摘要:
A capacitive sensor device with an electrode system has a first transmitting electrode and a first reception electrode, wherein the first transmitting electrode can be brought into capacitive coupling with the first reception electrode, and a second transmitting electrode and a second reception electrode, wherein the second transmitting electrode can be brought into capacitive coupling with the second reception electrode, a signal generator for feeding the first transmitting electrode with a first electric alternating signal and the second transmitting electrode with a second electric alternating signal, and a signal processing device, which is coupled with the first reception electrode and with the second reception electrode, and which is adapted to form a first measurement variable from the difference between a first electric value tapped at the first reception electrode and a second electric value tapped at the second reception electrode.
摘要:
The present invention relates to a method and a device for setting an electrical filter comprising a predeterminable number of distributed filter elements, e.g. short-circuited lines, resonators, impedances, etc., exhibiting tolerances, so that the actual filter characteristic curve does not correspond to the theoretical filter characteristic curve, a pulse having a predeterminable centre frequency (f0) firstly being applied to the filter and then the individual filter elements being tuned on the basis of the impulse response (UA) of the filter. The filter elements are advantageously tuned progressively, starting from the input port (1) of the filter.
摘要:
The invention relates to a device for determining and/or monitoring filling of a product or the position of the boundary surface between two media or phases in a container. The device comprises a signal generating unit that generates high-frequency measuring signals, an injection unit and a surface waveguide, wherein the measuring signals are injected into the surface waveguide by means of the injection unit and directed toward the filling product via the surface waveguide. The device also comprises a receiver/evaluation unit, which directly or indirectly determines filling of the product or the position of the boundary surface in the container during the running time of the measuring signals reflected on the surface or boundary surface of the filling product. The invention aims at providing a device which is configured in such a way that parasitic voltages are effectively diverted. This is achieved in that the surface waveguide is connected to a frame potential by means of a coupling.
摘要:
A sealing arrangement including a sealing ring with a support ring extending substantially in a radial direction. The support ring is joined in the radial direction to a first sealing element that lies in contact with and is nonrotatable with respect to a first machine element to form a static seal. The support ring is also joined in the radial direction to a second sealing element that is placed against a second machine element rotatably with respect to the second machine element to create a dynamic seal. The first and second sealing elements are each made of an elastomeric material, and at least one multipole ring that can move past a rotational speed sensor. The multipole ring is made of a pasty, hardenable, and magnetizable material that is arranged as a intermediate layer of film-like thinness on the side of the support ring facing the rotational speed sensor. The multipole ring has north and south poles alternating in the circumferential direction and extending in the radial direction, and the multipole ring is completely covered by the elastomeric material of the first and/or second sealing elements.
摘要:
A hydraulically damped rubber bearing, that supports a vibrating mechanical subassembly on a substructure, has an actuator with an electromagnetic drive mechanism associated with a fluid filled chamber. The drive mechanism is responsive to performance characteristic controls which are electrically connected to at least one signal emitter in the subassembly and have a final stage in the front of a power amplifier.
摘要:
A line (3) provided between the head space (11) of the fuel tank (10) and the induction tube (1) of the engine contains an absorption element (9) and can be shut off by a signal-actuated servo valve (8) connected to the outlet from the absorption element. The line (3) is provided with a first sensor (4) preceding the absorption element (9) and detecting gas flows. A vacuum actuator (12) following the servo valve (8) is provided with a second sensor (13) which gives a signal when actuated. The first sensor (4) and the second sensor (13) are connected for carrying signals to a diagnosis block (14) which compares them with the signal (17) actuating the servo valve (8) and uses them for fault diagnosis.
摘要:
A printed circuit board (P) has an evaluation device (E) and an electrode configuration of a capacitive sensor, wherein the electrode configuration has at least two electrodes, one arranged above the other and spaced apart from each other, which each are formed by portions of at least one electrically conductive layer of the printed circuit board (P), and wherein at least one electrode of the electrode configuration is coupled with the evaluation device (E) via a conductor path of the printed circuit board (P). Furthermore, an electric handheld device may have at least one such printed circuit board (P).
摘要:
In an evaluation method for a capacitive contact sensor with at least one transmitting and at least one receiving electrode, which are able to be brought into a capacitive coupling, at the at least one receiving or sensor electrode a measurement signal is tapped, which represents the temporal course of the coupling capacitance between the at least one transmitting electrode and the at least one receiving electrode and the temporal course of the capacitive load of the sensor electrode, respectively, a reference signal is created from the measurement signal, and at least one detection signal is created, when the reference signal meets at least one detection criterion. An evaluation device may be coupled with at least one transmitting electrode and at least one receiving electrode or with at least one sensor electrode of the capacitive contact sensor and is adapted to carry out the above evaluation method.
摘要:
A method for the detection of a gripping of a hand-held device with one hand, using a capacitive sensor device, uses at least one transmitting electrode, at least one compensating electrode and at least one receiving electrode. An electrical signal is tapped at the receiving electrode and the sensor device can be operated in a first operating mode and in a second operating mode. In the first operating mode, a first alternating electrical signal is applied to the transmitting electrode and a second alternating electrical signal is applied to the compensating electrode. In the second operating mode, the second alternating signal is only applied to the compensating electrode. Furthermore, a sensor device can be provided which is configured to perform the method as described above.
摘要:
The present invention relates to a method of constructing a microwave filter (1, 10) comprising a plurality of coupled resonators (2) and to a microwave filter manufactured by the method. A microwave filter (1, 10) is constructed by providing a plurality of individual resonators (2) and mechanically connecting the plurality of resonators (2) to form the filter (1, 10). Each of the resonators (2) is formed in one piece at least with a bottom wall (4) and a sidewall (5) laterally encircling the bottom wall (4) and extending upwardly therefrom. Furthermore, a plurality of coupling means (7, 11) is provided between the individual resonators (2). Accordingly, a microwave filter (1, 10) manufactured by the method comprises a plurality of coupled resonators (2) mechanically connected to form the filter (1, 10), wherein each of the plurality of resonators (2) is formed separately in one piece at least with a bottom wall (4) and a sidewall (5) laterally encircling the bottom wall (4) and extending upwardly therefrom, and wherein a plurality of coupling means (7, 11) is provided between the individual resonators (2).