2 results about "Step number" patented technology

The invention discloses a human motion state recognition method and device. The method comprises the steps that a three-axis acceleration sensor and a human body sign sensor are arranged in a wearable device; it is determined that a human body is in the walking state according to acceleration signals collected by the three-axis acceleration sensor, the number of walking steps of the human body is calculated, and the walking stride frequency is calculated according to the number of walking steps; the corresponding sign frequency in the walking process is calculated according to sign signals collected by the human body sign sensor; the calculated walking stride frequency and the sign frequency are compared with a stride frequency threshold value and a sign frequency threshold value, and when the walking stride frequency is larger than the stride frequency threshold value and the sign frequency is larger than the sign frequency threshold value, it is determined that the human body motion state is the running state, and the calculated walking step number is recorded as running step number; or, it is determined that the human body motion state is the walking state, and the calculated walking step number is recorded as the walking step number. According to the technical scheme, the human motion state recognition method and device can effectively distinguish the walking state and the running state of the walking state.

The invention relates to a map-free indoor navigation method and system based on densely arranged AP, which belongs to the field of navigation technology. According to the invention, data information about a user during indoor activities are acquired and recorded by a trace acquisition module; when navigation is needed, a data preprocessing module processes RSSI information acquired by a reference trace acquisition module and uses the processed information, acquired step numbers of the user and information of the rotation angle of the user as reference data; current location data information acquired by a navigation trace acquisition module is preprocessed and used as input data; and the input data is matched with the reference data in virtue of a matching module, and the system gives out corresponding navigation prompts according to different position states of the user. The map-free indoor navigation method and system provided by the invention make full use of the fact that wireless AP is extensively arranged and realize self navigation of the user without an indoor map or plane graph in virtue of a novel, simple and effective path matching algorithm.