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Indoor positioning method and device

An indoor positioning and signal transmission device technology, applied in the field of indoor positioning and indoor navigation, can solve problems such as interference, affecting measurement accuracy, and does not consider the reflection and refraction of transmitted signals, so as to reduce reflection, reduce positioning cost, and achieve high-precision positioning Effect

Active Publication Date: 2017-02-22
ZHEJIANG NORMAL UNIVERSITY
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Problems solved by technology

[0007] In the above method, since the interference factors such as reflection and refraction of the transmitted signal are not considered, the transmitted signal encounters obstacles, such as walls, glass, etc., and reflection phenomena will occur, resulting in the signal received by the position to be measured except for the direct signal of the transmitting source. Signals such as reflection and refraction will also be received, which will introduce interference and affect measurement accuracy
In addition, a variety of positioning methods, such as time of arrival (TOA), time difference of arrival (TDOA) and other positioning methods, both the transmitter and the receiver must achieve signal synchronization, which is limited in practical applications

Method used

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  • Indoor positioning method and device
  • Indoor positioning method and device

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Embodiment Construction

[0051] Below in conjunction with specific embodiment, further illustrate the present invention. It should be understood that these examples are only used to illustrate the present invention and are not intended to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art may make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined in the present application.

[0052] The present invention is an indoor positioning device, including a signal sending device 1, at least five LED lights 2, a photoelectric sensor 3, and a signal processing device 4,

[0053] The signal sending device 1 is used to control different LED lamps 2 to send out different light signals,

[0054] The photoelectric sensor 3 is used to convert the optical signal received at the position to be determined into an electrical signal, and...

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Abstract

The invention discloses an indoor positioning method and device and mainly relates to the technical field of indoor positioning and indoor navigation. The device comprises a signal sending device, at least five LED lamps, a photoelectric sensor and a signal processing device. The signal sending device is used for controlling different LED lamps to emit different light signals, the photoelectric sensor is used for converting the received light signals at to-be-detected positioning points into electric signals and transmitting the electric signals to the signal processing device, the signal processing device is used for obtaining coordinates of the photoelectric sensor, and the signal processing device comprises a phase measurement module and a plurality of paths of signal processing channels. The system and method have the advantages that indoor positioning is conducted through LED visible light, reflection, refraction and other signal interference can be reduced, and high-precision positioning can be achieved. Signals at the emission end and at the receiving end do not need to be synchronized, and positioning cost can be reduced.

Description

technical field [0001] The invention relates to the technical fields of indoor positioning and indoor navigation, in particular to an indoor positioning method and device. Background technique [0002] At present, there are many technical methods for positioning, such as GPS, Beidou, etc. These methods can only be used for outdoor positioning because there is no indoor signal. The indoor positioning methods include WLAN, WIFI, RFID, Zigbee, ultrasound, Bluetooth, etc. This type of method is susceptible to electromagnetic interference. When multiple users occupy the signal channel, the communication quality and propagation distance are all affected, which seriously affects the positioning accuracy. Indoor LED visible light has a good prospect in the field of indoor positioning due to its characteristics of wide coverage, energy saving, simple layout, low cost, no electromagnetic radiation, and few sources of interference. [0003] At present, there are many indoor positionin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S5/16
CPCG01S5/16
Inventor 陈希刘洋
Owner ZHEJIANG NORMAL UNIVERSITY
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