Low-cost, Effective Wireless Security Solution
|Security hub inducted into an ordinary modem/router|
The wireless security hub by Maven Systems is a security solution for homes and small offices that can detect and report fire, gas leakage or intrusion. The alerts are almost real-time (within minutes of the detection), and the information reaches the owner, neighbours and security guards in the housing colony or workplace almost instantaneously.
Suhas Jain, project manager, Maven Systems, says, “Safety and security is a must-have in today’s world. However, most of today’s systems require advanced planning to install such systems. This means existing houses need chiseling of walls for laying additional cables. Owners are looking for a solution which doesn’t require any new wiring, yet takes maximum advantage of their telecom and Internet connectivity.”
The wireless security hub houses a host of components to communicate intrusions and other security parameters to the respective devices:
RF adaptor. The hub makes use of an adaptor that connects via USB to the Wi-Fi router. The adaptor now communicates with other radio frequency (RF) sensors used, viz, door sensor, motion sensor, smoke sensor and occupancy sensor. It houses Texas Instruments’ MSP430 microcontroller unit as well as the RF CC1101 chipset interfaced over serial peripheral interface (SPI) to the MSP430.
The RF adaptor communicates with the OpenWrt module router over a universal asynchronous receiver/ transmitter (UART). The data received from the RF module is used by the application in the OpenWrt router to send a notification to all the connected devices.
Door sensor. This sensor uses a TIMSP430 MCU and a CC1101 chipset. It sends messages to the router and to all connected devices in the area.
Motion sensor module. It uses a motion sensor incorporating TI’s CC1101 chipset. The wireless communication is done over sub-1GHz RF.
The most distinguishing part of this product is that you don’t need a control panel at all. The product makes use of a Wi Fi access point as the burglar alarm panel. Wireless repeaters are provided to boost the range. Enduser touch points are smartphones like iPhone, BlackBerry and Android phones.
“When leaving home, the owner puts the system in ‘arm’ mode, which basically activates the security features and enables all the sensors. In case any sensor detects an event (such as opening of the door, movement or breaking of glass), it waits for 30 seconds to allow the user to enter valid pin. If that does not happen, it sends a distress signal to the home owner, neighbours and the security guard(s) of the colony,” adds Dhananjay Kulkarni, project manager, Maven Systems.