User Manual

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Siemens Reservation and energy management CM110602en
Building Technologies Background information 09/30/2008
5 Background information
To benefit from effective savings by use of the Reservation and Energy Management
component of the Siemens HOTEL SOLUTION, it is important that the rooms are
allocated to guests in the best order in terms of energy efficiency.
This section describes the algorithm used by the HOTEL SOLUTION system to create
a room list in the optimum order from the point of view of energy efficiency.
5.1 Basic principle
The most energy-efficient order for the allocation of rooms is based on the "IPO"
principle:
The booking information for the coming day is transferred from the FOS program via
the link.
Based on this input data combined with the order of priority assigned to the energy
groups and rooms and the estimated number of "walk-ins", a list is generated, showing
the rooms in optimum order in energy terms. At the same time, the rooms are set to the
required room state.
A table is created showing all the available rooms with the appropriate room state and
room priority. A stored procedure could be used to read this table.
The input is written to a table in the database, which creates a further table in the
processing phase, suitable for output. Access to the tables is only possible via stored
procedures. The advantage of this method is that the database interface remains
independent of the FOS software.
5.2 Input interface
The FOS program requires information on the current occupancy of the hotel and the
anticipated occupancy on the next day. The required inputs are as follows (for each
room type):
• Which rooms (by room number) are occupied and will remain so?
• Which rooms (by room number) will be vacated due to check-out the next day?
• For which rooms (by room number) are there confirmed bookings for the next day?
• How many rooms are reserved without room numbers?
5.3 Processing
In this phase, the optimum order for room allocation in energy terms is calculated on
the basis of the input information, the currently assigned priority numbers and the
predefined setpoints.
The algorithm can be started either at a specific time of day or after a successful
transfer of data from the FOS program without the need for further synchronization.
Suitable dialog boxes must be created in the FOS program for the input data. The
algorithm should be started automatically when the inputs are complete.
I = Input:
P = Processing
O = Output: