16results about How to "High tuning accuracy" patented technology

The invention relates to the technical field of optical fiber lasers, and provides an ultra-wideband tunable optical fiber communication light source based on gas stimulated Raman scattering. Comprising a 1 [mu] m wave band seed source, an electro-optical modulator, a signal generator, an optical fiber amplifier, a solid core-hollow core compact coupling device, an optical fiber end cap, a hollow core optical fiber, a miniature gas cavity, a lens and a dichroic mirror, and the tuning range of the methane gas 1 [mu] m wave band tunable pumping source at least covers 1024-1126 nm. The laser can be converted into communication wave band laser covering the whole S + C + L + U wave band, and benefited from the Raman characteristic of methane molecules, the output laser under single wavelength pumping has a corresponding narrow-linewidth single spectral line, no accompanying ASE noise amplification and the like, and secondary filtering is not needed for selection; and meanwhile, the use of the hollow-core optical fiber ensures that the output laser is only a single mode, and high beam quality can be ensured without other operations.

The invention relates to the technical field of optical fiber lasers, and provides a middle-infrared band large-range accurate tunable optical fiber laser light source which adopts a large-range tunable 1 [mu] m laser pumping source to obtain ultra-wideband middle-infrared laser output larger than 1000 nm. Comprising a 1 [mu] m wave band tunable pulse seed source, an optical fiber amplifier module, an optical fiber end cap, an end cap coupling device, a hollow-core optical fiber and a small gas cavity, and the 1 [mu] m wave band tunable pulse seed source is a nanosecond pulse laser with the tuning range covering 1024-1080 nm. Based on the direct tuning of the pumping source of the 1 [mu] m wave band, the accurate tuning of the wavelength of the laser of 3 [mu] m-4 [mu] m is directly realized, the tuning is convenient, and a seed source does not need to be added. The pumping source at the 1 [mu] m waveband can obtain high-power laser output more easily, the damage threshold of the hollow-core optical fiber is high, and the mid-infrared output power can be effectively improved. The line width of the gas Raman laser is narrower, and the dispersion of the hollow-core optical fiber is small, so that the output mid-infrared laser has the characteristic of narrow line width.

The invention relates to the technical field of optical fiber lasers, and proposes an ultra-wideband tunable optical fiber communication light source based on gas stimulated Raman scattering, comprising a 1μm band seed source, an electro-optic modulator, a signal generator, an optical fiber amplifier, a solid-hollow compact coupling device, an optical fiber end cap, a hollow-core optical fiber, a micro gas cavity, a lens, a dichroic mirror, and a methane gas 1μm band tunable pump source. The tuning range covers at least 1024nm-1126nm. Based on the stimulated Raman scattering effect of methane gas, it can be converted into a communication band laser covering the entire S+C+L+U band. Thanks to the Raman characteristics of methane molecules, the output laser has a corresponding narrow line width single spectral line under single wavelength pumping, without accompanying ASE noise amplification, etc., and does not need to be selected through secondary filtering. At the same time, the use of the hollow-core optical fiber ensures that the output laser is only single-mode, and high beam quality can be guaranteed without other operations.

The present invention relates to the technical field of optical fiber lasers, and proposes a mid-infrared band wide-range precisely tunable optical fiber laser light source, which adopts a widely tunable 1μm laser pump source to obtain an ultra-wideband mid-infrared laser output greater than 1000nm, including a 1μm band tunable pulse seed source, an optical fiber amplifier module, an optical fiber end cap, an end cap coupling device, a hollow-core optical fiber, and a small gas cavity. The 1μm band tunable pulse seed source is a nanosecond pulse laser with a tuning range covering 1024nm-1080nm. Based on the direct tuning of the 1μm band pump source, the wavelength of the 3μm-4μm laser is directly precisely tuned, and the tuning is convenient without adding a seed source. The 1μm band pump source is more likely to obtain high-power laser output, and the hollow-core optical fiber has a high damage threshold, which can effectively improve the mid-infrared output power. The gas Raman laser has a narrow linewidth and the hollow-core optical fiber has a small dispersion, so that the output mid-infrared laser has a narrow linewidth characteristic.

This invention provides a method for measuring the reflection coefficient of an antenna and its user equipment. The method includes the following steps: measuring at least two received signals. Each received signal is measured under a different tuner measurement control word. Multiple tuner scattering parameters and a front-end reflection coefficient at the receiver (Rx) frequency are obtained. These tuner scattering parameters correspond to different tuner measurement control words. The antenna reflection coefficient is calibrated based on the at least two received signals, the tuner scattering parameters, and the front-end reflection coefficient. This innovative method enables closed-loop antenna tuning for all antennas in a mobile device, regardless of their connection to the transmitter (Tx). By utilizing received signals for measurement, this method overcomes the limitations of conventional methods and improves the tuning accuracy and efficiency of mobile antennas.

This invention discloses a tension adjustment and modulation system, device, and method for stringed instruments based on screw drive. The system includes at least one tension adjustment module, each module comprising: a screw drive mechanism that converts rotational motion into linear motion to adjust string tension; a tension sensor positioned in the force transmission path to detect tension values; a drive motor that drives the screw; and a control circuit including a microcontroller and a memory. This invention replaces the traditional rotary winding knob with linear screw drive, eliminating nonlinearity and backlash problems; and replaces audio frequency detection with direct tension measurement. The system supports: one-key recovery—storing the target tension value and adjusting it to the target value in a closed loop after triggering; continuous pitch maintenance—automatically monitoring and fine-tuning to correct drift while powered on; and active tension modulation—actively changing string tension in response to a trigger signal to achieve effects such as pitch bend, string bending, and vibrato. It is applicable to all stringed instruments that rely on string tension to determine pitch.

The present invention proposes a method for generating a red-edge band laser based on barium gallium selenide and potassium titanyl phosphate crystals, and belongs to the field of red-edge band laser technology. The method uses a 1.06μm laser to pump a new nonlinear crystal BGSe. Under type I phase matching conditions, when the cutting angle of the BGSe crystal changes between 50.5°-56.9°, a 1.3-1.6μm near-infrared tunable laser output can be achieved. The output 1.3-1.6μm laser is pumped to a KTP crystal. Under type II phase matching conditions, when the KTP crystal changes between 58.4°-52.4°, a 670-760nm frequency-doubled laser output can be achieved. The method can obtain a higher wavelength tuning resolution, with an average tuning resolution of 14nm / °, and can obtain a red-edge band laser output that is at least better than 0.14nm.

The invention discloses a full-automatic measuring and adjusting integrated tuning device of a multi-cell ellipsoid resonant cavity, and belongs to the technical field of coaxiality measurement and tuning. The device comprises a main body support system, a to-be-measured multi-cell ellipsoid resonant cavity, a coaxiality measuring device, a tuning clamping plate assembly and a control system. The multi-cell ellipsoid resonant cavity to be tested can slide along the slide rail of the main body bracket system; the coaxiality measuring device is provided with a plurality of measuring sensors and is used for monitoring the coaxiality of the multi-cell ellipsoid resonant cavity to be measured in real time; the tuning clamping plate assembly is controlled by a control system, automatic adjustment of a clamping plate and a pulling and pressing plate is achieved through a motor, and real-time tuning is conducted on the to-be-tested multi-cell ellipsoid resonant cavity. The device provided by the invention can realize automatic measurement and tuning integrated operation without manual intervention, and significantly improves the efficiency and precision of coaxiality measurement and tuning.

The present invention discloses a fully automatic integrated tuning device for measuring and tuning a multi-cell ellipsoid resonant cavity, and belongs to the technical field of coaxiality measurement and tuning. The device of the present invention comprises a main support system, a multi-cell ellipsoid resonant cavity to be measured, a coaxiality measuring device, a tuning clamp assembly and a control system; the multi-cell ellipsoid resonant cavity to be measured can slide along the slide rail of the main support system; the coaxiality measuring device is equipped with a number of measuring sensors for real-time monitoring of the coaxiality of the multi-cell ellipsoid resonant cavity to be measured; the tuning clamp assembly is controlled by a control system, and the clamp and the tension and pressure plate are automatically adjusted by a motor to perform real-time tuning of the multi-cell ellipsoid resonant cavity to be measured. The device of the present invention can realize integrated measurement and tuning operations without manual intervention, which significantly improves the efficiency and accuracy of coaxiality measurement and tuning.

According to the ship lift safety mechanism gap adjusting method and the ship lift safety mechanism turning method, firstly, connection between a ship chamber posture driving point speed reducer needing to be adjusted and a synchronizing shaft is required to be disconnected, and after a ship chamber is adjusted to be in a horizontal state, the synchronizing shaft is reinstalled; then, the adjusting direction is determined by measuring the gap value between the upper end and the lower end of the safety mechanism thread pair; then, a driving universal coupling of the safety mechanism is dismantled, and a specially-made turning gear and an upper rotary supporting disc of the safety mechanism are in butt joint and fixed. By manually rotating the device, the up-and-down clearance value of the thread pair of the safety mechanism can be selectively increased or decreased until the preset standard is met. And finally, after the clearance adjustment is confirmed to reach the standard, the driving universal coupling of the safety mechanism is reassembled, so that the ship lift recovers normal operation. The safety and reliability of the ship lift are improved, the maintenance process is simplified, and the operation difficulty is reduced.

The application provides a kind of across hardware tensor program's tuning method, device, equipment, medium and product, it is related to compiler optimization and deep learning technical field, this method includes: obtaining tensor program to be tuned and target hardware information;Tensor program to be tuned and target hardware information are input into across hardware tensor program tuning model, obtain the target tuning program of tensor program to be tuned that across hardware tensor program tuning model output;Wherein, across hardware tensor program tuning model is based on tensor program data sample training and obtains, across hardware tensor program tuning model is the model that the running feature of tensor program to be tuned on target hardware information is structured inference in combination with tensor program to be tuned and target hardware information to tensor program to be tuned.This technical scheme of the application is based on across hardware tensor program tuning model and directly carries out structured inference to the running feature of tensor program to be tuned on target hardware information, obtains target tuning program, improves the accuracy of target tuning program.

The present invention relates to a tunable laser exhaust gas online monitoring device based on the reference compensation principle, comprising a light source part, a reference path part having a Mach-Zehnder interferometer and a photoelectric detector, and a detection part having a photoelectric detector and a digital phase-locked amplifier; the light emitted by the light source part is divided into two paths, which enter the reference path and the detection part respectively; the detection part comprises a photoelectric detector and a phase-locked amplification signal processing unit, the photoelectric detector converts the optical signal passing through the exhaust gas into an electrical signal, and converts it into a digital signal through A / D; the digital signal is processed by the phase-locked amplification signal processing unit to obtain a gas absorption spectrum with a high signal-to-noise ratio. The present invention also provides a monitoring method implemented by using such a device.

The invention discloses a system capable of achieving all-optical wavelength continuous tuning based on an echo wall microcavity laser. The system comprises a microcavity laser achieving device and an adjusting module. The micro-cavity laser implementation device is used for emitting pump light to the echo wall micro-cavity and generating echo wall micro-cavity laser; and the adjusting module is used for continuously and finely adjusting the output wavelength of the pump light so as to realize all-optical wavelength continuous tuning of the echo wall microcavity laser. The all-optical wavelength continuous tuning implementation method provided by the invention is simple to operate, and continuous wavelength tuning is carried out on the output microcavity laser by utilizing a photothermal effect only by changing the wavelength of the pumping laser light source. Compared with other methods based on photo-thermal materials, mechanical tuning and the like, the all-optical tuning technical means provided by the invention has the advantages of simple implementation device, easiness in operation and the like. Besides, based on an all-optical tuning technology of echo wall microcavity laser, on the premise that a dense mode in an echo wall microcavity excites a laser mode, the all-optical tuning laser has the advantages of being low in laser threshold value, small in size, low in manufacturing cost and the like.

The present invention discloses a fully automated measurement and tuning device for a multi-cell ellipsoid resonant cavity, and belongs to the technical field of electric field measurement, coaxiality measurement and tuning. The device of the present invention includes a main support system, a small ball wire pulling device, a coaxiality measuring device, a unit tuning device, a power supply device, a control system and a multi-cell ellipsoid resonant cavity to be measured; the main support system provides support for other structures, and the small ball wire pulling device, the coaxiality measuring device and the unit tuning system are used to realize the high-frequency characteristic measurement, coaxiality measurement and tuning of the multi-cell ellipsoid resonant cavity to be measured; the power supply device is used to provide energy support; the control system provides program control of the entire process of the automated tuning device, including parameter measurement, calculation and tuning. The device of the present invention realizes the testing and tuning of the multi-cell ellipsoid resonant cavity on the same platform, and the entire process is automated without human intervention, which greatly improves the efficiency and accuracy of tuning and ensures the efficient operation of the resonant cavity.

This invention discloses a fully digitally controlled programmable Ti:sapphire femtosecond oscillator carrier envelope offset frequency locking device, comprising an avalanche photodetector, a power divider, a first RF conditioning circuit, a second RF conditioning circuit, a frequency and phase discrimination circuit, a programmable proportional circuit, a programmable integral circuit, a programmable bias circuit, an inverting summation circuit, a programmable limiting circuit, an anti-saturation integral circuit, an output buffer circuit, a main control circuit, and a host computer. This invention enables the carrier envelope offset frequency to be locked to the repetition frequency. Employing a fully digitally controlled programmable PI circuit, combined with innovative anti-saturation integral and output limiting functions, it offers advantages such as low latency, high precision, high stability, and high security.

The utility model discloses a refrigerator with an adjustable hanging net. The refrigerator comprises a refrigerator body, a height adjusting assembly and a carrier. The height adjusting assembly is arranged in the box body and comprises a plurality of vertical rods and a plurality of supporting parts, the supporting parts comprise a plurality of supporting pieces, the vertical rods correspond to the supporting pieces of the supporting parts in a one-to-one mode, the vertical rods are fixedly connected to the inner side wall of the box body, the vertical rods are provided with first through holes, the first through holes are arranged at intervals in the vertical direction, and the supporting pieces are provided with hook parts. The hook part can penetrate through the first through hole so that the supporting piece can be detachably connected to the vertical rod. The carrier frames are arranged in the box body, the carrier frames correspond to the supporting components in a one-to-one mode, and the supporting pieces of the supporting components are jointly matched to support the carrier frames. According to the refrigerator with the adjustable hanging net, the machining process of the first through holes is simple, and the distance between every two adjacent first through holes can be small, so that the height adjusting precision of the carrier is improved, the refrigerator can adapt to various use environments, and the utilization rate of the interior of the refrigerator body is improved.