Abstract:
A mapping apparatus and method in a mobile robot are provided to reflect change of surrounding conditions on the map by using a mobile robot to collect surrounding information. A conveyance part(120) conveys a mobile robot according to an input command. A distance measurement part(140) measures a distance from the mobile robot to an object positioned in the vicinity of the mobile robot. A mapping part(180) makes a map based on the measured distance. A mobile robot detector(150) compares a distance to an object of the map from the mobile robot, which is measured after mapping, with the measured distance of the distance measurement part after the map is made. The moving device detector detects the object based on the comparison result. An object movement detector(160) detects the movement state of the object in the area of the map. A controller(110) reflects changed information about surroundings to update the map.
Abstract:
An apparatus for detecting movement of attached connection unit is provided to measure pulled extent, direction and length of the attached connection unit such as a necklace or a cable. An apparatus for detecting movement of an attached connection unit includes a connection unit, and a length detection part(130). The connection unit has one end connected to an inner part of the apparatus, and the other end disposed to the outside of the apparatus through one side of the apparatus. The length detection part measures a length pulled out of the apparatus. The length detection part includes a rotary reel, and a rotary measurement part. The rotary reel is connected to one end of the connection unit, and wounds the connection unit. The rotary measurement part measures an extent of rotation of the reel when the connection unit is pulled, and measures a length in which the connection unit is pulled.
Abstract:
본 발명은 무선 센서 네트워크 기반 저전력 위치 인식 시스템 및 그 방법에 관한 것으로, 본 발명의 위치 인식 시스템은, 해당 위치에 부착되어 움직임을 감지하는 모션 센서; 상기 모션 센서가 부착되고 자신은 움직임이 가능한 물체에 부착되어, 상기 모션 센서의 움직임 감지 정보에 기초하여 상기 물체의 움직임 발생 여부를 판별하고, 그 결과에 따라 상기 물체의 위치산출용신호 전송을 위한 전원 모드를 동작 모드 및 슬립 모드로 선택적으로 전환하는 무선 네트워크 태그; 상기 물체의 움직임 발생에 따라 상기 동작 모드로 전환된 무선 네트워크 태그로부터 전송되는 위치산출용신호를 수신하고, 상기 수신한 위치산출용신호의 수신정보를 생성하여 출력하는 무선 네트워크 수신 센서; 및 상기 무선 네트워크 수신 센서로부터 출력되는 위치산출용신호의 수신정보에 기초하여 상기 물체의 위치를 산출하는 위치 인식 산출부를 포함하며, 이에 의해, 무선 네트워크 태그의 전력 소모를 최소화할 수 있다. 위치 인식 시스템, 모션 센서, 무선 센서 네트워크, 저전력, 측위 시스템
Abstract:
An apparatus and a method for detecting a location of a target are provided to enhance the efficiency and practicability of a wireless sensor network by detecting a location of a target without performing time synchronization. A tag transmits radiowaves(S310). A master node receives a signal 'a'(S320). When sensor nodes receive the radiowaves of the tag and transmit an acknowledgement signal, the master node receives and records the acknowledgement signal(signal 'b') of each sensor node(S330). The master node obtains a location of a target with the tag based on a time difference between the signal 'a' and the signal 'b'(S340).
Abstract:
A method for recognizing objects and measuring locations by using image information and a wireless sensor network and an apparatus thereof are provided to check efficiently and definitely location information of objects which exist in a set space. A method for recognizing objects and measuring locations comprises the following several steps. A wireless location recognizing system broadcasts specific signals over a space for detecting electronic tags existing over the space(S310). The wireless location recognizing system calculates approximate location information of objects to which the electronic tags are attached by using a wireless communication based location recognizing scheme like UWB(S320). The system compares the image captured via a camera with object information obtained via an ID of the object, and detects the corresponding object from the image(S330). The system measures location information of the detected object on the image and a distance from the camera to the object by using other special device and procedures(S340).