Electric Device Controller Based on Google Assistant

Abstract

This paper proposed an electric device controller based on Google Assistant by applying Raspberry Pi, ESP8266, and Google Assistance to cooperate with Web Applications. Our work can control the operation by speech command, which can use for handicapped persons and help reduce the workload for a caregiver of the handicapped person. We designed and developed the hardware, thereby sending speech signals via a microphone that interfaced with Raspberry Pi board into the Firebase network, or we can also send the speech call via Google Assistant on a mobile phone into Firebase on Cloud Server, which those of two format signals will be converted and analyzed under commands by Google Assistant and Firebase respectively. Those commands will be transferred to ESP8266 for controlling hardware operations such as turning on and turning off electric devices, adjusting the brightness level of the lamp in various rooms, and adjusting the pump's water pressure level to the plant. Moreover, it can also monitor the operation status or control via Web Applications. As the experimental results, we observed that our application could turn on or off electric devices via Web Application and speech command based on the average accuracy of approximately 100% and 99.25%, respectively. The experimental results of brightness level adjusting of the lamp via Web Application and speech command are the average accuracy of approximately 100% and 92.3%, respectively. The experimental results of pressure water level adjusting for supplying the plant via Web Application and speech command under the average accuracy are approximately 100% and 90.9%, respectively. The experimental results of measuring the electric power usage during 30 days (720 hours) are equal to 6.65 units, an electric bill is equal to 15.63 Baht without including electrical variation (Ft), and a VAT of 7%. Therefore, the proposed system can apply to handicapped and ordinary people.