CN112113633B - Automatic alarm method, system and equipment for online liquid level monitoring - Google Patents
Automatic alarm method, system and equipment for online liquid level monitoring Download PDFInfo
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- 238000004891 communication Methods 0.000 claims abstract description 157
- 238000005516 engineering process Methods 0.000 claims description 7
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- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/14—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measurement of pressure
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Abstract
The application discloses an automatic alarm method, a system and equipment for on-line liquid level monitoring, wherein the method comprises the following steps: s1: reading a plurality of preset acquisition periods, communication periods, liquid level parameters and alarm return difference parameters; s2: acquiring an acquisition liquid level D, comparing the acquisition liquid level D with the liquid level parameter, and automatically adjusting an acquisition period and a communication period by using a comparison result based on a preset period adjustment strategy; s3: according to the acquired multiple continuous acquired liquid levels D, a liquid level movement trend and a fluctuation range of the acquired liquid levels D are obtained; comparing the fluctuation range of the collected liquid level D with each alarm return difference parameter to obtain the liquid level state of the fluctuation range of the current collected liquid level D; and sending alarm information according to the liquid level state and the adjusted communication period based on a preset liquid level alarm strategy. The application not only can send alarm information in time and reduce manual duty, but also can effectively save battery power and improve the service cycle of the monitoring equipment.
Description
Technical Field
The application relates to a liquid level detection technology, in particular to an automatic alarm method, an automatic alarm system and automatic alarm equipment for online liquid level monitoring.
Background
The liquid level monitoring equipment is mainly used for carrying out liquid level monitoring on the scenes such as rivers, lakes, reservoirs, urban drainage pipelines, inspection shafts and the like, and particularly the liquid level monitoring equipment installed in the inspection shafts can not provide power through commercial power or solar energy due to special installation environment and can only be powered by batteries.
In order to save battery power and ensure that the equipment can run for a long time, the working mode of liquid level monitoring is mostly changed from real-time acquisition monitoring to periodic working, namely, a fixed period is preset, liquid level is sent once every acquisition period and every communication period.
In the traditional online monitoring, the collected liquid level is sent to a server database in a wireless communication mode such as 2G/3G/4G, NBIoT, the liquid level is compared and analyzed at the database end, the liquid level alarm information state is judged, and a sending instruction is sent to modify the working period of the equipment. However, because the on-line monitoring device is generally powered by a battery, the liquid level sending has a fixed communication period, and the device cannot automatically adjust the working period according to the liquid level in time and cannot process the liquid level alarm information in time.
When the liquid level changes, the generated alarm information state changes, the equipment still needs to wait for a fixed communication period to upload the alarm information to the database end, and needs to manually watch on the database to operate to change the working period of the equipment, and the modified working period can be issued to the equipment when the equipment communicates next time, so that the delay for processing the alarm information is larger, and other accidents such as overflow and the like occur or the battery power is continuously wasted. In addition, when the liquid level fluctuates up and down at the set alarm liquid level, the on-line monitoring equipment frequently uploads alarm information again.
Disclosure of Invention
The embodiment of the application solves the problems that the continuous battery power is wasted, the liquid level change state information is not sent timely and the alarm information state is frequently changed during liquid level detection in the prior art by providing the automatic alarm method, the system and the equipment for on-line liquid level monitoring, realizes automatic adjustment of the working period according to the collected liquid level information, reduces the battery power waste and sends the alarm information state timely.
In a first aspect of the present application, an embodiment of the present application provides an online liquid level monitoring automatic alarm method, the method including:
s1: reading a plurality of preset acquisition periods, communication periods, liquid level parameters and alarm return difference parameters;
s2: acquiring an acquisition liquid level D, comparing the acquisition liquid level D with the liquid level parameter, and acquiring a comparison result; based on a preset period adjustment strategy, automatically adjusting the acquisition period and the communication period by using a comparison result;
s3: according to the acquired multiple continuous acquired liquid levels D, a liquid level movement trend and a fluctuation range of the acquired liquid levels D are obtained; comparing the fluctuation range of the collected liquid level D with each alarm return difference parameter to obtain a comparison result, and obtaining the liquid level state of the fluctuation range of the current collected liquid level D; and sending alarm information according to the liquid level state and the adjusted communication period based on a preset liquid level alarm strategy.
Further, the liquid level parameters comprise a warning liquid level line L1 and a safety liquid level line L2; and dividing the liquid level state into a safe liquid level state, a warning liquid level state and a dangerous liquid level state from bottom to top by utilizing the warning liquid level line L1 and the safe liquid level line L2.
Further, the collection period comprises a safe liquid level collection period TC1, a warning liquid level collection period TC2 and a dangerous liquid level collection period TC3; the communication period comprises a safety liquid level communication period TS1, a warning liquid level communication period TS2 and a dangerous liquid level communication period TS3;
the safety liquid level communication period TS1> the warning liquid level communication period TS2> the dangerous liquid level communication period TS3, and the safety liquid level acquisition period TC1> the warning liquid level acquisition period TC2> the dangerous liquid level acquisition period TC3. Further, the step S2 includes:
acquiring an acquisition liquid level D, respectively comparing the acquisition liquid level D with the warning liquid level line L1 and the safety liquid level line L2 to obtain a liquid level state, and adjusting an acquisition period and a communication period according to the liquid level state,
when D < L2, judging that the liquid level enters a safe liquid level state, changing the liquid level acquisition period into a safe liquid level acquisition period TC1, and changing the data communication period into a warning liquid level communication period TS1;
when L2< D < L1, judging that the liquid level enters an alert liquid level state, changing the liquid level acquisition period into an alert liquid level acquisition period TC2, and changing the data communication period into an alert liquid level communication period TS2;
when D > L1, judging that the liquid level enters a dangerous liquid level state, changing the liquid level acquisition period into a dangerous liquid level acquisition period TC3, and changing the data communication period into a dangerous liquid level communication period TS3.
Further, the alarm return difference parameters of the warning liquid level line L1 comprise: dangerous return difference upper limit value L1a and dangerous return difference lower limit value L1b; the alarm return difference parameters of the safety liquid level line L2 comprise: an upper warning return difference limit value L2a and a lower warning return difference limit value L2b; wherein, L2b < L2a < L1b < L1a < L0, L0 is overflow liquid level line.
Further, the step S3 includes:
s31: acquiring a plurality of continuous acquisition liquid levels D according to the adjusted acquisition period;
s32: according to a plurality of continuous collected liquid levels D, a liquid level movement trend and a fluctuation range of the collected liquid levels D are obtained;
s33: comparing and analyzing the fluctuation range of the collected liquid level D with each alarm return difference parameter to obtain the liquid level state of the fluctuation range of the current collected liquid level D;
when the liquid level is in an ascending trend, comparing and analyzing the fluctuation range of the collected liquid level D with a dangerous return difference lower limit value L1b and a warning return difference lower limit value L2b respectively;
when the fluctuation range of the collected liquid level D is larger than L2b, judging that the liquid level is kept in a warning liquid level state, and marking L2 b-L1 as a warning liquid level interval; when the fluctuation range < L2b of the liquid level D is collected, judging that the liquid level is in a disarmed liquid level state, and when the liquid level D is more than L2, judging that the liquid level is in a armed liquid level state again;
when the fluctuation range of the collected liquid level D is larger than L1b, judging that the liquid level is in a dangerous liquid level state, and marking L1 b-L0 as a dangerous liquid level interval; when the fluctuation range < L1b of the liquid level D is collected, judging that the liquid level enters a warning liquid level state, and when the liquid level D is collected and is more than L1, judging that the liquid level enters a dangerous liquid level state again;
when the liquid level is in a descending trend, comparing and analyzing the fluctuation range of the collected liquid level D with a dangerous return difference upper limit value L1a and a warning return difference upper limit value L2a respectively;
when the fluctuation range of the collected liquid level D is smaller than L1a, judging that the liquid level is kept in a warning liquid level state, and marking L1 a-L0 as a dangerous liquid level interval; when the fluctuation range of the liquid level D is larger than L1a, judging that the liquid level enters a dangerous liquid level state again;
when the fluctuation range of the collected liquid level D is smaller than L2a, judging that the liquid level is kept in a safe liquid level state, and marking the L2 a-L1 as a warning liquid level interval; and when the fluctuation range of the liquid level D is larger than L2a, judging that the liquid level enters the warning liquid level state again.
In a second aspect of the present application, an embodiment of the present application provides an on-line liquid level monitoring automatic alarm system, which adopts the on-line liquid level monitoring automatic alarm method as in the first aspect, where the system includes a monitoring end, a cloud server, and a plurality of liquid level alarm devices; the cloud server is respectively connected with the monitoring end and the liquid level alarm equipment through signals;
the monitoring end is configured to access the cloud server to set or modify a plurality of acquisition periods, communication periods, liquid level parameters and alarm return difference parameters of the liquid level alarm devices, and monitor the current liquid level state monitored by the liquid level alarm devices and the sent alarm information;
the cloud server is configured to receive a plurality of acquisition periods, communication periods, liquid level parameters and alarm return difference parameters of the liquid level alarm devices and transmit the liquid level parameters and the alarm return difference parameters to the liquid level alarm devices; receiving the liquid level state and alarm information of each liquid level alarm device;
the liquid level alarm equipment is configured to collect liquid level D, execute a period adjustment strategy to adjust the collection period and the communication period according to a plurality of preset collection periods, communication periods, liquid level parameters and alarm return difference parameters thereof, execute a liquid level alarm strategy to adjust alarm information, and send alarm information to the cloud server according to the communication periods.
Further, the liquid level alarm device is in signal connection with the cloud server by adopting a 3G/4G wireless communication technology.
In a third aspect of the present application, an embodiment of the present application provides an on-line automatic liquid level monitoring alarm apparatus, which adopts the on-line automatic liquid level monitoring alarm method as in the first aspect, including: the device comprises a shell, a liquid level sensor and a main control board;
the shell is configured to be a waterproof sealing structure;
the liquid level sensor is arranged outside the shell, is electrically connected with the main control board by adopting a waterproof cable, is arranged at the bottom of the tested target liquid when monitoring is performed, and is used for collecting an electric signal generated by the pressure of the liquid bottom according to the collection period and transmitting the electric signal to the main control board; wherein the liquid bottom pressure varies with the liquid level;
the main control board is configured to be arranged in the shell and used for receiving the electric signals acquired by the liquid level sensor, executing a period adjustment strategy to adjust the acquisition period and the communication period after the electric signals are converted into acquired liquid level D, executing a liquid level alarm strategy and transmitting alarm information according to the communication period.
Further, the main control board at least comprises a liquid level acquisition processor arranged on the main control board and is configured to be electrically connected with the liquid level sensor and used for receiving an electric signal and converting the electric signal into an acquired liquid level D; and receiving an acquisition instruction, and controlling the acquisition work of the liquid level sensor according to the acquisition instruction.
Further, the main control board also comprises a CPU and a parameter memory which are arranged on the main control board; the CPU is respectively and electrically connected with the parameter memory and the liquid level acquisition processor;
the parameter storage is configured to store a plurality of acquisition periods, communication periods, liquid level parameters and alarm return difference parameters thereof;
the CPU is used for reading the collected liquid level D, the collection period, the communication period, the liquid level parameter and the alarm return difference parameter; when the periodic adjustment strategy is executed, comparing and analyzing the current collected liquid level D with the liquid level parameter to obtain a comparison result; based on a preset period adjustment strategy, automatically adjusting an acquisition period and a communication period by using a comparison result, so as to send an acquisition instruction to the liquid level signal processor according to the adjusted acquisition period; when the liquid level alarm strategy is executed, according to a plurality of acquired continuous acquired liquid levels D, a liquid level movement trend and a fluctuation range of the acquired liquid levels D are obtained; comparing the fluctuation range of the collected liquid level D with each alarm return difference parameter to obtain a comparison result, and obtaining the liquid level state of the fluctuation range of the current collected liquid level D; and sending alarm information according to the liquid level state and the adjusted communication period based on a preset liquid level alarm strategy.
Further, the main control board also comprises a wireless communicator arranged on the main control board and configured to receive the alarm information, and the alarm information is transmitted out by using a 3G/4G wireless communication technology.
Further, the wireless communicator further comprises a 3G/4G antenna which is configured to be electrically connected with the wireless communicator by adopting a watertight cable and used for communication gain of the wireless communicator.
Further, a data memory is further installed on the main control board and is configured to be electrically connected with the CPU, so as to store liquid level data including collected liquid level D, collected time, collected period, liquid level state, liquid level movement trend, communication period and alarm information.
Further, the liquid level sensor further comprises a power supply device which is configured to be electrically connected with the main control board and is used for supplying power to the main control board and the liquid level sensor.
Further, a power manager is further installed on the main control board, and is configured to be electrically connected with the CPU, the power device, the liquid level sensor and the parameter memory, so as to control the power device to supply power according to the acquisition period and the communication period.
The automatic alarm method, system and equipment for online liquid level monitoring provided by the embodiment of the application have at least the following technical effects:
1. because the alarm return difference parameter is adopted, the state of the alarm information is judged not to be according to a liquid level value but to be a return difference interval, the alarm return difference parameter is remotely set, and can be remotely modified according to actual conditions, so that the frequent change of the state of the alarm information caused by the fluctuation of the liquid level up and down near a safe liquid level line or a warning liquid level line is avoided.
2. Because the safety liquid level communication period TS1> the warning liquid level communication period TS2> the dangerous liquid level communication period TS3 and the safety liquid level collection period TC1> the warning liquid level collection period TC2> the dangerous liquid level collection period TC3 are set at the same time. The larger the acquired liquid level D value is, the more dangerous the acquired liquid level D value is, the smaller the acquisition period and the communication period are, and the liquid level information can be timely sent to the server database. According to the collected liquid level information, the working period is automatically adjusted to timely send an alarm information state, manual duty is reduced, battery electric quantity can be effectively saved, and the service period of monitoring equipment is prolonged. .
Drawings
FIG. 1 is a flow chart of an automatic alarm method for on-line liquid level monitoring in accordance with a first embodiment of the present application;
FIG. 2 is a schematic diagram of a liquid level line and a liquid level state interval according to an embodiment of the present application;
FIG. 3 is a schematic diagram of a warning return difference in a first embodiment of the present application;
FIG. 4 is a schematic diagram showing updating of the acquisition period and the communication period according to the first embodiment of the present application;
FIG. 5 is a schematic diagram showing a liquid level state interval when the liquid level rises in the first embodiment of the application;
FIG. 6 is a schematic diagram showing a liquid level state interval when the liquid level is lowered in the first embodiment of the present application;
FIG. 7 is a network configuration diagram of an on-line automatic level monitoring alarm system in a second embodiment of the present application;
FIG. 8 is a block diagram of an on-line automatic level monitoring alarm device in accordance with a third embodiment of the present application;
FIG. 9 is a block diagram of an on-line automatic level monitoring alarm device in accordance with a third embodiment of the present application;
fig. 10 is a block diagram of a main control board according to a third embodiment of the present application.
Detailed Description
In order to better understand the above technical solutions, the following detailed description will refer to the accompanying drawings and specific embodiments.
Example 1
Referring to fig. 1, the embodiment of the application provides an automatic alarm method for on-line liquid level monitoring, which is used for liquid level monitoring and alarm of scenes such as rivers, lakes, reservoirs, urban drainage pipelines, inspection wells and the like. The method comprises the following steps.
Step S1: and reading a plurality of preset acquisition periods, communication periods, liquid level parameters and alarm return difference parameters.
Referring to fig. 2, the liquid level parameters in the step S1 include a warning liquid level line L1 and a safety liquid level line L2; wherein L2< L1< L0. The liquid level state is divided into a safe liquid level state, a warning liquid level state and a dangerous liquid level state from bottom to top by utilizing the warning liquid level line L1 and the safe liquid level line L2.
Referring to fig. 3, the alarm return difference parameters of the warning level line L1 include: dangerous return difference upper limit value L1a and dangerous return difference lower limit value L1b; the alarm return difference parameters of the safety liquid level line L2 comprise: an upper warning return difference limit value L2a and a lower warning return difference limit value L2b; wherein, L2b < L2a < L1b < L1a < L0, L0 is overflow liquid level line.
Presetting a plurality of parameter values so that L2b < L2< L2a < L1b < L1a < L0, for example, warning level line L1=2.0 meters and safety level line L2=1.0 meters; the dangerous return difference upper limit value l1a=2.1 meters, the dangerous return difference lower limit value l1b=1.9 meters, the warning return difference upper limit value l2a=1.1 meters, and the warning return difference lower limit value l2b=0.9 meters. The collection period comprises a safe liquid level collection period TC1, a warning liquid level collection period TC2 and a dangerous liquid level collection period TC3; the communication period comprises a safety liquid level communication period TS1, a warning liquid level communication period TS2 and a dangerous liquid level communication period TS3; the safety liquid level communication period TS1> the warning liquid level communication period TS2> the dangerous liquid level communication period TS3, and the safety liquid level acquisition period TC1> the warning liquid level acquisition period TC2> the dangerous liquid level acquisition period TC3. For example, a safe liquid level collection period tc1=10 minutes, a safe liquid level communication period ts1=60 minutes, a warning liquid level collection period tc2=5 minutes, a warning liquid level communication period ts2=30 minutes, a dangerous liquid level collection period tc3=2 minutes, and a dangerous liquid level communication period ts3=2 minutes are preset. Namely, the requirements of period parameter setting are met, the safety liquid level communication period is 60 minutes > the warning liquid level communication period is 30 minutes > the dangerous liquid level communication period is 2 minutes, the safety liquid level acquisition period is 10 minutes > the warning liquid level acquisition period is 5 minutes > the dangerous liquid level acquisition period is 2 minutes.
Step S2: acquiring an acquired liquid level D, and comparing the acquired liquid level D with a liquid level parameter to acquire a comparison result; based on a preset period adjustment strategy, the acquisition period and the communication period are automatically adjusted by using the comparison result.
The method comprises the steps of presetting a plurality of acquisition periods and communication periods, and adjusting the acquisition periods and the communication periods through different liquid level states, so that the problem that when one period is fixed all the time, communication is frequently acquired in a safe liquid level state, electric energy is wasted, and alarm processing cannot be performed in time in a dangerous liquid level state is avoided.
The step S2 further includes:
referring to fig. 4, an acquisition liquid level D is acquired, the acquisition liquid level D is compared with a warning liquid level line L1 and a safety liquid level line L2 respectively to obtain a liquid level state, an acquisition period and a communication period are adjusted according to the liquid level state, and the acquisition liquid level D is compared with the warning liquid level line L1 and the safety liquid level line L2 for analysis as follows:
when D < L2, judging that the liquid level enters a safe liquid level state, changing the liquid level acquisition period into a safe liquid level acquisition period TC1, and changing the data communication period into a warning liquid level communication period TS1.
When L2< D < L1, judging that the liquid level enters an alert liquid level state, changing the liquid level acquisition period into an alert liquid level acquisition period TC2, and changing the data communication period into an alert liquid level communication period TS2.
When D > L1, judging that the liquid level enters a dangerous liquid level state, changing the liquid level acquisition period into a dangerous liquid level acquisition period TC3, and changing the data communication period into a dangerous liquid level communication period TS3.
When the collection level d=l0, overflow or flooding will occur when the level D exceeds the overflow level line.
Step S3: according to the acquired multiple continuous acquired liquid levels D, a liquid level movement trend and a fluctuation range of the acquired liquid levels D are obtained; comparing the fluctuation range of the collected liquid level D with each alarm return difference parameter to obtain a comparison result, and obtaining the liquid level state of the fluctuation range of the current collected liquid level D; based on a preset liquid level alarm strategy, alarm information is sent according to the liquid level state and the adjusted communication period.
In the step, a sending alarm condition is set, and alarm information is sent according to a communication period.
This step S3 may include the following steps.
S31: acquiring a plurality of continuous acquisition liquid levels D according to the adjusted acquisition period;
s32: according to a plurality of continuous collected liquid levels D, a liquid level movement trend and a fluctuation range of the collected liquid levels D are obtained;
s33: and comparing and analyzing the fluctuation range of the collected liquid level D with each alarm return difference parameter to obtain the liquid level state of the fluctuation range of the current collected liquid level D.
Referring to fig. 5, when the liquid level is in an ascending trend, comparing and analyzing the fluctuation range of the collected liquid level D with a dangerous return difference lower limit value L1b and an alert return difference lower limit value L2b respectively; in the step, when the liquid level is in an ascending trend, according to the liquid level data, the communication period is shortened and the communication frequency is increased when the liquid level is ascending.
When D < L2 is determined in advance, the liquid level is determined to enter a warning liquid level state, the liquid level acquisition period is changed into a warning liquid level acquisition period TC2, and the data communication period is changed into a warning liquid level communication period TS2.
When the fluctuation range of the collected liquid level D is greater than L2b, judging that the liquid level is kept in a warning liquid level state, and marking L2 b-L1 as a warning liquid level interval; when the fluctuation range < L2b of the liquid level D is collected, the liquid level disarmed liquid level state is judged, and when the liquid level D is collected and is more than L2, the liquid level is judged to enter the armed liquid level state again, so that the frequent change of the alarm information state is effectively avoided.
When D > L1 is determined in advance, the liquid level is determined to enter a dangerous liquid level state, the liquid level acquisition period is changed into a dangerous liquid level acquisition period TC3, and the data communication period is changed into a dangerous liquid level communication period TS3.
When the fluctuation range of the collected liquid level D is larger than L1b, judging that the liquid level is in a dangerous liquid level state, and marking L1 b-L0 as a dangerous liquid level interval; when the fluctuation range < L1b of the liquid level D is collected, the liquid level is judged to enter a warning liquid level state, and when the liquid level D is collected to be more than L1, the liquid level is judged to enter a dangerous liquid level state again, so that the frequent change of the alarm information state is effectively avoided.
Referring to fig. 6, when the liquid level is in a descending trend, comparing and analyzing the fluctuation range of the collected liquid level D with the dangerous return upper limit value L1a and the warning return upper limit value L2a respectively;
in the step, the liquid level is in a descending trend, the communication period is prolonged, and the communication frequency is reduced, so that the battery consumption is reduced. When D < L1 is determined in advance, the liquid level is determined to enter a warning liquid level state, the liquid level acquisition period is changed into a warning liquid level acquisition period TC2, and the data communication period is changed into a warning liquid level communication period TS2.
When the fluctuation range of the collected liquid level D is smaller than L1a, judging that the liquid level is kept in a warning liquid level state, and marking L1 a-L0 as a dangerous liquid level interval; when the fluctuation range of the liquid level D is larger than L1a, judging that the liquid level enters a dangerous liquid level state again, and effectively avoiding frequent change of the alarm information state;
when the fluctuation range of the collected liquid level D is smaller than L2a, judging that the liquid level is kept in a safe liquid level state, and marking the L2 a-L1 as a warning liquid level interval; and when the fluctuation range of the liquid level D is larger than L2a, the liquid level is judged to enter the warning liquid level state again, so that the frequent change of the warning information state is effectively avoided.
In the embodiment, the alarm sending frequency is optimized by avoiding frequent change of the alarm information state, manual duty is reduced, the battery electric quantity can be effectively saved, and the service cycle of the monitoring equipment is prolonged.
For example, it is explained that preset parameters are read, the warning level line l1=2.0 meters and the safety level line l2=1.0 meters; the dangerous return difference upper limit value l1a=2.1 meters, the dangerous return difference lower limit value l1b=1.9 meters, the warning return difference upper limit value l2a=1.1 meters, and the warning return difference lower limit value l2b=0.9 meters; safety liquid level collection period tc1=10 minutes, safety liquid level communication period ts1=60 minutes, warning liquid level collection period tc2=5 minutes, warning liquid level communication period ts2=30 minutes, dangerous liquid level collection period tc3=2 minutes, dangerous liquid level communication period ts3=2 minutes
When the liquid level is in an ascending trend, if the collected liquid level D=0.8 meter and D < L2 are in a safe liquid level state, the system modifies the liquid level collection period TC 1=10 minutes and the liquid level communication period TS 1=60 minutes; if the collected liquid level D=1.2 meters, the liquid level L1a < D < L2a is in an alert liquid level state at the moment, the collecting period and the communication period are automatically adjusted, the liquid level collecting period TC1=5 minutes and the liquid level communication period TS 1=30 minutes, and the liquid level collecting frequency and the communication frequency are 2 times that of the safety liquid level state at the moment; if the collected liquid level d=2.5 meters, D < L1 is in dangerous liquid level state at this time, the collecting period and the communication period are automatically adjusted, the liquid level collecting period tc1=2 minutes, the liquid level communication period ts1=2 minutes, the liquid level collecting frequency is 5 times of that in safe liquid level state, the communication frequency is 30 times of that in safe liquid level state, and the alarm information can be effectively sent in time.
When the liquid level drops, if the collected liquid level D=2.4 meters and D < L1 is in a dangerous liquid level state at the moment, automatically adjusting the collection period and the communication period, wherein the liquid level collection period is TC 1=2 minutes, and the liquid level communication period is TS 1=2 minutes; if the collected liquid level D=1.6 meters and the L1a < D < L2a is in the warning liquid level state at the moment, the collecting period and the communication period are automatically adjusted, the liquid level collecting period TC1=5 minutes and the liquid level communication period TS 1=30 minutes, and the liquid level collecting period and the communication period are larger than those in the dangerous liquid level state at the moment; if the collected liquid level D=0.6 meter and D < L2 is in a safe liquid level state, the collecting period and the communication period are automatically adjusted, the liquid level collecting period TC1=10 minutes and the liquid level communication period TS 1=60 minutes; at this time, the liquid level acquisition frequency is 1/5 of the dangerous liquid level state, and the communication frequency is 1/30 of the dangerous liquid level state, so that the battery power is saved.
Example two
Referring to fig. 7, an embodiment of the present application provides an on-line automatic liquid level monitoring alarm system, which adopts the on-line automatic liquid level monitoring alarm method as in the first embodiment, and includes a monitoring end 300, a cloud server 200, and a plurality of liquid level alarm devices 100; the cloud server 200 is respectively connected with the monitoring end 300 and the liquid level alarm device 100 in a signal mode.
The monitoring end 300 is configured to access the cloud server to set or modify a plurality of acquisition periods, communication periods, liquid level parameters and alarm return difference parameters of each liquid level alarm device, and monitor the monitored current liquid level state and sent alarm information of each liquid level alarm device. The monitoring terminal 300 in this embodiment may be a mobile phone terminal, a PC, a tablet, a notebook, or other terminal devices.
The cloud server 200 is configured to receive a plurality of acquisition periods, communication periods, liquid level parameters and alarm return difference parameters of each liquid level alarm device, and transmit the liquid level parameters and the alarm return difference parameters to each liquid level alarm device; and receiving the liquid level state and alarm information of each liquid level alarm device.
The liquid level alarm device 100 is configured to collect the liquid level D, execute a period adjustment policy to adjust the collection period and the communication period according to a plurality of preset collection periods, communication periods, liquid level parameters and alarm return difference parameters thereof, execute a liquid level alarm policy to adjust alarm information, and send alarm information to the cloud server according to the communication period.
Further, the liquid level alarm device 100 is configured to receive a plurality of preset acquisition periods, communication periods, liquid level parameters and alarm return difference parameters thereof; acquiring an acquired liquid level D, comparing the acquired liquid level D with liquid level parameters, and automatically adjusting an acquisition period and a communication period by using a comparison result based on a preset period adjustment strategy; according to the acquired multiple continuous acquired liquid levels D, a liquid level movement trend and a fluctuation range of the acquired liquid levels D are obtained; comparing the fluctuation range of the collected liquid level D with each alarm return difference parameter to obtain the liquid level state of the fluctuation range of the current collected liquid level D; based on a preset liquid level alarm strategy, alarm information is sent to the cloud server 200 according to the liquid level state and the adjusted communication period.
The liquid level alarm device 100 in this embodiment is in signal connection with the cloud server 200 using a 3G/4G wireless communication technology.
Example III
The embodiment of the application provides an on-line liquid level monitoring automatic alarm device, which adopts the on-line liquid level monitoring automatic alarm method in the first embodiment, and comprises the following working processes:
reading various parameters; when the acquisition period is reached, liquid level acquisition is carried out and the liquid level is stored; then comparing the liquid level data with historical data, warning liquid level line parameters and dangerous liquid level line parameters, judging the liquid level state, the liquid level movement trend and alarm information, and timely modifying parameters such as a storage acquisition period, a data communication period and the like; when the communication period is reached, reading liquid level data, carrying out data communication, sending out the liquid level data and alarm information through a wireless 3G/4G module, receiving various parameters set remotely, and storing;
referring to fig. 8-10, comprising: the device comprises a shell 130, a liquid level sensor 120 and a main control board 110.
And a housing 130 configured as a waterproof sealing structure. In order to adapt to the underwater environment, the housing 130 in this embodiment adopts a waterproof sealing design from structure to material, and based on this, the embodiment is not limited to what structure or what material is adopted, and only needs to realize waterproof sealing. Further, the housing 130 includes an upper housing and a lower housing, the upper housing is covered on the lower housing, corresponding components in the housing are convenient to replace through a covering design, and a mounting bracket is arranged on the lower housing, and the carrying device is moved through the mounting bracket.
The liquid level sensor 120 is configured to be arranged outside the shell 130, is electrically connected with the main control board by adopting a waterproof cable, and is arranged at the bottom of the detected target liquid when monitoring is performed, and is used for collecting an electric signal generated by the pressure of the liquid bottom according to the collection period and transmitting the electric signal to the main control board; wherein the liquid bottom pressure varies with the collected liquid level D. The liquid level sensor in this embodiment adopts a pressure sensor, and when monitoring operation is performed, the liquid level sensor is placed at the bottom of a scene such as a measured river, a lake, a reservoir, an urban drainage pipe network, an inspection well and the like, the pressure born by the liquid level sensor changes along with the change of the liquid level, based on the pressure sensor, the pressure value is obtained through analog-digital conversion, and then the pressure value is converted into the collected liquid level D according to a liquid level pressure formula p=pgh.
The main control board 110 is configured to be disposed in the housing 130, and is configured to receive an electrical signal collected by the liquid level sensor, perform a cycle adjustment strategy to adjust a collection cycle and a communication cycle after converting the electrical signal into the collected liquid level D, perform a liquid level alarm strategy to adjust alarm information, and send alarm information according to the communication cycle.
The main control board 110 at least comprises a liquid level acquisition processor 112 arranged on the main control board 110 and configured to be electrically connected with the liquid level sensor 120 and used for receiving an electric signal and converting the electric signal into an acquired liquid level D; and receiving the acquisition command, and controlling the acquisition operation of the liquid level sensor 120 according to the acquisition command. The main control board 110 in this embodiment is a PCB board, on which various processing components are mounted and electrically connected through a control circuit.
The main control board 110 in this embodiment further includes a CPU111 and a parameter memory 114 mounted on the main control board 110; the CPU111 is electrically connected with the parameter memory 114 and the liquid level acquisition processor 112 respectively;
a parameter memory 114 configured to store a plurality of acquisition cycles, communication cycles, fluid level parameters, and alarm return-to-difference parameters thereof. Further, various parameters in the parameter memory 114 need to be set or modified according to the monitoring target. For example, EEPROM memory is employed.
The CPU111 is used for reading the collected liquid level D, the collection period, the communication period, the liquid level parameter and the alarm return difference parameter; when the periodic adjustment strategy is executed, comparing and analyzing the current collected liquid level D with the liquid level parameter to obtain a comparison result; based on a preset period adjustment strategy, automatically adjusting the acquisition period and the communication period by using a comparison result, so as to send an acquisition instruction to a liquid level signal processor according to the adjusted acquisition period; when the liquid level alarm strategy is executed, according to a plurality of acquired continuous acquired liquid levels D, a liquid level movement trend and a fluctuation range of the acquired liquid levels D are obtained; comparing the fluctuation range of the collected liquid level D with each alarm return difference parameter to obtain a comparison result, and obtaining the liquid level state of the fluctuation range of the current collected liquid level D; based on a preset liquid level alarm strategy, alarm information is sent according to the liquid level state and the adjusted communication period.
The main control board 110 of the embodiment is further provided with a timer RTC117, and the RTC117 is in signal connection with the CPU111, and the acquisition period and the communication period are adjusted by the RTC 117.
The main control board 110 in this embodiment further includes a wireless communicator 113 mounted on the main control board 110 and configured to receive the alarm information, and transmit the alarm information through a 3G/4G wireless communication technology. Further, a 3G/4G antenna 140 is included and configured to be electrically connected to the wireless communicator 113 using a watertight cable for communication gain of the wireless communicator. The 3G/4G antenna 140 in this embodiment is configured to be disposed outside the housing 130, and the communication gain of the 3G/4G antenna 140 to the wireless communicator is used to avoid unstable network signals in some application places. Of course, if the network signal in the application scenario is strong, the wireless communicator 113 may be directly used to connect to the cloud server.
The main control board 110 in this embodiment is further provided with a data memory 115, which is configured to be electrically connected to the CPU111, and is used for storing liquid level data including collected liquid level D, collected time, collected period, liquid level status, liquid level movement trend, communication period and alarm information. Local data transfer may be accomplished through data storage 115. For example, the data store 115 may employ a DATAFLASH memory.
Also included is a power supply device 150 configured to be electrically connected to the main control board 110 for powering the main control board 110 and the level sensor 120. The power supply device 150 in this embodiment may use a dedicated battery, and is disposed inside the housing 130. Further, the main control board 110 is further provided with a power manager 116, which is configured to be electrically connected to the CPU111, the power device 150, the liquid level sensor 120 and the parameter memory 114, and is configured to control the power device 150 to supply power according to the acquisition period and the communication period.
In addition, the main control board 110 in this embodiment is further provided with an automatic switch, which is electrically connected to the CPU111, and controls the liquid level sensor 120, the wireless communicator 113, and the power supply device 150 to be turned off when executing the liquid level alarm strategy, and the automatic switch in this embodiment may be a relay switch.
While preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the following claims be interpreted as including the preferred embodiments and all such alterations and modifications as fall within the scope of the application.
It will be apparent to those skilled in the art that various modifications and variations can be made to the present application without departing from the spirit or scope of the application. Thus, it is intended that the present application also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.
Claims (10)
1. An on-line automatic alarm method for liquid level monitoring, characterized in that the method comprises the following steps:
s1: reading a plurality of preset acquisition periods, communication periods, liquid level parameters and alarm return difference parameters;
s2: acquiring an acquisition liquid level D, comparing the acquisition liquid level D with the liquid level parameter, and acquiring a comparison result; based on a preset period adjustment strategy, automatically adjusting the acquisition period and the communication period by using a comparison result;
s3: according to the acquired multiple continuous acquired liquid levels D, a liquid level movement trend and a fluctuation range of the acquired liquid levels D are obtained; comparing the fluctuation range of the collected liquid level D with each alarm return difference parameter to obtain a comparison result, and obtaining the liquid level state of the fluctuation range of the current collected liquid level D; based on a preset liquid level alarm strategy, sending alarm information according to the liquid level state and the adjusted communication period;
the liquid level parameters comprise a warning liquid level line L1 and a safety liquid level line L2; dividing the liquid level state into a safe liquid level state, a warning liquid level state and a dangerous liquid level state from bottom to top by utilizing the warning liquid level line L1 and the safe liquid level line L2;
the collection period comprises a safe liquid level collection period TC1, a warning liquid level collection period TC2 and a dangerous liquid level collection period TC3; the communication period comprises a safety liquid level communication period TS1, a warning liquid level communication period TS2 and a dangerous liquid level communication period TS3;
wherein, the safety liquid level communication period TS1> the warning liquid level communication period TS2> the dangerous liquid level communication period TS3, and the safety liquid level acquisition period TC1> the warning liquid level acquisition period TC2> the dangerous liquid level acquisition period TC3;
the alarm return difference parameters of the warning liquid level line L1 comprise: dangerous return difference upper limit value L1a and dangerous return difference lower limit value L1b; the alarm return difference parameters of the safety liquid level line L2 comprise: an upper warning return difference limit value L2a and a lower warning return difference limit value L2b; wherein, L2b < L2a < L1b < L1a < L0, L0 is overflow liquid level line;
the step S3 includes:
s31: acquiring a plurality of continuous acquisition liquid levels D according to the adjusted acquisition period;
s32: according to a plurality of continuous collected liquid levels D, a liquid level movement trend and a fluctuation range of the collected liquid levels D are obtained;
s33: comparing and analyzing the fluctuation range of the collected liquid level D with each alarm return difference parameter to obtain the liquid level state of the fluctuation range of the current collected liquid level D;
when the liquid level is in an ascending trend, comparing and analyzing the fluctuation range of the collected liquid level D with a dangerous return difference lower limit value L1b and a warning return difference lower limit value L2b respectively;
when the fluctuation range of the liquid level D is larger than L2b, judging that the liquid level is kept in a warning liquid level state, and marking L2 b-L1 as a warning liquid level interval; when the fluctuation range < L2b of the liquid level D is collected, judging that the liquid level is in a disarmed liquid level state, and when the liquid level D is more than L2, judging that the liquid level is in a armed liquid level state again;
when the fluctuation range of the liquid level D is larger than L1b, judging that the liquid level is in a dangerous liquid level state, and marking L1 b-L0 as a dangerous liquid level interval; when the fluctuation range < L1b of the liquid level D is collected, judging that the liquid level enters a warning liquid level state, and when the liquid level D is collected and is more than L1, judging that the liquid level enters a dangerous liquid level state again;
when the liquid level is in a descending trend, comparing and analyzing the fluctuation range of the collected liquid level D with a dangerous return difference upper limit value L1a and a warning return difference upper limit value L2a respectively;
when the fluctuation range of the collected liquid level D is smaller than L1a, judging that the liquid level is kept in a warning liquid level state, and marking L1 a-L0 as a dangerous liquid level interval; when the fluctuation range of the liquid level D is larger than L1a, judging that the liquid level enters a dangerous liquid level state again;
when the fluctuation range of the collected liquid level D is smaller than L2a, judging that the liquid level is kept in a safe liquid level state, and marking L2 a-L1 as a warning liquid level interval; and when the fluctuation range of the liquid level D is larger than L2a, judging that the liquid level enters the warning liquid level state again.
2. The automatic on-line liquid level monitoring alarm method according to claim 1, wherein the step S2 comprises:
acquiring an acquisition liquid level D, respectively comparing the acquisition liquid level D with the warning liquid level line L1 and the safety liquid level line L2 to obtain a liquid level state, and adjusting an acquisition period and a communication period according to the liquid level state,
when D < L2, judging that the liquid level enters a safe liquid level state, changing the liquid level acquisition period into a safe liquid level acquisition period TC1, and changing the data communication period into a warning liquid level communication period TS1;
when L2< D < L1, judging that the liquid level enters an alert liquid level state, changing the liquid level acquisition period into an alert liquid level acquisition period TC2, and changing the data communication period into an alert liquid level communication period TS2;
when D > L1, judging that the liquid level enters a dangerous liquid level state, changing the liquid level acquisition period into a dangerous liquid level acquisition period TC3, and changing the data communication period into a dangerous liquid level communication period TS3.
3. An on-line liquid level monitoring automatic alarm system, characterized in that an on-line liquid level monitoring automatic alarm method according to any one of claims 1-2 is adopted, and the system comprises a monitoring end, a cloud server and a plurality of liquid level alarm devices; the cloud server is respectively connected with the monitoring end and the liquid level alarm equipment through signals;
the monitoring end is configured to access the cloud server to set or modify a plurality of acquisition periods, communication periods, liquid level parameters and alarm return difference parameters of the liquid level alarm devices, and monitor the current liquid level state monitored by the liquid level alarm devices and the sent alarm information;
the cloud server is configured to receive a plurality of acquisition periods, communication periods, liquid level parameters and alarm return difference parameters of the liquid level alarm devices and transmit the liquid level parameters and the alarm return difference parameters to the liquid level alarm devices; receiving the liquid level state and alarm information of each liquid level alarm device;
the liquid level alarm equipment is configured to collect liquid level D, execute a period adjustment strategy to adjust the collection period and the communication period according to a plurality of preset collection periods, communication periods, liquid level parameters and alarm return difference parameters thereof, execute a liquid level alarm strategy to adjust alarm information, and send alarm information to the cloud server according to the communication periods.
4. The on-line liquid level monitoring automatic alarm system of claim 3, wherein the liquid level alarm device is in signal connection with the cloud server using a 3G/4G wireless communication technology.
5. An on-line liquid level monitoring automatic alarm device employing the on-line liquid level monitoring automatic alarm method according to any one of claims 1-2, comprising: the device comprises a shell, a liquid level sensor and a main control board;
the shell is configured to be a waterproof sealing structure;
the liquid level sensor is arranged outside the shell, is electrically connected with the main control board by adopting a waterproof cable, is arranged at the bottom of the tested target liquid when monitoring is performed, and is used for collecting an electric signal generated by the pressure of the liquid bottom according to the collection period and transmitting the electric signal to the main control board; wherein the liquid bottom pressure varies with the liquid level;
the main control board is configured to be arranged in the shell and used for receiving the electric signals acquired by the liquid level sensor, executing a period adjustment strategy to adjust the acquisition period and the communication period after the electric signals are converted into acquired liquid level D, executing a liquid level alarm strategy to adjust alarm information, and transmitting the alarm information according to the communication period;
the main control board at least comprises a liquid level acquisition processor arranged on the main control board and is configured to be electrically connected with the liquid level sensor and used for receiving an electric signal and converting the electric signal into acquired liquid level D; receiving an acquisition instruction, and controlling the acquisition work of the liquid level sensor according to the acquisition instruction;
the main control board also comprises a CPU and a parameter memory which are arranged on the main control board; the CPU is respectively and electrically connected with the parameter memory and the liquid level acquisition processor;
the parameter storage is configured to store a plurality of acquisition periods, communication periods, liquid level parameters and alarm return difference parameters thereof;
the CPU is used for reading the collected liquid level D, the collection period, the communication period, the liquid level parameter and the alarm return difference parameter; when the periodic adjustment strategy is executed, comparing and analyzing the current collected liquid level D with the liquid level parameter to obtain a comparison result; based on a preset period adjustment strategy, automatically adjusting an acquisition period and a communication period by using a comparison result, so as to send an acquisition instruction to the liquid level signal processor according to the adjusted acquisition period; when the liquid level alarm strategy is executed, according to a plurality of acquired continuous acquired liquid levels D, a liquid level movement trend and a fluctuation range of the acquired liquid levels D are obtained; comparing the fluctuation range of the collected liquid level D with each alarm return difference parameter to obtain a comparison result, and obtaining the liquid level state of the fluctuation range of the current collected liquid level D; and sending alarm information according to the liquid level state and the adjusted communication period based on a preset liquid level alarm strategy.
6. The on-line level monitoring automatic alarm device of claim 5 wherein the main control board further comprises a wireless communicator mounted on the main control board and configured to receive alarm information and transmit the alarm information out in a 3G/4G wireless communication technology.
7. The on-line level monitoring automatic alarm device of claim 6 further comprising a 3G/4G antenna configured to electrically connect with the wireless communicator using a watertight cable for communication gain of the wireless communicator.
8. The on-line automatic level monitoring alarm device of claim 5 wherein the main control board is further provided with a data memory configured to be electrically connected to the CPU for storing level data including collected level D, collection time, collection period, level status, level movement trend, communication period, and alarm information.
9. The on-line level monitoring automatic alarm device of claim 5 further comprising a power supply device configured to be electrically connected to the main control board for powering the main control board and the level sensor.
10. The on-line automatic level monitoring alarm device of claim 9 wherein the main control board is further provided with a power manager configured to be electrically connected to the CPU, the power device, the level sensor and the parameter memory for controlling the power supplied to the power device according to the acquisition cycle and the communication cycle.
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| CN113341918A (en) * | 2021-05-28 | 2021-09-03 | 北京时域智控技术有限公司 | Railway wagon monitoring system and method |
| CN113738560B (en) * | 2021-08-24 | 2022-11-08 | 浙江大学 | Drainage pipeline spontaneous current amount and liquid level detection integrated wireless device and method |
| CN114247075A (en) * | 2021-11-17 | 2022-03-29 | 珠海格力电器股份有限公司 | Fire-fighting water information acquisition device |
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