Sensors

3-axis acceleration measurement
 

Our 3D accelerometer uses Micro Electro-Mechanical Systems (MEMS®) technology, and has been especially designed taking into account the requirements of applications where kinematics and motion measurements are required. Together with our biosignal acquisition hardware, this sensor can measure sub-milliG accelerations and provides the raw data of each axis as an independent quantity giving you full control.

• Type: MEMS
• Axis: 3
• Range: ±3.6G
• Bandwidth: 0-50Hz

Blood Pressure Reader (dual channel sensor for individual systolic & diastolic signals)
 

Features

• Systolic & diastolic blood pressure (in mmHg)
• Two independent channels
• Built-in LCD display
• Plug & play operation
• Range: 0- 300mmHg
• Accuracy: ±3mmHg
• Type: Wrist cuff
• Cuff Circumference: 135-195mm

Transmissive blood volume pulse sensor
 

Our Blood Volume Pulse (BVP) sensor is an optical, non-invasive sensor that measures cardiovascular dynamics by detecting changes in the arterial translucency. When the heart pumps blood the arteries become more opaque, allowing less light to pass from the emitter on the sensor through to the receiver. The BVP sensor has a plastic clip-on housing for placement on the finger, which houses the light emitter and detector, and also minimizes interferences from external light sources.

• Type: Transmittance
• Gain: 34
• Wavelength: 670nm
• Bandwidth: 0.02-2.1Hz

Cardiac activity measurement
 

Our low-noise ECG local differential triode configuration enables fast application and unobtrusive data acquisition (although custom electrode cable configurations are available). The state-of-the-art design of the analog frontend on this sensor is specifically targeted at analyzing minutiae in the data. Together with the Heart Rate Variability (HRV) plugin on our OpenSignals software, one can easily record and extract meaningful information.

• Gain: 1000
• Range: ±1.5mV (with VCC = 3V)
• Bandwidth: 0.5-100Hz
• Input Impedance: >100GOhm
• CMRR: 100dB

Cardiac activity measurement

Cardiac activity measurement

Sympathetic nervous system measurement
 

Our EDA sensor is capable of accurately measuring the skin activity with high sensitivity in a miniaturized form factor. The low-noise signal conditioning and amplification circuit design provides optimal performance in the detection of even the most feeble electrodermal skin response events.

• Range: 0-13uS
• Bandwidth: 0-3Hz
• Input Impedance: >1GOhm
• CMRR: 100dB

Brain activity measurement
 

Our electroencephalography (EEG) sensor has been especially designed for both classic and localized EEG measurement. When a cap is too intrusive, only a limited number of channels are needed, or you’d like to synchronously record EEG and non-EEG biosignals, this is the perfect solution. The bipolar configuration, with two measurement electrodes detects the electrical potentials in the specific scalp region with respect to a reference electrode, which should be placed in a region of low muscular activity.

• Gain: 40000
• Range: ±37.5uV (with VCC = 3V)
• Bandwidth: 0.8-49Hz
• Input Impedance: >100GOhm
• CMRR: 100dB

Muscle activity measurement
 

Our sensor is especially designed for high performance surface EMG data acquisition even in the most extreme conditions. The bipolar configuration is ideal for uncompromised low-noise data acquisition, and the raw data output provides medical-grade data enabling it to be used for advanced and highly accurate biomedical research.

• Gain: 1000
• Range: ±1.5mV (with VCC = 3V)
• Bandwidth: 25-500Hz
• Input Impedance: >100GOhm
• CMRR: 100dB

Finger FNIRS sensor

The fNIRS (functional near-infrared spectroscopy) sensor is an easy-to-use sensor which uses two emitting LEDs, one in the red region and the other in the infrared region of the spectrum, to measure the red and infrared light reflectance in the cortical tissue. It provides a non-intrusive and non-invasive method to estimate the local oxygen saturation level in the blood to derive information about the activity of the perfused tissue, for example, to measure and track the activity of a specific brain region by measuring variations in oxygen saturation levels. The reflected light of each one of these LEDs is absorbed by a photodiode and then this current is converted into a digital value that is sent via SPI. Additionally, the acquired sensor data can be used to extract heart rate information. This sensor has been developed in cooperation with the R&D company Charles River Analytics to provide a new miniaturized fNIRS sensor allowing acquisitions of high-quality data in brain activity-tracking applications while keeping the costs at a fraction of current systems’ costs.

• Adjustable current for each LED using OpenSignals (r)evolution or the API
• Pre-conditioned digital output
• High signal-to-noise ratio
• Magnetic binding for easy attachment to third-party accessories
• Ready-to-use form factor
• Accurate signal acquisitions when placed on the forehead

Persistent switch triggerable by the foot, for manual event annotation or starting offline acquisitions

Force sensitive resistor
 

From reaction time measurement to load distribution in shoe insoles, our thin film force sensors offer uncompromised performance in the most demanding applications. The low profile membrane and miniaturized signal conditioning circuitry are ideal for minimally intrusive setups. Multiple sensing area dimensions and measurement ranges are available.

• Range: up to 150Kg
• Response Time: <1.2ms
• Repeatability: ~±2.5% (of full scale)
• Drift: <7%

Sturdy unidimensional platform with 4 independent load cells for jump, leg press, and similar setups

This multipurpose force platform is intended to be used together with our biosignalsplux kits. Its versatile design enables a wide range of applications such as jump analysis, center of mass distribution, weight assessment, force production capacity, and others. Multiple configurations and measurement range options are available.

Highlights:

•       Type: Strain gauge
•       Range: 800Kg (other options available)    

•       4x load cell channels
•       1x summed force channel

CareSens II glucometer data reader
 

Features

• Glucose level (in mg/dL)
• Built-in LCD display
• Internal memory (up to 250 readings)
• 10 lancets (included)
• 10 test strips (included)
• Plug & play operation
• Type: Blood sample taken from fingertips, palms, forearms, thighs, 

Twin axis strain gage goniometer with flexible connecting beam for uncompromised range of motion
 

This twin-axis goniometer provides accurate data related with flexion/extension and ulnar/radial deviation. With two attachment points to the body and a flexible beam, it enables high-performance uncompromised operation even in dynamic scenarios, without limiting the motion of the monitored subjects. Multiple size options are available, enabling placement in segments ranging from a finger (e.g. intermediate – proximal phalanges) to a leg (e.g. lower part of the femur – upper part of the tibia).

• Axis: 2
• Range: ±90º
• Accuracy: ±2º
• Repeatability: ~1º

Handheld momentary switch for manual event annotation or starting offline acquistions.

Visible range light
 

A common need when working with biosignals is the synchronization of the recorded data with external sources (e.g. a computer screen for visual evoked potentials). If applied to the computer screen, our LUX sensor can be used to detect chromatic changes in the stimuli, hence providing a synchronization source. The LUX sensor can also be useful for optical synchronization with third-party devices (provided that the third-party device can trigger an LED), in applications where it is important to have electrical decoupling between devices.

• Range: 360-970nm
• Useful for optical marker detection
• Ideal for synchronization with a computer screen

Precision sensor for handgrip, traction, and other heavy duty force sensing applications
 

This single-axis load cell is particularly suitable for handgrip, traction/compression, and similar applications. Its sturdy design and accessories enable force measurement in many different settings. The plug & play design provides maximum flexibility for use with our biosignal acquisition kits.

• Type: Strain gauge
• Range: ±110Kg (other options available)

Documentation:

Respiration measurement using a piezoelectric element

Our piezoelectric respiration sensor is an entry-level affordable option for respiratory analysis in a wide range of applications. It has a localized sensing element that measures displacement variations induced by inhaling or exhaling. The elastic strap is provided with the sensor to secure it in place, and can be adjusted in length, enabling the sensor to be applied in different anatomies (e.g. male and/or female) and body locations (e.g. thorax and/or abdomen).

• Type: Piezoelectric film