boon1987
Newbie level 6
![Newbie level 6](/styles/images/ranks/blevel3.gif)
hello everyone,
I am currently facing problem with building the the circuit for ultrasonic sensor. I am currently build a project for the following robot car follow leading robot car. To keep the safe distance between of following robot car and leading robot car, i want to use the ultrasonic sensor to sense this distance.
So i want to build the ultrasonic sensor to sense the leading robot car. The sensing range of ultrasonic sensor should be from 5 cm up to 20 or 30 cm cm. My problem is regarding the blind zone of the ultrasonic sensor. After reading many article related to ultrasonic sensor, i found most of their sensing range is more than 30 cm. Below the 30 cm is the blind zone.
So i am facing problem with build a circuit of ultrasonic sensor with sensing range between 5 cm to 20 cm(or 30 cm). I don't know how to build the circuit. What is the factor that affect the sensing range of the ultrasonic sensor. Can anyone give me some assistance for the schematic? I just want to build a ultrasonic sensor can meausre the distance between upt to 30 cm only.
By the way, i am using 40 kHz ceramic ultrasonic sensor .
I attach the schematic below and datasheet for ultrasonic sensor.
I would really appreciate to the person helping me. Thank in advance.
I am currently facing problem with building the the circuit for ultrasonic sensor. I am currently build a project for the following robot car follow leading robot car. To keep the safe distance between of following robot car and leading robot car, i want to use the ultrasonic sensor to sense this distance.
So i want to build the ultrasonic sensor to sense the leading robot car. The sensing range of ultrasonic sensor should be from 5 cm up to 20 or 30 cm cm. My problem is regarding the blind zone of the ultrasonic sensor. After reading many article related to ultrasonic sensor, i found most of their sensing range is more than 30 cm. Below the 30 cm is the blind zone.
So i am facing problem with build a circuit of ultrasonic sensor with sensing range between 5 cm to 20 cm(or 30 cm). I don't know how to build the circuit. What is the factor that affect the sensing range of the ultrasonic sensor. Can anyone give me some assistance for the schematic? I just want to build a ultrasonic sensor can meausre the distance between upt to 30 cm only.
By the way, i am using 40 kHz ceramic ultrasonic sensor .
I attach the schematic below and datasheet for ultrasonic sensor.
I would really appreciate to the person helping me. Thank in advance.