CN217693725U

CN217693725U - Underground small-range wireless communication device based on wifi

Info

Publication number: CN217693725U
Application number: CN202221388892.3U
Authority: CN
Inventors: 陈家伟; 吴迪; 陈凡; 潘阳
Original assignee: Guilin University of Electronic Technology
Current assignee: Guilin University of Electronic Technology
Priority date: 2022-06-06
Filing date: 2022-06-06
Publication date: 2022-10-28
Anticipated expiration: 2032-06-06

Abstract

The utility model discloses an underground small-range wireless communication device based on wifi, which comprises a surface storage battery box and a hollow casing vertically arranged under the surface of the earth, wherein a hollow round pipe is vertically arranged in the casing, and the bottom end of the round pipe is inserted into the soil body at the bottom of the casing; wherein evenly be equipped with a N router from last to interval down in the hollow pipe, every router is fixed on the inner wall of pipe and is connected with earth's surface battery box, signal source through the data line, buries the wifi signal that sensor connection router launches in the soil body underground, and the soil body data transmission to the computer terminal on earth's surface that the sensor will gather. The device equipment is convenient, can let the sensor of burying in underground certain extent can receive stable wifi signal.

Description

Underground small-range wireless communication device based on wifi

Technical Field

The utility model relates to an underground communication equipment technical field specifically is an underground short range wireless communication device based on wifi.

Background

In the prior art, a sensor embedded in an underground monitoring soil body receives a wifi signal sent by an earth surface router and can normally work to transmit data to a computer terminal. However, the penetration force of wifi at the ground bottom is weak, and various sensors embedded in the ground bottom are difficult to receive wifi signals sent by a ground surface router due to the limited penetration range of wifi in soil, so that the sensors cannot transmit data to a computer terminal, and the detection of a soil body is seriously influenced.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome prior art's is not enough, and provide an underground narrow range wireless communication device based on wifi, the device equipment is convenient, can let the sensor of embedding in underground certain limit can receive stable wifi signal.

Realize the utility model discloses the technical scheme of purpose is:

a wifi-based underground small-range wireless communication device comprises a surface storage battery box and a hollow protective cylinder vertically arranged below the surface of the ground, wherein a hollow round pipe is vertically arranged in the protective cylinder, and the bottom end of the round pipe is inserted into a soil body at the bottom of the protective cylinder; wherein evenly be equipped with a N router from last to interval down in the hollow pipe, every router is fixed on the inner wall of pipe and is connected with earth's surface battery box, signal source through the data line, buries the wifi signal that sensor connection router launches in the soil body underground, and the soil body data transmission to the computer terminal on earth's surface that the sensor will gather.

The distance between adjacent routers of the N routers is 3-6m, and the wifi signal coverage range of each router is within 3m of a square circle with the router as the center.

The hollow circular tube is composed of a plurality of hollow cylindrical tubes which are sequentially connected in series, the outer wall of the top of each cylindrical tube is provided with an external thread, the inner wall of the bottom of each cylindrical tube is provided with an internal thread matched with the external thread, the adjacent cylindrical tubes are connected through threads, and the length of each hollow cylindrical tube is 2m.

The inner wall of the hollow circular tube is provided with a wire placing ring internally tangent with the inner wall, the outer diameter of the wire placing ring is smaller than the inner diameter of the hollow circular tube, a data wire connected with each router, an earth surface storage battery box and a signal source penetrates through the wire placing hole, the data wire is conveniently limited in the circular ring, the circuit is prevented from being wound, and other vacant spaces can be convenient for maintenance personnel to observe the condition of the circular tube.

The bottom end of the hollow circular tube is provided with a drill bit, and the drill bit is conical and is provided with an external thread, so that the hollow circular tube can be conveniently inserted into the soil body.

The protective cylinder and the round pipe are made of PVC materials.

The utility model provides a pair of secret small range wireless communication device based on wifi, the device has following advantage:

1. the device can let each sensor in the underground certain limit can both receive the wifi signal to make each sensor can normally work, stably transmit data to computer terminal.

2. The circular pipes of the device are sectional, but not a single long rod, the device is convenient to assemble, and the number of the cylindrical pipes can be adjusted according to the depth of the soil body to be detected and the embedding position of each sensor.

3. The device earth's surface is equipped with solar battery box, constantly provides the electric quantity for the router on the source, has solved the device's power supply problem, makes the router have sufficient power, and each sensor can work for a long time and transmit data, has realized stable permanent monitoring.

4. The device has the advantages of simple and convenient operation, convenient transportation, maintenance and low cost, and can be repeatedly used all the time.

5. The device material is PVC, and itself is very little to the shielding of wifi signal, and the wifi signal can stable transmission.

6. The device buries the pile casing before settling and can prevent the emergence of hole that collapses, and the drill bit of the pipe bottom of bottom can be used to prevent that the device from toppling over.

7. The device is internally provided with the wire placing ring, and the circuit is communicated through the wire placing ring, so that the problem of circuit winding cannot occur.

Drawings

FIG. 1 is a layout diagram of a wifi-based underground short-range wireless communication device;

FIG. 2 is a schematic diagram of a wifi-based underground short-range wireless communication device;

FIG. 3 is a cross-sectional view of a single cylindrical tube;

in the figure: 1. the ground storage battery box 2, the hollow circular tube 3, the protective cylinder 4, the ground 5, the underground soil body 6, the sensor 7, the wire placing ring 8, the router 9, the drill 10, the data wire 11, the external thread 12 and the internal thread.

Detailed Description

The present invention will be further explained with reference to the drawings and examples, but the present invention is not limited thereto.

Example (b): as shown in fig. 1, 2 and 3, the wifi-based underground small-range wireless communication device comprises a surface storage battery box 1 and a hollow casing 3 vertically arranged below the surface of the ground, wherein a hollow circular tube 2 is vertically arranged in the casing 3, and the bottom end of the circular tube 2 is inserted into soil at the bottom of the casing 3; wherein N routers 8 are uniformly arranged in the hollow circular tube 2 from top to bottom at intervals, each router 8 is fixed on the inner wall of the circular tube 2 and is connected with the earth surface storage battery box 1 and the signal source through a data line 10, the sensor 6 is buried in the underground soil 5 and connected with a wifi signal emitted by the router 8, and the sensor 6 transmits collected soil data to a computer terminal on the ground surface; the distance between adjacent routers 8 is 3-6m, and the wifi signal coverage of each router 8 is within a square circle 3m with the router 8 as the center; the protective cylinder 3 and the round pipe 2 are made of PVC materials.

The hollow circular tube 2 is composed of a plurality of hollow cylindrical tubes which are sequentially connected in series, the outer wall of the top of each cylindrical tube is provided with an external thread 11, the inner wall of the bottom of each cylindrical tube is provided with an internal thread 12 matched with the external thread 11, adjacent cylindrical tubes are connected through threads, and the length of each hollow cylindrical tube is 2m; when in use, the number of the cylindrical pipes can be adjusted according to the depth of the soil body.

2 inner walls of hollow pipe be equipped with the inscribe wire loop 7 of putting of its inner wall, the external diameter of putting wire loop 7 is less than hollow pipe 2 internal diameter, the data line 10 that every router 8 and earth's surface battery box 1, signal source are connected passes wire loop 7, is convenient for restrict data line 10 in the ring, prevents the circuit winding, other empty spaces of coming out, the condition of the pipe of maintainer observation of can being convenient for.

The bottom end of the hollow circular tube 2 is provided with a drill bit 9, the drill bit 9 is conical and is provided with an external thread, and the hollow circular tube is convenient to insert into the soil body.

The use method of the device comprises the following steps:

1) Determining the number of cylindrical pipes and the number of routers in proper quantity according to the depth of a soil body to be detected and the position of a sensor to be embedded, then performing artificial hole forming, and embedding a PVC (polyvinyl chloride) protective tube;

2) Fixing the routers on the inner wall of the cylindrical pipe by using glue, leading data wires out of each router to be connected with a power supply and a signal source on the ground surface, leading the data wires to pass through the wire placing ring, and then sequentially connecting the cylindrical pipe with the routers through threads;

3) The cylindrical pipe with the drill bit is arranged at the bottom, the drill bit is inserted into the soil body at the bottom in the protective cylinder, and the circular pipe is vertically arranged in the protective cylinder;

4) After the circuit is connected, a power supply is switched on, the device can form wifi coverage of a small range of ground bottom, each sensor can work normally, and collected data are transmitted to a computer terminal;

5) If when data acquisition is not needed, the power supply is cut off, the whole device is directly taken out, disassembled and placed, and the device can be repeatedly used.

Claims

1. A wifi-based underground small-range wireless communication device is characterized by comprising a surface storage battery box and a hollow casing vertically arranged below the surface of the ground, wherein a hollow circular tube is vertically arranged in the casing, and the bottom end of the circular tube is inserted into a soil body at the bottom of the casing; wherein evenly be equipped with a N router from last interval down in the hollow pipe, every router is fixed on the inner wall of pipe and is connected with earth's surface battery box, signal source through the data line, buries the wifi signal that sensor connection router launches in the soil body underground, and the sensor is with the soil body data transmission who gathers to the computer terminal on earth's surface.

2. A wifi-based underground short-range wireless communication device according to claim 1, characterized by that, the distance between the adjacent routers of N routers is 3-6m, and the wifi signal coverage of each router is within 3m of the square circle with the router as the center.

3. The wifi-based underground short-range wireless communication device according to claim 1, wherein the hollow circular tube is composed of a plurality of hollow cylindrical tubes connected in series in sequence, the outer wall of the top of each hollow cylindrical tube is provided with an external thread, the inner wall of the bottom of each hollow cylindrical tube is provided with an internal thread matched with the external thread, adjacent cylindrical tubes are connected through threads, and each hollow cylindrical tube is 2m long.

4. The wifi-based underground short-range wireless communication device according to claim 1, wherein a wire placing ring internally tangent to the inner wall of the hollow circular tube is arranged on the inner wall of the hollow circular tube, the outer diameter of the wire placing ring is smaller than the inner diameter of the hollow circular tube, and a data wire connected with a ground surface storage battery box and a signal source passes through the wire placing ring.

5. The wifi-based underground short-range wireless communication device as claimed in claim 1, wherein a drill is arranged at the bottom end of the hollow circular tube, and the drill is conical and has an external thread.

6. The wifi-based underground short-range wireless communication device according to claim 1, wherein the casing and the circular tube are made of PVC material.