CN202256157U - Light source exciting device for geological sample determination instrument - Google Patents
Light source exciting device for geological sample determination instrument Download PDFInfo
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- CN202256157U CN202256157U CN 201120359776 CN201120359776U CN202256157U CN 202256157 U CN202256157 U CN 202256157U CN 201120359776 CN201120359776 CN 201120359776 CN 201120359776 U CN201120359776 U CN 201120359776U CN 202256157 U CN202256157 U CN 202256157U
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Abstract
The utility model relates to a light source exciting device for a geological sample determination instrument, comprising a pedestal, a cover plate, a light source control plate, a light source module and an ARM machine, wherein the ARM machine, the cover plate and the light source control plate are fixed on the pedestal by fixing bolts. The ARM machine is connected with the light source control plate through a connection wire; the light source control plate is connected with the light source module through a light source control wire. A detecting light filter is arranged on the cover plate; the pedestal is equipped with a guide rail, a sample heat insulating sheet and a light source cavity; the sample heat insulating sheet is located on the lower end of the light source cavity; the light source module is composed of a module box and an exciting light filter; a light emitting diode and a detecting photoelectric triode are installed inside the module box. The device of the utility model making use of the ARM machine to realize the control and other functions on the light source exciting device is simple in operation, high in automation degree and precise in data detection. The device of the utility model is compact in structure, small in volume, light in weight and convenient in installation, replacement and carriage. In addition, the light intensity of the excited light source is 50-70mW per square centimeter at a position which is 30 mm away from the excited light source.
Description
Technical field
The utility model belongs to the light source technical field, relates to the replaceable excitation light source device with ARM control system, is specifically related to the excitation light source device that a kind of geological sample dating appearance is used.
Background technology
Just be meant the epoch that various geologic events take place on the earth geochron.It comprises two aspect implications: one of which is meant the sequencing that various places matter incident takes place, and is called relative geochron; Its two be meant that each geologic event takes place apart from age in this year owing to mainly be the utilization isotope technology, therefore, be called isotopic geological age (absolute geochronology).This two aspect combines, and just constitutes the complete understanding in epoch that geologic event and the earth, the earth's crust are developed.
Self character to the solid mineral crystal; It grows in the physical environment; The radiation that defective that produces in the crystal generative process and acquired environment bring it all can cause the lattice imperfection of its crystals, forms free energy storage electronics, and is stored in these energy storage electronics in the crystal once the stimulation of external energy; Will launch photon, adopt luminous energy to excite the method for mineral crystal just to be called light and release light.Light is released only a kind of phosphorescence, and under fixing light source and identical shooting conditions, the photon total amount of this phosphorescence is directly proportional with the total amount of energy storage electronics in the solid.Here it is, and light is released the theoretical foundation that optical tech is applied to geology mineral sample survey year.
The mineral samplers dating require dating instrument volume little, in light weight, be easy to carry; And mostly existing dating instrument is external product, costs an arm and a leg complicated operation; Bulky; Can't satisfy its requirement, excitation source is as the critical piece of dating appearance, want equally cube little, in light weight, be easy to carry.The excitation source of prior art (breaks down as changing diode color or diode) when changing light emitting diode, need the dating appearance be taken apart and carry out, and influences the work efficiency of geologic dating, therefore needs a kind of replaceable excitation light source device.Publication number is that the Chinese invention patent application of CN1921155A discloses a kind of " light source exciting device for light-emitting diode ", and this device mainly is directly to be fixed in the housing by the LED light emitting diode, optical filter and the transmissive mirror that connect along optical axis successively.This device is little by means of LED light-emitting diodes pipe volume, driving voltage is low, reaction velocity is fast and the low advantage of generating heat, and is used for the light source of fluorospectrophotometer or fluorescence detector.But, the inapplicable excitation source of this excitation light source device as the dating appearance, and do not have replaceable characteristics.
Summary of the invention
The purpose of the utility model provides a kind of replaceable excitation light source device of the ARM of having control system; Make that it has the light intensity height, heating is low, volume is little, in light weight, cost is low, be easy to the characteristics controlling and change, is applicable to that geological sample light releases light-year for analyzer.
The geological sample dating appearance that the utility model provides is used excitation light source device, mainly is made up of base, cover plate and light source module, and cover plate and light source control plate are fixed on the base through gib screw.Excitation light source device also is provided with the ARM machine.The ARM machine is fixed on the excitation light source device through gib screw, and the ARM machine is connected with the light source control plate through connecting line, and the light source control plate is connected with light source module through the light source control line.Cover plate is provided with the detection optical filter, and base is provided with guide rail, sample heat shield and light source cavity, and the sample heat shield is positioned at the lower end of light source cavity.Be provided with the module draw-in groove in the light source cavity, light source module is installed on the module draw-in groove.Light source module is made up of module cage and exciter filter, light emitting diode is housed in the module cage and detects phototriode, and adopt fixed head to fix light emitting diode and phototriode.Excitation light source device is replaceable structure.
The ARM machine mainly amplifies Shaping Module by ARM mainboard, photomultiplier control module, pulse and liquid crystal display is formed.Carry out the control signal transmission through the liquid crystal display connecting line between ARM mainboard and the liquid crystal display.The ARM mainboard controls respectively photomultiplier and light source module through photomultiplier control module and light source control plate.The electric impulse signal that the shaping pulse module is exported photomultiplier is imported the ARM mainboard after amplifying shaping, and light source module feeds back to the ARM mainboard through phototriode with the excitation source light intensity signal.The ARM machine is provided with turning axle, can change into horizontality through turning axle ARM machine, and the integral body of being convenient to light supply apparatus moves and replaces.
The version that the light source cavity adopts is inverted square frustum structure or circular frustum structure.When the light source cavity adopted square frustum structure, the frustum inclined-plane of light source cavity and the angle of base plane were 30～60 °, and the module draw-in groove is located on the inclined-plane of frustum.Excitation light source device is provided with 2～8 light source modules, and each light source module is provided with 5～20 light emitting diodes and 1～2 phototriode.The light intensity of excitation light source device is: apart from excitation source 30mm place light intensity is 50～70mW/cm
2Excitation light source device is provided with handle, and handle is positioned at a side of cover plate.Survey between optical filter and the cover plate, between sample heat shield and the base and be provided with packing washer between cover plate and the base, base is provided with dead slot.
Compared with prior art, the utility model has the advantages that: compact conformation, volume be little, in light weight, be convenient to install, change and carry.The light intensity of excitation source is high, is reaching 50～70mW/cm2 apart from excitation source 30mm place light intensity.Survey between optical filter and the cover plate, between sample heat shield and the base and packing washer is set, good airproof performance between cover plate and the base.Adopt integral module formula structure, be easy to change the light emitting diode of different colours.Excitation light source device has the ARM machine; Through the operation of liquid crystal display being accomplished switch control to light source module and photomultiplier; The reception of the electric impulse signal that photomultiplier is passed back, counting are released the demonstration of light curve, test data and are released functions such as light data storage.The utility model is simple to operate, and automaticity is high, and determination data is accurate.The ARM machine is provided with turning axle, can be turned into horizontality through turning axle, and the integral body of being convenient to light supply apparatus moves and replaces.
Description of drawings
Fig. 1 is the general structure synoptic diagram of the utility model geological sample dating appearance with excitation light source device;
Fig. 2 is the covering plate structure synoptic diagram;
Fig. 3 is the cover plate backplan;
Fig. 4 is the understructure synoptic diagram;
Fig. 5 is a base vertical view;
Fig. 6 is a light source module inner structure synoptic diagram;
Fig. 7 is the light source module side view;
Fig. 8 is an ARM machine turning axle synoptic diagram;
Fig. 9 is dating appearance one-piece construction figure;
Figure 10 is a dating appearance principle of work block diagram.
Wherein: 1-packing washer; 2-cover plate; 3-light source module; 4-detection optical filter; 5-light source control line; 6-gib screw; 7-handle; 8-ARM machine; 9-light source control plate; 10-exciter filter; 11-sample heat shield; 12-light source cavity; 13-base; 14-dead slot; 15-guide rail; 16-module draw-in groove; 17-light emitting diode; 18-module cage; 19-fixed head; 20-module case lid; 21-phototriode; 22-turning axle; 23-liquid crystal display; 24-photomultiplier; 25-mineral samplers; 26-light pulse signal; 27-electric impulse signal; 28-photomultiplier control signal; Shaping Module is amplified in 29-pulse; 30-counting pulse signal; 31-liquid crystal display return signal; 32-liquid crystal display control signal; 33-ARM mainboard; The little current controling signal of 34-photomultiplier; 35-photomultiplier control module; The little current controling signal of 36-light source; 37-phototriode feedback signal; 38-light source control signal.
Embodiment
Below in conjunction with accompanying drawing the utility model is done further explanation.
The utility model geological sample dating appearance is as shown in Figure 1 with excitation light source device, is made up of base 13, light source control plate 9, cover plate 2, light source module 3 and ARM machine 8.One side of cover plate 2 is provided with handle 7, and the integral body that is used for excitation light source device moves.Cover plate 2 usefulness gib screws 6 are fixed on the base 13, are provided with packing washer 1 between cover plate 2 and the base 13.ARM machine 8 is fixed on the excitation light source device with gib screw 6 in the side, and is as shown in Figure 8, and the ARM machine is provided with turning axle 22, and through turning axle 22, ARM machine 8 can overturn, and when it is turned into horizontality, can carry out moving and displacement of light supply apparatus smoothly.Light source control plate 9 is connected with light source module 3 through light source control line 5, and through light source control signal 38 it is controlled.
Like Fig. 2, shown in Figure 3; The centre of cover plate 2 is embedded with surveys optical filter 4; Survey between optical filter 4 and the cover plate 2 and be provided with packing washer 1, the material of surveying optical filter 4 is an optical glass, and its model is corresponding with concrete excitation source spectrum; Exciter filter 10 and the cooperation of surveying optical filter 4 through light source module 3 inside can improve the degree of accuracy of dating.
Like Fig. 4, shown in Figure 5, base 13 is provided with guide rail 15, sample heat shield 11 and light source cavity 12.The material of sample heat shield 11 is an optical glass, is positioned at the lower end of light source cavity 12, is provided with packing washer 1 between sample heat shield 11 and the base 13.The integral body that guide rail 15 is used for the modular excitation light source device moves.Light source cavity 12 is inverted square frustum structure, and angle is 45 ° between frustum inclined-plane and base.4 inclined-planes of frustum are provided with module draw-in groove 16, and light source module 3 is installed on the module draw-in groove 16.
Like Fig. 6, shown in Figure 7, light source module 3 is made up of module cage 18 and exciter filter 10, and 17,1 phototriode 21 of 9 light emitting diodes and fixed head 19 are housed in each module cage 18, with fixed head 19 fixedly light emitting diode 17 and phototriode 21.Light emitting diode 17 selectable spectral ranges are divided into 3 kinds: blue light, green glow and infrared, it is the blue light diode of 470nm that this instance adopts centre wavelength.Module case lid 20 is positioned at an end of module cage 18, is used for seal modules case 18.The light intensity of excitation light source device is: apart from excitation source 30mm place light intensity is 56mW/cm
2Have two dead slots 14 on the base 13, be used to alleviate the overall weight of excitation light source device.
As shown in Figure 9; Dating appearance top is provided with photomultiplier 24; Photomultiplier 24 be positioned at excitation light source device directly over; Mineral samplers 25 be positioned at photomultiplier 24 under projection centre, ARM machine 8 is fixed on the replaceable light supply apparatus, the illumination of light source module 3 is centered close on the mineral samplers 25.
Geologic dating appearance principle of work is shown in figure 10; At first send the little current controling signal 34 of photomultiplier, photomultiplier 24 is started working, after half an hour through liquid crystal display 23; Send the little current controling signal 36 of light source; Excitation source module 3 is started working, and excitation light irradiation inspires from it and releases light light pulse signal 26 to mineral samplers 25.This pulse signal arrives photomultiplier 24 test surfaces, through the conversion and the multistage multiplication of photomultiplier 24 inside, output electric pulse signal 27.This pulse signal is input to pulse amplification Shaping Module 29 and amplifies shaping, and count and further data processing square counting pulse signal 30 input ARM mainboards 33 inside of formation.
Introduce the function of various piece control module below.
Light source control plate 9 comprises two parts: light source control and light source power supply Control of Voltage.The little current controling signal 36 of light source that at first the analyzer control system is sent adopts triode to amplify, and controls the supply voltage of excitation source through triode state under the different control signals, and then controls the duty of excitation source module 3.Phototriode feedback signal 37 is used to monitor the light intensity of excitation source, converts digital signal into through the AD converting system, is input in the ARM machine 8, on liquid crystal display 23, shows at last, is convenient to the supply voltage of manual adjustments excitation source in case of necessity.
ARM machine 8 comprises ARM mainboard 33, photomultiplier control module 35, pulse amplification Shaping Module 29 and liquid crystal display 23.ARM mainboard 33 is controlled the duty of photomultiplier 24 and light source module 3 respectively through photomultiplier control module 35 and light source control plate 9.After amplifying shaping, the electric impulse signal 27 that pulse amplification Shaping Module 29 is exported photomultiplier 24 imports ARM mainboard 33.Light source module 3 feeds back to ARM mainboard 33 through phototriode 21 with the light intensity signal of light source module 3.Carry out signal transmission and feedback through the liquid crystal display connecting line between ARM mainboard 33 and the liquid crystal display 23.Through can accomplishing the switch control to light source module 3 and photomultiplier 24 to the operation of liquid crystal display 23, the reception of counting pulse signal 30, counting are released the demonstration of light curve, test data and are released function such as light data storage.
Introduce the function of each module below respectively.
1. the ARM mainboard 33.ARM mainboard 33 is made up of central processing unit, data storage cell and data acquisition unit, adopts the operating system based on Windows CE.Its central processing unit is the little process chip of the high integration of SAMSUNG company, and model is S3C2410AL-20, frequency of operation 203MHz.Its data storage cell is two sdram memorys, and model is HY57V561620BT-H; A slice NandFlash storage chip, model are U-K9F1208UDM-YC80; A slice Nor Flash memory chip, model are 29VL800; The SD card that capacity is 1G; External 2 USB interfaces.Its data acquisition unit adopts a slice programmable chip, and model is EPM7128, and the maximum 100MHz of its frequency of operation is used for realizing the duty that HSDA and gating pulse are amplified Shaping Module 29, photomultiplier control module 35 and excitation source 3.
2. the photomultiplier control module 35.The little current controling signal 34 of photomultiplier that the photomultiplier control module sends ARM mainboard 33; Adopt triode to amplify; And control the supply voltage of photomultiplier 24, and then the duty of control photomultiplier 24 through triode duty under the different control signals.
3. Shaping Module 29 is amplified in pulse.The light light pulse signal 26 of releasing that photomultiplier 24 will receive is converted into electric impulse signal 27 through multistage multiplication; And import pulse into and amplify Shaping Module 29; Pulse is amplified Shaping Module 29 and is at first adopted the two-stage transistor amplifier that electric impulse signal 27 is amplified; Adopt comparer MAX913 that it is carried out shaping then, background signal is removed, then the counting pulse signal 30 that forms is failed back ARM mainboard 33.
4. liquid crystal display 23.Liquid crystal display is provided with that light releases that the light initial parameter is provided with, the switch control of photomultiplier 24 and excitation source 3, releases the functions such as real-time demonstration and data storage of light curve and test data.
It is replaceable type structure that the utility model mineral samplers dating appearance uses excitation light source device; When light emitting diode 17 breaks down the light emitting diode 17 that maybe need change different colours or phototriode 21; Can ARM machine 8 be turn to horizontality through the turning axle 22 of ARM machine, pull out excitation light source device through handle 7, after changing; New excitation light source device is pushed the dating appearance, and ARM machine 8 turn to plumbness again.
Claims (10)
1. a geological sample dating appearance is used excitation light source device; Mainly constitute by base (13), cover plate (2), light source control plate (9) and light source module (3); Cover plate (2) and light source control plate (9) are fixed on the base (13) through gib screw (6); It is characterized in that: said excitation light source device also is provided with ARM machine (8); ARM machine (8) is fixed on the excitation light source device through gib screw (6), and ARM machine (8) is connected with light source control plate (9) through connecting line, and light source control plate (9) is connected with light source module (3) through light source control line (5); Said cover plate (2) is provided with surveys optical filter (4), and said base (13) is provided with guide rail (15), sample heat shield (11) and light source cavity (12), and sample heat shield (11) is positioned at the lower end of light source cavity (12); Be provided with module draw-in groove (16) in the light source cavity (12), light source module (3) is installed on the module draw-in groove (16); Said light source module (3) is made up of module cage (18) and exciter filter (10); Light emitting diode (17) is housed in the module cage (18) and detects phototriode (21), with fixed head (19) fixedly light emitting diode (17) and phototriode (21); Said excitation light source device is replaceable structure.
2. use excitation light source device according to the said geological sample dating of claim 1 appearance, it is characterized in that: said ARM machine (8) mainly amplifies Shaping Module (29) by ARM mainboard (33), photomultiplier control module (35), pulse and liquid crystal display (23) is formed; Carry out the control signal transmission through the liquid crystal display connecting line between ARM mainboard (33) and the liquid crystal display (23); Said ARM mainboard (33) controls respectively photomultiplier (24) and light source module (3) through photomultiplier control module (35) and light source control plate (9); The electric impulse signal (27) that pulse amplification Shaping Module (29) is exported photomultiplier (24) is imported ARM mainboard (33) after amplifying shaping, and light source module (3) feeds back to ARM mainboard (33) through phototriode (21) with the excitation source light intensity signal.
3. use excitation light source device according to the said geological sample dating of claim 2 appearance, it is characterized in that: said ARM machine (8) is provided with turning axle (22), can be turned into horizontality through turning axle (22) ARM machine (8).
4. use excitation light source device according to the said geological sample dating of claim 1 appearance, it is characterized in that: the structure of said light source cavity (12) is inverted square frustum structure or circular frustum structure.
5. use excitation light source device according to the said geological sample dating of claim 4 appearance, it is characterized in that: the inclined-plane of said square frustum structure light source cavity (12) and the angle of base plane are 30～60 °, and module draw-in groove (16) is located on the inclined-plane of frustum.
6. use excitation light source device according to each said geological sample dating appearance of claim 1～5; It is characterized in that: said excitation light source device is provided with 2～8 light source modules (3), and each light source module (3) is provided with 5～20 light emitting diodes (17) and 1～2 phototriode (21).
7. use excitation light source device according to the said geological sample dating of claim 6 appearance, it is characterized in that: the light intensity of said excitation light source device is: apart from excitation source (3) 30mm place light intensity is 50～70mW/cm
2
8. use excitation light source device according to the said geological sample dating of claim 6 appearance, it is characterized in that: said excitation light source device is provided with handle (7), and said handle is positioned at a side of cover plate (2).
9. use excitation light source device according to the said geological sample dating of claim 6 appearance; It is characterized in that: survey between optical filter (4) and the cover plate (2) and be provided with packing washer (1); Be provided with packing washer (1) between sample heat shield (11) and the base (13), be provided with packing washer (1) between cover plate (2) and the base (13).
10. use excitation light source device according to the said geological sample dating of claim 6 appearance, it is characterized in that: said base (13) is provided with dead slot (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120359776 CN202256157U (en) | 2011-09-23 | 2011-09-23 | Light source exciting device for geological sample determination instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120359776 CN202256157U (en) | 2011-09-23 | 2011-09-23 | Light source exciting device for geological sample determination instrument |
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| Publication Number | Publication Date |
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| CN202256157U true CN202256157U (en) | 2012-05-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201120359776 Expired - Fee Related CN202256157U (en) | 2011-09-23 | 2011-09-23 | Light source exciting device for geological sample determination instrument |
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| CN (1) | CN202256157U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102401784A (en) * | 2011-09-23 | 2012-04-04 | 石家庄经济学院 | Light source excitation device for geological sample age determination instrument |
| CN104655593A (en) * | 2015-01-21 | 2015-05-27 | 中国科学院广州地球化学研究所 | Pulse-excitation-based optically stimulated luminescence measurement and control device |
-
2011
- 2011-09-23 CN CN 201120359776 patent/CN202256157U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102401784A (en) * | 2011-09-23 | 2012-04-04 | 石家庄经济学院 | Light source excitation device for geological sample age determination instrument |
| CN102401784B (en) * | 2011-09-23 | 2013-04-03 | 石家庄经济学院 | Light source excitation device for geological sample age determination instrument |
| CN104655593A (en) * | 2015-01-21 | 2015-05-27 | 中国科学院广州地球化学研究所 | Pulse-excitation-based optically stimulated luminescence measurement and control device |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120530 Termination date: 20130923 |