ECU embedded software refreshing and programming downloading system

Abstract

The invention relates to an ECU embedded software refreshing and programming downloading system. The system comprises a communication interface board, and an independent board card power supply moduleis arranged on the communication interface board; the independent board card power supply module is connected with a battery, an MCU core unit and a power supply hot plug control unit. The communication interface board is further provided with a communication interface, an external power supply interface, an input and output module interface and a rotary dial switch, and the MCU core unit is connected with the communication interface, the external power supply interface, the input and output module interface, the power supply hot plug control unit and the rotary dial switch. According to theinvention, the hot plug power supply control technology is adopted, thereby achieving the safe hot plug of the module and guaranteeing the normal use of the system; circuits are integrated in one circuit board, and the multi-layer PCB design is adopted, so the anti-interference performance of the device is enhanced, and the structure is simple; the system can be used in an internal expansion system and an external expansion system, and the communication conversion between a main controller and an input and output module is realized.

Description

technical field [0001] The invention relates to the technical field of communication devices, in particular to a system for refreshing and downloading programming of ECU embedded software. Background technique [0002] There are generally two ways to collect signals. One is to connect the field equipment to the input and output channels of the controller through hard contacts. This method is relatively direct, but the cost is high and the reliability is low; the other way is the field equipment. The signal is directly sent to the controller through serial communication, which is low in cost and high in reliability, but requires higher communication functions between the device and the controller. At present, as field devices are becoming more and more intelligent, in order to save costs and improve reliability, more and more signals are not sent through hard contacts, but are required to be sent to the controller through serial communication; in addition, due to some special...

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Problems solved by technology

[0002] There are generally two ways to collect signals. One is to connect the field equipment to the input and output channels of the controller through hard contacts. This method is relatively direct, but the cost is high and the reliability is low; the other way is the field equipment. The signal is directly sent to the controller through serial communication. This method is low in cost and high in reliability, but requires high communication functions between the device and the controller.

At present, as field devices are becoming more and more intelligent, in order to save costs and improve reliability, more and more signals are not sent through hard contacts, but are required to be sent to the controller through serial communication; in addition, due to some special signals, The controller cannot collect, and it must be collected by other devices and then sent to the controller through the serial port

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