CN2395688Y - Digital display type electronic meter for vital capacity - Google Patents
Digital display type electronic meter for vital capacity Download PDFInfo
- Publication number
- CN2395688Y CN2395688Y CN 00201324 CN00201324U CN2395688Y CN 2395688 Y CN2395688 Y CN 2395688Y CN 00201324 CN00201324 CN 00201324 CN 00201324 U CN00201324 U CN 00201324U CN 2395688 Y CN2395688 Y CN 2395688Y
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- China
- Prior art keywords
- pressure
- digital display
- air
- display type
- flow differential
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Abstract
The utility model relates to a digital display type electronic meter for vital capacity, which comprises a pressure measuring device, a pressure sensor, a pressure frequency converter, a monolithic computer and a digital display, wherein, the pressure measuring device is composed of an air inlet pipe, an air-flow differential pressure generation device and a handle. The pressure measuring device is connected with the pressure sensor, the pressure frequency converter, the monolithic computer and the digital display orderly. The air inlet pipe is connected with the front end of the air-flow differential pressure generation device, and the handle is connected with the side surface of the air-flow differential pressure generation device. The device adopts the pressure measuring device with a diameter changed pipeline, which avoids saliva flowing in a pressure measurement pressure guide pipe to cause measurement error or to be unable to have normal work.
Description
This utility model relates to a kind of digital display type spirometer that is used to measure human body vital capacity size, particularly, relates to a kind of digital display type electronics spirometer of measuring vital capacity by means of gas flowmeter (pressure tester).
The vital capacity size is an important parameter that can be used as evaluation human body physical condition.The existing most adopts pressure sensor of electronics spirometer flows into pressure catheter if any saliva in measuring process, will produce bigger measurement error, and can cause spirometer when serious can't operate as normal.
This utility model is exactly the innovation and creation of making for the problems referred to above that solve existing spirometer, and its purpose is to provide a kind of measurement error little, reliable operation, digital display type electronics spirometer easy to use.
For achieving the above object, the technical solution of the utility model is:
A kind of digital display type electronics spirometer comprises: pressure tester, the pressure transducer, voltage-frequency converter, single-chip microcomputer and the character display that connect with this pressure tester successively, wherein this pressure tester is made of air inlet pipe, air-flow differential generating means and handle, this air inlet pipe is connected in the front end of this air-flow differential generating means, and this handle is connected in the side of this air-flow differential generating means.
According to digital display type electronics spirometer of the present utility model, have the pressure tester that shrinks taper owing to adopt, or have the Venturi tube of short and small diffuser, or has a pressure tester of diffuser, connecting pipe is a malleation before making, but back connecting pipe emptying, or receive on the cavity of pressure tester.So just can avoid saliva to flow in the connecting pipe that pressure measurement uses.And, for guaranteeing in the pressure measurement process, make connecting pipe be positioned at the top of blowing nozzle, a handle is installed on the shell of measuring pressure device especially, cause measurement error thereby reduce, even cause the spirometer cisco unity malfunction because of improper use causes saliva to flow in the pressure-measuring pipe
Fig. 1 is the structural representation cutaway view of the pressure tester of digital display type electronics spirometer of the present utility model;
Fig. 2 is the contraction profile diagram of the contraction pipe section of pressure tester shown in Figure 1;
Fig. 3 a, 3b are respectively the pressure tester structure charts with different diffuser shapes with 3c.
Below, in conjunction with the accompanying drawings, describe embodiment of the present utility model in detail.
Digital display type electronics spirometer generally comprises: pressure tester, pressure transducer, voltage-frequency converter, single-chip microcomputer and character display.During use, testee's exhaled air flow passes through pressure tester, pressure transducer in being installed on this pressure tester is exported the signal of telecommunication with the pressure reduction of air-flow, this signal of telecommunication is handled through single-chip microcomputer again, the data of measuring process are carried out integration and correction, at last the result is shown on character display.About the technology of this voltage-frequency converter, single-chip microcomputer and display aspect all is existing technology, therefore here introduces and be omitted.
At first, with reference to Fig. 1, the pressure tester of this digital display type electronics spirometer is described.This pressure tester is made up of air inlet pipe 1, air-flow differential generating means 2 and 8 three parts of handle.This air inlet pipe 1 is connected in the front end of this air-flow differential generating means 2 and handle 8 is connected in a side of this air-flow differential generating means 2.
This air inlet pipe 1 can be circular pipeline, and the one end has blowing nozzle, and the other end connects with an end of this air-flow differential generating means 2.In addition, the caliber of these air inlet pipe 1 one ends, can be than the other end slightly little.
This air-flow differential generating means 2 comprises: shell 11; The equal diameter pipe part 9 that is positioned at this shell 11 and connects with it; Contraction pipe section 7 with these isometrical pipe section 9 connections; First connecting pipe 4 that on equal diameter pipe part 9, is provided with first pressure tap 3.Second connecting pipe 6 with second pressure tap 10 also can be set on the sidewall of cavity segment 5 outside.Also can be without this second pressure tap 10, and use the atmosphere static pressure.Gas-static links to each other with an end of pressure transducer with silica gel tube by first conduit 4 on first pressure tap 3, and the other end of this pressure transducer passes through second conduit 6 and links to each other with second pressure tap 10 on the exocoel 5.But also can not connect this conduit and select pick off for use.
This contraction pipe section 7 is a kind of conical pipes that shrink gradually, and its tapering can decide as required.This shrinks pipe section 7 and shrinks profile except that the straight line contraction profile of above-mentioned taper, also can adopt the curve of taper to shrink profile, as shown in Figure 2.
Shrink the big end of pipe section 7 diameters and connect with equal diameter pipe part 9, other end emptying is in the inside of shell 11.Also have, be surrounded by shell 11 outside this isometrical pipe section 9 and the contraction pipe section 7, and shrink after the pipe section 7, short outlet diffusor part (not drawing among the figure) also can be arranged.
In addition, be provided with handle 8, so that in use keep the correct attitude of pressure tester in shell 11 tops.Just can avoid saliva to flow in the pressure catheter like this, cause measurement error, cause the spirometer cisco unity malfunction.Secondly, with reference to Fig. 3 a, 3b and 3c, the pressure tester of explanation can have difform diffuser structure.Air-flow differential generating means 2 has equal-diameter part 9 and the contraction pipe section 7 of the reducing that connects with this equal-diameter part 9, and collapsible tube part 7 be connected with the outlet diffusor part 12,12 of inverted cone ', 12 ".Different with the foregoing description is the contraction pipe section that this collapsible tube part 7 is flip-flop calibers, promptly shrinks the pipe diameter of the diameter of pipe section less than equal-diameter part 9, rather than adopts the curve of taper to shrink profile.The outlet diffusor part 12,12 of this inverted cone ', 12 " be respectively the bullet that linear increases, or the bullet that increases of curve shape.And, first connecting pipe 4 that on equal diameter pipe part 9, is provided with first pressure tap 3.Second connecting pipe 6 with second pressure tap 10 is set on these collapsible tube part 7 sidewalls, under identical flow velocity, can accesses higher pressure difference.
When measuring vital capacity, the testee, the front end blowing nozzle that is connected air inlet pipe 1 with mouth is blown inward, and gas, is then discharged from the outlet diffusor of this pressure reduction generating means again to shrinking pipe section 7 via equal diameter pipe part 9.
Like this, this gas-static is added to pressure differential on the pick off via first conduit 4 and second conduit 6, on this pick off, produce the output signal of telecommunication, this signal is handled through single-chip microcomputer, and the data of measuring process are carried out integration and correction, the result is presented on the screen of display at last.
The foregoing description of the present utility model just is used to disclose content of the present invention, purpose and advantage, rather than is used to limit this utility model.Those of ordinary skill in the art obtains the inspiration of foregoing; be not difficult spirometer of the present utility model is made various modifications, replacing or change; and these should not think and broken away from design scope of the present invention that the protection domain of this patent should be limited by claims.
Claims (6)
1, a kind of digital display type electronics spirometer comprises: pressure tester, the pressure transducer, voltage-frequency converter, single-chip microcomputer and the character display that connect with this pressure tester successively, it is characterized in that described this pressure tester is made of air inlet pipe, air-flow differential generating means and handle, described air inlet pipe is connected in the front end of this air-flow differential generating means, and described handle is connected in the side of this air-flow differential generating means.
2, digital display type electronics spirometer according to claim 1 is characterized in that this air-flow differential generating means has: shell; Be positioned within the described shell, and with the equal diameter pipe part of its connection; Tapered pipeline part that partly connects with described equal diameter pipe and described equal diameter pipe partly are provided with first connecting pipe with first pressure tap.
3, digital display type electronics spirometer according to claim 2 is characterized in that, the sidewall of the outer cavity segment of described shell is provided with second connecting pipe of second pressure tap.
4, digital display type electronics spirometer according to claim 2, it is characterized in that, described tapered pipeline partly is to have the taper that straight line shrinks profile or curve contraction profile, and the sidewall of described tapered pipeline part is provided with second connecting pipe of second pressure tap.
5, digital display type electronics spirometer according to claim 4 is characterized in that, after the described tapered pipeline part, is connected with the outlet diffusor part.
6, digital display type electronics spirometer according to claim 5 is characterized in that, described outlet diffusor section is the back taper body of straight line increase or the back taper body that shaped form increases.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00201324 CN2395688Y (en) | 1999-11-24 | 2000-01-26 | Digital display type electronic meter for vital capacity |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN99254455.6 | 1999-11-24 | ||
| CN99254455 | 1999-11-24 | ||
| CN 00201324 CN2395688Y (en) | 1999-11-24 | 2000-01-26 | Digital display type electronic meter for vital capacity |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2395688Y true CN2395688Y (en) | 2000-09-13 |
Family
ID=34064071
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00201324 Expired - Lifetime CN2395688Y (en) | 1999-11-24 | 2000-01-26 | Digital display type electronic meter for vital capacity |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2395688Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101243525B (en) * | 2005-06-29 | 2011-07-06 | Scireq科学呼吸设备公司 | Self-actuated cylinder and oscillation spirometer |
| 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 |
-
2000
- 2000-01-26 CN CN 00201324 patent/CN2395688Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101243525B (en) * | 2005-06-29 | 2011-07-06 | Scireq科学呼吸设备公司 | Self-actuated cylinder and oscillation spirometer |
| 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 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C32 | Full or partial invalidation of patent right | ||
| IP01 | Partial invalidation of patent right |
Decision date of declaring invalidation: 20061231 Decision number of declaring invalidation: 9425 Case number: 5W06380 Conclusion of examination: The conclusions of the review declared: no 6. patent claims 1, 4 2, 3 invalid, based on the maintenance of patent rights remain valid in the notice of authorization. Decision date: 20061231 Denomination of utility model: Digital display type electronic meter for vital capacity Granted publication date: 20000913 Patentee: Zhao Donghong Review decision number: 9425 |
|
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20000913 |