Intrusion and access control systems employ video, wireless, and/or audio signals for monitoring purposes in end-products such as baby monitors, video doorbells, car access systems, finger biometrics, glass break monitors, and intelligent occupancy sensing. These systems are concerned with monitoring access to secured areas, be that a baby’s room, a car, or a conference room.
Texas Instruments delivers the high-performance DSPs, MCUs, video processors, power management devices, converters as well as many other devices needed for intrusion and access control systems.
Baby monitors and video doorbells capture and display video of a baby or door, respectively. A camera and microphone capture audio and video that is then transmitted to the receiver while a talk-back audio system allows the parent or homeowner to talk to the baby or visitor.
A car access system allows the driver to remotely unlock or lock their vehicle as well as set off the security alarm. Newer car access systems also allow the driver to remotely start the vehicle or roll down windows to allow the car to come to a comfortable temperature before entering.
Fingerprint biometrics enable the recognition of fingerprints to allow access to a secure device, such as a computer, USB or door lock. Glass break detectors monitor audio signals for matches to the high pitch sound of glass breaking. When it determines that the glass has been broken, the appropriate signal can be sent to an alarm or other monitoring device.
Intelligent occupancy sensing has been evolving in recent years. Older systems use IR sensors to monitor for movement in a room to activate the lighting, HVAC, etc. only when people are in the room, resulting in energy and cost savings. Newer intelligent occupancy sensing systems are video based systems that utilize DSPs to recognize even minute motions as well as analyze how many people are in the room. With this information, the system can appropriately set the lighting and HVAC system to match the true requirements of the people in the room.
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