Simultaneous Multi-Switch State Detection via Segmented Voltage Analysis
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Solution Overview
Problem
Conventional resistor ladder networks in automotive vehicle electrical systems cannot simultaneously detect the states of multiple switches independently, leading to a priority scheme that limits the ability to monitor vehicle states effectively.
Innovation Solution
A switch detection system with a hardware controller that determines the states of multiple switches by analyzing voltage potentials across input and output terminals, using a state table to cross-reference electrical states with vehicle system states, allowing independent and simultaneous analysis of switch states without prioritization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional resistor ladder networks are used to detect switch states, then the system can detect switch states using a voltage divider circuit, but the system cannot simultaneously detect multiple switch states independently due to the priority scheme
Solution Approach 1:
The patent divides the switch detection system into multiple independent detection channels, each capable of independently detecting the state of a specific switch. Instead of using a single voltage divider circuit that processes all switches sequentially with priority, the system segments the detection function so that each switch state can be measured independently and simultaneously, resolving the contradiction between detection accuracy and multi-switch capability.
Solution Approach 2:
The patent creates a universal detection system that can handle multiple switch types and configurations through a common architecture. The system uses multiple analog switches and resistor combinations that can be configured to detect various vehicle states (headlights, turn signals, wiper status, etc.) simultaneously, making the system adaptable to different detection needs without sacrificing independent measurement capability.
2Ease of operation
If a priority scheme is implemented in resistor ladder networks, then the system can determine switch states sequentially, but the system loses the ability to monitor all vehicle states simultaneously
Solution Approach 1:
The patent implements continuous simultaneous detection of all switch states through parallel analog switch channels. Instead of sequentially determining switch states through a priority scheme that processes one switch at a time, the system maintains continuous monitoring of all vehicle states simultaneously, eliminating detection time loss while keeping the determination process simple through direct voltage-to-state mapping.
3Ease of manufacture
If conventional voltage divider circuits are used, then the system can operate at low cost with flexible implementation, but the system cannot achieve independent simultaneous detection of multiple switches
Solution Approach 1:
The patent transitions from a single-dimension sequential detection approach (one voltage divider circuit processing switches in priority order) to a multi-dimensional parallel detection architecture. By adding the dimension of parallelism through multiple analog switch channels operating simultaneously, the system achieves independent measurement accuracy for each switch while maintaining cost-effectiveness and implementation flexibility through the use of standard electronic components.
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
Enables the simultaneous and independent monitoring of multiple switch states, eliminating the need for prioritization and enhancing the ability to detect vehicle system states and components accurately.
Implementation Method 1
Based on a voltage potential across the input terminal and the output terminal, the hardware controller determines the first plurality of switch states independently from the second plurality of switch states
Data Source
AI summary
An automotive vehicle includes a switch detection system with a hardware controller having a power supply configured to generate a supply voltage. A first switch assembly includes an input terminal configured to receive the supply voltage. The first switch assembly includes a first switch configured to operate in a first plurality of switch states. A second switch assembly is connected in series with the first switch assembly and includes an output terminal connected to a voltage reference point. The second switch assembly includes a second switch configured to operate in a second plurality of switch states. Based on a voltage potential across the input terminal and the output terminal, the hardware controller determines the first plurality of switch states independently from the second plurality of switch states, and determines the second plurality of switch states independently from the first plurality of switch states.