75results about How to "Solve the anti-interference" patented technology

The invention discloses a gait planning method for a biped robot based on deep reinforcement learning, and the method utilizes the stability and flexibility of human gait and combines deep reinforcement learning to effectively control the gait of the biped robot. The method includes the following steps: 1), establishing a passive biped robot model; 2), acquiring and processing human gait data andtarget gait data; 3), extracting the implicit features of the gait data of the biped robot and human gait data through using a noise reduction auto-encoder; 4), learning the gait characteristics of ahuman body through using deep reinforcement learning, and then planning the gait of the biped robot. The method combines deep reinforcement learning with human gait data to control the biped robot towalk as stable and compliant as a human.

The invention discloses an engine rotating speed measuring method and an engine rotating speed measuring device based on a DSP (digital signal processor). The method comprises the steps of acquiring engine vibration signals, exhaust sound signals or engine ignition voltage signals, carrying out AD conversion on the acquired signals, and sampling signal data subjected to AD conversion according to a preset sampling rate; carrying out amplitude limiting digital filtering and hamming function adding processing on the sampled data; carrying out fast Fourier transformation on the processed data for enabling time-domain sampling data to be converted into a frequency spectrum value in frequency domain, and calculating amplitude values of various frequency points; calculating a frequency value corresponding to an engine according to a frequency fundamental wave spacing method; obtaining the rotating speed of the engine according to the relationship between the rotating speed of the engine and the frequency value corresponding to the engine. Therefore, the rotating speed measuring precision and the anti-interference capability are improved, and the misjudgment rate is reduced.

The invention relates to an infrared signal transmitting method, an infrared signal transmitting device and a remote controller, belonging to the technical field of wireless transmission. The method comprises the following steps: generating a binary sequence corresponding to buttons when buttons are pressed for each button in a remote controller; decoding and modulating the binary sequence so as to obtain pulse train signals; and transmitting at least two pulse train signals in an infrared signal mode before the buttons are released. According to the method, the problems of weak anti-interference capability and low remote control success ratio of the remote controller in the technical scheme related to the prior art are solved; the possibility of receiving infrared signals completely is improved, and also the anti-interference capability and the remote control success ratio of the remote controller are improved.

The invention discloses a production method and an intelligent control system for floating hydroponic green vegetables. The production method is an integrated production method including the steps of matrix manufacturing, sowing, germination accelerating, seedling culture, rooting, transplanting, cultivating and harvesting. The intelligent control system comprises a touch screen tablet personal computer, a single-chip microcomputer controller, an environment monitoring module, an irritation module and buttons. The touch screen tablet personal computer conducts instruction input and state displaying. The single-chip microcomputer controller receives instructions and data and conducts corresponding processing and control. The environment monitoring module detects environment conditions with the help of sensors and transits the result to the single-chip microcomputer controller to be analyzed and processed. The irrigation module conducts irrigation and nutrient solution fertilization application on young seedlings at the seedling culture stage and the transplanting stage. The buttons are directly connected with the single-chip microcomputer controller and achieves manual control over the modules.

The invention discloses a device for testing the power frequency follow current intercepting capability of a lightning protection device. The device comprises a power frequency oscillation circuit, a high-voltage impact circuit, a mechanical linkage device, a sampling resistor and a voltage distributing device. The power frequency oscillation circuit comprises a power frequency inductor, a first sphere gap and a power frequency capacitor, wherein the power frequency inductor, the first sphere gap and the power frequency capacitor are sequentially connected. The high-voltage impact circuit comprises a waveform adjustor, a second sphere gap and an impact capacitor, wherein the waveform adjustor, the second sphere gap and the impact capacitor are sequentially connected. The power frequency inductor, the high-voltage impact circuit and the voltage distributing device of the power frequency oscillation circuit are connected with two connecting-in ends respectively in parallel, and one connecting-in end is further connected with the sampling resistor in series. The mechanical linkage device is further connected with the first sphere gap and the second sphere gap, the connecting-in ends are used for being connected with the lightning protection device to be tested. The mechanical linkage device is used for controlling the discharging moment of the power frequency oscillation circuit and the discharging moment of the high-voltage impact circuit by adjusting the distance between the first sphere gap and the second sphere gap and controlling the discharging moment of the high-voltage impact circuit at the set phase moment of the power frequency oscillation circuit. According to the scheme, the test success rate can be improved.

The invention relates to the flow detection field, and refers to a high temperature resistance digital two-wire system HART intelligent vortex flowmeter comprising a high temperature resistance vortex flow sensor, a first stage charge amplifier, a second stage charge amplifier, a first stage low pass filter, a second stage low pass filter, a voltage follower, a voltage-stabiliser tube, a digit power supply management circuit, a simulation power supply management circuit, an electric current loop and HART circuit, a digital isolation circuit, a one-chip microcomputer, a clock manager, a reset circuit, a power supply monitor, a keyboard, an LCD, and a temperature and pressure compensation unit. A signal conditioning circuit employs two-stage charge amplifiers and two-stage low pass filters to solve the problems that the high temperature resistance vortex flow sensor is low in sensitivity; two-path parallel power supplies respectively power up the simulation circuit and the digit circuit, thus solving the problems that the one-chip microcomputer is large in power consumption when doing FFT operation, yet the two-wire system HART intelligent vortex flowmeter requires the system consumed current is lower than 3.5mA. The high temperature resistance digital two-wire system HART intelligent vortex flowmeter can greatly improve measuring range ratio, measuring precision, and anti-interference capability.

The invention discloses a potable metal foreign body quick examination device and a method for positioning an in-vivo metal foreign body, which are characterized in that: a fully pre-charged rechargeable battery is arranged in a battery box in a power supply module; and after the check for ensuring that metal objects on a measurer and an experimenter are removed, a power supply switch is turned on to connect the power supply to enable the device to work. Input equipment selects the denoising degree and sensitivity parameter of a control module and adjusts a measurement output value, so that the system is in an optimal state; and a probe which consists of two parallelly arranged fluxgate sensors and a signal processing circuit thereof is attached to the body surface of the experimenter and slowly moves to reciprocally examine the metal foreign body for 3 to 5 times, and when an output displaying and alarming unit displays that the measurement output is changed obviously and gives an alarm, 2 to 3 points at which the measurement output changes most obviously are found out near a measurement region to serve as positioning points and the center of a circle of the selected positioning points is determined as the position of the metal foreign body.

The invention discloses a video monitoring method and the device thereof, wherein, the method comprises the following steps: recognizing the source outer contour of a target object in a monitoring video picture; reserving the source outer contour as a contour template; extracting the current outer contour of the target objet periodically; checking the reserved contour template; and completing the monitoring of the target object. By the processing, the current monitoring system can be utilized to perform the effective anti-theft monitoring to the target object.

The invention relates to an ultrahigh-frequency partial discharge active noise tracking and suppression measurement system and a working method thereof, in particular, an acquisition system of partial discharge ultrahigh-frequency signals and a working method of the acquisition system. At present, partial discharge ultrahigh-frequency signal acquisition cannot both have monitoring sensitivity and anti-interference ability. According to the technical scheme of the invention, the ultrahigh-frequency partial discharge active noise tracking and suppression measurement system includes a probe, a radio frequency power splitter of which the input end is connected with the output end of the probe, a detection circuit and a frequency mixing circuit of which the input ends are connected with the output ends of the radio frequency power splitter, an analog-to-digital conversion circuit of which the input ends are connected with the output ends of the detection circuit and the frequency mixing circuit, a processor connected with the analog-to-digital conversion circuit, and an input and output device which is connected with the processor, wherein the analog-to-digital conversion circuit is provided with a dual-path AD sampling chip so as to perform analog-to-digital conversion on the signals of the wave detection circuit and the frequency mixing circuit. According to the ultrahigh-frequency partial discharge active noise tracking and suppression measurement system provided by the technical schemes of the invention, broadband detection monitoring and narrowband mixed frequency monitoring are combined together; a local oscillator and a frequency mixer are adopted to actively track interference signals and suppress the interference signals, and therefore, a contradiction between sensitivity and anti-interference ability can be alleviated.

The present invention relates to a three-dimensional imaging photon counting system using N-fold pulse coding and a counting method. The system includes a total controller, a signal generator, a pulselaser, a transmission optical system, a receiving optical system, a Gm-APD array detector, and a TCSPC (time-correlated single photon counter) and a signal processing unit. According to the method ofthe present invention, the total controller controls the signal generator to generate N-fold pulse signals; the N-fold pulse signals are converted into pulse optical signals through the pulsed laser;thee pulse optical signals hit a target object through the transmission optical system; the energy of echo pulse signals reflected by the target object is collected by the receiving optical system; the echo pulse signals irradiate the Gm-APD array detector; signals generated by the detector pass through the TCSPC (time-correlated single photon counter); counted signals are transmitted to the signal processing unit for time correlation and solution; and a counting result is transmitted to the total control module, and the total control module outputs a result. With the counting method of the invention adopted, the problems of strength information loss and incapability of resisting environmental interference in the prior art can be solved.

The invention discloses an optical fiber coupling system and a coupling method, relates to the technical field of optical fiber coupling, and solves the problems that the effective working range is small, the coupling alignment precision is low, and the interference of atmospheric turbulence is serious. The optical fiber coupling system comprises a light spot tracking fast steering mirror, a tracking mirror driver, a beam splitter, an imaging lens group, a light spot position detector, an image processor, a nutation coupling fast steering mirror, a coupling mirror driver, a coupling lens group, a coupling optical fiber, a light energy detector and a controller, wherein the light spot position detector is placed on a focal plane of the imaging lens group, the end face of an optical fiber head of the coupling optical fiber is placed on a focal plane of the coupling lens group, and the optical axis of the optical fiber head is coaxial with the optical axis of the coupling lens group. According to the invention, optical fiber coupling with large effective view field, strong anti-interference capability and high coupling efficiency is realized. The optical fiber coupling efficiency canstill be kept under the influence of atmospheric turbulence, the overall communication quality of a laser communication link is guaranteed, and the application range is wide.

The invention provides an all-optical-fiber current transformer and a current measuring method thereof. The all-optical-fiber current transformer is mainly formed by three parts: a sensing unit, a signal processing unit, and a merging unit. The sensing unit employs the Faraday magneto-optic effect principle and used for inducing current of a measured conductor, and generating light intensity signals carrying data information of the Faraday rotation angle. The signal processing unit mainly completes input of optical singles of the sensing unit, analysis of the output optical signals, digitalization processing, and temperature compensation etc., and performs output according to a prescribed synchronous serial mode. The merging unit completes synchronization, switching or parallel logic of information of the signal processing unit, and transmits the information to an electrical measuring instrument and a relay protection device.

The invention discloses an ice accretion detection method and system based on temperature sequence similarity measurement, a terminal and application, and relates to the technical field of wing ice accretion detection. The method comprises the steps: collecting a wing surface temperature change sequence with the ice accumulation phenomenon, and obtaining a wing temperature change rate sequence; calculating the distance D1 between the wing surface temperature change sequence and the standard temperature change sequence when the wing surface is iced under the current meteorological condition and the distance D2 between the wing temperature change rate sequence and the standard temperature change rate sequence when the wing surface is iced through a dynamic time warping method; processing the distance D1 and the distance D2 according to an icing model to obtain an icing detection result, and giving an alarm in time when icing occurs. The ice accretion detection method provided by the invention has the advantages of fast response, strong anti-interference capability, easy implementation and the like; in combination with a non-contact infrared temperature sensor, non-contact ice accumulation detection can be achieved, the aerodynamic configuration of the wing is prevented from being affected, and the application prospect is good.

The invention provides a stress monitoring device. The stress monitoring device comprises a fiber bragg grating, an optical fiber and a strain body. A protective shell covering the sidewall is fixedly arranged on the sidewall of the strain body. A fiber outlet hole is formed in the protective shell. A protective baffle is arranged around the fiber outlet hole. In a layout space between the protective shell and the sidewall of the strain body, the first end of the optical fiber is fixed to the sidewall of the strain body, and the optical fiber is wound and fixed to the sidewall of the strain body according to a certain winding distance in the axial direction of the strain body. The fiber bragg grating is arranged on the optical fiber in the axial direction of the optical fiber. The second end of the optical fiber extends out of the protective shell through the fiber outlet hole and is connected with a wideband incident light source. A fiber bragg grating demodulation instrument is connected with the second end of the optical fiber through an optical coupler. The stress monitoring device can overcome the defects that an existing stress monitoring device is prone to electromagnetic interference, large in temperature excursion and poor in environmental adaptability. The invention further provides a manufacturing method.

The invention provides a frequency agility MTI radar speed measurement method, which utilizes double transmitting and receiving channels to simultaneously transmit and receive signals with different frequencies, then performs signal-level fusion on the signals of the two channels through signal processing so as to improve the detection performance, and meanwhile carries out speed calculation by utilizing signal phase information of the two receiving channels without additionally transmitting redundant waveforms for speed ambiguity calculation. According to the frequency agility MTI radar speedmeasurement method, simultaneous dual-frequency transmission is adopted, so that the probability that a reconnaissance receiver intercepts a radar transmitting signal is reduced; and meanwhile, narrowband aiming type interference can be effectively resisted by double-frequency reception; the defect of weak electronic countermeasure capability in an existing MTI radar is overcome, target detectionis realized by adopting dual-channel signal level fusion, velocity ambiguity resolution is realized without redundant waveforms, the defect of serious energy loss caused by transmitting the redundantwaveforms in the prior art is overcome, and the comprehensive detection performance of the target is effectively improved.

The invention relates to a data processing method based on a servo drive unit. The method comprises the following steps: a DSP chip in the servo drive unit receives and initializes sampling information from a host side; a virtual A/D module in the DSP chip samples input servo motor feedback data and control input data according to periodic interrupt generated by a timer inside the DSP chip, and sends the sampled data to the host side through a FIFO; and the host side processes a received data frame, and displays time-domain and frequency-domain waveforms and control adjustment parameters of servo motor operation. The method enables the servo drive unit to be debugged more conveniently, more flexibly and more efficiently; the method has the following advantages: acquired data is accurate, the data precision is high, algorithm data is directly acquired, the method is embedded into the servo drive unit, and the like; and the method further has the following advantages: a friendly graphical man-machine interaction interface is provided, internal data of the servo drive unit is displayed in real time, and any detail part of an image can be magnified without being limited by offset of a zero-point coordinate axis.

The invention discloses a grating-based obstacle avoidance system of a pilotless automobile. The system comprises a grating emitter, an image acquisition module, a grating processor, an automatic obstacle avoidance module and a driving control module, wherein the grating emitter is used for emitting a grating to an obstacle; the image acquisition module is used for acquiring a grating image emitted to the obstacle; the grating processor is used for processing the grating image acquired by the image acquisition module, measuring the distance value between pixels of the grating image, and judging the distance between each part of the obstacle and the grating emitter according to the proportion of the distance value and the actual distance; the automatic obstacle avoidance module is used for sending a corresponding obstacle avoidance instruction according to the distance between each part of the obstacle and the grating emitter; and the driving control module is used for controlling the pilotless automobile to avoid the obstacle according to the instruction of the automatic obstacle avoidance module. By adopting the system, the pilotless automobile can automatically avoid the obstacle, the avoidance manner is more diverse, and the driving route can be automatically adjusted to complete a stipulated driving task. The system is simple in structure and convenient to use, and has high practical value.

The invention belongs to the field of automobile electronic sensing detection and particularly discloses a nitrogen and oxygen sensor control system. The system comprises a cascade controller, a two-way fuzzy controller, and a nitrogen and oxygen sensor suitable for a main pump, a secondary pump and a measurement pump. The cascade controller is used for stabilizing Ip1 according to Vp0 and Vp1, the fuzzy controller is used for performing decoupling control on V1 and V2 and performing real-time control on Nernst voltages of the secondary pump and the measurement pump by V1 and V2 obtained by control, wherein Vp0, Vp1 is the pump voltage of the main pump and the secondary pump, Ip1 is the pump current of the secondary pump, and V1 and V2 are the Nernst voltages of the secondary pump and themeasurement pump. According to the system, the efficient decoupling control can be performed on a complex nitrogen and oxygen sensor, and the sensor can work in a stable state for a long time. The system also has the characteristics of high stability and high anti-interference ability.

The present invention discloses a method for carrying out wireless monitoring on a barn. The method comprises: communication link establishing; site signal detection; signal acquisition and processing; wireless remote transmission of the signal; information display, analysis and control command transmission; ultralimit parameter alarming; and site device control and management. According to the present invention, various grain parameters are collected by using the sensor nodes arranged in the barn and having different functions, the detected signal is real-timely transmitted to the control terminal through the GPRS module, the abnormal situation is predicted and alarmed, and the operation of the ventilation and grain protection equipment is automatically controlled according to the preset control policy, such that the grain security is ensured; and the method is simple, the use is easy, and the problems of high maintenance cost, poor system scalability and poor system mobility, poor interference resistance, easy transmission data losing and the like of the existing barn monitoring system are effectively solved.

The invention discloses a method for measuring the heart rate. The method comprises the following steps of: (1) acquiring heartbeat waveform data and reading the heartbeat waveform data at a first time interval, wherein at least one heartbeat occurs in the first time interval; (b) computing a threshold value according to heartbeat waveform data in at least two latest periods; (c) acquiring heartbeat waveform data in a next period, judging an R wave in a QRS wave group according to the threshold value, and recording the times of the R wave in the period; and (d), judging whether preset detection time is reached, if not, performing the step (b), and if so, counting the R wave times in the preset detection time for serving as heart rate output. The invention further provides a corresponding heart rate measuring system. In the method and the system, comprehensive judgment is made by using segmented self-learning, differences and amplitudes, so that the problems of poor anti-jamming capability, insufficient importance attached to the experience of doctors, computing complexity and/or poor instantaneity and the like are solved, recognition of the R wave can be realized, and the heart rate is further measured accurately.

The invention relates to a short-wave multi-channel parallel direct acquisition and receiving system. The system comprises a power supply unit, a radio-frequency signal processing unit and a digital signal processing unit, the power supply unit supplies power to the system; wherein the radio frequency signal processing unit comprises an input protection circuit, a 30MHz low-pass filter, an eight-path preselection multiplexer filter, an eight-path numerical control attenuator, an eight-path front high-linearity low-noise amplifier and a clock circuit which are connected in sequence; the digitalsignal processing unit comprises eight ADC sampling circuits, an FPGA circuit, a DSP circuit and an audio line output circuit which are connected in sequence, the eight ADC sampling circuits are connected with the eight front high-linearity low-noise amplifiers in a one-to-one correspondence mode, the DSP circuit is connected with a network interface, and the DSP circuit communicates with an upper computer. According to the invention, the advantage that a short-wave full-band signal direct acquisition and receiving system is completely wide-open can be fully utilized, and the problem of insufficient anti-interference performance can be solved.

The embodiment of the invention discloses a bill softness identification method which is used for solving the problems that the existing bill detection softness accuracy is low, the speed is low and the anti-interference performance is poor. The method provided by the embodiment of the invention comprises the steps of receiving bills, extracting and dividing the bills, so as to ensure that the bills enter a bill channel in a separated way, collecting an extracted single bill image and a corresponding bill background image, rotating the bills to ensure that the bills press a plurality of preset force sensors, obtaining effective force signals fedback by the force sensor, obtaining the oblique angle of the bills according to the single bill image and the corresponding bill background image, confirming the effective force sensor pressed by the bills according to the oblique angle, judging whether the effective force signals of the effective force sensor meet a preset softness condition or not, and judging the bills are softness bills if the effective force signals of the effective force sensor meet a preset softness condition. The embodiment of the invention further provides a bill softness identification device.

The invention relates to a 10kV high-voltage switch cabinet overheating risk early warning device and an early warning method thereof, and belongs to the technical field of high-temperature early warning. The early warning device is composed of a high-voltage switch cabinet, a temperature measuring element, a communication assembly, a central server, an upper computer, an early warning assembly and a monitoring assembly. The high-voltage switch cabinets are arranged in a transformer substation at intervals. The temperature measuring element is fixedly arranged on each high-voltage switch cabinet, the temperature measuring element is in wireless connection with the communication assembly, the communication assembly is connected with the central server through an Ethernet cable, the centralserver is connected with the upper computer through an Ethernet cable, the upper computer is electrically connected with the early warning assembly, and the central server is in wireless connection with the monitoring assembly. The 10kV high-voltage switch cabinet overheating risk early warning device and the early warning method thereof have the characteristics of timely early warning, high measurement accuracy and strong anti-interference capability, problems of untimely early warning, low measurement accuracy and weak anti-interference capability of the existing high-voltage switch cabinetare solved, and the high-temperature early warning requirement of a transformer substation is met.

The invention discloses a motor digital type protector which solves the problems of high-precision protection and anti-jamming property. The technical scheme of the invention aims to provide a motor digital type protector, and simultaneously solves the problems of current protection, open-phase protection and anti-jamming property. The motor protector is provided with a current effective value detecting circuit, a signal processing circuit and a trip circuit, and is characterized in that the current effective value detecting circuit is provided with a current effective value detecting circuit for separating frequency signals of current pulses.

The invention relates to a method for improving the anti-interference performance of an electrochemical transistor sensor. The electrochemical transistor sensor comprises a source electrode, a drain electrode and a grid electrode, wherein a channel of the electrochemical transistor sensor is arranged between the source electrode and the drain electrode. The electrochemical transistor sensor is characterized in that the channel is provided with a Nafion thin-film protective layer and/or a glycan thin-film protective layer, or the grid electrode is externally sheathed with a sand-core glass pipewith microporous ceramic at the lower end, and the channel or the grid electrode is separated to shield the response of the electrochemical transistor sensor on interfering substances. The optimization method of the electrochemical transistor sensor has the characteristic that the response of the interfering substances is shielded under the premise of no influence on the response of a device to substances to be detected.

The invention discloses an electronic device with a function of double-side touch. The electronic device comprises a double-side display, a first light guide plate, a second light guide plate and a controller; the first light guide plate is arranged on one side of the double-side display; the second light guide plate is arranged on the other side of the double-side display; a light source is arranged between the first light guide plate and the double-side display; a receiver is arranged between the second light guide plate and the double-side display; the controller generates a transmitting control command and a receiving control command; the transmitting control command is used for controlling the light source to emit light to the display face of the double-side display; the receiving control command is used for controlling the receiver to receive light transmitted by the light source.