113results about How to "High signal sensitivity" patented technology

A method of tracking a moving object in an image created by use of a synthetic aperture includes identifying a plurality of receive phase centers for an image collector, obtaining a synthetic aperture image using the plurality of receive phase centers, and reading a signature of the moving object based on the synthetic aperture image, where the reading of the signature includes identifying, in the synthetic aperture image, as a function of image collection time, a presence of the moving object. The reading of the signature may also include identifying a changing position of the moving object, and may include associating a plurality of range difference values with respective ones of the plurality of phase centers. A signature of a scatterer may be formed using only its associated ΔR-versus-time profile. The presence of a mover in the image may be determined by filtering the image to detect all or part of a signature, or by using one or more signatures to train a neural network to observe the mover directly.

A system and method autonomously and precisely track objects moving along a known course. The objects include, for example, racing horses, other racing animals, or racing vehicles. The system and method utilize modern satellite navigation satellite systems, signal processing, radio communications systems and computer processing to acquire and analyze performance data of the moving objects during competitions and during training and practice. The data acquisition is performed continuously at a rate of at least 1 Hz during the competition, training or practice even in the presence of objects which affect the quality of the signals received from the satellite system.

An optical hyperspectral / multimodal imaging method and apparatus is utilized to provide high signal sensitivity for implementation of various optical imaging approaches. Such a system utilizes long working distance microscope objectives so as to enable off-axis illumination of predetermined tissue thereby allowing for excitation at any optical wavelength, simplifies design, reduces required optical elements, significantly reduces spectral noise from the optical elements and allows for fast image acquisition enabling high quality imaging in-vivo. Such a technology provides a means of detecting disease at the single cell level such as cancer, precancer, ischemic, traumatic or other type of injury, infection, or other diseases or conditions causing alterations in cells and tissue micro structures.

A thermal infrared sensor is provided in a housing with optics and a chip with thermoelements on a membrane. The membrane spans a frame-shaped support body that is a good heat conductor, and the support body has vertical or approximately vertical walls. The object is to provide a thermopile infrared sensor in monolithic silicon micromachining technology, wherein the infrared sensor has a high thermal resolution capacity with a small chip size, a high degree of filling and a high response rate. The thermopile sensor structure consists of a few long thermoelements per sensor cell. The thermoelements being arranged on connecting webs that connect together hot contacts on an absorber layer to cold contacts of the thermoelements. The membrane is suspended by one or more connecting webs and has, on both sides of the long thermoelements, narrow slits that separate the connecting webs from both the central region and also the support body. At least the central region is covered by the absorber layer.

Disclosed is a solid-state imaging device which includes a group of elements, the group including at least color photoelectric conversion elements configured to convert light signals in first, second, and third wavelength ranges to electric signals, respectively, a white photoelectric conversion element configured to convert light signals in the wavelength range including the entire visible light range and a portion of the infrared light range to electric signals, and a light-shielded diode element configured to be shielded from light. A unit is formed by including the white photoelectric conversion element and the light-shielded diode element for one color photoelectric conversion element, and within the unit, the white photoelectric conversion element is electrically connected with the light-shielded diode element by way of an overflow path. A camera provided with the solid-state imaging device is also disclosed.

A pulse running time filling level sensor includes a sampling device for sampling an IF signal at discrete instants and for converting the sampling values into digital sampling values, and a digital signal processing device for subsequent processing of the digital sampling values by calculating at least one new value characterizing the IF curve from respectively exactly two digital sampling values.

A biosensor utilizing bio-functionalized magnetic nanoparticles is provided. An external magnetic field is applied to a suspension of magnetic nanoparticles. A linearly polarized incident light is applied to the suspension of magnetic nanoparticles. A photocurrent from polarized light scattering by bio-functionalized magnetic nanoparticles in liquid is detected. The magneto-optic sensing technique is applied to a micro-fluidic channel for rapid and sensitive detection with a small sample amount, and subsequent magnetic separation for detoxification. This technique is used for the detection of Brownian relaxation with time sweep as well as frequency sweep. The magneto-optical sensor enables rapidly detecting changes in local dynamic properties of the magnetic nanoparticles in liquids and magnetic modulation of ferromagnetic particles in liquid provides increased signal sensitivity.

Disclosed is a solid-state imaging device which includes a group of elements, the group including at least color photoelectric conversion elements configured to convert light signals in first, second, and third wavelength ranges to electric signals, respectively, a white photoelectric conversion element configured to convert light signals in the wavelength range including the entire visible light range and a portion of the infrared light range to electric signals, and a light-shielded diode element configured to be shielded from light. A unit is formed by including the white photoelectric conversion element and the light-shielded diode element for one color photoelectric conversion element, and within the unit, the white photoelectric conversion element is electrically connected with the light-shielded diode element by way of an overflow path. A camera provided with the solid-state imaging device is also disclosed.

The present invention relates to an electrochemical biosensor for detecting hydrogen peroxide, a preparation method and an application thereof. The preparation method comprises the steps of (1) synthesizing the silica-three-dimensional graphene composite material; (2) doping nitrogen and carbon into the synthesized silica-three-dimensional graphene composite material; (3) pretreating a glassy carbon electrode; (4) preparing the glassy carbon electrode modified by the nitrogen-carbon-doped silica-three-dimensional graphene composite material through the dispensing method; (5) putting the glassy carbon electrode into a chloroauric acid solution to prepare gold nanoparticle-nitrogen-carbon-doped silica-three-dimensional graphene glassy carbon electrode through chronoamperometry; (6) dipping the glassy carbon electrode into a double-sulfhydryl-modified GDNA solution and cultivating for 2-4 hours; (7) dipping the composite electrode into a hemin solution for 10-14 hours. The electrochemical biosensor is good in stability and reproducibility, high in specificity and sensitivity, fast and simple and convenient to operate. The electrochemical biosensor can be used for detecting the content of hydrogen peroxide in biological samples, cosmetics and the like.

Apparatus and methods of fabrication and use of highly effective laser-induced graphene (LIG) electrodes including for electrochemical sensing and catalysis. One example is a sensitive and label-free laser-induced graphene (LIG) electrode functionalized for a specific application. One example of functionalization with antibodies, an enzyme, or an ionophore to electrochemically quantify a target species The LIG electrodes were produced by laser induction on film having a carbon precursor (e.g. polyimide) in ambient conditions, and hence circumvent the need for high-temperature, vacuum environment, and metal seed catalysts commonly associated with graphene-based electrodes fabricated via chemical vapor deposition processes. These results demonstrate how LIG-based electrodes can be used for electrochemical sensing in general. Other examples of applications include, but are not limited to, ion-sensing, pesticide monitoring and detection, and water splitting, using the LIG-based electrode(s) adapted for those purposes.

A thermal infrared sensor is provided in a housing with optics and a chip with thermoelements on a membrane. The membrane spans a frame-shaped support body that is a good heat conductor, and the support body has vertical or approximately vertical walls. The thermopile sensor structure consists of a few long thermoelements per sensor cell. The thermoelements being arranged on connecting webs that connect together hot contacts on an absorber layer to cold contacts of the thermoelements. The membrane is suspended by one or more connecting webs and has, on both sides of the long thermoelements, narrow slits that separate the connecting webs from both the central region and also the support body. At least the central region is covered by the absorber layer.

A display device can include a display panel touch block groups, each including touch sensors, each touch sensor corresponds to one or more pixels defined by data lines and gate lines; a data driver that generates and supplies a modulated source signal for display data to a data line; a gate driver that generates a modulated scan-on signal for writing the modulated source signal to a pixel and supplies the modulated scan-on signal to the gate lines; and a touch sensor driver that supplies a touch driving signal to touch wires connected to corresponding touch sensors in each of the touch block groups, and selectively senses for touch on a touch block group, except for a restricted touch block group overlapping a gate line that is supplied with the modulated scan-on signal, in which the modulated source signal or the modulated scan-on signal is synchronized with the touch driving signal.

A sunlight tracking sensor for providing a control signal via amplifier to a sunlight tracking motor is composed of a sunlight attenuating plate, a small box with central bulkhead, and 4 linear photosensitive elements divided into two groups. Two elements in one group are respectively arranged at both sides of central bulkhead in said small box and serially connected. Two signal output lines are led out from the middle points of two serial connections. Two groups are parallelly connected to power supply. Its working principle is also disclosed.

The invention comprises an inertial sensor comprising a frame, a proof mass, a first resonant element, the first resonant element being fixed to the frame and electrostatically coupled to the proof mass, and a second resonant element, the second resonant element being fixed to the frame, adjacent to the first resonant element such that there is substantially no electrostatic coupling between the second resonant element and the proof mass. A coupling is provided between the first resonant element and the second resonant element. A drive means is coupled to the first and second resonant elements for vibrating the first and second resonant elements and a sensor assembly is provided for detecting the amplitude of vibration of at least one of the resonant elements.

A metal detection apparatus that uses one or more operating frequencies. The metal detection apparatus comprises, among other things, a transmitter unit that provides transmitter signals to a transmitter coil that is coupled to a receiver coil, which is connected to the input of a receiver unit. The transmitter unit comprises a frequency generator that provides an operating frequency to the input of an amplifier stage, whose output is connected via a transformer to the transmitter coil. The amplifier stage is connected to a first tap and the transmitter coil is connected to a second tap of the same transformer winding of the transformer. A resonant circuit is formed that is tuned to the operating frequency, and can be tuned optimally and independently of other parts of the transmitter unit.

A method of preparing a hydrogen-containing 13C compound test sample exhibiting an enhanced 13C nuclear magnetic resonance (NMR) signal when exposed to a 13C NMR pulse sequence is disclosed. In the disclosed method, the hydrogen-containing 13C compound is mixed with hyperpolarized 129Xe in the gaseous state, and the mixture is subsequently frozen within a magnetic field. The magnetic field strength is then reduced sufficiently so that spin polarization is transferred from the hyperpolarized 129Xe to the compound. The magnetic field strength is then increased, and the mixture is thawed to obtain the test sample.

A reconfigurable multi-output antenna (16) is disclosed comprising: one or more radiating elements (12, 14), at least two matching circuits (42, 44, 50, 52) coupled to the or each radiating element (12, 14) via e.g. a splitter (30, 32) or a duplexer; and wherein each matching circuit (42, 44, 50, 52) is associated with a separate port (38, 40, 46, 48) arranged to drive a separate resonant frequency so that the or each radiating element (12, 14) is operable to provide multiple outputs simultaneously. The resonant frequency of each output is independently controllable by each matching circuit, with good isolation with each other port, thereby offering very wide operating frequency range with simultaneous multi-independent output operations. Also described is a multi-output antenna control module for coupling to one or more radiating elements, an antenna structure and an antenna interface module. A reconfigurable multi-output antenna is disclosed comprising: one or more radiating.

The optical device has a substrate having a dielectric body on a surface, a metal fine structure formed of a plurality of metal nanostructures formed on the dielectric body, and an organic molecular film formed on the dielectric body between the plurality of metal nanostructures, and adapted to capture target molecule. The plurality of metal nanostructures each has a diameter in a planar view of 1 through 500 nm, and has a distance between the metal nanostructures adjacent to each other of no smaller than 0.1 nm and smaller than 10 nm. The plurality of metal nanostructures has the distance between the metal nanostructures adjacent to each other at a second height position H2 from the surface of the dielectric body larger than a first distance between the metal nanostructures adjacent to each other at a first height position H1 (H2>H1) from the surface of the dielectric body.

A reconfigurable multi-output antenna (16) is disclosed comprising: one or more radiating elements (12, 14), at least two matching circuits (42, 44, 50, 52) coupled to the or each radiating element (12, 14) via e.g. a splitter (30, 32) or a diplxer; and wherein each matching circuit (42, 44, 50, 52) is associated with a separate port (38, 40, 46, 48) arranged to drive a separate resonant frequency so that the or each radiating element (12, 14) is operable to provide multiple outputs simultaneously. The resonant frequency of each output is independently controllable by each matching circuit, with good isolation with each other port, thereby offering very wide operating frequency range with simultaneous multi-independent output operations. Also described is a multi-output antenna control module for coupling to one or more radiating elements, an antenna structure and an antenna interface module. A reconfigurable multi-output antenna is disclosed comprising: one or more radiating

A device for measuring oxygen uptake and carbon dioxide production by a respiring subject based on the use of absorption spectroscopy. An absorption spectrometer using cavity enhanced absorption spectroscopy at 763 nm to measure oxygen concentration and direct absorption or wavelength modulation spectroscopy at 2.0035 μm for carbon dioxide concentration is incorporated into a breathing tube in proximity to the respiring subject. This provides measurements of oxygen and carbon dioxide concentration with a good temporal resolution which can be combined with measurements of flow rate as a function of time to obtain oxygen uptake and carbon dioxide production on a breath-by-breath basis. The device can also measure the concentration of water vapor and of anaesthetic gases in exhaled breath.

A display device can include an organic light emitting layer positioned between an anode electrode and a cathode electrode; an encapsulation layer disposed on the organic emission layer to protect the organic emission layer; a touch layer disposed on the sealing layer, the touch layer having a plurality of touch sensors configured to be driven according to a touch driving signal; a ground modulation signal generator configured to generate a ground modulation signal having a same amplitude as an amplitude of the touch driving signal; and a driving voltage supply configured to generate a modulated driving voltage based on the ground modulation signal, and apply the modulated driving voltage to a driving voltage supply line in synchronization with the touch driving signal within a same display frame.

The invention discloses a method and a system for monitoring and analyzing air. The method comprises the following steps: collecting gas at the site, and carrying out pressurization on the on-site gas, wherein, the pressure applied on the on-site gas is equal to or less than a preset pressure threshold; heating up the pressurized gas to a preset temperature threshold; detecting the heated gas by using a sensor group to obtain parameters of various gasses in the heat gas and generate multi-channel detection signals of the parameters of the various gasses; analyzing the multi-channel detection signals to obtain the gas status of the on-site gas. The invention further discloses a system for monitoring and analyzing air. According to the invention, signal stability and resolution are effectively raised, the lowest checked out thresholds of the whole system is reduced by an order of magnitude, and the technical requirements of air quality monitoring are completely satisfied.

A pulse running time filling level sensor includes a sampling device for sampling an IF signal at discrete instants and for converting the sampling values into digital sampling values, and a digital signal processing device for subsequent processing of the digital sampling values by calculating at least one new value characterizing the IF curve from respectively exactly two digital sampling values.

A method of forming an embedded read element is used in the fabrication process of a magnetic head assembly including write and read heads. In this method, three photolithographic patterning steps are applied for defining the designed height of the embedded read element, defining its designed width, and connecting it with conducting layers, respectively. An in-line lapping guide is also formed with a spacing in front of the embedded read element. In this method, two mechanical lapping steps are applied, one monitored by measuring the resistance of a parallel circuit of the embedded read element and the in-line lapping guide, and the other monitored by measuring the GMR response of the embedded read element.

The invention provides a rotation angle sensor for an automobile steering wheel, particularly an angle sensor for the automobile steering wheel based on a radially magnetized thin film. The angle sensor comprises a master gear (1) driven by a master rotating shaft of the automobile steering wheel, a pinion (2) and a bull wheel (3) which are engaged with the master gear (1) and made of ceramic materials, two giant magnetic resistance induction chips arranged on a circuit board (6), and a micro processor, wherein the two giant magnetic resistance induction chips face towards the surfaces of the bull wheel and the pinion respectively, and are connected with the micro processor through serial peripheral interfaces (SPI); and the bull wheel and the pinion are made of the ceramic materials, and are coated with high-magnetism medium thin films. The bull wheel and the pinion made of the ceramic materials have high anti-abrasion performance, high-temperature resistance, high anti-corrosion performance and high reliability, can be relatively thin, are easy to mount and fix, and can be produced in a large batch; furthermore, a magnetic thin film medium has the advantages of small volume, high magnetic intensity, high magnetic field directivity, simple design, high reliability and the like.

The present invention provides a method for electronic measurement. According to the invention, the sensitivity of a method for electronic measurement may be improved, carried out by the principle of heterodyne reception with the steps of broadcast of pulsed electromagnetic radiation (ES) with at least one pulse repetition frequency, reception of back-scattered radiation (RS), whereby the back-scattered radiation (RS) is converted into a received signal, mixing of the received signals, determination of at least one time parameter from the at least one output signal, whereby on mixing the received signals at least two pulsed mixed signals are mixed to give at least two output signals and the at least two mixed signals are phase-shifted relative to each other.