An indoor positioning method and device
An indoor positioning and positioning technology, which is used in services based on specific environments, transmission monitoring, electrical components, etc., can solve problems such as low positioning accuracy, and achieve the goal of improving accuracy, improving accuracy, and reducing the possibility of floor misjudgment. Effect
Active Publication Date: 2022-03-29
山东亚华电子股份有限公司
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[0004] The embodiment of the present application provides an indoor positioning method and equipment, which solves the problem of low positioning accuracy of the existing RSSI-based indoor positioning system
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[0029] In order to make the purpose, technical solution and advantages of the present application clearer, the technical solution of the present application will be clearly and completely described below in conjunction with specific embodiments of the present application and corresponding drawings. Apparently, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.
[0030] In the case of an atrium or a hollow area indoors, since adjacent floors are relatively close to each other, and wireless signals can be transmitted directly through the hollow area, the signal attenuation is very small, making it difficult to distinguish adjacent floors, resulting in inaccurate floor positioning . In order to solve the above ...
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The present application discloses an indoor positioning method and equipment, including a positioning node receiving several signal strength RSSI values corresponding to each floor in several floors; A number of RSSI values; according to a number of RSSI values extracted from each floor, determine the inspection floor set corresponding to the positioning node; according to a number of RSSI values corresponding to each inspection floor in the inspection floor set, perform a significance test on the corresponding inspection floor to determine the positioning node Corresponding to the located floor: Based on the position coordinates of the target anchor point with the strongest RSSI value in the located floor, according to the algorithm of minimizing the objective function, determine the position coordinates of the positioning node. The invention realizes the determination of the located floor through the significance test, overcomes the shortcoming of floor jumping, and utilizes the position information and signal strength values of multiple anchor points by minimizing the objective function, thereby improving the positioning accuracy.
Description
technical field [0001] The present application relates to the technical field of wireless communication, and in particular to an indoor positioning method and device. Background technique [0002] Indoor positioning refers to the realization of position positioning in the indoor environment. It mainly adopts various technologies such as wireless communication, base station positioning, and inertial navigation positioning to form an indoor position positioning system. Indoor wireless positioning methods mainly include wireless network (Wi-Fi), Bluetooth, radio frequency identification (Radio Frequency Identification, RFID), ZigBee and so on. [0003] Because the signal strength RSSI value of the wireless signal received by the terminal is affected by the complex indoor environment, there is a large fluctuation, which affects the calculation of the terminal's accurate indoor location. Therefore, the existing positioning algorithm based on the signal strength RSSI value has lo...
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IPC IPC(8): H04W64/00H04W4/33H04B17/318
CPCH04W64/00H04W4/33H04B17/318
Inventor 任宪勇范国栋喻建锋孙国维侯霄宋瑞民
Owner 山东亚华电子股份有限公司