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Posted on March 11, 2011 by  & 

Versatile ultra-low power biomedical signal processor

The efforts of a Holst Centre and NXP collaboration were presented last month in the form of the CoolBioTM. This low power biomedical signal processor is designed to efficiently monitor essential body parameters during the patients' daily lives at home.
 
The solution utilizes wireless sensor nodes through intelligent body area networks (BANs) whilst keeping the key considerations of power consumption and wastage to a minimum. The ideal resolution is to decrease overall power consumption enough to enable the system to be powered by energy harvesting or a short-life micro-battery.
 
"Ultra low power dissipation is a critical requirement for ubiquitous deployment of Personal Health solutions" said Bart De Loore, VP New Business at NXP.
 
Parameters such as heart, muscle and brain activity are monitored by the flexible system, which meets the outlined requirements of future wearable biomedical sensor systems. The integrated chip is c-programmable plus voltage and performance scalable. It is able to support a frequency range of 1MHz up to 100MHz with an operating voltage from 0.4 to 1.2V. By processing and compressing gained data within the BAN system locally before wirelessly transmitting the data, adding motion artifact reduction and smart diagnosis, power consumption is reduced.
 
 
This latest multi-channel biomedical signal processor is based on the commercially available CoolFluxTM from NXP. To maintain consistent high performance whilst reducing power consumption, the CoolFluxTM was adapted to perform at lower voltages comparable to the intensity of operating frequencies. The CoolBioTM also includes assimilated clock and memory domains that were not present in the base model.
 
 
 
 
References: Holst Centre
 
Image source: Holst Centre
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