Blog - All Comments

RE: Oxygen Saturation - SpO2 Measurement

P.Meghana — Tue, 03 Jun 2025 12:45:43 GMT

Sir...I have a dataset containing red and infrared values... but how many ever times i calculated spo2.... all the values are below 80 only... like 60,70 etc
i used the formula given by you also
please help...[View:/cfs-file/__key/commentfiles/f7d226abd59f475c9d224a79e3f0ec07-16e3b0c5-6443-4e71-9036-8ec63a744208/1.csv:640:360]

RE: Oxygen Saturation - SpO2 Measurement

titusece — Sat, 10 Apr 2021 14:16:38 GMT

Hello,

Now the data will be streamed as a character device to the node created at /dev/iio:device1
read the data to a file.

cat iio:device1 > file.txt

I have enabled the MAX30102 sensor in same way, but streaming is not working.

What is the wrong with my flow ?

root@ninou-desktop:/sys/bus/iio/devices/iio:device1# cat in_temp_raw

379

root@ninou-desktop:/sys/bus/iio/devices/iio:device1# cat in_temp_scale

0.062500000

root@ninou-desktop:/sys/bus/iio/devices/iio:device1# cat buffer/enable

root@ninou-desktop:/sys/bus/iio/devices/iio:device1# cat scan_elements/in_intensity_ir_en

root@ninou-desktop:/sys/bus/iio/devices/iio:device1# cat scan_elements/in_intensity_red_en

root@ninou-desktop:/sys/bus/iio/devices/iio:device1#

root@ninou-desktop:/sys/bus/iio/devices/iio:device1# cat scan_elements/in_intensity_red_index

root@ninou-desktop:/sys/bus/iio/devices/iio:device1# cat scan_elements/in_intensity_ir_index

root@ninou-desktop:/sys/bus/iio/devices/iio:device1#

root@ninou-desktop:/sys/bus/iio/devices/iio:device1# cat /dev/iio\:device1

^C --> I don't see any data here

root@ninou-desktop:/sys/bus/iio/devices/iio:device1#

root@ninou-desktop:/sys/bus/iio/devices/iio:device1# ls

buffer dev in_temp_raw in_temp_scale name of_node power scan_elements subsystem uevent

root@ninou-desktop:/sys/bus/iio/devices/iio:device1# ls buffer/

enable length watermark

root@ninou-desktop:/sys/bus/iio/devices/iio:device1#

RE: Oxygen Saturation - SpO2 Measurement

DAB — Wed, 29 Jul 2020 18:44:19 GMT

Thanks for explaining how the ratios work.

DAB

RE: Fujitsu announces health-monitoring software that can detect pulse-rate measurements on any camera-equipped device

markvenn — Thu, 30 Apr 2015 12:16:25 GMT

I read this at the end of April and had to check the date that this was originally posted. No, it wasn't the 1st April although I thought it was at first.

There is part of me that thinks this is great, where could it lead? How about a lie detector using visuals? This is the part that I am not keen on. Seems a logical progression to me though. Then how about a system that looks for intent using cc tv cameras around cities?

It has the power for good, but also the power for bad could easily come from it in the next decade or so.

Just my thoughts anyway.

RE: Fujitsu announces health-monitoring software that can detect pulse-rate measurements on any camera-equipped device

Former Member — Wed, 29 Apr 2015 11:09:35 GMT

Over the years, new medical advancement and techniques have completely changed the face of healthcare. The medical industry has always brought the best and superior facilities for patients. Often such improved techniques rely on health software and LIS system for their work. Not only diagnosing and treating patients, there are lots of administrative tasks associated with medical software to run a successful medical practice. Heart rate monitor is one of its fine examples. They offer quick access to patient information, give detailed medical information and help physicians to offer best possible cure.

RE: Fujitsu announces health-monitoring software that can detect pulse-rate measurements on any camera-equipped device

Former Member — Wed, 29 Apr 2015 05:44:57 GMT

Health care industry has been seeing great changes since long. One of its fine example you have mentioned in the post. What makes it more useful is the way the doctor as well as patient can handle such device with so ease. Health monitoring software helps physicians to know patient information in any condition.

RE: ECG signal amplication

Former Member — Tue, 30 Dec 2014 06:31:37 GMT

Design and development of medical devices should be according to the guidance of FDA. It will ensure you about good quality of medical device which will never fail during real use. There are frameworks given for manufacturers to develop and implement design controls. However, most important concern to look out is the medical device security from cyber attack.

RE: ECG signal amplication

Former Member — Tue, 23 Dec 2014 10:44:11 GMT

Get information on this site ieee

RE: ECG signal amplication

dougw — Sun, 11 May 2014 19:03:27 GMT

Here is a typical first amplifier stage (from the internet) showing the driven shield and leg reference:

[View:/resized-image/__size/620x314/__key/commentfiles/f7d226abd59f475c9d224a79e3f0ec07-2d71212e-d5ed-4da3-8dbc-bd74cd3f4d72/2500.contentimage_5F00_176516.jpg:620:314]

RE: ECG signal amplication

sunnyiut — Sun, 11 May 2014 18:04:40 GMT

Hello,

between 1 and 5mV !!! or 0 and 3.3V? I think the GPIO has input voltage 0v and 3.3v

however, diagnostic systems use 12 LEAD ECG, but for monitoring purpose u just need 3 LEADs [limb leads]. Frequencies between 0.05Hz to 150Hz would be good enough. For just monitoring a single Lead the following block diagram can meet the purpose. While you may need to vary the 2nd stage gain [Gain-25] according to your voltage range. A level shifter will be necessary if you use dual power supply.

Say for LEAD1 you need to connect the LA at the non-inverting input of INA [instrumentation amplifier] and the RA at the inverting input. You will need another electrode which will be connected at the RL as reference [GND]. You can go for RLD [right leg drive] to reduce the line power noise. where the signal is inverted and driven back into the patient through the right leg by an amplifier. you can get the signals without RLD, but it will be a little bit noisy. as you are using Pi, you can implement a 50/60Hz notch filter in your firmware which will improve the signal a lot.

RE: TedCas & Leap Motion

DAB — Tue, 29 Apr 2014 18:09:19 GMT

Great application for touch less technology.

DAB

RE: Fujitsu announces health-monitoring software that can detect pulse-rate measurements on any camera-equipped device

DAB — Fri, 19 Apr 2013 20:20:40 GMT

I think we will see more of these kind of developments.

We already have a lot of useful and simple to use sensors available in nearly every home today.

With the development of good software, people can begin to generate their own health baseline.

A baseline is essential for the medical community to move from a "shotgun" approach to medicine to a personalized approach.

The lack of detailed individual baselines has kept the personalized approach from being exploited.

With a good baseline, your individual medical care can be specifically crafted just for you. No more "take two asperins and call me in the morning" treatments.

A detailed baseline enables the medical community to quickly narrow down your current symptoms to generate the critical "new data" about you.

These unique data differences will make a world of difference in how you can get the right treatment for your real issues, not apparent issues.

If they can make the software work, we will see a wonderful improvement in medical treatments.

A great new exploitation of current technology.

Just my opinion,

DAB

RE: Engineering synthetic tissue using 3D printers

DAB — Thu, 11 Apr 2013 19:39:31 GMT

I could see this approach working with providing the body additional specific material at pointed parts of the body.

I am thinking about the need for synthetic skin for burn patients. They could deposit nutrients and binder material to seal the skin so that the body could generate skin cells on its own without losing the moisture through the burned area.

I agree with the designer, there is a large potential for this type of medical treatment option just for skin issues alone.

Using this on a small scale, you could make units that could be surgically implanted inside body wounds to do a similar repair to internal organs caused by trauma.

Very interesting.

DAB

RE: EPFL Scientists Develop Implantable Device that Wirelessly Transmits Blood Level Information

DAB — Fri, 22 Mar 2013 20:50:29 GMT

I could see these devices in use for diabetics.

I could also see them used with drug addicts to identify when they ingest controlled substances.

There are a lot of jobs where hazardous material exposure would be life saving. A lot of workers do not know when they have been exposed. These devices could provide vital treatment alerts in otherwise benign environments.

Fire fighters and emergency responders could also use these to help them know when someone has reached a state of exhaustion or overheating.

A lot of posibility exist for this type of instrumentation. Next they need to make them self powered by body heat.

Just a thought,

DAB

RE: Engineers design Cranial Drilling Device that won’t put holes in your brain

DAB — Mon, 13 Aug 2012 19:53:23 GMT

I'm not surprised.

After seeing the Ondemand video on E14 for the new motors, they can easily monitor the back EMF to find the point when the drill gets through the bone. The change in torque would be easily detected to automatically retract the drill bit.

I suspect we will see more applications like this as the new motor advances are better understood.

DAB