Multi-posture Stride Length Calibration System And Method For Indoor Positioning
A positioning system and positioning method technology, which can be used in the directions of measuring distance, mapping and navigation, instruments, etc., and can solve problems such as error accumulation and error.
Active Publication Date: 2014-06-25
IND TECH RES INST
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In addition, since the inertial navigation calculates the position based on the displacement and the heading, as the distance increases, the error will continue to accumulate. In addition, when used by different users, there is also the problem of error
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[0027] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in further detail below in conjunction with specific embodiments and with reference to the accompanying drawings.
[0028] figure 1 It is a schematic diagram of the architecture of the multi-attitude step correction positioning system of the present invention. Such as figure 1 As shown, the multi-attitude step correction positioning system of this embodiment is applied to a mobile device (mobile device), for example including smart phones, tablet computers, e-books, personal digital assistants (PDAs), electronic tags (Tag ), etc., can also cooperate with other servo devices, including at least one inertial sensing element 110, a signal pre-processing unit 120, a multi-attitude judgment unit 130, a step counting decision unit 140, a picture data feature correction unit 150, a Step counting threshold adjustment unit 160, and one step d...
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The present invention discloses a multi-posture stride length calibration system for indoor positioning which is suitable for a mobile device. The multi-posture stride length calibration system for indoor positioning includes: at least an inertial measurement unit, configured to sense at least a signal; a signal preprocessing unit, connected to the inertial measurement unit to process sensed signal; a multi-posture determination unit, configured to determine at least a posture based on processed signal; a step-computing decision unit, configured to compute a number of steps and a step frequency based on processed signal; a map feature calibration unit, configured to receive the number of steps, step frequency and posture to determined a stride length and decide whether the stride length matching a criterion; a step-computing threshold adjustment unit, configured to adjust a step-computing threshold if stride length not matching the criterion; and a stride length regression unit, configured to update a stride length regression curve for posture based on step frequency and stride length if stride length matching the criterion.
Description
technical field [0001] The invention relates to a multi-attitude step distance correction positioning system and method suitable for mobile devices. Background technique [0002] In recent years, consumer electronic products, such as mobile devices (including smart phones, tablet computers, etc.) are equipped with various types of sensing components to provide users with better application functions and brand-new experience, plus mobile positioning The development of technology in recent years, especially the mixed research and application of various technologies, has made personal navigation, social network sharing and LBS (Location-based Service) positioning information services, which have become new applications for smart phones and tablet computers. Focus, and bring great convenience to people. However, if consumers want to obtain real-time, correct and diverse navigation and positioning services indoors through mobile devices, how to achieve such requirements with sma...
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IPC IPC(8): G01C21/16
CPCG01C22/006G01C21/165G01C21/188G01C21/206
Inventor 姜仁杰冯坤齐何旭淜郭伦嘉
Owner IND TECH RES INST