CN102371012B - Method for detecting liquid drops in drip cup of infusion apparatus - Google Patents
Method for detecting liquid drops in drip cup of infusion apparatus Download PDFInfo
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- CN102371012B CN102371012B CN2010102480683A CN201010248068A CN102371012B CN 102371012 B CN102371012 B CN 102371012B CN 2010102480683 A CN2010102480683 A CN 2010102480683A CN 201010248068 A CN201010248068 A CN 201010248068A CN 102371012 B CN102371012 B CN 102371012B
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Abstract
The invention relates to a method for detecting liquid drops in a drip cup of an infusion apparatus, which can be used for eliminating false liquid drops signals on a photoelectric detection mechanism caused by external factors and correctly identifying liquid drops signals in the drip cup of the infusion apparatus. In the method, a plurality of light emitting tubes and light receiving tubes are arranged vertically to the drip cup, a group of time sequence signals with vertical liquid drop dripping characteristic is formed by continuously receiving light intensity change signals, and true and false liquid drops signals are distinguished by analyzing the time sequence of the group of signals.
Description
Technical field
The present invention relates to a kind of method that transfusion device drips drop in the kettle of surveying, the infusion monitor that is used for to patient infusion of more specifically saying so is surveyed the method that transfusion device drips drop in the kettle, belongs to the medical apparatus technical field.
Background technology
Existing titration formula transfusion device can be through surveying the interval that drop passes through, quantity and total amount, the speed of monitoring transfusion and amount of infusion, and and then control transfusion speed and total amount through feedback mechanism, thereby reach medical treatment or chemico-analytic purpose.General drop detection method is in a side of dripping kettle one or more luminous tubes to be set, and at opposite side one or more receiving tubes is set.When passing light, drop can form intensity variations at the receiving tube place.This light intensity changes the signal that is defined as a drop drippage after treatment.Some application can be used a plurality of pipes that transmit and receive, but all is that series connection is used, and just transmits and receives the zone in order to enlarge, and looks the effect of a same transmitter unit and a receiving element.
Use usually can the having problems in actual use of general infusion set of this detection drop method, for example the factor of some non-drop also can produce light intensity and changes at the light receiving tube place, thereby produces false drop signal, and particular problem has:
1. the light intensity of bias light changes, and being received pipe, to receive that erroneous judgement reads be the drop signal;
2. drip that the light intensity that also can cause receiving tube to receive of rocking of liquid changes in the kettle, thereby to be read by erroneous judgement be the drop signal.
3. hang over the drop at drip place, it rocks and also can cause the light intensity that receiving tube receives to change, thereby to be read by erroneous judgement be the drop signal
Existing patent application CN200920032705.6, name is called automatic control system for intravenous drip, and it discloses a kind of method that real drop causes inherent many drops signal of getting rid of.The drippage of a real drop can produce at least 2 signals from this detection mode of light emission-reception, and twice light intensity that promptly drop gets into and drop leaves changes (2 signals).This patent is through giving the receive delay (one section interval that does not receive signal) of a certain hour after receiving first signal, get rid of the problem of a plurality of spurious signals that the drippage process causes.This patent can not be discerned the for example light variation of non-drop factor, the spurious signal that the interior slosh of a kettle etc. causes.
Summary of the invention
For separating for example light variation of drop factor by no means, the interior slosh of a kettle etc. causes the problem of spurious signal, and the present invention discloses a kind of method that transfusion device drips drop in the kettle of surveying.This method mainly is to transmit and receive pipe through vertical direction arranged array formula drop, obtains the signal of one group of vertical direction.Through analyzing the time sequencing of this group signal, the drop signal method distinguishes truth from false.And confirm that the signal that has only following receiving tube to receive is later than the signal that top receiving tube receives, it is that a drop causes that this group signal is just confirmed as, and interpretation is that a real drop drippage has taken place.
The method that the detection transfusion device drips drop in the kettle specifically comprises: the side dripping kettle is provided with light-emitting tube; At opposite side light receiving tube is set; Form intensity variations when utilizing drop to pass light at the receiving tube place; Become the signal of drop drippage after treatment, it is characterized in that: arrange a plurality of light-emitting tubes and receiving tube dripping a kettle vertical direction, the light intensity variable signal through continuous reception forms one group of clock signal that has drop vertical direction drippage characteristic; Through analyzing the time sequencing of this group signal, the drop signal distinguishes truth from false.
Can arrange single-column type light-emitting tube and receiving tube through vertical direction, obtain the clock signal of one group of drop vertical direction drippage,, differentiate false drop signal, differentiate real drop signal through analyzing the time sequencing of this group signal.
The variation of receiving tube received signal during recorder is single-row; Form one group along time shaft and become close clock signal gradually; Carry out Time-Series analysis; Having only at least that certain two receiving layer receives signal, and be later than the signal time on upper strata on the signal time of lower floor, could interpretation be that a real drop drippage is arranged.
Also can pass through vertical direction arranged array formula light emission and receiving tube, obtain the signal of many group vertical direction,, differentiate false drop signal, differentiate real drop signal through analyzing the time sequencing of these many group signals.As making up emission array through A * B light-emitting tube of use, to produce the launching effect of approximate directional light, it is capable that vertical direction is arranged A, and A is more than or equal to 2, and horizontal direction is arranged B and is listed as, and B is more than or equal to 1; Through using M * N light receiving tube to make up receiving array, to receive the emission array intensity variations, it is capable that vertical direction is arranged M, and M is more than or equal to 2, and horizontal direction is arranged the N row, and N is more than or equal to 1.
The variation of every capable receiving tube received signal in the recorder array; Form many groups along time shaft and become close signal gradually; Having only at least that certain two receiving layer receives signal, and be later than the signal time on upper strata on the signal time of lower floor, could interpretation be that a real drop drippage is arranged.
Arrange the array that transmits and receives of correlation respectively in the burette both sides, the light of light-emitting tube emission possibly be infrared ray, near-infrared, visible or black light.
Principle of the present invention is:
When drop drips from top to bottom; The variation of every capable receiving tube received signal in the receiving array; Because acceleration of gravity can form one group along time shaft and become close signal gradually, through analyzing the time sequencing of this group signal on the vertical direction; Differentiate real drop signal, tell the signal that non-drop factor causes in other words.
The invention discloses the following time sequencing analysis of passing through to the signal of a group of received array:
1. having only at least that certain two receiving layer receives signal, and be later than the signal time on upper strata on the signal time of lower floor, could interpretation be that a real drop drippage is arranged;
2. when the receiving array signal was gone more than 2, the signal sequence of encrypting gradually was the characteristic of more perfect real drop signal of drop drippage.
3. receive the signal that non-drop factor causes at receiving array, the drop drippage is arranged again simultaneously, received correct clock signal, also can utilize the method for software,, detect drop, prevent omission through Time-Series analysis as long as have greater than 2 row arrays.
4. receiving array several the passing through that be in the bottom often received interference, possibly be that the bottom liquid level gets into detecting area and causes, and can get rid of.
5. if the individual receiving layer of certain two (several) receives signal simultaneously, then this signal will not counted effective drop signal, because this signal possibly change the reception signal that causes for light;
6. if the individual receiving layer of certain two (several) receives signal, but the signal time of lower floor is early than the upper strata, and then this signal of 2 layers is not counted effective drop signal, and this signal possibly rock the reception signal that causes for dripping in the kettle liquid level.
7. if having only a layer to receive signal, then this signal is an invalid signals by interpretation also, causes because this signal possibly rock for the drop that is suspended on the drip place;
Description of drawings
The sketch map of Fig. 1 vertical direction arranged array formula light emission and receiving tube
The accurate micro-infusion monitor system block diagram of Fig. 2
The signal of receiving when the real drop of Fig. 3 passes 6 row receiving tubes
The signal of receiving during 6 row receiving tubes when Fig. 4 environmental light intensity changes
The specific embodiment
The method that the detection transfusion device drips drop in the kettle specifically comprises: the side dripping kettle is provided with light-emitting tube; At opposite side light receiving tube is set; Form intensity variations when utilizing drop to pass light at the receiving tube place; Become the signal of drop drippage after treatment, it is characterized in that: arrange a plurality of light-emitting tubes and receiving tube dripping a kettle vertical direction, the light intensity variable signal through continuous reception forms one group of clock signal that has drop vertical direction drippage characteristic; Through analyzing the time sequencing of this group signal, the drop signal distinguishes truth from false.
As shown in Figure 1: as to transmit and receive pipe and dripping the array that transmits and receives that the kettle both sides arrange respectively.Through using A * B light-emitting tube to make up emission array, to produce the launching effect of approximate directional light, it is capable that vertical direction is arranged A, and A is more than or equal to 2, and horizontal direction is arranged the B row, and B is more than or equal to 1; Through using M * N light receiving tube to make up receiving array, to receive the emission array intensity variations, it is capable that vertical direction is arranged M, and M is more than or equal to 2, and horizontal direction is arranged the N row, and N is more than or equal to 1.
Signals collecting is to form one group of vertical direction signal; The signals collecting of every row can be the signal stack like N the receiving tube of Fig. 1; Maximum; Minima or a certain algorithm, signals collecting will form at interval the vertical direction arrangement signal graph, this group is at the free coordinate of vertical direction.
The clock signal that collects such as Fig. 3, shown in Figure 4:
Fig. 3 shows is the signal that a real drop is received when passing 6 row receiving tubes of vertical direction, can observe following receiving tube and be later than top receiving tube and receive signal, thereby confirm that this is one group of signal that real drop forms.
The signal that Fig. 4 shows receives when being 6 row receiving tubes of environmental light intensity vertical direction when changing can be observed all receiving tubes and receive signal simultaneously, and this is not the signal (sets of signals of not free order) that real drop causes.
The time sequencing of the signal through the vertical direction every capable receiving tube of analytic signal acquisition time in is at interval differentiated certain group signal and is the false drop signal that signal that a real drop causes or extraneous other factors cause.
● when drop dripped from top to bottom, every capable receiving tube received signal in the receiving array was because acceleration of gravity can form one group along time shaft and become close signal gradually.
● through analyzing the time sequencing of this group signal on the vertical direction, differentiate real drop signal, tell the signal that non-drop factor causes in other words.
Below to the time sequencing analytical method of the signal of a group of received array for example:
Having only at least that certain two receiving layer receives signal, and be later than the signal time on upper strata on the signal time of lower floor, could interpretation be that a real drop drippage is arranged;
When the receiving array signal was gone more than 2, the signal sequence of encrypting gradually was the characteristic of more perfect real drop signal of drop drippage.
Receive the signal that non-drop factor causes at receiving array, the drop drippage is arranged again simultaneously, received correct clock signal, also can utilize the method for software,, detect drop, prevent omission through Time-Series analysis as long as have greater than 2 row arrays.
Several the passing through that receiving array is in the bottom often received interference, possibly be that bottom liquid level entering detecting area causes, and can get rid of.
If the individual receiving layer of certain two (several) receives signal simultaneously, then this signal will not counted effective drop signal, because this signal possibly change the reception signal that causes for light;
If the individual receiving layer of certain two (several) receives signal, but the signal time of lower floor is early than the upper strata, and then this signal of 2 layers is not counted effective drop signal, and this signal possibly rock the reception signal that causes for dripping in the kettle liquid level.
If have only a layer to receive signal, then this signal is an invalid signals by interpretation also, causes because this signal possibly rock for the drop that is suspended on the drip place.
Application example:
The drop detection method that transfusion device of the present invention drips in the kettle can be widely used in infusion pump or transfusion controller, and it is that the inventor is vulnerable to external interference formation spurious signal clinically and studies invention at the accurate micro-infusion monitor product of solution.
Accurate micro-infusion monitor system block diagram is as shown in Figure 2, comprising: kettle, processor, monitor, micro machine, control circuit, light-emitting tube and receiving tube etc. are dripped in transfusion, and light source can be an infrared light, near infrared light, visible light etc.
The operation principle of accurate micro-infusion monitor is to obtain transfusion speed (for example: X drips/minute) through the interval of surveying drop; Drip speed ratio with setting; And send control signal to motor-driven hold down gag; Regulate the tightness of compressing tube for transfusion, set the purpose of dripping speed thereby reach.
The present invention discloses a kind of method that transfusion device drips drop in the kettle of surveying, and transmits and receives pipe through vertical direction arranged array formula drop, obtains the signal of one group of vertical direction, and through analyzing the time sequencing of this group signal, the drop signal distinguishes truth from false.And confirm that the signal that has only following receiving tube to receive is later than the signal that top receiving tube receives, it is that a drop causes that this group signal is just confirmed as, and interpretation is that a real drop drippage has taken place.
Detection method of the present invention has precision height, advantage such as reliable, can be widely used in the infusion monitor to patient infusion.Easy for operation reliable, the real-time infusion monitoring overall process of ability is also sent warning, and is with low cost, is convenient to install and use in a large number, effectively improves nurse job efficient, reduces workload, improves the transfusion safety.
Claims (7)
1. survey the method that transfusion device drips drop in the kettle for one kind; Comprise: the side dripping kettle is provided with light-emitting tube; At opposite side light receiving tube is set, forms intensity variations at the receiving tube place when utilizing drop to pass light, become the signal of drop drippage after treatment; It is characterized in that: arrange a plurality of light-emitting tubes and receiving tube in a kettle vertical direction; Light intensity variable signal through continuous reception forms one group of clock signal that has drop vertical direction drippage characteristic, and through analyzing the time sequencing of this group signal, the drop signal distinguishes truth from false.
2. a kind of method that transfusion device drips drop in the kettle of surveying as claimed in claim 1; It is characterized in that: arrange single-column type light-emitting tube and receiving tube through vertical direction; Obtain the clock signal of one group of drop vertical direction drippage; Through analyzing the time sequencing of this group signal, differentiate false drop signal, differentiate real drop signal.
3. a kind of method that transfusion device drips drop in the kettle of surveying as claimed in claim 2; It is characterized in that: the variation of receiving tube received signal during recorder is single-row; Form one group along time shaft and become close clock signal gradually, carry out Time-Series analysis, having only at least, certain two receiving layer receives signal; And being later than the signal time on upper strata on the signal time of lower floor, could interpretation be that a real drop drippage is arranged.
4. a kind of method that transfusion device drips drop in the kettle of surveying as claimed in claim 1; It is characterized in that: through vertical direction arranged array formula light emission and receiving tube; Obtain the signal of many group vertical direction; Through analyzing the time sequencing of these many group signals, differentiate false drop signal, differentiate real drop signal.
5. a kind of method that transfusion device drips drop in the kettle of surveying as claimed in claim 4 is characterized in that: make up emission array through using A * B light-emitting tube, to produce the launching effect of approximate directional light; It is capable that vertical direction is arranged A; A is more than or equal to 2, and horizontal direction is arranged the B row, and B is more than or equal to 1; Through using M * N light receiving tube to make up receiving array, to receive the emission array intensity variations, it is capable that vertical direction is arranged M, and M is more than or equal to 2, and horizontal direction is arranged the N row, and N is more than or equal to 1.
6. a kind of method that transfusion device drips drop in the kettle of surveying as claimed in claim 4; It is characterized in that: the variation of every capable receiving tube received signal in the recorder array; Form many groups along time shaft and become close signal gradually; Having only at least that certain two receiving layer receives signal, and be later than the signal time on upper strata on the signal time of lower floor, could interpretation be that a real drop drippage is arranged.
7. a kind of method that transfusion device drips drop in the kettle of surveying as claimed in claim 1, it is characterized in that: the light of light-emitting tube emission can be visible light or black light.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010102480683A CN102371012B (en) | 2010-08-09 | 2010-08-09 | Method for detecting liquid drops in drip cup of infusion apparatus |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010102480683A CN102371012B (en) | 2010-08-09 | 2010-08-09 | Method for detecting liquid drops in drip cup of infusion apparatus |
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| CN102371012A CN102371012A (en) | 2012-03-14 |
| CN102371012B true CN102371012B (en) | 2012-10-31 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104606740B (en) * | 2014-06-13 | 2017-10-27 | 杭州法瑞尔科技有限公司 | A kind of gravity transfusion system high anti-interference drop detection structure and method |
| CN104656160B (en) * | 2015-01-28 | 2017-07-07 | 广州视源电子科技股份有限公司 | For the infusion test device and method of drop identification |
| CN110743063B (en) * | 2017-12-14 | 2021-06-08 | 南通大学 | Infusion nursing device adopting infusion liquid level lower limit judgment and measurement algorithm |
| CN111228608A (en) * | 2020-01-09 | 2020-06-05 | 吉林省挺好滴信息技术有限责任公司 | Infrared reflection type liquid dripping speed detector |
| KR102359375B1 (en) * | 2021-06-21 | 2022-02-08 | (주)신성테크 | Fluid monitoring device, method and system |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2698364Y (en) * | 2004-04-29 | 2005-05-11 | 彭顺银 | Hanging type automatic alarm device capable of displaying infusion dripping speed |
| CN2920261Y (en) * | 2005-07-28 | 2007-07-11 | 梁佐民 | Transfusion monitoring unit |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US9125979B2 (en) * | 2007-10-25 | 2015-09-08 | Proteus Digital Health, Inc. | Fluid transfer port information system |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2698364Y (en) * | 2004-04-29 | 2005-05-11 | 彭顺银 | Hanging type automatic alarm device capable of displaying infusion dripping speed |
| CN2920261Y (en) * | 2005-07-28 | 2007-07-11 | 梁佐民 | Transfusion monitoring unit |
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