CN212851027U

CN212851027U - Underground coal mine personnel information acquisition system

Info

Publication number: CN212851027U
Application number: CN202021968891.7U
Authority: CN
Inventors: 陈旗; 辜小斌; 徐莹鑫
Original assignee: Shandong Tianyuan New Material Technology Co ltd
Current assignee: Shandong Tianyuan New Material Technology Co ltd
Priority date: 2020-09-10
Filing date: 2020-09-10
Publication date: 2021-03-30
Anticipated expiration: 2030-09-10

Abstract

The utility model discloses a colliery personnel information acquisition system in pit, include: a beacon worn on a person downhole or affixed to an asset item; the base station receives the beacon signal and carries out positioning based on an angle-of-arrival positioning technology; a switch for powering the base station and providing data communication; the gateway is used for connecting the switch and the control terminal; and the control terminal is used for displaying the position of the beacon. The utility model discloses an adopt the arrival angle technique to fix a position the beacon, only need single location basic station can carry out the two dimension location, and three-dimensional location can be realized to two basic stations of installation, and the beacon also can be compatible to current cell-phone, bracelet in, builds with low costsly. In addition, the arrival angle positioning technology can improve the positioning precision to the centimeter level, and meets the requirement of underground coal mine positioning.

Description

Underground coal mine personnel information acquisition system

Technical Field

The utility model relates to a location technology in the colliery especially relates to a colliery personnel information acquisition system in pit.

Background

The personnel positioning system has become one of the most important systems in the 'six systems' of the coal mine, and the positioning of the moving target has important significance for realizing the fine management of the personnel in the coal mine and guaranteeing the production safety, and is the key for realizing the premise of personnel perception, the basis of equipment perception and disaster perception. In daily management of mines, managers need to master the on-duty conditions of all posts, so that on one hand, the managers can know the working progress and on the other hand, the managers can provide convenience for disaster relief work. However, since underground workers such as mines have high mobility, it is difficult to accurately know the location of the workers once they have gone down the well.

There are three main positioning methods in common use at present:

(1) the positioning system based on Radio Frequency Identification (RFID) technology has wide application, but the positioning precision of the positioning system is limited by the distribution density of a reader-writer, so that only regional positioning can be realized, dynamic real-time accurate positioning cannot be performed, and once a mine disaster occurs, the specific position of a mine disaster person cannot be accurately positioned.

(2) The positioning system estimates the position of an object to be positioned by using the ID of a Cell, namely a serving base station where the object to be positioned is located, wherein the Cell ID is unique all over the world, and the position of the object to be positioned is mainly determined by the ID of the Cell and the Cell coverage range. The Cell ID realization principle is simple, the positioning terminal is not required to be changed, the complex signal characteristic value is not required to be measured, only small improvement is needed to be made on the network side, and the positioning process is increased, so that the method is the simplest method in the current wireless positioning technology. However, the technology locates the position of the user by identifying the cell where the user is located, and the location accuracy is usually in the order of the number of cell radii, which is about 200 to 300 meters, and is very low. In addition, due to the special environment of the underground roadway, such as wireless signal multipath propagation, signal fading is large, and line-of-sight propagation is difficult, the technology is not suitable for accurate positioning of the underground coal mine.

(3) A positioning system based on Received Signal Strength (RSSI) is a main positioning method adopted by Zigbee and WiFi networks at present, and the distance between a mobile node and a transmission branch station is calculated according to the propagation loss type of a wireless Signal. The RSSI positioning method is simple and easy to implement. However, the propagation loss model of the wireless signal is greatly affected by the environment, so that the general RSSI positioning system usually has to rely on increasing the density of the transmission substations and controlling the positioning error in one direction by the global optimization algorithm, but the linear environment formed by the multidimensional tunnel in the underground environment cannot obtain the field intensity data in other directions on the plane, so that when the tunnel has factors such as a large metal shelter and the like which have inferior influence on the transmission of the wireless signal, the positioning error is large.

In the prior art, patent CN201420027965.5 discloses a coal mine personnel positioning system, which includes a positioning server, a plurality of bluetooth base stations, a plurality of groups of bluetooth tags and bluetooth positioning devices, the coal mine personnel carry with the bluetooth positioning devices, the bluetooth tags and the bluetooth base stations are all located in the underground working area of the coal mine, each group of bluetooth tags has their signal ranges all adjacent to at least one of the signal ranges of the bluetooth base stations, and the bluetooth base stations are connected to the positioning server through a transmission network. The system needs to arrange a plurality of Bluetooth positioning tags as emission sources of position signals, and has the problems of high construction cost and insufficient precision.

Disclosure of Invention

An object of the utility model is to provide a colliery personnel information acquisition system in pit that positioning accuracy is high, the construction cost is low.

The following presents a simplified summary of one or more aspects in order to provide a basic understanding of such aspects. This summary is not an extensive overview of all contemplated aspects, and is intended to neither identify key or critical elements of all aspects nor delineate the scope of any or all aspects. Its sole purpose is to present some concepts of one or more aspects in a simplified form as a prelude to the more detailed description that is presented later.

According to the utility model discloses an aspect provides a colliery personnel information acquisition system in pit, include: the base station receives the beacon signal and carries out positioning based on an arrival angle positioning technology; a switch for powering the base station and providing data communication; the gateway is used for connecting the switch and the control terminal; and the control terminal is used for displaying the position of the beacon.

In one embodiment, the beacon and the base station of the underground coal mine personnel information acquisition system are communicated and positioned through a 2.4GHz frequency band.

In an embodiment, the gateway of the system for collecting the information of the underground personnel of the coal mine is a 5G gateway, and the switch is an industrial Ethernet switch.

In one embodiment, the switches of the coal mine underground personnel information acquisition system form a ring network and are connected to the 5G gateway in a dual-homing mode.

In one embodiment, the control terminal of the coal mine underground personnel information acquisition system comprises a local computer and a 5G base station, and the local computer and the 5G base station are in signal connection with the gateway.

In one embodiment, the beacon of the system for collecting the information of the underground personnel of the coal mine comprises a Bluetooth communication module.

In one embodiment, the Bluetooth communication module of the underground coal mine personnel information acquisition system is an HC-42 Bluetooth serial port communication module.

In an embodiment, the beacon of the system for acquiring the information of the underground personnel in the coal mine is a bracelet, a mobile phone, a smart watch or a safety helmet.

In an embodiment, the beacon of the system for acquiring the information of the underground personnel in the coal mine further comprises a heartbeat/heart rate detection device, a respiratory rate detection device and/or a body temperature detection device.

In one embodiment, the beacon of the underground coal mine personnel information acquisition system is provided with a one-key alarm button.

The embodiment of the utility model provides a beneficial effect is: the beacon is positioned by adopting the angle of arrival technology, two-dimensional positioning can be carried out only by a single positioning base station, three-dimensional positioning can be realized by installing two base stations, the beacon can be compatible to the existing mobile phone and bracelet, and the construction cost is low. In addition, the arrival angle positioning technology can improve the positioning precision to the centimeter level, so that the requirement of underground positioning of a coal mine can be met.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

The above features and advantages of the present invention will be better understood upon reading the detailed description of embodiments of the present disclosure in conjunction with the following drawings. In the drawings, components are not necessarily drawn to scale, and components having similar relative characteristics or features may have the same or similar reference numerals.

FIG. 1 is a system block diagram of an embodiment of the present invention;

fig. 2 is a schematic circuit diagram of a beacon bluetooth communication module according to an embodiment of the present invention;

fig. 3 is a schematic diagram of a voltage regulation circuit of a beacon according to an embodiment of the present invention;

fig. 4 is a schematic diagram of a level shift circuit of a beacon according to an embodiment of the present invention;

wherein: 1-a beacon; 2-a base station; 3-a switch; 4-a gateway; 5-local computer; 6-5G base stations.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. It is noted that the aspects described below in connection with the figures and the specific embodiments are only exemplary and should not be understood as imposing any limitation on the scope of the present invention.

As shown in FIG. 1, the embodiment of the utility model discloses colliery personnel information acquisition system in pit, include: the system comprises a beacon 1, a base station 2, an exchanger 3, a gateway 4 and a control terminal, wherein the beacon 1 is worn on a person in the well or fixed on an asset article, the base station 2 is used for receiving a beacon signal and positioning based on an Angle of Arrival positioning technology (Angle of Arrival), the exchanger 3 is used for supplying power to the base station 2 and providing data communication, the gateway 4 is used for connecting the exchanger 3 and the control terminal, and the control terminal is used for displaying the position information of the beacon 1.

The system locates the beacon by adopting the angle of arrival technology, two-dimensional location can be carried out only by a single location base station, three-dimensional location can be realized by installing two base stations, the beacon can be compatible to the existing mobile phone and bracelet, and the construction cost is low. In addition, the arrival angle positioning technology can improve the positioning accuracy to the centimeter level, and can meet the high-accuracy requirement of coal mine underground positioning.

The method for positioning the angle of arrival is well established, and reference is made to related patent CN 104363655B. Compared with the prior art, the arrival angle positioning method does not need complex calculation, and can complete positioning only by one base station, so that the cost can be saved, the method is suitable for an underground long and narrow roadway environment, and support is provided for dynamic positioning and continuous observation of nodes. Compare in UWB location technique, the utility model discloses the BLE AoA technique that adopts all has the advantage in each side contrast UWB such as precision, consumption, cover, compatibility.

Preferably, the beacon 1 and the base station 2 communicate and position through a 2.4GHz frequency band, the anti-interference effect is obvious, and the method can be applied to various complex production environments.

Furthermore, in a possible embodiment, the gateway 4 is a 5G gateway, enabling low latency backhaul. The switch 3 is an industrial ethernet switch, and as shown in fig. 1, a plurality of switches 3 form a ring network and are connected to the 5G gateway in a dual-homing manner, so that the reliability of the whole system is improved.

The control terminal can comprise a local computer 5 and a 5G base station 6, and the local computer 5 and the 5G base station 6 are in signal connection with the gateway. Preferably, the system adopts a B/S Web architecture, so that the system can be deployed quickly and accessed through a browser of a control terminal. Meanwhile, the system provides various application development interfaces and supports data docking with various systems, including various applications such as real-time positions, historical tracks, events and messages, big data and reports. In addition, the local computer 5 end can be set to have a 3D display effect, so that the position information of people can be visually known.

Beacon 1 communicates with base station 2 through bluetooth communication module, and bluetooth communication module also plays the effect of orientation module simultaneously. In a possible embodiment, the bluetooth communication module is an HC-42 bluetooth serial communication module as shown in fig. 2. The HC-42 Bluetooth serial port communication module is a new generation data transmission module based on Bluetooth specification V5.0BLE Bluetooth protocol. The wireless working frequency band is 2.4GHzISM, and the modulation mode is GFSK. The maximum transmit power of the module was 4dBm, and the receive sensitivity was-96 dBm.

In addition, the beacon 1 may further include a level shift chip max3232 shown in fig. 4 and a voltage adjustment chip XC6206P332MR shown in fig. 3. max3232 uses a proprietary low dropout transmitter output stage, with a true RS-232 performance achieved with a dual charge pump when powered from a 3.0V to 5.5V supply, the device requiring only four external small size charge pump capacitors of 0.1 uF. The voltage regulation chip XC6206P332MR is a high-precision, low-power consumption, 3-pin LDO (low dropout regulator) high-voltage regulator chip and adopts a CMOS (complementary metal oxide semiconductor) process and a laser trimming technology. Under the condition of larger output current, the input-output voltage difference can be small. By adopting the structure, the endurance time of the beacon 1 using the button battery can reach 2 years, while the service time of the existing UWB beacon is only about 1 week to 1 month generally.

When the beacon 1 is worn on the body of a person in the pit, the beacon can be a mobile terminal such as a bracelet, a mobile phone and a smart watch, and can also be arranged on equipment such as a safety helmet. On the basis, the beacon 1 can further comprise a heartbeat/heart rate detection device, a breathing rate detection device and/or a body temperature detection device, so that the body state information of people can be monitored while the position information is obtained, and assistance is provided for rescue. Preferably, a one-key alarm button is further arranged on the beacon 1 to realize the emergency return.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

The previous description of the disclosure is provided to enable any person skilled in the art to make or use the disclosure. Various modifications to the disclosure will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other variations without departing from the spirit or scope of the disclosure. Thus, the disclosure is not intended to be limited to the examples and designs described herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

The above description is only a preferred example of the present application and should not be taken as limiting the present application, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present application should be included in the scope of the present application.

Claims

1. A coal mine underground personnel information acquisition system is characterized by comprising:

a beacon worn by a downhole person;

the base station receives the beacon signal and carries out positioning based on an angle-of-arrival positioning technology;

a switch for powering the base station and providing data communication;

the gateway is used for connecting the switch and the control terminal;

and the control terminal is used for displaying the position of the beacon.

2. The system for collecting information of underground coal mine personnel according to claim 1, which is characterized in that: and the beacon and the base station communicate and position through a 2.4GHz frequency band.

3. The system for collecting information of underground coal mine personnel according to claim 1, which is characterized in that: the gateway is a 5G gateway, and the switch is an industrial Ethernet switch.

4. The system for collecting information of underground coal mine personnel according to claim 3, characterized in that: the switches form a ring network and are connected to the 5G gateway in a dual-homing mode.

5. The system for collecting information of underground coal mine personnel according to claim 1, which is characterized in that: the control terminal comprises a local computer and a 5G base station, and the local computer and the 5G base station are in signal connection with the gateway.

6. The system for collecting information of underground coal mine personnel according to claim 1, which is characterized in that: the beacon comprises a Bluetooth communication module.

7. The system for collecting information of underground coal mine personnel according to claim 6, which is characterized in that: the Bluetooth communication module is an HC-42 Bluetooth serial port communication module.

8. The system for collecting information of underground coal mine personnel according to claim 1, which is characterized in that: the beacon is a bracelet, a mobile phone, a smart watch or a safety helmet.

9. The system for collecting information of underground coal mine personnel according to claim 8, characterized in that: the beacon also includes a heartbeat/heart rate detection device, a respiratory rate detection device, and/or a body temperature detection device.

10. The system for collecting information of underground coal mine personnel according to claim 1, which is characterized in that: the beacon is provided with a one-key alarm button.