CN114018360A - Water level monitoring method and water level monitoring system - Google Patents
Water level monitoring method and water level monitoring system Download PDFInfo
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- CN114018360A CN114018360A CN202111311929.2A CN202111311929A CN114018360A CN 114018360 A CN114018360 A CN 114018360A CN 202111311929 A CN202111311929 A CN 202111311929A CN 114018360 A CN114018360 A CN 114018360A
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Abstract
The application provides a water level monitoring method and a water level monitoring system, wherein the method comprises the steps of obtaining a first water level monitoring value and a second water level monitoring value, and calculating a water level difference value, wherein the water level difference value is obtained by subtracting the first water level monitoring value from the second water level monitoring value; if the water level difference is not larger than the threshold value, the alarm module is not triggered; and if the water level difference is larger than the threshold value, triggering an alarm module to send out an alarm prompt. The first water level monitoring value is measured by a first water level sensor, the second water level monitoring value is measured by a second water level sensor, and the first water level sensor is different from the second water level sensor. When the difference value between the two water level sensors is detected to be large, one of the two water level sensors is probably broken down, so that the water level difference value not only meets the requirement of a water level monitoring function, but also can be used as a basis for detecting the state of the sensor, the problems that the water level sensor cannot be found out in time by manpower at present and a water level monitoring method is unreliable are solved, and the water level monitoring accuracy and reliability are improved.
Description
Technical Field
The application relates to the technical field of water level measurement, in particular to a water level monitoring method and a water level monitoring system.
Background
The water level is the most intuitive factor for reflecting the water regime, the change of the water level is mainly caused by the increase and decrease of the water volume of the water body, and the monitoring of the change of the water level is the important work for analyzing the water regime of the region. The change monitoring of the water level can effectively monitor disasters such as water logging, dike breaking and the like, and provide data reference for rivers, lakes, reservoirs, mines and the like.
For example, in an automatic drainage system of a pump room in a mining area, water level monitoring is always one of the most important parameters in mine drainage parameters, and generally, the water level of a water sump in a mine is divided into five levels, namely a low water level, a normal water level, a high water level, an upper limit water level and a dangerous water level. Generally, in mine operation, the water level sensor monitors and feeds back to judge which gear the water level is in, and then executes corresponding control action, so that the accuracy and reliability of the sensor for measuring the water level are particularly remarkable.
However, due to the influence of the field environment, the water level sensor as an electronic element is affected by the environment, and occasionally, temperature drift, error code, data loss and other faults occur, so that the fault of the water level sensor cannot be found in time by manpower, and the equipment is damaged due to continuous operation of the equipment, therefore, the existing water level monitoring method is not reliable, and the improvement of the automation level of a pump room is seriously restricted.
Disclosure of Invention
The application provides a water level monitoring method and a water level monitoring system, solves the problems that the water level sensor cannot be found in time by manpower at present and the water level monitoring method is unreliable, and improves the accuracy and reliability of water level monitoring in pump room automation application.
In a first aspect, the present application provides a water level monitoring method, including:
acquiring a first water level monitoring value and a second water level monitoring value;
calculating a water level difference value, wherein the water level difference value is obtained by subtracting the first water level monitoring value from the second water level monitoring value;
if the water level difference is not larger than the threshold value, the alarm module is not triggered;
and if the water level difference is larger than the threshold value, triggering the alarm module to send out an alarm prompt.
Further, the first water level monitoring value is measured by a first water level sensor.
Further, the second water level monitoring value is measured by a second water level sensor.
Further, the first water level sensor is different from the second water level sensor.
Further, the first water level sensor is an ultrasonic water level sensor.
Further, the second water level sensor is a drop-in water level sensor,
further, the threshold value is 0.2.
In a second aspect, the present application provides a water level monitoring system comprising:
the acquisition module is used for acquiring a first water level monitoring value and a second water level monitoring value;
the calculation module is used for calculating a water level difference value, and the water level difference value is obtained by subtracting the first water level monitoring value from the second water level monitoring value;
a comparison module: if the water level difference is not larger than the threshold value, the alarm module is not triggered;
an alarm module: and sending an alarm prompt if the water level difference is greater than the threshold.
Further, the first water level monitoring value is measured by a first water level sensor, and the second water level monitoring value is measured by a second water level sensor.
Further, the first water level sensor is different from the second water level sensor.
According to the technical scheme, the water level monitoring method and the water level monitoring system are provided, the method comprises the steps of obtaining a first water level monitoring value and a second water level monitoring value, and calculating a water level difference value, wherein the water level difference value is obtained by subtracting the first water level monitoring value from the second water level monitoring value; if the water level difference is not larger than the threshold value, the alarm module is not triggered; and if the water level difference is larger than the threshold value, triggering an alarm module to send out an alarm prompt. The first water level monitoring value is measured by a first water level sensor, the second water level monitoring value is measured by a second water level sensor, and the first water level sensor is different from the second water level sensor. This application uses the water level sensor of two different principles to read data to the water level simultaneously, even two water level sensors all appear the error code also can not be same numerical value, when programmable controller detected the two difference very big, it has a probably trouble to represent two water level sensors, therefore, the difference of first water level monitoring value and second water level monitoring value has not only satisfied the demand of water level monitoring function, can also regard as the foundation that detects the sensor state, the current artifical unable in time discovery water level sensor trouble, the unreliable problem of water level monitoring method has been solved, the accuracy and the reliability of water level monitoring in pump room automation is used have been improved, pump room automation level has been improved.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic flow chart of a water level monitoring method according to an embodiment of the present disclosure;
fig. 2 is a schematic view of a water level monitoring system according to an embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the present application will be described in detail and completely with reference to the following specific embodiments of the present application and the accompanying drawings. It should be apparent that the described embodiments are only some of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application. The technical solutions provided by the embodiments of the present application are described in detail below with reference to the accompanying drawings.
Fig. 1 is a schematic flow chart of a water level monitoring method provided in an embodiment of the present application, and as shown in fig. 1, the water level monitoring method provided in the embodiment of the present application includes the following steps:
s1: and acquiring a first water level monitoring value and a second water level monitoring value.
At present, the water level sensor is monitored and fed back to judge which gear the water level is in, and then corresponding control action is executed, but due to the influence of field environment, the water level sensor is used as an electronic element, and the phenomena of temperature drift, error codes, data loss and the like occasionally occur under the influence of environment, and one water level sensor is not used in a hundred percent failure mode.
The scheme that this application was adopted does, uses the water level sensor of two different principles to read data to the water level simultaneously, even two water level sensors all appear the error code also can not be same numerical value, consequently, has promoted water level monitoring's reliability. Correspondingly, the principle of realizing water level monitoring in the application is that data are read from the water level through two sensors of different types, two groups of data are continuously compared in the programmable controller until the difference value is greater than a threshold value, and then a sensor can be judged to be out of order and a warning is sent out.
The programmable controller is an electronic system with digital operation, and is specially designed for use in industrial environment. It uses programmable memory to store instructions for logical operations and sequence control, timing, counting, arithmetic operations, etc. and controls various types of machinery or manufacturing processes through digital or analog input and output interfaces.
Specifically, the first water level monitor value is measured by a first water level sensor, and the second water level monitor value is measured by a second water level sensor. In practical situations, in order to ensure the minimum or 0 error of the monitored water level, it is preferable that the two water level sensors are disposed on the same horizontal plane, so that the monitored water levels of the two sensors should be the same in principle.
In the embodiment of the present application, in order to avoid the same error code occurring in the two sensors, it is preferable that the first water level sensor is different from the second water level sensor, so that even if one of the sensors has an error code, the other sensor will work normally, and the monitored water level is also the normal water level. For example, the first water level sensor may be an ultrasonic water level sensor, the second water level sensor may be a drop-in water level sensor, and other water level sensors may also be used, and the specific type is not limited in this application.
It should be noted that, when acquiring the water level value information, the water level value may be acquired in real time or in stages, or an acquisition plan may be formulated by combining special situations, and the acquisition plan may be specifically formulated according to actual needs. For example, in an embodiment, if the real-time acquisition mode is adopted, the ultrasonic water level sensor may acquire the first water level monitoring value in real time, and the drop-in water level sensor may acquire the second water level monitoring value in real time.
In another embodiment, a time threshold may be customized, and a water level value may be obtained in a periodic manner according to the time threshold, and if the customized time threshold is 3 seconds, a water level value may be obtained every 3 seconds, that is, a first water level monitoring value is obtained every 3 seconds by the ultrasonic water level sensor, a second water level monitoring value is obtained every 3 seconds by the immersion water level sensor, and the specific threshold is determined according to actual requirements.
In another embodiment, two manners, that is, a real-time obtaining manner and a periodic obtaining manner, may be used in combination, for example, according to a past history record, a water level may be easily abnormal in a certain time period, for this time period, a water level value may be obtained in real time, and the remaining time periods are obtained in a periodic manner, that is, a method combining the two obtaining manners is adopted, which is only an exemplary description of a feasible manner, and the present application is not limited in particular.
S2: and calculating a water level difference value, wherein the water level difference value is obtained by subtracting the first water level monitoring value from the second water level monitoring value.
In the embodiment of the application, the water level monitoring is compared and judged through the programmable controller, and whether the water level is abnormal or not is judged according to the numerical value of the water level difference value. The water level difference value is obtained by subtracting the first water level monitoring value from the second water level monitoring value, in the embodiment of the application, the water level can be the height of the free water surface of the water body higher than the fixed base level, the fixed base level can be specified according to actual requirements, the unit of water level monitoring can be meters or other units, and the application is not limited in particular.
It should be noted that, since the first water level sensor and the second water level sensor monitor the same water level, theoretically, the first water level monitoring value and the second water level monitoring value should be equal or have a small difference. When the programmable controller detects that the difference value between the first water level monitoring value and the second water level monitoring value is large, one of the two water level sensors is likely to have a fault, so that the difference value between the first water level monitoring value and the second water level monitoring value not only meets the requirement of a water level monitoring function, but also can be used as a basis for detecting the state of the sensors.
S3: and if the water level difference is not larger than the threshold value, not triggering the alarm module.
The threshold value can be set in advance according to actual requirements, and the programmable controller compares the water level difference value with the threshold value to be used as a basis for judging whether the sensor is abnormal or not. Monitoring the water level difference can set for certain rule, for example, if the water level difference is not more than the threshold value, it indicates that the states of the first water level sensor and the second water level sensor are normal, if the water level difference is more than the threshold value, it indicates that one or at least one of the first water level sensor and the second water level sensor is abnormal, and then automatic early warning is performed.
S4: and if the water level difference is larger than the threshold value, triggering the alarm module to send out an alarm prompt.
When the abnormal state of the water level sensor is monitored through the water level difference value, the programmable controller automatically triggers the alarm module to send an alarm prompt, so that the problem that the water level sensor cannot be found in time by original workers is solved, and the phenomenon that the equipment is damaged due to continuous operation of the equipment is avoided.
The entire process is now described with reference to FIGS. S1-S4 by way of specific examples. For example, the first water level sensor is an ultrasonic water level sensor, the second water level sensor is an immersion water level sensor, assuming that a first water level monitored by the ultrasonic water level sensor is Z1 and a second water level monitored by the immersion water level sensor is Z2 at a certain time or within a certain time period, the programmable controller calculates a difference between Z1 and Z2, and subtracts the difference to obtain a water level difference, assuming that the threshold is 0.2, the water level difference at the time or within the time period is compared with the threshold 0.2 (in an actual scene, the water level difference is also a variable and should be continuously compared with the threshold), if the water level difference is less than or equal to 0.2, the state of the water level sensor is normal, otherwise, if the water level difference is greater than 0.2, the programmable controller automatically triggers an alarm module to send an alarm prompt, indicating an abnormality in the water level sensor.
The water level monitoring method in the embodiment of the application is suitable for various water level monitoring, and is particularly more important in automatic application, for example, application in pump room automatic application. The method mainly comprises the steps of simultaneously reading data of water levels through two sensors of different types, continuously comparing two groups of data in a programmable controller until a difference value is larger than a threshold value, judging that one sensor has a fault, and giving an alarm.
According to the scheme, the water level monitoring method comprises the steps of obtaining a first water level monitoring value and a second water level monitoring value, and calculating a water level difference value, wherein the water level difference value is obtained by subtracting the first water level monitoring value and the second water level monitoring value; if the water level difference is not larger than the threshold value, the alarm module is not triggered; and if the water level difference is larger than the threshold value, triggering an alarm module to send out an alarm prompt. The first water level monitoring value is measured by a first water level sensor, the second water level monitoring value is measured by a second water level sensor, and the first water level sensor is different from the second water level sensor. This application uses the water level sensor of two different principles to read data to the water level simultaneously, even two water level sensors all appear the error code also can not be same numerical value, when programmable controller detected the two difference very big, it has a probably trouble to represent two water level sensors, therefore, the difference of first water level monitoring value and second water level monitoring value has not only satisfied the demand of water level monitoring function, can also regard as the foundation that detects the sensor state, the current artifical unable in time discovery water level sensor trouble, the unreliable problem of water level monitoring method has been solved, the accuracy and the reliability of water level monitoring in pump room automation is used have been improved, pump room automation level has been improved.
The present application further provides a water level monitoring system, fig. 2 is a schematic diagram of a water level monitoring system provided in the embodiment of the present application, and as shown in fig. 2, the water level monitoring system includes:
the acquisition module is used for acquiring a first water level monitoring value and a second water level monitoring value;
the calculation module is used for calculating a water level difference value, and the water level difference value is obtained by subtracting the first water level monitoring value from the second water level monitoring value;
a comparison module: if the water level difference is not larger than the threshold value, the alarm module is not triggered;
an alarm module: and sending an alarm prompt if the water level difference is greater than the threshold.
Further, the first water level monitor value is measured by a first water level sensor, and the second water level monitor value is measured by a second water level sensor.
Further, the first water level sensor is different from the second water level sensor.
The water level monitoring system in the embodiment of the application mainly reads data of water levels through two sensors of different types at the same time, and two groups of data are continuously compared in the programmable controller until the difference value is larger than a numerical value, so that a sensor can be judged to be in fault and a warning is given out. The problem that the original workers cannot find the fault of the water level sensor in time to cause the continuous operation of equipment and damage the equipment is solved, and the accuracy and the reliability of water level monitoring in the automatic application of the pump room are improved.
Other embodiments of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the invention and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains.
It will be understood that the invention is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the invention is limited only by the appended claims.
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Patent Citations (7)
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| CN102812281A (en) * | 2010-03-11 | 2012-12-05 | 流动科技株式会社 | Method for precisely and reliably controlling liquid level of pressure tank with multiple sensors |
| CN203337216U (en) * | 2013-04-24 | 2013-12-11 | 北京鼎盈视通安全科技有限公司 | Water level monitoring and early warning system |
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Application publication date: 20220208 |