自作GPSロガーのプレゼンスライドです。

1. DIY GPS logger that enjoys using mbed
TANAKA Toshihisa
@tosihisa
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2. Self Introduction
●Toshihisa Tanaka (@tosihisa)
●Osaka Prefecture Sakai City living
●Work is a Embedded programmer.
●The hobby is to make the OSM map while traveling with
the motorcycle.
●Habitat
http://twitter.com/tosihisa/
http://mbed.org/users/tosihisa/
http://www.openstreetmap.org/user/tosihisa
http://lilo.linux.or.jp/
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3. The made one...
●The GPS logger is made.
●This hits the model in the past.
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4. The made one...
● This is the latest model.
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5. This was made.
● Skytraq S1315F GPS Logger
● It used it to experiment on goGPS.
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6. Why is the GPS logger made?
I am participating in OpenStreetMap.
In OpenStreetMap, I want the GPS log that accuracy is as good as possible.
Therefore, it thinks whether to obtain the position where accuracy by postprocessing is good by
preserving raw data (raw data) of GPS.
The other...
GPS logger on the market ties and it doesn't tie an external antenna.
It wants to obtain some accuracy even when it is not possible to measure it with GPS like the
tunnel and to obtain the position that is.
The capacity of GPS logger on the market in which the log can be done is small.
Special software is necessary for taking out the log. It is general and wants the log data.
It is freedom in above all. :-)
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7. DIY GPS Logger (1G)
3 axis
USB Accelerometer 3 axis gyro
memory (under LCD) (not used)
GPS
5Hz
128x64
LCD 2 axis
compass
main
board(mbed)
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8. It actually used it.
Make: Ogaki Meeting(2010-9-25)
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9. Result
The distance from Sakai to Ogaki is a round trip and about
400Km.
Roughly 340Km was good at the log.
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10. DIY GPS Logger (1.5G)
The base substrate is changed to ☆board Orange.
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11. Specification
● Main processor - mbed NXP LPC1768
● Technical reference
This mbed Microcontroller is based on a Cortex-M3 Core running at 96MHz, with 512KB
FLASH, 64KB RAM and a load of interfaces including Ethernet, USB Device, CAN, SPI,
I2C and other I/O.
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12. Why is mbed used?
Because it is easy.
When it is usual development.
1) The development setting is installed.
2) ROM burnt wearing software is installed.
3) The debugging of the boot loader is serious. JTAG comes to want it.
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13. What is different as for mbed?
1) The boot loader has already been made.
2) Writing in ROM is "Drag & drop" and OK!!.
3) The installation of the compiler is unnecessary. Because all are Web bases.
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14. Specification
● Base board - ☆board Orange
http://kibanhonpo.shop-pro.jp/?
pid=22678532
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15. Specification
GPS Module – FV-M11 (MTK Chipset
5Hz)
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16. 5Hz GPS...?
Kinki sports land （ Motorcycle circuit place in Kyoto ）
1Hz 5Hz
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17. Specification
3 axis Accelerometer
MMA7361L -Analog Output (The noise
often gets on. )
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18. Accelerometer
野島断層保存館
震災体験館 体験コーナー加速度ログ
100
50
0
加速度 (10 ミリ g( ジー ))
14 38 62 86 110 134 158 182 206 230 254 278 302 326 350 374 398 422 446 470 494 518
2 26 50 74 98 122 146 170 194 218 242 266 290 314 338 362 386 410 434 458 482 506 加速度 (x)
加速度 (y)
加速度 (z)
-50
-100
-150
-200
時間 (100 ミリ秒 )
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19. Specification
Gyro module
AE-GYRO-SMD – two gryo sensor.
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20. Specification
Digital Compass – HMC6352
2 axsis digital compass
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21. Specification
Infrared Remote-control Receiver
Module
IRM-3638N3
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22. Thing that has been
understood
● When it is a motorcycle, the
acceleration and the gyro are difficult.
It shakes, and the noise is large.
● The motorcycle can use a digital
compass.
● It seems to be able to do the “simple
earthquake sensor” by applying the
acceleration sensor.
● Mbed is convenient. However,
anything cannot be done if there is no
net. 22

23. The future ･･･
● Main CPU(& board) change to
LPC1769-based.
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24. The future ･･･
● Main CPU(& board) change to STM32
“STBee MINI”
● Flash 128k RAM 20k cpu clock 72MHz
● 30mA
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