CN204031510U - Light source control device and Vision Builder for Automated Inspection - Google Patents
Light source control device and Vision Builder for Automated Inspection Download PDFInfo
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- CN204031510U CN204031510U CN201420169541.2U CN201420169541U CN204031510U CN 204031510 U CN204031510 U CN 204031510U CN 201420169541 U CN201420169541 U CN 201420169541U CN 204031510 U CN204031510 U CN 204031510U
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Abstract
The utility model proposes a kind of light source control device and Vision Builder for Automated Inspection, this light source control device comprises controller, logical device and LED driver element, described controller is connected with described LED driver element through described logical device, described controller receives user instruction, and send a control signal to described logical device according to user instruction, described logical device is converted to corresponding pwm signal by its inner logical calculated by described control signal, and described pwm signal is sent to described LED driver element, described LED driver element is controlled the operating state of LED light source according to described pwm signal.The utility model has greatly improved the delay precision of LED light source brightness regulation.
Description
Technical field
The utility model relates to field of machine vision, relates in particular to a kind of light source control device and Vision Builder for Automated Inspection.
Background technology
At present, on market, the LED light source control device for field of machine vision mainly adopts three types of technology to carry out the adjusting of LED light source brightness.This three types of technology is respectively simulation light regulating technology, digital PWM light regulating technology and controllable silicon light modulation technology, and simulation light regulating technology power dissipation ratio is larger, and performance is wayward; And the application of controllable silicon light modulation technology is still immature, also there is no spread, so digital PWM light regulating technology is widely used in LED light source control.In field of machine vision, the brightness of LED light source and fluorescent lifetime need to be used in conjunction with video acquisition device (being smart camera), and the time delay that smart camera triggers between the luminous and LED light source brightness regulation of LED light source is a very important index weighing whole Vision Builder for Automated Inspection.But LED light source control device of the prior art, because Time delay precision is inadequate, requires very strict factory and machine shop for LED lightness environment, cannot meet the demand of its high-precision applications.
Utility model content
Main purpose of the present utility model is to provide a kind of light source control device and Vision Builder for Automated Inspection of high accuracy time delay.
In order to achieve the above object, the utility model proposes a kind of light source control device, comprise controller, logical device and LED driver element, wherein:
Described controller is connected with described LED driver element through described logical device, described controller receives user instruction, and send a control signal to described logical device according to user instruction, described logical device is converted to corresponding pwm signal by its inner logical calculated by described control signal, and described pwm signal is sent to described LED driver element, described LED driver element is controlled the operating state of LED light source according to described pwm signal.
Preferably, this light source control device also comprises the collecting device being connected with described logical device, described collecting device sends outer triggering signal to described logical device, described logical device is converted to corresponding synchronizing signal by described outer triggering signal and is sent to described LED driver element, and described LED driver element is controlled synchronousing working of LED light source and described collecting device according to described synchronizing signal.
Preferably, described collecting device is smart camera.
Preferably, described controller is single-chip microcomputer.
Preferably, described logical device is programmable logic device or CPLD.
Preferably, described single-chip microcomputer is connected with computer by RS232 serial ports.
Preferably, described single-chip microcomputer comprises four road A/D sample circuits, for receiving user instruction.
Preferably, described logical device comprises four road pwm signal output ports, for exporting four road pwm signals.
Preferably, described LED driver element comprises single channel LED drive circuit or multi-channel LED drive circuit.
The utility model also proposes a kind of Vision Builder for Automated Inspection, comprises LED light source, and this Vision Builder for Automated Inspection also comprises light source control device as above, and described LED light source is connected with the output of LED driver element in described light source control device.
A kind of light source control device and the Vision Builder for Automated Inspection that the utility model proposes, by controller, receive user instruction, and send a control signal to logical device according to user instruction, by logical device, carry out logical operation, and send pwm signal to LED driver element, to control the brightness of LED light source, because logical device has been born main logical calculated work, greatly improved delay precision, further, the collecting device being connected with logical device sends outer triggering signal to logical device, logical device sends synchronizing signal to LED driver element according to outer triggering signal, to control synchronousing working of LED light source and collecting device, when having improved LED light source brightness regulation delay precision, also greatly improve collecting device and triggered the luminous delay precision of LED light source, realized the accurate control to LED light source.
Accompanying drawing explanation
Fig. 1 is the structured flowchart of the utility model light source control device one embodiment;
Fig. 2 is the structured flowchart of another embodiment of the utility model light source control device.
In order to make the technical solution of the utility model clearer, clear, below in conjunction with accompanying drawing, be described in further detail.
Embodiment
Should be appreciated that specific embodiment described herein is only in order to explain the utility model, and be not used in restriction the utility model.
The utility model provides a kind of light source control device, and with reference to Fig. 1, in one embodiment, this light source control device comprises controller 1, logical device 2 and LED driver element 3, wherein:
Described controller 1 is connected with described LED driver element 3 through described logical device 2, described controller 1 receives user instruction, and send a control signal to described logical device 2 according to user instruction, described logical device 2 is converted to corresponding pwm signal by its inner logical calculated by described control signal, and described pwm signal is sent to described LED driver element 3, described LED driver element 3 is controlled the operating state of LED light source according to described pwm signal.
In the present embodiment, because logical device 2 has been born main logical calculated work, and without carry out logical operation on controller 1,1 of controller needs to receive and analysis user instruction, according to user instruction adjustment and the corresponding parameter of controlling of storage, like this, reduce the time delay that user regulates LED light source brightness, greatly improved delay precision.
With reference to Fig. 2, in another embodiment of the utility model light source control device, this light source control device also comprises the collecting device 4 being connected with described logical device 2, described collecting device 4 sends outer triggering signal to described logical device 2, described logical device 2 is converted to corresponding synchronizing signal by described outer triggering signal and is sent to described LED driver element 3, and described LED driver element 3 is controlled synchronousing working of LED light source and described collecting device 4 according to described synchronizing signal.
Particularly, above-mentioned collecting device 4 is smart camera; Controller 1 is single-chip microcomputer, comprises four road A/D sample circuits on single-chip microcomputer, and for receiving user instruction, single-chip microcomputer is also connected with computer by RS232 serial ports; Logical device 2 is programmable logic device (programmable logic device, be called for short PLD) or CPLD (Complex Programmable Logic Device, be called for short CPLD), in the present embodiment, the logical device 2 of take describes as CPLD as example, on CPLD, comprise four road pwm signal output ports, for exporting four road pwm signals.
In the present embodiment, after powering on, single-chip microcomputer and CPLD carry out initialization, between single-chip microcomputer and CPLD, set up and communicate by letter, single-chip microcomputer receives the instruction of user's input, particularly, and in the present embodiment, single-chip microcomputer receives the instruction of user's input by two kinds of modes below: 1, user inputs different sample voltage value by single-chip microcomputer Shang tetra-road A/D sample circuits, and the sample voltage value that single-chip microcomputer gathers according to A/D sample circuit receives the instruction of user's input; 2, single-chip microcomputer is set up and is communicated by letter with computer by RS232 serial ports, on computers control software can be set, user inputs corresponding instruction by the control software on computer, and computer transfers to single-chip microcomputer by the instruction of reception by RS232 serial ports, thereby makes single-chip microcomputer receive the instruction of user's input.
Single-chip microcomputer receives after the instruction of user's input, instruction to user's input is analyzed, the high low degree that analysis user need regulate LED light source brightness, according to analysis result adjustment, control accordingly parameter again, generate the control signal that CPLD can identify, and the control signal of generation is sent to CPLD; CPLD receives after the control signal of single-chip microcomputer transmission, in CPLD inside, carry out logical operation, the control signal of reception is converted to corresponding PWM(Pulse Width Modulation, pulse width modulation) signal, and pwm signal is sent to LED driver element 3, LED driver element 3 can regulate according to described pwm signal the brightness of LED light source.
It should be noted that, in the present embodiment, CPLD comprises four road pwm signal output ports, be used for exporting four road pwm signals, LED driver element 3 comprises single channel LED drive circuit or multi-channel LED drive circuit, therefore, single-chip microcomputer Shang tetra-road A/D sample circuits can receive four tunnel instructions simultaneously, accordingly, CPLD can pass through Qi Si road pwm signal output port parallel output four road pwm signals to LED driver element 3 according to four tunnel instructions, and single channel LED drive circuit in LED driver element 3 or multi-channel LED drive circuit can be controlled according to Zhe Si road pwm signal the operating state of LED multi-path light source, therefore, CPLD can accomplish that the LED multi-path of parallel control simultaneously light source completely independently carries out work.
Further, the smart camera being connected with CPLD also can send outer triggering signal to CPLD when it is opened, CPLD carries out logical operation according to outer triggering signal, and outer triggering signal is converted to corresponding synchronizing signal is sent to LED driver element 3, LED driver element 3 is controlled synchronousing working of LED light source and smart camera according to described synchronizing signal, like this, LED light source is only just opened after CPLD receives the outer triggering signal of smart camera transmission, avoided it always in normal bright state, improved its useful life, and the delay precision between smart camera triggering LED light source is luminous is very high, can not affect normal work.
The present embodiment receives user instruction by controller 1, and send a control signal to logical device 2 according to user instruction, by logical device 2, carry out logical operation, and send pwm signal to LED driver element 3, to control the brightness of LED light source, because logical device 2 has been born main logical calculated work, greatly improved delay precision, further, the collecting device 4 being connected with logical device 2 sends outer triggering signal to logical device 2, logical device 2 sends synchronizing signal to LED driver element 3 according to outer triggering signal, to control synchronousing working of LED light source and collecting device 4, when having improved LED light source brightness regulation delay precision, also greatly improve collecting device 4 and triggered the luminous delay precision of LED light source, realized the accurate control to LED.
The utility model also proposes a kind of Vision Builder for Automated Inspection, comprise LED light source, this Vision Builder for Automated Inspection also comprises above-mentioned light source control device, and its operation principle as mentioned above, do not repeat them here, described LED light source is connected with the output of LED driver element in described light source control device.Owing to having adopted above-mentioned light source control device, greatly reduce smart camera and triggered the time delay between the luminous and LED light source brightness regulation of LED light source, improve the precision that whole Vision Builder for Automated Inspection regulates LED light source, realized the accurate control to LED light source, very practical reliable.In addition due to integrated led temperature detection in LED driver element and the processing capacity that opens circuit, can be rapidly, accurately LED light source is adjusted, guaranteed that LED light source environment is in real time in stable, safe state, make this Vision Builder for Automated Inspection can be applicable to LED lightness environment to require very strict factory and machine shop, meet the demand of its high-precision applications.
Above-mentioned light source control device and Vision Builder for Automated Inspection, by controller, receive user instruction, and send a control signal to logical device according to user instruction, by logical device, carry out logical operation, and send pwm signal to LED driver element, to control the brightness of LED light source, because logical device has been born main logical calculated work, greatly improved delay precision, further, the collecting device being connected with logical device sends outer triggering signal to logical device, logical device sends synchronizing signal to LED driver element according to outer triggering signal, to control synchronousing working of LED light source and collecting device, when having improved LED light source brightness regulation delay precision, also greatly improve collecting device and triggered the luminous delay precision of LED light source, realized the accurate control to LED light source.
The foregoing is only preferred embodiment of the present utility model; not thereby limit the scope of the claims of the present utility model; every equivalent structure or flow process conversion that utilizes the utility model specification and accompanying drawing content to do; or be directly or indirectly used in other relevant technical field, be all in like manner included in scope of patent protection of the present utility model.
Claims (10)
1. a light source control device, is characterized in that, comprises controller, logical device and LED driver element, wherein:
Described controller is connected with described LED driver element through described logical device, described controller receives user instruction, and send a control signal to described logical device according to user instruction, described logical device is converted to corresponding pwm signal by its inner logical calculated by described control signal, and described pwm signal is sent to described LED driver element, described LED driver element is controlled the operating state of LED light source according to described pwm signal.
2. light source control device according to claim 1, it is characterized in that, also comprise the collecting device being connected with described logical device, described collecting device sends outer triggering signal to described logical device, described logical device is converted to corresponding synchronizing signal by described outer triggering signal and is sent to described LED driver element, and described LED driver element is controlled synchronousing working of LED light source and described collecting device according to described synchronizing signal.
3. light source control device according to claim 2, is characterized in that, described collecting device is smart camera.
4. light source control device according to claim 1, is characterized in that, described controller is single-chip microcomputer.
5. light source control device according to claim 1, is characterized in that, described logical device is programmable logic device or CPLD.
6. light source control device according to claim 4, is characterized in that, described single-chip microcomputer is connected with computer by RS232 serial ports.
7. light source control device according to claim 4, is characterized in that, described single-chip microcomputer comprises four road A/D sample circuits, for receiving user instruction.
8. light source control device according to claim 1, is characterized in that, described logical device comprises four road pwm signal output ports, for exporting four road pwm signals.
9. light source control device according to claim 1, is characterized in that, described LED driver element comprises single channel LED drive circuit or multi-channel LED drive circuit.
10. a Vision Builder for Automated Inspection, comprises LED light source, it is characterized in that, also comprises the light source control device described in any one in claim 1 to 9, and described LED light source is connected with the output of LED driver element in described light source control device.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420169541.2U CN204031510U (en) | 2014-04-09 | 2014-04-09 | Light source control device and Vision Builder for Automated Inspection |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420169541.2U CN204031510U (en) | 2014-04-09 | 2014-04-09 | Light source control device and Vision Builder for Automated Inspection |
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| CN204031510U true CN204031510U (en) | 2014-12-17 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105937734A (en) * | 2016-03-29 | 2016-09-14 | 杭州利珀科技有限公司 | Intelligent light source for machine vision |
| CN109375451A (en) * | 2018-09-25 | 2019-02-22 | 东莞锐视光电科技有限公司 | Light source controller Time delay control method and system |
-
2014
- 2014-04-09 CN CN201420169541.2U patent/CN204031510U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105937734A (en) * | 2016-03-29 | 2016-09-14 | 杭州利珀科技有限公司 | Intelligent light source for machine vision |
| CN109375451A (en) * | 2018-09-25 | 2019-02-22 | 东莞锐视光电科技有限公司 | Light source controller Time delay control method and system |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: 518000 Guangdong province Shenzhen city Longhua District Longhua Street Qing Xiang Lu Qing Hu Bao Industrial Park Science and Technology Park 7 A block 9 building ABCDEF unit Patentee after: Shenzhen Haoxiang Technology Co.,Ltd. Address before: 518000 Guangdong city of Shenzhen province Nanshan District high tech Zone Five New South Road No. 9 gold card technology building 7 room 705 Patentee before: Shenzhen Yingtai Licheng Electronics Co.,Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141217 |