Multi-signal compatible dam seepage pressure seepage monitoring device

Abstract

The utility model belongs to the technical field of hydraulic engineering monitoring, concretely relates to a dam seepage pressure seepage monitoring device of multi -signal compatibility. The device includes measurement module, and measurement module includes multi -signal input interface and treater, and multi -signal input interface is used for connecting the monitoring sensor of different signal type, and the monitoring data of corresponding monitoring sensor is gathered, and the treater is used for processing the monitoring data of gathering to obtain the measurement result, and only one measurement module can gather the sensor data of various signal types including difference resistance type seepage pressure gauge, vibrating wire type seepage pressure gauge, pressure resistance type seepage pressure gauge, water weir gauge and electromagnetic flowmeter, need not again according to sensor signal type respectively deploying different measurement module, reduced the deployment number of measurement module, and wiring is simple, realizes multi -parameter integration monitoring, is applicable to the long -term deployment technical scheme of complex dam body environment, can realize the full -automatic monitoring of dam seepage seepage pressure.

Description

Technical Field

[0001] This utility model belongs to the field of water conservancy engineering monitoring technology, specifically relating to a multi-signal compatible dam seepage pressure and flow monitoring device. Background Technology

[0002] Water conservancy projects are crucial infrastructure for economic development, with small reservoirs playing a vital role in flood control, irrigation, and water supply. Small reservoirs are constructed to relatively low standards, are numerous, and widely distributed. Statistics show that there are over 90,000 small reservoirs, accounting for 95.3% of the total number of reservoirs, and most of their dams are earth-rock dams; 98.1% of levees of grade 5 and above are earthen structures. As critical flood control facilities, the safety of reservoir dams directly impacts the lives and property of the people. Therefore, it is essential to strengthen the safety management of reservoir dams, improve supporting safety monitoring facilities, and enhance reservoir safety monitoring capabilities. Monitoring seepage pressure and flow rate in dams is a crucial means of enhancing reservoir safety monitoring capabilities. By constructing a seepage monitoring system to monitor seepage pressure and flow rate, automatic monitoring of the phreatic line, seepage pressure, and flow rate formed by seepage within hydraulic structures and their foundations can be achieved. This allows for the determination of seepage pressure distribution and phreatic line location at monitoring sections of the dam body, understanding of seepage pressure and its distribution in key components such as the dam foundation soil, seepage barriers, and drainage facilities, and monitoring of seepage flow rates in the dam body, foundation, bypass seepage, and guide seepage. Analysis can then determine whether the conditions are normal and the degree and causes of potential adverse effects, providing a basis for engineering maintenance, repair, and safe operation, as well as providing reference data for the surveying, design, construction, and scientific research of water conservancy projects.

[0003] When monitoring the seepage pressure and flow rate of a dam, it is necessary to deploy seepage pressure sensors or seepage flow rate sensors at multiple measurement points. After data collection and processing by a measurement module, the data is transmitted to the monitoring platform via a communication module. Because seepage pressure sensors or seepage flow rate sensors with different measurement principles output different signal types—for example, differential resistance piezometers output differential resistance signals related to resistance changes, vibrating wire piezometers output vibrating wire signals related to frequency, piezoresistive piezometers output digital piezoresistive electrical signals, and some other piezometers output analog current or voltage signals, weir gauges output analog voltage signals, and electromagnetic flowmeters output analog current signals, etc.—the signal types of these sensors are all different. Existing measurement modules only support the acquisition of a single signal type, resulting in the need to deploy different measurement modules for different sensors when monitoring dams, leading to complex wiring and high monitoring costs. Utility Model Content

[0004] The purpose of this invention is to provide a dam seepage pressure and flow monitoring device that is compatible with multiple signals, in order to solve the problem that the existing dam seepage pressure and flow monitoring devices only support one signal type, resulting in complex wiring and high cost.

[0005] This utility model provides a multi-signal compatible dam seepage pressure and flow monitoring device to solve the above-mentioned technical problems. The device includes a measurement module, which comprises a multi-signal input interface and a processor. The multi-signal input interface is used to connect to monitoring sensors of corresponding signal types and collect monitoring data from these sensors. The multi-signal input interface includes a vibrating wire signal channel, a differential resistance signal channel, a digital signal channel, and an analog signal channel. Specifically, the vibrating wire signal channel is used to connect to a vibrating wire piezometer, the differential resistance signal channel is used to connect to a differential resistance piezometer, the digital signal channel is used to connect to a piezoresistive piezometer, and the analog signal channel is used to connect to a weir gauge and / or an electromagnetic flowmeter. The analog signal channel is also used to connect to a seepage pressure sensor with an analog signal type. The processor processes the collected monitoring data to obtain measurement results.

[0006] Furthermore, the measurement module is housed inside the protective enclosure, and the digital signal channel is also used to connect at least one of the following: a pressure sensor housed inside the protective enclosure, a temperature sensor housed inside the protective enclosure, a temperature sensor housed in each channel of the multi-signal input interface, a dam temperature sensor, and a dam meteorological sensor.

[0007] Furthermore, the analog signal channel is a voltage / current channel, and the measurement module is also equipped with a switching switch, which is used to switch the analog signal channel to a current channel or a voltage channel according to the signal type connected to the analog signal channel.

[0008] Furthermore, the device also includes a smart terminal module. Both the smart terminal module and the measurement module are equipped with a LoRa module and / or a serial port. The smart terminal module communicates wirelessly with the measurement module via the LoRa module in a LoRa networking manner, or the smart terminal module communicates with the measurement module via the serial port via a wired connection to obtain the measurement results from the measurement module and upload the measurement results.

[0009] Furthermore, the smart terminal module is also equipped with at least one of an RJ45 interface, a WIFI module, and a Bluetooth module. The RJ45 interface is used to enable the smart terminal module to communicate with the host computer on site via Ethernet, the WIFI module is used to enable the smart terminal module to communicate with the mobile monitoring equipment on site via WIFI, and the Bluetooth module is used to enable the smart terminal module to communicate with the mobile monitoring equipment on site via Bluetooth.

[0010] Furthermore, the intelligent terminal module is also equipped with a 4G module, a 5G module, or a BeiDou satellite data transmission terminal, which enables remote communication with the monitoring platform.

[0011] Furthermore, the internal circuit boards of the measurement module and the smart terminal module are encapsulated with moisture-proof material.

[0012] Furthermore, the measurement module is also equipped with status indicator lights.

[0013] Furthermore, the device also includes a power supply module, which includes a solar panel, a battery, and a battery management system. The battery management system includes an AC power interface. The power supply module is used to provide the measurement module and the smart terminal module with three power supply methods: AC power, solar power, and battery power.

[0014] Furthermore, the measurement module, intelligent terminal module, storage battery, and battery management system are housed in a protective enclosure, which and the solar panel are mounted on a pole, with a lightning rod installed at the top of the pole.

[0015] The beneficial effects of the above technical solution are as follows: This utility model is an improved invention that integrates a vibrating wire signal channel, a differential resistance signal channel, a digital signal channel, and an analog signal channel into a measurement module. Only one measurement module is needed to collect sensor data of various signal types, including differential resistance piezometers, vibrating wire piezometers, piezoresistive piezometers, weir gauges, and electromagnetic flowmeters. There is no need to deploy different measurement modules according to the sensor signal type, which reduces the number of measurement modules deployed. Furthermore, the wiring is simple, and it realizes integrated monitoring of multiple parameters. It is a technical solution suitable for long-term deployment in complex dam environments and can realize fully automatic monitoring of dam seepage pressure. Attached Figure Description

[0016] Figure 1 This is a framework diagram of a dam seepage pressure and seepage monitoring device according to an embodiment of the present invention;

[0017] Figure 2-a This is a front view of the measuring module of an embodiment of the device of this utility model;

[0018] Figure 2-b This is a side view of the measuring module of an embodiment of the device of this utility model;

[0019] Figure 3 This is a system composition diagram of seepage and seepage pressure monitoring according to an embodiment of the present invention;

[0020] Figure 4 This is a schematic diagram of the installation of a dam seepage pressure and seepage monitoring device from one perspective of the implementation of this utility model.

[0021] Figure 5 This is a schematic diagram of the installation of a dam seepage pressure monitoring device, which is another perspective on the implementation of this utility model.

[0022] Attached label: 1-Multi-signal input interface; 2-LORA antenna interface; 3-Status indicator light; 4-Power interface; 5-Grounding terminal; 6-RS485 positive terminal; 7-RS485 negative terminal; 8-Protective enclosure; 9-Solar panel; 10-Pole; 11-Lightning rod. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this utility model clearer, the specific embodiments of this utility model will be further described below with reference to the accompanying drawings.

[0024] This invention integrates a vibrating wire signal channel, a differential impedance signal channel, a digital signal channel, and an analog signal channel into a measurement module to achieve integrated monitoring of multiple parameters.

[0025] Device Implementation

[0026] This utility model discloses a multi-signal compatible dam seepage pressure and flow monitoring device, which is used to realize the safety monitoring of dams by reservoirs.

[0027] In one embodiment, the device includes only a measurement module, such as Figure 1 As shown, the measurement module includes a multi-signal input interface and a processor. The multi-signal input interface is used to connect monitoring sensors of corresponding signal types and collect monitoring data from these sensors. The multi-signal input interface includes a vibrating wire signal channel, a differential resistance signal channel, a digital signal channel, and an analog signal channel. The analog signal channel is a voltage / current channel. Specifically, the vibrating wire signal channel is used to connect to a vibrating wire piezometer, the differential resistance signal channel is used to connect to a differential resistance piezometer, the digital signal channel is used to connect to a piezoresistive piezometer, and the analog signal channel is used to connect to a weir gauge and / or an electromagnetic flow meter. The analog signal channel is also used to connect to a piezometer with an analog signal type. The measurement module also includes a switching switch, which is used to switch the analog signal channel to a current channel or a voltage channel according to the signal type connected to it. The switching switch is controlled by the processor.

[0028] The frequency measurement range of the vibrating wire signal channel can be set to 30~12000Hz, with an acquisition accuracy of 0.05Hz~0.25Hz. It can automatically identify sensors from 50Ω to 5KΩ, and supports multiple excitation methods and temperature monitoring. The sensor resistance measurement range of the differential resistance signal channel is 0.01Ω~500Ω, the resistance ratio measurement range is 0~50000, the resolution is 0.001Ω, and the accuracy is 0.03Ω. The analog signal channel is compatible with 0~10V or 4~20mA input and uses a multi-channel switch to switch between current and voltage channels.

[0029] The measurement module is housed within a protective enclosure. The digital signal channel is also used to connect at least one of the following: a pressure sensor housed within the protective enclosure; a temperature sensor housed within the protective enclosure; a temperature sensor located in each channel of the multi-signal input interface; a dam temperature sensor; and a dam meteorological sensor. Preferably, the digital signal channel is also used to connect to the pressure sensor housed within the protective enclosure, the temperature sensor housed within the protective enclosure, the temperature sensor located in each channel of the multi-signal input interface, the dam temperature sensor, and the dam meteorological sensor.

[0030] The measurement module has both active and passive data acquisition capabilities from sensors. Active acquisition includes real-time and timed acquisition, while passive acquisition refers to immediate acquisition and automatic reporting when monitored data exceeds a threshold. The measurement module also collects status data from various devices and sensors within the monitoring system, enabling the monitoring platform to monitor the status, lifespan, and maintenance status of these devices and sensors. The measurement module features encrypted acquisition capabilities, with a customizable encryption period.

[0031] The processor processes the collected monitoring data to obtain measurement results, including monitoring elements such as seepage pressure, seepage flow rate (or seepage velocity), pressure, temperature, battery voltage, and air pressure. For example, the measurement module acquires monitoring data from a vibrating wire piezometer via a vibrating wire signal channel. The vibrating wire piezometer's monitoring data is frequency data, and the processor converts the frequency into the corresponding seepage pressure value, which is the measurement result. Similarly, the measurement module acquires monitoring data from a weir via a voltage channel. The weir's monitoring data is voltage, and the processor converts the voltage into the corresponding seepage flow rate, which is the measurement result. The processor's processing of various collected monitoring data to obtain measurement results is existing technology and will not be described in detail here.

[0032] When transmitting data, the processor includes the device ID, signal type identifier (sine wave / differential impedance / analog / digital), and CRC checksum. Different message transmission formats can be implemented using existing communication technologies. The processor also features local storage and power-off storage functions and supports public network wireless communication. It supports storing at least one year of hourly monitoring data using a circular storage structure, meaning that when the storage is full, the newest data automatically overwrites the older data.

[0033] The device also includes a lightning protection module, which mainly consists of a lightning rod, down conductor, grounding device, surge protector (SPD), and other connecting conductors. SPDs are classified according to their function into power supply (DC and AC) SPDs, signal SPDs, and antenna feeder SPDs.

[0034] In another implementation, such as Figure 3 As shown, the multi-signal compatible dam seepage pressure and flow monitoring device includes a measurement module and a smart terminal module. The smart terminal module communicates with the measurement module. Both the smart terminal module and the measurement module are equipped with a LoRa module and / or a serial port. The serial port can be an RS485 serial port or an RS232 serial port. The processor of the measurement module performs wireless networking control. The communication distance in LoRa mode can reach 1 km, and the communication method in LoRa mode uses a time-division wake-up mechanism. The smart terminal module communicates wirelessly with the measurement module through the LoRa module in a LoRa networking manner, or the smart terminal module communicates with the measurement module via a serial port in a wired manner to obtain the measurement results from the measurement module and send the measurement results to the monitoring platform. Figure 2-a and Figure 2-b As shown, the measurement module includes a multi-signal input interface 1, a LoRa antenna interface 2, a status indicator light 3, a power interface 4, a ground terminal 5, an RS485 positive terminal 6, and an RS485 negative terminal 7. The multi-signal input interface 1 uses a five-terminal interface and supports the connection of up to 16 monitoring sensors of various signal types. The status indicator light 3 displays the operating status of the measurement module.

[0035] The intelligent terminal module supports high-speed and low-latency data transmission, and enables two-way communication and remote control. It supports encryption during data transmission, resume interrupted transmission, and transmission according to user-defined format protocols. It supports data security management using encryption, signature, authentication, or other mechanisms based on user-defined standard protocol algorithms. It supports hourly data reporting and additional data reporting, such as reporting data when a set threshold is exceeded. The intelligent terminal module also sends short messages to the monitoring platform in real time. These short messages are used to test the network connectivity between the monitoring platform and the intelligent terminal module, and to test the correct parsing of the message data. The intelligent terminal has a processing unit to determine whether data transmission was successful and automatically resends any unsuccessfully transmitted data. The intelligent terminal has a self-test function, periodically reporting self-test data such as charging voltage, charging power, battery voltage, output power, temperature, signal strength, and location information.

[0036] The intelligent terminal module is equipped with at least one of the following: an RJ45 interface, a Wi-Fi module, and a Bluetooth module. The RJ45 interface enables the intelligent terminal module to communicate with the host computer in the field via Ethernet. The Wi-Fi module enables the intelligent terminal module to communicate with the mobile monitoring device in the field via Wi-Fi. The Bluetooth module enables the intelligent terminal module to communicate with the mobile monitoring device in the field via Bluetooth. The mobile monitoring device may include a mobile phone or tablet. Commands are then sent from the host computer or mobile monitoring device to the data acquisition instrument (composed of a measurement module and an intelligent terminal module). These commands include calling and restarting the data acquisition instrument, querying its data, and modifying its parameters. Querying the data acquisition instrument includes its operating status information, which includes, but is not limited to, battery voltage, signal strength, and sensor operating status. Measurement data is also uploaded to the host computer or mobile monitoring device in the field.

[0037] Because wired transmission has a high failure rate during the rainy season, in order to ensure the reliability of data transmission, the smart terminal module is also equipped with a 4G module (including a 4G antenna and SIM card), a 5G module (SIM card), or a Beidou satellite data transmission terminal. It communicates remotely with the monitoring platform through the 4G module, 5G module, or Beidou satellite data transmission terminal to send measurement data up or receive instructions remotely issued by the monitoring platform.

[0038] The device also includes a power supply module, which comprises a solar panel, a battery, and a power management system. This module provides the measurement module and smart terminal module with power from AC mains, solar energy, and the battery. The battery management system (i.e., the charge / discharge controller) includes an AC mains interface, a solar energy interface, a load output port, an RS485 serial port, and a battery interface. A self-resetting switch is installed between the AC mains interface and the AC mains power supply. This switch closes when switching to AC mains power and opens when AC mains power is unavailable. The smart terminal also includes a power interface and a power status interface. The load output port connects to the power interface for power supply, and the RS485 serial port is used to output battery status information for battery status monitoring.

[0039] The internal circuit boards of the measurement module and the smart terminal module are encapsulated with moisture-proof material, which is polyurethane adhesive.

[0040] like Figure 4 and Figure 5 As shown, the measurement module, intelligent terminal module, battery, and battery management system are housed in the protective enclosure 8. The protective enclosure 8 and solar panel 9 are mounted on the pole 10. The lightning rod 11 of the lightning protection module is mounted at the top of the pole 10. The down conductor, grounding device, surge protector, and other connecting conductors of the lightning protection module are housed in the protective enclosure. This deployment method enables automatic monitoring of multi-parameter integrated seepage and pressure without the need for personnel on-site, and is suitable for long-term deployment in complex dam environments.

Claims

1. A multi-signal compatible dam seepage pressure and flow monitoring device, comprising a measurement module, characterized in that, The measurement module includes a multi-signal input interface and a processor. The multi-signal input interface is used to connect to monitoring sensors of corresponding signal types and collect monitoring data from the corresponding monitoring sensors. The multi-signal input interface includes a vibrating wire signal channel, a differential resistance signal channel, a digital signal channel, and an analog signal channel. The vibrating wire signal channel is used to connect to a vibrating wire piezometer, the differential resistance signal channel is used to connect to a differential resistance piezometer, the digital signal channel is used to connect to a piezoresistive piezometer, the analog signal channel is used to connect to a weir gauge and / or an electromagnetic flow meter, and the analog signal channel is also used to connect to a piezometer with an analog signal type. The processor is used to process the collected monitoring data to obtain measurement results.

2. The multi-signal compatible dam seepage pressure and flow monitoring device according to claim 1, characterized in that, The measurement module is installed inside the protective enclosure. The digital signal channel is also used to connect at least one of the following: a pressure sensor installed inside the protective enclosure, a temperature sensor installed inside the protective enclosure, a temperature sensor installed in each channel of the multi-signal input interface, a dam temperature sensor, and a dam meteorological sensor.

3. The multi-signal compatible dam seepage pressure and flow monitoring device according to claim 1 or 2, characterized in that, The analog signal channel is a voltage / current channel. The measurement module is also equipped with a switching switch, which is used to switch the analog signal channel to a current channel or a voltage channel according to the signal type connected to the analog signal channel.

4. The multi-signal compatible dam seepage pressure and flow monitoring device according to claim 1, characterized in that, The device also includes a smart terminal module. Both the smart terminal module and the measurement module are equipped with a LoRa module and / or a serial port. The smart terminal module communicates wirelessly with the measurement module via the LoRa module in a LoRa networking manner, or the smart terminal module communicates with the measurement module via the serial port via a wired connection to obtain the measurement results from the measurement module and upload the measurement results.

5. The multi-signal compatible dam seepage pressure and flow monitoring device according to claim 4, characterized in that, The smart terminal module is also equipped with at least one of an RJ45 interface, a WIFI module, and a Bluetooth module. The RJ45 interface enables the smart terminal module to communicate with the host computer on site via Ethernet. The WIFI module enables the smart terminal module to communicate with the mobile monitoring equipment on site via WIFI. The Bluetooth module enables the smart terminal module to communicate with the mobile monitoring equipment on site via Bluetooth.

6. The multi-signal compatible dam seepage pressure and flow monitoring device according to claim 5, characterized in that, The intelligent terminal module is also equipped with a 4G module, a 5G module, or a BeiDou satellite data transmission terminal, which enables remote communication with the monitoring platform.

7. The multi-signal compatible dam seepage pressure and flow monitoring device according to claim 4, characterized in that, The internal circuit boards of the measurement module and the smart terminal module are encapsulated with moisture-proof material.

8. The multi-signal compatible dam seepage pressure and flow monitoring device according to claim 1, characterized in that, The measurement module is also equipped with status indicator lights.

9. The multi-signal compatible dam seepage pressure and flow monitoring device according to claim 4, characterized in that, The device also includes a power supply module, which includes a solar panel, a battery, and a battery management system. The battery management system includes an AC power interface. The power supply module is used to provide the measurement module and the smart terminal module with three power supply methods: AC power, solar power, and battery power.

10. The multi-signal compatible dam seepage pressure and flow monitoring device according to claim 9, characterized in that, The measurement module, intelligent terminal module, battery and battery management system are housed in a protective enclosure, which and solar panels are mounted on a pole, and a lightning rod is installed at the top of the pole.

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