Question

Advantages in static deployment of sensor node in wsn

Answer 1

Advantages:

Network setups can be done without fixed infrastructure

· Ideal for the non-reachable places such as across the sea, mountains, rural areas or deep forests

· Flexible if there is an ad hoc situation when a supplementary workstation is required.

·the cost of implementation is very cheap.

Explanation:

A wireless sensor network (WSN) consists of hundreds to thousands of low-power multi-functional sensor nodes, operating in an unattended environment, and having sensing, computation and communication capabilities.

The necessary components of a node are a sensor unit, an ADC (Analog to Digital Converter), a CPU (Central processing unit),  a power unit and a communication unit.

Sensor nodes are micro-electro-mechanical systems (MEMS) that produce a measurable response to a change in some physical conditions like temperature and pressure. It is measures physical data of the area to be monitored.

The continual analog signal capture by the sensors is digitized by an analog-to-digital converter and then send to controllers for further examination. it is very small in size, that is why it consumes very low energy, are operated in high volumetric densities and can be autonomous and adaptive to the environment.  Several sources of power consumption in sensors are:

(a) Signal sampling and conversion of physical signals to electrical ones;

(b) Signal conditioning, and

(c) Analog-to-digital conversion.

There are three categories of sensor nodes:

1. Passive, Omni Directional Sensors.
2. Passive, narrow-beam sensors
3. Active Sensors.

The advantages and of wireless sensor networks can be summarised as follows:

Advantages:

Network setups can be done without fixed infrastructure

• · Ideal for the non-reachable places such as across the sea, mountains, rural areas or deep forests
• · Flexible if there is an ad hoc situation when an additional workstation is required.
• · Implementation cost is cheap

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