CN103083753A - Capacitor-type drip liquid level monitoring and alarm device - Google Patents
Capacitor-type drip liquid level monitoring and alarm device Download PDFInfo
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- CN103083753A CN103083753A CN2013100683831A CN201310068383A CN103083753A CN 103083753 A CN103083753 A CN 103083753A CN 2013100683831 A CN2013100683831 A CN 2013100683831A CN 201310068383 A CN201310068383 A CN 201310068383A CN 103083753 A CN103083753 A CN 103083753A
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Abstract
Disclosed is a capacitor-type drip liquid level monitoring alarm device. The capacitor-type drip liquid level monitoring and alarm device comprises measurement capacitor which is additionally arranged on the outer wall of a transfusion tube communicated with the inlet of a drip chamber of a medical vein transfusion tube. Each two of the measurement capacitor, a capacitance measurement circuit, a single chip machine and a data wireless transmitting circuit are sequentially and electrically connected. The structure avoids the defects that occupation of manpower resource is large, efficiency is low and anti-interference ability is bad.
Description
Technical field
The invention belongs to drop liquid level sensing device technical field, be specifically related to a kind of capacitance type dropping level monitoring alarm device, namely when intravenous drip infusion, for the capacitance type dropping level monitoring alarm device of the fluid level condition in the monitoring transfusion pipe output alarm information.
Background technology
When infusion, the equipment for infusion can only adopt the way of personal monitoring's liquid level usually now, and its shortcoming is that human resources's occupancy is large, and efficiency is low.And some employing sound, light principle detect the device of drop infusion liquid level, poor anti jamming capability, easy false alarm in actual applications.
Summary of the invention
Purpose of the present invention provides a kind of capacitance type dropping level monitoring alarm device, comprise the measurement electric capacity on the outer wall that is installed at the infusion tube that the dropping funnel entrance with the Medical venous transfusion pipe is conducted, measure electric capacity, capacitance measurement circuit, single-chip microcomputer and data wireless transtation mission circuit and be electrically connected in twos successively, such structure has avoided that human resources's occupancy is large, efficiency is low and the defect of poor anti jamming capability.
In order to overcome deficiency of the prior art, the invention provides a kind of solution of capacitance type dropping level monitoring alarm device, specific as follows:
A kind of capacitance type dropping level monitoring alarm device, comprise the measurement electric capacity 3 on the outer wall that is installed at the infusion tube 1 that dropping funnel 2 entrances with the Medical venous transfusion pipe are conducted, measure electric capacity 3, capacitance measurement circuit 5, single-chip microcomputer 6 and data wireless transtation mission circuit 7 and be electrically connected in twos successively.
Described measurement electric capacity 3 is the cylindrical capacitor with the gap, edge, the cylindrical capacitor is looped around on the outer wall of infusion tube 1, the height that the pole plate of cylindrical capacitor is metal material and this pole plate is no more than 3cm, and the width in gap, described edge is no more than 0.5mm.
Described measurement electric capacity 3 outsides install grounded metallic shield cover 8 additional.
Described capacitance measurement circuit 5 changes for electric capacitance change being changed into to frequency values.
Described capacitance measurement circuit 5 comprises oscillator divider chip and accessory circuit thereof.
Described oscillator divider chip is the SN74HC4060 chip, the SN74HC4060 chip is electrically connected to measurement electric capacity 3 by its accessory circuit, an end of measuring electric capacity 3 is electrically connected to an end of RS type resistance R 2 and an end of RT type resistance R 1, the other end of the other end of RS type resistance R 2 and RT type resistance R 1 is electrically connected with RS type resistance port and the RT type resistance port of SN74HC4060 chip respectively, the other end of measurement electric capacity 3 is electrically connected with the electric capacity port CT of SN74HC4060 chip, the output port of power source that the same power supply VCC that the electric connection mode of SN74HC4060 chip by its accessory circuit and single-chip microcomputer 6 is described SN74HC4060 chip is electrically connected, 2
12frequency division output terminal mouth and ground connection output port are electrically connected with power input mouth, frequency division input port and the ground connection input port of single-chip microcomputer 6 respectively, and the signal output port that the electric connection mode of single-chip microcomputer 6 and data wireless transtation mission circuit 7 is single-chip microcomputer 6 is electrically connected with the signal input port of data wireless transtation mission circuit 7.
Described single-chip microcomputer 6, for reading the output frequency of capacitance measurement circuit 5, is judged fluid level condition by the liquid level judge module analysis of single-chip microcomputer inside, and then this fluid level condition is sent corresponding fluid level condition and warning message by wireless transmission circuit 7.
Described single-chip microcomputer 6 is low-power scm, and this low-power scm is MSP430 series low-power scm, and described wireless transmission circuit 7 is comprised of nRF24L01 chip and peripheral circuit.
The circuit of application such scheme of the present invention and measure electric capacity and all adopt the metal cap shielding, capacity of resisting disturbance is strong, stable performance, low price, is a kind of method of very practical monitoring transfusion pipe liquid level.And a kind of have simple in structure, stable performance, low-cost tube for transfusion level monitoring alarm device have really been realized, to meet level monitoring warning requirement in infusion process.
The accompanying drawing explanation
The figure l measurement electric capacity that is capacitance type dropping level monitoring alarm device of the present invention is installed at the structural representation on the outer wall of the infusion tube that the dropping funnel entrance with the Medical venous transfusion pipe is conducted.
Fig. 2 is the syndeton schematic diagram of measuring electric capacity, capacitance measurement circuit, single-chip microcomputer and data wireless transtation mission circuit.
The specific embodiment
Below in conjunction with accompanying drawing, summary of the invention is described further:
Shown in seeing figures.1.and.2, capacitance type dropping level monitoring alarm device, comprise the measurement electric capacity 3 on the outer wall that is installed at the infusion tube 1 that dropping funnel 2 entrances with the Medical venous transfusion pipe are conducted, measure electric capacity 3, capacitance measurement circuit 5, single-chip microcomputer 6 and data wireless transtation mission circuit 7 and be electrically connected in twos successively.Described measurement electric capacity 3 is the cylindrical capacitor with the gap, edge, the cylindrical capacitor is looped around on the outer wall of infusion tube 1, the height that the pole plate of cylindrical capacitor is metal material and this pole plate is no more than 3cm, and the width in gap, described edge is no more than 0.5mm.Described measurement electric capacity 3 outsides install grounded metallic shield cover 8 additional.Described capacitance measurement circuit 5 changes for electric capacitance change being changed into to frequency values.Described capacitance measurement circuit 5 comprises oscillator divider chip and accessory circuit thereof.Described oscillator divider chip is the SN74HC4060 chip, the SN74HC4060 chip is electrically connected to measurement electric capacity 3 by its accessory circuit, an end of measuring electric capacity 3 is electrically connected to an end of RS type resistance R 2 and an end of RT type resistance R 1, the other end of the other end of RS type resistance R 2 and RT type resistance R 1 is electrically connected with RS type resistance port and the RT type resistance port of SN74HC4060 chip respectively, the other end of measurement electric capacity 3 is electrically connected with the electric capacity port CT of SN74HC4060 chip, the output port of power source that the same power supply VCC that the electric connection mode of SN74HC4060 chip by its accessory circuit and single-chip microcomputer 6 is described SN74HC4060 chip is electrically connected, 2
12frequency division output terminal mouth and ground connection output port are electrically connected with power input mouth, frequency division input port and the ground connection input port of single-chip microcomputer 6 respectively, and the signal output port that the electric connection mode of single-chip microcomputer 6 and data wireless transtation mission circuit 7 is single-chip microcomputer 6 is electrically connected with the signal input port of data wireless transtation mission circuit 7.Described single-chip microcomputer 6, for reading the output frequency of capacitance measurement circuit 5, is judged fluid level condition by the liquid level judge module analysis of single-chip microcomputer inside, and then this fluid level condition is sent corresponding fluid level condition and warning message by wireless transmission circuit 7.Described single-chip microcomputer 6 is low-power scm, and this low-power scm is MSP430 series low-power scm, and described wireless transmission circuit 7 is comprised of nRF24L01 chip and peripheral circuit.
Operation principle of the present invention is that while in the infusion tube 1 of measuring electric capacity 3 installed positions, liquid 4 being arranged, it is constant that capacitance keeps, and when there is no liquid, capacitance can reduce; Capacitance measurement circuit 5 changes into frequency change to electric capacitance change, the frequency signal changed is judged fluid level condition by the liquid level judge module analysis of single-chip microcomputer 6 inside, and then this fluid level condition is sent corresponding fluid level condition and warning message by wireless transmission circuit 7.Owing in measurement electric capacity 3 outsides, installing grounded metallic shield cover 8 additional, the capacity of resisting disturbance of device is significantly improved in addition, it is more accurate to measure.
Claims (8)
1. a capacitance type dropping level monitoring alarm device, it is characterized in that comprising the measurement electric capacity (3) on the outer wall that is installed at the infusion tube (1) that dropping funnel (2) entrance with the Medical venous transfusion pipe is conducted, measure the electrical connection in twos successively of electric capacity (3), capacitance measurement circuit (5), single-chip microcomputer (6) and data wireless transtation mission circuit (7).
2. capacitance type dropping level monitoring alarm device according to claim 1, it is characterized in that described measurement electric capacity (3) is for the cylindrical capacitor with the gap, edge, the cylindrical capacitor is looped around on the outer wall of infusion tube (1), the height that the pole plate of cylindrical capacitor is metal material and this pole plate is no more than 3cm, and the width in gap, described edge is no more than 0.5mm.
3. according to claim 1 or capacitance type dropping level monitoring alarm device claimed in claim 2, it is characterized in that described measurement electric capacity (3) outside installs grounded metallic shield cover (8) additional.
4. according to claim 1 or capacitance type dropping level monitoring alarm device claimed in claim 2, it is characterized in that described capacitance measurement circuit (5) changes for electric capacitance change being changed into to frequency values.
5. according to claim 1 or capacitance type dropping level monitoring alarm device claimed in claim 2, it is characterized in that described capacitance measurement circuit (5) comprises oscillator divider chip and accessory circuit thereof.
6. capacitance type dropping level monitoring alarm device according to claim 5, it is characterized in that described oscillator divider chip is the SN74HC4060 chip, the SN74HC4060 chip is electrically connected to measurement electric capacity (3) by its accessory circuit, an end of measuring electric capacity (3) is electrically connected to an end of RS type resistance R 2 and an end of RT type resistance R 1, the other end of the other end of RS type resistance R 2 and RT type resistance R 1 is electrically connected with RS type resistance port and the RT type resistance port of SN74HC4060 chip respectively, the other end of measurement electric capacity (3) is electrically connected with the electric capacity port CT of SN74HC4060 chip, the output port of power source that the same power supply VCC that the electric connection mode of SN74HC4060 chip by its accessory circuit and single-chip microcomputer (6) is described SN74HC4060 chip is electrically connected, 2
12frequency division output terminal mouth and ground connection output port power input mouth, frequency division input port and the ground connection input port of same single-chip microcomputer (6) respectively are electrically connected, and the signal output port that the electric connection mode of single-chip microcomputer (6) and data wireless transtation mission circuit (7) is single-chip microcomputer (6) is electrically connected with the signal input port of data wireless transtation mission circuit (7).
7. according to claim 1 or capacitance type dropping level monitoring alarm device claimed in claim 2, it is characterized in that described single-chip microcomputer (6) is for reading the output frequency of capacitance measurement circuit (5), fluid level condition is judged in liquid level judge module analysis by single-chip microcomputer inside, and then this fluid level condition is sent corresponding fluid level condition and warning message by wireless transmission circuit (7).
8. according to claim 1 or capacitance type dropping level monitoring alarm device claimed in claim 2, it is characterized in that described single-chip microcomputer (6) is low-power scm, this low-power scm is MSP430 series low-power scm, and described wireless transmission circuit (7) is comprised of nRF24L01 chip and peripheral circuit.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100683831A CN103083753A (en) | 2013-03-05 | 2013-03-05 | Capacitor-type drip liquid level monitoring and alarm device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2013100683831A CN103083753A (en) | 2013-03-05 | 2013-03-05 | Capacitor-type drip liquid level monitoring and alarm device |
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| CN103083753A true CN103083753A (en) | 2013-05-08 |
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| CN2013100683831A Pending CN103083753A (en) | 2013-03-05 | 2013-03-05 | Capacitor-type drip liquid level monitoring and alarm device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104841040A (en) * | 2015-01-24 | 2015-08-19 | 西北工业大学 | Liquid dropping alarm |
| CN104958810A (en) * | 2015-07-24 | 2015-10-07 | 广西水利电力职业技术学院 | Liquid level automatic alarm device in medical transfusion |
| CN108245739A (en) * | 2018-02-06 | 2018-07-06 | 钱月珍 | Medical transfusion margin monitoring device |
| CN108514668A (en) * | 2018-03-22 | 2018-09-11 | 安顺百世康泰医疗器械有限公司 | A kind of Intelligent transfusion monitoring system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1762258A1 (en) * | 2005-09-08 | 2007-03-14 | Hidex S.R.L. | Infusion apparatus with drip chamber having capacitance based liquid level monitoring |
| CN201783035U (en) * | 2010-08-11 | 2011-04-06 | 张胜杰 | Intelligent infusion instrument |
| CN201791191U (en) * | 2010-09-06 | 2011-04-13 | 江苏省常熟职业教育中心校 | Automatic transfusion caller |
| CN102526837A (en) * | 2012-01-18 | 2012-07-04 | 李益民 | Transfusion speed monitoring technology |
-
2013
- 2013-03-05 CN CN2013100683831A patent/CN103083753A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1762258A1 (en) * | 2005-09-08 | 2007-03-14 | Hidex S.R.L. | Infusion apparatus with drip chamber having capacitance based liquid level monitoring |
| CN201783035U (en) * | 2010-08-11 | 2011-04-06 | 张胜杰 | Intelligent infusion instrument |
| CN201791191U (en) * | 2010-09-06 | 2011-04-13 | 江苏省常熟职业教育中心校 | Automatic transfusion caller |
| CN102526837A (en) * | 2012-01-18 | 2012-07-04 | 李益民 | Transfusion speed monitoring technology |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104841040A (en) * | 2015-01-24 | 2015-08-19 | 西北工业大学 | Liquid dropping alarm |
| CN104958810A (en) * | 2015-07-24 | 2015-10-07 | 广西水利电力职业技术学院 | Liquid level automatic alarm device in medical transfusion |
| CN108245739A (en) * | 2018-02-06 | 2018-07-06 | 钱月珍 | Medical transfusion margin monitoring device |
| CN108514668A (en) * | 2018-03-22 | 2018-09-11 | 安顺百世康泰医疗器械有限公司 | A kind of Intelligent transfusion monitoring system |
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Application publication date: 20130508 |