CN209405391U - The device that a kind of pair of infusion pump driving direction and accuracy are detected - Google Patents
The device that a kind of pair of infusion pump driving direction and accuracy are detected Download PDFInfo
- Publication number
- CN209405391U CN209405391U CN201821560354.1U CN201821560354U CN209405391U CN 209405391 U CN209405391 U CN 209405391U CN 201821560354 U CN201821560354 U CN 201821560354U CN 209405391 U CN209405391 U CN 209405391U
- Authority
- CN
- China
- Prior art keywords
- stepper motor
- code
- optical coupling
- drive shaft
- slot optical
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000001802 infusion Methods 0.000 title claims abstract description 16
- 230000008878 coupling Effects 0.000 claims abstract description 21
- 238000010168 coupling process Methods 0.000 claims abstract description 21
- 238000005859 coupling reaction Methods 0.000 claims abstract description 21
- 230000003287 optical effect Effects 0.000 claims abstract description 19
- 238000001514 detection method Methods 0.000 claims abstract description 17
- 230000005540 biological transmission Effects 0.000 claims description 6
- 230000006378 damage Effects 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 235000013399 edible fruits Nutrition 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 210000001124 body fluid Anatomy 0.000 description 1
- 239000010839 body fluid Substances 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N ferric oxide Chemical compound O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000005693 optoelectronics Effects 0.000 description 1
- 230000002572 peristaltic effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The utility model discloses the devices that a kind of pair of infusion pump driving direction and accuracy are detected, comprising: drive shaft, dicode disk, the first slot optical coupling and the second slot optical coupling；The output end of the stepper motor of infusion pump described in the driving axis connection；The dicode disk is fixed in the drive shaft, including two code-discs that are identical and being coaxially disposed by drive shaft；Each code-disc edge has the dentalation being uniformly distributed circumferentially, and is not overlapped in axis projection；The drive shaft can be under stepper motor driving, the dicode disk is driven to rotate synchronously, and then after cutting the dentalation of the dicode disk to the light-path of first slot optical coupling and second slot optical coupling respectively, the different low and high level signal of two-way is obtained；The rotation direction and state of the stepper motor are obtained after the two-way low and high level signal is analyzed.The utility model improves detection speed and precision, improves detection stability, avoids the damage to human body.
Description
Technical field
The utility model relates to infusion pump detection technique fields, particularly relate to a kind of quickly to infusion pump driving direction and essence
The device that exactness is detected.
Background technique
At home and abroad during clinical injection, infusion pump is a kind of syringe or class by one or more single actions
The equipment of injection patient's body fluid flow is controlled like container.Syringe pushing block is either pushed, or squeezes infusion pipeline
Method, essence is that driving system of stepping motor drives push rod or peristaltic action to reach liquid with precise control flow
Purpose.
Currently, infusion pump drive system mostly uses greatly the structure of slot optical coupling and code-disc to detect driving condition.Code
Disk is fixed on stepper motor drive shaft, and accounting different light transmission and light tight region, stepper motor rotation are provided on code-disc
Code-disc is driven to cut the light-path of slot optical coupling, thus the low and high level signal that output duration is different.By right
The level signal of optoelectronic switch output is analyzed, and can learn the operating condition of stepper motor.This method requires code-disc to turn
A dynamic bigger angle or complete one week determine dead-center position, and then detect stepper motor positive-negative rotation state.It is existing
Have device detection time long, accuracy is not high, infusion pump easily cause harm to the human body in use and pain.
Utility model content
In view of this, the purpose of this utility model is that proposing that a kind of pair of infusion pump driving direction and accuracy detect
Device, comprising: drive shaft, dicode disk, the first slot optical coupling and the second slot optical coupling；Infusion pump described in the driving axis connection
Stepper motor output end；The dicode disk is fixed in the drive shaft, including two identical and pass through the drive
The code-disc of moving axis coaxial arrangement；Each code-disc edge has the dentalation being uniformly distributed circumferentially, in axis projection
It is not overlapped；The drive shaft can drive the dicode disk to rotate synchronously under stepper motor driving, and then make described double
After the dentalation of code-disc respectively cuts the light-path of first slot optical coupling and second slot optical coupling,
Obtain the different low and high level signal of two-way；The operating of the stepper motor is obtained after the two-way low and high level signal is analyzed
Direction and state.
The device, the dentalation of each code-disc include: dentation lightproof area and groove transmission region.
The device, each code-disc include 12 dentalations.
The device, two code-discs are each code perpendicular to the differential seat angle of the axial direction in the dicode disk
The half of central angle shared by the single dentalation of disk.
Minimum rotation angle needed for described device completes detection is identical as the differential seat angle of the dicode disk axial direction.
Described device includes two timer modules, is respectively intended to obtain the stepper motor pulse signal.
Described device includes warning piece, which is used to detect the unusual condition of the stepper motor in described device
When, issue audible and visible alarm.
From above, provided by the utility model is a kind of quickly to detect to infusion pump driving direction and accuracy
Device and method the speed of detection is accelerated by the setting of dicode disk, increase the precision of detection, code-disc rotate
Smaller angle in the short time, is used for quickly detecting stepper motor positive-negative rotation state, avoids infusion pump in use
It causes harm to the human body.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is the utility model embodiment device overall structure side schematic view；
Fig. 2 is the utility model embodiment dicode dish structure front schematic view；
Fig. 3 is the utility model embodiment dicode dish structure schematic diagram；
Fig. 4 is the utility model embodiment dicode dish structure side schematic view；
Fig. 5 is the utility model embodiment stepper motor when rotating and reverse, the waveform diagram of A phase and B phase.
Specific embodiment
For the purpose of this utility model, technical solution and advantage is more clearly understood, below in conjunction with specific embodiment, and
Referring to attached drawing, the utility model is further described.
It should be noted that all statements for using " first " and " second " are for area in the utility model embodiment
Be divided to two non-equal entities of same names or non-equal parameter, it is seen that " first " " second " only for statement convenience,
It should not be construed as the restriction to the utility model embodiment, subsequent embodiment no longer illustrates this one by one.
Utility model device overall structure is as shown in Figure 1, include stepper motor 1, drive shaft 2, dicode disk 3, the first slot
Type optocoupler 4 and the second slot optical coupling 5 composition.The dicode disk is fixed on stepper motor drive shaft, including two identical
Code-disc, each code-disc edge have uniform dentalation, be not overlapped in axis projection；Code-disc is circumferential according to actual needs
Be uniformly distributed the dentation lightproof area and groove transmission region occurred in pairs, distributed quantity according to detection rapidity and with groove profile light
The light slit width needs of coupling are increased and decreased.Stepper motor rotation is to drive dicode disk to rotate synchronously, the dentation on dicode disk
When lightproof area passes through slot optical coupling, detection circuit exports high level signal, when groove transmission region passes through slot optical coupling, inspection
Slowdown monitoring circuit exports low level signal, therefore can obtain the square-wave signal that two-way duty ratio is 50%.Because of two slot optical coupling water
Flat raft column, each shading tooth of two code-discs and light transmission recess angle are all the same, and two code-disc difference angles are just single
The half of a shading tooth, so 90 ° of phase difference of the two-way square-wave signal phase detected.Assuming that wherein passing through the first groove profile light all the way
Coupling obtains A phase output signal, in addition obtains B phase output signal by the second slot optical coupling all the way, is illustrated in figure 5 stepper motor
When rotating and reverse, the waveform diagram of A phase output signal and B phase output signal.It is obtained by analyzing the two-way level signal
The operating condition of stepper motor.
Stepper motor rotates one week, can generate the square wave that periodicity is 12, therefore each period stepper motor rotational angle
It is 360 °/12=30 °.In one cycle, 4 hopping edges can be detected respectively in A phase and B phase, in each hopping edge signal
By judging that the low and high level state of another phase square-wave signal at this time learns that stepper motor is forward or reverse at this time when generation.Institute
To judge the angle rotated needed for stepper motor positive and negative rotation for 30 °/4=7.5 °.7.5 ° of time is rotated in stepper motor,
The rotation direction for detecting stepper motor, shortens detection time.Described device stepper motor can survey minimum rotation angle and double
The axial difference of code-disc is identical.
The timer capture input module that microcontroller is arranged captures the hopping edge of A phase and B phase, interrupts in different hopping edges
In an other phase low and high level and stepper motor positive-negative rotation state it is as shown in table 1.In embodiment: assuming that capturing A first
Phase rising edge, if inquiry B phase signals are in high level at this time, stepper motor is inverted status；Inquire B phase signals such as at this time
Fruit is in low level, then stepper motor is rotating forward state.In practice, after stepper motor setting in motion, first it is detected that can
It can be A phase high level, A phase low level, B phase high level, any one effective edge in four kinds of B phase low level along event.Including
A, B phase signal output waveform map analysis of this dicode dish structure output obtain the following table 1 stepper motor turn signal table, by looking into
The high low state of level for asking another phase when effective edge arrives along event can judge stepper motor positive and negative rotation.
Table 1
In addition, being realized also with described device at lesser turn to be monitored to drive system running precision
Judge in dynamic angular range whether stepper motor loses step.Specific implementation is that the timer module pair of microcontroller is arranged
Step motor control pulse carries out counting PulseCnt, and pulse count value is judged in the timer interruption, such as
Fruit counted number of pulses is greater than the maximum count value that A phase hopping edge time interval adjacent with B phase allows, then it is assumed that stepper motor loses
Step, it is out of service and issue sound-light alarm.In addition setting timer capture input module captures the output signal of A phase and B phase,
Stepper motor step-by-step counting variable is zeroed out in hopping edge.In the present invention, stepper motor step pitch angle is
1.8 °, high-subdividing number is segmented for 256, and one hopping edge event of every generation, and stepper motor rotational angle is 7.5 °, so adjacent
Step motor control umber of pulse maximum permissible value (PluseMax) is 7.5 °/1.8 ° * 256 ≈ 1067 in the interval of events of hopping edge,
If PulseCnt > PluseMax, step out of stepping motor is detected, stop stepper motor and run and issue sound-light alarm.
For the method for stepper motor running accuracy quickly detected, before starting injection operation, system can be arranged
Two variables PluseCnt and PluseMax, based on step motor control pulse of the PluseCnt by exporting to single-chip microcontroller carries out
Number, PluseMax are the constants that parameter and code-disc Tooth Number Calculation are driven according to stepper motor, which is formula:
Stepper motor rotational angle/stepper motor step pitch angle * device setting resulting numerical value of high-subdividing number.In the utility model reality
In example, stepper motor step angle is 1.8 °, and high-subdividing number is segmented for 256, and one effective hopping edge of every generation, stepper motor
Rotational angle is 7.5 °, so PluseMax is 7.5 °/1.8 ° * 256 ≈ 1067.In addition, two timers of configuration are respectively intended to
Capture effective hopping edge of A, B phase waveform of stepper motor pulse signal and the output of two flute profile optocouplers.When in A phase or B phase
When capturing effective hopping edge signal, pulse count value PluseCnt is reset, and the beginning of a detection cycle is represented, at this
In a detection cycle, often capturing a stepper motor pulse signal, then pulse count value adds 1, while judging pulse at this time
Whether count value has been more than maximum number of pulses limit value in the detection cycle.If so, detecting step out of stepping motor, stop step
Into motor operation and issue sound-light alarm.Until next A, B phase effectively hopping edge be detected, reenter next round detection
Period.
Utility model device, structure is simple, quick and easy for installation, and quickly, precision is high for detection.Detection method is easy to be fast
Speed, alarm are obvious.Avoid the injury to patient.
It should be understood by those ordinary skilled in the art that: the discussion of any of the above embodiment is exemplary only, not
It is intended to imply that the scope of the present disclosure (including claim) is limited to these examples；Under the thinking of the utility model, the above reality
Applying can also be combined between the technical characteristic in example or different embodiments, and there are the utility model as described above
Many other variations of different aspect, for simplicity, they are not provided in details.Therefore, all spirit in the utility model
Within principle, any omission, modification, equivalent replacement, improvement for being made etc. should be included in the protection scope of the utility model
Within.
Claims (7)
1. the device that a kind of pair of infusion pump driving direction and accuracy are detected characterized by comprising drive shaft, dicode
Disk, the first slot optical coupling and the second slot optical coupling；The output end of the stepper motor of infusion pump described in the driving axis connection；It is described
Dicode disk is fixed in the drive shaft, including two code-discs that are identical and being coaxially disposed by the drive shaft；Each
The code-disc edge has the dentalation being uniformly distributed circumferentially, and is not overlapped in axis projection；The drive shaft can be
Under the stepper motor driving, the dicode disk is driven to rotate synchronously, and then distinguish the dentalation of the dicode disk
After cutting to the light-path of first slot optical coupling and second slot optical coupling, the different low and high level of two-way is obtained
Signal；The rotation direction and state of the stepper motor are obtained after the two-way low and high level signal is analyzed.
2. the apparatus according to claim 1, which is characterized in that the dentalation of each code-disc includes: dentation shading
Region and groove transmission region.
3. the apparatus according to claim 1, which is characterized in that each code-disc includes 12 dentalations.
4. device according to claim 1 to 3, which is characterized in that two code-discs hang down in the dicode disk
Directly in the half that the differential seat angle of the axial direction is central angle shared by the single dentalation of each code-disc.
5. device according to claim 4, which is characterized in that described device complete detection needed for minimum rotation angle with
The differential seat angle of the dicode disk axial direction is identical.
6. the apparatus according to claim 1, which is characterized in that described device includes two timer modules, is respectively intended to
To the hopping edge event of the stepper motor pulse count signal and capture two-way flute profile optocoupler output signal.
7. the apparatus according to claim 1, which is characterized in that described device includes warning piece, which is used in institute
When stating device and detecting the unusual condition of the stepper motor, audible and visible alarm is issued.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821560354.1U CN209405391U (en) | 2018-09-25 | 2018-09-25 | The device that a kind of pair of infusion pump driving direction and accuracy are detected |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821560354.1U CN209405391U (en) | 2018-09-25 | 2018-09-25 | The device that a kind of pair of infusion pump driving direction and accuracy are detected |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209405391U true CN209405391U (en) | 2019-09-20 |
Family
ID=67930918
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821560354.1U Active CN209405391U (en) | 2018-09-25 | 2018-09-25 | The device that a kind of pair of infusion pump driving direction and accuracy are detected |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209405391U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109172935A (en) * | 2018-09-25 | 2019-01-11 | 湖南比扬医疗科技有限公司 | The device and method that a kind of pair of infusion pump driving direction and accuracy are detected |
| CN117357744A (en) * | 2023-12-05 | 2024-01-09 | 深圳市恒永达科技股份有限公司 | Linear precision control device, control method and injection pump |
-
2018
- 2018-09-25 CN CN201821560354.1U patent/CN209405391U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109172935A (en) * | 2018-09-25 | 2019-01-11 | 湖南比扬医疗科技有限公司 | The device and method that a kind of pair of infusion pump driving direction and accuracy are detected |
| CN109172935B (en) * | 2018-09-25 | 2024-06-25 | 湖南比扬医疗科技有限公司 | Device and method for detecting driving direction and accuracy of infusion pump |
| CN117357744A (en) * | 2023-12-05 | 2024-01-09 | 深圳市恒永达科技股份有限公司 | Linear precision control device, control method and injection pump |
| CN117357744B (en) * | 2023-12-05 | 2024-02-13 | 深圳市恒永达科技股份有限公司 | Linear precision control device, control method and injection pump |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN209405391U (en) | The device that a kind of pair of infusion pump driving direction and accuracy are detected | |
| CN109172935A (en) | The device and method that a kind of pair of infusion pump driving direction and accuracy are detected | |
| CN101825484B (en) | Malfunction detection method of incremental encoder | |
| JPH0345657B2 (en) | ||
| CN103913591B (en) | Slewing rotating speed measurement method and device | |
| CN103368496B (en) | A kind of converter M/T velocity-measuring system based on DSP and method | |
| CN105797234B (en) | The control method and device of infusion pump | |
| CN103162725A (en) | Photoelectric encoder rotating pulse display device | |
| CN108226560A (en) | A kind of method and device for obtaining motor slow-speed of revolution angular speed | |
| CN106802597B (en) | A kind of incremental optical electric axial angle encoder data processing equipment and processing method | |
| CN203069612U (en) | Photoelectric encoder pulse/rotation speed analog signal fast conversion circuit | |
| CN209934982U (en) | Medical automatic positioning centrifuge | |
| US4634859A (en) | Optical encoder with two photosensors | |
| CN103191486A (en) | Syringe push pump | |
| JPH11267202A (en) | Transfusion device | |
| CN203169740U (en) | Injector pushing-injecting pump | |
| CN206531869U (en) | A kind of automobile engine speed measuring device | |
| CN205280113U (en) | Testing arrangement of generator incremental encoder | |
| CN102981015A (en) | Infrared digital speed-detection control system for gear purpose | |
| CN205145273U (en) | Infusion pump | |
| CN207923907U (en) | A kind of turntable positioning device | |
| CN103191484A (en) | Infusion pump | |
| CN207164081U (en) | A kind of speed measuring system | |
| CN208383910U (en) | A kind of monitoring device of the revolving speed for high rotation speed servo motor | |
| CN101299021A (en) | Biochemistry instrument grating positioning apparatus |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A device for detecting the driving direction and accuracy of the infusion pump Effective date of registration: 20221028 Granted publication date: 20190920 Pledgee: Hunan Xiangjiang Zhongying Investment Management Co.,Ltd. Pledgor: HUNAN BEYOND MEDICAL TECHNOLOGY CO.,LTD. Registration number: Y2022980020185 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Granted publication date: 20190920 Pledgee: Hunan Xiangjiang Zhongying Investment Management Co.,Ltd. Pledgor: HUNAN BEYOND MEDICAL TECHNOLOGY CO.,LTD. Registration number: Y2022980020185 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right |