What is the difference between Analog and Digital Sensors?
Sensors are ubiquitous in the world we live in. They are used in a wide range of applications, from measuring temperature and humidity in a home thermostat to detecting the presence of objects in an autonomous car. When it comes to sensors, they can be broadly categorized into two types: analog and digital sensors. In this story, I will explore the key differences between these two types of sensors.
Analog Sensors:
Analog sensors are the sensors that measure a continuous physical quantity such as voltage, current, temperature, and pressure. They provide a continuous output signal that varies with the physical quantity being measured. The output of an analog sensor is a voltage or current that can be read by a microcontroller or analog-to-digital converter (ADC).
Analog sensors use a range of technologies to measure the physical quantity, including strain gauges, thermistors, and piezoelectric sensors. These sensors work by converting the physical quantity into an electrical signal that varies in voltage or current.
Example:
Electromyography (EMG)
Electrocardiography (ECG)
Electrodermal Activity (EDA)
Electroencephalography (EEG)
