747 results about "Ultrasonic transmission" patented technology

A wireless power transmission system includes a wireless power transmitting apparatus and a wireless power receiving apparatus. The wireless power transmitting apparatus includes a signal generator and an ultrasonic transmitting unit. The ultrasonic transmitting unit generates and outputs a focused ultrasonic wave according to a signal outputted from the signal generator. The wireless power receiving apparatus includes an ultrasonic receiving unit and a power conversion unit. The ultrasonic receiving unit receives the focused ultrasonic wave outputted from the wireless power transmitting apparatus and converts the focused ultrasonic wave into electrical power energy. The power conversion unit performs a power conversion on the electrical power energy and thereby provides the converted electrical power energy to a back-end circuit. The ultrasonic signal can also be encoded in the transmitting unit and subsequently decoded in the receiving unit as a means to remotely control the back-end circuit in the receiving unit.

It becomes possible to obtain high sound pressure in a high frequency domain by a capacitive ultrasonic transducer which comprises a membrane on which one electrode is formed, a cavity constructed in its backface, and a substrate on which these are mounted and supported and on whose surface an electrode is provided, on a surface in an ultrasonic transmission and reception side, characterized in that the membrane comprises two or more layers, and at least one layer of them comprises a high dielectric constant film.

[OBJECTS AND PROBLEMS] Relating to a mist generator capable of emitting any of chemical substances used in life, such as perfumes, pharmaceuticals and pesticides, in the form of fog or vapor. An object of the invention is to attain means for efficiently atomizing liquid, means for easily and rapidly switching the type of chemical substance emitted and a compact apparatus of good maintainability. [MEANS FOR SOLVING PROBLEMS] An apparatus comprises an ultrasonic transducer; an ultrasonic propagation medium disposed so as to fill a plane of vibration of the transducer; liquid retaining means disposed so as to be in contact with an end face of the medium; and an ultrasonic focusing reflecting mechanism (concave reflection mirror) disposed in an ultrasonic propagation path, thereby the apparatus attains discharging into air and atomization of the liquid by means of ultrasonic waves. Atomization efficiency is enhanced by the use of an ultrasonic reflection tube, and mist emission is carried out. Use is made of a compact liquid container equipped at its bottom with an ultrasonic transmission membrane. Various types of liquids can be atomized by changing the direction of ultrasonic course. Mist can be emitted by means of a thermal current as heating means. IC tag is attached to the liquid retaining means or liquid injection means.

Described herein are devices and systems that transmit data from a first device using an ultrasonic digital modem to a second device that receives the ultrasonic signal and can interpret the ultrasonic signal. The second device may be a telecommunications device such as a smartphone running an ultrasonic digital modem receiver application. In particular, devices, systems and methods for encoding and transmitting an ultrasonic signal that includes both digital (e.g., FSK) and analog signal components. Such hybrid ultrasonic signals may efficiently and reliably transmit information, and particularly biological information. Also described herein are devices, systems and methods for securely transmitting ultrasonic signals using encryption keys that may be read by the receiving device using a separate (e.g., non-ultrasound modality) from the transmitting device.

A system and method to be used in ultrasonic lithotripsy of a stone in a ureter, the system including a catheter having a probe tip capable of transmitting and receiving ultrasonic energy. The catheter can include an inflatable balloon adjacent to the probe tip, the balloon capable of pooling some urine in the ureter to be used as an ultrasonic transmission media. The ultrasonic probe is connected to a source of energy capable of driving the probe tip to deliver ultrasonic energy of a high frequency and relatively low energy to image a stone. Then the probe can be connected to a source of energy capable of driving the probe to deliver a low frequency, high energy ultrasonic to disintegrate the stone.

An ultrasonic flow meter permitting easy insertion and removal of a tube or conduit. A partial ring transducer or partial cylinder transducer is used to permit easy insertion and removal of a flexible tube in an ultrasonic flow meter for measuring fluid flow. In another embodiment a split ring or split cylinder transducer is used to facilitate easy removal and insertion of a tube or conduit in which fluid flow is to be measured. In another embodiment a clamping system is used to securely hold and couple a tube or conduit within the ultrasonic flow meter system. The present invention is conveniently adapted to hold flexible tubes and in particular disposable flexible tubes often used in the medical industry.

An ultrasonic probe deployment device in which an ultrasound-transmitting liquid forms the portion of the ultrasonic wave path in contact with the surface being inspected (i.e., the inspection surface). A seal constrains flow of the liquid, for example preventing the liquid from surging out and flooding the inspection surface. The seal is not rigid and conforms to variations in the shape and unevenness of the inspection surface, thus forming a seal (although possibly a leaky seal) around the liquid. The probe preferably is held in place to produce optimum ultrasonic focus on the area of interest. Use of encoders can facilitate the production of C-scan area maps of the material being inspected.

The invention provides a capsule endoscope system having an ultrasonic positioning function and belongs to the technical field of medical instrument auxiliary devices. The capsule endoscope system solves the problem that the complex degree of a positioning system is increased in the prior art. The capsule endoscope system having the ultrasonic positioning function comprises a capsule endoscope and an external control unit. An MCU control circuit, a miniature ultrasonic transmission module and a radio frequency wireless transmission module are arranged in the capsule endoscope, wherein the miniature ultrasonic transmission module and the radio frequency wireless transmission module are connected with the MCU control circuit. The external control unit comprises a microcontroller, a radio frequency receiving module and an ultrasonic receiving and processing unit, wherein the radio frequency receiving module and the ultrasonic receiving and processing unit are connected with the microcontroller, an audio and video signal processing module is connected between the microprocessor and the radio frequency wireless receiving module, and the microcontroller can obtain the accurate position of the capsule endoscope in the body of a patient in real time through a sound velocity and temperature compensation formula and a spatial orientation algorithm. The capsule endoscope system can obtain the accurate position of the capsule endoscope in the body of the patient in real time and is high in positioning accuracy.

A system being suitable for being secured substantially adjacent to a surface of a subject so as to effect delivery of at least one substance through the surface and into the subject. The system includes at least one aperture for receiving at least one ultrasonic transmission. The at least one substance is releasably secured substantially adjacent to the at least one aperture. A sonic member is disposed with respect to the at least one aperture so as to communicate the at least one transmission to the at least one substance so as to effect the delivery of the at least one substance through the surface of the subject.

The invention belongs to the technical field of non-destructive testing and particularly discloses a phased array ultrasonic testing method based on improved dynamic depth focusing. The method comprises the following five steps of: performing phased array ultrasonic transmission and reception, discriminating a defect, calculating delay time, post-processing echo signals and reconstructing a B type drawing. The ultrasonic echo signals are accurately focused to the position of the defect, so that the problem that the defect is difficult to identify when the signal-to-noise ratio of a reflection echo signal of the defect is too low can be solved; by the method, the problem that the deviation exists between an ideal focus and an actual focus because a material of a tested workpiece is nonuniform can be effectively solved, and the testing resolution of phased array ultrasonic testing of layered media and anisotropic media can be effectively improved; and by the method, the problems that ultrasonic imaging results are fuzzy and distorted due to errors of hardware systems such as phased array flaw detectors can also be solved, and the quality of phased array ultrasonic imaging can also be improved.

A tissue biopsy device uses ultrasonic imaging to guide the biopsy needle. An ultrasonic imaging device comprises three acoustically coupled chambers with an ultrasound transducer in a first chamber, at least a portion of an ultrasound detector in the second chamber and the portion of patient anatomy to be imaged placed in the third chamber, which is intermediate the first and second chambers. The three chambers are filled with an acoustically transmissive liquid. One or more of the end walls dividing the first and third chambers and second and third chambers may be movable to form compression plates that are used to retain the patient anatomy in a fixed position during the imaging and biopsy process. When a structure, such as a lesion, has been located, the imaging may be used to determine the precise location of the lesion in three dimensions. The ultrasonically transmissive fluid is drained from the central third chamber with ultrasonic coupling occurring through the ultrasonically transmissive compression plates and the imaged patient anatomy. This permits real-time imaging of the patient anatomy during the biopsy process. The three-dimensional coordinates are used to provide a manual guide for insertion of the biopsy needle. Light bars may be projected onto the external anatomy of the patient to indicate the desired point of entry of the biopsy needle. The physician may use the real-time imaging to view both the lesion and the biopsy needle. In an alternative embodiment, a biopsy needle may be automatically positioned at the location of the lesion by a three-dimensional positioning system.

A wearable ultrasound device and method of using the device includes a power controller with a power source and at least one integrated circuit that delivers electrical power to an applicator. The applicator is electrically coupled to the power controller and a surface of the applicator transmits ultrasound to a wearer for a given duration. The applicator includes radio frequency (RF) drive electronics, an ultrasound transducer coupled to the drive electronics, a monitoring apparatus that includes a thermal cutoff coupled to the drive electronics, where the monitoring apparatus monitors a temperature of the applicator surface and the thermal cutoff turns off the applicator, if the temperature exceeds a pre-defined threshold, and a coupling bandage coupled to the applicator, where the bandage positions the surface of the applicator proximate to a wearer at a location on the body of a wearer.

A method for displaying scanned ultrasound images of tissue employs an apparatus including an ultrasound probe mounted to a mechanical head. A three-dimensional positioning system mounts the head for positioning the probe in proximate orthogonal relation to the tissue. A computer controls the three-dimensional positioning system thereby moving the probe during a scan. The probe transmits high frequency ultrasound waves whose nominal frequency is included within the range from 30 to 100 MHz and with a large pass band, adapted to frequencies reflected by the tissue. The beams of ultrasound transmission are focused in a given zone of the tissue over a vertical penetration distance of between 20 and 30 mm. Reflected signals are acquired and processed for display.

A volume adjuster comprises a volume adjusting unit and a voice output unit, wherein the volume adjusting unit receives a sound source signal and adjusts the volume of the sound source, and the voice output unit outputs a voice corresponding to the sound source signal. The volume adjuster further comprises a memory for storing the reference volumes corresponding to each listen distance; an ultrasonic transmitter for transmitting ultrasonic wave and generating a time driving unit for receiving and time driving signal and timing; the ultrasonic transmitters reflects the wave; a check unit checks if the frequency of the reflected wave changes, and if the frequency of the reflected wave changes, the timing unit outputs the transmission time from the emission to the receiving of the ultrasonic wave; a ranging unit for calculating a listen distance according to the ultrasonic transmission time and the ultrasonic transmission speed; a controller selecting a reference volume adapted with the listen distance; and the volume adjusting unit adjusting the volume to the reference volume. Additionally, the invention provides a volume automatic adjusting function.

Three times of ultrasonic transmissions are executed in positive, negative and negative polarities with reference to a predetermined rate period, for each of a plurality of ultrasonic scan lines, and echo signals caused and generated by the ultrasonic waves of the respective transmissions are received at the same rates. At each scan line, the echo signal based on the positive-polarity ultrasonic wave of the first transmission and the echo signal based on the negative-polarity ultrasonic wave of the second transmission are added up, thereby to generate an ordinary mode image. Besides, at each scan line, the echo signal based on the positive-polarity ultrasonic wave of the first transmission and the echo signal based on the negative-polarity ultrasonic wave of the third transmission are added up, thereby to generate puncture mode image data. The generated ordinary mode image and puncture mode image are displayed in a predetermined aspect.

An apparatus and method for transmitting data and power through a metal barrier using ultrasonic waves, having ultrasonic transmission channels through the barrier formed by coupling ultrasonic transducers on opposite sides of the barrier. A power transmitter sends power over a channel and forward and reverse data transmitters send forward and reverse data signals by orthogonal frequency-division multiplexing OFDM over a separate channel. The data signals are made up of plural sub-carriers at plural different sub-carrier frequencies with none of the sub-carriers of the forward transmission signal being at a power harmonic frequency.

A method for characterizing body tissue, comprising:a) transmitting ultrasound into tissue of a body, heating the body tissue by less than 3 degrees Celsius;b) measuring temperature of the tissue, at one or more locations at one or more times during the ultrasound transmission, following the ultrasound transmission, or both; andc) using the temperature measurement to determine at least one property of the body tissue, based on differences in absorption of ultrasound, differences in cooling rate of the tissue following the ultrasound transmission, or both.

The invention relates to a wastewater-degradation microwave photocatalytic device beneficial to inhibiting energy unnecessary dissipation, belonging to the technical field of wastewater treatment. The invention aims to totally solve the problem of energy unnecessary dissipation since the wastewater body absorbs abundant microwave energy, and the problem of scaling on the outer side surface of the quartz tube for an electrodeless ultraviolet lamp shield in the existing microwave photocatalytic degradation technique of industrial wastewater containing organic pollutants. The electrodeless ultraviolet lamp is arranged in a metallic wire-cage-shaped transparent microwave restrictor, microwaves are introduced into the microwave restrictor, so that the microwave restrictor can inhibit the microwave from unnecessary dissipation. On the basis of the structure, the design volume of the reactor is allowed to be greatly expanded, thereby greatly enhancing the single-tank wastewater treatment capacity of the reactor; and an ultrasonic transducer is arranged on the inner side surface of the side wall of the microwave photocatalytic reactor, thereby instantly clearing the scales under the action of high-frequency ultrasonic by using the ultrasonic transmission of the liquid medium.

A first object is to provide a method for evaluating large-sized inclusions in a bearing steel. The method enables quantitative evaluation of large-sized inclusions even if the steel has a high degree of cleanliness. Further, a second object is to provide an appropriate bearing steel evaluated by the method for evaluating large-sized inclusions. Further, a third object is to provide a rolling bearing capable of eliminating short life products and cracked products and providing longer lifetime for entire bearings. In order to achieve the first object, a round bar formed of a bearing steel to be evaluated and an ultrasonic probe are placed in an ultrasonic transmission medium, and the size and number of large-sized inclusions that are present in the flaw detection volume are measured to estimate the existence probability of large-sized inclusions in the bearing steel to be evaluated. The second object is achieved by specifying large-sized inclusions that are present in the bearing steel in accordance with the method for evaluating large-sized inclusions. Further, to achieve the third object, a rolling bearing is manufactured from a seamless steel tube, as material, having a diameter of 180 mm or less and a wall thickness of 25 mm or less, and ensured that it does not include a defect having a length of 1 mm of more at its material stage.

An ultrasound sensor for a vehicle has a housing which is fixedly arranged at a vehicle inner side of a periphery member of the vehicle, an ultrasound vibrator for sending and receiving ultrasound, and an ultrasound transferring member which is constructed of a different material from that of the housing to have an acoustic impedance with a medium value between an acoustic impedance of the ultrasound vibrator and that of the periphery member. The ultrasound vibrator is accommodated in the housing and fixed to an end portion of the housing, which faces the periphery member. The ultrasound transferring member is arranged at the end portion of the housing, and contacts both the ultrasound vibrator and the periphery member of the vehicle.

An ultrasonic transmission / reception apparatus which can image both a minute tissue around a bone part in an object and a minute tissue inside the bone, at a high resolution. The apparatus includes a system control unit which controls the synthesizers so that a first ultrasonic wave may be transmitted from one of the transmission elements while its frequency is being swept, and that a second ultrasonic wave may be transmitted from the other transmission element while its frequency is being swept with a predetermined difference frequency held relative to the frequency of the first ultrasonic wave, a signal processing unit which subjects the detection signal of the ultrasonic echo to predetermined signal processing, a signal processing unit which subjects the detection signal of the vibro-acoustic sound to predetermined signal processing, and a display-image arithmetic unit which generates B-mode image data based on the detection signals subjected to the signal processing.

Devices and method are provided for ultrasound transmission without the need for external couplants, such as gels, which are typically used in conventional ultrasound procedures. In particular, ultrashields are provided for use with ultrasound probes, wherein the ultrashields have specialized layers to provide an uninterrupted pathway of acoustic conductance from the probe to the surface of the body throughout the procedure while introducing minimal to no attenuation of ultrasound wave transmission. In addition, combinations of ultrashields and probe covers are provided to provide additional features such as a microbial barrier.

An ultrasonic sensor unit includes an ultrasonic transmission sensor array having a plurality of ultrasonic transmission sensors configured and arranged to transmit ultrasonic waves, and an ultrasonic reception sensor array having a plurality of ultrasonic reception sensors configured and arranged to receive the ultrasonic waves. The ultrasonic reception sensor array re coupled to the ultrasonic transmission sensor array so that the ultrasonic transmission sensors and the ultrasonic reception sensors do not overlap in planar view. One of the ultrasonic transmission sensor array and the ultrasonic reception sensor array include a plurality of through-holes through which one of the ultrasonic transmission sensors and the ultrasonic reception sensors provided in the other of the ultrasonic transmission sensor array and the ultrasonic reception sensor array are exposed.