Reflective switch input surface
Example embodiments of a reflective switch and methods for preventing inadvertent actuation of the reflective switch are disclosed. Exemplary embodiments of the reflective switch comprise a plurality of photo emitters that emit light through a translucent zone and a plurality of photo detectors that detect light rays that are reflected back through the translucent zone by an operator input. Upon detecting reflected light rays, the photo detectors send reflective signals to a controller. The controller then monitors whether the unique addresses of the photo detectors are increasing or decreasing and whether the addresses have increased or decreased to a predetermined threshold to merit a change in switch state. An indicia may be configured to notify an operator that a new switch state has been achieved.
1. A reflective switch, comprising:
a panel having a translucent zone;
a touch surface extending perpendicularly from the panel adjacent the translucent zone, whereby fingers of an operator can be quickly located in a correct position to change a switch state of the reflective switch;
a plurality of photo emitters arranged along and below the translucent zone and oriented to emit light rays along the touch surface;
a plurality of photo detectors each configured to detect light emitted from the photo emitter and reflected by the fingers of an operator located in proximity to the touch surface, each photo detector having a unique address;
a controller in communication with each of said plurality of photo detectors, said controller configured to receive a reflective signal generated when one of said plurality of photo detectors detects a reflective input, and
said controller configured to monitor whether said unique addresses have increased or decreased to a predetermined threshold to change a switch state of said reflective switch.
2. The reflective switch of claim 1 , wherein at least two reflective inputs must be detected by at least two of said plurality of photo detectors before said controller monitors whether said unique addresses have increased or decreased to said predetermined threshold to change said switch state of said reflective switch.
3. The reflective switch of claim 1 , wherein at least one reflective input must be detected by one of said plurality of photo detectors at an initial reflective point for a predetermined period of time before said controller monitors whether said unique addresses have increased or decreased to said predetermined threshold to change said switch state of said reflective switch.
4. The reflective switch of claim 1 , wherein after said controller monitors whether said unique addresses have increased or decreased to said predetermined threshold to change said switch state of said reflective switch, at least one of said plurality of photo detectors must detect at least one reflective input at an end reflective point for a predetermined period of time before said switch state of said reflective switch is changed.
5. The reflective switch of claim 1 , wherein at least one of said plurality of photo detectors must detect at least one reflective input at an initial reflective point for a predetermined period of time before said controller monitors whether said unique addresses have increased or decreased to a predetermined threshold to change said switch state of said reflective switch, and after said controller monitors whether said unique addresses have increased or decreased to a predetermined threshold to change said switch state of said reflective switch, at least one of said plurality of photo detectors must detect at least one reflective input at an end reflective point for a predetermined period of time before said switch state of said reflective switch is changed.
6. The reflective switch of claim 1 , wherein an indicia indicates a new switch state has been achieved when said unique addresses have increased or decreased to a predetermined threshold to change said switch state of said reflective switch.
7. The reflective switch of claim 1 , wherein a tactical feedback motor indicates a new switch state has been achieved when said unique addresses have increased or decreased to a predetermined threshold to change said switch state of said reflective switch.
8. A method for changing the switch state of a reflective switch while avoiding inadvertent actuation of said reflective switch, said method comprising the steps of:
providing a reflective switch in accordance with claim 1 ,
triggering a plurality of the photo emitters to each emit light rays;
detecting at least one reflective input, a plurality of photo detectors each being configured to detect said reflective input, each of said plurality of photo detectors having a unique address;
receiving a reflective signal at a controller based upon said reflective input; and
monitoring whether said unique addresses have increased or decreased to a predetermined threshold to change a switch state of said reflective switch.
9. The method of claim 8 , wherein at least two reflective inputs must be detected before monitoring whether said unique addresses have increased or decreased to a predetermined threshold to change said switch state of said reflective switch.
10. The method of claim 8 , wherein said at least one reflective input must be detected at an initial reflective point for a predetermined period of time before monitoring whether said unique addresses have increased or decreased to a predetermined threshold to change said switch state of said reflective switch.
11. The method of claim 8 , wherein after monitoring whether said unique addresses have increased or decreased to a predetermined threshold to change said switch state of said reflective switch, at least one of said plurality of photo detectors must detect at least one reflective input at an end reflective point for a predetermined period of time before said switch state is changed.
12. The method of claim 8 , wherein at least one of said plurality of photo detectors must detect at least one reflective input at an initial reflective point for a predetermined period of time before monitoring whether said unique addresses have increased or decreased to a predetermined threshold to change said switch state of said reflective switch, and after monitoring whether said unique addresses have increased or decreased to a predetermined threshold to change said switch state of said reflective switch, at least one of said plurality of photo detectors must detect at least one reflective input at an end reflective point for a predetermined period of time before said switch state is changed.
13. A reflective switch, comprising:
a panel having a translucent zone;
a touch surface extending perpendicularly from the panel adjacent the translucent zone, whereby fingers of an operator can be quickly located in a correct position to change a switch state of the reflective switch;
a plurality of photo emitters arranged along and below the translucent zone and oriented to emit light rays along the touch surface;
at least one photo emitter, said photo emitter configured to emit light rays;
a plurality of photo detectors, each of said plurality of photo detectors configured to detect light emitted from the photo emitter and reflected by the fingers of an operator located in proximity to the touch surface, and each of said plurality of photo detectors having a unique address;
at least one controller configured to receive at least one reflective signal based upon said reflective input; and
said controller configured to monitor whether said unique addresses have increased or decreased to a predetermined threshold to change a switch state of said reflective switch.
14. The reflective switch of claim 13 , wherein at least two reflective inputs must be detected by at least two of said plurality of photo detectors before said controller monitors whether said unique addresses have increased or decreased to a predetermined threshold to change said switch state of said reflective switch.
15. The reflective switch of claim 13 , wherein at least one reflective input must be detected by at least one of said plurality of photo detectors at an initial reflective point for a predetermined period of time before said controller monitors whether said unique addresses have increased or decreased to a predetermined threshold to change said switch state of said reflective switch.
16. The reflective switch of claim 13 , wherein after said controller monitors whether said unique addresses have increased or decreased to a predetermined threshold to change said switch state of said reflective switch, at least one of said plurality of photo detectors must detect at least one reflective input at an end reflective point for a predetermined period of time before said switch state is changed.
17. The reflective switch of claim 13 , wherein at least one reflective input must be detected by at least one of said plurality of photo detectors at an initial reflective point for a predetermined period of time before said controller monitors whether said unique addresses have increased or decreased to a predetermined threshold to change said switch state of said reflective switch, and after said controller monitors whether said unique addresses have increased or decreased to a predetermined threshold to change said switch state of said reflective switch, at least one of said plurality of photo detectors must detect at least one reflective input at an end reflective point for a predetermined period of time before said switch state is changed.
18. The reflective switch of claim 13 , further comprising a panel, a translucent zone, and a touch surface, said touch surface extending axially from said paneling and said translucent zone being disposed about at least a portion of a base of said touch surface, said translucent zone forming a contiguous surface with said paneling.
19. The reflective switch of claim 13 , wherein an indicia indicates a new switch state has been achieved when said unique addresses have increased or decreased to a predetermined threshold to change said switch state of said reflective switch.
20. The reflective switch of claim 13 , wherein a tactical feedback motor indicates a new switch state has been achieved when said unique addresses have increased or decreased to a predetermined threshold to change said switch state of said reflective switch.