CN115979410A - Calibration method and device of integrated vibration transmitter based on Pulse - Google Patents
Calibration method and device of integrated vibration transmitter based on Pulse Download PDFInfo
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- CN115979410A CN115979410A CN202211743524.0A CN202211743524A CN115979410A CN 115979410 A CN115979410 A CN 115979410A CN 202211743524 A CN202211743524 A CN 202211743524A CN 115979410 A CN115979410 A CN 115979410A
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Abstract
The invention provides a calibration method and a calibration device of an integrated vibration transmitter based on Pulse, wherein the method comprises the following steps: generating an initial first voltage signal using a vibration calibration system; amplifying the first voltage signal to enable the vibration table to vibrate; detecting the amplitude of vibration of the vibration table through a standard accelerometer to obtain a second voltage signal; converting the second voltage signal into an acceleration value through a first multiplier, and comparing the acceleration value obtained through conversion with a preset acceleration value so that the vibration calibration system performs feedback adjustment on the first voltage signal according to a comparison result until the comparison result meets a condition; and acquiring an output signal of the transmitter to be detected to realize calibration. Compared with the prior art, the vibration calibration system compares the preset acceleration value with the acceleration value detected and converted by the standard accelerometer, and carries out feedback adjustment on the first voltage signal according to the comparison result, so that closed-loop automatic calibration is realized.
Description
Technical Field
The invention relates to the field of vibration transmitter calibration, in particular to a calibration method and a calibration device of an integrated vibration transmitter based on Pulse.
Background
The integrated vibration transmitter is a device which integrates a vibration sensor and a signal regulating circuit and directly converts a vibration signal acquired on site into a 4-20 mA current signal for output. The current signal of its output is difficult to be disturbed, and does not receive the influence of wire resistance series connection in the return circuit, and the teletransmission of being convenient for in addition has firm stable characteristics because it has integrated structure, and it has extensive application in trades such as electric power, steel and iron, petrochemical industry to and the vibration on-line monitoring field in bearing machinery, compressor, industrial fan, steam turbine etc..
For the calibration work of the integrated vibration transmitter, the calibration work is generally carried out based on a medium-frequency vibration calibration device. The technology installs the integrated vibration transmitter and the standard acceleration sensor on a medium-frequency standard vibration table in a back-to-back mode, enables the vibration table to work under different vibration frequencies and vibration amplitudes by controlling the amplitude of an excitation source signal of the vibration table, acquires an output signal of the standard acceleration sensor through a vibration signal acquisition instrument to obtain reference values of the vibration frequencies and the vibration amplitudes, and then acquires the output current value of the integrated vibration transmitter to obtain the sensitivity parameters, the frequency response parameters and the like of the integrated vibration transmitter, so that the calibration of the integrated vibration transmitter is realized. At present, for a Pulse vibration signal acquisition instrument which is commonly used, the input of the Pulse vibration signal acquisition instrument is a voltage signal, and the output of an integrated vibration transmitter is a current signal. Therefore, signals of the integrated vibration transmitter cannot be directly acquired through the Pulse vibration signal acquisition instrument, closed-loop automatic calibration cannot be achieved, the current value of the integrated vibration transmitter can be measured only through the digital multimeter, the original recording table is manually input, then calibration of the next vibration frequency point and the next vibration amplitude point is conducted, efficiency is low, and errors are easily introduced due to the fact that input data are wrong.
Disclosure of Invention
The invention provides a calibration method and a calibration device of an integrated vibration transmitter based on Pulse, which aim to solve the technical problem of how to realize closed-loop automatic calibration and improve the calibration efficiency and accuracy.
In order to solve the technical problem, an embodiment of the present invention provides a calibration method for a Pulse-based integrated vibration transmitter, including:
generating an initial first voltage signal using a vibration calibration system; wherein the vibration calibration system comprises a computer and a Pulse;
amplifying the first voltage signal through a power amplifier so as to enable the vibration table to vibrate; the first voltage signal is amplified and then used for driving the vibration table;
detecting the vibration amplitude of the vibration table through a standard accelerometer to obtain a second voltage signal;
converting the second voltage signal into an acceleration value through a first multiplier, and comparing the acceleration value obtained through conversion with a preset acceleration value through a comparator, so that the vibration calibration system performs feedback adjustment on the first voltage signal according to a comparison result until the comparison result meets a preset condition;
when the comparison result meets a preset condition, acquiring an output signal of the transmitter to be detected through a vibration calibration system, and realizing calibration of the transmitter to be detected; wherein the output signal is processed by a second multiplier.
As a preferred scheme, the output signal is processed by a second multiplier, specifically:
acquiring a first current signal according to the vibration of the vibration table through the transmitter to be detected;
the second multiplier is configured with a standard resistance through which the first current signal is converted into the output signal in voltage.
Preferably, the converting the first current signal into the output signal represented by a voltage through the standard resistor includes:
the first current signal I is obtained according to t Conversion to the output signal V:
V＝I t R(1+αT)；
wherein, alpha is the temperature coefficient of the standard resistor, and T is the calibration environment temperature.
As a preferred scheme, the calibrating the transmitter to be tested includes: calculating a calibration characteristic parameter of the transmitter to be detected; the calibration characteristic parameter comprises sensitivity;
the calculation formula of the sensitivity of the detected transmitter is specifically as follows:
wherein S is the sensitivity of the transmitter to be tested, V s For the voltage signal output by a standard accelerometer, M s The sensitivity of a standard accelerometer.
As a preferred scheme, the converting the second voltage signal into an acceleration value by a first multiplier specifically includes:
multiplying the second voltage signal by an inverse of the sensitivity of the standard accelerometer to convert the second voltage signal to an acceleration value.
As a preferred scheme, the comparison result is a difference value between the acceleration value obtained by conversion and a preset acceleration value; the preset conditions are specifically as follows: the difference is zero.
Correspondingly, the embodiment of the invention also provides a calibration device of the integrated vibration transmitter based on Pulse, which comprises a first voltage generation module, a power amplification module, a detection module, a feedback regulation module and a calibration module; wherein, the first and the second end of the pipe are connected with each other,
the first voltage generation module is used for generating an initial first voltage signal by utilizing a vibration calibration system; wherein the vibration calibration system comprises a computer and a Pulse;
the power amplification module is used for amplifying the first voltage signal through a power amplifier so as to enable the vibration table to vibrate; the first voltage signal is amplified and then used for driving the vibration table;
the detection module is used for detecting the vibration amplitude of the vibration table through a standard accelerometer to acquire a second voltage signal;
the feedback adjusting module is used for converting the second voltage signal into an acceleration value through a first multiplier, and comparing the acceleration value obtained through conversion with a preset acceleration value through a comparator, so that the vibration calibration system performs feedback adjustment on the first voltage signal according to a comparison result until the comparison result meets a preset condition;
the calibration module is used for acquiring an output signal of the transmitter to be tested through a vibration calibration system when the comparison result meets a preset condition, so as to realize calibration of the transmitter to be tested; wherein the output signal is processed by a second multiplier.
As a preferred scheme, the processing of the output signal by the second multiplier specifically includes:
acquiring a first current signal according to the vibration of the vibration table through the transmitter to be detected;
the second multiplier is configured with a standard resistance through which the first current signal is converted into the output signal in voltage.
As a preferred scheme, the calibration module converts the first current signal into the output signal expressed by voltage through the standard resistor, specifically:
the calibration module is used for calibrating the first current signal I according to the following formula t Conversion to the output signal V:
V＝I t R(1+αT)；
wherein, alpha is the temperature coefficient of the standard resistor, and T is the calibration environment temperature.
Preferably, the calibration module implements calibration of the transmitter to be tested, and includes: the calibration module calculates calibration characteristic parameters of the transmitter to be tested; the calibration characteristic parameter comprises sensitivity;
the formula for calculating the sensitivity of the detected transmitter is specifically as follows:
wherein S is the sensitivity of the transmitter to be tested, V s Is the voltage signal output by a standard accelerometer, M s Is the sensitivity of a standard accelerometer.
As a preferred scheme, the feedback adjusting module converts the second voltage signal into an acceleration value through a first multiplier, specifically:
the feedback adjustment module multiplies the second voltage signal by an inverse of a sensitivity of the standard accelerometer to convert the second voltage signal to an acceleration value.
As a preferred scheme, the comparison result is the difference value between the acceleration value obtained by conversion and a preset acceleration value; the preset conditions are specifically as follows: the difference is zero.
Compared with the prior art, the embodiment of the invention has the following beneficial effects:
the embodiment of the invention provides a calibration method and a calibration device of an integrated vibration transmitter based on Pulse, wherein the calibration method comprises the following steps: generating an initial first voltage signal using a vibration calibration system; wherein the vibration calibration system comprises a computer and a Pulse; amplifying the first voltage signal through a power amplifier so as to enable the vibration table to vibrate; the first voltage signal is amplified and then used for driving the vibration table; detecting the amplitude of vibration of the vibration table through a standard accelerometer to obtain a second voltage signal; converting the second voltage signal into an acceleration value through a first multiplier, and comparing the acceleration value obtained through conversion with a preset acceleration value through a comparator, so that the vibration calibration system performs feedback adjustment on the first voltage signal according to a comparison result until the comparison result meets a preset condition; when the comparison result meets a preset condition, acquiring an output signal of the transmitter to be detected through a vibration calibration system, and realizing calibration of the transmitter to be detected; wherein the output signal is processed by a second multiplier. Compared with the prior art, the vibration calibration system based on the computer and the Pulse compares the preset acceleration value with the acceleration value detected and converted by the standard accelerometer, and performs feedback adjustment on the first voltage signal according to the comparison result, so that closed-loop automatic calibration is realized; in addition, the current value of the integrated vibration transmitter is not required to be measured through a digital multimeter, manual intervention is not required to execute operations such as inputting and recording tables, manpower and material resources are saved, meanwhile, the calibration efficiency and accuracy are improved, and errors caused by manpower intervention are avoided.
Furthermore, the temperature compensation correction is introduced in consideration of the fact that the resistance value of the standard resistor is possibly influenced by the temperature, so that the calibration precision is further effectively improved, and the measurement uncertainty introduced by the standard resistor is reduced.
Drawings
FIG. 1: the invention provides a flow schematic diagram of an embodiment of a calibration method of an integrated vibration transmitter based on Pulse.
FIG. 2 is a schematic diagram: the invention discloses a principle schematic diagram of an embodiment of a calibration device of an integrated vibration transmitter based on Pulse.
FIG. 3: the invention provides a schematic diagram of a calibration device of an integrated vibration transmitter based on Pulse.
FIG. 4: the invention provides a structural schematic diagram of an embodiment of a calibration device of an integrated vibration transmitter based on Pulse.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive step based on the embodiments of the present invention, are within the scope of protection of the present invention.
The first embodiment is as follows:
according to the related technical record, in the calibration work of the existing integrated vibration transmitter, the integrated vibration transmitter and a standard acceleration sensor are arranged on a medium-frequency standard vibration table in a back-to-back mode, the amplitude of an excitation source signal of the vibration table is controlled, the vibration table works under different vibration frequencies and vibration amplitudes, and a vibration signal acquisition instrument acquires an output signal of the standard acceleration sensor to obtain reference values of the vibration frequencies and the vibration amplitudes. And then, acquiring the output current value of the integrated vibration transmitter to obtain the sensitivity parameter, frequency response and other parameters of the integrated vibration transmitter, thereby realizing the calibration of the integrated vibration transmitter. The input of the current Pulse vibration signal acquisition instrument is a voltage signal, so that the signal of the integrated vibration transmitter cannot be directly acquired through the Pulse vibration signal acquisition instrument, closed-loop automatic calibration cannot be performed, vibration acceleration cannot be automatically controlled, the output voltage of a controller needs to be manually set, or the output acceleration of a vibration table is controlled through the amplification factor of a power amplifier. Because the frequency response characteristic of the vibration system is not a constant value, when manual control is carried out, the voltages output by the controller are different for the acceleration of different frequencies, and therefore adjustment is needed according to the frequencies; meanwhile, because the amplitude of the vibration system is nonlinear, the output voltage of the controller cannot be set according to a linear relation in the process of approaching a set acceleration value, so that the method for manually adjusting the output voltage of the controller or adjusting the amplification factor of the power amplifier is time-consuming, and the reading of the digital multimeter also needs to be manually input into an original record, which easily causes a coarse error.
Referring to fig. 1, fig. 1 is a calibration method for a Pulse-based integrated vibration transmitter according to an embodiment of the present invention, including steps S1 to S5, wherein,
step S1, generating an initial first voltage signal by using a vibration calibration system; wherein the vibration calibration system comprises a computer and a Pulse.
S2, amplifying the first voltage signal through a power amplifier to enable a vibration table to vibrate; the first voltage signal is amplified and then used for driving the vibration table.
And S3, detecting the vibration amplitude of the vibration table through a standard accelerometer to obtain a second voltage signal.
And S4, converting the second voltage signal into an acceleration value through a first multiplier, and comparing the acceleration value obtained through conversion with a preset acceleration value through a comparator, so that the vibration calibration system performs feedback adjustment on the first voltage signal according to a comparison result until the comparison result meets a preset condition.
S5, when the comparison result meets a preset condition, acquiring an output signal of the transmitter to be detected through a vibration calibration system, and realizing calibration of the transmitter to be detected; wherein the output signal is processed by a second multiplier.
In this embodiment, as an exemplary implementation manner of this embodiment, this embodiment further provides an automatic calibration device, and referring to fig. 2 and fig. 3, the automatic calibration device in fig. 2 includes a controller, an actuator, a controlled object, a detection device, a controlled quantity, and a multiplier. Referring to table 1, the correspondence between each component of the automatic calibration device and the entity is shown:
TABLE 1 automatic calibration device each component and entity name relation comparison table
| Serial number | Device part | Entity name | |
| 1 | Controller (with comparator) | Vibration calibration system composed of computer and Pulse | |
| 2 | Actuator | Power amplifier | |
| 3 | Controlled object | Vibration table | |
| 4 | Detection device | Standard accelerometer and detected integrated vibration transmitter | |
| 5 | Controlled quantity | Acceleration (amplitude and frequency) | |
| 6 | Multiplier device | Standard accelerometer sensitivity value and standard resistance R |
Specifically, in the present embodiment, first, an acceleration value for comparison is set, and the set acceleration value may be 1m/s 2 、2m/s 2 、5m/s 2 、10m/s 2 、20m/s 2 、50m/s 2 、100m/s 2 、200m/s 2 And the like. In step S1, a vibration calibration system composed of a computer and a Pulse outputs an initial first voltage signal to a power amplifierThen, the vibration calibration system composed of the computer and the Pulse serves as a controller, the power amplifier serves as an actuator, and power amplification is performed on the first voltage signal, in this embodiment, mainly current amplification is performed, and the controlled object, that is, the vibration table, is driven by the current to vibrate (step S2).
Secondly, step S3 is to detect through a standard accelerometer, which senses a vibration signal of the vibration table to obtain a second voltage signal, where the second voltage signal is proportional to an amplitude of the vibration acceleration, and then step S4 converts the second voltage signal into an acceleration value through a first multiplier, specifically: multiplying the second voltage signal by an inverse of the sensitivity of the standard accelerometer (1/Sa) to convert the second voltage signal to an acceleration value. And comparing the acceleration value obtained by conversion with a preset acceleration value through a comparator, so that the vibration calibration system performs feedback adjustment on the first voltage signal according to a comparison result until the comparison result meets a preset condition. And when the difference value is zero, judging that the comparison result meets the preset condition.
For the step S5, when the comparison result meets the preset condition, that is, the set acceleration value is reached, in this state, the transmitter to be tested also senses the vibration signal of the vibrating table, and outputs a current signal, and since the controller can only receive the voltage signal, the current signal is processed by the second multiplier, specifically: acquiring a first current signal according to the vibration of the vibration table through the transmitter to be detected; the second multiplier is configured with a reference resistor R by which the first current signal is converted into the output signal in voltage.
The controller collects the output signal and the voltage signal output by the standard accelerometer at the current moment and carries out operation to obtain calibration characteristic parameters, such as sensitivity and the like, of the transmitter to be tested so as to realize calibration of the transmitter to be tested.
Specifically, the calculation formula of the sensitivity S is:
wherein, I t The unit of the amplitude of the current signal output by the transmitter to be detected is A. V s Is the voltage signal output by a standard accelerometer and has the unit of V. M is a group of s The sensitivity of the standard accelerometer can be obtained through a traceability certificate of the standard accelerometer.
Further, to improve calibration accuracy, the conversion relationship between the output signal and the actual transmitter output current can be further optimized. The converting the first current signal into the output signal represented by a voltage through the standard resistor specifically includes:
the first current signal I is obtained according to t Conversion to the output signal V:
V＝I t R(1+αT)；
wherein, alpha is the temperature coefficient of the standard resistor, and T is the calibration environment temperature. By implementing the embodiment of the application, the influence of temperature on the resistance value of the standard resistor is considered, and temperature compensation correction is introduced, so that the calibration precision is further effectively improved, and the measurement uncertainty introduced by the standard resistor is reduced.
After the temperature compensation correction is considered, the corresponding sensitivity calculation formula of the detected transmitter can be obtained as follows:
Correspondingly, referring to fig. 4, an embodiment of the present invention further provides a calibration apparatus for a Pulse-based integrated vibration transmitter, including a first voltage generating module 101, a power amplifying module 102, a detecting module 103, a feedback adjusting module 104, and a calibration module 105; wherein the content of the first and second substances,
the first voltage generation module 101 is configured to generate an initial first voltage signal by using a vibration calibration system; wherein the vibration calibration system comprises a computer and a Pulse;
the power amplification module 102 is configured to amplify the first voltage signal through a power amplifier, so as to vibrate the vibration table; the first voltage signal is amplified and then used for driving the vibration table;
the detection module 103 is configured to detect an amplitude of vibration of the vibration table through a standard accelerometer to obtain a second voltage signal;
the feedback adjusting module 104 is configured to convert the second voltage signal into an acceleration value through a first multiplier, and compare the acceleration value obtained through the conversion with a preset acceleration value through a comparator, so that the vibration calibration system performs feedback adjustment on the first voltage signal according to a comparison result until the comparison result meets a preset condition;
the calibration module 105 is configured to, when the comparison result meets a preset condition, obtain an output signal of the transmitter to be tested through a vibration calibration system, so as to calibrate the transmitter to be tested; wherein the output signal is processed by a second multiplier.
As a further preferred embodiment, the processing of the output signal by the second multiplier is specifically as follows:
acquiring a first current signal according to the vibration of the vibration table through the transmitter to be detected;
the second multiplier is configured with a reference resistance by which the first current signal is converted into the output signal in voltage.
As a further preferred embodiment, the calibration module 105 converts the first current signal into the output signal represented by a voltage through the standard resistor, specifically:
the calibration module 105 converts the first current signal I according to the following equation t Conversion to the output signal V:
V＝I t R(1+αT)；
wherein, alpha is the temperature coefficient of the standard resistor, and T is the calibration environment temperature.
As a further preferred embodiment, the calibration module 105 implements calibration of the transmitter under test, including: the calibration module 105 calculates calibration characteristic parameters of the transmitter to be tested; the calibration characteristic parameter comprises sensitivity;
the formula for calculating the sensitivity of the detected transmitter is specifically as follows:
wherein S is the sensitivity of the transmitter to be tested, V s Is the voltage signal output by a standard accelerometer, M s The sensitivity of a standard accelerometer.
As a further preferred embodiment, the feedback adjusting module 104 converts the second voltage signal into an acceleration value through a first multiplier, specifically:
the feedback adjustment module 104 multiplies the second voltage signal by the inverse of the sensitivity of the standard accelerometer to convert the second voltage signal to an acceleration value.
As a further preferred embodiment, the comparison result is a difference value between the converted acceleration value and a preset acceleration value; the preset conditions are specifically as follows: the difference is zero.
Compared with the prior art, the embodiment of the invention has the following beneficial effects:
the embodiment of the invention provides a calibration method and a calibration device of an integrated vibration transmitter based on Pulse, wherein the calibration method comprises the following steps: generating an initial first voltage signal using a vibration calibration system; wherein the vibration calibration system comprises a computer and a Pulse; amplifying the first voltage signal through a power amplifier to enable the vibration table to vibrate; detecting the amplitude of vibration of the vibration table through a standard accelerometer to obtain a second voltage signal; converting the second voltage signal into an acceleration value through a first multiplier, and comparing the acceleration value obtained through conversion with a preset acceleration value through a comparator, so that the vibration calibration system performs feedback adjustment on the first voltage signal according to a comparison result until the comparison result meets a preset condition; when the comparison result meets a preset condition, acquiring an output signal of the transmitter to be detected through a vibration calibration system, and realizing calibration of the transmitter to be detected; wherein the output signal is processed by a second multiplier. Compared with the prior art, the vibration calibration system based on the computer and the Pulse compares the preset acceleration value with the acceleration value detected and converted by the standard accelerometer, and performs feedback adjustment on the first voltage signal according to the comparison result, so that closed-loop automatic calibration is realized; in addition, the current value of the integrated vibration transmitter is not required to be measured through a digital multimeter, manual intervention is not required to execute operations such as inputting and recording tables, manpower and material resources are saved, meanwhile, the calibration efficiency and accuracy are improved, and errors caused by manpower intervention are avoided.
Furthermore, the temperature compensation correction is introduced in consideration of the fact that the resistance value of the standard resistor is possibly influenced by the temperature, so that the calibration precision is further effectively improved, and the measurement uncertainty introduced by the standard resistor is reduced.
The above-mentioned embodiments are provided to further explain the objects, technical solutions and advantages of the present invention in detail, and it should be understood that the above-mentioned embodiments are only examples of the present invention and are not intended to limit the scope of the present invention. It should be understood that any modifications, equivalents, improvements and the like, which come within the spirit and principle of the invention, may occur to those skilled in the art and are intended to be included within the scope of the invention.
Claims (10)
1. A calibration method of an integrated vibration transmitter based on Pulse is characterized by comprising the following steps:
generating an initial first voltage signal using a vibration calibration system; wherein the vibration calibration system comprises a computer and a Pulse;
amplifying the first voltage signal through a power amplifier so as to enable the vibration table to vibrate; the first voltage signal is amplified and then used for driving the vibration table;
detecting the amplitude of vibration of the vibration table through a standard accelerometer to obtain a second voltage signal;
converting the second voltage signal into an acceleration value through a first multiplier, and comparing the acceleration value obtained through conversion with a preset acceleration value through a comparator, so that the vibration calibration system performs feedback adjustment on the first voltage signal according to a comparison result until the comparison result meets a preset condition;
when the comparison result meets a preset condition, acquiring an output signal of the transmitter to be detected through a vibration calibration system, and realizing calibration of the transmitter to be detected; wherein the output signal is processed by a second multiplier.
2. The calibration method of the Pulse-based integrated vibration transmitter according to claim 1, wherein the output signal is processed by a second multiplier, specifically:
acquiring a first current signal according to the vibration of the vibration table through the transmitter to be detected;
the second multiplier is configured with a standard resistance through which the first current signal is converted into the output signal in voltage.
3. The method of calibrating a Pulse-based integrated vibration transmitter according to claim 2, wherein said converting said first current signal into said output signal represented by a voltage through said reference resistor comprises:
the first current signal I is obtained according to t Conversion to the output signal V:
V＝I t R(1+αT)；
wherein, alpha is the temperature coefficient of the standard resistor, and T is the calibration environment temperature.
4. The method for calibrating a Pulse-based integrated vibration transmitter according to claim 3, wherein the calibration of the transmitter under test is implemented by: calculating calibration characteristic parameters of the transmitter to be detected; the calibration characteristic parameter comprises sensitivity;
the calculation formula of the sensitivity of the detected transmitter is specifically as follows:
wherein S is the sensitivity of the transmitter to be tested, V s Is the voltage signal output by a standard accelerometer, M s Is the sensitivity of a standard accelerometer.
5. The method for calibrating a Pulse-based integrated vibration transmitter according to claim 1, wherein the second voltage signal is converted into an acceleration value by a first multiplier, specifically:
multiplying the second voltage signal by an inverse of the sensitivity of the standard accelerometer to convert the second voltage signal to an acceleration value.
6. The calibration method of the Pulse-based integrated vibration transmitter as claimed in any one of claims 1 to 5, wherein the comparison result is a difference between the converted acceleration value and a preset acceleration value; the preset conditions are specifically as follows: the difference is zero.
7. The calibration device of the integrated vibration transmitter based on Pulse is characterized by comprising a first voltage generation module, a power amplification module, a detection module, a feedback regulation module and a calibration module; wherein the content of the first and second substances,
the first voltage generation module is used for generating an initial first voltage signal by utilizing a vibration calibration system; wherein the vibration calibration system comprises a computer and a Pulse;
the power amplification module is used for amplifying the first voltage signal through a power amplifier so as to enable the vibration table to vibrate; the first voltage signal is amplified and then used for driving the vibration table;
the detection module is used for detecting the amplitude of the vibration table through a standard accelerometer to obtain a second voltage signal;
the feedback adjusting module is used for converting the second voltage signal into an acceleration value through a first multiplier, and comparing the acceleration value obtained through conversion with a preset acceleration value through a comparator, so that the vibration calibration system performs feedback adjustment on the first voltage signal according to a comparison result until the comparison result meets a preset condition;
the calibration module is used for acquiring an output signal of the transmitter to be tested through a vibration calibration system when the comparison result meets a preset condition, so as to realize calibration of the transmitter to be tested; wherein the output signal is processed by a second multiplier.
8. The calibration device for a Pulse-based integrated vibration transmitter according to claim 7, wherein the output signal is processed by a second multiplier, specifically:
acquiring a first current signal according to the vibration of the vibration table through the transmitter to be detected;
the second multiplier is configured with a standard resistance through which the first current signal is converted into the output signal in voltage.
9. The calibration device for a Pulse-based integrated vibration transmitter according to claim 8, wherein the calibration module converts the first current signal into the output signal represented by a voltage through the standard resistor, specifically:
the calibration module is used for calibrating the first current signal I according to the following formula t Conversion to the output signal V:
V＝I t R(1+αT)；
wherein, alpha is the temperature coefficient of the standard resistor, and T is the calibration environment temperature.
10. The calibration apparatus of the Pulse-based integrated vibration transmitter according to claim 9, wherein the calibration module implements calibration of the transmitter under test, and includes: the calibration module calculates calibration characteristic parameters of the transmitter to be tested; the calibration characteristic parameter comprises sensitivity;
the calculation formula of the sensitivity of the detected transmitter is specifically as follows:
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| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: No. 8 Qishan Road, Shiqi Town, Panyu District, Guangzhou City, Guangdong Province, 510000, 150 Applicant after: Radio and TV Measurement and Testing Group Co.,Ltd. Applicant after: GUANGZHOU GRG METROLOGY & TEST (SHANGHAI) CO.,LTD. Address before: 511450 150, No. 8, Qishan Road, Shiqi Town, Panyu District, Guangzhou City, Guangdong Province Applicant before: GUANGZHOU GRG METROLOGY & TEST Co.,Ltd. Applicant before: GUANGZHOU GRG METROLOGY & TEST (SHANGHAI) CO.,LTD. |