CN106562780A - External drainage system pipeline flow rate monitoring device - Google Patents
External drainage system pipeline flow rate monitoring device Download PDFInfo
- Publication number
- CN106562780A CN106562780A CN201510652710.7A CN201510652710A CN106562780A CN 106562780 A CN106562780 A CN 106562780A CN 201510652710 A CN201510652710 A CN 201510652710A CN 106562780 A CN106562780 A CN 106562780A
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- CN
- China
- Prior art keywords
- monitoring device
- drainage system
- external drainage
- system pipeline
- pipeline flow
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Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/03—Detecting, measuring or recording fluid pressure within the body other than blood pressure, e.g. cerebral pressure; Measuring pressure in body tissues or organs
- A61B5/031—Intracranial pressure
Abstract
The invention relates to an external drainage system pipeline flow rate monitoring device, which comprises a single chip microcomputer, wherein an interface of the single chip microcomputer is connected with an A/D (Analog-to-Digital) converter and a warning device; the A/D converter communicates with a micro flow rate sensor through a signal conditioning circuit. The invention provides the external drainage system pipeline flow rate monitoring device with the advantages that the flow rate detection efficiency of a medical pump is improved; the labor investment is reduced; and the error rate is reduced.
Description
Technical field
The present invention relates to a kind of flow monitoring device, being mainly used in after brain surgery is used for the external drainage system pipeline flow monitoring device for monitoring cranial cavity inner product flow quantity measure.
Background technology
As medical pump is increasingly extensive in Clinical practice, its quality control has been received significant attention.For illustrating in this technology explanation for the postoperative external drainage system of brain surgery, their flow velocity is only guaranteed within safety range, can just be effectively protected patient.But the efficiency of existing medical pump detecting instrument detection is low, it is impossible to reach the clinical requirement to medical pump flow rate detection efficiency.
The content of the invention
The present invention is directed to drawbacks described above, it is therefore intended that provides a kind of flow rate detection efficiency that improve medical pump, reduces human input, reduces the external drainage system pipeline flow monitoring device of error rate.
It is for this technical solution used in the present invention：The present invention includes single-chip microcomputer, and the interface of the single-chip microcomputer connects respectively with A/D converter, alarm, and A/D transducers are communicated by signal conditioning circuit and microflow sensor.
The single-chip microcomputer selects AVR single chip.
The signal conditioning circuit includes filter circuit and amplifying circuit, and the filter circuit is connected on microflow sensor, and the amplifying circuit is connected to A/D converter.
The single-chip microcomputer includes depositor, reader and comparator, the depositor storage correlation original figure amount, the reader reads the digital quantity that A/D converter is transmitted, the comparator realizes that the digital quantity in original figure amount and reader in depositor is compared, and alarm is controlled then and sends different warnings according to different conditions.
The alarm is the buzzer that can send different mode sound.
It is an advantage of the invention that：The AVR single chip of the application is the master control core of whole device, and the single-chip microcomputer has confidentiality high, and the advantage of strong antijamming capability is used widely in field of medical device.High-accuracy microflow sensor carries out monitor in real time, real-time detection microflow rate value to whole device flow.Mainly comprising filter circuit and amplifying circuit, the effect of the circuit is to pass to high accuracy analog/digital conversion chip after output signal Jing processing of circuit by sensor to signal conditioning circuit.Current flow value is changed into high accuracy analog/digital conversion chip the digital quantity for being available for single-chip microcomputer to read.Single-chip microcomputer is correctly read after current flow information, according to the flow velocity cut off value of program setting, drives buzzer to send prompt tone, the scope of medical personnel's current flow is informed, to make positive counte-rplan.Here the unit of the system flow velocity is ml/24h.After exception occurs in flow velocity, buzzer will send alarm signal, and alarm signal can stop after button confirms.
From the above mentioned, the present invention is realized flow and in real time, is accurately monitored by the reasonable Arrangement of each module, through actually used, achieves good using effect.
Description of the drawings
Fig. 1 is external drainage system hardware circuit module schematic diagram of the present invention.
Fig. 2,3,4,5 are the logic diagram of distinct program of the present invention.
Specific embodiment
It is flow rate of liquid that the present invention predominantly detects parameter for the medical pump of the postoperative external drainage system of brain surgery.High-precision flow sensor is used for this, flow transducer output for pulse signal, counted by its flip-flop number, total uninterrupted has been reacted in the numerical values recited of regular hour inside counting device, then again divided by the time, just the mean flow rate of tested medical pump is drawn, the difference of the flow speed value that the flow speed value and medical pump are arranged is the error of medical pump.By being contrasted with the safety range of setting, real-time monitoring flow velocity, and change in flow is forecast in real time.
The present invention includes single-chip microcomputer, and the interface of the single-chip microcomputer connects respectively with A/D converter, alarm, and A/D transducers are communicated by signal conditioning circuit and microflow sensor.
The single-chip microcomputer selects AVR single chip.
The signal conditioning circuit includes filter circuit and amplifying circuit, and the filter circuit is connected on microflow sensor, and the amplifying circuit is connected to A/D converter.
The single-chip microcomputer includes depositor, reader and comparator, the depositor storage correlation original figure amount, the reader reads the digital quantity that A/D converter is transmitted, the comparator realizes that the digital quantity in original figure amount and reader in depositor is compared, and alarm is controlled then and sends different warnings according to different conditions.
The alarm is the buzzer that can send different mode sound.
According to hardware circuit design result and system function requirement, the software flow of the system is described below.
Whole software program flow process of the invention includes four parts：Mastery routine（See Fig. 2）, intervalometer 0 interrupts（See Fig. 3）, intervalometer 1 interrupts（See Fig. 4）, intervalometer 3 interrupts（See Fig. 5）.Mastery routine realizes the monitor in real time to hydrops absorption plant flow velocity, system initialization related register first, and set the cycle of cycle that buzzer sounds and detection flow velocity, then in a circulating manner, constantly judge whether current system is abnormal, if there is abnormal then buzzer warning, report to the police and stop after button confirms.
Except mastery routine, whole software system needs and interrupt routine coordinates to realize complete function.The flow velocity sampling period is set by intervalometer 0, timing terminates to be carried out the interrupt service routine of intervalometer 0.Related data is obtained first with microflow sensor, needs to obtain current flow velocity after internal system conversion.System is different according to flow velocity, is provided with different buzzer prompt tones, and according to different prompt tones, medical personnel can learn the scope residing for current flow, to realize the monitor in real time to patient situation.Here the unit of flow velocity is ml/24h, such as when flow velocity is almost nil i.e.<When 5, illustrate to may have occurred blocking, system will open abnormality timing, when abnormal conditions continue 1 hour（Persistent period can be set as needed）When system will send alarm signal；When flow velocity is between 5 and 100, system is lower-speed state, sets buzzer prompt tone as pattern 1；When flow velocity is between 100 and 300, system is middling speed state, sets buzzer prompt tone as pattern 2；When flow velocity is more than 300, system is fast state, sets buzzer prompt tone as pattern 3（Under normal circumstances flow velocity is not more than 300）.
The period frequency that buzzer rings is different, to realize to forecast different in flow rate.Buzzer sounds the cycle, i.e., the time interval of adjacent action of sounding twice, interrupts to realize by intervalometer 1.Intervalometer 0 interrupts to detect flow velocity.When timing terminates to be carried out the interrupt service routine of intervalometer 1, system first obtains current buzzer prompt tone pattern, then drives buzzer to sound.The sound that sounds of different buzzer prompt tone patterns is differentiated, and when flow velocity is between 5 and 100, system is lower-speed state, sets buzzer prompt tone as pattern 1, and buzzer rings once every 10s；When flow velocity is between 100 and 300, system is middling speed state, sets buzzer prompt tone as pattern 2, and buzzer rings once every 5s；When flow velocity is more than 300, system is fast state, sets buzzer prompt tone as pattern 3, and buzzer rings once every 1s.So, flow velocity can be judged by the sound frequency of sound of buzzer, it is convenient and reliable.
It is too small that intervalometer 3 is used for abnormality timing, i.e. flow velocity, it may occur however that blocking.Once abnormality lasts till the time of setting, such as 1 hour（Persistent period can be set as needed）, the buzzer of system will sound the alarm sound.
Claims (5)
1. external drainage system pipeline flow monitoring device, it is characterised in that including single-chip microcomputer, the interface of the single-chip microcomputer connects respectively with A/D converter, alarm, and A/D transducers are communicated by signal conditioning circuit and microflow sensor.
2. external drainage system pipeline flow monitoring device according to claim 1, it is characterised in that the single-chip microcomputer selects AVR single chip.
3. external drainage system pipeline flow monitoring device according to claim 1, it is characterized in that, the signal conditioning circuit includes filter circuit and amplifying circuit, and the filter circuit is connected on microflow sensor, and the amplifying circuit is connected to A/D converter.
4. external drainage system pipeline flow monitoring device according to claim 1, it is characterized in that, the single-chip microcomputer includes depositor, reader and comparator, the depositor storage correlation original figure amount, the reader reads the digital quantity that A/D converter is transmitted, the comparator realizes that the digital quantity in original figure amount and reader in depositor is compared, and alarm is controlled then and sends different warnings according to different conditions.
5. external drainage system pipeline flow monitoring device according to claim 1, it is characterised in that the alarm is the buzzer that can send different mode sound.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510652710.7A CN106562780A (en) | 2015-10-10 | 2015-10-10 | External drainage system pipeline flow rate monitoring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510652710.7A CN106562780A (en) | 2015-10-10 | 2015-10-10 | External drainage system pipeline flow rate monitoring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106562780A true CN106562780A (en) | 2017-04-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510652710.7A Pending CN106562780A (en) | 2015-10-10 | 2015-10-10 | External drainage system pipeline flow rate monitoring device |
Country Status (1)
| Country | Link |
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| CN (1) | CN106562780A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108898794A (en) * | 2018-07-11 | 2018-11-27 | 刘铁楠 | For monitoring the devices, systems, and methods of the drainage data of patient |
| CN113884145A (en) * | 2021-10-08 | 2022-01-04 | 成都创迪光电科技有限公司 | High-precision real-time monitoring system for additive spraying of vacuum blood collection tube and flow collection method |
-
2015
- 2015-10-10 CN CN201510652710.7A patent/CN106562780A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108898794A (en) * | 2018-07-11 | 2018-11-27 | 刘铁楠 | For monitoring the devices, systems, and methods of the drainage data of patient |
| WO2020010654A1 (en) * | 2018-07-11 | 2020-01-16 | 刘铁楠 | Device for monitoring fluid drainage data of patient, system, and method |
| CN113884145A (en) * | 2021-10-08 | 2022-01-04 | 成都创迪光电科技有限公司 | High-precision real-time monitoring system for additive spraying of vacuum blood collection tube and flow collection method |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170419 |
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| WD01 | Invention patent application deemed withdrawn after publication |