HOME  |  NEWS  |  BLOGS  |  MESSAGES  |  FEATURES  |  VIDEOS  |  WEBINARS  |  INDUSTRIES  |  FOCUS ON FUNDAMENTALS
  |  REGISTER  |  LOGIN  |  HELP
William K.
User Rank
Platinum
Re: Wireless and interference, A SERIOUS PROBLEM
William K.   6/28/2013 7:08:14 PM
NO RATINGS
What better way to nullify the effectiveness of a security system than to make it deliver false alarms several times a day. And a transmitter able to do that could be quite small and easily hidden. 

Of course the convenience of a wireless installation may be the overwhelming motivation for some folks, but in my opinion the reliability of a security system trumps easy installation by a large margin, and even trumps minimum cost by a fair amount. What good is an alarm system that is not working? It serves Only as a deterrent until the bad guys find out.

tekochip
User Rank
Platinum
Re: Wireless and interference, A SERIOUS PROBLEM
tekochip   6/28/2013 5:23:15 PM
NO RATINGS
If the control panel has not heard from a sensor, due to interference or whatever, that triggers an alarm, so the real issue becomes false alarms from interference.  That suggests the system is best suited for rather short distances, but at least it would be very easy to set up.


William K.
User Rank
Platinum
Re: Wireless and interference, A SERIOUS PROBLEM
William K.   6/28/2013 4:58:01 PM
NO RATINGS
Cabe, that sort of interference certainly happens in voice communications systems, so it could also happen in a data system. Frequency hopping through a wide rangee could help, but that adds a lot of cost and certainly would increase the battery consumption quite a bit. Of course, DARPA probably has a work-around solution that they are not talking about much.

Cabe Atwell
User Rank
Blogger
Re: Wireless and interference, A SERIOUS PROBLEM
Cabe Atwell   6/27/2013 11:16:42 PM
NO RATINGS
I agree with William. Couldn't someone with an RF transceiver just interfere with the sensors and render them useless thereby defeating the system all together?

C

William K.
User Rank
Platinum
Wireless and interference, A SERIOUS PROBLEM
William K.   6/7/2013 9:51:56 PM
NO RATINGS
Looking at the effect of interference from just a wireless headset,consider how simple it would be to have an intentional generator for interference to render all of the sensors ineffective. So the task of defeating a 2.4 GHz wireless system is almost trivial. But consider the effort to disarm even one properly wired sensor. So why waste time with a product that is so very easily defeated?

 

apresher
User Rank
Blogger
RF Trends
apresher   6/6/2013 8:32:54 PM
NO RATINGS
Excellent article.  Hopefully the advantages and simplicity of wireless, along with the detailed functionality outlined here, will open the door to better automation and control within the home.



Partner Zone
Latest Analysis
From home enthusiasts to workers on the manufacturing floor, everyone's imagination is captured by the potential of 3D printing. Prototyping, spare parts creation, art delivery, human organ creation, and even mass product production are all being targeted as current and potential uses for the technology.
ABI Research, a firm based in the UK that specializes in analyzing global connectivity and other emerging technologies, estimates there will be 40.9 billion active wirelessly interconnected “things” by 2020. The driving force is the usual suspect: the Internet of Things.
Just in time for Earth Day, chemicals leader Bayer MaterialScience reported from the UTECH Europe 2015 polyurethane show on programs and applications using its materials to help reduce energy usage. The company also gave an update on its CO2-based PU as that eco-friendly material comes closer to production.
Solar and wind energy are becoming more viable as a source of energy on the electric grid. For decades, the major drawback to solar and wind was that they’re temperamental. A cloudy day kills solar and a still day renders the wind turbines useless. Automation tools, however, are providing a path to help these renewables become practical.
In honor of Earth Day, the National Security Agency has launched the STEM Recycling Challenge in Maryland schools to encourage kids to think about where the garbage they throw out every day actually goes. The agency has also introduced “Dunk,” a muscular blue cartoon recycling bin wearing shorts and sneakers.
More:Blogs|News
Design News Webinar Series
3/31/2015 11:00 a.m. California / 2:00 p.m. New York
2/25/2015 11:00 a.m. California / 2:00 p.m. New York
12/11/2014 8:00 a.m. California / 11:00 a.m. New York
5/7/2015 11:00 a.m. California / 2:00 p.m. New York
Quick Poll
The Continuing Education Center offers engineers an entirely new way to get the education they need to formulate next-generation solutions.
Apr 20 - 24, Taking the Internet of Things to the Cloud
SEMESTERS: 1  |  2  |  3  |  4  |  5  |  6 |  7


Focus on Fundamentals consists of 45-minute on-line classes that cover a host of technologies. You learn without leaving the comfort of your desk. All classes are taught by subject-matter experts and all are archived. So if you can't attend live, attend at your convenience.
Last Archived Class
Sponsored by Proto Labs
Learn More   |   Login   |   Archived Classes
Twitter Feed
Design News Twitter Feed
Like Us on Facebook

Sponsored Content

Technology Marketplace

Copyright © 2015 UBM Canon, A UBM company, All rights reserved. Privacy Policy | Terms of Service