Measuring and testing – Dynamometers – Responsive to force
Patent
1994-06-22
1996-03-26
Chilcot, Richard
Measuring and testing
Dynamometers
Responsive to force
73DIG4, 29 2535, G01L 104
Patent
active
055011110
ABSTRACT:
The invention comprises a force measuring system and an assembly procedure for the dynamic determination especially of axle loads, speed, as well as for assembly of force and acceleration sensors. The force measuring system can be laid permanently in the roadway. It is of modular assembly, consisting of the amplifier, sensor and terminal module. The sensor module consists of a hollow section, in which piezo-elements are fitted under elastic preload. The hollow section is designed so that it can be opened elastically by lateral clamping, to allow mechanically interconnected piezo-elements to be inserted simply. After releasing this clamping, the piezo-elements are under high elastic preload. The same design principle can also be applied generally to force pressure and acceleration sensors. The elastical clamping force, vital for perfect force transmission to the piezo-elements, is for assembly purposes easily overcome by a proper lateral clamping force.
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Calderara Reto
Cavalloni Claudio
Sonderegger Hans C.
Chilcot Richard
Dougherty Elizabeth L.
Kistler Instrumente AG
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