Fibaro Motion Sensor

[Guest bozman]

Hi,

I'm thinking in investing in a Fibaro Motion Sensor.

In the comercial ad it mentions and shows about counting persons in a room.

Is that actually working or is it in a future release?

Does anyone use that feature yet?

Regards

Boz

[deanrparry 19]

Hi,

I'm thinking in investing in a Fibaro Motion Sensor.

In the comercial ad it mentions and shows about counting persons in a room.

Is that actually working or is it in a future release?

Does anyone use that feature yet?

Regards

Boz

I am very interested in an official response to this question aswell!

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I own approx 11 sensors...

[akatar 208]

for counting you Always need 2 sensor (at least)

and then there is still room for errors

[Guest bozman]

Akatar why 2 sensors?

[akatar 208]

for the walk direction?

if one is breached, you have to know where the person is going to.

in the room or out the room

so number of persons = +1 or -1

[Guest bozman]

Aha for walk direction you would need several sensors.

I'm thinking of more counting persons in a room, is 1 or 10 persons in a room.

Is that working with the Fibaro sensor?

[akatar 208]

no it's not.

how do you want to do that?

if the sensor sees someone, is it a new one, was he already here, is he leaving? etc

[deanrparry 19]

personally cannot see how can achieve this?

person 1 walks into room

sensor 1 > sensor 2 = kitchen 1 person

person 2 walks into room 1 minute later

sensor 1 > sensor 2 kitchen 2 persons

person 3 walks in directly behind person 2

sensor 1 (still breached) > sensor 2 (still breached)

am i wrong? happy to be told different that is what learning is all about!

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[Guest bozman]

Ok I'm not sure how to interpret this then.

Isn't this a counting feature?

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[akatar 208]

like i said, room for plenty of erros.

1 person walking in the kitchen, same time 2 persons walks out

these things happen

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sensor will see both as one

[Guest bozman]

OK, thanks akatar!

I guess you saved me some time and money and not investing in this then!

[akatar 208]

maybe fibrao can inform us how this could be done?

[Guest merylion]

Generally reliable person counting is not very easy to perform

What about if two persons are walking in the same time?

And many other scenarios where automated way is not very easy.

There are some systems but they are based on analysis of video but it is very complicated and expensive.

I have another one question.

I am trying to do easy reliable luminance recognition.

I have mounted Fibaro Motion sensor outside.

Now I am observing this for last few days and can see that luminance reported is quite strange. When sun is pointing straight onto sensor it can show even more than 9000 Lux.

When it points out from angle it can drop below 1000 Lux. Then if sun goes behind sensor then some reflection from walls which are far away (100m white color non reflective) gives more that 7000 Lux.

I need to recognize when sun is shining straight onto sensor and I should expect luminance to be much higher when sun is shining directly on sensor not from reflection.

Generally luminance level is not exactly showing how stong sun is shining

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Anyone have any observations? Is there anything in parameters what I can change? Insert any additional filters on so?

Regards

Marcin

[Adam.Bewsher 2]

Hi everyone,

The limitations that have been mentioned are unavoidable. The minimum setting for the motion sensor is 1 second. Which means if two people enter a room within 1 second of each other, there is no way of detecting the two people apart. If you need accuracy like this, perhaps a better option is a universal sensor connected with two light beams in the door frame - this still wont detect two people walking through the door at the same time sideways, but the chances of this are much less - one would assume!

However, here is a setup we have used here in the Fibaro UK office.

Some things that need to be considered:

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/emoticons/default_icon_arrow.gif" alt=":arrow:" /> The motion sensors need to be above the door frame so the frame acts as a filter - so the outside sensor doesn't detect the inside one and visa versa.

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/emoticons/default_icon_arrow.gif" alt=":arrow:" /> The sensors need to be rotated inwards so that only a very narrow beam of detection is looking straight down. This stops the movement in the room triggering the device.

In essence you are narrowing the beam to two areas just on either side of the door.

Making the sensors more sensitive

Change these parameters in both motion sensors:

Parameter 1 = 8

Parameter 2 = 0

Parameter 6 = 1s

Save this and wake up the device to let it know things have changed.

The global variable

We need a global variable to contain the count of people in the room. We have called ours PeopleCount, but feel free to change that - especially if you're counting more than one area.

The code

Don't forget to change the trigger device IDs and the two local variables motionInside and motionOutside to the IDs of the motion sensors you want to monitor!

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Adjustments

See how it works. Adjust the height of the sensors if there is interference between inside and outside. Rotate them further in if there is interference from within the room.

The local variable debugLevel can be changed to give more debugging detail. Try values of 5, 10, 11 and 20.

Things you could try

If you have a door sensor, it would make sense to ignore movement unless the door is open - but don't ignore it completely, you may be wanting to go out through the door you just opened... or maybe you could ignore it completely - time to experiment some more

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Happy automating!

Adam Bewsher

[ Added: 2014-08-13, 17:58 ]

I have another one question.

I am trying to do easy reliable luminance recognition.

I have mounted Fibaro Motion sensor outside.

Hi Marcin,

The light sensor chip is not on the surface of the motion sensor, but inside, so it makes sense that light at an angle could be perceived as less intense than light reflected into the device (and on to the sensor).

(It's not really a good idea to mount the sensor outside by the way.)

It may not be exactly what you're looking for, but have a look at

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at the article on constant light levels - there may be something in there that you can use.

Happy automating!

Adam Bewsher

[fergalmccarthy 5]

Brilliant work on the tutorials Adam, credit where credit is due, these are exactly the advanced scenarios people are looking for

[1152 33]

Well spoken, a lot of users have been asking and waiting for this type of documentation and help. Applaus!

[Adam.Bewsher 2]

Thanks for the feedback guys!

I've made my post from this thread into an official tutorial:

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It has been slightly modified (one line has moved down in the code) so it will work better if there is more than one door in the room and the scene is duplicated.

Happy automating!

Adam