CN204214571U - For the passive and wireless temperature monitoring collar of metal bearing - Google Patents
For the passive and wireless temperature monitoring collar of metal bearing Download PDFInfo
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- CN204214571U CN204214571U CN201420683061.8U CN201420683061U CN204214571U CN 204214571 U CN204214571 U CN 204214571U CN 201420683061 U CN201420683061 U CN 201420683061U CN 204214571 U CN204214571 U CN 204214571U
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- metal
- collar
- acoustic wave
- surface acoustic
- passive
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- 239000002184 metal Substances 0.000 title claims abstract description 53
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 53
- 238000012544 monitoring process Methods 0.000 title claims abstract description 17
- 238000010897 surface acoustic wave method Methods 0.000 claims abstract description 20
- 239000000463 material Substances 0.000 claims abstract description 5
- 238000001514 detection method Methods 0.000 claims description 4
- 229940123361 Quorum sensing inhibitor Drugs 0.000 abstract description 2
- 239000010410 layer Substances 0.000 description 20
- 230000005855 radiation Effects 0.000 description 5
- 238000009434 installation Methods 0.000 description 4
- 230000003068 static effect Effects 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000009529 body temperature measurement Methods 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000005415 magnetization Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 230000002463 transducing effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- Arrangements For Transmission Of Measured Signals (AREA)
Abstract
For the passive and wireless temperature monitoring collar of metal shaft, it is characterized in that: the collar be divided into concentric outer, in, interior three layers, skin is semi-circular or spirality metal, internal layer is cylindrical metal, and middle layer is the insulating supporting material comprising the temperature sensitive resonator of surface acoustic wave, impedance matching inductance capacitance; One termination inner layer metal cylinder of the temperature sensitive resonator of surface acoustic wave, the other end connects outer layer metal centre position by impedance matching inductance capacitance; The aperture of inner layer metal matches with the metal shaft that will install, and outer layer metal is wireless signal radiating layer, and its external diameter and girth are determined according to frequency of operation.The advantages such as this lantern ring type temperature monitoring has that applicable metal bearing is installed, completely passive (just can work without the need to battery), quorum sensing inhibitor are good, simple and reliable.
Description
Technical field
The utility model relates to wireless senser field, particularly relates to the wireless senser of special applications.
Background technology
The application of wireless senser in security monitoring, automatic management etc. is more and more extensive.But some particular component is due to the singularity of itself, very high requirement is proposed to the shape of sensor, volume and working method.Such as, owing to often wanting switching action, there is loose contact, contact be oxidized the too high phenomenon of temperature caused, be necessary that mounting temperature sensor is monitored in the dynamic and static contact of power switch cabinet.If the rotating shaft of train or lathe, transmission shaft because friction cause temperature too high, greatly can reduce serviceable life, even cause security incident, carrying out temperature monitoring to these bearings just can Timeliness coverage hidden danger, generation of preventing accident.These metal bearings are generally in the inside of equipment, and sight line is blocked and quantity is many, are difficult to realize by infrared measurement of temperature mode.And due to the reason such as high voltage, rotation, infeasible by temperature-sensitive galvanic couple, optical fiber temperature-measurement mode, therefore wireless monitor is optimal selection.
To the wireless temperature monitoring of metal bearing, its difficult point is in the following aspects:
One is that metal parts is very large for the impact of wireless signal.Such as in radio-frequency (RF) identification (RFID) field, anti-metal tag is a difficult point and study hotspot always.This is because metal is as good conductor, the tangential electric field on its surface is zero, and this can have a strong impact on the work of the antenna of metal surface, causes wireless reading distance closely even can not read out.
Two is that metal pair electromagnetic wave has and well blocks effect, if sensor is arranged on the side of metal shaft, blocking so due to metal shaft, can cause the shadow region of wireless signal, may not receive transducing signal at opposite side.
Three is very high to installation and maintenance requirement.The monitor be arranged on axle can not be given prominence to too much, can not introduce other hidden danger, in order to avoid affect equipment work because of installation.Safeguard and also require conveniently.
Summary of the invention
For the thermometric demand of these metal bearing parts such as dynamic/static contact, train axle, mechanical drive shaft of power switch cabinet, the utility model proposes a kind of temperature monitoring collar of passive and wireless.The advantages such as this collar has that applicable metal bearing is installed, completely passive (just can work without the need to battery), quorum sensing inhibitor are good, simple and reliable.
The collar of the present utility model, it is characterized in that: the collar be divided into concentric outer, in, interior three layers, skin is semi-circular or spirality metal, and internal layer is cylindrical metal, and middle layer is the insulating supporting material comprising the temperature sensitive resonator of surface acoustic wave, impedance matching inductance capacitance; One termination inner layer metal cylinder of the temperature sensitive resonator of surface acoustic wave, the other end connects outer layer metal centre position by impedance matching inductance capacitance; The aperture of inner layer metal matches with the metal shaft that will install, and outer layer metal is wireless signal radiating layer, and its external diameter and girth are determined according to frequency of operation.
In order to protect outer layer metal, one deck insulating protective layer can be added outside outer layer metal layer.The metal cylinder of internal layer plays the effect with reference to ground, also can be substituted by installed metal shaft and omit.
The collar of the present utility model, the metal of its ectonexine forms an antenna, under rational size design, can effectively receive and launch the wireless signal of the temperature sensitive resonator of surface acoustic wave, thus realizes the communication with external detection device.According to emulation and test findings, the radiation direction of this thimble structure perpendicular to collar axle center, and is uniform in all directions substantially.This illustrates when the collar rotates along with metal shaft, and the transmitting-receiving of wireless signal is impregnable, thus ensure that Signal transmissions is good,
The temperature sensitive resonator of surface acoustic wave is the temperature variant passive device of a kind of natural resonance signal, and its thickness can be some more at 1mm, the several millimeter of length and width.Can there is resonance in it, and after external drive is cancelled, discharge the electromagnetic signal of certain frequency under the electric magnetization signal of outside.Just temperature can be detected according to the signal frequency of its release and the relation of temperature.Because its work capacity comes from external drive, therefore do not need powered battery, thus greatly save volume, contribute to realizing miniaturization, decrease the impact on equipment as far as possible.
The collar of the present utility model is a passive wireless temperature sensor in itself, but solves the wireless temperature test problems of metal shaft due to its special design, has the advantages such as volume is little, signal does not affect by metal shaft rotation, installation and maintenance aspect.Especially the thermometric of the objects such as power switch cabinet dynamic/static contact, train axle, lathe rotating shaft is applicable to.
Change temperature sensitive for surface acoustic wave resonator into SAW (Surface Acoustic Wave) resonator with quality loading blocks, just form passive and wireless vibration or the angular velocity monitoring collar.Thus as required, basis of the present utility model realizes the detection beyond temperature.
If space allows, the temperature sensitive resonator of surface acoustic wave can change active wireless temperature or vibration detection circuit and battery into, thus forms active temperature or the vibration monitoring collar.Active advantage is that monitoring distance is far away.
Hereafter will be further described the utility model with embodiment by reference to the accompanying drawings.
Accompanying drawing explanation
Fig. 1 is the axial arrangement schematic diagram of passive and wireless temperature monitoring collar specific embodiment.
Fig. 2 is the vertical view of Fig. 1 collar.
Reference numeral: 1, cylindrical metallic layer; 2, outer radiation metal layer; 3, insulating supporting; 4, the temperature sensitive resonator of surface acoustic wave; 5, impedance matching circuit; 6, through hole; 7, shell.
Embodiment
Fig. 1 is the axial arrangement schematic diagram of passive and wireless temperature monitoring collar specific embodiment.Frequency of operation is 900MHz, and cylindrical metallic layer (1) is copper material, interior through 35mm.Insulating supporting (3) is a circular circuit board, and sheet material is RF4, specific inductive capacity 4.3.The circular circuit board top welding temperature sensitive resonator of surface acoustic wave (4) and match circuit (5), resonator dimensions is 5mm*5mm*12mm, and coupling inductance capacitor element has 3, is 0603 encapsulation.Circuit board overall diameter 75mm, outer field radiation metal layer is copper semi-circular, and girth is about half-wavelength.In order to correctly reflect the temperature of metal shaft, the shell of the temperature sensitive resonator of surface acoustic wave (4) and an end are closely connected with cylindrical metallic layer (1).Impedance matching circuit (5) one end connects one end of the temperature sensitive resonator of surface acoustic wave (4), and the other end connects outer layer metal.Insulation crust (7) provides protection for the whole collar.
By HFSS software, simulation calculation is carried out to thimble structure, especially outer layer metal girth is optimized, this structure can be made to have very high radiation characteristic to 900MHz frequency, and in all directions perpendicular to axial direction, radiation is substantially equal, is that is omnidirectional at the antenna pattern of vertical axial.The rotation along with sleeve can be ensured like this, the reception of signal and launch unaffected.
If the overall diameter of the collar is subject to installation dimension restriction, then can reduce overall diameter, diameter as requested again simulation calculation obtains suitable outer layer metal size.In a word, for certain frequency of operation, the size of the collar is not unique, but determines as required.
Although made explanation in conjunction with above-mentioned example embodiment to the utility model, obviously: those skilled in the art still can make replacement, amendment and distortion by the parts used to it.Therefore exemplary enforcement of the present utility model and distortion thereof and amendment still fall in the protection domain that is defined by the appended claims.
Claims (4)
1. for the passive and wireless temperature monitoring collar of metal shaft, it is characterized in that: the collar be divided into concentric outer, in, interior three layers, skin is semi-circular or spirality metal, internal layer is cylindrical metal, and middle layer is the insulating supporting material comprising the temperature sensitive resonator of surface acoustic wave, impedance matching inductance capacitance; One termination inner layer metal cylinder of the temperature sensitive resonator of surface acoustic wave, the other end connects outer layer metal centre position by impedance matching inductance capacitance; The aperture of inner layer metal matches with the metal shaft that will install, and outer layer metal is wireless signal radiating layer, and its external diameter and girth are determined according to frequency of operation.
2. the passive and wireless temperature monitoring collar according to claim 1, is characterized in that: inner layer cylinder shape metal is substituted by installed metal shaft and omits.
3. the collar according to claim 1, is characterized in that: change temperature sensitive for surface acoustic wave resonator into SAW (Surface Acoustic Wave) resonator with quality loading blocks, forms passive and wireless vibration or the angular velocity monitoring collar.
4. the collar according to claim 1, is characterized in that: temperature sensitive for surface acoustic wave resonator can be changed into active wireless temperature or vibration detection circuit and battery, form active temperature or the vibration monitoring collar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420683061.8U CN204214571U (en) | 2014-11-17 | 2014-11-17 | For the passive and wireless temperature monitoring collar of metal bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420683061.8U CN204214571U (en) | 2014-11-17 | 2014-11-17 | For the passive and wireless temperature monitoring collar of metal bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204214571U true CN204214571U (en) | 2015-03-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420683061.8U Active CN204214571U (en) | 2014-11-17 | 2014-11-17 | For the passive and wireless temperature monitoring collar of metal bearing |
Country Status (1)
| Country | Link |
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| CN (1) | CN204214571U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109708774A (en) * | 2019-01-24 | 2019-05-03 | 上海置信电气股份有限公司 | A kind of passive wireless temperature sensor of gasket construction |
-
2014
- 2014-11-17 CN CN201420683061.8U patent/CN204214571U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109708774A (en) * | 2019-01-24 | 2019-05-03 | 上海置信电气股份有限公司 | A kind of passive wireless temperature sensor of gasket construction |
| CN109708774B (en) * | 2019-01-24 | 2024-03-01 | 上海置信智能电气有限公司 | Passive wireless temperature sensor with gasket structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20151231 Address after: Jiangsu province Nantong City Road 226000, No. 58, building 3, 806 Patentee after: Salisense Technology Co., Ltd. Address before: 100048 Beijing city Haidian District Fucheng Road 6 hospital No. 5 Building 5 unit 502 Patentee before: Wang Dongfang |