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mind map. sensor data - Coggle Diagram
mind map. sensor data
Sensors gather and generate information based on the physical conditions surrounding them. Sensors usually include the
following:
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Sensor data is the output of a device that detects and responds to some type of input from the physical environment.
The output may be used to provide information to an end-user or as input to another system or to guide a process
Sensor data is an integral component of the internet of things (IoT) and edge computing environments and initiatives.
The huge volume of data produced and transmitted from sensing devices provides a lot of information that is often
Types of sensors
Temperature sensors include thermocouples that indicate temperature measuring a change in voltage; infrared sensors that detect emitted infrared energy and infer temperature based on intensity; and semiconductors that detect temperature based on the conductivity of a semiconductor.
Proximity sensors detect either the presence or absence of a nearby object or material. Inductive proximity sensors sense the presence of a metallic object using an electromagnetic field. Photoelectric ones use a beam of light to detect objects. Ultrasonic sensors use sound to detect the presence of objects.
Gas sensors, like carbon dioxide sensors, detect the amount of an element in the air. Other examples of gas sensors are air quality sensors, which detect chemicals that indicate air pollution; breathalyzers which detect alcohol in the air; and humidity sensors which measure the air water content.
Level sensors include point-level sensors that measure the level of a liquid or dry material and indicate whether it is above or below what it should be. Continuous level sensors provide a continuous level reading.
Light sensors, such as light-dependent resistors, measure changes in circuit resistance to determine changes in light intensity.
Pressure sensors are devices such as a strain gauge, which has a spring element that changes shape as force is applied, affecting resistance and changing the pressure reading. Differential pressure sensors measure the difference between two pressures connected to each side of the sensor.
Chemical sensors include chlorine residual sensors that measure the amount of chlorine in the water. PH sensors check the hydrogen-ion activity in a solution to measure its acidity.
Biomedical sensors encompass medical devices, such as optical heart rate sensors, that use lightsensitive diodes to determine volume changes in the capillaries above someone's wrist. They also include pulse oximeters that shine a light-emitting diode light through the finger of a patient, analyze the character of the light and use that data to determine the amount of oxygen in the blood.
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