Serial Data Logger - Metric Mind Corporation
Contents
1. s scoeoseseseesesescosceseseoeeoeoee 10 COPYRIGHT 2011 METRIC MIND CORPORATION SERIAL DATA LOGGER USER MANUAL 1 Introduction 1 1 Overview Thank you for purchasing the Metric Mind Corporation Serial Data Logger product The Data Logger works directly with the Metric Mind EVision instrumentation system to capture and store data exported from the EVision system EVision streams data out through an isolated RS 232 interface which is also used for system configuration Exported data can be captured with a portable PC however keeping the PC active while driving is often inconvenient The Data Logger solves this dilemma and also allows data to be collected during both drive quiescent and charging periods The Data Logger stores the captured data on an SD memory card which can be easily read by a PC for review and analysis The Data Logger connects to the same DB 9 connector used to configure the EVision unit The Data Logger requires two additional wires to be connected between the EVision main unit and the DB 9 connector see the Wiring section of this manual for details on those additional connections 1 2 Components The following picture shows the major components of the Data Logger unit Blue activity light Red error _ indication light lt 2 5 e SD card slot Male DB 9 connector The Data Logger male DB 9 connector connects to the EVision main2. METRIC MIND CORPORATION Serial Data Logger User Manual SERIAL DATA LOGGER USER MANUAL Document Revision History Date Revision Comments Reference Documents The following documents provide useful background and context Number Author Document Title Location 1 0 04 VT EVision Users Manual evision_manual v1 0 04 pdf COPYRIGHT 2011 METRIC MIND CORPORATION li SERIAL DATA LOGGER USER MANUAL TABLE OF CONTENTS Serial Data BogpelF iiy nail Wa Wesan Gas Waa AMAD N MARNE A be AOS i U Ser tn A RSR oe eo Se i Document Revision H StoOrIy sscseoseseosesese sese essosese se seoesosose sese sesesecoseoseseseoesecoseseee ii Reference Documents y i lt oi si ay lien aye e dek eke RENE K s k ee je a dEVO e o e K GU ke Bu oE ee eske b e EV KO bS HO be CEK OK ii 12 STA OMUCHON yi iii siye nu nn dent ane 4 1 1 Ez si Seb VI WE Eu kU HERSE e b ke EE 4 1 2 A EEP inner 0 EN ee Ee E eV SER den KES be RC ET 4 2 Connectiong the Data Logger to an EVision 5 2 1 Cable Wiring 5 2 2 Connection SEQUCNCE 5 is 55k1548y 5555 2s os 5 s ses kev s s se5e 9 sarev keske s HESE GI kO Ku He KUN e U V VE VE
3. ee 5 3 Collecting EVision Data LOS 6 3 1 Powering Up the Data Logger seems 6 3 2 Starting a New Logging Session ssscssssssssssssssssecsssssssssssessssessssscesessssesessscesessasecesseceseceases 6 3 3 Ending a Loggi Session viiscsscscccsssescssesstscscscescsnsssnceovesecsssnceastessencasstsessessensavatessosssseedshvetecvessers 6 4 Reading SD Card Log Data 7 Error si ks s ka kariye c s anaemia 8 5 1 Error States tests ek nn ekes b ke ek Sel ak Ni n a ek e ek Ue esta Re ee recense sel 8 5 2 Determining the Error Code sssseososecesesosocosesesecesooososese se sese oososeosese sese 8 5 3 Error Code LISE i ike 5ine ke Ee oea Eer eaS SeSe ay 08 H KUREK EN a V ND ee Ooa RES VEREN Oa N y ESOS 9 pecifiCdfiOTS i nand uni n E 10 6 1 Environmental Specifications ss sss sesssotesesesosesesoseseeseoeesesereseeeee 10 6 2 P w rSD ciflCa lO 4 ii ic i ki555r ksis sei ask seke rey eK ek osso caooo ostata oseo dek n V Get sees p en ns de 10 6 3 Physical Specifications i 4 5 544444455 554s55 6 se k i e e na IV S seso s sn s dek s NI G 10 6 4 Serial Data Interface Specification
4. unit to Metric Mind 17 Internal error The Data Logger internal memory is corrupt note the error code and return the unit to Metric Mind 18 Invalid firmware update file See instructions enclosed with the update file for further details 19 Internal error The Data Logger internal program is corrupt or the processor has failed note the error code and return the unit to Metric Mind 6 Specifications 6 1 Environmental Specifications Operating Environmental Parameter Min Max Altitude Sea level nominal 20 000 ft Relative Humidity mm 90 non condensing 6 2 Power Specification Operating Environmental Parameter Min Max Power consumption 0 3 W 1 0 W 50 mA 7 5 VDC 150 mA 7 5 VDC Power supply input voltage 4 5 VDC 8 VDC 6 3 Physical Specifications Dimensions 59 x 40 x 15 mm Weight 50 g 6 4 Serial Data interface Specification Signal levels RS 232C typically 7 VDC Baud rate 19 2 kbps end COPYRIGHT 2011 METRIC MIND CORPORATION 10
5. 7 32 04 Nov 13 2011 98 14 44 29 00 29 00 1 0 0 0 0 0 0 0 0 RV 17 32 04 Nov 13 2011 396 0 00 0 00 0 00 0 00 0 00 00 0 00 0 CV 17 32 04 Nov 13 2011 98 316 44 158 51 0 00 100 75 69 91 19 91 0 00 28 80 12 1V 17 32 05 Nov 13 2011 397 317 00 158 50 0 00 100 73 31 90 RV 17 32 05 Nov 13 2011 397 0 00 0 00 0 00 0 00 0 00 00 0 00 0 1V 17 32 05 Nov 13 2011 398 317 50 159 00 0 00 100 72 31 90 RV 17 32 05 Nov 13 2011 398 0 00 0 00 0 00 0 00 0 00 00 0 00 0 1V 17 32 05 Nov 13 2011 399 317 00 158 50 0 00 100 71 31 90 RV 17 32 05 Nov 13 2011 399 0 00 0 00 0 00 0 00 0 00 00 0 00 0 1V 17 32 05 Nov 13 2011 400 316 50 158 50 0 00 100 70 31 80 AV 17 32 05 Nov 13 2011 99 14 46 29 00 29 00 1 0 0 0 0 0 0 0 0 RV 17 32 05 Nov 13 2011 400 0 00 0 00 0 00 0 00 0 00 00 0 00 0 CV 17 32 05 Nov 13 2011 99 316 58 158 50 0 00 100 75 69 94 19 94 0 00 28 80 12 1V 17 32 06 Nov 13 2011 401 316 50 158 50 0 00 100 70 31 80 Consult the EVision operation section of the EVision user manual for details on decoding the EVision data stream COPYRIGHT 2011 METRIC MIND CORPORATION 7 SERIAL DATA LOGGER USER MANUAL 5 Error Conditions 5 1 Error State At the end of a normal logging session the Data Logger red light flashes slowly If an error condition is detected at any time the Data Logger red light flashes quickly See section 5 2 for instructions o
6. LOCK switch on the side of the SD card ensure that the switch is in the unlocked position 2 Disk full there is no remaining free space on the SD card This error can occur at the start of logging if the SD card is already full or if the SD card becomes full as a result of a long data logging session Remove the SD card copy the files to a PC then delete the files from the SD card and start a new logging session 3 Too many log files on SD card The data logger can create a maximum of 250 log files ona single SD card Remove the SD card copy the files to a PC then delete the files from the SD card and start a new logging session 4 Internal error the Data Logger internal program is corrupt note the error code and return the unit to Metric Mind Indicates a failed firmware update sequence 5 There is no SD card in the slot ensure that an SD card is in the slot and is fully inserted 6 SD card write error This error may occur if the SD card is removed while logging is in progress the correct procedure is to depress the pushbutton to stop logging before removing the SD card from the socket This error may occur if the SD card is faulty This error may occur is insufficient power is available to the Data Logger to support writing data to the SD card Regardless of the cause the file structure on the SD card may now be corrupt 7 The Data Logger created a new log file on the SD card but cannot open the fil
7. SERIAL DATA LOGGER USER MANUAL 3 Collecting EVision Data Logs The sections below describe the process and indications for performing a logging sequence Once the Data Logger is powered up the sequence is Depress the pushbutton to start logging Depress the pushbutton again to stop logging 3 1 Powering Up the Data Logger Power up the Data Logger by connecting it to the female DB 9 connector that is wired to the EVision unit Follow the connection sequence described in Section 2 2 When successfully powered up the blue light on the Data Logger flashes slowly and the red light is off 3 2 Starting a New Logging Session To start a new logging session e Insert an SD card into the SD card slot on the side of the Data Logger Insert the edge of the card with the gold connector pads first with the gold pads facing up Continue inserting the card until the spring loaded latch actuates to hold the card in place Note The maximum capacity SD card supported by the Data Logger is 2 GB e Depress and hold the pushbutton until the blue light stops flashing e Release the pushbutton The Data Logger is now in logging mode and will remain in logging mode as long as the EVision unit is powered EVision exports data continuously across all vehicle states so the Data Logger can collect data continuously through drive quiescent parked and charge cycles During logging the blue light on the Data Logger will flash briefly every one to two seconds as
8. data is written to the SD card 3 3 Ending a Logging Session To end a logging session e Depress the pushbutton e Release the pushbutton The blue light will stop flashing and the red light will begin flashing slowly The final logged data is written to the log file on the SD card see Section 4 for details To start another logging session power off the Data Logger by disconnecting it from the DB 9 connector and then reconnecting Follow the steps described in Section 3 2 to start data logging COPYRIGHT 2011 METRIC MIND CORPORATION 6 SERIAL DATA LOGGER USER MANUAL 4 Reading SD Card Log Data on a PC The Data Logger stores logged data into files on the SD card Each logging session produces one log file The log files are created in the root directory of the SD card The log file names are of the form EVLOGO01 TXT The log files are created in sequential order as EVLOGO01 TXT EVLOG002 TXT up to a maximum of 250 files with the last file being named EVLOG250 TXT Note The Data Logger creates files in strict sequential order If the files EVLOGO01 TXT EVLOGO02 TXT EVLOGO04 TXT already exist on the SD card the next logging session will be placed in a file named EVLOGO03 TXT To access the log files insert the SD card into a PC and copy the log file or files to the PC and then delete the log file or files from the SD card This ensures that the SD card always has the maximu
9. e Check to ensure that the SD card is fully inserted in the slot 8 Cannot open firmware update file A firmware update sequence was initiated but a corresponding firmware update file could not be found on the SD card See instructions enclosed with the update file for further details 9 The SD card cannot be initialized Try a different type or brand of SD card Ensure that the SD card meets the SD card standard specification and is affixed with the SD logo 10 The SD card was initialized but the file system on the card cannot be opened Try a different brand or type of SD card Note that the data logger supports SD card sizes up to 2 GB only 11 Unused The Data Logger internal program is corrupt note the error code and return the unit to Metric Mind 12 Internal error The Data Logger internal program is corrupt note the error code and return the unit to Metric Mind 13 Unused The Data Logger internal program is corrupt note the error code and return the unit to Metric Mind 14 Unused The Data Logger internal program is corrupt note the error code and return the unit to Metric Mind 15 Internal error The Data Logger internal program is corrupt note the error code and return the COPYRIGHT 2011 METRIC MIND CORPORATION 9 SERIAL DATA LOGGER USER MANUAL unit to Metric Mind 16 Internal error The Data Logger internal memory is corrupt note the error code and return the
10. m available space for recording new logging sessions Use care when copying the log file from the SD card to the PC to ensure that previous log files with the same name are not overwritten The recommended process is to rename the log files once they have been copied to the PC You may also need to trim the data lines near the beginning and end of the file to remove any partial lines that may have been captured Note The file date and time information for the log files is NOT set in the SD card directory Examine the data inside the log file to determine the time order based on the date and time reported within the EVision data stream A section of a sample EVision log file is shown below SRV 17 32 03 Nov 13 2011 392 0 00 0 00 0 00 0 00 0 00 00 0 00 0 CV 17 32 03 Nov 13 2011 97 316 42 158 35 0 00 100 75 69 88 19 88 0 00 28 80 12 1V 17 32 04 Nov 13 2011 393 316 00 158 50 0 00 100 70 31 80 RV 17 32 04 Nov 13 2011 393 0 00 0 00 0 00 0 00 0 00 00 0 00 0 1V 17 32 04 Nov 13 2011 394 316 00 158 50 0 00 100 70 31 80 RV 17 32 04 Nov 13 2011 394 0 00 0 00 0 00 0 00 0 00 00 0 00 0 1V 17 32 04 Nov 13 2011 395 316 50 159 00 0 00 100 77 31 80 RV 17 32 04 Nov 13 2011 395 0 00 0 00 0 00 0 00 0 00 00 0 00 0 IV 17 32 04 Nov 13 2011 396 317 00 158 50 0 00 100 75 31 90 AV 1
11. n how to determine the details of the error condition 5 2 Determining the Error Code To determine the error condition when the Data Logger red indicator light is flashing e Depress and hold the pushbutton e The red indicator light will stop flashing e The red light will flash once very quickly to indicate that the error code is about to be displayed e red light will then slowly flash to indicate the error code Count the flashes to determine the error number e After the Data Logger has completed flashing the red indicator light to indicate the error code the red light will remain off for 4 seconds As long as the pushbutton is held the error indication process will continue one quick flash followed by slow flashes to indicate the error code Consult the table in Section 5 3 to determine the nature of the error condition based on the error code The diagram below shows an example of the error code display on the red light for error code 5 Fast flashing to la Fast flashing to indicate an indicate an error has error has occurred occurred 1 quick flash to indicate that error code display follows id r MF CT CT LT CT Lh 2 second 5 flashes 4 second pause indicates error code 5 pause Pushbutton depressed and held COPYRIGHT 2011 METRIC MIND CORPORATION 8 SERIAL DATA LOGGER USER MANUAL 5 3 Error Code List Error Description Code 0 No error 1 The SD card is write protected check the
12. unit female DB 9 connector COPYRIGHT 2011 METRIC MIND CORPORATION 4 SERIAL DATA LOGGER USER MANUAL 2 Connectiong the Data Logger to an EVision System lt Female DB 9 Connector 2 1 Cable Wiring The table below shows the necessary wiring connections between the EVision 35 pin Ampseal connector and the female DB 9 connector Signal EVision Female 35 pin DB 9 Connector Connector Power OUT 25 1 Note The first three wires may already be in place if you have previously wired a DB 9 connector to the EVision unit for configuration or monitoring purposes If so those three wires can remain in place just add the last two connections to provide power from the EVision main unit to the Data Logger 2 2 Connection Sequence When connecting the Data Logger to the female DB 9 connector from the EVision unit take care to connect the ground side first pins 5 and 9 of the DB 9 connector Do this by tilting the DB 9 connector slightly so that pins 5 and 9 connect first as the connectors are mated This ensures that the Data Logger powers up correctly without affecting the current state of the EVision unit In some vehicle configurations plugging the DB 9 connectors together in a different connection order may cause the EVision unit to reset If this occurs the EVision display will go blank for a few seconds and then resume once the unit has finished the restart sequence COPYRIGHT 2011 METRIC MIND CORPORATION 5
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