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Another example of a temperature sensor used in robotics is a Resistance Temperature Detector (RTD). An RTD
is a type of temperature sensor that uses the change in electrical resistance of a metal wire with temperature.
Typically, platinum or nickel is used as the sensing element. As the temperature changes, the resistance of the
wire changes, and this change can be measured to determine the temperature. RTDs are known for their high
accuracy and stability over a wide temperature range. They are often used in robotics for precise temperature
measurement in applications such as thermal mapping, temperature control in manufacturing processes, or
environmental monitoring.
For instance, a robot working in a controlled environment may be equipped with RTDs to monitor the ambient
temperature and ensure that it remains within specific limits for optimal operation.
Other types of temperature sensors used in robotics include thermistors, which are temperature-sensitive
resistors that exhibit a large change in resistance with temperature, and infrared temperature sensors, which
measure temperature by detecting the infrared radiation emitted by objects.
Different Types of Temperature Sensors
RTD Thermistor
Thermocouple
Semiconductor Thermopile Liquid
Based
Thermometer
Brainy Fact
The Institute of Science and Technology, Korea created a sprinting robot named Raptor. The robot
is designed to sprint faster than a human, running as fast as 46 kilometers per hour. Above all, this
robot is inspired by the Velociraptor, a dinosaur from the Cretaceous Period which can run up to
64 kilometers per hour
Range and Proximity Detection Sensors
The range and proximity detection sensors are types of sensors used in robotics to measure the distance between
the robot and objects in its environment. They provide information about the proximity of objects, allowing the
robot to detect obstacles, navigate safely, and perform tasks requiring accurate distance measurements. Let’s
explore two examples of range and proximity detection sensors commonly used in robotics—ultrasonic sensors
and infrared sensors.
• Ultrasonic Sensors: Ultrasonic sensors use sound
waves to measure distance. They emit high-
frequency sound waves and measure the time it
takes for the sound waves to bounce back after
hitting an object. By knowing the speed of sound in
the medium, the sensor can calculate the distance
to the object.
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