CN1871510A - Device for judging types of liquid in container and control method therefor - Google Patents

Device for judging types of liquid in container and control method therefor Download PDF

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Publication number
CN1871510A
CN1871510A CN 200480025330 CN200480025330A CN1871510A CN 1871510 A CN1871510 A CN 1871510A CN 200480025330 CN200480025330 CN 200480025330 CN 200480025330 A CN200480025330 A CN 200480025330A CN 1871510 A CN1871510 A CN 1871510A
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container
liquid
electrode
support means
plate electrode
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CN 200480025330
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CN100460869C (en
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安部健
篠泽康彦
町田智英
山田浩一郎
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Tokyo Gas Co Ltd
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Tokyo Gas Co Ltd
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Abstract

A device for judging the types of liquid in a container applicable to various shapes of a container and applicable even when a residual amount in a container differs, and a judging method. A device for judging the types of liquid in a container comprising a flat-plate capacitor (1) having two flat-plate electrodes (1a, 1b) facing each other, a container supprt member (3) for supporting a non-conductive container (2), able to store liquid therein, in regions other than a region held between the electrodes (1a, 1b), an oscillation circuit (4) including the capacitor (1), and a control unit (5) for detecting an oscillation frequency, the the container support member (3) adjusting the distance from the electrode (1a) to the container (2) according to the size of the container (2). A third electrode (18) at the same potential as the electrode (1b) is disposed in contact with the bottom of the container (2).

Description

A kind of device and control method thereof that is used to judge the kind of liquid in the container
Technical field
The present invention relates to a kind of device and control method thereof that is used to judge the kind of liquid in the container, and the present invention is for being applied to judge that whether liquid in the container be that principal ingredient is that the field of harmless liquid of water is especially effective.
Background technology
In the carriage of passengers of aircraft, train, motorbus and other form, obligatedly guarantee to transport safely the passenger.Especially for aircraft,, therefore must apply high alert to security because its mishap meeting brings massive losses.Thereby utilize the roentgenograph X device that the passenger of airplane is carried out baggage check, utilizes metal detector or physical examination to carry out physical examination, and inquire in case of necessity etc., so that distinguish spiteful passenger and forbid such passenger's airplane.Yet, considering most of passengers and make things convenient for the passenger, all passengers are carried out narrow examination and inquire is difficult, this need spend the plenty of time.And spiteful passenger (for example terrorist) can take in the aircraft by such inspection and with dangerous goods as far as possible.Although for can problem taking place by the dangerous goods that the baggage check device of present use is found, but can not be by metal detector or the detected dangerous goods of roentgenograph X device, for example gasoline or other flammable liquid etc. are difficult to be detected.Gasoline and other dangerous liquid can easily obtain on market, and when the container (for example PET bottle) that such dangerous liquid is charged into the beverage of selling on the market is middle, be difficult to itself and real beverage are distinguished, and such behavior is considered to the hazardous act that spiteful people habitually practises.Therefore must take into full account the countermeasure that resists this hazardous act.
For with dangerous liquid, gasoline etc. for example, with principal ingredient be that the beverage of water distinguishes, have various differentiating methods, for example sensing detection method is wherein distinguished smell etc.Yet,, therefore, preferably check apace in non-contacting mode because the baggage check when airplane requires the speed of inspection.For quick and non-contacting inspection method, exist some to utilize the method for the difference of liquid dielectric.And the specific inductive capacity of water is higher, and the specific inductive capacity of gasoline and other dangerous liquid is lower usually.Therefore can consider that such difference in dielectric constant judges kind of liquid.
In patent documentation 1, a kind of method and apparatus of judging the kind of liquid of container from the outside is disclosed.In the described technology of the document, internal tank is filled with liquid, and pair of electrodes is placed on the outside of container, so that at least a portion of liquid is sandwiched wherein, and the electric capacity of measuring the capacitor that is formed by described electrode is judged the type of liquid.When this technology of use, measure in advance at liquid and be the electric capacity under the situation of water and be electric capacity under the situation of dangerous liquid (for example gasoline) at liquid, then by be full of the container of unknown liquid and under this state, measure electric capacity placing between the electrode, can be at once and judge the type of liquid in container exactly.
The patent documentation disclosure on the 1st is unexamined patent application No.2001-272368 not
Summary of the invention
Yet there is following problem in the kind of liquid determination methods of the technology of above-mentioned patent documentation 1.At first, the size of container and the amount of liquid in the container must be fixed.As everyone knows, when between the electrode that dielectric body is inserted capacitor, capacitance is according to change in dielectric constant.Although the technology of patent documentation 1 is used this principle really, if when shape of dielectric body (width or thickness) or position change, electric capacity also can change.Therefore, if will learn the specific inductive capacity of the dielectric body of inserting the capacitor electrode interpolar from the measurement of electric capacity, the then necessary fixedly shape and the position of dielectric body.In the technology of patent documentation 1, this just means the shape and the position of container and charges into the interior amount of liquid of container and must fix.Therefore, as mentioned above, when the technology of the document is applied in the air baggage inspection, difficult basically.That is, the passenger with beverage charged in the PET bottle of different shape, and surplus is also different and fixing.Therefore can under the situation of very restriction, use in the technology described in the list of references (for example place electrode cooperate the situation of the PET bottle etc. of special shape), and can not be used for adapting to the inspection of the shape of various containers, can not be used for the inspection under the different situation of liquid in container surplus.
The purpose of this invention is to provide a kind of device and determination methods that is used to judge the kind of liquid in the container, it can be applied in the container of different shape, and can be applied in the different various situations of residual liquid quantity in container.Its surplus when liquid in container particularly, the purpose of this invention is to provide a kind of device, even more still can be judged the kind of liquid in the container with sensitivity.
Below be the present invention disclosed in this specification.That is, a kind of of a first aspect of the present invention is used to judge that the device of liquid in container type comprises among the application: plate condenser, and it has two plate electrodes placing with relative mode; And receptacle support means, it keeps nonconducting container in the zone except the zone folded by described two plate electrodes, and described container can receiving fluids; And electric capacity by detecting described capacitor or the oscillation frequency that comprises the oscillatory circuit of described capacitor are judged the type of the liquid in the described container.
The a kind of of another aspect of the present invention in this application (second aspect) is used to judge that the device of liquid in container type comprises: plate condenser, and it has two plate electrodes placing with relative mode; Receptacle support means, it keeps nonconducting container in the zone except that the zone folded by described two plate electrodes, and described container can receiving fluids; And the third electrode except that described two plate electrodes, it is the electrode that is positioned at described external container, and by the part setting along described container, the liquid in the described container is maintained on the described part owing to gravity; And electric capacity by detecting described capacitor or the oscillation frequency that comprises the oscillatory circuit of described capacitor are judged the type of the liquid in the described container.
For the device that is used to judge the liquid in container type of the present invention first and second aspects, container is not placed between the electrode of capacitor but is placed on described electrode outside.Therefore, compare, can diminish by the variable quantity of the caused condenser capacity in position of the container of receiving fluids with the situation that container is placed between the electrode.Yet compare with the situation that container is placed between the electrode, can make because the ratio of the container shapes and the different caused electric capacitance change of liquid in container amount becomes less.This be because, the present invention does not have the electric field of use between the electrode of capacitor (promptly, the parallel electric field zone, it is the electric field of electric field intensity maximum) detect the variation of electric capacity, and be to use from the electric leakage field (its electric field ratio parallel electric field zone is low) that spills between the electrode of capacitor.Because the field is normally dispersed in the electric leakage field, and is therefore weak more away from this capacitor electrode field strength more.Position by design containers (for example, by being placed as, container make container big more, it is more away from capacitor), and, because the remaining liq in the container concentrates on container bottom, by capacitor being placed on the below of container, can make because the large percentage ground of container shapes and the caused capacitance variations of liquid in container surplus reduces.In other words, can weaken of the dependence of the amount of the line of electric flux by the liquid that will detect as much as possible to container shapes and residual liquid quantity.By this set, the present invention can fast and accurately judge the type of liquid in container, even when container shapes and the variation of liquid in container surplus.
In addition, a second aspect of the present invention also has third electrode except two plate electrodes that form capacitor.This third electrode is placed on the outside of container along the part of container, the liquid in the container is because gravity is maintained on this part, and described third electrode has the leakage effect of electric field of guiding capacitor on the flow direction in container.Here, " liquid in container is because gravity is held part thereon " is, for example, container be set to its horizontal surface upper side down or tilt and situation that capacitor is placed along this horizontal surface or inclined surface under, this part is corresponding with the basal surface and the side surface (not being the side surface of placement container) of container.Under the situation that container is vertically placed, the side surface of container bottom is corresponding with above-mentioned part.By placing such third electrode, can be directed to container bottom (this part is the maintained part of liquid in container) in the electric leakage field of self-capacitance device in the future along gravity direction, and the electric capacitance change according to the capacitor of liquid in container type can be detected and be bigger variation, that is, improved the degree of accuracy of judging kind of liquid.
Described third electrode can be plate electrode or line electrode, and it is placed along such surface, described surface be perpendicular to described plate condenser plane surface and with the outer side contacts of described container.Although the position of third electrode and shape can be provided with arbitrarily, as long as it is placed along the part that liquid in container was detained, but when third electrode is the plate electrode that is provided with along the plane vertical with plate condenser, can realize being suitable for supposing electrode setting as the PET doleiform shape of container.Electrode shape needn't be a tabular, can use wire electric wire (being lead) as electrode.
In addition, can be set to by third electrode, when detecting the described container that is placed on the described receptacle support means or when the time, move to the outside surface of described container with the described container interlock that is placed on the described receptacle support means.That is, third electrode needn't be fixed, and can be configured to movably, when detecting placement to described container with box lunch or when with to the placement interlock of described container the time, with its outer wall setting along container.For example, use optoelectronic switch etc. to detect on receptacle support means placement, and third electrode can be driven and be moved so that contact with the outer wall of container by drive unit to container.Perhaps, suitable mechanical mechanism can be set,, and the third electrode that links with this mechanical mechanism be moved so that contact with the outer wall of container with actuating when being placed on container on the receptacle support means.Under the transportable situation of these third electrodes, can mobile third electrode so that touch or near the outer wall of container, and do not rely on the shape and size of container.
In addition, can make the voltage of third electrode and the absolute value of the voltage of the plate electrode of capacitor (first plate electrode) and in the phase place one or two different, this first plate electrode is placed on described container one side; Or identical with the voltage of second plate electrode of capacitor, this second plate electrode is relative with described first plate electrode.Usually, in order to check electric capacity or configuration oscillatory circuit, between the plate electrode of capacitor, apply AC voltage.Make an electrode of capacitor apply this AC voltage, and in the present invention, become ground-electrode at electrode (second electrode) away from container one side as benchmark (ground connection usually).Here, in the present invention, one or two in the absolute value of the voltage that makes third electrode and the amplitude of the first plate electrode voltage and phase place is different.Particularly, make the voltage (electromotive force) of third electrode identical with the voltage (electromotive force) of second plate electrode.By the electromotive force of third electrode is set like this, can guide the liquid of electric leakage field in container from capacitor.
In addition, aspect of the present invention above-mentioned first and second, can described receptacle support means be set to the distance of adjusted size from first plate electrode to described container according to described container, first plate electrode is positioned at a side of described container in described two plate electrodes.In the present invention, receptacle support means is according to the distance of adjusted size from capacitor to described container of described container.Therefore, can when container is big more, container be placed as more away from capacitor, to such an extent as to even when container dimensional changes, the line of electric flux that passes liquid can become approaching and immobilize, and can reflect the variation of the specific inductive capacity of liquid in changes in capacitance.
Particularly, when, for having container cylindrical or rectangle cylindricality profile, the column direction of container is set to when parallel with first plate electrode, receptacle support means can have two stepped parts, it raises along the direction vertical with described first plate electrode, and, distance between the described container and first plate electrode can be passed through, described outer fringe surface cylindrical or the rectangle cylindrical container is contacted with the step or the marginal portion of two stepped parts, and adjust according to the size of described container.In addition, step components can be placed on along a side of the step of column direction extension, and the profile of container is arranged to and can be contacted with the step of two stepped parts, make for bigger container, the one end is raised by step components, thereby has increased to the mean distance of first plate electrode.
In the present invention, term " parallel " is not represented strict " parallel " and " vertical " with " vertically ".Strict " vertically " and " parallel " expression plane or straight line are spent crossing with another plane or straight line with 90 of strictness or to arrive infinite distant place all non-intersect.Yet, because when actual placing component, obviously there are placement error and process errors to parts, will allow in this manual from the skew (within the specific limits) of 90 degree.Also can think, even the situation that the angle between the parts is had a mind to be offset from perpendicular or parallel state, as long as this situation falls into main idea of the present invention, promptly, utilize the main idea of the type of electric leakage field measurement liquid in container, then it also is comprised in the scope of " vertically " or " parallel ".For example, in this manual, with the position relationship description between the parts for the situation of " vertically " comprises strict 90 degree and comprise 90 degree intentionally or unintentionally among a small circle.
Perhaps, when, cylindrical for having, the rectangle cylindricality, or the container of spherical shape, the column direction of container is arranged to when vertical with first plate electrode, receptacle support means can have the structure that is centered on by stepped parts, it raises along the direction vertical with described first plate electrode, and, distance between described container and described first plate electrode can be passed through, the basal surface of described rectangle cylindricality or hydrostatic column is contacted with the step of stepped parts, or the outer fringe surface of described spherical container is contacted with the marginal portion of described step, and adjust according to the size of described container.
Perhaps, when, for having container cylindrical or rectangle cylindricality profile, the column direction of container is arranged to when parallel with described first plate electrode, described receptacle support means can have groove, it has V-arrangement cross section and opening on the direction perpendicular to first plate electrode, and, distance between described container and described first plate electrode can be passed through, described outer surface cylindrical or the rectangle cylindrical container is contacted with the surface of described V-shaped groove, and adjust according to the size of described container.
Perhaps, when, the container of, rectangle cylindricality cylindrical or spherical shape for having, the column direction of cylindrical or rectangle cylindricality is arranged to when vertical with described first plate electrode, described receptacle support means can have tapered opening on the direction perpendicular to described first plate electrode, and, distance between described container and described first plate electrode can be passed through, the described cylindrical or basal surface marginal portion of rectangle cylindrical container or the outer fringe surface of spherical container are contacted with the wall surface of described tapered opening, and adjust according to the size of described container.
Be well known that, the variation that the variation of electric capacity that not only can be by capacitor comes the tracer liquid specific inductive capacity, the variation of the oscillation frequency of oscillatory circuit that can also be by comprising capacitor detects the variation of the electric capacity of capacitor.
In addition, in the invention described above, can be set to by the said vesse bracing or strutting arrangement, from perpendicular to the described container of the normal direction projection of first plate electrode and the overlapping area of described plate electrode, first plate electrode is positioned at a side of described container in described two plate electrodes according to the adjusted size of described container.As the situation of the distance of above-mentioned adjustment, also use the electric leakage field of capacitor in this case from first plate electrode to said vesse.Yet this situation is different from above-mentioned situation, wherein by adjusting the overlapping area between capacitor and the container, make the line of electric flux number that passes liquid in container near immobilizing, thereby adjusts to the distance of container.Can obtain effect same as described above by this invention.
Particularly, when, the container of, rectangle cylindricality cylindrical or spherical shape for having, the column direction of cylindrical or rectangle cylindricality is arranged to when parallel with described first plate electrode, described receptacle support means can have with respect to the acutangulate inclined surface of described first plate electrode, and, the overlapping area of described container and described plate electrode can be passed through, the bottom margin part of described rectangle cylindricality or hydrostatic column or the outer fringe surface of spherical container are contacted with described inclined surface, and adjust according to the size of described container.Perhaps, when, cylindrical for having, the rectangle cylindricality, or the container of spherical shape, described column direction cylindrical or the rectangle cylindricality is set to when parallel with described first plate electrode, described receptacle support means can have stepped parts, it raises along the direction parallel with described first plate electrode, and, the described overlapping area of described container and described plate electrode can be passed through, the basal surface of described rectangle cylindricality or hydrostatic column is contacted with the step of described stepped parts, or the outer fringe surface of described spherical container is contacted with the marginal portion of described step, and adjust according to the size of described container.
In addition, keeping under the container situation parallel with first plate electrode, the said vesse bracing or strutting arrangement can be with predetermined angle incline with respect to the horizontal plane, and keeps the relative position of described container and plate electrode.This set provides the effect that makes liquid concentrate on container bottom and do not change the overlapping area of distance between above-mentioned plate electrode and the container or plate electrode and container, thereby and provides when amount of liquid and make judgement advantage more accurately after a little while.
Above-mentioned first and second aspects of the present invention also comprise: sensor, and it is used to detect described container and whether is placed on described receptacle support means; Pick-up unit, its be used to detect the electric capacity of the described capacitor when described container is not placed on the described receptacle support means or described oscillatory circuit oscillation frequency, and the oscillation frequency of the electric capacity of the described capacitor when described container is placed on the described receptacle support means or described oscillatory circuit between variable quantity; And notifying device, whether it is used to notify described variable quantity greater than predetermined threshold.In this case, can measure before placing container and the electric capacity of capacitor afterwards or the variation on the oscillation frequency, and for example, at (in the time can thinking that the principal ingredient of liquid is water) under the situation of variable quantity greater than threshold value, can send the notice of normal condition, and be not more than under the situation of this threshold value (in the time can thinking at least that the principal ingredient of liquid is not water) at variable quantity, can send the notice of abnormality.Can enumerate display notification by light-emitting component or display device, the sound notification by sound, the notice by vibration or other oscillation form or the like, as the example of notice form.
Above-mentioned first and second aspects of the present invention also comprise: memory storage, and it is used to write down the electric capacity of the described capacitor when described container is not placed on the described receptacle support means or the oscillation frequency of described oscillatory circuit; And updating device, it is used for being updated periodically described electric capacity or the oscillation frequency that is recorded in described memory storage.In this case, calibrate over time according to the electric capacity of capacitor.
In addition, the method that is used to control the device that is used to judge the liquid in container type of the present invention is a kind of method that is used for control device, described device is used to judge the liquid in container type and comprises: plate condenser, and it has two plate electrodes placing with relative mode; Receptacle support means, it keeps nonconducting container in the zone except the zone folded by described two plate electrodes, and described container can receiving fluids; Pick-up unit, the oscillation frequency that it is used to detect the electric capacity of described capacitor or comprises the oscillatory circuit of described capacitor; And sensor, it is used to detect described container and whether is placed on described receptacle support means, and described method comprises: first detects step, is used to detect described container and is not placed on described receptacle support means; First measuring process wherein, when having carried out the detection of the described first detection step, is measured the electric capacity of described capacitor or the oscillation frequency of described oscillatory circuit; Second detects step, is used to detect described container and is placed on described receptacle support means; Second measuring process wherein, when having carried out the detection of the described second detection step, is measured the electric capacity of described capacitor or the oscillation frequency of described oscillatory circuit; And notifying process, be used for notifying difference in electric capacity that described first measuring process is measured or oscillation frequency and electric capacity of in described second measuring process, measuring or oscillation frequency whether greater than predetermined threshold.By having such setting, can after placing container, measure immediately, and for example judge liquid in container whether safely (being to be the liquid of principal ingredient with water).
Said method also comprises: the 3rd measuring process, and it through after the schedule time, measures the electric capacity of described capacitor or the oscillation frequency of described oscillatory circuit after described first measuring process; And following step, wherein, if the absolute value of electric capacity of measuring in described first measuring process or oscillation frequency and electric capacity of measuring in described the 3rd measuring process or the difference between the oscillation frequency is bigger than predetermined value, then repeat described first measuring process and described the 3rd measuring process, and, if the absolute value of described difference is not more than described predetermined value, then wait for being placed on the detection of the described container on the described receptacle support means, and through repeating the step from aforementioned first measuring process after the schedule time.In this case, when liquid in container not being measured, can automatically perform calibration.
Description of drawings
Fig. 1 is the block scheme that the profile instance of the device that is used to judge the liquid in container type is shown, and it is embodiments of the invention;
Fig. 2 is used to explain by judge the process flow diagram of the method example of liquid in container as the device that is used to judge the kind of liquid in the container of the embodiment of the invention;
Fig. 3 is the zoomed-in view of container support parts 3 and container 2;
Fig. 4 shows for difform container, the curve map that the oscillation frequency of the measurement device by present embodiment changes;
Fig. 5 shows no matter Container Type and how to keep the curve map that oscillation frequency changes under the constant situation of fixed distance from the capacitor to the container;
Fig. 6 shows another example of container support and container;
Fig. 7 shows another example of container support and container;
Fig. 8 shows another example of container support and container;
Fig. 9 shows another example of container support and container;
Figure 10 shows another example of container support and container;
Figure 11 shows another example of container support and container;
Figure 12 is the block scheme that the profile instance of the device that is used to judge the liquid in container type is shown, and it is an alternative embodiment of the invention;
Figure 13 shows third electrode part among the embodiment 2 in the amplification mode;
Figure 14 shows the curve map of the data instance of the effect of verifying embodiment 2;
Figure 15 shows the curve map of another data instance of the effect of verifying embodiment 2;
Figure 16 shows another example of third electrode among the embodiment 2;
Figure 17 shows another example of third electrode among the embodiment 2;
Figure 18 shows another example of third electrode among the embodiment 2;
Figure 19 shows another example of third electrode among the embodiment 2.
Specific embodiment
To describe embodiments of the invention with reference to the accompanying drawings in detail now.
(example 1)
Fig. 1 is the block scheme of example that the configuration of the device that is used to judge the liquid in container type is shown, and it is one embodiment of the present of invention.Being used to of present embodiment judges that the device of liquid in container type has the container support 3 of capacitor 1, support vessels 2, oscillatory circuit 4, control section 5, LED display device 6a, 6b, 6c and container sensor 7a and 7b.Oscillatory circuit 4 comprises capacitor 1, capacitor 8, coil 9 and NOT circuit 10a and 10b, and control section 5 comprises CPU (CPU (central processing unit)) 11, impulse meter 12, container testing circuit 13, timer 14, RAM (random access memory) 15, ROM (ROM (read-only memory)) 16 and display control circuit 17.
Capacitor 1 is a plate condenser, and it has the plate electrode 1a and the 1b of two parallel placements.The material of plate electrode is not made particular restriction, as long as it can conduct electricity.The size of each plate electrode 1a and 1b is 5cm * 12cm for example, and electrode gap is 5mm for example.Between electrode, can not insert anything (promptly only having air state) or can insert the material of plastics or other low-k.Although use plane-parallel capacitor 1 here as an example, in described plane-parallel capacitor 1 with the parallel placement of plate electrode 1a, for not had particular requirement by the plate electrode 1a and the 1b of parallel placement with 1b.
Container 2 for example is the PET bottle, and it is the container of the beverage sold on a kind of market.This container also can be the container that is formed by other material, for example vial.But container 2 must be formed and the dielectric body of low-k preferably by non-conducting material.Although use the rectangular column shapes of containers here as an example, this container as mentioned below can be for cylindrical or spherical.The liquid of being checked is accommodated in this internal tank.
Container support 3 is the parts according to container dimensional support vessels 2.Container support 3 must be made and the dielectric body of low-k preferably by non-conducting material.Container support 3 will be described in detail later.Although in the present embodiment, such example has been described, wherein container 2 is positioned at the top of container support 3 and capacitor 1 is placed the below of container support 3, but upper and lower, left and right position relation is not made particular restriction, as long as the mechanism that exists relative container support 3 to promote (push) containers 2.
Oscillatory circuit 4 is such oscillatory circuits, and in this circuit, oscillation frequency changes when the electric capacitance change of capacitor 1.This oscillatory circuit is basically to be vibrated by the electric capacity of capacitor 1 and capacitor 8 and the determined resonant frequency of inductance value of coil 9.This vibration is by NOT circuit 10a and the 10b form output with pulse voltage, and oscillation frequency by impulse meter 12 at the fixed time in (for example, 1 second) umber of pulse of counting determine.
The device that is used to judge the liquid in container type of control section 5 these embodiment of control.CPU11 is a general processor, and can be according to the preset program executive process.Impulse meter 12 is by CPU11 control, and the step-by-step counting to exporting from oscillatory circuit 14.Container testing circuit 13 control container sensor 7a and 7b, and whether detection receptacle 2 is placed on the container support 3.Timer 14 is controlled by CPU11, and is used to measure elapsed time.RAM15 is the data apparatus for temporary storage.It preserves program and the data of downloading from ROM16, and guarantees employed workspace when this program of execution.To in this device, used program and data be recorded among the ROM16.Can use hard disk unit or other memory storage to replace ROM16.Display control circuit 17 control LED display device 6a, the demonstration of 6b and 6c.
As mentioned below, LED display device 6a, 6b and 6c show the state of apparatus of the present invention and by the measurement result to container 2 interior kind of liquid that this device obtained.For example, LED display device 6a is green, and LED display device 6b is blue, and LED display device 6c is red.Although described such example here, wherein, can use any advice method that other is fit to and replace by the state and the measurement result of LED display device 6a, 6b and 6c notice (demonstration) this device.For example, can use the advice method by liquid crystal display displays message, hummer is at advice method that detects sounding when unusual etc.
Container sensor 7a and 7b are used for detection receptacle 2 to be placed to sensor on the container support 3.As an example, can enumerate and have as the sensor 7a of luminous component with as the optical sensor of the sensor 7b of light receiving part.The sensor that can also use similar sensor or other type instead.
Fig. 2 is the process flow diagram that is used for explaining the method example of judging liquid in container, and this method is used the device that is used for judging the kind of liquid in the container of present embodiment.For following process, its step can realize by computer program, and this program is recorded in the above-mentioned ROM16.According to this description,, think that then this program comprises the part of the inventor's device as long as program is recorded in ROM16 or other memory storage.And, although in the following description,, obviously, can realize identical process by the control device that utilizes sequential control, the automatic control of hardware etc. with the example of describing by the computer program executive process.
At first in step 20, judge whether to detect container.If detect container here, then repeating step 20 is up to not detecting container.If do not detect container, then enter step 21.
In step 21, carry out frequency measurement.For frequency measurement, determine the suitable cycle, for example one second, and measure the pulse number in this cycle, go out by the impulse meter meter.Can determine oscillation frequency by determine the umber of pulse that per second is counted from measured value.Will be here determined oscillation frequency for example be recorded among the RAM15 with variables A.
Next, carry out and wait for, for example 0.5 second (step 22), and then measure oscillation frequency (step 23).Measured oscillation frequency is recorded as variable B.Whether definite then A that is write down and poor (A-B) between the B judge its absolute value greater than predetermined value, for example 5Hz (step 24).If should be poor greater than predetermined value, it be unstable then to judge this device, returns step 21, repeats same process.
If judge this difference less than predetermined value in step 24, it is stable and open green light (step 25) then to judge this device.Bright by confirming green light, the operating personnel of this device can confirm that this device can use.
When green light is bright, activates timer, and judge whether to have passed through for example three minutes (step 26).If passed through three minutes, then repeat from the process of step 21 to judge whether this device is stable.If in step 26, judge, then enter step 27, and enter the process of detection and measuring vessel not through three minutes.Although with three minutes examples as the elapsed time, this only was an example here.Time that betwixt can pick-up unit stability is set at three minutes simply, can suitably be set this time according to the stability of device.
In step 27, judge whether to detect container, if do not detect container, then return in the step 26 and the repetition said process.If detect container, then measure oscillation frequency and measurement result is recorded as variable C (step 28).
Determine poor between variable B and variable C then, and judge this difference be greater than or less than predetermined threshold value (step 29).As mentioned above, when container was not set, the value of variable B was an oscillation frequency, and when the value that container variations per hour C is set be the value of oscillation frequency.If container contents is received the liquid of some form, because the specific inductive capacity of liquid is greater than the specific inductive capacity of air, then the value of C will be less than B.Simultaneously, if this container holds the liquid that principal ingredient is a water, because glassware for drinking water has than gasoline or the high specific inductive capacity of other dangerous liquid, then the electric capacity of capacitor 1 will become greatly, and oscillation frequency is with step-down, and therefore the value of B-C will become big.On the contrary, if this container contents is received gasoline or other dangerous liquid, then compared with the above case, the electric capacity of capacitor 1 will diminish, and therefore the value of B-C will diminish.Threshold value is set to and these situations can be distinguished a value that come.
Therefore, if in step 29, find B-C greater than this threshold value, the liquid that then can judge in this container is that a kind of principal ingredient is the safe liquid of water and makes Lan Dengliang (step 30).On the contrary, if B-C is not more than this threshold value in step 29,, then make the red light bright (step 31) of display abnormality state owing to can not judge that the liquid in this container is that a kind of principal ingredient is the safe liquid of water.After step 30 and 31, turn back to step 20, and repeat said process.Thereby can judge the kind of liquid in this container.
Fig. 3 shows the zoomed-in view of container support 3 and container 2.The figure on top is a front elevation, and the figure of bottom is a vertical view.Shown in the figure on the top of Fig. 3, container support 3 has stepped parts, its relative to each other placed and be provided so that littler container 2c will be placed on the step of below, on the step of container 2 in the middle of will being placed in and bulk container 2b will be placed on the step of the top.That is,, be respectively L1, L2 and L3 with the distance of plate electrode 1a according to the size of container.Because being arranged so that the size of container is big more, container support 3 then becomes big more, therefore owing to can be fixed and not be fixed against the size of this container basically from the line of electric flux that leakage electric field produced of capacitor 1 with the distance of capacitor 1.This means that the size that can not rely on container judges the type of liquid in container.And, because container support 3 (container 2) is positioned at the outside of capacitor 1, therefore use the electric leakage field of capacitor 1 to measure.Because more near capacitor 1, electric leakage is strong more, and therefore the contribution to electric capacitance change is bigger in the bottom of container, in the top of container relatively a little less than.Thereby, even the surplus of liquid in container not enough half, or the like because liquid is positioned at the bottom, so liquid can be measured to.Therefore can not rely on the measurement of liquid in container surplus.
Fig. 4 shows for difform container, by the curve map of the measured oscillation frequency variation of the device of present embodiment.Fig. 5 is a comparison diagram, shows the how curve map that changes of fixed condenser oscillation frequency under the situation of the distance of container of no matter Container Type.In Fig. 4 and Fig. 5, the longitudinal axis is represented frequency change, and transverse axis is represented container difference.On transverse axis, the hydrostatic column that 1 expression is 350 milliliters, the hydrostatic column that 2 expressions are 500 milliliters, the rectangle cylindrical container that 3 expressions are 500 milliliters, the rectangle cylindrical container that 4 expressions are 900 milliliters, the hydrostatic column that 5 expressions are 1500 milliliters, 6 represent 1500 milliliters rectangle cylindrical container, and 7 represent 2000 milliliters rectangle cylindrical container.Solid line represents to be equipped with in the container situation of water, and dotted line represents to be equipped with in the container situation of alcohol.In each container, charge into the liquid of max cap. basically.
As shown in Figure 4 and Figure 5, in arbitrary container, when comparing, bigger than the frequency change under the situation of dress alcohol in the frequency change under the situation of dress water with identical container.This reflects the difference of the specific inductive capacity of built-in substance.But, as shown in Figure 5, big than under the situation about charging at Jiang Shui in 5 the container (1500 milliliters hydrostatic columns) of the frequency change under the situation in alcohol being charged into 7 container (2000 milliliters rectangle cylindrical containers).This is illustrated in these containers is charged under the situation of water or alcohol, uses single threshold value can not judge contained material.But, use present embodiment shown in Figure 4, owing to change with the distance of the capacitor size according to container, therefore the frequency change of 7 container (2000 milliliters rectangle cylindrical containers) can be by placing container to such an extent that far become less.Adjust distance according to container dimensional, so that make that the frequency change when charging into alcohol is substantially the same with the frequency change for other container.This can be set to 30mm by the width (distance from its base to capacitor is L1) with first step, the width (distance from its base to capacitor is L2) that second step is come is set to 55mm, and L1=8mm is set, L2=13mm and L3=16mm realize.Thereby, as shown in Figure 4, will be fixed on 3000Hz basically, thereby (for example, whether the content of 3500Hz) judging each container is water can to use single threshold value in the frequency change that each container is charged under the situation of alcohol.
As mentioned above, by using the device of present embodiment, can judge the type (whether the principal ingredient of liquid is water) of liquid in container, and not rely on the shape of container and the surplus of liquid in container.
Although in above-mentioned example, use the example of rectangle cylindricality as the container profile, this profile also can be shown in Figure 6 cylindrical.Even also can adjust in this case, the height of container according to the profile of container.
In addition,, use to have the example of the parts of stepped part, can use the parts with V-arrangement cross section shown in Figure 7 to replace as container support although in above-mentioned example.Also can adjust the height of container in this case according to container dimensional.
In addition, although in above-mentioned example, described the example that a kind of use is measured at the container of its side placement, the container that also can use setting shown in Figure 8 to place is measured.In this case, having shown in enumerating around the configuration of the stepped parts of container bottom example as container support 34.Obviously, in being provided with of Fig. 8, can use cylindrical or spherical container.Also can use parts to replace container support 34 with tapered opening.The cross section of parts with tapered opening profile is with shown in Figure 7 identical, and therefore can easy to understand, in this case also can be according to the height of its adjusted size container.
In addition, in above-mentioned example, the method according to the vertical range of the adjusted size of container and capacitor 1 has been described, as the example of the number basic fixed that makes the line of electric flux that passes liquid in container.But, as shown in Figure 9, optionally, the length L 4 and the L5 of the lap of container and capacitor 1 in the time of can overlooking according to the container dimensional adjustment.In this case, can realize described adjusting by such container support 35, described support member has the inclined surface that tilts in the direction of placing container.
In addition as shown in figure 10, can use the step of step components 36 as stepped parts.In this case, by step components 36 rising container 2b, the size of this container makes its part will be placed on the step components 36, and therefore makes with the mean distance change of capacitor 1 big.Thereby can provide effect same as described above.
In addition as shown in figure 11, container support 3 and 35 can be with respect to the horizontal plane 38 tilts at a certain angle, wherein keeps the relative position of the container 2 and the first plate electrode 1a as shown in figure 11.Because in this case, liquid concentrates on the bottom of container 2, therefore under the low situation of amount of fluid, provides the effect that is used to judge kind of liquid.
(embodiment 2)
Figure 12 is the block scheme of example that the configuration of the device that is used to judge the liquid in container type is shown, and it is an alternative embodiment of the invention.Except having third electrode 18, being used to of this embodiment 2 judges that the device of kind of liquid is identical with the foregoing description 1, thereby omits unnecessary description.Utilize the method for judgement kind of liquid of device of this embodiment 2 identical with the method for the foregoing description 1.
As mentioned above, the device of embodiment 2 has third electrode 18.As shown in figure 13, third electrode 18 is set to contact with the bottom of container 2.Third electrode 18 also is connected with a plate electrode 1b of capacitor 1, and its electromotive force keeps identical with the electromotive force of plate electrode 1b.The electromotive force of plate electrode 1b is ground potential normally.Although will describe such example here, wherein the electromotive force of third electrode 18 is a ground potential, and the electromotive force of third electrode can be determined arbitrarily, as long as this voltage is different with another plate electrode 1a of capacitor 1.Here, with respect to the different expression of voltage amplitude difference, the phase place difference of the AC voltage that is applied to plate electrode 1a, perhaps amplitude is all different with phase place.
By being set to, such third electrode 18 contacts with the basal surface of container 2, described third electrode keeps the electromotive force different with the voltage that is applied to plate electrode 1a, thereby the electric leakage field of self-capacitance device 1 is attracted on the direction of third electrode 18 in the future, and compare with the situation of not placing third electrode 18, big by the dielectric (flux) density change of the liquid in the container 2.The variation of the electric capacity of the capacitor 1 of the difference of the specific inductive capacity of this expression reflection liquid in container becomes big, thereby has improved the degree of accuracy of judging liquid in container.
Figure 14 shows the data instance of the effect of checking embodiment 2.The top variation that illustrates resonant frequency when third electrode 18 is set (frequency change), the following variation that illustrates resonant frequency when third electrode 18 is not set (frequency change).In Figure 14, Container Type 1 is the 900mlPET bottle, and type 2 is 1500ml PET bottles.Show the result that each container is charged into the situation of the water of max cap. basically or alcohol.The shape of capacitor 1 and container support 3, position etc. are identical with embodiment 1.
The result of Figure 14 shows, when third electrode 18 is not provided, the variation of resonant frequency of water and alcohol difference be about 500Hz, and when third electrode 18 was provided, the difference of variation of resonant frequency reached 1kHz, that is, the difference of variation of resonant frequency is approximately double.Thereby this result illustrates, although can both use single threshold decision liquid in container type in both cases, when third electrode 18 was provided, it was bigger to detect tolerance, even and exist noise also can guarantee enough SN ratios.
Figure 15 shows the curve map of another group data of the effect of verifying this embodiment 2.The top variation that illustrates resonant frequency when third electrode 18 is set (frequency change), the following variation that illustrates resonant frequency when third electrode 18 is not set (frequency change).In Figure 15, amount of liquid is illustrated in the state that residual liquid quantity changes in the 500ml PET bottle.Under the situation that third electrode 18 is not set (figure below Figure 15), the residual liquid quantity in 500ml PET bottle has changed resonant frequency significantly according to amount of liquid when 200ml changes between 500ml.Becoming for the frequency change under the situation that has 200ml alcohol is compared to frequency change height under the situation that has 500ml water, thereby can not use single threshold value to judge kind of liquid.Simultaneously, under the situation that third electrode 18 is set (figure above Figure 15), even amount of liquid changes, resonant frequency can significantly not change yet.As a result, though when amount of liquid under the situation that at container is 500ml PET bottle when 200ml changes to 500ml, still can use single threshold value (for example, 3700Hz) to judge the liquid in container type.The device 2 of present embodiment has third electrode 18, thereby shows significant effect under the situation that the liquid in container surplus changes.
For this embodiment 2, described with third electrode 18 be placed as with the contacted situation of outer wall (bottom) of container as an example.Yet third electrode 18 needn't necessarily contact with container outer wall, but can be placed on the position of leaving container.According to the inventor's inspection, if with the distance of container outer wall less than 20mm, can under the measuring condition of above-mentioned Figure 14 and 15, obtain to be provided with the effect of third electrode 18.
In addition, although in present embodiment 2, the situation that third electrode 18 is arranged on container bottom has been described, but optionally, third electrode 18b can be arranged on the lower face side of container side wall, as shown in figure 16, perhaps third electrode 18c can be arranged on the downside of container side wall, as shown in figure 17.That is, even when the raffinate scale of construction in the container 2 is less, if liquid rests on downside owing to gravity and third electrode 18,18b or 18c is arranged near the liquid of this reservation, just enough.By third electrode being placed like this so that make it along the liquid setting that keeps in the above described manner, can be by electric flux that third electrode attracted effectively by the liquid in the container, thus allow to observe the electric capacitance change (variation of resonant frequency of resonant circuit) of capacitor 1 according to kind of liquid.
In addition, although use the example of plate electrode as third electrode in this embodiment 2, the shape of this motor is not limited to plate shaped.That is, can use linear electric wire as third electrode 18, as shown in figure 18, and this electric wire needs not to be single electric wire, and can be a plurality of electric wires.In addition, it is straight that electric wire needs not to be, and also can be arbitrary curve, only need with its along or near the wall surface setting of container 2.
In addition, in this embodiment 2, use the example of fixed electorde as third electrode 18, or the like.Yet it is fixing that third electrode needs not to be, and also can be removable electrode.For example, as shown in figure 19, container support 3 can have the corresponding strong point 41 rotor rotated 40 and respective link 42 and the strong point 44 rotor rotated 43, and third electrode 18e can be assemblied in the top of rotor 43.Rotor 40 and rotor 43 link by connecting rod 42, and when container 2 is not placed on the container support 3, by unshowned spring or other elastomeric element described rotor are remained on by the state shown in the dotted line.When placing container 2, rotor 40 is pushed away under the weight of container self, by moving of connecting rod 42, rotor 43 is in by the state shown in the solid line,, third electrode 18e is placed to the state that leans on mutually with the basal surface of container 2 that is in that is.Be set to movably by third electrode 18e like this, even when the size of container 2 or change of shape, still approximate being placed as with the outer wall of container 2 of third electrode 18e can be contacted.A kind of by linkage assembly third electrode 18e movably disposed although described here, but it is evident that, can adopt such mechanism to replace, the wherein placement by detection receptacle such as optoelectronic switch 2, and wait by the motor that obtains testing result and to drive third electrode 18e.
In addition, although in this embodiment 2, use the profile of rectangle cylindricality as container, this embodiment obviously can be used for as other shapes of containers shown in the example of embodiment 1.
Although above-mentionedly specifically described the present invention, the present invention is not limited to the foregoing description, and obviously, can carry out various modifications in the scope that does not break away from main points of the present invention.For example,, detect the electric capacitance change of capacitor 1, also the direct electric capacity of Measurement of capacitor 1 by oscillatory circuit 4 although in above-mentioned example.
Effect of the present invention
By using the present invention, can provide a kind of for judging the liquid in container type device and declare Disconnected method, it can be applied in the container of various shapes, and can be applied to liquid in container In the different various situations of surplus. Particularly, can provide a kind of device, even described device is worked as When the surplus of liquid in container is less, still can judge with sensitivity the kind of liquid in the container.
Industrial applicability
The present invention relates to a kind of device and control method thereof for judging the liquid in container type, and The present invention judges to being used for whether the liquid in the container is that main component is the field of the harmless liquid of water Especially effective.
Claims
(according to the modification of the 19th of treaty)
1. device that is used to judge the liquid in container type comprises:
Plate condenser, it comprises two plate electrodes relative to each other being placed;
Receptacle support means, it keeps nonconducting container in the zone except that the zone folded by described two plate electrodes, and described container can receiving fluids; And
Third electrode except that described two plate electrodes, it is the electrode that is positioned at described external container, and by the part setting along described container, the liquid in the described container is maintained on the described part owing to gravity,
Wherein, the type of the liquid in the described container is judged by electric capacity that detects described capacitor or the oscillation frequency that comprises the oscillatory circuit of described capacitor.
2. the device that is used to judge the liquid in container type as claimed in claim 1, wherein said third electrode is plate electrode or line electrode, it is placed along such surface, described surface be perpendicular to described plate condenser plane surface and with the outer side contacts of described container.
3. the device that is used to judge the liquid in container type as claimed in claim 2, wherein said third electrode is moved to the outside surface of described container when detecting the described container that is placed on the described receptacle support means or with the described container interlock that is placed on the described receptacle support means time.
4. as each described device that is used to judge the liquid in container type in the claim 1 to 3, it has
Perhaps first be provided with, the voltage of wherein said third electrode is different with the absolute value and/or the phase place of the voltage of first plate electrode of described capacitor, and described first plate electrode is placed on a side of described container,
Perhaps second be provided with, the voltage of wherein said third electrode is identical with the voltage of second plate electrode of described capacitor, and described second plate electrode is relative with described first plate electrode.
5. as each described device that is used to judge the liquid in container type in the claim 1 to 4, wherein said receptacle support means is according to first plate electrode of adjusted size from described two plate electrodes of the described container distance to described container, and described first plate electrode is placed on a side of described container.
6. device that is used to judge the liquid in container type comprises:
Plate condenser, it comprises two plate electrodes relative to each other being placed; And
Receptacle support means, it keeps nonconducting container in the zone except the zone folded by described two plate electrodes, and described container can receiving fluids;
The type of the liquid in the wherein said container judges by electric capacity that detects described capacitor or the oscillation frequency that comprises the oscillatory circuit of described capacitor,
And wherein, described receptacle support means is according to first plate electrode in described two plate electrodes of the adjusted size of described container and the distance between the described container, and described first plate electrode is placed on a side of described container.
7. as claim 5 or the 6 described devices that are used to judge the liquid in container type, wherein said container has cylindrical or prismatic profile and is supported on the described receptacle support means, wherein said cylindrical or prismatic column direction is set to parallel with described first plate electrode, and
Described receptacle support means has two stepped parts, its edge direction vertical with described first plate electrode raises and is placed as toward each other, wherein, when the ridge part of the step of the outer fringe surface of described cylindrical or prismatic container and described two stepped parts or step abutted, the distance between described container and described first plate electrode being adjusted according to the size of described container.
8. the device that is used to judge the liquid in container type as claimed in claim 7, wherein step components is placed on along a side of the described step of described column direction extension, and
When an end of the container of the described container that abuts greater than the step at its outer fringe surface and described two stepped parts is raise by described step components, increase to the mean distance of described first plate electrode.
9. as claim 5 or the 6 described devices that are used to judge the liquid in container type, wherein said container has cylindrical, prismatic or spherical shape, and be supported on the described receptacle support means, wherein said cylindrical or prismatic column direction is configured to vertical with described first plate electrode, and
Described receptacle support means has the structure that is centered on by stepped parts, described parts raise along the direction vertical with described first plate electrode, wherein, when the step of the basal surface of described prismatic or hydrostatic column and described stepped parts abuts and when the ridge part of the outer fringe surface of described spherical container and described step abuts, the distance between described container and described first plate electrode being adjusted according to the size of described container.
10. as claim 5 or the 6 described devices that are used to judge the liquid in container type, wherein said container has cylindrical or prismatic profile, and be supported on the described receptacle support means, wherein said cylindrical or prismatic column direction is configured to parallel with described first plate electrode, and
Described receptacle support means has groove, it has perpendicular to the opening on the direction of described first plate electrode and have the V-arrangement cross section, wherein, when the surface of the outer fringe surface of described cylindrical or prismatic container and described V-shaped groove abutted, the distance between described container and described first plate electrode being adjusted according to the size of described container.
11. as claim 5 or the 6 described devices that are used to judge the liquid in container type,
Wherein said container has cylindrical, prismatic or spherical shape, and is supported on the described receptacle support means, and wherein said cylindrical or prismatic column direction is configured to vertical with described first plate electrode, and
Described receptacle support means has perpendicular to the tapered opening on the direction of described first plate electrode, wherein, when the wall surface of the outer fringe surface of the ridge part of the basal surface of described prismatic or hydrostatic column or described spherical container and described tapered opening abutted, the distance between described container and described first plate electrode being adjusted according to the size of described container.
12. as each described device that is used to judge the liquid in container type in the claim 1 to 4, from the overlapping area perpendicular to the normal direction projection of first plate electrode described two plate electrodes, described first plate electrode is placed on a side of described container to wherein said receptacle support means according to the described container of the adjusted size of described container and described plate electrode.
13. a device that is used to judge the liquid in container type comprises:
Plate condenser, it comprises two plate electrodes relative to each other being placed; And
Receptacle support means, it keeps nonconducting container in the zone except the zone folded by described two plate electrodes, and described container can receiving fluids,
The type of the liquid in the wherein said container judges by electric capacity that detects described capacitor or the oscillation frequency that comprises the oscillatory circuit of described capacitor,
And wherein, from the overlapping area perpendicular to the normal direction projection of first plate electrode described two plate electrodes, described first plate electrode is placed on a side of described container to described receptacle support means according to the described container of the adjusted size of described container and described plate electrode.
14. as claim 12 or the 13 described devices that are used to judge the liquid in container type, wherein said container has cylindrical, prismatic or spherical shape, and be supported on the described receptacle support means, wherein said cylindrical or prismatic column direction is configured to parallel with described first plate electrode, and
Described receptacle support means has with respect to the acutangulate inclined surface of described first plate electrode, wherein, when the outer fringe surface of the ridge part of the basal surface of described prismatic or hydrostatic column or described spherical container and described inclined surface abutted, the described overlapping area of described container and described plate electrode was adjusted according to the size of described container.
15. as claim 12 or the 13 described devices that are used to judge the liquid in container type, wherein said container has cylindrical, prismatic or spherical shape, and be supported on the described receptacle support means, wherein said cylindrical or prismatic column direction is set to parallel with described first plate electrode, and
Described receptacle support means has stepped parts, it raises along the direction parallel with described first plate electrode, wherein, when the step of the basal surface of described prismatic or hydrostatic column and described stepped parts abuts and when the ridge part of the outer fringe surface of described spherical container and described step abuts, the described overlapping area of described container and described plate electrode is adjusted according to the size of described container.
16. as claim 5-8,10 and 12-15 in each described device that is used to judge the liquid in container type, wherein said receptacle support means is by with respect to the horizontal plane predetermined angle incline, and the relative position between described receptacle support means and described two plate electrodes is held.
17., also comprise as each described device that is used to judge the liquid in container type in the claim 1 to 14:
Sensor, it is used to detect described container and whether is placed on described receptacle support means;
Pick-up unit, its be used to detect the electric capacity of the described capacitor when described container is not placed on the described receptacle support means or described oscillatory circuit oscillation frequency, and the oscillation frequency of the electric capacity of the described capacitor when described container is placed on the described receptacle support means or described oscillatory circuit between variable quantity; And
Notifying device, whether it is used to notify described variable quantity greater than predetermined threshold.
18. a device that is used to judge the liquid in container type comprises:
Plate condenser, it comprises two plate electrodes relative to each other being placed;
Receptacle support means, it keeps nonconducting container in the zone except the zone folded by described two plate electrodes, and described container can receiving fluids;
Sensor, it is used to detect described container and whether is placed on described receptacle support means;
Pick-up unit, its be used to detect the electric capacity of the described capacitor when described container is not placed on the described receptacle support means or described oscillatory circuit oscillation frequency, and the oscillation frequency of the electric capacity of the described capacitor when described container is placed on the described receptacle support means or described oscillatory circuit between variable quantity; And
Notifying device, whether it is used to notify described variable quantity greater than predetermined threshold,
The type of the liquid in the wherein said container is judged by electric capacity that detects described capacitor or the oscillation frequency that comprises the oscillatory circuit of described capacitor.
19., also comprise as claim 17 or the 18 described devices that are used to judge the liquid in container type:
Memory storage, it is used to write down the electric capacity of the described capacitor when described container is not placed on the described receptacle support means or the oscillation frequency of described oscillatory circuit; And
Updating device, it is used for being updated periodically described electric capacity or the oscillation frequency that is recorded in described memory storage.
20. a method that is used to control the device that is used to judge the liquid in container type, described device comprises:
Plate condenser, it comprises two plate electrodes relative to each other being placed;
Receptacle support means, it keeps nonconducting container in the zone except the zone folded by described two plate electrodes, and described container can receiving fluids;
Pick-up unit, the oscillation frequency that it is used to detect the electric capacity of described capacitor or comprises the oscillatory circuit of described capacitor; And
Sensor, it is used to detect described container and whether is placed on described receptacle support means, and described method comprises:
First detects step, is used to detect described container and is not placed on described receptacle support means;
First measuring process wherein, when having carried out the detection of the described first detection step, is measured the electric capacity of described capacitor or the oscillation frequency of described oscillatory circuit;
Second detects step, is used to detect described container and is placed on described receptacle support means;
Second measuring process wherein, when having carried out the detection of the described second detection step, is measured the electric capacity of described capacitor or the oscillation frequency of described oscillatory circuit; And
Whether notifying process is used for notifying difference in electric capacity that described first measuring process is measured or oscillation frequency and electric capacity of measuring in described second measuring process or oscillation frequency greater than predetermined threshold.
21. a method that is used to control the device that is used to judge the liquid in container type, described device comprises:
Plate condenser, it comprises two plate electrodes relative to each other being placed;
Receptacle support means, it keeps nonconducting container in the zone except the zone folded by described two plate electrodes, and described container can receiving fluids;
Third electrode except that described two plate electrodes that described capacitor comprises, it is the electrode that is positioned at described external container, and by the part setting along described container, the described liquid in the described container is because gravity is maintained at described part place;
Pick-up unit, the oscillation frequency that it is used to detect the electric capacity of described capacitor or comprises the oscillatory circuit of described capacitor; And
Sensor, it is used to detect described container and whether is placed on described receptacle support means;
Wherein, described device has or first setting, and the voltage of wherein said third electrode is different with the absolute value and/or the phase place of the voltage of first plate electrode of described capacitor, and described first plate electrode is placed on a side of described container; Perhaps second be provided with, the voltage of wherein said third electrode is identical with the voltage of second plate electrode of described capacitor, and described second plate electrode is relative with described first plate electrode, and described method comprises:
First detects step, is used to detect described container and is not placed on described receptacle support means;
First measuring process wherein, when having carried out the detection of the described first detection step, is measured the electric capacity of described capacitor or the oscillation frequency of described oscillatory circuit;
Second detects step, is used to detect described container and is placed on described receptacle support means;
Second measuring process wherein, when having carried out the detection of the described second detection step, is measured the electric capacity of described capacitor or the oscillation frequency of described oscillatory circuit; And
Whether notifying process is used for notifying difference in electric capacity that described first measuring process is measured or oscillation frequency and electric capacity of measuring in described second measuring process or oscillation frequency greater than predetermined threshold.
22., also comprise as claim 20 or the 21 described methods that are used to control the device that is used to judge the liquid in container type:
The 3rd measuring process, it through after the schedule time, measures the electric capacity of described capacitor or the oscillation frequency of described oscillatory circuit after described first measuring process; And
Following step, wherein, if the absolute value of electric capacity of measuring in described first measuring process or oscillation frequency and electric capacity of measuring in described the 3rd measuring process or the difference between the oscillation frequency is bigger than predetermined value, then repeat described first measuring process and described the 3rd measuring process, perhaps, if the absolute value of described difference is not more than described predetermined value, then after waiting for, repeat step from described first measuring process to the detection process schedule time that is placed on the described container on the described receptacle support means.

Claims (20)

1. device that is used to judge the liquid in container type comprises:
Plate condenser, it has two plate electrodes placing with relative mode; And
Receptacle support means, it keeps nonconducting container in the zone except the zone folded by described two plate electrodes, described container its can receiving fluids,
And the type of the liquid in the described container is judged by electric capacity that detects described capacitor or the oscillation frequency that comprises the oscillatory circuit of described capacitor.
2. device that is used to judge the liquid in container type comprises:
Plate condenser, it has two plate electrodes placing with relative mode;
Receptacle support means, it keeps nonconducting container in the zone except that the zone folded by described two plate electrodes, can receiving fluids in the described container; And
Third electrode except that described two plate electrodes, it is the electrode that is positioned at described external container, and by the part setting along described container, the liquid in the described container is maintained on the described part owing to gravity,
And the type of the liquid in the described container is judged by electric capacity that detects described capacitor or the oscillation frequency that comprises the oscillatory circuit of described capacitor.
3. the device that is used to judge the liquid in container type as claimed in claim 2, wherein said third electrode is plate electrode or line electrode, it is placed along such surface, described surface be perpendicular to described plate condenser plane surface and with the outer side contacts of described container.
4. the device that is used to judge the liquid in container type as claimed in claim 3, wherein said third electrode moves to the outside surface of described container when detecting the described container that is placed on the described receptacle support means or with the described container interlock that is placed on the described receptacle support means time.
5. as each described device that is used to judge the liquid in container type in the claim 2 to 4, it has
Perhaps first be provided with, the voltage of wherein said third electrode and the absolute value of the voltage of first plate electrode of described capacitor and in the phase place one or two are different, and described first plate electrode is placed on a side of described container,
Perhaps second be provided with, the voltage of wherein said third electrode is identical with the voltage of second plate electrode of described capacitor, and described second plate electrode is relative with described first plate electrode.
6. as each described device that is used to judge the liquid in container type in the claim 1 to 5, wherein said receptacle support means is according to the distance of adjusted size from first plate electrode to described container of described container, in described two plate electrodes, described first plate electrode is placed on a side of described container.
7. the device that is used to judge the liquid in container type as claimed in claim 6, wherein said container has cylindrical or rectangle cylindricality profile and being supported on the described receptacle support means, wherein said column direction cylindrical or the rectangle cylindricality is set to parallel with described first plate electrode, and
Described receptacle support means has two stepped parts, its edge direction vertical with described first plate electrode raises and is placed as toward each other, and the step of described two stepped parts of the outer fringe surface of the distance between described container and described first plate electrode by contacting described cylindrical or rectangle cylindrical container or the marginal portion of step are adjusted according to the size of described container.
8. the device that is used to judge the liquid in container type as claimed in claim 7, wherein step components is placed on along a side of the described step of described column direction extension, and
Container, it is than big with the described container that the step of described two stepped parts contacts at its outer fringe surface, and has been increased the mean distance of described first plate electrode by by described step components the one end being raise.
9. the device that is used to judge the liquid in container type as claimed in claim 6, that wherein said container has is cylindrical, rectangle cylindricality or spherical shape, and be supported on the described receptacle support means, wherein said column direction cylindrical or the rectangle cylindricality is configured to vertical with described first plate electrode, and
Described receptacle support means has the structure that is centered on by stepped parts, described parts raise along the direction vertical with described first plate electrode, and the step of the described stepped parts of the basal surface of the distance between described container and described first plate electrode by contacting described rectangle cylindricality or hydrostatic column or the marginal portion of described step that contacts the outer fringe surface of described spherical container are adjusted according to the size of described container.
10. the device that is used to judge the liquid in container type as claimed in claim 6, wherein said container has cylindrical or rectangle cylindricality profile, and be supported on the described receptacle support means, wherein said column direction cylindrical or the rectangle cylindricality is configured to parallel with described first plate electrode, and
Described receptacle support means has groove, it has perpendicular to the opening on the direction of described first plate electrode and have the V-arrangement cross section, and the surface of the described V-shaped groove of the outer fringe surface of the distance between described container and described first plate electrode by contacting described cylindrical or rectangle cylindrical container is adjusted according to the size of described container.
11. the device that is used to judge the liquid in container type as claimed in claim 6, that wherein said container has is cylindrical, rectangle cylindricality or spherical shape, and be supported on the described receptacle support means, wherein said column direction cylindrical or the rectangle cylindricality is configured to vertical with described first plate electrode, and
Described receptacle support means has perpendicular to the tapered opening on the direction of described first plate electrode, and the wall surface of the described tapered opening of the marginal portion of the basal surface of the distance between described container and described first plate electrode by contacting described rectangle cylindricality or hydrostatic column or the outer fringe surface of described spherical container is adjusted according to the size of described container.
12. as each described device that is used to judge the liquid in container type in the claim 1 to 5, wherein said container and described plate electrode are being adjusted according to the size of described container from the overlapping area perpendicular to the normal direction projection of first plate electrode, in described two plate electrodes, described first plate electrode is placed on a side of described container.
13. the device that is used to judge the liquid in container type as claimed in claim 12, that wherein said container has is cylindrical, rectangle cylindricality or spherical shape, and be supported on the described receptacle support means, wherein said column direction cylindrical or the rectangle cylindricality is configured to parallel with described first plate electrode, and
Described receptacle support means has with respect to the acutangulate inclined surface of described first plate electrode, and, the described overlapping area of described container and described plate electrode by contacting described rectangle cylindricality or hydrostatic column the bottom margin part or the described inclined surface of the outer fringe surface of described spherical container adjust according to the size of described container.
14. the device that is used to judge the liquid in container type as claimed in claim 12, that wherein said container has is cylindrical, rectangle cylindricality or spherical shape, and be supported on the described receptacle support means, wherein said column direction cylindrical or the rectangle cylindricality is set to parallel with described first plate electrode, and
Described receptacle support means has stepped parts, it raises along the direction parallel with described first plate electrode, and the step of the described stepped parts of the basal surface of the described overlapping area of described container and described plate electrode by contacting described rectangle cylindricality or hydrostatic column or the marginal portion of described step that contacts the outer fringe surface of described spherical container are adjusted according to the size of described container.
15. as claim 6,7,8,10,12, the 13 or 14 described devices that are used to judge the liquid in container type, wherein said receptacle support means is by with respect to the horizontal plane predetermined angle incline, and the relative position between wherein said receptacle support means and described two plate electrodes is held.
16., also comprise as each described device that is used to judge the liquid in container type in the claim 1 to 15:
Sensor, it is used to detect described container and whether is placed on described receptacle support means;
Pick-up unit, its be used to detect the electric capacity of the described capacitor when described container is not placed on the described receptacle support means or described oscillatory circuit oscillation frequency, and the oscillation frequency of the electric capacity of the described capacitor when described container is placed on the described receptacle support means or described oscillatory circuit between variable quantity; And
Notifying device, whether it is used to notify described variable quantity greater than predetermined threshold.
17. the device that is used to judge the liquid in container type as claimed in claim 16 also comprises:
Memory storage, it is used to write down the electric capacity of the described capacitor when described container is not placed on the described receptacle support means or the oscillation frequency of described oscillatory circuit; And
Updating device, it is used for being updated periodically described electric capacity or the oscillation frequency that is recorded in described memory storage.
18. a method that is used to control the device that is used to judge the liquid in container type, described device comprises: plate condenser, and it has two plate electrodes placing with relative mode; Receptacle support means, it keeps nonconducting container in the zone except the zone folded by described two plate electrodes, and described container can receiving fluids; Pick-up unit, the oscillation frequency that it is used to detect the electric capacity of described capacitor or comprises the oscillatory circuit of described capacitor; And sensor, it is used to detect described container and whether is placed on described receptacle support means, and described method comprises:
First detects step, is used to detect described container and is not placed on described receptacle support means;
First measuring process wherein, when having carried out the detection of the described first detection step, is measured the electric capacity of described capacitor or the oscillation frequency of described oscillatory circuit;
Second detects step, is used to detect described container and is placed on described receptacle support means;
Second measuring process wherein, when having carried out the detection of the described second detection step, is measured the electric capacity of described capacitor or the oscillation frequency of described oscillatory circuit; And
Whether notifying process is used for notifying difference in electric capacity that described first measuring process is measured or oscillation frequency and electric capacity of measuring in described second measuring process or oscillation frequency greater than predetermined threshold.
19. a method that is used to control the device that is used to judge the liquid in container type, described device comprises: plate condenser, and it has two plate electrodes placing with relative mode; Receptacle support means, it keeps nonconducting container in the zone except the zone folded by described two plate electrodes, and described container can receiving fluids; Third electrode except that described two plate electrodes, it is the electrode that is positioned at described external container, and by the part setting along described container, the described liquid in the described container is because gravity is maintained at described part place; Pick-up unit, the oscillation frequency that it is used to detect the electric capacity of described capacitor or comprises the oscillatory circuit of described capacitor; And sensor, it is used to detect described container and whether is placed on described receptacle support means; And, having or first be provided with, the voltage of wherein said third electrode and the absolute value of the voltage of first plate electrode of described capacitor and in the phase place one or two are different, and described first plate electrode is placed on a side of described container; Perhaps second be provided with, the voltage of wherein said third electrode is identical with the voltage of second plate electrode of described capacitor, and described second plate electrode is relative with described first plate electrode, and described method comprises:
First detects step, is used to detect described container and is not placed on described receptacle support means;
First measuring process wherein, when having carried out the detection of the described first detection step, is measured the electric capacity of described capacitor or the oscillation frequency of described oscillatory circuit;
Second detects step, is used to detect described container and is placed on described receptacle support means;
Second measuring process wherein, when having carried out the detection of the described second detection step, is measured the electric capacity of described capacitor or the oscillation frequency of described oscillatory circuit; And
Whether notifying process is used for notifying difference in electric capacity that described first measuring process is measured or oscillation frequency and electric capacity of measuring in described second measuring process or oscillation frequency greater than predetermined threshold.
20., also comprise as claim 18 or the 19 described methods that are used to control the device that is used to judge the liquid in container type:
The 3rd measuring process, it through after the schedule time, measures the electric capacity of described capacitor or the oscillation frequency of described oscillatory circuit after described first measuring process; And
Following step, wherein, if the absolute value of electric capacity of measuring in described first measuring process or oscillation frequency and electric capacity of measuring in described the 3rd measuring process or the difference between the oscillation frequency is bigger than predetermined value, then repeat described first measuring process and described the 3rd measuring process, and, if the absolute value of described difference is not more than described predetermined value, then wait for being placed on the detection of the described container on the described receptacle support means, and through repeating the step from aforementioned first measuring process after the schedule time.
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CN110108756A (en) * 2019-04-25 2019-08-09 北京中泰通达科技发展有限公司 A kind of detection device and detection method of dangerous liquid
CN110250919A (en) * 2019-07-23 2019-09-20 珠海格力电器股份有限公司 Control method, device and the cooking apparatus of cooking apparatus
CN111134533A (en) * 2018-11-06 2020-05-12 佛山市顺德区美的电热电器制造有限公司 Heating control method, heating control device, medium and liquid heating container
CN111824626A (en) * 2020-07-17 2020-10-27 中节能（合肥）可再生能源有限公司 Liquid container recovery sorting machine

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JP4083888B2 (en) * 1998-08-25 2008-04-30 ジェイ・エス・ケー株式会社 Moisture detector
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JP2001272368A (en) * 2000-03-28 2001-10-05 Mitsubishi Materials Corp Method and device for determining liquid sort
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CN104812424A (en) * 2012-10-05 2015-07-29 塞伯斯多夫劳动有限责任公司 Dispensing device for medications
CN111134533A (en) * 2018-11-06 2020-05-12 佛山市顺德区美的电热电器制造有限公司 Heating control method, heating control device, medium and liquid heating container
CN110108756A (en) * 2019-04-25 2019-08-09 北京中泰通达科技发展有限公司 A kind of detection device and detection method of dangerous liquid
CN110250919A (en) * 2019-07-23 2019-09-20 珠海格力电器股份有限公司 Control method, device and the cooking apparatus of cooking apparatus
CN111824626A (en) * 2020-07-17 2020-10-27 中节能（合肥）可再生能源有限公司 Liquid container recovery sorting machine
CN111824626B (en) * 2020-07-17 2023-06-30 中节能（合肥）可再生能源有限公司 Liquid container recycling sorter

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