Showing papers on "Serial port published in 2014"

An AER handshake-less modular infrastructure PCB with x8 2.5Gbps LVDS serial links

Abstract: Nowadays spike-based brain processing emulation is taking off. Several EU and others worldwide projects are demonstrating this, like SpiNNaker, BrainScaleS, FACETS, or NeuroGrid. The larger the brain process emulation on silicon is, the higher the communication performance of the hosting platforms has to be. Many times the bottleneck of these system implementations is not on the performance inside a chip or a board, but in the communication between boards. This paper describes a novel modular Address-Event-Representation (AER) FPGA-based (Spartan6) infrastructure PCB (the AER-Node board) with 2.5Gbps LVDS high speed serial links over SATA cables that offers a peak performance of 32-bit 62.5Meps (Mega events per second) on board-to-board communications. The board allows back compatibility with parallel AER devices supporting up to x2 28-bit parallel data with asynchronous handshake. These boards also allow modular expansion functionality through several daughter boards. The paper is focused on describing in detail the LVDS serial interface and presenting its performance.

Mobile Physiological Measurement Platform With Cloud and Analysis Functions Implemented via IPSO

Abstract: A physiological measurement platform is proposed for enabling users to measure physical condition regularly and to maintain good physical condition. The proposed system combines three basic physiological signal acquisition modules: an ECG module, a blood pressure module, and an oxygen saturation module. The physiological signals captured by the three physiological signal acquisition modules are sent via a data interface module to a mobile handheld device. Three communication systems are used for data transmission: RS-232 serial port wired transmission wireless, ZigBee, and Bluetooth. The captured physiological signals are presented on Android system mobile handheld devices, and the physiological data received by the mobile handheld device are sent to the cloud server via the Internet. After establishing a personal physiological database in the cloud server, the improved particle swarm optimization algorithm is used to determine the best personal physiological data, while setting physiological data dangerous levels for preliminary diagnosis. The dangerous levels are adjusted and set according to the personal medical records and physiological data of the subjects. When the physiological data reach the designated danger levels, it gives a warning to seek timely treatment by a medical unit. Finally, the system can incorporate video equipment to enable remote diagnosis and consultation by medical units.

Industrial control identity authentication method and device with state cryptographic algorithms

Abstract: The invention discloses an industrial control identity authentication method and device with state cryptographic algorithms, and relates to the field of industrial control safety. The device is composed of an identity authentication authorization management server and a state cryptographic serial port identity authentication terminal, wherein the identity authentication authorization management server comprises a TCM security chip, an operating system, an identity authentication authorization management system, an industrial firewall, an outer network interface, an inner network interface and a BIOS, and the state cryptographic serial port identity authentication terminal comprises a CPU, a confidentiality memorizer and a chip operating system. The reliable operation of the identity authentication authorization management server, the authorization of different authority limits of a read-only access terminal, a configuration modification terminal and a safety management terminal and the authority limit achieving method of three kinds of state cryptographic serial port identity authentication terminals for accessing an industrial control system through an outer network are achieved through the combining application of the state cryptographic algorithms, SM1, SM2 and SM3. The method and device can effectively and strictly manage the boundary of the industrial control system and the outer network to meet the needs of the industrial control system safety of our country, and the method and device have the advantages of being safe and reliable, fast in promotion, easy and convenient to maintain, low in operating cost and universal in use.

On the capability of smartphones to perform as communication gateways in medical wireless personal area networks.

Abstract: This paper evaluates and characterizes the technical performance of medical wireless personal area networks (WPANs) that are based on smartphones. For this purpose, a prototype of a health telemonitoring system is presented. The prototype incorporates a commercial Android smartphone, which acts as a relay point, or “gateway”, between a set of wireless medical sensors and a data server. Additionally, the paper investigates if the conventional capabilities of current commercial smartphones can be affected by their useas gateways or “Holters” in health monitoring applications. Specifically, the profiling has focused on the CPU and power consumption of the mobile devices. These metrics have been measured under several test conditions modifying the smartphone model, the type of sensors connected to the WPAN, the employed Bluetooth profile (SPP (serial port profile) or HDP (health device profile)), the use of other peripherals, such as a GPS receiver, the impact of the use of the Wi-Fi interface or the employed method to encode and forward the data that are collected from the sensors.

Remote control based smart home service robot system

Abstract: The invention provides a remote control based smart home service robot system. The remote control based smart home service robot system comprises a robot body, a network camera, a wireless fidelity (WiFi) to serial port module, a main control module, an ultrasonic distance measurement module, an infrared distance measurement, a nine-degree-of-freedom movement module and an execution device, wherein the network camera is used for shooting environmental information in front of the robot body, the WiFi to serial port module is used for converting a first instruction into a serial port instruction and sending the serial port instruction to the main control module, the ultrasonic distance measurement module is used for detecting distances between obstacles in multiple directions of the robot body and the robot body, the nine-degree-of-freedom movement module is used for detecting an angle of the front of the robot body, the main control module is used for sending a second instruction to the execution module, and the execution module executes corresponding actions according to the second instruction so as to perform automatic obstacle avoidance and control household appliances. The remote control based smart home service robot system is capable of adjusting and controlling indoor household appliances and the like and providing families with convenient functions of household appliances control, automatic obstacle avoidance, and security guards against theft.

Serial port server

Abstract: The utility model discloses a serial port server. The serial port server mainly comprises a power supply circuit module, an ARM9 processor, an internet access circuit module and a serial port circuit module. The ARM9 processor comprises at least one internet access circuit interface and at least one serial port circuit interface. The power supply circuit module is configured to be able to receive a power supply signal, so that the ARM9 processor works normally. The externally-connected network port of the serial port server can support the RJ45 interface manner and the USB interface manner, so that data can be uploaded through the outside WIFI and a 3G module. A serial port of the connection device can support connection of serial port equipment with the DB9 manner and the phoenix terminal interface manner. Due to the fact that interface manners of different serial port equipment of different industry spots are different, the serial port server with multiple interfaces can be applied in a wider range.

Water meter, with M_bus data remote transmission function, used for tiered pricing

Abstract: The invention discloses a water meter, with an M_bus data remote transmission function, used for tiered pricing. The water meter comprises a water meter base body, a water meter single-chip microcomputer, a clock module, a flow sensor metering circuit, a radio frequency card communication circuit, a UART serial communication circuit and an executor, wherein the clock module, the flow sensor metering circuit, the radio frequency card communication circuit, the UART serial communication circuit and the executor are connected with the water meter single-chip microcomputer. A UART serial port of the water meter single-chip microcomputer is connected with a former-level M_bus concentrator through the UART serial port communication circuit, the radio frequency card communication circuit is connected with a radio frequency IC card of a user in an induction mode and is connected with a corresponding signal end of the water meter single-chip microcomputer, and a control signal output end of the water meter single-chip microcomputer is connected with the control signal input end of a valve in the water meter base body through the executor. All kinds of meters are connected through M-buses, and therefore wiring and connection in energy-consuming intelligent management systems in residence communities, office spaces and the like are greatly simplified. The water meter has the advantages of being simple in structure, low in manufacturing cost and high in reliability.

Hand-held relay protection testing device for intelligent transformer station

Abstract: The utility model relates to a hand-held relay protection testing device for an intelligent transformer station The device comprises a housing, a human-machine interaction module, a data processing module, a signal interaction module, and a power module The human-machine interaction module comprises an LCD screen, a keyboard and an SD card management module The data processing module comprises an FPGA, a CPU and a memory module The signal interaction module includes an electric network port, an optical network port, an optical serial port, a hard contact input interface and a hard contact output interface, all of which are arranged on the housing The power module supplies stable work power to the human-machine interaction module, the data processing module, and the signal interaction module The device uses a lithium battery for power supply, has relay protection testing functions such as line protection, transformer protection, state sequences and any voltage and current, supports test settings based on intelligent transformer station IED equipment, is small in size, light in weight, long in battery life, and easy for operation, and can significantly improve the testing efficiency of IED equipment related to intelligent transformer station relay protection

Intelligent gateway device based on double-network mixed communication

Abstract: The invention relates to an intelligent socket device based on double-network mixed communication. The intelligent socket device based on double-network mixed communication consists of a singlechip, a power supply, a power line carrier communication module, a carrier wave circuit, an RF (radio frequency) communication module, an RF matching circuit, an antenna module, a memory, a keyboard, a serial port circuit, a clock, a calibration interface, a display screen, a metering circuit, a magnetic latching relay, a relay driving circuit and a shell. The intelligent socket device is connected with controlled electrical equipment through a slot; energy consumption of the controlled electrical equipment can be metered; data can be transmitted to a gateway through the power line carrier wave communication module and the RF communication module; the gateway uploads the data to a network server; switch-on and switch-off states of the intelligent socket device can be controlled remotely through the internet; and household appliances can be remotely and intelligently managed. Moreover, the display screen and the keyboard of the device support local data query and electrical equipment timing control.

Virtual serial cable

Abstract: Techniques and systems for providing a virtual serial cable are provided. A network server, a method, and a computer-program product may be provided. A network server may receive a serial communication from a first serially-connected device in a first location, wherein the first serially-connected device is assigned a first universally unique identifier (UUID), and wherein the serial communication includes a second (UUID) assigned to a second serially-connected device in a second location. A non-transitory computer-readable storage medium may contain instructions, when executed, cause one or more processors to obtain the (UUID), determine that the second (UUID) is assigned to the second serially-connected device, and create a virtual serial connection between the first and second serially-connected devices. The network server may transmit the serial communication to the second serially-connected device located in the second location. The serial communication causes the second serially-connected device to perform an operation.

Electric power field operating system combined with smartphone

Abstract: The invention relates to the field of electric power marketing, in particular to an electric power field operating system combined with a smartphone. The electric power field operating system combined with the smartphone comprises a smartphone terminal, an operation server and a marketing server, wherein a Bluetooth communication module, a serial interface and an infrared communication module are arranged in the smartphone terminal, the Bluetooth communication module is connected with the infrared communication module through the serial interface in a communication mode, an operation module is further installed in the smartphone terminal, and is used for sending out an operation instruction, and receiving information collected by the Bluetooth communication module, the operation server is connected with the smartphone terminal in a network communication mode to receive data in the operation module in a remote mode and/or to update the operation module, the marketing server is connected with the operation server in a communication mode to receive data in the operation server so that statistics and checking can be carried out, the infrared communication module is in communication with an electricity meter infrared device in an electric power field, and the Baud rate of the serial interface is adjusted to be matched with the electricity meter infrared device. According to the electric power field operation system combined with the smartphone, the time of meter reading is shortened, the phenomena that estimation meter reading is carried out, and the indicating number of an electricity meter is changed in an unauthorized mode are effectively and completely eradicated, and quality of meter reading is improved.

Physical therapy chair intelligent control system with embedded network function and massaging function

Abstract: The invention discloses a physical therapy chair intelligent control system with an embedded network function and a massaging function The physical therapy chair intelligent control system comprises functional modules including a main control chip, a physical therapy module, a health data acquisition module, a massaging module, a Bluetooth communication module, a remote communication module, a JTAG (Joint Test Action Group) and serial port debugging interface circuit, an SD (Secure Digital) card circuit and a USB (Universal Serial Bus) interface circuit, wherein the physical therapy module, the health data acquisition module, the massaging module, the Bluetooth communication module, the remote communication module, the JTAG and serial port debugging interface circuit, the SD card circuit and the USB interface circuit are all electrically connected to the main control chip The physical therapy chair intelligent control system has the advantages that human body health data acquired by the health data acquisition module in real time is uploaded to an intelligent terminal after being processed by a main control CPU (Central Processing Unit), and then uploaded to a remote server by the intelligent terminal, and health data acquisition, massaging and physical therapy are combined so that a user can enjoy more scientific health care experience

Safe and reliable computer based on loongson processor

Abstract: The utility model discloses a safe and reliable computer based on a loongson processor. The computer comprises a main board, a power source, an internal memory, a hard disk and a computer case. The computer case further comprises a front panel IC-card reader and a safe state indicator lamp. The main board comprises a South Bridge chip, a North Bridge chip, a BIOS chip, an audio interface, a VGA interface, a DVI-D interface, a PCIEX16 interface, a PCIE*4 interface, a network interface, a serial port, a PS/2 interface, a USB interface, an IO chip, a serial port chip, a network chip and a port control circuit. The loongson processor is adopted as a computer central processing unit. According to the computer, as the domestic loongson processor is adopted, the potential safety hazards of rear doors are reduced; as a reliable password module, a port control circuit and an identity authentication device are internally arranged, the functions of integrity protection of a BIOS and hardware equipment, port control of the hardware level and identity authentication are achieved, and the safety of the computer is greatly improved.

Intelligent socket based on network control

Abstract: The invention relates to an intelligent socket based on network control and a socket control method. The intelligent socket comprises a processor, a wireless transparent transmission module, a relay, a socket body and a power supply. The processor is connected with the wireless transparent transmission module through a serial port, and the wireless transparent transmission module receives on-off control information sent by a user client-side through an external server and sends the on-off control information to the processor. The processor is connected with the control end of the relay, and the processor controls on-off of the relay according to the on-off control information. The input end of the relay and the output end of the relay are connected with a live wire of the alternating-current power supply. The input end of the power supply is connected with external alternating-current commercial power, the output end of the power supply is connected with the power supply end of the processor, and the power supply converts the external alternating-current commercial power to electricity used by the processor so as to supply electricity to the processor. According to the intelligent socket, a network is used for controlling electrical equipment connected with the intelligent socket, the defect that a traditional socket must be controlled by people manually in a close range is overcome, and the function that turning-on and turning-off of the electrical equipment are controlled through the network remotely is achieved.

Image collecting and displaying device of high-speed TDICCD remote sensing camera

Abstract: The invention provides an image collecting and displaying device of a high-speed TDICCD remote sensing camera and relates to the field of space high-speed TDICCD camera electronic system researching. The device comprises a high-speed serial interface, a high-speed serial transceiver, an FPGA, a Cameralink transmitter, a Cameralink interface, an RS 232 serial transceiver, an RS 232 serial port, a high-speed image capture card, a high-speed solid storage card, a main control computer and an image display device. According to the image collecting and displaying device of the high-speed TDICCD remote sensing camera, CCD original image data of all passages of the high-speed TDICCD remote sensing camera can be effectively received and stored, processed and displayed in real time, conversion and output of the high-speed image data of multiple passages are achieved by means of the FPGA, hardware is easy to achieve, the device is flexible to control, hardware cost is little, integration is high, and a ground test system which is stable in performance and portable is provided for researching of the high-speed TDICCD remote sensing camera.

Data communication server

Abstract: The invention discloses a data communication server which comprises a power circuit module, a network port module, a microprocessor and a serial circuit module The network port module, the microprocessor and the serial circuit module are sequentially coupled with one another, and the power circuit module is connected with the microprocessor to provide a working power source for the microprocessor; the serial circuit module is configured in such a manner that serial signals can be processed by the serial circuit module; the network port module is configured in such as a manner that the network port module can be communicated with networks via at least one network port so as to transmit and receive network signals; the microprocessor is configured in such a manner that signals can be converted between Ethernet protocols and serial protocols by the microprocessor, so that the serial signals from the serial circuit module can be converted into the network signals, or the network signals from the network port module can be converted into the serial signals The data communication server has the advantages that a system with excellent performance and comprehensive functions can be implemented by advanced technologies, data can be transparently transmitted among serial ports and the networks via the data communication server, and the networks can be connected with one another, so that the data can be remotely transmitted

Multi-serial port parallel processing framework based on SoC (System on a Chip) FPGA (Field Programmable Gata Array)

Abstract: The invention belongs to the field of a distributed industrial control technology, and relates to a multi-serial port parallel processing framework based on a SoC (System on a Chip) FPGA (Field Programmable Gata Array). The framework comprises transceivers, and a SoC FPGA chip which is integrated with an FPGA and a processor CPU. The framework is characterized in that a plurality of UART (Universal Asynchronous Receiver/Transmitt) cores and a plurality of coprocessor MCUs (Microprogrammed Control Unit) corresponding to the UART cores are designed in the FPGA in the SoCFPGA chips according to an HDL (Hardware Description Language); a plurality of embedded memories corresponding to the coprocessoer MCUs are embedded into the FPGA, and each embedded memory is configured to be in a dual-port mode capable of reading and writing; and the plurality of UART cores and a plurality of corresponding transceivers are connected through RS232/RS422/RS485 interfaces. The device is high in system integration degree and low in hardware design cost, is capable of effectively reducing CPU load, promoting the transmission bandwidth of serial bus data, and flexibly expanding a plurality of serial channels.

Multi-serial-port parallel processing framework based on FPGA

Abstract: The utility model belongs to the technical field of distributed industrial control, and relates to a multi-serial port parallel processing framework based on FPGA (Field Programmable Gate Array). The multi-serial port parallel processing framework based on FPGA comprises a transceiver, a FPGA programmable logic chip and a processor CPU (Central Processing Unit). The CPU is connected to the FPGA chip through a CPU interface bus. The multi-serial port parallel processing framework based on FPGA is characterized in that multiple UART (Universal Asynchronous Receiver/Transmitter) cores and multiple coprocessor MCUs (Micro Control Unit) corresponding to the UART cores are designed in the FPGA chip through a hardware description language; multiple embedded memories corresponding to the multiple coprocessor MCUs are embedded in the FPGA; each embedded memory is configured to be in a dual-port mode capable of reading and writing operation; and the multiple UART cores and the corresponding multiple transceivers are connected together through RS (Recommend Standard) 232/ RS 422/ RS 485 interfaces. The multi-serial port parallel processing framework based on FPGA is low in hardware design cost, can effectively reduce CPU load and raise bandwidth of serial bus data transmission, and can expand multipath serial channels flexibly.

Teaching and experiment system of Internet of things

Abstract: The invention discloses a teaching and experiment system of the Internet of things. The teaching and experiment system is composed of a teacher end (1), a gateway portion (2) and student ends (3), wherein the teacher end is composed of a teacher computer, a projector and a screen, the gateway portion mainly comprises a router supporting a wired multi-node WLAN and Wi-Fi, the router can be connected with the Internet, the student ends are composed of a plurality of student computers, student experiment devices and student personal smart phones or tablet personal computers, the student experiment devices, the student personal smart phones or the tablet personal computers and the wireless router form a wireless network, and each student experiment device comprises a single chip microcomputer used as the core portion, a plurality of LED indicator lamps, a Wi-Fi module, an E2PROM5, an RS232 serial port interface circuit, a sensor and a programmer, wherein the LED indicator lamps, the Wi-Fi module, the E2PROM5, the RS232 serial port interface circuit, the sensor and the programmer are connected with the single chip microcomputer, and RS232 serial ports are connected with the corresponding student computers. According to the teaching and experiment system of the Internet of things, the quality of scientific research teaching and experiment of the Internet of things can be improved, and the requirement for course teaching is met.

Intelligent parking detection system based on wireless sensor network

Abstract: The invention discloses an intelligent parking detection system based on the wireless sensor network. The system comprises a plurality of detection nodes, an aggregation node, a server and a plurality of intelligent mobile terminals, wherein the detection nodes are distributed below parking positions and used for detecting the changes of magnetic fields of the parking positions to judge whether a vehicle is parked or not. The judgment result of the detection nodes is sent out in a wireless mode and is received by the aggregation node. The aggregation node analyzes content and sources of a data package, and uploads the content and the sources of the data package to the server through a USB serial port. The server displays, processes and counts the data, and provides a port for remote access. The intelligent mobile terminals have access to the server through the Internet, obtain the parking data and achieve the function for making an appointment of parking positions with the server.

Magnetic tape guidance AGV (Automatic Guided Vehicle) central control system

Abstract: A magnetic tape guidance AGV (Automatic Guided Vehicle) central control system is composed of a PLC module, a magnetic guidance sensor, a landmark sensor, an angle potentiometer, a safety shield sensor, a direct-current motor speed regulator, a power supply module, a wireless communication module, and an upper computer. The magnetic guidance sensor, the landmark sensor, the angle potentiometer, and the safety shield sensor are all connected to the PLC module. The PLC module is composed of a PLC, an A/D converter, and a D/A converter. The PLC module is connected with a motor through the direct-current motor speed regulator. The wireless communication module comprises a wireless communication subsidiary module and a wireless communication primary module. The wireless communication subsidiary module is connected with the PLC module through an RS-485 serial port line. The wireless communication primary module is connected with the upper computer through an RS-232 serial port line. The beneficial effects of the utility model reside in that the PLC module is employed for shortening the production and development period of the magnetic tape guidance AGV control system and improving the reliability and stability of the magnetic tape guidance AGV control system; and the system is convenient to maintain and strong in scalability.

Server serial port output method and server serial port output device

Abstract: The invention discloses a server serial port output method and a server serial port output device. The device comprises a BMC (Baseboard Management Controller), an either-or switching chip, a serial port output switching press button and a DB9 serial port connector, wherein the input end of an LPC (Low Pin Count) decoding module of the BMC is connected with an LPC bus of a server chip group; the output end of the LPC decoding module outputs system serial port information; the output end of the LPC decoding module and the serial port output end of the BMC are respectively connected to two input ends of the either-or switching chip; the output end of the either-or switching chip is connected with the DB9 serial port connector; the serial port output switching press button is connected to the switching control end of the either-or switching chip; and the either-or switching chip is controlled to be switched between the two input ends through control signals. The server serial port output method and the server serial port output device have the advantages that the free switching between a system serial port and a BMC serial port for output can be realized only through the DB9 serial port connector; the requirements of development personnel on the system serial port and BMC serial port information are met; and the mainboard design is also simplified.

Smart water management platform

Abstract: The invention discloses a smart water management platform which comprises a data processor, a data communication server, a database and a WEB client-side. The smart water management platform is characterized in that a remote control cabinet is connected with the data communication server through a GPRS network, the data communication server is further connected with the database and the WEB client-side through a bidirectional serial port, the data processor is connected with a water source and water quality remote monitoring device, a waterwork automation and secondary water supply device monitoring device and a pressure flow and user meter detection device respectively, and the WEB client-side is connected with a displayer, a printer and a manual input device. Existing scientific and technological means are fully applied to the smart water management platform, digitized and unified water supply work is achieved through remote monitoring on all of water supply links, a quick and convenient information management platform is provided for comprehensive arrangement of water supply enterprises and personal scheduling and arrangement, monitoring information of the links are displayed in a unified and intensive mode, and operation of an operator is facilitated.

Method and system for communications between terminal and virtual machine

Abstract: The invention discloses a method and system for communications between a terminal and a virtual machine. The method includes the steps that communication conversation connection between the terminal and the virtual machine is built; when a user operates through the terminal, instructions for operating and controlling the virtual machine by the user are encrypted and packaged to be a data packet by the terminal, and the data packet is sent to a virtual machine monitor; the received data packet is decrypted and analyzed by the virtual machine monitor to acquire the operation and control instructions, and the operation and control instructions are sent to the virtual machine through virtual serial ports; the operation and control instructions are read by the virtual machine through the virtual serial ports, corresponding tasks are executed according to the read operation and control instructions, and when the virtual machine is safely isolated, the operation and control instructions in the virtual machine monitor are read through the virtual serial ports to make the terminal still capable of controlling the virtual machine. In this way, actual requirements can be better met.

Server starting information remote checking and leading-out method

Abstract: The invention provides a server starting information remote checking and leading-out method The method mainly comprises a server starting information remote output mode, starting information remote SOL function terminal design and a starting information remote checking and leading-out method An SOL function terminal comprises a data transmission control module, a serial port control module, an SOL session control module, a user interaction processing module and a screen output control module The method comprises the steps that system starting information output by a BIOS is forwarded through the Ethernet by means of an SOL function supported by a standard IPMIV20, and then the starting information is processed and then presented to a user through the SOL function terminal According to the server starting information remote checking and leading-out method, a tmpfs memory file system is used for storing and leading out of starting information logs, the starting information logs are combined in the SOL function terminal, and therefore server information can be better acquired by the user under the situation that a server system can not be normally started or system starting breakdown needs to be analyzed in an off-line mode

Communication system of intelligent device, programmable protocol gateway device and communication method thereof

Abstract: The invention provides a communication method of a programmable protocol gateway. The method comprises the steps of S1, setting a plurality of ports; S2, judging the type of serial ports of the programmable protocol gateway, and if the type of the serial ports is an initiative uploading type, executing the S3, and if the type of the serial ports is a polling type, executing the S4; S3, calling a READ port to read data, storing the data into a memorizer, checking the data, and analyzing the data by utilizing the ST language; S4 calling a WRITE port to send data of a preset format in a timing mode, checking the data, calling the READ port to read the data, storing the data into the memorizer, checking the data, and analyzing the data by utilizing the ST language. The invention further provides the programmable protocol gateway and a communication system of an intelligent device with the same. According to the communication method of the programmable protocol gateway, the programmable protocol gateway and the communication system of the intelligent device, a user can convert various protocols into a standard protocol through programming, an upper computer only needs to analyze one protocol, and therefore the programming difficulty is reduced.

Multi-band data detector based on FPGA

Abstract: The invention provides a multi-band data detector based on the FPGA, and relates to the technical field of wireless sensor networks. The multi-band data detector comprises a wireless data collection module, a data management and transmission module and a memorizer module. The wireless data collection module is composed of 21 radio frequency receiving modules which are independent in function, wherein each radio frequency receiving module is in charge of data collection of one channel so that collection of wireless data messages of 16 channels in the 2.4 GHz frequency band, 4 channels in the 780 MHz frequency band and 1 channel in the 433 MHz frequency band. The collected wireless data messages are transmitted to the data management module through serial ports. The data management module dispatches the channels to transmit the wireless data messages to an upper computer through the Ethernet. The memorizer module controls a serial port receiver to receive a serial bit stream from the radio frequency receiving module. The data messages with all the channels stamped with timestamps are cached in the total FIFO, and finally the processed data messages are uploaded to the upper computer through an internet access so that protocol analysis can be conducted.

Beidou navigation system

Abstract: The utility model discloses a Beidou navigation system, and the system comprises a Beidou receiving antenna, a satellite searching module, a navigation map, a voice output unit, and a display touch unit. The satellite searching module comprises a low-noise amplifier, a digital processing base band circuit, and a central processor. The digital processing base band circuit communicates and is connected with the central processor through a serial port. The low-noise amplifier is electrically connected with the digital processing base band circuit sequentially through a band-pass filter and a frequency-mixing circuit. A communication pin of a Beidou digital processing base-band chip is connected with a serial port communication end of the central processor. According to the utility model, a Beidou filter is used for separation filtering, and the signal loss is small during frequency mixing, thereby greatly improving the accuracy of filtering during a filtering process. Compared with a process of frequency mixing and then filtering, the process can enable a state of signal collection to be obtained at first, thereby reducing the signal loss caused by filtering and frequency mixing to minimum limit.

Intelligent calibration system for power quality monitoring equipment

Abstract: The utility model discloses an intelligent calibration system for power quality monitoring equipment, and the system comprises a signal control and processing device, a GPIB interface card, a power quality signal generation device, i.e., a standard source, calibrated power quality monitoring equipment, and a printer. The signal control and processing device is connected with the standard source through a GPIB bus, and the standard source is connected with the calibrated equipment through an electrical test signal line. The calibrated equipment communicates with the signal control and processing device through a mode of the Ethernet or a serial port. The printer is connected with a computer through the GPIB bus. The system provided by the utility model is high in degree of automation, is convenient, is complete in function, and is easy to operate.