State monitoring system
First Claim
1. A state monitoring system that monitors a state of an apparatus provided in a wind turbine, comprising:
- a wireless measuring unit, including a sensor, a first timer, a first memory for storing measured data obtained from the sensor and first time data measured by the first timer and associated with the stored measured data according to order of measurement, and a communication unit for transmitting the measured data obtained from the sensor to the data collection device; and
a data collection device, including a second timer and configured to use second time data measured by the second timer to perform synchronous processing that transmits a time measurement request requesting the first timer to measure time in synchronization with the second timer to the wireless measuring unit,wherein the data collection device is configured to send a request to the wireless measuring unit requesting retransmission of the measured data and including information that specifies a first time based on information from the second timer, when the data collection device determines that it has not received measured data from the wireless measuring unit based on information from the second timer.
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Accused Products
Abstract
Provided is a state monitoring system that monitors a state of an apparatus provided in a wind turbine, including a wireless measuring unit including a sensor provided to the apparatus, and a data collection. The wireless measuring unit includes a memory storing measured data obtained from the sensor, and a wireless communication unit transmitting the measured data obtained from the sensor to the data collection device. When the data collection device has not been able to receive the measured data from the wireless measuring unit, the data collection device requests the wireless measuring unit to retransmit the measured data.
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Citations
10 Claims
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1. A state monitoring system that monitors a state of an apparatus provided in a wind turbine, comprising:
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a wireless measuring unit, including a sensor, a first timer, a first memory for storing measured data obtained from the sensor and first time data measured by the first timer and associated with the stored measured data according to order of measurement, and a communication unit for transmitting the measured data obtained from the sensor to the data collection device; and a data collection device, including a second timer and configured to use second time data measured by the second timer to perform synchronous processing that transmits a time measurement request requesting the first timer to measure time in synchronization with the second timer to the wireless measuring unit, wherein the data collection device is configured to send a request to the wireless measuring unit requesting retransmission of the measured data and including information that specifies a first time based on information from the second timer, when the data collection device determines that it has not received measured data from the wireless measuring unit based on information from the second timer. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A state monitoring system that monitors a state of an apparatus provided in a wind turbine, comprising:
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a wireless measuring unit including a sensor for detecting the state, a first timer, a memory for storing measured data obtained from the sensor and first time data measured by the first timer and associated with the stored measured data according to order of measurement, and a wireless communication unit for communicating with the data collection device, and a controller configured to transmit a data group including a predetermined number of measured data of a plurality of measured data stored in the memory, through the wireless communication unit, when the wireless communication unit receives a request from the data collection device; and a data collection device, including a second timer and configured to use second time data measured by the second timer to perform synchronous processing that transmits a time measurement request requesting the first timer to measure time in synchronization with the second timer to the wireless measuring unit, wherein the data collection device is configured to send the request based on information from the second timer. - View Dependent Claims (8, 9, 10)
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Specification