CN110320176A - A kind of tunable light source device and control method near infrared spectrum detection - Google Patents
A kind of tunable light source device and control method near infrared spectrum detection Download PDFInfo
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- CN110320176A CN110320176A CN201910597208.9A CN201910597208A CN110320176A CN 110320176 A CN110320176 A CN 110320176A CN 201910597208 A CN201910597208 A CN 201910597208A CN 110320176 A CN110320176 A CN 110320176A
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- 238000001514 detection method Methods 0.000 title claims abstract description 29
- 238000002329 infrared spectrum Methods 0.000 title claims abstract description 26
- 238000000034 method Methods 0.000 title claims abstract description 9
- 230000005540 biological transmission Effects 0.000 claims abstract description 47
- 210000002683 foot Anatomy 0.000 claims abstract description 17
- 238000005286 illumination Methods 0.000 claims abstract description 12
- 230000003287 optical effect Effects 0.000 claims description 16
- 238000009434 installation Methods 0.000 claims description 12
- 239000013307 optical fiber Substances 0.000 claims description 12
- 238000005096 rolling process Methods 0.000 claims description 12
- JEIPFZHSYJVQDO-UHFFFAOYSA-N ferric oxide Chemical compound O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 5
- 230000001360 synchronised effect Effects 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 9
- 235000013399 edible fruits Nutrition 0.000 description 7
- 238000005192 partition Methods 0.000 description 5
- 230000001105 regulatory effect Effects 0.000 description 4
- 230000007812 deficiency Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000009659 non-destructive testing Methods 0.000 description 2
- 238000001228 spectrum Methods 0.000 description 2
- 238000004497 NIR spectroscopy Methods 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008450 motivation Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/01—Arrangements or apparatus for facilitating the optical investigation
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
- G01N21/35—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light
- G01N21/3563—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light for analysing solids; Preparation of samples therefor
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
- G01N21/35—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light
- G01N21/359—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light using near infrared light
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D23/00—Control of temperature
- G05D23/19—Control of temperature characterised by the use of electric means
- G05D23/20—Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature
Abstract
A kind of tunable light source device and control method near infrared spectrum detection, it includes that illumination parameter adjusts unit and sample placement point, it includes the multiple executing agencies for surrounding sample placement point setting that illumination parameter, which adjusts unit, and angle adjusting mechanism is arranged in the lower section of each executing agency；Executing agency includes sequentially connected adjustment seat, bracket, L-type panel seat, light source assembly, and bracket and L-type panel seat form four bar control structure of double parallel, the hinged line of centres of the hinged line of centres of the L-type panel seat and two bracket cantilevers, the light beam irradiation center line of light source and adjustable inclination plate and two stent foots is crossed to form the centre of motion of executing agency, the centre of motion of each executing agency intersects at same point, and is overlapped with the sample center of sample placement point.The present invention realizes two kinds of acquisition modes of diffusing transmission and diffusing reflection on a near-infrared spectrum detection device, and the lighting angle of light source and luminous range are adjustable.
Description
Technical field
The present invention relates to a kind of detection of agricultural products light source more particularly to a kind of tunable light sources near infrared spectrum detection
Device and control method.
Background technique
Now, Near Infrared Spectroscopy Detection Technology develops rapidly in China, and light source is near infrared spectrum non-destructive testing to pass
It is important.Diffusing transmission or this single spectra collection mode of diffusing reflection are generally used on a set of spectrum detection device at present, and
The center of multiple light courcess device light source radiating angle and light source irradiation distance can not soft readjustment, with adaptive different size of fruit
Center.Light source irradiation distance, light source radiating angle, light source center position manually adjust inconvenience, not only time-consuming and laborious, but also reduce
The operability of near infrared spectrum test experience and the accuracy of experimental data.
The Chinese invention patent application of Publication No. CN103487396A discloses a kind of adjustable near-infrared of illumination parameter
Sugar degree non-destructive testing device, by adjusting the irradiating angle of light source, or position of the change light source in lamp support sliding slot
It sets, achievees the purpose that the different fruit positions of detection, different size fruit and variety classes fruit.By changing lamp support in shape
Position in bracket chute, thus it is possible to vary light source impinges upon the size of intensity on fruit, so as to detect different peel thicknesses and
Different size of fruit.But this scheme still has following deficiency: (1) it can only realize that near infrared spectral transmission detects, it can not
Realize near infrared spectrum reflection detection；(2) light source radiating angle and irradiation distance need to manually adjust, light source radiating angle and irradiation
The center of distance can not adaptively be overlapped adjusting with the center of different size sample.
Summary of the invention
The technical problem to be solved by the present invention is to overcome the deficiencies in the prior art, a kind of light source radiating angle and light source are provided
Irradiation distance can automatically adjust, and adapt to the tunable light source device near infrared spectrum detection of different size fruit detection
And control method.
In order to solve the above technical problems, the present invention provides a kind of tunable light source device near infrared spectrum detection,
Including cabinet, setting illumination parameter adjusts unit and sample placement point in the cabinet, wherein
It includes multiple executing agencies around sample placement point setting that the illumination parameter, which adjusts unit, each executing agency
Angle adjusting mechanism is arranged in lower section；
Each executing agency includes the adjustment seat being fixedly connected with cabinet, the bracket hinged with adjustment seat, hinged with bracket
L-type panel seat, the light source assembly that is mounted on L-type panel seat, and the hinged line of centres of the L-type panel seat and bracket, light source group
The centre of motion of the crosspoint of the hinged line of centres of the light beam irradiation center line and adjustment seat and bracket of part as executing agency,
The centre of motion of each executing agency intersects at same point, and is overlapped with the sample center of sample placement point；
The adjustment seat includes the adjustment seat bottom plate being fixedly connected with cabinet, the adjusting hinged with the bracket and adjustment seat bottom plate
Inclination angle plate is arranged ratchet adjustable positioning mechanism, adjustable inclination plate is made to be adjustable certain between adjustable inclination plate and adjustment seat bottom plate
One inclination angle and self-locking fixation；
The bracket include two with the adjustment seat stent foot hinged and disposed in parallel, two it is hinged with the L-type panel seat
And bracket cantilever disposed in parallel, and the other end of two stent foots connects into parallel four side with the other end of two bracket cantilevers
The hinged line of centres of shape articulated structure, the L-type panel seat and two bracket cantilevers is parallel to two stent foots, makes bracket and L
Template seat forms four bar control structure of double parallel；
The light source assembly includes expansion link mechanism, and light source is arranged in the end of expansion link mechanism；
The angle adjusting mechanism includes first motor and multiple 90 degree of steerings that the multiple executing agency is arranged in a one-to-one correspondence
The push rod connecting with the bracket is respectively set in each 90 degree of steering mechanism in mechanism, and the output shaft of first motor is sequentially connected drive
Dong Ge90Du steering mechanism, Shi Ge90Du steering mechanism pass through the light source assembly in its push rod driving respective holder around light source respectively
Irradiate central point rotation.
The present invention irradiates center line in the light beam of the hinged line of centres of L-type panel seat and two bracket cantilevers, light source assembly
And the crosspoint of the hinged line of centres of adjustable inclination plate and two stent foots, it coincides with the center of different size sample fruit
Near infrared spectrum detection is realized afterwards, it in addition can be the case where each light source irradiates central point constant (executing agency's center of rotation is constant)
Under, the first motor by starting angle adjustment mechanism can automatically adjust to lighting angle by executing agency, and can lead to
The umber of pulse setting of the stepper motor of light source assembly expansion link mechanism is crossed to adjust the length of expansion link mechanism, thus realization pair
The automatic adjustment of luminous range.
Further, the inner cavity top installation reflection collimating mirror of the cabinet, bottom setting transmission collimating mirror, and reflect quasi-
Straight mirror is oppositely arranged with transmission collimating mirror, reflects between collimating mirror and transmission collimating mirror and the sample placement point is arranged, and reflection is quasi-
Straight mirror connects one end of controllable optical path switcher with transmission collimating mirror through optical fiber respectively, and the other end of controllable optical path switcher is through light
Fibre connection spectrometer, keeps the present invention that diffusing transmission and diffusing reflection is integrated, when use can carry out transmission or reflection as needed
Optical path switching.
Further, it further includes temperature adjustment module that the illumination parameter, which adjusts unit, which includes peace
For adjusting the temperature controller of spectrometer temperature, the temperature sensor being mounted in cabinet, being mounted below spectrometer
Radiator fan in case side wall, temperature sensor access in the light source control circuit of the light source assembly, when temperature sensor is examined
It measures temperature in chassis and when the room temperature temperature difference reaches setting value, the power supply of light source is automatically cut off, to avoid temperature to spectrometer
Influence.
Further, the ratchet adjustable positioning mechanism includes the rotating shaft terminal for being fixedly mounted on the adjustable inclination plate
The first and second ratchet, be hingedly mounted on the pawls of adjustment seat bottom plate two sides, and the first and second ratchet installation direction on the contrary,
One end of two pawls is connect with the adjustment seat bottom plate through spring respectively, the other end respectively with the first ratchet or the second ratchet card
If in this way, adjustable inclination plate can be adjusted to clockwise or counterclockwise to the angle needed by the first and second ratchet, and passing through the
One, the card of two ratchets and pawl setting position is realized self-locking.
Further, 90 degree of steering mechanism respectively include mounting base, and belt pulley is fixedly installed in mounting base and ushers to seat
Bearing, rolling bearing units are interior to install transmission shaft, and transmission shaft and belt pulley are connected through gear drive, and are fixedly connected on transmission shaft
The push rod.
Further, light source lamp socket is fixedly mounted in the push rod top of the expansion link mechanism, installs light source on light source lamp socket
And polarizing filter and diaphragm seat are successively installed in light bulb, the inner cavity front end of light bulb, assembled installs diaphragm, and diaphragm in diaphragm seat
Size can replace as needed.
Further, the pivot of the transmission shaft connection angular transducer of one 90 degree of steering mechanism, to make lighting angle
Change is automatically detected.
Further, there are four executing agency's settings, 90 degree of steering mechanism include and four executing agencies pair
The first, second, third, fourth 90 degree of steering mechanism that should be arranged, and the skin of the first, second, third, fourth 90 degree of steering mechanism
Belt wheel is sequentially connected by a plurality of belt Z-type.
Further, the inner cavity top installation reflection collimating mirror height adjustment mechanism of the cabinet, reflects collimating mirror height
Reflection collimation microscope base is fixedly mounted in the push rod top of regulating mechanism, and the reflection collimating mirror is mounted on reflection collimation microscope base；Institute
The intracavity bottom installation transmission collimating mirror height adjustment mechanism of cabinet is stated, the push rod top of transmission collimating mirror height adjustment mechanism is solid
Dingan County's dress transmission collimation microscope base, transmission collimate and install the transmission collimating mirror on microscope base.
In order to solve the above technical problems, the present invention also provides the tunable light sources for being used near infrared spectrum detection described in one kind
Apparatus control method comprising following step:
S1, when lighting angle is adjusted, start first motor, it is synchronous to drive each 90 degree steering mechanism, and then by 90 degree
The lighting angle that steering mechanism interlocks push rod and the bracket of executing agency is driven to make sample changes；
S2, when luminous range is adjusted, start the stepper motor of expansion link mechanism, pass through the umber of pulse of setting stepper motor
The length for adjusting expansion link mechanism, changes the luminous range of sample；
S3, to the intensity of light source adjust when, light source is arranged lights number and various combination mode, make later light source preheat 20 minutes
?.
Detailed description of the invention
Fig. 1 is a kind of overall structure diagram of the tunable light source device near infrared spectrum detection of the present invention.
Fig. 2 is a kind of main view of the tunable light source device near infrared spectrum detection of the present invention.
Fig. 3 is the structural schematic diagram of executing agency of the present invention.
Fig. 4 is the main view and executing agency's center of rotation schematic diagram of executing agency of the present invention, and circular dashed line indicates in figure
Lamp motion track.
Fig. 5 is the structural schematic diagram of adjustment seat of the present invention.
Fig. 6 is the main view of bracket of the present invention.
Fig. 7 is the main view of L-type panel seat of the present invention.
Fig. 8 is the structural schematic diagram of light source assembly of the present invention.
Fig. 9 is light source assembly schematic cross-sectional view of the present invention.
Figure 10 is angle adjusting mechanism schematic diagram of the present invention.
Figure 11 is the 4th 90 degree of steering mechanism's structural schematic diagram of the invention.
Figure 12 is the overall structure diagram that illumination parameter of the present invention adjusts unit and integrated optical path unit.
Figure 13 is light supply apparatus work flow diagram of the present invention.
In figure:
(1) executing agency；(10) adjustment seat；(101) adjustment seat bottom plate；(102) first ratchets；(103) adjustable inclination strip seat
Bearing；(104) second ratchets；(105) adjustable inclination plate；(106) stent foot rolling bearing units；(107) pawl；(108) spring；
(11) bracket；(111) stent foot；(112) bracket cantilever；(12) panel seat rolling bearing units；(13) L-type panel seat；(131) arc groove；
(132) hinged circular hole；(14) light source assembly；(140) expansion link mechanism；(142) light source lamp socket；(143) light source；(144) light bulb；
(145) radiator fan；(146) fastener；(147) polarizing filter；(148) diaphragm seat；(149) diaphragm；(O) executing agency turns
Dynamic center；
(2) angle adjusting mechanism；(21) first motor；(22-25) the first, second, third, fourth 90 degree of steering mechanism；(251)
Rolling bearing units；(252) transmission shaft；(253) push rod；(254) mounting base；(255) belt pulley；(26) angular transducer；(27) U-shaped
Seat；
(3) integrated optical circuit unit；(30) spectrometer；(31) spectrometer trunk optical fiber；(32) controllable optical path switcher；(33) it transmits
Branch optical fibers；(34) collimating mirror height adjustment mechanism is transmitted；(341) transmission collimation microscope base；(35) collimating mirror is transmitted；(36) it reflects
Collimating mirror；(37) collimating mirror height adjustment mechanism is reflected；(371) reflection collimation microscope base；(38) branch optical fibers are reflected；
(4) spectrometer temperature controller；
(5) temperature sensor；
(6) radiator fan；
(7) partition；(71) regulating tank；
(8) cabinet.
Specific embodiment
Below in conjunction with specific preferred embodiment, the invention will be further described, but not thereby limiting the invention
Protection scope.
For ease of description, the description of the relative positional relationship (such as: upper and lower, left and right) of each component is according to explanation
Restriction effect is not played to the structure of this patent come what is be described in the Butut direction of book attached drawing.
Embodiment 1:
As shown in Figs. 1-2, the present invention includes illumination parameter tune for one embodiment of tunable light source device of near infrared spectrum detection
Save unit and integrated optical path unit 3.Illumination parameter adjust unit include four executing agencies 1 being set on cabinet internal partition,
It is set to the angle adjusting mechanism 2 and temperature adjustment module of 1 lower section of executing agency.
As shown in Figure 3-4, executing agency 1 includes adjustment seat 10, bracket 11, panel seat rolling bearing units 12, L-type panel seat 13, light
Source component 14, adjustment seat 10 are fixedly mounted on cabinet internal partition, and bracket 11 and adjustment seat 10 are hinged, and panel seat 13 passes through panel seat band
Seat bearing 12 is mounted on bracket 11, and light source assembly 14 is mounted on L-type panel seat 13.
As shown in figure 5, adjustment seat 10 includes adjustment seat bottom plate 101, the first and second ratchet 102,104, adjustable inclination strip seat
Bearing 103, adjustable inclination plate 105, stent foot rolling bearing units 106, stent foot rolling bearing units 106 are fixedly installed to adjustable inclination plate
On 105, adjustable inclination plate rolling bearing units 103 are fixedly mounted on one end of adjustment seat bottom plate 101, and adjustable inclination plate 105 passes through it
Rotary shaft is installed on adjustable inclination plate rolling bearing units 103, and the first and second ratchet 102,104 is installed to the rotation of adjustable inclination plate 105
Both ends of the shaft, and the installation direction of the first and second ratchet 102,104 is on the contrary, the two sides of adjustment seat bottom plate 101 are respectively articulated with pawl
107, one end of pawl 107 is connect with adjustment seat bottom plate 101 through spring 108, and the other end is set with the first and second ratchet 102,104 card,
Adjustable inclination plate 105 can be rotated clockwise or counterclockwise by certain angle by the first and second ratchet 102,104 in this way, and led to
The card for crossing the first and second ratchet 102,104 and pawl 107 sets the lock-bit for realizing adjustable inclination plate 105.Adjustable inclination plate 105
Different angle, determine the adjusting range of light source radiating angle.
As shown in fig. 6, bracket 11 includes two hinged and stent foot 111, two disposed in parallel with adjustable inclination plate 105
The bracket cantilever 112 hinged and disposed in parallel with L-type panel seat 13,111 articulated stand cantilever 112 of stent foot, and two stent foots
111 one end and one end of two bracket cantilevers connect into parallelogram articulated structure, and L-type panel seat 13 and two brackets are outstanding
The hinged line of centres of arm 112 is parallel to two stent foots 111, makes to form four bar of double parallel between bracket 11 and L-type panel seat 13
Control structure.
As shown in fig. 7, arc groove 131 and hinged circular hole 132 are arranged on L-type panel seat 13, and arc groove 131 and hinged circular hole
The setting of 132 concentrics, light source assembly 14 is hinged at hinged circular hole 132 through fastener 146 with L-type panel seat 13, and light source assembly
14 fasteners 146 through being plugged in arc groove 131 connect, and are not installed only at light source assembly 14 on L-type panel seat 13, and can edge
Arc groove 131 slides.
As Figure 8-9, light source assembly 14 include expansion link mechanism 140, light source lamp socket 142, light source 143, light bulb 144,
Radiator fan 145, fastener 146, polarizing filter 147, diaphragm seat 148, diaphragm 149, light source lamp socket 142, which is fixedly mounted on, to be stretched
The push rod top of rod reducing machine structure 141, light source 143 are mounted on light source lamp socket 142, and light bulb 144 and light source lamp socket 142 cooperate, lamp
Polarizing filter 147 is installed on the inner cavity front end ladder of cylinder 144, and there is externally threaded diaphragm seat 148 to be axially fixed in light bulb
144 front end, and polarizing filter 147 is limited, the front end of diaphragm seat 148 is provided with slot, and diaphragm 149 is put into slot.In the slot
Replaceable different size diaphragm 149 adjusts spot size with this.Radiator fan 145 is mounted in light bulb 144 with identical wind direction, point
Do not cooperated with certain revolving speed and is radiated to light source 143.Expansion link mechanism 140 includes the telescopic rod under step motor control, can root
The distance of stretch out and draw back of telescopic rod is adjusted according to the umber of pulse of stepper motor.
As shown in Fig. 4, Fig. 6, Fig. 7, the light beam of the light source 143 of executing agency 1 irradiation center line, L-type panel seat 13 and two
The crosspoint of the hinged line of centres of the hinged line of centres of bracket cantilever 112, adjustable inclination plate 105 and two stent foots 111
For the centre of motion O of executing agency 1.The centre of motion of each executing agency intersects at same point, and the sample with sample placement point
Center is overlapped.
As shown in Figure 10, angle adjusting mechanism 2 includes first motor 21, the first, second, third, fourth 90 degree of turning machines
The structure of structure 22-25, angular transducer 26, the first, second, third, fourth 90 degree of steering mechanism 22-25 are identical, herein only with
Illustrate its structure for 4th 90 degree of steering mechanism 25.4th 90 degree of steering mechanism 25 includes that belt pulley 255 and band is fixedly mounted
The mounting base 254 of seat bearing 251, hinged transmission shaft 252, transmission shaft 252 are passed with belt pulley 255 through gear on rolling bearing units 251
The connection of motivation structure, and push rod 253 is fixedly connected on transmission shaft 252, one end of push rod 253 passes through the regulating tank being arranged on partition 7
71 is hinged with bracket 11.The belt pulley of the first, second, third, fourth 90 degree of steering mechanism 22-25 passes through a plurality of belt Z-type and passes
Dynamic connection, angular transducer 26 are fixedly mounted on the rolling bearing units 251 of the 4th 90 degree of steering mechanism 25 by U-shaped seat 27, angle
The pivot of degree sensor 26 is fixedly installed on the transmission shaft 252 of the 4th 90 degree of steering mechanism 25, and first motor 21 passes through belt
Drive the one 90 degree of steering mechanism 22, so synchronous driving second, third, the 4th 90 degree of steering mechanism 23-25, first, second,
Third, the 4th 90 degree of steering mechanism 22-25 respectively drive the bracket 11 connecting with its push rod and rotate, to realize lighting angle
Automatic adjustment, while the 4th 90 degree of 252 driving angle sensor 26 of steering mechanism's transmission shaft pivots, angular transducer 26
Lighting angle regulated value is detected, and feeds back and arrives control system.
As shown in Figure 1 and Figure 2, temperature adjustment module includes temperature controller 4, temperature sensor 5, radiator fan 6, temperature
Controller 4 is mounted on spectrometer 30 in the following, radiator fan 6 is mounted on the inner wall of cabinet 8, and temperature sensor 5 is mounted on cabinet 8
On internal partition 7.Temperature controller 4 is used to adjust the temperature of spectrometer 30.The control loop of the access light source 143 of temperature sensor 5
In, when temperature sensor 5 detects temperature in chassis and the room temperature temperature difference reaches setting value, automatically cut off the power supply of light source 143.
As shown in figure 12, integrated optical circuit unit 3 includes spectrometer 30, spectrometer trunk optical fiber 31, controllable optical path switcher
32, branch optical fibers 33, transmission collimating mirror height adjustment mechanism 34, transmission collimating mirror 35, reflection collimating mirror 36, reflection collimation are transmitted
Mirror height adjustment mechanism 37, reflection branch optical fibers 38；The inner cavity top installation reflection collimating mirror height adjustment mechanism 37 of cabinet 8,
Bottom installation transmission collimating mirror height adjustment mechanism 34, the push rod top of reflection collimating mirror height adjustment mechanism 37 is fixedly mounted anti-
Collimation microscope base 371 is penetrated, reflection collimating mirror 36 is mounted on reflection collimation microscope base 371, transmission collimating mirror height adjustment mechanism 34
Transmission collimation microscope base 35 is fixedly mounted in push rod top, installation transmission collimating mirror 35 on transmission collimation microscope base 35；Reflect collimating mirror 36
It is reflected branch optical fibers 38 and connects controllable optical path switcher 32, transmission collimating mirror 35 connects controllable optical path through transmiting branch optical fibers 33
Switch 32, controllable optical path switcher 32 connects spectrometer 30 through spectrometer trunk optical fiber 31, to be switched by controllable optical path
Diffusing reflection or diffusing transmission acquisition optical path can be switched in device 32.
As shown in figure 13, control method of the present invention for the tunable light source device of near infrared spectrum detection, including it is following
Step:
S1, when lighting angle is adjusted, start first motor, it is synchronous to drive each 90 degree steering mechanism, and then by 90 degree
The lighting angle that steering mechanism interlocks push rod and the bracket of executing agency is driven to make sample changes；
S2, when luminous range is adjusted, start the stepper motor of expansion link mechanism, pass through the umber of pulse of setting stepper motor
The length for adjusting expansion link mechanism, changes the luminous range of sample；
S3, to the intensity of light source adjust when, light source is arranged lights number and various combination mode, make later light source preheat 20 minutes
?.
The above is only the preferred embodiment of the application, not does any type of limitation to the application, although this Shen
Please disclosed as above with preferred embodiment, however not to limit the application, any person skilled in the art is not taking off
In the range of technical scheme, a little variation or modification are made using the technology contents of the disclosure above and is equal to
Case study on implementation is imitated, is belonged in technical proposal scope.
Claims (10)
1. a kind of tunable light source device near infrared spectrum detection, including cabinet (8), the cabinet is interior to be arranged illumination parameter
Adjust unit and sample placement point, which is characterized in that
It includes multiple executing agencies (1) around sample placement point setting that the illumination parameter, which adjusts unit, respectively executes machine
Angle adjusting mechanism (2) are arranged in the lower section of structure；
Each executing agency (1) include the adjustment seat (10) being fixedly connected with cabinet, with the hinged bracket of adjustment seat (11),
The L-type panel seat (13) hinged with bracket, the light source assembly (14) being mounted on L-type panel seat, and the hinge of the L-type panel seat and bracket
The crosspoint for connecing the hinged line of centres of the line of centres, the light beam irradiation center line of light source assembly and adjustment seat and bracket, which is used as, to be held
The centre of motion of row mechanism, the centre of motion of each executing agency intersect at same point, and heavy with the sample center of sample placement point
It closes；
The adjustment seat includes the adjustment seat bottom plate (101) being fixedly connected with cabinet, hinged with the bracket and adjustment seat bottom plate
Adjustable inclination plate (105), between adjustable inclination plate and adjustment seat bottom plate be arranged ratchet adjustable positioning mechanism, make adjustable inclination plate
It is adjustable a certain inclination angle and self-locking fixation；
The bracket includes that two hinged with the adjustment seat and stent foot (111) disposed in parallel, two with the L-type panel seat
Bracket cantilever (112) hinged and disposed in parallel, and the other end of two stent foots is connect with the other end of two bracket cantilevers
At parallelogram articulated structure, the hinged line of centres of the L-type panel seat and two bracket cantilevers is parallel to two stent foots,
Bracket and L-type panel seat is set to form four bar control structure of double parallel；
The light source assembly includes expansion link mechanism (140), and light source (143) are arranged in the push rod top of expansion link mechanism；
The angle adjusting mechanism includes first motor (21), be arranged in a one-to-one correspondence with the multiple executing agency multiple 90 degree
Steering mechanism, is respectively set the push rod (253) connecting with the bracket in each 90 degree of steering mechanism, the output shaft of first motor according to
Secondary connection drives each 90 degree of steering mechanism, and Shi Ge90Du steering mechanism passes through the light source group in its push rod driving respective holder respectively
Part is around light source irradiation central point rotation.
2. a kind of tunable light source device near infrared spectrum detection according to claim 1, which is characterized in that described
Inner cavity top installation reflection collimating mirror (36) of cabinet, bottom setting transmission collimating mirror (35), and reflection collimating mirror and transmission are quasi-
Straight mirror is oppositely arranged, and reflects between collimating mirror and transmission collimating mirror and the sample placement point is arranged, and reflection collimating mirror and transmission are quasi-
Straight mirror connects one end of controllable optical path switcher (32) through optical fiber respectively, and the other end of controllable optical path switcher connects light through optical fiber
Spectrometer (30).
3. a kind of tunable light source device near infrared spectrum detection according to claim 1, which is characterized in that described
It further includes temperature adjustment module that illumination parameter, which adjusts unit, which includes being mounted on spectrometer (30) to be used for below
Adjust spectrometer temperature temperature controller (4), be mounted in cabinet temperature sensor (5), be mounted in case side wall dissipate
Hot-air fan (6), temperature sensor access in the light source control circuit of the light source assembly, when temperature sensor detects in cabinet
When temperature is higher than set temperature, the power supply of light source is automatically cut off, the power supply of turn on automatically light source when lower than set temperature.
4. a kind of tunable light source device near infrared spectrum detection according to claim 1, which is characterized in that described
Ratchet adjustable positioning mechanism include be fixedly mounted on the rotating shaft terminal of the adjustable inclination plate the first and second ratchet (102,
104) it, is hingedly mounted on the pawl (107) of adjustment seat bottom plate two sides, and the installation direction of the first and second ratchet is on the contrary, two spine
One end of pawl is connect with the adjustment seat bottom plate through spring (108) respectively, the other end respectively with the first ratchet or the second ratchet card
If.
5. a kind of tunable light source device near infrared spectrum detection according to claim 1, which is characterized in that described
90 degree of steering mechanism respectively include mounting base (254), and belt pulley (255) and rolling bearing units (251), band are fixedly installed in mounting base
Transmission shaft (252) are installed in seat bearing, transmission shaft and belt pulley are connected through gear drive, and institute is fixedly connected on transmission shaft
State push rod (253).
6. a kind of tunable light source device near infrared spectrum detection according to claim 5, which is characterized in that 1
Spend the pivot of transmission shaft connection angular transducer (26) of steering mechanism.
7. a kind of tunable light source device near infrared spectrum detection according to claim 1, which is characterized in that described
Light source lamp socket (142) are fixedly mounted in the push rod top of expansion link mechanism, install the light source (143) and light bulb on light source lamp socket
(144), polarizing filter (147) and diaphragm seat (148) are successively installed in the inner cavity front end of light bulb, and assembled installs light in diaphragm seat
Late (149).
8. a kind of tunable light source device near infrared spectrum detection according to claim 1, which is characterized in that described
There are four executing agency's settings, and 90 degree of steering mechanism are four, and the belt pulley of each 90 degree of steering mechanism passes through a plurality of skin
Band Z-type is sequentially connected.
9. a kind of tunable light source device near infrared spectrum detection according to claim 2, which is characterized in that described
Inner cavity top installation reflection collimating mirror height adjustment mechanism (37) of cabinet, reflects the push rod top of collimating mirror height adjustment mechanism
Reflection collimation microscope base (371) is fixedly mounted, the reflection collimating mirror is mounted on reflection collimation microscope base；The interior bottom of chamber of the cabinet
Transmission is fixedly mounted in the push rod top of portion's installation transmission collimating mirror height adjustment mechanism (34), transmission collimating mirror height adjustment mechanism
It collimates microscope base (35), the transmission collimating mirror is installed on transmission collimation microscope base.
10. the tunable light source apparatus control method described in a kind of any one of claim 1-9 near infrared spectrum detection,
It is characterized by comprising following step:
S1, when lighting angle is adjusted, start first motor, it is synchronous to drive each 90 degree steering mechanism, and then by 90 degree
The lighting angle that steering mechanism interlocks push rod and the bracket of executing agency is driven to make sample changes；
S2, when luminous range is adjusted, start the stepper motor of expansion link mechanism, pass through the umber of pulse of setting stepper motor
The length for adjusting expansion link mechanism, changes the luminous range of sample；
S3, to the intensity of light source adjust when, light source is arranged lights number and various combination mode, make later light source preheat 20 minutes
?.
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| CN110320175A (en) * | 2019-07-04 | 2019-10-11 | 中南林业科技大学 | A kind of near-infrared spectrum detection device and control method |
| CN111014080A (en) * | 2019-12-13 | 2020-04-17 | 浙江大学 | Self-adaptive light source adjusting mechanism and method based on fruit size |
| CN111014080B (en) * | 2019-12-13 | 2020-11-06 | 浙江大学 | Self-adaptive light source adjusting mechanism and method based on fruit size |
| CN112540058A (en) * | 2020-12-24 | 2021-03-23 | 苏州泽达兴邦医药科技有限公司 | Method and device for nondestructively identifying authenticity of traditional Chinese medicinal material through near infrared spectrum analysis |
| CN116519624A (en) * | 2023-07-03 | 2023-08-01 | 生态环境部华南环境科学研究所(生态环境部生态环境应急研究所) | Solid waste harmful ingredient detection system based on image data analysis |
| CN116519624B (en) * | 2023-07-03 | 2023-08-25 | 生态环境部华南环境科学研究所(生态环境部生态环境应急研究所) | Solid waste harmful ingredient detection system based on image data analysis |
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