Robust high speed sensor interface for remote sensors
First Claim
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1. A system, comprising:
- a sensor bus;
an electronic control unit (ECU) coupleable to the sensor bus and configured to generate a synchronization signal, wherein the ECU is configured to output the synchronization signal to the sensor bus; and
one or more sensors coupleable to the sensor bus, wherein at least one sensor of the one or more sensors is configured to acquire respective sensor data in response to the synchronization signal and to output the a digital representation of the acquired sensor data in a respective frame to the sensor bus with a respective predetermined latency relative to an acquisition of the respective sensor data, the frame comprising a synchronization bit and at least one resynchronization bit, the at least one resynchronization bit being transmitted between a first data block of the frame and a second data block of the frame, wherein, when the one or more sensors is two or more sensors, each sensor of the two or more sensors other than a first sensor of the two or more sensors is configured to output the respective frame of that sensor immediately after the respective frame of another sensor of the two or more sensors.
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Abstract
Systems, methods, and apparatuses are discussed that enable robust, high-speed communication of sensor data. One example system includes a sensor bus, an electronic control unit (ECU), and one or more sensors. The ECU is coupleable to the sensor bus and configured to generate a synchronization signal, and is configured to output the synchronization signal to the sensor bus. The one or more sensors are also coupleable to the sensor bus, and at least one sensor of the one or more sensors is configured to sample sensor data in response to the synchronization signal and to output the sampled sensor data to the sensor bus.
65 Citations
21 Claims
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1. A system, comprising:
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a sensor bus; an electronic control unit (ECU) coupleable to the sensor bus and configured to generate a synchronization signal, wherein the ECU is configured to output the synchronization signal to the sensor bus; and one or more sensors coupleable to the sensor bus, wherein at least one sensor of the one or more sensors is configured to acquire respective sensor data in response to the synchronization signal and to output the a digital representation of the acquired sensor data in a respective frame to the sensor bus with a respective predetermined latency relative to an acquisition of the respective sensor data, the frame comprising a synchronization bit and at least one resynchronization bit, the at least one resynchronization bit being transmitted between a first data block of the frame and a second data block of the frame, wherein, when the one or more sensors is two or more sensors, each sensor of the two or more sensors other than a first sensor of the two or more sensors is configured to output the respective frame of that sensor immediately after the respective frame of another sensor of the two or more sensors. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A sensor, comprising:
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a differential transceiver coupleable to a sensor bus, wherein the differential transceiver is configured to receive a synchronization signal; and a sensor element configured to acquire sensor data in response to the synchronization signal, wherein the differential transceiver is further configured to transmit a digital representation of the acquired sensor data in a frame to the sensor bus with a predetermined latency relative to an acquisition of the sensor data, the frame comprising a synchronization bit and at least one resynchronization bit, the at least one resynchronization bit being transmitted between a first data block of the frame and a second data block of the frame. - View Dependent Claims (15, 16, 17)
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18. A system, comprising:
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means for communication; means for controlling coupleable to the means for communication and configured to generate a synchronization signal, wherein the means for controlling is configured to output the synchronization signal to the means for communication; and one or more means for sensing coupled to the means for communication, wherein at least one means for sensing is configured to acquire sensor data in response to the synchronization signal and to output a digital representation of the acquired sensor data in a respective frame to the means for communication with a respective predefined latency relative to an acquisition of the sensor data, the frame comprising a synchronization bit and at least one resynchronization bit, the at least one resynchronization bit being transmitted between a first data block of the frame and a second data block of the frame, wherein, when the one or more means for sensing is two or more means for sensing, each means for sensing of the two or more means for sensing other than a first means for sensing of the two or more means for sensing is configured to output the respective frame of that means for sensing immediately after the respective frame of another means for sensing of the two or more means for sensing. - View Dependent Claims (19, 20, 21)
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Specification