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Thread: Temperature or Pressure sensor and warning request

  1. #1
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    Temperature or Pressure sensor and warning request

    I know, we are never satisfied, however nifty the device, but here is a request. I would like to monitor engine temp, trans temp, and other temperatures and pressures that require robust screw in sensors that screw into some kind of fluid such as coolant or oil. GM makes thermister sensors that they use in many many applications, which are very reliable and robust and proven, but they are not linear. Similarly there are pressure sensors available that are non linear. Can you set up the fusion so that it can give a read out based on a look up table of observed voltage vs. displayed temperature/pressure?

    A second request would be to sound an alarm should the temperature or pressure or whatever exceed a given level. This could be done through one of the digital outputs, at the same time the appropriate input flashes or does something to identify which input is the problem. If I understand some of the other posts correctly, you may already be able to do this.
    Regards, Druber

  2. #2
    Fusion Brain Creator 2k1Toaster's Avatar
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    Quote Originally Posted by druber View Post
    I know, we are never satisfied, however nifty the device, but here is a request. I would like to monitor engine temp, trans temp, and other temperatures and pressures that require robust screw in sensors that screw into some kind of fluid such as coolant or oil. GM makes thermister sensors that they use in many many applications, which are very reliable and robust and proven, but they are not linear. Similarly there are pressure sensors available that are non linear. Can you set up the fusion so that it can give a read out based on a look up table of observed voltage vs. displayed temperature/pressure?

    A second request would be to sound an alarm should the temperature or pressure or whatever exceed a given level. This could be done through one of the digital outputs, at the same time the appropriate input flashes or does something to identify which input is the problem. If I understand some of the other posts correctly, you may already be able to do this.
    Regards, Druber
    All sensors can be used with the brain. For those sensors you mentioned, you will need another resistor to create a voltage divider and send that into the brain.

    We may sell a cheap little board that is a simple interface to keep everything together. I have to talk to Tim about that. But the software can interpret functions. And a function is easily created from datapoints as an approximation as complex or simple as possible. Right now only power series are supported for non-linearity really, but I can add logarithmic, or periodic or something like that. And I am not sure if you are familiar with taylor series, but all functions can be modeled with a power series or a specific range, so techically right now all functions are possible.

    And yes you can turn an output on at a certain threshold, or you can play a sound at a certain threshold, or change the picture (to an animated flashing warning gif), or anything like that already.
    Fusion Brain Version 6 Released!
    1.9in x 2.9in -- 47mm x 73mm
    30 Digital Outputs -- Directly drive a relay
    15 Analogue Inputs -- Read sensors like temperature, light, distance, acceleration, and more
    Buy now in the MP3Car.com Store

  3. #3
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    Thanks for the reply, Toaster. I downloaded the skin designer which gives me a much better feeling for how it works. Are you referring to developing a quadratic or 3rd, 4th, 5th or higher order equation to fit a set of points? Then enter that equation in the formula box of the configuration screen? Is using the skin designer documented somewhere?

  4. #4
    Fusion Brain Creator 2k1Toaster's Avatar
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    Quote Originally Posted by druber View Post
    Thanks for the reply, Toaster. I downloaded the skin designer which gives me a much better feeling for how it works. Are you referring to developing a quadratic or 3rd, 4th, 5th or higher order equation to fit a set of points? Then enter that equation in the formula box of the configuration screen? Is using the skin designer documented somewhere?
    Yes that is what I am talking about with the equation. And I am trying to get the skin designer documented but I keep changing it to make it better, so by the time I get anywhere, it is outdated!

    For now though, if you go to the website, then click the FAQ/Help section, there is then an area for the skin designer. There is one that is the full tutorial which is from opening it out to making an output. And I am not sure if it goes all the way through making an analogue input.
    Fusion Brain Version 6 Released!
    1.9in x 2.9in -- 47mm x 73mm
    30 Digital Outputs -- Directly drive a relay
    15 Analogue Inputs -- Read sensors like temperature, light, distance, acceleration, and more
    Buy now in the MP3Car.com Store

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