CN212692941U - Direct-buried cable damage prevention detection device based on wireless power transmission technology - Google Patents
Direct-buried cable damage prevention detection device based on wireless power transmission technology Download PDFInfo
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- CN212692941U CN212692941U CN202021804922.5U CN202021804922U CN212692941U CN 212692941 U CN212692941 U CN 212692941U CN 202021804922 U CN202021804922 U CN 202021804922U CN 212692941 U CN212692941 U CN 212692941U
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Abstract
The utility model discloses a direct-buried cable damage prevention detection device based on wireless power transmission technology, which is characterized in that the device comprises an underground waterproof shell, wherein an underground sensor, a control system, an underground power supply, an underground signal transmitter and an underground receiving coil are arranged in the underground waterproof shell, the underground receiving coil, the underground power supply and the control system are connected in sequence, and the control system is respectively connected with the underground sensor and the underground signal transmitter; the detection device also comprises a ground signal receiver, a ground signal processor, a ground power supply and a ground transmitting coil which are connected in sequence; the ground transmitting coil is connected with the underground receiving coil through magnetic coupling, and the underground signal transmitter is in communication connection with the ground signal receiver. This device project organization is reasonable, the function is effective, realizes detecting the impaired condition of underground cable.
Description
Technical Field
The utility model belongs to the technical field of wireless power transmission, especially, relate to a direct-burried cable anti-damage detection device based on wireless power transmission technique.
Background
Electric power is the national foundation, and it is important to guarantee the safe operation of the power line. However, the traditional 10KV underground transmission lines in urban areas are in changeable underground environments throughout the year, the burial depth is small, the time that the power cables are damaged by construction equipment frequently happens every year, particularly, the construction is frequent in urban areas which are planned and transformed, accidents that underground cables are dug by mistake and broken due to heavy pressure are more prone to happening, electric paralysis in large-scale urban areas is easily caused, great economic loss is brought to enterprises and shops, and meanwhile, government departments are also heavy in loss, so that monitoring the buried cables in the areas during construction is an important work for preventing the buried cables from being damaged.
At present, the existing underground cable is mainly monitored in a mode of directly connecting a sensor by a wire. The method is practical in the area without construction, but in the urban construction area, the wires connected with the underground sensing equipment are easy to be mistakenly dug under the excavation and heavy pressing of the construction equipment, so that the safe operation of the underground 10KV cable cannot be monitored.
SUMMERY OF THE UTILITY MODEL
The utility model provides a direct-burried cable prevents destroying detection device based on wireless power transmission technique to solve 10KV direct-burried cable and lay in the underground, its impaired state of unable test receives the construction or the vehicle and heavily pushes down and the problem of destroying.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a direct-buried cable damage prevention detection device based on a wireless power transmission technology comprises an underground waterproof shell, wherein an underground sensor, a control system, an underground power supply, an underground signal transmitter and an underground receiving coil are arranged in the underground waterproof shell, the underground receiving coil, the underground power supply and the control system are sequentially connected, and the control system is respectively connected with the underground sensor and the underground signal transmitter; the detection device also comprises a ground signal receiver, a ground signal processor, a ground power supply and a ground transmitting coil which are connected in sequence; the ground transmitting coil is connected with the underground receiving coil through magnetic coupling, and the underground signal transmitter is in communication connection with the ground signal receiver.
As a further description of the above technical solution: the underground signal transmitter is connected with the underground sensor.
As a further description of the above technical solution: the ground signal processor comprises a data processing unit, an LCD display and a beacon detection module, wherein the data processing unit is respectively connected with the LCD display and the beacon detection module.
As a further description of the above technical solution: and the data processing unit is respectively connected with the ground signal receiver and the ground power supply.
As a further description of the above technical solution: underground signal transmitter includes loRa wireless communication module and omnidirectional antenna portion, loRa wireless communication module and omnidirectional antenna portion are connected.
As a further description of the above technical solution: the underground sensor is a stainless steel armored contact sensor.
As a further description of the above technical solution: the control system reads data of the underground sensor and temporarily stores the data in the underground sensor in a position corresponding to an internal storage space of the underground sensor by using a data pointer; sending out the acquired data through a signal transmitter, and pointing the data pointer to the starting point of the storage space position again after the data is finished; when a construction unit carries out site survey or a worker regularly patrols, the mobile phone equipment is close to the beacon detection device, the device can be triggered to operate, and detected data can be displayed on the LCD screen.
As a further description of the above technical solution: the wireless energy transfer part adopts magnetic coupling resonant wireless electric energy transfer, and the coil structure is a planar spiral type.
As a further description of the above technical solution: the waterproof shell is made of PVC or PMMA.
As a further description of the above technical solution: the underground sensor adopts a temperature sensor, a vibration sensor or a humidity sensor.
The utility model discloses following beneficial effect has:
the utility model provides a pair of direct-burried cable damage prevention detection device based on wireless power transmission technology, its project organization is reasonable, the function is effective, realizes detecting the impaired condition of underground cable. Wireless electric energy is transmitted to an underground sensing network for power supply, so that higher efficiency and higher safety are ensured; meanwhile, wireless data transmission is realized in a LoRa wireless communication mode, and the system can be conveniently arranged underground to collect cable state information on the premise of lower power consumption; besides being applied to the field of damage prevention of 10KV directly-buried cables, the device is also suitable for state detection of other various underground pipelines, lines and the like. The utility model discloses simple structure, low cost, lay the convenience, use easily, the reliability is high, hopefully provide support for relevant underground environment detection achievement.
Drawings
Fig. 1 is the utility model provides a pair of direct-burried cable damage prevention detection device's schematic diagram based on wireless power transmission technology.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1, the present invention provides an embodiment: the underground waterproof device comprises an underground waterproof shell, wherein an underground sensor, a control system, an underground power supply, an underground signal transmitter and an underground receiving coil are arranged in the underground waterproof shell, the underground receiving coil, the underground power supply and the control system are sequentially connected, and the control system is respectively connected with the underground sensor and the underground signal transmitter; the detection device also comprises a ground signal receiver, a ground signal processor, a ground power supply and a ground transmitting coil which are connected in sequence; the ground transmitting coil is connected with the underground receiving coil through magnetic coupling so as to transmit wireless electric energy through magnetic coupling resonance, and the underground signal transmitter is in communication connection with the ground signal receiver; the underground signal transmitter is connected with the underground sensor.
In this embodiment, the ground signal processor includes a data processing unit (microcontroller), an LCD display, and a beacon detection module, where the data processing unit is connected to the LCD display and the beacon detection module respectively; the LCD display can display the underground cable state detected by the underground sensor; the beacon detection module aims to trigger the device to operate by using a mobile phone to approach the beacon when a construction unit carries out site survey or a worker regularly patrols.
In this embodiment, the data processing unit is respectively connected with the ground signal receiver and the ground power supply; the underground signal transmitter comprises an LoRa wireless communication module and an omnidirectional antenna part, wherein the LoRa wireless communication module is connected with the omnidirectional antenna part; the underground sensor is a stainless steel armored contact sensor.
In this embodiment, the control system reads data of the underground sensor, and temporarily stores the data in the underground sensor in a position corresponding to an internal storage space of the underground sensor by using a data pointer; sending out the acquired data through a signal transmitter, and pointing the data pointer to the starting point of the storage space position again after the data is finished; when a construction unit carries out site survey or a worker regularly patrols, the mobile phone equipment is close to the beacon detection device, the device can be triggered to operate, and detected data can be displayed on the LCD screen.
In this embodiment, the wireless energy transfer part adopts magnetic coupling resonant wireless energy transfer, and the coil structure is a planar spiral type.
As shown in fig. 1, the control system and the microcontroller (data processing unit) are the core control processing part of the apparatus, and the control system can read the sensor data according to the preset time sequence and temporarily store the underground sensor data in the corresponding position of the internal storage space by using the data pointer. When the storage position is full of underground sensor data, the acquired data is sent out through the LoRa wireless communication module, and the data pointer points to the starting point of the storage space position again after the data is completed. The awakening and sleeping of each function on the node is mainly realized by the microcontroller, and after the beacon detects the mobile phone, the microcontroller controls the wireless power transmission part to provide power for the underground sensing network, so that the underground sensing network starts to work. The controller model which has high integration level, good stability, lower operation power consumption and supports low power consumption dormancy is adopted as much as possible in the design.
The power supply part of the device adopts a working mode of supplying power to the underground sensing network by adopting a wireless power transmission technology. The working voltage of the system is 3.3V, the underground power module adopts a polymer lithium battery for storing electricity, the model of the battery is 751728, the nominal voltage is 3.7V, and the low-dropout regulator converts the 3.7V voltage provided by the low-dropout regulator into the 3.3V system working voltage. The low dropout regulator should be selected to have a small package, few required peripheral components, and a stable output. In addition, the wireless power transmission part is used for providing stable, reliable, safe and efficient power supply for the underground node. The wireless power transmission device consists of a wireless power transmission coil, a power amplifier and an external circuit. The wireless power transmission module should select a coil structure which is more efficient and stable in transmission as far as possible in the design, and the size is not too large, and meanwhile, enough transmission power is also ensured. When the device of the wireless power transmission part is installed, whether the transmission power is approximately matched with the simulation structure or not is tested, if the difference is too large, whether the coil positions are aligned or not is checked in time, the coil positions are adjusted in time, and the transmission efficiency is guaranteed.
The LoRa data transmission part is used for providing a wireless transmission function with strong penetrating power and simple structure for the node. It comprises loRa wireless communication module and its external circuit. The LoRa wireless communication module is designed to be convenient to connect with the microcontroller through simpler interfaces such as a serial interface. If the LoRa wireless communication module can also use ASCII code for control, the compactness and the reliability of the design node can be further improved. The antennas in the peripheral circuits of the LoRa wireless communication module also have a significant effect on its transmission characteristics. Since the nodes may change their positions due to soil movement after being laid in the soil, an omni antenna portion is required to compensate for this problem. Considering the volume and cost of the nodes, it is recommended to use a ceramic antenna or a PCB antenna in order to obtain the data transmitted by each node by using a receiving device. It should be noted that, because the signal sent by the LoRa wireless communication module is greatly attenuated due to the influence of soil absorption, the situation that data sent by a plurality of nodes in the same area simultaneously collide is much smaller than that sent by the nodes arranged on the ground, and at this time, the transmission adopts a dual-transmission mode (i.e., data is transmitted twice during data transmission), so that it is basically ensured that data loss does not occur. If the nodes are distributed more and the buried depth is shallow, a multi-transmission mode can be considered.
The underground sensor is selected according to the data to be detected, and can adopt a temperature sensor, a vibration sensor, a humidity sensor and the like. Meanwhile, the sensor works in a severe underground environment and needs a stainless steel armored contact type sensor model. In order to reduce the power consumption of the sensing node, a parasitic power supply mode is also needed to be used for the power supply mode of the sensor. In addition, the communication interface between the contact sensor and the node control system is as simple as possible, and a detection result which is relatively accurate and has relatively high resolution can be provided for the contact sensor and the node control system.
The material of waterproof casing can select PVC or PMMA material, and the shape of waterproof casing is the sphere so that better pressure-bearing. Holes are formed in the surface of the waterproof shell so that the sensor can be in contact with the external soil. The exposed size of the sensor is preferably less than 5 mm. And sealing the waterproof shell with a gap by using waterproof sealant to ensure the waterproofness of the underground device. The PCB is horizontally placed in the center of the spherical shell in the horizontal diameter direction and is fixed.
In this embodiment, the control system and the microcontroller both adopt an STM8L101 single chip microcomputer produced by seiko semiconductor corporation, and the single chip microcomputer is a 20-pin 8-bit CMOS flash memory single chip microcomputer. In implementation, STM8L101 singlechip all adopts TSSOP20 encapsulation to realize the miniaturization of encapsulation. The STM8L101 singlechip adopts 1.65-3.6V power supply in the work, uses the output voltage conversion of low-dropout regulator with the battery for the 8 pin VDD of 3.3V access singlechip. The 4-pin of the single chip microcomputer is a reset end and is used for resetting and returning to zero after data is sent. The rest pins except PB0 and PB4 are I/O ports of the single chip microcomputer and are used for supplying power to the sensor, receiving sensor data and transmitting data to a LoRa signal transmitting end. The low dropout regulator selects an RT9193 low dropout regulator, and the output voltage is adjustable between 1.5V and 5.0V.
The LoRa wireless communication module adopts a wireless chip HKW52-4S of LoRaTM modulation technology of SEMTECH company, and the module has the advantages of ultra-long-distance spread spectrum communication, high interference resistance and maximum reduction of current power consumption. The module is small in size (16.8 × 16.6mm) and is convenient to arrange on a PCB with a small area. The STM8L101 singlechip sends an ASCII code instruction to the STM singlechip through a serial communication mode to control and realize a transmission function. The module also uses a 3.3V power supply with an output power of 433M signal up to +20 dbm. When the module is not required to transmit data, the module is required to be dormant, so that energy consumption is saved, and the service lives of the battery and the node are prolonged. The STM8L101 single chip microcomputer enables the HKW52-4S to enter a sleep state by sending an ASCII code format sys sleep instruction, and the current of the HKW52-4S in the sleep state is only 0.2 muA. The transmitting antenna adopts a RAINSUNAN1603-433M omnidirectional patch antenna.
In order to satisfy and carry out distributing type, low-cost, remote high-efficient school and survey to underground sensor network, the utility model discloses the quasi-combination has better transmission characteristic's loRa wireless communication technique in soil, realizes low-cost, low-power consumption, simple structure, lays convenient, uses easy wireless sensing node, provides feasible detection means for relevant fields such as the safety monitoring of underground cable breakage-proof, underground pipeline.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.
Claims (8)
1. A direct-buried cable damage prevention detection device based on a wireless power transmission technology is characterized by comprising an underground waterproof shell, wherein an underground sensor, a control system, an underground power supply, an underground signal transmitter and an underground receiving coil are arranged in the underground waterproof shell, the underground receiving coil, the underground power supply and the control system are sequentially connected, and the control system is respectively connected with the underground sensor and the underground signal transmitter; the detection device also comprises a ground signal receiver, a ground signal processor, a ground power supply and a ground transmitting coil which are connected in sequence; the ground transmitting coil is connected with the underground receiving coil through magnetic coupling, and the underground signal transmitter is in communication connection with the ground signal receiver.
2. The sensing device of claim 1, wherein the subsurface signal transmitter is coupled to a subsurface sensor.
3. The detection device according to claim 2, wherein the ground signal processor comprises a data processing unit, an LCD display and a beacon detection module, the data processing unit being connected to the LCD display and the beacon detection module, respectively.
4. The detection device according to claim 3, wherein the data processing unit is connected with a ground signal receiver and a ground power supply respectively.
5. The apparatus of claim 4, wherein the underground signal transmitter comprises a LoRa wireless communication module and an omnidirectional antenna portion, and the LoRa wireless communication module is connected with the omnidirectional antenna portion.
6. The sensing device of claim 1, wherein the underground sensor is a stainless steel armored contact sensor.
7. The detection device according to claim 1, wherein the waterproof housing is made of PVC or PMMA.
8. The detection device according to claim 1, wherein the underground sensor is a temperature sensor, a vibration sensor or a humidity sensor.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202021804922.5U CN212692941U (en) | 2020-08-26 | 2020-08-26 | Direct-buried cable damage prevention detection device based on wireless power transmission technology |
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| CN202021804922.5U CN212692941U (en) | 2020-08-26 | 2020-08-26 | Direct-buried cable damage prevention detection device based on wireless power transmission technology |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113945244A (en) * | 2021-11-09 | 2022-01-18 | 广东电网有限责任公司电力科学研究院 | Soil state monitoring device for direct-buried GIL fault early warning |
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2020
- 2020-08-26 CN CN202021804922.5U patent/CN212692941U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113945244A (en) * | 2021-11-09 | 2022-01-18 | 广东电网有限责任公司电力科学研究院 | Soil state monitoring device for direct-buried GIL fault early warning |
| CN113945244B (en) * | 2021-11-09 | 2023-04-25 | 广东电网有限责任公司电力科学研究院 | Soil state monitoring device for direct-buried GIL fault early warning |
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