Positive displacement measuring device online detection system for instrument calibration

Abstract

The utility model provides an online detection system of a volumetric measuring device for instrument calibration, and relates to the technical field of flow calibration devices. The system comprises a camera shooting module, a liquid level sensor acquisition module, a data processing module in communication connection with the camera shooting module and the liquid level sensor acquisition module, an image recognition module in communication connection with the data processing module, a man-machine interaction module, an alarm module and a data transmission module, the cloud service module is in communication connection with the data transmission module, and the client is in communication connection with the cloud service module. Through the mode, on the premise of meeting high-precision calibration of the instrument, measurement data can be recorded on line, a basis is provided for consistency and traceability of the detection process, digitization of management of the detection process is gradually achieved, and the intelligent level of the instrument and meter detection process is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of flow calibration devices, in particular to an online detection system for a volumetric measuring device for instrument calibration. Background Art

[0002] There are many types of flow measurement instruments, and their measurement principles, instrument structures, operating conditions and installation methods are different. In order to unify the flow values ​​of various instruments produced by different manufacturers and achieve a certain measurement accuracy, it is necessary to calibrate and calibrate the newly manufactured or in-use flow meters.

[0003] Common calibration methods include standard flowmeters, mass flow standard devices, and volumetric flow standard devices. Standard flowmeters typically have a wide calibration range but limited accuracy, so auxiliary calibration is often required for high-precision calibration. Mass flow standard devices are used to calibrate mass flowmeters, but are limited by the measurement range of electronic scales and are primarily used to calibrate equipment with a small range. Volumetric flow standard devices are primarily used to calibrate volumetric flowmeters. They have a large range and high calibration accuracy, but require manual acquisition and recording of receipts, which cannot objectively and impartially record the volume of the container, and calibration consistency cannot be guaranteed. Alternatively, measurements can be performed using a liquid level meter, but the measurement accuracy of the liquid level meter is low. Therefore, it is necessary to design an online detection system for volumetric measurement devices for instrument calibration to address challenges such as manual recording, calibration consistency, and measurement accuracy. Utility Model Content

[0004] The purpose of the present invention is to address the deficiencies of the prior art and to provide an online detection system for a volumetric measuring device for instrument calibration, so as to solve the problem of online detection of a volumetric calibration device.

[0005] In order to achieve the above purpose, the technical solution adopted by the present utility model is as follows:

[0006] The utility model provides an online detection system for a volumetric measuring device for instrument calibration, the system comprising: a camera shooting module, a liquid level sensor acquisition module, a data processing module, an image recognition module, a human-computer interaction module, an alarm module, a data transmission module, a cloud service module, and a client;

[0007] The data processing module is respectively connected to the camera shooting module and the liquid level sensor acquisition module; the image recognition module, the human-computer interaction module, the alarm module and the data transmission module are respectively connected to the data processing module; the cloud service module is connected to the data transmission module; and the client is connected to the cloud service module;

[0008] The camera shooting module is fastened to the scale through a fixed bracket and is used to take pictures of the scale at eye level at all times. The information of the scale picture includes the height of the water level and the display scale of the scale;

[0009] The liquid level sensor acquisition module is installed above the water pipe to collect the water level in real time;

[0010] The data processing module is used to store the pictures taken by the camera shooting module, send them to the image recognition module for recognition, and receive the returned recognition results; the data processing module is also used to receive the water level height collected by the liquid level sensor acquisition module, and compare it with the water level height result recognized by the image recognition module. When the comparison result is within the preset error range, the recognized water level height data is sent to the cloud service module through the data transmission module; when the comparison result exceeds the preset error range, the data processing module drives the alarm module to sound an alarm;

[0011] The data processing module is also used to receive configuration information sent by the cloud service module via the data transmission module. The configuration information includes shooting time, photo color, fill light brightness, and exposure gain;

[0012] The human-computer interaction module is used to exchange information with on-site inspection personnel. The human-computer interaction module is used to display the water level height data recognized by the image recognition module, the data collected by the liquid level sensor acquisition module, the data input by the on-site calibration of the inspection personnel, and the configuration information;

[0013] The cloud service module is used to receive, store, analyze and process data;

[0014] The client is used to directly call the test report template and generate a report based on the configuration information and water level data.

[0015] The beneficial effects of the utility model include:

[0016] The utility model provides an online detection system for a volumetric measuring device for instrument calibration, comprising: a camera shooting module, a liquid level sensor acquisition module, a data processing module in communication with the camera shooting module and the liquid level sensor acquisition module, an image recognition module in communication with the data processing module, a human-computer interaction module, an alarm module, and a data transmission module, a cloud service module in communication with the data transmission module, and a client in communication with the cloud service module. Through the above-mentioned method, measurement data can be recorded online while ensuring high-precision calibration of the instrument, providing a basis for consistency and traceability of the detection process, gradually digitalizing the management of the detection process, and improving the intelligence level of the instrument detection process. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. 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 paying any creative work.

[0018] Figure 1 The following is a block diagram showing the structural principle of an online detection system for a volumetric measuring device for instrument calibration provided by an embodiment of the present utility model;

[0019] Figure 2 A schematic diagram of the installation structure of a camera and a scale of an online detection system of a volumetric measuring device for instrument calibration provided by an embodiment of the present utility model is shown;

[0020] Figure 3 A schematic diagram of the structure of a data processing module of an online detection system for a volumetric measuring device for instrument calibration provided by an embodiment of the present utility model is shown;

[0021] Figure 4 A schematic diagram of the structure of a human-computer interaction module of an online detection system for a volumetric measuring device for instrument calibration provided by an embodiment of the present utility model is shown. DETAILED DESCRIPTION

[0022] 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 embodiments described 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 making creative efforts are within the scope of protection of the present invention.

[0023] Common calibration methods include standard flowmeters, mass flow standard devices, and volumetric flow standard devices. Standard flowmeters typically have a wide calibration range but limited accuracy, so auxiliary calibration is often required for high-precision calibration. Mass flow standard devices are used to calibrate mass flowmeters, but are limited by the measurement range of electronic scales and are primarily used to calibrate equipment with a small range. Volumetric flow standard devices are primarily used to calibrate volumetric flowmeters. They have a large range and high calibration accuracy, but require manual acquisition and recording of receipts, which cannot objectively and impartially record the volume of the container, and calibration consistency cannot be guaranteed. Alternatively, measurements can be performed using a liquid level meter, but the measurement accuracy of the liquid level meter is low. Therefore, it is necessary to design an online detection system for volumetric measurement devices for instrument calibration to address challenges such as manual recording, calibration consistency, and measurement accuracy.

[0024] The utility model provides an online detection system for volumetric measuring devices used for instrument calibration. Figure 1 The structure principle block diagram of the online detection system of the volumetric measuring device for instrument calibration provided by the embodiment of the present utility model is shown as follows: Figure 1 As shown, the system includes: a camera shooting module 1, a liquid level sensor acquisition module 2, a data processing module 3, an image recognition module 4, a human-computer interaction module 5, an alarm module 6, a data transmission module 7, a cloud service module 8, and a client 9.

[0025] The data processing module 3 is directly connected to the camera shooting module 1 and the liquid level sensor acquisition module 2 respectively; the image recognition module 4, the human-computer interaction module 5, the alarm module 6 and the data transmission module 7 are respectively connected to the data processing module 3; the cloud service module 8 is connected to the data transmission module 6; and the client 9 is connected to the cloud service module 8.

[0026] Figure 2 The figure shows a schematic diagram of the installation structure of the camera and the scale of the online detection system of the volumetric measuring device for instrument calibration provided by the embodiment of the present invention, as shown in FIG. Figure 2 As shown, the camera shooting module 1 adopts a lightweight camera, and the camera shooting module 1 is fastened to the scale 103 through a fixed bracket 102, and is used to always take pictures of the scale 103 at eye level. In order to prevent the camera shooting module 1 and the scale 103 from tilting due to loose fastening during long-term use, the information of the scale 103 picture taken includes both the water level height and the display scale of the scale 103.

[0027] The liquid level sensor acquisition module 2 is installed above the water pipe and is used to collect the water level height in real time to assist in calibrating the water level height data recognized by the image recognition module 4 .

[0028] The data processing module 3 is used to store the pictures taken by the camera shooting module 1, and send them to the image recognition module 4 for recognition, and receive the returned recognition results; the data processing module 3 is also used to receive the water level height collected by the liquid level sensor acquisition module 2, and compare it with the water level height result recognized by the image recognition module 4. When the comparison result is within the preset error range, the recognized water level height data is sent to the cloud service module 8 through the data transmission module 7; when the comparison result exceeds the preset error range, the data processing module 3 drives the alarm module 6 to sound an alarm. Specifically, if Figure 3As shown, the data processing module 3 includes functions such as data acquisition 301, data processing 302, data calculation 303, data storage 304, data control 305, data transmission 306, and data reception 307. Data acquisition 301 primarily collects images captured by the camera module 1 and water level data collected by the liquid level sensor acquisition module 2. After pre-processing the collected data through data processing 302, the image data is sent to the image recognition module 4 for recognition. The recognition result is returned to the data processing module 3. The water level data collected by the liquid level sensor acquisition module 2 is then compared by calling data calculation 303. If the error is within the allowed range, the recognized data is uploaded to the cloud server module 8 via the data transmission module 7. If it is not within the allowed range, the data control 304 of the data processing module 3 activates the alarm module 6 to issue an alarm. On-site inspection personnel input the actual water level data read on site through the human-computer interaction module 5 to calibrate the water level data. The newly formed calibration model data is stored in the data storage 304 of the data processing module 3 to facilitate the recognition accuracy of subsequent image data.

[0029] The data processing module 3 is also used to receive the configuration information sent by the cloud service module 8 via the data transmission module 7, and store it in the data storage 304. The configuration information includes shooting parameters such as shooting time, photo color, fill light brightness, exposure gain, etc., which facilitates clearer and more controllable shooting of water level scale information on site.

[0030] The human-computer interaction module 5 is used to exchange information with on-site inspection personnel. The human-computer interaction module 5 is used to display the water level data identified by the image recognition module 4, the data collected by the liquid level sensor acquisition module 2, the data input by the on-site calibration of the inspection personnel, and the configuration information. Specifically, Figure 4 As shown, the human-computer interaction module 5 includes a data acquisition display 501, a recognition result display 502, an actual data input 503, a fitting result display 504, a configuration parameter display 505, a configuration parameter input 506, and a device operation display 507. On-site inspection personnel can view data collected by the liquid level sensor acquisition module 2 through the acquisition data display 501, and the image recognition results of the camera capture module 1 through the recognition result display 502. Furthermore, when an alarm is triggered by the alarm module 6, the recognition results are calibrated by viewing the actual data on site and entering it into the actual data input 503. The fitting result display 504 shows the calibrated data. To facilitate on-site debugging, the configuration parameter display 505 displays the configuration parameters related to the camera capture module 1. If the image is dimly lit or underexposed, the parameter values ​​can be changed through the configuration parameter input 506. The device operation display 507 primarily displays the operating status of the measuring device, allowing for faster and more accurate identification of equipment problems.

[0031] The cloud service module 8 is used to receive, store, analyze and process data, including water level scale information, relevant configuration information and optimized model parameters.

[0032] The client 9 is used to directly call the test report template and generate a report based on the configuration information and water level height data. Specifically, the client 9 generates a standard test report by calling the water level scale information and related configuration information stored in the cloud service module 8 for submission to customers and archiving.

[0033] Through the above method, the measurement data can be recorded online under the premise of high-precision calibration of the instrument, which provides a basis for the consistency and traceability of the detection process, and gradually realizes the digitalization of the management of the detection process, thereby improving the intelligence level of the instrument detection process.

[0034] The above embodiments are only for illustrating the technical concept and features of the present invention. Their purpose is to enable ordinary technicians in this field to understand the content of the present invention and implement it. They are not intended to limit the scope of protection of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the scope of protection of the present invention.

Claims

1. An online detection system for a volumetric measuring device for instrument calibration, characterized in that: The system includes: a camera shooting module, a liquid level sensor acquisition module, a data processing module, an image recognition module, a human-computer interaction module, an alarm module, a data transmission module, a cloud service module, and a client; The data processing module is respectively connected to the camera shooting module and the liquid level sensor acquisition module, the image recognition module, the human-computer interaction module, the alarm module and the data transmission module are respectively connected to the data processing module, the cloud service module is connected to the data transmission module, and the client is connected to the cloud service module; The camera shooting module is fastened to the scale through a fixed bracket and is used to take pictures of the scale at eye level at all times. The information of the scale picture includes the height of the water level and the display scale of the scale; The liquid level sensor acquisition module is installed above the water pipe and is used to collect the water level height in real time; The data processing module is used to store the pictures taken by the camera shooting module, send them to the image recognition module for recognition, and receive the returned recognition results; the data processing module is also used to receive the water level height collected by the liquid level sensor acquisition module, and compare it with the water level height result recognized by the image recognition module. When the comparison result is within a preset error range, the recognized water level height data is sent to the cloud service module through the data transmission module; when the comparison result exceeds the preset error range, the data processing module drives the alarm module to sound an alarm; The data processing module is further configured to receive configuration information sent by the cloud service module via the data transmission module, wherein the configuration information includes shooting time, photo color, fill light brightness, and exposure gain; The human-computer interaction module is used to exchange information with on-site inspection personnel, and the human-computer interaction module is used to display the water level height data recognized by the image recognition module, the data collected by the liquid level sensor acquisition module, the data input by the inspection personnel for on-site calibration, and the configuration information; The cloud service module is used to receive and store, analyze and process data; The client is used to directly call the test report template and generate a report based on the configuration information and the water level height data.

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