Elevator dispatching (pairing project) ①

Preface

In this project , Cuiwenguang and I choose to use Java Programming language to realize the simulation of elevator scheduling problem , And use JavaFX To make the graphical interface of the application .

One 、PSP form

PSP2.1	Personal Software Process Stages	Estimated time （ minute ）	The actual time consuming （ minute ）
Planning	plan
·Estimate	Estimated task time	20d	20d
Development	Development
·Design Spec	Generate design documents	120	120
·Design Review	Design review	60	80
·Coding Standard	Code specification	30	30
·Design	Concrete design	60	60
·Coding	Specific code	1000	1200
·Code Review	Code review	30	60
·Test	Code testing	60	60
Reporting	The report
·Test Report	Test report	60	90
·Size Measurement	Calculate the workload	30	30
·Postmortem & Process Improvement Plan	Post event summary , And propose process improvement plan	30	30
·	total

Two 、 utilize Information Hiding, Interface Design, Loose Coupling Knowledge design interface

“Information Hiding” For information hiding ,“Interface Design” Design for interface ,“Loose Coupling” Low coupling . This project adopts object-oriented design ideas , Lift 、 Entities such as passengers are abstracted into classes for encapsulation , And leave an interface for developers to call . At the same time, keep the modules of the project independent of each other , Reduce the connection between modules .

3、 ... and 、 Design and implementation of module interface

3.1 Passenger class

Passenger Class is used to abstract passengers , Including passenger weight 、 Starting floor 、 End floor and other attributes .

3.2 Elevator class

Elevator Class is used to abstract elevator , Including the maximum load of the elevator 、 The maximum number of people in the elevator 、 Elevator service floor 、 Opening and closing time 、 Upper and lower level running time and other attributes , At the same time, it defines how to make passengers enter GetPeopleIn()、 Make the passengers leave GetPeopleOut()、 The upside goUp()、 The downside goDown() Such as function .

3.3 EleController class

EleController Class is elevator group dispatcher , Four elevator objects in the problem are stored , And the request list of passengers who want to take the elevator , At the same time, it defines the request to add an elevator AddRequest()、 Find the nearest passenger in an elevator GetNearestPsg() Such as function , So that subsequent algorithm calls .

3.4 MainWindowController class

MainWindowController Class is the main interface controller . Because the three algorithms to be implemented in the future should provide services in the main interface , Therefore, this class contains functions that implement three scheduling algorithms respectively .

Four 、 Code specification and design specification

Before the project starts , Cuiwenguang and I have agreed on the code specification and design specification of the program , Such as the naming rules of member variables and member functions 、ui Interface control parent-child relationship rules 、 Which classes or variables must be mutually exclusive in multithreading , In order to improve the efficiency of subsequent development .