CN104251830A - Device and method for detecting splicing chicken - Google Patents

Abstract

The invention discloses a device and method for detecting splicing chicken. The invention adopts the incident light with changing light intensity to irradiate a sample; in the gradual increasing and decreasing process of the intensity of the incident light, absorption of different groups on light with corresponding wavelengths gradually increase or reduces; at this time the extent of absorption of groups is in the unsaturated, saturated and diminuendo processes, and the reflected light and transmitted light contain more information, so that the detected signal can accurately characterize whether the chicken is splicing chicken. The invention has the advantages of fast detection, multiple detection points, reliable detection data and high precision.

Description

Splicing chicken pick-up unit and detection method

Technical field

The present invention relates to measurement techniques for quality detection of meat detection technique field, especially relate to a kind of splicing chicken pick-up unit and the detection method that can detect splicing chicken accurately and rapidly.

Background technology

Chicken delicious flavour, nutritious, mouthfeel is good, is first-class food materials.But because its production cost is higher, especially high-grade chicken block, expensive.And splice chicken by the fragment chicken of different size and be spliced, not only mouthfeel is bad, and the chicken block of separate sources also can form pollution each other, forms food-safety problem.

At present, usually spectrum stimulus light source irradiation sample (namely adopting a Halogen lamp LED often opened or LED to impinge upon on sample) is adopted both at home and abroad, and gather incident illumination be mapped to sample after diffuse or through the transmitted light of sample, diffuse reflection spectrum or transmitted spectrum are analyzed, finally realizes the detection to sample quality; But it is less to there is the Detection Information amount collected in this detection method, the deficiency that the precision of detection is lower.At present, also not used for the effective ways that splicing chicken detects.

Chinese patent Authorization Notice No.: CN101769889A, authorized announcement date on July 7th, 2010, disclose the electric nasus system that a kind of quality of agricultural product detects, comprise one and mainly complete gas enrichment module to low concentration odor trap, one air chamber gas path module and the sensor array mainly olfactory signal being converted into electric signal, one mainly carries out filtering to sensor array output signal, analog to digital conversion, the Conditioning Circuits of Sensor of feature extraction and data preprocessing module, a pair signal carries out identifying and judging, and with the embedded system that data store, one display and result output module, described gas enrichment module is formed by being filled with the adsorption tube of adsorbent, heating wire and attemperating unit.This invention has function singleness, the deficiency that detection time is long.

Summary of the invention

The present invention is the deficiency in order to overcome the low and length consuming time of detection method precision of the prior art, provides a kind of splicing chicken pick-up unit and the detection method that can detect splicing chicken accurately and rapidly.

To achieve these goals, the present invention is by the following technical solutions:

A kind of splicing chicken pick-up unit, described pick-up unit comprises light tight housing, controller, keyboard, Halogen lamp LED, spectrometer, light intensity regulating device, be located in housing for sending incident light and receiving the fiber laser arrays head of reflected light, support and optical pickup apparatus; Described support comprises base plate, is positioned at the sample splint above base plate and is located at the L shape fixed arm on bottom edge, and sample splint is provided with sample putting hole, and the sample splint near sample putting hole is provided with several sample tucks;

Described L shape fixed arm comprise be positioned at leveling board above sample splint with through sample splint and the montant be fixedly connected with sample splint, the position be positioned at above sample putting hole of leveling board is provided with the vertical adjutage extended to sample putting hole, leveling board is provided with the first drive motor for driving vertical adjutage to horizontally rotate, and described vertical adjutage bottom is provided with the second drive motor for driving fiber laser arrays head to swing back and forth in vertical guide;

Described optical pickup apparatus comprises the support column coaxial with vertical adjutage be located on base plate, be located at the guide rail on support column and be located on guide rail for receiving the light-receiving head of incident light through the transmitted light after sample, described guide rail in and the arc-shaped being the center of circle with the swinging center of fiber laser arrays head; Be provided with the 3rd drive motor for driving support column to rotate in described base plate, light-receiving head is provided with the four-wheel drive motor for driving light-receiving head to run in guide rail;

Light intensity regulating device, Halogen lamp LED are connected successively with fiber laser arrays head, and light detection head and light-receiving head are electrically connected with spectrometer respectively, and controller is electrically connected with keyboard, spectrometer and each drive motor respectively.

Light intensity regulating device of the present invention is for the light intensity of the light source that regulates Halogen lamp LED to send, controller controls fiber laser arrays head by first, second drive motor and horizontally rotates and rotate on vertical guide, controller is horizontally rotated by the 3rd Electric Machine Control support column, catches transmitted light by the 4th Electric Machine Control light-receiving head; Thus the present invention can be detected the multiple points on sample, different incident angles is adopted to irradiate, and data analysis is carried out to the detection signal that each point of irradiation obtains, and judge whether chicken meat sample is splicing meat, that detects is wider, Detection Information more comprehensively, improves the reliability of testing result.

The principle of optical detection splicing chicken: the chicken lines of monoblock naturally continuously, orderliness is clear, color and luster is unified, water cut is close, and the absorption spectrum signal of sample to the incident light of same incident angle is close, can as the foundation detected.Although and the different fragments splicing meat pass through arrangement, gluing and surface treatment, its inherent meat lines is also discontinuous, have overall tomography, color and luster difference is comparatively large, and water cut is unanimously very difficult, therefore can determine whether as splicing chicken according to optical detecting method.

The present invention is that the incident light adopting light intensity constantly to change irradiates sample, in the intensity of incident light gradually in the large or change procedure that reduces, the absorption of different groups to respective wavelength light is gradually large or reduction, now the degree of absorption of group is in unsaturation, saturated diminuendo process, comprise more Detection Information in reflected light and transmitted light, thus whether enable the detection signal obtained symbolize chicken be more accurately splicing.

Therefore, it is fast that the present invention has detection speed, and check point is more, and the reliability and the precision that detect data are higher.

As preferably, described controller is STC89C52RC main control chip; Light intensity regulating device comprises function memory and power amplifier, described function memory is provided with the signal input interface for being electrically connected with controller, described function memory is electrically connected with the input end of power amplifier, and the output terminal of described power amplifier is connected with the power electric of Halogen lamp LED.

Testing staff is by keyboard phase control device input instruction, controller control function storer by prestore for controlling the wave form output of intensity variation to power amplifier, the output terminal of power amplifier is connected with the power electric of Halogen lamp LED, thus realize the adjustment to the light intensity of the light source that Halogen lamp LED sends by the power supply controlling Halogen lamp LED, and by the incident light of fiber laser arrays head to sample irradiation Strength Changes.

As preferably, described guide rail comprises guiding base plate, be located at guiding plate upper surface and along the arc of guiding base plate to two the spaced grooves extended, described groove floor is provided with the tooth bar arranged at equal intervals; Be provided with bottom described light-receiving head two with the gear of fit depressions; Described four-wheel drive motor is positioned at light-receiving head bottom, and the rotating shaft of four-wheel drive motor is connected with the coupling shaft be located between two gears.The vibrational power flow of guide rail makes light-receiving head can move back and forth in guide rail under the drive of four-wheel drive motor.

As preferably, described guiding base plate also comprises the first curved baffle and second curved baffle relative with the first curved baffle; First arc, the second curved baffle are provided with corresponding guide chute; The coupling shaft two ends of described gear are provided with the outrigger shaft of guide chute for inserting the first arc, the second curved baffle.The setting of the first curved baffle and the second curved baffle, when light-receiving head is moved, stability is better.

As preferably, described drive motor is stepper motor; Support column is connected with base plate by bearing, and vertical adjutage is connected with leveling board by bearing, and fiber laser arrays head is connected with vertical adjutage by bearing.

Splice a detection method for chicken pick-up unit, comprise the steps:

(6-1) from chicken to be detected, take out sheet meat as detected sample, controller is electrically connected with spectrometer and each motor, sample is kept flat on sample tuck;

(6-2) controller controls the second drive motor drive fiber laser arrays head and turns to default incident angle; The initial value of setting adjutage number of revolutions i is 1;

(6-3) computing machine drives adjutage to turn to angle 20 × i by the first drive motor, and makes the 3rd drive motor drive support column and adjutage synchronous axial system; Computing machine controls four-wheel drive driven by motor light-receiving head and moves on guide rail, and observe by spectrometer the light intensity that light-receiving head receives, computing machine be parked in guide rail by four-wheel drive Electric Machine Control light-receiving head with the position corresponding to the maximum of intensity of light;

(6-4) computing machine regulates fiber laser arrays head output detections light by light intensity regulating device, and described detection light rises to maximal value MAT from 0 according to sinusoidal curve, then drops to 0 from maximal value MAT according to cotangent curve; Spectrometer receives detection signal Spect (t) that the reflected light corresponding with detecting light and transmitted light sum are formed;

(6-5) as i < 18, make i value increase by 1, repeat step (6-3) to (6-4), obtain 18 detection signals Spect (t);

(6-6) computing machine all does following data processing to 18 detection signals Spect (t):

(6-6-1) detection signal Spect (t) is inputted one deck accidental resonance model in, wherein, V (x, t) is potential function, and x (t) is Brownian movement Particles Moving lopcus function, and a, b are the constant of setting, and ξ (t) is external noise, and D is external noise intensity, and N (t) grasps noise in being, for periodic sinusoidal signal, A is signal amplitude, and f is signal frequency, and t is run duration, for phase place, if

(6-6-2) computer calculate V (x, t) is for the first order derivative of x and second derivative, and makes equation equal 0, obtains two layers of accidental resonance model:

Setting noise intensity D=0, spect (t)=0, N (t)=0; The critical value calculating A is

(6-6-3) critical value of A is substituted in one deck accidental resonance model, and set X ₀(t)=0, sn ₀=0, with quadravalence jade for asking rain Ge Kuta Algorithm for Solving one deck accidental resonance model, obtain $x_{n+1}\left(t\right)=x_n\left(t\right)+1/6[{\left(k_1\right)}_n+(2-\sqrt{2}){\left(k_2\right)}_n+(2+\sqrt{2}){\left(k_3\right)}_n+{\left(k_4\right)}_n];$ And calculate ${\left(k_1\right)}_n=4({\mathrm{ax}}_{n-1}\left(t\right)-{\mathrm{bx}}_{n-1}^3\left(t\right)+{\mathrm{sn}}_{n-1}),$ ${\left(k_2\right)}_n=4[a(x_{n-1}\left(t\right)+\frac{{\left(k_1\right)}_{n-1}}{2})-b{(x_{n-1}\left(t\right)+\frac{{\left(k_1\right)}_{n-1}}{2})}^3+{\mathrm{sn}}_{n-1}],$ ${\left(k_3\right)}_n=4[a(x_{n-1}\left(t\right)+\frac{{\left(k_2\right)}_{n-1}}{2})-b{(x_{n-1}\left(t\right)+\frac{\sqrt{2}-1}{2}{\left(k_1\right)}_{n-1}+\frac{2-\sqrt{2}}{2}{\left(k_2\right)}_{n-1})}^3+{\mathrm{sn}}_{n+1}],$ ${\left(k_4\right)}_n=4[a(x_{n-1}\left(t\right)+{\left(k_3\right)}_{n-1})-b{(x_{n-1}\left(t\right)-\frac{\sqrt{2}}{2}{\left(k_2\right)}_{n-1}+\frac{2+\sqrt{2}}{2}{\left(k_3\right)}_{n-1})}^3+{\mathrm{sn}}_{n+1}];$

Wherein, x _nt n order derivative that () is x (t), sn _n-1the value of n-1 order derivative at t=0 place of S (t), sn _n+1the value of n+1 order derivative at t=0 place of S (t), n=0,1 ..., N-1; Obtain x ₁(t), x ₂(t) ..., x _n+1the value of (t);

(6-6-4) computing machine is to x ₁(t), x ₂(t) ..., x _n+1t () carries out integration, obtain x (t), and obtains x (t) produces accidental resonance moment position x in the double-deck stochastic system of one deck accidental resonance model and two layers of accidental resonance model composition _mvalue and x _mcorresponding resonance moment t ₁and and t ₁corresponding noise D ₁, D ₁for the value of in D;

(6-6-5)

Computing machine utilizes formula $\mathrm{SNR}=\sqrt{2}{\left(\mathrm{\&Delta;U}\frac{{4a}^3/27b}{D_1}\right)}^2{e}^{-{\left(\mathrm{\&Delta;U}\right)}^2/D_1}$ Calculate the signal to noise ratio (S/N ratio) that double-deck stochastic resonance system exports; Wherein, Δ U=a ²/ 4b; Obtain 18 output signal-to-noise ratio SNR ₁, SNR ₂..., SNR ₁₈;

(6-7) computing machine is by SNR ₉and SNR ₁₈form the 1st group of snr value, SNR ₁, SNR ₈, SNR ₁₀and SNR ₁₇form the 2nd group of snr value, SNR ₂, SNR ₇, SNR ₁₁and SNR ₁₆form the 3rd group of snr value, SNR ₃, SNR ₆, SNR ₁₂and SNR ₁₅form the 4th group of snr value, SNR ₄, SNR ₅, SNR ₁₃and SNR ₁₄form the 5th group of snr value, and calculate each group of signal to noise ratio (S/N ratio) mean value: SNR respectively _{average 1}, SNR _{average 2}, SNR _{average 3}, SNR _{average 4}, SNR _{average 5};

Calculate the error QE between each snr value and the group signal to noise ratio (S/N ratio) mean value corresponding to it _j, j=1 ..., 18;

Computer calculate meets QE _jthe number M of the output signal-to-noise ratio error of≤3% ₁; Computer calculate meets QE _jthe number M of the output signal-to-noise ratio error of > 3% ₂;

If (6-8) then the judgement that sample is not splicing meat made by computing machine;

If then the judgement that sample is splicing meat made by computing machine;

Otherwise computing machine makes i value be 1, return step (6-3), sample is detected again and carries out data processing.

As preferably, the thickness of described sheet meat is 40 to 70mm.

As preferably, described incident angle is 22 to 46 degree.

As preferably, the span of MAT is 112 luxs, lux to 210.

Therefore, the present invention has following beneficial effect: (1) detection speed is fast; (2) check point is more, and the reliability and the precision that detect data are higher.

Accompanying drawing explanation

Fig. 1 is a kind of structural representation of the present invention;

Fig. 2 is a kind of theory diagram of the present invention;

Fig. 3 is a kind of cut-open view of guide rail of the present invention;

Fig. 4 is a kind of vertical view of guide rail of the present invention;

Fig. 5 is the Strength Changes schematic diagram of detection light of the present invention;

A kind of process flow diagram of Fig. 6 to be of the present invention be strength.

In figure: Halogen lamp LED 1, spectrometer 2, light intensity regulating device 3, support 4, optical pickup apparatus 5, base plate 6, sample splint 7, net 8 placed by sample, L shape fixed arm 9, leveling board 10, montant 11, vertical adjutage 12, first drive motor 13, second drive motor 14, support column 15, guide rail 16, light-receiving head 17, 3rd drive motor 18, four-wheel drive motor 19, function memory 20, power amplifier 21, controller 22, fiber laser arrays head 23, keyboard 24, guiding base plate 161, groove 162, gear 163, coupling shaft 164, first curved baffle 165, second curved baffle 166, guide chute 167, outrigger shaft 168, third gear plate 169, fourth gear plate 170.

Embodiment

Below in conjunction with the drawings and specific embodiments, the present invention will be further described.

Embodiment is as shown in Figure 1 and Figure 2 a kind of splicing chicken pick-up unit, pick-up unit comprises light tight housing, controller 22, keyboard 24, Halogen lamp LED 1, spectrometer 2, light intensity regulating device 3, be located in housing for sending incident light and receiving the fiber laser arrays head 23 of reflected light, support 4 and optical pickup apparatus 5; Support comprises base plate 6, is positioned at the sample splint 7 above base plate and is located at the L shape fixed arm 9 on bottom edge, and sample splint is provided with sample putting hole 8, and the sample splint near sample putting hole is provided with the sample tuck 27 arranged at equal intervals;

L shape fixed arm comprise be positioned at leveling board 10 above sample splint with through sample splint and the montant 11 be fixedly connected with sample splint, the position be positioned at above sample putting hole of leveling board is provided with the vertical adjutage 12 extended to sample putting hole, leveling board is provided with the first drive motor 13 for driving vertical adjutage to horizontally rotate, and vertical adjutage bottom is provided with the second drive motor 14 for driving fiber laser arrays head to swing back and forth in vertical guide;

As shown in Figure 1, Figure 3, optical pickup apparatus comprises the support column 15 coaxial with vertical adjutage be located on base plate, be located at the guide rail 16 on support column and be located on guide rail for receiving the light-receiving head 17 of incident light through the transmitted light after sample, guide rail in and the arc-shaped being the center of circle with the swinging center of fiber laser arrays head; Be provided with the 3rd drive motor 18 for driving support column to rotate in base plate, light-receiving head is provided with the four-wheel drive motor 19 for driving light-receiving head to run in guide rail;

Light intensity regulating device, Halogen lamp LED are connected successively with fiber laser arrays head, and light detection head and light-receiving head are electrically connected with spectrometer respectively, and controller is electrically connected with keyboard, spectrometer and each drive motor respectively.

As shown in Figure 2, controller is STC89C52RC main control chip; Light intensity regulating device comprises function memory 20 and power amplifier 21, function memory is provided with the signal input interface for being electrically connected with controller, function memory is electrically connected with the input end of power amplifier, and the output terminal of power amplifier is connected with the power electric of Halogen lamp LED.

As shown in Fig. 1, Fig. 3, Fig. 4, guide rail comprises guiding base plate 161, is located at the arc of the plate upper surface base plate and lead in edge that leads to two the spaced grooves 162 extended, and groove floor is provided with the tooth bar arranged at equal intervals; Be provided with bottom light-receiving head two with the gear 163 of fit depressions; Four-wheel drive motor is positioned at light-receiving head bottom, and the rotating shaft of four-wheel drive motor is connected with the coupling shaft 164 be located between two gears, is also provided with third gear plate 169 and fourth gear plate 170.

Guiding base plate also comprises the first curved baffle 165 and second curved baffle 166 relative with the first curved baffle; First arc, the second curved baffle are provided with corresponding guide chute 167; The coupling shaft two ends of gear are provided with the outrigger shaft 168 of guide chute for inserting the first arc, the second curved baffle.

Drive motor is stepper motor; Support column is connected with base plate by bearing, and vertical adjutage is connected with leveling board by bearing, and fiber laser arrays head is connected with vertical adjutage by bearing.

As shown in Figure 6, a kind of detection method of splicing chicken pick-up unit, comprises the steps:

Step 100, sample preparation:

From chicken to be detected, take out the sheet meat of 20 grams of 40mm as detected sample, controller is electrically connected with spectrometer and each motor, sample is kept flat on sample tuck;

Step 200, regulates height of incidence and the angle of fiber laser arrays head:

Controller controls the second drive motor and drives fiber laser arrays head to turn to default incident angle; The initial value of setting adjutage number of revolutions i is 1;

Step 300, light-receiving head is located:

Computing machine drives adjutage to turn to angle 20 × i by the first drive motor, and makes the 3rd drive motor drive support column and adjutage synchronous axial system; Computing machine controls four-wheel drive driven by motor light-receiving head and moves on guide rail, and observe by spectrometer the light intensity that light-receiving head receives, computing machine be parked in guide rail by four-wheel drive Electric Machine Control light-receiving head with the position corresponding to the maximum of intensity of light;

Step 400, detects:

Computing machine regulates fiber laser arrays head output detections light by light intensity regulating device, and described detection light rises to maximal value MAT from 0 according to sinusoidal curve, then drops to 0 from maximal value MAT according to cotangent curve; Spectrometer receives detection signal Spect (t) that the reflected light corresponding with detecting light and transmitted light sum are formed;

Step 500, as i < 18, makes i value increase by 1, repeats step 300 to 400, obtains 18 detection signals Spect (t);

Step 600, data processing:

Computing machine all does following data processing to 18 detection signals Spect (t):

Step 610, inputs one deck accidental resonance model by detection signal Spect (t) in, wherein, V (x, t) is potential function, and x (t) is Brownian movement Particles Moving lopcus function, and a, b are the constant of setting, and ξ (t) is external noise, and D is external noise intensity, and N (t) grasps noise in being, for periodic sinusoidal signal, A is signal amplitude, and f is signal frequency, and t is run duration, for phase place, if

Step 620, computer calculate V (x, t) for the first order derivative of x and second derivative, and makes equation equal 0, obtains two layers of accidental resonance model:

Setting noise intensity D=0, spect (t)=0, N (t)=0; The critical value calculating A is

Step 630, substitutes into the critical value of A in one deck accidental resonance model, and sets X ₀(t)=0, sn ₀=0, with quadravalence jade for asking rain Ge Kuta Algorithm for Solving one deck accidental resonance model, obtain $x_{n+1}\left(t\right)=x_n\left(t\right)+1/6[{\left(k_1\right)}_n+(2-\sqrt{2}){\left(k_2\right)}_n+(2+\sqrt{2}){\left(k_3\right)}_n+{\left(k_4\right)}_n];$ And calculate ${\left(k_1\right)}_n=4({\mathrm{ax}}_{n-1}\left(t\right)-{\mathrm{bx}}_{n-1}^3\left(t\right)+{\mathrm{sn}}_{n-1}),$ ${\left(k_2\right)}_n=4[a(x_{n-1}\left(t\right)+\frac{{\left(k_1\right)}_{n-1}}{2})-b{(x_{n-1}\left(t\right)+\frac{{\left(k_1\right)}_{n-1}}{2})}^3+{\mathrm{sn}}_{n-1}],$ ${\left(k_3\right)}_n=4[a(x_{n-1}\left(t\right)+\frac{{\left(k_2\right)}_{n-1}}{2})-b{(x_{n-1}\left(t\right)+\frac{\sqrt{2}-1}{2}{\left(k_1\right)}_{n-1}+\frac{2-\sqrt{2}}{2}{\left(k_2\right)}_{n-1})}^3+{\mathrm{sn}}_{n+1}],$ ${\left(k_4\right)}_n=4[a(x_{n-1}\left(t\right)+{\left(k_3\right)}_{n-1})-b{(x_{n-1}\left(t\right)-\frac{\sqrt{2}}{2}{\left(k_2\right)}_{n-1}+\frac{2+\sqrt{2}}{2}{\left(k_3\right)}_{n-1})}^3+{\mathrm{sn}}_{n+1}];$

Wherein, x _nt n order derivative that () is x (t), sn _nthe value of n order derivative at t=0 place of S (t), n=0,1 ..., N-1; Obtain x ₁(t), x ₂(t) ..., x _n+1the value of (t);

Step 640, computing machine is to x ₁(t), x ₂(t) ..., x _n+1t () carries out integration, obtain x (t), and obtains x (t) produces accidental resonance moment position x in the double-deck stochastic system of one deck accidental resonance model and two layers of accidental resonance model composition _mvalue and x _mcorresponding resonance moment t ₁and and t ₁corresponding noise D ₁, D ₁for the value of in D; D is that the value of D and time correlation, be aware of t with a function of 0.01 loop cycle stepping in [0,1] scope ₁moment, D ₁just determine.

Step 650, computing machine utilizes formula $\mathrm{SNR}=\sqrt{2}{\left(\mathrm{\&Delta;U}\frac{{4a}^3/27b}{D_1}\right)}^2{e}^{-{\left(\mathrm{\&Delta;U}\right)}^2/D_1}$ Calculate the signal to noise ratio (S/N ratio) that double-deck stochastic resonance system exports; Wherein, Δ U=a ²/ 4b; Obtain 18 output signal-to-noise ratio SNR ₁, SNR ₂..., SNR ₁₈;

Step 700, computing machine is by SNR ₉and SNR ₁₈form the 1st group of snr value, SNR ₁, SNR ₈, SNR ₁₀and SNR ₁₇form the 2nd group of snr value, SNR ₂, SNR ₇, SNR ₁₁and SNR ₁₆form the 3rd group of snr value, SNR ₃, SNR ₆, SNR ₁₂and SNR ₁₅form the 4th group of snr value, SNR ₄, SNR ₅, SNR ₁₃and SNR ₁₄form the 5th group of snr value, and calculate each group of signal to noise ratio (S/N ratio) mean value: SNR respectively _{average 1}, SNR _{average 2}, SNR _{average 3}, SNR _{average 4}, SNR _{average 5};

Calculate the error QE between each snr value and the group signal to noise ratio (S/N ratio) mean value corresponding to it _j, j=1 ..., 18;

Computer calculate meets QE _jthe number M of the output signal-to-noise ratio error of≤3% ₁; Computer calculate meets QE _jthe number M of the output signal-to-noise ratio error of > 3% ₂;

Step 800, if then the judgement that sample is not splicing meat made by computing machine;

If then the judgement that sample is splicing meat made by computing machine;

Otherwise computing machine makes i value be 1, returns step 300, sample is detected again and carries out data processing.

In the present embodiment, M ₂=17, the judgement that sample is splicing meat made by computing machine.

Should be understood that the present embodiment is only not used in for illustration of the present invention to limit the scope of the invention.In addition should be understood that those skilled in the art can make various changes or modifications the present invention, and these equivalent form of values fall within the application's appended claims limited range equally after the content of having read the present invention's instruction.

Claims (9)

1. a splicing chicken pick-up unit, it is characterized in that, described pick-up unit comprises light tight housing, controller (22), keyboard (24), Halogen lamp LED (1), spectrometer (2), light intensity regulating device (3), be located in housing for sending incident light and receiving the fiber laser arrays head (23) of reflected light, support (4) and optical pickup apparatus (5); The L shape fixed arm (9) that described support comprises base plate (6), is positioned at the sample splint (7) above base plate and is located on bottom edge, sample splint is provided with sample putting hole (8), and the sample splint near sample putting hole is provided with several sample tucks (27);

Described L shape fixed arm comprise be positioned at leveling board (10) above sample splint with through sample splint and the montant (11) be fixedly connected with sample splint, the position be positioned at above sample putting hole of leveling board is provided with the vertical adjutage (12) extended to sample putting hole, leveling board is provided with the first drive motor (13) for driving vertical adjutage to horizontally rotate, and described vertical adjutage bottom is provided with the second drive motor (14) for driving fiber laser arrays head to swing back and forth in vertical guide;

Described optical pickup apparatus comprises the support column (15) coaxial with vertical adjutage be located on base plate, be located at the guide rail (16) on support column and be located on guide rail for receiving the light-receiving head (17) of incident light through the transmitted light after sample, described guide rail in and the arc-shaped being the center of circle with the swinging center of fiber laser arrays head; Be provided with the 3rd drive motor (18) for driving support column to rotate in described base plate, light-receiving head is provided with the four-wheel drive motor (19) for driving light-receiving head to run in guide rail;

Light intensity regulating device, Halogen lamp LED are connected successively with fiber laser arrays head, and light detection head and light-receiving head are electrically connected with spectrometer respectively, and controller is electrically connected with keyboard, spectrometer and each drive motor respectively.

2. splicing chicken pick-up unit according to claim 1, is characterized in that, described controller is STC89C52RC main control chip; Light intensity regulating device comprises function memory (20) and power amplifier (21), described function memory is provided with the signal input interface for being electrically connected with controller, described function memory is electrically connected with the input end of power amplifier, and the output terminal of described power amplifier is connected with the power electric of Halogen lamp LED.

3. splicing chicken pick-up unit according to claim 1, it is characterized in that, described guide rail comprises guiding base plate (161), is located at the arc of the plate upper surface base plate and lead in edge that leads to two the spaced grooves (162) extended, and described groove floor is provided with the tooth bar arranged at equal intervals; Be provided with bottom described light-receiving head two with the gear (163) of fit depressions; Described four-wheel drive motor is positioned at light-receiving head bottom, and the rotating shaft of four-wheel drive motor is connected with the coupling shaft be located between two gears (164).

4. splicing chicken pick-up unit according to claim 3, is characterized in that, described guiding base plate also comprises the first curved baffle (165) and second curved baffle (166) relative with the first curved baffle; First arc, the second curved baffle are provided with corresponding guide chute (167); The coupling shaft two ends of described gear are provided with the outrigger shaft (168) of guide chute for inserting the first arc, the second curved baffle.

5. the splicing chicken pick-up unit according to claim 1 or 2 or 3 or 4, it is characterized in that, described drive motor is stepper motor; Support column is connected with base plate by bearing, and vertical adjutage is connected with leveling board by bearing, and fiber laser arrays head is connected with vertical adjutage by bearing.

6. be applicable to a detection method for splicing chicken pick-up unit according to claim 1, it is characterized in that, comprise the steps:

(6-1) from chicken to be detected, take out sheet meat as detected sample, controller is electrically connected with spectrometer and each motor, sample is kept flat on sample tuck;

(6-2) controller controls the second drive motor drive fiber laser arrays head and turns to default incident angle; The initial value of setting adjutage number of revolutions i is 1;

(6-3) computing machine drives adjutage to turn to angle 20 × i by the first drive motor, and makes the 3rd drive motor drive support column and adjutage synchronous axial system; Computing machine controls four-wheel drive driven by motor light-receiving head and moves on guide rail, and observe by spectrometer the light intensity that light-receiving head receives, computing machine be parked in guide rail by four-wheel drive Electric Machine Control light-receiving head with the position corresponding to the maximum of intensity of light;

(6-4) computing machine regulates fiber laser arrays head output detections light by light intensity regulating device, and described detection light rises to maximal value MAT from 0 according to sinusoidal curve, then drops to 0 from maximal value MAT according to cotangent curve; Spectrometer receives detection signal Spect (t) that the reflected light corresponding with detecting light and transmitted light sum are formed;

(6-5) as i < 18, make i value increase by 1, repeat step (6-3) to (6-4), obtain 18 detection signals Spect (t);

(6-6) computing machine all does following data processing to 18 detection signals Spect (t):

(6-6-1) detection signal Spect (t) is inputted one deck accidental resonance model in, wherein, V (x, t) is potential function, and x (t) is Brownian movement Particles Moving lopcus function, and a, b are the constant of setting, and ξ (t) is external noise, and D is external noise intensity, and N (t) grasps noise in being, for periodic sinusoidal signal, A is signal amplitude, and f is signal frequency, and t is run duration, for phase place, if

(6-6-2) computer calculate V (x, t) is for the first order derivative of x and second derivative, and makes equation equal 0, obtains two layers of accidental resonance model:

Setting noise intensity D=0, spect (t)=0, N (t)=0; The critical value calculating A is

(6-6-3) critical value of A is substituted in one deck accidental resonance model, and set X ₀(t)=0, sn ₀=0, with quadravalence jade for asking rain Ge Kuta Algorithm for Solving one deck accidental resonance model, obtain $x_{n+1}\left(t\right)=x_n\left(t\right)+1/6[{\left(k_1\right)}_n+(2-\sqrt{2}){\left(k_2\right)}_n+(2+\sqrt{2}){\left(k_3\right)}_n+{\left(k_4\right)}_n];$ And calculate ${\left(k_1\right)}_n=4({\mathrm{ax}}_{n-1}\left(t\right)-{\mathrm{bx}}_{n-1}^3\left(t\right)+{\mathrm{sn}}_{n-1}),$ ${\left(k_2\right)}_n=4[a(x_{n-1}\left(t\right)+\frac{{\left(k_1\right)}_{n-1}}{2})-b{(x_{n-1}\left(t\right)+\frac{{\left(k_1\right)}_{n-1}}{2})}^3+{\mathrm{sn}}_{n-1}],$ ${\left(k_3\right)}_n=4[a(x_{n-1}\left(t\right)+\frac{{\left(k_2\right)}_{n-1}}{2})-b{(x_{n-1}\left(t\right)+\frac{\sqrt{2}-1}{2}{\left(k_1\right)}_{n-1}+\frac{2-\sqrt{2}}{2}{\left(k_2\right)}_{n-1})}^3+{\mathrm{sn}}_{n+1}],$ ${\left(k_4\right)}_n=4[a(x_{n-1}\left(t\right)+{\left(k_3\right)}_{n-1})-b{(x_{n-1}\left(t\right)-\frac{\sqrt{2}}{2}{\left(k_2\right)}_{n-1}+\frac{2+\sqrt{2}}{2}{\left(k_3\right)}_{n-1})}^3+{\mathrm{sn}}_{n+1}];$

Wherein, x _nt n order derivative that () is x (t), sn _n-1the value of n-1 order derivative at t=0 place of S (t), sn _n+1the value of n+1 order derivative at t=0 place of S (t), n=0,1 ..., N-1; Obtain x ₁(t), x ₂(t) ..., x _n+1the value of (t);

(6-6-4) computing machine is to x ₁(t), x ₂(t) ..., x _n+1t () carries out integration, obtain x (t), and obtains x (t) produces accidental resonance moment position x in the double-deck stochastic system of one deck accidental resonance model and two layers of accidental resonance model composition _mvalue and x _mcorresponding resonance moment t ₁and and t ₁corresponding noise D ₁, D ₁for the value of in D;

(6-6-5)

Computing machine utilizes formula $\mathrm{SNR}=\sqrt{2}{\left(\mathrm{\&Delta;U}\frac{{4a}^3/27b}{D_1}\right)}^2{e}^{-{\left(\mathrm{\&Delta;U}\right)}^2/D_1}$ Calculate the signal to noise ratio (S/N ratio) that double-deck stochastic resonance system exports; Wherein, Δ U=a ²/ 4b; Obtain 18 output signal-to-noise ratio SNR ₁, SNR ₂..., SNR ₁₈;

(6-7) computing machine is by SNR ₉and SNR ₁₈form the 1st group of snr value, SNR ₁, SNR ₈, SNR ₁₀and SNR ₁₇form the 2nd group of snr value, SNR ₂, SNR ₇, SNR ₁₁and SNR ₁₆form the 3rd group of snr value, SNR ₃, SNR ₆, SNR ₁₂and SNR ₁₅form the 4th group of snr value, SNR ₄, SNR ₅, SNR ₁₃and SNR ₁₄form the 5th group of snr value, and calculate each group of signal to noise ratio (S/N ratio) mean value: SNR respectively _{average 1}, SNR _{average 2}, SNR _{average 3}, SNR _{average 4}, SNR _{average 5};

Calculate the error QE between each snr value and the group signal to noise ratio (S/N ratio) mean value corresponding to it _j, j=1 ..., 18;

Computer calculate meets QE _jthe number M of the output signal-to-noise ratio error of≤3% ₁; Computer calculate meets QE _jthe number M of the output signal-to-noise ratio error of > 3% ₂;

If (6-8) then the judgement that sample is not splicing meat made by computing machine;

If then the judgement that sample is splicing meat made by computing machine;

Otherwise computing machine makes i value be 1, return step (6-3), sample is detected again and carries out data processing.

7. the detection method of splicing chicken pick-up unit according to claim 6, is characterized in that, the thickness of described sheet meat is 40 to 70mm.

8. the detection method of splicing chicken pick-up unit according to claim 6, is characterized in that, described incident angle is 22 to 46 degree.

9. the detection method of the splicing chicken pick-up unit according to claim 6 or 7 or 8, is characterized in that, the span of MAT is 112 luxs, lux to 210.