MEMS Inclinometer

SSM25385-09 Wind turbine hub angle sensor

    . Axis: 1 or 2 axis
    . Range: ±60°
    . Accuracy: ±0.01°
    . Resolution: ±0.0025°

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Features

²  Long term online monitoring function of turbine hub angle

²  RS485 Modbus output

²  0.3°angle accuracy,0.05°resolution

²  Directly mounted on the hub without installing the shaft

²  Adapt to the maximum 30 RPM turbine blade speed

²  Built in MEMS gyroscope and accelerometer

²  High reliability, resistance to 2000g impact and 24g vibration

²  One time simple installation, life-long maintenance free

 

Application

Fan start-up power generation status identification, turbine brake system effectiveness identification, turbine operation safety monitoring

 

Descriptions

The wind turbine generates electricity by rotating the hub under the action of wind. With the long-term operation of the turbine, due to the loss and wear of mechanical parts, the original wind speed threshold of starting power generation may change, so as to judge the dynamic health of the unit. At the same time, under certain wind power, whether the wind turbine brake system is timely and effective is also an important factor of safety early warning. Therefore, the safety and health of the turbine can be effectively monitored by installing an independent hub angle sensor with ultra-low frequency characteristics (0.01Hz).

SSM25385-09 sensor has built-in three-axis accelerometer and three-axis gyroscope. Through advanced data processing method, it can effectively eliminate the influence of turbine vibration, gyroscope drift and turbine yaw under long-term continuous operation, and output stable and reliable speed data with a refresh rate of 200Hz. SSM25385-09 adopts MEMS (micro electro mechanical) technology and has no moving parts. It can withstand 20000 g instantaneous impact and maximum 24 g vibration. Its adaptability to the environment is much better than that of the encoder based on photoelectric principle.

At the same time, the sensor has no rotating shaft and can be installed in any position of the inner cavity of the wheel hub, or horizontally or vertically.

PIN definition and Dimensions(mm)



 

PIN

RS485

1

Power +

2

Power GND

3

RS485-A

4

RS485-B

5

Signal GND

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Performances

 

Mechanical

Protection

IP67

Dimensions

81×54×28.5mm

Housing material of the sensor

aluminium alloy

Weight

300g

Electrical

Power supply

9~36VDC

Power consumption

80mA@24VDC

Interface

RS485 Modbus

Connecting cable

M12-5 core

Performance

Measuring principle

MEMS, three-axis accelerometer and three-axis gyroscope

Measuring range

0~360°,continuous,no-limited

Allowable hub speed

0~30 rpm/min

Resolution

0.05°

Accuracy

±0.3°

Frequency range

0.01~50Hz

Data refresh rate

≤200Hz,adjustable

Environmental

Working temperature

-40~70℃

Working humidity

0~100%RH

Altitude

<5000m

Reliability

Storage temperature

-40~85℃

Drop

3m Fall to the concrete floor(Exclude antenna and connector)

Vibration

2grms,5~30Hz,Half sine

EMC

Electrostatic discharge immunity

Surge immunity

Electromagnetic radiation immunity

DC power supply test

 

Ordering information


Product   name

Model

Wind turbine hub angle sensor

SSM25385-09

Cable

2m cable(could   be customized),include plug