Types of Sensor
Sensor is the device that detects the environment temperature, pressure, motion, light, humidity.
Key features of sensor:
Sensitivity: The ability of sensor detect the small changes in the measured quantity and produce a corresponding output signal.
Accuracy: The sensor’s output matches the true value of the measured parameter.
Range: Measures within specified minimum and maximum limits.
Resolution: The smallest changes in the parameter the sensor can be detected.
Response time: sensor reacts quickly changes to input.
Stability: ability of the sensor to maintain consistent performance over time.
Communication: Integrates easily with networks and systems.
Types of sensor:
Temperature sensor: Temperature sensor is the device that can be designed for measure the temperature and convert it into an electrical signal that can be read, processed, or monitored.
Proximity sensor: A proximity sensor is a device that detects the presence, absence, or distance of an object without requiring physical contact.
Pressure sensor: A pressure sensor is a device that measures the force exerted by a fluid on a surface and converts it into an electrical signal for analysis or control.
Motion sensor: Motion sensor detects movement in an area converts into signal for action and monitoring.
Light sensor: Light sensor is the device that detects the light intensity in its environment and convert the information into an electrical signal that can be processed by system.
Humidity sensor: humidity sensor is a device that measures the moistures and water vapour present in air. It converts the data about humidity levels into an electrical signal for monitoring or control purposes.
Gas Sensors : Gas sensor is a device that detects the gas presence or leakage the thegas in the environment .
Ultrasonic Sensors: An ultrasonic sensor is a device that uses sound waves to detect the distance between the sensor and an object. These sensors emit high-frequency sound waves and measure the time it takes for the sound waves to echo from the object.
Magnetic Sensors: It is a device that detects changes in magnetic fields and converts them into electrical signals for measurement or control purposes.
Optical Sensors: Optical sensor that detect the light these sensors are widely used in various applications to detect the presence of objects, measure distance, and monitor light conditions.
Force Sensors: A force sensor is a device that detects and measures the force applied to it, converting this physical force into an electrical signal that can be qualified.
Sound Sensors: A sound sensor detects sound waves in the environment.
Factors affecting to the sensor:
Temperature: Extreme temperature can be affected sensitivity and accuracy of sensor.
Humidity: High humidity can lead corrosion in the sensor.
Accuracy: The degree of closeness between the measured value and the true value.
Response Time: The respond of the sensor is depend on the time is required to the sensor.
Voltage/Current Requirements: Sensors must operate within their specified power supply limits.
Type of Medium: Whether the sensor measures air, liquid, or solid can impact its effectiveness.
The choice of sensor depends on:
- Size and Weight, Cost
- Integration and Compatibility
- Sensitivity
- Response Time
- Measurement Range
- Environmental Conditions
- Accuracy and Precision
- Physical Quantity to be Measured
Application of Sensor:
Agriculture
Automotive industries
Consumer Electronics
Energy and Power Generation
Environmental monitoring
Healthcare and Medical Devices Industrial Automation
Robotics and Automation
