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General => General discussion => Topic started by: mcgee9t2 on 20 October 2011, 21:50
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ok for uni we have to do a project. (i.e planning designing building ect.)
ive came up with an idea to do a security device for my car.
what i was thinking was one of those cameras for if you have a bump or anything and you press a button and it saves the last ten minuits of film.
however im having trouble as i cant find any way to have the device recording and continuously record over its self so it always has ten mins of footage untill you press the button on which it will stop recording and save the last ten mins.
i was thinking of mountin one camera at the front of the car (behind the rear veiw mirror or in the rear veiw mirror. and in the boot in a vw badge with a hole in it).
anyone got any ideas
and before you say buy a kit off ebay, i cant it has to be made myself.
i was thinking of some kind of controller but havent a clue as to were to start looking, had a look at a few kits online to see what there using but non of them tell you anything about it it just says things like will record for this long the cameras are this quality bla bla bla.
any help?
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only have enough space to record the last 10minutes of data. press stop after an incident, and you have what you need :grin:
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only have enough space to record the last 10minutes of data. press stop after an incident, and you have what you need :grin:
the problem im having is..
as far as i can see theres two ways of going about it:
1) have a system were it records and saves to some RAM then when you press save it saves everything in the RAM as a file.
2) have a system were it records over its self. i.e 1 2 3 4 5 6 7 8 9 10 then 11th min would right over 1 or they would all shuffle down and 11 would go were 10 is and 1 would be deleted. the problem im having is finding a processor or something that will record and then save it. tbh i wouldnt know were to start looking. or how to program something to do this.
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Sorry. I didn't get passed the " I'm at Uni" yet get etc.. wrong. :lipsrsealed:
In answer. How about a continuous recorder to a terabyte HD that resets itself after the ignition is switched off, by the key.
That way, it begins recording on ignition and stops when the engine is switched off (after a continuous delay period of say 20 minutes)
Much like an aircraft black box recorder. :rolleyes:
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Easiest way would be to have 3 sets of memory.
One saving data as it's recording, one storing 10 minutes of data as a failsafe and one empty memory.
When the recording one is full it becomes the failsafe memory, the previous failsafe memory is deleted and becomes the new empty memory and the empty memory becomes the recording memory.
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What course do you do?
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http://www.ebay.co.uk/itm/HD-720P-IR-Night-Vision-LEDX10-Car-CAM-Video-Camera-Accident-Recorder-DVR-8G-SD-/270831710482?pt=UK_CarsParts_Vehicles_CarParts_SM&hash=item3f0ed3f112
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Tme. that sounds like a possibility. will have a look into that. cheers
also jack cheers will do a little looking into that too.
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Isn't the main problem with that, that when you have an accident your first thought is unlikely to be 'must press the button on the camera'? Would there be no way of making it automatically save the footage by having it detect a bump or going off with the airbag or something (in addition to a button). I guess that would only work for more major accidents but those are the ones when you won't be thinking about pressing a button.
Mighty's idea sounds better tbh...
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Isn't the main problem with that, that when you have an accident your first thought is unlikely to be 'must press the button on the camera'? Would there be no way of making it automatically save the footage by having it detect a bump or going off with the airbag or something (in addition to a button). I guess that would only work for more major accidents but those are the ones when you won't be thinking about pressing a button.
Mighty's idea sounds better tbh...
would be an idea yes, but this is only a uni project, and as its all funded by meself ide rather not pay loads for things like sensors and try to program it all up so that it goes off when the sensors detect it.
the reason for the ten min saved time is so that if you have a bump get out of the car and give details ect you still have a chance to save the recording. ten mins was just an example, could make it a hour or something like that so it would have more time.
good idea though linking it to sensors, though just wouldnt be able to afford to make it and dont want to be butchering my bumpers ect.
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I don't know really, if I were in an accident I'd probably turn the engine off and take the keys out.
Maybe you need a little screen or a warning noise that tells you when the TB data is full and asks you do delete it yourself so that it never automatically deletes data that you might need.
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vhs tape that is 10 minutes long and attatched in a loop?