Communication unit power-off control module

Abstract

The invention discloses a power-off control module for a communication unit of a vehicle-mounted communication terminal of an intelligent vehicle, comprising: a main control unit, which is powered by a second power supply unit, and if it receives a communication unit failure signal and executes a communication unit failure processing program If the communication unit still fails, it outputs a power-off command to the first delay circuit; the first delay circuit is respectively connected to the second delay circuit and the first power supply unit, which is suitable for enabling the first delay after the first preset delay. The output of a power supply unit is turned off, which enables the second delay circuit to start the second preset delay; the second delay circuit, which is connected to the first power supply unit and the vehicle power supply, is suitable for performing the second preset delay Enable the output of the first power supply unit to be turned on; the vehicle power supply is suitable for turning on the first power supply unit directly or through the second delay circuit; the first power supply unit is suitable for supplying power to the second power supply unit and the communication unit. The invention can realize the automatic recovery function of the short-term power failure of the communication unit of the vehicle communication terminal, and can significantly reduce the production cost compared with the prior art.

Description

technical field [0001] The invention relates to the field of smart cars, in particular to a power-off control module for a communication unit of a vehicle-mounted communication terminal (TBOX) of a smart car. Background technique [0002] Today in the 21st century, with the rapid development of communication technology, cars, which are isolated islands of information, have gradually established connections with the outside world. According to the requirements of the national standard "Technical Specifications for Electric Vehicle Remote Service and Management System" (GB / T32960), vehicles (especially smart cars) need to actively upload data to the vehicle network platform. [0003] Therefore, installing a vehicle communication terminal (TBOX) has become an increasingly urgent demand. The connected car installed with the on-board TBOX has functions such as information interaction and vehicle control, and has the characteristics of never-ending power supply. As the communica...

AI Technical Summary

Problems solved by technology

As the communication unit at the core of TBOX communication, long-term operation will inevitably lead to crashes and other failures that cannot be self-recovered. However, the vehicle-mounted TBOX is hidden according to its location, and it is inconvenient to disassemble. It cannot be manually powered off. The power of the communication unit can be turned off. a must

The existing solution is to turn off the power supply of the communication module through a separate power supply chip or through a MOSFET switch, and the implementation cost of the existing solution is relatively high

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