CAN Controller Research Articles

Design and Simulation of Controller Area Network Module Using Verilog HDL

Abstract: Controller Area Network or CAN protocol is a method of communication between various electronic devices. It has significant use in the industry of automobiles. It defines a standard for efficient and reliable communication between sensor, actuator, controller, and other nodes in real-time applications. This provides a mechanism which is incorporated in the hardware and the software by which different electronic modules can communicate with each other using a common cable. CAN protocol is a message-based protocol, not an address-based protocol. All nodes in the system receive every message transmitted on the bus (and will acknowledge if the message was properly received). It is up to each node in the system to decide whether the message received should be immediately discarded or kept to be processed. The main aim is to design, development, and implementation of a CAN module using Verilog HDL. The intent is to show that the designed CAN module can replace a standalone CAN controller which occupies extra space in the system. Also implementing the CAN with the help of custom RAM is aimed at removing the need for FPGA specific RAM. The proposed design of CAN module is an integration of lower-level modules. The desired Verilog implementation of CAN module can help in simulating different systems at the design level instead of using physical ICs. The design includes a simple scheme that aims in reduction of circuit complexity and chances of hardware failure without requiring any extra logic circuitry.

Intelligent Control System of Unmanned Vehicle Based on CAN Controller

In order to enable the driverless vehicle formation controller to automatically control the driving of the fleet, an intelligent driverless vehicle control system based on the CAN controller is proposed. Expansion convolution of different expansion rates is used to obtain multi-scale target information and to fuse the feature information at different scales during upsampling to enrich the semantic information. Finally, the driverless CAN bus communication platform was established, the driverless monitoring interface was developed, and the software program was written; experiments on the steering control, speed control, voltage, current, speed, and angular speed acquisition, respectively, were performed. The experimental results show that the average semantic segmentation accuracy of the obstacles in concentrated vehicles, pedestrians, and bicycles reached 84.6%, and the detection and segmentation accuracy of the models was good. Therefore, the unmanned intelligent vehicle control system designed in this paper can meet the performance requirements of the vehicle control. No matter whether the given desired path is a straight line or a curve, the unmanned car can complete the path tracking control quickly, stably, and accurately.

Examining the Thermal Stress Effect of Electromagnetic Susceptibility of Automotive CAN Controller

CAN controllers are responsible for the processing and transmission of CAN signals, which render them indispensable electronic devices in automotive cyber-physical systems. SJA1000T is one of the most common CAN communication chips which can be implemented through the use of bulk silicon CMOS technology. A susceptibility test platform is built based on the direct power injection method following IEC62132-4 to explore the electromagnetic susceptibility characteristics and the effects of thermal stress on CAN controller. Test results show that the susceptibility threshold curve is corresponded directly to frequency and temperature. The influence of thermal stress on the input and output characteristics of MOSFET is simulated and analyzed to verify the anti-interference ability and reduced reliability of the chip in a high temperature environment.

FPGA Based Engine Control Module for Fuel Injection System

Fuel injection system is an indispensible part of the present day automobiles. The depletion of the fuels along with continuous surge in the fuel prices has made it imperative to use fuel economically and restricting the wastage to a minimum. Contrary to the carburetor, using predefined amount of fuel irrespective of the environment, Fuel Injection System uses just the required amount of fuel based on the operating conditions as sensed by the Engine Control Module (ECM). Numerous parameters are required to be sensed by the ECM to achieve optimum efficiency of the engine. To handle the processing of such large number of parameters, a robust architecture is required. This paper presents the design and implementation of ECM utilized in Electronic Fuel Injection (EFI) system on a Field Programmable Gate Array. The ECM architecture discussed in the proposed system is computationally efficient enough to fulfill ever-increasing functionalities of the ECM. The main objective of this research is to sense the parameters required for the ECM analysis and to interpret and analyze this data and accordingly control the solenoid (actuator). The CAN controller is also deployed in an FPGA to facilitate the communication between ECM and Human Machine Interface (HMI) to indicate the parameters sensed by the sensor on the LCD. The target device (FPGA) for this work is Xilinx Spartan 3E and the design tool is Xilinx ISE 14.7 with the ECM and CAN controller being modeled in Verilog Hardware Description Language (HDL).

Design and Implementation of Vehicle Data real-time Acquisition System

Different drivers produce different characteristics of driving data, for different requirements of the vehicle reliability, safety and comfort, the driving style is analyzed according to the driving data collected by the vehicle. This paper presents and designs a platform of vehicle operation data real-time acquisition based on UDS diagnosis. The platform uses MCU and CAN controller to build communication modules, and with PC to control data collection, display and preservation. The overall design process is systematically elaborated in this paper, including the design method of vehicle embedded data acquisition terminal and PC monitoring terminal, focusing on the design of platform communication protocol. The test results show that the platform satisfies general vehicle data acquisition requirements.

An approach of developing low cost ARM based CNC systems by controlling CAN drives

Nowadays, there is a big demand on using small sized CNC machine tools, which have low price tag, wide range of implementations, low manufacturing costs and can be used for educational purposes. These machines can achieve casual manufacturing routines, like milling and drilling in applications, where there is no need for high speed performances and super quality of products. In this work, we proposed a model of CNC for these machines and analysed its components and efficiency. The model consists of three main layers: CNC system (application layer), ARM based microcomputer as CAN master and controller (connecting layer) and Servo-Drive Step Motors (actuating layer).

The Design of Remote and Digital Monitoring System of Public Bus

Based To solve the problem of incomplete monitoring information,single function and low extensibility of public bus monitoring system,a remote digital monitoring system of public bus based on embedded platform is designed. Bus stop announcer,CAN controller,satisfaction evaluator and other vehicle electronic equipment are integrated into vehicle terminal,which collect,transmit and feedback real time data such as the location of bus,bus station information,running state parameters,satisfaction and vehicle scheduling information. The remote monitoring center receives the data and generates the visualizations webpage at the same time. Bus remote monitoring system is established,and the operation efficiency and security of public bus is improved.After large amounts of running and tests,result of the test indicates the monitoring data received from this system is reliable and stabilized.

Sorting Control System Design of New Materials Sorter Based on FPGA

A new sorting control system in field programmable gate array (FPGA) — the core of control — was proposed because the previous one couldn’t meet the requirements of the multi-channel and high yield. It focused on designs of both hardware circuit and FPGA programming module. In the system, the accurate lossless delay of multiple signals was applied by using of RAM and its control module in FPGA. The sorting signals were generated based on the parallel execution characteristics of FPGA program. Real-time communication was realized between CAN controller of SPI and human-computer interface. A large number of experiments were done to test the proposed system. Results showed that the sorting control system could process multi-channel and higher-yield signals significantly. And the materials sorter was improved both in detectable level and yield.

Effective CAN Controller Design for Highly Secured Applications

Effective CAN Controller Design for Highly Secured Applications

The Research of CAN Bus in the Car Intelligent Lighting Control System

As one of the most important subsystem of automotive control systems, the design of automotive lighting control system is essential. In this article, the automotive intelligent headlight control system based on CAN bus was introduced, and the system hardware structure and software design processes was given. Adopted MC9S08DZ60 microcontroller which integrated the CAN controller as the master chip. While taking advantage of the photoelectric sensor to analyze road lighting conditions, according to light changes in the external environment to achieve automatic dimmer. The circuit has characteristics of simple hardware design, high reliability and real-time. And provided a theoretical basis for the Hyundai Motor intelligent control system.

The Design of a Low Cost CANopen Slave Node Based on STC90C514RD

CANopen is a kind of higher layer protocol based on CAN, and it is widely used in industrial automation field, especially in distributed motion control systems. The paper presents an approach of realizing CANopen slave node. Microcontroller STC90C514RD is used as a core chip to design the control system; the design adopts CTM1050 as the CAN transceiver and uses SJA1000 as the CAN controller. And the system consists of a CANopen slave node, input module and output module. MicroCANopen, which is an open source protocol stack of CANopen, is transplanted to main controller so that the function of CANopen could be implemented. Moreover the experimental platform is built to test the design of the system. The results prove that the design is feasible and valid.

Multi-Channel Data Acquisition and CAN Communication System Based on Single-Chip Microcomputer

Aimed at the problem that the traditional data acquisition system design with low efficiency and high cost. It is proposed that the C8051F040 microcontroller is based on the integrated A/D converter and CAN controller; utilize dynamic control simulation input quantity into the built-in A/D converter, process and store the data through the micro-processing unit, and use integrated CAN controller to transmit the data. From schematics design to the boards development, we have achieved the functions that acquisition of multi-channel data combined with CAN network communication through hardware and software debugging. The design of this product is small, powerful and wide used. It has good application and development prospects.

The Application of CAN Bus Microcontroller MC9S08DZ60 in Automotive Electronic Control Unit

Take the microcontroller MC9S08DZ60 which integrated CAN controller for example, the design of automotive electronic control unit was introduced, meanwhile shown the hardware structure and software design processes. This circuit has characteristics of simple hardware, low cost, high reliability, real-time. It has provided a scientific basis for the development of the CAN communication electronic control unit based on MC9S08DZ60 microprocessor.

Design of embedded Ethernet-CAN communication card based on FPGA

In order to realize the CAN bus communication with PC and remote monitoring,a design method of the embedded Ethernet-CAN communication transform card based on FPGA was proposed.The design chose the embedded soft processors Nios Ⅱ in FPGA as the main control chip,MCP2515 as the CAN bus controller and 88E1111 as the Ethernet PHY chip.A system hardware model was built with the SOPC(System-On-a-Programmable-Chip) technology,and the CAN controller,Ethernet initialization and the Ethernet-CAN conversion process were completed in the Nios Ⅱ IDE(Integrated Development Environment).The experimental results show that the design completely meets the requirements of the Ethernet and CAN bus communication.

Application of CAN Bus in Modern Automobile Network System

As a field bus, CAN bus has been increasingly used in automotive electronic system.In this paper,a vehicle internal network architecture based on CAN bus system was introduced. Utilized the high-performance PIC18F258 MCU with CAN controller to design a CAN bus interface circuit, meanwhile shown the structure of major hardware and software design processes. The circuit has several advantages such as simple hardware design, high reliability,and powerful real-time.

Application of TMS320LF2407A and CAN Bus Technology in Flow Control of Inverter

As parallel operation of several single inverter modules, the alternating voltage outputted by the single inverter module should guarantee same frequency, same phase and equiamplitude. Otherwise, circumfluence will be caused in the single inverter module. The circumfluence not ecreases output capacity of the system but destroy the inverter in serious condition. So, restraint circulation is the key technology of inverter modules in parallel control. Based on the analysis of inverter modules in parallel control, this paper designs the parallel current sharing system of multi-inverter modules with TMS320LF2407A as the main hip, adopts the control strategy of “direct current sharing”, and achieves the data communication in multi-modules allel connection as well as the effects of multi-inverter odules in parallel current sharing control with CAN controller embedded in TMS320LF2407A.

CAN-Based Parallel Guidance System for Agricultural Machinery

The objective of this study was to develop a CAN-based parallel guidance system for small agricultural machinery. The system consisted of field computer, light bar and DGPS receiver. The field computer was developed using PC/104 CPU module, running on the embedded real-time operation system customized by a special development tool. Single chip and CAN controller were selected for guidance light bar design, which used a row of indicator LEDs to guide drivers. Field computer and guidance light bar communicated with each other based on CAN bus. The guidance software running on the field computer was designed in object-oriented manner by integrating embedded GIS development kit. In field test, the average of offline distance was 0.452 meter. The lowest percentage overlap and skip were 3.64% and 3.82% respectively. Results showed that this kind of guidance system was suitable for small-size machinery and could provide effective guidance aid for field operation.

A low-power, radiation-hardened, CAN-interface for system-on-chip space applications

The CAN bus standard is widely used in the space industry to interconnect subsystems. Its main advantage is the performance in terms of reliability, due to its sophisticated error handling mechanisms and electrical noise robustness. This paper presents a novel approach to the design of a CAN interface (including the CAN Controller—data link layer—and the CANopen—application layer) optimized for radiation-hardness, power consumption and other qualities desired for space systems electronics. The CAN interface was fabricated on a commercial 0.25 μm technology, integrated in a SoC with analog and digital subsystems. Tests have shown radiation hardness above 1 Mrad and no SEEs up to 57 MeV, with 3 mW power consumption, and a −55 to +125 °C operating temperature range, features greatly optimized in comparison to current implementations in the space industry.

An Implementation of CANopen at Water Electrolysis Hydrogen Generation Station

In this paper, the structure and characteristic of CANopen protocol is analyzed, and the implementation in a Water Electrolysis Hydrogen Generation Station (WEHGS) is described in detail, which includes the hardware interface design of CAN controller based on the ARM7 of LPC2292, and the software implementation. Finally, the practice proved that used CANopen in WEHGS is a good way with real time action, more reliability and low cost.

Design and Implementation of Group2 only Slave Node Based on DeviceNet

Referred to the protocol specification of DeviceNet, the hardware structure was set up by analysis of the physical layer and data link layer. Then it emphasized the software implementation procedure of the communication between master and slave from the view of application layer. With the software and hardware design method, a group 2 only communication node based on DeviceNet was designed through the platform of CAN controller SJA1000. Finally both IXXAT Corporation’s DNSDT protocol analysis software and RockWell’s master device were used to test the slave node. And the experimental data is detailed to verify that this slave node can fully meet the requirements specification of DeviceNet.