CN202455593U - Vision light source controller for gold ball bonding machine - Google Patents

The utility model discloses a vision light source controller for a gold ball bonding machine. The vision light source controller comprises an interface circuit, an LED (Light Emitting Diode) driving module, a control unit and a power supply module, wherein the control unit is respectively connected with the interface circuit and the LED driving module; the power supply module is connected with each circuit module and is used for supplying voltage to each circuit; a photosensitive signal from the gold ball bonding machine is processed by using a computer or a host controller by the vision light source controller provided by the utility model; after the photosensitive signal is processed, a control signal is transmitted to the control unit through the interface circuit and then the signal is processed; after the control signal is received by the control unit, the LED driving module is driven to control an LED light source on the gold ball bonding machine according to control information, thereby realizing the intelligent computer control on the light source of the gold ball bonding machine; the regulating precision of the LED light source is greatly increased; the identifying effect and speed of a vision system are ensured; and the production precision and production efficiency of the gold ball bonding machine are increased.

Technical field

The utility model relates to a kind of visual light source controller, particularly a kind of gold ball bonding line machine visual light source controller.

Background technology

Gold ball bonding line machine is the collection precision optical machinery; Automatically control, image recognition, optics; The ultrasonic heat pressure welding field such as connects in the modernized high-tech microelectronics Packaging equipment of one, is mainly used in the welding that goes between between operation chips pad and outside framework after LED or the integrated circuit manufacturing.

NI Vision Builder for Automated Inspection is the important component part of gold ball bonding line machine; Light source is the important component part of vision system; Be the key factor that influences gold ball bonding line machine performance, good light source can lay the first stone for the discrimination that improves NI Vision Builder for Automated Inspection, but conventional artificial adjusting light source can not satisfy demand of practical production; In process of production; In order to improve the precision of gold ball bonding line machine, need be according to condition of different and environment quick adjustment light source, and the mode of manual adjustment does not obviously satisfy present production requirement.

The utility model content

For addressing the above problem; The purpose of the utility model is to provide a kind of and is the basis with gold ball bonding line machine; In conjunction with the specific requirement of NI Vision Builder for Automated Inspection, regulate, control a kind of gold ball bonding line machine visual light source controller of light source easily and effectively according to practical condition.

The utility model solves the technical scheme that its problem adopted:

A kind of gold ball bonding line machine visual light source controller, comprise the interface circuit, the LED driver module that is used for drive controlling gold ball bonding line machine vision system led light source that are used to receive from computer or go up the photosensitive control signal that level controller handles, be used for processing control information and with LED driver module control unit in communication and power module; Said control unit links to each other with the LED driver module with interface circuit respectively, and power module and each circuit module are connected to each circuit voltage is provided.

Further; Said interface circuit comprises serial communication interface that communicates with computer and the general input circuit that is used for the expansion control interface, and said serial communication interface links to each other with control unit respectively to the control signal of control unit transmission from computer or last level controller with general input circuit.The utility model adopts serial line interface and the parallel input mode of general input interface, can satisfy the control of multiple systems, makes practicality of the utility model and scalability better.

Further; Said serial communication interface comprises and is used for the serial line interface and the level switch module that are connected with computer; Computer and serial line interface are connected to serial communication interface control signal are provided, and level switch module links to each other with control unit with serial line interface will convert the discernible signal of control unit from the control signal of serial line interface to.Computer provides control signal through serial line interface; But this signal and control unit, particularly programmable logic device are incompatible; Need carry out level conversion, and level switch module can make things convenient for, will convert the discernible signal of control unit from the control signal of serial line interface to effectively.

Further, said LED driver module comprises one or more led drive circuits, and each led drive circuit links to each other with control unit and receives control signal and the corresponding led light source of drive controlling from control unit.Each drive circuit can drive a led light source, and the integrated a plurality of led drive circuits of LED driver module can let a plurality of led light sources of light-source controller controls, can effectively improve the light source controller driving force, have improved the service efficiency of the utility model.

Further, said led drive circuit comprises LED chip for driving and the LED interface that is connected with LED, and the power switch drain terminal of LED chip for driving links to each other with the interface of LED unit through filter circuit.Said LED drives can drive one or plurality of LEDs, thereby but realizes controlled dimming.

Further, said general input interface comprises general-purpose interface and one or more optically coupled circuit, and said optically coupled circuit links to each other with control unit with general-purpose interface respectively.Computer or supervisory controller link to each other with control unit through general-purpose interface, optically coupled circuit; General input circuit adopts optically coupled isolation circuit can effectively reduce the interference that current input signal is made control unit; And can satisfy the interface of different electric flow restriction; Can be for control unit provide stable control signal, its adaptability and practicality are better.

Further, said optically coupled circuit comprises optocoupler, and said optocoupler links to each other with control unit with general-purpose interface respectively., adopt optocoupler to can be control unit stable, effective control signal is provided, be fit to long-term work well and use.

Further, power module comprises switching power source chip, filter circuit, LED driving power interface, circuit power interface and external power interface; Said external power interface links to each other with filter circuit with LED driving power interface, and said switching power source chip links to each other with the circuit power interface with filter circuit respectively.Input voltage is through fuse and TVS pipe; Fuse can prevent overcurrent; The TVS pipe can prevent overvoltage, behind filter capacitor, outputs to LED driving power interface again, for led drive circuit provides driving voltage; Guaranteed the brightness of led light source, input voltage is that interface circuit and control unit provide suitable voltage through connecting circuit power interface after filter circuit and the switching power source chip voltage stabilizing again.

Further, said control unit also comprises a manual driver module, and said manual actuation module links to each other with the manual control interface of programmable logic device.The manual actuation module lets the utility model also possess the ability of manual adjustments led light source, and its adaptability and practicality are better, design more reasonable.

The beneficial effect of the utility model is:

A kind of gold ball bonding line machine visual light source controller that the utility model adopts, comprise the interface circuit, the LED driver module that is used for drive controlling gold ball bonding line machine vision system led light source that are used to receive from computer or go up the photosensitive control signal that level controller handles, be used for processing control information and with LED driver module control unit in communication and power module; Said control unit links to each other with the LED driver module with interface circuit respectively, and power module and each circuit module are connected to each circuit voltage is provided.The utility model adopts computer or goes up level controller and handle the photoreceptor signal from gold ball bonding line machine; Through interface circuit control signal is transferred to the control unit processing signals after treatment; After control unit receives control signal; According to the led light source on the control information driving LED driver module control gold ball bonding line machine, realize the Computerized intelligent control of gold ball bonding line machine light source, improve the control accuracy of led light source greatly; Guarantee the recognition effect and the speed of vision system, improved the production precision and the production efficiency of gold ball bonding line machine.

Description of drawings

Below in conjunction with accompanying drawing and instance the utility model is described further.

Fig. 1 is the schematic block circuit diagram of the utility model gold ball bonding line machine visual light source controller.

Fig. 2 is the circuit theory diagrams of the utility model control unit.

Fig. 3 is the circuit theory diagrams of the utility model interface circuit.

Fig. 4 is the circuit theory diagrams of the utility model LED driver module.

Fig. 5 is the circuit theory diagrams of the utility model power module.

Fig. 6 is the integrated circuit schematic diagram of the utility model gold ball bonding line machine visual light source controller.

Embodiment

The above, the just preferred embodiment of the utility model, the utility model is not limited to above-mentioned execution mode, as long as it reaches the technique effect of the utility model with identical means, all should belong to the protection range of the utility model.