Paschall's_ema620_module7-1
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Southern New Hampshire University *
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Course
620
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Industrial Engineering
Date
Dec 6, 2023
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docx
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EMA 620 Module Seven Worksheet
In this course, you will be asked to respond to a series of short-response questions. In this module, these
short-response questions will allow you to check your understanding of integration and test.
This worksheet will be graded with the Module Seven Assignment Rubric.
1.
For a system of interest to you (your own work or something found on the internet), show a
breakdown of the system into its subsystems. Discuss the role that each subsystem plays in
satisfying the requirements and how testing of key performance measures can take place at each
level of decomposition.
Your response:
Installing Apple Car Play Head unit in my car
-
HMI: The system comprises a touchscreen, various hardware components, and extensive
software, functioning as a subsystem through which end users can interact and control the
system. The implementation of the new touchscreen feature enables a reduction in the
number of physical buttons within the subsystem, mitigating the risk of premature button
failure.
-
Software Database: This component serves as the central hub of the system, responsible for
storing and managing various car play features such as maps, music, and other
miscellaneous programs. It can be considered the brain of the unit.
-
Cellphone: While the software database acts as the brain of the system, the phone can be
likened to its heart. This subsystem enables the database to access information from the
phone, enabling the system to function as intended.
-
Car: The car play subsystem facilitates user interaction with the system, while the speakers
assume control over audio output. Housed within the car, this unit is specifically designed for
car use, emphasizing its intended purpose.
Component-level testing is typically the most effective approach. When a system exhibits
irregular behavior, identifying the relevant component helps pinpoint the starting point for
testing. Additionally, user interactions with the car play system serve as continuous testing at a
certain level. In cases where a specific feature fails, testing can be targeted at the problematic
subsystem, shedding light on any underlying issues related to inter-subsystem communication
and deviations from the system's intended functionality. Out of the factory, several key
performance indicators (KPIs) can be measured for each system component, such as screen
responsiveness, phone system lag, and speaker clarity.
2.
Describe some of the considerations associated with the initiation of design changes resulting
from test and evaluation.
Your response:
This stage of the process is most receptive to changes, where risks and failure rates, akin to the
'bathtub' curve, should be duly considered. The objective of design alterations is to improve
product longevity and enhance overall reliability.
3.
What is the difference between verification and validation?
Your response:
Verification aims to provide evidence that the system or project operates according to the
defined scope outlined by the validation process. The validation process, on the other hand,
ensures that the project's scope aligns with market needs and requirements.
4.
Once your team has performed verification and validation, what is the next step?
Your response:
The next step involves careful planning to determine how the identified changes resulting from
testing will be implemented. This comprehensive plan should address the subsequent actions for
hardware, software, and financial aspects, as changes often lead to a slight growth in the
project's scope. Once this stage is completed, the implementation of the unit can be initiated.
5.
Why is understanding how the requirements are determined and managed so important for the
engineering manager?
Your response:
The engineering manager plays a pivotal role as the conductor of the project, leading and
overseeing the responsible team. Throughout the process, the team will frequently seek
guidance, both directly and indirectly, from the engineering manager regarding the next steps,
communicating requirements across the team, and ensuring everyone stays on track.
Maintaining project success heavily relies on the engineering manager's ability to effectively
manage all project components, as any inadequacy in this role could potentially lead to project
failure.
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