41 results about "Digital switching" patented technology

The invention provides an active-disturbance-rejection control method for an electromagnetic bearing two-level digital switching power amplifier embedded with model information. The method comprises the steps that an electromagnetic bearing two-level digital switching power amplifier mathematical model suitable for controller design is established based on the Fourier series theory and coil current characteristics; a direct current component in the mathematical model is defined as a modeling disturbance term, and feedforward compensation is directly carried out in the control law; parameter perturbation and an unmodeled part in the mathematical model are defined as unknown perturbation items, and real-time estimation is carried out through an extended state observer; a current item and a control input item in the mathematical model are used as known model information to be embedded into the design of the extended state observer; designing a feedback control law to carry out real-time compensation on the current item, the modeling disturbance item and the unknown disturbance item; a zero-order retainer and a current observer are adopted to carry out discretization processing on the controller, and the discretization processing is realized on a digital control platform based on a DSP (Digital Signal Processor). The method is high in current response speed and high in control precision.

The invention belongs to the technical field of digital switching power supplies, and particularly relates to an insulation resistance real-time detection method based on digital implementation. The method comprises an insulation detection circuit, the circuit comprises resistor strings, a first branch 5V power supply, a switch optocoupler Q1, switch tube strings G1 and G2, response driving resistors R6 and R7 and the like, and further comprises a second branch 48V power supply, VZ and other elements, a sampling point 1 of R5 voltage is obtained through a single-chip microcomputer, a sampling point 2 of input positive P and a sampling point 3 of input negative N are obtained, and the sampling point 1 and the sampling point 3 of the input positive P and the input negative N are connected in series. An optocoupler switch is controlled in cooperation with algorithm operation; according to the method, the low-voltage power supply is matched with the low-voltage period, and the on-off of the MOS tube is controlled by combining the on-off of the optocoupler to perform circuit combination, so that the detection of the insulation resistance is realized, and the detection cost of the insulation resistance is reduced.

The present invention relates to a digital energy storage module, including a battery management unit, a digital switching device and a battery pack, a plurality of battery packs are connected in series to form a battery module, the digital switching device includes a drive board assembly and a power board assembly, the power board assembly is provided with an electronic switch and a docking female head, the electronic switch includes a first switch and a second switch, the drive board assembly is provided with a docking male head and a communication interface, the digital switching device includes a negative electrode interface, a positive electrode interface and an output interface, the positive electrode interface and the output interface form a main circuit through the first switch, the negative electrode interface and the output interface form a bypass circuit through the second switch, the digital energy storage module includes a negative wiring terminal and a positive wiring terminal, the negative wiring terminal is connected to the total negative electrode of the battery module, the positive wiring terminal is connected to the total positive electrode of the battery module through the main circuit, the negative electrode interface is connected to the negative wiring terminal, and the drive board assembly is used to control the opening and closing of the electronic switch. The present invention can bypass the faulty battery module to ensure that the system continues to operate normally and efficiently.

The utility model provides a digital switching value input circuit and electronic equipment. The input circuit comprises an optocoupler receiving unit and a connector, the optocoupler receiving unit comprises a photodiode; the connector is at least provided with a first interface, a second interface, a third interface and a fourth interface; the first interface is connected with a power supply, the second interface is grounded, and the third interface and the fourth interface are connected to two ends of the photodiode; the input circuit has a first input state connected with a dry node and a second input state connected with a wet node; in a first input state, the second interface is in short circuit with the fourth interface, and the first interface and the third interface are connected to two ends of the dry node; in the second input state, the third interface is connected to the output signal end of the wet node, the second interface is connected with the grounding end of the wet node, and the fourth interface is in short circuit with the second interface; the digital switching value input circuit can be compatible with dry nodes and wet nodes, and the flexibility of the digital switching value input circuit can be improved.

The utility model discloses a kind of selectable valve core reset device, access oil pressure control system and emergency shutdown valve hydraulic control system, and is equipped with three oil paths: the first two access oil tank of oil pressure control system, the third access its oil pressure accumulator, dry road is equipped with electric valve and has multiple branch lines afterwards.Device contains switch control valve, auxiliary booster mechanism, hydraulic feedback mechanism, double filter, digital valve, proportional valve, proportional digital switching valve, auxiliary switching valve, two hydraulic control reversing valves and two travel switches, etc., and is connected into complete control and execution system by pipeline.It can be switched digital valve and proportional valve control mode by proportional digital switching valve, adapt to different working conditions;With hydraulic control reversing valve and travel switch cooperation, realize oil path accurate control and valve core reset monitoring feedback, improve accuracy;It is also equipped with main matching position sensor, manual valve etc., enhance system stability and controllability, can guarantee valve core reset reliable under complex working condition, improve oil pressure pump oil conveying system overall efficiency and reliability.

The utility model discloses a display device 1 loudspeaker sound source state detection device based on vibration, a display device is provided with at least two loudspeakers, the detection device comprises a vibration sensor and a test mainboard, the test mainboard is provided with a microcontroller and a switching value conversion circuit, and the microcontroller is respectively connected with the vibration sensor and the switching value conversion circuit; a vibration sensor is correspondingly installed at the position of each loudspeaker, the vibration sensors detect the vibration states of the loudspeakers so as to output vibration electric signals, the vibration sensors are connected with the microcontroller through a switching value conversion circuit, and the switching value conversion circuit is used for converting the vibration electric signals into digital switching values; and the microcontroller acquires digital switching values through the switching value conversion circuit and gathers and processes the digital switching values to form vibration state data of the loudspeaker sound source. According to the utility model, the detection device detects and identifies the silent / voiced output state of the loudspeaker audio left / right sound channel through the vibration sensor, thereby improving the cost performance of the product.

An electrical distribution system for personal water craft. The primary components include a digital switching device; a series of power lines; and one or more remote controls, a control panel, or both. The digital switching device is preferably a bank of solid state relay switches controlled by an MCU. The control panel also has an MCU. The control panel MCU communicates with the digital switching device MCU. This allows signals from the control panel to travel on a single communication cable to the digital switching device, significantly reducing the control panel footprint compared to prior art control panels. When a radio frequency (RF) receiver is provided, the electrical distribution system may receive signals from a remote control. The remote control may be utilized in addition to or in lieu of the control panel. Power lines run from the digital switching device to wherever power is desired in the vessel.

A power supply system includes an MPU, multiple power conversion circuits, and multiple extended-control circuits. The MPU supplies a digital switching driving signal to the power conversion circuit, and supplies a digital switching driving signal to the power conversion circuit. The extended-control circuit, which includes a CR circuit, generates a switching driving signal which is delayed with respect to the digital switching driving signal, and supplies the switching driving signal to the power conversion circuit. The extended-control circuit, which includes a CR circuit, generates a switching driving signal which is delayed with respect to the digital switching driving signal, and supplies the switching driving signal to the power conversion circuit.

The invention discloses an implementation method of a frequency sweep type storage battery internal resistance test system. The method comprises a digital synthesis technology generation method based on a non-injection type test signal source. A generation method for extracting a synchronization signal based on a non-phase-locked loop mode; the invention discloses a multiplier implementation method based on a digital switching technology and an analog switch. The invention discloses an implementation method for realizing high-precision storage battery internal resistance testing based on a non-high-precision device. The invention discloses a method for realizing internal resistance test data and charts of a storage battery based on strong processing capacity of a smart phone. According to the frequency sweep type storage battery internal resistance test system, high-precision storage battery internal resistance test data can be obtained with low implementation cost, and visual test comparison data can be obtained for the storage battery internal resistance test for a user; and the storage battery can be conveniently and effectively maintained, and different storage battery internal resistance test conclusions can be discriminated to form a comparative analysis conclusion.

The invention discloses a high-speed single-channel digital isolation chip, relates to a digital isolator, and aims to provide a high-speed single-channel digital isolation chip with strong anti-electromagnetic interference capability and stable output signal, the high-speed single-channel digital isolation chip comprises a receiving end RX circuit, the receiving end RX circuit comprises an OSC oscillator and at least two capacitors, the OSC oscillator is used for controlling the number of the capacitors mounted in the receiving end RX circuit, and the OSC oscillator is used for controlling the number of the capacitors mounted in the receiving end RX circuit. The invention has the beneficial effects that the OSC oscillator is added in the receiving end RX circuit, an oscillation signal of about 10 MHz can be generated, a 16-bit clock signal is generated through a 16-bit digital switching circuit, and the frequency of the receiving end RX circuit is increased, so that the frequency of the receiving end RX circuit is increased, and the power consumption of the receiving end RX circuit is reduced, so that the power consumption of the receiving end RX circuit is reduced, and the power consumption of the receiving end RX circuit is reduced. Therefore, the number of capacitors mounted between the isolation transformer and the demodulator DEMODE is controlled, a high-frequency signal with small-amplitude fluctuation frequency is generated, and the function is mainly used for reducing electromagnetic interference EMI in a circuit.

The present invention belongs to the field of power electronics and integrated circuits, and specifically provides a new gate voltage bootstrap switch sampling circuit to solve the problem that the traditional gate voltage bootstrap switch sampling circuit cannot start up too quickly due to the overly complex working path. The present invention includes a bootstrap circuit, a holding circuit and a sampling tube. The bootstrap circuit includes a bootstrap capacitor and a digital switching circuit; the bootstrap capacitor is used to obtain a signal source according to the digital switching circuit and output a bootstrap voltage to the gate of the sampling tube according to the signal source; the holding circuit is used to control the charging of the bootstrap capacitor and the reset of the sampling tube gate potential according to two opposite clock signals; the digital switching circuit is used to control the discharge of the bootstrap capacitor C1 according to two opposite clock signals, and control the holding circuit to control the gate voltage of the sampling tube. The present invention can complete the gate voltage boosting work of the switching tube through fewer component loops, effectively reducing the working time of the gate voltage bootstrap switch sampling circuit.

Clock enable signals are collected and summed. The number of simultaneously enabled clock enable signals can represent switching activity within a system and can be used as an indicator for power management, noise management, etc. of such a system. Digital switching activity sensing include performance of an operation to sum a quantity of open clock gates associated with a plurality of latches that are grouped into multiple subsets of latches. An activity indication is generated based, at least in part, on a result of the operation to sum the quantity of open clock gates associated with the plurality of latches.

The application discloses a kind of mixed radio frequency receiver group time delay test platform and method, including first, second vector signal source, first, second power divider, excitation signal generator, combiner, mixed radio frequency receiver of analog-digital, digital switching board, logic analyzer;First vector signal source simultaneously provides for second vector signal source and mixed radio frequency receiver reference clock, and second vector signal source generates OFDM modulated signal, and excitation signal is sent to logic analyzer by one end of second power divider, and triggers logic analyzer to prepare to accept test signal, and excitation signal is sent to second vector signal source by the other end of second power divider, and is superimposed to radio frequency receiver by combiner with OFDM modulated signal, and is accessed to logic analyzer by digital switching board.It is demodulated I / Q data information of test signal after logic analyzer receives excitation signal again, and calculates group time delay result.The application solves the problem of accurate measurement of group time delay of mixed radio frequency receiver of analog-digital.

The invention discloses an anti-saturation optical detection circuit, and relates to the technical field of electronic circuits. The circuit comprises a photoelectric conversion unit, a voltage comparison unit, an adjustable reference voltage unit and an output unit. By setting the adjustable threshold voltage, the circuit can effectively distinguish the effective shading signal from the ambient background light, the saturation phenomenon under the strong ambient light is avoided, and a higher reference voltage is set through the adjustable potentiometer. Only when a shielding object enables the phototube to output a strong signal exceeding the threshold value, the comparator turns over, so that tiny voltage fluctuation caused by electromagnetic interference is ignored. According to the utility model, stable and clean digital switching signals are output, and the reliability and the anti-interference capability of optical detection are obviously improved.

The utility model relates to the technical field of charging power supplies, in particular to a digital switching power supply for a control loop. The digital switching power supply comprises a power module which is used for adaptively outputting an adjustable voltage according to a load; the voltage detection module is connected with the power module and is used for detecting the voltage of the power module; the current detection module is connected with the power module and is used for carrying out current detection on the power module; and the control module is respectively connected with the power module, the voltage detection module and the current detection module and is used for controlling the power module to output corresponding voltage based on an input instruction, and the problem that a digital power supply in the prior art cannot simultaneously realize voltage boosting and voltage reducing functions is solved.

A transmitter equalization circuit based on analog modulation includes: a pair of pulse-width variable 1UI pulse generators and their serializers, a dynamic buffer, a pre-drive buffer, and a tailless current-mode driver. The first and second pulse-width variable 1UI pulse generators serialize four parallel FFE data streams and four parallel main data streams into one time-interleaved 1UI pulse data stream. The pre-drive buffer amplifies the serial main data to full swing and outputs it as a digital switching level to the switching transistor of the tailless current-mode driver. The dynamic buffer performs level shifting on the serial FFE data and outputs it to the current source transistor bias of the tailless current-mode driver. This invention can reduce the additional parasitic capacitance caused by the slicing of the auxiliary equalization driver, reduce the area and power consumption of the pre-driver and related circuits, and significantly reduce the glitches in the continuous output level of the pre-stage 4:1 serialization circuit.

The application relates to a digital switch quantity detection device of an inertial measurement system and a method thereof, which is composed of a monitoring control display module, a configuration file module, a switch quantity analysis and combination module and a bottom layer hardware communication module. When the configuration file is loaded into the memory, switch quantity information objects are automatically generated, the switch quantity information objects are stored in a linked list and managed in the linked list mode, and each object is mapped with the linked list through a unique index number. The monitoring control display module is dynamically generated according to the configuration file. In the test process, the switch quantity analysis and combination module converts the switch quantity information in the configuration file into information that can be displayed by the monitoring control display module, converts the control operation information of the monitoring control display module into information that can be recognized by the bottom layer hardware communication module, and feeds back the switch quantity information read by the bottom layer hardware communication module to the monitoring control display module after judgment and confirmation, so that the interface display is updated. The application can quickly and efficiently construct a test scheme of the inertial measurement system.

This disclosure relates to a computing unit including a pair of asymmetric ferroelectric devices and a method for forming the same. A ferroelectric computing unit includes: a first ferroelectric switching device including a first ferroelectric material portion and generating a digital output signal; and a second ferroelectric switching device including a second ferroelectric material portion and generating an analog output signal. The output node of one of the first and second ferroelectric switching devices is electrically connected to the gate electrode of the other to provide mixed-response characteristics of random digital switching and analog switching.

To provide a gateway and a substation system migration method capable of sequentially replacing a plurality of analog switchboards with digital switchboards at a substation for digital networking of the substation.SOLUTION: A gateway (GW) 40 comprises: a first communication interface unit 41 for performing data transmission with a TC master station 220 using a communication protocol complying with IEC61850; a second communication interface unit 42 for performing data transmission with digital switchboards 53, 54 using a communication protocol complying with the IEC61850; a third communication interface unit 43 for performing data transmission with a TC slave station 10 using a communication protocol other than the IEC61850; a fourth communication interface unit 44 for performing data transmission with the TC master station 220 using a communication protocol other than the IEC61850; and a protocol conversion unit 48.SELECTED DRAWING: Figure 3

The invention provides a multi-purpose electrical practical training method and device based on a PLC, and the method comprises the steps: constructing a hardware architecture integrated with multi-specification PLCs, and selecting different types of PLCs to adapt to diversified practical training demands from simple control to complex system protection; a digital quantity signal processing module and an analog quantity signal processing module are configured to realize bidirectional interaction of digital switch signals and analog operation parameters, and a signal interaction network of a real industrial scene is constructed; a man-machine interaction interface is designed, two functional modules of system simulation and a practical training platform are integrated through a touch screen panel, and parameter setting, state display and control logic simulation operation are supported; a modular software architecture is established, generator-transformer group protection, line protection, bus protection and control system simulation sub-modules are deployed in a unified manner, and a standardized hardware interface and a software expansion space are reserved to support function iteration.

The present application belongs to the technical field of generator equipment monitoring, and particularly relates to a method for preventing the sparking of a generator excitation brush. First, a monitoring module is arranged at the rotor excitation brush of the generator to obtain a digital switching signal and an analog signal of sparking frequency when the brush sparks. After the digital switching signal and the analog signal are preprocessed, it is determined whether the signal threshold is exceeded. If so, a de-excitation signal is generated. According to the de-excitation signal result, a solution is matched and pushed to the user. The present application can solve the problem of poor monitoring effect of the generator excitation system in the prior art.

Systems and methods for controlling the X-ray dosage by controlling anode current in the time domain are disclosed. In one of the aspects, a digitally switching X-ray emission system includes a digital switching unit operable to selectively connect a low voltage driving circuit to activate a field emission type electron emitting construct such that electrons are accelerated by a high gate voltage towards an anode target thereby generating a pulse of X-rays. The gate voltage is increased until a desired anode current is reached and PWM is used to slice the gate voltage in the time domain. The X-ray dose is controlled by slicing the anode current in time using PWM gate voltage.

The invention relates to a transmission unit (1) for a door (104), in particular a building door, comprising: a door module (30) designed for door-side arrangement, and a fixed module (20) designed for frame-side or fixed-leaf-side arrangement – ​​generally referred to as fixed-module-side arrangement – ​​wherein the door module (30) is connectable to at least one door-side functional unit (101), in particular a lock, for the exchange of data, in particular lock data, wherein the transmission unit (1) is designed for wireless data exchange between the door module (30) and the fixed module (20), wherein the fixed module (20) has: a fixed-module-side analog interface (22) designed for analog data exchange with a door and / or building control unit (102) and a fixed-module-side bus interface (23) designed for digital data exchange with the door and / or building control unit (102).

A flow regulation system for regulating a flow of a fluid from a fluid reservoir is disclosed having a fluid reservoir container, an effluent conduit adapted to discharge fluid from the fluid reservoir container, and a fluid turbine disposed in the effluent conduit. A generator is operatively connected to the fluid turbine for converting mechanical energy of the fluid turbine to electrical energy, and a power conditioning module is energized by the generator to alter voltage and current characteristics of electricity generated by the generator. A load manager is provided to monitor operational characteristic of the flow regulation systems. The load manager responds to a change in operational characteristics by sending a signal to alter an electrical load characteristic selected from the group comprising a clock frequency of digital computing circuits in the electrical load, a mean rate of digital switching operations of digital computing circuits in the electrical load, and a current draw of the electrical load.

According to the power split hybrid power device and the control method thereof, through cooperative control of a planetary gear structure and a motor, a power split system with an engine running at the highest efficiency point all the time is achieved, and the power split hybrid power device has the advantages of being efficient and intelligent. A power split hybrid power device comprises an engine, a first planetary gear device, a first motor, a second planetary gear device, a second motor, a first-stage speed reducer, a second-stage speed reducer and a control system. The first planetary gear device is connected with an engine to serve as a power input end, is connected with the second planetary gear device in parallel through the first-stage speed reducer and then is connected to a driving shaft of a vehicle through the second-stage speed reducer and the differential mechanism, and is responsible for providing parallel driving force or kinetic energy recovery for the vehicle. The control system comprises a motor control unit, a battery management unit, an inverter control unit, an analog quantity conditioning unit, a digital switching value conditioning unit and the like; according to the vehicle driving working condition, the driving mode is intelligently switched, and power output of the engine and the motor is adjusted.

Embodiments here broadly relate to a system which allows for flexibly, and adaptively, accommodating for various analog and digital streams. In one example case, the system can accommodate for the use of both legacy modems as well as newer digital modems. The system may not require the use of complex and expensive, very high data rate and / or very high throughput wideband digital switches in some architectures, as well as potentially eliminating the need for some additional processing equipment found in traditional architectures (i.e., wideband signal processors (WSP), legacy modem data converts (LDMCs), etc.).

Clock enable signals are collected and summed. The number of simultaneously enabled clock enable signals can represent switching activity within a system and can be used as an indicator for power management, noise management, etc. of such a system. Digital switching activity sensing include performance of an operation to sum a quantity of open clock gates associated with a plurality of latches that are grouped into multiple subsets of latches. An activity indication is generated based, at least in part, on a result of the operation to sum the quantity of open clock gates associated with the plurality of latches.

The invention discloses a satellite-borne multi-scale hybrid broadband switching system and method, and the system comprises a satellite-borne microwave photon transparent transponder which is used for receiving a radio frequency ultra-wideband signal of a first bandwidth scale, and completing the satellite-borne communication switching of the first bandwidth scale; the satellite-borne optical domain channelization switch is used for receiving the first bandwidth scale ultra-wideband mixing optical signal of the satellite-borne microwave photon transparent transponder and completing second bandwidth scale satellite-borne communication switching; the satellite-borne digital switch is used for receiving a second bandwidth scale broadband communication signal of the satellite-borne optical domain channelized switch and completing third bandwidth scale or data packet scale satellite-borne communication switching; and the satellite-borne comprehensive management and control machine is used for receiving the signaling channel data of the satellite-borne digital switch, completing instruction analysis and distribution, and managing and controlling the satellite-borne communication exchange. According to the invention, the utilization efficiency of the on-satellite spectrum and power is improved, a satellite communication system can be supported, and the capabilities of large port bandwidth, high communication capacity, fine exchange scale, flexibility and controllability, multi-satellite networking and the like can be realized at the same time.

The invention relates to the technical field of analog signal processing and optical communication, and provides a switching type laser driving circuit and a driving method. The driving circuit comprises a signal conversion module, a control module, a driving module, a switch module, a current control module and a current mirror module, the signal conversion module is used for converting an input CML differential signal into a digital switch signal; the control module is connected with the signal conversion module and is used for performing phase conversion and enabling control on the digital switch signal; the driving module is connected with the control module, and the driving module is composed of multiple stages of digital phase inverters and used for improving the signal fan-out capability; the switch module is connected with the driving module and is used for receiving the driving signal and controlling the conduction state of the current mirror module; the current control module is used for accessing a reference current and controlling the magnitude of the output current of the current mirror module; and the current mirror module is respectively connected with the switch module and the current control module, and is used for outputting modulation current to drive an external laser assembly and outputting monitoring current.

The invention belongs to the technical field of reinforcement learning. The invention provides a digital switching power supply neural network controller training method based on reinforcement learning. According to the embodiment of the invention, the neural network controller of the digital switching power supply is designed, mathematical modeling is not needed, and an excellent control effect can be realized only by using the design and control of the training process. Quantitative adjustment of control performance and voltage overshoot can be realized by using a Gaussian reward function based on adjustable parameters, and a controller conforming to performance indexes is designed.