Remote monitoring
Remote monitoring and inspection of measurement devices, emergency equipment, parking spaces, and other items is accomplished by using a digital image sensor (e.g., a CMOS sensor) to capture a digital image containing information about the monitored item. A signal containing information about the digital image (e.g., data representing the captured digital image or data indicating the state of the captured digital image) is transmitted to a remote central station.
1. Apparatus for detection of presence of an obstruction blocking access to or viewing of a fire extinguisher, the apparatus comprising:
a digital image sensor positioned to face an access area to the fire extinguisher and configured to capture a digital image of the access area;
an image recognition module configured to recognize at least whether the access area is obstructed, thereby providing an obstructed state; and
communications circuitry configured to transmit to a remote central station a signal including information indicative of the obstructed state of the fire extinguisher provided by the captured digital image.
2. The apparatus of claim 1 wherein the digital image sensor is configured to periodically capture a digital image of the access area.
3. The apparatus of claim 1 wherein the access area includes an exit way.
4. The apparatus of claim 1 wherein the access area includes a piece of emergency equipment in addition to the fire extinguisher.
5. The apparatus of claim 1 wherein the digital image sensor is configured to capture a digital image of the access area in response to a change in a state of the fire extinguisher.
6. The apparatus of claim 5 wherein the change in a state of the fire extinguisher comprises a removal of the fire extinguisher from an installed position.
7. The apparatus of claim 5 wherein the access area comprises a fire alarm pull station.
8. The apparatus of claim 7 wherein change in a state of the fire extinguisher comprises an activation of the fire alarm pull station.
9. The apparatus of claim 1 wherein the access area further comprises a portable defibrillator.
10. The apparatus of claim 5 further comprising:
a network linking the communication circuitry and the remote central station.
11. The apparatus of claim 10 wherein the network comprises a wireless mesh network.
12. The apparatus of claim 1 wherein the digital image sensor includes a CMOS sensor.
13. The apparatus of claim 1 further comprising a second digital image sensor positioned to face a display of the fire extinguisher and configured to capture a second digital image of the display of the fire extinguisher, wherein the communications circuitry is further configured to transmit to a remote central station a second signal including information about the display.
14. The apparatus of claim 13 wherein the image recognition module is configured to recognize one of a plurality of predetermined states of the fire extinguisher from the second digital image.
15. The apparatus of claim 14 wherein the image recognition module is configured to recognized one of the plurality of predetermined states prior to transmission of the second signal to the remote central station.
16. The apparatus of claim 13 wherein the display includes a pressure gauge on a fire extinguisher.
17. The apparatus of claim 13 wherein the second digital image sensor is configured to periodically capture a digital image of the display.
18. The apparatus of claim 1 further comprising a second digital image sensor positioned to face an installed location of the fire extinguisher and configured to capture a second digital image of the installed location, wherein the communications circuitry is further configured to transmit to the remote central station a second signal including information about the second digital image.
19. The apparatus of claim 1 wherein the communication circuitry is configured to transmit a wireless signal to the remote central station.
20. The apparatus of claim 1 wherein the network comprises a wireless mesh network.
21. The apparatus of claim 17 wherein the network comprises an IEEE 802.15.4-compliant network.