Laser Intruder Alarm System

Locks are an excellent way to make breaking in more difficult for criminal and more beneficial for you. Alarm systems have many different designs. They can have control panels, sirens, sensors and viewing stations. When the alarm is triggers, the event is reported to a central monitoring stations which send help which can be the New York City Police Department, Fire Department, and Emergency Medical Services. Home security cameras are not brand-new technology and models can easily be found for the safety of your home. Home security cameras can range from image quality, range, networking features and long-term build

About 250 to 300 AMBER Alerts are issued each year. To keep up with changing times AMBER Alerts are moving into the Web network. To be effective, more people need to be reached, and to do this the Internet is needed. The old system when it was activated could take up to an hour for all sources to be reached. In abduction, a rapid response can be crucial. With the new system, partly financed by Hewlett-Packard and other technical companies, one key password can send messages immediately. About thirteen states use this as part of their Alert system. Law enforcement enters

The board hardware inputs for A, B, and C are switches SW[2], SW[1], and SW[0], respectively. Add these input pins to your schematic. You will also need the complements of these signals as well and will need to add three not gates. Label the pins and wires as shown below, using Properties to change the names. If you forget how to do this step, refer to the wiring tutorial instructions, included as part 0 of this lab.

5. Write the program to implement your algorithm. Test your program using your test cases. Did your program produce the values predicted in your test cases? Explain.

According to the Merriam-Webster online dictionary(2015), alarm is defined as “a device that makes a sound to create a warning about something” (Merriam-Webster Dictionary, 2015). The Macmillan dictionary defines alarm as “the fear or worry that something unpleasant or dangerous might happen” (Macmillan Publishers, 2015). Stedman’s concise medical dictionary for the health professions (2001) further defines alarm as “a device to help people to be aware of an unwanted occurrence or event by signal” (Stedman & Dirckx, 2001).

Systems – this type of security includes working with all sorts of systems, like alarm systems – to prevent the fire; alarm systems – to be alarmed against any possible threat; CCTV – to monitor the area or premises.

The RFID system mainly includes three parts: reader, antenna, and RFID tag, as shown. Because of the uniqueness of the RFID tag, the reader can locate and

By manipulating the key characteristics of the Schmitt trigger, it produces different frequencies fed to the speaker to operate. One key component of the Schmitt trigger is to determine the high and low thresholds at 3V. This is done with the help of the data sheet values as presented in the appendix below. The next section 3.2 contains a detailed explanation of the design process.

You asked the following question: “The wording of 14.4.3 says that tanks shall be kept filled and the water level shall never be more than 4 in. below the designated fire service level. This would seem to mean that it was the owner’s responsibility to monitor the tank level and keep it filled. Automatic filling is permitted per 14.4.7 where this does not sound like automatic filling is required. Would a float switch that is supervised by the fire alarm system and a manual fill valve be acceptable?” In response to your question we have reviewed NFPA 22, 2008 edition that you indicated as the applicable standard as well as NFPA 25, 2008 edition. Our informal interpretation is that manual means to fill the tank is permitted and is also the

1). Design the circuit for the given specifications. 2). Write the program code. 3).

A phase-locked loop (PLL) generates a signal that has a fixed relation to the phase of a reference signal and is given in Fig. 4. A phase locked loop responds to both the frequency and the phase of the input signals, automatically raising or lowering the frequency of the controlled oscillator until it is matched to the reference in both frequency and phase. Here three phase PLL was implemented with three basic functional blocks: the phase detector, a PI controller and a voltage controlled oscillator. The phase detector is a circuit capable of delivering an output signal that is proportional to the phase difference between its two input signals. The PI controller is a low pass filter and used to suppress high frequency component and provide dc controlled signal to voltage controlled oscillator which acts as an integrator. The output of the PI controller is the inverter output frequency that is integrated to obtain inverter phase angle θ. When the difference between grid phase angle and inverter phase angle is equal, Vq =

There is a difference between early warning systems and booby traps. Early warning systems are essentially a reboot of noise makers strung along a line that an intruder would

We differentiate several types of issues using the public address system all over the building to announce what the issue really is over the microphone and speakers. This is used to give real-time information and instructions. The alarm is not differentiated, any time there is an emergency like a tornado or earthquake. The alarm goes off, as a warning signal for people to take safety precautions.

Customer Needs- Security systems are required by people to0 keep their homes safe, it gives them a sense of safety for their personal belongings, when they are away from their home.

RECEIVER SECTION:- This section is worked as a Flip-flop (Bistable). IC-3 is decade counter, its Pin No.14 is input and Pin No. 2 output. The output of frequency detector stage is used, via a flip-flop, to switch ‘ON’ or switch ‘OFF’ a LED alternately. The receiver uses infrared modules IR-signal from the transmitter is sensed by the sensor through and its output PIN 1 goes low and switched LED. IC-3 is worked on clock pulse which receives to infrared modules at Pin No. 14. Its output at Pin No 2 throughes high.