Solar
entire wireless infrared detection technology and applications is to detect the
rise of technology development is another highlight. Solar energy using solar
powered radio on the radio, the signal via radio transmission, no longer apply
power lines and signal lines, truly all-wireless to work a large extent solved
the problem of construction and maintenance of trouble, it works with the
traditional wired right shot basically the same, but the detector power must be
reduced, otherwise the solar panel area is too large is not conducive to the
production and use.
According
to Ningbo Heng Bo Communication Equipment Co., Ltd. Marketing Manager Shi Jing,
solar infrared detectors built-in rechargeable lithium battery, power supply
part of the solar panel
power converter
, so that you can recycle solar energy,
without laying power cables. Generally an amorphous silicon solar panels do not
need direct sunlight can produce electricity, the installation environment
greatly expanded. In addition, solar panels supply capacity is much larger than
on the radio's power consumption, to ensure no light at night and the
continuous rainy days can also work as usual. And, on the radio built-in
wireless transmitter module, the alarm signal wireless transmission, in line
with national policies and regulations of the premise, as far as possible with
a high-power transmitter module to ensure that detectors on the radio between
the host and the effective wireless transmission distance. Thus, the appearance
of the solar infrared detector provides the user with different options.
Greatly
improve the detection sensitivity
The
detector probe tip lens directly affects the angle and distance. Conventional
infrared detector mainly reflecting the traditional single-beam PIR focusing
optical system and multi-beam type lens focusing optical system, these lenses
often produce infrared detection in the detection range problem of false
positives caused by uneven. And there are now based on the "uniform
infrared lens" techniques to solve the above problems. For example, the
use of semi-spherical lens greatly improved between the first focal length
changes caused by uneven sensitivity defect detection is a new lens.
Single-beam
reflector focusing
Power energy system
is the use of curved mirrors infrared radiation from
the target converge in the infrared sensor; detector realm in this way is
narrow viewing angle, usually in 5 ° or less, but the role of distance, up to
one hundred meters. The multi-beam multi-beam Fresnel lens was structure, this
lens is a special plastic molding, a number of small lenses arranged in an arc
on. Warning area in different directions were more single-beam state sector
composed of three-dimensional thermal region, constituting three-dimensional
alert. The Fresnel lens is divided into a few rows from top to bottom, above
the lens more, below small. Can be greater than the horizontal 90 °, the
vertical view angle can reach the maximum 90 °, the detection sensitivity is
significantly higher than the single beam has been reflected lens technology.
Nonetheless, the focal length of the Fresnel lens in the detection sensitivity
of the difference there is still the problem of uneven.
In
this regard, China occasion I have just said, the traditional Fresnel lens used
the "standard lens, wide angle lens to see distant part of the zoom
section to see near" and therefore installation height, detecting
distances great impact on the sensitivity and just below the detector are dead
easy, you need to install or configure with bracket under Windows protection,
while the use of hemispherical lens can effectively solve the problem of the
sensitivity of equilibrium, its superiority is mainly manifested in:
hemispherical lens structure detect objects at different distances focal length
equal, which will improve the traditional standard lens focal length changes
caused by the uneven sensitivity of the issue. In addition, a certain radius,
the same focal length spherical lens than the standard Fresnel lens covers a
larger area, the detection angle to be about 110 ° (rather than the
conventional detectors 90 °), and can be installed completely avoid the
detector just below the corner. Therefore, the use of hemispherical mirror
makes the detector coverage has a greater sensitivity and improved reliability.
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