Hollow profile for WIM sensor and WIM sensor with hollow profile
AssigneeKistler Holding AG
InventorAdrian Ribi
Life of this patent
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Abstract
A hollow profile for a WIM sensor elongates along a longitudinal direction and includes a plate-shaped force introduction element, an anchoring element and a tubular element disposed between the force introduction element and the anchoring element. The tubular element is integrally connected to the force introduction element and to the anchoring element and encloses a first cavity. The anchoring element encloses at least one second cavity. The anchoring element, tubular element and force introduction element are formed integrally with each other.
Claims15
A hollow profile for a WIM sensor, the hollow profile defining a longitudinal direction, a height direction that is orthogonal to the longitudinal direction, and a width direction that is orthogonal to both the longitudinal direction and the height direction, the hollow profile comprising:
- a force introduction element that is elongated along the longitudinal direction;
- an anchoring element that is elongated along the longitudinal direction;
- a tubular element that is elongated along the longitudinal direction and arranged between the force introduction element and the anchoring element and enclosing a first cavity, wherein the tubular element is integrally connected to the force introduction element and to the anchoring element, and wherein the anchoring element, the tubular element and the force introduction element are formed integrally with each other;
- and
- wherein the anchoring element encloses a second cavity that is disposed spaced apart in the height direction from the first cavity and aligned with the first cavity along the height direction.
A WIM sensor mounted in a roadway, the WIM sensor comprising:
- a hollow profile that includes:
- a force introduction element that is plate-shaped and elongated along a longitudinal direction;
- an anchoring element that is elongated along the longitudinal direction;
- a tubular element that is elongated along the longitudinal direction and arranged between the force introduction element and the anchoring element and enclosing a first cavity, wherein the tubular element is integrally connected to the force introduction element and to the anchoring element, and wherein the anchoring element, the tubular element and the force introduction element are formed integrally with each other;
- and
- wherein the anchoring element encloses a second cavity that defines an internal space, wherein the second cavity is disposed spaced apart in the height direction from the first cavity and aligned with the first cavity along the height direction;
- a force sensor is arranged in the tubular element of the hollow profile;
- wherein under an action of an external force onto the force introduction element a flow of forces through the force introduction element acts on the tubular element, wherein the tubular element defines a tube wall that is configured to lie in a secondary force path of the flow of forces when the force sensor lies in a main force path of the flow of forces;
- wherein the component of the force acting in the main force path acts on the force sensor;
- and wherein the second cavity is configured to change the force acting onto the force sensor by less than 1% as compared to a WIM sensor comprising a plate-shaped anchoring element without a cavity.
A WIM sensor mounted in a roadway, the WIM sensor comprising:
- a hollow profile that includes:
- a force introduction element that is plate-shaped and elongated along a longitudinal direction;
- an anchoring element that is elongated along the longitudinal direction;
- a tubular element that is elongated along the longitudinal direction and arranged between the force introduction element and the anchoring element and enclosing a first cavity, wherein the tubular element is integrally connected to the force introduction element and to the anchoring element, and wherein the anchoring element, the tubular element and the force introduction element are formed integrally with each other;
- and
- wherein the anchoring element encloses a second cavity that defines an internal space;
- a force sensor is arranged in the tubular element of the hollow profile;
- an electrical energy storage device disposed in the second cavity;
- and
- wherein under an action of an external force onto the force introduction element a flow of forces through the force introduction element acts on the tubular element, wherein the tubular element defines a tube wall that is configured to lie in a secondary force path of the flow of forces when the force sensor lies in a main force path of the flow of forces;
- wherein the component of the force acting in the main force path acts on the force sensor;
- and wherein the second cavity is configured to change the force acting onto the force sensor by less than 1% as compared to a WIM sensor comprising a plate-shaped anchoring element without a cavity.
Dependencies are inferred from the claim text.