CN104535170A - Three-dimensional low-frequency vibration detection device - Google Patents
Three-dimensional low-frequency vibration detection device Download PDFInfo
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- CN104535170A CN104535170A CN201410781657.6A CN201410781657A CN104535170A CN 104535170 A CN104535170 A CN 104535170A CN 201410781657 A CN201410781657 A CN 201410781657A CN 104535170 A CN104535170 A CN 104535170A
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Abstract
The invention discloses a three-dimensional low-frequency vibration detection device. The three-dimensional low-frequency vibration detection device is characterized by comprising a shell (1), connectors (2) are arranged on the lower portion of the shell (1), a three-dimensional laser emitting device (3) is arranged in the shell (1) and is composed of an X-axis laser, a Y-axis laser and a Z-axis laser, all of which form a three-dimensional coordinate system, and laser vibration detection device bodies are arranged and matched with the three lasers. Each laser vibration detection device body comprises a lens, wherein a two-dimensional PSD position sensor is arranged on the imaging plane of the lens and connected with a signal conditioning circuit, and the signal conditioning circuit is connected with a data transmission controller through an A/D conversion circuit. The data transmission controllers are connected with a serial data receiving controller, the serial data receiving controller is connected with a data signal processor, and the data signal processor is connected with a PC.
Description
Technical field
The present invention relates to a kind of vibration detection device, particularly a kind of three-dimensional low-frequency vibration detection device.
Background technology
Vibration is a kind of spontaneous phenomenon that External Force Acting produces periodic motion after elastic body, and the research of vibration occupies very important status with test in engineer applied and scientific measurement.Various mechanical system in contemporary engineering: as large power generating equipment, heavy-duty machinery, automobile, boats and ships, aerospace equipment etc., all continuous future development towards high speed, high precision, pin-point accuracy.And accelerate the inefficacy of plant equipment due to oscillating load, even cause the serviceable life of reducing machinery and equipment damaging, leading to a disaster, therefore how measuring vibrations take measures to reduce focus and the difficult point that its impact has become current industrial research field.Existing low-frequency vibration detection device is in accuracy of detection and detect existing very much progress in frequency range, but in actual low-frequency vibration detection application, also lacks the low cost vibration detection device that can detect multidimensional low frequency vibration data under complex environment in real time.
Summary of the invention
The present invention is the above-mentioned deficiency in order to solve existing for prior art, proposes a kind of structure simple, with low cost, stable, is convenient to install, and the three-dimensional low-frequency vibration detection device that can detect the vibration data on three-dimensional simultaneously and gather.
Technical solution of the present invention is: a kind of three-dimensional low-frequency vibration detection device, it is characterized in that: described pick-up unit comprises housing 1, the bottom of housing 1 is provided with web member 2, three-dimensional laser emitter 3 is provided with in housing 1, three-dimensional laser emitter 3 is by the X-axis laser instrument forming a three-dimensional system of coordinate, Y-axis laser instrument and Z axis laser constitution, what all match with above-mentioned three laser instruments is provided with laser vibrometer pick-up unit, described laser vibrometer pick-up unit comprises lens, the imaging surface of lens is provided with Two-dimensional PSD position transducer, signal conditioning circuit is connected with Two-dimensional PSD position transducer, signal conditioning circuit is connected with Data Transmission Control Unit by A/D change-over circuit, Data Transmission Control Unit is then connected with Serial data receiving controller, Serial data receiving controller is connected with digital signal processor, housing 1 offers the hole that the laser that sends for three-dimensional laser emitter 3 passes through.
Described X-axis laser instrument, Y-axis laser instrument are identical with the distance between Z axis laser instrument with laser vibrometer pick-up unit, are 2-4 rice.
Compared with the existing technology, tool has the following advantages in the present invention:
The three-dimensional low-frequency vibration detection device of this kind of version, its structure is simple, with low cost, is convenient to install, stable.It is difficult to the problem realizing detecting multidimensional low frequency vibration data in real time under complex environment for traditional vibration detection device, design a kind of special detection architecture, it creatively spatially constructs three-dimensional system of coordinate, simultaneously in X-axis, to the parameters (amplitude of vibration in Y-axis and Z-direction, frequency etc.) measure in real time, and measurement result is stored in order to treatment and analysis, and its manufacture craft is simple, cheap for manufacturing cost, therefore can say that it has possessed multiple advantage, be particularly suitable for applying in the art, its market outlook are very wide.
Accompanying drawing explanation
Fig. 1 is the working state schematic representation of the embodiment of the present invention.
Fig. 2 is the structural representation of embodiment of the present invention housing parts.
Fig. 3 is the block diagram of system of the embodiment of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described.As shown in Figure 1, Figure 2, Figure 3 shows: a kind of three-dimensional low-frequency vibration detection device, it comprises a housing 1, the bottom of housing 1 is provided with web member 2, when detecting, need by web member 2 housing 1 fixed and be connected on object under test, here web member can carry out selecting or designing according to the actual conditions of object under test, if web member 2 is a kind of flange arrangements, is bolted to connection on object under test; If web member 2 is a kind of connected structures, grafting is also fixed in the hole be opened on object under test; Three-dimensional laser emitter 3 is provided with in housing 1, this three-dimensional laser emitter 3 is by X-axis laser instrument, Y-axis laser instrument and Z axis laser constitution, and X-axis laser instrument, Y-axis laser instrument and Z axis laser instrument form a three-dimensional system of coordinate jointly, what all match with each laser instrument is provided with a laser vibrometer pick-up unit, and three laser instruments are identical with the distance between three laser vibrometer pick-up units, and its distance range is 2-4 rice; Laser vibrometer pick-up unit can receive the laser sent in laser instrument, and record the deviation produced in the process that laser vibrates at object under test, then these data are sent to coupled Serial data receiving controller, by Serial data receiving controller data message is sent in digital signal processor and processes, described digital signal processor can directly connect the peripheral hardware such as display, keyboard, directly by testing result display on a display screen; Simultaneously digital signal processor can also be connected with PC, and the testing result about Vibration Condition can directly be reacted on the display screen of PC, in the hard disk being also stored in PC or other mobile data memory units (as SD card etc.); Described laser vibrometer pick-up unit comprises lens, the imaging surface of lens is provided with Two-dimensional PSD position transducer, signal conditioning circuit is connected with this Two-dimensional PSD position transducer, signal conditioning circuit is then connected with Data Transmission Control Unit by A/D change-over circuit, and Data Transmission Control Unit is connected with above-mentioned Serial data receiving controller.
The course of work of the three-dimensional low-frequency vibration detection device of the embodiment of the present invention is as follows: be first fixedly connected on object under test by housing 1 by web member 2, then laser vibrometer pick-up unit is set respectively on three Laser emission directions of three-dimensional laser emitter 3, distance between each laser vibrometer pick-up unit distance lasers is identical, preferred scope is 2-4 rice, then three-dimensional laser emitter 3 is opened, in an initial condition, the laser that laser instrument sends is after lens, a location point can be formed on Two-dimensional PSD position transducer, adjust this point to overlap with the geometric center point of Two-dimensional PSD position transducer, preliminary work completes,
When there is vibration in testee, rigidly connected housing 1 and three-dimensional laser emitter 3 also can do the vibration of same frequency and amplitude thereupon with it, and then the laser causing three-dimensional laser emitter 3 to send also can vibrate, under the effect of vibration, also the change in location of corresponding frequencies and amplitude can be there is in the location point be irradiated on Two-dimensional PSD position transducer, after these data are amplified by signal conditioning circuit by Two-dimensional PSD position transducer, be transported in Serial data receiving controller (FPGA) through A/D change-over circuit and Data Transmission Control Unit (selecting STM32 controller) here, the data transmitted in three laser vibrometer pick-up units are sent in digital signal processor (DSP) and process by Serial data receiving controller, and then the every parameter had about vibration measured when testee vibrates, these parameters can directly be presented on the display screen of PC, also can be stored in the hard disk of PC, in order to treatment and analysis.
Claims (2)
1. a three-dimensional low-frequency vibration detection device, it is characterized in that: described pick-up unit comprises housing (1), the bottom of housing (1) is provided with web member (2), three-dimensional laser emitter (3) is provided with in housing (1), three-dimensional laser emitter (3) is by the X-axis laser instrument forming a three-dimensional system of coordinate, Y-axis laser instrument and Z axis laser constitution, what all match with above-mentioned three laser instruments is provided with laser vibrometer pick-up unit, described laser vibrometer pick-up unit comprises lens, the imaging surface of lens is provided with Two-dimensional PSD position transducer, signal conditioning circuit is connected with Two-dimensional PSD position transducer, signal conditioning circuit is connected with Data Transmission Control Unit by A/D change-over circuit, Data Transmission Control Unit is then connected with Serial data receiving controller, Serial data receiving controller is connected with digital signal processor, housing (1) offers the hole passed through for three-dimensional laser emitter (3) laser that sends.
2. three-dimensional low-frequency vibration detection device according to claim 1, is characterized in that: described X-axis laser instrument, Y-axis laser instrument are identical with the distance between Z axis laser instrument with laser vibrometer pick-up unit, are 2-4 rice.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410781657.6A CN104535170A (en) | 2014-12-17 | 2014-12-17 | Three-dimensional low-frequency vibration detection device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410781657.6A CN104535170A (en) | 2014-12-17 | 2014-12-17 | Three-dimensional low-frequency vibration detection device |
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| CN104535170A true CN104535170A (en) | 2015-04-22 |
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| CN201410781657.6A Pending CN104535170A (en) | 2014-12-17 | 2014-12-17 | Three-dimensional low-frequency vibration detection device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018233278A1 (en) * | 2017-06-20 | 2018-12-27 | 福州大学 | Apparatus and method for simultaneous measurement of three-dimensional vibration of rotary shaft |
| CN113405582A (en) * | 2016-06-14 | 2021-09-17 | 罗伯特·博世有限公司 | Sensor device and method for producing a sensor device |
| WO2023029433A1 (en) * | 2021-08-31 | 2023-03-09 | 青岛海尔空调器有限总公司 | Pipeline vibration testing apparatus |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2002054987A (en) * | 2000-08-11 | 2002-02-20 | Graphtec Corp | Three-dimensional laser doppler vibrograph |
| CN202511872U (en) * | 2012-03-20 | 2012-10-31 | 大连民族学院 | Novel low-frequency vibration laser detection device under strong electromagnetic interference |
| WO2013131197A1 (en) * | 2012-03-09 | 2013-09-12 | Genesis Group Inc. | Dual fibre bragg grating accelerometer |
| CN203858085U (en) * | 2014-05-29 | 2014-10-01 | 北京强度环境研究所 | Platform three-axis flight vibration time domain waveform reproducing system |
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2014
- 2014-12-17 CN CN201410781657.6A patent/CN104535170A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002054987A (en) * | 2000-08-11 | 2002-02-20 | Graphtec Corp | Three-dimensional laser doppler vibrograph |
| WO2013131197A1 (en) * | 2012-03-09 | 2013-09-12 | Genesis Group Inc. | Dual fibre bragg grating accelerometer |
| CN202511872U (en) * | 2012-03-20 | 2012-10-31 | 大连民族学院 | Novel low-frequency vibration laser detection device under strong electromagnetic interference |
| CN203858085U (en) * | 2014-05-29 | 2014-10-01 | 北京强度环境研究所 | Platform three-axis flight vibration time domain waveform reproducing system |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113405582A (en) * | 2016-06-14 | 2021-09-17 | 罗伯特·博世有限公司 | Sensor device and method for producing a sensor device |
| WO2018233278A1 (en) * | 2017-06-20 | 2018-12-27 | 福州大学 | Apparatus and method for simultaneous measurement of three-dimensional vibration of rotary shaft |
| WO2023029433A1 (en) * | 2021-08-31 | 2023-03-09 | 青岛海尔空调器有限总公司 | Pipeline vibration testing apparatus |
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Application publication date: 20150422 |
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| WD01 | Invention patent application deemed withdrawn after publication |