The CAN-BUS control system of the ISUZU garbage compactor truck is a control system based on the Controller Area Network, or CAN-BUS technology. CAN-BUS is a standard for truck network communication that enables information transmission and data exchange between multiple controllers.
The ISUZU garbage rear loader uses the CAN-BUS control system technology to connect the various controllers on the ISUZU garbage rear loader together and transmit and communicate data through the CAN-BUS bus. This allows control and monitoring of the various functional components of the garbage compactor truck, such as the compression device, unloading device, joystick, electronic display, etc. Through the CAN-BUS control system, remote monitoring and fault diagnosis of the ISUZU waste garbage compactor truck can be achieved, improving the operating efficiency and safety of the garbage truck.
A. Working principle of CAN-BUS:
The sensors throughout the vehicle body need to monitor the vehicle status in real time and send this information to the corresponding control unit. For example, information from units such as the air pressure sensor, engine temperature sensor, accelerator pedal position sensor, and engine speed sensor reaches the transmitter control unit, which sends corresponding instructions to control the amount of fuel injected by the injector after analysis and processing. The control units on the truck do not work independently, they often need to share information to work better together. This leads to the problem of information transmission.
There are two main ways for the communication between control units:
1. Each piece of information is exchanged through its own independent data line. For example, if there are 5 signals to be transmitted between two control units, 5 independent data lines are required. The more information, the more cables are required, and the more pins are required between the control units.
2. All information between control units is exchanged through two data lines. In this way, all information, regardless of capacity, can be transmitted through these two lines. This data line is also called CAN data bus.
The CAN bus uses a broadcast communication method without the participation of the host.
In other words, all control units can "hear" what other units are "saying" without distinction, and cannot send information to a specific unit alone-unless specially set.
B. CAN bus vs OBD:
OBD stands for On-board Diagnostics, which is a specification developed by Europe and the United States for monitoring automobile emission-related systems (such as engines and transmissions). OBD defines the diagnostic services and data transmission formats that emission-related systems must support, and sets up a fault mechanism to facilitate recording fault information and alarming the owner.
The data transmission of OBD requires the support of the underlying data link. This underlying data link can be a CAN line or other lines such as K line. CAN bus is the underlying data link for the communication of the in-vehicle controller area network, and OBD is a diagnostic system based on CAN bus for monitoring the vehicle status. At present, the OBD interface of most cars is CAN bus.
C. What are the advantages of CAN bus?
The particularity of the vehicle environment puts high demands on the usability, reliability and cost of the communication system. The advantages of CAN bus just meet the application requirements of the vehicle domain network.
1. Simple and easy to use, low cost As mentioned above, through two CAN data buses, information transmission between all control units on the vehicle can be realized without complex analog signal lines. This greatly reduces the weight of the vehicle body and saves the cost of laying complex cables, thereby reducing costs.
2. Centralized management CAN bus communicates with all control units in the network through one entrance to achieve centralized diagnosis, data recording and configuration.
3. Robust and reliable The CAN data bus is very rugged and durable, and has strong resistance to electrical and electromagnetic interference. Therefore, the CAN bus can be installed on various types of vehicles, and even in vehicle applications with strict safety requirements, the CAN bus can perform its communication tasks.
4. Efficient operation In the CAN bus system, the priority of communication is determined by the ID. The highest priority data can be sent to the bus immediately without interfering with other data. This ensures the efficient operation of the network system.
5. Easy to deploy As a proven, industry-wide bus standard, the CAN bus is supported by a mature ecosystem and can be easily installed in various vehicles.
