BAT Appt 6212 Technology Project (Automotive)

Week15
06th June 2014

Had a meeting with Simon for discussing the last step so that we can further move on and finish our work, we discuss for the 555 timer which he made us understand will not suite this project. so we head to next step by using

• Sensors
• Converters
• Logic
• Primary Outputs 
• Secondary Outputs

So we used multisim for making our further electric circuit, we also figure out the working of drive by wire,

Below is the electric diagram of Subarudrive by wire system

As our 555 timer idea was already out, so next step was to look for gates which can be used for the perfect combination so as to process the signals.

• NOT
• AND
• OR

BAT Appt 6212 Technology Project (Automotive)

Week14
30th May 2014

After the last class of the presentation we went to meet Simon for further discussion on the right way of connectivity for throttle cut off system as on our ends we put are best to search but some where was missing with the right information for the connectivity steps. But unfortunately  from long time we are trying to take out right circuit for our project which is the main reason of putting our self down, as once we make a right circuit than we can easily design that on multisim and which will help us to simulate the combined system using our inputs and outputs.

Somewhere after long discussion between me and my group mate we decided to go for 555 timer chip which  already has a logic circuit connectivity inside it so on the other hand we dropped the idea of using the picaxe chip for which we have to do programming, for which both of us dont have a single idea.
So considering the 555 timer

We try to call Simon to talk about it but unfortunately we couldn't meet him, we hope on Friday we can see him and talk about this to make the circuit as soon as possible and carry on with the final reports for our Project.

BAT Appt 6212 Technology Project (Automotive)

Week 13th
23rd May 2014
Starting with our presentation day we both got on time and was ready to present our demonstration on the stage 2 which I previously mentioned was planned to show the outputs and the connectivity.
Following were the 3 outputs mainly considered:

1. Seat Belt Warning Light
2. Buzzer System
3. Drive By Wire Throttle

Starting from the very 1st Seat belt warning light:

As everyone knows about as it is commonly used in every car to warn the driver to wear the seat belt, it is situated in the dashboard, the main description of warning light can be as follow:

•Seat belt warning lamp must blink for 6 seconds from IG. ON with 0.6 sec. frequency, 50% duty, and chime bell should ring too.

•If the IG. is turned OFF within 6 seconds, the warning lamp and chime bell output should be OFF.

•In case of the seat belt switch is ON, the chime bell sound must be stopped immediately, but seat belt warning lamp output should be ON during 6 seconds 

Warning light circuit diagram:

Second was the Buzzer system:

Alert avoid the accidents and for this REMINDER with Visual Indicator is provided to remind the driver.

Features

•If Seat Belt not fasten “After 15 second of ignition on status”. 3 times Audio massage & LED

•Still Seat Belt not fasten again & again Audio & LED flash after every 20 seconds (until seat belt fasten or mute).

DESCRIPTION:With the ignition switch turned ON and driver seat belt unfastened, the seat belt warning chime will sound for approximately 6 seconds.

• BCM (Body control module) receives seat belt buckle switch (driver seat) signal from combination meter with CAN communication line.

• BCM detects the ignition switch turned ON and the seat belt buckle switch (driver seat) is ON, and then transmits buzzer output signal (seat belt warning chime) to combination meter with CAN communication line.

• When the combination meter receives the buzzer output signal (seat belt warning chime), it sounds the buzzer.

Circuit diagram:

Third and the main output for out stage two was Drive by wire throttle:

Drive by wire which has no mechanical linkages, saves weight, is more accurate and has better response times however the cost to make this is greater than one a regular cable throttle.

Gas pedal à Sensor à ECUàMotoràButterfly ValveàThrottle Position SensoràECU

BAT Appt 6212 Technology Project (Automotive)

week 12th and 13th
16th May 2014

          

          As this was the presentation day for most of the people but me and Anuj was presenting next week our outputs were all ready to go but due to some circuit confusion for the throttle cut we had a meeting with MR.Anura and Mr.Prabhat.

            Both of them really helped us and came with the idea picaxe chip, but here was another thing to program the chip and make the ECU fool. so as to put throttle into the idle mode after 20km/h speed with drivers seat belt. the harder part was the programming the chip but we both decided to go for the presentation n c how far we go with it. 

BAT Appt 6212 Technology Project (Automotive)

Week 9th  - was uni vacation
25th April 2014
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week 10th - uni vacation
2nd may 2014
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Week 11th 
9th may 2014
We both planed to catch up on Monday after the mid semester break and shared the search we both did on our ends during the break time as we already knew our target to hit on next presentation which was mainly taking about our outputs which were:

1) Buzzer 

2) warning light 

3) Throttle cut off over 20 kph when seat belt is not buckled by the driver.

As to perform this we decided to USE  the drive by wire throttle system.

Same day we also took appointment with Mr.Anura so as to discuss with him and make our project into the next step.

BAT Appt 6212 Technology Project (Automotive)

week 8
18th April 2014
It was the middle of the semester time,  the break begins from 18th but on the other side was not a rest day for us we have to make sure we have sufficient data and for that we begin our search on some logic gates and circuits so as to try to make it and think which way we can make it. On the other side we loaned the book called "Performance Electronics for Cars" from Simon so as to go through some circuit diagrams and as we were plan to follow the gant chart as the next demonstration was after stage 2 where we planned to talk about the outputs.

BAT Appt 6212 Technology Project (Automotive)

week 7
11th March 2014

Was the day of our presentation, we started describing the 3 sensors for the input we are going to use. searching on them made me learn many things like the way they performs there functions and how they work as starting from the very first sensor which is

VSS (Vehicle Speed Sensor): As we know seat belt is one of the most safest part when it comes to be safety in vehicle, and all the vehicles in automotive industry use it.By the safety belt designers in recent years a Reed Switch sensor has been discovered as being the most reliable and best way to detect the engagement of seat belt.
Features/Functions:

•Can activate & control the switching function from the one side of the seat belt buckle.

•Is designed to handle the high shock environments

•Can be operated in dirty environments

•Is hermetically sealed

•Lots of reliable switching operation

•Reliable switching

•Dynamically tested contacts

> Second sensors which i searched n presented was the SOS

SOS(Seat Occupany Sensor): The occupancy sensor consist of the flexible sensor mat, which in inserted or installed into the vehicle seats.The mat consists of two sandwiched carriers sheets held together.

•Increase pressure on the mat will cause the electrical resistance change, which informs the system that the seat is occupied or not.

•The vacant or occupied seat will correspond to an open or short circuit.

•The occupancy on the seat is only detected for higher weight depending on the specs mostly 40 kg.

•The occupant detection technology will not affected by the

• Weight,  seat belt tension, or movement of the passenger.

•Furthermore, the system will not be triggered by inanimate objects placed on the seat.

FEATURES OF SOS:

·Senses immediate presence of pressure applied to pad.

·Bend Sensor / Potentiometer.

·Small size is ideal for embedded applications.

·User defined thresholds for alerts and notifications

>And 3rd sensor was the VSS(vehicle speed sensor which was performed by my group mate) 

BAT Appt 6212 Technology Project (Automotive)

BAT Appt 6212 Technology Project (Automotive)

week 6
04/04/2014

 week 6, we started more search as for our next demonstration presentation, we consider to present few more data on our inputs for this demonstration, which are 

•Inputs

1.SBS  2.VSS  3.SOS 

1. Seat belt Sensor:

2.Vehicle speed sensor:

3. SOS

              Above all three sensors are the input for are project and mainly are presentation was on how they work and there functions.

BAT Appt 6212 Technology Project (Automotive)

week 5
28/03/2014

In today's lesson we had to do a presentation on the topic we choose along with the initial report on it. Me and my group mate Anuj presented the basic information on our project which was named as "No Seat Belt No Drive". so our idea was if the vehicle is driving over the 20km/hr and the seat belt is not buckled then the driver can’t drive over 20km/hr and it will bring the throttle on the ideal speed. from which it will restrict the driver to drive above the  provided limit and provides more security or safety for the passenger as well as other road users. we will be using logic table and few sensors to do that or programmable chip. We will discuss further with our supervisors and further move on with the project.

BAT Appt 6212 Technology Project (Automotive)

week 4
21/03/14
It was the day of presentation for all of them who have selected the idea last week and finalised to work on it,but due to too many ideas we were unable to work on one, but with some more ideas we came back to roman to talk about them and finalise one of them. So now we thought about the safety in todays vehicles, so we selected the seat belt to work on with, so if the driver n passenger is not wearing the seat belt it will not allow to drive it and he said yes for this project. Then we had a talk to Simon about this and took some ideas out like how we gonna restrict the drive.

BAT Appt 6212 Technology Project (Automotive)

WEEK3
19/03/2014

The class started with the sunny day everyone was in groups and talking for there topic with Mr.Roman. but me and my mate anuj were confused for the topic as he had some plans from which i was not satisfied n some were too complicated. Then finally today we had a talk with Mr.Roman about our ideas and we discussed it. one of my idea in which im really inn, is to make a watch instead of key to enter the car and also have a 24*7 look from inside and outside of the car. As these days the smart technology of smart key is useful but somewhere we have to keep the key in pocket, which should be kept safely but using a watch can also be useful to protect the key and can also be added with many other options in it.

 Mr Roman liked my idea but said it can take too long for us to do something like this and said to go more deep, search for more ideas.

BAT Appt 6212 Technology Project (Automotive)

WEEK 1 & 2
28/02/14 & 07/03/14

First week was the week when i missed the class because of my unwell health but in the second week i gather all the information of the first week.
So starting from the week 2, today i step into the Mr.Romans class Technology Project once again as he was my old lecturer who taught me suspension and I was happy to learn from him because he is really helpful and supportive lecturer. Assessment package was discussed in the class and the due dates table was also handover to us. In technology project we have to work as a groups and find 3 ideas each and discuss with Roman and later on he can help us in selecting one, and after the topic in particular field we can choose supervisors related to the topic in field. In this technology project we can work in groups and i found my partner too Anuj. both of us started with the search in the topic and we were also taught about the blog, which we need to write every week. Lets see what our final topic is and once final, I will give my best to learn as much as possible during the course and will contribute as much as i could in all aspects concerned.