CN104819149A - Liquid transport method and liquid transport apparatus - Google Patents
Liquid transport method and liquid transport apparatus Download PDFInfo
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- CN104819149A CN104819149A CN201510015456.XA CN201510015456A CN104819149A CN 104819149 A CN104819149 A CN 104819149A CN 201510015456 A CN201510015456 A CN 201510015456A CN 104819149 A CN104819149 A CN 104819149A
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- cam
- swing
- angle
- liquid
- described cam
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- 239000007788 liquid Substances 0.000 title claims abstract description 115
- 238000000034 method Methods 0.000 title claims abstract description 41
- 230000033228 biological regulation Effects 0.000 claims description 32
- 230000002411 adverse Effects 0.000 claims description 10
- 238000001514 detection method Methods 0.000 claims description 10
- 238000003825 pressing Methods 0.000 claims description 5
- 238000010992 reflux Methods 0.000 claims description 4
- 230000003595 spectral effect Effects 0.000 claims 1
- 238000005259 measurement Methods 0.000 description 39
- 230000007246 mechanism Effects 0.000 description 15
- 238000005086 pumping Methods 0.000 description 11
- 230000008569 process Effects 0.000 description 8
- 238000009825 accumulation Methods 0.000 description 7
- 230000005526 G1 to G0 transition Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000004020 luminiscence type Methods 0.000 description 4
- 238000011144 upstream manufacturing Methods 0.000 description 4
- 238000003708 edge detection Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- 241000490025 Schefflera digitata Species 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- NOESYZHRGYRDHS-UHFFFAOYSA-N insulin Chemical compound N1C(=O)C(NC(=O)C(CCC(N)=O)NC(=O)C(CCC(O)=O)NC(=O)C(C(C)C)NC(=O)C(NC(=O)CN)C(C)CC)CSSCC(C(NC(CO)C(=O)NC(CC(C)C)C(=O)NC(CC=2C=CC(O)=CC=2)C(=O)NC(CCC(N)=O)C(=O)NC(CC(C)C)C(=O)NC(CCC(O)=O)C(=O)NC(CC(N)=O)C(=O)NC(CC=2C=CC(O)=CC=2)C(=O)NC(CSSCC(NC(=O)C(C(C)C)NC(=O)C(CC(C)C)NC(=O)C(CC=2C=CC(O)=CC=2)NC(=O)C(CC(C)C)NC(=O)C(C)NC(=O)C(CCC(O)=O)NC(=O)C(C(C)C)NC(=O)C(CC(C)C)NC(=O)C(CC=2NC=NC=2)NC(=O)C(CO)NC(=O)CNC2=O)C(=O)NCC(=O)NC(CCC(O)=O)C(=O)NC(CCCNC(N)=N)C(=O)NCC(=O)NC(CC=3C=CC=CC=3)C(=O)NC(CC=3C=CC=CC=3)C(=O)NC(CC=3C=CC(O)=CC=3)C(=O)NC(C(C)O)C(=O)N3C(CCC3)C(=O)NC(CCCCN)C(=O)NC(C)C(O)=O)C(=O)NC(CC(N)=O)C(O)=O)=O)NC(=O)C(C(C)CC)NC(=O)C(CO)NC(=O)C(C(C)O)NC(=O)C1CSSCC2NC(=O)C(CC(C)C)NC(=O)C(NC(=O)C(CCC(N)=O)NC(=O)C(CC(N)=O)NC(=O)C(NC(=O)C(N)CC=1C=CC=CC=1)C(C)C)CC1=CN=CN1 NOESYZHRGYRDHS-UHFFFAOYSA-N 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 208000034657 Convalescence Diseases 0.000 description 1
- 102000004877 Insulin Human genes 0.000 description 1
- 108090001061 Insulin Proteins 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000010191 image analysis Methods 0.000 description 1
- 229940125396 insulin Drugs 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
- F04B9/02—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical
- F04B9/04—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical the means being cams, eccentrics or pin-and-slot mechanisms
- F04B9/042—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical the means being cams, eccentrics or pin-and-slot mechanisms the means being cams
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B43/00—Machines, pumps, or pumping installations having flexible working members
- F04B43/12—Machines, pumps, or pumping installations having flexible working members having peristaltic action
- F04B43/14—Machines, pumps, or pumping installations having flexible working members having peristaltic action having plate-like flexible members
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
- F04B17/003—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by piezoelectric means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B19/00—Machines or pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B1/00 - F04B17/00
- F04B19/006—Micropumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B43/00—Machines, pumps, or pumping installations having flexible working members
- F04B43/02—Machines, pumps, or pumping installations having flexible working members having plate-like flexible members, e.g. diaphragms
- F04B43/04—Pumps having electric drive
- F04B43/043—Micropumps
- F04B43/046—Micropumps with piezoelectric drive
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B43/00—Machines, pumps, or pumping installations having flexible working members
- F04B43/12—Machines, pumps, or pumping installations having flexible working members having peristaltic action
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/20—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by changing the driving speed
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Reciprocating Pumps (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
- Media Introduction/Drainage Providing Device (AREA)
Abstract
The invention provides a liquid transport method and a liquid transport apparatus. The liquid transport method includes rotating a cam from a reference position of rotation of the cam rotating for transporting liquid; determining whether or not the cam rotates to a predetermined rotational angle on the basis of an image of a liquid transport apparatus captured when the cam is rotated and stopped; and memorizing a signal value indicating a rotational angle of the cam from the reference position of rotation until the cam rotates to the predetermined rotational angle. With this method, the relationship between a signal original point and a pump original point is obtained easily.
Description
Technical field
The present invention relates to method for liquid transfer and liquid transporting apparatus.
Background technique
As the liquid transporting apparatus of conveying liquid, there will be a known the micropump described in patent documentation 1.On micropump, be configured with multiple finger shape plate (finger) along pipe, press finger shape plate successively by cam, extruded tube and carry liquid.Further, the encoder of the angle of swing for measuring cam is provided with.
In the Liquid transfer employing cam and finger shape plate, liquor charging characteristic has periodically.Although also have periodically on the signal exported from encoder, the reference point (hereinafter referred to as " signal initial point ") in output signal is on which position in the cycle, different according to device.Therefore, in order to control Liquid transfer, need the relation of the angle of swing (hereinafter referred to as " pump initial point ") becoming benchmark obtaining signal initial point and cam in advance.
This point also can be made Liquid transfer by actual and detected quantity delivered, thus obtains the relation of signal initial point and pump initial point.But, due to quantity delivered be trace, thus in the detection of quantity delivered with regard to precision prescribed, therefore the method is not suitable for volume production.
The object of the invention is the relation obtaining signal initial point and pump initial point easily.
Prior art document
Patent documentation
Patent documentation 1: Japanese Unexamined Patent Publication 2013-24185 publication
Summary of the invention
Main inventive for achieving the above object is a kind of method for liquid transfer of liquid transporting apparatus, the cam that this method for liquid transfer is used in conveying liquid and rotates rotates from the rotation reference position of described cam, according to make described cam have rotated after stop and the image of described liquid transporting apparatus after being caught on camera, judge whether described cam has rotated the angle of swing to regulation, and store the described cam of expression rotates to the signal of the angle of swing of the described cam till the angle of swing of described regulation value from rotation reference position.
For further feature of the present invention, illustrated by the description of this specification and accompanying drawing.
Accompanying drawing explanation
Fig. 1 is the overall perspective view of the liquid transporting apparatus 1 in the first mode of execution.
Fig. 2 is the exploded view of the liquid transporting apparatus 1 in the first mode of execution.
Fig. 3 is the sectional view of the liquid transporting apparatus 1 in the first mode of execution.
Fig. 4 is the perspective top observation figure of the inside of liquid transporting apparatus 1 in the first mode of execution.
Fig. 5 is the brief description figure of the pumping section 5 in the first mode of execution.
Fig. 6 is the block diagram of measurement section 40 for illustration of liquid transporting apparatus 1 and control device 50.
Fig. 7 is the explanatory drawing in the cam lateral reflection portion 111 be formed on cam wheel.
Fig. 8 is the explanatory drawing being formed at the first reflective portions 124 on rotor 122 and the second reflective portions 125.
Fig. 9 is the plotted curve representing the rotating amount of cam 11 and the relation of accumulation quantity delivered.
Figure 10 A and Figure 10 B is the explanatory drawing of the adverse current about liquid.
Figure 11 is the partial enlarged drawing of cam 11 in Fig. 4, rotor 122, transfer wheel 123A, cam side measurement section 41 and the first measurement section 42 and the second measurement section 43.
Figure 12 is the explanatory drawing of the relation of display CAM_Z, ROT_Z and ROT_A.
Figure 13 is the explanatory drawing of the relation of display CAM_Z and ROT_A.
Figure 14 is the flow chart that the step of signal initial point is determined in display.
Figure 15 is the schematic diagram determined for illustration of pump initial point.
Figure 16 is the flow chart of the step that display pump initial point is determined.
Figure 17 is the concise and to the point figure of an example of pumping section 5 in display second mode of execution.
Figure 18 is the concise and to the point figure of an example of pumping section 5 in display the 3rd mode of execution.
Symbol description
1 liquid transporting apparatus; 5 pumping section; 10 main bodys; 11 cams; 12 driving mechanisms; 19 batteries; 111 cam lateral reflection portions; 121 piezoelectric actuators; 122 rotors; 123 deceleration transfer mechanisms; 123A transfer wheel; 124 first reflective portionss; 125 second reflective portionss; 20 boxes; 21 pipes; 22 finger shape plate; 25 pipe guiding walls; 30 pasters; 40 measurement section; 41 cam side measurement section; 42 first measurement section, 43 second measurement section; 50 control devices; 51 counters; 52 memory sections; 53 operational parts; 54 drivers; M1, M2 position probing marks.
Embodiment
By the description of this specification and accompanying drawing, at least following item becomes clear.
A kind of method for liquid transfer, described method for liquid transfer is the method for liquid transfer of liquid transporting apparatus, be used in conveying liquid and the cam that rotates rotates from the rotation reference position of described cam, according to make described cam have rotated after stop and the image of described liquid transporting apparatus after being caught on camera, judge whether described cam has rotated the angle of swing to regulation, and store and represent the value of described cam from the signal of the angle of swing of the described cam of rotation reference position till the angle of swing rotating to described regulation.
Described method for liquid transfer is also the use of pipe, cam, is configured at the finger shape plate between described pipe and described cam, the drive portion that described cam is rotated, the encoder of angle of swing exporting described cam and the method for liquid transfer to the image pickup part that described cam is made a video recording, and described method for liquid transfer performs: the reference point obtaining the signal that described encoder exports; From the reference point of described signal, described cam is rotated; According to make described cam have rotated after stop and image after being made a video recording by described image pickup part, judge whether described cam has become the angle of swing of regulation; And store the count value of the output signal becoming the described encoder till the described angle of swing of regulation from the reference point of described signal until described cam.
According to this method for liquid transfer, the relation of signal initial point and pump initial point can be obtained easily.
Also the angle of swing of described cam can be detected by detecting the position probing mark being arranged at described cam from described image.By the mark of setting position detection on cam, thus easily can detect the angle of swing of cam from captured image, therefore, it is possible to obtain the relation of signal initial point and pump initial point easily.
Also the described angle of swing of described cam can be detected by the edge detecting described position probing mark.Because position probing mark is set up corresponding with the angle of swing of cam, thus by the edge detection of this mark, cam can be obtained easily and whether arrived angle of swing corresponding to pump initial point.
Also can by detecting from described image the angle of swing that described cam is detected in the position pressing the pressing component of the parts of the stream forming described liquid along with the rotation of described cam.
In addition, the described angle of swing of described cam also can be detected by the position detecting described finger shape plate from described image.Because the position of finger shape plate is set up corresponding with the angle of swing of cam, the angle of swing of cam thus can be detected by the position of detection finger shape plate, therefore, it is possible to obtain the relation of signal initial point and pump initial point easily.
Also the described liquid after adverse current can be returned reflux fraction such many time the angle of swing of described cam as the benchmark of the angle of described regulation.Thus, then the control of the quantitative conveying of liquid just becomes simple.
A kind of liquid transporting apparatus, is characterized in that possessing: cam, rotating for carrying liquid; And control device, wherein, described control device read store, represent that described cam rotates to the value of the signal of the angle of swing of the described cam till the angle of swing of regulation from rotation reference position, judging that whether described cam has rotated the angle of swing to described regulation from described reference position, as benchmark, described cam being rotated being judged as the position that described cam rotated to the angle of swing of described regulation to desired angle of swing.
According to this liquid transporting apparatus, the relation of signal initial point and pump initial point can be obtained easily.
A kind of rotate position detection device, measure the rotational position of the described cam in liquid transporting apparatus, wherein said liquid transporting apparatus possesses the encoder of the cam rotated for carrying liquid and the angle of swing exporting described cam, it is characterized in that, possess: cam rotary part, described cam is rotated from the rotation reference position of described cam; Detection unit, according to make described cam have rotated after stop and the image of described liquid transporting apparatus after being caught on camera, judge whether described cam has rotated the angle of swing to regulation; And configuration part, the count value of the described encoder that described cam is rotated to till the angle of swing of described regulation from rotation reference position is stored in described liquid transporting apparatus.
In addition, described rotate position detection device has liquid transporting apparatus and image pickup part and measures the rotational position of described cam, this liquid transporting apparatus possesses: pipe, cam, be configured at the finger shape plate between described pipe and described cam, the drive portion that described cam is rotated, the encoder of angle of swing that exports described cam, this image pickup part is made a video recording to described liquid transporting apparatus, possess: reference point search section, obtain the reference point of the signal that described encoder exports; Cam rotary part, makes described cam rotate from the reference point of the signal of described encoder; Detection unit, according to make described cam have rotated after stop and image after being made a video recording by described image pickup part, judge whether described cam has become the angle of swing of regulation; And memory section, store the count value becoming the described encoder the described angle of swing of regulation from the reference point of described signal to described cam.
According to this rotate position detection device, the relation of signal initial point and pump initial point can be obtained easily.
First mode of execution
(liquid transporting apparatus)
About overall structure
Fig. 1 is the overall perspective view of liquid transporting apparatus 1.Fig. 2 is the exploded view of liquid transporting apparatus 1.As shown in the figure, sometimes using liquid transporting apparatus 1 by the side (biological side) that attaches as D score, using opposite side as " on " and to be described.
Liquid transporting apparatus 1 is the device for carrying liquid.Liquid transporting apparatus 1 possesses: main body 10, box 20 and paster 30.Main body 10, box (cartridge) although 20 and paster 30 separable as shown in Figure 2, be assembled into one as shown in Figure 1 in use.Liquid transporting apparatus 1 is preferred for paster 30 being attached at such as organism and being regularly infused in the liquid (such as insulin) stored in box 20.The liquid stored in box 20 is used up, although box 20 is replaced, main body 10 and paster 30 can continue to use.
About pumping section
Fig. 3 is the sectional view of liquid transporting apparatus 1.Fig. 4 is the perspective top observation figure of the inside of liquid transporting apparatus 1, also show the structure of pumping section 5.Fig. 5 is the brief description figure of pumping section 5.
Pumping section 5 has the function as the pump for carrying liquid stored in box 20, possesses pipe 21, multiple finger shape plate 22, cam 11 and driving mechanism 12.
Pipe 21 is the pipes for carrying liquid.The upstream side (with the throughput direction of liquid for upstream side during benchmark) of pipe 21 is communicated with the reservoir of the liquid of box 20.If just inaccessiblely to be removed from the power of finger shape plate 22 if pipe 21 has to be pressed by finger shape plate 22, the elasticity of the degree of restoring.Pipe 21, along the internal surface of the pipe guiding wall 25 of box 20, is configured to circular shape partly.The partial configuration of the circular shape of pipe 21 is between the internal surface and multiple finger shape plate 22 of pipe guiding wall 25.The center of the circular arc of pipe 21 is consistent with the rotating center of cam 11.
Finger shape plate 22 is the parts for making pipe 21 obturation.Finger shape plate 22 is stressed from cam 11, thus carries out action drivenly.Finger shape plate 22 has bar-shaped axle portion and flange shape press part, and then becomes T-shaped shape.Bar-shaped axle portion contacts with cam 11, and flange shape press part contacts with pipe 21.Finger shape plate 22 is supported to become axially movable mode.
Multiple finger shape plate 22 radially configures at equal intervals from the rotating center of cam 11.Multiple finger shape plate 22 is configured between cam 11 and pipe 21.At this, be provided with seven finger shape plate 22.In the following description, sometimes from the upstream side of the throughput direction of liquid be called successively the first finger shape plate 22A, the second finger shape plate 22B ... 7th finger shape plate 22G.
Cam 11 has jut 11A in four positions of periphery.Be configured with multiple finger shape plate 22 in the periphery of cam 11, be configured with pipe 21 in the outside of those finger shape plate 22.By pressing finger shape plate 22, clogged tube 21 by the jut 11A of cam 11.If finger shape plate 22 departs from from jut 11A, then pipe 21 just reverts to original state by the elastic force of pipe 21.If cam 11 rotates, then seven finger shape plate 22 are pressed by jut 11A successively, thus from the upstream side clogged tube 21 successively of throughput direction.Thus, pipe 21 will vermicular movement, and then liquid is extruded by pipe 21 and carries.
About driving mechanism
Driving mechanism 12 is the mechanisms for rotating drive cam 11, has piezoelectric actuator 121, rotor 122 and deceleration transfer mechanism 123 as shown in Figure 4.
Piezoelectric actuator 121 utilizes the vibration of piezoelectric element and the actuator for making rotor 122 rotate.Piezoelectric actuator 121 passes through the additional drive singal of the piezoelectric element on the two sides being bonded in rectangular-shaped oscillating body, thus oscillating body is vibrated.The end of oscillating body contacts with rotor 122, if oscillating body vibration, then this end vibrates with regard to the track describing the regulation such as elliptical orbit or 8 word tracks.The end of oscillating body by contacting with rotor 122 in a part for vibrating the track, thus rotary actuation rotor 122.Piezoelectric actuator 121 is partial to rotor 122 by a pair spring in the mode of the ends contact of oscillating body in rotor 122.
Rotor 122 makes it be forced to the driven member rotated by piezoelectric actuator 121.On the rotor 122, the rotor pinion of the part forming deceleration transfer mechanism 123 is formed.
Deceleration transfer mechanism 123 is the mechanisms rotation of rotor 122 being passed to cam 11 with the reduction speed ratio of regulation.Deceleration transfer mechanism 123 is made up of (with reference to Figure 11) rotor pinion, transfer wheel 123A, cam wheel.Rotor pinion is installed on the small gear on rotor 122 integratedly.Transfer wheel 123A has the gearwheel engaged with rotor pinion and the small gear engaged with cam wheel, and has the function rotating force of rotor 122 being passed to cam 11.Cam wheel is installed on cam 11 integratedly, is supported in the mode that together can rotate with cam 11.In addition, at this, reduction speed ratio of deceleration transfer mechanism 123 is set as 40.That is, if rotor 122 rotates a circle, then cam 11 will rotate 1/40 week.
In addition, form cam 11 in the pipe 21 of pumping section 5, multiple finger shape plate 22, cam 11 and driving mechanism 12 and driving mechanism 12 is arranged at main body 10, pipe 21 and multiple finger shape plate 22 are arranged at box 20.Also be provided with in main body 10: for measuring the measurement section 40 of the angle of swing of cam 11 grade and carrying out the control device 50 of control, the battery 19 to supply electric power such as piezoelectric actuators 121 of piezoelectric actuator 121 grade.
Fig. 6 is the block diagram of measurement section 40 for illustration of liquid transporting apparatus 1 and control device 50.While with reference to Figure 11, be described for measurement section 40 and control device 50.
Measurement section 40 has the cam side measurement section 41 of the angle of swing for measuring cam 11 and the first measurement section 42 and the second measurement section 43 for the first angle of swing of measuring rotor 122 respectively and the second angle of swing.
Cam side measurement section 41 is the rotary encoders having luminescence part 41A and light-receiving part 41B.Cam wheel is formed cam lateral reflection portion 111, and the reflection of cam lateral reflection portion 111 carrys out the light of self-luminescent part 41A, is received by light-receiving part 41B by the light after reflecting.Light-receiving part 41B exports the output signal CAM_Z corresponding to light income to control device 50.
First measurement section 42 and the second measurement section 43 are also the rotary encoders respectively with luminescence part 42A, 43A and light-receiving part 42B, 43B.On the rotor 122, the first reflective portions 124 and the second reflective portions 125 is formed.First reflective portions 124 reflects the light of the luminescence part 42A from the first measurement section 42, is received by the light-receiving part 42B of the first measurement section 42 by the light after reflecting.In addition, the second reflective portions 125 reflects the light of the luminescence part 43A from the second measurement section 43, is received by the light-receiving part 43B of the second measurement section 43 by the light after reflecting.Respective light-receiving part 42B, 43B in first measurement section 42 and the second measurement section 43 export the output signal ROT_A and ROT_Z that correspond to light income to control device 50.
Fig. 7 is the explanatory drawing in the cam lateral reflection portion 111 be formed on cam wheel.As shown in Figure 7, cam lateral reflection portion 111 is formed as one on cam wheel.In addition, cam lateral reflection portion 111 is different according to product relative to the position relationship of jut 11A.
Fig. 8 is the explanatory drawing being formed at the first reflective portions 124 on rotor 122 and the second reflective portions 125.As shown in Figure 8, the number of the first reflective portions 124 and the second reflective portions 125 is respectively 12 and 1.12 the first reflective portionss 124 are equidistant centered by the running shaft of rotor 122, radially formed at equal intervals.Therefore, the angle between the first reflective portions 124 is 30 degree.Further, the second reflective portions 125 is formed as one in the rotation shaft side than the first reflective portions 124 inside and rotor 122.
In addition, cam side measurement section 41 and the first measurement section 42 and the second measurement section 43 are not limited to the optical sensor of reflection type, also can be through the optical sensor of type.
Control device 50 has counter 51, memory section 52, operational part 53 and driver 54 as shown in Figure 6.Counter 51 counts the number at the edge contained in the output signal ROT_A of the first measurement section 42.The count value of counter 51 represents the angle of swing of rotor 122.Due to the angle of swing of rotor 122 and the angle of swing of cam 11 corresponding, thus the count value of counter 51 also represents the angle of swing of cam 11.In addition, in memory section 52, except store for operational part 53, driver 54 is driven program except, also store corresponding to the position on the signal ROT_A of pump initial point.Operational part 53 performs the program stored in memory section 52, drives driver 54 according to the count value (angle of swing of cam 11 or rotor 122) of counter 51 and the position that corresponds on the signal ROT_A of pump initial point.Drive singal, according to the instruction from operational part 54, is exported to the piezoelectric actuator 121 of driving mechanism 12 by driver 54.
In addition, as described later, control device 50 is equivalent to according to the signal ROT_Z exported afterwards in the output of signal CAM_Z and the judegment part of the benchmark of judgment signal ROT_A.In addition, control device 50 is also equivalent to the reference point search section of the signal criterion point obtaining signal ROT_A.
About the action of liquid transporting apparatus
Fig. 9 is the plotted curve representing the rotating amount of cam 11 and the relation of accumulation quantity delivered.This plotted curve is using as reference position that is 0 degree, a certain position of cam 11, determines quantity delivered figure relative to the accumulation of the rotating amount of cam 11 from reference position.
Here, during till cam 11 rotates to 60 degree from 0 degree (hereinafter referred to as " during conveying "), quantity delivered is roughly directly proportional to angle of rotation.During this conveying, carry liquid by making pipe 21 inaccessible successively from the first finger shape plate 22A always.During till cam 11 rotates to 80 degree from 60 degree (hereinafter referred to as " between stationary phase "), accumulation quantity delivered does not change always.Between this stationary phase, the 7th finger shape plate 22G continues to make pipe 21 inaccessible.During till cam 11 rotates to 85 degree from 80 degree (hereinafter referred to as " during adverse current "), accumulation quantity delivered is constantly in minimizing.That is, during adverse current, liquid is in adverse current.
Figure 10 A and Figure 10 B is the explanatory drawing of the adverse current of liquid.Although pipe 21 is configured to circular shape as described above, here for convenience of description for the purpose of, pipe 21 is shown as straight line shape.
From the pressed state making the state of the 7th finger shape plate 22G clogged tube 21 be transferred to by the rotation of cam 11 as shown in Figure 10 A to be produced by the 7th finger shape plate 22G as shown in Figure 10 B by the state decontroled.Now, the difference deducting the capacity after the capacity in the oblique line portion of Figure 10 A from the capacity in the oblique line portion of Figure 10 B has how many, liquid will adverse current how many.
Further, during till cam 11 rotates to 90 degree from 85 degree (hereinafter referred to as " recovery period "), conveying is equivalent to the liquid of the amount of reflux fraction.That is, here, reference position and 0 degree of position as the cam 11 after recovery period.
Just like this, when making cam 11 rotate, during the liquid had corresponding to the amount of rotating amount is transferred, liquid be not transferred during and during liquid countercurrent.As shown in Figure 9, the quantity delivered corresponding to the liquid of the rotating amount of cam 11 will be different with the difference of the angle of swing of cam 11 for this result.When such as make cam 11 rotate 45 degree and carry liquid, make it rotate to the quantity delivered (about 1.2 μ l) when 45 degree from 0 degree and rotate to the quantity delivered (about 0.3 μ l) when 90 degree different from making it from 45 degree.On the other hand, when carrying liquid when making cam 11 90-degree rotation, no matter which position cam 11 is, all can carry the liquid of almost equivalent (about 1.5 μ l).That is, the quantity delivered of liquid is non-linear relative to rotating to be of cam 11, but has the periodicity of 1/4 of cam 11 rotation as one-period.
(setting procedure of signal initial point)
From the viewpoint of the high-precision conveying of liquid, preferably, the accumulation quantity delivered of liquid is straight line shape relative to the time.For this reason, such as during adverse current and recovery period need regulate in the mode rotated quickly than cam between stationary phase 11.For this reason, need to make the angle of swing of the count value of counter 51 and cam 11 corresponding exactly with the quantity delivered of liquid.
Figure 11 is the enlarged view of cam 11 in Fig. 4, rotor 122, transfer wheel 123A, cam side measurement section 41 and the first measurement section 42 and the second measurement section 43.Figure 12 is the explanatory drawing of the relation of display CAM_Z, ROT_Z and ROT_A.Figure 13 is the explanatory drawing of the relation of display CAM_Z and ROT_A.In addition, time shaft amplifies than Figure 12 and shows by signal CAM_Z and ROT_A in Figure 13.
As mentioned above, the first measurement section 42 exports the signal ROT_A of the amount corresponding to the reflected light received by light-receiving part 42B.At this, owing to being circumferentially formed with 12 the first reflective portionss 124 as shown in figure 11 on the rotor 122, thus rotor 122 often rotates a circle, and the first measurement section 42 just exports the signal ROT_A containing 12 pulse type waveforms.
In addition, the second measurement section 43 exports the signal ROT_Z of the amount corresponding to the reflected light received by light-receiving part 43B.At this, owing to being formed with second reflective portions 125 on the rotor 122, thus rotor 122 often rotates a circle, and the second measurement section 43 just exports the signal ROT_Z containing a pulse type waveform.
Cam side measurement section 41 exports the signal CAM_Z of the amount corresponding to the reflected light received by light-receiving part 41B just as described above.Owing to being formed with a cam lateral reflection portion 111 on cam 11, thus cam 11 often rotates a circle, and cam side measurement section 41 just exports the signal CAM_Z containing a pulse type waveform.
Here, because rotor 122 during rotating a circle at cam 11 rotates 40 weeks, thus in the one-period of the output signal CAM_Z of cam side measurement section 41, corresponding to the first measurement section 42 of rotor 122 output signal ROT_A contained by the number of pulse be 40 × 12=480.If using the rising of the pulse in signal ROT_A with decline as 1count, then as shown in figure 12, cam 11 often rotates a circle, and will measure from the 960count till 0 to 959.
, make the cycle of signal ROT_A and signal CAM_Z set up corresponding relation exactly to measure the angle of swing of cam 11 exactly, for this reason, edge picture contained in signal CAM_Z is such as precipitous more satisfactory shown in Figure 12.But, in fact, as shown in figure 13, the edge rust of signal CAM_Z.This is because, the rotation of the speed ratio rotor 112 of cam 11 is slow, thus the change of signal CAM_Z slows down than signal ROT_A.Its result, the detected timing (timing) in the edge contained in signal CAM_Z is as in fig. 14 by shown in solid line and dotted line, and according to the difference in cycle, some departs from.Therefore, when wanting the signal initial point directly being determined signal ROT_A by signal CAM_Z, the reproducibility of the signal initial point of signal ROT_A is low.So, in the present embodiment, determined the signal initial point of signal ROT_A as follows by signal CAM_Z.
Figure 14 is the flow chart that the step of the signal initial point of signal ROT_A is determined in display.Also while with reference to Figure 12, be described the determination of the signal initial point in present embodiment.
First, in step s 11, the rising edge of the pulse type waveform of control device 50 testing signal CAM_Z.Then, in step s 12, as in fig. 12 by from signal CAM_Z towards shown in the arrow of ROT_Z, the edge of the signal ROT_Z occurred after the edge that control device 50 detects immediately signal CAM_Z is detected.As described above, signal ROT_Z is the signal rotated 1 of rotor 122 as the cycle, and the timing (timing) that thus edge of signal CAM_Z is detected is constant relative to signal ROT_Z.Therefore, by above-mentioned process, can the edge of testing signal ROT_Z with good reproducibility.Then, in step s 13, as in fig. 12 by from signal ROT_Z towards shown in the arrow of ROT_A, the edge of the signal ROT_A occurred after the edge that control device 50 detects immediately signal ROT_Z is detected, determines this edge as signal initial point.Just as described above, signal ROT_A and ROT_Z derives from the light quantity of the light in the first reflective portions 124 and the second reflective portions 125 after reflection, first reflective portions 124 and the second reflective portions 125 are all formed on the rotor 122, and signal ROT_A is corresponding exactly with the cycle of signal ROT_Z.Therefore, by above-mentioned process, the signal initial point of signal ROT_A can be determined with good reproducibility.
(pump initial point determines process)
Figure 15 is the schematic diagram determined for illustration of pump initial point.Figure 16 is the flow chart of the treatment step that display pump initial point is determined.Below, also with reference to Fig. 9, while determine that process is described to pump initial point.
After signal initial point is determined, perform the process determining pump initial point.This is because, signal initial point determines from the viewpoint of reproducibility, the pump initial point therefore determined with the viewpoint that should control from quantitative liquor charging is inconsistent.
About pump initial point
Here, the reference position of the cam 11 in the position returned by reflux fraction i.e. Fig. 9 is as pump initial point.This be due to, by so setting pump initial point, during conveying in one-period and tempus intercalare (comprising between stationary phase, during adverse current and between the convalescence) border in the quantity delivered of liquid be one just enough, the variable needed for control therefore such as can be made to tail off and to wait the control of quantitatively carrying to become simple.
Angle of swing corresponding to the cam 11 of pump initial point easily can be obtained by image procossing.Here, for convenience of description, as shown in figure 15, the solid line with arrow that the running shaft from cam 11 radially extends is defined as pump initial point.
Pump initial point determines the step processed
After the angle of swing making cam 11 aligning corresponding with signal initial point, start pump initial point and determine process.
First, in the step s 21, cam 11 rotations are made to be equivalent to the angle of a counting (count) of signal ROT_A.That is, to increase the mode of on signal ROT_A from the value Z of signal initial point counting, by the cam rotary part be such as arranged on production line, cam is rotated.Further, step S21 is often performed, and value Z will increase by one.
Then, in step S22, take the image of cam 11.The shooting of image uses the photographic camera (image pickup part) that is such as arranged on production line and carries out.
Then, in step S23, detect the angle of swing of cam 11 by resolving captured image.Specifically, in the first embodiment, by detecting the edge of the jut 11A of cam 11 from captured image and detecting the position of jut 11A.At this, the edge of jut 11A detecting cam 11 be because, jut 11A is separated from the running shaft of cam 11, therefore be equivalent to signal ROT_A an angle counted rotation compared with, the displacement of the jut 11A of cam 11 is large completely, even the thus minor variations of the angle of swing of cam 11, is also apparent in the change of jut 11A of cam 11.That is, the precision of edge detection can be made to improve.
Thereafter, in step s 24 which, judge whether the angle of swing of cam 11 has arrived pump initial point.When being judged to be that cam 11 has arrived pump initial point, just enter into next step S25; When being judged to be that cam 11 not yet arrives pump initial point, just return to step S21.In step s 25, make count value Z be stored in the memory section 52 of control device 50, and terminate a series of process.
In this way, the edge for being only delayed value Z from signal initial point is just determined corresponding to the position on the signal ROT_A of pump initial point.
After pump initial point determines process, control device 50 performs the conveying of liquid as follows.First, control device 50 drives piezoelectric actuator 121, rotor 122 and cam 11 is rotated, the edge of testing signal CAM_Z.Then, control device 50, according to the edge of the signal ROT_Z detected after immediately have detected the edge of signal CAM_Z, detects the edge (signal initial point) of the signal ROT_A immediately detected thereafter.The edge of control device 50 to the signal ROT_A after the detection from signal initial point counts, and makes rotor 122 and cam 11 rotate, till reaching the number of edges Z stored in memory section 52 again.Then, when the number of edges counted reaches Z, cam 11 just becomes the angle of swing corresponding to pump initial point.So, as shown in Figure 9, control device 50, making cam 11 with the rotation of certain angle of swing during pump initial point (being equivalent to the reference position of 0 degree of Fig. 9) to the conveyings of 60 degree, if reach 60 degree, makes it rotate to 90 degree in the mode skipping the intermittent phase.Thereby, it is possible to make the accumulation quantity delivered of liquid linearly increase relative to the time.That is, the high-precision conveying of liquid can be realized.
As described above, in the first embodiment, according to the edge of the signal ROT_Z detected after the edge that have detected signal CAM_Z at once, the edge of immediately detected thereafter signal ROT_A is defined as the signal initial point (reference point) of signal ROT_A.Then, make cam 11 rotate a counting from the signal initial point of signal ROT_A like that many, stop after rotation and cam 11 is taken pictures.The position of the jut 11A of the cam 11 obtained according to the image by resolving so shooting, judges that cam 11 reaches pump initial point.Thereafter, the count value Z that cam 11 arrives till pump initial point from the signal initial point of signal ROT_A is stored in memory section 52.Therefore, make cam 11 from the signal initial point of signal ROT_A have rotated count value Z large like that after position be confirmed as pump initial point, thus can obtain the relation of signal initial point and pump initial point easily.
Second mode of execution
Figure 17 is the concise and to the point figure of an example of pumping section 5 in display second mode of execution.
In this second embodiment, the detecting method that pump initial point determines the angle of swing of the cam 11 in the step S23 processed is changed.That is, as shown in figure 17, on each jut 11A of cam 11, indicate fine rule and cross such position probing mark M1.Then, by resolving the image of cam 11 captured in step S22 and the position of certification mark M1, the angle of swing of cam is detected according to testing result.At this, the jut 11A of cam 11 marks position probing mark M1 be because, this mark M1 is separated from the running shaft of cam 11, therefore be equivalent to signal ROT_A an angle counted rotation compared with, the displacement of mark M1 is large completely, therefore, it is possible to seek the high precision int of edge detection.
Just as described above, in this second embodiment, being marked with position probing mark M1 at the jut 11A of cam 11, judging that cam 11 reaches pump initial point from the position relationship of the mark M1 obtained by resolving the image after taking pictures to cam.Then, make cam 11 have rotated count value Z position large like that from the signal initial point of signal ROT_A and be confirmed as pump initial point, therefore, it is possible to obtain the relation of signal initial point and pump initial point easily.
3rd mode of execution
Figure 18 is the concise and to the point figure of an example of pumping section 5 in display the 3rd mode of execution.Also while with reference to Fig. 9 and Figure 10, be described the 3rd mode of execution.
In the third embodiment, the detecting method that pump initial point determines the angle of swing of the cam 11 in the step S23 processed also is changed.That is, detected the position of finger shape plate 22 by image analysis, judge the angle of swing of cam 11 according to testing result.As the detecting method of the position of finger shape plate 22, such as, captured image can be used in step S22 and to detect the edge of finger shape plate 22, and then the angle of swing of location determination cam 11 according to the finger shape plate 22 detected.Owing to arrive this mode in reference position in Fig. 9 for cam 11 during position relationship shown in Figure 10 B with such as finger shape plate 22A ~ 22G, the position relationship of finger shape plate 22 is set up corresponding with the angle of swing of cam 11, thus obtained the configuration of regulation by detecting finger shape plate 22, thus the arrival of cam 11 to reference position can have been known.
Or, also can mark position probing mark M2 as shown in figure 18 in advance in finger shape plate 22, judge the angle of swing of cam 11 according to the change of position probing mark M2 in captured image.In addition, in figure 18, although all indicate in all finger shape plate 22 mark M2, as long as the angle of swing of cam 11 can be determined, then also can in a part of finger shape plate 22 annotated mark M2.
Just as described above, in the third embodiment, judge that cam 11 reaches pump initial point according to the position relationship of the finger shape plate 22 obtained by resolving the image after taking pictures to cam 11.Then, make cam 11 have rotated count value Z position large like that from the signal initial point of signal ROT_A and be confirmed as pump initial point, therefore, it is possible to obtain the relation of signal initial point and pump initial point easily.
Other
Above-mentioned mode of execution, exactly for making understanding of the present invention become easy, is not for explaining the present invention with limiting.The present invention, under the prerequisite not departing from its aim, can carry out changing, improveing, and also comprise its equivalent in the present invention, this point is self-evident simultaneously.Such as, also pump initial point can be obtained by use the first mode of execution and the 3rd mode of execution simultaneously.
Claims (9)
1. a method for liquid transfer, is characterized in that, described method for liquid transfer is the method for liquid transfer of liquid transporting apparatus, and comprises:
Be used in conveying liquid and the cam that rotates rotates from the rotation reference position of described cam;
Stop and the image of the described liquid transporting apparatus arrived of making a video recording after making the rotation of described cam, judge whether described cam has rotated the angle of swing to regulation; And
Store and represent that described cam rotates to the value of the signal of the angle of swing of the described cam till the angle of swing of described regulation from described rotation reference position.
2. method for liquid transfer according to claim 1, is characterized in that, also comprises: marked by the position probing being arranged at described cam from described image detection and detect the angle of swing of described cam.
3. method for liquid transfer according to claim 2, is characterized in that, also comprises: detect the described angle of swing of described cam by detecting the edge of described position probing mark.
4. method for liquid transfer according to claim 1, it is characterized in that, also comprise: by detecting the position pressing the pressing component of the parts of the stream forming described liquid along with the rotation of described cam from described image, and detect the angle of swing of described cam.
5. the method for liquid transfer according to any one in Claims 1-4, is characterized in that, the described liquid after adverse current is returned reflux fraction such many time the angle of swing of described cam as the benchmark of the angle of swing of described regulation.
6. a method for liquid transfer, is characterized in that, described method for liquid transfer is the method for liquid transfer of liquid transporting apparatus, and comprises:
Be used in conveying liquid and the cam that rotates rotates;
Read store, represent that described cam rotates to the value of the signal of the angle of swing of the described cam till the angle of swing of regulation from rotation reference position;
Judge that whether described cam has rotated the angle of swing to described regulation from described reference position; And
As benchmark, described cam is rotated being judged as the position that described cam rotated to the angle of swing of described regulation to desired angle of swing.
7. method for liquid transfer according to claim 6, it is characterized in that, position to the angle of swing of described regulation has been rotated as benchmark using being judged as described cam, make described cam with the speed of regulation, till rotating to the first angle of swing, and described cam is made to rotate to the second angle of swing with the fireballing speed than described regulation from described first angle of swing.
8. the method for liquid transfer according to claim 6 or 7, is characterized in that,
Described storage, represent that described cam rotates to the signal of the angle of swing of the described cam till the angle of swing of regulation value from rotation reference position is
Described cam is rotated from described reference position, according to make described cam rotate after stop and shooting to described liquid transporting apparatus spectral discrimination described in cam whether rotated to regulation angle of swing, then represent that described cam rotates to the value of the signal of the angle of swing of the described cam till the angle of swing of described regulation from described rotation reference position.
9. a liquid transporting apparatus, is characterized in that, possesses:
Cam, rotates for carrying liquid; And
Control device,
Wherein, described control device
Read store, represent that described cam rotates to the value of the signal of the angle of swing of the described cam till the angle of swing of regulation from rotation reference position,
Judge that whether described cam has rotated the angle of swing to described regulation from described reference position, and
As benchmark, described cam is rotated being judged as the position that described cam rotated to the angle of swing of described regulation to desired angle of swing.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2014016650A JP2015143487A (en) | 2014-01-31 | 2014-01-31 | Liquid transportation device |
| JP2014-016650 | 2014-01-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104819149A true CN104819149A (en) | 2015-08-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510015456.XA Pending CN104819149A (en) | 2014-01-31 | 2015-01-12 | Liquid transport method and liquid transport apparatus |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US20150219092A1 (en) |
| JP (1) | JP2015143487A (en) |
| CN (1) | CN104819149A (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5779848B2 (en) * | 2010-07-30 | 2015-09-16 | セイコーエプソン株式会社 | Liquid ejection device, more than liquid ejection device drive method |
-
2014
- 2014-01-31 JP JP2014016650A patent/JP2015143487A/en active Pending
-
2015
- 2015-01-12 CN CN201510015456.XA patent/CN104819149A/en active Pending
- 2015-01-29 US US14/608,529 patent/US20150219092A1/en not_active Abandoned
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| JP2015143487A (en) | 2015-08-06 |
| US20150219092A1 (en) | 2015-08-06 |
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