CN104374716B - Spliced beef detection system and method - Google Patents

Abstract

The invention discloses a spliced beef detection system and method. The system includes a controller and a detection mechanism, the detection mechanism comprises a base, the base is provided with a detection platform, a rectangular groove is arranged in the middle of the detection platform, a liquid is stored in the rectangular groove, a sample tray is arranged above the liquid, the front end and the rear end of the sample tray are respectively provided with a first permanent magnet and a second permanent magnet, the bottom of the sample tray is provided with a positioning column, the bottom of the positioning column is provided with a positioning head, the positioning head is made of a ferromagnetic material, the front inner side face of the rectangular groove is provided with a first electromagnet and a first proximity switch, the rear inner side face of the rectangular groove is provided with a second electromagnet, the bottom surface of the rectangular groove is provided with a plurality of positioning blocks, a first drive motor for driving the positioning blocks to rotate is arranged below the positioning blocks, the positioning blocks are provided with positioning holes, third electromagnets and second proximity switches are arranged at the bottom of the positioning holes, and an optical transceiver is arranged above the sample tray. The spliced beef detection system can fast, conveniently and accurately detect whether beef is spliced beef.

Description

One kind splicing beef detecting system and method

Technical field

The present invention relates to technical field of food detection, more particularly to a kind of splicing beef detecting system and method.

Background technology

Beef taste is delicious, nutritious, in good taste, is first-class food materials.But due to its production cost it is higher, especially Top grade beef block, it is expensive.And splice beef and be spliced by different size of fragment beef, not only mouthfeel is bad, and Also pollution can be formed between the beef clod of separate sources, food-safety problem is formed.

China Patent Publication No. CN1603794, in publication date on April 6th, 2005, the entitled near infrared technology of invention is quick Detection tenderness of beef utilizing method and apparatus, this application case disclose a kind of method of rapidly detecting tenderness of beef utilizing near infrared technology and Device, it is by near-infrared light source, near infrared detector, diffuse-reflectance fiber plant, microprocessor, display and recording equipment and can turn Dynamic object stage is constituted.Its weak point is that the detection means can not detect whether beef is splicing beef.

The content of the invention

The purpose of the present invention is to overcome current beef detecting system to detect whether beef is that the technology for splicing beef is asked Topic, there is provided one kind splicing beef detecting system and method, its can quickly, simplicity, detect whether beef is spelling exactly Connect beef.

In order to solve the above problems, the present invention is employed the following technical solutions and is achieved：

A kind of splicing beef detecting system of the present invention, including controller and testing agency, the controller includes central authorities Processing unit, touch screen and light source control module, the testing agency includes base, and the base is provided with monitor station, described Monitor station middle part is provided with rectangular recess, and liquid is stored in the rectangular recess, and the liquid is provided with rounded sample carrier Disk, the front-end and back-end of the sample tray are respectively equipped with the first permanent magnet and the second permanent magnet, and the sample tray bottom sets There is locating dowel, the positioning column bottom is provided with positioning head, and the positioning head is made up of ferrimagnet, before the rectangular recess Medial surface is provided with the first electric magnet and the first proximity switch, and the rear medial surface of the rectangular recess is provided with the second electric magnet, described The bottom surface of rectangular recess is provided with several locating pieces, and the locating piece lower section is provided with the first driving electricity for driving locating piece to rotate Machine, the locating piece is provided with the location hole for coordinating and limiting positioning head freely to rotate with positioning head, described several locating pieces On location hole be arranged in a linear from front to back, the location hole bottom is provided with the 3rd electric magnet and the second proximity switch, described Sample tray top is provided with optical transceiver, and the optical transceiver includes radiation source and optical receiver, the CPU Respectively with touch screen, light source control module, the first electric magnet, the second electric magnet, the 3rd electric magnet, the first proximity switch, second Proximity switch, the first motor and optical receiver electrical connection, the light source control module is also electrically connected with radiation source.

In the technical program, radiation source is Halogen light or generating laser.During detection, beef sample to be measured is placed On sample tray, beef sample is set to be centrally located at the center of sample tray.

The work of electromagnet of central processing unit controls first, the first electric magnet produces suction, and first on sample tray is forever Magnet is acted on by the first electromagnet suction, and sample tray to the anteromedial surface of rectangular recess is moved, while the first permanent magnet is inhaled Power effect just to the first electric magnet, calibrates the position of positioning head, it is ensured that positioning head is inserted into location hole.In rectangular recess or so The distance between side wall is more bigger than the diameter of sample tray, makes sample tray be merely able to move forward and backward, it is ensured that positioning head is in positioning The straight line upper direction that hole is arranged in, is easy to positioning head to insert location hole.When sample tray moves to rectangular recess anteromedial surface During place, the first proximity switch sends trigger, and CPU receives the trigger that the first proximity switch sends, control Make the first electric magnet to quit work, the 3rd electromagnetism ironworker of the nearest location hole bottom of command range rectangular recess anteromedial surface Make, the 3rd electric magnet produces suction, the positioning head of sample tray bottom is inserted the location hole by the suction of the 3rd electric magnet, The second proximity switch in the location hole sends trigger.CPU receives trigger, judgement sample pallet Position successfully, now the central point of sample tray is located at the underface of optical transceiver.

User can select sample tray to need the position of positioning hole of insertion by touch screen.Central processing unit controls distance 3rd electric magnet of the nearest location hole bottom of rectangular recess anteromedial surface quits work, and sample tray is floated by buoyancy, The positioning head of sample tray bottom leaves location hole.The electric magnet of central processing unit controls second and sample tray need insertion Location hole bottom the 3rd work of electromagnet, the second permanent magnet on sample tray by the second electromagnet suction act on, sample Pallet to the rear medial surface of rectangular recess is moved.When sample tray moves to the location hole top for needing insertion, sample tray The positioning head of lower section is acted on by the 3rd electromagnet suction, and the positioning head of sample tray bottom inserts the location hole, in the location hole The second proximity switch send trigger.CPU receives trigger, and judgement sample pallet is successively inserted into use The location hole that family selects.Sample tray is moved forward and backward in a liquid, without frictional dissipation, realizes being accurately positioned by location hole.

The locating piece that the location hole of central processing unit controls sample tray insertion is located rotates a circle, and often horizontally rotates 30 Degree stops and detects a spectroscopic data.During detection spectroscopic data, the intensity curve of the detection light that radiation source sends first from 0 according to Maximum is ramped, then drops to 0 according to straight line from maximum.The intensity of reflected light that optical receiver detection is received, And CPU is sent it to, CPU is carried out after respective handling to detection data, judges beef sample to be measured Whether product are splicing beef.

The principle of beef is spliced in optical detection：Naturally continuous, orderliness is clear, color and luster is unified, aqueous for the beef lines of monoblock Amount it is close, therefore its be with the reflection absorption spectrum signal of angle of incidence it is close, can as detection foundation.And splice meat Although different fragments are through arranging, gluing and surface treatment, in meat lines and discontinuous in it, there is overall tomography, Color and luster difference is larger, and water content is difficult unanimously, therefore can be determined whether to splice beef according to optical detecting method.

The present invention is the incident illumination irradiating sample being continually changing using light intensity, gradually greatly or is reduced in the intensity of incident illumination Change procedure in, absorption of the different groups to respective wavelength light is gradually big or reduces, now at the degree of absorption of group During unsaturation, saturation diminuendo, more detection informations are included in reflected light, so as to enable the detection signal for obtaining more Accurately symbolize whether beef is splicing.

Preferably, the positioning head is in flat, the longitudinal section of the positioning head is in inverted isosceles trapezoid, described fixed The shape in position hole and the form fit of positioning head, the location hole top is provided with inclined spigot surface.Location hole is along from front to back Direction is arranged, and the spigot surface of the left and right sides at the top of location hole play the guiding role, and is easy to positioning head to insert location hole.

Preferably, the distance between described rectangular recess or so medial wall matches with the diameter of sample tray.Rectangle The distance between groove or so medial wall is more bigger than the diameter of sample tray, makes sample tray be merely able to move forward and backward, it is ensured that fixed The straight line upper direction that potential head is arranged in location hole, is easy to positioning head to insert location hole.

Preferably, the light source control module includes the digital capture cards of NI and power amplifier, the NI is digital to be adopted The input of truck is electrically connected with CPU, the outfan of the digital capture card of the NI and the input of power amplifier Electrical connection, the outfan of the power amplifier is electrically connected with radiation source.The digital capture card collection CPU of NI is sent out The control signal for going out, and the detection light that radiation source sends varying strength is controlled by power amplifier.

Preferably, receiving and dispatching positioned at light apart from the nearest location hole of rectangular recess anteromedial surface on the rectangular recess bottom surface The underface of device.It is used for the initial alignment of sample tray apart from rectangular recess anteromedial surface nearest location hole, foremost is determined The distance between position hole and rearmost location hole for sample tray radius.

A kind of splicing beef detection method of the present invention, comprises the following steps：

S1：Lamellar beef sample is prepared, beef sample is placed on sample tray, make beef sample be centrally located at sample The center of product pallet；

S2：The instruction that CPU is input into according to user by touch screen, control sample tray insertion user specify Location hole；

S3：CPU is radiated at by the detection light that light source control module control radiation source sends certain light intensity On beef sample, detection light intensity then drops to from maximum first from 0 according to ramping to maximum according to straight line 0, optical receiver collection reflected spectrum data Spect (t), the location hole institute that then central processing unit controls sample tray is inserted The first motor work below locating piece, the first motor control locating piece rotates 30 degree, makes sample tray level 30 degree of rotation, optical receiver gathers the spectroscopic data of now radiation source point of irradiation, so control sample tray horizontal rotation 360 Degree, often horizontally rotates 30 degree of spectroscopic datas of detection that stop, so as to the spectrum for gathering 12 diverse locations on beef sample Data Spect (t)；

S4：Collect 12 spectroscopic datas Spect (t) are carried out same data processing by CPU, meter 12 signal to noise ratio eigenvalues are calculated, the data processing that each spectroscopic data Spect (t) is carried out is comprised the following steps：

Write using input letterAs input matrix, potential function V (x, t, α) cooperate with input signal as one layer of accidental resonance model：

Wherein, V (x, t, α) is potential function, and x (t) is Brownian Particles movement locus function, and t is movement time,For periodic sinusoidal signal, N (t) grasps noise for interior, and A is signal amplitude, and f is signal frequency, and D is outer noise Intensity, ξ (t) is outer noise,For phase place,

First derivatives of the V (x, t, α) for x (t), second dervative and three order derivatives are calculated, and makes equation be equal to 0, obtained To two layers of accidental resonance model：

Setting noise intensity D=0,Spect (t)=0, N (t)=0 is calculated the marginal value of A For A_c=4a³/(27b²α⁸), by A_cIn substituting into one layer of accidental resonance model, and set x₀(t)=0, sn₀=0, using quadravalence jade for asking rain One layer of accidental resonance model of Ge Kuta Algorithm for Solving, obtains：

Wherein, undetermined coefficient：

(k₁)_n=a (α x_n-1(t))²-b(αx_n-1(t))³+sn_n-1 (4)

Wherein, x_n(t) for x (t) n order derivatives, sn_nIt is value of the n order derivatives of S (t) at t=0, a, b are the normal of setting Number,

It is calculated x₁(t), x₂(t)…x_n+1The value of (t), to x₁(t), x₂(t)…x_n+1T () is integrated and obtains x (t), And obtain x (t) and produce resonance in the double-deck stochastic resonance system of one layer of accidental resonance model and two layers of accidental resonance model composition The position x at moment_mValue and x_mMoment t1 corresponding with t1 acceleration of motion α 1 of corresponding resonance and corresponding with t1 Noise D1, D1 are a value in D,

By formulaIt is calculated signal to noise ratio eigenvalue SNR_Feature, wherein, Δ U=a²/4b；

S5：Calculate 12 signal to noise ratio eigenvalues are divided into into four groups, by SNR_{Feature 3}、SNR_{Feature 6}、SNR_{Feature 9}、SNR_{Feature 12}Point For first group, by SNR_{Feature 2}、SNR_{Feature 4}、SNR_{Feature 7}、SNR_{Feature 11}It is divided into second group, by SNR_{Feature 1}And SNR_{Feature 5}It is divided into the 3rd group, will SNR_{Feature 8}And SNR_{Feature 10}It is divided into the 4th group, and the signal to noise ratio meansigma methodss of calculating each group respectively, obtains SNR_{Average 1}、SNR_{Average 2}、 SNR_{Average 3}、SNR_{Average 4},

Calculate error QE between each signal to noise ratio eigenvalue and the signal to noise ratio meansigma methodss of the group corresponding to it_j, j= 1 ..., 12；

Statistics meets QE_jNumber M of≤2% signal to noise ratio eigenvalue₁, count and meet QE_jThe signal to noise ratio eigenvalue of ＞ 2% Number M₂；

S6：IfThen CPU judges that the beef sample is not splicing beef, ifThen CPU judges that the beef sample is splicing beef, step S3 is otherwise jumped to, to beef sample Re-start detection.

Preferably, step S2 is comprised the following steps：

S21：The work of electromagnet of central processing unit controls first, sample tray is arrived by the first electromagnet suction action At rectangular recess anteromedial surface, the first proximity switch sends trigger；

S22：CPU receives the trigger that the first proximity switch sends, and the first electric magnet of control stops work Make, the 3rd work of electromagnet of the nearest location hole bottom of command range rectangular recess anteromedial surface, the 3rd electric magnet produces suction Power, the positioning head of sample tray bottom is inserted the location hole by the suction of the 3rd electric magnet, and second in the location hole connects Nearly switch sends trigger；

S23：CPU receives the trigger that the second proximity switch sends, and judgement sample pallet is positioned to Work(, now the central point of sample tray is positioned at the underface of optical transceiver；

S24：CPU reads user and determines that sample tray needs determining for insertion by the instruction that touch screen is input into Position hole site；

S25：Threeth electric magnet of the central processing unit controls apart from the nearest location hole bottom of rectangular recess anteromedial surface Quit work, sample tray is floated by buoyancy, the positioning head of sample tray bottom leaves location hole；

S26：The electric magnet of central processing unit controls second and sample tray need the 3rd of the location hole bottom of insertion Work of electromagnet, the positioning head of sample tray bottom inserts the location hole, and the second proximity switch in the location hole sends triggering Signal.

The present invention substantial effect be：(1) can quickly, it is easy, detect whether beef is splicing beef exactly. (2) sample tray is moved forward and backward in a liquid, without frictional dissipation, realizes being accurately positioned by location hole.

Description of the drawings

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

Fig. 2 is the structural representation of rectangular recess；

Fig. 3 is the structural representation of rectangular recess and sample tray；

Fig. 4 is the sectional view of Fig. 3；

Fig. 5 is the structural representation of location hole；

Fig. 6 is the circuit theory connection block diagram of the present invention；

The light intensity curve figure of the detection light that radiation source sends when Fig. 7 is detection.

In figure：1st, CPU, 2, touch screen, 3, light source control module, 4, base, 5, monitor station, 6, rectangle it is recessed Groove, 7, sample tray, the 8, first permanent magnet, the 9, second permanent magnet, 10, locating dowel, 11, positioning head, the 12, first electric magnet, 13, Second electric magnet, 14, locating piece, the 15, first motor, 16, location hole, the 17, the 3rd electric magnet, the 18, first proximity switch, 19th, optical transceiver, 20, radiation source, 21, optical receiver, 22, elevating mechanism, 23, spigot surface, 24, the digital capture cards of NI, 25th, power amplifier, 26, photographic head, 27, transverse link, 28, longitudinal rod, 29, screw mandrel, 30, support bar, 31, thread bush, 32, Sleeve pipe, the 33, second proximity switch.

Specific embodiment

Below by embodiment, and accompanying drawing is combined, technical scheme is described in further detail.

Embodiment：A kind of splicing beef detecting system of the present embodiment, as shown in Figure 1, Figure 2, Figure 3, Figure 4, including control Device and testing agency, controller includes CPU 1, touch screen 2 and light source control module 3, and testing agency includes base 4, base 4 is provided with monitor station 5, and the middle part of monitor station 5 is provided with rectangular recess 6, rectangular recess 6 and stores liquid, sets on liquid The front-end and back-end for having rounded sample tray 7, sample tray 7 are respectively equipped with the first permanent magnet and the second permanent magnet, sample The bottom of pallet 7 is provided with locating dowel 10, and the bottom of locating dowel 10 is provided with positioning head 11, and positioning head 11 is made up of ferrimagnet, rectangle The anteromedial surface of groove 6 is provided with the first electric magnet 12 and the first proximity switch 18, and it is electric that the rear medial surface of rectangular recess 6 is provided with second Magnet 13, the bottom surface of rectangular recess 6 is provided with seven locating pieces 14, and the lower section of locating piece 14 is provided with drive locating piece 14 to rotate first Motor 15, locating piece 14 is provided with the location hole 16 for coordinating and limiting positioning head 11 freely to rotate with positioning head 11, seven Location hole 16 on locating piece 14 is arranged in a linear from front to back, and the bottom of location hole 16 is provided with the 3rd electric magnet 17 and second and is close to Switch 33, the top of sample tray 7 is provided with optical transceiver 19, and optical transceiver 19 includes radiation source 20 and optical receiver 21, base 4 On be additionally provided with drive optical transceiver 19 move up and down elevating mechanism 22.

As shown in fig. 6, light source control module 3 includes the digital capture cards 24 of NI and power amplifier 25, the top of rectangular recess 6 Be additionally provided with photographic head 26, photographic head 26 is connected by connector with elevating mechanism 22, CPU 1 respectively with touch screen 2, First electric magnet 12, the second electric magnet 13, the 3rd electric magnet 17, the first proximity switch 18, the second proximity switch 33, first drive The input electrical connection of the digital capture card 24 of motor 15, optical receiver 21, elevating mechanism 22, photographic head 26, NI, NI is digital The outfan of capture card 24 is electrically connected with the input of power amplifier 25, and outfan and the radiation source 20 of power amplifier 25 are electrically connected Connect.

Elevating mechanism 22 is rotated including transverse link 27, longitudinal rod 28, screw mandrel 29, support bar 30 and drive screw 29 The second motor, screw mandrel 29 and support bar 30 be vertically arranged on base 4, and the one end of transverse link 27 is provided with and is set in screw mandrel Thread bush 31 on 29 and the sleeve pipe 32 being set on support bar 30, the other end of the transverse link 27 and longitudinal rod 28 Top is connected, and the optical transceiver 19 is arranged on the bottom of longitudinal rod 28, the direction of illumination of radiation source 20 straight down, the Two motors are electrically connected with CPU 1.CPU 1 can adjust optical transceiver 29 by elevating mechanism 22 Upper-lower position, to meet actually detected demand.

Positioning head 11 is in flat, and the longitudinal section of positioning head 11 is in inverted isosceles trapezoid, the shape of location hole 16 with it is fixed The form fit of potential head 11, as shown in figure 5, the top of location hole 16 is respectively arranged on the left side and the right side inclined spigot surface 23.Location hole 16 are arranged along direction from front to back, and the spigot surface 23 of the top left and right sides of location hole 16 play the guiding role, and are easy to positioning head 11 to insert Enter location hole 16.

The distance between medial wall of rectangular recess 6 or so matches with the diameter of sample tray 7.In rectangular recess 6 or so The distance between side wall 2cm bigger than the diameter of sample tray 7, makes sample tray 7 be merely able to move forward and backward, it is ensured that positioning head 11 exists The straight line upper direction that location hole 16 is arranged in, is easy to positioning head 11 to insert location hole 16.

Optical transceiver 19 is being located on the bottom surface of rectangular recess 6 just apart from the nearest location hole 16 of the anteromedial surface of rectangular recess 6 Lower section.It is used for the initial alignment of sample tray 7, the positioning of foremost apart from the nearest location hole 16 of the anteromedial surface of rectangular recess 6 The distance between hole 16 and rearmost location hole 16 for sample tray 7 radius.

Sample tray 7 includes rounded chassis and the annular sidewall being connected with chassis outer rim, the first permanent magnet and the Two permanent magnets are embedded in respectively the front-end and back-end of annular sidewall, and tray bottom is provided with downwardly projecting projection, and projection is in spherical crown Shape, locating dowel 10 is arranged on the bottom of projection.Projection in spherical, enable sample tray 7 smoothly in a liquid on float downward Dynamic, chassis is used to place beef sample to be measured, and annular sidewall can prevent liquid from splashing on the beef sample to be measured on chassis.

The control signal that the digital collection of capture card 24 CPU 1 of NI sends, and controlled by power amplifier 25 Radiation source 20 sends the detection light of varying strength.Photographic head 26 gathers the image information of rectangular recess 6, and is sent to centre Reason unit 1, CPU 1 obtains the positional information of sample tray 7 by image procossing, movable in sample tray 7 When be monitored, if sample tray 7 do not move to need insertion location hole 16 surface, CPU 1 lead to Cross the first electric magnet 12 and the second electric magnet 13 adjusts the position of sample tray 7, be easy to CPU 1 more accurately to adjust The position of sample tray 7.Radiation source 20 is Halogen light.

During detection, beef sample to be measured is placed on sample tray 7, makes beef sample be centrally located at sample tray 7 Center.

CPU 1 controls the first electric magnet 12 and works, and the first electric magnet 12 produces suction, on sample tray 7 First permanent magnet receives the suction of the first electric magnet 12, and sample tray 7 to the anteromedial surface of rectangular recess 6 is moved, while first Permanent magnet, just to the first electric magnet 12, is calibrated the position of positioning head 11, it is ensured that positioning head 11 is inserted into positioning by suction Hole 16.The distance between the medial wall of rectangular recess 6 or so is more bigger than the diameter of sample tray 7, before and after being merely able to sample tray 7 Motion, it is ensured that the straight line upper direction that positioning head 11 is arranged in location hole 16, is easy to positioning head 11 to insert location hole 16.Work as sample (now, positioning head 11 is located at nearest apart from the anteromedial surface of rectangular recess 6 when product pallet 7 contacts with the anteromedial surface of rectangular recess 6 Location hole 16 surface), the first proximity switch 18 sends trigger, and CPU 1 receives first and is close to be opened 18 triggers for sending are closed, the first electric magnet 12 of control quits work, and the anteromedial surface of command range rectangular recess 6 is nearest to be determined 3rd electric magnet 17 of the position bottom of hole 16 works, and the 3rd electric magnet 17 produces suction, and the positioning head 11 of the bottom of sample tray 7 is by the The suction of three electric magnet 17 inserts the location hole 16, and the second proximity switch 33 in the location hole 16 sends trigger. CPU 1 receives the trigger that the second proximity switch 33 sends, and judgement sample pallet 7 is positioned successfully, now sample The central point of product pallet 7 is located at the underface of optical transceiver 19.

User can select sample tray 7 to need the position of location hole 16 of insertion by touch screen 2.CPU 1 is controlled Threeth electric magnet 17 of the system apart from the nearest bottom of location hole 16 of the anteromedial surface of rectangular recess 6 quits work, and sample tray 7 is by floating Power effect floats, and the positioning head 11 of the bottom of sample tray 7 leaves location hole 16.CPU 1 controls the second electric magnet 13 And sample tray 7 needs the 3rd electric magnet 17 of the bottom of location hole 16 of insertion to work, the second permanent magnet on sample tray 7 By the suction of the second electric magnet 13, sample tray 7 to the rear medial surface of rectangular recess 6 is moved.Need when sample tray 7 is moved to During 16 top of location hole to be inserted, the positioning head 11 of the lower section of sample tray 7 receives the suction of the 3rd electric magnet 13, sample tray The positioning head 11 of 7 bottoms inserts the location hole 16, and the second proximity switch 33 in the location hole 16 sends trigger.Centre Reason unit 1 receives trigger, and judgement sample pallet 7 is successively inserted into the location hole 16 of user's selection.Sample tray 7 is in liquid In move forward and backward, without frictional dissipation, realize being accurately positioned by location hole 16.

The locating piece 14 that the location hole 16 of the control insertion of sample tray 7 of CPU 1 is located rotates a circle, per level Rotate 30 degree of spectroscopic datas of detection that stop.During detection spectroscopic data, the intensity curve of the detection light that radiation source 20 sends First then drop to 0 according to straight line from maximum, as shown in Figure 7 according to ramping to maximum from 0.Optical receiver 21 is examined The intensity of reflected light curve that survey is received, and CPU 1 is sent it to, CPU 1 is entered to detection data After row respective handling, judge whether beef sample to be measured is splicing beef.

The principle of beef is spliced in optical detection：Naturally continuous, orderliness is clear, color and luster is unified, aqueous for the beef lines of monoblock Amount it is close, therefore its be with the reflection absorption spectrum signal of angle of incidence it is close, can as detection foundation.And splice meat Although different fragments are through arranging, gluing and surface treatment, in meat lines and discontinuous in it, there is overall tomography, Color and luster difference is larger, and water content is difficult unanimously, therefore can be determined whether to splice beef according to optical detecting method.

The present invention is the incident illumination irradiating sample being continually changing using light intensity, gradually greatly or is reduced in the intensity of incident illumination Change procedure in, absorption of the different groups to respective wavelength light is gradually big or reduces, now at the degree of absorption of group During unsaturation, saturation diminuendo, more detection informations are included in reflected light, so as to enable the detection signal for obtaining more Accurately symbolize whether beef is splicing.

A kind of a kind of splicing beef detection method of the present embodiment, it is adaptable to above-mentioned splicing beef detecting system, including Following steps：

S1：The beef sample that thickness is 4mm-5mm is prepared, beef sample is placed on sample tray, make beef sample It is centrally located at the center of sample tray；

S2：The instruction that CPU is input into according to user by touch screen, control sample tray insertion user specify Location hole；

S3：CPU is radiated at by the detection light that light source control module control radiation source sends certain light intensity On beef sample, detection light intensity then drops to from maximum first from 0 according to ramping to maximum according to straight line 0, optical receiver collection reflected spectrum data Spect (t), the location hole institute that then central processing unit controls sample tray is inserted The first motor work below locating piece, the first motor control locating piece rotates 30 degree, makes sample tray level 30 degree of rotation, optical receiver gathers the spectroscopic data of now radiation source point of irradiation, so control sample tray horizontal rotation 360 Degree, often horizontally rotates 30 degree of spectroscopic datas of detection that stop, so as to the spectrum for gathering 12 diverse locations on beef sample Data Spect (t)；

S4：Collect 12 spectroscopic datas Spect (t) are carried out same data processing by CPU, meter 12 signal to noise ratio eigenvalues are calculated, the data processing that each spectroscopic data Spect (t) is carried out is comprised the following steps：

Using input signalAs input matrix,

Under adiabatic approximation condition, it is assumed that signal amplitude minimum (A ＜ ＜ 1), bistable system is driving without enough energy In the case of dynamic, Brownian movement particle is offset in the potential well of side, and the signal period is than the system relaxation time in some typical potential wells That what is grown is more, and the now appearance of cyclic drive power makes potential function run-off the straight, ultimately results in Brownian movement particle from a gesture To the transition of another potential well, therefore potential function V (x, t, α) cooperates with as one layer of accidental resonance model trap with input signal：

Wherein, V (x, t, α) is potential function, and x (t) is Brownian Particles movement locus function, and t is movement time,For periodic sinusoidal signal, N (t) grasps noise for interior, and A is signal amplitude, and f is signal frequency, and D is outer noise Intensity, ξ (t) is outer noise,For phase place,

First derivatives of the V (x, t, α) for x (t), second dervative and three order derivatives are calculated, and makes equation be equal to 0, obtained To two layers of accidental resonance model：

Setting noise intensity D=0,Spect (t)=0, N (t)=0 is calculated the marginal value of A For A_c=4a³/(27b²α⁸), in A ＜ A_cIn the case of, Brownian movement particle is hovered in its home position or so, can not The transition between two potential wells is realized, but particle is in the case where outer noise intervention is obtained, even A ＜ A_cIt also can be completed Transition between potential well, here it is the generating process of accidental resonance, by A_cIn substituting into one layer of accidental resonance model, and set x₀(t) =0, sn₀=0, using quadravalence jade for asking rain Ge Kuta one layer of accidental resonance model of Algorithm for Solving, obtain：

Wherein, undetermined coefficient：

(k₁)_n=a (α x_n-1(t))²b(αx_n-1(t))³+sn_n-1 (4)

Wherein, x_n(t) for x (t) n order derivatives, sn_nIt is value of the n order derivatives of S (t) at t=0, a, b are the normal of setting Number,

It is calculated x₁(t), x₂(t)…x_n+1The value of (t), to x₁(t), x₂(t)…x_n+1T () is integrated and obtains x (t), And obtain x (t) and produce resonance in the double-deck stochastic resonance system of one layer of accidental resonance model and two layers of accidental resonance model composition The position x at moment_mValue and x_mMoment t1 corresponding with t1 acceleration of motion α 1 of corresponding resonance and corresponding with t1 Noise D1, D1 are a value in D,

By formulaIt is calculated signal to noise ratio eigenvalue SNR_Feature, wherein, Δ U=a²/4b；

S5：Calculate 12 signal to noise ratio eigenvalues are divided into into four groups, by SNR_{Feature 3}、SNR_{Feature 6}、SNR_{Feature 9}、SNR_{Feature 12}Point For first group, by SNR_{Feature 2}、SNR_{Feature 4}、SNR_{Feature 7}、SNR_{Feature 11}It is divided into second group, by SNR_{Feature 1}And SNR_{Feature 5}It is divided into the 3rd group, will SNR_{Feature 8}And SNR_{Feature 10}It is divided into the 4th group, and the signal to noise ratio meansigma methodss of calculating each group respectively, obtains SNR_{Average 1}、SNR_{Average 2}、 SNR_{Average 3}、SNR_{Average 4},

Calculate error QE between each signal to noise ratio eigenvalue and the signal to noise ratio meansigma methodss of the group corresponding to it_j, j= 1 ..., 12；

Statistics meets QE_jNumber M of≤2% signal to noise ratio eigenvalue₁, count and meet QE_jThe signal to noise ratio eigenvalue of ＞ 2% Number M₂；

S6：IfThen CPU judges that the beef sample is not splicing beef, ifThen CPU judges that the beef sample is splicing beef, step S3 is otherwise jumped to, to beef sample Re-start detection.

Light intensity then drops to 0 detection from maximum first from 0 according to ramping to maximum according to straight line Light is adapted to detect beef sample of the thickness for 4mm-5mm.In step S6, ifWithTwo formula are all It is false, then can controls sample tray and insert the location hole adjacent with the location hole, then jumps to step S3 to beef sample Product re-start detection.

Step S2 is comprised the following steps：

S21：The work of electromagnet of central processing unit controls first, sample tray is arrived by the first electromagnet suction action At rectangular recess anteromedial surface, the first proximity switch sends trigger；

S22：CPU receives the trigger that the first proximity switch sends, and the first electric magnet of control stops work Make, the 3rd work of electromagnet of the nearest location hole bottom of command range rectangular recess anteromedial surface, the 3rd electric magnet produces suction Power, the positioning head of sample tray bottom is inserted the location hole by the suction of the 3rd electric magnet, and second in the location hole connects Nearly switch sends trigger；

S23：CPU receives the trigger that the second proximity switch sends, and judgement sample pallet is positioned to Work(, now the central point of sample tray is positioned at the underface of optical transceiver；

S24：CPU reads user and determines that sample tray needs determining for insertion by the instruction that touch screen is input into Position hole site；

S25：Threeth electric magnet of the central processing unit controls apart from the nearest location hole bottom of rectangular recess anteromedial surface Quit work, sample tray is floated by buoyancy, the positioning head of sample tray bottom leaves location hole；

S26：The electric magnet of central processing unit controls second and sample tray need the 3rd of the location hole bottom of insertion Work of electromagnet, sample tray is moved to the location hole top for needing insertion, sample tray bottom by the effect of the second electromagnet suction The positioning head in portion is inserted the location hole by the effect of the 3rd electromagnet suction, and the second proximity switch in the location hole sends triggering letter Number.Photographic head gathers the image information of rectangular recess, and is sent to CPU, and CPU passes through image procossing The positional information of sample tray is obtained, if sample tray is moved rearwards by excessively by the effect of the second electromagnet suction, moving to needs The rear of the location hole to be inserted, CPU adjusts the position of sample tray by the first electric magnet and the second electric magnet Put, make sample tray be maintained at the surface of the location hole for needing insertion.

In the present embodiment, QE is met through detection_jNumber M of≤2% signal to noise ratio eigenvalue₁=11, statistics meets QE_jThe number of the signal to noise ratio eigenvalue of ＞ 2% is M₂=1,Judge that beef sample is not splicing beef.

Claims (7)

1. It is 1. a kind of to splice beef detecting system, it is characterised in that：Including controller and testing agency, the controller includes central authorities Processing unit (1), touch screen (2) and light source control module (3), the testing agency includes base (4), on the base (4) Monitor station (5) is provided with, monitor station (5) middle part is provided with rectangular recess (6), the rectangular recess (6) and stores liquid, institute State liquid and be provided with rounded sample tray (7), the front-end and back-end of the sample tray (7) are respectively equipped with the first permanent magnet With the second permanent magnet, sample tray (7) bottom is provided with locating dowel (10), and locating dowel (10) bottom is provided with positioning head (11), the positioning head (11) is made up of ferrimagnet, and the anteromedial surface of the rectangular recess (6) is provided with the first electric magnet (12) and the first proximity switch (18), the rear medial surface of the rectangular recess (6) is provided with the second electric magnet (13), and the rectangle is recessed The bottom surface of groove (6) is provided with several locating pieces (14), and locating piece (14) lower section is provided with drive locating piece (14) to rotate the One motor (15), the locating piece (14) is provided with and coordinate with positioning head (11) and limit what positioning head (11) was freely rotated Location hole (16), the location hole (16) on described several locating pieces (14) is arranged in a linear from front to back, the location hole (16) bottom is provided with the 3rd electric magnet (17) and the second proximity switch (33), and sample tray (7) top is provided with optical transceiver (19), the optical transceiver (19) includes radiation source (20) and optical receiver (21), the CPU (1) respectively with Touch screen (2), light source control module (3), the first electric magnet (12), the second electric magnet (13), the 3rd electric magnet (17), first connect Nearly switch (18), the second proximity switch (33), the first motor (15) and optical receiver (21) electrical connection, the light source control Module (3) is also electrically connected with radiation source (20).
2. 2. one kind according to claim 1 splices beef detecting system, it is characterised in that：The positioning head (11) is in flat Shape, the longitudinal section of the positioning head (11) is in inverted isosceles trapezoid, shape and the positioning head (11) of the location hole (16) Form fit, location hole (16) top is provided with inclined spigot surface (23).
3. 3. one kind according to claim 1 splices beef detecting system, it is characterised in that：Rectangular recess (6) left and right The distance between medial wall matches with the diameter of sample tray (7).
4. 4. the one kind according to claim 1 or 2 or 3 splices beef detecting system, it is characterised in that：The light source control mould Block (3) includes the digital capture cards of NI (24) and power amplifier (25), and the input of the digital capture card (24) of the NI is with Central Processing Unit (1) is electrically connected, and the outfan of the digital capture card (24) of the NI is electrically connected with the input of power amplifier (25) Connect, the outfan of the power amplifier (25) is electrically connected with radiation source (20).
5. 5. the one kind according to claim 1 or 2 or 3 splices beef detecting system, it is characterised in that：The rectangular recess (6) on bottom surface apart from the nearest location hole (16) of rectangular recess (6) anteromedial surface positioned at optical transceiver (19) underface.
6. 6. it is a kind of to splice beef detection method, it is characterised in that to comprise the following steps：

   S1：Lamellar beef sample is prepared, beef sample is placed on sample tray, make beef sample be centrally located at sample carrier The center of disk；

   S2：The instruction that CPU is input into according to user by touch screen, what control sample tray insertion user specified determines Position hole；

   S3：CPU is radiated at beef by the detection light that light source control module control radiation source sends certain light intensity On sample, detection light intensity then drops to 0, light from maximum first from 0 according to ramping to maximum according to straight line Receptor collection reflected spectrum data Spect (t), then the location hole place of central processing unit controls sample tray insertion is fixed The first motor work below the block of position, the first motor control locating piece rotates 30 degree, horizontally rotates sample tray 30 degree, optical receiver gathers the spectroscopic data of now radiation source point of irradiation, and so control sample tray horizontally rotates 360 degree, 30 degree of spectroscopic datas of detection that stop often are horizontally rotated, so as to the spectroscopic data for gathering 12 diverse locations on beef sample Spect(t)；

   S4：Collect 12 spectroscopic datas Spect (t) are carried out same data processing by CPU, are calculated 12 signal to noise ratio eigenvalues, comprise the following steps to the data processing that each spectroscopic data Spect (t) is carried out：

   Using input signalAs input matrix, potential function V (x, t, α) with Input signal collaboration is one layer of accidental resonance model：

   Wherein, V (x, t, α) is potential function, and x (t) is Brownian Particles movement locus function, and t is movement time, For periodic sinusoidal signal, N (t) grasps noise for interior, and A is signal amplitude, and f is signal frequency, and D is outer noise intensity, and ξ (t) is Outer noise,For phase place, α is acceleration of motion,

   First derivatives of the V (x, t, α) for x (t), second dervative and three order derivatives are calculated, and makes equation be equal to 0, obtain two Layer accidental resonance model：

   Setting noise intensity D=0,Spect (t)=0, N (t)=0, the marginal value for being calculated A is A_c =4a³/(27b²α⁸), by A_cIn substituting into one layer of accidental resonance model, and set x₀(t)=0, sn₀=0, using quadravalence jade for asking rain lattice storehouse One layer of accidental resonance model of tower Algorithm for Solving, obtains：

   $x_{n+1}\left(t\right)=x_n\left(t\right)+1/6\[{\left(k_1\right)}_n+(2-\sqrt{2}){\left(k_2\right)}_n+(2+\sqrt{2}){\left(k_3\right)}_n+{\left(k_4\right)}_n\],$

   N=0,1 ..., N-1 (3)

   Wherein, undetermined coefficient：

   (k₁)_n=a (α x_n-1(t))²-b(αx_n-1(t))³+sn_n-1 (4)

   ${\left(k_2\right)}_n=a\left({\mathrm{\αx}}_{n-1}\right(t)+\frac{{\left(k_1\right)}_{n-1}}{3})-b{\left({\mathrm{\αx}}_{n-1}\right(t)+\frac{{\left(k_1\right)}_{n-1}}{3})}^3+{\mathrm{sn}}_{n-1}---\left(5\right)$

   ${\left(k_3\right)}_n=a\left({\mathrm{\αx}}_{n-1}\right(t)+\frac{{\left(k_2\right)}_{n-1}}{3})-b{\left({\mathrm{\αx}}_{n-1}\right(t)+\frac{\sqrt{2}-1}{3}{\left(k_1\right)}_{n-1}+\frac{2-\sqrt{2}}{3}{\left(k_2\right)}_{n-1})}^3+{\mathrm{sn}}_{n+1}---\left(6\right)$

   ${\left(k_4\right)}_n=a\left(3{\mathrm{\αx}}_{n-1}\right(t)+{\left(k_3\right)}_{n-1})-b{\left({\mathrm{\αx}}_{n-1}\right(t)-\frac{\sqrt{2}}{3}{\left(k_2\right)}_{n-1}+\frac{2+\sqrt{2}}{3}{\left(k_3\right)}_{n-1})}^3+{\mathrm{sn}}_{n+1}---\left(7\right)$

   Wherein, x_n(t) for x (t) n order derivatives, sn_nIt is value of the n order derivatives of S (t) at t=0, a, b are the constant of setting,

   It is calculated x₁(t), x₂(t)…x_n+1The value of (t), to x₁(t), x₂(t)…x_n+1T () is integrated and obtains x (t), and The resonance moment is produced to x (t) in the double-deck stochastic resonance system of one layer of accidental resonance model and two layers of accidental resonance model composition Position x_mValue and x_mMoment t1 corresponding with t1 acceleration of motion α 1 of corresponding resonance and the noise corresponding with t1 D1, D1 are a value in D,

   By formulaIt is calculated signal to noise ratio eigenvalue SNR_Feature, wherein, Δ U=a²/4b；

   S5：Calculate 12 signal to noise ratio eigenvalues are divided into into four groups, by SNR_{Feature 3}、SNR_{Feature 6}、SNR_{Feature 9}、SNR_{Feature 12}It is divided into One group, by SNR_{Feature 2}、SNR_{Feature 4}、SNR_{Feature 7}、SNR_{Feature 11}It is divided into second group, by SNR_{Feature 1}And SNR_{Feature 5}It is divided into the 3rd group, will SNR_{Feature 8}And SNR_{Feature 10}It is divided into the 4th group, and the signal to noise ratio meansigma methodss of calculating each group respectively, obtains SNR_{Average 1}、SNR_{Average 2}、 SNR_{Average 3}、SNR_{Average 4},

   Calculate error QE between each signal to noise ratio eigenvalue and the signal to noise ratio meansigma methodss of the group corresponding to it_j, j=1 ..., 12；

   Statistics meets QE_jNumber M of≤2% signal to noise ratio eigenvalue₁, count and meet QE_jThe signal to noise ratio eigenvalue of ＞ 2% Number M₂；

   S6：IfThen CPU judges that the beef sample is not splicing beef, if Then CPU judges that the beef sample is splicing beef, otherwise jumps to step S3, and inspection is re-started to beef sample Survey.
7. 7. one kind according to claim 6 splices beef detection method, it is characterised in that step S2 includes following step Suddenly：

   S21：The work of electromagnet of central processing unit controls first, sample tray is by the first electromagnet suction action to rectangle At groove anteromedial surface, the first proximity switch sends trigger；

   S22：CPU receives the trigger that the first proximity switch sends, and the first electric magnet of control quits work, 3rd work of electromagnet of the nearest location hole bottom of command range rectangular recess anteromedial surface, the 3rd electric magnet produces suction, The positioning head of sample tray bottom is inserted the location hole by the suction of the 3rd electric magnet, and second in the location hole is close to and opens Pass sends trigger；

   S23：CPU receives the trigger that the second proximity switch sends, and judgement sample pallet is positioned successfully, this When sample tray central point be located at optical transceiver underface；

   S24：CPU reads user and determines that sample tray needs the location hole of insertion by the instruction that touch screen is input into Position；

   S25：Threeth electric magnet of the central processing unit controls apart from the nearest location hole bottom of rectangular recess anteromedial surface stops Work, sample tray is floated by buoyancy, and the positioning head of sample tray bottom leaves location hole；

   S26：The electric magnet of central processing unit controls second and sample tray need the 3rd electromagnetism of the location hole bottom of insertion Ironworker makees, and the positioning head of sample tray bottom inserts the location hole, and the second proximity switch in the location hole sends trigger.