Ultrasonic Receiver

The photo depicts the schematics for an Ultrasonic Receiver which will detect the signal from the Ultrasonic Transmitter once it bounces off from an object. The combination of these two sensors will allow the aerial robot to detect objects in its path and maneuver around the objects. These sensors will be attached in front of the plane. These sensors will also help the robot navigate through the halls of any building.. This tutorial will show how to construct and test one pair of ultrasonic proximity receiver and transmitter.


Motivation and Audience

Readers of this tutorial assumes the reader has the following background and interests:

The rest of the tutorial is presented as follows:

Parts List and Sources

US-based vendors to obtain material to complete this tutorial include:

To complete this tutorial, you'll need the following items:

TABLE 1: Parts needed to build Ultrasonic Proximity Sensor
PART DESCRIPTIONVENDORPART #PRICE (2002)QTY
741 OP AMP IC
Radio Shack276-007 2
0.01 UF CAPACITOR
Radio Shack272-131 2
330 OHM RESISTOR
Jameco30867 2
10 KILO OHM RESISTOR
Jameco29911 4
Ultrasonic receiver (40KHz)MPJAN/AN/A1
100 KILO OHM RESISTOR
Jameco29997 1
1 K ohm resistor
Jameco29663 1
Prototyping Circuit BoardRadio Shack276-148$1.691

Construction

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.)

Data Collected

Click here to see the data collected.

Final Words

This tutorial's objective was to help others built a ultrasonic proximity receiver which combined with a ultrasonic transmitter will be used as the eyes of a robot. Complete construction details and photos are included in this tutorial for the sensor. Once the concepts are conveyed the reader should be able to build their own sensor.

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