CN104682181B - A kind of adjustment method of laser and laser - Google Patents
A kind of adjustment method of laser and laser Download PDFInfo
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- CN104682181B CN104682181B CN201510076545.5A CN201510076545A CN104682181B CN 104682181 B CN104682181 B CN 104682181B CN 201510076545 A CN201510076545 A CN 201510076545A CN 104682181 B CN104682181 B CN 104682181B
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Abstract
The embodiment of the present application provides a kind of adjustment method of laser, and described method comprises: primary pump receives the pre-electric current provided by a stage drive circuit, and primary pump sends the exploring laser light that power is directly proportional to pre-electric current; Pre-electric current register is adopted to debug pre-electric current; Primary pump receives the one-level operating current provided by a stage drive circuit, and primary pump sends the seed laser that positive frequency range is directly proportional to one-level operating current; Two stage pump receives the secondary work electric current provided by secondary drive circuit, and two stage pump carries out power amplification to the seed laser that primary pump sends, and two stage pump sends the high power laser light that power is directly proportional to secondary work electric current; Adopt the second work register debugging secondary work electric current; Adopt the first work register debugging one-level operating current.The application regulates the electric current of laser circuit by register, regulates laser output parameters, can only carry out the problem that adjusts, and laser parameter can be reused to solve by external devices.
Description
Technical field
The application relates to laser debugging technique field, particularly relates to the method for a kind of laser system debugging and a kind of laser.
Background technology
The outstanding features such as the coherence possessed due to laser is good, high directivity, concentration of energy, applied to each side such as industry, agricultural, accurate measurement and detection, communication and information processing, medical treatment, military affairs at present in a large number, and cause revolutionary breakthrough in a lot of fields, and continuation but also expands by its range of application, and more and more huger effect will be given play to.
In existing laser production method, the pith light path of laser be all affect each loom by artificial disc to a great extent around, manufacture craft go out light characteristic.All meet one to allow each laser and go out light standard, namely output frequency is all identical, need by manual adjustment seed source thus change laser go out light frequency.
Existing Q-switched laser, the controling parameters of its output performance of laser is all solidificated in inner program, through manual adjustment when dispatching from the factory.Power output by regulating bulk potential device to change laser during laser works, but the adjustment of bulk potential device can affect the parameter be solidificated in internal processes, make the unstable properties of laser, and the trueness error of manual debugging method is large, also the performance of product can be affected, product parameters cannot be reused, make the on-site maintenance difficulty of laser.
Summary of the invention
The embodiment of the present application technical problem to be solved is to provide the method for a kind of laser debugging, regulates laser output parameters more easily, can only carry out the problem that adjusts with the output parameter solving laser in prior art by external devices.
In order to solve the problem, this application discloses a kind of adjustment method of laser, it is characterized in that, described laser comprises: MCU, the CPLD be connected with described MCU, a stage drive circuit, secondary drive circuit, primary pump and two stage pump; Described MCU comprises: write circuit, the second work register; Described CPLD comprises, and first starts register, second starts register, pre-electric current register and the first work register; Described method comprises:
It is enabled state that described write circuit writes described first startup register;
Under described primary pump starts the enabled state of register described first, receive the pre-electric current provided by a stage drive circuit, described primary pump sends the exploring laser light that power is directly proportional to described pre-electric current;
Described pre-electric current register is adopted to debug pre-electric current;
It is enabled state that described write circuit writes described second startup register;
Under described primary pump starts the enabled state of register described second, receive the one-level operating current provided by a stage drive circuit, described primary pump sends the seed laser that positive frequency range is directly proportional to described one-level operating current;
Under described two stage pump starts the enabled state of register described second, the secondary work electric current provided by secondary drive circuit is provided, described two stage pump carries out power amplification to the seed laser that described primary pump sends, and described two stage pump sends the high power laser light that power is directly proportional to described secondary work electric current;
Described second work register is adopted to debug described secondary work electric current;
Described first work register is adopted to debug described one-level operating current.
Preferably, described CPLD also comprises: ON-OFF control circuit; Described laser also comprises: one-level digital to analog converter, one-level digital switch, and described one-level digital switch input is connected with one-level digital to analog converter, and the output of described one-level digital switch is connected with a stage drive circuit;
Described ON-OFF control circuit opens described one-level digital switch under starting the enabled state of register described first;
Described one-level digital to analog converter provides pre-voltage under starting the enabled state of register described first;
Described pre-voltage transitions is pre-electric current by a described stage drive circuit.
Preferably, described one-level digital to analog converter comprises: one-level debugger; The step that pre-electric current debugged by the described pre-electric current register of described employing comprises further:
Described write circuit is adopted to write pre-electric current debugging value to described pre-electric current register;
Described one-level debugger adjusts the pre-voltage that described one-level digital to analog converter provides, and the adjusting range of described pre-voltage is directly proportional to pre-electric current debugging value;
Pre-voltage transitions after adjustment is pre-electric current by a described stage drive circuit;
Pre-electric current is debugged by revising described pre-electric current debugging value.
Preferably, described ON-OFF control circuit, when described second startup register is enable, opens described first digital switch;
Described one-level digital to analog converter does not reoffer pre-voltage and is to provide one-level operating voltage under starting the enabled state of register described second;
Described one-level operating voltage is converted to one-level operating current by a described stage drive circuit.
Preferably, described laser comprises two-stage digital switch, secondary drive circuit; The input of described two-stage digital switch is connected with described MCU, and the output of described two-stage digital switch is connected with described secondary drive circuit; Described MCU also comprises: secondary digital to analog converter;
Described ON-OFF control circuit opens described second digital switch under starting the enabled state of register described second;
Described secondary digital to analog converter provides secondary work voltage;
Described two stage pump voltage transitions is two stage pump electric current by described secondary drive circuit.
Preferably, described secondary digital to analog converter comprises: secondary debugger; The step that described secondary work electric current debugged by described second work register of described employing comprises further:
Adopt described write circuit to described second work register write secondary work debugging value;
Described secondary debugger adjusts the secondary work voltage that described secondary digital to analog converter provides, and the adjusting range of described two stage pump voltage is directly proportional to described secondary work debugging value;
Secondary work voltage transitions after adjustment is secondary work electric current by described secondary drive circuit;
By revising described secondary work debugging value debugging secondary work electric current.
Preferably, the step that described one-level operating current debugged by described first work register of described employing comprises further:
Described write circuit is adopted to write a level work debugging value to described first work register;
Described one-level debugger adjusts the one-level operating voltage that described one-level digital to analog converter provides, and the adjusting range of described one-level operating voltage is directly proportional to a level work debugging value;
One-level operating voltage after adjustment is converted to one-level operating current by a described stage drive circuit.
By revising a described level work debugging value debugging one-level operating current.
Preferably, described MCU also comprises reading circuit, and described laser also comprises: FLASH; Described method also comprises:
Described reading circuit reads the level work debugging value in the pre-electric current debugging value in pre-electric current register, the secondary work debugging value in the second work register and the first work register;
Described write circuit is adopted described pre-electric current debugging value, secondary work debugging value and a level work debugging value to be written in FLASH.
Preferably, described method also comprises:
When working on power next time, described write circuit is adopted to write in pre-electric current register by the pre-electric current debugging value in the described FLASH of being stored in;
Adopt described write circuit by described secondary work debugging value write second work register be stored in FLASH;
Adopt described write circuit by described level work debugging value write first work register be stored in FLASH.
Accordingly, the embodiment of the present application additionally provides a kind of laser, it is characterized in that, described laser comprises: MCU101, the CPLD be connected with described MCU, a stage drive circuit, secondary drive circuit, primary pump and two stage pump; Described MCU comprises: write circuit, the second work register; Described CPLD comprises, and first starts register, second starts register, pre-electric current register and the first work register;
Described write circuit is enabled state for writing described first startup register, and writing described second startup register is enabled state;
A described stage drive circuit, provides pre-electric current under starting the enabled state of register described first, and, provide and one-level operating current under starting the enabled state of register described second;
Described primary pump, under starting the enabled state of register described first, the exploring laser light that power is directly proportional to described pre-electric current is sent when receiving pre-electric current, and, under starting the enabled state of register described second, when receiving one-level operating current, send the seed laser that positive frequency range is directly proportional to described one-level operating current;
Described secondary drive circuit, provides secondary work electric current under starting the enabled state of register described second;
Described two stage pump, under starting the enabled state of register described second, carries out power amplification to the seed laser that described primary pump sends, sends the high power laser light that power is directly proportional to described secondary work electric current;
Described second work register, for debugging described secondary work electric current;
Described first work register, for debugging described one-level operating current.
Preferably, described CPLD also comprises: ON-OFF control circuit; Described laser also comprises: one-level digital to analog converter, one-level digital switch, and described one-level digital switch input is connected with one-level digital to analog converter, and the output of described one-level digital switch is connected with a stage drive circuit;
Described ON-OFF control circuit, under starting the enabled state of register described first, opens described one-level digital switch;
Described one-level digital to analog converter, provides pre-voltage under starting the enabled state of register described first;
A described stage drive circuit, for being pre-electric current by described pre-voltage transitions.
Preferably, described one-level digital to analog converter comprises: one-level debugger;
Described write circuit, also for writing pre-electric current debugging value to described pre-electric current register;
Described one-level debugger, for adjusting the pre-voltage that described one-level digital to analog converter provides, the adjusting range of described pre-voltage is directly proportional to pre-electric current debugging value.
Preferably, described switching circuit, also for when described second startup register is enable, opens described first digital switch;
Described one-level digital to analog converter, also under the enabled state of described second startup register, does not reoffer pre-voltage and is to provide one-level operating voltage.
Preferably, described laser comprises two-stage digital switch, secondary drive circuit; The input of described two-stage digital switch is connected with described MCU, and the output of described two-stage digital switch is connected with described secondary drive circuit; Described MCU also comprises: secondary digital to analog converter;
Described ON-OFF control circuit, also under the enabled state of described second startup register, opens described second digital switch;
Described secondary digital to analog converter, for providing secondary work voltage;
Described secondary drive circuit, for being two stage pump electric current by described two stage pump voltage transitions.
Preferably, described secondary digital to analog converter comprises: secondary debugger;
Described write circuit, also for writing secondary work debugging value to described second work register;
Described secondary debugger, for adjusting the secondary work voltage that described secondary digital to analog converter provides, the adjusting range of described two stage pump voltage is directly proportional to described secondary work debugging value.
Preferably, described write circuit, also for writing a level work debugging value to described first work register;
Described one-level debugger, also for adjusting the one-level operating voltage that described one-level digital to analog converter provides, the adjusting range of described one-level operating voltage is directly proportional to a level work debugging value.
Preferably, described MCU also comprises reading circuit, and described laser also comprises: FLASH;
Described reading circuit, for reading the level work debugging value in the pre-electric current debugging value in pre-electric current register, the secondary work debugging value in the second work register and the first work register;
Described write circuit, also for described pre-electric current debugging value, secondary work debugging value and a level work debugging value being written in FLASH.
Preferably, when working on power next time, described write circuit, also for writing in pre-electric current register by the pre-electric current debugging value in the described FLASH of being stored in;
Described write circuit, also for by described secondary work debugging value write second work register be stored in FLASH;
Described write circuit, also for by described level work debugging value write first work register be stored in FLASH.
Compared with prior art, the embodiment of the present application comprises following advantage:
The application is multiple debug points that laser internal circuit is arranged, and can be controlled by register to the debug point of laser circuit, improves the stability of system;
By digital modulation mode, replace existing artificial mechanism debugging mode, make adjustment accuracy consistent, make properties of product normalization better, the mode providing parameter to reuse, makes on-site maintenance be more prone to.
Accompanying drawing explanation
Fig. 1 is the structured flowchart of existing a kind of laser;
Fig. 2 is the flow chart of steps of a kind of laser adjustment method embodiment of the application;
Fig. 3 is the flow chart of steps of pre-electric current debugging in the embodiment of the present application;
Fig. 4 is the flow chart of steps of secondary work electric current debugging in the embodiment of the present application;
Fig. 5 is the flow chart of steps of one-level operating current debugging in the embodiment of the present application;
Fig. 6 is the flow chart of steps of a kind of laser adjustment method embodiment of the application;
Fig. 7 is the structure chart of a kind of laser embodiments of the application;
Fig. 8 is the structure chart of a kind of laser embodiments of the application.
Embodiment
For enabling above-mentioned purpose, the feature and advantage of the application more become apparent, below in conjunction with the drawings and specific embodiments, the application is described in further detail.
One of core idea of the embodiment of the present application is, is controlled by the circuit of register pair laser, can regulate the pre-electric current of laser when different operating frequency, one-level operating current, secondary work electric current respectively.
With reference to the structured flowchart that Fig. 1 is existing a kind of laser;
In existing laser, comprise CPLD11, one-level digital to analog converter 12, secondary digital to analog converter 113, one-level analog switch 14, secondary analog switch 15, stage drive circuit 16, secondary drive circuit 17, primary pump 18 and two stage pump 19; The input of one-level analog switch 14 is connected with one-level digital to analog converter 12, and one-level analog switch 14 output is connected with a stage drive circuit 16, and a stage drive circuit 16 provides electric current for primary pump 18; The input of secondary analog switch 15 is connected with secondary digital to analog converter 13, and secondary analog switch 15 output is connected with secondary drive circuit 17, and secondary drive circuit 17 provides electric current for two stage pump 19; One-level digital to analog converter 12 and secondary digital to analog converter 13 are all controlled by CPLD11.
CPLD (ComplexProgrammableLogicDevice) CPLD, be from PAL and GAL device development device out, scale is large comparatively speaking, and complex structure, belongs to large scale integrated circuit scope.The digital integrated circuit of be a kind of user according to needing separately constitutive logic function voluntarily.Its basic design method is by Integrated Development software platform, by the method such as schematic diagram, hardware description language, generate corresponding file destination, by download cable (" in system " programmes), code is sent in objective chip, realizes the digital system of design.
Such as: compiled by hardware description language, program burn writing, a common CP LD chip can become the electric machine controller chip that has serial ports of computers interface.
In existing laser, the motion control signal that CPLD receives the input of external movement control card controls laser, and external movement control signal comprises: power contorl parameters, laser output timing start-stop parameter.
In existing laser, because digital to analog converter carries out digital-to-analogue conversion according to the program being solidificated in CPLD inside, the magnitude of voltage that therefore its conversion produces can not adjust.When laser real work, can only adjust by bulk potential device the voltage that digital to analog converter provides.But because laser is when exporting different frequency, size of current required for it is different, such as: pre-electric current, 20KHZ operating current, 30KHZ operating current etc., the change of electric current can only change voltage by digital to analog converter, therefore, when frequency is different, the conversion proportion of digital to analog converter is different.
Laser, when a certain frequency operation, by adjustment bulk potential device, can adjust the magnitude of voltage that drive circuit receives, laser Output of laser is met the demands.Just rise when changing next frequency to you, because the ratio of digital to analog converter conversion is different, the amplitude that its voltage signal generated changes after potentiometer changes not identical with last frequency voltage.Therefore when different frequency, need to readjust potentiometer, with satisfied output demand.
Above-mentioned laser adjustment method Problems existing is, on the one hand, when reality uses, laser needs often to change output frequency, and this just needs repeatedly to adjust potentiometer, and adjustment repeatedly needs to waste a large amount of time.On the other hand, the adjustment of potentiometer by manually adjusting realization, and manually adjusts and adds error, and when can not ensure repeatedly to debug a certain output frequency, the magnitude of voltage that drive circuit receives is all identical.
With reference to the flow chart of steps that Fig. 2 is a kind of laser adjustment method embodiment of the application, described laser comprises: MCU, the CPLD be connected with described MCU, a stage drive circuit, secondary drive circuit, primary pump and two stage pump; Described MCU comprises: write circuit, the second work register; Described CPLD comprises, and first starts register, second starts register, pre-electric current register and the first work register; Wherein MCU can be connected with PC, and by PC control MCU, described method can comprise the steps:
Step 201, it is enabled state that described write circuit writes described first startup register;
Step 202, under described primary pump starts the enabled state of register described first, receive the pre-electric current provided by a stage drive circuit, described primary pump sends the exploring laser light that power is directly proportional to described pre-electric current;
Step 203, adopts described pre-electric current register to debug pre-electric current;
Step 204, it is enabled state that described enable circuits writes described second startup register;
Step 205, under described primary pump starts the enabled state of register described second, receive the one-level operating current provided by a stage drive circuit, described primary pump sends the positive frequency range seed laser relevant with described one-level operating current;
Step 206, under described two stage pump starts the enabled state of register described second, the secondary work electric current provided by secondary drive circuit is provided, described two stage pump carries out power amplification to the seed laser that described primary pump sends, and described two stage pump sends the high power laser light that power is directly proportional to described secondary work electric current;
Step 207, adopts described second work register to debug described secondary work electric current;
Step 208, adopts described first work register to debug described one-level operating current.
The abbreviation of MCU and MicroControlUnit, Chinese is micro-control unit, also known as one chip microcomputer (SingleChipMicrocomputer) or single-chip microcomputer, refer to the appearance along with large scale integrated circuit and development thereof, by the CPU of computer, RAM, ROM, timer conter and multiple I/O Interface integration on one chip, form the computer of chip-scale, do various combination for different application scenarios and control common memory device.
In the embodiment of the present application, MCU and CPLD inside is all provided with various register to realize the debugging to laser.MCU can be controlled by PC, uses serial port communicating protocol to communicate between PC with MCU; MCU and CPLD is connected, and use self-defined communications protocol to communicate between CPLD, MCU and CPLD, MCU can control CPLD.In the embodiment of the application, laser is not debug according to the motion of external movement control card input, but is debugged laser by PC.PC sends data by serial ports, and through the parsing of MCU, if address is MCU inside, that directly accesses MCU internal register, if address is CPLD inside.Then MCU again by with CPLD communications access CPLD.Thus say from PC angle: PC can control CPLD register.In MCU and CPLD, be all provided with mode register, during normal mode of operation, the value of MCU and CPLD internal register is all the value of the mode register of 0, CPLD when being 0, receives the signal of external movement control card as control source.
Write circuit is provided with in MCU, in CPLD, be provided with the first startup register, second start register, when needs are debugged, control the mode register of write circuit to MCU and CPLD inside by PC and write non-zero value, when the value of the mode register of CPLD is non-zero, receive and start from first the value that register and second starts register, the value of the value and the second startup register that start register by first replaces the motion control signal of external control card input.The value of the first value and the second startup register starting register writes value by write circuit equally, and when the first value starting register is written as 1, the first startup register is enabled state.When second value starting register is written as 1, the second startup register is enabled state.
In the present embodiment, described CPLD can also comprise: ON-OFF control circuit; Described laser can also comprise: one-level digital to analog converter, one-level digital switch, and described one-level digital switch input is connected with one-level digital to analog converter, and the output of described one-level digital switch is connected with a stage drive circuit.
Under described ON-OFF control circuit starts the enabled state of register described first, open described one-level digital switch;
Under described one-level digital to analog converter starts the enabled state of register described first, pre-voltage is provided;
Described pre-voltage transitions is pre-electric current by a described stage drive circuit.
Described primary pump sends the exploring laser light that power is directly proportional to described pre-electric current;
In the present embodiment, one-level digital to analog converter can be digital analog converter DAC (Digitaltoanalogconverter), DAC is a kind of equipment digital signal being converted to analog signal (form with electric current, voltage or electric charge).In a lot of digital system (such as computer), signal stores in a digital manner and transmits, and such signal can be converted to analog signal by digital analog converter, thus they can be identified by extraneous (people or other nonnumeric systems).DAC and CPLD is connected, and CPLD provides power supply for DAC.
In the present embodiment, be also provided with frequency register in laser, by the frequency values of write circuit to the required debugging of frequency register write, when debugging, DAC provides different voltage order one according to the frequency values in frequency register.
When the first startup register is enable, DAC only can provide the pre-voltage that a magnitude of voltage is less, and pre-voltage drives according to one-level and converts pre-electric current to, and primary pump receives pre-electric current and sends the less laser of performance number.Adopt external light detector to obtain the power of the laser that primary pump exports, can judge whether primary pump can normal luminous by the size of Output of laser power.
In the present embodiment, described ON-OFF control circuit opens described first digital switch under starting the enabled state of register described second;
Described one-level digital to analog converter does not reoffer pre-voltage and is to provide one-level operating voltage under starting the enabled state of register described first;
Described one-level operating voltage is converted to one-level operating current by a described stage drive circuit.
It should be noted that DAC does not reoffer the less pre-voltage of magnitude of voltage, but provides actual one-level operating voltage according to the frequency values in frequency register when the second startup register is enable.
In the embodiment of the application, described laser can also comprise two-stage digital switch, secondary drive circuit; The input of described two-stage digital switch is connected with described MCU, and the output of described two-stage digital switch is connected with described secondary drive circuit; Described MCU also comprises: secondary digital to analog converter;
Described ON-OFF control circuit opens described second digital switch under starting the enabled state of register described first;
Described secondary digital to analog converter provides secondary work voltage;
Described two stage pump voltage transitions is two stage pump electric current by described secondary drive circuit.
In the embodiment of the present application, primary pump is as the seed source of laser, and the effect of two stage pump carries out power amplification to the laser that primary pump inspires.
With reference to the flow chart of steps that Fig. 3 is pre-electric current debugging in the embodiment of the present application.In the embodiment of the present application, described one-level digital to analog converter can comprise: one-level debugger; The step that pre-electric current debugged by the described pre-electric current register of described employing comprises further:
Sub-step S301, adopts described write circuit to write pre-electric current debugging value to described pre-electric current register;
Sub-step S302, described one-level debugger adjusts the pre-voltage that described one-level digital to analog converter provides, and the adjusting range of described pre-voltage is directly proportional to pre-electric current debugging value;
Sub-step S303, the pre-voltage transitions after adjustment is pre-electric current by a described stage drive circuit;
Sub-step S304, debugs pre-electric current by revising described pre-electric current debugging value.
With reference to the flow chart of steps that Fig. 4 is secondary work electric current debugging in the embodiment of the present application.In the embodiment of the present application, described secondary digital to analog converter can comprise: secondary debugger; The step that described secondary work electric current debugged by described second work register of described employing comprises further:
Sub-step S401, adopts described write circuit to described second work register write secondary work debugging value;
Sub-step S402, described secondary debugger adjusts the secondary work voltage that described secondary digital to analog converter provides, and the adjusting range of described two stage pump voltage is directly proportional to described secondary work debugging value;
Sub-step S403, the secondary work voltage transitions after adjustment is secondary work electric current by described secondary drive circuit;
Sub-step S404, by revising described secondary work debugging value debugging secondary work electric current.
With reference to the flow chart of steps that Fig. 5 is one-level operating current debugging in the embodiment of the present application.In the embodiment of the present application, the step that described one-level operating current debugged by described first work register of described employing comprises further:
Sub-step S501, adopts described write circuit to write a level work debugging value to described first work register;
Sub-step S502, described one-level debugger adjusts the one-level operating voltage that described one-level digital to analog converter provides, and the adjusting range of described one-level operating voltage is directly proportional to a level work debugging value;
Sub-step S503, the one-level operating voltage after adjustment is converted to one-level operating current by a described stage drive circuit.
Sub-step S504, by revising a described level work debugging value debugging one-level operating current.
In the adjustment method of existing laser, by adjustment external analog switch, reach and control pre-size of current, the object of positive frequency range size.And primary pump operating current is fixing stepped-style in the value of each frequency band.Step size cannot be revised aborning flexibly.In application embodiment, with the addition of digital modulation function, can modify to the one-level operating current of pre-electric current, secondary work electric current and each frequency band.
With reference to the flow chart of steps that Fig. 6 is a kind of laser adjustment method embodiment of the application, in the present embodiment, described MCU also comprises reading circuit, and described laser also comprises: FLASH; Described method also comprises:
Step 601, described reading circuit reads the level work debugging value in the pre-electric current debugging value in pre-electric current register, the secondary work debugging value in the second work register and the first work register;
Step 602, adopts described write circuit to be written in FLASH by described pre-electric current debugging value, secondary work debugging value and a level work debugging value;
Described method can further include in the present embodiment:
Step 603, when working on power next time, adopts described write circuit to write in pre-electric current register by the pre-electric current debugging value in the described FLASH of being stored in;
Step 604, adopts described write circuit by described secondary work debugging value write second work register be stored in FLASH;
Step 605, adopts described write circuit by described level work debugging value write first work register be stored in FLASH.
FLASH memory, also known as flash memory, it combines the strong point of ROM and RAM, not only possesses the performance of Electrical Erasable (EEPROM) able to programme, can also read data (advantage of NVRAM) fast, data can not be lost because of power-off.
Conveniently understand, provide a complete debugging flow process to be illustrated below.The laser that the laser used in example is 20W.
1, laser connection device power supply and power detector;
2, the mode register writing MCU is non-zero, and the mode register writing CPLD is non-zero, and writing frequency register is 25KHZ, and writing the first startup register is enabled state;
3, obtained the watt level of Output of laser by power detector, if the performance number of Output of laser, do not meet the demands, then revise the value of pre-electric current register;
4, the value writing the first startup register is failure state, closes laser;
5, on the position of Laser output, connect detector and oscilloscope, laser powers on,
6,2-3 is repeated.
7, writing the second work register in MCU is 0, and writing two stage pump is enabled state;
8, the light probe of light modulated modulating and testing device and oscilloscope, oscilloscope is checked the positive frequency range of two stage pump Output of laser, sees whether positive frequency range is between 90ns-100ns; If do not meet, then time by writing 25KHZ, the size of the value adjustment one-level operating current of the first work register, makes the positive frequency range of two stage pump Output of laser meet the requirement of 90ns-100ns;
9, writing the second work register in MCU is 255,255 i.e. full power values.
10, the light probe of light modulated modulating and testing device and oscilloscope, oscilloscope is checked the positive frequency range of two stage pump Output of laser, sees whether positive frequency range is between 130ns-140ns; If do not meet, then time by writing 25KHZ, the size of the value adjustment one-level operating current of the first work register, makes the positive frequency range of two stage pump Output of laser meet the requirement of 130ns-140ns;
11,9-10 repeatedly, makes to meet the demands when the second work register value is 0 and value is 255;
12, writing two-stage register is failure state;
13, pre-electric current, secondary work electric current is treated, after each frequency band one-level operating current revised.PC sends and writes FLASH order, and MCU by above for CPLD inside register read, then will be written in the inner FLASH block of MCU, reach the object of persistence.Perhaps can this content be stored in local computer, as persistence.
14, after treating that MCU powers on next time, from FLASH, the register that the parameter value mentioned in the 13rd is written to each correspondence is read.
Above-mentioned example is adjustment laser at 25KHz and following goes out optical property.Each frequency band can be adjusted by the value of Modification Frequency, corresponding frequencies work register, control the performance of light.
The digital modulation process more than related to, and data are stored in MCU or computer as permanent storage.The preferential benefit provided has:
1. production process, can separate light path part and circuit part and produce.Circuit part can use dummy load as content measurement; And light path can use one piece of circuit module to test all light path part.After treating that the adjustment of all parameters is complete, be stored in computer.To photoelectricity combine before, by respective optical path part to parameter downloads in circuit control part;
2. maintenance is easier.Only need to adjust light path or electric current.
It should be noted that, for embodiment of the method, in order to simple description, therefore it is all expressed as a series of combination of actions, but those skilled in the art should know, the embodiment of the present application is not by the restriction of described sequence of movement, because according to the embodiment of the present application, some step can adopt other orders or carry out simultaneously.Secondly, those skilled in the art also should know, the embodiment described in specification all belongs to preferred embodiment, and involved action might not be that the embodiment of the present application is necessary.
With reference to Fig. 7, it is the structured flowchart of a kind of laser embodiments of the application, in the embodiment of the present application, described laser can comprise: MCU701, the CPLD702 be connected with described MCU701, a stage drive circuit 703, secondary drive circuit 704, primary pump 705 and two stage pump 706; Described MCU701 can comprise: write circuit 707, second work register 708; Described CPLD can comprise, and first starts register 709, second starts register 710, pre-electric current register 711 and the first work register 712;
Described write circuit 707, starts register 709 for enabled state for writing described first, and, write described second and start register 710 for enabled state;
A described stage drive circuit 703, provides pre-electric current under starting the enabled state of register 709 described first, and, provide and one-level operating current under starting the enabled state of register 710 described second;
Described primary pump 705, under starting the enabled state of register described first, the exploring laser light that power is directly proportional to described pre-electric current is sent when receiving pre-electric current, and, under starting the enabled state of register described second, when receiving one-level operating current, send the seed laser that positive frequency range is directly proportional to described one-level operating current;
Described pre-electric current register 711, for debugging pre-electric current;
Described secondary drive circuit 704, under starting the enabled state of register 710 described second, provides secondary work electric current;
Described two stage pump 706, under starting the enabled state of register described second, carries out power amplification to the seed laser that described primary pump 705 sends, sends the high power laser light that power is directly proportional to described secondary work electric current;
Described second work register 708, for debugging described secondary work electric current;
Described first work register 712, for debugging described one-level operating current.
In the embodiment of the present application, described CPLD can also comprise: ON-OFF control circuit; Described laser also comprises: one-level digital to analog converter, one-level digital switch, and described one-level digital switch input is connected with one-level digital to analog converter, and the output of described one-level digital switch is connected with a stage drive circuit;
Described ON-OFF control circuit, under starting the enabled state of register described first, opens described one-level digital switch;
Described one-level digital to analog converter, provides pre-voltage under starting the enabled state of register described first;
A described stage drive circuit, for being pre-electric current by described pre-voltage transitions.
In the embodiment of the present application, described one-level digital to analog converter comprises: one-level debugger;
Described write circuit, also for writing pre-electric current debugging value to described pre-electric current register;
Described one-level debugger, for adjusting the pre-voltage that described one-level digital to analog converter provides, the adjusting range of described pre-voltage is directly proportional to pre-electric current debugging value;
In the embodiment of the present application, it is characterized in that, described switching circuit, also under the enabled state of described second startup register, open described first digital switch;
Described one-level digital to analog converter, also under the enabled state of described second startup register, does not reoffer pre-voltage and is to provide one-level operating voltage;
In the embodiment of the present application, described laser comprises two-stage digital switch, secondary drive circuit; The input of described two-stage digital switch is connected with described MCU, and the output of described two-stage digital switch is connected with described secondary drive circuit; Described MCU also comprises: secondary digital to analog converter;
Described ON-OFF control circuit, also under the enabled state of described second startup register, opens described second digital switch;
Described secondary digital to analog converter, for providing secondary work voltage;
Described secondary drive circuit, for being two stage pump electric current by described two stage pump voltage transitions.
In the embodiment of the present application, described secondary digital to analog converter comprises: secondary debugger;
Described write circuit, also for writing secondary work debugging value to described second work register;
Described secondary debugger, for adjusting the secondary work voltage that described secondary digital to analog converter provides, the adjusting range of described two stage pump voltage is directly proportional to described secondary work debugging value;
In the embodiment of the present application, described write circuit, also for writing a level work debugging value to described first work register;
Described one-level debugger, also for adjusting the one-level operating voltage that described one-level digital to analog converter provides, the adjusting range of described one-level operating voltage is directly proportional to a level work debugging value;
In the embodiment of the present application, described MCU also comprises reading circuit, and described laser also comprises: FLASH;
Described reading circuit, for reading the level work debugging value in the pre-electric current debugging value in pre-electric current register, the secondary work debugging value in the second work register and the first work register;
Described write circuit, also for described pre-electric current debugging value, secondary work debugging value and a level work debugging value being written in FLASH.
In the embodiment of the present application, when working on power next time, described write circuit, also for writing in pre-electric current register by the pre-electric current debugging value in the described FLASH of being stored in;
Described write circuit, also for by described secondary work debugging value write second work register be stored in FLASH;
Described write circuit, also for by described level work debugging value write first work register be stored in FLASH.
With reference to Fig. 8, be the structured flowchart of a kind of laser embodiments of the application, in the present embodiment, laser can comprise MCU801, PC 802, CPLD803, wherein use serial communication protocol between MCU801 and PC 802, MCU801 and CPLD803 is communicated by self-defining communication protocol, in the present embodiment, laser can also comprise: one-level digital to analog converter 804, one-level digital switch 805, one stage drive circuit 806, primary pump 807, wherein the input of one-level digital to analog converter 804 is connected with CPLD803, the output of one-level digital to analog converter 804 is connected with one-level digital switch 805, CPLD803 provides power supply for one-level digital to analog converter 804, one-level digital to analog converter 84 provides voltage according to actual needs, one stage drive circuit 806 converts the voltage order one that one-level digital to analog converter 804 provides to pre-electric current or one-level operating current exports to primary pump 807, primary pump 807 sends laser after receiving pre-electric current or one-level operating current.In the present embodiment, laser can also comprise, two-stage digital switch 808, secondary drive circuit 809, two stage pump 810.The input of two-stage digital switch 808 is connected with MCU801, and the output of two-stage digital switch 808 is connected with secondary drive circuit 809.Wherein, CPLD803 can control the break-make sequential of one-level digital switch 805 and two-stage digital switch 808.In this application, MCU801 inside includes digital to analog converter, therefore need not external digital to analog converter.The digital to analog converter power output as required of MCU inside provides secondary voltage, and secondary voltage is converted to two-level current by secondary drive circuit 809, and two stage pump 810 receives two-level current and carries out power amplification to the laser that primary pump 807 sends.
For device embodiment, due to itself and embodiment of the method basic simlarity, so description is fairly simple, relevant part illustrates see the part of embodiment of the method.
Each embodiment in this specification all adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiments, between each embodiment identical similar part mutually see.
Those skilled in the art should understand, the embodiment of the embodiment of the present application can be provided as method, device or computer program.Therefore, the embodiment of the present application can adopt the form of complete hardware embodiment, completely software implementation or the embodiment in conjunction with software and hardware aspect.And the embodiment of the present application can adopt in one or more form wherein including the upper computer program implemented of computer-usable storage medium (including but not limited to magnetic disc store, CD-ROM, optical memory etc.) of computer usable program code.
The embodiment of the present application describes with reference to according to the flow chart of the method for the embodiment of the present application, terminal equipment (system) and computer program and/or block diagram.Should understand can by the combination of the flow process in each flow process in computer program instructions realization flow figure and/or block diagram and/or square frame and flow chart and/or block diagram and/or square frame.These computer program instructions can being provided to the processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing terminal equipment to produce a machine, making the instruction performed by the processor of computer or other programmable data processing terminal equipment produce device for realizing the function of specifying in flow chart flow process or multiple flow process and/or block diagram square frame or multiple square frame.
These computer program instructions also can be stored in can in the computer-readable memory that works in a specific way of vectoring computer or other programmable data processing terminal equipment, the instruction making to be stored in this computer-readable memory produces the manufacture comprising command device, and this command device realizes the function of specifying in flow chart flow process or multiple flow process and/or block diagram square frame or multiple square frame.
These computer program instructions also can be loaded on computer or other programmable data processing terminal equipment, make to perform sequence of operations step to produce computer implemented process on computer or other programmable terminal equipment, thus the instruction performed on computer or other programmable terminal equipment is provided for the step realizing the function of specifying in flow chart flow process or multiple flow process and/or block diagram square frame or multiple square frame.
Although described the preferred embodiment of the embodiment of the present application, those skilled in the art once obtain the basic creative concept of cicada, then can make other change and amendment to these embodiments.So claims are intended to be interpreted as comprising preferred embodiment and falling into all changes and the amendment of the embodiment of the present application scope.
Finally, also it should be noted that, in this article, the such as relational terms of first and second grades and so on is only used for an entity or operation to separate with another entity or operating space, and not necessarily requires or imply the relation that there is any this reality between these entities or operation or sequentially.And, term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, thus make to comprise the process of a series of key element, method, article or terminal equipment and not only comprise those key elements, but also comprise other key elements clearly do not listed, or also comprise by the intrinsic key element of this process, method, article or terminal equipment.When not more restrictions, the key element limited by statement " comprising ... ", and be not precluded within process, method, article or the terminal equipment comprising described key element and also there is other identical element.
A kind of laser adjustment method above the application provided and a kind of laser, be described in detail, apply specific case herein to set forth the principle of the application and execution mode, the explanation of above embodiment is just for helping method and the core concept thereof of understanding the application; Meanwhile, for one of ordinary skill in the art, according to the thought of the application, all will change in specific embodiments and applications, in sum, this description should not be construed as the restriction to the application.
Claims (18)
1. an adjustment method for laser, is characterized in that, described laser comprises: MCU, the CPLD be connected with described MCU, a stage drive circuit, secondary drive circuit, primary pump and two stage pump; Described MCU comprises: write circuit, the second work register; Described CPLD comprises, and first starts register, second starts register, pre-electric current register and the first work register; Described method comprises:
It is enabled state that described write circuit writes described first startup register;
Under described primary pump starts the enabled state of register described first, receive the pre-electric current provided by a stage drive circuit, described primary pump sends the exploring laser light that power is directly proportional to described pre-electric current;
Described pre-electric current register is adopted to debug pre-electric current;
It is enabled state that described write circuit writes described second startup register;
Under described primary pump starts the enabled state of register described second, receive the one-level operating current provided by a stage drive circuit, described primary pump sends the seed laser that positive frequency range is directly proportional to described one-level operating current;
Under described two stage pump starts the enabled state of register described second, the secondary work electric current provided by secondary drive circuit is provided, described two stage pump carries out power amplification to the seed laser that described primary pump sends, and described two stage pump sends the high power laser light that power is directly proportional to described secondary work electric current;
Described second work register is adopted to debug described secondary work electric current;
Described first work register is adopted to debug described one-level operating current.
2. method according to claim 1, is characterized in that, described CPLD also comprises: ON-OFF control circuit; Described laser also comprises: one-level digital to analog converter, one-level digital switch, and described one-level digital switch input is connected with one-level digital to analog converter, and the output of described one-level digital switch is connected with a stage drive circuit;
Described ON-OFF control circuit opens described one-level digital switch under starting the enabled state of register described first;
Described one-level digital to analog converter provides pre-voltage under starting the enabled state of register described first;
Described pre-voltage transitions is pre-electric current by a described stage drive circuit.
3. method according to claim 2, is characterized in that, described one-level digital to analog converter comprises: one-level debugger; The step that pre-electric current debugged by the described pre-electric current register of described employing comprises further:
Described write circuit is adopted to write pre-electric current debugging value to described pre-electric current register;
Described one-level debugger adjusts the pre-voltage that described one-level digital to analog converter provides, and the adjusting range of described pre-voltage is directly proportional to pre-electric current debugging value;
Pre-voltage transitions after adjustment is pre-electric current by a described stage drive circuit;
Pre-electric current is debugged by revising described pre-electric current debugging value.
4. method according to claim 3, is characterized in that, described ON-OFF control circuit, when described second startup register is enable, opens described one-level digital switch;
Described one-level digital to analog converter does not reoffer pre-voltage and is to provide one-level operating voltage under starting the enabled state of register described second;
Described one-level operating voltage is converted to one-level operating current by a described stage drive circuit.
5. method according to claim 4, is characterized in that, described laser comprises two-stage digital switch, secondary drive circuit; The input of described two-stage digital switch is connected with described MCU, and the output of described two-stage digital switch is connected with described secondary drive circuit; Described MCU also comprises: secondary digital to analog converter;
Described ON-OFF control circuit opens described two-stage digital switch under starting the enabled state of register described second;
Described secondary digital to analog converter provides secondary work voltage;
Described two stage pump voltage transitions is two stage pump electric current by described secondary drive circuit.
6. method according to claim 5, is characterized in that, described secondary digital to analog converter comprises: secondary debugger; The step that described secondary work electric current debugged by described second work register of described employing comprises further:
Adopt described write circuit to described second work register write secondary work debugging value;
Described secondary debugger adjusts the secondary work voltage that described secondary digital to analog converter provides, and the adjusting range of described two stage pump voltage is directly proportional to described secondary work debugging value;
Secondary work voltage transitions after adjustment is secondary work electric current by described secondary drive circuit;
By revising described secondary work debugging value debugging secondary work electric current.
7. method according to claim 6, is characterized in that, the step that described one-level operating current debugged by described first work register of described employing comprises further:
Described write circuit is adopted to write a level work debugging value to described first work register;
Described one-level debugger adjusts the one-level operating voltage that described one-level digital to analog converter provides, and the adjusting range of described one-level operating voltage is directly proportional to a level work debugging value;
One-level operating voltage after adjustment is converted to one-level operating current by a described stage drive circuit.
By revising a described level work debugging value debugging one-level operating current.
8. method according to claim 7, is characterized in that, described MCU also comprises reading circuit, and described laser also comprises: FLASH; Described method also comprises:
Described reading circuit reads the level work debugging value in the pre-electric current debugging value in pre-electric current register, the secondary work debugging value in the second work register and the first work register;
Described write circuit is adopted described pre-electric current debugging value, secondary work debugging value and a level work debugging value to be written in FLASH.
9. method according to claim 8, is characterized in that, described method also comprises:
When working on power next time, described write circuit is adopted to write in pre-electric current register by the pre-electric current debugging value in the described FLASH of being stored in;
Adopt described write circuit by described secondary work debugging value write second work register be stored in FLASH;
Adopt described write circuit by described level work debugging value write first work register be stored in FLASH.
10. a laser, is characterized in that, described laser comprises: MCU, the CPLD be connected with described MCU, a stage drive circuit, secondary drive circuit, primary pump and two stage pump; Described MCU comprises: write circuit, the second work register; Described CPLD comprises, and first starts register, second starts register, pre-electric current register and the first work register;
Described write circuit is enabled state for writing described first startup register, and writing described second startup register is enabled state;
A described stage drive circuit, provides pre-electric current under starting the enabled state of register described first, and, provide and one-level operating current under starting the enabled state of register described second;
Described primary pump, under starting the enabled state of register described first, the exploring laser light that power is directly proportional to described pre-electric current is sent when receiving pre-electric current, and, under starting the enabled state of register described second, when receiving one-level operating current, send the seed laser that positive frequency range is directly proportional to described one-level operating current;
Described secondary drive circuit, provides secondary work electric current under starting the enabled state of register described second;
Described two stage pump, under starting the enabled state of register described second, carries out power amplification to the seed laser that described primary pump sends, sends the high power laser light that power is directly proportional to described secondary work electric current;
Described second work register, for debugging described secondary work electric current;
Described first work register, for debugging described one-level operating current.
11. lasers according to claim 10, is characterized in that, described CPLD also comprises: ON-OFF control circuit; Described laser also comprises: one-level digital to analog converter, one-level digital switch, and described one-level digital switch input is connected with one-level digital to analog converter, and the output of described one-level digital switch is connected with a stage drive circuit;
Described ON-OFF control circuit, under starting the enabled state of register described first, opens described one-level digital switch;
Described one-level digital to analog converter, provides pre-voltage under starting the enabled state of register described first;
A described stage drive circuit, for being pre-electric current by described pre-voltage transitions.
12. lasers according to claim 11, is characterized in that, described one-level digital to analog converter comprises: one-level debugger;
Described write circuit, also for writing pre-electric current debugging value to described pre-electric current register;
Described one-level debugger, for adjusting the pre-voltage that described one-level digital to analog converter provides, the adjusting range of described pre-voltage is directly proportional to pre-electric current debugging value.
13. lasers according to claim 12, is characterized in that, described switching circuit, also for when described second startup register is enable, open described one-level digital switch;
Described one-level digital to analog converter, also under the enabled state of described second startup register, does not reoffer pre-voltage and is to provide one-level operating voltage.
14. lasers according to claim 13, is characterized in that, described laser comprises two-stage digital switch, secondary drive circuit; The input of described two-stage digital switch is connected with described MCU, and the output of described two-stage digital switch is connected with described secondary drive circuit; Described MCU also comprises: secondary digital to analog converter;
Described ON-OFF control circuit, also under the enabled state of described second startup register, opens described two-stage digital switch;
Described secondary digital to analog converter, for providing secondary work voltage;
Described secondary drive circuit, for being two stage pump electric current by described two stage pump voltage transitions.
15. lasers according to claim 14, is characterized in that, described secondary digital to analog converter comprises: secondary debugger;
Described write circuit, also for writing secondary work debugging value to described second work register;
Described secondary debugger, for adjusting the secondary work voltage that described secondary digital to analog converter provides, the adjusting range of described two stage pump voltage is directly proportional to described secondary work debugging value.
16. lasers according to claim 15, is characterized in that, described write circuit, also for writing a level work debugging value to described first work register;
Described one-level debugger, also for adjusting the one-level operating voltage that described one-level digital to analog converter provides, the adjusting range of described one-level operating voltage is directly proportional to a level work debugging value.
17. lasers according to claim 16, it is characterized in that, described MCU also comprises reading circuit, described laser also comprises: FLASH;
Described reading circuit, for reading the level work debugging value in the pre-electric current debugging value in pre-electric current register, the secondary work debugging value in the second work register and the first work register;
Described write circuit, also for described pre-electric current debugging value, secondary work debugging value and a level work debugging value being written in FLASH.
18. lasers according to claim 17, is characterized in that, when working on power next time, described write circuit, also for writing in pre-electric current register by the pre-electric current debugging value in the described FLASH of being stored in;
Described write circuit, also for by described secondary work debugging value write second work register be stored in FLASH;
Described write circuit, also for by described level work debugging value write first work register be stored in FLASH.
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| CN202009157U (en) * | 2011-02-15 | 2011-10-12 | 利尔达科技有限公司 | Optical module based on singlechip control |
| CN103178437A (en) * | 2013-02-27 | 2013-06-26 | 中国科学院武汉物理与数学研究所 | Intelligentialized laser locking device and locking method |
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| JP4179240B2 (en) * | 2004-07-08 | 2008-11-12 | ソニー株式会社 | Laser driving method and laser driving apparatus |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN202009157U (en) * | 2011-02-15 | 2011-10-12 | 利尔达科技有限公司 | Optical module based on singlechip control |
| CN103178437A (en) * | 2013-02-27 | 2013-06-26 | 中国科学院武汉物理与数学研究所 | Intelligentialized laser locking device and locking method |
| CN103606812A (en) * | 2013-11-22 | 2014-02-26 | 武汉虹信通信技术有限责任公司 | Laser light power self-adaptation control method based on MCU |
| CN104332814A (en) * | 2014-10-22 | 2015-02-04 | 苏州佑瑞检测技术有限公司 | Automatically-regulated digital high power driving power supply adopting positive and negative feedback |
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