CN107941475A - A kind of energy measurement and calibration system for large scale laser instrument - Google Patents

A kind of energy measurement and calibration system for large scale laser instrument Download PDF

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Publication number
CN107941475A
CN107941475A CN201711364164.2A CN201711364164A CN107941475A CN 107941475 A CN107941475 A CN 107941475A CN 201711364164 A CN201711364164 A CN 201711364164A CN 107941475 A CN107941475 A CN 107941475A
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CN
China
Prior art keywords
calibration
energy measurement
energy
measurement
module
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Pending
Application number
CN201711364164.2A
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Chinese (zh)
Inventor
唐菱
夏彦文
汪凌芳
王方
彭志涛
邓学伟
马驰
党钊
刘华
周丽丹
房奇
袁强
胡东霞
董军
卢宗贵
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Laser Fusion Research Center China Academy of Engineering Physics
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Laser Fusion Research Center China Academy of Engineering Physics
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Publication date
Application filed by Laser Fusion Research Center China Academy of Engineering Physics filed Critical Laser Fusion Research Center China Academy of Engineering Physics
Priority to CN201711364164.2A priority Critical patent/CN107941475A/en
Publication of CN107941475A publication Critical patent/CN107941475A/en
Pending legal-status Critical Current

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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01JMEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED, VISIBLE OR ULTRA-VIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J1/00Photometry, e.g. photographic exposure meter
    • G01J1/42Photometry, e.g. photographic exposure meter using electric radiation detectors
    • G01J1/4257Photometry, e.g. photographic exposure meter using electric radiation detectors applied to monitoring the characteristics of a beam, e.g. laser beam, headlamp beam
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01MTESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M11/00Testing of optical apparatus; Testing structures by optical methods not otherwise provided for

Abstract

The present invention relates to a kind of energy measurement for large scale laser instrument and calibration system, belong to measurement of laser energy technical field, pop one's head in including energy measurement, AD conversion module, group focuses on module, energy electric calibration component, core network and energy measurement and calibration control platform, the data transmission interface of the energy measurement probe is sequentially connected AD conversion module, group focuses on module and core network, the electric calibration interface of the energy measurement probe is connected by energy electric calibration component with core network, the energy measurement and calibration control platform are connected with core network, the present invention disclosure satisfy that the distributed measurement of large-scale multi-path laser device energy measurement, packet type controls, data and the centralized management of order, calibration process is easy, it is efficient.

Description

A kind of energy measurement and calibration system for large scale laser instrument
Technical field
The invention belongs to measurement of laser energy technical field, relates in particular to a kind of energy for large scale laser instrument Measurement and calibration system.
Background technology
High power solid-state laser device requires to complete the same hair real―time precision measurment to laser energy, its measuring characteristic exists In being limited to light channel structure design, energy measurement probe must be distributed the different spatial that is arranged in device, i.e. distribution Measurement;The architecture design of control system is limited to, spatially meets that multiple light beams of certain relation are divided into a group, is carried out It is uniformly controlled, i.e., packet type controls;All data, order are all uniformly processed by centralized control system, i.e. the collection of data and order Middle management and control.And these energy meters must also periodic calibration, if by the way of optical alignment, then then need periodically to complete The dismounting of hundreds and thousands of set energy meters, greatly reduces the operational efficiency of device, it is, thus, sought for a kind of new laser school Accurate mode can be without pulling down the calibration completed under conditions of energy meter to energy meter, and most convenient, quick way are just It is to substitute laser energy using electric flux to carry out calibration of the heating completion to energy meter to energy meter probe.
In existing electric calibration mode, one kind be using resistance wire energy meter pop one's head in surrounding coiling, this mode is most The defects of big is in a calibration process, among having a big chunk energy dissipation to air, to cause the linearity of calibration And photoelectricity equivalence is relatively low;Also a kind of mode is to use sintering process, and planar resistor film is plated on the even body of heat, and this The mode of sample can obtain preferable heating uniformity and photoelectricity equivalence, but this mode is higher to technological requirement, cost It is higher, cost can be significantly increased under conditions of large-scale use is needed.
The content of the invention
For a variety of deficiencies of the prior art, to solve the above-mentioned problems, first propose a kind of for large scale laser instrument Energy measurement and calibration system, the system use the carrier that thin foil hollow resistance is heated as electric calibration, are meeting homogeneous heating The demand to technique and cost can be reduced on the premise of property, photoelectricity equivalence.
To achieve the above object, the present invention provides following technical solution:
A kind of energy measurement and calibration system for large scale laser instrument, including energy measurement probe, AD conversion mould Block, group's centralized processing module, energy electric calibration component, core network and energy measurement and calibration control platform, the energy The data transmission interface of measuring probe is sequentially connected AD conversion module, group's centralized processing module and core network, the energy The electric calibration interface of measuring probe is connected by energy electric calibration component with core network, the energy measurement and calibration control Platform is connected with core network.
Further, group's centralized processing module is arranged to multiple, and the centralized processing module connection of each group is multiple Energy measurement is popped one's head in, and using a set of energy electric calibration component to multigroup energy measurement probe time-sharing multiplex, can not reduce calibration Device development totle drilling cost is reduced in the case of efficiency.
Further, the energy measurement probe includes being arranged in order the absorber of bonding, heat guard, the even body of heat and sensing Device, is provided with thin foil hollow resistance, for being loaded onto electric flux during electric calibration between the even body of the heat and sensor Among energy measurement probe.
Further, the thin foil hollow resistance is pasted on the even body surface face of heat by heat-conducting glue.
Further, the thin foil hollow resistance is alternately arranged into a matrix array with sensor.
Further, the energy measurement probe distal end is provided with a full impregnated glass as shielding window, to reduce measurement And the influence of air-flow and temperature change to measurement in calibration process.
Further, the energy electric calibration component includes power supply output module, the accurate voltage measurement mould being set up in parallel Block, precision current measurement module and multichannel handover module, will export and the function of measurement is decomposed, and can not reduce Ensure measurement accuracy under conditions of power supply fan-out capability.
Further, the power supply output module uses programmable precision power supply, the accurate voltage measurement module and precision High accuracy number voltmeter, high accuracy number ammeter is respectively adopted in current measurement module.
Further, the AD conversion module uses serial interface or TCP/IP interfaces, for focusing on module with group Communicate, group's centralized processing module uses TCP/IP interfaces, and group's centralized processing module passes through the interface and trunk Network connection, sends data to energy measurement and calibration control platform, to meet large-scale multi-path laser device energy measurement Distributed measurement, packet type control, data and the centralized management of order.
Further, the AD conversion module is arranged near energy measurement probe, to shorten the transmission distance of analog signal From, loss of the analog signal in transmitting procedure is reduced, reduces the possibility that analog signal is disturbed in transmitting procedure, can Improve the accuracy of measurement.
The beneficial effects of the invention are as follows:
1st, the present invention uses thin foil hollow resistance as heating carrier, for loading electric flux during electric calibration To energy measurement probe, this design is wound on energy measurement with traditional resistance wire and pops one's head in compared with around, due to adding Heat carrier is evenly distributed so that the mode of heating of electric flux can with the mode of optical alignment close to, simultaneously as Resistance is arranged within energy measurement probe, and loading electric flux almost can all be popped one's head in by energy to be absorbed rather than be dissipated to Among air, first cross-ventilation and variation of ambient temperature influence smaller, its calibrated linear degree higher;With facet coatings resistance Method compare, for this method without high temperature sintering, the requirement to technique and cost is relatively low.
2nd, multichannel handover module is provided with energy electric calibration component of the invention, is existed using multichannel switching switch Switch between the energy measurement probe do not gone the same way, mould is measured to power supply output module, accurate voltage measurement module, precision current Block carries out time-sharing multiplex, efficiently solves the contradiction between device operation efficiency and plant construction cost.
Brief description of the drawings
Fig. 1 is the structure diagram of the present invention;
Fig. 2 is the structure diagram of the energy electric calibration component of the present invention;
Fig. 3 is the energy measurement sonde configuration schematic diagram of the present invention;
Fig. 4 is the thin foil hollow electric resistance structure schematic diagram of the present invention;
Fig. 5 is the distribution map of thin foil hollow resistance and sensor in the embodiment of the present invention two.
In attached drawing:1- energy measurements probe, the even body of 11- absorbers, 12- heat guards, 13- heat, 14- sensors, 15- are thin Paper tinsel hollow resistance, 16- is heat sink, 2-AD modular converters, 3- groups centralized processing module, 4- energy electric calibrations component, 41- power supplys Output module, 42- accurate voltages measurement module, 43- precision currents measurement module, 44- multichannels handover module, 441- multiselects One control circuit, 442- multiselects one switch, 5- core networks, 6- energy measurements and calibration control platform.
Embodiment
It is right with reference to the attached drawing of the present invention in order to make those skilled in the art more fully understand technical scheme Technical scheme carries out clear, complete description, based on the embodiment in the application, those of ordinary skill in the art The other similar embodiments obtained on the premise of creative work is not made, should all belong to the model of the application protection Enclose.In addition, the direction word mentioned in following embodiments, such as " on " " under " " left side " " right side " etc. is only the direction of refer to the attached drawing, Therefore, the direction word used is for illustrative and not limiting the invention.
Embodiment one:
As shown in Figure 1, a kind of energy measurement and calibration system for large scale laser instrument, including energy measurement probe 1st, AD conversion module 2, group's centralized processing module 3, energy electric calibration component 4, core network 5 and energy measurement and calibration control Platform 6 processed, the data transmission interface of the energy measurement probe 1 are sequentially connected AD conversion module 2, group's centralized processing module 3 With core network 5, the electric calibration interface of the energy measurement probe 1 is connected by energy electric calibration component 4 with core network 5, The energy measurement and calibration control platform 6 are connected with core network, and group's centralized processing module 3 is used for realization system Demand to being layered and being grouped control, and be responsible for all data being transmitted to energy measurement and calibration control by core network 5 Platform 6,1 electrical connection of the energy electric calibration component 4 and energy measurement probe, for during calibration having set The energy set is loaded onto energy meter, and is accurately measured, and all data transfers are to core network 5 and by energy measurement And the unified reception of calibration console 6.Energy measurement and calibration console 6 are sent a command to each in system by core network 5 Component, meets the needs of system is to data and order centralized management.
Group's centralized processing module 3 is arranged to multiple, each group centralized processing module 3 connects multiple energy Measuring probe 1, in the present embodiment, group's centralized processing module 3 are provided with 3, each group centralized processing module 3 energy measurement of connection 8 probes 1, as shown in Fig. 2, the energy electric calibration component 4 includes the power supply output mould being set up in parallel Block 41, accurate voltage measurement module 42, precision current measurement module 43 and multichannel handover module 44, the power supply output Module 41 uses programmable precision power supply, and the accurate voltage measurement module 42 and precision current measurement module 43 are respectively adopted High accuracy number voltmeter, high accuracy number ammeter, will export and the function of measurement is decomposed, and can not reduce power supply Ensure measurement accuracy under conditions of fan-out capability, the multichannel handover module 44 includes one control circuit 441 of multiselect and multiselect One switch 442, surveys power supply output module 41, accurate voltage measurement module 42, precision current using multichannel handover module 44 Amount module 43 is controlled, and to the loading of complete pairing energy in a calibration process and accurate measurement, while is reached multichannel and is answered One set of instrument purpose, in the present embodiment, answers 3 groups of energy measurement probe timesharing using a set of energy electric calibration component 4 With device development totle drilling cost can be reduced in the case where not reducing calibration efficiency.
As shown in Figure 3 and Figure 4, energy measurement probe 1 include being arranged in order the absorber 11 of bonding, heat guard 12, The even body 13 of heat, sensor 14 and heat sink 16, are provided with thin foil hollow resistance 15, use between the even body 13 of the heat and sensor 14 Among electric flux to be loaded onto to energy measurement probe 1 during electric calibration, 1 front end of energy measurement probe is provided with One full impregnated glass becomes as shielding window (not shown) to reduce air-flow and temperature in measurement and calibration process Change the influence to measurement, absorber 12 is done into hanging design, reduces the loss of energy in measurement process.In the present embodiment, institute The thickness for stating thin foil hollow resistance 15 is 0.3mm, it is pasted on even 13 surface of body of heat, such setting and biography by heat-conducting glue The resistance wire of system is wound on around energy measurement probe and compares, since heating carrier is evenly distributed so that the heating of electric flux Mode can be with the mode of optical alignment close to simultaneously as resistance is arranged within energy measurement probe, adding Among load electric flux almost all the absorption of energy probe rather than can be dissipated to air, first cross-ventilation and environment temperature Change influences smaller, its calibrated linear degree higher;Compared with the method for facet coatings resistance, this method without high temperature sintering, Requirement to technique and cost is relatively low.
The AD conversion module 2 uses serial interface or TCP/IP interfaces, is carried out for focusing on module 3 with group Communication, it is preferable that using serial interface, the anti-electromagnetic interference capability of signal transmission can be improved, the group focuses on module 3 use TCP/IP interfaces, and group's centralized processing module 3 is connected by the interface with core network 5, sends data to energy Measurement and calibration control platform 6, to meet the distributed measurement of large-scale multi-path laser device energy measurement, packet type control, number According to this and order centralized management.
The AD conversion module 2 uses Miniaturization Design, is disposed near energy measurement probe 1, so as to shorten The distance of energy measurement probe 1 and sample circuit, to shorten the transmission range of analog signal, reduces analog signal and is being transmitted across Loss in journey, reduces the possibility that analog signal is disturbed in transmitting procedure, can improve the accuracy of measurement.
The energy measurement process of the system is as follows:
During measurement, the energy measurement and calibration console 6 send measuring command, the absorber 11 of energy measurement probe 1 Temperature raises after absorbing the energy of laser pulse, through overheating even body 13 after transverse direction is homogenized into trip temperature, is visited by sensor 14 Measure and become voltage signal.Voltage signal is converted into digital signal and is transmitted to group's centralized processing module by AD conversion module 2 3, group focuses on module 3 and the data is passed through the network interface transfers of TCP/IP to core network 5, energy measurement and school The upper computer software of quasi- console 6 can directly read adopt data waveform, can also export according to the calculation of configuration The energy value that method, coefficient are calculated, so as to obtain the energy of incident laser.
The calibration process of the system is as follows:
Calibration process be divided into separate unit set calibration and more set polls calibration, wherein, separate unit set calibration when, energy measurement and Calibrate console 6 and send calibration command, power supply output module 41 starts, and starts to export a waveform set, at the same time Accurate voltage measurement module 42, precision current measurement module 43 start measurement function, and multichannel handover module 44, which is opened, needs school The switch of quasi-optical road energy meter, while start-up team's centralized processing module 3 and AD conversion module 2, the scheduled time (multichannel 44 opening time of handover module, the time have to be larger than current output time and AD time of measuring) reach after, power supply is defeated Go out that module 41 is closed, accurate voltage measurement module 42 is closed after being transmitted back to measured value, precision current measurement module 43 is transmitted back to survey Closed after value, group's centralized processing module 3 returns to this measurement data, and the switch of multichannel handover module 44 is closed, in energy In the host computer of measurement and console 6, after receiving data above, loading electric flux and measured value are calculated, obtains this calibration Coefficient, calibration are completed.
During more set poll calibrations, calibration flow and the separate unit set calibration of single are no different, and multichannel handover module 44 is successively Each way switch is opened in turn, is completed in the group after the calibration of all energy measurement probes 1, this time calibration flow terminates.
Embodiment two:
As shown in figure 5, the present embodiment part identical with embodiment one repeats no more, unlike:
The thin foil hollow resistance 15 by the way of the arrangement of a matrix array is alternately arranged into sensor 14, Such arrangement can reach the technique effect same with embodiment one.
The present invention is described in detail above, it is described above, it is only the preferred embodiments of the invention, when not The scope of the present invention can be limited, i.e., it is all to make equivalent changes and modifications according to the application scope, it all should still belong to the present invention and cover model In enclosing.

Claims (10)

1. a kind of energy measurement and calibration system for large scale laser instrument, it is characterised in that including energy measurement probe, AD Modular converter, group's centralized processing module, energy electric calibration component, core network and energy measurement and calibration control platform, institute The data transmission interface for stating energy measurement probe is sequentially connected AD conversion module, group's centralized processing module and core network, institute The electric calibration interface for stating energy measurement probe is connected by energy electric calibration component with core network, the energy measurement and calibration Control platform is connected with core network.
A kind of 2. energy measurement and calibration system for large scale laser instrument according to claim 1, it is characterised in that Group's centralized processing module is arranged to multiple, each group centralized processing module connects multiple energy measurement probes.
A kind of 3. energy measurement and calibration system for large scale laser instrument according to claim 1, it is characterised in that The energy measurement probe includes being arranged in order the absorber of bonding, heat guard, the even body of heat and sensor, and the even body of heat is with passing Thin foil hollow resistance is provided between sensor.
A kind of 4. energy measurement and calibration system for large scale laser instrument according to claim 3, it is characterised in that The thin foil hollow resistance is pasted on the even body surface face of heat by heat-conducting glue.
A kind of 5. energy measurement and calibration system for large scale laser instrument according to claim 3, it is characterised in that The thin foil hollow resistance is alternately arranged into a matrix array with sensor.
A kind of 6. energy measurement and calibration system for large scale laser instrument according to claim 3, it is characterised in that The energy measurement probe distal end is provided with a full impregnated glass as shielding window.
A kind of 7. energy measurement and calibration system for large scale laser instrument according to claim 1, it is characterised in that The energy electric calibration component includes power supply output module, accurate voltage measurement module, precision current the measurement mould being set up in parallel Block and multichannel handover module.
A kind of 8. energy measurement and calibration system for large scale laser instrument according to claim 7, it is characterised in that The power supply output module uses programmable precision power supply, accurate voltage measurement module and precision current the measurement module difference Using high accuracy number voltmeter, high accuracy number ammeter.
A kind of 9. energy measurement and calibration system for large scale laser instrument according to claim 1, it is characterised in that The AD conversion module uses serial interface or TCP/IP interfaces, and group's centralized processing module uses TCP/IP interfaces.
10. a kind of energy measurement and calibration system for large scale laser instrument according to claim 9, its feature exist In the AD conversion module is arranged near energy measurement probe, to shorten the transmission range of analog signal.
CN201711364164.2A 2017-12-18 2017-12-18 A kind of energy measurement and calibration system for large scale laser instrument Pending CN107941475A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201711364164.2A CN107941475A (en) 2017-12-18 2017-12-18 A kind of energy measurement and calibration system for large scale laser instrument

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Application Number Priority Date Filing Date Title
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109596228A (en) * 2018-12-14 2019-04-09 中国工程物理研究院激光聚变研究中心 A kind of nanosecond pulse laser waveform measuring device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109596228A (en) * 2018-12-14 2019-04-09 中国工程物理研究院激光聚变研究中心 A kind of nanosecond pulse laser waveform measuring device

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