Showing papers on "Serial port published in 2017"

Intelligent industrial security cloud gateway equipment system and method

Abstract: The invention discloses an intelligent industrial security cloud gateway equipment system and method The industrial cloud security gateway equipment and method is characterized in that upper cloud data is encrypted and added with data classification identifiers and time stamps, and decryption, security scanning and multiple security authentication access control are carried out on data on downlink intelligent equipment, so that interconnection, protocol conversion, and multi-directional transparent and real-time transmission among cloud equipment, enterprise datacenter equipment and various intelligent equipment on an industrial field can be achieved An intelligent industrial cloud security gateway is embedded intelligent equipment comprising various serial ports, communication interfaces for a field bus and field intelligent equipment such as the industrial Ethernet, communication interfaces for wireless mobile communication and wired Internet cloud equipment, wireless or wired local area network interfaces for Bluetooth, broadband and the like, an Ethernet switch, a GPS module, and embedded software The intelligent industrial cloud security gateway can systematically prevent user data leakage and network virus attacks, is core equipment of a secure and reliable intelligent industrial cloud service system, and can serve intelligent industrial manufacturing

Microcontroller architecture for power factor correction converter

Abstract: A circuit for driving a motor of a compressor includes a microcontroller, which includes an op- amp, a comparator, a first serial interface, and a first dedicated pin. The op-amp amplifies a value indicating current in a power factor correction converter, which includes a power switch. The comparator asserts a comparison signal in response to the amplified value exceeding a reference value. The comparison signal is output on the first dedicated pin. A programmable logic device (PLD) includes a second serial interface in communication with the first serial interface and a second dedicated pin. The comparison signal is received on the second dedicated pin and the PLD receives control messages from the microcontroller via the second serial interface. The PLD sets a value in an off-time register based on a control message from the microcontroller. The PLD controls the power switch according to the comparison signal and the off-time register.

Double-network eight-serial port server with terminals

Abstract: The invention discloses a double-network eight-serial port server with terminals. The server comprises a shell, a main controller, a serial port expansion circuit, serial port processing circuits, a network processing circuit and network interface circuits, wherein the main controller, the serial port expansion circuit, the serial port processing circuits, the network processing circuit and the network interface circuits are respectively arranged in the shell; the serial port expansion circuit and the network processing circuit are respectively connected with the main controller; the serial port expansion circuit is connected with at least eight serial port processing circuit; the network interface circuits are respectively connected with the network processing circuit; a CPLD control circuit is connected between the serial port expansion circuit and the main controller; a plurality of connection terminals are arranged on the side surface of the shell; a baffle plate is hinged on the side surface, where the connection terminals are arranged, of the shell; the baffle plate is located above the connection terminals; and the baffle plate can lean against the connection terminals. The double-network eight-serial port server is capable of overcoming the problems that the transmission efficiency is low and the shell of the serial port server is single in function as the serial port server in the prior art is bad in anti-interference ability and a plurality of serial ports cannot be well transmitted in parallel.

RJ45 16-serial port server

Abstract: The invention relates to the field of electronic servers and discloses an RJ45 16-serial port server. The RJ45 16-serial port server comprises a serial port module, a microcontroller and an Ethernet module, wherein the serial port module and the Ethernet module are both connected to the microcontroller so as to realize conversion and transmission of a serial port signal and a network signal; the serial port module comprises an RJ45 port and a serial port expansion module; and the serial port expansion module is connected to the microcontroller, thereby expanding serial port interfaces of the microcontroller to 16 interfaces. According to the RJ45 16-serial port server, the problem of excessively few ports of a serial device in the prior art is solved; the serial port expansion is realized; and the conversion from the serial port signal to the network port signal is realized.

Unmanned aerial vehicle flight simulation demonstration verification platform based on serial port communication

Abstract: The invention belongs to the technical field of flight simulation technology and unmanned aerial vehicle semi-physical simulation experimentation and specifically relates to an unmanned aerial vehicle flight simulation demonstration verification platform based on serial port communication. The unmanned aerial vehicle flight simulation demonstration verification platform based on the serial port communication mainly comprises a main flight simulation computer, a flight control computer, a visual scene computer, an instrument computer, an actuator controller, a ground station operation device and a data monitoring computer. According to the unmanned aerial vehicle flight simulation demonstration verification platform based on the serial port communication, a commonly adopted serial port communication mode between unmanned aerial vehicle airborne devices is sufficiently taken into consideration, a flight simulation technology and a serial port communication simulation technology are combined, an unmanned aerial vehicle semi-physical simulation development verification platform is established, simulation state monitoring and fault simulation simulation are carried out by using the data monitoring computer and the design state of an unmanned aerial vehicle flight control system is more visually demonstrated and verified through the displaying of the visual scene computer and the instrument computer; therefore, the design of the unmanned aerial vehicle flight control system and the verification of the unmanned aerial vehicle flight control system are developed to the utmost extent in an integrated manner and the unmanned aerial vehicle flight simulation demonstration verification platform based on the serial port communication can be widely applied to the development work of the unmanned aerial vehicle flight control system.

Serial port awakening system not using handshake control line and serial port communication method

Abstract: The invention discloses a serial port awakening system not using a handshake control line and a serial port communication method. The serial port awakening system comprises an awakening processor and an awakened processor, wherein a universal input/output end, a serial port receiving end and a serial port sending end are arranged on the awakening processor; the universal input/output end, the serial port receiving end and the serial port sending end are also arranged on the awakened processor; and the serial port receiving end of the awakened processor is connected with the universal input/output end of the awakened processor. The invention furthermore discloses a method for performing serial port communication by using the serial port awakening system. By use of the system and the method, hardware connection lines can be simplified, so that the mutual coupling property of the system is reduced; and due to use of standard serial port communication, the universality of the system can be improved.

Constant voltage protection serial communication server

Abstract: The invention discloses a constant voltage protection serial communication server The constant voltage protection serial communication server comprises a microprocessor, a redundant power circuit, a constant voltage module, a first network module, a second network module, a serial interface circuit and a serial expansion circuit, wherein the first network module, the second network module and a serial processing circuit are connected with the microprocessor, the serial interface circuit is coupled to the serial expansion circuit, and the redundant power circuit is connected with the microprocessor through the constant voltage module The constant voltage protection serial communication server overcomes the defects that in the prior art, a serial communication server is liable to signal interference, consequently, communication is interrupted, the service life of equipment is seriously affected, the server cannot work normally due to a power outage and a network outage, and a microprocessor is damaged because the voltage output by a power module is unstable or a voltage value cannot be constant

Zero-Transition Serial Encoding for Image Sensors

Abstract: Off-chip serial buses are the most common interfaces between sensors and processing elements in embedded systems. Due to their length, these connections dissipate a large amount of energy, contributing significantly to the total consumption of the system. The error-tolerant feature of many sensor applications can be leveraged to reduce this energy contribution by means of an approximate serial data encoding. In this paper, we propose one such encoding called Serial T0, particularly, effective for image sensors data. By exploiting the correlation among pixels colors, Serial T0 significantly reduces the energy dissipation on a serial connection, with minimal impact on image quality, and extremely low codec overheads. Moreover, it allows runtime quality reconfiguration, and can be integrated with standard serial protocols (SPI, I2C, CSI-2, and so on) without requiring modifications to legacy peripherals. We show that Serial T0 is superior to both accurate and approximate state-of-the-art encodings, not only in terms of pure energy saving, but also when combined with realistic error tolerant applications (OCR and face recognition). In the best case, the energy on the bus can be reduced of more than 75% with less than 4% maximum error on the decoded data.

Adaptive Internet of things intelligent gateway implementation method and intelligent gateway equipment

Abstract: The invention discloses an adaptive Internet of things intelligent gateway implementation method and intelligent gateway equipment, and aims to solve a technical problem that connection with a gateway through serial ports is difficult to adapt to fast connection of various types of equipment. The adaptive Internet of things intelligent gateway implementation method comprises the steps of performing classified configuration on a plurality of serial ports of an intelligent gateway, and enabling each serial port to only access the same type of intelligent equipment; when intelligent equipment is accessed, recognizing the intelligent equipment type corresponding to the accessed serial port, and taking an equipment communication protocol list corresponding to the intelligent equipment type; sequentially matching communication protocols in the equipment communication protocol list with the intelligent equipment until the communication protocol is successfully matched with the intelligent equipment, performing data interaction with the intelligent equipment by using the serial port and the matched communication protocol, and quitting the adaptive process. The gateway equipment comprises an equipment access unit, a power supply unit, a storage unit, a matching judgment unit and a master control CPU, wherein the master control CPU is electrically connected with the equipment access unit, the power supply unit, the storage unit and the matching judgment unit.

Communication network server

Abstract: The invention discloses a communication network server. The communication network server comprises a serial port expansion circuit, an optocoupler isolation circuit and a serial port interface circuit, wherein the optocoupler isolation circuit executes conversion of optoelectronic signals and is configured to be connected to the serial port expansion circuit and the serial port interface circuit separately. The communication network server further comprises a network interface circuit and a microcontroller. The serial port expansion circuit is configured to execute conversion between serial port signals and TTL signals; the microcontroller is configured to be connected to the network interface circuit to receive network data, convert the TTL signals into a network protocol and send the network protocol to the network interface circuit; the microcontroller is configured to be connected to the serial port expansion circuit to receive the TTL signals, convert the network protocol into TTL signals and send the TTL signals to the serial port expansion circuit. By means of the communication network server, serial port interface equipment can be maintained, and accidental damage caused by severe environments such as ground wire loop voltage, surge, indirect lightning strike and static to serial port equipment is avoided.

Embedded VxWorks based satellite attitude and orbit control system fault simulation system and method

Abstract: The invention relates to an embedded VxWorks based satellite attitude and orbit control system fault simulation system and method, which adopts a host computer and a target machine technology to realize a single machine model and a failure mode. The method comprises the following steps. A fault simulation host computer runs the Matlab modeling software, establishes a fault model based on Simulink, and generates a target application under the VxWorks real-time operating system under. A fault simulation target machine, connected with the fault simulation host computer through a network, runs the VxWorks real-time operating system and the target application for fault simulation. A fault injection and instruction control machine, connected with the fault simulation target machine and a satellite mounted single-mode machine respectively for transmitting the failure mode instruction of the single-mode machine to realize the switching between the single-mode simulation serial port of the fault simulation target machine and the real single-mode serial port of the satellite mounted single-mode machine. The system and the method of the invention can carry out fault diagnosis and system reconfiguration tests to improve the fault-tolerant ability of the single-machine hardware and the attitude track working in the failure mode of the satellite attitude control system so as to ensure the safety of the satellite.

Door automation system for smart home implementation

Abstract: In this paper is presented the design and the prototype implementation of a pneumatic door automation system intended to be used for access control in smart homes. The structure of the developed application is realized around the PIC 16F877A microcontroller which operates together with a pneumatic actuator based on a double acting cylinder controlled through an air distributor with solenoid valve. In the basic mode, the door opening and closing actions can be initiated manually by the user, through password authentification. The main parameters of the system can be configured locally, but an indepth diagnoses and reconfiguration can be performed only through the serial interface which ensure the communication between the main module of the system and an external PC. Compared with other similar systems, the proposed implementation solution allows a high operation speed and very good reliability due to the pneumatic actuation. In addition, the door automation module can be integrated in a centralized access control system dedicated to the smart homes that has all the appliances and other electricity based equipments connected into a local network.

Intelligent control ware based on embedded system

Abstract: The utility model discloses an intelligent control ware based on embedded system, including embedded system nuclear core plate, supplementary singlechip, switching power supply and various interface circuit, various interface circuit are for setting up audio interface, infrared interface, ethernet interface, SD interface, I2C interface, CSI interface, LCD interface, a plurality of USB interface and the more serial ports on embedded system nuclear core plate, interface circuit will examine core plate's interface expand, realize embedding or being connected of external device with various. The utility model discloses an intelligent control ware can carry out the collection of the communication of multiple mode, multiple sensor and table count certificate simultaneously, steerable multiple consumer simultaneously, and corresponding sensor, output device and application only need be installed to various occasions, can all carry out various required intelligent control, and it can be multiplexing to have good, comprehensive strong, the equipment of commonality, program development and the installation is simple, operation convenient to use, software and hardware upgrade easy advantage.

Domain controller testing system and method for smart car

Abstract: The present invention provides a domain controller testing system and method for a smart car. The system includes a scene simulation module, a simulation control module, a vehicle model unit, a real-time data processing unit, and a communication unit. The input end of the simulation control module is connected with the output end of the scene simulation module, and the input end of the real-time data processing unit is connected with the output end of the vehicle model unit. The communication unit is connected with the simulation control module, the real-time data processing unit and the controller to be measured through serial ports. The scene simulation module is used to simulate the driving environment of a vehicle, and the simulation control module simulates an environment awareness signal according to the driving environment and sends the signal to the controller to be measured through the communication unit. The controller under test performs self-learning training according to the environment awareness signal and the vehicle state feature to obtain a vehicle control signal, and sends the vehicle control signal to the real-time data processing unit through the communication unit. The invention can reduce test cost and test risk and improves test repeatability.

Single-bus asynchronous serial port communication system and communication method thereof

Abstract: The invention discloses a single-bus asynchronous serial port communication system and a communication method thereof. The single-bus asynchronous serial port communication system comprises master equipment and slave equipment, wherein the master equipment is connected with the slave equipment through a data bus; and a serial port communication interface circuit is arranged in the slave equipment, and the slave equipment realizes Baud rate detection and adjustment of the master equipment, receives a control command and data of the master equipment and returns corresponding response data. The single-bus asynchronous serial port communication system transmits data through a single bus, and automatic Baud rate detection is realized by adopting a bit width counting and comparing technology; namely, the slave equipment can transmit data to the master equipment only via one data bus, so that the complexity of a communication interface is greatly reduced; by the adoption of the special bit width counting and comparing technology, the communication Baud rate can be automatically detected quickly and accurately through the automatic Baud rate detection; and the number of adopted integrated circuit transistors is small, and the chip cost is reduced.

Serial-connection power supply chip, serial-connection power supply system, virtual digital currency mining machine and server

Abstract: An embodiment of the invention discloses a serial-connection power supply chip, a serial-connection power supply system, a virtual digital currency mining machine and a server. The serial-connection power supply chip comprises n serial-connection to-be-powered units which are powered in a serial connection manner, a voltage domain is formed in every to-be-powered unit, and voltage of a power source of the serial-connection power supply chip forms n-stage serial-connection voltage domains, wherein n is an integer more than 1; a signal level conversion unit is serially connected between every two adjacent to-be-powered units and used for communication signal level conversion between every two adjacent to-be-powered units. The serial-connection power supply chip has the advantages that the work performance of the to-be-powered units and the whole work performance of the chip are improved, and the whole production cost is reduced.

Internet-of-things system for monitoring elevator operation

Abstract: The invention discloses an internet-of-things system for monitoring elevator operation The system comprises a plurality of main control panels, a plurality of black boxes, a plurality of car power line carrier modems, a machine room power line carrier modem and a machine room gateway, wherein a plurality of elevators are provided with the multiple main control panels correspondingly, and the multiple black boxes are arranged at the tops of the multiple elevators; a gateway bluetooth module of the machine room gateway and DB9 serial port bluetooth conversion modules of the multiple main control panels form a bluetooth communication network; each car power line carrier modem is connected to one corresponding black box through a network cable; the multiple car power line carrier modems are connected to the machine room power line carrier modem through power lines or accompanying cables arranged in hoistways; the machine room power line carrier modem is connected to the machine room gateway through a network cable; the machine room gateway is in communication connection with a remote monitoring center; and each black box can be in communication connection with a multimedia intelligent terminal in a corresponding car The system has the advantages that the machine room gateway realize collection of state data of the multiple elevators and transmission of audio and video conversation data

Multi-serial port switching system and method used for debugging server system

Abstract: The invention discloses a multi-serial port switching system and method used for debugging a server system The system comprises a CPLD (Complex Programmable Logic Device) connected with each preset serial port of the server system, and a BMC (Block Multiplexer Channel) connected with the CPLD, wherein the CPLD is used for connecting external debugging equipment, and sending the input information of the debugging equipment to the BMC, and the BMC is used for controlling the CPLD to switch over to a corresponding serial port to be connected with the debugging equipment according to the input information of the debugging equipment According to the system provided by the invention, optimizing for serial ports of a conventional system is performed on the basis of the CPLD and the BMC, external interfaces are reduced, all that is needed is to connect the debugging equipment to the CPLD, and automatic switchover to a corresponding serial port can be achieved according to needs, so that product debugging is achieved, development and debugging and later-stage maintenance for new products can be facilitated greatly, and the debugging efficiency in product development stage is improved

Dormancy control method and terminal

Abstract: The invention discloses a dormancy control method and a terminal. The method comprises the following steps: establishing a virtual communication card in an AP, wherein the AP is connected with a first modem, and the first modem is connected with a first entity communication card and a second entity communication card; setting a serial port between the AP and a second modem, wherein the second modem can obtain network authentication data of the virtual communication card from the AP through the serial port; detecting whether there is data transmission in a link between the second modem and the AP; and when the data transmission does not exist in the link within a preset time length, controlling a clock of the serial port to be at a dormancy state so as to enable the serial port and the second modem to be dormant.

Multichannel redundancy and isolation type serial port communication server

Abstract: The invention discloses a multichannel redundancy and isolation type serial port communication server. The serial port communication server comprises a microprocessor as well as a redundant power source circuit, a first network module, a second network module and a serial port expansion circuit which are coupled with the microprocessor, wherein a serial port interface circuit is further coupled to the serial port expansion circuit; a microcontroller is configured to execute data processing and signal controlling; the serial port interface circuit is configured to execute conversion between TTL signals and serial port signals; the serial port expansion circuit is configured to expand serial port interfaces on the serial port interface circuit; the first network module and the second network module are configured to package and process network signals of network equipment; the redundant power source circuit is configured to provide stable power supply for various components of the serial port communication server. The server overcomes the defects that the serial port communication server in the prior art is prone to signal interference, thereby causing communication outage and affecting the service life of equipment and the server cannot work normally due to power outage and network outage.

Multi-channel data acquisition synchronization system and method

Abstract: The invention provides a multi-channel data acquisition synchronization system. The multi-channel data acquisition synchronization system comprises a GPS timing module, an ARM base board, an information sampling board and a computer, wherein the GPS timing module sends the serial port data of the GPS absolute time and second pulse signals to the ARM base board; the ARM base board receives the serial port data and the second pulse signals, implements multi-channel splitting, and then sends the data and signals to the information sampling board; the information sampling board resolves, records and acquires the data and sends the data to the computer; and the computer receives, stores and reads the data sent by the information sampling board, draws a waveform curve graph, and analyzes the circuit data according to the waveform curve graph. The circuit data is acquired by adopting the multi-channel data acquisition synchronization system provided by the invention, no signal interference exists between each acquisition channel, each channel has a uniform time reference, and thus the data with higher accuracy can be acquired.

Bus fault injection system based on DSP and FPGA

Abstract: The invention discloses a bus fault injection system based on DSP and FPGA. The system comprises a DSP main processor, an FPGA, a principal computer, an Ethernet interface module, a DA module, an RS422 interface module, an RS485 interface module, a relay network, a resistance network and a storage module; the required fault mode is configured through a serial connection in a bus system, the RS422/RS485 interface module is used for receiving the serial signals of the bus, the serial signals are transformed into parallel signals by FPGA, after the signals are processed by DSP, and fault injection signals are outputted by the DA module and the relay network controlled by FPGA. According to the bus fault injection system, the hardware fault injection is adopted, the fault injection functions of a physical layer, an electric gas layer and a protocol layer can be achieved, so that faults occurred in the actual running process of the hardware are simulated more real, and various faults are added in real time in the normal communications of the bus equipment.

Serial interface engine asic with usb physical transceiver based on fpga development board

Abstract: The data transmission is fairly quick and easy in recent years. Nowadays, there are many serial data transmission methods, such as I2C, SPI, RS-232, USB (Universal Serial Bus), and so on. Recently, USB not only works with convenience but also transmits data fast. It becomes a standard peripheral interface between FPGA development board and personal computer (PC). To satisfy those requirements, the data transmission speed and data volume of USB physical transceiver are continuously improved. The transmitted data will be queued with first-in first-out register (FIFO), proceeding with serial interface engine (SIE), compiling with the USB packet format, and converting it into an analog differential signal by using the Cypress's USB PHY (Port Physical Layer) chip. Then the USB packet will be sent from the transmitted FPGA board to the received FPGA board through the USB cable. Two FPGA boards with USB PHY are used to verify the transceiver function. After the functional verification has been completed, an application-specific integrated circuit (ASIC) of FIFO and SIE are implemented with TSMC 0.18μm CMOS technology. The gate counts, power consumption, operating frequency, and chip area are 14,547, 2.6742 mW, 50 MHz, and 0.7×0.67 mm2, respectively, at the supply voltage of 1.8 V and the total pins of 40 pins.

Fault warning method, device and system for computer system

Abstract: The invention provides a fault warning method, device and system for a computer system. After a fault identification code of the system is embedded into a BIOS, the method comprises the steps of detecting an operating state of a CPU or the BIOS from a startup process according to the fault identification code of the system, when the operating state is consistent with a fault state corresponding to the fault identification code of the system, determining the operating state to be the fault state corresponding to the fault identification code of the system to determine a warning state of the computer system; transmitting a level signal corresponding to the warning state to warning equipment through a GPIO interface, wherein the warning equipment is light-emitting equipment or sound production equipment. According to the fault warning method, device and system, the condition of a printout delay of a printing function when the fault state is displayed by using a display or serial port equipment is avoided, and the problem that the fault state displayed by the display or the serial port equipment cannot be accurately matched with an actual fault state is solved.

Usage of single-chip computers for control MIMO systems

Abstract: This paper deals with usage of single-chip computers for controlling MIMO systems. The aim is to design a general control system, which is easy to use and easy to implement for other MIMO systems. The performance of control system is limited by the performance of used MCU (PIC 16F876A) and its peripherals (2×PWM, 8×A/D, MAC, …). The key tasks of MCU are communication with upper level and implementation of required control action together with data collection. The serial interface provides communication between control system (PC) and MCU. SCADA/HMI system monitors a controlled system. The application is accessible via Internet browser in local area network (LAN).

Vending machine function extension device and transformation method

Abstract: The invention relates to the technical field of commodity selling equipment, and provides a vending machine function extension device. The device comprises a master controller, a touch display screen, a simulation keyboard input interface used for receiving an input signal generated by a vending machine keyboard input device, a simulation keyboard output interface used for transmitting a keyboard signal coming from a simulation keyboard signal conversion module to a vending machine VMC, the simulation keyboard signal conversion module, an MDB/VTS interface, an MDB/VTS data processing module, a UART serial port and a wireless communication module; the master controller is connected with the simulation keyboard signal conversion module, the MDB/VTS data processing module, the UART serial port, the touch display screen and the wireless communication module. The invention further provides a transformation method of the vending machine. The vending machine function extension device and the transformation method have the advantages that detailed commodity information is displayed on the touch display screen, and selection is convenient; more non-cash transaction payment modes are added; the vending machine function extension device is reasonable in structure, novel and wide in application prospect.

Automatic test system and method of Android intelligent terminal

Abstract: The invention relates to an Android intelligent terminal technology, aims to solve the problem that an automatic test technology aiming at an Android intelligent terminal depends on adb, and provides an automatic test system and method of the Android intelligent terminal. The technical scheme can be summarized that the automatic test system of the Android intelligent terminal comprises an automatic test framework, a configuration management module, a serial port management module and an automatic test script. The automatic test system of the Android intelligent terminal has the beneficial effects that the test efficiency is substantially improved, the labor cost is reduced, and the system is applicable to Android intelligent terminal testing.

Modularization intelligent acquisition and control system

Abstract: The utility model discloses a modularization intelligent acquisition and control system, reach rather than the 4G wireless telecommunication terminal, power module, liquid crystal display terminal and the sensor acquisition module that are connected characterized in that including data acquisition controller: communication interface includes TTL serial ports, RS485 communication interface, RS232 communication interface to the collection of monitoring facilities operating condition information is treated in the realization, sensor acquisition module carries out measuring smoke transducer, pressure sensor, temperature sensor and humidity transducer and constitutes by treating around the monitoring facilities environmental information. The utility model discloses a modularization intelligent acquisition and control system, equipment operating condition information and environmental information on every side, not only accessible liquid crystal display terminal shows, gos back the intelligent Mobile Terminal and control administrative center that reach the distal end on the accessible 4G wireless telecommunication terminal to control administrative center monitors and manages the running state of equipment, guarantees the safe operation of equipment.

Direct-current photovoltaic power generation system

Abstract: The invention provides a direct-current photovoltaic power generation system. At least one photovoltaic module is connected via an input terminal of each power optimizer, an optimizer group is formed by serial connection of output terminals of the plurality of power optimizers, and an intelligent management device is adopted to aggregate the plurality of optimizer groups, so that communication between the external and each power optimizer is realized, each power optimizer is controlled to run in a corresponding mode, and grid-connected power generation or grid disconnection is carried out. In the invention, grid-connected power generation is realized by using the single-stage power optimizers in combination with the intelligent management device instead of a two-stage DC/DC system of the prior art, and the problem of low efficiency of the prior art due to the application of the two-stage DC/DC system is solved.