CN202033150U - Pressure detection system with fine tuning and pressure stabilization functions - Google Patents
Pressure detection system with fine tuning and pressure stabilization functions Download PDFInfo
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- CN202033150U CN202033150U CN2011201360608U CN201120136060U CN202033150U CN 202033150 U CN202033150 U CN 202033150U CN 2011201360608 U CN2011201360608 U CN 2011201360608U CN 201120136060 U CN201120136060 U CN 201120136060U CN 202033150 U CN202033150 U CN 202033150U
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Abstract
A pressure detection system with fine tuning and pressure stabilization functions consists of a control center, an air storage tank, a pipeline circuit, a pressure test station and a pressure tuner. By actuating of a driving mechanism which is arranged adjacent to the pressure tuner, the position change of a driven component of the driving mechanism drives a piston in a gas pressure regulator to generate position change relatively and causes the volume change in the gas pressure regulator, thus further generating pressure change so as to control and provide accurate target gas pressure value in the closed circuit of the pressure detection system.
Description
Technical field
The utility model is relevant a kind of pressure detecting system, especially refers to a kind of pressure detecting system with fine setting voltage stabilizing function.
Background technology
The pressing force sensor is the sensor that is used for measurement gas or fluid pressure intensity, during its work is pressure is converted to electric signal output.Highly to count example, be to measure the indispensable important tool of sea level elevation promptly, pressure transducer then is a most important assembly in the altitude gauge, so that utilize the air pressure change value to record the lifting of sea level elevation.Therefore, the accuracy of pressure sensor senses air pressure change is the big essential factor of altitude gauge quality of concerning.
As shown in Figure 1, be the calcspar of traditional air pressure detection system, this system comprises a control center 10, one air reservoirs, 20, one pressure test stations 40.But this air reservoir 20 connects the pressure test station 40 with airtight chamber 401 with pipe-loop 30, and but this pipe-loop 30 is provided with one first solenoid valve 301, a progressive number pressure valve 302, for example proportion expression pressure valve, and one second solenoid valve 303, this first, second solenoid valve 301,303 and pressure valve 302 are respectively with the digital output/input interface 102 at line connection control center 10.
As desire to measured object, when for example pressure transducer carries out pressure test, at first the controller 101 of this control center 10 is imported a target air pressure value, 600mb for example, after then air reservoir 20 being evacuated to aforesaid atmospheric pressure value with vacuum pump 201, the chamber 401 of ccontaining measured object is closed, with being about to first, second solenoid valve 301,303 open, the start that air in the air reservoir 20 is opened and closed at a high speed via pressure valve 302, and after entering in the airtight chamber 402 apace, immediately with first, second solenoid valve 301,303 close, utilize a pressure gauge 402 to detect the actual pressure value of this chamber 401 again, and the chamber 401 actual pressure values after will detecting via a digital-to-analog translation interface 103 for example show on the screen of computing machine in controller 101.Last measured object is accepted the test of testing tool in chamber 301.
Because this proportion expression pressure valve 302 has approximately ± (± 5mb) error amount, and comparatively accurate air pressure adjustment function can't be provided, this measure will make measured object to 0.5%F.S, and for example the accuracy of pressure sensor senses air pressure change has also produced error.Therefore, have the barometric error value of improving the aforementioned pressure detection system only, can increase the accuracy of measured object when detecting.
The utility model content
The utility model purpose is to provide a kind of pressure detecting system with fine setting voltage stabilizing function, utilize the fine setting voltage regulation way, control and provide the interior atmospheric pressure value accurately of sealed tube line loop of this pressure detecting system, and then increase the accuracy of measured object when detecting.
For achieving the above object, a kind of pressure detecting system with fine setting voltage stabilizing function that the utility model provides comprises:
One control center, it has the controller that can import at least one target air pressure value, and this controller is respectively equipped with a digital output/input interface and a digital-to-analog translation interface;
One air reservoir, connection one are evacuated to air reservoir inside in the vacuum pump of target air pressure value;
One pressure test station, but the airtight chamber of a ccontaining measured object had, establish a pressure gauge that is connected with digital-to-analog translation interface circuit in this pressure test station in addition;
One pressure tuner, its two ends have first, second cylinder chamber, are provided with a piston between this two cylinders chamber, and this piston connects a gear train, this gear train comprises a combined with transmission one driving link, and driving link is further combined with a driven member that can drive piston displacement; Wherein, this gearing and driven member are connected to digital output/input interface with circuit; And
One pipe-loop, its first, second cylinder chamber and chamber that connects air reservoir, pressure tuner respectively forms a loop, wherein be provided with one first solenoid valve between this air reservoir and pressure tuner, and be provided with one second solenoid valve between pressure tuner and pressure test station; Wherein, this first, second solenoid valve is controlled opening or locking of first, second solenoid valve respectively with the digital output/input interface of line connecting controller;
Start by driving mechanism, make driven member because of change in location, and make the piston in the barostat also produce change in location relatively, and cause volume change in the barostat, and then to produce the pressure variation, to use the interior accurate target atmospheric pressure value of loop of controlling and this pressure detecting system being provided.
Described pressure detecting system with fine setting voltage stabilizing function, wherein this controller is computing machine and display.
Described pressure detecting system with fine setting voltage stabilizing function, wherein the circuit of the digital output/input interface of this air reservoir and controller is provided with the vacuum pressure sensor of the atmospheric pressure value in this air reservoir of detection.
Described pressure detecting system with fine setting voltage stabilizing function, but wherein be provided with a progressive number pressure valve between this first solenoid valve and pressure tuner, and this pressure valve is with the digital output/input interface of line connecting controller.
Described pressure detecting system with fine setting voltage stabilizing function, wherein this gearing is a servo motor, and driving link is a screw rod, and driven member is a slide block.
Described pressure detecting system with fine setting voltage stabilizing function, wherein this master and slave moving part is respectively gear, tooth bar, lead screw, worm gear, eccentric wheel, support arm, or cam, connecting rod.
Effect of the present utility model is, the sealed tube line loop of pressure detecting system is further connected a pressure tuner, this pressure tuner utilizes ripple with the ear principle, start by driving mechanism, make the piston in the barostat produce the relative position variation, and after causing the interior volume change of barostat, and then to sealed tube line loop generation pressure fine setting variation, with control and accurate target atmospheric pressure value in the sealed tube line loop of this pressure detecting system is provided, and then reach the accuracy effect of measured object when detecting.
Description of drawings
Fig. 1 is the calcspar of traditional air pressure detection system.
Fig. 2 is the calcspar that the utlity model has the pressure detecting system of fine setting voltage stabilizing function.
Embodiment
The technological means that the utility model is taked provides a kind of pressure detecting system with fine setting voltage stabilizing function, and it comprises:
One control center, it has the controller that can import at least one target air pressure value, and this controller is respectively equipped with a digital output/input interface and a digital-to-analog translation interface;
One air reservoir, it connects a vacuum pump, so that air reservoir inside is evacuated to the target air pressure value;
One pressure test station, but it has the airtight chamber of a ccontaining measured object, establishes a pressure gauge that is connected with digital-to-analog translation interface circuit in this pressure test station in addition;
One pressure tuner, its two ends have first, second cylinder chamber, are provided with a piston between this two cylinders chamber, and this piston connects a gear train, this gear train comprises a combined with transmission one driving link, and driving link is further combined with a driven member that can drive piston displacement; Wherein, this gearing and driven member are connected to digital output/input interface with circuit; And
One pipe-loop, it connects first, second cylinder chamber and chamber of air reservoir, pressure tuner respectively, to form a loop, wherein be provided with one first solenoid valve between this air reservoir and pressure tuner, and be provided with one second solenoid valve between pressure tuner and pressure test station; Wherein, this first, second solenoid valve is respectively with the digital output/input interface of line connecting controller, to control opening or locking of first, second solenoid valve;
Start by driving mechanism, make driven member because of change in location, and make the piston in the barostat also produce change in location relatively, and cause volume change in the barostat, and then to produce the pressure variation, to use the interior accurate target atmospheric pressure value of loop of controlling and this pressure detecting system being provided.
For further disclosing concrete technology contents of the present utility model, at first see also accompanying drawing, wherein, Fig. 1 is the calcspar of traditional air pressure detection system, Fig. 2 is the calcspar that the utlity model has the pressure detecting system of fine setting voltage stabilizing function.
As shown in Figure 2, basically, pressure detecting system of the present utility model is by a control center 1, one air reservoir, 2, one pipe-loop, 3, one pressure test stations 4, and a pressure tuner 5 is formed.
Wherein, control center 1 has a controller 11, for example computing machine and display, and this controller 11 is respectively equipped with a digital output/input interface 111 and a digital-to-analog translation interface 112.This controller 11 can be imported at least one target air pressure value simultaneously, for example 600mb (p1), 800mb (p2), 1000mb (p3).
Pipe-loop 3 connects this air reservoir 2, pressure tuner 5 and pressure test station 4 respectively, to form a loop.But this pipe-loop 3 is provided with one first solenoid valve 31 and a progressive number pressure valve 32, for example proportion expression pressure valve at air reservoir 2 and 5 of pressure tuners; And be provided with one second solenoid valve 33 at pressure tuner 5 and 4 at pressure test station.Wherein, this first, second solenoid valve 31,33 and pressure valve 32 are respectively with the digital output/input interface 111 of line connecting controller 11, so that control opening or locking of this first, second solenoid valve 31,33.
But pressure test station 4 has an airtight chamber 41, can ccontaining measured object in this chamber 41, and pressure transducer for example so that under default force value, carries out every test function of testing tool with measured object, to increase the accuracy of measured object.Wherein, establish a pressure gauge 42 in this pressure test station 4 in addition, be connected with circuit with the digital-to-analog translation interface 112 of controller 1, so that the actual pressure values in the chamber 41 are informed controller 1.
Pressure tuner 5 is a low speed cylinder, first, second cylinder chamber 51,52 at its two ends is connected to pipe-loop 3, make two cylinder chambers 51,52 can keep equipressure, 51,52 of this two cylinders chambers are provided with a piston 53, and this piston 53 connects a gear train 54, and this gear train 54 comprises a gearing 541, for example servo motor is in conjunction with a driving link 542, screw rod for example, this driving link 542 is further combined with driven member 543, for example a slide block.This gearing 541 and driven member are connected to the digital output/input interface 111 of controller 11 with circuit, make this driven member 543 can on driving link 542, produce default change in displacement, and this driven member 543 connects piston 53 with connecting rod 544, make piston 53 can in pressure tuner 5, also produce relative change in displacement, and then make the first cylinder chamber 51 produce volume change.Therefore, by ripple with the ear law, but actuarial goes out the location variation of the driven member 543 of gear train 54, and the volume change of piston 53 in the first cylinder chamber 51, and then the interior atmospheric pressure value accurately of the pipe-loop that is communicated with the first cylinder chamber 51 of control and providing 3.
Wherein, when this master and slave moving part 542,543 is implemented, also be able to gear, tooth bar, lead screw, worm gear, the toggle device that eccentric wheel, support arm are formed, or cam, connecting rod are for it, so that obtain driven member 543 changes positions along driving link 542 intended purposes.
Please consult Fig. 2 again, before address, when chamber 41 is in closed condition, at this moment, first, second solenoid valve 31,33 by locking in opened condition, after but the air that makes the about 600mb of atmospheric pressure value in the air reservoir 2 passes through first solenoid valve 31 or progressive number pressure valve 32, make air enter first, second cylinder chamber 51,52 that pressure tuner 5 is simultaneously, and with air by second solenoid valve 33 to enter in the chamber 41 that is closed condition.Then, inform the actual pressure value of controller 11 these chamber 41 inside via pressure gauge 42 after, this target air pressure value and actual pressure value promptly produce a difference.
At this moment; this controller 11 is with 31 lockings of first solenoid valve; and controller 11 is according to aforesaid difference; and after going out the required shift length of the driven member 543 of gear train 54 according to ripple with the actuarial of ear law; controller 11 starts gearing 541 and drives driving link 542 starts; make driven member 543 along driving link 542 displacements; behind aforesaid shift length; controller 11 is shut down gearing 541; make piston 53 in pressure tuner 5, also in the first cylinder chamber 51, produce volume change because of displacement; and then reach fine setting pipe-loop 3 air pressure inside to the target air pressure value; this controller 11 is with 33 lockings of second solenoid valve; make and keep the target air pressure value in the chamber 41, and with measured object, for example pressure transducer is accepted the test of testing tool in airtight chamber 42.
Then, the aforementioned second target air pressure value of this pressure detecting system foundation, for example 800mb, and the 3rd target air pressure value, for example 1000mb carries out aforementioned testing procedure respectively, can determine the test result of measured object in three target air pressure values that set.
Further, previous embodiment is under the situation with negative pressure, explanation as an example, but the personage who is familiar with this technology all knows, the utlity model has finely tune voltage stabilizing function pressure detecting system also can malleation situation under implement.
So, via enforcement of the present utility model, it is the pressure tuner that the further connection one of the sealed tube line loop of known pressure detecting system is comprised driving mechanism, this pressure tuner utilizes ripple with the ear principle, start by driving mechanism, the driven member that makes driving mechanism is because of change in location, and make the piston in the barostat also produce change in location relatively, and after causing the interior volume change of barostat, and then to produce the pressure variation, with control and accurate target atmospheric pressure value in the loop of this pressure detecting system is provided, and then the accuracy when reaching measured object and in the closed chamber at pressure test station, detecting, thereby overcome the tolerance of known proportion expression pressure valve, and cause the difference of the closed chamber internal cause actual pressure value at pressure test station and target air pressure value to cause error when detecting.
That the utility model disclosed is a kind of of preferred embodiment, such as Ju Bu change or modification and come from technological thought of the present utility model and be have the knack of this technology the people was easy to know by inference, all do not take off claim category of the present utility model.
Claims (6)
1. the pressure detecting system with fine setting voltage stabilizing function is characterized in that, comprising:
One control center, it has the controller that can import at least one target air pressure value, and this controller is respectively equipped with a digital output/input interface and a digital-to-analog translation interface;
One air reservoir, connection one are evacuated to air reservoir inside in the vacuum pump of target air pressure value;
One pressure test station, but the airtight chamber of a ccontaining measured object had, establish a pressure gauge that is connected with digital-to-analog translation interface circuit in this pressure test station in addition;
One pressure tuner, its two ends have first, second cylinder chamber, are provided with a piston between this two cylinders chamber, and this piston connects a gear train, this gear train comprises a combined with transmission one driving link, and driving link is further combined with a driven member that can drive piston displacement; Wherein, this gearing and driven member are connected to digital output/input interface with circuit; And
One pipe-loop, its first, second cylinder chamber and chamber that connects air reservoir, pressure tuner respectively forms a loop, wherein be provided with one first solenoid valve between this air reservoir and pressure tuner, and be provided with one second solenoid valve between pressure tuner and pressure test station; Wherein, this first, second solenoid valve is controlled opening or locking of first, second solenoid valve respectively with the digital output/input interface of line connecting controller;
Start by driving mechanism, make driven member because of change in location, and make the piston in the barostat also produce change in location relatively, and cause volume change in the barostat, and then change to produce pressure, with control and accurate target atmospheric pressure value in the loop of this pressure detecting system is provided.
2. the pressure detecting system with fine setting voltage stabilizing function according to claim 1 is characterized in that wherein this controller is computing machine and display.
3. the pressure detecting system with fine setting voltage stabilizing function according to claim 1 is characterized in that, wherein the circuit of the digital output/input interface of this air reservoir and controller is provided with the vacuum pressure sensor of the atmospheric pressure value in this air reservoir of detection.
4. the pressure detecting system with fine setting voltage stabilizing function according to claim 1, it is characterized in that, but wherein be provided with a progressive number pressure valve between this first solenoid valve and pressure tuner, this pressure valve is with the digital output/input interface of line connecting controller.
5. the pressure detecting system with fine setting voltage stabilizing function according to claim 1 is characterized in that wherein this gearing is a servo motor, and driving link is a screw rod, and driven member is a slide block.
6. the pressure detecting system with fine setting voltage stabilizing function according to claim 1 is characterized in that wherein this master and slave moving part is respectively gear, tooth bar, lead screw, worm gear, eccentric wheel, support arm, or cam, connecting rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201360608U CN202033150U (en) | 2011-05-03 | 2011-05-03 | Pressure detection system with fine tuning and pressure stabilization functions |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201360608U CN202033150U (en) | 2011-05-03 | 2011-05-03 | Pressure detection system with fine tuning and pressure stabilization functions |
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| Publication Number | Publication Date |
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| CN202033150U true CN202033150U (en) | 2011-11-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011201360608U Expired - Fee Related CN202033150U (en) | 2011-05-03 | 2011-05-03 | Pressure detection system with fine tuning and pressure stabilization functions |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102636247A (en) * | 2012-03-28 | 2012-08-15 | 西北工业大学 | Experimental method of surge detecting device of gas compressor |
| CN106094805A (en) * | 2016-07-26 | 2016-11-09 | 上海航天设备制造总厂 | A kind of aerodynamic force servosystem power controls measure of merit platform and method |
| CN110425917A (en) * | 2019-07-22 | 2019-11-08 | 浙江嘉熙科技有限公司 | Pressure perceives micro actuator and pressure controlling method |
-
2011
- 2011-05-03 CN CN2011201360608U patent/CN202033150U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102636247A (en) * | 2012-03-28 | 2012-08-15 | 西北工业大学 | Experimental method of surge detecting device of gas compressor |
| CN106094805A (en) * | 2016-07-26 | 2016-11-09 | 上海航天设备制造总厂 | A kind of aerodynamic force servosystem power controls measure of merit platform and method |
| CN106094805B (en) * | 2016-07-26 | 2019-01-25 | 上海航天设备制造总厂 | A kind of pneumatic force servo system power control effect test platform and method |
| CN110425917A (en) * | 2019-07-22 | 2019-11-08 | 浙江嘉熙科技有限公司 | Pressure perceives micro actuator and pressure controlling method |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111109 Termination date: 20130503 |