CN108683068B

CN108683068B - Laser control method, electronic control device, laser drilling equipment and storage medium

Info

Publication number: CN108683068B
Application number: CN201810466986.XA
Authority: CN
Inventors: 何高锋; 黎永坚; 蒋峰
Original assignee: Maxphotonics Co Ltd
Current assignee: Maxphotonics Co Ltd
Priority date: 2018-03-14
Filing date: 2018-05-16
Publication date: 2020-06-09
Anticipated expiration: 2038-05-16
Also published as: CN108683068A; WO2019218634A1

Abstract

The embodiment of the invention discloses a control method of a laser, an electronic control device, the laser, laser drilling equipment and a storage medium. The control method of the laser comprises the following steps: collecting a rising edge or a falling edge of a control signal to form a capture signal; outputting laser pulses according to the capture signals; and starting timing when outputting one laser pulse, allowing to output the next laser pulse when the time obtained by timing reaches the minimum period of the laser pulse, and stopping outputting the next laser pulse when the time obtained by timing exceeds the maximum period of the laser pulse. The control method, the electronic control device, the laser drilling equipment and the laser disclosed by the embodiment of the invention can output the laser pulse along with the control signal on one hand, and can limit the period of the laser pulse between the minimum period and the maximum period on the other hand, thereby being beneficial to ensuring the working performance of the laser and reducing potential safety hazards.

Description

Laser control method, electronic control device, laser drilling equipment and storage medium

Cross-referencing

The present application is filed and claimed as priority based on chinese patent application having application number CN201810209906.2 and application date 2018, 03 and 14, and the entire contents of the chinese patent application are incorporated herein by reference.

Technical Field

The technical scheme disclosed by the embodiment of the invention relates to the technical field of lasers, in particular to a control method of a laser, an electronic control device, the laser, laser drilling equipment and a storage medium.

Background

At present, the power of various lasers is getting larger and larger, and the lasers are widely applied to the fields of military, medical treatment, industrial manufacturing and the like. Typically, the laser outputs laser pulses in accordance with a received control signal.

In the process of researching the present invention, the inventor finds that the laser pulse of the laser in the prior art is determined by the received control signal, the minimum period and the maximum period of the laser pulse cannot be limited, and therefore, the working performance of the laser is difficult to guarantee, and potential safety hazard exists.

Disclosure of Invention

The control method of the laser, the electronic control device, the laser drilling equipment and the storage medium can be used for limiting the minimum period and the maximum period of the laser pulse.

One or more embodiments of the present invention disclose a method of controlling a laser, including: collecting a rising edge or a falling edge of a control signal to form a capture signal; outputting laser pulses according to the capture signals; and starting timing when outputting one laser pulse, allowing to output the next laser pulse when the time obtained by timing reaches the minimum period of the laser pulse, and stopping outputting the next laser pulse when the time obtained by timing exceeds the maximum period of the laser pulse.

In one or more embodiments of the invention, the point in time of the output laser pulse follows the point in time of the captured rising or falling edge on the capture signal.

In one or more embodiments of the invention, a minimum period timing signal is formed while timing, and the phase of the minimum period timing signal when timing is stopped is opposite to the phase of the minimum period timing signal when timing is started; and forming a minimum period limiting signal in reverse phase with the minimum period timing signal, and allowing the next laser pulse to be output when the phase of the minimum period limiting signal is changed after the timing is started.

In one or more embodiments of the invention, a maximum period timing signal is formed while timing, and the phase of the maximum period timing signal when timing is stopped is opposite to the phase of the maximum period timing signal when timing is started; and forming a maximum period limiting signal in reverse phase with the maximum period timing signal, and stopping outputting the next laser pulse when the phase of the maximum period limiting signal changes after timing is started.

One or more embodiments of the present invention also disclose an electronic control device of a laser, including: the system comprises a Micro Control Unit (MCU), a Field Programmable Gate Array (FPGA), one or more digital-to-analog converters and a control interface; the micro control unit is communicated with the field editable logic gate array; the field editable logic gate array performs digital-to-analog conversion through the one or more digital-to-analog converters and communicates with the application equipment control board card and the upper computer through the control interface; the electronic control device of the laser is used for controlling and realizing that: collecting a rising edge or a falling edge of a control signal to form a capture signal; outputting laser pulses according to the capture signals; and starting timing when outputting one laser pulse, allowing to output the next laser pulse when the time obtained by timing reaches the minimum period of the laser pulse, and stopping outputting the next laser pulse when the time obtained by timing exceeds the maximum period of the laser pulse.

In one or more embodiments of the invention, the electronic control means of the laser are also adapted to control the implementation of: the time point of outputting the laser pulse follows the time point of capturing the rising edge or the falling edge on the capturing signal.

In one or more embodiments of the invention, the electronic control means of the laser are also adapted to control the implementation of: forming a minimum period timing signal while timing, wherein the phase of the minimum period timing signal when timing is stopped is opposite to the phase of the minimum period timing signal when timing is started; and forming a minimum period limiting signal in reverse phase with the minimum period timing signal, and allowing the next laser pulse to be output when the phase of the minimum period limiting signal is changed after the timing is started.

In one or more embodiments of the invention, the electronic control means of the laser are also adapted to control the implementation of: forming a maximum period timing signal while timing, wherein the phase of the maximum period timing signal when timing is stopped is opposite to the phase of the maximum period timing signal when timing is started; and forming a maximum period limiting signal in reverse phase with the maximum period timing signal, and stopping outputting the next laser pulse when the phase of the maximum period limiting signal changes after timing is started.

In one or more embodiments of the invention, the electronic control means of the laser are also adapted to control the implementation of: and starting to time the working time of the pumping source when outputting a laser pulse, and turning off the pumping source by the laser when the working time reaches the maximum working time.

One or more embodiments of the invention also disclose a laser, which comprises an optical path module and a circuit module, and the laser applies any one of the control methods of the laser.

One or more embodiments of the present invention also disclose a laser drilling apparatus for drilling a hole in a solar cell film, the laser drilling apparatus including: the device comprises a laser, an optical system, a working platform and a control board card; the control board card is used for controlling the laser and/or the optical system and/or the working platform; and laser beams generated by the laser are focused to the solar cell film on the working platform through the optical system, so that the solar cell film is punched. The laser in the laser drilling equipment adopts any one of the control methods of the laser.

One or more embodiments of the present invention also disclose a non-transitory computer-readable storage medium having stored therein computer instructions adapted to be loaded by a processor to implement any of the above-described methods of controlling a laser.

Compared with the prior art, the technical scheme disclosed by the invention mainly has the following beneficial effects:

in the embodiment of the present invention, by starting timing when outputting one laser pulse and allowing the next laser pulse to be output only when the time obtained by the timing reaches the minimum period of the laser pulse, the period of the laser pulse is not less than the minimum period, that is, the frequency of the laser pulse does not exceed the set maximum frequency. And stopping outputting the next laser pulse when the time obtained by timing exceeds the maximum period of the laser pulse, so that the period of the laser pulse does not exceed the maximum period, namely the frequency of the laser pulse is not less than the set lowest frequency. The period of the control signal has uncertainty, and the control method of the laser in the embodiment can output the laser pulse along with the control signal on one hand, and can limit the period of the laser pulse between the minimum period and the maximum period on the other hand, thereby being beneficial to ensuring the working performance of the laser and reducing potential safety hazards.

Drawings

FIG. 1 is a diagram illustrating a method for controlling a laser according to an embodiment of the present invention;

FIG. 2 is a diagram illustrating control signals, capture signals, and laser pulses in accordance with an embodiment of the present invention;

FIG. 3 is a diagram illustrating a control signal, a capture signal, a minimum period timing signal, and a minimum period limit signal according to an embodiment of the present invention;

FIG. 4 is a diagram illustrating a control signal, a capture signal, a minimum period timing signal, and a minimum period limit signal according to an embodiment of the present invention;

FIG. 5 is a diagram illustrating a control signal, a capture signal, a maximum period timing signal, and a maximum period limit signal according to an embodiment of the present invention;

FIG. 6 is a diagram illustrating a control signal, a capture signal, a maximum period timing signal, and a maximum period limit signal according to an embodiment of the present invention;

FIG. 7 is a diagram illustrating control signals, capture signals, and maximum on-time according to an embodiment of the present invention;

FIG. 8 is a schematic diagram of an electronic control device for a laser according to an embodiment of the present invention;

FIG. 9 is a diagram of a control device for a laser according to an embodiment of the present invention;

FIG. 10 is a schematic diagram of a control device for a laser according to another embodiment of the present invention;

FIG. 11 is a schematic diagram of a laser in accordance with an embodiment of the present invention;

FIG. 12 is a schematic view of a laser drilling apparatus according to an embodiment of the present invention;

FIG. 13 is a diagram illustrating the effect of a laser drilling apparatus according to the prior art after drilling holes on a solar cell film;

fig. 14 is a diagram illustrating the effect of the laser drilling device of the present invention after drilling holes on the solar cell film.

Description of reference numerals: 101-acquisition module, 102-pulse control module, 103-period timing module, 201-acquisition module, 202-pulse control module, 203-period timing module, 204-limit module, 205-working time timing module, 300-electronic control device of laser, 301-micro control unit, 302-field programmable gate array, 303-digital-analog converter, 304-control interface, 400-application equipment control board card, 500-upper computer, 10-optical path module, 20-circuit module, 11-pumping source, 12-resonant cavity, 13-optical fiber amplifier, 14-laser output head, 15-photoelectric detector, 21-acousto-optic control circuit, 22-output control circuit, 23-pumping drive circuit, 24-protection circuit, 121-first beam combiner, 122-high reflector, 123-gain fiber, 124-low reflectivity fiber grating, 125-acousto-optic switch, 131-second beam combiner, 132-pump laser, 30-laser, 40-optical system, 50-working platform and 60-control board card.

Detailed Description

To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The terms "first", "second", and the like in the claims, the description, and the drawings of the specification are used for distinguishing different objects and not for describing a particular order.

The embodiment of the invention discloses a control method of a laser, which is applied to a fiber laser, but the control method of the laser disclosed by the invention is not limited to be applied to the fiber laser. The technical solution in this embodiment will be described below with reference to the accompanying drawings, and the control method of the laser device in the detailed description is only a preferred embodiment, and not all possible embodiments of the present invention.

Referring to fig. 1 and fig. 2, fig. 1 is a schematic diagram of a control method of a laser according to an embodiment of the invention, and fig. 2 is a schematic diagram of a control signal, a capture signal, and a laser pulse according to an embodiment of the invention.

The control method of the laser comprises the following steps:

step 1: the rising or falling edges of the control signal are collected to form a capture signal.

Step 2: and outputting laser pulses according to the capture signals.

And step 3: the timing is started when a laser pulse is output.

And 4, step 4: and allowing the next laser pulse to be output when the time obtained by timing reaches the minimum period of the laser pulse, and stopping outputting the next laser pulse when the time obtained by timing exceeds the maximum period of the laser pulse.

In one possible embodiment, the point in time of the output laser pulse follows the point in time of the capture of the rising or falling edge on the capture signal.

By starting the timing when outputting one laser pulse and allowing the output of the next laser pulse only when the time obtained by the timing reaches the minimum period of the laser pulse, the period of the laser pulse is not less than the minimum period, that is, the frequency of the laser pulse does not exceed the set maximum frequency. And stopping outputting the next laser pulse when the time obtained by timing exceeds the maximum period of the laser pulse, so that the period of the laser pulse does not exceed the maximum period, namely the frequency of the laser pulse is not less than the set lowest frequency. The period of the control signal has uncertainty, and the control method of the laser in the embodiment can output the laser pulse along with the control signal on one hand, and can limit the period of the laser pulse between the minimum period and the maximum period on the other hand, thereby being beneficial to ensuring the working performance of the laser and reducing potential safety hazards.

In an embodiment of the invention, the minimum period of the laser pulse is limited by a minimum period timing signal and a minimum period limit signal. And forming a minimum period timing signal at the same time of timing in the step 3, wherein the phase of the minimum period timing signal when timing is stopped is opposite to the phase of the minimum period timing signal when timing is started. For example, the high level indicates that the time period lasts from the start of the time period to the stop of the time period, and the duration of the high level is the set minimum period of the laser pulse, and the high level is changed into the low level after the time period stops. And 3, forming a minimum period limiting signal which is opposite to the minimum period timing signal at the same time of timing in the step 3, and allowing the next laser pulse to be output when the phase of the minimum period limiting signal is changed after the timing is started. For example, the minimum period limitation signal is at a low level when the minimum period timing signal is at a high level, at a high level when the minimum period timing signal is at a low level, and when the minimum period limitation signal is at a high level, the next laser pulse is allowed to be output. The timing is restarted when the next laser pulse is output, that is, the timing started from the output of the previous laser pulse is cleared, and the timing is restarted when the next laser pulse is output.

Referring to fig. 3 and 4, fig. 3 is a schematic diagram of a control signal a, a capture signal a, a minimum period timing signal and a minimum period limiting signal according to an embodiment of the present invention, and fig. 4 is a schematic diagram of a control signal b, a capture signal b, a minimum period timing signal and a minimum period limiting signal according to an embodiment of the present invention.

As illustrated in fig. 3, two rising edges adjacent on the control signal a are captured at time points t1 and t2 on the capture signal a, and the interval time between the time points t1 and t2 is greater than the minimum period Tmin represented by the minimum period timing signal. As can be seen from step 4, when the time obtained by the timing reaches the minimum period of the laser pulse, the next laser pulse is allowed to be output. The interval between time points t1 and t2 in fig. 3 is longer than the minimum period Tmin, and at time point t2 on the capture signal a, the minimum period limit signal is switched from low level to high level, and the next laser pulse is output when the rising edge of the control signal a is collected.

As illustrated in fig. 4, three rising edges on the control signal b are captured at time points t1, t2, and t3 on the capture signal b, and the interval time between the time points t1 and t2 is less than the minimum period Tmin. As can be seen from step 4, the next laser pulse is allowed to be output when the time obtained by the timing reaches the minimum period of the laser pulse, and therefore the next laser pulse cannot be output when the time obtained by the timing is less than the minimum period of the laser pulse. The interval time between time points t1 and t2 in fig. 4 is less than the minimum period Tmin, and at time point t2 on the capture signal b, the minimum period limit signal is still low, and therefore the next laser pulse cannot be output when the rising edge of the capture signal b is acquired. The interval time between time points t1 and t3 in fig. 4 is greater than the minimum period Tmin, and at time point t3 on the capture signal b, the minimum period limit signal is high, so that the next laser pulse can be output when the rising edge of the capture signal b is acquired at time point t 3.

In an embodiment of the invention, the maximum period of the laser pulse is limited by a maximum period timing signal and a maximum period limit signal. And forming a maximum period timing signal while timing in step 3, wherein the phase of the maximum period timing signal when timing is stopped is opposite to that when timing is started. For example, the high level indicates that the time period lasts from the start of the time period to the stop of the time period, and the high level lasts for a set maximum period of the laser pulse, and the high level is changed into the low level after the time period stops. And 3, forming a maximum period limiting signal which is opposite to the maximum period timing signal at the same time of timing, and stopping outputting the next laser pulse when the phase of the maximum period limiting signal is changed after timing is started. For example, the maximum period limiting signal is at a low level when the maximum period timing signal is at a high level, the maximum period limiting signal is at a high level when the maximum period timing signal is at a low level, and the output of the next laser pulse is stopped when the maximum period limiting signal is at a high level. In a possible embodiment, after the maximum period limiting signal is high and the output of the next laser pulse is stopped, if the laser receives a new control signal, the steps 1 to 4 are executed again, and the timing is restarted, that is, the timing started from the output of the previous laser pulse is cleared, and the timing is restarted from the output of the next laser pulse.

Referring to fig. 5 and fig. 6, fig. 5 is a schematic diagram of a control signal c, a capture signal c, a maximum period timing signal and a maximum period limiting signal according to an embodiment of the present invention, and fig. 6 is a schematic diagram of a control signal d, a capture signal d, a maximum period timing signal and a maximum period limiting signal according to an embodiment of the present invention.

As illustrated in fig. 5, two rising edges adjacent on the control signal c are captured at time points t1 and t2 on the capture signal c, and the interval time between the time points t1 and t2 is less than the maximum period Tmax represented by the maximum period timing signal. As can be seen from step 4, the output of the next laser pulse is stopped when the time obtained by the timing exceeds the maximum period of the laser pulse, and therefore the next laser pulse is output when the time obtained by the timing does not exceed the maximum period of the laser pulse. The interval between time points t1 and t2 in fig. 5 is less than the maximum period Tmax, so that at time point t2 on the capture signal c, the minimum period limit signal is still high, and the maximum period limit signal is still low, and the next laser pulse will be output when the rising edge of the capture signal b is collected.

As illustrated in fig. 6, two rising edges adjacent on the control signal d are captured at time points t1 and t2 on the capture signal d, and the interval time between the time points t1 and t2 is greater than the maximum period Tmax indicated by the maximum period timing signal. As can be seen from step 4, the output of the next laser pulse is stopped when the time obtained by the timing exceeds the maximum period of the laser pulse. The interval between time points t1 and t2 in fig. 6 is longer than the maximum period Tmax, so that at time point t2 on the capture signal d, the minimum period limit signal is turned to low level, and the maximum period limit signal is turned to high level, and the output of the next laser pulse is stopped when the rising edge of the capture signal b is collected.

In one possible embodiment, the operating time of the pump source is started when a laser pulse is output, and the laser switches off the pump source when the operating time reaches a maximum operating time.

Fig. 7 is a schematic diagram of a control signal e, a capture signal e, and a maximum operating time according to an embodiment of the invention. Two rising edges adjacent on the control signal e are captured at time points t1 and t2 on the capture signal e and the on-time of the pump source is started to be timed when one laser pulse is output, and if the on-time exceeds the maximum on-time θ, the laser will turn off the pump source. Specifically, the laser may stop the operation of the pump source by turning off the operating current of the pump source.

An embodiment of the invention discloses an electronic control device of a laser. Referring to fig. 8, a schematic diagram of an electronic control apparatus 300 for a laser according to an embodiment of the invention is shown. The electronic control device 300 of the laser includes: a Micro Control Unit (MCU)301, a Field Programmable Gate Array (FPGA)302, one or more digital to analog converters 303, and a control interface 304. The micro control unit 301 and the field-editable logic gate array 302 communicate with each other. The field-editable logic gate array 302 performs digital-to-analog conversion through the one or more digital-to-analog converters 303, and communicates with the application device control board 400 and the upper computer 500 through the control interface 304. The field editable logic gate array 302 may output control signals via the one or more digital to analog converters 303 to control the operating current of the pump source. The field-editable logic gate array 302 may also send a control instruction to the acousto-optic control board card of the laser. The control interface 304 may be a DB25 control interface. The application device control board 400 is installed on other devices using lasers, such as a laser marking device.

The electronic control device 300 of the laser is used for controlling and realizing that: collecting a rising edge or a falling edge of a control signal to form a capture signal; outputting laser pulses according to the capture signals; and starting timing when outputting one laser pulse, allowing to output the next laser pulse when the time obtained by timing reaches the minimum period of the laser pulse, and stopping outputting the next laser pulse when the time obtained by timing exceeds the maximum period of the laser pulse.

Further, the electronic control device 300 of the laser is further configured to control and implement: the time point of outputting the laser pulse follows the time point of capturing the rising edge or the falling edge on the capturing signal.

Further, the electronic control device 300 of the laser is further configured to control and implement: forming a minimum period timing signal while timing, wherein the phase of the minimum period timing signal when timing is stopped is opposite to the phase of the minimum period timing signal when timing is started; and forming a minimum period limiting signal in reverse phase with the minimum period timing signal, and allowing the next laser pulse to be output when the phase of the minimum period limiting signal is changed after the timing is started.

Further, the electronic control device 300 of the laser is further configured to control and implement: forming a maximum period timing signal while timing, wherein the phase of the maximum period timing signal when timing is stopped is opposite to the phase of the maximum period timing signal when timing is started; and forming a maximum period limiting signal in reverse phase with the maximum period timing signal, and stopping outputting the next laser pulse when the phase of the maximum period limiting signal changes after timing is started.

Further, the electronic control device 300 of the laser is further configured to control and implement: and starting to time the working time of the pumping source when outputting a laser pulse, and turning off the pumping source by the laser when the working time reaches the maximum working time.

The electronic control device of the laser in the above embodiments is beneficial to ensuring the working performance of the laser and reducing potential safety hazards.

An embodiment of the invention discloses a control device of a laser. Fig. 9 is a schematic diagram of a control device of a laser according to an embodiment of the present invention. The control device of the laser comprises: an acquisition module 101, a pulse control module 102, and a period timing module 103.

The acquisition module 101 is configured to acquire a rising edge or a falling edge of the control signal to form a capture signal. A pulse control module 102, configured to output a laser pulse according to the capture signal; the period timing module 103 is configured to start timing when outputting one laser pulse, allow the pulse control module 102 to output a next laser pulse when the time obtained by the timing reaches the minimum period of the laser pulse, and stop outputting the next laser pulse when the time obtained by the timing exceeds the maximum period of the laser pulse. The time point when the pulse control module 102 outputs the laser pulse follows the time point when the rising edge or the falling edge is captured on the capture signal.

The embodiment of the invention discloses another control device of a laser. Fig. 10 is a schematic diagram of a control device of a laser according to another embodiment of the present invention. The control device of the laser comprises: an acquisition module 201, a pulse control module 202, a period timing module 203, a limit module 204, and an on-time timing module 205.

The acquisition module 201 is used for acquiring a rising edge or a falling edge of the control signal to form a capture signal. The pulse control module 202 is configured to output a laser pulse according to the capture signal. The period timing module 203 is configured to start timing when outputting one laser pulse, allow the pulse control module 202 to output a next laser pulse when the time obtained by the timing reaches the minimum period of the laser pulse, and stop outputting the next laser pulse when the time obtained by the timing exceeds the maximum period of the laser pulse. The period timing module 203 forms a minimum period timing signal while timing, and the phase of the minimum period timing signal when timing is stopped is opposite to the phase of the minimum period timing signal when timing is started. The period timing module 203 forms a maximum period timing signal while timing, and the phase of the maximum period timing signal when timing is stopped is opposite to the phase of the maximum period timing signal when timing is started.

The limiting module 204 is configured to form a minimum period limiting signal in a phase opposite to the minimum period timing signal, and the pulse control module 202 allows outputting a next laser pulse when the phase of the minimum period limiting signal changes after the timing is started. The on-time timing module 205 starts timing the on-time of the pump source when outputting a laser pulse, and the laser turns off the pump source when the on-time reaches the maximum on-time.

The control device of the laser in each embodiment can output the laser pulse along with the control signal on one hand, and can limit the period of the laser pulse between the minimum period and the maximum period on the other hand, thereby being beneficial to ensuring the working performance of the laser and reducing the potential safety hazard.

One embodiment of the invention discloses a laser. Fig. 11 is a schematic diagram of a laser according to an embodiment of the invention. The laser comprises an optical path module 10 and a circuit module 20. The optical path module 10 includes one or more pumping sources 11, one or more resonant cavities 12, one or more photodetectors 15, one or more fiber amplifiers 13, and a laser output head 14, which are sequentially disposed. Wherein the resonant cavity 12 is provided with a first beam combiner 121, a high reflector 122, a gain fiber 123, a low reflectivity fiber grating 124 and an acousto-optic switch 125. Wherein, the high reflecting mirror 122 can also be replaced by a high reflecting grating. The fiber amplifier 13 is provided with a second beam combiner 131 and a pump laser 132. The circuit module 20 includes an acousto-optic control circuit 21, an output control circuit 22, a pump drive circuit 23, and a protection circuit 24. The laser employs any of the above-described laser control methods to limit the period of the laser pulses between a minimum period and a maximum period.

An embodiment of the invention discloses laser drilling equipment which is used for drilling holes in a solar cell film. Referring to fig. 12, a schematic diagram of a laser drilling apparatus according to an embodiment of the invention is shown. The laser drilling apparatus includes: laser 30, optical system 40, work platform 50 and control board card 60. The work platform 50 is used for mounting and fixing the solar cell film so that the laser beam emitted from the optical system 40 can precisely perforate the solar cell film. The control board 60 is used to control the laser 30 and/or the optical system 40 and/or the work platform 50. The laser beam generated by the laser 30 is focused to the solar cell film on the working platform 50 through the optical system 40, so as to punch the solar cell film. The laser 30 of the laser drilling apparatus limits the period of the laser pulses to be between the minimum period and the maximum period by applying any of the above-mentioned laser control methods. After the laser drilling equipment in the embodiment punches the solar cell film, round holes with uniform size and consistent space are formed in the solar cell film, and the laser drilling equipment has excellent working performance.

Referring to fig. 13 and 14, fig. 13 is a diagram illustrating an effect of a laser drilling apparatus according to the prior art after drilling a hole in a solar cell film, and fig. 14 is a diagram illustrating an effect of a laser drilling apparatus according to the present invention after drilling a hole in a solar cell film. The pie area in fig. 13 is a hole-shaped area Sp formed after the laser drilling device in the prior art drills a hole in the solar cell film. In fig. 14, a white circle is a hole-shaped region Sp formed after the laser drilling device of the present invention drills a hole in the solar cell film. The plurality of hole-shaped regions Sp in fig. 13 are distributed irregularly, which cannot meet the technical requirements, so that the laser drilling device in the prior art has a poor drilling effect on the solar cell film. In fig. 14, a plurality of hole-shaped regions Sp are arranged in a matrix. The plurality of hole-shaped regions Sp in fig. 14 are uniform in size and uniform in pitch. It should be understood by those skilled in the art that the matrix distribution of the plurality of hole-shaped regions Sp in fig. 14 reflects the excellent working performance of the laser drilling apparatus of the present invention. In addition, the laser drilling device of the present invention can achieve the effect shown in fig. 14 when drilling aluminum foil and copper foil.

An embodiment of the present invention discloses a non-transitory computer readable storage medium, in which computer instructions are stored, and the computer instructions are suitable for being loaded by a processor to implement any one of the above methods for controlling a laser.

When the techniques in the various embodiments described above are implemented using software, the computer instructions and/or data to implement the various embodiments described above may be stored on a computer-readable medium or transmitted as one or more instructions or code on a readable medium. Computer-readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another. A storage media may be any available media that a computer can store. Taking this as an example but not limiting: computer-readable media can include RAM, ROM, EEPROM, CD-ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other medium that can carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer. Further, any connection is properly termed a computer-readable medium. For example, if the software is transmitted from a website, server, or other remote source using a coaxial cable, fiber optic cable, twisted pair, Digital Subscriber Line (DSL), or wireless technologies such as infrared, radio, and microwave, then the coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, radio, and microwave are included in the definition of medium.

Finally, it should be noted that: the above examples are only for illustrating the technical solutions of the present application, and are not limited thereto. Although the present application has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention. And such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions in the embodiments of the present application.

Claims

1. A method of controlling a laser, comprising: collecting a rising edge or a falling edge of a control signal to form a capture signal; outputting laser pulses according to the capture signals; and starting timing when outputting one laser pulse, allowing to output the next laser pulse when the time obtained by timing reaches the minimum period of the laser pulse, and stopping outputting the next laser pulse when the time obtained by timing exceeds the maximum period of the laser pulse.

2. The method of claim 1, wherein the time point of outputting the laser pulse follows the time point of capturing the rising edge or the falling edge on the capture signal.

3. The method of controlling a laser according to claim 1 or 2, wherein a minimum period timing signal is formed while timing is being performed, and a phase of the minimum period timing signal at a timing stop time is opposite to a phase at a timing start time; and forming a minimum period limiting signal in reverse phase with the minimum period timing signal, and allowing the next laser pulse to be output when the phase of the minimum period limiting signal is changed after the timing is started.

4. The method of claim 3, wherein a timing is performed while forming a maximum period timing signal having a phase opposite to a phase at which the timing is started when the timing is stopped; and forming a maximum period limiting signal in reverse phase with the maximum period timing signal, and stopping outputting the next laser pulse when the phase of the maximum period limiting signal changes after timing is started.

5. A method for controlling a laser as claimed in claim 1 or 2, characterized in that the timing of the operating time of the pump source is started when a laser pulse is output, and the laser is switched off when said operating time reaches a maximum operating time.

6. An electronic control device for a laser, comprising: the system comprises a micro-control unit, a field-editable logic gate array, one or more digital-to-analog converters and a control interface; the micro control unit is communicated with the field editable logic gate array; the field editable logic gate array performs digital-to-analog conversion through the one or more digital-to-analog converters and communicates with the application equipment control board card and the upper computer through the control interface;

the electronic control device of the laser is used for controlling and realizing that: collecting a rising edge or a falling edge of a control signal to form a capture signal; outputting laser pulses according to the capture signals; and starting timing when outputting one laser pulse, allowing to output the next laser pulse when the time obtained by timing reaches the minimum period of the laser pulse, and stopping outputting the next laser pulse when the time obtained by timing exceeds the maximum period of the laser pulse.

7. The electronic control device of the laser according to claim 6, wherein the electronic control device of the laser is further configured to control to implement: the time point of outputting the laser pulse follows the time point of capturing the rising edge or the falling edge on the capturing signal.

8. Electronic control of a laser according to claim 6 or 7, characterized in that it is also adapted to control the implementation of: forming a minimum period timing signal while timing, wherein the phase of the minimum period timing signal when timing is stopped is opposite to the phase of the minimum period timing signal when timing is started; and forming a minimum period limiting signal in reverse phase with the minimum period timing signal, and allowing the next laser pulse to be output when the phase of the minimum period limiting signal is changed after the timing is started.

9. The electronic control device of the laser according to claim 8, wherein the electronic control device of the laser is further configured to control to implement: forming a maximum period timing signal while timing, wherein the phase of the maximum period timing signal when timing is stopped is opposite to the phase of the maximum period timing signal when timing is started; and forming a maximum period limiting signal in reverse phase with the maximum period timing signal, and stopping outputting the next laser pulse when the phase of the maximum period limiting signal changes after timing is started.

10. Electronic control of a laser according to claim 6 or 7, characterized in that it is also adapted to control the implementation of: and starting to time the working time of the pumping source when outputting a laser pulse, and turning off the pumping source by the laser when the working time reaches the maximum working time.

11. A laser comprising an optical circuit module and a circuit module, wherein the laser employs the method of controlling the laser according to any one of claims 1 to 5.

12. A laser drilling apparatus for drilling a hole in a solar cell film, the laser drilling apparatus comprising: the device comprises a laser, an optical system, a working platform and a control board card; the control board card is used for controlling the laser and/or the optical system and/or the working platform; laser beams generated by the laser are focused to the solar cell film on the working platform through the optical system, and then the solar cell film is punched; characterized in that the laser employs the control method of the laser according to any one of claims 1 to 5.

13. A non-transitory computer readable storage medium having stored therein computer instructions adapted to be loaded by a processor to implement the method of controlling a laser according to any one of claims 1 to 5.