CN2367251Y - Digital-display type electronic pneumanometer - Google Patents
Digital-display type electronic pneumanometer Download PDFInfo
- Publication number
- CN2367251Y CN2367251Y CN 98205434 CN98205434U CN2367251Y CN 2367251 Y CN2367251 Y CN 2367251Y CN 98205434 CN98205434 CN 98205434 CN 98205434 U CN98205434 U CN 98205434U CN 2367251 Y CN2367251 Y CN 2367251Y
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- pressure
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- inlet pipe
- spirometer
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Abstract
The utility model relates to a digital-display type electronic spirometer, which comprises a flow measuring device, a differential pressure transducer which is connected with a differential pressure generating device and a digital-display device which is connected with the differential pressure transducer. A flow device is composed of a venturi pipe, an air inlet pipe shell body and an exhaust pipe. The venturi pipe is arranged in the air inlet pipe, and a pressure taking pipe is arranged at the outer side of the air inlet pipe. The downstream end part of the air inlet pipe shell body is connected with the exhaust pipe, and a differential pressure collecting component is arranged in the venturi pipe. The spirometer has less air flow resistance loss, high sensitivity, wide measuring range, high accuracy and high stability.
Description
This utility model relates to a kind of spirometer that is used to measure human body vital capacity size, particularly, relates to the digital display type electronics spirometer with the sensor measurement gas flow.
The size of measuring vital capacity is an important parameter that can be used as evaluation human body physical condition.In existing technology, be used to measure the metrical instrument of vital capacity, float-type, mechanical type spirometer are arranged.The major defect of these instruments is that sensitivity is not high, and measurement result is not accurate enough.The electronics spirometer of Chu Xianing in recent years, CN94228915 for example, though all increase significantly than float-type and mechanical type spirometer on sensitivity and precision, because of adopting the orifice-plate type throttling arrangement, drag losses is bigger.When the flow velocity of measuring was low, bigger error had also appearred in its measurement result.
This utility model is researched and developed in order to solve the deficiencies in the prior art part, and its purpose is to provide that a kind of to have when measuring a gas-flow resistance loss little, highly sensitive, the digital display type electronics spirometer of accuracy and good stability.
For achieving the above object, digital display type electronics spirometer of the present utility model, comprising flow measurement device, be connected in the differential pressure pickup of this flow measurement device, and be connected in the numeric display unit of this differential pressure pickup, above-mentioned flow measurement device is made up of Venturi tube, air inlet pipe housing and exhaustor, and above-mentioned air inlet pipe enclosure interior is provided with above-mentioned Venturi tube, and its outside is provided with the pressure pipe; The downstream of above-mentioned air inlet pipe housing is connected with above-mentioned exhaustor; And above-mentioned Venturi tube is provided with the pressure reduction acquisition component.
Digital display type electronics spirometer of the present utility model owing to adopt Venturi tube and pressure reduction acquisition component thereof, has differential pressure pickup and numeric display unit in addition, so that this spirometer is measured is highly sensitive, the result is stable, volume urinate in carry, easy to use.And, when measuring, also can dynamically show the numerical value of measuring process.This spirometer measuring range is wide, measure range and can arrive 10000ml, and its certainty of measurement is higher than 1%FS, with satisfied needs to the testing of human body vital capacity.
Fig. 1 is the schematic configuration diagram of the flow measurement device in expression this utility model spirometer.
Fig. 2 is the profile along the A-A line among Fig. 1.
Below, in conjunction with the accompanying drawings, describe embodiment of the present utility model in detail.
The concrete structure of flow measurement device in the spirometer of the present utility model, as shown in Figure 1.This spirometer, the numeric display unit of forming by voltage-frequency converter, single-chip microcomputer and display that comprises flow measurement device, is connected in the differential pressure pickup of this flow measurement device and is connected in this differential pressure pickup.Wherein, the numeric display unit that voltage-frequency converter, single-chip microcomputer and display are formed all is general prior art, here no longer is illustrated.This flow measurement device is made up of Venturi tube 2, air inlet pipe housing 1 and exhaustor 3.Above-mentioned air inlet pipe housing 1 inside is provided with Venturi tube 2, and this hull outside is provided with the extending port of two pressure pipes 6,7.Two pressure pipes 6,7 are passed to differential pressure pickup with pressure differential, convert the signal of telecommunication to by this differential pressure pickup and give numeric display unit and carry out the vital capacity value and show.And, in the exhaust ports of being close to Venturi tube 2, i.e. the downstream of this air inlet pipe housing 1, this air inlet pipe housing 1 is connected with exhaustor 3 usefulness screw threads.
In flow measurement device of the present utility model, adopt Venturi tube as the parts that produce pressure reduction.As everyone knows, Venturi tube is made up of the conical pipe of convergent flaring.Key point of the present utility model is that the pressure reduction acquisition component is set on the Venturi tube tube wall.This pressure reduction acquisition component comprises: be arranged on straight-tube portion, i.e. the upstream pressure vessel 4 of upstream extremity and the intersection that is arranged on reducing pipe and increaser, i.e. the downstream pressure vessel 5 of the throat of venturi diameter minimum.The pressure that two pressure vessels are obtained from upstream and downstream connects with pipeline with differential pressure pickup, by differential pressure pickup pressure signal is transformed into voltage signal.Convert voltage signal to digital signal again by voltage-frequency converter (A/D converter) then, these signals are after single-chip microcomputer is handled, and the measurement result with vital capacity is presented on the display screen with numeral.
Below, the pressure vessel structure in the flow measurement device of the present utility model is described.Because upstream pressure vessel 4 is identical with the structure of downstream pressure vessel 5, so, be example only with upstream pressure vessel 4, it is bright that its structure is carried out detailed order of classes or grades at school.As shown in Figure 2, this pressure vessel possesses has: pressure ring 41; And a plurality of pressure through hole 42a-42f that are communicated with this pressure ring 41.And above-mentioned pressure through hole 42a-42f has pressure tappings, and has the outlet that is communicated with pressure ring 41 on its outer wall on the inwall of Venturi tube 2.And, it is desirable to, each pressure through hole 42a-42f along the radial direction of Venturi tube 2, evenly is configured on the tube wall circumference gauge allocation of Venturi tube 2.And 42a-42f is rounded for this pressure through hole.In addition, upstream pressure ring 41 is communicated with pressure pipe 6.And this pressure ring 41 is communicated with the interface of pressure pipe 6 by air inlet pipe housing 1.
When using this digital display type electronics spirometer, flow through the situation shape of the Venturi tube of flow measurement device as gas, because on flowing through, the flow velocity difference at downstream pressure tappings place then produces certain pressure reduction in two places pressure ring.Voltage signal by means of differential pressure pickup records through voltage-frequency converter, is sent to Single Chip Microcomputer (SCM) system again and handles, and single-chip microcomputer is revised and integration the result who records, and tries to achieve the vital capacity value at last, and shows its digital value on display screen.
Claims (4)
1, a kind of digital display type electronics spirometer, comprise flow measurement device, be connected in the differential pressure pickup of this pressure reduction generating means, and the numeric display unit that is connected in this differential pressure pickup, it is characterized in that, above-mentioned flow apparatus is made up of Venturi tube, air inlet pipe housing and exhaustor, and the inside of above-mentioned air inlet pipe housing is provided with above-mentioned Venturi tube, and its outside is provided with the pressure pipe; The downstream of above-mentioned air inlet pipe housing is connected with above-mentioned exhaustor; And above-mentioned Venturi tube is provided with the pressure reduction acquisition component.
2, digital display type electronics spirometer according to claim 1 is characterized in that, above-mentioned pressure reduction acquisition component comprises the upstream pressure vessel of the upstream extremity that is arranged on the Venturi tube tube wall and the downstream pressure vessel of downstream.
3, digital display type electronics spirometer according to claim 2 is characterized in that, above-mentioned upstream pressure vessel and above-mentioned downstream pressure vessel, and a plurality of pressure through holes that all have the pressure ring and be communicated with above-mentioned pressure ring, and above-mentioned pressure ring is communicated with above-mentioned pressure pipe.
4, digital display type electronics spirometer according to claim 3 is characterized in that, a plurality of above-mentioned pressure through holes evenly are configured on the Venturi tube tube wall assigned position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98205434 CN2367251Y (en) | 1998-05-27 | 1998-05-27 | Digital-display type electronic pneumanometer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98205434 CN2367251Y (en) | 1998-05-27 | 1998-05-27 | Digital-display type electronic pneumanometer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2367251Y true CN2367251Y (en) | 2000-03-08 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98205434 Expired - Lifetime CN2367251Y (en) | 1998-05-27 | 1998-05-27 | Digital-display type electronic pneumanometer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2367251Y (en) |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102573627A (en) * | 2009-08-13 | 2012-07-11 | 朗泰克有限公司 | Improved spirometer apparatus and methods useful in conjunction therewith |
| CN104586396A (en) * | 2014-12-12 | 2015-05-06 | 歌尔声学股份有限公司 | Vital capacity testing method and equipment |
| CN105249969A (en) * | 2015-11-03 | 2016-01-20 | 河海大学 | New type low power consumption electronic measuring instrument for vital capacity |
| CN105372446A (en) * | 2015-12-12 | 2016-03-02 | 中国航空工业集团公司西安飞机设计研究所 | Differential pressure type wind speed measuring sensor and detecting device with same |
| CN106108906A (en) * | 2016-08-29 | 2016-11-16 | 浙江亿联健医疗器械有限公司 | Flow transducer for lung function |
| WO2018041073A1 (en) * | 2016-08-29 | 2018-03-08 | 台州亿联健医疗科技有限公司 | Flow sensor, method and application for cross-infection prevention |
| WO2018041068A1 (en) * | 2016-08-29 | 2018-03-08 | 台州亿联健医疗科技有限公司 | Flow sensor for pulmonary function testing, spirometer and testing method and application thereof |
| US10098570B2 (en) | 2016-09-06 | 2018-10-16 | Vigor Medical Systems, Inc. | Portable spirometer and method for monitoring lung function |
| CN108844673A (en) * | 2018-06-27 | 2018-11-20 | 天津浩天自动化仪表制造有限公司 | A kind of rectification type Venturi tube pressure difference measuring device |
| CN108882891A (en) * | 2016-04-05 | 2018-11-23 | 日本精密测器株式会社 | Expiration check device |
| CN109009131A (en) * | 2018-07-02 | 2018-12-18 | 广州华夏汇海科技有限公司 | Electronics vital capacity measuring device and lung capacity tests system based on Internet of Things |
| CN109222979A (en) * | 2018-07-02 | 2019-01-18 | 广州华夏汇海科技有限公司 | The traffic alignment method of electronics vital capacity measuring device |
| CN109984746A (en) * | 2019-04-05 | 2019-07-09 | 浙江亿联康医疗科技有限公司 | Pulmonary function test apparatus detection device |
| CN111238581A (en) * | 2020-03-12 | 2020-06-05 | 知心健(南京)科技有限公司 | Peripheral sampling differential pressure sensor for gas flow collection |
| WO2020157707A1 (en) * | 2019-02-01 | 2020-08-06 | Fisher & Paykel Healthcare Limited | Pressure relief device and components therefor |
-
1998
- 1998-05-27 CN CN 98205434 patent/CN2367251Y/en not_active Expired - Lifetime
Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10070803B2 (en) | 2009-08-13 | 2018-09-11 | Lungtek Ltd. | Spirometer apparatus and methods useful in conjunction therewith |
| CN102573627A (en) * | 2009-08-13 | 2012-07-11 | 朗泰克有限公司 | Improved spirometer apparatus and methods useful in conjunction therewith |
| US10568543B2 (en) | 2014-12-12 | 2020-02-25 | Goertek Inc. | Method and apparatus for testing vital capacity |
| CN104586396A (en) * | 2014-12-12 | 2015-05-06 | 歌尔声学股份有限公司 | Vital capacity testing method and equipment |
| CN104586396B (en) * | 2014-12-12 | 2017-04-26 | 歌尔股份有限公司 | Vital capacity testing method and equipment |
| CN105249969A (en) * | 2015-11-03 | 2016-01-20 | 河海大学 | New type low power consumption electronic measuring instrument for vital capacity |
| CN105372446A (en) * | 2015-12-12 | 2016-03-02 | 中国航空工业集团公司西安飞机设计研究所 | Differential pressure type wind speed measuring sensor and detecting device with same |
| CN108882891A (en) * | 2016-04-05 | 2018-11-23 | 日本精密测器株式会社 | Expiration check device |
| WO2018041068A1 (en) * | 2016-08-29 | 2018-03-08 | 台州亿联健医疗科技有限公司 | Flow sensor for pulmonary function testing, spirometer and testing method and application thereof |
| WO2018041073A1 (en) * | 2016-08-29 | 2018-03-08 | 台州亿联健医疗科技有限公司 | Flow sensor, method and application for cross-infection prevention |
| CN106108906A (en) * | 2016-08-29 | 2016-11-16 | 浙江亿联健医疗器械有限公司 | Flow transducer for lung function |
| US11154218B2 (en) | 2016-08-29 | 2021-10-26 | Zhejiang E-Linkcare Meditech Co., Ltd | Flow sensor and method for preventing cross-infection and application thereof |
| US10098570B2 (en) | 2016-09-06 | 2018-10-16 | Vigor Medical Systems, Inc. | Portable spirometer and method for monitoring lung function |
| US11234614B2 (en) | 2016-09-06 | 2022-02-01 | Vigor Medical Systems, Inc. | Portable spirometer and method for monitoring lung function |
| CN108844673A (en) * | 2018-06-27 | 2018-11-20 | 天津浩天自动化仪表制造有限公司 | A kind of rectification type Venturi tube pressure difference measuring device |
| CN109009131A (en) * | 2018-07-02 | 2018-12-18 | 广州华夏汇海科技有限公司 | Electronics vital capacity measuring device and lung capacity tests system based on Internet of Things |
| CN109222979A (en) * | 2018-07-02 | 2019-01-18 | 广州华夏汇海科技有限公司 | The traffic alignment method of electronics vital capacity measuring device |
| WO2020157707A1 (en) * | 2019-02-01 | 2020-08-06 | Fisher & Paykel Healthcare Limited | Pressure relief device and components therefor |
| CN109984746A (en) * | 2019-04-05 | 2019-07-09 | 浙江亿联康医疗科技有限公司 | Pulmonary function test apparatus detection device |
| CN111238581A (en) * | 2020-03-12 | 2020-06-05 | 知心健(南京)科技有限公司 | Peripheral sampling differential pressure sensor for gas flow collection |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |