Active blast countermeasures
First Claim
1. An explosion countermeasure system, comprising:
- a first sensor device including a plurality of accelerometers configured to detect vertical acceleration of a vehicle; and
a processor in communication with said first sensor device, said processor configured to process acceleration signals received from said first sensor device and to initiate a countermeasure based on results of processing the acceleration signals;
wherein, said plurality of accelerometers are included in a sensor package and arranged to detect acceleration in the same direction,the accelerometers in said sensor package share a sampling channel, with each of the accelerometers in said sensor package being assigned a different time slot, andsaid processor is further configured with an integration module that integrates the acceleration signals to calculate a change in velocity, and initiating the countermeasure is based on (a) an initial acceleration exceeding a first threshold, and (b) a velocity change exceeding a second threshold.
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Abstract
An explosion countermeasure system is provided including a first sensor device with a plurality of accelerometers configured to detect vertical acceleration of a vehicle; a countermeasure; a safe and arming device configured to impede activation of the countermeasure; and a processor in communication with the first sensor device and the safe and arming device. The processor may be configured to process acceleration signals received from the first sensor device and to make ready the safe and arming device and initiate the countermeasure based on results of processing the acceleration signals. Making ready the safe and arming device may be based on an initial acceleration exceeding a first threshold, and initiating the countermeasure may be based on the initial acceleration exceeding a second threshold and a velocity change exceeding a third threshold.
29 Citations
28 Claims
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1. An explosion countermeasure system, comprising:
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a first sensor device including a plurality of accelerometers configured to detect vertical acceleration of a vehicle; and a processor in communication with said first sensor device, said processor configured to process acceleration signals received from said first sensor device and to initiate a countermeasure based on results of processing the acceleration signals; wherein, said plurality of accelerometers are included in a sensor package and arranged to detect acceleration in the same direction, the accelerometers in said sensor package share a sampling channel, with each of the accelerometers in said sensor package being assigned a different time slot, and said processor is further configured with an integration module that integrates the acceleration signals to calculate a change in velocity, and initiating the countermeasure is based on (a) an initial acceleration exceeding a first threshold, and (b) a velocity change exceeding a second threshold. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. An explosion countermeasure system, comprising:
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a first sensor device including a plurality of accelerometers configured to detect vertical acceleration of a vehicle; a countermeasure; a safe and arming device configured to impede activation of said countermeasure; a processor in communication with said first sensor device and said safe and arming device, said processor configured to process acceleration signals received from said first sensor device and to make ready the safe and arming device and initiate the countermeasure based on results of processing the acceleration signals; wherein, making ready the safe and arming device is based on an initial acceleration exceeding a first threshold, initiating the countermeasure is based on the initial acceleration exceeding a second threshold, and a velocity change exceeding a third threshold, and the velocity change is calculated based at least in part on integrating a plurality of acceleration readings. - View Dependent Claims (21, 22, 23, 24)
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25. An explosion detection system comprising:
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a communication bus in communication with a plurality of sampling channels, each sampling channel including multiplexed acceleration signals from a plurality of sensors included within a sensor package; and a processor configured to process the multiplexed acceleration signals from the plurality of sampling channels, determine the occurrence of an explosion based on the acceleration signals, and initiate an explosion countermeasure based on the determination that an explosion has occurred, wherein processing the multiplexed acceleration signals includes determining an acceleration value for the sensor package based on the acceleration signals from at least two of the plurality of sensors included within the sensor package, and an effective sampling rate for the sensor package is greater than a sampling rate of each of the plurality of sensors included within the sensor package. - View Dependent Claims (26, 27, 28)
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Specification