246 results about "Square wave" patented technology

The invention discloses a tower grounding grid multi-frequency composite wave electric field imaging and soil environment medium diagnosis method, which comprises the following steps of: generating a composite excitation signal through superposition of a low-frequency sine wave and a high-frequency CHIRP square wave, and collecting multi-dimensional data such as voltage / current response, soil temperature and humidity, electric field intensity and the like in combination with a distributed sensor array; separating signal features by using wavelet transform and extracting impedance information of a target frequency point; a multi-grid homotopy algorithm is adopted to realize grounding grid three-dimensional resistivity distribution reconstruction, corrosion spots and abnormal areas are marked, and high-precision positioning of underground conductors is completed through UWB radar or a capacitance detector; meanwhile, based on the information entropy maximization optimization frequency band combination, the grounding grid state is comprehensively evaluated in combination with a multi-parameter fusion model. The method has the non-contact patrol capability, the unmanned aerial vehicle carries equipment to scan the grounding grid, the detection efficiency and convenience are remarkably improved, and an efficient and accurate solution is provided for guaranteeing safe operation of the power grid.

The embodiment of the invention provides a coating layer wall thickness pulse eddy current detection method and system based on multiple eddy current rings, and the method comprises the steps: applying a square wave excitation signal to an excitation coil, and carrying out the induction in a structural member with a coating layer to generate eddy current; collecting a voltage signal generated by induction of an attenuation magnetic field generated by the eddy current by using a receiving coil, wherein the attenuation process of the voltage signal comprises three stages; identifying a power function interval of the second stage to determine the starting time of the third stage; taking the starting time of the third stage as a reference, and selecting a preset thickness quantitative time interval in the third stage; calculating a first-order derivative of the voltage signal to time under a single logarithmic coordinate system in the thickness quantitative time interval to obtain a slope; according to the quantitative relation between the slope and the wall thickness of the structural part with the coating layer, the wall thickness value of the structural part with the coating layer is obtained through calculation.

The invention relates to a magnetotelluric noise suppression method based on ResAtt-CAE, and the method comprises the steps: generating a noise-free signal, adding a noise type into the noise-free signal to construct a noisy signal, and enabling the noisy signal to be matched with the corresponding noise-free signal to form a training set and a test set; designing a ResAtt-CAE model architecture, and realizing cross-level feature fusion by adopting a symmetric structure and jump connection; the ResAtt-CAE model architecture is trained and optimized through the training set and the test set, and the magnetotelluric noise is suppressed through the optimized ResAtt-CAE model architecture. The method is high in noise suppression capability: ResAtt-CAE captures cross-time scale signal features through multi-scale residual learning, enhances effective signal weights in combination with a time domain attention mechanism, and has a remarkable suppression effect on common magnetotelluric noise (square waves, harmonic waves, pulses, triangular waves and the like).

The invention discloses a permanent magnet synchronous motor full-speed-domain position-sensorless hybrid control method and a permanent magnet synchronous motor full-speed-domain position-sensorless hybrid control system, and the permanent magnet synchronous motor full-speed-domain position-sensorless hybrid control method is constructed by taking a permanent magnet synchronous motor nonlinear dynamic system model as a starting point. A hybrid control method combining high-frequency pulsating square wave signal injection under a linear dynamic system model, a rotor polarity judgment and rotor initial position estimation algorithm and an unscented Kalman filtering extension algorithm in an additive noise form under a nonlinear discrete dynamic system model is adopted; and obtaining the optimal estimation observation value of the system state variable in the static, low-speed, medium-speed and high-speed full-speed domain range under the condition that the permanent magnet synchronous motor is not provided with a mechanical position sensor. The optimal estimation observation value is used for compensating and feeding back a permanent magnet synchronous motor drive control system adjusting strategy, disturbance of load torque is improved, the noise amount and disturbance amount introduced by three-phase current measurement are eliminated, and efficient and accurate control operation of the permanent magnet synchronous motor is achieved.

The invention discloses a super-flat wire common-winding motor and a design method, and belongs to the technical field of motor design and manufacturing. The invention discloses an equal-pole common-winding axial magnetic flux motor and a design method, the equal-pole common-winding axial magnetic flux motor comprises a motor winding, a stator, a rotor, a casing and the like, and is characterized in that the number of magnetic poles of the stator and the number of magnetic poles of the rotor are equal, all the magnetic poles of the stator or the rotor on the same disc are excited through the same annular coil winding, and the winding can be a conventional round wire, a flat wire or a super-flat wire; alternatively, two or more concentric circle winding units, such as an outer ring winding unit and an inner ring winding unit, can be arranged on the same disc, radially adjacent iron cores can be shared or can also be independently arranged, meanwhile, the radial size of the shared iron core can be wider in consideration of the magnetic saturation problem, or the radial size of the shared iron core can be smaller in consideration of the magnetic saturation problem. The radial sizes of the iron core and the winding in the small-diameter area can be larger; the working principle can be a reluctance type, a switch reluctance type, a permanent magnet synchronous type, a direct-current motor type or an alternating-current motor type; the direct current motor can be a commutator or a plane commutator; or a brushless control scheme; the alternating current motor can be square wave, sine wave or other waveform; the phase difference of the three-phase alternating current can be 120 degrees; or two-phase or four-phase alternating current or other phase difference current with the phase difference of 90 degrees.

The invention discloses a thermal management system based on double-layer phase change and air cooling cooperative heat dissipation. The system comprises a battery module, a first-stage phase change layer, a second-stage phase change layer, a binding post, a supporting plate, a sleeve and an air cooling channel. The double-layer phase-change cooling device is filled with two composite phase-change materials with high heat conductivity coefficients, and the composite phase-change materials are distributed in the radial direction, so that heat generated by the battery can be quickly absorbed, and the temperature in the battery module is kept uniform. And when the power battery module operates for a preset time length, the air cooling device is automatically started, and part of heat absorbed by the phase change device is dissipated to the environment. The air cooling system adopts a square wave type air supply strategy, that is, intermittent cooling airflow is provided by periodically starting and stopping a fan. By combining the double-layer phase change cooling and air cooling technology, the problems of non-uniform internal temperature distribution and local overheating of the battery module are effectively improved, the applicable working condition range of the battery module is expanded, and the stability and reliability of the system are improved.

The application discloses a kind of continuous high-voltage pulse electric field processing berry functional active ingredient reinforced extraction method.The method comprises the following steps: after the cooling device is cooled to reach the set temperature by the processing chamber device, set high-voltage pulse power output parameter, high-voltage pulse power generates bipolar symmetric square wave, set pulse electric field parameter, the distance of two titanium alloy electrodes is 100mm, the pretreated berry material is transported to the processing chamber body, and the high-voltage pulse electric field processing is carried out on the berry material, to obtain the berry extract containing active ingredient.The method proposed in the application uses continuous round square corrosion-resistant pulse electric field processing chamber, the overall structure is convenient to assemble and process, the processing chamber can be increased according to actual needs, and synchronous cooling can be realized at the same time, the low-temperature extraction and active protection of functional active ingredient are realized while the electrode is protected.

The invention discloses an insulation resistance measurement method, a measurement module and an anti-reverse power transmission isolation device, and relates to the field of operation and maintenance of distribution lines, and the key points of the technical scheme are as follows: a control voltage signal is generated according to the voltage demand of the insulation resistance of a test line sent by a user, and a PWM square wave signal with a duty ratio is generated according to the control voltage signal; performing high-frequency voltage transformation and voltage doubling rectification on the PWM square wave signal to obtain a direct-current voltage; calculating a current average value of the measurement loop when each resistance measurement gear is switched; presetting a current coefficient of each resistance measurement gear and weight coefficients of two adjacent resistance measurement gears; and when the current average value is greater than or equal to the product of the current coefficient and the weight coefficient, calculating the insulation resistance value of the measured circuit according to the current average value, the direct-current voltage and the resistance value corresponding to the resistance measurement gear.

The invention discloses a high-precision BUCK converter with variable time-constant virtual ripple compensation, and relates to the technical field of circuits, a control logic and driving module drives a high-side and low-side switch group according to a control voltage so as to convert an input voltage into a square wave voltage of a switch node, and forwards the control voltage; the LC filter is used for filtering the square wave voltage and outputting steady-state output voltage; the variable time constant ripple injection circuit generates a fixed ripple voltage by extracting an average voltage value of the square wave voltage, and adjusts the size of a time constant by controlling the voltage to generate an alternating current ripple voltage based on the square wave voltage to generate an alternating current compensation ripple voltage; the feedback resistor group divides the output voltage to generate feedback voltage; and the loop comparator compares a superposed voltage obtained by superposing the alternating current compensation ripple voltage and the feedback voltage with a reference voltage to generate a control voltage, so that the high-precision BUCK converter which is simple in structure, high in dynamic response speed and high in steady-state precision is provided.

The invention discloses a non-differential disc type equal-pole common-winding high-power-density motor and a design method, and belongs to the technical field of design and manufacturing of motors and new energy automobiles. The invention discloses a split-disc type high-power density motor and a design method, a double-disc or multi-disc structure is adopted, direct current or alternating current or single-phase alternating current is subjected to physical space nominal phase splitting to complete continuous circumferential rotation or linear motion of the motor, and the specific implementation scheme can be directed at direct current brush motors, direct current brushless motors, direct current brushless motors, direct current brushless motors, direct current brushless motors, direct current brushless motors and direct current brushless motors. Due to the fact that a multi-disc complementary effect is achieved, the number of pole pairs of a rotor and a stator can be equal, the number density of interaction force points of the stator and the rotor in a unit space can be increased, the electromagnetic torque or magnetic resistance torque density can be increased, and square waves can be adopted to replace sine wave currents. The negative torque can be effectively eliminated by timely performing transient outage on the square wave commutation interlaced area, the motor power density can be greatly improved, and the technical scheme is also suitable for the field of generators.

The invention belongs to the technical field of water environment detection, and particularly relates to a heavy metal concentration and water body flow velocity synchronous detection method for a dispersed drain outlet, which is used for synchronously detecting the heavy metal cadmium concentration and the water body flow velocity. The core of the method comprises a three-electrode sensing system consisting of a working electrode coated with a tungsten oxide film, a reference electrode and a counter electrode, and is assisted by an electrochemical workstation, a peristaltic pump, a flow cell and a signal processing module. The cadmium concentration is accurately measured through the square wave anodic stripping voltammetry, the flow velocity is synchronously detected through the open circuit potentiometry, dual-function detection is achieved through integration of the square wave anodic stripping voltammetry and the open circuit potentiometry, synchronous in-situ detection of the cadmium concentration and the water body flow velocity is achieved, and errors caused by measurement position differences are effectively eliminated. The result shows that the cadmium concentration and the dissolution peak current are in a linear relationship, and the water flow velocity logarithm and the open-circuit potential are in a linear relationship. The method designed by the invention is suitable for scattered and small sewage draining exit scenes, and effectively solves the problems of time consumption and equipment redundancy of traditional step-by-step detection. In an actual water sample test, the cadmium recovery rate is 80%-120%, the flow velocity measurement RSD is smaller than or equal to 5.0%, high reproducibility, stability and anti-interference performance are achieved, technical support is provided for real-time online evaluation of the total heavy metal emission amount, and the method has remarkable environmental monitoring application potential.

The invention relates to a brushless direct current motor simulator system and method. The brushless direct current motor simulator system comprises a motor simulator unit and an energy feedback unit. In the motor simulator unit, a motor resolving model calculates and outputs three-phase current as instruction current based on an input line voltage and a load torque instruction; the motor simulator unit controller takes an interface input side phase current as a tracking current and adopts a current tracking control strategy based on dynamic current deviation compensation to obtain an instruction voltage so as to drive and control a motor simulation power converter; in the energy feedback unit, a phase-locked loop obtains a power grid phase angle based on alternating current side voltage and current; and the energy feedback unit controller generates instruction voltage by adopting a fixed direct current side voltage control strategy based on power grid voltage orientation so as to drive and control the energy feedback power converter. Compared with the prior art, the square wave current and the trapezoidal wave back electromotive force of the brushless direct current motor and the external port characteristics of the brushless direct current motor under normal operation and fault working conditions can be accurately simulated.

This invention relates to a parking braking method and system for maglev trains. The method includes: when the maglev train's speed is at the electro-hydraulic conversion speed point, determining the stage operation sequence according to a corresponding relationship; passing the electro-hydraulic conversion speed point by successively decreasing the stage operation sequence; then acquiring the current state information of the maglev train from the ATO in real time; determining the target deceleration value based on the current state information; determining the stage ratio according to the corresponding relationship and the target deceleration value; applying the stage ratio to the maglev train in a periodic square wave form until the target deceleration value is reached; if the distance between the maglev train and the parking point is a first predetermined distance, then re-determining the target deceleration value; otherwise, when the distance between the maglev train and the parking point is a second predetermined distance, gradually increasing the stage to achieve a fixed-point stop. This invention enables precise stopping of maglev trains under hydraulic braking, ensuring parking comfort and improving the passenger experience.

This invention provides a method and system for controlling the delay time of electronic detonators, comprising: configuring delay values ​​for each electronic detonator via an initiator; sending delay time calibration commands to all electronic detonators and calculating the total duration of the reference square wave of the delay time calibration commands to obtain T0; calculating T1 based on T0; upon receiving the delay initiation command, the electronic detonator calculates and writes the value to a delay timer based on T1, and decrements the timer; after the delay timer of the electronic detonator reaches zero, writing the value of T1mod div to the delay timer and decrementing the timer; and detonating the electronic detonator after the delay timer reaches zero. This invention uses a frequency-division clock to compensate for the delay time error caused by the delay, thus solving the problem of amplified delay time error caused by using only a frequency-division clock.

To provide a system and method for maintaining the freshness of fish and shellfish or derivatives thereof, which can maintain the freshness of caught and dead fish and shellfish or derivatives thereof such as sashimi by a simple method, and further prevent the disposal of the fish and shellfish or derivatives thereof. [Solution] The freshness preservation system for seafood or seafood derivatives comprises at least one coil (30) with 10 to 20 turns, and an AC current supply device (40) for supplying a square wave AC current of 100 mA to 3 A to the coil, which repeats a linear increase and decrease in frequency 2 to 5 times per second in the frequency range of 4.5 kHz to 8 kHz. The freshness of the seafood or seafood derivatives is maintained by keeping the coil and the seafood or seafood derivatives close to each other or by bringing them close to each other while passing the AC current through the coil.

The utility model provides a high-temperature-resistant sinusoidal signal source filter circuit, which comprises a high-stability oscillation source module, the high-stability oscillation source module is composed of a crystal oscillator Y1 and other elements, the frequency stability of an oscillation source is ensured, the output frequency of a sinusoidal signal source can be changed by changing the frequency of the crystal oscillator, an inverter U1B shapes and outputs oscillation source signals, and the signal quality is further ensured. The power supply filtering module effectively eliminates circuit noise and interference, the high-stability voltage source module supplies power to the oscillation source circuit through a resistor R1, a voltage stabilizing diode D1 and a capacitor C5, the temperature stability of the oscillation source circuit is good due to the characteristics of the voltage stabilizing diode D1, and it is guaranteed that the circuit works stably under different conditions. The signal amplitude adjusting module can flexibly change the output amplitude of the sinusoidal signal source, the active band-pass filtering module can accurately convert square wave signals output by the oscillation source into sine wave signals, parameter setting is reasonable, and the characteristics of quality factor Q, gain G, center frequency F and the like enable the signal processing effect to be good. And parameters of the band-pass filter are matched with parameters of the oscillating source during debugging, so that the circuit is stable and reliable in overall performance, and is suitable for high-temperature environments and other scenes with high signal quality requirements.

The application provides a stress detection system and method based on active and passive dual modes, and relates to the technical field of stress detection.The system comprises a stress sensor and a data processing module in communication connection.The stress sensor comprises a first coil assembly, a second coil assembly and a three-axis magnetic sensor.The first coil assembly is configured to apply a square wave current to the first coil assembly by an excitation source to generate an ACSM effect.The data processing module is configured to collect a voltage signal and a phase signal of the second coil assembly under the ACSM effect, collect a magnetic field signal of the three-axis magnetic sensor, perform feature extraction on the voltage signal, the phase signal and the magnetic field signal to obtain feature data, and input the feature data into a joint feature decoupling mathematical model to determine a pipeline stress value of a to-be-detected pipeline, so as to solve the problems that the current stress sensor has a large error when detecting in a low stress area, and the detection result has low accuracy due to environmental magnetic field interference.

The invention provides a repair circuit, a display panel and a display device. The repairing circuit is used for repairing abnormal scanning signals in the display panel. The repair circuit comprises a shaping module and an inverting module. The shaping module comprises a pull-up unit which comprises a first control end and a second control end; and the pull-down unit comprises a third control end and a fourth control end. The first control end and the third control end are coupled to a signal to be repaired, the second control end and the fourth control end are coupled to a corresponding clock signal, and the output ends of the pull-up unit and the pull-down unit are coupled to a first output node and used for performing NAND logical operation on the signal to be repaired and the corresponding clock signal and outputting a shaping signal in a square wave form. The inverting module is coupled to the first output node and is used for performing inverting processing on the shaping signal and outputting a repairing signal at a second output node. The repairing circuit can effectively repair abnormal grid signals in the display panel, and the product yield is improved.

The application discloses a control device for a lamp, the lamp, a control method of the lamp and a lamp system. The control device comprises a first voltage comparison module, a command input module and a first control module. The first voltage comparison module is used for comparing an alternating current input voltage with a preset voltage and outputting a corresponding first digital signal. The command input module is used for inputting a light control command. The first control module is used for receiving a square wave signal and the light control command, and controlling whether a switch of an alternating current input into the lamp is turned on or not according to the square wave signal and the light control command. The first end and the second end of the first control module are connected with the first voltage comparison module and the command input module respectively, and the third end of the first control module is connected with an input end of a switch module.

The embodiment of the invention provides a method and system for detecting the position of a weld joint of a pipeline with a coating layer based on the attenuation characteristic of a magnetic field, and the method comprises the steps: applying pulsed eddy current excitation to the pipeline with the coating layer, and employing a square wave or step wave signal; a plurality of magnetic field sensors are arranged along the circumference of the pipeline and receive voltage signals which are inducted by the pulsed eddy current in the pipeline and contain secondary magnetic field decay signals, and the magnetic field sensors are coils or magnetic sensors; measuring the magnetic field decay rate of the voltage signal received by each magnetic field sensor, wherein the magnetic field decay rate is represented by the attenuation slope of the secondary magnetic field decay signal; superimposing the decay rate slope values of the plurality of magnetic field sensors in the later stage of magnetic field decay to obtain a superimposed decay rate slope value; and based on comparison of the superimposed decay rate slope value and a preset threshold value, the existence and the position of the welding seam are judged, and the preset threshold value is set based on the decay rate slope value of the welding-seam-free area.

This invention discloses a magnetotelluric denoising method and system based on a physics-driven and conditional diffusion model, belonging to the field of electromagnetic signal processing technology. This method integrates the advantages of neural networks and the physical characteristics of magnetotelluric signals, and proposes a physics-driven synthesis strategy based on statistical priors of measured source data and a curriculum-based dynamic physics-driven noise addition strategy based on training progress factors. Addressing the scarcity of high-quality, clean samples, a clean background field that highly approximates real physical characteristics is synthesized using a parametric mathematical model. The introduction of curriculum-based dynamic physics-driven noise addition (such as noise floor annealing, square wave incrementing, and morphological clustering pulses) accurately simulates natural background degradation and complex human interference, enabling the model to adapt to extremely complex time-frequency characteristics under different geological structural backgrounds. This completely overcomes the domain shift problem caused by static Gaussian white noise training, constructs a richer sample library, and lays the foundation for accurate denoising of conditional diffusion models.

The application discloses a method for testing response time of a mini / micro LED direct display screen, which can avoid the influence of subjective evaluation of human visual perception on the response time, and provides a means for high-precision testing of the response time of the direct display screen through quantitative evaluation method. The method comprises the following steps: (1) a power supply inputs a stable voltage to the direct display screen, the direct display screen is lighted when a square wave driving voltage is input, light enters a microscope lens and converges on a target surface of a high-speed photoelectric detector, a response voltage signal is generated after the target surface is irradiated by the light, the voltage signal is filtered by a high-frequency filter to suppress high-frequency noise, and the voltage signal is connected to an oscilloscope through a BNC line; (2) the power supply is driven and controlled to realize different refresh rates; and step (1) is repeated to realize the response time test of the direct display screen under different refresh rates; and (3) different colors are realized by controlling a signal of the driving power supply; and step (1) is repeated to realize the response time test of the direct display screen under different colors.

The invention discloses a non-Newtonian fluid-based particle and biomolecule stepping separation method and device. Through microstructure arrangement of the non-Newtonian fluid, particles and biomolecules which cause different shear rates have blocking and passing characteristics, molecules with different volumes and different charge quantities are separated under the action of a square wave electric field, or molecules with different volumes and different charge quantities are separated under the action of a uniform gradient square wave magnetic field. The invention relates to a method for separating particles with different ferromagnetism or biomolecules combined with magnetic microbeads. Comprising a non-Newtonian fluid and a carrier thereof, a square wave electric field for providing power and a corresponding electrode or a magnetic field generator, and a support carrier for accommodating particles and biomolecules. After the particles and the biomolecules are separated in the square wave electric field for a period of time, the electric field intensity is changed, the second type of particles or biomolecules are separated, and the electric field intensity is sequentially switched according to the number of components to be separated, so that the separation purpose is achieved.

A nonaqueous electrolyte rechargeable battery includes an electrode body, a nonaqueous electrolyte, and a rectangular box-shaped battery case accommodating the electrode body and the nonaqueous electrolyte. The electrode body includes a positive electrode including a positive base and a positive composite material layer, a negative electrode including a negative base and a negative composite material layer, and a porous resin separator disposed therebetween. The electrode body has a low profile when the positive electrode, the negative electrode, and the separator are laminated and rolled. When spring constant of the nonaqueous electrolyte rechargeable battery with a load of 316 to 210 N / cm2 and 95 to 74 N / cm2 is respectively referred to as spring constant H and spring constant L, the ratio L / H is 0.34 or greater and 0.41 or less. A resistance increase rate between before and after a square wave test is less than or equal to 1.17.

The invention discloses a permanent magnet synchronous motor starting control method based on high-frequency square wave injection. A bus voltage threshold value is set; during initial starting, high-frequency square waves are injected into the d axis, and the rotor position and the angular speed are obtained; performing reverse braking and forward starting control on the rotor according to the rotor position and the angular speed; during braking, reverse torque is applied to the rotor through rotating speed and current double-closed-loop control; circularly acquiring real-time bus voltage and comparing the real-time bus voltage with the bus voltage threshold value; and if the real-time bus voltage exceeds the bus voltage threshold, increasing the voltage amplitude of the high-frequency square wave injected by the d axis. The rotor position and the angular speed are obtained by injecting the high-frequency square waves, and the problem that the rotor observer is large in error at the low speed is solved; when the reverse rotation is started, the current of the stator coil is increased by increasing the voltage amplitude of the high-frequency square wave, so that the stator coil is used as an energy-consuming circuit to consume the counter electromotive force, the real-time bus voltage is reduced, and the cost is reduced.

The invention provides a detection circuit, wireless transmission equipment and an object detection method. The detection circuit comprises a frequency generator, a driving circuit, a resonance circuit and a controller. The frequency generator is used for generating square wave signals. The driving circuit is connected with the output end of the frequency generator and used for amplifying the square wave signal. The resonance circuit is connected with the output end and the input end of the drive circuit and used for converting the square wave signal into an oscillation signal. And the controller is connected with the resonance circuit and is used for determining the quality factor of the resonance circuit according to the voltage of the oscillation signal so as to determine whether an object is detected. Whether the foreign matter exists near the wireless transmission equipment or not can be simply and quickly detected, and meanwhile, the power consumption is low and the reliability is high.

The invention discloses a rotating speed measuring device and method, and the method comprises the steps: enabling a PI input square wave signal to sequentially pass through a square wave shaping unit, a sampling and counting unit, a sliding window processing unit and a rotating speed calculation unit in an MCU microcontroller for processing, and obtaining a rotating speed measurement result; the square wave shaping unit is used for processing complementation shaping of PI input square wave signals and sending complementation shaping square waves to the sampling counting unit; the sampling counting unit judges a square wave counting value input into the sliding window processing unit according to comparison between an absolute value of a counting difference value of two adjacent square waves and an allowable error threshold value; the sliding window processing unit automatically adjusts the depth of the sliding window according to the input square wave count value; the sliding window processing unit sends the adjusted window depth to the rotating speed calculation unit, the rotating speed calculation unit calculates the rotating speed according to the adjusted window depth, the self-adaptive sliding window depth is adopted, different depth windows are adopted for different frequency signals for frequency calculation, and the operation complexity is reduced.

The present invention provides an AC square wave dimming circuit, comprising: a central processing unit (CPU), an SPI to DAC circuit, a transistor-controlled switch circuit, an operational inverse phase circuit, a switch chip circuit, a power supply circuit, and a power operational amplifier. The CPU is connected to the SPI to DAC circuit via its SPI port, the transistor-controlled switch circuit is connected to the CPU via its PWM interface, the operational inverse phase circuit is connected to the SPI to DAC circuit and the switch chip circuit, respectively, the switch chip circuit is connected to the power operational amplifier, and the transistor-controlled switch circuit, the switch chip circuit, and the power operational amplifier are all connected to the power supply circuit. The CPU is configured to change the duty cycle of the power supply, and the SPI to DAC circuit is configured to provide the CPU with four dimming outputs. By using the AC square wave dimming circuit, the transmittance of industrial dimming glass can be controlled.

The application relates to a fast edge generating device and an implementation method thereof, and the device comprises a signal generator, a fast edge generator module and an amplifier module; the signal generator is used for generating a nanosecond-level square wave or pulse signal; an input end of the fast edge generator module is connected with the signal generator, is used for receiving the nanosecond-level square wave or pulse signal sent by the signal generator, and converts the nanosecond-level square wave or pulse signal into a lower edge signal; the lower edge signal is sent to the amplifier module; an input end of the amplifier module is connected with the fast edge generator module, is used for receiving the edge signal sent by the fast edge generator module, and amplifies the edge signal to a target high-voltage specification and then outputs. An input signal with extremely fast edge characteristics is generated by an external high-performance signal source, a general signal source is used to generate a signal, and the economy, flexibility and expandability of the system are significantly improved.

A driver circuit including a microcontroller and an output signal generator is provided. The microcontroller generates a start-up control signal received by the start-up control signal. The output signal generator provides a start-up output signal to the load in response to receiving the start-up control signal. The start-up output signal is based on a DC power signal provided by the DC power source. The load may be a TLED lamp. The starting output signal can be a sine wave or a square wave. The microcontroller receives a feedback signal corresponding to the load. The microcontroller generates a drive control signal in response to receiving the feedback signal. The output signal generator receives the drive control signal and, in response to receiving the drive control signal, provides a drive output signal, such as a DC signal, to a load. The drive output signal is based on the DC power signal.