CN114353940B - Flame detection method and flame detection equipment - Google Patents
Flame detection method and flame detection equipment Download PDFInfo
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- CN114353940B CN114353940B CN202210274414.8A CN202210274414A CN114353940B CN 114353940 B CN114353940 B CN 114353940B CN 202210274414 A CN202210274414 A CN 202210274414A CN 114353940 B CN114353940 B CN 114353940B
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- 238000001514 detection method Methods 0.000 title claims abstract description 59
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- 238000005859 coupling reaction Methods 0.000 claims abstract description 33
- 238000000034 method Methods 0.000 claims description 17
- 238000012545 processing Methods 0.000 claims description 12
- 238000004590 computer program Methods 0.000 claims description 9
- 238000005286 illumination Methods 0.000 abstract description 3
- 230000000875 corresponding effect Effects 0.000 description 69
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- BNGXYYYYKUGPPF-UHFFFAOYSA-M (3-methylphenyl)methyl-triphenylphosphanium;chloride Chemical compound [Cl-].CC1=CC=CC(C[P+](C=2C=CC=CC=2)(C=2C=CC=CC=2)C=2C=CC=CC=2)=C1 BNGXYYYYKUGPPF-UHFFFAOYSA-M 0.000 description 2
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- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 2
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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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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23M—CASINGS, LININGS, WALLS OR DOORS SPECIALLY ADAPTED FOR COMBUSTION CHAMBERS, e.g. FIREBRIDGES; DEVICES FOR DEFLECTING AIR, FLAMES OR COMBUSTION PRODUCTS IN COMBUSTION CHAMBERS; SAFETY ARRANGEMENTS SPECIALLY ADAPTED FOR COMBUSTION APPARATUS; DETAILS OF COMBUSTION CHAMBERS, NOT OTHERWISE PROVIDED FOR
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- F23M11/04—Means for supervising combustion, e.g. windows
- F23M11/045—Means for supervising combustion, e.g. windows by observing the flame
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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
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Abstract
The application provides a flame detection method and flame detection equipment, and the equipment comprises: the UV flame detector comprises a UV flame detector, a controller, a closed-loop positioning disc, a motor and an optical coupler sensor, wherein the closed-loop positioning disc comprises a plurality of fan-shaped areas, each fan-shaped area is provided with a skylight type shutter indicating different directions, an azimuth pointing hole corresponding to the skylight type shutter and an azimuth resetting hole, each skylight type shutter is provided with windows in different directions, the motor is used for driving the closed-loop positioning disc to rotate, so that the skylight type shutters on the closed-loop positioning disc pass through the upper part of the UV flame detector, the optical coupler sensor is arranged at the azimuth pointing hole, the controller acquires a time sequence signal generated by ultraviolet irradiation received by the optical coupler sensor within preset duration, and determines the direction of flame according to the time sequence signal. The technical scheme is characterized in that intermittent illumination of the optical coupling sensor is utilized, and the optical signal is converted into the electric signal, so that the source direction of the flame is more accurately positioned.
Description
Technical Field
The application relates to the technical field of detection, in particular to a flame detection method and flame detection equipment.
Background
The principle of operation of the UV flame detector is to use a solid material as a sensing element, such as silicon carbide or aluminum nitrate, or a gas filled tube as a sensing element, such as a geiger-miller tube, to sense ultraviolet radiation generated by the flame at a wavelength of 0.185-0.260 microns.
Specifically, a glass container of the UV flame detector is filled with high-pressure mixed gas, an emitter and a receiver are fixed in the glass container, a certain interval is reserved between the two electrodes, when a UV signal (ultraviolet signal) is received, the emitter and the receiver are conducted to generate a pulse wave signal, a frequency meter is used for counting the frequency and time of the pulse wave signal, and when the preset threshold value is exceeded, the occurrence of flame burning is considered.
However, the above method cannot determine the direction of the flame source, and therefore, how to determine the direction of the flame source is an urgent technical problem to be solved.
Disclosure of Invention
The embodiment of the application provides a flame detection method and flame detection equipment, which are used for solving the problem that a user cannot determine the direction of flame sources.
In a first aspect, an embodiment of the present application provides a flame detection device, which includes a UV flame detector, a controller, a closed-loop positioning disc, a motor, and an opto-coupler sensor;
the closed-loop positioning disc comprises a plurality of first fan-shaped areas and a second fan-shaped area where an azimuth reset hole is located, each first fan-shaped area is provided with a skylight type shutter indicating different directions and an azimuth direction hole corresponding to the skylight type shutter, and each skylight type shutter is provided with windows in different directions;
any skylight type shutter of the closed-loop positioning disc is arranged above the UV flame detector, and the motor is used for driving the closed-loop positioning disc to rotate so that each skylight type shutter on the closed-loop positioning disc passes through the upper part of the UV flame detector;
the optical coupling sensor is arranged at the azimuth indicating hole and used for receiving ultraviolet rays passing through the azimuth indicating hole and the azimuth resetting hole corresponding to the skylight type shutter when an ignition source emits the ultraviolet rays;
the controller obtains a time sequence signal generated by the fact that the optical coupling sensor receives the ultraviolet irradiation within a preset time period, and determines the direction of the flame according to the time sequence signal.
In a possible design of the first aspect, the closed-loop positioning disc is a disc, a gear is arranged on an outer ring of the closed-loop positioning disc, and a gear is arranged on a rotating shaft of the motor;
the controller controls the motor to rotate according to a preset rotating speed for a preset time, and a gear of the motor drives a gear of the closed-loop positioning disc to rotate.
In another possible design of the first aspect, a rotating shaft of the motor is connected with a preset position on the closed-loop positioning disc;
the controller controls the motor to rotate according to a preset rotating speed for a preset time, and the rotating shaft of the motor drives the closed-loop positioning disc to rotate.
Optionally, the windows in different directions on the skylight type shutter include: the window comprises an upper window, a lower window, a left window, a right window, a middle window, a left lower window, a left upper window, a right lower window and a right upper window.
In a second aspect, the present embodiments provide a flame detection method, which is applied to the flame detection apparatus in the first aspect and in various possible designs, and the method includes:
acquiring a time sequence signal generated by the optical coupling sensor receiving the irradiation of ultraviolet rays emitted by flame within a preset time period;
and determining the direction of the flame according to the time sequence signal.
In one possible design of the second aspect, before the determining the direction of the flame from the timing signal, the method further includes:
and controlling a motor to drive a closed-loop positioning disc to rotate according to a preset rotating speed for the preset time.
In another possible design of the second aspect, the timing signal carries a first time when the ultraviolet ray passes through the azimuth resetting hole and a second time when the ultraviolet ray passes through an azimuth pointing hole corresponding to the skylight type shutter within the preset time;
correspondingly, the determining the direction of the flame according to the time sequence signal comprises:
determining a target time difference according to the second moment and the first moment;
and determining the direction of the flame according to the target time difference and a preset time azimuth table, wherein time differences corresponding to different azimuths are recorded in the time azimuth table.
In a third aspect, embodiments of the present application provide a flame detection device, including:
the acquisition module is used for acquiring a time sequence signal generated by the optical coupling sensor receiving the irradiation of the ultraviolet rays emitted by the flame within a preset time length;
and the processing module is used for determining the direction of the flame according to the time sequence signal.
In a possible design of the third aspect, the processing module is further configured to control the motor to drive the closed-loop positioning disk to rotate at the preset rotation speed for the preset time.
In another possible design of the third aspect, the timing signal carries a first time when the ultraviolet ray passes through the azimuth resetting hole and a second time when the ultraviolet ray passes through an azimuth pointing hole corresponding to the skylight type shutter within the preset time period;
correspondingly, the processing module determines the direction of the flame according to the time sequence signal, and is specifically configured to:
determining a target time difference according to the second moment and the first moment;
and determining the direction of the flame according to the target time difference and a preset time azimuth table, wherein time differences corresponding to different azimuths are recorded in the time azimuth table.
In a fourth aspect, an embodiment of the present application provides a control apparatus, including: a processor, a memory;
the memory stores computer-executable instructions;
the processor executes the computer-executable instructions to cause the control apparatus to perform the flame detection method as described in the second aspect and various possible designs above.
In a fifth aspect, embodiments of the present application provide a computer-readable storage medium having stored therein computer-executable instructions for implementing the flame detection method as described in the second aspect and various possible designs described above when executed by a processor.
In a sixth aspect, embodiments of the present application provide a computer program product comprising a computer program which, when executed by a processor, is configured to implement a flame detection method as described in the second aspect and various possible designs.
The embodiment of the application provides a flame detection method and a flame detection device, and the device comprises: the closed-loop positioning disc comprises a plurality of fan-shaped areas, each fan-shaped area is provided with a skylight type shutter indicating different directions, an orientation pointing hole corresponding to the skylight type shutter and an orientation resetting hole, each skylight type shutter is provided with windows in different orientations, any skylight type shutter of the closed-loop positioning disc is arranged above the UV flame detector, the motor is used for driving the closed-loop positioning disc to rotate, the skylight type shutter on the closed-loop positioning disc passes through the upper part of the UV flame detector, the optical coupling sensor is arranged at the orientation pointing hole and used for receiving ultraviolet rays passing through the orientation pointing hole and the orientation resetting hole corresponding to the skylight type shutter when an ignition source emits the ultraviolet rays, and the controller obtains a time sequence signal generated by irradiation of the ultraviolet rays received by the optical coupling sensor in a preset time length, and determining the direction of the flame according to the time sequence signal. The technical scheme is characterized in that intermittent illumination of the optical coupling sensor is utilized, and the optical signal is converted into the electric signal, so that the source direction of the flame is more accurately positioned.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.
FIG. 1 is a schematic structural diagram of a UV flame detector provided in an embodiment of the present application;
FIG. 2 is a first schematic structural diagram of a flame detection device according to an embodiment of the present disclosure;
FIG. 3 is a schematic structural diagram II of a flame detection device according to an embodiment of the present disclosure;
FIG. 4 is a schematic structural diagram III of a flame detection device provided in the embodiments of the present application;
FIG. 5 is a first flowchart illustrating a flame detection method according to an embodiment of the present disclosure;
FIG. 6 is an example of timing signals provided by embodiments of the present application;
FIG. 7 is another example of timing signals provided by embodiments of the present application;
FIG. 8 is a second schematic flowchart of a flame detection method according to an embodiment of the present disclosure;
FIG. 9 is a schematic structural diagram of a flame detection device according to an embodiment of the present disclosure;
fig. 10 is a schematic structural diagram of a control device according to an embodiment of the present application.
Specific embodiments of the present disclosure have been shown by way of example in the drawings and will be described in more detail below. These drawings and written description are not intended to limit the scope of the disclosed concepts in any way, but rather to illustrate the concepts of the disclosure to those skilled in the art by reference to specific embodiments.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.
Before introducing the embodiments of the present application, the background of the present application is explained first:
the principle of operation of the UV flame detector is to use a solid material as a sensing element, such as silicon carbide or aluminum nitrate, or a gas filled tube as a sensing element, such as a geiger-miller tube, to sense ultraviolet radiation generated by the flame at a wavelength of 0.185-0.260 microns.
By way of example, fig. 1 is a schematic structural diagram of a UV flame detector provided in an embodiment of the present application. As shown in fig. 1, the UV flame detector comprises: a receiving electrode 11, an emitting electrode 12 and a glass container 13.
Wherein, the glass container 13 is filled with high-pressure mixed gas, the emitter 12 and the receiver 11 are fixed in the glass container 13, and a certain interval is arranged between the emitter 12 and the receiver 11.
In one possible implementation, when the receiver 11 receives a UV signal (ultraviolet light generated by flame combustion), the emitter 12 and the receiver 11 are conducted to generate a pulse wave signal. At this time, the frequency and time of the pulse wave signal are counted by using a frequency meter, and if the frequency exceeds a preset threshold, it is considered that flame combustion has occurred.
However, the UV flame detector has disadvantages in that: the receiving angle of the glass container 13 does not have a certain directivity, and as can be seen from the shapes of the receiving stage 11 and the cover of the glass container 13, as long as the conical range of 180 degrees in front can receive the sensed UV signal, the direction of the signal, that is, the direction of the ignition source, cannot be determined.
In order to solve the technical problems, the technical conception process of the inventor is as follows: in the prior art, the UV flame detector cannot sense the direction of the ignition source, and if windows in different directions can be arranged above the UV flame detector, the direction corresponding to the window can be obtained by acquiring the window from which ultraviolet rays emitted by the ignition source are transmitted in a certain mode, and the direction of the ignition source is further determined. The following embodiments specifically describe the specific implementation manner of collecting the window from which the ultraviolet rays emitted from the ignition source are transmitted.
The technical solution of the present application will be described in detail by specific examples. It should be noted that the following specific embodiments may be combined with each other, and the same or similar concepts or processes may not be described in detail in some embodiments. The embodiments provided in the present application will be described below with reference to the accompanying drawings.
Fig. 2 is a first structural schematic diagram of a flame detection device according to an embodiment of the present application. As shown in fig. 2, the flame detection apparatus includes: UV flame detector 21, controller 23, closed loop positioning disc 24, motor 25 and opto-coupler sensor 26.
The closed-loop positioning plate 24 includes a plurality of first sector areas and a second sector area where the azimuth reset hole is located, each first sector area is provided with a skylight type shutter 22 indicating different directions and an azimuth pointing hole corresponding to the skylight type shutter 22, and each skylight type shutter is provided with a window in different directions.
Alternatively, the closed-loop positioning plate 24 may be divided into a plurality of sector areas in a sector manner, wherein an azimuth reset hole is provided in one sector area (second sector area) for ultraviolet rays emitted from any direction to the UV flame detector 21 by the ignition source as a hole corresponding to the first time in the following method embodiment; the skylight type shutters indicating different directions are arranged in other fan-shaped areas (a plurality of first fan-shaped areas), windows with different directions are arranged on one skylight type shutter 22, when a fire happens at a time, the skylight type shutter 22 only penetrates through the window with the corresponding direction on the skylight type shutter 22 from the direction of the fire source, and in addition, a direction pointing hole corresponding to the skylight type shutter 22 is arranged on the first fan-shaped area close to the center of the closed-loop positioning disc 24 and used for ultraviolet rays emitted by the fire source with the corresponding direction.
In one possible implementation, the differently oriented windows on the shuttered shutter 22 include: an upper window, a lower window, a left window, a right window and a middle window.
In another possible implementation, the differently oriented windows on the shuttered shutter 22 as in FIG. 2 include: an upper window A, a lower window B, a left window C, a right window D, a middle window E, a left lower window F, a left upper window G, a right lower window H and a right upper window I.
It should be understood that the number of the skylight shutters 22 corresponds to the number of the first sector areas, and corresponds to the number of the preset orientations.
Optionally, any skylight type shutter of the closed-loop positioning disc 24 is arranged above the UV flame detector 21, and the motor 25 is used for driving the closed-loop positioning disc 24 to rotate, so that each skylight type shutter on the closed-loop positioning disc 24 passes through the upper side of the UV flame detector 21.
Optionally, the optical coupling sensor 26 is disposed at the azimuth indicating hole, and is configured to receive ultraviolet rays passing through the azimuth indicating hole and the azimuth resetting hole corresponding to the skylight shutter 22 when the ignition source emits ultraviolet rays.
In one possible implementation, when the motor 25 rotates the closed-loop positioning plate 24, the ignition source in the a direction emits ultraviolet rays to irradiate a sector area of the closed-loop positioning plate 24 above the UV flame detector 21. As the closed-loop puck 24 rotates, the ultraviolet light may pass through the azimuth reset aperture, the (up) azimuth aperture (and in this case also the a-window of the skylight shutter 22).
Further, as the closed-loop positioning plate 24 rotates, the optical coupler sensor 26 may receive the ultraviolet light passing through the azimuth resetting hole and the (upper) azimuth pointing hole according to a time sequence, and convert the ultraviolet light into an electrical signal in real time, i.e., a time sequence signal.
The time period for the motor 25 to rotate the closed-loop positioning disc 24 may be a preset time period.
It should be understood that the number (i.e. the number of the first sectors), the position, etc. of the windows in different directions on the skylight shutter 22 may be set according to actual requirements, and each window may capture the ultraviolet light emitted from different angle ranges in the conical range of 180 degrees in front of the skylight shutter 22.
Optionally, the controller 23 obtains a timing signal generated by the optical coupling sensor 26 receiving the ultraviolet radiation within a preset time period, and determines the flame direction according to the timing signal.
In a possible implementation, within a preset time period, along with the rotation of the closed-loop positioning disc 24, when ultraviolet rays received by the optical coupling sensor 26 rotate for any one cycle of the closed-loop positioning disc 24, the ultraviolet rays consist of two parts, and firstly, ultraviolet rays in the direction M pass through the azimuth reset hole and irradiate on the optical coupling sensor 26; secondly, ultraviolet rays in the direction M pass through the azimuth pointing hole M corresponding to the skylight type shutter 22 and irradiate on the optical coupler sensor 26.
Where M is the direction of origin of the ignition source during a single fire, for example, up, down, left, right, middle, left-down, left-up, right-down, or right-up in a cone 180 degrees forward of the UV flame detector 21.
Namely: the azimuthally oriented holes (holes oriented as above) can only pass the ultraviolet rays of the ignition source in the upper direction within the conical range 180 degrees in front of the UV flame detector 21; the position reset hole can pass the ultraviolet ray of the ignition source in arbitrary position in the conical range of the preceding 180 degrees of UV flame detector 21, and during the design, position reset hole length can be greater than the directional hole in position, and the time length of the ultraviolet ray of receiving is longer (i.e. the light irradiation time that opto-coupler sensor 26 received is longer), can regard as the initial timing point of closed loop positioning disk 24 when the location.
It should be understood that, during a preset time period, as time goes by, the closed-loop positioning plate 24 rotates any circle, the reset hole on the closed-loop positioning plate 24 and the corresponding holes of each window pass through the UV flame detector 21 in sequence, so that in actual implementation, the time sequence signals of the optical coupling sensor 26 are shown in fig. 6 and 7 as follows.
In one possible implementation, the closed-loop positioning plate 24 rotates any one revolution for a preset duration, and the uv light irradiates the upper window a and passes through the azimuth reset hole and the hole corresponding to the window a in time sequence, forming a time sequence signal with time as the horizontal axis, as shown in fig. 7.
Alternatively, the louvered shutters 22 may be a plurality of windows that are independently directed in different directions, with the closed-loop puck 24 rotating to correspond to the different louvered shutters in the closed-loop puck 24.
In summary, the principle of the flame detection device according to the embodiment of the present application will be described in detail:
firstly, ultraviolet rays emitted by an ignition source can irradiate on the UV flame detector 21 at a fixed position, but because the closed-loop positioning disc 24 is arranged between the ignition source and the UV flame detector 21, the ultraviolet rays are blocked, at the moment, the ultraviolet rays can pass through a window on the skylight type shutter 22 and irradiate on the UV flame detector 21, the fixed position is positioned below the skylight type shutter 22 in any fan-shaped area, and different first fan-shaped areas in the closed-loop positioning disc 24 are respectively and sequentially provided with different direction pointing holes.
At this time, taking the ignition source in the above direction (a) as an example, as the motor 25 drives the closed-loop positioning plate 24 to rotate along the center of the closed-loop positioning plate 24, in the rotating process, when the second sector region (i.e., the direction reset hole) rotates to the position above the UV flame detector 21, the light of the ultraviolet ray may be detected by the optical coupling sensor 26 (a first time sequence signal is generated, the time length of the time sequence signal is long), and the light irradiates the UV flame detector 21; as the closed-loop puck 24 continues to rotate, the ultraviolet light may impinge on different first sector areas in turn, but may only pass through the first sector area in which the upper window is located, i.e., the ultraviolet light impinges on the UV flame detector 21 through the upper window and is detected by the opto-coupler sensor 26 through the azimuth aperture a (generating a second timing signal, which is shorter in duration).
In the period of rotation, the controller calculates the generated time difference after receiving the generated second time sequence signal and the first time sequence signal, namely, the controller can judge the first sector areas behind the second sector areas irradiated by the ultraviolet light, and further obtain the direction of the ignition source.
The embodiment of the application provides a flame detection method and a flame detection device, and the device comprises: the closed-loop positioning disc comprises a plurality of fan-shaped areas, each fan-shaped area is provided with a skylight type shutter indicating different directions, an orientation pointing hole corresponding to the skylight type shutter and an orientation resetting hole, each skylight type shutter is provided with windows in different orientations, any skylight type shutter of the closed-loop positioning disc is arranged above the UV flame detector, the motor is used for driving the closed-loop positioning disc to rotate, the skylight type shutter on the closed-loop positioning disc passes through the upper part of the UV flame detector, the optical coupling sensor is arranged at the orientation pointing hole and used for receiving ultraviolet rays passing through the orientation pointing hole and the orientation resetting hole corresponding to the skylight type shutter when an ignition source emits the ultraviolet rays, and the controller obtains a time sequence signal generated by irradiation of the ultraviolet rays received by the optical coupling sensor in a preset time length, and determining the direction of the flame according to the time sequence signal. The technical scheme is characterized in that intermittent illumination of the optical coupling sensor is utilized, and the optical signal is converted into the electric signal, so that the source direction of the flame is more accurately positioned.
Based on the above method embodiments, fig. 3 and 4 are diagrams illustrating connection between the motor 25 and the closed-loop positioning disk 24 according to the embodiment of the present application. It should be understood that in a particular implementation, one of the implementation methods of fig. 3 and 4 is selected.
Optionally, fig. 3 is a schematic structural diagram ii of the flame detection device provided in the embodiment of the present application. As shown in fig. 3, the closed-loop positioning plate 24 is a disk-shaped, a gear is provided on an outer ring of the closed-loop positioning plate 24, and a gear is provided on a rotating shaft of the motor 25.
The controller 23 controls the motor 25 to rotate for a preset time according to a preset rotating speed, and the gear of the motor 25 drives the gear of the closed-loop positioning disc 24 to rotate.
In a possible implementation, the controller 23 controls the motor 25 to drive the closed-loop positioning disc 24 to rotate for 1min at a speed of 500r/min, and at this time, the timing signal of the optical coupling sensor 26 may be the light receiving condition of the optical coupling sensor 26 within 1 min.
The magnitude relation between the rotating speed of the closed-loop positioning disc 24 and the rotating speed of the motor 25 is positively correlated with the number of gears of the closed-loop positioning disc 24 and the motor 25.
Optionally, fig. 4 is a schematic structural diagram three of the flame detection device provided in the embodiment of the present application. As shown in fig. 4, the rotating shaft of the motor 25 is connected with a preset position on the closed-loop positioning plate 24;
the controller 23 controls the motor 25 to rotate for a preset time according to a preset rotating speed, and the rotating shaft of the motor 25 drives the closed-loop positioning disc 24 to rotate.
Wherein the rotational speed of the closed-loop positioning disc 24 is equal to the rotational speed of the motor 25.
According to the flame detection device provided by the embodiment of the application, a closed-loop positioning disc is disc-shaped, a gear is arranged on the outer ring of the closed-loop positioning disc, a gear is arranged on a rotating shaft of a motor, a controller controls the motor to rotate for a preset time according to a preset rotating speed, and the gear of the motor drives the gear of the closed-loop positioning disc to rotate; or the rotating shaft of the motor is connected with a preset position on the closed-loop positioning disc, the controller controls the motor to rotate for a preset time according to the preset rotating speed, and the rotating shaft of the motor drives the closed-loop positioning disc to rotate. In the technical scheme, the determination of the positioning of the source direction of the flame is ensured from the connection relation between the motor and the closed-loop positioning disc.
On the basis of the above device embodiment, fig. 5 is a schematic flowchart of a first flow of a flame detection method provided in the embodiment of the present application, and as shown in fig. 5, the flame detection method is applied to the above flame detection device, and the flame detection method includes:
and 51, acquiring a time sequence signal generated by the optical coupling sensor receiving the ultraviolet radiation emitted by the flame within a preset time period.
In this scheme, this scheme is applied to foretell flame check out test set to realize judging the position of the ignition source, specific control mode is as follows:
before this step 51, the controller controls the motor to rotate the closed-loop positioning disc at the preset rotation speed for a preset duration.
Optionally, when there is an ignition source, ultraviolet rays generated by the flame irradiate the UV flame detector through a window in a certain direction of the skylight shutter 22, and at this time, the closed-loop positioning plate is controlled to rotate at a preset rotation speed, so that the ultraviolet rays can pass through the direction reset hole in the closed-loop positioning plate within a preset time length, the ultraviolet rays generated by the flame irradiate the window in the corresponding direction on the skylight shutter and the direction pointing hole in the first sector area where the skylight shutter is located.
The preset time duration, namely the time duration that the motor drives the closed-loop positioning disc to rotate according to the preset rotating speed, should exceed the time duration that the closed-loop positioning disc rotates for one circle.
Preferably, after ultraviolet ray passed the position reset hole for the first time, can pass the position reset hole for the second time, for closed loop positioning disk rotation a week.
To enable more accurate measurement, the preset duration of the actual rotation may be greater than the duration of one rotation.
For example, the preset time period is 3s, 1min, 5min, etc., and the following example illustrates the embodiment of the present application by taking 1min as an example.
Illustratively, fig. 6 is an example of a timing signal provided in an embodiment of the present application. As shown in fig. 6, it is a schematic diagram of a time sequence signal of the ultraviolet ray passing through the photo-coupler sensor in the direction hole corresponding to the orientation directional hole and the start timing hole.
In a possible implementation, taking two devices, namely an optical coupler sensor and a closed-loop positioning plate as an example, it is assumed that all the azimuth pointing holes and the azimuth resetting holes on the closed-loop positioning plate can transmit ultraviolet rays emitted by the ignition source.
Within 1min, taking the example that the optical coupling sensor converts the optical signal into the electrical signal, for example, 5V, as shown in fig. 6, as the time T increases, the closed-loop positioning disc rotates, the signal of each hole is 5V, and the process is repeated.
That is, the arrangement of the holes on the closed-loop puck is according to: the azimuth reset azimuth pointing hole, the azimuth pointing hole corresponding to the upper window A, the azimuth pointing hole corresponding to the lower window B, the azimuth pointing hole corresponding to the left window C, the azimuth pointing hole corresponding to the right window D, the azimuth pointing hole corresponding to the middle window E, the azimuth pointing hole corresponding to the left lower window F, the azimuth pointing hole corresponding to the left upper window G, the azimuth pointing hole corresponding to the right lower window H and the azimuth pointing hole corresponding to the right upper window I are sequentially arranged.
Specifically, 1s-3s, an azimuth reset hole; 4s-5s, the direction corresponding to the upper window A points to the hole; 6s-7s, the corresponding direction of the lower window B points to the hole; 8s-9s, the direction corresponding to the left window C points to the hole; 10s-11s, and the direction corresponding to the right window D points to the hole; 12s-13s, the middle window E points to the hole in the corresponding direction; 14s-15s, the corresponding direction of the lower left window F points to the hole; 16s-17s, and the direction corresponding to the upper left window G points to the hole; 18s-19s, and the direction corresponding to the lower right window H points to the hole; 20s-21s, an azimuth pointing hole corresponding to the upper right window I, 22s-24s and an azimuth resetting hole; 25s-26s, the corresponding orientation of the upper window a is continuously cycled towards the opening … ….
Further, in practical application to the flame detection device, when a fire is fired at one position, the direction of the corresponding ignition source is certain, ultraviolet rays in the ignition source only pass through one window of the skylight type shutter, and correspondingly, the direction passing through the first sector area where the skylight type shutter is located is directed to the hole.
Illustratively, fig. 7 is another example of the timing signals provided by the embodiments of the present application. As shown in fig. 7, in the flame detection device, within 1min, taking the optical coupling sensor to convert the optical signal into the electrical signal, for example, 5V, as time T increases, the closed-loop positioning disc rotates, and the signal irradiated on the optical coupling sensor through the hole is 5V, which is repeated.
Specifically, as one implementation, the ultraviolet rays pass through the upper window A for example, 1s-3s, and the azimuth reset hole; 4s-5s, the direction corresponding to the upper window A points to the hole; 22s-24s, azimuth reset holes; 25s-26s, the corresponding orientation of the upper window a is continuously cycled towards the opening … ….
Specifically, as another implementation, the ultraviolet rays pass through the upper window B for example, 1s-3s, and the azimuth reset hole; 5s-6s, the upper window B points to the hole in the corresponding direction; 22s-24s, azimuth reset holes; 26s-27s, the corresponding orientation of the upper window B to the directional hole … … is continuously cycled.
Specifically, as another implementation, take the ultraviolet ray passing through the upper window C as an example, 2s-4s, the azimuth reset hole; 6s-7s, the direction corresponding to the upper window C points to the hole; 23s-25s, azimuth reset holes; 27s-28s, the corresponding orientation of the upper window C is directed to the opening … …, with the cycle continuing.
And step 52, determining the direction of the flame according to the time sequence signal.
In this step, after the controller obtains a time sequence signal generated by the opto-coupler sensor receiving the ultraviolet radiation emitted by the flame within a preset time period, the direction of the flame, that is, the direction of the ignition source is obtained according to the distribution rule of the time sequence signal.
For example, when a first time when the ultraviolet light passes through the azimuth reset hole and a second time when the ultraviolet light passes through the azimuth pointing hole corresponding to the skylight type shutter in the time sequence signal are collected, the azimuth pointing hole corresponding to the skylight type shutter through which the ultraviolet light passes can be judged according to the size of the interval between the first time and the second time.
According to the flame detection method provided by the embodiment of the application, the time sequence signal generated by the fact that the optical coupling sensor receives ultraviolet radiation emitted by flame within the preset time length is obtained, and the direction of the flame is determined according to the time sequence signal. The source direction of the flame can be more accurately positioned.
On the basis of the foregoing embodiment, fig. 8 is a schematic flow chart of a flame detection method according to an embodiment of the present application, and as shown in fig. 8, when a first time when the ultraviolet ray passes through the azimuth resetting hole and a second time when the ultraviolet ray passes through the azimuth pointing hole corresponding to the skylight shutter in a preset time period are carried in the timing signal, the foregoing step 52 may be implemented by the following steps:
and 81, determining a target time difference according to the second moment and the first moment.
In the step, according to a first moment when the ultraviolet light passes through the azimuth resetting hole and a second moment when the ultraviolet light passes through the azimuth pointing hole corresponding to the skylight type shutter, a time difference between the second moment and the first moment, namely a target time difference, is calculated.
In one possible implementation, the closed-loop positioning plate rotates for one circle (after ultraviolet rays pass through the azimuth reset hole for the first time, the time for the optical coupling sensor to receive light is determined when the ultraviolet rays pass through the azimuth reset hole for the second time), and the time for the optical coupling sensor to receive light, namely the time for the ultraviolet rays to leave after passing through the azimuth reset hole for the first time, is recorded as a first moment; and after the ultraviolet light passes through the azimuth reset hole for the first time, the optical coupling sensor receives light again, and the time when the light receiving is finished, namely the time when the ultraviolet light leaves after passing through the azimuth pointing hole corresponding to the skylight type shutter, is recorded as a second moment.
Specifically, as an implementation, in the time series signal, there is an electric signal corresponding to the signal 12V at 1s-3s, 4s-5s … … 22s-24s, and 25s-26s, and the target time difference is calculated to be 5s-3s =2 s.
That is, 1s-3s and 22s-24s are the timing for the first and second passes through the azimuth reset hole.
Specifically, as another implementation, in the time series signal, there are electric signals corresponding to the signal 12V at 11s-13s, 16s-17s … … 32s-34s, and 37s-38s, and the target time difference is calculated to be 17s-13s =4 s.
That is, 11s-13s and 32s-34s are the timing for the first and second passes through the azimuth reset holes.
It should be understood that in order to facilitate the controller to distinguish the directional hole in the position that the position reset hole corresponds with the skylight formula shutter, the size of position reset hole is different with the directional hole in the position that the skylight formula shutter corresponds, also is that the ultraviolet irradiation that passes the hole stays the time difference on the opto-coupler sensor.
I.e., the azimuth reset hole may serve as a hole for timing initiation.
And 82, determining the direction of the flame according to the target time difference and a preset time azimuth table.
Wherein, the time azimuth table records the time difference corresponding to different azimuths.
In this step, the time difference described in the time direction table is a time difference between the hole of each direction and the direction reset hole when the closed-loop positioning plate rotates at the preset rotation speed.
In one possible implementation, the 2s corresponding orientation is the upper window a; 4s is the lower window B; the position corresponding to 6s is a left window C; the direction corresponding to 8s is a right window D; the position corresponding to 10s is a middle window E; 12s is the lower left window F; the 14s corresponding orientation is the upper left window G; 16s for the lower right window H and 18s for the upper right window I.
Specifically, as one implementation, when there is an electrical signal corresponding to the signal 12V in 1s-3s, 4s-5s … … 22s-24s, 25s-26s in the time series signal, the target time difference is calculated to be 5s-3s =2 s.
Then, the orientation corresponding to 2s is the upper window a, i.e. the orientation of the ignition source is the upper direction.
Specifically, as another implementation, in the time series signal, when there is an electric signal corresponding to the signal 12V in 11s-13s, 16s-17s … … 32s-34s, and 37s-38s, the target time difference is calculated to be 17s-13s =4 s.
Then, the orientation corresponding to 4s is the lower window B, i.e. the orientation of the ignition source is the lower direction.
According to the flame detection method provided by the embodiment of the application, the target time difference is determined according to the second moment and the first moment, and then the direction of the flame is determined according to the target time difference and the preset time azimuth table.
On the basis of the above method embodiment, fig. 9 is a schematic structural diagram of a flame detection device provided in an embodiment of the present application, and as shown in fig. 9, the flame detection device is applied to the above controller 23, that is, the control device according to the following embodiments, and the flame detection device includes:
the acquisition module 91 is used for acquiring a time sequence signal generated by the optical coupling sensor receiving the irradiation of the ultraviolet rays emitted by the flame within a preset time period;
and the processing module 92 is used for determining the direction of the flame according to the time sequence signal.
In a possible design of the embodiment of the present application, the processing module 92 is further configured to control the motor to drive the closed-loop positioning disc to rotate at a preset rotation speed for a preset duration.
In another possible design of the embodiment of the application, the time sequence signal carries a first time when the ultraviolet ray passes through the azimuth reset hole within a preset time length and a second time when the ultraviolet ray passes through the azimuth directional hole corresponding to the skylight type shutter;
correspondingly, the processing module 92 determines the direction of the flame according to the timing signal, specifically for:
determining a target time difference according to the second moment and the first moment;
and determining the direction of the flame according to the target time difference and a preset time azimuth table, wherein time differences corresponding to different azimuths are recorded in the time azimuth table.
The flame detection device provided by the embodiment of the application can be used for executing the technical scheme corresponding to the flame detection method in the embodiment, the realization principle and the technical effect are similar, and the description is omitted.
It should be noted that the division of the modules of the above apparatus is only a logical division, and the actual implementation may be wholly or partially integrated into one physical entity, or may be physically separated. And these modules can be realized in the form of software called by processing element; or can be implemented in the form of hardware; and part of the modules can be realized in the form of calling software by the processing element, and part of the modules can be realized in the form of hardware. In addition, all or part of the modules can be integrated together or can be independently realized. The processing element described herein may be an integrated circuit having signal processing capabilities. In implementation, each step of the above method or each module above may be implemented by an integrated logic circuit of hardware in a processor element or an instruction in the form of software.
Fig. 10 is a schematic structural diagram of a control device according to an embodiment of the present application. As shown in fig. 10, the control apparatus may include: a processor 100, a memory 101, and computer program instructions stored on the memory 101 and operable on the processor 100.
Wherein the control device may be the controller 23.
Processor 100 executes computer-executable instructions stored by memory 101 to cause processor 100 to perform aspects of the embodiments described above. The processor 100 may be a general-purpose processor including a central processing unit CPU, a Network Processor (NP), and the like; but also a digital signal processor DSP, an application specific integrated circuit ASIC, a field programmable gate array FPGA or other programmable logic device, discrete gate or transistor logic, discrete hardware components.
Optionally, the control device may further include: a transceiver 102.
Memory 101 and transceiver 102 are coupled to processor 100 via a system bus and communicate with each other, and memory 101 is used to store computer program instructions.
The transceiver 102 is used to communicate with other devices, and the transceiver 102 constitutes a communication interface.
Optionally, in terms of hardware implementation, the obtaining module 91 in the embodiment shown in fig. 9 corresponds to the transceiver 102 in this embodiment.
The system bus may be a Peripheral Component Interconnect (PCI) bus, an Extended Industry Standard Architecture (EISA) bus, or the like. The system bus may be divided into an address bus, a data bus, a control bus, and the like. For ease of illustration, only one thick line is shown, but this does not mean that there is only one bus or one type of bus.
The control device provided by the embodiment of the application can be used for executing the technical scheme corresponding to the flame detection method in the embodiment, the implementation principle and the technical effect are similar, and the description is omitted here.
The embodiment of the application also provides a chip of the operation instruction, and the chip is used for executing the technical scheme of the flame detection method in the embodiment.
The embodiment of the present application further provides a computer-readable storage medium, where computer instructions are stored in the computer-readable storage medium, and when the computer instructions are run on a computer device, the computer device is caused to execute the technical solution of the flame detection method in the foregoing embodiment.
The embodiment of the present application further provides a computer program product, which includes a computer program, and the computer program is used for executing the technical solution of the flame detection method in the foregoing embodiment when executed by a processor.
The computer-readable storage medium described above may be implemented by any type of volatile or non-volatile memory device or combination thereof, such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic or optical disk. Readable storage media can be any available media that can be accessed by a general purpose or special purpose computer device.
It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.
Claims (10)
1. A flame detection apparatus, comprising: the device comprises a UV flame detector, a controller, a closed-loop positioning disc, a motor and an optical coupling sensor;
the closed-loop positioning disc comprises a plurality of first fan-shaped areas and a second fan-shaped area where an azimuth reset hole is located, each first fan-shaped area is provided with a skylight type shutter indicating different directions and an azimuth pointing hole corresponding to the skylight type shutter, each skylight type shutter is provided with windows in different azimuths, and the window azimuth of the skylight type shutter in each first fan-shaped area is the same as the azimuth pointing hole;
any skylight type shutter of the closed-loop positioning disc is arranged above the UV flame detector, and the motor is used for driving the closed-loop positioning disc to rotate so that each skylight type shutter on the closed-loop positioning disc passes through the upper part of the UV flame detector;
the optical coupling sensor is arranged at the azimuth indicating hole and used for receiving ultraviolet rays passing through the azimuth indicating hole and the azimuth resetting hole corresponding to the skylight type shutter when an ignition source emits the ultraviolet rays;
the controller obtains a time sequence signal generated by the fact that the optical coupling sensor receives the ultraviolet irradiation within a preset time period, and determines the direction of the flame according to the time sequence signal.
2. The apparatus of claim 1, wherein the closed-loop positioning plate is a disk shape, an outer ring of the closed-loop positioning plate is provided with a gear, and a rotating shaft of the motor is provided with a gear;
the controller controls the motor to rotate according to a preset rotating speed for a preset time, and a gear of the motor drives a gear of the closed-loop positioning disc to rotate.
3. The apparatus of claim 1, wherein the rotational axis of the motor is connected to a preset position on the closed-loop puck;
the controller controls the motor to rotate according to a preset rotating speed for a preset time, and the rotating shaft of the motor drives the closed-loop positioning disc to rotate.
4. The apparatus of any of claims 1-3, wherein the differently oriented windows on the shuttered shutter comprise: the window comprises an upper window, a lower window, a left window, a right window, a middle window, a left lower window, a left upper window, a right lower window and a right upper window.
5. A flame detection method applied to the flame detection apparatus of any one of claims 1 to 4, the method comprising:
acquiring a time sequence signal generated by the optical coupling sensor receiving the irradiation of ultraviolet rays emitted by flame within a preset time period;
and determining the direction of the flame according to the time sequence signal.
6. The method of claim 5, wherein prior to said determining the direction of the flame from the timing signal, the method further comprises:
and controlling a motor to drive a closed-loop positioning disc to rotate according to a preset rotating speed for the preset time.
7. The method as claimed in claim 6, wherein the timing signal carries a first time when the ultraviolet ray passes through the azimuth reset hole and a second time when the ultraviolet ray passes through an azimuth directional hole corresponding to the skylight shutter within the preset time period;
correspondingly, the determining the direction of the flame according to the time sequence signal comprises:
determining a target time difference according to the second moment and the first moment;
and determining the direction of the flame according to the target time difference and a preset time azimuth table, wherein time differences corresponding to different azimuths are recorded in the time azimuth table.
8. A flame detection device, applied to the flame detection apparatus of any one of claims 1 to 4, comprising:
the acquisition module is used for acquiring a time sequence signal generated by the optical coupling sensor receiving the irradiation of the ultraviolet rays emitted by the flame within a preset time length;
and the processing module is used for determining the direction of the flame according to the time sequence signal.
9. A control apparatus, characterized by comprising: a processor, a memory, and computer program instructions stored on the memory and executable on the processor, the processor when executing the computer program instructions implementing the flame detection method of any of claims 5 to 7.
10. A computer-readable storage medium having computer-executable instructions stored thereon, which when executed by a processor, are configured to implement the flame detection method of any of claims 5 to 7.
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| CN112880839A (en) * | 2021-03-27 | 2021-06-01 | 山东创能机械科技有限公司潍坊分公司 | Rotary infrared heat source direction detection device |
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| JPS597281A (en) * | 1982-07-06 | 1984-01-14 | Toshiba Corp | Flame detector with shutter mechanism |
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Address after: 518100 Guangdong Shenzhen Baoan District Xixiang street, Wutong Development Zone, Taihua Indus Industrial Park 8, 3 floor. Patentee after: Shenzhen Haiqing Zhiyuan Technology Co.,Ltd. Address before: 518100 Guangdong Shenzhen Baoan District Xixiang street, Wutong Development Zone, Taihua Indus Industrial Park 8, 3 floor. Patentee before: SHENZHEN HIVT TECHNOLOGY Co.,Ltd. |
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