SENG2130/6350-Systems Analysis and Design Triple S Emergency Management System Assessment

After years of complaints, communication problems, and slow response, the city of Nuvalis have recently combined their various emergency stations into a single, unified emergency control centre located in the heart of the city. The new centre is intended to combine all manual and automatic alerting, communications, and emergency response services for the entire city to support its rapidly growing population. This new centre has been named 'Triple S' by the city, both as a nod to the 'triple zero' emergency phone number, and as a description of the combined services provided, Sensing, Sending, and Saving.

The Sensing part of the operation involves detecting (or sensing) various conditions that require an emergency response. The three primary ways that this occurs are via phone calls to an emergency phone number (000, 112, or 106), broadcasts over an emergency radio frequency (such as VHF channel 16, 121.5 MHz, etc) which are usually used for emergencies in remote areas (such as bushland, or the sides of mountains), on water, and in the air, and alerts from registered sensors (e.g. burglar alarms, smoke detectors, medical alarms, weather stations, etc).

When an alert comes in, the operator will attempt to obtain a location for the emergency, which could be done by remotely activating the GPS service on a mobile phone, looking up the registered address of a landline phone or sensor, or by radio triangulation. Aside from sensors, the operator will ask for the address or location of the emergency to obtain or confirm this information. The type of emergency must also be identified in order to determine the type of dispatch needed, such as police, fire, ambulance, state emergency service (SES), bush search and rescue (BSAR), port authority, etc.

Once the location and nature of the emergency have been identified, the second part of the operation is Sending. This involves dispatching one or more emergency response services to the location of the emergency. Where multiple services are involved, the operator will also need to co-ordinate communications between the various services to ensure that everyone has the most current information. In certain cases, a call may need to be passed onto another service entirely, for example, an aviation emergency will usually need to be passed onto the air traffic control (ATC) centre responsible for the area the aircraft is located in, or the tower for the nearest airport. The operator will look up this information and alert the relevant ATC of the radio frequency the call is on. Aviation emergencies are usually handled by ATC in the first place, Triple S in this case simply acts as a backup in case ATC do not quickly respond to a call on the emergency frequency.

Triple S maintains a record of all emergency response services, the location of the dispatch centres, number and type of vehicles and human responders available, as well as a live update of which resources are available, and which are currently in use (in for repair, responding to a different emergency, etc). The operator may manually choose which dispatch centre(s) to contact for a response or do an automatic search for the nearest suitable centre that has available resources. In the case of a human reporter (phone or radio alerts), the operator will remain in contact with the reporter until emergency services have arrived at the location. In case of an emergency that crosses city limits into the emergency response zone of another city or town (e.g., a car chase, a bushfire, etc), the operator will contact all other involved emergency control centres to share information and co-ordinate the response as needed.

Not all alerts require a human operator. Some sensors have registered rules that can be automatically followed without human intervention, for example, a burglar alarm at a bank may have been registered with Triple S with a rule that the nearest police responder should automatically be dispatched. A smoke alarm at a business may have been registered with Triple S with a rule that, if the alarm persists for more than five minutes, the nearest fire and rescue responder should automatically be dispatched. The registration for all sensors includes an address or location, which is transmitted to the responder automatically where such a rule is in place.

While most of the Saving is done by the emergency response services, operators can write messages to be sent out on local weather alert radio frequencies and send priority alerts to local television stations where necessary. These actions are recorded and may be audited later by the manager who acts as the Local Emergency Operations Controller. As required by law, all operators working for Triple S are members of the NSW Police Force, and their records must be securely stored in the system, accessible only to the manager. This consists not only of basic personal information, but also qualifications, experience, availability, and medical information (in particular, mental health records have historically proven to be very important to keep for each operator, as the nature of the job is often stressful, and can at times be distressing). The centre must be constantly staffed 24 hours a day, 7 days a week, and the availability of each operator is used to produce a roster for this purpose according to the anticipated demand, which fluctuates depending on a wide range of conditions (for example, fires are more likely to occur during warmer weather with low humidity).

For auditing purposes, all alerts, dispatches, and actions taken by operators are stored in separate logs, which can be accessed and reviewed by the manager. Recordings of all calls, both phone and radio, are also stored for up to seven years.

Objective of the system

The main objective is to design a unified system that will control all technical and administrative operations of Triple S.

1. Theoperator needs all information at their fingertips to make 
2. Safety is a criticalaspect of this business, as lives are at stake if a system erroroccurs.
3. Themanager requires reports each 
4. Recordsmust be kept confidential, only accessible by authorised 
5. The system must be able to receive and report on live data as it comes in, 24/7, with reliability anduptime a priority. One example of live data would be the current availability and location of dispatched services and 

Tasks

The system definition above will be used for the two assignments for this course. For this assignment, you will design and propose an implementation strategy for the system. You should identify system processes and user requirements. In this assignment you will design the system according to the requirements identified in part A, map business rules to your design and construct a model of the system in UML. Specifically, you will develop sequence diagrams, interface storyboards, and map out a class diagram for the solution domain.

There are no limits to how far the requirements and analysis might go. However, complexity, coverage and correctness of the elements will be taken into account in the assessment of the submitted work.

The main Reference list (including but not limited to, any references used for the introduction and business rules sections in particular)

Assigned Task To Me - FATAI

1. Complete a sequence diagram, use case description, and user interface design for both of youruse cases as in part 

Assigned in Part A: Use Case Assigned are Phone Call Use case and Manual Dispatch Selection.

1. BusinessRules for Other Legislations and 
2. Performa risk assessment: Identify a list and ranking of major and minor risks for the  Rate the likelihood and impact of each risk to determine their severity. Any risks with a high severity should include a mitigation strategy, and an updated rating after the strategy is implemented. To help with this you might like to consider the following questions:

• Whatis a risk matrix?
• Whatuse cases involve risk?
• Are there any ethical considerations that will need to be considered – If so, what arethey?
• Arethere any special privacy or security conditions expected by the client?
• Therisks will include the project and your team (e.g. cost and schedule overruns).