Project on How to Build Circuit Schematic Ultrasonic Proximity Detector Based on LM393 IC

Eltronicschool. - There are many aplication of using ultrasonic proximity detector as like when you want to build  an automatic flush toilet for your home or design a machine to taunt your cat every time you walks by.

In here we will show you one project on how to build by your self circuit schematic ultrasonic proximity detector based on LM393 IC look like shown in Figure 1 and Figure 2 below.

There two main part of this project called with transmitter and reciever. You need ultrasonic sensor as transmitter and also as reciever. The main IC used in this project is using LM393 IC. Beside we will give you all of the circuit schematic, we also will give you more description on how to build this project and continued to see more from original site. 

Circuit Schematic

Figure 1. The transmitter circuit of ultrasonic proximity detector (Source: www.jameco.com)

Figure 2. The reciever circuit of ultrasonic proximity detector (Source: www.jameco.com)

Component Part

1. R1 3K 5% 1/4W Resistor
2. R2 150K 5% 1/4W Resistor
3. R3,R10,R14 330K 5% 1/4W Resistor
4. R4 1.8K 5% 1/4W Resistor
5. R5 470 5% 1/4W Resistor
6. R6 10K 5% 1/4W Resistor
7. R7 2.2K 5% 1/4W Resistor
8. R8,R15,R17 1K 5% 1/4W Resistor
9. R9 220 5% 1/4W Resistor
10. R11,R19,R20,R22 100K 5% 1/4W Resistor
11. R12 100K Potentiometer
12. R13 10M 5% 1/4W Resistor
13. R16,R21 1M 5% 1/4W Resistor
14. R18 150 5% 1/4W Resistor
15. C1,C3,C6,C15,C16 100nF Capacitor
16. C2,C5,C8,C12 1µF Capacitor
17. C4 33pF Capacitor
18. C7 47nF Capacitor
19. C9,C10 22pF Capacitor
20. C11 22µF Tantalum Capacitor
21. C13 100µF Capacitor
22. C14 470µF Capacitor
23. C17 10nF Capacitor
24. D1,D2 1N914 Diode
25. D3 Red LED
26. Q1,Q2,Q3 2N3904 Transistor
27. U1 Comparator Dual ±18 Volt 36 Volt
28. U2 HEX Inverting Buffer/Converter
29. U3 Standard Timer Single
30. U4 Standard Regulator 9 Volt 2.2 Amp
31. K1 12V SPDT Relay
32. TB1 Terminal Block
33. J1 2.5mm x 5.5mm Jack
34. T1 12V 200mA Wall Transformer

Description

Circuit schematic like in Figure 1 and Figure 2 above are the transmitter and reciever of ultrasonic proximity detector based on LM393 IC. The main component in these circuit are ultrasonic sensors and detector and also IC LM393 IC.

Accordingly Jameco site describe that This circuit schematic has a maximum detection range of approximately 6 feet. 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 is no reflection, the relay contacts will open after 20 seconds. Photo 1 shows the assembled circuit on an experimenter's breadboard. And now you can follow step-by-step on how to build this project using link HERE.