CN202101831U - Vibration testing bench - Google Patents
Vibration testing bench Download PDFInfo
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- CN202101831U CN202101831U CN2011201116026U CN201120111602U CN202101831U CN 202101831 U CN202101831 U CN 202101831U CN 2011201116026 U CN2011201116026 U CN 2011201116026U CN 201120111602 U CN201120111602 U CN 201120111602U CN 202101831 U CN202101831 U CN 202101831U
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Abstract
The utility model provides a vibration testing bench, which comprises a central processing unit, a signal generating unit, a vibration generating unit, a standard sensor and a display unit, wherein the central processing unit is used for controlling the signal generating unit for generating a vibration signal and transmitting the vibration signal to the vibration generating unit for generating corresponding vibration, the standard sensor and a to-be-detected sensor respectively sense the vibration generated by the vibration generating unit, a standard vibration signal measured by the standard sensor and a signal output by the to-be-detected sensor are respectively transmitted to the central processing unit, and the central processing unit transmits the comparison result of the standard vibration signal and the signal output by the to-be-detected sensor to the display unit. The utility model also provides a method for detecting a vibration sensor via employing the vibration testing bench. The vibration testing bench is simple in structure and convenient in carrying; and the vibration testing bench employs a fully-intelligent control, and is simple in operation and relatively low in cost.
Description
Technical field
The utility model relates to the vibration survey field, relates in particular to a kind of vibration table.
Background technology
Development along with sensor technology; Absolute vibration is measured, particularly the ultralow frequency absolute vibration is measured more and more important in the vibration survey field; And along with ultralow frequency acceleration vibration transducer, superlow frequency vibrating speed pickup in measurement and control area (vibration frequency in these fields is mostly between 0.5Hz～200Hz) high volume applications such as hydrogenerator, bridge, tunnel, seismic monitorings, the vibration table of limit for height (generally can only accomplish 20Hz) can't satisfy the superlow frequency vibrating test under the existing frequency response.
Existing domestic superlow frequency vibrating testing table mainly relies on import; But these testing tables cost an arm and a leg, bulky, complex structure, harsh to Test Condition Requirements; Cause that most of experimenter can't buy, the service test platform, also can't carry out acceptance test and data scaling employed vibration transducer even have testing table.
Summary of the invention
The purpose of the utility model is to solve that the ultralow frequency testing table costs an arm and a leg in the prior art, bulky, complex structure, the technical matters harsh to Test Condition Requirements.
The utility model provides a kind of vibration table, comprises CPU, signal generating unit, vibration generation unit, standard transducer and display unit; CPU is used for control signal generating unit generation vibration signal, and passes to vibration generation unit generation corresponding vibration;
Standard transducer and sensor to be measured be the vibration of induction vibration generation unit respectively; Standard vibration signal and signal of sensor to be measured that standard transducer is measured are transferred to CPU respectively, and CPU is transferred to display unit with the comparative result of standard vibration signal and signal of sensor to be measured.
The vibration table that the utility model provides; Through adopting the vibration of induction vibration generation unit simultaneously of standard transducer and sensor to be measured; And each self-metering vibration signal compared, thereby sensor to be measured is carried out qualification determination, and make the operator directly carry out acceptance test and data scaling to employed vibration transducer through display unit; Simple in structure, be easy to carry; Full Based Intelligent Control, easy operating, cost are also lower.
Description of drawings
The structural representation of the vibration table that Fig. 1 provides for the utility model.
Wherein, 1---vibrator, 2---carrier, 3---the standard target disc; 4---CPU, 5---sine wave signal generator, 6---signal amplifier, 7---standard transducer; 8---sensor to be measured, 9---LCDs, 10---touch-screen, 11---potentiometer; 12---the RS232 interface, 71,72---the standard vibration displacement transducer, 73---standard acceler.
Embodiment
Clearer for technical matters, technical scheme and beneficial effect that the utility model is solved, below in conjunction with accompanying drawing the utility model is done further explain.Should be appreciated that specific embodiment described herein only is used to explain the utility model, and be not used in qualification the utility model.
The utility model provides a kind of vibration table, comprises CPU, signal generating unit, vibration generation unit, standard transducer and display unit; CPU is used for control signal generating unit generation vibration signal, and passes to vibration generation unit generation corresponding vibration;
Standard transducer and sensor to be measured be the vibration of induction vibration generation unit respectively; Standard vibration signal and signal of sensor to be measured that standard transducer is measured are transferred to CPU respectively, and CPU is transferred to display unit with the comparative result of the output signal of standard vibration signal and sensing to be measured.
As shown in Figure 1, CPU comprises touch-screen 10 and CPU 4.Wherein touch-screen 10 is used to set the vibration signal data, and the data transmission that CPU 4 will set is given signal generating unit.Signal generating unit comprises sine wave signal generator 5 and signal amplifier 6.The vibration signal of setting before CPU 4 control sine wave signal generators 5 produce, and be transferred to signal amplifier 6.Signal amplifier 6 amplifies this vibration signal, is transferred to the vibration generation unit, produces corresponding vibration to drive the vibration generation unit.The frequency step of sine wave signal generator 5 can be low to moderate 0.1Hz, and maximum thrust is 50N.
The vibration generation unit comprise vibrator 1 and with rigidly connected carrier of the vibrating shaft of vibrator 12 and standard target disc 3.Wherein vibrator 1 produces vibration according to the data of signal amplifier 6 transmission, and drives carrier 2 and the identical vibration of standard target disc 3 generations.The Oscillation Amplitude of vibrator 1 can be through potentiometer 11 control, and potentiometer 11 is connected on the signal amplifier 6, and the negative feedback through signal amplifier 6 is carried out step-less adjustment to the Oscillation Amplitude of vibrator 1.Standard transducer 7 is responded to the vibration of standard target discs 3, and the standard vibration signal of measuring is transferred to CPU 4.In the utility model, said standard transducer 7 can connect other multiple standards sensor of the prior art, not merely is defined in this.Under the preferable case, standard transducer 7 comprises a standard acceler 73 and two standard vibration displacement transducers 71,72 that characteristic is identical.Wherein, standard acceler 73 is rigidly connected with standard target disc 3, is used for measuring vibrations speed and vibration acceleration.Two identical standard vibration displacement transducers 71,72 of characteristic are used for variate vibration displacement in the same way, to improve measuring accuracy, offset the temperature of single standard vibration displacement transducer and float.One of them standard vibration displacement transducer 71 provides a vibration phase signal for simultaneously signal amplifier 6, as negative-feedback signal, makes vibrator 1 in the frequency range of 0.5-200Hz, produce the vibration of amplitude stabilization.CPU 4 handles the vibration signal data that standard transducer 71,72,73 is measured, and is converted into corresponding vibration displacement peak-to-peak value, vibration velocity peak value and vibration acceleration peak value, standard value as a comparison.
In the utility model, sensor to be measured 8 is rigidly connected with carrier 2, and sensor 8 to be measured is directly responded to the vibration of carrier 2, and the output signal of sensor 8 to be measured is transferred to CPU 4.CPU 4 handles the output signal data of this sensor 8 to be measured, is worth by the school as a comparison.
Data result after CPU 4 handles is standard value, by the school value, can directly present to the operator through display unit.Display unit is a LCDs 9.
Also can built-in JJG 644-2003 " vibration displacement sensor vertification regulation " in the CPU 4, JJG 134-2003 " magnetoelectric velocity transducer vertification regulation " and JJG 233-1996 " piezoelectric accelerometer vertification regulation ".Thereby CPU 4 is a foundation with the standard value that measures, and according to JJG 644-2003 " vibration displacement sensor vertification regulation " compare and measure whether up to specification by the school Value Data; Similarly; CPU 4 simultaneously can be according to JJG 134-2003 " magnetoelectric velocity transducer vertification regulation " and JJG 233-1996 " piezoelectric accelerometer vertification regulation " to being carried out qualification determination by the vibration velocity in the value of school, vibration acceleration, and on LCDs 9, demonstrate by the departure of school value and standard value and qualification determination result.
In the utility model, also can be provided with RS232 knot mouthful on the CPU 4, send the result of CPU 4 to the host computer computer, for example carry out the single printing of data calibrating through this interface.
The vibration table that the utility model provides, simple in structure, be easy to carry, measuring accuracy is high, full Based Intelligent Control, foolproof flow operations, the data analysis of expert's formula, the display message capacity is big, practicality is stronger.Need not the dependence on import product, can effectively reduce cost.
The vibration table that adopts the utility model to provide carries out method of testing to vibration transducer, comprises earlier sensor 8 to be measured being placed on the vibration table, and is rigidly connected with carrier 2.Set the vibration signal data through touch-screen 10 then, the data transmission that CPU 4 will set is given sine wave signal generator 5, and control sine wave signal device 5 produces and the corresponding sine wave signal of setting data.This sine wave signal is input to signal amplifier 6 and amplifies, and drives vibrator 1 then and vibrates, and can carry out step-less adjustment this moment through the Oscillation Amplitude of 11 pairs of vibrators of potentiometer.Vibrator 1 drives with its rigidly connected carrier 2 and standard target disc 3 identical vibration takes place.
Standard vibration displacement transducer 71,72 in the standard transducer 7 is responded to the vibration of standard target discs 3, and the vibration displacement of measuring is transferred to CPU 4; One of them standard vibration displacement transducer 71 feeds back to 6 one vibration phase signals of signal amplifier, makes vibrator 1 stable oscillation in the frequency range at 0.5-200Hz.Standard acceler 73 in the standard transducer 7 is rigidly connected with standard target disc 3, measuring vibrations speed and vibration acceleration, and be transferred to CPU 4.CPU 4 handles measurement data, is converted into corresponding vibration displacement peak-to-peak value, vibration velocity peak value and vibration acceleration peak value, standard value as a comparison.
The vibration of sensor 8 induction carriers 2 to be measured is with the output signal transmission CPU 4 of sensor 8 to be measured.CPU 4 handles the output signal data of these sensors 8 to be measured, being worth by the school as a comparison.
At last, CPU 4 is according to built-in vertification regulation,, standard value, all is transferred to LCDs 9 by school value and departure thereof and result of determination and shows being carried out qualification determination by the school value according to standard value.After test was accomplished, CPU 4 can be sent to host computer with test result through the RS232 interface and carry out the single printing of data calibrating.
Above embodiment is merely the preferred implementation of the utility model, should be pointed out that to those skilled in the art, and under the prerequisite that does not break away from the utility model principle, some improvement of having done also should be regarded as the protection domain of the utility model.
Claims (10)
1. a vibration table is characterized in that, described vibration table comprises CPU, signal generating unit, vibration generation unit, standard transducer and display unit; CPU is used for control signal generating unit generation vibration signal, and passes to vibration generation unit generation corresponding vibration; Standard transducer and sensor to be measured be the vibration of induction vibration generation unit respectively; Standard vibration signal and signal of sensor to be measured that standard transducer is measured are transferred to CPU respectively, and CPU is transferred to display unit with the comparative result of standard vibration signal and signal of sensor to be measured.
2. vibration table according to claim 1; It is characterized in that; Said CPU comprises touch-screen and CPU, and touch-screen is used to set the frequency of vibration signal data and sine wave signal generator, and the frequency step of described sine wave signal generator is 0.01Hz; CPU is used for giving signal generating unit with the vibration signal data transmission that sets, and standard vibration signal and signal of sensor to be measured are compared processing.
3. vibration table according to claim 2 is characterized in that, the last RS232 interface that also is provided with of CPU is used for sending the comparison process result of CPU to the host computer computer.
4. vibration table according to claim 1 is characterized in that, signal generating unit comprises sine wave signal generator and signal amplifier and the potentiometer that links to each other with amplifier; Central processing unit controls sine wave signal generator generation vibration signal; Signal amplifier is used for the vibration signal that takes place is amplified, passes through the electrodeless adjusting amplitude of potentiometer, then, is transferred to the vibration generation unit.
5. vibration table according to claim 4 is characterized in that, the vibration generation unit comprise vibrator and with rigidly connected carrier of vibrator vibrating shaft and standard target disc; Vibrator produces corresponding vibration according to the vibration signal of vibration generating unit, drives carrier and with the standard target disc identical vibration takes place.
6. vibration table according to claim 5; It is characterized in that; Comprise the vibration of the standard transducer induction standard target disc of the acceleration transducer vibration displacement sensor identical, and the standard vibration signal of measuring is transferred to CPU with two characteristics; With the vibration of the rigidly connected sensor sensing carrier to be measured of carrier, and signal of sensor to be measured is transferred to CPU.
7. vibration table according to claim 6 is characterized in that, standard acceler and standard target disc are rigidly connected, and are used for measuring vibrations speed and vibration acceleration.
8. vibration table according to claim 6 is characterized in that, two identical standard vibration displacement transducers of characteristic are used for variate vibration displacement in the same way.
9. vibration table according to claim 8 is characterized in that, one of them standard vibration displacement transducer provides the vibration phase signal to signal amplifier, is used to guarantee that vibrator produces the vibration of amplitude stabilization in the frequency range of 0.5-200Hz.
10. vibration table according to claim 1 is characterized in that display unit is a LCDs, is used to show that CPU is to the Signal Processing result.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201116026U CN202101831U (en) | 2011-04-15 | 2011-04-15 | Vibration testing bench |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201116026U CN202101831U (en) | 2011-04-15 | 2011-04-15 | Vibration testing bench |
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| Publication Number | Publication Date |
|---|---|
| CN202101831U true CN202101831U (en) | 2012-01-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011201116026U Expired - Fee Related CN202101831U (en) | 2011-04-15 | 2011-04-15 | Vibration testing bench |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102829941A (en) * | 2012-08-16 | 2012-12-19 | 杭州亿恒科技有限公司 | Automated method for verifying vibration system |
| CN103344398A (en) * | 2013-07-11 | 2013-10-09 | 国家电网公司 | Method for testing damping property of on-line monitoring device of power transformation equipment |
| CN104864901A (en) * | 2014-02-21 | 2015-08-26 | 通用汽车环球科技运作有限责任公司 | Real time retention check tool |
| WO2016127486A1 (en) * | 2015-02-13 | 2016-08-18 | 福州大学 | High-speed multi-dimensional vibration measurement apparatus and method based on stripe target |
| CN106124803A (en) * | 2016-06-13 | 2016-11-16 | 中国地质大学（武汉） | A kind of calibration system of optical fiber acceleration transducer |
| CN108535512A (en) * | 2018-06-21 | 2018-09-14 | 中车青岛四方机车车辆股份有限公司 | A kind of detecting system and method for motor train unit bogie unstability detection device |
-
2011
- 2011-04-15 CN CN2011201116026U patent/CN202101831U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102829941A (en) * | 2012-08-16 | 2012-12-19 | 杭州亿恒科技有限公司 | Automated method for verifying vibration system |
| CN102829941B (en) * | 2012-08-16 | 2016-02-24 | 杭州亿恒科技有限公司 | A kind of automatic mode of vibrational system calibrating |
| CN103344398A (en) * | 2013-07-11 | 2013-10-09 | 国家电网公司 | Method for testing damping property of on-line monitoring device of power transformation equipment |
| CN104864901A (en) * | 2014-02-21 | 2015-08-26 | 通用汽车环球科技运作有限责任公司 | Real time retention check tool |
| CN104864901B (en) * | 2014-02-21 | 2018-01-26 | 通用汽车环球科技运作有限责任公司 | Fixed checking tool and in real time fixed inspection method in real time |
| WO2016127486A1 (en) * | 2015-02-13 | 2016-08-18 | 福州大学 | High-speed multi-dimensional vibration measurement apparatus and method based on stripe target |
| CN106124803A (en) * | 2016-06-13 | 2016-11-16 | 中国地质大学（武汉） | A kind of calibration system of optical fiber acceleration transducer |
| CN108535512A (en) * | 2018-06-21 | 2018-09-14 | 中车青岛四方机车车辆股份有限公司 | A kind of detecting system and method for motor train unit bogie unstability detection device |
| CN108535512B (en) * | 2018-06-21 | 2021-02-09 | 中车青岛四方机车车辆股份有限公司 | Detection system and method of instability detection device of motor train unit bogie |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120104 Termination date: 20130415 |