Wireless BMS Controller RF Power Adjustment for Communication Failures
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Solution Overview
Problem
Vehicle sensor systems face challenges in managing temporary communication failures between wireless battery management systems (BMS) and module measurement systems (MMS), often leading to unnecessary safe operating states, which can disrupt vehicle operation.
Innovation Solution
A wireless network controller (WNC) in the BMS determines background RF power levels to select and perform corrective actions, such as switching communication channels or adjusting RF power, to restore communication before a fault-tolerant time interval expires, thereby avoiding safe operating states.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If communication failure is detected in wireless BMS, then vehicle safety is protected by entering safe operating state, but vehicle operation is disrupted unnecessarily when failure is temporary
Solution Approach 1:
The system performs preliminary actions by detecting communication failures early and attempting corrective actions (channel switching, RF power adjustment) before the fault-tolerant time interval expires, preventing unnecessary safe operating states and maintaining vehicle operation continuity
Solution Approach 2:
The system implements feedback by continuously monitoring communication status between WNC and MMS, detecting failures, evaluating background RF power levels, and adjusting communication parameters dynamically to restore communication and avoid unnecessary safe operating states
2Productivity
If corrective actions are attempted to resolve communication failure, then vehicle operation continuity is maintained, but system complexity increases
Solution Approach 1:
The system applies dynamics by making communication parameters (channel selection, RF power level) adjustable and changeable in real-time based on communication status, allowing the system to adapt to varying conditions without permanent structural complexity
Solution Approach 2:
The system changes parameters (communication channel frequency, RF power transmission level) to resolve communication failures, maintaining vehicle operation continuity through parameter adjustment rather than system reconfiguration
Data Source
AI summary
Methods, apparatuses, systems, devices, and non-transitory for resolving a failure in communication within a wireless battery management system (BMS) of a vehicle are disclosed. In a particular embodiment, a wireless network controller (WNC) of a wireless BMS determines that there is a failure in communication between the WNC and one or more module measurement systems (MMS). The WNC also determines a background radio frequency (RF) power level of a communication channel between the WNC and the one or more MMS and based on the determined background RF power level, selects one or more actions to perform in an attempt to correct the failure in communication between the WNC and the one or more MMS. In this particular embodiment, the WNC performs the selected one or more actions in an attempt to correct the failure in communication.