Application — Wireless Monitoring System

As the world goes wireless, innovations in the field are being invented at a rapid-fire pace. One of the latest breakthroughs is a new Vishay RFWaves wireless monitoring system that combines a stationary camera and a mobile display screen. With the new system, users can keep track of activity in one location while remaining completely mobile.

This wireless monitoring system, which Vishay RFWaves has developed along with a partner, features an excellent one-way video connection from camera to display screen, and a two-way, high-quality audio connection.

Typical Applications:
House intercoms
Video baby monitors
Home video monitoring systems
Office video surveillance

Key Features:
Flexible and easy to customize system - designed to support a wide range of custom requirements
High-quality compressed video - three levels of video standards are supported:
     - Q CIF resolution, up to 30 frames per second
     - Q VGA resolution, up to 20 frames per second
     - CIF resolution, up to 15 frames per second
Still images - still images in VGA, XGA or SXGA standards can be relayed instead of streaming video
Two-way audio communications - high-quality voice over the air at a frequency range of 300 Hz to 3400 Hz
High operating range - operates up to 100 meters indoor and 300 meters outdoors, thanks to Vishay RFWaves' RFW122-M-PA enhanced range transceiver
Long battery life - projected battery life for the headset is comparatively long because of the inherent power efficiency of the Vishay RFWaves transceiver, a superior power management design, and a robust software protocol
Multi-device networking - up to 255 Vishay RFWaves cameras can communicate with a single receiver
Co-existence - designed and tested to operate in the same area and to coexist with 802.11b, Bluetooth®, and other 2.4-GHz networks
Customer support - technical and general support are offered throughout the entire development and production process

System Operating Method:
The Vishay RFWaves wireless monitoring system is comprised of one or more remote units that communicate with a base unit. Each remote unit has a CMOS image sensor that captures a video stream or series of still images. The video stream, along with audio, is encoded in real time to MPEG4 by a Zoran ZR452x processor and transmitted to the base unit. The base unit, which controls which remote unit is active, decodes the video stream in real time and displays it on an internal LCD or external CRT monitor. The base unit can also store the video/images and audio to a MMC/SD card. The USB interface provides direct access to the stored data. Operators at the base unit are able to send audio back to the remote units.