SENSING

Wind Turbine Monitoring System

Wind is a clean and renewable power source. Today, the most popular solution of wind power generation in the world is based on wind turbines. To ensure safe operation of these turbines, close monitoring of is an absolute necessary.A wind turbine monitoring system is responsible for monitoring the tower, blades, shaft, gear box, generator and overall conditions in generator compartment. This involves a variety of sensors e.g. accelerometers, encoders, temperature sensors, oil/liquid level sensors, particle counter, voltage, current and humidity sensors.

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Accelerometers are used to monitor vibration from main bearing, gear box, generator, blades and tower for the purpose of preventing damage arose by destructive vibration. Temperature sensors detect the temperature of generator and gear box to ensure equipments are working within a safe temperature range. Encoder is mounted on generator’s main bearing to monitor rotating speed of turbine. The monitoring of lubricant needs oil temperature sensor, particle counter sensor and oil level sensor to work together in gathering the temperature, quality and liquid level information of the lubricant so that unwanted conditions in gear box and turbine such as lubricant shortage, low-quality and overheated lubricant could be diagnosed before any damage. Voltage and current sensors are used to monitor generator’s output power as an output power higher than a certain threshold tends to damage the generator. Temperature and humidity sensors installed in generator compartment are used to monitor environmental conditions in compartment so as to protect parts from being damaged by inappropriate temperature and humidity.

In addition to various sensors, a wind turbine monitoring system has a signal processing unit and a communication interface. Signal processing unit is mostly a high-performance microprocessor or DSP, responsible for analyzing and processing data that is collected by sensors. This is then transmitted through a wireless network (e.g. Zigbee®) for data logging and telemetric purposes

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Optical rotary encoder is used to measure wind turbine speed
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Low G accelerometer
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Low G accelerometer
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Low G accelerometer
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Low G accelerometer
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Low G accelerometer
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Low G accelerometer
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Pt100 temperature sensor
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Pt100 temperature sensor
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Measures oil level
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Hall-effect current sensor or current transformer
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High-accuracy semiconductor temperature sensor
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High-accuracy semiconductor humidity sensor
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High performance MCU or DSP
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MCP9800DM-PCTL
MCP9800DM-PCTL Thermal Sensor Kit
Microchip
The MCP9800 Thermal Sensor PICtail™ Demo Board demonstrates how to interface the MCP9800 to a PICmicro(R) microcontroller using the PICkit™ 1 Flash Starter Kit as a platform.
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EK-H4 Humidity Evaluation Kit
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Sensirion
The evaluation kit EK-H4 combines an easy-to-use plug-and-play system for sensor evaluation with a data logging equipment for simultaneous recording of humidity and temperature.
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EK-H5 Humidity Evaluation Kit
EK-H5 Humidity Evaluation Kit
Sensirion
The evaluation kit EK-H5 is a very simple system to test and evaluate Sensirion's humidity and temperature sensors.
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EVAL-ADXL345Z-DB
Analog Devices
The ADXL345 is a small, thin, low power, 3-axis accelerometer with high resolution (13-bit) measurement at up to ±16 g
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