CN107296998A - A kind of utilization photoelectric detecting technology detects the device of infusion bottle liquid level - Google Patents
A kind of utilization photoelectric detecting technology detects the device of infusion bottle liquid level Download PDFInfo
- Publication number
- CN107296998A CN107296998A CN201710387499.XA CN201710387499A CN107296998A CN 107296998 A CN107296998 A CN 107296998A CN 201710387499 A CN201710387499 A CN 201710387499A CN 107296998 A CN107296998 A CN 107296998A
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- China
- Prior art keywords
- liquid level
- infusion bottle
- module
- warning line
- beam signal
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Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
- A61M5/168—Means for controlling media flow to the body or for metering media to the body, e.g. drip meters, counters ; Monitoring media flow to the body
- A61M5/16831—Monitoring, detecting, signalling or eliminating infusion flow anomalies
- A61M5/1684—Monitoring, detecting, signalling or eliminating infusion flow anomalies by detecting the amount of infusate remaining, e.g. signalling end of infusion
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M2205/00—General characteristics of the apparatus
- A61M2205/18—General characteristics of the apparatus with alarm
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- Health & Medical Sciences (AREA)
- Vascular Medicine (AREA)
- Engineering & Computer Science (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Hematology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The invention provides the device that a kind of utilization photoelectric detecting technology detects infusion bottle liquid level, including：At the warning line of infusion bottle side, the laser emitting module for launching light beam；At the warning line of infusion bottle opposite side, the laser pick-off module for receiving the light beam；The beam signal received for the beam signal for launching laser emitting module with laser pick-off module is analyzed, and judges whether liquid level reaches the controller of warning line；For when liquid level reaches warning line, sending the alarm of alarm.When liquid level reaches warning line, the light path originally set in advance is due to the change of infusion bottle liquid level, the refractive direction of light changes therewith so that the laser pick-off module fixed can not now be received entirely the beam signal that laser emitting module is sent, and now send alarm.Device volume that the present invention is provided is small, cost is low, simple for structure, easy to operate, can monitoring transfusion bottle liquid level in real time change, measurement result accurate stable.
Description
Technical field
The present invention relates to a kind of infusion bottle liquid level detection device, belong to medical communication technical field.
Background technology
With the rapid development of economy, the living standard of the people is greatly improved, then people pay attention to all the more
The effect of health care, promotes the demand of hospital and personal, family to Medical Devices, especially to intelligentized Medical Devices
Demand cumulative year after year.In order that medical product is enriched constantly, the function of product is more and more, and quality is become better and better, and the country is thrown
The enterprise for entering to study medical device industry is on the increase.
For the detection of infusion bottle liquid level, have been put at present in the instrument used or equipment, most of design principle is all
Sensed by gravity.With the development and the lifting of medical level in epoch, medicine equipment is also evolving, and transfusion is used
Vial also gradually change lighter and handier plastic bottle into.Therefore, it is necessary to develop more efficient, reliable level sensing side
Method.
At present, there are following two method of testings when detecting liquid level：
First, when liquid level is measured, the weight of liquid in infusion bottle is measured indirectly using pulling force sensor.Will
Pulling force sensor is connected between pulley and liquid storage bottle, and the linear relationship changed using liquid level between tension variations is entered in the ranks
Connect measurement.
2nd, ultrasonic measurement liquid level is utilized.Using ultrasonic wave, spread speed is different in different material, different densities
Principle, detect that ultrasonic wave passes through the structure of material by detecting the echo time after ultrasonic wave transmitting, it is fixed using single-chip microcomputer
When control the transmitting of ultrasonic wave, receive the echo that detects using interrupting, the then data processing through single-chip microcomputer obtains echo
Time parameter.In such system, can measured in advance liquid level reach warning line when echo time, then by each measurement result
It is compared with this, just can knows whether to reach warning liquid level.
There is following defect in above-mentioned existing method：
1st, detect that the equipment volume and mechanism of liquid level are excessive using gravity, and have direct relation with the weight of liquid, still
It is indirect relation in itself with liquid level, underaction, while also bringing along certain error, causes unnecessary in actual use
Trouble.
2nd, liquid level is measured using pulling force sensor, pulling force sensor price considers from point of view of practicability, in real system
In do not apply to.
3rd, it is relatively accurate using the detection of ultrasonic wave, it is a kind of conventional detection method.But ultrasonic listening can not be kept away
Some blind areas of the presence exempted from, the size of blind area is related with corresponding single-chip microcomputer processing speed.In the occasion higher to required precision,
Also need to add temperature compensation module and corresponding software algorithm to improve supersonic sounding with the change produced by the change of environment temperature
Change.The measurement accuracy of complexity and requirement in view of soft and hardware, and there is the table of liquid when detecting the liquid level of infusion bottle
Face is fluctuated, and larger error can be produced using ultrasonic sensor detection liquid level, while ultrasonic sensor installation position is really
Surely it is also a great problem.
The content of the invention
The technical problem to be solved in the present invention is to provide a kind of small volume, cost is low, testing result is accurate, measurement accuracy is high
And the good infusion bottle liquid level detection device of stability.
In order to solve the above-mentioned technical problem, the technical scheme is that providing a kind of defeated using photoelectric detecting technology detection
The device of liquid bottle liquid level, it is characterised in that：Including
At the warning line of infusion bottle side, the laser emitting module for launching light beam；
At the warning line of infusion bottle opposite side, the laser pick-off module for receiving the light beam；
The beam signal received for the beam signal for launching laser emitting module with laser pick-off module is contrasted
Analysis, judges whether liquid level reaches the controller of warning line；
For when liquid level reaches warning line, sending the alarm of alarm.
Preferably, the controller connection laser emitting module, laser pick-off module and alarm.
Preferably, when starting transfusion, below the liquid level of infusion bottle, laser emitting module sends beam signal, the light beam
Signal is finally received, shape by the refraction of liquid and infusion bottle opposite side wall in infusion bottle side wall, bottle by laser pick-off module
Into a stable light path；
When the liquid level of infusion bottle does not arrive warning line, laser pick-off module can be periodically received the light beam letter
Number；
When the liquid level of infusion bottle is reached or during less than warning line, the light path set in advance originally is due to the change of infusion bottle liquid level
Change, the refractive direction of light changes therewith so that the laser pick-off module fixed can not now be received entirely described
Beam signal, now controller driving alarm produces alarm signal.
Preferably, the light beam that the controller receives the beam signal that laser emitting module is launched with laser pick-off module
Signal is analyzed；When the beam signal of transmitting is identical with the beam signal received, that is, represent that liquid level is normal；And work as and connect
When the beam signal received is different with the beam signal of transmitting, then it represents that liquid level occurs in that exception, warning line is reached.
Preferably, the controller uses single-chip microcomputer.
Preferably, in detection process, the situation rocked and waved of infusion bottle, this shakiness inevitably occurs
Surely it can to produce false-alarm when liquid level is close to warning line, this interference is overcome by the following method：When the light beam letter received
Number with transmitting beam signal it is different when, delay setting time judged at least one times again, if the beam signal received with
The beam signal of transmitting is still different, illustrates that liquid level reaches warning line.
Preferably, the controller is also connected with clock circuit.
Preferably, the time of delay is controlled by clock circuit.
Preferably, the controller is also connected with reset circuit and key control module.
Preferably, after one-time detection terminates, control module is pushed button, controller driving reset circuit work, system is returned
To original state, detection work next time is waited.
Compared with prior art, the present invention has the advantages that：
1st, the liquid level of infusion bottle is detected using optical detection technique, the transmission characteristic of light is made full use of, to liquid level
Change can quickly produce sensing, therefore, it is possible to the liquid level for detecting infusion bottle promptly and accurately.
2. by the use of single-chip microcomputer as the core of liquid level detection system, single-chip microcomputer makes as Intelligent Measurement and the center of control
The judgement of system and control more accurate, and that whole system can also be done is compacter, be easy to installation at the scene and
Use.
3. due to having the intelligent computing and control of single-chip microcomputer, take multiple the anti-interference of comprehensive descision of delay to arrange on software
Apply, it is to avoid maloperation and the generation of false alarm, while it also avoid the possibility of false dismissal, it is ensured that the stability of system.
To sum up, the device that the present invention is provided measures the liquid level of infusion bottle using photoelectric detecting technology, combines single-chip microcomputer
Light signal detection system has small volume, sensitivity height, strong antijamming capability, is easy to setting, the characteristics of error is small, whole system
It is simple for structure, it is easy to operate.The present apparatus can in real time monitoring transfusion bottle liquid level change, when liquid level reach warning line when can and
When accurately produce alarm signal, reduce the labor intensity of medical personnel, be effectively improved care quality.The present apparatus except
Applied in terms of transfusion, the level sensing in some other field can be equally applicable, with good production promotional value.
Brief description of the drawings
Fig. 1 is the apparatus system block diagram that infusion bottle liquid level is detected using photoelectric detecting technology；
Fig. 2 is the principle schematic that light detects infusion bottle liquid level；
Fig. 3 is jamproof algorithm flow chart.
Embodiment
With reference to specific embodiment, the present invention is expanded on further.It should be understood that these embodiments are merely to illustrate the present invention
Rather than limitation the scope of the present invention.In addition, it is to be understood that after the content of the invention lectured has been read, people in the art
Member can make various changes or modifications to the present invention, and these equivalent form of values equally fall within the application appended claims and limited
Scope.
The invention provides the device that a kind of utilization photoelectric detecting technology detects infusion bottle liquid level, examined by reliable liquid level
Survey to meet in present clinical medicine the need for monitoring infusion.In hardware design, laser sensor technology is taken full advantage of, is tied
Application and some interference removing measures of single-chip microcomputer are closed, interference free performance is greatly improved.System is due to using intelligent light
Detection technique, makes volume smallerization of system, is easily installed and uses.
With reference to Fig. 1, detect that the device of infusion bottle liquid level includes single-chip microcomputer, single-chip microcomputer connection laser using photoelectric detecting technology
Transmitter module, laser pick-off module, alarm module, clock circuit, reset circuit and key control module.
Laser pick-off module uses phototriode receiving module.
Alarm module uses buzzer.
Detect that the operation principle of the device of infusion bottle liquid level is as follows using photoelectric detecting technology：
First, the liquid level of infusion bottle is detected using the light beam of laser.
In the present embodiment, be to the detection of infusion bottle liquid level the refraction orientation for changing the time to liquid level using light beam it is different come
Realize.With reference to Fig. 2, in specific implementation, presetting needs the liquid level of early warning, fixes the position of transmitting and the reception of light beam
Put, at the warning line for laser emitting module A being fixed on infusion bottle P, laser pick-off module B is fixed on the warning of infusion bottle opposite side
The vicinity of line.
When starting transfusion, in below the liquid level Y of infusion bottle, laser emitting module sends beam signal, beam signal warp
Cross infusion bottle side wall, in bottle liquid and infusion bottle opposite side wall refraction, finally received by laser pick-off module, form one
Stable light path G；
When the liquid level of infusion bottle does not arrive warning line, laser pick-off module can be periodically received the light beam letter
Number, represent it is not necessary to alarm；
When the liquid level of infusion bottle is when reaching or less than warning line, the light path set in advance originally is due to infusion bottle liquid level
Change, the refractive direction of light changes therewith so that the laser pick-off module fixed can not now be received entirely institute
Beam signal is stated, now controller produces alarm signal, informs that the liquid level of caregiver's infusion bottle has arrived warning line.
Straightline propagation and the refraction principle of light using light, measure liquid level using Laser emission and receiver, can disappear
Except the interference of bias light.Further, since system uses the technology detected to optical signal, when using laser emitting module
During as photocell, light beam is narrow, and the change to liquid level is more sensitive, and early warning letter can be accurately sent to liquid level
Number.When the level sensing applied to infusion bottle, jamproof effect is served in this short-range detection scene, is improved
To the reliability of level sensing.
2nd, the processing of intelligence is carried out to light detecting signal using single-chip microcomputer.
Realize the detection to optical signal, it is desirable to have to light transmitting and the circuit received, it is necessary to transmitting and the light received
Signal carries out certain processing.In the present embodiment, 51 single-chip microcomputers are used as the core of system.
Calculating and disposal ability using 51 single-chip microcomputers, control the laser beam of transmitting and the reception signal of receiving device to enter
Row is compared.Represent that liquid level is normal when the signal of transmitting is identical with the signal received, and when the signal and transmitting received
When signal is different, then it represents that liquid level occurs in that exception.
Because the liquid of infusion bottle may be considered uniformly, its refracting characteristic to light is consistent (do not handle here
Lighttight liquid).Therefore, after the optical signal exception that light receiving element is received, pre-warning signal is just sent by single-chip microcomputer, can
To be the alarm signal of acousto-optic, medical personnel are notified to come to handle.
51 single-chip microcomputers are highly developed and stable products so that the reliability of the present apparatus is guaranteed.Using monolithic
Machine controls whole circuit as the core of system, and by the reception and processing to optical signal, can be promptly and accurately judge is defeated
Whether the liquid level of liquid bottle reaches warning line.Due to using the design of Intelligent light detection, therefore the hardware that system is used can
With less, allow the volume of whole detecting system smaller, lighter, be easy to whole system installation in actual applications and make
With.
3rd, the antijamming capability of system is improved using the Intelligent treatment of single-chip microcomputer.
During being detected using optical signal to the liquid level of infusion bottle, although device being fixed on well can be made defeated
On liquid bottle, but the situation rocked and waved of infusion bottle inevitably occurs in use.Now, in infusion bottle
Liquid level can produce disturbance and change, and this unstable meeting to produce false-alarm when liquid level is close to warning line.
In order to overcome the influence that this interference comes to detection band, the optical signal during light detecting signal to receiving
Multiple comprehensive descision is carried out, that is, detects when liquid level reaches warning line and slightly postpones a period of time again, such as 2 seconds, carry out two to three
Secondary judgement, can thus remove interference, it is ensured that can obtain liquid level exactly to the information of limit, enable the detection of system
It is more sane reliable.
Sane processing and judgement is carried out to the optical signal collected from the software aspects of system, so as to further improve
The interference free performance of system, it is possible to reduce judge by accident and avoided alert the problem of do not report, make system to the reliability of level sensing
It is guaranteed.
The time of delay passes through clock circuit control.
After one-time detection terminates, control module is pushed button, controller driving reset circuit work, system returns to initial shape
State, waits detection work next time.
Claims (10)
1. a kind of utilization photoelectric detecting technology detects the device of infusion bottle liquid level, it is characterised in that including
At the warning line of infusion bottle side, the laser emitting module for launching light beam；
At the warning line of infusion bottle opposite side, the laser pick-off module for receiving the light beam；
The beam signal received for the beam signal for launching laser emitting module with laser pick-off module is analyzed,
Judge whether liquid level reaches the controller of warning line；
For when liquid level reaches warning line, sending the alarm of alarm.
2. a kind of utilization photoelectric detecting technology as claimed in claim 1 detects the device of infusion bottle liquid level, it is characterised in that：Institute
State controller connection laser emitting module, laser pick-off module and alarm.
3. a kind of utilization photoelectric detecting technology as claimed in claim 1 detects the device of infusion bottle liquid level, it is characterised in that：Open
When beginning to infuse, below the liquid level of infusion bottle, laser emitting module sends beam signal, and the beam signal passes through infusion bottle side
The refraction of liquid and infusion bottle opposite side wall, is finally received by laser pick-off module in wall, bottle, forms a stable light path；
When the liquid level of infusion bottle does not arrive warning line, laser pick-off module can be periodically received the beam signal；
When the liquid level of infusion bottle is reached or during less than warning line, the light path set in advance originally is due to the change of infusion bottle liquid level, light
The refractive direction of line changes therewith so that the laser pick-off module fixed can not now be received entirely the light beam letter
Number, now controller driving alarm produces alarm signal.
4. a kind of utilization photoelectric detecting technology as described in claim 1 or 3 detects the device of infusion bottle liquid level, its feature exists
In：The controller is contrasted the beam signal that the beam signal that laser emitting module is launched is received with laser pick-off module
Analysis；When the beam signal of transmitting is identical with the beam signal received, that is, represent that liquid level is normal；And when the light beam letter received
When number different with the beam signal of transmitting, then it represents that liquid level occurs in that exception, arrival warning line.
5. a kind of utilization photoelectric detecting technology as claimed in claim 1 detects the device of infusion bottle liquid level, it is characterised in that：Institute
State controller and use single-chip microcomputer.
6. a kind of utilization photoelectric detecting technology as claimed in claim 4 detects the device of infusion bottle liquid level, it is characterised in that：
In detection process, the situation rocked and waved of infusion bottle inevitably occurs, this unstable meeting to connect in liquid level
False-alarm is produced during nearly warning line, this interference is overcome by the following method：When the light beam letter of the beam signal and transmitting received
During number difference, delay setting time is judged at least one times again, if the beam signal received and the beam signal of transmitting according to
It is so different, illustrate that liquid level reaches warning line.
7. a kind of utilization photoelectric detecting technology as claimed in claim 6 detects the device of infusion bottle liquid level, it is characterised in that：Institute
State controller and be also connected with clock circuit.
8. a kind of utilization photoelectric detecting technology as claimed in claim 7 detects the device of infusion bottle liquid level, it is characterised in that：It is logical
Oversampling clock circuit is controlled to the time of delay.
9. a kind of utilization photoelectric detecting technology as claimed in claim 1 detects the device of infusion bottle liquid level, it is characterised in that：Institute
State controller and be also connected with reset circuit and key control module.
10. a kind of utilization photoelectric detecting technology as claimed in claim 9 detects the device of infusion bottle liquid level, it is characterised in that：
After one-time detection terminates, control module is pushed button, controller driving reset circuit work, system returns to original state, waited
Detection work next time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710387499.XA CN107296998A (en) | 2017-05-26 | 2017-05-26 | A kind of utilization photoelectric detecting technology detects the device of infusion bottle liquid level |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710387499.XA CN107296998A (en) | 2017-05-26 | 2017-05-26 | A kind of utilization photoelectric detecting technology detects the device of infusion bottle liquid level |
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| Publication Number | Publication Date |
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| CN107296998A true CN107296998A (en) | 2017-10-27 |
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| CN201710387499.XA Pending CN107296998A (en) | 2017-05-26 | 2017-05-26 | A kind of utilization photoelectric detecting technology detects the device of infusion bottle liquid level |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107952141A (en) * | 2017-11-21 | 2018-04-24 | 冯智泉 | A kind of clinical automatic alarm device for fluid infusion |
| GB2560085A (en) * | 2017-01-03 | 2018-08-29 | Buchanan Campbell Iain | A housing for an intravenous drip apparatus |
| CN111811615A (en) * | 2020-06-19 | 2020-10-23 | 上海电机学院 | Distribution transformer oil level monitoring system based on photoelectric detection |
| CN114839341A (en) * | 2022-04-29 | 2022-08-02 | 华能国际电力股份有限公司 | Cut-off detection device and use method thereof |
| CN115156099A (en) * | 2022-09-06 | 2022-10-11 | 山东鲁西药业有限公司 | Reagent pipe neglected loading detection device |
| CN115183843A (en) * | 2022-05-17 | 2022-10-14 | 九牧厨卫股份有限公司 | Liquid level determination method and device, fragrance device and fragrance mirror |
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| EP0146772A1 (en) * | 1983-12-09 | 1985-07-03 | Siemens-Elema AB | Drip counting device for an infusion apparatus |
| CN2429178Y (en) * | 2000-06-26 | 2001-05-09 | 浙江大学 | Level alarm for infusion |
| CN102974000A (en) * | 2012-10-31 | 2013-03-20 | 江门市五邑中医院 | Hospital venous transfusion monitoring meter and management system |
| CN204501936U (en) * | 2015-03-23 | 2015-07-29 | 张宗璞 | A kind of based on liquid level monitoring warning system more than single-chip microcomputer drop |
| CN106620959A (en) * | 2017-02-24 | 2017-05-10 | 杨波 | Distributed high-capacity intelligent infusion monitoring system |
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2017
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0146772A1 (en) * | 1983-12-09 | 1985-07-03 | Siemens-Elema AB | Drip counting device for an infusion apparatus |
| CN2429178Y (en) * | 2000-06-26 | 2001-05-09 | 浙江大学 | Level alarm for infusion |
| CN102974000A (en) * | 2012-10-31 | 2013-03-20 | 江门市五邑中医院 | Hospital venous transfusion monitoring meter and management system |
| CN204501936U (en) * | 2015-03-23 | 2015-07-29 | 张宗璞 | A kind of based on liquid level monitoring warning system more than single-chip microcomputer drop |
| CN106620959A (en) * | 2017-02-24 | 2017-05-10 | 杨波 | Distributed high-capacity intelligent infusion monitoring system |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2560085A (en) * | 2017-01-03 | 2018-08-29 | Buchanan Campbell Iain | A housing for an intravenous drip apparatus |
| GB2560085B (en) * | 2017-01-03 | 2019-02-27 | Buchanan Campbell Iain | A housing for an intravenous drip apparatus |
| CN107952141A (en) * | 2017-11-21 | 2018-04-24 | 冯智泉 | A kind of clinical automatic alarm device for fluid infusion |
| CN111811615A (en) * | 2020-06-19 | 2020-10-23 | 上海电机学院 | Distribution transformer oil level monitoring system based on photoelectric detection |
| CN114839341A (en) * | 2022-04-29 | 2022-08-02 | 华能国际电力股份有限公司 | Cut-off detection device and use method thereof |
| CN115183843A (en) * | 2022-05-17 | 2022-10-14 | 九牧厨卫股份有限公司 | Liquid level determination method and device, fragrance device and fragrance mirror |
| CN115156099A (en) * | 2022-09-06 | 2022-10-11 | 山东鲁西药业有限公司 | Reagent pipe neglected loading detection device |
| CN115156099B (en) * | 2022-09-06 | 2023-01-24 | 山东鲁西药业有限公司 | Reagent pipe neglected loading detection device |
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Application publication date: 20171027 |