Inductive Respiration (RIP)
Sensor Data Sheet

RIP 27042015

SPECIFICATIONS> Bandwidth: 0.075-1Hz> Operating Humidity: 5-95% (noncondensing)> Operating Temperature: 5-40ºC
FEATURES> Inductive sensing technology> Adjustable elastic chest strap> High sensitivity> High signal-to-noise ratio> Pre-conditioned analog output
RESEARCH APPLICATIONS> Thoracic or abdominal respiration analysis> Respiratory cycles measurement> Sleep studies> Biomedical research> Biofeedback> Psychophysiology
GENERAL DESCRIPTIONThis high-performance inductive respirationsensor has been specifically designed having
dynamic conditions in mind (e.g. effort trials,ambulatory sensing, etc.). The sensing
element is embedded in the chest strap
fabric, and spans its full length. Unlike ouraffordable piezoelectric (PZT) sensor (which
only measures the displacement in a
localized manner), the RIP option measures
the overall displacement of the thorax orabdomen, making it more immune to motioninduced artifacts. The elastic strap is can beadjusted in length, enabling the sensor to beapplied in different anatomies (e.g. maleand/or female) and body locations (e.g.
thorax and/or abdomen). Typical applications
include monitoring of respiratory rate,respiratory cycle regularity, relative amplitudeof the cycle, and others. When multiple
sensors are used simultaneously it enables
diaphragmatic versus thoracic breathingassessment (e.g. for biofeedback).

Fig. 1. The sensor element is placed along the full lengthof the chest strap for unrivalled performance.

Fig. 2. Typical raw respiration data (acq. with biosignals).

Fig. 3. Example of respiration sensor used on the chest.

PLUX – Wireless Biosignals, S.A.
Av. 5 de Outubro, n. 70 – 8.
1050-059 Lisbon, Portugal
plux@plux.info
http://biosignalsplux.com/REV A© 2015 PLUX

biosignalsplux products are intended for use in life science education and research applications; they are not
medical devices nor are they intended for medical diagnosis, cure, mitigation, treatment or prevention of disease. 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 thepossibility of such damages.

Piezoelectric Respiration (PZT)
Sensor Data Sheet

TRANSFER FUNCTION[-50%, 50%]
𝑅𝐼𝑃 % =

𝐴𝐷𝐶 1
− . 100%
2*2

𝑅𝐼𝑃 % – Displacement value in percentage (%) of full scale
𝐴𝐷𝐶 – Value sampled from the channel
1𝑛 – Number of bits of the channel

ORDERING GUIDE
Reference
RIP1
RIP1-A-S

Package Description
Inductive respiration (RIP) sensor in a standard configuration.
Inductive respiration (RIP) sensor built with custom cable length Aand custom sleeve color S; for standard physical characteristics inA or S use 0.
Examples:> RIP1-200-0: RIP sensor with a 200cm cable A and random sleeve color> RIP1-0-Yellow: RIP sensor with a standard cable size A and a yellow cable sleeve> RIP1-50-Red: Fully custom RIP sensor with a 50cm cable A and a red cable sleeve

1 The number of bits for each channel depends on the resolution of the Analog-to-Digital

Converter (ADC); in biosignalsplux the default is 16-bit resolution (𝑛 = 16), although 12-bit(𝑛 = 12) and 8-bit (𝑛 = 8) may also be found.

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