CN201160850Y

CN201160850Y - Integral electronic spirometer

Info

Publication number: CN201160850Y
Application number: CNU200820078826XU
Authority: CN
Inventors: 王瑾
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-01-30
Filing date: 2008-01-30
Publication date: 2008-12-10
Anticipated expiration: 2018-01-30

Abstract

The utility model relates to an integral electronic pneumatometer which comprises a casing. The inside of the casing is provided with a blowing bile duct which is hollow and is formed by connecting an inlet front linear section, a converging section, a hollow throat and a diffusion section. The linear section and the side wall of the hollow throat are provided with portiforiums which are connected with a differential pressure sensor through a conduit arranged on the portiforium. The inside of the casing is further provided with a control circuit connected with the differential pressure sensor, wherein, the control circuit is further connected with a power supply unit. The portiforium at the side wall of the cavity of the blowing bile duct and the portiforium of the linear section are positioned at the tail end connected with the converging section. The portiforium of the hollow throat is positioned at the middle part. The rear end of the hollow throat of the cavity is further connected with the diffusion section. The inner wall of the diffusion section presents a streamline transition. Compared with the common electronic pneumatometer, the integral electronic pneumatometer has the advantages of combination of measurement, display and manipulation, compact volume, convenient carrying, relatively high detection precision, etc.

Description

Integral type electronics spirometer

[technical field]

This utility model relates to a kind of instrument that is used to measure the human body vital capacity, refers in particular to a kind of electronics vital capacity measuring instrument of integral type.

[background technology]

In existing vital capacity measuring technique, traditional approach has float-type, swinging spirometer, but often volume is big, inconvenience is mobile for it, and measurement efficient is low, error is bigger; Along with development of technology, and then produced the vital capacity electronic gauge, its metering system has vane type, Venturi tube or orifice plate equal-pressure difference type, yet vane type wherein weares and teares easily, differential then easy hydrops causes measurement error, visible in the market in addition electronic type product all adopts the isolating mode of measure portion and electronics display part, its measure portion need with the electronics display part between be connected by lead or trachea, still convenient and swift inadequately in actual use.

[summary of the invention]

The purpose of this utility model is to have overcome above-mentioned defective, and a kind of electronics spirometer of integral type is provided, and it has characteristics simple in structure, that measurement is rapid and precision is high, the life-span is long.

The purpose of this utility model is achieved in that a kind of integral type electronics spirometer, its improvements are: it comprises casing, the air blowing bile duct is installed in the casing, air blowing bile duct hollow is linked to each other with diffuser by preceding straightway, converging portion, the trunnion of air inlet and forms, have perforate on straightway and the trunnion sidewall, perforate links to each other with differential pressure pickup by the conduit which is provided with; Also be provided with the control circuit that links to each other with differential pressure pickup in the casing, control circuit also links to each other with power supply unit;

The perforate of described air blowing bile duct cavity wall, the perforate of straightway are positioned at the tail end that itself and converging portion join, and the perforate of trunnion is positioned at the middle part;

The trunnion rear end of described cavity also is connected with diffuser, and it is streamlined excessive that the diffuser inwall becomes.

Than common electronics spirometer, the beneficial effects of the utility model are that it integrates measurement, shows, controls, and it is small and exquisite portable to have a volume, and accuracy of detection is than advantages such as height.

[description of drawings]

Below in conjunction with drawings and Examples this utility model is described further.

Fig. 1 is a structural representation of the present utility model.

Fig. 2 is the structural representation of this utility model vital capacity air blowing bile duct.

Fig. 3 is this utility model circuit block diagram.

[specific embodiment]

Be illustrated in figure 1 as this utility model structural representation, it comprises casing 1, casing 1 internal fixation has control circuit 4, be fixed with air blowing bile duct 2 by a plurality of columns 101 in it, air blowing bile duct 2 sidewalls are connected to differential pressure pickup 3 by the perforate inner catheter, its opening communicates with casing 1 one ends, and casing 1 other end surface is embedded with LED display 5 and control knob 6.

Structural representation such as Fig. 2 of air blowing bile duct 2 in the casing 1, the diffuser 204 that its hollow includes preceding straightway 201, converging portion 202 and the trunnion 203 of gas and afterbody links to each other and forms, have perforate on straightway 201 and trunnion 203 sidewalls, perforate is provided with conduit 204,205, perforate is connected to differential pressure pickup 3 by conduit 204,205, trunnion 203 back diffuser 204 inwalls become downward streamlined excessively, can effectively reduce the seeping phenomenon in the pipeline.

Referring to the used circuit block diagram of Fig. 3 this utility model embodiment, comprise differential pressure pickup, signal amplification circuit, A/D change-over circuit, single-chip microcomputer, LCD display, button, electric power management circuit and power supply composition.In the time of use, press button and begin vital capacity and detect, the tested person is as blowing in the air blowing bile duct 2, and differential pressure pickup will record signal through amplifying, delivering to central processing unit after the digital-to-analogue conversion and handle, and after the processing relevant information will be shown on the LED display; Battery is the said units power supply by electric power management circuit.Central processing unit is selected simple 8 single-chip microcomputers for use herein.Because the signal of telecommunication that differential pressure pickup records is less usually, so need be equipped with signal amplification circuit and A/D converter for it, also can directly select the single-chip microcomputer that has fixed gain (or ride gain able to programme) and A/D translation function herein for use or select for use signal amplification circuit to cooperate the single-chip microcomputer that has A/D converter to finish the task that central authorities handle.

Claims

1. integral type electronics spirometer, it is characterized in that: it comprises casing, the air blowing bile duct is installed in the casing, air blowing bile duct hollow is linked to each other with diffuser by preceding straightway, converging portion, the trunnion of air inlet and forms, have perforate on straightway and the trunnion sidewall, perforate links to each other with differential pressure pickup by the conduit which is provided with; Also be provided with the control circuit that links to each other with differential pressure pickup in the casing, control circuit also links to each other with power supply unit.

2. integral type electronics spirometer as claimed in claim 1 is characterized in that: the perforate of described air blowing bile duct cavity wall, the perforate of straightway are positioned at the tail end that itself and converging portion join, and the perforate of trunnion is positioned at the middle part.

3. integral type electronics spirometer as claimed in claim 2 is characterized in that: the trunnion rear end of described cavity also is connected with diffuser, and it is streamlined excessive that the diffuser inwall becomes.