JPS57142523A - Flame detector - Google Patents
Flame detectorInfo
- Publication number
- JPS57142523A JPS57142523A JP2860181A JP2860181A JPS57142523A JP S57142523 A JPS57142523 A JP S57142523A JP 2860181 A JP2860181 A JP 2860181A JP 2860181 A JP2860181 A JP 2860181A JP S57142523 A JPS57142523 A JP S57142523A
- Authority
- JP
- Japan
- Prior art keywords
- photo
- wave length
- circuit
- strength
- flame
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000035945 sensitivity Effects 0.000 abstract 2
- 239000003638 chemical reducing agent Substances 0.000 abstract 1
- 239000002131 composite material Substances 0.000 abstract 1
- 238000001514 detection method Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/60—Radiation pyrometry, e.g. infrared or optical thermometry using determination of colour temperature
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
Abstract
PURPOSE:To prevent the occurrence of an erroneous detection due to disturbance light and to enable detecting of a burning condition of a flame, by a method wherein a photo wave length detecting circuit and a photo strength detecting circuit are coupled to a photo sensor having two light collecting elements being different from each other in sensitivity to a photo wave length, and a flame is detected by finding the theoretical sum of the output. CONSTITUTION:A photo wave length detecting circuit 16 consists of logarithmic converters 4 and 5, a reducer 6, and a comparator 7, and is connected to a photo sensor 11 via an amplifiers 2 and 3. A photo strength circuit 17 consists of a composite device 10 and a comparator 11, and is coupled to the photo sensor 1 via the amplifiers 2 and 3. The sensor 1 is provided with two collecting elements 1a and 1b being different from each other in sensitivity to a photo wave length. When voltage setters 8 and 12 of each circuit recognize that a signal voltage corresponding to a photo wave length is equivalent to a given one and a strength of light to be detected exceeds a set strength, a high-level signal is fetched as a signal indicating a normal flame from an AND circuit 13.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2860181A JPS57142523A (en) | 1981-02-28 | 1981-02-28 | Flame detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2860181A JPS57142523A (en) | 1981-02-28 | 1981-02-28 | Flame detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS57142523A true JPS57142523A (en) | 1982-09-03 |
Family
ID=12253101
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2860181A Pending JPS57142523A (en) | 1981-02-28 | 1981-02-28 | Flame detector |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57142523A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58501909A (en) * | 1981-11-06 | 1983-11-10 | ラボラトイレス・フォ−ニア−・エス・エ− | Method for producing α-aspartyl phenylalanine methyl ester |
| JPS6148728A (en) * | 1984-08-16 | 1986-03-10 | サンタ・バ−バラ・リサ−チ・センタ− | Fire detection system controlled by microprocessor |
| JP2001343280A (en) * | 2000-06-02 | 2001-12-14 | Yamatake Corp | Flame detecting device |
| US8664580B2 (en) | 2011-02-23 | 2014-03-04 | Sharp Kabushiki Kaisha | Optical sensor and electronic equipment |
-
1981
- 1981-02-28 JP JP2860181A patent/JPS57142523A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58501909A (en) * | 1981-11-06 | 1983-11-10 | ラボラトイレス・フォ−ニア−・エス・エ− | Method for producing α-aspartyl phenylalanine methyl ester |
| JPS6148728A (en) * | 1984-08-16 | 1986-03-10 | サンタ・バ−バラ・リサ−チ・センタ− | Fire detection system controlled by microprocessor |
| JP2001343280A (en) * | 2000-06-02 | 2001-12-14 | Yamatake Corp | Flame detecting device |
| US8664580B2 (en) | 2011-02-23 | 2014-03-04 | Sharp Kabushiki Kaisha | Optical sensor and electronic equipment |
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