Types of sensor

RFID (radio frequency identification) is a form of wireless communication that incorporates the use of electromagnetic or electrostatic coupling in the radio frequency portion of the electromagnetic spectrum to uniquely identify an object, animal or person. Use cases for RFID technology include healthcare, manufacturing, inventory management, shipping, retail sales and home use. RFID and  barcode  technology are used in similar ways to track inventory, but three important differences make each one a better choice in certain situations: RFID tags do not require a direct line of sight to be read. Data stored in an RFID tag can be updated in real-time. In contrast, bar code data is read-only and cannot be changed. RFID tags require a power source. In contrast, bar codes only require the technology reading the bar code to have a power source. How RFID works Every RFID system consists of three components: a scanning  antenna , a  transceiver  and a...

Types of Robot Sensors There are different sensors to choose from and we will identify the characteristics of few sensors, and also understand why and where they are used. Light sensors A Light sensor is used to detect light and create a voltage difference. The two main light sensors generally used in robots are Photoresistor and Photovoltaic cells. Other kinds of light sensors like Phototubes, Phototransistors, CCD’s etc. are rarely used. Photoresistor is a type of resistor whose resistance varies with change in light intensity; more light leads to less resistance and less light leads to more resistance. These inexpensive sensors can be easily implemented in most light dependant robots. Photovoltaic cells convert solar radiation into electrical energy. This is especially helpful if you are planning to build a solar robot. Although photovoltaic cell is considered as an energy source, an intelligent implementation combined with transistors and capacitors can convert thi...