Passive infrared sensor self test with known heat source
First Claim
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1. A method comprising:
- receiving a signal from a sensor indicating that a device is not mounted properly;
emitting radiation from an emission component arranged in a single housing of the device in response to the signal;
capturing infrared radiation at a capture component arranged in the single housing of the device;
comparing a characteristic of the captured infrared radiation to a test characteristic; and
determining the capture component is not operating properly when the characteristic of the captured infrared radiation differs from the test characteristic by greater than a threshold quantity.
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Abstract
A passive infrared sensor having a radiation capture component may be housed within a sensor device. The device may also house radiation emission components, such as light emitting diodes, in proximity to the capture component. Electronic circuitry within the device may generate a signal that causes the emission components to emit radiation that includes wavelengths in the infrared spectrum. The infrared radiation may be captured at the capture component. Characteristics of a signal generated by the capture component may be compared to test characteristics. Based on this comparison, it may be determined that the passive infrared sensor is not operating properly.
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Citations
20 Claims
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1. A method comprising:
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receiving a signal from a sensor indicating that a device is not mounted properly; emitting radiation from an emission component arranged in a single housing of the device in response to the signal; capturing infrared radiation at a capture component arranged in the single housing of the device; comparing a characteristic of the captured infrared radiation to a test characteristic; and determining the capture component is not operating properly when the characteristic of the captured infrared radiation differs from the test characteristic by greater than a threshold quantity. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A system comprising:
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a device comprising a radiation emission component arranged in a single housing of the device and a radiation capture component arranged in the single housing of the device; and a processor in communication with the device and configured to execute instructions comprising; receiving a signal from a sensor indicating that the device is not mounted properly; emitting radiation from the emission component in response to the signal; capturing infrared radiation at the capture component; comparing a characteristic of the captured infrared radiation to a test characteristic; determining the capture component is not operating properly when the characteristic of the captured infrared radiation differs from the test characteristic by greater than a threshold quantity; and determining a status of the device based on determining the capture component is not operating properly. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
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18. A non-transitory computer readable medium storing instructions comprising:
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detecting a device is not properly mounted; in response to detecting the device is not properly mounted, emitting radiation from an emission component arranged in a single housing of the device; capturing infrared radiation at a capture component arranged in the single housing of the device; comparing a characteristic of the captured infrared radiation to a test characteristic; and determining the capture component is not operating properly when the characteristic of the captured infrared radiation differs from the test characteristic by greater than a threshold quantity. - View Dependent Claims (19, 20)
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Specification