each sensor assembly, the sensor assemblies determine a discrete time signal window to output a current modulated signal to the receiver.

Abstract: A multi-sensor network having a plurality of receivers and sensors connected to a common communication line is provided. A controller will activate one of the plurality of receivers, thereby allowing one of the plurality of sensors to transmit data to the communication line. The plurality of sensors each individually have a logic device preventing more than one sensor from transmitting data in a given time interval.