CN208818338U - High-temperature vibrating sensor calibrating system - Google Patents
High-temperature vibrating sensor calibrating system Download PDFInfo
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- CN208818338U CN208818338U CN201821807168.3U CN201821807168U CN208818338U CN 208818338 U CN208818338 U CN 208818338U CN 201821807168 U CN201821807168 U CN 201821807168U CN 208818338 U CN208818338 U CN 208818338U
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Abstract
The utility model discloses a kind of high-temperature vibrating sensor calibrating systems, including vibration generating arrangement, high-temperature test chamber, sensor to be calibrated, standard transducer, prover and power amplifier, the vibration generating arrangement and prover are connect with power amplifier, the prover also respectively with sensor to be calibrated, standard transducer connection, the moving component of the vibration generating arrangement is fixedly connected with an axis body one end, the axis body other end protrudes into the high-temperature test chamber, and the sensor to be calibrated, standard transducer is arranged at the axis body other end, it is connected between the axis body and the high-temperature test chamber through air bearing.High-temperature vibrating sensor calibrating system structure provided by the utility model is simple, and the high-precision calibration of sensor need to can be only realized using equipment such as common shake tables, easy to operate, at low cost.
Description
Technical field
In particular to a kind of high-temperature vibrating sensor calibrating system of the utility model, belongs to electric vibration table testing equipment skill
Art field.
Background technique
Vibrating sensor is widely used in links during the scientific research, production and test of defence and military, in various rings
The function of monitoring and test is responsible under the conditions of border.It has been investigated that temperature change influences very the sensitivity of vibrating sensor
Greatly, this is because vibrating sensor majority is made of piezoelectric material, according to the characteristic of piezoelectric material, when it is in reference work temperature
When working other than (room temperature), its output charge sensitivity will generate great changes.The survey introduced under high and low temperature environment by temperature
Examination error be can not ignore, and must be modified to the sensitivity of vibrating sensor in use process, this requires to vibration
The temperature response characteristics of sensor are calibrated.The calibration of vibrating sensor at present is all to carry out at normal temperature, calibration method packet
Include absolute method and two kinds of comparison method；Vibrating absolute calibration is that the characteristic parameter of vibration level and vibrating sensor is directly traced to the source
In the method for the fundamental physical quantities such as length, time, absolute calibration is the current the smallest method of vibration calibration uncertainty, absolutely
The vibration standard that method uses is laser vibration measurer.Vibration comparison method calibration is by sensor to be calibrated and by absolute calibration
Reference sensor compare and obtain a kind of method of transducer sensitivity to be calibrated, use the calibration uncertainty of this method
It is big compared with absolute method.It is direct that the shake table of current high-temperature vibrating sensor calibrating system with sensor to be calibrated connect shaft through one
Connection, high-temperature test chamber are directly contacted with connection shaft, and vibration, which is transmitted to sensor to be calibrated along connection shaft, can generate vibration
Distortion, cause situations such as frequency response degree is poor, axial vibration decaying, and connect shaft to generate transverse direction in vibration transmitting
Beat, cause calibration accuracy to reduce；Situations such as to reduce vibration decaying caused by connecting shaft and lateral beat, often
It needs to cause using high-accuracy shake table the cost of implementation of Vibrating Sensor Calibration high, realizes that difficulty is big.
Utility model content
The main purpose of the utility model is to provide a kind of high-temperature vibrating sensor calibrating systems, to overcome the prior art
Deficiency.
For the aforementioned purpose of utility model of realization, the technical solution adopted in the utility model includes:
The utility model embodiment provides a kind of high-temperature vibrating sensor calibrating system comprising vibration generating arrangement,
High-temperature test chamber, sensor to be calibrated, standard transducer, prover and power amplifier, the vibration generating arrangement and school
Quasi- instrument is connect with power amplifier, and the prover is also connect with sensor to be calibrated, standard transducer respectively, the vibration
The moving component of generating device is fixedly connected with an axis body one end, and the axis body other end protrudes into the high-temperature test chamber, and
The sensor to be calibrated, standard transducer are arranged at the axis body other end, the axis body and the high-temperature test chamber it
Between connected through air bearing；Wherein the axis body is fixedly connected with the inner ring of air bearing, the high-temperature test chamber and air axis
The outer ring held directly contacts.
Further, the air bearing and axis body are coaxially disposed.
Further, the sensor stack to be calibrated is located on standard transducer.
Further, the vibration that vibration generating arrangement generates at least is transmitted to height via axis body by the vibration generating arrangement
Sensor and standard transducer to be calibrated in temperature test box.
Further, the outer ring of the air bearing and vibration generating arrangement are without directly contacting.
Further, the vibration generating arrangement uses electric vibration table.
Further, it is additionally provided with heating mechanism in the high-temperature test chamber, at least via the heating mechanism in high temperature
High temperature test environment is formed in chamber.
Further, be additionally provided with temperature monitoring mechanism in the high-temperature test chamber, the temperature monitoring mechanism also with
The heating mechanism connection.
Further, the temperature monitoring mechanism includes thermocouple.
Compared with prior art, high-temperature vibrating sensor calibrating system structure provided by the utility model is simple, is applying
When can effectively eliminate vibration friction, reduce vibrational waveform distortion in the axial direction, and reduce the transverse direction of axis body to greatest extent
Displacement, only common vibration generating arrangement need to be provided can realize high-precision calibration, reduce calibration cost and
Operation difficulty.
Detailed description of the invention
Fig. 1 is a kind of structural representation of high-temperature vibrating sensor calibrating system in one exemplary embodiments of the utility model
Figure.
Specific embodiment
In view of deficiency in the prior art, inventor is studied for a long period of time and is largely practiced, and is able to propose that this is practical new
The technical solution of type.The technical solution, its implementation process and principle etc. will be further explained as follows.
The utility model embodiment provides a kind of high-temperature vibrating sensor calibrating system comprising vibration generating arrangement,
High-temperature test chamber, sensor to be calibrated, standard transducer, prover and power amplifier, the vibration generating arrangement and school
Quasi- instrument is connect with power amplifier, and the prover is also connect with sensor to be calibrated, standard transducer respectively, the vibration
The moving component of generating device is fixedly connected with an axis body one end, and the axis body other end protrudes into the high-temperature test chamber, and
The sensor to be calibrated, standard transducer are arranged at the axis body other end, the axis body and the high-temperature test chamber it
Between connected through air bearing；Wherein the axis body is fixedly connected with the inner ring of air bearing, the high-temperature test chamber and air axis
The outer ring held directly contacts.
Further, the air bearing and axis body are coaxially disposed.
Further, the sensor stack to be calibrated is located on standard transducer.
Further, the vibration that vibration generating arrangement generates at least is transmitted to height via axis body by the vibration generating arrangement
Sensor and standard transducer to be calibrated in temperature test box.
Further, the outer ring of the air bearing and vibration generating arrangement are without directly contacting.
Further, the vibration generating arrangement uses electric vibration table.
Further, it is additionally provided with heating mechanism in the high-temperature test chamber, at least via the heating mechanism in high temperature
High temperature test environment is formed in chamber.
Further, be additionally provided with temperature monitoring mechanism in the high-temperature test chamber, the temperature monitoring mechanism also with
The heating mechanism connection.
Further, the temperature monitoring mechanism includes thermocouple.
The high-temperature vibrating sensor calibrating system of the utility model is in use, axis body can be shorter, and axis body and high temperature
It is to be connected by air bearing between chamber, one side can be eliminated because axis body and high-temperature test chamber directly contact bring
On the other hand the problems such as frequency response is poor, distortion can also conduct to vibration caused by shake table to avoid the heat of high-temperature test chamber
The defects of dynamic platform performance impairment, the motion path of axis body especially can also be horizontally constrained, make it that direction occur with vibration
Unanimously, problems caused by preventing because of axis body horizontally beat.By the high-temperature vibrating sensor school of the utility model
Barebone only needs the equipment such as common electric vibration table, can be realized for equipment such as displacement sensor, acceleration transducers
High-precision calibration reduces cost and operation difficulty.
The technical solution, its implementation process and principle etc. will be further explained in conjunction with attached drawing as follows.
Referring to Fig. 1, a kind of high-temperature vibrating sensor calibrating system comprising vibration generating arrangement 1, high-temperature test chamber 2,
Sensor 6, standard transducer 5, calibration instrument 3 and power amplifier 4 to be calibrated, vibration generating arrangement 1 and power amplifier 4
Connection, power amplifier 4 are connect with calibration instrument 3, and calibration instrument 3 also connects with sensor 6 to be calibrated, standard transducer 5 respectively
It connects；It is fixedly installed axis body 7 above vibration generating arrangement 1, axis body 7 is arranged in sensor 6 to be calibrated, standard transducer 5
The top on top, sensor 6 to be calibrated, standard transducer 5 and axis body 7 is arranged in high-temperature test chamber 2, and vibration fills
Set 1 sensor and mark to be calibrated being at least transmitted to via the vibration that axis body 7 generates vibration generating arrangement in high-temperature test chamber
Quasi- sensor；And air bearing 8 is additionally provided on axis body 7, axis body 7 is fixedly connected with the inner ring of air bearing 8 or axis
7 are wholely set with the inner ring of air bearing 8, and high-temperature test chamber 2 is directly contacted with the outer ring of air bearing 8；Air bearing 8 and axis
Body 7 is coaxially disposed, and high-temperature test chamber 2 and axis body 7 are without directly contacting.
Specifically, in the vibration processes of vibration generating arrangement, due to being provided with sky between shake table and high-temperature test chamber
The vibration that vibration generating arrangement generates is transmitted to high-temperature test chamber by the inner ring of air bearing, axis body by gas bearing, shake table
Interior sensor and standard transducer to be calibrated, high-temperature test chamber are directly contacted with the outer ring of air bearing, air bearing it is interior
Circle and outer ring eliminate vibration friction without directly contacting, and reduce vibration distortion of the vibrational waveform in transmitting, and can be maximum
Limit reduces axis body in the displacement of transverse direction；Base only need to provide vibration generating arrangement by the use of air bearing and can realize
High-precision calibration reduces the cost of calibration.
It should be appreciated that above-described embodiment is only to illustrate the technical ideas and features of the present invention, it is ripe its object is to allow
The personage for knowing technique can understand the content of the utility model and implement accordingly, can not limit the utility model with this
Protection scope.All equivalent change or modifications according to made by the spirit of the present invention essence, should all cover in the utility model
Within protection scope.
Claims (7)
1. a kind of high-temperature vibrating sensor calibrating system, it is characterised in that including vibration generating arrangement, high-temperature test chamber, to be calibrated
Sensor, standard transducer, prover and power amplifier, the vibration generating arrangement and prover are and power amplifier
Connection, the prover are also connect with sensor to be calibrated, standard transducer respectively, the moving component of the vibration generating arrangement
It is fixedly connected with an axis body one end, the axis body other end protrudes into the high-temperature test chamber, and the sensor to be calibrated, mark
Quasi- sensor is arranged at the axis body other end, connects between the axis body and the high-temperature test chamber through air bearing.
2. high-temperature vibrating sensor calibrating system according to claim 1, it is characterised in that: the air bearing and axis body
Coaxial arrangement.
3. high-temperature vibrating sensor calibrating system according to claim 1, it is characterised in that: the vibration generating arrangement is adopted
Use electric vibration table.
4. high-temperature vibrating sensor calibrating system according to claim 1, it is characterised in that: the sensor stack to be calibrated
It is located on standard transducer.
5. high-temperature vibrating sensor calibrating system according to claim 1, it is characterised in that: in the high-temperature test chamber also
It is provided with heating mechanism.
6. high-temperature vibrating sensor calibrating system according to claim 5, it is characterised in that: in the high-temperature test chamber also
It is provided with temperature monitoring mechanism, the temperature monitoring mechanism is connect with the heating mechanism.
7. high-temperature vibrating sensor calibrating system according to claim 6, it is characterised in that: temperature monitoring mechanism packet
Include thermocouple.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821807168.3U CN208818338U (en) | 2018-11-02 | 2018-11-02 | High-temperature vibrating sensor calibrating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821807168.3U CN208818338U (en) | 2018-11-02 | 2018-11-02 | High-temperature vibrating sensor calibrating system |
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| Publication Number | Publication Date |
|---|---|
| CN208818338U true CN208818338U (en) | 2019-05-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821807168.3U Active CN208818338U (en) | 2018-11-02 | 2018-11-02 | High-temperature vibrating sensor calibrating system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110702947A (en) * | 2019-10-14 | 2020-01-17 | 中国工程物理研究院总体工程研究所 | Connecting piece is used in calibration of high temperature resistant accelerometer |
-
2018
- 2018-11-02 CN CN201821807168.3U patent/CN208818338U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110702947A (en) * | 2019-10-14 | 2020-01-17 | 中国工程物理研究院总体工程研究所 | Connecting piece is used in calibration of high temperature resistant accelerometer |
| CN110702947B (en) * | 2019-10-14 | 2024-03-26 | 中国工程物理研究院总体工程研究所 | High temperature resistant accelerometer calibration is with connecting piece |
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