Today, I bring you the design of a CAN bus controller based on FPGA. Due to the lengthy content, it is divided into three parts. Today, I present the third part, followed by the next one, which covers the program simulation and testing, as well as a summary. Without further ado, let’s get started. I … Read more
Editor ▎ Wang Yan Review ▎Yu Yongchu Jinfen Mall Popular Book Rankings ☞ Jinfen’s Favorite Book Rankings ☞ Mechanical Book Rankings ☞ Production Management Rankings ☞ Design Software Rankings How to Quickly Publish Articles in the ‘Automotive Engineer’ Magazine October 2022 Automotive Production and Sales: Continued Year-on-Year Growth, New Energy Vehicles Set New Historical Highs … Read more
In bus systems, both RS-485 and CAN-bus are commonly used buses, each with unique characteristics and application scenarios, widely applied. Today, let’s discuss their differences. 1. What is RS-485? RS-485 is a serial communication protocol that has been around since the mid-1980s, originally defined for industrial market applications. It uses differential signaling with negative logic, … Read more
When the CAN bus malfunctions or data transmission is abnormal, various strange fault phenomena often occur, such as abnormal dashboard displays, inability to start the vehicle, failure to turn off after starting, decreased vehicle performance, and loss of certain electronic control system functions. This is because relevant data or information is transmitted through the CAN … Read more
4. Short Circuit of CAN L to Ground When a short circuit occurs between CAN L and ground, due to the fault tolerance characteristics of the CAN bus, the entire CAN network may be unable to communicate or generate related fault codes. However, for certain vehicle models, such as Haima, the fault tolerance characteristics of … Read more
Before performing CAN bus communication, it is important to ensure proper bus configuration, such as termination resistors. They are crucial components that affect bus communication. Below, we will analyze the effects of not using termination resistors solely from the perspective of signal amplitude and time constant, without considering signal integrity. Termination Resistor Requirements According to … Read more
Detection Methods for CAN Bus ① Before checking the data bus system, ensure that all electronic control units (ECUs) connected to the data bus have no functional faults. Functional faults refer to those that do not directly affect the data bus system but will impact the functional process of a certain system. For example, if … Read more
1. What is CAN Bus? CAN stands for Controller Area Network, developed by the German company BOSCH, known for its research and production of automotive electronic products, and has ultimately become an international standard (ISO 11898). It is one of the most widely used field buses internationally. In North America and Western Europe, the CAN … Read more
Authors: Kuang Xiaojun, Tang Xiangjiao, Li Hongbo, Wang Yong, Chang Sheng 1. Introduction to Power Management Systems The automotive power management system can monitor the state of the battery and manage the load to calculate and evaluate the starting performance of the battery, thereby determining the current state of the battery and predicting the time … Read more
With the continuous promotion of national policies, electric vehicle charging stations are becoming increasingly popular, and people’s demands for these stations are also rising. Car owners not only want to know which stations are closest to them and which ones are currently available for charging, but they also need to know the current charging status … Read more