CN103656797B - A kind of syringe pump - Google Patents
A kind of syringe pump Download PDFInfo
- Publication number
- CN103656797B CN103656797B CN201310685203.4A CN201310685203A CN103656797B CN 103656797 B CN103656797 B CN 103656797B CN 201310685203 A CN201310685203 A CN 201310685203A CN 103656797 B CN103656797 B CN 103656797B
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- Prior art keywords
- syringe pump
- magnet
- magnetoresistive transducer
- actuating device
- pump according
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Abstract
Present disclosure provides a kind of syringe pump, this syringe pump adopts radial 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 to move, magnet and the motion of magnetoresistive transducer synchronous linear, and magnet rotates.The rotational angle of the magnet that processor detects according to magnetoresistive transducer, determines the straight-line displacement of magnet in Preset Time and speed.Because magnetoresistive transducer is noncontacting proximity sensor, frictional force thus can be avoided for the impact of magnetoresistive transducer, improve ejection of syringe pump velocity measuring precision.
Description
Technical field
The present invention relates to micro-injection, relate to a kind of syringe pump in particular.
Background technology
The automated injection device of syringe pump to be a kind of with syringe be adnexa, compared with traditional hand injection mode, has the feature of high accuracy injection.
In order to ensure the injection precision of syringe pump, need detect the injection speed of syringe pump in real time and adjust, with the requirement making the injection speed of syringe pump reach default.
Current syringe pump adopts resistance sensor to detect the injection speed of syringe pump usually.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 change of linear transducer self-resistance, and then regulates the injection speed of syringe pump.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 kind of syringe pump, comprising:
Magnet and the magnetoresistive transducer for detecting described magnet rotational angle;
Drive described magnetoresistive transducer and described mag-net synchronous rectilinear motion, 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 with described magnet sensor the processor of the injection speed to calculate syringe pump according to magnet rotational angle.
Preferably, described syringe pump also comprises: the alarm be 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 determining that the injection speed of 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, the tooth bar be fixed in described frame, with described tooth bar meshed gears group and the motor that drives described gear train to rotate;
Wherein, described motor is rotated 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 be connected with described tooth bar with described motor;
The driven gear engaged with described driving gear;
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, present disclosure provides a kind of syringe pump, 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 to move, 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 the straight-line displacement of magnet in Preset Time and speed.Because magnetoresistive transducer is noncontacting proximity sensor, frictional force thus can be avoided for the impact of magnetoresistive transducer, improve ejection of syringe pump velocity measuring precision.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments of the invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to the accompanying drawing provided.
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.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained 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 steady no pulse injection.Compared with traditional hand injection mode, syringe pump, in a lot of technical field, is widely used.
In order to improve the injection precision of syringe pump further, show structural representation and the mechanical connection schematic diagram of an embodiment of a kind of syringe pump of the present invention see Fig. 1 to Fig. 2.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 detecting the magnetoresistive transducer 2 of the rotational angle of magnet 1, actuating device and processor 3.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 the motion of magnetoresistive transducer 2 synchronous linear.Further, magnet 1 while carrying out rectilinear motion, around the axis of rotation of self under the drive of actuating device.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 quantitative relation of magnet 1 rotational angle and straight-line displacement is previously stored with in processor 3.First processor 3 calculates the straight-line displacement of magnet 1 within this time period according to the rotational angle of magnet 1 in Preset Time, and then calculates the speed of magnet 1 within this time period, i.e. the injection speed of syringe pump.It should be noted that, in actual application, this preset time period is shorter, and accuracy of detection is higher.
Annexation from above-mentioned: when the actuating device of syringe pump promotes injection ram, the magnet be connected with actuating device and magnetoresistive transducer are with piston moving linearly.Due to magnet while moving linearly around axis of rotation, thus changed by the magnetic line of force of magnetoresistive transducer.This magnetoresistive transducer can determine the rotational angle of magnet according to the change of the magnetic line of force.And then processor, according to the rotational angle at Preset Time inner magnet, determines the straight-line displacement of magnet, and calculate 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, 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 be connected with processor 3.When processor 4 determines the current injection speed of syringe pump beyond the scope preset, processor 3 sends corresponding signal to this alarm, and alarm is reported to the police, thus reminds staff, to avoid occurring operational error.
This device also comprises: the display 5 be 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, operates syringe pump to facilitate those skilled in the art.
Optionally, this processor 3 is when determining the injection speed of syringe pump not in preset range, and stop injection at control syringe pump, the also injection speed of scalable syringe pump, makes the injection speed of syringe pump meet the demands.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, compared with the resistance sensor adopted in prior art, magnetoresistive transducer avoids the friction of slide plate and resistance in traditional resistive sensor, thus can not be subject to the impact of frictional force, improves the accuracy of detection of injection speed.
It should be noted that, the present invention adopts magnet and magnetoresistive transducer synchronous linear to move, and magnet detects the rotational angle of magnet while moving linearly around the mode of the axis of rotation of self, and then the rotational angle of magnet is converted to the straight-line displacement of magnet.Compare and the device of in fixed magnets or magnetoresistive transducer, detect the mode of the position of another device, because magnet and magnetoresistive transducer Linear Synchronous move in the present invention, thus can not be subject to the impact of the magnetic field range of magnet.
In the present embodiment, this actuating device specifically 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 driving gear 21 is connected, when driving gear 21 during rectilinear motion, drives the driven gear 22 be connected with driving gear to rotate on tooth bar 23 with tooth bar 23 engagement.It should be noted that, this driving gear 21 is connected with motor (not shown in FIG.), thus realizes the rectilinear motion of driving gear 21 on tooth bar and the rotation of driven gear 21.
Optionally, driven gear 21 is provided with groove 25, and magnet 1 is fixed in this groove 25, magnet 1 with 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 above magnet 1, runs through magnetoresistive transducer 2 to make 1 magnetic line of force of magnet by Bracket setting.
In this description, each embodiment adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiments, between each embodiment identical similar portion mutually see.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the present invention.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein can without departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (8)
1. a syringe pump, is characterized in that, comprising:
Magnet and the magnetoresistive transducer for detecting described magnet rotational angle;
Drive described magnetoresistive transducer and described mag-net synchronous rectilinear motion, 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 with described magnetoresistive transducer the processor of the injection speed to calculate syringe pump according to magnet rotational angle,
Described actuating device comprises: frame, the tooth bar be fixed in described frame, with described tooth bar meshed gears group and the motor that drives described gear train to rotate;
Wherein, described motor is rotated by magnet described in described gear set drive,
Described gear train comprises: the driving gear be connected with described tooth bar with described motor;
The driven gear engaged with described driving gear;
Wherein, described driven gear drives described magnet to rotate.
2. syringe pump according to claim 1, is characterized in that, described syringe pump also comprises: the alarm be connected with described processor;
When determining that the injection speed of described syringe pump exceeds preset range, described alarm sends alarm signal.
3. syringe pump according to claim 1, is characterized in that, described processor, when determining that the injection speed of described syringe pump exceeds preset range, regulates the transmission speed of described actuating device, to regulate the injection speed of described syringe pump.
4. syringe pump according to claim 1, is characterized in that, in described gear train, described electric machine built-in housing.
5. syringe pump according to claim 4, is characterized in that, described actuating device also comprises: for connecting the support of described magnetoresistive transducer and described housing.
6. syringe pump according to claim 1, is characterized in that, described driven gear is provided with groove;
Described magnet is built in the groove of described driven gear.
7. syringe pump according to claim 1, is characterized in that, also comprises: be connected with described processor, shows the display of described ejection of syringe pump speed.
8. 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 CN103656797A (en) | 2014-03-26 |
| CN103656797B true CN103656797B (en) | 2016-02-17 |
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| 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 |
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| CN (1) | CN103656797B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103768679B (en) | 2014-02-20 | 2016-08-24 | 江苏多维科技有限公司 | Precision syringe pump and manufacture method thereof |
| US10232109B2 (en) | 2014-04-14 | 2019-03-19 | MultiDimension Technology Co., Ltd. | Mini lead screw pump utilizing a magnetoresistive sensor and manufacturing method thereof |
| 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 |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006281178A (en) * | 2005-04-05 | 2006-10-19 | Noiberuku Kk | Syringe pump |
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2013
- 2013-12-13 CN CN201310685203.4A patent/CN103656797B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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| CN103656797A (en) | 2014-03-26 |
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