Inductive sensor

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

Faucet including capacitive and ultrasonic sensing

Abstract: A fluid delivery apparatus includes a spout, an ultrasonic sensor, and a capacitive sensor. The ultrasonic sensor is configured to detect the presence of a user adjacent the spout when enabled. The capacitive sensor is configured to define a capacitance sensing field in an area near the spout and also to detect a presence of a user. A controller is coupled to the capacitive sensor and the ultrasonic sensor. The controller is programmed to detect the presence of a user in the capacitance sensing field based on an output signal from the capacitance sensor. The controller is also programmed to enable the ultrasonic sensor in response to detecting the presence of the user in the capacitance sensing field with the capacitive sensor, thereby reducing the amount of power used by the ultrasonic sensor.

Magnetic Sensor System

Abstract: A magnetic sensor system (1) is provided that contains sensor elements (5, 6) that are sensitive to magnetic fields, the electrical properties of said sensor elements being modifiable according to a magnetic field that can be influenced by a mobile, passive transmitter element (8). The magnetic sensor system (1) includes two sensor elements (5, 6) in a gradiometer system, each of which is assigned to one of two permanent magnets (2, 3) having a predetermined separation. In terms of their dimensions, separation and position relative to the sensor elements (5, 6), the permanent magnets (2, 3) are located such that the offset of the output signal of the sensor elements (5, 6) is minimized in the gradiometer system.

Inductive sensor module for a vehicle and method for operating such a sensor module

Abstract: The invention relates to a sensor module for a vehicle safety system and to a method for actuating such a sensor module for a vehicle safety system, wherein data are wirelessly transmitted by at least one transmitter of the sensor module according to a sensor signal. The sensor module uses a generational measurement principle so that the energy for the operation of the sensor module is generated by said measurement principle. The data are stored in a memory in the sensor module, and a control device reads out said data according to at least one vehicle variable (e.g., speed) and/or event (e.g., slipping, blocking) and transmits said data.

A system for identifying or validating top crowns to be used as a means for activating a circuit

Abstract: A system is used to validate bottle caps, or top crowns, having particular reflectivity characteristics in plastic covering their undersides and in an alloy from which they are made. This permits the top crowns belonging in a particular promotion to be different, in these respects, from the rest of the top crowns on the market. Validation is carried out with the assistance of an identifying mechanism having an optical sensor and an inductive sensor in front of which the top crowns move while being carried by a conveyor belt or band when inserted in the identifying mechanism. The optical sensor works together with a generator of light having a given wavelength that is reflected by the underside of the cap or top. Thereafter, the light reaches the optical sensor. Signals generated by the optical and inductive sensors, upon the passage of the top crown, are duly processed and compared with the preset valid values in a suitable program. Depending upon the results obtained, the circuit is governed so that it, in turn, operates a hatch allowing the top crowns to be guided towards a rejection duct or an admission duct.

Inductive sensor for sensing of two coupling elements

Abstract: In an inductive sensor device, and a method for inductive identification, a first and a second exciter inductor 16 a, 16 b extend along a measurement range and vary spatially differently from each other. A first and a second inductive coupling element 12 a , 12 b couple a signal from the exciter inductors 16 a , 16 b into a receiver inductor 18 . The inductive coupling elements 12 a , 12 b are formed as resonance elements with a first resonance frequency f 1 and a second resonance frequency f 2 . In order to be able to simply determine the position of both inductive coupling elements quickly and accurately, the two exciter inductors are driven by different transmission signals S 1 , S 2 . Each of the transmission signals includes signal components of a first carrier frequency near the first resonance frequency f 1 varying in temporal progression, and of a second carrier frequency near the second resonance frequency f 2 varying in temporal progression.