49results about How to "Lower difficulty requirement" patented technology

The invention relates to a driving device for a pulse laser. The driving device comprises a drive and power supply module and a laser module; the drive and power supply module comprises a power supply source unit and a pulse generating unit; the power supply source unit is used for supply power to the laser module and the pulse generating unit; the pulse generating unit is used for generating electrical pulses according to a required pulse parameter; the laser module comprises a pulse level conversion unit, a pulse current switch and the pulse laser; the pulse level conversion unit is used for stepping up the electrical pulses generated by the pulse generating unit to a required electrical level so as to meet the driving requirements of the pulse current switch; the pulse current switch is used for driving the pulse laser; the power supply source unit is respectively connected with the pulse level conversion unit and the pulse laser through power supply leads; and the pulse generatingunit is connected with the pulse level conversion unit through a coaxial cable. According to the driving device for the pulse laser, the short driving distance of the pulse laser can be prolonged, and the driving quality can be improved.

The invention provides a full automatic gas recovering and charging device which comprises a first pipeline, a first oil separator, a compressor, a second oil separator, a work tank and a second pipeline. One end of the first pipeline is communicated with a low-voltage charging end of a car air conditioning system. The first oil separator is respectively communicated with the first pipeline and the compressor. The work tank is respectively communicated with the compressor and the second pipeline. The second pipeline is communicated with a high-voltage charging end of the car air conditioning system. The position of the first pipeline is provided with a first magnetic valve which controls the on and off of the first pipeline. The second pipeline is provided with a second magnetic valve which controls the on and off of the second pipeline. The full automatic gas recovering and charging device further comprises a first pressure sensor and a controller. When the full automatic gas recovering and charging device is connected with the car air conditioning system, the first pressure sensor is connected with the car air conditioning system to detect the pressure inside the car air conditioning system, and the controller is electrically connected with the first pressure sensor, the first magnetic valve, the compressor and the second magnetic valve.

The invention provides an annular optical fiber with an asymmetrical optical grating and application in orbital angular momentum generation thereof. A hollow core annular optical fiber can increase the effective refractive index between degeneracy-similar modes, thereby preventing crosstalk between the modes. A long period optical grating inscribed on the upper half ring of the hollow core annular optical fiber breaks a circular symmetry structure of the optical fiber and achieves conversion between angular non-same order modes. When input light is of a circular polarization fundamental mode, a first-order orbital angular momentum mode can be generated. The hollow core of the hollow core annular optical fiber is filled with an optical functional material with the refractive index adjustable and the wave length for generating the orbital angular momentum mode can be tuned by the refractive index of the liquid, so that the structure can generate the orbital angular momentum mode in an adjustable cross band wave length range. Simulation shows that when the optical grating period is 292 [mu]m and the optical grating length is 1.460cm, the range of broad band wave lengths with the angular momentum mode conversion rate higher than 90% can reach 237nm, the greatest conversion rate is 98.91%, and the modulation rate of the refractive index of the filling liquid for the wave lengths for orbital angular momentum mode generation is 400nm/RIU.

The invention relates to a temperature prediction method for a photovoltaic assembly. The method comprises: step one, data initialization is carried out and an input vector and a target vector are determined; step two, an assembly temperature prediction model based on a BP artificial neural network is constructed; step three, error counter-propagation algorithm training is executed to obtain outputting of all nodes of a hidden layer and an output layer; step four, a connection weight value is adjusted and all node outputs of the hidden layer and the output layer after adjustment are obtained; and step five, if a convergence condition is met, training is completed; and otherwise, the step three is executed again. On the basis of predication of a photovoltaic assembly temperature, the accuracy of photovoltaic power generation prediction is improved.

The invention relates to a high-resolution reflection type high-speed rotating mirror interference spectrometer which comprises a first rotating mirror and a second rotating mirror, wherein the second rotating mirror is a plane mirror. The invention provides the high-resolution reflection type high-speed rotating mirror interference spectrometer which can improve the spectral resolution of a system, can simplify the structure of the system and has large view field angle.

The invention discloses a multichannel parallel optical receiving module, and the optical receiving module comprises a housing, a substrate, an MT connector, a ceramic terminal, and a flexible circuit board. The substrate is disposed in the housing. The substrate is provided with an optical fiber collimation array, a focusing lens and an L-shaped gasket, wherein the optical fiber collimation array, the focusing lens and the L-shaped gasket are set sequentially. A side surface of the L-shaped gasket is provided with a photoelectric detector PD, and a receiving drive chip is disposed above the L-shaped gasket. The photoelectric detector PD and the receiving drive chip are connected through bonding. The optical fiber collimation array, the focusing lens and the photoelectric detector PD achieve the optical path coupling. According to the invention, the module employs a fewer optical devices, can greatly reduce the coupling difficulty of the optical path, reduces the technological difficulty and requirements during the production of the module, is easier to assemble, improves the production efficiency of the module, facilitates the batch product, and can achieve the airtightness.

The invention discloses a space planning-based parking space occupation state monitoring method. The method comprises the steps of (1), shooting a target area to obtain a real scene image and a parking space distribution image when no parking exists; (2), based on the real scene image and the parking space distribution image in the step (1), calculating out the suggested number, heights and positions of parking space state monitoring cameras; (3), merging the real scene image and the distribution image into a real scene-based idle parking space state image; (4), calibrating parking space numbers according to space planning and practical requirements; (5), erecting the cameras at the proper positions and heights capable of covering the target area; (6), based on an initial state image, adjusting a parking space state recognition algorithm by actually measuring vehicles entering and leaving parking spaces; and (7), enabling the occupation states of the parking spaces to be more accurately captured. The method has the advantages that the identification range is wide, the deployment is simple, and the maintenance is convenient.

The invention discloses a manufacturing process for an automobile steering ball. The process includes the following steps of (1) cutting of a raw blank; (2) heating of the raw blank; (3) forging forming of the raw blank; (4) thermal treatment of a steering ball; (5) shot blasting of the steering ball; (6) turning of the steering ball; and (7) packaging of the finished steering ball. The structure is simple, practicability is high, and the heating temperature and machining allowance in the manufacturing process for the automobile steering ball are strictly controlled, so that the machining quality of the steering ball is better, and the precision level is higher; meanwhile, a ball head part and a ball rod part are subjected to forging forming through different dies, the defective rate is effectively lowered, and the cost is reduced; and the manufacturing process is simple, meets practical production requirements and increases the comprehensive utilization rate.

The invention discloses a submarine landslide risk analysis method based on unsupervised machine learning, and the method comprises the steps: building a submarine landslide risk evaluation and analysis model based on a determined kernel function parameter type through employing a plurality of groups of geological environment parameters, such as the water depth of a research region and the type ofsediments, as input parameters; carrying out classification processing on input parameters of an actual research region, inputting the input parameters into the constructed unsupervised machine learning model, and obtaining a final submarine landslide risk analysis result through classification and label endowing. According to the scheme, a danger analysis means before the submarine landslide isdangerous is provided, and danger evaluation and prediction can be carried out on the area where the submarine landslide is not generated yet; evaluation can be carried out according to different types of geological parameters, and submarine landslide risk zoning can be rapidly and effectively carried out on a research area according to various geological parameters.

The invention relates to a metal component detection method and device based on a spectrum analysis technology. The metal component detection device comprises a sampling robot, blowing equipment, a pulse laser, spectrum detecting equipment, spectrum analysis equipment and control equipment, wherein the ultrashort pulse output end of the pulse laser is opposite to a sample chamber; the ultrashort pulse output end of the pulse laser is aligned with a spectrum collection lens group in the spectrum detecting equipment; the air outlet of the blowing equipment is aligned with the sample chamber; the sample chamber comprises a tray and a transparent outer cover above the tray; the sampling robot comprises a first mechanical arm and a second mechanical arm. Through the adoption of the method and device, non-contact metal component analysis is realized through laser, automation process is realized through the sampling robot, artificial participation is not required, ultrashort pulse laser is adopted, and the device has good spectral characteristic, and is simple in structure, convenient to apply and suitable for large-scale promotion and application.

The invention discloses a four-mode resonator loaded with high-impedance lines, and relates to the field of microwave passive devices. The resonator is composed of a dual-mode resonator and two symmetrically-distributed high-impedance lines connected with a transmission line, wherein the dual-mode resonator is a folding half-wave resonator, the two arms of a metal patch of the resonator are folded inward, the bottom center of the patch is provided with a via hole, and the two high-impedance lines are attached to the two sides of the dual-mode resonator symmetrically and connected with the transmission line. All the structures are printed on the front of a dielectric substrate, and the back of the substrate is completely covered by metal. The resonator overcomes the following defects: the existing ultra-wideband notch device needs multiple resonators to realize multiple notch stop bands, performances such as frequency selectivity and notch bandwidth need improvement, and the resonance structure can hardly apply to or be transplanted to different UWB systems of other radiation units.

The invention relates to a flexible device transition device and preparation method and a flexible device patch method. The transition device comprises an IC chip and a transition substrate. The IC chip comprises an IC chip substrate, a circuit function layer formed on the IC chip substrate and a packaging layer. The packaging layer packages the IC chip substrate and the circuit function layer from at least the surface of the circuit functional layer and the side surface of the IC chip. A first surface to be patched with the substrate and a second surface corresponding to the first surface areformed on the IC chip. The transition substrate is adhered to the second surface of the IC chip through an adhesive layer. The flexible device transition device can facilitate back patch applicationof the IC chip and is directly applied to the manufacturing of flexible electronic products. The preparation of the packaging layer greatly protects the IC chip, reduces the requirements on storage conditions and avoids damage to the IC chip during transportation.

The invention discloses a novel optically designed fluorescent camera. The novel optically designed fluorescent camera comprises a fluorescent camera and an image processing host, wherein the fluorescent camera comprises a color CMOS photosensitive chip, a black-and-white CMOS photosensitive chip and a beam splitter prism; the beam splitter prism is used for projecting incident light onto the color CMOS photosensitive chip and the black-and-white CMOS photosensitive chip respectively; and the image processing host is used for processing images on the color CMOS photosensitive chip and the black-and-white CMOS photosensitive chip. The invention also discloses a corresponding imaging method. Through adoption of the novel optically designed fluorescent camera, superposition of double CMOS images can be more accurate. The double CMOS images are imaged by the same camera, so that the surgical accuracy is increased in comparison to an existing double-camera fluorescent detector.