PIC12F675 Ultrasonic Proximity Detector Circuit
The ultrasonic proximity detector circuit PIC12F675 detects the distance installed on the microcontroller as adjustable from about 30 cm to 3 m Ultrasonic Distance measurement is based on measuring the rotating time of the radiating ultrasonic wave reflected from... Electronics Projects, PIC12F675 Ultrasonic Proximity Detector Circuit "microchip projects, microcontroller projects, " Date 2020/04/02
The ultrasonic proximity detector circuit PIC12F675 detects the distance installed on the microcontroller as adjustable from about 30 cm to 3 m
Ultrasonic Distance measurement is based on measuring the rotating time of the radiating ultrasonic wave reflected from any object. Thanks to the use of the Microchip PIC12F675 microcontroller and integrated hardware functions, the design is as simple and as small as possible, and the circuit is fitted in a PCB board.
The reflected wave connects the signal amplified with NE5532 to the input of the internal comparator (pin 6) of the PIC12F675 microcontroller.
Inside the PIC12F675 Microcontroller, an internal reference is set to the comparator and the decision level is adjusted. Changing its value (VRCON recording) makes it very easy to adjust the sensitivity of the circuit to the input signal. Thanks to the use of a high-quality operational amplifier in the IO1 position, the sensitivity is now set to the lowest possible value.
R6 is connected to the input of the internal A / D converter, which constantly monitors its current position. It is used as a decision level to measure the reflection time of the ultrasonic wave and is limited by the software in the range of about 30 cm to 3 m.
If the reflected wave is set or detected at a smaller range / distance, the microcontroller output (pin 7) and then the output transistor T1 will open, for example, control the relay, buzzer or any other system. The output is turned on by LED D1 and the output is permanently opened for the entire obstacle detection time within the set distance.
The ultrasonic sensor circuit has DIP and SMD type 2 PCB drawing. There are double-layer and single-source source asm and hex software files which are SMD.
Ultrasonic Detector circuit diagram
Source: pandatron.cz
FILE DOWNLOAD LINK LIST (in TXT format): LINKS-26627a.zip
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