What kind of sensor that able to detect widely scope?

Other Hardware Sensors
1

Hi everyone

I now have a project which is using the arduino platform.

I'm doing an electronic blind walking tool. But now my requirement is my sensor need have widely range that is widely degree that can detect the obstacles and holes so that the blind walking tool able to detect the obstacles from left, right, in front. However, I don't want to put too much sensor in my electronic blind walking tool due to too costly.

So, may I know which sensor able to fulfill my requirement and can work in arduino platform?

I have search between the ultrasonic sensor(HCSR04) and IR sensor.
But both of them cannot do it in widely range.
So, any suggestion of the sensors can use in this project?
Thanks .

2

No sensor can do what you want, and certainly not any combination that would also be cheap.

Sensors like scanning laser range finders, combined with a lot of clever programming on a reasonably powerful computer, will do the job.

3

Consider that what you want isn't that far from the demands of an autonomous vehicle, so go and
see what they use (LIDAR, computer vision, ultrasound)

4

If your single sensor would have a very wide range, you would have no way of telling in which direction the obstacle is. So you need sensors that have a very narrow range, and then scan the area. That's what makes them expensive.

5

Hi,@wvmarle

So now if i want my single sensor which have the wider range, but no need tell the direction of obstacle, is it ultrasonic sensor HCSR-04 is more suitable than the IR sensor?

Thanks.

6

What stopping you from having multiple sensors? Their detection angle is limited and you don't want to stop someone from walking forward because there's something to their left.