CN111721508A - Intelligent detection method and device for keyboard backlight module based on counting analysis and identification - Google Patents
Intelligent detection method and device for keyboard backlight module based on counting analysis and identification Download PDFInfo
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Abstract
The invention provides an intelligent detection method and device of a keyboard backlight module based on counting analysis and recognition, comprising the following steps: the method comprises the following steps that a keyboard backlight module to be detected placed on a push disc enters a box body of an intelligent detection device, a data processing module drives LED lamp beads on the keyboard backlight module to be detected to emit light rays with preset colors, and then a high-speed camera module shoots the keyboard backlight module to be detected; the data processing module carries out binarization processing on the acquired picture data based on graying processing, judges the coordinates of each LED lamp bead of the keyboard backlight module to be detected in the picture data, then respectively scans and counts light rays with preset colors emitted by the LED lamp beads on the keyboard backlight module to be detected in the acquired photographed picture data in sequence, and judges whether the keyboard backlight module to be detected is qualified. The invention solves the problems of low efficiency, great harm to eyes of workers and poor reliability existing in the current manual visual inspection in the detection process of the keyboard backlight module.
Description
Technical Field
The invention relates to the field of mechanical vision recognition, in particular to an intelligent detection method and device of a keyboard backlight module based on counting analysis recognition.
Background
The computer keyboard backlight module is one of the key components of a computer, and along with the development of the computer keyboard backlight module, the number of the LED lamps integrated on the computer keyboard backlight module is more and more, and the light-emitting color is also developed from single color to multiple colors. However, the existing detection means for the keyboard backlight module still stays at the stage of manual visual inspection, and the quality of the computer keyboard backlight module is detected in a manual visual observation mode after the computer keyboard backlight module is lightened by using a power supply; the eye fatigue is easily caused by using naked eye detection, and the backlight causes great damage to the eyes of workers. In addition, detection is carried out in a visual observation mode, so that the detection speed is low and the efficiency is low; when workers are in visual fatigue, the problems of poor detection reliability and the like caused by missed detection are easily caused.
Therefore, the invention provides an intelligent detection technical scheme of a keyboard backlight module based on counting analysis and identification, so as to solve the problems of low efficiency, great harm to eyes of workers and poor reliability in the detection process of the current manual visual inspection of the keyboard backlight module.
Disclosure of Invention
The invention provides an intelligent detection method and device of a keyboard backlight module based on counting analysis and recognition, and aims to solve the problems of low efficiency, large damage to eyes of workers and poor reliability existing in the current detection process of manual visual inspection of the keyboard backlight module.
In order to solve the above problems, the present invention provides an intelligent detection method for a keyboard backlight module based on counting analysis and recognition, comprising:
the method comprises the following steps that a keyboard backlight module to be detected placed on a push disc enters a box body of an intelligent detection device, wherein the intelligent detection device is provided with a box body with six sides, an opening is formed in one side, close to a bottom plate, of a front plate of the box body, the shape of the opening is adaptive to the shape of the push disc, and the keyboard backlight module placed on the push disc can enter the box body through the shape of the opening; a data processing module is arranged on the bottom plate of the box body, and a lighting module and a high-speed camera module are arranged on the top plate of the box body;
after the data processing module controls the lighting module to be started, the brightness in the box body meets the requirement of the keyboard backlight module to be tested on mechanical vision detection;
after the data processing module drives LED lamp beads on the keyboard backlight module to be tested to emit light rays with preset colors, the high-speed camera module shoots the keyboard backlight module to be tested and transmits shot picture data to the data processing module;
the data processing module carries out binarization processing on the acquired picture data based on graying processing, judges a coordinate point where a gray value data peak value appears in the picture data, obtains coordinates of each LED lamp bead of the keyboard backlight module to be detected in the shot picture data, then respectively scans and counts light rays with each preset color sent by the LED lamp beads on the keyboard backlight module to be detected in the acquired shot picture data in sequence, judges whether the keyboard backlight module to be detected is qualified or not by judging whether the light rays with all preset colors sent by all the LED lamp beads on the keyboard backlight module to be detected are equal to a preset total number or not, and completes detection of the keyboard backlight module to be detected.
The invention also provides an intelligent detection device of the keyboard backlight module based on counting analysis and recognition, which comprises the following components:
the intelligent detection device is a box body with six surfaces, an opening is arranged on one side, close to the bottom plate, of the front plate of the box body, the shape of the opening is adaptive to the shape of the push disc, and the shape of the opening enables the keyboard backlight module placed on the push disc to enter the box body; a data processing module is arranged on the bottom plate of the box body, a lighting module and a high-speed camera module are arranged on the top plate of the box body, wherein,
the illumination module is used for illuminating to enable the brightness in the box body to meet the requirement of the keyboard backlight module to be tested on mechanical vision detection;
the high-speed camera module is used for shooting the keyboard backlight module to be tested and transmitting the shot picture data to the data processing module;
the data processing module is used for driving LED lamp beads on the backlight module of the keyboard to be tested to emit light with preset colors after controlling the lighting module to be started, and analyzing and processing the received picture data shot by the high-speed camera module, wherein, based on the graying treatment, the binarization treatment is carried out to the acquired picture data, the coordinate point of the gray value data peak value in the picture data is judged, so as to obtain the coordinates of each LED lamp bead of the keyboard backlight module to be tested in the shot picture data, then, the light rays with preset colors emitted by the LED lamp beads on the keyboard backlight module to be tested in the obtained picture data are scanned and counted in sequence, and judging whether the backlight module of the keyboard to be detected is qualified or not by judging whether all the light rays with preset colors sent by all the LED lamp beads on the backlight module of the keyboard to be detected are equal to the preset total number or not, and finishing the detection of the backlight module of the keyboard to be detected.
By the scheme, the light source required by detection is provided for the box body through the lighting module, the high-speed camera module can shoot high-definition pictures for the keyboard backlight module which enters the box body and needs to be detected, and the shot high-definition picture data are transmitted to the data processing module; the intelligent detection device has universality, and only the number of light sources which should appear in the acquired image needs to be modified when the keyboard backlight modules of other models are tested, so that the adaptability of the intelligent detection device is improved, and the production cost can be greatly reduced when the keyboard backlight modules of various specifications are tested; meanwhile, the traditional manual visual inspection mode is not needed, the on-site debugging workload of personnel can be effectively reduced, the problems of low efficiency, large damage to eyes of workers and poor reliability in manual visual inspection are solved, and the working efficiency of the production system is improved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:
fig. 1 is a schematic structural diagram of an intelligent detection device of a keyboard backlight module based on counting, analyzing and identifying according to the present invention;
FIG. 2 is a cross-sectional view of an intelligent detection device of a keyboard backlight module based on counting, analyzing and identifying according to the present invention;
fig. 3 is a flowchart of an intelligent detection method of a keyboard backlight module based on counting, analyzing and identifying according to the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the present application will be described in detail and completely with reference to the following specific embodiments of the present application and the accompanying drawings. It should be apparent that the described embodiments are only some of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The technical solutions provided by the embodiments of the present application are described in detail below with reference to the accompanying drawings.
The utility model provides a keyboard backlight unit's intelligent detection's based on count analysis discernment technical scheme is whether to reach the requirement through the count appears in the sampling image light source quantity and judges whether the sample that awaits measuring is qualified. If 145 LED lamp beads exist in the sample to be detected, sampling an image, and analyzing the image to obtain 145 light sources, the sample to be detected is qualified, otherwise, the sample to be detected is unqualified. The scheme of this application need not fix a position the keyboard backlight unit that awaits measuring in detection device, so push away the dish part and need not set up reference column or location frame, the intelligent detection device of this application has the commonality, when testing the keyboard backlight unit of other models, only need modify gather in the image should appear the light source number can, improved intelligent detection device's adaptability, can greatly reduced manufacturing cost when testing the keyboard backlight unit of multiple specification.
As shown in fig. 1 and fig. 2, the intelligent detection device for the keyboard backlight module based on counting analysis and recognition of the present invention is configured as a box T having six sides, each side of the hexahedron is configured as a rectangle, wherein a top plate 2 of the box T is provided with an illumination module 1 and a high-speed camera module 4, a front plate 5 of the box T is provided with a touch display screen module 6, and one side of the front plate 5 close to a bottom plate 14 is provided with an opening, the shape of the opening is adapted to the shape of a push tray 9, and the shape of the opening enables the keyboard backlight module 7 placed on the push tray 9 to enter the interior of the box T; a data processing module 12 and a brightness sensor 13 are arranged on a bottom plate 14 of the box body T; the lighting module 1, the high-speed camera module 4, the touch display screen module 6, the keyboard backlight module 7, the data processing module 12 and the brightness sensor 13 are electrically connected.
The lighting module 1 can provide a light source required by detection in the box body T, and the high-speed camera module 4 can shoot a high-definition picture for the keyboard backlight module 7 required to be detected entering the box body T and transmit the shot high-definition picture data to the data processing module 12; the data processing module 12 analyzes the obtained actual picture data of the keyboard backlight module 7 to be detected, and determines whether the keyboard backlight module 7 to be detected has defects.
As shown in fig. 3, the intelligent detection method for the keyboard backlight module based on counting, analyzing and identifying of the application comprises the following steps:
step 31, enabling the keyboard backlight module to be detected placed on the push disc to enter the box body of the intelligent detection device, wherein the intelligent detection device is arranged into a box body with six sides, an opening is formed in one side, close to the bottom plate, of the front plate of the box body, the shape of the opening is suitable for the shape of the push disc, and the keyboard backlight module placed on the push disc can enter the box body due to the shape of the opening; a data processing module and a brightness sensor are arranged on the bottom plate of the box body, and a lighting module and a high-speed camera module are arranged on the top plate of the box body;
step 32, after the data processing module controls the lighting module to be started, the brightness in the box body meets the requirement of the keyboard backlight module to be detected for mechanical vision detection;
after the data processing module controls the lighting module to be started, the brightness sensor transmits the brightness data which is detected by the lighting module to the data processing module; and after the data processing module calculates according to the obtained brightness data, the brightness value of light emitted by the illumination module is adjusted, so that the brightness in the box body meets the requirement of the keyboard backlight module on mechanical vision detection.
Specifically, the range of the luminance value collected by the luminance sensor is 0.01lux to 64k lux, and the luminance value is transmitted to the data processing module by sending 32bit data through an IIC protocol. The high-frequency PWM control constant-current driving circuit is adopted in the lighting module, and the data processing module controls the brightness of the LED lamp of the lighting module by adjusting the sent PWM signal. The illuminance value range of the normal state in the box body is preset in the data processing module and ranges from 500lux to 550lux, the luminance sensor carries out illuminance acquisition once before starting the test every time, and when the illuminance value in the box body deviates from the normal range, the data processing module adjusts the duty ratio of a PWM signal sent to the lighting module through a PI algorithm to correct the illuminance in the box body, so that the illuminance value returns to the normal range.
The following formula is the relation between the measured value of the brightness sensor and the duty ratio of the PWM signal sent to the lighting module by the data processing module:
wherein e (K) is the deviation between the illuminance measured value at the current moment and the preset value range, KpAnd KIRespectively taking a proportional coefficient and an integral coefficient, and taking 0.05 and 0.036; t is the accumulated error times, t can be 10, u (k) is the duty ratio value of the PWM signal sent by the data processing module to the lighting module.
33, after the data processing module drives the LED lamp beads on the backlight module of the keyboard to be tested to emit light rays with preset colors, the high-speed camera module shoots the backlight module of the keyboard to be tested and transmits shot picture data to the data processing module;
the LED lamp beads on the keyboard backlight module need to be grouped to emit light in the actual operation process, the group A and the group B (namely 1 LED lamp bead of the group B in the middle of the adjacent 2 LED lamp beads in the group A, the LED lamp beads can be pushed in the same way, 1 LED lamp bead of the group A in the middle of the adjacent 2 LED lamp beads in the group B, and thus the image sampling can be prevented, the adjacent two bright spots can be connected together to influence the final recognition rate). In the test process, the group A is tested, and the group B is closed completely; and after the group A test is finished, testing the group B again, and closing all the group A.
Specifically, step 33 includes:
the LED lamp beads on the keyboard backlight module to be tested are grouped, wherein the grouping strategy is as follows: the LED lamp beads are divided into a group A and a group B, wherein two adjacent LED lamp beads are divided into different groups, namely the middle of 2 adjacent LED lamp beads in the group A is 1 LED lamp bead in the group B, and similarly, the middle of 2 adjacent LED lamp beads in the group B is 1 LED lamp bead in the group A;
the data processing module drives the LED lamp beads in the group A on the backlight module of the keyboard to be tested to emit light rays with preset colors, and after the LED lamp beads in the group B are turned off, the high-speed camera module shoots the backlight module of the keyboard to be tested; wherein, the last LED lamp pearl of keyboard backlight unit that awaits measuring sends the light of predetermineeing the colour can include: red, green and blue light;
the data processing module drives the B groups of LED lamp beads on the keyboard backlight module to be tested to emit light rays with preset colors, and after the A groups of LED lamp beads are closed, the high-speed camera module shoots the keyboard backlight module to be tested; wherein, the last LED lamp pearl of keyboard backlight unit that awaits measuring sends the light of predetermineeing the colour can include: red, green and blue light.
In an actual test, 145 RGB-LED lamp beads are arranged on the backlight module of the keyboard to be tested, and it is necessary to detect red, green, and blue light emissions of all the LED lamp beads to determine whether the LED lamp beads are normal.
And step 34, the data processing module performs binarization processing on the acquired picture data based on graying processing, judges a coordinate point where a gray value data peak value appears in the picture data, so as to obtain coordinates of each LED lamp bead of the keyboard backlight module to be detected in the shot picture data, then sequentially scans and counts light rays with each preset color emitted by the LED lamp beads on the keyboard backlight module to be detected in the acquired shot picture data, judges whether the keyboard backlight module to be detected is qualified or not by judging whether the light rays with all preset colors emitted by all the LED lamp beads on the keyboard backlight module to be detected are equal to a preset total number or not, and completes detection of the keyboard backlight module to be detected.
The data processing module carries out binarization processing on the acquired picture data based on graying processing, and judges a coordinate point where a gray value data peak value appears in the picture data so as to obtain the coordinates of each LED lamp bead of the keyboard backlight module to be detected in the shot picture data, and the data processing module comprises the following steps:
the data processing module obtains coordinate values of the group A of LED lamp beads in the obtained picture, wherein the data processing module drives all red lamps, green lamps and blue lamps in the group A of LED lamp beads to be turned on, the high-speed camera module collects images of the keyboard backlight module to be tested once to obtain 320 x 240 pixel point data, the collected pixel point data respectively comprise brightness values of red R (i, j), green G (i, j) and blue B (i, j), and the obtained picture data is subjected to graying processing by adopting a weighted average method, and the specific formula is as follows:
Gray(i,j)＝0.299×R(i,j)+0.578×G(i,j)+0.114×B(i,j)；
the data processing module traverses the image Gray value data of all the pixel points, compares the Gray value Gray (i, j) of the pixel point with the Gray values of 48 pixel points around the pixel point, and judges that if the Gray value of the pixel point is the maximum value of the Gray values in 49 pixel points and is greater than 100, the Gray value of the pixel point is set to be 255, otherwise, the Gray value is set to be 0; after traversing all the pixel point gray value data in the acquired picture, the pixel point coordinate finally marked as 255 is the central coordinate of each LED lamp bead of the keyboard backlight module to be detected in the acquired picture.
| 32 | 45 | 46 | 63 | 48 | 39 | 32 | 42 | 68 | 84 | 61 | 45 | 21 | 1 |
| 42 | 63 | 86 | 104 | 83 | 61 | 40 | 62 | 82 | 110 | 86 | 66 | 41 | 19 |
| 83 | 103 | 122 | 145 | 123 | 108 | 82 | 102 | 131 | 153 | 128 | 110 | 92 | 40 |
| 124 | 148 | 169 | 192 | 170 | 149 | 123 | 143 | 179 | 201 | 173 | 153 | 110 | 86 |
| 103 | 128 | 141 | 162 | 142 | 121 | 98 | 110 | 150 | 172 | 145 | 123 | 98 | 71 |
| 64 | 89 | 104 | 126 | 101 | 86 | 63 | 83 | 109 | 136 | 105 | 84 | 63 | 42 |
| 42 | 63 | 84 | 108 | 82 | 61 | 39 | 52 | 71 | 92 | 69 | 42 | 28 | 3 |
| 1 | 20 | 42 | 63 | 84 | 106 | 77 | 54 | 31 | 16 | 0 | 0 | 0 | 0 |
| 32 | 53 | 72 | 98 | 119 | 143 | 129 | 108 | 96 | 71 | 54 | 21 | 1 | 0 |
| 63 | 89 | 110 | 131 | 154 | 187 | 162 | 143 | 121 | 101 | 85 | 43 | 26 | 5 |
| 43 | 75 | 98 | 106 | 125 | 139 | 108 | 84 | 62 | 42 | 19 | 7 | 0 | 0 |
| 0 | 11 | 28 | 43 | 69 | 99 | 71 | 54 | 32 | 10 | 0 | 0 | 0 | 0 |
TABLE 1 local Gray value data of pre-processed images
TABLE 2 local Gray value data of processed image
The data processing module respectively to waiting in the picture data of acquireing the shooting to await measuring in the keyboard backlight unit that awaits measuring light that LED lamp pearl sent respectively predetermine the colour and scan the count in proper order, through judging whether all the light of predetermineeing the colour that all LED lamp pearls sent on the keyboard backlight unit that awaits measuring were all equal to predetermine the total number, judge whether the keyboard backlight unit that awaits measuring is qualified, accomplish the step of the detection of the keyboard backlight unit that awaits measuring, include:
the data processing module calculates the quantity of light sources with different colors after obtaining the central coordinates of all LED lamp beads of the keyboard backlight module to be tested in the shot picture data, wherein the data processing module drives all red lamps in all LED lamp beads of the group A on the keyboard backlight module to be tested to be turned on, and after turning off the green lamps and the blue lamps, the high-speed camera module carries out image acquisition on the keyboard backlight module once to obtain the picture data and send the picture data to the data processing module, judges the light source central pixel point data of the marked LED lamp beads, and if the central coordinates satisfy R (i, j)>160，G(i,j)<80 and B (i, j)<80, the number of red light emitting lamps is RAcountAdding 1 to count the A groups of luminous red lamps to obtain the quantity R of the A groups of luminous red lampsAcount(ii) a Operating in the same way, counting the group A of the luminous green lamps to obtain the group A of the luminous green lampsQuantity GAcountAnd the number B of the group A of the luminous blue lamps is obtained after the group A of the luminous blue lamps is countedAcount；
The data processing module finishes the luminous red light R of the group A of LED lamp beadsBcountGreen light GBcountAnd a light-emitting blue lamp BBcountAfter calculation, the same reasoning can be inferred, and the luminous red light R of the group B of LED lamp beads is subjected to the above-mentioned modeBcountGreen light GBcountAnd a light-emitting blue lamp BBcountCounting is carried out;
the data processing module group comprises a group A and a group B of light-emitting red lamps (R)count＝RAcount+RBcount)Green light (G)count＝GAcount+GBcount)And a luminous blue lamp (B)count＝BAcount+BBcount)The number is summed separately, and if R is satisfied, the number is judgedcount＝Gcount＝BcountIf the total number is preset, all the red lamps, the green lamps and the blue lamps on all the LED lamp beads on the keyboard backlight module are judged to be normal, namely, the product is qualified, and if not, the product is judged to be unqualified.
In actual operation, after coordinates of the LED lamp beads on the keyboard backlight module are obtained, the number of light sources with different colors is calculated. The data processing module drives all red lamps in all LED lamp beads of the group A on the keyboard backlight module to be tested to be turned on, all green lamps and all blue lamps are turned off, and the high-speed camera module performs image acquisition once to acquire picture data. Judging whether the light source center pixel point data of the marked LED lamp bead meets R (i, j)>160，G(i,j)<80 and B (i, j)<80, the number R of the luminous red lamps meets the requirementAcountAnd adding one. And after the counting of the group A of the luminous red lamps is finished, counting the number of the group A of the luminous green lamps. The data processing module drives all green lights of the group A on the backlight module of the keyboard to be tested to be turned on, the red lights and the blue lights are turned off, and the high-speed camera module carries out image acquisition once to acquire picture data. Judging whether the data of the light source center pixel point of the marked LED lamp bead meet G (i, j)>160，R(i,j)<80 and B (i, j)<80, the number G of green lamps is satisfiedAcountAnd adding one. After the counting of the group A of the luminous green lamps is finished, the group A of the luminous blue lamps can be pushed in the same wayQuantity BAcountAnd (6) performing calculation.
After the calculation of the luminous red light, the luminous green light and the luminous blue light of the group A of LED lamp beads is completed, the same principle can be deduced, and the luminous red light R of the group B of LED lamp beads is calculated according to the modeBcountGreen light GBcountAnd a light-emitting blue lamp BBcountCounting is performed. Finally, the luminous red lamps (R) of the LED lamp beads of the group A and the group Bcount＝RAcount+RBcount)Green light (G)count＝GAcount+GBcount)And a luminous blue lamp (B)count＝BAcount+BBcount)The numbers are summed individually. Judging whether R is satisfiedcount＝Gcount＝BcountIf the red light, the green light and the blue light on all the RGB-LED lamp beads on the keyboard backlight module are all normal, the product is qualified, and otherwise, the product is judged to be unqualified.
Further, the keyboard backlight module device also comprises a keyboard backlight module connector 8 arranged on the push disc 9, the keyboard backlight module 7 is fixedly arranged on the push disc 9 through the keyboard backlight module connector 8 and is connected with the data processing module 12 through the keyboard backlight module connector 8; the keyboard backlight module connector is connected with the keyboard backlight module, when a plurality of keyboard backlight modules are tested, the keyboard backlight module can be detected only after the keyboard backlight module connector is plugged with the keyboard backlight module to be detected, so that the keyboard backlight module is very convenient to operate, simple in structure and high in reliability.
Further, the keyboard backlight module comprises a left slide rail 17 and a right slide rail 16, wherein the left slide rail 17 and the right slide rail 16 are fixedly arranged on the bottom plate 14, two side edges of the push tray 9 are respectively arranged on the left slide rail 17 and the right slide rail 16, and the push tray 9 can enable the keyboard backlight module 7 arranged on the push tray 9 to be horizontally moved into the box body T through the left slide rail 17 and the right slide rail 16; the two side sliding rails are mature and simple in structure, production and manufacturing cost is reduced, and stability is high.
Further, still include a power module 11 that sets up on box T's bottom plate 14, power module 11 can provide electric power for whole intellectual detection system device, and power module 11 installs on the bottom plate, because the upper portion space is bigger, makes things convenient for personnel's installation and debugging power module and the power module of being convenient for dispel the heat, has improved intellectual detection system device's adaptability and stability.
Furthermore, the position of the high-speed camera module 4 arranged on the top plate 2 of the box body T is arranged at the upper part of the keyboard backlight module 7 on the push disc 9 entering the box body T, so that focusing is convenient and accurate, the definition of shot pictures is improved, and the detection efficiency is improved; (in the process of image acquisition by mechanical vision detection, the requirement on ambient light is high, when the light irradiated on the keyboard backlight module is dark, the acquired image has a lot of noise points, when the light irradiated on the keyboard backlight module is unstable, the difference of R, G, B values obtained by image acquisition is very large, so that the main function of the lighting module 1 is to provide a stable light source in the box body, and the luminance of the light emitted by the lighting module 1 is calibrated before each test by matching with the luminance sensor 13, and the problem of gray-black images can be effectively avoided by adopting the action sequence of starting the lighting module 1 first and then taking pictures by the high-speed camera module 4) while the lighting module 1 irradiates the inside of the box body T, and the diffuse reflection can be formed at the part of the keyboard backlight module 7 entering the inner pushing tray 9 of the box body T, thereby high-speed camera module 4 can realize shooing the little characteristic of keyboard backlight unit 7, has improved the definition of shooing the photo, improves detection efficiency.
Further, the position of the brightness sensor 13 arranged on the bottom plate 14 of the box T is arranged below the lighting module 1, the brightness sensor 13 transmits the detected brightness data of the light source to the data processing module 12, and the data processing module 12 adjusts the brightness of the light emitted by the lighting module according to the brightness data, so that the brightness in the box meets the requirement of the keyboard backlight module 7 for mechanical vision detection; the brightness sensor 13 is arranged below the lighting module 1, so that the accuracy of detecting the brightness of the lighting module by the brightness sensor can be improved, and the detection efficiency is finally improved.
Furthermore, a touch display screen module 6 is arranged on the front plate 5 of the box body T, and the touch display screen module 6 is connected with the data processing module 12; an operator can carry out various settings on the intelligent detection device through the touch display module, and the touch display screen module can display the final test result; touch display screen module and opening setting are in one side, and touch control's mode is convenient to be operated, and the demonstration result is also very convenient clear moreover.
The application discloses keyboard backlight unit's intellectual detection system device based on count analysis discernment includes:
the intelligent detection device is a box body with six surfaces, an opening is arranged on one side, close to the bottom plate, of the front plate of the box body, the shape of the opening is adaptive to the shape of the push disc, and the shape of the opening enables the keyboard backlight module placed on the push disc to enter the box body; a data processing module and a brightness sensor are arranged on the bottom plate of the box body, a lighting module and a high-speed camera module are arranged on the top plate of the box body, wherein,
the illumination module is used for illuminating to enable the brightness in the box body to meet the requirement of the keyboard backlight module to be tested on mechanical vision detection;
the high-speed camera module is used for shooting the keyboard backlight module to be tested and transmitting the shot picture data to the data processing module;
the data processing module is used for driving LED lamp beads on the backlight module of the keyboard to be tested to emit light with preset colors after controlling the lighting module to be started, and analyzing and processing the received picture data shot by the high-speed camera module, wherein, based on the graying treatment, the binarization treatment is carried out to the acquired picture data, the coordinate point of the gray value data peak value in the picture data is judged, so as to obtain the coordinates of each LED lamp bead of the keyboard backlight module to be tested in the shot picture data, then, the light rays with preset colors emitted by the LED lamp beads on the keyboard backlight module to be tested in the obtained picture data are scanned and counted in sequence, and judging whether the backlight module of the keyboard to be detected is qualified or not by judging whether all the light rays with preset colors sent by all the LED lamp beads on the backlight module of the keyboard to be detected are equal to the preset total number or not, and finishing the detection of the backlight module of the keyboard to be detected.
Specifically, the intelligent detection device of the present invention comprises: the system comprises an illumination module 1, a top plate 2, a left side plate 3, a high-speed camera module 4, a front plate 5, a touch display screen module 6, a keyboard backlight module 7, a keyboard backlight module connector 8, a push disc 9, a back plate 10, a power supply module 11, a data processing module 12, a brightness sensor 13, a bottom plate 14, a right side plate 15, a right slide rail 16 and a left slide rail 17; the left slide rail 17 and the right slide rail 16 are fixedly arranged on the bottom plate 14; the push disc 9 is arranged on the left slide rail 17 and the right slide rail 16, and the push disc 9 can move relative to the left slide rail 17 and the right slide rail 16; the keyboard backlight module connector 8 is arranged on the push disc 9; the keyboard backlight module 7 is placed on the push disc 9 and is fixed through the keyboard backlight module connector 8; the power supply module 11, the data processing module 12 and the brightness sensor 13 are arranged on the bottom plate 14; the brightness sensor 13 is arranged below the lighting module 1; the left side plate 3 and the right side plate 15 are fixedly arranged on the two side edges of the bottom plate 14 to be used as a left wall and a right wall; the front plate 5 and the back plate 10 are fixedly arranged on the front and back side edges of the bottom plate 14 to be used as a front wall and a back wall; the top plate 2 is fixedly arranged on the back plate 10, the front plate 5, the left side plate 17 and the right side plate 15; the top plate 2, the bottom plate 14, the left side plate 17, the right side plate 15, the front plate 5 and the back plate 10 form a box body; the lighting module 1 and the high-speed camera module 4 are arranged on the top plate 2; the high-speed camera module 4 is positioned above the left slide rail 17 and the right slide rail 16; the touch display 6 is mounted on the front plate 5; the lighting module 1, the high-speed camera module 4, the touch display screen module 6, the keyboard backlight module 7, the keyboard backlight module connector 8, the power module 11, the data processing module 12 and the brightness sensor 13 are electrically connected.
The application discloses keyboard backlight unit's intelligent detection device's based on machine vision's workflow is as follows: the keyboard backlight module 7 to be tested is fixed on the push disc 9 through a keyboard backlight module connector 8, and the keyboard backlight module connector 8 is connected to the data processing module 12 through a signal line; the push tray 9 is pushed into a box body formed by the top plate 2, the bottom plate 14, the left side plate 17, the right side plate 15, the front plate 5 and the back plate 10 along the left guide rail 17 and the right guide rail 16; after an operator issues a test instruction through the touch display module 6, the data processing module 12 controls the lighting module 1 to be started, and a constant light source is provided in the box body; the brightness sensor 13 transmits the detected brightness data to the data processing module 12, and the data processing module 12 adjusts the brightness of the light emitted by the illumination module according to the brightness value, so that the brightness in the box body meets the requirement of the keyboard backlight module 7 on mechanical vision detection; after the brightness in the box is stable, the data processing module 12 drives the LED lamp on the keyboard backlight module 7 to be tested to emit specific color and brightness; the high-speed camera module 4 shoots the light-emitting effect of the keyboard backlight module 7 to be tested and transmits data to the data processing module 12; the data processing module 12 obtains the test result of the keyboard backlight module 7 by analyzing the data returned by the high-speed camera module 4, and displays the test result on the touch display module 6 to complete the detection of the keyboard backlight module 7.
In the present application, each preferred embodiment is described with emphasis on different from other preferred embodiments, each preferred embodiment can be arbitrarily combined as long as there is no conflict, embodiments formed by combination are also within the scope disclosed in the present specification, and in view of the conciseness of the text, the embodiments formed by combination are not separately described herein.
The above description is only an example of the present application and is not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.
In the present specification, the respective preferred embodiments are only described with emphasis on differences from other preferred embodiments, and the respective preferred embodiments may be arbitrarily combined as long as they do not conflict with each other, and the embodiments formed by combining are also within the scope disclosed in the present specification, and in view of the brevity of the text, the embodiments formed by combining are not separately described herein.
The above description is only an example of the present application and is not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.
Claims (10)
1. The utility model provides a keyboard backlight unit's intelligent detection method based on count analysis discernment which characterized in that includes:
the method comprises the following steps that a keyboard backlight module to be detected placed on a push disc enters a box body of an intelligent detection device, wherein the intelligent detection device is provided with a box body with six sides, an opening is formed in one side, close to a bottom plate, of a front plate of the box body, the shape of the opening is adaptive to the shape of the push disc, and the keyboard backlight module placed on the push disc can enter the box body through the shape of the opening; a data processing module is arranged on the bottom plate of the box body, and a lighting module and a high-speed camera module are arranged on the top plate of the box body;
after the data processing module controls the lighting module to be started, the brightness in the box body meets the requirement of the keyboard backlight module to be tested on mechanical vision detection;
after the data processing module drives LED lamp beads on the keyboard backlight module to be tested to emit light rays with preset colors, the high-speed camera module shoots the keyboard backlight module to be tested and transmits shot picture data to the data processing module;
the data processing module carries out binarization processing on the acquired picture data based on graying processing, judges a coordinate point where a gray value data peak value appears in the picture data, obtains coordinates of each LED lamp bead of the keyboard backlight module to be detected in the shot picture data, then respectively scans and counts light rays with each preset color sent by the LED lamp beads on the keyboard backlight module to be detected in the acquired shot picture data in sequence, judges whether the keyboard backlight module to be detected is qualified or not by judging whether the light rays with all preset colors sent by all the LED lamp beads on the keyboard backlight module to be detected are equal to a preset total number or not, and completes detection of the keyboard backlight module to be detected.
2. The method of claim 1, further comprising: a brightness sensor is also arranged on the bottom plate of the box body;
after data processing module control lighting module opened, make luminance in the box satisfy the step that keyboard backlight unit carries out the requirement of mechanical vision detection, include:
after the data processing module controls the lighting module to be started, the brightness sensor transmits the brightness data which is detected by the lighting module to the data processing module; and after the data processing module calculates according to the obtained brightness data, the brightness value of the light emitted by the illumination module is adjusted, so that the brightness in the box body meets the requirement of the keyboard backlight module on mechanical vision detection.
3. The method of claim 2,
after LED lamp pearl sent the light of predetermineeing the colour on the keyboard backlight unit that awaits measuring of data processing module drive, high-speed camera module shoots keyboard backlight unit that awaits measuring to with the step of picture data transmission to data processing module of shooing, include:
the LED lamp beads on the keyboard backlight module to be tested are grouped, wherein the grouping strategy is as follows: the LED lamp beads are divided into a group A and a group B, wherein two adjacent LED lamp beads are divided into different groups, namely the middle of 2 adjacent LED lamp beads in the group A is 1 LED lamp bead in the group B, and similarly, the middle of 2 adjacent LED lamp beads in the group B is 1 LED lamp bead in the group A;
the data processing module drives the LED lamp beads in the group A on the backlight module of the keyboard to be tested to emit light rays with preset colors, and after the LED lamp beads in the group B are turned off, the high-speed camera module shoots the backlight module of the keyboard to be tested; wherein, the last LED lamp pearl of keyboard backlight unit that awaits measuring sends the light of predetermineeing the colour and includes: red, green and blue light;
the data processing module drives the B groups of LED lamp beads on the keyboard backlight module to be tested to emit light rays with preset colors, and after the A groups of LED lamp beads are closed, the high-speed camera module shoots the keyboard backlight module to be tested; wherein, the last LED lamp pearl of keyboard backlight unit that awaits measuring sends the light of predetermineeing the colour and includes: red, green and blue light.
4. The method of claim 3,
the data processing module carries out binarization processing on the acquired picture data based on graying processing, and judges a coordinate point where a gray value data peak value appears in the picture data so as to obtain the coordinates of each LED lamp bead of the keyboard backlight module to be detected in the shot picture data, and the data processing module comprises the following steps:
the data processing module obtains coordinate values of the group A of LED lamp beads in the obtained picture, wherein the data processing module drives all red lamps, green lamps and blue lamps in the group A of LED lamp beads to be turned on, the high-speed camera module collects images of the keyboard backlight module to be tested once to obtain 320 x 240 pixel point data, the collected pixel point data respectively comprise brightness values of red R (i, j), green G (i, j) and blue B (i, j), and the obtained picture data is subjected to graying processing by adopting a weighted average method, and the specific formula is as follows:
Gray(i,j)＝0.299×R(i,j)+0.578×G(i,j)+0.114×B(i,j)；
the data processing module traverses the image Gray value data of all the pixel points, compares the Gray value Gray (i, j) of the pixel point with the Gray values of 48 pixel points around the pixel point, and judges that if the Gray value of the pixel point is the maximum value of the Gray values in 49 pixel points and is greater than 100, the Gray value of the pixel point is set to be 255, otherwise, the Gray value is set to be 0; after traversing all the pixel point gray value data in the acquired picture, the pixel point coordinate finally marked as 255 is the central coordinate of each LED lamp bead of the keyboard backlight module to be detected in the acquired picture.
5. The method of claim 4, wherein the step of determining the target position is performed by a computer
The data processing module respectively to waiting in the picture data of acquireing the shooting to await measuring in the keyboard backlight unit that awaits measuring light that LED lamp pearl sent respectively predetermine the colour and scan the count in proper order, through judging whether all the light of predetermineeing the colour that all LED lamp pearls sent on the keyboard backlight unit that awaits measuring were all equal to predetermine the total number, judge whether the keyboard backlight unit that awaits measuring is qualified, accomplish the step of the detection of the keyboard backlight unit that awaits measuring, include:
the data processing module calculates the quantity of light sources with different colors after obtaining the central coordinates of all LED lamp beads of the keyboard backlight module to be tested in the shot picture data, wherein the data processing module drives all red lamps in all LED lamp beads of the group A on the keyboard backlight module to be tested to be turned on, and after turning off the green lamps and the blue lamps, the high-speed camera module carries out image acquisition on the keyboard backlight module once to obtain the picture data and send the picture data to the data processing module, judges the light source central pixel point data of the marked LED lamp beads, and if the central coordinates satisfy R (i, j)>160，G(i,j)<80 and B (i, j)<80, the number of red light emitting lamps is RAcountAdding 1 to count the A groups of luminous red lamps to obtain the quantity R of the A groups of luminous red lampsAcount(ii) a Similarly, the counting of the group A of the green light-emitting lamps is completed according to the mode to obtain the number G of the group A of the green light-emitting lampsAcountAnd the number B of the group A of the luminous blue lamps is obtained after the group A of the luminous blue lamps is countedAcount；
The data processing module finishes the luminous red light R of the group A of LED lamp beadsBcountGreen light GBcountAnd a light-emitting blue lamp BBcountAfter calculation, the same reasoning can be inferred, and the luminous red light R of the group B of LED lamp beads is subjected to the above-mentioned modeBcountGreen light GBcountAnd a light-emitting blue lamp BBcountCounting is carried out;
the data processing module group comprises a group A and a group B of light-emitting red lamps (R)count＝RAcount+RBcount)Green light (G)count＝GAcount+GBcount)And a luminous blue lamp (B)count＝BAcount+BBcount)The number is summed separately, and if R is satisfied, the number is judgedcount＝Gcount＝BcountIf the total number is preset, all the red lamps, the green lamps and the blue lamps on all the LED lamp beads on the keyboard backlight module are judged to be normal, namely, the product is qualified, and if not, the product is judged to be unqualified.
6. The utility model provides a keyboard backlight unit's intellectual detection system device based on count analysis discernment which characterized in that includes:
the intelligent detection device is a box body with six surfaces, an opening is arranged on one side, close to the bottom plate, of the front plate of the box body, the shape of the opening is adaptive to the shape of the push disc, and the shape of the opening enables the keyboard backlight module placed on the push disc to enter the box body; a data processing module is arranged on the bottom plate of the box body, a lighting module and a high-speed camera module are arranged on the top plate of the box body, wherein,
the illumination module is used for illuminating to enable the brightness in the box body to meet the requirement of the keyboard backlight module to be tested on mechanical vision detection;
the high-speed camera module is used for shooting the keyboard backlight module to be tested and transmitting the shot picture data to the data processing module;
the data processing module is used for driving LED lamp beads on the backlight module of the keyboard to be tested to emit light with preset colors after controlling the lighting module to be started, and analyzing and processing the received picture data shot by the high-speed camera module, wherein, based on the graying treatment, the binarization treatment is carried out to the acquired picture data, the coordinate point of the gray value data peak value in the picture data is judged, so as to obtain the coordinates of each LED lamp bead of the keyboard backlight module to be tested in the shot picture data, then, the light rays with preset colors emitted by the LED lamp beads on the keyboard backlight module to be tested in the obtained picture data are scanned and counted in sequence, and judging whether the backlight module of the keyboard to be detected is qualified or not by judging whether all the light rays with preset colors sent by all the LED lamp beads on the backlight module of the keyboard to be detected are equal to the preset total number or not, and finishing the detection of the backlight module of the keyboard to be detected.
7. The apparatus of claim 6,
a brightness sensor is also arranged on the bottom plate of the box body; the brightness sensor is used for transmitting the brightness data of the detected light emitting of the lighting module to the data processing module after the lighting module is started;
and the data processing module is also used for adjusting the luminous brightness value of the illumination module after calculation according to the obtained brightness data, so that the brightness in the box body meets the requirement of the keyboard backlight module on mechanical vision detection.
8. The apparatus of claim 7, comprising:
after LED lamp pearl sent the light of predetermineeing the colour on the keyboard backlight unit that awaits measuring of data processing module drive, high-speed camera module shoots keyboard backlight unit that awaits measuring to with the picture data transmission who shoots to data processing module, specifically indicate:
the LED lamp beads on the keyboard backlight module to be tested are grouped, wherein the grouping strategy is as follows: the LED lamp beads are divided into a group A and a group B, wherein two adjacent LED lamp beads are divided into different groups, namely the middle of 2 adjacent LED lamp beads in the group A is 1 LED lamp bead in the group B, and similarly, the middle of 2 adjacent LED lamp beads in the group B is 1 LED lamp bead in the group A;
the data processing module drives the LED lamp beads in the group A on the backlight module of the keyboard to be tested to emit light rays with preset colors, and after the LED lamp beads in the group B are turned off, the high-speed camera module shoots the backlight module of the keyboard to be tested; wherein, the last LED lamp pearl of keyboard backlight unit that awaits measuring sends the light of predetermineeing the colour and includes: red, green and blue light;
the data processing module drives the B groups of LED lamp beads on the keyboard backlight module to be tested to emit light rays with preset colors, and after the A groups of LED lamp beads are closed, the high-speed camera module shoots the keyboard backlight module to be tested; wherein, the last LED lamp pearl of keyboard backlight unit that awaits measuring sends the light of predetermineeing the colour and includes: red, green and blue light.
9. The apparatus of claim 8,
the data processing module carries out binarization processing on the acquired picture data based on graying processing, and judges a coordinate point where a gray value data peak value appears in the picture data so as to obtain the coordinate of each LED lamp bead of the keyboard backlight module to be detected in the shot picture data, and specifically means that:
the data processing module obtains coordinate values of the group A of LED lamp beads in the obtained picture, wherein the data processing module drives all red lamps, green lamps and blue lamps in the group A of LED lamp beads to be turned on, the high-speed camera module collects images of the keyboard backlight module to be tested once to obtain 320 x 240 pixel point data, the collected pixel point data respectively comprise brightness values of red R (i, j), green G (i, j) and blue B (i, j), and the obtained picture data is subjected to graying processing by adopting a weighted average method, and the specific formula is as follows:
Gray(i,j)＝0.299×R(i,j)+0.578×G(i,j)+0.114×B(i,j)；
the data processing module traverses the image Gray value data of all the pixel points, compares the Gray value Gray (i, j) of the pixel point with the Gray values of 48 pixel points around the pixel point, and judges that if the Gray value of the pixel point is the maximum value of the Gray values in 49 pixel points and is greater than 100, the Gray value of the pixel point is set to be 255, otherwise, the Gray value is set to be 0; after traversing all the pixel point gray value data in the acquired picture, the pixel point coordinate finally marked as 255 is the central coordinate of each LED lamp bead of the keyboard backlight module to be detected in the acquired picture.
10. The apparatus of claim 9,
the data processing module respectively to waiting in the picture data of acquireing the shooting to await measuring in the keyboard backlight unit that awaits measuring light that LED lamp pearl sent respectively predetermine the colour and scan the count in proper order, through judging whether all the light of predetermineeing the colour that all LED lamp pearls sent on the keyboard backlight unit that awaits measuring were all equal to predetermine the total number, judge whether the keyboard backlight unit that awaits measuring is qualified, accomplish the detection of the keyboard backlight unit that awaits measuring, specifically indicate:
the data processing module calculates the quantity of light sources with different colors after obtaining the central coordinates of all LED lamp beads of the keyboard backlight module to be detected in the shot picture data, wherein the data processing module drives all red lamps in all LED lamp beads of the group A on the keyboard backlight module to be detected to be turned on, and after turning off the green lamps and the blue lamps, the high-speed camera module carries out image acquisition on the keyboard backlight module once to obtain the picture data and send the picture data to the data processing module, and the light source center of the marked LED lamp beads is judgedPixel point data if R (i, j) is satisfied>160，G(i,j)<80 and B (i, j)<80, the number of red light emitting lamps is RAcountAdding 1 to count the A groups of luminous red lamps to obtain the quantity R of the A groups of luminous red lampsAcount(ii) a Similarly, the counting of the group A of the green light-emitting lamps is completed according to the mode to obtain the number G of the group A of the green light-emitting lampsAcountAnd the number B of the group A of the luminous blue lamps is obtained after the group A of the luminous blue lamps is countedAcount；
The data processing module finishes the luminous red light R of the group A of LED lamp beadsBcountGreen light GBcountAnd a light-emitting blue lamp BBcountAfter calculation, the same reasoning can be inferred, and the luminous red light R of the group B of LED lamp beads is subjected to the above-mentioned modeBcountGreen light GBcountAnd a light-emitting blue lamp BBcountCounting is carried out;
the data processing module group comprises a group A and a group B of light-emitting red lamps (R)count＝RAcount+RBcount)Green light (G)count＝GAcount+GBcount)And a luminous blue lamp (B)count＝BAcount+BBcount)The number is summed separately, and if R is satisfied, the number is judgedcount＝Gcount＝BcountIf the total number is preset, all the red lamps, the green lamps and the blue lamps on all the LED lamp beads on the keyboard backlight module are judged to be normal, namely, the product is qualified, and if not, the product is judged to be unqualified.
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Application publication date: 20200929 |