阅读说明：本技术 一种在线监测建筑物渗漏水的传感器、监测系统及其应用 (Sensor for monitoring building water leakage on line, monitoring system and application thereof ) 是由 程学群 李晓刚 于 2021-09-03 设计创作，主要内容包括：本发明实施例公开一种在线监测建筑物渗漏水的传感器、监测系统及其应用,属于建筑物渗水监测技术领域。本发明的传感器,包括阴极和阳极,阴极和阳极之间存在电位差；遇水时,阴极和阳极间诱发电偶腐蚀会产生电化学信号。本发明的在线监测建筑物渗漏水的传感器是基于腐蚀原电池原理,传感器遇水时,产生腐蚀电偶电流信号,再由信号采集器连续接收和记录,将数据无线发送到数据分析中心,从而得到建筑物的渗水高度、渗水时间和渗水位置,实现了建筑物渗水情况的连续实时在线监测及快速预警,能够对渗水地点和时间进行精准定位,提高了防水治理措施效率,为保障人们生产生活环境的舒适性提供了可靠支撑。(The embodiment of the invention discloses a sensor for monitoring water leakage of a building on line, a monitoring system and application thereof, belonging to the technical field of building water leakage monitoring. The sensor comprises a cathode and an anode, wherein a potential difference exists between the cathode and the anode; when water is met, galvanic corrosion is induced between the cathode and the anode to generate an electrochemical signal. The sensor for monitoring the water leakage of the building on line is based on the principle of a corrosion primary battery, generates a corrosion galvanic couple current signal when the sensor meets water, continuously receives and records the signal by the signal collector, and wirelessly transmits data to the data analysis center, so that the water leakage height, the water leakage time and the water leakage position of the building are obtained, the continuous real-time on-line monitoring and the quick early warning of the water leakage condition of the building are realized, the water leakage place and time can be accurately positioned, the efficiency of waterproof treatment measures is improved, and reliable support is provided for guaranteeing the comfort of people in the production living environment.)

1. A sensor for on-line monitoring water leakage of a building is characterized by comprising a cathode and an anode, wherein a potential difference exists between the cathode and the anode; when water is met, electrochemical signals can be generated by inducing galvanic corrosion between the cathode and the anode; the electrochemical signal comprises a corrosion current;

the sensor generates corrosion current with the intensity between 8 muA and 20 muA.

2. The sensor for on-line monitoring water leakage of a building according to claim 1,

the electrode area ratio of the cathode to the anode is 1: 1; the distance between the cathode and the anode is between 2mm and 5 mm.

3. The sensor for on-line monitoring water leakage of a building according to claim 1,

the cathode and the anode are made of a pair of metals, metals and non-metals, metals and compounds with different activities.

4. The sensor for on-line monitoring water leakage of building according to claim 3,

the pair of metals with different activities is zinc and copper, wherein the zinc is used as an anode, and the graphite is used as a cathode;

the metal and nonmetal are zinc and graphite, wherein the zinc is used as an anode and the graphite is used as a cathode;

the metal and the compound are lead and lead dioxide, wherein the lead is used as an anode, and the lead dioxide is used as a cathode.

5. A monitoring system for on-line monitoring of water leakage from a building, comprising at least one sensor and signal collector as claimed in any one of claims 1 to 4;

the signal collector is connected with the sensor and used for collecting an electrochemical signal generated by the sensor and outputting a collection result of the electrochemical signal;

and judging the water seepage situation of the building according to the output result of the signal collector, and realizing the online monitoring of the water seepage of the building.

6. The system for monitoring the water leakage of the building on line according to claim 5,

the output result of the signal collector comprises no output of an electrochemical signal and an output electrochemical signal.

7. The system for monitoring the water leakage of the building on line according to claim 6,

the monitoring system further comprises an alarm system, the alarm system is connected with the signal collector through wireless transmission, receives the output result of the signal collector, judges the water seepage situation of the building according to the output result and gives a corresponding early warning result.

8. The system for monitoring the water leakage of the building on line according to claim 5,

the number of the sensors is 2, and the sensors are divided into upper sensors and lower sensors;

the upper sensor detects the water seepage condition of the top of the seepage layer to be detected;

and the lower sensor detects the water seepage condition at the bottom of the seepage layer to be detected.

9. Use of the monitoring system for on-line monitoring of water leakage from buildings according to any of claims 5 to 8 for monitoring of water leakage from buildings, preferably for monitoring of water leakage from the waterproof floors of buildings.

Technical Field

The invention belongs to the technical field of building water seepage monitoring, and relates to a sensor and a monitoring system for monitoring building water seepage on line and application thereof.

Background

The quality of the waterproof engineering directly influences the service function and the service life of the house building, and the quality of the waterproof engineering is related to whether the life and the production of people can be normally carried out. However, due to the reasons of large difference of regional environments, uneven waterproof construction quality, uneven quality of waterproof materials, large management difficulty and the like, no effective technology is formed for directly evaluating the quality of the building waterproof engineering currently.

At present, some water seepage monitoring devices and methods exist in the market, and the working principle of the devices and methods is mainly to detect whether water seepage occurs in a building or not through conductivity, resistance value change and applied pressure, for example, when water seepage occurs, the resistance value is significantly reduced, and when water seepage does not occur, the resistance value tends to be infinite. Although the above methods are feasible, they have some limitations, firstly, continuous online monitoring cannot be realized, and detailed information of leakage water, such as leakage height and leakage water source, cannot be obtained. Meanwhile, the common monitoring area of the method is limited, and the method can only be used for monitoring the ground, the wall and the like, and the leakage of the pipeline can only be regularly monitored in a pressurization test mode, so that the method cannot be applied to other scenes. Therefore, the existing monitoring means can not realize the leakage water monitoring of the building, is difficult to process the leakage water condition of the building in time, can not reduce the manpower and material resources, and can bring great inconvenience to the life and production activities of people.

Disclosure of Invention

The invention solves the technical problems that the existing monitoring means has limited monitoring area, can only be used for monitoring areas such as ground, wall surfaces and the like, cannot realize the leakage water monitoring of the building and cannot realize continuous online monitoring. The invention provides a sensor for monitoring water leakage of a building on line, a monitoring system and application thereof. The sensor for monitoring the water leakage of the building on line is a water leakage sensor based on the principle of a corrosion primary battery, realizes continuous real-time on-line monitoring and quick early warning of the water leakage condition of the building, can accurately position the water leakage place and time, is not limited by a monitoring area, can monitor the water leakage of the building, improves the efficiency of waterproof treatment measures, and provides reliable support for ensuring the comfort of people in production and living environments.

In order to solve the technical problems, the invention provides the following technical scheme:

one of the purposes of the invention is to provide a sensor for on-line monitoring the water leakage of a building, which comprises a cathode and an anode, wherein a potential difference exists between the cathode and the anode; when water is met, electrochemical signals can be generated by inducing galvanic corrosion between the cathode and the anode; the electrochemical signal comprises a corrosion current;

the sensor generates corrosion current with the intensity between 8 muA and 20 muA.

The sensor of the invention is based on the working principle of a corrosion primary battery: the anode part and the cathode part have a certain potential difference in the electrolyte, so that a certain electrochemical signal is generated through spontaneous reaction.

Preferably, the first and second liquid crystal materials are,

the electrode area ratio of the cathode to the anode is 1: 1; the distance between the cathode and the anode is between 2mm and 5 mm.

Preferably, the first and second liquid crystal materials are,

the cathode and the anode are made of a pair of metals, metals and non-metals, metals and compounds with different activities.

The sensor has no special requirement on the materials of the cathode and the anode, and can generate corrosion current with proper magnitude when meeting water as long as a certain potential difference exists.

Preferably, the first and second liquid crystal materials are,

the pair of metals with different activities is zinc and copper, wherein the zinc is used as an anode, and the graphite is used as a cathode;

the metal and nonmetal are zinc and graphite, wherein the zinc is used as an anode and the graphite is used as a cathode;

the metal and the compound are lead and lead dioxide, wherein the lead is used as an anode, and the lead dioxide is used as a cathode.

The second purpose of the invention is to provide a monitoring system for on-line monitoring the water leakage of the building, which comprises at least one sensor and a signal collector as described in one of the claims 1-4;

the signal collector is connected with the sensor and used for collecting an electrochemical signal generated by the sensor and outputting a collection result of the electrochemical signal;

and judging the water seepage situation of the building according to the output result of the signal collector, and realizing the online monitoring of the water seepage of the building.

Preferably, the first and second liquid crystal materials are,

the output result of the signal collector comprises no output of an electrochemical signal and an output electrochemical signal.

The signal collector can collect electrochemical signals generated by the sensor, wherein the electrochemical signals comprise corrosion current, potential, resistance, noise and the like. The collector sends signals to the data center in a wireless transmission mode, and classifies and preprocesses the data to realize intelligent diagnosis of the water seepage condition of the building.

The data of the signal acquisition unit is automatically updated once every minute, and early warning and reminding can be carried out within two minutes if water seepage occurs.

Preferably, the first and second liquid crystal materials are,

the monitoring system further comprises an alarm system, the alarm system is connected with the signal collector through wireless transmission, receives the output result of the signal collector, judges the water seepage situation of the building according to the output result and gives a corresponding early warning result.

Preferably, the first and second liquid crystal materials are,

the number of the sensors is 2, and the sensors are divided into upper sensors and lower sensors;

the upper sensor detects the water seepage condition of the top of the seepage layer to be detected;

the lower sensor detects the water seepage condition at the bottom of the seepage layer to be detected, and the water seepage source, the water seepage position and the like can be distinguished according to the electrochemical signal generation time of the lower sensor: ,

when the upper sensor and the lower sensor are not contacted with water, galvanic corrosion does not occur, and no electrochemical signal exists between the two electrodes, which indicates that the sensor is in a safe state;

when the water surface touches the lower sensor, galvanic corrosion occurs, the lower sensor outputs an electrochemical signal, which indicates that water seepage occurs at the lower part of the seepage layer to be detected, and the state display is warning;

when water is immersed into the upper sensor, the upper sensor outputs an electrochemical signal to indicate that the upper part of the leakage layer to be detected is subjected to water seepage, and the state shows that the upper sensor is dangerous;

when water flows into the lower sensor from the upper sensor, the upper sensor outputs an electrochemical signal firstly, and the lower sensor outputs an electrochemical signal later, which indicates that accumulated water is firstly generated at the upper part of the leakage layer;

when water is gradually immersed into the upper sensor from the lower sensor, the lower sensor outputs an electrochemical signal firstly, and the electrochemical signal is output after the upper sensor, so that the water gradually leaks from the lower part of the seepage layer to be detected to the upper part of the seepage layer to be detected.

In the invention, the signal collector and the alarm system can be realized by common equipment or systems in the prior art.

The third purpose of the invention is to provide the application of the monitoring system for monitoring the water leakage of the building on line, which is the second purpose of the invention, in the monitoring of the water leakage of the building, preferably in the monitoring of the water leakage of the waterproof layer on the ground of the building.

The technical scheme provided by the embodiment of the invention at least has the following beneficial effects:

the sensor and the signal collector have the advantages of simple structure, convenient operation, small size and light weight, can be directly installed at any position of the ground of a building, and overcome the problem of limited region of the existing detection method. The invention can realize automatic statistics of alarm times in different areas by installing a plurality of sensors so as to judge the water seepage risk, accurately position and maintain at the first time of water seepage, and has convenient use and low cost.

The sensor provided by the invention judges the water seepage condition according to electrochemical signals generated by spontaneous reaction of different electrode materials in a water environment by utilizing the principle of corroding a primary battery, and can judge the water seepage source and the water seepage height according to the signal generation sequence on the sensors at different positions.

The electrochemical signals obtained by the sensor provided by the invention can be wirelessly transmitted to a data center through the signal collector for automatic analysis, the operation is simple, convenient and fast, a plurality of monitoring devices can be automatically installed, the automatic statistics of alarm times in different areas can be realized, the water seepage risk can be pre-judged, and the water seepage position can be discriminated at the first time.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic diagram illustrating the use of the monitoring system for monitoring water leakage of a building on line according to the present invention in water leakage monitoring.

Detailed Description

In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to the accompanying drawings and specific embodiments.

Example 1

The invention provides a sensor for monitoring water leakage of a building on line, which comprises a cathode and an anode, wherein a potential difference exists between the cathode and the anode; when water is met, electrochemical signals can be generated by inducing galvanic corrosion between the cathode and the anode; the electrochemical signal includes a corrosion current.

In order to study the influence of factors such as electrode materials, electrode spacing and the area ratio of two electrodes on output results of the sensors, different types of sensors are designed for tests, comparative examples 1-10 are designed to study the influence of different electrode area ratios, comparative examples 11-20 are designed to study the influence of different electrode distances on output results, and the characteristics of different sensors are shown in table 1.

TABLE 1 screening of sensor electrode parameters

	Anode/cathode	Distance between two poles/mm	Area ratio of two poles
				Example 1	Zinc/copper	5	1
Comparative example 1	Zinc/copper	5	4
				Comparative example 2	Zinc/copper	5	3
Comparative example 3	Zinc/copper	5	2.5
				Comparative example 4	Zinc/copper	5	2
Comparative example 5	Zinc/copper	5	1.5
				Comparative example 6	Zinc/copper	5	2/3
Comparative example 7	Zinc/copper	5	1/2
				Comparative example 8	Zinc/copper	5	2/5
Comparative example 9	Zinc/copper	5	1/3
				Comparative example 10	Zinc/copper	5	1/4
Comparative example 11	Zinc/copper	0.5	1
				Comparative example 12	Zinc/copper	1	1
Comparative example 13	Zinc/copper	2	1
				Comparative example 14	Zinc/copper	3	1
Comparative example 15	Zinc/copper	4	1
				Comparative example 16	Zinc/copper	6	1
Comparative example 17	Zinc/copper	7	1
				Comparative example 18	Zinc/copper	8	1
Comparative example 19	Zinc/copper	9	1
				Comparative example 20	Zinc/copper	10	1

Experiments show that when the anode material is zinc and the cathode material is copper, the corrosion current generated by the two electrodes under the thin liquid film is stabilized at 8 muA, so that the current threshold of the alarm system is also set to be 8 muA in order to improve the sensitivity. When the monitored sensor current exceeds this value, the monitoring system will trigger an alarm, and when the monitored current is below this value, the monitoring system is in a safe state.

Tables 2 and 3 show the galvanic couple current monitoring results under different electrode area ratios and electrode distances when the anode material is zinc and the cathode material is copper, and as can be seen from table 2, when the area ratio of the two electrode materials of the sensor is less than 1, the current density is lower than 8 muA, and the water seepage alarm cannot be identified; when the area ratio exceeds 1, the current is significantly increased to exceed 20 muA, and the loss of the anode material is large at this time, which is not favorable for long-term use of the sensor, so that the area ratio of the cathode material to the anode material of the sensor is recommended to be 1: 1. When the electrode distance is less than 2mm, the defects of high difficulty in sensor preparation, difficulty in current sensitivity control, overlarge current and the like exist; when the distance exceeds 5mm, the current signal generated by the sensor is less than 8 muA, and the water seepage alarm cannot be automatically identified, so that the recommended electrode distance is 2 mm-5 mm. The output current between the zinc and copper electrodes in selected example 1 is combined.

TABLE 2 Corrosion Current values obtained for different electrode area ratio sensors

TABLE 3 Corrosion Current values obtained for sensors of different electrode distances

The invention provides a method for preparing a sensor for monitoring water leakage of a building on line, which comprises the following steps: the zinc and copper electrodes are respectively used as the anode and the cathode of the water seepage sensor, the outer surface is polished to be flat by using metallographic abrasive paper, and then the electrodes are welded and packaged to form the sensor.

Example 2

The invention provides a monitoring system for monitoring water leakage of a building on line, which comprises 2 sensors, an upper sensor and a lower sensor, wherein the sensors are arranged on the upper sensor and the lower sensor; a signal collector and an alarm system;

the signal collector is respectively connected with the upper sensor and the lower sensor and is used for collecting electrochemical signals generated by the upper sensor and the lower sensor and outputting the collection result of the electrochemical signals;

and judging the water seepage situation of the building according to the output result of the signal collector, and realizing the online monitoring of the water seepage of the building.

The output result of the signal collector comprises no output of the electrochemical signal and the output of the electrochemical signal.

The alarm system is connected with the signal collector through wireless transmission, receives the output result of the signal collector, judges the water seepage situation of the building according to the output result and gives a corresponding early warning result.

Example 3

As shown in fig. 1, an application of the monitoring system for monitoring water leakage of a building on line provided in embodiment 2 of the present invention in monitoring water leakage of a waterproof layer of a building is specifically:

the leakage layer to be detected comprises a ground 1 and a waterproof layer 3 at the lower part of the ground, a simulated concrete layer 2 is arranged between the ground 1 and the waterproof layer 3, a signal collector (not shown in the figure), an upper sensor 5 and a lower sensor 4 are vertically arranged in a through hole of the simulated concrete for water seepage detection, wherein the upper sensor 5 is flush with the ground 1 to detect the water seepage condition of the ground 1; the lower sensor 4 is flush with the waterproof layer 3, the water seepage condition of the waterproof layer 3 is detected, the signal collector respectively collects electrochemical signals of the upper sensor 5 and the lower sensor 4 and wirelessly transmits the electrochemical signals to the alarm system 6 for processing, the processing refers to automatically displaying a curve of 'continuously monitored current value' relative to 'time', and automatic monitoring and early warning are carried out according to curve change.

The automatic monitoring and early warning process comprises the following steps:

when the upper sensor 5 and the lower sensor 4 are not contacted with water, galvanic corrosion does not occur, no electrochemical signal exists between the copper and zinc electrodes, and finally the output result in the alarm system is a green curve, which indicates that the alarm system is in a safe state; when the water surface touches the lower sensor 4, the lower sensor 4 generates galvanic corrosion to output an electrochemical signal, and the output result in the alarm system is a yellow curve at the moment, which indicates that the waterproof layer 3 generates water seepage and the state display is warning; when water is immersed in the upper sensor 5, the output result of the alarm system is a red curve, and the state shows that the ground 1 is seeped. When water flows into the bottom from the top, the upper sensor 5 outputs an electrochemical signal firstly, the lower sensor 4 outputs an electrochemical signal, and the signal in the alarm system directly jumps from green to red, which indicates that water is accumulated firstly on the ground 1; when water is gradually immersed from the bottom to the top, the lower sensor 4 outputs an electrochemical signal firstly, the upper sensor 5 outputs an electrochemical signal later, and the signals in the alarm system are sequentially changed from green, yellow and red, which indicates that the water gradually seeps from the waterproof layer 3 to the ground.

In conclusion, the sensor provided by the invention judges the water seepage situation according to electrochemical signals generated by spontaneous reactions of different electrode materials in a water environment by utilizing the principle of corroding a primary battery, and can judge the water seepage position, the water seepage height and the water seepage time according to the signal generation sequence on the sensors at different positions.

Based on the monitoring process, the wireless monitoring and statistics of water seepage risks, water seepage sources and alarm times in different areas can be realized by installing a plurality of sensors and matching devices thereof in any positions of the building, and the sensors are accurately positioned at the first time of water seepage so as to be convenient for maintenance.

While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.