CN108151959A - Sinusoidal force on-line calibration device based on PZT (piezoelectric transducer) - Google Patents
Sinusoidal force on-line calibration device based on PZT (piezoelectric transducer) Download PDFInfo
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- CN108151959A CN108151959A CN201810026192.1A CN201810026192A CN108151959A CN 108151959 A CN108151959 A CN 108151959A CN 201810026192 A CN201810026192 A CN 201810026192A CN 108151959 A CN108151959 A CN 108151959A
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- pzt
- component
- force
- piezoelectric transducer
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L25/00—Testing or calibrating of apparatus for measuring force, torque, work, mechanical power, or mechanical efficiency
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
The invention discloses the sinusoidal force on-line calibration devices based on PZT (piezoelectric transducer), calibrating installation is integrated in together with sensor between the first component and second component with being calibrated, calibrating installation includes force-transmitting block, piezoelectric stack and retaining mechanism, force-transmitting block, piezoelectric stack stack fixation successively, force-transmitting block, which is located at, to be calibrated between sensor and piezoelectric stack, the retaining mechanism locking first component and second component.Calibrating installation is calibrated with being calibrated to be integrated in together with sensor in equipment by the present invention, during calibration sensor is calibrated without dismounting, it can implement on-line calibration in situ to being calibrated sensor, improve the calibration efficiency of sensor, also working environment has been merged in calibration to being calibrated the influence of sensor performance, has improved the accuracy rate of calibration.
Description
Technical field
The present invention relates to on-line calibration sensor field, particularly it is a kind of can be integrated in be calibrated in equipment based on pressure
The sinusoidal force on-line calibration device of electric transducer.
Background technology
Sinusoidal pressure signal is most common periodic group signal in Dynamic pressure calibration, can extremely accurate be obtained by it
To the amplitude-frequency characteristic and phase-frequency characteristic of pressure sensor.
CN200810240985.X discloses a kind of dynamic pressure regulator based on piezoelectric ceramic technology, including resonatron
Road, piezoelectric stack and tension excitation circuitry, it is humorous that tension excitation circuitry includes sine voltage signal generator, power amplifier and LC
Shake circuit, and the output terminal of LC resonance circuit connects with piezoelectric stack, and piezoelectric stack is placed in the bottom of resonance pipeline, in resonance pipeline
The hydraulically full medium in portion, the pumping signal that LC resonance circuit generates are acted on piezoelectric stack, pass through Regulate signal generator
Frequency changes the frequency of oscillation of piezoelectric stack, makes the frequency of oscillation of piezoelectric stack and the intrinsic frequency of liquid medium in resonance pipeline
Rate is equal, and liquid medium generates resonance, the interior generation sine pressure wave at the top of resonance pipeline, and resonance pipeline top is provided with installation and treats
The mounting hole of calibrating pressure sensor.This pressure regulator occurs resonance using liquid medium and improves Sine Pressure Generator
Working frequency and pressure magnitude.Its shortcoming is：It needs to be calibrated in sensor slave device and remove, then mounted on pressure calibration
It is calibrated on device, can not realize not dismantling and be calibrated sensor and carry out on-line calibration.This is collection for being calibrated sensor
Into the situation as connector between two components for being calibrated equipment（Such as measure power of the machinery on hand between adjacent mechanism
Sensor）, to dismount that be calibrated sensor extremely difficult.
Invention content
It can together be integrated in being calibrated sensor and be calibrated in equipment the purpose of the present invention is to provide one kind, be needed
Can carry out in situ, on-line calibration to being calibrated sensor during calibration, when non-calibrated without from be calibrated dismantled in equipment based on
The sinusoidal force on-line calibration device of PZT (piezoelectric transducer).
Sinusoidal force on-line calibration device based on PZT (piezoelectric transducer), calibrating installation are integrated in being calibrated together with sensor
Between one component and second component, calibrating installation include force-transmitting block, piezoelectric stack and retaining mechanism, force-transmitting block, piezoelectric stack according to
Secondary to stack fixation, force-transmitting block, which is located at, to be calibrated between sensor and piezoelectric stack, and retaining mechanism locks the first component and second
Part.Force-transmitting block is connecting corrected sensor and piezoelectric stack, and Transfer Standards sinusoidal force.
The first component refers to two connected components connected by being calibrated sensor with second component.
Further, retaining mechanism is located at the first component by first flange, second flange and bolt and nut composition, first flange
On, second flange is located on second component.Flange can be independently of the independent part of component, and correspondence is fixed on by fastener
Component on or flange and component be integrally formed.
During calibration, together with bolt and nut pre-tightens the first component and second component, by piezoelectric stack outputting standard sine
Power, the value of standard sine power is calculated by the voltage of input PZT (piezoelectric transducer) to be obtained.Standard sine power is transmitted to through force-transmitting block by school
Quasi- sensor completes the calibration to being calibrated sensor.After the completion of calibration, the bolt and nut of locking device is unclamped, makes first
The space that part and second component acquisition mutually move, the first component and second component can work normally, and corrected sensor also may be used
Normally the force value between two components of connection measures.
Further, piezoelectric stack is made of the first preload block, the second preload block, PZT (piezoelectric transducer) and clamping screw, piezoelectricity
Energy converter have it is multiple, multiple PZT (piezoelectric transducer)s stack is set to the first preload block and second pre-tighten block between, first pre-tighten block and
Setting allows the through-hole that clamping screw passes through respectively on PZT (piezoelectric transducer), and the spiral shell engaged with clamping screw is set on the second preload block
Hole, all through-holes and screw hole alignment；There are vibration isolation fluid sealant, first PZT (piezoelectric transducer) and first between adjacent PZT (piezoelectric transducer)
There is vibration isolation fluid sealant between preload block, have vibration isolation fluid sealant between the last one PZT (piezoelectric transducer) and the second preload block.
It is an advantage of the invention that：
1st, calibrating installation is calibrated with being calibrated to be integrated in together with sensor in equipment, is calibrated sensing without dismounting during calibration
Device can implement on-line calibration in situ to being calibrated sensor, improve the calibration efficiency of sensor, also merge work in calibration
Make environment to being calibrated the influence of sensor performance, improve the accuracy rate of calibration.
2nd, the sinusoidal force source of calibrating installation is stacked by PZT (piezoelectric transducer), and PZT (piezoelectric transducer) is in the work of sinusoidal excitation voltage
Sinusoidal force can be exported under, and force value size is directly proportional to voltage swing, therefore can be asked by the voltage swing of application
The force value size that must apply.Larger force value output can be obtained by stacking multi-disc PZT (piezoelectric transducer).
3rd, PZT (piezoelectric transducer) has higher intrinsic frequency in itself, and the intrinsic frequency in the sinusoidal force source being made from it is high, because
The adjustable upper frequency limit of calibration system described in this this patent is high.
Description of the drawings
Fig. 1 is the schematic diagram of the present invention.
Fig. 2 is the structure diagram of piezoelectric stack.
Specific embodiment
As shown in Figure 1, the sinusoidal force on-line calibration device based on piezoelectric stack, calibrating installation is with being calibrated sensor 1 one
It rising and is integrated between the first component 51 and second component 52, calibrating installation includes force-transmitting block 2, piezoelectric stack 3 and retaining mechanism 4,
Force-transmitting block 2 and piezoelectric stack 3 stack fixation successively, and force-transmitting block 2, which is located at, to be calibrated between sensor 1 and piezoelectric stack 3, locks machine
Structure 4 locks the first component 51 and second component 52.
The first component 51 and second component 52 refer to two connected components connected by being calibrated sensor 1.The first component 51
Between second component 52 for accommodate the present invention space can be calibrated equipment design at the beginning of reserve or
Postmenstruation is transformed to be formed.
Need the sensor for carrying out on-line calibration in situ often not easy to assemble, and its location is difficult to directly apply
External force.Therefore, the present invention integrates force-transmitting block 2 and piezoelectric stack 3 with being calibrated sensor 1.It is applied to by measuring
The voltage at piezo-electric stack both ends acquires the force value size of application.
Force-transmitting block 2 is used for connecting corrected sensor and piezoelectric stack and Transfer Standards sinusoidal force, is passed to improve force value
The precision passed, force-transmitting block 2 will have larger rigidity, and it is firm to improve whole structure for the material that rigidity can be selected larger thus
Degree.Using the force value transmission characteristic in Elasticity and theoretical analysis of finite element force-transmitting block 2, result is transmitted to force value and is mended
It repays, can further promote calibration accuracy.
In addition, smooth transmit in order to ensure force value is needed to being limited by the relative motion at school mechanism both ends, thus
Devise retaining mechanism.Retaining mechanism applies pretightning force to both ends using screw rod and locks.When calibration is performed, retaining mechanism
Certain pretightning force can be applied to mechanism.During without calibration, retaining mechanism is unclamped.
Retaining mechanism 4 is located at first by first flange 41, second flange 42 and screw rod 43, nut composition, first flange 41
On component 51, second flange 42 is located on second component 52.Flange 41,42 can be independently of the independent part of component, flange
It is fixed on corresponding component by fastener.Can also be that flange and component are integrally formed.
During calibration, together with 43 nut of screw rod pre-tightens the first component 51 with second component 52, to limit the first component 51
With 52 relative motion of second component, it is ensured that the smooth transmission of power.By 3 outputting standard sinusoidal force of piezoelectric stack, standard sine power warp
Force-transmitting block 2, which is transmitted to, is calibrated sensor 1, completes the calibration to being calibrated sensor 1.After the completion of calibration, locking device is unclamped
Screw rod 43 and nut, make the first component 51 and second component 52 obtain the space mutually moved, the first component 51 and second
Part 52 can work normally, and corrected sensor 1 also can normally measure the interaction between the first component 51 and second component 52
Power.
As shown in Fig. 2, piezoelectric stack 3 pre-tightens block 33, second by first pre-tightens block 34, PZT (piezoelectric transducer) 32 and clamping screw
31 compositions, PZT (piezoelectric transducer) 32 have multiple, and multiple PZT (piezoelectric transducer)s 32, which stack, to be set to the first preload block 33 and second and pre-tighten block
Between 34, setting allows the through-hole that clamping screw 31 passes through respectively on the first preload block 33 and PZT (piezoelectric transducer) 32, and second pre-tightens
The screw hole engaged with clamping screw 31, all through-holes and screw hole alignment are set on block 34；Have between adjacent PZT (piezoelectric transducer) 32
Vibration isolation fluid sealant, first PZT (piezoelectric transducer) 32 and first have vibration isolation fluid sealant between pre-tightening block 33, the last one piezoelectric energy-conversion
Device 32 and second has vibration isolation fluid sealant between pre-tightening block 34.The countersunk head that setting coordinates with clamping screw 31 on first compact heap 33
Hole.
Piezoelectric stack is small, is calibrated in equipment convenient for being integrated into.
Content described in this specification embodiment is only enumerating to the way of realization of inventive concept, protection of the invention
Range is not construed as being only limitted to the concrete form that embodiment is stated, protection scope of the present invention is also and in art technology
Personnel according to present inventive concept it is conceivable that equivalent technologies mean.
Claims (3)
1. the sinusoidal force on-line calibration device based on PZT (piezoelectric transducer), it is characterised in that：Calibrating installation is with being calibrated sensor one
Rise be integrated between the first component and second component, calibrating installation include force-transmitting block, piezoelectric stack and retaining mechanism, force-transmitting block,
Piezoelectric stack stacks fixation successively, and force-transmitting block, which is located at, to be calibrated between sensor and piezoelectric stack, and retaining mechanism locks first
Part and second component.
2. the sinusoidal force on-line calibration device based on PZT (piezoelectric transducer) according to claims 1, it is characterised in that：Locking
Mechanism is located at by first flange, second flange and bolt and nut composition, first flange on the first component, and second flange is located at second
On component.
3. the sinusoidal force on-line calibration device based on PZT (piezoelectric transducer) according to claims 2, it is characterised in that：Piezoelectricity
It stacks and is made of the first preload block, the second preload block, PZT (piezoelectric transducer) and clamping screw, PZT (piezoelectric transducer) has multiple, multiple pressures
Electric transducer, which stacks, to be set between the first preload block and the second preload block, is set respectively on the first preload block and PZT (piezoelectric transducer)
The through-hole that clamping screw is allowed to pass through, second pre-tightens the screw hole for setting on block and being engaged with clamping screw, all through-holes and screw hole pair
Together；There is vibration isolation fluid sealant between adjacent PZT (piezoelectric transducer), have the vibration isolation close between first PZT (piezoelectric transducer) and the first preload block
Sealing has vibration isolation fluid sealant between the last one PZT (piezoelectric transducer) and the second preload block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810026192.1A CN108151959A (en) | 2018-01-11 | 2018-01-11 | Sinusoidal force on-line calibration device based on PZT (piezoelectric transducer) |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810026192.1A CN108151959A (en) | 2018-01-11 | 2018-01-11 | Sinusoidal force on-line calibration device based on PZT (piezoelectric transducer) |
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| Publication Number | Publication Date |
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| CN108151959A true CN108151959A (en) | 2018-06-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810026192.1A Pending CN108151959A (en) | 2018-01-11 | 2018-01-11 | Sinusoidal force on-line calibration device based on PZT (piezoelectric transducer) |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108982008A (en) * | 2018-09-10 | 2018-12-11 | 中国航空工业集团公司北京长城计量测试技术研究所 | Double base combined type high frequency sinusoidal pressure generator and pressure method for generation |
| CN110849539A (en) * | 2019-11-27 | 2020-02-28 | 中国航空工业集团公司北京长城计量测试技术研究所 | Calibration device for pressure measurement system with tube cavity |
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| CN101587047A (en) * | 2009-07-20 | 2009-11-25 | 中国航空工业第一集团公司北京长城计量测试技术研究所 | High-precision force value loading adjusting device for hardness meter |
| CN101769814A (en) * | 2008-12-26 | 2010-07-07 | 中国航空工业第一集团公司北京长城计量测试技术研究所 | Dynamic pressure calibrator based on piezoelectric ceramic technology |
| CN102401707A (en) * | 2011-08-30 | 2012-04-04 | 湖南大学 | Dynamic concrete stress sensor and calibrating method based on piezoelectric ceramics |
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| CN203758687U (en) * | 2014-04-14 | 2014-08-06 | 晋江市英威特生物技术有限公司 | Sine force standardizing device |
| CN104535258A (en) * | 2015-01-05 | 2015-04-22 | 广州赛宝计量检测中心服务有限公司 | Automatic calibration device for dynamic force sensor |
| CN204514533U (en) * | 2015-01-09 | 2015-07-29 | 中信戴卡股份有限公司 | A kind of force value calibrating device for sensors |
| CN105593658A (en) * | 2013-10-07 | 2016-05-18 | Mts***公司 | Precision force applicator for force transducer calibration |
| CN207751636U (en) * | 2018-01-11 | 2018-08-21 | 浙江大学 | Sinusoidal force on-line calibration device based on PZT (piezoelectric transducer) |
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Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101769814A (en) * | 2008-12-26 | 2010-07-07 | 中国航空工业第一集团公司北京长城计量测试技术研究所 | Dynamic pressure calibrator based on piezoelectric ceramic technology |
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| CN102401707A (en) * | 2011-08-30 | 2012-04-04 | 湖南大学 | Dynamic concrete stress sensor and calibrating method based on piezoelectric ceramics |
| CN202350981U (en) * | 2011-11-28 | 2012-07-25 | 周长明 | Force standard machine based on microcomputer control and piezoelectric precision tracking fine tuning technology |
| CN105593658A (en) * | 2013-10-07 | 2016-05-18 | Mts***公司 | Precision force applicator for force transducer calibration |
| CN203758687U (en) * | 2014-04-14 | 2014-08-06 | 晋江市英威特生物技术有限公司 | Sine force standardizing device |
| CN104535258A (en) * | 2015-01-05 | 2015-04-22 | 广州赛宝计量检测中心服务有限公司 | Automatic calibration device for dynamic force sensor |
| CN204514533U (en) * | 2015-01-09 | 2015-07-29 | 中信戴卡股份有限公司 | A kind of force value calibrating device for sensors |
| CN207751636U (en) * | 2018-01-11 | 2018-08-21 | 浙江大学 | Sinusoidal force on-line calibration device based on PZT (piezoelectric transducer) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108982008A (en) * | 2018-09-10 | 2018-12-11 | 中国航空工业集团公司北京长城计量测试技术研究所 | Double base combined type high frequency sinusoidal pressure generator and pressure method for generation |
| CN110849539A (en) * | 2019-11-27 | 2020-02-28 | 中国航空工业集团公司北京长城计量测试技术研究所 | Calibration device for pressure measurement system with tube cavity |
| CN110849539B (en) * | 2019-11-27 | 2021-04-06 | 中国航空工业集团公司北京长城计量测试技术研究所 | Calibration device for pressure measurement system with tube cavity |
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