G01P 2015/0845

Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces {using solid seismic masses} with conversion into electric or magnetic values {being provided with a particular type of spring-mass-system for defining the displacement of a seismic mass due to an external acceleration using a plurality of spring-mass systems being arranged on one common planar substrate, the systems not being mechanically coupled and the sensitive direction of each system being different}