Alarm with motion sensor Miami Beach Coral Gables

Alarm with motion sensor Miami Beach Coral Gables

High power lights that illuminate all night tend to consume a lot of power which results in large electricity bills. Alarm with motion sensor Miami Beach Coral Gables. This is particularly true with remote flood lights that are bright and produce a lot of lumens. Also most solar lights aren’t able to work all night if they need to provide continuous illumination. To solve this problem a device called a motion sensor or motion detector is used together with a lighting fixture. Alarm with motion sensor Miami Beach Coral Gables.

Alarm with motion sensor Miami Beach Coral Gables

Alarm with motion sensor Miami Beach Coral Gables

What is motion detector and motion detection?

A motion detector or motion sensor is a device that is used for detecting a movement in a certain range in front or around the detector. Usually it is used to detect motion of humans and is used for both safety and security purposes. Alarm with motion sensor Miami Beach Coral Gables.

Motion detection is such a process, where a special sensor is used for detecting changes of different objects (mostly humans) in the sensor detection range that can either be an remote or an indoor area. The most basic motion detectors are able to detect movement of objects in an area from 2 – 5 meters (6.5 to 16 feet) up to 20 meters (70 feet) and more.

There are different types of motion detectors from infrared, optical to radio wave and others, and each of these types are used for specific occasions. Alarm with motion sensor Miami Beach Coral Gables. For example, infrared sensor monitor changes in infrared wave or heat in the observable area and turns on a light, alarm or a security camera when changes in the infrared spectrum are detected. Detectors that use radio frequency detection sends out microwave signals to monitor a room and when an object walks in detection area the sensor detects changes in microwave field and signals the system that there is a moving object in the room. Video cameras can also be used for motion detection by algorithmically comparing images, when someone walks into the room the picture and pixels changes and special algorithm can detect these changes. Alarm with motion sensor Miami Beach Coral Gables.

Where motion sensor are used?

Motion sensor are used together with some kind of other devices, such as security cameras, alarms or lightings. One of the most common usages of a motion sensor is together with an alarm system. Alarm with motion sensor Miami Beach Coral Gables. These alarm systems are installed in both individual properties as well as commercial buildings to detect motion of unwanted trespassers. When a burglar walks into the detection range of the sensor it automatically starts the alarm. Motion detectors are also used together with security cameras, when motion is detected the security camera is turned on to catch the person walking by the observed location. Alarm with motion sensor Miami Beach Coral Gables.

 

More advanced motion sensor are used in many new technologies, such as gaming consoles, smartphones, robotics and others. Alarm with motion sensor Miami Beach Coral Gables.

Automatic doors with a motion sensor

Besides previously mentioned applications, motion detectors are often used together with lights and lighting systems both for security and safety purposes. Alarm with motion sensor Miami Beach Coral Gables. When a person walks by an area which is monitored by the motion sensor, the light is automatically turned on at the moment, when a motion is detected. Motion activated lights are often used together with security cameras and alarms in security systems. Alarm with motion sensor Miami Beach Coral Gables.

Alarm with motion sensor Miami Beach Coral Gables

Alarm with motion sensor Miami Beach Coral Gables

The most popular type of motion lights is motion activated flood light. These lights are used for both safety and security purposes. Alarm with motion sensor Miami Beach Coral Gables. Motion activated remote flood lights are used for illuminating an remote area at night, starting from front door illumination to large parking lots. From safety aspect, these lights help to illuminate a dark area at night, so that a person can safely walk to desired place, and at the same time motion detector helps to save energy by turning the light on only, when someone walks by and turning it off after the person has safely walked to desired place. At the same time these lights can be used for security purposes to uncover a burglar from the dark and scare him away from your property. Alarm with motion sensor Miami Beach Coral Gables.

Occupancy sensor are used in indoor places to detect if there is a movement in the room and turn light on or off accordingly. These sensor help to save both individuals and companies significant amount of money on electric bills each year. Alarm with motion sensor Miami Beach Coral Gables.

Types of motion detectors

Motion detectors can be categorized in three types – active, passive and combined sensor. Each of these sensor respond to different actions and each are used in different situations. Alarm with motion sensor Miami Beach Coral Gables.

Active sensor

Active sensor use technique that sends signals or waves across the room or other place, where the sensor is installed and monitors the changes in wave response time. When an object moves in the detection area, micro or other types of transmitted waves collide with the object in the room and responds back to the detector much quicker. Motion detector is able to understand these changes and send an electrical signal to the alarm system, light or other type of device that is connected to the motion detector. Active sensor are used to detect any kind of motion in detection range, which means that wind moved tree branches could be regarded as movement and detected by the sensor, which then could trigger the remote lighting. Alarm with motion sensor Miami Beach Coral Gables.Active sensor that use microwaves for movement detection are mostly used in such applications as automatic doors on shopping malls and similar applications, but can also be found in house alarm systems and are used for indoor lighting systems. Alarm with motion sensor Miami Beach Coral Gables. Active motion sensor are not the best solution for remote lighting as movement of random objects such as wind-blown things, smaller animals and even larger insects can be detected by the active sensor and lightning will be triggered. Alarm with motion sensor Miami Beach Coral Gables.

Passive sensor

Passive sensor or PIR sensor (passive infrared sensor) in opposite to active sensor does not send out anything, but sits in the corner of a wall or other place and waits for the infrared light to reach the sensor. Alarm with motion sensor Miami Beach Coral Gables. Passive sensor scan the room or area it is installed for infrared heat that is radiated from living beings (actually heat is radiated from any object with temperature above absolute zero, most from humans). When a human walks into the detection area of a passive sensor, it detects heat emitted from that human and triggers alarm or turns on the light. Alarm with motion sensor Miami Beach Coral Gables. These sensor would not be effective if they could get activated by a small animal or insect that moves in the detection range, however most passive sensor can be adjusted to pick up motion of object with certain level of emitted heat, for example adjusting the sensor to pick up movement only by humans. Alarm with motion sensor Miami Beach Coral Gables.

Combined (Hybrid) sensor

Another motion sensor type that has become popular recently is combined or dual technology sensor that have a combination of both active and passive sensor. It activates light or alarm only in such occasion, when motion is detected by both active and passive sensor. Alarm with motion sensor Miami Beach Coral Gables.Combined sensor are useful for alarm systems to reduce possibility of false alarm triggers. Alarm with motion sensor Miami Beach Coral Gables. The most popular type of dual technology sensor combines a PIR and a microwave sensor. However this technology also has its downside. It cannot provide the same level of safety as separate PIR and microwave sensor, because alarm is triggered only when motion is detected by both sensor. So for example, if a burglar knows how to evade one of the sensor, his movement is going to be detected just by one sensor, no signal will be sent to the alarm system and it won’t be turned on. Alarm with motion sensor Miami Beach Coral Gables.

Active, passive or combined sensor for remote and indoor lighting

When looking at motion activated flood lights you may have come across a fact that there are very few manufacturers that indicate what type of motion sensor is used for the light. However, this is because the largest part of lights (especially remote lights) has passive infrared motion sensor. Alarm with motion sensor Miami Beach Coral Gables. And if you think more, it makes a lot of sense that passive motion sensor that use heat emitted from a human are a lot better suited for lighting than active sensor that sends and receives signals and detects changes in wave lengths. Active motion sensor can be found in some indoor lights and they are not the best solution for remote lighting as movement of random objects such as wind-blown things, smaller animals and even larger insects can be detected by an active sensor. Alarm with motion sensor Miami Beach Coral Gables.The light will get triggered much more times without a purpose, which will result in larger electricity consumption, will degrade light bulbs faster and may disturb you and your neighbors at night.

If you see that motion activated light is commercialized as „PIR sensor light” or „Light with a PIR motion sensor” you can be sure that this type of light uses a passive motion sensor. Alarm with motion sensor Miami Beach Coral Gables.

What a PIR detector is?

A PIR is a passive infrared motion sensor. It detects infrared energy, which is in a form of a temperature that is radiated from body of humans, animals and other objects. A PIR sensor can detect motion in certain distance and angle, so PIR sensor have different working areas. Alarm with motion sensor Miami Beach Coral Gables.

PIR sensor are simple electronic devices and their only job is to detect changes of infrared radiation in form of a heat from detection area. Infrared light moves electrons in the sensor, which are captured and amplified in an electrical signal. This signal then is used to alert the alarm system or trigger a motion light to start illuminating. PIR sensor structure is pretty simple and consumes little energy and most basic sensor cost just few bucks, so they are widely used in security systems for homes and businesses as well as indoor and remote lights and lighting systems, and also are used in robotics and other industries. Alarm with motion sensor Miami Beach Coral Gables.

A PIR motion detector

PIR sensor can have different adjustable settings. For example, some motion detectors can be set to respond to energy in varying temperatures. For example, a PIR sensor can be set to respond only to 10-12 μm (micrometer or micron) radiation, which is the average from a human body. Alarm with motion sensor Miami Beach Coral Gables. This way the sensor will not detect motion of smaller animals like dogs and cats. Some sensor are so sensitive that they can pick up a heat emitted from birds and larger bugs and the light is turned on after motion detection.

In what application PIR detectors are used?

PIR sensor same as active sensor are mostly used in security alarm systems to detect thieves and trespassers. Alarm with motion sensor Miami Beach Coral Gables. There are even some special pet immune motion sensor that are used in indoor alarm systems and can be set to ignore animals at specific weight. PIR sensor are often used together with active microwave sensor in security systems, to prevent false alarms triggered by one or other sensor. Alarm with motion sensor Miami Beach Coral Gables.

Besides alarm systems, PIR sensor are often used in motion activated lights. This includes both indoor and remote lights. Alarm with motion sensor Miami Beach Coral Gables. PIR detectors are very popular combination with remote flood lights, as they tend to consume lot of energy because of their brightness, and a motion sensor helps to save energy and money by turning the light on only when a motion is detected in front of the light. PIR sensor are also used in solar lighting. Solar lights work on batteries that get charged in day by sunlight and power the light at night. Based on the size of the battery lights can provide continuous illumination from couple of minutes to few hours and larger lights can even work for all night. To prolong the illumination period solar lights are often equipped with a motion sensor. With help of a motion sensor lights that have batteries with capacity of less than an hour or even less than a half an hour can provide illumination for all night if used in an area, where the light needs to be turned on just few times at night, for example, when used as a front door light. Alarm with motion sensor Miami Beach Coral Gables.

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