Abstract: In a particular embodiment, a force sensor apparatus is disclosed that includes a force-compliant element that deforms in response to forces applied to the force sensor apparatus. The apparatus also includes a sensing element coupled to the force-compliant element and is configured to generate a signal indicating the degree that the force-compliant element deforms in response to the applications of forces to the force sensor apparatus. In this embodiment, the apparatus also includes a printed circuit board configured to receive the signal from the sensing element and a support structure having a surface on which the printed circuit board is coupled. The support structure has an outer rim that is attached to the force-compliant element. The apparatus also includes a sensor housing that covers the printed circuit board. The sensor housing has an outer rim attached to the force-compliant element.

Abstract: In a particular embodiment, a force sensor apparatus is disclosed that includes a force-compliant element that deforms in response to forces applied to the force sensor apparatus. The apparatus also includes a sensing element coupled to the force-compliant element and is configured to generate a signal indicating the degree that the force-compliant element deforms in response to the applications of forces to the force sensor apparatus. In this embodiment, the apparatus also includes a printed circuit board configured to receive the signal from the sensing element and a support structure having a surface on which the printed circuit board is coupled. The support structure has an outer rim that is attached to the force-compliant element. The apparatus also includes a sensor housing that covers the printed circuit board. The sensor housing has an outer rim attached to the force-compliant element.

Abstract: A piezoresistive pressure-measuring plug for a combustion engine. The pressure-measuring plug includes a plug body having a threaded plug body part with an external thread for screwing the plug body into a cylinder of the combustion engine, and a sealing plug body part forming a tip of the plug for providing a seal between the plug body and the combustion engine. The plug body further includes a sensing body part positioned between the threaded plug body part and the sealing plug body part. The sensing body part includes a cylindrical body part, a moving part, and a sensing structure that form a single integral piece. The sensing structure forms a connection between the cylindrical body part and the moving part, and allows the moving part to move relatively to the cylindrical body part along a cylinder axis of the cylindrical body part.

Abstract: A pressure-measuring plug comprises a plug body and a sensing structure. The plug body comprises a threaded plug body part comprising an external thread for screwing the plug body into a cylinder of the combustion engine, a sealing plug body part forming a tip of the plug and configured for providing a seal between the plug body and the combustion engine. The plug body further comprises a sensing body part positioned between the threaded plug body part and the sealing plug body part. The sensing body part is made from one piece and comprises a cylindrical body part; a moving part and the sensing structure.