TPMS Menu Interface Mapping Through RF Protocol Verification
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Solution Overview
Problem
The existing automobile tyre pressure monitoring systems face errors in positioning the function menu interface due to redundant and inaccurately input vehicle information, leading to potential safety hazards.
Innovation Solution
A method and apparatus that utilize a tyre pressure monitoring assistance tool with a radio frequency unit and OBD interface to simulate candidate radio frequency communication protocols, determine the actual protocol by matching simulation data with recorded data from the tyre pressure monitoring unit, and accurately display the function menu interface based on this determination.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If detailed vehicle information is required as user input to position the function menu interface, then the system can identify the vehicle, but the complexity of user input increases and errors are more likely to occur
Solution Approach 1:
The system automatically acquires vehicle information through the OBD interface without requiring manual user input. The assistance tool queries the vehicle's onboard systems to retrieve vehicle identification data, model information, and other parameters automatically, eliminating the need for users to manually enter detailed vehicle information while ensuring accurate identification for positioning the function menu interface.
Solution Approach 2:
The patent replaces the manual input mechanism with an automated electronic data acquisition system. Instead of users manually entering vehicle information through a form or interface, the system uses the OBD (On-Board Diagnostics) interface to electronically query and retrieve vehicle data directly from the vehicle's computer systems, substituting mechanical/manual operations with automated electronic communication.
2Measurement precision
If multiple candidate radio frequency communication protocols are simulated to identify the actual protocol, then the accuracy of protocol identification improves, but the time required for identification increases
Solution Approach 1:
The system pre-simulates multiple candidate radio frequency communication protocols and prepares test signals for each protocol before actual identification is needed. By having the simulation results and protocol characteristics pre-computed and stored, the system can quickly match the actual vehicle response against the pre-prepared candidates, reducing the time required during actual operation while maintaining high identification accuracy.
Solution Approach 2:
The system simulates more candidate protocols than strictly necessary (excessive action) to ensure the actual protocol is definitely among the candidates being tested. This approach may involve testing all possible RF protocols rather than only the most likely ones, ensuring comprehensive coverage and accurate identification even though it requires more simulation steps than the minimum needed.
Data Source
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AI summary
A method for displaying a function menu interface of an automobile tyre pressure monitoring system (120), for use in a tyre pressure monitoring assistance tool (200), the tyre pressure monitoring assistance tool (200) comprising a radio frequency unit (230) and an OBD interface (240), the tyre pressure monitoring system (120) comprising a tyre pressure monitoring unit (121), the OBD interface (240) being communicatively connected to the tyre pressure monitoring unit (121), and the method comprising: S 100: acquiring vehicle information of an automobile (100); S200: on the basis of the vehicle information, determining a candidate radio frequency communication protocol of the tyre pressure monitoring unit (121); S300: by means of the radio frequency unit (230) simulating the candidate radio frequency communication protocol, sending a radio frequency signal to the tyre pressure monitoring unit (121), the radio frequency signal comprising a sensor identification code and simulation measurement data; S400: if recorded measurement data corresponding to the sensor identification code is read out from the tyre pressure monitoring unit (121) by means of the OBD interface (240), and the recorded measurement data is consistent with the simulation measurement data, then determining that the candidate radio frequency communication protocol is the actual radio frequency communication protocol of the tyre pressure monitoring unit (121); and S500: on the basis of the actual radio frequency communication protocol, displaying a function menu interface of the tyre pressure monitoring system (120). Also disclosed are an apparatus for displaying a function menu interface of an automobile tyre pressure monitoring system (120), a tyre pressure monitoring assistance tool (200), and a non-volatile computer readable storage medium. The radio frequency communication protocol of the tyre pressure monitoring unit (121) is unique and therefore, by means of the aforementioned method, the function menu interface of the automobile tyre pressure monitoring system (120) can be accurately positioned.