Oct 2011
carbon monoxide detector beeping
The keypad should be installed next to the entry door because it is programmed with a time lag, to permit you to exit when leaving, and enter on arriving home, without activating the alarm. We have set a profile that gives you 20 seconds before leaving the house and the alarm starting. By clicking the A button on the keypad the counter starts giving you the amount of time to leave the house. If the magnets of the magnetic switch get separated, by the opening of a door or a window depending on where it is installed, the internal invisible counter gives the user 15 seconds or 3 trials to set the password correctly or the alarm will go off. The alarm will remain firing until the password is set correctly. In the scenario of a college football game, the private security officers will provide several services to the college which is the premises to which they are assigned. The primary role of the private security officers is to detect, deter, observe and report any incidences at the stadium. First, they will be in charge of checking the bags belonging to all persons willing to enter the football field to make sure there are no weapons carried into the field or other items that are prohibited. Secondly, the security officers will need to coordinate and monitor the events and communications taking place in the stadium to ensure that key operations are running smoothly such as access to control posts, access to medical support staff and other services such as amenities provided to the crowd Ortmeier, 2009The private security officers will also be in charge of providing the crowd and other…… The Task Force eport suggested that both of these crime deterring institution work together rather than against one another Craighead, 2003. The primary difference between public and private security are the roles of the policing personnel. For public security the purpose is to protect the public, be it property, people, or crimes against property or people.
Moreover, when activity takes places, such as the opening of a window, the sensors report the activity to the control center and the center registers that a disturbance has occurred. In managed alarm systems, the control panel also checks the sensors to verify that they are still operational; if a sensor fails to reply, the center alerts the home owner of an out of order sensor. If the home owner activates the alarm system and the control center registers activity in the home, a signal is sent by the control to a buzzer, flashing lights or any other audiovisual alarm element. Our design for a functional keypad was the usage of an alternation of ports between inputs and outputs which is done by using the TRIS function. We started off by setting the first four ports of PORTB as the inputs and the latter four ports as the outputs. The first four ports are connected to the columns meanwhile the last four are connected to the rows. Moreover, as a justification for this reasoning is the fact that it is required to scan the columns for the pressed key and then scan the rows and the results will be decoded in a decoder telling us which button of the keypad was pressed. The main functionality of the keypad as mentioned earlier is to set the code. The alarm can be armed and disarmed with a standard four digit user code in our case. The