CN112113660A - Calibration and acceptance tool and calibration and acceptance method for optical flame detector - Google Patents
Calibration and acceptance tool and calibration and acceptance method for optical flame detector Download PDFInfo
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- CN112113660A CN112113660A CN202010980272.8A CN202010980272A CN112113660A CN 112113660 A CN112113660 A CN 112113660A CN 202010980272 A CN202010980272 A CN 202010980272A CN 112113660 A CN112113660 A CN 112113660A
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- 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
- G01J1/00—Photometry, e.g. photographic exposure meter
- G01J1/42—Photometry, e.g. photographic exposure meter using electric radiation detectors
- G01J1/429—Photometry, e.g. photographic exposure meter using electric radiation detectors applied to measurement of ultraviolet light
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- 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
- G01J1/00—Photometry, e.g. photographic exposure meter
- G01J1/42—Photometry, e.g. photographic exposure meter using electric radiation detectors
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- 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
- G01J5/0014—Radiation pyrometry, e.g. infrared or optical thermometry for sensing the radiation from gases, flames
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- 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
- G01J5/10—Radiation pyrometry, e.g. infrared or optical thermometry using electric radiation detectors
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- 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
- G01J5/80—Calibration
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- 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
- G01J1/00—Photometry, e.g. photographic exposure meter
- G01J1/42—Photometry, e.g. photographic exposure meter using electric radiation detectors
- G01J1/44—Electric circuits
- G01J2001/444—Compensating; Calibrating, e.g. dark current, temperature drift, noise reduction or baseline correction; Adjusting
Abstract
The invention relates to a calibration and acceptance tool and a calibration and acceptance method for an optical flame detector, belongs to the technical field of optical detector calibration, and solves the problem that the consistency of a product after calibration is not high due to the existing test method. The calibration and acceptance tool for the optical flame detector comprises an ultraviolet infrared light source, an optical path pipe and a light guide cover; the ultraviolet light source is arranged at one end of the light passage pipe, the other end of the light passage pipe is connected with the first end part of the light guide cover, the optical flame detector to be detected is positioned at the second end part of the light guide cover, and ultraviolet light emitted by the ultraviolet light source can reach the optical flame detector through the light passage pipe and the light guide cover. The calibration and acceptance tool for the optical flame detector can control the incident light intensity and the incident angle, isolate background radiation and effectively improve the consistency and efficiency of debugging and testing.
Description
Technical Field
The invention relates to the technical field of optical detector calibration, in particular to a calibration and acceptance tool and a calibration and acceptance method for an optical flame detector.
Background
Modern special vehicles are generally equipped with a fire extinguishing and explosion suppression system for realizing the detection of common fire or explosion, realizing the functions of automatically extinguishing the fire, suppressing the explosion of oil gas and the like, and are important parts for ensuring the safety of personnel and vehicles. The optical flame detector is an eye of a fire extinguishing and explosion suppression system, realizes millisecond detection of flame, and is one of the most important links of explosion suppression work.
The optical flame detector adopts a purple-infrared composite detection mode and uses an infrared sensor. Due to process control, different infrared sensors have different detection capabilities, which are expressed by the difference of indexes such as detection rate, voltage response rate and the like. In the production process, in order to avoid poor performance consistency of the optical flame sensor caused by sensor difference, debugging test operation needs to be carried out on the optical flame detector.
In the production process of the active optical detector, candle fire is used as a light source for calibration operation, and debugging and testing are performed after a fixed distance from the light source to the optical detector is set.
In the debugging and testing scheme, the light source is easily influenced by the candle, air flow and background radiation, and the light intensity is changed in the debugging and testing process, so that the consistency of the product after calibration is not high, and certain influence is brought to the performance; when the debugging test of part of optical detectors is finished, the problem that secondary debugging test is needed exists.
Disclosure of Invention
In view of the above analysis, the present invention aims to provide a calibration and acceptance tool and a calibration and acceptance method for an optical flame detector, which can control the incident light intensity and the incident angle, isolate background radiation, and effectively improve the consistency and efficiency of debugging and testing.
The purpose of the invention is mainly realized by the following technical scheme:
a calibration and acceptance tool for an optical flame detector is characterized by comprising an ultraviolet infrared light source, an optical path tube and a light guide cover; the ultraviolet light source is arranged at one end of the light passage pipe, the other end of the light passage pipe is connected with the first end part of the light guide cover, the optical flame detector to be detected is positioned at the second end part of the light guide cover, and ultraviolet light emitted by the ultraviolet light source can reach the optical flame detector through the light passage pipe and the light guide cover.
Further, the light path tube includes a light path sleeve and an incident angle adjusting sleeve, the violet infrared light source is mounted at one end of the light path sleeve, the other end of the light path sleeve is connected to one end of the incident angle adjusting sleeve, and the other end of the incident angle adjusting sleeve is connected to the first end of the light guide cover.
Furthermore, the incident angle adjusting sleeve is of a corrugated structure, the corrugated structure is formed by connecting a plurality of foldable corrugated sheets along the folding and stretching direction, and the length and the angle of the incident angle adjusting sleeve can be changed by adjusting the corrugated structure on the incident angle adjusting sleeve.
Further, the optical path tube comprises an expansion sleeve and an angle adjusting joint, one end of the expansion sleeve is connected with the ultraviolet light source, the other end of the expansion sleeve is connected with one end of the angle adjusting joint, and the other end of the angle adjusting joint is connected with the first end of the light guide cover.
Further, the telescopic sleeve (8) comprises an inner pipe, an outer pipe and a sealing ring.
Further, the light guide cover is of a conical structure, and the inner diameter of the first end portion of the light guide cover is larger than that of the second end portion of the light guide cover.
Further, the optical flame detector calibration and acceptance tool further comprises a control and measurement device, and the control and measurement device can provide a power supply for the ultraviolet infrared light source.
Further, the optical flame detector calibration and acceptance tool further comprises an optical sensing device, and the optical sensing device is arranged in the optical path pipe and close to the ultraviolet and infrared light source.
A calibration and acceptance method of an optical flame detector is provided, which uses the calibration and acceptance tool of the optical flame detector in the technical scheme; the method comprises the following steps:
s1, starting a control and measurement device and calibrating the purple infrared light source;
s2, adjusting the distance from the ultraviolet infrared light source to the second end part of the light guide cover and calibrating the optical flame detector;
s3, adjusting the distance from the ultraviolet light source to the second end part of the light guide cover to the maximum effective length, and checking and accepting the optical flame detector;
and S4, adjusting the angle of the light guide cover, and checking and accepting the optical flame detector.
Further, in S4, an angle between an axis of the light guide cover and an axis of the light path pipe is 45 °.
The invention can realize at least one of the following beneficial effects:
(1) the calibration and acceptance tool for the optical flame detector can provide a stable light source as an excitation signal of the flame detector, and the light source signal has a feedback result, so that the result is visible, the instability of manually adjusting the flame light source is avoided, and the consistency of the calibration result is improved.
(2) The calibration and acceptance tool for the optical flame detector provides an isolation function of background radiation, the calibration operation is less influenced by environmental radiation, and the calibration consistency is improved.
(3) The distance from the light source to the flame detector and the light incident angle of the calibration and acceptance tooling of the optical flame detector can be conveniently adjusted through the incident angle adjusting sleeve, so that the error in manual adjustment is avoided, and the calibration consistency is improved.
In the invention, the technical schemes can be combined with each other to realize more preferable combination schemes. Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and drawings.
Drawings
The drawings are only for purposes of illustrating particular embodiments and are not to be construed as limiting the invention, wherein like reference numerals are used to designate like parts throughout.
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is a schematic view of an adjustment length of an incident angle adjusting sleeve according to an embodiment of the present invention;
FIG. 3 is a schematic view of an angle of adjustment of an incident angle adjusting sleeve according to an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of another embodiment of the present invention;
fig. 5 is a cross-sectional view of the telescopic sleeve of the present invention.
Reference numerals:
1-control and measurement device, 2-ultraviolet light source, 3-optical sensing device, 4-optical channel sleeve, 5-incidence angle adjusting sleeve, 6-light guide cover, 7-angle adjusting joint, 8-telescopic sleeve, 81-inner tube, 82-outer tube and 83-sealing ring.
Detailed Description
The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, which form a part hereof, and which together with the embodiments of the invention serve to explain the principles of the invention and not to limit its scope.
In the description of the embodiments of the present invention, it should be noted that, unless otherwise explicitly stated or limited, the term "connected" should be interpreted broadly, and may be, for example, a fixed connection, a detachable connection, an integrated connection, a mechanical connection, an electrical connection, a direct connection, or an indirect connection via an intermediate medium. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Example 1
One embodiment of the present invention, as shown in fig. 1 to fig. 3, discloses an optical flame detector calibration and acceptance tool, which comprises a light source generation system and a light path adjustment system, wherein the light source generation system comprises a control and measurement device 1, a violet infrared light source 2 and a light sensing device 3, and the light path adjustment system comprises a light path pipe and a light guide cover 6.
Ultraviolet light and infrared light that 2 ultraviolet light sources sent get into light guide cover (6) through the light path pipe, the length of light path pipe and the angle of export are adjustable, ultraviolet light is through the light path pipe adjust distance and/or angle after 6 uses the optics flame detector that need detect of light guide cover, the photosensitive sensor of optics flame detector receives the shining back of light, can produce photosensitive signal value, according to the photosensitive signal value that produces, calibrate and accept optics flame detector.
The control and measurement device 1 is a power supply and control component of the calibration and acceptance tool of the optical flame detector in the embodiment. The control and measurement device 1 supplies power to the ultraviolet light source 2, and meanwhile, according to the feedback of the light sensing device 3, the control and measurement device 1 can automatically adjust the input current of the ultraviolet light source 2.
The light path pipe includes a light path sleeve 4 and an incident angle adjusting sleeve 5, and the incident angle adjusting sleeve 5 is connected to a light guide cover 6. The ultraviolet-infrared light source 2 includes a plurality of groups of ultraviolet lamps and infrared lamps, and can emit ultraviolet light and infrared light. The violet infrared light source 2 is disposed within the light path sleeve 4, and ultraviolet light and infrared light emitted by the violet infrared light source 2 are parallel to the light path sleeve 4. The light path sleeve 4 is a cylindrical sleeve with two open ends, the ultraviolet light source 2 and the control and measurement device 1 are arranged at one end of the cylindrical sleeve, and the other end of the cylindrical sleeve is connected with the incidence angle adjusting sleeve 5. The shape of the light passage sleeve 4 is not limited to the cylindrical shape, and the light passage sleeve 4 may be any other shape that can cooperate with the ultraviolet-infrared light source and the incident angle adjusting sleeve 5 and allow ultraviolet-infrared light to horizontally enter the incident angle adjusting sleeve 5.
The incident angle adjusting sleeve 5 is a cylindrical sleeve of a corrugated structure connected by a plurality of foldable corrugated pieces in a folding and stretching direction. The incidence angle adjusting sleeve 5 is connected to the light path sleeve 4 at one end and to the light guide cover 6 at the other end, and preferably, the incidence angle adjusting sleeve 5 is connected to the light path sleeve 4 and the light guide cover 6 by a screw thread and a quick coupling. By adjusting the corrugation on the angle of incidence adjustment sleeve 5, a change of the length and/or angle of the angle of incidence adjustment sleeve 5 can be achieved.
The light guide cover 6 is a conical sleeve, the light guide cover 6 can gather a purple infrared light source, and can shield an environmental light source at the same time, and is used as a transition structure of the radial size between the incident angle adjusting sleeve 5 and the optical flame detector to be checked. The conical sleeve of the light guide 6 comprises a first end and a second end, the inner diameter of the first end being smaller than the inner diameter of the second end. The first end is fixedly connected with the incidence angle adjusting sleeve 5 through screw threads and a quick coupling, and the second end faces the detected optical flame detector. As shown in fig. 2, the length of the incident angle adjusting sleeve 5 can be adjusted by increasing or decreasing the distance between the foldable corrugated sheets of the incident angle adjusting sleeve 5. As shown in fig. 3, the angle between the axis of the incident angle adjusting sleeve 5 and the axis of the light guide cover 5 can be changed by increasing the distance between the single-sided foldable corrugated sheets. When the corrugated sheet on one side of the incident angle adjusting sleeve 5 is compressed and the corrugated sheet on the opposite side is stretched, the angle between the axis of the light guide cover 6 and the axis of the incident angle adjusting sleeve 5 can be changed.
In order to measure the light intensity of the ultraviolet-infrared light source 2, the optical flame detector calibration and acceptance tool of the embodiment is provided with the optical sensing device 3, and the optical sensing device 3 is fixed in the optical path sleeve 4 close to the ultraviolet-infrared light source 2. After receiving the light emitted by the ultraviolet-infrared light source 2, the light sensing device 3 converts the intensity signal of the light into a voltage signal representing the intensity of the light through a sampling circuit of the light sensing device 3. The voltage signal is transmitted to a signal acquisition circuit of the control and measurement device 1, and the signal acquisition circuit is used for acquiring a light intensity feedback signal of the light source acquired by the light sensing device 3. The control and measurement device 1 further comprises a display device for displaying the magnitude of the voltage acquired by the signal acquisition circuit. According to the voltage displayed by the display device, whether the calibration and acceptance tool works normally or not can be judged. For example, when the voltage displayed by the display device is different from the input voltage by a large amount (e.g., greater than 10%), it indicates that the calibration and acceptance tool is working abnormally.
The control and measurement device 1 has an automatic adjustment system which can determine whether the light intensity of the device meets the requirements, and at the same time, the light intensity can be automatically adjusted under the condition that the light intensity does not meet the requirements. Specifically, a calibration voltage U is determined according to a required light intensity, a control and measurement device 1 is used for providing a corresponding driving current I for a violet infrared light source 2, the violet infrared light source 2 emits violet infrared light, a light sensing device 3 collects the light emitted by the violet infrared light source 2 and converts a light intensity signal into a feedback voltage U1 representing the light intensity through a sampling circuit, a signal collection circuit of the control and measurement device 1 collects the feedback voltage U1 and transmits the feedback voltage U1 to an automatic adjustment system to compare with the calibration voltage U, if U1 is matched with U, the light intensity signal is indicated to meet the requirement, and if U1 is not matched with U, the automatic adjustment system automatically adjusts the driving current I until the feedback voltage U1 is matched with the calibration voltage U.
Further, as shown in fig. 4 to 5, the light passage sleeve 4 and the incident angle adjusting sleeve 5 may be replaced with an expansion sleeve 8. The telescopic sleeve 8 includes an inner tube 81 and an outer tube 82, and a packing 83 is provided between the inner tube 81 and the outer tube 82. The violet infrared light source 2 is arranged at one end of the outer tube 82, and the light sensing device 3 is fixed in the outer tube 82 near the violet infrared light source 2. An inner tube 81 is arranged in the other end of the outer tube 82, and the inner tube 81 and the outer tube 82 can slide relatively, so that the length of the telescopic sleeve 8 can be adjusted. Further, the inner tube 81 is provided with scales, so that the telescopic sleeve 8 can be adjusted to a required length quickly and accurately. Be equipped with sealing washer 83 between inner tube 81 and the outer tube 82, sealing washer 83 can adopt rubber circle, flexible graphite ring etc. sets up sealing washer 83 and can effectively seal between inner tube 81 and the outer tube 82, simultaneously, can keep in required position after telescopic sleeve 8 stretches out and draws back to required position, avoids unexpected removal to influence the accuracy of inspection.
The other end of the inner tube 81 is connected to the angle adjusting joint 7. The first end face of the angle adjusting joint 7 is perpendicular to the axis of the angle adjusting joint 7, and the second end face and the axis form an included angle of 0-45 degrees, in this embodiment, the included angle between the second end face and the axis is 45 degrees. When angle regulation is needed, the first end face of the angle regulation joint 7 is connected with the inner pipe 81, and the second end face is connected with the light guide cover 6, so that an included angle of 45 degrees is formed between the axis of the light guide cover 6 and the axis of the telescopic sleeve 8. When the angle adjustment is not required, the inner tube 81 is directly connected to the light guide cover 6, so that the axis of the light guide cover 6 is parallel to the axis of the telescopic sleeve 8.
The optical flame detector calibration and acceptance tool of the embodiment is used for detecting the optical flame detector. The optical flame detector has a light sensitive sensor that is capable of detecting longer wavelength infrared radiation and shorter wavelength ultraviolet radiation in the flame. The calibration and acceptance tool provided by the embodiment of the invention can emit ultraviolet light and infrared light, the photosensitive sensor of the optical flame detector can convert the received optical signal into an electrical signal, and whether the optical flame detector is qualified or not is judged according to the magnitude of the electrical signal generated by the optical flame detector.
Example 2
An embodiment of the invention discloses a method for calibrating and checking an optical flame detector by using the optical flame detector calibrating and checking tool in the embodiment 1, which comprises the following steps:
s1, starting the control and measurement device 1 and calibrating the violet infrared light source 2:
after the control and measurement device 1 is started, the ultraviolet light source 2 starts to work, after the light sensing device 3 fixed in the light path sleeve 4 collects light emitted by the ultraviolet light source 2, a light signal is converted into feedback voltage U1 representing the light intensity through a sampling circuit of the light sensing device 3, the signal collecting circuit of the control and measurement device 1 collects the feedback voltage U1 and then transmits the feedback voltage U1 to an automatic regulation system of the control and measurement device 1, the automatic regulation system compares a calibration voltage U with a feedback voltage U1, and if the U is not matched with the U1, the driving current I is automatically regulated until the feedback voltage U1 is matched with the calibration voltage U.
S2, adjusting the distance from the ultraviolet infrared light source 2 to the second end part of the light guide cover 6 and calibrating the optical flame detector:
according to the requirements of the use scene of the optical flame detector and the like, the calibration length a required by the incident angle adjusting sleeve 5 or the telescopic sleeve is calculated, then the length of the incident angle adjusting sleeve 5 or the telescopic sleeve is adjusted to the calibration length a, in the adjusting process, the axis of the light guide cover 6 is parallel to the axis of the incident angle adjusting sleeve 5 or the telescopic sleeve, the optical detector to be calibrated is placed at the second end part of the light guide cover 6 after the adjustment is finished, at the moment, the photosensitive signal value output by the photosensitive sensor in the optical detector is a calibration value, the photosensitive signal value is written into software of the optical flame detector, and the calibration of the optical flame detector is finished.
S3, adjusting the distance from the ultraviolet infrared light source 2 to the second end part of the light guide cover 6 to the maximum effective length and checking and accepting the optical flame detector:
according to the requirements of using scenes and the like, the voltage value required to be generated when the photosensitive sensor of the optical flame detector is irradiated by certain light intensity is calculated and set as an effective value. Adjusting the length of the incident angle adjusting sleeve 5 or the telescopic sleeve 8 to a maximum effective length b (b is greater than a), keeping the axis of the light guide cover 6 parallel to the axis of the incident angle adjusting sleeve 5 or the telescopic sleeve 8, keeping the relative positions of the optical flame detector and the light guide cover 6 the same as those in S2, if the voltage value output by a photosensitive sensor in the optical flame detector at the moment is greater than or equal to a set effective value, judging that the optical flame detector is qualified, and entering the next acceptance flow; and if the voltage value output by the photosensitive sensor is smaller than the set effective value, judging that the optical flame detector is unqualified, and ending the acceptance process.
S4, adjusting the angle of the light guide cover 6, and checking and accepting the optical flame detector:
according to different structures, the method is divided into two adjusting methods:
the method comprises the following steps:
keeping the maximum effective length b of the telescopic sleeve 8, respectively adjusting the included angle between the light guide cover 6 and the axis of the incident angle adjusting sleeve 5 to +/-45 degrees, keeping the relative positions of the optical flame detector and the light guide cover 6 to be the same as those in S3, if the voltage value output by a photosensitive sensor in the optical flame detector is greater than or equal to the set effective value at the moment, judging that the optical flame detector is qualified, and ending the acceptance flow; and if the voltage value output by the photosensitive sensor is smaller than the set effective value, judging that the optical flame detector is unqualified, and ending the acceptance process.
The second method comprises the following steps:
keeping the maximum effective length b of the incidence angle adjusting sleeve 5, installing an angle adjusting joint 7 between the telescopic sleeve 8 and the light guide cover 6, keeping the relative positions of the optical flame detector and the light guide cover 6 to be the same as those in S3, and if the voltage value output by a photosensitive sensor in the optical flame detector is greater than or equal to the set effective value at the moment, judging that the optical flame detector is qualified, and ending the acceptance flow; and if the voltage value output by the photosensitive sensor is smaller than the set effective value, judging that the optical flame detector is unqualified, and ending the acceptance process.
In summary, according to the calibration and acceptance tool and the calibration and acceptance method for the optical flame detector provided by the embodiments of the present invention, the distance between the ultraviolet-infrared light source and the optical flame detector and the incident angle of the ultraviolet-infrared light can be controlled by adjusting the incident angle adjusting sleeve, or the distance between the ultraviolet-infrared light source and the optical flame detector and the incident angle of the ultraviolet-infrared light can be controlled by adjusting the telescopic sleeve and installing or not installing the angle adjusting joint; the control and measurement device can automatically adjust the incident light intensity, and meanwhile, the embodiment of the invention can effectively isolate background radiation and improve the consistency and efficiency of debugging and testing.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention.
Claims (10)
1. A calibration and acceptance tool for an optical flame detector is characterized by comprising an ultraviolet infrared light source (2), an optical path tube and a light guide cover (6);
the ultraviolet infrared light source (2) is installed the one end of light passage pipe, the other end of light passage pipe with the first end portion of light guide cover (6) links to each other, and the optical flame detector that detects is located the second end portion of light guide cover (6), the ultraviolet infrared light that ultraviolet infrared light source (2) sent can reach optical flame detector through light passage pipe and light guide cover (6).
2. The calibration and acceptance tool for the optical flame detector according to claim 1, wherein the light path pipe comprises a light path sleeve (4) and an incident angle adjusting sleeve (5), the ultraviolet-infrared light source (2) is mounted at one end of the light path sleeve (4), the other end of the light path sleeve (4) is connected with one end of the incident angle adjusting sleeve (5), and the other end of the incident angle adjusting sleeve (5) is connected with the first end of the light guide cover (6).
3. The calibration and acceptance tool for the optical flame detector according to claim 2, wherein the incident angle adjusting sleeve (5) is a corrugated structure, the corrugated structure is axially connected by a plurality of foldable corrugated sheets, and the variation of the length and angle of the incident angle adjusting sleeve (5) can be realized by adjusting the corrugated structure on the incident angle adjusting sleeve (5).
4. The calibration and acceptance tool of the optical flame detector according to claim 1, wherein the optical path tube comprises a telescopic sleeve (8) and an angle adjusting joint (7), one end of the telescopic sleeve (8) is connected with the ultraviolet infrared light source (2), the other end of the telescopic sleeve is connected with one end of the angle adjusting joint (7), and the other end of the angle adjusting joint (7) is connected with the first end of the light guide cover (6).
5. The tool for calibrating and checking an optical flame detector according to claim 4, characterized in that the telescopic sleeve (8) comprises an inner tube (81), an outer tube (82) and a sealing ring (83).
6. The tool for calibrating and checking an optical flame detector according to claim 3 or 5, characterized in that the light guide cover (6) is of a conical structure, and the inner diameter of the first end part of the light guide cover (6) is larger than that of the second end part.
7. The optical flame detector calibration and acceptance tool according to claim 6, further comprising a control and measurement device (1), wherein the control and measurement device (1) is capable of providing power to the violet infrared light source (2).
8. The optical flame detector calibrating and acceptance tool according to claim 7, further comprising a light sensing device (3), wherein the light sensing device (3) is arranged in the light path tube near the ultraviolet infrared light source (2).
9. A method for calibrating and checking an optical flame detector, wherein the method for calibrating and checking an optical flame detector uses the calibrating and checking tool of the optical flame detector according to claims 1-8;
the method comprises the following steps:
s1, starting the control and measurement device (1) and calibrating the purple infrared light source (2);
s2, adjusting the distance from the ultraviolet infrared light source (2) to the second end part of the light guide cover (6) and calibrating the optical flame detector;
s3, adjusting the distance from the ultraviolet infrared light source (2) to the second end part of the light guide cover (6) to the maximum effective length, and checking and accepting the optical flame detector;
and S4, adjusting the angle of the light guide cover (6), and checking and accepting the optical flame detector.
10. The method of claim 9, wherein the angle between the axis of the light guide (6) and the axis of the light path pipe is 45 ° in S4.
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| CN202010980272.8A CN112113660B (en) | 2020-09-17 | 2020-09-17 | Calibration and acceptance tool and calibration and acceptance method for optical flame detector |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102353454A (en) * | 2011-06-10 | 2012-02-15 | 北京航空航天大学 | Optical infrared radiation high-temperature calibrating device and self-calibrating method thereof |
| CN103852445A (en) * | 2014-03-19 | 2014-06-11 | 中国人民解放军装备学院 | Design method of optical probe for measuring laser absorption spectrum |
| CN107358779A (en) * | 2017-08-21 | 2017-11-17 | 北大青鸟环宇消防设备股份有限公司 | A kind of line style light beam smoke fire detector |
| CN107748011A (en) * | 2017-09-20 | 2018-03-02 | 南京航空航天大学 | The test system and method for testing of medium-wave infrared detector image-forming time delay |
| CN211206254U (en) * | 2019-09-10 | 2020-08-07 | 易沃斯(苏州)激光系统有限公司 | Laser light transmittance measuring device for plastic material |
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2020
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102353454A (en) * | 2011-06-10 | 2012-02-15 | 北京航空航天大学 | Optical infrared radiation high-temperature calibrating device and self-calibrating method thereof |
| CN103852445A (en) * | 2014-03-19 | 2014-06-11 | 中国人民解放军装备学院 | Design method of optical probe for measuring laser absorption spectrum |
| CN107358779A (en) * | 2017-08-21 | 2017-11-17 | 北大青鸟环宇消防设备股份有限公司 | A kind of line style light beam smoke fire detector |
| CN107748011A (en) * | 2017-09-20 | 2018-03-02 | 南京航空航天大学 | The test system and method for testing of medium-wave infrared detector image-forming time delay |
| CN211206254U (en) * | 2019-09-10 | 2020-08-07 | 易沃斯(苏州)激光系统有限公司 | Laser light transmittance measuring device for plastic material |
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| CN112113660B (en) | 2023-05-16 |
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