90 results about "Function generator" patented technology

The invention belongs to the related field of on-line monitoring devices, and particularly relates to on-site inspection complete equipment and an on-site inspection method for on-line monitoring devices of large-scale oil-filled equipment such as a transformer and a high-voltage reactor, the on-site inspection complete equipment comprises an inspection host, and the inspection host integrates a function generator module, a controller module, a digital-to-analog converter, a power supply module and man-machine interaction equipment. The controller module controls the function generator modules, and each function generator module outputs various excitation signals with different amplitudes and different frequency parameters according to the requirements of the controller module. After various excitation signals are sent out by the function generator, digital quantity-analog quantity signal conversion is carried out through the digital-analog converter, the signals are converted into different level signals to be sent to the excitation sensor, and the function generator of the five types of signals is modularly designed and compactly arranged in the inspection host. The device can meet the on-site inspection of six different online monitoring devices, is high in on-site inspection efficiency, does not affect the operation of equipment, and is high in on-site operation safety.

The invention relates to a Rydberg atomic communication receiving system and method based on AT split peak value analysis, and belongs to the technical field of quantum communication. The system comprises a detection laser, a coupling laser, an AOM / EOM, a function generator, a high-frequency signal generator, a cesium atom gas chamber, a photoelectric detector, a lock-in amplifier, a data acquisition module and a microwave signal output module. The AOM / EOM modulates the frequency of the detection laser; the microwave signal output module generates an AM modulation microwave signal and transmits the AM modulation microwave signal to the cesium atom gas chamber, so that the target Rydberg state atoms generate an AT splitting effect to calibrate system parameters; the photoelectric detector and the lock-in amplifier obtain a first harmonic component based on the transmission light. During communication, the system is arranged in a microwave electric field received by communication, and the data acquisition and processing module outputs AM modulation microwave signals received by the recovered cesium atom gas chamber based on calibrated system parameters and phase locking. The method solves the problem of signal distortion existing in EIT-AT direct communication transmission and the problem of tedious operation of a heterodyne method.

The invention discloses an optical time domain reflectometer based on ring structure modulation and a working method thereof, and relates to the technical field of optics. The optical time domain reflectometer comprises a laser, an optical fiber coupler, a semiconductor optical amplifier, an acoustic optical modulator, an optical isolator, a delay optical fiber, an erbium-doped optical fiber amplifier, a dense wavelength division multiplexer, a circulator, a Raman laser, piezoelectric ceramics, an arbitrary function generator, an arbitrary waveform generator, a polarization controller, a photoelectric balance detector, a data acquisition card, a computer and the like. Multi-frequency modulation is carried out based on an annular structure, the multi-frequency modulation range is only limited by the bandwidth of a detector and the sampling rate of an acquisition card, a pulse sequence is generated through modulation of the optical annular structure, dependence on the bandwidth performance of a microwave signal source and a modulator is reduced, and the bandwidth is improved; and by injecting the Raman light, the sensing distance is also increased, the equipment cost is effectively controlled, and meanwhile, a new scheme is provided for time sequence pulse sequence modulation.

The invention relates to a message mapping-based generative implicit representation steganography method, which comprises the following steps of: representing multimedia data by using an implicit neural representation technology, and converting the multimedia data into uniform point cloud data for message embedding; a secret message needing to be embedded is expressed in a binary mode and then converted into noise data through mapping, the noise data are input into a function generator to be subjected to message embedding, a message extractor is used for extracting the noise data, and the secret-containing message is recovered through inverse mapping; the function generator and the message extractor are obtained through training of a training set; in a message embedding process, a noise space of the function generator applies a single-bit and multi-bit message mapping scheme to embed noise data; in a noise extraction process, a message extractor extracts noise data by setting a plurality of point convolution layers and a full connection layer. According to the method, multimedia data of different sizes can be received, the robustness is good, the message extraction accuracy reaches the baseline level, and the method also has the advantage in the quality of the generated secret-containing carrier.

Embodiments of the present invention provide a sensing apparatus. The sensing apparatus includes a biochip unit and a receptacle device. The biochip unit includes a reservoir configured to receive a predetermined amount of an analyte, a plurality of working electrodes configured to be in contact with the analyte, a reference electrode and a counter electrode configured to complete an electrical circuit with the plurality of working electrodes. The receptacle device includes a receptacle unit configured to be electrically and mechanically coupled to the biochip unit, a function generator electrically coupled to the receptacle unit, a memory unit configured to store machine-readable instructions, and a processor operably connected to the memory unit. The processor is enabled by the machine-readable instructions to determine a plurality of deduced values corresponding to a plurality of analyte parameters of the analyte from the plurality of observed values of the plurality of predetermined parameters.

The utility model relates to the technical field of integrated circuit testing, and particularly discloses an integrated circuit experiment testing device which comprises a shell. A microcontroller, and a digital oscilloscope, a function generator, a digital logic analyzer, a pattern generator, a virtual digital I / O interface, a front PCB panel and a plurality of test interfaces which are electrically connected with the microcontroller are arranged in the shell; the front end of the shell is provided with a voltage acquisition interface, a current acquisition interface, a display screen and a plurality of voltage output ports which are electrically connected with the front PCB panel, the bottom of the shell is provided with an air inlet, a cooling fan is arranged above the air inlet, and the middle part of the shell is provided with a middle air outlet. According to the utility model, a plurality of instruments and meters are integrated to carry out experimental testing, so that the device is convenient to operate and overhaul, smaller in size and small in occupied space, meets the requirement of carrying out rapid testing in a limited space, and is suitable for design, simulation, manufacturing and testing of integrated circuits and related experimental teaching and scientific research activities.

This invention relates to an image processing-based phase-sensitive optical time-domain reflectometer and signal demodulation method and system, comprising: a laser, an electro-optic modulator, an arbitrary function generator, a first circulator, a filter, a first erbium-doped fiber amplifier, a bandpass filter, a semiconductor optical amplifier, a second erbium-doped fiber amplifier, a second circulator, an optical fiber under test, a photodetector, and a data acquisition card. The method of this invention facilitates high-precision demodulation over a wide range of strain or temperature conditions with high spatial resolution. This method combines image block matching and image denoising. Image block matching utilizes multiple frequency and spatial location information, improving demodulation accuracy when strain or temperature changes are large and helping to expand the measurement range. The image denoising method denoises the matched function image, reducing random noise in the system and improving demodulation accuracy at high spatial resolution.

The invention discloses a phase coding optoelectronic oscillator with an adjustable duty ratio and an implementation method thereof, and relates to the technical field of photoelectricity. The optoelectronic oscillator comprises a laser, a Mach-Zehnder modulator, a single-mode fiber, a photoelectric detector, an electric amplifier, an electric band-pass filter and an electric power divider which are connected in sequence; a direct current port of the intensity modulator is connected with the function generator, one path of the electric power divider serves as output, and the other path is connected with a radio frequency port of the intensity modulator; the output voltage of the preset function generator jumps between the two linear bias points and the minimum bias point of the Mach-Zehnder modulator, so that the direct output of the phase-coded microwave signal with the adjustable duty ratio is realized. According to the invention, the coherence of the phase coding microwave signal is good, the phase noise is low, the duty ratio is adjustable, the coding flexibility is high, the structure is simple, and the equipment cost is low.

This invention proposes a random microwave pulse generation system and method based on an optoelectronic oscillator, belonging to the field of microwave photonic signal generation and processing technology. The system includes a laser, a polarization controller, a closed-loop optoelectronic oscillator (OEO) loop, a random fiber grating string, and a function generator; wherein the closed-loop optoelectronic oscillator (OEO) loop mainly consists of a Mach-Zehnder modulator, a circulator, an erbium-doped fiber amplifier, a photodetector, an electrical amplifier, and a directional coupler.

The invention discloses a multi-frequency point calibration test method and system for 0-10 Hz ultralow frequency magnetic field immunity. The method comprises the steps of system building, single frequency point reference calibration, test execution and exception handling. When the system is built, the hardware modules are connected according to a specific mode; in the calibration stage, references are established for frequency points of 2Hz, 4Hz, 6Hz and 8Hz; during testing, precise field intensity control and data recording are realized through combination of coarse adjustment and fine adjustment; and verifying the probe position when abnormity occurs. The system comprises an arbitrary function generator, a power amplifier, a radiation ring and a gauss meter, and parameters of each module are adaptive to a frequency band of 0-10Hz. The field intensity larger than or equal to 1000 A / m can be stably generated, the testing precision is improved, the 0-10 Hz frequency band standard testing blank is filled, and the device is suitable for electronic equipment testing in the fields of industrial automation, new energy automobiles and the like.

A plasma system includes a plasma apparatus comprising a plasma chamber and a substrate support disposed in the plasma chamber. The system includes an electromagnetic (EM) circuit block coupled to a radio frequency (RF) electrode. The EM circuit block includes a broadband RF waveform function generator, the broadband RF waveform having EM power distributed over a range of frequencies, and a broadband impedance matching network having an input coupled to an output of the broadband RF waveform function generator and an output coupled to a terminal of the RF electrode, an operating frequency range of the broadband impedance matching network including the range of frequencies. The system includes a controller programmed to adjust an input parameter of the EM circuit block.

The application provides a Fe3O4 nanoparticle microscopic imaging detection method based on left and right polarization modulation, belongs to the technical field of photothermal science and detection and signal processing, and solves the problems that current nanometer single particles are difficult to observe and physical and chemical characteristics are difficult to obtain, and specifically comprises the following steps: determining a sample to be detected and preparing a slide sample; starting a computer, a data acquisition card, a lock-in amplifier, a galvanometer controller and a function generator; starting a power supply of an excitation light and a detection light laser and a refrigerator; setting detection parameters, setting laser power / current parameters, setting modulation parameters, and scanning and detecting the sample to be detected; loading a magnetic field; reading signals from the data acquisition card by the computer to obtain a photothermal detection result image; changing different laser parameters and the size of the magnetic field, repeating the above steps, obtaining a circular dichroism and magnetic circular dichroism detection result, measuring a magnetization curve, and monitoring a single nanoparticle magnetic moment flipping process.

A method of laser-based high temperature mechanical property characterization comprising the steps of providing a mechanical test frame and chamber, loading a specimen in the mechanical test frame in the chamber, providing a laser, aligning the laser, sealing the chamber, evacuating 5 the chamber and optionally backfilling with a prescribed atmosphere, turning on the laser, applying mechanical loading to the specimen in the mechanical test frame, utilizing a load cell and a non-contact video extensometer, synchronizing the output of the load cell and non-contact video extensometer, and tracking the strain in the specimen. A device for laser-based high temperature mechanical property characterization comprising a vacuum chamber with a laser 10 transmissible window and viewing window, a vacuum pump, a uniaxial tensile system inside the vacuum chamber, a thermocouple inside the vacuum chamber, laser optics inside the vacuum chamber, a function generator, a laser source, an IR camera, and a video camera.

The invention relates to the technical field of electronic components, in particular to a diode full-automatic test system and a performance test method, and the system comprises a test management server, a programmable test resource array, a feeding and discharging and positioning module and a test station. The test management server is a central processing unit, carries test management software and is responsible for formulating a test process, scheduling and distributing test tasks, centrally storing and managing test data and generating a test report; the programmable test resource array is in communication connection with the test management server, and the programmable test resource array comprises a programmable direct current power supply, a programmable electronic load, a high-precision digital multimeter, a programmable function generator and a multiplexing switch matrix. According to the invention, qualitative leap of efficiency, precision and reliability is realized in production inspection, quality evaluation and sorting links of diodes.

A method includes obtaining a first input instance and a first class corresponding to the first input instance, from an input instance dataset. The method further includes calculating a probability distance score based on a set of probability values by a distance function generator to transform the first input instance. The method further includes processing the first input instance and the probability distance score by a counterfactuals generator to generate a counterfactual instance. The method further includes executing a machine learning model to process the counterfactual instance and assign a second class, different from the first class, to the counterfactual instance.

The present application discloses a dark-field confocal microscopy measurement device and method based on time-varying fractional-order vortex demodulation, relating to the field of confocal microscopy measurement technology. The device comprises a time-varying modulated illumination module, an optical scanning module, a signal acquisition and demodulation module, a function generator and a sample stage. The function generator is respectively connected to the time-varying modulated illumination module and the signal acquisition and demodulation module to provide reference signals to the time-varying modulated illumination module and the signal acquisition and demodulation module respectively. The sample stage is used to place a sample to be measured. The time-varying modulated illumination module is used to emit fractional-order vortex light to the optical scanning module. The optical scanning module is used to transmit the fractional-order vortex light to the sample to be measured in the sample stage and transmit the return light signal to the signal acquisition and demodulation module. The signal acquisition and demodulation module is used to collect the return light signal and perform dark-field confocal detection on the return light signal according to the reference signal to obtain measurement information of the sample to be measured. The present application can improve the sensitivity and accuracy of the measuring device.

The invention belongs to the technical field of current collection line monitoring, and relates to a current collection line on-line fault positioning method and system, and the method comprises the steps: obtaining a plurality of to-be-monitored lines and corresponding line monitoring points; obtaining a line body temperature value and a line environment temperature value of the to-be-monitored line; obtaining a line temperature fault coefficient and a line abnormal monitoring point; obtaining a line current value of the to-be-monitored line; obtaining a line current fault coefficient and a line abnormal monitoring point; obtaining the fault anomaly degree of the line anomaly monitoring point; monitoring point fault signals are obtained through a function generator; acquiring the signal transmission distance of the fault signal of the monitoring point; and obtaining a line abnormal monitoring point position. The position of the abnormal monitoring point of the line is obtained through the line body temperature value, the line environment temperature value, the line current value and the set position of the fault receiving point, and the problems that an existing current collection line is low in fault positioning accuracy and the fault degree is not known are solved.

The invention discloses a multi-cavity gas detection device and method, and relates to the technical field of gas detection.The device comprises a photoacoustic cell which comprises a plurality of coupled acoustic resonant cavities and is used for bearing to-be-detected gas; the multiband laser output unit is arranged on one side of the photoacoustic cell and is used for emitting a plurality of lasers with specific wavelengths; the sensors are used for detecting photoacoustic signals in the corresponding acoustic resonant cavities; and the function generator is used for controlling the waveform signal of the laser output by the multiband laser output unit. Through the multi-cavity coupling design, synchronous detection of decomposed multi-component gas is realized, and the equipment cost and the maintenance complexity are reduced; a sensor is combined with a photoacoustic effect, so that the signal intensity and the detection precision are remarkably improved; an innovative wavelength feedback control system effectively suppresses light source fluctuation and environmental noise interference, and long-term monitoring stability is ensured; rapid concentration inversion is realized, reliable data support is provided for fault early warning, and the technical effects of reducing cost and increasing efficiency are achieved on the whole.

The invention discloses a photon logic gate which comprises (1) electromagnetic waves; (2) lookup table electromagnetic waves which are used as carriers for transmitting data, data addresses and control signals of logic operation and are used for transmitting at least one of the data, the data addresses and the control signals; the carrier signal of the electromagnetic wave comprises at least one of millimeter wave, centimeter wave, sub-6GHz and optical fiber; carrier signals of electromagnetic waves are determined based on application scenarios of the electromagnetic waves, the lookup table is a table based on an internal memory (RAM), corresponding data or results can be quickly obtained through various corresponding truth tables in the lookup table, and an important function of the lookup table is to be used as a logic function generator and a logic function generator. Essentially, the logic function generator stores the content of a truth table, the truth table is obtained through a Boolean expression, the truth tables of various logic gates or combinational logic are filled into an internal memory RAM, and the internal memory RAM has the capability of performing operation according to the logic gates or combinational logic functions. Therefore, when a signal is input for logical operation, the operation that an address is input for table look-up, content corresponding to the address is found out and then output is carried out, and then complex logical operation is completed through repeated transmitting, receiving and processing. The method is a technology for processing information by using electromagnetic waves as a carrier, has the advantages of large bandwidth, low time delay, low power consumption and the like, and can exponentially improve the efficiency of logical operation.

The application discloses a kind of metal material rigidity measurement system and method based on intensity-modulated laser ultrasonic, and the measurement system includes: function generator, intensity-modulated laser, probe laser, lock-in amplifier and PC computer;The function generator is used to generate modulation signal and synchronization signal;Intensity-modulated laser is used to output modulation laser according to the modulation signal, and acts on the metal to be detected;The probe laser is used to detect the modulation ultrasonic signal generated by the metal to be detected;The lock-in amplifier is used to obtain the amplitude and phase information of modulation ultrasonic signal according to the modulation ultrasonic signal and synchronization signal;The PC computer is used to obtain the rigidity information of metal material according to the amplitude and phase information of modulation ultrasonic signal.The application is used to solve the destructive measurement problem of traditional method, and proposes the resonance response characteristic frequency of modulation ultrasonic to obtain the mechanical parameter of sample.

A signal processing system for adjusting an audio signal, the signal processing system configured to: receive an audio signal for adjustment at a signal input; at a function generator, receive a selection of a musical key and scale, the musical key and scale including musical notes, and generate an audio signal processing function, configured to adjust the amplitude of frequencies of an audio signal, the audio signal processing function being dependent on the selected musical key and scale; apply the generated audio signal processing function to the received audio signal to generate an adjusted audio signal; and, output the adjusted audio signal at a signal output.

The invention discloses a distributed multi-parameter sensing system and method combined with an optical transceiving integrated chip, and relates to the field of distributed optical fiber sensing, and the system comprises a temperature control optical transceiving assembly, an arbitrary waveform function generator, an upper computer, a multi-channel data acquisition instrument, an erbium-doped optical fiber amplifier, a circulator and a sensing optical fiber. The temperature control light transmitting-receiving assembly comprises a semiconductor temperature controller and a light transmitting-receiving integrated chip; the optical transceiver integrated chip comprises a tungsten copper substrate, a thin film circuit, an output single-mode fiber, a semiconductor amplifier chip, a semiconductor laser chip, an avalanche photoelectric detector chip, a photon lead waveguide structure and an input single-mode fiber. Through optical transceiver chip integration, a cooperative control structure and a related signal processing algorithm, distributed sensing with compact structure, multi-parameter synchronous decoupling and high precision coexistence is realized.

The application discloses a kind of reinforced leaching high indium-containing waste device and method, belong to the technical field of recycling valuable metal.The application solves the problem that high indium-containing waste is easy to sink bottom by changing the stirring system of leaching indium, comprising the following steps: I.high indium-containing waste is transported to chemical reactor, and hydrochloric acid is added according to liquid-solid ratio;II.water bath system is used to heat the chemical reactor, open the nonlinear stirring system, and output function to frequency converter through function generator, realize the control of nonlinear stirring system, while opening the air injection system;III.after leaching is completed, water bath system, nonlinear stirring system and air injection system are closed, and leaching solution is separated from leaching residue.The leaching rate of indium in the stirring system of the application can reach 92%-98%, the power range is 0.001w-0.00174w, and the energy consumption is reduced by 50%-65%.

The invention discloses a physical unimitated function generator. The physical unimitated function generator comprises a conductive pattern, an insulating layer, a plurality of wires and a through hole array, the conductive pattern is disposed on the substrate. The insulating layer is disposed on the substrate to cover the conductive pattern. A plurality of wires are disposed on the insulating layer. The via array is disposed in the insulating layer and includes a first via group and a plurality of second via groups. The first via group overlaps the conductive pattern and includes a plurality of first vias electrically connected to the conductive pattern. The plurality of second via groups are respectively overlapped with the plurality of leads and each includes a plurality of second vias electrically connected with the corresponding leads. The second through hole closest to the first through hole in at least one second through hole group in the plurality of second through hole groups comprises an external expansion part electrically connected with the first through hole.

The plasma system includes: a plasma apparatus including a plasma chamber, a pedestal configured to hold a substrate in the chamber, and a radio frequency (RF) electrode configured to excite a plasma in the chamber; an electromagnetic (EM) circuit block coupled to the RF electrode, the EM circuit block including: a function generator configured to output a wideband RF waveform, the waveform having EM power distributed over a frequency range; a wideband amplifier coupled to the output of the function generator, the wideband amplifier having an operating frequency range that includes the frequency range; a wideband impedance matching network having an input coupled to the output of the wideband amplifier and an output coupled to a terminal of the RF electrode, the wideband impedance matching network having an operating frequency range that includes the frequency range; and a controller configured to adjust input parameters of the EM circuit block.

The present application relates to quantum dot light emitting diode (QLED) device characterization technology, in particular to a kind of with quantum dot light emitting diode electroluminescence imaging method.The present application aims to study the relationship between light intensity and dynamic parameter distribution in QLED electroluminescence (EL) process, to guide the preparation optimization of QLED device.The present application successfully realizes the above function by combining function generator with traditional fluorescence imaging system.The innovation of prior art is that function generator is used to generate pulse voltage to excite QLED sample, and fluorescence imaging system is combined to detect the EL imaging of QLED, and the imaging result of EL dynamic parameter is obtained by analysis software fitting.Through the statistics of the spatial distribution of QLED EL dynamic parameter and luminous intensity, the key factors affecting luminous intensity can be identified, thereby effectively guiding the optimization preparation process of QLED device.

The invention discloses a multi-spatial-resolution low-frequency-response DAS system and a working method thereof, and relates to the technical field of distributed optical fiber sound wave sensing. The system comprises a narrow linewidth laser, an acoustic optical modulator, a semiconductor optical amplifier, an optical coupler, a first circulator, a second circulator, an arbitrary function generator, a first photoelectric detector, a second photoelectric detector, a fiber bragg grating, a data acquisition card and a computer. According to the invention, by adopting a multi-spatial resolution design, a direct detection mode and broadband AOM and SOA combined modulation, high-precision positioning and signal detection can be realized in an optical fiber sensing system; according to the invention, the complexity of the system is reduced, the signal quality is obviously improved, the stability and accuracy of low-frequency signal detection are ensured, and the system is particularly suitable for long-distance and high-precision monitoring application.

The invention discloses a membrane surface pollutant detection device based on an ultrasonic transmission signal and a detection method thereof, and relates to the technical field of membrane separation pollution monitoring, and the membrane surface pollutant detection device comprises an ultrasonic transmitting end and an ultrasonic receiving end which are arranged in a sewage pool and are respectively arranged at two sides of a membrane; the function generator is connected with the ultrasonic transmitting end; the oscilloscope is used for connecting the ultrasonic receiving end with the data processing platform; according to the characteristics of high frequency and short wavelength of ultrasonic waves and the characteristics of higher speed per hour and farther distance when the ultrasonic waves spread in water, the detection device applies the ultrasonic waves to the aspect of membrane surface pollutant detection, so that the detection device can realize lossless and non-contact detection on a membrane, and the detection device also can establish a mapping relation between real-time data and a membrane pollution state, so that the detection accuracy is improved. The detailed condition of membrane pollution can be quickly determined when membrane data is obtained in an ultrasonic transmission mode in the future, and a treatment strategy can be quickly adjusted according to the detailed condition.

The application discloses a kind of gas photoacoustic spectroscopy detection systems with temperature compensation and its detection method, belong to gas detection technical field.The detection system provided by the application includes data processing and acquisition module, double-frequency resonant photoacoustic cell, laser and function generator and the like structure.Two resonant cavities are in the double-frequency resonant photoacoustic cell, two kinds of modulation frequency are generated using function generator to carry out double-frequency modulation to laser, and modulation frequency is set on the two sides of the resonant frequency of two resonant cavities simultaneously.When temperature changes, the resonant frequency drift of two resonant cavities causes photoacoustic signal to present opposite change trend on the two sides of non-resonant frequency, and the drift caused by temperature is offset by superimposing two photoacoustic signals, solve the problem that the photoacoustic signal of traditional photoacoustic cell fluctuates with temperature, significantly improve the stability and signal-to-noise ratio of detection system, greatly expand the application range of photoacoustic spectroscopy technology in the field of gas detection technology under extreme temperature conditions.

The present invention discloses an adjustable manipulation and precision screening device for particulate matter based on a vibration structure, comprising: a container, an angle-tilted platform, a vibration plate, a blocking plate, a power amplifier, and a function generator. At least two types of particles are placed on the side of the vibration plate away from the angle-tilted platform, and the sizes of any two particles are different. By setting the vibration plate to be tilted relative to the ground, the particles are affected by the gravity component. By adjusting the preset frequency of the sinusoidal signal generated by the function generator, the sound field near the vibration plate can be changed, and the force conditions of particles of different sizes in the sound field are also different. That is, by adjusting the preset frequency of the sinusoidal signal generated by the function generator or the tilt angle of the vibration plate, the combined effect of gravity and the sound field is changed, thereby achieving separation of particles of different sizes; and by changing the sound field near the vibration plate, the stationary position of smaller-sized particles on the vibration plate can also be changed, thereby achieving regulation of the particles.