CN207950265U - A kind of wireless transfusion alarm device based on capacitance sensor - Google Patents
A kind of wireless transfusion alarm device based on capacitance sensor Download PDFInfo
- Publication number
- CN207950265U CN207950265U CN201721279303.7U CN201721279303U CN207950265U CN 207950265 U CN207950265 U CN 207950265U CN 201721279303 U CN201721279303 U CN 201721279303U CN 207950265 U CN207950265 U CN 207950265U
- Authority
- CN
- China
- Prior art keywords
- fixture
- light emitting
- alarm system
- capacitance
- power supply
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000001802 infusion Methods 0.000 claims abstract description 28
- 230000001681 protective effect Effects 0.000 claims description 9
- 239000007788 liquid Substances 0.000 abstract description 19
- 230000005540 biological transmission Effects 0.000 description 8
- 238000000034 method Methods 0.000 description 8
- 230000006698 induction Effects 0.000 description 6
- 239000003990 capacitor Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 239000003814 drug Substances 0.000 description 4
- 229940079593 drug Drugs 0.000 description 3
- 230000003760 hair shine Effects 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 239000000523 sample Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000000116 mitigating effect Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Infusion, Injection, And Reservoir Apparatuses (AREA)
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
Abstract
The utility model is related to a kind of wireless transfusion alarm devices based on capacitance sensor, belong to medical and hygiene article field and electronic equipment field.Including warning clip and alarm system, warning clip is clamped in the bottleneck of medical infusion bottle, and alarm system is mounted on medical worker operating room, and warning clip is connect with alarm system wireless, and warning clip includes：Fixture, electrode plate, circuit board, post electrode plate in both sides on the inside of fixture, circuit board is fixed on one end of fixture, the components such as capacitance switch, signal projector are integrated in circuit board, alarm system includes the signal receiver being serially connected, power supply III, light emitting diode II, buzzer, and signal receiver is wirelessly connected with signal projector.When the liquid being infused in medical infusion bottle it is soon defeated to the greatest extent when two light emitting diodes be lit, buzzer sounding alarm, medical staff can timely processing can be effectively prevented from unnecessary danger to reduce the burden of patient and entourage.
Description
Technical field
The utility model is related to a kind of wireless transfusion alarm devices based on capacitance sensor, belong to medical and hygiene article neck
Domain and electronic equipment field.
Background technology
Currently, the infusion alarm generally recognized is broadly divided into two kinds according to operation principle：One kind using weight
Inductor, with the mitigation of infusion bottle weight in infusion process, weight induction device senses the variation of weight, default until reaching
Threshold value when, triggering alarm alarm.This method is relatively complicated in use, and circuit is also more complicated, and pole
It is not a kind of good method easily by ectocine.Another uses photoelectric sensor, using light in infusion bottle
It reflects and reflects to detect the liquid level in infusion bottle.This method and technology is more mature, but applicability is insufficient, more especially
It is when being protected from light similar drug, and using and inconvenient.
It is therefore desirable to a kind of convenient and reliable, sensitive infusion alarm be developed, to make up other alarms not
Foot.
Utility model content
The technical problem to be solved by the present invention is to provide a kind of wireless transfusion alarm device based on capacitance sensor,
It is using capacitance type sensor as detection probe, simple in structure, high sensitivity, good temp characteristic, dynamic response be good, adaptability
By force, cheap, and can effectively detect transfusion condition.
The technical solution adopted in the utility model is：A kind of wireless transfusion alarm device based on capacitance sensor, including
Warning clip and alarm system 18, warning clip are clamped in the bottleneck of medical infusion bottle 19, and alarm system 18 is mounted on medical worker's work
Make room, warning clip is wirelessly connected with alarm system 18, and warning clip includes：Fixture 1, electrode plate 3, circuit board 2,1 inside of fixture
Electrode plate 3 is posted on both sides, and circuit board 2 is fixed on one end of fixture 1, and power supply I 4, capacitance switch 6, switch are integrated in circuit board 2
5, triode 7, signal projector 10, light emitting diode I 8, power supply II 9, protective resistance 11, power supply I 4, capacitance switch 6, switch 5
Concatenation forming circuit, electrode plate 3 are connect with capacitance switch 6, and capacitance switch 6 is connect with the base stage of triode 7 simultaneously, triode 7
Cathode of the collector successively with protective resistance 11, signal projector 10, power supply II 9, light emitting diode I 8 be serially connected, send out
Optical diode I 8 anode connect with the emitter of triode 7, alarm system 18 including be serially connected signal receiver 12,
Power supply III 15, light emitting diode II 13, buzzer 14, signal receiver 12 are wirelessly connected with signal projector 10.
The maximum spacing of 1 inside of fixture is 2cm, and the thickness of fixture 1 is less than or equal to 18mm.
The operation principle of the utility model is：
Using non-contact capacitance switch 6 as sensor and crucial level sensing element, by the utility model front end
It is clipped in 19 bottle mouth position of medical infusion bottle by fixture 1, the electrode plate 3 of capacitance switch is posted on the inside both sides of fixture 1 respectively, between
Air or other other substances as medium, capacitance, find out from formula,Size by polar plate area, pole
Plate spacing and dielectric constant determine.Polar plate area and plate distance are that fixed value is constant in measurement process, capacitanceJust only
Depending on dielectric constant.When infusion bottle normal infusion, capacitor dielectric between 1 both sides electrode plate 3 of fixture is by a little air, defeated
Liquid forms in liquid bottle material and infusion bottle.When the liquid in infusion bottle will be totally lost, liquid level passes through the induction between electrode plate 3
The liquid of Qu Shi, the capacitor dielectric between pole plate will be replaced by the air for entering infusion bottle.The dielectric constant of water is about 80（According to
Western medicine pharmacology, the drug pair in infusion bottle in liquidInfluence almost without therefore the influence of drug is ignored）, empty
The dielectric constant of gas is about 1, so when capacitance switch 6 capacitance can with liquid level decline occur significantly change, work as capacitance
Drop to threshold value once, the output state of 6 output port of capacitance switch can be become high level 0.8V from low level 0.3V, be higher than three
Pole pipe conducting voltage 0.7V, as shown in Figure 2, triode 7 are connected, triode 7, light emitting diode I 8, power supply II 9, signal transmitting
Device 10, protective resistance 11 are formed into a loop, and drive light emitting diode I 8 in front end luminous alarm with this, signal projector 10 generates nothing
Line signal promotes the light emitting diode II 13 in the alarm system 18 of rear end, buzzer 14 to alarm.
Signal projector 10 is AM（Amplitude modulation）Working method, operating voltage 3.5-12V, transmission rate 4KB/s, transmission power
10mW, tranmitting frequency 433.92MHZ, transmission range is up to 20m；12 receives frequency of signal receiver is all 433.92MHZ, work
Voltage is 5V.
The utility model has the beneficial effects that：It can carry out being effectively detected whether liquid is totally lost in a contactless manner,
And when being soon totally lost, sounding is warned in buzzing, and LED lighting reduces patient to prompt caregiver to process as early as possible
With the burden of entourage.Avoid unnecessary danger.In addition, the utility model is when in use, it should be noted that defeated
During liquid, infusion bottle is not shaken fiercely.
Description of the drawings
Fig. 1 is the structural schematic diagram of the warning clip in the utility model；
Fig. 2 is the circuit diagram on circuit board 2 in the utility model；
Fig. 3 is the circuit diagram of the alarm system in the utility model；
Fig. 4 is the workflow schematic diagram in the utility model.
In figure respectively marked as：1- fixtures, 2- circuit boards, 3- electrode plates, 4- power supplys I, 5- switches, 6- capacitance switch, 7- tri-
Pole pipe, 8- light emitting diodes I, 9- power supplys II, 10- signal projectors, 11- protective resistances, 12- signal receivers, 13- luminous two
Pole pipe II, 14- buzzers, 15- power supplys III, 16- induction zones, 17- wireless transmissions, 18- zone of alarm, 19- medical infusion bottles.
Specific implementation mode
Utility model will be further explained below with reference to the attached drawings and specific embodiments.
Embodiment 1：As shown in Figs 1-4, a kind of wireless transfusion alarm device based on capacitance sensor, including warning clip and
Alarm system 18, warning clip are clamped in the bottleneck of medical infusion bottle 19, and alarm system 18 is mounted on medical worker operating room, alarm
Folder is wirelessly connected with alarm system 18, and warning clip includes：Post electricity in the both sides of fixture 1, electrode plate 3, circuit board 2,1 inside of fixture
Pole plate 3, circuit board 2 are fixed on one end of fixture 1, be integrated in circuit board 2 power supply I 4, capacitance switch 6, switch 5, triode 7,
Signal projector 10, light emitting diode I 8, power supply II 9, protective resistance 11, power supply I 4, capacitance switch 6, the concatenation of switch 5 are formed back
Road, electrode plate 3 are connect with capacitance switch 6, and capacitance switch 6 is connect with the base stage of triode 7 simultaneously, the collector of triode 7 according to
The secondary cathode with protective resistance 11, signal projector 10, power supply II 9, light emitting diode I 8 is serially connected, light emitting diode I 8
Anode connect with the emitter of triode 7, alarm system 18 including be serially connected signal receiver 12, power supply III 15,
Light emitting diode II 13, buzzer 14, signal receiver 12 are wirelessly connected with signal projector 10.
The maximum spacing of 1 inside of fixture is 2cm, and the thickness of fixture 1 is less than or equal to 18mm.
When specific works, the both sides of 1 inside of fixture can be bonded Medical infusion bottle opening, and the both sides of 1 inside of fixture are posted
Electrode plate 3, for detecting the liquid level in infusion bottle 19.Electrode plate 3 is the signal probe of capacitance switch 6, is for detecting liquid level
It is no close to capacitance switch 6；Capacitance switch 6, power supply I 4, switch 5 are formed into a loop, triode 7, signal projector 10, light-emitting diodes
Pipe I 8, power supply II 9, protective resistance 11 are sequentially connected with, and circuit is mounted in circuit board 2.As shown in Figure 2；When the liquid level of liquid
6 position of capacitance switch is reached, capacitance switch 6 sends out high level signal, and signal amplifies by triode 7, and signal projector 10 is protected
Resistance 11, triode 7, light emitting diode I 8, power supply 9 is protected to be connected.Light emitting diode I 8 shines, and signal projector 10 generates wirelessly
Signal.
Capacitance switch 6 includes two electrode plates 3 on the inside of fixture, triode of the connection of capacitance switch 6 with enlarging function
7, power supply II 9, power supply I 4, light emitting diode I 8, signal projector 10, the front-end circuit that electrode plate 3 connects are mounted on circuit board 2
On.The electrode plate 3 of 1 inside of fixture can be close to Medical infusion bottle opening.The buzzer 14 of rear end be sequentially connected with signal receiver 12,
Power supply III 15, light emitting diode II 13, buzzer 14.Signal receiver 12 is connected after receiving signal, and warning circuit is connected, hair
Optical diode II 13 is shinny and 14 sounding of buzzer.
The capacitance of capacitance switch 6, in formula,For dielectric constant,For capacitor plate effective area,For
Distance between electrode plate；When、For steady state value when,Only withIt is related.Liquid level in infusion medical infusion bottle reaches capacitance and opens
The electrode Board position for closing 6, causesValue variation, toVariation, when capacitance reach certain threshold value hereinafter, capacitance switch 6 trigger,
Capacitance switch 6 is point driving switch, and output port output becomes high level 0.8V from low level 0.3V, is higher than 7 electric conduction of triode
0.7V, 7 collector of triode is pressed to be connected with emitter.Light emitting diode I 8 is bright, and signal projector 10 sends signal.
The application of capacitance switch 6 and fixture 1 is the innovative point of the utility model, and the electrode plate 3 of capacitance switch 6 is directly viscous
It is attached to 1 inside of fixture, front-end circuit is directly installed on fixture 1, and is connect with electrode plate 3.So that the front end of the utility model
It is completely integrated on fixture, it is convenient using very simple.
The electrode plate spacing of capacitance switch 6 is 2cm, and the thickness of fixture 1 is no more than 18mm.
In circuit shown in Fig. 2, signal projector 10 is AM（Amplitude modulation）Working method, operating voltage 3.5-12V, transmission
Rate 4KB/s, transmission power 10mW, tranmitting frequency 433.92MHZ, transmission range is up to 20m；Signal receiver in Fig. 3 circuits
12 receives frequencies are all 433.92MHZ, operating voltage 5V.
In the electronic circuit as shown in figure 3, it is off when signal receiver 12 does not receive signal, is come from when receiving
When the signal of front end signal transmitter, become channel status, signal receiver 12, light emitting diode II 13, buzzer 14, power supply
III 15 connect.Light emitting diode II 13 shines, 14 sounding of buzzer, generates warning effect.
In schematic diagram shown in Fig. 4, two electrode plates 3 in induction zone 16 constitute an open capacitor, this
When, the area and spacing of pole plate are fixed, and the size of capacitance is only related with medium.When the liquid level in induction region changes
When, the liquid in medium is gradually replaced by air, and dielectric constant is widely varied, and after reaching certain threshold value, capacitance can be caused to hold
6 output high level are closed, triode 7 is made to be connected, circuit turn-on, light emitting diode I 8 is given out light, and signal projector 10 sends out signal, is led to
It crosses wireless transmission 17 and is sent to alarm system 18, signal receiver 12 is connected, and the circuit of alarm system 18 is connected, and buzzer is caused
14 sounding, light emitting diode II 13 shine etc. a series of alarms, to achieve the purpose that infusion alarming.
The utility model is suitable for the infusion bottle of various rules, when the liquid level of infusion bottle passes through the utility model induction zone,
Warning circuit is triggered since the medium between capacitor plate changes, light emitting diode is lit, buzzer sounding alarm, medical care people
Member can timely processing.To reduce the burden of patient and entourage, unnecessary danger can be effectively prevented from.
Specific embodiment of the utility model is explained in detail above in conjunction with attached drawing, but the utility model and unlimited
In above-described embodiment, within the knowledge of a person skilled in the art, the utility model can also not departed from
It is made a variety of changes under the premise of objective.
Claims (2)
1. a kind of wireless transfusion alarm device based on capacitance sensor, it is characterised in that：Including warning clip and alarm system
（18）, warning clip is clamped in medical infusion bottle（19）Bottleneck, alarm system（18）Mounted on medical worker operating room, warning clip
With alarm system（18）It is wirelessly connected, warning clip includes：Fixture（1）, electrode plate（3）, circuit board（2）, fixture（1）The two of inside
While posting electrode plate（3）, circuit board（2）It is fixed on fixture（1）One end, circuit board（2）Inside it is integrated with power supply I（4）, capacitance opens
It closes（6）, switch（5）, triode（7）, signal projector（10）, light emitting diode I（8）, power supply II（9）, protective resistance（11）,
Power supply I（4）, capacitance switch（6）, switch（5）Concatenation forming circuit, electrode plate（3）With capacitance switch（6）Connection, capacitance switch
（6）While and triode（7）Base stage connection, triode（7）Collector successively with protective resistance（11）, signal projector
（10）, power supply II（9）, light emitting diode I（8）Cathode be serially connected, light emitting diode I（8）Anode and triode（7）
Emitter connection, alarm system（18）Including the signal receiver being serially connected（12）, power supply III（15）, light emitting diode
Ⅱ（13）, buzzer（14）, signal receiver（12）With signal projector（10）It is wirelessly connected.
2. a kind of wireless transfusion alarm device based on capacitance sensor according to claim 1, it is characterised in that：It is described
Fixture（1）The maximum spacing of inside is 2cm, fixture（1）Thickness be less than or equal to 18mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721279303.7U CN207950265U (en) | 2017-09-30 | 2017-09-30 | A kind of wireless transfusion alarm device based on capacitance sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721279303.7U CN207950265U (en) | 2017-09-30 | 2017-09-30 | A kind of wireless transfusion alarm device based on capacitance sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207950265U true CN207950265U (en) | 2018-10-12 |
Family
ID=63724436
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721279303.7U Expired - Fee Related CN207950265U (en) | 2017-09-30 | 2017-09-30 | A kind of wireless transfusion alarm device based on capacitance sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207950265U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110711290A (en) * | 2019-10-11 | 2020-01-21 | 罗云汉 | Infusion liquid medicine detecting system |
-
2017
- 2017-09-30 CN CN201721279303.7U patent/CN207950265U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110711290A (en) * | 2019-10-11 | 2020-01-21 | 罗云汉 | Infusion liquid medicine detecting system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102284105A (en) | Infusion alarm device | |
| CN207950265U (en) | A kind of wireless transfusion alarm device based on capacitance sensor | |
| CN103903377A (en) | Human body approaching microwave induction alerting device | |
| CN203619997U (en) | Circuit capable of automatically detecting residual amount of liquid of transfusion device and alarming | |
| CN103007392A (en) | Intravenous infusion warning device | |
| CN203815973U (en) | Infusion medicine-changing automatic reminding device | |
| CN204951825U (en) | Automatic alarm for infusion | |
| CN203447581U (en) | Infusion alarm | |
| CN204288409U (en) | A kind of burglar alarm | |
| CN202225607U (en) | Intelligent sensing pen | |
| CN103908709B (en) | A kind of nursing warning device | |
| CN201867943U (en) | Reminding device for preventing human body from being fatigue | |
| CN207237043U (en) | A kind of wireless warning clip for transfusion based on capacitance sensor | |
| CN207458542U (en) | Help to find the LED display of article in the dark | |
| CN210183615U (en) | Human body infrared induction control ultraviolet lamp | |
| CN202331691U (en) | Four-route bridge type wired monitoring device | |
| CN201586268U (en) | Transfusion alarm | |
| CN208255435U (en) | A kind of lavatory squatting position monitoring control circuit | |
| CN205515803U (en) | Pressure sensing alarm of infusing | |
| CN203874215U (en) | Automatic transfusion alarm device provided with electronic detection element | |
| CN2703531Y (en) | Acoustic-light automatic alarm for infusion of hanging bottle | |
| CN201113947Y (en) | Thermal release infra-red ray delay switch | |
| CN205246197U (en) | Luminous healthy balance | |
| CN215504787U (en) | Multifunctional medical infusion detection device | |
| CN204307154U (en) | A kind of infusion alarm |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181012 Termination date: 20190930 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |