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m0nk
Joined: 18 Jan 2005
Posts: 14
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 18 Jan 2005 18:18 New GPS/GSM/GPRS tracking device |
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I would like to announce here, the release of a new GPS/GSM/GPRS tracking device dedicated for AVL application.
This device incorporates an industrial GSM module produced by Telit, Wifi 2.4 Ghz (300m range) for management & service, on-board acceleration sensor which performs anti fraud and accident alarm function, an internal UPS supported by 4xAA 1200mA Ni-MH.
The ISM block provides an extensive usage solutions (new on the GPS market) which allows clients to control the whole fleet,
to download the memory log and reconfigure each device, without the need
to plug-in into a serial port.
Internal functions provides the remote configuration for persistent reporting over SMS & GPRS at 1 or 10 min. system loop, geolocation on request by call, provides the internal status and vehicle status.
If you are interested in this subject please enjoy visiting:
http://www.gps4net.com
Download section provides documentation in PDF format.
Also there is a forum for related questions at:
http://forum.gps4net.com
Regards,
m0nk
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oohp
Joined: 20 Jan 2005
Posts: 1
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| 20 Jan 2005 13:09 New GPS/GSM/GPRS tracking device |
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| How to the antifraud and accident functions work?
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m0nk
Joined: 18 Jan 2005
Posts: 14
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| 20 Jan 2005 13:43 Re: New GPS/GSM/GPRS tracking device |
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Hi Bast!
Thanks for visiting our site and forum. We hope to make that forum a reference in GPS area.
The ISM has an implemented algorithm for broadcasting over the network to determine new members in area. It was implemented similar with the ARCNET token bus protocol. Therefore after one broadcast the command center will know each address of device and then will lock that device and communicate only with that one.
Once the transaction is complete you can choose another device from the list and play with..
It is possible to implement an algorithm in the command center software to broadcast periodically and then if a new device gets in the area to perform download, erase memory, perform a special configuration.
Another function is to plug a ISM dongle to a laptop or PDA and navigate using the GPS on that vehicle. Linked to this it is possible to provide an application to security companies to chase stolen cars, and once the car gets in the area to see it on display. Many functions could be developed on top of this solution that are still unknown to us and could be discovered by out clients..
G4N-15-EES is dedicated especially for distribution companies. They need to know if their agents are checking orders at certain stores, shopping places, etc..
It doesn't provide a GSM module because supervisors are not looking to trace the agents in real-time. Thus this device is far cheaper and is suitable for them.
Once the agents return to HQ the information might be downloaded in a certain application where the supervisor may check the whole route.
Regards,
m0nk
Added after 11 minutes:
Ooph,
The acceleration sensor is an active component. It is able to process the static and dynamic accelerations over XY axis.
This means that when the car is stopped and engine off, after several second it memorize the static accelerations. When the car is shaken by someone it will detect new static acceleration which will be higher then those stored and will send an alarm message to the car owner and command center.
During this time at each system loop a dedicated bit flag will indicate the possible fraud until the engine is started again.
Now, if the car is moving and there is an accident in place (not just a scratch) it will detect the dynamic accelerations and over a certain peak it will send an alert message to command center and owner. Also a bit flag will be included in the log to indicate the position of the accident on the map.
M0nk
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orikfa
Joined: 15 Jan 2004
Posts: 83
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| 24 Jan 2005 16:39 Re: New GPS/GSM/GPRS tracking device |
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| how secure is the system? may anyone h(at)ck the sys and use the infos to track user movements? (1.e. a thief may write down a statistic on when the user is away by home and then steal at home)
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m0nk
Joined: 18 Jan 2005
Posts: 14
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| 24 Jan 2005 23:44 Re: New GPS/GSM/GPRS tracking device |
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Hello orikfa,
what you mean about "how secure is the system?" ????
Do you mean hacking the device via GSM-GPRS???
This sound a little strange to me. Please explain more what you mean.
Regards,
Dan
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aNdreiBuuu
Joined: 30 Apr 2001
Posts: 394
Helped: 11
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| 24 Jan 2005 23:55 Re: New GPS/GSM/GPRS tracking device |
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some times ago, me and my ex-company colegue thinkin' around of very, very similar systems...
anyway:
| Quote: |
| Now, if the car is moving and there is an accident in place (not just a scratch) it will detect the dynamic accelerations and over a certain peak it will send an alert message to command center and owner. Also a bit flag will be included in the log to indicate the position of the accident on the map. |
... the accident prediction is not an easy task. The analysis of the acceleration vector on XY axis based on treshold prediction is not enough... the false allarms can be done by ABS system breake. For this kind of analysis you need to add Z axis and make a "volumetric" realtime analisys based on derivative components and fuzzy logic math...
| Quote: |
| how secure is the system? may anyone h(at)ck the sys and use the infos to track user movements? (1.e. a thief may write down a statistic on when the user is away by home and then steal at home) |
this kind of the ISM communication (multichannel, in burst mode) based on header autentification is not quite secure... is better to use WiFI with AES ecryption...
regarding the price, take a look at falcom XF55-AVL at:
http://telecom-store.de/cgi-bin/sellsystem.cgi?ref_id=dsc&page=../jump.html&keyword=INT-53049-0 (it is under 160 EUR), it has a powerfull processor and the eCos operating system with fully featured TCP-IP stack, GPS data management, aso...) You can simply and the acceleration sensor, the WiFi modem to make a wonderful product below 300 EUR and more secure...
anyway if you are searching on the net you can easely make some similar devices under 150-200 EUR...
Hmmm... it could be an interesting ideea to start in elektroda an open GPS/GPRS project.
At the last I think it is a wonderfull ideea which can be inproved!
Congratulation m0nk!
Regards,
//a
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m0nk
Joined: 18 Jan 2005
Posts: 14
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| 25 Jan 2005 0:29 Re: New GPS/GSM/GPRS tracking device |
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Hei dude!
Regarding your theory about acceleration determination you are 100% right, but that's pure theory. Did you ever see the airbag's electronics??? I bet you didn't. Over there you get exactly what we did but with a piezo sensor. Builting up our solution I had a consultant from Safety Components. Those are airbag producers working for Porche, Audi, GMC ... In practice it looks more simple. It is enough to determine the shock peak in a certain time interval! If you expect to see a fuzzy in a car...you can forget about it! The airbag system is independend from the onboad computer on over 80% of cars on the market. The production costs are less then 100EUR/ system. For sure you will buy it for over 1000$ as spear part. Opel sell it for 3000$....
Now anbout your Wifi... sure you can build up on any kind of solution on the market, crypting as much as you like. My question is: Do you really need it? To do what?
There's not PC inside... No special data, no OS.. The only thing you could get is binary data. Do you think that it sould be encrypted? I don't think so...
Falcom XF55-AVL is a nice solution! I agree with that, but 40% more expensive then what we use. Beside that one, you need to put other parts that will cost you $$$. Do not forget about writing some software for it.  )) I bet you know how much cost those tools..
Do you need a 200$ AVL solution?? With GPRS, Wifi ?? I don't think you are going to find it. All solutions (brand name) I know , at this quality high-tech level, are over 1500EUR. There are cheaper sollutions.. oldies but goldies.. )
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aNdreiBuuu
Joined: 30 Apr 2001
Posts: 394
Helped: 11
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| 25 Jan 2005 1:04 Re: New GPS/GSM/GPRS tracking device |
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Dear m0nk,
| Quote: |
| Falcom XF55-AVL is a nice solution! I agree with that, but 40% more expensive then what we use. Beside that one, you need to put other parts that will cost you $$$. Do not forget about writing some software for it. )) I bet you know how much cost those tools.. |
"eCos is an open source, royalty-free, real-time operating system intended for embedded applications. The highly configurable nature of eCos allows the operating system to be customised to precise application requirements, delivering the best possible run-time performance and an optimised hardware resource footprint. A thriving net community has grown up around the operating system ensuring on-going technical innovation and wide platform support...."
http://sources.redhat.com/ecos/
| Quote: |
| Regarding your theory about acceleration determination you are 100% right, but that's pure theory. Did you ever see the airbag's electronics??? I bet you didn't. Over there you get exactly what we did but with a piezo sensor. Builting up our solution I had a consultant from Safety Components. Those are airbag producers working for Porche, Audi, GMC ... In practice it looks more simple. It is enough to determine the shock peak in a certain time interval! If you expect to see a fuzzy in a car...you can forget about it! The airbag system is independend from the onboad computer on over 80% of cars on the market. The production costs are less then 100EUR/ system. For sure you will buy it for over 1000$ as spear part. Opel sell it for 3000$.... |
Siemens has an entire team which are developing Airbags sistems...
...fuzzy logic? see this:
http://www.geocities.com/isusnea/fuzzy.html (on 8 bit microcontroller)
...and is not needed a "PC in the car" to implement WiFI
Hope this help,
//a
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m0nk
Joined: 18 Jan 2005
Posts: 14
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| 25 Jan 2005 11:28 Re: New GPS/GSM/GPRS tracking device |
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eCos is ok... I worked with opie and openzaurus.. Similar OS. It was cool to install a Mysql and Apache on it. There is only a big problem over there - product development time and production costs, resulting in a higher end-user price.
Siemens could develop something like that on the newest airbags. On 3-6 years old cars you will not find something like you mentioned.
Wifi need extra power + modules. With eCos it is possible to simply add an already made wifi device.. In our case would be far more complicate and expesive $$$.
Regarding eCos.. please have a look to kernel.. it is crosscompiled with uClinux.
also other packages, and this means it doesn't support full MMU. Do you know what this means?? Higher CPU load, overloading..etc. Once you put linux into a device you start installing other ported applications because there's not other way, unless you are crazzy enough to write your own. Think twice before recommending this solution and take in cosideration the development and production costs that will be reflected in the end-user price.
So back to Wifi, we aproached the ceapest solution and remember that it is available in 300m range. The communication protocol is simple but secure. If you do not know the base address, then there's no way to access it. Beside that you need to know the way we send data. Reverse engineering is a solution to that, but will take time and the question is : how someone possibly know that on that some vehicle is equiped with our device???
So to put an end to this discusion ( why you did so ?!), the answer is simple:
We developed a cost effective sollution based on the latest specialised components,
optimising the software in ASM to perform dedicated tasks. The end-user price you can see online is droping dramatically in case of high quantity orders.
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orikfa
Joined: 15 Jan 2004
Posts: 83
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| 25 Jan 2005 13:44 Re: New GPS/GSM/GPRS tracking device |
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I meant: if the sys tracks the veicles, someone may exploit the sys and get all the tracking infos ( what veicles are tracked, where are and who are the owners )
the sys concept is really interesting
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m0nk
Joined: 18 Jan 2005
Posts: 14
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| 25 Jan 2005 15:05 Re: New GPS/GSM/GPRS tracking device |
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orikfa,
The system is secure. To receive data, the user must be authorized. It means that his phone no. must be recorded in the SIM in address book. When the client calls the GPS unit, this will return an SMS containing position and status only if that phone no is found in address book. A hacker must have a duplicated SIM.
While communicating over GPRS , the data is binar and a potential sniffer will get only junk and nothing more. He must understand that junk and decode it. This means he has to know the core of our system and how we send data over TCP/IP.
To intercept ISM a hacker must own a dongle that we produce, then he must know the base no. which is set by client or by us. Using a standard Wifi card is not enough because we use a different ISM protocol and coding and those two will not communicate and our ISM communication will be translated by a Wifi card just as noise.
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