Software Upgrade System of ECU Using Bluetooth

摘要

A software upgrade system using Bluetooth communication is provided to improve the convenience of after-sales service at a small outlay by installing an upgrade electronic unit, capable of Bluetooth communication, at a communication line in a vehicle, respectively granting CAN(Controller Area Network) IDs to ECUs(Electronic Control Units), and upgrading their software through a PC by wireless, regardless of their types. A software upgrade system using Bluetooth communication consists of a plurality of ECUs(30a-30n), a PC(10), a Bluetooth transceiver(12), an upgrade electronic unit(20), and a CAN communication line(40). The ECUs, installed in a vehicle, have their respective software. The PC stores software to upgrade. The Bluetooth transceiver, connected with the PC through the CAN communication line, receives software. The upgrade electronic unit, composed of a Bluetooth module(22) and a CPU(24), is connected to the CAN communication line. The Bluetooth module receives software through Bluetooth communication with the Bluetooth transceiver. The CPU executes communication with the ECUs. The CAN communication line connects the upgrade electronic unit with the ECUs, and receives programs and data associated with software upgrade.