Posts Tagged ‘alert’

Modem used in an alarm system

Sunday, August 29th, 2010

ORP Systems

This alarm system senses motion and then alerts you by phone. And this fellow, [Oscar] had an old external modem sitting around and, with some wise hardware choices, he came up with a simple circuit to use it. First up is the PIC 16F628A chosen because it doesn’t require an external crystal. This connects with the modem via a DS275 RS232 transceiver because it requires no external parts for connection. The final portion of the puzzle is a PIR sensor that triggers a pin interrupt in the sleeping PIC, which then dials your number to alert you. It doesn’t look like anything happens other than your phone ringing, but that’s enough for a simple system. We’re glad to see how easy it was to use that modem… time to go hunting for one in dreaded junk trunk. Don’t miss the clip after the break.

What you can see in the video is: The modem is turned on and the pic configures it to disable command echo, change to return numeric responses and turn off the volume of the modem speaker. The user has 15 seconds to leave the room, then the pic waits a motion detection. When it is detected the pic dials a fixed phone number and the user will receive the alert.

The pic is programmed in CCS and the source code is included. Well, I bet it’ll be a great project to make. ^_^

Source ORP Systems

The hijack-proof truck

Sunday, April 27th, 2008



Two entrepreneurs have hit anti-terrorism pay dirt with a tiny black box that shuts down vehicles at the first sign of trouble.

You can’t go far wrong in a truck equipped with an Astrata box. The device, half the size of a cigarette pack, can be wired into anything that moves – truck, car, shipping container – to head off nearly every conceivable type of disaster.

It can be programmed to stop a drunk or unauthorized driver from starting a vehicle, for example, or detect and shut down a truck that has been hijacked, locking the thief inside and alerting its owners.

truck chart

The Astrata-GLP (global location platform) is part Big Brother, part James Bond – except that it already exists, and corporations and governments are paying close attention.

Powered by GPS tracking, wireless communication, and a Linux-based operating system, Astrata is the brainchild of Martin Euler and Tony Harrison, a British accountant and an Irish technology executive, respectively, who bet that the need for tracking and security devices would grow exponentially after 9/11.

Their client list now includes Shell Oil (Charts), Nestlé, and the government of Singapore.

Course correction

Astrata can detect a gasoline tanker that veers one block off its route, thwarting attempts to use it as a bomb. Security giant Group 4 Securicor puts it in armored cars in Indonesia.

Driver ID system

Astrata can be programmed to start only after the driver passes a breathalyzer test and presses a thumb for identification. A video camera can record the driver’s activities. Singapore’s Civil Defense Force is using the camera and thumb ID system in its hazmat trucks.

Speed tracker

Once Astrata detects a stolen (or speeding) vehicle, it can slow it to 5 mph or stop it completely. One commercial client uses the device to monitor how fast its truck drivers are going and how aggressively they drive. The box also tracks when the trucks are moving, so drivers can’t pad overtime claims or moonlight with company property.

Instant holding cell

Doors and windows can be locked remotely, trapping would-be terrorists, thieves, or reckless drivers inside. The device can also be programmed to flash hazard lights, blare the horn, notify headquarters, and summon police.

Source: Business 2.0