33results about How to "Improve signal processing efficiency" patented technology

The invention discloses an S-band receiving-transmitting integrated processor system. The S-band receiving-transmitting integrated processor system comprises a chassis, wherein a digital signal processing single machine and an analog channel receiving-transmitting single machine are arranged in the chassis; the digital signal processing single machine comprises an FMC (FPGA Mezzanine Card) data acquisition daughter card and a signal processing mother board; the FMC data acquisition daughter card comprises an ADC (Analog-to-Digital Conversion) module and a DAC (Digital-to-Analog Conversion) module; the signal processing mother board comprises an FPGA (Field Programmable Gate Array), a DSP (Digital Signal Processor) and an ARM (Advanced RISC Machine); the DSP communicates with the FPGA through a DFE interface according to a 204A / B communication protocol; external interfaces of the digital signal processing single machine are two micro rectangular connectors; and an external interface of the analog channel receiving-transmitting single machine is an SMA-K adapter. Through adoption of the S-band receiving-transmitting integrated processor system, down conversion, amplification and filtering of forward S-band signals can be finished integrally; ADC, digital down conversion, dispreading, demodulation and decoding are performed on forward intermediate-frequency signals; backwardly-transmitted data are encoded and modulated; backward intermediate-frequency signals are simulated through DAC output; and up conversion and amplification are performed on backward intermediate-frequency signals, and S-band radio frequency signals are output.

The invention discloses an electric cochlea speech processor and processing method with signal compression in a wide dynamic range. The electric cochlea speech processing method comprises the following steps that: a processing unit performs pre-emphasis processing and frequency division processing on transmitted acoustic signals by a frequency division module, and processing results are combined into M channels; according to a comfortable threshold parameter or a perception threshold parameter measured in advance of the M channels of an electric cochlea implanted person, a compression unit calculates an acoustic signal intensity parameter corresponding to an electric stimulation perception threshold or an acoustic signal intensity parameter corresponding to a comfortable threshold by an acoustic-electric compression function; then by adopting the parameter as an inflection point, and according to a compression curve in the wide dynamic range enveloped by a frequency spectrum, the compression unit calculates sound intensity after compression of each channel; and finally, after wide-dynamic compression, output sound intensity is subjected to acoustic-electric stimulus compression and then is output. The electric cochlea speech processor enhances signal processing efficiency and improves individual speech recognition ability of the electric cochlea implanted person.

The invention discloses a signal processor of a Doppler weather radar. The signal processor comprises a signal processing unit, wherein the signal processing unit comprises a signal receiving module,a signal storage module, a signal analysis module, a filtering module, a signal processing module, a quality control module and a parameter configuration module. The signal processor solves the problem that the difficulty in research and development as well as simulation debugging of a signal processing algorithm is great, the improvement and function upgrading of the signal processing algorithm are difficult, a universal server is used as a hardware platform of the signal processing unit, the operation speed is fast and the expansibility is high, a software-based design is adopted, functionsof a radar system are enhanced or expanded through reconstruction and continuous improvement of software, and rapid diversification detection is achieved.

The invention discloses a magnetic field gathering assembly, a non-contact leakage current measuring device and a measuring method. The magnetic field gathering assembly comprises at least two magnetic field gathering devices which are concentrically arranged, longitudinal air gaps are formed in the magnetic field gathering devices, transverse air gaps are formed between every two adjacent magnetic field gathering devices, and the transverse air gaps are used for containing magnetic sensors. The magnetic field gathering assembly adopts a four-air-gap structure; the longitudinal air gap width of the magnetic field gathering devices is no longer limited by the size of the magnetic field sensors; due to the minimized longitudinal air gap width, the magnetic field intensity of the edges of thelongitudinal air gaps is remarkably improved; the magnetic field sensors located in the transverse air gaps measure two overlapped edge magnetic fields at the same time, the measured magnetic field intensity is far larger than the magnetic field intensity of a traditional single-air-gap structure, the signal-to-noise ratio is improved, then the leakage current with the effective value only ranging from several milliamperes to hundreds of milliamperes can be measured, and the precision requirement of electric power equipment for ground leakage current measurement is met.

The invention discloses an on-site alarm intelligent building fire monitoring system based on the RS485 bus. device, and a monitoring room computer connected to the microprocessor; the detection device is composed of a processing chip, a smoke sensor connected to the processing chip, a temperature sensor, and an audible and visual alarm circuit; the processing chip is connected to the conversion module connected. The present invention adopts the RS485 bus to transmit signals, which improves the accuracy and speed of signal transmission, and makes the present invention more networked and intelligent. The detection device of the present invention is provided with an audible and visual alarm circuit, which can send out an alarm when a fire breaks out on the floor, and the people in the floor pass through to evacuate urgently.

The invention discloses a real-time rendering method for a virtual auditory environment. According to the method, the initial information of the virtual auditory environment can be set, and a head trace tracker is used for detecting the dynamic spatial positions of six degrees of freedom of motion of the head of a listener in real time, and dynamically simulating sound sources, sound transmission, environment reflection, the radiation and binaural sound signal conversion of a receiver, and the like in real time according to the data. In the simulation of the binaural sound signal conversion, a method for realizing joint processing on a plurality of virtual sound sources in different directions and at difference distances by utilizing a shared filter is adopted, so that signal processing efficiency is improved. A binaural sound signal is subjected to earphone-ear canal transmission characteristic balancing, and then is fed to an earphone for replay, so that a realistic spatial auditory event or perception can be generated.

The invention discloses a Micro-LED optical information sensing and storage unit, a photonic integrated chip, an array and a preparation method. The information sensing and storage unit of the photonic integrated chip comprises a Micro-LED, a smooth layer, a ferroelectric semiconductor, a dielectric layer and a passivation layer which are sequentially aligned with one another and superposed from bottom to top; and the information sensing and storage unit also comprises a source electrode, a drain electrode and a grid electrode, wherein the source electrode and the drain electrode are respectively embedded into two sides of the bottom of the dielectric layer and are in contact with the ferroelectric semiconductor, and the grid electrode is embedded into the bottom of the passivation layer and is located at the middle position above the dielectric layer. According to the micro-LED optical information sensing and storage unit, the photonic integrated chip, the array and the preparation method of the invention, synchronous sensing and storage of optical information can be realized, the signal processing efficiency is improved, and the circuit structure is simplified. The micro-LED optical information sensing and storage unit has important application prospects in the fields of photon chips and image recognition in the future.

The invention relates to a sparse observation method for interference suppression of compressed sensing radar. According to the characteristics of compressed sensing radar, starting from the perspective of observation matrix design, using a structured observation matrix, firstly modulate and add phase modulation to each transmitted pulse of compressed sensing radar, thereby Effectively separate the real target echo and interference signal, and then suppress the interference signal while accumulating the target echo, and improve the signal-to-interference ratio; at the same time, the sparse sampling observation matrix is ​​used to further compress the interference suppression observation data, and further improve the compressed sensing The signal processing efficiency of the radar; then an optimization solution problem for interference suppression observation is proposed, and the efficiency of solving the optimization problem is improved by adding constraints; finally, by solving the sparse optimization problem, the compressed sensing radar under the background of interference is realized. The target parameters can be accurately estimated, so as to actively suppress the space interference signal, and improve the target detection performance of the compressed sensing radar under the interference background.

The invention discloses a multi-channel nuclear power equipment contact scanning device and its working method, and relates to the technical field of nuclear power plant control systems, including: receiving nuclear power equipment switch contact signals through a multi-channel receiving end; Perform non-operation, and carry out XOR preprocessing with the nuclear power equipment switch contact signal of the corresponding channel through the calculation unit; send the preprocessed nuclear power equipment switch contact signal to the first processing module and the second processing module, so that it can be processed according to The preprocessed nuclear power equipment switch contact signal and configuration information set obtain the contact scanning result; the first processing module judges the fault channel according to its own contact scanning result and the contact scanning result of the second processing module, and according to the preset The polling cycle obtains the order of the failure signals of the switch contacts of the faulty channel core electrical equipment. The contact signals of the field equipment of the nuclear power plant are collected through multiple channels and processed in parallel, realizing a scan with a total of more than 4,000 channels.

The invention relates to a driving-and-driven combined boosting type flexible lower limb exoskeleton. The driving-and-driven combined boosting type flexible lower limb exoskeleton comprises a foot (1), a shank (3), a thigh (5) and a back frame (7), and the shank (3) is rotatably connected with the foot (1) through an ankle joint (18). The driving-and-driven combined boosting type flexible lower limb exoskeleton is characterized in that the lower end of the shank (3) is connected with an ankle joint pressing plate (9), the ankle joint pressing plate (9) abuts against an ankle joint spring (2) for foot boosting, the ankle joint spring (2) is installed in a spring base (201), and the spring base (201) is fixedly connected with the foot (1); the upper end of the shank (3) is hinged to the lower end of the thigh (5) through a knee joint (19); the upper end of the thigh (5) is connected with the back frame (7) through a hip joint (6). The driving-and-driven combined boosting type flexible lower limb exoskeleton is simple in structure and convenient to control.

The invention discloses a signal processor of a Doppler weather radar. The signal processor comprises a signal processing unit, wherein the signal processing unit comprises a signal receiving module,a signal storage module, a signal analysis module, a filtering module, a signal processing module, a quality control module and a parameter configuration module. The signal processor solves the problem that the difficulty in research and development as well as simulation debugging of a signal processing algorithm is great, the improvement and function upgrading of the signal processing algorithm are difficult, a universal server is used as a hardware platform of the signal processing unit, the operation speed is fast and the expansibility is high, a software-based design is adopted, functionsof a radar system are enhanced or expanded through reconstruction and continuous improvement of software, and rapid diversification detection is achieved.

The invention discloses a method for judging and processing spaceborne SAR ionospheric dispersion effects, so as to realize high precision of spaceborne SAR data products and high efficiency of signal processing. Combined with the proposed decision method, the established processing flow includes: using the IRI model to obtain the TEC parameters, and combining the spaceborne SAR system parameters to calculate the characteristic parameters of the ionospheric dispersion effect, namely AIO, QPE and CPE; judging whether AIO, QPE and CPE are Exceed the respective threshold values, and obtain the corresponding decision flag bit; decide whether to perform various correction steps of the ionospheric dispersion effect according to the decision flag bit. By means of the present invention, an efficient processing flow for the correction of the ionospheric dispersion effect of the spaceborne SAR can be established.

The invention discloses a touch control system. The touch control system comprises an inductive touch panel, a first control module and a second control module, wherein the inductive touch panel comprises a plurality of induction channels, each induction channel comprises a plurality of conductor units which are mutually connected in series, and an induction contact is formed at the series connection of every two conductor units; the first control module is coupled to the induction channels and comprises a stabilized voltage control module and a ground terminal control module, one end of each induction channel is coupled to the stabilized voltage control module, and the other end of each induction channel is coupled to the ground terminal control module; the second control module is coupled to a plurality of induction contacts and is used for correspondingly receiving a plurality of induction signals from the induction contacts and calculating at least one touch control coordinate corresponding to the inductive touch panel according to the induction signals. The invention further discloses a control method of the touch control system. The signal processing efficiency of the touch control system is increased.

The invention discloses a big data transmission system based on a big dipper first generation communication system, comprising a receiving antenna, a sending antenna, a signal control panel and a data interface conversion module. The receiving antenna is in connection with the signal control panel; the sending antenna is in connection with the signal control panel; the signal control panel is in connection with the data interface conversion module; through a power divider, incoming signal energy is divided into a plurality of portions, and a plurality of corresponding base-band processing units perform treatment simultaneously, thereby improving signal processing efficiency; meanwhile the information to be transmitted is coded through the base-band processing units; through coordinating a plurality of base-band processing units, a plurality of emission signals are meanwhile processed, and are combined into a path of signals through a combiner for transmission, thereby realizing big data transmission instantaneity and high effectiveness.

The invention discloses a signal receiving and treating method in mobile communication and a system thereof. The signal receiving and treating method in mobile communication comprises the following steps of: receiving a signal; judging whether the received signal contains a valid signal activating region or not according to a preset judging conduction; if so, carrying out signal treatment of a receiving terminal on the signal in the signal activating region; or no-carrying out the signal treatment of the receiving terminal on the received signal. The signal receiving and treating method in mobile communication and the system thereof have the capabilities of improving the signal treating efficiency of the receiving terminal and reducing the waste of treating resources of the receiving terminal and the operation cost of a receiver.

The invention provides a design method of a separable two-dimensional FIR filter with sparse coefficients, which involves an iterative reweighting l 1 A sparse algorithm combining norm and greedy search technique. The present invention is different from the method in the past, has used sparse algorithm in the design of separable two-dimensional FIR filter for the first time, because the frequency response function of separable two-dimensional FIR filter is a non-convex problem, l 1 The norm method cannot be directly applied, so the present invention solves this problem by fixing some coefficients while maximizing the number of zero-valued coefficients in the remaining coefficients. The invention has the advantages of reducing the hardware complexity of the two-dimensional FIR filter, improving the signal processing efficiency, and integrating the trust region iterative gradient search technology in the design process, so that the coefficients of the filter are more accurate, and the obtained The filter performance index is more superior.