CN111323114A - Wireless vibration sensor and system for isolating interference - Google Patents
Wireless vibration sensor and system for isolating interference Download PDFInfo
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- CN111323114A CN111323114A CN202010288213.4A CN202010288213A CN111323114A CN 111323114 A CN111323114 A CN 111323114A CN 202010288213 A CN202010288213 A CN 202010288213A CN 111323114 A CN111323114 A CN 111323114A
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- gland
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- wireless vibration
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- 210000004907 gland Anatomy 0.000 claims abstract description 48
- 238000002955 isolation Methods 0.000 claims abstract description 11
- 238000009413 insulation Methods 0.000 claims description 15
- 230000005540 biological transmission Effects 0.000 claims description 13
- 238000001914 filtration Methods 0.000 claims description 11
- 238000001514 detection method Methods 0.000 abstract description 8
- 239000000565 sealant Substances 0.000 abstract description 5
- 230000002349 favourable effect Effects 0.000 abstract description 2
- 238000012423 maintenance Methods 0.000 abstract description 2
- 239000002184 metal Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229920002492 poly(sulfone) Polymers 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H11/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by detecting changes in electric or magnetic properties
- G01H11/06—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by detecting changes in electric or magnetic properties by electric means
- G01H11/08—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by detecting changes in electric or magnetic properties by electric means using piezoelectric devices
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Abstract
The invention relates to the field of sensor structures, in particular to a wireless vibration sensor and a system for isolating interference, which can effectively fix a detection element in the sensor and keep the accuracy of detection. The utility model provides an keep apart wireless vibration sensor of interference, includes base, piezoelectric core and isolation component, the base is equipped with the cavity, isolation component includes insulating gland, the piezoelectric core sets up in the cavity to it is fixed through insulating gland, insulating gland is equipped with first walking the line hole. The insulating gland can fix the piezoelectric core in the base to the physical characteristic of mechanical type connection makes the fixed of piezoelectric core difficult not hard up because of the live time overlength, and the maintenance of being convenient for, compares the life-span longer with the pouring sealant mode, more is favorable to keeping the rate of accuracy that detects.
Description
Technical Field
The invention relates to the field of sensor structures, in particular to a wireless vibration sensor and a wireless vibration system for isolating interference.
Background
In the existing industrial field, a plurality of sensors are needed to collect the equipment state information (vibration temperature and the like), and the sensors are mostly in a wired structure. The sensor of wired mode needs external power supply more to signal propagation all needs to pass through the cable transmission, and when sensor node quantity is many, the wiring task can become complicated, and the wiring not only can influence whole equipment outward appearance and still can bring certain potential safety hazard, and the configuration operation that needs go on before the sensor uses, not only wastes time and energy but also complex operation.
The chinese utility model patent with patent number 201821884741.0 discloses a built-in type wireless vibration sensor of antenna can realize the collection of data through wireless transmission's mode, and the power supply of sensor adopts battery powered, has removed the use of cable from.
Although the scheme solves the problem of wireless monitoring of the vibration sensor, the fixing of the detection element in the sensor is realized in a pouring sealant mode, but the pouring sealant has poor physical properties, and the stability of the detection element cannot be maintained in a vibration environment for a long time, so that the detection accuracy is influenced.
Disclosure of Invention
In view of the above-mentioned shortcomings of the prior art, the present invention provides a wireless vibration sensor and system for isolating interference, which can effectively fix the detection element in the sensor and maintain the accuracy of detection.
The scheme provided by the invention is as follows:
the utility model provides an keep apart wireless vibration sensor of interference, includes base, piezoelectric core and isolation component, the base is equipped with the cavity, isolation component includes insulating gland, the piezoelectric core sets up in the cavity to it is fixed through insulating gland, insulating gland is equipped with first walking the line hole. The insulating gland can fix the piezoelectric core in the base to the physical characteristic of mechanical type connection makes the fixed of piezoelectric core difficult not hard up because of the live time overlength, and the maintenance of being convenient for, compares the life-span longer with the pouring sealant mode, more is favorable to keeping the rate of accuracy that detects. In general, in order to shield external electromagnetic interference, a metal material, such as stainless steel, is used for the housing of the sensor, but the metal housing carries electric charges, which affect the operation of the piezoelectric core, and therefore, the piezoelectric core needs to be insulated from the housing. The isolation components are made of insulating materials.
Preferably, the isolation assembly further comprises an insulating plate, and the insulating gland and the insulating plate are arranged on the upper side and the lower side of the piezoelectric core body and are in contact connection with the piezoelectric core body. The insulation board is matched with the insulation gland to fix the piezoelectric core body between the insulation board and the insulation gland, so that the insulation board is isolated from an external metal shell.
Preferably, the bottom of the insulating plate is connected with the base through a limiting boss, and the insulating plate and the base are relatively fixed. Spacing boss can be further fixed the insulation board, reduces the not hard up possibility of insulation board appearance, makes the piezoelectric core more firm. One of the bottom of the insulating plate and the base is provided with a boss, and the other is provided with a groove matched with the boss. The limiting boss can be a prism or a cylinder which is not concentric with the insulating plate, and generally, the limiting boss plays a role in limiting the rotation of the insulating plate, and the limiting boss can realize the function as long as the limiting boss is not a cylinder or a circular ring which is communicated with the insulating plate, and belongs to the concept of the invention.
Preferably, the piezoelectric cores are distributed along a ring shape, and the insulating gland is provided with a first wiring hole at the center of the corresponding ring shape. The first wiring hole is used for penetrating through a lead connected with the piezoelectric core body, is located at the center and cannot interfere with the lead when the insulating pressure rod is fixed.
Preferably, the insulating plate is provided with a blind hole with an upward opening, and a temperature sensor is arranged in the blind hole. The temperature sensor can be matched with and collect temperature parameters of a use environment, is integrated in the vibration sensor, is fixed on the insulating plate, and is compact in structure and free of extra occupied space.
Preferably, the insulating gland is provided with a second wiring hole. The second wiring hole is used for passing through a wire connected with the temperature sensor or the piezoelectric core body.
Preferably, the second wire holes are distributed in a surrounding manner along the circumferential direction, and the insulating gland is in threaded connection with the base. The form of threaded connection can guarantee that insulating gland can be fixed for a long time steadily, but the screw thread needs to rotate at the in-process of locking, and sensor itself is small, if sets up the instrument interface for the convenience of being connected of instrument and insulating gland, then can lead to the volume and the shape of insulating gland not compact small and exquisite enough. The second wiring holes are arranged, the second wiring holes can be used for passing through wires and can also be used as interfaces of tightening tools, and relevant tools (with plugs matched with the second wiring holes) are inserted into the second wiring holes to rotate.
Preferably, the second wire hole is a slotted hole. The long slotted hole can provide enough space for a tool and the lead, the lead cannot be squeezed after the tool is inserted, and the long slotted hole can provide larger moving space for the lead and cannot be tightened too much in the fixing process of the insulation gland.
Preferably, the insulating plate is connected with the base through an insulating nail. Insulating nail can be fixed the insulation board on vertical direction, further strengthens the stability of whole device.
Preferably, the base is provided with an opening at the top of the cavity, the insulating gland is arranged at the opening, the upper surface of the insulating gland is smaller than the height of the opening of the cavity, and the base forms an annular step around the insulating gland. The top of the insulating gland forms a concave structure relative to the top of the cavity, and when the sensor is assembled, components such as a battery bin and the like can be installed above the insulating gland. When the battery compartment is used for fixing the battery and applying pressure to the battery to fix the battery, the pressure is not directly transmitted to the insulating gland but transmitted to the base, so that the fixation of the piezoelectric core body is not influenced.
Preferably, the base is provided with a stringing hole. The stringing hole is used for setting up prevents losing the rope, when the sensor drops on equipment, prevents losing the rope and can prevent it and lose.
Preferably, still include battery, controller, filtering module, wireless transmission module, piezoelectric core, temperature sensor, controller, filtering module and wireless transmission module are connected to the battery, piezoelectric core, filtering module, controller and wireless transmission module connect gradually, temperature sensor connects the controller. The sensor can also comprise a battery bin and other components used for arranging a battery, a controller, a filtering module and a wireless transmission module, and the controller, the filtering module and the wireless transmission module can be integrated on a circuit board. The controller may be a single chip microcomputer.
The invention has the following beneficial effects:
1. compared with the prior art, the piezoelectric core body is fixed by adopting a mechanical structure, so that the phenomena of loosening of pouring sealant, cracking and the like due to vibration can be avoided even if the piezoelectric core body is used for a long time, the service life is prolonged, and the accuracy of detection is ensured;
2. the insulating gland is simple in structure, the inner space of the sensor is effectively saved, the production cost is reduced, the second wiring hole can provide a path for a lead to pass through, and meanwhile, the second wiring hole can also be used as an interface of tools such as a wrench and the like, so that the second wiring hole is convenient to assemble;
3. the insulation board is fixed with the base through spacing boss and insulating nail for the insulation board is more firm, has indirectly kept the stability of piezoelectricity core, simultaneously because insulation board self can accomplish completely fixed, consequently the insulation board produces not hard up trend and can not transmit for insulating gland, has alleviateed insulating gland's burden, makes insulating depression bar difficult not hard up more.
Drawings
In order to more clearly illustrate the embodiments or technical solutions in the prior art of the present invention, the drawings used in the description of the embodiments or prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.
FIG. 1 is a schematic view of the external structure of the present invention;
FIG. 2 is a schematic view of the internal structure of the present invention;
FIG. 3 is a control schematic of the present invention;
in the figure, 1-base, 2-piezoelectric core, 3-insulating gland, 4-insulating plate, 5-conducting wire, 11-cavity, 12-threading hole, 31-first wiring hole, 32-second wiring hole, 41-limiting boss, 42-temperature sensor and 43-insulating nail.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the drawings in the embodiment of the present invention, and it is obvious that the described embodiment is only a part of the embodiment of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1 to fig. 3, the present embodiment discloses a wireless vibration sensor for isolating interference, which includes a base 1, a piezoelectric core 2 and an isolation assembly, wherein the base 1 is provided with a cavity 11, the isolation assembly includes an insulating gland 3 and an insulating plate 4, and the piezoelectric core 2 is disposed in the cavity 11 and fixed by the insulating gland 3. The insulating gland 3 and the insulating plate 4 are arranged on the upper side and the lower side of the piezoelectric core body 2 to tightly press the piezoelectric core body 2.
The bottom of the insulating plate 4 is provided with a limiting boss 41, the base 1 is provided with a limiting groove matched with the base, and the insulating plate 4 and the base 1 are relatively fixed. The insulating plate 4 is provided with a blind hole with an upward opening, and a temperature sensor 42 is arranged in the blind hole. The insulating plate 4 is also connected with the base 1 by insulating nails 43. Base 1 is at 11 top openings in cavity, and insulating gland 3 sets up at the opening part, and the upper surface of insulating gland 3 is less than the height of 11 openings in cavity, and base 1 forms annular step around insulating gland 3. The insulating gland 3 is connected with the base 1 in a threaded mode.
The piezoelectric core body 2 is arranged in a ring shape, and the insulating gland 3 is provided with a first wiring hole 31 at the center corresponding to the ring shape. Insulating gland 3 still is equipped with second and walks line hole 32, and second walks line hole 32 and is a plurality of, encircles the distribution along the circumferencial direction, insulating gland 3 and base 1 threaded connection. The second wiring hole 32 is a long slot hole. The first wiring hole 31 is connected to the piezoelectric core 2 through a wire 5, and the second wiring hole 32 is connected to the temperature sensor 42 through a wire 5. The temperature sensor 42 adopts a PT10O core body, is packaged in an insulating plug, the insulating plug is in transition fit with the insulating plate 4, and heat-conducting silicone grease is coated at the matching position. The insulating plug and insulating nail 43 is preferably made of nylon, polysulfone rod or steel rod.
The base 1 is also provided with a stringing hole 12.
The battery is connected with the piezoelectric core body 2, the temperature sensor 42, the controller, the filtering module and the wireless transmission module, the piezoelectric core body 2, the filtering module and the controller are sequentially connected with the wireless transmission module, the temperature sensor 42 is connected with the controller, and the controller, the filtering module and the wireless transmission module are integrated on a circuit board.
Although the present invention has been described in detail by referring to the drawings in connection with the preferred embodiments, the present invention is not limited thereto. It will be apparent to those skilled in the art that various changes and modifications can be made without departing from the spirit and scope of the invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. An isolated wireless vibration sensor, comprising: including base, piezoelectric core and isolation component, the base is equipped with the cavity, isolation component includes insulating gland, piezoelectric core sets up in the cavity to it is fixed through insulating gland, insulating gland is equipped with first wiring hole.
2. The wireless vibration sensor for isolating interference of claim 1, wherein: the isolation assembly further comprises an insulating plate, and the insulating gland and the insulating plate are arranged on the upper side and the lower side of the piezoelectric core body and are in contact connection with the piezoelectric core body.
3. The wireless vibration sensor for isolating interference of claim 2, wherein: the bottom of the insulating plate is connected with the base through a limiting boss, and the insulating plate is fixed relative to the base.
4. A wireless vibration sensor for isolating interference according to claim 3, wherein: the piezoelectric cores are distributed along the ring shape, and the insulating gland is provided with a first wiring hole at the center corresponding to the ring shape.
5. The wireless vibration sensor for isolating interference of claim 2, wherein: the insulation board is provided with a blind hole with an upward opening, a temperature sensor is arranged in the blind hole, and the insulation gland is provided with a second wiring hole.
6. The wireless vibration sensor for isolating interference of claim 5, wherein: the second wire holes are distributed in a surrounding mode along the circumferential direction, the insulating gland is in threaded connection with the base, and the second wire holes are long slotted holes.
7. The wireless vibration sensor for isolating interference of claim 2, wherein: the insulating plate is connected with the base through insulating nails.
8. The wireless vibration sensor for isolating interference of claim 1, wherein: the base sets up the opening at the cavity top, insulating gland sets up at the opening part, and the upper surface of insulating gland is less than cavity open-ended height, and the base forms annular step around insulating gland.
9. The wireless vibration sensor for isolating interference of claim 1, wherein: the base is provided with a rope threading hole.
10. The wireless vibration sensor for isolating interference of claim 5, wherein: still include battery, controller, filtering module, wireless transmission module, piezoelectric core, temperature sensor, controller, filtering module and wireless transmission module are connected to the battery, piezoelectric core, filtering module, controller and wireless transmission module connect gradually, temperature sensor connection director.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010288213.4A CN111323114A (en) | 2020-04-14 | 2020-04-14 | Wireless vibration sensor and system for isolating interference |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010288213.4A CN111323114A (en) | 2020-04-14 | 2020-04-14 | Wireless vibration sensor and system for isolating interference |
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| Publication Number | Publication Date |
|---|---|
| CN111323114A true CN111323114A (en) | 2020-06-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010288213.4A Pending CN111323114A (en) | 2020-04-14 | 2020-04-14 | Wireless vibration sensor and system for isolating interference |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102798460A (en) * | 2012-08-08 | 2012-11-28 | 北京理工大学 | Impact-type piezoelectric acceleration transducer |
| CN102901841A (en) * | 2012-11-01 | 2013-01-30 | 江苏联能电子技术有限公司 | Intelligent three-direction acceleration sensor |
| CN203745484U (en) * | 2014-02-18 | 2014-07-30 | 扬州英迈克测控技术有限公司 | High-impact piezoelectric accelerometer |
| CN104215322A (en) * | 2014-09-17 | 2014-12-17 | 成都衔石科技有限公司 | Knock sensor suitable for following automobile |
| CN105953838A (en) * | 2016-06-17 | 2016-09-21 | 中国铁道科学研究院金属及化学研究所 | Anti-high-electromagnetic interference temperature vibration composite sensor for locomotive traction motor bearing online monitoring |
| CN209214669U (en) * | 2018-12-05 | 2019-08-06 | 西人马联合测控（泉州）科技有限公司 | It is a kind of to detect Vibration Meter for monitoring slewing vibration and the wireless communication point of temperature |
| US10416025B1 (en) * | 2013-10-28 | 2019-09-17 | Amphenol (Maryland), Inc. | Electrically isolated vibration sensor |
| CN110715017A (en) * | 2019-08-01 | 2020-01-21 | 江苏联能电子技术有限公司 | Piezoelectric actuator |
-
2020
- 2020-04-14 CN CN202010288213.4A patent/CN111323114A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102798460A (en) * | 2012-08-08 | 2012-11-28 | 北京理工大学 | Impact-type piezoelectric acceleration transducer |
| CN102901841A (en) * | 2012-11-01 | 2013-01-30 | 江苏联能电子技术有限公司 | Intelligent three-direction acceleration sensor |
| US10416025B1 (en) * | 2013-10-28 | 2019-09-17 | Amphenol (Maryland), Inc. | Electrically isolated vibration sensor |
| CN203745484U (en) * | 2014-02-18 | 2014-07-30 | 扬州英迈克测控技术有限公司 | High-impact piezoelectric accelerometer |
| CN104215322A (en) * | 2014-09-17 | 2014-12-17 | 成都衔石科技有限公司 | Knock sensor suitable for following automobile |
| CN105953838A (en) * | 2016-06-17 | 2016-09-21 | 中国铁道科学研究院金属及化学研究所 | Anti-high-electromagnetic interference temperature vibration composite sensor for locomotive traction motor bearing online monitoring |
| CN209214669U (en) * | 2018-12-05 | 2019-08-06 | 西人马联合测控（泉州）科技有限公司 | It is a kind of to detect Vibration Meter for monitoring slewing vibration and the wireless communication point of temperature |
| CN110715017A (en) * | 2019-08-01 | 2020-01-21 | 江苏联能电子技术有限公司 | Piezoelectric actuator |
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Application publication date: 20200623 |