Plux biosignalsplux Temperature User manual

biosignal acquisition tool-kit for advanced research applications
Temperature (TMP) Sensor User Manual

Temperature (TMP)
User Manual
PLUX –Wireless Biosignals, S.A.
Av. 5 de Outubro, n. 70 –2.
1050-059 Lisbon, Portugal
[email protected]
http://biosignalsplux.com/
v.1.0
© 2020 PLUX
This information is provided "as is," and we make no express or implied warranties whatsoever with respect to functionality, operability, use, fitness for a
particular purpose, or infringement of rights. We expressly disclaim any liability whatsoever for any direct, indirect, consequential, incidental or special
damages, including, without limitation, lost revenues, lost profits, losses resulting from business interruption or loss of data, regardless of the form of action or
legal theory under which the liability may be asserted, even if advised of the possibility of such damages.
ATTENTION
Please read this datasheet before
using your biosignalsplux sensor
The information contained in this document has been carefully checked and were made every effort
to ensure its quality. PLUX reserves the right to make changes and improvements to this manual and
products referenced at any time without notice.
The word Bluetooth and its logo are trademarks of Bluetooth SIG Inc. and any use of such marks is
under license. Other trademarks are the property of their respective own.
Please check your systems and sensors after receiving and before using it the first time to confirm if it
contains all the ordered sensors, accessories and other components. Contact our support via e-mail at
[email protected] if there are any variations from your original order.
For regulatory information, please see the Regulatory Disclaimer at the end of this document.

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TABLE OF CONTENTS
1. General Information............................................................................................................. 4
1.1. General Description ........................................................................................................... 4
1.2. Typical Unfiltered Sensor Output........................................................................................ 4
1.3. Sensor Specifications ......................................................................................................... 5
1.4. Features ............................................................................................................................ 5
1.5. Applications....................................................................................................................... 5
1.6. Transfer Function (Conversion Formula)............................................................................. 5
1.7. Physical Characteristics...................................................................................................... 6
2. Using the Temperature (TMP) Sensor with biosignalsplux & OpenSignals................................... 7
2.1. Connecting the sensor to biosignalsplux Systems................................................................ 7
2.1.1. biosignalsplux 4-Channel Hubs............................................................................................. 7
2.1.2. biosignalsplux 8-Channel Hubs............................................................................................. 7
2.1.3. biosignalsplux Solo & Single-Channel openBAN Devices ..................................................... 8
2.2. Configuring the Sensor in OpenSignals................................................................................ 8
2.2.1. OpenSignals (r)evolution (Windows, macOS, Linux) ............................................................ 8
3. Scientific Publications Using the Temperature Sensor.............................................................. 11
4. Safety & Maintenance ............................................................................................................ 12
4.1. Safety Instructions........................................................................................................... 12
4.2. Transportation and Storage.............................................................................................. 13
4.3. Cleaning .......................................................................................................................... 13
5. Ordering Guides, Regulatory & Legal Information.................................................................... 14
5.1. Ordering Guide................................................................................................................ 14
5.2. Guarantee of Quality & Warranty..................................................................................... 14
5.3. Warranty Voidance.......................................................................................................... 14
5.4. Contact & Support ........................................................................................................... 14
5.5. Regulatory Disclaimer...................................................................................................... 15

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1. General Information
1.1. General Description
The biosignalsplux Temperature (TMP) sensor is specifically developed for biosignal research
applications where it can be used to measure corporal or ambient temperatures. The sensor produces
an accurate analog output signal with short response times to temperature alterations.
The medical-grade PVC insulation of the Temperature sensor allows a safe use of this sensor even
when in direct skin contact. Additionally, the small form-factor of the sensor and small diameter of the
sensing element (~2mm) enable possibilities of local and accurate temperature measurements within
a 0°C and 50°C temperature range.
Figure 1: biosignalsplux TMP sensor
1.2. Typical Unfiltered Sensor Output
Figure 2 shows a typical unfiltered TMP sensor output. The raw digital sensor values received from the
biosignalsplux device ranged between 0 and 2n-1 (n=sampling resolution) were converted into the
original unit of measurement of this sensor (˚C) using the transfer function found in section Transfer
Function (Conversion Formula).
Figure 2: Typical unfiltered sensor output.

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1.3. Sensor Specifications
> Range:
0°C −50°C
> Response Time (Air):
seconds
> Type:
NTC thermistor
> Element Diameter:
1.90 mm
1.4. Features
>Medical-grade PVC insulation
> Unobtrusive & lightweight sensor
>Short response times
> Pre-conditioned analog output
>High signal-to-noise ratio
> Ready-to-use form factor
> Medical-grade raw data output
1.5. Applications
> Life sciences studies
> Biomedical research
> Human-Computer Interaction
> Robotics & Cibernetics
> Physiology Studies
> Psychophysiology
1.6. Transfer Function (Conversion Formula)
The analog sensor signals acquired with biosignalsplux devices are converted into digital values ranged
between 0 and 2n-1 (n=sampling resolution, usually 8-bit or 16-bit) and streamed in the raw digital
format.
In most applications, the original physical unit of the acquired TMP signal is preferred or required. The
raw digital sensor samples can be converted back into Celsius degrees (ºC) using the following
formulas:
󰇛󰇜

(1)
󰇛󰇜󰇛󰇜
(2)
󰇛󰇜󰇛󰇜
󰇛󰇜
(3)
󰇛󰇜
󰇛󰇜󰇟󰇛󰇛󰇜󰇜󰇠
(4)
󰇛󰇜󰇛󰇜
(5)
Valid sensor range: [, ]
with: 󰇛󰇜NTC output in Volt (V)
󰇛󰇜NTC output in millivolt (mV)
󰇛󰇜NTC output in Ohm ()
󰇛󰇜Temperature value in Kelvin (K)
󰇛󰇜Temperature value in degrees Celsius ()
 Value samples from the sensor/channel (digital value)
Sampling resolution (default: 16-bit resolution (n=16), although 12-bit and 8-
bit may also be found)

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 Operating voltage (3V)



Note that for the temperature calculation, ADC should be considered as:
 

1.7. Physical Characteristics
> W1 x L1 x H:
1.6cm x 2.2cm x 0.5cm
> W2:
1.0 ± 0.1cm
> W3:
1.90 ± 0.01mm
> L2:
8.25mm ± 0.01mm
> A1:
105.0 ± 0.5cm
> A2:
90.0 ± 0.5cm
> S:
0.3 ± 0.1cm
> Available sleeve colors:
White, Black, Blue, Green, Red, Yellow, Gray, and Brown
Figure 3: Physical characteristics of the standard TMP sensor.

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2. Using the Temperature (TMP) Sensor with biosignalsplux &
OpenSignals
2.1. Connecting the sensor to biosignalsplux Systems
2.1.1. biosignalsplux 4-Channel Hubs
The biosignalsplux TMP sensor is compatible with all 4 analog input channels of the 4-channel
biosignalsplux hub, but incompatible with the reference/ground port. Connect the sensor to an analog
input to use it with this device.
Figure 4: TMP compatible biosignalsplux channels (green checkmarks).
2.1.2. biosignalsplux 8-Channel Hubs
The biosignalsplux TMP sensor is compatible with all 8 analog input channels of the 8-channel
biosignalsplux hub, but incompatible with the reference/ground and digital I/O ports. Connect the
sensor to an analog input to use it with this device.
Figure 5: TMP compatible biosignalsplux channels (green checkmarks).

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2.1.3. biosignalsplux Solo & Single-Channel openBAN Devices
The biosignalsplux TMP sensor is compatible with the analog input channel of the biosignalsplux Solo
(openBAN) device. Connect the sensor to the analog input channel to use it with this device.
Figure 6: Connect the TMP to the analog input channel of the biosignalsplux Solo (openBAN).
2.2. Configuring the Sensor in OpenSignals
2.2.1. OpenSignals (r)evolution (Windows, macOS, Linux)
Note
Download OpenSignals (r)evolution here: https://biosignalsplux.com/index.php/software
Open the OpenSignals (r)evolution device manager to access and configure your biosignalsplux
device.
Figure 7: Access the OpenSignals (r)evolution device manager.

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Select the device you intend to use for acquisition by clicking on ENABLE button on the device panel in
the OpenSignals device manager. The device is activated for acquisition if the ENABLE button is blue.
Figure 8: Enabling the device for acquisition.
Click on the biosignalsplux logo to access the available settings. Select the channel your sensor is
connected to and select the TEMP from the dropdown menu highlighted in the next screenshot.
Figure 9: Set the channel type of the channel you have your TMP sensor connected to TEMP.
Activate the channel for acquisition by clicking on the circle next to the channel type (must be blue). If
not done before, follow the instruction available in section 2.1 Connecting the sensor to biosignalsplux
Systems to learn how to connect your sensor to your biosignalsplux device. Click on the record button
in the OpenSignals main interface whenever you’re ready for your acquisition.

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Figure 10: Start the acquisition whenever you’re ready.