CN102691639B - Digital display air pump and method for accurately obtaining air pressure of inflated device - Google Patents
Digital display air pump and method for accurately obtaining air pressure of inflated device Download PDFInfo
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- CN102691639B CN102691639B CN201210191406.3A CN201210191406A CN102691639B CN 102691639 B CN102691639 B CN 102691639B CN 201210191406 A CN201210191406 A CN 201210191406A CN 102691639 B CN102691639 B CN 102691639B
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- pressure value
- atmospheric pressure
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- sampling
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Abstract
The invention provides a digital display air pump, belonging to the field of an air pump and solving the problem that the existing air pump cannot accurately display an inflating air pressure. The digital display air pump comprises a direct-current input module, a direct-current motor, an air compressor and an air pressure sensor, wherein the air pressure sensor is connected between the air compressor and an inflated device and is used for detecting a sampling air pressure value between the air compressor and the inflated device; and a control module is used for receiving the sampling air pressure value output by the air pressure sensor, processing the sampling air pressure value and outputting an accurate air pressure value to a display module. According to the digital display air pump, a sampling air pressure detected by the air pressure sensor is specially processed in the control module, so that a real-time air pressure value of the inflated device, which is output by the control module, is more accurate, and a user can conveniently judge. The invention further provides a method for accurately obtaining the air pressure of the inflated device.
Description
Technical field
The present invention relates to inflation technical field, particularly relate to a kind of digital display air pump and accurately obtain the method being inflated device air pressure.
Background technique
Air pump is a kind of accessory conventional on automobile, and it produces air pressure with to being inflated device by electric power band engine-driven air compressor, the inflations such as such as tire.In the using process of air pump, in order to understand the air pressure situation being inflated device, prevent hyperinflation from causing being inflated device explosion, usually baroceptor is connected at air compressor output terminal, by detecting the air pressure of air compressor output terminal, rough calculation goes out to be inflated the air pressure of device, and is shown by this atmospheric pressure value by display unit.
But be connected by tracheae with being inflated between device due to air compressor, there is change in air tubing length, also there is the difference whether having valve inside in the gas access place being inflated device, simultaneously when being inflated the pressure change in device, the motor speed of band engine-driven air compressor also changes thereupon; Above-mentioned factor all makes from baroceptor to the complexity that the relation of the atmospheric pressure value be inflated between device becomes, thus when making air pump work, the atmospheric pressure value that display unit can not detect according to baroceptor accurately estimates the atmospheric pressure value of tire or other pressurized containers.
Summary of the invention
Technical problem to be solved by this invention is, for the above-mentioned deficiency of prior art, proposes a kind ofly accurately can show the digital display air pump being inflated device atmospheric pressure value in real time.
The technological scheme that the present invention solves the employing of its technical problem proposes a kind of digital display air pump, and it comprises
Direct current load module, for receiving the direct current of outside input;
Direct current motor, air compressor; The work of described direct current motor band engine-driven air compressor with to being inflated device inflation, described in be inflated between device with air compressor and be connected by tracheae;
Baroceptor, is connected to air compressor and is inflated between device for detecting air compressor and being inflated the sampling atmospheric pressure value between device;
Control module, the sampling atmospheric pressure value exported for receiving baroceptor also exports accurate atmospheric pressure value after treatment to display modular;
Described control module processes sampling atmospheric pressure value in the following way to obtain accurate atmospheric pressure value:
When air pump does not start, the first sampling atmospheric pressure value P of record baroceptor
11; Now, the first actual pressure value P of device inside is inflated
21to sample atmospheric pressure value P with first
11equal;
After air pump starts in 3 to 10 seconds, the second sampling atmospheric pressure value P of record baroceptor
12, and obtain direct current motor first rotating speed n according to the period of change of baroceptor sampling air pressure
1;
The real-time change cycle according to baroceptor sampling air pressure draws direct current motor real-time rotate speed n, and detects real-time sampling atmospheric pressure value P, according to formula P '=P-((P by baroceptor
12-P
11) * P
12* n
2)/(n
1 2* P) draw and be inflated the accurate atmospheric pressure value P ' of device.
Further, described control module is single-chip microcomputer, dsp chip or PLC.
Further, described digital display air pump also comprises the break-make control module be arranged between direct current load module and direct current motor, and described break-make control module is electrically connected on control module, for the break-make control signal break-make exported according to control module; Be electrically connected on the load module of control module, in order to setting atmospheric pressure value is inputed to control module; Described control module compares setting atmospheric pressure value and the accurate atmospheric pressure value being inflated device, and when the accurate atmospheric pressure value being inflated device is less than setting atmospheric pressure value, control module makes the conducting of break-make control module; When the accurate atmospheric pressure value being inflated device is more than or equal to setting atmospheric pressure value, control module makes break-make control module disconnect.
Further, described load module is button or touch screen.
Further, described break-make control module adopts metal-oxide-semiconductor as control gear.
The present invention also provides a kind of accurate acquisition to be inflated the method for device air pressure, and it comprises step:
S1: detect the first sampling atmospheric pressure value P when not starting by baroceptor
11; Baroceptor is connected to air compressor and is inflated between device for detecting air compressor and being inflated the sampling atmospheric pressure value between device;
S2: after starting in 3 to 10 seconds, detects the second sampling atmospheric pressure value P12 by baroceptor, and draws direct current motor first rotating speed n according to the period of change of baroceptor sampling air pressure
1;
S3: after starting completely, the real-time change cycle according to baroceptor sampling air pressure draws direct current motor real-time rotate speed n, and detects real-time sampling atmospheric pressure value P, according to formula P '=P-((P by baroceptor
12-P
11) * P
12* n
2)/(n
1 2* P) draw and be inflated the accurate atmospheric pressure value P ' of device.
The sampling air pressure that the present invention is detected by special processing baroceptor in control module, the real-time atmospheric pressure value being inflated device that control module is exported is more accurate, and person easy to use judges.The present invention simultaneously makes user without the need to waiting for by air pump by arranging break-make control module, automatically can disconnect air compressor when the real-time air pressure being inflated device reaches preset pressure value, saves manpower and man-hour.
Accompanying drawing explanation
Fig. 1 is the circuit theory schematic diagram of digital display air pump first of the present invention preferred embodiment;
Fig. 2 is in one embodiment of the invention, the change oscillogram of baroceptor sampling air pressure;
Fig. 3 is the circuit theory schematic diagram of digital display air pump second of the present invention preferred embodiment.
Embodiment
Be below specific embodiments of the invention and by reference to the accompanying drawings, technological scheme of the present invention is further described, but the present invention be not limited to these embodiments.
Please refer to Fig. 1, Fig. 1 is the circuit theory schematic diagram of digital display air pump first of the present invention preferred embodiment.In Fig. 1, digital display air pump comprises direct current load module 1, for receiving the direct current of outside input; Direct current motor 2, air compressor 3, direct current motor 2 is with engine-driven air compressor 3 to work to inflate to being inflated device 4, is inflated between device 4 with air compressor 3 and is connected by tracheae 5; Baroceptor 6 be connected to air compressor 3 and be inflated between device 4 for detect air compressor 3 and be inflated between device 4 sampling atmospheric pressure value; Control module 7, the sampling atmospheric pressure value exported for receiving baroceptor 6 also exports accurate atmospheric pressure value after treatment to display modular 8.
In the present invention, control module processes sampling atmospheric pressure value in the following way to obtain accurate atmospheric pressure value:
(1) when air pump does not start, the first sampling atmospheric pressure value P of record baroceptor 6
11; Now, the first actual pressure value P of device 4 inside is inflated
21to sample atmospheric pressure value P with first
11equal;
(2) air pump starts in latter 3 to 10 seconds, and the sampling atmospheric pressure value of baroceptor 6 is changed to the second sampling atmospheric pressure value P
12, and due to the time shorter, the actual pressure value being inflated device 4 inside does not also change, and is still P
21.Now obtain baroceptor 6 sample atmospheric pressure value be inflated the difference DELTA P=P of the inner actual pressure value of device 4
12-P
11.
(3) after air pump starts in 3 to 10 seconds, direct current motor 2 first rotating speed n is drawn according to the sample period of change of air pressure of baroceptor 6
1.
In one embodiment, baroceptor 6 sample air pressure change oscillogram as shown in Figure 2.In Fig. 2, in the change waveform of sampling air pressure, each cycle comprises 3 crests, and namely each cycle represents that direct current motor 2 rotates a circle, and is also a gas replenishment process of air compressor 3.The time in sampling pressure change waveform one cycle is T, namely represents direct current motor 2 and rotates a circle and need used time T, can obtain direct current motor 2 first rotating speed n accordingly
1.
(4) according to the basic principle of fluid mechanics and Electrical Motor, baroceptor 6 is sampled atmospheric pressure value and the difference DELTA P=K*n being inflated the inner actual pressure value of device 4
1* n
1/ P.P represents the atmospheric pressure value that baroceptor 6 samples, and K is scaling factor.This formula is substituted into Δ P=P
12-P
11, can obtain, P
12-P
11=K*n
1* n
1/ P
12, now can obtain the concrete numerical value of Proportional coefficient K, K=[(P
12-P
11) * P
12]/(n
1* n
1).
(5) baroceptor 6 is in sampling process, and its real-time sampling atmospheric pressure value is designated as P, is n according to direct current motor 2 real-time rotate speed that step (3) obtains, and the accurate atmospheric pressure value P ' that now can obtain being inflated device is:
P’＝P-((P
12-P
11)*P
12*n
2)/(n
1 2*P)；
Namely this accurate atmospheric pressure value P ' is exported to display modular 8 and is not easy to use person and recognizes in real time and be inflated device 4 atmospheric pressure value accurately by control module 7.
Whether in order to save manpower, make user be inflated device in the other Real Time Observation of air pump be full of without the need to waiting for when air-pump inflating, the present invention also provides the second preferred embodiment.As shown in Figure 3, Fig. 3 is the circuit theory schematic diagram of digital display air pump second of the present invention preferred embodiment.Be with the difference of the first preferred embodiment, break-make control module 9 is connected with between direct current load module 1 and direct current motor 2 in second preferred embodiment, break-make control module 9 is electrically connected on control module 7, for the break-make control signal break-make exported according to control module 7, thus control the break-make of direct current motor 2.Also comprise load module 10, setting atmospheric pressure value is inputed to control module 7 for the setting according to user by load module 10.
Control module 7 compares setting atmospheric pressure value and the accurate atmospheric pressure value P ' being inflated device, and when the accurate atmospheric pressure value P ' being inflated device 6 is less than setting atmospheric pressure value, control module 7 makes break-make control module 9 conducting; When the accurate atmospheric pressure value P ' being inflated device 6 is more than or equal to setting atmospheric pressure value, control module 7 makes break-make control module 9 disconnect.
When adopting this kind of control mode, user, without the need to waiting for by air pump, can disconnect motor and air compressor automatically when being inflated after device internal air pressure value reaches setting atmospheric pressure value.
Further, in the present embodiment, break-make control module adopts metal-oxide-semiconductor as control gear.
Load module can be button, touch screen or other input devices.
Control module can single-chip microcomputer, dsp chip or PLC etc. as control gear.
The present invention also provides a kind of accurate acquisition to be inflated the method for device air pressure, and it comprises step:
S1: detect the first sampling atmospheric pressure value P when not starting by baroceptor
11; Baroceptor is connected to air compressor and is inflated between device for detecting air compressor and being inflated the sampling atmospheric pressure value between device;
Now, the first actual pressure value P of device inside is inflated
21to sample atmospheric pressure value P with first
11equal;
S2: after starting in 3 to 10 seconds, detects the second sampling atmospheric pressure value P by baroceptor
12, and draw direct current motor first rotating speed n according to the period of change of baroceptor sampling air pressure
1;
S3: after starting completely, the real-time change cycle according to baroceptor sampling air pressure draws direct current motor real-time rotate speed n, and detects real-time sampling atmospheric pressure value P, according to formula P '=((P by baroceptor
12-P
11) * P
12* n
2* P)/(n
1 2) draw and be inflated the accurate atmospheric pressure value P ' of device.
Specific embodiment described herein is only to the explanation for example of the present invention's spirit.Those skilled in the art can make various amendment or supplement or adopt similar mode to substitute to described specific embodiment, but can't depart from spirit of the present invention or surmount the scope that appended claims defines.
Claims (6)
1. a digital display air pump, it comprises:
Direct current load module, for receiving the direct current of outside input;
Direct current motor, air compressor; The work of described direct current motor band engine-driven air compressor with to being inflated device inflation, described in be inflated between device with air compressor and be connected by tracheae;
Baroceptor, is connected to air compressor and is inflated between device for detecting air compressor and being inflated the sampling atmospheric pressure value between device; It is characterized in that: also comprise control module, the sampling atmospheric pressure value exported for receiving baroceptor also exports accurate atmospheric pressure value after treatment to display modular; Described control module processes sampling atmospheric pressure value in the following way to obtain accurate atmospheric pressure value:
When air pump does not start, the first sampling atmospheric pressure value P of record baroceptor
11; Now, the first actual pressure value P of device inside is inflated
21to sample atmospheric pressure value P with first
11equal;
After air pump starts in 3 to 10 seconds, the second sampling atmospheric pressure value P of record baroceptor
12, and obtain direct current motor first rotating speed n according to the period of change of baroceptor sampling air pressure
1;
The real-time change cycle according to baroceptor sampling air pressure draws direct current motor real-time rotate speed n, and detects real-time sampling atmospheric pressure value P, according to formula P '=P-((P by baroceptor
12-P
11) * P
12* n
2)/(n
1 2* P) draw and be inflated the accurate atmospheric pressure value P ' of device.
2. digital display air pump as claimed in claim 1, is characterized in that: described control module is single-chip microcomputer, dsp chip or PLC.
3. digital display air pump as claimed in claim 1, it is characterized in that: described digital display air pump also comprises the break-make control module be arranged between direct current load module and direct current motor, described break-make control module is electrically connected on control module, for the break-make control signal break-make exported according to control module; Be electrically connected on the load module of control module, in order to setting atmospheric pressure value is inputed to control module; Described control module compares setting atmospheric pressure value and the accurate atmospheric pressure value being inflated device, and when the accurate atmospheric pressure value being inflated device is less than setting atmospheric pressure value, control module makes the conducting of break-make control module; When the accurate atmospheric pressure value being inflated device is more than or equal to setting atmospheric pressure value, control module makes break-make control module disconnect.
4. digital display air pump as claimed in claim 3, is characterized in that: described load module is button or touch screen.
5. digital display air pump as claimed in claim 3, is characterized in that: described break-make control module adopts metal-oxide-semiconductor as control gear.
6. accurately obtain the method being inflated device air pressure, it is characterized in that: comprise step:
S1: detect the first sampling atmospheric pressure value P when not starting by baroceptor
11; Baroceptor is connected to air compressor and is inflated between device for detecting air compressor and being inflated the sampling atmospheric pressure value between device;
S2: after starting in 3 to 10 seconds, detects the second sampling atmospheric pressure value P by baroceptor
12, and draw direct current motor first rotating speed n according to the period of change of baroceptor sampling air pressure
1;
S3: after starting completely, the real-time change cycle according to baroceptor sampling air pressure draws direct current motor real-time rotate speed n, and detects real-time sampling atmospheric pressure value P, according to formula P '=P-((P by baroceptor
12-P
11) * P
12* n
2)/(n
1 2* P) draw and be inflated the accurate atmospheric pressure value P ' of device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210191406.3A CN102691639B (en) | 2012-06-05 | 2012-06-05 | Digital display air pump and method for accurately obtaining air pressure of inflated device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210191406.3A CN102691639B (en) | 2012-06-05 | 2012-06-05 | Digital display air pump and method for accurately obtaining air pressure of inflated device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102691639A CN102691639A (en) | 2012-09-26 |
| CN102691639B true CN102691639B (en) | 2015-02-04 |
Family
ID=46857316
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210191406.3A Active CN102691639B (en) | 2012-06-05 | 2012-06-05 | Digital display air pump and method for accurately obtaining air pressure of inflated device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102691639B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108918016B (en) * | 2018-05-04 | 2020-04-14 | 宁波宝工电器有限公司 | Air pump air pressure detection method |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19652546A1 (en) * | 1996-12-17 | 1998-06-18 | Sp Reifenwerke Gmbh | Medium for sealing tyres at accidents |
| US6067850A (en) * | 1997-07-09 | 2000-05-30 | Lang; Yu | Fast and accurate tire pressure charge controller |
| US6838983B1 (en) * | 2003-08-27 | 2005-01-04 | Alex Yung Kan Wong | Precision inflation device |
| CN2740496Y (en) * | 2004-09-20 | 2005-11-16 | 合勤电器（深圳）有限公司 | Digital pneumatic system |
| CN2806819Y (en) * | 2005-06-14 | 2006-08-16 | 朱景贤 | Tyre aerator |
| CN201198302Y (en) * | 2008-04-09 | 2009-02-25 | 东莞市瑞柯电机有限公司 | Tyre inflating control gun |
| CN201417197Y (en) * | 2009-04-24 | 2010-03-03 | 东莞世谊电子有限公司 | Digital-display air pressure induction device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002225686A (en) * | 2001-01-31 | 2002-08-14 | Tokico Ltd | Compressed gas filling device and compressed gas filling method |
-
2012
- 2012-06-05 CN CN201210191406.3A patent/CN102691639B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19652546A1 (en) * | 1996-12-17 | 1998-06-18 | Sp Reifenwerke Gmbh | Medium for sealing tyres at accidents |
| US6067850A (en) * | 1997-07-09 | 2000-05-30 | Lang; Yu | Fast and accurate tire pressure charge controller |
| US6838983B1 (en) * | 2003-08-27 | 2005-01-04 | Alex Yung Kan Wong | Precision inflation device |
| CN2740496Y (en) * | 2004-09-20 | 2005-11-16 | 合勤电器（深圳）有限公司 | Digital pneumatic system |
| CN2806819Y (en) * | 2005-06-14 | 2006-08-16 | 朱景贤 | Tyre aerator |
| CN201198302Y (en) * | 2008-04-09 | 2009-02-25 | 东莞市瑞柯电机有限公司 | Tyre inflating control gun |
| CN201417197Y (en) * | 2009-04-24 | 2010-03-03 | 东莞世谊电子有限公司 | Digital-display air pressure induction device |
Non-Patent Citations (1)
| Title |
|---|
| JP特开2002-225686A 2002.08.14 * |
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| Publication number | Publication date |
|---|---|
| CN102691639A (en) | 2012-09-26 |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: The invention relates to a digital display air pump and a method for accurately obtaining the air pressure of an inflated device Effective date of registration: 20210824 Granted publication date: 20150204 Pledgee: Bank of China Limited by Share Ltd. Ningbo Yinzhou branch Pledgor: NINGBO YINZHOU IKA AUTOMOTIVE MANUFACTURING Co. Registration number: Y2021330001210 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
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Date of cancellation: 20230214 Granted publication date: 20150204 Pledgee: Bank of China Limited by Share Ltd. Ningbo Yinzhou branch Pledgor: NINGBO YINZHOU IKA AUTOMOTIVE MANUFACTURING Co. Registration number: Y2021330001210 |
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| PC01 | Cancellation of the registration of the contract for pledge of patent right |