CN211238498U - Endoscopic low-frequency near-field transmitting antenna for miniaturized pipeline - Google Patents
Endoscopic low-frequency near-field transmitting antenna for miniaturized pipeline Download PDFInfo
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- CN211238498U CN211238498U CN202020427039.2U CN202020427039U CN211238498U CN 211238498 U CN211238498 U CN 211238498U CN 202020427039 U CN202020427039 U CN 202020427039U CN 211238498 U CN211238498 U CN 211238498U
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Abstract
The utility model discloses an peep low frequency near field transmitting antenna in miniaturized pipeline includes: the induction antenna, the rear shell and the guider are used for enhancing electromagnetic wave signals; the inductive antenna is arranged in the rear shell, and the guider is arranged at the front end of the rear shell; the miniaturized pipeline endoscopic low-frequency near-field transmitting antenna combines with a magnetic conductive material, the distribution of the whole excitation is changed by adding a guider, the distribution range of closed magnetic lines is expanded, the diameter of the inductive antenna is reduced, the condition of reducing the transmitting efficiency is avoided, and the purposes of keeping the signal transmission distance and the signal transmission strength unchanged can be achieved; the diameter of the miniaturized pipeline endoscopic low-frequency near-field transmitting antenna can be controlled to be below 10 mm.
Description
Technical Field
The utility model relates to a pipeline transmitting antenna technical field especially relates to a peep low frequency near field transmitting antenna in miniaturized pipeline.
Background
The pipeline sight glass is one of main accessories on an industrial pipeline device and is widely applied to pipelines of industrial production devices such as petroleum, chemical industry, medicine, food and the like; the top end of a pipeline or an endoscopic push rod is provided with a detector, a low-frequency antenna is arranged in the detector, a low-frequency signal is continuously transmitted, the push rod is gradually pushed into the pipeline, a user uses a receiver on the ground to detect the low-frequency signal, the signal is analyzed and calculated, the ground position and the depth of the detector are determined, the push rod is continuously pushed in, and the user can accurately obtain data such as the depth, the trend and the like of the pipeline when detecting on the ground; it is common to add an electromagnetic wave communication system in a pipeline endoscope, and in the electromagnetic wave communication, water vapor, buildings and mountains all have great influence on the transmission of electromagnetic waves. Generally, the electromagnetic wave passes through the obstacle to generate attenuation, and the higher the frequency of the electromagnetic wave is, the larger the attenuation is, the higher the conductivity of the obstacle is, and the larger the attenuation is. In the pipeline and endoscope industries, scenes such as complex soil, water areas, cast iron pipes and the like greatly restrict communication; the pipeline and endoscope industry uses electromagnetic waves with very low frequency, usually very low frequency, audio frequency, very low frequency and low frequency between 65 Hz-300 Khz, and the commonly used frequencies are 512Hz, 640Hz, 850Hz, 8kHz, 16kHz and 33 Khz. In the patent nos.: 03145224.8 discloses an electrical connector with electromagnetic wave guiding function, which can guide the generated electromagnetic wave to ground instantly to prevent it from diverging.
Generally, an electromagnetic radiation field is distinguished into a far field (induction field) and a near field (radiation field) according to a difference between the induction field and the radiation field. Since the division of the far field and the near field is relatively complex, the division is performed according to different working environments and measurement purposes, generally speaking, a field source is taken as a center, and a region in three wavelength ranges is generally called as the near field and can also be called as an induction field; the spatial range outside the three wavelengths of radius centered on the field source is called the far field and may also be called the radiation field. The near field generally has the following characteristics: in the near field, the electric field strength is not in definite proportion to the magnetic field strength. Generally, for field sources with high voltage and low current (such as transmitting antennas, feeder lines and the like), the electric field is much stronger than the magnetic field, and for field sources with low voltage and high current (such as dies of some induction heating equipment), the magnetic field is much stronger than the electric field;
existing probes in the plumbing and endoscopic industries have several disadvantages: the volume is still too large, the transmitting antenna is difficult to be installed on a small pipeline and an endoscopic detector, so that the volume of the pipeline endoscopic detector cannot be made small, the small pipeline with the diameter of below 32mm and a small gap are difficult to enter, and the detector cannot pass through basically if the pipeline turns; the transmitting power is low, and the requirements cannot be met in some occasions, such as iron pipes or high-salinity seawater, because the signal attenuation is large, the requirement on the detection distance cannot be met; the emission efficiency is low, the power consumption is high, and the heat is serious.
And further breakthrough cannot be obtained through the following experimental trials:
1. in an attempt to use smaller wires, the resistance of the wires causes significant losses, the Q of the inductor decreases, and the emission efficiency decreases.
2. The novel magnetic conductive material is used, the ferrite and manganese zinc ferrite materials are tried to be used for manufacturing the antenna, the Q value of the inductance antenna is improved to a limited extent, and the processing and forming are difficult.
3. The antenna is wound by using a plurality of turns of conducting wires, so that the transmitting efficiency is slightly reduced; the silver-plated wire is used for winding the antenna, so that the emission efficiency is unchanged. Analysis the current skin effect was not apparent because the VLF frequency was very low.
4. The antenna is driven by higher voltage, the transmission power is improved, and the transmission efficiency is unchanged. The antenna generates a large amount of heat and the insulation strength of the wire cannot withstand higher voltages for a long time.
SUMMERY OF THE UTILITY MODEL
For peeping interior low frequency near field transmitting antenna with miniaturized pipeline and reducing the size of a dimension, and do not reduce the intensity of transmission electromagnetic wave signal, can make signal transmission stable in complicated scenes such as underground, the utility model discloses an peep interior low frequency near field transmitting antenna of miniature pipeline, include: the induction antenna, the rear shell and the guider are used for enhancing electromagnetic wave signals; the inductive antenna is arranged in the rear shell, and the guider is arranged at the front end of the rear shell; the miniaturized pipeline endoscopic low-frequency near-field transmitting antenna combines a magnetic conductive material, a guider is added, the diameter is controlled to be below 10mm, and the signal transmission distance is unchanged.
The utility model discloses a following technical scheme realizes above-mentioned purpose:
a miniaturized pipeline endoscopic low-frequency near-field transmitting antenna comprises: the induction antenna, the rear shell and the guider are used for enhancing electromagnetic wave signals; the inductance antenna is arranged in the rear shell, and the guider is arranged at the front end of the rear shell.
Preferably, the miniaturized pipeline endoscopic low-frequency near-field transmitting antenna further comprises a front shell, wherein the front shell is provided with a capsule detector, and the capsule detector comprises one or a combination of a temperature sensor, a pressure sensor and a humidity sensor.
Preferably, a camera is arranged in the middle of the front end of the front shell.
Preferably, the rear shell is provided with a driving circuit at the tail end.
Preferably, the inductance antenna is tightly fixed to the rear case by a sealing ring.
Preferably, the rear case is fixedly coupled to the front case by a protection spring.
Preferably, the inductive antenna is connected to the front housing by an electronic wire.
Preferably, the guide is provided as one or more strands of magnetically permeable material.
Preferably, the guide is provided in a cubic, rectangular parallelepiped, cylindrical or long ring-shaped configuration.
Preferably, the air gap between the director and the magnetically permeable material of the inductive antenna is no more than 2 mm.
The utility model discloses the beneficial effect who reaches is: a miniaturized pipeline endoscope low-frequency near-field transmitting antenna comprises: the induction antenna, the rear shell and the guider are used for enhancing electromagnetic wave signals; the inductive antenna is arranged in the rear shell, and the guider is arranged at the front end of the rear shell; the miniaturized pipeline endoscopic low-frequency near-field transmitting antenna combines with a magnetic conductive material, the distribution of the whole excitation is changed by adding a guider, the distribution range of closed magnetic lines is expanded, the diameter of the inductive antenna is reduced, the condition of reducing the transmitting efficiency is avoided, and the purposes of keeping the signal transmission distance and the signal transmission strength unchanged can be achieved; the diameter of the miniaturized pipeline endoscopic low-frequency near-field transmitting antenna can be controlled to be below 10 mm.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
Fig. 1 is an exploded view of a miniaturized low-frequency near-field transmitting antenna for pipeline endoscope according to the present invention;
the reference numerals are explained below:
1. a rear housing; 2. an inductive antenna; 3. a guide; 4. a front housing; 5. a capsule detector; 6. a camera; 7. a drive circuit; 8. a seal ring; 9. a protection spring; 21. an electron beam.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings.
The first embodiment:
referring to the first figure, a miniaturized pipeline endoscopic low-frequency near-field transmitting antenna comprises: the antenna comprises an inductance antenna 2, a rear shell 1 and a guider 3 for enhancing electromagnetic wave signals; the inductance antenna 2 is arranged in the rear shell 1, and the guider 3 is arranged at the front end of the rear shell 1. It should be noted here that the guide 3 is a device capable of enhancing electromagnetic signals; and the inductive antenna 2 can be replaced by a wife emitter, a bluetooth emitter or an infrared emitter according to the needs of a user.
Further, the miniaturized pipeline endoscopic low-frequency near-field transmitting antenna further comprises a front shell 4, the front shell 4 is provided with a capsule detector 5, and the capsule detector 5 is simultaneously provided with a temperature sensor, a pressure sensor and a humidity sensor.
Further, a camera 6 is arranged in the middle of the front end of the front shell 4.
Further, a driving circuit 7 is arranged at the tail end of the rear shell 1; the drive circuit 7 is a signal electronic drive device for signal conversion and signal calculation.
Further, the inductance antenna 2 is tightly fixed to the rear case 1 through a sealing ring 8.
Further, the rear housing 1 is fixedly connected to the front housing 4 through a protection spring 9; it should be noted that the protection spring 9 may also be a rubber tube or a plastic tube.
Further, the inductive antenna 2 is connected to the front shell 4 by an electronic wire 21; it should be noted that the inductive antenna 2 is connected to the circuit board in the front case 4 through an electronic wire 21, and a power supply is further disposed in the front case 4.
Further, a searchlight is arranged at the front end of the front shell 4 around the camera 6, and it should be noted that the searchlight is arranged to facilitate the camera 6 to collect images.
Further, the guide 3 is provided as one or more strands of magnetically conductive material.
Further, the guide 3 is provided in a cubic, rectangular parallelepiped, cylindrical or long ring-shaped configuration.
When the guider 3 is set to be a cube, the larger the total magnetizer volume of the inductive antenna is, the better the excitation of the inductive antenna can be obtained, and the stronger the outward magnetic field radiation is;
when the guide 3 is in a cuboid or long annular structure, excitation can radiate to the space through the magnetic conductive material of the newly-added guide, and the overall radiation efficiency is increased.
Further, the gap between the director 3 and the magnetically conductive material of the inductive antenna 2 does not exceed 2 mm. It should be noted that the inductive antenna is composed of a magnetic conductive material and an electric wire.
Second embodiment:
the second embodiment differs from the first embodiment in that: the guider 3 is made of soft magnetic metal and is used for increasing low-frequency antenna signals; the capsule detector 5 is only provided with a temperature sensor and a pressure sensor.
The third embodiment:
the third embodiment differs from the first embodiment in that: the capsule detector 5 is provided with only a temperature sensor and a humidity sensor.
The fourth embodiment:
the fourth embodiment differs from the first embodiment in that: the capsule detector 5 is provided with only a pressure sensor and a humidity sensor.
Fifth embodiment:
the fifth embodiment differs from the first embodiment in that: the capsule detector 5 is provided with only a temperature sensor.
Sixth embodiment:
the sixth embodiment is different from the first embodiment in that: the capsule detector 5 is provided with only a humidity sensor.
Seventh embodiment:
the seventh embodiment differs from the first embodiment in that: the capsule detector 5 is provided with only a pressure sensor.
By adding the magnetic conductive material of the guider, the distribution of excitation of the whole inductance antenna can be changed, the distribution range of closed magnetic lines is enlarged, and the closed magnetic lines are not closed from a small space surrounding the inductance, so that higher emission efficiency is obtained. Above the transmitting antenna, the receiving antenna on the ground can obtain higher field intensity, thereby improving the communication distance; the magnetic conductive material of the newly-added guider belongs to rigid magnetic conductive material, so that the diameter of a detector at the top end of a pipeline or an endoscopic push rod can be reduced, but the length cannot be reduced; the detector does not interfere with the operations of movement, turning, recovery and the like of the detector.
The utility model discloses the beneficial effect who reaches is: a miniaturized pipeline endoscope low-frequency near-field transmitting antenna comprises: the induction antenna, the rear shell and the guider are used for enhancing electromagnetic wave signals; the inductive antenna is arranged in the rear shell, and the guider is arranged at the front end of the rear shell; the miniaturized pipeline endoscopic low-frequency near-field transmitting antenna combines with a magnetic conductive material, the distribution of the whole excitation is changed by adding a guider, the distribution range of closed magnetic lines is expanded, the diameter of the inductive antenna is reduced, the condition of reducing the transmitting efficiency is avoided, and the purposes of keeping the signal transmission distance and the signal transmission strength unchanged can be achieved; the diameter of the miniaturized pipeline endoscopic low-frequency near-field transmitting antenna can be controlled to be below 10 mm.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention.
Claims (10)
1. A miniaturized pipeline endoscopic low-frequency near-field transmitting antenna is characterized by comprising: the induction antenna, the rear shell and the guider are used for enhancing electromagnetic wave signals; the inductance antenna is arranged in the rear shell, and the guider is arranged at the front end of the rear shell.
2. The miniaturized, low frequency, near field, transmit antenna for borescope according to claim 1, wherein the director is provided as one or more strands of magnetically permeable material.
3. The miniaturized duct endoscopic low frequency near field transmitting antenna according to claim 1, further comprising a front shell, wherein the front shell is provided with a capsule detector, the capsule detector comprises one or a combination of a temperature sensor, a pressure sensor and a humidity sensor.
4. The miniaturized duct endoscopic low frequency near field transmitting antenna according to claim 1, wherein a driving circuit is provided at the tail end of the rear housing.
5. The miniaturized low-frequency near-field transmitting antenna for pipeline endoscopy of claim 3, wherein a camera is disposed at a middle portion of a front end of the front shell.
6. The miniaturized, low-frequency, near-field, transmitting antenna for pipeline endoscopy of claim 1, wherein the inductive antenna is tightly secured to the rear housing by a gasket.
7. The miniaturized, low frequency, near field, transmitting antenna for borescope according to claim 3, wherein the rear housing is fixedly attached to the front housing by a protective spring or a rubber tube.
8. The miniaturized, low frequency, near field, transmit antenna for borescope according to claim 3, wherein the inductive antenna is connected to the front housing by an electrical wire.
9. The miniaturized, low-frequency, near-field, transmitting antenna for borescope according to claim 1 or 2, wherein the director is provided in a cubic, rectangular parallelepiped, cylindrical or long ring configuration.
10. The miniaturized, ducted, endoscopic low frequency near field transmitting antenna according to claim 1 or 2, wherein a gap between the director and the magnetically permeable material of the inductive antenna is no more than 2 millimeters.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921234354 | 2019-08-01 | ||
| CN2019212343547 | 2019-08-01 |
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| CN211238498U true CN211238498U (en) | 2020-08-11 |
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| CN202020427039.2U Active CN211238498U (en) | 2019-08-01 | 2020-03-30 | Endoscopic low-frequency near-field transmitting antenna for miniaturized pipeline |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115790673A (en) * | 2023-02-06 | 2023-03-14 | 国机传感科技有限公司 | Extremely-low-frequency electromagnetic wave bidirectional magnetic sensing device and method |
| WO2023006128A3 (en) * | 2022-07-07 | 2023-09-21 | 国机传感科技有限公司 | System, method and apparatus for transmitting extremely-low-frequency magnetic sensing signal |
-
2020
- 2020-03-30 CN CN202020427039.2U patent/CN211238498U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023006128A3 (en) * | 2022-07-07 | 2023-09-21 | 国机传感科技有限公司 | System, method and apparatus for transmitting extremely-low-frequency magnetic sensing signal |
| CN115790673A (en) * | 2023-02-06 | 2023-03-14 | 国机传感科技有限公司 | Extremely-low-frequency electromagnetic wave bidirectional magnetic sensing device and method |
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