I have to provide a project for one of our valuable customers and we need your wise input/feedback/suggestions on the following:
We bought the Rduino UNO R3 + motion sensor + infrared sensor + Ethernet shield + IO Expansion shield, the target is to track the presence of jewelry box on the showroom and detect any human motion near to that box, what is your recommendation to implement for such case, can you help us with the coding ?!
Can we compensate all the three boards (UNO R3+ Ethernet shield + IO Expansion shield) with one board ?! What will be the limitation on number of sensors on such suggested board and what is the maximum distance to connect those sensors ?!
This is top urgent case, if we success to achieve the requirement, we need to order more “boards” and sensors.
Track the presence of the box? Will it be moving? Is this supposed to be an anti-theft device?
What do you mean detect human motion near it? Who will move the box if not a human?
If it is stationary, just put a pressure sensor under it. A simple tactile switch should be just fine.
If you don't want people approaching it an array of ultrasound sensors should be enough to detect presence.
Why do you think you need Ethernet and IO Expansion shields?
Why not mount a camera above the box and use some fancy software on a PC to detect movement in the image?
That would be far beyond the capabilities on an Arduino. But might actually provide some security - including pictures of any villain. Display the camera image near to the jewelry box as a deterrent.
Before buying hardware for a serious project a careful assessment of the requirements seems like a good idea. In this case, what are the actual (as opposed to imagined) risks that must be guarded against, and what is the scope for false alarms that would be irritating to your customers and to your customer's customers.
...R
Thanks for your reply guys and sorry for the vague information.
We will place motion sensors in a museum corridors to detect any HUMAN motion during closing hours, then push the data collected from the sensor (time stamped events) to the network using the Ethernet shield, we want to reduce the usage of the cameras as possible that's why we are using sensors on corridors.
Not an urgent project. then 
...R
the target is to track the presence of jewelry box on the showroom and detect any human motion near to that box,
Be careful what you wish for.
@robin2: We already working on the project which means let me say "important" now not argent 
@AWOL: "We will place motion sensors in a museum corridors to detect any HUMAN motion during closing hours, then push the data collected from the sensor (time stamped events) to the network using the Ethernet shield, we want to reduce the usage of the cameras as possible that's why we are using sensors on corridors."
it is not meant to monitor human, it is more for security
m_Dawas:
@robin2: We already working on the project which means let me say "important" now not argent
It is difficult to help someone who does not respond to replies for 2 months. It makes for a very slow dialog. How about checking in at least once every day?
...R
Look into these "curtain PIR"s, they set up a wall of detection and trigger an output when the wall is broken.
Set up 2 on the ceiling at right angles to make a vertical triangular zone around the display item, with a wall as the back of the triangle.
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|
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| x \ angled sides are the curtain PIRs
| x / xx is the object
| / | is the museum wall
| /
|/
@Robin2: I here to solve a problem not to keep arguing !
Sorry for not checking the post for 2 months but this is due to work circumstances.
@CrossRoads: Thanks for your suggestion
This might work but we are looking for sensors in the same size of the Arduino ones.