A pressure detection early warning system and device based on visual sensor

Abstract

The present invention relates to the technical field of pressure detection and early warning, and specifically discloses a pressure detection and early warning system and device based on a visual sensor, comprising: a pressure gauge docking installation module, a pressure gauge primary detection module, a pressure gauge secondary detection module, a final detection qualification evaluation module and a database; the present invention transforms a calibration device that was originally operated entirely by manual work into an automated calibration device, and analyzes whether the detection is qualified from two aspects: changes of the pressure gauge over time and changes of the pressure, and at the same time conducts an in-depth analysis of the influence of the tightness of the interface between the pressure gauge and the calibration device on the pressure gauge qualification detection, thereby improving the work efficiency and comprehensiveness of the pressure gauge qualification detection, improving the safety of the pressure gauge detection process, and reducing the error and uncertainty of manual detection, thereby ensuring the reliability of the pressure gauge in practical applications, and improving the safety of the equipment and the economic benefits of the enterprise.

Description

Technical Field

[0001] The present invention relates to the field of pressure detection and early warning technology, and in particular to a pressure detection and early warning system and device based on a visual sensor. Background Art

[0002] Currently, in the inspection of pressure gauges, manual inspection of the entire process is usually adopted, and only one pressure gauge can be inspected at a time. This traditional operation method has low work efficiency and high safety risks, and it is difficult to meet the needs of modern production. Therefore, it is necessary to study an automated pressure calibration device to solve the problems of low efficiency and low safety factor of manual inspection of pressure gauges in the existing technology.

[0003] The following problems still exist in the prior art: 1. Manual inspection of the pressure gauge throughout the entire process has low work efficiency and high safety risks. At the same time, manual inspection increases the error of the inspection results.

[0004] 2. When analyzing whether the pressure gauge is qualified, the qualification is not analyzed from two aspects: the change of the pressure gauge over time and the change of pressure. This reduces the comprehensiveness of the pressure gauge qualification test analysis, fails to ensure the reliability of the pressure gauge, and reduces the safety of the equipment and the economic benefits of the enterprise.

[0005] 3. Failure to conduct an in-depth analysis of the impact of the tightness of the interface between the pressure gauge and the calibration device on the pressure gauge qualification test, which reduces the accuracy of the pressure gauge qualification test, increases the risk and cost of the testing process, and fails to ensure the accuracy of the pressure gauge in actual use. Summary of the invention

[0006] In view of this, in order to solve the problems raised in the above background technology, a pressure detection and early warning system based on a visual sensor is proposed.

[0007] The objectives of the present invention can be achieved through the following technical solutions: In the first aspect, the present invention provides a pressure detection and early warning system based on a visual sensor, including: a pressure gauge docking and installation module, used to load each pressure gauge to be inspected in a target batch onto a target calibration device, and the target calibration device automatically pressurizes. When each pressure gauge to be inspected reaches a set pressure value, the target calibration device stops pressurizing, collects the pressure values ​​corresponding to each pressure gauge to be inspected at each monitoring time point, and collects the number of bubbles and the volume of each bubble generated at the interface between each pressure gauge to be inspected and the target calibration device at each monitoring time point.

[0008] The pressure gauge initial inspection module is used to evaluate whether the corresponding inspection of each pressure gauge to be inspected in the target batch is qualified over time, mark the pressure gauges to be inspected that fail the inspection as early as possible, mark the pressure gauges to be inspected that pass the inspection as the secondary pressure gauges to be inspected, and execute the pressure gauge secondary inspection module.

[0009] The pressure gauge secondary detection module is used to pressurize each secondary pressure gauge to be inspected to each detection pressure value in turn through the target calibration device, keep the monitoring time period unchanged, and collect the detection information of each secondary pressure gauge to be inspected after the corresponding monitoring time period at each detection pressure value.

[0010] The final test qualification assessment module is used to evaluate whether the test corresponding to the pressure change of each secondary pressure gauge to be inspected in the target batch is qualified, and the secondary pressure gauge to be inspected that fails the test will be marked for early warning, and the secondary pressure gauge to be inspected that passes the test will be recorded as a qualified pressure gauge.

[0011] The database is used to store the allowable pressure deviation range of the pressure gauge setting and the pressure detection range that the pressure gauge needs to withstand to meet the qualified detection requirements.

[0012] The specific process of evaluating whether the corresponding detection of each pressure gauge to be tested in the target batch is qualified over time is as follows: A1, based on the pressure value corresponding to each pressure gauge to be tested at each monitoring time point, calculate the pressure compliance of each pressure gauge to be tested respectively. and pressure fluctuation ,in, Indicates the number of the pressure gauge to be inspected. .

[0013] A2. Based on the number of bubbles and the volume of each bubble generated at each monitoring time point at the interface between each pressure gauge to be tested and the target calibration device, set the detection qualification influencing factor of each pressure gauge to be tested. .

[0014] A3. Calculate the test qualification of each pressure gauge to be tested as time changes , ,in, and They represent the weights of the set pressure compliance and pressure fluctuation over time, respectively. .

[0015] A4. Compare the detection qualification degree of each pressure gauge to be tested as it changes with time with the detection qualification degree of the set reference as it changes with time. If the detection qualification degree of a pressure gauge to be tested as it changes with time is greater than or equal to the detection qualification degree of the set reference as it changes with time, it means that the detection of the pressure gauge to be tested as it changes with time is qualified; otherwise, it means that the detection of the pressure gauge to be tested as it changes with time is unqualified.

[0016] The specific process of calculating the pressure compliance of each pressure gauge to be tested is as follows: B1. Subtract the pressure value corresponding to each pressure gauge to be tested at each monitoring time point from the set pressure value to obtain the pressure deviation corresponding to each pressure gauge to be tested at each monitoring time point, and compare it with the allowable pressure deviation range of the pressure gauge setting stored in the database.

[0017] B2. If the pressure deviations of a pressure gauge to be inspected at each monitoring time point are all within the permitted pressure deviation range set by the pressure gauge, the pressure reaching the calibration level of the pressure gauge to be inspected is recorded as If the pressure deviation corresponding to any monitoring time point in a pressure gauge to be inspected is not within the permitted pressure deviation range set by the pressure gauge, the pressure reaching the calibration level of the pressure gauge to be inspected is recorded as , thus obtaining the pressure reaching the calibration value of each pressure gauge to be inspected , The value of or ,in, .

[0018] The specific process of calculating the pressure fluctuation of each pressure gauge to be tested is as follows: C1. Extract the maximum value and the minimum value from the pressure values ​​corresponding to each pressure gauge to be tested at each monitoring time point, and record them as and .

[0019] C2. Calculate the pressure fluctuation of each pressure gauge to be inspected , ,in, Indicates the pressure extreme value difference of the set reference.

[0020] The specific process of setting the influencing factor of the inspection qualification of each pressure gauge to be inspected is as follows: D1, based on the number of bubbles and the volume of each bubble generated at the interface between each pressure gauge to be inspected and the target inspection device at each monitoring time point, calculate the interface tightness corresponding to each pressure gauge to be inspected at each monitoring time point ,in, Indicates the number of the monitoring time point, .

[0021] D2. Using the monitoring time point as the horizontal coordinate and the interface tightness as the vertical coordinate, construct the interface tightness deviation curve of each pressure gauge to be inspected, and locate the slope value from the curve as the interface tightness growth rate of each pressure gauge to be inspected, and mark it as .

[0022] D3. Set the influencing factors of the inspection qualification of each pressure gauge to be inspected , ,in, represents a natural constant, Indicates the interface tightness growth rate of the set reference.

[0023] The detection information includes a pressure value and the number of bubbles generated at the interface and the volume of each bubble.

[0024] The specific process of evaluating whether each secondary pressure gauge to be inspected in the target batch is qualified in the detection corresponding to the pressure change is: E1. Extracting the pressure value and the number of bubbles generated at the interface and the volume of each bubble from the detection information of each secondary pressure gauge to be inspected after the corresponding monitoring time period at each detection pressure value.

[0025] E2. Calculate the pressure tolerance of each secondary pressure gauge to be inspected ,in, Indicates the number of the secondary pressure gauge to be inspected. .

[0026] E3. Based on the number of bubbles and the volume of each bubble generated at the interface of each secondary pressure gauge after the corresponding monitoring period at each detection pressure value, set the detection qualification influencing factor of each secondary pressure gauge to be inspected. .

[0027] E4. Calculate the test qualification of each secondary pressure gauge to be tested as the pressure changes , ,in, Indicates the pressure tolerance level of the set reference.

[0028] E5. Compare the qualified degree of detection of each secondary pressure gauge to be inspected as the pressure changes with the qualified degree of detection of the set reference as the pressure changes. If the qualified degree of detection of a secondary pressure gauge to be inspected as the pressure changes is greater than or equal to the qualified degree of detection of the set reference as the pressure changes, it means that the detection of the secondary pressure gauge to be inspected as the pressure changes is qualified; otherwise, it means that the detection of the secondary pressure gauge to be inspected as the pressure changes is unqualified.

[0029] The specific process of calculating the pressure tolerance qualification of each secondary pressure gauge to be inspected is as follows: F1. Subtract the pressure value of each secondary pressure gauge to be inspected after the corresponding monitoring period at each detection pressure value from its corresponding detection pressure value to obtain the pressure change value of each secondary pressure gauge to be inspected after the corresponding monitoring period at each detection pressure value, and compare it with the pressure deviation range allowed by the pressure gauge setting stored in the database. If the pressure change value of a secondary pressure gauge to be inspected after the corresponding monitoring period at a certain detection pressure value is not within the pressure deviation range allowed by the pressure gauge setting, then the detection pressure value is recorded as an abnormal detection pressure value, and the abnormal detection pressure values ​​of each secondary pressure gauge to be inspected are counted.

[0030] F2. Compare the abnormal detection pressure values ​​of each secondary pressure gauge to be inspected with the pressure detection range required to be borne by the pressure gauge inspection qualified regulations stored in the database. If an abnormal detection pressure value of a secondary pressure gauge to be inspected is within the pressure detection range required to be borne by the pressure gauge inspection qualified regulations, the corresponding pressure tolerance qualification of the secondary pressure gauge to be inspected is recorded as If the abnormal detection pressure values ​​of a secondary pressure gauge to be inspected are not within the pressure detection range required by the pressure gauge inspection qualification regulations, the corresponding pressure tolerance qualification of the secondary pressure gauge to be inspected is recorded as , thus obtaining the corresponding pressure tolerance of each secondary pressure gauge to be inspected , The value of or , .

[0031] The specific process of setting the influencing factor of the test qualification of each secondary pressure gauge to be tested is as follows: G1. Record the number of bubbles generated at the interface of each secondary pressure gauge to be tested after the corresponding monitoring time period at each test pressure value as ,in, Indicates the number of the detected pressure value. .

[0032] G2. Extract the maximum value from the volume of bubbles generated at the interface of each secondary pressure gauge after the corresponding monitoring period at each detection pressure value, and record it as .

[0033] G3. Set the influencing factors of the inspection qualification of each secondary pressure gauge to be inspected , ,in, and Respectively represent the number of bubbles and volume of bubbles set as reference, Indicates the number of detection pressure value groups.

[0034] The second aspect of the present invention provides a device, which includes a processor, a memory and a communication bus. The memory stores a computer-readable program that can be executed by the processor. The communication bus realizes the connection and communication between the processor and the memory. When the processor executes the computer-readable program, the pressure detection and early warning system is realized.

[0035] Compared with the prior art, the embodiments of the present invention have at least the following advantages or beneficial effects: (1) The present invention improves the efficiency of pressure gauge qualification inspection and the safety of pressure gauge inspection process by transforming the original calibration device that was entirely operated manually into an automated calibration device, while reducing the error of manual inspection.

[0036] (2) The present invention improves the comprehensiveness of the pressure gauge qualification test analysis by analyzing whether the pressure gauge is qualified from two aspects: the change with time and the change with pressure, thereby ensuring the reliability of the pressure gauge, improving the safety of the equipment and the economic benefits of the enterprise.

[0037] (3) The present invention improves the accuracy of pressure gauge qualification testing, reduces the risks and costs in the testing process, and ensures the accuracy of the pressure gauge in actual use by conducting an in-depth analysis of the effect of the tightness of the interface between the pressure gauge and the calibration device on the pressure gauge qualification test. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0039] Figure 1 It is a schematic diagram of the system module structure connection of the present invention.

[0040] Figure 2 The figure is a schematic diagram of the structure of a device of the present invention.

[0041] Figure 3 It is a schematic diagram of the connection between the pressure gauge to be inspected and the inspection device of the present invention.

[0042] Description of the drawings: 1. Pressure gauge to be inspected, 2. Interface between pressure gauge to be inspected and calibration device, 3. Calibration device. DETAILED DESCRIPTION

[0043] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0044] See also Figure 1 As shown, the present invention provides a pressure detection and early warning system based on a visual sensor, comprising: a pressure gauge docking installation module, a pressure gauge primary detection module, a pressure gauge secondary detection module, a final detection qualification evaluation module and a database.

[0045] The pressure gauge docking installation module is connected to the pressure gauge primary detection module, the pressure gauge primary detection module is connected to the pressure gauge secondary detection module, the pressure gauge secondary detection module is connected to the final detection qualification evaluation module, and both the pressure gauge primary detection module and the final detection qualification evaluation module are connected to the database.

[0046] See also Figure 3 As shown, the pressure gauge docking installation module is used to load each pressure gauge to be inspected in the target batch onto the target calibration device, and the target calibration device automatically pressurizes. When each pressure gauge to be inspected reaches the set pressure value, the target calibration device stops pressurizing, collects the pressure value corresponding to each pressure gauge to be inspected at each monitoring time point, and collects the number of bubbles and the volume of each bubble generated at the interface between each pressure gauge to be inspected and the target calibration device at each monitoring time point.

[0047] It should be noted that the pressure values ​​corresponding to the pressure gauges to be inspected at each monitoring time point are acquired from images captured by the installed visual sensors.

[0048] It should also be noted that the method for collecting the number of bubbles and the volume of each bubble generated at the interface between each pressure gauge to be inspected and the target calibration device at each monitoring time point is: using a visual sensor to continuously shoot the interface between the pressure gauge and the target calibration device to obtain image data at each monitoring time point, performing pre-processing operations such as denoising and contrast enhancement on the collected images to improve the accuracy of bubble detection, and using an image processing algorithm to extract the characteristics of the bubbles, including the bubble contour, area (which can be converted into volume, which needs to be converted in combination with the pressure gauge interface size), number, etc. The bubble contour in the image is identified by the image processing algorithm, and the number of contours is counted to obtain the number of bubbles, and the bubble volume is calculated by the image processing algorithm.

[0049] The pressure gauge primary detection module is used to evaluate whether the corresponding detection of each pressure gauge to be inspected in the target batch is qualified as time goes by, mark the pressure gauges to be inspected that fail the detection and give an early warning, mark the pressure gauges to be inspected that pass the detection as the secondary pressure gauges to be inspected, and execute the pressure gauge secondary detection module.

[0050] In a specific embodiment of the present invention, the specific process of evaluating whether the corresponding detection of each pressure gauge to be tested in the target batch is qualified over time is as follows: A1, based on the pressure value corresponding to each pressure gauge to be tested at each monitoring time point, respectively calculate the pressure compliance of each pressure gauge to be tested and pressure fluctuation ,in, Indicates the number of the pressure gauge to be inspected. .

[0051] In a specific embodiment of the present invention, the specific process of calculating the pressure compliance of each pressure gauge to be inspected is: B1. Subtract the pressure value corresponding to each pressure gauge to be inspected at each monitoring time point from the set pressure value to obtain the pressure deviation corresponding to each pressure gauge to be inspected at each monitoring time point, and compare it with the allowable pressure deviation range of the pressure gauge setting stored in the database.

[0052] B2. If the pressure deviations of a pressure gauge to be inspected at each monitoring time point are all within the permitted pressure deviation range set by the pressure gauge, the pressure reaching the calibration level of the pressure gauge to be inspected is recorded as If the pressure deviation corresponding to any monitoring time point in a pressure gauge to be inspected is not within the permitted pressure deviation range set by the pressure gauge, the pressure reaching the calibration level of the pressure gauge to be inspected is recorded as , thus obtaining the pressure reaching the calibration value of each pressure gauge to be inspected , The value of or ,in, .

[0053] In a specific embodiment of the present invention, The value of is 1. The value of is 0.

[0054] In a specific embodiment of the present invention, the specific process of calculating the pressure fluctuation of each pressure gauge to be tested is as follows: C1, extracting the maximum value and the minimum value from the pressure values ​​corresponding to each pressure gauge to be tested at each monitoring time point, and recording them as and .

[0055] C2. Calculate the pressure fluctuation of each pressure gauge to be inspected , ,in, Indicates the pressure extreme value difference of the set reference.

[0056] A2. Based on the number of bubbles and the volume of each bubble generated at each monitoring time point at the interface between each pressure gauge to be tested and the target calibration device, set the detection qualification influencing factor of each pressure gauge to be tested. .

[0057] In a specific embodiment of the present invention, the specific process of setting the detection qualification influencing factor of each pressure gauge to be tested is as follows: D1, based on the number of bubbles and the volume of each bubble generated at the interface between each pressure gauge to be tested and the target calibration device at each monitoring time point, calculate the interface tightness corresponding to each pressure gauge to be tested at each monitoring time point ,in, Indicates the number of the monitoring time point, .

[0058] It should be noted that the specific process of calculating the interface tightness of each pressure gauge to be tested at each monitoring time point is as follows: the number of bubbles generated at the interface between each pressure gauge to be tested and the target calibration device at each monitoring time point is recorded as .

[0059] The maximum value is extracted from the volume of each bubble generated at each monitoring time point at the interface between each pressure gauge to be tested and the target calibration device, and recorded as .

[0060] Calculate the interface tightness of each pressure gauge to be inspected at each monitoring time point , ,in, and They respectively represent the number of bubbles at the interface and the volume of bubbles at the interface of the set reference.

[0061] D2. Using the monitoring time point as the horizontal coordinate and the interface tightness as the vertical coordinate, construct the interface tightness deviation curve of each pressure gauge to be inspected, and locate the slope value from the curve as the interface tightness growth rate of each pressure gauge to be inspected, and mark it as .

[0062] D3. Set the influencing factors of the inspection qualification of each pressure gauge to be inspected , ,in, represents a natural constant, Indicates the interface tightness growth rate of the set reference.

[0063] The embodiment of the present invention improves the accuracy of the pressure gauge qualification test, reduces the risks and costs in the testing process, and ensures the accuracy of the pressure gauge in actual use by conducting an in-depth analysis of the impact of the tightness of the interface between the pressure gauge and the calibration device on the pressure gauge qualification test.

[0064] A3. Calculate the test qualification of each pressure gauge to be tested as time changes , ,in, and They represent the weights of the set pressure compliance and pressure fluctuation over time, respectively. .

[0065] In a specific embodiment of the present invention, The setting value of is 0.5. The setting value is 0.5. In practical applications, when calculating the detection qualification of each pressure gauge to be inspected over time, the pressure compliance and pressure fluctuation need to be comprehensively analyzed, and the two complement each other.

[0066] A4. Compare the detection qualification degree of each pressure gauge to be tested as it changes with time with the detection qualification degree of the set reference as it changes with time. If the detection qualification degree of a pressure gauge to be tested as it changes with time is greater than or equal to the detection qualification degree of the set reference as it changes with time, it means that the detection of the pressure gauge to be tested as it changes with time is qualified; otherwise, it means that the detection of the pressure gauge to be tested as it changes with time is unqualified.

[0067] The pressure gauge secondary detection module is used to pressurize each secondary pressure gauge to be inspected to each detection pressure value in turn through a target calibration device, keep the monitoring time period unchanged, and collect the detection information of each secondary pressure gauge to be inspected after the corresponding monitoring time period at each detection pressure value.

[0068] In a specific embodiment of the present invention, the detection information includes a pressure value and a corresponding number of bubbles generated at the interface and a volume of each bubble.

[0069] It should be noted that the pressure value and the corresponding number of bubbles generated at the interface and the volume of each bubble are consistent with the collection method mentioned above and will not be repeated here.

[0070] The final inspection qualified evaluation module is used to evaluate whether the inspection corresponding to the pressure change of each secondary inspection pressure gauge in the target batch is qualified, mark the secondary inspection pressure gauges that fail the inspection as an early warning, and mark the secondary inspection pressure gauges that pass the inspection as qualified pressure gauges.

[0071] In a specific embodiment of the present invention, the specific process of evaluating whether the detection of each secondary pressure gauge to be inspected in the target batch as the pressure changes is qualified is: E1. Extracting the pressure value and the number of bubbles generated at the interface and the volume of each bubble from the detection information of each secondary pressure gauge to be inspected after the corresponding monitoring time period at each detection pressure value.

[0072] E2. Calculate the pressure tolerance of each secondary pressure gauge to be inspected ,in, Indicates the number of the secondary pressure gauge to be inspected. .

[0073] In a specific embodiment of the present invention, the specific process of calculating the pressure tolerance qualification of each secondary pressure gauge to be inspected is as follows: F1. Subtract the pressure value of each secondary pressure gauge to be inspected after the corresponding monitoring time period at each detection pressure value from its corresponding detection pressure value to obtain the pressure change value of each secondary pressure gauge to be inspected after the corresponding monitoring time period at each detection pressure value, and compare it with the pressure deviation range allowed by the pressure gauge setting stored in the database. If the pressure change value of a secondary pressure gauge to be inspected after the corresponding monitoring time period at a certain detection pressure value is not within the pressure deviation range allowed by the pressure gauge setting, then the detection pressure value is recorded as an abnormal detection pressure value, and the abnormal detection pressure values ​​of each secondary pressure gauge to be inspected are counted.

[0074] F2. Compare the abnormal detection pressure values ​​of each secondary pressure gauge to be inspected with the pressure detection range required to be borne by the pressure gauge inspection qualified regulations stored in the database. If an abnormal detection pressure value of a secondary pressure gauge to be inspected is within the pressure detection range required to be borne by the pressure gauge inspection qualified regulations, the corresponding pressure tolerance qualification of the secondary pressure gauge to be inspected is recorded as If the abnormal detection pressure values ​​of a secondary pressure gauge to be inspected are not within the pressure detection range required by the pressure gauge inspection qualification regulations, the corresponding pressure tolerance qualification of the secondary pressure gauge to be inspected is recorded as , thus obtaining the corresponding pressure tolerance of each secondary pressure gauge to be inspected , The value of or , .

[0075] In a specific embodiment of the present invention, The value of is 1. The value of is 0.

[0076] E3. Based on the number of bubbles and the volume of each bubble generated at the interface of each secondary pressure gauge after the corresponding monitoring period at each detection pressure value, set the detection qualification influencing factor of each secondary pressure gauge to be inspected. .

[0077] In a specific embodiment of the present invention, the specific process of setting the detection qualification influencing factor of each secondary pressure gauge to be inspected is as follows: G1, the number of bubbles generated at the interface of each secondary pressure gauge to be inspected after the corresponding monitoring time period at each detection pressure value is recorded as ,in, Indicates the number of the detected pressure value. .

[0078] G2. Extract the maximum value from the volume of bubbles generated at the interface of each secondary pressure gauge after the corresponding monitoring period at each detection pressure value, and record it as .

[0079] G3. Set the influencing factors of the inspection qualification of each secondary pressure gauge to be inspected , ,in, and Respectively represent the number of bubbles and volume of bubbles set as reference, Indicates the number of detection pressure value groups.

[0080] E4. Calculate the test qualification of each secondary pressure gauge to be tested as the pressure changes , ,in, Indicates the pressure tolerance level of the set reference.

[0081] E5. Compare the qualified degree of detection of each secondary pressure gauge to be inspected as the pressure changes with the qualified degree of detection of the set reference as the pressure changes. If the qualified degree of detection of a secondary pressure gauge to be inspected as the pressure changes is greater than or equal to the qualified degree of detection of the set reference as the pressure changes, it means that the detection of the secondary pressure gauge to be inspected as the pressure changes is qualified; otherwise, it means that the detection of the secondary pressure gauge to be inspected as the pressure changes is unqualified.

[0082] The embodiment of the present invention improves the comprehensiveness of the pressure gauge qualification detection and analysis by analyzing whether the pressure gauge is qualified from two aspects: changes with time and changes with pressure, thereby ensuring the reliability of the pressure gauge and improving the safety of the equipment and the economic benefits of the enterprise.

[0083] The database is used to store the pressure deviation range allowed by the pressure gauge setting and the pressure detection range required for the pressure gauge to pass the detection. The data sources in the database of this embodiment are shown in Table 1 below.

[0084] Table 1 Data sources in the database

[0085]

[0086] The embodiment of the present invention improves the efficiency of pressure gauge qualification detection, improves the safety of the pressure gauge detection process, and reduces the error of manual detection by transforming the original calibration device that was entirely operated manually into an automated calibration device.

[0087] See also Figure 2As shown, the present invention proposes a device, which includes a processor, a memory and a communication bus. The memory stores a computer-readable program that can be executed by the processor. The communication bus realizes the connection and communication between the processor and the memory. When the processor executes the computer-readable program, the pressure detection and early warning system is realized.

[0088] The above contents are merely examples and explanations of the concept of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the concept of the invention or exceed the scope defined by the present invention, they shall all fall within the protection scope of the present invention.

Claims

1. A pressure detection and early warning system based on a visual sensor, characterized in that: include: The pressure gauge docking installation module is used to load each pressure gauge to be inspected in the target batch onto the target inspection device, and the target inspection device automatically pressurizes. When each pressure gauge to be inspected reaches the set pressure value, the target inspection device stops pressurizing, collects the pressure value corresponding to each pressure gauge to be inspected at each monitoring time point, and collects the number of bubbles and the volume of each bubble generated at the interface between each pressure gauge to be inspected and the target inspection device at each monitoring time point; The pressure gauge primary inspection module is used to evaluate whether the corresponding inspection of each pressure gauge to be inspected in the target batch is qualified over time, mark the unqualified pressure gauges to be inspected for early warning, mark the qualified pressure gauges to be inspected as the secondary pressure gauges to be inspected, and execute the pressure gauge secondary inspection module; The pressure compliance and pressure fluctuation of each pressure gauge to be inspected are analyzed by the corresponding pressure values ​​of each pressure gauge to be inspected at each monitoring time point, and the influencing factors of the inspection qualification are analyzed according to the number of bubbles and bubble volume at its interface position. Then, the initial inspection qualification of each pressure gauge to be inspected is obtained by analyzing the pressure compliance, pressure fluctuation and inspection qualification influencing factors of each pressure gauge to be inspected, so as to judge whether the quality of each pressure gauge to be inspected is qualified; The pressure gauge secondary detection module is used to pressurize each secondary pressure gauge to be inspected to each detection pressure value in turn through the target verification device, keep the monitoring time period unchanged, and collect the detection information of each secondary pressure gauge to be inspected after the corresponding monitoring time period at each detection pressure value; The final test qualification assessment module is used to assess whether the test corresponding to the pressure change of each secondary pressure gauge to be tested in the target batch is qualified, and the secondary pressure gauge to be tested that fails the test is marked for early warning, and the secondary pressure gauge to be tested that passes the test is marked as a qualified pressure gauge; The database is used to store the allowable pressure deviation range of the pressure gauge setting and the pressure detection range that the pressure gauge needs to withstand to meet the qualified detection requirements.

2. The pressure detection and early warning system based on a visual sensor according to claim 1, characterized in that: The specific process of evaluating whether the corresponding detection of each pressure gauge to be tested in the target batch is qualified as time changes is as follows: A1. Based on the pressure values ​​corresponding to each pressure gauge to be inspected at each monitoring time point, calculate the pressure compliance of each pressure gauge to be inspected. and pressure fluctuation ,in, Indicates the number of the pressure gauge to be inspected. ; A2. Based on the number of bubbles and the volume of each bubble generated at each monitoring time point at the interface between each pressure gauge to be tested and the target calibration device, set the detection qualification influencing factor of each pressure gauge to be tested. ; A3. Calculate the test qualification of each pressure gauge to be tested as time changes , ,in, and They represent the weights of the set pressure compliance and pressure fluctuation over time, respectively. ; A4. Compare the detection qualification degree of each pressure gauge to be tested as it changes with time with the detection qualification degree of the set reference as it changes with time. If the detection qualification degree of a pressure gauge to be tested as it changes with time is greater than or equal to the detection qualification degree of the set reference as it changes with time, it means that the detection of the pressure gauge to be tested as it changes with time is qualified; otherwise, it means that the detection of the pressure gauge to be tested as it changes with time is unqualified.

3. The pressure detection and early warning system based on visual sensor according to claim 2 is characterized in that: The specific process of calculating the pressure reaching the scale of each pressure gauge to be inspected is as follows: B1. Subtract the pressure value corresponding to each pressure gauge to be inspected at each monitoring time point from the set pressure value to obtain the pressure deviation corresponding to each pressure gauge to be inspected at each monitoring time point, and compare it with the allowable pressure deviation range of the pressure gauge setting stored in the database; B2. If the pressure deviations of a pressure gauge to be inspected at each monitoring time point are all within the permitted pressure deviation range set by the pressure gauge, the pressure reaching the calibration level of the pressure gauge to be inspected is recorded as If the pressure deviation corresponding to any monitoring time point in a pressure gauge to be inspected is not within the permitted pressure deviation range set by the pressure gauge, the pressure reaching the calibration level of the pressure gauge to be inspected is recorded as , thus obtaining the pressure reaching the calibration value of each pressure gauge to be inspected , The value of or ,in, .

4. The pressure detection and early warning system based on a visual sensor according to claim 2, characterized in that: The specific process of calculating the pressure fluctuation of each pressure gauge to be inspected is as follows: C1. Extract the maximum and minimum values ​​from the pressure values ​​corresponding to each pressure gauge to be tested at each monitoring time point, and record them as and ; C2. Calculate the pressure fluctuation of each pressure gauge to be inspected , ,in, Indicates the pressure extreme difference of the set reference.

5. The pressure detection and early warning system based on visual sensor according to claim 2 is characterized in that: The specific process of setting the influencing factors of the inspection qualification of each pressure gauge to be inspected is as follows: D1. Calculate the interface tightness of each pressure gauge to be tested at each monitoring time point based on the number of bubbles and the volume of each bubble generated at the interface between each pressure gauge to be tested and the target calibration device at each monitoring time point. ,in, Indicates the number of the monitoring time point, ; D2. Using the monitoring time point as the horizontal coordinate and the interface tightness as the vertical coordinate, construct the interface tightness deviation curve of each pressure gauge to be inspected, and locate the slope value from the curve as the interface tightness growth rate of each pressure gauge to be inspected, and mark it as ; D3. Set the influencing factors of the inspection qualification of each pressure gauge to be inspected , ,in, represents a natural constant, Indicates the interface tightness growth rate of the set reference.

6. The pressure detection and early warning system based on visual sensor according to claim 5 is characterized in that: The detection information includes a pressure value and the number of bubbles generated at the interface and the volume of each bubble.

7. The pressure detection and early warning system based on visual sensor according to claim 6 is characterized by: The specific process of evaluating whether each secondary pressure gauge to be inspected in the target batch is qualified according to the pressure change is as follows: E1. Extract the pressure value and the number of bubbles generated at the interface and the volume of each bubble from the detection information of each secondary pressure gauge to be tested after the corresponding monitoring period at each detection pressure value; E2. Calculate the pressure tolerance of each secondary pressure gauge to be inspected ,in, Indicates the number of the secondary pressure gauge to be inspected. ; E3. Based on the number of bubbles and the volume of each bubble generated at the interface of each secondary pressure gauge after the corresponding monitoring period at each detection pressure value, set the detection qualification influencing factor of each secondary pressure gauge to be inspected. ; E4. Calculate the test qualification of each secondary pressure gauge to be tested as the pressure changes , ,in, Indicates the pressure tolerance of the set reference; E5. Compare the qualified degree of detection of each secondary pressure gauge to be inspected as the pressure changes with the qualified degree of detection of the set reference as the pressure changes. If the qualified degree of detection of a secondary pressure gauge to be inspected as the pressure changes is greater than or equal to the qualified degree of detection of the set reference as the pressure changes, it means that the detection of the secondary pressure gauge to be inspected as the pressure changes is qualified; otherwise, it means that the detection of the secondary pressure gauge to be inspected as the pressure changes is unqualified.

8. The pressure detection and early warning system based on visual sensor according to claim 7 is characterized in that: The specific process of calculating the pressure tolerance corresponding to each secondary pressure gauge to be inspected is as follows: F1. Subtract the pressure value of each secondary pressure gauge to be inspected after the corresponding monitoring period at each detection pressure value from its corresponding detection pressure value to obtain the pressure change value of each secondary pressure gauge to be inspected after the corresponding monitoring period at each detection pressure value, and compare it with the pressure deviation range of the pressure gauge setting allowed stored in the database. If the pressure change value of a secondary pressure gauge to be inspected after the corresponding monitoring period at a certain detection pressure value is not within the pressure deviation range of the pressure gauge setting allowed, then the detection pressure value is recorded as an abnormal detection pressure value, and the abnormal detection pressure values ​​of each secondary pressure gauge to be inspected are counted; F2. Compare the abnormal detection pressure values ​​of each secondary pressure gauge to be inspected with the pressure detection range required to be borne by the pressure gauge inspection qualified regulations stored in the database. If an abnormal detection pressure value of a secondary pressure gauge to be inspected is within the pressure detection range required to be borne by the pressure gauge inspection qualified regulations, the corresponding pressure tolerance qualification of the secondary pressure gauge to be inspected is recorded as If the abnormal detection pressure values ​​of a secondary pressure gauge to be inspected are not within the pressure detection range required by the pressure gauge inspection qualification regulations, the corresponding pressure tolerance qualification of the secondary pressure gauge to be inspected is recorded as , thus obtaining the corresponding pressure tolerance of each secondary pressure gauge to be inspected , The value of or , .

9. The pressure detection and early warning system based on visual sensor according to claim 7, characterized in that: The specific process of setting the influencing factors of the inspection qualification of each secondary pressure gauge to be inspected is as follows: G1. The number of bubbles generated at the interface of each secondary pressure gauge to be tested after the corresponding monitoring period at each test pressure value is recorded as ,in, Indicates the number of the detected pressure value. ; G2. Extract the maximum value from the volume of bubbles generated at the interface of each secondary pressure gauge after the corresponding monitoring period at each detection pressure value, and record it as ; G3. Set the influencing factors of the inspection qualification of each secondary pressure gauge to be inspected , ,in, and Respectively represent the number of bubbles and volume of bubbles set as reference, Indicates the number of detection pressure value groups.

10. A device, characterized in that: include: Processor, memory and communication bus; The memory stores a computer-readable program executable by the processor; The communication bus realizes the connection and communication between the processor and the memory; When the processor executes the computer-readable program, the pressure detection and early warning system as described in any one of claims 1-9 is implemented.

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