{"id":802,"date":"2021-08-31T17:10:00","date_gmt":"2021-08-31T17:10:00","guid":{"rendered":"http:\/\/lumoscontrols.com\/resources\/?p=802"},"modified":"2023-01-03T12:17:07","modified_gmt":"2023-01-03T12:17:07","slug":"microwave-vs-pir-motion-sensors","status":"publish","type":"post","link":"https:\/\/lumoscontrols.com\/resources\/microwave-vs-pir-motion-sensors\/","title":{"rendered":"Microwave Vs PIR Motion sensors – What’s the difference and how do they work?"},"content":{"rendered":"\n
\"Microwave<\/figure>\n\n\n\n
A motion sensor is a device used for identifying moving items especially human beings. It is used to control lighting as well as automate the operations related to other connected devices. Passive Infrared sensors and microwave sensors are the two commonly used types of motion sensors for occupancy and intrusion detection. <\/em><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

Introduction<\/h3>\n\n\n\n

Due to the rising concern regarding safety security and efficiency, motion sensors have been gaining momentum over the years. It is a widely installed device to control individual fixtures or network systems for interior illuminations and security in residential spaces, commercial building industrial facilities, and exterior illuminations in areas like parking, walkways, pathways, and driveways.<\/p>\n\n\n\n

 
Before going any further, we must understand what a motion sensor is and its application in the real-time world. <\/p>\n\n\n\n

What is a motion sensor? <\/h4>\n\n\n\n

A motion sensor is defined as an electronic device designed to capture the movements of an object of interest within a specified parameter and convert them to electrical signals to automate the operations of other connected devices. <\/p>\n\n\n\n

Nowadays, many popular IoT applications found in commercial buildings are incorporated with motion sensors.  From security systems to lighting, motion sensors are regarded as an effective method for energy-saving and data gathering. The most frequently used motion sensors in IoT applications are Passive Infrared (PIR)<\/mark><\/strong><\/a>  <\/strong>and Microwave sensors. <\/p>\n\n\n\n

Motion sensors are required in any well-designed commercial space and to know why they are a must! Check out this blog<\/mark><\/a>! <\/em><\/p>\n\n\n\n

What is a PIR motion sensor? <\/h3>\n\n\n\n

A Passive Infrared sensor (PIR), is an electronic device capable of measuring infrared light radiated from objects within its line of sight. It is used in motion detectors to sense the movements of people, animals, or other objects. They are commonly used in burglar alarms or automatically-activated lighting systems. <\/p>\n\n\n\n

How it works? <\/h4>\n\n\n\n

A pyroelectric sensor is the main component of a motion sensor. Humans and animals emit heat energy in the form of infrared radiation. A PIR motion sensor has a pair of pyroelectric sensors to detect heat energy from the surrounding environment.  It helps generate an electrical signal when they are heated or cooled. <\/p>\n\n\n\n

In a PIR motion sensor device, both the sensors are placed beside each other. The sensor module also consists of a specifically designed cover called Fresnel lens that helps focus the infrared signals onto the pyroelectric sensor. <\/p>\n\n\n\n

\"PIR<\/figure>\n\n\n\n
When Unoccupied <\/strong> <\/h5>\n\n\n\n

When a space is unoccupied, the pyroelectric sensor does not detect any change in temperature and would remain idle.  <\/p>\n\n\n\n

When Occupied  <\/h5>\n\n\n\n

When the human or animal body gets into the sensors range, the infrared signal difference between these two pyroelectric sensors will trigger the lights to turn on. <\/p>\n\n\n\n

\"PIR<\/figure>\n\n\n\n

Benefits of PIR motion Sensor <\/h4>\n\n\n\n