CN105606200A - Three-axial vibration sensor structure - Google Patents
Three-axial vibration sensor structure Download PDFInfo
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- CN105606200A CN105606200A CN201410594846.2A CN201410594846A CN105606200A CN 105606200 A CN105606200 A CN 105606200A CN 201410594846 A CN201410594846 A CN 201410594846A CN 105606200 A CN105606200 A CN 105606200A
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Abstract
The invention relates to the technical field of vibration sensors, specifically relates to a three-axial vibration sensor structure, and aims to solve the problem that the existing three-axial vibration sensor produces high-frequency resonance easily, is vulnerable to electromagnetic interference and is large. The three-axial vibration sensor structure is characterized in that the structure comprises a fixing device, a signal transmission device and a measuring device; the measuring device is fixedly connected inside the fixing device; the signal transmission device penetrates into the fixing device from outside the fixing device, and is connected with the fixing device; the signal transmission device is further connected with the measuring device; the measuring device is used for measuring the acceleration of an object to be tested; the fixing device is used for supporting and protecting the measuring device and the signal transmission device; and the signal transmission device is used for transmitting an acceleration signal measured by the measuring device to signal acquisition equipment. Through integrated design of four rigid printed circuit boards and three flexible boards, reliable interface connection is realized, the internal space of the sensor is saved, the frequency response is improved obviously, and the signal nose is decreases obviously.
Description
Technical field
The present invention relates to vibrating sensor technical field, be specifically related to a kind of three-axial vibration sensor construction.
Background technology
Three-axial vibration sensor can be measured measuring point mutually orthogonal X, Y, tri-directions of Z simultaneouslyVibration signal, has broad application prospects at aerospace field.
Frequency Response is one of most important index of weighing vibrating sensor performance quality, traditional three-axis piezoresistanceThough formula vibrating sensor has good direct current effect, its temperature effect is serious, and dynamic range is limited, frequentlyRing characteristic and only can reach 1KHz left and right. Three axle condenser type vibrating sensors have high sensitivity, low temperature effects,The advantages such as low-power consumption, but due to the high impedance of sensor output, it is subject to electromagnetic interference influence, is not suitable forUnder adverse circumstances, work. And its frequency range is limited, be up to 3KHz left and right. Three axle piezoelectric type vibrating sensingsDevice wide frequency range, the linearity are good, but due to charge leakage, electric charge blocking effect easily occur, and three-dimensional is pressedElectricity formula vibrating sensor generally adopts the structural design of sensor and converter split, is difficult for realizing integrated.
Above-mentioned vibrating sensor all comes with some shortcomings, and this has seriously limited the range of application of sensor.
Summary of the invention
The object of the invention is to solve existing three-axial vibration sensor easily produces high-frequency resonant, is subject to electromagnetismDisturb and the larger problem of volume, provide that a kind of Frequency Response is high, antijamming capability is strong, connection reliabilityThe three-axial vibration sensor construction of height and volume compact.
The present invention is achieved in that
A kind of three-axial vibration sensor construction, comprises fixture, signal transmitting apparatus and measurement mechanism;Measurement mechanism is fixedly connected on fixture inside; Signal transmitting apparatus penetrates into fixing from fixture outsideDevice is inner, is fixedly connected with fixture; Signal transmitting apparatus is also connected with measurement mechanism; Measurement mechanismFor measuring the acceleration of object under test; Fixture is for providing measurement mechanism and signal transmitting apparatusSupport and protection; Signal transmitting apparatus is transferred to signals collecting for the acceleration signal that measurement mechanism is recorded and establishesStandby.
Fixture as above comprises housing, bunch pipe, bunch screw, nut, packing ring and top cover;Housing entirety is the cuboid of the hollow of upper end open; On two relative angles of housing cuboid along shellHeight direction has two fixed vias; On housing cuboid rear end face, have through hole; Top cover entiretyTabular for square, cover on the upper surface of housing; Top cover and housing fixed via correspondence position have twoIndividual through hole, two through holes match with the fixed via of housing respectively, for vibrating sensor structure is fixedOn object under test; Bunch pipe entirety is "T"-shaped, is made up of upper end circle the cylinder of upper and lower two hollowsThe external diameter of cylinder is greater than the cylindrical external diameter in lower end, and the cylindrical internal diameter in upper end is greater than the cylindrical internal diameter in lower end,The cylindrical external diameter in upper end is greater than the diameter of through hole on housing cuboid rear end face, the cylindrical external diameter in lower endBe less than or equal to the diameter of through hole on housing cuboid rear end face; In upper end, cylindrical front end has through hole,This through-hole inner surface has internal thread; The cylindrical outer surface in lower end has external screw thread; Upper end cylinder is positioned at housingInside, cylinder through hole from housing cuboid rear end face in lower end passes; Nut and bunch pipe lower end cylinderBody is threaded; Nut is for being fixed on housing by bunch pipe; Packing ring entirety is annular, on annulus, opensJagged, annulus external diameter is less than or equal to the cylindrical internal diameter in bunch pipe upper end; Packing ring is arranged on bunch pipe upper endCylindrical inside, the through hole of packing ring annulus breach and bunch pipe upper end cylinder front end staggers; Bunch screwFor upper surface has the M3 type screw of gap along diametric(al); Before bunch screw and bunch pipe upper end are cylindricalThe through hole whorl that end has connects, and the tip of bunch screw contacts with the outer surface of packing ring.
Housing as above, bunch pipe, bunch screw, nut and top cover all adopt aluminum alloy materials to make;Packing ring adopts soft aluminum to make; The thickness of housing is 1.5mm; The overall size of housing and top cover is27×27×21mm。
Signal transmitting apparatus as above comprises wire, cable and electric connector; One end of wire and measurementDevice connects, and the other end is connected with one end of cable; The other end of cable is connected with one end of electric connector;The other end of electric connector is connected with signal collecting device; Wire passes from the inside of the bunch pipe of fixture,Pass the inside of packing ring simultaneously.
Measurement mechanism as above comprises rigid-flexible combined circuit plate and sensitive core body; Rigid-flexible combined circuit plate bagDrawing together the first rigid plate, the second rigid plate, the 3rd rigid plate, the 4th rigid plate, the first flex plate, second scratchesProperty plate and the 3rd flex plate; The first rigid plate is connected by the second flex plate with the 3rd rigid plate; The second rigidityPlate is connected by the first flex plate with the 3rd rigid plate; The 3rd rigid plate and the 4th rigid plate are flexible by the 3rdPlate connects; The first rigid plate, the second rigid plate, the 3rd rigid plate and the 4th rigid plate all adopt four laminate knotsStructure, is followed successively by one deck signals layer, two-layer internal signal layer and bottom from top to bottom; Signals layer is used for welding unitDevice, internal signal layer is for wiring, and bottom is for being connected with the housing of fixture and the isolation of insulating; TheOne flex plate, the second flex plate and the 3rd flex plate all adopt double panel structure, between two-ply, connect up; QuickSense core body has three, is welded on respectively the signals layer of the first rigid plate, the second rigid plate and the 3rd rigid plateOn; The power end of sensitive core body is connected with the voltage adjuster in rigid plate, and the output of sensitive core body is with justProperty plate up conversion circuit front end connect; The first rigid plate is fixed on the right side inwall of housing, the second rigidityPlate is fixed on the front side inwall of housing, and the 4th rigid plate is fixed in the inner left wall of housing, the 3rd rigidityPlate is fixed on the downside inwall of housing; The wire of signal transmitting apparatus respectively with the first rigid plate, second firmProperty plate, the 3rd rigid plate and the 4th rigid plate signals layer welding.
The first rigid plate as above, the second rigid plate, the 3rd rigid plate and the 4th rigid plate all adopt ringOxygen glass cloth pressing plate is made; The first flex plate, the second flex plate and the 3rd flex plate all adopt polyimides materialMaterial is made.
The circuit connecting relation of rigid-flexible combined circuit plate as above is determined according to GJB362B-2009, sensitivityCore body adopts 1221 core bodies that SDI company produces to realize.
The invention has the beneficial effects as follows:
The present invention includes fixture, signal transmitting apparatus and measurement mechanism. Print by adopting four rigidityThe integrated design of plate and three flex plates, realized interface reliability connect, saved sensor inPortion space, obviously reduces the signal noise in signals transmission. Application the present invention has produced 5 samplesMachine, and in Vibrating Sensor Calibration system, carried out the checking of performance indications, in band, unevenness is less than 1dBCondition under, the Frequency Response of sensor all can reach 5KHz. After integrated design, the filter of five model machinesWave energy and voltage-regulating circuit function are all working properly, in the sensitivity and final output signal of three directionsThe dry value of noise all meet the requirement of test.
Brief description of the drawings
Fig. 1 is that the master of a kind of three-axial vibration sensor construction of the present invention looks cutaway view;
Fig. 2 is that the A-A of a kind of three-axial vibration sensor construction of the present invention is to cutaway view;
Fig. 3 is that the master of bunch pipe in a kind of three-axial vibration sensor construction of the present invention looks cutaway view;
Fig. 4 is that the A-A of bunch pipe in a kind of three-axial vibration sensor construction of the present invention is to cutaway view;
Fig. 5 is the front view of a kind of three-axial vibration sensor construction middle washer of the present invention;
Fig. 6 is the top view of a kind of three-axial vibration sensor construction middle washer of the present invention;
Fig. 7 is the structural representation of rigid-flexible combined circuit plate in a kind of three-axial vibration sensor construction of the present inventionFigure.
Wherein: 1. housing, 2. rigid-flexible combined circuit plate, 3. wire, 4. sensitive core body, 5. bunch pipe, 6. bunchScrew, 7. nut, 8. cable, 9. electric connector, 10. packing ring, 11. top covers, 12. rigid plate, 12-1. firstRigid plate, 12-2. the second rigid plate, 12-3. the 3rd rigid plate, 12-4. the 4th rigid plate, 13. flex plates, 13-1.The first flex plate, 13-2. the second flex plate, 13-3. the 3rd flex plate.
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention is described further.
A kind of three-axial vibration sensor construction, comprises fixture, signal transmitting apparatus and measurement mechanism.Measurement mechanism is fixedly connected on fixture inside. Signal transmitting apparatus penetrates into fixing from fixture outsideDevice is inner, is fixedly connected with fixture. Signal transmitting apparatus is also connected with measurement mechanism. Measurement mechanismFor measuring the acceleration of object under test. Fixture is for providing measurement mechanism and signal transmitting apparatusSupport and protection. Signal transmitting apparatus is transferred to signals collecting for the acceleration signal that measurement mechanism is recorded and establishesStandby.
As depicted in figs. 1 and 2, fixture comprise housing 1, bunch pipe 5, bunch screw 6, nut 7,Packing ring 10 and top cover 11. Housing 1 entirety is the cuboid of the hollow of upper end open. At housing 1 cuboidShape has two fixed vias along housing 1 short transverse on two relative angles. After housing 1 cuboidOn end face, have through hole. Top cover 11 entirety are that square is tabular, cover on the upper surface of housing 1. Top cover11 have two through holes with housing 1 fixed via correspondence position, and two through holes lead to the fixing of housing 1 respectivelyMatch in hole, for vibrating sensor structure is fixed on to object under test. As shown in Figure 3 and Figure 4, bundleSpool 5 entirety are "T"-shaped, are made up of the cylinder of upper and lower two hollows, and the cylindrical external diameter in upper end is greater thanThe cylindrical external diameter in lower end, the cylindrical internal diameter in upper end is greater than the cylindrical internal diameter in lower end, and upper end is cylindricalExternal diameter is greater than the diameter of through hole on housing 1 cuboid rear end face, and the cylindrical external diameter in lower end is less than or equal to shellThe diameter of through hole on body 1 cuboid rear end face. In upper end, cylindrical front end has through hole, in this through holeThere is internal thread on surface. The cylindrical outer surface in lower end has external screw thread. Upper end cylinder is positioned at housing 1 inside,Cylinder through hole from housing 1 cuboid rear end face in lower end passes. Nut 7 and bunch pipe 5 lower end cylindersBody is threaded. Nut 7 is for being fixed on housing 1 by bunch pipe 5. As shown in Figure 5 and Figure 6, padCircle 10 entirety are annular, have breach on annulus, and annulus external diameter is less than or equal to bunch pipe 5 upper end cylindersInternal diameter. Packing ring 10 is arranged on bunch pipe 5 cylindrical inside, upper end, packing ring 10 annulus breach and bunchThe through hole of managing 5 upper end cylinder front ends staggers. Bunch screw 6 is that upper surface has gap along diametric(al)M3 type screw. Bunch screw 6 is connected with the through hole whorl that the bunch pipe 5 cylindrical front ends in upper end have, bundleThe tip of line screw 6 contacts with the outer surface of packing ring 10.
In the present embodiment, housing 1, bunch pipe 5, bunch screw 6, nut 7, packing ring 10 and top cover 11All adopt aluminum alloy materials to make. The thickness of housing 1 is 1.5mm. The overall size of housing 1 and top cover 11 is27×27×21mm。
As shown in Figure 2, signal transmitting apparatus comprises wire 3, cable 8 and electric connector 9. One of wire 3End is connected with measurement mechanism, and the other end is connected with one end of cable 8. The other end of cable 8 and electric connectorOne end connect. The other end of electric connector is connected with signal collecting device. Wire 3 is from the bundle of fixtureThe inside of spool 5 is passed, and passes the inside of packing ring 10 simultaneously.
In the present embodiment, wire 3, cable 8 and electric connector 9 are general-purpose device, can purchase from the market.
As shown in Figure 7, measurement mechanism comprises rigid-flexible combined circuit plate 2 and sensitive core body 4. Rigid-flexible combined circuitPlate 2 comprise the first rigid plate 12-1, the second rigid plate 12-2, the 3rd rigid plate 12-3, the 4th rigid plate 12-4,The first flex plate 13-1, the second flex plate 13-2 and the 3rd flex plate 13-3. The first rigid plate 12-1 and the 3rdRigid plate 12-3 connects by the second flex plate 13-2. The second rigid plate 12-2 and the 3rd rigid plate 12-3 are logicalCrossing the first flex plate 13-1 connects. The 3rd rigid plate 12-3 and the 4th rigid plate 12-4 are by the 3rd flex plate13-3 connects. The first rigid plate 12-1, the second rigid plate 12-2, the 3rd rigid plate 12-3 and the 4th rigid plate12-4 all adopts four-sheet structure, is followed successively by one deck signals layer, two-layer internal signal layer and bottom from top to bottom.Signals layer is for welding component, and internal signal layer is for wiring, and bottom is used for the housing 1 with fixtureConnect and the isolation of insulating. The first rigid plate 12-1, the second rigid plate 12-2, the 3rd rigid plate 12-3 and the 4thRigid plate 12-4 all adopts epoxy glass fabric pressing plate to make. The first flex plate 13-1, the second flex plate 13-2 andThe 3rd flex plate 13-3 all adopts double panel structure, between two-ply, connects up. The first flex plate 13-1, secondFlex plate 13-2 and the 3rd flex plate 13-3 all adopt polyimide material to make. Sensitive core body 4 has three,Be welded on respectively on the signals layer of the first rigid plate 12-1, the second rigid plate 12-2 and the 3rd rigid plate 12-3.The power end of sensitive core body 4 is connected with the voltage adjuster in rigid plate 12, the output of sensitive core body 4 withThe front end of rigid plate 12 up conversion circuit connects. The first rigid plate 12-1 is fixed on the right side inwall of housing 1,The second rigid plate 12-2 is fixed on the front side inwall of housing 1, and the 4th rigid plate 12-4 is fixed on housing 1In inner left wall, the 3rd rigid plate 12-3 is fixed on the downside inwall of housing 1. Leading of signal transmitting apparatusLine 3 respectively with the first rigid plate 12-1, the second rigid plate 12-2, the 3rd rigid plate 12-3 and the 4th rigid plateThe signals layer welding of 12-4.
In the present embodiment, the circuit connecting relation of rigid-flexible combined circuit plate 2 is definite according to GJB362B-2009,Sensitive core body 4 adopts 1221 core bodies that SDI company produces to realize.
Before test, first rigid-flexible combined circuit plate 2 is bonded in to four inner surfaces of housing 1, is welded with sensitivityThree orthogonal thereto distributions of rigid plate 12 of core body 4. The wire 3 again cable 8 being connected is by housing 1 rear endThrough hole on face penetrates housing 1 inside, bunch pipe 5 and packing ring 10 is through on cable 8, by bunch screw6 tip holds out against packing ring 10. Then the wire 3 and the rigid plate 12 that cable 8 are connected are welded, with nut 7Bunch pipe 5 is fixed on housing 1. Finally top cover 11 is bonded on the upper surface of housing 1 to sensorStandard completes.
When test, sensor construction is fixed on the tested surface of object under test, to survey by two M3 screwsThe acceleration of amount object under test in three directions. The result recording is through wire 3, cable 8 and electric connector 9Export to signal collecting device.
The present invention includes fixture, signal transmitting apparatus and measurement mechanism. Print by adopting four rigidityThe integrated design of plate and three flex plates, realized interface reliability connect, saved sensor inPortion space, obviously reduces the signal noise in signals transmission. Application the present invention has produced 5 samplesMachine, and in Vibrating Sensor Calibration system, carried out the checking of performance indications, in band, unevenness is less than 1dBCondition under, the Frequency Response of sensor all can reach 5KHz. After integrated design, the filter of five model machinesWave energy and voltage-regulating circuit function are all working properly, in the sensitivity and final output signal of three directionsThe dry value of noise all meet the requirement of test.
Claims (7)
1. a three-axial vibration sensor construction, is characterized in that: it comprises fixture, signal transmission dressPut and measurement mechanism; Measurement mechanism is fixedly connected on fixture inside; Signal transmitting apparatus is from fixtureOutside penetrates into fixture inside, is fixedly connected with fixture; Signal transmitting apparatus also with measurement mechanismConnect; Measurement mechanism is for measuring the acceleration of object under test; Fixture is used for measurement mechanism and signalTransmitting device provides support and protects; Signal transmitting apparatus passes for the acceleration signal that measurement mechanism is recordedBe defeated by signal collecting device.
2. three-axial vibration sensor construction according to claim 1, is characterized in that: described is fixingDevice comprises housing (1), bunch pipe (5), bunch screw (6), nut (7), packing ring (10) and topLid (11); Housing (1) entirety is the cuboid of the hollow of upper end open; At housing (1) cuboidOn two relative angles, have two fixed vias along housing (1) short transverse; At housing (1) cuboidOn shape rear end face, have through hole; Top cover (11) entirety is that square is tabular, covers the upper end in housing (1)On face; Top cover (11) has two through holes with housing (1) fixed via correspondence position, and two through holes respectivelyMatch with the fixed via of housing (1), for vibrating sensor structure is fixed on to object under test; BundleSpool (5) entirety is "T"-shaped, is made up of the cylindrical external diameter in upper end the cylinder of upper and lower two hollowsBe greater than the cylindrical external diameter in lower end, the cylindrical internal diameter in upper end is greater than the cylindrical internal diameter in lower end, upper end cylinderThe external diameter of body is greater than the diameter of through hole on housing (1) cuboid rear end face, and the cylindrical external diameter in lower end is less thanEqual the diameter of through hole on housing (1) cuboid rear end face; In upper end, cylindrical front end has through hole,This through-hole inner surface has internal thread; The cylindrical outer surface in lower end has external screw thread; Upper end cylinder is positioned at housing(1) inside, cylinder through hole from housing (1) cuboid rear end face in lower end passes; Nut (7) withBunch pipe (5) lower end cylinder is threaded; Nut (7) is for being fixed on housing (1) by bunch pipe (5)On; Packing ring (10) entirety is annular, has breach on annulus, and annulus external diameter is less than or equal to bunch pipe (5)The cylindrical internal diameter in upper end; Packing ring (10) is arranged on cylindrical inside, bunch pipe (5) upper end, packing ring (10)The through hole of annulus breach and bunch pipe (5) upper end cylinder front end staggers; Bunch screw (6) is upper surfaceHave the M3 type screw of gap along diametric(al); Bunch screw (6) is cylindrical with bunch pipe (5) upper endThe through hole whorl that front end has connects, and the tip of bunch screw (6) contacts with the outer surface of packing ring (10).
3. three-axial vibration sensor construction according to claim 2, is characterized in that: described housing(1), bunch pipe (5), bunch screw (6), nut (7) and top cover (11) all adopt aluminum alloy materialsMake; Packing ring (10) adopts soft aluminum to make; The thickness of housing (1) is 1.5mm; Housing (1)And the overall size of top cover (11) is 27 × 27 × 21mm.
4. three-axial vibration sensor construction according to claim 1, is characterized in that: described signalTransmitting device comprises wire (3), cable (8) and electric connector (9); One end and the measurement of wire (3)Device connects, and the other end is connected with the one end of cable (8); The other end of cable (8) and electric connectorOne end connects; The other end of electric connector is connected with signal collecting device; Wire (3) is from the bundle of fixtureThe inside of spool (5) is passed, and passes the inside of packing ring (10) simultaneously.
5. three-axial vibration sensor construction according to claim 1, is characterized in that: described measurementDevice comprises rigid-flexible combined circuit plate (2) and sensitive core body (4); Rigid-flexible combined circuit plate (2) comprisesOne rigid plate (12-1), the second rigid plate (12-2), the 3rd rigid plate (12-3), the 4th rigid plate (12-4),The first flex plate (13-1), the second flex plate (13-2) and the 3rd flex plate (13-3); The first rigid plate (12-1)Be connected by the second flex plate (13-2) with the 3rd rigid plate (12-3); The second rigid plate (12-2) and theThree rigid plate (12-3) connect by the first flex plate (13-1); The 3rd rigid plate (12-3) is firm with the 4thProperty plate (12-4) by the 3rd flex plate (13-3) connect; The first rigid plate (12-1), the second rigid plate(12-2), the 3rd rigid plate (12-3) and the 4th rigid plate (12-4) all adopt four-sheet structure, by upperExtremely, be followed successively by one deck signals layer, two-layer internal signal layer and bottom; Signals layer is used for welding component, inPortion's signals layer is for wiring, and bottom is for being connected and the isolation of insulating with the housing (1) of fixture; First scratchesProperty plate (13-1), the second flex plate (13-2) and the 3rd flex plate (13-3) all adopt double panel structure,Between two-ply, connect up; Sensitive core body (4) has three, is welded on respectively the first rigid plate (12-1),On the signals layer of two rigid plate (12-2) and the 3rd rigid plate (12-3); The power end of sensitive core body (4)Be connected the output of sensitive core body (4) and rigid plate (12) with the voltage adjuster in rigid plate (12)The front end of up conversion circuit connects; The first rigid plate (12-1) is fixed on the right side inwall of housing (1),The second rigid plate (12-2) is fixed on the front side inwall of housing (1), and the 4th rigid plate (12-4) is fixingIn the inner left wall of housing (1), the 3rd rigid plate (12-3) is fixed on the downside inwall of housing (1);The wire (3) of signal transmitting apparatus respectively with the first rigid plate (12-1), the second rigid plate (12-2),The signals layer welding of three rigid plate (12-3) and the 4th rigid plate (12-4).
6. three-axial vibration sensor construction according to claim 5, is characterized in that: described firstRigid plate (12-1), the second rigid plate (12-2), the 3rd rigid plate (12-3) and the 4th rigid plate (12-4)All adopt epoxy glass fabric pressing plate to make; The first flex plate (13-1), the second flex plate (13-2) and the 3rdFlex plate (13-3) all adopts polyimide material to make.
7. three-axial vibration sensor construction according to claim 5, is characterized in that: described is rigid-flexibleThe circuit connecting relation of combined circuit plate (2) is determined according to GJB362B-2009, sensitive core body (4) employing1221 core bodies that SDI company produces are realized.
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| CN201410594846.2A CN105606200B (en) | 2014-10-29 | 2014-10-29 | A kind of three-axial vibration sensor structure |
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| CN201410594846.2A CN105606200B (en) | 2014-10-29 | 2014-10-29 | A kind of three-axial vibration sensor structure |
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| CN105606200A true CN105606200A (en) | 2016-05-25 |
| CN105606200B CN105606200B (en) | 2018-08-21 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106448121A (en) * | 2016-12-12 | 2017-02-22 | 北京强度环境研究所 | Wireless sensor |
| CN107703330A (en) * | 2017-11-07 | 2018-02-16 | 南京高华科技股份有限公司 | The acceleration sensor apparatus steadily comfortably detected for the axle of standard EMUs three |
| WO2024031783A1 (en) * | 2022-08-11 | 2024-02-15 | 瑞声声学科技(深圳)有限公司 | Vibration sensor |
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| CN101819060A (en) * | 2010-04-23 | 2010-09-01 | 江阴众和电力仪表有限公司 | Vibration transducer |
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| CN202002942U (en) * | 2010-12-09 | 2011-10-05 | 湖北航天技术研究院计量测试技术研究所 | Triaxial digital quartz flexible accelerometer |
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| CN103591962A (en) * | 2013-11-11 | 2014-02-19 | 北京航空航天大学 | Positioning and orienting instrument optical fiber strap-down inertial measurement unit for coal industry |
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| CN101819060A (en) * | 2010-04-23 | 2010-09-01 | 江阴众和电力仪表有限公司 | Vibration transducer |
| CN101876244A (en) * | 2010-06-03 | 2010-11-03 | 西安思坦仪器股份有限公司 | Inertia measuring unit and continuous inclinometer for dynamically tuned gyroscope |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106448121A (en) * | 2016-12-12 | 2017-02-22 | 北京强度环境研究所 | Wireless sensor |
| CN107703330A (en) * | 2017-11-07 | 2018-02-16 | 南京高华科技股份有限公司 | The acceleration sensor apparatus steadily comfortably detected for the axle of standard EMUs three |
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| Publication number | Publication date |
|---|---|
| CN105606200B (en) | 2018-08-21 |
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