Hand-hold China second-generation X fluorescence spectrophotometer
Technical field
The utility model relates to a kind of trace element detector device, especially a kind of X fluorescent energy dispersive spectrometer of hand-held, and simultaneously in the fast detecting sample, the multiple element from potassium (K) to uranium (U).The on-the-spot on-line detector device of this instrument for developing at the RoHS instruction of European Union specially, five kinds of elements that relate in the main measure R oHS instruction, six kinds of materials.
Background technology
Mainly there is following shortcoming in the X fluorescence spectrophotometer of Tui Chuing in the market:
1. excitaton source.The still employing that has falls behind, and has been subjected to the isotope radioactive source that control is give stricted orders by country.The isotope radioactive source is that whole day does not have not, can radiate radiation ray no matter whether test all, and operator and environment are had radiation pollution.In view of the reason of secure context, the isotope radioactive source has been subjected to the control of give stricting orders of national departments concerned, and the user is had many restrictive conditions and verification process.And high-voltage power supply and X-ray pipe excitaton source that this money instrument adopts are a kind of foolproof excitaton sources.When instrument is in non-test mode, will have X ray and produce.When test,, avoided the escape of X ray to greatest extent also by structural design.So be a kind of testing tool of environmental sound.
2. detector refrigeration mode.Aspect detector, the detector that still adopts the liquid nitrogen refrigerating technical support that falls behind that has.Adopt the X fluorescence spectrophotometer of liquid nitrogen refrigerating, except bulky, its nitrogen need regularly go to replenish owing to the cause that can not stop to volatilize, for the operator, and very loaded down with trivial details and trouble.And because on the refrigeration principle, often can not guarantee that with the detector of liquid nitrogen refrigerating detector works under the state of constant temperature, all measurement results also can instability.
3. detector.Equally aspect detector, what have still adopts relatively backward proportional counter tube, and this detector is because on the analysis principle, resolution is poor, measure micro-aspect, effect is poor.
4. apparatus structure.Instrument in the market mainly is desk-top, even vertical.Volume ratio is huger, can only use in indoor even laboratory, bothers very much aspect transportation, and exists the danger that data will be proofreaied and correct again.Meeting some big, as outcase of refrigerator, during automobile case etc., the use aspect is inconvenience quite.
5. can not switch optical filter.In the ROHS test, the sample of corresponding metallic matrix and plastic substrate is difficult to obtain correct measurement result; When making full elemental analysis, wider elemental range there are not good sensitivity and accuracy.
Summary of the invention
In order to overcome the shortcoming of above-mentioned X fluorescence spectrophotometer, order of the present utility model provides a kind of hand-hold China second-generation X fluorescence spectrophotometer, and this spectrometer has the unexistent premium properties of general X fluorescence spectrophotometer by the improvement to original structure.
The technical scheme that the utility model adopted is: a kind of hand-hold China second-generation X fluorescence spectrophotometer, comprise fuselage and the palm PC that is attached thereto, wherein, in the described fuselage light-source system is installed, detector system, signal Processing and MCA system, light-source system (comprising high pressure and light pipe) is launched X ray, after X ray acts on the sample, each atom in the sample can be inspired feature X fluorescence, these X fluorescence are detected device and receive, and analyze to be converted into electric signal, and electric signal is through the processing of MCA module, be transferred to again in the palm PC (PDA), on the user interface of software, show; Wherein, described fuselage be shaped as the rifle shape that is easy to carry about with one, described fuselage comprises left shell, trigger, right shell and base, wherein, detector, light source radiation system are fixed in body of a gun front portion in the right shell, and printed circuit board (PCB), signal processing system then are fixed in body of a gun middle part in the right shell, base is fixed in body of a gun afterbody in the right shell simultaneously, and the trigger stationkeeping has battery in the described right shell, is covered with a battery cover on this battery; Described light-source system comprises high-voltage power supply and X-ray pipe, and described X-ray pipe adopts integrated encapsulating structure, adds metal heat sink on the shell of described integrated encapsulating structure.
Because instrument in the market mainly is desk-top, even vertical.Volume ratio is huger, can only use in indoor even laboratory, bothers very much aspect transportation, and exists the danger that data will be proofreaied and correct again.Meeting some big, as outcase of refrigerator, during automobile case etc., the use aspect is inconvenience quite.And rifle shape structure Design makes that the utility model volume very little (size), weight only are about 1.2kg, and is easy to carry and transport, and the advantage when operation in the open air and measurement big article is incomparable.
Described metal heat sink comprises left radiating block and right radiating block.The installing additional of the integrated encapsulating structure of X-ray pipe and metal heat sink greatly reduces the temperature of X-ray plumber when doing, and helps prolonging the serviceable life of X-ray pipe.
Described spectrometer is provided with switching device of optical fiber.This installs changeable 2 groups of optical filters, and in the ROHS test, therefore the sample of these 2 groups of optical filters corresponding metallic matrixes of difference and plastic substrate all has correct measurement result; When making full elemental analysis, wider elemental range there are good sensitivity and accuracy.
Be mounted with a palm PC (PDA) on the shell of described spectrometer, be connected for wireless blue tooth between described PDA and the described spectrometer.Therefore in test process, the hand-holdable PDA of operating personnel observes and controls, and can arbitrarily move in certain distance, makes test process more flexible, and is more humane.
The front end of described spectrometer is provided with microswitch.This microswitch has guaranteed just can start the X-ray pipe when instrument is close to sample, and the output X ray makes instrument more secure to people's security.
Described spectrometer is provided with and detects a mouthful buffered silica gel spare support.
Described spectrometer can use 110/220 volt of AC power, also can use the 9VDC adapter, makes the power supply of instrument battery charge and continuous coverage.Increased the convenience of using, be used in combination selectable unit-fixed testing jig, can make the utility model also be used for indoor follow-on test, realized a machine double-purpose as desk-top instrument.
The beneficial effects of the utility model are: this instrument is pollution-free, safe excitaton source; Measure and stablize, consumptive material is few; The resolution height is measured accurately; Small volume and less weight is more suitable for site work, and the advantage when the test big article is particularly outstanding.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is an one-piece construction synoptic diagram of the present utility model.
Fig. 2 is the structural representation of right shell part of the utility model and PDA part.
Fig. 3 is the structural representation of trigger portion of the present utility model.
Fig. 4 is the structural representation of base portion of the present utility model.
Fig. 5 is mouthful structural representation of buffered silica gel spare holder part that detects of the present utility model.
1, palm PC; 2, left shell; 3, left radiating block; 4, printed circuit board (PCB); 5, detector; 6, detect a mouthful buffered silica gel spare support; 7, collimating apparatus; 8, high pressure light pipe; 9, right radiating block; 10, trigger; 11, battery cover; 12, battery, 13, right shell; 14, base; 31, switching device of optical fiber; 32, microswitch.
Embodiment
As Fig. 1, Fig. 2, Fig. 3, Fig. 4 and shown in Figure 5, a kind of hand-hold China second-generation X fluorescence spectrophotometer, comprise fuselage and the palm PC (1) that is attached thereto, wherein, in the described fuselage light-source system is installed, detector system, signal Processing and MCA system, light-source system (comprising high pressure and light pipe) is launched X ray, after X ray acted on the sample, each atom in the sample can be inspired feature X fluorescence, and these X fluorescence are detected device (5) and receive, analysis is converted into electric signal, electric signal is transferred in the palm PC (1) through the processing of MCA module again, shows on the user interface of software; Wherein, described fuselage be shaped as the rifle shape that is easy to carry about with one, described fuselage comprises left shell (2), trigger (10), right shell (13) and base (14), wherein, the collimating apparatus (7) of detector (5), light source radiation system and high pressure light pipe (8) are fixed in the interior body of a gun of right shell (13) front portion, printed circuit board (PCB) (4), signal processing system then are fixed in the interior body of a gun of right shell (13) middle part, base (14) is fixed in body of a gun afterbody in the right shell simultaneously, and, trigger (10) stationkeeping has battery (12) in the described right shell, is covered with a battery cover (11) on this battery; Described light-source system comprises high-voltage power supply and X-ray pipe, and described X-ray pipe adopts integrated encapsulating structure, adds metal heat sink on the shell of described integrated encapsulating structure, and described metal heat sink comprises left radiating block (3) and right radiating block (9).
On the one hand, instrument in the market mainly is desk-top, even vertical.Volume ratio is huger, can only use in indoor even laboratory, bothers very much aspect transportation, and exists the danger that data will be proofreaied and correct again.Meeting some big, as outcase of refrigerator, during automobile case etc., the use aspect is inconvenience quite.And rifle shape structure Design makes that the utility model volume very little (size), weight only are about 1.2kg, and is easy to carry and transport, and the advantage when operation in the open air and measurement big article is incomparable.
In addition, the installing additional of integrated encapsulating structure and metal heat sink greatly reduces the temperature of X-ray plumber when doing, and helps prolonging the serviceable life of X-ray pipe.
Described spectrometer is provided with switching device of optical fiber (31).This installs changeable 2 groups of optical filters, and in the ROHS test, therefore the sample of these 2 groups of optical filters corresponding metallic matrixes of difference and plastic substrate all has correct measurement result; When making full elemental analysis, wider elemental range there are good sensitivity and accuracy.
Be mounted with a palm PC (PDA) on the shell of described spectrometer, be connected for wireless blue tooth between described PDA and the described spectrometer.Therefore in test process, the hand-holdable PDA of operating personnel observes and controls, and can arbitrarily move in certain distance, makes test process more flexible, and is more humane.
The front end of described spectrometer is provided with microswitch (32).This microswitch has guaranteed just can start the X-ray pipe when instrument is close to sample, and the output X ray makes instrument more secure to people's security.
Described spectrometer is provided with and detects a mouthful buffered silica gel spare support (6).
Described spectrometer can use 110/220 volt of AC power, also can use the 9VDC adapter, makes the power supply of instrument battery charge and continuous coverage.Increased the convenience of using, be used in combination selectable unit-fixed testing jig, can make the utility model also be used for indoor follow-on test, realized a machine double-purpose as desk-top instrument.
The principle of work of software of the present utility model mainly comprises following five steps:
One, instrumental correction
Adjust the instrument enlargement factor, eliminate the influence that the peak floats, guarantee that testing sample is consistent with the mark sample condition.
Two, working curve
Composition per sample is different with base material, working curve is divided into five big classes: promptly survey the Cr in the plastics; Survey the Cr in the magnalium, Cd, Pb, Hg, Br surveys the Cd in the plastics, Pb, Hg, Br surveys the Cr in the metal, Cd, Pb, Hg, Br surveys in the scolding tin Pb etc.Each big class can be added many curves arbitrarily according to actual needs.
Three, intensity is calculated
Here adopt the method for peak back of the body ratio, peak area calculates with Gauss curve fitting.That is:
I
pBe the area at peak, I
bBe background area.
R: the left margin at peak
L: the right margin at peak
H: the height at peak.
X: Feng Dao location
X
0: the center trace location at peak
δ: the parameter relevant with the width at peak
Four, calculate content
Content by formula C=a*I+b calculates.
Coefficient a, b provides with least square method.
C
iBe the concentration of standard model i.
I
iBe the intensity of standard model i.
Five, report the result
Can be saved in needed file to the result who measures, and come out by printer prints.