CAN Controller Research Articles

Communication System Design Based on TMS320F2407 with CAN Bus

In order to keep the communication fast and stable between a variety of control modules, the CAN bus communication system was designed in this paper. CAN bus communication system was designed as follow: the eCAN module of DSP chip TMS320F2407 was applied as CAN controller and the chip SN65HVD230 was applied as CAN transceiver, a variety of control modules was linked by the bus. For illustration, the chassis communication of a security robot is utilized to show how the CAN bus works. Empirical results show that the chassis communication of robot security is fast and stable with CAN bus. The CAN bus communication system designed in this paper can solve the unstable problem in the communication between control modules; it can be promoted to other control system.

Development of the Control System and Communication Network for Intelligent SF6 High Voltage Circuit-Breaker

This paper analyses the cause of the major faults of the SF6 high voltage circuit breaker, and then introduces a solution using an embedded control system. The control system consists of the controller for every breaker and a supervisor control system in the control center. Then a double-annular fiber field-bus communication network for the control system is introduced, of which the data link layer is implemented by the CAN controller. According to the operation state of every node and the fiber, the fiber communication module of every node can be configured to several different transmission modes. Due to the influence of temperature, the empirical formula of Beattie-Bridgman is used to calculate the pressure of SF6.

Node Design of Alarming System for Coal Gas Based on AT89C55WD and CAN Bus

According to the performance and features of AT89C55WD and CAN bus, a nod design method of alarming system for coal gas based on AT89C55WD and CAN bus is proposed in this paper. The hardware structure and the design process of software are discussed in detail. The hardware system consists of microprocessor AT89C55WD, CAN controller SJA1000 and CAN transceiver PCA82C250. Under the support of corresponding software, the gas density, temperature and humidity can be effectively monitored by this alarming system.

The Key Technology in the Parallel Control of Inverter

Flow equalization is one of the key technologies in the parallel control of inversion module. This paper presents the multi-inversion module parallel flow equalization system with TMS320LF2407A as the main control chip, which adopts the control strategy of “synchronous control of seizure and coincidence”, gains the data communication in the multi-module parallel connection and the multi-inversion module parallel flow equalization control with CAN controller embedded in TMS320LF2407A. It can be seen from the experimental data and experimental wave that it can effectively restrain the ring current and achieve the equipartition of load in the condition of resistive load and inductive load or capacitive load to achieve the data communication among the parallel inversion modules.

An Implementation of Remote Monitor Master Station Based on CANopen Protocol

For the development trends and defects of the Water Electrolysis Hydrogen Generation Station (WEHGS), the design of CAN bus distributed network control system based on CANopen protocol is presented. CANopen master characteristics have been analyzed, then the communication implementation of CANopen monitor msater protocol stack, which includes the hardware interface and software design of CAN controller based on the LPC2292, is described. The tested results show that CANopen monitor master meets the requirements of WEHGS.

Implementation of Access Control System Based on CAN Communication

CAN communication developed for communication between electric control devices in vehicle, was recently applied to automatic breaking devices, and can also be applied to field bus for production automation. Recently, field bus is introduced in engine control etc., for large ship. In this paper, cabin access control system is implemented, based on CAN communication. The cabin access control system based on CAN communication consists of access control server, embedded system based on ARM9, and micro-controller built-in CAN controller. The access control server can be able to manage overall access control system by accessing with manager. And embedded system adopted ARM9 processor transmits access information of RFID reader controller connected with CAN networks to server, also performs access control. The embedded system carry CAN frames to server, so it is used as gateway.

Design and Implementation of Hybrid Electric Vehicle Control System CAN Communication

Based on the vehicle CAN bus technology, with features of Hybrid Electric Vehicle (HEV) control network be concerned, CAN bus protocols of application layer suitable for HEV are developed in the paper. And control network is built based on multi-master CAN distributed control technology. Through CAN controller programming of DSP, supported by the corresponding external drive circuit, the motor controller nodes is connected with the vehicle CAN network. Finally the CAN Bus communication of HEV energy assembly control system is designed and realized. Experimental result indicates that the system works well with stable signal and strong anti-jamming ability, and the communication with HEV CAN bus is realized successfully.

CAN-based Platform for the Study and Experimentation on Networked Control Systems (NCS)

Networked control systems (NCS) are a recent trend in the research of distributed control systems with fieldbus networks such as CAN (Controller Network Area). This new approach differs from the traditional fieldbus systems in that the controller and the plant are physically separated and connected through an industrial network. Studies have been made to evaluate characteristics which are inherent to NCS design such as messages sampling time, information lost on the network and network delays between the sensors, actuators and controllers of the control system that can degrade its performance and destabilize the NCS. With the purpose of facilitating the research and highlighting the fundamental concepts in the area of NCS, a CAN-based platform has been developed. Focused on helping the investigation and experimentation on NCS on graduate courses, the platform can be used to perform tasks for NCS such as analysis, modeling, simulation and control. The architecture proposed for the platform is highly flexible allowing experiments to be conducted for several platform configurations, with different design parameters and controller algorithms. This paper describes our approach to designing this CAN-based NCS platform focusing on the hardware and software implementations and presenting the opportunities and benefits of its use to NCS. Experiments done with the platform confirm its functionality and effectiveness for NCS applications with the CAN protocol.

The Design of RS232 and CAN Protocol Converter Based on PIC MCU

CAN bus will be increasingly used in wide range of applications for its superiority, but it couldn’t communicate with computer directly. The article describes the design of RS232 and CAN bus protocol converter depending on PIC Microcontroller, which solves the problem that CAN networks can not directly communicate with PC. At present, single-chip microcomputer of 51 series with CAN controller SJA1000 are widely used in domestic. Considering cost and converter size, the paper will talk about PIC18F2580 with integrated CAN microcontroller designed for RS232 and CAN protocol converters to facilitate the direct communication between computers and CAN bus.

CAN2PCI: Placa con Interfaz al Bus CAN y PCI con Finalidad Docente

In this work the development of a board with interface to the CAN and PCI bus for its use in lab courses related to control networks, is presented. This board has high benefits and advantages and has been implemented for educational purposes due to its programming facility. The board has two independent CAN channels and it allows direct access to the registers of the CAN controller. The objective of the lab experiments is to study the control networks in the physical and link levels and to develop a middleware that performs the interface between these layers and the user application. The experiments done in one of the courses, which includes control networks, are briefly described. In these practical labs it is very important the use of a known hardware that allows programming the basic functions which directly operate with the CAN bus controller.

A New Design and Implementation of an Attendance Checking Node for Coal Mines

Abstract A novel design and implementation of an attendance checking node for coal mines based on the CAN bus is presented in this paper. Hardware circuits and programming methods for the attendance checking node are discussed, including the single-chip computer with CAN controller AT89C51CC03, the CAN bus transceiver TJA1050, the large capacity DataFlash memory, the real-time clock DS1302, the voice chip ISD2560 and the card-reading circuit in Wiegand format. All the extended hardware satisfies the requirements for intrinsically safe circuits (GB3836.4-2000) and intrinsically safe authentication promoted by the national explosion-proof institute. Further, the software programming methods for the CAN controller (AT89C51CC03) and the implementation of the CAN communications protocol are presented as well.

Selected design aspects in CAN‐bus system connected with signal propagation in real transmission lines

PurposeThe paper focuses on CAN‐bus based systems: a determination of the configuration parameters by analysis of their characteristic structure, topology conditions and transmission properties.Design/methodology/approachVoltage measurements were made in a test circuit of CAN‐bus together with calculations of adequate waveforms with the help of elaborated programs. The signal parameters transmitted in bus lines were logged and measured using digital oscilloscope.FindingsThe results allow some conclusions to be drawn about the correctness of assumptions in realising the configurationOriginality/valueThe results of the investigations have proved the possibilities of parameters calculation, required to choose relevant CAN controller configuration during the design.

An Object-Oriented framework for CAN protocol modeling and simulation

This paper presents an object-oriented software framework created with the aim of modeling and simulating distributed applications based on the CAN protocol. The created infrastructure consists of a modular simulator that allows describing all the system components, namely the interconnection bus and the distributed nodes. The object-oriented programming paradigm is used to simplify the modular implementation of the several protocol layers. The simulator was written in C++ and can be used as an executable specification to assist in the hardware implementation of a CAN controller.