IPC분류정보
국가/구분 |
United States(US) Patent
등록
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국제특허분류(IPC7판) |
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출원번호 |
US-0720778
(2003-11-24)
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발명자
/ 주소 |
- Johnson,Eric Arthur
- Kulesza,Joseph Duane
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출원인 / 주소 |
- Advanced Design Consulting USA, Inc.
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대리인 / 주소 |
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인용정보 |
피인용 횟수 :
13 인용 특허 :
19 |
초록
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A device for collecting data on small-arms usage that senses when a shot has been fired from a gun using its acceleration, acoustic noise or RF emissions; measures the interval between shots so that the firing rate may be determined; measures the time at which each shot has been fired; measures the
A device for collecting data on small-arms usage that senses when a shot has been fired from a gun using its acceleration, acoustic noise or RF emissions; measures the interval between shots so that the firing rate may be determined; measures the time at which each shot has been fired; measures the temperature of the barrel when each shot is fired; stores any combination of temperature, firing rate, firing intervals and time data for subsequent analysis and has an electrical interface to transfer data from the device to a computer or other data collection device.
대표청구항
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What is claimed is: 1. A device for collecting data on usage of a firearm having a barrel, comprising: a single accelerometer mounted on the firearm producing a signal on a signal output in response to sensing an impulse in the weapon; a processor having an input coupled to the signal output, such
What is claimed is: 1. A device for collecting data on usage of a firearm having a barrel, comprising: a single accelerometer mounted on the firearm producing a signal on a signal output in response to sensing an impulse in the weapon; a processor having an input coupled to the signal output, such that a signal on the signal output of the accelerometer which exceeds a threshold level is sensed as a shot; the processor having a hold-off delay after a shot is sensed such that additional signals on the signal output of the accelerometer are not sensed as shots until after the hold-off delay, the hold-off delay being chosen such that all subsequent impulses produced during firing a shot fall within the hold-off delay; a memory coupled to the processor, for storing information related to shots sensed by the processor. 2. The device of claim 1, in which the information stored in the memory comprises an interval between firing of shots. 3. The device of claim 2, in which the interval between shots is used by the processor to derive a fire rate for the firearm, and the information stored in the memory comprises a maximum fire rate. 4. The device of claim 1, further comprising a temperature sensor coupled to the barrel of the firearm and the processor, in which the information stored in the memory comprises temperature of the barrel as each shot is fired. 5. The device of claim 4, further comprising at least one amplifier having an input coupled to the temperature sensor and an output coupled to the processor. 6. The device of claim 5, in which the processor is programmed to apply power to the amplifier only during a measurement period, such that power consumption is reduced. 7. The device of claim 4, in which the temperature sensor is a thermocouple in contact with the barrel. 8. The device of claim 4, in which the temperature sensor is an infrared detector. 9. The device of claim 1, further comprising an interface coupled to the processor, for transferring data from the device to an external data collection device. 10. The device of claim 9, further comprising an external data collection device comprising a programmed computer coupled to the processor through the interface. 11. The device of claim 1, in which the information stored in the memory is stored as a histogram. 12. The device of claim 1, in which the information stored in the memory comprises date and time that each shot was fired. 13. The device of claim 1, in which the memory is non-volatile memory. 14. The device of claim 1, in which the information stored in the memory comprises identifying data regarding the weapon, selected from the group comprising serial number, barrel number, model number and last date of service. 15. The device of claim 1, in which the hold-off delay is variable. 16. The device of claim 1, further comprising a case housing at least the processor and the memory. 17. The device of claim 16, in which the device further comprises clips for attaching the case to the barrel, and a thermal insulator applied to the case, for providing thermal insulation between the case and the barrel. 18. The device of claim 17, further comprising a temperature sensor embedded within a contact surface of the thermal insulator, such that the sensor is in contact with the barrel of the firearm when the case is mounted to the barrel by the clips, the sensor being coupled to the processor, and the information stored in the memory comprises temperature of the barrel as each shot is fired. 19. The device of claim 16, in which the device further comprises a strap for attaching the case to the barrel and a plurality of segments of thermal insulator for providing thermal insulation between the case and the barrel, the segments being clamped to the barrel by the strap, the case being attached to one of the plurality of segments. 20. The device of claim 19, further comprising a temperature sensor passing through one of the segments of thermal insulator, such that the sensor is in contact with the barrel of the firearm when the case is mounted to the barrel by the strap, the sensor being coupled to the processor, and the information stored in the memory comprises temperature of the barrel as each shot is fired. 21. The device of claim 16, in which the case further comprises a mounting rail for mounting the case to the barrel, and a heat shield for providing thermal insulation between the case and the barrel. 22. An electronic system for collecting data from small-arms, comprising: at least one device for collecting data on usage of a firearm having a barrel, comprising: a single accelerometer mounted on the firearm producing a signal on a signal output in response to sensing an impulse in the weapon; a processor having an input coupled to the signal output, such that a signal on the signal output of the accelerometer which exceeds a threshold level is sensed as a shot; the processor having a hold-off delay after a shot is sensed such that additional signals on the signal output of the accelerometer are not sensed as shots until after the hold-off delay, the hold-off delay being chosen such that all subsequent impulses produced during firing a shot fall within the hold-off delay; a memory coupled to the processor, for storing information related to shots sensed by the processor; and an interface coupled to the processor, for transferring data from the device; an external data collection device comprising a programmed computer coupled to the processor through the interface. 23. A method of collecting data on usage of a firearm having a barrel, comprising the steps of: mounting a single accelerometer on the firearm, the accelerometer producing a signal on a signal output in response to sensing an impulse in the weapon; processing the signal in a processor, such that a signal on the signal output of the accelerometer which exceeds a threshold level is sensed as a shot; after a shot is sensed, starting a hold-off delay, such that additional signals on the signal output of the accelerometer are not sensed as shots until after the hold-off delay, the hold-off delay being chosen such that all subsequent impulses produced during firing a shot fall within the hold-off delay; storing information related to shots sensed by the processor in a memory. 24. The method of claim 23, in which step of storing information comprises storing an interval between firing of shots. 25. The method of claim 24, further comprising the steps of deriving a fire rate for the firearm from the interval between shots, and in which step of storing information comprises storing a maximum fire rate in the data. 26. The method of claim 24, further comprising the step of sensing barrel temperature after a shot is detected and in which step of storing information comprises storing information on barrel temperature in the memory. 27. The method of claim 23, in which the step of storing information comprises storing date and time that each shot was fired in the memory. 28. The method of claim 23, in which the information stored in the memory is stored as a histogram. 29. The method of claim 23, further comprising the step of storing identifying data in the memory regarding the weapon, selected from the group comprising serial number, barrel number, model number and last date of service. 30. The method of claim 23, further comprising the step of unloading the stored information from the memory to an external data collection device comprising a programmed computer coupled to the processor through an interface. 31. A device for collecting data on usage of a firearm having a barrel, comprising: an RF detector mounted on the firearm producing a signal on a signal output in response to sensing a radio-frequency impulse; a processor having an input coupled to the signal output, such that a signal on the signal output of the RF detector which exceeds a threshold level is sensed as a shot; a memory coupled to the processor, for storing information related to shots sensed by the processor. 32. The device of claim 31, in which the information stored in the memory comprises an interval between firing of shots. 33. The device of claim 32, in which the interval between shots is used by the processor to derive a fire rate for the firearm, and the information stored in the memory comprises a maximum fire rate. 34. The device of claim 31, further comprising a temperature sensor coupled to the barrel of the firearm and the processor, in which the information stored in the memory comprises temperature of the barrel as each shot is fired. 35. The device of claim 34, further comprising at least one amplifier having an input coupled to the temperature sensor and an output coupled to the processor. 36. The device of claim 35, in which the processor is programmed to apply power to the amplifier only during a measurement period, such that power consumption is reduced. 37. The device of claim 34, in which the temperature sensor is a thermocouple in contact with the barrel. 38. The device of claim 34, in which the temperature sensor is an infrared detector. 39. The device of claim 31, further comprising an interface coupled to the processor, for transferring data from the device to an external data collection device. 40. The device of claim 39, further comprising an external data collection device comprising a programmed computer coupled to the processor through the interface. 41. The device of claim 31, in which the information stored in the memory is stored as a histogram. 42. The device of claim 31, in which the information stored in the memory comprises date and time that each shot was fired. 43. The device of claim 31, in which the memory is non-volatile memory. 44. The device of claim 31, in which the information stored in the memory comprises identifying data regarding the weapon, selected from the group comprising serial number, barrel number, model number and last date of service. 45. The device of claim 31, in which the hold-off delay is variable. 46. The device of claim 31, further comprising a case housing at least the processor and the memory. 47. The device of claim 46, in which the device further comprises clips for attaching the case to the barrel, and a thermal insulator applied to the case, for providing thermal insulation between the case and the barrel. 48. The device of claim 47, further comprising a temperature sensor embedded within a contact surface of the thermal insulator, such that the sensor is in contact with the barrel of the firearm when the case is mounted to the barrel by the clips, the sensor being coupled to the processor, and the information stored in the memory comprises temperature of the barrel as each shot is fired. 49. The device of claim 46, in which the device further comprises a strap for attaching the case to the barrel and a plurality of segments of thermal insulator for providing thermal insulation between the case and the barrel, the segments being clamped to the barrel by the strap, the case being attached to one of the plurality of segments. 50. The device of claim 49, further comprising a temperature sensor passing through one of the segments of thermal insulator, such that the sensor is in contact with the barrel of the firearm when the case is mounted to the barrel by the strap, the sensor being coupled to the processor, and the information stored in the memory comprises temperature of the barrel as each shot is fired. 51. The device of claim 46, in which the case further comprises a mounting rail for mounting the case to the barrel, and a heat shield for providing thermal insulation between the case and the barrel.
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