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articles and technical details

Fox and Friends segment about the MonBaby

http://video.foxnews.com/v/5475031826001/?playlist_id=930909787001

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NY Baby Show – review 1

 

 

Blog: http://www.usjapanfam.com/blog/best-baby-products-from-the-2017-new-york-baby-show

 

 

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Mondevices went to NY baby show

Mondevices team went to NYC baby show, the biggest baby show in US. We were also picked for Fox and Friends baby product showcase. We got other media coverage, links to the videos will follow shortly.

IMG_4623

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Measurements of BLE signal indoors

Measurements of BLE signal strength (RSSI) dependency on the range indoors

 

Introduction

There is not much results of Bluetooth Low Energy range measurements to be found on the web. The primary reason is that it’s hard to control for environment, wall and floor materials. That being said, the numerous use cases for Bluetooth LE, from now on BLE, exactly in that type of environment, indoors. We, at Mondevices, decided to fill that gap.

 

Description of Setup

We took various BLE devices that transmit packets about 10 times per second and varied antenna designs. Most of PCBs were based on TI chip CC254x family. We have also included a combination of CC2541 with a power amplifier CC2590 and also used Texas instrument RF Studio with a mounted antenna. Below is a detailed description of the devices used.

  • CC2590 Wire = CC2541/CC2590 with 30.6mm wire antenna perpendicular to the PCB, TX power set to +10dBm see attachment CC2590_WIRE.jpg
  • CC2590_MIFA = CC2541/CC2590 with MIFA wire antenna, TX power set to +10dBm, see attachment CC2590_MIFA
  • TI_DEV = Texas Instrument evaluation module with CC2540, TX power set to +4dBm, see attachment TI_DEV.jpg
  • DI_POLE2 = Your prototype di-pole antenna PCB, TX power set to +4dBm, see attachment DI_POLE2.jpg
  • MollyCHIP1 = Standard monBaby PCB with standard chip antenna, TX power set to +4dBm, see attachment Standard_monBaby.jpg
  • WIRE = Standard monBaby PCB with 30.6mm WIRE antenna perpendicular to PCB, TX power set to +4dBm, see attachment monBaby_WIRE.jpg
Name UUID Description
CC2590 MIFA 68:9e:19:18:7a:a0 CC2541+CC2590 amplifier using MIFA antenna
WIRE 20:91:48:4c:9b:c5 CC2540 with vertical 1/4 wave-length antenna
NoBattery b4:99:4c:74:d6:99 CC2540 with chip antenna and battery removed
CC2590 Wire 68:9e:19:18:83:f7 CC2541+CC2590 amplifier using wire antenna
TiDev b4:99:4c:64:69:26 TI Smart RF development kit antenna
Roach1 b4:99:4c:74:e8:c5 CC2540 with wire antenna bent like roach antenna
Wire3Coil b4:99:4c:74:c5:92 CC2540 with wire coiled around circular enclosure
NoBattery b4:99:4c:74:d6:99 CC2540 with battery far away from PCB
Molex Antenna b4:99:4c:74:e4:8d CC2540 with Molex spiral antenna
Roach2 b4:99:4c:74:b7:d5 Roach 2 has antenna bent close to PCB
MIFA b4:99:4c:74:ef:0a CC2540 (inverse F) MIFA antenna in the enclosure
CHIP2Louise b4:99:4c:74:b2:89 CC2540 chip antenna called Louise in the enclosure
CHIP1Molly 20:91:48:4c:a3:8a CC2540 chip antenna called Molly in the enclosure

We have tried to find the best performing devices that could operate at furthers distances from the office and keep steady connection. We have found that TI RF Dev Kit and CC2590 booster are consistently perform better than other devices. TI Dev Kit has a large wave-length antenna and CC2590 boosts power transmission to 10 dbm, which is 4 times more than current chip antenna at 4 dbm setting or 8-9 times better than CC2541 0 dbm setting.

 

The photo of BLE range test setup describes positioning of all the test devices.

 

We tried all different combinations of antenna while trying to stay as close to same technology stack of TI CC254x family.

IMG_3815

The close up of PCB with 1/4 wire antenna, CC2590 combo with MIFA and wire antenna.

IMG_3817

Measurements

We have conducted measurement of RSSI strength of advertising packets of all 13 devices using TI Smart RF packet sniffer. We stored the results and parsed them with our custom parser script written in python. The results are attached as plots and tables.

Results

We did several measurements starting within in the same room in the office confines, then outside in the most RF challenging area of the kitchen and outside in the long corridor. The results of RSSI strength measurements of advertising packets are shown below. To avoid clatter on graphs we only display top three and top bottom plots. The tables shows stats for all

the devices. The kitchen area is very typical to every office and home, with metal surfaces of refrigerator, fax and printer machines and surrounding offices with BLE speakers, wearables and printers. Metal surfaces create destructive interference, where BLE signal interfere with itself. Other electronic devices create electromagnetic RF interferences. We counted around 200 BLE devices sending advertisement packets.

In the same room

In the office, same room where we placed all the devices, we can detect all the signals. This is an expected and obvious result. What is interesting that the biggest RSSI values we get from TI Dev Kit, CC2590 booster combo and, most surprising, just a simple vertical 1/4 wave length antenna positioned perpendicular to the PCB plane

InOffice

The table below shows the stats for all the devices, not just top and bottom three. As one can see devices with power booster, CC2590, shows consistently on top.

UUID Alias MeanRSSI StdDevRSSI VarianceRSSI MinRSSI MaxRSSI Count FCSerrors FCSerror%
68:9e:19:18:83:f7 CC2590 Wire

-37.58

2.86

8.16

-50

-33

187

0

0

68:9e:19:18:7a:a0 CC2590 MIFA

-34.21

3.45

11.9

-47

-30

187

0

0

b4:99:4c:74:e8:c5 Roach1

-44.31

2.95

8.72

-55

-40

186

0

0

20:91:48:4c:a3:8a CHIP1Molly

-55.22

2.98

8.87

-66

-51

186

2

1.08

b4:99:4c:64:69:26 TiDev

-42.95

3.27

10.71

-54

-38

185

0

0

20:91:48:4c:9b:c5 WIRE

-42.48

3.34

11.17

-54

-36

185

0

0

b4:99:4c:74:b7:d5 Roach2

-57.35

3.13

9.78

-68

-50

176

6

3.41

b4:99:4c:74:e4:8d Molex Ant

-58.27

3.07

9.45

-68

-51

172

14

8.14

b4:99:4c:74:c5:92 Wire3Coil

-59.29

2.82

7.97

-67

-53

156

10

6.41

b4:99:4c:74:b2:89 CHIP2Louise

-61.53

2.4

5.78

-67

-58

97

28

28.87

b4:99:4c:74:d6:99 NoBattery

-60.29

2.82

7.95

-66

-54

78

18

23.08

b4:99:4c:74:ef:0a MIFA

-64.29

1.96

3.82

-68

-60

21

17

80.95

As one can see the strongest signals are from CC2590 combo with and without WIRE antenna, and from CC2540 with WIRE antenna. The percentage of FCS errors that demonstrate the data loss is also the least in CC2590+CC2541 combo and in CC2540 with the WIRE antenna.

 

In the RF dead zone – the kitchen

The kitchen is one of the most challenging from RF interference perspective environments. Here  only a few devices survived.

KitchenTable

The table below shows the stats for all the devices in the kitchen.

UUID Alias MeanRSSI StdDevRSSI VarianceRSSI MinRSSI MaxRSSI Count FCSerrors FCSerror%
68:9e:19:18:83:f7 CC2590 Wire

-60.59

1.87

3.5

-66

-57

133

0

0

20:91:48:4c:9b:c5 WIRE

-64.62

1.7

2.87

-70

-58

125

6

4.8

b4:99:4c:74:e8:c5 Roach1

-68.07

1.45

2.1

-73

-65

114

10

8.77

68:9e:19:18:7a:a0 CC2590 MIFA

-68.44

2.94

8.63

-76

-62

114

14

12.28

b4:99:4c:74:b7:d5 Roach2

-74.67

1.28

1.65

-77

-72

63

33

52.38

b4:99:4c:64:69:26 TiDev

-75

1.68

2.83

-79

-71

48

21

43.75

b4:99:4c:74:e4:8d Molex Ant

-75.98

1.01

1.02

-79

-73

46

34

73.91

b4:99:4c:74:c5:92 Wire3Coil

-76.94

1.48

2.18

-80

-75

32

25

78.13

b4:99:4c:74:d6:99 NoBattery

-77

2.6

6.77

-81

-71

13

7

53.85

b4:99:4c:74:b2:89 CHIP2Louise

-80

0

0

-80

-80

4

4

100

b4:99:4c:74:ef:0a MIFA

-79.67

0.47

0.22

-80

-79

3

3

100

20:91:48:4c:a3:8a CHIP1Molly

-80

1

1

-81

-79

2

1

50

Again in the kitchen are the strongest signal and lowest errors are in CC2590 combos and in WIRE antenna.

When we tried to walk beyond the kitchen table we only observed CC2590 combo surviving the distance and kitchen interference with high rate of data errors.

In the long corridor

We also did measurements in the corridor far away from the kitchen we got slightly better results.

Coridor

UUID Alias MeanRSSI StdDevRSSI VarianceRSSI MinRSSI MaxRSSI Count FCSerrors FCSerror%
68:9e:19:18:7a:a0 CC2590 MIFA

-66.67

2.92

8.52

-78

-63

87

1

1.15

20:91:48:4c:9b:c5 WIRE

-71.19

2.89

8.33

-81

-68

68

7

10.29

b4:99:4c:74:d6:99 NoBattery

-74.62

1.74

3.04

-83

-72

60

13

21.67

68:9e:19:18:83:f7 CC2590 Wire

-73.67

3.28

10.76

-80

-67

52

7

13.46

b4:99:4c:64:69:26 TiDev

-72.45

3.06

9.34

-79

-67

42

4

9.52

b4:99:4c:74:e8:c5 Roach1

-75.35

1.85

3.4

-78

-71

34

9

26.47

b4:99:4c:74:c5:92 Wire3Coil

-77.6

0.8

0.64

-79

-76

15

4

26.67

Not surprisingly the strongest signals and lowest FCS errors are from CC2590 combo with and without WIRE antenna, and from CC2540 with WIRE antenna.

Walking towards the advertising devices

The last test in this document we have walked from the area past the kitchen towards the advertising devices. Below is the graph that shows graphs and tables with RSSI values.

WalkingTowardsDevices

UUID Alias MeanRSSI StdDevRSSI VarianceRSSI MinRSSI MaxRSSI Count FCSerrors FCSerror%
68:9e:19:18:7a:a0 CC2590 MIFA

-58.8

10.72

115.02

-74

-34

51

2

3.92

68:9e:19:18:83:f7 CC2590 Wire

-58.66

11.73

137.62

-77

-34

50

5

10

20:91:48:4c:9b:c5 WIRE

-61.04

9.8

95.95

-76

-38

45

3

6.67

b4:99:4c:64:69:26 TiDev

-58.64

12

144.09

-77

-30

42

3

7.14

b4:99:4c:74:e8:c5 Roach1

-59.68

9.36

87.57

-78

-43

31

2

6.45

b4:99:4c:74:d6:99 NoBattery

-61.81

12.61

159.04

-80

-42

27

3

11.11

b4:99:4c:74:e4:8d Molex Ant

-61.61

10.48

109.8

-82

-47

23

4

17.39

b4:99:4c:74:b7:d5 Roach2

-62.95

8.07

65.09

-76

-51

21

1

4.76

b4:99:4c:74:c5:92 Wire3Coil

-64.68

7.5

56.22

-77

-50

19

4

21.05

b4:99:4c:74:ef:0a MIFA

-59.94

8.04

64.68

-74

-49

16

1

6.25

b4:99:4c:74:b2:89 CHIP2Louise

-64

4.55

20.67

-72

-58

12

2

16.67

20:91:48:4c:a3:8a CHIP1Molly

-63.5

6.95

48.25

-75

-52

12

5

41.67

Just like in previous experiments, we can see that the strongest signals and lowest data errors levels are in CC2590 combos.

Conclusions

We have conducted experiments indoors using different antenna configurations and designs on CC254x IoT SoC technology.

We have consistently observed that the strongest signals that survived both RF interference and distance are

  • CC2590+CC2541 combo
  • WIRE antenna

 

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We have finally release a stable version of the monBridge

We have release a stable version of the monBridge, Bluetooth to WIFI bridge, that takes BLE signal from the MonBaby monitor and converts it into WIFI. This app greatly extends the range of MonBaby monitor. Assuming that the monBridge is in the vicinity of the baby crib, you can now walk around your apartment and your house. The range is really is as good as your wireless WIFI router. Please see our video where we explain how to use it.

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Protected: The Mondevices Inc. Teaser

This content is password protected. To view it please enter your password below:

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A blog about the MonBaby

Karen Lightman, Executive Director of MIG wrote a blog about the MonBaby technology-showcase at MIG Congress.

Here is a picture of Eugene, our COO with Karen

IMG_9680

 

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MonBaby is a finalist at MEMS Technology Showcase – MIG 2015 Congress

Mondevices went to MEMS Industry Group as a Technology Showcase finalist! The results will be announced in a few days, we are holding our fingers crossed.

Screen Shot 2015-11-05 at 1.19.28 PM

We got a bunch of references in press for that:

Memscongress

Reuters

Marketwatch

Here is a snippet:

MEMS Industry Group (MIG)’s annual MEMS & Sensors Technology Showcase atMEMS Executive Congress® US 2015 (November 4-6, 2015 in Napa, CA) highlights some of the newest and most compelling MEMS/sensors-based applications and technologies on the market. MIG today announced the shortlist of finalists who will compete for the title of winner at this year’s event.

 

MonBaby Breathing and Rollover Monitor

Anxious parents can sleep more soundly now that MonBaby® is on the scene. An award-winning baby monitor that snaps like a button onto any article of a child’s clothing, MonBaby gives new parents peace of mind and helps them to sleep better knowing that they will receive an audible alarm on their smartphone if the baby rolls onto his or her stomach during sleep or stops breathing.”

 

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Mondevices at ABC Kids Expo – 2015

Mondevices demoed the MonBaby Smart Button monitor at the 2015 ABC Kids Expo in Las Vegas! Our team was on the ground at booth #2236 now through October 21.

ABC Kids is one of the nation’s largest expos for baby and children’s products. We’re excited to connect with journalists and retailers, and also to see some of the other wonderful new additions to the children’s products industry.

Check out the expo twitter updates: https://twitter.com/ABCKidsEXPO

IMG_5042

 

 

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monBridge – BLE-to-WIFI bridge

We end up developing our own solution for BLE-to-WIFI bridge. Check it out: monBridge

You can find it on google play.

See the video for the demo of the monBridge app on the Android stick:

 

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What is the best technology solution for mobile Bluetooth(Smart)-WiFi bridge

Here is a comprehensive list of hardware available solutions:

BLE PAN
BeagleBone + WiFi-BLE: Page on boardzoo.com $49.99, requires a plastic enclosure, for comparison: BeagleBoard $55 Texas Instruments BeagleBone with SensorTag

Bluetooth mesh network
Internet of Things $49
Zuli Smartplug $55

BLE-WiFi bridge
What’s BluFi? The Bluetooth-to-WiFi Sensor – BluVision $89

WiFi BLE SoC
WL1271-TIWI-BLE | Wi-Fi (IEEE 802.11 (no longer supported by TI, still supported by LSR)
802.11 b/g/n WLAN Module $22.50

TI WiFi BLE combos:
WiLink Combo Solutions – Overview – TI.com
WiLink $39.72
CC3000($34.95) + CC2650

mBeacon: there is no price or any indication that actually an existing product, looks like 3D rendering
Beacon Hub – Bluetooth Low Energy Beacon to Wi-Fi Gateway Solution

TI 3200 launchpad: SimpleLink Wi-Fi CC3200 LaunchPad $30 (SimpleLink Wi-Fi Starter software)

McGateway
McThings: Tiny Wireless Bluetooth Sensors and Controlers $99
mcGateway – (Pre-order Only) – mcThings $80

Waspmote:
Bluetooth Low Energy to Connect Sensors with Smartphones and Tablets
Waspmote Starter Kit | M2M Connectivity $330 AUD (=$260)

CB-OLS BLE WLAN radio
cB OWL355 Multi-radio module
PRESS RELEASE: connectBlue® Announces Multiradio Module for Internet of Things

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Monbaby on Telemundo

http://www.telemundo.com/shows/un-nuevo-dia/videos/un-nuevo-dia/extras/raul-garcia-y-adamari-lopez-te-traen-tecnologia-para-monitorear-los-bebes-video-914736

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Product Launch!!!

Dear Backers/Customers,

Thank you for your patience and sticking with us all the way. We have great news for you – today we have started shipping to our first customers and backers!

Here are pictures of the 1st batch ready for shipping.

2015-03-04 13.22.27
2015-03-02 17.49.31
2015-03-04 13.22.51
2015-02-24 13.57.05

 

 

 

 

 

 

 

 

You should be receiving your MonBaby Smart Button in about 5 business days or so.

Now, some very important notes. Before using your MonBaby Smart Button, please download the latest versions of our application that are now available from monbaby.com/app/index.html or directly from iTunes and Google Play. We are shipping the MonBaby Smart Button with the updated manual, please make sure that you read the manual carefully before using the device and follow all the instructions.

In case you have any suggestions, feedback, questions or concerns (in other words anything), please contact us at support@mondevices.com. We have also setup a support page on our website (available at: monbaby.com/support/) through which you can submit your feedback and inquires at anytime. You feedback is very important for us, especially if it’s constructive criticism and we will be happy to address it.

Best,

The Mondevices team

 

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Electronics has arrived

MonBaby electronics, which was manufactured last week by PNC, has arrived!

And here is the first view of PCB’s (Printed Circuit Boards), which are brains of the future MonBabies:

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MonBaby on IoT

Mondevices showcased MonBaby product on Internet Of Things Fair in New York City. Event was big and sponsored by Microsoft, Flextronics, IEEE. HP, IBM and Atmel were present. We got a lot of attention, collected a lot of contacts and quickly run out of our own materials and business cards. Next time we would need to bring in more.

We got a lot of questions from investors, vendors and service providers. One trend I noticed that there is increasingly a lot of platform being developed that cater to data collected from wearable devices. Wot.io sponsored the event and there were a lot of platforms with open and fee based API.

 

IoT-2

IoT-1

 

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New [final] design

We have finalized a new enclosure and snap design. Note that this is a 3D printed prototype made of a transparent plastic. The real plastic is going to be white, blue or pink. The picture is attached below

Proto

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Mondevices on ABC Shark TV

Last Friday December 5th, Mondevices were invited on an ABC Good Morning America show with Barbara Corcoran from Shark Tank show. We were selected to be one of 15 inventions to have a chance to pitch to Barbara. She chose a waffle maker who will have a one-on-one time with her, but Mondevices got very kind words from her and from the audience. Audience loved our product and was very encouraging. The whole episode had a Christmas theme and people were very cheerful and supportive.

This was the first time I was inside the studio and saw all inner workings of the morning show production. The studio is divided into sections. One section is being filmed while the other section is being prepared for the next segment. Cameras are located in the center of the room and easily rotated between the sections. During the switch the cameras are switched to the outside crowd or to pre-recorded video clips.

After the segment we were treated to an interview with Cameron Diaz. It was very interesting glimpse inside the workbench of TV studio.

Here are some pictures from the GMA show, unfortunately we could not make pictures inside the studio.

GMA-1

 

 

 

 

 

 

 

 

 

 

 

GMA-2

 

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We have passed FCC certification

The FCC TCB certification for the Monbaby Device has been completed.

FCC Certification

 

 

 

 

 

 

 

 

 

 

 

 
Many thanks to JB Kim and Device Factory for the help in getting the certification.

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Monbaby on Fox News!

Monbaby on Fox News!

Today Fox New aired a segment on Monbaby, you can view it here: smart-baby-monitor-aims-to-prevent-infant-deaths


There were couple of minor errors in the video. The accelerometer is not 140 bit, rather 14 bit. To a non-technical mind 14 bits is not much, that is unless it’s 2 to the power of 14.

Another corrections, babies don’t get SIDS. SIDS is still an unknown condition and we cannot prevent it. What Monbaby aim is to help parents to monitor their babies for unsafe conditions, such as sleeping on a stomach.

Other from those two minor errors, the video was an awesome chance for us to spread the word about the Monbaby. Huge thanks to Douglas Kennedy and his team and to Fox News Channel!

 

 

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We are starting FCC testing

We just picked up a testing lab that would go take our Monbaby prototype PCB board through rigorous and thorough tests, so that we can achieve FCC certification.

As Monbaby talks to a smartphone over Bluetooth Low Energy, we want to make sure that the transmission from the device is under limits approved by the FCC. In the end of the certification we will get the FCC Declaration of Conformity or the FCC label.

The lab is in Baltimore Maryland.

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