CN206717281U - A kind of laser index carving control system - Google Patents

A kind of laser index carving control system Download PDF

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Publication number
CN206717281U
CN206717281U CN201720330041.6U CN201720330041U CN206717281U CN 206717281 U CN206717281 U CN 206717281U CN 201720330041 U CN201720330041 U CN 201720330041U CN 206717281 U CN206717281 U CN 206717281U
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unit
control unit
control
units
chip
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CN201720330041.6U
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Inventor
杨俊�
魏访
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Wuhan Polytechnic University
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Wuhan Polytechnic University
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Abstract

The utility model discloses a kind of laser index carving control system, the laser index carving control system includes control unit, DA converting units, galvanometer control unit, memory cell, human-machine interface unit, USB units, ether net unit and peripheral circuit unit, control unit respectively with USB units, ether net unit, peripheral circuit unit, human-machine interface unit, memory cell and the connection of DA converting units, the control unit realizes the communication with host computer by USB units and ether net unit, operational order is received by human-machine interface unit, and pass through DA converting unit output control signals, the control unit preserves service data in the memory unit, the control unit uses MAX3000A series CPLD chips.The laser index carving control system needs to reposition the precision controlling problem for carrying out secondary operation when can effectively solve the problem that laser marking, automatically identification positional information, automatic coordinate transforming is processed with reaching accurate positioning, reduce artificial participation, the design of work piece holder is simplified, improves the precision of positioning.

Description

A kind of laser index carving control system
Technical field
A kind of marking control system is the utility model is related to, more particularly to a kind of laser index carving control system.
Background technology
Laser index carving be the laser beam using high-energy-density to interacting goals, target surface is occurred physically or chemically Change, so as to obtain the mark mode of visible pattern.It is in laser welding, laser heat treatment, laser cutting, laser boring etc. The New Processing to grow up after application technology, is a kind of non-contact, pollution-free, without abrasion new mark work Skill.Laser mark technology on material surface, makes material rapid vaporization using the laser beam focus of high-energy, forms pit.With Laser beam regularly to move in material surface while control cut-offfing for laser, laser beam is also just processed into material surface One pattern specified.
In recent years, with laser dependable with function raising, plus computer technology develop rapidly and light The improvement of device is learned, promotes the development of Laser mark technology.In this application field, the position of labeled object, which is put, is One key factor, the difference of position, labeled content is also by different positions.So this is just carried to the clamping of workpiece Very high requirement is gone out.Sometimes for by picture pick-up device, carried out accordingly using vision positioning technical controlling marking content Rotation and offset operation, to complete being accurately positioned for mark location.The marking control system of view-based access control model, substantially reduce artificial Or streamline puts the precision of workpiece, the putting position no requirement (NR) to workpiece can be accomplished, can so greatly improve mark Efficiency, effectively widened the application field of marking control system.
But need to reposition when remaining laser index carving in current laser index carving control system to carry out two How the precision controlling problem of secondary processing, realize the automatic identification of positional information, and auto-changing coordinate is added with reaching to be accurately positioned The purpose of work, it has also become urgent problem.
Utility model content
The technical problems to be solved in the utility model is:A kind of laser index carving control system is provided, can effectively solve the problem that sharp Need to reposition the precision controlling problem for carrying out secondary operation when cursor is carved, automatically identify positional information, automatically conversion Coordinate reduces artificial participation, simplifies the design of work piece holder, improve the essence of positioning to reach accurate positioning processing Degree.Meanwhile the efficiency of streamline processing can be effectively improved, improve the precision entirely processed.
Solve above-mentioned technical problem technical scheme be:
A kind of laser index carving control system, the laser index carving control system include control unit, DA converting units, galvanometer control Unit, memory cell, human-machine interface unit, USB units, ether net unit and peripheral circuit unit processed, it is characterised in that:
Control unit respectively with USB units, ether net unit, peripheral circuit unit, human-machine interface unit, memory cell with And the connection of DA converting units, the control unit realizes the communication with host computer by USB units and ether net unit, by man-machine Interface unit receives operational order, and is stored in service data by DA converting unit output control signals, the control unit In memory cell, the control unit uses MAX3000A series CPLD chips;
DA converting units are connected with control unit and galvanometer control unit respectively, receive the control letter from control unit Number, give the signal output after conversion to galvanometer control unit, the DA converting units are by two DA conversion chips, two operation amplifiers Device and standard of precision voltage chip composition, one of DA conversion chips be binary channels, 12, multiplication, voltage output type DA Converter, another DA conversion chip are 12 voltage output type D/A converters of single channel, inside carry Zener voltage refer to and Voltage output amplifier;
Galvanometer control unit is connected with DA converting units, is carried out in the galvanometer control unit using difference chip AM26C31 The differential conversion of four road signals;
USB units are connected with control unit, receive the data from control unit, and the data forwarding that host computer is sent To control unit, the USB units use EZ-USB chips AN2131Q;
Ether net unit is connected with control unit, receives the data from control unit, and the data that host computer is sent Control unit is transmitted to, the ether net unit uses chip DM9000A and network connector chip HR911105A;
Memory cell is connected with control unit, receives the data from control unit, and the memory cell is divided into data and journey Sequence stores two parts, and pin-saving chip uses Large Copacity nonvolatile memory, and its capacity is 2048K × 8, internal by lithium electricity The SRAM and voltage monitoring circuit of pond and standard are formed;Program storage chip uses capacity to store core for the Flash of 64K × 8 Piece;
Human-machine interface unit is connected with control unit, forwards operational order to control unit, human-machine interface unit includes key Disk interface socket, LCD display module interface socket and the phase inverter with Schmidt trigger.
Further, the peripheral circuit unit is connected with control unit, the peripheral circuit unit include reset circuit, Crystal oscillating circuit, power circuit and jtag circuit.
Laser index carving control system of the present utility model has merged the technology of two aspects of machine vision and laser index carving.It is main To be directed to the commercial Application that secondary positioning processing is needed in industrial processes and needs visual identity to carry out marking, such as chip mark Carve, the application such as dress ornament and toy processing, the positioning marking of IC-card.The laser index carving control system can effectively solve the problem that laser is beaten Timestamp needs to reposition the precision controlling problem for carrying out secondary operation, automatically identifies positional information, automatic coordinate transforming To reach accurate positioning processing, reduce artificial participation, simplify the design of work piece holder, improve the precision of positioning, and The efficiency of streamline processing can be effectively improved, so as to improve the precision entirely processed.
Brief description of the drawings
Fig. 1 is the system structure diagram of this control system;
Fig. 2 is the circuit diagram of control unit in this control system;
Fig. 3 is the circuit diagram of DA converting units in this control system;
Fig. 4 is the circuit diagram of memory cell in this control system;
Fig. 5 is the circuit diagram of human-machine interface unit in this control system;
Fig. 6 is the circuit diagram of USB units in this control system;
Fig. 7 is the circuit diagram of galvanometer control unit in this control system;
Fig. 8 is the circuit diagram of ether net unit in this control system;
Fig. 9 is the circuit diagram of peripheral circuit unit in this control system.
Embodiment
Embodiment of the present utility model is described further below in conjunction with the accompanying drawings.
The system structure diagram of the utility model laser index carving control system is as shown in Figure 1.The control system includes control Unit processed, DA converting units, galvanometer control unit, memory cell, human-machine interface unit, USB units, ether net unit and outer Enclose circuit unit.Wherein, control unit respectively with USB units, ether net unit, peripheral circuit unit, human-machine interface unit, deposit Storage unit and the connection of DA converting units, the control unit realize the communication with host computer by USB units and ether net unit, Operational order is received by human-machine interface unit, and number will be run by DA converting unit output control signals, the control unit According to preservation in the memory unit.
The circuit diagram of control unit is as shown in Figure 2 in this control system.This control unit is using altera corp MAX3000A series CPLD chips, MAX3000A series CPLD are high-performance, low cost programmable logical device (PLD), and it is adopted With MAX architectures, there is the ability that 3.3V in-system programmings are carried out by jtag interface.Highdensity PLD, have 600 to arrive 10,000 available door.Logical time delay between pin is 4.5ns, multivoltage interface, can make device Core Operational in 3.3V And I/O pins are compatible with 5V, 3.3V, 2.5V logic level, the scope of pin number is from 44 to 256.It uses CMOS EEPROM Technique, programmed and erased number is up to 100 times.With programmable encrypted bits, the design in chip can be encrypted, prevent others from The design data in chip is read easily.
The circuit diagram of DA converting units is as shown in Figure 3 in this control system.The converting unit is mainly turned by two DA Change chip U5 and U6, two operational amplifier U12 and U13 and standard of precision voltage chip U11 compositions.U5 is binary channels, 12 Position, multiplication, voltage output type D/A converter, there are an output amplifier and a feedback resistance per road D/A converter.It is all Logical signal be all low level triggering and it is compatible with Transistor-Transistor Logic level and CMOS level.U5 uses ± 12V or ± 15V power, and turn It is ± 1LSB to change error, and voltage output settling time is 4 μ s.
U5 effect is to carry out D/A switch to the galvanometer X-axis and Y-axis control signal of marking data, them is changed into mould Intend voltage signal to go to control galvanometer X-axis and y-axis motor.Although current many marking controllers all use 16 DA conversion chips, But in order to reduce cost of manufacture, as long as and in view of air exercise mark on a map case fineness it is less demanding if 12 DA conversion cores Piece is fully able to meet to require, therefore we still select 12 DA conversion chips, and is upgraded to 16 DA conversion cores later Piece is also easy to, as long as slightly being changed to hardware circuit and software.
U11 is standard of precision voltage chip.There is no built-in reference voltage inside U5, its reference voltage needs to pass through VREFA Pin and the input of VREFB pins.In order to obtain high-precision DA conversions, it is necessary to there is the reference voltage source of high stability.U11 work With being reference voltage that high stability is provided for U5.It is+5V standard of precision voltage chips, has excellent temperature stability, Extremely low temperature drift coefficient can be ensured, while also there is the characteristics such as low suction electric current and low noise, the model of input voltage Enclose for 8V to 33V, representative value 15V.U5 output voltage can be finely adjusted by potentiometer Rp1, the scope of regulation is 5V±150mV。
U6 is 12 voltage output type D/A converters of single channel, and inside carries Zener voltage and referred to and voltage output amplification Device, therefore do not need outside reference voltage source.It has a double buffer logic interface, 8 bit data bus, 12 change datas Input needs write operation twice.All logical signals be all low level triggering and it is compatible with Transistor-Transistor Logic level and CMOS level.U6 is adopted Powered with+15V, transformed error is ± 1LSB, and voltage output settling time is 5 μ s.U6 effect is the power to marking data Control signal carries out D/A switch, it is changed into analog voltage signal and goes to control the power output of laser.U6 voltage output Scope is 0V~+10V, compatible with the input voltage of laser power control signal requirement, so not needing operational amplification circuit pair It carries out voltage transformation.
The circuit diagram of memory cell is as shown in Figure 4 in this control system.Storage chip U3 is non-volatile using Large Copacity Property memory, its capacity is 2048K × 8 ,+5V power supplies.Its inside is SRAM and the voltage monitoring by lithium battery and standard Circuit forms.It has 20 bit address buses, and its address bus is divided into low 15 and high 6 two parts by we, low 15 Address by control unit address bus it is low 15 output, high 6 data/address bus by control unit pass through set latch work( Can after export.Storage chip U4 uses Flash memory chip.It is that one kind uses capacity made of CMOS technology as 64K × 8 The quick reading of 32 pins, can the erasable read-only storage removed of fast programming, the write-in of firmware program is enterprising in programmable device It is capable, should forbid writing during chip normal work, chip write enabled pin WE should connect high level.In order that program is deposited Reservoir is chosen always in system operation, chip enable CE pin should be grounded.
The circuit diagram of human-machine interface unit is as shown in Figure 5 in this control system.It mainly includes keyboard interface socket The P9 and LCD display module interface socket P2 and phase inverter U15 with Schmidt trigger.Make full use of control single to utilize The I/O pins of member, simplify button polling routine, and the interface mode of keyboard (not shown) uses independent mode, each Independent keys It is directly connected in a manner of man-to-man in the I/O input lines of control unit, each input pin connects a pull-up resistor, makes The input of keyboard is that low level is effective.
The model YM12864F, YM12864F of LCD display module (not shown) are that 128 × 64 lattice graphics lcds are shown Module, it carries T6963CLCD controllers and T6A39, T6A40LCD driver, 8KB external display memory (SRAM), The inside character generator CGROM of 128 characters, there are figure, character, figure and character mixing three kinds of display patterns and 6 × 8 With 8 × 8 two kinds of display fonts.YM12864F can use negative supply and+5V to power, and single+5V can also be used to power.Using Negative supply and+5V can adjust the contrast that LCD is shown when powering by potentiometer Rp4.Adjustable resistance R52 is aobvious for adjusting Show the backlight illumination of module.
The circuit diagram of USB units is as shown in Figure 6 in this control system.It is mainly by cores such as U1, U7, U8, U9, U10 The socket such as piece and J1, J2, J3, J5 and wire jumper and S4 plucking number sign switches composition.U1 is EZ-USB chip AN2131Q, and it is whole The core of circuit, there are 80 pins, external 12MHz crystal oscillator, pass through frequency multiplier circuit frequency multiplication to 24HMz, USBD- in chip internal It is connected with USBD+ pins by the D+ of two resistance R5, R6 respectively with Type B USB socket J1 with D-.PA2/OE#、PA3/CS#、 6 pins such as PA4/FWR#, PA5/FRD#, PC6/WR#, PC7/RD# are multifunctional pins, necessary using pin during the second function Pull-up resistor is connected, leg signal is invalid during ensuring that no control signal exports.It is in order to anti-that WAKEUP# pins, which connect pull down resistor, Only enter suspended state, it is ensured that EZ-USB can be run always.
The circuit diagram of galvanometer control unit is as shown in Figure 7 in this control system.Galvanometer control unit circuit is to realize The key component of high quality laser marking, simulation galvanometer control unit is used in conventional laser marking machine.
In the present system, the difference that four road signals are carried out using the difference chip AM26C31 of TI (Texas Instrument) company is turned Change, so as to obtain required differential signal.In the pin definitions corresponding to galvanometer control unit interface that the system uses, when Clock signal wire, synchronous signal line, X passage data wire, Y channel data lines correspond respectively to (CLK+, CLK-), (SYN+, SYN-), (CHANNEL_X+、CHANNEL_X-)、(CHANNEL_Y+、CHANNEL_Y-).It follows that four road signal wires of control unit It is by accessing galvanometer control unit, therefore the interface phase that control unit can not directly with galvanometer control unit again after difference Even, but an external difference channel is needed to be changed into difference letter after being changed CLK, SYN, CHANNEL_X, CHANNEL_Y Number (CLK+, CLK-), (SYN+, SYN-), (CHANNEL_X+, CHANNEL_X-), (CHANNEL_Y+, CHANNEL_Y-) are controlled The operating of damping mirror control unit.AM26C31 chips include No. 4 difference channels, can just carry out difference to 4 road signals, so A piece of AM26C31 only need to be used.Clock cable, synchronous signal line, Y channel data signals line, X passage data signal line PA4, PA5, PA6, PA7 in control unit are met respectively, and the differential signal access DB15 joints after AM26C31 is changed should DB15 joints are the signal input of galvanometer control unit.
The circuit diagram of ether net unit is as shown in Figure 8 in this control system.Ether net unit uses DAVICOM companies A three-in-one network chip DM9000A of research and development, the chip package is small, so it is few to occupy plank space.Ethernet chip with Network connector intermediate demand is connected by network isolation transformer, and its main function is stopping direct current, logical exchange, avoids twisted-pair feeder On DC level interference DM9000A normal work.The network connector HR911105A selected in the system carries isolation and become Depressor, so as to simplify the design of circuit.
The circuit diagram of peripheral circuit unit is as shown in figure 9, peripheral circuit includes reset circuit in this control system (a), crystal oscillating circuit (b), power circuit (c), jtag circuit (d).Reset circuit is the essential part of hardware system, System can cause program fleet or deadlock due to the interference by power supply noise radio frequency etc. in the process of running, control The reset output pin of unit terminates an electric capacity and forms electrification reset circuit to ground, while adds one between reset pin and ground Individual controlling switch forms manual reset circuit.The clock source of control system is configured to outside high-speed clock signal source, by 8MHz's External crystal-controlled oscillation forms clock circuit together with two 20pF load capacitance C5, C6, and accurate master clock is provided for system.Power supply Decoupling capacitor and filter capacitor are all added between the power supply and ground of circuit, D7 and D8 are respectively 3.3V and 2.5V power supply indicators. It is convenient for the debugging of system, it is therefore necessary to debugging interface is connected to, the interface can carry out simulation hardware, there is 5 standard signals, point Be not JTCK, JTMS, JNTRST, JTDL, JTDO, the standard interface by the JTAG of 20 pins, can directly and J-LINK or U-LINK is connected, so can be to carry out in-circuit emulation, download program etc. to system by computer.
In addition to the implementation, the utility model can also have other embodiment, all to use equivalent substitution or equivalent change Change the technical scheme to be formed, all fall within the utility model it is claimed within the scope of.
The scope of protection of the utility model is not limited to the above embodiments, it is clear that those skilled in the art can be right The present invention carries out various changes and deformation without departing from scope and spirit of the present invention.If these changes and deformation belong to this reality In the range of new claim and its equivalent technologies, then intention of the present utility model also comprising these changes and deforms It is interior.

Claims (2)

1. a kind of laser index carving control system, the laser index carving control system includes control unit, DA converting units, galvanometer control Unit, memory cell, human-machine interface unit, USB units, ether net unit and peripheral circuit unit, it is characterised in that:
Control unit respectively with USB units, ether net unit, peripheral circuit unit, human-machine interface unit, memory cell and DA Converting unit connects, and the control unit realizes the communication with host computer by USB units and ether net unit, passes through man-machine interface Unit receives operational order, and service data is stored in into storage by DA converting unit output control signals, the control unit In unit, the control unit uses MAX3000A series CPLD chips;
DA converting units are connected with control unit and galvanometer control unit respectively, receive the control signal from control unit, will Signal output after conversion gives galvanometer control unit, the DA converting units by two DA conversion chips, two operational amplifiers with And standard of precision voltage chip composition, one of DA conversion chips be binary channels, 12, multiplication, voltage output type DA conversion Device, another DA conversion chip are 12 voltage output type D/A converters of single channel, and inside carries Zener voltage reference and voltage Output amplifier;
Galvanometer control unit is connected with DA converting units, and four tunnels are carried out using difference chip AM26C31 in the galvanometer control unit The differential conversion of signal;
USB units are connected with control unit, receive the data from control unit, and the data forwarding that host computer is sent is to control Unit processed, the USB units use EZ-USB chips AN2131Q;
Ether net unit is connected with control unit, receives the data from control unit, and the data forwarding that host computer is sent To control unit, the ether net unit uses chip DM9000A and network connector chip HR911105A;
Memory cell is connected with control unit, receives the data from control unit, and the memory cell is divided into data and program is deposited Store up two parts, pin-saving chip use Large Copacity nonvolatile memory, and its capacity be 2048K × 8, inside by lithium battery with SRAM and the voltage monitoring circuit composition of standard;Program storage chip uses Flash memory chip of the capacity for 64K × 8;
Human-machine interface unit is connected with control unit, forwards operational order to control unit, human-machine interface unit connects including keyboard Mouth socket, LCD display module interface socket and the phase inverter with Schmidt trigger.
2. laser index carving control system as claimed in claim 1, it is characterised in that:
The peripheral circuit unit is connected with control unit, and the peripheral circuit unit includes reset circuit, crystal oscillating circuit, power supply Circuit and jtag circuit.
CN201720330041.6U 2017-03-22 2017-03-22 A kind of laser index carving control system Expired - Fee Related CN206717281U (en)

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CN201720330041.6U CN206717281U (en) 2017-03-22 2017-03-22 A kind of laser index carving control system

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Application Number Priority Date Filing Date Title
CN201720330041.6U CN206717281U (en) 2017-03-22 2017-03-22 A kind of laser index carving control system

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110032130A (en) * 2019-06-14 2019-07-19 江苏域盾成鹫科技装备制造有限公司 A kind of simulation galvanometer sensor digital system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110032130A (en) * 2019-06-14 2019-07-19 江苏域盾成鹫科技装备制造有限公司 A kind of simulation galvanometer sensor digital system
CN110032130B (en) * 2019-06-14 2019-08-23 江苏域盾成鹫科技装备制造有限公司 A kind of simulation galvanometer sensor digital system

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