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The paper presents an overall design method of parking guidance and information system (PGIS) with CAN bus. The image capture and recognition system installed at then entrance or exit is introduced firstly. Furthermore, a protocol used in the PGIS is designed, and the decomposition of the protocol is explored. In order to implement the system, some hardware design with low cost microcontroller and...
A network topology based on Control Area Network (CAN) special for parking lot to construct the parking guidance and information system (PGIS) is put forward. Through analysis of the parking logic division and parking lot information anatomy, the architecture with star topology is explored. On this base, the information of parking lots is classified in detail and the network suitable for transmitting...
The paper presents a research on the front-end receiving circuit for processing the modulated laser signal. In order to get an overall understanding of optical filtering, some knowledge about the light collection and the spatial filtering is discussed firstly. Subsequently, to improve the design of front-end circuit, several traditional laser receiving circuits are completely studied, and the advantage...
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