> One, synopsis:
GPS is the Global Positioning System first letter shrinks
slightly the word, Italy is the whole world satellite positioning
system, through the use from many satellites signal determined the
ground or the near ground any position motion receiver position,
satisfies to continuously real-time and the three dimensional
navigation urgent need. After GPS is published, namely rapidly
in the navigation, the localization domain obtains the widespread
application along with the GPS system technology unceasingly mature
and the economical development, the people to its request not only are
the localization, the dispatch, report to the police the function, but
also needs the navigation, the entertainment, multimedia and so on the
function, moreover exquisite is artistic and so on to its outward
appearance request.
Second, system demand:
The vehicle carries the system main four big demands
The monitoring - vehicles security, the vehicles
security preserve, safe driving detecting, collision detecting.
Navigation - state of roads information: Transportation
information network, electronic map, GPS.
Communication - Call Center, GPRS/GSM.
Multimedia - Audio Player, Video Player, PDA
Third, system request: :
The GPS terminal device took a mature product, itself has
following several requests:
1) stability high: The terminal device under the summer
high temperature and the winter low temperature can the long time
steady work
2) anti- 磁抗 knocking strong: The terminal
device quite is high on vehicle anti-knocking property and the
diamagnetism request, cannot therefore produces the life and death
machine phenomenon
3) volume small: In vehicle itself space small,
the terminal device should put the place which quite covert is not
easy in the vehicle to discover, occupies the space should take as be
slightly suitable.
4) ease of operation: Provides the pressed key way on the
display monitor or touches the screen way convenient driver to reply
5) operates the speed quickly: The data passes on
in the process in on which and under passes on, requests the data
processing speed to be quick
6) extension big: Along with the technical
maturity, the terminal device in does not need in the situation which
rereplaces completely the function to obtain the expansion
Fourth, the vehicle carries the GPS system overhead
construction
The present vehicle carries the GPS system terminal
usually by the GPS module, the wireless connection module, reports to
the police the control module, the pronunciation control module, the
demonstration module and the vehicle carries PC and so on several
parts to be composed:
1st, GPS module: Installs on the vehicles the small
installment, is the GPS vehicle carries the unit a part, uses for
information which receives the satellite to transmit.
2nd, wireless connection module: Usually uses the vehicle
to carry the radio telephone, the broadcasting station or the
migration data terminal (MDT) completes the information interactive
function.
3rd, reports to the police the control module: Sends out
to the monitoring center network reports to the police the signal,
notifies the vehicles unusual information.
4th, pronunciation control module: Completes function and
so on sound control and service.
5th, demonstration module: Uses for to demonstrate video
frequency pictorial information and so on position state of roads, may
select LCD, CRT or the TV demonstration.
6th, the vehicle carries PC: The conformity processes
various functions module, coordinates corresponding software,
completes assigns the function, like carries on the data processing,
calculates passes through in the position, the latitude, the
elevation, the speed and the time and so on.
As a result of the use environment particularity, carries PC as
the system core vehicle to have the volume small, integration rate
high, power loss low, handling ability strong, the operation simple is
convenient. An item front vehicle carries PC more uses to insert
the type operating system, like WINDOWS CE and inserts type LINUX and
so on. Frequency uses which according to the vehicles as well as
path complex request, it must the reliability have to be high, also
the extension and the compatibility must be good above, ?the meter
inserts the declining motherboard to be allowed better to satisfy
requests, provides the safe reliable hardware platform for Che Zaip C.
Fifth, system plan:
The vehicle carries the PC typical plan - prestige to reach the
electricity EPIC specification series motherboard
The prestige reaches the electricity NANO series
motherboard to conform to the EPIC standard, 5 greatly inserts the
type motherboard merchant union formulation by the whole world.
Its size is 115mmX165mm, is smaller than the EBX specification,
has provided EBX all functions in this specification.
1st, the NANO series motherboard provides 4 COM mouth, but
outside meets the more strings mouth equipment;
2nd, the board carries the CF/IDE connection, may meet inserts
the CF card, DOM improves the hard disk the characteristic which is
easy in the vibration to damage. At the same time, the prestige
reached the electricity the NANO series motherboard to provide
standard version WINCE.NET and WINXP Embedded, avoided customer
developing operates the platform, reduced the system integration
business system development the time;
3rd, EPIC had stipulated outside supposes the connection the
location area, all NANO motherboard outside connection position is
same, convenient system integration business chooses the different
rank along with the different application the NANO motherboard but not
to use the change engine case design;
4th, the motherboard provides PC104/PC104 the PLUS connection,
facilitates the expansion system request other functions;
5th, GPS module: Uses (vehicle which RS-232 the connection
the GPS-01 module specially designs to carry PC the GPS module);
6th, power source module: The motherboard proposes the
deposition 12V power supply function, through has used embarkation
intelligence voltage regulation chip 12V - the 12V direct current
voltage-stabilized source, even if the serious short voltage
unbalanced also can be stable in the instant, avoided because the
voltage question to affect this machine movement the extra worries.
Below completes the function:
1st, the vehicles localization, the dispatch, report to the
police function 2, the navigation function
3rd, wireless accesses the net function 4, the
entertainment function
... ...
The prestige reaches the electricity NANO series product the
main specification performance as follows:
NANO-7240 the brand-new EPIC specification, the board carries
ultra low power loss Intel Celeron the 400MHz processor, the VT8606
chip group, brings LCD/CRT the VGA demonstration connection, the
network, the audio frequency
  NANO-7240 the brand-new EPIC specification, the board
carries ultra low power loss Intel Celeron the 400MHz processor, the
CLE266 chip group, supports 36-bit LVDS/TTL LCD, the network, the
audio frequency
NANO-7270 the brand-new EPIC specification, the Socket
479 overhead constructions, support Intel Pentium outside the M
processor, 533MHz the frequency, bring LCD/CRT the demonstration
function the VGA connection, GbE, USB2.0, the audio frequency
Is suitable to video frequency gathering and so on to
the CPU request very high application. |
