CN2066307U

CN2066307U - Electronic spirometer

Info

Publication number: CN2066307U
Application number: CN 89209688
Authority: CN
Inventors: 尚超
Original assignee: LIAONIN PROV SPORTS SCIENCE INST
Current assignee: LIAONIN PROV SPORTS SCIENCE INST
Priority date: 1989-11-06
Filing date: 1989-11-06
Publication date: 1990-11-28

Abstract

The utility model provides an electronic spirometer which is composed of a pulse signal processing system composed of a blowing tube with a flowing air sensor and a display circuit with the shaping filter, the digital and analogy conversion and the computation. The utility model has high measuring precision, high speed, digital display, convenient operation and convenient carrying. When used, the electronic spirometer is not influenced by the environment temperature and the state that the instrument is placed. The tested person only needs to hold the blowing tube and blow to the nozzle. The utility model can simultaneously measure the vital capacity of the time when measuring the vital capacity. So the electronic spirometer can be widely used for the sports, the sanitation, the sport iatrology, the physical research and the body inspection field.

Description

Electronic spirometer

This utility model belongs to the checkout gear of a kind of human body vital capacity in fields such as being widely used in medical treatment, health, physical culture.

Existing spirometer generally adopts water as sealing surface, and the gas that is blown into changes volume of a container by the transmission of liquid, and measures the vital capacity of human body with the variable quantity of this volume.The float bowl-type spirometer that generally uses as present people, or swinging spirometer.Although this class spirometer is simple in structure, can bring inconvenience in actual use.Often volume is bigger as this class spirometer, thereby is not easy to be carried to on-the-spot the use; Next needs to inject the clear water close with ambient temperature before using, and makes instrument must be adjusted to level, and every survey once must reset the gas discharge; Once more, this class spirometer accepted scale scale reading, and this reading is subjected to the gas volume that is blown into and the error brought different with ambient temperature, thereby when test is except considering the temperature correction coefficient, also will consider factors such as level that instrument is put, in fact its test error reaches ± 100ml.

This utility model is based on the weak point of existing spirometer, and a kind of easy to use, a kind of spirometer that measuring accuracy is high is provided.

Electronic type spirometer provided by the utility model can be realized by following measure in order to achieve the above object: promptly this spirometer is made up of flowing gas pick off and Pulse Signal Processing System; wherein the flowing gas pick off is for being provided with the wind rotation mechanism of obscuring blade in the cylindrical shell that will be provided with air inlet and air vent; be positioned on the cylindrical shell of obscuring blade both sides light-emitting component and light-sensitive element be set respectively, the outfan of light-sensitive element with by shaping filter; digital-to-analogue converts; the input of the Pulse Signal Processing System that calculating and display circuit constitute is connected.

The spirometer that this utility model provides according to said structure is according to schematic diagram shown in Figure 1, described flowing gas pick off is along with being blown into the obscuring blade rotation of gas flow with the wind rotation mechanism, and along with the light that light-emitting component sends will be alternately cut in the rotation of obscuring blade, thereby light-sensitive element is transformed into pulse signal with the optical signal that obtains simultaneously and is input to Pulse Signal Processing System, finally demonstrates the vital capacity of being surveyed on display.Certainly, the revolution of obscuring blade is directly proportional with vital capacity.Wind rotation mechanism in the flowing gas pick off can be made up of air-flow directive wheel and obscuring blade, directive wheel and obscuring blade can be fixed on the same axle in the time of in being arranged at cylindrical shell, and obscuring blade and directive wheel are rotated synchronously; Also directive wheel can be fixed on the cylinder inboard wall, and obscuring blade is fixed on one, obscuring blade is rotated under the air-flow effect by directive wheel.As long as locus between obscuring blade and light-emitting component, light-sensitive element is along with the energy of rotation of obscuring blade cuts light between light-emitting component and the light-sensitive element in real time.Thereby light-emitting component and light-sensitive element can be arranged at cylinder inboard wall, also can work as and make it to be arranged at the cylindrical shell outside when cylindrical shell part is for the transparent body at least, and to get rid of of the influence of extraneous light to light-sensitive element, light-emitting component can be selected one of light emitting diode, infraluminescence pipe or miniature bulb for use, and light-sensitive element also can be selected one of photosensitive triode, light sensitive diode or photoconductive resistance for use.

The electronic type spirometer that this utility model provides is further described below in conjunction with embodiment and accompanying drawing according to above-mentioned structure:

According to flowing gas sensor construction sketch map shown in Figure 2, the cylindrical shell that has an air inlet is made of cylindrical shell made from transparent material (9) and the cylindrical shell (8) made with non-transparent material, the center that is provided with respectively in cylindrical shell (9) has the air-flow directive wheel (5) of bearing block and the support (12) that the center is bearing block (1), obscuring blade (4) is fixed on the axle (2), this axle is arranged between support and the directive wheel, be provided for adjusting the screw (13) of a resistance in a side of bearing block (1), make this screw be used to adjust the rotatory inertia of obscuring blade with this, cylindrical shell (9) outside that is positioned at obscuring blade by retainer ring (11) be provided with respectively as light-emitting component infrarede emitting diode (3) and as the phototriode (10) of light-sensitive element.For fear of of the influence of extraneous light, cylindrical shell is placed in the housing of being made by non-light transmissive material (6) light-sensitive element.Be provided with dismountable blow gun (7) at the air inlet place of cylindrical shell (8), this blow gun helps the experimenter blows, and also helps in time taking out sterilization on the other hand.

According to circuit diagram shown in Figure 3, infrarede emitting diode D ₁Negative pole and audion BG ₁Colelctor electrode link to each other BG ₁Emitter stage connect resistance R ₄And ground connection, BG ₁Base stage energising press V ₁, phototriode BG ₂Base stage receive D ₁Light, BG ₂Grounded emitter, and BG ₂Colelctor electrode connect resistance R ₁With coupling capacitance C ₁, C ₁The other end be communicated with R as divider resistance ₂With R ₃Between, R ₁, R ₂And D ₁Positive pole connect voltage V, BG ₂Emitter stage and R ₃Ground connection.When pick off during in energized foregoing circuit under dc state, work D ₁At BG ₁Base stage at conducting V ₁Luminous work under the effect of voltage, and BG ₂Base stage along with whenever rotating a circle of obscuring blade make the emitter stage conducting, by once, thereby BG ₂By coupling capacitance C ₁Export a pulse signal; and a series of pulse signals that obtain therefrom are input to the Schmidt trigger in the Pulse Signal Processing System; through shaping filter, digital-to-analogue conversion, calculating and display circuit, finally on LCDs, demonstrate measured vital capacity.When specifically making this utility model, press shown in Figure 4, except light-emitting component and light-sensitive element are arranged at the flowing gas pick off (15), remaining electronic component and electronic circuit are installed in the host shell (30), and display screen (18) and gauge tap (17) are set at an end of housing, be connected lead (14) between pick off (also can claim to blow tube) and host shell, the air inlet of pick off is furnished with blow gun (16), and travel(l)ing rest (19) is set on host shell.

The electronic pneumono-meter that the utility model provides according to above-mentioned structure, compare with existing spirometer and to have the characteristics such as certainty of measurement height, speed is fast, reading is directly perceived, its precision can improve more than 100%, manufacturing cost is lower, and can also measure timed vital capacity when measuring lung capacity. Because little, the weight of the utility model volume is light, be easy to carry, and not affected by environment temperature, instrument institute seated position etc., as long as the hand-held tube that blows of experimenter is blown to blow gun, thereby can be widely used in the fields such as physical culture, health, sports medical science, physical fitness research and physical examination.

Description of drawings:

The principle schematic of the electronic type spirometer that Fig. 1 provides for this utility model;

The structural representation of flowing gas pick off in the electronic type spirometer that Fig. 2 provides for this utility model;

Partial circuit figure in the electronic type spirometer that Fig. 3 provides for this utility model in flowing gas pick off and the Pulse Signal Processing System;

The surface structure sketch map of the electronic type spirometer that Fig. 4 provides for this utility model.

Claims

1, the electronic type spirometer that belongs to a kind of human body vital capacity checkout gear, it is characterized in that this spirometer is made up of flowing gas pick off and Pulse Signal Processing System, its flowing gas pick off is for being provided with in the cylindrical shell that will be provided with air inlet and air vent by containing the wind rotation mechanism that the gentle stream directive wheel of obscuring blade constitutes, be positioned on the cylindrical shell of obscuring blade both sides light-emitting component and light-sensitive element are set respectively, the outfan of light-sensitive element is connected with the input of the Pulse Signal Processing System that is made of shaping filter, digital-to-analogue conversion, calculating and display circuit;

2, according to the described electronic type spirometer of claim 1, it is characterized in that described wind rotation mechanism is fixed on the cylinder inboard wall for the air-flow directive wheel that the center is provided with bearing block, on the intravital side of tube, be provided with another bearing block by support, obscuring blade is fixed on one, and this axle is arranged between bearing block and the directive wheel;

3, according to the described electronic type spirometer of claim 2, bearing block one end that it is characterized in that being arranged on the intravital support of tube is provided with an inertia adjustment screw;

4, according to claim 1,2 or 3 described electronic type spirometers, it is characterized in that being positioned at cylindrical shell one end of obscuring blade for to make by transparent material, and this cylindrical shell outside is provided with light-emitting component and light-sensitive element respectively by retainer ring, and cylindrical shell and retainer ring are arranged in the housing of being made by non-light transmissive material;

5, according to the described electronic type spirometer of claim 4, it is characterized in that light-emitting component adopts infrarede emitting diode, light-sensitive element adopts phototriode, and the colelctor electrode of phototriode is by the Schmidt trigger input in the coupling capacitance connection Pulse Signal Processing System;

6, according to the described electronic type spirometer of claim 5, it is characterized in that burst process system, display screen, gauge tap are arranged in the host shell, be connected with lead between flowing gas pick off and the host shell, and the air inlet place of pick off is provided with dismountable blow gun.