Acceleration transducer

An acceleration transducer configured to detect a force acting in a rectangular coordinate system with three axes disposed orthogonally with respect to each other, and including a transverse axis, a longitudinal axis and a vertical axis, the acceleration transducer comprising:

• a main body defined 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 disposed tangentially with respect to the vertical axis, and wherein each of the normal side faces is disposed normally with respect to the vertical axis;
• a first piezoelectric electric 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 secured to the first tangential side face of the main body;
• a first seismic mass secured to the first piezoelectric electric element in a manner to receive a shear force acting along the longitudinal axis and proportional to an acceleration acting on the main body and to exert a shear force proportional to the acceleration along the longitudinal axis onto the first piezoelectric element, which 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, which 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;
• a first electrically conductive end face coating on the first end face of the first piezoelectric element, a second electrically conductive end face coating on the second end face of the first piezoelectric element, wherein each of the first and second electrically conductive end face coatings is configured to receive piezoelectric charges generated for the shear force acting along the longitudinal axis, wherein each of the first and second electrically conductive end face coatings is configured to receive piezoelectric interference charges generated for the shear force acting along the vertical axis;
• wherein the first piezoelectric element is further defined by a first lateral surface, a second lateral surface, a third lateral surface, and a fourth lateral surface, wherein each of the lateral surfaces lies in a plane that is disposed normal to the first end face and normal to the second end face;
• wherein the first seismic mass is attached to the first piezoelectric element in a manner exerting upon acceleration a normal force proportional to the acceleration and acting along the transverse axis onto the first piezoelectric element, which is configured to generate piezoelectric interference charges on the lateral surfaces of the first piezoelectric element under the action of the normal force acting along the transverse axis;
• and
• a first electrically conductive lateral coating configured to receive piezoelectric interference charges generated for the normal force along the transverse axis, wherein the first electrically conductive lateral coating covers a first area of the first lateral surface of the first piezoelectric element.