How Does a Motion Sensor Work?

Motion sensors have become a staple among many home security systems. Most of us are familiar with motion detectors, as they allow us to dry our hands without pressing a button or enter a store without touching the door. But how do they work?

There are two types of motion sensors: active and passive. Active sensors inject energy into the environment to detect a change. When you step into this field of energy as you approach the grocery store, a sensor notices that the amount of reflected energy has changed, and uses this signal to open the door.  Active sensors can also work with sound, as they emit pulses of sound higher than humans can hear and read the resulting echoes to detect a change in movement.

Passive sensors detect body heat, or infrared energy. When it senses a change of heat within its field of vision, the sensor signals the alarm to trigger. To avoid false alarms, passive sensors are sensitive to the temperature of the human body (which equals infrared energy with a wavelength between 8 and 12 micrometers).

Often, motion sensor alarms will have more than one type of detection device. This helps to avoid false alarms. Today, most motion sensor alarm systems are wireless and include other features, such as pet immunity (ignoring moving figures that are up to a certain weight).

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Safety and Security in the Workplace

Threats to the workplace can be more common than we’d like to think. Today, threats to the workplace can come from almost anyone: clients, contractors, employees, or even members of the public that aren’t associated with your business. We’ve gathered some brief tips on how to help ensure safety at your workplace.

• Conduct a safety training so employees know the steps to take for themselves in case of danger. This includes developing and emergency exit procedure.
• Ensure there is adequate lighting in the parking lot and around entrances.
• Don’t leave valuables at the office without locking them up. Keep in mind that thieves seek items of value that can easily be stolen, such as laptops.
• Keep all master keys locked in a security office.
• Encourage staff members to approach
• unrecognized visitors.
• Ensure that there are no entrances to the building that would allow someone to enter without providing identification or passing security.
• If serving customers in your building, the reception desk should be immediately inside the entrance. Arrange a barrier between customer waiting and employee areas.

      One of the most important ways to protect your business and employees is with an updated security system. Surveillent is proud to provide network cameras and other security equipment for small businesses at affordable prices.