Interpretation of SPCE061A smart car voice recognition system circuit

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In recent years, intelligent and automated technologies have received increasing attention in the field of toy manufacturing. This paper introduces the design of an intelligent car control system - voice control car. The voice control car is a representative product based on SPCE061A. It is launched with the 61 board and comprehensively applies the resources of SPCE061A. The car adopts voice recognition technology and can control its driving state through voice commands.

Speech recognition technology is a very active research field in recent years. The practical research of speech recognition system is a major direction of speech recognition research. Taking the toy market as an example, electronic toys and smart toys with high-tech content are developing rapidly. Electronic interactive and intelligent toys have become the mainstream of the development of the toy industry. China is a big country in the production and export of toys, but there is a big gap between the development of high-tech toys and foreign countries. Therefore, investing in this aspect of research in a timely manner, both for technological innovation and social and economic development, is huge. Realistic meaning. Communicate with the machine and let the machine understand what you are saying. This is what people have long dreamed of. Speech recognition technology is a high-tech technique that allows a machine to transform a speech signal into a corresponding text or command through a recognition and understanding process. In the past two decades, speech recognition technology has made significant progress and has begun to move from the laboratory to the market. The speech recognition function greatly increases the fun of the toy and makes the toy reflect certain intelligence, so it has become the key technology used in the design of most electronic toys and smart toys.

This paper uses Lingyang MCU to design a smart remote control car with voice recognition function. The design changes the remote control car from the traditional manual remote control to the voice recognition remote control, integrates the advanced speech recognition technology, and the motorized and flexible features of the trolley enable the controller to control the trolley to realize the preset action, thereby releasing the control. The hands of the person, and the car and the controller also have a certain interactive function. Therefore, this study has strong practicality and development prospects.

Relay drive circuit design

Since the current supplied by the I/O port of the MCU is too small, the relay cannot be directly driven. Here, the 8050NPN tube is used to provide a switching voltage to realize the I/O port to drive the relay; the IN4007 is used to remove the reverse current generated by the coil when the relay is disconnected, and the 8050NPN tube is protected from damage. The relay drive circuit is shown in the figure.

Driving state control circuit design

As shown in the figure, the state control circuit is used. The driving state of the whole trolley is controlled by two motors MOTOR A and MOTOR B; MOTOR A controls the left two wheels of the trolley, and MOTOR B controls the two wheels on the right side of the trolley. The specific controls are as shown.
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