Sensing system and sensor device
AssigneeSony Semiconductor Solutions Corporation
InventorRyoji Kadota
Life of this patent
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Abstract
To synchronize, in a system in which a plurality of devices perform measurement, measurement timings with each other with a simple configuration. A sensing system includes a plurality of sensor devices. The sensor devices each include a trigger sensor and a target sensor. In the sensor device, the trigger sensor measures a signal value of a trigger signal. Also, in the sensor device, the target sensor starts to measure a physical quantity when the signal value measured by the trigger sensor satisfies a predetermined condition.
Claims12
A sensing system, comprising:
- a plurality of sensor devices each including:
- a trigger sensor configured to measure a signal value of a trigger signal;
- and
- a target sensor configured to start to measure a physical quantity of a measurement target based on a predetermined condition being satisfied by the measured signal value,
- wherein the target sensor measures the physical quantity in synchronization with a sampling clock that has a predetermined frequency, and the trigger sensor measures the signal value in synchronization with a sampling clock that has a frequency higher than the predetermined frequency.
A sensor device, comprising:
- a trigger sensor configured to measure a signal value of a trigger signal;
- a target sensor configured to start to measure a physical quantity of a measurement target based on a predetermined condition being satisfied by the measured signal value;
- a timer configured to clock time data;
- and
- a time data processing unit configured to hold, as startup time data, the time data based on the predetermined condition being satisfied by the signal value, and generate sensor-use time data from a difference between the startup time data and the time data.
A sensing system, comprising:
- a plurality of sensor devices each including:
- a trigger sensor configured to measure a signal value of a trigger signal;
- a target sensor configured to start to measure a physical quantity of a measurement target based on a predetermined condition being satisfied by the measured signal value;
- and
- a timer configured to:
- start time measurement based on the predetermined condition being satisfied by the signal value measured by the trigger sensor;
- and
- correct time based on the signal value after the time measurement is started.
Dependencies are inferred from the claim text.