CN102494173B - Digitized negative pressure adjusting device - Google Patents
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- CN102494173B CN102494173B CN 201110422915 CN201110422915A CN102494173B CN 102494173 B CN102494173 B CN 102494173B CN 201110422915 CN201110422915 CN 201110422915 CN 201110422915 A CN201110422915 A CN 201110422915A CN 102494173 B CN102494173 B CN 102494173B
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- 230000005540 biological transmission Effects 0.000 claims abstract description 19
- 230000006835 compression Effects 0.000 claims abstract description 10
- 238000007906 compression Methods 0.000 claims abstract description 10
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 3
- 238000009413 insulation Methods 0.000 claims description 3
- 229910052710 silicon Inorganic materials 0.000 claims description 3
- 239000010703 silicon Substances 0.000 claims description 3
- 230000003796 beauty Effects 0.000 abstract description 3
- 230000001105 regulatory effect Effects 0.000 abstract description 3
- 230000001276 controlling effect Effects 0.000 abstract 2
- 238000013016 damping Methods 0.000 abstract 1
- 230000001502 supplementing effect Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 6
- 239000002537 cosmetic Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 230000001225 therapeutic effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
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Abstract
Te invention relates to a digitized negative pressure adjusting device, which includes a regulator used for controlling negative pressure in a storage cavity, a pressure sensor used for measuring the negative pressure in the storage cavity, and a digital control system used for controlling the operation of the regulator, wherein the regulator includes a transmission cavity, a DC motor, an eccentric convex loader, a push rod, a compression spring, a cone valve core, a pressure supplementing and noise damping valve and the like; the pressure sensor can be arranged on a circuit board of the digital control system, connected to the storage cavity through an air pipe, and used for measuring the negative pressure of gas in the storage cavity; the DC motor of the regulator is connected with the driving of the digital control system, and used for regulating and setting the negative pressure through a local button on the digital control system or a remote control end; and a display is used fordisplaying the negative pressure value of the storage cavity. The digitized negative pressure adjusting device provided by the invention can be applied in instruments and equipment utilizing the gas negative pressure principle to realize medical treatment and beauty treatment, and can be used for regulating the negative pressure value of gas in the storage cavity to the pre-arranged negative pressure value.
Description
Technical field
The present invention relates to the control formula regulating system field of non electrical quantity, a kind of gas negative pressure regulator of Digital Control specifically, it can be applicable to utilize the gas principle of negative pressure to realize in the instrument and equipment of medical treatment and cosmetic purpose.
Background technique
The instrument and equipment that reaches medical treatment and cosmetic result along with increasing application gas principle of negative pressure is had higher requirement to clinical effectiveness and the safety of equipment by clinically use, and equipment puts on the negative pressure value on human body skin surface should be precisely controlled.At present, generally use manual modulation valve to regulate the output negative pressure value of instrument and equipment, this brings two aspect problems: first negative pressure value is in a kind of open loop state of a control forever, and it two is to carry out program control to negative pressure value.Consequently the actual therapeutic effect of instrument and equipment does not reach its design effect, and because can not be program control, can't realize more high-grade therapeutic scheme.
The Direct Digital valve of prior art has two kinds: a kind of simple solenoid directional control valve for the control of pulse duration modulation (PWM) technology, and the T same period is constant for its switch, and dutycycle is by leading pulsewidth t
ONDetermine that output flow is proportional to t
ON, because the unlatching of valve needs certain hour, i.e. t
ON/ T has minimum scale, causes certain dead band flow than this valve, and Kong Zhi flow pulse amount is very big in addition; Another kind of Direct Digital valve is to adopt conventional rotating stepper motor and screw mandrel one nut to pay the driving spool, and this a kind of Direct Digital valve is excellent more a lot of than preceding kind, but its technological requirement height, so the uncontrollable desired level of cost.
The method that the Direct Digital valve of prior art directly moves on above-mentioned medical treatment and the beauty apparatus equipment is obviously unworkable, the first, if adopt the simple solenoid directional control valve of pulse width modulating technology, because pulsed quantity is big, permanent negatively pressurized static index does not meet the demands, and another technical costs is expensive; The second, be that volume is big, can't satisfy the requirement of the light miniaturization of product; The 3rd, be still open loop type control.
At above technical problem, must otherwise designed be specifically designed to the negative pressure regulator that satisfies medical treatment and beauty treatment fields demand.
Summary of the invention
In order to overcome the deficiencies in the prior art, the present invention proposes the digitizing negative pressure adjusting device that a kind of cost is low, volume is little.
In order to achieve the above object, the technical solution adopted in the present invention is as follows:
The digitizing negative pressure adjusting device, it comprises the regulator for the negative pressure in the control storage chamber, for the pressure transducer of measuring the negative pressure in the storage chamber, and the numerical control system that is used for controlled adjuster work;
Described numerical control system comprises man-machine interface, voltage frequency conversioning circuit, microprocessor, and pressure transducer electrically connects by voltage frequency conversioning circuit and microprocessor, and man-machine interface and microprocessor electrically connect;
Man-machine interface, for the negative pressure value of setting gas in the storage chamber, and a negative pressure value of setting is stored in the microprocessor;
Voltage frequency conversioning circuit, the corresponding electrical signal of negative pressure value of gas is converted to frequency signal in the current storage chamber that is used for pressure transducer is measured, and this frequency signal is input in the microprocessor;
Microprocessor is used for frequency signal is converted to the negative pressure value of gas in the current storage chamber, and the negative pressure value of gas in the current storage chamber and the negative pressure value of setting are compared, controlled adjuster work, the negative pressure value that makes the negative pressure value of the interior gas of current storage chamber equal to set.
Preferably, described regulator comprises negative pressure introducing joint, valve core case, seal ring, taper valve core, compression spring, transmission cavity, ftercompction noise reduction valve, support, motor, pushing block, protruding year of off-centre, positive stop lug boss, position-limited lever and push rod; Motor is fixed on a side of support, and the live axle of motor was connected with eccentric protruding year; Transmission cavity is fixed on the top of support, and transmission cavity is an insulation hollow housing, offers first through hole on the sidewall of transmission cavity, and the ftercompction noise reduction valve is installed on first through hole; One end of taper valve core passes second through hole of compression spring, transmission cavity, support from top to bottom successively, and fixedlys connected with the top of pushing block, and the compression spring is positioned at transmission cavity; The other end of taper valve core is taper, and the end of the other end of taper valve core is installed to by seal ring in the end of valve core case, and the other end of valve core case is fixedlyed connected with negative pressure introducing joint; The quantity of positive stop lug boss is two, is arranged on the support, and two positive stop lug boss lay respectively at protruding year both sides of off-centre; Position-limited lever is fixedlyed connected with eccentric protruding year sidewall, and position-limited lever is positioned at the below of positive stop lug boss, and when the eccentric protruding idling of motor driving was moving, position-limited lever collision positive stop lug boss made motor positive and inverse; Push rod passes the both sides of pushing block, and is placed on protruding year the eccentric shaft of off-centre, and pushing block is positioned at eccentric protruding year top.
Preferably, microprocessor is compared the negative pressure value of gas in the current storage chamber and the negative pressure value of setting, controlled adjuster work, make the negative pressure value that the negative pressure value of gas equals to set in the current storage chamber be: microprocessor is compared the negative pressure value of the interior gas of current storage chamber and the negative pressure value of setting, obtain the margin of error and error rate, and calculate gap required between the other end of taper valve core and the valve core case by fuzzy algorithmic approach, and then the driving amount of calculating motor rotation, the control motor rotates by this driving amount, regulate the other end of taper valve core and the gap between the valve core case, the negative pressure value that makes the negative pressure value of gas in the current storage chamber equal to set.
Preferably, described motor is direct current generator.
Preferably, microprocessor with the negative pressure value that frequency signal is converted to gas in the current storage chamber is: microprocessor adopts the piece-wise linearization algorithm that the negative pressure value of gas in frequency signal and the current storage chamber is carried out match, obtains the negative pressure value of gas in the current storage chamber.
Preferably, described man-machine interface comprises local keys of key, remote control terminal, and local keys of key, remote control terminal electrically connect with microprocessor respectively; Local keys of key, remote control terminal are all for the negative pressure value of setting gas in the storage chamber.
Preferably, described man-machine interface comprises that also for the display device that shows the negative pressure value of gas in the current storage chamber, display device and microprocessor electrically connect.
Preferably, described pressure transducer is the silicon pressure sensor of band temperature correction.
The present invention has following beneficial effect:
1. the controller structure of control negative pressure is simple, volume is little, cost is low;
2. numerical control system is multiple functional, both can realize program control exchanges data again by key assignments, the on-the-spot demonstration;
3. the fuzzy control method that lacks the control object under the precise figures model makes system debug easily.
Description of drawings
Fig. 1 is the block diagram of the digitizing negative pressure adjusting device of preferred embodiment of the present invention;
Fig. 2 is the functional-block diagram of the digitizing negative pressure adjusting device of preferred embodiment of the present invention;
Fig. 3 is the structural representation of the regulator of the digitizing negative pressure adjusting device of preferred embodiment of the present invention.
Embodiment
Below, by reference to the accompanying drawings and embodiment, the present invention is described further, so that clearerly understand the present invention's technological thought required for protection.
As shown in Figure 1 to Figure 3, a kind of digitizing negative pressure adjusting device, it comprises the regulator for the negative pressure in the control storage chamber, for the pressure transducer of measuring the negative pressure in the storage chamber, and the numerical control system that is used for controlled adjuster work.Pressure transducer can be located on the circuit board of numerical control system, is connected to storage chamber by tracheae, and the back pressure end of pressure transducer leads directly to atmosphere.
Described numerical control system comprises man-machine interface, voltage frequency conversioning circuit, microprocessor, and pressure transducer electrically connects by voltage frequency conversioning circuit and microprocessor, and man-machine interface and microprocessor electrically connect;
Man-machine interface, for the negative pressure value of setting gas in the storage chamber, and a negative pressure value of setting is stored in the microprocessor;
Voltage frequency conversioning circuit, the corresponding electrical signal of negative pressure value of gas is converted to frequency signal in the current storage chamber that is used for pressure transducer is measured, and this frequency signal is input in the microprocessor;
Microprocessor is used for frequency signal is converted to the negative pressure value of gas in the current storage chamber, and the negative pressure value of gas in the current storage chamber and the negative pressure value of setting are compared, controlled adjuster work, the negative pressure value that makes the negative pressure value of the interior gas of current storage chamber equal to set.
Concrete, described regulator comprises negative pressure introducing joint 1, valve core case 2, seal ring 3, taper valve core 4, compression spring 5, transmission cavity 6, ftercompction noise reduction valve 7, support 8, motor 9, pushing block 13, off-centre protruding year 14, positive stop lug boss 10, position-limited lever 11 and push rod 12.Motor 9 is fixed on a side of support 8, and the live axle 901 of motor 1 was connected with eccentric protruding year 14; Transmission cavity 6 is fixed on the top of support 8, and transmission cavity 6 is an insulation hollow housing, offers first through hole (figure does not look) on the sidewall of transmission cavity 6, and ftercompction noise reduction valve 7 is installed on first through hole; One end 402 of taper valve core 4 passes second through hole 801 of compression spring 5, transmission cavity 6, support 8 from top to bottom successively, and fixedlys connected with the top of pushing block 13, and compression spring 5 is positioned at transmission cavity 6; The other end 401 of taper valve core 4 is taper, and the end of the other end 401 of taper valve core 4 is installed to by seal ring 3 in the end of valve core case 2, and the other end of valve core case 2 is fixedlyed connected with negative pressure introducing joint 1; The quantity of positive stop lug boss 10 is two, is arranged on the support 8, and two positive stop lug boss 10 lay respectively at protruding year 14 both sides of off-centre; Position-limited lever 11 is fixedlyed connected with eccentric protruding year 14 sidewall, and position-limited lever 11 is positioned at the below of positive stop lug boss 10, and when motor 9 drove rotation in eccentric protruding year 14, position-limited lever 11 collision positive stop lug boss 10 made motor 9 clockwise and anticlockwise; Push rod 12 passes the both sides of pushing block 13, and is placed on protruding year 14 the eccentric shaft 1401 of off-centre, and pushing block 13 is positioned at eccentric protruding year 14 top.Negative pressure is introduced joint 1 can be connected to storage chamber to be measured and control by a tracheae.
The motor 1 of present embodiment adopts direct current generator, and pressure transducer adopts the silicon pressure sensor of band temperature correction.
Microprocessor is compared the negative pressure value of gas in the current storage chamber and the negative pressure value of setting, controlled adjuster work, make the detailed process of the negative pressure value that the negative pressure value of gas equals to set in the current storage chamber be: microprocessor is compared the negative pressure value of the interior gas of current storage chamber and the negative pressure value of setting, obtain the margin of error and error rate, and calculate gap required between the other end of taper valve core and the valve core case by fuzzy algorithmic approach, and then the driving amount of calculating motor rotation, the control motor rotates by this driving amount, regulate the other end of taper valve core and the gap between the valve core case, the negative pressure value that makes the negative pressure value of gas in the current storage chamber equal to set.
Microprocessor with the detailed process that frequency signal is converted to the negative pressure value of gas in the current storage chamber is: microprocessor adopts the piece-wise linearization algorithm that the negative pressure value of gas in frequency signal and the current storage chamber is carried out match, obtains the negative pressure value of gas in the current storage chamber.
The man-machine interface of present embodiment also has Presentation Function.Be specially, man-machine interface comprises display device, local keys of key, remote control terminal, and display device, local keys of key, remote control terminal electrically connect with microprocessor respectively; Local keys of key, remote control terminal are all for the negative pressure value of setting gas in the storage chamber; Display device is used for showing the negative pressure value of gas in the current storage chamber.
The concrete principle process of present embodiment is as follows:
As shown in Figure 1, set the negative pressure value (representing with " P " among the figure) of gas in the storage chamber by local keys of key input or remote control terminal, pressure transducer detects the corresponding voltage signal of negative pressure value of gas in the current storage chamber, voltage signal converts frequency signal to through voltage frequency conversioning circuit, because the pass of frequency and negative pressure value is a non-linear relation, microprocessor adopts the piece-wise linearization algorithm that the negative pressure value of gas in frequency signal and the current storage chamber is carried out match, thereby obtain the negative pressure value of gas in the current storage chamber, this value is shown at display device.Simultaneously, the negative pressure value of gas and the negative pressure value of setting compare in the current storage chamber, obtain margin of error e and error rate e, obtain the gap length between the taper valve core 4 and valve core case 2 as shown in Figure 3 by fuzzy algorithmic approach, and then calculate the driving amount that motor 9 turns to, microprocessor produces and drives signal, control motor 9 rotates, promoting taper valve core 4 moves up and down, be met the taper valve core 4 of control requirement and the size of gaps between the valve core case 2, the gas negative pressure value in the storage chamber is equated with the negative pressure value of setting.
Because having the regulator of direct current generator is a non-linear serious control object, adopt traditional PID to realize that closed loop control is the good dynamic and static properties that can't be effective, therefore present embodiment adopts with error and error rate as input, and the taper valve core of regulator carries out closed loop control as the FUZZY ALGORITHMS FOR CONTROL of controlled quentity controlled variable.
For a person skilled in the art, can make other various corresponding changes and distortion according to technological scheme described above and design, and these all changes and distortion should belong within the protection domain of claim of the present invention all.
Claims (7)
1. the digitizing negative pressure adjusting device comprises for the regulator of the negative pressure in the control storage chamber, it is characterized in that, also comprise for the pressure transducer of measuring the negative pressure in the storage chamber, and the numerical control system that is used for controlled adjuster work;
Described numerical control system comprises man-machine interface, voltage frequency conversioning circuit, microprocessor, and pressure transducer electrically connects by voltage frequency conversioning circuit and microprocessor, and man-machine interface and microprocessor electrically connect;
Man-machine interface, for the negative pressure value of setting gas in the storage chamber, and a negative pressure value of setting is stored in the microprocessor;
Voltage frequency conversioning circuit, the corresponding electrical signal of negative pressure value of gas is converted to frequency signal in the current storage chamber that is used for pressure transducer is measured, and this frequency signal is input in the microprocessor;
Microprocessor is used for frequency signal is converted to the negative pressure value of gas in the current storage chamber, and the negative pressure value of gas in the current storage chamber and the negative pressure value of setting are compared, controlled adjuster work, the negative pressure value that makes the negative pressure value of the interior gas of current storage chamber equal to set;
Described regulator comprises negative pressure introducing joint, valve core case, seal ring, taper valve core, compression spring, transmission cavity, ftercompction noise reduction valve, support, motor, pushing block, protruding year of off-centre, positive stop lug boss, position-limited lever and push rod; Motor is fixed on a side of support, and the live axle of motor was connected with eccentric protruding year; Transmission cavity is fixed on the top of support, and transmission cavity is an insulation hollow housing, offers first through hole on the sidewall of transmission cavity, and the ftercompction noise reduction valve is installed on first through hole; One end of taper valve core passes second through hole of compression spring, transmission cavity, support from top to bottom successively, and fixedlys connected with the top of pushing block, and the compression spring is positioned at transmission cavity; The other end of taper valve core is taper, and the end of the other end of taper valve core is installed to by seal ring in the end of valve core case, and the other end of valve core case is fixedlyed connected with negative pressure introducing joint; The quantity of positive stop lug boss is two, is arranged on the support, and two positive stop lug boss lay respectively at protruding year both sides of off-centre; Position-limited lever is fixedlyed connected with eccentric protruding year sidewall, and position-limited lever is positioned at the below of positive stop lug boss, and when the eccentric protruding idling of motor driving was moving, position-limited lever collision positive stop lug boss made motor positive and inverse; Push rod passes the both sides of pushing block, and is placed on protruding year the eccentric shaft of off-centre, and pushing block is positioned at eccentric protruding year top.
2. digitizing negative pressure adjusting device as claimed in claim 1, it is characterized in that, microprocessor is compared the negative pressure value of gas in the current storage chamber and the negative pressure value of setting, controlled adjuster work, make the negative pressure value that the negative pressure value of gas equals to set in the current storage chamber be: microprocessor is compared the negative pressure value of the interior gas of current storage chamber and the negative pressure value of setting, obtain the margin of error and error rate, and calculate gap required between the other end of taper valve core and the valve core case by fuzzy algorithmic approach, and then the driving amount of calculating motor rotation, the control motor rotates by this driving amount, regulate the other end of taper valve core and the gap between the valve core case, the negative pressure value that makes the negative pressure value of gas in the current storage chamber equal to set.
3. digitizing negative pressure adjusting device as claimed in claim 1 is characterized in that, described motor is direct current generator.
4. digitizing negative pressure adjusting device as claimed in claim 1, it is characterized in that, microprocessor with the negative pressure value that frequency signal is converted to gas in the current storage chamber is: microprocessor adopts the piece-wise linearization algorithm that the negative pressure value of gas in frequency signal and the current storage chamber is carried out match, obtains the negative pressure value of gas in the current storage chamber.
5. as each described digitizing negative pressure adjusting device of claim 1-4, it is characterized in that described man-machine interface comprises local keys of key, remote control terminal, local keys of key, remote control terminal electrically connect with microprocessor respectively; Local keys of key, remote control terminal are all for the negative pressure value of setting gas in the storage chamber.
6. digitizing negative pressure adjusting device as claimed in claim 5 is characterized in that, described man-machine interface comprises that also for the display device that shows the negative pressure value of gas in the current storage chamber, display device and microprocessor electrically connect.
7. as each described digitizing negative pressure adjusting device of claim 1-4, it is characterized in that described pressure transducer is the silicon pressure sensor of band temperature correction.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110422915 CN102494173B (en) | 2011-12-15 | 2011-12-15 | Digitized negative pressure adjusting device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110422915 CN102494173B (en) | 2011-12-15 | 2011-12-15 | Digitized negative pressure adjusting device |
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| CN102494173A CN102494173A (en) | 2012-06-13 |
| CN102494173B true CN102494173B (en) | 2013-09-04 |
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| CN112139448A (en) * | 2019-06-28 | 2020-12-29 | 共享智能铸造产业创新中心有限公司 | Be applied to negative pressure automatic regulating apparatus of 3D printer |
| CN112494736A (en) * | 2021-01-18 | 2021-03-16 | 山东创康生物科技有限公司 | Pressure controller for wound surface negative pressure treatment |
| CN115818260B (en) * | 2022-12-08 | 2023-11-03 | 河南鼎盛铝业有限公司 | Plug flow generating device and pneumatic conveying system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US7814932B2 (en) * | 2002-12-18 | 2010-10-19 | David Stinson | Digital pressure gauge |
| KR100506689B1 (en) * | 2003-07-04 | 2005-08-08 | 화 현 손 | auto-change valve apparatus |
| CN200994949Y (en) * | 2007-01-10 | 2007-12-26 | 西安交通大学医学院第一附属医院 | Assembled portable wound therapeutic equipment with negative-pressure aid |
| CN100571795C (en) * | 2007-11-08 | 2009-12-23 | 冯新庆 | Mechanical heart failure dehydration device and its control device |
| CN201170368Y (en) * | 2008-02-03 | 2008-12-24 | 张能练 | An electronically controlled gas valve |
| CN101520379B (en) * | 2009-03-23 | 2011-08-31 | 联合汽车电子有限公司 | Test board for flow rate pressure of pressure regulating valve |
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Address after: 510555 No. 23, Phoenix Fourth Road, Jiulong Industrial Park, Luogang District, Guangzhou City, Guangdong Province Patentee after: Guangzhou Meirei Health Industry Co., Ltd. Address before: 510555 No. 23, Phoenix Fourth Road, Jiulong Industrial Park, Luogang District, Guangzhou City, Guangdong Province Patentee before: Race Medical & Beauty Equipment Co., Ltd. |
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Address after: 510555, No. 23, Fenghuang 4th Road, Kowloon Industrial Park, Huangpu District, Guangzhou City, Guangdong Province Patentee after: Guangzhou Meirei Health Industry Co., Ltd. Address before: 510555 No. 23, Phoenix Fourth Road, Jiulong Industrial Park, Luogang District, Guangzhou City, Guangdong Province Patentee before: Guangzhou Meirei Health Industry Co., Ltd. |
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Denomination of invention: Digitized negative pressure adjusting device Effective date of registration: 20190628 Granted publication date: 20130904 Pledgee: China Co truction Bank Corp Guangzhou economic and Technological Development Zone sub branch Pledgor: Guangzhou Meirei Health Industry Co., Ltd. Registration number: 2019440000245 |
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Date of cancellation: 20200923 Granted publication date: 20130904 Pledgee: China Co. truction Bank Corp Guangzhou economic and Technological Development Zone sub branch Pledgor: RACE MEDICAL & BEAUTY EQUIPMENT Co.,Ltd. Registration number: 2019440000245 |