CN104458880B - Maltose solution concentration detection apparatus and method - Google Patents
Maltose solution concentration detection apparatus and method Download PDFInfo
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- CN104458880B CN104458880B CN201410502399.3A CN201410502399A CN104458880B CN 104458880 B CN104458880 B CN 104458880B CN 201410502399 A CN201410502399 A CN 201410502399A CN 104458880 B CN104458880 B CN 104458880B
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Abstract
The present invention relates to a kind of maltose solution concentration detection apparatus and method.Concentration Testing precision is low, the problem of complex operation to sugar to solve apparatus and method of the prior art.Device includes controlling terminal and data collecting mechanism, data acquisition mechanism includes workbench, electrode spacing regulation platform, container, the first electrode and the second electrode, electrode spacing regulation platform connects on the table by elevating mechanism, involute shifting chute it is provided with on platform, being provided with motion on involute shifting chute medial wall, the second electrode mobile link is in shifting chute.By detecting current density value between two electrodes, substitute into second-order linear system accidental resonance model, be calculated signal to noise ratio eigenvalue, draw solution concentration according to concentration computing formula.It is an advantage of the invention that accuracy of detection is more preferable, apparatus structure is simple, convenient to operation, and repeatability is high.
Description
Technical field
The present invention relates to a kind of solution concentration detection technology, especially relate to the maltose that a kind of precision is high, simple to operate
Solution concentration detector and method.
Background technology
In various fields such as chemical industry, food and health cares, it is often necessary to the concentration of solution is detected.Existing sugar is dense
Degree detection technique has Instrumental Analysis detection method and chemical measure.Although Instrumental Analysis detection method is simple to operate, but there is inspection
Survey the defect that precision is low, and chemical measure exists complex operation, the problem of poor repeatability.
Summary of the invention
The present invention mainly solves apparatus and method of the prior art, and to sugar, Concentration Testing precision is low, complex operation is asked
Topic, it is provided that the maltose solution concentration detection apparatus that a kind of accuracy of detection is high, simple to operate, and use the detection of this device
Method.
The above-mentioned technical problem of the present invention is mainly addressed by following technical proposals: a kind of maltose solution is dense
Degree detection device, including controlling terminal and data collecting mechanism, described data acquisition mechanism includes that workbench, electrode spacing regulate
Platform, container, be arranged on electrode spacing regulation platform below the first electrode and the second electrode, described electrode spacing regulation platform
Connecting on the table by elevating mechanism, container is arranged on electrode regulating platform lower, sets on motor distance regulation platform
It is equipped with involute shifting chute, involute shifting chute medial wall is provided with the motion of movement in involute shifting chute,
Connecting first connecting rod on described first electrode, first connecting rod is rotated up being connected to center, involute shifting chute basic circle place,
And first connecting rod upper end is positioned at platform upper through platform, described second electrode connecting second connecting rod, second connecting rod upwards connects
It is connected on motion, and second connecting rod upper end is positioned at platform upper through platform, sets at first connecting rod and second connecting rod upper end
Being equipped with just to governor motion, be additionally provided with processing module in workbench, described first electrode, the second electrode are connected with processing module,
Processing module is connected with controlling terminal.It is computer that apparatus of the present invention control terminal, computer and the process mould in workbench
Block connects, and information is processed, controls each mechanism part work on workbench by receiving processing module, and the information sent is to control
Terminal processed, finally draws solution concentration value.Solution concentration is detected in extending into solution by the first electrode and the second motor, inspection
The data measured are sent to processing module.Motion can in involute shifting chute back and forth movement, the second electrode be connected to fortune
On motivation structure, the first electrode is rotatably connected on center, involute shifting chute basic circle place, and such motion drives the first electricity
During polar motion, can gradually regulate the relative distance between two electrodes.Just to governor motion for keeping two electrodes all the time
The most right.Apparatus of the present invention be automatically obtained to solution detect process, simple in construction, easy to operate.
As a kind of preferred version, described involute shifting chute includes work nest and lead-over groove, and work nest is along involute
The cell body run through up and down arranged, described lead-over groove is connected between work nest two ends gently, by whole involute shifting chute even
Being connected into an enclosed slot, described motion includes the limit guide rail being arranged on involute shifting chute medial wall, described spacing leads
Rail cross section is T-shaped, and in limit guide rail, engagement sleeves is equipped with mobile band, is provided with denticle, in transition on the outer surface of mobile band
Being additionally provided with motor-driven gear at groove, described gear is meshed with mobile belt surface denticle, is further fixed on the moving belt
Fixed cover, described fixed cover is located in work nest, and described second connecting rod is connected on fixed cover.Involute shifting chute is whole is
The cell body closed, mobile band is a circle, wraps on involute shifting chute medial wall, drives mobile Tape movement by pinion rotation,
Work nest is involute structure, and mobile Tape movement then fixed cover is that involute direction is moved, and i.e. makes the second electrode around the first electricity
Pole is moved with involute trend, gradually regulates the distance between two electrodes.
As a kind of preferred version, it is separately positioned on first connecting rod upper end and second connecting rod described just governor motion being included
The flat board of upper end, two flat boards are parallel and surface faces, and are fixed with an expansion link between two flat boards, and described expansion link is respectively
Vertical with two flat boards fix.Two flat boards are just relative, and expansion link two ends are fixed on the center of two flat boards, and this makes two flat boards protect all the time
It is the most right to hold.First connecting rod is for being rotatably connected on electrode spacing regulation platform, so when second body of rod is in involute shifting chute
Time mobile, under the drive of expansion link, first connecting rod rotates, and thus makes two electrodes the most right.
As a kind of preferred version, described lead-over groove is the cell body bottom band, and the width of lead-over groove is less than the width of work nest
Degree, is respectively formed with block body at lead-over groove two ends with work nest two ends connecting place.This lead-over groove is connected to work nest two ends gently,
Mobile band can be moved back and forth, and additionally fixed cover only moves in work nest, it is not necessary to moving in lead-over groove, lead-over groove only needs
Allow work strip pass through, and lead-over groove has bottom and so involute shifting chute interior section and exterior section is connected to one
Rising and become an entirety, work nest and transition different width of tubesheet hole groove form block body at the place of being connected to each other simultaneously, move at fixed cover
Fixed cover can be stoped during work nest termination to move forward.
As a kind of preferred version, also including rabbling mechanism, rabbling mechanism includes being arranged on the rotation in the middle of container bottom
Turntable, is provided with through hole in the middle of turntable, in through hole, sealing bearing is provided with spill spin block, be provided with rotation on spill spin block
Rotating vane sheet, is provided with splined hole bottom spill spin block, be provided with rotating driver, rotating driver in the workbench of lower vessel portion
Including motor, motor is connected with processing module, and the rotating shaft of motor is provided with spline, and spline exposes on table surface, institute
State spline to be inserted in splined hole.Rabbling mechanism is for being stirred solution in container.When container is placed on the table, hold
Bottom spill spin block bottom device, splined hole inserts on spline on the table.Spline and splined hole corresponding matching, such motor
Rotation just can drive the rotating vane in container to rotate, and plays stirring action.
As a kind of preferred version, described elevating mechanism includes vertically-mounted hydraulic stem on the table, hydraulic stem
Being fixed with adapter sleeve on mobile terminal, described electrode spacing regulation platform fixes with adapter sleeve.The hydraulic stem of elevating mechanism controls
Electrode spacing regulation platform moves up and down.
As a kind of preferred version, described first electrode is foam copper electrode, and described second electrode is platinum plate electrode.
A kind of maltose solution concentration detection method, uses the device in any one of claim 4-7, including following step
Rapid:
Step one: detection working electrode and the most qualified to electrode, if qualified, carry out next step, otherwise changes work
Make electrode and to electrode；
Step 2: the 0.1mol/L NaOH solution taking 25ml adds in container, rabbling mechanism operation duration agitating solution,
Processing module applies the constant voltage of+0.5V between the first electrode and the second electrode；
Step 3: the 0.1mol/L maltose solution taking 0.05ml adds in container, controls terminal and is examined by processing module
Survey electric current density, control terminal simultaneously and adjust second electrode position on involute shifting chute by motion, detect the
Two electrodes are positioned at electric current density during involute shifting chute diverse location, finally make the second electrode rest on the electric current of detection close
Degree is at maximum, and records the maltose concentration X of solution in current density value S (t) now and container；
Step 4: add in container at interval of the 0.1mol/L maltose solution taking 0.05ml for 50 seconds, controls terminal and passes through
Processing module detection primary current density, such cycle detection 9 times, and record current density value S (t) that detects each time and
The maltose concentration X of solution in corresponding container；
Step 5: control terminal and 10 current density values S (t) of detection are carried out same data process, calculate 10
Individual signal to noise ratio eigenvalue, the data carrying out each current density value S (t) process and comprise the following steps:
Substitute into second-order linear system accidental resonance model
In, and make second-order linear system accidental resonance model resonate,
Wherein, x (t) is the displacement of vibration particle, and Ω is angular frequency, r and ω is that the attenuation quotient set is with linear respectively
The frequency of vibration particle, c is the signal adjustment coefficient set, and b is the quadratic noise ξ set2T the coefficient of (), ξ (t) is three discriminations
Noise, {-a, 0, a}, a ＞ 0, the dismutation of noise follows Poisson distribution to ξ (t) ∈, and its probability distribution is ps(a)=ps(-a)
=q, ps(0)=1-2q, wherein 0 ＜ q ＜ 0.5,
Noise average and dependency follow<ξ (t)>=0,<ξ (t) ξ (t+ τ)>=2qa2e-λτ,
Wherein λ is correlation ratio, and the glacing flatness of three discriminations noise ξ (t) is
Utilize formulaIt is calculated signal to noise ratio eigenvalue SNRmax；
Step 6: according to 10 signal to noise ratio eigenvalue SNRmaxAnd the maltose concentration X of solution in 10 containers of correspondence
Linear fit obtains concentration computing formula: SNRmax=1.67544+1.70142x；
Step 7: cleaning container is clean, adds maltose solution to be measured in container, controls terminal and passes through processing module
Detection primary current density, substitutes into second-order linear system accidental resonance model by current density value S (t) of detection, is calculated
Signal to noise ratio eigenvalue SNRmax, by signal to noise ratio eigenvalue SNRmaxSubstitute into concentration computing formula: SNRmax=1.67544+
1.70142x, calculate the concentration of maltose solution.
As a kind of preferred version, step one is further comprising the steps of:
A. the 0.1mol/L NaOH solution taking 25ml adds in container and stirs, processing module at working electrode and
To between electrode apply voltage range be-0.2V-0.7V, the scanning voltage of scanning speed 0.05V/S be scanned, processing module
Detection electric current density, and send it to control terminal, control terminal and obtain current density maxima and electric current density minima,
And calculate difference A1 between current density maxima and electric current density minima；
B. cleaning container is clean, the 0.1mol/L maltose solution of the 0.1mol/LNaOH solution and 10ml that take 15ml adds
Entering in container and stir, electrochemical workstation applies voltage range between the first electrode and the second electrode for-0.2V-
0.7V, the scanning voltage of scanning speed 0.05V/S are scanned, processing module detection electric current density, and send it to control
Terminal, controls terminal and obtains current density maxima and electric current density minima, and calculate current density maxima and electric current
Difference A2 between density minima；
If C.Then control terminal judges working electrode and be qualified to electrode, ifThen control terminal judges working electrode or defective to electrode.
Therefore, the invention have the advantage that accuracy of detection is more preferable, apparatus structure is simple, convenient to operation, and repeatability is high.
Accompanying drawing explanation
Accompanying drawing 1 is a kind of structural representation of concentration detection apparatus of the present invention；
Accompanying drawing 2 is a kind of plan structure schematic diagram of electrode spacing regulation platform in the present invention；
Accompanying drawing 3 is a kind of sectional structure schematic diagram of position, involute shifting chute medial wall in the present invention；
Accompanying drawing 4 is front governor motion and a kind of easy structure schematic diagram of two electrode annexations in the present invention；
Accompanying drawing 5 is circuit connection structure schematic diagram of the present invention.
1-workbench 2-electrode spacing regulation platform 3-container 4-the first electrode 5-the second electrode 6-first
Connecting rod 7-second connecting rod 8-flat board 9-expansion link 10-involute shifting chute 11-work nest 12-lead-over groove
13-moves band 14-fixed cover 16-limit guide rail 17-denticle 18-processing module 19-and controls terminal 20-adapter sleeve
21-gear 22-block body 25-turntable 26-through hole 27-spill spin block 28-rotating vane 29-splined hole 30-flower
Key 31-rotating driver 32-hydraulic stem
Detailed description of the invention
Below by embodiment, and combine accompanying drawing, technical scheme is described in further detail.
Embodiment:
The present embodiment one maltose solution concentration detection apparatus, as it is shown in figure 1, include controlling terminal 19 and data acquisition
Mechanism, data acquisition mechanism includes workbench 1, electrode spacing regulation platform 2, container 3, is arranged under electrode spacing regulation platform
First electrode 4 and the second electrode 5 of side.Being provided with elevating mechanism on this workbench, elevating mechanism includes being vertically arranged in work
Hydraulic stem 32 on platform, the mobile terminal of hydraulic stem is fixed with adapter sleeve 20, and electrode spacing regulation platform fixes with adapter sleeve.
As in figure 2 it is shown, be provided with involute shifting chute 10 on electrode spacing regulation platform, involute shifting chute medial wall is provided with
The motion of movement in involute shifting chute.Container is arranged on the table surface below spacing motor regulation platform.
Connecting first connecting rod 6 on first electrode, first connecting rod is rotated up being connected to center, involute shifting chute involute basic circle place
Locating, and first connecting rod upper end is positioned at platform upper through platform, the second electrode connects second connecting rod 5, second connecting rod upwards connects
It is connected on motion, and second connecting rod upper end is positioned at platform upper through platform, sets at first connecting rod and second connecting rod upper end
It is equipped with just to governor motion, in workbench, is additionally provided with processing module, as it is shown in figure 5, the first electrode, the second electrode and processing module
Connecting, processing module is connected with controlling terminal.
As in figure 2 it is shown, involute shifting chute 10 includes work nest 11 and lead-over groove 12 two parts, work nest is along involute
The cell body run through up and down arranged, lead-over groove is the cell body bottom band, and lead-over groove is connected between work nest two ends gently, by whole
Individual involute shifting chute connects into an enclosed slot.The width of lead-over groove is less than the width of work nest, in lead-over groove two ends and work
Groove two ends connecting place is respectively formed with block body 22.
As shown in Figures 2 and 3, motion includes the limit guide rail 16 being arranged on involute shifting chute medial wall, limit
Guide rail cross section, position is T-shaped, and in limit guide rail, engagement sleeves is equipped with mobile band 13, and mobile band is buckled in limit guide rail.At mobile band
Outer surface on be provided with denticle 17, at lead-over groove, be additionally provided with motor-driven gear 21, gear and mobile belt surface tooth
Body is meshed, and is further fixed on fixed cover 14 on the moving belt, and fixed cover is located in work nest, and second connecting rod is connected to fixed cover
On.
As shown in Figure 1 and Figure 4, just include governor motion being separately positioned on first connecting rod 6 upper end and second connecting rod 7 upper end
Flat board 8, two flat boards are parallel and surface faces, and are fixed with an expansion link 9 between two flat boards, and expansion link is flat with two respectively
Plate is vertically fixed.
As it is shown in figure 1, device also has rabbling mechanism, rabbling mechanism includes being arranged on the turntable in the middle of container bottom
25, in the middle of turntable, it is provided with through hole 26, in through hole, sealing bearing is provided with spill spin block 27, spill spin block is provided with
Rotating vane 28, is provided with splined hole 29 bottom spill spin block, be provided with rotating driver 31 in the workbench 1 of lower vessel portion,
Rotating driver includes that motor, motor are connected with processing module, and the rotating shaft of motor is provided with spline 30, and spline exposes in work
On platform surface, described spline is inserted in splined hole.
Use the present embodiment concentration detection apparatus method to maltose solution Concentration Testing, comprise the following steps:
Step one: detection working electrode and the most qualified to electrode, if qualified, carry out next step, otherwise changes work
Make electrode and to electrode；
Wherein motor is the most qualified comprises the following steps again in detection:
A. the 0.1mol/L NaOH solution taking 25ml adds in container and stirs, processing module at working electrode and
To between electrode apply voltage range be-0.2V-0.7V, the scanning voltage of scanning speed 0.05V/S be scanned, processing module
Detection electric current density, and send it to control terminal, control terminal and obtain current density maxima and electric current density minima,
And calculate difference A1 between current density maxima and electric current density minima；
B. cleaning container is clean, take the 0.1mol/LNaOH solution of 15ml and the 0.1mmol/L maltose solution of 10ml
Addition container is interior and stirs, and electrochemical workstation applies voltage range between the first electrode and the second electrode for-0.2V-
0.7V, the scanning voltage of scanning speed 0.05V/S are scanned, processing module detection electric current density, and send it to control
Terminal, controls terminal and obtains current density maxima and electric current density minima, and calculate current density maxima and electric current
Difference A2 between density minima；
If C.Then control terminal judges working electrode and be qualified to electrode, ifThen control terminal judges working electrode or defective to electrode.
Step 2: the 0.1mol/L NaOH solution taking 25ml adds in container, rabbling mechanism operation duration agitating solution,
Processing module applies the constant voltage of+0.5V between the first electrode and the second electrode；
Step 3: the 0.1mol/L maltose solution taking 0.05ml adds in container, controls terminal and is examined by processing module
Survey electric current density, control terminal simultaneously and adjust second electrode position on involute shifting chute by motion, detect the
Two electrodes are positioned at electric current density during involute shifting chute diverse location, finally make the second electrode rest on the electric current of detection close
Degree is at maximum, the maltose concentration x of solution in record current density value S (t) now and container.
Step 4: add in container at interval of the 0.1mol/L maltose solution taking 0.05ml for 50 seconds, controls terminal and passes through
Processing module detection primary current density, such cycle detection 9 times, and record current density value S (t) that detects each time and
The maltose concentration X of solution in corresponding container；
Step 5: control terminal and 10 current density values S (t) of detection are carried out same data process, calculate 10
Individual signal to noise ratio eigenvalue, the data carrying out each current density value S (t) process and comprise the following steps:
Substitute into second-order linear system accidental resonance model
In, and make second-order linear system accidental resonance model resonate,
Wherein, x (t) is the displacement of vibration particle, and Ω is angular frequency, r and ω is that the attenuation quotient set is with linear respectively
The frequency of vibration particle, c is the signal adjustment coefficient set, and b is the quadratic noise ξ set2T the coefficient of (), ξ (t) is three discriminations
Noise, {-a, 0, a}, a ＞ 0, the dismutation of noise follows Poisson distribution to ξ (t) ∈, and its probability distribution is ps(a)=ps(-a)
=q, ps(0)=1-2q, wherein 0 ＜ q ＜ 0.5,
Noise average and dependency follow<ξ (t)>=0,<ξ (t) ξ (t+ τ)>=2qa2e-λτ,
Wherein λ is correlation ratio, and the glacing flatness of three discriminations noise ξ (t) is
Utilize formulaIt is calculated signal to noise ratio eigenvalue SNRmax；
Step 6: according to 10 signal to noise ratio eigenvalue SNRmaxAnd the maltose concentration X of solution in 10 containers of correspondence
Linear fit obtains concentration computing formula: SNRmax=1.67544+1.70142x；
Step 7: cleaning container is clean, adds maltose solution to be measured in container, controls terminal and passes through processing module
Detection primary current density, substitutes into second-order linear system accidental resonance model by current density value S (t) of detection, is calculated
Signal to noise ratio eigenvalue SNRmax, by signal to noise ratio eigenvalue SNRmaxSubstitute into concentration computing formula: SNRmax=1.67544+
1.70142x, calculate the concentration of maltose solution.
Specific embodiment described herein is only to present invention spirit explanation for example.Technology neck belonging to the present invention
Described specific embodiment can be made various amendment or supplements or use similar mode to replace by the technical staff in territory
Generation, but without departing from the spirit of the present invention or surmount scope defined in appended claims.
Although the most more employing workbench, electrode spacing regulation platform, container, the first electrode, the second electrode etc.
Term, but it is not precluded from using the probability of other term.Use these terms to be only used to more easily to describe and explain
The essence of the present invention；It is all contrary with spirit of the present invention for being construed as any additional restriction.
Claims (8)
1. a maltose solution concentration detection apparatus, it is characterised in that: include controlling terminal (19) and data collecting mechanism, institute
State that data acquisition mechanism includes workbench (1), electrode spacing regulation platform (2), container (3), to be arranged on electrode spacing regulation flat
The first electrode (4) below platform and the second electrode (5), described electrode spacing regulation platform is connected to workbench by elevating mechanism
On, container is arranged on electrode spacing regulation platform lower, is provided with involute shifting chute (10) on electrode spacing regulation platform,
Involute shifting chute medial wall is provided with the motion of movement in involute shifting chute, described first electrode connects
First connecting rod (6), first connecting rod is rotated up being connected to center, involute shifting chute basic circle place, and first connecting rod upper end is worn
Crossing platform and be positioned at platform upper, described second electrode connects second connecting rod (7), second connecting rod connects up at motion
On, and second connecting rod upper end is positioned at platform upper through platform, is provided with just to regulation at first connecting rod and second connecting rod upper end
Mechanism, is additionally provided with processing module in workbench, described first electrode, the second electrode are connected with processing module (18), processing module
Being connected with controlling terminal, described involute shifting chute (10) includes work nest (11) and lead-over groove (12), and work nest is along gradually
Burst at the seams the cell body run through up and down arranged, and described lead-over groove is connected to gently between work nest two ends, is moved by whole involute
Groove connects into an enclosed slot, and described motion includes the limit guide rail (16) being arranged on involute shifting chute medial wall, institute
Stating limit guide rail cross section is T-shaped, and in limit guide rail, engagement sleeves is equipped with mobile band (13), is provided with on the outer surface of mobile band
Denticle (17), is additionally provided with motor-driven gear (21) at lead-over groove, and described gear is meshed with mobile belt surface denticle,
Being further fixed on fixed cover (14) on the moving belt, described fixed cover is located in work nest, and described second connecting rod is connected to fix
Put.
Maltose solution concentration detection apparatus the most according to claim 1, is characterized in that described just including governor motion
Being separately positioned on the flat board (8) of first connecting rod (6) upper end and second connecting rod upper end, two flat boards are parallel and surface faces,
Being fixed with an expansion link (9) between two flat boards, described expansion link is vertical with two flat boards respectively to be fixed.
Maltose solution concentration detection apparatus the most according to claim 2, is characterized in that described lead-over groove (12) is at the bottom of band
The cell body in portion, the width of lead-over groove, less than the width of work nest, is formed with work nest two ends connecting place respectively at lead-over groove two ends
There is block body (22).
Maltose solution concentration detection apparatus the most according to claim 1 and 2, is characterized in that also including rabbling mechanism,
Rabbling mechanism includes being arranged on the turntable (25) in the middle of container bottom, is provided with through hole (26), in the middle of turntable in through hole
It is provided with spill spin block (27) by sealing bearing, spill spin block is provided with rotating vane (28), bottom spill spin block, is provided with flower
Keyhole (29), is provided with rotating driver (31) in the workbench (1) of lower vessel portion, and rotating driver includes motor, motor
Being connected with processing module, the rotating shaft of motor is provided with spline (30), spline exposes on table surface, and described spline inserts
In splined hole.
Maltose solution concentration detection apparatus the most according to claim 1 and 2, is characterized in that described elevating mechanism includes erecting
The hydraulic stem (32) being directly arranged on workbench (1), the mobile terminal of hydraulic stem is fixed with adapter sleeve (20), described electrode spacing
Regulation platform (2) fixes with adapter sleeve.
Maltose solution concentration detection apparatus the most according to claim 1 and 2, is characterized in that described first electrode (4) is
Foam copper electrode, described second electrode (5) is platinum plate electrode.
7. a maltose solution concentration detection method, uses the device in any one of claim 3-6, it is characterized in that including with
Lower step:
Step one: detect the first electrode and the second electrode is the most qualified, if qualified, carry out next step, otherwise changes first
Electrode and the second electrode；
Step 2: the 0.1mol/L NaOH solution taking 25ml adds in container, rabbling mechanism operation duration agitating solution processes
Module applies the constant voltage of+0.5V between the first electrode and the second electrode；
Step 3: the 0.1mol/L maltose solution taking 0.05ml adds in container, controls terminal by processing module detection electricity
Current density, controls terminal simultaneously and adjusts second electrode position on involute shifting chute, detection the second electricity by motion
Pole is positioned at electric current density during involute shifting chute diverse location, finally makes the second electrode rest at the electric current density of detection
At maximum, and record the maltose concentration X of solution in current density value S (t) now and container；
Step 4: add in container at interval of the 0.1mol/L maltose solution taking 0.05ml for 50 seconds, controls terminal by processing
Module detection primary current density, such cycle detection 9 times, and record current density value S (t) and correspondence thereof detected each time
Container in the maltose concentration X of solution；
Step 5: control terminal and 10 current density values S (t) of detection are carried out same data process, calculate 10 letters
Making an uproar ratio eigenvalue, the data carrying out each current density value S (t) process and comprise the following steps:
Substitute into second-order linear system accidental resonance model
In, and make second-order linear system accidental resonance model resonate,
Wherein, x (t) is the displacement of vibration particle, and Ω is angular frequency, r and ω is the attenuation quotient set and linear oscillator respectively
The frequency of particle, c is the signal adjustment coefficient set, and b is the quadratic noise ξ set2T the coefficient of (), ξ (t) is that three discriminations are made an uproar
Sound, {-a, 0, a}, a ＞ 0, the dismutation of noise follows Poisson distribution to ξ (t) ∈, and its probability distribution is ps(a)=ps(-a)=
Q, ps(0)=1-2q, wherein 0 < q < 0.5,
Noise average and dependency follow<ξ (t)>=0,<ξ (t) ξ (t+ τ)>=2qa2e-λτ,
Wherein λ is correlation ratio, and the glacing flatness of three discriminations noise ξ (t) is
Utilize formulaIt is calculated signal to noise ratio eigenvalue SNRmax；
Step 6: according to 10 signal to noise ratio eigenvalue SNRmaxAnd the maltose concentration x-ray of solution in 10 containers of correspondence
Matching obtains concentration computing formula: SNRmax=1.67544+1.70142x；
Step 7: cleaning container is clean, adds maltose solution to be measured in container, controls terminal and is detected by processing module
Primary current density, substitutes into second-order linear system accidental resonance model by current density value S (t) of detection, is calculated noise
Ratio eigenvalue SNRmax, by signal to noise ratio eigenvalue SNRmaxSubstitute into concentration computing formula: SNRmax=1.67544+1.70142x, meter
Calculate the concentration of maltose solution.
Maltose solution concentration detection method the most according to claim 7, is characterized in that step one is further comprising the steps of:
A. the 0.1mol/L NaOH solution taking 25ml adds in container and stirs, and processing module is at the first electrode and second
Between electrode apply voltage range be-0.2V-0.7V, the scanning voltage of scanning speed 0.05V/S be scanned, processing module examine
Survey electric current density, and send it to control terminal, control terminal and obtain current density maxima and electric current density minima,
And calculate difference A1 between current density maxima and electric current density minima；
B. cleaning container is clean, the 0.1mmol/L maltose solution of the 0.1mol/L NaOH solution and 10ml that take 15ml adds
Container is interior and stirs, and electrochemical workstation applies voltage range between the first electrode and the second electrode for-0.2V-
0.7V, the scanning voltage of scanning speed 0.05V/S are scanned, processing module detection electric current density, and send it to control
Terminal, controls terminal and obtains current density maxima and electric current density minima, and calculate current density maxima and electric current
Difference A2 between density minima；
If C.Then control terminal judges the first electrode and the second electrode is qualified, ifThen control terminal judges the first electrode or the second electrode is defective.
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| CN104458838A (en) * | 2014-09-26 | 2015-03-25 | 浙江工商大学 | Concentration detection device and method for aspartame solution |
| CN113008955B (en) * | 2021-03-03 | 2023-03-17 | 浙江农林大学 | Device and method for detecting concentration of glucose, fructose and sucrose mixed solution |
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| CN101329258A (en) * | 2007-06-21 | 2008-12-24 | 苏州艾杰生物科技有限公司 | Maltose determination reagent kit and method for determining maltose concentration |
| CN103389333A (en) * | 2013-07-19 | 2013-11-13 | 东南大学 | Composite nano-material-modified electrode-based novel blood sugar rapid-detection device |
| CN104458877A (en) * | 2014-09-26 | 2015-03-25 | 浙江工商大学 | Concentration detection device and method for maltose solution |
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| US20060102471A1 (en) * | 2004-11-18 | 2006-05-18 | Karl Maurer | Electrode array device having an adsorbed porous reaction layer |
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| CN101329258A (en) * | 2007-06-21 | 2008-12-24 | 苏州艾杰生物科技有限公司 | Maltose determination reagent kit and method for determining maltose concentration |
| CN103389333A (en) * | 2013-07-19 | 2013-11-13 | 东南大学 | Composite nano-material-modified electrode-based novel blood sugar rapid-detection device |
| CN104458877A (en) * | 2014-09-26 | 2015-03-25 | 浙江工商大学 | Concentration detection device and method for maltose solution |
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| 高效液相色谱法与化学法测定蜂蜜中果糖、葡萄糖、蔗糖、麦芽糖含量的比较与研究;田艳玲等;《食品研究与开发》;20080831;第29卷(第8期);第126-129页 * |
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