艾讯公司全新推出分别由CAN埠转换为RS-232／422／485接口以及CAN端口转换为USB埠的工业级转换器iCON-101CS与iCON—101CU，提供更快速、简易地将CAN设备连接到USB埠或RS-232／422／485接口的Pc或程序装置的方式，使用1组9-pin male D—...艾讯公司全新推出分别由CAN埠转换为RS-232／422／485接口以及CAN端口转换为USB埠的工业级转换器iCON-101CS与iCON—101CU，提供更快速、简易地将CAN设备连接到USB埠或RS-232／422／485接口的Pc或程序装置的方式，使用1组9-pin male D—Sub（DB9）连结器的接口至CAN端口。展开更多
本文给出一种全新的、基于 CAN 总线驱动器 PCA82C250的分布式工业测控系统的网络组成。该系统克服了 RS-485的许多缺点,既具有 CAN 总线传输距离远、传输速率快、可靠性高等的特点,又具有等同于 RS-232的编程容易、接口简单的优势,可...本文给出一种全新的、基于 CAN 总线驱动器 PCA82C250的分布式工业测控系统的网络组成。该系统克服了 RS-485的许多缺点,既具有 CAN 总线传输距离远、传输速率快、可靠性高等的特点,又具有等同于 RS-232的编程容易、接口简单的优势,可以使工程师完全摆脱对 CAN 控制器82C200(或者 SJ1000)的接口和编程。实际应用表明,这是一种可以替代 RS-485,组成简易、实用的 CAN BUS 系统。展开更多
With principles of reliability, independence, practicality and economical effi- ciency, a set of intelligent fire alarm system based on AVRmega128 single chip microcomputer was designed to solve problems of fire alarm...With principles of reliability, independence, practicality and economical effi- ciency, a set of intelligent fire alarm system based on AVRmega128 single chip microcomputer was designed to solve problems of fire alarm system in many large- scale warehouses. Using advanced flame sensor, 485 bus communication, computer interactive software and related peripheral devices, this intelligent fire alarm system has functions of sound-light alarm and intelligent fire extinguishing. The human-com- puter interactive software was adopted for the remote control of the alarm main control panel through the 485 bus communication. This design of intelligent fire alarm system shows high reference and practical value to the development of intel- ligent alarm products with high integration and high reliability.展开更多
This paper introduces a hierarchical real-time environment for developing ship-bornefire-control system. Advanced computer networks are used to simulate the system with the requiredengagement scenario, including own-s...This paper introduces a hierarchical real-time environment for developing ship-bornefire-control system. Advanced computer networks are used to simulate the system with the requiredengagement scenario, including own-ship and parameters, and data processing and transmission,mission calculation, graphical supervision and gunnery ballistics outputting. The simulation systemis able to receive instruction from, or send information to the command-control center. Furthermore,the system can also be used to compare various designed schemes and analyze the accuracy andeffectiveness of the system.展开更多
Combined with the engineering requirement, a high-speed low-power ASIC design of HDLC controller based on RS-485 bus is given in this paper. On principle of Top-Down design, this ASIC design uses multi-techniques to r...Combined with the engineering requirement, a high-speed low-power ASIC design of HDLC controller based on RS-485 bus is given in this paper. On principle of Top-Down design, this ASIC design uses multi-techniques to reduce its die area and dynamic power, and overcomes some problems appeared frequently in application systems of the RS-485 circuits formed by the Standard Interface Chips. This design also improves the system reliability and reduces the system area.展开更多
This paper develops a novel distributed temperature measurement system based on DSP and DS18B20 digital thermometer. The real-time temperature of each node in the switchgear is obtained by several DS18B20s which are c...This paper develops a novel distributed temperature measurement system based on DSP and DS18B20 digital thermometer. The real-time temperature of each node in the switchgear is obtained by several DS18B20s which are connected on the 1-wire bus together. RS-485 master-slave communication protocol is used to centralize monitoring temperatures of several switchgear cabinets. The system also has the function of temperature alarm. The operation of simulation experiment has showed that the system is able to complete monitoring real-time temperatures in high voltage switchgear.展开更多
文摘艾讯公司全新推出分别由CAN埠转换为RS-232／422／485接口以及CAN端口转换为USB埠的工业级转换器iCON-101CS与iCON—101CU，提供更快速、简易地将CAN设备连接到USB埠或RS-232／422／485接口的Pc或程序装置的方式，使用1组9-pin male D—Sub（DB9）连结器的接口至CAN端口。
文摘本文给出一种全新的、基于 CAN 总线驱动器 PCA82C250的分布式工业测控系统的网络组成。该系统克服了 RS-485的许多缺点,既具有 CAN 总线传输距离远、传输速率快、可靠性高等的特点,又具有等同于 RS-232的编程容易、接口简单的优势,可以使工程师完全摆脱对 CAN 控制器82C200(或者 SJ1000)的接口和编程。实际应用表明,这是一种可以替代 RS-485,组成简易、实用的 CAN BUS 系统。
基金Supported by the National Natural Science Foundation of China(11275164)~~
文摘With principles of reliability, independence, practicality and economical effi- ciency, a set of intelligent fire alarm system based on AVRmega128 single chip microcomputer was designed to solve problems of fire alarm system in many large- scale warehouses. Using advanced flame sensor, 485 bus communication, computer interactive software and related peripheral devices, this intelligent fire alarm system has functions of sound-light alarm and intelligent fire extinguishing. The human-com- puter interactive software was adopted for the remote control of the alarm main control panel through the 485 bus communication. This design of intelligent fire alarm system shows high reference and practical value to the development of intel- ligent alarm products with high integration and high reliability.
文摘This paper introduces a hierarchical real-time environment for developing ship-bornefire-control system. Advanced computer networks are used to simulate the system with the requiredengagement scenario, including own-ship and parameters, and data processing and transmission,mission calculation, graphical supervision and gunnery ballistics outputting. The simulation systemis able to receive instruction from, or send information to the command-control center. Furthermore,the system can also be used to compare various designed schemes and analyze the accuracy andeffectiveness of the system.
文摘Combined with the engineering requirement, a high-speed low-power ASIC design of HDLC controller based on RS-485 bus is given in this paper. On principle of Top-Down design, this ASIC design uses multi-techniques to reduce its die area and dynamic power, and overcomes some problems appeared frequently in application systems of the RS-485 circuits formed by the Standard Interface Chips. This design also improves the system reliability and reduces the system area.
文摘This paper develops a novel distributed temperature measurement system based on DSP and DS18B20 digital thermometer. The real-time temperature of each node in the switchgear is obtained by several DS18B20s which are connected on the 1-wire bus together. RS-485 master-slave communication protocol is used to centralize monitoring temperatures of several switchgear cabinets. The system also has the function of temperature alarm. The operation of simulation experiment has showed that the system is able to complete monitoring real-time temperatures in high voltage switchgear.
