POIS: a POsition and Inclination

Transcription

1 POIS: a POsition and Inclination Sensor for the monitoring i of slopes and structures Giuseppe Artese Civil Engineering Dept. University of Calabria PROGETTO PON01_01503 SISTEMI INTEGRATI PER IL MONITORAGGIO, L EARLY WARNING E LA MITIGAZIONE DEL RISCHIO IDROGEOLOGICO LUNGO LE GRANDI VIE DI COMUNICAZIONE

2 The instrument consists of four subsystems: Inclination measurement system GNSS receiver for positioning Data processing systemstem Data transmission system a Frame Pole (ground) Cantilever (structures without GNSS)

3 Inclination measurement system: Two spirit levels (selectable accuracy) Digital gta Camera a

4 Positioning System: GNSS receivers Ublox NEO-6M Ublox NEO-6P

5 Mini Computer: Raspberry Pi B 512 MB

6 Transceiver Features: 215mA 250kbps Max data rate 60mW output (+18dBm) 1 mile (1500m) range Built-in i antenna Fully FCC certified 610bit 10-bit ADC input pins 8 digital IO pins 128-bit encryption Local or over-air configuration AT or API command set

7 Frame Characteristics: Light Robust Simple to realize Easy to install

8 Camera Calibration

9 LED lighting

10 Measurement of inclination Precision with a 60 vial dag

11 Spiric ii Section (Spiric i of Perseus) (x 2 +y 2 ) 2 + ax 2 + by 2 + cx + dy + e = 0

12 Best fitting curve

13 Calibration

14 Raspberry Pi B 512 MB

15 Raspberry Pi Model A Model B SoC: [1] Broadcom BCM2835 (CPU + GPU + DSP + SDRAM) [2] CPU: 700 MHz ARM1176JZF-S core (famiglia ARM11)[2] GPU: Broadcom VideoCore IV,[37] ] OpenGL ES 2.0, 1080p30 H.264 high-profile decode[2] [ ] Memory (SDRAM): 256 Megabytes (condivisa con la GPU) 256 o 512 Megabytes (condivisa con la GPU) USB 2.0 ports:[8] 1 2 (attraverso un hub USB integrato)[35] Output video:[1] Connettore RCA per il video composito, HDMI Output audio:[1] 3,5 mm jack, HDMI Memoria:[8] SD / MMC / SDIO card slot Collegamenti di rete:[1][8] Nessuno Ethernet 10/100 (RJ 45)[35] Periferiche di basso livello: 2x13 header pins for GPIO, SPI, I²C, UART, +3,3 Volt, +5 Volt[37][38] Real time clock:[1] No clock or battery Corrente (potenza) assorbita[39]: 300 ma, (1,5 W) 700 ma, (3,5 W) Alimentazione:[1] 5 V via MicroUSB o GPIO header Dimensioni: 85,60 mm 53,98 mm[40] (3.370 inch inch) Sistemi operativi supportati: Sistemi operativi non supportati: Debian GNU/Linux, Fedora, Arch Linux[3] e Gentoo[41] RISC OS[9] (shared source)

16 Positioning System: Ublox NEO-6M Ublox NEO-6P

17 Differential position: just the network geometry

18 The coordinator node computes the baselines

19 The variations of the baselines indicate morphologic changes

20 Metal Plate Holed and Folded

21 Assembling of the components

22

23 BOX IP 55

24 First Tests

25

26

27

28

29 After the centering of the bubbles

30

31 Fist data sent to the CAED

32 1% Inspiration 99% Perspiration

33 Geological and Hydraulic Safety along Motorways and Railways University of Calabria Rende 25th 26th November 2014 POIS: a POsition and Inclination Sensor for the monitoring of slopes and structures - Giuseppe Artese

34 Geological and Hydraulic Safety along Motorways and Railways University of Calabria Rende 25th 26th November 2014 Thanks to: Michele Perrelli Andrea Torchia Francesco De Rose Natale Brogno POIS: a POsition and Inclination Sensor for the monitoring of slopes and structures - Giuseppe Artese