PEPS Sensor-Central Module Architecture for Flexible Positioning
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Solution Overview
Problem
Conventional passive entry passive start (PEPS) systems suffer from hardware-software coupling, limiting agile development and requiring high computing power, which is not met by single-chip microcomputers, leading to high costs and inflexibility.
Innovation Solution
A passive entry passive start system with sensors and a central module that decouple hardware and software, allowing for master-slave integration, enabling separate data acquisition and computation, and utilizing Bluetooth or ultra-wideband technology for enhanced positioning accuracy and flexibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a separate controller is used for PEPS system, then signal processing and control functions can be implemented, but hardware and software become highly coupled, limiting agile development
Solution Approach 1:
The patent segments the PEPS system into multiple independent modules: sensors (Bluetooth/UWB modules) for signal acquisition, a central module for positioning computation, and a controller for executing control actions. This modular architecture decouples hardware and software, allowing independent development and iteration of each component without affecting the entire system.
2Measurement precision
If neural network algorithms are used for positioning, then positioning accuracy is significantly improved, but computing power requirements increase beyond what single-chip microcomputers can provide
Solution Approach 1:
The patent extracts the computationally intensive neural network positioning algorithm from the single-chip microcomputer and relocates it to a separate central module with sufficient computing power. The sensors acquire raw signal data, which is then processed by the central module running the neural network algorithm, while the original controller only needs to execute simple control actions based on the positioning results.
3Power
If a single-chip microcomputer is used in the PEPS controller, then device complexity is reduced, but it cannot satisfy the computing power requirements of neural network algorithms
Solution Approach 1:
The patent merges the positioning computation function into a separate central module that is dedicated to running neural network algorithms. This central module combines the necessary computing power resources with the positioning algorithm, while the original controller maintains its simplicity for executing control actions. The merging of computation and control into separate specialized modules resolves the conflict between computing power requirements and device complexity.
Data Source
AI summary
A passive entry passive start system includes a vehicle and a mobile terminal, the vehicle including a plurality of sensors configured to interact with the mobile terminal to acquire service-related data, each sensor being a master node or a slave node; a central module configured to perform data exchange with the sensors, and generate a corresponding control instruction based on the service-related data received from the sensors, and configured to designate one of the plurality of sensors as a master node and the other sensors and the central module as slave nodes, or designate the central module as a master node and the plurality of sensors as slave nodes, where the master node implements data exchange with the slave nodes; and a controller configured to receive the control instruction from the central module and execute a corresponding control action according to the control instruction.