CN204347549U

CN204347549U - A kind of bus type laser control system

Info

Publication number: CN204347549U
Application number: CN201420803084.8U
Authority: CN
Inventors: 陆荣鑑
Original assignee: JIANGSU LINGJIAN LASER TECHNOLOGY Co Ltd
Current assignee: JIANGSU LINGJIAN LASER TECHNOLOGY Co Ltd
Priority date: 2014-12-18
Filing date: 2014-12-18
Publication date: 2015-05-20
Anticipated expiration: 2024-12-18

Abstract

The utility model relates to a kind of bus type laser control system, belongs to laser application technique field.This system comprises: host computer, bus and laser controller; Laser controller comprises power detection module, temperature detecting module, pressure detection module, fan frequency converter, vacuum pump frequency converter and Switching Power Supply; Power detection module, temperature detecting module, pressure detection module are connected with bus after connecting analog-to-digital conversion module respectively; Fan frequency converter, vacuum pump frequency converter are connected with bus with the control port of Switching Power Supply.The all signal of the bus type laser control system that the utility model provides is digital signal, and by bus transfer, therefore, its antijamming capability is strengthened greatly, can transmission range also greatly improve, and then can realize Long-distance Control.

Description

A kind of bus type laser control system

Technical field

The utility model relates to a kind of bus type carbon dioxide laser control system, belongs to laser application technique field.

Background technology

Eighties of last century eighties, CO2 laser instrument obtains develop rapidly in nearly decades after occurring.CO2 efficiency of laser is high, light velocity quality is good, power bracket is large, can continuously again energy impulse export, and operating cost is low, and CO2 laser instrument coordinated the CO2 laser-processing system formed that it is had a wide range of applications in material processing field with numerically-controlled machine afterwards.

Constantly universal along with CO2 laser instrument, the requirement of materials processing industry to the performance of laser lathe and control system is also more and more higher, and the principal element affecting control system performance is exactly between system and the communication of internal system.Communication in the market between laser instrument modules inside, modules and between upper and lower computer is all adopt simulating signal, and this communication mode or Signal transmissions all have open defect, as follows:

1. there is a lot of sensor in Optical Maser System, as air pressure, electric current, voltage, temperature, humidity and laser power etc., the output had in these sensors is simulating signal, some output digit signals, these signals of existing laser instrument are all directly be connected with control chip I/O mouth by wire, signal wire can be caused too much, and I/O mouth takies too much, makes the efficiency comparison of total system low.

2. these simulating signals of existing laser instrument can be restricted on the distance of transmission.Must not more than 5M to the distance of Laser Control System from each position of lathe, not so signal just distortion, laser lathe can not normal operation, lathe is obstructed very large when designing.

3. in industrial environment, all there is the electromagnetic interference (EMI) of high frequency almost everywhere, especially the noise that is more easily subject to of simulating signal, after disturbed rub-out signal passes to laser instrument, control system will provide corresponding Wrong control signal according to rub-out signal, cause and seriously control error, some sensor signal is because itself is fainter, control system also could will use through amplifying after receiving this signal, but together amplify together with noise itself in amplification process, above-mentioned fault phenomenon is more serious, even can not carry out work.

4. laser instrument has different working methods, as continuous wave, gate pulse, high power pulse etc., also have many fault-signals simultaneously, these all belong to switching value, existing Laser Control System is all directly controlled by I/O mouth, causes connecting line too much, because the interference of the industrial environment at these wire places is also larger, the saltus step of on-off model may be caused, whole system can not be stablized.

5. existing Laser Control System is when controlling each functional module, is also controlled by analog quantity, but not enough for the driving force of simulating signal own, well can not control, sometimes need to add multiple driving circuit.

6. existing laser instrument is sensor signal, fault alarm signal etc. is all directly connect control to system control chip I/O mouth processed, not only take too much I/O mouth, also make whole system structure uncertain, disorderly and unsystematic, when system goes wrong, be unfavorable for system failure detection.

The existence of above-mentioned technical matters, when signal when sensor passes or the control signal from control system are owing to disturbing inaccurate, the normal work of laser instrument will certainly be had influence on, the processing technology of Laser Processing is also just without collateral security, in current industrial processing technology field, Laser Processing is fast with its process velocity, cut quality is high and the process-cycle is short etc., and feature maintains the leading position, if the problems referred to above cannot be solved very well, will be unfavorable for Laser Processing development from now on.

Summary of the invention

The technical problems to be solved in the utility model is, proposes the laser control system that a kind of bus carrys out transmission of signal.

The utility model is the technical scheme solving the problems of the technologies described above proposition: a kind of bus type laser control system, comprising: host computer and the laser controller be connected by bus with described host computer; Described laser controller comprises power detection module, temperature detecting module, pressure detection module, fan frequency converter, vacuum pump frequency converter and Switching Power Supply; Be connected with described bus after described power detection module, temperature detecting module, pressure detection module connect analog-to-digital conversion module respectively; Described fan frequency converter, vacuum pump frequency converter are connected with described bus with the control port of Switching Power Supply.

Such scheme further improves and is: described bus is CAN, 485 buses or Ethernet.

Such scheme further improves and is: described laser controller also comprises fault alarm module; Described fault alarm module is also connected with described bus.

Such scheme further improves and is: described laser controller also comprises humidity detecting module, voltage detection module and current detection module; Described humidity detecting module, voltage detection module and current detection module are also connected with described bus

Bus type laser control system of the present utility model, becomes analog signal processing digital signal to solve distance limit in transmitting procedure, is easily disturbed, the problem such as distortion, can also realize Long-distance Control.Further, bus-structured should greatly reduce I/O mouth in system take quantity, greatly provide work efficiency.Communication distance between laser instrument and host computer provides greatly, and signal stabilization, be not easily disturbed.Meanwhile, the topological simplicity of bus type structure, like this, when there being fault to occur, is also easier to investigation.

Accompanying drawing explanation

Be described further of the present utility model below in conjunction with accompanying drawing.

Fig. 1 is the utility model preferred embodiment structural representation.

Fig. 2 is pressure detection module circuit diagram in Fig. 1.

Fig. 3 is power in Fig. 1, temperature and humidity detecting module circuit diagram.

Fig. 4 is the control IC circuit diagram of Fig. 1 breaker in middle power supply.

Number in the figure is schematically as follows: 1-host computer, 2-bus, 3-power detection module, 4-pressure detection module, 5-temperature detecting module, 6-humidity detecting module 7-fan frequency converter, 8-vacuum pump frequency converter, 9-Switching Power Supply, 10-voltage and current detection module.

Embodiment

The bus type laser control system of the present embodiment as shown in Figure 1, comprising: host computer 1 and the laser controller be connected by bus 2 with host computer 1.

Laser controller wherein has the status detection function modules such as power detection module 3, temperature detecting module 5, pressure detection module 4, humidity detecting module 6, voltage and current detection module 10.

Meanwhile, also there is the laser control functional modules such as fan frequency converter 7, vacuum pump frequency converter 8 and Switching Power Supply 9.

As shown in fig. 1, power detection module 3, temperature detecting module 5, pressure detection module 4, humidity detecting module 6, voltage and current detection module 10, fan frequency converter 7, vacuum pump frequency converter 8 and Switching Power Supply 9 are all connected in bus 2; Simulating signal then installs A/D modular converter additional.All functions module is all by bus 2 and host computer 1 communication.

Bus in the present embodiment adopts CAN, and CAN belongs to the category of fieldbus, the serial communication network that it is a kind of effective support distributed AC servo system or controls in real time.Have now and have direct modular CAN on the market, directly just can realize CAN communication by interface.Also can change 485 buses or Ethernet or other buses as required into, its effect there is no difference.

Meanwhile, laser controller also comprises fault alarm module (not shown); This fault alarm module is also connected with bus 2.

As shown in Figure 2, pressure detection module 4 is made up of air pressure transmitter and amplifying circuit, air pressure signal to become after electric signal through amplifying by air pressure transmitter, delivers to DSPIC33E80, by DSPIC33E80 this signal is changed into CAN protocol signal and sends to host computer 1 by CAN.

As shown in Figure 3, power detection module 3 is made up of photoelectric sensor and amplifying circuit, the output signal of photoelectric sensor is after amplifying, deliver to DPSIC, change into 485 protocol signals, sent to the DSPIC33E80 of pressure detection module 4 by 485 buses, then by DSPIC33E80 this signal changed into CAN protocol signal and send to host computer 1 by CAN.

Same, as temperature detecting module in Fig. 35 and humidity detecting module 6 are detected by digital hygro sensor, then signal is sent to DSPIC, change into 485 protocol signals, sent to the DSPIC33E80 of pressure detection module 4 by 485 buses, then by DSPIC33E80 this signal changed into CAN protocol signal and send to host computer 1 by CAN.

Laser switching source 9 includes voltage and current detection module 10, therefore without the need to other setting, the control IC of Switching Power Supply 9 as shown in Figure 4, by DSPIC33E as processor, the oneself state of Switching Power Supply 9 is uploaded by CAN, and receives the state being adjusted Switching Power Supply 9 by the instruction that CAN is descending.

Fan frequency conversion machine 7 and 8, vacuum pump frequency converter employing model are the E800-0007 T3 type frequency converter of ALLRED transmission, himself is namely with 485 modules, therefore, this two-way 485 can be connected to the DSPIC33E80 of pressure detection module 4, change into CAN agreement in the lump.

During system works, each detection module monitoring laser instrument running status, and issue host computer 1 by bus 2, host computer then by controlling the laser control functional modules such as fan frequency converter 7, vacuum pump frequency converter 8 and Switching Power Supply 9, realizes the control to laser power and duty.Like this, because all signals are digital signal, and transmit by bus 2, therefore, its antijamming capability is strengthened greatly, can transmission range also greatly improve, and then, can Long-distance Control be realized.

Host computer CPU adopts Cortex-A8 framework, dominant frequency 1000MHz, processing speed is fast, and arithmetic capability is strong, has the DDR II of 512MB and the NandFlash of 256M, storage space is enough large, operating system selects WINCE6.0, Special industrial touch screen operating, compares numerous and diverse win7, winXP, only retain the function that application needs, system is more succinct efficient.

Of the present utility modelly be not limited to the various embodiments described above, all employings are equal to the technical scheme of replacing and being formed, and all drop on the protection domain of the utility model requirement.

Claims

1. a bus type laser control system, is characterized in that comprising: host computer, the laser controller be connected by bus with described host computer; Described laser controller comprises power detection module, temperature detecting module, pressure detection module, fan frequency converter, vacuum pump frequency converter and Switching Power Supply; Be connected with described bus after described power detection module, temperature detecting module, pressure detection module connect analog-to-digital conversion module respectively; Described fan frequency converter, vacuum pump frequency converter are connected with described bus with the control port of Switching Power Supply.

2. bus type laser control system according to claim 1, is characterized in that: described bus is CAN, 485 buses or Ethernet.

3. bus type laser control system according to claim 1, is characterized in that: described laser controller also comprises fault alarm module; Described fault alarm module is also connected with described bus.

4. bus type laser control system according to claim 1, is characterized in that: described laser controller also comprises humidity detecting module, voltage detection module and current detection module; Described humidity detecting module, voltage detection module and current detection module are also connected with described bus.