CN104968094A - Machine vision system and light source controller thereof - Google Patents
Machine vision system and light source controller thereof Download PDFInfo
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- CN104968094A CN104968094A CN201510326057.5A CN201510326057A CN104968094A CN 104968094 A CN104968094 A CN 104968094A CN 201510326057 A CN201510326057 A CN 201510326057A CN 104968094 A CN104968094 A CN 104968094A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
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Abstract
The present invention discloses a machine vision system and a light source controller thereof. The light source controller comprises: a trigger module used for receiving setting information of a light-emitting mode inputted by a user, wherein the light-emitting mode comprises color identification; a storage module used for storing the setting information of the light-emitting mode inputted by the user; an MCU used for calculating and outputting three PWM signals corresponding to the light-emitting mode according to a three primary colors light mixing principle when receiving the setting information of the light-emitting mode; and three BUCK converters respectively used for outputting a corresponding voltage to a light source with the corresponding color according to one PWM signal outputted by the MCU. Through adoption of the technical scheme of the present invention, in a light modulation process, an operator who does not know optical knowledge still can perform light modulation, and the operation is simple. In addition, stroboflash cannot occur, thereby solving the problems of color transformation and scintillation occurring during shooting of a camera in a machine vision system.
Description
Technical field
The present invention relates to lighting field, particularly relate to a kind of Vision Builder for Automated Inspection and light source controller thereof.
Background technology
Vision Builder for Automated Inspection is technology modules important in manufacturing industry, is widely used in the occasions such as the measurement of product, location, quality inspection.Vision Builder for Automated Inspection utilizes machine to replace human eye measure and judge, namely by plant equipment, imaging is carried out to target product, and imaging is converted to digital signal sends image processing system to, image processing system carries out Algorithm Analysis to these digital signals again, realizes Automated condtrol.Light source control technology is as one of key technology in machine vision applications, and it directly can affect picture quality and the effect of Vision Builder for Automated Inspection to a great extent.Such as, red light source is applicable to identifying the material of chip surface cyan and grey, and blue light is applicable to the material yellow and golden to chip surface and identifies.
Separate for each passage of the light source controller of Vision Builder for Automated Inspection at present, when needing the light source of particular color, client is needed to regulate respectively to carry out colour mixture to the brightness of each passage, complicated operation, and need tester to grasp certain optical knowledge, realize difficulty larger.In addition, when carrying out colour mixture, employing be PWM dimming mode, this mode makes the voltage exporting light source to be discontinuous in time, so the light-source brightness that Different periods photographs in the shooting process of camera high speed and color are different, just there will be stroboscopic.
Summary of the invention
The technical problem to be solved in the present invention is, for the above-mentioned defect of prior art, provides a kind of light modulation simple and there will not be Vision Builder for Automated Inspection and the light source controller thereof of stroboscopic.
The technical solution adopted for the present invention to solve the technical problems is: construct a kind of light source controller, and for controlling the luminescence of light supply apparatus, described light supply apparatus comprises red light source, green light source and blue-light source, and described light source controller comprises:
Trigger module, for receiving the configuration information of the light-emitting mode of user's input, described light-emitting mode comprises colour code;
Memory module, for storing the configuration information of the light-emitting mode of user's input;
MCU, for when receiving the configuration information of light-emitting mode, calculating according to three primary colors mixed light principle and exporting three road pwm signals corresponding to described light-emitting mode;
Three BUCK converters, are respectively used to the road pwm signal that exports according to described MCU and export corresponding voltage to the light source of respective color.
In light source controller of the present invention, described light-emitting mode also comprises brightness mark.
In light source controller of the present invention, described light supply apparatus also comprises white light source, and described light source controller also comprises the 4th BUCK converter; And,
Described light-emitting mode also comprises saturation mark;
Described MCU, also for calculating according to three primary colors mixed light principle and exporting four road pwm signals corresponding to described light-emitting mode;
Four BUCK converters, are respectively used to the road pwm signal that exports according to described MCU and export corresponding voltage to the light source of respective color.
In light source controller of the present invention,
Described MCU, the voltage also for exporting four BUCK converters is sampled, and four sampled road magnitudes of voltage and current light-emitting mode is identified and bind, and sends into described memory module and store.
In light source controller of the present invention,
Described trigger module, also for receiving the call instruction of the light-emitting mode of user's input;
Described MCU, also for when receiving the call instruction of light-emitting mode, calculating according to three primary colors mixed light principle and exporting four road pwm signals corresponding to described light-emitting mode; And the current voltage also for exporting four BUCK converters is sampled, and four sampled road magnitudes of voltage are contrasted to four road magnitudes of voltage corresponding to stored corresponding light-emitting mode, and judge whether to occur extremely according to comparing result.
In light source controller of the present invention,
Described trigger module, also for receiving the Time delay time of user's input and trigger sign under trigger mode;
Described MCU, also for starting to export the pwm signal corresponding to described light-emitting mode when receiving and triggering sign under trigger mode, and exports the corresponding time according to described Time delay time remaining.
In light source controller of the present invention, described trigger module comprises at least one button be connected with described MCU by GPIO mouth.
In light source controller of the present invention, described trigger module comprises the control panel be connected with described MCU by GPIO mouth.
In light source controller of the present invention, described trigger module comprises the UART mouth carrying out with host computer communicating.
The present invention also constructs a kind of Vision Builder for Automated Inspection, comprises the light source controller described in above any one.
Implement technical scheme of the present invention, when user needs the light source of particular color, only need input corresponding colour code, MCU automatically can calculate according to three primary colors mixed light principle and export this color of object mark corresponding tri-road pwm signal, then, three BUCK converters just can export corresponding voltage according to corresponding pwm signal to the light source of respective color, and the red, green, blue three-color light source in light supply apparatus carries out coloured light additive color mixture, thus makes this light supply apparatus send the light of color of object.Therefore, in dimming process, even if operating personnel do not understand that optical knowledge also can carry out light modulation, simple to operate.And, because the pwm signal exported MCU carries out BUCK conversion, make the voltage exporting light source to be continuous print in time, there will not be stroboscopic, solve the problem of the colour switching flicker that in Vision Builder for Automated Inspection, camera shooting can produce.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described, in accompanying drawing:
Fig. 1 is the logic diagram of light source controller of the present invention and light supply apparatus embodiment one;
Fig. 2 is the logic diagram of light source controller of the present invention and light supply apparatus embodiment two.
Embodiment
Fig. 1 is the logic diagram of light source controller of the present invention and light supply apparatus embodiment one, and in this embodiment, light supply apparatus 200 comprises red light source 51, green light source 52 and blue-light source 53.Light source controller 100 is for controlling the luminescence of light supply apparatus 200, and it specifically comprises MCU10, trigger module 20, memory module 30 and a BUCK converter 41, the 2nd BUCK converter 42, the 3rd BUCK converter 43.Wherein, memory module 30 can be built-in or be external in MCU10.In the light source controller 100 of this embodiment, trigger module 20 is for receiving the configuration information of the light-emitting mode of user's input, and this light-emitting mode such as comprises colour code, and colour code is such as color code; Memory module 30 is for storing the configuration information of the light-emitting mode of user's input; MCU10 is used for when receiving the configuration information of light-emitting mode, calculates and export three road pwm signals corresponding to this light-emitting mode according to three primary colors mixed light principle; One BUCK converter 41 exports corresponding voltage for the first via pwm signal exported according to MCU10 to red light source, 2nd BUCK converter 42 exports corresponding voltage for the second road pwm signal exported according to MCU10 to green light source, and the 3rd road pwm signal that the 3rd BUCK converter 43 is respectively used to export according to MCU10 exports corresponding voltage to blue-light source.Implement the technical scheme of this embodiment, when user needs the light source of particular color, only need input corresponding colour code, MCU10 automatically can calculate according to three primary colors mixed light principle and export this color of object mark corresponding tri-road pwm signal, then, three BUCK converters 41,42,43 just can export corresponding voltage according to corresponding pwm signal to the light source of respective color, red, green, blue light source 51,52,53 in light supply apparatus 200 carries out coloured light additive color mixture, thus makes this light supply apparatus 200 send the light of color of object.Therefore, in dimming process, even if operating personnel do not understand that optical knowledge also can regulate, simple to operate.And, because the pwm signal exported MCU10 carries out BUCK conversion, make the voltage exporting each light source to be continuous print in time, there will not be stroboscopic, solve the problem of the colour switching flicker that in Vision Builder for Automated Inspection, camera shooting can produce.
Fig. 2 is the logic diagram of light source controller of the present invention and light supply apparatus embodiment two, and this embodiment compares the embodiment one shown in Fig. 1, has following difference:
Light supply apparatus 200 also comprises white light source 54, and light source controller 100 also comprises the 4th BUCK converter 44.In addition, the configuration information of brightness mark and saturation mark is also comprised in the configuration information of light-emitting mode that trigger module 20 receives.And MCU10 is also for calculating according to three primary colors mixed light principle and exporting four road pwm signals corresponding to this light-emitting mode.One BUCK converter 41 exports corresponding voltage for the first via pwm signal exported according to MCU10 to red light source, 2nd BUCK converter 42 exports corresponding voltage for the second road pwm signal exported according to MCU10 to green light source, the 3rd road pwm signal that 3rd BUCK converter 43 is respectively used to export according to MCU10 exports corresponding voltage to blue-light source, and the 4th road pwm signal that the 4th BUCK converter 44 is respectively used to export according to MCU10 exports corresponding voltage to white light source.This embodiment compares the embodiment shown in Fig. 1, and user, when light modulation, except the color of lamp light adjustable, also can carry out the adjustment of brightness and saturation easily.
It should be noted that at this, although user is when using light source controller 100 light modulation of this embodiment, can regulate brightness and saturation simultaneously, but should be understood that in other embodiments, also can only regulate brightness or saturation.
Preferably, in the light source controller 100 of this embodiment, the voltage of MCU10 also for exporting four BUCK converters 41,42,43,44 is sampled, and four sampled road magnitudes of voltage and current light-emitting mode are identified bind, and feeding memory module 30 stores, like this, user can store when often debugging out a kind of light-emitting mode, transfers when using to facilitate next time.
Further, trigger module 20 is also for receiving the call instruction of the light-emitting mode of user's input.And MCU10, also for when receiving the call instruction of light-emitting mode, calculating according to three primary colors mixed light principle and exporting four road pwm signals corresponding to this light-emitting mode; And the current voltage also for exporting four BUCK converters 41,42,43,44 is sampled, and four sampled road magnitudes of voltage are contrasted to four road magnitudes of voltage corresponding to stored corresponding light-emitting mode, and judge whether to occur extremely according to comparing result, such as, if the magnitude of voltage of present sample and the difference of magnitude of voltage stored in preset range, then illustrate generation without exception; If the magnitude of voltage of present sample exceedes preset range with the difference of the magnitude of voltage stored, then illustrative system occurs abnormal.
In addition, this light source controller can be arranged to following two kinds of patterns: normal bright pattern and trigger mode.Under normal bright pattern, when trigger module receives configuration information or the call instruction of light-emitting mode, MCU exports the multi-channel PWM signal corresponding to this light-emitting mode at once; Under trigger mode, trigger module is also for receiving the Time delay time of user's input and triggering sign on, and, the multi-channel PWM signal of MCU also for starting to export corresponding to this light-emitting mode when receiving and triggering sign on, and export the corresponding time according to Time delay time remaining.Preferably, light-emitting mode mark can be bound with the Time delay time by MCU, and is stored in memory module, calls to facilitate next time.Such as, user pre-sets following information:
" trigger port 1 ": export " light-emitting mode identifier 3 (color code 201, brightness 90%) ", Time delay 20ms;
" trigger port 2 ": export " light-emitting mode identifier 1 (color code 156, brightness 50%) ", Time delay 15ms;
" trigger port 3 ": export " light-emitting mode identifier 2 (color code 073, brightness 75%) ", Time delay 25ms.
When user sends the call instruction of " trigger port 2 " by trigger module, and when input triggers sign on, now, it is 156 that MCU can export color code, and brightness is the light of 50%, and closes output after continuing to light 15ms.
In addition, preferably, trigger module can comprise the button that at least one is connected with MCU by GPIO mouth.Trigger module also can comprise the control panel be connected with MCU by GPIO mouth.Trigger module comprises the UART mouth carrying out with host computer communicating.Like this, user is by button and/or control panel and/or the corresponding light-emitting mode of upper computer selecting and under trigger mode, input triggering sign on, such as, select the light-emitting mode of the specific saturation of particular color certain luminance, trigger sign on such as user by serial ports transmission " triggering starts " or trigger interface 2 directly high level or the low level triggering by GPIO.
The present invention also constructs a kind of Vision Builder for Automated Inspection, comprises above-described light source controller.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within right of the present invention.
Claims (10)
1. a light source controller, for controlling the luminescence of light supply apparatus, described light supply apparatus comprises red light source, green light source and blue-light source, it is characterized in that, described light source controller comprises:
Trigger module, for receiving the configuration information of the light-emitting mode of user's input, described light-emitting mode comprises colour code;
Memory module, for storing the configuration information of the light-emitting mode of user's input;
MCU, for when receiving the configuration information of light-emitting mode, calculating according to three primary colors mixed light principle and exporting three road pwm signals corresponding to described light-emitting mode;
Three BUCK converters, are respectively used to the road pwm signal that exports according to described MCU and export corresponding voltage to the light source of respective color.
2. light source controller according to claim 1, is characterized in that, described light-emitting mode also comprises brightness mark.
3. light source controller according to claim 1, is characterized in that, described light supply apparatus also comprises white light source, and described light source controller also comprises the 4th BUCK converter; And,
Described light-emitting mode also comprises saturation mark;
Described MCU, also for calculating according to three primary colors mixed light principle and exporting four road pwm signals corresponding to described light-emitting mode;
Four BUCK converters, are respectively used to the road pwm signal that exports according to described MCU and export corresponding voltage to the light source of respective color.
4. light source controller according to claim 3, is characterized in that,
Described MCU, the voltage also for exporting four BUCK converters is sampled, and four sampled road magnitudes of voltage and current light-emitting mode is identified and bind, and sends into described memory module and store.
5. light source controller according to claim 4, is characterized in that,
Described trigger module, also for receiving the call instruction of the light-emitting mode of user's input;
Described MCU, also for when receiving the call instruction of light-emitting mode, calculating according to three primary colors mixed light principle and exporting four road pwm signals corresponding to described light-emitting mode; And the current voltage also for exporting four BUCK converters is sampled, and four sampled road magnitudes of voltage are contrasted to four road magnitudes of voltage corresponding to stored corresponding light-emitting mode, and judge whether to occur extremely according to comparing result.
6. the light source controller according to any one of claim 1-5, is characterized in that,
Described trigger module, also for receiving the Time delay time of user's input and trigger sign under trigger mode;
Described MCU, also for starting to export the pwm signal corresponding to described light-emitting mode when receiving and triggering sign under trigger mode, and exports the corresponding time according to described Time delay time remaining.
7. light source controller according to claim 1, is characterized in that, described trigger module comprises at least one button be connected with described MCU by GPIO mouth.
8. light source controller according to claim 1, is characterized in that, described trigger module comprises the control panel be connected with described MCU by GPIO mouth.
9. light source controller according to claim 1, is characterized in that, described trigger module comprises the UART mouth carrying out with host computer communicating.
10. a Vision Builder for Automated Inspection, is characterized in that, comprises the light source controller described in any one of claim 1-9.
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| CN106507539A (en) * | 2016-11-24 | 2017-03-15 | 广东工业大学 | A kind of luminous source system |
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| CN101677482A (en) * | 2008-09-17 | 2010-03-24 | 深圳市斯派克光电科技有限公司 | Control circuit of intellectualized LED street lamp |
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Application publication date: 20151007 |