CN115419579A - Dynamic control method for water level of drainage pump during starting and stopping - Google Patents
Dynamic control method for water level of drainage pump during starting and stopping Download PDFInfo
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/02—Stopping, starting, unloading or idling control
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/06—Control using electricity
Abstract
The invention discloses a dynamic control method of a drainage pump start-stop water level, which comprises a dynamic pump stop water level calculation step and a dynamic pump start water level calculation step; the invention can dynamically control the start-stop water level of the water pump, and effectively reduce the misoperation times of the standby water level switch in the start-stop control of the water pump; the siphon effect of the water pump pipeline is fully utilized, and the utilization rate of the water pump is improved; if the water level switch returns to an abnormal state or the water level sensor is stuck at a certain position, the water level updating frequency of the dynamic start-stop pump is too high, so that the dynamic control function of the water level of the water pump start-stop enters an abnormal state.
Description
Technical Field
The invention relates to the technical field of drainage pump starting and stopping, in particular to a dynamic control method for drainage pump starting and stopping water level.
Background
The drainage system is composed of a plurality of drainage pumps, a water pump start-stop power device, a PLC control system, a water level sensor/switch, an auxiliary power electronic device and the like, and the water pump start-stop control is realized by outputting a control signal to control the start and stop of the water pump through the PLC control system after the water level of the water storage tank reaches a preset start-stop water level.
The water level sensor and the water level switch are main start-stop control equipment of the drainage system, and are shown in figure 1. Under normal conditions, the water level sensor is mainly used, the analog quantity is used for controlling the starting and the stopping of the water pump, and when the water level sensor is in fault, the water level sensor is controlled by the water level switch, so that the starting and stopping fixed value of the water level switch is set to be slightly larger than the analog quantity starting and stopping fixed value of the water level sensor.
In the normal working process of a drainage system, when the water level is not yet equal to the water level of the start-stop set value of the analog water measuring pump, the water level switch is already actuated, so that misjudgments of water level sensor faults and water pump start-stop control abnormity are caused.
The reason for the water level switch malfunction is complex, such as:
1. the water level fluctuates, and when the analog quantity start-stop pump is close to the water level, the fluctuation of the water level in the water storage tank causes the misoperation of a water level switch;
2. the siphon effect of the water pump pipeline, after the water pump stops, the water level further drops due to the influence of the siphon effect of the water pump pipeline, and the misoperation of a pump-stopping water level switch is caused;
3. when the sensor mounting position or the water inlet of the reservoir is far away from a certain water pump, the actual water level near the water pump is smaller than the measured value of the sensor when the water pump pumps water, and when the water pump stops, the actual water level near the water pump already crosses the analog quantity pump stopping water level of the water level sensor, so that the misoperation of a pump stopping water level switch near the water pump is caused.
4. When the water level rises rapidly due to sudden change of the water inflow, the water level rises to be close to a pump starting water level switch in a short time in the process of the water pump reaching the analog quantity pump starting water level, program judgment, instruction sending, water pump starting and pipeline water filling, so that the pump starting water level switch is mistakenly operated.
The water level difference between the analog quantity start-stop fixed value and the switching quantity start-stop fixed value is generally set to be small, and if the switch is prevented from being operated mistakenly by simply increasing the distance between the analog quantity and the switching quantity, the control requirement of the water level of the system cannot be met.
Disclosure of Invention
The invention aims to overcome the defects and provide a dynamic control method for the start-stop water level of the drainage pump, so as to effectively reduce the misoperation times of a standby water level switch in the start-stop control of the water pump.
In order to solve the technical problems, the invention adopts the technical scheme that: a dynamic control method for the water level of drainage pump in start and stop mode includes a step of calculating the water level of dynamic stop pump and a step of calculating the water level of dynamic start pump,
the dynamic pump stopping water level calculating step comprises the following steps:
step 1: the dynamic control function of the water pump start-stop water level enables, initializes the dynamic pump stop water level X sTOP Equal to the fixed water level X of the analog quantity pump stop C1 ；
Step 2: after the water pump stops in the round, the dynamic pump stop water level X is judged STOP Whether the water level is at the maximum dynamic pump stopping water level X SMSX With minimum dynamic pump stop water level X SMIN If yes, go to step 3;
and step 3: judging whether the water pump start-stop water level dynamic control function is in an abnormal state, if not, entering the step 4 and the step 6;
and 4, step 4: checking whether a pump stopping water level switch acts before and after the pump stopping process of the water pump in the round, if so, entering the step 5;
and 5: increasing the dynamic pump-stopping water level X by a fixed value alpha STOP ；
Step 6: obtaining the lowest water level value X after the water pump of the round is stopped MIN The water level fixed value X is compared with the water level fixed value X of the analog quantity pump stop C1 Is a difference absolute value X SD ；
And 7: judgment of X SD Whether the water level is more than or equal to the dynamic pump stopping water level updating starting threshold value X T If yes, entering step 8;
and 8: if the lowest water level value X MIN Is less than the fixed water level X of the analog quantity pump stop C1 Entering step 9, otherwise entering step 10;
and step 9: increasing dynamic pump-stopping water level X by binary approximation method STOP ；
Step 10: dynamic pump-stopping water level X reduction by binary approximation method STOP ；
Step 11: after the dynamic pump stopping water level is updated, waiting for the next pump stopping process to execute the updated dynamic pump stopping water level X STOP Counting the updating times of the dynamic pump stopping water level;
the step of calculating the dynamic pump starting water level comprises the following steps:
step 1): the water pump start-stop water level dynamic control function enables to initialize the dynamic pump start-up water level X RUN Equal to the mouldWater level fixed value X of analog quantity starting pump C2 ；
Step 2): after the water pump is started in the round, the dynamic pump starting water level X is judged RUN Whether the water level is at the fixed value X of the analog quantity starting pump C2 And minimum dynamic pump starting water level X RMIN If yes, entering step 3;
step 3): judging whether the water pump start-stop water level dynamic control function is in an abnormal state, if not, entering the step 4;
step 4): checking whether a pump starting water level switch acts before and after the pump starting process of the current round of water pump, if so, entering the step 5;
step 5): reducing dynamic pump start water level X by fixed value beta RUN ；
Step 6): after the dynamic pump starting water level is updated, waiting for the next round of pump starting process to execute the updated dynamic pump starting water level X RUN And counting the updating times of the dynamic pump starting water level.
Further, in the step of calculating the dynamic pump stop water level, step 5 is specifically: increasing the dynamics by a fixed value alpha
Water level X for stopping pump STOP As in formula (1);
X STOP ＝X STOP +α (1)；
the step 6 specifically comprises the following steps: obtaining the lowest water level value X after the water pump of the round is stopped MIN The water level fixed value X is compared with the water level of the analog quantity pump stop C1 Is a difference absolute value X SD As in formula (2);
X SD ＝|X MIN -X C1 | (2)；
the step 9 specifically comprises: increasing dynamic pump-stopping water level X by binary approximation method STOP As in formula (3);
the step 10 specifically comprises: dynamic pump-stopping water level X reduction by binary approximation method STOP As in equation (4);
the step 11 specifically comprises: after the dynamic pump stopping water level is updated, waiting for the next pump stopping process to execute the updated dynamic pump stopping water level X STOP E, as the formula (5), and counting the updating times of the dynamic pump stopping water level;
in the step of calculating the dynamic pump starting water level, the step 5) is specifically as follows: reducing dynamic pump start water level X by fixed value beta RUN As in equation (6);
X RUN ＝X RUN -β (6)。
further, in the step of calculating the dynamic pump stop water level, for step 1, the analog quantity pump stop water level fixed value X C1 Is a fixed value and is set manually, and the lowest water level value X after the pump is stopped in the method MIN Water level fixed value X for stopping pump by analog quantity C1 Control is performed for the target value.
Further, in the step of calculating the dynamic pump stop water level, for step 2, the dynamic pump stop water level X is prevented STOP Increase and decrease of (2) causes systematic risk, and the maximum dynamic pump-stopping water level X is set manually SMAX And minimum dynamic pump stop water level X SMIN Only dynamic pump-stopping water level X STOP Less than maximum dynamic pump-stopping water level X SMAX And greater than the minimum dynamic pump-stopping water level X SMIN When the water level is updated, the pump is stopped and the dynamic water level is allowed to be updated; if the pump is stopped dynamically, the water level X STOP Greater than or equal to maximum dynamic pump stopping water level X SMAX Or less than or equal to the minimum dynamic pump stopping water level X SNIN And judging that the water pump dynamic start-stop water level control function is abnormal and enters an abnormal state, and outputting an alarm by the controller.
Further, in the step of calculating the dynamic pump stop water level, in step 3, if the dynamic water pump start-stop water level control function is in an abnormal state, the dynamic water pump start-stop water level control function is enabled to exit.
Further, in the step of calculating the dynamic pump stopping water level, for step 4, before and after the current pump stopping process of the water pump in the round is checked, if the pump stopping water level switch is not operated, the fixed value alpha is set to 0.
Further, in the step of calculating the dynamic pump-off water level, for step 7, a dynamic water level update start threshold X is set T The aim is to prevent frequent adjustment of the dynamic pump-stopping water level; if X SD Less than dynamic stop pump water level update start threshold X T Then X SD And setting 0.
Further, in the step of calculating the dynamic pump stopping water level, in the step 11, the number of times of updating the dynamic pump stopping water level is counted, an update frequency alarm threshold is manually set, and if the number of times of updating the dynamic pump stopping water level per day is greater than the alarm threshold, it is determined that the dynamic water pump starting and stopping water level control function is in an abnormal state.
Further, in the step of calculating the dynamic pump starting water level, for step 2, the dynamic pump starting water level X is prevented RUN Reduce the systematic risk caused by oversize, and manually set the minimum dynamic pump starting water level X RMIN Only dynamic starting pump level X RUN Less than or equal to the water level fixed value X of the analog quantity starting pump C2 And is greater than the minimum dynamic pump starting water level X RMIN Only allowing the dynamic water level of the starting pump to be updated; analog quantity pump-starting water level fixed value X C2 The value is a fixed value and is set manually; for the dynamic pump starting water level, the maximum value of the actual water level is the fixed value X of the analog quantity pump starting water level C2 Whether the dynamic pump starting water level is updated is only related to whether the pump starting switch acts or not, the maximum dynamic pump starting water level is not set, and the pump starting water level fixed value X is started by analog quantity C2 As an upper limit value; if the water level X of the pump is dynamically started RUN Greater than the water level fixed value X of the analog quantity starting pump C2 Or less than or equal to minimum dynamic starting pump water level X RMIN And judging that the water pump dynamic start-stop water level control function is abnormal and enters an abnormal state, and outputting an alarm by the controller.
Further, in the step of calculating the dynamic pump starting water level, for the step 3, if the dynamic water pump starting and stopping water level control function is in an abnormal state, the dynamic water pump starting and stopping water level control function is enabled to exit;
for step 4, checking whether the water pump is started before or after the water pump is started in the current round, and if the water level switch for starting the water pump does not act, setting the fixed value beta to 0;
and 6, counting the dynamic pump starting water level updating times, manually setting an alarm threshold of the dynamic pump starting water level updating frequency, and judging that the dynamic water pump starting and stopping water level control function is in an abnormal state if the daily updating times of the dynamic pump starting water level are greater than the alarm threshold.
The invention has the beneficial effects that:
1. the invention can dynamically control the water pump start-stop water level, and effectively reduce the false operation times of the standby water level switch in the water pump start-stop control;
2. the siphon effect of the water pump pipeline is fully utilized, and the utilization rate of the water pump is improved;
3. if the water level switch returns to an abnormal state or the water level sensor is stuck at a certain position, the water level updating frequency of the dynamic start-stop pump is too high, so that the dynamic control function of the water level of the water pump start-stop enters an abnormal state.
Drawings
FIG. 1 is a flow chart illustrating steps of calculating a dynamic stop pump water level in a dynamic control method for a drain pump start/stop water level;
FIG. 2 is a flowchart of steps for calculating a dynamic pump start level in a dynamic control method for a drain pump start/stop level;
FIG. 3 is a control logic diagram between the water level sensor, the water level switch and the corresponding modules;
fig. 4 is a schematic diagram illustrating the water level start/stop control of the water level sensor and the water level switch.
Detailed Description
The invention is described in further detail below with reference to the figures and the specific embodiments.
A dynamic control method for the water level of drainage pump in start and stop mode includes a step of calculating the water level of dynamic stop pump and a step of calculating the water level of dynamic start pump,
as shown in fig. 1, the step of calculating the dynamic pump stop water level includes:
step 1: the dynamic control function of the water pump start-stop water level is enabled to initialize the dynamic pump stop water level X STOP Equal to the fixed water level X of the analog quantity pump stop C1 ；
Step 2: after the water pump stops in the round, the dynamic pump stop water level X is judged STOP Whether the water level is at the maximum dynamic pump stopping water level X SMAX With minimum dynamic pump stop water level X SMIn If yes, go to step 3;
and 3, step 3: judging whether the water pump start-stop water level dynamic control function is in an abnormal state, if not, entering the step 4 and the step 6;
and 4, step 4: checking whether a pump stopping water level switch acts before and after the pump stopping process of the water pump in the round, if so, entering the step 5;
and 5: increasing the dynamic pump-stopping water level X by a fixed value alpha STOP ；
Step 6: obtaining the lowest water level value X after the water pump is stopped in the round MIN The water level fixed value X is compared with the water level fixed value X of the analog quantity pump stop C1 Is a difference absolute value X SD ；
And 7: judgment of X SD Whether the water level is more than or equal to the dynamic pump stopping water level updating starting threshold value X T If yes, entering step 8;
and step 8: if the lowest water level value X MIN Is less than the fixed water level X of the analog quantity pump stop C1 Entering step 9, otherwise entering step 10;
and step 9: increasing dynamic pump-stopping water level X by binary approximation method STOP ；
Step 10: dynamic pump-stopping water level X reduction by binary approximation method STOP ；
Step 11: after the dynamic pump stopping water level is updated, waiting for the next pump stopping process to execute the updated dynamic pump stopping water level X STOP Counting the updating times of the dynamic pump stopping water level;
as shown in fig. 2, the dynamic pump start level calculating step includes:
step 1): enabling the water pump start-stop water level dynamic control function, initializing the dynamic pump start water level X RUN Equal to analog valueConstant value X of pump water level C2 ；
Step 2): after the water pump of the round is started, the dynamic pump starting water level X is judged RUN Whether the water level is at the fixed value X of the analog quantity starting pump C2 And minimum dynamic pump starting water level X RMIN If yes, entering step 3;
step 3): judging whether the water pump start-stop water level dynamic control function is in an abnormal state, if not, entering the step 4;
step 4): checking whether a pump starting water level switch acts before and after the pump starting process of the current round of water pump, if so, entering the step 5;
step 5): reducing dynamic pump start water level X by fixed value beta RUN ；
Step 6): after the dynamic pump starting water level is updated, waiting for the next pump starting process to execute the updated dynamic pump starting water level X RUN And counting the updating times of the dynamic pump starting water level.
Further, in the step of calculating the dynamic pump stop water level, step 5 specifically includes: increasing the dynamics by a fixed value alpha
Water level X when stopping pump STOP As in formula (1);
X STOP ＝X STOP +α (1)；
the step 6 specifically comprises the following steps: obtaining the lowest water level value X after the water pump of the round is stopped MIN The water level fixed value X is compared with the water level fixed value X of the analog quantity pump stop C1 Is a difference absolute value X SD As in formula (2);
X SD ＝|X MIN -X C1 | (2)；
the step 9 specifically comprises the following steps: increasing dynamic pump-stopping water level X by binary approximation method STOP As in formula (3);
the step 10 specifically comprises: dynamic pump-stopping water level X reduction by binary approximation method STOP As in equation (4);
the step 11 is specifically as follows: after the dynamic pump stopping water level is updated, waiting for the next pump stopping process to execute the updated dynamic pump stopping water level X STOP E, as the formula (5), and counting the updating times of the dynamic pump stopping water level;
in the step of calculating the dynamic pump starting water level, the step 5) is specifically as follows: reducing the dynamic pump start water level X by a fixed value beta RUN As in equation (6);
X RUN ＝X RUN -β (6)。
further, in the step of calculating the dynamic pump stop water level, for step 1, the analog quantity pump stop water level fixed value X C1 Is a fixed value and is set manually, and the lowest water level value X after the pump is stopped in the method MIN Stopping pump by analog quantity water level definite value X C1 Control is performed for the target value.
Further, in the step of calculating the dynamic pump stop water level, for step 2, the dynamic pump stop water level X is prevented STOP The maximum dynamic pump-stopping water level X is manually set SMAX And minimum dynamic pump stop water level X SMIN Only dynamic pump-stopping water level X STOP Less than maximum dynamic pump-stopping water level X SMAX And greater than the minimum dynamic pump-stopping water level X SMIN When the water level is updated, the pump is stopped and the dynamic water level is allowed to be updated; if the pump is stopped dynamically, the water level X STOP Greater than or equal to maximum dynamic pump stopping water level X SMAX Or less than or equal to the minimum dynamic pump stopping water level X SMIN And judging that the water pump dynamic start-stop water level control function is abnormal and enters an abnormal state, and outputting an alarm by the controller.
Further, in the step of calculating the dynamic pump stop water level, for the step 3, if the dynamic water pump start-stop water level control function is in an abnormal state, the dynamic water pump start-stop water level control function is enabled to exit.
Further, in the step of calculating the dynamic pump stopping water level, for step 4, before and after the current pump stopping process of the water pump in the round is checked, if the pump stopping water level switch is not operated, the fixed value alpha is set to 0.
Further, in the step of calculating the dynamic pump-off water level, for step 7, a dynamic water level update start threshold X is set T The aim is to prevent frequent adjustment of the dynamic pump-stopping water level; if X SD Is less than the dynamic pump-stopping water level updating starting threshold value X T Then X SD And setting 0.
Further, in the step of calculating the dynamic pump stopping water level, in the step 11, the number of times of updating the dynamic pump stopping water level is counted, an updating frequency alarm threshold is manually set, and if the number of times of updating the dynamic pump stopping water level per day is greater than the alarm threshold, it is determined that the dynamic control function of the water pump start/stop water level is in an abnormal state.
Further, in the step of calculating the dynamic pump starting water level, for step 2, the dynamic pump starting water level X is prevented RUN Reduce the systematic risk caused by overlarge and manually set the minimum dynamic pump starting water level X RMIN Only dynamic pump starting water level X RUN The water level fixed value X is less than or equal to the analog quantity starting pump C2 And is greater than the minimum dynamic pump starting water level X RMIN Only allowing the dynamic water level update of the pump starting; analog quantity pump-starting water level fixed value X C2 The value is a fixed value and is set manually; for the dynamic pump starting water level, the maximum value of the actual water level is the fixed value X of the analog quantity pump starting water level C2 Whether the dynamic pump starting water level is updated is only related to whether the pump starting switch acts or not, the maximum dynamic pump starting water level is not set, and the fixed value X of the pump starting water level is started by analog quantity C2 As an upper limit value; if the water level X of the dynamic pump starting RUN Greater than the analog quantity pump-starting water level definite value X C2 Or less than or equal to minimum dynamic starting pump water level X RMIN And judging that the water pump dynamic start-stop water level control function is abnormal and entering an abnormal state, and outputting an alarm by the controller.
In the above scheme, for the dynamic pump starting water level, the influence of siphon effect (the water level continuously drops after the pump is stopped) on the stop of the water pump can not be caused when the water pump is started, and the maximum value of the actual water level is the analog quantity pump starting water levelConstant value X C2 Therefore, whether the dynamic pump starting water level is updated or not is only related to whether the pump starting switch acts or not, the maximum dynamic pump starting water level is not set, and the fixed value X of the pump starting water level is started by analog quantity C2 As the upper limit value.
Further, in the step of calculating the dynamic pump starting water level, for the step 3, if the dynamic water pump starting and stopping water level control function is in an abnormal state, the dynamic water pump starting and stopping water level control function is enabled to exit;
step 4, checking whether the water pump starting process of the current round is carried out or not, and if the pump starting water level switch does not act, setting the fixed value beta to be 0;
and 6, counting the dynamic pump starting water level updating times, manually setting an alarm threshold of the dynamic pump starting water level updating frequency, and judging that the dynamic water pump starting and stopping water level control function is in an abnormal state if the daily updating times of the dynamic pump starting water level are greater than the alarm threshold.
In this embodiment, for the whole water pump start/stop water level dynamic control function, a dynamic start/stop water level one-key reset button is set, and the water pump dynamic start/stop water level can be restored to the analog start pump water level fixed value X by one key when needed C2 The water level fixed value X is compared with the water level of the analog quantity pump stop C1 。
And setting a fault reset button for the whole water pump start-stop water level dynamic control function, resetting abnormal fault alarm of the water pump dynamic start-stop water level control function and setting the dynamic start-stop water level update times to 0.
The determination mode of the fixed values alpha and beta can be determined according to the actual use effect, the adjustment effect of the dynamic pump starting and stopping water level can be generated, excessive adjustment times cannot be generated, the increase of the fixed values can reduce the control precision of the dynamic pump starting and stopping water level and the adjustment times of the water level, and otherwise, the control precision of the dynamic pump starting and stopping water level and the adjustment times of the water level can be increased. The too small adjustment frequency may cause the abnormal alarm of the water level dynamic control function state of the water pump start, and the too large adjustment frequency may cause the unobvious water level adjustment effect of the dynamic start-stop pump. For a certain power station, the water bottom of the water pool is taken as a reference surface, the analog quantity starting pump water level fixed value is 450.00mm, the analog quantity stopping pump water level fixed value is 150.00mm, the fixed values alpha and beta can be referred to and set to be 0.1 percent (0.3 mm) to 1 percent (3 mm) of the difference value 300.00mm, and if the power station is currently set to be 1mm.
In this embodiment, a control logic diagram among the water level sensor, the water level switch and the corresponding modules related to the method is shown in fig. 3, and a water level start-stop control diagram of the water level sensor and the water level switch is shown in fig. 4.
As shown in fig. 3 and 4, the water level sensor and the water level switch are floating ball type water level monitoring devices respectively installed in the reservoir, and can detect water level variation in real time; the signal acquisition module, the logic calculation module and the control signal output module are 3 program function modules of the PLC control system respectively, and are used for respectively realizing acquisition and processing of water level signals, calculation of dynamic starting and stopping of the water level of the pump and output of starting and stopping control signals of the water pump. The signal acquisition module is used for acquiring analog quantity water level measured by the water level sensor and water level switching value input by the water level switch; the logic calculation module comprises a condition judgment for dynamic start-stop water level updating start, a dynamic water level updating calculation method, an abnormal fault judgment and the like; and the control signal output module is used for controlling the water pump to start and stop when the water pump reaches the dynamic start-stop water level.
The above-described embodiments are merely preferred embodiments of the present invention, and should not be construed as limiting the present invention, and features in the embodiments and examples in the present application may be arbitrarily combined with each other without conflict. The scope of the present invention is defined by the claims, and is intended to include equivalents of the features of the claims. I.e., equivalent alterations and modifications within the scope hereof, are also intended to be within the scope of this invention.
Claims (10)
1. A dynamic control method for the water level of a drainage pump during starting and stopping comprises a dynamic pump stopping water level calculation step and a dynamic pump starting water level calculation step, and is characterized in that:
the dynamic pump stopping water level calculating step comprises the following steps:
step 1: the dynamic control function of the water pump start-stop water level enables, initializes the dynamic pump stop water level X STOP Equal to the fixed water level X of the analog quantity pump stop C1 ；
Step 2: after the water pump stops in the round, the dynamic pump-stopping water level X is judged STOP Whether the water level is at the maximum dynamic pump stopping water level X SMAX And minimum dynamic pump stop water level X SMIN If yes, go to step 3;
and 3, step 3: judging whether the water pump start-stop water level dynamic control function is in an abnormal state, if not, entering the step 4 and the step 6;
and 4, step 4: checking whether a pump stopping water level switch acts before and after the pump stopping process of the water pump in the round, if so, entering the step 5;
and 5: increasing the dynamic pump-stopping water level X by a fixed value alpha STOP ；
Step 6: obtaining the lowest water level value X after the water pump of the round is stopped MIN The water level fixed value X is compared with the water level of the analog quantity pump stop C1 Is a difference absolute value X SD ；
And 7: judgment of X SD Whether the water level is more than or equal to the dynamic pump stopping water level updating starting threshold value X T If yes, go to step 8;
and step 8: if the lowest water level value X MIN Is less than the fixed water level X of the analog quantity pump stop C1 Entering step 9, otherwise entering step 10;
and step 9: increasing dynamic pump-stopping water level X by binary approximation method STOP ；
Step 10: dynamic pump-stopping water level X reduction by binary approximation method STOP ；
Step 11: after the dynamic pump stopping water level is updated, waiting for the next pump stopping process to execute the updated dynamic pump stopping water level X STOP Counting the updating times of the dynamic pump stopping water level;
the dynamic pump starting water level calculating step comprises the following steps:
step 1): the water pump start-stop water level dynamic control function enables to initialize the dynamic pump start-up water level X RUN Equal to the fixed water level X of the analog quantity starting pump C2 ；
Step 2): after the water pump is started in the round, the dynamic pump starting water level X is judged RUN Whether the water level is at the fixed value X of the analog quantity starting pump C2 And minimum dynamic pump starting water level X RMIN Within the limit of (a) of (b),if yes, entering step 3;
step 3): judging whether the water pump start-stop water level dynamic control function is in an abnormal state, if not, entering the step 4;
step 4): checking whether a pump starting water level switch acts before and after the pump starting process of the current round of water pump, if so, entering the step 5;
and step 5): reducing dynamic pump start water level X by fixed value beta RUN ；
Step 6): after the dynamic pump starting water level is updated, waiting for the next pump starting process to execute the updated dynamic pump starting water level X RUN And counting the updating times of the dynamic pump starting water level.
2. The method for dynamically controlling the start and stop water level of the drainage pump according to claim 1, wherein the method comprises the following steps:
in the step of calculating the dynamic pump stop water level, the step 5 is specifically as follows: increasing the dynamic pump-stopping water level X by a fixed value alpha STOP As in formula (1);
X STOP ＝X STOP +α (1)；
the step 6 specifically comprises the following steps: obtaining the lowest water level value X after the water pump of the round is stopped MIN The water level fixed value X is compared with the water level fixed value X of the analog quantity pump stop C1 Is absolute value X of the difference SD As in formula (2);
X SD ＝|X M1N -X C1 | (2)；
the step 9 specifically comprises the following steps: increasing dynamic pump-stopping water level X by binary approximation method STOP As in formula (3);
the step 10 specifically comprises: dynamic pump-stopping water level X reduction by binary approximation method STOP As in equation (4);
the step 11 is specifically as follows: after the dynamic pump stopping water level is updated, waiting for the next pump stopping process to execute the updated dynamic pump stopping water level X STOP E, as the formula (5), and counting the updating times of the dynamic pump stopping water level;
in the step of calculating the dynamic pump starting water level, the step 5) is specifically as follows: reducing dynamic pump start water level X by fixed value beta RUN As in equation (6);
X RUN ＝X RUN -β (6)。
3. the method for dynamically controlling the start and stop water level of the drainage pump according to claim 2, wherein the method comprises the following steps: in the step of calculating the dynamic pump stopping water level, for the step 1, the analog quantity pump stopping water level fixed value X C1 Is a fixed value and is set manually, and the lowest water level value X after the pump is stopped in the method MIN Water level fixed value X for stopping pump by analog quantity C1 The target value is controlled.
4. The dynamic control method for the start-stop water level of the drainage pump according to claim 2, characterized in that: in the step of calculating the dynamic pump stopping water level, for the step 2, the dynamic pump stopping water level X is prevented STOP The maximum dynamic pump-stopping water level X is manually set SMAX And minimum dynamic pump stop water level X SMIN Only dynamic pump-stopping water level X STOP Less than maximum dynamic pump-stopping water level X SMAX And greater than the minimum dynamic pump-stopping water level X SMIN When the water level is updated, the pump is stopped and the dynamic water level is allowed to be updated; if the pump is stopped dynamically, the water level X STOP Greater than or equal to the maximum dynamic pump stopping water level X SMAX Or less than or equal to the minimum dynamic pump stopping water level X SMIN And judging that the water pump dynamic start-stop water level control function is abnormal and entering an abnormal state, and outputting an alarm by the controller.
5. The dynamic control method for the start-stop water level of the drainage pump according to claim 2, characterized in that: in the step of calculating the dynamic pump stopping water level, for step 3, if the dynamic water pump starting and stopping water level control function is in an abnormal state, the dynamic water pump starting and stopping water level control function is enabled to exit.
6. The method for dynamically controlling the start and stop water level of the drainage pump according to claim 2, wherein the method comprises the following steps: in the step of calculating the dynamic pump stopping water level, for step 4, before and after the pump stopping process of the water pump in the current round is checked, if the pump stopping water level switch does not act, the fixed value alpha is set to be 0.
7. The method for dynamically controlling the start and stop water level of the drainage pump according to claim 2, wherein the method comprises the following steps: in the step of calculating the dynamic pump-stopping water level, for the step 7, a dynamic water level updating start threshold value X is set T The aim is to prevent frequent adjustment of the dynamic pump-stopping water level; if X SD Less than dynamic stop pump water level update start threshold X T Then X SD And setting 0.
8. The method for dynamically controlling the start and stop water level of the drainage pump according to claim 2, wherein the method comprises the following steps: in the step of calculating the dynamic pump stopping water level, in the step 11, the updating times of the dynamic pump stopping water level are counted, an updating frequency alarm threshold value is manually set, and if the daily updating times of the dynamic pump stopping water level are greater than the alarm threshold value, it is determined that the dynamic water pump starting and stopping water level control function is in an abnormal state.
9. The dynamic control method for the start-stop water level of the drainage pump according to claim 2, characterized in that: in the step of calculating the dynamic pump starting water level, for the step 2, the dynamic pump starting water level X is prevented RUN Reduce the systematic risk caused by overlarge and manually set the minimum dynamic pump starting water level X RMIN Only dynamic pump starting water level X RUN Less than or equal to the water level fixed value X of the analog quantity starting pump C2 And is greater than the minimum dynamic pump starting water level X RMIN Only allowing the dynamic water level of the starting pump to be updated; analog quantity pump-starting water level fixed value X C2 The value is a fixed value and is set manually; for the dynamic pump starting water level, the maximum value of the actual water level is the fixed value X of the analog quantity pump starting water level C2 Whether the dynamic pump starting water level is updated is only related to whether the pump starting switch acts or not, the maximum dynamic pump starting water level is not set, and the pump starting water level fixed value X is started by analog quantity C2 As an upper limit value; if the water level X of the dynamic pump starting RUN Greater than the analog quantity pump-starting water level definite value X C2 Or less than or equal to minimum dynamic starting pump water level X RMIN And judging that the water pump dynamic start-stop water level control function is abnormal and entering an abnormal state, and outputting an alarm by the controller.
10. The dynamic control method for the start-stop water level of the drainage pump according to claim 2, characterized in that: in the step of calculating the dynamic pump starting water level, for the step 3, if the dynamic water pump starting and stopping water level control function is in an abnormal state, the dynamic water pump starting and stopping water level control function is enabled to exit;
step 4, checking whether the water pump starting process of the current round is carried out or not, and if the pump starting water level switch does not act, setting the fixed value beta to be 0;
and 6, counting the dynamic pump starting water level updating times, manually setting an alarm threshold of the dynamic pump starting water level updating frequency, and judging that the dynamic water pump starting and stopping water level control function is in an abnormal state if the daily updating times of the dynamic pump starting water level are greater than the alarm threshold.
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