Buried dynamic ponding monitoring method based on ultrasonic anti-interference technology

Abstract

The invention discloses a buried dynamic ponding monitoring method based on an ultrasonic anti-interference technology, which comprises the following steps of: firstly, installing equipment at a monitoring point, measuring the time interval from transmitting to receiving of sound waves according to a liquid medium type ultrasonic sensor, and the sound wave transmission distance and the distance between the ultrasonic probe and the interface are obtained by combining the compensated sound velocity of the sound wave. According to the system, the current liquid level height can be obtained by utilizing ultrasonic waves to water surface echoes of installed equipment, and the system is used for monitoring the ponding conditions of key positions such as urban low-lying areas, tunnels and overpasses in real time. And the data is transmitted to a remote monitoring center or a cloud platform for processing and analysis through a wireless communication technology, so that timely early warning and auxiliary decision making are realized.

Description

Technical Field

[0001] The invention relates to the technical field of water accumulation monitoring, and in particular to an underground dynamic water accumulation monitoring method based on ultrasonic anti-interference technology. Background Art

[0002] Water accumulation monitoring mainly refers to the liquid level monitoring technology carried out in scenarios such as urban roads, low-lying terrain, underground garages, and spaces prone to water accumulation. Its technical means include sensing technology, data transmission technology, data storage technology, material technology, structural mechanics technology, etc.

[0003] The current mainstream waterlogging monitoring technologies mainly include video imaging technology, remote sensing monitoring technology, liquid conductive sensing technology (electronic water gauge technology), radar sensing technology (radar water level meter technology) and other means.

[0004] Regarding video imaging technology, it uses high-definition video monitoring equipment and video image processing technology to monitor the waterlogging situation, and makes a final judgment through manual observation, realizing a combined technical model of "video monitoring + manual review";

[0005] Regarding remote sensing monitoring technology, it is to use remote sensing technology to monitor regional waterlogging. Through satellite remote sensing and combined with drone inspections, the waterlogging area can be analyzed and judged, realizing a "large area, large district" pan-monitoring qualitative model;

[0006] Regarding liquid conductive sensing technology (electronic water gauge technology), it uses the weak conductivity of water to measure the water level of the electrode to obtain data. The error will not be affected by environmental factors and only depends on the distance between the electrodes. It can automatically detect the water level for a long time and is suitable for water conservancy projects such as rivers, lakes, reservoirs, hydropower stations, irrigation areas and water delivery, as well as water level monitoring in municipal projects such as tap water, urban sewage treatment, and urban road waterlogging.

[0007] Radar sensing technology (radar water level meter technology) is a measuring instrument technology based on the time travel principle. Radar waves run at the speed of light. The running time can be converted into level signals through electronic components. The probe emits high-frequency pulses that propagate at the speed of light in space. When the pulse encounters the surface of the water, it is reflected back and received by the receiver in the instrument, and the distance signal is converted into a liquid level signal to monitor the depth of water accumulation.

[0008] The defects of the prior art are:

[0009] Video imaging technology flaws

[0010] The acquisition of video images may be affected by environmental factors such as lighting conditions and weather changes, which may reduce the clarity of the image and the accuracy of monitoring. In addition, the accurate identification of waterlogging areas may be limited by the resolution of the camera and the performance of the image processing algorithm. Some waterlogging monitoring methods based on video images may need to rely on deep learning models to improve recognition accuracy, but these models may require a large amount of data for training. At the same time, the amount of video data is usually large and needs to be processed and analyzed in real time, which places high demands on computing resources and data processing capabilities, while cameras and other hardware devices may be affected by physical damage or technical failures, which may lead to monitoring interruptions or data loss. In addition, fixed cameras may not cover all potential waterlogging areas, especially in areas with dense urban buildings or complex terrain, resulting in limitations in monitoring viewing angles and coverage. Finally, the large amount of data obtained from video monitoring needs to be post-processed, including data storage, analysis, and visualization, which may require complex software support and professional personnel to operate, making it costly and inefficient.

[0011] Remote sensing monitoring technology flaws

[0012] The spatial resolution of remote sensing monitoring technology may not be sufficient to accurately monitor waterlogging in a small area or specific region, and is not suitable for monitoring waterlogging in small areas. Different application scenarios have different requirements for observation frequency, but the acquisition of existing remote sensing data may be difficult to meet this demand, affecting the ability to monitor rapidly changing waterlogging events. In addition, clouds and other meteorological conditions may affect the acquisition and quality of optical remote sensing data, resulting in the inability to conduct effective monitoring in some cases. At the same time, remote sensing monitoring technology requires complex processing and analysis processes to be converted into useful information, which may involve high costs and time consumption, as well as professional knowledge and technology. All of the above defects have led to high barriers to use and high costs for remote sensing monitoring technology, and are greatly affected by climate change.

[0013] Liquid Conductive Sensing Technology (Electronic Water Level Gauge Technology) Defects

[0014] Although liquid conductive sensing technology (electronic water gauge technology) has high accuracy, it may be affected under certain extreme environmental conditions. In complex environments, such as when the water surface fluctuates greatly, there may be false alarms. Compared with the dynamic water accumulation monitoring method based on ultrasonic anti-interference technology of this patent, the cost of the electronic water gauge may be higher, and the installation of the electronic water gauge requires specific conditions. For example, it may be difficult to install in certain special terrains or structures. Also, because liquid conductive sensing technology (electronic water gauge technology) needs to rely on the mains system and dedicated communication system, the installation process requires coordination with the local power department, communication department, and road administration department, and the management process is cumbersome, which may limit its widespread application in some areas.

[0015] Radar sensing technology (radar water level gauge technology)

[0016] Radar sensing technology (radar water level gauge technology) may cause false alarms due to signal interference or reflection problems in some cases, such as when the surface of the medium fluctuates or there are interference objects. Affecting the measurement results. However, the cost of this technology is usually high, which may limit its popularity in some application scenarios. In actual applications, radar sensing technology (radar water level gauge technology) will encounter data jump problems, which is due to interference with radar waves or stability problems of the equipment itself. During the installation and deployment process, since radar sensing technology (radar water level gauge technology) needs to reasonably select the installation location to avoid interference, such as avoiding installation in the top center to reduce strong wave reflections, and avoiding obstacles such as beams and ladders, this increases the complexity of installation. In terms of operation and maintenance convenience, radar sensing technology (radar water level gauge technology) requires regular maintenance and calibration to maintain measurement accuracy, which increases operation and maintenance costs and workload.

[0017] Therefore, the present invention provides a buried dynamic water accumulation monitoring method based on ultrasonic anti-interference technology to solve the problems raised in the above-mentioned background technology. Summary of the invention

[0018] The purpose of the present invention is to provide a buried dynamic water accumulation monitoring method based on ultrasonic anti-interference technology to solve the problems raised in the above-mentioned background technology.

[0019] To achieve the above object, the present invention provides the following technical solutions:

[0020] A buried dynamic water accumulation monitoring method based on ultrasonic anti-interference technology comprises the following steps:

[0021] Step 1: Install the equipment at the monitoring point. The equipment consists of an underground sensor and an ultrasonic water level sensor. According to the liquid-medium ultrasonic sensor, the time interval from the emission to the reception of the sound wave is measured, and the distance of the sound wave transmission and the distance of the ultrasonic probe from the interface are obtained by combining the compensated sound wave speed. The current liquid level can be obtained by using the ultrasonic echo from the installed equipment to the water surface;

[0022] Step 2: The terminal of the buried water accumulation measuring point transmits the measured water level information to the cloud platform server through communication;

[0023] Step 3: View data through the web, large screen and mobile terminals.

[0024] Preferably, the liquid level monitoring range of the terminal is 0-150 cm, the monitoring accuracy is at the millimeter level, and the measurement error is ≤0.1% FS.

[0025] Preferably, the terminal supports a low-power sleep working mode, a safety report mode, an automatic reporting mode, and intelligent identification and collection frequency control technology. It intelligently adjusts the data collection frequency according to different rainfall conditions, increases the collection frequency during heavy rain, and reduces the collection frequency on sunny days to extend battery life and reduce network load.

[0026] Preferably, when there is no flooding alarm, a low-power sleep mode is used, and the terminal sends and uploads at a regular reporting time interval. When there is a flooding alarm, the terminal immediately sends and reports a data message. When the water level is lower than the preset value, the safe reporting mode is used, and multiple collection frequencies are automatically controlled. The higher the water level, the automatic additional reporting mode is used, and the collection frequency is higher. When the flooding state returns to normal, the terminal will also immediately send a message to the platform.

[0027] Preferably, the viewed data includes the current power status, water level detection and water immersion status, supports device information configuration and data download functions, and can set operating parameters through the remote interface; it can also configure basic device information, acquisition frequency and other parameters locally through the serial port.

[0028] Preferably, the communication method supports one or more of GPRS, LoRa, 4G, and NB-IOT for data transmission.

[0029] Preferably, the cloud platform server is provided with a streaming media server and a storage server. The storage server can store 5 years of accumulated water data, and the data will not be lost in case of power failure.

[0030] Compared with the prior art, the present invention has the following beneficial effects:

[0031] 1) Accurate monitoring, with a liquid level monitoring range of 0-150 cm, monitoring accuracy reaching millimeter level, and measurement error ≤0.1% FS. 2) Through platform data acquisition technology, equipped with standard data acquisition API interface, it meets the data needs of modern smart city construction.

[0032] Digitalization and informationization needs.

[0033] 3) It adopts low-power narrowband communication technology and is equipped with a large-capacity, high-density built-in battery. It is designed to "work when exposed to water and sleep when not exposed to water", with a standby time of up to 3 years.

[0034] 4) Easy installation without damaging the environment. It adopts underground installation method, does not require supporting construction of poles and bracket projects, has its own power supply and does not require wiring. It has communication transmission methods such as GPRS / LoRa / 4G / NB-IOT and is suitable for a wide range of environments.

[0035] 5) Easy operation and maintenance. It adopts detachable carrier assembly, and consumables can be easily replaced on site, making operation and maintenance easier. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a system schematic diagram of a buried dynamic water accumulation monitoring method based on ultrasonic anti-interference technology.

[0037] Figure 2 It is a schematic diagram of the structure of an underground sensor in an underground dynamic water accumulation monitoring method based on ultrasonic anti-interference technology. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] See also Figures 1-2 In an embodiment of the present invention, a method for monitoring underground dynamic water accumulation based on ultrasonic anti-interference technology includes the following steps:

[0040] Step 1: Install the equipment at the monitoring point. The equipment consists of an underground sensor and an ultrasonic water level sensor. According to the liquid-medium ultrasonic sensor, the time interval from the emission to the reception of the sound wave is measured, and the distance of the sound wave transmission and the distance of the ultrasonic probe from the interface are obtained by combining the compensated sound wave speed. The current liquid level can be obtained by using the ultrasonic echo from the installed equipment to the water surface;

[0041] Step 2: The terminal of the buried water accumulation measuring point transmits the measured water level information to the cloud platform server through communication;

[0042] Step 3: View data through the web, large screen and mobile terminals.

[0043] The liquid level monitoring range of the terminal is 0-150 cm, the monitoring accuracy is at the millimeter level, and the measurement error is ≤0.1% FS.

[0044] The terminal supports low-power sleep mode, safety report mode, automatic additional report mode, intelligent identification and collection frequency control technology, and intelligently adjusts the data collection frequency according to different rainfall conditions, increasing the collection frequency during heavy rain and reducing the collection frequency on sunny days to extend battery life and reduce network load;

[0045] When there is no flooding alarm, the low-power sleep mode is adopted, and the terminal sends and uploads at a scheduled reporting time interval. When there is a flooding alarm, the terminal immediately sends and reports a data message. When the water level is lower than the preset value, the safe reporting mode is adopted, and multiple collection frequencies are automatically controlled. The higher the water level, the automatic additional reporting mode is adopted, and the collection frequency is higher. When the flooding state returns to normal, the terminal will also immediately send a message to the platform.

[0046] The data viewed includes the current power status, water level detection and water immersion status. It supports device information configuration and data download functions. You can set the operating parameters through the remote interface; you can also configure the basic device information, acquisition frequency and other parameters locally through the serial port.

[0047] The communication method supports one or more of GPRS, LoRa, 4G, and NB-IOT for data transmission;

[0048] The cloud platform server is equipped with a streaming media server and a storage server. The storage server can store 5 years of water accumulation data, and the data will not be lost during power failure.

[0049] The key points of this technology include:

[0050] The buried sensor consists of a waterproof and corrosion-resistant 304 stainless steel shell, a water level detection module, a communication module and a built-in battery, and a battery undervoltage alarm.

[0051] The working principle of the present invention is: a system for real-time monitoring of water accumulation in key locations such as low-lying areas in cities, tunnels, and under overpasses. It automatically collects water level data of accumulated water by installing sensors underground, and transmits the data to a remote monitoring center or cloud platform for processing and analysis through wireless communication technology, so as to achieve timely early warning and auxiliary decision-making.

[0052] The core points of the present invention include:

[0053] 1. Sensor technology: Use buried ultrasonic water level sensor to accurately measure the depth of water accumulation;

[0054] 2. Data collection and transmission technology: collect sensor data through data collectors, and upload the data wirelessly to servers or cloud platforms using GPRS / LoRa / 4G / NB-IOT communication modules;

[0055] 3. Intelligent identification and collection frequency control technology: Intelligently adjust the data collection frequency according to different rainfall conditions, increase the collection frequency during heavy rain, and reduce the collection frequency on sunny days to extend battery life and reduce network load.

[0056] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A buried dynamic waterlogging monitoring method based on ultrasonic anti-interference technology, characterized in that: The steps include: Step 1: Install the equipment at the monitoring point. The equipment consists of an underground sensor and an ultrasonic water level sensor. According to the liquid-medium ultrasonic sensor, the time interval from the emission to the reception of the sound wave is measured, and the distance of the sound wave transmission and the distance of the ultrasonic probe from the interface are obtained by combining the compensated sound wave velocity. The current liquid level height can be obtained by using the ultrasonic echo from the installed equipment to the water surface. Step 2: The terminal of the buried water accumulation measuring point transmits the measured water level information to the cloud platform server through communication; Step 3: View data through the web, large screen and mobile terminals.

2. According to claim 1, a buried dynamic waterlogging monitoring method based on ultrasonic anti-interference technology is characterized in that: The liquid level monitoring range of the terminal is 0-150 cm, the monitoring accuracy is at the millimeter level, and the measurement error is ≤0.1% FS.

3. The buried dynamic waterlogging monitoring method based on ultrasonic anti-interference technology according to claim 1 is characterized in that: The terminal supports low-power sleep mode, safety report mode, and automatic report mode.

4. The buried dynamic waterlogging monitoring method based on ultrasonic anti-interference technology according to claim 1 is characterized in that: When there is no water immersion alarm, the low-power sleep mode is adopted, and the terminal sends and uploads at regular reporting time intervals.

5. The buried dynamic waterlogging monitoring method based on ultrasonic anti-interference technology according to claim 1 is characterized in that: When there is a flood alarm, the terminal immediately sends a data message to report. When the water level is lower than the preset value, the safe reporting mode is adopted, and multiple collection frequencies are automatically controlled. The higher the water level, the automatic additional reporting mode is adopted, and the collection frequency is higher. When the flooding status returns to normal, the terminal will also immediately send a message to the platform.

6. The buried dynamic waterlogging monitoring method based on ultrasonic anti-interference technology according to claim 1 is characterized in that: The data viewed includes the current power status, water level detection and water immersion status. It supports device information configuration and data download functions. You can set the operating parameters through the remote interface, and you can also configure the basic device information and collect frequency parameters locally through the serial port.

7. The buried dynamic waterlogging monitoring method based on ultrasonic anti-interference technology according to claim 1 is characterized in that: The communication method supports one or more of GPRS, LoRa, 4G, and NB-IOT for data transmission.

8. The buried dynamic waterlogging monitoring method based on ultrasonic anti-interference technology according to claim 1 is characterized in that: The cloud platform server is provided with a streaming media server and a storage server.

9. The buried dynamic waterlogging monitoring method based on ultrasonic anti-interference technology according to claim 1 is characterized in that: The buried sensor consists of a waterproof and corrosion-resistant 304 stainless steel shell, a water level detection module, a communication module and a built-in battery.

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