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4.A weather station plans to setup a network of 400 sensors (temperature, humidity, rainwater, wind speed and direction, etc.) to monitor the environmental parameters of
4.A weather station plans to setup a network of 400 sensors (temperature, humidity, rainwater, wind speed and direction, etc.) to monitor the environmental parameters of a university campus of about 2.0 km2 area. One suggested implementation plan, for the weather station to acquire the data from the network of sensors, is to have the sensors connected in a manner as shown in Figure 1 Weather Station mainframe computer University Host .. . Other sites Computer Distributed Computer #1 Distributed Computer #40 Sensor #1-1 | | Sensor #1-10 Figure 1 (a) State the advantages of an embedded system versus a general purpose computer (3 marks) (b) Each of the 400 sensors are connected to a MCU with communication capability Assuming that there are 40 clusters across the campus and each cluster has a Distributed Computer. Suggest a suitable type of computer architecture for the Distributed Computers and a suitable wireless communication method between each Distributed Computer and the 10 sensors in its cluster. Briefly explain your answers. 4 marks) (c) The University Host Computer is connected wirelessly to the Distributed Computers in the 40 clusters across the campus. Suggest a suitable type of computer architecture for the University Host Computer and a suitable type of communication method between the University Host Computer and the Distributed Computers. Briefly explain your answers 4 marks) (d) How would your answers in (b) and (c) have changed if there are 1,200 sensors with the same number of clusters? Briefly explain your answers. 4.A weather station plans to setup a network of 400 sensors (temperature, humidity, rainwater, wind speed and direction, etc.) to monitor the environmental parameters of a university campus of about 2.0 km2 area. One suggested implementation plan, for the weather station to acquire the data from the network of sensors, is to have the sensors connected in a manner as shown in Figure 1 Weather Station mainframe computer University Host .. . Other sites Computer Distributed Computer #1 Distributed Computer #40 Sensor #1-1 | | Sensor #1-10 Figure 1 (a) State the advantages of an embedded system versus a general purpose computer (3 marks) (b) Each of the 400 sensors are connected to a MCU with communication capability Assuming that there are 40 clusters across the campus and each cluster has a Distributed Computer. Suggest a suitable type of computer architecture for the Distributed Computers and a suitable wireless communication method between each Distributed Computer and the 10 sensors in its cluster. Briefly explain your answers. 4 marks) (c) The University Host Computer is connected wirelessly to the Distributed Computers in the 40 clusters across the campus. Suggest a suitable type of computer architecture for the University Host Computer and a suitable type of communication method between the University Host Computer and the Distributed Computers. Briefly explain your answers 4 marks) (d) How would your answers in (b) and (c) have changed if there are 1,200 sensors with the same number of clusters? Briefly explain your answers
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