Multi-modal data fusion water gauge measurement system
By using a multimodal data fusion water gauge measurement system that combines pressure, distance, and image sensors, the accuracy and real-time issues of traditional hydrological measurement methods have been solved, enabling high-precision water level measurement in complex environments.
Patent Information
- Application Number
- CN202520847315.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-29
- Publication Date
- 2025-12-23
- Estimated Expiration
- 2035-04-29
AI Technical Summary
Traditional hydrological measurement methods are greatly affected by human factors and the environment, making it impossible to achieve real-time continuous monitoring. Single sensors have low measurement accuracy in complex environments, lack redundancy and complementarity, and are easily affected by malfunctions or interference.
A multimodal data fusion water level gauge system is adopted, which combines pressure sensors, distance sensors, and image sensors to acquire water level height information from different angles. The sensor data is processed using algorithms such as weighted averaging to improve measurement accuracy.
It achieves accuracy and stability in water level measurement under complex environments, reduces measurement errors, and improves the precision and reliability of water level measurement.
Smart Images
Figure CN223710762U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to water level measurement technical field, concretely relates to a multimodal data fusion water gauge measurement system. BACKGROUND
[0002] In the field of hydrological measurement, accurately and timely obtaining water level and other related data is crucial for water resource management, water conservancy construction, flood control and disaster reduction, and ecological environment monitoring. Traditional hydrological measurement methods have many shortcomings. For example, manual observation of water gauge is greatly affected by subjective factors of observers, weather conditions, light, etc., and cannot realize real-time continuous monitoring, so the accuracy and timeliness of data cannot be guaranteed.
[0003] Some automatic measurement devices based on single sensors, such as ultrasonic water level meter and radar water level meter, can improve the automation degree of measurement to some extent, but in complex environments, such as high sand content in water, floating objects, large water surface fluctuation or existence of interference sources, the measurement accuracy may be affected. Moreover, single sensor measurement method lacks redundancy and complementarity, and it is difficult to accurately obtain water level information once the sensor fails or is disturbed. SUMMARY
[0004] In order to overcome the above-mentioned shortcomings in the prior art, the utility model provides a multimodal data fusion water gauge measurement system with high water level measurement accuracy.
[0005] The technical scheme of the utility model is as follows:
[0006] A multimodal data fusion water gauge measurement system comprises a plurality of data acquisition terminals and a background server, characterized in that each data acquisition terminal comprises a indicating rod, a data acquisition module and a control unit.
[0007] The indicating rod is hollow, and a plurality of through holes communicating with the outside are arranged on the outer wall. A floating block sliding along the axial direction is arranged in the hollow part of the indicating rod. An installation seat is arranged on the indicating rod. The data acquisition module comprises a pressure sensor, a distance measuring sensor and an image sensor. The pressure sensor is arranged at the 0 scale line of the indicating rod. The distance measuring sensor is arranged at the top of the indicating rod and cooperates with the floating block. The image sensor is used to acquire the reading of the water surface at the indicating rod.
[0008] The pressure sensor, distance measuring sensor and image sensor are electrically connected to the control unit. The control unit is connected to the background server by wired or wireless mode.
[0009] In any of the above-mentioned schemes, the upper surface of the floating block is preferably provided with a laser reflection coating.
[0010] Preferably, in any of the above solutions, the inner wall of the indicating rod is provided with a plurality of reinforcing ribs.
[0011] Preferably, in any of the above solutions, each of the reinforcing ribs is connected to the inner wall of the indicating rod by a screw.
[0012] Preferably, in any of the above solutions, the side of the float is provided with a guide groove matched with each of the reinforcing ribs, so that the float slides along each of the reinforcing ribs.
[0013] Preferably, in any of the above solutions, the part where the float and the guide groove are in contact is provided with a Teflon coating.
[0014] Preferably, in any of the above solutions, the mounting base comprises a first base provided at the bottom of the indicating rod or a second base provided at the side of the indicating rod, the first base extends downward, and the second base extends to the side.
[0015] Preferably, in any of the above solutions, the surface of the side where the scale of the indicating rod is displayed is provided with a scraper, the scraper is in sliding connection with the body of the indicating rod, and
[0016] the scraper is driven to slide along the indicating rod by a driving member.
[0017] Preferably, in any of the above solutions, a spiral water suction pipe is further included, which sucks water from the water body and delivers the water to the scraper.
[0018] Preferably, in any of the above solutions, the control unit is wirelessly connected to the background server by any one of Bluetooth, WiFi, ZigBee, IrDA, TransferJet, GPRS, and CDMA.
[0019] The multi-modal data fusion water gauge measurement system of the utility model, through pressure sensor, ranging sensor and image sensor collect data together, obtain water surface height information from different angles, compared with single sensor measurement, can more accurately reflect actual water level situation, reduce error, improve measurement precision. Therefore, have the beneficial effect that water level measurement accuracy is high. BRIEF DESCRIPTION OF DRAWINGS
[0020] Figure 1 It is a schematic view of any data acquisition terminal of the multi-modal data fusion water gauge measurement system of the utility model.
[0021] Figure 2 It is a cross-sectional schematic view of a preferred embodiment of the indicating rod of any data acquisition terminal of the multi-modal data fusion water gauge measurement system of the utility model.
[0022] Figure 3The schematic view of the scraper and the indicating rod matched with each other of any data acquisition terminal of the multi-modal data fusion water gauge measurement system of the utility model.
[0023] Figure 4 The circuit connection schematic view of the multi-modal data fusion water gauge measurement system of the utility model.
[0024] Marking of the figure:
[0025] 101-image sensor; 102-indicating rod; 103-first base; 104-through hole; 105-second base; 106-range sensor; 107-stiffener; 108-float; 109-pressure sensor; 110-scraper; 111-spiral water suction pipe; 112-driving motor. DETAILED DESCRIPTION
[0026] The technical scheme of the utility model will be described clearly and completely below in combination with the drawings, obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the protection scope of the utility model.
[0027] In the description of the utility model, if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like appear, the indicated orientation or position relationship is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, therefore, it cannot be understood as a limitation on the utility model. In addition, if the terms "first", "second", "third" appear, they are only for the purpose of description, and cannot be understood as indicating or implying relative importance.
[0028] Embodiment 1:
[0029] The multi-modal data fusion water gauge measurement system is suitable for hydrological measurement, ship body draft height measurement, culvert accumulated water height measurement and the like scenes. Specifically, the multi-modal data fusion water gauge measurement system comprises a plurality of data acquisition terminals and a background server, each data acquisition terminal is used for collecting water level height information of a to-be-measured point. The background server is used for collecting data collected by each data acquisition terminal.
[0030] As Figure 1 , 2As shown in Figure 4, each data acquisition terminal includes a display rod 102, a data acquisition module, and a control unit. The display rod 102 provides basic support for each functional component, and the scale markings on the display rod 102 can directly display water level information. The display rod 102 is hollow, with several through holes 104 on its outer wall, allowing the hollow part of the display rod 102 to communicate with the outside. During use, water can enter the interior of the display rod 102 through the through holes 104, and the water level inside the display rod 102 is consistent with the water level to be measured. The display rod 102 can be made of aluminum alloy square tubing or plastic square tubing, etc. A mounting base is provided at the indicator rod 102 for mounting the indicator rod 102 at the point to be measured. The mounting base can be configured in two ways depending on the application. One option is that the mounting base includes a first base 103, which is located at the bottom of the indicator rod 102. This is suitable for measuring the water level of rivers, lakes, and reservoirs. In practical use, the indicator rod 102 is fixed to a foundation platform on the riverbed or lake bottom via the first base 103. Another option is that the mounting base includes a second base 105, which has at least two supports extending laterally. The second base 105 can be used to fix the indicator rod 102 to a culvert or ship hull. When used for measuring the draft of a ship, a strong magnet can also be installed at the end of the second base 105.
[0031] like Figure 2 As shown, the data acquisition module includes a pressure sensor 109, a distance sensor 106, and an image sensor 101. In use, the pressure sensor 109 is positioned at the 0 mark of the indicator rod 102. When the water level gauge is submerged, the sensor experiences water pressure. By measuring the pressure value and combining it with the known water density and gravitational acceleration, the height of the water surface from the sensor can be calculated, thus obtaining the water height. The distance sensor 106 is positioned at the top of the indicator rod 102 and works in conjunction with a float 108. When the water level rises or falls, the water level in the hollow part of the indicator rod 102 changes, and the float 108 represents the water height. The distance sensor 106 transmits a signal that is reflected back by the float 108. Based on the time difference between signal transmission and reception, the sensor calculates the distance from the sensor to the float 108. Given the total length of the indicator rod 102, the distance from the water surface to the top of the indicator rod 102 can be obtained through subtraction, thus yielding the water height. The ranging sensor 106 can be an ultrasonic ranging sensor or a laser ranging sensor. The image sensor 101 is used to collect the reading of the water surface at the indicator rod. It obtains the water height by taking an image of the intersection of the scale on the indicator rod 102 and the water surface, and using image recognition technologies such as edge detection algorithms, threshold segmentation methods, or template matching methods to analyze the position of the scale where the water surface is located in the image.
[0032] like Figure 4As shown, the control unit is provided with several I / O interfaces, and the pressure sensor 109, the distance measuring sensor 106 and the image sensor 101 are respectively electrically connected with the corresponding I / O interfaces of the control unit. In use, the control unit collects the signals of each sensor in real time, and transmits the signals of each sensor to the background server through wired or wireless mode after processing. The power supply of each data acquisition terminal can adopt the solar power generation mode. When the control unit is connected with the background server through wireless mode, any one of the communication modes of Bluetooth, WiFi, ZigBee, IrDA, TransferJet, GPRS and CDMA can be adopted, and the chip made based on any one of the above communication principles has the advantages of high reliability and low cost.
[0033] It can be understood that each of the three sensors has advantages and disadvantages. For example, the pressure sensor 109 can be affected by the change of water density, the distance measuring sensor 106 can be disturbed by the movement state of the float 108, and the image sensor 101 can be affected by environmental factors such as light. In specific application, the data of the three sensors are comprehensively analyzed and processed by a specific algorithm (such as weighted average, Kalman filtering, etc.). In specific use, the measurement error of various types of sensors in different environments and working conditions is analyzed through multiple calibrations and tests, and the weight is allocated according to the error size. The weight of the sensor with small error is high, and the weight of the sensor with large error is low. Specifically, in a complex light environment, the weight of the image sensor 101 is appropriately reduced.
[0034] At the same time, the weight is updated regularly. With the increase of the use time of the device and the change of the environment, the performance of the sensor may change, so it is necessary to regularly reevaluate the performance of the sensor and update the weight to ensure the accuracy of the weighted average result. In order to obtain more accurate and reliable water height data. In this way, the advantages of each sensor can be fully utilized, the shortcomings of a single sensor can be made up, and the measurement accuracy and stability can be improved.
[0035] It can be understood that the function of the control unit is realized by the control unit hardware itself and the program installed in the control unit. It should be noted that the program is written according to the above description of the working principle of the multi-modal data fusion water gauge measurement system. Among them, the specific assembly language used in the program writing, the functions called, and the data debugging method are all prior art, and the program installed in the control unit of the present application is not the content protected by the present scheme.
[0036] Embodiment 2:
[0037] On the basis of embodiment 1, as Figure 2In the shown embodiment, in order to improve the sensitivity of the distance measuring sensor 106, the upper surface of the float 108 is provided with a laser reflection coating. The laser reflection coating can be a metal film, a high reflectivity coating or a reflective polymer film, etc.
[0038] Embodiment 3:
[0039] Based on embodiment 1 or 2, as Figure 2 In the shown embodiment, in order to improve the mechanical strength of the indicating rod 102, the inner wall of the indicating rod 102 is provided with a plurality of reinforcing ribs 107.
[0040] In order to facilitate the installation of each reinforcing rib 107, each reinforcing rib 107 is connected to the inner wall of the indicating rod 102 through a screw.
[0041] Embodiment 4:
[0042] Based on any one of embodiments 1-3, as Figure 2 In the shown embodiment, in order to prevent the float 108 from being stuck at the inner wall of the indicating rod 102, the side of the float 108 is provided with a guide groove matched with each reinforcing rib 107, so that the float 108 slides along each reinforcing rib 107.
[0043] In order to further reduce the friction between the float 108 and the reinforcing rib 107, a polytetrafluoroethylene coating is provided at the part where the float 108 and the guide groove contact.
[0044] Embodiment 5:
[0045] Based on any one of embodiments 1-4, as Figure 3 In the shown embodiment, in order to prevent algae, suspended matter, etc. in the water body from depositing on the side of the indicating rod where the scale is displayed, causing the scale display on the indicating rod 102 to be unclear, a scraper 110 is provided at the surface of the side of the indicating rod 102 where the scale is displayed. The scraper 110 is slidingly connected to the indicating rod 102, and a driving member is used to drive the scraper 110 to slide on the indicating rod 102. The driving member can be in the form of a driving motor 112, which is fixedly connected to the scraper 110. The side of the indicating rod 102 is provided with a rack engaged with the power output wheel of the driving motor 112. In order to reduce the load of the driving motor 112, a speed reducer can also be provided at the driving motor 112.
[0046] In this embodiment, in order to further improve the cleaning effect of the scraper 110 on the scale mark, a spiral water suction pipe 111 can also be added. The spiral water suction pipe 111 can freely extend and retract with the up and down movement of the scraper 110. When the scraper 110 is performing cleaning operation, the spiral water suction pipe 111 sends the liquid at the lower part to the scraper 110 through a lifting pump, thereby improving the cleaning effect of the scraper 110.
[0047] The above-described embodiments are merely preferred specific embodiments of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art, within the technical range disclosed by the present application, according to the technical scheme and the inventive concept of the present application, makes equivalent replacement or change, should be covered in the protection scope of the present application.
Claims
1. A multi-modal data fusion water gauge measurement system comprising a plurality of data acquisition terminals and a back-end server, characterized in that, Each of the data acquisition terminals comprises a indicating rod (102), a data acquisition module and a control unit; The indicating rod (102) is hollow, and a plurality of through holes (104) penetrating the outside are arranged on the outer wall of the indicating rod (102); a float (108) sliding along the axial direction is arranged in the hollow part of the indicating rod (102); a mounting seat is arranged on the indicating rod (102); the data acquisition module comprises a pressure sensor (109), a distance measuring sensor (106) and an image sensor (101); the pressure sensor (109) is arranged at the 0 scale line of the indicating rod (102); the distance measuring sensor (106) is arranged at the top of the indicating rod (102) and cooperates with the float (108); and the image sensor (101) is used for acquiring the reading of the water surface at the indicating rod (102). The pressure sensor (109), the distance measuring sensor (106) and the image sensor (101) are electrically connected to the control unit; and the control unit is connected to the background server in a wired or wireless manner.
2. The multi-modal data fusion gauge measurement system of claim 1, wherein, The upper surface of the float (108) is provided with a laser reflection coating.
3. The multi-modal data fusion gauge measurement system of claim 1, wherein, The inner wall of the indicating rod (102) is provided with a plurality of reinforcing ribs (107).
4. The multi-modal data fusion gauge measurement system of claim 3, wherein, Each reinforcing rib (107) is connected to the inner wall of the indicating rod (102) by a screw.
5. The multi-modal data fusion gauge measurement system of claim 3, wherein, The side of the float (108) is provided with a guide groove cooperating with each reinforcing rib (107), so that the float (108) slides along each reinforcing rib (107).
6. The multi-modal data fusion gauge measurement system of claim 5, wherein, The part of the float (108) in contact with the guide groove is provided with a polytetrafluoroethylene coating.
7. The multi-modal data fusion gauge measurement system of claim 1, wherein, The mounting seat comprises a first base (103) arranged at the bottom of the indicating rod (102) or a second base (105) arranged at the side of the indicating rod (102); the first base (103) extends downward, and the second base (105) extends to the side.
8. The multi-modal data fusion gauge measurement system of claim 1, wherein, The surface of the indicating rod (102) on the side of the scale display is provided with a scraper (110); the scraper (110) and the body of the indicating rod (102) are slidingly connected; and The scraper (110) is driven to slide along the indicating rod (102).
9. The multi-modal data fusion gauge measurement system of claim 8, wherein, A spiral water suction pipe (111) is further included, which sucks water and delivers the water to the scraper (110).
10. The multi-modal data fusion gauge measurement system of claim 1, wherein, The control unit is wirelessly connected to the background server in any one of the following modes: Bluetooth, WiFi, ZigBee, IrDA, TransferJet, GPRS and CDMA.