Oct 2011

alarms for seniors

home alarm systemPhotoelectric Sensors: These sensors project a beam of light across a hall or doorway to detect motion and are triggered when a person passing through interrupts the beam. Glass Break Detectors: Usually mounted near windows to detect the specific high frequency sound of glass being shattered. They are usually installed on a wall opposite or adjacent to the protected glass and are effective within about 15′ to 25′. Smoke and Heat Detectors: Detect smoke and heat. Chapter II:Our Home Alarm SystemOur Home Alarm System:Our project’s main concern was to build a Home Alarm System using a PIC microcontroller. We started off our project by coding the Keypad, then LCD and the final touch was the sensor. We also added two types of buzzers: one to sound the alarm and the other as a key tone buzzer. The final result turned out to be the following:Figure3. Our Home Alarm SystemMaterials Used: Cost:PIC16F877A 7$4X4 Keypad 2$JHD 162A LCD 6$6V Alarm Buzzer 0. 5$Key tone Buzzer 0. 5$4 MEGA Crystal Oscillator 5$3 Flashing LEDs 0.

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Oct 2011

security system

carbon monoxide detector beepingFactors affecting the Growth of Private SecurityThe factors and level of training for security personnel has evolved significantly from those basically walking the perimeter and reporting disturbances. Today private property requires protection in many industries such as banking, medical, chemical, technological, manufacturing, even retailers and small businesses need security protection. The required security today includes…… Even perimeter security is in question. The GAO surmised that perimeter security at airports may be insufficient to provide effective security. The TSA has begun efforts to evaluate the effectiveness of security related technologies. These include items such as biometric identification systems, but the TSA still has failed to develop a plan that will guide airports when technology enhancements are developed. The TSA has pursued the procurement of checkpoint technologies in order to address critical existing vulnerabilities, yet the GAO noted that these technologies are not being deployed on a wide scale basis Berrick 2008. Challenges such as these must be addressed if the hybrid federal private transportation security program is going to truly be effective in keeping America secure. Conclusion:When the clear morning of September 11th, 2001 was shattered with the first plane strike into the World Trade Center, transportation in the United States would never be the same. The…… One big cause for the demand on modern hyper security is that a lot of cool stuffs are becoming easily available. Developments in computers have made programming robots easy for non experts.

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