系统工程作业3

Users

Storageroom

Preparation Phase

Recycle bin

Store

(Buyer in Phase 1)

Start: December 26th morning End: Done decorating

Pattern

UtilizationPhase

Storage room

Take over

Pack

Force

Collect

Context Analysis

Useless parts

Functional RequirementsFR.8 The Christmas tree system should be easily dismantled.FR.9 The parts that are not available can meet the recovery requirements.FR.10 The recyclable part can accommodate the size of the storage room.

Post-processingPhase

Use Case Description1.The user collect the available parts and the non useful parts respectively.2.The recycle bin reclaims the non-useful parts.1.The recyclable parts are collected in the room for future use1. The user disassembled the Christmas tree system.

Light

Disposal of recyclable parts

Contact

Start: Done UtilizationEnd: Finish Processing

Disposal of useless parts

Start1: Purchase in the storeStart2: Done purchase

Reusableparts

Disassemble

Use Case Analysis

Christmas Tree System

Christmas TreeSystem

Physical RequirementsPR.6 The total weight of parts which can not be reused shall not exceed 5Kg.

Recyclebin