Murata SCA11H Istruzioni per l'installazione e il funzionamento
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Murata Electronics Oy SCA11H Doc.No. 2077
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APPLICATION NOTE
SCA11H BED SENSOR INSTALLATION GUIDE
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Murata Electronics Oy SCA11H Doc.No. 2077
www.murata.com Rev. 3
Table of Contents
1
SCA11H product content..................................................................................................3
2
SCA11H operation modes................................................................................................4
2.1
Configuration mode ......................................................................................................4
2.2
Local communication mode..........................................................................................4
2.3
Cloud communication mode.........................................................................................5
3
SCA11H user interface .....................................................................................................5
4
SCA11H installation..........................................................................................................6
4.1
Positioning SCA11H into the bed.................................................................................6
4.2
Setting SCA11H into configuration mode.....................................................................8
4.3
Configuration ................................................................................................................8
4.4
Calibration...................................................................................................................13
4.5
Completing configuration............................................................................................15
5
Testing the output of SCA11H.......................................................................................16
6
Care instructions and safety utilization........................................................................16
7
Declarations.....................................................................................................................16
8
Appendixes......................................................................................................................17
9
Change Control ...............................................................................................................20
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Murata Electronics Oy SCA11H Doc.No. 2077
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1 SCA11H product content
Figure 1. SCA11H-C01
BCG sensor node
Power adapter
o9V/500mA switching power supply with 2.1/5.5 mm plug.
oFour different power plugs are supported according to the table below.
Product type Note www.iec.ch/worldplugs
SCA11H-A01
AC-adapter type A
US, Canada, Mexico and Japan…
SCA11H-P01 AC-adapter type A
China
SCA11H-C01 AC-adapter type C
Europe, South America and Asia…
SCA11H-G01 AC-adapter type G
UK, Ireland, Malta, Malaysia,
Singapore…
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Murata Electronics Oy SCA11H Doc.No. 2077
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2 SCA11H operation modes
2.1 Configuration mode
In configuration mode SCA11H creates its own network.
Following configurations and settings can be made using configuration WEB page.
1. Communication – local vs cloud
2. BCG measurement related settings
3. Network settings
4. BCG-calibration
Figure 2. Configuration WEB page
2.2 Local communication mode
In local communication mode SCA11H connects to pre-defined WiFi network.
SCA11H sensor node works as TCP/IP-server and writes output data in ASCII-
format in the defined IP-address port 8080
Simple Service Discovery Protocol SSDP is used for device discovery.
Sensor node can be calibrated and maintained using the HTTP API according to
Product Specification 1424 SCA11H Hostless WLAN HTTP API Specification.
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Murata Electronics Oy SCA11H Doc.No. 2077
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2.3 Cloud communication mode
In cloud communication mode SCA11H connects to the pre-defined WiFi network and
sends data to pre-defined server.
Communication parameters can be set through the configuration mode.
SCA11H sensor node sends data to the server as HTTP POST message. HTPP
POST body contains XML-formatted BCG data according to Product Specification
1325 SCA11H cloud server interface specification.
Simple Service Discovery Protocol SSDP is used for device discovery.
Sensor node can be calibrated and maintained using the HTTP API according to
Product Specification 1424 SCA11H Hostless WLAN HTTP API Specification.
3 SCA11H user interface
After initialization with the attachment plate LEDs on the top indicate the following
functions:
1. Power (green)
Blinking: connecting to network
Static on: connected to network
2. Network (orange)
Flash: network traffic (transmission or reception)
3. Status (green)
Flash: BCG data transmission
After initialization without the attachment plate (approx. 10s) LEDs indicate the following
functions:
1. Power (green)
Blinking: configuration mode
2. Network (orange)
Flash: network traffic (transmission or reception)
3. Status (green)
Off
Figure 3. SCA11H User Interface
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Murata Electronics Oy SCA11H Doc.No. 2077
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4 SCA11H installation
4.1 Positioning SCA11H into the bed
Positioning of SCA11H is very important. Please note two main items:
1. Orientation of the SCA11H needs to be the same as printed on top of the
node (head to toes)
2. SCA11H measures the bed vibration caused by blood circulation and
therefore it needs to be positioned in a place most optimal to measure this
vibration.
3. If bed's vibration is prevented e.g. due to the bed touching the wall or due
to very rigid bed structure, there will be no vibration and thus no BCG
signal to measure. In this case the bed location or bed structure should be
reconsidered.
Figure 4 depicts possible positioning options for SCA11H.
4. Under the mattress pad. Do not place under a person but rather on the
side or edge of the mattress. The recommended distance to the person to
be measured is min 20 cm.
5. On the bed frame or
6. On the side of the bed
Figure 4. Position options for SCA11H
In addition the socket-outlet shall be installed near the equipment and shall be easily
accessible.
More examples for good positioning of SCA11H are shown in Figure 5.
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Murata Electronics Oy SCA11H Doc.No. 2077
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Figure 5. Examples of good SCA11H attachment positions
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Murata Electronics Oy SCA11H Doc.No. 2077
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4.2 Setting SCA11H into configuration mode
7. Ensure power is disconnected
8. Remove SCA11H from the attachment plate (attachment plate is the black
plate attached with magnet to actual SCA11H sensor node, please see
the figure below)
9. Plug in the power
10.Wait about 10 s until the green power led starts to blink with 1s interval
11.Attach SCA11H sensor node to the black attachment plate
12.After steps 1-5 SCA11H is ready for positioning and configuration.
Figure 6. SCA11H node without attachment plate
Flow chart for setting SCA11H into configuration mode is presented in Appendix 1.
4.3 Configuration
1. Connect the used configuration device (for example laptop) to SCA11H's
configuration network: muRata_CFG_XXXXXX using password:
24681012.
attachment plate
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Murata Electronics Oy SCA11H Doc.No. 2077
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Figure 7. Example SCA11H's configuration network.
2. Open the browser at page http://192.168.253.1
Figure 8. Start-up page
3. Select Advanced Bed Sensor Settings
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Murata Electronics Oy SCA11H Doc.No. 2077
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Figure 9. Advanced Bed Sensor Settings
4. Select “BCG Mode” for algorithm data output or “Data Logger Mode” for
raw data output.
5. Select “Normal” as measurement direction.
6. Click “Apply” if changes were made.
Remark: Do not modify calibration parameters manually without in-depth understanding!
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