Vehicle HMI Voice Control Without Wake Words
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Solution Overview
Problem
Conventional vehicle voice control systems require wake-up words or trigger buttons, leading to user burden and limited voice-controllable scenarios, with potential for mal-operations due to inadvertent instruction activation.
Innovation Solution
A voice control method and system that converts interface elements on a vehicle's human-machine interface into voice-controllable elements without the need for wake-up words, allowing users to control vehicle functions by reading out interface elements, with dynamic adjustment of voice instructions based on changing interface elements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If wake-up words or trigger buttons are used in conventional voice control systems, then the system can distinguish intentional voice commands, but the user burden increases and the number of voice-controllable scenarios is limited
Solution Approach 1:
The patent extracts and removes the wake-up word requirement from the voice control system. The system directly processes voice commands without requiring users to say wake-up words or press trigger buttons, thereby reducing user burden while maintaining accurate command recognition through interface element matching
Solution Approach 2:
The patent makes all interface elements voice-controllable, not just specific functions. Any interface element displayed on the HMI can be activated by voice, expanding the number of voice-controllable scenarios from a limited set to comprehensive coverage of all vehicle functions
2Ease of operation
If the instruction set includes excessive voice-controllable instructions without wake-up words, then convenience is improved, but mal-operations due to inadvertent instruction activation increase
Solution Approach 1:
The patent applies local quality by making voice control availability context-dependent. Voice control is enabled for specific interface elements based on their current display state and relevance to the user's needs, rather than uniformly enabling all functions. This ensures that only relevant voice signals are processed, preventing inadvertent activation of unrelated instructions
3Adaptability or versatility
If conventional systems require users to remember all voice-controllable instructions, then system functionality is comprehensive, but user burden increases
Solution Approach 1:
The patent implements self-service by having the system automatically present relevant voice instructions based on the currently displayed interface elements. Users don't need to remember what functions are voice-controllable; the system adapts to their current context and makes relevant functions accessible through voice, thereby maintaining comprehensive functionality while eliminating the memory burden
Data Source
AI summary
A voice control method for controlling functions of a vehicle including: creating a voice instruction set including voice instructions for converting interface elements associated with related vehicle functions into voice-controllable elements without any wake-up word; acquiring one or more interface elements currently presented on a human-machine interface (HMI) of the vehicle; extracting a voice instruction corresponding to the acquired one or more interface elements from the voice instruction set; and outputting the voice instruction to a speech engine, so that the speech engine processes a voice signal detected in the vehicle according to the voice instruction.