An acceleration transducer arranged in a rectangular coordinate system with three axes, whereby the three axes include a transverse axis, a longitudinal axis and a vertical axis, the acceleration transducer comprising:
- a main body defined in part by a first tangential side face, a second tangential side face, a third tangential side face, a fourth tangential side face, a first normal side face and a second normal side face, wherein each of the tangential side faces is arranged tangentially with respect to the vertical axis, and wherein each of the normal side faces is arranged normally with respect to the vertical axis;
- a first piezoelectric element defined in part by a first end face and a second end face disposed spaced apart from the first end face and parallel to the first end face, wherein the first end face lies in a first plane that is defined by the vertical axis and the longitudinal axis, wherein the second end face lies in a second plane that is defined by the vertical axis and the longitudinal axis and spaced apart along the transverse axis from the first plane, wherein the first piezoelectric element is further defined by a plurality of lateral surfaces, each of the plurality of lateral surfaces is disposed perpendicularly to each of the first end face and the second end face, each of the plurality of lateral surfaces mechanically connects the first end face to the second end face;
- wherein the first piezoelectric element is configured with a high sensitivity for a shear force acting along the longitudinal axis, a low sensitivity for a shear force acting along the vertical axis, and a low sensitivity for a normal force acting along the transverse axis, wherein the high sensitivity is at least five times greater than the low sensitivity;
- wherein the first piezoelectric element is secured by a material bond to the first tangential side face of the main body, wherein the material bond is an electrically insulating adhesive disposed between the piezoelectric element and the first tangential side face of the main body;
- a first seismic mass secured by material bonding to the first piezoelectric element so that upon an acceleration of the main body the first seismic mass exerts a shear force acting along the longitudinal axis on the main body onto the first piezoelectric element, which shear force is proportional to the acceleration acting on the main body, wherein the first piezoelectric element is configured to generate piezoelectric charges on the first and second end faces under the action of the shear force acting along the longitudinal axis;
- wherein the first seismic mass is secured to the first piezoelectric electric element in a manner to receive a shear force acting along the vertical axis and proportional to an acceleration acting on the main body and to exert a shear force proportional to the acceleration along the vertical axis onto the first piezoelectric element, wherein the first piezoelectric element is configured to generate piezoelectric interference charges on the first and second end faces under the action of the shear force acting along the vertical axis;
- wherein the first seismic mass is secured to the first piezoelectric electric element in a manner to receive a normal force acting along the transverse axis and proportional to an acceleration acting on the main body and to exert a normal force proportional to the acceleration along the transverse axis onto the first piezoelectric element, wherein the first piezoelectric electric element is configured to generate piezoelectric interference charges on the first and second end faces and on the plurality of lateral surfaces under the action of the normal force acting along the transverse axis;
- and
- wherein the piezoelectric interference charges generated on the first and second end faces essentially neutralize the piezoelectric interference charges generated on the plurality of lateral surfaces.