User:Carlos6913/ENES-100/project 1/CDIO

Problem Statment
Develop better operation manual. Error Mesage weirs to connect to a power sours and TPMS, 12 volts source needed weirs and tpms put together with tape to complete connection, and it work control unit is not reading the sensors This is an idea that fail, the idea was to use this tier to read its pressure, but it doesn't have a air valve to insert the sensor this is another idea that fail, sensor is mounted in top of a bottle top to read the pressure of the bottle problem is that it didn't fit This is a idea with a little success, this is the reading of the sensor inside the tier

Second task: Fake Tier
This is a simulation of a tier, The purpose of this is to have the Tier Pressure Sensor to read pressure. The materials and tools used to make the fake tier are: A plastic mayonnaise with a big enough top for the sensor to fit, a tier pressure sensor with it's valve and control unit, a screw driver, thread seal tape, and an air pump.

Heating the screw driver The reason of this is because if try to drill the top it would crack, so the best way to it is to heating a screw driver and melt the hole on the top of the bottle After the hole was made, there is some plastic residue left over. The best thing to do is to sand it of to have a good seal when put the sensor. This are pictures of the lefter overs. and this are pictures after sanded   this makes the hole more smooth, so the the sensor would make a good seal when place. This is the top and the sensor with it's valve put together. The sensor has to be tight so the air doesn't escape. Now, the sensor and the bottle put together. So the idea right here is to put pressure in the bottle so the sensor can read it, but in this fist attempt the air was escaping http://www.youtube.com/watch?v=DAWTjhOE8bw. To seal the escape you can use thread tape seal  a lot of tape was needed to seal the bottle   But at the end, there was still a very small leak, and here is another youtube video showing the small leak using soup and water to see the leak http://www.youtube.com/watch?v=Fiw1TBdfYJA. electric tape was use to hopefully seal the small leak and hold the top in case the pressure pops it. At the end as a result we end up with Art this is the valve of the Fake Tier

Testing of the Fake Tier
This is a video of reading the pressure of the Fake Tier. http://www.youtube.com/watch?v=E7Y2NMGYAs4

Second tier simulator
on this picture we try to seal the bottle with silicon because the air was escaping from the threads.

after the attempt of sealing the bottles, we tested and this is a pictures of the results. The problem here is that the leaking problem was not fix by the silicon. The bottles will not hold too much presure but to turn on the sensors a significant amount of pressure is needed.

Next step for the fake tier
this picture shows a PVC pipe and it's seal. This pipe is already seal from one side. The idea here is to drill a hole on top of the pipe, then put the sensor to the hole that was drilled. After the sensor is place, seal the pipe completely.

This picture is a look on the inside of the pipe. This. On this picture, just imagine that the sensor is in there, and that is how is going to look like. After the sensor in in there, you can seal the pipe and start putting pressure inside. you should get pressure and this would hold a lot of pressure. This fake tier is something that would diffidently work because is complacently seal and you wouldn't have the problem of the previous fake tiers made out of mayonnaise bottles.

Testing results of first fake tier
this last pictures show the ending of the first fake tier that was made. What happen here is the when testing this fake tier pressure was put inside the bottle. pressure was being added and added because the control unit was not reading the sensor jet. So, the control unit never read the sensor and when more pressure was put in the bottle it exploded. The way it exploded was, the top broke into peaces as you can see on the picture. Now, after the bottle exploded, the question that came up was, why didn't the control unit never read the sensor? Surely the bottle had more than 20 psi because on previous testing 25 psi has been put inside the bottle and it didn't explode. so that is something interesting to think about. Why didn't it ever read the pressure? is there a timing for the sensor to start communicating?