Abstract: A collision detection apparatus for a vehicle having a vehicle bumper, which includes a bumper reinforcement includes a chamber member, a pressure sensor, and a collision detecting device. The chamber member is provided inside the vehicle bumper at a front surface of the bumper reinforcement. The pressure sensor is configured to sense change of pressure in the chamber space. The chamber member includes a deformable part and a non-deformable part, each of which extends in a vehicle width direction. The deformable part is compressed to be deformed between the collision object and the bumper reinforcement in a case, where the collision object collides with the vehicle bumper. The non-deformable part is limited from being compressed to be deformed.

Abstract: A sensor arrangement (1) for a tachometric sensor of an automatic transmission (4) of a motor vehicle, which encompasses a module carrier (2) in which a part of a sensor housing (3) is integrated. The sensor housing (3) is secured in the module carrier (2) or in the transmission housing (4) by way of a guide in the plane and is so affixed as to prevent turning and an apparatus (5) for the generation of a prestress force by way of which the sensor housing (3) is pressed in the direction of the signal disk by way of a projection (8, 8?) acting against the sensor housing (3).

Abstract: A detection method of coating film thickness and an ion implantation equipment using the detection method. The detection method comprises providing on a surface of materials, such as disk (11) of a wafer support on which a coating film comprising a low conductive material, an electrical measurement sensor (18) having a coating film comprising the same material, and detecting thickness change of the coating film on the surface of the materials by irradiation with particle beams in the form of a signal from the sensor (18). The ion implantation equipment comprises an electrical measurement sensor provided on a disk and having a sample piece that forms a coating film of the same material as that of a surface coating of the disk, and means to monitor thickness change of the coating film by sensor signal from the measurement sensor.