Multi-spectral dosimeter for personal radiation exposure and physical activity tracking
Wave-band is a scientific instrument that measures personal radiation exposure and physical activity. It includes a wearable device, smartphone app, cloud database, and web portal.
The wearable device, called a dosimeter, records measurements of six bands of radiation and physical activity. The dosimeter interacts with a smartphone app that connects to a database, providing exposure data and metadata about users and their behavior.
Six spectral measurements include UVB, UVA, blue, green, red, and a broadband channel that spans visible and near-infrared (White/IR). Each spectral channel has implications for biology, as described below.
The UVA sensor covers a wide portion of the UV band, from 250 to 360nm. Although the measurement includes the UVB band, the UVA signal dominates the measurement in real-world conditions. The sensor is blind to visible light.
The spectral response of the UVB sensor is very close to the action spectra of erythema, DNA damage, and vitamin D synthesis. The performance of this sensor has been independently verified by the PMOD/WRC calibration laboratory, a world expert in UV measurements.
The spectral response of Wave-band's blue channel duplicates the melatonin suppression action spectrum and the vitamin A1 opsin template. It is also indicative of the blue light hazard function.
Wave-band's green channel accurately measures the photopic eye response, which describes the spectral sensitivity of the human eye.
A measurement of red light completes the visible spectrum. By combining red, green, and blue channels, we can estimate PAR, or photosynthetically active radiation.
An accelerometer counts steps and measures cadence and device orientation. More than just a pedometer, Wave-band quantifies physical activity and sleep quality, using metrics and algorithms from the GGIR scientific analysis software. This software is a well-respected tool for peer-reviewed physical activity studies.
The smartphone app provides interactive feedback, with features like a personal exposure meter, real-time irradiance display, and local UV forecasts. An easy-to-use graphical journal allows users to record their use of protective clothing and sunscreen. Compliance is sensed and encouraged, and location can be tracked using the phone's GPS.
Data, metadata, calibrations, settings, messaging, analyses, and reports are all coordinated through the cloud. Settings and messages are dynamically adjustable, so messages can be easily "fine-tuned" to optimize behavioral outcomes. In this way, Wave-band is equally useful for monitoring exposure and influencing behavior.
(introductory special, limited quantities)
$25 per year
per block of five additional wearables
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