568results about How to "Simple system structure" patented technology

To provide a technology capable of improving reliability and manufacturing yield of a semiconductor device by reducing variations of electrical characteristics in connection hole portions. After a semiconductor wafer is placed over a wafer stage provided in a chamber for dry cleaning treatment of a deposition system, dry cleaning treatment is performed to a principal surface of the semiconductor wafer by supplying reducing gas, sequentially, heat treatment is performed to the semiconductor wafer at a first temperature of 100 to 150° C. by a showerhead which is maintained at 180° C. Next, after the semiconductor wafer is vacuum transferred from the chamber to a chamber for heat treatment, heat treatment is performed to the semiconductor wafer at a second temperature of 150 to 400° C. in the chamber, thereby removing a product remaining over the principal surface of the semiconductor wafer.

The invention relates to a campus classroom attendance checking-in system and a method for realizing attendance checking-in by using the system. The system comprises student mobile terminals, a class AP (Access Point), a class mobile terminal, a class server and a background server. The system is characterized in that the student mobile terminals and the class mobile terminal are connected through the class AP and the class server; and the class server is connected with the background server through the class AP. The campus classroom attendance checking-in system provided by the invention can be used for realizing the attendance checking-in of students by means of matching the student mobile terminals and the class mobile terminal with the server. According to the system and the method provided by the invention, the problems of low roll-call efficiency and low classroom scoring efficiency in the conventional university teaching can be overcome. The campus classroom attendance checking-in system has good practical values.

A first channel is formed in the side of a first diffusion plate which is on that side of a gas inlet tube and a recess is formed in the side which is on that side of an electrode plate. The first channel and the recess communicate with each other through a plurality of inlet ports. The first channel and the inlet ports form a gas flow passage L which leads to the recess from the gas inlet tube. As a process gas supplied from the gas inlet tube passes through the gas flow passage L, it is supplied, dispersed, to a hollow portion formed between the recess and the electrode plate.

A display apparatus 10 has a display screen 11 comprised of plurality of pixels displaying images based on image data, light sensors 14 to detect light entering the display screen 11 and arranged with display elements 13 to form the pixels, and compound imaging systems 20 comprised of imaging lenses 211 forming images of a subject in the light-receiving part of the light sensors 14. Images of a subject are output from the plurality of light sensors 14, and a signal processing circuit 35 synthesizes the image signals to generate image data. The image displayed by the display screen 11 is based on the image data output by the signal processing circuit 35.

Accessory-driving equipment connects an engine having an idle stop system, a motor-generator and an accessory including an air-conditioner compressor that is driven even at a time when the idle stop system is operated. The accessory is driven by the engine when the engine is running and driven by the motor-generator when the idle stop system is operated. The accessory-driving equipment includes a first shaft for connecting to the engine, a second shaft for connecting to the motor-generator, a third shaft for connecting to the accessory, a lock device for locking the third shaft and a clutch. The clutch and the lock device are operated so that a torque transmitted from the engine through the first shaft is distributed to the motor-generator and the accessory, or a torque is transmitted from the motor-generator to the engine.

A dual-motor power system or a dual-motor hybrid power system for a vehicle comprises a first motor, a second motor, an intermediate shaft, a first gear set disposed between a first driving shaft, and an intermediate shaft. The first driving shaft couples with the intermediate shaft via the first gear set, a second gear set disposed between the second driving shaft and the intermediate shaft, and a single synchronizer disposed around the second driving shaft. The synchronizer can be switched between a neutral position, a first-speed-ratio position, and a second-speed-ratio position. In the neutral position, the second driving shaft is decoupled from the first and second gear sets. In the first-speed-ratio position, the synchronizer couples the second driving shaft with the intermediate shaft via the first gear set. In the second-speed-ratio position, the synchronizer couples the second driving shaft with the intermediate shaft via the second gear set.

The present invention provides an online gas-solid two-phase detection method for coal characteristics based on laser induction, and an apparatus thereof. The apparatus comprises a sampling pipe, a coal powder conveying pipe, a cyclone separator, a coal powder falling pipe, a measurement room and a spectrum detection system. The detection method comprises that: the coal powder is subjected to continuous sampling at a proper position on an air-powder pipeline by the sampling pipe, wherein the air-powder pipeline is arranged between a coal mill outlet and a burner inlet; a cycle process of sampling, measuring and returning of the coal powder is realized with the effect of compressed air. According to the present invention, with adopting the measurement system of the measurement method, the taken gas-solid two-phase coal powder particles can be subjected to laser detection only after the simple gas-solid separation by the cyclone separator, and the sample preparing is not required; the gas conveying manner is adopted, and the mechanical transmission apparatus is not used so as to contribute to long term and reliable operation of the whole apparatus in the field environment, and really realize the online detection of the coal characteristics.

The invention discloses an image spectrum detection method and system. The system comprises an imaging lens set, a DMD, imaging lenses, an area array CCD camera, a convergent lens set, an optical fiber coupler, an optical fiber, a fiber optical spectrometer and a processor. Both the CCD camera and the fiber optical spectrometer are connected to the processor. A micromirror in a micromirror device has the opening state and the closed state. Incident image signals transmit the imaging lens set to form incident light signals and then enter the micromirror device. When the micromirror in the micromirror device is in the closed state, reflecting light signals are imaged to the surface of the CCD camera through the imaging lenses; when the micromirror in the micromirror device is in the opening state, the light signals are reflected to the convergent lens set, converged to the optical fiber coupler, coupled to the optical fiber, and transmitted to the fiber optical spectrometer for spectrum measurement. The image spectrum detection system can be provided with any fiber optical spectrometer, broadband spectrum measurement is achieved, and the spectral resolution can be increased to 0.0001 order of magnitude through the image spectrum detection system according to the technical parameters of an existing commercial fiber optical spectrometer.

An intelligent control method for platform screen doors is provided, which belongs to the field of automatic control technology. In the method, firstly the images of platform in train pull-in and pull-off states are collected by a CMOS camera and then outputted to a signal processor, the signal processor extracts feature information of the images and produces two basic templates and simultaneously establishes equations and indices for determining image threshold grey level of field image and basic template and error and correlation therebetween; then the filed images are collected by the CMOS camera and outputted to the signal processor, the signal processor processes and identifies the filed images and then produces an accurate control command and outputs the command to a controller; and finally the controller converts the received digital control command to an analog control command and the outputs to a driver, and the driver drives a servomechanism of the screen door after the amplification of the analog control command. The invention has high operational reliability and high identification accuracy, and can ensure the comfort and safety of pick-up and drop-off for passengers.

The embodiment of the invention discloses a laser radar system. The laser radar system comprises a light source module, a modulation light module, a transmitting-receiving module, a detection module and a signal processing module, wherein double-wavelength laser beams are subjected to linear modulation through a modulation light module and are converted into double-frequency linear frequency modulation continuous wave laser beams; one laser beam is used as a local oscillation light beam and the other laser beam is used as signal light which has mutual effect with a detection target; the signal light scatters an echo signal through the detection target; the local oscillation light beam and the echo signal are subjected to coherent beat frequency, so as to obtain double-wavelength Doppler frequency shift difference value information. The laser radar system disclosed by the invention adopts double-wavelength linear frequency modulation laser so that influences, caused by non-linear linear frequency modulation and an atmospheric turbulence effect, on a speed measuring resolution ratio are extremely reduced; distance measurement and speed measurement are carried out on the detection target at the same time; the laser radar system has the advantages of high detection precision, electromagnetic interference resistance, no distance dead zones and the like.

Thorough optimization and improvement have been made on the basis of original closed-shelf stack room by the unattended full-automatic book management system of the invention. The concept of a book basket is brought in to process an order of each borrower in a batch. The device is simplified and the efficiency of single functional part is enhanced during the period of storing books, taking books, returning books, conveying a book basket and transmission, thereby the functions of the whole system being optimized. The system includes bookracks, a laneway vehicle, a laneway vehicle interface, a transmission device, a book taking window, and a book returning window, and further includes a book basket and a book box independent of the bookracks. The data information inside the database of the closed-shelf stack room system is administered and operated by the closed-shelf stack room management system to accomplish the interaction between the collection system and the control system of the full-automatic closed-shelf stack room. Ultimately books are administered through the full-automatic closed-shelf stack room.

The invention relates to a load frequency response test system of a hydraulic cylinder and a test method thereof. The technical scheme of the system is as follows: the oil outlet of an oil pump (9) is communicated with the port P of an electro hydraulic servovalve (13), wherein, the opening A or the port B of the electro hydraulic servovalve (13) is communicated with the rodless chamber of a hydraulic cylinder (2) to be tested, and the rod chamber of the hydraulic cylinder (2) to be tested is communicated with an oil tank (11); the hydraulic cylinder (2) to be tested is installed in a closed stander (1); a displacement sensor (3) is installed on the hydraulic cylinder (2) to be tested and is electrically connected with the A / D port of a data collecting card (5) and a PID controller (6); and one end of a servoamplifier (7) is electrically connected with an electromagnet of the electro hydraulic servovalve (13), the other end of the servoamplifier (7) is electrically connected with one end of the PID controller (6), the other end of the PID controller (6) is electrically connected with the D / A port of the data collecting card (5), and the data collecting card (5) and computer-aided test software (4) are installed in a computer. The load frequency response test system has the advantages of simple systematic structure, accurate test and high degree of automation.

The invention discloses a device and method of a microwave photon channelized receiver of zero intermediate frequency. As shown in the drawings, the device comprises a laser diode (LD), two local oscillator signals (LO1, LO2), a DP-QPSK modulator, an optical band-pass filter (OBPF), a single polarization modulator (MZM), a splitter, a narrowband OBPF group, a polarization controller (PC), a polarization beam splitter (PBS), a balance detector (BPD) and a multi-channel ADC. The DP-QPSK modulator generates polarization multiplexing signals of an optical frequency comb and positive and negative second-order sidebands, a radio frequency (RF) signal modulates the positive and negative second-order sidebands, a generated lower sideband is within a spectral line of the optical frequency comb, and the narrowband OBPF group performs balance detection after channel division and performs demodulation to obtain IQ data. DC bias and even distortion are suppressed by the balance detection, and the IQ amplitude and the phase balance can be finely corrected by optical power and a polarization state.

The invention relates to a redundancy control system and a redundancy control method for wind power generation propeller change. The redundancy control system is characterized by comprising a first set of propeller change systems, a second set of propeller change systems, a third set of propeller change systems, a supervisory computer and a three-phase AC power supply, wherein the input end of the three-phase AC power supply is connected with the input end of an AC power supply of the first set of propeller change systems, the second set of propeller change systems and the third set of propeller change systems; the first set of propeller change systems, the second set of propeller change systems and the third set of propeller change systems respectively comprise servo controllers, a propeller change motor, a backup DC power supply, a main contactor group and a brake device; and the supervisory computer is connected with the first set of propeller change systems, the second set of propeller change systems and the third set of propeller change systems and used for monitoring whether the systems generate AC power supply failure or not and all the servo controllers generate failure or not and controlling the propeller change motor to reliably feather propellers. The invention not only has relatively simple system structure but also can ensure low cost under the condition of not increasing the quantity of system devices and can be widely used for wind power generation systems.

The invention discloses a simple method for detecting the phase sequence of three-phase industrial-frequency alternating current and a detection device. In the invention, the zero-crossing rising edges of the three-phase voltage are respectively sampled, measured at a single point and compared by using the principle of phase time difference of the three-phase industrial-frequency alternating current, and the phase sequence and phase position of the three-phase industrial-frequency alternating current are judged by calculating the phase time difference. The method comprises the following steps: measuring the voltage rise zero-crossing point of any phase (defined as A) of the three-phase alternating current, and starting to calculate time with a clock by using the rising edge zero-crossing point of the Phase A as the reference point; then sequentially measuring the voltage rise zero-crossing points of the other two phases, and measuring the time differences T1 and T2 between the phase position rise zero-crossing point and the reference point of each of the two phases; and judging Phase B and Phase C through calculation. The method can measure three-phase industrial-frequency alternating current. The integrated multifunctional detection device has the advantages of miniaturization, systematization, simple structure and small calculated quantity, and can reduce the labor intensity of electrical installation and maintenance personnel.

A laser interferometer system for measuring roll angle around the direction of linear displacement comprises a light source of a frequency stabilized input beam (15) with two linear orthogonally polarized components which may or may not be of the same frequency, a polarizing beam splitting prism, two quarter-wave retardation plates, a corner cube retroreflector, a prism assembly, attached to the mechanical apparatus whose roll angle of travel is to be measured, a wedge mirror assembly, a polarizer, a photoelectric detector, and a phase meter; the light source emits a frequency-stable incident beam and generates a stable electric reference signal; under the actions of the polarizing beam splitting prism, quarter-wave plate and corner cube retroreflector, the incident beam travels twice through and then reflected twice by the wedge mirror assembly, and finally exits from the polarizing beam splitting prism. The polarizer mixes the orthogonal components of the output beam and the photoelectric detector generates an electric signal and then the phase meter compares the phase difference of said electric measurement signal with said electric reference signal, then the roll angle of travel can be measured. The advantage of present invention is: the system has simple structure but with high measurement precision, it can be applied to the precision geometrical measurement and the establishment of precision benchmark metrology in wide high-tech fields such as military industry, aerospace engineering and digital controlled machine tools.

The invention discloses an automatic acquisition system of baggage appearance information based on monocular vision and a method thereof. The system mainly comprises a loading platform, a color camera, a lighting device, an image processing module and a server, wherein the loading platform comprises a horizontal calibration board, a vertical calibration board and a mounting platform. The method comprises the following steps: segmenting a baggage area from a baggage image to obtain projection of a baggage on the horizontal calibration board and the vertical calibration board, so as to calculate the length, width and height of the baggage; and transforming color space of the baggage image to extract main color features of the baggage, and categorizing the main color features to obtain information on the color of the baggage. In addition, the method also comprises extraction and categorization of texture features of the baggage to obtain texture information of the baggage. Due to the automatic extraction of information on the size, color and texture of the baggage through computer vision and image processing, the invention can realize the automatic acquisition of the baggage appearance information, and is particularly suitable for acquisition of baggage information in accidents in small airports, railway stations, bus stops and the like.

The present invention relates to a playing storage apparatus whose body is provided with a signal I / O connector and a controlling key. The controlling circuit in the body comprises an audio output circuit connected with the data process circuit, a data I / O interface circuit and a controlling key. The data I / O interface circuit is a USB interface circuit. The body is only provided with a signal connector. The connector has four wires, wherein first signal connecting end and second signal connecting end are connected to the first audio signal wire connecting end and the second audio signal wire connecting end of the audio output circuit, and to the first signal wire connecting end and the second USB signal wire connecting end of the USB interface circuit by a switching module. The third grounding connecting end, the forth signal wire is a controlling connecting end, which is connected to the power of the controlling circuit and is multiplexed with the USB power wire of the USB interface circuit. The present invention uploads and downloads the data and outputs the audio signal by multiplexing the signal connector. The volume of the apparatus is small, and its structure is simple so as to greatly reduce the limit from the industrial design.

The invention discloses a QKD system sending terminal based on a phase modulation light source, a receiving terminal, a QKD system and a method thereof. By using the QKD system based on the phase modulation light source, at the sending terminal, the phase modulation light source is adopted; and through X basis vector phase coding and Z basis vector time coding modes, a light pulse pair is coded and then the light pulse pair is sent to the receiving terminal. In the invention, the phase modulation light source is used and a low half-wave voltage is possessed so that energy is saved and a possible is provided for a high speed application of the system; and a bias point problem of an intensity modulator does not need to be considered.

The invention provides a tomographic method and a system for coherent optics in complex spectrum frequency domain, comprising a broadband light source, a light source coupling mechanism, a combined interferometer, a fiber-optics imaging probe, a spectrograph, a temperature controller and a computer; the method comprises the following steps of: firstly, measuring three groups of interference spectrum in state of three different phases of reference light; secondly, calculating two groups of differential interference spectrums; thirdly, taking the sum and the remainder of the two groups of differential interference spectrums as a real part and an imaginary part for a complex amplitude so as to reconstruct the interference spectrum of the complex amplitude in a wave number space; finally, making an inverse Fourier transform for the interference spectrum of the complex amplitude and obtaining depth-scanning information of a measured sample along an optical axis, that is chromatogram. Under the condition that a regulating device for the phase of the reference light is not used, the tomographic method and the system eliminate the effect for chromatogram quality caused by a parasitic image and a hetero conjugation image, and can realize the tomography which reflects the real structure of the measured sample with the advantages of simple system structure, wide dynamic scope and deep measurement in full scale.

The invention provides a law enforcement and evidence taking system for car horning. The system is composed of a sonar system and a high-definition camera. The sonar system is responsible for collecting sound data, calculating a spectrum characteristic, and determining whether a horn sound is an effective one based on the spectrum characteristic; and if the horn sound is an effective one, the high-definition camera is triggered to capture a car image, licence plate information is identified, and car horning feature audio frequency information is recorded. Meanwhile, the sonar system calculates sound field data, draws a sound field graph, and provides a horn sound coordinate; and the horn sound coordinate, the licence plate information, and the car horning feature audio frequency information are stored and are used as a law enforcement basis. According to the system provided by the invention, defects in the prior art are overcome; accurate and strict evidence taking of car horning can be realized and evidence can be fixed, so that the reliable basis can be provided for law enforcement and punishment. Moreover, the system has advantages of simple structure, low cost, and high reliability and is suitable for large-area popularization and application.

In a hybrid water heater, a heat pump unit and a combustion heating unit are combined for heating water to be stored in a hot water tank. The combustion heating unit includes a combustor for heating water in a chamber by combustion operation. The chamber of the combustion heating unit communicates with the hot water tank through a first water port provided at an upper side of the hot water tank and a second water port provided at a lower side of the hot water tank, so that hot water heated in the chamber flows into the upper side in the hot water tank through the first water port, by using natural convection. Further, water in the hot water tank at the lower side flows from the second water port into the chamber.

The invention discloses an auxiliary heating system for a liquid-metal-cooled natural circulation reactor. The auxiliary heating system comprises a nitrogen storage tank (1), a filter (2), a gas heater (3), a hot nitrogen input pipe (4), a main container (5), a safety container (6), gas extractors (7), pipelines and valves, wherein the pipelines and the valves are used for interconnecting devices. The system has the advantages that the function that a liquid-metal coolant in a liquid metal pool type reactor is subjected to auxiliary heating from the outside of the main container of the reactor is realized, the system is simple in structure, components in the reactor are not required for being added or started during operation, so that liquid metal in the main container can form micro natural circulation after the operation of the system, and meanwhile, the reliability and safety of the reactor can be effectively improved.

A cursor control device for an image display includes a first sensing unit, a second sensing unit and a switching device. The first sensing unit is for detecting a first displacement of the cursor control device with respect to a surface and calculating a first coordinate variation of a cursor on the image display according to the first displacement. The second sensing unit is for sensing an object, detecting a second displacement of the cursor control device with respect to the object and calculating a second coordinate variation of the cursor on the image display according to the second displacement. The switching device switches output between the first coordinate variation and the second coordinate variation. The present invention further provides an image system and a cursor control method for an image display.

The invention requests a parking lot navigation system and method based on machine vision. The system is formed by a parking lot service center and a user mobile terminal on a vehicle. The parking lot service center comprises a vehicle tracking module, a data management module and a communication module, wherein the vehicle tracking module is formed by multiple groups of vision sensors which are installed in a parking lot and has an observation range which covers all passing and parking areas in the parking lot, local tracker corresponding to the vision sensors and a global tracker and is used for detecting an occupation state of each parking space and the movement state of a vehicle target of a parking lot passing area in real time. The user terminal comprises a navigation module and a communication module, the navigation module plans a vehicle driving path to carry out navigation according to a local vehicle position, free parking spaces and a parking lot real-time map from the parking lot service center received by the communication module. According to the system and the method, the intelligence of vehicle navigation in the parking lot is realized, and the parking efficiency and convenience in the parking lot are improved.

The invention discloses a device and a method for eliminating photonic microwave self-interference signals, and belongs to the technical field of microwave photonics. According to the device disclosed by the invention, useful signals received of a receiving antenna, self-interference signals and cancellation signals led out by a transmitting antenna are modulated to an optical carrier outputted by a laser by adopting an electro-optic phase modulator, a left sideband and a right side band of phase modulation optical carrier microwave signals are opposite in phase, right sideband plus optical carrier signals and left sideband plus optical carrier signals are acquired through an optical band-pass filter, and the signals are converted through a photoelectric detector so as to eliminate interference signals. The device disclosed by the invention does not need to carry out DC bias voltage control on the electro-optic phase modulator, so that the system structure is greatly simplified, and the system stability is enhanced. Amplitude and time delay regulation and control in an optical domain are great in bandwidth and high in regulation precision, and restrictions of small bandwidth and low regulation precision of an electronic technology are overcome.

The invention discloses a mobile phone two-dimensional code safe use method based on information hiding. With the development of information technology and Internet technology, people pay more attention to the convenient and environmental-friendly two-dimensional code technology, and the use of the two-dimensional code is wider and wider. However, a traditional mobile phone two-dimensional code is lack of a necessary security mechanism, people can use a two-dimensional code as long as the people have the two-dimensional code, and the security of the private information of the user is invaded. The method is based on the information hiding technology, the cryptography theory and bar code technology are utilized, through a method of embedding user secret information in encoding and carrying out extraction, operation and comparison in decoding, the safe use problem of the mobile phone two-dimensional code is solved, the leakage and stealing of the information are prevented, and the integrity and confidentiality of the information are ensured. The method is simple and practical, with the gradual popularization of the Internet technology at the present age, and method plays an important role for the security of the information.

In an in-vehicle image display system, each of a car navigation device and a rear-seat display device includes an own image-drawing IC. The car navigation device interfaces with a TV tuner and a DVD player. When receiving a request signal from the rear-seat display device, the car navigation device forwards relevant image data to the rear-seat display device using a dedicated line. The rear-seat display device converts the forwarded image data to image signals using the own image-drawing IC to thereby display them. Thus, the car navigation device and the rear-seat display device can display different display window images with a simple system structure where no image-drawing IC used for the rear-seat display device is provided within the car navigation device.