brmlab project:medlab

Tesla EKG

Anonymous (anonymous@undisclosed.example.com) — 2015-11-11T00:13:38+00:00

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	+	====== Tesla EKG ======

	+	Tesla EKG is legacy piece of medical hw made in Czechoslovakia. On one side is connected to the subject via DIN5 port, on the other side sits Arduino mini which is used to emulate classic RS232 over USB for easy data dumping.
	+
	+	Signal is tranmitted realtime as unsigned short integer.
	+
	+	=== Arduino firmware ===
	+
	+	<code c>
	+	#include <avr/sleep.h>
	+	#include <avr/power.h>
	+
	+	int sensorPin = A0;
	+	int sensorValue = 0;
	+
	+	ISR(TIMER1_OVF_vect)
	+	{
	+	sensorValue = analogRead(sensorPin);
	+	Serial.println(sensorValue,DEC);
	+
	+	TCNT1=65535-2500;
	+	}
	+
	+	// the setup routine runs once when you press reset:
	+	void setup() {
	+	Serial.begin(38400);
	+
	+	/* Normal timer operation.*/
	+	TCCR1A = 0x00;
	+
	+	// timer counter
	+	TCNT1=65000;
	+
	+	// prescaler
	+	TCCR1B = 0x03;
	+
	+	/* Enable the timer overlow interrupt. */
	+	TIMSK1=0x01;
	+
	+	power_spi_disable();
	+	power_twi_disable();
	+	}
	+
	+	// the loop routine runs over and over again forever:
	+	void loop() {
	+
	+	delay(1000); // wait for a second
	+	}
	+	</code>
	+
	+	=== Computer dumper ===
	+
	+	== Python with fancy GUI ==
	+
	+	<code python>
	+	#!/usr/bin/python3
	+	import pygame
	+	import random
	+	import time
	+	import serial
	+	import sys
	+
	+	SCREENSIZE = XSIZE, YSIZE = (1360, 514)
	+
	+	screen = pygame.display.set_mode(SCREENSIZE)
	+	x = 4
	+
	+	# background color
	+	bg = (200,200,200)
	+
	+	# line color
	+	fg = (0,0,0)
	+	screen.fill(bg)
	+
	+	ser = serial.Serial(port="/dev/ttyUSB0", baudrate=38400, timeout=1)
	+
	+	yprev=0
	+
	+	# grid color
	+	gc = (150, 150, 150)
	+
	+	def grid(x):
	+	''' Draw horizontal grid '''
	+	for i in range(1,500,50):
	+	pygame.draw.line(screen, gc, (x, i), (x,i))
	+
	+	from datetime import datetime
	+	from time import gmtime, strftime
	+
	+	wow=datetime.now().strftime("%Y-%m-%d-%H%M%S")
	+	l=open("./gsr-%s.txt"%(wow), "a")
	+
	+
	+	while True:
	+	line = ser.readline()
	+	s = line.decode("utf-8", 'ignore')
	+	wow=datetime.now().strftime("%Y-%m-%d-%H:%M:%S")
	+	s = wow + " " + s
	+	sys.stdout.write(s)
	+
	+	l.write(s)
	+	x = (x+1)%(XSIZE-2)
	+	try:
	+	y = int(line)/2
	+	except:
	+	y=0
	+
	+	y = YSIZE-y
	+
	+	# remove previous data
	+	pygame.draw.line(screen, bg, (x, 0), (x,YSIZE))
	+	# draw red line
	+	pygame.draw.line(screen, (255,0,0), (x+1, 0), (x+1,YSIZE))
	+	# draw grid
	+	grid(x)
	+	# draw data
	+	pygame.draw.line(screen, fg, (x, y), (x,yprev))
	+	yprev=y
	+	pygame.display.update()
	+
	+	</code>
	+
	+	== Command line dumper ==
	+
	+	Use minicom to dump the stream for future use (gnuplot, statistics, etc). Use combo "CTRL+A ... q ... ENTER" to end dumping.
	+
	+	<code bash>
	+	minicom -b 38400 -8 -d /dev/ttyUSBx --capturefile=/dumped/file
	+	</code>
	+
	+	====== Helige EKG ======
	+
	+	Modern (90's) EKG/respiration/whatever box with more precise measurements and nicer GUI but without documentation (there is RS232 with some proprietary crippled protocol), thus we lack the possibility to dump and analyze the data.

Arduino GSR

Anonymous (anonymous@undisclosed.example.com) — 2015-03-30T17:08:39+00:00

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	+	~~NOTOC~~

	+	====== Arduino GSR ======
	+
	+	[[https://en.wikipedia.org/wiki/Galvanic_skin_response\|Galvanic skin response]] with only two external parts.
	+
	+	{{ :project:medlab:gsr.png?700 \|}}
	+	x-axis: time, 10px/s; y-axis: conductance, no units
	+
	+	===== Schematics =====
	+
	+	Adjustable current (~5μA) is passed through the subject and the voltage drop is read with AtMega ADC (as we have not found any other ADC). The ADC reference level is set by the second potentiometer.
	+
	+	{{ :project:medlab:gsr-sch.png \|}}
	+
	+	Adding capacitors to AREF and ADC (A0) improves stability. We recommend something like 47 μF to AREF and 2.2 μF to ADC.
	+	===== Electrodes =====
	+
	+	Electrodes are placed on two fingers of the same hand.
	+
	+	Using pieces of PCB (or other metal) as electrodes is really prone to motion and galvanic artifacts. Using 4x4cm TENS gel electrodes gives clean signal with no motion artifacts. The electrode is rolled around the finger and secured by [[https://en.wikipedia.org/wiki/Rubber_band\|rubber band]].
	+
	+	{{ :project:medlab:gsr.jpg?200 \|}}
	+	===== Usage =====
	+
	+	- Set OFFSET to maximum resistance
	+	- Connect electrodes
	+	- Adjust REF to get the signal approximately to the middle of the scope
	+	- If this is impossible or the signal is very noisy, decrease resistance of REF
	+
	+	===== Source =====
	+
	+
	+
	+	<code c>
	+	int sensorPin = A0;
	+	int sensorValue = 0;
	+
	+	void setup() {
	+	Serial.begin(9600);
	+	analogReference(EXTERNAL);
	+	}
	+
	+	void loop() {
	+	sensorValue = analogRead(sensorPin);
	+	Serial.println(sensorValue,DEC);
	+	delay(100);
	+	}
	+	</code>
	+
	+	<code python>
	+	#!/usr/bin/python3
	+	import pygame
	+	import random
	+	import time
	+	import serial
	+	import sys
	+
	+	SCREENSIZE = XSIZE, YSIZE = (1350, 514)
	+
	+	screen = pygame.display.set_mode(SCREENSIZE)
	+	x = 4
	+
	+	# background color
	+	bg = (200,200,200)
	+
	+	# line color
	+	fg = (0,0,0)
	+	screen.fill(bg)
	+
	+	ser = serial.Serial(port="/dev/ttyUSB0", baudrate=9600, timeout=1)
	+
	+	yprev=0
	+
	+	# grid color
	+	gc = (150, 150, 150)
	+
	+	def grid(x):
	+	''' Draw horizontal grid '''
	+	for i in range(1,500,50):
	+	pygame.draw.line(screen, gc, (x, i), (x,i))
	+
	+	from datetime import datetime
	+	from time import gmtime, strftime
	+
	+	wow=datetime.now().strftime("%Y-%m-%d-%H%M%S")
	+	l=open("./gsr-%s.txt"%(wow), "a")
	+
	+
	+	while True:
	+	line = ser.readline()
	+	sys.stdout.write(line.decode("utf-8"))
	+	l.write(line.decode("utf-8"))
	+	x = (x+1)%(XSIZE-2)
	+	try:
	+	y = int(line)/2
	+	except:
	+	y=0
	+
	+	# remove previous data
	+	pygame.draw.line(screen, bg, (x, 0), (x,YSIZE))
	+	# draw red line
	+	pygame.draw.line(screen, (255,0,0), (x+1, 0), (x+1,YSIZE))
	+	# draw grid
	+	grid(x)
	+	# draw data
	+	pygame.draw.line(screen, fg, (x, y), (x,yprev))
	+	yprev=y
	+	pygame.display.update()
	+
	+
	+	</code>

Kilovoltík

Anonymous (anonymous@undisclosed.example.com) — 2016-05-26T01:08:22+00:00

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	+	====== Kilovoltík ======

	+	Kilovoltik is semi-professional muscle stimulator which is using the nerves as part of an electric circuit.
	+
	+	The device operates at 24V with user controllable current in range <0-45> mA. The user can select either AC or DC; both modes have multiple signal profiles and adjustable frequency.
	+
	+	The device has built-in battery and can't operate while charging - there is only one (overloaded) connector both for electrodes (to be placed on the subject) and the power cable.
	+
	+	=== General safety precautions ===
	+
	+	* Do not run the current across the chest, for example connecting one electrode to the left arm and the other to the right arm or an arm and a leg is not a good idea.
	+	* All modes that are depicted with a non-zero DC component (i.e. all modes except "TENS" and "IF") really have a non-zero DC component. This may cause electrolysis and other nasty things -- do not use it unless you know what you are doing. The "TENS" and "IF" modes should be safe.
	+
	+	=== Principles of Operation ===
	+
	+	- Prerun check:
	+	* Batteries: As battery charged (see the LED)? If not, charge before use.
	+	- Disconnect power cable
	+	- Connect electrodes to the subject:
	+	* One electrode under an joint (pod kloubem)
	+	* Second over the same joint (nad kloubem)
	+	* Connect the cable to the machine
	+	- Power ON:
	+	* Switch it on (back plane)
	+	- Setup:
	+	* Select wave profile (most left group)
	+	- Check the "Error" diode NOT to shine
	+	- For newbies, the TENS(n) is good 1st choise
	+	* Select the frequency (center; if applicable)
	+	- How often the pulse should go (Hz)
	+	* Select wave length (right, if applicable)
	+	- How long the wave should be (obviously this mutiplied by grequency can't be > 1s)
	+	* If the Error LED is shining:
	+	- Check if the subject is corectly connected
	+	- Especially girl's skin have higher resistance due to usage of makeups, you can clean them using pure ethanol (flask on the shelf with "Etoh" label)
	+	- Switch electrodes (or use "crocodiles" for better attachment to the skin)
	+	- Operation:
	+	* Use "+" and "-" controls next to the right display to increase/decrease current intensity (step 1 mA)
	+	<note tip> Use "STOP" button under the current controls to quickly nullify the current.</note>
	+	<note warning> Do NOT raise the current over 35 mA for long time, it can harm the nerves. Do NOT go over 42 mA even for short time on small muscles, over short time on big ones.</note>
	+	- Power OFF:
	+	* Set the current to zero
	+	* Disconnect the subject
	+	* Connect another subject (optional)
	+	* Switch off the device (back panel)
	+	* Connect the power cable
	+
	+	<note tip> Its OK, you can breathe</note>

Krabička

Anonymous (anonymous@undisclosed.example.com) — 2017-12-28T05:14:53+00:00

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	//Krabička// je implantovatelné zařízení velikosti větší krabičky od zápalek. Obsahuje mimo jiné infuzní pumpu, připojuje se na několik nervů a pár dalších míst (viz text) a komunikuje pomocí Bluetooth 4 LE. Plní několik základních funkcí:		//Krabička// je implantovatelné zařízení velikosti větší krabičky od zápalek. Obsahuje mimo jiné infuzní pumpu, připojuje se na několik nervů a pár dalších míst (viz text) a komunikuje pomocí Bluetooth 4 LE. Plní několik základních funkcí:

-	- Sleduje, zda daný člověk každý den alespoň hodinu cvičil (aktuálně se to detekuje pomocí EMG + tepové frekvence přes 120 BPM) a když ne, tak s ním potom hodinu cvičí Kilovoltíkem. To jednak řeší nedostatek fyzické aktivity a jednak působí jako negativní motivace necvičit (předpokládáme, že věšina lidí bude hodinu kilovoltíkování považovat za značně nepříjemnou).	+	- Sleduje, zda daný člověk každý den alespoň hodinu cvičil (aktuálně se to detekuje pomocí EMG + tepové frekvence přes 120 BPM) a když ne, tak s ním potom hodinu cvičí Kilovoltíkem. To jednak řeší nedostatek fyzické aktivity a jednak působí jako negativní motivace necvičit (předpokládáme, že většina lidí bude hodinu kilovoltíkování považovat za značně nepříjemnou).
	- Při sportování vypouští pomocí vestavěné pumpy nepatrná množství drog (pozitivní motivace). Ve spolupráci s Trimenem aktuálně experimentálně určujeme, kterou drogu bude nejvhodnější použít.		- Při sportování vypouští pomocí vestavěné pumpy nepatrná množství drog (pozitivní motivace). Ve spolupráci s Trimenem aktuálně experimentálně určujeme, kterou drogu bude nejvhodnější použít.
	- Pomocí kilovoltíkování žaludku potlačuje pocit hladu.		- Pomocí kilovoltíkování žaludku potlačuje pocit hladu.
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	===== Financování =====		===== Financování =====

-	Výroba a implantace //Krabičky// bude ztrátová, protože se nám nepodařilo přesvědčit většinu zdravotních pojišťoven, aby ji hradili, a chceme umožnit její použití co největšímu množství brmlabáků. //Krabička// bude používat pokročilé technologie DRM a vendor lock-in a bude tak financována z prodeje souvisejících služeb:	+	Výroba a implantace //Krabičky// bude ztrátová, protože se nám nepodařilo přesvědčit většinu zdravotních pojišťoven, aby ji hradily, a chceme umožnit její použití co největšímu množství brmlabáků. //Krabička// bude používat pokročilé technologie DRM a vendor lock-in a bude tak financována z prodeje souvisejících služeb:

	* V případě nedodržení bodu (1) bude možné vyhnout se z kilovoltíkování zakoupením odpustku. Jeho cena se bude s každým dalším nedodržením v řadě zvyšovat (model již v praxi používaný firmou Duolingo)		* V případě nedodržení bodu (1) bude možné vyhnout se z kilovoltíkování zakoupením odpustku. Jeho cena se bude s každým dalším nedodržením v řadě zvyšovat (model již v praxi používaný firmou Duolingo)
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	* [[https://books.google.cz/books?id=p7btBgAAQBAJ&hl=cs&source=gbs_book_other_versions_r&cad=4\|Experimentation with Human Beings, Katz, J., 1972, ISBN: 0871544385, 9780871544384]]		* [[https://books.google.cz/books?id=p7btBgAAQBAJ&hl=cs&source=gbs_book_other_versions_r&cad=4\|Experimentation with Human Beings, Katz, J., 1972, ISBN: 0871544385, 9780871544384]]
	* [[https://en.wikipedia.org/wiki/Brave_New_World\|Brave New World, Huxley, A., 1932, ISBN: 0-06-092987-1]]		* [[https://en.wikipedia.org/wiki/Brave_New_World\|Brave New World, Huxley, A., 1932, ISBN: 0-06-092987-1]]
		+	* http://www.osel.cz/8377-naplast-na-cukrovku-bolave-klouby-i-melanom.html

Nevrdlouže

Anonymous (anonymous@undisclosed.example.com) — 2014-08-11T03:17:00+00:00

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	+	====== Nevrdlouže ======

	+	//Nevrdlouže// is a polygraphic signal analysis suite. Though polygraphs have been used worldwide as lie detectors, they are convenient for experiment monitoring, enhanced interrogation parameter assessment or as a biofeedback training input device.

rEyKG LKD210

Anonymous (anonymous@undisclosed.example.com) — 2016-05-02T20:47:50+00:00

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	+	====== rEyKG LKD210 ======
	+
	+	This is transportable small EKG monitor originally used in ambulance cars.
	+
	+	=== Field operation manual ===
	+
	+	- Prerun check:
	+	* Batteries: Displayed current should be more than 120 uA. If not, charge before use.
	+	* Amplifier set to zero
	+	* Open the display lid
	+	- Connect EKG cable to U1
	+	- Connect EKG cable to subject:
	+	* RED -> right hand
	+	* YELLOW -> left hand
	+	* BLACK -> right leg
	+	* GREEN -> left leg
	+	- Power ON:
	+	* 1st time it will not start
	+	* 2nd time it will boot up (wait few secs)
	+	- Measuring:
	+	* Select circuit (svod)
	+	* Wait for signal to stabilize
	+	- Press amplifier down to zero the signal
	+	- If running away, press again
	+	* Set speed
	+	* Set brightness to usable minimum
	+	- Power OFF:
	+	* Disconnect subject
	+	* Press power off
	+	* Close the lid
	+
	+	<note warning> Do NOT touch contrast and vertical shift </note>
	+
	+
	+	=== Recharging ===
	+
	+	<note warning>
	+	Recharge if displayed current is lower than 120 uA!
	+
	+	Do NOT use when recharging!
	+	</note>
	+
	+	- Screw out batteries (back panel)
	+	- Pull out charger + connectors
	+	- Charger LED:
	+	* Blue = fully charged
	+	* Red = charging
	+	- Power source - any 5V (build in microUSB connector)
	+	- Recharge BOTH batteries, ONE in a time
	+	- Screw charge + connectors back
	+	- Runtime ~6 hours
	+
	+	=== PC ===
	+
	+	- Set brightness to minimum
	+	- Connect Arduino cable to C2 (SW same as [[project:medlab/ekg]])
	+	- BLACK wire is ground
	+	- Set signal amplifier to reasonable minimum
	+
	+	Script for gnuplot to display all circuits (svody) in one plot. Let the circuits be: 1.txt for I, 2.txt for II,... 6.txt for aVF.
	+
	+	When using WXT terminal, run it in persistent mode "gnuplot -p raykg.gnuplot"
	+
	+	<code>
	+	#set terminal wxt size dynamic
	+	#set terminal svg size 1060,1280 dynamic enhanced
	+	#set output 'raykg.svg'
	+	set terminal png size 1060,1280
	+	set output 'raykag.png'
	+
	+	set key left outside
	+	#set key vertical left
	+
	+	set mxtics
	+	set mytics
	+	set style line 12 lc rgb '#dddddd' lt 1 lw 1.5
	+	set style line 13 lc rgb '#dddddd' lt 1 lw 0.5
	+	set grid xtics mxtics ytics mytics back ls 12, ls 13
	+	set ytics scale 1
	+
	+	unset xtics
	+	set xtics format ""
	+	set xtics scale 1
	+
	+	set xrange [100:1000]
	+	set multiplot layout 6,1
	+
	+	set ylabel "I"
	+	plot "./1.txt" every ::0 notitle "I" with line
	+	unset ylabel
	+	set ylabel "II"
	+	plot "./2.txt" every ::4535 notitle "II" with line
	+	unset ylabel
	+	set ylabel "III"
	+	plot "./3.txt" every ::78 notitle "III" with line
	+	unset ylabel
	+	set ylabel "aVL"
	+	plot "./4.txt" every ::110 notitle "aVL" with line
	+	unset ylabel
	+	set ylabel "aVR"
	+	plot "./5.txt" every ::0 notitle "aVR" with line
	+
	+	set format x '%0.f'
	+	unset ylabel
	+	set ylabel "aVF"
	+	plot "./6.txt" every ::40 notitle "aVF" with line
	+	unset multiplot
	+	</code>
	+
	+
	+	<note tip> Something went wrong? Contact [[user:ray]] for solution</note>
	+

Medlab sono user guide

Anonymous (anonymous@undisclosed.example.com) — 2015-11-11T00:30:21+00:00

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	+	===== Medlab sono user guide =====

	+	This simple user manual should be the starting point and a minimal knowledge base for anyone who wants to operate the sonograph in medlab.
	+
	+	Full documentation is available in medlab.
	+
	+
	+	== Boot ==
	+	- Turn on the red switch on the far left side of the operator panel
	+	- Take a look on the panel under the screen - every LED should be on
	+	- Do NOT touch any other button in the area
	+	== Subject preparation ==
	+	- Undress subject as appropriate
	+	- Put some sonogel on the subject where appropriate
	+	- Put sono head to the subject, so the insides should be visible on the screen
	+	== Object measurements ==
	+	- B mode - depth(y) x longitude(x)
	+	- The skin surface is on the top of the screen
	+	- Horizontal axis displays centered longitude
	+	- M mode - depth (y) x time (x)
	+	- Vertical axis is depth
	+	- Horizontal axis is time seprated by line each 1 sec
	+	- Doppler - TODO
	+	== Tips and tricks ==
	+	- Freeze - pause image
	+	- Next to Gain (lower right)
	+	- Distance measurement
	+	- M mode
	+	- Cursor is displayed on the screen
	+	- Use trackball to navigate to starting point
	+	- Press Channel 1
	+	- Navigate to the end point
	+	- Press Channel 1
	+	- (Repeat with Channel 2 is appropriate)
	+	- B mode
	+	- Basically the same as M mode
	+	- Trace
	+	- Draw on screen
	+	- Trackball on starting point
	+	- Channel 1
	+	- Trackball draws line
	+	- Channel 1 closes the circuit
	+	- Repeat with Channel 2 if appropriate
	+	- Press Trace again to leave
	+	- Ellipse - draw ellipse
	+	- Trackball on one end of primary axis
	+	- Channel 1
	+	- Trackball to the end of primary axis
	+	- Channel 1
	+	- Use trackball to modify the secondary axis of the ellipse/circle drawn
	+	- Repeat with Channel 2 if appropriate
	+	- Press Ellipse to leave
	+	- Notes - Type text on screen
	+	- Press Char
	+	- Trackball on position
	+	- Type the text
	+	- Repeat ^^
	+	- Compatible with measurement mode
	+	- Press Char to clear the text
	+
	+
	+	Recording: the machine has composite video output. There is an USB grabber connected. Use mplayer to view and something like cheese (from Gnome) to capture, or VLC to view and capture/encode/store at once.

Medlab

Anonymous (anonymous@undisclosed.example.com) — 2017-12-28T05:15:44+00:00

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	* [[project:medlab:sono\|Sono]]		* [[project:medlab:sono\|Sono]]
	* [[project:medlab:ekg\|Tesla EKG dumper]]		* [[project:medlab:ekg\|Tesla EKG dumper]]
-	* [[project:medlab:reykg\|rEyKG]]
	* [[project:medlab:kilovoltik]]		* [[project:medlab:kilovoltik]]
	* [[project:medlab:hellkg\|Big EKG]]		* [[project:medlab:hellkg\|Big EKG]]
		+	* [[project:medlab:krabicka]]
	===== TODO =====		===== TODO =====

Ultrazvuk

Anonymous (anonymous@undisclosed.example.com) — 2015-10-27T13:57:22+00:00

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	+	====== Ultrazvuk ======

	+	===== Ovládání =====
	+
	+	FIXME
	+
	+	===== Nahrávání =====
	+
	+	kernel 4.1 a určitě i nějaké verze okolo
	+
	+	<code>
	+	git clone https://github.com/Manouchehri/smi2021
	+	cd smi2021/
	+	sed -i '0,/obj/{s/$(CONFIG_VIDEO_SMI2021)/m/}' Makefile
	+	make -C /lib/modules/$(uname -r)/build M=$PWD modules
	+	wget https://github.com/stevelacy/EasyCap/raw/master/somagic_firmware.bin
	+	cp somagic_firmware.bin /lib/firmware/smi2021_3c.bin
	+	insmod smi2021.ko
	+	mplayer tv:// -tv device=/dev/video1 -ao none
	+	</code>