Bidirectional Redundancy Power Conversion for Communication Faults
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Solution Overview
Problem
Existing redundancy power systems in autonomous vehicles fail to perform normal redundancy power conversion when errors occur in the local communication network, leading to potential safety hazards due to inadequate power supply to critical components.
Innovation Solution
A method and system that convert high voltage into two different low voltages (12V and 24V) and include a bidirectional converter to detect communication line and component normalcy, switching to alternate voltage supply if thresholds are breached, ensuring continuous power delivery to electrical loads.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a local communication network is used to manage redundancy power conversion, then power distribution control is improved, but system reliability deteriorates when communication errors occur
Solution Approach 1:
The bidirectional converter autonomously monitors communication line status and voltage states without requiring external control, detecting faults and switching voltage sources independently when communication errors occur, making the system self-protecting against communication failures
Solution Approach 2:
The system continuously monitors communication line status and voltage states, using this feedback information to determine when to switch between normal and redundancy power conversion modes, ensuring reliable operation despite communication network errors
2Device complexity
If redundancy power conversion is disabled during communication errors, then system complexity is reduced, but power supply reliability deteriorates
Solution Approach 1:
The redundancy power conversion system dynamically adjusts its operation based on communication line status, enabling automatic switching between normal and redundancy modes without requiring complex manual intervention or system reconfiguration
Solution Approach 2:
The bidirectional converter is pre-configured with the capability to perform redundancy power conversion, and this capability is automatically activated when communication errors are detected, avoiding the need for complex post-error system reconfiguration
3Reliability
If continuous monitoring of communication lines and voltage states is implemented, then power supply reliability is improved, but device complexity increases
Solution Approach 1:
The monitoring functions for communication line status and voltage states are merged into the bidirectional converter's single control unit, eliminating the need for separate monitoring devices and reducing overall system complexity while maintaining continuous surveillance
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Ensures stable power supply to electrical loads even in communication errors by dynamically switching voltages, enhancing safety and reliability of autonomous vehicle operations.
Implementation Method 1
converting a high voltage into a low voltage of 12V or 24V and outputting the converted low voltage
Data Source
AI summary
A redundancy power conversion method includes converting a high voltage into a first low voltage or a second low voltage and supplying the converted first and second low voltages to at least two electrical loads that use the first or second low voltages as driving power, performing voltage conversion between the first and second low voltages in one direction according to a conversion request, determining whether a transmission process of the conversion request is normal, detecting a voltage state of the first or second low voltage converted, determining whether the detected voltage state of the first low voltage or the second low voltage is equal to or less than a preset threshold value, and performing an emergency supply of converting and supplying the other low voltage to at least two electrical loads that use a low voltage having a voltage state deviated from a preset threshold value as driving power.