Veoneer US, Inc.

Autoliv Asp, Incorporated

Other

Visteon Global Technolgoies, Inc.

Veoneer US Safety Systems, LLC

Arriver Software LLC

Vincent Colarossi

Bankim Patel

Stuart Koch

David Eiswerth

Myron Senyk

David James Tippy

Hubert Rothleitner

Colm Peter Boran

Michael Breunig

Paul Mario Camilleri

Grant Scott

Dario G Brisighella, Jr

Scott C Gordon

Viren B Merchant

Wolfram Budde

Ralf Kissling

Marco Liedtke

Peter Kowalczyk

Timothy John Blind

Phillippe Aubertin

Mark Andrew Glinka Endicott

Michael C Campbell

Nick Hunt

Michael Campbell

An electronic control unit for a restraint control module comprises a PSI5 communications interface configured to communicate with a remote sensor using a current-modulated signal with PSI5 compliance upon a two-wire interconnection. The PSI5 communications interface includes a signal driver configured to apply a signal voltage to a first signal terminal for driving current to the remote sensor via the two-wire interconnection. The PSI5 communications interface also includes a second signal terminal providing a return path for the current; and a resistor within the return path of the PSI5 communications interface. Several different alternative impedance balancing and damping circuits are provided to provide the resistor. The alternative impedance balancing and damping circuits include passive and active resistors. The impedance balancing and damping circuit may also provide current protection against damage due to fault currents. A method for operating a PSI5 communications interface of a restraint control module is also provided.

Sensor communication discrete control considering EMC compliance for restraint control module

An electronic controller of a restraint control system for a vehicle comprises an electronic control unit including a first serial interface. The electronic controller also comprises a communications controller including a second serial interface and a plurality of PSI5 (Peripheral Sensor Interface 5) digital communications interfaces. Each of the first and second serial interfaces are Serial Peripheral Interfaces (SPI) in direct communications with one another, and the digital communications interfaces are each configured to communicate with a remote sensor. The communications controller is configured to transmit a voltage sync pulse to each of the remote sensors via the PSI5 digital communications interfaces in response to a synchronization command received from the electronic control unit via the serial interconnection. The voltage sync pulses on each of the PSI5 interfaces may be staggered and non-overlapping to reduce EMI production and to reduce the current load of the electronic controller.

Remote sensor communication adaptive synchronization control for restraint control system

A squib driver circuit for deployment of a deployable restraint in a vehicle. The safety restraint may have a minimum firing voltage. The voltage regulator may regulate the input voltage to be the minimum firing voltage at the input terminal. The squib driver circuit may be formed on a single chip. The squib driver circuit may include a high side driver and a low side driver. An input terminal for receiving an input voltage used to fire the deployable restraint. The high side driver may supply current from the input terminal to the deployable restraint. The low side driver may supply current from deployable restraint to the electrical ground.

Squib diver circuit for a deployable restraint including an integrated circuit and a voltage regulator

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.

Delta-difference amplifier circuit for restraint control module

A system for testing a subject transistor with constant power. The system may include an amplifier, a measurement voltage source, and a exercise voltage source. The amplifier may have an output connected to a gate of the subject transistor. The amplifier may have a first input and a second input. The measurement voltage source may be connected to the first input of the amplifier for use in measuring characteristics of the subject transistor. The exercise voltage source may be connected to the first input of the amplifier for exercising the subject transistor. The second input of the amplifier may be connected to a source of the subject transistor through a resistor.

Constant power circuit with variable heating and measurement current capability

A method and system for diagnosing a squib loop in a restraint control module using a transient response is disclosed in the present application. The system may be used with a low energy actuator (LEA) which is primarily an inductive device. A diagnostic current may be applied to the squib loop for a diagnostic test period and the voltage between the feed line terminal and the return line terminal or the voltage between the return line terminal and the feed line terminal can be monitored at a specific time or times during the test period for the expected response (e.g. peak voltage, rise rate, etc). The current may also be reversed to check the correct polarity of a diode in the LEA.

Method and system for safe diagnosis of squib loop components using transient response characteristics for restraint control module

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.

Active power blocking circuit for restraint control module

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.

Integrated duplex deployment function with safety diagnostics for restraint control module

A method and system for diagnosing the squib leakage resistance through a restraint control module is disclosed in the present application. The newly proposed system and method provides a highly accurate measurement by minimizing/eliminating the effect of the unknown source voltage effects. The concept utilizes the squib leakage resistance diagnostic resources with a multi-step measurement approach, for example utilizing measurements of two currents and/or two voltages.

Diagnosis of squib loop leakage resistance

Voltage regulator for a squib driver circuit

A restraint control module is provided in this disclosure. The restraint control module is configured to communicate a sync pulse to a sensor. The control module may include a sync pulse driver circuit and a memory. The memory may store the waveform profile of a sync pulse. The sync pulse driver circuit generates a sync pulse in response to the waveform profile stored in the memory. The sync pulse may be transmitted to one or more sensors. The waveform profile stored in the memory may be derived from a sync pulse with reduced electro-magnetic emissions by applying spectrum analysis.

Sensor communication control shaped for EMC compliance

A squib driver circuit for deployment of an active safety restraint in a vehicle. The squib driver circuit may include a high side protection circuit. The high side protection circuit may include a comparator circuit to compare the input voltage to a reference voltage and activate a timer in response to the input voltage exceeding the reference voltage, the timer generating a disable signal to disable the high side driver after a predetermined period of time The high side protection circuit may disable the high side driver after a short is detected and elapse of the predetermined period of time. The squib driver circuit may be formed on a single chip.

Squib circuit high side battery short protection

A squib driver circuit for deployment of an active safety restraint in a vehicle. The squib driver circuit may include a high side protection circuit. The high side protection circuit may include a comparator circuit to compare a voltage at a high side feed terminal to a reference voltage and activate a timer in response to the voltage at the high side feed terminal exceeding the reference voltage, the timer generating a disable signal to disable the high side driver after a predetermined period of time. The high side protection circuit may disable the high side driver after the short is detected and elapse of the predetermined period of time. The squib driver circuit may be formed on a single chip.

Squib circuit high side ground short protection

A squib driver circuit for deployment of an active safety restraint in a vehicle. The squib driver circuit may include a low side protection circuit. The low side protection circuit may include a comparator circuit to compare a voltage at a low side return terminal to a reference voltage and activate a timer in response to the voltage at the low side return terminal exceeding the reference voltage, the timer generating a disable signal to disable the low side driver after a predetermined period of time. The low side protection circuit may disable the low side driver after the short is detected and elapse of the predetermined period of time. The squib driver circuit may be formed on a single chip.

Squib circuit low side battery short protection

A restraint control module is configured to communicate a sync pulse to a sensor. The control module includes a first sync pulse driver and a second sync pulse driver. The first sync pulse driver is connected to a first signal line and the second sync pulse driver connected to a second signal line. The first and second sync pulse drivers being configured to generate a differential sync pulse signal across the first signal line and second signal line using a first signal on the first signal line and a second signal on the second signal line.

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Dearborn Heights, MI, United States of America

Vincent Colarossi