CN103063349A - External electric magnetization small size vibration cylinder pressure transducer - Google Patents
External electric magnetization small size vibration cylinder pressure transducer Download PDFInfo
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- CN103063349A CN103063349A CN2012105781107A CN201210578110A CN103063349A CN 103063349 A CN103063349 A CN 103063349A CN 2012105781107 A CN2012105781107 A CN 2012105781107A CN 201210578110 A CN201210578110 A CN 201210578110A CN 103063349 A CN103063349 A CN 103063349A
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Abstract
The invention belongs to the technical field of an electric magnetization vibration cylinder pressure transducer, in particular to an external electric magnetization small size vibration cylinder pressure transducer. The external electric magnetization small size vibration cylinder pressure transducer solves the problems that the existing electric magnetization vibration cylinder pressure transducer cannot meet the miniaturization requirement. The external electric magnetization small size vibration cylinder pressure transducer comprises a vibration cylinder component and a circuit component. The vibration cylinder component comprises a protective cylinder, a vibration cylinder, an exciting coil, and a picking vibration coil. The exciting coil and the picking vibration coil are divided into two pairs and symmetrically fixed on the protective cylinder in a cross mode. The external electric magnetization small size vibration cylinder pressure transducer achieves the electromechanical conversion function of the miniaturization design of the vibration cylinder pressure transducer, the measurement accuracy is superior to 0.05 percent factor of safety (FS), the external electric magnetization small size vibration cylinder pressure transducer can be used in the fields of the pressure measurement of an airborne air data system, the ground meteorology and the pressure calibration measurement.
Description
Technical field
The invention belongs to the technical field of electric magnetization vibrating barrel sensor, be specifically related to a kind of external electromagnetic excitation small vibrating barrel pressure pickup.
Background technology
Existing electric magnetization vibration cylinder pressure transducer structure realizes sensor data-collection function for place one group of electric magnetization and Vibration pickup that is right-angled intersection in the responsive inner barrel of diameter 18mm.The electric magnetization principle is utilized the conversion of electricity---magnetic---power transfer principle practical function, built-in mode 18mm vibrating barrel structural principle, as shown in Figure 1, vibrating barrel is the thin wall metal cylinder of a direct feeling pressure, respectively there is an excitation to pass through support vertical placement separated by a distance with the pick-up coil in the cylinder, in single coil excitement frame center a magnetic conductive rod is housed, at the pick-up hub of a spool Permanentmagnet bar is arranged, coil the two poles of the earth and barrel keep certain interval.When plugged, electric current flows through drive coil, the electromagnetic force that produces makes barrel generation of vibration radial micro-displacement, the gap of barrel and pick-up coil changes simultaneously, produce induced potential at the pick-up coil, its change frequency equals the natural frequency of barrel vibration, amplifies to process through suitable signal to be connected to drive coil, forms the closed loop positive feedback.When different pressure p acted on the resonance barrel, the cylindrical shell resonance frequency changed, and by the variation of resonance frequency, and obtained tested force value.
This kind sensor physical dimension and resistance to shock can not satisfy the miniaturization demand that has airborne and measurement instrument now.By to the structure analysis of miniaturization product and the test analysis of same kind of products at abroad, but miniaturization structure Effective Raise sensor resistance to shock.At present along with domestic air data system by centralized towards miniaturization, distributed and embedded future development, must adopt the less pressure transducer of volume just can meet the demands.Miniaturization vibration cylinder pressure transducer and silicon resonance pressure sensor are to satisfy this requirement and feasible best sensor option at present.Domestic can be independently supporting sensor also only has vibration cylinder pressure transducer, but rest on for a long time 18mm vibration cylinder pressure transducer level, because relatively slow our the small-sized air data system that causes of domestic miniaturization vibration cylinder pressure transducer technical development tends to select external silicon resonant transducer when selecting sensor, even the also less relatively poor external silicon piezoresistive transducer of temperature stabilization performance of volume, sensor is as core product, face the restriction of external arm sale, we must turn to complete autonomous innovation from dependence on import the Generation of Airborne Technical Development Requirement.In addition, the vibrating barrel sensor of miniaturization also can be used for the multichannel pressure control of airborne engine, replaces original piezoresistive silicon sensor, has possessed precision height, stable performance, has been easy to digitized advantage.
Summary of the invention
The present invention can not satisfy the problem of miniaturization demand in order to solve existing electric magnetization vibrating barrel sensor, a kind of external electromagnetic excitation small vibrating barrel pressure pickup is provided.
The present invention adopts following technical scheme to realize:
A kind of external electromagnetic excitation small vibrating barrel pressure pickup; involving vibrations cartridge module and circuit unit; described vibrating barrel assembly comprises protection cylinder, vibrating barrel, drive coil and pick-up coil; described protection jacket casing is located at outside the vibrating barrel; cavity between vibrating barrel and the protection cylinder is vacuum; the upper end of vibrating barrel is airtight to be free end; the vibrating barrel lower end is fixedly connected with the protection cylinder; the vibrating barrel lower end connects gas source, it is characterized in that described drive coil and pick-up coil divide two pairs to be the space cross-shaped symmetrical and to be fixed on the protection cylinder.
The drive coil installation site is at 1/2nd places of vibrating barrel length dimension, and the axial spacing of pick-up coil installation site and drive coil installation site is 2mm, and the minimum spacing of drive coil and pick-up coil and vibrating barrel sensitive element is 0.1～0.2 mm.
The non-sensitive partial fixing in the lower end of described vibrating barrel is connecting on the collar; protection cylinder also be connected the collar and be fixedly connected with; connect collar bottom and connect spray nozzle of atmospheric pressure, spray nozzle of atmospheric pressure one end connects gas source, and the spray nozzle of atmospheric pressure other end is by connecting the collar and vibrating barrel internal communication.
Weld in the endoporus of the lower end of the described vibrating barrel non-sensitive part Snap joint collar.
Mounting temperature sensor in the described spray nozzle of atmospheric pressure.
Described single coil excitement and pick-up coil comprise enameled wire and skeleton, and enameled wire is around on the skeleton; A coil plug respectively is equipped with in frame center, and the coil plug is comprised of a magnetic core and a magnetic conductive rod.
Described vibrating barrel, protection cylinder and the connection collar are selected constant modulus alloy, and magnetic core is selected samarium-cobalt alloy, and magnetic conductive rod is selected magnetically soft alloy, and air pressure connects mouth and selects stainless steel.
Described vibrating barrel assembly two ends clamp by fixed support respectively, and vibrating barrel assembly stack shell bottom is placed circuit unit and is fixed in two fixed supports by trip bolt.
Described circuit unit comprises operational amplifier U1, operational amplifier U2, operational amplifier U3, operational amplifier U4, triode U5, triode U6, reaches the dividing potential drop branch road that is made of resistance R 16, resistance R 15 series connection, and dividing potential drop branch road two ends are parallel with the parallel branch of capacitor C 5, C6; The end of oppisite phase of operational amplifier U1 links to each other with pick-up signal input part 1 through resistance R 1, capacitor C 1, and resistance in series R3 between end of oppisite phase and the output terminal, pick-up signal input part 1 is through the parallel branch ground connection of resistance R 2 with capacitor C 2, the in-phase end of operational amplifier U1 is through capacitor C 3 ground connection, and the output terminal of operational amplifier U1 is connected with the end of oppisite phase of operational amplifier U2 through capacitor C 4, resistance R 4; The output terminal of operational amplifier U2 is connected with triode U6 base stage through resistance R 6, and be connected with pumping signal output terminal 4 through capacitor C 7, resistance R 8, and resistance in series R5 between end of oppisite phase and the output terminal, the collector of triode U6 links to each other grounded emitter with frequency output terminal 8; The output terminal of operational amplifier U3, be connected with the cathode power supply end of operational amplifier U1, and through resistance R 9, resistance R 7 ground connection, and the connected node between resistance R 9, the resistance R 7 connects respectively at the in-phase end of operational amplifier U1, U2, be in series with the parallel branch of resistance R 11, capacitor C 9 between the output terminal of operational amplifier U3 and the end of oppisite phase, the in-phase end of operational amplifier U3 links to each other with connected node between resistance R 16, the resistance R 15; The output terminal of operational amplifier U4 is connected with temperature and pressure output terminal 10, and be connected through the end of oppisite phase of resistance R 10 with operational amplifier U3, resistance in series R12 between the end of oppisite phase of operational amplifier U4 and the output terminal, the end of oppisite phase of operational amplifier U4 is through resistance R 18, resistance R 17 is connected with temperature signal input end 6, and through resistance R 13, the parallel branch ground connection of resistance R 14, wherein, resistance R 18, resistance R 17, resistance R 13, resistance R 14 consists of electric bridge, series capacitance C8 between the end of oppisite phase of operational amplifier U4 and the in-phase end, the in-phase end of operational amplifier U4 is connected with+5V power end 12; Triode U5 base earth, collector connect+5V power end 12, and emitter is connected with connected node between resistance R 18, the resistance R 17.
External electromagnetic of the present invention encourages the small vibrating barrel pressure pickup take Thin-Wall Cylindrical Shells as the resonance sensitive element, the equivalent stiffness of tested pressure change Thin-Wall Cylindrical Shells, thus change its natural frequency.Just can realize measurement to pressure by the natural frequency that detects Thin-Wall Cylindrical Shells.
The relative prior art of the present invention has following beneficial effect: realized that the responsive barrel designs diameter of the external excitation small vibrating of electromagnetism barrel pressure pickup is 9mm; excitation divides on the protection cylindrical shell that two groups of symmetries are positioned over responsive cylindrical shell outside with Vibration pickup, thereby realizes the data-collection function of the Miniaturization Design of vibration cylinder pressure transducer.Measuring accuracy of the present invention is better than 0.05%FS, gaging pressure 20 ~ 2620hPa, operating temperature range-55 ℃～80 ℃, physical dimension :≤47 * 37 * 29mm3 can be used for the pressure survey of airborne air data system and Ground Meteorological, pressure checking fields of measurement.
Small electrical pressure sensor of magnetic excitation vibrating cylinder of the present invention is because having digital output, long-time stability are good, low sluggish, good reproducibility and precision advantages of higher, characteristics with the residence people of residence army, can be used as the regeneration product of existing vibration cylinder pressure transducer, can be widely used in all kinds of novel airborne air data systems, military all kinds of strategy, tactical missile, unmanned spacecraft, the measurement of flying posture control of spacecraft etc., also can be used for exploitation, produce the portable pressure measuring instrument, surface air pressure checking equipment, all kinds of barometric surveying instruments etc., its product is such as civil aviaton, play a part very important in the high-precision pressure testing tools such as meteorological pressure test that the Headquarters of the General Staff system uses, aspect measurement accuracy and applicability, has the advantage that other pressure transducer can't replace fully.
Description of drawings
Fig. 1 is the structural representation of existing electric and magnetic oscillation barrel pressure pickup,
Fig. 2 is outside drawing of the present invention,
Fig. 3 is the vertical view of Fig. 2,
Fig. 4 is the structural representation of coil bar magnet,
Fig. 5 is the profile synoptic diagram of vibrating barrel assembly,
Fig. 6 is the inner structure synoptic diagram of vibrating barrel assembly,
Fig. 7 is the circuit theory diagrams of circuit unit,
Among the figure: 1-protects cylinder, 2-vibrating barrel, 3-drive coil, 4-pick-up coil, 5-support framework; the 6-pedestal, 7-temperature sensor, 8-fixed support, 9-vibrating barrel assembly, 10-magnetic core; the 11-magnetic conductive rod, the 12-vacuum chamber, 13-connects the collar, and 14-air pressure connects mouth, the 15-circuit unit.
Embodiment
By reference to the accompanying drawings the specific embodiment of the present invention is described further.
One-piece construction of the present invention such as Fig. 2, shown in Figure 3 mainly are comprised of vibrating barrel assembly and circuit unit two parts, and vibrating barrel assembly two ends clamp with two fixed supports, and the stack shell bottom is placed circuit unit and is fixed in two fixed supports by trip bolt.Fix by four jiaos of mounting screws of fixed support and auxiliary products, can solve cylindrical shell owing to the single-ended stack shell that fixedly causes swings the poor problem of the excessive vibration resistance of bringing, improve resistance to shock.The present invention can realize that sensor one-piece construction physical dimension is reduced into 47 * 37 * 29mm3 by original about 115 * 40 * 30mm3, and vibrating barrel assembly outer dia is reduced into 15mm by original about 24mm, and sensor weight is reduced to 65g by about 125g.At gaging pressure 20～2620hPa, in the working temperature-55 ℃～80 ℃ scope, measuring accuracy is better than 0.05%FS.The present invention adopts constant modulus alloy spinning drawing process to make the Thin-Wall Cylindrical Shells sensitive element, its frequency-temperature coefficient≤± 10 * 10-6/ ℃ (60 ℃～125 ℃), the excitation that outer symmetrical is placed and pick-up coil guarantee that the hoop wave number of sensor is 4, axial half wave number is 1 the work vibration shape, the excitation chain that matches with it makes sensor keep autovibration, the resonance frequency of sensor changes with pressure, thereby realizes pressure survey.
Embodiment: concrete structure is as follows.
1, vibrating barrel assembly, such as Fig. 5, shown in Figure 6, chief component is as follows.
1), vibrating barrel
Vibrating barrel wall thickness and length are different, and its tonometric scope is different, and pressure measurement sensitivity is also not identical, and output characteristics also there are differences, and this vibrating barrel output frequency is about 8kHz～12kHz.The upper end of vibrating barrel is airtight, is free end, and the lower end is fixed on and connects on the collar.Weld in the endoporus of the lower end of the vibrating barrel sensitive element non-sensitive part Snap joint collar, the diameter of base endoporus is 10～15mm, height: 4～6mm; The wall thickness of the responsive part of vibrating barrel sensitive element is that 0.04～0.06mm, diameter are that 9mm, height are 24～32mm.
2), protection cylinder
Cavity between vibrating barrel and the protection cylinder is evacuated, as the pressure normative reference.When being imported into the cavity of vibrating barrel inside by measuring pressure, vibrating barrel just can be experienced the size of absolute pressure.Protection cylinder outer dia is 15mm; height is 30～38mm; connect fixed combination together by the adapter sleeve boxing between protection cylinder and the vibrating barrel and guarantee airtight good; the protection cylinder is airtight good by being welded and fixed assurance with coil block, and the aperture of diameter 1.5mm is left as the sealing that vacuumizes in the top.
3), coil block
Coil block comprises drive coil, pick-up coil; excitation is positioned in the shell with the pick-up coil; minutes two pairs are the space cross-shaped symmetrical and are fixed on the protection cylindrical shell of responsive cylindrical shell outside by welding manner; to prevent or to reduce by two electromagnetic coupled effects between coil as far as possible; the drive coil position is at 1/2nd places of corresponding vibrating barrel length dimension, and pick-up coil position and drive coil position axis are to the about 2mm of location interval.Housing exterior diameter 8.5mm, high 6mm, bottom thickness be less than 0.25mm, and the minimum spacing that is installed on behind the protection cylinder barrel with the vibrating barrel sensitive element is 0.1～0.2 mm.Single coil excitement and pick-up coil groups become: enameled wire is around on the skeleton; A coil plug respectively is equipped with in frame center, and the coil plug is comprised of a magnetic core and a magnetic conductive rod.Magnetic core is comprised of permanent magnetic material, and bar magnet is comprised of soft magnetic material, can play the effect of assembling the magnetic line of force, sees Fig. 4.
4), air pressure connects mouth
Air pressure connects mouth and connects with vibrating barrel, protection cylinder by connecting the collar, and the inner temperature-sensitive diode of installing is as temperature sensor.
2, material is composed as follows:
1) vibrating barrel, protection cylinder, the connection collar
In order to reduce temperature error, the vibrating barrel material is selected frequency-temperature coefficient and the extremely low material of temperature coefficient of the elastic modulus.Because adopting electromagnetic exciting method, material must be magnetic, so still select constant modulus alloy, its alloy composition weight ratio is Cr:5.2～5.8%, Ni:43.0～44.0%, Ti:2.3～2.7%, Al:0.5～0.8% Fe: surplus, it has long-term magnetic stability.Consider the cylindrical shell boundary condition to the impact of sensor frequency stability, should have identical frequency-temperature coefficient and thermal expansivity with the joining connection collar of vibrating barrel and protection cylinder, the two selects identical constant modulus alloy material with vibrating barrel.
2) coil block
The coil block magnetic core is selected to have than high magnetic flux density, high-coercive force, and the temperature Curie point is high, the relative permeability that the samarium-cobalt alloy of the better characteristics of temperature stability, magnetic conductive rod are selected and the full all larger magnetically soft alloys of magnetic induction density that close.The internal electromagnetic coil is wound in polyamide skeleton by the copper enameled wire and makes.
3) air pressure connects mouth
Consider environmental resistance, select the common stainless steel material.
3, the electric circuit constitute is as follows:
The circuit chief component is amplifying circuit, shaping circuit and temperature-compensation circuit.
Amplifying circuit is the major part that closed loop realizes, it is a positive-feedback circuit that satisfies phase place and amplitude condition, at first input signal is carried out impedance transformation, then introduce the power supply DC component at the 1st grade of amplifier AC signal is carried out the one-level amplification, the 2nd grade of major control loop gain adjusted output amplitude, and output reaches capacity, and add adjustable link, play the effect of adjusting phase place and gain size.Shaping circuit is exported with Transistor-Transistor Logic level after adopting triode with the frequency signal shaping, temperature-compensation circuit adopts temp diode to realize the compensation of temperature, its output voltage by with input supply voltage after relatively amplifying for amplifier provides operating voltage, play simultaneously the temperature variant effect of blanketing frequency.
Concrete structure is as follows:
Circuit is comprised of level Four operational amplifier and comparer, and the input end 1 of operational amplifier U1 joins with the pick-up coil through capacitor C 1, resistance R 1, resistance R 2, capacitor C 2 rear termination pick-up signals in parallel, other end ground connection.Connecting resistance R3 between 2 pin of operational amplifier U1 and 1 pin.Another input end 2 of U1 directly is connected with the input end 5 of operational amplifier U2, ground connection after being connected in series with capacitor C 3 simultaneously.Output terminal 1 pin of operational amplifier U1 is connected with 6 pin of amplifier U2 afterwards with capacitor C 4 and resistance R 4 serial connections.Signal amplifies the 7 pin output by U2.Thereby this output signal forms closed loop self-excitation positive-feedback circuit with rear linking to each other with drive coil of C7, R8 serial connection, and this output signal is connected in series by the U6 shaping with R6 and exports with Transistor-Transistor Logic level simultaneously.The temp diode one end ground connection other end accesses by R13, R14, R17, and in the electric bridge that R18 forms, voltage stabilizing diode one end ground connection, one termination+5V power supply, output terminal is connected between R17 and the R18, one termination after C5, the C6 parallel connection+5V power supply, an end ground connection.+ 5V power supply is connected to 3 pin of U3 after the R16 dividing potential drop, simultaneously, and with ground connection behind the R15 series winding.5 pin of U4 are connected with+5V, and its 6 pin is connected with the electric bridge output terminal, and U4 output terminal 7 is connected with 2 pin of U3 after resistance R 10, and U3 exports to operational amplifier U1 power supply.Simultaneously with the rear ground connection of R9, R7 series winding.
Claims (9)
1. an external electromagnetic encourages the small vibrating barrel pressure pickup; involving vibrations cartridge module and circuit unit; described vibrating barrel assembly comprises protection cylinder (1); vibrating barrel (2); drive coil (3) and pick-up coil (4); described protection cylinder (1) is sheathed on outside the vibrating barrel (2); cavity between vibrating barrel (2) and the protection cylinder (1) is vacuum; the upper end of vibrating barrel (2) is airtight to be free end; vibrating barrel (2) lower end is fixedly connected with protection cylinder (1); vibrating barrel (2) lower end connects gas source, it is characterized in that described drive coil (3) and pick-up coil (4) minutes two pairs are the space cross-shaped symmetrical and are fixed in the protection tin (1).
2. external electromagnetic according to claim 1 encourages the small vibrating barrel pressure pickup, it is characterized in that drive coil (3) installation site is at 1/2nd places of corresponding vibrating barrel (2) length dimension, the axial spacing of pick-up coil (4) installation site and drive coil (3) installation site is 2mm, and drive coil (3) and pick-up coil (4) are 0.1～0.2 mm with the minimum spacing of vibrating barrel sensitive element.
3. external electromagnetic according to claim 1 and 2 encourages the small vibrating barrel pressure pickup; the non-sensitive partial fixing in lower end that it is characterized in that described vibrating barrel (2) is connecting on the collar (13); protection cylinder (1) also be connected the collar (13) and be fixedly connected with; connect the collar (13) bottom and connect spray nozzle of atmospheric pressure (14); spray nozzle of atmospheric pressure (14) one ends connect gas source, and spray nozzle of atmospheric pressure (14) other end is communicated with (2) section in the vibrating barrel by connecting the collar (13).
4. external electromagnetic according to claim 3 excitation small vibrating barrel pressure pickup is characterized in that welding in the endoporus of the lower end non-sensitive part Snap joint collar (13) of described vibrating barrel (2).
5. external electromagnetic excitation small vibrating barrel pressure pickup according to claim 4 is characterized in that the interior mounting temperature sensor of described spray nozzle of atmospheric pressure (14) (7).
6. external electromagnetic excitation small vibrating barrel pressure pickup according to claim 5 is characterized in that described single coil excitement (3) and pick-up coil (4) comprise enameled wire and skeleton, and enameled wire is around on the skeleton; A coil plug respectively is equipped with in frame center, and the coil plug is comprised of a magnetic core (10) and a magnetic conductive rod (11).
7. external electromagnetic according to claim 6 encourages the small vibrating barrel pressure pickup; it is characterized in that described vibrating barrel (2), protection cylinder (1) and connect the collar (13) selecting constant modulus alloy; magnetic core (10) is selected samarium-cobalt alloy; magnetic conductive rod (11) is selected magnetically soft alloy, air pressure to connect mouth (14) and is selected stainless steel.
8. external electromagnetic according to claim 7 encourages the small vibrating barrel pressure pickup, it is characterized in that described vibrating barrel assembly (9) two ends clamp by fixed support (8) respectively, vibrating barrel assembly (9) stack shell bottom is placed circuit unit and is fixed in two fixed supports by trip bolt.
9. external electromagnetic according to claim 8 encourages the small vibrating barrel pressure pickup, it is characterized in that circuit unit comprises operational amplifier U1, operational amplifier U2, operational amplifier U3, operational amplifier U4, triode U5, triode U6, reaches the dividing potential drop branch road that is made of resistance R 16, resistance R 15 series connection, dividing potential drop branch road two ends are parallel with the parallel branch of capacitor C 5, C6; The end of oppisite phase of operational amplifier U1 links to each other with pick-up signal input part 1 through resistance R 1, capacitor C 1, and resistance in series R3 between end of oppisite phase and the output terminal, pick-up signal input part 1 is through the parallel branch ground connection of resistance R 2 with capacitor C 2, the in-phase end of operational amplifier U1 is through capacitor C 3 ground connection, and the output terminal of operational amplifier U1 is connected with the end of oppisite phase of operational amplifier U2 through capacitor C 4, resistance R 4; The output terminal of operational amplifier U2 is connected with triode U6 base stage through resistance R 6, and be connected with pumping signal output terminal 4 through capacitor C 7, resistance R 8, and resistance in series R5 between end of oppisite phase and the output terminal, the collector of triode U6 links to each other grounded emitter with frequency output terminal 8; The output terminal of operational amplifier U3, be connected with the cathode power supply end of operational amplifier U1, and through resistance R 9, resistance R 7 ground connection, and the connected node between resistance R 9, the resistance R 7 connects respectively at the in-phase end of operational amplifier U1, U2, be in series with the parallel branch of resistance R 11, capacitor C 9 between the output terminal of operational amplifier U3 and the end of oppisite phase, the in-phase end of operational amplifier U3 links to each other with connected node between resistance R 16, the resistance R 15; The output terminal of operational amplifier U4 is connected with temperature and pressure output terminal 10, and be connected through the end of oppisite phase of resistance R 10 with operational amplifier U3, resistance in series R12 between the end of oppisite phase of operational amplifier U4 and the output terminal, the end of oppisite phase of operational amplifier U4 is through resistance R 18, resistance R 17 is connected with temperature signal input end 6, and through resistance R 13, the parallel branch ground connection of resistance R 14, wherein, resistance R 18, resistance R 17, resistance R 13, resistance R 14 consists of electric bridge, series capacitance C8 between the end of oppisite phase of operational amplifier U4 and the in-phase end, the in-phase end of operational amplifier U4 is connected with+5V power end 12; Triode U5 base earth, collector connect+5V power end 12, and emitter is connected with connected node between resistance R 18, the resistance R 17.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210578110.7A CN103063349B (en) | 2012-12-27 | 2012-12-27 | External electromagnetic excitation small vibrating barrel pressure pickup |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210578110.7A CN103063349B (en) | 2012-12-27 | 2012-12-27 | External electromagnetic excitation small vibrating barrel pressure pickup |
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| CN103063349A true CN103063349A (en) | 2013-04-24 |
| CN103063349B CN103063349B (en) | 2015-10-28 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108759918A (en) * | 2018-05-30 | 2018-11-06 | 中国人民解放军国防科技大学 | Vibration-stress composite sensor for monitoring flange bolt of wind power tower |
| CN110411630A (en) * | 2019-08-02 | 2019-11-05 | 西安微电子技术研究所 | A kind of vibration cylinder pressure transducer and its characteristic compensation method |
| CN114563123A (en) * | 2022-04-28 | 2022-05-31 | 成都凯天电子股份有限公司 | External excitation type vibration cylinder pressure sensor and pressure calculation method thereof |
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| US4102209A (en) * | 1977-06-17 | 1978-07-25 | United Technologies Corporation | Temperature compensated vibrating cylinder pressure transducer |
| GB2002519A (en) * | 1977-08-12 | 1979-02-21 | Solartron Electronic Group | Pressure transducers |
| US4178804A (en) * | 1977-08-12 | 1979-12-18 | The Solartron Electronic Group Limited | Pressure transducers |
| JPS61233337A (en) * | 1985-04-09 | 1986-10-17 | Mitsubishi Electric Corp | Pressure detector |
| US20050268721A1 (en) * | 2004-04-23 | 2005-12-08 | Weston Aerospace Limited | Device for measuring pressure |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4102209A (en) * | 1977-06-17 | 1978-07-25 | United Technologies Corporation | Temperature compensated vibrating cylinder pressure transducer |
| GB2002519A (en) * | 1977-08-12 | 1979-02-21 | Solartron Electronic Group | Pressure transducers |
| US4178804A (en) * | 1977-08-12 | 1979-12-18 | The Solartron Electronic Group Limited | Pressure transducers |
| JPS61233337A (en) * | 1985-04-09 | 1986-10-17 | Mitsubishi Electric Corp | Pressure detector |
| US20050268721A1 (en) * | 2004-04-23 | 2005-12-08 | Weston Aerospace Limited | Device for measuring pressure |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108759918A (en) * | 2018-05-30 | 2018-11-06 | 中国人民解放军国防科技大学 | Vibration-stress composite sensor for monitoring flange bolt of wind power tower |
| CN108759918B (en) * | 2018-05-30 | 2020-10-23 | 中国人民解放军国防科技大学 | Vibration-stress composite sensor for monitoring flange bolt of wind power tower |
| CN110411630A (en) * | 2019-08-02 | 2019-11-05 | 西安微电子技术研究所 | A kind of vibration cylinder pressure transducer and its characteristic compensation method |
| CN114563123A (en) * | 2022-04-28 | 2022-05-31 | 成都凯天电子股份有限公司 | External excitation type vibration cylinder pressure sensor and pressure calculation method thereof |
| CN114563123B (en) * | 2022-04-28 | 2022-09-09 | 成都凯天电子股份有限公司 | External excitation type vibration cylinder pressure sensor and pressure calculation method thereof |
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| CN103063349B (en) | 2015-10-28 |
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