阅读说明：本技术 一种大坝廊道温湿风在线监测及智能控制系统 (Dam corridor warm and humid air on-line monitoring and intelligent control system ) 是由 汪志林 陈文夫 林鹏 周孟夏 牟荣峰 高向友 李明 宁泽宇 谭尧升 杨宁 刘春风 于 2019-11-08 设计创作，主要内容包括：本发明提供一种大坝廊道温湿风在线监测及智能控制系统,包括数据采集及温湿风控制硬件系统、云平台系统和人机查询与控制界面。该系统可以实时在线监测廊道内小气候变化,包括廊道内温度、湿度和风速,并将采集的数据通过无线网络传输至云端以供查询及决策,通过超声波加湿器、入口封闭预警等手段动态调控廊道内小气候。本系统能及时有效地进行廊道内温湿度风速的动态监控,降低廊道开裂风险,同时减少人力成本。(The invention provides a dam corridor warm and humid air online monitoring and intelligent control system which comprises a data acquisition and warm and humid air control hardware system, a cloud platform system and a man-machine query and control interface. The system can monitor microclimate changes in the corridor in real time on line, including temperature, humidity and wind speed in the corridor, transmits collected data to the cloud end through a wireless network for inquiry and decision making, and dynamically regulates and controls microclimate in the corridor through ultrasonic humidifiers, entrance closed early warning and other means. The system can effectively monitor the temperature, humidity and wind speed in the gallery in time, reduce the cracking risk of the gallery and reduce the labor cost.)

1. The system is characterized by comprising a data acquisition and temperature and humidity wind control hardware system, a cloud platform system and a man-machine query and control interface, wherein all the parts are connected through a wireless or wired network.

2. The dam corridor warm and humid air online monitoring and intelligent control system according to claim 1, wherein the data acquisition and warm and humid air control hardware system is arranged in the corridor and comprises a temperature sensor, a humidity sensor, an air speed sensor, an ultrasonic humidifier, leads and an integrated control cabinet.

3. The dam corridor warm and humid air online monitoring and intelligent control system according to claim 2, wherein the temperature sensor, the humidity sensor and the wind speed sensor are distributed in each area of the corridor in a standing or wall-mounted manner according to needs, and are connected to the integrated control cabinet through leads, so that temperature, humidity and wind speed data in the corridor can be monitored in real time.

4. The dam corridor warm and humid air online monitoring and intelligent control system according to claim 1, wherein one end of the cloud platform system is connected with the integrated control cabinet through a wireless or wired network, and the other end is connected with a human-machine query and control interface platform, so that real-time collection, transmission, storage and data analysis of corridor temperature, humidity and wind speed data are completed, and a multi-field closed-loop control process is executed simultaneously.

5. The dam corridor warm and humid wind online monitoring and intelligent control system according to claim 4, wherein the data analysis takes real-time collected corridor temperature, humidity and wind speed monitoring data at different time and different location as input, and the distribution of temperature field, humidity field and wind speed field in the corridor is generated by building a geometric model of the corridor, embedding existing CFD software based on basic theory of computational fluid dynamics, and executing simulation calculation.

6. The dam corridor warm and humid air online monitoring and intelligent control system according to claim 4, wherein the multi-field closed-loop control process comprises: comparing simulation analysis results of temperature, humidity and wind speed fields in the corridor with a preset target field, and finishing closed-loop control of a single field according to deviation degrees, wherein the basic control means comprises the following steps: the intelligent temperature control of the surrounding pouring bin, the power and the direction of the ultrasonic humidifier push early warning information through a man-machine query and control interface.

7. The dam corridor warm and humid air online monitoring and intelligent control system according to claim 1, wherein the human-machine query and control interface comprises a mobile end and a PC end, including but not limited to a WeChat platform-based application; the human-computer query and control interface is connected with the cloud platform system through a network, so that managers can query monitoring data of temperature, humidity and wind speed all the time on line in real time, and query results can be displayed in forms including but not limited to tables and graphs; meanwhile, the human-computer query and control interface also allows a user to remotely control the working state of the ultrasonic humidifier.

8. The dam corridor warm and humid air online monitoring and intelligent control system according to claim 1, wherein the integrated control cabinet is composed of a cabinet body, a power supply unit, a network unit, a data acquisition unit and a humidifier control unit; the cabinet body is used for accommodating the units; the power supply unit supplies power to the whole hardware system; the network unit can perform data transmission with the cloud platform system through a wireless or wired network; the data acquisition unit can automatically acquire data of the accessed sensor according to a set interval; the humidifier control unit controls the ultrasonic humidifier to regulate and control the humidity in the corridor according to the temperature and humidity monitoring data and the remote manual instruction; the integrated control cabinet can be simultaneously connected with a plurality of sensors and the ultrasonic humidifier.

Technical Field

The invention belongs to the technical field of water conservancy and hydropower, and particularly relates to a dam corridor warm and humid air online monitoring and intelligent control system.

Background

For large hydroelectric junctions, it is important to ensure the dam concrete quality of main buildings. The cracking of the surface or special detail structure of the hydraulic concrete not only affects the appearance and normal operation of the engineering structure, but also affects the long-term safety and durability of the engineering. In the actual process of dam construction and operation, the dam gallery is one of the parts which are easy to crack. The gallery cracks are caused by concrete setting time, stress concentration due to structural constraints or changes, additional stress due to changes in ambient temperature, humidity, and wind speed, and the like. The temperature, humidity and wind speed of the small environment in the gallery directly influence the increase of the strength of the gallery concrete and the action of external load, and are important processes for preventing the gallery concrete from cracking.

The traditional dam corridor microenvironment control method is characterized by comprising the steps of manual regular measurement, manual water spraying maintenance and manual gate watching, and the traditional dam corridor microenvironment control method not only consumes a large amount of manpower and material resources, but also has the defects of discontinuous data acquisition, untimely regulation, non-transparent data and the like.

Disclosure of Invention

In view of the above, the present invention provides an online monitoring and intelligent control system for warm and humid air in a dam corridor, which includes a data acquisition and warm and humid air control hardware system, a cloud platform system, and a human-machine query and control interface. The system can monitor microclimate changes in the corridor in real time on line, including temperature, humidity and wind speed in the corridor, transmits collected data to the cloud end through a wireless network for inquiry and decision making, and dynamically regulates and controls microclimate in the corridor through ultrasonic humidifiers, entrance closed early warning and other means. The system can effectively monitor the temperature, humidity and wind speed in the gallery in time, reduce the cracking risk of the gallery and reduce the labor cost.

In order to achieve the purpose, the invention adopts the following technical scheme:

a dam corridor warm and humid air online monitoring and intelligent control system comprises a data acquisition and warm and humid air control hardware system, a cloud platform system and a man-machine query and control interface, wherein all the parts are connected through a wireless or wired network.

Furthermore, the data acquisition and temperature and humidity control hardware system is arranged in the corridor and comprises a temperature sensor, a humidity sensor, an air speed sensor, an ultrasonic humidifier, a lead and an integrated control cabinet.

Furthermore, the temperature sensor, the humidity sensor and the wind speed sensor are distributed in each area of the corridor as required in a standing mode or a wall-mounted mode, and can be connected into the integrated control cabinet through leads to monitor temperature, humidity and wind speed data in the corridor in real time.

Furthermore, one end of the cloud platform system is connected with the integrated control cabinet through a wireless or wired network, and the other end of the cloud platform system is connected with the human-computer query and control interface platform, so that the real-time collection, transmission, storage and data analysis of the corridor temperature, humidity and wind speed data are completed, and meanwhile, a multi-field closed-loop control process is executed.

Furthermore, the data analysis algorithm takes the real-time collected temperature, humidity and wind speed monitoring data of different positions and different moments of the corridor as input, and the distribution of a temperature field, a humidity field and a wind speed field in the corridor is generated by establishing a geometric model of the corridor, embedding the conventional CFD software based on the basic theory of computational fluid dynamics and executing simulation calculation. The basic calculation formula includes:

(1) heat transfer equation (Fourier's Law):

wherein T is a temperature value; t is a time variable; a is the thermal diffusivity; rho is density; c is the specific heat capacity;

the heating power of the internal heat source is the unit volume of the infinitesimal body.

(2) Humidity diffusion equation (Fick's second law):

wherein h is a relative humidity value; t is a time variable; d (h) is the concrete humidity diffusion coefficient.

(3) Gas equation of motion (Navier-Stokes equalisation):

wherein u is the fluid velocity; p is the fluid pressure; ρ is the fluid density and μ is the hydrodynamic viscosity.

Further, the multi-field closed-loop control process includes: comparing simulation analysis results of temperature, humidity and wind speed fields in the corridor with a preset target field, and finishing closed-loop control of a single field according to deviation degrees, wherein the basic control means comprises the following steps: the intelligent temperature control of the surrounding pouring bin, the power and the direction of the ultrasonic humidifier push early warning information through a man-machine query and control interface.

Further, the human-computer query and control interface comprises a mobile terminal and a PC terminal, including but not limited to an application program based on a WeChat platform; the human-computer query and control interface is connected with the cloud platform system through a network, so that managers can query monitoring data of temperature, humidity and wind speed all the time on line in real time, and query results can be displayed in forms including but not limited to tables and graphs; meanwhile, the man-machine query and control interface also allows a user to remotely control the working state of the humidifier.

Furthermore, the integrated control cabinet consists of a cabinet body, a power supply unit, a network unit, a data acquisition unit and a humidifier control unit; the cabinet body is used for accommodating the units; the power supply unit supplies power to the whole hardware system; the network unit can perform data transmission with the cloud platform system through a wireless or wired network; the data acquisition unit can automatically acquire data of the accessed sensor according to a set interval; the humidifier control unit controls the ultrasonic humidifier to regulate and control the humidity in the corridor according to the temperature and humidity monitoring data and the remote manual instruction; the integrated control cabinet can be simultaneously connected with a plurality of sensors and the ultrasonic humidifier.

The invention has the advantages that:

1. the temperature, humidity and wind speed data in the corridor can be continuously collected in real time, the data are accurate and timely, and the manpower consumption is reduced;

2. monitoring results can be queried online in real time;

3. the preliminary processing of monitoring data can be carried out, and the decision is convenient;

4. the corridor temperature, humidity and wind speed can be intelligently regulated and controlled, and the regulation and control efficiency is improved.

Drawings

FIG. 1 is a schematic diagram of the logical relationship of the components of the present invention;

FIG. 2 is a flow of the cloud platform embedded simulation computation and intelligent regulation algorithm of the present invention;

FIG. 3 is a cloud platform generated multi-farm control strategy library of the present invention;

FIG. 4 is a three-dimensional schematic diagram of the actual layout of the data acquisition and humidity control hardware system of the present invention;

FIG. 5 is a schematic plan view of the actual layout of the data acquisition and humidity control hardware system of the present invention;

FIG. 6 is a human-machine query and control interface of an embodiment of the present invention;

FIG. 7 is a schematic diagram of the results of simulation analysis of the wind velocity field in the corridor according to the embodiment of the present invention.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, belong to the scope of the present invention.

As shown in FIG. 1, the dam corridor warm and humid air online monitoring and intelligent control system comprises a data acquisition and warm and humid air control hardware system, a cloud platform system and a human-computer query and control interface. The data acquisition and temperature and humidity control hardware system is responsible for sensing temperature, humidity and wind speed data in the dam corridor, the cloud platform system finishes acquisition, storage, processing and feedback control of monitoring data on the ultrasonic humidifier, and the human-computer query and control interface can inquire the monitoring data in various forms in real time on line and remotely control the working state of the ultrasonic humidifier to supplement the control function of the cloud platform system. The three subsystems jointly realize real-time online monitoring of the temperature, the humidity and the wind speed of the dam gallery, and form an intelligent humidity control system capable of sensing, analyzing and controlling the gallery humidity in real time.

As shown in fig. 2 and 3, the cloud platform system of the present invention uses real-time collected temperature, humidity, and wind speed monitoring data of different locations and different times of the corridor as input, and embeds the existing CFD software to execute simulation calculation by establishing a geometric model of the corridor based on the basic theory of computational fluid dynamics, to generate the distribution of a temperature field, a humidity field, and a wind speed field in the corridor, and further executes a multi-field closed-loop control process: comparing simulation analysis results of temperature, humidity and wind speed fields in the corridor with a preset target field, and finishing closed-loop control of a single field according to deviation degrees, wherein basic control means include but are not limited to intelligent temperature control of a surrounding pouring bin, power and direction of an ultrasonic humidifier, early warning information pushing through a man-machine query and control interface and the like.

As shown in the figures 4 and 5, the temperature, humidity and wind speed data of each measuring point in the corridor are collected in real time through the temperature sensor, the humidity sensor and the wind speed sensor. In the embodiment, integrated monitoring equipment of humidity, temperature and wind speed is adopted, the integrated monitoring equipment is installed in a standing or wall-mounted mode under the condition that the concrete of the gallery is not damaged, and the integrated monitoring equipment is connected into an integrated control cabinet through a lead. The monitoring devices are typically arranged at corridor intersections or equally spaced. The ultrasonic humidifier is arranged in the corridor and is connected into the integrated control cabinet through a lead. The integrated control cabinet is also positioned in the corridor, has the access capability of a plurality of sensors and the ultrasonic humidifier, preferentially completes communication with the cloud platform system through a wireless network, and can consider adopting optical fibers to communicate at the position with poor signals. The cloud platform system and the human-computer query and control interface are connected through an operator network.

As shown in fig. 4 and 5, in the embodiment, the temperature, humidity and wind speed sensors adopt integrated monitoring equipment 2 and are arranged in the corridor 1 at equal intervals. The ultrasonic humidifier 3 is arranged at the intersection of the galleries to improve the humidifying effect. The integrated monitoring equipment and the ultrasonic humidifiers are arranged in a standing mode, and the ultrasonic humidifiers and the integrated monitoring equipment are connected into the same integrated control cabinet 5 through leads 4.

As shown in FIG. 6, in the embodiment, the human-machine query and control interface is based on the application of WeChat enterprise number, and allows a user to query the monitoring data of temperature, humidity and wind speed of each measuring point of the corridor in real time on line and display the monitoring data in the form of graphs and tables. The man-machine query and control interface provides a function of remotely controlling the working state of the humidifier.

The real-time online acquisition of the temperature, the humidity and the wind speed is realized in a specific mode that the integrated control cabinet automatically acquires sensor data accessed into the integrated control cabinet according to a preset time interval, the data are uploaded to a cloud platform system in real time by utilizing a network unit, and the cloud platform system finishes the storage, the processing and the display of the data.

The single-field closed-loop intelligent control of the temperature, humidity and wind speed field in the corridor is realized by presetting a target field according to the detailed structures of different parts of the corridor, and when the simulation analysis output result has deviation with the preset temperature, humidity and wind speed field, the working state of the ultrasonic humidifier is adjusted through the integrated control cabinet so as to control the corridor humidity of the part to meet the requirement; the temperature difference between the inside and the outside of concrete on the surface of the gallery is reduced by intelligently adjusting the temperature state of a pouring bin around the gallery; when dangerous cross-hall wind appears or the wind speed exceeds a preset target field threshold value, intelligent early warning is started to remind field construction personnel to check and close the corridor entrance in time.

As shown in fig. 7, based on the wind speed monitoring data in the dam corridor at a certain time, the wind speed distribution in the corridor is output by using embedded CFD simulation analysis software, specifically, fds (fire Dynamics simulator). According to the calculation result, the cross wind in a large range appears in the gallery, the wind speed is high, and the wind speed in the gallery is remarkably reduced after 7 wind inlets around the gallery are closed in time through early warning feedback.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.