Abstract: This installation for locating impacts comprises an interactive plate, at least three transducers arranged and distributed against the interactive plate in order to pick up progressive mechanical waves propagating therein and to transform them into electrical signals, and an electronic central unit programmed to locate an impact in the interactive plate by an analysis of the electrical signals that it receives from the transducers. It further includes an additional plate attached to the front face of the interactive plate and having an impact-receiving zone, and means for attaching the additional plate to the interactive plate, configured to ensure contact against the entire portion of the front face of the interactive plate located opposite the impact-receiving zone of the additional plate.

Abstract: This method for manufacturing a device for locating an impact comprising an interactive surface having a front face for receiving an impact and at least three transducers that need to be distributed and attached against the front face or a rear face of the interactive surface, comprises the following steps: determining a central positioning point for each transducer on the front face or rear face of the interactive surface; attaching each transducer, via the lower conductive layer thereof forming a first electrode, around the central positioning point thereof. It further comprises, following the attachment of each transducer, a step of machining the free upper conductive layer of at least one of the transducers, using a machine tool, at least as far as a piezoelectric intermediate layer of this transducer, in order to form a second electrode of this transducer, centering it around the central positioning point thereof.

Abstract: A device for locating an impact against an interactive surface includes at least three transducers distributed against the interactive surface and an electronic central unit programmed to locate the impact by analysing propagation time differences of progressive mechanical waves from the impact to the transducers on the basis of instants of impact detection identified in the electrical signals supplied by the transducers. The electronic central unit is programmed to trigger an impact detection from a first instant when at least one M-th derivative from at least one of the received electrical signals exceeds a predetermined non-zero threshold value and for then determining, for each electrical signal received from each transducer, at least one second instant, subsequent to the first instant, of the first zero crossing of at least one N-th derivative of this electrical signal, from which is identified at least one instant of impact detection.

Abstract: A shooting range facility that is for recreational or sporting purposes includes a target support plate, which can be tilted according to several different possible inclinations with respect to a reference plane, and at least one target representation intended to be displayed in a plane of the target support plate. Each target representation has several different displayable deformations, respectively associated with the several different possible inclinations, these different deformations being designed so that the orthogonal projections thereof in the reference plane are all identical when they are respectively displayed in the plane of the target support plate according to the inclinations with which they are respectively associated.

Abstract: This method for manufacturing a device for locating an impact comprising an interactive surface having a front face for receiving an impact and at least three transducers that need to be distributed and attached against the front face or a rear face of the interactive surface, comprises the following steps: determining a central positioning point for each transducer on the front face or rear face of the interactive surface; attaching each transducer, via the lower conductive layer thereof forming a first electrode, around the central positioning point thereof. It further comprises, following the attachment of each transducer, a step of machining the free upper conductive layer of at least one of the transducers, using a machine tool, at least as far as a piezoelectric intermediate layer of this transducer, in order to form a second electrode of this transducer, centering it around the central positioning point thereof.

Abstract: A device for locating an impact against an interactive surface comprises M transducers distributed against the interactive surface, M?4, and an electronic central unit programmed to locate the impact by analysing time differences of propagation of progressive mechanical waves from the impact to the transducers on the basis of instants of impact detection identified in the electrical signals supplied by the transducers. The electronic central unit is programmed to select, among the M transducers, a subset of N transducers, 3?N<M, of which the electrical signals chronologically comprise the first N instants of detection of impact identified and to locate the impact based on these N first instants of detection of impact identified and on the places of arrangement in the interactive surface of the N transducers selected.

Abstract: This device for locating an impact against a transparent interactive surface comprises at least three transducers distributed against the interactive surface and at least one calculator programmed to locate the impact by analysing time differences of propagation of progressive mechanical waves from the impact to the transducers on the basis of instants of impact detection identified in the electrical signals supplied by the transducers. It further comprises: a protective case, integral with the transparent interactive surface, intended to receive at least a portion of an electronic device with a display screen in such a way as to place the display screen facing the transparent interactive surface; means for adjusting the display screen for the centring thereof on a mark carried by a marking on the transparent interactive surface; and a calculator programmed to convert the location of the impact in the transparent interactive surface into a location of the impact in the display screen.

Abstract: A device for locating an impact against an interactive surface includes at least three transducers distributed against the interactive surface and an electronic central unit programmed to locate the impact by analysing propagation time differences of progressive mechanical waves from the impact to the transducers on the basis of instants of impact detection identified in the electrical signals supplied by the transducers. The electronic central unit is programmed to trigger an impact detection from a first instant when at least one M-th derivative from at least one of the received electrical signals exceeds a predetermined non-zero threshold value and for then determining, for each electrical signal received from each transducer, at least one second instant, subsequent to the first instant, of the first zero crossing of at least one N-th derivative of this electrical signal, from which is identified at least one instant of impact detection.

Abstract: A device for measuring very low current closes to femto Ampere using an integration, includes a first operational amplifier connected as an integrator, and a second operational amplifier connected as an original current generator which can compensate for leakage current in the circuit measurement state and reset the QO charge of the integration capacitor in the reset state.

Abstract: A device for measuring current by means of integration, includes a first operational amplifier connected as an integrator, and a second operational amplifier connected as an original current generator which can compensate for leakage current in the circuit measurement state and reset the Q0 charge of the integration capacitor in the reset state.

Abstract: A cigarette-simulating inhaler including a fluid-impermeable resiliently flexible outer tubular sheath open at both ends and containing a wick extending longitudinally within the sheath in one end thereof and a soft puncturable liquid-containing capsule in the other end thereof, the wick and capsule being separated from each other and forming an air chamber between them. The inhaler is activated by puncturing the end of the capsule nearer to the wick and then pinching the outer sheath at the location of the capsule in order to squirt the liquid into the air chamber prior to being absorbed by the wick. The empty capsule is then discarded.