17results about "Converting sensor ouput using wave/particle radiation" patented technology

This invention belongs to the field of ultrasonic transducer technology and discloses a transceiver integrated fiber optic all-optical ultrasonic probe and its fabrication method. The probe includes an optical fiber (1), a capillary tube (2), a plano-concave diaphragm (4), and a photoacoustic conversion layer (5). One end of the plano-concave diaphragm is concave, and the other end is planar, forming a closed FP cavity (3) with the optical fiber and capillary tube. The photoacoustic conversion layer can absorb the laser beam energy of the excitation light and convert it into ultrasonic waves, which are then emitted outwards to realize ultrasonic wave transmission. At the same time, the photoacoustic conversion layer can receive ultrasonic wave echoes and deform the plano-concave diaphragm according to the strength of the ultrasonic wave echoes, causing the cavity length of the FP cavity to change, thereby realizing the function of receiving and detecting sound waves. This invention utilizes a capillary tube and forms a plano-concave diaphragm at the end of the capillary tube, which on the one hand facilitates the miniaturization of the probe, and on the other hand significantly improves the reflection contrast of the FP cavity, thereby enhancing the detection performance.

A hybrid displacement sensor (100) includes a waveguide (106), a target magnet (110) and a pickup (108). The waveguide includes a longitudinal axis (111), an input end (138) and a return end (134). The target magnet is configured to move along the longitudinal axis relative to the waveguide. The pickup includes a magnetostrictive sensing element (120A) located adjacent to the input end, and a plurality of Hall-effect sensing elements (120B) distributed along the longitudinal axis.

The application belongs to the technical field of electrical sensors, and particularly relates to a preparation method of a surface acoustic wave sensor for improving the binding force of a gate electrode, comprising the following steps: cleaning a lithium niobate substrate, drying the lithium niobate substrate to obtain a pretreated lithium niobate substrate; spin-coating 3510T photoresist on the pretreated lithium niobate substrate, and then performing a pre-baking treatment at 100-120 DEG C; performing photoetching on the photoresist of the substrate after the pre-baking treatment, and then performing exposure and development treatment; performing post-baking treatment on the substrate after the development treatment at 120-140 DEG C; spin-coating photoresist on one side of the substrate after the post-baking treatment, and magnetron sputtering a platinum-gold layer; slowly heating the substrate after the magnetron sputtering treatment to 450-500 DEG C to perform heat treatment; removing the photoresist in the substrate after the heat treatment to form a platinum-gold gate electrode, and obtaining the surface acoustic wave sensor. The application reduces the cost and improves the stability of electrode material adhesion, and has a wide application prospect.

The application is suitable for the technical field of electric mosquito-repellent incense detection, and particularly relates to an electric mosquito-repellent incense detection device and a detection method. The method comprises a rack, a power component, an annular bearing component, a feeding assembly, a discharging assembly, an ultrasonic detection assembly, a voltage resistance detection assembly and a resistance value testing assembly. The resistance value testing assembly is arranged on the rack and located between the discharging assembly and the ultrasonic detection assembly. A control component is arranged on the rack and in communication connection with the resistance value testing assembly. The resistance value testing assembly comprises a base, an extension component, a testing component and an auxiliary detection component. The base is arranged on the rack. One end of the extension component is arranged on the base and perpendicular to the base. The testing component is arranged at the other end of the extension component and faces the annular bearing component. The auxiliary detection component is arranged on the base perpendicularly and parallel to the testing component. The electric mosquito-repellent incense detection device provided by the application can solve the problems of misalignment and inability to determine whether the test position covers each test point due to positioning cumulative error.

The utility model relates to ultrasonic sensor technical field discloses a kind of high-pressure-resistant ultrasonic sensor structure, coaxially arranged briquetting, wire passing device, main structure and sensor shell are sequentially included;The main structure is columnar, and first cavity is arranged in, first cavity upper part is wider, and the peripheral dimension of wider place corresponds briquetting and wire passing device;The inner wall upper part of main structure is arranged with the first internal thread matched with the upper external thread of briquetting;The outer wall of main structure is sequentially formed from top to bottom six prism section, first external thread, first annular groove section and second external thread;First annular groove section outer wall forms the first annular groove that has first O ring;The wire passing device is inlaid at least two copper columns;Second cavity is arranged in the sensor shell, and sensor sealing layer is arranged in the bottom of second cavity, piezoelectric ceramic sheet is arranged in the inboard of sensor sealing layer, second internal thread is arranged in the inner wall upper part of sensor shell.

This utility model relates to the field of pipeline cleaning technology, specifically disclosing an acoustically coded pipeline cleaning pig, including a cylindrical body with a horn fixedly installed inside, mounted on the output end of a solenoid valve. This utility model utilizes airflow driven by air pressure to enter through the opened solenoid valve and drive the horn to emit a preset audio signal. This audio signal facilitates precise positioning by external acoustic equipment and allows for direct location identification by human ear, significantly improving operational safety. Simultaneously, after the pig enters the station, the airflow channel continuously and rapidly releases residual pressure at the tail end, effectively preventing equipment or personnel injury caused by the instantaneous release of high-pressure gas. It integrates positioning, coded positioning, and pressure relief safety into one device.

The application discloses a microwave radiometer indoor calibration method and equipment based on multi-parameter environment simulation, relates to the related technical field of microwave equipment calibration, and comprises the following steps: a controllable atmospheric environment is constructed according to a full electromagnetic wave shielding cylindrical cabin; a microwave signal is transmitted to an environment simulation cabin section through a KV wave band standard signal transmitter in a transmitting end cabin section; a microwave radiometer to be calibrated is pushed into a receiving end cabin section to perform penetration calibration test; an environment-signal coupling response function is established; an analytical correction formula under different environment conditions is used; and an anti-type training correction generation component is arranged in a calibration memory. The application solves the technical problems that in the prior art, a plurality of controllable atmospheric environment parameters cannot be simulated synchronously under laboratory conditions, it is difficult to accurately separate the environment coupling effect and the self response, and the calibration result is deviated from the real running environment, and the technical effects that the measurement precision, the calibration reliability and the environment adaptability of the microwave radiometer under a complex atmospheric environment are improved are achieved.

This invention discloses a piezoelectric MEMS device, its fabrication method, and its applications, belonging to the field of microelectromechanical systems (MEMS) technology. The fabrication method includes: preparing an SOI wafer; performing PSG spin-coating annealing and / or metallization modification on the device layer surface to form a conductive seed layer; depositing a piezoelectric layer; simultaneously etching the insulating layer, modified device layer, and piezoelectric layer using a specific mixed gas or pulse modulation process; forming a metal electrode layer and a bonding metal layer; and bonding and integrating with a TSV structure. This invention replaces traditional metal electrodes with metallization modification, avoiding electrode fatigue and aging, and improving device reliability; the use of single-mask synchronous etching and vapor phase release technology eliminates overlay and bonding errors, reducing process complexity and cost, making it suitable for high-performance sensors, ultrasonic detection, audio, and smart hardware.

The invention relates to a device (1) for measuring a parameter of a motor vehicle, said device comprising a main module (10) and a remote module (20) comprising a sensitive element (230) configured to measure the parameter and a remote piezoelectric transceiver (210) configured to generate an ultrasonic measurement signal and to transmit it to the main module (10), the ultrasonic measurement signal is an image of the measurement signal (S) and is proportional to the value of the measured parameter.

This invention provides a high-coupling-efficiency microstrip antenna and a quantum measurement device based on NV color centers. It belongs to the field of NV color center technology. The microstrip antenna includes: a dielectric substrate, a ground plane disposed on a first surface of the dielectric substrate, a radiating patch disposed on a second surface of the dielectric substrate, a feeding structure, and an NV color center diamond. The radiating patch includes an outer radiating patch and an inner radiating patch nested together. The outer radiating patch surrounds an outer region, and the inner radiating patch is located within the outer region, with a gap between them. The inner radiating patch surrounds an inner region. The NV color center diamond is fixed to the second surface of the dielectric substrate and located within the inner region. One end of the feeding structure is connected to the outer radiating patch. This microstrip antenna achieves precise matching with the resonant frequency of the NV color center, improving electromagnetic field coupling efficiency, reducing signal reflection and transmission loss, and enhancing the stability and sensitivity of the quantum measurement system.

The invention relates to an apparatus, consisting of at least one separation device (12) received in an apparatus housing (10) having a bellows body (14) with individual bellows folds (16), which separates two media chambers (18, 20) from one another within the device housing (10) in a fluid-tight manner, characterized in that that a monitoring device (22) is provided for determining the respective position of the bellows body (14) in the device housing (10), having a displacement transducer (24) which is based on the physical principle of magnetostriction.

This invention provides a radio frequency (RF) sensor and a wireless sensing device, belonging to the field of communication technology. The RF sensor includes an RF carrier generator, a piezoelectric sensor, and a phase modulator. The RF carrier generator generates an RF carrier signal; the piezoelectric sensor converts a physical excitation signal into a sensing voltage signal; the phase modulator has an RF signal input terminal, an RF signal output terminal, and a modulation electrode, which is disposed between the RF signal input terminal and the RF signal output terminal. The RF signal input terminal is connected to the RF carrier generator, and the modulation electrode is connected to the piezoelectric sensor. This RF sensor eliminates the high-power, complex modulation device and uses passive, low-power acoustic devices to complete the signal chain processing, thereby significantly reducing system power consumption, simplifying the system structure, and clearing obstacles for miniaturizing RF sensors.

Device for magnetostrictive position measurement, comprising a tube (2; 2'; 2") made of a silicone material and having a longitudinal axis in which a magnetostrictive waveguide (10) extending in the longitudinal direction of the tube (2; 2', 2'') is generally centered by a guide device (6), wherein the guide device (6) is formed integrally with the tube (2; 2'; 2") and is configured to contact the waveguide (10) at most in a guide zone (12) which comprises less than 20% of the surface of the waveguide (10), characterized in that the guide zone (12) extends along a helix.

This invention discloses a MEMS-based coaxial segmented underwater acoustic towed linear array, belonging to the technical field of underwater acoustic detection equipment. The linear array includes tensile-bearing wires and spaced-apart sensing nodes. Each sensing node includes a carrier and a circuit board. The carrier has a backplate, a U-shaped plate, and a shield. One end of the U-shaped plate is connected to the backplate, the circuit board is inserted into the U-shaped plate, and the shield is positioned above the circuit board. The circuit boards between sensing nodes are connected by cables, with both the tensile-bearing wires and cables passing through the carrier. A watertight protective sleeve is provided outside the tensile-bearing wires, forming an annular cavity filled with a fluid-permeable acoustic medium. The outer diameter of this invention is controlled within 15 mm, significantly reducing resistance and volume. The center uses Kevlar fiber bundles for load-bearing, providing strong tensile strength. Combined with the carrier structural design, internal friction and wear are eliminated, resulting in good pressure resistance.

The present disclosure provides a haptic proximity dual-mode sensor, a signal processing method, an electronic device, a storage medium and a program product, the haptic proximity dual-mode sensor comprising an ultrasonic wave layer and a flexible medium layer arranged in a stack, wherein the flexible medium layer is provided with a relief hole, the relief hole penetrating through the flexible medium layer along the thickness direction of the flexible medium layer; wherein the ultrasonic wave layer comprises a base layer and a first ultrasonic wave transducer and a second ultrasonic wave transducer having different center frequencies, the first ultrasonic wave transducer and the second ultrasonic wave transducer are both arranged on the side surface of the base layer facing the flexible medium layer, the first ultrasonic wave transducer is arranged corresponding to the relief hole to detect the distance between the obstacle in the air and the haptic proximity dual-mode sensor, and the second ultrasonic wave transducer is arranged away from the relief hole to detect the contact force acting on the flexible medium layer by detecting the deformation of the flexible medium layer. The haptic proximity dual-mode sensor realizes the unification of non-contact distance measurement and contact force measurement.