Abstract:
A mechanical clock has a driving element and a braking element. The braking action of the braking element is based on a hydrostatic gradient of at least one flowable medium. The driving element exerts a first torque on a first shaft extending along a first axis, and the braking element exerts a second torque on the first shaft, with the second torque being opposed to the first torque. The braking element has at least one drum which is rotatable around a second axis and in which the flowable medium is located.
Abstract:
A device for controlling lighting, especially inside the passenger compartments of vehicles, including at least one light source and at least one sensor which influences the light source and which detects at least the movement of a body within the active range of the sensor. A control unit, which is used to control the light source according to a sensor signal provided by a sensor, is associated with the light source. Control means, which are controlled by the control unit, track the light from the at least one light source according to a sensor signal corresponding to the position of the body. The invention also relates to a method for controlling the device.
Abstract:
A protective device for an iron having an iron surface and a thermostatically controlled heating device for heating the iron surface. The protective device comprises: a first device for detecting a non-operative state of the iron by being configured to detect a movement and a lack of movement of the iron surface and an object relative to one another thereby generating a first signal; a second device for detecting whether an object is located adjacent the iron surface thereby generating a second signal, wherein the first device and the second device operate in a temporally offset manner and comprise a single system including a transmitter and a receiver for generating the first signal and the second signal; and a logic unit operatively coupled to the single system for receiving the first signal and the second signal therefrom and for interrupting a current supply to the heating device as a function of the first signal and of the second signal when, simultaneously, the first signal indicates a lack of movement of the iron and the second signal indicates an object adjacent the iron surface.
Abstract:
A noise signal filter (5) in a noise level detector (3) filters out the noise signals (Sr) to be determined from a useful signal (Sn) transmitted via transmission channel (1), and mutes the noise signal parts, which have a system reference line as their direct basis, through a rectifier (6) and an amplitude limiter (9) to a peak envelope demodulator (8). The latter produces an envelope curve from the input signal, with places in which only the amplitudes of the noise signal determine the level of the envelope curve. The level of these places is stored by a minimum level memory (11), which follows the input signal, and stores the lowest level value obtained so far. To compensate for a drift of the signal guiding the minimum level memory (11), a second minimum level memory (13) is provided, which stores the lowest minimum value obtained so far and routes it to a signal substracter (16), to compensate for the drift and to remove voltage differences from the tracking to the minimum level memories.
Abstract:
The invention relates to a measuring arrangement and to a method for the inductive analysis of metal objects, comprising a coil arrangement having an excitation coil (1.1) that can be excited by means of an excitation current, and at least one receiver coil (1.2), said two coils being inductively coupled to one another. By means of an evaluation unit, an output signal (5.4) of the measuring arrangement is evaluated. Means for generating a ramp-shaped voltage signal of the excitation voltage (2.5) as a specification for a ramp-shaped current through the excitation coil are provided. A control device regulates the current at the base point of the excitation coil (1.1) such that a ramp-shaped excitation current is produced, which is modulated by the metal object (1.6), and which affects the change in the excitation voltage. Thus, an inductive analysis or detection method is provided, in which temperature influences on the coil system have no effect at all, and which, moreover, allows a spectral analysis of the inductive properties of the metal to be analyzed in a wide frequency range.
Abstract:
The invention relates to a closing system having a key (1.1) coded in a quantum-physical manner, which withstands very high mechanical forces, wear, or temperatures. The key consists, for example, of a solid stainless-steel bar having, for example, a diameter of 8 mm and, for example, a length of 120 mm. The coding of the key (1.1) is based on a quantum-physical solid body cryptography. The matter of the solid main body is partially changed in such a way that this change can be read out by means of read-out methods suitable therefor. The coding occurs into the depth of the main body such that external influences such as damage to the surface do not impair the function of the key. The quantum key processed in such a way has no visible or perceptible features of the coding. More than 500 billion different codings are accommodated on a length of approximately 50 mm. The locking system comprises a decoding unit on the lock for decoding the codings, which have been introduced into the solid metal of the key in a quantum-physical manner. The arrangement according to the invention offers a locking system that is extremely resistant to forgery and manipulation, on the basis of quantum-physical solid body cryptography.
Abstract:
A touchless method for registering commands from a display (e.g. reconfigurable display) may include any of various components. The method may use a light sensor in front of or behind the display to detect light reflected by a user's finger approaching a control option displayed on the display. Light used to display images may be provided at a frequency and/or time that can be identified by a processor connected to the light sensor, or can possess some other unique property (e.g. color) which may be distinguished by the processor.
Abstract:
An optoelectronic rotary encoder for setting or regulating parameters comprises a first measuring arrangement having a plurality of first light sources (2.41, 2.43), which are arranged on an imaginary closed line and emit light beams in a clocked manner, time-sequentially, and a first receiver (2.3) for receiving a first light beam emitted by at least one of the first light sources and reflected by an object. An evaluation device evaluates the light received by the receiver (2.3) and converted into electrical signals and determines therefrom a position of the object relative to the rotary encoder. A further measuring arrangement is provided for the identification of additional information likewise by means of the evaluation device. The further measuring arrangement has a further light source (2.5) and a further receiver (2.7) for receiving a further light beam emitted by the further light source (2.5) and reflected at the object. A shading element (2.2, 2.10, 2.11) permits the passage of the first light beams of the first measuring arrangement to and from a first location (1.3)—assigned to the imaginary closed line—of an operating surface (1.2) and passage of the further light beams of the further measuring arrangement to and from a further location (1.4) of the operating surface (1.2) in each case with reflection of the light beams into the receivers (2.3, 2.7). A simple and expedient rotary encoder is thus provided which can also be used in safety-relevant areas.
Abstract:
The invention relates to a method and a device for determining a modification at one object or a modification caused by an object (1.26), wherein a measurement of the light propagation time is also possible. According to the invention, an amplitude control (1.6) regulates a transmitter light source (1.8) and a reference light source (1.9) on the basis of a control value (1.29) in such a way that the signals from the corresponding associated light paths have approximatively the same value at the input of a comparator (1.19). As a result, an alternative detection of extraneous light is possible. In addition, a phase regulation for measuring the light propagation time can be provided.
Abstract:
A protective arrangement for preventing parts of the body from being trapped between at least two mutually relatively moveable parts including at least one strip which is associated with at least one part. There are provided in the strip at least two mutually spaced conductive elements extending in the longitudinal direction of the strip. An electronic sensor system serves to produce an output signal for a capacitance that is adapted to vary as a result of external influences. Due to the fact that at least one first conductive element sends out a signal which is received by at least one second conductive element due to the capacitive effect of the first conductive element and that the second conductive element is at substantially the same electrical potential as the first conductive element and likewise sends out the received signal, there is provided a capacitive crush protection arrangement which does not react to splashes of water or the formation of dew or frost.