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CANBUS Version

Docking Station built-in CANBUS protocol
CANBUS*1
RS232*1
GPIO*4
ACC*1
USB Type-A*1
DC*1
CANBUS-Version
01

It’s a common sight that rugged vehicle-mounted tablets with extended interfaces are employed in many industries to enhance working efficiency and realize some specific functions. How to make ensure that the tablets have compatible interfaces with the connected devices and practically meets the specific application requirements has become a concern of buyers. This article will introduce several common extended interfaces of vehicle-mounted rugged tablet to help you better understand the the features of them and choose the most ideal solution.
· CANBus
CANBus interface is a communication interface based on controller area network technology, which is used to connect various electronic control unit (ECU) in automobiles and realize the data exchange and communication among them.
Through the CANBus interface, the vehicle-mounted tablet can be connected to the vehicle’s CAN network to obtain the vehicle status information(such as vehicle speed, engine speed, throttle position, etc.) and provide them for drivers in real time. The vehicle-mounted tablet can also send control instructions to the vehicle system through the CANBus interface to realize intelligent control functions, such as automatic parking and remote control. It is worth noting that before connecting the CANBus interfaces, it is necessary to ensure the compatibility between the interface and the vehicle CAN network to avoid communication failure or data loss.
· RS232
RS232 interface is a standard interface for serial communication between devices, mainly used to connect data terminal equipment (DTE) and data communication equipment (DCE) to realize communication, and is known for its simplicity and wide compatibility. However, the maximun transmission distance is about 15 meters, and the transmission rate is relatively low. The maximum transmission rate is usually 20Kbps.
· GPIO
GPIO is a set of pins, which can be configured in input mode or output mode. When the GPIO pin is in the input mode, it can receive signals from sensors (such as temperature, humidity, illumination, etc.), and convert these signals into digital signals for tablet processing. When the GPIO pin is in the output mode, it can send control signals to actuators (such as motors and LED lights) to achieve precise controls. GPIO interface can also be used as the physical layer interface of other communication protocols (such as I2C, SPI, etc.), and complex communication functions can be realized through extended circuits.