US5296707A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for detecting movement of heat source
Assignee: Murata Manufacturing Co Ltd
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Filing: 1992-05-26
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Granted: 1994-03-22
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Expires: 2012-05-26
Abstract
Abstract In order to detect the movement of a heat source over a widened range by using a reduced number of pyroelectric type infrared sensors, a sensor section includes two infrared detecting means X and Y. The area to be observed by the infrared detecting means X is divided into two zones A and B while the area to be observed by the infrared detecting means Y is divided into two single zones a and b. The single zones A and a are overlapped on each other to form an overlap zone (A, a). The movement of the heat source between the single zone B and the single zone b, between the overlap zone (A, a) and the single zone B and between the overlap zone (A, a) and the single zone b is judged to detect the movement of the heat source over the entire area to be observed by the sensor section. In such a manner, two infrared detecting means can cover three zones to be observed.
Inventors
- 👤 Shinya Nozu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:59
CPC Classifications
G; G08; G08B; G08B13/00; G08B13/18; G08B13/189; G08B13/19; G08B13/193; G08B13/191
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
299 words
A heat source movement detecting system comprising: a sensor section including infrared detecting means for detecting change in temperature in a heat source; means for dividing the area to be observed by said infrared detecting means into a plurality of zones; means for overlapping at least two of said zones to form (a) at least one overlap zone comprising said at least two zones and (b) single zones without overlap; and discriminating means for judging the movement of the heat source between at least one of the single zones and the at least one overlap zone and between different single zones; said heat source movement detecting system being able to detect the movement of the heat source over the area to be observed by said sensor section by judging the movement of the heat source between at least one of the single zones and the at least one overlap zone, and between different single zones; wherein said infrared detecting means comprises at least two infrared sensors X and Y, the dividing means divides the area to be observed by said infrared sensor X into at least three single zones A, B and C and the area to be observed by said infrared sensor Y into at least three single zones a, b and c, said overlapping means combines said single zones A and a to form an overlap zone (A, a), and said discriminating means is able to judge the movement of the heat source between the single zones B and b, between the overlap zone (A, a) and the single zone B, and between the overlap zone (A, a) and the single zone b, wherein said heat source movement detecting system can detect the movement of the heat source over the entire area observed by said sensor section.
Claim 2
Dependent Claim
299 words
A heat source movement detecting system comprising: a sensor section including infrared detecting means for detecting change in temperature in a heat source; means for dividing the area to be observed by said infrared detecting means into a plurality of zones; means for overlapping at least two of said zones to form (a) at least one overlap zone comprising said at least two zones and (b) single zones without overlap; and discriminating means for judging the movement of the heat source between at least one of the single zones and the at least one overlap zone and between different single zones; said heat source movement detecting system being able to detect the movement of the heat source over the area to be observed by said sensor section by judging the movement of the heat source between at least one of the single zones and the at least one overlap zone, and between different single zones; wherein said infrared detecting means comprises at least two infrared sensors X and Y, the dividing means divides the area to be observed by said infrared sensor X into at least three single zones A, B and C and the area to be observed by said infrared sensor Y into at least three single zones a, b and c, said overlapping means combines said single zones A and a to form an overlap zone (A, a), and said discriminating means is able to judge the movement of the heat source between the single zones B and b, between the overlap zone (A, a) and the single zone B, and between the overlap zone (A, a) and the single zone b, wherein said heat source movement detecting system can detect the movement of the heat source over the entire area observed by said sensor section.
Claim 3
Dependent Claim
24 words
A heat source movement detecting system as defined in claim 1 wherein the infrared detecting means comprises at least two pyroelectric type infrared sensors.
Claim 4
Dependent Claim
23 words
A heat source movement detecting system as defined in claim 1 wherein said dividing means is in the form of a Fresnel lens.
Claim 5
Dependent Claim
23 words
A heat source movement detecting system as defined in claim 2 wherein said dividing means is in the form of a Fresnel lens.
Claim 6
Dependent Claim
36 words
A heat source movement detecting system as defined in claim 1, wherein the overlapping means forms a plurality of overlap zones and the discriminating means judges the movement of the heat source between different overlap zones.
Claim 7
Independent Claim
251 words
A method of detecting the movement of a heat source over an entire area to be observed, the method comprising the steps of: providing a sensor section including infrared detecting means for detecting change in temperature in the heat source; dividing the area to be observed by said sensor section into a plurality of zones; overlapping at least two of said zones to form (a) at least one overlap zone comprising said at least two zones and (b) single zones without overlap; and judging the movement of said heat source between at least one of the single zones and the at least one overlap zone, and between different single zones; wherein said infrared detecting means comprises at least two infrared sensors X and Y, the dividing step comprises dividing the area to be observed by said infrared sensor X into at least three single zones A, B and C and the area to be observed by said infrared sensor Y into at least three single zones a, b and c, said overlapping step comprises combining said single zones A and a to form an overlap zone (A, a), and discriminating means for judging the movement of the heat source between the single zones B and b, between the overlap zone (A, a) and the single zone B, and between the overlap zone (A, a) and the single zone b, wherein said method of detecting can detect the movement of the heat source over the entire area observed by said sensor section.
Claim 8
Independent Claim
251 words
A method of detecting the movement of a heat source over an entire area to be observed, the method comprising the steps of: providing a sensor section including infrared detecting means for detecting change in temperature in the heat source; dividing the area to be observed by said sensor section into a plurality of zones; overlapping at least two of said zones to form (a) at least one overlap zone comprising said at least two zones and (b) single zones without overlap; and judging the movement of said heat source between at least one of the single zones and the at least one overlap zone, and between different single zones; wherein said infrared detecting means comprises at least two infrared sensors X and Y, the dividing step comprises dividing the area to be observed by said infrared sensor X into at least three single zones A, B and C and the area to be observed by said infrared sensor Y into at least three single zones a, b and c, said overlapping step comprises combining said single zones A and a to form an overlap zone (A, a), and discriminating means for judging the movement of the heat source between the single zones B and b, between the overlap zone (A, a) and the single zone B, and between the overlap zone (A, a) and the single zone b, wherein said method of detecting can detect the movement of the heat source over the entire area observed by said sensor section.
Claim 9
Dependent Claim
20 words
A method as defined in claim 6 wherein the infrared detecting means comprises at least two pyroelectric type infrared sensors.
Claim 10
Dependent Claim
15 words
A method as defined in claim 6 wherein said dividing step utilizes Fresnel lens means.
Claim 11
Dependent Claim
15 words
A method as defined in claim 7 wherein said dividing step utilizes Fresnel lens means.
Claim 12
Dependent Claim
34 words
A method as defined in claim 6, wherein the overlapping step includes forming a plurality of overlap zones and the judging step includes judging the movement of the heat source between different overlap zones.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-03-21 | 1997-09-20 | 1998-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-03-21 | 2001-09-20 | 2002-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-03-21 | 2005-09-20 | 2006-03-22 | $7700.00 | Window Closed / Lapsed |