SecuringPerimeter

http://scratchpad.wikia.com/wiki/Sasecurity

Flexopower
http://www.flexopower.com sells a personal video display goggle that weighs 300g as described in Popular mechanics p.45 Aug. 2006 edition. The i-Theatre(R2000) has an RCA jack that accepts analogue video. Place a Watec camera/Roithner LED/laser on your head and you have a nightvision system who's power depends on the size of your battery pack. Strap a www.mini-itx.com pc board on a guard and using GPRS you can see instantly what he sees. See EmbeddedPc for dc-dc converters.

www.eaglecctv.co.za will be able to provide more info on the setup as described. They sell a HUD unit that straps unto the head that are used by Boeing technicians The laser I am refering to is an Infrared-Laser or Infra-red LEDS (less distance). The lasers though are very expensive and for most purposes the LEDs should suffice.

In tests Eaglecctv did they took a 1/2 inch CCD camera (Watec's are double the sensitivity) and connected it to a 1200mm Lens. Using a 840nm Infra-red laser they were able to see Unisa from Voortrekker Monument at night. A picture of the laser can be found at Roithner's website as posted in this thread. A 940nm laser/LED provides complete covert surveillance. The Watec's spectral response in the 940nm range is the highest. The Watec cam weighs only 300 grams and won't strain the neck. An alternative is to use Image Intensifiers. The marines in Iraq use 4th generation which America doesn't allow be exported. Only second generation's are available in SA but these form a green mush image and needs a bright red LED which defeats the covert aspect. Their range are not even close to a Watec capturing an 940nm illuminated object.

Secure perimeter using GPRS/GPS/PIR:
Attach a GpsAndGprs module and PIR (passive infrared) module to a rod that can be placed anywhere around a perimeter. The guard places multiple units around a large perimeter. On detecting a person the modules GPRS the gps coordinates to the base and to the guard for further action. The rods with it's modules must be removed before the employees arrive the next morning. The guard himself is tracked via gps.

Secure perimeter using Wi-fi video modules/GPS/PIR, copper and video baluns
TrenchingEquipment or VibratoryPlow around a perimeter, insert twisted pair into 15mm LDPE and lay it underground. Plant drill-boxes that will house a 2.4ghz Wi-fi video receiver (sold by www.miro.co.za) that connects to the copper backbone at multiple points around the perimeter. The Miro 2.4ghz video modules converts the camera analogue signal to 2.4ghz transmits it to the drillbox which converts it back to analogue. The Eaglecctv video baluns takes this analogue video signal and transmits a distance of 1km overt the under ground twisted pair to the central www.zoneminder.com box. One Zoneminder box with a Spectra Linux Bttv chipset can detect motion on eight analogue cameras. The 2.4ghz analogue video transmitter clamped to a tripod or rod uses little power and can be moved around the perimeter by the guard or placed at covert locations as long as it has LOS to the 2.4ghz video receiver at the drillbox. The back of the 2.4ghz analogue video transmitter is protected by a PIR. On could even place a servo on the tripod to rotate the analogue camera 360 degrees looking in the direction of a PIR being triggered. For example clamp three PIR to a tripod with the camera on top and ofcourse the www.miro.co.za 2.4ghz video transmitter.

ThermalImagingCameras
The money spent by a block of say 500 houses on security and inflated telecom costs is a staggering amount that could be used to purchase a vehicle fitted with a thermal imaging camera in addition to the Watecs and Dslams. Thermal imaging cameras prices have come down considerably and can be used to drive past insurgents and scan them for hidden fire-arms. Coordinating the financing of cameras, vehicles can only efficiently be done if all 500 houses have a 24hour Intranet and Internet connection that is virtually for free. In other words you emulate http://mybroadband.co.za on a mini-scale with people that all have a common goal in mind: To stop crime.

Security measures in SA are largely reactive instead of preventative. There was a story recently in the paper about a person who had been robbed at his house with a security guard present. Because our gun laws are so draconian, guards are very reluctant to shoot first. Our security companies have also been deeply infiltrated by organised crime and many of the house robberies are due to the information given to the crime syndicates by security guards.

Presently to get anything organised one has to physically walk from house to house and get each person's number. Then you have to contact each person individually through the Vodacom/Telkom centralised network. Getting the funding in this manner for a patrol vehicle and Thermal imaging camera is a daunting task. E-mail as a communications medium has been compromised through spam and thus people are reluctant to give their e-mail address. Some residences have a 24hour guard at a cost of R36000/year. If that person could change his thinking and rather spend that money on telephone poles, Watecs and TelephoneNetworkRollout - protecting everybody a change for the better will result. The difficulty is in persuading people to allow that extra pole - convincing them that they are not as useless as they think they are.

Farm related Dslam applications:
Run twisted pair around the perimeter of high value crops like macadamias using TrenchingEquipment. Purchase 200m rolls of twisted pair from a cable distributor and pull multiple strands through a LDPE 20mm or 25mm pipe. Seal the ends with silicon and glue.

a Time domain reflectometer (www.eaglecctv.co.za model E-CLM) traces any fault in the cable. At any point on the twisted pair a covert camera can be installed connected to an E-TPT-BNC transmitter. Multiple Adsl modems can be installed around the perimeter. Using Wi-fi a tower needs to be built for fresnel zone clearance. It all depends on the topology of the environment and the costs wether Dslams or Wi-fi or both will be used and what is the application. For covert surveillance a twisted pair must be used.

On a farm aim multiple LaserBeams down the length of the road upto 1km. A person moving very fast accross the road watched by a Zoneminder box breaks the laser. If the ZoneMinder motion detection did not pick him up, the continually visual recorded video stream logged on a MySql database must be inspected.

A combination of Dslams,Fiber, Wi-fi and E-TPT-BNC are used to provide a realtime video stream of the bakkie driving from the farm residence to the tar road. All farmers in an area are connected via Wimax. An operator watches all activity on any specific route of multiple farms. The bakkie itself must have GPS, GPRS and a camera dome on the roof as discussed elsewhere for a permanent link to the base. As discussed elsewhere the only two escape routes must be cut-off: Track them in the bushes with bloodhounds and make certain everybody knows where on earth the farmers bakkie is. As a backup a radio transponder that can be tracked from a chopper must be installed in the bakkie. When a marine in Iraq leaves his base in the Humvee somebody has to know where he is going. And us marines in the South-African warzone must implement the same system. We can win this war but only if we network with each other.

Specific Farm related security
Plant bouganvillas in a perimeter around the farm house. See Plant propagation Place four motion detection cameras with Infrared Leds around the bouganvillas. Any perimeter can be breached given enough time, the bounganvillas or electric fencing stalls an intrusion attempt. In every single farm attack the assailants either escape via the farmers bakkie or via the bushes. Use a Bloodhound to track assailants in the bush.

Many plots and farms have a relativly short distance to the main tar road. Train a camera on the gates as the farmer leaves and enters. The slow driving on the farmroad is the most dangerous part. Using the a DsLam and MeshNetworking combination and ZoneMinder system a security operator keeps an eye in realtime on the farmers bakkie. See GpsAndGprs

Mounting motherboards outside
At any point an analogue camera or Adsl modem can be connected to stream either digitised data back to the Dslam

Attach a camera to the worker to either stream in realtime or record his movements and what he observed.

Wireless video transmitters
http://www.supercircuits.com/index.asp?PageAction=VIEWPROD&ProdID=4238

Links
*http://www.flexopower.com (011) 465 0022 *http://www.miro.co.za *ConfiguringAlarmSystem