MSP-T6008-D medical
fiber-optic temperature system is developed for monitoring
the temperature of the lesions area of a human body. This
system is not subject to the interference of electromagnetic
environment such as the location within a CT scanner.
With the use of an optic-fiber to delivery and collect
modulated light, the high-quality optical signal can be
transmitted over a long distance to make sure a high-precision
measurement can be achieved remotely.
This temperature monitor system is capable to drive up
to 8 sensing probes simultaneously. The measured temperature
data can be collected through RS232 interface and restored
in a host PC computer.
This medical temperature monitoring
system consists of two major parts: the medical fiber-optic
temperature monitoring unit and the FBG based sensing
probe. The main functions of the unit are to supply
a light source to and demodulate the signal collected
from the sensing probes. The collected signal are then
analyzed and processed. The temperature values are displayed
on the panel of the unit or transmitted through data
transmission lines to a host PC. A small section of
a Fibre Bragg Grating is coated with specially selected
coating to form the temperature probe. The coating used
to protect the sensing grating section can withstand
up to 100C temperature.
Front view of the monitor
unit
Sensing probe with connected
fiber
Sensing probe
• The light weight and small size
of the FBG based sensing probe can be inserted in a needle,
then be used to monitor the temperature variation in human
tissue;
• Employing an optic fiber to transit and collect the signal
improve the system operational stability;
• The sensing probe is intrinsic immunity from electromagnetic
interference and especially suitable to be used in an environment
where a strong electromagnetic field distribution present;
• The temperature sensor system offers a high measured accuracy
with a good linearity over the operational range.
• The monitor unit can support up to 8 sensing probes which
can used easily replaced if one-time use is required.
Parameter
Value
Accuracy
±0.3℃
Resolution
0.1℃
Temperature range
30℃～50℃
One of the main applications is to monitor
the body tissue temperature during the cancer thermotherapy
process. Because the microwave heating technology is used
in the treatment, the sensing probe should be immune from
the present of the intense electromagnetic interference,
by which the traditional temperature sensor will be easily
affected. Since the size of the sensing probe is small,
the body tissue's injury caused by the probe will be small.
