CN202421071U

CN202421071U - Vehicle-mounted Raman spectrum soil detector

Info

Publication number: CN202421071U
Application number: CN2011205235043U
Authority: CN
Inventors: 汪六三; 鲁翠萍; 庄重; 汪玉冰; 陈鹏; 宋良图; 王儒敬
Original assignee: Hefei Institutes of Physical Science of CAS
Current assignee: Hefei Institutes of Physical Science of CAS
Priority date: 2011-12-14
Filing date: 2011-12-14
Publication date: 2012-09-05
Anticipated expiration: 2021-12-14

Abstract

The utility model discloses a vehicle-mounted Raman spectrum soil detector and relates to a soil nutrient real-time on-line detection technology. The vehicle-mounted Raman spectrum soil detector comprises a box, an aluminum plate arranged in the box and a notebook computer. The vehicle-mounted Raman spectrum soil detector is characterized in that a laser controller, a semiconductor laser device, a CCD (Charge Coupled Device) optical fiber spectrograph and a power supply for supplying power for a system are all mounted on the aluminum plate; the laser controller is connected with the semiconductor laser device, the semiconductor laser device is connected with an optical fiber Raman probe, the optical fiber Raman probe is connected with the CCD optical fiber spectrograph, and the laser controller is connected with the notebook computer through a cable. The vehicle-mounted Raman spectrum soil detector is compact in structure and suitable for analysis on soil constituents, especially, detection on phosphorus in the soil, and can work in both vehicle-mounted state and laboratory static state.

Description

Vehicle-mounted Raman spectrum soil detector

Technical field

The utility model relates to soil nutrient real-time online detection technique, is specifically related to a kind of vehicle-mounted Raman spectrum soil detector that phosphorus element content in the soil is detected.

Background technology

P elements is one of necessary nutrient of growth and development of plants, and its content directly influences growing way and crop and the quality of plant.Therefore be necessary to grasp the space distribution of P elements in the soil, technical parameter be provided for precisely applying fertilizer.Precisely fertilising not only can improve fertilizer utilization ratio, and can reduce the pollution to soil environment.The detection of P elements mainly is the laboratory measurement method in the tradition soil, like molybdenum antimony resistance colorimetric method, AAS.These measuring method complex operations, consuming time, effort, and can not realize that real-time online detects.Therefore be necessary to develop a kind of quick, real-time, easy detection method.The laser Raman spectroscopy technology is that laser technology and Raman technology are combined a kind of technology of producing, and it has fast, detection sensitivity is high, need not advantage such as sample preparation, has been widely used in fields such as material, oil, chemical industry, biology, environmental protection, geology.

The utility model content

To the on-line analysis present situation of P elements in the soil and the accurate needs of fertilising, the utility model technical matters to be solved has been to propose a kind of vehicle-mounted Raman spectrum soil detector that can realize P elements in real-time, online, the fast detecting soil.

The utility model technical matters to be solved adopts following technical scheme to realize:

A kind of vehicle-mounted Raman spectrum detector; The aluminium sheet, the notebook computer that comprise a casing, be located in the casing are formed; It is characterized in that: the power supply that laser controller, semiconductor laser, CCD fiber spectrometer is installed on the described aluminium sheet and supplies power for system; Described laser controller is connected with semiconductor laser; Described semiconductor laser is connected with the fiber Raman probe, and described fiber Raman probe is connected with the CCD fiber spectrometer, and described laser controller is connected with notebook computer through cable.

Described fiber Raman probe comprises the stainless steel case and is encapsulated in the corrosion resistant plate in the stainless steel case, is fixed with incident optical, pair of alignment lens, a pair of bandpass filter, a pair of condenser lens on the described corrosion resistant plate and collects optical fiber.

Described incident optical is a simple optical fiber, and the fibre turn that described collection optical fiber is made up of at least two optical fiber constitutes.

Described incident optical has a certain degree with collection optical fiber.

Described collection optical fiber is rare-earth doped optical fibre, and this type optical fiber can reduce the Raman signal that optical fiber self produces, and described collection optic fibre input end is that subcircular distributes, and output terminal is that near-linear is arranged.

Also be provided with two mini-fans on the described aluminium sheet.

The utility model is when work; The light beam of semiconductor laser output is coupled into the fiber Raman probe through coupling mechanism; Focus on sample through condenser lens; The Raman light that sample produces is collected by the fiber Raman probe, is coupled into the CCD fiber spectrometer through special optical fiber, and the signal of CCD fiber spectrometer output is analyzed demonstration through USB interface input notebook computer.

The beneficial effect of the utility model is: compare with conventional measurement, the utlity model has following advantage:

(1) test sample need not sample preparation and pre-service;

(2) sample almost there is not destruction;

(3) can vehicle-mounted work or quiescent operation;

(4) to real-time, quick, the online detection of P elements in the soil.

Description of drawings

Fig. 1 is the utility model structure principle chart;

Fig. 2 is the utility model fiber Raman sonde configuration schematic diagram;

Fig. 3 collects optic fibre input end distributed architecture figure for the utility model;

Fig. 4 collects fiber-optic output distributed architecture figure for the utility model;

Fig. 5 is the utility model example structure figure.

Embodiment

For technological means, creation characteristic that the utility model is realized, reach purpose and be easy to understand understanding with effect, below in conjunction with concrete diagram, further set forth the utility model.

As shown in Figure 1; A kind of vehicle-mounted Raman spectrum soil detector is made up of casing, aluminium sheet 1, the notebook computer 7 be located in the casing, the power supply that the CCD fiber spectrometer 5 of laser controller 2, semiconductor laser 3, TE refrigeration temperature control, two mini-fans 8 is installed on the aluminium sheet 1 and supplies power for system; Laser controller 2 is connected with semiconductor laser 3; Semiconductor laser 3 is connected with fiber Raman probe 4, and fiber Raman probe 4 is connected with CCD fiber spectrometer 5, and laser controller 2 passes through cable and is connected with notebook computer 7; Be provided with the program of having write cover laser instrument control and data analysis processing with G language (Labview) 7 li of notebook computers; Semiconductor laser 3 adopts the 12V lithium battery power supply, is used for the semiconductor laser 3 of the high stable performance of Raman spectrum, and live width is less than 0.2nm; Output power 500mW, optical power stability is less than 0.3% (p-p was above 8 hours).

As shown in Figure 2, fiber Raman probe 4 comprises the stainless steel case and is encapsulated in the corrosion resistant plate in the stainless steel case, is fixed with incident optical 46, pair of alignment lens 44, a pair of bandpass filter 43, a pair of condenser lens 42 on the corrosion resistant plate and collects optical fiber 41; Incident optical 46 is a simple optical fiber; The fibre turn that collection optical fiber 41 is made up of multifiber constitutes (the optical fiber radical is confirmed by the spectrometer that uses), and incident optical 46 has a certain degree with collection optical fiber 41, and collection optical fiber 41 is rare-earth doped optical fibre; This type optical fiber can reduce the Raman signal that optical fiber self produces; Like Fig. 3, shown in Figure 4, collecting optical fiber 41 input ends is that subcircular distributes, and output terminal is that near-linear is arranged; Bandpass filter 43 in the input path effectively filters parasitic light; 43 of high-pass filters in the emitting light path allow Raman light to get into spectrometer, and the stainless steel case is equipped with the sapphire window at the exit end of light beam, and laser beam and Raman light can pass through this window.

As shown in Figure 5, the utility model adopts vehicular colter 9 in use, and the sapphire window is arranged at colter 9 bottoms, and fiber Raman probe 4 can be fixed on the colter 9, and probe is over against colter 9 bottom windows, and laser beam incides in the soil through colter 9 bottom windows.

The light beam of semiconductor laser 3 outputs is through the incident optical 46 of Lens Coupling to fiber Raman probe 4; Behind collimation lens 44, bandpass filter 43, condenser lens 42; Focus on the sample 45; Sample 45 is excited the Raman light that produces behind collimation lens 44, high-pass filter 43, condenser lens 42, is collected optical fiber 41 and collects, is coupled into CCD fiber spectrometer 5, is input to notebook computer 7 by the USB interface communication and analyzes.

More than show and described ultimate principle of the utility model and the advantage of principal character and the utility model.The technician of the industry should understand; The utility model is not restricted to the described embodiments; The principle of describing in the foregoing description and the instructions that the utility model just is described; Under the prerequisite that does not break away from the utility model spirit and scope, the utility model also has various changes and modifications, and these variations and improvement all fall in the utility model scope that requires protection.The utility model requires protection domain to be defined by appending claims and equivalent thereof.

Claims

1. vehicle-mounted Raman spectrum soil detector; The aluminium sheet, the notebook computer that comprise a casing, be located in the casing are formed; It is characterized in that: the power supply that laser controller, semiconductor laser, CCD fiber spectrometer is installed on the described aluminium sheet and supplies power for system; Described laser controller is connected with semiconductor laser; Described semiconductor laser is connected with the fiber Raman probe, and described fiber Raman probe is connected with the CCD fiber spectrometer, and described laser controller is connected with notebook computer through cable.

2. vehicle-mounted Raman spectrum soil detector according to claim 1; It is characterized in that: described fiber Raman probe comprises the stainless steel case and is encapsulated in the corrosion resistant plate in the stainless steel case, is fixed with incident optical, pair of alignment lens, a pair of bandpass filter, a pair of condenser lens on the described corrosion resistant plate, collects optical fiber.

3. vehicle-mounted Raman spectrum soil detector according to claim 2, it is characterized in that: described incident optical is a simple optical fiber, the fibre turn that described collection optical fiber is made up of at least two optical fiber constitutes.

4. vehicle-mounted Raman spectrum soil detector according to claim 2 is characterized in that: described incident optical has a certain degree with collection optical fiber.

5. vehicle-mounted Raman spectrum soil detector according to claim 2, it is characterized in that: described collection optical fiber is rare-earth doped optical fibre, and described collection optic fibre input end is that subcircular distributes, and output terminal is that near-linear is arranged.