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[IEEE 2019 Photonics & Electromagnetics Research Symposium - Fall (PIERS - Fall) - Xiamen, China (2019.12.17-2019.12.20)] 2019 Photonics & Electromagnetics Research Symposium - Fall (PIERS - Fall) - An Intelligent Control System of Music Rhythms by RGB-LED Lamp
摘要： Based on the STM32 single-chip microcomputer (SCM), the relationship between music rhythm and the output color of red-green-blue-light-emitting-diode (RGB-LED) lamp is studied in this paper. Aiming at the problem that music rhythms and colors of light cannot be fully matched, the idea that the colors of RGB-LED lamp are controlled by music rhythms is put forward. Sound collector, microcontroller, power module, bias circuit, and RGB-LED lamp are adopted in the hardware design. In the software, the music data collected by an analog-to-digital converter (ADC) is converted into digital quantities. The color of RGB tricolor is controlled by changing the ratio of pulse width modulation (PWM). With a linear function, we adjust the lighting effect when the rhythm falls and filter out some smaller values, but the improvement is not satisfactory. Therefore, the nonlinear quadratic function instead of the linear function is used to eliminate the flicker when the music rhythm becomes weak. The experimental results show that the proposed improvement can give rise to a much better control effect for the colors of light by the music rhythms.
关键词： STM32,nonlinear function,PWM,music rhythm,RGB-LED
更新于2025-09-19 17:13:59
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[IEEE 2018 IEEE 20th International Conference on e-Health Networking, Applications and Services (Healthcom) - Ostrava (2018.9.17-2018.9.20)] 2018 IEEE 20th International Conference on e-Health Networking, Applications and Services (Healthcom) - Multipurpose Sensor for Human Movement Analysis
摘要： Inertial sensors are nowadays commonly used in many applications including medical devices, consumer electronics, automotive etc. Thanks to this wide range of use, a development of micro electro mechanical sensors has significantly grown in past ten years. There are some devices on the market, that are designed for measuring of human body motion. Some of them can be used for research, allowing user to change settings of sensors or data transmission using their software development kits. But the aim of this project was to develop the data measurement unit and control every acquisition process inside, with possibility to extend the device in the future. Also, segments of this complex device can be used in other custom applications. Therefore, a multipurpose device for analysis of human body movement was developed.
关键词： Bluegiga,low power,STM32,Inertial Measurement Unit,Bluetooth Low Energy
更新于2025-09-09 09:28:46
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[ACM Press the 2nd International Symposium - Stockholm, Sweden (2018.09.21-2018.09.23)] Proceedings of the 2nd International Symposium on Computer Science and Intelligent Control - ISCSIC '18 - Embedded Automatic Control System for Temperature, Humidity and Light Intensity in Agricultural Greenhouses
摘要： Based on the science and technology plan project of Shandong province, this paper designs an automatic control system based on the temperature, humidity and light intensity of the embedded agricultural greenhouse. The system uses DHT11 temperature and humidity sensor and BH1750 light intensity sensor to collect environmental information and transmit the collected data to the STM32F103ZET6 microcontroller for processing and sending out control signals. The system is simple in operation, low in cost and high in precision.
关键词： Temperature and humidity sensor,Light intensity sensor,STM32 microcontroller
更新于2025-09-09 09:28:46