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This is a very interesting project with many practical applications in security and alarm systems for homes, shops and cars. It consists of a set of ultrasonic receiver and transmitter which operate at the same frequency. When something moves in the area covered by the circuit the circuitG ™s fine balance is disturbed and the alarm is triggered
Ultrasonic Radar AlarmCircuit Project
As it has already been stated the circuit consists of an ultrasonic transmitter and a receiver both of which work at the same frequency. They use ultrasonic piezoelectric transducers as output and input devices respectively and their frequency of operation is determined by the particular devices in use. The transmitter is built around two NAND gat
500Hz Modulated Ultrasonic Transmitter
Ultrasonic Level Sensor
Ultrasonic Module Circuit
Ultrasonic transmitter and receiver circuit with CA3140
Arduino Ultrasonic Sensor with LEDs and buzzer
Hi guys this is my first tutorial, I`ve just started a few months ago learning electronics (previously I`ve just knew how to program in C and Python)..
Ultrasonic Proximity Detector
The circuit in Figure 1a and Figure 1b are the schematics of an ultrasonic proximity detector. It has a maximum detection range of approximately 6 ft. When someone passes in front of the ultrasonic transceiver board, the contacts of relay K1 will close. The relay will remain energized while the device continues to detect a reflection. When there...
A Sensitive DIY Ultrasonic Range Sensor
Some ultrasonic range finders for my project. But most of the commercial sensors like Parallax`s PING sensor and other similar products are quite expensive, especially if multiple units are needed. So I thought why not building it myself The theory behind ultrasonic ranging is quite simple. Typically a short ultrasonic burst is transmitted from...
circuit for ultrasonic parking sensor
You could have an USBI2C with every sensor, which would mean 4-sensors for £120. The SRF02 runs on the I2C bus, which i`ve been told I shouldn`t extend more than ~2metres. The obvious plan would then be to have one USBI2C for the back bumper, and one for the front, with a total price of £80. I`m currently experimentally considering if a `spider`...
Ultrasonic sensors apply to parking sensor system
By the ultrasonic sensor, control and display (or buzzer) and local composition, it can tell the driver his around obstacles by voice or a more intuitive display case. Relieve the driver stop, reverse and start to visit around the vehicle caused by problems, and to assist the driver to clean the line of sight angle and sight ambiguous death of the
This section gives step-by-step instructions along with photos to the construction of Ultrasonic Proximity Receiver. Because this is a very simple circuit, only a schematic for the sensor is shown here: (For the PDF format click here. ) This tutorial`s objective was to help others built a ultrasonic proximity receiver which combined with a ultrason
This section gives step-by-step instructions along with photos to the construction of Ultrasonic Proximity Transmitter. Because this is a very simple circuit, only a schematic for the sensor is shown here: (For the PDF format click here. ) This tutorial`s objective was to help others built a ultrasonic proximity transmitter which combined with a ul
EAGLE Ultrasonic Range Meter
The oscillation circuit of the transmitter was added. An oscillation circuit by 555 IC is used for a modified circuit. This is to adjust an oscillation frequency easily. Thereby, it is necessary to change the software.
Circuit explanation for Ultrasonic Range Meter
The ultrasonic signal which was received with the reception sensor is amplified by 1000 times(60dB) of voltage with the operational amplifier with two stages. It is 100 times at the first stage (40dB) and 10 times (20dB) at the next stage. Generally, the positive and the negative power supply are used for the operational amplifier. The circuit thi
Circuit explanation for the ultrasonic alarm
The alarm detector circuit is different from Ultrasonic Alarm (1). In Ultrasonic Alarm (1), an alarm output is presented when there is a reflected wave from the object in the setup time. At the circuit this time, an alarm is output when no reflected wave from the object is detected in the setup time oppositely. The existence of the reflected wave
Circuit drawing for the ultrasonic detection unit
Circuit explanation for the ultrasonic detection unit
Circuit explanation of Ultrasonic Range Meter unit
Detecting an ultrasonic beacon
An ultrasonic beacon and a ultrasonic receiver is very similar to a beam barrier circuit, the only difference is we don`t sound an alarm when an object breaks the ultrasonic path, but instead we try to locate the ultrasonic beacon by moving the receiver. This can be useful in robotics, when we use ultrasounds to detect a target (which in fact is t
ultrasonic switch circuit
The circuit described generates (transmits) ultrasonic sound of frequency between 40 and 50 kHz. As with any other remote control system this cirucit comprises of a mini transmitter and a receiver circuit. Transmitter generates ultrasonic sound and the receiver senses ultrasonic sound from the transmitter and switches on a relay. The ultrasonic tr
Medical ultrasonic atomizer 1
The medical ultrasonic atomizer circuit is composed of power supply circuit, ultrasonic oscillator and atomizer circuit, it is shown in the figure 9-110. The power supply circuit is made of timer Q, fuse FU, current transformer T, bridge rectifiers UR, current limiting resistor R2, power supply indication LED VL and filter capacitor C4. The ultras
Medical ultrasonic atomizer 2
The medical ultrasonic atomizer circuit is composed of power supply circuit, atomization amount liquid level detection control circuit, ultrasonic oscillator and fan motor M, it is shown in the figure 9-111. The power supply circuit is made of timer Q, fuses FU1, FU2, power transformer T, bridge rectifiers UR, resistors R1, R2, LED VL and filter c
Medical ultrasonic atomizer 3
The medical ultrasonic atomizer circuit is composed of power supply circuit, on the low side of liquid level protection control circuit, ultrasonic oscillator and fan drive circuit, it is shown in the figure 9-112. The power supply circuit is made of power supply switch S, resistor R1, power supply indication LED VL, fuse FU, power transformer T,
Ultrasonic atomizer 1
The ultrasonic atomizer circuit is composed of the power supply circuit, oscillator circuit and the water level control circuit, and the cirucuit is shown in Figure 3-189. Power supply circuit is composed of the power transformer T, rectifier diodes VDl-VD4, filter capacitors Cl, C2, zener diode VSl and resistor Rl. Water level detection control...
Ultrasonic drilling machine circuit diagram 2
The ultrasonic drilling machine circuit is composed of power supply circuit, ultrasonic oscillator circuit, preamplifier, promoting amplifier circuit and power amplifier output circuit, and the circuit is shown as the chart. Ultrasonic oscillator circuit consists of resistors R1 ~ R4, transistor V1, capacitors C1 ~ C4 and inductor L....
This circuit shows both sections of an LM833 that is connected as a filter to reject undesired ultrasonic signals. The filter characteristic is 4th-order Bessel with the -3-dB frequency at about 40 kHz. Resistors and capacitors should be 1%-tolerance components. This circuit can be cascaded with that of Fig. 7-43 (with the low-pass preceding the...
ULTRASONIC SOUND RECEIVER
You won`t be disappointed with the performance of this sensitive ultrasonic receiver. It can let you listen to bugs, bats, engines, and virtually any other source of ultrasonic sounds. This circuit uses a piezo tweeter as an ultrasonic microphone, amplifier stages Q1, Q2, and an LO using a 567IC. Q3 is a mixer that heterodynes the ultrasonic...
ultrasonic insect repellent circuit with CD4017
Ultrasonic Liquid Level Indicator Circuit Composed Of NE555
The picture shows the ultrasonic liquid level indicator circuit. This circuit is made up of ultrasonic transmitter circuit and receiver circuit.The ultrasonic transmitter circuit is made up of 555, R1, W1, C1 and ultrasonic transmitter head UCM40T. The ultrasonic receiver circuit is made up of the corresponding receiving head UCM40R, cascade...
Ultrasonic electronic rodent repeller circuit
LJC2200 infrared ultrasonic and radio remote control receiver circuit diagram
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Ultrasonic distance finder circuit
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 measured. There are three main categories of distance measurement methods in use: a) By...
Simple Metal detector circuit with CD4030
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 find something potentially valuable, hidden a few centimeters below the soil. So many...
Fully automatic watering circuit for flower pots
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 circuit comes as a solution to this problem. Depending on humidity of the pot at...
Simple deep searching metal detector circuit
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 circuit of this metal detector, it is possible to detect a metal coin in depth of 90 to...
Sub-Harmonic Bass Converter for Electric Guitars
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, such as filtering or distortion. Instead, a frequency division system produces outputs...
Echo Depth Sounding Sonar for Boats
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 calibration of the rope. This arrangement still exists in some yachts. The big...
100W HiFi Audio Amplifier Circuit
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 supply must be symmetrical so that no electrolytic capacitors are needed at the outlet....
Plant-Pot Water Level Indicator Circuit
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. The circuit of the device is shown in Figure 2. The water detection is made from the bottom...
Analogue Sound Preasure dB-Meter Circuit
The best human ear can capture sounds from 20Hz to 20KHz. These limits are known to be the broadest that can exist. Normally the normal limits range from 100Hz to about 13KHz and depend on the age and health of the individual. We for our measurements and to have a good accuracy we will get the limits of 20Hz to 20KHz. A sound to be heard does...
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