Packaging of luminaire mounted microphones
The specification and drawings present packaging for integrating a microphone into an outdoor luminaire that provides high sensitivity and dynamic range together with being waterproof, resistant to impact and wind noise, environmentally resistant and unobtrusive to passers-by. Various embodiments describe packaging of outdoor luminaire mounted microphones to achieve waterproof and minimized unwanted noise performance, and other desirable features.
1. An outdoor luminaire, comprising:
an exterior housing comprising a wall being waterproof and comprising one or more holes, wherein material on an interior surface of the wall is thinned annularly around each of the one or more holes, where each hole is covered on an interior surface of the wall with a gas permeable and non-rigid membrane that is adhesively bonded to the thinned annular portion of the interior surface of the wall forming a waterproof seal, wherein the gas permeable and non-rigid membrane is waterproof, impervious to ultraviolet radiation, and substantially transparent to sound waves;
one or more microphones, each microphone located in a vicinity of and configured to receive a sound wave signal; and
a foam material surrounding each microphone to mechanically de-couple each microphone from the exterior housing and to protect each microphone from detecting unwanted outside noises.
2. The outdoor luminaire of claim 1 , wherein each microphone is mounted inside of the foam material.
3. The outdoor luminaire of claim 1 , wherein each microphone is separated from the gas permeable and non-rigid membrane by a predefined distance.
4. The outdoor luminaire of claim 3 , wherein the predefined distance is provided using a spacer.
5. The outdoor luminaire of claim 4 , wherein the spacer comprises one of the foam material and a further foam material.
6. The outdoor luminaire of claim 1 , wherein the gas permeable and non-rigid membrane comprises an expanded polytetrafluoroethylene (ePTFE).
7. The outdoor luminaire of claim 1 , wherein the unwanted outside noises include one or more of: an impact noise of falling rain drops, sleet or hail.
8. The outdoor luminaire of claim 1 , wherein the gas permeable and non-rigid membrane is configured to minimize reflected sound waves to avoid reverberation.
9. The outdoor luminaire of claim 1 , wherein an exterior surface of the wall of each hole is tapered, providing a smooth and continuous transition to an outer surface of the gas permeable and non-rigid membrane to reduce creation of the wind noise.
10. A sensor module comprising:
an exterior housing comprising a wall including one or more holes, wherein material on an interior surface of the wall is thinned annularly around each of the one or more holes, where one or more of the holes is covered on an interior surface of the wall with a substantially gas-permeable and non-rigid membrane that is adhesively bonded to the thinned annular portion of the interior surface of the wall, forming a waterproof seal, said substantially gas-permeable and non-rigid membrane being substantially waterproof, resistant to ultraviolet radiation, and substantially transparent to sound waves;
one or more microphones, each located proximate a corresponding hole of the one or more holes and configured to receive a sound wave through the corresponding hole; and
a foam material at least partially surrounding each of the one or more microphones to mechanically de-couple each microphone from the exterior housing.
11. The sensor module of claim 10 , wherein the sensor module is attachable to an outdoor luminaire.
12. The sensor module of claim 10 , wherein the each of the one or more microphones is mounted inside of the foam material.
13. The sensor module of claim 10 , wherein the foam material protects each microphone from detecting unwanted outside noises.
14. The sensor module of claim 10 , wherein the each of the one or more microphones is separated from the membrane by a predefined distance provided by using a spacer.
15. The sensor module of claim 10 , wherein the membrane comprises an expanded polytetrafluoroethylene (ePTFE).
16. The sensor module of claim 10 , wherein an exterior surface of the wall of each of the one or more holes is tapered for providing a smooth and continuous transition to an outer surface of the membrane in order to reduce creation of the wind noise.
17. A sensor module comprising:
an exterior housing comprising a wall including one or more holes, where material on an interior surface of the wall is thinned annularly around each of the one or more holes and wherein the one or more of the holes is covered on an interior surface of the wall with a substantially gas-permeable and non-rigid membrane that is bonded to the thinned interior surface of the wall forming a waterproof seal, said substantially gas-permeable and non-rigid membrane being substantially waterproof, resistant to ultraviolet radiation, and substantially transparent to sound waves;
one or more microphones, each located proximate a corresponding hole of the one or more holes and configured to receive a sound wave through the corresponding hole; and
a foam material at least partially surrounding each of the one or more microphones to mechanically de-couple each microphone from the exterior housing.
18. The sensor module of claim 17 , wherein the sensor module is attachable to an outdoor luminaire.
19. The sensor module of claim 17 , wherein an exterior surface of the wall of each of the one or more holes is tapered for providing a smooth and continuous transition to an outer surface of the membrane in order to reduce creation of the wind noise.