Indoor location method and indoor location system

An indoor positioning and current location technology, applied in the field of indoor navigation, can solve the problem of high deployment cost and achieve the effect of cost reduction

Active Publication Date: 2016-08-10
SHANGHAI ZHISHENG NETWORK TECH CO LTD
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Problems solved by technology

The disadvantage of this solution is that enough landmarks need to be deployed for positioning and measurement, and the landmarks n

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  • Indoor location method and indoor location system
  • Indoor location method and indoor location system
  • Indoor location method and indoor location system

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Embodiment Construction

[0033] In order to make the object, technical solution and advantages of the present invention clearer, various embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. However, those of ordinary skill in the art can understand that, in each implementation manner of the present invention, many technical details are provided for readers to better understand the present application. However, even without these technical details and various changes and modifications based on the following implementation modes, the technical solution claimed in each claim of the present application can be realized.

[0034] The first embodiment of the present invention relates to an indoor positioning method, such as figure 1 As shown, it specifically includes the following steps:

[0035] Step 101, the camera installed on the mobile robot takes pictures of the external environment. A rotatable pan-tilt can be deployed on the mobile ro...

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Abstract

The invention relates to the field of indoor navigation and discloses an indoor location method and an indoor location system. In the invention, vision road signs (artificial or natural road signs) are deployed in fixed indoor positions. During the location process, a movable robot photographs images from surrounding environment, wherein the images are subjected to pretreatment and character extraction. A characteristic image after the character extraction is matched with the road signs in a road sign character library to obtain a road sign which can be used for location in the image. Through a vision distance measurement scheme on the basis of the characteristic road sign, real-time location is carried to the movable robot. In the embodiment, with the vision road signs (passive road sign), the road sign itself does not emit a wireless signal and has low cost. Through the vision distance measurement scheme, only one road sign is required to deploy within in vision range of the robot, so that the method and the system need fewer road signs, thereby reducing deployment cost of indoor navigation.

Description

technical field [0001] The invention relates to the field of indoor navigation, in particular to an indoor positioning method and system. Background technique [0002] Indoor navigation has a wide range of applications in many fields, such as automatic path guidance of indoor mobile robots, automatic driving of automatic driving vehicles (AGVs) in the logistics industry, etc. [0003] There are many indoor navigation and positioning methods for mobile robots, and they mainly include: dead reckoning, absolute positioning and hybrid positioning. [0004] Among them, the dead reckoning algorithm uses various sensors equipped with the robot to obtain the current dynamic position information of the robot, and obtains the estimated position of the robot through a simple recursive accumulation formula. The commonly used sensors for dead reckoning generally include code discs and gyroscopes. , accelerometer, etc. By installing the code disc on the wheel of the robot, the number of...

Claims

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Application Information

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IPC IPC(8): G01C21/00G01C11/04
Inventor 包建飞徐和根
Owner SHANGHAI ZHISHENG NETWORK TECH CO LTD
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