Power diagram measurement equipment, power diagram measurement method and measurement system based on visual recognition technology

Abstract

The invention discloses a power diagram measuring device based on visual recognition technology, which comprises a power indicator body and an image processing device. The power indicator body further comprises a strain body and a data display board. The strain body is provided with a pressure load sensor, a control unit and a rechargeable battery. The data display board comprises a solar panel. The solar panel is used as a substrate and is provided with a frame and an LED dot matrix. The LED dot matrix is ​​used to display the pressure load value. The image processing device comprises an image collector and an image processor. The image collector is used to obtain image information of different positions of the data display board during the entire stroke of the oil pump. The image processor obtains the pressure load value and the actual displacement value of the data display board according to the image information. The power diagram measuring system comprises the above-mentioned power diagram measuring device and the upper device. The power diagram measuring method comprises the pressure load value and the actual displacement value obtained by using the above-mentioned power diagram measuring device. By using the power diagram measuring device, the data measurement accuracy is improved and the power consumption of a single device is reduced.

Description

Technical Field

[0001] The invention relates to a power diagram measuring device, a power diagram measuring method and a power diagram measuring system based on visual recognition technology. Background Art

[0002] The dynamometer system is an instrument used to test the load and stroke of the oil well pumping unit and calculate the dynamometer diagram representing the working condition of the pumping unit.

[0003] The existing dynamometer system is generally composed of an acceleration sensor, a pressure load sensor, an acquisition and amplification module, a core processing module, a wireless communication unit and an external host device. Its specific working process is as follows: after the wireless communication module receives a command from the external host device to measure the dynamometer diagram of a pumping unit cycle, it is transmitted to the core processing module. The core processing module controls the acceleration sensor and the pressure load sensor to measure a cycle (the cycle is calculated based on the motor speed of the pumping unit). The analog signals output by the two are processed by the acquisition and amplification module and then transmitted to the core processing module. During the measurement of the entire cycle, the core processing module will save a load and acceleration data group of no less than 200 points, and then obtain the displacement values ​​of the initial saved points based on the two integrations of the acceleration value, and the correct displacement value of each saved point needs to be corrected through the values ​​of the pumping unit cam curve, lever arm ratio, etc., and finally sent to the external host device through the wireless communication unit. Although the existing power diagram measurement equipment can measure the pressure load value and displacement value required for drawing the power diagram, it also has certain shortcomings: (1) The displacement value is determined by the acceleration value, and it is necessary to integrate the acceleration value twice. Therefore, in the actual operation process, due to the complexity and delay of the calculation, there may be problems such as inaccurate calculated displacement value or inaccurate one-to-one correspondence between the pressure load value and the displacement value; (2) The acceleration sensor and the pressure load sensor need to work at the same time, resulting in high power consumption of the power indicator in actual use. Based on the analysis of the above problems, the present application provides a power diagram measurement device, a power diagram measurement method and a power diagram measurement system based on visual recognition technology. Summary of the invention

[0004] The purpose of the present invention is to provide a power diagram measuring device, a power diagram measuring method and a power diagram measuring system based on visual recognition technology, so as to solve the problems of high power consumption and low data measurement precision and accuracy in the existing power indicator system.

[0005] The present invention provides a dynamometer measuring device based on visual recognition technology, comprising a dynamometer body (1) and an image processing device.

[0006] The dynamometer body (1) comprises a strain body (11) and a data display panel (12); the strain body (11) comprises a stainless steel base and an intermediate cavity; a load sensor (13) is arranged in the stainless steel base; a control unit (14) and a rechargeable battery (15) are arranged in the intermediate cavity; the control unit (14) comprises a controller and an LED light dimmer; the data display panel (12) comprises a solar cell panel (121); a frame (122) and an LED dot matrix (123) are arranged on the solar cell panel (121); the frame (122) is arranged on the periphery of the solar cell panel (121); the frame (122) is composed of a light-emitting component or a light-reflecting component; the LED dot matrix (123) is arranged on the solar cell panel (121); The front side of the solar panel (121) is used for displaying the pressure load value collected by the load sensor (13); the I / O port of the controller is respectively connected to the solar panel (121), the load sensor (13), the LED dot matrix (123) and the LED light dimmer; the controller controls the LED light dimmer to adjust the brightness and / or color of each LED light in the LED dot matrix (123) according to the output voltage of the solar panel (121); the solar panel (121) is connected to the rechargeable battery (15) through the solar controller (16), and the rechargeable battery (15) provides electric energy to the control unit (14), the load sensor (13) and the LED dot matrix (123);

[0007] The image processing device comprises an image collector (4) and an image processor (5), at least the image collector (4) is fixedly arranged on one side of the dynamometer body (1), and the visual angle of the image collector (4) can collect the maximum displacement of the movement of the dynamometer body (1), the image collector (4) is used to obtain image information of different positions of the data display board (12) within the maximum displacement in real time, and transmit the obtained image information to the image processor (5); the image processor (5) respectively obtains the pressure load value in the image information and the actual displacement value corresponding to the data display board (12), and sorts out the dynamometer data according to the pressure load value and the actual displacement value.

[0008] As a preferred embodiment of the present application, the image processor (5) comprises a fault recognition unit, an image clarity recognition unit and a communication module. The fault recognition unit communicates with a remote host device via the communication module. The image clarity recognition unit communicates with a controller on the dynamometer body (1) via the communication module. When the fault recognition unit determines that the image information collected by the image collector (4) is abnormal, the image clarity recognition unit sends an alarm message to the remote host device. When the image clarity recognition unit determines that the image collected by the image collector (4) is low in clarity, the image clarity recognition unit sends an enable signal to the controller via the communication module. The controller adjusts the brightness and / or color of each LED lamp in the LED dot matrix (123) via the LED lamp dimmer according to the enable signal.

[0009] As a preferred solution of the present application, when the frame (122) is formed by a reflective component, an obtuse angle β is formed between the inner side of the frame (122) and the solar cell panel (121);

[0010] When the frame (122) is formed by a light-emitting component, the frame (122) is connected to the rechargeable battery (15) via a wire.

[0011] As a preferred solution of the present application, there is a fixed distance between two adjacent LED lights in the LED dot matrix (123) and between each LED light and the frame, and the fixed distance is sufficient for the image collector (4) to distinguish the distance between two adjacent LED lights and between each LED light and the upper, lower, left and right frames when it is located at its installation position.

[0012] As a preferred solution of the present application, the image processor (5) comprises a pre-storage unit, a pixel counting unit and a calculation unit, wherein the pre-storage unit pre-stores the actual width D of at least one side of the data display panel (12) and a selected reference image; the pixel counting unit superimposes the current image acquired by the image collector (4) with the reference image, and calculates the relative displacement Δd of the data display panel (12) in the two images and the width d of the side of the data display panel (12) corresponding to one of the pre-stored sides in the image based on the pixel points; the calculation unit calculates the actual displacement ΔD of the data display panel (12) based on the corresponding relationship, wherein ΔD=(D×Δd) / d.

[0013] The present application also provides a method for measuring a dynamometer using the dynamometer measuring device on an oil pump, wherein the dynamometer body (1) is first fixed on the oil pump, and then an image collector (4) in the image processing device is arranged on one side of the dynamometer body (1), wherein the distance between the image collector (4) and the dynamometer body (1) must be such that its visual angle can collect the maximum displacement of the movement of the dynamometer body (1), and the dynamometer body (1) and the image processing device are turned on;

[0014] The load sensor (13) on the dynamometer body (1) measures the pressure load signal in real time, and transmits the measured pressure load signal to the control unit (14); the controller in the control unit (14) amplifies the received pressure load signal, and displays the amplified pressure load value through the LED dot matrix (123) on the data display panel (12);

[0015] The image collector (4) acquires image information of the data display panel (12) at different positions within the maximum displacement of the dynamometer body (1), and transmits the acquired image information to the image processor (5). After receiving the image information, the image processor (5) respectively acquires the pressure load value in the image information and the actual displacement value corresponding to the data display panel (12), and organizes them into dynamometer data.

[0016] As a preferred solution of the present application, the method for the image processor (5) to obtain the actual displacement value of the data display panel (12) in the image information comprises:

[0017] Presetting the actual width D of at least one side of the data display panel (12) and the selected reference image;

[0018] The current image acquired by the image collector (4) is superimposed on the reference image, and the relative displacement of the data display board (12) in the two images and the width d of the side of the data display board (12) corresponding to one of the pre-stored sides in the image are calculated based on the pixel points;

[0019] Finally, the actual displacement ΔD of the data display panel (12) is calculated according to the corresponding relationship, where ΔD=(D×Δd) / d.

[0020] As a preferred solution of the present application, during the process of the image collector (4) acquiring the image information of the data display panel (12), when the controller detects that the output voltage of the solar panel (121) is relatively large, it means that the light in the external environment is relatively strong at this time. At this time, the controller controls the LED light dimmer to increase the brightness and / or color of the LED light currently in operation; at night or when the light is poor, the frame (122) that is brightened by reflection or lit by power can make the outer peripheral contour of the data display panel (12) clearer.

[0021] As a preferred solution of the present application, the frequency at which the image collector (4) acquires the image information of the data display panel (12) at different positions within the maximum displacement is synchronized with the frequency at which the load sensor (13) acquires the pressure load signal, that is, there is a one-to-one correspondence between the pressure load value and the actual displacement value acquired by the image processor (5) in the image information.

[0022] The present application also provides a work diagram measurement system based on visual recognition technology, including the work diagram measurement device and host device described above, wherein the work diagram measurement device uploads the sorted work diagram data to the host device, and the host device receives the work diagram data and performs relevant analysis based on the work diagram data to determine the working condition of the oil well.

[0023] Since it has become a trend in the future to install image collectors such as cameras next to each oil well to monitor oil wells for oil leakage and other problems, the present application uses this trend to design a power diagram measurement device based on visual recognition technology. The advantages of the power diagram measurement device include:

[0024] (1) The load sensor 13 on the dynamometer body 1 measures the pressure load signal and displays the pressure load signal on the data display board 12 after processing by the controller. The image collector 4 obtains the image information of the data display board 12 and transmits it to the image processor 5. The image processor 5 obtains the pressure load value and the actual displacement value corresponding to the data display board 12 according to the image information, and sorts out the dynamometer data according to the pressure load value and the actual displacement value. That is, in the present application, the displacement value measurement and the pressure load value measurement are collected by different collection units, so that the data processing efficiency can be improved and the power consumption of a single collection unit can be reduced. At the same time, the displacement value is calculated by analyzing the proportional relationship between the image pixel and the actual size of the image. Compared with the existing multiple integration of the acceleration value, this calculation method has the advantages of fast calculation speed and high accuracy. Since the dynamometer body 1 only outputs the pressure load value, the actual displacement change is recorded by a series of images (photos). Therefore, not only the calculation speed is fast, but also the delay is extremely small, so that it can be ensured that the multiple groups of pressure load values ​​collected in one cycle can correspond to the corresponding actual displacement values ​​one by one.

[0025] (2) The intensity of the light currently received by the solar panel 121 is determined by utilizing the performance that the stronger the light received by the solar panel 121, the greater the power output. When the controller detects that the output voltage of the solar panel 121 increases, the brightness and / or color of each LED light in the LED dot matrix 123 is adjusted by the LED light dimmer to enhance the clarity of the LED dot matrix displayed on the solar panel 121, thereby ensuring that the pressure load value displayed on the data display board 12 in the image information collected by the image collector 4 is clearly visible, which is convenient for the image processor 5 to recognize.

[0026] (3) The data display panel 12 is provided with a frame 122 composed of a light-emitting component or a reflective component. At night, the illuminated frame 122 can make the overall structure of the data display panel 12 clearer, thereby avoiding position errors during visual recognition. Therefore, in the present application, the accuracy and clarity of the image information collected by the image collector 4 are increased by setting the frame 122 on the data display panel 12, thereby improving the accuracy of obtaining the pressure load value and the actual displacement value. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of the main structure of the power diagram measuring device provided in Example 1 of the present invention.

[0028] Figure 2 This is a schematic diagram of the structure of the dynamometer body provided in Embodiment 1 of the present invention.

[0029] Figure 3 This is a schematic diagram of the main structure of a data display panel provided in the first embodiment of the present invention.

[0030] Figure 4 The first embodiment of the present invention provides Figure 3 Schematic diagram of the structure in the AA direction.

[0031] Figure 5 This is a control structure diagram of the dynamometer body provided in the first embodiment of the present invention.

[0032] Figure 6 This is a schematic diagram of the actual displacement calculation principle of the data display panel provided in the first embodiment of the present invention.

[0033] Figure 7 This is a structural diagram of the connection between the image processor, the host device and the controller provided in the third embodiment of the present invention.

[0034] Figure 8 This is a structural diagram between the image processing device and the host device provided in Embodiment 5 of the present invention.

[0035] Reference numerals

[0036] The dynamometer body 1, the strain body 11, the data display board 12, the solar panel 121, the frame 122, the LED dot matrix 123, the conductor belt 124, the load sensor 13, the control unit 14, the rechargeable battery 15, the solar controller 16, the donkey head 2, the light rod 3, the image collector 4, and the image processor 5. DETAILED DESCRIPTION

[0037] Example 1

[0038] This embodiment provides a power diagram measurement device based on visual recognition technology. Figure 1The dynamometer measurement device includes a dynamometer and an image processing device.

[0039] In this embodiment, the dynamometer body 1 includes a strain body 11 and a data display panel 12. Figure 2 The strain body 11 includes a stainless steel base and an intermediate cavity. A load sensor 13 is arranged in the stainless steel base. A control unit 14 and a rechargeable battery 15 are arranged in the intermediate cavity. The control unit 14 includes a controller and an LED light dimmer.

[0040] The data display panel 12 includes a solar panel 121, see Figure 3-4 , the solar panel 121 is provided with a frame 122 and an LED dot matrix 123. In this embodiment, the frame 122 is arranged on the periphery of the solar panel 121, and the frame 122 is composed of a reflective component. In this embodiment, the reflective component is preferably a reflective sheet. The main function of the frame 122 is to clearly display the contour structure of the data display board 12 at night. In this embodiment, the reflective sheet located on the inner side of the frame 122 preferably forms an obtuse angle β with the solar panel 121, and β is preferably 135°. At night, when one or more lamp beads in the LED dot matrix 123 are lit, the reflective sheet arranged at this angle can use the light of the lit lamp beads in the LED dot matrix 123 as a light source to make the frame 122 reflect and brighten, thereby making the outer contour of the data display board 12 appear. In this embodiment, the reflective component can also be made of fluorescent material. The reflective component of the fluorescent material can use visible light as energy and can also use the light of the LED dot matrix 123 as energy; the LED dot matrix 12 3 is arranged on the front of the solar panel 121, and the LED dot matrix 123 is used to display the pressure load value collected by the load sensor 13. In this embodiment, in order to save the number of LED lights used and reduce power consumption, it is preferred that the LED dot matrix 123 is arranged in eight bits on the front of the solar panel 121, and the LED dot matrix 123 displays the data collected by the load sensor 13 in binary form. Of course, if the size of the data display board 12 allows, the LED dot matrix can also be arranged in more than eight bits, so that the display accuracy of the pressure load value can be higher. At the same time, the data display board 12 can also display the data collected by the load sensor 13 in decimal form. In this embodiment, the LED dot matrix 123 is composed of a plurality of independent LED lamp beads, and the plurality of LED lamp beads are attached to the solar panel 121. After the plurality of LED lamp beads are connected in parallel, they are connected to the controller through the conductor belt 124. Of course, the LED dot matrix 123 can also be formed by using an LED light belt.

[0041] In this embodiment, the color of the LED light is preferably at least one of red and yellow, which have better penetrability. The light of this color can still be clearly identified even in low visibility environments such as foggy or rainy days.

[0042] The I / O ports of the controller are respectively connected to the solar panel 121, the load sensor 13, the LED dot matrix 123 and the LED light dimmer. In this embodiment, the performance of the solar panel 121 that the stronger the light received, the greater the power output is to be used to judge the intensity of the light currently received by the solar panel 121. When the controller detects that the output voltage of the solar panel 121 increases, it means that the light received by the solar panel 121 is strong at this time. The controller controls the LED light dimmer to adjust the brightness and color of each LED light in the LED dot matrix 123, so that the brightness and color of the LED light can be clearly identified under the current strong light. The solar panel 121 is connected to the rechargeable battery 15 through the solar controller 16 and the rechargeable battery 15 provides power to the control unit 14, the load sensor 13 and the LED dot matrix 123. See Figure 5 .

[0043] The image processing device includes an image collector 4 and an image processor 5. The image processor 5 is electrically connected to the image collector 4 and is used to process image information collected by the image collector 4. At least the image collector 4 is fixed on one side of the dynamometer body 1, and the viewing angle of the image collector 4 can collect the maximum displacement of the dynamometer body 1. In this embodiment, the viewing angle θ of the image collector 4 and the maximum displacement H satisfy the relationship: H≤2*L*tanθ, where L is the shortest distance between the image collector 4 and the light rod 3, that is, in this embodiment, when the dynamometer body 1 moves to any position of the maximum displacement, the image collector 4 still has sufficient resolution to identify adjacent LED lights on the data display board 12 and the distance between each LED light and the frame.

[0044] The image collector 4 is used to obtain image information of the data display board 12 at different positions within the maximum displacement in real time (only the image information of one cycle of the dynamometer body 1 movement can be obtained as needed), and the obtained image information is transmitted to the image processor 5. In this embodiment, the image information includes the pressure load value displayed on the data display board 12. In order to ensure that the pressure load value is clearly displayed in the collected image information, in this embodiment, it is preferred that the LED lamp beads are at a fixed distance from the frame 122 of the data display board 12. At the same time, there is also a fixed distance between two adjacent LED lamp beads. In this embodiment, the fixed distance must be sufficient to enable the image collector 4 to distinguish the distance between two adjacent LED lamps and each LED lamp and the upper, lower, left and right frames when it is located at its installation position. Since the distance between two adjacent LED lamps and each LED lamp and the frame is The fixed distance is affected by factors such as the size of the display panel 12, the actual installation position of the image collector 4, and the pixel height of the image collector 4. Therefore, in this embodiment, the fixed distance is not specifically limited and is set according to actual conditions during actual use. In this embodiment, the image collector 4 is preferably an existing common digital camera. The image processor 5 obtains the pressure load value in the image information and the actual displacement value corresponding to the data display panel 12 respectively and organizes them into work image data. In this embodiment, the image processor 5 can directly obtain the pressure load value in binary form in the image information for use. At the same time, the image processor 5 superimposes the currently acquired image with the reference image. The superposition of the two images can quickly obtain the displacement difference between the current image and the reference image, and then the actual displacement of the data display panel 12 can be calculated according to the corresponding ratio.

[0045] In this embodiment, the image processor 5 comprises a pre-storage unit, a pixel counting unit and a calculation unit, wherein the pre-storage unit pre-stores the actual width D of at least one side of the data display panel 12 and a selected reference image; the pixel counting unit superimposes the current image acquired by the image collector 4 with the reference image, and calculates the relative displacement Δd of the data display panel 12 in the two images and the width d of the side of the data display panel 12 corresponding to one of the pre-stored sides (the side is preferably a side that is easy to calculate or can clearly acquire pixel points) in the image according to the pixel points; the calculation unit calculates the actual displacement ΔD of the data display panel (12) according to the corresponding relationship, wherein ΔD=(D×Δd) / d.

[0046] In this embodiment, the reference image is preferably an image in which the data display panel 12 is located at an initial position of maximum displacement.

[0047] See also Figure 6 , which is a schematic diagram of the actual displacement calculation principle of the data display panel provided in this embodiment.

[0048] In this embodiment, the operating stroke of the oil pump is generally within the range of 2.5-10m. Therefore, the dynamometer body will not be distorted in the image information obtained by the image collector 4 within this range. Therefore, using pixel points to determine the displacement and width of the data display board in the image is the fastest way.

[0049] The dynamometer measuring device in this embodiment collects the displacement value and the pressure load value through different collection units, so that the data processing efficiency can be improved and the power consumption of a single collection unit can be reduced. At the same time, the calculation of the actual displacement value of the data display board 12 is obtained by analyzing the corresponding relationship between the image pixels and the actual size of the image. Compared with the existing multiple integrations of the acceleration values, this calculation method has the advantages of fast calculation speed and high accuracy. Due to the fast calculation speed, the delay is extremely small, so it can be ensured that the collected multiple groups of pressure load values ​​and the corresponding actual displacement values ​​meet a one-to-one correspondence. In this embodiment, the dynamometer body 1 is also different from the existing dynamometer body 1. The power meter is only used for collecting and displaying pressure load values. During the display process, in order to cooperate well with the image collector 4, a frame 122 composed of a reflective component is provided on the data display board 12. At night, the frame 122 is brightened by reflecting the light of the lit LED light. The brightened frame 122 can make the overall structure of the data display board 12 clearer. Therefore, by utilizing the relationship between the intensity of light received by the solar panel 121 and the output voltage and by setting the frame 122 on the data display board 12, the accuracy and clarity of the image information collected by the image collector 4 are increased, thereby improving the accuracy of obtaining the pressure load value and the actual displacement value.

[0050] Embodiment 2:

[0051] Compared with Example 1, the difference of this embodiment is that the frame 122 is composed of a light-emitting component, and the frame 122 is connected to the rechargeable battery 15 through a wire, that is, the frame 122 can emit light or shine after being powered on. In this embodiment, the light-emitting component is preferably a lamp tube. Of course, it can also be other components that emit light after being powered on, and this embodiment does not make specific limitations.

[0052] Embodiment 3:

[0053] Compared with Example 1, the difference of this embodiment is that the image processor 5 includes a fault recognition unit, an image clarity recognition unit and a communication module. In this embodiment, the communication module preferably includes a long-distance communication module and a short-distance communication module, wherein the long-distance communication module may be at least one of a LoRa module, a GPRS module or a 4G module, and the present embodiment is preferably a low-power LoRa module, and the short-distance communication module is a Bluetooth module or a Zigbee module, and the present embodiment is preferably a Bluetooth module; the fault recognition unit communicates with the remote host device through the LoRa module, and the image clarity recognition unit communicates with the controller on the dynamometer body 1 through the Bluetooth module. When the fault recognition unit determines that the image information collected by the image collector 4 is abnormal, it sends an alarm message to the remote host device. In this embodiment The abnormal information includes the abnormality of the image collector 4 and the abnormality of the dynamometer body 1. The abnormality of the image collector 4 includes damage or displacement of the image collector 4, and the abnormality of the dynamometer body 1 includes damage or lack of power of the data display board 12, resulting in the inability to display the pressure load value normally; when the image clarity recognition unit determines that the image clarity collected by the image collector 4 is low, the image clarity recognition unit sends an enable signal to the controller through the communication module, and the controller adjusts the brightness and / or color of each LED lamp in the LED dot matrix 123 through the LED lamp dimmer according to the enable signal. In this embodiment, the main factors for the low image clarity include being affected by external environments such as foggy or rainy days. By adjusting the brightness and color of the LED lamp, it can be ensured that the pressure load value in the graphic information collected by the image collector 4 on foggy or rainy days can still be clearly identified.

[0054] Example 4

[0055] This embodiment provides a power diagram measurement method. The power diagram measurement device used in the power diagram measurement method is the power diagram measurement device mentioned in Embodiment 1 or Embodiment 2. The power diagram measurement method includes:

[0056] First, fix the dynamometer body 1 on the polished rod 3 of the oil pump, and then set the image processing device on one side of the dynamometer body 1. In this embodiment, the image processing device includes an image collector 4 and an image processor 5. Preferably, the image collector 4 is a common digital camera, and the image processor 5 is a processing device set at one end of the image collector 4. In this embodiment, the image collector 4 is preferably opposite to the display surface of the data display board 12 on the dynamometer body 1 (to facilitate the collection of the peripheral contour of the data display board 12 and the displayed pressure load value). The distance between the image collector 4 and the dynamometer body 1 must meet the requirement that its visual angle can collect the maximum displacement H of the movement of the dynamometer body 1. At the same time, the collected image can be The distance between each LED lamp bead in the LED dot matrix on the data display board and the frame and the distance between two adjacent LED lamp beads are clearly displayed. In this embodiment, the maximum displacement satisfies the equation: H≤2*L*tanθ, where L is the shortest distance between the image collector 4 and the light rod 3, and the angle θ is the visual angle of the maximum displacement of the dynamometer body 1 that can be captured by the camera. That is, in this embodiment, when the dynamometer body 1 moves to any position of the maximum displacement, the image collector 4 still has sufficient resolution to identify the adjacent LED lights on the data display board 12 and the distance between each LED light and the frame; after the dynamometer body 1 and the image processing device are installed, the dynamometer body 1 and the image processing device are turned on.

[0057] The load sensor 13 on the dynamometer body 1 measures the pressure load signal in real time, and transmits the measured pressure load signal to the control unit 14. The controller in the control unit 14 amplifies the received pressure load signal, and finally displays the amplified pressure load value directly in decimal form or after conversion to binary through the LED dot matrix 123 on the data display panel 12. In order to save the number of LED lights used and reduce power consumption, the LED dot matrix 123 is preferably arranged in eight digits on the front of the solar cell panel 121, and the pressure load value is preferably displayed in binary form.

[0058] The image collector 4 obtains image information of different positions of the data display board 12 within the maximum displacement during one cycle of the movement of the polished rod 3, and transmits the obtained image information to the image processor 5. After receiving the image information, the image processor 5 respectively obtains the pressure load value in the image information and the actual displacement value corresponding to the data display board 12 and organizes them into work image data. Specifically, the image processor 5 directly obtains the pressure load value in binary form from the image information for use. At the same time, the image processor 5 superimposes the currently obtained image with the reference image. The superposition of the two images can quickly obtain the displacement difference between the current image and the reference image, and then the actual displacement of the data display board 12 can be calculated according to the corresponding ratio. Specifically:

[0059] Preset the actual width D of at least one side of the data display panel 12 and the selected reference image;

[0060] The current image acquired by the image collector 4 is superimposed with the reference image, and the relative displacement Δd of the data display panel 12 in the two images and the width d of the side of the data display panel 12 corresponding to one of the pre-stored sides (the side is preferably a side that is easy to calculate or can clearly obtain the pixel points) in the image are calculated according to the pixel points;

[0061] Finally, the actual displacement ΔD of the data display panel 12 is calculated based on the corresponding relationship, where ΔD=(D×Δd) / d;

[0062] In this embodiment, the reference image is preferably an image of the data display panel 12 at the initial position of the maximum displacement of the movement.

[0063] In this embodiment, the operating stroke of the oil pump is generally within the range of 2.5-10m. Therefore, the dynamometer body will not be distorted in the image information obtained by the image collector 4 within this range. Therefore, using pixel points to determine the displacement and width of the data display board in the image is the fastest way.

[0064] In this embodiment, the frequency at which the image acquisition device 4 acquires image information of the data display panel 12 at different positions within the maximum displacement is preferably synchronized with the frequency at which the load sensor 13 acquires the pressure load signal. In this way, it can be ensured that there is a one-to-one correspondence between the pressure load value and the actual displacement value acquired by the image processor 5 in the image information, thereby ensuring that the acquired power diagram data is more accurate.

[0065] In this embodiment, during the process of the image collector 4 acquiring the image information of the data display board 12, especially during the day, when the controller detects that the output voltage of the solar panel 121 increases, it means that the solar panel 121 is exposed to strong light at this time, then the controller controls the LED light dimmer to adjust the brightness and color of each LED light in the LED dot matrix 123, so that the brightness of the LED light can be higher relative to the light intensity, so that the pressure load value can be clearly displayed in the image information acquired by the image collector 4. At night or when the light is poor, the frame 122 of the data display board 12 lights up when it is reflected or powered on. The lit frame 122 can make the outer peripheral contour of the data display board 12 clearer, so that the image collector 4 can collect the contour of the data display board 12 for subsequent calculation of the actual displacement of the data display board 12.

[0066] In summary, in the power diagram measurement method in this embodiment, the measurement of the displacement value and the measurement of the pressure load value are collected through different acquisition units. In this way, the data processing efficiency can be improved and the power consumption of a single acquisition unit can be reduced. At the same time, the calculation of the actual displacement value of the data display board 12 is obtained by analyzing the proportional relationship between the image pixels and the actual size of the image. Compared with the existing multiple integrations of the acceleration values, this calculation method has the advantages of simple calculation, fast speed and high accuracy. Due to the fast calculation speed, there is no delay phenomenon. In this way, it can be ensured that the collected multiple groups of pressure load values ​​can correspond to the corresponding actual displacement values ​​one by one. Therefore, the use of the power diagram measurement method in this embodiment can not only improve the data acquisition efficiency and data acquisition accuracy, but also reduce the power consumption of a single acquisition device.

[0067] Example 5

[0068] This embodiment provides a work diagram measurement system based on visual recognition technology, which includes the work diagram measurement device and the host device mentioned in embodiment 1, embodiment 2 or embodiment 3. The work diagram measurement device uploads the organized work diagram data to the host device in an agreed format, and the host device receives the work diagram data and performs relevant analysis based on the work diagram data to judge the working condition of the oil well. Figure 8 , is a structural diagram between the image processor 5 and the host device provided in this embodiment.

[0069] The above is only an embodiment of the present invention, and the common knowledge such as the known specific structure and characteristics in the scheme is not described in detail here. It should be pointed out that for those skilled in the art, several improvements can be made without departing from the present invention, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection required by this application shall be based on the content of the claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A power diagram measuring device based on visual recognition technology, characterized in that: It comprises a dynamometer body (1) and an image processing device, The dynamometer body (1) comprises a strain body (11) and a data display panel (12); the strain body (11) comprises a load sensor (13) and an intermediate cavity; a control unit (14) and a rechargeable battery (15) are arranged in the intermediate cavity; the control unit (14) comprises a controller and an LED light dimmer; the data display panel (12) comprises a solar cell panel (121); a frame (122) and an LED dot matrix (123) are arranged on the solar cell panel (121); the frame (122) is arranged on the periphery of the solar cell panel (121); the frame (122) is composed of a light emitting component or a light reflecting component; the LED dot matrix (123) is arranged on the solar cell panel (121); ), the LED dot matrix (123) is used to display the pressure load value collected by the load sensor (13); the I / O port of the controller is respectively connected to the solar panel (121), the load sensor (13), the LED dot matrix (123) and the LED light dimmer; the controller controls the LED light dimmer to adjust the brightness and / or color of each LED light in the LED dot matrix (123) according to the output voltage of the solar panel (121); the solar panel (121) is connected to the rechargeable battery (15) through the solar controller (16), and the rechargeable battery (15) provides power to the control unit (14), the load sensor (13) and the LED dot matrix (123); The image processing device comprises an image collector (4) and an image processor (5), at least the image collector (4) is fixedly arranged on one side of the dynamometer body (1), and the visual angle of the image collector (4) can collect the maximum displacement of the movement of the dynamometer body (1), the image collector (4) is used to obtain image information of different positions of the data display board (12) within the maximum displacement in real time, and transmit the obtained image information to the image processor (5); the image processor (5) respectively obtains the pressure load value in the image information and the actual displacement value corresponding to the data display board (12), and sorts out the dynamometer data according to the pressure load value and the actual displacement value.

2. The power diagram measuring device according to claim 1, characterized in that: The image processor (5) comprises a fault recognition unit, an image clarity recognition unit and a communication module. The fault recognition unit communicates with a remote host device via the communication module. The image clarity recognition unit communicates with a controller on the dynamometer body (1) via the communication module. When the fault recognition unit determines that the image information collected by the image collector (4) is abnormal, it sends an alarm message to the remote host device. When the image clarity recognition unit determines that the image clarity collected by the image collector (4) is low, it sends an enable signal to the controller via the communication module. The controller adjusts the brightness and / or color of each LED lamp in the LED dot matrix (123) via the LED lamp dimmer according to the enable signal.

3. The power diagram measuring device according to claim 1, characterized in that: The image processor (5) comprises a pre-storage unit, a pixel counting unit and a calculation unit, wherein the pre-storage unit pre-stores an actual width D of at least one side of the data display panel (12) and a selected reference image; the pixel counting unit superimposes a current image acquired by the image collector (4) with the reference image, and calculates the relative displacement Δd of the data display panel (12) in the two images and the width d of the side of the data display panel (12) corresponding to one of the pre-stored sides in the image based on the pixel points; the calculation unit calculates the actual displacement ΔD of the data display panel (12) based on the corresponding relationship, wherein ΔD=(D×Δd) / d.

4. The power diagram measuring device according to claim 1, characterized in that: There is a fixed distance between two adjacent LED lights in the LED dot matrix (123) and between each LED light and the frame, and the fixed distance is sufficient for the image collector (4) to distinguish the distance between two adjacent LED lights and between each LED light and the upper, lower, left and right frames when it is located at its installation position.

5. The power diagram measuring device according to claim 1, characterized in that: When the frame (122) is formed by a reflective component, an obtuse angle β is formed between the inner side of the frame (122) and the solar cell panel (121); When the frame (122) is formed by a light-emitting component, the frame (122) is connected to the rechargeable battery (15) via a wire.

6. A method for measuring a work diagram using the work diagram measuring device according to any one of claims 1 to 5 on an oil pump, characterized in that: The dynamometer body (1) is first fixed on the oil pump, and then the image collector (4) in the image processing device is arranged on one side of the dynamometer body (1), the distance between the image collector (4) and the dynamometer body (1) must satisfy the maximum displacement of the dynamometer body (1) that can be collected by its visual angle, and the dynamometer body (1) and the image processing device are turned on; The load sensor (13) on the dynamometer body (1) measures the pressure load signal in real time, and transmits the measured pressure load signal to the control unit (14); the controller in the control unit (14) amplifies the received pressure load signal, and displays the amplified pressure load value through the LED dot matrix (123) on the data display panel (12); The image collector (4) acquires image information of the data display panel (12) at different positions within the maximum displacement of the dynamometer body (1), and transmits the acquired image information to the image processor (5). After receiving the image information, the image processor (5) respectively acquires the pressure load value in the image information and the actual displacement value corresponding to the data display panel (12), and organizes them into dynamometer data.

7. The power diagram measurement method according to claim 6, characterized in that: The method for the image processor (5) to obtain the actual displacement value of the data display panel (12) in the image information comprises: Presetting the actual width D of at least one side of the data display panel (12) and the selected reference image; The current image acquired by the image collector (4) is superimposed on the reference image, and the relative displacement Δd of the data display plate (12) in the two images and the width d of the side of the data display plate (12) corresponding to one of the pre-stored sides in the image are calculated based on the pixel points; Finally, the actual displacement ΔD of the data display panel (12) is calculated according to the corresponding relationship, where ΔD=(D×Δd) / d.

8. The power diagram measurement method according to claim 6, characterized in that: During the process of the image collector (4) acquiring the image information of the data display panel (12), when the controller detects that the output voltage of the solar panel (121) is relatively large, it means that the light in the external environment is relatively strong at this time. At this time, the controller controls the LED light dimmer to increase the brightness and / or color of the LED light currently in operation; at night or when the light is poor, the frame (122) that is brightened by reflection or lit by power can make the outer peripheral contour of the data display panel (12) clearer.

9. The power diagram measurement method according to any one of claims 6 to 8, characterized in that: The frequency at which the image collector (4) acquires image information of the data display panel (12) at different positions within the maximum displacement is synchronized with the frequency at which the load sensor (13) acquires pressure load signals, that is, there is a one-to-one correspondence between the pressure load value and the actual displacement value acquired by the image processor (5) in the image information.

10. A power diagram measurement system based on visual recognition technology, characterized in that: It comprises the work diagram measuring device and the host device as described in any one of claims 1-5, wherein the work diagram measuring device uploads the sorted work diagram data to the host device, and the host device receives the work diagram data and performs relevant analysis based on the work diagram data to judge the working condition of the oil well.

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