Products / Inclinometer / Mems Inclinometer

FFT Inclinometer

By Vigor Technology

• Vigor Technology FFT
• Simultaneously measuring inclination and vibration value
• Tri-axis 0~±20g vibration detection
• Programmable filter, 11 rate settings
• Real-time FFT, 512 points
• Can inhibit vibration acceleration interference
• Patented real high accuracy inclination measuring
• Highest combined absolute accuracy ±0.01°@25℃

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  • Product info

    FFT inclinometer solves attitude detection which affect by strong vibration interfere, output stable & accurate roll/pitch tilt angle. This device made FFT vibration analysis on three-axis in-time, such as time domain & frequency domain signal analysis, real time data collection, etc. To improve the platform leveling efficient while motor/hydraulic device running, also suit for static /dynamic measuring.
    Most moving or rotating equipment (such as motor) will produce acceleration/vibration, this noise produced by vibration and movement, will disturb real inclination measuring. Due to this random vibration and vibra directions can not perpendicular to inclinometer sensitive axis, will produce larger cross-axis error. Especially inclinometer cross-axis sensitivity around 3%, the error should be very larger to about 5 degree or more.
    On the market, most inclinometer is based on MEMS capacitance acceleration principle. This product has higher sensitivity with vibration; so that it is difficult to perform high measurement accuracy with internal hardware/ software filtering technology. Also electrolyte principle tilt sensor can not avoid the influence from low frequency vibration noise. So should consider the influence of vibration to get higher accuracy tilt angle value in vibration environment.
    In order to ensure coincidence between inclination direction and vibration direction during measuring process, vigor adopts special assembly technology to realize very high axis alignment and orthogonal between tilt measuring axis and X/Y/Z vibration axis, to ensure vibration data has greatest confidential.
    FFT inclinometer combines vibration analysis function with advanced time domain and frequency domain signal processing, real time data collection& alarms and storage. Time domain signal processing includes a programmable binary filter and selectable windowing function. Frequency domain processing includes a 512-point, real-valued FFT for each axis, along with FFT averaging. FFT system offers users the ability to work ordering starting up FFT mode, auto FFT mode, ordering starting up time domain capture mode, real time mode, etc., meanwhile can configure vibration measurement bandwidth and alarm points.
    √ Tri-axis vibration range adjustable from 0g to ±1g/±5g/±10g/±20g, response frequency≤5 kHz
    √ Real-time sample rate 20.48kSPS, provide timing trigger and external trigger, programmable filter 11 rate settings
    √ FFT function, 512-point, real valued, all three axes (x, y, z), 3 windowing options: rectangular, Hanning, flat top
    √ Programmable alarms, 6 spectral bands, dual alarm settings (warning and failure), response time (adjustable)
    FFT inclinometer except output real-time original vibration acceleration and FFT data, furthermore has strong tilt measuring ability:
    √ ±0.02%FS
    √ ±0.005°Offset
    √ Combine with gyro module, realize static/dynamic angle measuring for low/rapid leveling
    √ Further confirmed that offset, repeatability, hysteresis, turn on repeatability etc. parameters which are important influence factors to unit total performance evaluation
    √ Internal enhanced advanced intelligent algorithms drastically reduce cross-axis error. upgrade real tilt angle measuring accuracy; abandoned the traditional incomplete understanding for tilt angle measurement precision concept
    √ Patent error calculation and test calibration method, greatly upgrades real tilt angle measuring accuracy and reliability
    √ Greatly reduce measuring errors when the real tilt direction not consistent to inclinometer sensitive direction
    √ Additional to short-circuit, transient voltage and transposition protection to adapt to industry environment
    √ User can set zero point, baud rate, local gravitational acceleration value, zero calibration, vibration suppression filter coefficients, ID address, refresh rate, etc.



    Railway track inspection instrument, Construction machinery, Mining machinery, Agricultural machinery, Train control, Test equipment, Movement or rotational vibration occasions

  • Ordering


    For example, if order a dual axis FFT inclinometer, with range ±30°, room temperature accuracy ±0.02°, -20~60℃ accuracy ±0.02°, output CAN2.0, 5 meters cable with plug,vibration function module, the model should be chosen as: SST302-30-G3-F5 -00-C1-D3 (5m)
    Other options (see table 4):
    Magnetic base——order number SST003-01-01

    Table 3 Accessories 
    Item Order Code Accessories name Function
    00 RS232 Directly angle output
    Data format: Baud rate:115200(adjustable), 8 data bits, 1 start bit,
    1 stop bit, none parity
    Refresh rate:5Hz, optional: 10Hz, 20Hz
    G1 RS485 output Isolated, Compatible with half-duplex or full-duplex communication;
    ±15kV ESD protection
    Compatible with ANSI/TIA/EIA-485-A-98 & ISO8482:1987(E)
    Comply with UL1577—2500V rms for 1min;
    Transmission rate up to 500 kbps, support max 256pcs node
    High common mode transient suppression ability>25kV/us;
    Support Modbus-RTU, sensor supply HEX or ASCII communication
    G2 RS422
    G3 CAN Compliance with ISO/DIS 11898, twisted-pair output
    Support CAN2.0A, CAN2.0B protocol
    Build-in high-speed photo isolators
    Support 15 baud rates from 5k to 1000Kbps
    Transmission distance: 10km Max
    G9 Ethernet 10/100M, Ethernet interface self-adaption
    AUTO MDI/MDIX available, use either cross-ruling or parallel cable
    Baud rate is adjustable in 300bps~230.4Kbps
    Kinds of operating model, TCP Server, TCP Client, UDP and Real COM driver, etc.
    Automatically connection after network disconnect
    Support DNS, satisfy the communication needs by domain name
    UDP mode support single or multiple machine communication
    POE power supply device available
    Cable/Plug C1 Standard plug
    with Cable
    Meet MIL-C-26482,Standard 2m cable,IP67 protection, heavy duty up to 30kg
    C6 Standard plug Meet to MIL-C-26482
    C12 Ethernet cable
    with pug
    Military class connector , standard 2m cable, RJ-45 port, IP67
    protection, heavy duty up to 30kg
    cable with plug
    Military class connector , standard 2m cable, CAN/CANOPEN special cable, DB-9 port, IP67 protection, heavy duty up to 30kg
    D1 Temperature drift Temperature compensation range 0~60℃,accuracy ±0.01°@≤±30°
    D2 Temperature drift Temperature compensation range 0~60℃, accuracy ±0.01°@>±30°
    D3 Temperature drift Temperature compensation range -20~60℃, accuracy ±0.02°@≤±30°
    D4 Temperature drift Temperature compensation range -20~60℃, accuracy ±0.02°@>±30°
    D5 Temperature drift Temperature compensation range -30~60℃, accuracy ±0.03°@≤±30°
    D6 Temperature drift Temperature compensation range -30~60℃, accuracy ±0.03°@>±30°
    D7 Temperature drift Temperature compensation range -40~65℃, accuracy ±0.05°@≤±30°
    D8 Temperature drift Temperature compensation range -40~65℃, accuracy ±0.05°@>±30°
    D9 Temperature drift Temperature compensation range-40~85℃, accuracy ±0.05°@≤±30°
    D10 Temperature drift Temperature compensation range -40~85℃, accuracy ±0.05°@>±30°
    Table 4 Options
    Item P/N Option name Function
    SST003-01-01 Magnetic base 50kg suction, permanent magnet, stainless steel materials
    SST003-01-04 Adjustable base with
    micrometer screw
    Three-points adjustment, resolution 0.001mm,
    stainless steel materials
    Power SST003-09-04 POE power supply 802.3af standard: PI(Power interface: PSE/PD network
    cable interface);Alternative A(1,2,3,6,singal line ) and
    Alternative B(4,5,7,8, free line)power type
    SST003-11-01 Test report for
    cross-axis error
    Accuracy test report under banking tilt, average 11 points of
    full range
    SST003-11-03 Test report for Allowed
    Installation misalignment
    Axis migration test report for vertical and axis of inclinometer, 3 angles of point
    SST003-11-04 Test report for response time and hysteresis The report for time response curve/ data and hysteresis
    SST003-11-05 Test report for vibration According to inclinometer’s standard vibration characteristic
    SST003-11-06 Test report for
    mechanical shock
    According to sensor`s standard shock characteristic
    SST003-11-07 Test report for
    temperature shock
    Test report of characteristics change under 10℃ /minute