CN2393553Y

CN2393553Y - Dropping flow monitor

Info

Publication number: CN2393553Y
Application number: CN 98204150
Authority: CN
Inventors: 王宇睦
Original assignee: CHUANGHONG SCIENCE AND TECHNOLOGY Co Ltd
Current assignee: CHUANGHONG SCIENCE AND TECHNOLOGY Co Ltd
Priority date: 1998-04-29
Filing date: 1998-04-29
Publication date: 2000-08-30
Anticipated expiration: 2008-04-29

Abstract

The utility model relates to a dropping flow monitor, which comprises a fixed member which clamps a transparent pipeline to be detected, a detection device, a flow computing unit and a control device. The detection device comprises a light transmitter and a light detector which are positioned in the fixed member, and the light of the light transmitter is blocked by liquid drop, so that the light detector generates signal change. The flow computing unit converts the signals to corresponding pulse signals according to the signal change and computes the quantity of the pulse signals in a unit time to generate flow signals corresponding to the flow. The control device can input a setting value, and compares the flow signals with the setting value to generate a control signal, so a warning device is controlled according to the control signal. With simple use and low cost, the utility model is the dropping flow monitor which can provide warning after the injection is finished.

Description

Drop flux detecting device

This utility model relates to a kind of drop flux detecting device.

Because the cause of disease, some sufferers need be carried out fluid infusion, and for example the injectable dextrose monohydrate drop waits disease controlling.One bottle of this kind fluid infusion approximately needs about 2 hours time, and the time be not quite fixing, fully according to the speed decision of drop drippage.Because the time is longer, sufferer enters sleep state easily, if do not have relatives or medical personnel to note at any time, often causes fluid infusion to finish and the situation of the drop switch not cutting out, if in the air admission patient body, must cause harmful effect to sufferer.

The purpose of this utility model provides a kind of use drop flux detecting device simply and cheaply.

Another purpose of the present utility model a kind of flow that provides is provided indicates, and after injection finishes, provides the drop flux detecting device of acousto-optic warning.

The purpose of this utility model is achieved in that a kind of drop flux detecting device, it has a signal processing unit, it is characterized in that: a fixed component is clamped on the transparent pipeline of detected dropper, it also comprises the flow rate calculation unit in checkout gear and the signal processing unit, checkout gear comprises optical transmitting set and the photodetector that is positioned at described fixed component, the input of the input connection control circuit of flow rate calculation unit, optical transmitting set and photodetector in the signal processing unit, control circuit is exported the showing device of receiving a crime report.

Described optical transmitting set can be light emitting diode; Described alarming device is a buzzer; Described flow rate calculation unit comprises and converts Light detector signals to the converting unit of corresponding pulse signal and the counting unit of the pulse signal quantity that unit of account was produced in the time; Control unit in the described signal processing unit comprises the comparing unit of the flow value of comparison of aforementioned and the upper lower limit value that setup unit sets and sets the setup unit of the bound of flow size.

This utility model utilizes a clipping fixed component checkout gear to be configured on the transparent pipeline of desire detection, and the speed that drips according to drop with the detection checkout gear has or not the generation signal to change, and signal is passed to the flow rate calculation unit.After this flow rate calculation unit becomes corresponding flow value with this conversion of signals, show for display device, for medical personnel or related personnel's reference.This flow value also offers control circuit.So as to sending corresponding control signal according to the upper lower limit value that sets.This control signal comes to handle to notify medical personnel or related personnel for connecting alarming device.

This utility model is simple in structure, and production cost is lower, and has sound and light alarm, and prompting is obviously used very convenient.

Specify the technical solution of the utility model below in conjunction with accompanying drawing and most preferred embodiment of the present utility model.

Fig. 1 is this utility model drop flux detecting schematic representation of apparatus.

Fig. 2 is the control circuit block chart of this utility model drop flux detecting device.

Fig. 3 is the sketch map of the fixed component of this utility model drop flux detecting device.

As shown in Figure 1, this utility model drop flux detecting device can be used for detecting the flow size of drop.This flux detecting device comprises fixed component 10, checkout gear 20, signal processing unit 30.Fixed component 10 is fixed on method of clamping on the transparent pipeline of desire detection, for example the dropper of drop.This fixed component 10 can cooperate different droppers and form different shapes, preferably is fixed on the dropper in the mode of seizing on both sides by the arms, and other fixable modes also can certainly.Comprise checkout gear 20 in the fixed component 10, the signal of this checkout gear 20 is connected in lead-out terminal 11, for example earphone jack.Utilize the connection lead 12 of a tool headset plug signal of lead-out terminal 11 can be connected to signal processing unit 30.

As shown in Figure 1, checkout gear 20 is positioned at fixed component 10, in order to detect the state that drop passes through.This checkout gear 20 comprises optical transmitting set 21 and photodetector 22.As shown in the figure, optical transmitting set 21 all has two signal line with photodetector 22 and since wherein one be earth lead, so can be connected together, utilize general earphone socket can connect the signal of this optical transmitting set 21 and photodetector 22.Utilize optical transmitting set 21 emissions one light, this light is radiated on the photodetector 22 after passing dropper.Because when drop passed through dropper, the light that passes this dropper can change, photodetector 22 produces different output valve A1 because of the light that receives different brightness.Wherein, optical transmitting set 21 can be light emitting diode (LED), and photodetector 22 can be photoconductive resistance.

As shown in Figure 2, signal processing unit 30 comprises flow rate calculation unit 31, control unit 32, display unit 33 and caution unit 34.The output valve A1 of the photodetector 22 of these signal processing unit 30 receiving detection devices 20, and convert this output valve A1 nationality to flow signal A2 by flow rate calculation unit 31, nationality produces control signal A3 by control unit 32, and shows control and flow data by display unit 33.Flow rate calculation unit 31 comprises converting unit 311 and counting unit 312, its function is to utilize converting unit 311 that the pass through voltage that produced or the electric current of photodetector 22 because of drop changed and convert corresponding pulse signal to, utilize the pulse signal that is produced in the 312 computing unit times of counting unit again, can obtain relative flow size.Utilize light emitting diode (LED) 21 to launch light at checkout gear 20, as visible light, utilize photodetector (CDS) 22 to receive light again.By the different resistance value that photodetector 22 produces for different light intensities, converting unit 311 utilizes the electric resistance partial pressure principle to produce relative change in voltage at an end of photodetector 22.Behind electric capacity isolated DC composition, utilize operational amplifier the change in voltage of sensor 22 can be converted to corresponding pulse signal again.

Can be about counting unit 312 by a set of counters, time cycle generator and buffer are formed.Utilize that enumerator calculates that aforementioned operational amplifier produces the quantity of pulse signal, the triggering signal of utilizing time cycle generator time per unit to send is again sent the value of enumerator and enumerator is made zero, again counting.The value that this enumerator is sent after triggering is relative flow value A2, and is stored in the buffer for each unit use described later.

Control unit 32 produces necessary control signal according to aforesaid flow value A2.This control unit 32 comprises comparing unit and setup unit.Setup unit is by the bound of user setting flow size, if flow greater than the upper limit or less than lower limit, then produces relative control signal.Comparing unit is the flow value A2 of comparison of aforementioned and the upper lower limit value that setup unit sets then.If exceed the upper limit or less than lower limit, then produce control signal A3,34 of alarming devices produce caution according to this control signal A3.This alarming device 34 can be buzzer, so as to also warning sound according to control signal A3, notifies medical personnel to come to handle.This alarming device 34 also can be directly connected to dispensary, utilizes existing caution system, notifies medical personnel to come to handle.

Because general medical personnel mostly are to adjust speed by rule of thumb in visual mode when adjusting the drop flow, cause speed inappropriate so easily.Therefore utilize display unit 33 to show that with numeral relative flow size is for medical personnel's reference.This display unit 33 is general character display, and the aforementioned flow value A2 data that is stored in buffer is shown.

See also Fig. 3, it has shown the essential structure of fixed component 10.This fixed component 10 comprises two groups of roughly the same shells 14,15, and shell 14,15 can be by general link rotatably combinations such as (not shown).Each shell all has the groove that cooperates dropper 5 external forms, when shell 14,15 in conjunction with the time, dropper 5 can be seized on both sides by the arms in fixed component 10 inboards.In addition, shell 14,15 also has general fastening component 13,13 ', with two shells in conjunction with the time fasten mutually, shell can arbitrarily not separated.Wherein one group of body also has the reception room of optical transmitting set 21 and photodetector 22.So that optical transmitting set 21 and photodetector 22 are configured in the fixed component 10, to carry out the dropping liquid flow detection.This optical transmitting set 21 is connected to a socket 11 with the lead of photodetector 22, as earphone socket, to utilize the lead 12 that connects this socket detection signal is connected to signal processing unit 30.

When using this fixed component 10, at first shell was opened state as shown in Figure 3 in 14,15 minutes.Afterwards, again fixed component 10 is clamped dropper 5 with the appropriate location, and closed shell 14,15, utilize fastening component 13,13 ' to fasten again, this fixed component 10 can be fixed on the transparent pipeline of desire detection.Utilizing lead 12 to connect processing unit 30 can begin to detect with this fixed component 10.

Claims

1, a kind of drop flux detecting device, it has a signal processing unit, it is characterized in that: a fixed component is clamped on the transparent pipeline of detected dropper, it also comprises the flow rate calculation unit in checkout gear and the signal processing unit, checkout gear comprises optical transmitting set and the photodetector that is positioned at described fixed component, the input of the input connection control circuit of flow rate calculation unit, optical transmitting set and photodetector in the signal processing unit, control circuit is exported the showing device of receiving a crime report.

2, according to the described drop flux detecting of claim 1 device, it is characterized in that: described optical transmitting set can be light emitting diode.

3, according to the described drop flux detecting of claim 1 device, it is characterized in that: described alarming device is a buzzer.

4, according to the described drop flux detecting of claim 1 device, it is characterized in that: described flow rate calculation unit comprises and converts Light detector signals to the converting unit of corresponding pulse signal and the counting unit of the pulse signal quantity that unit of account was produced in the time.

5, according to the described drop flux detecting of claim 1 device, it is characterized in that: the control unit in the described signal processing unit comprises the comparing unit of the flow value of comparison of aforementioned and the upper lower limit value that setup unit sets and sets the setup unit of the bound of flow size.