HOME  |  NEWS  |  BLOGS  |  MESSAGES  |  FEATURES  |  VIDEOS  |  WEBINARS  |  INDUSTRIES  |  FOCUS ON FUNDAMENTALS
REGISTER   |   LOGIN   |   HELP
Feature
Electronics & Test

RF Trends in the Alarm & Security Market

NO RATINGS
Page 1 / 2 Next >
View Comments: Newest First|Oldest First|Threaded View
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
Today's robots should be respected, and humans should be wary of their growing skills and sophistication. Quite simply, robots are better than us in a lot of ways. Here are 10 of them.
3D printing has met up with drones in a 3D-printed UAV. University of Sheffield engineers printed the prototype drone in 24 hours from ABS plastic using Fused Deposition Modeling.
Product design is changing with advances in technology and outsourced manufacturing. The Art of Product Design spells out the future of design engineering.
AMD is set to launch the industry's first 16 GB workstation graphics card -- the W9100.
Samsung's 5th-generation Android-based Galaxy smartphone includes a fingerprint scanner, updated camera and display, and water/dust resistance.
More:Blogs|News
Design News Webinar Series
3/27/2014 11:00 a.m. California / 2:00 p.m. New York / 7:00 p.m. London
2/27/2014 11:00 a.m. California / 2:00 p.m. New York / 7:00 p.m. London
12/18/2013 Available On Demand
11/20/2013 Available On Demand
Quick Poll
The Continuing Education Center offers engineers an entirely new way to get the education they need to formulate next-generation solutions.
Apr 21 - 25, Creating & Testing Your First RTOS Application Using MQX
SEMESTERS: 1  |  2  |  3  |  4  |  5


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.
Next Class: April 29 - Day 1
Sponsored by maxon precision motors
Learn More   |   Login   |   Archived Classes
Twitter Feed
Design News Twitter Feed
Like Us on Facebook

Sponsored Content

Technology Marketplace

Datasheets.com Parts Search

185 million searchable parts
(please enter a part number or hit search to begin)
Copyright © 2014 UBM Canon, A UBM company, All rights reserved. Privacy Policy | Terms of Service