Vibration Measurement
/ Data Handling
ZIN Technologies offers a wide variety of vibration measurement
data handling/mining and control assessment products both for space
flight hardware/missions and industrial clients. Utilizing ZIN Technologies
multi-year experience in developing, fabricating and operating NASA's
microgravity acceleration measurement hardware we have developed a
number of unique data mining tools that can be utilized to extract
acceleration measurement time and frequency domain parameters. The
following is a brief summary of the standard data product tools available;
our data product tools are highly customizable for unique requirements.
- Acceleration versus Time-transient, quasi-steady, vibratory
- Interval Min/Max Acceleration versus Time-vibratory,
quasi-steady
- Interval Average Acceleration versus Time-Vibratory,
quasi-steady
- Interval RMS Acceleration versus Time-Vibratory
- Power Spectral Density (PSD) versus Frequency-vibratory
- Spectrogram (PSD versus Frequency versus time)-vibratory
- Cumulative RMS Acceleration versus Frequency-vibratory
- Frequency Band(s) RMS Acceleration versus Time-vibratory
- RMS Acceleration versus One-third octave bands-vibratory
- Principal Component Spectral Analysis (PCSA)-vibratory
Real-time
data/vibration measurement analysis systems have been developed
as well and can be configured for maintenance/industrial control
systems.
Vibration Control Analysis Products
A number of vibration control analysis and design products
have been developed for the prediction of disturbance levels
and design specifications. These analysis tools estimate disturbance
levels from disturbance sources on highly sensitive space
flight hardware to critical locations of science to critical
locations of science instrumentation or sensitive hardware.
These developed tools are available based on standard FEM
techniques that can be utilized to analyze and construct design
solutions for industrial and NVH problems. Active control
and standard passive vibration isolation techniques can be
specified and analyzed to develop system specifications for
dynamic systems design and fabrication.
Vibration Measurement Sensors
Triaxial Sensor Head (TSH)
The TSH is a triaxial accelerometer sensor designed to measure
the general vibratory environment
- 3 Orthogonal pendulous mass force-balance accelerometers
in each TSH head
- Selectable bandwidth from DC up to 200 Hz, can be changed
during operation
- Resolution of <1.0 mg
- Small volume: 2.9" x 2.9" x 2.8"
- Low weight: ~1.1 lbs
- Low power draw: 1.65 W @ ±15VDC
The TSH can be used connected to a laptop, desktop, or embedded
control computer.
- RS422 serial interface Operating/control software can
reside on any computer system
- Most computers can command and control the TSH
- Connect TSH, add power, and install software
- Easy to use where space is a premium
- Can synchronize multiple sensor data streams
The TSH is designed to high resolution measurements
- Honeywell Q-Flex accelerometers are used
- Each sensor has dedicated signal conditioning and filter
circuitry
- 24-bit delta-sigma analog to digital converters for low
noise and large dynamic range
- Selectable bandwidth up to 200 Hz
- Custom printed circuit boards
- 8051-based microcontroller
The TSH is housed in a rugged enclosure
- 6061-T6 custom housing for strength and orthogonality
- Three mounting tabs
- Optional hermetically sealed enclosure for extreme environments
Triaxial
Sensor Head - Ethernet
The TSH-ES is similar to the TSH, but has a Ethernet interface.
The TSH-ES
- 3 Orthogonal pendulous mass force-balance accelerometers
in each TSH head
- Selectable bandwidth from DC up to 200 Hz, can be changed
during operation
- Resolution of <1.0 mg
- Small volume: 2.9" x 2.9" x 2.8"
- Low weight: ~1.1 lbs
- Low power draw: 3W @ ±15VDC
The Triaxial Sensor Head - Ethernet (TSH-ES) is a triaxial
accelerometer sensor designed to measure the general
vibratory environment
- Measures vibratory environment
w/ selectable maximum sampling Rate from 7.8Hz to 1000Hz
(Bandwidth from 0.01 to 375Hz)
- 3 Orthogonal pendulous mass force-balance accelerometers
- Each axis is digitized using 24 bit Sigma-Delta Converter
- Each axis has a dedicated programmable gain amplifier
- Unit Self-Initializes, does not require RTS or external
controller to record data.
The TSH can be used connected to a laptop, desktop, or
embedded control computer
- Ethernet interface
- Operating/control software can reside on any computer
system
- Most computers can command and control the TSH
- Connect TSH-ES, add power, and install software
- Easy to use where space is a premium
- Can synchronize multiple sensor data streams
Data Interfaces:
- Ethernet, RS-232 or USB
- Analog Bandwidth to 375 Hz with 0.05 dB attenuation
- Programmable Gain
- Real Time Embedded Operating System allows for Maximum
Versatility
- Minimum of 135dB Stopband Attenuation
- Maximized oversampling rate, High order Modulator, and
cascaded decimating digital filters allow for maximizing
the signal to noise ratio
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