A Hybrid Positioning System for Indoor Navigation on Mobile Phones using Panoramic Images

Aimed at the problem that experimental verifications are difficult to execute due to lacking effective experimental platforms in the research field of multi-robot formation, we design a simple multi-robot formation platform. This proposed general and low-cost multi-robot formation platform includes the indoor global-positioning system, the multi-robot communication system, and the wheeled mobile robot hardware. For each wheeled mobile robot in our platform, its real-time position information in the centimeter‑level precise is obtained by the Marvelmind Indoor Navigation System and orientation information is obtained by the six-degree-of-freedom gyroscope. The Transmission Control Protocol/Internet Protocol (TCP/IP) wireless communication infrastructure is selected to support the communication among robots and the data collection in the process of experiments. Finally, a set of leader–follower formation experiments are performed by our platform, which include three trajectory tracking experiments of different types and numbers under deterministic environment and a formation-maintaining experiment with external disturbances. The results illustrate that our multi-robot formation platform can be effectively used as a general testbed to evaluate and verify the feasibility and correctness of the theoretical methods in the multi-robot formation. What is more, the proposed simple and general formation platform is beneficial to the development of platforms in the fields of multi-robot coordination, formation control, and search and rescue missions.

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Exploring Personal Mobile Phones and Digital Display Systems to Support Indoor Navigation by Formative Study Methods

International Journal of Handheld Computing Research ◽

10.4018/jhcr.2010070103 ◽

2010 ◽

Vol 1 (3) ◽

pp. 32-50 ◽

Cited By ~ 1

Author(s):

Faisal Taher ◽

Keith Cheverst ◽

Mike Harding

Keyword(s):

Mobile Phone ◽

Mobile Phones ◽

Support Services ◽

Digital Technology ◽

Research Study ◽

Indoor Navigation ◽

Digital Display ◽

Significant Difference ◽

Display Systems ◽

Access Services

A significant difference exists between wayfinding support services available in outdoor and indoor locations. Users in outdoor locations can access services like Google Maps via a mobile phone and in-car GPS, which allows them to examine unknown locations before arrival as well as receive assistance en-route. In contrast, there is relatively little digital wayfinding support for users in indoor locations, where users are limited to using in-building signage or asking for directions. However, advances in pervasive digital technology allow new possibilities and make this topic increasingly subject to research study. This paper describes three separate formative studies involving 24 participants using personal mobile phones, a situated display deployment and a Person Locator Kiosk. The authors present their findings by gaining feedback and insights from users to develop useful and usable wayfinding support for visitors in an in-building environment.

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Taxi Intelligent Dispatch System Based on GPS

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.742.463 ◽

2013 ◽

Vol 742 ◽

pp. 463-468

Author(s):

Zhong Min Yao ◽

Zhao Peng Long ◽

Qiang Li

Keyword(s):

Mobile Phones ◽

Time Complexity ◽

Scheduling Algorithm ◽

Scheduling Algorithms ◽

Experimental Results ◽

Positioning System ◽

Traffic Jam ◽

Gps Positioning ◽

Dispatch System ◽

Intelligent Scheduling

GPS positioning system is installed in taxis and most mobile phones support GPS positioning function at present. GPS phones are used in the taxi to achieving intelligent scheduling based on this basis. The taxi intelligent dispatch system based on GPS is proposed, improve the traditional Dijkstra scheduling algorithms by setting taxi maximum reasonable scheduling range, experimental results show that improved algorithms reduce the time complexity and improve scheduling efficiency. Meanwhile the traffic jam information can be sent to the dispatch center and make scheduling algorithm more reasonable by combined with above information.

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