Power quality differentiation in hazard detection systems
First Claim
Patent Images
1. A smoke, heat, and carbon monoxide detection system, comprising:
- a DC power node;
a power converter coupled to the DC power node and operative to provide a first signal at a first voltage level to a power bus;
at least one component coupled to the power bus and operative to consume power using the first signal at the first voltage level;
a low dropout regulator coupled to the power bus and operative to convert the first signal to a second signal at a second voltage level; and
a plurality of safety sensors coupled to the low dropout regulator and operative to consume power at the second voltage level, wherein the first voltage level is different than the second voltage level.
2 Assignments
0 Petitions
Accused Products
Abstract
Hazard detection systems according to embodiments described herein are operative to provide failsafe safety detection features and user interface features using circuit topology and power budgeting methods that minimize power consumption. The safety detection features can monitor environmental conditions (e.g., smoke, heat, humidity, carbon monoxide, carbon dioxide, radon, and other noxious gasses) in the vicinity of the hazard detection system associated and alarm occupants when an environmental condition exceeds a predetermined threshold.
19 Citations
16 Claims
-
1. A smoke, heat, and carbon monoxide detection system, comprising:
-
a DC power node; a power converter coupled to the DC power node and operative to provide a first signal at a first voltage level to a power bus; at least one component coupled to the power bus and operative to consume power using the first signal at the first voltage level; a low dropout regulator coupled to the power bus and operative to convert the first signal to a second signal at a second voltage level; and a plurality of safety sensors coupled to the low dropout regulator and operative to consume power at the second voltage level, wherein the first voltage level is different than the second voltage level. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
-
-
10. A smoke, heat, and carbon monoxide detection system, comprising:
-
a DC power node; a wireless communications module that requires power having a first set of characteristics; a plurality of hazard detectors that require power having a second set of characteristics, the plurality of hazard detectors comprising a smoke sensor and a carbon monoxide sensor; first power conversion circuitry coupled to the DC power node and operative to provide power having the first set of characteristics to the wireless communications module; and second power conversion circuitry coupled to the first power conversion circuitry and operative to provide power having the second set of characteristics to the plurality of hazard detectors, wherein the second set of characteristics includes a voltage ripple characteristic that is less than a voltage ripple characteristic of the first set of characteristics. - View Dependent Claims (11, 12, 13, 14, 15)
-
-
16. A hazard detection system, comprising:
-
a DC power source; a power converter coupled to the DC power source; a first power bus coupled to the DC power source; a second power bus coupled to the power converter; a smoke sensor comprising an optical sensor that is operable to be power gated ON and OFF and an optical source that is coupled to the first power bus and operable to be signal driven ON and OFF; power gating circuitry that selectively couples and de-couples the optical sensor to the second power bus; and control circuitry operative to; selectively power gate the optical sensor ON and OFF by controlling the power gating circuitry; and selectively signal the optical source ON and OFF.
-
Specification