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Positioning system and method for reducing ultrasonic signal conflict

A positioning system and positioning information technology, applied in the direction of positioning, radio wave measurement system, measurement device, etc., can solve the problem that the receiving end cannot make a correct judgment and the positioning information conflicts with each other, so as to optimize the transmission parameter setting, reduce the conflict, improve the The effect of positioning accuracy

Inactive Publication Date: 2011-08-17
PANASONIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in the TDOA method, if the positioning nodes transmit positioning information at the same time, it is easy to cause conflicts between positioning information, so that the receiving end cannot correctly judge

Method used

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  • Positioning system and method for reducing ultrasonic signal conflict
  • Positioning system and method for reducing ultrasonic signal conflict
  • Positioning system and method for reducing ultrasonic signal conflict

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Embodiment Construction

[0026] specific implementation

[0027] The method of the present invention will be described in detail below in terms of specific embodiments with reference to the accompanying drawings. In the master-slave positioning system based on TDOA, the hardware platform used in the present invention is a node with ultrasonic communication function and radio communication function, figure 1 A block diagram of the node is shown.

[0028] Such as figure 1 As shown, the node includes: a memory module 10 for storing data, a controller module 11 connected to the memory module, an ultrasonic communication module 13 for ultrasonic communication with the outside, a radio communication module 14 for radio communication with the outside, and a Analog signals from the ultrasonic communication module 13 and the radio communication module 14 are converted into digital signals and sent to the A / D conversion module 12 of the controller module 11 .

[0029] In order to realize the positioning of...

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Abstract

The disclosed positioning system comprises: multiple positioning nodes to send position information, ultrasonic signal and wireless signal to the following node, at least one receiving node to determine self position according to former signal, a CPU with a wireless communication device, an area division device to divide positioning nodes into some zones, and an ordering device to order nodes in one zone according to position relation.

Description

technical field [0001] The invention relates to indoor positioning technology, in particular to a positioning system and a method for reducing ultrasonic signal conflicts based on positioning node position information in the positioning system. Background technique [0002] Existing positioning systems, including GPS, mobile network positioning, etc., have been widely used, but the above technologies cannot be applied indoors. With the development of technology, indoor positioning technology has received extensive attention. The existing indoor positioning methods include using radio, ultrasonic, infrared, ultra-wideband and other media, using TOA (Time of Arrival), TDOA (Time Difference of Arrival), AOA (Angle of Arrival), RSSI (Received Signal Strength Indicator) and RSSI (Received Signal Strength Indicator) methods to implement positioning services. [0003] The present invention mainly discusses the master-slave positioning system. The status of nodes in this positioni...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S5/02G01S5/30G01S5/14G01S5/18G01S5/06G01S5/22
Inventor 余旭文魏强张玲
Owner PANASONIC CORP