Abstract: A method for communication, intended in particular for the purpose of a configuration, calibration, parameterization, interrogation or even a test or diagnosis, between a master device and a slave product including at least a processing unit and a direct current power supply line or input, and, if necessary, at least one output line and/or output interface. The method includes transmitting to the product data that can be interpreted by the processing unit thereof, the data being transmitted via the power supply line and by modulating the supply voltage.

Abstract: A device for detecting metal elements in slab form such as metal plates or sheets, includes an emission coil powered by suitable control elements and generating a magnetic field, a reception coil placed so as to enable generation via induction of a voltage across the terminals of the coil under the action of the magnetic field, and elements for processing and evaluating the voltage signal delivered by the at least one reception coil, enabling delivery of an information signal indicating the absence or presence of one or more metal elements near the coils. The emission coil (3) and the reception coil (5) are both mounted in a housing or a sensor head having an active detection face having an associated detection region, and are positioned at a defined inclination one relative to the other and relative to the face.

Abstract: An electronic device, in particular of the sensor or detector type, includes a housing having first and second longitudinal opposite and sealed ends. The housing contains an electronic card and with its inside volume being filled by an insulating filler material that coats the card, its components, and the end of a connecting cable connected to the card, the housing including an opening at its second end, which is sealed by a connected piece that is equipped with a passage opening for the connecting cable. The sealing piece includes at least a second through opening for injecting filler material (5), this or each second opening being sealed by a plug (9) made of a material that conducts and diffuses light, of which a portion is positioned in the vicinity of, and even in contact with, at least one light signaling element (10) or light indicator carried by the card (4).

Abstract: A method for communication, intended in particular for the purpose of a configuration, calibration, parameterization, interrogation or even a test or diagnosis, between a master device and a slave product including at least a processing unit and a direct current power supply line or input, and, if necessary, at least one output line and/or output interface. The method includes transmitting to the product data that can be interpreted by the processing unit thereof, the data being transmitted via the power supply line and by modulating the supply voltage.

Abstract: A sensor or detector device includes a box in the form of a tubular hollow body, through whose opening a connecting cable passes and that is sealed by a connected plug. The device also includes a card or an analogous substrate, carrying the electronic components of the sensor or detector and mounted in the box, by being coated by an insulating filler material filling approximately the entire remaining inside volume of the latter. The Device (1) is characterized in that it includes a mechanical element for the positioning with wedging of the card (6) in the box, preferably along a median plane or with longitudinal symmetry (PM) of the latter, with at least a portion of the element being integrated in the plug (5).

Abstract: A device for detecting metal elements in slab form such as metal plates or sheets, includes an emission coil powered by suitable control elements and generating a magnetic field, a reception coil placed so as to enable generation via induction of a voltage across the terminals of the coil under the action of the magnetic field, and elements for processing and evaluating the voltage signal delivered by the at least one reception coil, enabling delivery of an information signal indicating the absence or presence of one or more metal elements near the coils. The emission coil (3) and the reception coil (5) are both mounted in a housing or a sensor head having an active detection face having an associated detection region, and are positioned at a defined inclination one relative to the other and relative to the face.

Abstract: A sensor or detector device includes a box in the form of a tubular hollow body, through whose opening a connecting cable passes and that is sealed by a connected plug. The device also includes a card or an analogous substrate, carrying the electronic components of the sensor or detector and mounted in the box, by being coated by an insulating filler material filling approximately the entire remaining inside volume of the latter. The Device (1) is characterized in that it includes a mechanical element for the positioning with wedging of the card (6) in the box, preferably along a median plane or with longitudinal symmetry (PM) of the latter, with at least a portion of the element being integrated in the plug (5).

Abstract: An electronic device, in particular of the sensor or detector type, includes a housing having first and second longitudinal opposite and sealed ends. The housing contains an electronic card and with its inside volume being filled by an insulating filler material that coats the card, its components, and the end of a connecting cable connected to the card, the housing including an opening at its second end, which is sealed by a connected piece that is equipped with a passage opening for the connecting cable. The sealing piece includes at least a second through opening for injecting filler material (5), this or each second opening being sealed by a plug (9) made of a material that conducts and diffuses light, of which a portion is positioned in the vicinity of, and even in contact with, at least one light signaling element (10) or light indicator carried by the card (4).

Abstract: An inductive sensor or detector includes as its sensitive element, preferably defining a front working plane of the sensor, a coil system forming an air-core transformer arrangement with a primary coil or winding (2) and a secondary coil or winding (3). The primary coil or winding of the system is associated with a capacitive component (4) in order to constitute a LC oscillating circuit whose oscillation is sustained by an adapted generator (5) in the form of an operational amplifier (6) and an associated resistance arrangement (R, R5, R13). The sensor also includes a signal processing circuit, for example signal adding (8), amplifying, converting (9) and/or evaluating circuits (10), fed by at least one signal provided by at least one component of the coil system. The inductive sensor comprises a direct or indirect feedback line (11) from the secondary coil or winding (3) to the input of the operational amplifier (6) of the generator (5).

Abstract: An inductive proximity sensor includes a coil or inductance arranged in the vicinity of an active surface or end of the sensor, a current source repeatedly supplying the inductance, and a signals processor for signals corresponding to the voltages induced in the coil when fed. The induced voltages are influenced by the presence of objects within a given detection area, depending on their distance and on their constituting material. The coil or inductance is part of a parallel LC circuit. The current source is the capacitor of the LC circuit. A voltage signal amplitude measurement is performed after each switch from charge to discharge state. The result is computed using reference measurements to calculate a distance, a nature of the constituting material, and/or mass indicative value of the objects.

Abstract: An inductive sensor or detector includes as its sensitive element, preferably defining a front working plane of the sensor, a coil system forming an air-core transformer arrangement with a primary coil or winding (2) and a secondary coil or winding (3). The primary coil or winding of the system is associated with a capacitive component (4) in order to constitute a LC oscillating circuit whose oscillation is sustained by an adapted generator (5) in the form of an operational amplifier (6) and an associated resistance arrangement (R, R5, R13). The sensor also includes a signal processing circuit, for example signal adding (8), amplifying, converting (9) and/or evaluating circuits (10), fed by at least one signal provided by at least one component of the coil system. The inductive sensor comprises a direct or indirect feedback line (11) from the secondary coil or winding (3) to the input of the operational amplifier (6) of the generator (5).

Abstract: An inductive presence, proximity or position sensor comprising an inductive coil defining a working or active face of the sensor corresponding to the external face of a covering plate or a substantially plane part of the housing or casing containing said coil, the plate or plane part being made of a metal with high mechanical resistance and being disposed substantially perpendicularly to the coil axis. The plate or plane part (4) has at least one linear discontinuity (6), extending at least partly across the plate or plane part (4).

Abstract: Sensor head or detector head (1) composed primarily of a protective casing that forms a hollow body (2) with an external surface, the so-called active surface (2?), and of a sensing or detection element mounted in the hollow body and adjacent to part of the front wall of the protective casing defining the active surface, at the level of the internal surface opposite the latter, the sensor head characterized in that the sensing element (3) is located at a distance from the internal surface (4?) of the part of the wall (4) of the hollow body (2) in such a way as to delineate an interstitial space (5) of small thickness (d) forming a mechanical and physical decoupling interface between the part of the wall (4) and the sensing element (3).

Abstract: The invention relates to a measuring device, comprising a housing having two opposing measuring surfaces, to each of which there are assigned a phototransmitter and photoreceiver disposed in the interior of said housing, each measuring surface having an opening which is transparent to light of at least one wavelength and at least one of the two measuring surfaces is in the form of a dynamometer.

Abstract: An inductive presence, proximity or position sensor includes an inductive coil defining a working or active face of the sensor corresponding to the external face of a covering plate or a substantially plane part of the housing or casing containing the coil, the plate or plane part being made of a metal with high mechanical resistance and being disposed substantially perpendicularly to the coil axis. Sensor (1) is characterised in that the plate or plane part (4) includes at least one cut or similar linear discontinuity (6), extending at least partly accross the plate or plane part (4).

Abstract: Sensor head or detector head (1) composed primarily of a protective casing that forms a hollow body (2) with an external surface, the so-called active surface (2?), and of a sensing or detection element mounted in the hollow body and adjacent to part of the front wall of the protective casing defining the active surface, at the level of the internal surface opposite the latter, the sensor head characterized in that the sensing element (3) is located at a distance from the internal surface (4?) of the part of the wall (4) of the hollow body (2) in such a way as to delineate an interstitial space (5) of small thickness (d) forming a mechanical and physical decoupling interface between the part of the wall (4) and the sensing element (3).

Abstract: The invention relates to a measuring device, comprising a housing having two opposing measuring surfaces, to each of which there are assigned a phototransmitter and photoreceiver disposed in the interior of said housing, each measuring surface having an opening which is transparent to light of at least one wavelength and at least one of the two measuring surfaces is in the form of a dynamometer.

Abstract: An inductive proximity sensor (D) includes: a coil or inductance (L) arranged in the vicinity of the active surface or end of the sensor (D), a current source (C, S) repeatedly supplying the coil or inductance, a signals processor (SP) for signals corresponding to the voltages (V) induced in the coil or inductance (L) when fed, the induced voltages (V) being influenced by the presence of objects or bodies (B) within a given detection area, depending on their distance and on their constituting material(s), and the coil or inductance (L) being part of a parallel LC circuit. The current source is the capacitor (C) of the LC circuit. A voltage signal amplitude measurement is performed after each switch from charge to discharge state. The result is computed using reference measurements to calculate distance (D), nature of the constituting material(s), and/or mass indicative value of the object(s) (B).

Abstract: The present invention relates to a process for the detection of an object in an electrically conductive material and a corresponding sensor device. Process characterized in that it consists in generating, by means of a consequentially supplied inductance (3), a magnetic field adapted to induce Foucault currents in said conductive material, when said object (1) is located at a suitable distance from said inductance (3), in abruptly cutting the supply and the current flowing in said inductance (3), in collecting the voltage and/or current signal induced in said inductance (3) by said Foucault currents after cutting, and in analyzing the characteristics of said signal or signals, particularly its decay, thereby to deduce information concerning the nature and/or thickness of the conductive material of the detected object (1) and/or the distance between said inductance (3) and said object (1).

Abstract: A proximity switch which operates according to an inductive or capacitive action principle and contains a LC tuned circuit and a dynamically connected amplifier, and in which the approach of a suitable influencing element or article changes at least one oscillation parameter, the operating state of the amplifier being changed when the article does not reach a certain distance to the tuned circuit, the oscillation not however being interrupted with reaching the operating point. The proximity switch (1), likewise contains display elements (5) which are able to signal the presence of influence on the tuned circuit before the operating point or value of the amplifier is reached.