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US 10,542,095 B2Granted
Synchronization measurement system, synchronization measurement method, controller, sensor unit, synchronous signal generation unit, synchronous signal transfer unit, and program
AssigneeSeiko Epson Corporation
InventorsTakao Katayama, Mikimoto Jin
Life of this patent
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Abstract
A measurement system includes a controller which is connected to a first network, and a plurality of sensor units of which is connected to the first network and is provided with a synchronous signal transmitter, and the controller includes a setting section that sets at least one of the plurality of sensor units as a first node which transmits a synchronous signal to the first network.
Claims15
A synchronization measurement system comprising:
- a controller which is connected to a first network;
- and
- a first plurality of sensor units of which is connected to the first network and is provided with a first synchronous signal transmitter, the first plurality of sensor units including first and second sensor units,
- wherein the controller includes an acquisition section that receives a first plurality of identifiers transmitted by the first plurality of sensor units,
- the controller includes a setting section that selects, based on the first plurality of identifiers, at least one of the first plurality of sensor units as a first node which transmits a first synchronous signal to the first network, and the first node includes the first sensor unit,
- wherein the setting section selects the second sensor unit of the first plurality of sensor units as a second node that is configured to perform measurement of measurement data, based on the first synchronous signal received from the first network, the second sensor unit is not set as the first node, among the first plurality of sensor units,
- wherein the setting section transmits measurement timing information to the second node,
- wherein the measurement timing information is a frequency division ratio for a transmission frequency of the first synchronous signal, and
- wherein the second node performs the measurement, or transmits the measurement data, based on the first synchronous signal, the measurement timing information, a number of receptions of the first synchronous signal, and the frequency division ratio.
6 more elements
A synchronization measurement method of a synchronization measurement system including a controller which is connected to a first network, and a plurality of sensor units of which is connected to the first network and is provided with a synchronous signal transmitter, the synchronization measurement method causing the controller to:
- receive a plurality of identifiers transmitted by the plurality of sensor units, the plurality of sensor units including first and second sensor units;
- select at least one of the plurality of sensor units as a first node which transmits a synchronous signal to the first network based on the plurality of identifiers, the first node including the first sensor unit;
- select the second sensor unit of the plurality of sensor units as a second node that is configured to perform measurement of measurement data, based on the synchronous signal received from the first network, the second sensor unit is not set as the first node, among the plurality of sensor units;
- transmit measurement timing information to the second node;
- and
- receive measurement data, based on the synchronous signal and the measurement timing information,
- wherein the measurement timing information is a frequency division ratio for a transmission frequency of the synchronous signal, and
- wherein the second node performs the measurement, or transmits the measurement data, based on the synchronous signal, the measurement timing information, a number of receptions of the synchronous signal, and the frequency division ratio.
5 more elements
A controller in a synchronization measurement system, the controller being connected to a first network, the controller comprising:
- an acquisition section that receives a plurality of identifiers transmitted by a plurality of sensor units including first and second sensor units;
- and
- a setting section that selects at least one of the plurality of sensor units of which is connected to the first network and is provided with a synchronous signal transmitter based on the plurality of identifiers, as a first node which transmits a synchronous signal to the first network,
- wherein the setting section selects the second sensor unit of the plurality of sensor units as a second node that is configured to perform measurement of measurement data, based on the synchronous signal received from the first network, the second sensor unit is not set as the first node, among the plurality of sensor units,
- wherein the setting section transmits measurement timing information to the second node,
- wherein the measurement timing information is a frequency division ratio for a transmission frequency of the synchronous signal, and
- wherein the second node performs the measurement, or transmits the measurement data, based on the synchronous signal, the measurement timing information, a number of receptions of the synchronous signal, and the frequency division ratio.
4 more elements
A computer program product of a controller for use in a synchronization measurement system, the computer program product encoded on a non-transitory computer-readable storage medium storing instructions that when executed by a processor of the controller cause the processor to perform steps comprising:
- receiving a plurality of identifiers transmitted by a plurality of sensor units of which is connected to a first network and is provided with a synchronous signal transmitter, the plurality of sensor units including first and second sensor units;
- selecting at least one of the plurality of sensor units, based on the plurality of identifiers, as a first node which transmits a synchronous signal to the first network, the first node including the first sensor unit;
- selecting the second sensor unit of the plurality of sensor units as a second node that is configured to perform measurement of measurement data, based on the synchronous signal received from the first network, the second sensor unit is not set as the first node, among the plurality of sensor units;
- and
- transmitting measurement timing information to the second node,
- wherein the controller is connected to the first network,
- wherein the measurement timing information is a frequency division ratio for a transmission frequency of the synchronous signal, and
- wherein the second node performs the measurement, or transmits the measurement data, based on the synchronous signal, the measurement timing information, a number of receptions of the synchronous signal, and the frequency division ratio.
5 more elements
A sensor unit in a synchronization measurement system, the sensor unit comprising:
- a plurality of sensors including first and second sensors, each of the plurality of sensors being configured to measure data, wherein the data corresponds to a predetermined physical quantity;
- a storage section that stores the measured data;
- a communication section that:
- receives measurement timing information through a first network;
- transmits an identifier of the sensor unit;
- and
- a controller that includes a setting section, a measurement data transmitter, and a synchronous signal transmitter,
- wherein the setting section selectively enables and disables the measurement data transmitter and the synchronous signal transmitter based on the identifier of the sensor unit,
- wherein the synchronous signal transmitter transmits a synchronous signal to the plurality of sensors including first and second sensors, through the communication section, in response to (i) being selected as a first node including the first sensor, by the controller, based on the identifier and (ii) being enabled by the setting section,
- wherein the setting section selects the second sensor of the plurality of sensors as a second node that is configured to perform measurement of measurement data, based on the synchronous signal received from the synchronous signal transmitter, the second sensor unit is not set as the first node, among the plurality of sensors,
- wherein the setting section transmits the measurement timing information to the second node,
- wherein the measurement data transmitter receives the synchronous signal, through the communication section, from the first node in response to not being selected as the first node by the controller,
- wherein the measurement timing information is a frequency division ratio for a transmission frequency of the synchronous signal, and
- wherein the second node performs the measurement, or transmits the measurement data through the communication section, based on the synchronous signal, the measurement timing information, a number of receptions of the synchronous signal, and the frequency division ratio.
11 more elements
Dependencies are inferred from the claim text.