Abstract: Device for determining displacement, the device comprising at least two substantially parallel plates located at a distance from each other. The device is arranged to determine a displacement of at least two predetermined parts of each of the plates with respect to each other and the displacement are directed substantially perpendicular to a main surface of the plates, wherein the displacement is a result of bending of the plates. The device comprises at least one sensor for measuring the displacement.

Abstract: The invention provides a method for preparing a conductive strain sensor on the surface of a device to measure strain at the surface of the device, which method comprises the steps of (a) providing a device; (b) optionally applying an isolating layer on a surface of the device; (c) establishing a distribution of particles of a first metal on the isolating layer obtained in step (b); and (d) depositing a layer of a second metal on at least part of the distribution of the particles of the first metal as obtained in step (c) by means of an electroless plating process or electro-deposition process.

Abstract: Device for determining displacement, the device comprising at least two substantially parallel plates located at a distance from each other. The device is arranged to determine a displacement of at least two predetermined parts of each of the plates with respect to each other and the displacement are directed substantially perpendicular to a main surface of the plates, wherein the displacement is a result of bending of the plates. The device comprises at least one sensor for measuring the displacement.

Abstract: The invention relates to a bicycle lock (1), comprising locking means (5,8) for locking a bicycle (10), and releasing means (6) for removing the locking. The releasing means (6) can be operated with a pass (2), which is provided with a valid operating code (3). For this purpose, the lock comprises reading means (15), preferably non-contact, by means of which the operating code (3) can be read out and compared with a code preprogrammed in the lock. In order to save energy consumption, the reading means are preferably provided with switching means, which are preferably automatically switched on when the pass is brought into a reading position. The invention further relates to a system for giving bicycles on loan, wherein each bicycle is provided with a lock according to the invention, and wherein issue and collection of the bicycles is managed with the aid of the issue and collection of passes (2).