CN203634576U - Infrared infusion alarming device - Google Patents
Infrared infusion alarming device Download PDFInfo
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- CN203634576U CN203634576U CN201420008306.7U CN201420008306U CN203634576U CN 203634576 U CN203634576 U CN 203634576U CN 201420008306 U CN201420008306 U CN 201420008306U CN 203634576 U CN203634576 U CN 203634576U
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- infusion
- infusion alarm
- infrared ray
- resistance
- chip microcomputer
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Abstract
The utility model discloses an infrared infusion alarming device which comprises infusion alarms and display equipment. The infusion alarms are installed on various infusion sets and are respectively in signal connection with the display equipment. Each infusion alarm comprises a single-chip microcomputer, an infrared sensing device and an infusion tube compressing device, wherein the infusion tube compressing device is connected with a step motor, and the infrared sensing device comprises an infrared transmitting tube and a receiving sensor which are correspondingly arranged on two sides of a Murphy's dropper of each infusion set. The infrared sensing devices are in signal connection with the single-chip microcomputer through a voltage comparator, and the single-chip microcomputer is in control connection with the step motor. The infrared infusion alarming device is simple in structure and capable of simultaneously monitoring infusion statuses of various infusion sites, so that work intensity of medical staff is alleviated, infusion can be automatically stopped when liquid medicine is completely infused, and medical accidents caused by negligence is avoided.
Description
Technical field
This utility model relates to armarium and manufactures field, especially refers to a kind of infrared ray infusion alarm.
Background technology
At present, the ubiquity medical personnel of the medical institutions work loads such as hospital of China, clinic weigh, are difficult to process in time the phenomenon of some demand of patient, and hospital is for cost consideration or because advertising for workers difficult reason, causes medical personnel's lazy weight.
In medical institutions, the monitoring of venous transfusion is generally adopted to manual type now, whether medical personnel want patrolling and examining of variable interval, reasonable to determine transfusion speed, and whether transfusion closes to an end.But serve because medical personnel need several transfusion persons simultaneously, in some big cities, medical personnel's work load is heavy especially, and medical personnel will serve tens sometimes, or even tens patients.Medical personnel in the course of the work cannot be with respect to all transfusion persons, again because patient is original and entourage's carelessness, easily cause and do not change in time medicinal liquid or the situation about having finished and do not find in time of infusing, light incur loss through delay patient's treatment, heavy serious malpractice occurs, the life security that even jeopardizes patient.
In order to eliminate above-mentioned potential safety hazard, monitor if can help medical personnel by supplementary instrument, can alleviate medical personnel's labor intensity, reduce medical personnel's proportioning number.At present, on the market similar medical device product exist backward in technique, use the drawbacks such as inconvenient or expensive.
Summary of the invention
Technical problem to be solved in the utility model is the present situation for prior art, provides simple in structure, easy to use, with low cost, can monitor each a kind of infrared ray infusion alarm for the also timely stopping infusion of transfusion situation of infusing.
This utility model solves the problems of the technologies described above adopted technical scheme:
A kind of infrared ray infusion alarm, comprise the infusion alarm and the display device that are installed on each transfusion device, infusion alarm is connected with display device signal respectively, wherein, the tube for transfusion compressor that infusion alarm includes single-chip microcomputer, infrared ray sensing device and is connected with motor, infrared ray sensing device comprises that correspondence is arranged at infrared transmitting tube and the receiving sensor of the Murphy's burette both sides of each transfusion device, infrared ray sensing device is connected with single-chip microcomputer signal through voltage comparator, and single-chip microcomputer is connected with step motor control.
The technical measures of optimizing also comprise:
Above-mentioned receiving sensor is connected on testing circuit, this testing circuit is made up of operational amplifier and comparator, one end of receiving sensor is connected with the reverse input end of operational amplifier, its other end is connected with the positive input of operational amplifier through resistance R 4, and the outfan of operational amplifier is connected with the comparative voltage input of comparator.
Above-mentioned testing circuit is connected with voltage comparator through de-twitter circuit, biquadratic band pass filter circuit, phase sensitive detection circuit, low-pass filter circuit.
In above-mentioned infusion alarm, be equipped with lithium battery, be provided with charging inlet on infusion alarm, charging inlet is connected by charging circuit with lithium battery.
Above-mentioned charging circuit comprises PNP audion T1, NPN audion T2, diode D1, Zener diode D2, light emitting diode D3, resistance R 1, resistance R 2 and resistance R 3;
The emitter stage of PNP audion T1 is connected with the positive pole of power supply, series resistance R1 between the base stage of PNP audion T1 and the negative pole of lithium battery, the positive pole of lithium battery is connected with the positive pole of power supply, diode D1 is connected between the emitter stage and base stage of PNP audion T1, contact resistance R2, Zener diode D2, light emitting diode D3 successively between the colelctor electrode of PNP audion T1 and the negative pole of power supply;
The colelctor electrode of NPN audion T2 is connected with the negative pole of lithium battery, and the base stage of NPN audion T2 is connected with resistance R 2, between the emitter stage of NPN audion T2 and the negative pole of power supply, is connected with resistance R 3.
Between the positive pole of above-mentioned lithium battery and the positive pole of power supply, be provided with charge switch S1, between the positive pole of lithium battery and infrared ray sensing device, be provided with operating switch S2.
Above-mentioned single-chip microcomputer is AT89C51 single-chip microcomputer.
Above-mentioned infusion alarm is connected with display device wireless transmission.
A kind of infrared ray infusion alarm of the present utility model, adopt the transfusion situation of each transfusion point of infrared ray sensing device monitoring, monitor signal is passed to single-chip microcomputer through voltage comparator, single-chip microcomputer judges according to signal whether transfusion finishes, once judgement transfusion finishes, single-chip microcomputer sends control signal control step electric motor starting, thereby promotes tube for transfusion compressor compression tube for transfusion stopping infusion, sends signal to display device simultaneously and points out medical worker.This infrared ray infusion alarm is simple in structure, and it can monitor the transfusion situation that each transfusion is put simultaneously, alleviates medical worker's working strength; Can automatic stopping infusion in the time that transfusion finishes, avoid the malpractice causing because of carelessness.
Receiving sensor is connected on testing circuit, and testing circuit is made up of operational amplifier and comparator, can calculate dropping liquid number per minute according to the Voltage-output situation of comparator, makes medical worker can grasp better the situation of transfusion.
Brief description of the drawings
Fig. 1 is frame construction drawing of the present utility model;
Fig. 2 is charging circuit figure of the present utility model;
Fig. 3 is infrared ray sensing device of the present utility model and testing circuit figure;
Fig. 4 is de-twitter circuit figure of the present utility model;
Fig. 5 is biquadratic band pass filter circuit figure of the present utility model;
Fig. 6 is phase sensitive detection circuit figure of the present utility model;
Fig. 7 is low-pass filter circuit figure of the present utility model;
Fig. 8 is the connection layout of voltage comparator of the present utility model and single-chip microcomputer.
Detailed description of the invention
Below in conjunction with accompanying drawing, embodiment is described in further detail this utility model.
Structural representation of the present utility model as shown in Figure 1 to Figure 8 shows the,
Reference numeral is wherein: infusion alarm 1, display device 2, single-chip microcomputer 3, infrared ray sensing device 4, infrared transmitting tube 41, receiving sensor 42, motor 5, tube for transfusion compressor 51, voltage comparator 6, testing circuit 7, operational amplifier 71, comparator 72, de-twitter circuit 73, biquadratic band pass filter circuit 74, phase sensitive detection circuit 75, low-pass filter circuit 76, transfusion device 8, Murphy's burette 81, lithium battery 9.
As shown in Figures 1 to 8,
A kind of infrared ray infusion alarm, comprise the infusion alarm 1 and the display device 2 that are installed on each transfusion device 8, infusion alarm 1 is connected with display device 2 signals respectively, wherein, infusion alarm 1 includes single-chip microcomputer 3, infrared ray sensing device 4 and the tube for transfusion compressor 51 being connected with motor 5, infrared ray sensing device 4 comprises that correspondence is arranged at infrared transmitting tube 41 and the receiving sensor 42 of Murphy's burette 81 both sides of each transfusion device 8, infrared ray sensing device 4 is connected with single-chip microcomputer 3 signals through voltage comparator 6, single-chip microcomputer 3 and motor 5 control connections.
In embodiment, receiving sensor 42 is connected on testing circuit 7, this testing circuit 7 is made up of operational amplifier 71 and comparator 72, one end of receiving sensor 42 is connected with the reverse input end of operational amplifier 71, its other end is connected with the positive input of operational amplifier 71 through resistance R 4, and the outfan of operational amplifier 71 is connected with the comparative voltage input of comparator 72.
In embodiment, testing circuit 7 is connected with voltage comparator 6 through de-twitter circuit 73, biquadratic band pass filter circuit 74, phase sensitive detection circuit 75, low-pass filter circuit 76.
As shown in Figure 3, the detection whether this device finishes liquid dropping speed and transfusion adopts correlation infrared electro formula sensor, it is made up of infrared transmitting tube 41 and the receiving sensor 42 of horizontal direction, infrared transmitting tube 41, receiving sensor 42 and drop are on same level straight line, when use, the Murphy's burette of disposable transfusion device 8 81 is placed on the test point of infrared ray sensing device 4, infrared transmitting tube 41 and receiving sensor 42 are arranged on respectively Murphy's burette 81 both sides.Receiving sensor 42, a PIN diode is always operating under the state of anti-phase bias voltage, when unglazed photograph, still have dark current to flow through, along with the increase of anti-phase bias voltage, dark current also will increase, and the dark current of general PIN diode is in nA magnitude, be that dark current is far longer than signal code, therefore should reduce dark current as far as possible.In order to reduce anti-phase bias voltage, in side circuit, PIN pipe is connected on to positive inverting input, utilize the feature of operational amplifier 71, bias voltage is approximately zero, and dark current is also reduced to minimum.
(1) extremely low input bias current: 150fA;
(2) input offset current: 50fA;
(3) input resistance reaches 10
13Ω, input capacitance 1pF;
(4) representative value of open-loop voltage gain in the time that load resistance is 10k Ω is
;
(5) input noise voltage is 35nV/ near 10kHz
, input noise electric current is 0.22nA/ at 1kHz
, frequency more Gao Shihui is less;
(6) the corresponding meeting of pass band reaches 1MHz.
In the time dripping in the mode of freely falling body under the effect of medicinal liquid at gravity, the Infrared that this drop sends infrared transmitting tube 41 produces barrier effect, and the voltage on receiving sensor 42 just produces corresponding variation.Because the β value of optocoupler receiving tube is larger, therefore change in voltage is also stronger, the signal of optocoupler output is passed to comparator LM358.Can, according to actual optocoupler output signal size, adjust the reference voltage of comparator, thereby realize the level conversion that irregular optocoupler signal is converted into voltage.The number of drops that just can draw drippage per minute with this, in the time drop not detected in the unit interval, illustrates that transfusion is near completion, and now sends alarm signal, and transfers to display device 2 at once.The process of a motion because drop drips, in this process, the intensity that infrared light is stopped by drop can change, and cause the shake of signal, therefore the Vout contact of testing circuit 7 has connected the primary de-twitter circuit being made up of NE555 73, as shown in Figure 4, the time constant filter of this circuit is S=1.1 × R11 × C3, is 110ms in Fig. 4.
The out1 contact of de-twitter circuit 73 connects biquadratic band pass filter circuit 74, the function of biquadratic band pass filter circuit 74 is that the output signal of the former amplifying circuit is carried out to rough bandpass filtering treatment, suppress and the interference of filtering part and noise section, only allow the sinusoidal fundamental wave signal of 1kHz square wave to pass through.Can think that band filter is to be in series by low pass filter and high pass filter, the passband that both cover provides a band-pass response.In Fig. 5,
,
.
The out2 contact of quadratic form band pass filter circuit 74 connects phase sensitive detection circuit 75, and the out3 contact of phase sensitive detection circuit 75 connects low-pass filter circuit 76.
Utilize with the restituted signal of the phase-locked relation of measured signal same frequency and compare (multiplying each other), only have response to measured signal itself with restituted signal with the noise component(s) of frequency or frequency multiplication, homophase.Therefore can suppress significantly noise, improve detectivity and signal to noise ratio, be the effective technology that small-signal is measured.
Because measured signal is very faint, and Noise and Interference is very strong, thus detected signal should amplify and Filtering Processing, with the Noise and Interference beyond filtering passband.The effect of reference signal be to provide one with input signal with square wave or sine wave frequently.The effect of phase sensitive detection is that input signal and reference signal are carried out to multiplying, thus obtain input signal and reference signal with frequently and difference frequency signal.The effect of follow-up low-pass filtering is filtering and frequency component, at this moment equivalent noise bandwidth is very narrow, suppress strongly input noise, input signal is after phase sensitive detection and low-pass filtering, change AC signal into direct current signal, direct current signal, after direct current amplifier amplifies, can meet the gain requirement of system.
The out4 contact of low-pass filter circuit 76 is connected with voltage comparator 6.After the signal processing circuit of several parts above, obtain an amplification, filtered signal.This signal is divided into two-way, one road signal is input to comparison circuit, when being greater than reference voltage, output voltage exports high potential certain time, represent infusion-completed, by a phase inverter, high level is converted to low level and is input to the middle broken ends of fractured bone of single-chip microcomputer 3, trigger and interrupt, enter the control step motor 5 regulating transfusion speed of interrupting, transfusion is stopped, and be sent on display device 2 and show by Radio Transmission Technology, remind medical personnel change dressings or pull out pin, thereby ensured patient's safety; An other road signal is input to analog-digital converter, then controls display device 2 and show transfusion speed through single-chip microcomputer 2, indicates current transfusion speed.
In embodiment, be equipped with lithium battery 9 in infusion alarm 1, on infusion alarm 1, be provided with charging inlet, charging inlet is connected by charging circuit with lithium battery 9.
In embodiment, charging circuit comprises PNP audion T1, NPN audion T2, diode D1, Zener diode D2, light emitting diode D3, resistance R 1, resistance R 2 and resistance R 3;
The emitter stage of PNP audion T1 is connected with the positive pole of power supply, series resistance R1 between the base stage of PNP audion T1 and the negative pole of lithium battery 9, the positive pole of lithium battery 9 is connected with the positive pole of power supply, diode D1 is connected between the emitter stage and base stage of PNP audion T1, contact resistance R2, Zener diode D2, light emitting diode D3 successively between the colelctor electrode of PNP audion T1 and the negative pole of power supply;
The colelctor electrode of NPN audion T2 is connected with the negative pole of lithium battery 9, and the base stage of NPN audion T2 is connected with resistance R 2, between the emitter stage of NPN audion T2 and the negative pole of power supply, is connected with resistance R 3.
In embodiment, between the positive pole of lithium battery 9 and the positive pole of power supply, be provided with charge switch S1, between the positive pole of lithium battery 9 and infrared ray sensing device, be provided with operating switch S2.
In order to economize on resources and protection of the environment, this infusion alarm 1 uses embedded rechargeable type lithium battery 9, and lithium battery 9 is contained in the inside of infusion alarm 1, and medical personnel can take off infusion alarm 1 and plug charger and charge.
Charging circuit as shown in Figure 2, this circuit connects inverse time circuit at battery and does not work, only have polarity connection to time just can charge normal.NPN audion T2, light emitting diode D3, Zener diode D2, resistance R 3 form continuous current source, and keeping charging current is 50mA all the time.Zener diode D2 and light emitting diode D3 make the base voltage of NPN audion T2 stable, also make resistance R 3 both end voltage stable simultaneously, are definite value thereby make through the electric current of resistance R 3.PNP audion T1, diode D1, resistance R 1 form polarity holding circuit, in the time of when battery pole back connection, and diode D1 conducting, PNP audion T1 ends because emitter junction is reverse-biased, and battery can not charge.Closed charge switch S1 in the time that needs charge, and disconnect the operating switch S2 of subsequent conditioning circuit.Be full of the operating switch S2 that opens charge switch S1 closed subsequent conditioning circuit after electricity and get final product work.
In embodiment, single-chip microcomputer 3 is AT88C51 single-chip microcomputer.
In embodiment, infusion alarm 1 is connected with display device 2 wireless transmission; Unnecessary connecting line has been avoided in wireless connections, makes equipment more simple.
Most preferred embodiment of the present utility model is illustrated, and the various variations of being made by those of ordinary skill in the art or remodeling can not depart from scope of the present utility model.
Claims (8)
1. an infrared ray infusion alarm, comprise the infusion alarm (1) and the display device (2) that are installed on each transfusion device (8), described infusion alarm (1) is connected with display device (2) signal respectively, it is characterized in that: described infusion alarm (1) includes single-chip microcomputer (3), infrared ray sensing device (4) and the tube for transfusion compressor (51) being connected with motor (5), described infrared ray sensing device (4) comprises that correspondence is arranged at infrared transmitting tube (41) and the receiving sensor (42) of the Murphy's burette of each transfusion device (8) (81) both sides, described infrared ray sensing device (4) is connected with single-chip microcomputer (3) signal through voltage comparator (6), described single-chip microcomputer (3) and motor (5) control connection.
2. a kind of infrared ray infusion alarm according to claim 1, it is characterized in that: described receiving sensor (42) is connected on testing circuit (7), this testing circuit (7) is made up of operational amplifier (71) and comparator (72), one end of described receiving sensor (42) is connected with the reverse input end of operational amplifier (71), its other end is connected with the positive input of operational amplifier (71) through resistance R 4, the outfan of described operational amplifier (71) is connected with the comparative voltage input of comparator (72).
3. a kind of infrared ray infusion alarm according to claim 2, is characterized in that: described testing circuit (7) is connected with voltage comparator (6) through de-twitter circuit (73), biquadratic band pass filter circuit (74), phase sensitive detection circuit (75), low-pass filter circuit (76).
4. a kind of infrared ray infusion alarm according to claim 1, it is characterized in that: in described infusion alarm (1), be equipped with lithium battery (9), on described infusion alarm (1), be provided with charging inlet, described charging inlet is connected by charging circuit with lithium battery (9).
5. a kind of infrared ray infusion alarm according to claim 4, is characterized in that: described charging circuit comprises PNP audion T1, NPN audion T2, diode D1, Zener diode D2, light emitting diode D3, resistance R 1, resistance R 2 and resistance R 3;
The emitter stage of PNP audion T1 is connected with the positive pole of power supply, series resistance R1 between the negative pole of the base stage of PNP audion T1 and lithium battery (9), the positive pole of lithium battery (9) is connected with the positive pole of power supply, diode D1 is connected between the emitter stage and base stage of PNP audion T1, contact resistance R2, Zener diode D2, light emitting diode D3 successively between the colelctor electrode of PNP audion T1 and the negative pole of power supply;
The colelctor electrode of NPN audion T2 is connected with the negative pole of lithium battery (9), and the base stage of NPN audion T2 is connected with resistance R 2, between the emitter stage of NPN audion T2 and the negative pole of power supply, is connected with resistance R 3.
6. a kind of infrared ray infusion alarm according to claim 5, it is characterized in that: between the positive pole of described lithium battery (9) and the positive pole of power supply, be provided with charge switch S1, between the positive pole of described lithium battery (9) and infrared ray sensing device, be provided with operating switch S2.
7. a kind of infrared ray infusion alarm according to claim 1, is characterized in that: described single-chip microcomputer (3) is AT88C51 single-chip microcomputer.
8. a kind of infrared ray infusion alarm according to claim 7, is characterized in that: described infusion alarm (1) is connected with display device (2) wireless transmission.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420008306.7U CN203634576U (en) | 2014-01-07 | 2014-01-07 | Infrared infusion alarming device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420008306.7U CN203634576U (en) | 2014-01-07 | 2014-01-07 | Infrared infusion alarming device |
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| CN203634576U true CN203634576U (en) | 2014-06-11 |
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| CN201420008306.7U Expired - Fee Related CN203634576U (en) | 2014-01-07 | 2014-01-07 | Infrared infusion alarming device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105013022A (en) * | 2015-07-08 | 2015-11-04 | 上海理工大学 | Mother-son type urine collection bag acousto-optic alarm apparatus |
| CN105126244A (en) * | 2015-08-30 | 2015-12-09 | 成都千里电子设备有限公司 | Low frequency therapeutic instrument protection circuit |
| CN106669044A (en) * | 2016-07-05 | 2017-05-17 | 深圳斯坦普光生物科技有限公司 | Human face infrared detection device and method for photonic beauty apparatus |
| CN109764939A (en) * | 2019-01-24 | 2019-05-17 | 湖北科技学院 | A kind of liquid level detection device and warning device of the luxuriant and rich with fragrance pot of ink |
-
2014
- 2014-01-07 CN CN201420008306.7U patent/CN203634576U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105013022A (en) * | 2015-07-08 | 2015-11-04 | 上海理工大学 | Mother-son type urine collection bag acousto-optic alarm apparatus |
| CN105126244A (en) * | 2015-08-30 | 2015-12-09 | 成都千里电子设备有限公司 | Low frequency therapeutic instrument protection circuit |
| CN106669044A (en) * | 2016-07-05 | 2017-05-17 | 深圳斯坦普光生物科技有限公司 | Human face infrared detection device and method for photonic beauty apparatus |
| CN109764939A (en) * | 2019-01-24 | 2019-05-17 | 湖北科技学院 | A kind of liquid level detection device and warning device of the luxuriant and rich with fragrance pot of ink |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140611 Termination date: 20180107 |
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| CF01 | Termination of patent right due to non-payment of annual fee |