Presence detector housing and mount
OwnerMark A. Beran, Farro Fattahiinventors
Life of this patent
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Abstract
Presence detecting apparatus and housing and mounts therefore are disclosed, the apparatus including control circuitry, an emitter array, detector array, and background compensation sensor mounted and housed to provide a safe and effective detection area characterized by substantially constant detection sensitivity over the defined detection area while avoiding undesired detection of objects present outside the detection area. The emitter array and detector array are mounted and housed so that the detector array is substantially isolated from transmission in the housing of selected electromagnetic signals from the emitter array.
Claims19
A housing apparatus for a presence detector, the presence detector including emitter means and receiver means to emit and detect, respectively, selected electromagnetic radiation, said housing apparatus comprising:
- mounting means in part defining a chamber for mounting the presence detector therein;
- filtering means mountable at one part of said mounting means for filtering the electromagnetic radiation, said filtering means including first and second portions;
- isolation means mountable between the emitter means and receiver means in said mounting means for dividing said chamber into first and second compartments, said isolation means including a compressible barrier portion and an adjustable compressing portion having first and second sections, a first part of said barrier portion being compressible between said sections so that a second part deforms to substantially seal said first compartment from said second compartment of said chamber against passage of the selected electromagnetic radiation therebetween;
- and
- bridging means mountable at said one part of said mounting means and made of material which is substantially opaque to the selected electromagnetic radiation, said bridging means for engaging said first and second portions of said filtering means and said isolation means.
A chamber divider for dividing a substantially enclosed chamber having chamber walls into first and second compartments, at least one of said compartments for housing a component capable of emitting selected electromagnetic radiation, said divider comprising:
- a deformable barrier;
- and
- compressing means for compressing a first part of said deformable barrier so that a second part of said barrier is urged toward the chamber walls thus dividing the chamber and substantially sealing the compartments at the chamber walls from passage therebetween of the selected electromagnetic radiation.
A housing and component mount for a presence detector, the presence detector including control circuitry and emitter means and detector means for emitting and detecting, respectively, selected electromagnetic radiation, said housing and component mount comprising:
- mounting means in part defining a chamber for mounting the control circuitry, emitter means and detector means therein, said mounting means having an opening from said chamber and directing means at said opening from said chamber for preselected direction of electromagnetic radiation emitted by the emitter means, said opening being spaced from the emitter means and detector means, said mounting means including a board defining a wall of said chamber for mounting the emitter means thereon at a selected distance from said directing means and having a feedback element of the presence detector mounted thereon at a position relative to said directing means and the emitter means so that said element receives both direct electromagnetic radiation from the emitter means and ambient light through said directing means;
- and
- divider means for dividing said chamber of said mounting means into first and second compartments having different ones of the emitter means and detector means therein.
Dependencies are inferred from the claim text.