Solving for diastolic and systolic blood pressure
Hi everyone,
I am in desperate need of help undering labview
I created a VI where you can read pressure vs. voltage but I need to solve for systolic and diastolic pressure
I am using a pressor sensor
I need help understanding how to find the x values (time) and then find the corresponding y values (pressure)
I have attached a picture of my VI and what is going into the filter is just the signal from the DAQ assistant
also ps I am so confused about this live reading, is it possible for me analyze an array (the graph data) afterwards
Attachments:
20140421_145343.jpg 2484 KB
20140421_152544.jpg 1292 KB
Hi julka41,
If you already have the best fit line, doing the subtraction should not be very difficult. I'm guessing that x represents time, so you can calculate the y value for each point in time that you need to subtract. You should be able to obtain the time information out of the dynamic data type from the DAQ Assistant and piece it back together. Please see this help document for more information on working with dynamic data. If you don't have the best fit line, you'll need to isolate the portion of the signal of interest and use one of the curve fitting VIs in LabVIEW to obtain the best fit line.
Best Regards,
Matthew B.
Applications Engineer
National Instruments
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Ok first of all here's my setup:
fakeraid (dmraid) / and home on an OCZ Revodrive
boot with GRUB on a flash drive (since fakeraid doesn't support grub)
var and downloads/media folder on a 500GB WD Caviar drive
When I originally installed Arch I had the Caviar drive in my home server in a RAID5 array, so that's why I opted to install boot and grub on a flash drive simply for booting. Now that I have the drive in my desktop I've cloned the flash drive's partitions and MBR using dd:
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Last edited by DarksideEE7 (2011-02-13 23:25:31)Sorry, I forgot to mention that I tried to install GRUB from the GRUB shell in a live Arch USB. It failed on a few non-critical parts, and succeeded on the last part. I'm going to try again shortly, possibly I did something wrong. GRUB is able to find the stage files using:
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grub>find /grub/stage1
grub> find /grub/stage1
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(hd5,0)
grub>
(hd0,0) is the desired boot drive, while (hd5,0) is the current bootable flash drive with /boot and GRUB installed.
Here is the output of fdisk -l:
WARNING: GPT (GUID Partition Table) detected on '/dev/sde'! The util fdisk doesn't support GPT. Use GNU Parted.
Disk /dev/sde: 2000.4 GB, 2000398934016 bytes
256 heads, 63 sectors/track, 242251 cylinders, total 3907029168 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000
Device Boot Start End Blocks Id System
/dev/sde1 1 3907029167 1953514583+ ee GPT
Disk /dev/sdb: 60.0 GB, 60022480896 bytes
255 heads, 63 sectors/track, 7297 cylinders, total 117231408 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0xedb72db9
Device Boot Start End Blocks Id System
/dev/sdb1 * 2048 206847 102400 7 HPFS/NTFS
/dev/sdb2 206848 117227519 58510336 7 HPFS/NTFS
Disk /dev/sdd: 40.0 GB, 40018599936 bytes
255 heads, 63 sectors/track, 4865 cylinders, total 78161328 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000
Disk /dev/sdd doesn't contain a valid partition table
Disk /dev/sdc: 40.0 GB, 40018599936 bytes
32 heads, 32 sectors/track, 76329 cylinders, total 78161328 sectors
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Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0xb8372fcd
Device Boot Start End Blocks Id System
/dev/sdc1 32 21484543 10742256 83 Linux
/dev/sdc2 21484544 156317695 67416576 83 Linux
Disk /dev/sda: 500.1 GB, 500107862016 bytes
255 heads, 63 sectors/track, 60801 cylinders, total 976773168 sectors
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Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x8497e059
Device Boot Start End Blocks Id System
/dev/sda1 * 2048 206847 102400 83 Linux
/dev/sda2 206848 42149887 20971520 83 Linux
/dev/sda3 42149888 976773167 467311640 83 Linux
Disk /dev/dm-0: 80.0 GB, 80035053568 bytes
32 heads, 32 sectors/track, 152654 cylinders, total 156318464 sectors
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Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 65536 bytes / 131072 bytes
Disk identifier: 0xb8372fcd
Device Boot Start End Blocks Id System
/dev/dm-0p1 32 21484543 10742256 83 Linux
Partition 1 does not start on physical sector boundary.
/dev/dm-0p2 21484544 156317695 67416576 83 Linux
Disk /dev/dm-1: 11.0 GB, 11000070144 bytes
255 heads, 63 sectors/track, 1337 cylinders, total 21484512 sectors
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Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 65536 bytes / 131072 bytes
Alignment offset: 49152 bytes
Disk identifier: 0x00000000
Disk /dev/dm-1 doesn't contain a valid partition table
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255 heads, 63 sectors/track, 8392 cylinders, total 134833152 sectors
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Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 65536 bytes / 131072 bytes
Disk identifier: 0x00000000
Disk /dev/dm-2 doesn't contain a valid partition table
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249 heads, 62 sectors/track, 1023 cylinders, total 15794176 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x8497e059
Device Boot Start End Blocks Id System
/dev/sdf1 * 62 200693 100316 83 Linux
/dev/sdf2 200694 15794175 7796741 83 Linux
I'm using dmraid, so just to be clear I've configured the raid using:
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Then I saw the array stored in /dev/mapper/silXXXXX. I then created partitions for /boot, /, and home. At that time I was hoping to get GRUB working with the AUR package grub2-dmraid. I wasn't able to get it working for some time, so I just went ahead and installed boot and GRUB to a separate USB flash drive.
Here is the output of df -h:
Filesystem Size Used Avail Use% Mounted on
udev 10M 268K 9.8M 3% /dev
/dev/mapper/sil_bgbgdjaddicbp1
11G 5.3G 4.3G 56% /
shm 6.0G 584K 6.0G 1% /dev/shm
/dev/mapper/sil_bgbgdjaddicbp2
64G 38G 23G 63% /home
/dev/sda1 95M 16M 75M 18% /boot
/dev/sda2 19G 142M 19G 1% /var
/dev/sda3 439G 148G 269G 36% /home/l33/Torrents
none 1000M 132K 1000M 1% /tmp
shm 6.0G 584K 6.0G 1% /dev/shm
/dev/sde1 1.8T 1.1T 665G 62% /mnt/Green
and cat /etc/mtab
proc /proc proc rw,nosuid,nodev,noexec,relatime
sys /sys sysfs rw,nosuid,nodev,noexec,relatime
udev /dev devtmpfs rw,nosuid,relatime,size=10240k,nr_inodes=1022975,mode=755
/dev/mapper/sil_bgbgdjaddicbp1 / ext4 rw,noatime,barrier=1,stripe=32,data=ordered
devpts /dev/pts devpts rw 0 0
shm /dev/shm tmpfs rw,nosuid,nodev 0 0
/dev/mapper/sil_bgbgdjaddicbp2 /home ext4 rw,noatime 0 0
/dev/sda1 /boot ext2 rw 0 0
/dev/sda2 /var reiserfs rw,noatime 0 0
/dev/sda3 /home/l33/Torrents ext4 rw,noatime 0 0
none /tmp tmpfs rw,nosuid,nodev,noatime,size=1000M,mode=1777 0 0
shm /dev/shm tmpfs rw,nosuid,nodev,size=6G 0 0
rpc_pipefs /var/lib/nfs/rpc_pipefs rpc_pipefs rw 0 0
nfsd /proc/fs/nfsd nfsd rw,noexec,nosuid,nodev 0 0
/dev/sde1 /mnt/Green ext4 rw 0 0
Also I don't have a /proc/mdstat. That's only for mdadm RAID setups, right? It's been quite some time since I've used mdadm so I can't remember.
EDIT:
So I booted into a live Arch USB and entered the grub shell. I ran:
#grub
grub> root (hd3,0)
Filesystem type is ext2fs, partition type 0x83
grub> setup (hd3)
Checking if "/boot/grub/stage1" exists.....no
Checking if "/grub/stage1 exists.......yes
Checking if "/grub/stage2 exists.......yes
Checking if "/grub/e2fs_stage1_5 exists....yes
Running "embed /grub/e2fs_stage1_5 (hd3)".....25 sectors are embedded.
succeeded
Running "install /grub/stage1 (hd3) (hd3))1+25 p (hd3,0)/grub/stage2 /grub/menu.lst".......succeeded
Done.
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