48results about How to "No mechanical movement" patented technology

The invention relates to a type fuel metering device, in particular to a capacitance sensing type fuel meter. The meter comprises a comparison capacitance sensor group, a capacitance measuring transducer circuit board and a signal processing, calculating and displaying instrument circuit board, wherein the comparison capacitance sensor group is inserted in an oil tank, the capacitance of the sensor group changes with the dielectric constant of a medium between polar plates so that the oil quantity in the oil tank can be obtained by measuring the capacitance value of the measured capacitor. Compared with the existing fuel needle indicator, the meter of the invention has the following beneficial effects: the meter has high precision, sensitivity and reliability, the oil quantity and fuelingcharge of the vehicle-mounted oil tank can be accurately measured, the fueling charge and the fuel quality can be monitored simultaneously; and no mechanical movement is generated and the shock resistant performance is good.

The invention provides a liquid crystal photon crystal fiber tunable narrowband filter and a manufacturing method thereof. The method comprises the following steps of: directly plating a multilayer dielectric film on a photon crystal fiber end face to form a one-dimensional photon crystal, performing photosensitive self-assembly film treatment on the dielectric film, and then performing polarization treatment under ultraviolet light; and butting two photon crystal fibers treated likewise on the dielectric film sides, injecting liquid crystal at the butted position, and putting the liquid crystal into a variable magnetic field to realize wavelength tuning function. The invention overcomes the defects of difficult coupling of the filter and an optical communication system, complex structure and mechanical motion, and meanwhile solves the problem of difficult liquid crystal control in a microscopic system. The tunable narrowband filter is easy to couple and easy to match with an all optical network, and has the advantages of simple structure, large tuning range, low cost and the like.

The invention discloses a liquid crystal aberration correcting method without wavefront detection. A used system comprises a liquid crystal aberration corrector, an image acquisition module, a convolutional neural network module and a grayscale conversion module. The specific method is as follows: the liquid crystal aberration corrector is used as an executing mechanism to correct distorted wavefront of received light; the image acquisition module is responsible for receiving light beams after liquid crystal correction, and acquiring the light beams as light spot images; after large-amount light spot data training, the convolutional neural network module is used for carrying out fitting according to the light spot images acquired by an imaging system to obtain Zernike coefficients corresponding to light spots; and finally, the grayscale conversion module is used for converting the Zernike coefficients obtained by fitting into grayscale values and controlling the liquid crystal aberration corrector to correct an aberration.

The invention discloses a semiconductor temperature difference generation device. The semiconductor temperature difference generation device is characterized by being installed between a three-way catalytic oxygenizer and a first-stage silencer of an automobile exhaust pipe. The semiconductor temperature difference generation device comprises outer heat radiation fins, a semiconductor generation chip with a plurality of semiconductor thermoelectric module devices arranged in parallel and an amplification and voltage stabilization circuit, the amplification and voltage stabilization circuit is connected with a voltage output end of the semiconductor generation chip, and the semiconductor generation chip is covered with the outer heat radiation fins. The semiconductor temperature difference generation device is installed between the three-way catalytic oxygenizer and the first-stage silencer of the automobile exhaust pipe, guarantees the use condition of the temperature of 200-450 DEG C, and guarantees high-efficient conversion of technical indexes.

The invention relates to the technical field of bicycle power generation, in particular to a bicycle power-generating hub based on a piezoelectric material. The bicycle power-generating hub is characterized by comprising a bicycle hub structure, a piezoelectric material group piece module, an energy recovery and conversion circuit and an electric energy transmission slide ring. The bicycle weightis transmitted to wheels through the hub, acts on the road surface and forms balance with a counter-acting force. When the bicycle is ridden, the wheels rotate. The piezoelectric material group piecemodule is circularly stressed and then releases the stress, a piezoelectric material group piece produces voltage charge which is constantly transmitted to the energy recovery and conversion circuit and converted into electric energy which can be continuously used or stored, and the electric energy is transmitted to an electronic device or an electric energy storage unit for the bicycle through the electric energy transmission slide ring. Mechanical energy, heat energy and the like making the hub stressed and deform in the bicycle riding process are collected and converted into electric energy, the electric energy is provided for the bicycle and can be used by the electronic device or stored by a battery unit, and the riding kinetic energy consumption of the bicycle is not increased.

The invention discloses a thermoelectric generation device using steel ladle surface waste heat. The device comprises a protective cover, a skeleton, an upper heat insulating plate, a thermoelectric system, a lower heat insulating plate and a cooling system. The skeleton is a semi-cylindrical support; the protective cover is welded on the skeleton; the upper heat insulating plate, the thermoelectric system and the lower heat insulating plate are fixed on the skeleton by bolts to form a semi-cylindrical shape; the cooling system is arranged outside the thermoelectric system; and the device is composed of two semicircular cylinders. The technical scheme of the invention has the characteristics of simple structure, small size, no mechanical movement and no noise, so that the waste heat recovery and utilization in the limited space can be realized.

The invention relates to a cone beam CT instant scanning device and a reconstruction method. The reconstruction method includes steps of S1, placing an objective table in a scanning device, placing ascanned object on the objective table, and starting a scanning device; S2, starting all high-speed flat panel detectors, and scanning the object by an X-ray focal point in the scanning device, and immediately closing the X-ray focal point after collecting the projection data of the object; S3, traversing all X-ray focal points according to an appointed order and acquiring projection data of the object under the scanning device at the current moment; S4, repeating steps S2 and S3, acquiring the projection data of the scanned object under the scanning device at the next moment, and closing the cone beam CT instant scanning device; S5, rebuilding the object at every moment by a con beam CT reconstruction algorithm based on LO regularization, and acquiring a three-dimensional voxel and a faultage image of the scanned object at every moment and displaying them. The device can scan the object very quickly and is free from any mechanical movement during the scanning process; the time resolution is high.

The invention provides a loudspeaker of a micro-electro-mechanical system, which comprises a baseplate, a plurality of spacing bodies, a plurality of heating units and a signal input device, wherein the baseplate is provided with a plurality of acoustic holes by penetration; the plurality of the spacing bodies are arranged on the surface of the baseplate, each spacing body forms a gas medium gap, and each gas medium gap is communicated with the corresponding acoustic hole; the plurality of the heating units are correspondingly arranged on the spacing bodies; and the signal input device is used for transferring current signals to the plurality of the heating units, electrifying the plurality of the heating units for heating, and further heating gas media to emit acoustic waves. The invention further provides an electronic device with the loudspeaker of the micro-electro-mechanical system.

The invention relates to the technical field of new energy vehicles, specifically to an automatic power generating hub based on piezoelectric materials. The automatic power generating hub based on thepiezoelectric materials comprises a vehicle hub (including a flange plate mounting hole), a piezoelectric material module, an energy recycling and converting circuit and an electric energy transmission slip ring. The vehicle weight is transmitted to wheels through the hub to act upon the road surface so as to achieve a balance with counter-acting force. During the running of a vehicle, the wheelsrotate, pressure is applied to the piezoelectric material module and then released from the piezoelectric material module in circulation; the piezoelectric material module generates voltage-charge and contiguously transmits the voltage-charge to the energy recycling and converting circuit to be converted into electric energy for continuous use or storing; and the electric energy for continuous use or storing is transmitted to a vehicle power device or an electric energy storage unit through the electric energy transmission slip ring. The automatic power generating hub based on the piezoelectric materials has the advantages that mechanical energy, thermal energy and so on of deformation generated by the hub under a stress in the vehicle running process are collected and converted into theelectric energy to provide power supplement to the new energy vehicle; vehicle running kinetic energy consumption is not increased; the cruising power of an electrical driving vehicle can be obviouslyenhanced and can be even enhanced by more than 20%.

The invention provides an integrated installation type rim lubricating device with an air source system. The integrated installation type rim lubricating device comprises an electronic control system(1), an air source system (2), a pneumatic actuator (3), a grease tank (4) and a base plate (5). According to the integrated installation type rim lubricating device, the integrated installation design is adopted, all components except for a spraying nozzle and a rubber hose are arranged together to form an integrated unit to be installed into a driver room of a rail traffic vehicle. The form of the integrated unit facilitates device installation and maintenance, connectors are simple, the occupied space is small, the structure is compact, too many pipes for transmitting compression air is notneeded, and the pressure loss is small. A pull rod type air capacitor is used for storing the compression air, welding seams are avoided, all related parts can be directly installed at the preservedconnector of the air capacitor, and the structure is simple. The spraying nozzle installed on a bogie is simple in structure, mechanical motion does not exist insides, electric elements are not provided, the working is reliable under the working condition of impact vibration, and the efficiency cannot be lost.

The invention discloses a multi-channel parallel signal modulation device, and mainly relates to the technical field of laser application. The device comprises a laser light source, an optical fiber coupler, an optical fiber collimator and an acousto-optic modulation system. The acousto-optic modulation system comprises an acousto-optic modulator and a radio frequency driver. A laser source signalis equally divided into N paths of optical signals after passing through the optical fiber coupler, optical path shaping and collimation are carried out through collimators on all channels, finally,the optical path shaping and collimation are controlled by an acoustic optical modulator, and N paths of parallel modulation signal output can be obtained. Each acousto-optic modulator is driven and controlled by respective radio frequency, the channels are mutually independent and free of crosstalk, the number of the modulated channels can be determined according to user requirements, only one laser source is adopted, the structure is simple, no crosstalk exists, and the modulation speed is high.

The invention discloses an electro-optical nutation coupling system and method for space laser communication, and belongs to the field of laser communication. The system comprises a quarter-wave plate, a fast reflector, an electro-optical deflector, a coupling lens, a single-mode optical fiber, an optical switch, an incoherent receiving module, a coherent receiving module, a communication and angle error resolving module, an electro-optical deflector driving module and a fast reflector driving module. According to the invention, based on an electro-optic deflection effect, a non-mechanical electro-optical deflection device is adopted; two-dimensional scanning and nutation coupling of a laser beam are realized by controlling the electro-optical deflector; while communication information isdemodulated, extraction of tracking angle error amount of a laser signal and calculation of compensation amount are completed, and the electro-optical deflector and the rapid reflector are controlledto perform fine tracking compensation, so that high-precision tracking of the laser signal and stable and efficient coupling from spatial light to a single-mode optical fiber are realized. The methodcan be compatible with tracking angle error calculation and compensation under incoherent and coherent communication systems.

The invention relates to a resolution multiplication DMD projection system based on a birefringence principle. The system comprises a laser, a laser beam expanding and collimating light path, a DMD module, an upper computer module, a TN liquid crystal module, a synchronous control circuit, a birefringence optical assembly, a projection light path and a projection screen. The laser emits laser to serve as an illumination light source of the projection system, the DMD projection light path projects a reflected laser picture into a subsequent system, an image decomposed by a computer image algorithm is loaded on the DMD through the upper computer control system, and the projected image is staggered and superposed after passing through the liquid crystal control module and the birefringence optical assembly. The system aims to realize projection display with resolution multiplication and improved image quality on the basis of not changing the physical resolution of hardware projection equipment.