SENSOR NETWORK USING PULSE WIDTH MODULATED SIGNALS
First Claim
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1. A device comprising:
- a bus interface to couple to a shared bus of a sensor network;
a sensor interface to couple to a sensor of the sensor network; and
a gated pulse width modulation circuit coupled to the bus interface and to the sensor interface, the gated pulse width modulation circuit configured to transmit, during a time slot determined based on a timing signal received via the shared bus, an analog pulse width modulated representation of a signal received from the sensor.
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Abstract
A device includes a bus interface to couple to a shared bus of a sensor network. The device also includes a sensor interface to couple to a sensor of the sensor network. The device further includes a gated pulse width modulation circuit coupled to the bus interface and to the sensor interface. The gated pulse width modulation circuit is configured to transmit, during a time slot determined based on a timing signal received via the shared bus, an analog pulse width modulated representation of a signal received from the sensor.
44 Citations
20 Claims
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1. A device comprising:
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a bus interface to couple to a shared bus of a sensor network; a sensor interface to couple to a sensor of the sensor network; and a gated pulse width modulation circuit coupled to the bus interface and to the sensor interface, the gated pulse width modulation circuit configured to transmit, during a time slot determined based on a timing signal received via the shared bus, an analog pulse width modulated representation of a signal received from the sensor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A sensor network comprising:
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multiple sensors; a bus; and multiple sensor interface devices, each sensor interface device of the multiple sensor interface devices coupling a corresponding sensor of the multiple sensors to the bus, wherein a first sensor interface device of the multiple sensor interface devices includes; a bus interface coupled to the bus; a sensor interface coupled to a first corresponding sensor of the multiple sensors; and a gated pulse width modulation circuit coupled to the bus interface and to the sensor interface, the gated pulse width modulation circuit configured to transmit, during a time slot determined based on a timing signal received via the bus, an analog pulse width modulated representation of a signal received from the first corresponding sensor. - View Dependent Claims (12, 13, 14, 15)
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16. A method comprising:
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receiving data from a sensor; receiving a timing signal via a bus; and transmitting an analog pulse width modulated representation of the data via the bus during a time slot determined based on the timing signal. - View Dependent Claims (17, 18, 19, 20)
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Specification