CN206114195U - Pressure transmitter's incoming signal self -calibration system - Google Patents
Pressure transmitter's incoming signal self -calibration system Download PDFInfo
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- CN206114195U CN206114195U CN201621035602.1U CN201621035602U CN206114195U CN 206114195 U CN206114195 U CN 206114195U CN 201621035602 U CN201621035602 U CN 201621035602U CN 206114195 U CN206114195 U CN 206114195U
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- pressure transmitter
- intelligent terminal
- calibration
- signal generator
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Abstract
The utility model provides a pressure transmitter's incoming signal self -calibration system, include: intelligent terminal, signal generator, digital multimeter, bear and connect the signal calibration plate of pressure transmitter mainboard who treats the calibration, intelligent terminal and signal generator's input and signal calibration plate are connected, and signal generator's output and signal calibration plate are connected, and the digital multimeter setting is in signal generator feedback signal's transmission channel. The utility model discloses a feedback signal's magnitude of voltage is measured to the digital multimeter, regard feedback signal's magnitude of voltage as incoming signal's standard value, can compensate the maximum measurement accuracy who carries the high pressure changer of ability to the error among the signal model, and, through intelligent terminal control signal generator, digital multimeter and signal calibration plate, realize that the pressure transmitter mainboard of treating the calibration carries out the self -calibration, has shortened the automatic calibration time of every pressure transmitter mainboard to the production efficiency of pressure transmitter mainboard has been improved.
Description
Technical field
The utility model is related to industrial automatic control technology field, and more particularly to a kind of input signal of pressure transmitter is automatic
Calibration system.
Background technology
Pressure transmitter refers to be output as the pressure sensor of standard signal, is that one kind receives pressure variations and turns in proportion
It is changed to the instrument of standard output signals.The physical pressure parameters such as gas, the liquid that it can experience load cell turn
Become the electric signal (such as 4～20mA DC) of standard, carried out with supplying the secondary meters such as indicator alarm, recorder, adjuster
Measurement, instruction and procedure regulation.
Pressure transmitter is widely used in various industrial automatic control environment, is related to water conservancy and water power, and railway traffic is intelligently built
Build, produce numerous industries such as automatic control, Aero-Space, military project, petrochemical industry, oil well, electric power, ship, lathe.Due to pressure transmitter
Measurement range is more and more wider, therefore, to the required precision of pressure transmitter also more and more higher.Pressure transmitter originally is not defeated
Enter signal calibration function, its precision can only achieve 0.1% grade, the school in order to improve the precision of pressure transmitter, to input signal
Standard is requisite link in pressure transmitter production process, and typical calibration process is generally occurred using a series of signal
Device come produce signal and to guarantee produce signal the degree of accuracy, by signal generator produce signal use as exact value, but
The calibration effect of existing calibrating mode is undesirable, and production efficiency is relatively low.
Utility model content
The shortcoming of prior art in view of the above, the purpose of this utility model is provide a kind of pressure transmitter defeated
Enter signal automated calibration system, the automatic calibration to pressure transmitter mainboard input signal can be realized.
For achieving the above object and other related purposes, the utility model provide a kind of input signal of pressure transmitter from
Dynamic calibration system, the system includes：Intelligent terminal, signal generator, digital multimeter, carry and connect pressure to be calibrated and become
Send the signal calibration plate of device mainboard；Wherein, the input and the signal calibration of the intelligent terminal and the signal generator
Plate connects, and the output end of the signal generator is connected with the signal calibration plate, and the digital multimeter is arranged on the letter
In the transmission channel of number generator feedback signal.
Preferably, the system also includes：Support open communication agreement HART of highway addressable remote transducer
The first board；First board of the support HART is connected between the intelligent terminal and the signal calibration plate.
Preferably, the system also includes：Support second board and the 3rd board of general purpose interface bus agreement GPIB；Institute
State and support that second board of GPIB is connected between the intelligent terminal and the signal generator, the 3rd of the support GPIB the
Board is connected between the intelligent terminal and the digital multimeter.
Preferably, the intelligent terminal is realized using computer, panel computer or smart mobile phone.
The input signal automated calibration system of the pressure transmitter that the utility model embodiment is provided, including：Intelligence is eventually
End, signal generator, digital multimeter, the signal calibration plate that carries and connect pressure transmitter mainboard to be calibrated；Wherein, institute
State intelligent terminal to be connected with the input of the signal generator and the signal calibration plate, the output end of the signal generator
It is connected with the signal calibration plate, the digital multimeter is arranged in the transmission channel of the signal generator feedback signal.
Thus, the magnitude of voltage of feedback signal is measured in the utility model embodiment by the digital multimeter, by the feedback signal
Magnitude of voltage as the standard value of input signal, the error in signal model can be compensated, relative in existing system
The signal that the signal generator is produced can farthest improve the survey of pressure transmitter as the standard value of input signal
Accuracy of measurement；Also, by intelligent terminal control signal generator, digital multimeter and signal calibration plate, realize to be calibrated
Pressure transmitter mainboard is calibrated automatically, the automatic prover time of every piece of pressure transmitter mainboard is shortened, so as to improve
The production efficiency of pressure transmitter mainboard；In addition, the system is easy to operate and uses simple.
Description of the drawings
Fig. 1 is shown as the composition structural representation of the input signal automated calibration system of pressure transmitter of the present utility model
Figure.
Specific embodiment
Embodiment of the present utility model is illustrated below by way of specific instantiation, those skilled in the art can be by this theory
Content disclosed by bright book understands easily other advantages of the present utility model and effect.The utility model can also be by addition
Different specific embodiments is carried out or applies, and the every details in this specification can also be based on different viewpoints and answer
With, without departing from it is of the present utility model spirit under carry out various modifications and changes.
Refer to accompanying drawing.It should be noted that the diagram provided in the present embodiment only illustrates in a schematic way this practicality
New basic conception, only shows with relevant component in the utility model rather than according to component during actual enforcement in schema then
Number, shape and size are drawn, and the kenel of each component, quantity and ratio can be a kind of random change during its actual enforcement, and
Its assembly layout kenel is likely to increasingly complex.
Below in conjunction with the accompanying drawings and specific embodiment is further described in detail again to the utility model.
Fig. 1 is the composition structural representation of the input signal automated calibration system of pressure transmitter in the utility model embodiment
Figure, as shown in figure 1, the system includes：Intelligent terminal 100, signal generator 101, digital multimeter 102, carrying and connection are treated
The signal calibration plate 103 of the pressure transmitter mainboard of calibration；
Wherein, the intelligent terminal 100 connects with the input of the signal generator 101 and the signal calibration plate 103
Connect, the output end of the signal generator 101 is connected with the signal calibration plate 103, and the digital multimeter 102 is arranged on institute
In stating the transmission channel of the feedback signal of signal generator 101.
Wherein, the feedback signal is that the input of the signal generator is fed back to by the output end of the signal generator
The signal at end, the feedback signal is the input signal of the pressure transmitter mainboard to be calibrated.
Further, the system also includes：
Support open communication agreement (the Highway Addressable Remote of highway addressable remote transducer
Transducer, HART) the first board 104；First board of the support HART be connected to the intelligent terminal with it is described
Between signal calibration plate, the intelligent terminal is communicated by first board of the support HART with the signal calibration plate
Connection.
In actual applications, the intelligent terminal and the signal standards plate are provided with the interface for supporting HART, described
Intelligent terminal is communicatively coupled by the interface of support HART with first board of the support HART, the signal standards plate
By supporting that the interface of HART is communicatively coupled with first board of the support HART, to realize the intelligent terminal and institute
State the communication connection between signal calibration plate.
Further, the system also includes：
Support general purpose interface bus agreement (General-Purpose Interface Bus, GPIB) the second board and
3rd board；Second board of the support GPIB is connected between the intelligent terminal and the signal generator, the intelligence
Energy terminal is communicatively coupled by second board of the support GPIB with the signal generator；The of the support GPIB
Three boards are connected between the intelligent terminal and the digital multimeter, the intelligent terminal pass through the support GPIB the
Three boards are communicatively coupled with the digital multimeter.
In actual applications, the intelligent terminal, the signal generator and the digital multimeter are provided with support
The interface of GPIB, the intelligent terminal is by supporting that the interface of GPIB carries out communication link with second board of the support GPIB
Connect, the signal generator is communicatively coupled by the interface of support GPIB with second board of the support GPIB, with reality
Existing communication connection between the intelligent terminal and the signal generator.The intelligent terminal by support GPIB interface with
3rd board of the support GPIB is communicatively coupled, and the digital multimeter is by the interface for supporting GPIB and the support
3rd board of GPIB is communicatively coupled, to realize the communication connection between the intelligent terminal and the digital multimeter.
Instrument and meter in the utility model embodiment using general-purpose interface carries out building for system, can reduce the system
System complexity, and the system transplantation is strong.
In actual applications, the intelligent terminal 100 is set using intelligent terminals such as computer, panel computer or smart mobile phones
It is standby to realize, to realize the control to the signal generator, digital multimeter 101 and pressure transmitter mainboard to be calibrated.
Composition structure in the utility model embodiment, based on the input signal automated calibration system of above-mentioned pressure transmitter
And the annexation between device, the operation principle of the system is such：
Before the system is started, manually the pressure transmitter mainboard to be calibrated is accessed into the signal calibration
Plate.
The process that implements of the system is：
The intelligent terminal 100 connects first the power supply of pressure transmitter mainboard to be calibrated, and by gpib interface to
The signal generator 101 sends first and instructs；The signal generator 101 produces signal according to the instruction of the described first instruction
And it is input to signal calibration plate 103；The signal standards plate 103 sends input signal to pressure transmitter master to be calibrated
Plate；The intelligent terminal sends second and instructs by gpib interface to the digital multimeter 102 again, the digital multimeter
102 according to the magnitude of voltage of the feedback signal of the instruction measurement signal generator 101 of the described second instruction and by the feedback
The magnitude of voltage of signal returns to the intelligent terminal 100；The intelligent terminal 100 is by HART interfaces to the signal calibration plate
The 3rd instruction is sent, the signal calibration plate sends the described 3rd instruction to the pressure transmitter mainboard to be calibrated；Institute
The instruction that pressure transmitter mainboard to be calibrated is stated according to the described 3rd instruction is by the pressure transmitter mainboard to be calibrated
The analog quantity of input signal is converted into digital quantity, and the digital quantity is returned to into the intelligence eventually by the signal calibration plate
End；The intelligent terminal calculates amendment system according to the corresponding digital quantity of magnitude of voltage and the feedback signal of the feedback signal
Number, and the correction factor is sent to by signal calibration plate 103 by HART interfaces；The signal calibration plate 103 is repaiied described
Positive coefficient sends pressure transmitter mainboard to be calibrated to；The pressure transmitter mainboard to be calibrated writes the correction factor
Enter electric erazable programmable memory on itself mainboard (Electrically Erasable Programmable Memory,
EEPROM in), with according to the correction factor calibration input signal；The pressure transmitter mainboard calibration to be calibrated is completed
Afterwards, calibration is completed into information by described information calibration plate 103 and returns to the intelligent terminal 100；The basis of the intelligent terminal 100
The information that calibration is completed cuts off the power supply of the calibrated pressure transmitter mainboard for completing.
The pressure transmitter mainboard that calibration is completed manually is removed, next piece of pressure transmitter mainboard to be calibrated is connected,
It is again started up the system.
In the utility model embodiment, the item argument of existing system and the system is tested respectively, the survey for obtaining
Test result data are as shown in table 1：
| Item argument | Existing system | The system |
| Certainty of measurement | 0.1% | 0.05% |
| Prover time/block | 3 minutes | 1 minute |
| Year output | 20000 | 60000 |
Table 1
As can be seen here, existing system is calibrated one piece of pressure transmitter mainboard and is needed 3 minutes, and uses the system to calibrate one piece of pressure
Power transmitter mainboard is only needed 1 minute, therefore the system is relative to existing system, shortens the automatic of every piece of pressure transmitter mainboard
Prover time, so as to improve the production efficiency of pressure transmitter mainboard；Also, the system is relative to existing system certainty of measurement
0.05% grade is brought up to by 0.1% grade, so as to farthest improve the certainty of measurement of pressure transmitter mainboard.
It should be noted that：The utility model embodiment can be with the automatic calibration logic of the input signal of combination pressure transmitter
Flow process is realizing, but the utility model is protection hardware system, and the input signal of the non-protected pressure transmitter is calibrated automatically
Method flow.
In sum, the automated calibration system of the input signal of the pressure transmitter that the utility model embodiment is provided,
Compared with prior art, following progress is achieved：
(1) in the utility model embodiment, after pressure transmitter mainboard to be calibrated is accessed into signal calibration plate, start
The system passes through intelligent terminal control signal generator, numeral to electricity on pressure transmitter mainboard to be calibrated, the system
Universal meter and signal calibration plate, are calibrated automatically to the pressure transmitter mainboard to be calibrated, it can be seen that, the system is certainly
Dynamicization degree is higher, easy to operate and uses simple.
(2) the utility model embodiment measures the magnitude of voltage of feedback signal by the digital multimeter, by the feedback
The magnitude of voltage of signal can be compensated, relative to existing system as the standard value of input signal to the error in signal model
The signal for producing the signal generator in system can farthest improve pressure transmitter as the standard value of input signal
Certainty of measurement.
(3) the utility model embodiment passes through intelligent terminal control signal generator, digital multimeter and signal calibration plate
Realization is calibrated automatically to pressure transmitter mainboard to be calibrated, when shortening the automatic calibration of every piece of pressure transmitter mainboard
Between, so as to improve the production efficiency of pressure transmitter mainboard.
Above-described embodiment only illustrative principle of the present utility model and its effect are new not for this practicality is limited
Type.Any person skilled in the art all can be carried out under without prejudice to spirit and the scope of the present utility model to above-described embodiment
Modifications and changes.Therefore, such as those of ordinary skill in the art without departing from the essence disclosed in the utility model
All equivalent modifications completed under god and technological thought or change, should be covered by claim of the present utility model.
Claims (4)
1. the input signal automated calibration system of a kind of pressure transmitter, it is characterised in that the system includes：Intelligent terminal,
Signal generator, digital multimeter, the signal calibration plate for carrying and connecting pressure transmitter mainboard to be calibrated；Wherein, it is described
Intelligent terminal is connected with the input of the signal generator and the signal calibration plate, the output end of the signal generator with
The signal calibration plate connection, the digital multimeter is arranged in the transmission channel of the signal generator feedback signal.
2. system according to claim 1, it is characterised in that the system also includes：Support addressable remote
First board of open communication agreement HART of high-speed channel；First board of the support HART is connected to the intelligent terminal
Between the signal calibration plate.
3. system according to claim 2, it is characterised in that the system also includes：Support general purpose interface bus agreement
Second board and the 3rd board of GPIB；Second board of the support GPIB is connected to the intelligent terminal and sends out with the signal
Between raw device, the 3rd board of the support GPIB is connected between the intelligent terminal and the digital multimeter.
4. the system according to any one of claims 1 to 3, it is characterised in that the intelligent terminal adopts computer, flat board
Computer or smart mobile phone are realized.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621035602.1U CN206114195U (en) | 2016-08-31 | 2016-08-31 | Pressure transmitter's incoming signal self -calibration system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621035602.1U CN206114195U (en) | 2016-08-31 | 2016-08-31 | Pressure transmitter's incoming signal self -calibration system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206114195U true CN206114195U (en) | 2017-04-19 |
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ID=58519375
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621035602.1U Active CN206114195U (en) | 2016-08-31 | 2016-08-31 | Pressure transmitter's incoming signal self -calibration system |
Country Status (1)
| Country | Link |
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| CN (1) | CN206114195U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112735399A (en) * | 2020-12-01 | 2021-04-30 | 西安中星测控有限公司 | Transmitter voice calibration device and method |
| CN112827655A (en) * | 2021-01-06 | 2021-05-25 | 珠海格力电器股份有限公司 | Dust removal module calibration method, device and equipment |
-
2016
- 2016-08-31 CN CN201621035602.1U patent/CN206114195U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112735399A (en) * | 2020-12-01 | 2021-04-30 | 西安中星测控有限公司 | Transmitter voice calibration device and method |
| CN112735399B (en) * | 2020-12-01 | 2024-04-26 | 西安中星测控有限公司 | Transducer voice calibration device and method |
| CN112827655A (en) * | 2021-01-06 | 2021-05-25 | 珠海格力电器股份有限公司 | Dust removal module calibration method, device and equipment |
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