TPL Transceiver Calibration for Power-Robustness Balance
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Solution Overview
Problem
Transformer physical layer (TPL) transceivers in battery management systems (BMS) face a trade-off between power consumption and robustness to disturbances, as they are pre-set during manufacturing based on theoretical assumptions and do not account for actual environmental conditions, leading to insufficient robustness in real-world use.
Innovation Solution
A transceiver with a signal generation unit, sensor unit, and control unit that calibrates the differential output voltage based on measured current during a calibration phase, adapting to actual environmental conditions to achieve a balanced compromise between power consumption and robustness to disturbances.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the TPL transceiver is pre-set during manufacturing based on theoretical assumptions, then the power consumption is reduced, but the robustness to disturbances deteriorates
Solution Approach 1:
The patent applies preliminary action by performing a calibration phase before normal operation, where the transceiver measures actual bus characteristics (resistance, disturbances) and adjusts its parameters accordingly. This preliminary measurement and adjustment ensures that the transceiver is optimally configured for the specific environmental conditions before actual data transmission begins, resolving the contradiction between pre-set power efficiency and adaptive robustness
Solution Approach 2:
The patent implements feedback by continuously monitoring the communication bus characteristics through measurement circuits and using this information to dynamically adjust the transceiver parameters. The system measures actual bus resistance and disturbance levels, then feeds this information back to modify the differential voltage levels and transmission power, achieving both power efficiency and robustness adaptively
2Reliability
If the TPL transceiver is pre-set for worst case bus characteristics, then the robustness to disturbances is improved, but the power consumption increases
Solution Approach 1:
The patent applies dynamics by transitioning from a static pre-set configuration to a dynamic adaptive system. The transceiver continuously measures actual bus characteristics and dynamically adjusts its differential voltage levels and transmission parameters based on the measured conditions. This allows the system to operate at lower power levels under normal conditions while automatically increasing robustness only when disturbances are detected, rather than maintaining high robustness constantly
Solution Approach 2:
The patent implements parameter changes by modifying key transmission parameters (differential voltage levels, power settings) based on measured bus characteristics. The system changes these parameters adaptively - using lower power settings when bus conditions are good, and increasing power/voltage levels only when disturbances or high resistance are detected, thereby resolving the contradiction between consistent robustness and variable power consumption
3Ease of manufacture
If the transceiver uses hardcoded settings from manufacturing tests, then the manufacturing complexity is reduced, but the adaptability to environmental conditions deteriorates
Solution Approach 1:
The patent applies self-service by enabling the transceiver to automatically characterize its own operating environment through built-in measurement circuits. The device performs self-diagnosis of bus resistance and disturbance levels, then self-adjusts its parameters without requiring external configuration or complex manufacturing testing for each specific environment. This maintains manufacturing simplicity while achieving high adaptability
Solution Approach 2:
The patent uses preliminary action by incorporating an automatic calibration phase that occurs during initial operation or startup. During this phase, the transceiver measures actual bus characteristics and configures its parameters accordingly before normal data transmission begins. This preliminary self-configuration eliminates the need for complex pre-manufacturing adaptation while ensuring optimal performance for the specific environmental conditions
Data Source
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AI summary
The present disclosure relates to a transceiver (100) comprising a first and second terminal, a signal generation unit a signal generation unit (110) for generating a differential output voltage (Vout) between the terminals, a sensor unit (112) configured to measure an electric current (lout) when flowing through one of the terminals, and a control unit (114) for controlling the signal generation unit, wherein the control unit is configured to control the signal generation unit during a calibration phase to generate a predetermined differential output voltage reference pattern (140), wherein the sensor unit is configured to measure a calibration current unit during the calibration phase, and wherein the control unit is configured to calibrate the signal generation unit depending on the calibration current. The present disclosure also relates to a method for the transceiver.