CN103471996A

CN103471996A - Multifunctional rapid soil nutrient detection device based on halogen lamp combined light source

Info

Publication number: CN103471996A
Application number: CN2013104289232A
Authority: CN
Inventors: 刘燕德; 熊松盛; 郝勇; 张光伟; 孙旭东
Original assignee: East China Jiaotong University
Current assignee: East China Jiaotong University
Priority date: 2013-09-20
Filing date: 2013-09-20
Publication date: 2013-12-25
Anticipated expiration: 2033-09-20
Also published as: CN103471996B

Abstract

The invention discloses a multifunctional rapid soil nutrient detection device based on a halogen lamp combined light source. The multifunctional rapid soil nutrient detection device is composed of three parts, namely a detection module, a microprocessor and a GPS (Global Position System) module, and relates to a power supply module, a voltage stabilization module, a sample module, a detection module, a display module, the GPS module, an internet access module, a processor module, a light source combination manner and a structural design. According to the soil nutrient detection device, the microprocessor adopts an embedded single-board computer which has a fast speed, a large internal storage, abundant interfaces and simple power supply. The detection module is powered from the microprocessor by adopting a USB (Universal Serial Bus) data line. The device is compact in structure, convenient to move and carry and good in stability; meanwhile, indexes of a plurality of soil nutrients (including nitrogen, phosphorus, potassium and organic matters) can be analyzed simultaneously, and the device also has a GPS function so as to conveniently read out global longitude and latitude coordinates to realize real-time positioning.

Description

Multifunction soil nutrient device for fast detecting based on the Halogen lamp LED combined light source

Technical field

The present invention relates to a kind of soil nutrient pick-up unit, relate in particular to a kind of multifunction soil nutrient device for fast detecting based on the Halogen lamp LED combined light source.

Background technology

Soil nutrient be by soil offer plant growth must nutrient, it is the important indicator of reflect soil fertility.The nutrient information of understanding in real time soil is one of foundation of Digital Agriculture, significant to instructing agricultural sciences to produce.Wherein, soil nutrient information mainly refers to nitrogen content, potassium content, phosphorus content, the content of organic matter, conductivity, humidity of soil etc.

Near infrared spectroscopy has, and the advantage such as easy, quick, low-cost and simultaneous determination of multiponents is subject to people's attention.In detection, the design of light source has a great impact tool as a result, and partial monopoly and product do not have special-purpose voltage stabilizing power supplying circuit, are subject to having a strong impact on of the factors such as voltage fluctuation, light source ages.In addition, the combination of light source and structural design impact are also very large, design unreasonable a lot of useless parasitic lights that easily detect, and accuracy of detection is difficult to guarantee.

At present, patent and the product of near infrared soil nutrient information proving installation both domestic and external, a lot of microprocessor MSP430 series that all is based on, the Single Chip Microcomputer (SCM) system of even lower level even, their crystal oscillator frequency is low, and arithmetic speed is slow, and data and program internal memory are little, be not suitable for the analysis in enormous quantities of spectroscopic data, be difficult to realize fast detecting soil nutrient information simultaneously.Also more single in function aspects, be difficult to analyze multiple soil nutrient simultaneously.And great majority all do not have positioning function, when the accurate operation of Digital Agriculture, also must be furnished with the GPS orientator, use inconvenience, be difficult to realize the real-time detection in field.

Summary of the invention

Unreasonable in order to overcome in technical background the device light source design, processor speed is slow, stored routine and data are few, test event is single and the problem that can not locate, the invention provides a kind of multiple soil nutrient with GPS device for fast detecting simultaneously, adopt the present invention can meet the requirement of accurate operation.

The present invention is achieved in that by detection module, computer module, GPS module and forms; It is characterized in that detection module connects computer module, computer module connects the GPS module.Described detection module comprises detection module cutting ferrule, light source arrangement structure, Halogen lamp LED, signal receiver and linear optical filter, the detection module cutting ferrule links together quartzy cup and detection module, the symmetria bilateralis of described light source arrangement structure connects two Halogen lamp LEDs, be connected with signal receiver under the light source arrangement structure, signal receiver connects linear optical filter, wherein: 2 Halogen lamp LEDs in detection module are arranged symmetrically with, become 30 ° ± 2 ° angles with vertical direction, the tapering of catoptrical cone-shaped inner hole is 8 °; Detection module adopts the USB power supply.Described computer module comprises power module, Voltage stabilizing module, on-line module, mainboard, display module; Described mainboard connects respectively on-line module, Voltage stabilizing module and display module, and Voltage stabilizing module connects power module; Wherein: mainboard adopts embedded board computer PCM9361, with the DDR2 internal memory of 1GB and 8G hard disk, 2 SATA interfaces, 2 RS232 interfaces, 3 USB 2.0 interfaces.Described GPS module is Garman GPS25LP;

Power module is comprised of 220V Alternating Current Power Supply and 12V lithium battery, is responsible for utilizing alternating current or accumulator to power to each parts of device, and lithium battery can pass through the 220V alternating current charging; Voltage stabilizing module is mainly to make supply voltage stable, guarantees that the microprocessor runnability is stable; Sample block is used quartzy cup sample with reduce disturbance; Comprise 2 Halogen lamp LEDs in detecting device and be arranged symmetrically with, become 30 ° (errors can in 2 ° of scopes) with vertical direction, the tapering of catoptrical cone-shaped inner hole is 8 °; Detection module adopts the USB power supply, can launch the continuous spectrum of 950-1650nm, 16 of analog to digital conversion, and minimum integration times 100 microsecond, resolution is 12.5nm, the efficiently sampling zone is 2x4mm; Display apparatus module adopts touch-screen can realize man-machine conversation; The GPS module adopts Garman GPS25LP; On-line module adopts wireless Internet card; Processor module adopts the embedded board computer, with DDR2 internal memory, 8G hard disk, 2 SATA interfaces, 2 RS232 interfaces, 3 USB 2.0 interfaces of 1GB; Display module adopts the touch screen displays of 8 inch 800*600 resolution.

The spectrum data gathering module realizes the collection of soil spectrum data; Data analysis module is realized spectroscopic data pre-service, modeling, prediction, last soil nutrient content information.

The present invention compares with technical background, and the beneficial effect had is:

(1) in detection module, 2 Halogen lamp LEDs are arranged symmetrically with, and become 30 ° (errors can in 2 ° of scopes) with vertical direction, and the tapering of catoptrical cone-shaped inner hole is 8 °, can avoid most parasitic light and other stray lights, guarantee the accuracy detected.

(2) different its microprocessor and the detection modules of being of this soil nutrient pick-up unit and similar product maximum, microprocessor adopts that embedded board computer speed is fast, internal memory large, rich interface, by 220V Alternating Current Power Supply or 12V lithium battery power supply.Detection module adopts the usb data line from microprocessor power supply and light stability.

(3) this soil nutrient structure of the detecting device compact, be convenient to move and carry, fast response time, memory capacity are large, good stability, can analyze a plurality of soil nutrient indexs simultaneously, and conveniently read global longitude and latitude coordinate with the GPS function and locate in real time.

The accompanying drawing explanation:

Fig. 1 is circuit connection diagram of the present invention;

Fig. 2 is 12V mu balanced circuit figure;

Fig. 3 is general structure schematic diagram of the present invention;

Fig. 4 is that the present invention fills sample annex partial view;

Fig. 5 is detection architecture light source arrangement structure;

Fig. 6 is course of work process flow diagram of the present invention.

Embodiment

Below in conjunction with accompanying drawing, concrete enforcement is described in further detail.

As Fig. 1, Fig. 4, shown in Fig. 5 and Fig. 6, the present invention includes quartzy cup (1), pedotheque (2), detection module (3), usb data line (4), radiator fan (5), negative line (6), electrode line (7), Voltage stabilizing module (8), negative line (9), electrode line (10), power module (11), GPS module (12), data line (13), on-line module (14), mainboard (15), data line one (16), display module (17), data line two (18), sample detection groove (19), power switch (20), cabinet (21), USB2.0 interface (22), USB2.0 interface (23), detection module cutting ferrule (24), light source arrangement structure (25), Halogen lamp LED (26), signal receiver (27) and linear optical filter (28), described mainboard mainboard (15) respectively passes through respectively data line (16), (18), (13), (4) the corresponding display module (17) that connects, on-line module (14), GPS module (12), detection module (3) and on-line module (14), described mainboard (15) is also just passing through, negative line (6), (7) connect Voltage stabilizing module, described Voltage stabilizing module (8) is just passing through, negative line (9), (10) connect power module (11), be connected with quartzy cup (1) on described detection module (3), be placed with pedotheque (2) in quartzy cup (1).

As shown in Figure 6, for realizing purpose, the workflow that the present invention adopts is as follows: power-on enters system; Open detection module; The soil sample pedotheque is put into to quartzy cup; Use detection module to gather spectroscopic data; Utilize software to carry out pre-service to data; Import nutrient model prediction soil nutrient content; Result is presented on screen; Use in case of necessity network to exchange with person skilled.

As shown in Figure 1, soil nutrient tester mainly is comprised of power module, Voltage stabilizing module, sample block, detection module, display module, GPS module, on-line module, processor module.Wherein: power module (11) is comprised of 220V Alternating Current Power Supply and 12V lithium battery, is responsible for utilizing alternating current or accumulator to power to each parts of device, and lithium battery can pass through the 220V alternating current charging; Power supply is mainly to supply with mainboard (15) and radiator fan (5) after Voltage stabilizing module (8); Sample block comprises quartzy cup (1) and pedotheque (2); The light source that detection module (3) sends is after the sample reflection and receive signal, then by USB line (4), delivers to and stores in mainboard (15) and analyze; GPS module (12) is connected with mainboard (15) by data line (13), reads geographical location information and preserves; On-line module (14) is connected with mainboard (15) by USB2.0 interface (22); Display module (17) is connected with mainboard (15) by data line (16), data line (18), realizes man-machine conversation.

As shown in Figure 2, be the circuit diagram of 12V mu balanced circuit.

As shown in Figure 3, be the cabinet schematic diagram of apparatus structure, a display screen (17) and a sample detection groove (19) are arranged above cabinet (21); There are power switch (20), USB interface (22) and USB interface (23) in the cabinet side.

As shown in Figure 4, be the detailed structure view that detects groove, have detection groove (19) on cabinet (21) the quartzy cup (1) of pedotheque (2) is housed for placement; Detection module cutting ferrule (24) connects mutually with cabinet (21), and detection module (3) is fixed by cutting ferrule.

As shown in Figure 5, be detection architecture light source arrangement structure.Halogen lamp LED (26) sends light source, after light source arrangement structure (25) is passed through in the reflection of sample block, by signal receiver (27), is received, and then by linear optical filter (28), then shifting circuit is processed.

Claims

1. the multifunction soil nutrient device for fast detecting based on the Halogen lamp LED combined light source, be comprised of detection module, computer module, GPS module; It is characterized in that detection module connects computer module, computer module connects the GPS module.

2. require the 1 described multifunction soil nutrient device for fast detecting based on the Halogen lamp LED combined light source according to patent, it is characterized in that described detection module comprises detection module cutting ferrule (24), light source arrangement structure (25), Halogen lamp LED (26), signal receiver (27) and linear optical filter (28), detection module cutting ferrule (24) links together quartzy cup (1) and detection module (3), the symmetria bilateralis of described light source arrangement structure (25) connects two Halogen lamp LEDs (26), be connected with signal receiver (27) under light source arrangement structure (25), signal receiver (27) connects linear optical filter (28), wherein: 2 Halogen lamp LEDs in detection module are arranged symmetrically with, become 30 ° ± 2 ° angles with vertical direction, the tapering of catoptrical cone-shaped inner hole is 8 °, detection module (3) adopts the USB power supply.

3. require the 1 described multifunction soil nutrient device for fast detecting based on the Halogen lamp LED combined light source according to patent, it is characterized in that: described computer module comprises power module (11), Voltage stabilizing module (8), on-line module (14), mainboard (15), display module (17); Described mainboard (15) connects respectively on-line module (14), Voltage stabilizing module (8) and display module (17), and Voltage stabilizing module (8) connects power module (11); Wherein: mainboard (15) adopts embedded board computer PCM9361, with the DDR2 internal memory of 1GB and 8G hard disk, 2 SATA interfaces, 2 RS232 interfaces, 3 USB 2.0 interfaces.

4. according to patent, require 1 describedly according to patent, to require the 1 described multifunction soil nutrient device for fast detecting based on the Halogen lamp LED combined light source, it is characterized in that, described GPS module (20) is Garman GPS25LP.