A Sound-Based Method for Locating the Falling Point of Objects

A positioning method and object technology, applied in the field of location services, can solve the problems of being easily interfered by other signals and noises, unable to be used normally, and poor in civilian popularity, and achieve the effect of good scalability.

Active Publication Date: 2021-08-17
XIJING UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, Bluetooth communication and WiFi technology are related to the network coverage radius, the signal transmission range is limited, and it is easily interfered by other signals and noise; because light cannot pass through obstacles, infrared technology can only transmit at the line of sight, once encountering obstacles, Infrared technology cannot be used normally; radar tracking technology is generally widely used in military equipment, the cost is relatively high, and the popularity of civilian use is relatively poor

Method used

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  • A Sound-Based Method for Locating the Falling Point of Objects
  • A Sound-Based Method for Locating the Falling Point of Objects

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Embodiment Construction

[0023] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0024] The present invention is based on the method for locating the falling point of an object based on sound, and the specific workflow is as follows: figure 1 As shown, after the system is powered on and running, the aggregation node first initiates a networking command, and each beacon node builds a network according to the protocol. The server configures the parameters of the system, packs the set parameters into a control data frame and sends it to the sink node; the sink node parses the command and distributes it to each beacon node. After the parameter setting is completed, the server sends a clock synchronization command to the sink node; the sink node broadcasts the clock synchronization command to the network, and each beacon node receives the command, delays a fixed time to start the sound collection, signal processing, TOA estimation and other pr...

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Abstract

The invention discloses a sound-based method for locating the falling point of an object, which locates the place where an effective event occurs in a space composed of a converging node and eight beacon nodes; the invention uses nRF24L01 to realize high-precision clock synchronization, Each beacon node realizes clock synchronization by following the instructions of the sink node; the relative coordinate system is constructed through the layout of each node, and each node can be randomly arranged; each node performs event recognition and arrival time estimation on the collected sound locally; each node The wireless network is established through nRF24L01, and the data is sent to the server through the wireless network; the server receives the arrival time data of the beacon node, and uses the least squares-based TDOA positioning algorithm to locate and display effective events.

Description

technical field [0001] The invention relates to the technical field of location services, in particular to a sound-based method for locating the falling point of an object. Background technique [0002] At present, existing methods for locating objects mainly locate objects through Bluetooth communication, WIFI technology, infrared technology, and radar tracking technology. Among them, Bluetooth communication and WiFi technology are related to the network coverage radius, the signal transmission range is limited, and it is easily interfered by other signals and noise; because light cannot pass through obstacles, infrared technology can only transmit at the line of sight, once encountering obstacles, Infrared technology cannot be used normally; radar tracking technology is generally widely used in military equipment, the cost is relatively high, and the popularity of civilian use is relatively poor. Contents of the invention [0003] In order to overcome the deficiencies o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W4/02H04W4/06H04W4/33H04W4/38H04W56/00H04W64/00
Inventor 赵巧绒张磊李勇强李兵强
Owner XIJING UNIV
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