CN217405910U - Control device of laser - Google Patents
Control device of laser Download PDFInfo
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- CN217405910U CN217405910U CN202123430516.4U CN202123430516U CN217405910U CN 217405910 U CN217405910 U CN 217405910U CN 202123430516 U CN202123430516 U CN 202123430516U CN 217405910 U CN217405910 U CN 217405910U
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Abstract
The embodiment of the utility model discloses a control device of a laser, which at least comprises a control module, an interface module, a driving module, a laser excitation module and a light path conditioning module, wherein the interface module at least comprises a comprehensive interface; the comprehensive interface is used for transmitting the received external signal to the control module; the control module is used for determining a control signal according to an external signal and transmitting the control signal to the driving module; the driving module is used for driving the laser excitation module to work according to the control signal; the laser excitation module is used for generating two kinds of laser with different wavelengths under the driving of the driving module; the light path conditioning module is used for processing the lasers with two different wavelengths, outputting the laser beam combining lasers with the two different wavelengths, and realizing the control and application of the lasers with the two different wavelengths by adopting one set of control and drive system, thereby improving the accuracy of the laser beam combining, avoiding the need of an expensive lens assembly and greatly reducing the use cost.
Description
Technical Field
The utility model relates to a laser instrument technical field especially relates to a controlling means of laser instrument.
Background
The dual wavelength semiconductor laser belongs to the class 4 laser instrument. For example, some dual-wavelength semiconductor lasers emit laser radiation at wavelengths of 915nm (or around 915 nm) and 976nm (or around 976 nm), and the optical power radiated by the output head is 1000W. Direct or indirect exposure to such light intensities can cause damage to the eyes or skin. Although this radiation is not visible, the beam can cause unrecoverable damage to the retina or cornea of the eye.
At present, in the field of laser application, optical lenses are mostly adopted, and the output of two lasers is combined into a single light beam through space so as to meet different process requirements.
Fig. 1 is a schematic structure of a dual-laser composite wavelength system in the prior art, and as shown in fig. 1, the dual-laser composite wavelength system includes a power supply system, a control system, two independent lasers and a lens, the two lasers need to be respectively adjusted by the control system so that the two lasers can synchronously work to generate two paths of laser light, then the two paths of laser light enter the lens with different incident angles, and a complex optical lens group is required inside the lens to complete the polymerization of light beams. In order to ensure higher transmissivity and reduce loss, the lens material must be made of a high-density raw material, which results in high manufacturing cost; in addition, the mirror surface is plated with a super wear-resistant material with a proper wavelength; meanwhile, the light beams are lost inevitably through the lens group, the energy is converted into heat, and the heat is eliminated through the lens heat dissipation assembly, so that the spatial beam combination is realized.
In the process, the two lasers generate asynchronous delay due to different excitation power supplies and driving signals, and the driving output inevitably causes a certain time gap, so that the accuracy of outputting the combined laser is low.
SUMMERY OF THE UTILITY MODEL
To the technical problem, the embodiment of the utility model provides a controlling means of laser instrument.
The embodiment of the utility model provides a control device of laser instrument, include: the device comprises a control module, an interface module, a driving module, a laser excitation module and a light path conditioning module, wherein the interface module at least comprises a comprehensive interface;
the comprehensive interface is used for transmitting the received external signal to the control module;
the control module is used for determining a control mode of the laser corresponding to the external signal according to the external signal, determining a control signal corresponding to the control mode according to the control mode of the laser, and transmitting the control signal to the driving module;
the driving module is used for driving the laser excitation module to work according to the control signal;
the laser excitation module is used for generating two lasers with different wavelengths under the driving of the driving module;
the light path conditioning module is used for processing the lasers with two different wavelengths and outputting combined lasers of the lasers with the two different wavelengths.
Optionally, the integrated interface is configured to connect to an external control device, where the external signal includes an external control signal and a laser status return signal sent by the external control device, where the external control signal at least includes one or more of a laser control mode selection signal, a laser output enable signal, an indication light control signal, or a laser power setting signal; the laser state return signal at least comprises a laser output state signal or a laser alarm state signal.
Optionally, the interface module further includes a safety interface, where the safety interface is configured to connect to an external control device and receive an interlock signal or a circuit power-on signal sent by the external control device, where the circuit power-on signal is a power-on switch of a control circuit inside a laser, and the circuit power-on signal is controlled by a device associated with the laser. Optionally, the interface module further comprises a communication interface, and the communication interface is used for being connected with an upper computer through a serial interface.
Optionally, the control device further includes a power conversion module, where the power conversion module is configured to convert an input ac power into a dc power, and the dc power is configured to supply power to the control module and the driving module.
Optionally, the control device further includes an electrical protection module, where the electrical protection module is configured to receive an external ac power supply, perform lightning protection processing and filtering processing on the ac power supply, and output the processed ac power supply to the power conversion module.
Optionally, the laser excitation module comprises at least one of optical excitation, gas discharge excitation, chemical excitation or nuclear energy excitation.
Optionally, the control device further includes an indication module, the indication module is connected to the control module, and the indication module is configured to indicate a state of the laser.
Optionally, the control module at least includes a dual-processor architecture, wherein the dual-processor architecture at least includes a processing chip and a programmable logic device, the processing chip is used for controlling and communicating with the outside, and the programmable logic device is used for performing internal logic operations.
Optionally, the control device further includes a detection module, the detection module is connected to the control module, and the detection module is configured to collect laser working data through a sensor and send the laser working data to the control module, so that the control module determines a working state of the laser according to the laser working data.
The embodiment of the utility model provides a control device of laser instrument, including control module, interface module, drive module, laser excitation module and light path conditioning module, interface module includes comprehensive interface at least; the comprehensive interface is used for transmitting the received external signal to the control module; the control module is used for determining a control mode of the laser corresponding to the external signal according to the external signal, determining a control signal corresponding to the control mode according to the control mode of the laser, and transmitting the control signal to the driving module; the driving module is used for driving the laser excitation module to work according to the control signal; the laser excitation module is used for generating two kinds of laser with different wavelengths under the driving of the driving module; light path conditioning module is used for handling the laser of two kinds of different wavelength, exports closing of the laser of two kinds of different wavelength and restraints laser, the embodiment of the utility model provides an adopt one set of control and actuating system to realize the control and the application of two kinds of wavelength lasers, simplified hardware circuit greatly, avoid adopting different excitation power supply and drive signal among the prior art to drive, improved and closed the accuracy of restrainting laser, and no longer need expensive lens barrel spare, reduce use cost by a wide margin.
Drawings
FIG. 1 is a schematic structural diagram of a dual-laser composite wavelength system in the prior art;
fig. 2 is a block diagram of a control device of a laser provided in an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the present invention.
Referring to fig. 2, a block diagram of a control device of a laser according to an embodiment of the present invention is shown, in which the control device of the laser at least includes: the device comprises a control module 206, an interface module, a driving module 203, a laser excitation module 204 and an optical path conditioning module 205, wherein the interface module at least comprises a comprehensive interface 207;
the integrated interface 207 is used for transmitting the received external signal to the control module;
the control module 206 is configured to determine a control mode of the laser corresponding to the external signal according to the external signal, determine a control signal corresponding to the control mode according to the control mode of the laser, and transmit the control signal to the driving module;
specifically, a control module receives an external signal through an I/O interface, matches a proper control mode, generates a corresponding signal according to a control signal required by the operation of a laser, comprises parameters such as frequency, amplitude, time sequence and the like of the signal, and transmits the signal to a driving module through a cable;
the driving module 203 is used for driving the laser excitation module to work according to the control signal;
specifically, the driving module 203 is a constant current driving, and adopts a closed loop control, and the output current is constant at a set value, set by the control module, and is in an analog form.
The laser excitation module 204 is used for generating laser with two different wavelengths under the driving of the driving module 203; the two different wavelengths of laser light may be laser light of wavelengths 915nm (or around 915 nm) and 976nm (or around 976 nm).
The optical path conditioning module 205 is configured to process the two lasers with different wavelengths and output a combined laser of the two lasers with different wavelengths.
Specifically, the optical path conditioning module comprises a stripper, namely a part of laser coupled into the optical fiber cladding in the laser output by the pumping source (laser excitation module) is stripped; and the optical fiber dissolving point is also included, namely the optical fibers among different optical devices need to be welded so as to realize the smoothness of an optical path.
Optionally, the integrated interface 207 is configured to connect to an external control device, where the external signal includes an external control signal and a laser status return signal sent by the external control device, where the external control signal at least includes one or more of a laser control mode selection signal, a laser output enable signal, an indication light control signal, or a laser power setting signal; the laser status return signal includes at least a laser output status signal or a laser alarm status signal.
Specifically, the indication light control signal is specifically a red visible light, and when the wavelength of the laser light belongs to the invisible light range, the laser device usually outputs the red visible light in the same channel, so as to check the on/off state of the light path and adjust the path required by the process.
Optionally, the interface module further includes a safety interface 208, where the safety interface is configured to connect to an external control device and receive an interlock signal or a circuit power-on signal sent by the external control device, where the circuit power-on signal is a power-on switch of an internal control circuit of the laser, and the circuit power-on signal is controlled by a device associated with the laser.
The interlocking signal is specifically used for synchronous control of external control equipment, for example, an external integrated control system collects a fault signal of the water cooling machine, when the water cooling machine is in fault, the connecting signal is disconnected, and the laser cannot output laser.
Optionally, the interface module further includes a communication interface 209, and the communication interface 209 is used for connecting with an upper computer through a serial interface.
The communication interface can be an RS232 serial interface, and is used for realizing human-computer interaction through software on the upper computer through serial communication.
Optionally, the control device further includes an electrical protection module 201, and the electrical protection module is configured to receive an external ac power supply, perform lightning protection processing and filtering processing on the external ac power supply, and output the processed result to the power conversion module.
The electric protection device can be used for preventing lightning stroke and protecting a circuit.
Optionally, the control device further includes a power conversion module 202, which is configured to convert an input ac power into a dc power, and the dc power is configured to supply power to the control module and the driving module.
The power conversion module is used for AC/DC power conversion, namely, inputting an alternating current power supply and outputting a direct current power supply. The power conversion circuit may be a full-bridge rectifier circuit or a half-bridge rectifier circuit.
Optionally, the laser excitation module 204 includes at least one of optical excitation, gas discharge excitation, chemical excitation, or nuclear energy excitation.
The laser excitation module is also a pumping source, namely an electro-optical conversion device, and the pumping source is used for exciting a laser working substance and pumping activated particles from a ground state to a high energy level so as to realize population inversion. Depending on the working substance and the operating conditions of the laser. Different actuation modes and actuation means may be employed. The excitation method comprises 4 excitation modes, namely optical excitation (optical pumping), gas discharge excitation, chemical excitation and nuclear energy excitation.
Optionally, the control device further comprises an indication module 210, which is connected to the control module and is used for indicating the laser status.
Specifically, the indicating module is an LED or the like, i.e., a laser status indicator, and when the laser is powered on, the laser outputs, and fails, the corresponding indicator lights are turned on, for example, the laser is powered on, the indicator light is a green light, and if the laser fails, a red light is output.
Optionally, the control module 206 comprises at least a dual processor architecture, wherein the dual processor architecture comprises at least a processing chip for controlling communication with the outside and a programmable logic device for performing internal logic operations.
Specifically, the dual processor architecture employs a dual MCU architecture, namely: STM32 series ARM chip (high performance, low cost, low power consumption ARM for embedded application design)
) And a maxIIz series CPLD (complex programmable logic device) which adopts CMOS EPROM, EEPROM, flash memory, SRAM and other programming technologies, thereby forming a programmable logic device with high density, high speed and low power consumption. STM32 series ARM chip is mainly responsible for control and permitting to communicate with the outside, and CPLD is mainly responsible for fast logic operation.
Optionally, the control device further includes a detection module, the detection module is connected to the control module, and the detection module is configured to collect laser working data through the sensor, and send the laser working data to the control module, so that the control module determines a working state of the laser according to the laser working data.
Specifically, the detection module comprises a peripheral auxiliary circuit which is connected with sensors such as light, electricity, temperature and humidity and acquires working data of the laser.
The embodiment of the utility model provides an in, adopt this dual wavelength semiconductor laser's control and actuating system, mainly possess following several advantages: compared with a system formed by two sets of control devices, a power supply device (which needs to provide different power supply parameters for supplying power to different lasers) and a driving device (which needs to provide different driving parameters for driving different lasers), the system greatly simplifies hardware circuits and cable connection, and obviously reduces fault points.
The dual-wavelength pump source chip adopts serial connection (laser excitation chips with two wavelengths are sequentially connected, and a "+" - "pin is reserved outwards for connecting an excitation power supply) and power supply, and only one driving module and one AC/DC power supply are needed, so that a driving circuit and a power supply system are simplified.
The embodiment of the utility model provides a possess whole signal interface of conventional laser instrument control and realize corresponding the function, terminal output no longer needs expensive lens subassembly, reduces use cost by a wide margin.
The embodiment of the utility model provides a controlling means of laser instrument adopts one set of control and actuating system to realize the control and the application of two kinds of wavelength laser instruments, has simplified the hardware circuit greatly, avoids adopting the excitation power supply and the drive signal of the difference among the prior art to drive, has improved the accuracy of closing a bundle of laser, and no longer need expensive camera lens subassembly, reduces use cost by a wide margin.
The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (10)
1. A control apparatus for a laser, characterized in that: the control device includes at least: the device comprises a control module, an interface module, a driving module, a laser excitation module and a light path conditioning module, wherein the interface module at least comprises a comprehensive interface;
the comprehensive interface is used for transmitting the received external signal to the control module;
the control module is used for determining a control mode of the laser corresponding to the external signal according to the external signal, determining a control signal corresponding to the control mode according to the control mode of the laser, and transmitting the control signal to the driving module;
the driving module is used for driving the laser excitation module to work according to the control signal;
the laser excitation module is used for generating two lasers with different wavelengths under the driving of the driving module;
the light path conditioning module is used for processing the lasers with two different wavelengths and outputting combined lasers of the lasers with the two different wavelengths.
2. The control device of the laser according to claim 1, characterized in that: the integrated interface is used for connecting an external control device, the external signal comprises an external control signal and a laser state return signal which are sent by the external control device, wherein the external control signal at least comprises one or more of a laser control mode selection signal, a laser output enabling signal, an indication light control signal or a laser power setting signal; the laser state return signal at least comprises a laser output state signal or a laser alarm state signal.
3. The control device of the laser according to claim 1, characterized in that: the interface module further comprises a safety interface, wherein the safety interface is used for connecting an external control device and receiving an interlocking signal or a circuit power-on signal sent by the external control device, the circuit power-on signal is a power-on switch of an internal control circuit of the laser, and the circuit power-on signal is controlled by a device associated with the laser.
4. The control device of a laser according to claim 1, characterized in that: the interface module further comprises a communication interface, and the communication interface is used for being connected with an upper computer through a serial interface.
5. The control device of a laser according to claim 1, characterized in that: the control device further comprises a power supply conversion module, wherein the power supply conversion module is used for converting an input alternating current power supply into a direct current power supply, and the direct current power supply is used for supplying power to the control module and the driving module.
6. The control device of the laser according to claim 5, characterized in that: the control device further comprises an electrical protection module, wherein the electrical protection module is used for receiving an external alternating current power supply, performing lightning protection processing and filtering processing on the external alternating current power supply and outputting the external alternating current power supply to the power conversion module.
7. The control device of a laser according to claim 1, characterized in that: the laser excitation module at least comprises one of optical excitation, gas discharge excitation, chemical excitation or nuclear energy excitation.
8. The control device of a laser according to claim 1, characterized in that: the control device further comprises an indication module, the indication module is connected with the control module, and the indication module is used for indicating the state of the laser.
9. The control device of a laser according to claim 1, characterized in that: the control module at least comprises a dual-processor framework, wherein the dual-processor framework at least comprises a processing chip and a programmable logic device, the processing chip is used for controlling and communicating with the outside, and the programmable logic device is used for carrying out internal logic operation.
10. The control device of a laser according to claim 1, characterized in that: the control device further comprises a detection module, the detection module is connected with the control module, and the detection module is used for collecting laser working data through a sensor and sending the laser working data to the control module, so that the control module can determine the working state of the laser according to the laser working data.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123430516.4U CN217405910U (en) | 2021-12-30 | 2021-12-30 | Control device of laser |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123430516.4U CN217405910U (en) | 2021-12-30 | 2021-12-30 | Control device of laser |
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| CN217405910U true CN217405910U (en) | 2022-09-09 |
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| CN202123430516.4U Active CN217405910U (en) | 2021-12-30 | 2021-12-30 | Control device of laser |
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- 2021-12-30 CN CN202123430516.4U patent/CN217405910U/en active Active
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