40results about How to "Reduce R&D Risk" patented technology

The invention discloses a two-way reciprocal single longitudinal mode fiber ring cavity laser. The two-way reciprocal single longitudinal mode fiber ring cavity laser comprises a rare-earth-doped fiber (101) which is subjected to torsion processing, a first polarization controller (102), a first polarization converter (103), a narrow-band filter (104), an output coupler (105), a two-way line polarizer (110), a fine filter (112), a wavelength division multiplexer (113), a second polarization converter (114), a second polarization controller (115), a pump laser (111), a first isolator (106), a second isolator (109), a third polarization controller (107) and a fourth polarization controller (108). The two-way reciprocal single longitudinal mode fiber ring cavity laser can effectively eliminate the spatial hole-burning effect, reduce the usage of circularly-polarized light, reduce the systematic research and development risk, and reduce the influence of polarization state disturbance caused by environmental changes on the system stability, thereby improving the performance of the two-way reciprocal single longitudinal mode fiber ring cavity laser.

The invention discloses a satellite mobile communication simulation system. The system is used for transferring calls of a calling user, calling a called user, performing terminal user management, forwarding and temporarily storing short messages and realizing the timed and repeated broadcasting of digital broadcast information, and comprises a network communication management server, a channel management server, a user management server, a short message management server and a digital broadcast management server. The simulation system provided by the invention can highly efficiently and rapidly simulate the whole simulation process, and helps to shorten a research and development cycle and reduce research and development risks.

The invention belongs to the field of image processing, and provides a chip that uses a field programmable gate array (FPGA) to realize real-time decomposition of hyperspectral image mixed pixels. The chip is completed by an ultra-high-speed integrated circuit hardware description language (VHDL). (1) Data input module, (2) Matrix autocorrelation calculation module, (3) Matrix singular value decomposition module, (4) Matrix pseudo-inverse calculation module, (5) Pixel projection decomposition endmember module consists of five parts. The present invention adopts the design idea of ​​SYSTEM ON CHIP, various control signals are generated inside the FPGA, so that the response speed of the whole chip is fast; it can complete the real-time processing of hyperspectral image data, and can be used for semiconductor processing, with short development cycle, low design cost, and easy research and development. low risk.

The invention provides an earphone plug-and-plug detection circuit, an earphone detection device, and an audio device. Through the earphone detection circuit unit mainly composed of a bias voltage module and a low-pass filter module, the design of related products does not limit the earphone socket and the earphone detection chip. The purpose of the type selection is that the R&D personnel do not need to consider whether the headphone detection chip supports negative voltage and whether the headphone jack is compatible with normal level and high level audio output when designing related products, so as to have more choices and more flexible design and lower costs.

The invention provides a high-spectrum image dimensionality reduction chip, which belongs to the field of image processing. The chip mainly completes the real-time dimensionality reduction processing on a large amount of high-spectrum image data. The chip is completed by adopting the VHDL speech, and is realized through being based on an in-site programmable gate array. The system chip manly comprises five parts: a system control module, a self correlation module, a feature value solving module, a feature value extracting module and a dimensionality reduction realization module. The inventioncan complete the real-time dimensionality reduction processing of the high-spectrum image data, and has the advantages of short development period, low design cost and low development risk.

The invention belongs to the technical field of drug analysis, and discloses a method for measuring the in vitro dissolution of felodipine sustained-release tablets. The felodipine sustained-release tablets are dissolved using a two-chamber model experimental device, and the dissolution medium is 0.3% sodium lauryl sulfate. pH 6.8 phosphate buffer solution, felodipine slow-release tablets are placed in the rotating basket, the rotating speed of the rotating basket is 100 rpm, the stripping solution is continuously extracted after the stripping solution is filtered through the filter membrane, and the extraction speed of the stripping solution is the same as that of the dissolution medium. The replenishment rate was 5-12 mL / min to measure the concentration of felodipine in the dissolution liquid until the dissolution of the felodipine sustained-release tablet was completed; the average dissolution concentration of felodipine in the dissolution liquid at different time points was measured by high performance liquid chromatography . The in vitro dissolution method of the present invention ensures the accuracy of the in vitro dissolution test by simulating the in vivo absorption process, realizes that the dissolution curve determined by the in vitro dissolution test is consistent with the in vivo absorption process, and provides guarantee for realizing good prediction of human bioequivalence.

The invention relates to a method for determining energy of a power battery of an electric automobile under circulating working conditions. The method comprises the following steps of breaking down each circulating working condition of the pure electric automobile into a uniform speed working condition, an acceleration working condition and a brake working condition; respectively determining the energy requirements under each of the uniform speed working condition and acceleration working condition; determining the driving energy consumption of the whole automobile under the uniform speed working condition and acceleration working condition, so as to obtain the energy requirement of a power battery pack. The method has the advantages that in the early design period of the pure electric automobile, the energy of the power battery is calculated according to the endurance mileage requirement under the circulating working condition, the endurance mileage requirement of the whole automobile is guaranteed, the research and development risk of a project is decreased, and the defect of low calculation accuracy of energy of power battery according to endurance mileage requirement under the uniform speed working condition is overcome.

A multifunctional display platform of a direct-drive A / C-axis double-angle numerical control universal milling head comprises a pedestal, a stand column and a head body, wherein the pedestal is welded; the stand column is a hollow pipe, and the lower end of the stand column is connected with the pedestal through a bolt while the upper end thereof is abutted with the head body through axle hole clearance fit; a wire groove communicated with the inner hole of the stand column is arranged on the pedestal corresponding to the mounting position of the stand column; a rectangular groove is arrangedat the side of the pedestal; and the head body is a hollow welded cubic structure or a regular trigone column assembled by a welding bracket, a protection piece and a connection piece. The multifunctional display platform of the direct-drive A / C-axis double-angle numerical control universal milling head has the following advantages of: (1) replacing the machine tool, independently displaying the functions of the functional components, and saving the cost; (2) being convenient for assembly and transportation because the stand column and the pedestal are fixed through a bolt, and the stand column and the head body are combined through a joint and reducing the time and cost; (3) shortening the development period and reducing the development risk; and (4) occupying small area, wherein three or four multifunctional display platforms of the direct-drive A / C-axis double-angle numerical control universal milling head can be arranged in the area occupied by one machine tool.