Well hi! lister
Someone asking if he could modify the
photosensor.
I have some information on how it's work
this sensor so maybe help a little.
The air-conditioning temperature control
is affected by sunshine penetration photosensor.
It measures the sunlight falling
directly on the car's occupants.
How it work::
The sunlight impinges on a photodiode
through a filter and an optical element.The filter has the same effect as
sunglasses and prevents sublight from damaging the
photodiode.
The photodiode is a light-sensitive
semiconductor element. When it is not illuminated, only a small electric current
can flow through the diode.
When it is illuminated,the electric
current increases.
The stronger the light,the higher the
current.
To the control unit, an increase in
electric current indicated higher sunshine penetration.
It regulates the interior temperature
accordingly.
Diagonal sunlight
penetration:
Particularly sunlight incident on the
car's occupants diagonaly from the front,(i.e. directly.increases the feeling of
warmth)
The optical element deflects a large
proportion of diagonaly penetrating sunlight onto the
photodiode.
Cooling is increase to equalised the
effect to heat radiation on the body.
Vertical sunlight
penetration:
Vertically incident sunlight is screened
by the car's roof.
The optical element deflevts less light
onto the photodiode.
Cooling can be reduced as the car's
occupants are not directly exposed to haet radiation.
Julio,
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