Abstract: In a method for measuring the transmit time of light, in particular for cameras, a first light signal which is clocked by a first clock controller (16) is input into a light system (14) by a light transmitter (12) and is reflected back to a receiver photodiode (13) by means of a reflective objective (O). The photodiode (13) determines a reception signal as a result of the first light signal.

Abstract: In a method and a sensor device for inductively producing an electrical measuring signal in dependence on a magnitude that is to be measured, there are provided at least two driver coils through which a current is caused to flow in turn at the clock pulse rate of a clock pulse circuit, this current induces a voltage which is dependent on the magnitude that is to be measured in a plurality of coils, the voltage being sub-divided at the clock pulse rate of the clock pulse circuit into voltage signals which are associated with the driver coils, where the voltage signals obtained thereby are evaluated for the purposes of obtaining the measuring signal, where at least two sensor coils are associated with the at least two driver coils, wherein either the sensor coils or the driver coils are connected up in the same sense, whereas the respective other coils are connected up in a mutually opposite sense, and the voltage signals of the sensor coil associated with the driver coils are sampled in certain time periods of

Abstract: A sensor for the location of metallic objects and also an associated method comprise a plurality of transmitting coils (2.1, 2.2) and at least one receiving coil (1.9) which are arranged such as to be inductively coupled to one another and overlap to a partial extent for the purposes of decoupling the interaction therebetween, whereby there can be obtained a point of optimal cancellation of the interaction. Due to the fact that a flow of current is passed through the transmitting coils (2.1, 2.2) by a sensor electronic system, equal flows of current through the transmitting coils have an effect upon the at least one receiving coil (1.9) which results in a local point of optimal cancellation which moves in a first direction when there is a flow of current in a first transmitting coil (2.1), whereas it moves in another direction when there is a flow of current in a further transmitting coil (2.

Abstract: An identification element has a transponder with a data-emitting transmission unit and with a data-receiving reception unit in order to communicate with a device for registering and/or controlling access authorization to spaces or objects. In addition, a control circuit is provided for the transmission unit and reception unit. The transponder is an optical transponder (1.1), the transmission unit of which is a light-emitting transmission unit (1.3) and the reception unit of which is a light-receiving reception unit (1.4). The optical transponder and an autonomous power supply are integrated into the identification element. The identification element is in the shape of a name plate or of an identification element of comparable size which is assigned to an object or body or is to be supported thereon. By virtue of the fact that the transmission unit (1.3) of the optical transponder (1.1) is operated by the control circuit (2.

Abstract: An apparatus for capacitively measuring changes has a sensor (S) with a sensor-active region. The sensor has at least one transmitting electrode, which generates an electric field, and a further electrode (13) which is capacitively coupled to the transmitting electrode (15), wherein the transmitting electrode (15) is arranged between the further electrode (13) and an element (11) which is at a reference potential. An output of a driver/evaluation unit (5.0) is coupled to the transmitting electrode (15) and an input of the driver/evaluation unit (5.0) is coupled at high impedance to the further electrode (13), an electric field forming between the further electrode (13) and a reference potential on account of the electric field, generated by the transmitting electrode (15), between the transmitting electrode (15) and the further electrode (13). A change in the capacitance between the further electrode (13) and the reference potential is thus detected using the driver/evaluation unit (5.0).

Abstract: A switching strip profile for a switching strip for the detection of obstructions, and an apparatus for the detection of obstructions. The switching strip profile has a profiled body composed of electrically non-conductive material, a first conductor which is arranged in a rear area of the profiled body, and a second conductor which is arranged in a front area of the profiled body. The first conductor has two side surfaces which run essentially parallel to and at a short distance from a respective outer wall of the profiled body, and, on a lower face which faces an attachment surface of the profile, the first conductor has a U-like shape which is open towards the attachment surface.

Abstract: A device and a method for the capacitive detection of an object which is preferably arranged behind a flat article that is transparent to electromagnetic radiation or a wall, including a sensor incorporating sensor electrodes for the detection of the object, preferably for the detection of relative movements between the sensor and the flat article or a finger, where a control circuit serves for the control of the sensor electrodes and for the evaluation of the output signals of the sensor, and, due to the fact that the sensor comprises at least one sensor electrode which is surrounded by at least one further electrode, the surrounding further electrode is connected to the sensor electrode by the control circuit in such a manner that, in the event of a change of the potential of the sensor electrode, the potential of the surrounding further electrode is regulated in the opposite sense to the sensor electrode in such a way that the sensor electrode remains at a pre-determined or pre-definable potential, such th

Abstract: Disclosed is an arrangement for monitoring changes in an object's surrounding field, including a sensor-active region(s), a measurement path(s) with a driver for applying a variable, a receiver(s) detecting a variable, a circuit connected downstream of the receiver for determining changes in a surrounding field and generating a control and/or measurement signal, a further measurement path(s) or reference section(s) with a driver to detect changes in the variable and the measurement path(s), a clock circuit switched on at time intervals of the measurement path and the reference path a regulating device for the variable(s) introduced by the drivers in response to changes in the variable in the field, with the result that at the receiver average the same amplitude of the variable passes from the drivers and the sensor-active region to the receiver from the measurement paths the sensor-active region being coupled with high resistance to the drivers.

Abstract: Disclosed is a method and a device for light propagation time measurement, wherein a light signal is transmitted from at least one transmitter into a light path via a retroreflective object to a receiver for detecting the alteration of the first signal, presence, and/or distance of the object, the received signal being determined from the path and compared with a second signal produced without the light path to achieve a comparison value, which regulates amplitude values of the transmitted signal and/or of the second signal, a clock change signal corresponding to the light propagation time between received signal and second signal is detected cyclically, a difference value being determined by comparing change signals between received signal and second signal , the difference value being altered by means of a phase shifter , delay of the phase shifter that occurred given a minimal difference value determining the light propagation time.

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 approximately 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: In a method and a sensor device for inductively producing an electrical measuring signal in dependence on a magnitude that is to be measured, there are provided at least two driver coils through which a current is caused to flow in turn at the clock pulse rate of a clock pulse circuit, this current induces a voltage which is dependent on the magnitude that is to be measured in a plurality of coils, the voltage being sub-divided at the clock pulse rate of the clock pulse circuit into voltage signals which are associated with the driver coils, where the voltage signals obtained thereby are evaluated for the purposes of obtaining the measuring signal, where at least two sensor coils are associated with the at least two driver coils, wherein either the sensor coils or the driver coils are connected up in the same sense, whereas the respective other coils are connected up in a mutually opposite sense, and the voltage signals of the sensor coil associated with the driver coils are sampled in certain time periods of

Abstract: An apparatus for catching an insect sitting on a contact surface. The apparatus includes a casing, a light source disposed in the casing for dazzling and immobilizing the insect on the contact surface, and a catch tube disposed in the casing and movable relative to the casing. The apparatus further includes a catch container disposed adjacent to the catch tube and a slider to lift the insect off the contact surface. The slider is movable relative to the casing.

Abstract: The invention relates to a method for determining and/or evaluating a differential, optical signal. According to the invention, at least two first light sources (S1, S2) which are sequentially clocked in terms of light and emitted in a phased manner are provided, in addition to at least one receiver (E) which is used to receive at least the alternating light portion arising from the first light sources (S1, S2). The light intensity radiating through at least one light source (S1, S2) in the measuring arrangement is controlled in such a manner that the clock synchronous alternating light portion, which occurs between different phases, is zero in the receiver (E). By determining the reception signal in the receiver (E) in relation to the phase position in order to regulate the radiated light intensity and by producing an adjustable variable (R) directly or by adding current in the receiver, it is possible to simplify digital implementation of the method with as little sensitivity loss as possible.

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.

Abstract: A control device or a method monitors access of at least one body or one person to an access area, the device comprising at least one emitting element that emits light radiation into the access area, at least one receiving element that receives the light radiation, and at least one means which generates a diffused light field that emits the light radiation, which is emitted into the access area, in the form of a planar light field, where on the receive side, a detection element for the diffused detection of the light field and a transferring means for transferring the light detected in a diffused manner to the receiving element are provided.

Abstract: An arrangement serves the purpose of monitoring an object such as a door for changes in a field surrounding the object. A sensor-active region having a measurement area (11a) is associated with the object, and a driver (12, 13) applies a certain variable in the sensor-active region. A receiver (14) detects the variable applied by the drivers and changes in the variable in the field surrounding the object (10) in the sensor-active region (11). By means of a circuit which is connected downstream of the receiver (14), the changes in the field surrounding the object (10) are used to produce a control and/or measurement signal (?11a, ?11b).

Abstract: Optoelectronic device and method for detecting the position and/or movement of an object, the device and method include: a plurality of transmitters for emitting radiation, at least one receiver for receiving the radiation emitted by the transmitters and reflected back by the object or the radiation emitted from transmitters associated with the object, a plurality of mutually different radiation paths, which are formed between at least a part of the transmitters, the object and the receivers or between transmitters associated with the object and the receivers, a timing circuit for cycled switching of the transmitters of the different radiation paths, an evaluation device, which converts the signals received by the receivers for the different radiation paths into values for detection of the position and/or movement of the object along a line or in a surface, wherein for three-dimensional detection of the position and/or movement of the object, the timing circuit switches a plurality of, but at least a part of

Abstract: In a method and a device for light propagation time measurement, in particular for cameras, a light signal clocked by a clock controller (11) is transmitted from at least one transmitter (12) into a light path (14) via a retroreflective object (O) to a receiver (13) for detecting the alteration of the first light signal on account of the approach, presence and/or distance of the object (O).

Abstract: “The application relates to a method and device for measuring the propagation time of capacitive or inductive fields.

Abstract: The invention relates to a device and a method for identifying an object O in an opening that can be closed by means of a mobile element (12). Light is fed into at least one fiber-optic light guide (33, 34) from a light source (1, 2), and variations in the received light are detected by means of at least one receiver (Ea, Eb), the fiber-optic light guide being arranged at least partially along the edge of the opening (11). A first fiber-optic light guide sends light transversally to the length thereof, said light being then received by a second fiber-optic light guide transversally to the length thereof. The second fiber-optic light guide (34) is connected to the receiver (Eb). The fiber-optic light guides are arranged on the edge of the opening (11) in such a way that a light field (F) at least partially bridging the opening is produced.