Design of a Home Voice Controller Based on AVR32

Introduction: The home appliance voice recognition system developed in this project can realize voice answering and time reporting as well as voice control of basic home appliances, so that voice technology can be integrated into daily life, bringing people a more convenient, comfortable and healthier lifestyle.

1. Project Overview

1.1 Introduction

As home control enters the era of informatization and intelligence, the integration of voice recognition technology with embedded devices and home smart devices with infrared remote control function will bring great convenience to people's home life. At the same time, this project will undoubtedly have positive significance for the daily life of people with disabilities. The AVR32AT32UC3A microcontroller is compatible with a series of rich peripherals and storage, and can fully develop the full potential of AVR32 devices. With this microcontroller as the core, expanding voice recognition output, infrared recognition transmission module, etc., can better complete the relevant functions of this project, and will greatly improve the versatility. The home appliance keyword voice recognition system developed in this project can realize voice response time and voice control of basic home appliances, so that voice technology can be integrated into daily life, bringing people a more convenient, comfortable and healthier lifestyle.

1.2 Project Background/Motivation for Topic Selection

Home intelligence is an inevitable trend in the development of today's society. The embedded infrared remote control system based on voice chip can well realize the control of household appliances, etc. The voice remote control system based on AVR has great advantages in innovation and cost performance, is easy to be put into mass production, and has broad market prospects.

Caring for the disabled has always been a hot topic in society. The development of products such as blind glasses and advanced wheelchairs has improved the lives of the disabled. However, there is no product for the disabled to control home appliances. Based on the current social situation, the concern for the disabled and the market with great development potential, and with the development of computer and microelectronics technology, speech recognition technology has been put into practical use. At the same time, some voice-specific chips with practical value have also appeared. This has enabled the realization of an embedded voice development platform, making voice intelligent control possible, and providing a new type of language body for the disabled.

2. Demand Analysis

2.1 Functional requirements

basic skills:

1. Voice response time announcement;

2. Voice control of light switches;

4. Voice control the TV switch and select the corresponding channel;

3. Voice control of the air conditioner’s switch, temperature adjustment and other corresponding functions.

Figure 1 System architecture

2.2 Performance requirements

1. The system is required to have a high speech recognition rate;

2. There are voice prompts during the operation process to achieve good human-computer dialogue;

3. High reliability in receiving and sending infrared data, achieving error-free operation and no response;

3. Solution Design

3.1 System Function Implementation Principle

Figure 2 System hardware structure diagram

3.2 Hardware platform selection and resource allocation

Homemade development platform

3.3 System Software Architecture

Figure 3 Software architecture

3.4 System Software Process

Figure 4 Main program flow chartFigure 5 Interrupt handling flow chart

3.4 Expected Results of the System

Basic functions: Accurately control the light switch and voice time through keyword voice, accurately control the corresponding household appliances through keyword voice, the TV can accurately change channels, and the air conditioner can realize functions such as switching on and off and adjusting the temperature.