Inductive sensor

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

Short-range unit for detecting objects in a medium, e.g. pipes or electrical wiring buried in a wall, has a high-frequency capacitive sensor and at least one other sensor e.g. inductive, radar, broadband pulsed radar or infrared

Abstract: Method for locating an object enclosed within a medium uses a high-frequency capacitive sensor (60) and at least one other sensor to obtain an information signal relating to the enclosed object. An independent claim is made for a measurement device with a high-frequency capacitive sensor and at least one other sensor, e.g. an inductive, radar, broadband pulsed radar or infrared sensor.

Application of high temperature superconducting quantum interference devices in transient electromagnetic method for magnetotelluric soundings

Abstract: We have explored the application of high temperature superconducting interference devices (SQUIDs) in the artificial source magnetotelluric sounding. Field experiments were performed to test the high T c SQUID in transient electromagnetic source. It showed that the SQUID sensor has some advantages over the conventional inductive sensor, and also revealed some problems. Theoretical studies have been carried out to investigate the prospects and limitations of the SQUID sensor.

Image sensor with increased pixel density

Abstract: An image sensor is disclosed that provides improved image resolution, for a given integrated circuit die size, by eliminating one or more dedicated power supply lines that feed each sensor element of the sensor array, thereby allowing greater sensor element density. Each sensor element has a first switch that is coupled to a photodetector to alternatively, under the control of a reset signal, (1) provide a first current to reset the photodetector and (2) present high impedance to the photodetector. A reset line is coupled to the first switch in each of the sensor elements to provide the reset signal and to both control the first switch and supply the first current. Such an image sensor may be particularly desirable when built using a metal oxide semiconductor (MOS) fabrication process. The image sensor may be used in a variety of imaging systems, including digital cameras.

Working tool spacing detector has capacitative or inductive sensor mounted in exchangeable rotary mounting

Abstract: The working tool (2) spacing detector has a capacitative or inductive spacing sensor. the sensor mounting is not integrated into the work clamp and is formed as a cylindrical exchangeable component (5) which is mounted parallel to the workpiece longitudinal axis. The sensor mounting is rotatable about this axis and has mounting holes for the sensors positioned eccentrically to the axis, so that the sensor position varies as the mounting is rotated.

Inductive sensor head for metal detectors

Abstract: An inductive sensor head for detecting of ferrous or non-ferrous electrically conducting objects, in particular rebars in a surrounding medium like concrete or a brick wall, comprises as essential sensing elements at least one field coil (Fl) with a small axial length compared to its diameter and at least one twin pair of sense coils (A, B) with a small diameter compared to the diameter of the field coil. The number of turns of wire on the field coil is small compared to the number of turns of wire on the sense coils. The common axis of the sense coils (A, B) is arranged perpendicular to the axis of the field coil so that there will be no component or a minimum component of maximum flux that is coaxial with the sense coils. For giving not only positional but also depths information, a twin pair of coaxially arranged identical field coils (F 1 , F 2 ) is provided which are excitated time sequentially. In a center plane between the field coils an orthogonal arrangement of two twin pairs of sense coils (A, B and C, D) is provided enabling a three-dimensional hidden object positioning. The sensor head according to the invention can be automatically calibrated, controlled and read out under control of a microcontroller.