Laser Doppler Vibrometer

A new generation of laser sensors with high measurement accuracy, small size and lightweight, long measurement distance, wide frequency range and low power consumption.

Application of laser vibrometer in metallurgical steelmaking industry:

>> 1. Vibration monitoring of steel billets to understand the structural integrity and internal defects of steel billets.

>> 2. Monitor equipment status to detect potential problems in time and perform maintenance.

>> 3. Process optimization: For example, by analyzing the vibration mode of the melt, the pouring process can be improved and product quality improved.

>> 4. Structural health monitoring: Monitor the vibration status of large structures such as furnaces and cooling towers to ensure the safety and stability of the structure.

rolling mill reheating furnace

Core Technology of our Laser Doppler Vibrometer

Photonic integrated chip

Self-designed ASIC

Proprietary FMCW modulation and algorithm

Integrated optical module

Micro Laser Doppler Vibrometer

Fixed Micro Laser Doppler Vibrometer

The miniature laser Doppler vibrometer has an ultra-small size and ultra-light mass. Its testing distance can reach up to 40 meters, the frequency range is from 0 to 2.5MHz, the maximum vibration speed can reach 22m/s, and the displacement repeatability can to 0.1nm, and MotionGo also supports 10-channel synchronous measurement, with synchronization accuracy less than 1 microsecond.

Laser Doppler Vibrometer

Handheld Laser Doppler Vibrometer

The handle-type design and compact and lightweight appearance are more suitable for customers’ needs for portable vibration measurement. As the world’s first handheld laser Doppler vibrometer, it can not only be used for industrial vibration inspections, but also for other portable vibration measurements. and analysis scenarios, such as field troubleshooting, rapid vibration analysis, rapid vibration table calibration, etc.

Introduction of Fixed Micro Laser Doppler Vibrometer

The micro laser Doppler vibrometer is a new generation of laser Doppler vibrometer product. Its main structure includes: 1310nm wavelength semiconductor laser, integrated package optical module, external variable focus lens, control and DAC circuit board As well as Zhisen Photon OSP data acquisition and analysis software, etc.

Among them, the integrated package optical module takes the integrated optical chip as the core and integrates the optical coherent light path, adjustment light path, etc. on a single photonic chip, making the new generation of laser vibration measurement products have the characteristics of small size, light weight, and low energy consumption. It is more suitable for the core needs of digitalization, miniaturization and integration of Industrialization 4.0 and Made in China 2025. In addition, the advanced homodyne technology and phase identification optimization algorithm can directly collect the vibration displacement of the object to avoid errors caused by the integral calculation of vibration velocity. While ensuring high measurement accuracy, it also expands the range of test frequencies. The lowest test frequency Up to 0Hz. Compared with the previous generation product, low-frequency testing has higher resolution, meeting the application needs of ultra-low-frequency vibration testing.

Although the miniature laser Doppler vibrometer has an ultra-small size and ultra-light weight, its other properties are by no means inferior to popular foreign products on the market. Its test distance can reach up to 40 meters, the frequency range is from 0 to 2.5MHz, the maximum vibration speed can reach 22m/s, and the displacement repetition accuracy can reach 0.1nm. At the same time, MotionGo also supports 10-channel synchronous measurement, and the synchronization accuracy is less than 1 micron. Second.

In terms of acquisition and analysis software, DBM’s OSP test software can realize online real-time testing of vibration displacement, velocity and acceleration, and has functions such as FFT spectrum analysis and short-time Fourier time-frequency analysis. The GUI interface is simple to operate, and there are many Post-processing analysis function, and also supports function customization services for customer software.

Product Features

Performance parameters

Model

MV-H/G

MV-H/Gx-TR

MV-HW-TR-U

MVP-HW-TR

Lens

Internal and external optional

External, non-fixed focus

External, non-fixed focus

External, non-fixed focus

Working distance (m)

0.06~0.2

0.025~15

0.3~40

0.005~10

Frequency range (Hz)

0~2.5M

0~2.5M

0~2.5M

DC-25M

Laser wavelength (nm)

1310

1310

1310

1310

Test light

Red invisible light

Red invisible light

Red invisible light

Red invisible light

Visible guiding light

No, development card required

No, development card required

There is a red light guiding light

There is a red light guiding light

Displacement noise density (pm/√(Hz))

0.3

0.3

0.3

0.3

Displacement resolution (nm)

0.01

0.01

0.01

0.05

Maximum speed (m/s)

<4.5

<4.5

<22

15

Displacement repeatability (nm, >10Hz)

0.1

0.1

0.1

0.5

Displacement repeatability (nm, <10Hz)

10

10

10

10

Laser output power (mW)

<5

<5

<5

<5

Strange light interference (lux)

>60000

>60000

>60000

>60000

Working temperature (℃)

0~+50

0~+50

0~+50

0~+50

Working humidity(%)

35~85

35~85

35~85

35~85

Supply voltage (V)

12

12

12

5

Power consumption (W)

<4

<4

<4

<7

Security Level

CLASSⅠ(Eye safe)

CLASSⅠ(Eye safe)

CLASSⅠ(Eye safe)

CLASSⅠ(Eye safe)

Protection level

IP67

IP65

IP64

IP64

Signal interface

Network port

Network port

Network port+SMA(F)

Type-C USB

Output signal

Number

Number

Digital + Analog

Digital + Analog

Support WIFI

Not support

Not support

Support

Support

Material

Aluminum alloy

Aluminum alloy

Aluminum alloy

Aluminum alloy

Number of sync channels

<10

<10

<10

NA

Synchronization accuracy

<0.1us

<0.1us

<0.1us

NA

Dimensions (mm)

83.7*50*22

88*50*24

110*50*30.6

120*70*40

Weight(g)

180

208

300

800

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