CN105424244B - A kind of contactless self-generating wireless torque sensor - Google Patents
A kind of contactless self-generating wireless torque sensor Download PDFInfo
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- CN105424244B CN105424244B CN201510801588.5A CN201510801588A CN105424244B CN 105424244 B CN105424244 B CN 105424244B CN 201510801588 A CN201510801588 A CN 201510801588A CN 105424244 B CN105424244 B CN 105424244B
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Abstract
The present invention provides a kind of contactless self-generating wireless torque sensor, sensor generally detachable structure, itself it is two intermeshing semicircle ring structures being connected with torque axis by screw, sensor has self power generation and wireless data transmission function, sensor does not need any cable connection with the external world, it uses and is not required to consider wiring problem when installing, itself it is brushless electricity generator structure, self-generating when operating, it powers for wireless data transmission and data processing chip, has accomplished real wireless measurement；High-performance wireless serial port module, data transmission bauds is fast, and communication band is roomy, not needing interconnecting device can be with host computer direct communication, be not in circuit damage failure in use because sensor does not have any cable, equipment dependability is greatly improved.
Description
Technical field
The present invention relates to technical field of automation, are related to a kind of torque-measuring apparatus, more particularly to it is a kind of it is contactless from
Generate electricity wireless torque sensor.
Background technology
Transfer mode according to signal, the energy is different, and dynamic torque sensor can be divided into collecting ring type and FM transmission
Machine formula two categories.
Collecting ring type torque sensor transmits signal by the even more multigroup fine silver of 4-16 or platinum collecting ring and carbon brush,
The presence of collecting ring prevents shaft from bearing very high rotating speed, even if being cooled down using air cooling-down or liquid, carbon brush still meeting
It gradually wears out, signal noise can increase with using.And with the increase of number of vias, slip ring length can be lengthened gradually, friction
The dust of generation is easy accumulation, and pressure resistance is insufficient between causing adjacent ring, and interference is generated between signal, and collecting ring type is not appropriate for growing
Time and multi-channel data communication.
Frequency modulation transmitter formula torque sensor transmits signal and the energy to the elastic shaft rotated, although going by radiofrequency signal
In addition to the easy damage device such as collecting ring, but there is still a need for carry out data transmission by data line between sensor and host computer.
With the increase of data channel, the quantity of the communications cable can also increase, and increase installation difficulty.Simultaneously when carry out deep drilling exploration or
When site environment complexity, the data line and power cord of torque sensor are easily intertwined or circuit breakage is led caused by abrasion
Cause dropout.
Above existing two kinds of sensors, have only accomplished the wireless data exchange between elastic shaft and sensor housing, pass
Sensor is whole there is still a need for powering or connecting data cable, and there is no the wireless issues for solving sensor from the root cause.It is existing simultaneously
Torque sensor be all made of the structure of detection part and elastic shaft rigid connection, when any part damage of sensor is required for
Integral demounting is safeguarded.The frequency modulation transmitter formula torque sensor especially generally used now is straight with elastic shaft by foil gauge
It connects and is pasted together, foil gauge is scrapped can not be continuing with therewith when elastic shaft damages, and causes great waste.
Invention content
In order to overcome the above-mentioned deficiencies of the prior art, the present invention provides a kind of contactless self-generating wireless torque sensings
Device is integrally wirelessly connected between sensor and host computer, solves the problems, such as existing sensor power supply and multi-channel data transmission.
The technical solution adopted in the present invention is：
A kind of contactless self-generating wireless torque sensor, sensor generally cylindrical structure, cylinder is by passing through
Two semicircular rings of fastened by screw form, and sensor after screw combination by being fixed on torque axis, all components of sensor
It is installed in two semicircular rings, cylindrical structure is integrally made of shell, bearing, coil and inner casing, and two semicircular rings pass through
Screw is fixed on torque axis, and inner casing is fixed with torque axis, and shell is mounted on inner casing by bearing and can be rotated relative to inner casing,
Coil is fixed on inner casing, mosaic magnet on inner surface of outer cover, and coil forms brushless electricity generator structure, sensor with permanent magnet
When operating power supply is supplied for all components；Be also integrated with wireless serial module in the cylinder, sensor by RS232 with
Wireless serial module is connected, and all data that sensor detects are sent to host computer by wireless mode.
Further, the permanent magnet is neodymium iron boron strong magnet.
Further, transformer, rectifier bridge and multipath voltage regulation module, brushless generator are additionally provided in the cylinder to send out
Alternating current low voltage and direct current is become by decompression, rectification, then by multipath voltage regulation power supply be respectively that all components are powered.
Further, the component is all made of bayonet and is fixed in two semicircular rings.
Compared with prior art, the beneficial effects of the invention are as follows：
Cylinder is made of two semicircular rings being fixed by screw, and sensor after screw combination by being fixed on torque axis
On, detachable structure greatly reduces the maintenance time and cost of torque sensor, and coil forms brushless power-generating with permanent magnet
Machine structure, supplies power supply when sensor operation for all components, and the use of automatic generating structure makes what torque sensor was accomplished
Complete wireless penetration.Power generation part use magneto structure, eliminate excitation-type power generation Exciting Windings for Transverse Differential Protection, carbon brush, slip ring structure,
Complete machine structure is simple, avoids Exciting Windings for Transverse Differential Protection and failures, the reliability such as easily burns, breaks and greatly improves.The use of permanent-magnet structure, makes
Power generation part internal structure design arrangement it is very compact, volume, weight are greatly reduced.Wireless string is also integrated in the cylinder
Mouth mold block, sensor are connected by RS232 with wireless serial module, and the combination of self power generation and wireless module has dispensed sensing
All cables on device so that sensor installation and using when be not required to consider wire cable layout, multichannel communication is simpler just
It is prompt.Simultaneously as sensor does not have any cable, be not in circuit damage failure in use, equipment dependability obtains
Great raising.
New sensors will solve the problems, such as sensor power supply and multi-channel data transmission, the institute being included within including power cord
There is cable to eliminate, accomplishes integrally to be wirelessly connected between sensor and host computer；It can be quickly from tested using new mechanical structure
It is quickly disassembled on axis axis body, cost is lower when maintenance, more convenient.
Description of the drawings
Fig. 1 is sensors sides schematic diagram；
Fig. 1 a are left view；Fig. 1 b are lateral side view；Fig. 1 c are the sectional view along A-A of Fig. 1 a；Fig. 1 d be Fig. 1 b J-J to
Sectional view.
Fig. 2 is sensor explosive view；
Fig. 2 a are left view；Fig. 2 b are the sectional view along A-A of Fig. 2 a；Fig. 2 c are front side schematic diagram.
Fig. 3 is that torque axis is driven schematic diagram.
Fig. 4 is changable driving structural schematic diagram.
Specific implementation mode
To make the object, technical solutions and advantages of the present invention clearer, the technical solution below in the present invention carries out clear
Chu is fully described by, it is clear that described embodiments are some of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other without creative efforts
Embodiment shall fall within the protection scope of the present invention.
The following further describes the present invention with reference to the drawings.
In order the torque of shaft to be changed into, adaptability to changes or displacement etc. are other to be facilitated the operation principle of torque sensor
The data measured, and then measure and obtain the torque value of shaft.Sensor itself is a hollow cylinder shape mounting platform, circle
Cylinder can be split as two halves circular ring shape, and sensor can be then attached to by screw combination on torque axis.Microcontroller, signal
It sends and the electronic sections such as power supply voltage stabilizing is all made of bayonet and fixes on a sensor, when the sensor fails, can pass through
Screw release is taken down sensor from torque axis, then individual inspiration or replacement torque axis and torque sensor, do not need
Overall pulling down.
It is transmission shaft that existing sensor, which does not have detachable structure, sensor,.Contactless self power generation torque sensor
Generally a cylinder barrel shaped shell, cylinder barrel shaped shell are screwed on torque axis, are carried to measure part and circuit
For mounting platform.Disassembled cylinder barrel shaped shell is two halves, can directly be dismantled from torque axis when sensor needs to safeguard.
Torque sensor needs power supply power supply, existing sensor to be required to external power supply power supply at runtime.It is non-contact
Formula self power generation torque sensor is brushless electricity generator structure, itself can be that all circuits supply power supply when sensor operation.
The data detected are sent on host computer by torque sensor needs.Existing sensor mostly use cable or
Wireless square wave pattern is sent in host computer carries out data decoding again, and contactless self power generation torque sensor directly passes through
RS232 is connected with wireless serial, and wireless serial directly transmits data to host computer, data channel bandwidth bigger.
Sensor integrally has detachable structure, can be directly anchored on torque axis axis body after dismounting, measure torque indirectly
The torque value of axis.Sensor has self power generation and wireless data transmission function, and sensor does not need any cable connection with the external world,
It uses and is not required to consider wiring problem when installing.Itself it is brushless electricity generator structure, self-generating when operating, the alternating current sent out
By becoming low voltage and direct current after transformer pressure-reducing, rectifier bridge rectification.Multipath voltage regulation power supply is carried in sensor hardware circuit,
Respectively wireless data transmission and data processing chip power supply, electricity-generating circuit is incorporated into decompression, rectification circuit in a circuit,
Collecting ring or wireless power transmission circuit are not needed, has accomplished real wireless measurement.High-performance wireless serial port module, data transmission speed
Degree is fast, and communication band is roomy, and not needing interconnecting device can be with host computer direct communication.Because sensor does not have any cable,
Be not in circuit damage failure during use, equipment dependability is greatly improved.
Conventional torque sensor itself and torque axis axis body are integral structures, when sensor needs maintenance or torque axis axis
After body damage, entire sensor is required for replacing, and cost is very high.For solve conventional torque sensor it is cumbersome for installation, safeguard at
This high problem, this sensor are formed by connecting detachable structure using as shown in Figure 1 by two semicircular structures, and Fig. 1 a are a left side
View；Fig. 1 b are lateral side view；Fig. 1 c are the sectional view along A-A of Fig. 1 a；Fig. 1 d are the J-J of Fig. 1 b to sectional view.Sensor is pacified
It only needs to be fixed on universal shaft axis body by screw tightening after docking two semicircles on universal shaft axis body when dress.
When the later stage replaces shaft or sensor and breaks down, sensor housing can very easily and turn new-type torque sensor
Axis axis body is detached, and can be individually replaced shaft axis body or is individually replaced torque sensor, greatly reduce sensor
The time of maintenance and cost.
Conventional torque sensor measures the deformation quantity of elastic shaft by foil gauge, reflects indirectly suffered by axis body
The torque arrived.Because foil gauge is pasted on elastic shaft by binder, when elastic shaft damage or foil gauge
After damage, entire sensor is required for replacing, and can not carry out repair and replacement to part, this integral structure results in traditional torsion
The maintenance of square sensor and maintenance cost are especially high.In order to reduce maintenance difficulties and maintenance cost, contactless self-generating wireless
Torque sensor detaches sensor with elastic shaft.When transmission shaft is acted on by torque, axis body will produce deformation.
As shown in figure 3, transmission shaft is analogized to a cylinder, after transmission shaft is acted on by torque, transmission shaft will be sent out
Raw deformation takes transmission shaft front end and is driven the cross section of shaft rear end, after torque axis receives torque effect, can be produced between cross section
Raw corner.Because elastic shaft needs, which multiply, carries very big torque, the cross section corner generated is not too large.Want to detect
So small angle, needs deformation quantity being amplified.Relative rotation on cross section is identical as axis body direction of rotation, and transversal
The deformation quantity in face is in the tangent plane of cross section.When axis body is laterally disposed, Displacement-deformation amount is just in a longitudinal direction.According to stone
The lateral length of shaft actual size in oily drilling well, shaft is less than 160mm, is not easy to the installation of sensor.So wanting to survey
The cross section relative shift for measuring axis body, first has to turn to displacement.
As shown in figure 4, a steering bearing is placed in the front for amplifying axis in no-load voltage ratio, so that it may with by longitudinal axis body deformation quantity
It redirect in transverse direction.Faint deformation quantity is by no-load voltage ratio amplification axis amplification, and displacement is surveyed by the sensor of rear end after amplification
Amount.The displacement sensor ranging from 0-5mm that this sensor rear end uses, according to measuring the deformation quantity of shaft within 2mm,
No-load voltage ratio amplification axis is accomplished 1 for convenience of measuring：2 amplification outputs, the shift value after amplification output is using differential transformer type position
Displacement sensor is detected, and corresponding torque value is converted to after microcontroller processing.Amplify axis in axis body and no-load voltage ratio amplification axis, no-load voltage ratio
Using high rigidity, high efficiency, lightweight, the accurate rope drive returned without friction, low latitude between sensor front end.It is high-precision to reach
The deformation quantity of degree is driven, and suitable pretightning force has been previously applied to cord, on the one hand the presence of pretightning force can eliminate steel wire rope
The stress generated by elastic elongation is elastic, on the other hand can improve the transmission stiffness and transmission accuracy of system.Sensor will
The value of thrust applied on shackle line is set in advance in sensor reversal interlocking relay in the size of counteracting, is reduced as far as possible
Tension variation caused by steel cable sliding in transmission process reduces the backlash characteristic in transmission process.
There is deformation quantity amplification and processing unit, final amplified torque axis deformation quantity to pass through silk inside torque sensor
To differential transformer displacement transducer, displacement sensor is reconverted into analog signal for rope drive, and microcontroller is filtered it
And AD conversion is corresponding torque value.
Conventional torque sensor cannot accomplish that fully wireless main reason is that sensor powerup issue can not be solved.
Existing frequency modulation transmitter formula torque sensor, although having accomplished to measure wireless between axis and sensor housing, sensing
There is still a need for connection power cord and data line, the presence of cable, and sensor to be made to need to consider wire cable layout when mounted for device shell,
Cable is easily damaged and leads to faulty sensor sensor when in use simultaneously.Contactless self-generating wireless torque sensor itself
Structure is similar to brushless generator, and sensor assembly explosive view is as shown in Fig. 2, Fig. 2 a are left view；Fig. 2 b are the A-A of Fig. 2 a
To sectional view；Fig. 2 c are front side schematic diagram；Entirety is made of three parts, respectively shell 1, bearing 2, coil 3, inner casing 4.Hair
Electric part uses magneto structure, and as shown in Figure 2 a, power coil is fixed on sensor inner casing 4, and shaft drives at work
Sensor rotates synchronously.When shaft rotates, coil is to maintain opposing stationary with shaft.Sensor outermost layer there are one shell 1,
Shell 1 not only acts as protective effect, and shell 1 is also inlaid with rare-earth Nd-Fe-B strong magnet and provides magnetic induction line for power coil.Shell
Fixed by hawser and extraneous frame, when shaft rotate, shell with extraneous with respect to remains stationary, the power coil phase in shaft
Shell is rotated, the induced electromotive force that coil cutting magnetic induction line generates directly is used for back-end circuit.
Finally it should be noted that：The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
Present invention has been described in detail with reference to the aforementioned embodiments, it will be understood by those of ordinary skill in the art that：It still may be used
With technical scheme described in the above embodiments is modified or equivalent replacement of some of the technical features；
And these modifications or replacements, various embodiments of the present invention technical solution that it does not separate the essence of the corresponding technical solution spirit and
Range.
Claims (4)
1. a kind of contactless self-generating wireless torque sensor, it is characterised in that：Sensor generally cylindrical structure, cylinder
Body is made of two semicircular rings being fixed by screw, and sensor after screw combination by being fixed on torque axis, sensor institute
There is component to be installed in two semicircular rings, cylindrical structure is whole by shell (1), bearing (2), coil (3) and inner casing (4)
Composition, two semicircular rings are screwed on torque axis, and inner casing (4) is fixed with torque axis, and shell (1) is installed by bearing
It can be rotated relative to inner casing (4) on inner casing (4), coil (3) is fixed on inner casing (4), inlays permanent magnetism on shell (1) inner surface
Body, coil (3) and permanent magnet form brushless electricity generator structure, supply power supply for all components when sensor operation；The circle
Wireless serial module is also integrated in cylinder, sensor is connected by RS232 with wireless serial module, the institute that sensor detects
There are data to be sent to host computer by wireless mode；
Torque axis amplifies axis with no-load voltage ratio by steering bearing and is connected, and the axis body deformation quantity of torque axis longitudinal direction is redirect in transverse direction,
Faint deformation quantity is by no-load voltage ratio amplification axis amplification, and displacement is measured by the sensor of rear end after amplification；
There is inside torque sensor deformation quantity amplification and processing unit, amplified torque axis deformation quantity by cord be driven to
Differential transformer displacement transducer, displacement sensor are reconverted into analog signal, and microcontroller is filtered to it and AD conversion
For corresponding torque value.
2. contactless self-generating wireless torque sensor according to claim 1, it is characterised in that：The permanent magnet is
Neodymium iron boron strong magnet.
3. contactless self-generating wireless torque sensor according to claim 1, it is characterised in that：In the cylinder
It is additionally provided with transformer, rectifier bridge and multipath voltage regulation module, the alternating current that brushless generator is sent out becomes low by decompression, rectification
Voltage dc, then by multipath voltage regulation power supply be respectively that all components are powered.
4. contactless self-generating wireless torque sensor according to claim 1, it is characterised in that：The component is equal
It is fixed in two semicircular rings using bayonet.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510801588.5A CN105424244B (en) | 2015-11-19 | 2015-11-19 | A kind of contactless self-generating wireless torque sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510801588.5A CN105424244B (en) | 2015-11-19 | 2015-11-19 | A kind of contactless self-generating wireless torque sensor |
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| Publication Number | Publication Date |
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| CN105424244A CN105424244A (en) | 2016-03-23 |
| CN105424244B true CN105424244B (en) | 2018-10-16 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105973512B (en) * | 2016-06-22 | 2018-09-04 | 大连理工大学 | A kind of self-generating wireless transmission piezoelectric type torque dynamometer |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4680976A (en) * | 1985-11-15 | 1987-07-21 | Vibro-Meter Sa | Torque or angle of torsion measuring device |
| CN2398633Y (en) * | 1998-11-02 | 2000-09-27 | 张福刚 | Radio torque rotating speed measuring instrument |
| CN2793709Y (en) * | 2005-03-19 | 2006-07-05 | 荆州市沙市科隆仪表研究所 | Coupled torsional sensor |
| CN101826778A (en) * | 2010-05-25 | 2010-09-08 | 上海应用技术学院 | Electric motor with torque sensor |
| CN101865275A (en) * | 2010-05-28 | 2010-10-20 | 上海应用技术学院 | Torque sensor combined with reducer |
| CN203837849U (en) * | 2014-04-04 | 2014-09-17 | 董华玉 | Improved device for measuring boat propulsion shaft system based on clamp ring type torque sensor |
| CN104655342A (en) * | 2015-01-15 | 2015-05-27 | 南京林业大学 | Self-power supply and wireless data transmission-based mechanical seal face friction torque measurement device |
| CN205120289U (en) * | 2015-11-19 | 2016-03-30 | 青岛理工大学 | Non -contact is from generating electricity wireless torque sensor |
-
2015
- 2015-11-19 CN CN201510801588.5A patent/CN105424244B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4680976A (en) * | 1985-11-15 | 1987-07-21 | Vibro-Meter Sa | Torque or angle of torsion measuring device |
| CN2398633Y (en) * | 1998-11-02 | 2000-09-27 | 张福刚 | Radio torque rotating speed measuring instrument |
| CN2793709Y (en) * | 2005-03-19 | 2006-07-05 | 荆州市沙市科隆仪表研究所 | Coupled torsional sensor |
| CN101826778A (en) * | 2010-05-25 | 2010-09-08 | 上海应用技术学院 | Electric motor with torque sensor |
| CN101865275A (en) * | 2010-05-28 | 2010-10-20 | 上海应用技术学院 | Torque sensor combined with reducer |
| CN203837849U (en) * | 2014-04-04 | 2014-09-17 | 董华玉 | Improved device for measuring boat propulsion shaft system based on clamp ring type torque sensor |
| CN104655342A (en) * | 2015-01-15 | 2015-05-27 | 南京林业大学 | Self-power supply and wireless data transmission-based mechanical seal face friction torque measurement device |
| CN205120289U (en) * | 2015-11-19 | 2016-03-30 | 青岛理工大学 | Non -contact is from generating electricity wireless torque sensor |
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