268results about "Converting sensor ouput using wave/particle radiation" patented technology

The invention provides a wireless passive surface acoustic wave temperature, humidity and pressure sensor and a preparation method thereof, and belongs to the field of surveying and mapping devices. The interdigital transducer is arranged in the middle of the three areas; each pair of reflecting gratings is arranged on the two sides of the interdigital transducer; the resonant frequency of the resonant acoustic wave sensors is adjusted by adjusting the interdigital period of each interdigital transducer and the period of the reflecting grating, and the three resonant acoustic wave sensors are made to detect the surface temperature, the surface humidity and the surface pressure respectively; and the coating is coated on the surface of the area for detecting the surface humidity. Different structural designs are selected based on the surface acoustic wave principle, the resonant frequency of the resonant sensor is adjusted by changing the interdigital period of the interdigital transducer and the period of the reflecting grating, and multi-parameter detection of temperature, humidity and pressure is achieved on the same substrate.

The invention relates to the field of ultrasonic sensors, provides an ultrasonic sensor and a preparation method thereof, an ultrasonic fingerprint module and electronic equipment, and at least facilitates improvement of the performance of the ultrasonic sensor. The preparation method comprises the following steps: forming a bottom electrode layer on a substrate; forming a piezoelectric layer on the bottom electrode layer; a top electrode is formed on the piezoelectric layer, and the top electrode layer is prepared through the steps that the surface of the piezoelectric layer is treated, so that the surface of the piezoelectric layer has hydrophilicity; carrying out silanization treatment on the piezoelectric layer to form a self-assembled molecular layer; soaking the substrate subjected to silanization treatment in a pre-polymerization solution, so that the self-assembled molecular layer and monomers in the pre-polymerization solution are polymerized to form an adhesion layer; forming a catalyst layer on the adhesion layer; the substrate with the catalyst layer is placed in a chemical plating tank, so that a catalyst in the catalyst layer catalyzes metal ions in the chemical plating tank to form a metal layer, and the adhesion layer and the metal layer form a top electrode layer; and forming a protection layer on the top electrode layer.

The invention discloses a PCCP pipeline three-dimensional space positioning online monitoring system based on a distributed optical fiber sound field. The PCCP pipeline three-dimensional space positioning online monitoring system comprises a signal processing module, a DAS system, and a first optical cable, a second optical cable and a third optical cable which are distributed and installed on the inner wall of a PCCP pipeline. The average refractive indexes of the first optical cable, the second optical cable and the third optical cable are consistent, and the phase difference between every two optical cables is 120 degrees; the DAS demodulates to obtain a sound wave signal transmitted by a pipe wall, water or air; the signal processing module obtains a vibration source type according to vibration signal feature analysis, and calculates a longitudinal position of a vibration source based on arrival time of sound wave signals propagated in various paths; and calculating the section position of the vibration source according to the arrival time of the vibration signal transmitted by the pipe wall and received by the optical cable and the section position of the optical cable. According to the method, external invasion and wire breakage of the PCCP can be monitored in real time, and the positions of the external invasion and the wire breakage can be accurately positioned.

A flexible ultrasonic sensor with an ultrasonic-driven liquid metal as a conductive material and a manufacturing method thereof are provided. The method includes: pumping a liquid metal into an inflow channel with a pre-embedded copper wire in an ultrasonic pumping mode; in a vacuum atmosphere, enabling a encapsulation film subjected to oxygen plasma treatment to slowly fall on the previously obtained material through a clamping apparatus; clamping a piezoelectric organic polymer by the obtained material and a liquid metal electrode bottom plate, enabling the piezoelectric organic polymer to be located at a central position through a positioning plate, and pasting a flexible encapsulation layer to a lower part of a whole device in the vacuum atmosphere; and sintering upper and lower layers of liquid metal electrodes by power ultrasound after heating to ensure electrical connectivity, thereby completing manufacturing of the flexible ultrasonic sensor.

The invention belongs to the technical field of sensors, and particularly relates to a liquid phase sensor based on longitudinal surface acoustic waves and a preparation method and application thereof. The liquid phase sensor based on the longitudinal surface acoustic wave comprises a delay line type surface acoustic wave device and a sensitive element, the delay line type surface acoustic wave device comprises a substrate, a temperature compensation layer and a piezoelectric layer which are arranged in a stacked mode, an interdigital transducer is arranged on the surface of the piezoelectric layer, and the piezoelectric layer is made of tangential lithium niobate or lithium tantalate single crystals. A high-speed longitudinal surface acoustic wave (LSAW) mode without body wave leakage is excited by adopting a heterogeneous acoustic layer structure of an interdigital electrode / a piezoelectric thin layer / a temperature compensation layer / a high-sound-velocity substrate, and a delay line type low-loss and high-sensitivity sensor for a liquid phase is constructed by utilizing the LSAW. Compared with a traditional rayleigh and love mode SAW sensor, the LSAW-based sensor has the advantages that the attenuation coefficient is greatly reduced, the sensitivity is greatly improved, and the LSAW-based sensor has a good application prospect in a liquid phase environment.

Disclosed in the present invention is a pin ultrasonic sensor convenient for automatic production, comprising: pins, wherein two pins are provided; a fixing member, wherein each pin is fixed in the fixing member by means of injection molding, and at least one clearance notch is formed on the fixing member on one side of the pin; isolating sleeves, wherein the isolating sleeves are arranged on the two ends of the fixing member; a housing, wherein a mounting cavity is formed in the housing; and a ceramic piece, wherein the ceramic piece on which a wire is welded is arranged in the mounting cavity, the isolating sleeves are arranged in the housing and used for positioning the fixing member, one end of the pin is connected to the wire, and the interior of the mounting cavity is sequentially filled with a foaming adhesive layer and a sealant layer. Since at least one clearance notch is formed on the fixing member on one side of the pin, a manipulator for welding the wire on the ceramic piece can pass through the clearance notch, thereby achieving automatic welding of the wire and the ceramic piece.

The utility model discloses a portable acoustic imager, which relates to the technical field of imagers and comprises a shell. A displayer and a square microphone array disc are installed on the two sides of the shell respectively, a plurality of microphone probes are arranged on the microphone array disc, a visible light imaging module surrounded by the microphone probes is arranged in the center of the microphone array disc, and thermal imaging modules not surrounded by the microphone probes are arranged at the corners of the microphone array disc. A mainboard and a power supply module for supplying power to the mainboard are arranged in the shell; the mainboard is connected with the microphone probe, the visible light imaging module and the thermal imaging module through the signal adapter plate; according to the utility model, under complicated field working conditions such as similar gas path system abnormal points, equipment abnormal hot spots, poor cable contact, circuit overload, power supply faults and the like, the acoustic-thermal imaging integrated design can cover the two fields of gas leakage and thermal imaging detection, and early prediction and rapid diagnosis and maintenance can be effectively carried out.

The invention relates to the field of intelligent detection of power transmission and transformation equipment, in particular to an ultrasonic sensor for the power transmission and transformation equipment. The ultrasonic sensor comprises a substrate, a bottom electrode layer, a top electrode layer and a three-dimensional piezoelectric film, the three-dimensional piezoelectric film is located between the bottom electrode layer and the top electrode layer, the three-dimensional piezoelectric film is integrally arranged on the substrate, and the three-dimensional piezoelectric film is insulated from the bottom electrode layer and the top electrode layer; the bottom electrode layer and the top electrode layer are composed of interdigital electrode arrays. The three-dimensional piezoelectric film is formed by compositing nanowires and a polyvinylidene fluoride heterostructure through an electrostatic spinning process. The nanowire is a rare earth element doped ZnO nanowire synthesized by a hydrothermal method. According to the invention, the material sensitivity is improved, the stability of the ultrasonic sensor in a high-temperature / high-humidity environment is enhanced, and high-precision detection of high-frequency ultrasonic waves generated by partial discharge of power transmission and transformation equipment is realized.

A rotation sensor system includes a rotatable target object configured to rotate about a rotational axis in a rotation direction; a first millimeter-wave (mm-wave) metamaterial track coupled to the rotatable target object, where the first mm-wave metamaterial track is arranged around the rotational axis, and where the first mm-wave metamaterial track includes a first array of elementary structures having at least one first characteristic that changes around a perimeter of the first mm-wave metamaterial track; at least one transmitter configured to transmit a first electro-magnetic transmit signal towards the first mm-wave metamaterial track, where the first mm-wave metamaterial track converts the first electro-magnetic transmit signal into a first electro-magnetic receive signal; at least one receiver configured to receive the first electro-magnetic receive signal; and at least one processor configured to determine a rotational parameter of the rotatable target object based on the received first electro-magnetic receive signal.

The invention discloses an ultrasonic transducer and an ultrasonic sensor, and relates to the field of ultrasonic sensors.The ultrasonic transducer comprises a probe assembly, a flexible sleeve and a rigid connecting piece, and the probe assembly is arranged in a barrel shape or a step barrel shape; the probe assembly is sleeved with the flexible sleeve, and at least part of the flexible sleeve extends in the circumferential direction of the probe assembly; the rigid connecting piece is fixed to the flexible sleeve and used for being fixed to an installation assembly of the ultrasonic sensor so that the ultrasonic transducer can be installed on the installation assembly. Wherein in the direction perpendicular to the ultrasonic transmitting / receiving surface, the size of the rigid connecting piece is smaller than that of the flexible sleeve / probe assembly; in the radial direction, the size of the rigid connecting piece is larger than the size of at least part of the flexible sleeve / probe assembly. Therefore, the vibration propagation efficiency is reduced through the flexible sleeve and the rigid connecting piece, ultrasonic waves are prevented from being transmitted to the rigid connecting piece, and resonance formed by the ultrasonic transducer and the mounting assembly is avoided.

The present application discloses a surface acoustic wave integrated sensor and a preparation method thereof, belonging to the field of semiconductor technology. The surface acoustic wave integrated sensor includes a plurality of sensing units. Each sensing unit includes a channel layer, a barrier layer, a first electrode and a second electrode, the barrier layer includes a first interdigitated electrode and a second interdigitated electrode, the first interdigitated electrode and the second interdigitated electrode are cross-arranged, the first electrode is electrically connected to the first interdigitated electrode, and the second electrode is electrically connected to the second interdigitated electrode. The surface acoustic wave propagates on the material surface of the first interdigitated electrode and the second interdigitated electrode, and its propagation characteristics (such as speed, phase and amplitude) are affected by changes in the surrounding environment. By calibrating the magnitude of the frequency displacement of the electrical signal on the first electrode and the second electrode, the detection of changes in the external environment is achieved.

The embodiment of the invention provides a remote sensing measurement method and device, electronic equipment and a computer storage medium. The method comprises the following steps: acquiring an output value and a radiometric calibration coefficient of a remote sensing instrument in a current state, and converting the output value into an initial entrance pupil radiation quantity through the radiometric calibration coefficient; obtaining an energy transmission efficiency characterization value of the remote sensing instrument in the current state, and determining a target entrance pupil radiation offset corresponding to the energy transmission efficiency characterization value of the remote sensing instrument in the current state according to a pre-constructed mapping relation between the energy transmission efficiency characterization value and the entrance pupil radiation offset; correcting the initial entrance pupil radiation quantity by adopting the target entrance pupil radiation offset to obtain a theoretical entrance pupil radiation quantity in a current state; the energy transmission efficiency characterization value represents the energy transmission efficiency of the remote sensing instrument; the entrance pupil radiation offset represents the offset of the entrance pupil radiation quantity caused by attenuation of the energy transmission efficiency of the remote sensing instrument. According to the embodiment of the invention, the accuracy of remote sensing measurement is improved.

The invention discloses a cascade cooperative measurement method for electromagnetic ultrasonic thickness measurement modules, which is characterized by comprising the following steps of: (1) forming a cascade measurement system by adopting a plurality of electromagnetic ultrasonic thickness measurement modules, and connecting the modules through cascade interfaces, the electromagnetic ultrasonic thickness measuring modules are sequentially defined as a first channel module, a second channel module,..., and an nth channel module along a cascade sequence; (2) the channel modules are sequentially staggered to enter an ultrasonic transmitting and receiving work cycle; and (3) transmitting trigger pulse signals at intervals by each channel module in a mode of gradually increasing interval time in an ultrasonic transmitting and receiving work period, and performing ultrasonic transmitting and receiving work. According to the cascade cooperative measurement method, cooperative measurement of multiple channel modules can be realized, the overall measurement efficiency can be improved while mutual interference of the channel modules can be avoided, and the cascade cooperative measurement method is adaptive to the multi-measurement-point high-speed scanning requirement of a large component.

The invention relates to a wireless passive three-signal sensor and a preparation method, and belongs to the technical field of sensor manufacturing, the wireless passive three-signal sensor comprises a piezoelectric substrate, the piezoelectric substrate is provided with a hydrogen sensitive film, a temperature sensitive film, a strain sensitive film, an IDT and a reflecting grating, the hydrogen sensitive film, the temperature sensitive film and the strain sensitive film are located on the surface of the piezoelectric substrate at intervals, and the IDT and the reflecting grating pass through the surfaces of the hydrogen sensitive film, the temperature sensitive film and the strain sensitive film and correspondingly adopt different IDT center frequencies and interdigital periods. According to the invention, synchronous monitoring of three parameters of temperature, strain and hydrogen can be realized in a wireless passive mode, and the system can be applied to various scenes requiring multi-parameter monitoring, thereby providing reliable technical support for monitoring in related fields.

An ultrasonic touch sensor includes a touch structure comprising a touch surface configured to receive a touch; an ultrasonic transmitter configured to transmit at least one ultrasonic transmit wave toward the touch structure; an ultrasonic receiver configured to receive ultrasonic reflected waves produced by a plurality of reflections of the at least one ultrasonic transmit wave and generate a measurement signal representative of the ultrasonic reflected waves; and a measurement circuit configurable in a first operation mode corresponding to an air environment and a second operation mode corresponding to a wet environment. The measurement circuit is configured to calculate a rate of change of a plurality of samples of the measurement signal, perform a first comparison based on the rate of change and a rate of change threshold, and operate in the second operation mode based on the rate of change satisfying the rate of change threshold.

The application discloses a manufacturing method of a flexible ultrasonic probe and belongs to the technical field of sensors for agricultural machinery. The flexible ultrasonic probe comprises a lower substrate layer, a lower electrode layer, a lower adhesive layer B, a transducer layer, an upper adhesive layer A, an upper electrode layer and an upper substrate layer which are sequentially stacked. The manufacturing method comprises electrode layer manufacturing and transducer layer manufacturing. The electrode layer adopts a laser cutting plus one-time transfer technology, and compared with the magnetron sputtering plus two-time transfer technology of the prior art, the electrode layer processing speed is faster, and the cost is lower. The transducer layer also adopts a laser cutting technology, and compared with the diamond wire cutting of the prior art, the operation is simple, and the processing precision is high. The flexible ultrasonic probe manufactured by the application can detect the seed arranging state in a seed arranging tube and can also be applied to other material flow detection. Compared with the infrared detection of the prior art, the flexible ultrasonic probe has strong anti-interference ability, high detection precision and low total cost.

According to the ultrahigh-resolution ultrasonic imaging system based on the ultrasonic vortex and the application of the ultrahigh-resolution ultrasonic imaging system, an imaging object is detected by emitting vortex sound fields of different orders, the imaging object, an ultrasonic collecting device and an ultrasonic vortex emitting module are included, and the ultrasonic vortex emitting module comprises an amplitude phase encoding array and an ultrasonic beam modulation structure; vortex distribution is generated through the amplitude phase coding array, the size of a vortex sound field is regulated and controlled through the ultrasonic beam modulation structure, the ultrasonic collection device collects vortex information after passing through an imaging object, and initial vortex distribution which cannot directly reflect the information of the imaging object is obtained. The invention also provides an ultrahigh-resolution ultrasonic imaging method of the ultrasonic vortex, and the method comprises the steps: extracting object information from the initial vortex distribution without object imaging information, and obtaining the initial distribution of an object to be imaged; and further optimizing the initial distribution of the to-be-imaged object through a high-resolution ultrasonic imaging reconstruction algorithm to obtain a super-resolution image of the to-be-imaged object. And the imaging resolution is obviously improved.

A sensor apparatus (1) according to an embodiment of the present invention for achieving the above-mentioned purpose comprises: an oscillator (22) configured to generate and transmit signals for detection; a main board (34) electrically connected to the oscillator (22), and on which is mounted a control chip for interpreting and processing signals transmitted by the oscillator (22); a cover (21) housing the oscillator; a case (31) housing the main board and having an end to which the cover is inserted and coupled; a shield body (351) enclosing at least a portion of the main board, to shield noise introduction; and a waterproof cushion (352) interposed between a rear end of the cover and a front end of the shield body (351).

The present invention relates to a high-frequency sensor suitable for short-range detection, comprising a first shell, a piezoelectric ceramic piece and a first matching layer. The piezoelectric ceramic piece is arranged in the first shell, and the piezoelectric ceramic piece is connected to one end face of the first matching layer. The first matching layer is embedded in the first shell, and the other end of the first matching layer protrudes out of the first end of the first shell. In the above-mentioned high-frequency sensor suitable for short-range detection, after the first matching layer is embedded in the first shell, on the one hand, the first matching layer is embedded and fixed in the first shell, and the entire high-frequency sensor suitable for short-range detection has a relatively stable structure; on the other hand, since the end of the first matching layer protrudes out of the first end of the first shell, the binding force of the first shell on the surrounding areas of the first matching layer can be reduced, which can greatly reduce the phenomenon of insufficient echo signals. That is, it can be suitable for short-range detection and has a good echo signal.

An electronic device is provided. The electronic device includes multiple transducer pixels. Each of the transducer pixels includes a sonic transducer, a demultiplexer electrically connected to the sonic transducer, a driving line electrically connected to the sonic transducer, a switching line electrically connected to the demultiplexer, and a reading line electrically connected to the demultiplexer. The driving line is used to provide a driving signal to the sonic transducer to emit sonic waves. The switching line is used to turn on the demultiplexer to output the sensing signal received by the sonic transducer to the reading line.

The present invention discloses a sensor system and method. The sensor system includes one or more rotor antennas on an axis moving in a stator bracket, the one or more rotor antennas are one or more of the conditions around the axis of the sensor system or along the axis of the sensor system, and the one or more rotor antennas are configured to communicate sensing data with the one or more stator antennas on the stator bracket. Each rotor antenna has a rotor signal trace disposed on an outer rotor side of a dielectric substrate of the rotor antenna and a rotor return trace disposed on the outer rotor side of the dielectric substrate, wherein the rotor signal trace and the rotor return trace are not concentric with respect to each other.

The invention relates to a method and a system for measuring physical parameters such as the speed and / or distance travelled by a bicycle during use by a user. The system comprises a permanent magnet (2) arranged on a front fork and a measuring circuit (3) comprising a magnetic sensor (31), the circuit being arranged on the rim of the wheel at the same distance from the axis of rotation of the wheel as the permanent magnet. In use, the magnetic sensor passes in front of the permanent magnet so as to generate an induced voltage pulse each time it passes in front of the permanent magnet. The induced voltage is rectified and stored in a capacitor (C L ) to power the measuring circuit. The calculation of speed and / or travel distance is performed in a calculation unit (34) clocked by a clock quartz oscillator (33) by knowing the diameter value of the wheel of the bicycle and based on the induced voltage pulses received over time. The measurements performed by the measuring circuit are sent to a portable device (4) carried by the user or mounted on the bicycle for display. The speed measurement value and / or the travel distance obtained by integration in the calculation unit (34) of the measuring circuit (3) are stored in a non-volatile memory (37) of the measuring circuit (3).

The utility model relates to a reinforced acoustic detection tube, comprising a first tube and a second tube, wherein an insert is fixed in the first tube, a socket is fixed in the second tube, the insert is plugged into the socket, an abutment plate is fixed on the outer side of the first tube, a connecting sleeve is sleeved on the second tube, the connecting sleeve abuts against the lower surface of the abutment plate, a screw is symmetrically fixed on the outer side of the second tube, a slide groove is provided on the outer side of the connecting sleeve corresponding to the screw, the screw is slidably connected in the slide groove, and a nut is threadedly connected on the outer side of the screw. The reinforced acoustic detection tube strengthens the connection stability of the first tube and the second tube through the design of components such as the connecting sleeve, the abutment plate, and the screw, so that good structural stability can be maintained during use, and the overall reliability is improved. Through matching components such as the insert, the socket, the positioning block, and the positioning groove, the protective performance of the first tube and the second tube is improved after splicing.

Present disclosure discloses a device (100) for indicating orientation of an object (101). The device (100) includes a housing (1) configured to contain a fluid (2), which may be homogenously distributed along and / or across an internal volume of the housing (1). Further, the device (100) includes a source (3) configured to generate an electron beam to travel along and / or across a portion of the fluid (2) in the housing (1). The device (100) includes a control unit (5) coupled to the receiver (4) and one or more networking devices, to determine deflection of the electron beam from a normal condition to a deflected condition under presence of a magnetic field, and to hence determine displacement of the object (101) about the pitch / roll / yaw axes based on the deflected condition. With such configuration, the device (100) aids to reduce or eliminate complex techniques for determining orientation of object (101) at low cost.

The present invention provides an ultrasonic flight sensor and a manufacturing method thereof, including a cavity disposed in a semiconductor substrate, an excitation layer disposed above the cavity and having a patterned design, and an elastic film covering the cavity and wrapping the patterned excitation layer. Among them, the excitation layer includes a first electrode layer, a second electrode layer, and a piezoelectric layer disposed between the first electrode layer and the second electrode layer. The present invention realizes the miniaturization of the ultrasonic flight sensor, so that the produced ultrasonic flight sensor can achieve the expected performance. Further, the present invention opens holes in the edge region of the elastic film corresponding to the cavity, which is beneficial to reducing the influence of the elastic film stress on the frequency of the ultrasonic flight sensor.

A method comprising transmitting, by an electric conductor disposed in a wellbore, a time-varying electric signal to a first reflector wirelessly coupled to the electric conductor and a sensor, wherein the sensor is wirelessly coupled to the electric conductor via the first reflector, receiving a first reflected signal from the first reflector, analyzing the first reflected signal to determine a sensor value for the sensor, and determining, based on the sensor value, one or more downhole parameters.

A sensor apparatus according to an embodiment of the present invention for achieving the above-mentioned purpose comprises: an oscillator configured to generate and transmit signals for detection; a main board electrically connected to the oscillator, and on which is mounted a control chip for interpreting and processing signals transmitted by the oscillator; a cover housing the oscillator; a case housing the main board and having an end to which the cover is inserted and coupled; a shield body enclosing at least a portion of the main board, to shield noise introduction; and a waterproof cushion interposed between a rear end of the cover and a front end of the shield body.

An apparatus comprising an array of polymer-based capacitive micromachined ultrasonic transducers positioned on a substrate. The substrate may be at least substantially transparent to ionizing radiation, be flexible, and / or have walls positioned thereon to protect the transducers.

Systems and methods for Wi-Fi sensing are provided. A method for Wi-Fi sensing carried out by a sensing algorithm manager including at least one processor configured to execute instructions. A sensing measurement based on a sensing transmission transmitted by a sensing transmitter and received by a sensing receiver is obtained. Then, a device context of a sensing pair associated with the sensing transmission is determined. The sensing pair includes the sensing transmitter and the sensing receiver. The sensing measurement is associated with the device context. A sensing algorithm is executed according to the sensing measurement and the device context to generate a sensing result.

The invention relates to the technical field of fiber bragg grating sensors, and discloses an energy-gathered fiber bragg grating acoustic emission sensor, which is characterized in that an acoustic black hole structure is centrally mounted in a cylindrical cavity in an outer shell by adopting a positioning and fixing assembly; the shell top cover is fixed at the top of the shell body; the shell top cover is used for pressing and fixing the pressing sheets into the corresponding pressing plate grooves; the fiber bragg grating penetrates through the through hole in the shell wall of the outer shell and is located in the first semi-circular groove and the second semi-circular groove, and the second semi-circular groove is located in the middle of the fiber bragg grating in the length direction. A fiber bragg grating sensor structure based on transverse force is adopted, a signal loading point is located in the middle of the length of the fiber bragg grating, and the sensitivity of acoustic emission signal detection is improved. The acoustic black hole structure is adopted, acoustic emission signal energy is gathered at the top end of the acoustic black hole structure, maximum deformation is generated, the signal receiving strength of the fiber bragg grating is improved, the acoustic emission signal amplitude is enhanced, and then the detection sensitivity and accuracy are improved.