CN205120289U - Non -contact is from generating electricity wireless torque sensor - Google Patents
Non -contact is from generating electricity wireless torque sensor Download PDFInfo
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- CN205120289U CN205120289U CN201520926676.3U CN201520926676U CN205120289U CN 205120289 U CN205120289 U CN 205120289U CN 201520926676 U CN201520926676 U CN 201520926676U CN 205120289 U CN205120289 U CN 205120289U
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Abstract
The utility model provides a non -contact is from generating electricity wireless torque sensor, the whole detachable construction that is of sensor, half the ring structure from two intermeshing as linking to each other with the torque axis through the screw, the sensor possesses from electricity generation and wireless data transmission function, the sensor does not need any cable junction with the external world, use and need not consider routing problems when installing, from as the brushless generator structure, generate electricity by oneself during the operation, for wireless data transmission and data processing chip power supply, real wireless measurement has been accomplished, the wireless serial module of high performance, data transmission bauds is fast, the communication bandwidth is big, do not need switching equipment alright with the host computer direct communication because the sensor does not have any cable, the circuit can not appear and damage the trouble in the use, the equipment reliability has obtained very big improvement.
Description
Technical field
The present invention relates to technical field of automation, relate to a kind of torque-measuring apparatus, particularly the contactless self-generating wireless torque sensor of one.
Background technology
Different according to the transfer mode of signal, the energy, dynamic torque sensor can be divided into collecting ring type and frequency modulation transmitter formula two kind.
Collecting ring type torque sensor relies on 4-16 even more groups of fine silver or platinum collector ring and carbon brush transmission of signal, the existence of collector ring makes rotating shaft can not bear very high rotating speed, even if adopt air cooling-down or liquid cooling, carbon brush still can wear and tear gradually, and signal noise can increase along with use.And along with the increase of number of vias, slip ring length can lengthen gradually, and fricative dust is easily piled up, cause withstand voltage deficiency between adjacent ring, produce interference between signal, collecting ring type is also not suitable for long-time and multi-channel data communication.
Frequency modulation transmitter formula torque sensor relies on radiofrequency signal transmission of signal and the energy to the elastic shaft rotated, although eliminate the easy damage devices such as collector ring, still needs to rely on data line to carry out data transmission between sensor and host computer.Along with the increase of data channel, the quantity of the communications cable also can increase, and increases installation difficulty.Simultaneously when carrying out deep drilling exploration or site environment is complicated, the data line of torque sensor and power lead are very easily intertwined or cause circuit breakage to cause dropout because wearing and tearing.
Existing two kinds of sensors above, only accomplished that the wireless data between elastic shaft and sensor housing exchanges, sensor entirety still needs power supply or connection data cable, does not solve the wireless issue of sensor from root.Existing torque sensor all adopts the structure of detecting portion and elastic shaft rigid connection simultaneously, and damaging when any part of sensor all needs integral demounting to safeguard.Foil gauge and elastic shaft are directly pasted together by the frequency modulation transmitter formula torque sensor especially generally adopted now, and when elastic shaft damages, foil gauge is scrapped thereupon and cannot be continued to use, and causes great waste.
Summary of the invention
In order to overcome above-mentioned the deficiencies in the prior art, the invention provides a kind of contactless self-generating wireless torque sensor, overall wireless connections between sensor and host computer, solving existing sensor power and multi-channel data transmission problem.
The technical solution adopted in the present invention is:
A kind of contactless self-generating wireless torque sensor, sensor entirety is cylindrical structure, right cylinder is made up of two semicircular ring be fixed by screw, sensor is by being fixed on torque axis after screw combination, the all components and parts of sensor are installed in two semicircular ring, cylindrical structure is overall by shell, bearing, coil and inner casing composition, two semicircular ring are screwed on torque axis, inner casing and torque axis are fixed, shell is arranged on inner casing can be rotated relative to inner casing by bearing, coil is fixed on inner casing, mosaic magnet on inner surface of outer cover, coil and permanent magnet form brushless electricity generator structure, be all components and parts supply powers during sensor operation, also be integrated with wireless serial module in described right cylinder, sensor is connected with wireless serial module by RS232, and all data that sensor detects all are sent to host computer by wireless mode.
Further, described permanent magnet is neodymium iron boron strong magnet.
Further, be also provided with transformer, rectifier bridge and multipath voltage regulation module in described right cylinder, the alternating current that brushless generator sends becomes low voltage and direct current by step-down, rectification, then is respectively all components and parts by multipath voltage regulation power supply and powers.
Further, described components and parts all adopt bayonet socket to be fixed in two semicircular ring.
Compared with prior art, the invention has the beneficial effects as follows:
Right cylinder is made up of two semicircular ring be fixed by screw, sensor is by being fixed on torque axis after screw combination, demountable structure greatly reduces maintenance time and the cost of torque sensor, coil and permanent magnet form brushless electricity generator structure, be all components and parts supply powers during sensor operation, the wireless penetration completely that the employing of automatic generating structure makes torque sensor accomplish.Power generation part adopts magneto structure, eliminates field copper, carbon brush, the slip ring structure of excitation-type generating, and complete machine structure is simple, and avoid the faults such as field copper is easily burnt, broken string, reliability greatly improves.The employing of permanent-magnet structure, power generation part internal structure design is arranged very compact, volume, weight greatly reduce.Wireless serial module is also integrated with in described right cylinder, sensor is connected with wireless serial module by RS232, the combination of self power generation and wireless module, the all cables on sensor are dispensed, make sensor not need when installing and use to consider wire cable layout, multichannel communication is more simple and convenient.Simultaneously because sensor without any cable, in use there will not be circuit to damage fault, equipment dependability is greatly improved.
New sensors will solve sensor power and multi-channel data transmission problem, eliminate, accomplishing overall wireless connections between sensor and host computer by being included in power lead at interior all cables; Adopt new mechanical structure to get off from quick-detachment measured axis axis body fast, during maintenance, cost is lower, more convenient.
Accompanying drawing explanation
Fig. 1 is sensors sides schematic diagram;
Fig. 1 a is left view; Fig. 1 b is lateral side view; Fig. 1 c is that the A-A of Fig. 1 a is to cut-open view; Fig. 1 d is that the J-J of Fig. 1 b is to cut-open view.
Fig. 2 is sensor explosive view;
Fig. 2 a is left view; Fig. 2 b is that the A-A of Fig. 2 a is to cut-open view; Fig. 2 c is front side schematic diagram.
Fig. 3 is torque axis transmission schematic diagram.
Fig. 4 is changable driving structural representation.
Embodiment
For making the object, technical solutions and advantages of the present invention clearly, below technical scheme in the present invention be clearly and completely described, obviously, described embodiment is the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Below in conjunction with accompanying drawing, the present invention is further described.
The principle of work of torque sensor is the torque axis of rotating shaft is become other data that can conveniently record such as adaptability to changes or displacement, and then measures the torque value obtaining rotating shaft.Sensor self is a hollow cylinder shape mounting platform, and right cylinder can be split as two semicircular annular, and then sensor can be fixed on torque axis by screw combination.The electronic sections such as the transmission of single-chip microcomputer, signal and power supply voltage stabilizing all adopt bayonet socket fixing on a sensor, when the sensor fails, by screw is unclamped, sensor can be taken down from torque axis, then individual inspiration or change torque axis and torque sensor, not need overall pulling down.
Existing sensor does not have demountable structure, and sensor is transmission shaft.Contactless self power generation torque sensor entirety is a cylinder barrel shaped shell, and cylinder barrel shaped shell is screwed on torque axis, for measure portion and circuit provide mounting platform.Cylinder barrel shaped shell is disassembled is two halves, can directly dismantle from torque axis when sensor needs to safeguard.
Torque sensor operationally needs Power supply, and existing sensor all needs external power supply to power.Contactless self power generation torque sensor is brushless electricity generator structure, during sensor operation, self can be all circuit supply powers.
Torque sensor needs the data detected to be sent on host computer.Existing sensor mostly adopts cable or wireless square wave pattern to be sent in host computer to carry out data decode again, and contactless self power generation torque sensor is directly connected with wireless serial by RS232, data are directly sent to host computer by wireless serial, and data channel bandwidth is larger.
Sensor entirety has demountable structure, can directly be fixed on torque axis axis body, the torque value of indirect inspection torque axis after dismounting.Sensor is for self power generation and wireless data transmission function, and sensor is connected without any need for cable with the external world, does not need to consider wiring problem when using and install.From as brushless electricity generator structure, self-generating during running, the alternating current sent is by becoming low voltage and direct current after transformer pressure-reducing, rectifier bridge rectification.With multipath voltage regulation power supply in sensor hardware circuit, be respectively Wireless Data Transmission and data processing chip is powered, electricity-generating circuit and step-down, rectification circuit are incorporated in a circuit, do not need collector ring or wireless power transmission circuit, have accomplished real wireless measurement.High-performance wireless serial port module, data rate is fast, and communication band is roomy, does not need interconnecting device just directly can communicate with host computer.Because sensor is without any cable, in use there will not be circuit to damage fault, equipment dependability is greatly improved.
Conventional torque sensor self and torque axis axis body are integrative-structures, and after sensor needs maintenance or torque axis axis body damages, whole sensor all needs to change, and cost is very high.Install the problem loaded down with trivial details, maintenance cost is high for solving conventional torque sensor, this sensor adopts to be formed by connecting demountable structure by two semicircular structures as shown in Figure 1, and Fig. 1 a is left view; Fig. 1 b is lateral side view; Fig. 1 c is that the A-A of Fig. 1 a is to cut-open view; Fig. 1 d is that the J-J of Fig. 1 b is to cut-open view.Sensor just can be fixed on universal shaft axis body by screw tightening after when installing only needing two semicircles to dock on universal shaft axis body.New-type torque sensor is when the later stage changes rotating shaft or sensor experiences failure, sensor housing can be separated with rotating shaft axis body very easily, rotating shaft axis body can be changed separately or change torque sensor separately, greatly reducing time and the cost of sensor maintenance.
Conventional torque sensor is measured by the deformation quantity of foil gauge to elastic shaft, indirectly reflects the torque suffered by axis body.Because foil gauge is pasted on elastic shaft by cementing agent, so after elastic shaft damages or foil gauge damages, whole sensor all needs to change, and cannot carry out repair and replacement to part, the maintenance cost that this integral structure result in conventional torque sensor is high especially.In order to reduce maintenance difficulties and maintenance cost, sensor is separated with elastic shaft by contactless self-generating wireless torque sensor.When transmission shaft is subject to torsional interaction, axis body can produce deformation.
As shown in Figure 3, transmission shaft is analogized to a right cylinder, after transmission shaft is subject to torsional interaction, will there is deformation in transmission shaft, get the xsect of transmission shaft front end and transmission shaft rear end, after torque axis receives torsional interaction, can produce corner between xsect.Because elastic shaft needs to take advantage of carry very large moment of torsion, the xsect corner produced is not too large.Want to detect so little angle, need deformation quantity to amplify.Relative rotation on xsect is identical with axis body sense of rotation, and the deformation quantity of xsect is on the section of xsect.When laterally being placed by axis body, Displacement-deformation amount just in a longitudinal direction.According to the rotating shaft physical size in petroleum drilling, the lateral length of rotating shaft is less than 160mm, is not easy to the installation of sensor.So want the xsect relative shift measuring axis body, first displacement to be turned to.
As shown in Figure 4, a steering bearing is placed in the front of amplifying axle in no-load voltage ratio, just the axis body deformation quantity of longitudinal direction can be redirect to transversely.Faint deformation quantity amplifies axle through no-load voltage ratio and amplifies, and after amplifying, displacement is measured by the sensor of rear end.The displacement sensor scope that this sensor rear end adopts is 0-5mm, according to recording the deformation quantity of rotating shaft within 2mm, for convenience of measurement, no-load voltage ratio is amplified axle and accomplish that 1:2 amplifies output, the shift value amplified after exporting detects through differential transformer displace￣ ment transducer again, is converted to corresponding torque value after single-chip microcomputer process.Amplify axle at axis body and no-load voltage ratio, no-load voltage ratio amplify to adopt between axle and sensor front end high rigidity, high-level efficiency, lightweight, without rubbing, the accurate rope drive of low backlash.For reaching high-precision deformation quantity transmission, be applied with suitable pretightning force in advance to silk rope, the existence of pretightning force can eliminate the stress degree of tightness that wire rope produces because of elastic elongation on the one hand, can improve transmission stiffness and the transmission accuracy of system on the other hand.The value of thrust that shackle line applies is set in advance in sensor reversal interlocking relay in the size offset by sensor, reduces the tension variation that in transmission process, steel cable sliding causes as much as possible, reduces the backlash characteristic in transmission process.
Torque sensor inside has deformation quantity and amplifies and treating apparatus, torque axis deformation quantity after final amplification passes through silk rope drive to differential transformer displace￣ ment transducer, displacement transducer is converted to simulating signal again, and single-chip microcomputer carries out filtering to it and AD conversion is corresponding torque value.
Conventional torque sensor can not accomplish that completely wireless main reason is to solve sensor power problem.Existing frequency modulation transmitter formula torque sensor, although that has accomplished to measure between axle and sensor housing is wireless, but sensor housing still needs connecting power line and data line, the existence of cable makes sensor need when mounted to consider wire cable layout, simultaneously sensor in use cable easily damage and cause faulty sensor.Contactless self-generating wireless torque sensor self structure is similar to brushless generator, and as shown in Figure 2, Fig. 2 a is left view to sensor assembly explosive view; Fig. 2 b is that the A-A of Fig. 2 a is to cut-open view; Fig. 2 c is front side schematic diagram; Entirety is made up of three parts, is respectively shell 1, bearing 2, coil 3, inner casing 4.Power generation part adopts magneto structure, and as shown in Figure 2 a, power coil is fixed on sensor inner casing 4, and dynamic sensor synchronous axial system is operationally with in rotating shaft.When rotating shaft rotates, coil and rotating shaft keep geo-stationary.Sensor outermost layer has a shell 1, and shell 1 not only plays a protective role, and shell 1 is also inlaid with rare-earth Nd-Fe-B strong magnet for power coil provides magnetic induction line.Shell is fixed by hawser and extraneous framework, and when rotating shaft rotates, shell is relative with the external world keeps static, and the power coil in rotating shaft rotates relative to shell, and the induction electromotive force that coil cutting magnetic induction line produces is directly for back-end circuit.
Last it is noted that above embodiment is only in order to illustrate technical scheme of the present invention, be not intended to limit; Although with reference to previous embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein portion of techniques feature; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (4)
1. a contactless self-generating wireless torque sensor, it is characterized in that: sensor entirety is cylindrical structure, right cylinder is made up of two semicircular ring be fixed by screw, sensor is by being fixed on torque axis after screw combination, the all components and parts of sensor are installed in two semicircular ring, cylindrical structure is overall by shell (1), bearing (2), coil (3) and inner casing (4) composition, two semicircular ring are screwed on torque axis, inner casing (4) and torque axis are fixed, shell (1) is arranged on inner casing (4) can be rotated relative to inner casing (4) by bearing, coil (3) is fixed on inner casing (4), mosaic magnet on shell (1) inside surface, coil (3) and permanent magnet form brushless electricity generator structure, be all components and parts supply powers during sensor operation, also be integrated with wireless serial module in described right cylinder, sensor is connected with wireless serial module by RS232, and all data that sensor detects all are sent to host computer by wireless mode.
2. contactless self-generating wireless torque sensor according to claim 1, is characterized in that: described permanent magnet is neodymium iron boron strong magnet.
3. contactless self-generating wireless torque sensor according to claim 1, it is characterized in that: in described right cylinder, be also provided with transformer, rectifier bridge and multipath voltage regulation module, the alternating current that brushless generator sends becomes low voltage and direct current by step-down, rectification, then is respectively all components and parts by multipath voltage regulation power supply and powers.
4. contactless self-generating wireless torque sensor according to claim 1, is characterized in that: described components and parts all adopt bayonet socket to be fixed in two semicircular ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520926676.3U CN205120289U (en) | 2015-11-19 | 2015-11-19 | Non -contact is from generating electricity wireless torque sensor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520926676.3U CN205120289U (en) | 2015-11-19 | 2015-11-19 | Non -contact is from generating electricity wireless torque sensor |
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| CN205120289U true CN205120289U (en) | 2016-03-30 |
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| CN201520926676.3U Expired - Fee Related CN205120289U (en) | 2015-11-19 | 2015-11-19 | Non -contact is from generating electricity wireless torque sensor |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105424244A (en) * | 2015-11-19 | 2016-03-23 | 青岛理工大学 | Non-contact self-generating wireless torque sensor |
| CN106124115A (en) * | 2016-07-27 | 2016-11-16 | 同济大学 | A kind of electromagnetic compensation formula three-dimensional moment sensor |
| CN106225964A (en) * | 2016-07-28 | 2016-12-14 | 中北大学 | The contactless torque test device that a kind of thin sheet of metal ring and bearing merge |
| CN106248272A (en) * | 2016-07-27 | 2016-12-21 | 同济大学 | A kind of take into account the method improving torque sensor range on the premise of sensitivity |
-
2015
- 2015-11-19 CN CN201520926676.3U patent/CN205120289U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105424244A (en) * | 2015-11-19 | 2016-03-23 | 青岛理工大学 | Non-contact self-generating wireless torque sensor |
| CN105424244B (en) * | 2015-11-19 | 2018-10-16 | 青岛理工大学 | A kind of contactless self-generating wireless torque sensor |
| CN106124115A (en) * | 2016-07-27 | 2016-11-16 | 同济大学 | A kind of electromagnetic compensation formula three-dimensional moment sensor |
| CN106248272A (en) * | 2016-07-27 | 2016-12-21 | 同济大学 | A kind of take into account the method improving torque sensor range on the premise of sensitivity |
| CN106225964A (en) * | 2016-07-28 | 2016-12-14 | 中北大学 | The contactless torque test device that a kind of thin sheet of metal ring and bearing merge |
| CN106225964B (en) * | 2016-07-28 | 2019-03-15 | 中北大学 | A kind of contactless torque test device that thin sheet of metal ring is merged with bearing |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160330 Termination date: 20161119 |
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| CF01 | Termination of patent right due to non-payment of annual fee |