5.CONCEPT EVALUATION AND PRODUCT ARCHITECTURE - P-Div-Engg-Exploration-Odd-2026-27/Repo-13 GitHub Wiki

PUGH CHART

##5.1

JUSTIFICATION FOR SCORE GIVEN

Task 3: Justification for the Scores Given

Design No.	Objective	Score Allocated	Justification for the Score
1	Safety	+	Safe for stationary use; no moving parts that could cause harm.
1	Ease of Use	−	Requires gesture recognition, which may be less intuitive for some users.
1	Portability	−−	Stationary design without wheels; difficult to move.
1	Use of Standard	0	No clear adherence to standard components or protocols.
1	Cost	+	Economical because it uses a simple sensor and display setup.
2	Safety	Datum	Baseline safety; moving head and wheels are manageable with proper control.
2	Ease of Use	Datum	Touch display and voice interface make the bot user-friendly.
2	Portability	Datum	Wheeled design allows movement within a building.
2	Use of Standard	Datum	Uses standard motors, sensors, and display components.
2	Cost	Datum	Balanced cost because of multiple integrated features.
3	Safety	++	Stable quadruped design reduces the risk of tipping.
3	Ease of Use	++	Voice interface and detection sensors improve user interaction.
3	Portability	−	Mobile but bulky; difficult to carry and transport.
3	Use of Standard	+	Uses standard servo motors and sensors.
3	Cost	+	Relatively high cost due to multiple servo motors and sensors.
4	Safety	−	Vertical lifting mechanism may create mechanical risks if not properly controlled.
4	Ease of Use	++	Simple welcome display and guided lifting mechanism make it easy to use.
4	Portability	−	Fixed vertical platform makes the design difficult to move.
4	Use of Standard	0	Lead-screw mechanism is commonly used but requires specialized components.
4	Cost	+	Relatively cost-effective because of the simple mechanical mechanism.

Score Legend

Score	Meaning
++	Very Good
+	Good
0	Average / Neutral
−	Poor
−−	Very Poor
Datum	Reference Design

##5.2

SELECTED DESIGN

DESIGN 3

##5.3

PRODUCT ARCHITECHTURE

Person detected → Sensor sends signal → ESP32 processes it → Bot greets the person → Display shows information → Speaker provides voice assistance.

##5.4

FUNCTION CLUSTERING

Activity 3: INTERACTIONS BETWEEN SUB-SYSTEM

Subsystem	Interaction Aspect	Subsystem 1	Subsystem 2	Interaction Details
Subsystem 1	Spatial	—	—	Positioned on the head/front and aligned to the user's gestures.
Subsystem 1	Data	—	—	Gesture signals are processed and trigger screen/voice responses.
Subsystem 1	Material	—	—	No specific material interaction.
Subsystem 2	Spatial	Display located centrally and visible to the user.	Integrated in the torso and linked to the control hub.	Central torso display and speaker.
Subsystem 2	Data	Receives processed gesture signals and outputs text/voice.	Control unit sends commands to screen/voice outputs.	Control Unit → Display/Voice.
Subsystem 2	Material	None	None	No specific material interaction.
Subsystem 3	Spatial	Internal hub connecting sensors.	Internal wiring links to display/speaker.	Internal central hub.
Subsystem 3	Data	Receives gesture data, interprets it, and makes decisions.	Sends processed instructions to outputs.	Input (gestures/voice) → Output (screen/voice).
Subsystem 3	Material	None	Electrical power supply.	Electrical power supply.