Design And Implementation Of Smart Home Voice Remote Control System Based On The Android And GSM Technology

The Internet of things is one of the network to connect the items to the Internet inaccordance with the protocol through kinds of sensing device, such as radio frequencyidentification, laser scanner, GPS and infrared sensors, and then to exchange theinformation for communication to realize intelligent identification, location, tracking,monitoring and management. The further development of the internet of things providesmore security and development space for the smart home, it could be thought that the smarthome is the most important embodiment of the application of the Internet of things.In orderto better meet the requirements of intelligent family, the article put forward a method ofvoice remote control of household equipment based on Android phones and the GSMtechnology to offer more choice of whole intelligent household systematic and diversified.The system adopted the Android platform to develop the sender software and thereceiver software. The sender software could deil the receiver mobile phone numberthrough GSM technology. The receiver software monitored the mobile phone state, whenthe phone called, the receiver software queried the database to determine the number wetherconsistent with the storage number, and automatically chose wether to answer the senderphone call. The sender software sent different DTMF audio signal via buttons and thereceiver software received the DTMF audio and then opened the speaker to play it.The lower computer of the system was developed on the basis of the micro controllerSTC89C52. The lower computer received the DTMF audio via mike played by the uppercomputer, and then amplified the audio signal through LM386audio chip, identified anddecoded the audio through MT8880chip, and analyzed the key code values. Then the lowercomputer parsed the decoded code values to embedded development platform, andtransmitted the code values to the perform module to complete the control of smart homehousehold devices.The test showed that the Android software communicates well, the automatic answerof the receiver software could compatible with other different Android version. Due to the limited conditions, the test only conducted on5phones, but the automatic answer could berealized completely.The lower computer could control household device precisely andstably through multiple tests. The results showed that the system could realize the expectedfunction and have higher practical value.