Stichting IMEC Nederland

Example embodiments describe a computer-implemented methods for training a spiking neural network for encoding and decoding event information obtained from a set of sensors in an array-based sensing system. Further embodiments describe a neural network training system as well as a sensor and an edge gateway device employing such encoding and decoding spiking neural networks.

A computer-implemented method for estimating a Time of Arrival, ToA, or a distance between two wireless systems, based on a received signal communicated between the two wireless systems in a close-in multipath environment, wherein at least one signal is transmitted from a first of the wireless systems and signal resultants are received on a second of the wireless systems via different ports, the method comprising: obtaining a set of measurements on the signal resultants with respect to a timing reference; determining an aggregation-based metric based on an aggregation of the set of measurements; determining a selection-based metric based on a selection of a presumed earliest measurement among the set of measurements; and determining an overall ToA estimate or an overall distance estimate based on a combination of the aggregation-based metric and the selection-based metric.

A receiver circuitry (100) for receiving power through wireless power transfer comprises: a power receiver (110) comprising a resonant circuit (112) and a first switch (126), and configured to store received energy through resonance, wherein the first switch (126) is in a closed state for build-up of energy in the resonant circuit (112) and in an open state for forcing output of a current from an output node (118); a second switch (128) configured in an open state to disconnect the output node (118) from a load (130) and in a closed state connect the output node (118) to the load (130); and a control unit (150) configured to control states of the first and second switches (126, 128) based on a relation of a number of resonance cycles to a cycle threshold value and on a relation of an amount of energy built up to an energy threshold value.

There is provided an apparatus for Raman spectroscopy comprising: a tunable laser configured to output laser light towards a sample for inducing Raman scattered light from the sample, wherein a wavelength of the laser light is tunable; a light collecting and filtering arrangement configured to collect the Raman scattered light in a collection angle from the sample, wherein the arrangement provides the Raman scattered light as incident light onto a narrow bandpass filter comprising a transmission band with a FWHM of 0.2 nm, and preferably 0.02 nm or less, and wherein an angle of incidence of the incident light is matched to a filter acceptance angle of the bandpass filter; and a light detector, configured to receive the Raman scattered light filtered by the arrangement and to detect the Raman scattered light. The apparatus is configured to scan the wavelength of the laser light and to detect the intensity of the Raman scattered light by the light detector for forming a Raman spectrum of the sample.

A neuro-synaptic processing circuitry (1) for performing event-based neuro-synaptic operations based on synaptic weights and neuron states, the circuitry comprising: a data memory (100) configured to store the synaptic weights; one or more neuron processing elements, NPEs, (121, 122, 123, 124) configurable to execute NPE instructions (120) for performing the event-based neuro-synaptic operations; a controller (130) configured to determine the event-based neuro-synaptic operations in function of one or more neuro-synaptic events; wherein the controller is further configured to generate the NPE instructions from the event-based neuro-synaptic operations; and weight-evaluating means configured to determine if one or more of the synaptic weights have a value of zero; and wherein, if the weight-evaluating means determines one or more of the synaptic weights having a value of zero, the NPEs are configured to omit executing one or more of the NPE instructions involving the one or more of the synaptic weights having a value of zero.

An electrochemical sensor arrangement (100) for measuring a property of a fluid comprises: a first electrode (110) and a second electrode (120) arranged on a first surface (132) of a first layer (130); and readout circuitry (140) connected to the first electrode (110) and the second electrode (120), wherein the readout circuitry (140) is formed at a second surface (134) of the first layer (130) opposite to the first surface (132) or at a substrate (142) separate from the first layer (130); wherein a second shape of the second electrode (120) completely encloses the first shape of the first electrode (110) with a spacing (114) being defined between the first electrode (110) and the second electrode (120); and wherein a first connection (136) between the first electrode (110) and the readout circuitry (140) comprises a first via (112) extending from the first electrode (110) through the first layer (130).

According to an aspect of the present inventive concept there is provided an ingestible device for analysis of the gastrointestinal tract, the ingestible device comprising: at least one sensor configured for sensing a biochemical parameter, wherein the at least one sensor is configured to generate biochemical parameter data for identifying an anatomical localization of the ingestible device in the gastrointestinal tract, and a magnetic field sensor configured to receive an alternating magnetic field for generating spatial location data representing a spatial localization of the ingestible device, and wherein the ingestible device is configured to provide a combined localization of the ingestible device in the gastrointestinal tract based on the anatomical localization and the spatial localization.

A method for reducing motion artefacts in a speckle pattern signal comprises: illuminating (202) a region of a living being (10) by a light signal to form a speckle pattern; acquiring (204) a sequence of images of the region (12) of the living being (10); extracting (206) a speckle pattern signal from the acquired sequence of images to form a wave propagation signal representing a variation in time of a pressure wave or volumetric flow wave in the living being (10); acquiring (208) a motion compensation signal based on an optical measurement representing the region (12) of the living being (10), wherein the motion compensation signal represents a variation in time of motion of the living being (10); and performing (210) motion compensation of the wave propagation signal based on the motion compensation signal.

There is provided an apparatus (100, 200, 300, 400) for Raman light detection, said apparatus (100, 200, 300, 400) comprising: an illumination unit (112, 212, 312, 412), configured to provide a wavelength modulation for generating and outputting wavelength modulated laser light towards a sample (10) for inducing generation of Raman scattered light from the sample (10); a wavelength filter (122, 222, 322, 422) for filtering the Raman scattered light; and a light detector (130, 230, 330, 430), configured to receive the Raman scattered light filtered by the wavelength filter (122, 222, 322, 422) and to provide an instantaneous response signal dependent on an intensity of the received Raman scattered light.

According to an aspect of the present inventive concept there is provided a laser system (100) for generating a frequency modulated continuous wave, FMCW, light signal (112), the system (100) comprising: a tunable laser (110) for generating the FMCW light signal (112); an optical measurement unit (120) configured to receive a portion (114) of the FMCW light signal (112), and to output, via an optical hybrid coupler (122), at least two angle diversity signals (124) based on a difference between a first and second signal (114a, 114b) formed by splitting the portion (114) of the FMCW light signal (112) wherein the second signal (114b) is delayed relative to the first signal (114a), wherein a pair of signals of the at least two angle diversity signals (124) have a fixed phase shift relative to each other; and a control unit (130) configured to: receive the at least two angle diversity signals (124) , estimate, based on the at least two angle diversity signals (124), a compensation needed for adjusting a non-linearity of a frequency chirp of the tunable laser (110), and output a corresponding control signal (132) to the tunable laser (110), wherein the control signal (132) is configured to improve a linearity of the frequency chirp.