Waterlogging integrated monitoring device

Abstract

The utility model discloses an integrated monitoring equipment of waterlogging relates to water level monitoring technical field, including the casing and the static pressure sensor of setting in the casing inside, the casing inside adopts the mode of glue pouring seal, prevents static pressure sensor and leaks, static pressure sensor sets up at the bottom of casing one side, the bottom of casing and located static pressure sensor's outside fixed mounting has the sensor cover plate, be provided with high density dust screen between the sensor cover plate and static pressure sensor, the utility model's beneficial effect is: through adopting the mode of double water level monitoring, realizes 1 centimeter~5 meters water level height's accurate monitoring. It adopts 4G / NB wireless communication mode, supports the external antenna, ensures data stable transmission. The product has fused the water immersion contact sensing and static pressure type liquid level meter, can carry out comprehensive liquid level monitoring.

Description

Technical Field

[0001] This utility model relates to the field of water level monitoring technology, specifically to an integrated monitoring device for urban flooding. Background Technology

[0002] Water level monitoring is a fundamental and crucial task in water resource management, flood control and drought relief, urban drainage, water conservancy projects, and environmental protection. Its core requirements include: Real-time: Timely acquisition of water level changes provides a basis for decision-making (such as reservoir scheduling and flood warning).

[0003] Accuracy: Precise and reliable data is directly related to engineering safety and forecast effectiveness.

[0004] Reliability / Stability: The equipment can operate stably for a long time under various harsh environments (heavy rain, freezing, high temperature, humidity).

[0005] Remote automation: Enables unattended operation and remote data transmission, reducing labor costs and improving monitoring efficiency.

[0006] These demands have driven the evolution of water level monitoring technology from traditional manual methods to modern and intelligent approaches. To this end, we have proposed an integrated urban flooding monitoring device. Utility Model Content

[0007] To address the shortcomings of existing technologies, this utility model provides an integrated urban flooding monitoring device, which solves the problems mentioned in the background section.

[0008] To achieve the above objectives, this utility model provides the following technical solution: an integrated waterlogging monitoring device, comprising a housing and a static pressure sensor disposed inside the housing. The housing is sealed with glue to prevent water leakage from the static pressure sensor. The static pressure sensor is disposed on one side of the bottom of the housing. A sensor cover is fixedly installed on the bottom of the housing, outside the static pressure sensor. A high-density dustproof net is provided between the sensor cover and the static pressure sensor. A first water level contact, a second water level contact, a third water level contact, and a fourth water level contact are fixedly installed sequentially from bottom to top on the side wall of the housing. The housing has four water level contacts, a fifth water level contact, a sixth water level contact, a seventh water level contact, and an eighth water level contact. A water level contact circuit board is fixedly installed on one side inside the housing. The first, second, third, fourth, fifth, sixth, seventh, and eighth water level contacts are all electrically connected to the water level contact circuit board. The circuit board assembly and battery are installed inside the housing by screws. A housing cover is fixedly installed on one side of the housing by screws. An antenna sealing ring is provided between the housing and the housing cover.

[0009] Preferably, water level contact sealing gaskets are provided inside the housing and on the outside of the first, second, third, fourth, fifth, sixth, seventh, and eighth water level contacts to prevent water from entering the housing and damaging the internal electrical components.

[0010] Preferably, it also includes a 4G antenna, the 4G antenna has an internal threaded connection with an antenna fixing screw, the 4G antenna is fixedly connected to the housing through the antenna fixing screw, and the connection between the 4G antenna and the housing is provided with a housing, which can interact with the outside world and facilitate remote information transmission and control.

[0011] Preferably, the top of the housing is provided with an external power supply, which can be powered by an external source.

[0012] Preferably, a nameplate is fixedly installed on one side of the housing cover by screws.

[0013] Preferably, the sensor cover plate is internally threaded with a static pressure sensor screw, and the sensor cover plate is fixedly connected to the housing by the static pressure sensor screw, which facilitates the installation of the static pressure sensor and prevents it from falling off.

[0014] Preferably, the first, second, third, fourth, fifth, sixth, seventh, and eighth water level contacts are all made of 304 stainless steel screws, which can adapt to various usage scenarios, such as underground garages, basements, low-lying areas, underpasses, sunken roads, and other flood-prone areas, and can also play the role of conducting electrical signals.

[0015] Preferably, a filter cotton is provided between the static pressure sensor and the high-density dustproof net to filter out fine particles in the environment, such as sand, gravel, and plankton. This prevents the static pressure sensor from being affected by sand, gravel, and plankton, thus ensuring its accuracy.

[0016] Preferably, this device adopts an IP68 protection rating, which can protect the internal circuitry and battery in various environments and in water depths of up to 5 meters.

[0017] This utility model provides an integrated urban flooding monitoring device with the following advantages: It achieves accurate monitoring of water levels from 1 cm to 5 meters by employing a dual water level monitoring method. It uses 4G / NB wireless communication and supports an external antenna to ensure stable data transmission. The product integrates a water immersion contact sensor and a hydrostatic level gauge for comprehensive level monitoring. It is also equipped with a Bluetooth module for remote debugging and parameter configuration, providing a reliable solution for urban flooding monitoring. It achieves a structure where the water level is triggered by an alarm (1cm-8cm) using a water level contact sensor, and a structure using a hydrostatic level gauge for precise measurement from 8cm to 5m. In the specific scenario of urban flooding monitoring, the hydrostatic level gauge successfully finds the optimal balance between reliability, adaptability, accuracy, and cost. It uses the simplest physical principles to solve the measurement challenges under the most complex on-site conditions (sewage, debris, severe weather), making it more applicable and easier to use than existing technologies. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is an assembly drawing of the present utility model; Figure 3 This is a partial unfolded schematic diagram of the present invention; Figure 4 This is the schematic diagram of the circuit module of this utility model.

[0019] In the diagram: 125, antenna mounting screw; 126, sensor cover plate; 130. First water level contact; 131. Second water level contact; 132. External power supply; 134. Third water level contact; 136. Fourth water level contact; 137. Fifth water level contact; 138. Sixth water level contact; 139. Seventh water level contact; 145. Eighth water level contact; 151. 4G antenna; 152. Housing; 153. Water level contact circuit board; 156. High-density dustproof mesh; 158. Static pressure sensor; 159. Antenna sealing ring; 160. Battery; 163. Circuit board assembly; 167. Water level contact sealing gasket; 165. Nameplate; 175. Static pressure sensor screw; 181. Top cover of the casing. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0021] Please see Figures 1 to 3 This utility model provides a technical solution: an integrated waterlogging monitoring device, including a housing 152 and a static pressure sensor 158 disposed inside the housing 152. The interior of the housing 152 is sealed with glue to prevent water leakage from the static pressure sensor 158. The static pressure sensor 158 is disposed on one side of the bottom of the housing 152. A sensor cover plate 126 is fixedly installed on the bottom of the housing 152 and outside the static pressure sensor 158. A static pressure sensor screw 175 is threaded into the inside of the sensor cover plate 126. The sensor cover plate 126 is fixedly connected to the housing 152 by the static pressure sensor screw 175, which facilitates the installation of the static pressure sensor 158 and prevents it from falling off. A high-density dustproof net 156 is provided between the sensor cover plate 126 and the static pressure sensor 158. First water level contacts 1 are fixedly installed sequentially from bottom to top on the side wall of the housing 152. 30. Second water level contact 131, third water level contact 134, fourth water level contact 136, fifth water level contact 137, sixth water level contact 138, seventh water level contact 139, and eighth water level contact 145. A water level contact circuit board 153 is fixedly installed on one side inside the housing 152. The first water level contact 130, second water level contact 131, third water level contact 134, fourth water level contact 136, fifth water level contact 137, sixth water level contact 138, seventh water level contact 139, and eighth water level contact 145 are all electrically connected to the water level contact circuit board 153. A circuit board assembly 163 and a battery 160 are installed inside the housing 152 by screws. A housing cover 181 is fixedly installed on one side of the housing 152 by screws. An antenna sealing ring 159 is provided between the housing 152 and the housing cover 181.

[0022] Preferably, water level contact sealing gaskets 167 are provided inside the housing 152 and on the outside of the first water level contact 130, the second water level contact 131, the third water level contact 134, the fourth water level contact 136, the fifth water level contact 137, the sixth water level contact 138, the seventh water level contact 139, and the eighth water level contact 145 to prevent water from entering the housing 152 and damaging the internal electrical components. The first water level contact 130, the second water level contact 131, the third water level contact 134, the fourth water level contact 136, the fifth water level contact 137, the sixth water level contact 138, the seventh water level contact 139, and the eighth water level contact 145 are all made of 304 stainless steel screws, which can adapt to various usage scenarios, such as underground garages, basements, low-lying areas, underpasses, sunken roads, and other flood-prone areas, and can also play the role of conducting electrical signals.

[0023] Preferably, it also includes a 4G antenna 151, with an antenna fixing screw 125 internally threaded. The 4G antenna 151 is fixedly connected to the housing 152 via the antenna fixing screw 125. The housing 152 is provided at the connection between the 4G antenna 151 and the housing 152, which can interact with the outside world and facilitate remote information transmission and control. An external power supply 132 is provided on the top of the housing 152, which can be powered by the outside. A nameplate 165 is fixedly installed on one side of the housing cover 181 with screws.

[0024] A filter cotton is installed between the static pressure sensor 158 and the high-density dustproof net 156 to filter out fine particles in the environment, such as sand and plankton. To prevent the static pressure sensor 158 from being affected by sand and plankton, thus ensuring its accuracy, this device adopts an IP68 protection rating, which can protect the internal circuitry and battery in various environments and in water depths of up to 5 meters.

[0025] Please see Figure 4 Detailed Explanation of the Principles of Each Core Circuit Module 1. Power supply and power management circuit Function: Provides a stable and clean DC operating voltage, such as 3.3V or 5V, for the entire circuit system.

[0026] principle: Polarity protection: The input usually has a diode bridge rectifier to ensure that the internal circuit can work correctly regardless of the positive or negative power supply terminals.

[0027] Voltage regulation and filtering: The 24V circuit voltage is reduced to the operating voltage required by the MCU and operational amplifiers using an LDO or switching regulator chip. Extensive LC filter circuitry is included to suppress power supply noise.

[0028] Constant current characteristic: The core design principle of the entire circuit is that the total power consumption must be less than 3.8mA. Only when the output is 4mA can the normal operation of the two-wire circuit be guaranteed.

[0029] 2. Sensors and signal sensing circuits Pressure sensor: Core component: A piezoresistive MEMS silicon chip with a Wheatstone bridge integrated on it.

[0030] Principle: When pressure is applied to the diaphragm, the silicon chip deforms, causing the resistance values ​​of the four arms of the bridge to change, breaking the bridge balance and outputting a millivolt-level differential voltage signal, such as ~10mV / V, which is proportional to the pressure.

[0031] Temperature sensor: Component: Typically a platinum resistance thermometer (Pt100 / 1000) or a thermistor, mounted near the pressure chip.

[0032] Principle: Used for real-time monitoring of sensor temperature so that the MCU can perform high-precision temperature compensation for pressure and zero point.

[0033] 3. Analog signal conditioning circuit Instrumentation amplifier: Function: This is the core of the preamplifier. It is specifically designed to amplify the weak differential signal output from the pressure sensor and has an extremely high common-mode rejection ratio, effectively suppressing common-mode interference from the field.

[0034] Principle: Composed of multiple operational amplifier stages, providing high input impedance, low noise and high gain.

[0035] ADC: Function: Converts amplified analog voltage signals and temperature sensor signals into digital quantities for the MCU to read.

[0036] Principle: High-resolution Σ-Δ ADCs, such as 16-24 bit ADCs, are typically used. These ADCs are highly accurate and have strong anti-interference capabilities, making them very suitable for measuring slowly changing physical quantities.

[0037] 4. Digital Core and Processing Circuit MCU: Function: The brain of the entire instrument.

[0038] principle: Read the digital pressure and temperature values ​​from the ADC.

[0039] Calculation: Execute the firmware program stored in Flash.

[0040] Temperature compensation: Corrects pressure and zero-point temperature drift using pre-stored temperature profiles.

[0041] Linearization: Correcting the nonlinear error of the sensor.

[0042] Engineering conversion: Convert the pressure value to liquid level height using the formula h = P / (ρ * g).

[0043] Control: Managing outputs and communications.

[0044] 5. Output and Communication Circuits V / I conversion circuit: Function: The digital liquid level value calculated by the MCU is converted into an analog voltage by the DAC and then accurately converted into a loop current of 4-20mA.

[0045] Principle: This is a circuit composed of a precision operational amplifier and transistors. It samples the current in the loop and compares it with the reference voltage output by the DAC. Through negative feedback, it controls the conduction level of the transistors, thereby precisely controlling the loop current.

[0046] HART modem: Function: To enable digital communication.

[0047] Principle: When communication is required, the HART chip modulates the digital commands (1 and 0) sent by the MCU into 1200Hz and 2200Hz FSK sine waves, which are then superimposed on the reference voltage of the V / I conversion circuit through a coupling circuit. Upon receiving data, the digital signal is demodulated from the loop and sent to the MCU.

[0048] In summary, this integrated urban flooding monitoring device, after installation, is placed in a low-lying area prone to water accumulation. When flooding occurs, the water level will gradually submerge the water level contacts from bottom to top. When the water level reaches the first water level contact 130, the alarm is triggered, and the backend system can monitor this information. Similarly, when the water level submerges the 2nd to 8th water level contacts, the device's backend system will immediately issue relevant alarms. As the water level continues to rise, the static pressure sensor 158 monitors the water level and remotely transmits the information to the outside world, thus enabling more accurate water level data acquisition.

[0049] All standard parts used in this application can be purchased from the market, and can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment all adopt conventional models in the prior art. The installation methods between equipment are also the same as conventional installation methods in the prior art. For example, the two ends of the shaft-shaped parts are connected by bearings, the connection position of the valve component is provided with anti-leakage rubber strips, the outside of the threaded rod or screw is provided with dust cover, and the equipment can be driven by either built-in battery or external power supply. The control method is automatic control by a controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art and is common knowledge in the field. Since this utility model is mainly used to protect mechanical devices, this utility model will not explain the control method and circuit connection in detail. The external controller mentioned in the specification can play a control role for the electrical components mentioned in this article, and the external controller is a conventional known device.

[0050] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An integrated waterlogging monitoring device, comprising a housing (152) and a static pressure sensor (158) disposed inside the housing (152), characterized in that: The static pressure sensor (158) is located on one side of the bottom of the housing (152). A sensor cover plate (126) is fixedly installed on the bottom of the housing (152) and outside the static pressure sensor (158). A high-density dustproof net (156) is provided between the sensor cover plate (126) and the static pressure sensor (158). The first water level contact (130), the second water level contact (131), the third water level contact (134), the fourth water level contact (136), the fifth water level contact (137), the sixth water level contact (138), the seventh water level contact (139), and the eighth water level contact (145) are fixedly installed on the side wall of the housing (152) from bottom to top. The interior of the housing (152) A water level contact circuit board (153) is fixedly installed on one side of the housing. The first water level contact (130), the second water level contact (131), the third water level contact (134), the fourth water level contact (136), the fifth water level contact (137), the sixth water level contact (138), the seventh water level contact (139), and the eighth water level contact (145) are all electrically connected to the water level contact circuit board (153). A circuit board assembly (163) and a battery (160) are installed inside the housing (152) by screws. A housing cover (181) is fixedly installed on one side of the housing (152) by screws. An antenna sealing ring (159) is provided between the housing (152) and the housing cover (181).

2. The integrated urban flooding monitoring equipment according to claim 1, characterized in that: Water level contact sealing gaskets (167) are provided inside the housing (152) and on the outside of the first water level contact (130), the second water level contact (131), the third water level contact (134), the fourth water level contact (136), the fifth water level contact (137), the sixth water level contact (138), the seventh water level contact (139), and the eighth water level contact (145).

3. The integrated urban flooding monitoring equipment according to claim 1, characterized in that: It also includes a 4G antenna (151), the 4G antenna (151) is internally threaded with an antenna fixing screw (125), the 4G antenna (151) is fixedly connected to the housing (152) by the antenna fixing screw (125), and the housing (152) is provided at the connection between the 4G antenna (151) and the housing (152).

4. The integrated urban flooding monitoring equipment according to claim 1, characterized in that: An external power supply (132) is provided on the top of the housing (152).

5. The integrated urban flooding monitoring equipment according to claim 1, characterized in that: A nameplate (165) is fixedly installed on one side of the housing cover (181) by screws.

6. The integrated urban flooding monitoring equipment according to claim 1, characterized in that: The sensor cover (126) is internally threaded with a static pressure sensor screw (175), and the sensor cover (126) is fixedly connected to the housing (152) by the static pressure sensor screw (175).

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