Energy-autonomous wireless sensor nodes for automotive applications, powered by thermoelectric energy harvesting
| Autor: | E. Bäumker, M. Kroener, P. Woias, F. Lickert, P. Mehne |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Power management
History Engineering business.industry Node (networking) 0211 other engineering and technologies Electrical engineering 02 engineering and technology Computer Science Applications Education Power (physics) 020303 mechanical engineering & transports Thermoelectric generator Electricity generation 0203 mechanical engineering Sensor node 021105 building & construction Electronic engineering Wireless business Energy (signal processing) |
| Zdroj: | Journal of Physics: Conference Series. 773:012041 |
| ISSN: | 1742-6596 1742-6588 |
| DOI: | 10.1088/1742-6596/773/1/012041 |
| Popis: | In this paper we will first present the measurement of temperatures on different positions at a diesel-powered car. As a result, several locations are identified as suitable to implement a wireless sensor node powered by thermal energy harvesting. Based on the data gained a thermoelectric generator (TEG) has been selected, and measurements of energy generation have been performed. Further, a complete energy-autonomous wireless sensor node was designed, including the TEG with its mounting bracket, an electronic power management, and a Bluetooth Low Energy (BLE) sensor node. Based on temperature differences from -10 K up to 75.3 K occurring in test drives, a low power set up was chosen to achieve a system startup time below 10 minutes and to ensure service even under difficult ambient conditions, like high ambient temperatures or a slow movement of the car in stocking traffic. 2 minutes after starting the engine a power about of 10 mW is available from the chosen TEG, and in peak the power exceeds 1 W. In a 50 minute test drive it was possible to generate 650 J of energy. This information was used to develop the complete system, demonstrating the opportunity to deploy energy-autonomous wireless sensor nodes in a car, e.g. for exhaust gas monitoring. The system is used to gather sensor data, like temperature and humidity, and transmits data successfully via BLE to a prepared main node based on a Raspberry Pi. |
| Databáze: | OpenAIRE |
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