CN103969696A - Injection pump detecting method and device - Google Patents
Injection pump detecting method and device Download PDFInfo
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- CN103969696A CN103969696A CN201410056382.XA CN201410056382A CN103969696A CN 103969696 A CN103969696 A CN 103969696A CN 201410056382 A CN201410056382 A CN 201410056382A CN 103969696 A CN103969696 A CN 103969696A
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Abstract
The invention discloses an injection pump detecting method and device. The method includes determining the pressure beard by an injector push rod connected to an injection pump; amplifying the pressure through an adjustable magnification circuit according to the pressure; determining the current using state of the injector according to the amplified pressure. By the aid of the method, the accuracy of detection of the injector using state can be improved.
Description
Technical field
The present invention relates to medical machinery field, particularly relate to a kind of detection method and device of syringe pump.
Background technology
When clinical medicine used must be injected by intravenous route, and dosage must be very accurately, very little, the injection speed of total amount needs slowly or long-time constant in the situation that, uses syringe pump (hereinafter to be referred as syringe pump) to realize above-mentioned purpose more.
A kind of typical syringe pump comprise stepper motor, Driving Stepping Motor driver, screw mandrel and support, there is nut moving back and forth etc., nut is connected with the push rod of bolus syringe.When work, Single Chip Microcomputer (SCM) system is sent gating pulse and is made stepper motor rotation, and stepper motor drives screw mandrel by the rotation motion motion that is in line, the push rod of pushing syringe is injected transfusion, the liquid input human body in syringe, by setting the rotational speed of screw rod, accurately adjust the fltting speed of injector push-rod, thereby realize the accurate adjustment of the drug dose of giving.
Whether the pick-up unit of above-mentioned syringe pump need to carry out two kinds of detections conventionally, that is: in the time that push rod is installed, detect push rod and install correctly, and whether signal piping stops up in the time of operation.Detecting push rod while whether correctly installing, the reaction thrust that is subject to of cutting somebody's hair is conventionally less.And in syringe pump operational process, the thrust producing in the time that obstruction occurs pipeline is larger.Amplify by suffered pressure that push rod is cut somebody's hair, and then the current use state of definite syringe.
In existing pick-up unit, the push rod amplifying circuit that suffered pressure amplifies of cutting somebody's hair is had to single enlargement factor conventionally.But pick-up unit when two kinds of measuring abilities, because two pressure under two states have big difference on range, in the time adopting the amplifying circuit of single enlargement factor, easily causes accuracy of detection lower, the defect that reliability is poor more than realizing.
Summary of the invention
The object of this invention is to provide a kind of detection method and device of syringe pump, can improve the accuracy of syringe use state-detection.
For solving the problems of the technologies described above, the invention provides a kind of detection method of syringe pump, comprising:
Determine the suffered pressure of injector push-rod that syringe pump connects;
According to described pressure, utilize enlargement factor conditioned circuit to amplify described pressure;
According to the pressure after amplifying, determine the use state that described syringe is current.
Preferably, described enlargement factor conditioned circuit comprises: have the first amplifying circuit of high-amplification-factor and have the second amplifying circuit of low enlargement factor; According to described pressure, utilize enlargement factor conditioned circuit to amplify described pressure, comprising:
When described pressure is during lower than default first threshold, enable described the first amplifying circuit described pressure is amplified;
When described pressure is during higher than default first threshold, enable described the second amplifying circuit described pressure is amplified.
Preferably, described according to through amplification after pressure, determine the use state that described syringe is current, comprising:
In the time that described pressure after amplifying reaches the Second Threshold of low numerical value, determine that described injector push-rod installation is correct, described syringe is in normal original state;
In the time that described pressure after amplifying reaches the 3rd threshold value of high numerical value, determine the line clogging that described syringe connects.
The present invention also provides a kind of pick-up unit of syringe pump, comprising:
Pressure test module, for the suffered pressure of injector push-rod of determining that syringe pump connects;
Pressure amplification module, for according to described pressure, utilizes enlargement factor conditioned circuit to amplify described pressure;
State determination module, for according to the pressure after amplifying, determines the use state that described syringe is current.
Preferably, described enlargement factor conditioned circuit comprises: have the first amplifying circuit of high-amplification-factor and have the second amplifying circuit of low enlargement factor; Described pressure amplification module, comprising:
The first amplifying unit, for when described pressure is during lower than default first threshold, enables described the first amplifying circuit described pressure is amplified;
The second amplifying unit, for when described pressure is during higher than default first threshold, enables described the second amplifying circuit described pressure is amplified.
Preferably, described state determination module, comprising:
The first status determining unit, in the time that described pressure after amplifying reaches the Second Threshold of low numerical value, determines that described injector push-rod installation is correct, and described syringe is in normal original state;
The second status determining unit, in the time that described pressure after amplifying reaches the 3rd threshold value of high numerical value, determines the line clogging that described syringe connects.
In the embodiment of the present invention, in the testing process of syringe, adopt enlargement factor conditioned circuit to amplify the pressure of the suffered difference size of injector push-rod, and then according to the pressure after amplifying, determine the use state that syringe is current.Due to by enlargement factor conditioned circuit, select the enlargement factor corresponding with this pressure, relevant pressure is reasonably amplified, the multiple that pressure is amplified is more accurate, thereby improves the precision and the reliability that detect.
Brief description of the drawings
Fig. 1 is the detection method embodiment schematic flow sheet of a syringe pump provided by the present invention;
Fig. 2 is a practical application scene schematic diagram provided by the present invention;
Fig. 3 is the structural representation of the pick-up unit embodiment of a syringe pump provided by the present invention.
Embodiment
In order to make those skilled in the art person understand better the technical scheme in the embodiment of the present invention, and the above-mentioned purpose of the embodiment of the present invention, feature and advantage can be become apparent more, below in conjunction with accompanying drawing, technical scheme in the embodiment of the present invention is described in further detail.
Whether the pick-up unit of syringe pump need to carry out two kinds of detections conventionally, that is: in the time that push rod is installed, detect push rod and install correctly, and whether signal piping stops up in the time of operation.In the time that whether detection push rod is correctly installed, at mounting of syringe push rod, and, when push rod geometrical clamp clamps syringe, because the push jack thickness of injector push-rod afterbody is generally between 1mm～3mm, the displacement of fixing spring distortion is very little, and the thrust that is subject to of cutting somebody's hair is less.In order to improve this compared with the induction of low thrust, pick-up unit enlargement factor when push rod installation and measuring should be larger.And in syringe pump operational process, the maximum thrust producing when line clogging is larger.Therefore pick-up unit enlargement factor when, signal piping stops up can be less.
Visible, a kind of pick-up unit with multiple enlargement factor is provided, when while making to install, whether correct push rod install detection and operation, the detection of line clogging is all comparatively accurate, improves precision and the reliability of pick-up unit, needs the problem of solution with regard to becoming those skilled in the art badly.
In order to address the above problem, for the invention provides a kind of detection method of syringe pump.
Referring to Fig. 1, be the detection method embodiment of a syringe pump provided by the invention, the method specifically comprises following execution flow process:
Step 101, determine syringe pump connect the suffered pressure of injector push-rod.
In this step, in testing process, need the suffered pressure of injector push-rod of first determining that syringe pump connects.
Step 102, according to described pressure, utilize enlargement factor conditioned circuit to amplify described pressure.
In the embodiment of the present invention, in order to adapt to the pressure of the suffered difference size of injector push-rod, the amplifying circuit that this pressure is amplified is set to enlargement factor conditioned circuit.Thereby, for different pressure, by enlargement factor conditioned circuit, select the enlargement factor corresponding with this pressure, relevant pressure is reasonably amplified.
Step 103, according to through amplification after pressure, determine the use state that described syringe is current.
After the suffered pressure of injector push-rod obtains the amplification of corresponding enlargement factor, user can accurately be known the actual pressure being subject to of push rod, and then, can, according to the pressure after amplifying, further determine the current use state of syringe.
In the embodiment of the present invention, in the testing process of syringe, adopt enlargement factor conditioned circuit to amplify the pressure of the suffered difference size of injector push-rod, and then according to the pressure after amplifying, determine the use state that syringe is current.Due to by enlargement factor conditioned circuit, select the enlargement factor corresponding with this pressure, relevant pressure is reasonably amplified, the multiple that pressure is amplified is more accurate, thereby improves the precision and the reliability that detect.
In specific implementation process, described enlargement factor conditioned circuit can comprise: have the first amplifying circuit of high-amplification-factor and have the second amplifying circuit of low enlargement factor, described the first amplifying circuit and the second amplifying circuit pressure value of corresponding different sizes respectively.
Particularly, the threshold value of enabling this first amplifying circuit or the second amplifying circuit can be set.In the embodiment of the present invention, this startup threshold value is called to " first threshold ".When described pressure is during lower than default first threshold, enable described the first amplifying circuit described pressure is amplified; When described pressure is during higher than default first threshold, enable described the second amplifying circuit described pressure is amplified.
After pressure is amplified, can, according to the pressure after amplifying, determine the use state that described syringe is current, be specially:
In the time that described pressure after amplifying reaches the Second Threshold of low numerical value, determine that described injector push-rod installation is correct, described syringe is in normal original state;
In the time that described pressure after amplifying reaches the 3rd threshold value of high numerical value, determine the line clogging that described syringe connects.
Fig. 2 is a practical application scene schematic diagram.Wherein, the pressure test module 201 of syringe pump connects microprocessor 202, microprocessor 202 is connected with enlargement factor conditioned circuit 203 again, the suffered pressure data of injector push-rod that microprocessor 202 connects according to the current syringe pump collecting, controls enlargement factor conditioned circuit 203 and enables the circuit part of different enlargement factors.In application, pressure that can enlargement factor conditioned circuit 203 amplifies and is set to two grades, and at pressure hour, the enlargement factor of enlargement factor conditioned circuit 203 is set to top grade (such as enlargement factor is 800 times); In the time that pressure is larger, the enlargement factor of enlargement factor conditioned circuit 203 is set to low grade (such as enlargement factor is 200 times).When 203 initial start-up of enlargement factor conditioned circuit, system enlargement factor can be defaulted as top grade, when force value is during higher than default first threshold, then enlargement factor is adjusted to low grade.
The detection method of corresponding above-mentioned syringe pump, the present invention also provides a kind of pick-up unit of syringe pump.As shown in Figure 3, be the pick-up unit embodiment of a syringe pump, this pick-up unit specifically can comprise:
Pressure test module 301, for the suffered pressure of injector push-rod of determining that syringe pump connects;
Pressure amplification module 302, for according to described pressure, utilizes enlargement factor conditioned circuit to amplify described pressure;
State determination module 303, for according to the pressure after amplifying, determines the use state that described syringe is current.
In the embodiment of the present invention, in the testing process of syringe, adopt enlargement factor conditioned circuit to amplify the pressure of the suffered difference size of injector push-rod, and then according to the pressure after amplifying, determine the use state that syringe is current.Due to by enlargement factor conditioned circuit, select the enlargement factor corresponding with this pressure, relevant pressure is reasonably amplified, the multiple that pressure is amplified is more accurate, thereby improves the precision and the reliability that detect.
Particularly, described enlargement factor conditioned circuit can comprise: have the first amplifying circuit of high-amplification-factor and have the second amplifying circuit of low enlargement factor, described the first amplifying circuit and the second amplifying circuit pressure value of corresponding different sizes respectively.
In a preferred embodiment, described pressure amplification module, can comprise:
The first amplifying unit, for when described pressure is during lower than default first threshold, enables described the first amplifying circuit described pressure is amplified;
The second amplifying unit, for when described pressure is during higher than default first threshold, enables described the second amplifying circuit described pressure is amplified.
In a preferred embodiment, described state determination module, can comprise:
The first status determining unit, in the time that described pressure after amplifying reaches the Second Threshold of low numerical value, determines that described injector push-rod installation is correct, and described syringe is in normal original state;
The second status determining unit, in the time that described pressure after amplifying reaches the 3rd threshold value of high numerical value, determines the line clogging that described syringe connects.
Detection method to a kind of syringe pump provided by the present invention and device are described in detail above.Applied specific case herein principle of the present invention and embodiment are set forth, the explanation of above embodiment is just for helping to understand method of the present invention and core concept thereof.It should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention, can also carry out some improvement and modification to the present invention, these improvement and modification also fall in the protection domain of the claims in the present invention.
Claims (6)
1. a detection method for syringe pump, is characterized in that, comprising:
Determine the suffered pressure of injector push-rod that syringe pump connects;
According to described pressure, utilize enlargement factor conditioned circuit to amplify described pressure;
According to the pressure after amplifying, determine the use state that described syringe is current.
2. method according to claim 1, is characterized in that, described enlargement factor conditioned circuit comprises: have the first amplifying circuit of high-amplification-factor and have the second amplifying circuit of low enlargement factor; According to described pressure, utilize enlargement factor conditioned circuit to amplify described pressure, comprising:
When described pressure is during lower than default first threshold, enable described the first amplifying circuit described pressure is amplified;
When described pressure is during higher than default first threshold, enable described the second amplifying circuit described pressure is amplified.
3. method according to claim 1 and 2, is characterized in that, according to the pressure after amplifying, determines the use state that described syringe is current, comprising:
In the time that described pressure after amplifying reaches the Second Threshold of low numerical value, determine that described injector push-rod installation is correct, described syringe is in normal original state;
In the time that described pressure after amplifying reaches the 3rd threshold value of high numerical value, determine the line clogging that described syringe connects.
4. a pick-up unit for syringe pump, is characterized in that, comprising:
Pressure test module, the suffered pressure of injector push-rod connecting for test injection pump;
Pressure amplification module, for according to described pressure, utilizes enlargement factor conditioned circuit to amplify described pressure;
State determination module, for according to the pressure after amplifying, determines the use state that described syringe is current.
5. device according to claim 4, is characterized in that, described enlargement factor conditioned circuit comprises: have the first amplifying circuit of high-amplification-factor and have the second amplifying circuit of low enlargement factor; Described pressure amplification module, comprising:
The first amplifying unit, for when described pressure is during lower than default first threshold, enables described the first amplifying circuit described pressure is amplified;
The second amplifying unit, for when described pressure is during higher than default first threshold, enables described the second amplifying circuit described pressure is amplified.
6. according to the device described in claim 4 or 5, it is characterized in that, described state determination module, comprising:
The first status determining unit, in the time that described pressure after amplifying reaches the Second Threshold of low numerical value, determines that described injector push-rod installation is correct, and described syringe is in normal original state;
The second status determining unit, in the time that described pressure after amplifying reaches the 3rd threshold value of high numerical value, determines the line clogging that described syringe connects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410056382.XA CN103969696A (en) | 2014-02-19 | 2014-02-19 | Injection pump detecting method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410056382.XA CN103969696A (en) | 2014-02-19 | 2014-02-19 | Injection pump detecting method and device |
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| Publication Number | Publication Date |
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| CN103969696A true CN103969696A (en) | 2014-08-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410056382.XA Pending CN103969696A (en) | 2014-02-19 | 2014-02-19 | Injection pump detecting method and device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111432716A (en) * | 2017-12-07 | 2020-07-17 | 豪夫迈·罗氏有限公司 | Verification instrument for verification force testing machine, method for verification force testing machine and method for measuring force |
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Cited By (2)
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