CN103968747B - Bit andits control sensing device - Google Patents
Bit andits control sensing device Download PDFInfo
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- CN103968747B CN103968747B CN201410182588.7A CN201410182588A CN103968747B CN 103968747 B CN103968747 B CN 103968747B CN 201410182588 A CN201410182588 A CN 201410182588A CN 103968747 B CN103968747 B CN 103968747B
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Abstract
The present invention provides a kind of Bit andits control sensing device based on inductance principle, including transmission bracket, induction mechanism, measures conversion circuit, transmission commutator, transmission mechanism, induction mechanism is arranged in transmission bracket, including the metallic conductor that inductance coil and correspondence inductance coil are set；Transmission mechanism includes motor and drive screw, and motor is used to drive transmission commutator by drive screw inductance coil and metallic conductor move toward one another so that in induction mechanism；The inductance coil of measures conversion circuit and induction mechanism is electrically connected with, to change the space displacement changing value drawn corresponding to the linear displacement of the transmission commutator using the inductance variations of inductance coil.The present apparatus can be accurately measured the displacement of transmission commutator, and realizes the contactless accurate measurement to measured object.
Description
Technical field
The present invention relates to displacement measurement field, more particularly to a kind of Bit andits control sensing device based on inductance principle.
Background technology
Displacement measurement is the important component of Measurement and Control System, is played in electrical tilt antenna control field vital
Effect.Specifically, the change in displacement of the movable part of antenna is accurately measured by Bit andits control measurement apparatus, is fed back with this
And motor and transmission mechanism are further controlled, so as to realize the portions such as the phase shifter and reflecting plate in accurate adjustment electrical tilt antenna
Part, effectively changes the radiation scope of antenna, is particularly useful to the lower decline angle of accurate adjustment antenna, that is, refers to antenna and radiated
Reclining angle of the wave beam on spatial vertical direction.
Industry typically realizes electric tune using linear slide block sensor or rotational potentiometer device based on resistance principle
The measurement control of antenna displacements.It the advantage is that price is relatively low, measuring method simple, shortcoming is that volume is larger, environment is adapted to
Property it is poor, particularly when object of which movement produce space bias when easily cause measurement error.
Meanwhile, industry also has using mangneto formula Bit andits control sensing device or photoelectric displacement control sensing device to solve
The problem of in terms of measurement accuracy and measurement error, but its cost is too high and structure space is larger.
It can be seen that, it is of the prior art a variety of known applied to electromechanical controlling device, such as electromechanics of mobile communication antenna
The Bit andits control sensing device of control device, universal volume is bigger than normal, cost is higher, measurement accuracy is low and environmental suitability is poor, anxious
There need to be a kind of more advanced Bit andits control sensing device to replace.
The content of the invention
It is a kind of more accurately contactless based on inductance principle the present invention solves the technical problem of providing
Bit andits control sensing device.
In order to solve the above technical problems, the technical solution adopted by the present invention is：One kind is used for antenna beam direction and controls dress
The Bit andits control sensing device put, including transmission bracket, induction mechanism, measures conversion circuit, transmission commutator, transmission mechanism,
It is characterized in that：
The induction mechanism is arranged in the transmission bracket, including the metal that inductance coil and correspondence inductance coil are set
Conductor；
The transmission mechanism includes motor and drive screw, and the motor is used to drive the transmission to change by drive screw
To device so that inductance coil and metallic conductor move toward one another in the induction mechanism；
The measures conversion circuit, the inductance coil of itself and induction mechanism is electrically connected with, to utilize the inductance of inductance coil
Changing value conversion draws the space displacement changing value corresponding to the linear displacement of the transmission commutator.
Technical scheme disclosed in one embodiment of the present of invention is：
Specifically, the transmission bracket is tube-in-tube structure, the inductance coil is wrapped in transmission bracket, and the metal is led
Body is arranged concentrically with the inductance coil in coaxial；The drive screw is arranged concentrically with the transmission bracket to be coaxial, described
Metallic conductor is set on the drive screw, and the motor is used to drive the drive screw to rotate, the drive screw
Circular motion is converted to linear movement axially along a screw by transmission commutator；
Preferably, in the induction mechanism, provided with multiple inductor wires for being in series and spatially sequentially separately setting
Circle, each inductance coil is set in the transmission bracket periphery, and each inductance coil of correspondence is provided with the corresponding some metals of number
Conductor, axial direction of each metallic conductor along drive screw arranges and is sequentially fixedly connected.
More preferably, each metallic conductor is fixed in the axle upstream sequence along drive screw and concatenates or be integrally formed.
Wherein, in any of the above technical scheme, the metallic conductor can be cone-shaped.
The outer wall of the transmission commutator is provided with the guide groove axially extended, and the inwall of the transmission bracket is provided with and this
The positioner that guide groove matches, the transmission commutator is under the drive of drive screw, by the positioner to being oriented to
The guiding of groove, and be defined as axially doing linear movement along itself.The positioner, which can also be, is fixed on the transmission branch
Pin or axle on frame inwall.
The alternative of linear movement is done along its axial direction as limitation transmission commutator, can also be by the transmission commutator
Outer wall be multi-edge column-shaped, the outer wall shape of inner surface and the transmission commutator is adapted at the transmission bracket opening.
Technical scheme disclosed in an alternative embodiment of the invention is:
Specifically, the transmission bracket is the platy structure being made up of two support frames that is connected by support shaft,
The transmission commutator threaded one end through the support shaft is connected to the drive screw, and other end clamping includes the sense
The measuring circuit plate of coil is answered, the induction coil is plane induction coil, the metallic conductor and the measuring circuit plate
It is arranged in parallel and is fixed on the flat board on described two support frames.
Preferably, the drive screw in the transmission mechanism includes main transmission screw rod and auxiliary driving screw rod, main transmission screw rod
The gear drive group for realizing speed change is connected between auxiliary driving screw rod, the motor is driven by the transmission mechanism and passed
Dynamic commutator, the auxiliary driving screw rod is arranged on described two support frames, and the transmission commutator is threadedly connected to auxiliary driving
On screw rod.
The induction coil is etched by printed circuit board copper clad layers and formed, and the metallic conductor is by printed circuit board copper clad layers
Etching triangularity trapezoidal is formed.
The present invention has the beneficial effect that：This programme is based on inductance principle, when metallic conductor and induction coil relative motion,
The change of inductance value produced by by measuring in induction coil, you can be converted into the change of mobile commutator displacement, so that real
Now to the measurement of outside measured object displacement.
Brief description of the drawings
Fig. 1 is the principle schematic of the Bit andits control sensing device of the invention based on inductance principle；
Fig. 2 is the circuit theory diagrams of the measures conversion device in the present invention；
Fig. 3 is the structural representation of one embodiment of the present of invention；
Fig. 4 is the schematic diagram for cascading induction coil and cascade metallic conductor；
Fig. 5 is the structure chart of cone-shaped metal conductor；
Fig. 6 is the cone-shaped metal conductor structure figure with many cones of integral type.
Fig. 7 is the work demonstration graph of another embodiment of the present invention；
Fig. 8 is the schematic diagram of the measuring circuit plate of another embodiment of the present invention；
Fig. 9 is the schematic diagram of the impedance circuit plate of another embodiment of the present invention；
Figure 10 is a kind of working state schematic representation of another embodiment of the present invention；
Figure 11 is another working state schematic representation of another embodiment of the present invention；
Figure 12 is a kind of structural representation of another embodiment of the present invention.
Embodiment
The present invention is described in detail with reference to the accompanying drawings and examples.One kind that the present invention is disclosed is based on inductance principle
Bit andits control sensing device, referring to Fig. 1, it include be used for directly or indirectly perceive unit under test movement induction coil and
Change and draw the measures conversion device of accordingly result data for calculating the inductance of induction coil, by a such as cable, admittedly
There is the signal connection device of joint etc, the calculation result data of measures conversion device can be read and is used.
Fig. 2 is the circuit theory diagrams of the measures conversion device.As shown in Fig. 2 measures conversion device 303 includes electricity in parallel
Hold 201, inductance conversion chip 202, the capacitance resistance component 203 and printed circuit board (not shown) that are worked for measuring circuit,
Shunt capacitance 201, inductance conversion chip 202, capacitance resistance component 203 are respectively provided with a printed circuit board, are set on printed circuit board
The external interface 204 with multiple stitch electric connection of the inductance conversion chip 202 is equipped with, to realize outside set and displacement
Control the signal intercommunication of sensing device.Specifically, the shunt capacitance 201 is in parallel with the induction coil, accesses in the lump
Two stitch of inductance conversion chip 202, so that inductance conversion chip 202 can read the inductance variations of inductance coil 301, enter
And the inductance variations are converted to the actual spatial position change value of unit under test by inductance conversion chip 202.
The principle that Bit andits control sensing device of the present invention is realized is：Under the driving of motor 304, by subsequently taking off
The a series of drive connection shown, makes the unit under test generation linear displacement (not shown) being connected on transmission commutator 308, and
Transmission commutator 308 and the metallic conductor 302 that links, when transmission commutator 308 is subjected to displacement, metallic conductor 302 is also along sensing
Coil 301 it is axially displaced, cause the inductance value of induction coil 301 to change, measures conversion device 303 will be measured
The inductance variations that occur of induction coil 301 be converted into the real space change in displacement value of metallic conductor 302, and pass through signal
This change in displacement value is passed to external receiver such as system control panel by attachment means 100.Due to the displacement of metallic conductor 302
(amount) can be associated by the displacement (amount) of those skilled in the art and the phase shift component of phase shifter in advance, thus, external reception
Device just can calculate the amount of phase shift of electric regulation antenna phase shifter accordingly and then can obtain the antenna beam reclining angle because of caused by phase shift
Angle change, then row controlled motor 304 is acted and made the adjustment of phase shift operation again, is thus achieved electrical tilt antenna
Phase controlling.It is appreciated that in order to reach the effect of the invention accurately measured, metallic conductor 302 can use up with inductance coil
Measure and set in coaxial concentric mode.
A kind of Fig. 3 the of circuit shown in realization Fig. 2 of the present invention implements structure.Bit andits control sensing device as shown in Figure 3
In physical arrangement, including with drive screw 306 in the circular transmission bracket 307 being coaxially arranged concentrically, metallic conductor 302, transmission
Commutator 308, induction coil 301, metallic conductor 302 and the motor for driving the execution circular motion of drive screw 306
304.Induction coil 301 is wrapped with the circular outer surface of transmission bracket 307, measures conversion device 303 is arranged on transmission bracket 307
It is outside.The transmission commutator 308 of cylinder is arranged in transmission bracket 307, occupy the open front of transmission bracket 307, can be along biography
Dynamic support 307 slides axially, and can skid off outside transmission bracket 307.Transmission commutator 308 one end and cone in transmission bracket 307
The taper end of shape metallic conductor 302 is fixedly connected.The outer wall of transmission commutator 308 is provided with a guide groove 310 vertically, in transmission bracket
The positioner that 307 inwall is provided with and guide groove 310 is engaged, straight line can only be done vertically to limit transmission commutator 308
Motion, the positioner both can be the fastener 311 on the inwall of transmission bracket 307 of being buckled in positioning function, also may be used
With the pin being integrally fixed on the inwall of transmission bracket 307.Certainly, transmission commutator 308 can be also arranged to section has pros
The shape of shape outline, can also be other regular polygon outer contour shapes, and transmission bracket 307 connects with transmission commutator 308
Socket part point is coordinated with respective shapes, can also be reached that guarantee transmission commutator 308 slides axially in transmission bracket 307 and be done straight line
The effect of motion.The centered cylinder through hole 312 passed through for drive screw 306, the center are provided with the axial direction of metallic conductor 302
The aperture of cylindrical hole 312 is more than the diameter of drive screw 306, it is to avoid both contact friction, the drive screw that motor 304 is exported
306 pass through the central through hole of metallic conductor 302 to be threadedly coupled with transmission commutator 308.In the present embodiment, drive screw 306, gold
Category conductor 302, transmission commutator 308 are arranged concentrically with transmission bracket 307 to be coaxial, and correspondingly, induction coil 301 and metal are led
Body 302 is also coaxially to be arranged concentrically.Transmission bracket 307 is fastenedly connected with motor 304 by connection member 305.In practice, it is electric
The driving drive screw 306 of machine 304 moves in a circle, and is limited by positioner, drive of the transmission commutator 308 in drive screw
Under be only capable of in the inwall linear slide of transmission bracket 307 so that by the circular motion torque of drive screw 306 be converted to transmission commutation
The linear movement torque of device 308 itself, and drive metallic conductor 302 to produce displacement into induction coil 301, now, the line of induction
The inductance value of circle 301 will be changed, and the inductance value changes of induction coil 301 are measured by measures conversion device 303, you can be turned
The change in displacement of cone-shaped metal conductor 302 is changed into, because transmission commutator 308 passes through the device phases such as external drive link and phase shifter
Connection, therefore, the change in displacement of metallic conductor 302 also corresponds to the phase place change of electric regulation antenna phase shifter, further corresponds to
The angle change at antenna beam reclining angle, thus just using Bit andits control sensing device one side phase shift of the present invention while observation
Amount of phase shift, so as to realize the phase controlling of electrical tilt antenna.Can suitably it increase in order to strengthen the intensity of transmission bracket 307, outside it
Reinforcement.
In above example, the metallic conductor and one group of coil of a taper constitute a sensing unit, the sensing unit
It is that inductance variations can be achieved by motion of the metallic conductor in the coil in the induction mechanism independently into an induction mechanism
Detection, according to this principle, this induction mechanism can be expanded by concatenating multiple such sensing units so that
Realize that stroke spread is measured.
Fig. 4 is the schematic diagram for the Bit andits control sensing device for realizing stroke spread.As shown in figure 4, at least two section identicals
Cone-shaped metal conductor aligned arrangement, which is sequentially mutually fixed into, to be connected in series, corresponding, it is provided with number in transmission bracket 307
With the multiple induction coils of metallic conductor number identical, there is spacing between two neighboring induction coil, be approximately equal to two and mutually fix
Metallic conductor between spacing, similarly, be also sequentially connected in series between multiple induction coils, be consequently formed it is multiple as before
Sensing unit shown in one embodiment, so as to constitute the induction mechanism in the present embodiment.Ensureing metallic conductor in transmission bracket
In the case that mobile space is enough, its working condition is, it is assumed that initial position be N grades of cone-shaped metal thing 302n minimum diameters everywhere
In the entry position of one-level coil 3011, its inductance value is L1；Final position be N grades of cone-shaped metal thing 302n maximum gauges everywhere
In N grades of coil 301n entry position, its inductance value is Ln；So when gearshift from initial position is moved to final position
During measurement inductance value will become greater to Ln from L1, its variable quantity is N times of variable quantity when single-stage cone-shaped metal conductor is moved, logical
The measurement stroke that measures conversion can be achieved N times is crossed, so as to meet the measurement demand of contactless big stroke.Here, N can root
Chosen according to the length L of total kilometres S and single-unit cone-shaped metal thing, i.e. N=S/L is simultaneously rounded forward.
It is preferred that, Fig. 5 illustrates a kind of structure chart of the cone-shaped metal conductor of Bit andits control sensing device.As shown in figure 5,
The principal character of single-stage cone-shaped metal conductor include cone 302, axial centre cylindrical hole 312, cone-shaped metal conductor taper end
External screw thread 316 and the internal thread of its thick end portion 315.The taper end of cone-shaped metal conductor is threadedly coupled with transmission commutator 308.
Multiple cone-shaped metal conductors as shown in Figure 5 can also be sequentially connected in series, pass through the taper end of each cone-shaped metal conductor and butt end
Internal and external threads are respectively cooperating with, you can connection forms tandem type cone-shaped metal conductor.
In addition, Fig. 6 also illustrates a kind of structure chart of the cone-shaped metal conductor with multiple cones of integral type.Such as Fig. 6
Shown, the cone-shaped metal conductor is to be integrally machined to be formed by a cylindrical metal thing, including it is equidirectional process at least two
Level cone, the tandem type cone-shaped metal conductor is also machined with axial cylindrical through hole 312, passed through with facilitating drive screw 306.
In the present embodiment, the material of described cone-shaped metal conductor can be aluminium, aluminium alloy, and copper or copper alloy also may be used
To be the alloy material of steel or iron.
Fig. 7 to Figure 12 also illustrates another embodiment of the present invention.
Referring to Fig. 7, Fig. 7 is the work demonstration graph of another embodiment of the present invention, upper plate is measuring circuit plate, lower plate in figure
For impedance circuit plate.Measuring circuit plate is moved in parallel along X-direction relative to impedance circuit plate, and impedance circuit plate is fixed.
As shown in figure 8, measuring circuit plate is made up of printed coil (plane induction coil), measures conversion circuit, signal connecting line, its
Middle printed coil is directly formed by printed circuit board copper clad layers by etching, and measures conversion circuit is then by being welded on same printing
The shunt capacitance of circuit board, inductance conversion chip, the capacitance resistance component realization worked for measuring circuit.
Realized as shown in figure 9, impedance circuit plate forms triangle by printed circuit board copper clad layers by etching, printing electricity
The effect of road plate copper clad layers is the effect of heretofore described metallic conductor.The concrete form that the application is realized is measuring circuit
Plate is connected with control transmission mechanism, and control transmission mechanism drives measuring circuit plate to be moved along X-direction；Impedance circuit plate is just right
Below measuring circuit plate, and it is fixed on support frame；Measuring circuit plate will do relatively flat relative to impedance circuit plate in practice
Row motion.
Figure 10, Figure 11 are that schematic diagram of the another embodiment of the present invention under different working condition, i.e. measuring circuit plate are run
To schematic diagram during impedance circuit plate diverse location.
Figure 12 is the structural representation of another embodiment of the present invention.Motor 304 is arranged on and is made up of two support frames 319
Transmission bracket on, two support frames 319 are connected by support shaft 318 and keep fixed, and motor 304 is defeated by final drive shaft 320
Go out driving moment, and drive counter drive shaft 321 to move in a circle by a pair of gear drive groups 322.The one end of transmission commutator 317
It is threadedly coupled with counter drive shaft 321, its other end clamping measuring circuit plate 323, and can be along being fixed on two support frames 319
The plane that impedance circuit plate 324 is formed is moved axially along counter drive shaft 321, now measuring circuit plate 323 and impedance circuit plate
324 opposing parallel settings, support shaft 318 passes through the hole opened up on transmission commutator 317, to support transmission commutator and limit
Transmission commutator 317 processed does linear movement.Measuring circuit plate 323 is by plane induction coil 301, measures conversion circuit 303, letter
Number connecting line 100 is constituted, and its planar-type induction coil 301 is directly formed by printed circuit board copper clad layers by etching, measurement
Change-over circuit 303 is then by being welded on the shunt capacitance of same printed circuit board, inductance conversion chip and for measuring circuit
The capacitance resistance component of work is realized.Impedance circuit plate 324 is realized by printed circuit board copper clad layers form triangle by etching.
Obviously, according to measuring circuit plate and the situation of impedance circuit plate relative motion, printed circuit board copper clad layers etching is also in echelon
Measurement request can be realized.
The operation principle of the present embodiment is that the driving final drive shaft 320 of motor 304 is rotated, and final drive shaft 320 is passed by gear
Dynamic group 322 drives counter drive shaft to rotate and drive transmission commutator 317 to be axially moved along counter drive shaft, the band of transmission commutator 317
It is dynamic that measuring circuit plate 323 is opposing parallel is moved along a straight line in impedance circuit plate.As shown in Figure 10, Figure 11, when measuring circuit plate
Induction coil relative to impedance circuit plate triangle copper sheet diverse location when, its caused self-inductance L value is also different.
Because the triangle copper sheet area below induction coil is approximately linear gradual change, therefore inductance value L also will be proximal line
Property gradual change.When measuring circuit plate is moved to the other end from impedance circuit plate one end, measures conversion circuit becomes approximately linear
The inductance value L of change is converted into corresponding numeral or analog signal, and is exported by signal connecting line, outside control main circuit
Converted by software and L change is converted into the change of displacement to realize the measurement of displacement.
In electrical tilt antenna closed-loop control system, while control transmission mechanism is connected with antenna phasing unit, pass through machine
Structure is connected with measuring circuit plate, and during antenna phasing unit is adjusted, measuring circuit plate also can be relative to impedance circuit plate
Produce displacement；And change in displacement is changed into the change of L amounts by measures conversion circuit, main controller is again by software algorithm by L amounts
Change be converted into the change of actual displacement, so as to be accurately controlled the phase of antenna phasing unit.
It is in fact, above-described embodiment can also further simplify, i.e., straight by being erected at motor outside two support frames
Connect and export power to being connected across power transmission shaft on two support frames, power transmission shaft stretch out outside transmission bracket with outside measured object phase
Connection, transmission commutator is threadedly coupled in the middle of two support frames with power transmission shaft.So as to realize the simplification of structure of the present invention.
In summary, Bit andits control sensing device involved in the present invention, it is while outside output displacement torque, energy
It is synchronous to realize the accurately detecting to the displacement of unit under test.
Embodiments of the invention are the foregoing is only, are not intended to limit the scope of the invention, it is every to utilize this hair
Equivalent structure or equivalent flow conversion that bright specification and accompanying drawing content are made, or directly or indirectly it is used in other related skills
Art field, is included within the scope of the present invention.
Claims (10)
1. a kind of Bit andits control sensing device, including transmission bracket, induction mechanism, measures conversion circuit, transmission commutator, transmission
Mechanism, it is characterised in that：
The induction mechanism is arranged in the transmission bracket, including the metal that inductance coil and correspondence inductance coil are set is led
Body；
The transmission mechanism includes motor and drive screw, and the motor is used to drive the transmission commutator by drive screw
So that inductance coil and metallic conductor relative motion in the induction mechanism, the metallic conductor is in cone-shaped；
The measures conversion circuit, the inductance coil of itself and induction mechanism is electrically connected with, to be changed using the inductance of inductance coil
Value conversion draws the space displacement changing value corresponding to the linear displacement of the transmission commutator.
2. Bit andits control sensing device according to claim 1, it is characterised in that the transmission bracket is tube-in-tube structure,
The inductance coil is wrapped in transmission bracket, and the metallic conductor is arranged concentrically with the inductance coil in coaxial；It is described to pass
Dynamic screw rod is arranged concentrically with the transmission bracket to be coaxial, and the metallic conductor is set on the drive screw, the motor
For driving the drive screw to rotate, the circular motion of the drive screw is converted to axially along a screw by transmission commutator
Linear movement.
3. Bit andits control sensing device according to claim 2, it is characterised in that in the induction mechanism, provided with multiple
The inductance coil for being in series and spatially sequentially separately setting, each inductance coil is set in the transmission bracket periphery,
Each inductance coil of correspondence is arranged and suitable provided with the corresponding some metallic conductors of number, each metallic conductor along the axial direction of drive screw
It is secondary to be fixedly connected.
4. Bit andits control sensing device according to claim 3, it is characterised in that each metallic conductor is driven spiral shell on edge
The axle upstream sequence of bar is fixed concatenation or is integrally formed.
5. Bit andits control sensing device as claimed in any of claims 2 to 4, it is characterised in that the transmission is changed
The guide groove axially extended is provided with to the outer wall of device, the inwall of the transmission bracket is provided with the positioning matched with the guide groove
Device, the transmission commutator is guided under the drive of drive screw by the positioner to guide groove, and is defined as
Axially linear movement is done along itself.
6. Bit andits control sensing device according to claim 5, it is characterised in that the positioner is described to be fixed on
Pin or axle on transmission bracket inwall.
7. Bit andits control sensing device as claimed in any of claims 2 to 4, it is characterised in that the transmission is changed
Mutually fitted to the outer wall shape that the outer wall of device is inner surface and the transmission commutator at multi-edge column-shaped, the transmission bracket opening
Should.
8. Bit andits control sensing device according to claim 1, it is characterised in that the transmission bracket is to pass through support shaft
The platy structure being made up of two support frames connected, the transmission commutator threaded one end through the support shaft connects
The drive screw is connected to, the other end clamps the measuring circuit plate for including the induction coil, and the induction coil is plane
Induction coil, the metallic conductor be arranged in parallel and is fixed in the flat board on described two support frames with the measuring circuit plate
On.
9. Bit andits control sensing device according to claim 8, it is characterised in that the drive screw in the transmission mechanism
Including main transmission screw rod and auxiliary driving screw rod, the gear for realizing speed change is connected between main transmission screw rod and auxiliary driving screw rod
Transmission group, the motor drives transmission commutator by the transmission mechanism, and the auxiliary driving screw rod is arranged at described two
On support, the transmission commutator is threadedly connected on auxiliary driving screw rod.
10. Bit andits control sensing device according to claim 8 or claim 9, it is characterised in that the induction coil is by printing electricity
Road plate copper clad layers etch to be formed, and the metallic conductor is etched triangularity by printed circuit board copper clad layers or trapezoidal formed.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410182588.7A CN103968747B (en) | 2014-04-30 | 2014-04-30 | Bit andits control sensing device |
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| CN201410182588.7A CN103968747B (en) | 2014-04-30 | 2014-04-30 | Bit andits control sensing device |
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| CN103968747A CN103968747A (en) | 2014-08-06 |
| CN103968747B true CN103968747B (en) | 2017-10-13 |
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| RU2816124C2 (en) * | 2022-05-30 | 2024-03-26 | Федеральное государственное казенное военное образовательное учреждение высшего образования "ВОЕННАЯ АКАДЕМИЯ МАТЕРИАЛЬНО-ТЕХНИЧЕСКОГО ОБЕСПЕЧЕНИЯ имени генерала армии А.В. Хрулева" | Displacement sensor with high resolution |
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| CN101149247A (en) * | 2007-10-30 | 2008-03-26 | 上海第二工业大学 | Multiple core tandem electric inductance sensor |
| CN201463829U (en) * | 2009-07-08 | 2010-05-12 | 柯振辉 | Stroke induction device of lifting motor |
| CN102620754A (en) * | 2011-02-22 | 2012-08-01 | 罗兰克斯两合有限公司 | Inductive position sensor |
| CN203024724U (en) * | 2013-01-05 | 2013-06-26 | 中国水利水电科学研究院 | Displacement detector |
| CN203824512U (en) * | 2014-04-30 | 2014-09-10 | 京信通信技术(广州)有限公司 | A displacement control sensing device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2816124C2 (en) * | 2022-05-30 | 2024-03-26 | Федеральное государственное казенное военное образовательное учреждение высшего образования "ВОЕННАЯ АКАДЕМИЯ МАТЕРИАЛЬНО-ТЕХНИЧЕСКОГО ОБЕСПЕЧЕНИЯ имени генерала армии А.В. Хрулева" | Displacement sensor with high resolution |
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