Container position measuring method and container position measuring apparatus
AssigneeNihon Engineering Co., Ltd.
InventorsTadashi Kato, Shoichi Kato
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Abstract
A container position measuring method using a microwave sensor 31 which emits microwave 35 and receives reflected wave of the microwave 35, wherein a position of a corner portion of a transportation container is measured by reflected wave from the corner portion. The microwave 35 is not influenced by weather and color of a transportation container 18. Therefore it is possible to reliably measure position data of the transportation container. The microwave 35 does not easily receive the influence of weather and color of the transportation container. The present invention provides a position measuring method capable of stably measure position data of the transportation container.
Claims7
A container position measuring method using a microwave sensor which emits microwave and receives reflected wave of the microwave, wherein a position of a corner portion of a transportation container is measured by reflected wave from the corner portion,
- wherein when a range in which a gain becomes 50% with respect to a center of the emitted microwave is defined as a directivity angle P of an antenna of the microwave sensor, an offset angle Q between a flat surface of the transportation container and microwave of the microwave sensor is in a range of 1.5×P<Q<90−(1.5×P).
A container position measuring method in which a microwave sensor which emits microwave and receives reflected wave of the microwave is used, the microwave is emitted such that the microwave is offset by predetermined angle from a direction perpendicular to a flat surface of a transportation container, and a position of the flat surface of the transportation container is measured by reflected wave from the flat surface, wherein when a range in which a gain becomes 50% with respect to a center of the emitted microwave is defined as a directivity angle P of an antenna of the microwave sensor, the offset angle R is in a range of 1<R<1.5×P.
Dependencies are inferred from the claim text.