Eufhemism

We envision an autonomous parking facility for vehicle, where all processes required for daily operations are fully automated without the need for human assistance, while having a low carbon footprint.

Parking Slot Allocation Energy-Based Payment Adaptive HVAC + Lighting Automated Cleaning and Waste Disposal Automatic Fault Detection

• for communication among devices
• uses powerline wiring for signaling and control
• developed by PCS (Powerline Control Systems, Northridge CA)
• released 1999
• based on concept of X10 standard
  • inproved transmission rate
  • higher reliability > 99 % (X10 70-80 %)

Digitally encoded information is sent over the electrical powerline as a series of precisely timed pulses. The pulses are superimposed on top of the AC sine wave.

Fig. 1 UPB Pulse

Pulses are generated by charging a capacitor in the transmitter and then discharging it. A pulse can be sent once on each half-cycle. One pulse transmits two bits of information. Pulse value is selected by timing the pulse on one of four predefined positions. Transmitter tolerance for timing is ±40 μs.

Fig. 2 UPB Timing

UPB works on single-phase, split-phase and 3-phase powerlines.

The UPB Byte forms of four pulses (8 bits).

Fig. 3 The standard UPB Communication Packet

The first byte of the packet is called a preamble byte and it is used for synchronization on the receiver device. Preamble byte is always form of 2-1-1-2. The packet header contains information about the packet size, source, destination etc.

Fig. 4 The Packet Header

Fig. 5 UPB system model

Fig. 6 Setup register

Fig. 7 Linking components

Only having a few day to work on the project was not ideal and we only had a chance to implement a few ideas. There was a few more sensors and logic we would of liked to implement into the prototype if we had more time.

Table- with things we wanted to do.

Final report: Final presentation: Link to code: