Showing papers on "Serial port published in 2015"

Intelligent Agriculture Greenhouse Environment Monitoring System Based on IOT Technology

Abstract: In recent years, greenhouse technology in agriculture is to automation, information technology direction with the IOT (Internet of Things) technology rapid development and wide application. This paper takes CC2530 chip as the core, presents the design and implementation of agriculture Greenhouse Environment monitoring system based on ZigBee technology, the wireless sensor and control nodes takes CC2530F256 as core to control the environment data. This system is made up of front-end data acquisition, data processing, data transmission and data reception. The ambient temperature is real-time processed by the temperature sensor of data terminal node. Processed data is send to the intermediate node through a wireless network. Intermediate node aggregates all data, and then sends the data to the PC through a serial port, at the same time, staff may view, analysis and storage the data by the PC that provide real-time data for agricultural greenhouse, fans and other temperature control equipment, and achieve automatic temperature control.

Three phase and polarity encoded serial interface

Abstract: A high speed serial interface is provided. In one aspect, the high speed serial interface uses three phase modulation for jointly encoding data and clock information. Accordingly, the need for de-skewing circuitry at the receiving end of the interface is eliminated, resulting in reduced link start-up time and improved link efficiency and power consumption. In one embodiment, the high speed serial interface uses fewer signal conductors than conventional systems having separate conductors for data and clock information. In another embodiment, the serial interface allows for data to be transmitted at any speed without the receiving end having prior knowledge of the transmission data rate. In another aspect, the high speed serial interface uses polarity encoded three phase modulation for jointly encoding data and clock information. This further increases the link capacity of the serial interface by allowing for more than one bit to be transmitted in any single baud interval.

Three-phase energy storage method of solar air conditioner

Abstract: The invention provides a three-phase energy storage method of a solar air conditioner, and belongs to the field of solar air conditioners An absorbing type refrigerating working pair serves as an energy storage medium, a three-phase energy storage device is connected with a generator in a solar absorbing type refrigerating system in parallel, a solar heat collecting medium provides heat for the three-phase energy storage device and the generator, surplus solar collected heat is stored in the three-phase storage device in an energy storage medium chemical potential energy mode by adjusting the flow of the heating collecting medium entering the three-phase energy storage device in real time, and good matching of a drive heat source and an air conditioner load is achieved The three-phase energy storage method avoids the dangers brought by crystallization during serial connection of a two-phase energy storage device and a generator in the prior art, the load adjusting function of the solar air conditioner can be achieved through an energy storage system by means of gas-liquid-solid three-phase high energy storage density, and the crystallization rate of 50% enables the size of the energy storage device to be reduced by more than a half than the size of an energy storage device in a two-phase energy storage mode The system is simple, adjustment is convenient and flexible, the amount of released cold is stable, and a common solar air conditioning system can be easily improved into an energy storage air conditioning system

Introduction to Arduino

Abstract: In this chapter, we’ll be introduced to the Arduino prototyping platform. As with the previous chapter, if you’re already using Arduino, and you’re programming it yourself, feel free to skip this chapter. Mind you, that apart from the Arduino language itself, we’ll also focus on its serial communication capabilities, in combination with Pd. This means that we’ll be using both ways of serial communication (Serial.println() and Serial.write()), and we’ll analyze the way they work, their differences, as well as their advantages and disadvantages compared to one another.

Pemantauan Parameter Panel Surya Berbasis Arduino secara Real Time

Abstract: Monitoring the output parameters of a solar module is required for assessing its performance under real operating conditions. This paper presents a new technique for monitoring the output parameters i.e. current and voltage of solar module directly under real operating conditions. In this new monitoring technique, the output parameters of a solar module can be directly processed in real time condition and their results are displayed in a graph. The monitoring system is developed using microprocessor Arduino Atmega 328P and equipped with calibrated current and voltage sensors, a data acquisition system which is integrated directly into an Excel spreadsheet using the PLX-DAQ application program and a memory card for backup. The monitoring system is connected to a computer using a RS232 serial port. The collected data is saved directly into a spreadsheet and plotted in real time. This technique provides an easy access to the collected data for further analysis.

Data processing method and device

Abstract: The embodiment of the invention provides a data processing method and device, relates to the field of communication, and aims to achieve the purposes of improving the use efficiency of an interface of an existing chip and reducing the waste of the interface resource of the chip. The method comprises the following steps: receiving, by a first receiving interface, first data transmitted by receiving terminal equipment through a data transmitting interface and storing the first data to a first buffer area; acquiring the first data through the first buffer area in a query interrupt thread; querying a thread mutual exclusion flag bit; setting, by a serial port communication thread, the thread mutual exclusion flag bit for indicating whether a serial port communication thread acquires state information; setting the thread mutual exclusion flag bit as a first identifier when the serial port communication thread acquires the state information, and setting the thread mutual exclusion flag bit a second identifier when the serial port communication thread does not need to acquire the state information; discarding the first data if the thread mutual exclusion flag bit is the first identifier; or performing interrupt processing according to the first data if the thread mutual exclusion flag bit is the second identifier.

Integrated electronic system for modular microsatellite platform

Abstract: The invention provides an integrated electronic system for a modular microsatellite platform. The integrated electronic system comprises a processor module, a telemetry-acquisition module, a command module, a serial port communication module, a spread spectrum measurement and control module, a navigation module, a power drive module and a power distribution module, wherein the processor module is used for achieving program running, data storage and data processing; the telemetry-acquisition module is used for completing analog quantity telemetry-acquisition and data transmission; the command module is used for receiving a remote control PCM signal output by the spread spectrum measurement and control module and analyzing remote control commands and output command pulses; the serial port communication module is used for achieving serial port communication between the processor module and a platform single machine and between the processor module and other integrated electronic modules; the spread spectrum measurement and control module is used for achieving remote measurement, remote control and distance measurement; the navigation module is used for achieving GPS/BD positioning and timing functions; the power drive module is used for implementation of a current drive heater, a solenoid valve, a self-locking valve and a magnetic torquer according to control requirements; the power distribution module is used for powering on/off the platform single machine according to the control requirements. The integrated electronic system achieves function integration and centralized control, facilitates function extension, has universality and is applicable to microsatellites.

Intelligent lighting control system

Abstract: The invention discloses an intelligent lighting control system The intelligent lighting control system comprises a DSP (Digital Signal Processing) processor, multiple groups of cameras, an image processing unit, a clock unit, a serial port communication unit, a sender and a power line carrier bus, wherein the cameras are distributed in a lighting area, and are connected with the DSP processor through the image processing unit; the DSP processor is connected with the control input end of the sender through the serial port communication unit; the control output end of the sender is connected with a plurality of receivers through the power line carrier bus; the receivers are connected with corresponding lighting lamps According to an intelligent bathing control system of the intelligent lighting control system, the image processing unit is adopted to detect the position of a person in lighting space in order to dynamically determine a manned area and an unmanned area; regular intense lighting is conducted on the manned area, and lighting reducing or lighting closing is conducted on the unmanned area; as the human body moves, the efficient lighting area is dynamically adjusted, and the purpose of reducing invalid lighting is achieved; the intelligent lighting control system is energy-saving and environment-friendly, and has good application prospects

IPMI (intelligent platform management interface) based method for serial port redirection

Abstract: The invention discloses an IPMI (intelligent platform management interface) based method for serial port redirection. The IPMI based method includes that an IPMI-based SOLTerminal (serial over local area network terminal) serves as an application program for user interaction to receive user input; a serial port of a target machine is redirected to an LAN (local area network) through interaction between the LAN and the target machine; the LAN feeds back serial port information to a user local monitor through the SOLTerminal to provide a monitoring, managing and configuring platform for a manager. Particularly, when management software, such as SSH and Telnet, dependent on a server operating system is not available on the conditions of server operating system nucleus crash or server shutdown and the like, the method plays a crucial role in system trouble locating and troubleshooting.

Device and method for upgrading firmware through storage devices on basis of multiple vehicle-mounted MCUs

Abstract: The invention provides a device for upgrading firmware through storage devices on the basis of multiple vehicle-mounted MCUs and belongs to the field of firmware upgrading of vehicle-mounted MCUs. The device for upgrading the firmware through the storage devices on the basis of the multiple vehicle-mounted MCUs comprises two or more vehicle-mounted MCUs and a power control module. The power control module carries out unified management on all the MCUs, one MCU is a main MCU, the other MCUs are slave MCUs, the main MCU is connected with the slave MCUs, and the main MCU is provided with an SPI interface and storage device interfaces matched with the storage devices. The device further comprises an SPI storage device matched with the SPI interface. According to the device for upgrading the firmware through the storage devices on the basis of the multiple vehicle-mounted MCUs, the MCUs carry out communication through serial ports and are externally connected with the storage devices, the MCUs are upgraded uniformly through the storage devices, the complex operation of upgrading is avoided, and high practicability and generality are achieved.

A serial port based debugging tool to improve learning with arduino

Abstract: In this paper, a serial port based debugging tool for the Arduino platform is presented. The tool is based on a modification of the Arduino IDE (Integrated Development Environment) and libraries. It includes the basic options of debugging tools (stepping, breakpoints, variable inspection, etc.) without the need of a hardware debugging interface. The tool has been designed taking into account that is going to be used by beginners or intermediate users, which is the most common profile among Arduino users. The tool tries to promote debugging procedures that are not based on trial and error, and contributes to the Arduino environment with another teaching resource.

Wireless communication module based on lora communication technology

Abstract: The utility model discloses a wireless communication module based on lora communication technology, it is provided inside the lora terminal equipment, include: ultra -low power consumption microprocessor, it receives the data that lora terminal equipment gathered through the serial ports, RF chips, its with ultra -low power consumption microprocessor connects for become the electromagnetic wave with data conversion, the antenna, its with RF chips connects for send the antenna for other lora terminal equipment's wireless communication module with the electromagnetic wave. The utility model has the advantages of simple structure, communication distance is far away, with low costs, the low power dissipation.

Automatic chip power-on reliability detection device and detection method

Abstract: The invention discloses an automatic chip power-on reliability detection device and a detection method and aims to solve technical problems in the prior art that hand-operated operation easily causes errors, measurement is inaccurate, and long-time and large-intensity power-on detection is not suitable. The device comprises a PC used for operating display and control software and a test board for chip tests, wherein the PC is equipped with the display and control software, and the test board comprises a serial port chip, an FPGA, a main control chip, a numerical control power supply module, an A/D conversion chip, a slot of a test chip and a card in matching with the slot of the test chip. The automatic chip power-on detection method comprises steps that, the PC receives test information, the display and control software assembles the test information into data frames and sends the data frames to the serial port chip, a tested chip is tested through the test board, and the data frames transferred from the FPGA are parsed by the automatic power-on reliability detection software of the main control chip. According to the device and the method, test result accuracy is improved, the test process is simple, and operation is simple and convenient.

Design and development of daughter board for USB-UART communication between Raspberry Pi and PC

Abstract: Development of real time applications using platforms such as Raspberry Pi often requires interfacing of different sensors and communication modules. They can be easily interfaced using RS232 port but now a days it is replaced by USB. Interfacing sensors and modules having only USB ports, some sort of port conversion is required that can emulate a serial port providing a virtual COM through UART interface. This paper propose design & development of daughter board for USB to UART Communication to Raspberry Pi that provides communication with different embedded devices by the use of USB to UART Convertor Boards. With the help of these convertors, bidirectional data transmission is achieved. FT232RL & CP2102 IC's are used in the proposed daughter boards. A comparative analysis is presented between these boards in terms of cost, performance, reliability, packaging, required baud rate.

Beidou and GPS (Global Positioning System) dual-mode timing embedded time synchronization equipment and software design method

Abstract: The invention discloses Beidou and GPS (Global Positioning System) dual-mode timing embedded time synchronization equipment and a software design method. The Beidou and GPS (Global Positioning System) dual-mode timing embedded time synchronization equipment takes a programmable logic device, a Beidou receiver, a GPS receiver and an embedded microcontroller as a core, and is also provided with an external hardware circuit integrated serial port, an IRIG-B (Inter-Range Instrumentation Group) code input isolation module, an IRIG-B (DC(Direct Current)) code differential output module, an IRIG-B (AC(Alternating Current)) code hardware output module and an IRIG-B (AC) code input decoding module, wherein the embedded microcontroller is connected with an embedded key and a liquid crystal display; an IRIG-B code system is designed by utilizing the programmable logic device and the embodied microcontroller; the current modes, the current time information and the mode states of the five modes, namely, GPS, Beidou, DC code decoding, AC code decoding and time keeping are integrated into a code stream, is transmitted to the embedded microcontroller, is subjected to serial port processing, and is displayed on the liquid crystal display; the requirement on integrating the functions of multi-satellite timing, high-precision time synchronous code encoding outputting and inputting decoding, as well as real-time time information display and mode switching is met.

Partition illumination energy-saving switch control system and control method thereof

Abstract: The invention discloses a partition illumination energy-saving switch control system and a control method of the system. The system is composed of at least one camera, at least one human body inductive sensor, a microcontroller, at least one relay, a plurality of lamps and a computer, wherein the camera is connected with the microcontroller through a USB interface, and the human body inductive sensor and the relay are connected with the microcontroller through a GPIO port; a brightness calculation program module, an image preprocessing program module and an image processing program module are embedded in the microcontroller; the microcontroller is connected with the computer through a USB interface or a serial port; the computer comprises a system parameter setting program module. The method is based on an image processing technology, a partition illumination mechanism is introduced so that partition illumination can be achieved, and the lamps in the areas where people exist or do not exist can be automatically turned on or off along with movement of people. According to the control system and the control method of the system, due to partition illumination and human body following illumination, huge waste of electric energy can be effectively avoided, and intelligent illumination is achieved.

Embedded integration parking space detector and detecting method thereof

Abstract: The invention discloses an embedded integration parking space detector and a detecting method of the detector. A power module, a camera module, a CF card memory module, a voice control module, an LED indicator lamp control module, a serial port module and a network module are integrated on a DSP control panel and then packaged into a shell. In the initial detection process, an IP address of the parking space detector is set; the number of covered parking spaces is set; the parking spaces and light reflecting locator areas are defined; the reserved parking spaces, bound license plate numbers, and interval time for capturing images are set; in the detecting work process, one parking space image is captured every period of time; whether vehicles stay in the parking spaces is determined, and the license plate numbers of the vehicles in the parking space images can be recognized automatically; an LED indicator lamp is used for displaying; voice prompting and information uploading are carried out at the same time. The detector is simple and compact in structure; display colors of the LED lamp can be controlled according to the unoccupied states of the parking spaces, the license plate numbers of the vehicles can be recognized automatically, the vehicles illegally occupying the reserved parking spaces are warned, and the problem that a driver has the difficulty in finding the vacant parking space and finding the vehicle in a parking lot can be effectively solved.

Smart home system based on intelligent routing robot

Abstract: The invention relates to a smart home system based on an intelligent routing robot A robot technology and an intelligent routing technology are introduced into the smart home system; the capabilities of intensive control, interaction intelligence and control of cost superposition of the smart home system are improved by using automatic movement, image identification capability, remote communication and network control capabilities of an intelligent router of the intelligent robot The intelligent router based on an OpenWrt system is adopted and the router is overlapped on the robot; a camera, a voice identification module, a universal remote controller module, an intelligent security and protection module and the like are also arranged above the robot A cell phone client is in communication connection with the router to control the router to send a corresponding instruction to a serial port; an Arduino platform connected with the serial port of the router receives the instruction, and processes and judges to control the corresponding module to do corresponding operation, so that the control on household appliances is realized, and functions of measuring domestic environment parameters, remotely controlling the robot to move, remotely monitoring by videos and the like are realized

Intelligent home system

Abstract: The utility model discloses an intelligent home system The intelligent home system is mainly composed of a gateway server, clients, a modem, a wireless router, a wireless coordinator, and at least one wireless node; the wireless router is connected with the Internet via the modem; the clients are connected with the wireless router; the wireless router is connected with the gateway server via a network cable and/or the mobile Internet; the gateway server is connected with the wireless coordinator via a serial port; and the wireless coordinator is connected with all of the nodes The intelligent home system has the characteristics of convenient system installation and maintenance, low cost, dynamic management of home control nodes, convenient client operation and high system safety, and is stable and efficient, and energy-saving and environment-friendly

OPC UA conversion apparatus of Modbus communication protocol, and method

Abstract: The invention discloses an OPC UA conversion apparatus of a Modbus communication protocol. The apparatus comprises an OPC UA address space management module, an address space browsing module, a data read-write module, a data subscription module, an OPC UA communication module, a parameter configuration module, a Modbus serial port communication processing module and a Modbus/TCP communication processing module. The invention also discloses an OPC UA data conversion method of a Modbus communication protocol. A Modbus communication protocol is converted into an OPC UA protocol, multiple Modbus devices based on serial communication or TCP communication are packaged to form an OPC UA server, and an OPC UA client program conforming to the OPC UA protocol performs reading, writing and subscribing operation on data of these Modbus devices according to an OPC UA standard. A new technical standard OPC UA technology is introduced to the devices using the Modbus communication protocol, the Modbus devices are enabled to acquire and modify the data of the Modbus devices directly according to the OPC UA standard, and the devices using the Modbus communication protocol can operate normally in the new standard without changing software and hardware.

Low-power-consumption wireless sensor network

Abstract: The invention discloses a low-power-consumption wireless sensor network. The low-power-consumption wireless sensor network comprises a monitoring terminal, a network, an aggregation node and a sensing node, wherein the monitoring terminal, the network, the aggregation node and the sensing node are connected in sequence; the aggregation node comprises a storage module, a GPRS (General Packet Radio Service) module, a display module, a wireless radiofrequency module, a serial port module, a clock module, a processor module and a power supply module; the sensing node comprises a wireless communication module, a main control module, a data acquisition module and a power supply module; the main control module is connected with the wireless communication module and the data acquisition module respectively; the power supply module is used for supplying power to the wireless communication module and the data acquisition module respectively. The demand of lowering the energy consumption is fully considered in a hardware part, and a low-power-consumption hardware chip is adopted; equipment does not perform communication at a dormancy stage, so that the energy consumption is lowered; when communication is needed, the equipment is started by the main control module; energy saving is taken as the main idea in design; the nodes enter a dormancy state in time when the nodes do not perform communication, so that the energy consumption is lowered.

Intelligent bimodule communication electricity meter and centralized meter reading and networking method

Abstract: The invention belongs to the field of intelligent electricity meter communication, and provides an intelligent bimodule communication electricity meter and a centralized meter reading and networking method. The intelligent bimodule communication electricity meter comprises an MCU control module, a switch power module and an externally arranged communication module; the switch power module adopts a power panel comprising an internally arranged communication module; the internally arranged communication module and the externally arranged communication module are communicated with the MCU control module through two corresponding UART serial ports respectively. Bimodule communication of the intelligent electricity meter is achieved through the internally arranged communication module and the externally arranged communication module, the internally arranged communication module and the externally arranged communication module are communicated with the MCU control module through the corresponding UART serial ports respectively, and therefore the problem that in the prior art, data congestion occurs at the data interface end of the electricity meter due to the fact that the two modules adopt one series port is solved.

Aluminum profile extrusion machine real-time energy consumption monitoring and energy consumption abnormality detection system

Abstract: The present invention is an aluminum profile extrusion machine real-time energy consumption monitoring and energy consumption abnormality detection system which comprises a smart electric meter, a smart gas meter, a serial port server, a switch and a monitoring server. The smart electric meter and the smart gas meter are connected to the serial port server through an RS-485 bus. The serial port server converts an RS-485 serial port into a TCP/IP network interface, and the data two-way transparent transmission from the RS-485 serial port to the TCP/IP network interface is realized. The monitoring server monitors load energy consumption data in real time and records the energy consumption data of different loads, historical energy consumption data is used to calculate the normal detection interval to unit aluminum profile energy consumption with a regression type support vector machine method, and the energy saving estimation of extrusion production can be carried out according to the comparison of predicted energy consumption data and actual recorded energy consumption data. According to the technical scheme, the energy consumption data of an extrusion set in a workshop can be collected in real time, and through analyzing the historical energy consumption data, the energy consumption abnormal phenomena such as energy leakage, overlong standby time and an inappropriate extrusion parameter in production can be detected.

Method for controlling serial port communication and communication serial port

Abstract: A method for controlling serial port communication is provided and solves the problem of setting a baud rate for serial port communication. The invention belongs to the technical field of digital communication, specifically to a method for automatically detecting an asynchronous serial port communication protocol. For one scheme, a host computer mode switching unit outputs a first characteristic level signal to an embedded device through a data sending request wire, and switches the host computer to a baud rate adaption mode. The mode switching unit of the embedded device monitors the signal on the data sending request wire. When the received signal is the first characteristic level signal, the embedded device is switched to the baud rate adaption mode to start the baud rate adaption method. A device for realizing the method is also provided.

Infrared bi-transmitting person counting method

Abstract: The invention relates to an infrared bi-transmitting person counting method. One side of an entrance and exit of a special place is provided with two infrared transmitters, the other side is provided with two infrared receivers, the two infrared receivers are connected with a serial port server via switching circuits respectively, and the serial port server is connected with a PC via a TCP/IP network. The serial port server converts signals of the infrared receivers, the signals are transmitted to the PC via the TCP/IP network, the PC receives signals transmitted by the serial port server, if the signals are firstly received by the second infrared received close to the outdoor and later received by the first infrared receiver close to the indoor, the number of persons indoors is added by one; and otherwise, if the signals are firstly received by the first infrared receiver close to the indoor and later received by the second infrared received close to the outdoor, the number of persons indoors is reduced by one. Thus, the number of persons entering or exiting the room can be accurately counted.

LED display module and method for detecting states thereof

Abstract: The invention relates to an LED display module and a method for detecting states thereof. The LED display module comprises a module display driving circuit, a microprocessor module and a first module input and output interface. The microprocessor module is provided with a first serial port and a plurality of input/output ports; the first module input and output interface comprises a module input interface portion and a first serial port portion, the module input interface portion is electrically connected with an input end of the module display driving circuit, and the first serial port portion is electrically connected with the first serial port of the microprocessor module; the multiple input/output ports of the microprocessor module are electrically connected with an output end of the module display driving circuit. The LED display module and the method have the advantages that the various states of the LED display module can be detected by the aid of circuit designs, additional configured monitoring cards can be omitted, and the intelligence of the LED display module can be improved.

Stage element centralized control system

Abstract: The invention discloses a stage element centralized control system. The stage element centralized control system comprises a server and a display control terminal, wherein the server is connected with the display control terminal, the server is connected with a wireless control terminal through a wireless router, a large screen host computer is connected with the wireless router, an inertial motion capture system and an LED (light emitting diode) large screen, and the server is further connected with a DMX512 (digital multiplex 512) control platform, a PLC (programmable logic controller) centralized control system and a 232T0485 serial port. The stage element centralized control system integrates stage elements into a software control system, not only achieves control presetting and automatic execution in a time series for the stage elements, but also can switch to real time field control as needed whenever necessary, guarantees perfect and reasonable presentation of the stage elements in a performance process, intelligently and accurately controls video, voice frequency, lamplight, machinery, scenes and the like in a stage performance, and prevents faults or faulty operation from occurring. Additionally, the stage element centralized control system is convenient to carry and simple to use, and effectively reduces cost of the stage performance.

Serial communication based one-to-many communication system and implementation method

Abstract: The invention provides a serial communication based one-to-many communication system and an implementation method. Main control equipment sends communication request command to a slave unit to which data is sent; the slave unit receives the data sending request command and returns communication response to the main control equipment; the main control equipment receives the communication response of the slave unit and then sends the sent data to the slave unit. The system solves the simple one-to-many communication mode of the traditional serial port, supports a one-to-many communication mode, and solves the problem that a host unit is communicated with a plurality of slave units without depending on hardware switching due to few ports of the host unit. The communication ports are reduced in resources, the port resources are saved, and the one-to-one end-to-end communication port is logically implemented.

Link layer to physical layer (phy) serial interface

Abstract: A link layer to physical layer (PHY) serial interface is disclosed. In one aspect, a system on a chip (SoC) integrated circuit (IC) includes a link layer circuit, and a remote IC includes a Universal Serial Bus (USB) PHY circuit. A bus having four or fewer wires connects the two ICs. A link bridge communicates with the link layer circuit and serializes USB Transceiver Macrocell Interface (UTMI) signaling received from the link layer circuit as high speed (HS) USB messages for transmission to the remote IC. The link bridge also receives HS messages from the USB PHY circuit on the remote IC. The link bridge deserializes the HS messages to extract UTMI signaling and passes the extracted UTMI signaling to the link layer circuit.