The actual anti-theft system is equipped with two frequency siren and connected to a vehicles immobilizer system. But in the laboratory simulation model; the change of operating modes, triggering of the siren and cutting off of the fuel supply to the engine is indicated by lighting of LEDs as well as from the computer through the serial communicat
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ion. Instead of the Security key-pad, ON and OFF push buttons are incorporated in the simulation. In micro-controllers, logic 1 and logic 0 correspond to +5V and 0V respectively. But in the GPS module as well as in the computer, the logic 0 and logic 1 correspond to -15V and +15V respectively. Therefore, MAX232 IC has been incorporated to match the logic levels. The GPS receiver uses the NMEA standard with a baud rate of 4800 bps, therefore the serial communication baud rate of the PIC and the PC should also be 4800 bps. The system should be programmed to read NMEA standard messages. This GPS receiver has a high sensitivity and a reasonable positioning accuracy which is matching to the anti-theft system. The maximum operating temperature of the receiver is +80 °C which is way higher than the maximum temperature that could occur inside the vehicle and since a normal vehicle does not exceed a maximum velocity of 83 m/s and a maximum acceleration 4g, it is ensured that the selected GPS receiver is ideal for the anti-theft system. It was decided to fix the GPS receiver inside the casing of the cabin light. This location is selected because, it is well secured and it has a continuous power supply. The receiver`s access to the sky will not heavily weaken because of the roof. An electronic vehicle siren with a high and low tone will be used as the warning siren. The selected siren provides the both high and low frequency sirens....
This project fits more for custom made battery casing that can have more space to hide things inside. This switch with few alterations can be used for any other project as well but is designed based on e-bike needs! This project use a clever functionality of....
The circuit described here uses ultrasonic oscillations and operates based on the propagation velocity of these oscillations in the air. Thus, we can easily determine the distance of two points if the time within which the wave travels this distance is....
Sometimes the precious metals are hidden too deep and are not detected except with complicated devices. In many cases, however, small pieces of precious metal buried near the surface can be detected by relatively simple means. Everyone is very attractive to....
Many times for various reasons we forget or can not water the plants that we have in our homes. And many humidity sensors units just notify us with a beeping sound or with a flashing light, that the pot needs watering. But what if we are away from home? This....
The principle behind a metal detector is really very simple. Proof of this is the circuit that follows, in which it proves that the construction of a metal detector can be done in the minute, with few components that we find very easily everywhere. With the....
The sub-harmonic bass generator is a sound producing unit for guitars. The sound it produces looks very much like that of the bass guitar. The octave generator is sometimes quite unusual since it does not produce any of the usual ways of coloring the sound,....
In the past the sounding (sea bottom measurement) was done with the "bullet", that is, with a heavy lead object that the seamen plucked into the sea hung from a calibrated rope. As soon as the "bullet" reached the bottom, the depth appeared directly from the....
This Amplifier was designed to have the following specifications: Distortion less than 0.1% at full power of 100W even at 20KHz. Power has to be attributed to an extended bandwidth. The output transistors must be protected against short circuits. The power....
A series of LEDs serve to alert the gardener when plants need water. Using two conventional digital integrated LEDs and a series of LEDs, we make a very useful device for gardening. The device detects the amount of water in the pot and alerts the grower.....
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