CN201707755U - Triple-band infrared flame detector - Google Patents
Triple-band infrared flame detector Download PDFInfo
- Publication number
- CN201707755U CN201707755U CN2010202422842U CN201020242284U CN201707755U CN 201707755 U CN201707755 U CN 201707755U CN 2010202422842 U CN2010202422842 U CN 2010202422842U CN 201020242284 U CN201020242284 U CN 201020242284U CN 201707755 U CN201707755 U CN 201707755U
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- infrared
- signal processing
- sensing signal
- circuit
- flame detector
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Abstract
The utility model provides a triple-band infrared flame detector comprising three infrared sensing signal processing circuits with different receiving wave range, an AD conversion circuit which is connected with the output ends of the three infrared sensing signal processing circuits, and a digital signal processor which is connected with the AD conversion circuit; each infrared sensing signal processing circuit comprises an infrared sensor and an amplification circuit which are sequentially connected; and the infrared wavelengths that the three infrared sensors receive are respectively 4.0 to 4.2 mu m, 4.2 to 4.6 mu m and 4.8 to 5.2 mu m. The triple-band infrared flame detector has the beneficial effects of long detection distance, high sensitivity, strong anti-interference capability and stable work.
Description
Technical field
The utility model belongs to the flame detector field, especially relates to a kind of three frequency infrared flame detectors.
Background technology
Flame detector in the existing technology adopts UV/IR (ultraviolet/infrared) or IR/IR flame detector more, the wavelength that the infrared sensor that uses receives is not on the peak wavelength of flame, broader bandwidth, can not correctly receive the infrared signal that emits in the flame, can not correctly reflect the situation that fire takes place, and natural light, sunlight, light, interference sources such as electric welding disturb bigger to the infrared flame detector of prior art, can not well satisfy user's various requirement, the flame detector of prior art exists detection range near on the whole, reaction time is slow, poor anti jamming capability, the problem of job insecurity.
Summary of the invention
The purpose of this utility model provides that a kind of detection range is long, highly sensitive, antijamming capability is strong, three infrared flame detectors frequently of working stability.
The technical solution of the utility model is: a kind of three frequency infrared flame detectors, comprise three tunnel infrared ray sensing signal processing circuits with different receiving wave ranges, with three tunnel described infrared ray sensing signal processing circuit output terminal A/D convertor circuit that is connected and the digital signal processors that are connected with described A/D convertor circuit, each road infrared ray sensing signal processing circuit includes infrared sensor, the amplifying circuit that is connected successively;
The Infrared wavelength that described three infrared sensors are accepted is respectively 4.0 μ m-4.2 μ m, 4.2 μ m-4.6 μ m and 4.8 μ m-5.2 μ m.
Advantage and the good effect that the utlity model has are:
1, detection range is long, and under the situation of the normal benzine flame of 0.1m2, detection range can reach 60 meters;
2, antijamming capability is strong, obviously discerns flame and various nonflame radiation source, to as light such as halogen tungsten and mercury vapor lamp, external radiation, well heater, X ray, sunlight extremely strong anti-interference being arranged;
3, highly sensitive, for response time of normal benzine flame less than three seconds;
4, the visible angle scope is big, and level and vertical angle all can reach 90 °.
Description of drawings
Fig. 1 is a theory diagram of the present utility model;
Fig. 2 is the circuit theory diagrams of No. one amplifying circuit of the present utility model;
Fig. 3 is the circuit theory diagrams of A/D convertor circuit of the present utility model;
Embodiment
As Fig. 1, Fig. 2 and shown in Figure 3, the utility model, comprise three tunnel infrared ray sensing signal processing circuits with different receiving wave ranges, with three tunnel described infrared ray sensing signal processing circuit output terminal A/D convertor circuit that is connected and the digital signal processors that are connected with described A/D convertor circuit, each road infrared ray sensing signal processing circuit includes infrared sensor, the amplifying circuit that is connected successively, digital signal processor adopts dsp processor, model is TMS320F2407, and the chip model that A/D convertor circuit adopts is ADS7824UB.
The Infrared wavelength that described three infrared sensors are accepted is respectively:
4.0 μ m-4.2 μ m is used to survey the undesired signal that causes from high temperature source;
4.2 μ m-4.6 μ m is used to survey the Fire Radiation signal;
4.8μm-5.2μm。Be used to survey undesired signal from the background flicker.
As shown in Figure 2, it is one road infrared ray sensing signal processing circuit, infrared eye J1 signal output part passes through 3 pin of amplifying circuit U1A, 2 pin of amplifying circuit U1B, 2 pin of amplifying circuit U1C, 2 pin of amplifying circuit U1D, 2 pin of sampling holder U2 successively, signal is through the 8 pin output of amplifying circuit U2, described amplifying circuit U1A, U1B, U1C, U1D chip are AD8671, and described sampling holder U2 chip is AD781.
Other two-way infrared eye signal amplification circuits are with a road above-mentioned infrared eye signal amplification circuit.
As shown in Figure 3, when three road infrared eye signals after amplifying circuit amplifies, import 2,3,4 pin of AD conversion chip respectively, after the AD conversion, the output digital signal enters the input end of dsp processor.
After infrared eye detects signal, with the signal input amplifying circuit, after pre-service such as amplification, AD conversion, be input in the digital signal processor, digital signal processor is done the analysis of further intensity, frequency and duration to the voltage signal that receives, extract the characteristic information of flame, the various jamming light source of filtering, the output fire alarm signal, drive the actuating of relay, this signal is as the entry condition of automatic fire protection system, and warning message is recorded in the internal storage, can export inquiry by the RS-485 communication interface of standard.
More than an embodiment of the present utility model is had been described in detail, but described content only is preferred embodiment of the present utility model, can not be considered to be used to limit practical range of the present utility model.All equalizations of doing according to the utility model application range change and improve etc., all should still belong within the patent covering scope of the present utility model.
Claims (2)
1. infrared flame detector frequently, it is characterized in that: comprise three tunnel infrared ray sensing signal processing circuits with different receiving wave ranges, with three tunnel described infrared ray sensing signal processing circuit output terminal A/D convertor circuit that is connected and the digital signal processors that are connected with described A/D convertor circuit, each road infrared ray sensing signal processing circuit includes infrared sensor, the amplifying circuit that is connected successively.
2. a kind of three frequency infrared flame detectors according to claim 1, it is characterized in that: the Infrared wavelength that described three infrared sensors are accepted is respectively 4.0 μ m-4.2 μ m, 4.2 μ m-4.6 μ m and 4.8 μ m-5.2 μ m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202422842U CN201707755U (en) | 2010-06-30 | 2010-06-30 | Triple-band infrared flame detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202422842U CN201707755U (en) | 2010-06-30 | 2010-06-30 | Triple-band infrared flame detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201707755U true CN201707755U (en) | 2011-01-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202422842U Expired - Lifetime CN201707755U (en) | 2010-06-30 | 2010-06-30 | Triple-band infrared flame detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201707755U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102426753A (en) * | 2011-11-21 | 2012-04-25 | 上海大学 | Infrared multiparameter fire and gas detector |
| CN104217527A (en) * | 2014-08-21 | 2014-12-17 | 江门市丰鸣达科技有限公司 | Fire dual detection alarm device and method |
| CN105913606A (en) * | 2016-06-30 | 2016-08-31 | 王永福 | Spark detecting method utilizing infrared rays and spark detecting device utilizing infrared rays |
| CN106066211A (en) * | 2016-06-30 | 2016-11-02 | 王永福 | A kind of Spark plug optical fiber sensor method and system utilizing ultraviolet |
| CN106408843A (en) * | 2016-10-09 | 2017-02-15 | 九江中船消防设备有限公司 | Three-band infrared flame detector having automatic calibration function |
| CN108964784A (en) * | 2017-05-17 | 2018-12-07 | 南台科技大学 | Optical noise cancellation element |
-
2010
- 2010-06-30 CN CN2010202422842U patent/CN201707755U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102426753A (en) * | 2011-11-21 | 2012-04-25 | 上海大学 | Infrared multiparameter fire and gas detector |
| CN104217527A (en) * | 2014-08-21 | 2014-12-17 | 江门市丰鸣达科技有限公司 | Fire dual detection alarm device and method |
| CN105913606A (en) * | 2016-06-30 | 2016-08-31 | 王永福 | Spark detecting method utilizing infrared rays and spark detecting device utilizing infrared rays |
| CN106066211A (en) * | 2016-06-30 | 2016-11-02 | 王永福 | A kind of Spark plug optical fiber sensor method and system utilizing ultraviolet |
| CN106408843A (en) * | 2016-10-09 | 2017-02-15 | 九江中船消防设备有限公司 | Three-band infrared flame detector having automatic calibration function |
| CN106408843B (en) * | 2016-10-09 | 2019-08-02 | 九江中船消防设备有限公司 | A kind of three wave band infrared flame detectors having automatic calibration function |
| CN108964784A (en) * | 2017-05-17 | 2018-12-07 | 南台科技大学 | Optical noise cancellation element |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110112 |