Inductive sensor

About: Inductive sensor is a research topic. Over the lifetime, 2282 publications have been published within this topic receiving 21984 citations.

Electrical Displacement-, Load-, or Force Sensor

Abstract: Electrical displacement-, load- or force sensor comprising a spring which is subjectable to a mechanical load or force and an inductive sensor element for measuring an electrical parameter that varies depending on said mechanical load or force on the spring, wherein the inductive sensor element is the spring and said spring is placed in series with an electrical circuit comprising in parallel a switching element and an RC circuit. The sensor can then be used to measure the load or force applied to the spring by arranging that the spring is energized through an electrical current flowing through the spring and through the current path with the switching element parallel to the RC circuit, and by subsequently interrupting the current from flowing through the current path parallel to the RC circuit and forcing it to flow through the RC circuit. A voltage decay time of an electrical energy received by the RC circuit upon interruption of the current flowing through the current path parallel to the RC circuit is then measured and used as a measure for the load or force applied to the spring.

Inductive proximity sensor for metal detection

Abstract: Proximity sensor is among the oldest electronic parts in automation history. The recent research and progress of inductive proximity wave (IPS) sensor has grown with various demands of the domain. The IPS sensors have several unique benefits, such as light weight, small size, and immune to adverse environmental conditions and have a high switching rate for rapid response specifications. Means that, with the ability to detect at close range, IPS is a very useful for precision measurement applications.

Method for controlling tightness of jars with food and device for its implementation

Abstract: FIELD: glass industry.SUBSTANCE: invention is used to control the tightness of metal and glass jars with food. The essence of the invention lies in the fact that dynamic deformation of the can lid is performed by a weight freely falling on the lid surface, followed by the determination of the amortization properties of the can lid by the parameters of the function of moving the freely falling weight in time. Registration of leakage and rejection of the can is carried out according to the amount of change in the amortization properties of the can lid. Adjustment of the initial position of the freely falling weight relative to the surface of the can lid, as well as measuring of the diameter, height of the can and the position of the can on the conveyor are performed. The device for monitoring the tightness of cans with products includes a conveyor equipped with a drive, a laser source, a photodetector, a sleeve with grooves, a can lid deformation element installed in the sleeve cavity, a deformation element holder in the initial upper position. The deformation element is equipped with a limiter for the lower inoperative position and a limiter for the initial upper position in the bushing cavity. The device contains an inductive sensor for linear displacement of the deformation element, a device for adjusting the initial position of the deformation element with a drive, a control unit connected to a conveyor drive, a laser source, a photodetector, an inductive sensor, a deformation element holder, and a device drive for adjusting the initial position of a deformation element.EFFECT: invention is aimed at increasing productivity of monitoring the tightness of cans with products, as well as increasing accuracy and continuity of control.2 cl, 10 dwg

Signal-processing circuit for an inductive sensor

Abstract: A circuit arrangement for signal processing for an inductive sensor that can scan movable parts is specified, in which the coil of the inductive sensor is located in a current mirror circuit and is itself part of the circuit arrangement. The current generated when the parts to be scanned pass in the coil is amplified directly in the current mirror circuit, the amplified current is evaluated by means of a measuring resistor and an evaluation device, for example to determine the rotational speed of a scanned body.

Method for detecting the intention to lock or unlock a vehicle door and associated detecting device

Abstract: One subject of the present invention is a device (D) for detecting the intention to lock or unlock a door of a motor vehicle, said device (D) comprising at least one first inductive sensor (A1), comprising a first target (20), an oscillating circuit (M1) comprising a coil (B), means for measuring a resonant frequency of said circuit (M2), and a printed circuit board (10), said device (D) being characterized in that it comprises a second inductive sensor (A2) comprising: - a second target (30) of loop shape, such that a first end (E1) of the loop is connected to a fixed potential, and a second end (E2) of the loop is connected to switching means (S1) having two states: - in a first state (P1), the second end (E2) of the loop is connected to said fixed potential, - in a second state (P2), the second end (E2) of the loop is connected to a floating potential, - means (M3) for controlling the switching means (S1), - the coil (B) of the first inductive sensor (A1) being common to the second inductive sensor (A2).