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697results about How to "Reduce the difficulty of debugging" patented technology

Frequency conversion power source based on digital signal processor controlling

The invention relates to a variable-frequency power source based on the control of a digital signal processor, which comprises a switch power source module, a control circuit, a circuit for isolating and shaping pulse-width modulating signal, IPM inverting circuits, a circuit for detecting and protecting busbar voltage, a rectification input slow-start circuit, a communication circuit, an interface circuit for isolating and inputting parallel signals and an human-computer interface circuit for displaying the key. The invention adopts the structure of a single digital signal processor (DSP) coupled with the double IPM inverting circuits, provides two paths of independent variable-frequency power sources for two sets of asynchronous motors at the same time and carries out independent speed regulations to the two sets of asynchronous motors. The variable-frequency power source of the invention has the advantages of small volume, low power consumption, high reliability and being convenient for bulk production, etc., and adopts an appropriate switch frequency and an advanced voltage space vector pulse width modulation algorithm (SVPWM), thereby lowering the noise during the operation of the asynchronous motors and increasing the voltage utilization rate, with obvious effect on energy saving.
Owner:INST OF AUTOMATION CHINESE ACAD OF SCI

Device and method for adaptively adjusting supporting parameters of image signal processor

The invention provides a device for adaptively adjusting supporting parameters of an image signal processor, which is used for adjusting correction parameters of a lens correction module, an automatic white balance module and a color matrix correction module. The device comprises a storage system and a configuration module, wherein, the storage system is used for storing the correction parameters under different light sources which are obtained through off-line correction of the lens correction module, the automatic white balance module and the color matrix correction module; and the configuration module is used for selecting the corresponding correction parameters from the storage system and providing the correction parameters to the lens correction module, the automatic white balance module and the color matrix correction module for use according to types of the light sources determined by the automatic white balance module. Therefore, the device provided by the invention has the beneficial effects of preventing situations that one faulted of the three modules can cause color errors and is difficult to locate, lowering parameter debugging difficulty of the image signal processor adaptive to multiple light sources, and meanwhile effectively improving image quality while being applied to parameter debugging of the common image signal processor.
Owner:SPREADTRUM COMM (SHANGHAI) CO LTD

Collaborative entity programming method

The invention discloses a collaborative entity programming method, belonging to the field of man-machine interaction. The collaborative entity programming method comprises the following steps of: 1) selecting or establishing a collaborative entity programming display condition; 2) placing an entity programming block sequence according to a collaborative mission requirement by a user; and 3) obtaining the entity programming block sequence currently placed by each user in real time, and sending to a collaborative entity programming treatment module, so as to convert into a corresponding function semanteme sequence; getting out operation instructions in sequence from the current function semanteme sequence; when the instruction is a collaborative operation starting instruction, starting synchronizing communication by the user, and reading and executing an order of a collaborative operation part in the current function semanteme sequence; if the collaborative operation of one user is inaccurate, feeding back prompt information to the user; and otherwise, executing the next instruction and judging whether the collaborative operation is accurate or not until collaborative judgment and synchronous communication are stopped through a collaborative operation stopping instruction. With the adoption of the collaborative entity programming method provided by the invention, a program can be allowed to be compiled by a plurality of children, and the program synchronization can be realized.
Owner:INST OF SOFTWARE - CHINESE ACAD OF SCI

Mould pressing lid maker

The invention discloses a mould pressing lid maker, which comprises a frame and an extrusion mould group, a pressing mould group and a feeding and discharging mechanism that are arranged on the frame; the extrusion mould group has an extrusion port; an upper mould pressing plate and a lower mould pressing plate of the pressing mould group are integrated and are arranged on a first rotating shaft of the pressing mould group; the upper mould pressing plate is provided with upper moulds; the lower mould pressing plate is provided with bottom moulds; the feeding and discharging mechanism is arranged between the extrusion mould group and the pressing mould group and comprises a second rotating shaft and a rotating plate that is arranged on the second rotating shaft, a scraper and a material pushing device are arranged below the rotating plate, and a toggle device is arranged above the rotating plate; and therefore, feeding operation is carried out by utilizing the scraper, and discharging operation is carried out by utilizing the toggle device, thus realizing the feeding and discharging at the same work station. The mould pressing lid maker has compact structure and makes full use of all the upper moulds and the bottom moulds, and the rotating speed of the upper mould pressing plate and the lower mould pressing plate can be set as rapidly as possible, thus enhancing the work efficiency of the mould pressing lid maker and the production capacity.
Owner:GUANGZHOU JEEPINE INTELLIGENT COMPRESSION MOLDING MACHINE CO LTD

Elevator weighing device

The invention relates to an elevator weighing device which comprises a rope hitch plate and a middle supporting plate. A plurality of rubber drums which are distributed side by side are arranged between the rope hitch plate and the middle supporting plate, a plurality of rope hitch springs corresponding to the rubber drums are arranged at the upper end of the middle supporting plate, an eddy current sensor, an overload detector switch, a rope loosening detector switch support and a rope loosening detector switch are arranged on the rope hitch plate, and an eddy current sensor magnetism blocking plate, an overload detector switch touch plate and a rope loosening detector switch touch plate are installed on the middle supporting plate. The elevator weighing device further comprises a plurality of rope hitch pull rods corresponding to the rubber drums and the rope hitch springs, the rope hitch pull rods sequentially penetrate through through holes of the rope hitch plate, the rubber drums, the middle supporting plate and the rope pitch springs, one end of each rope hitch pull rod is provided with a loosening-fastening nut for fixing the corresponding rope hitch spring, and the other end of each rope hitch pull rod is connected with the corresponding elevator lifting car lateral hauling rope through a connecting assembly. The elevator weighing device is simple in structure, high in lifting car weighing detection accuracy, low in cost, capable of saving shaft space, convenient to install, debug and operate and high in safety performance.
Owner:HITACHI ELEVATOR CHINA

Self-frequency-doubling all-solid-state yellow-light laser

The invention relates to a self-frequency-doubling all-solid-state yellow-light laser. The laser comprises an excitation source, a focusing system, a self-frequency-doubling crystal and a laser resonator, wherein the self-frequency-doubling crystal is a ytterbium-ions-doped rare-earth calcium oxoborate crystal and is cut along the maximum direction of the effective nonlinear coefficient of a non main plane of the crystal; the excitation source is a 900-980nm light source; and the laser resonator is composed of an input cavity mirror and an output cavity mirror, the input cavity mirror and the output cavity mirror are each provided with a medium membrane for inhibiting vibration of a 1020-1080nm wave band, excitation light is subjected to collimating focusing and is injected into the self-frequency-doubling crystal through the input cavity mirror, the self-frequency-doubling crystal absorbs energy of the excitation light to generate fundamental frequency light in the laser resonator, and the fundamental frequency light carries out selection wavelength frequency multiplication through the self-frequency-doubling crystal so that 570-590nm yellow-light laser is output. The laser provided by the invention has the advantages of high output power, simple and compact structure, low cost, high temperature adaptability and the like.
Owner:SHANDONG UNIV

Four-wing chaotic signal source circuit and signal amplitude control method thereof

The invention discloses a four-wing chaotic signal source circuit and a signal amplitude control method thereof. The four-wing chaotic signal source circuit is characterized that a multiplying circuit composed of four multiplying units, an integration summation circuit composed of eight resistors (one of the resistors is an adjustable resistor or a potentiometer), three capacitors and three operational amplifiers, an inverse-phase amplifying circuit composed of four resistors and two operational amplifiers and a direct-current power supply output four-wing chaotic signals; and the circuit is divided into three branches, the adjustable resistor is used for adjusting feedback strength of product signals of a third dimension circuit, and accordingly, amplitudes of the other two branches of chaotic signals are controlled. According to the signal amplitude control, amplitude changes of variables of a system are sacrificed to exchange for amplitude regulation freedom degrees of another two systems, and accordingly, amplitude-controllable chaotic signals meeting engineering needs are obtained. The circuit is simple, chaotic signal amplitudes can be regulated flexibly to a required range, and the circuit and the control method can be widely applied to chaotic radars, secret communication and fluid mixing.
Owner:JIANGSU INST OF ECONOMIC & TRADE TECH

Multiband matching circuit, radio frequency circuit, antenna system and mobile terminal

The invention relates to a multiband matching circuit, a radio frequency circuit, an antenna system and a mobile terminal. Specifically, the matching circuit is designed into the structure of an adjustable capacitor and an inductor group which are connected in parallel, wherein the inductor group comprises at least one inductors which are connected in series in turn, and one switch is connected in parallel on each inductor. Meanwhile, a program control unit is also arranged in the matching circuit. The capacitance value of the adjustable capacitor can be controlled and different switches can be selected through the program control unit so that different capacitor and inductor combination forms can be realized, and free adjustment of the capacitance and induction values in the circuit can be realized. With application of the matching circuit, the requirements of characteristic impedance of different transmission lines can be adapted by adjusting the circuit parameters of the matching circuit in the debugging and use process of the radio frequency circuit, and performance debugging of multiple bands can be realized on one set of matching circuit so that the debugging difficulty can be reduced, the number of the matching circuits in the radio frequency circuit can be reduced, the circuit structure is simple and the laying space of the circuit board can be saved.
Owner:QINGDAO HISENSE MOBILE COMM TECH CO LTD

Novel chaos source based on quadratic-term nonlinear effect and signal amplitude and polarity control method

InactiveCN102957530ASimple circuitAmplitude and polarity controllable reductionSecuring communicationVIT signalsCapacitance
The invention discloses a novel chaos source circuit based on quadratic-term nonlinear effect and a corresponding signal amplitude and polarity control method. The novel chaos source circuit is characterized by implementing output of a special chaos attractor by adopting a multiplying circuit consisting of three multipliers, an integration summing circuit consisting of seven resistors (including rheostats or potentiometers), three capacitors and three operational amplifiers, and an inverse-phase amplifying circuit consisting of four resistors and two operational amplifiers. The feedback intensity of product signals is partially and synchronously adjusted by the potentiometers, so that the partial and whole control on the amplitudes of output signals can be realized; and the polarities of linear feedback signals can be selectively controlled by switches, so that the polarity control on two paths of chaos signals can be realized. The partial amplitude control provided by the invention gives up the amplitude variation of a variable, and the polarity control only aims at two state variables. The novel chaos source circuit and the signal amplitude and polarity control method have the advantages of simple signal source circuit, special attractor, adjustable amplitude and controllable polarity, and can be widely applied to the fields of chaos radars, secret communication and the like.
Owner:JIANGSU INST OF ECONOMIC & TRADE TECH

Comb tooth lifting type automatic carrier

The invention discloses a comb tooth lifting type automatic carrier. A lifting rack is provided with comb teeth for bearing automobile wheels; an automobile body is connected with the lifting rack through a lifting device; the lifting device comprises two lifting jacks and a lifting driving motor; the lifting jacks are respectively mounted at two ends of the automobile body; each lifting jack comprises a seat, a lifting guiding shaft, a gear and a rack; each seat is connected with the automobile body; each lifting guiding shaft can slide along a guiding hole in the corresponding seat; the top of each lifting guiding shaft is connected with the lifting rack; each gear is connected with a shaft end of the lifting driving motor and is rotatably connected to the inside of the corresponding seat; each rack is connected with the corresponding lifting guiding shaft and is meshed with the corresponding gear; and safety devices for preventing the lifting rack from overturning due to unbalance loading are respectively arranged at four corners of the automobile body and four corners of the lifting rack. A guiding device of the lifting rack and the lifting device are integrated in one of the lifting jacks, and guiding precision of the guiding device of the lifting rack is not affected by the automobile body and the lifting rack which has a welding structure; and the number of the used lifting jacks is small, transmission is simple, requirements on mounting precision are reduced relatively, and the comb tooth lifting type automatic carrier is easy to mount and low in debugging difficulty; and using failure rate is reduced.
Owner:SHANDONG TIANCHEN INTELLIGENT PARKING EQUIPMENT CO LTD

Dual-wavelength phase-shift interference aspheric surface measurement method and device based on partial compensation method

ActiveCN107764203AReduce system design difficulty and costShorten instrument design cyclesUsing optical meansSurface measurementPhase shifted
The invention belongs to the technical field of optical precision testing, and relates to a dual-wavelength phase-shift interference method based on a partial compensation method and an implementationdevice. The method comprises the steps of building a partial compensation method dual-wavelength phase-shift interferometer, and acquiring measured wavefront wrapped phases of two single wavelengths;modeling a partial compensation method dual-wavelength ideal interferometer, and acquiring residual wavefronts and wrapped phases of the two single wavelengths; eliminating known and unknown wavefront variations in the measured wavefront wrapped phases by adopting an error separation and elimination algorithm, and finally optimizing and reconstructing surface-shape error of the measured asphericsurface by adopting reverse iteration. The device comprises a first laser, a second laser, a first slit, a second slit, a first plane mirror, a second plane mirror, a first beam splitter, a second beam splitter, a beam expander, a collimating mirror, a standard plane mirror, a phase shifter, a partial compensating mirror, a measured aspheric surface, an imaging lens and an interferogram acquisition assembly containing a sparse array sensor. The method and device provided by the invention are particularly applicable to processing quality measurement for gradient aspheric surfaces with a small surface-shape error, molded aspheric surfaces with a great surface-shape error and free curved surfaces.
Owner:BEIJING INSTITUTE OF TECHNOLOGYGY

Measuring device of quantum efficiency of CCD device

The invention brings forward a measuring device of the quantum efficiency of a CCD device. The measuring device comprises a light source, a monochromator, an integrating sphere, a beam expander, adjustable diaphragms, a darkroom, a standard detector, a CCD driving circuit, a picoammeter, and a master control computer; the CCD device and the standard detector are arranged in the darkroom; an output port of the monochromator is focused and amplified, collected to an optical fiber bundle, and injected to the integrating sphere; a light outlet of the integrating sphere is additionally provided with the beam expander, light is collected via the beam expander, and the light after collection and collimation enters the darkroom and is projected to the detected CCD or the standard detector via the adjustable diaphragm; and data acquisition is performed via the CCD driving circuit and the picoammeter, and data is transmitted to the master control computer for processing. According to the measuring device, the light outlet of the integrating sphere is additionally provided with the beam expander system so that the uniformity of the light source is improved, the effect of collecting and collimating the light is achieved, and the utilization rate of light energy is increased.
Owner:THE 41ST INST OF CHINA ELECTRONICS TECH GRP

Circulating fluid bed boiler online optimized self-learning control method

The invention discloses a circulating fluid bed boiler online optimized self-learning control method, which is characterized in that: a load knowledge base, a bed temperature knowledge base, a secondary air volume knowledge base and a self-learning updating algorithm are provided, so a characteristic value and a running experience value of a boiler can be extracted, stored and utilized to improve the control performance. A heat efficiency online optimizer adjusting bed temperature and a second air volume are provided, a built-in Newton gradient optimization algorithm can be used to instantly optimize the combustion heat efficiency, so the combustion process of the boiler is approximate to an economical combustion best area. A single-loop-multi-impulse intelligent control algorithm can be adopted for controlling the temperature of a boiler bed layer, so multiple variables influencing the bed temperature can be coordinated and controlled after being effectively decoupled, and the integration of the safety target and the economic target can be realized. Due to the adoption of the control method, the safe, stable and high-efficient running of the circulating fluid bed boiler can be realized, the robustness is strong, fault-tolerant capacity for a preset experience value can be realized, and the debugging difficulty of the control system can be reduced.
Owner:ZHEJIANG UNIV

Digital synchronous pulse wireless low-jitter transmission method

InactiveCN102684653AGuaranteed for special applicationsReduce design difficultyPulse manipulationWireless transmissionRadar
The invention relates to a digital synchronous pulse wireless low-jitter transmission method in the field of pulse wireless transmission communication, and the method is especially applicable to wireless low-jitter transmission of radar pulse. Pulse shaping is carried out at a transmitting terminal, a PLL (Phase Locked Loop) circuit is adopted for enabling a reference clock to be in phase synchronization with a pulse synchronous clock, and the synchronized reference clock is utilized for performing digital sampling, coding, modulation and other modulation steps on pulse; and a PLL circuit is adopted at a receiving terminal for enabling a reference clock to be in phase synchronization with the reference clock at the transmitting terminal, the synchronized reference clock is utilized for completing pulse demodulation, decoding, recovery and other demodulation steps, and a low-jitter pulse signal is finally output. The digital synchronous pulse wireless low-jitter transmission method can be used for well recovering the pulse at the transmitting terminal and has low requirements on the clocks in the system, and main circuit components are realized by adopting an FPGA (Field Programmable Gate Array) or an ASIC (Application Specific Integrated Circuit) so as to be low in design and debugging difficulty.
Owner:NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP

Microwave cavity filter intelligent debugging method based on particle swarm optimization algorithm

The invention provides a microwave cavity filter intelligent debugging method based on a particle swarm optimization algorithm, and the method comprises the steps: firstly, randomly changing the length D of each coupling screw in an electromagnetic simulation model of a microwave cavity filter into a cavity, obtaining a corresponding dissipation parameter S, and constructing an original sample data set; secondly, preprocessing the data in the sample data set; based on a block modeling method and a BP neural network, performing training to obtain an electromechanical characteristic model of themicrowave cavity filter; and finally, based on the electromechanical characteristic model and a particle swarm optimization algorithm, debugging the microwave cavity filter to be adjusted. The adjustment amount of each coupling screw is determined through a particle swarm optimization algorithm, so that the value of the value function is continuously reduced until the output of the microwave cavity filter meets the preset performance index, and the debugging process of the microwave cavity filter is completed. The debugging method has the beneficial effects that the debugging difficulty is reduced, the debugging precision and the debugging speed are improved, and the practicability and the applicability are high.
Owner:CHINA UNIV OF GEOSCIENCES (WUHAN)

Reconfigurable arithmetic unit supporting multiple working modes and working modes thereof

The invention discloses a reconfigurable unit supporting multiple working modes and the working modes thereof. The reconfigurable unit is characterized by comprising a control layer, an arithmetic layer and a storage layer; the control layer comprises a state layer interface, a configuration layer interface, a data layer interface, an address generator and a controller; the arithmetic layer comprises an arithmetic device; the storage layer comprises a source operand cache unit and a destination operand cache unit. The working modes of the reconfigurable arithmetic unit comprise the storage arithmetic mode, the pulse arithmetic mode and the stream arithmetic mode, and higher flexibility is provided for algorithm mapping of a computing system. When task mapping is carried out in the computing system, the specific working modes of the reconfigurable arithmetic unit can be selected according to specific features and the bottleneck of the algorithm to be mapped and in combination with specific conditions of network communication and storage bandwidth in the computing system, therefore, the arithmetic throughput capacity and network communication and storage access pressure are considered, and the working efficiency of the whole system is improved.
Owner:HEFEI UNIV OF TECH
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