CN109030099A - Take liquid test method and device - Google Patents
Take liquid test method and device Download PDFInfo
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- CN109030099A CN109030099A CN201810574701.4A CN201810574701A CN109030099A CN 109030099 A CN109030099 A CN 109030099A CN 201810574701 A CN201810574701 A CN 201810574701A CN 109030099 A CN109030099 A CN 109030099A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/10—Devices for withdrawing samples in the liquid or fluent state
- G01N1/14—Suction devices, e.g. pumps; Ejector devices
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N35/00—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor
- G01N35/10—Devices for transferring samples or any liquids to, in, or from, the analysis apparatus, e.g. suction devices, injection devices
- G01N35/1009—Characterised by arrangements for controlling the aspiration or dispense of liquids
- G01N35/1011—Control of the position or alignment of the transfer device
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- Health & Medical Sciences (AREA)
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- Analytical Chemistry (AREA)
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- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Hydrology & Water Resources (AREA)
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
Abstract
This application provides one kind to take liquid test method and device, is related to bio-medical technology field.Take liquid test method, comprising: obtain measurement parameter of probe during once taking liquid, measurement parameter is the parameter for causing probe signals to change；It according to variable quantity and decision threshold of the measurement parameter during once taking liquid, determines and takes whether liquid succeeds during once taking liquid, once taking the variable quantity during liquid includes the variable quantity for defaulting the measurement parameter for taking liquid finish time to leave the liquid level moment to default.It can reduce judgement using the technical solution of the application and take the whether successful False Rate of liquid.
Description
Technical field
The present invention relates to biologic medical fields more particularly to one kind to take liquid test method and device.
Background technique
In biologic medical field, it is often necessary to carry out all kinds of experiments.During being tested, need to contain from liquid
It puts and draws liquid in container.Specifically, for drawing the probe of liquid driven by the motor in liquid in liquid absorbing device
Downlink or uplink in container.Probe encounters the bottom of liquid containing container in order to prevent, and prevents from being drawn to and not need
Liquid, when probe touches the liquid level of liquid containing liquid in containers, probe draw liquid.It, will after probe draws liquid
Liquid is transferred in other containers and releases.
Draw liquid practical operation in often exist such as bubble, electrostatic, electromagnetic interference, distribution capacity factor shadow
It rings, is mistaken for having touched liquid level when causing probe also not in contact with liquid level, take liquid to be unsuccessfully mistaken for taking liquid success, cause to take
The successful False Rate of liquid is higher.At this stage, the successful False Rate of liquid is taken in order to reduce, liquid absorbing device will record to be visited each time
Needle touches the position of liquid level.The position of liquid level is touched by comparing the position of current probe and the last probe of record,
Judge whether current probe touches liquid level.If two position difference distances exceed reasonable threshold value, it is determined that current probe is not
Liquid level is touched, takes liquid also and failed, judges by accident.But for only needing single to take the scene of liquid and for the first time taking liquid
For scene, and the case where last probe touches the liquid level is not present, therefore can not judge whether current probe takes liquid
Success, False Rate are still higher.
Summary of the invention
The embodiment of the invention provides one kind to take liquid test method and device, can reduce judgement and takes whether liquid successfully misses
Sentence rate.
In a first aspect, the present invention provides one kind to take liquid test method, comprising: obtain probe during once taking liquid
Measurement parameter, the measurement parameter are the parameter for causing probe signals to change；Liquid is once taken described according to the measurement parameter
Variable quantity and decision threshold in the process determine that described once take during liquid takes whether liquid succeeds, described once to take liquid process
In variable quantity include default take liquid finish time to default leave the liquid level moment measurement parameter variable quantity.
Second aspect, the present invention provides one kind to take liquid test device, including takes liquid test circuit and probe；The probe
For taking liquid；It is described to take liquid test circuit for obtaining measurement parameter of probe during once taking liquid, the measurement parameter
For the parameter for causing probe signals to change；And for according to the measurement parameter it is described once take liquid during variation
Amount and decision threshold determine that described once take during liquid takes whether liquid succeeds, the variable quantity packet once taken during liquid
Include the variable quantity for the measurement parameter that default takes liquid finish time to leave the liquid level moment to default.
The present invention provides one kind to take liquid test method and device, utilizes the variable quantity and decision threshold once taken during liquid
Value determines and takes whether liquid succeeds during this takes liquid.It includes that default takes liquid finish time to silent that this, which takes the variable quantity during liquid,
Recognize the variable quantity for leaving the measurement parameter at liquid level moment.By probe not in contact with liquid level be mistaken for probe contact liquid level or probe take
Measurement parameter variable quantity phase in the insufficient scene of liquid, at the time of default after taking liquid finish time to default to take liquid finish time
Closely, judge using decision threshold, to avoid judging by accident, reduce probe and take the whether successful False Rate of liquid.The present invention is implemented
In example take liquid test method only need single take liquid scene and for the first time take liquid scene in also can reduce judgement and take liquid
Whether successful False Rate.
Detailed description of the invention
The present invention may be better understood from the description with reference to the accompanying drawing to a specific embodiment of the invention wherein,
The same or similar appended drawing reference indicates the same or similar feature.
Fig. 1 is a kind of application scenarios schematic diagram in the embodiment of the present invention；
Fig. 2 is a kind of in the embodiment of the present invention frequency of oscillation of probe signals and the relation curve of time during liquid to be taken to show
It is intended to；
Fig. 3 is a kind of in the embodiment of the present invention to take the variable quantity of the frequency of oscillation of probe signals and the pass of time during liquid
It is curve synoptic diagram；
Fig. 4 is another in the embodiment of the present invention to take the variable quantity of the frequency of oscillation of probe signals and time during liquid
Relation curve schematic diagram；
Fig. 5 is that another in the embodiment of the present invention takes the variable quantity of the frequency of oscillation of probe signals and time during liquid
Relation curve schematic diagram；
Fig. 6 is a kind of flow chart for taking liquid test method in the embodiment of the present invention；
Fig. 7 is a kind of variable quantity and the relation curve schematic diagram of time of frequency of oscillation in the embodiment of the present invention；
Fig. 8 is a kind of variable quantity and the relation curve schematic diagram of time of the frequency of oscillation of noise in the embodiment of the present invention；
Fig. 9 is a kind of structural schematic diagram for taking liquid test device in the embodiment of the present invention；
Figure 10 is the hardware structural diagram that one of embodiment of the present invention takes liquid equipment.
Specific embodiment
The feature and exemplary embodiment of various aspects of the invention is described more fully below.In following detailed description
In, many details are proposed, in order to provide complete understanding of the present invention.But to those skilled in the art
It will be apparent that the present invention can be implemented in the case where not needing some details in these details.Below to implementation
The description of example is used for the purpose of providing by showing example of the invention and better understanding of the invention.The present invention never limits
In any concrete configuration set forth below and algorithm, but cover under the premise of without departing from the spirit of the present invention element,
Any modification, replacement and the improvement of component and algorithm.In the the accompanying drawings and the following description, well known structure and skill is not shown
Art is unnecessary fuzzy to avoid causing the present invention.
It is referred in the application described in the expression such as " one embodiment ", " embodiment ", " each embodiment ", " example "
(one or more) embodiment or example may include specific feature, structure or feature, but not be each embodiment or example
It must include specific feature, structure or the feature.Moreover, the phrase " in one example " reused is not necessarily referring to together
One example, although it may refer to same example.
It is provided in an embodiment of the present invention to take liquid test method, device, liquid equipment and storage medium is taken to can be applied to biology, doctor
In the scene in the fields such as, chemistry, physics needing that liquid is taken to be tested or tested.Fig. 1 is that one kind is answered in the embodiment of the present invention
Use schematic diagram of a scenario.As shown in Figure 1, the probe of liquid test device is taken to move up and down under the control for taking liquid test circuit, and inhale
Take the liquid (taking liquid) held in liquid container.During once taking liquid, probe is gradually reduced above liquid, until visiting
A part of needle submerges liquid, and probe stop motion carries out taking liquid.When reaching the scheduled liquid for taking liquid duration or acquirement
Amount reaches predetermined amount, then probe terminates to take liquid, and is gradually increasing, until being reset to position when liquid process being taken to start where probe
It sets.
During taking liquid, take liquid test device can be according to the variation of probe signals, to judge whether probe touches liquid
Face.During probe is not in contact with to liquid level, probe always in a certain medium (can be air) in embodiments of the present invention
Movement, probe signals are unchanged or variation is smaller.Before leaving liquid level to probe after probe contacts liquid level, the head one of probe
Directly stop in a certain medium (in embodiments of the present invention can be liquid) or movement, probe signals are unchanged or variation compared with
It is small.
Never touch liquid level to during touching liquid level in probe, due to probe head from a certain medium (
Can be air in the embodiment of the present invention) enter another transfer (in embodiments of the present invention can be liquid), probe signals can be unexpected
Large change (mutating) occurs, generates larger fluctuation.But due to the influence of extraneous factor, for example, bubble, electrostatic,
Electromagnetic interference, distribution capacity etc. can also cause probe signals and large change (mutating) occur suddenly, generate larger wave
It is dynamic.Under the influence of extraneous factor, probe can also may also be mistaken for probe contact liquid level not in contact with to liquid level.Erroneous judgement occurs
Afterwards, probe starts to take liquid not in contact with liquid level, leads to that liquid is taken to fail.Alternatively, since probe enters the distance of liquid level
It is mismatched with scheduled liquid-taken amount, so that causing to take liquid insufficient taking liquid process middle probe to be detached from liquid level.Taking liquid deficiency is to take liquid
A kind of embodiment of failure.
In one example, probe signals, which mutate, can be embodied in the frequency of oscillation mutation of probe signals.
For example, Fig. 2 is a kind of in the embodiment of the present invention frequency of oscillation of probe signals and the relation curve of time during liquid to be taken to illustrate
Figure.As shown in Fig. 2, by taking noise is extraneous factor as an example.Noise will lead to frequency of oscillation mutation.Probe enters liquid from air
Body and probe enter air from liquid and will lead to frequency of oscillation mutation.Therefore, noise and liquid process middle probe is taken to take
Liquid is successfully difficult to differentiate between.
Fig. 3 is a kind of in the embodiment of the present invention to take the variable quantity of the frequency of oscillation of probe signals and the pass of time during liquid
It is curve synoptic diagram.As shown in figure 3, during taking liquid successfully once to take liquid, when probe contacts liquid level, the vibration of probe signals
The variable quantity for swinging frequency mutates.Probe enters liquid level and carries out during taking liquid, the change of the frequency of oscillation of probe signals
Change amount is gradually reduced, until zero.When probe leaves liquid level, the variable quantity of the frequency of oscillation of probe signals occurs prominent again
Become.During probe leaves liquid level rising reset, the variable quantity of the frequency of oscillation of probe signals is gradually reduced, until zero.
Fig. 4 is another in the embodiment of the present invention to take the variable quantity of the frequency of oscillation of probe signals and time during liquid
Relation curve schematic diagram.As shown in figure 4, if probe takes liquid success, the EG sections of stages for probe basis liquid level；GH sections are probe
Take the stage of liquid；The HI sections of stages for taking liquid success to leave from liquid for probe.If but probe takes liquid to be also not up to standard volume just
It is detached from liquid level, obtained by Fig. 4, the mutation of the variable quantity of frequency of oscillation occurs (i.e. before HI sections) in GH sections, in HI sections, vibration
The variable quantity for swinging frequency will not mutate.
Fig. 5 is that another in the embodiment of the present invention takes the variable quantity of the frequency of oscillation of probe signals and time during liquid
Relation curve schematic diagram.As shown in figure 5, if probe takes liquid success, the EG sections of stages for probe basis liquid level；GH sections are probe
Take the stage of liquid；The HI sections of stages for taking liquid success to leave from liquid for probe.If but the frequency of oscillation of probe signals is by the external world
The influence of factor such as noise, then in the case where probe is not in contact with liquid level, the variable quantity of the frequency of oscillation of probe signals can also be sent out
Raw mutation.Alternatively, if probe takes the duration of liquid too short, during probe takes liquid to terminate to be detached from liquid level to probe, probe letter
Number frequency of oscillation do not restore also, cause probe take liquid terminate to probe be detached from liquid level during probe signals frequency of oscillation
Variable quantity it is smaller.It can be obtained by Fig. 5, but in HI sections, the variable quantity of frequency of oscillation will not mutate.
It is provided in an embodiment of the present invention to take liquid test method, device, take liquid equipment and storage medium, existed according to measurement parameter
The variable quantity and decision threshold during liquid are once taken, determines and takes whether liquid succeeds during this takes liquid.It can be more precisely
Judgement takes and takes whether liquid succeeds during liquid, to avoid that liquid is taken successfully to judge by accident, reduces the False Rate for taking liquid successfully to determine.
It should be noted that " mutation " in following embodiments refers to whithin a period of time, measurement parameter, which increases or reduces, is more than
The value of threshold value.
Fig. 6 is a kind of flow chart for taking liquid test method in the embodiment of the present invention.As shown in fig. 6, taking liquid test method packet
Step S101 is included to step S102.
In step s101, measurement parameter of probe during once taking liquid is obtained.
Wherein, measurement parameter is the parameter for causing probe signals to change.For example, capacitor, resistance, inductance, pressure, probe are believed
Number frequency of oscillation in it is one or more.During probe enters liquid from air, the capacitor of probe, resistance, inductance,
Pressure can mutate, and the capacitor of probe, resistance, inductance, pressure mutates can be embodied as the oscillation of probe signals
Frequency mutates.For the ease of hourly observation and judgement, the frequency of oscillation of probe signals can be monitored and be obtained.Than
Such as, can variation according to RC oscillator principle by probe relative to the value of the capacitor on ground, be converted into and be easier to monitored probe
The frequency of oscillation of signal or charge and discharge time in the cycle of oscillation of probe signals, capacitor are inversely proportional with frequency of oscillation.For another example,
Can variation according to LC oscillator principle by probe relative to the value of the capacitor on ground, be converted into and be easier to monitored probe signals
Frequency of oscillation or probe signals cycle of oscillation in the charge and discharge time.
Probe repeatedly obtains measurement parameter during once taking liquid.In one example, settable acquisition measurement parameter
Period, such as setting obtain measurement parameter period be 10 milliseconds, then during taking liquid, every 10 milliseconds, liquid is taken to test
Device obtains one-shot measurement parameter.
In step s 102, the variable quantity and decision threshold according to measurement parameter during once taking liquid determines primary
Liquid is taken to take whether liquid succeeds in the process.
During once taking liquid, the difference of the measurement parameter at any two moment is the measurement parameter at the two moment
Variable quantity.Once taking the variable quantity during liquid includes defaulting the measurement that the liquid level moment is left to default for taking liquid finish time
The variable quantity of parameter.Decision threshold takes whether liquid succeeds during liquid for assisting to determine to take, specifically can according to operative scenario and
Work requirements setting, does not limit herein.
It is the probe defaulted at the time of take liquid to terminate that default, which takes liquid finish time,.During once taking liquid, when measurement is joined
When number mutates for the first time, default probe contacts liquid level, but actually not can determine that whether probe contacts liquid level at this time.?
When default probe contact liquid level or later, control probe takes liquid.When take the duration of liquid reach it is scheduled take liquid duration at the time of note
Liquid finish time is taken for default.Default leaves the probe that the liquid level moment is default and is in any moment left in liquid level state.
When measurement parameter mutates for the second time, default probe leaves liquid level.Measurement parameter during liquid is once taken to occur for the second time
Any moment in period at the time of mutation and after mutating for second of measurement parameter can be denoted as default and leave liquid
The face moment.For example, after taking liquid, probe is moved upwards during once taking liquid, liquid level is left, resets position until returning to
It sets, reset position is position when liquid process being taken to start where probe.As default at the time of probe can be returned to reset position
Leave the liquid level moment.
In one example, decision threshold includes variable quantity threshold value.Variable quantity threshold value is the threshold value being arranged for variable quantity,
It can specifically be set according to operative scenario and work requirements, not limited herein.
The variable quantity for the measurement parameter that default takes the measurement parameter of liquid finish time and default to leave the liquid level moment can be obtained.
If defaulting the variable quantity for the measurement parameter for taking the measurement parameter of liquid finish time and default to leave the liquid level moment, it is greater than or equal to and becomes
Change amount threshold value determines and takes liquid success.If the measurement that default takes the measurement parameter of liquid finish time and default to leave the liquid level moment is joined
Several variable quantities is less than variable quantity threshold value, it is determined that liquid is taken to fail.
For example, measurement parameter is the frequency of oscillation of probe signals.Variable quantity threshold value is 0.019MHz (megahertz).It gets
Default to take the frequency of oscillation of the probe signals of liquid finish time be 3.956MHz, default leaves the change of liquid level moment measurement parameter
Change amount is 3.976MHz.Due to 3.976MHz-3.956MHz > 0.019MHz, it is thus determined that taking liquid success.If what is got is silent
Recognize and take the frequency of oscillation of the probe signals of liquid finish time for 3.974MHz, default leaves the variable quantity of liquid level moment measurement parameter
For 3.976MHz.Due to 3.976MHz-3.974MHz < 0.019MHz, it is thus determined that liquid is taken to fail.
The variable quantity for the measurement parameter that default takes the measurement parameter of liquid finish time and default leaves the liquid level moment be greater than or
Equal to variable quantity threshold value, show to take liquid finish time to leave the liquid level moment to default from default, measurement parameter mutates.
The variable quantity for the measurement parameter that default takes the measurement parameter of liquid finish time and default to leave the liquid level moment is less than variable quantity threshold value,
Show to take liquid finish time to leave the liquid level moment to default from default, measurement parameter does not mutate.
If taken during this time takes liquid liquid success, default take the head of liquid finish time probe also in liquid it
In, the head that default leaves liquid level moment probe is among air.That moment of liquid level, measurement ginseng are left in end of probe
Number can mutate.
On the contrary, erroneous judgement probe contact liquid level is influenced to draw by extraneous factor if taking liquid to fail during this time takes liquid
The mutation duration risen is shorter, and default takes the head of liquid finish time probe to be among air, and default leaves liquid level
The head of moment probe is also among air.Measurement parameter can't mutate.
Therefore, the measurement parameter of liquid finish time and default can be taken to leave the change of the measurement parameter at liquid level moment by default
The relationship of change amount and variable quantity threshold value determines that this time takes whether liquid process middle probe Fluid Contacting face is erroneous judgement, so as to accurate
Judgement takes whether liquid succeeds, and avoids erroneous judgement, reduces the False Rate for taking liquid successfully to determine.
In another example, decision threshold includes that integral error adjusts threshold value.It is for change that integral error, which adjusts threshold value,
The error threshold of the integral setting of change amount, can specifically set according to operative scenario and work requirements, not limit herein.
Available default takes liquid finish time to the variable quantity and time for defaulting the measurement parameter for leaving the liquid level moment
The integral of first relation function.And default can be obtained not in contact with the liquid level moment to the measurement parameter for defaulting the contact liquid level moment
The integral of variable quantity and the second relation function of time.
Wherein, the explanation that default takes liquid finish time to leave the liquid level moment to default can be found in related in above-described embodiment
Declaratives, details are not described herein.
Default not in contact with the liquid level moment be default probe also not in contact with arrive liquid level at the time of.Default contact the liquid level moment be
At the time of the end of probe of default enters liquid level.During once taking liquid, when measurement parameter mutates for the first time, default
Probe touches liquid level.It should be noted that any moment within the period before default probe touches liquid level
It is considered as default not in contact with the liquid level moment.At the time of the default contact liquid level moment can enter liquid level for the head of the probe of default.?
Any moment in period between at the time of probe at the time of the probe of default contacts liquid level to default takes liquid to terminate is equal
It can be considered the default contact liquid level moment.For example, during once taking liquid, it can be after measurement parameter mutates for the first time extremely
Any moment in period before second of mutation of measurement parameter is considered as the default contact liquid level moment.
Specifically, above-mentioned the first relation function and the second relation function can be indicated in the form of relation curve.For example, with
For measurement parameter is the frequency of oscillation of probe signals, Fig. 7 be in the embodiment of the present invention a kind of variable quantity of frequency of oscillation and when
Between relation curve schematic diagram.As shown in fig. 7, the straight line that the corresponding relation curve of the first relation function is 0 with ordinate surrounds
The area of figure A1 (i.e. dash area A1) is the integral of the first relation function.As shown in fig. 7, the second relation function is corresponding
Relation curve generally within ordinate negative semiaxis, therefore the integral of the second relation function be negative value.That is, the second relationship
The opposite number for the area that the straight line that the corresponding relation curve of function and ordinate are 0 surrounds figure A2 (i.e. dash area A2) is
The integral of second relation function.
In this example, as shown in fig. 7, using the area of dash area A1 and the area of dash area A2, to determine
Take whether liquid succeeds.Corresponding, what is utilized is the opposite number of the integral and the integral of the second relation function of the first relation function, is come
Determination takes whether liquid succeeds.
If the difference that the integral of the first relation function and integral error adjust threshold value is less than or equal to the second relation function
The opposite number of integral, and the integral of the first relation function and integral error adjust the adduction of threshold value more than or equal to the second relationship letter
The opposite number of several integrals, it is determined that take liquid success.If the integral of the first relation function and integral error adjust the difference of threshold value
It is small greater than the integral of the opposite number of the integral of the second relation function or the first relation function and the adduction of integral error adjusting threshold value
In the opposite number of the integral of the second relation function, it is determined that liquid is taken to fail.
For example, measurement parameter is the frequency of oscillation of probe signals.The integral of first relation function is to take liquid finish time extremely
Default leaves the variable quantity of the frequency of oscillation of the probe signals at liquid level moment and the integral of the relation function of time.Second relationship letter
Several integrals is variable quantity and the relationship of time of the default not in contact with the measurement parameter at liquid level moment to default contact liquid level moment
The integral of function.It is 0.05MHz that integral error, which adjusts threshold value,.The integral of the first relation function got is 1.79MHz.It obtains
The integral of the second relation function arrived is -1.80MHz.Due to 1.79MHz-0.05MHz < 1.80MHz < 1.79MHz+
0.05MHz, it is thus determined that taking liquid success.The integral of the first relation function got is 0.57MHz.The second relationship got
The integral of function is -1.80MHz.Due to 0.57MHz+0.05MHz < 1.80MHz, it is thus determined that liquid is taken to fail.
The difference that the integral and integral error of first relation function adjust threshold value is less than or equal to the product of the second relation function
The opposite number divided, and the integral of the first relation function and integral error adjust the adduction of threshold value more than or equal to the second relation function
Integral opposite number.That is the integral of the first relation function is close with the opposite number of the integral of the second relation function.Show silent
Recognize the variable quantity for the measurement parameter for taking liquid to terminate to take the liquid moment to leave liquid level to default, and default not in contact with the liquid level moment to silent
The variable quantity for recognizing the measurement parameter at contact liquid level moment mutates, and the amplitude to mutate is also similar.That is,
Default in the period not in contact with the liquid level moment to default contact liquid level moment, probe, which is completed from air, enters the dynamic of liquid
Make.Within the period that default takes liquid finish time to leave the liquid level moment to default, probe, which completes to be detached from from liquid, enters sky
The movement of gas.It then can determine and take liquid success.
The difference that the integral of first relation function adjusts threshold value with integral error is greater than the phase of the integral of the second relation function
Anti- several or the first relation function integrals and the integral error adduction for adjusting threshold value are opposite less than the integral of the second relation function
Number.Show extremely to default in the period for contacting the liquid level moment in default not in contact with the liquid level moment, and at the end of default takes liquid
It carves in the period for leaving the liquid level moment to default, primary mutation only has occurred in the variable quantity of measurement parameter.That is, silent
Recognize in the period not in contact with the liquid level moment to default contact liquid level moment, probe does not complete the movement for entering liquid from air.
Alternatively, probe, which does not complete to be detached from from liquid, to be entered within the period that default takes liquid finish time to leave the liquid level moment to default
The movement of air.Then determination takes liquid to fail.
Therefore, the integral of the first relation function, the opposite number and integral error tune of the integral of the second relation function can be passed through
The relationship for saving threshold value, determines that this time takes whether liquid process middle probe Fluid Contacting face is erroneous judgement, so as to accurately determine to take liquid to be
No success avoids erroneous judgement, reduces judgement and takes the whether successful False Rate of liquid.
For example, Fig. 8 shows for the variable quantity and the relation curve of time of the frequency of oscillation of noise a kind of in the embodiment of the present invention
It is intended to.As shown in figure 8, taking liquid finish time to default to leave the liquid level moment in default, noise occurs, the variable quantity of frequency of oscillation
It mutates.Specifically, the variable quantity of frequency of oscillation is first uprushed, then and then the variable quantity of frequency of oscillation occurs prominent
Subtract.Then threshold is adjusted according to the integral and integral error of integral, the second relation function in above-mentioned example using the first relation function
Value, judgement take whether liquid succeeds.Wherein, the integral of the first relation function is the area of dash area B1 and the face of dash area B2
The sum of long-pending opposite number.Available by Fig. 8, the area of dash area B2 is greater than the area of dash area B1, the first relationship letter
Several integrals is that negative, the then integral of the first relation function and integral error adjust the adduction of threshold value less than the second relation function
The opposite number of integral, judgement take liquid to fail.So as in the scene that noise occurs, be accurately judged to take liquid by noise
It influences and failed.
In embodiments of the present invention, using the variable quantity and decision threshold once taken during liquid, determine that this takes liquid process
In take whether liquid succeeds.It includes defaulting the survey for taking liquid finish time to leave the liquid level moment to default that this, which takes the variable quantity during liquid,
Measure the variable quantity of parameter.The main reason for liquid will be taken unsuccessfully to be mistaken for taking liquid success includes being mistaken for visiting not in contact with liquid level by probe
Needle contacts liquid level, alternatively, probe takes liquid insufficient, end of probe has been detached from liquid at the end of causing probe to take liquid.By probe
Probe contact liquid level is mistaken for not in contact with liquid level or probe takes in the insufficient scene of liquid, and default takes liquid finish time to default to take liquid
Measurement parameter variable quantity at the time of after finish time is close, judges using decision threshold, to avoid judging by accident, reduces
Determine that probe takes the whether successful False Rate of liquid.Take liquid test method in the field for only needing single to take liquid in the embodiment of the present invention
It scape and takes in the scene of liquid and is applicable in other scenes for the first time, can reduce and determine that probe takes whether liquid successfully judges by accident
Rate.Moreover, the embodiment of the present invention can reduce determine probe take liquid whether successful False Rate on the basis of, have no effect on and take
The time that liquid process occupies, also do not increase device additionally in taking liquid test device, i.e., takes liquid test device without increasing
Complexity.
In one example, default, which leaves the liquid level moment, can choose the change of measurement parameter after default takes liquid finish time
Change amount is continuously any moment in zero period.After default takes liquid finish time, probe is gradually increasing.If probe enters
Liquid has certain depth, then probe needs after default takes liquid finish time after a period of time, probe could be detached from liquid
Body.After probe is detached from liquid, continue to rise, until resetting.During probe rises and resets, the variable quantity meeting of measurement parameter
It is progressively smaller until to be zero.After default takes liquid finish time, the variable quantity of measurement parameter is continuously appointing in zero period
One moment, it may be determined that probe has been moved off liquid level.The integral of thus obtained first relation function is more accurate, so as into one
Step, which improves, to be determined to take the whether successful accuracy of liquid, is reduced and is determined to take the whether successful False Rate of liquid.
In one example, default contact the liquid level moment can choose default not in contact with the liquid level moment after, in measurement parameter
The absolute value of variable quantity is greater than after change threshold for the first time, and is greater than variation for the second time in the absolute value of the variable quantity of measurement parameter
Before threshold value, the variable quantity of measurement parameter is continuously any moment in zero period.Change threshold is for determining to measure
The boundary value whether variable quantity of parameter mutates can set according to operative scenario and work requirements, not limit herein.It visits
After needle contacts liquid level, probe may also will continue to decline a distance, and start to take liquid.Probe declines simultaneously after contacting liquid level
During taking liquid, the variable quantity of measurement parameter can be progressively smaller until to be zero.After default is not in contact with the liquid level moment, measurement
In the period that the variable quantity of parameter is zero, it may be determined that probe comes into liquid.The product of thus obtained second relation function
It is point more accurate, so that can further improve judgement takes the whether successful accuracy of liquid, reduces and determine to take whether liquid successfully misses
Sentence rate.
Fig. 9 is a kind of structural schematic diagram for taking liquid test device in the embodiment of the present invention.As shown in figure 9, taking liquid test dress
It sets including probe 21 and liquid is taken to test circuit 22.
Wherein, probe 21 is for taking liquid.
Liquid test circuit 22 is taken to be used to obtain measurement parameter of probe during once taking liquid, measurement parameter is to cause to visit
The parameter of needle signal intensity；And it for the variable quantity and decision threshold according to measurement parameter during once taking liquid, determines
Once take during liquid and take whether liquid succeeds, once take the variable quantity during liquid include default take liquid finish time to default from
Open the variable quantity of the measurement parameter at liquid level moment.
Specifically, decision threshold includes variable quantity threshold value.In one example, taking liquid test circuit 22 includes detecting module
221.Detecting module 221 is used to default the measurement parameter for taking the measurement parameter of liquid finish time and default to leave the liquid level moment
Variable quantity in the case where being greater than or equal to variable quantity threshold value, determines and takes liquid success.Detecting module 221 is also used to take liquid in default
The case where measurement parameter and default of finish time leave the variable quantity of the measurement parameter at liquid level moment, are less than variable quantity threshold value
Under, determination takes liquid to fail.
Specifically, when the variable quantity during once taking liquid further includes that default contacts liquid level not in contact with the liquid level moment to default
The variable quantity of the measurement parameter at quarter；Decision threshold includes that integral error adjusts threshold value.In one example, liquid is taken to test circuit 22
Including detecting module 221.Detecting module 221, which is used to obtain the measurement that default takes liquid finish time to default to leave the liquid level moment, joins
The integral of first relation function of several variable quantity and time.Detecting module 221 is also used to obtain default not in contact with the liquid level moment
To the variable quantity of the measurement parameter at default contact liquid level moment and the integral of the second relation function of time.Detecting module 221 is also
Difference for integral and integral error adjusting threshold value in the first relation function is less than or equal to the integral of the second relation function
Opposite number, and the integral of the first relation function and integral error adjust the adduction of threshold value and are greater than or equal to the second relation function
In the case where the opposite number of integral, determines and take liquid success.Detecting module 221 is also used to integral and integral in the first relation function
The difference of regulating error threshold value is greater than the opposite number of the integral of the second relation function or the integral of the first relation function and integral misses
In the case that difference adjusts opposite number of the adduction less than the integral of the second relation function of threshold value, it is determined that liquid is taken to fail.
In one example, above-mentioned default leave the liquid level moment for default take liquid finish time after, the change of measurement parameter
Change amount is continuously any moment in zero period.
In one example, the above-mentioned default contact liquid level moment is after defaulting not in contact with the liquid level moment, in measurement parameter
The absolute value of variable quantity is greater than after change threshold for the first time, and is greater than variation for the second time in the absolute value of the variable quantity of measurement parameter
Before threshold value, the variable quantity of measurement parameter is continuously any moment in zero period.
In one example, above-mentioned measurement parameter may include the frequency of oscillation of capacitor, resistance, inductance, pressure, probe signals
In it is one or more, do not limit herein.
It should be noted that liquid test circuit is taken to may also include signal processing module 222, conversion module 223, conditioning module
224 and control module 225.
Wherein, settable external power supply 23 is that liquid test device is taken to power.Conditioning module 224 can be by probe relative to ground
Basis measurement parameter, such as capacitor, resistance, inductance, pressure are converted to the frequency of oscillation or spy of the probe signals easily measured
The charge and discharge time in the cycle of oscillation of needle signal, and conversion module 223 is input in the form of analog signal.Conversion module 223
Convert analog signals into digital signal.Signal processing module 222 filters digital signal further progress.Above-mentioned detecting module
221 can carry out taking whether liquid successfully determines according to filtered digital signal.Detecting module 221 can also be used to take liquid in determination
When success or failure, success notification message or failure notification message are generated and issued.Control module 225 can control probe motion,
Stop and take liquid.Above-mentioned modules can also be by way of or function integrated function segmentation by more modules or less
Module is realized, is not limited herein.
In one example, above-mentioned probe 21 can be the double-deck probe.The internal layer of the double-deck probe 21 tests circuit 22 with liquid is taken
Connection, specifically, the internal layer of the double-deck probe 21 can be connect with the conditioning module 224 in liquid test circuit 22 is taken.The double-deck probe
Outer layer is connect with reference.With reference to ground be with isolated from power internally.That is, being isolated with reference to ground with power ground.So that
It takes the core in liquid test device 20 that liquid test circuit 22 is taken to be isolated with other equipment or component, prevents other equipment or portion
Part bring interference signal brings adverse effect to taking liquid test process.Take liquid whether successful to further improve judgement
Accuracy reduces judgement and takes the whether successful False Rate of liquid.
The embodiment of the invention also provides one kind to take liquid system, and it includes above-mentioned taking liquid test device and being used for that this, which takes liquid system,
Place the pallet 31 for holding liquid container.Wherein, pallet 31 is connect with reference.Specifically, pallet 31 can be metal tray.
In one example, 31 lower section of pallet can also successively stack downwards insulating layer 32 and instrument rack 33.Instrument rack
It is connect with power ground.Specifically, instrument rack can be metal machine frame.Insulating layer 32 is for being isolated pallet 31 and instrument rack 33.
The outer layer of pallet 31 and the double-deck probe is all connected with reference to ground.Instrument rack connects power ground.With reference to ground and power ground
It is isolated.To will further take the core in liquid test device 20 to take liquid test circuit 22 and periphery in taking liquid system
Equipment, such as the isolation of instrument rack, prevent peripheral equipment bring interference signal to taking liquid test process to bring adverse effect.From
And further improve judgement and take the whether successful accuracy of liquid, it reduces judgement and takes the whether successful False Rate of liquid.
The concrete function of liquid test device and beneficial effect is taken to can be found in the phase for taking liquid test method in above-described embodiment
Specification specified content is closed, details are not described herein.
Take liquid test method and device can be by taking liquid to set in conjunction with Fig. 1 to Fig. 9 embodiment each according to the present invention described
Standby 400 realize.Figure 10 is the hardware structural diagram that one of embodiment of the present invention takes liquid equipment 400.
Taking liquid equipment 400 includes probe (not shown in FIG. 10), memory 401 and processor 402.On memory 401
It is stored with the program that can be run on the processor 402.The program runs in processor 402 and can be achieved to take liquid in above-described embodiment
Test method.
In one example, above-mentioned processor 402 may include central processing unit (CPU) or specific integrated circuit
(ASIC), or may be configured to implement the embodiment of the present application one or more integrated circuits.
Memory 401 may include the mass storage for data or instruction.For example it rather than limits, memory
401 may include HDD, floppy disk drive, flash memory, CD, magneto-optic disk, tape or universal serial bus (USB) driver or two
The combination of a or more the above.In a suitable case, memory 401 may include that can be removed or non-removable (or solid
Medium calmly).In a suitable case, memory 401 can take inside or outside liquid equipment 400.In a particular embodiment,
Memory 401 is non-volatile solid state memory.In a particular embodiment, memory 401 includes read-only memory (ROM).?
In suitable situation, which can be the ROM of masked edit program, programming ROM (PROM), erasable PROM (EPROM), electricity can
Wipe PROM (EEPROM), electrically-alterable ROM (EAROM) or the combination of flash memory or two or more the above.
Processor 402 is run and executable program generation by reading the executable program code stored in memory 401
The corresponding program of code, to take liquid test method for executing in above-mentioned each embodiment.
In one example, liquid equipment 400 is taken to may also include communication interface 403 and bus 404.Wherein, as shown in Figure 10,
Memory 401, processor 402, communication interface 403 connect by bus 404 and complete mutual communication.
Communication interface 403 is mainly used for realizing in the embodiment of the present application between each module, device, unit and/or equipment
Communication.It can also the access input equipment of communication interface 403 and/or output equipment.
Bus 404 includes hardware, software or both, and the component of liquid equipment 400 will be taken to be coupled to each other together.For example
Rather than limit, bus 404 may include accelerated graphics port (AGP) or other graphics bus, enhancing Industry Standard Architecture (EISA)
Bus, front side bus (FSB), super transmission (HT) interconnection, the interconnection of Industry Standard Architecture (ISA) bus, infinite bandwidth, low pin count
(LPC) bus, memory bus, micro- channel architecture (MCA) bus, peripheral component interconnection (PCI) bus, PCI-Express
(PCI-X) bus, Serial Advanced Technology Attachment (SATA) bus, Video Electronics Standards Association part (VLB) bus or other conjunctions
The combination of suitable bus or two or more the above.In a suitable case, bus 404 may include one or more
Bus.Although specific bus has been described and illustrated in the embodiment of the present application, the application considers any suitable bus or interconnection.
One embodiment of the invention also provides a kind of storage medium, is stored with program on the storage medium, and the program is processed
Device can be realized in above-mentioned each embodiment when executing takes liquid test method.
The various pieces of this specification are all made of progressive mode and are described, same and similar portion between each embodiment
Dividing may refer to each other, and what each embodiment introduced is and other embodiments difference.Implement especially for device
For example, apparatus embodiments and storage medium embodiment, since it is substantially similar to the method embodiment, so the comparison of description is simple
It is single, referring to the explanation of embodiment of the method part in place of correlation.
More than, the only specific embodiment of the application, but the protection scope of the application is not limited thereto, and it is any to be familiar with
Those skilled in the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all cover
Within the protection scope of the application.Therefore, the protection scope of the application should be subject to the protection scope in claims.
Claims (9)
1. one kind takes liquid test method characterized by comprising
Measurement parameter of probe during once taking liquid is obtained, the measurement parameter is the parameter for causing probe signals to change；
According to the measurement parameter it is described once take liquid during variable quantity and decision threshold, determine and described once take liquid mistake
Take whether liquid succeeds in journey, it is described that the variable quantity during liquid is once taken to take liquid finish time to default to leave liquid level including default
The variable quantity of the measurement parameter at moment.
2. the method according to claim 1, wherein the decision threshold includes variable quantity threshold value；
It is described according to the measurement parameter it is described once take liquid during variable quantity and decision threshold, determine and described once take
Take whether liquid succeeds during liquid, comprising:
It is described to default the measurement parameter for taking liquid finish time and described default the measurement parameter for leaving the liquid level moment
Variable quantity is greater than or equal to the variable quantity threshold value, it is determined that takes liquid success；
It is described to default the measurement parameter for taking liquid finish time and described default the measurement parameter for leaving the liquid level moment
Variable quantity is less than the variable quantity threshold value, it is determined that liquid is taken to fail.
3. the method according to claim 1, wherein described, once to take the variable quantity during liquid further include described
Default the variable quantity of the measurement parameter not in contact with the liquid level moment to the default contact liquid level moment；The decision threshold includes product
Divide regulating error threshold value；
It is described according to the measurement parameter it is described once take liquid during variable quantity and decision threshold, determine and described once take
Take whether liquid succeeds during liquid, comprising:
Obtain it is described default take liquid finish time to it is described default leave the liquid level moment the measurement parameter variable quantity and when
Between the first relation function integral；
Obtain it is described default not in contact with the liquid level moment to it is described default contact the liquid level moment the measurement parameter variable quantity with
The integral of the second relation function of time；
It is closed if the difference that the integral of first relation function adjusts threshold value with the integral error is less than or equal to described second
It is the opposite number of the integral of function, and the adduction that the integral of first relation function adjusts threshold value with the integral error is greater than
Or the opposite number of the integral equal to second relation function, it is determined that take liquid success；
If the difference that the integral of first relation function adjusts threshold value with the integral error is greater than second relation function
The opposite number of integral or the integral of first relation function adduction that adjusts threshold value with the integral error be less than described the
The opposite number of the integral of two relation functions, it is determined that liquid is taken to fail.
4. the method according to claim 1, which is characterized in that the measurement parameter includes capacitor, electricity
It is resistance, inductance, pressure, one or more in the frequency of oscillation of probe signals.
5. one kind takes liquid test device, which is characterized in that including taking liquid test circuit and probe；
The probe is for taking liquid；
Described that liquid test circuit is taken to be used to obtain measurement parameter of probe during once taking liquid, the measurement parameter is to cause
The parameter of probe signals variation；And for according to the measurement parameter it is described once take liquid during variable quantity with sentence
Determine threshold value, determine that described once take during liquid takes whether liquid succeeds, described once to take the variable quantity during liquid include default
Liquid finish time is taken to leave the variable quantity of the measurement parameter at liquid level moment to default.
6. device according to claim 5, which is characterized in that the decision threshold includes variable quantity threshold value；
It is described take liquid test circuit include detecting module, the detecting module is used for:
In the measurement parameter defaulted and the measurement parameter of liquid finish time and the default is taken to leave the liquid level moment
Variable quantity, be greater than or equal to the variable quantity threshold value in the case where, determine take liquid success；
In the measurement parameter defaulted and the measurement parameter of liquid finish time and the default is taken to leave the liquid level moment
Variable quantity, be less than the variable quantity threshold value in the case where, determination take liquid to fail.
7. device according to claim 5, which is characterized in that described once to take the variable quantity during liquid further include described
Default the variable quantity of the measurement parameter not in contact with the liquid level moment to the default contact liquid level moment；The decision threshold includes product
Divide regulating error threshold value；
It is described take liquid test circuit include detecting module, the detecting module is used for:
Obtain it is described default take liquid finish time to it is described default leave the liquid level moment the measurement parameter variable quantity and when
Between the first relation function integral；
Obtain it is described default not in contact with the liquid level moment to it is described default contact the liquid level moment the measurement parameter variable quantity with
The integral of the second relation function of time；
It is less than or equal to described second in the difference that the integral of first relation function adjusts threshold value with the integral error to close
It is the opposite number of the integral of function, and the adduction that the integral of first relation function adjusts threshold value with the integral error is greater than
Or in the case where the opposite number equal to the integral of second relation function, determines and take liquid success；
It is greater than second relation function in the difference that the integral of first relation function adjusts threshold value with the integral error
The opposite number of integral or the integral of first relation function adduction that adjusts threshold value with the integral error be less than described the
In the case where the opposite number of the integral of two relation functions, it is determined that liquid is taken to fail.
8. the device according to any one of claim 5 to 7, which is characterized in that the measurement parameter includes capacitor, electricity
It is resistance, inductance, pressure, one or more in the frequency of oscillation of probe signals.
9. device according to claim 5, which is characterized in that the probe is the double-deck probe, wherein the bilayer probe
Internal layer with it is described take liquid test circuit be connected, it is described bilayer probe outer layer with reference to connect, it is described reference and power supply
Ground isolation.
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