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To satisfy the requirements of complex distributed power electronic system (PES) communication, this paper has proposed a single optic-fiber link data communication protocol based on the Manchester code due to an vacancy in the commonly-adopted protocols, analyzed the encoding and decoding principle of Manchester code, defined the formats of command frame and data frame, calculated the communication...
IoT (Internet of Things) has attracted a lot of attention recently. IoT devices need to report their data or status to base stations at various frequencies. The IoT communications observed by a base station normally exhibit the following characteristics: (1) massively connected, (2) lightly loaded per packet, and (3) periodical or at least mostly predictable. The current design principals of communication...
IoT (Internet of Things) has attracted a lot of attention recently. IoT devices need to report their data or status to base stations at various frequencies. The IoT communications observed by a base station normally exhibit the following characteristics: (1) massively connected, (2) lightly loaded per packet, and (3) periodical or at least mostly predictable. The current design principals of communication...
Energy consumption data management center requires the gateway device to collect lots of energy data come from energy meters. However, these meters use different communication protocols other than TCP/IP protocol, so it can not be transmit these energy data across these energy data across TCP/IP networks. This problem is usually resolved by a data gateway in the energy management system. But the communication...
With the wide application of the network and the rapid expansion of its scale, the types of network devices deployed in one network are getting more and more as well. Each kind of devices has its own management method, so there is an urgent need for a unified network device management system. This paper designs an extensible network device management system, which is able to manage multi-type network...
Industrial automation requires hard real-time delivery of data that can be of periodic or sporadic in nature. It is challenging to ensure hard real-time delivery of periodic and sporadic data to a multi-hop away destination in a bandwidth constrained environment, such as wireless sensor networks. In this regard, research has been done for joint scheduling of periodic and sporadic data delivery using...
A good data transmission protocol should balance energy consumption, packets collision and some other factors well. The traditional layer protocol can't sufficiently meet the complex requirement of data transmission. So a new cross-layer communication protocol is proposed to solve the balance issue. In the algorithm, a directed spanning tree routing algorithm is discussed to resolve unnecessary energy...
Considering the on-board real-time performance and communication stability requirements for jet engine distritbuted control system, a novel communication protocol based on the serial port has been proposed in this paper. In our study, the communication data and check information has been designed in a specified packet framework in terms of minimizing communication packet length and maximizing communication...
Positive train control (PTC) provides a critical safety backup for train operations to protect against the consequences of human error. With the Rail Safety Improvement Act of 2008 mandating positive train control for most North American railroads, railroad community efforts are underway to develop an interoperable PTC communications system over a 220 MHz network. A robust, reliable, and interoperable...
Until recently, most oil pumping units (OPUs) have been using manual control in the oilfield. In this paper, network based automatic control is proposed for OPU management. This proposed network can sequentially realize automatic data sensing, automatic malfunction detection, remote data transmission, intelligent data organization and management, automatic malfunction warning, automatic stroke adjustment...
RS232 interfaces are widely used in data transmission, such as wireless meter reading, digital image transmission, industrial data collection, cell paging, fire-proof system, radio frequency identification card, local alarm system, and so on. Since the longest distance of cable transmission is only 15 meters, so it is important to develop a kind of RS232 interface used for wireless transmission. ZigBee...
The embedded wireless application for vehicle diagnosis is presented. The design uses an ATmega16 microcontroller as a master which controls the wireless RF transceiver module nRF905 to realize the wireless vehicle diagnosis function. The nRF905 module is used for signal transmission between diagnostic-tester and vehicle ECU. Diagnosis application software is also developed on the PC Windows platform...
In order to fulfill the requirement of maintenance platform applied to self-propelled guns fire control and measurement system, a communication scenario based on RS-485 serials communication network is designed. Data communication between one control terminal and multi-sampling terminals can be realized. The structure of this communication system is presented, the data process flow at sampling terminals,...
Taking the Solar Sail System combined by building construction and photovoltaic generation for example, this paper designs Solar Photovoltaic Remote Data Transmission System based on GPRS which completes data receiving, processing and evaluation indicators' calculation. The framework, composition and communication protocol of the active energy transmission were discussed in detail. The design of Data...
This article deals with the control of mobile embedded devices via wireless transceiver. The only way how to control the mobile devices such as robots, is to use a wireless data transfer. The possible wireless transceiver solution using the nRF24L01 transceiver by Nordic Semiconductor, which works in license-free worldwide 2.4 GHz ISM frequency band, is presented. Overview of this chip is included...
This paper designed and implemented an intelligent control system, in the system the Host PC is mainly responsible for the real-time control of individual lower computer to complete the parameter enactment and data display, storage, printing, etc; the lower single chip is to complete data collection, transmission and other real-time control tasks. This paper also introduced the serial communication...
In this article, a new approach to network intrusion detection system was considered. Conventional NIDS are based on software, which limits its detection performance. Now, it proposes to realize these functions by the programmable hardware. IXP2400 (Intel network processor) provides this function, which can increase performance even under hostile loads and will enable efficient intrusion detection...
In the field of embedded wireless data communication system, such as remote measurement and control, wireless meter reading, information appliances, wireless mouse or keyboard, it usually needs to design a small custom protocol to directly access the hardware. To solve this problem, designed an embedded wireless data communication protocol, Using special data frame format to solve unreliable data...
Wireless transmission module PTR6000M based on nRF24L01 module constitutes the wireless network with multi-way data synchronization testing in the rugged electromagnetic environment of the armored vehicles characteristic parameter testing. This program is successfully used in real vehicle testing, providing a reliable information source for running armored vehicles monitoring, security and optimal...
Aiming at the requirement of real-time monitoring of looms and limitations of subsistent monitor systems, a new monitor system based on ZigBee technology for looms was proposed, and then put forward its network structure. The CC2430 chip based on ZigBee technology from TI Company was applied to node controllers which function as data collection and transmission, management of monitoring network, fault...
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