CN210222058U - Wind direction detection device for air outlet of cleaning fan - Google Patents
Wind direction detection device for air outlet of cleaning fan Download PDFInfo
- Publication number
- CN210222058U CN210222058U CN201921376201.6U CN201921376201U CN210222058U CN 210222058 U CN210222058 U CN 210222058U CN 201921376201 U CN201921376201 U CN 201921376201U CN 210222058 U CN210222058 U CN 210222058U
- Authority
- CN
- China
- Prior art keywords
- air outlet
- wind direction
- tracer
- strip
- image acquisition
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Indicating Or Recording The Presence, Absence, Or Direction Of Movement (AREA)
Abstract
The utility model provides a cleaning fan air outlet wind direction detection device, which comprises a wind direction tracer, an image acquisition device and a controller; the wind direction tracer device is arranged outside the air outlet and can move along the axial direction of the fan; the wind direction tracing device comprises a rotatable tracing bar; the image acquisition device is used for acquiring images of the air outlet tracing strips and transmitting the images to the controller; the controller is connected with the image acquisition device, and the controller obtains a wind direction angle value according to the included angle between the image processing analysis tracer strip and the horizontal line, and provides a new detection means for detecting the wind direction. The utility model provides a detection method degree of automation is high, carries out image acquisition and processing through detection method and obtains corresponding angle value, and the error is little, and the processing speed is fast, and the method is simple, and the precision is high.
Description
Technical Field
The utility model belongs to the agricultural machinery field, concretely relates to clean fan air outlet wind direction detection device.
Background
Wind direction detection is an important aspect of fan airflow dynamic parameter monitoring. In the field of fluid machinery using air as a medium, the existing wind direction detection technology is mainly used in ventilation pipelines and other scenes, and the wind direction detection technology for the air outlet of a fan is rarely reported.
When the combine harvester harvests in the field, the cleaning device cleans the mixed materials on the sieve surface through the cooperation of the fan and the vibrating screen, removes impurities and obtains clean grains. The wind direction of the air outlet of the fan of the combine harvester has important influence on an airflow field inside the cleaning chamber, errors generated in the manufacturing and assembling processes of the fan can possibly have adverse influence on the wind direction of the air outlet of the fan, the manufacturing and assembling quality of the cleaning fan can be reflected to a certain degree through the wind direction detection of the air outlet of the fan, and at present, no technology for the wind direction of the air outlet of the fan of the combine harvester exists.
The utility model with the patent number of CN208254397U discloses a hand-held anemoscope based on a Hall angle sensor, which comprises a wind direction sensor, a hand-held rod, a signal processing device and a display screen; the wind direction sensor comprises a wind vane and a Hall angle sensor; the patent calculates the wind direction through the corresponding relation between the wind vane rotation angle and the output electric signal. However, the degree of automation of the patent is not high, a manual handheld detection instrument is needed, the influence of a detection environment is easily caused, the detection error is large, and the detection device is not suitable for wind direction detection of a fan air outlet.
The invention patent with the patent number of CN104535790B discloses a wind speed and direction detection device based on a piezoelectric effect, which comprises an induction system and a measurement system, wherein the induction system comprises a vertical rod made of rubber materials, a piezoelectric ceramic piece, a rotating device and a wind receiving device. The wind receiving device is arranged at the top of a building, the wind receiving device swings with wind to drive the piezoelectric ceramic piece on the vertical rod to deform, the generated electric charge outputs voltage through the measuring circuit, the voltage is compared with the collected voltage, the maximum positive voltage and the maximum negative voltage are generated, the wind direction is determined according to the positive voltage and the negative voltage, and then the wind direction is displayed on the display screen. The patent provides a wind direction detection method, but the wind direction measured by the patent can only be judged through the positive and negative of voltage, the result cannot be directly obtained for the angle of the wind direction, and the method is mainly used for detecting the extensive wind direction in the open space at the top of a building and is not suitable for detecting the wind direction of an air outlet of a fan.
The utility model with the patent number of CN207881825U discloses an ultrasonic wind direction and wind speed measuring device, which comprises a base, a first sensor mounting plate, a second sensor mounting plate, an ultrasonic sensor, a first ultrasonic reflection plate and a second ultrasonic reflection plate; the second sensor mounting plate is fixed on the base, a second ultrasonic reflection plate is fixed at the upper end of the second sensor mounting plate, and three ultrasonic sensors are arranged on the second ultrasonic reflection plate in a regular triangle; the lower extreme of first sensor mounting panel is fixed with first ultrasonic wave reflecting plate install three ultrasonic sensor with the ultrasonic sensor on the second ultrasonic wave reflecting plate on the first ultrasonic wave reflecting plate position that corresponds. But the device still is bigger than normal, and the installation is loaded down with trivial details, consequently is not applicable to cleaning fan's wind direction and detects.
SUMMERY OF THE UTILITY MODEL
To the technical problem, the utility model provides a clean fan air outlet wind direction detection device solves one of the above-mentioned problem at least. The utility model collects the image of the air outlet tracing strip through the image collecting device and transmits the image to the controller; the controller obtains a wind direction angle value according to the included angle between the image processing analysis tracer bar and the horizontal line, and provides a novel wind direction detection technology of the air outlet of the fan.
The utility model provides a technical scheme that its technical problem adopted is: a cleaning fan air outlet wind direction detection device comprises a tracer strip, an image acquisition device and a controller;
the tracing strip can be rotatably arranged outside the air outlet;
the image acquisition device is used for acquiring images of the air outlet tracing strips and transmitting the images to the controller;
the controller is connected with the image acquisition device, and the controller analyzes the included angle between the tracing strip and the horizontal line according to the image to obtain a wind direction angle value.
In the scheme, the device further comprises a background plate; the tracing strip can be rotatably arranged on the background plate;
the image acquisition device is used for acquiring the image of the tracer strip on the background plate.
Further, be equipped with spike strip branch on the background board, the one end of spike strip can be rotatory around spike strip branch.
In the above scheme, the background plate can move along the axial direction of the fan;
the background plate is arranged on the fixed rod;
the bottom of dead lever is equipped with the slider, the slider is installed on the spout.
In the above scheme, the background plate is further provided with a horizontal reference line;
one end of the tracing strip is intersected with one end of the horizontal reference line;
the background plate is also provided with a cross mark.
In the above scheme, the image acquisition device comprises a camera, a zoom lens and an annular light source;
the lens of the camera is a zoom lens; the annular light source is mounted on the camera.
In the above scheme, the tracing strips comprise an upper layer cloth strip and a lower layer cloth strip; the upper layer cloth strip is bonded with the lower layer cloth strip.
In the scheme, a plurality of quality pieces are arranged between the upper layer cloth strip and the lower layer cloth strip, and gaps exist among the quality pieces.
In the above scheme, the tracer strips are streamlined.
In the scheme, the air outlet of the fan is marked with a plurality of point positions along the axial direction, and the image acquisition device acquires position images of the tracing strip at the same height of each point position;
and a plurality of point positions of the air outlet of the fan along the axial mark are symmetrically distributed along the radial central line of the air outlet.
Compared with the prior art, the beneficial effects of the utility model are that: the utility model collects the image of the air outlet tracing strip through the image collecting device and transmits the image to the controller; the controller analyzes the included angle between the tracer strip and the horizontal line according to image processing to obtain the wind direction angle value, and a new detection means is provided for detecting the wind direction.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is an axial view of a cleaning fan outlet wind direction detecting device according to an embodiment of the present invention;
fig. 2 is a side view of a tracer according to an embodiment of the invention;
fig. 3 is a front view of a tracer according to an embodiment of the invention;
FIG. 4 is an enlarged view at FIG. 3I;
fig. 5 is a front view of a detection device according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a tracing bar according to an embodiment of the present invention;
fig. 7 is a block diagram of a detection device according to an embodiment of the present invention;
fig. 8 is a flowchart of angle measurement according to an embodiment of the present invention.
In the figure: 1-a fan, 2-an air outlet, 3-a background plate, 4-a tracing strip, 5-a fixed rod, 6-a ring light source, 7-an industrial CCD, 8-a slide block, 9-a slide groove, 10-a tripod, 11-a controller, 301-a cross mark, 302-a tracing strip support rod, 303-a horizontal reference line, 304-a step groove, 401-a buckle, 402-a metal sheet, 403-an upper layer of cloth strip, 404-a lower layer of cloth strip and 701-a zoom lens.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "axial", "radial", "vertical", "horizontal", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.
In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
As shown in fig. 1, the cleaning fan air outlet wind direction detection device of the present invention is a preferred embodiment, and comprises a wind direction tracer, an image acquisition device and a controller 11; the wind direction tracing device is arranged outside the air outlet 2 and can move along the axial direction of the fan 1; the wind direction tracer comprises a rotatable tracer bar 4; the image acquisition device is used for acquiring images of the tracing strips 4 at the air outlet 2 and transmitting the images to the controller 11; the controller 11 is connected with the image acquisition device, and the controller 11 analyzes the included angle between the tracer strip 4 and the horizontal line according to image processing to obtain a wind direction angle value. The utility model discloses a contained angle reflection wind direction of detecting spike strip and horizontal reference line provides a new detection means for detecting the wind direction.
According to this embodiment, the controller may be a computer.
According to the present embodiment, it is preferable that the wind direction tracing device further includes a background plate 3, as shown in fig. 2, the tracing bar 4 is rotatably mounted on the background plate 3; the image acquisition device is used for acquiring the image of the tracer strip 4 on the background plate 3. As shown in fig. 2, the dotted line part represents the position of the tracer bar 4 in the initial state, i.e. when the fan is not started; the solid line part shows the position of the tracer strip 4 when the fan is running, i.e. when the fan is operating steadily.
According to the present embodiment, preferably, a horizontal reference line 303 is further provided on the background plate 3; one end of the tracer strip 4 intersects one end of a horizontal reference line 303. According to the present embodiment, it is preferable that the background plate 3 is further provided with a cross mark 301. Specifically, three cross marks 301 are shown, and are respectively located at the upper left corner, the upper right corner and the lower right corner of the background plate 3; a horizontal reference line 303 is positioned at the lower side of the background plate 3, and the horizontal reference line 303 is collinear with a horizontal line formed by connecting the center of the tracer bar support rod 302 and the cross mark 301 at the lower right corner and is used as a reference datum for the rotation of the tracer bar 4;
according to this embodiment, it is preferred, background board 3 lower left corner is equipped with tracer strip branch 302, as shown in fig. 3 and 4, be equipped with the ladder groove 304 on the tracer strip branch 302, the one end of tracer strip 4 is passed through buckle 401 and is installed in ladder groove 304, and the one end of tracer strip 4 can be rotatory around tracer strip branch 302. Tracer 4 has certain distance, about 8mm in 1 axial direction of fan and background board 3, and tracer 4 can rotate around tracer branch 302 under the effect of 2 air currents in air outlet.
According to the present embodiment, it is preferable that the background plate 3 is mounted on a fixing rod 5; the base of the fixed rod 5 is fixed on a sliding block 8 through a bolt, the sliding block 8 is installed on a sliding groove 9, and the sliding block 8 can move in the sliding groove 9 along the axial direction of the fan 1.
According to the present embodiment, preferably, the image capturing device includes a camera, a zoom lens 701, a ring light source 6 and a tripod 10, as shown in fig. 5, the camera may be an industrial CCD7, the zoom lens 701 is mounted on an industrial CCD7, and the industrial CCD7 and the ring light source 6 are fixed on the tripod 10 and connected to the controller 11 through data lines. The lens of the industrial CCD7 is required to be distortion-free, and is a zoom lens 701, so that the adjustment of the focal length within a certain range is realized, and the composition is convenient; the resolution of the industrial CCD7 meets the requirement of 200-400 ten thousand pixels, and the frame rate is 30 frames/second; when taking a photo, 15-20 photos are required to be taken every second. The axis of the annular light source 6 is coincident with the axis of a zoom lens 701 of the industrial CCD7, and the color temperature of the annular light source 6 is adjustable.
According to this embodiment, the tracer strip 4 preferably includes an upper layer cloth strip 403 and a lower layer cloth strip 404, as shown in fig. 6; the upper cloth strip 403 is adhered to the lower cloth strip 404, a plurality of quality sheets 402 are arranged between the upper cloth strip 403 and the lower cloth strip 404, and gaps exist between the quality sheets 402. The length-width ratio of the tracer strips 4 is 8:1, and the length of the tracer strips is 80 mm.
According to this embodiment, it is preferred that tracer 4 is streamlined, and the air current of being convenient for passes through, suppresses the violent undulant of tracer 4, guarantees that tracer 4 is undulant smoothly outside air outlet 2.
According to the present embodiment, the background plate 3 and the trace strip 4 are preferably formed with a color contrast, such as a black-and-white color contrast, for image processing. The mass pieces 402 are iron pieces, each piece having a mass of 50g, and the iron pieces and the number thereof can be arranged according to fig. 6.
According to this embodiment, preferably, the air outlet 2 of the fan 1 marks a plurality of point locations along the axial direction, and the image acquisition device acquires position images of the tracer strips 4 of the wind direction tracer at the same height at each point location.
According to this embodiment, preferably, the plurality of point locations of the air outlet 2 of the fan 1 marked along the axial direction are symmetrically distributed along the radial center line of the air outlet 2, and if the measured wind direction angles of the two point locations at the symmetrical positions do not form a mirror surface, the problem of the manufacturing and assembling quality of the fan is reflected to a certain extent. The sliding block 8 stops at each point, and the industrial CCD7 takes pictures for storage; the positions of the industrial CCD7 and the annular light source 6 are always unchanged, when the background plate 3 and the tracing strip 4 move to the next point position along with the slide block 8, the focal length of the zoom lens 701 always ensures that the sizes of the tracing strips 4 in the shot image are consistent according to the distance between the lens and the tracing strip 4 and the cross mark 301 on the background plate 3, and the image processing is facilitated. The lens axis of the industrial CCD7 is perpendicular to the background plate 3, and the shooting visual angle covers the tracer 4, and is used for shooting the image formed by the tracer 4 and the horizontal reference line 303 under the action of the air flow at the air outlet 2 of the fan.
Based on the hardware and software, the angle of the tracer strip 4 relative to the horizontal reference line 303 at different positions is continuously collected, processed and analyzed, and the measured angle at each position is counted to obtain the wind direction angle at the position.
As shown in fig. 7, the controller 11 includes an image receiving module, an image processing module, and a result display module.
The image receiving module is responsible for collecting the images of the air outlet tracing strips 4 and transmitting the images to the image processing module; the image processing module is responsible for processing and analyzing the image and calculating an included angle between the tracing strip 4 and the horizontal reference line 303; and the result display module is responsible for displaying and storing the processing result. The image receiving module, the processing module and the display module are composed of programs written by MATLAB language. The image receiving module controls the industrial CCD7 to photograph the tracing strip 4 on the front side of the air outlet 2, the photographed image is input to the controller 11 to be subjected to image processing, and an included angle between the tracing strip 4 and the horizontal reference line 303 is obtained through processing. The image processing module performs gray processing on the acquired image of the tracer 4, then performs binarization processing, then performs edge extraction by using a Canny function in MATLAB language, takes the pixel point of the image as a two-dimensional array, determines a straight line by using two points, calculates the slope of the straight line, and then converts the straight line into an angle in a visual absolute coordinate system to serve as the wind direction angle reflected by the tracer 4.
Fig. 8 shows the working process of the cleaning fan air outlet wind direction detection device:
a preparation stage: arranging an image acquisition device and a wind direction tracing device;
a starting stage: starting the industrial CCD7 and the controller 11 in the image acquisition device;
image acquisition and wind direction calculation: the image acquisition device gathers the image of 2 spike strips 4 of air outlet to transmit controller 11, controller 11 obtains wind direction angle value according to the contained angle of image processing analysis spike strip 4 and water flat line.
According to this embodiment, preferably, the image acquisition and wind direction calculation process specifically includes:
moving the tracing strip 4 to a first point position, and adjusting the focal length of a zoom lens 701 to enable the cross mark 301 on the background plate 3 to be in the shot image; the image acquisition device acquires the image of the tracer strip 4 and transmits the image to an image receiving module of the controller 11; the image receiving module transmits the image to the image processing module, the image processing module processes the image of the tracer strip 4 to further obtain an included angle between the tracer strip 4 and a horizontal line, and the image processing module inputs the angle value to the result display module;
moving the tracing strip 4 to the next point position at the same height through the sliding block 8, adjusting the focal length of the zoom lens 701, and always ensuring that the tracing strip 4 in the shot image is consistent with the tracing strip 4 in the shot image of the first point position according to the distance between the lens 701 and the tracing strip 4 and the cross mark 301 on the background plate 3; the image acquisition device acquires the image of the tracer strip 4 and transmits the image to the image receiving module of the controller 11; the image receiving module transmits the image to the image processing module, the image processing module processes the image of the tracer strip 4 to further obtain an included angle between the tracer strip 4 and a horizontal line, and the image processing module inputs the angle value to the result display module; until the images of the tracing strips 4 at all the point positions are completely collected;
and an image processing module of the controller 11 calculates an included angle between each point position tracing strip 4 and the horizontal reference line 303, and averages the included angles to obtain the detection of the wind direction angle value of the fan air outlet 2 at the same axial height position.
According to this embodiment, preferably, the calculation of the included angle between each point location tracer 4 and the horizontal reference line 303 is specifically performed by the following steps:
the controller 11 reads the image of the tracing strip 4 of the image acquisition device, and performs gray processing and edge extraction on the image;
determining a two-dimensional array of pixel points in the image, establishing a coordinate system, taking rows Y1 and Y2, and defining initial variables X1 and X2;
in order to prevent noise interference, range limitation is carried out on pixel points i which are measured and calculated, points are circularly acquired, and all pixel points of a given row are traversed within a certain range;
determining a straight line by two points, calculating the slope k of the straight line, converting the slope k into an angle in a visual absolute coordinate system, circularly acquiring and processing images within time t, and obtaining an angle average value to obtain a wind direction angle value.
The utility model discloses a gather in succession, handle, assay in the angle of same high different positions department tracer strip 4 for horizontal reference line 303, the angle that every position of statistics was surveyed is solved the average and is obtained the wind direction angle of same high position.
It should be understood that although the present description has been described in terms of various embodiments, not every embodiment includes only a single embodiment, and such description is for clarity purposes only, and those skilled in the art will recognize that the embodiments described herein may be combined as suitable to form other embodiments, as will be appreciated by those skilled in the art.
The above detailed description is only for the purpose of illustrating the practical embodiments of the present invention, and they are not intended to limit the scope of the present invention, and all equivalent embodiments or modifications that do not depart from the technical spirit of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. A cleaning fan air outlet wind direction detection device is characterized by comprising a tracer bar (4), an image acquisition device and a controller (11);
the tracing strip (4) can be rotatably arranged outside the air outlet (2);
the image acquisition device is used for acquiring images of the tracing strips (4) at the air outlet (2) and transmitting the images to the controller (11);
the controller (11) is connected with the image acquisition device.
2. A cleaning fan air outlet wind direction detection device according to claim 1, characterized by further comprising a background plate (3); the tracing strip (4) is rotatably arranged on the background plate (3);
the image acquisition device is used for acquiring images of the tracer strips (4) on the background plate (3).
3. A cleaning fan air outlet wind direction detection device as claimed in claim 2, characterized in that the background plate (3) is provided with a tracer bar support rod (302), and one end of the tracer bar (4) can rotate around the tracer bar support rod (302).
4. A cleaning fan air outlet wind direction detecting device according to claim 2, characterized in that the background plate (3) can move axially along the fan (1);
the background plate (3) is arranged on the fixing rod (5);
the bottom of dead lever (5) is equipped with slider (8), slider (8) are installed on spout (9).
5. A cleaning fan air outlet wind direction detecting device according to claim 2, characterized in that the background plate (3) is also provided with a horizontal reference line (303);
one end of the tracing strip (4) is intersected with one end of the horizontal reference line (303); the background plate (3) is also provided with a cross mark (301).
6. A cleaning fan air outlet wind direction detecting device according to claim 1, characterized in that the image collecting device comprises a camera, a zoom lens (701) and an annular light source (6);
the lens of the camera is a zoom lens (701); the annular light source (6) is mounted on the camera.
7. A cleaning fan air outlet wind direction detecting device according to claim 1, characterized in that the tracer strips (4) include an upper layer of cloth strips (403) and a lower layer of cloth strips (404); the upper layer cloth strip (403) is bonded with the lower layer cloth strip (404).
8. A cleaning fan air outlet wind direction detecting device according to claim 7, characterized in that a plurality of mass pieces (402) are arranged between the upper layer cloth strips (403) and the lower layer cloth strips (404), and gaps exist between the mass pieces (402).
9. A cleaning fan air outlet wind direction detection device according to claim 1, characterized in that the tracer strips (4) are streamlined.
10. A cleaning fan air outlet wind direction detection device according to claim 1, characterized in that the air outlet (2) of the fan (1) is marked with a plurality of point locations along the axial direction, and the image acquisition device acquires position images of the tracer strips (4) at the same height of each point location;
the air outlet (2) of the fan (1) is symmetrically distributed along a plurality of points marked axially by the radial central line of the air outlet (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921376201.6U CN210222058U (en) | 2019-08-23 | 2019-08-23 | Wind direction detection device for air outlet of cleaning fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921376201.6U CN210222058U (en) | 2019-08-23 | 2019-08-23 | Wind direction detection device for air outlet of cleaning fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210222058U true CN210222058U (en) | 2020-03-31 |
Family
ID=69919917
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921376201.6U Expired - Fee Related CN210222058U (en) | 2019-08-23 | 2019-08-23 | Wind direction detection device for air outlet of cleaning fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210222058U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111679616A (en) * | 2020-07-09 | 2020-09-18 | 玉环睿升自动化技术有限公司 | Modular air curtain maintenance system based on block chain |
-
2019
- 2019-08-23 CN CN201921376201.6U patent/CN210222058U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111679616A (en) * | 2020-07-09 | 2020-09-18 | 玉环睿升自动化技术有限公司 | Modular air curtain maintenance system based on block chain |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101207833B (en) | Method for checking optical centre bias of lens of digital camera | |
| CN109489566B (en) | Lithium battery diaphragm material slitting width detection method, detection system and device | |
| CN101001319B (en) | Image processing apparatus and image processing method | |
| CN104519328B (en) | Image processing equipment, image capture device and image processing method | |
| CN109100363B (en) | Method and system for distinguishing defects of attached foreign matters from dust | |
| US20090295935A1 (en) | Electronic camera and control program of same | |
| EP1978729A2 (en) | Image processing apparatus, control method therefor, and program | |
| CN213456719U (en) | Detection apparatus for curved surface screen defect | |
| CN1704837A (en) | Projector with a device for measuring angle of inclination | |
| JP3996610B2 (en) | Projector apparatus and image distortion correction method thereof | |
| JP3994217B2 (en) | Abnormal point detection system by image processing | |
| JP3996617B2 (en) | Projector device with image distortion correction function | |
| CN1799079A (en) | Method and system for evaluating moving image quality of displays | |
| CN106023234B (en) | A kind of linear array CCD camera alignment adjusting method | |
| CN113689401A (en) | Method and device for detecting diameter of crystal bar of czochralski silicon single crystal furnace | |
| CN210222058U (en) | Wind direction detection device for air outlet of cleaning fan | |
| CN116030053B (en) | Connector pin defect detection method, device, equipment and medium | |
| JP2005016995A (en) | Infrared structure diagnosis method | |
| CN110596421A (en) | Cleaning fan air outlet wind direction detection device and method | |
| CN206488848U (en) | A kind of big visual field multiple spot three-dimensional vibrating measurement apparatus | |
| US20150085078A1 (en) | Method and System for Use in Detecting Three-Dimensional Position Information of Input Device | |
| CN116381712A (en) | Measurement method based on linear array camera and ground laser radar combined device | |
| JP2007036742A (en) | Method and apparatus for synthesizing multiple images | |
| JP4779491B2 (en) | Multiple image composition method and imaging apparatus | |
| CN115684012A (en) | Visual inspection system, calibration method, device and readable storage medium |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200331 Termination date: 20210823 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |