Wireless transfer of data from a detector
First Claim
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1. An electrical unit comprising:
- a housing which defines an internal region;
a source of radiant energy carried entirely within the housing wherein the source, in response to selected drive signals, emits radiant energy required to carry out an intra-housing function; and
control circuitry, carried within the housing, for coupling the selected drive signals to the source, and, for providing a different function, detectable outside of the housing by coupling a modulated drive signal to the source.
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Abstract
An ambient condition detector incorporates a common radiant energy source to carry out a first, sensing, function and a second, information transmitting function. The source can generate a beam to implement a fire sensing function. In addition, modulated radiant energy emitted from the source can be remotely sensed to determine detector status or internal parameter values. In an alternate embodiment, a source of radiant energy can be configured at an exterior periphery of the detector and information can be wirelessly transmitted therefrom using one or more analog modulation processes.
72 Citations
53 Claims
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1. An electrical unit comprising:
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a housing which defines an internal region;
a source of radiant energy carried entirely within the housing wherein the source, in response to selected drive signals, emits radiant energy required to carry out an intra-housing function; and
control circuitry, carried within the housing, for coupling the selected drive signals to the source, and, for providing a different function, detectable outside of the housing by coupling a modulated drive signal to the source. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 29, 30, 31)
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12. An ambient condition detector comprising:
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a sensing chamber;
radiant energy disposed to extend in part, across the chamber wherein the radiant energy exhibits a sensing mode and an information transmission mode.
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28. A detector comprising:
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a sensor carried by a housing;
a source of radiant energy carried by the housing;
a control circuit coupled to the source wherein the control circuitry energizes the source using an analog modulation process to transmit selected information from the housing.
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32. A monitoring system comprising:
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a communication medium;
a plurality of spaced apart ambient condition detectors coupled to the medium wherein each member of the plurality includes a common, internally located, radiant energy source for sensing an ambient condition, and, for sending information, via a second, different medium to a nearby location. - View Dependent Claims (33, 34, 35, 36, 37, 38, 39, 40, 41)
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42. A portable receiving unit for detecting modulated analog-type wireless transmissions from a remote device comprising:
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a sensor responsive to received wireless transmissions;
pattern recognition circuitry, coupled to the sensor, for discriminating at least one of a pulse amplitude modulated pattern, a pulse width modulated pattern, a pulse position modulated pattern, or a frequency modulated pattern transmitted from a selected device wherein parameters associated with at least two transmitted pulses are modulated in accordance with information from the device; and
demodulation circuitry for converting the transmitted parameters to displayable indicia of the information from the device. - View Dependent Claims (43, 44, 45, 47, 48, 49, 50, 51, 52, 53)
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46. A method of wirelessly transmitting information from an ambient condition detector in an analog modulated format comprising:
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wirelessly transmitting a start indicator of radiant energy from the respective detector; and
formatting and transmitting a plurality of pulses, analog, modulated in accordance with a parameter of the transmitting detector.
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Specification