CN216900722U - Electric field intensity testing arrangement based on unmanned aerial vehicle - Google Patents
Electric field intensity testing arrangement based on unmanned aerial vehicle Download PDFInfo
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- CN216900722U CN216900722U CN202122939859.7U CN202122939859U CN216900722U CN 216900722 U CN216900722 U CN 216900722U CN 202122939859 U CN202122939859 U CN 202122939859U CN 216900722 U CN216900722 U CN 216900722U
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Abstract
The utility model discloses an electric field intensity testing device based on an unmanned aerial vehicle, which comprises the unmanned aerial vehicle, an electric field intensity testing unit, a host machine, a wireless transceiving unit and a wireless receiving unit, wherein the electric field intensity testing unit is suspended on the unmanned aerial vehicle and comprises a measuring probe, a filter amplifier, an AD converter and a processor, the measuring probe, the filter amplifier, the AD converter and the processor are sequentially connected, the electric field intensity testing unit is sequentially connected through the wireless transceiving unit, and the host machine is respectively connected with the wireless transceiving unit and the wireless receiving unit; the measuring probe comprises three parallel polar plates and three coils, the three parallel polar plates are mutually orthogonal, each parallel polar plate is arranged in one-to-one correspondence with the coil, and the parallel polar plates are arranged in parallel with the corresponding coils; the thickness of each parallel plate is 2-4 mm. The utility model has the advantages of accurate and reliable measurement, large measurement range and the like.
Description
Technical Field
The utility model mainly relates to the technical field of transformer substations, in particular to an electric field intensity testing device based on an unmanned aerial vehicle.
Background
Because the environment in the transformer substation is comparatively complicated, the actual demand of production is difficult to satisfy to conventional electric field strength test means, utilizes unmanned aerial vehicle to carry on the sensor and detects, helps monitoring power equipment operation conditions. The currently used power frequency field intensity meters in the market of China are of various types, such as foreign NARDA, domestic SST, SY50L and the like, the field intensity meters are applied to the occasions of occupational health evaluation, environment detection and the like, the universal range can only reach 100kV/m, the high-voltage lead voltage on an extra-high voltage insulating support required to be detected is higher than 200kV, an object required to be measured is the surface of an insulating support, a sensor is close to a high-voltage object, U is the peripheral induction voltage (unit is V) of the detected object according to a field intensity formula E which is U/d, d is the distance (m) between the detected object and the sensor, when the voltage is higher than 200kV, and the distance between the sensor and the detected object is less than 20cm, the induced electric field intensity is far larger than the range which can be detected by the field intensity meters provided in China.
SUMMERY OF THE UTILITY MODEL
The technical problem to be solved by the utility model is as follows: aiming at the problems in the prior art, the utility model provides the electric field intensity testing device based on the unmanned aerial vehicle, which is simple in structure, accurate and reliable in measurement.
In order to solve the technical problems, the technical scheme provided by the utility model is as follows:
an electric field strength testing device based on an unmanned aerial vehicle comprises the unmanned aerial vehicle, an electric field strength testing unit, a host, a wireless receiving and sending unit and a wireless receiving unit, wherein the electric field strength testing unit is suspended on the unmanned aerial vehicle and comprises a measuring probe, a filter amplifier, an AD converter and a processor, the measuring probe, the filter amplifier, the AD converter and the processor are sequentially connected, the electric field strength testing unit is sequentially connected through the wireless receiving and sending unit, and the host is respectively connected with the wireless receiving and sending unit and the wireless receiving unit; the measuring probe comprises three parallel polar plates and three coils, the three parallel polar plates are mutually orthogonal, each parallel polar plate is arranged in one-to-one correspondence with the corresponding coil, and the parallel polar plates are arranged in parallel with the corresponding coils; the thickness of each parallel polar plate is 2-4 mm.
As a further improvement of the above technical solution:
the electric field intensity testing unit is connected with the wireless receiving and transmitting unit through optical fibers, and the host is connected with the wireless receiving unit through the optical fibers.
And the wireless transceiving unit is wirelessly connected with the host.
The measuring probe, the filter amplifier, the AD converter and the processor are all integrated in a shell.
The bottom of the shell is provided with a power supply optical fiber inlet and an optical fiber connector, the power supply optical fiber inlet is used for providing a power supply interface, and the optical fiber connector is used for being connected with the wireless transceiving unit.
The parallel polar plate comprises a middle layer, and copper layers are covered on the upper surface and the lower surface of the middle layer.
The middle layer is a glass fiber layer.
The copper layer thickness is 0.1-0.3 um.
The device also comprises a display unit, wherein the display unit is connected with the wireless receiving unit and used for displaying the field intensity detection result.
The electric field strength test unit is fixed on the unmanned aerial vehicle through a fixing frame.
Compared with the prior art, the utility model has the advantages that:
according to the utility model, the electric field strength test unit is fixed on the unmanned aerial vehicle, the unmanned aerial vehicle carries a corresponding measuring probe to be close to an extra-high voltage (the transmission voltage is higher than 200kV) insulating support for measurement, and the safety and reliability are high; the wireless receiving and sending unit is added between the electric field strength testing unit and the host, so that the unmanned aerial vehicle carries the electric field strength testing unit to read detection data of the peripheral field strength of the high-voltage insulating support column with the ultra-high voltage (the transmission voltage is higher than 200kV), and the safety and reliability of the test are ensured; the electric field intensity test unit is connected with the wireless transceiving unit through the optical fiber, so that the reliability of data transmission of the electric field intensity test unit is ensured, and the interference of external signals on the transmission of detection signals can be avoided.
Aiming at a power frequency high voltage field, the thickness of a parallel polar plate in an original measuring probe is changed to be twice of the original thickness, the induced voltage is reduced to about 1/2, the measuring range is increased by about 2 times, and the detection of the object high voltage field can be effectively met.
Drawings
FIG. 1 is a diagram of an embodiment of the present invention in a specific application.
Fig. 2 is a block diagram of an electric field strength testing unit according to an embodiment of the present invention.
Fig. 3 is a perspective view of an electric field strength testing unit according to an embodiment of the present invention.
Fig. 4 is a bottom structure diagram of an electric field strength testing unit in the embodiment of the present invention.
Fig. 5 is a schematic structural diagram of a measurement probe according to an embodiment of the present invention.
FIG. 6 is a schematic diagram showing dimensions of a parallel plate of a measurement probe according to an embodiment of the present invention.
Illustration of the drawings: 1. an unmanned aerial vehicle; 2. an electric field strength test unit; 201. a measuring probe; 2011. parallel pole plates; 20111. an intermediate layer; 20112. a copper layer; 2012. a coil; 202. a filter amplifier; 203. an AD converter; 204. a processor; 205. a housing; 206. a power supply fiber inlet; 207. a power toggle switch; 208. mounting holes; 209. an optical fiber splice; 3. a wireless transceiver unit; 4. a host; 5. and a wireless receiving unit.
Detailed Description
The utility model is further described below with reference to the figures and the specific embodiments of the description.
As shown in fig. 1, the electric field strength testing device based on the unmanned aerial vehicle of the embodiment of the present invention includes an unmanned aerial vehicle 1, an electric field strength testing unit 2, a field strength testing host 4, a wireless transceiver unit 3, and a wireless receiver unit 5, wherein the electric field strength testing unit 2 is suspended on the unmanned aerial vehicle 1; the electric field strength testing unit 2 comprises a measuring probe 201, a filter amplifier 202, an AD converter 203 and a processor 204, the measuring probe 201, the filter amplifier 202, the AD converter 203 and the processor 204 are sequentially connected, and the electric field strength testing unit 2 is sequentially connected with a wireless receiving unit 5 through a wireless transceiving unit 3, a host 4; the measuring probe 201 comprises three parallel polar plates 2011 and three coils 2012, wherein the three parallel polar plates 2011 are mutually orthogonal, each parallel polar plate 2011 is arranged corresponding to one coil 2012, and the parallel polar plates 2011 are arranged in parallel with the corresponding coils 2012; as shown in fig. 5, specifically, three of the parallel plates 2011 are an XOY-plane parallel plate 2011, an XOZ-plane parallel plate 2011, and a YOZ-plane parallel plate 2011; the three coils 2012 are respectively an XOY surface coil 2012, an XOZ surface coil 2012 and an YOZ surface coil 2012, an XOY surface parallel polar plate 2011 is parallel to the XOY surface coil 2012, an XOZ surface parallel polar plate 2011 is parallel to the XOZ surface coil 2012, and a YOZ surface parallel polar plate 2011 is parallel to the YOZ surface coil 2012; wherein the thickness of each parallel plate 2011 is 2-4mm (preferably 3 mm). When the parallel plate 2011 enters the electric field, the voltage at two ends of the parallel plate 2011 is measured, so that the corresponding electric field intensity is measured. The electric field intensity testing unit 2 is connected with the wireless receiving and sending unit 3 through optical fibers, the host 4 is connected with the wireless receiving unit 5 through optical fibers, and the wireless receiving and sending unit 3 is connected with the host 4 through wireless. Of course, the wireless transceiver unit 3 and the host 4 may be connected by an optical fiber if conditions allow.
Specifically, the electric field strength testing unit 2 is fixed on the unmanned aerial vehicle 1 through a fixing frame, the unmanned aerial vehicle 1 carries a corresponding measuring probe 201 to be close to an extra-high voltage (the transmission voltage is higher than 200kV) insulating support, the measuring probe 201 detects the surface electric field of the extra-high voltage insulating support, detected data is amplified by a filter amplifier 202, then converted into a digital signal through an AD converter 203, then sent to a processor 204 to obtain a corresponding electric field signal, then sent to the host 4 through the wireless receiving unit 5, and the host 4 sends to the wireless receiving unit 5; the wireless transceiving unit 3 is added between the electric field strength testing unit 2 and the host 4, so that the unmanned aerial vehicle 1 carries the electric field strength testing unit 2 to read detection data of the peripheral field strength of a high-voltage insulating support column with the ultra-high voltage (the transmission voltage is higher than 200kV), and the safety and reliability of the test are ensured; the electric field strength testing unit 2 is connected with the wireless transceiving unit 3 through optical fibers, so that the reliability of data transmission of the electric field strength testing unit 2 is guaranteed, and the interference of external signals on the transmission of detection signals can be avoided.
In addition, the measurement electric field is a power frequency high voltage field, the highest voltage can reach 600kV, the detection requirement can be met according to the measurement and calculation of the early stage experiment, and the estimated maximum field intensity range can reach 300 kV/m. At present, the sensor is a sensor with market mainstream measuring range, and the measuring range of the electric field intensity is 1V/m-100kV/m, so that the conventional sensor is difficult to meet the measuring requirement.
According to the test data and the formula, it can be calculated that when the input voltage is 600kV, the induced voltage is 17.625VRMS, which is about 48Vpp, so that the signal has to be attenuated by widening the range. According to the field strength formula E ═ U/d, the parallel plates 2011 in the measuring probe 201 are modified from the original 80mm × 1.5mm to 80mm × 3mm, as shown in fig. 6. The thickness of the parallel polar plate 2011 is in a nonlinear relation with the measuring range, the thickness of the parallel polar plate 2011 is changed from 1.5mm to 3mm, the induction voltage is reduced to about 1/2, the measuring range is increased by about 2 times, and the detection of an object high-voltage field can be effectively met.
In one embodiment, as shown in fig. 3 and 4, the measurement probe 201, the filter amplifier 202, the AD converter 203, and the processor 204 are integrated into a housing 205. Wherein the bottom of the housing 205 is provided with a power supply fiber inlet 206, fiber connectors 209 (including TX and RX), mounting holes 208 and a power supply toggle switch 207. Wherein the power fiber inlet 206 is used for providing a power interface, and the fiber connector 209 is connected with the wireless transceiver unit 3 through a fiber. The mounting hole 208 is connected to a fixing frame of the unmanned aerial vehicle 1 through a thread. Specifically, the parallel plate 2011 includes a middle layer 20111 (a glass fiber layer RF-4), the upper and lower surfaces of the middle layer 20111 are covered with copper layers 20112, and the thickness of the copper layers 20112 is 0.1-0.3um, preferably 0.2 um.
In a specific embodiment, the device further comprises a display unit (such as a display terminal), and the display unit is connected to the wireless receiving unit 5 and is used for displaying the field intensity detection result.
Description of the test: when the device is put into a uniform electric field, the voltage value input to the booster is adjusted by the voltage regulator, and the field intensity distribution values of different voltages at different distances are recorded. Through tests, the field strength test data of the device between 0m and 100m are basically consistent, and the wireless transceiving distance of the device can reach 100 m. The input voltage is 1-30kV, the distance between the probe and the transformer porcelain insulator is 10-50cm, and the electric field strength test shows that the voltage is normal and meets the requirements. After the device is transformed and optimized, the field intensity test value and the actual value deviate, and a check coefficient needs to be added. Tests show that the field strength test data check coefficient is 1.85, namely the true value E is equal to the test value E x 1.85, and finally the display value is output. In a high voltage field, the electric field strength testing unit 2 and the host 4 can keep good wireless transmission performance; the strength of the induced electric field increases with the increase of the input voltage; the strength of the induced electric field decreases with increasing distance from the source of the signal to be measured. The wireless transmission distance, the sensor range and the field intensity test data accuracy of the utility model can all reach the expected target.
The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above-mentioned embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the utility model may be made by those skilled in the art without departing from the principle of the utility model.
Claims (10)
1. The utility model provides an electric field strength testing arrangement based on unmanned aerial vehicle, characterized in that, including unmanned aerial vehicle (1), electric field strength test unit (2), host computer (4), wireless transceiver unit (3) and wireless receiving unit (5), electric field strength test unit (2) suspend in midair on unmanned aerial vehicle (1), electric field strength test unit (2) include measuring probe (201), filter amplifier (202), AD converter (203) and treater (204), measuring probe (201), filter amplifier (202), AD converter (203) and treater (204) link to each other in proper order, electric field strength test unit (2) link to each other through wireless transceiver unit (3) in proper order, host computer (4) link to each other with wireless transceiver unit (3) and wireless receiving unit (5) respectively; the measuring probe (201) comprises three parallel polar plates (2011) and three coils (2012), the three parallel polar plates (2011) are mutually orthogonal, each parallel polar plate (2011) and each coil (2012) are arranged in a one-to-one correspondence mode, and the parallel polar plates (2011) are arranged in parallel with the corresponding coils (2012); the thickness of each parallel polar plate (2011) is 2-4 mm.
2. The unmanned aerial vehicle-based electric field strength testing device of claim 1, wherein the electric field strength testing unit (2) is in optical fiber connection with the wireless transceiver unit (3), and the host (4) is in optical fiber connection with the wireless receiver unit (5).
3. The unmanned aerial vehicle-based electric field strength testing device of claim 2, wherein the wireless transceiver unit (3) is wirelessly connected with the host (4).
4. The drone-based electric field strength testing device of claim 1, 2 or 3, wherein the measurement probe (201), the filter amplifier (202), the AD converter (203) and the processor (204) are all integrated in a housing (205).
5. The unmanned aerial vehicle-based electric field strength testing device of claim 4, wherein the bottom of the housing (205) is provided with a power supply optical fiber inlet (206) and an optical fiber connector (209), the power supply optical fiber inlet (206) is used for providing a power supply interface, and the optical fiber connector (209) is used for being connected with the wireless transceiver unit (3).
6. The unmanned aerial vehicle-based electric field strength testing device of claim 1, 2 or 3, wherein the parallel polar plate (2011) comprises a middle layer (20111), and upper and lower surfaces of the middle layer (20111) are covered with copper layers (20112).
7. The unmanned aerial vehicle-based electric field strength testing device of claim 6, wherein the intermediate layer (20111) is a fiberglass layer.
8. The unmanned aerial vehicle-based electric field strength testing device of claim 6, wherein the copper layer (20112) is 0.1-0.3um thick.
9. The unmanned aerial vehicle-based electric field strength testing device of claim 1, 2 or 3, further comprising a display unit, wherein the display unit is connected with the wireless receiving unit (5) and used for displaying the field strength detection result.
10. The unmanned aerial vehicle-based electric field strength testing device of claim 1, 2 or 3, wherein the electric field strength testing unit (2) is fixed on the unmanned aerial vehicle (1) through a fixing frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122939859.7U CN216900722U (en) | 2021-11-25 | 2021-11-25 | Electric field intensity testing arrangement based on unmanned aerial vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122939859.7U CN216900722U (en) | 2021-11-25 | 2021-11-25 | Electric field intensity testing arrangement based on unmanned aerial vehicle |
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| Publication Number | Publication Date |
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| CN216900722U true CN216900722U (en) | 2022-07-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202122939859.7U Active CN216900722U (en) | 2021-11-25 | 2021-11-25 | Electric field intensity testing arrangement based on unmanned aerial vehicle |
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2021
- 2021-11-25 CN CN202122939859.7U patent/CN216900722U/en active Active
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