Voice control system and method for voice selection, and smart robot using the same

A voice control system, entering a sleep mode or a working mode, comprising:

• an audio detection device, in the sleep mode continuously detecting whether there is a wake-up sentence in a voice signal received by a receiver, and generating an indication signal when the wake-up sentence is detected;
• a memory, storing an interaction program and a database, wherein a plurality of first command sentences, sets of voice options and a plurality of task contents are stored in the database, each first command sentence corresponds to one set of the voice options, and each voice option corresponds to one of the task contents;
• and
• a processor, connected to the audio detection device and the memory, wherein the voice control system operates in the working mode after the processor is woken up by the indication signal, and in the working mode the processor executes the interaction program to:
• control the audio detection device to detect whether there is any first command sentence in the voice signal received by the receiver;
• determine the set of the voice options corresponding to the first command sentence;
• through a player, sequentially play each voice option of the set of the voice options, wherein there is a predetermined time interval between every two voice options played by the player;
• within the predetermined time interval, control the audio detection device to detect whether there is a response sentence in the voice signal received by the receiver;
• determine whether the response sentence matches with one of the voice options when there is the response sentence in the voice signal received by the receiver;
• and
• if the response sentence matches with one of the voice options, output the task content corresponding to the voice option and then make the voice control system enter the sleep mode.