Monday, July 8, 2024

A disposable, affordable ‘smart diaper’ with RFID tags.

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It’s no secret that the baby will not be able to escape this nightmare, where every bodily function will be constantly monitored. Many people will welcome these intrusive technologies, as they’re convenient and time-saving, but exchanging bodily sovereignty for convenience is never a fair trade. Almost always, it benefits those who want more control over our lives.

Procter & Gamble Co. worked with a subsidiary of Google to develop a baby monitoring system that alerts parents via a smartphone app if a Pampers diaper needs changing. 

Design combines a common diaper material with RFID technology.

A new disposable, affordable “smart” diaper embedded with an RFID tag is designed by MIT researchers to sense and communicate wetness to a nearby RFID reader, which in turn can wirelessly send a notification to a caregiver that it’s time for a change.

For some infants, a wet diaper is cause for an instant, vociferous demand to be changed, while other babies may be unfazed and happy to haul around the damp cargo for lengthy periods without complaint. But if worn too long, a wet diaper can cause painful rashes, and miserable babies — and parents.

Now MIT researchers have developed a “smart” diaper embedded with a moisture sensor that can alert a caregiver when a diaper is wet. When the sensor detects dampness in the diaper, it sends a signal to a nearby receiver, which in turn can send a notification to a smartphone or computer.

The sensor consists of a passive radio frequency identification (RFID) tag, that is placed below a layer of super absorbent polymer, a type of hydrogel that is typically used in diapers to soak up moisture. When the hydrogel is wet, the material expands and becomes slightly conductive — enough to trigger the RFID tag to send a radio signal to an RFID reader up to 1 meter away.

The researchers say the design is the first demonstration of hydrogel as a functional antenna element for moisture sensing in diapers using RFID. They estimate that the sensor costs less than 2 cents to manufacture, making it a low-cost, disposable alternative to other smart diaper technology.

Over time, smart diapers may help record and identify certain health problems, such as signs of constipation or incontinence. The new sensor may be especially useful for nurses working in neonatal units and caring for multiple babies at a time.

Pankhuri Sen, a research assistant in MIT’s AutoID Laboratory, envisions that the sensor could also be integrated into adult diapers, for patients who might be unaware or too embarrassed to report themselves that a change is needed.

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“Diapers are used not just for babies, but for aging populations, or patients who are bedridden and unable to take care of themselves,” Sen says. “It would be convenient in these cases for a caregiver to be notified that a patient, particularly in a multibed hospital, needs changing.”

“This could prevent rashes and some infections like urinary tract infections, in both aging and infant populations,” adds collaborator Sai Nithin R. Kantareddy, a graduate student in MIT’s Department of Mechanical Engineering.

Sen, Kantareddy, and their colleagues at MIT, including Rahul Bhattacharryya and Sanjay Sarma, along with Joshua Siegel at Michigan State University, have published their results today in the journal IEEE Sensors. Sarma is MIT’s vice president  for open learning and the Fred Fort Flowers and Daniel Fort Flowers Professor of Mechanical Engineering.

Parents will soon know when a diaper needs to be changed — before all the crying starts.

Scientists from Penn State University have created a “smart diaper” — a nappy with a built-in sensor that will send an alert to a phone once it gets wet.

The diaper is made out of paper that has been pre-treated with sodium chloride (salt) and has an outline of a circuit board on it that is traced over with a pencil to transfer graphite to the surface with a tiny lithium battery attached.

Researchers embedded four of the sensors between the layers of a diaper in order to create the “smart diaper,” as detailed in the journal Nano Letters.

Once the diaper gets wet, the graphite reacts with the liquid and sodium chloride and, as it’s absorbed by the paper, electrons will flow to the graphite to set off a sensor.

The sensor will send a message to a phone, alerting the person that the baby’s diaper needs to be changed.

It can even provide information about how wet the diaper is, which could let parents decide if the diaper needs to be changed immediately.

“That application was actually born out of personal experience,” lead author Dr. Huanyu Cheng, who is the father to two young children, said. “There’s no easy way to know how wet is wet, and that information could be really valuable for parents.”

The sensor can also be used in hospitals or nursing homes — and can even help discover some major health concerns such as cardiac arrest or pneumonia.

“The sensor can provide data in the short-term, to alert for diaper changes, but also in the long-term, to show patterns that can inform parents about the overall health of their child,” Huanyu said.

Researchers also tested the device in a face mask and found that it could determine three breathing states — deep, regular and rapid — and could potentially provide data that could detect the onset of a heart attack or when someone stops breathing.

It can also sense humidity changes in the air as part of a non-contact switch with the presence of a finger, without the finger actually touching the device.

“The atoms on the finger don’t need to touch the button, they only need to be near the surface to diffuse the water molecules and trigger the sensor,” Huanyu explained. “When we think about what we learned from the pandemic about the need to limit the body’s contact with shared surfaces, a sensor like this could be an important tool to stop potential contamination.”

While the device and phone app are both still in the developmental stage, the scientists hope the smart diaper will soon be made available to the public.

What Is a Smart Diaper, and How Does It Work?

Just when you thought smart technology couldn’t get any more intrusive than it already is, manufacturers of baby products come up with a smart diaper. The most recent examples of smart diapers are the Lumi by Pampers or the Monit x Huggies diaper line, designed to help you monitor your baby through a “connected care system”.

For new moms and dads struggling with the anxieties that come with being first-time parents, smart diapers promise to help them easily monitor their babies’ movements, sleep and pee patterns for a happy and healthy baby.

What Is a Smart Diaper

A smart diaper is a convenient underwear with an RFID sensor that alerts parents when it’s time to change the baby.

In the first several months of their lives, babies tend to urinate often, approximately 20 times a day. If you had to change your baby’s diaper each time he or she wets or soils the nappy, it’d get incredibly exhausting and expensive.

It’s not necessary to wake your baby every time just to change a wet diaper, which is about 4 tablespoons of liquid. However, with a poopy diaper, which counts as two wets, you need to change the baby immediately because it’ll irritate the baby’s skin.

Smart diapers are thus a way of helping parents prevent such skin irritations and other problems that may arise from leaving the diaper on the baby too long and make the baby miserable.

How Smart Diapers Work

Smart diapers are built with a tiny RFID sensor that detects moisture in the baby’s diaper and then sends a signal to a nearby receiver, which then gets to the parent or caregiver via an alert.

The sensor, developed by researchers at MIT, doesn’t bulk up the diaper. It’s simply embedded in the hydrogel found in disposable diapers. The hydrogel expands when the diaper is wet and triggers a tag to send signals to the RFID reader within one meter radius. All this happens without the use of batteries.

This way, you (the parent or caregiver) can place the RFID sensor’s reader next to the baby’s crib, or your bed (yes, there are smart beds , too) which enables the sending of alerts to your smartphone. If you have a keychain with a portable reader, you can also get alerts.

( https://www.maketecheasier.com/smart-home/what-is-smart-bed/ )

Is It Safe to Use a Smart Diaper?

Smart diapers are rather expensive at the moment and built around a removable Bluetooth sensor, which you need to charge and clean regularly. It tries to do too much as a smart solution by tracking not only wetness (pee and poop) but also your child’s sleep patterns.

As we’ve already seen, the RFID sensor is placed under a type of hydrogel, in the form of a layer of super absorbent polymer, which usually soaks up moisture in diapers. When the diaper is wet, the material will expand, send a signal to the sensor and you get the alert on your phone.

In terms of safety, your baby’s skin doesn’t get into contact with the sensor, just as it doesn’t come into contact with the hydrogel liquid tucked away in the diaper. Similarly, the sensor doesn’t use any batteries which would have otherwise been dangerous, especially with lead leaks.

For now, there are no known dangers to using the smart diaper, but with time and further research, these may be brought out by the developers. Otherwise, the regular diaper works just fine for your baby.

Are Safe Diapers Necessary?

Diapers aren’t just for babies though – aging populations or bedridden patients need them, too. The latter, who are unable to take care of themselves, make the case for smart diapers viable, as caregivers can be notified of patients who need changing, especially in multi-bed hospitals.

Even though researchers hope for a cheaper smart diaper with an integrated, low-cost sensor that can detect moisture in conventional diapers, they seem like overkill really. Currently, there are normal diapers that have a little yellow line which turns to a blue color when your baby pees so you don’t even have to look in the diaper.

Plus, if your baby has peed or pooped, it’s easy to know because he or she will cry. When the baby cries, you check the diaper first, and if it’s dry, then you’ll know he or she is gassy, hungry, or about to go to the bathroom.

Since the dawn of time, parents have been taking care of their babies the natural way – waiting for the cry. While the diaper department has seen some simple technological breakthroughs over time, a special smart diaper with an RFID sensor just seems to be too much already.

Besides, smart diapers will certainly cost a lot more than your regular brand of diapers, and restocking only adds to the costs.

There’s no strong case for the use of smart diapers for babies as there is with the case of incontinent seniors or aging people who aren’t able to manage their bowel movements and need help with that. If anything, you can know when your baby has peed or pooped or if their sleep patterns aren’t regular because anything that affects them will affect you too.

Wrap-Up

As technology advances, you’ll definitely be seeing even more digital products in the future that seek to analyze babies. For now, though, the best thing to do is just cuddle your baby and build a relationship with them to understand them better. This is more important than buying an expensive pack of smart diapers that can do no more good than a regular diaper would for your baby.

Source: MIT News, GNEWS, Maketecheasier, Kidsactivitiesblog-Image

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