Arduino Forum

Topics => Science and Measurement => Topic started by: DebarghaRoy on Jan 01, 2019, 01:55 pm

Title: Read data from moving vehicle
Post by: DebarghaRoy on Jan 01, 2019, 01:55 pm
I need to read data from a vehicle moving at speeds of about 80kmph. I would like to know, what technology to use, to read the data and how to represent the data for fastest retrieval from the vehicle.
Title: Re: Read data from moving vehicle
Post by: hammy on Jan 01, 2019, 02:02 pm
How much data , how far from the vehicle, what data rate ... etc.

Radio ? Long piece of wire ?
Title: Re: Read data from moving vehicle
Post by: dougp on Jan 01, 2019, 04:21 pm
I would like to know, what technology to use, to read the data and how to represent the data for fastest retrieval from the vehicle.
I suspect the form and quantity and types and measuring period and frequency of measurements and required accuracy of the data may have a bearing on how is it collected and represented.
Title: Re: Read data from moving vehicle
Post by: GijKieken on Jan 01, 2019, 07:10 pm
Use  interrupts.
Title: Re: Read data from moving vehicle
Post by: DebarghaRoy on Jan 01, 2019, 07:17 pm
How much data , how far from the vehicle, what data rate ... etc.

Radio ? Long piece of wire ?
The idea is to retrieve the information such as model number etc. of the vehicle from a maximum distance of about 3 feets.

I was considering IR for detection system and some sort of reflecting surface for the data representation, but the problem is, IR detectors may be disturbed by the sunlight during day and also, if there are things such as mud etc. the detection system might fail.
Title: Re: Read data from moving vehicle
Post by: groundFungus on Jan 02, 2019, 02:22 am
Rf24 radios may be a good choice.  See the simple rf24 tutorial. (https://forum.arduino.cc/index.php?topic=421081.0)
Title: Re: Read data from moving vehicle
Post by: wvmarle on Jan 02, 2019, 05:42 am
Moving vehicle - 3 ft distance. That's probably a fairly slow moving vehicle, taking many seconds to go in and out of range, you it wouldn't get this close to the detector (or is the detector in the road surface?).

No worries about speed here, not much data: just a few fixed data points - as this are apparently known vehicles all you need is an identification/serial number, the rest of the data of the vehicle you would have in your database.
Title: Re: Read data from moving vehicle
Post by: MarkT on Jan 02, 2019, 07:00 pm
Would ANR be enough?
Title: Re: Read data from moving vehicle
Post by: DaveEvans on Jan 04, 2019, 03:04 am
That's probably a fairly slow moving vehicle...
I need to read data from a vehicle moving at speeds of about 80kmph...
80,000 mph <> slow






;)