The design philosophy behind the JI1000 is a simple, yet powerful microcontroller based mobile security system. At the heart of the JI1000 is the Atmel AT90S4414 8-bit RISC microcontroller. We used the 4414 for this design because a microcontroller is well-suited for a security system. The basic control functions for our system include monitoring inputs (such as sensors, push buttons, etc) and controlling output signals (such as sirens, lights, LEDs, etc). These functions are easily implementable in an embedded processor.
Our design involves a combination of hardware and software. The control functions were programmed in assembly language and downloaded into the FLASH memory on the microcontroller. The hardware consisted of circuitry to run the siren and to simulate the sensors which trigger the alarm. In addition, we designed hardware to provide the necessary power and voltage levels to all the components.
Our design has the following features:
4 Button Input System
Disarm/Arm, Remote Valet, Panic, Program
Remote Controlled Valet Mode
A press of a button will put your JI1000 system in valet mode to allow vehicle servicing or attendant parking. The system audibly confirms remote valet mode exit or entry with a distinct 4 siren chirp signal.
Full-Time Remote Panic with Automatic Door Locking and Unlocking
If you feel threatened, with just a single press, you can remotely activate the siren, flash lights and unlock your vehicle’s power door locks for quick entry into your car without fumbling with your keys. If you are driving the vehicle and press the panic button, the siren will sound, the lights will flash and the doors will automatically lock to shield you from the assailant.
Whenever you remotely arm or disarm, the siren “chirps” and the parking lights flash to confirm system status. Whenever you wish, you may silence the chirps via an RS232 interface.
For more detail: Clifford Systems JI1000 Car Alarm System