CN103656797A - Injection pump - Google Patents
Injection pump Download PDFInfo
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- CN103656797A CN103656797A CN201310685203.4A CN201310685203A CN103656797A CN 103656797 A CN103656797 A CN 103656797A CN 201310685203 A CN201310685203 A CN 201310685203A CN 103656797 A CN103656797 A CN 103656797A
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- syringe pump
- magnet
- injection
- injection speed
- processor
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Abstract
The invention discloses an injection pump which is characterized in that the injection speed of the injection pump is detected with a radial magnet and a magnetic resistance sensor. The principle of the injection pump is that when a transmission device of the injection pump drives an injection piston to move, the magnet and the magnetic resistance sensor synchronously and linearly move, and the magnet rotates. A processor determines the linear displacement and the linear speed of the magnet within a preset time according to the rotation angle, detected by the magnetic resistance sensor, of the magnet. As the magnetic resistance sensor is a non-contact type sensor, influences of friction force on the magnetic resistance sensor can be avoided, and the detection accuracy of the injection speed of the injection pump is improved.
Description
Technical field
The present invention relates to micro-injection, relate in particular a kind of syringe pump.
Background technology
Syringe pump is a kind of automated injection device that syringe is adnexa of take, and compares with traditional hand injection mode, has the feature of high accuracy injection.
In order to guarantee the injection precision of syringe pump, need in real time the injection speed of syringe pump to be detected and adjusted, so that the injection speed of syringe pump reaches default requirement.
Current syringe pump adopts resistance sensor to detect the injection speed of syringe pump conventionally.This resistance sensor is connected with the actuating device of syringe pump by slide plate, determines the injection speed of syringe pump according to the variation of linear transducer self-resistance, and then the injection speed of syringe pump is regulated.Because resistance sensor is touch sensor, slide plate and resistance are that the contact portion of sensor is often worn, and cause component failure and produce fault, can not carry out accuracy detection
Summary of the invention
In view of this, the invention provides a kind of syringe pump, to improve the accuracy of detection of the injection speed of syringe pump.
For achieving the above object, the invention provides following technical scheme:
A syringe pump, comprising:
Magnet and for detection of the magnetoresistive transducer of described magnet rotational angle;
Drive described magnetoresistive transducer and the motion of described magnet synchronous linear, and drive the actuating device of described magnet radial rotating, wherein said actuating device is connected with the syringe piston of described syringe pump;
Be connected according to magnet rotational angle, to calculate the processor of the injection speed of syringe pump with described magnet sensor.
Preferably, described syringe pump also comprises: the alarm being connected with described processor;
When determining that the injection speed of described syringe pump exceeds preset range, described alarm sends alarm signal.
Preferably, described processor, when the injection speed of determining described syringe pump exceeds preset range, regulates the transmission speed of described actuating device, to regulate the injection speed of described syringe pump.
Preferably, described actuating device comprises: frame, be fixed on tooth bar in described frame, with described tooth bar meshed gears group and the motor that drives described gear train to rotate;
Wherein, described motor rotates by magnet described in described gear set drive.
Preferably, in described gear train, described electric machine built-in housing.
Preferably, described transfer device also comprises: for connecting the support of described magnetoresistive transducer and described housing.
Preferably, described gear train comprises: the driving gear being connected with described tooth bar with described motor;
Driven gear with described driving gear engagement;
Wherein, described driven gear drives described magnet to rotate.
Preferably, described driven gear is provided with groove;
Described magnet is built in the groove of described driven gear.
Preferably, also comprise: be connected with described processor, show the display of described ejection of syringe pump speed.
Preferably, described magnet is radial magnet.
Known via above-mentioned technical scheme, compared with prior art, the present invention openly provides a kind of syringe pump, and this syringe pump adopts magnet and magnetoresistive transducer to detect the injection speed of syringe pump.Its principle is: when the actuating device of syringe pump drives syringe piston motion, and magnet and the motion of magnetoresistive transducer synchronous linear, and magnet radial rotating.The rotational angle of the magnet that processor detects according to magnetoresistive transducer, determines straight-line displacement and the speed of magnet in Preset Time.Because magnetoresistive transducer is noncontacting proximity sensor, thereby can avoid frictional force for the impact of magnetoresistive transducer, improve ejection of syringe pump speed accuracy of detection.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only embodiments of the invention, for those of ordinary skills, do not paying under the prerequisite of creative work, other accompanying drawing can also be provided according to the accompanying drawing providing.
Fig. 1 shows the structural representation of an embodiment of a kind of syringe pump of the present invention;
Fig. 2 shows the mechanical connection schematic diagram of an embodiment of a kind of syringe pump of the present invention.
The specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Embodiment based in the present invention, those of ordinary skills, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
Syringe pump is a kind of by machinery pushing syringe, to realize high accuracy, and steadily no pulse injection.Compare with traditional hand injection mode, syringe pump, in a lot of technical fields, is widely used.
In order further to improve the injection precision of syringe pump, referring to Fig. 1 to Fig. 2, show structural representation and the mechanical connection schematic diagram of an embodiment of a kind of syringe pump of the present invention.In the present embodiment, this syringe pump detects the injection speed of syringe pump according to magnetic induction principle.Concrete, this syringe pump comprises: magnet 1, for detection of magnetoresistive transducer 2, actuating device and the processor 3 of the rotational angle of magnet 1.It should be noted that, this actuating device is also connected with the injection ram of syringe pump, for promoting the injection ram of syringe pump.
Wherein, magnet 1 is all connected with actuating device with magnetoresistive transducer 2.Actuating device drives magnet 1 and magnetoresistive transducer 2 synchronous linear motions.And magnet 1 is carrying out the straight-line while, the rotating shaft around self under the drive of actuating device is rotated.And then the rotational angle of the magnet 1 that processor 3 detects according to magnetoresistive transducer 2 calculates the injection speed of syringe pump.Optionally, the pre-stored quantitative relation that has magnet 1 rotational angle and straight-line displacement in processor 3.First according to magnet 1, the rotational angle in Preset Time calculates the straight-line displacement of magnet 1 within this time period to processor 3, and then calculates the speed of magnet 1 within this time period, the i.e. injection speed of syringe pump.It should be noted that, in actual application, this Preset Time section is shorter, and accuracy of detection is higher.
From above-mentioned annexation: when the actuating device of syringe pump promotes injection ram, the magnet being connected with actuating device and magnetoresistive transducer are followed piston moving linearly.Because magnet encloses and rotates around the axis in moving linearly, thereby change by the magnetic line of force of magnetoresistive transducer.This magnetoresistive transducer can be determined according to the variation of the magnetic line of force rotational angle of magnet.And then processor, according to the rotational angle at Preset Time inner magnet, is determined the straight-line displacement of magnet, and is calculated the linear running speed of magnet, the namely injection speed of syringe pump.It should be noted that, the rotational angle of magnet is relevant to the straight-line displacement of magnet.That is to say, when magnet rotates one week, the linear running displacement of corresponding magnet is definite value.
Optionally, in the present embodiment, this device also comprises: the alarm 4 being connected with processor 3.When processor 4 determines that the current injection speed of syringe pump has exceeded default scope, processor 3 sends corresponding signal to this alarm, and alarm is reported to the police, thereby reminds staff, to avoid occurring operational error.
This device also comprises: the display 5 being connected with processor 3.This display 5 can show the injection speed of syringe pump and current injection volume in real time, i.e. the displacement of injection ram, to facilitate those skilled in the art to operate syringe pump.
Optionally, this processor 3 is at the injection speed of determining syringe pump during not in preset range, stops injection controlling syringe pump, and also the injection speed of scalable syringe pump, meets the demands the injection speed of syringe pump.In the present embodiment, above-mentioned two kinds of control modes are all in protection scope of the present invention.
Magnetoresistive transducer in the present invention is noncontacting proximity sensor, compare with the resistance sensor of available technology adopting, magnetoresistive transducer has been avoided the friction of slide plate and resistance in traditional electrical resistive sensor, thereby can not be subject to the impact of frictional force, has improved the accuracy of detection of injection speed.
It should be noted that, the present invention adopts magnet and the motion of magnetoresistive transducer synchronous linear, and the mode that magnet rotates around the rotating shaft of self in moving linearly detects the rotational angle of magnet, and then the rotational angle of magnet is converted to the straight-line displacement of magnet.Compare with fixed magnets or magnetoresistive transducer in a device, detect the mode of the position of another device, in the present invention, due to magnet and magnetoresistive transducer straight line synchronizing moving, thereby can not be subject to the impact of the magnetic field range of magnet.
In the present embodiment, this actuating device is concrete adopts gear-driven mode to drive magnet and magnetoresistive transducer motion.
Concrete, this actuating device comprises: driving gear 21, driven gear 22, tooth bar 23 and frame 24.Wherein, tooth bar 23 is fixed in frame 24, and 23 engagements of driving gear 21 and tooth bar are connected, when driving gear 21 during rectilinear motion, drives driven gear 22 rotations that are connected with driving gear on tooth bar 23.It should be noted that, this driving gear 21 is connected with motor (not shown in FIG.), thereby realizes the rectilinear motion of driving gear 21 on tooth bar and the rotation of driven gear 21.
Optionally, be provided with groove 25 on driven gear 21, and magnet 1 is fixed in this groove 25, magnet 1 is followed driven gear 21 initiatively.It should be noted that, in the present embodiment, this driven gear 21, driving gear 22 and motor are all arranged in a housing 26, and magnetoresistive transducer 2 is fixed on this housing 26, to realize being synchronized with the movement of magnet 1 and magnetoresistive transducer 2.Optionally, this magnetoresistive transducer 2 can be arranged on by support the top of magnet 1, so that 1 magnetic line of force of magnet runs through magnetoresistive transducer 2.
In this description, each embodiment adopts the mode of going forward one by one to describe, and each embodiment stresses is the difference with other embodiment, between each embodiment identical similar part mutually referring to.
Above-mentioned explanation to the disclosed embodiments, makes professional and technical personnel in the field can realize or use the present invention.To the multiple modification of these embodiment, will be apparent for those skilled in the art, General Principle as defined herein can, in the situation that not departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention will can not be restricted to these embodiment shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (10)
1. a syringe pump, is characterized in that, comprising:
Magnet and for detection of the magnetoresistive transducer of described magnet rotational angle;
Drive described magnetoresistive transducer and the motion of described magnet synchronous linear, and drive the actuating device of described magnet radial rotating, wherein said actuating device is connected with the syringe piston of described syringe pump;
Be connected according to magnet rotational angle, to calculate the processor of the injection speed of syringe pump with described magnet sensor.
2. syringe pump according to claim 1, is characterized in that, described syringe pump also comprises: the alarm being connected with described processor;
When determining that the injection speed of described syringe pump exceeds preset range, described alarm sends alarm signal.
3. device according to claim 1, is characterized in that, described processor, when the injection speed of determining described syringe pump exceeds preset range, regulates the transmission speed of described actuating device, to regulate the injection speed of described syringe pump.
4. according to the syringe pump described in claim 1,2 or 3, it is characterized in that, described actuating device comprises: frame, be fixed on tooth bar in described frame, with described tooth bar meshed gears group and the motor that drives described gear train to rotate;
Wherein, described motor rotates by magnet described in described gear set drive.
5. syringe pump according to claim 4, is characterized in that, in described gear train, described electric machine built-in housing.
6. syringe pump according to claim 5, is characterized in that, described transfer device also comprises: for connecting the support of described magnetoresistive transducer and described housing.
7. syringe pump according to claim 4, is characterized in that, described gear train comprises: the driving gear being connected with described tooth bar with described motor;
Driven gear with described driving gear engagement;
Wherein, described driven gear drives described magnet to rotate.
8. syringe pump according to claim 7, is characterized in that, described driven gear is provided with groove;
Described magnet is built in the groove of described driven gear.
9. syringe pump according to claim 1, is characterized in that, also comprises: be connected with described processor, show the display of described ejection of syringe pump speed.
10. syringe pump according to claim 1, is characterized in that, described magnet is radial magnet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310685203.4A CN103656797B (en) | 2013-12-13 | 2013-12-13 | A kind of syringe pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310685203.4A CN103656797B (en) | 2013-12-13 | 2013-12-13 | A kind of syringe pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103656797A true CN103656797A (en) | 2014-03-26 |
| CN103656797B CN103656797B (en) | 2016-02-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310685203.4A Expired - Fee Related CN103656797B (en) | 2013-12-13 | 2013-12-13 | A kind of syringe pump |
Country Status (1)
| Country | Link |
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| CN (1) | CN103656797B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015158230A1 (en) * | 2014-04-14 | 2015-10-22 | 江苏多维科技有限公司 | Micro guiding screw pump using magnetic resistance sensor and manufacturing method therefor |
| CN105288783A (en) * | 2015-10-08 | 2016-02-03 | 深圳康罗技术有限公司 | Injection pump as well as position detection method and device of injection pump sliding block |
| CN107349492A (en) * | 2017-07-04 | 2017-11-17 | 聊城市斐然实凯科技有限公司 | A kind of syringe pump |
| US10238793B2 (en) | 2014-02-20 | 2019-03-26 | Multidimension Technology Co., Ltd | Precision syringe pump and manufacturing method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006281178A (en) * | 2005-04-05 | 2006-10-19 | Noiberuku Kk | Syringe pump |
| CN101644631A (en) * | 2008-08-06 | 2010-02-10 | 北京谊安医疗系统股份有限公司 | Syringe pump fault detecting device |
| CN103191486A (en) * | 2013-04-10 | 2013-07-10 | 苏州泽德医疗器械有限公司 | Syringe push pump |
| CN203075363U (en) * | 2012-12-28 | 2013-07-24 | 刘仲馨 | Injection pump operation monitoring device based on angular displacement sensor |
| CN203663179U (en) * | 2013-12-13 | 2014-06-25 | 北京中金硅谷科技有限公司 | Injection pump |
-
2013
- 2013-12-13 CN CN201310685203.4A patent/CN103656797B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006281178A (en) * | 2005-04-05 | 2006-10-19 | Noiberuku Kk | Syringe pump |
| CN101644631A (en) * | 2008-08-06 | 2010-02-10 | 北京谊安医疗系统股份有限公司 | Syringe pump fault detecting device |
| CN203075363U (en) * | 2012-12-28 | 2013-07-24 | 刘仲馨 | Injection pump operation monitoring device based on angular displacement sensor |
| CN103191486A (en) * | 2013-04-10 | 2013-07-10 | 苏州泽德医疗器械有限公司 | Syringe push pump |
| CN203663179U (en) * | 2013-12-13 | 2014-06-25 | 北京中金硅谷科技有限公司 | Injection pump |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10238793B2 (en) | 2014-02-20 | 2019-03-26 | Multidimension Technology Co., Ltd | Precision syringe pump and manufacturing method thereof |
| WO2015158230A1 (en) * | 2014-04-14 | 2015-10-22 | 江苏多维科技有限公司 | Micro guiding screw pump using magnetic resistance sensor and manufacturing method therefor |
| US10232109B2 (en) | 2014-04-14 | 2019-03-19 | MultiDimension Technology Co., Ltd. | Mini lead screw pump utilizing a magnetoresistive sensor and manufacturing method thereof |
| CN105288783A (en) * | 2015-10-08 | 2016-02-03 | 深圳康罗技术有限公司 | Injection pump as well as position detection method and device of injection pump sliding block |
| CN105288783B (en) * | 2015-10-08 | 2018-09-21 | 深圳市仕浦电气有限公司 | The method for detecting position and device of syringe pump, syringe pump sliding block |
| CN107349492A (en) * | 2017-07-04 | 2017-11-17 | 聊城市斐然实凯科技有限公司 | A kind of syringe pump |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103656797B (en) | 2016-02-17 |
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Granted publication date: 20160217 Termination date: 20201213 |
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