Radiological node μ-GaRaMo (description and user manual)
Contents
1. m a Education and Culture DG Lifelong Learning Programme Radiological node p GaRaMo Description and user guide p GaRaMo MEIS d o o Authors Saso Vrbinc Darko Popovic Postal address MEIS d o o Smarska 40 SI 1291 Skofljica Slovenia Email info meis si Web www meis sSi June 2012 e Learning DTN E Y Education and Culture DG duc Lifelong Learning Programme EMPTY PAGE u GaRaMo Description and user guide Page 2 of 13 ITE I5 Garamo description user guide vO1 p Learning DTN Y Education and Culture DG Lifelong Learning Programme DOCUMENT Garamo description user guide_v01 doc DOCUMENT HISTORY VERSION DESCRIPTION DATE AUTHORS Creation of the document added content of 14 06 2012 Sa o Vrbinc GaRaMo device Darko Popovi u GaRaMo Description and user guide Page 3 of 13 ITE I5 Garamo description user guide vO1 e Learning DTN E Y Education and Culture DG duc Lifelong Learning Programme EMPTY PAGE u GaRaMo Description and user guide Page 4 of 13 ITE I5 Garamo description user guide vO1 p e Learning DTN Education and Culture DG Lifelong Learning Programme TABLE OF CONTENTS 1 size ee 7 1 1 POWER MANAGEMENT 5555555 inessedasumb Muni Tun Maced puras bees tie in oM NUN OU MId nd edid etu e tnb Use urnsU dvi Ue ME 8 1 1 1 Power management for radiological nod2. ECFO S5 disabled RP 5 S5 disabled pci 0000 00 1c 4 ECFO S5 disabled RPO6 S5 disabled pci 0000 00 1c 5 NIC S5 disabled pci 0000 86 00 0 USB1 3 enabled pci 0000 00 1d 0 USB2 3 enabled pci 0000 00 1d 1 USB3 3 enabled pci 0000 00 1d 2 USBA 3 enabled pci 0000 00 1a 0 USB5 3 enabled pci 0000 00 1a 1 USB6 3 enabled pci 0000 00 1a 2 U6RM S3 disabled EHC1 S3 disabled pci 0000 00 1d 7 EHC2 S3 disabled pci 0000 00 1a 7 PCIB S5 disabled pci 0000 00 1e 0 HST1 S5 disabled The list shows that the computer will wake up on every USB device attached to the computer Changing their status can be changed with the following command root garamo echo USB1 gt proc acpi sleep u GaRaMo Description and user guide Page 10 of 13 TES Garamo description user guide_v01 e Learning DTN Lifelong Learning Programme 2 User guide 2 1 Short description u GaRaMo is a device for measuring radioactivity It consist of a radiation probe embedded personal computer external power supply battery and other electronic components Everything is packed into aluminium briefcase with exception of an external power supply Figure 1 Figure 1 2 2 Device setup The briefcase should be placed in appropriate indoor location with lowest possible humidity You should avoid exposure to direct sun light since the device is very sensitive to the sun As noted the device is not suitable for outdoor placement The device is activated
3. has been used as replacement of It is an open source electronics prototyping platform based on flexible easy to use hardware and software It was needed for new advanced controller because previously used timer had limited number of ON OFF time intervals and it oscilated when the power supply dropped under 11 5V It is developed for all kind of nodes Intel Embedded computers embedded routers and programmable and configurable over RS232 or USB no need for special driver development platform independed for Windows and Linux available It has very low power consumption approx 10 mW Wake up with USB device As noted before wakeup can be initiated over any hardware component supported by the ACPI On regular computer or a laptop for example power button is configured to wake up the machine from sleep by default but support for other devices requires additional configuration Every ACPI compliant device has a wakeup status flag enabled disabled The following command prints all devices and their status for ACPI sleep activity u GaRaMo Description and user guide Page 9 of 13 ITE 5 Garamo description user guide vO1 p e Learning DTN Eg il Education and Culture DG Lifelong Learning Programme n4c garamo gt cat proc sleep Device S state Status Sysfs node LANC S5 disabled HDEF S4 disabled pci 0000 00 1b 0 RP 2 S5 disabled pci 0000 00 1c 1 WNIC S5 disabled pci 0000 03 00 0 RP 3 S5 disabled pci 0000 00 1c 2
4. es eese eene 2 USER GUIDE 11 21 ORT TES CRIP TON onera irane aE E AAEE E EE 1 Aa ize cr E TU T 1 2508 7 00127 AMON C 12 24 USB KEY DATA TRANSFER coscesssdewessenherececedoenboseduevegadenaetebeaeneselenndndeieuseadadeqnctaniecieacedacsueaeiouaee 12 De WRONG ct 13 u GaRaMo Description and user guide Page 5 of 13 ITE I5 Garamo description user guide vO1 e Learning DTN E Y Education and Culture DG duc Lifelong Learning Programme EMPTY PAGE u GaRaMo Description and user guide Page 6 of 13 ITE I5 Garamo description user guide vO1 e Learning DTN 1 Description u GaRaMo consists of a probe embedded computer battery USB connector and power supply The embedded computer has following specs e Intel D945GCLF2D mini ITX Motherboard integrated Intel Atom 330 2x 1 6Ghz e 4x USB 2 0 e VGA Serial and Parallel e 1024MB DDR2 667 RAM e 2 5 40GB SATA HDD Radiological data are collected from the probe every half an hour using gamma radiation measuring device The acquisition takes approximately 10 seconds afterwards the computer becomes idle Therefore ACPI Advanced Configuration and Power Interface has to be configured to sleep suspend the computer and wakeup on every half an hour with help of an external timer in order to conserve
5. every half an hour when specific sound is produced This might be irritating and therefore the setup of the device in places such as living room or bedroom is not advisable It s recommended to run the device on power supply constantly since the battery ensures only 40 hour autonomy Otherwise If constant power supply is not available you have to recharge the battery on every 24 hours and wait approximately 2 hours to fully recharge u GaRaMo Description and user guide Page 11 of 13 TES Garamo description user guide_v01 e Learning DTN E M i Education and Culture DG Lifelong Learning Programme 2 3 Basic operation The device operation is completely automatic and therefore no manual switching of power on off is required Connect the power supply to AC power outlet 230V afterwards attach the circular plug on the other side of the device the plug is located on the briefcase Figure 2 From this point the device operation is automatic ON UN DN D cam ana ano IS OWS ee ee en Cnet Cae Cee ee Cee ee PES SDA OW We uh um ur sou uto So Se So eU f LE D b L A s D e LJ L LJ LJ LCS D D DUE a Du D gt Ld e g Se D L RS a a P gt a PA is AN 3 SOO ic NES Ln gt 2 sO 1 ad Cale s mM a gt aiye MOON AN gt S p 3 O Figure 2 2 4 USB Key Data Transfer Use an appropriate USB key for successful data transfer The procedure is as f
6. lugged unplugged When such event occurs the host wakes up and resumes the processes Test bed specification assumes two events that can wake up the computer e Automatic wakeup sleep invoked by external timer connected to the serial port only pin 9 is relevant e USB key wakeup sleep when inserted removed Wakeup is regularly invoked by external timer on every half an hour to acquire radiological data from the probe The data acquisition takes approximately 10 seconds afterwards the computer suspends if no other task is active such as USB key data transfer otherwise suspend is held off until all tasks are finished Wakeup can also be initiated with USB key or any other USB device When oymbioNode is attached to the computer wake up from suspend will be initiated As long as the key is present the task is active and suspend is held off opecial case of operation is when both tasks are active To handle the concurrent tasks an additional program was developed that monitors activity and controls the suspension As previously described as long at least one task is active the suspend procedure will not be invoked Both radiological data acquisition and running PLUTI tasks needs to use this program in order to prevent suspend 1 1 1 Power management for radiological nodes For the outdoor devices based on Intel Atom platform the power management scheme that is presented on Figure 2 has been developed and used u GaRaMo Descriptio
7. n and user guide Page 8 of 13 ITE I5 Garamo description user guide_v01 e Learning DTN Intel Atom ITX board D945GCLF2D S o0 c de oS D Of oOo on i ro Figure 2 Diagram of power supply wiring Power supply of this kind of nodes is usually based on solar panel or AC DC adapter where standard 220V power lines are available This power is distributed to the PICO UPS uninterruptible power supply unit 10 This unit redirects power according to current conditions If power from solar panel or AC DC adapter is available then the power is supplied to embedded computer and the 12V battery is being charged if necessary When the main input power fails the power is supplied to embedded computer from the battery until it is not drained or power is restored Power from UPS is distributed also to the programmable timer that drives the ignition input of the PICO PSU M3 ATX power supply has three inputs ground 12V and ignition and ATX output When the ignition is turned on 12V the power supply activates power on ATX connector When the ignition is turned off OV the power supply waits for 1 minute and then turns off power on ATX connector For signalization of power loss a special signal from PICO PSU M3 ATX unit is used One minute before the power will be cut off the operating system is signalled through common power on off signal line of the motherboard Arduino p Controller for advanced power management control
8. ollows 1 Insert the key in the USB slot attached to the cable Figure 3 Afterwards the computer will wakeup and start with automatic data transfer TRR EN vC i gt m a A e 3 Figure 3 2 Wait for at least six minutes before you remove the key Therefore you assure successful data transfer and device stability u GaRaMo Description and user guide Page 12 of 13 ITE I5 Garamo description user guide vO1 e Learning DTN 3 After fix minutes you can safely remove the key 2 5 Troubleshooting If the device is not responding on USB key insertion you need to reinsert it If the trouble persist make sure the device is connected to the external power supply power supply connected on 230V and correctly plugged in Another possible reason for misoperation is depleted or discharged battery In this case the following procedure should be taken 1 Open the briefcase 2 Unplug the wire or clamp on the battery Figure 4 E Figure 4 3 Connect the device to power supply Figure 2 4 Attach the wire back to its place where it was unplugged 5 Close the briefcase u GaRaMo Description and user guide Page 13 of 13 ITE I5 Garamo description user guide vO1
9. power which is especially significant when running on battery Some reconsideration have been made regarding to put the computer in hibernation but then the ability to wakeup the computer with USB key is lost I GaRaMo PORTABLE GAMMA DOSE RATE MONTTOR Figure 1 u GaRaMo u GaRaMo Description and user guide Page of 13 Garamo description user guide vO1 e Learning DTN 1 1 Power management One of the crucial problems in the development process was to find optimal solutions for power management The power should be conserved while the test bed runs on battery This is necessary feature of u garamo that gives users freedom of choosing test bed location The outdoor locations are typical example where often no power supply is available Power consumption can be significantly reduced with the power management described in previous section The external timer can be connected directly to AC DC to boot the computer but in the testbed we wanted to simplify the usage of SymbioNode and therefore we used slightly different configuration Linux supports wakeup over almost any ACPI compliant HW interface such as USB CF ethernet or serial port This enables additional automation of data transfer between the host and SymbioNode In order to wakeup the computer the host needs to be in sleep power state In such state the host hardware is held under low voltage which is enough for host to detect external devices p
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