Ultrasonic Circuits
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Ultrasonic recipients will receive an ultrasonic signal emitted by an ultrasonic transmitter in accordance with the characteristic frequency. Received signal is going through the process of filtering using the frequency band pass filter circuit, with a....
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This is the design circuit diagram of an ultrasonic mosquito repeller. The circuit is work with based on the theory that insects like mosquito can be repelled by using sound frequencies in the ultrasonic (above 20KHz) range. This is the figure of the....
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Diploma Final Year Project represents the culmination of our learning process, where it is a must to put into use from previously learned engineering and personal skills. The assessment has a major influence on decisions regarding readiness to graduate. This....
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I have designed the attached circuit for detecting how long an ultrasonic pulse need to to travel a distance. the input signal is going to be from a 40 k ultrasonic receiver. First stage is 40k Band pass - 1k pass band - differential MFB filter with a gain....
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The technology of range finding employs extensively in civil, industrial fields such as measuring, medical flaw detection, car anticollision of position of the material, etc. , because the ultrasonic speed wants to the velocity of light it is much smaller,....
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The mobile robot should run under the unknown and uncertain environment, must possess autopilot and avoid hindering the function. The ultrasonic static is used as the range finding sensor of the mobile robot extensively with its characteristic simple, fast....
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In the daily life and production, a lot of occasions such as car roll back, robot avoid hindering, industrial well logging, liquid level measurement of the reservoir etc. to need to carry on the range finding of non-contact automatically. Supersonic wave....
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In industrial production, flow measurement is to employ the extensive measurement physical quantity. Under special circumstances, when for instance vertical externally positioned installation probes of difficult pipeline such as the oil well, etc. , need to....
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Since the ultrasonic receiver used in this circuit is one designed to vibrate optimally at about 40 kHz, the transmitter paired with this receiver must also transmit 40 kHz waves. When these waves hit the receiver, the receiver vibrates and produces electric....
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The circuit uses a 555 timer IC configured as an astable multivibrator, i. e. , it generates a continuous signal of a set frequency as long as its reset pin (pin 4) is held high. Since the ultrasonic transducer used in this circuit is one designed to vibrate....
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A simple ultrasonic range finder using 8051 microcontroller is presented in this article. This ultrasonic rangefinder can measure distances up to 2. 5 meters at an accuracy of 1 centi meter. AT89s51 microcontroller and the ultrasonic transducer module....
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The transmitter part of the circuit is build around IC1(NE 555). The IC1 is wired as an astable multi vibrator operating at 40KHz. The output of IC1 is amplifier the complementary pair of transistors ( Q1 & Q2) and transmitted by the ultrasonic transmitter....
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Enhancements include: analog front end, pin-to-pin compatibility (for existing designs), analog stabilized comparator and simplified external circuit design, improved time and temperature measurement and reduced current. TDC-GP21 is perfectly suited to....
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A cat deterrent with an Arduino, something akin to this. I have figured out detection, and now realize that I need to use an ultrasonic transducer to produce the `blast` that I need...
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A new type of remote control based on ultra sonic sound. The transmitter part of the circuit is build around IC1(NE 555). The IC1 is wired as an astable multi vibrator operating at 40KHz. The output of IC1 is amplifier the complementary pair of transistors (....
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It is 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. This is a one design circuit for the....
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The Ping Ultrasonic Distance Sensor by Parallax has three pins. These pins are +5V, I/O, and Ground. In order to activate the sensor, a 5 microsecond 5V signal must be sent to the I/O pin. The sensor then waits 750 microseconds before sending an ultrasonic....
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If you want to make your robot sense the objects in it`s surroundings i suggest you to go for an ULTRASONIC sensor. Though the IR based sensors are cheep, their working range may vary due change in ambient light and won`t give accurate range values. In case....
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This is a design circuit for an electrostatic transducer for ultrasonic measurement circuit. This circuit uses the LM1812 ultrasonic transceiver. Transducer x1 and LM1812 will transmit a burst of oscillations. Then the return echo is listened by using X1.....
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Barrier measurement of distance method applied is with measuring strength of bound signal. Reflection wave is catch with an acceptor transducer. Acceptor transducer releases sine signal which the amplitude depended from barrier distance with transducer.....
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A higher end version of the same thing, with a few extra user selectable settings to allow audible as well as ultrasonic output so it can be more effective against animals:..
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Borrowing techniques echo sounder used to measure ocean depth, distance measuring device can be made with an ultra sonic. Gauge this distance using the same circuit with Digital Clock in the last article, coupled with a series of transmitter and receiver....
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This is a small circuit insect repellent, mosquitoes and birds, or other methods to produce high frequency audio signals. Interfere with the hearing of insects. Make it insufferable, wings to escape in the end. Operation of this circuit is used IC1 number....
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40kHZ one ultrasonic transmitter circuit, the F1 ~ F3 three oscillators in the F3 is 40kHZ square wave output, frequency mainly by C1, R1 and RP decided to adjust the adjustable resistance with a frequency of RP. F3 transducer excitation output T40-16 at one....
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