CN103234919A - Automatic mass collection method for soil spectrum, and special collection apparatus - Google Patents

Abstract

The invention discloses a batch automatic collection method of soil spectrum and its special collection device. The collection device includes a support platform, a sample rotating disk, a sample cup, a plane bearing, a stepping motor and an optical probe. The plane bearing is installed on the The middle part of the upper end of the support platform, the sample rotating disk is set on the plane bearing, the sample rotating disk is provided with several round holes along the peripheral edge, and the sample cup can be placed on the circular hole on the sample rotating disk. In the hole; the stepping motor is installed in the support platform, and is connected with the sample rotating disk through the central hole in the center of the sample rotating disk, and the optical probe is arranged on the sample rotating disk directly above the round hole. The whole device of the invention has simple design, low manufacturing cost, high automation degree of soil sample spectral collection, and is suitable for indoor batch soil sample spectral collection and analysis.

Description

Batch automatic collection method of soil spectrum and its special collection device

technical field

The invention relates to a batch automatic collection method of soil spectrum and a special collection device thereof, belonging to the field of agricultural information detection equipment.

Background technique

Modern agriculture requires that a corresponding fertilization plan be formulated according to the actual fertility of the farmland and the demand of the crops. Traditional soil nutrient physical and chemical testing techniques cannot meet the real-time testing requirements of a large number of soil samples. Objectively, it is necessary to develop technologies and testing equipment that can quickly test soil nutrient content on a large scale. In recent years, near-infrared spectroscopy has been gradually used in indoor or outdoor testing of soil nutrients due to its advantages of simple testing, no need for sample pretreatment, and no chemical pollution. At present, the collection of soil spectra must rely on manual detection of soil samples one by one. This method is more suitable for testing a small number of samples, but for large-scale soil nutrient surveys, it obviously has disadvantages such as low efficiency, long testing time, and high labor costs. Therefore, it is necessary to develop a device that can automatically collect soil spectra in batches.

Contents of the invention

In order to overcome the shortcomings of low efficiency, long test time, high labor cost and unsuitability for large-scale sample testing in the existing soil spectrum collection, the present invention provides a soil spectrum batch automatic collection method and a special collection device.

The technical scheme adopted in the present invention is:

1. A method for automatically collecting soil spectra in batches, characterized in that: the method comprises the following steps:

(1) Power-on reset: After the electrical components are powered on, run the computer program to control the rotation of the sample rotating disk, so that the round hole marked "S" moves under the optical probe, and the optical standard plate is placed on the "S" round hole, And make the light emitted by the optical probe converge in the middle of the optical standard plate. Running a computer program to obtain the emission spectrum of the optical standard plate;

(2) Place the sample cup: put the soil sample to be tested into the sample cup, and put the sample cup into the round hole of the sample rotating disk in turn;

(3) Collect soil sample spectrum: Run the computer program, send a step rotation command to the stepper motor controller, rotate the sample rotating disk for an angular distance of a circular hole, and after staying for 1 second, start to automatically collect soil sample spectrum, repeating many times Collect, get the average value as the spectral value of the soil sample;

(4) End operation: repeat (3) operation until all soil samples on the sample rotating disk complete spectrum collection, the optical probe is repositioned above the "S" round hole of the sample rotating disk, and the program prompts that the current round of acquisition operation is over;

After replacing the soil sample, repeat the above (1)-(4) to start the automatic spectrum collection of the new soil sample.

The special acquisition device of the batch automatic acquisition method of soil spectrum according to the present invention includes a support platform, a sample rotating disk, a sample cup, a plane bearing, a stepping motor and an optical probe, and is characterized in that: the plane bearing is installed on the support In the middle of the upper end of the platform, the sample rotating disk is arranged on the plane bearing, and several circular holes are arranged on the sample rotating disk along the peripheral edge, and the sample cups can be placed in the circular holes on the sample rotating disk ; the stepper motor is installed in the support platform, and is connected with the sample rotating disk through the central hole in the center of the sample rotating disk, and the optical probe is arranged on the circular sample rotating disk directly above the hole.

Further, the circular holes are evenly distributed on the peripheral edge of the sample rotating disk at equiangular distances.

Further, the plane bearing is composed of upper and lower support plates, and several balls are arranged between the upper and lower support plates.

Further, the optical probe is composed of a cylindrical optical fiber transmission head and a ring-pillar light-emitting head through screw connection, the cylindrical fiber-optic transmission head is composed of several optical fiber bundles, and the ring-pillar light-emitting head is composed of several light-emitting diodes.

The installation steps of the overall structure of the present invention are as follows:

(1) Installation of mechanical components: Install the stepper motor into the support platform, install the plane bearing on the middle of the upper end of the support platform, install the sample rotating disk on the plane bearing, and connect with the stepper motor shaft, and install and fix the optical probe 2cm directly above the round hole on the sample rotating disk.

(2) Electrical component connection: connect the stepper motor with the motor driver, connect the motor driver with the motor controller, connect the optical probe with the spectrometer through the receiving optical fiber, connect the light emitting head of the optical probe with the light source power supply through the power cable, and connect the The spectrometer is connected to the USB port of the computer, and the motor controller is connected to the RS232 port of the computer.

The beneficial effects of the present invention are reflected in that the design of the whole device is simple, the manufacturing cost is low, the soil sample spectral collection is highly automated, and it is suitable for indoor batch soil sample spectral collection and analysis.

Description of drawings

Figure 1 is a schematic diagram of the overall structure of the device of the present invention.

Fig. 2 is a schematic diagram of a sample rotating plate of the present invention.

Fig. 3 is a front view of the plane bearing of the present invention.

Fig. 4 is a top view of the plane bearing of the present invention.

Fig. 5 is a schematic diagram of the optical probe of the present invention.

In the figure: 1. Sample rotating disk; 2. Plane bearing; 3. Stepping motor; 4. Support platform; 5. Sample cup; 6. Optical standard plate; 7. Round hole; 8. Center hole on the sample rotating disk ;9, ball; 10, optical probe; 11, light source power supply; 12, spectrometer; 13, power connection line; 14, receiving optical fiber; 15, computer; 16, motor driver; 17, motor controller; 18, cylindrical fiber optic transmission head; 19, ring column light emitting head; 20, optical fiber bundle; 21, light emitting diode.

Detailed ways

Referring to Fig. 1 to Fig. 5, soil spectrum batch automatic collection method, described method comprises the following steps:

(1) Power-on reset: After the electrical components are powered on, run the computer program to control the rotation of the sample rotating disk 1, so that the round hole marked "S" moves to the optical probe 10, and the optical standard plate 6 is placed on the "S" circle. hole, and make the light emitted by the optical probe 10 converge in the middle of the optical standard plate 6 . Running a computer program to obtain the emission spectrum of the optical standard plate;

(2) Place the sample cup: put the soil sample to be tested into the sample cup 5, and put the sample cup 5 into the round hole 7 of the sample rotating disk 1 in turn;

(3) Collecting soil sample spectra: run the computer program, send a step rotation command to the stepping motor controller 17, rotate the sample rotating disk 1 by an angular distance of a circular hole, and after staying for 1 second, start to automatically collect soil sample spectra, repeat Collect multiple times, and take the average value as the spectral value of the soil sample;

(4) Finish the operation: Repeat (3) until all the soil samples on the sample carousel 1 complete the spectrum collection, the optical probe is repositioned above the "S" round hole of the sample carousel, and the program prompts that the current round of acquisition operation is over;

After replacing the soil sample, repeat the above (1)-(4) to start the automatic spectrum collection of the new soil sample.

The special acquisition device of the soil spectrum batch automatic acquisition method described in the present invention comprises a support platform 4, a sample rotating disk 1, a sample cup 5, a plane bearing 2, a stepping motor 3 and an optical probe 10, and the plane bearing 2 is installed on In the middle of the upper end of the support platform 4, the sample rotating disk 1 is arranged on the plane bearing 2, and several round holes 7 are arranged on the sample rotating disk 1 along the peripheral edge, and the sample cup 5 can be placed on the The circular hole 7 on the sample rotating disk 1; the stepper motor 3 is installed in the support platform 4, and is connected with the sample rotating disk 1 through the central hole 8 in the center of the sample rotating disk. , the optical probe 10 is arranged directly above the circular hole 7 on the sample rotating disk 1 .

Further, the circular holes 7 are evenly distributed on the peripheral edge of the sample rotating disk 1 at equiangular distances.

Further, the plane bearing 2 is composed of upper and lower supporting plates, and several balls 9 are arranged between the upper and lower supporting plates.

Further, the optical probe 10 is composed of a cylindrical optical fiber conducting head 18 and a ring column light-emitting head 19. diode 21.

The installation steps of the overall structure of the present invention are as follows:

(1) Installation of mechanical components: Install the stepper motor 3 into the support platform 4, install the plane bearing 2 on the middle of the upper end of the support platform 4, install the sample rotating disk 1 on the plane bearing 2, and connect it with the stepper motor 3 axis Connected, the optical probe 10 is installed and fixed on the sample rotating disk 1 directly above the round hole 7 at 2 cm.

(2) Electrical component connection: connect the stepper motor 3 to the motor driver 16, connect the motor driver 16 to the motor controller 17, connect the optical probe 10 to the spectrometer 12 through the receiving optical fiber 14, and connect the light-emitting head of the optical probe 10 to the power supply The connection line 13 is connected with the light source power supply 11 , the spectrometer 12 is connected with the USB port of the computer 15 , and the motor controller 17 is connected with the RS232 port of the computer 15 .

The content described in the embodiments of this specification is only an enumeration of the implementation forms of the inventive concept. The protection scope of the present invention should not be regarded as limited to the specific forms stated in the embodiments. Equivalent technical means that a person can think of based on the concept of the present invention.

Claims (5)

1. soil spectrum automatic acquiring method in batches is characterized in that: said method comprising the steps of:

(1) electrification reset: after electric component powers on, the operation computer program, control sample rotating disc rotates, and makes the circular hole of label " S " move on under the optic probe, the optical standard plate is positioned on " S " circular hole, and the light that optic probe is sent converges in the middle of the optical standard plate.The operation computer program obtains optical standard plate emission spectrum;

(2) place sample cup: with the soil sample to be measured sample cup of packing into, sample cup is put into successively the circular hole of sample rotating disc;

(3) gather soil sample spectrum: the operation computer program sends the stepping rotate instruction to controllor for step-by-step motor, with circular hole angular distance of sample rotating disc rotation, stop 1s after the time, soil sample spectrum is gathered in beginning automatically, repeats repeatedly to gather, and averages as the spectral value of this soil sample;

(4) end operation: repeat (3) operation, all soil samples are finished spectra collection on the sample rotating disc, and optic probe is repositioned at sample rotating disc " S " circular hole top, and program prompts epicycle acquisition operations finishes;

After the displacement soil sample, repeat above (1)-(4) and can begin the automatic spectrum collection of new soil sample.

2. the soil spectrum as claimed in claim 1 special-purpose harvester of automatic acquiring method in batches, comprise support platform, sample rotating disc, sample cup, surface bearing, stepper motor and optic probe, it is characterized in that: described surface bearing is installed in described support platform upper center, described sample rotating disc is located on the described surface bearing, described sample rotating disc upper edge circumferential edges is provided with several circular holes, and described sample cup can be placed in the circular hole on the described sample rotating disc; Described stepper motor is installed in described support platform inside, and with described sample rotating disc by being located at the centre hole axis connection at described sample rotating disc center, described optic probe be located at circular hole on the described sample rotating disc directly over.

3. special-purpose harvester as claimed in claim 2, it is characterized in that: angular distances such as described circular hole are uniformly distributed in the circumferential edges of described sample rotating disc.

4. special-purpose harvester as claimed in claim 2 is characterized in that: described surface bearing is made up of two blocks of supporting plates up and down, is provided with some balls between two blocks of supporting plates up and down.

5. special-purpose harvester as claimed in claim 2, it is characterized in that: described optic probe is made of by being threaded cylinder fiber optic conduction head and annulated column light head two parts, described cylinder fiber optic conduction head is made up of some fibre bundles, and described annulated column light head is made up of some light emitting diodes.

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