发信人: kknd23 (好好学习), 信区: DC
标 题: Re: 挑战杯土木&建管系参赛作品简介(1)--GPS车辆调度?
发信站: BBS 水木清华站 (Fri Apr 26 16:25:27 2002)
o, I am the main writer of this system, then let me answer your
questions.
First, please do not say it is a junk, hehe, in fact, it works
very well now, and it helps a company in this area to gain money.
About the wireless communication, it is using SMS(short message sending)
to communicate GPS data. GSM modula also can work for talking tools,
so the vehicles can talk to each other and to the control center
at any time.
As the GSM network bestrows the most area of our country, the system
also aims at the attemper system in big area. As so, the GPS devices
in the vehicles send the GPS data per 30 mins, and it is enough for
vehicles in big area.
The data server in control center is not a PC, hehe, as you said,
PC can not burden it. It is a workstation with a special data line
communicated with GSM database. What on PC's with Microsoft
Windows OS' is just a client with map of China.
The system now can handle about 500 vehicles, if necessary,
it can handle more by adding equipments.
Ok, that's all. BTW: we can have a discussion on it front to front
if you wish, then I can learn more about this area from you.
Thanks for your words to my system.
【 在 qyjohn (Sweet Potato -- 爱你,咪咪) 的大作中提到: 】
: This is a junk if you can't put it into a handheld unit (an embedded
: system). A lot of people do it on PC's with Microsoft Windows OS's,
: which is unrealistic for vehicles.
: What is your wireless communication device? What is the operating
: distance, data rate, and is it a multi-plexing device? How many
: vehicles can you actually handle simultaneously? Can these vehicles
: talk to each other during missions?
: BTW: I am currently working in the area of guidance, navigation and
: control, which has a lot of things in common with you guys.
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※ 来源:·BBS 水木清华站 bbs.edu.cn·[FROM: 166.111.44.56]
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