CN211477498U - Vacuum recorder - Google Patents
Vacuum recorder Download PDFInfo
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- CN211477498U CN211477498U CN202020245830.1U CN202020245830U CN211477498U CN 211477498 U CN211477498 U CN 211477498U CN 202020245830 U CN202020245830 U CN 202020245830U CN 211477498 U CN211477498 U CN 211477498U
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Abstract
The embodiment of the utility model discloses vacuum recorder. The vacuum recorder comprises a measured meter signal interface, a gas circuit interface, a standard vacuum sensor, a controller and a signal acquisition circuit, wherein the measured meter signal interface is used for connecting an output interface of a measured absolute pressure transmitter, the gas circuit interface is used for connecting a measured pipeline, the standard vacuum sensor is electrically connected with a first input end of the signal acquisition circuit, the measured meter signal interface is electrically connected with a second input end of the signal acquisition circuit, and the controller is electrically connected with an output end of the signal acquisition circuit. The technical scheme of the utility model the output signal according to signal acquisition circuit through the controller generates the vacuum detection data, realizes the accurate vacuum data who gathers the on-the-spot technology section.
Description
Technical Field
The embodiment of the utility model provides a relate to vacuum test technical field, especially relate to a vacuum recorder.
Background
The steel smelting process is often carried out under vacuum negative pressure, and the vacuum degree plays an important role in the quality of finished products in the smelting process.
At present, most of smelting processes adopt an absolute pressure transmitter to measure the field vacuum degree, and output signals of the absolute pressure transmitter are used for regulating the vacuum degree through a feedback regulating system. If the measurement accuracy of the on-site vacuum transmitter is reduced or the system pipeline is blocked, the product quality can be influenced. Because the environment of a smelting field is severe, dust, high temperature, inconvenient power supply and the like, the absolute pressure transmitter of the existing metal smelting field measuring point is periodically sent to a calibration department to calibrate the accuracy index, and the problems that the accuracy index calibration of the absolute pressure transmitter of the metal smelting field measuring point is lagged, the absolute pressure transmitter is inaccurate in the field vacuum degree measuring data and affects the product quality exist.
How to accurately acquire the vacuum degree data of the field process section becomes a problem to be urgently solved in the industry.
SUMMERY OF THE UTILITY MODEL
The embodiment of the utility model provides a vacuum recorder to realize accurate collection field technology section vacuum data.
In order to realize the technical problem, the utility model discloses a following technical scheme:
the embodiment of the utility model provides a vacuum recorder, include: the device comprises a signal interface of a measured meter, a gas path interface, a standard vacuum sensor, a controller and a signal acquisition circuit;
the signal interface of the measured meter is used for connecting the output interface of the measured absolute pressure transmitter;
the gas path interface is used for connecting a measured pipeline;
the standard vacuum sensor is electrically connected with a first input end of the signal acquisition circuit;
the signal interface of the measured meter is electrically connected with the second input end of the signal acquisition circuit;
the controller is electrically connected with the output end of the signal acquisition circuit.
Furthermore, the signal acquisition circuit comprises a signal conditioning unit and an A/D conversion unit;
the first input end of the signal conditioning unit is electrically connected with the output end of the standard vacuum sensor; the second input end of the signal conditioning unit is electrically connected with the signal interface of the measured meter;
the A/D conversion unit is electrically connected with the output end of the signal conditioning unit and the controller respectively.
Further, the vacuum recorder also comprises a reference table,
the input interface of the reference meter is connected with the gas circuit interface;
the output interface of the reference table is electrically connected with the controller.
Furthermore, the vacuum recorder also comprises a quick connector hoop,
the gas circuit interface is connected with the pipeline to be tested through a quick connector clamp.
Furthermore, the vacuum recorder also comprises a charging and discharging circuit, and the charging and discharging circuit is electrically connected with the controller.
Furthermore, the vacuum recorder also comprises a display module, and the display module is electrically connected with the controller.
Furthermore, the vacuum recorder also comprises a magnetic switch,
the display module is electrically connected with the controller through the magnetic switch, and the magnetic switch is used for connecting the controller with the display module after being attracted.
Furthermore, the vacuum recorder also comprises a shell, and the display module is arranged in the shell;
the shell comprises an end cover, one end of the end cover is movably connected with the shell,
the display module is opposite to the end cover of the shell.
Further, the vacuum recorder also comprises a Bluetooth module, and the Bluetooth module is electrically connected with the controller.
Furthermore, the vacuum recorder also comprises a storage module, and the storage module is electrically connected with the controller.
The embodiment of the utility model provides a vacuum recorder is including being surveyed table signal interface, the gas circuit interface, standard vacuum sensor, controller and signal acquisition circuit, wherein being surveyed table signal interface and being used for connecting the output interface who is surveyed the absolute pressure changer, the gas circuit interface is used for connecting the pipeline of being surveyed, standard vacuum sensor is connected with signal acquisition circuit's first input electricity, be surveyed table signal interface and signal acquisition circuit's second input electricity are connected, the controller is connected with signal acquisition circuit's output electricity, the controller is used for generating the vacuum detection data according to signal acquisition circuit's output signal, realize the vacuum data of accurate collection field process section, the cost of labor has been reduced when raising the efficiency.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required to be used in the description of the embodiments of the present invention will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the contents of the embodiments of the present invention and the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a vacuum recorder according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of another vacuum recorder provided in the embodiment of the present invention;
fig. 3 is a schematic structural diagram of another vacuum recorder provided by the embodiment of the present invention;
fig. 4 is a schematic structural diagram of another vacuum recorder provided by the embodiment of the present invention;
fig. 5 is a front view of a structure of a vacuum recorder according to an embodiment of the present invention;
fig. 6 is a top view of a structure of a vacuum recorder according to an embodiment of the present invention;
fig. 7 is a left side view of the structure of a vacuum recorder according to an embodiment of the present invention;
fig. 8 is a schematic structural diagram of another vacuum recorder according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
The embodiment of the utility model provides a vacuum recorder. Fig. 1 is a structural schematic diagram of a vacuum recorder that embodiment provides, refer to fig. 1, the utility model provides a vacuum recorder 100 is including being surveyed table signal interface 1, gas circuit interface 2, standard vacuum sensor 3, controller 4 and signal acquisition circuit 5, being surveyed table signal interface 1 and being used for connecting the output interface who is surveyed the absolute pressure changer, gas circuit interface 2 is used for connecting the pipeline that is surveyed, standard vacuum sensor 3 is connected with signal acquisition circuit 5's first input 51 electricity, being surveyed table signal interface 1 and signal acquisition circuit 5's second input 52 electricity and being connected, controller 4 is connected with signal acquisition circuit 5's output 53 electricity.
Specifically, the steel smelting process is often carried out under vacuum negative pressure, the vacuum degree in the smelting process plays an important role in the quality of finished products, and an absolute pressure transmitter is adopted in the smelting process to carry out on-site vacuum degree measurement and carry out feedback regulation on the vacuum degree of a system. The embodiment of the utility model provides a vacuum recorder 100's measured table signal interface 1 and the output interface connection who is surveyed the absolute pressure changer, a current signal for receiving to be surveyed the absolute pressure changer output, current signal's size can be 4 ~ 20mA, and give signal acquisition circuit 5 with current signal output, vacuum recorder 100's gas circuit interface 2 with be surveyed the pipeline and be on-the-spot vacuum pipe connection, standard vacuum sensor 3 is arranged in detecting the vacuum in being surveyed the pipeline, and output voltage signal, voltage signal's size is 0 ~ 5V, and give signal acquisition circuit 5 with voltage signal output, signal acquisition circuit 5 gathers received voltage signal and current signal, after handling, signal after handling exports for controller 4 through signal acquisition circuit 5's output 53. And the controller 4 receives the processed standard signal of the measured absolute pressure transmitter and the standard signal of the standard vacuum sensor 3, compares the processed standard signal of the measured absolute pressure transmitter with the standard signal of the standard vacuum sensor 3, generates vacuum detection data and realizes accurate acquisition of vacuum degree data of the field process section. The vacuum detection data may include a current signal output by the absolute pressure transmitter to be detected, a pressure of the absolute pressure transmitter to be detected, a voltage signal output by the standard vacuum sensor 3, a pressure of the standard vacuum sensor 3, and a difference value between signals corresponding to the absolute pressure transmitter to be detected and the standard vacuum sensor 3.
The controller 4 can adopt a 32-bit ARM single chip microcomputer as a main processor chip, adopt a capacitance thin film type vacuum transmitter of the company Sitt as a standard vacuum sensor 3, and the measurement accuracy of the standard vacuum sensor 3 can reach the reading precision of 0.25%. The signal interface 1 of the measured meter is connected with an output interface of the measured absolute pressure transmitter by adopting a waterproof Glan head, so that the protection grade above IP65 is realized.
The embodiment of the utility model provides a vacuum recorder is including being surveyed table signal interface, the gas circuit interface, standard vacuum sensor, controller and signal acquisition circuit, wherein being surveyed table signal interface and being used for connecting the output interface who is surveyed the absolute pressure changer, the gas circuit interface is used for connecting the pipeline of being surveyed, standard vacuum sensor is connected with signal acquisition circuit's first input electricity, be surveyed table signal interface and signal acquisition circuit's second input electricity and be connected, the controller is connected with signal acquisition circuit's output electricity, the controller is used for generating the vacuum detection data according to signal acquisition circuit's output signal, realize the accurate vacuum data who gathers the on-the-spot technology section.
Optionally, fig. 2 is a schematic structural diagram of another vacuum recorder provided by an embodiment of the present invention, referring to fig. 2, the signal acquisition circuit 5 includes a signal conditioning unit 54 and an a/D conversion unit 55, a first input end 541 of the signal conditioning unit 54 is electrically connected to the output end 31 of the standard vacuum sensor 3, a second input end 542 of the signal conditioning unit 54 is electrically connected to the signal interface 1 of the meter to be tested, and the a/D conversion unit 55 is electrically connected to the output end 543 of the signal conditioning unit 54 and the controller 4, respectively.
Specifically, the signal conditioning unit 54 is configured to condition the voltage signal output by the standard vacuum sensor 3 and the current signal output by the measured absolute pressure transducer into an analog signal that can be recognized by the a/D conversion unit 55, and the a/D conversion unit 55 converts the analog signal into a digital signal and outputs the digital signal to the controller 4. The a/D conversion unit 55 may use an AD conversion chip of type AD7124 for analog-to-digital conversion. An AD7124 high-resolution ADC chip of ADI company can be adopted, the chip has 24bit resolution, the sampling rate can reach 19200SPS, and 4 differential input channels are adopted to ensure the stability and high precision of input signals. The data acquisition circuit board of the controller 4 can adopt ARM-cortex 4 as a main processor due to the consideration of low power consumption and current consumption, and the controller 4 converts the real-time measurement value of the vacuum data according to the range information.
Optionally, fig. 3 is a schematic structural diagram of another vacuum recorder provided in an embodiment of the present invention, referring to fig. 3, the vacuum recorder 100 further includes a reference table 6, an input interface 61 of the reference table 6 is connected to the gas circuit interface 2, and an output interface 62 of the reference table 6 is electrically connected to the controller 4.
Specifically, the controller 4 may communicate with the reference table 6 using UART digital communication to read the real-time measurement values of the reference table 6. The reference table 6 is used for acquiring vacuum pressure with a larger range, the reference table 6 outputs a current signal measured in real time, the controller 4 calculates the pressure of the measured pipeline, namely the current pressure of the vacuum pipeline system, according to the received current signal output by the reference table 6, the controller 4 controls the standard vacuum sensor 3 to start or stop according to the current pressure of the vacuum pipeline system, and when the pressure reaches the working pressure, the standard vacuum sensor 3 is controlled to start.
Optionally, fig. 4 is a schematic structural diagram of another vacuum recorder provided in the embodiment of the present invention, referring to fig. 4, the vacuum recorder 100 further includes a charging and discharging circuit 7, and the charging and discharging circuit 7 is electrically connected to the controller 4.
Specifically, vacuum recorder 100 still includes the 3.6V lithium cell, and charge-discharge circuit 7 converts the voltage of lithium cell into vacuum recorder 100 internal control ware 4 and the power supply of signal acquisition circuit 5, and lithium cell power supply, convenient reuse for vacuum recorder 100 can guarantee the incessant data record more than 30 days, convenient to carry, and small in size need not the outside and provides the power.
Optionally, fig. 5 is a front view of a structure of a vacuum recorder provided by an embodiment of the present invention, fig. 6 is a top view of a structure of a vacuum recorder provided by an embodiment of the present invention, and fig. 7 is a left side view of a structure of a vacuum recorder provided by an embodiment of the present invention, in combination with fig. 4 to fig. 7, the vacuum recorder 100 further includes a display module 8, and the display module 8 is electrically connected with the controller 4.
Specifically, display module 8 shows current measurement situation and record state in real time, display module 8 can adopt the LCD screen, display module 8 is connected with controller 4 electricity, controller 4 control display module 8 shows the current signal of being surveyed the output of absolute pressure changer in real time, the pressure size of being surveyed the absolute pressure changer, the pressure size of standard vacuum sensor 3, the pressure size of reference table 6 to and the difference between the signal that is corresponding with standard vacuum sensor 3 is surveyed the absolute pressure changer.
Optionally, with continued reference to fig. 4, the vacuum recorder 100 further includes a magnetic switch 9, the display module 8 is electrically connected to the controller 4 through the magnetic switch 9, and the magnetic switch 9 is used to connect the controller 4 and the display module 8 after being attracted.
Specifically, for realizing low power consumption, the display module 8 automatically turns off the screen after displaying for 2 minutes, if the display content needs to be checked again, the magnet can be used, the surface of the magnetic switch 9 is shaken, and the controller 4 controls the display module 8 to display the vacuum detection data again after the magnetic switch 9 is attracted.
Optionally, with continued reference to fig. 6, the vacuum recorder 100 further includes a quick connector clip 10, and the air interface 2 is connected to the measured pipeline through the quick connector clip 10.
Specifically, the gas circuit interface 2 is connected with a measured pipeline through the quick connector hoop 10, so that the quick connector hoop 10 can be assembled and disassembled on site conveniently, and the model of the quick connector hoop 10 can be KF16 or KF 25.
Optionally, with continued reference to fig. 6, the vacuum recorder 100 further includes a housing 11, the display module 8 is disposed in the housing 11, the housing 11 includes an end cap 12, one end of the end cap is movably connected to the housing 11, and the display module 8 is opposite to the end cap of the housing 11.
Specifically, the shell 11 adopts the aluminum alloy shell 11, ensures that the complete machine protection level of the vacuum recorder 100 can reach more than IP65, and the vacuum recorder 100 adopts the design of the integral full aluminum alloy shell 11 with the protection level of more than IP65, so that the vacuum recorder 100 has the functions of dust prevention, moisture prevention and the like, and is conveniently used in the working condition environment of dust and moisture.
Optionally, fig. 8 is a schematic structural diagram of another vacuum recorder provided in the embodiment of the present invention, referring to fig. 8, the vacuum recorder 100 further includes a bluetooth module 13, and the bluetooth module 13 is electrically connected to the controller 4.
Specifically, the bluetooth module 13 is electrically connected to the controller 4, and the bluetooth module 13 communicates with an upper computer as an interface for parameter configuration to implement wireless non-contact configuration of parameters. The bluetooth module 13 is convenient for the host computer to read the record data.
Optionally, with continued reference to fig. 8, the vacuum recorder 100 further includes a memory module 14, the memory module 14 being electrically connected to the controller 4.
Specifically, the storage module 14 is electrically connected to the control module for storing vacuum detection data, and the vacuum recorder 100 reserves the large-capacity storage module 14 for recording real-time measurement data, so as to facilitate subsequent laboratory analysis. The storage module 14 may include a built-in SD card and a USB interface, and may be used to record the vacuum detection data compared in the field for subsequent analysis, and periodically write the vacuum detection data into the SD card or the USB disk according to the data recording interval. The derived data is opened by using data analysis software of the vacuum recorder 100 on the upper computer, and two curves can be generated, namely a pressure curve of the absolute pressure transmitter to be detected and a pressure curve of the standard vacuum sensor 3.
Due to process requirements, the measured pressure can have a plurality of pressure increasing and decreasing processes, and due to the fact that the standard vacuum sensor 3 is arranged inside the vacuum recorder 100, pressure data can lag, the difference value analysis is effective after the pressure is stable, a time period can be selected on analysis software, and the difference value in the time period, the minimum difference value, the maximum difference value, the average difference value and other information can be checked. The vacuum recorder 100 has the overall size of 270mm by 192mm, is small in size and convenient to carry on site.
The utility model provides a vacuum recorder makes the on-the-spot vacuum detection data of being surveyed the absolute pressure changer compare for a long time with data record more objective and convenient, has reduced artifical personnel's of patrolling and examining work load, has got rid of the manual work and has compared the human factor of calibration being surveyed the absolute pressure changer in-process. The device can continuously work for one month without manual intervention, and recorded data can be conveniently exported to an upper computer. The vacuum recorder is used for recording vacuum detection data, and the upper computer data analysis software is matched to realize the presentation of information such as tracking record, data comparison, minimum value, maximum value, average difference value and the like, so that the efficiency is improved, and meanwhile, the labor cost is greatly reduced.
It should be noted that the foregoing is only a preferred embodiment of the present invention and the technical principles applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail with reference to the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the scope of the present invention.
Claims (10)
1. A vacuum recorder, comprising: the device comprises a signal interface of a measured meter, a gas path interface, a standard vacuum sensor, a controller and a signal acquisition circuit;
the signal interface of the measured meter is used for connecting an output interface of the measured absolute pressure transmitter;
the gas path interface is used for connecting a measured pipeline;
the standard vacuum sensor is electrically connected with a first input end of the signal acquisition circuit;
the signal interface of the meter to be tested is electrically connected with the second input end of the signal acquisition circuit;
the controller is electrically connected with the output end of the signal acquisition circuit.
2. The vacuum recorder according to claim 1, wherein the signal acquisition circuit comprises a signal conditioning unit and an a/D conversion unit;
the first input end of the signal conditioning unit is electrically connected with the output end of the standard vacuum sensor; the second input end of the signal conditioning unit is electrically connected with the signal interface of the meter to be tested;
the A/D conversion unit is electrically connected with the output end of the signal conditioning unit and the controller respectively.
3. The vacuum recorder according to claim 1, further comprising a reference table,
the input interface of the reference meter is connected with the gas circuit interface;
and the output interface of the reference table is electrically connected with the controller.
4. The vacuum recorder according to claim 1, further comprising a quick connector clip,
the gas circuit interface is connected with the pipeline to be tested through the quick connector clamp.
5. The vacuum recorder according to claim 1, further comprising a charge and discharge circuit electrically connected to the controller.
6. The vacuum recorder according to claim 1, further comprising a display module electrically connected to the controller.
7. The vacuum recorder according to claim 6, further comprising a magnetic switch,
the display module is electrically connected with the controller through the magnetic switch, and the magnetic switch is used for connecting the controller with the display module after being attracted.
8. The vacuum recorder according to claim 6, further comprising a housing, the display module being disposed within the housing;
the shell comprises an end cover, one end of the end cover is movably connected with the shell,
the display module is opposite to the end cover of the shell.
9. The vacuum recorder of claim 1, further comprising a bluetooth module, the bluetooth module being electrically connected to the controller.
10. The vacuum recorder according to claim 1, further comprising a memory module,
the memory module is electrically connected with the controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020245830.1U CN211477498U (en) | 2020-03-03 | 2020-03-03 | Vacuum recorder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020245830.1U CN211477498U (en) | 2020-03-03 | 2020-03-03 | Vacuum recorder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211477498U true CN211477498U (en) | 2020-09-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020245830.1U Active CN211477498U (en) | 2020-03-03 | 2020-03-03 | Vacuum recorder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211477498U (en) |
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2020
- 2020-03-03 CN CN202020245830.1U patent/CN211477498U/en active Active
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