Integrated duplex deployment function with safety diagnostics for restraint control module
AssigneeVeoneer US, Inc.
InventorsDavid Eiswerth, Vincent Colarossi, Marco Liedtke, Wolfram Budde
Life of this patent
Estimating the term…
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.
Claims21
An active power blocking circuit in series with a squib, the active power blocking circuit comprising:
- a logic circuit;
- a first switch having a first side connected to a positive connection and a second side connected to a negative connection;
- a second switch having a first side connected to the positive connection and a second side connected to the negative connection through a diode;
- and
- an amplifier connected the second side of the second switch, an output of the amplifier being connected to the logic circuit.
A duplex restraint module, the duplex restraint module comprising:
- a first squib;
- a first active power blocking circuit in series with the first squib, the first active power blocking circuit comprising a logic circuit, a first switch, a second switch and an amplifier, the first switch having a first side connected to a positive connection and a second side connected to a negative connection, the second switch having a first side connected to the positive connection and a second side connected to the negative connection through a diode, an amplifier connected the second side of the second switch, an output of the amplifier being connected to the logic circuit;
- a second squib;
- and
- a second active power blocking circuit in series with the second squib, the second active power blocking circuit comprising a logic circuit, a first switch, a second switch and an amplifier, the first switch having a first side connected to a positive connection and a second side connected to a negative connection, the second switch having a first side connected to the positive connection and a second side connected to the negative connection through a diode, an amplifier connected the second side of the second switch, an output of the amplifier being connected to the logic circuit.
An active power blocking circuit in series with a squib, the active power blocking circuit comprising:
- a logic circuit having an active state and a first sensing state;
- a first switch having a first side connected to a positive connection and a second side connected to a negative connection, the first switch conducting in the active state;
- a second switch having a first side connected to the positive connection and a second side connected to the negative connection through a diode, the second switch conducting in the first sensing state;
- and
- an amplifier connected the second side of the second switch, an output of the amplifier being connected to the logic circuit.
An active power blocking circuit in series with a squib, the active power blocking circuit comprising:
- a logic circuit;
- a first switch having a first side connected to a positive connection and a second side connected to a negative connection;
- a second switch having a first side connected to the positive connection and a second side connected to the negative connection through a diode;
- and
- a third switch having a first side connected to the positive connection and a second side connected to the negative connection through a diode;
- a first amplifier having a positive input connected to the second side of the third switch and a negative input connected to an internal reference voltage, and an output of the first amplifier being connected to the logic circuit;
- and
- a second amplifier having a negative input connected a squib monitoring input and a positive input connected to an internal reference voltage, and an output of the second amplifier being connected to the logic circuit.
Dependencies are inferred from the claim text.