Flood disaster state distributed sensing equipment and system for power equipment facilities

Abstract

The invention relates to the field of power equipment monitoring, and discloses a flood disaster state distributed sensing device and system. The equipment integrates a flood early warning monitoring terminal, a liquid level / dip angle / rainfall sensor, a camera device and the like, collects liquid level, dip angle, rainfall and image data through multiple sensors, and uploads the data to a central data center through a communication network after preprocessing. The main control board comprises various communication modules to achieve protocol conversion and edge calculation, and a protection box hoop is installed and integrated with a tilt angle sensor and a liquid level sensor to achieve protection through a punched PVC square pipe. The system adopts solar power supply and 4G communication, and supports distributed point distribution and risk partition encryption. According to the scheme, the problems that traditional monitoring is poor in real-time performance and single in parameter are solved, multi-dimensional real-time monitoring, intelligent early warning and efficient operation and maintenance are achieved, and the method has the advantages of being high in precision and reliability and easy to deploy.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of power equipment facility monitoring, in particular to a flood disaster state distributed sensing device and system for power equipment facility. BACKGROUND

[0002] In the power system, power equipment facilities (such as power transmission towers, substations, etc.) are often distributed in areas susceptible to flood disasters, such as rivers and lakes. Flood disasters can cause equipment to be submerged, tilted, or collapsed, which in turn can lead to power outages, affecting social production and daily life, and even threatening life and property safety.

[0003] Traditional flood disaster monitoring methods have obvious shortcomings. On the one hand, manual inspection methods are inefficient and cannot obtain real-time equipment status information in a wide range and multiple areas, and it is difficult to carry out work in adverse weather conditions. On the other hand, a single monitoring device can only obtain a single water level parameter and cannot fully reflect the complex environmental conditions of power equipment facilities, resulting in inaccurate and timely early warning and assessment of flood disasters.

[0004] With the development of intelligent sensing technology, communication technology and Internet of Things technology, it has become a pressing technical problem to achieve comprehensive monitoring of power equipment facilities in flood disasters.

[0005] Therefore, it is of great practical significance to develop a distributed sensing device that can monitor the flood disaster state of power equipment facilities in real time and comprehensively.

[0006] Therefore, there is a need for a flood disaster state distributed sensing device and system for power equipment facilities. SUMMARY

[0007] In view of the problem that the prior art cannot monitor the flood disaster state of power equipment facilities in real time and comprehensively, the present application provides a flood disaster state distributed sensing device and system for power equipment facilities, which can monitor the flood disaster state of power equipment facilities in real time, comprehensively and automatically. The specific technical solutions are as follows:

[0008] A kind of flood disaster state distributed sensing equipment for electric power equipment facility, including flood early warning monitoring terminal, liquid level sensor, inclination sensor, rainfall sensor, camera device, tower and power supply device;The flood early warning monitoring terminal, liquid level sensor, inclination sensor, rainfall sensor, camera device and power supply device are installed on the tower respectively;The flood early warning monitoring terminal is connected with the liquid level sensor, inclination sensor, rainfall sensor and camera device respectively, to collect and pre-process the liquid level, inclination, rainfall and image of the area where electric power equipment facility is located by each sensor;The flood early warning monitoring terminal is connected with external central data center by communication network, to upload the pre-processed monitoring data;The power supply device is connected with the flood early warning monitoring terminal, to provide power supply for work.

[0009] Further, the flood early warning monitoring terminal is provided on a main control board, and the main control board is provided with a main control CPU, a protocol conversion MCU, a KNX protocol converter, a USB-to-multi-uart module, an Ethernet interface module, a ZigBee communication module, an HBS communication module, a first RS485 communication module, a dry contact input module, a dry contact output module, an RS232 communication module, a second RS485 communication module, a third RS485 communication module, a TF card, an RTC module and a power supply;The main control CPU is connected with the protocol conversion MCU, the KNX protocol converter, the USB-to-multi-uart module, the Ethernet interface module, the first RS485 communication module, the TF card, the RTC module and the power supply respectively;The power supply is a power management module connected with an external power supply device;The USB-to-multi-uart module is further connected with the RS232 communication module and the third RS485 communication module respectively;The protocol conversion MCU is further connected with the ZigBee communication module, the HBS communication module, the second RS485 communication module, the dry contact input module and the dry contact output module respectively;The RS232 communication module is connected with the inclination sensor;The third RS485 communication module is connected with the liquid level sensor;The Ethernet interface module is connected with an external server or host computer;The second RS485 communication module is connected with the camera device;The HBS communication module is connected with the rainfall sensor.

[0010] Further, the main control board and the inclination sensor are integrated in the same protection box.

[0011] Further, the protection box is vertically installed on the tower by using a hoop structure.

[0012] Further, the liquid level sensor uses a pressure type liquid level sensor or a capacitive type liquid level sensor.

[0013] Further, the pressure of the liquid surface of the pressure type liquid level sensor is calculated as follows:

[0014] P = pg h + Po;

[0015] In the formula, P is the pressure on the liquid surface of the sensor; p is the density of the measured liquid; g is the acceleration of gravity; Po is the atmospheric pressure on the liquid surface; and h is the depth of the sensor into the liquid.

[0016] Further, the liquid level sensor is located below the protective box and is fixed vertically along the tower, maintaining a distance of 3 to 5 cm from the ground.

[0017] Further, the liquid level sensor and the connection between it and the flood early warning monitoring terminal are packaged in a PVC square tube.

[0018] Further, the PVC square tube is full of holes.

[0019] A flood disaster state distributed sensing system for power equipment facilities, comprising a central data center and a plurality of flood disaster state distributed sensing devices for power equipment facilities; the central data center comprises a plurality of application servers and a database server; the flood early warning monitoring terminal is connected to the application server through a 4G Internet of Things card, and all data is sent from the flood early warning monitoring terminal to the application server to complete data processing, analysis and early warning; the application server and the database server are connected to store flood disaster state related data.

[0020] Compared with the prior art, the beneficial effects of the present application are:

[0021] I. Multi-dimensional real-time monitoring, data comprehensiveness improved

[0022] Multi-parameter synchronous acquisition: integrated liquid level sensor, inclination sensor, rain sensor, camera device and other multi-element devices, can synchronously monitor multi-dimensional data such as water level height, tower inclination angle, rainfall, and on-site image. Compared with traditional single water level monitoring, it can more comprehensively reflect the comprehensive influence of flood disasters on power equipment, such as predicting the stability of the tower foundation through inclination changes and intuitively evaluating the submersion degree through image data.

[0023] Real-time and preprocessing capability: the flood early warning monitoring terminal performs real-time acquisition and preprocessing on sensor data, and quickly uploads to the central data center through the communication network. Compared with the hysteresis of manual inspection, it can discover abnormalities several hours or even days in advance, and gain time for emergency response.

[0024] II. Intelligent data processing and early warning, response efficiency optimized

[0025] Edge computing and protocol conversion: The main control board integrates a main control CPU, a protocol conversion MCU, and multiple communication modules (such as ZigBee, RS485, Ethernet, etc.), supports Internet of Things protocol conversion (such as MQTT, TCP / IP), and realizes standardized processing and rapid networking access of sensor data. Without manual intervention, data analysis, storage, and uploading can be completed, reducing the cost of manual intervention.

[0026] Linkage rules and automatic alarm: By configuring linkage rules (such as triggering sound and light alarms when the water level exceeds the threshold, automatically pushing messages), the system supports device output, alarm output, and video linkage (Example II). For example, when the liquid level sensor detects that the water level reaches a dangerous threshold, the system automatically starts the camera to shoot the live video and pushes it to the management personnel through the 4G network, realizing the whole process automation of "monitoring-analysis-warning".

[0027] III. Hardware architecture optimization, suitable for complex environments

[0028] Integration and protection design: The main control board and the tilt sensor are integrated in the hoop protection box, which is fixed vertically on the pole tower with lightning protection and water seepage prevention capabilities. The liquid level sensor and its connecting line are packaged in a perforated PVC square tube, which not only protects the equipment from mechanical damage, but also ensures unobstructed drainage through the perforated design to avoid the sensor being covered by debris affecting the accuracy.

[0029] Power supply and communication reliability: The system uses a solar panel + battery power supply system, supports wide voltage input and surge protection, and is suitable for outdoor scenes without fixed power supply; the communication module supports 4G Internet of Things cards, GPRS, Ethernet, etc., ensuring stable data transmission in areas with weak network signals.

[0030] IV. High-precision measurement and flexible deployment

[0031] Sensor technology upgrade: The liquid level sensor uses pressure or capacitance principle, accurately calculates the water level depth through the pressure formula (P = pg h + Po), and the error can be controlled within centimeters; the tilt sensor is based on 3D-MEMS technology, with high resolution and strong anti-vibration ability, can withstand 20000g mechanical impact, and is suitable for complex working conditions in flood disasters.

[0032] Distributed deployment and risk adaptation: The system supports distributed deployment of multiple devices, and through risk assessment zoning, it can be encrypted and distributed. For example, in high-risk river sections or densely populated areas, the density of monitoring nodes is increased to achieve "precise monitoring and key prevention" of flood disasters, with wider coverage and stronger targeting than traditional single-point monitoring.

[0033] V. Cost-effectiveness and operational convenience

[0034] Automation reduces labor costs: full-time monitoring can be achieved without manual inspection, reducing the investment of operation and maintenance personnel; sensors support remote parameter calibration (such as zero drift correction by formula y = (x-a) / b), reducing the frequency of on-site debugging.

[0035] Easy to install and maintain: the device adopts a clamp type installation and a modular design, supports quick disassembly and assembly, and the protective box hides the lead between the protective box and the tower and sets a maintenance hole, facilitating later maintenance and cable replacement and reducing maintenance complexity. BRIEF DESCRIPTION OF DRAWINGS

[0036] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the specific embodiments or the prior art description will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, each element or part is not necessarily drawn according to the actual scale.

[0037] Figure 1 It is a structural schematic diagram of a flood disaster state distributed sensing device for power equipment and facilities;

[0038] Figure 2 It is a structural schematic diagram of a liquid level sensor;

[0039] Figure 3 It is a circuit structural schematic diagram of a flood early warning monitoring terminal;

[0040] Figure 4 It is a charge-discharge circuit structural schematic diagram of a power supply device;

[0041] Figure 5 It is a protective box structural schematic diagram.

[0042] Reference numerals: camera 18, rain sensor 19, power supply device 20, flood early warning monitoring terminal 21, PVC pipe 22, liquid level sensor 23, tower 24. DETAILED DESCRIPTION

[0043] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0044] It should be understood that, when used in the present application, the terms "include" and "contain" indicate the existence of the described features, whole, steps, operations, elements and / or components, but do not exclude the existence or addition of one or more other features, whole, steps, operations, elements, components and / or sets thereof.

[0045] It should also be understood that the terms used in the specification of the present application are only for the purpose of describing specific embodiments and are not intended to limit the present application. As used in the specification and the appended claims of the present application, the singular forms "a," "an," and "the" are intended to include the plural forms unless the context clearly indicates otherwise.

[0046] It should be further understood that the term "and / or" used in the present application means any combination of one or more of the associated listed items and all possible combinations, and includes these combinations.

[0047] Embodiment one

[0048] As Figure 1 It is shown as a structure diagram of a flood disaster state distributed sensing device for power equipment facilities, the distributed sensing device includes a flood early warning monitoring terminal 21, a liquid level sensor 23, an inclination sensor, a rainfall sensor 19, a camera device 18, a tower 24 and a power supply device 20; the flood early warning monitoring terminal 21, the liquid level sensor 23, the inclination sensor, the rainfall sensor 19, the camera device 18 and the power supply device 20 are respectively installed on the tower 24; the flood early warning monitoring terminal 21 is connected with the liquid level sensor 23, the inclination sensor, the rainfall sensor 19 and the camera device 18 respectively, so as to collect and preprocess the liquid level, the inclination, the rainfall and the image of the area where the power equipment facilities are located through each sensor; the flood early warning monitoring terminal 21 is connected with an external server through a communication network, so as to upload the monitoring data after preprocessing; the power supply device 20 is connected with the flood early warning monitoring terminal 21, so as to provide power supply for work.

[0049] The flood early warning monitoring terminal 21 in the device of the present application can realize sensor data collection, processing and storage, has efficient data processing capacity and edge computing capacity. When the flood disaster risk is sensed, it can timely send alarm information to the outside through the communication network, and has high stability and reliability, can stably operate for a long time, also has expansibility and flexibility, and can be improved according to requirements.

[0050] In specific implementation, the flood early warning monitoring terminal 21 realizes the functions of rapid networking access of various Internet of Things sensors such as water level and inclination, protocol conversion, automatic collection, analysis, warehousing and calculation, etc. by establishing the protocol library, the communication frame rule library, the device type model library, the parameter real-time library, etc. on the edge side. Further, the flood early warning monitoring terminal 21 supports multiple ways such as Internet of Things MQTT protocol, TCP protocol, UDP protocol, HTTP protocol and Kafka to interface with the Internet of Things platform.

[0051] Further, the main hardware modules of the flood early warning monitoring terminal 21 mainly participate in work, can collect the sensors of monitoring water level and inclination, and is equipped with rich data collection, control, monitoring and transmission interface, USB interface, RS232 or RS485 interface with optical coupling isolation, effectively prevent lightning damage to the terminal, adaptive 100 Mbps Ethernet interface, responsible for network connection or device connection, data interaction communication, realize intelligent platform information management, wireless communication module, support full network 4G wireless communication, signal coverage range is wide, communication quality is high, power management module and other hardware modules. The power management module has outdoor power supply, lithium battery and uninterrupted power management, has the functions of wide voltage input, reverse connection protection, overcurrent protection, surge protection, etc., effectively guarantees the normal operation of the equipment. Among them, the CPU is mainly responsible for the scheduling of the operating system, processing virtual private network requests and other work, the memory provides the space for the virtual private network module to run, and the inclination sensor and the liquid level sensor 23 upload the collected data to the CPU for processing through the RS232 or RS485 interface.

[0052] Specifically, as Figure 3As shown, the flood early warning monitoring terminal 21 is provided on a main control board, and the main control board is provided with a main control CPU 1, a protocol conversion MCU 2, a KNX protocol converter 3, a USB-to-multi-UART module 4, an Ethernet interface module 5, a ZigBee communication module 6, an HBS communication module 7, a first RS485 communication module 8, a dry contact input module 9, a dry contact output module 10, an RS232 communication module 11, a second RS485 communication module 13, a third RS485 communication module 14, a TF card 15, an RTC module 16, and a power supply 17; the main control CPU 1 is connected with the protocol conversion MCU 2, the KNX protocol converter 3, the USB-to-multi-UART module 4, the Ethernet interface module 5, the first RS485 communication module 8, the TF card 15, the RTC module 16, and the power supply 17 respectively; the power supply 17 is a power management module connected with an external power supply device 20; the USB-to-multi-UART module 4 is connected with the RS232 communication module 11 and the third RS485 communication module 14 respectively; the protocol conversion MCU 2 is connected with the ZigBee communication module 6, the HBS communication module 7, the second RS485 communication module 13, the dry contact input module 9, and the dry contact output module 10 respectively. The RS232 communication module 11 is connected with a tilt sensor; the third RS485 communication module 14 is connected with a liquid level sensor 23; the flood early warning monitoring terminal 21 can be connected with an external server or an upper computer through the ZigBee communication module 6 or the Ethernet interface module 5, but in the embodiment, the flood early warning monitoring terminal 21 is connected with the external server or the upper computer through the Ethernet interface module 5; the second RS485 communication module 13 is connected with a camera 18; and the HBS communication module 7 is connected with a rain sensor 19. In the specific implementation, attention is paid to the following in the design and implementation process of the flood early warning monitoring terminal 21: the output capacitor (the following capacitor C) of the power supply is closer to the power supply pin of the module, and the wiring width of the power supply line is preferably 2 mm. The RF radio frequency line needs to be matched with 50Ω impedance, and no other signal line should pass below the RF radio frequency line. The wiring of the SIM card is as short as possible, and the corresponding TVS chip should be as close to the SIM card seat as possible. The key signal line and the clock line should meet the 3W principle, and the ground treatment is preferably performed. Further, the main control CPU 1, the protocol conversion MCU 2, the KNX protocol converter 3, the USB-to-multi-UART module 4, the Ethernet interface module 5, the ZigBee communication module 6, the HBS communication module 7, the first RS485 communication module 8, the dry contact input module 9, the dry contact output module 10, the RS232 communication module 11, the second RS485 communication module 13, the third RS485 communication module 14, the TF card 15, the RTC module 16, and the power supply 17 inside can adopt the existing circuit structure with the same function.

[0053] Further, as shown in Figure 5 the main control board and the inclination sensor are integrated in a protection box; further, the protection box is vertically installed on the pole tower 24 in a hoop manner.

[0054] Further, the inclination sensor is used for monitoring the ground inclination. The inclination sensor adopts an intelligent inclinometer, which is widely used in the inclination measurement of poles, bridges, buildings, dangerous houses and other projects. Since the inclinometer outputs a digital signal, remote automatic monitoring can be realized, and the sensor can be connected in series in the form of a bus, increasing the applicability in complex environments. Further, a high-precision dual-axis inclination sensor chip based on 3D-MEMS is recommended, which can provide level measurement instrument level performance. The sensing element of the dual-axis high-precision inclination sensor chip needs to be parallel to the measurement platform during measurement, and the two axes of the sensor need to be perpendicular to each other. Weak temperature dependence, high resolution, low noise and robust sensor design make the high-precision dual-axis inclination sensor chip the best choice for level measurement instruments. The inclination sensor of VTI is not sensitive to high-frequency vibration, because they all increase damping inside the sensing element, and can withstand mechanical impact forces up to 20000g.

[0055] In specific implementation, as shown in Figure 2 the liquid level sensor 23 is used for monitoring the water level and changes, and can adopt a pressure type liquid level sensor 23 or a capacitive type liquid level sensor 23. Further, the pressure type liquid level sensor 23 adopts a static pressure measurement principle: when the liquid level transmitter is put into the measured liquid at a certain depth, the pressure on the liquid-facing surface of the sensor is converted into the liquid level depth. This liquid level transmitter product uses an OEM pressure sensing sensor with a stainless steel isolation diaphragm as a signal measurement element, and is automatically tested by a computer, with laser resistance adjustment process for temperature compensation of zero point and sensitivity in a wide temperature range. The amplification circuit is located in the stainless steel shell, which converts the sensor signal into a standard output signal, fully utilizes the technical advantages of the sensor, and the liquid level transmitter has excellent performance. Anti-interference, small temperature drift, high stability, high measurement accuracy, is an ideal liquid level measuring instrument in the field of industrial automation. The working principle of the pressure type liquid level sensor 23 is as follows:

[0056] The pressure formula on the liquid-facing surface of the pressure type liquid level sensor 23 is:

[0057] P = pg h + Po;

[0058] In the formula, P is the pressure on the liquid-facing surface of the sensor; p is the density of the measured liquid (by default during debugging, according to 1 g / cm 3 ); g is the acceleration of gravity (by default during debugging, according to 9.8 m / s 2 ); Po is the atmospheric pressure on the liquid surface; h is the depth of the sensor immersed in the liquid.

[0059] When the sensor is put into the liquid to be measured to a certain depth, the pressure of the medium to be measured is introduced into the positive pressure chamber of the sensor, the atmospheric pressure Po on the liquid surface is connected to the negative pressure chamber of the sensor through the cable gas guide pipe, so as to offset the Po on the front of the sensor, so that the sensor measures the pressure: pgh. Obviously, by measuring the pressure P, the liquid level depth can be obtained.

[0060] The main features of the product are as follows:

[0061] a) Diffusion silicon pressure sensitive element diaphragm isolation technology is adopted

[0062] b) Cable connection, direct use, easy installation

[0063] c) Amplification circuit adopts integrated chip, wide voltage power supply

[0064] d) Anti-clogging and anti-fouling

[0065] e) Lightning protection, frequency interference design, strong anti-interference ability

[0066] f) Reverse wiring and overvoltage protection, current limiting protection (current limiting output)

[0067] g) Good stability, fast response speed

[0068] Further, the liquid level sensor 23 is located below the protection box and is fixed vertically along the pole tower 24, keeping a distance of 3 cm from the ground. Further, since the liquid level sensor 23 and the connecting line therebetween and the flood early warning monitoring terminal 21 are located at the lower end of the pole tower 24, they are more likely to be damaged due to various reasons, and therefore need to be sleeved in a PVC pipe 22 with a pipe diameter of 1 mm to protect the line. Further, the lower end of the liquid level sensor 23 extension line is provided with a PVC square pipe with full holes, which better protects and fixes the liquid level sensor 23, and the length of the square pipe is about 1-1.5 m. The extension line and the PVC sleeve are installed and fixed along the pole tower 24 or the vertical pole downward below the flood early warning intelligent terminal box, keeping a distance of 3 cm from the ground. The PVC square pipe with full holes is used to protect the liquid level sensor 23 and the connecting line while ensuring drainage function, so as to maintain the detection sensitivity of the liquid level sensor 23.

[0069] In specific implementation, the rain sensor 19 is used to measure the rainfall.

[0070] In a specific implementation, the camera device 18 is used to collect image information of waterlogging conditions in real time and provide intuitive data. The camera device 18 uses a 1080P or higher-definition pixel network camera with an ultra-large aperture, double the amount of light entering, and can capture more light at night. It has built-in dot-matrix infrared lights, low-light color imaging, and supports backlight compensation, strong light suppression, 3D digital noise reduction, etc. It can take clear pictures or video images in real time, and has a 30-meter infrared night vision function to achieve all-weather monitoring day and night. Furthermore, the camera device 18 is powered by a photovoltaic panel. The camera device 18 uses a clamp and screws to fix the camera to the pole tower 24 or the pole bracket, and is connected to the flood warning monitoring terminal 21 via a network cable.

[0071] In a specific implementation, the power supply device 20 includes a solar panel, a battery, and a charge-discharge circuit. The charge-discharge circuit is connected to the solar panel, battery, and flood warning monitoring terminal 21, respectively. Furthermore, the solar panel is secured to the tower 24 using a triangular bracket and clamps, ensuring that the solar panel is installed at a 45° angle. Furthermore, the solar panel is positioned above and as close as possible to the flood warning monitoring terminal 21 to shield it from some rainwater.

[0072] Solar panels are constructed from a PN junction. When sunlight shines on a solar panel, some of the photons in the sunlight enter the PN junction. After absorbing these photons, the PN junction generates an electromotive force across its terminals. This is the photovoltaic effect. Of the photons that strike the solar panel, only a small fraction enters the PN junction and is absorbed, generating a photogenerated electric field within the PN junction. Some of the remaining photons are reflected from the surface of the solar panel and do not enter the panel, while others are converted into heat energy and are not absorbed by the PN junction. The direction of the photogenerated electric field generated in the PN junction is opposite to the potential barrier field within the junction, causing holes in the PN junction to continuously migrate toward the P region and electrons to continuously migrate toward the N region. In the absence of an external circuit, equilibrium is eventually reached. Connecting a load across the electromotive force generated at the PN junction provides power to the load.

[0073] Further, such as Figure 4 As shown, the charge and discharge circuit includes a charging circuit and a discharging circuit.

[0074] The voltage directly generated by solar panels is unstable and low, requiring a charging circuit to boost the voltage level, stabilize the voltage and current, and then be stored in a battery. The discharge circuit then supplies power to each load based on its rated voltage and power. Both the charging and discharge circuits require PWM control provided by the DSP control chip.

[0075] The solar panel is provided with a sunlight intensity detection sensor for detecting the sunlight intensity, and the angle of the solar panel is adjusted by a stepper motor to obtain the maximum light receiving.

[0076] Further, the charging circuit comprises a switch S1, a current control unit and a comparator A1; the output positive pole of the solar panel is connected with the input end of the switch S1 and the non-inverting input end of the comparator A1; the output end of the switch S1 is connected with the input positive pole of the current control unit; the output negative pole of the solar panel is connected with the input negative pole of the current control unit and then grounded; the output end of the comparator A1 is connected with the control end of the switch S1; the inverting input end of the comparator A1 is connected with the output positive pole of the current control unit, the control end and the positive pole of the storage battery; the output negative pole of the current control unit is connected with the negative pole of the storage battery and then grounded.

[0077] Further, the discharging circuit comprises a switch S2, a voltage control unit, a controller unit, a display voltage unit, an inductor L and a capacitor C; the positive pole of the storage battery is connected with the input end of the switch S2 and the input positive pole of the controller unit; the negative pole of the storage battery is connected with the input negative pole of the voltage control unit and then grounded; the output end of the switch S2 is connected with the input positive pole of the voltage control unit; the first output end of the controller unit is connected with the control end of the voltage control unit and the second output end is connected with the display voltage unit; the output positive pole of the voltage control unit is connected with the inductor L in series and then serves as the positive pole of the discharging circuit; the output negative pole of the voltage control unit is grounded and then serves as the negative pole of the discharging circuit; the capacitor C is connected in parallel with the positive and negative poles of the discharging circuit; the positive and negative poles of the discharging circuit are respectively connected with the flood warning monitoring terminal 21.

[0078] The output of the solar panel needs to pass through a switch S1, and the signal for controlling the switch S1 comes from the output signal of the comparator A1. The input signals of the comparator A1 come from the solar panel and the storage battery respectively. After passing through the switch S1, the signal enters the current control unit, and the feedback signal of the current control unit is the voltage signal of the storage battery end. According to the existing voltage value of the storage battery end, the charging current value is controlled. The discharging circuit is a direct-current voltage circuit which can adjust the output voltage, and meanwhile, sampling is carried out at the output end. The controller unit can use a 51 controller, and the display voltage unit uses a liquid crystal screen to display the output voltage value.

[0079] In a specific implementation, the communication network adopts a GPRS network or an Ethernet. The GPRS network is a wireless network developed on the basis of a GSM network and is a wireless packet switching technology, which has unique advantages in data transmission and the like. The GPRS network supports TCP / IP, UDP communication protocols, and a suitable application layer communication protocol is selected according to requirements, so that the communication management task of a server and a plurality of nodes in the front end can be simplified. Currently, the commonly used application layer protocols of the Internet of Things mainly include HTTP, MQTT, XMPP, CoAP and the like. The GPRS module on the market has stable performance, low price, convenient procurement and stable supply.

[0080] Further, the tower 24 adopts a vertical pole structure. The installation requirements of the vertical pole structure are as follows:

[0081] 1. The installation site is selected according to the site position and requirements. When the vertical pole installation mode is adopted, the height is generally not less than 5000 mm except in special cases, the lower end pipe diameter should be 220 mm ± 10 mm, the upper end pipe diameter should be 120 mm ± 5 mm, the pipe wall thickness should be ≥ 6 mm, the vertical pole should be made into a pouring foundation, the foundation depth should be not less than 1500 mm, and the bottom diameter should be not less than 1000 mm.

[0082] 2. The grounding lightning protection device should be provided, and the lightning protection grounding resistance is ≤ 10Ω.

[0083] 3. When the base pit is excavated, the principle of minimizing the excavation surface should be followed. After the base pit is excavated, the site pouring is performed by the construction unit. The site pouring should be strictly performed according to the material proportioning and reinforcement standards of the concrete (such as C20). When the base is installed (poured), the level of the base surface should be ensured to facilitate the installation of the pole body.

[0084] 4. The concrete base should be properly maintained, and the maintenance period should be not less than 20 days.

[0085] 5. The perpendicularity of the mast should be not greater than 1 / 100.

[0086] 6. The main pole and the terminal device box body connecting piece are connected as a whole to fix the box body.

[0087] 7. There should be no wire visible between the box body and the main pole, and there should be water seepage prevention measures. There are two maintenance holes above and below, which are convenient for threading and maintenance.

[0088] 8. The main pole surface treatment: zinc dipping, plastic spraying.

[0089] 9. The pole body is fixed on the base through the bolts (4 or more) installed in the base. After the pole body, grounding body and base are completely installed and fixed, if the bolts are exposed to the ground, the entire flange plate and the fixing part at the bottom of the pole body are completely wrapped with concrete.

[0090] 10. During the erection of the pole, the on-site construction personnel need to wear safety helmets, and set up a construction area within the radius of the pole length, set up warning devices, and prohibit onlookers from entering the construction area. When construction is carried out at night, the on-site construction personnel should wear reflective clothing in addition to wearing safety helmets, and reflective warning strips are set up within the radius of the pole length of the construction area.

[0091] Embodiment two

[0092] A flood disaster state distributed sensing system for power equipment facilities, comprising a plurality of flood disaster state distributed sensing devices for power equipment facilities and a central data center; the central data center comprises a plurality of application servers and a database server; the flood warning monitoring terminal is connected to the application server through a 4G Internet of Things card, and all data is sent from the flood warning monitoring terminal to the application server to complete data processing, analysis and warning; the application server and the database server are connected to store data related to the flood disaster state.

[0093] In specific implementation, the position distribution of the flood disaster state distributed sensing device needs to be divided into zones and then distributed according to risk assessment. According to the prone degree of mountain flood disaster, urban waterlogging, rainfall, earthquake and the like, each zone is subjected to risk assessment, and a suggestion scheme for installation and distribution of the flood disaster state distributed sensing device is proposed according to the risk assessment conclusion. The sites can be appropriately encrypted in high-risk and high-population-density areas.

[0094] Further, if the sensor monitoring value is lower than the lower limit set value, an alarm will be triggered.

[0095] For the adjustable function of the sensor monitoring value, the technical implementation can be linear correction output parameter according to the first equation:

[0096] y=(x–a) / b

[0097] a is a reduction, used to correct the fixed zero drift of the sensor;

[0098] b is a divisor, used to correct the proportion of the coefficient, such as the influence of the installation altitude on the pressure type liquid level sensor 23. The visual interface for measuring the adjustable value is provided, which is set through the calibration value (reduction Dec) and the system (Dec), accurately calculated through the algorithm, and the monitoring value is reset, which is convenient, fast and effective immediately.

[0099] The linkage rules can be configured to realize the linkage logic arrangement of the device input and output, support the device output, linkage output, alarm output and video linkage.

[0100] The linkage rule is a rule that triggers the execution of a certain action according to the input signal. In the flood early warning monitoring terminal 21, the linkage logic arrangement of device input and output can be realized by configuring the linkage rule. For example, when the water level of a certain monitoring point exceeds a certain preset threshold, the output signal of a certain device can be automatically triggered, thereby starting the related early warning system.

[0101] In the arrangement of the linkage rule, the output signal of the device, the linkage output signal, the alarm output signal and the video linkage signal can be set. Specifically, the output signal of the device refers to controlling the device to output a certain signal to trigger a certain action, such as controlling the light switch, opening the gate, etc. The linkage output signal refers to triggering a certain linkage action, such as automatically dialing a phone, sending a message, etc. The alarm output signal refers to triggering a certain alarm action, such as sound and light alarm, short message alarm, etc. The video linkage signal refers to starting the video monitoring system for linkage in certain situations, such as when the monitoring point occurs alarm. The live picture recognition algorithm model module uploaded by the flood early warning monitoring terminal 21 pushes the water level change video warning information in real time.

[0102] Advantages:

[0103] The flood disaster state distributed sensing device for power equipment facilities of the present application can be used in areas near rivers and the like, and has the following characteristics and advantages:

[0104] 1. The device uses various sensors to monitor environmental data such as rainfall and water level in real time, and performs data processing and analysis, realizes real-time monitoring and analysis of waterlogging conditions through early warning systems and data visualization technology, and provides data feedback in a timely manner to take necessary measures.

[0105] 2. It can timely issue early warning information to remind relevant personnel to take action, and improve the waterlogging early warning and emergency response capability, and uses automatic operation mode without manual intervention, reducing labor and time cost.

[0106] 3. It can monitor multiple parameters such as water level and inclination at the same time, and can more comprehensively understand the waterlogging situation.

[0107] 4. It uses high-precision measurement technology to provide accurate data for more accurate understanding of waterlogging conditions.

[0108] 5. It can adapt to different environmental conditions such as severe weather, high temperature, low temperature, etc., and can stably operate in different environments.

[0109] 6. It has good installation and maintenance, can be quickly installed and maintained, and reduces operating costs.

[0110] In summary, with the characteristics and advantages of real-time monitoring, automation operation, multi-parameter monitoring, high-precision measurement, environmental adaptability, and easy installation and maintenance, it can provide a reliable, practical and economic solution for flood control and reduce flood losses.

[0111] The application relates to the field of power equipment monitoring, and discloses a flood disaster state distributed sensing device and system. The device integrates a flood early warning monitoring terminal, a liquid level / tilt angle / rainfall sensor, a camera device and the like on a pole tower, collects liquid level, tilt angle, rainfall and image data through multiple sensors, and uploads central data center through a communication network after preprocessing. The main control board contains multiple communication modules to realize protocol conversion and edge computing, the protection box is installed with a clamp and integrated with a tilt angle sensor, and the liquid level sensor is protected by a perforated PVC square tube. The system is powered by solar energy and communicates through 4G, supports distributed point distribution and risk partition encryption. The scheme solves the problems of poor real-time performance and single parameter of traditional monitoring, realizes multi-dimensional real-time monitoring, intelligent early warning and efficient operation and maintenance, and has the advantages of high precision, high reliability and easy deployment.

[0112] Those skilled in the art can appreciate that the units of the examples described in combination with the embodiments disclosed herein can be realized in electronic hardware, computer software or a combination of both, and the components of the examples have been described in general terms in the foregoing description in order to clarify the interchangeability of hardware and software. Whether the functions are realized in hardware or software depends on the specific application and design constraints of the technical solution. The skilled person can use different methods to realize the described functions for each specific application, but such implementation should not be considered beyond the scope of the present application.

[0113] In the embodiments provided in the present application, it should be understood that the division of units is only a logical functional division, and actual implementation can have another division manner, for example, multiple units can be combined into one unit, one unit can be split into multiple units, or some features can be ignored, etc.

[0114] In addition, each functional unit in each embodiment of the present application can be integrated in one processing unit, or each unit can exist physically, or two or more units can be integrated in one unit. The integrated unit can be realized in the form of hardware or software functional unit.

[0115] The integrated unit, if implemented in the form of a software function unit and sold or used as an independent product, can be stored in a computer readable storage medium. Based on such understanding, the technical solutions of the present application essentially or say the part that contributes to the prior art or the whole or part of the technical solutions can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes a plurality of instructions for causing a computer device (which can be a personal computer, a server or a network device, etc.) to execute all or part of the steps of the method described in the various embodiments of the present application. The aforementioned storage medium includes: a U disk, a read-only memory (ROM, Read-Only Memory), a random access memory (RAM, Random Access Memory), a mobile hard disk, a magnetic disk or an optical disk, and various media that can store program codes.

[0116] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should be covered in the scope of the present application.

Claims

1. A distributed sensing device for flood disaster status of power equipment and facilities, characterized in that: It includes a flood warning monitoring terminal, a liquid level sensor, an inclination sensor, a rainfall sensor, a camera device, a pole tower and a power supply device; the flood warning monitoring terminal, the liquid level sensor, the inclination sensor, the rainfall sensor, the camera device and the power supply device are respectively installed on the pole tower; the flood warning monitoring terminal is respectively connected to the liquid level sensor, the inclination sensor, the rainfall sensor and the camera device, so as to collect and pre-process the liquid level, inclination, rainfall and image of the area where the power equipment facilities are located through each sensor; the flood warning monitoring terminal is connected to an external central data center through a communication network to upload the pre-processed monitoring data; the power supply device is connected to the flood warning monitoring terminal to provide power for operation.

2. The distributed sensing device for flood disaster status of electric power equipment and facilities according to claim 1, characterized in that: The flood warning monitoring terminal is arranged on a main control board, and the main control board is provided with a main control CPU, a protocol conversion MCU, a KNX protocol converter, a USB to multiple UART modules, an Ethernet interface module, a ZigBee communication module, an HBS communication module, a first RS485 communication module, a dry contact input module, a dry contact output module, an RS232 communication module, a second RS485 communication module, a third RS485 communication module, a TF card, an RTC module and a power supply; the main control CPU is respectively connected to the protocol conversion MCU, the KNX protocol converter, the USB to multiple UART modules, the Ethernet interface module, the first RS485 communication module, the TF card, the RTC module and the power supply. The power source is connected; the power supply is a power management module connected to an external power supply device; the USB to multi-UART module is respectively connected to the RS232 communication module and the third RS485 communication module; the protocol conversion MCU is respectively connected to the ZigBee communication module, the HBS communication module, the second RS485 communication module, the dry contact input module and the dry contact output module; the RS232 communication module is connected to the tilt sensor; the third RS485 communication module is connected to the liquid level sensor; the Ethernet interface module is connected to an external server or a host computer; the second RS485 communication module is connected to the camera device; the HBS communication module is connected to the rain sensor.

3. The distributed sensing device for flood disaster status of electric power equipment and facilities according to claim 2, characterized in that: The main control board and the tilt sensor are integrated in the same protective box.

4. The distributed sensing device for flood disaster status of electric power equipment and facilities according to claim 3, characterized in that: The protection box is vertically installed on the pole tower by using a hoop structure.

5. The distributed sensing device for flood disaster status of electric power equipment and facilities according to claim 1, characterized in that: The liquid level sensor is a pressure type liquid level sensor or a capacitance type liquid level sensor.

6. The distributed sensing device for flood disaster status of electric power equipment and facilities according to claim 5, characterized in that: The pressure formula of the pressure type liquid level sensor facing the liquid surface is: Ρ=ρgh+Po; Where P is the pressure on the liquid surface of the sensor; ρ is the density of the liquid being measured; g is the acceleration of gravity; Po is the atmospheric pressure above the liquid surface; and h is the depth of the sensor immersed in the liquid.

7. The distributed sensing device for flood disaster status of electric power equipment and facilities according to claim 4, characterized in that: The liquid level sensor is located below the protection box and is fixed vertically along the tower, maintaining a distance of 3 to 5 cm from the ground.

8. The distributed sensing device for flood disaster status of electric power equipment and facilities according to claim 7, characterized in that: The liquid level sensor and the connection line between the liquid level sensor and the flood warning monitoring terminal are sheathed in a PVC square tube.

9. The distributed sensing device for flood disaster status of electric power equipment and facilities according to claim 8, characterized in that: The PVC square tube is fully punched with holes.

10. A distributed sensing system for flood disaster status of power equipment and facilities, characterized in that: The invention comprises a central data center and several distributed sensing devices for flood disaster status for power equipment and facilities according to any one of claims 1 to 9; the central data center comprises several application servers and database servers; the flood warning monitoring terminal is connected to the application server via a 4G Internet of Things card, and all data is sent from the flood warning monitoring terminal to the application server to complete data processing, analysis and early warning; The application server is connected to the database server to store data related to the flood disaster status.

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