Development of Android Based Laboratory Asset Monitoring and Inventory Application

Each laboratory has a person in charge (technician) that has a duty of serving the laboratory in term of operational and maintenance. The main task of a technician is to record and monitor the condition and completeness of laboratory equipment in the laboratory. The data collection process is done by writing a tool request form, therefore mistakes often occur. In this research, an Android-based laboratory asset monitoring and inventory application was made. By using the application, it is expected that technicians become easier to make any duties of reports including report of damaged laboratory equipments, request for reparation, the unavailable practical materials etc simply by using a Smartphone. Testing the application with the Black-Box testing method to investigate the function of each application component whether it is running well or not. The results obtained from the Black-Box test are the functions of each component were running as expected. The case study is conducted for Electrical Engineering Department at State Polytechnic of Ujung Pandang (SPUP) Keywords— Andorid, Black-box, Inventory Monitoring, Laboratory, Waterfall.


I. Introduction
According to the Education Law no. 12 of 2012, Polytechnic is a university that provides vocational education by implementing more practical learning than theory, with a percentage of 70% and 30% [1].
State Polytechnic of Ujung Pandang has a laboratory in each study program. Each laboratory has a person in charge (technician) who is in charge of maintaining the condition of the laboratory. The task of a technician is to record and monitor the condition and completeness of practicum equipment in the laboratory. If there is equipment that is damaged, the technician will record the equipment to be reported to the staff of the equipment and materials procurement department. The data collection Previously, the same research was made using the web [2], and this study will be developed using android [3], [4], and [5], with the waterfall method and black box testing [6] and [7]. The hope is that this application will make it easier for technicians to carry out tasks

A. Research Schedule
Research and design of monitoring applications and android-based laboratory inventory is conducted at the Ujung Pandang State Polytechnic (SPUP), Department of Electrical Engineering.

B. Research Stages
Stages or flow of research can be seen in Figure 1.    Figure 2 explains the general description of the application system that will be created, it can be explained that the user opens the application and then enters new data or updates the data. Then the application forwards the data and stores it in the database. The data is then seen by the admin. Vice versa, if there is data that is updated by the admin then the data is stored in the database and can be seen by the user. The user in this case is the technician and head of the laboratory, while the admin in this case is the procurement department. Information on the user side is only information related to what laboratories are responsible, while information on the admin side is data from all existing laboratories.

Use Case Diagrams
This diagram illustrates application users as well as what users can do on the application. In this system, users are required to have an account and log in first to the application, the application user consists of user and admin. As for what can be done by the admin and user can be seen in the following image. Basically, an activity diagram is an extended flowchart diagram to show the flow of control of one activity to another. This diagram is used for modeling the dynamic aspects of the system. The activity diagram of this system can be seen in the following image.

A. Application Design Results
The results of the design of the Android-based laboratory asset monitoring and inventory application.   Figure 9 displays the main page on the android application when the user has logged in. On the main page there is a navigation menu that will direct to the next page in accordance with the selected menu.   Figure 12 displays a list of laboratory inventory damage reports, where the data contained in the damage report is laboratory inventory data that is currently damaged. Figure 13. List of procurement and data added forms Figure 13 shows a list of laboratory inventory procurement requests and a form display if you want to add data. The procurement request list displays the name of the item, the specifications of the item, the number of items needed, the unit of goods, the price of the unit item, the total price of the whole item, and the name of the laboratory where the inventory will be stored.

B. Application Testing Results
Tests conducted on the application are black-box testing and application compatibility testing. Black-box testing is done to test application functionality. The results of black-box testing can be seen in Table 1. Compatibility testing is testing the system and application interface display on several different android devices. In this study the application was tested on 3 different android devices. Application compatibility test results obtained are the application runs in accordance with the expected function.

IV. Conclusion
Based on the results of the design of the monitoring application of assets and laboratory inventory that has been made, it can be concluded that all functions of the buttons, menus and systems in the application run as expected, that is, it can monitor assets and laboratory inventory properly so as to facilitate campus laboratory technicians in State Polytechnic of Ujung Pandang to report damage to goods or make a request for procurement of laboratory equipment and materials by accessing Android applications and web applications.