Smoke detector sensor network system and method
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
G08B-017/10
G08B-019/00
G08B-017/117
G08B-029/18
출원번호
US-0156213
(2014-01-15)
등록번호
US-9224281
(2015-12-29)
발명자
/ 주소
Zhang, Wei
출원인 / 주소
The Boeing Company
대리인 / 주소
Economou, John S.
인용정보
피인용 횟수 :
0인용 특허 :
4
초록▼
A system and method for detecting smoke in a compartment that includes a first set of sensors, a second set of sensors and a processor. Each sensor in the first set is configured to sense particles. Each sensor in the second set is configured to sense at least one gas. The processor is configured to
A system and method for detecting smoke in a compartment that includes a first set of sensors, a second set of sensors and a processor. Each sensor in the first set is configured to sense particles. Each sensor in the second set is configured to sense at least one gas. The processor is configured to receive first input data from the first set of sensors and second input data from the second set of sensors, to compare the second input data with a noise level when the first input data indicates that particles are present in the compartment, and to generate an alert signal when the second input data exceeds the noise level. The processor preferably calculates a rate of change of the second data and compares the second input data with the noise level only when the rate of change of the second data exceeds a third threshold.
대표청구항▼
1. A smoke detection system comprising: a first set of sensors positioned within a compartment, the first set of sensors configured to sense at least particles in the compartment;a second set of sensors positioned within the compartment, the second set of sensors configured to sense at least one gas
1. A smoke detection system comprising: a first set of sensors positioned within a compartment, the first set of sensors configured to sense at least particles in the compartment;a second set of sensors positioned within the compartment, the second set of sensors configured to sense at least one gas in the compartment;a processor configured to receive first input data from the first set of sensors and second input data from the second set of sensors, to compare the second input data with a second predetermined threshold indicating that gas is present in the compartment when the first input data exceeds a first predetermined threshold indicating that particles are present in the compartment, and to generate an alert signal when the second input data exceeds the second predetermined threshold; andwherein the processor uses a radial basis function to process the first input data and the second input data. 2. The smoke detection system of claim 1, wherein the processor is also configured calculate a rate of change of the second data and to compare the second input data with the second predetermined threshold only when the rate of change of the second data exceeds a third predetermined threshold. 3. The smoke detection system of claim 1, wherein the compartment is a cargo compartment in an aircraft. 4. The smoke detection system of claim 1, wherein there are more second sensors than first sensors. 5. The smoke detection system of claim 4, wherein the second sensors are positioned between the first sensors. 6. The smoke detection system of claim 4, wherein the first and second sensors are grouped in sets, with each set including a plurality of second sensors arrayed about an associated respective first sensor. 7. The smoke detection system of claim 4, wherein the first and second sensors are grouped in sets, with each set including a plurality of second sensors radially positioned about an associated respective first sensor. 8. The smoke detection system of claim 1, wherein the first sensors are included within multi-sensors that detect particles, heat and gas, and wherein the second sensors detect CO and/or CO2. 9. The smoke detection system of claim 1, wherein the second sensors are nano-technology gas sensors. 10. The smoke detection system of claim 1, wherein the second predetermined threshold comprises a noise level of gas in the compartment determined from the second input data when the first input data is below the first predetermined threshold. 11. A method for detecting smoke within a compartment using a smoke detection system including a first set of sensors positioned within a compartment and configured to sense at least particles in the compartment and a second set of sensors positioned within the compartment and configured to sense at least one gas in the compartment, the method comprising the steps of: receiving first input data from the first set of sensors;receiving second input data from the second set of sensors;comparing the first input data to a first predetermined threshold to determine if particles are present in the compartment;if the first input data exceeds the first predetermined threshold, comparing the second input data with a second predetermined threshold to determine if gas is present in the compartment;determining that smoke is present in the compartment when the second input data exceeds the second predetermined threshold; andwherein the step of comparing the second input data with a second predetermined threshold comprises the steps of:calculating a gas level concentration signal using a radial basis function, and comparing the gas level concentration signal with the second predetermined threshold. 12. The method of claim 11, further comprising the step of: calculating a rate of change of the second data, andwherein the step of comparing the second input data with the second predetermined threshold is performed only when the rate of change of the second data exceeds a third predetermined threshold. 13. The method of claim 11, further comprising the steps of: determining a noise level of gas in the compartment from the second input data when the first input data is below the first predetermined threshold, andsetting the second predetermined threshold to the determined noise level of gas. 14. The method of claim 11, further comprising the step of providing an alert signal when the determining step determines that smoke is present in the compartment. 15. The method of claim 11, wherein there are more second sensors than first sensors. 16. The method of claim 15, wherein the second sensors are positioned between the first sensors. 17. The method of claim 15, wherein the first and second sensors are grouped in sets, with each set including a plurality of second sensors arrayed about an associated respective first sensor. 18. The method of claim 15, wherein the first and second sensors are grouped in sets, with each set including a plurality of second sensors radially positioned about an associated respective first sensor.
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이 특허에 인용된 특허 (4)
Wong Jacob Y., False alarm resistant fire detector with improved performance.
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