Inductive sensor

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

Method and device for a combined inductive and capacitive level measurement

Abstract: A level sensor has both a rod shaped capacitance sensor (1a) with electrodes (14) and parallel set of electrodeless inductive sensors (9,10).

Improved magneto-inductive waveguide as wireless sensor net for structural health monitoring

Abstract: This paper summarizes ongoing work on applying passive magneto-inductive (MI) waveguides as wireless sensor arrays to monitor corrosion in infrastructure systems. The passive uniformly-spaced sensor array provides a low-cost and quick method to detect the onset of corrosion in concrete structures using a noninvasive approach. The embedded sensors communicate with neighboring sensors through inductive coupling. The corrosion information is interpreted based on both frequency and time domain characteristics. Bandpass characteristics in the frequency domain and received reflected time domain waves are investigated to locate the defects along the wireless sensor array. Using the relationship between the relative positions of defects and MI waveguide performances, a new combined technique to determine location of defects has been developed and proven to provide both improved sensitivity and defect location capability.

Recording photo frame

Abstract: A recording photo holder frame comprises an inductive sensor, a circuit board with the recording and playback functions, a recording button, a microphone and a loudhailer The inductive sensor, the circuit board, the recording button, the microphone and the loudhailer are electrically connected The recording photo holder frame can do the recording by pressing the recording button Through the inductive sensor automatically broadcasting the recorded sound, the using performance and function of the photo holder frame are increased The recording photo holder frame is convenient for use, and can satisfy more consuming needs for people

Partial load position locating device for gas insulated switch gear, has correlator interconnected with data processing device, which determines delay time and position of loads between sensors from relative frequency of time difference

Abstract: The device has capacitive or inductive sensors (S1, S2) arranged at a distance from each other to detect electromagnetic waves caused by partial loads. A digitally working correlator (4) is interconnected with a data processing device (5). The data processing device determines delay time and a position of the partial loads between the sensors from a relative frequency of a time difference. Performance detectors (2a, 2b) are interconnected with threshold value measuring devices (3a, 3b) i.e. comparator circuit.

Inductive displacement sensor (position pick-up, and coder)

Abstract: The invention relates to an inductive displacement sensor having two magnetic circuits, which are largely decoupled from one another and of which, at least in one, a core controlling the respective electromagnetically active path length determines the inductance ratio of the magnetic circuits and the inductance ratio is preferably determined by measuring the frequency ratio of two oscillator frequencies. The inductances of the magnetic circuits, in a manner largely decoupled from one another, are respectively switched into an oscillator in a frequency-determining manner. The sensor according to the invention scans in a directly integrating fashion, and the core to be scanned need not be tightly surrounded by the coil. The sensor is therefore particularly suitable for directly scanning floats.