Hey. I am selecting a sensor to detect a human hand presence over short distance ( 1cm-30cm). A human will be placing a hand inside a box and ideally I will be reading sensor output in a digital form with my arduino and I will need to do something with that ( not important here).
At the moment, I am using Panasonic CX-421 Infrared sensor to detect human hand, however, this does not work very well because the IR beam is quite narrow and if person puts a hand in a box in a certain angle, the sensor wont even detect that. The solution would be to use 2 or more of those sensors in different positions to detect hand.
The problem with infrared sensors is that they detect any sort of obstacle and not specifically human hand. What I need is to detect human hand and nothing else - thermo sensor would be best but I could not find a right sensor that would just return me a signal based on if there is anything warm infront of sensor not.
So in short, I do not want my sensor to trigger if there is something in its path that is not a hand and in an accident scenario where the box collapses or something else happens where the box beforms and the distance between 1 side of the box and the other side gets closer, I do not want my sensor to toggle - that is why IR sensor is not an ideal for this solution
Would you be able to suggest anything else? Ideally up to 100$ for a sensor
At the moment, I am using Panasonic CX-421 Infrared sensor to detect human hand, however, this does not work very well because the IR beam is quite narrow and if person puts a hand in a box in a certain angle, the sensor wont even detect that. The solution would be to use 2 or more of those sensors in different positions to detect hand.
The problem with infrared sensors is that they detect any sort of obstacle and not specifically human hand. What I need is to detect human hand and nothing else - thermo sensor would be best but I could not find a right sensor that would just return me a signal based on if there is anything warm infront of sensor not.
So in short, I do not want my sensor to trigger if there is something in its path that is not a hand and in an accident scenario where the box collapses or something else happens where the box beforms and the distance between 1 side of the box and the other side gets closer, I do not want my sensor to toggle - that is why IR sensor is not an ideal for this solution
Would you be able to suggest anything else? Ideally up to 100$ for a sensor