CN204766862U - Differential type photoelectricity infusion alarm device - Google Patents
Differential type photoelectricity infusion alarm device Download PDFInfo
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- CN204766862U CN204766862U CN201520469297.6U CN201520469297U CN204766862U CN 204766862 U CN204766862 U CN 204766862U CN 201520469297 U CN201520469297 U CN 201520469297U CN 204766862 U CN204766862 U CN 204766862U
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Abstract
The utility model relates to a differential type photoelectricity infusion alarm device belongs to medical instrument technical field. Including light source, photoelectric receiver, singlechip and buzzer, wherein light source and photoelectric receiver place respectively in the both sides of infusion hose, and two photoelectric receiver's output is continuous with the input of singlechip respectively, and the output of singlechip links to each other with the buzzer input. The utility model provides a differential type photoelectricity infusion alarm device has adopted differential methods of measurement, make the differential signal only with the infusion hose in refractive index of a medium relevant, and with the environment light intemsity variation, light disturbs and liquid colour variable has nothing to do, consequently, the environment light intemsity variation has been eliminated from the principle, the influence that light disturbed and liquid colour variable brings, sensitivity and reliability that the infusion was reported to the police have been increased substantially, the problem of had photoelectricity infusion alarm device easily to receive the wrong report that environmental disturbance and liquid colour variable brought and fail to report is solved.
Description
Technical field
This utility model relates to a kind of differential type photoelectric infusion alarm device, belongs to technical field of medical instruments.
Background technology
Venous transfusion is one of clinical common nursing procedure, situation of all-level hospitals has a large amount of patients to accept transfusion every day, due to the patient of China and the serious disproportion of medical personnel, the monitoring of transfusion progress is given patient or its entourage by nurse usually, when infusing close completing, patient or its entourage call out medical personnel and pull out pin in time or change dressings, otherwise transfusion droplet sky, air embolism and blood back will be caused to solidify the generation of the mistake and accidents such as injection again.Because transfusion time is mostly longer, people is easily made to produce anxiety and fatigue by the long-time monitoring transfusion progress of eyes, if patient and its entourage select sleep because of tired or boring, reading is read newspaper or listened to the music with earphone, often can not infuse and cause malpractice and doctor-patient dispute by Timeliness coverage, having brought unnecessary misery and trouble to patient.
In order to the generation preventing a transfusion sky, air embolism, blood back from solidifying the mistake and accidents such as injection again, reduce the transfusion nursing working strength of medical worker, avoid the unnecessary participation of patient and entourage thereof simultaneously, alleviate patient's nervous and fatigue in infusion process
,patient can be had a rest fully during infusing, people's utility model various transfusion alarm method automatic monitoring transfusion progress, when transfusion completes, sends alarm signal immediately, prompting medical personnel pull out pin in time or change dressings, and avoid the malpractice caused because of transfusion mistake to occur.
The operation principle of existing photoelectric infusion alarm device is: place a luminescent device and a photelectric receiver respectively in the both sides of infusion tube, as shown in Figure 1, in Fig. 1,1 be luminescent device, 2 are infusion tubes, 3 are photelectric receivers, 4 are signal processing circuits, 5 is buzzers.Utilize the difference of aqueous solution and air refraction in infusion tube, judge whether transfusion completes.When there being liquid in infusion tube, liquid in infusion tube 2 is equivalent to a cylindrical lens, the light focusing sent by luminescent device 1 is on photelectric receiver 3, the light intensity that photelectric receiver 3 receives is larger, photelectric receiver exports larger electric current, judges size of current, when electric current is greater than the threshold value of setting by signal processing circuit 4, not output alarm signal, buzzer 5 can not send alarm sound; When there is no liquid in infusion tube, air in infusion tube does not produce refraction effect, the light that luminescent device sends only has sub-fraction to project on photelectric receiver, the light intensity that photelectric receiver 3 receives is more weak, photelectric receiver exports very little electric current, signal processing circuit 4 judges that electric current is less than the threshold value of setting, output alarm signal, and buzzer 5 sends alarm sound.
The light intensity signal change that existing photoelectric infusion alarm method utilizes photelectric receiver to receive judges whether transfusion completes, be vulnerable to the impact that environmental light intensity change (daytime, night), light interference (turn on light, turn off the light) and liquid color (light transmittance) change, very easily occur wrong report, fail to report phenomenon, reliability is lower.
Utility model content
The purpose of this utility model is the weak point for overcoming prior art, a kind of differential type photoelectric infusion alarm device is proposed, adopt two photelectric receivers receptions by the light intensity signal of infusion tube, the differential wave exported by two photelectric receivers (differences of two photelectric receiver output signals) is as infusion alarming signal.Because environmental disturbances (light intensity changed, turns on light, turned off the light day and night) is identical on the impact of two photelectric receivers with liquid color change, therefore differential wave eliminates environmental light intensity change from measuring principle, light disturbs and liquid color changes the interference brought.
The differential type photoelectric infusion alarm device that the utility model proposes, this alarm device comprises the light source and a photelectric receiver that are arranged on infusion tube both sides relative position, the signal processor be connected successively with photelectric receiver outfan and a buzzer; It is characterized in that, also comprise the second photelectric receiver, this second photelectric receiver and the first photelectric receiver are positioned at infusion tube homonymy and between the upper and lower every setting, the outfan of two photelectric receivers is connected with the input of single-chip microcomputer respectively, and the outfan of single-chip microcomputer is connected with buzzer input;
Feature of the present utility model and beneficial effect:
The differential type photoelectric infusion alarm device that the utility model proposes have employed differential measuring apparatus and adopts two photelectric receivers receptions by the light intensity signal of infusion tube, and the differential wave exported by two photelectric receivers (differences of two photelectric receiver output signals) is as infusion alarming signal.The measuring method of this device makes differential wave only relevant with the refractive index of infusion tube medium, and change with environmental light intensity, light disturbs and liquid color changes irrelevant, therefore eliminate environmental light intensity change, light interference and liquid color from principle and change the impact brought, increase substantially sensitivity and the reliability of infusion alarming, solved existing photoelectric infusion alarm device and be subject to environmental disturbances and liquid color and change the wrong report that brings and fail to report problem.
Accompanying drawing explanation
Fig. 1 is existing photoelectric infusion alarm device principle schematic.
Fig. 2 is the differential type photoelectric infusion alarm device principle schematic that the utility model proposes.
In Fig. 1 and Fig. 2,1 is light source, and 2 is transparent infusion tubes, and 3 is photelectric receivers, and 4 is signal processing circuits, and 5 is buzzers, and 6 is liquid, and 7 is single-chip microcomputers.
Detailed description of the invention
A kind of differential type photoelectric infusion alarm device that the utility model proposes by reference to the accompanying drawings and embodiment be described as follows:
The differential type photoelectric infusion alarm device that the utility model proposes, this alarm device comprises the light source and a photelectric receiver that are arranged on infusion tube both sides relative position, the signal processor be connected successively with photelectric receiver outfan and a buzzer; It is characterized in that, also comprise the second photelectric receiver, this second photelectric receiver and the first photelectric receiver are positioned at infusion tube homonymy and between the upper and lower every setting, the outfan of two photelectric receivers is connected with the input of single-chip microcomputer respectively, and the outfan of single-chip microcomputer is connected with buzzer input.
As shown in Figure 2, this device comprises the differential type photoelectric infusion alarm device embodiment that the utility model proposes:
Two light sources 1, carry out Uniform Illumination to infusion tube 2, to improve the signal to noise ratio that photelectric receiver 3 outputs signal;
Two photelectric receivers 3, receive the illumination intensity by infusion tube 2, optical signal are converted to the signal of telecommunication, and send the signal of telecommunication to single-chip microcomputer 7;
Single-chip microcomputer 7, for the electrical signal that Real-time Collection photelectric receiver 3 exports, and calculates the difference DI of two photelectric receiver output signals, can count in infusion tube differential wave meansigma methods DI when having liquid
a; As the differential wave meansigma methods DI that differential wave is greater than 5 times
atime, judge that transfusion is near completion, single-chip microcomputer 7 is the waveform of 2000Hz from its PWM (PulseWidthModulation) pulse width modulation mouth output frequency, and Direct driver buzzer is sounded alarm signal;
Buzzer 5, as microphone device, under the driving that the PWM mouth of single-chip microcomputer 7 outputs signal, periodically vibrates alarm signal of sounding.
In the differential type photoelectric infusion alarm device that the utility model proposes:
Light source 1 adopts the TLN107 infrarede emitting diode LED of Toshiba Corp;
Photelectric receiver 3 adopts 3DU111 silicon phototriode
Single-chip microcomputer 7 adopts 80196 single-chip microcomputers of Intel Company; Single-chip microcomputer also can adopt the signal processing circuit be made up of TTL (Transister-Transister-Logic) electronic component to realize.
Buzzer 5 adopts diameter to be the separated exciting piezoelectric buzzer of Ф 16mm.
The operation principle of above-mentioned differential type photoelectric infusion alarm device:
Light source carries out Uniform Illumination to infusion tube; When there being liquid in infusion tube, the refractive index due to aqueous solution is 1.333, and the liquid therefore in infusion tube is equivalent to a cylindrical lens, and the light focusing that light source can be sent is on photelectric receiver, and the light intensity that photelectric receiver 3 receives is larger; When not having liquid in infusion tube, the refractive index of air is 1, and the air therefore in infusion tube does not produce refraction effect, and the light that light source sends only has sub-fraction to project on photelectric receiver 3, and the light intensity that photelectric receiver 3 receives is more weak.
When normal infusion, be full of liquid in infusion tube, the output signal of two photelectric receivers is substantially identical, and differential wave is zero.
When transfusion will complete, liquid level in infusion tube declines gradually, when liquid level lower than first photelectric receiver, higher than second photelectric receiver time, because air is different from the refractive index of liquid, the output of two photelectric receivers has greatly changed, differential wave can suddenly become large, and the square-wave signal Direct driver buzzer that single-chip microcomputer exports certain frequency is sounded alarm signal, and prompting medical personnel prepare pull out pin or change dressings.
Differential wave as alarm signal, not only can be improved sensitivity and the reliability of infusion alarming by this device, but also can eliminate environmental light intensity change, light interference and liquid color change the interference brought.
In sum, this utility model improves existing photoelectric infusion alarm device, make the change of detection signal only relevant with the medium refraction index in infusion tube, and have nothing to do with environmental disturbances and liquid light transmittance, therefore overcome existing photoelectric infusion alarm method responsive to environmental disturbances and liquid light transmittance, easily there is the problem reporting by mistake, fail to report.Differential type photoelectric infusion alarm device of the present utility model not by the impact that environmental light intensity change, light interference and liquid color change, has very high sensitivity and reliability, has practical extending application value in principle.
Claims (2)
1. a differential type photoelectric infusion alarm device, this alarm device comprises the light source and a photelectric receiver that are arranged on infusion tube both sides relative position, the signal processor be connected successively with photelectric receiver outfan and a buzzer; It is characterized in that, also comprise the second photelectric receiver, this second photelectric receiver and the first photelectric receiver are positioned at infusion tube homonymy and between the upper and lower every setting, the outfan of two photelectric receivers is connected with the input of single-chip microcomputer respectively, and the outfan of single-chip microcomputer is connected with buzzer input.
2. differential type photoelectric infusion alarm device as claimed in claim 1, it is characterized in that, described light source adopts two TLN107 infrarede emitting diode LED, described two photelectric receivers adopt 3DU111 silicon phototriode, described signal processor adopts 80196 single-chip microcomputers, and described buzzer employing diameter is the separated exciting piezoelectric buzzer of Ф 16mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520469297.6U CN204766862U (en) | 2015-06-28 | 2015-06-28 | Differential type photoelectricity infusion alarm device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520469297.6U CN204766862U (en) | 2015-06-28 | 2015-06-28 | Differential type photoelectricity infusion alarm device |
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| CN204766862U true CN204766862U (en) | 2015-11-18 |
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| CN201520469297.6U Active CN204766862U (en) | 2015-06-28 | 2015-06-28 | Differential type photoelectricity infusion alarm device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106730154A (en) * | 2016-12-13 | 2017-05-31 | 安徽乐年健康养老产业有限公司 | A kind of automatic infusion monitor with alarm and method |
| CN108785799A (en) * | 2017-05-03 | 2018-11-13 | 中兴通讯股份有限公司 | Alarm processing method, device, storage medium and processor |
-
2015
- 2015-06-28 CN CN201520469297.6U patent/CN204766862U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106730154A (en) * | 2016-12-13 | 2017-05-31 | 安徽乐年健康养老产业有限公司 | A kind of automatic infusion monitor with alarm and method |
| CN108785799A (en) * | 2017-05-03 | 2018-11-13 | 中兴通讯股份有限公司 | Alarm processing method, device, storage medium and processor |
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