Wheel Electronics Two-Stage Transmission Mode
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Solution Overview
Problem
Current battery-free tire checking systems face significant startup times due to lengthy charging periods before they can transmit tire-specific parameters, which is a safety concern and inefficient use of power.
Innovation Solution
Implementing a two-stage transmission mode where the wheel electronics initially operates in a power-reduced mode to quickly establish communication and then switches to a normal mode for full data transmission, using a rechargeable power storage medium and varying power storage capacity and modulation methods to minimize startup time and maintain robustness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of stationary object
If a battery-free power supply with rechargeable power storage medium is used in wheel electronics, then the service life is extended and maintenance is reduced, but the startup time increases due to lengthy charging periods
Solution Approach 1:
The patent applies dynamics by making the transmission power variable rather than constant. The transmitting device dynamically adjusts its power consumption based on the charged state of the power storage medium, increasing power during fully charged periods for normal transmission and reducing power during low-charged periods to enable transmission despite extended charging requirements. This dynamic adaptation resolves the contradiction between extended service life and reduced startup time.
Solution Approach 2:
The patent changes the parameter of transmission power from a fixed value to a variable value that depends on the charged state. By monitoring the charged state of the power storage medium and adjusting the transmission power accordingly, the system can transmit data even when charging takes longer, thus reducing the effective startup time while maintaining the battery-free architecture's service life benefits.
2Loss of time
If transmission power is reduced during startup to enable earlier data communication, then startup time is reduced, but transmission robustness may be compromised
Solution Approach 1:
The system dynamically adapts transmission power based on the charged state of the power storage medium. When the charged state is low, the system uses reduced transmission power with extended charging periods, and when the charged state is high, it uses normal transmission power with standard charging periods. This dynamic adjustment maintains transmission robustness by matching power levels to available energy reserves while minimizing startup time.
Solution Approach 2:
The transmitting device monitors the charged state of the power storage medium and uses this feedback information to adjust transmission parameters. This feedback mechanism ensures that transmission robustness is maintained by adapting power levels to the actual energy availability, preventing transmission failures while reducing startup time through optimized power management.
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
This approach significantly reduces startup time, enabling early data communication and improving safety by allowing critical tire-specific parameter data to be transmitted promptly while maintaining high data communication robustness and efficiency.
Implementation Method 1
a battery-free power supply, which has at least one rechargeable power storage medium for the power supply to the wheel electronics system
Implementation Method 2
data that relates to tire-specific parameters is determined by the wheel electronics system and is transmitted to a vehicle-mounted communication device in the form of modulated transmission signals
Data Source
AI summary
A method for operating wheel electronics of a tire checking system includes providing wheel electronics having a battery-free power supply encompassing at least one rechargeable power storage medium for supplying power to the wheel electronics. The wheel electronics can be operated in a reduced-power transmission mode and a subsequent normal transmission mode. In the modes, data that relate to tire-specific parameters and are determined by the wheel electronics are transmitted to a vehicle-mounted communication device in the form of modulated transmission signals, with less transmission power being used for the transmission signals in the power-reduced transmission mode than in the normal transmission mode. Wheel electronics and a tire checking system are also provided.