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Thread: Basic Passive Entry System Using FB & eyeR?

  1. #1
    Newbie
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    Feb 2006
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    2

    Basic Passive Entry System Using FB & eyeR?

    Hey Nick & Tim and any other brain users that can chime in on this!


    So I've been researching a car pc for quite some time now and have been researching & reading on embedded elec. etc and FB is definitely what I'm needing for a lot of my desired goals.

    The most important goal and the first I wish to tackle though is a passive entry system.

    Essentially it looks like I'll need an eyeR & FB to do this as the FB needs the computer to operate correct?

    So, the main two questions I have are:
    1. How would I integrate a bluetooth transmitter and receiver with the FB?
    If essentially I'm wanting to have a transmitter in my pocket as the "key" and when I let's say get within 10 ft (which from my understanding bluetooth transmits different voltages from different distances so if 10ft = 3v) then it would trigger an event to unlock the doors. And then consequently if voltage < 3v it would lock the doors.

    2. The second question is doing a certain action based on the length a button is pressed. I'll try and make this as easy to read as possible
    1 Button
    4 Possible Actions
    -Action A
    -Action B
    -Action C
    -Off (Revert to no power and no action)

    If button press < 5000ms Then

    If Action = Off then
    Action A = True
    Else
    If Action = A Then
    Action B = True
    Else
    Action Off = True
    End If

    Else
    If Action = C Then
    Action Off = True
    Else
    Action = C
    End If

    End If
    How could I do this? Or can I do this? The vehicle would there again be off for some of these actions so would eyeR be needed for this?


    Thank all of you in advance for any help/support! I'm so excited about this project and all there is to learn!

  2. #2
    FLAC WuNgUn's Avatar
    Join Date
    Sep 2007
    Posts
    1,350
    Maybe Connect2Car MFC is what you need instead?

  3. #3
    Fusion Brain Creator 2k1Toaster's Avatar
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    Mar 2006
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    Colorado, but Canadian!
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    10,052
    Quote Originally Posted by w00tw00t111 View Post
    Essentially it looks like I'll need an eyeR & FB to do this as the FB needs the computer to operate correct?
    Correct, the FB as we provide needs a PC to operate. We dont use/develop the eyeR, but from what I can tell it can operate without a PC especially the IR part as far as I know.

    Quote Originally Posted by w00tw00t111 View Post
    So, the main two questions I have are:
    1. How would I integrate a bluetooth transmitter and receiver with the FB?
    If essentially I'm wanting to have a transmitter in my pocket as the "key" and when I let's say get within 10 ft (which from my understanding bluetooth transmits different voltages from different distances so if 10ft = 3v) then it would trigger an event to unlock the doors. And then consequently if voltage < 3v it would lock the doors.
    It is not that simple at all. Bluetooth is a digital communication protocol that requires lots of handshakes. For this to work, you will need a seperate programmable microprocessor to handle the bluetooth side. It will need to monitor an open bluetooth receiver, wait for when a module is in range, start the handshake and security exchange, and then wait to receive data such as "unlock". Bluetooth is not simply a distance/voltage at all.

    Quote Originally Posted by w00tw00t111 View Post
    2. The second question is doing a certain action based on the length a button is pressed. I'll try and make this as easy to read as possible
    1 Button
    4 Possible Actions
    -Action A
    -Action B
    -Action C
    -Off (Revert to no power and no action)

    If button press < 5000ms Then

    If Action = Off then
    Action A = True
    Else
    If Action = A Then
    Action B = True
    Else
    Action Off = True
    End If

    Else
    If Action = C Then
    Action Off = True
    Else
    Action = C
    End If

    End If

    How could I do this? Or can I do this? The vehicle would there again be off for some of these actions so would eyeR be needed for this?
    You would need to use a lot of logic blocks in MDX to do that, but that means the computer needs to be on for the logic to work.

    I dont know how the eyeR is programmed, so I dont know if that is possible.
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  4. #4
    Low Bitrate GadgetBandit's Avatar
    Join Date
    Oct 2008
    Posts
    100
    As you get near the vehicle, there is no way of preventing the doors from unlocking. That's a breach. Then once your inside, you have to disable the transmitter to lock the doors. I'd stick with the "active" transmitter/receiver to control entry.

    I looked at the wireless and I think one had 4 channels. I'm thinking of using one to fire up the PC from a distance and have a couple inputs for the brain. Justs my thoughts.

    GadgetBandit

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