522results about How to "Simple hardware structure" patented technology

The present invention relates to an image processing apparatus and a method, and in particular to an image processing apparatus and a method preferably applicable to conversion of a wide dynamic-range image having a dynamic range of pixel values wider than the normal one to a narrow dynamic-range image having a narrower dynamic range of pixel values, and to enhancement of contrast. In step S1, an input wide-DR luminance image of the current frame is converted into a narrow-DR luminance image based on the intermediate information calculated for the previous frame's wide-DR luminance image. In step S2, the stored intermediate information of the previous frame is updated using the calculated intermediate information. In step S3, it is determined if there is any succeeding frame. If there is the succeeding frame, the process returns to step S1 and processes thereafter are repeated. The present invention is applicable to a digital video camera and the like.

The invention discloses an industrial robot capturing method based on a monocular camera and a three-dimensional force sensor. The method comprises the steps that the monocular camera and the industrial robot are calibrated, and the three-dimensional force sensor is initialized; the monocular camera acquires an object image, an upper computer conducts image processing and calculates the position information of an object, the robot is controlled to move to a position above the object according to the position information, and then the robot moves downwards vertically till making contact with the object to be captured; the three-dimensional force sensor senses the contact force information between the tail end of the robot and the surface of the object, the upper computer controls the industrial robot to stop moving according to contact force information and calculates the pose increment of the tail end of the robot, the posture of the robot is adjusted according to the pose increment till a pneumatic sucker at the tail end of the robot is attached to the plane of the object to be captured, and the pneumatic sucker acts to achieve capturing. By the adoption of the method, objects placed obliquely in a messy mode can be captured, and complexity of camera calibration and object space pose estimation is reduced.

A motion-adaptive interpolation apparatus and method are disclosed. After an image signal is received and horizontal directional inter-frame motion information of a field to be currently interpolated is estimation, and interpolating is suitably performed based on the motion information. According to one aspect of the present invention, a basic unit image region is set for a pizel to be interpolated, a block matching error (BME) is obtained by moving the basic unit image region at certain intervals in a different direction, a linear interpolated pixel value is detected in consideration of the block matching error, and a final interpolation value is calculated and outputted by applying a rule and filtering based on the linear interpolated pizel value. Thus, a picture quality is improved after de-interlacing, and a circuit for implementation of the operation is simplified, so that a unit cost can be reduced.

An apparatus and method for carrier frequency synchronization in an Orthogonal Frequency Division Multiplexing (OFDM) system are provided for correcting an initial carrier frequency offset in the OFDM system. A metric generator for frequency estimation performs a first accumulation process for a value computed by multiplying a Phase Reference Symbol (PRS) generated from a reception stage by a Fast Fourier Transform (FFT) output signal for an OFDM symbol in a PRS position within a frame, acquires a differential symbol from a product of adjacent FFT output symbols, performs a second accumulation process for a real part extracted from the differential symbol, and outputs a metric value for the frequency estimation. A maximal value-related index generator compares metric values for initial frequency estimation within a predetermined frequency offset estimation range, and selects and outputs a maximal metric value as a frequency offset estimate.

The invention discloses a dual-redundancy attitude control system of a coaxial unmanned helicopter, which consists of a serial communication module, a PCM (Pulse-Code Modulation) decoding module, an AD acquisition module, a PWM (Pulse-Width Modulation) output module and a CPU control module. The serial communication module, the PCM decoding module and the AD acquisition module are used as system input, the CUP control module carries out improved digital PID control, and the PWM output module carries out output in the form of PWM pulses, and thus, the control of a backward-stage high power valve is realized. A debug method comprises the following fives steps of: firstly, connecting a defined I/O port to a high or low-level end according to a parameter debug object; secondly, adjusting a potentiometer to provide initial parameters for Kp and Kd and controlling the backward-stage high power valve; thirdly, keeping a neutral position of Futaba unchangeable, adjusting the potentiometer so that a steering engine achieves a critical state of self-excitation vibration; fourthly, operating the Futaba to output a signal exceeding a pulse threshold; and fifthly, operating the Futaba to return to a central position. The method realizes the debug and the storage of relevant parameters, decreases interference and improves the system stability and the response speed.

The present invention provides a wardrobe intelligent management apparatus and method, and is used to the field of Internet of things and smart home technologies. The wardrobe intelligent management apparatus comprises an image collecting module, an image partitioning module, a clothing feature extracting module, a clothing storage module, and a human-computer interaction interface. The image collecting module shoots an image of clothing. The image partitioning module extracts the image of foreground (clothing). The clothing feature extracting module generates a feature vector of the clothing, wherein the feature vector comprises a clothing image, a color label, a color feature, a local texture feature, a texture category, a contour feature, and a contour category. The clothing storage module records information that the wardrobe stores the clothing. The wardrobe intelligent management method is based on the wardrobe intelligent management apparatus. A data table that clothing is stored in the wardrobe is used, and clothing storage, searching, and browsing are performed. According to the present invention, different clothing can be accurately recognized without adding a superfluous recognizer or changing an existing wardrobe structure, so that a structure is simple and costs are low.

The invention provides a monitoring device which is used for the high voltage cable connector status in a mine roadway, wherein, a temperature sensor, a humidity sensor and a current transformer are connected with a data acquisition unit through signal wires; the data acquisition unit, a data storage unit, a keyboard, a display unit, a clock unit and an acousto-optic warning unit are connected with a microcontroller unit through an I/O port; and the microcontroller unit is formed by the connection between a serial port and a communication unit. The invention is simple in structure, low in cost, safe and reliable in performance, and can monitor the temperature, current and humidity of the cable connector in real time, thus being applicable to the monitoring of high pressure cable connection device in the mine roadway and other high voltage electric power equipment.

The invention relates to a permanent-magnet and pulsed-eddy-current composite magnetic flux leakage detection method. With the method provided by the invention, defects on inner and outer surfaces can be effectively identified. The method belongs to the field of nondestructive test. With the effect of a permanent magnet, a ferromagnetic material requiring detection is magnetization into a local saturation state; if a detected magnetic flux leakage signal is larger than a preset intensity threshold B1, the ferromagnetic material has a defect; a reverse narrow pulse signal is applied to a excitation coil, such that the excitation coil generates a pulsed magnetic field, and pulsed eddy current is formed on the inner surface of the ferromagnetic material below two poles of a U-shaped magnetic yoke; at the time, if a detected leakage field intensity pulsation value is larger than a preset pulsation threshold B2, the defect is positioned on the inner surface of the ferromagnetic material; otherwise, the defect is positioned on the outer surface of the ferromagnetic material. The method provided by the invention has the advantages of simple hardware structure, low energy consumption, and convenient and fast signal processing.

The present invention which belongs to the matrix converter control technology is a control method for a matrix converter. An input phase voltage is divided into a main range and a transition range in which new P, M, N conditions and PM, NP, MN transition conditions are defined, some null vector is selected and the condition combination sequence of bidirectional power switches are adjusted in each modulation period to realize the safe, reliable and rapid commutation and the stable operation of the matrix converter. The present invention also provides a device to realize the present method, including a trigger driving circuit, an over-current protecting circuit, a synchronous signal detecting circuit, a voltage range dividing unit, a switch state control unit and a commutation control unit. Based on the two-step commutation strategy of the voltage of the transition range and without an extra measuring device to precisely detect the relative size relation of the input phase voltage, the present invention solves the problem of a short circuit caused by an inaccurate measurement of the input phase voltage during range alteration, and the waveforms of the output voltage and the input current are not affected.

The embodiment of the invention provides a three-dimensional scene fusion method and device based on monocular estimation. The method comprises the steps: inputting an obtained first image into a target monocular depth estimation network, and obtaining a target depth map, the target monocular depth estimation network being obtained through the training of an initial monocular depth estimation network; obtaining depth information of a target object in the target depth map according to the target depth map and the target semantic segmentation map; according to the depth information of the targetobject and the parameter information of the equipment for collecting the first image, the position information of the target object in a preset static three-dimensional scene is obtained, and a mapping relation exists between a coordinate system of the static three-dimensional scene and a world coordinate system where the target object is located. The problem that in the prior art, due to the fact that a target depth estimation method is not ideal in implementation, the fusion mode of a monitoring object and a static three-dimensional scene model is not ideal is solved.

An open-phase detecting method wherein a simple hardware structure is used to achieve a reduced cost: the IRQ member is reduced to reduce the load on a CPU; the open phase detection is performed in two items, that is, a phase difference and a voltage sign to reduce the possibility of occurrence of erroneous detections; and any phase that is open can be also determined. In the method for detecting any open-phase of the power supply of a three-phase converter, a neutral point N1 is connected to a negative pole side bus N of the DC side output of the rectifying means; an end of the first resistor of each phase, which connects the first resistor to the second resistor of each phase, is connected to an AD converter via a high input impedance means of the respective phase to detect the voltage of the respective phase; the voltage of the respective phase is outputted to a CPU that serves as an open-phase detecting means; and an open phase is detected when the sings of two of the three line voltages determined based on the voltages of the respective phases are different from each other and a phase difference thereof exhibits a half-wave rectification waveform of 180°.

Backlight of a backlight device (3) attached to a liquid crystal panel device (2) is created by a multitude of light emitting diodes, and light emitted from each light emitting diode is modulated by position information indicating the position of a display screen (21A). The light receiving device (4) receives the backlight, modulates it, takes out the position information and detects the position on a display screen (21A) based on the position information.

The invention discloses a digital out-of-pile nuclear measurement system based on a PC/104 bus. The digital out-of-pile nuclear measurement system comprises a neutron detector, a front-end signal conditioning and amplifying unit and a signal digital processing unit, wherein the signal digital processing unit comprises a host processing unit, a data acquisition unit and a data output unit which are connected through the PC/104 bus. Compared with the prior art, the digital out-of-pile nuclear measurement system based on the PC/104 bus utilizes the PC/104 bus as a safety software platform, facilitates adjusting of the control scheme and realization of various novel control strategies, reduces the number of components, and simplifies the hardware structure, thereby improving the reliability and meeting the requirement for nuclear safety digitization of ex-core nuclear instrumentation systems in large-scale nuclear power stations.

The invention provides a blood pressure measuring method and device, and belongs to the technical field of blood pressure measurement.The problems that existing blood pressure measuring equipment with no cuff cannot call computing parameters conveniently, and errors are likely to be caused are solved.The blood pressure measuring method comprises the steps that calibration data matched with user identity characteristic data is built and prestored through electrocardiogram wave signals at first; when a user measures blood pressure, the prestored calibration data of the user is extracted according to the g method comprises the steps that calibration data matched with user, and automatic identification of the user identity is achieved; the phenomenon that the user manually inputs identity information and selects calibration parameters is avoided, the trouble that identity information needs to be frequently and manually input to select calibration parameters on the condition that multiple users share equipment is solved, using convenience is improved, and error probability is reduced.The blood pressure measuring device is simple in hardware structure, convenient to use and operate and suitable for being used by multiple users at the same time.

The invention belongs to the field of wind power generation and particularly relates to a device for monitoring inclination and settlement of a tower of a wind generation set. The device is characterized by comprising a laser transmitting and receiving unit, a signal processing and operating unit, a communication unit and an upper computer; the laser transmitting and receiving unit is composed of three laser distance measuring sensors and three laser baffle boards; the laser distance measuring sensors are used for measuring the distance between the sensors and the baffle boards. When the tower inclines or settles, the distance between the sensors and the baffle boards, namely detection data of the three laser distance measuring sensors, are changed, the detection data are processed through an algorithm in the signal processing and operating unit, results obtained through operation are sent to the upper computer to be displayed in real time through the communication unit, and the inclination angle and the settlement distance of the tower are obtained. According to the device, online monitoring for inclination and settlement of the tower of the wind generation set is achieved by combining the laser distance measuring and multi-point positioning technique with an effective calculation method, and the device has the characteristics of being accurate and high in precision.

The control card consists of control unit, switching value input unit and signal output unit. The control unit includes RS-232, quartz multivibrator, circuit for monitoring power supply; switching value input unit includes acquisition module and isolation shaping module; signal output unit includes current signal output unit and direction signal output unit. 8254 programmable chip is adopted in pulse control circuit for counting and timer. X5045 is utilized in EEPROM chip. Features of the card are: simple hardware structure, few number of pins, and no need of driving program.

The invention discloses a quick acquiring method for multi-frequency-point bioelectrical impedance. A multi-frequency-point composite excitation source Vin is realized based on a DDS (direct digital synthesizer) principle by means of FPGA (field-programmable gate array) programming, the composite excitation source Vin is loaded onto reference resistance Rref and to-be-tested organism electric impedance Zx simultaneously, corresponding amplitudes Ampref and Ampx and phase angles Degref and Degx of the Vref and Vx on frequency points can be acquired accurately by reasonably selecting sampling frequency fs and points N of DFT (digital Fourier transform) and by only performing DFT on the Vref and Vx on the several needed frequency points, and further amplitudes of the to-be-tested organism electric impedance Zx on the frequency points are acquired. The quick acquiring method has the advantages of high impedance acquisition accuracy, small operation amount, high anti-jamming capability, short scanning time and the like.

The invention relates to a frequency-hopping transmission system based on a double-pattern fast synchronization method. The system can quickly and stable establish synchronization, initial synchronization is established quickly through a short period frequency-hopping pattern, and stable synchronization is kept through a long period frequency-hopping pattern. The system performs data processing through a base band module formed by a programmable logic device, i.e., packaging and depackaging of protocol frames, frequency-hopping pattern generation, system synchronization and system multi-parameter configuration, etc.; radio frequency characteristic processing is completed through software configuration of a radio frequency integrated chip, i.e., up/down-conversion, modulation and demodulation, low noise amplification and power amplification, etc.; system working parameters can be realized by configuring a base ban module and a radio frequency system according to application requirements; and a system working mode can be set as a fixed frequency or frequency hopping communication system according to communication requirements, convenient and flexible configuration can be performed through an upper computer interface. The double-pattern fast synchronization method enhances anti-interference performance of the system, shortens synchronization establishing time, and is good in confidentiality and strong in anti-interference capability and anti-interception capability.