Carbon monoxide and smoke detection apparatus
First Claim
Patent Images
1. A self-contained, combined, gas and smoke detector comprising:
- a gas sensor;
a smoke sensor;
a programmed control element coupled to both of the sensors;
a housing which defines an internal region for receiving the sensors and the control element wherein the housing is perforated with a first opening shaped as a fire; and
a removable protective planar element, covering at least a part of the gas sensor within the housing wherein the element is applied during manufacture and is removed once the detector has been placed into service.
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Abstract
A smoke sensor and a carbon monoxide sensor are integrated into a common detector housing. The smoke sensor is coupled to a smoke detector control integrated circuit which generates a binary output signal indicative of the presence of smoke. This signal is coupled to a programmed microprocessor in the detector housing. The carbon monoxide sensor is also coupled to the microprocessor. Outputs from the two sensors are processed substantially independently. In the presence of smoke, the smoke alarm is generated by the microprocessor. In the presence of sufficient levels of carbon monoxide, in the absence of smoke, a carbon monoxide alarm will be generated.
47 Citations
21 Claims
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1. A self-contained, combined, gas and smoke detector comprising:
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a gas sensor;
a smoke sensor;
a programmed control element coupled to both of the sensors;
a housing which defines an internal region for receiving the sensors and the control element wherein the housing is perforated with a first opening shaped as a fire; and
a removable protective planar element, covering at least a part of the gas sensor within the housing wherein the element is applied during manufacture and is removed once the detector has been placed into service. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An apparatus comprising:
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a gas sensor;
a smoke sensor;
control circuitry including a programmed processor coupled to the sensors, the control circuitry determining if a predetermined gas condition has been sensed, the control circuitry also determining if a predetermined smoke condition has been sensed wherein the processor stores at least first and second non-verbal alarm specifying horn patterns; and
an alarm energizable to produce the first pattern when the gas condition is present, and to produce the second pattern in the presence of the predetermined smoke condition. - View Dependent Claims (9)
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10. An ambient condition detector comprising:
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an ambient condition sensor;
a control circuit, coupled to the sensor, which includes a processor programmed with a plurality of executable instructions and at least two pre-stored, different alarm specifying, non-verbal output patterns both associated with the same sensed ambient condition wherein some of the instructions, in response to the sensed alarm condition, select one of the two pre-stored alarm specifying patterns for output. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A detector comprising:
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a housing which defines an internal region;
a user non-replacable biomemetic-type gas sensor carried in the region wherein during manufacture, the gas sensor is sealed with a user removable planar sealing tape which is located at least in part in the internal region;
a fire sensor carried in the region;
a programmed processor carried in the region, coupled to the sensors; and
instructions executable by the processor for automatically and periodically testing the sensors.
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Specification