Machine vision stroboscopic light source controller
Technical field
The utility model relates to the field of illumination systems of machine vision, is specifically related to a kind of can regulate brightness of illumination in real time and trigger camera exposure, extend LED light source service life, improve the machine vision stroboscopic light source controller of vision system operating efficiency.
Background technology
Machine vision technique, is a cross discipline relating to the numerous areas such as artificial intelligence, Neurobiology, psychophysics, computer science, image procossing, pattern-recognition, is a part indispensable in present intelligence manufacture industry.One typical machine vision applications system includes light source, optical system, image capturing system, Digital Image Processing, intelligent decision system and Machinery Control System composition.Machine vision mainly simulates the visual performance of people with computer, from the image of objective things extract information, carry out processing and being understood, eventually for actually detected, measure and control.Under suitable illumination condition, camera shooting object, the optical signalling of object is converted into the signal of telecommunication, after being converted into data signal by image capturing system, delivering to image processing system process, extract the characterization information such as the color of object, brightness, intelligent decision system is mated with pre-conditioned by these information, judging, Machinery Control System controls the action of executing agency according to judged result.During such a, the quality of illuminator directly influences the complicated and simple degree of image processing system extraction target signature information, and the radiation response often improving illuminator just can make the efficiency of whole vision system be greatly improved, play a multiplier role.
Current vision light source controller the most all uses permanent bright illumination, but along with the continuous innovation of image processing techniques, the requirement to illumination is more and more higher, and the design of light source is more and more varied, and so, also the design to light source controller proposes new demand.
Utility model content
Technical problem to be solved in the utility model is for the above-mentioned problems in the prior art, provide the machine vision stroboscopic light source controller of 2 popular line light sources of a kind of compatibility, the illuminator including multiple LED module is coordinated to use, LED module can be lighted according to various combination, by changing duty cycle adjustment brightness of illumination and time, and under each illumination brightness levels, trigger that camera takes pictures novel, can preferably reduce whole object according to the requirement of application scenarios.
For solving the problems referred to above, a kind of technical scheme of the present utility model is:
The utility model machine vision stroboscopic light source controller, including main controller module and pilot controller module;Described main controller module includes master microprocessor, telecommunication circuit, metal-oxide-semiconductor drive circuit, triggers circuit;Described pilot controller module includes support microprocessor, accumulator, LED drive circuit;Described master microprocessor is connected with telecommunication circuit, described master microprocessor is by the support microprocessor described in described metal-oxide-semiconductor drive circuit and accumulator connection, the described LED drive circuit described in support microprocessor connection, described master microprocessor connects triggering circuit.
Preferably, described main controller module is embedded in industrial computer.
Preferably, described pilot controller Module-embedding is in light-source system.
Preferably, described master microprocessor is connected with described telecommunication circuit, uses serial communication.
The utility model compared with prior art, possesses following advantage:
The utility model machine vision stroboscopic light source controller, it is divided into main controller module and pilot controller module two parts, main controller module is embedded in industrial computer, and pilot controller Module-embedding is in light-source system, and the most separate effect is for compatible 2 popular line light sources.Host computer sends instruction by serial ports, is converted to, through described telecommunication circuit, the level signal that master microprocessor can identify;Owing to ordinary light source system only has 2 lines to access main controller module system, must complete to combine the powered lighting of identification and the LED module lighting LED module signal by pilot controller module, so after main controller module receives instruction, power first to the energy-storage travelling wave tube of pilot controller module, ensure that its working time at least can maintain 500ms, then according to the instruction of host computer controls requirement, send signal, LED drive circuit described in conducting, and LED module does not access circuit;Pilot controller module receives the control signal that main controller module sends, and according to controlling requirement, is combined by LED module, accesses and starts illumination in circuit;In each LED module lighting process, main controller module sends control signal, turns on trigger module, and camera exposes successively according to the order of lighting of LED module.
Accompanying drawing explanation
Fig. 1 is module frame chart of the present utility model.
Shown in figure 1, telecommunication circuit, 2, master microprocessor, 3, trigger circuit, 4, metal-oxide-semiconductor drive circuit, 5, accumulator, 6, support microprocessor, 7, LED drive circuit.
Detailed description of the invention
Further describe the utility model below in conjunction with the accompanying drawings with embodiment, but protection domain of the present utility model is not limited to this.
With reference to Fig. 1, the utility model machine vision stroboscopic light source controller, including main controller module and pilot controller module;Described main controller module includes master microprocessor 2, telecommunication circuit 1, metal-oxide-semiconductor drive circuit 4, triggers circuit 3;Described pilot controller module includes support microprocessor 6, accumulator 5, LED drive circuit 7;Described master microprocessor 2 is connected with telecommunication circuit 1, described master microprocessor 2 connects described support microprocessor 6 by described metal-oxide-semiconductor drive circuit 4 and accumulator 5, described support microprocessor 6 connects described LED drive circuit 7, and described master microprocessor 2 connects triggering circuit 3.Described main controller module is embedded in industrial computer.Described pilot controller Module-embedding is in light-source system.Described master microprocessor 2 is connected with described telecommunication circuit 1, uses serial communication.
Embodiment one.Described master microprocessor 2, by described telecommunication circuit 1 and host computer communication, receives the control instruction of host computer, and this control instruction comprises lighting sequence and the lighting hours of 16 parts of LED modules;Described master microprocessor 2 complete with the communication of host computer after, begin to turn on metal-oxide-semiconductor drive circuit 4 a period of time, allow the energy storage of described accumulator 5, make described support microprocessor 6 can obtain electric energy from described accumulator 5, and steady operation at least 500ms can be maintained, the most described master microprocessor 2 turns on described metal-oxide-semiconductor drive circuit 4 according to certain timing requirements, form protocol signal transmission to described support microprocessor 6, described support microprocessor 6 resolves this protocol signal, LED drive circuit 7 is driven according to the requirement of control signal, the a certain LED module specified is accessed in circuit;Master microprocessor 2 is according to the requirement of lighting hours afterwards, turns on the time of described metal-oxide-semiconductor drive circuit 4 regulation, completes the illumination of LED;Meanwhile, during LED illumination, described master microprocessor 2 triggers described triggering circuit 3, completes the exposure of camera;With this step, light the LED module in control instruction successively, complete exposure during different LED module illumination.
Below only most preferred embodiment of the present utility model is described, but is not to be construed as limitations on claims.The utility model is not limited only to above example, and all various changes made in the protection domain of the utility model independent claims are all in protection domain of the present utility model.