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Vehicle Controllers and Communication
Published in Iqbal Husain, Electric and Hybrid Vehicles, 2021
The components and systems in a vehicle are linked together through a system of networked communication. The command signals, the sensor feedback signals and the system output variables interconnect the vehicle driver, the supervisory controller and the subsystems, and components are transferred from one unit to another through the automotive communication network. The type of networked communication used in automobiles is known as CAN. CAN is a special type of local area network (LAN) that uses a serial multi-master communication protocol. CAN supports distributed real-time control with a very high level of security, and a communication rate of up to 1 Mbps. The CAN bus is ideally suitable for applications operating in noisy and harsh environments, such as in the automotive and other industrial fields that require reliable communication or multiplexed wiring.
ESD Protection in Automotive Integrated Circuit Applications
Published in Juin J. Liou, Krzysztof Iniewski, Electrostatic Discharge Protection, 2017
Javier A. Salcedo, Jean-Jacques Hajjar
CAN bus is a vehicle bus standard designed to allow microcontrollers and devices to communicate with each other within a vehicle without a host computer. It is a message-based protocol, designed specifically for automotive applications but now also used in other areas such as aerospace, maritime, industrial automation, and medical equipment. CAN has become a multi-master serial bus standard for connecting ECUs, also known as nodes. Two or more nodes are required on the CAN to communicate [21]. The complexity of the node can range from a simple I/O device up to an embedded computer with a CAN interface and sophisticated software. Figures 6.8 and 6.9 show example schematics for the CANH and CANL, respectively. The protection clamp for these pins follow a similar concept to the one discussed in the previous section in connection with the LIN interface.
Internet of Things-Compliant Platforms for Inter-Networking Metamaterials
Published in Christos Liaskos, The Internet of Materials, 2020
CAN (also referred to as CANbus or CAN bus) is a network used in many every-day products consisting of multiple micro-controllers that need to communicate with each other. CAN provides a safe communication channel to exchange up to 8 bytes between several network nodes. Additional network functionality like which node talks to which others, when to trigger transmit messages, how to transmit data longer than 8 bytes - all of these functions are specified in so-called higher-layer protocols (in network terms, CAN is a layer 2 implementation - higher layers are implemented in software). CAN supports a bus topology that requires only to cable to operate.
Time-of-flight imaging for assessing soil deformations and improving forestry vehicle tracking accuracy
Published in International Journal of Forest Engineering, 2018
In addition to the Kinect measurements, the forwarder’s CAN bus data with GNSS measurements were collected using the Ponsse Opti7 integrated on-board computer system. CAN bus is a communication standard for linking different devices together. It is used widely in off-road vehicles for transferring sensor measurements and controlling actuators. The forwarder speed, calculated from the power transmission, was used from the CAN bus data set. The sampling time of the CAN bus was 20 ms. The forwarder stopped before each test track, allowing time for the synchronization of the Kinect images and the CAN bus measurements.