CN104374704B - A kind of identifying meat freshness device and method - Google Patents
A kind of identifying meat freshness device and method Download PDFInfo
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- CN104374704B CN104374704B CN201410404942.6A CN201410404942A CN104374704B CN 104374704 B CN104374704 B CN 104374704B CN 201410404942 A CN201410404942 A CN 201410404942A CN 104374704 B CN104374704 B CN 104374704B
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Abstract
The present invention relates to a kind of identifying meat freshness device and method.Solve subjective inaccuracy to identifying meat freshness in the prior art be present, and the problem of detection device detection process complexity be present.Device includes pedestal, and floating pond is provided with pedestal, and being floated in floating pond has pallet, and pallet is moved by Magnetic Control, and adjustment support is provided with above pedestal, adjusts and is provided with radiation source on support, control unit is additionally provided with pedestal.Control unit judges freshness of meat by analyzing sample reflectance spectrum data.It is an advantage of the invention that using spectroscopic way, Non-Destructive Testing can be carried out to sample；Apparatus structure is reasonable, and pedestal moving resistance is small, will not get stuck, and operation and maintenance is convenient, and detection data are accurate.
Description
Technical field
The present invention relates to a kind of field of food detection, more particularly, to a kind of resistance it is small, do not get stuck, it is simple to operate it is quick,
Detect accurate identifying meat freshness device, and the detection method of the device.
Background technology
Consumption of meat is always an important component of food consumption, in recent years, the transformation of people's philosophy of life, is good for
Kang Yishi constantly strengthens, and the quality and sanitary condition to meat product require more and more stricter, the safety of meat product, concerns old
The life security and social stability of the common people, control meat product quality just become more and more important in daily life.It is right at present
The detection technique of freshness of meat has organoleptic detection, Physico-chemical tests etc..Organoleptic detection often by evaluate expert experience, psychology with
The influence of the factors such as physiology, different teacher of the evaluating is because its hobby, mood, sex and sensory acuity etc. influence, Ke Nengnan
To obtain consistent evaluation result, therefore the accuracy of evaluation result is often difficult to ensure that.Physico-chemical tests need a series of equipment
Completed with device, process is complicated, detection time length, and equipment is also complicated.There are some scholars to develop gas phase in recent years in addition
Chromatographic detection method, although detection sensitivity is also fine, this detection method damages.It is desirable to have one kind fast
The device and method of fast, easy, the accurate cold fresh freshness of meat of Non-Destructive Testing, to be carried out in an orderly manner to the meat of storage in time
Detection, to ensure the safety of meat product.Also there are some detection devices at present, the knot of these detection device example platforms movement at present
Structure is made up of mechanical structures such as slide rail or gears, and it is larger resistance to be present, complicated, and is also easy to get stuck, and it is inconvenient to safeguard
The problem of.
The content of the invention
The present invention mainly solution is inaccurate in the presence of subjectivity to identifying meat freshness in the prior art, and exists and detect
The problem of device detection procedure complexity, there is provided one kind is simple in construction, operation is fast and convenient, the accurate freshness of meat inspection of detection
Survey device.
Another goal of the invention of the invention is that solve general detection device example platform moving structure to use slide rail or tooth
The mechanical structures such as wheel, it is larger resistance to be present, complicated, easily gets stuck, safeguards the problem of inconvenient, there is provided a kind of resistance
It is small, do not get stuck, identifying meat freshness device simple to operate.
Present invention also offers one kind to operate fast and convenient, the accurate identifying meat freshness method of detection.
The above-mentioned technical problem of the present invention is mainly what is be addressed by following technical proposals：A kind of freshness of meat inspection
Device, including pedestal are surveyed, floating pond is provided with pedestal, liquid is provided with floating pond, being floated in floating pond has the circle for placing sample
Shape pallet, a pair of permanent magnets are provided with tray edge, electromagnet one is respectively arranged with Fu Chi both ends, at the bottom of pallet
Locating rod is provided with portion, the positioning for being disposed with several and locating rod spline fitted along axis in floating bottom of pond portion is revolved
Switch block, the electromagnet two of absorption locating rod is provided with the bottom of position rotating block, each position rotating block linkage is connected, in pedestal
Top is provided with adjustment support, adjusts and is provided with radiation source on support, and radiation source is located at the top of pallet, is present in vivo also
It is provided with control unit, control unit and radiation source, adjustment support, electromagnet one, electromagnet two, position rotating block control phase
Even；
Radiation source：Light beam is detected to electromagnetic radiation, and the reflected light information on sample can be received, it is single to feed back to control
Member；
Control unit：Radiation source, adjustment support, electromagnet one, electromagnet two, the work of position rotating block are controlled, according to
The spectral information of radiation source feedback, sample signal to noise ratio is calculated by accidental resonance analysis, and with being drawn after tables of data
Sample freshness information.
The present invention can control pallet accurately to be moved and rotated so that device can carry out multi-party to sample on pallet
The detection of position.Pallet uses floating form, and is moved by Magnetic Control.And the structure of conventionally employed Mechanical Moving, such as slide
Mechanism, it needs to set laterally with vertical carriage, and structure is more complicated, and mechanical structure resistance in movement is big, and
And the problem of easily getting stuck, it is also inconvenient to safeguard.Compared to the structure of tradition machinery movement, instant invention overcomes these to lack
Falling into, floating reduces the resistance of moving belt, and need not set carriage, and structure is simpler, the problem of it also avoid getting stuck,
Movement is controlled by electromagnet absorption, it is simple to operate.Each position rotating block is carried out by electromagnet two to locating rod
Absorption, can accurately control pallet displacement, and position rotating block can be rotated, and drive locating rod that pallet is rotated, make
Obtaining radiation source can be comprehensive to being sampled on sample.Adjusting bracket can adjust the position of radiation source.On pedestal
The control button that control is advanced, retreats and rotated is provided with, control unit controls a pair of pallets of electromagnet to enter according to control button
Row absorption movement, the block rotation of control position rotating rotate to pallet, and control unit controls radiation source to work simultaneously, irradiation
The information detected is sent to control unit by light source, and control unit carries out analysis calculating to information, and go out snr value,
Each freshness criteria Value Data table of pre-set meat is also stored with control unit, passes through the signal to noise ratio with being calculated
Sample freshness is drawn after value.Radiation source uses Halogen lamp LED or generating laser.During work, operating personnel are by pressing
Control button is operated, and electromagnet one and electromagnet two work, the permanent magnet on the adsorbing tray of electromagnet one, promotes pallet to exist
Moved in floating pond, when locating rod is moved to above one of position rotating block, under the magnetic-adsorption of electromagnet two, positioning
Bar is inhaled into position rotating block and is engaged with position rotating block, and stepper motor rotation drives position rotating block to rotate, and enters
And drive pallet to be rotated, turned an angle stopping, and radiation source is checked, continues to rotate after inspection, until rotation
Electromagnet two is stopped after 360 degree, and magnetic force disappears, and pallet moves up in the presence of buoyancy, and locating rod departs from position rotating
Block, the advance of operational control button control pallet or pusher are next proceeded to, repeats operation above.
As a kind of preferred scheme, the floating pond is rectangle, and the width in floating pond is more than or equal to pallet diameter length, floats
The length in pond is more than or equal to the length of 1.5 times of pallet diameter, and the permanent magnet is separately positioned on the both ends of the same diameter of pallet
Place, described two electromagnets one set on the same line and are arranged on the centre position at Fu Chi both ends.The width in the floating pond with
Pallet is equal or slightly wider, and such pallet will not carry out horizontal movement in floating pond, be carried out under the absorption of electromagnet one
Front and rear linear motion.The length in floating pond is equal or slightly larger than 1.5 times of pallet diameter, and pallet movement is without departing from going out irradiation light
Source range of exposures.Permanent magnet is symmetricly set at both ends, corresponding with the electromagnet one at Fu Chi both ends, a pair of permanent magnets of electromagnet
Adsorbed or promoted, moved pallet and move.
As a kind of preferred scheme, the locating rod is arranged on tray bottom downwards, and the front end of locating rod, which has, determines
Position key, positioning key include four positioning strips, and positioning strip is configured to cross, and the relative positioning strip length of one pair of which is more than separately
A pair of relative positioning strip length, positioning strip surface are skewed so that the structure at tip, the positioning is integrally formed in positioning key
The locating slot with positioning key complementary fit is provided with spill spin block.Locating rod is matched somebody with somebody under the absorption of electromagnet two with position rotating block
Close connection so that position rotating block can drive locating rod to rotate.The positioning key is different using anterior-posterior length and left and right length
Structure, define the position of locating rod insertion position rotating block, i.e., after locating rod inserts each position rotating block, on pallet
Permanent magnet is located on the direction alignd with electromagnet one, and so permanent magnet is also to maintain with electromagnet after 360 degree of rotations terminate
On the same line, without carrying out position adjustments to permanent magnet, it is easy to a pair of permanent magnets of electromagnet to continue absorption movement.
As a kind of preferred scheme, rotary shaft is provided with the position rotating block bottom, waterproof is connected with rotary shaft
Sealed bearings, waterproof sealing bearing are arranged in floating bottom of pond portion, and travelling gear, all positioning are connected with the front end of rotary shaft
The travelling gear of groove is linked by cingulum to be connected, and the rotary shaft of one of position rotating block is connected with stepper motor.Positioning
Spill spin block is connected by waterproof sealing bearing, it is therefore prevented that fluid seepage.The travelling gear of position rotating block is joined by transmitting cingulum
It is dynamic to be connected, linkage structure is formd, a stepper motor only need to be set with regard to all position rotating blocks can be driven to be rotated.
As a kind of preferred scheme, the adjustment support includes first body of rod, second body of rod, rotary screw and guide rod,
First body of rod is vertically arranged, and the radiation source is connected to by rotating shaft on the lower end of first body of rod, and rotating shaft is with driving its rotation
The first motor be connected, the first body of rod upper end is through on clutch shaft bearing, is provided with the second motor on clutch shaft bearing top, second
Motor output shaft is connected with the first body of rod upper end, and the perpendicular setting of second body of rod and first body of rod, the second lever front end is consolidated
It is scheduled on clutch shaft bearing, thread bush and guide sleeve is disposed with the second body of rod rear end, the rotary screw and guide rod are simultaneously
Row is arranged on pedestal, and thread bush and guide sleeve are nested with rotary screw and guide rod respectively, is connected in rotary screw lower end
There is the 3rd motor, the first motor, the second motor are connected in control unit.Adjustment support can adjust radiation source position
Put.Before starting the work by adjusting support by radiation source position adjustment to desired position, can be compareed by the first motor
Penetrate light source to be rotated, the incident angle that can be adjusted.Rotation regulation is carried out to first body of rod by the second motor driving energy, led to
The 3rd motor driving rotary screw is crossed, the position of second body of rod in vertical direction, the i.e. height to radiation source can be adjusted
It is adjusted.
A kind of identifying meat freshness method, comprises the following steps：
Step 1：The volatile base values of nitrogen might of different resting period meat samples is detected in advance, is obtained and some groups and irradiation
Freshness of meat threshold value corresponding to light source position；
Step 2：Meat sample is prepared, sample is placed on bracket, radiation source position is adjusted, starter, moves
Dynamic pallet detects, afterwards one angle of rotary-tray at rotational positioning groove location to the test point of radiation source irradiation
Another test point is detected afterwards, after pallet is rotated by 360 °, then controls pallet to proceed to next rotational positioning groove
Place repeats above-mentioned detection, and radiation source intensity increases and then pressed according to tangent cutve in irradiation process on each test point
Decline according to sine curve and change, control unit collection reflected spectrum data；
Step 3：Each test point spectroscopic data is substituted into accidental resonance model, by one layer of accidental resonance model
Single order, second order, three rank derivations are carried out, obtain two layers of accidental resonance model, and one layer of accidental resonance model is passed through into quadravalence jade for asking rain lattice
Storehouse tower algorithm, calculate each test point signal to noise ratio output valve；
Step 4：By each test point signal to noise ratio output valve compared with the threshold value set, judge test point for white light
Spectrum or red spectrum, then dialogue color spectrum and the test point of red spectrum counted, the quality of judgement sample.
As a kind of preferred scheme, each spectroscopic data of collection is substituted into accidental resonance model respectively in step 2, its
Formula is as follows,
WhereinFor input matrix, including periodic sinusoidal signalSpectroscopy signal Spect (t), and it is interior grasp noise N (t), A is signal amplitude, and f is signal frequency
Rate, D are outer noise intensities, and ξ (t) is outer noise, and x (t) is Brownian movement Particles Moving lopcus function, and t is run duration；
One layer of accidental resonance model V (x, t, α) is calculated for x (t) single order, second order and three order derivatives, and causes its etc.
Formula is 0, obtains two layers of accidental resonance model,
Noise intensity D=0 is set,Spect (t)=0, N (t)=0, A critical value is calculated
ForBy AcSubstitute into one layer of accidental resonance model, and set x0(t)=0, sn0=0, using quadravalence jade for asking rain lattice
One layer of accidental resonance model of storehouse tower Algorithm for Solving, is obtained：
Wherein, undetermined coefficient：
k1=h (a (α xn)2-b(αxn)3+snn)
Wherein, xnFor x (t) n order derivatives, snnIt is value of S (t) the n order derivatives at t=0, a, b are bistable situation letter
Number system number, h are the calculating step numbers of setting,
To x1(t),x2(t),…,xn+1(t) integrated, obtain x (t), and obtain x (t) in single order and second order derivation letter
Array into double-deck stochastic system produce the accidental resonance moment position xmValue and xmCorresponding resonance moment t1 and with t1 institutes
Corresponding noise D1, D1 are a value in D；
Then formula is passed through
The signal to noise ratio of each spectroscopic data output is calculated, obtains each test point signal to noise ratio output valve, wherein △ U=a2/4b.
In Practical Project measurement, the data of measurement generally comprise echo signal and interference noise, if echo signal is by strong background noise
Covered, we can not accurately detect.With the help of accidental resonance, inside grasp that noise is weakened and echo signal is faint
Signal is then effectively amplified so that echo signal is possible to be caught in.Sometimes because echo signal is excessively faint and background
Noise is too strong, and individual layer accidental resonance can not effectively reduce system noise, therefore just needs to export individual layer accidental resonance and believe
Number it is sent in next floor stochastic resonance system and is analyzed again, so can finally realizes the mesh of Target Weak Signal measurement
's.
As a kind of preferred scheme, each test point output signal-to-noise ratio error is by each test point output signal-to-noise ratio in step 4
Calculated with the freshness threshold of corresponding test point, its formula isStatistics
Process meet QE for calculatingiThe number of≤5% output signal-to-noise ratio error, is designated as M1, calculate and meet QEi>5% output letter
The number for ratio error of making an uproar, is designated as M2IfThe fresh judgement of sample is then made, ifThen make sample
The stale judgement of product, if all otherwise return to step two detects and carries out data processing again to sample.
As a kind of preferred scheme, the detection process of freshness of meat threshold value is：The volatility of meat of detection daily
Alkali nitrogen numerical value, until the VBN numerical value of certain day sample is exceeded for the first time, then this day sample is subjected to step 2 extremely
The operation of step 3, obtained signal to noise ratio output is freshness threshold.
Therefore, it is an advantage of the invention that：Using spectroscopic way, Non-Destructive Testing can be carried out to sample；Apparatus structure closes
Reason, pedestal moving resistance is small, will not get stuck, and operation and maintenance is convenient, and detection data are accurate.
Brief description of the drawings
Accompanying drawing 1 is a kind of structural representation of the present invention；
Accompanying drawing 2 is a kind of perspective structure perspective diagram of pedestal in the present invention；
Accompanying drawing 3 is the structure enlargement diagram at A in accompanying drawing 1；
Accompanying drawing 4 is a kind of overlooking the structure diagram of positioning key in the present invention；
Accompanying drawing 5 is a kind of circuit block diagram of the control section of the present invention；
Accompanying drawing 6 is a kind of schematic flow sheet of method in the present invention；
Accompanying drawing 7 is radiation source conversion curve figure in the present invention.
1- pedestals 2- floats the 6- permanent magnet 7- locating rods 8- of pond 3- pallet 4- radiation source 5- electromagnets one positioning rotations
The 13- travelling gear 14- rotary shafts 15- of switch block 9- positioning key 10- locating slot 11- waterproof sealing bearing 12- permanent magnets two
Stepper motor 16- positioning strips 17- adjusts support 18- first body of rod 19- second body of rod 20- rotary screw 21- guide rods
The motor 27- bearing 28- control units of 22- thread bush 23- guide sleeves 24- the first motor the second motors of 25- 26- the 3rd
29- rotating shaft 30- cingulums
Embodiment
Below by embodiment, and with reference to accompanying drawing, technical scheme is described in further detail.
Embodiment：
A kind of identifying meat freshness device of the present embodiment, as depicted in figs. 1 and 2, including pedestal 1, set on pedestal
There is floating pond 2, the floating pond is a square cell body, is provided with liquid in floating pond, the liquid is water or heavy oil.Float and put in floating pond
The pallet 3 of sample is put, pallet is circle, and the length for floating pond is 1.5 times of pallet diameter, floats the width and pallet diameter one in pond
Sample, such pallet are just embedded in floating pond, and can only be moved along floating pond length direction, are moved for the ease of pallet in floating pond
Dynamic, the length and width in floating pond, which has, a little to be increased.A pair of permanent magnets 6 are provided with tray edge, this is set to permanent magnet
At the both ends of the same diameter of pallet.Electromagnet 1 is respectively arranged with Fu Chi both ends, control electromagnetism is provided with pedestal
The control button of body one, these control buttons include forward key, Reverse keys, locating rod absorption button, rotating key, can
To control the electromagnetic force of Fu Chi both ends electromagnet one, pass through the absorption to permanent magnet on pallet so that pallet moves.Seat
Control unit 26 is provided with vivo, and each control button distribution is connected with control unit input, electromagnet one and control unit 28
Output end connects.
Locating rod 7 is provided with the bottom of pallet, several are disposed with determining along axis in floating bottom of pond portion
The position rotating block 8 of position bar spline fitted, position rotating block is a circular block shape, and circular groove, position rotating are provided with floating bottom of pond portion
Block is embedded in circular groove.In the present embodiment exemplified by five position rotating blocks are set, five position rotating block uniform intervals arrangements.
Positioning key 9 is provided with the front end of locating rod, as shown in figure 4, the positioning key includes four positioning strips 16, positioning strip is configured to
Cross, and the relative positioning strip length of one pair of which is more than the relative positioning strip length of another pair, positioning strip surface is tilts
Shape so that the structure at tip is integrally formed in positioning key.The positioning being engaged with positioning key is provided with position rotating block surface
Groove 10.As shown in figure 3, position rotating block bottom is provided with rotary shaft 14, waterproof sealing bearing 11, waterproof sealing are cased with rotary shaft
Bearing is arranged on rotary shaft root, and the sealing of waterproof sealing bearing is fixed in the circular groove in floating bottom of pond portion.Under position rotating block
Side is provided with electromagnet 2 12, travelling gear 13 is equipped with the front end of rotary shaft, the travelling gear of each position rotating block leads to
Cross cingulum linkage to be connected, form a transmission mechanism, the rotary shaft that the position rotating block of low order end is located in Fig. 2 is also electric with stepping
The axle of machine 15 is connected, as shown in figure 5, stepper motor, electromagnet two, the controlled connection of electromagnet one are in control unit 28.
As shown in figure 1, being floated in pedestal adjusting bracket 17 is installed at the right positions in pond, the adjusting bracket includes first
The body of rod 18, second body of rod 19, rotary screw 20 and guide rod 21, first body of rod are vertically arranged, and are led on the front end of first body of rod
Cross rotating shaft 27 and be provided with radiation source 4, rotating shaft is connected with the first motor 24 for driving it to rotate.First body of rod upper end is through
On bearing 29, the second motor 25 is provided with bearing top, the second motor output shaft is connected with the first body of rod upper end, second body of rod
With the perpendicular setting of first body of rod, the second lever front end is fixed on clutch shaft bearing, and spiral shell is disposed with the second body of rod rear end
Line set 22 and guide sleeve 23, rotary screw and guide rod are vertically arranged on pedestal 1 side by side, and thread bush and guide sleeve are nested with respectively
On rotary screw and guide rod, the 3rd motor 26 is connected with rotary screw lower end.As shown in figure 5, stepper motor, the first electricity
Machine, the second motor, the 3rd motor are connected in control unit, and work is controlled by control unit.
When being operated to device, its operating process is：
The meat sample made is placed on pallet, pallet is moved to the position of the Fu Chi rightmost sides in most Fig. 2, is adjusted
The position of whole radiation source so that radiation source is located at tray center.Then starter.Advance control button is pressed, electricity
Magnet works at the beginning, and the absorption affinity of electromagnet one positioned at left side is more than the absorption affinity of electromagnet one on right side, so that pallet
Move toward left side, when the locating rod of tray bottom is moved to above first position rotating block, press advance control by
During key, electromagnet two is worked, and now just adsorbs locating rod downwards, and the positioning key on locating rod front end is snapped onto in locating slot,
After cooperation, rotating control key, control unit control stepper motor work are pressed, step motor control pallet rotates one
Angle, such as it is set as 30 degree, stops after rotating through 30 degree, control unit controls radiation source to the test point on sample now
Detected, after detection, continue to revolve through 30 degree, then detected, so repeatedly until pallet have rotated 360 degree, rotation
Stop.Then proceed to press advance control button, repeat above-mentioned operation, until pallet proceeds to last position rotating block
Opening position.These processes are that operating personnel are manually operated, can also be provided with and be automatically brought into operation button, this is automatically brought into operation button and pressed
Afterwards, device will be operated according to above-mentioned process and performed one time automatically, complete detection.Data Collection is to control unit after the completion of detection
It is interior, data are handled by control unit, finally obtained a result.
As shown in fig. 6, give entirely to the method and step of identifying meat freshness, including：
Step 1：The volatile base values of nitrogen might of different resting period meat samples is detected in advance, is obtained and some groups and irradiation
Freshness of meat threshold value corresponding to light source position；It is specially the VBN TVB-N of meat of detection daily
Value, until the VBN numerical value of certain day sample is exceeded for the first time, then by this day sample follow the steps below in advance two to
The operation of step 3, the signal to noise ratio output SNR of each test point now obtainedthre1、SNRthre2、…、SNRthrei, i=
1 ... ... m, as freshness threshold, m are test point quantity.During detection, and according to devices above operating process progress.
Step 2：Meat sample is prepared, meat thickness of sample is 2mm-10mm, and the sample of 5mm thickness is used in the present embodiment
Product.Sample is placed on bracket, adjusts radiation source position, starter, operation is also to be operated according to said apparatus
Cheng Jinhang, and radiation source intensity increases and then according to sine in irradiation process according to tangent cutve on each test point
Curve declines change.Detection terminates rear control unit and collects all reflected spectrum datas.
Step 3：Each test point spectroscopic data is substituted into accidental resonance model, by one layer of accidental resonance model
Single order, second order, three rank derivations are carried out, obtain two layers of accidental resonance model, and one layer of accidental resonance model is passed through into quadravalence jade for asking rain lattice
Storehouse tower algorithm, calculate each test point signal to noise ratio output valve.Its detailed process is：
Each spectroscopic data of collection is substituted into accidental resonance model respectively, its formula is as follows,
WhereinFor input matrix, including periodic sinusoidal signalSpectroscopy signal Spect (t), and it is interior grasp noise N (t), A is signal amplitude, and f is signal frequency
Rate, D are outer noise intensities, and ξ (t) is outer noise, and x (t) is Brownian movement Particles Moving lopcus function, and t is run duration；
One layer of accidental resonance model V (x, t, α) is calculated for x (t) single order, second order and three order derivatives, and causes its etc.
Formula is 0, obtains two layers of accidental resonance model,
Noise intensity D=0 is set,Spect (t)=0, N (t)=0, A critical value is calculated
ForBy AcSubstitute into one layer of accidental resonance model, and set x0(t)=0, sn0=0, using quadravalence jade for asking rain lattice
One layer of accidental resonance model of storehouse tower Algorithm for Solving, is obtained：
Wherein, undetermined coefficient：
k1=h (a (α xn)2-b(αxn)3+snn)
Wherein, xnFor x (t) n order derivatives, snnIt is value of S (t) the n order derivatives at t=0, a, b are bistable situation letter
Number system number, h are the calculating step numbers of setting,
To x1(t),x2(t),…,xn+1(t) integrated, obtain x (t), and obtain x (t) in single order and second order derivation letter
Array into double-deck stochastic system produce the accidental resonance moment position xmValue and xmCorresponding resonance moment t1 and with t1 institutes
Corresponding noise D1, D1 are a value in D；
Then formula is passed through
The signal to noise ratio of each spectroscopic data output is calculated, obtains each test point signal to noise ratio output valve, wherein △ U=a2/4b。
Step 4：The corresponding freshness threshold of each test point signal to noise ratio output valve is compared and draws each test point
Signal to noise ratio output error value, statistic of classification then is carried out to each signal to noise ratio output error value, whether judgement sample is fresh.
It is the freshness threshold by each test point output signal-to-noise ratio with corresponding test point by each test point output signal-to-noise ratio error
Value is calculated, and its formula isThe process of statistics is that calculating meets QEi≤
The number of 5% output signal-to-noise ratio error, is designated as M1, calculate and meet QEi>The number of 5% output signal-to-noise ratio error, is designated as M2,
IfThe fresh judgement of sample is then made, ifThe stale judgement of sample is then made, if all no
Then return to step two detects and carries out data processing again to sample.
Specific embodiment described herein is only to spirit explanation for example of the invention.Technology belonging to the present invention is led
The technical staff in domain can be made various modifications or supplement to described specific embodiment or be replaced using similar mode
Generation, but without departing from the spiritual of the present invention or surmount scope defined in appended claims.
Although more having used pedestal, Fu Chi, pallet, radiation source, electromagnet first-class term herein, it is not precluded from
Use the possibility of other terms.It is used for the purpose of more easily describing and explaining the essence of the present invention using these terms；
They are construed to any additional limitation and all disagreed with spirit of the present invention.
Claims (5)
- A kind of 1. identifying meat freshness device, it is characterised in that：Including pedestal（1）, floating pond is provided with pedestal（2）, float Liquid is provided with pond, being floated in floating pond has the round tray for placing sample（3）, a pair of permanent magnets are provided with tray edge （6）, electromagnet one is respectively arranged with Fu Chi both ends（5）, locating rod is provided with the bottom of pallet（7）, in floating bottom of pond In portion several position rotating blocks with locating rod spline fitted are disposed with along axis（8）, under position rotating block Portion is provided with the electromagnet two of absorption locating rod, and each position rotating block linkage is connected, adjustment support is provided with above pedestal, is adjusted Radiation source is provided with whole support, radiation source is located at the top of pallet, present to be additionally provided with control unit in vivo（28）, control Unit processed is connected with radiation source, adjustment support, electromagnet one, electromagnet two, the control of position rotating block；Radiation source：Light beam is detected to electromagnetic radiation, and the reflected light information on sample can be received, feeds back to control unit；Control unit：Radiation source, adjustment support, electromagnet one, electromagnet two, the work of position rotating block are controlled, according to irradiation The spectral information of light source feedback, sample signal to noise ratio is calculated by accidental resonance analysis, and with drawing sample after tables of data Freshness information.
- A kind of 2. identifying meat freshness device according to claim 1, it is characterized in that the floating pond（2）For rectangle, The width in floating pond is more than or equal to pallet（3）Diameter length, the length for floating pond are more than or equal to the length of 1.5 times of pallet diameter, The permanent magnet（6）It is separately positioned at the both ends of the same diameter of pallet, described two electromagnets one are set on the same line And it is arranged on the centre position at Fu Chi both ends.
- A kind of 3. identifying meat freshness device according to claim 1, it is characterized in that the locating rod（7）Downwards It is arranged on pallet（3）Bottom, the front end of locating rod have positioning key（9）, positioning key includes four positioning strips（16）, positioning strip structure As cross, and the relative positioning strip length of one pair of which is more than the relative positioning strip length of another pair, and positioning strip surface is It is skewed so that the structure at tip, the position rotating block is integrally formed in positioning key（8）On be provided with and positioning key complementary fit Locating slot（10）.
- A kind of 4. identifying meat freshness device according to claim 1 or 3, it is characterized in that the position rotating block（8） Rotary shaft is provided with bottom（14）, waterproof sealing bearing is connected with rotary shaft（11）, waterproof sealing bearing, which is arranged on, floats pond （2）On bottom, travelling gear, the travelling gear of all locating slots are connected with the front end of rotary shaft（13）Pass through cingulum（30）Connection It is dynamic to be connected, and the rotary shaft and stepper motor of one of position rotating block（15）It is connected.
- A kind of 5. identifying meat freshness device according to claim 1 or 2 or 3, it is characterized in that the adjustment support （17）Including first body of rod（18）, second body of rod（19）, rotary screw（20）And guide rod（21）, first body of rod is vertically arranged, The radiation source（4）Pass through rotating shaft（29）It is connected on the lower end of first body of rod, rotating shaft is with driving the first motor that it is rotated It is connected, the first body of rod upper end is through bearing（27）On, bearing top is provided with the second motor（25）, the second motor output shaft It is connected with the first body of rod upper end, the perpendicular setting of second body of rod and first body of rod, the second lever front end is fixed on bearing, Thread bush is disposed with the second body of rod rear end（22）And guide sleeve（23）, the rotary screw and guide rod are disposed side by side on Pedestal（1）On, thread bush and guide sleeve are nested with rotary screw and guide rod respectively, and the 3rd is connected with rotary screw lower end Motor（26）, the first motor, the second motor, the 3rd motor are connected to control unit（28）On.
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| CN104374704B true CN104374704B (en) | 2017-11-17 |
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Effective date of registration: 20190419 Address after: 325000 Minxin Road, Wenzhou Agricultural High-tech Demonstration Zone, Zhejiang Province, No. 2 (3rd floor, 1 building) Patentee after: Wenzhou D.NUO Foods Co.,Ltd. Address before: 518000 Guangdong Province Shenzhen Nanshan District Xili Street Chaguang Road and Chuangke Road intersection of Botton Science Park B Vanke Yunchuang 20 stories 2001 Patentee before: WEIZHENG INTELLECTUAL PROPERTY SERVICES Ltd. Effective date of registration: 20190419 Address after: 518000 Guangdong Province Shenzhen Nanshan District Xili Street Chaguang Road and Chuangke Road intersection of Botton Science Park B Vanke Yunchuang 20 stories 2001 Patentee after: WEIZHENG INTELLECTUAL PROPERTY SERVICES Ltd. Address before: 310018 18 learning street, Xiasha Higher Education Park, Hangzhou, Zhejiang Patentee before: Zhejiang Gongshang University |
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Denomination of invention: Meat freshness detection device and detection method Effective date of registration: 20191209 Granted publication date: 20171117 Pledgee: Agricultural Bank of China Limited Wenzhou Ouhai sub branch Pledgor: Wenzhou D.NUO Foods Co.,Ltd. Registration number: Y2019330000273 |
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Date of cancellation: 20200929 Granted publication date: 20171117 Pledgee: Agricultural Bank of China Limited Wenzhou Ouhai sub branch Pledgor: Wenzhou D.NUO Foods Co.,Ltd. Registration number: Y2019330000273 |