CN116818094A - Vibration sensor calibrating device - Google Patents
Vibration sensor calibrating device Download PDFInfo
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- CN116818094A CN116818094A CN202310855814.2A CN202310855814A CN116818094A CN 116818094 A CN116818094 A CN 116818094A CN 202310855814 A CN202310855814 A CN 202310855814A CN 116818094 A CN116818094 A CN 116818094A
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Abstract
The application belongs to the technical field of vibration sensor calibration design, and particularly relates to a vibration sensor calibration device.
Description
Technical Field
The application belongs to the technical field of vibration sensor calibration design, and particularly relates to a vibration sensor calibration device.
Background
In aeroengine tests, the measurement of corresponding parameters by means of vibration sensors is involved.
Currently, the vibration sensor is calibrated by a comparison method, the vibration sensor and the standard sensor are installed on a vibration table in a back-to-back mode to feel the same vibration, the sensitivity of the standard sensor is multiplied by the ratio of the output of the vibration sensor to the output of the standard sensor to obtain the sensitivity of the vibration sensor, and the relative deviation of the sensitivity under different acceleration frequencies, amplitudes and reference conditions is calculated to obtain the characteristics of the vibration sensor.
The existing comparison method can well obtain the normal temperature characteristic of the vibration sensor, but the high temperature characteristic of the vibration sensor cannot be accurately obtained under the simulated high temperature environment, and the working environment of the aeroengine is severe, high temperature and high pressure, and accurate measurement results are difficult to obtain only through the vibration sensor calibrated at normal temperature.
The present application has been made in view of the above-described technical drawbacks.
It should be noted that the above disclosure of the background art is only for aiding in understanding the inventive concept and technical solution of the present application, which is not necessarily prior art to the present application, and should not be used for evaluating the novelty and the inventive idea of the present application in the case where no clear evidence indicates that the above-mentioned content is already disclosed at the filing date of the present application.
Disclosure of Invention
It is an object of the present application to provide a vibration sensor calibration device that overcomes or alleviates at least one of the technical drawbacks of the known art.
The technical scheme of the application is as follows:
a vibration sensor calibration device comprising:
a standard vibration table;
the power amplifier is connected with the standard vibration table;
the sine signal generator is connected with the power amplifier and can generate signals, and the signals are amplified by the power amplifier and then used for controlling the standard vibration table to vibrate;
the mounting seat is connected to the standard vibrating table and is provided with only a mounting groove;
a standard sensor mounted in the mounting groove;
a high temperature furnace supported on a standard vibration table by a bracket;
the transmission rod penetrates through the bottom of the high-temperature furnace, one end penetrating out of the bottom of the high-temperature furnace is connected to the mounting seat, covers the mounting groove and is pressed on the standard sensor;
the adapter is connected to one end of the transmission rod, which is positioned in the high-temperature furnace;
the vibration sensor is connected to the adapter seat;
the standard sensor charge amplifier is connected with the standard sensor, and filters, amplifies and normalizes charge signals generated by vibration of the standard sensor to convert the charge signals into voltage signals;
the standard sensor dynamic signal analyzer is connected with the standard sensor charge amplifier and used for collecting voltage signals corresponding to the standard sensor;
the vibration sensor charge amplifier is connected with the vibration sensor and used for filtering, amplifying and normalizing charge signals generated by vibration of the vibration sensor to convert the charge signals into voltage signals;
the vibration sensor dynamic signal analyzer is connected with the vibration sensor charge amplifier and used for collecting voltage signals corresponding to the vibration sensor;
a thermocouple arranged in the high temperature furnace;
the temperature controller is connected with the high-temperature furnace and the thermocouple to form negative feedback control on the furnace temperature in the high-temperature furnace.
According to at least one embodiment of the application, in the vibration sensor calibration device, a high-temperature furnace body is formed by butting an upper part and a lower part, asbestos is placed between the upper part and the lower part, a vibration sensor and a thermocouple cable are led out, the top end of the upper part of the furnace body is opened, the temperature of the furnace body is reduced when the temperature in the furnace overshoots, and the bottom end of the lower part of the furnace body is opened for a transmission rod to pass through;
the number of the thermocouples and the temperature controllers is two, and the thermocouples are distributed at the middle parts of the upper part and the lower part of the high-temperature furnace body.
According to at least one embodiment of the present application, in the vibration sensor calibration device, the driving rod is a ceramic rod, the inside is hollow, and the two ends and the middle part are larger in size.
According to at least one embodiment of the present application, in the vibration sensor calibration apparatus described above, the mount is fastened to the standard vibration table by a screw;
the standard sensor is fastened on the mounting seat through a double-headed screw;
the transmission rod is fastened with the mounting seat and the adapter seat through screws;
the vibration sensor is fastened on the adapter through a screw.
According to at least one embodiment of the present application, the vibration sensor calibration device further includes:
the monitor is connected with the sinusoidal signal generator, the standard sensor dynamic signal analyzer, the vibration sensor dynamic signal analyzer and the temperature controller;
the monitor can control the high temperature furnace to reach the set temperature through the temperature controller, and can control the standard vibration table to vibrate with the set frequency and amplitude through the sinusoidal signal generator after the set temperature is reached in the high temperature furnace, and collect voltage signals corresponding to the standard sensor and the vibration sensor through the standard sensor dynamic signal analyzer and the vibration sensor dynamic signal analyzer, further calculate and obtain the sensitivity and the deviation of the vibration sensor at the set temperature, the frequency and the amplitude, and obtain the characteristics of the vibration sensor.
Drawings
FIG. 1 is a schematic diagram of a vibration sensor calibration apparatus provided by an embodiment of the present application;
FIG. 2 is a partial schematic view of a vibration sensor calibration apparatus provided in an embodiment of the present application;
wherein:
1-a standard vibration table; a 2-power amplifier; a 3-sine signal generator; 4-mounting seats; 5-standard sensor; 6-a high temperature furnace; 7-a transmission rod; 8-an adapter; 9-a vibration sensor; 10-standard sensor charge amplifier; 11-a standard sensor dynamic signal analyzer; 12-a vibration sensor charge amplifier; 13-a vibration sensor dynamic signal analyzer; 14-a thermocouple; 15-a temperature controller; 16-monitor.
For the purpose of better illustrating the embodiments, certain elements of the drawings are omitted, enlarged or reduced in size and do not represent the actual product dimensions, and furthermore, the drawings are for illustrative purposes only and are not to be construed as limiting the application.
Detailed Description
In order to make the technical solution of the present application and its advantages more clear, the technical solution of the present application will be further and completely described in detail with reference to the accompanying drawings, it being understood that the specific embodiments described herein are only some of the embodiments of the present application, which are for explanation of the present application and not for limitation of the present application. It should be noted that, for convenience of description, only the part related to the present application is shown in the drawings, and other related parts may refer to the general design, and the embodiments of the present application and the technical features of the embodiments may be combined with each other to obtain new embodiments without conflict.
Furthermore, unless defined otherwise, technical or scientific terms used in the description of the application should be given the ordinary meaning as understood by one of ordinary skill in the art to which the application pertains. The terms "upper," "lower," "left," "right," "center," "vertical," "horizontal," "inner," "outer," and the like as used in the description of the present application are merely used for indicating relative directions or positional relationships, and do not imply that the devices or elements must have a specific orientation, be constructed and operated in a specific orientation, and that the relative positional relationships may be changed when the absolute position of the object to be described is changed, thus not being construed as limiting the application. The terms "first," "second," "third," and the like, as used in the description of the present application, are used for descriptive purposes only and are not to be construed as indicating or implying any particular importance to the various components. The use of the terms "a," "an," or "the" and similar referents in the description of the application are not to be construed as limiting the amount absolutely, but rather as existence of at least one. As used in this description of the application, the terms "comprises," "comprising," or the like are intended to cover an element or article that appears before the term as such, but does not exclude other elements or articles from the list of elements or articles that appear after the term.
Furthermore, unless specifically stated and limited otherwise, the terms "mounted," "connected," and the like in the description of the present application are used in a broad sense, and for example, the connection may be a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can also be communicated with the inside of two elements, and the specific meaning of the two elements can be understood by a person skilled in the art according to specific situations.
The application is described in further detail below with reference to fig. 1 to 2.
A vibration sensor calibration device comprising:
a standard vibration table 1;
a power amplifier 2 connected to the standard vibration table 1;
the sinusoidal signal generator 3 is connected with the power amplifier 2 and can generate a signal, and the signal is amplified by the power amplifier 2 and then used for controlling the standard vibration table 1 to vibrate;
a mounting base 4 connected to the standard vibration table 1 and having only a mounting groove thereon;
a standard sensor 5 mounted in the mounting groove;
a high temperature furnace 6 supported on the standard vibration table 1 by a bracket;
the transmission rod 7 penetrates through the bottom of the high-temperature furnace 6, one end penetrating out of the bottom of the high-temperature furnace 6 is connected to the mounting seat 4, covers the mounting groove and is pressed on the standard sensor 5;
the adapter seat 8 is connected to one end of the transmission rod 7 positioned in the high-temperature furnace 6;
the vibration sensor 9 is connected to the adapter seat 8;
the standard sensor charge amplifier 10 is connected with the standard sensor 5, and is used for filtering, amplifying and normalizing charge signals generated by vibration of the standard sensor 5 to convert the charge signals into voltage signals;
a standard sensor dynamic signal analyzer 11 connected to the standard sensor charge amplifier 10 for collecting a voltage signal corresponding to the standard sensor 5;
the vibration sensor charge amplifier 12 is connected with the vibration sensor 9, and filters, amplifies and normalizes charge signals generated by vibration of the vibration sensor 9 to convert the charge signals into voltage signals;
a vibration sensor dynamic signal analyzer 13 connected to the vibration sensor charge amplifier 12 for collecting a voltage signal corresponding to the vibration sensor 9;
a thermocouple 14 provided in the high temperature furnace 6;
the temperature controller 15 is connected with the high temperature furnace 6 and the thermocouple 14 to form negative feedback control on the furnace temperature in the high temperature furnace 6.
The vibration sensor calibration device disclosed in the above embodiment calibrates the vibration sensor, and can be performed with reference to the following steps:
the temperature controller 15 controls the high temperature furnace 6 to reach the set temperature;
the standard vibration table 1 is controlled to vibrate at a set frequency and amplitude through the sine signal generator 3;
collecting voltage signals corresponding to the standard sensor 5 and the vibration sensor 9 through the standard sensor dynamic signal analyzer 11 and the vibration sensor dynamic signal analyzer 13, and further calculating to obtain the sensitivity and deviation of the vibration sensor 9 at set temperature, frequency and amplitude;
and traversing each temperature and the vibration frequency and amplitude thereof to obtain the characteristics of the vibration sensor in a higher temperature range.
For the vibration sensor calibration device disclosed in the above embodiment, those skilled in the art can understand that the vibration sensor 9 is designed to be located in the high temperature furnace 6, the standard sensor 5 is located outside the high temperature furnace 6, and the standard sensor 5 is connected with the high temperature furnace 6 through the transmission rod 7, the mounting seat 4 and the adapter seat 8, so that the vibration sensor 9 and the standard sensor 5 can feel the same vibration, and only the temperature environment of the vibration sensor 9 is independently regulated, so that the characteristics of the vibration sensor under the high temperature condition can be obtained, and the accurate measurement of the parameters of the aeroengine can be realized.
For the vibration sensor calibration device disclosed in the above embodiment, those skilled in the art can understand that the design of the vibration sensor calibration device utilizes the charge amplifier through the standard sensor dynamic signal analyzer 11 and the vibration sensor dynamic signal analyzer 13, and specifically can directly read the velocity displacement amplitude by carrying out primary integration and secondary integration on the acceleration amplitude, so as to collect test data of the standard sensor 5 and the vibration sensor 9, thereby being efficient and direct.
In some alternative embodiments, in the vibration sensor calibration device, the high temperature furnace 6 body is formed by butting an upper part and a lower part, asbestos is placed between the upper part and the lower part, a vibration sensor 9 and a thermocouple 14 cable are led out, the top end opening of the upper part of the furnace body is used for reducing the temperature of the furnace body when the temperature in the furnace overshoots, and the bottom end opening of the lower part of the furnace body is used for a transmission rod 7 to pass through;
the number of the thermocouples 14 and the temperature control instrument 15 is two, and the thermocouples 14 are distributed at the middle parts of the upper part and the lower part of the furnace body of the high-temperature furnace 6.
In some alternative embodiments, in the vibration sensor calibration device, the driving rod 7 is a ceramic rod, and is hollow, and the two ends and the middle part are larger in size, so as to have higher strength.
In some alternative embodiments, in the vibration sensor calibration apparatus described above, the mount 4 is fastened to the standard vibration table 1 by screws;
the standard sensor 5 is fastened on the mounting seat 4 through a double-headed screw;
the transmission rod 7 is fastened with the mounting seat 4 and the adapter seat 8 through screws;
the vibration sensor 9 is fastened on the adapter seat 8 through a screw, so that the vibration sensor 9 and the standard sensor 5 can feel the same vibration.
In some alternative embodiments, the vibration sensor calibration device further includes:
the monitor 16 is connected with the sinusoidal signal generator 3, the standard sensor dynamic signal analyzer 11, the vibration sensor dynamic signal analyzer 13 and the temperature controller 15;
the monitor 16 can control the high temperature furnace 6 to reach a set temperature through the temperature controller 15, and can control the standard vibration table 1 to vibrate at a set frequency and amplitude through the sine signal generator 3 after the set temperature is reached in the high temperature furnace 6, and collect voltage signals corresponding to the standard sensor 5 and the vibration sensor 9 through the standard sensor dynamic signal analyzer 11 and the vibration sensor dynamic signal analyzer 13, so as to calculate and obtain the sensitivity and deviation of the vibration sensor 9 at the set temperature, frequency and amplitude, and obtain the vibration sensor characteristics.
In the description, each embodiment is described in a progressive manner, and each embodiment is mainly described by the differences from other embodiments, so that the same similar parts among the embodiments are mutually referred.
Having thus described the technical aspects of the present application with reference to the preferred embodiments shown in the drawings, it should be understood by those skilled in the art that the scope of the present application is not limited to the specific embodiments, and those skilled in the art may make equivalent changes or substitutions to the related technical features without departing from the principle of the present application, and those changes or substitutions will fall within the scope of the present application.
Claims (5)
1. A vibration sensor calibration apparatus, comprising:
a standard vibrating table (1);
a power amplifier (2) connected with the standard vibration table (1);
the sinusoidal signal generator (3) is connected with the power amplifier (2) and can generate signals, and the signals are amplified by the power amplifier (2) and then used for controlling the standard vibration table (1) to vibrate;
the mounting seat (4) is connected to the standard vibrating table (1) and is provided with only a mounting groove;
a standard sensor (5) mounted in the mounting groove;
a high temperature furnace (6) supported on the standard vibration table (1) by a bracket;
the transmission rod (7) penetrates through the bottom of the high-temperature furnace (6), one end penetrating out of the bottom of the high-temperature furnace (6) is connected to the mounting seat (4), covers the mounting groove and is pressed on the standard sensor (5);
the adapter (8) is connected to one end of the transmission rod (7) positioned in the high-temperature furnace (6);
the vibration sensor (9) is connected to the adapter seat (8);
the standard sensor charge amplifier (10) is connected with the standard sensor (5) and is used for filtering, amplifying and normalizing charge signals generated by vibration of the standard sensor (5) to convert the charge signals into voltage signals;
a standard sensor dynamic signal analyzer (11) connected with the standard sensor charge amplifier (10) for collecting voltage signals corresponding to the standard sensor (5);
the vibration sensor charge amplifier (12) is connected with the vibration sensor (9) and is used for filtering, amplifying and normalizing charge signals generated by vibration of the vibration sensor (9) to convert the charge signals into voltage signals;
a vibration sensor dynamic signal analyzer (13) connected to the vibration sensor charge amplifier (12) for collecting voltage signals corresponding to the vibration sensor (9);
a thermocouple (14) arranged in the high-temperature furnace (6);
the temperature controller (15) is connected with the high-temperature furnace (6) and the thermocouple (14) to form negative feedback control on the furnace temperature in the high-temperature furnace (6).
2. A vibration sensor calibration apparatus according to claim 1, wherein,
the high-temperature furnace (6) body is formed by butting an upper part and a lower part, asbestos is placed between the front parts of the upper part and the lower part, a vibration sensor (9) and a thermocouple (14) cable are led out, the top end of the upper part of the furnace body is opened, the temperature of the furnace body is reduced when the temperature in the furnace overshoots, and the bottom end of the lower part of the furnace body is opened for a transmission rod (7) to pass through;
the number of the thermocouples (14) and the temperature controllers (15) is two, and the thermocouples (14) are distributed at the middle parts of the upper part and the lower part of the furnace body of the high-temperature furnace (6).
3. A vibration sensor calibration apparatus according to claim 1, wherein,
the transmission rod (7) is a ceramic rod, the inside of the transmission rod is hollow, and the two ends and the middle part are large in size.
4. A vibration sensor calibration apparatus according to claim 1, wherein,
the mounting seat (4) is fastened on the standard vibrating table (1) through screws;
the standard sensor (5) is fastened on the mounting seat (4) through a double-headed screw;
the transmission rod (7) is fastened with the mounting seat (4) and the adapter seat (8) through screws;
the vibration sensor (9) is fastened on the adapter seat (8) through a screw.
5. A vibration sensor calibration apparatus according to claim 1, wherein,
further comprises:
the monitor (16) is connected with the sinusoidal signal generator (3), the standard sensor dynamic signal analyzer (11), the vibration sensor dynamic signal analyzer (13) and the temperature controller (15);
the monitor (16) can control the high-temperature furnace (6) to reach a set temperature through the temperature controller (15), and can control the standard vibration table (1) to vibrate at a set frequency and amplitude through the sine signal generator (3) after the set temperature is reached in the high-temperature furnace (6), and acquire voltage signals corresponding to the standard sensor (5) and the vibration sensor (9) through the standard sensor dynamic signal analyzer (11) and the vibration sensor dynamic signal analyzer (13), so as to calculate and obtain the sensitivity and deviation of the vibration sensor (9) under the set temperature, frequency and amplitude, and obtain the characteristics of the vibration sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310855814.2A CN116818094A (en) | 2023-07-13 | 2023-07-13 | Vibration sensor calibrating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310855814.2A CN116818094A (en) | 2023-07-13 | 2023-07-13 | Vibration sensor calibrating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116818094A true CN116818094A (en) | 2023-09-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310855814.2A Pending CN116818094A (en) | 2023-07-13 | 2023-07-13 | Vibration sensor calibrating device |
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| Country | Link |
|---|---|
| CN (1) | CN116818094A (en) |
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- 2023-07-13 CN CN202310855814.2A patent/CN116818094A/en active Pending
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