Industrial Technology Research Institute

National Yang Ming Chiao Tung University

Kuan-Chun Sun

Jwu-Sheng Hu

Cheng-Hua Wu

Meng-Ju Han

Sheng-Wen Lo

Cheng-hua Wu

Yi-jeng Tsai

A localization device using a magnetic field for positioning a moving object is provided. The localization device includes a magnetic landmark, a set of at least four tri-axes magnetic sensors mounted on the moving object, and a logic operation processing unit. The set of at least four tri-axes magnetic sensors forms four non-coplanar points in a three-dimension coordinate system. The logic operation processing unit is connected to the set of at least four tri-axes magnetic sensors. The set of at least four tri-axes magnetic sensors senses the magnetic field of the magnetic landmark and generates at least four magnetic signals transmitted to the logic operation processing unit.

Localization device using magnetic field and positioning method thereof

A method for positioning a device includes the steps of: estimating an absolute distance between a reference point and the device at each of a current time point and a number (N) of consecutive previous time points, where N is a integer smaller than n, n is a non-negative integer indicating a total number of time points since the device starting to move, and the current time point is defined as the (n)time point; estimating a unit vector of a movement direction of the device in each of (n&#x2212;N+1)to (n)time periods; and estimating a coordinate of a location of the device at (n)time point based on the absolute distance(s), the unit vector(s), and a coordinate of a location of the device at each of the number (N) of the consecutive previous time points.

Method for positioning a to-be-positioned device

An automatic guided vehicle includes a vehicle body and a positioning identification module which being furnished in the vehicle body further includes a three-axis magnetic signal sensing unit and a logic operation processing unit. The logic operation processing unit is connected to the three-axis magnetic signal sensing unit by signal transmitted therefrom. A magnetic pointer unit is furnished adjacent to the marching route of the automatic guided vehicle. The three-axis magnetic signal sensing unit senses the magnetic field of magnetic pointer unit and generates a magnetic field information that transmits to the logic operation processing unit.

Automatic guided vehicle and method for controlling the same

Growing community of inventors

Linnei Township, Taiwan

Kuan-Chun Sun