Student Projects
Contact Information
University: University of Yaounde (ITT3)
Team Members (with year of graduation): (1) MBOKE LIVO KEVIN FRANCIS, (2) ANDELA MESSINA ARMAND FABRICE, (3) KOMBE BOM II CLEMENT THIERRY
Faculty Advisers: Mr. Fogang Aristide Bruno
Email Address: senomatcameroon@gmail.com
Submission Language : English
Project Information
Title: SENOMAT (Sensor Network for Observation and Management of Traffic)
Description:
Abstract
The development of urban cities in sub-Saharan Africa offers a plethora of interactions between the different actors of this emergence. It consists of firms, states and private individuals which use the transport network to enable the transit (movement) of goods, and person (people). This situation poses a new logistic problem to governments, which have the endeavor to find solutions beyond that of infrastructure renewal (renovation). It consists of putting in place efficient management strategies of the resources present in order to maximize (optimize) the yield of these transport networks.
The SENOMAT project comes as a tactical solution amongst orders enabling an increment in the yield of existing infrastructures. It consists of deploying a network of road sensor on major roads and road intersections. Using these sensors, important information on how fluid the channels are, is collected, and processed and the results will be transmitted to the different actors concerned. Hence, the problem of bottle necks on roads will be better handled. The experimental project would be a restricted network with a single node transmitting data to the NI WSN-9791 or NI WSN-9792 gateway, the other nodes communicating with the main node. The main node will sample the signal which it receives and will carry out other processing using a VI (Virtual Instrument) programmed by aid of Pioneer NI Labview WSN module. The data from the main node will be transmitted to the gateway which will be make the link with the application (programmed with Labview) hosted in the computer which serves as the main station. Depending on the type of gateway supplied, the users will receive the information on different formats (LED screen, web sites, mobile applications or GPS system). Information will be also used by hospitals and police for emergency.
Products
Supplementary resources:
- 04 Wireless Sensor Network Measurement Nodes NI WSN-3202
- 04 infrared sensor (PIR) from « Parallax Technologies »
- 01 Gateway NI WSN-9791 or NI WSN-9792
- 04 external enclosure WSN
- 2 packs of 4 AA batteries
- 01 programmable LED screen (*)
- Ethernet wire
- NI screwdriver
- NI Measurement & Automation Explorer (MAX)
- LabView Wireless Sensor Network (WSN) Module Pioneer
- Module LabView real-time
- 03 Android devices. (*)
Expérimental project archtecture
Every NI WSN-3202 node is on the sidewalk and is equiped of PIR sensor for data acquisition. The main node firstly process the data and send the result to the supplied gateway. The gateway sends data which come from main node to the workstation and receives results for broadcasting. The subscribers to our traffic’s information service can access to data with their different devices.
Final architecture using mobile telephone network (*)
(*) The project we want to implement is the miniature of final solution. We want to show how to make this possible using the NI WSN hardware and software.
Project introduction
The traffic jam is a major social problem which preoccupies the Cameroonian government. This problem can’t actually be solved because of limited economical funds (Cameroon is already a poor country) or because of the practice used to resolve it.
The SENOMAT project put up with the reality of the country by proposing “THE” solution which is economically profitable and efficiently working. It use a logic infrastructure supported by existing architecture. The power supply is minimized and the installation cost is highly reduced.
The data on the different roads condition in terms of circulation rate are directly transmitted to different network devices as indicated in above pictures. It going to be the first common application using new possibilities offered by networks migration. Cameroonian society will be introduce to the result of the union between newly updates networks and the efficiency of National Instruments products.
The NI material is used in all the phases of the project from the analogical signal acquisition to the getting of results under different formats.
The entrance analogical node NI WSN-3202 will be at the entrance of the network because it has the role of sensor backup
The Labview Real Time will allow handling the high data rate coming from nodes.
The Ethernet Gateway NI WSN-9791 will be the exit of our WSN towards several receptor interfaces.
DESIGN METHODOLOGY
First of all we will need to make a location of key areas. There are crossroads offering information on the conditions of many roads. If this operation is correctly realized, it will efficiently reduce the cost of project launch and also increase the accuracy and the results’ truthfulness.
The second step is devices installation. Certain studies of CENS(Center for Embedded Network Sensing) of UCLA(University of Los Angeles) show that the best position of sensor is on top of streetlight next to bulbs. This position warrants a best coverage of the area and maintains the equipment far from people.
Every zone consists of a main node which consists of a sensor and components required to receive signals of other nodes, make a primary manipulation and send the result to the higher level.
The main nodes will send data either throughout a cable or a wireless connection. For this second case two options are possible:
- Put a modem on the main nodes to exchange data throughout a MAN(Metropolitan Area Network)
- Insert a SIM in the main node in order to transport data towards an existing network
The signals will be transport in a data handling room where servers executing the VI will manipulated data and these data will be delivered to a distribution unit.
DESIGN ARCHITECTURE
Building an application is not really an easy matter. To succeed in this task, it is important to organize our ideas and establish the achievement defining the modules and steps of realization. This step comes before coding and is named modeling; the result of this step is model. We will present the diagrams made in modeling.
- use case diagram
Use case diagram insure the relationship between user and objects that the system uses. It allows to collect, analyze and organize the needs and to list the functionalities of system. The system administrator has to identify himself in order to realize all the tasks specified below.
- deployment diagram
This diagram is a description of interactions between the objects constituting the system. Our deployment diagram will focus on the interactions between objects. The Backup server is able to keep data on all system’s operations. The acquisition unit is a set of nodes making the data acquisition network.
FUNCTIONNAL DESCRIPTION
The process is divided in three great phases that are acquisition, handling and delivery of result.
In acquisition phase, analogical signal is transformed in a binary word as shown in the picture below:
The configuration of nodes supporting sensors is made respecting the logical disposition below:
CONCLUSION
The SENOMAT project is just an application among other of the multiple possibilities offered by labview and and all other product of National Instrument. Its installation will be a great step towards the improvement of Cameroonian’s life conditions and also a technological progress which will propel Cameroon to emergence.
