INVISIBLE BROKEN WIRE DETECTOR PROJECT REPORT 1 ABSTRACT A circuit to detect the exact location of breakage Download. Fig: Invisible Broken Wire Detector. The circuit presented here can easily and quickly detect a broken/faulty wire and its breakage point in 1-core, 2-core, and. Schematic Block Diagram of Invisible Broken Wire Detector 12 a circuit which can easily detect the exact location of the broken wire and thus.
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In this article we are going to make a Invisible Broken Wire Detector which is used to check broken or disconnected wires inside the walls. Broken Wire Detector Circuit Using IC CD - Download as Word Doc .doc /. docx), PDF File .pdf), Text File .txt) or read online. Broken Wire Detector Circuit. Abstract:Broken wire fault logic compares the differential inupt voltage (for example, A+ to A) against expected values. If the amplitude is too.
The second link has better pictures but muddies the purpose of the transformer. Note how the high impedance side of the transformer limits power to the oscillator, allowing the pulsing of the audio signal to amplitude-modulate the 1MHz carrier provided by the crystal oscillator. My concern was not losing fidelity, since I just want to broadcast a continuous tone, say 1 kHz. Anyway, it worked fine to omit the transformer.
I also wanted to be able to use a wide range of power supplies, so I added a voltage regulator. And, I wanted to put out TWO tones onto the opposite sides of the broken wire. A break in the wire will be detected as a pitch change when you scan over the break, from one tone to the other.
This required building two identical AM transmitters. I routed the two stereo channels to the two transmitters. The Mac application may have been Audio Toolbox.
The output was something like a Hz sine wave on the left and 1,Hz on the right. I set my iPod to replay the tone song repeatedly and tuned in my AM receiver. Mine has digital tuning. Conclusion: It worked! What more can I say?
At the workbench, the transmitter could be detected at least about 10 feet away. Detection distance increased with antenna length. In the field with the buried perimeter wire, the signal was easily detected a foot or two above the ground, by sweeping the receiver back and forth perpendicularly to the wire. They are: inconsistent, any defect, weakness of the cable, insulation failure and breaking of the conductor.
To overcome this problem, here is a project namely underground cable fault distance locator, used to find the location of the fault for underground cable. Underground Cable Fault Locator Underground Cable Fault Distance Locator Before attempting to find underground cable faults on direct hidden primary cable, it is essential to know where the cable is situated and what direction it takes.
If the fault occurs on the secondary cable, then knowing the exact route is even more critical. Since it is extremely difficult to find a cable fault without knowing where the cable is, it makes sense to master cable locating and tracking before start the fault locating process.
The success of fault tracking and locating of an underground cable is mainly depends on the skill, knowledge and experience of that person. Although tracing of the cable can be an intricate job, it will very likely become even more complex as more underground plant is installed. It is just as important to understand how the equipment works.
Types of Faults A fault in a cable can be classified into different types such as Open Circuit Fault This type of fault is better than short circuit fault, because when the open circuit fault occurs, then the flow of current through an underground cable becomes zero.
This fault can be occurred by disruption in conducting path. Such faults occur when one or more phase conductors break. Short Circuit Fault Short circuit fault can be divided into two types, namely symmetrical and unsymmetrical faults In symmetrical fault, three phases are short circuited in this type of fault. This type of fault is also called as three phase fault due to this reason. In unsymmetrical fault, the magnitude of the current is not equal and displaced by degrees.
Different Methods of Fault Location Free location methods can be classified into different types that are discussed below.
Underground Cable Fault Localization Online Method Online method uses and process the sampled current and voltages to determine the fault points. This method for underground cable are less than above lines. Offline Method This method uses a special instrument to test out service of cable in the field. Offline method is classified into two methods such as tracer method and terminal method.