CN203432909U - Multi-probe fluorescent sensing device - Google Patents
Multi-probe fluorescent sensing device Download PDFInfo
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- CN203432909U CN203432909U CN201320389588.5U CN201320389588U CN203432909U CN 203432909 U CN203432909 U CN 203432909U CN 201320389588 U CN201320389588 U CN 201320389588U CN 203432909 U CN203432909 U CN 203432909U
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- sensing chip
- fluorescent sensing
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Abstract
The utility model relates to a multi-probe fluorescent sensing device. The multi-probe fluorescent sensing device comprises a first photoelectric detector, a first fluorescent sensing sheet, a second photoelectric detector, a second fluorescent sensing sheet, an LED (Light Emitting Diode) light source and a light source isolation plate, wherein the LED light source is a wideband light source with a certain divergence angle; the light source isolation plate is used for isolating a light beam emitted by the LED light source into a first detection zone and a second detection zone which are equal in interval or unequal in intervals; the first photoelectric detector and the first fluorescent sensing sheet are placed in the first detection zone; the second photoelectric detector and the second fluorescent sensing sheet are placed in the second detection zone; fluorescent sensing signals generated in the first detection zone and the second detection zone can not influence each other. The multi-probe fluorescent sensing device has an innovation point that an LED light source with a certain divergence angle is divided into two optical radiation zones which are respectively served as light sources for the two fluorescent sensing sheets, so that two-point or multi-parameter fluorescent sensing and detection are performed by a single light source.
Description
Technical field
The invention belongs to photoelectric sensing field, particularly a kind of different material that utilizes is realized the many probes fluorescence sensing device to the physics of material or chemical property detection to the effect that affects of fluorescence spectrum.
Background technology
Fluorescence method sensing principle is connecting together with the molecule that can identify some detected parameters the fluorescence inductive material that is formed for sensing by chemical method by fluorescigenic molecule.Conventionally fluorescence inductive material is coated on a transparent material, with a light source with certain bandwidth, through transparent material deexcitation fluorescence inductive material, make it produce certain fluorescence, when detected material is present in detected sample, by detected material and identification interaction of molecules, cause cancellation or the enhancing of fluorescence.Fluorescence intensity is just relevant with the concentration of measured matter.By measuring fluorescence intensity, just can calculate the content of measured matter.Due to the development of modern optical fiber technology, the loss of the transmission of light in optical fiber is reduced greatly, therefore, adopt optical fiber to come transmission sensing light signal can realize remote sensing detection.The advantages such as in addition, optical fiber also has volume little, lightweight, and light signal is not subject to electromagnetic interference (EMI), corrosion-resistant and high temperature, therefore, are specially adapted to the sensing detection in crawl space and rugged surroundings.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, provide a kind of simple in structure, size is little, and cost is low, can utilize single light source is isolated into a plurality of intervals excites respectively different fluorescent materials, thereby realize the detection to a plurality of sensing points or many kinds of substance with single light source.
The utility model solves its technical matters and realizes by the following technical solutions:
A probe fluorescence sensing device, comprises the first photodetector, the first fluorescence sensing chip, the second photodetector, the second fluorescence sensing chip, LED light source and light source division board, and described LED light source is a kind of light source with certain angle of divergence; The light beam that described light source division board sends described LED light source is isolated into two uniformly-spaced or the first detection interval of unequal interval and the second detection interval; Described the first photodetector and the first fluorescence sensing chip are positioned in the first detection interval; Described the second photodetector and the second fluorescence sensing chip are positioned in the second detection interval, and the fluorescence induced signal producing in the first detection interval and the second detection interval does not produce and influences each other,
And described the first fluorescence sensing chip and the second fluorescence sensing chip can adopt identical excitation source.
And described the first fluorescence sensing chip and described the first photodetector have identical spectral range, the second fluorescence sensing chip and described the second photodetector have identical spectral range.
And described light source division board is a kind of to described LED light source and the opaque material of fluorescence to described the first fluorescence sensing chip and the generation of the second fluorescence sensing chip, and this opaque material is a kind of very thin thickness flaky material.
Advantage of the present invention and beneficial effect are:
1. the fluorescence sensing device of probe, is isolated into two or more intervals with the opaque sheeting of a slice by LED light source and excites respectively different fluorescent materials, thus realization detection to a plurality of sensing points or many kinds of substance with single light source.
2. the fluorescence sensing device of probe, simple for structure, size is little, reasonable in design, and energy consumption is little, and cost is low.
Accompanying drawing explanation
Fig. 1 is front view of the present invention;
Fig. 2 is the vertical view of Fig. 1;
Fig. 3 is the left view of Fig. 1.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail, following examples are descriptive, are not determinate, can not limit protection domain of the present utility model with this.
As shown in Figure 1, the present invention includes the first photodetector 6, the first fluorescence sensing chip 2, the second photodetector 16, the second fluorescence sensing chip 12, LED light source 10 and light source division board 8, LED light source 8 is a kind of light sources with certain angle of divergence θ, and light distribution in this spread angle range is evenly approximate, by light source division board 8, be isolated into that two of left and right equate or interval not etc., the first photodetector 6 and the first fluorescence sensing chip 2 are positioned at the left side of light source division board 8, the light 4 in LED light source 10 left sides is irradiated on the first fluorescence sensing chip 2, the fluorescence of its generation is a kind of scattered light, a part of scattered light is wherein received by the first photodetector 6, the second photodetector 16 and the second fluorescence sensing chip 12 are positioned at the right side of light source division board 8, the fluorescence of its generation is a kind of scattered light, a part of scattered light is wherein received by the second photodetector 16, the fluorescence intensity detecting by the first photodetector 6 and fluorescence and the second photodetector 16 can detect concentration or other physics or the chemical characteristic that acts on the material on the first fluorescence sensing chip 2 and the second fluorescence sensing chip 12, if what the first fluorescence sensing chip 2 and the second fluorescence sensing chip 12 adopted is different materials, the utility model device can be realized with single excitation source and realize the detection to the physics of two kinds of different materials or chemical property.Same principle, can adopt a plurality of light source division boards that LED light source 10 is isolated into plural interval, realizes with single excitation source and realizes the Multi-point detection to the detection of the physics of two or more different materials or chemical property or same material.It is pointed out that light source division board 8 not only needs only opaque to LED light source 10, but also the fluorescence that need send the first fluorescence sensing chip 2 and the second fluorescence sensing chip 12 is also opaque, to prevent influencing each other between two transducing signals.
Fig. 2 is the vertical view of Fig. 1, the left view that Fig. 3 is Fig. 1.
Innovation of the present invention is: with the opaque sheeting of a slice, LED light source is isolated into two or more intervals and excites respectively different fluorescent materials, thereby realize the detection to a plurality of sensing points or many kinds of substance, and simple for structure, size is little, reasonable in design, energy consumption is little, and cost is low, particularly, for the sensing detection of portable many materials or many reference amounts, there is larger advantage.
Claims (4)
1. the fluorescence sensing device of probe more than, comprises the first photodetector, the first fluorescence sensing chip, the second photodetector, the second fluorescence sensing chip, LED light source and light source division board, and described LED light source is a kind of light source with certain angle of divergence; The light beam that described light source division board sends described LED light source is isolated into two uniformly-spaced or the first detection interval of unequal interval and the second detection interval; Described the first photodetector and the first fluorescence sensing chip are positioned in the first detection interval; Described the second photodetector and the second fluorescence sensing chip are positioned in the second detection interval, and the fluorescence induced signal producing in the first detection interval and the second detection interval does not produce and influences each other.
2. according to a kind of many probe fluorescence sensing devices described in right 1, it is characterized in that: the first fluorescence sensing chip and the second fluorescence sensing chip can adopt identical excitation source.
3. according to a kind of many probe fluorescence sensing devices described in right 1, it is characterized in that: described the first fluorescence sensing chip and described the first photodetector have identical spectral range, the second fluorescence sensing chip and described the second photodetector have identical spectral range.
4. according to a kind of many probe fluorescence sensing devices described in right 1, it is characterized in that: described light source division board is a kind of to described LED light source and the opaque sheeting of fluorescence to described the first fluorescence sensing chip and the generation of the second fluorescence sensing chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320389588.5U CN203432909U (en) | 2013-07-02 | 2013-07-02 | Multi-probe fluorescent sensing device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320389588.5U CN203432909U (en) | 2013-07-02 | 2013-07-02 | Multi-probe fluorescent sensing device |
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| CN203432909U true CN203432909U (en) | 2014-02-12 |
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| CN201320389588.5U Expired - Fee Related CN203432909U (en) | 2013-07-02 | 2013-07-02 | Multi-probe fluorescent sensing device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104122239A (en) * | 2013-04-28 | 2014-10-29 | 天津奇谱光电技术有限公司 | Multi-probe fluorescence sensing device |
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2013
- 2013-07-02 CN CN201320389588.5U patent/CN203432909U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104122239A (en) * | 2013-04-28 | 2014-10-29 | 天津奇谱光电技术有限公司 | Multi-probe fluorescence sensing device |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140212 Termination date: 20170702 |