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Underground positioning method based on compressed sensing RSS fingerprint database and ultrasonic waves

A technology of compressed sensing and positioning method, which is applied in the field of mine communication and safety production, which can solve problems such as limited bandwidth of mine communication network, time delay, and influence of real-time positioning, so as to simplify data transmission, reduce bandwidth occupation, and reduce work volume effect

Pending Publication Date: 2019-07-23
CHINA UNIV OF MINING & TECH (BEIJING)
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Problems solved by technology

However, the bandwidth of the mine communication network is limited and there is a delay in the transmission process, these factors have a negative impact on the real-time positioning

Method used

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  • Underground positioning method based on compressed sensing RSS fingerprint database and ultrasonic waves
  • Underground positioning method based on compressed sensing RSS fingerprint database and ultrasonic waves
  • Underground positioning method based on compressed sensing RSS fingerprint database and ultrasonic waves

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Embodiment Construction

[0028] In order to make the content and advantages of the technical solution of the present invention more clear, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0029] figure 1 It is a block diagram of the positioning method system of the present invention, including a ground monitoring system (1), a positioning computer (2), an optical fiber (3), a switch (4), a bus (5), a gateway (6), and a reference node (7) , target node (8). All the downhole equipment involved are intrinsically safe equipment, wherein the target node (8) is carried by downhole personnel or equipment.

[0030] like figure 1 As shown, the downhole positioning method based on the compressed sensing RSS fingerprint library and ultrasonic waves described in the present invention is as follows: the reference node (7) is arranged on both sides of the downhole roadway wall, receives the signal strength and time difference data transmitted by the ...

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Abstract

The invention discloses an underground positioning method based on a compressed sensing RSS fingerprint database and ultrasonic waves in the field of mine communication and safety production. The method simplifies the complexity of a positioning algorithm, reduces the number of underground nodes, and reduces the power consumption. A compressed sensing algorithm is adopted, the number of referencenodes and the data transmission amount are reduced, and the bandwidth pressure of a mine communication network is relieved. Based on the spatial characteristics of a mine laneway, a simpler fingerprint database collection scheme is adopted, and an ultrasonic ranging technology is combined, so that the positioning precision is ensured, the workload of the fingerprint database collection stage is reduced, and the implementation of underground target positioning is more convenient.

Description

technical field [0001] The invention belongs to the fields of mine communication and safe production, and relates to an underground positioning method based on compressed sensing RSS fingerprint library and ultrasonic waves. Background technique [0002] Underground target positioning is an important content of coal mine underground research topics, and it is of great significance to the safety of underground personnel and equipment placement. There are various methods for downhole target positioning, and some methods are based on ranging. Among them, there are two commonly used ranging methods: one is based on detecting the received signal strength (Received Signal Strength, RSS) ranging method; the other is based on transmission arrival The ranging method of Time of Arrival (TOA) and Time Difference of Arrival (TDOA). In addition, there are some methods based on non-ranging, such as feature fingerprint library and so on. [0003] For underground target positioning, it is...

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Application Information

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IPC IPC(8): H04W4/02H04W4/30G01S5/02
CPCH04W4/023H04W4/30G01S5/0257Y02D30/70
Inventor 刘晓阳康健杨超顼文钰易聪
Owner CHINA UNIV OF MINING & TECH (BEIJING)
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