CN202975743U - CTP machine circuit control system - Google Patents

Abstract

The utility model relates to a CTP machine circuit control system. The CTP machine circuit control system comprises a host computer and a laser. The CTP machine circuit control system further comprises a data plate card used for receiving image data block information sent out by the host computer and performing integrated processing and thereafter outputting laser-structuring-used differential signals, a laser driving plate used for receiving the laser-structuring-used differential signals, outputting electrical signals and controlling the laser, and a laser power detection plate used for sensing optical signals of the laser and feeding back level signals to the host computer after photovoltaic conversion is performed; the laser power detection plate communicates with the host computer through a complete-machine CAN bus; and the laser driving plate receives adjustment signals from the complete-machine CAN bus, wherein the adjustment signals which are sent out by the host computer after level comparison is performed. With the CTP machine circuit control system of the utility model adopted, high-speed and stable transmission of image data can be realized, real-time monitoring and feedback of laser output power can be also realized, and the power of the laser can be accurately adjusted through voltage; and therefore, the CTP machine circuit control system is advantageous in simple structure, convenient wiring, guaranteed structuring accuracy and greatly improved structuring efficiency.

Description

CTP platemaking machine circuit control system

Technical field

The utility model relates to a kind of CTP platemaking machine circuit control system.

Background technology

The CTP platemaking machine is the abbreviation of computer direct platemaking machine, belongs to the front equipment of seal.The CTP platemaking machine adopts digitized workflow, change the word in host computer, image information into digital signal, then mechanical by controlling laser scans, form the latent image of image on forme, after developing, the word in host computer, image information are namely reduced and are directly printed for offset press on forme.

The CTP platemaking machine is by accurately and complicated optical system, Circuits System, and the mechanical system three parts consist of.Wherein, but circuit control system plays vital effect to the plate-making quality of whole CTP platemaking machine and efficient and handling.Mainly there are the following problems for existing CTP platemaking machine circuit control system: 1) at present the collection of image and transmission technology at a high speed, stable direction develop rapidly, the image data transmission of existing CTP platemaking machine still adopts traditional pci interface, and its message transmission rate can not meet the requirement of high speed data transfer; 2) output power of laser beam directly affects the quality of cutting blocks for printing and printing, and existing CTP platemaking machine lacks the Real Time Monitoring of laser instrument and the function of FEEDBACK CONTROL; 3) by the electric current of direct adjustment laser instrument, the power of laser instrument is adjusted at present, the circuit structure that this kind electric current is regulated is complicated, the electric current output of power adjustments difficulty and laser instrument is unstable, has increased the power adjustments difficulty, affects the serviceable life of laser instrument.

The utility model content

The technical problems to be solved in the utility model is to provide a kind of CTP platemaking machine circuit control system, this system not only can realize the high speed stable transfer of view data and by voltage, the power of laser instrument precisely be regulated, and detect in real time feedback function with laser output power, the whole system circuit structure is simple, wiring is convenient, can increase substantially to beat version efficient and can guarantee to beat the version precision.

For solving the problems of the technologies described above, CTP platemaking machine circuit control system of the present utility model comprises host computer and laser instrument, and its design feature is that this system also comprises for a data integrated circuit board that receives Output of laser after view data block message that host computer sends and overall treatment and beat the differential signal that version uses, receives above-mentioned laser and break the light signal of Laser Driven plate that differential signal that version uses and output electrical signals control laser instrument, induction laser instrument and the power detection plate by the backward host computer feedback level of opto-electronic conversion signal; Between described power detection plate and host computer, by complete machine CAN bus communication, the Laser Driven plate also is connected on complete machine CAN bus and receives the adjustment signal that is sent more afterwards by level ratio by host computer.Adopt said structure, the Laser Driven plate is controlled in real time to laser instrument, and the laser power detection plate carries out Real-Time Monitoring and feed back to host computer automatically adjusting to the output power of laser instrument, has effectively avoided the too high impact on laser life-span of power; The data integrated circuit board directly and host computer carry out image data transmission, carry out communication by complete machine CAN bus between Laser Driven plate and laser power detection plate and host computer, the transfer efficiency of whole data-signal and control signal is high, transmission stability is strong.

Described data integrated circuit board comprise the PCI-E interface module that is connected with host computer, with the PCI-E interface module carry out data communication the FPGA controller, to the FPGA controller send the clock frequency conversion and phase-lock module of beating the version pulse signal, for the memory module of FPGA controller access data, laser data signal that reception FPGA controller sends and send the CTP data-driven module of the differential signal that laser beats edition to the Laser Driven plate.adopt the PCI-E interface module to receive the video data block of host computer, clock frequency conversion and phase-lock module sends to the FPGA controller and beats the version pulse signal, the FPGA controller is controlled whole integrated circuit board, under the control of synchronous and clock signal, the FPGA controller data are cushioned and with deposit data in memory module, CTP data-driven module receives laser data signal that the FPGA controller sends and then converts laser to and beat the differential signal of edition use and export to the Laser Driven plate, the Laser Driven plate utilizes this differential signal to control laser instrument and beats version, the whole database Cali high speed of PCI-E, stablize data transmission performance, make the image transmitting speed of CTP platemaking machine faster, beat version efficient higher, and whole data integrated circuit board wiring is simple, circuit is realized convenient.

Described clock frequency conversion and phase-lock module comprise the cylinder scrambler of synchronizeing with the CTP platemaking machine and be used for receiving the reference frequency differential signal that the cylinder scrambler sends and carry out frequency conversion and phase-lock process after output make the frequency conversion and phase-lock device of edition pulse signal.Clock frequency conversion and phase-lock module is used for gathering the operating frequency signal of CTP platemaking machine and carries out frequency conversion and phase-lock output and beat the version pulse signal to the FPGA controller.

Described power detection plate comprise for the light signal of induction laser instrument and produce voltage signal photoelectric cell, receive the voltage signal that photoelectric cell produces and the check-out console operational amplifier that signal is amplified, with the simulating signal after above-mentioned amplification change into digital signal level analog to digital converter, above-mentioned digital signal level is sent to check-out console CAN communication module on complete machine CAN bus.adopt said structure, utilize photoelectric cell to convert the light signal of laser instrument to voltage signal, utilize operational amplifier that voltage signal is amplified, then simulating signal is changed into digital signal level and send on complete machine CAN bus via the CAN communication module via analog to digital converter, host computer reads the level signal on the CAN bus and adjusts signal to the Laser Driven plate with arranging to send after level ratio, the Laser Driven plate is adjusted the power of laser instrument again, whole check-out console is simple in structure, circuit is realized convenient, the power stage that has guaranteed laser instrument is stable, avoided too high power to laser life-span and played the impact of edition quality.

Described Laser Driven plate comprises the drive plate CAN communication module that is connected with complete machine CAN bus, receive signal and the drive plate microprocessor that signal is processed of drive plate CAN communication module, be connected to division module on the drive plate microprocessor, be connected to a plurality of voltage regulator modules on division module; Also be connected with the energy control module that makes of beating edition differential signal that uses for reception laser on above-mentioned drive plate microprocessor, make the enable signal output terminal of energy control module be divided into the multichannel identical with the quantity of above-mentioned voltage regulator module and corresponding being connected on each voltage regulator module.Adopt said structure, voltage regulator module is connected on laser instrument, can regulate easily the input voltage of laser instrument, thereby regulates its output power; Energy control module has been facilitated respectively each road laser instrument is operated separately, strengthened handling.

The reference source of the voltage input end that described division module comprises many output digital to analog converter of being connected with the drive plate microprocessor, be connected to digital to analog converter and be connected to the drive plate operational amplifier of each output terminal of digital to analog converter; Above-mentioned each drive plate operational amplifier is connected respectively on each voltage regulator module.Adopt said structure, first voltage is carried out digital-to-analogue and transform, then carry out signal by amplifier and amplify, strengthened drive current, stablized the output of each road voltage.

Described voltage regulator module comprises the first voltage follower, comparison amplifier, second voltage follower, voltage regulator and the high-speed driver that connects successively according to the electric signal trend; Also be connected with stabilivolt on comparison amplifier; The output terminal that enables of energy control module is connected on high-speed driver, and the voltage output end of high-speed driver is connected with laser instrument.Adopt the two-stage voltage follow, first isolate, then calibrate via voltage regulator, further stablized Voltage-output, avoided the overvoltage infringement.Stabilivolt is set, has strengthened voltage stability.

The described hyperchannel follower that energy control module is comprised be connected with the drive plate microprocessor and be connected to differential signal controller on the output terminal of hyperchannel follower, differential signal controller output multi-channel enable signal and correspondence are transferred on each voltage regulator module.Adopt said structure, make energy control module correspondingly control multiple path laser, simplified circuit structure, increased the operating performance of circuit.

Described CTP data-driven module comprises that a plurality of differential driver and its beat by a plurality of differential driver configuration output 128 road laser differential signal that version is used.The laser instrument of existing CTP platemaking machine has 32 the tunnel, the 48 road and 64 the tunnel, wherein, the CTP platemaking machine of 64 road laser instruments is present fastest transmissions, but be also a bottleneck, data integrated circuit board of the present utility model based on the high speed of PCI-E, stablize data transmission performance, can realize 128 tunnel laser data transmission, broken through bottleneck, make message transmission rate obtain significantly promoting, beat version efficient thereby greatly improved.

Described Laser Driven plate has 16 and every and controls eight road laser instruments; Described 128 road laser beat a differential signal every eight tunnel that version uses be one group totally ten six groups respectively correspondence be transferred on above-mentioned 16 blocks of Laser Driven plates.In order to coordinate 128 tunnel high rate data transmission, the Laser Driven plate arranges 16, and 16 blocks of Laser Driven plates can be arranged on the wiring backplane of complete machine jointly, and every block of Laser Driven plate is controlled eight road laser instruments.Adopt said structure, both guaranteed the intensity of each road signal, facilitated again assembling and maintenance to change.

In sum, the beneficial effects of the utility model are: the high speed stable transfer that has realized view data; By voltage, the power of laser instrument is precisely regulated, possessed the function that laser output power is detected and feeds back in real time; The whole system circuit structure is simple, wiring is convenient, has increased substantially when having guaranteed to beat the version precision and has beaten version efficient.

Description of drawings

Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail:

Fig. 1 is one-piece construction theory diagram of the present utility model;

Fig. 2 is the structural principle block diagram of data integrated circuit board in Fig. 1;

Fig. 3 is the structural principle block diagram of clock frequency conversion and phase-lock module in Fig. 2;

Fig. 4 is the circuit theory schematic diagram of CTP data-driven module in Fig. 2;

Fig. 5 is the structural principle block diagram of Laser Driven plate in Fig. 1;

Fig. 6 is the structural principle block diagram of division module in Fig. 5;

Fig. 7 is the circuit theory diagrams of digital to analog converter in Fig. 6;

Fig. 8 is the circuit theory diagrams of operational amplifier in Fig. 6;

Fig. 9 is the structural principle block diagram of voltage regulator module in Fig. 5;

Figure 10 is the circuit theory diagrams of the voltage regulator module in Fig. 5 and Fig. 9;

Figure 11 is a kind of embodiment schematic block circuit diagram that makes energy control module in Fig. 5;

Figure 12 is the another kind of embodiment schematic block circuit diagram that makes energy control module of Fig. 5;

Figure 13 is the circuit theory diagrams of eight passage followers in Figure 12 and one of them differential signal controller;

Figure 14 is phase inverter in Figure 12 and the circuit theory diagrams of pilot lamp;

Figure 15 is the structural principle block diagram of power detection plate in Fig. 1;

Figure 16 is the photoelectric cell of Figure 15 and the circuit theory diagrams of check-out console operational amplifier part.

Embodiment

With reference to accompanying drawing, a kind of embodiment of CTP platemaking machine circuit control system of the present utility model is for comprising host computer 1 and laser instrument 6, and this system also comprises for a data integrated circuit board 2 that receives Output of laser after view data block message that host computer 1 sends and overall treatment and beat the differential signal that version uses, receive above-mentioned laser breaks the light signal of Laser Driven plate 3 that differential signal that version uses and output electrical signals control laser instrument 6, induction laser instrument 6 and the power detection plate 4 by the backward host computer 1 feedback level signal of opto-electronic conversion.Between power detection plate 4 and host computer 1, by 5 communications of complete machine CAN bus, Laser Driven plate 3 also is connected on complete machine CAN bus 5 and receives the adjustment signal that is sent more afterwards by level ratio by host computer 1.As shown in Figure 1, host computer 1 changes into video data block with image and is transferred to data integrated circuit board 2, send laser after data integrated circuit board 2 is processed video data block and beat the differential signal of version use to Laser Driven plate 3, the indication that Laser Driven plate 3 beats according to laser the differential signal that version uses is controlled laser instrument 6, and then laser instrument 6 sends laser and carries out the operation of etching forme.In the time of laser instrument 6 work, the light signal of 4 pairs of laser instruments 6 of power detection plate carries out Real-Time Monitoring, then carry out opto-electronic conversion in power detection plate 4 inside and convert light signal to level signal, level signal feeds back to host computer 1 by complete machine CAN bus 5, host computer 1 compares the level signal of receiving and the level that arranges that pre-sets, then send to complete machine CAN bus 5 according to comparative result and adjust signal, Laser Driven plate 3 receives from complete machine CAN bus 5 and adjusts signal and according to this adjustment signal, the power of laser instrument 6 regulated.

With reference to Fig. 2 and Fig. 3, data integrated circuit board 2 comprise the PCI-E interface module 2-1 that is connected with host computer 1, with PCI-E interface module 2-1 carry out data communication FPGA controller 2-2, to FPGA controller 2-2 send the clock frequency conversion and phase-lock module 2-3 that beats the version pulse signal, for the memory module 2-4 of FPGA controller 2-2 access data, laser data signal that reception FPGA controller 2-2 sends and send the CTP data-driven module 2-5 of the differential signal that laser beats edition to Laser Driven plate 3.As shown in Figure 2, PCI-E interface module 2-1 comprises PEX8311 chip and PCIE interface, the PEX8311 chip of PCI-E interface module 2-1 use PLX company realizes also having the PCI-E interface module based on PEX8111 in prior art by the mode of bridge joint, and it also can be applicable in the utility model.As shown in Figure 3, clock frequency conversion and phase-lock module 2-3 comprise the cylinder scrambler 2-31 of synchronizeing with the CTP platemaking machine and be used for receiving the reference frequency differential signal that cylinder scrambler 2-31 sends and carry out frequency conversion and phase-lock process after output beat the frequency conversion and phase-lock device 2-32 of edition pulse signal.The principle of work of whole data integrated circuit board 2 is: CTP platemaking machine system powers on, host computer 1 changes into a pile data block to tiff image, transfer to FPGA controller 2-2 by PCI-E interface module 2-1, the PEX8311 chip of PCI-E interface module 2-1 use PLX company is realized by the bridge joint mode, utilize the PEX8311 bridging chip to complete PCI-E and connect, PEX8311 by the logical program of FPGA controller 2-2 directly to its control.Inner at FPGA controller 2-2, by FIFO, data are cushioned, under the control of synchronous and clock signal, the deposit data of FIFO output is in memory module 2-4.The reference frequency that sends from cylinder scrambler 2-31 is the reference frequency differential signal of 83.3KHZ, the reference frequency that sends according to cylinder girth and the cylinder scrambler 2-31 of platemaking machine is carried out beating edition pulse signal and passing to FPGA controller 2-2 of output 1.7MHZ after frequency conversion and phase-lock through frequency conversion and phase-lock device 2-32.In the laser data part, FPGA controller 2-2 is transferred to CTP data-driven module 2-5 to the laser data signal, CTP data-driven module 2-5 converts the laser data signal to laser again and beats differential signal PA, the PB that version is used, then be transferred on Laser Driven plate 3, Laser Driven plate 3 drive laser 6 work again, laser instrument 6 sends laser and gets the ablation plate ready, thereby completes the transmission that tiff image arrives.

The theory diagram of a kind of frequency conversion and phase-lock device 2-32 has been shown in Fig. 3, and it comprises differential signal controller 2-321, phase inverter 2-322, programmable Timer/counter 2-324, bi-directional transceiver 2-326 and two frequency converters.Cylinder scrambler 2-31 sends the input end that reference frequency differential signal INDEX+, INDEX-are input to differential signal controller 2-321, output individual pulse signal SINDEX, then carry out anti-phase output HINDEX through phase inverter 2-322.In like manner differential signal PULSEA+, PULSEA-export HPULSEA after differential signal controller 2-321 and phase inverter 2-322.The program of FPGA controller 2-2 is input to programmable Timer/Counter 2-324, output pulse signal OUT0, OUT0 and HPULSEA are input to first order frequency converter 2-323, carry out frequency conversion and phase-lock, output signal HPULSE0 turns back to the input end of clock of programmable Timer/Counter 2-324 again, it is further phase-locked that output pulse signal OUT1, the OUT2 of programmable Timer/Counter 2-324 is input to second level frequency converter 2-325, output signal HNPULSE.HINDEX, HNPULSE are input to the bi-directional transceiver 2-326 of dual power supply, and output signal INDEX, MNPULSE turn back to FPGA controller 2-2.Wherein, output signal INDEX is the first signal of row, and through after frequency conversion and phase-lock, the differential signal of 83.3KHZ becomes edition pulse signal of beating of 1.7MHZ.Wherein, in physical circuit, differential signal controller 2-321 adopts DS3486, phase inverter 2-322 adopts Schmidt trigger MC74HC14AD, two frequency converters adopt frequency conversion chip 74VHC4046M, programmable Timer/counter 2-324 adopts 82C53, and bi-directional transceiver 2-326 adopts SN74LVC4245DB.

With reference to Fig. 2, for fear of loss of data, memory module 2-4 comprises two SDRAM storeies that can carry out respectively at one time read operation and write operation.Adopt two SDRAM storeies, FPGA controller 2-2 can in synchronization SDRAM memory write data and from another SDRAM storer read data, complete efficiently, read and write data reliably wherein, can effectively avoid loss of data.

With reference to Fig. 5, Laser Driven plate 3 comprises the drive plate CAN communication module 3-1 that is connected with complete machine CAN bus 5, receive signal and the drive plate microprocessor 3-2 that signal is processed of drive plate CAN communication module 3-1, be connected to division module 3-3 on drive plate microprocessor 3-2, be connected to a plurality of voltage regulator module 3-4 on division module 3-3; Also be connected with on above-mentioned drive plate microprocessor 3-2 and make energy control module 3-5 for what receive that laser beats differential signal that version uses, make the enable signal output terminal of energy control module 3-5 be divided into the multichannel identical with the quantity of above-mentioned voltage regulator module 3-4 and corresponding being connected on each voltage regulator module 3-4.As shown in Figure 5, describe as example to use eight road laser instruments 6, voltage regulator module 3-4 also arranges eight and is connected respectively on each road laser instrument 6, the voltage of laser instrument 6 is regulated, thereby realized adjustment to its power.As shown in Figure 5, Laser Driven plate 3 also includes power module 3-6, and it is used to the energising of whole integrated circuit board, but choice for use+7V and+5V.

With reference to Fig. 6, Fig. 7 and Fig. 8, the reference source 3-32 of the voltage input end that division module 3-3 comprises many output digital to analog converter 3-31 of being connected with drive plate microprocessor 3-2, be connected to digital to analog converter 3-31 and be connected to the drive plate operational amplifier 3-33 of each output terminal of digital to analog converter 3-31; Above-mentioned each drive plate operational amplifier 3-33 is connected respectively on each voltage regulator module 3-4.Wherein, drive plate microprocessor 3-2 is preferably 8 the CMOS microprocessor ATMEGA32 of low-power consumption based on the AVR risc architecture that strengthens.As shown in Figure 6 and Figure 7, signal LDAC, SYNCA, SCKL, the DIN that is sent by ATMEGA32 is input to eight passage digital-to-analogue converter AD5328.Digital-to-analogue converter AD5328 output 8 road analog voltage signal V1A, V1B, V1C, V1D, V1E, V1F, V1G, V1H.As shown in Figure 2, eight road analog voltage signals become VP1, VP2, VP3, VP4, VP5, VP6, VP7, VP8 successively after operational amplifier amplifies.For the reference voltage of benchmark is provided to AD5328, adopt three sections adjustable shunt reference source TL431 of good thermal stability, wherein, and the 2 pin input+5V voltages of TL431,3 pin output voltages are adjusted into 2.5V.Take one road voltage signal wherein as example, as shown in Figure 8, take V1A as example, output voltage signal VP1 after homophase operational amplifier LM124.Strengthen drive current, stablized output voltage.

With reference to Fig. 9 and Figure 10, take the voltage-regulation of single channel laser instrument 6 as example, voltage regulator module 3-4 comprises the first voltage follower 3-41, comparison amplifier 3-42, second voltage follower 3-43, voltage regulator 3-44 and the high-speed driver 3-45 that connects successively according to the electric signal trend; Also be connected with stabilivolt 3-46 on comparison amplifier 3-42; The output terminal that enables of energy control module 3-5 is connected on high-speed driver 3-45, and the voltage output end of high-speed driver 3-45 is connected with laser instrument 6.After wherein arbitrary road input voltage VP carried out anti-phase output by the first voltage follower 3-41,3-42 compared by comparison amplifier, prevents the excessive laser instrument that burns out of voltage.And then by second voltage follower 3-43, the voltage of stable output.Carry out the voltage-regulation calibration by voltage regulator 3-44 more afterwards, after the output port of voltage regulator 3-44 and capacitances in series filtering output voltage, more in parallel with laser instrument 6 by high-speed driver 3-45.As shown in figure 10, the concrete circuit of realizing is: input voltage VP is connected on 3 pin of operational amplifier A D8639,2 pin of AD8639 with is connected pin connect carry out anti-phase output after, receive the 2 pin input ends of comparison amplifier AD8276.7.5v voltage is received 1 pin of stabilivolt LM4040,3 pin that 1 pin of LM4040 is received AD8276 compare by comparer, prevent the excessive laser instrument that burns out of voltage.Output terminal 6 pin of AD8276 are connected in 5 pin of AD8639 after by electric resistance partial pressure, and 6 pin are connected to come regulated output voltage with 7 pin.Two reasonable dividing potential drops of resistance of output voltage series connection, the voltage that is chosen at input range interior (Vin=5V-26V) is connected to voltage regulator MIC29302 and carries out voltage-regulation, the 4 pin output port output voltages in parallel with capacitance resistance of MIC29302.Output voltage is received 1,3,8 pin of high-speed driver UCC37321, and 6, the 7 pin voltage output ends of UCC37321 are connected with the negative pole of laser instrument, and the 3.3V Voltage-output terminates on the positive pole of laser instrument 6.Through above-mentioned circuit design, the voltage of the laser instrument 6 of output can carry out trickle adjusting accurately between 4.5V to 6V, regulate with this power to laser instrument 6.

With reference to Figure 11, Figure 12, Figure 13 and Figure 14, as shown in figure 11, the hyperchannel follower 3-51 that energy control module 3-5 is comprised be connected with drive plate microprocessor 3-2 and be connected to differential signal controller 3-52 on the output terminal of hyperchannel follower 3-51, wherein, the Main Function of differential signal controller 3-52 is reception and the ternary output of differential signal.Differential signal controller 3-52 output multi-channel enable signal and corresponding being transferred on the high-speed driver 3-45 of each voltage regulator module 3-4.

In addition, make the more preferred a kind of embodiment of energy control module 3-5 be, as shown in figure 12, also be connected with phase inverter 3-53 on the output terminal of differential signal controller 3-52, all be connected with pilot lamp 3-54 on each output terminal of phase inverter 3-53.Whether the setting of pilot lamp 3-54 is to enable effectively for what indicate intuitively this road, and the convenient operation person observes, and it can use light emitting diode in physical circuit.As Figure 13 and shown in Figure 14, enable PT1 and Third Road enables PT3 as example take the first via, the specific implementation circuit of energy control module 3-5 is described as follows: by the ten double sockets of core to the ATMEGA32 write-in program, send data-signal DAT164 by ATMEGA32 and receive 1 pin and 2 pin that eight passage output LED drive chip 74HC164, send by ATMEGA32 8 pin that clock signal clk 164 is received 74HC164.Eight passage outputs of 74HC164 are respectively S1, S2, S3, S4, S5, S6, S7, S8.Use four MC3486 to carry out the reception of double difference circuit in side circuit.Only choose one of them MC3486 in Figure 13 and describe, 2,1,10,9 pin input differential signal PA1, PB1 and PA3, the PB3 of MC3486, S1 inputs 4 pin, and S3 inputs 12 pin.Output terminal 3 pin are exactly first via enable signal PT1, and output terminal 11 pin are exactly Third Road enable signal PT3.Wherein, eight road enable signal PT are through phase inverter output invert enable signal PTL.As shown in figure 14, still only choosing PT1 and PT3 is that example describes, and inversion signal PTL1 and PTL3 connect with light emitting diode, resistance respectively, add+5V voltage, and being used to indicate the first via and Third Road, to enable high level effective.When upper computer software is chosen the first via, when clicking " unlatching enables ", S1 becomes high level, output enable signal PT1 is also high level, all the other seven road enable signals become low level, enable signal is input to high-speed driving chip UCC37321, and output terminal is low level, the laser instrument 6 conducting work on this road.When opening all passages, program makes the whole output low levels of S1-S8, each road laser instrument 6 work of conducting simultaneously.The output terminal of MC3486 is determined by the differential signal of input.

With reference to Figure 15 and Figure 16, power detection plate 4 comprise for the light signal of induction laser instrument 6 and produce voltage signal photoelectric cell 4-1, receive the voltage signal that photoelectric cell 4-1 produces and the check-out console operational amplifier 4-2 that signal is amplified, with the simulating signal after above-mentioned amplification change into digital signal level analog to digital converter 4-3, above-mentioned digital signal level is sent to check-out console CAN communication module 4-4 on complete machine CAN bus 5.Photoelectric cell 4-1 is used for converting the light signal of laser instrument 6 to voltage signal, operational amplifier 4-2 amplifies voltage signal, then simulating signal is changed into digital signal and send on complete machine CAN bus 5 via CAN communication module 4-4 via analog to digital converter 4-3.Host computer 1 reads the level signal on complete machine CAN bus 5 and sends the adjustment signal with the more backward complete machine CAN of the level ratio that sets in advance bus 5, and Laser Driven plate 3 is adjusted the power of laser instrument 6 after receiving and adjusting signal.

Check-out console operational amplifier 4-2 is two-stage calculation amplifier, as shown in figure 16, be preferably and adopt double operational device OP213, voltage amplifies through first order operational amplifier, then carry out voltage follow and isolation through second level amplifier, be output as homophase output voltage V IN1.VIN1 is sent to analog to digital converter 4-3, and analog to digital converter 4-3 changes into digital signal with simulating signal, and the digital signal of generation is transferred to complete machine CAN bus 5 via CAN communication module 4-4.Host computer 1 reads this level signal from complete machine CAN bus 5, upper computer software with level be set compare, if it is large that the output voltage ratio arranges level, software reduces VIN1 automatically, if it is little that the output voltage ratio arranges level, software is drawn high VIN1 automatically, and then is transferred on Laser Driven plate 3 adjusting signal by complete machine CAN bus 5, again carry out power detection through power detection plate 4, reach thereby form closed loop the purpose that power is adjusted.

The drive plate CAN communication module 3-1 that uses in the utility model and check-out console CAN communication module 4-4, respectively as Fig. 5 and shown in Figure 15, two CAN communication modules form by CAN transceiver and CAN controller.The CAN transceiver is the high-speed CAN transponder chip of band isolation; wherein; preferably adopt the high-speed CAN transponder chip CTM1050 of band isolation; CTM1050 is converted to CAN+, CAN-the differential level of CAN bus, and has isolation features and esd protection effect to the DC 2500V between CAN controller and CAN bus.This chip can connect any a CAN protocol controller, realizes transmitting-receiving and the isolation features of CAN node.Need other components and parts such as optocoupler, DC/DC isolation could realize the CAN transmission circuit of band isolation in design proposal in the past, only need utilize a slice CTM1050 interface chip just can realize CAN transmission circuit with isolation, isolation voltage can reach DC 2500V, its interface is simple, and is easy to use.

The circuit theory schematic diagram of CTP data-driven module 2-5 has been shown in Fig. 4, and wherein, CTP data-driven module 2-5 comprises that a plurality of differential driver 2-51 and its beat by a plurality of differential driver 2-51 configuration output 128 road laser differential signal that version is used.The CTP platemaking machine adopts 128 road laser instruments to beat version, so data integrated circuit board 2 configuration 128 road laser signal LASER DATA0～LASER DATA127.Adopt 32 enhancement mode four-way difference cmos driver chip DS34LV87TM, 128 tunnel laser signal are changed into be differential signal PA1, PB1～PA128, PB128.Because QS34LV87 power consumption is larger, so difference output design realization separately, differential signal is exported to Laser Driven plate 3, describes in detail in this part Laser Driven plate 3 below.with reference to Fig. 4, signal LASER DATA 0～LASER DATA 127 by the configuration of FPGA controller, every four circuit-switched data are transferred to the input end DI1 of an enhancement mode CMOS four tunnel differential driver chip DS34LV87TM, DI2, DI3, DI4, output enable signal OUTEN is input to the EN end, system power-up is all drawn high OUTEN1～OUTEN32 to become high level, thereby the LASER DATA on each road is become the differential signal PA that laser is beaten edition use, PB, differential signal PA, PB is transferred on Laser Driven plate 3, 3 drive laser 6 work of Laser Driven plate, laser instrument 6 sends laser and gets the ablation plate ready, thereby complete the transmission of tiff image.

The utility model take 128 road laser instruments 6 as example, is exported 128 road enable signal PA1, PB1～PA128, PB128 altogether in data integrated circuit board 2.Take eight road laser instruments as example, every block of Laser Driven plate 3 can receive eight road enable signals in Laser Driven plate 3.Wherein, Laser Driven plate 3 has 16 and every and controls eight road laser instruments 6.128 road laser beat a differential signal every eight tunnel that version uses be one group totally ten six groups respectively correspondence be transferred on above-mentioned 16 blocks of Laser Driven plates 3.Therefore, use a blocks of data integrated circuit board 2 to connect 16 blocks of Laser Driven plates 3 in concrete enforcement, in 16 blocks of Laser Driven plates 3 each piece is as an independent system and jointly being arranged on the complete machine wiring backplane, not only easy access and change but also can guarantee the strength and stability of each road signal.The laser instrument of existing CTP platemaking machine has 32 the tunnel, the 48 road and 64 the tunnel, wherein, the CTP platemaking machine fastest transmission of 64 road laser instruments, it is also the bottleneck of a speed, data integrated circuit board 2 of the present utility model is based on the high speed of PCI-E, stable data transmission performance, can realize easily 128 tunnel laser data transmission by said structure, make the message transmission rate of platemaking machine obtain significantly promoting, beat version efficient thereby significantly improved.

In sum, the utility model is not limited to above-mentioned embodiment.Those skilled in the art under the prerequisite that does not break away from spirit and scope of the present utility model, can do some changes and modification.Protection domain of the present utility model should be as the criterion with claim of the present utility model.

Claims (10)

1. CTP platemaking machine circuit control system, comprise host computer (1) and laser instrument (6), it is characterized in that this system also comprises for a data integrated circuit board (2) that receives Output of laser after view data block message that host computer (1) sends and overall treatment and beat the differential signal that version uses, receives above-mentioned laser and break the light signal of Laser Driven plate (3) that differential signal that version uses and output electrical signals control laser instrument (6), induction laser instrument (6) and the power detection plate (4) by the backward host computer of opto-electronic conversion (1) feedback level signal; Between described power detection plate (4) and host computer (1), by complete machine CAN bus (5) communication, Laser Driven plate (3) also is connected to complete machine CAN bus (5) and goes up and receive the adjustment signal that is sent more afterwards by level ratio by host computer (1).

2. CTP platemaking machine circuit control system as claimed in claim 1, it is characterized in that described data integrated circuit board (2) comprises the PCI-E interface module (2-1) that is connected with host computer (1), the FPGA controller (2-2) that carries out data communication with PCI-E interface module (2-1), send the clock frequency conversion and phase-lock module (2-3) of beating the version pulse signal to FPGA controller (2-2), memory module (2-4) for FPGA controller (2-2) access data, the laser data signal that reception FPGA controller (2-2) sends also sends to Laser Driven plate (3) the CTP data-driven module (2-5) that laser is beaten the differential signal of version use.

3. CTP platemaking machine circuit control system as claimed in claim 2, it is characterized in that described clock frequency conversion and phase-lock module (2-3) comprise the cylinder scrambler (2-31) of synchronizeing with the CTP platemaking machine and be used for receiving the reference frequency differential signal that cylinder scrambler (2-31) sends and carry out frequency conversion and phase-lock process after output make the frequency conversion and phase-lock device (2-32) of edition pulse signal.

4. CTP platemaking machine circuit control system as claimed in claim 1, it is characterized in that described power detection plate (4) comprise for the light signal of induction laser instrument (6) and produce voltage signal photoelectric cell (4-1), receive the voltage signal that photoelectric cell (4-1) produces and the check-out console operational amplifier (4-2) that signal is amplified, with the simulating signal after above-mentioned amplification change into digital signal level analog to digital converter (4-3), above-mentioned digital signal level is sent to check-out console CAN communication module (4-4) on complete machine CAN bus (5).

5. CTP platemaking machine circuit control system as described in any one in claim 1 to 4 is characterized in that described Laser Driven plate (3) comprises the drive plate CAN communication module (3-1), the signal and the drive plate microprocessor (3-2) that signal is processed that receive drive plate CAN communication module (3-1) that are connected with complete machine CAN bus (5), is connected to division module (3-3) on drive plate microprocessor (3-2), is connected to a plurality of voltage regulator modules (3-4) on division module (3-3); Also be connected with on above-mentioned drive plate microprocessor (3-2) and make energy control module (3-5) for what receive that laser beats differential signal that version uses, make the enable signal output terminal of energy control module (3-5) be divided into the multichannel identical with the quantity of above-mentioned voltage regulator module (3-4) and corresponding being connected on each voltage regulator module (3-4).

6. CTP platemaking machine circuit control system as claimed in claim 5 is characterized in that described division module (3-3) comprises many output digital to analog converter (3-31) of being connected with drive plate microprocessor (3-2), the reference source (3-32) of the voltage input end that is connected to digital to analog converter (3-31) and be connected to the drive plate operational amplifier (3-33) of each output terminal of digital to analog converter (3-31); Above-mentioned each drive plate operational amplifier (3-33) is connected respectively on each voltage regulator module (3-4).

7. CTP platemaking machine circuit control system as claimed in claim 5, is characterized in that described voltage regulator module (3-4) comprises the first voltage follower (3-41), comparison amplifier (3-42), second voltage follower (3-43), voltage regulator (3-44) and the high-speed driver (3-45) that connects successively according to the electric signal trend; Also be connected with stabilivolt (3-46) on comparison amplifier (3-42); The output terminal that enables of energy control module (3-5) is connected on high-speed driver (3-45), and the voltage output end of high-speed driver (3-45) is connected with laser instrument (6).

8. CTP platemaking machine circuit control system as claimed in claim 5, differential signal controller (3-52) on the output terminal that it is characterized in that the described hyperchannel follower (3-51) that energy control module (3-5) is comprised be connected with drive plate microprocessor (3-2) and be connected to hyperchannel follower (3-51), differential signal controller (3-52) output multi-channel enable signal and correspondence are transferred on each voltage regulator module (3-4).

9. CTP platemaking machine circuit control system as claimed in claim 2 or claim 3 is characterized in that described CTP data-driven module comprises that a plurality of differential driver (2-51) and its beat by a plurality of differential driver (2-51) configuration output 128 road laser differential signal that version is used.

10. CTP platemaking machine circuit control system as claimed in claim 9, is characterized in that described Laser Driven plate (3) has 16 and every and controls eight road laser instruments (6); Described 128 road laser beat a differential signal every eight tunnel that version uses be one group totally ten six groups respectively correspondence be transferred on above-mentioned 16 blocks of Laser Driven plates (3).

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