Spraying system, control method and device, and spraying equipment

Abstract

The embodiment of the present application provides a spraying system, a control method and device, and a spraying equipment. The spraying system comprises a liquid pump, a first on-off valve and a control unit. The control unit is used for acquiring a physical parameter value of the spraying system, determining a working state of the liquid pump according to a relationship between the physical parameter value and a preset range of the physical parameter value, and controlling the liquid pump and the first on-off valve to work according to the working state. The technical scheme provided by the embodiment of the present application controls the spraying system to perform corresponding actions according to the working state of the liquid pump, so as to prevent air from entering the liquid outlet pipe, to remove the air in the liquid inlet pipe and the liquid pump as soon as possible, and to release the residual pressure in the liquid outlet pipe when the liquid pump is turned off. Thus, the air difficult to remove in the liquid outlet pipe and the dripping of the nozzle are prevented, the stability of the spraying system is improved, the liquid outlet pipe is still full of liquid under the condition that the liquid pump is stopped for a long time, and the accuracy and timeliness of the spraying action are realized.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of spraying technology, in particular to a spraying system, a control method and device, and a spraying equipment. BACKGROUND

[0002] In the working process of the spraying system, when the liquid is sprayed out, air enters into the liquid pump and the liquid outlet pipe, which causes the liquid pump to idle, the pressure at the nozzle to decrease greatly, and the liquid remaining in the pipe to drip out of the nozzle to form droplets. In the next spraying, the air in the pipe needs to be discharged before the spraying can continue. If the air in the pipe is directly discharged through the small hole of the nozzle, the time is long, especially for the nozzle with the check function, the time is longer, which directly affects the working efficiency. In the process of discharging the air, the liquid remaining in the pipe also causes the nozzle to drip. In the case of fixed nozzle position, the dripping easily causes ground waterlogging and wastes liquid. In summary, preventing air from entering the liquid outlet pipe and discharging the air in the liquid inlet pipe and the liquid pump as soon as possible is very important to improve the working efficiency and stability of the spraying system and prevent the nozzle from dripping. It is also very important to solve the problem of the nozzle dripping caused by the residual pressure in the liquid outlet pipe when the liquid pump is closed. SUMMARY

[0003] The embodiments of the present application provide a spraying system, a control method and device, and a spraying equipment, which are used for preventing air from entering the liquid outlet pipe and discharging the air in the liquid inlet pipe and the liquid pump as soon as possible, and discharging the residual pressure in the liquid outlet pipe when the liquid pump is closed, so as to solve the problem of the air in the liquid outlet pipe being difficult to discharge and prevent the nozzle from dripping.

[0004] According to a first aspect of the embodiments of the present application, a spraying system is provided, which is characterized by comprising a liquid pump, a first switch valve and a control unit. The input end of the liquid pump is connected with a liquid inlet, which is used for pumping liquid and increasing pressure. The first end of the first switch valve is connected with the output end of the liquid pump and a liquid outlet, and the second end of the first switch valve is connected with a liquid discharge end, which is used for opening and closing the connection between the output end of the liquid pump and the liquid discharge end.

[0005] The control unit is used for acquiring a physical parameter value of the spraying system, determining the working state of the liquid pump according to the relationship between the physical parameter value and the preset range of the physical parameter value, and controlling the liquid pump and the first switch valve to work according to the working state.

[0006] Optionally, the control unit comprises a current acquisition unit, the current acquisition unit is configured to acquire a current value of the liquid pump as the physical parameter value of the spraying system; the control unit is configured to determine the working state of the liquid pump according to a relationship between the current value and a preset current value range, including: when the current value is less than a lower limit of the preset current value range, the working state is an idle state;

[0007] when the current value is within the preset current value range, the working state is an empty load state; and

[0008] when the current value is greater than an upper limit of the preset current value range, the working state is a full load state.

[0009] Optionally, the control unit further comprises a pressure sensor, the pressure sensor is configured to acquire a liquid pressure value of an output end of the liquid pump as the physical parameter value of the spraying system;

[0010] the control unit is configured to determine the working state of the liquid pump according to a relationship between the pressure value and a preset pressure value range, including:

[0011] when the pressure value is less than a lower limit of the preset pressure value range, the working state is an idle state;

[0012] when the pressure value is within the preset pressure value range, the working state is an empty load state; and

[0013] when the pressure value is greater than an upper limit of the preset pressure value range, the working state is a full load state.

[0014] Optionally, the control unit is configured to control the liquid pump and the first switch valve to work according to the working state of the liquid pump, including:

[0015] the control unit is configured to control the first switch valve to open when the working state of the liquid pump is an idle state;

[0016] the control unit is configured to control the first switch valve to close when the working state of the liquid pump is an empty load state;

[0017] the control unit is configured to control the first switch valve to close or a pulse switch and / or control the liquid pump pulse switch when the working state of the liquid pump is a full load state, wherein the pulse switch is a periodic opening and closing of the first switch valve and the liquid pump to obtain a continuous intermittent spraying mist.

[0018] Optionally, the control unit further comprises:

[0019] the control unit is configured to control the first switch valve to open for a preset time when the working state of the liquid pump changes to an idling state, and control the first switch valve and the liquid pump to stop working and / or send an alarm instruction when the working state of the liquid pump is still the idling state after the first switch valve opens for the preset time;

[0020] the control unit is configured to control the first switch valve to open for a preset time when the working state of the liquid pump changes to an idling state, and control the first switch valve and the liquid pump to stop working and / or send an alarm instruction when the working state of the liquid pump is still the idling state after the first switch valve opens for the preset time;

[0021] the control unit is configured to control the first switch valve to open for a preset time when the working state of the liquid pump changes to an idling state, and control the first switch valve and the liquid pump to stop working and / or send an alarm instruction when the working state of the liquid pump is still the idling state after the first switch valve opens for the preset time;

[0022] Optionally, the control unit further comprises:

[0023] the control unit is configured to control the first switch valve to open for a preset time when the working state of the liquid pump changes to an idling state, and control the first switch valve and the liquid pump to stop working and / or send an alarm instruction when the working state of the liquid pump is still the idling state after the first switch valve opens for the preset time;

[0024] Optionally, the spray system further comprises at least one one-way valve connected to the output end of the liquid pump, for preventing liquid in the liquid outlet pipe from flowing back to the liquid inlet end from the liquid pump after the liquid pump stops, so that air enters the liquid outlet pipe.

[0025] Optionally, the spray system further comprises a second switch valve and a delay module, the second switch valve is connected to the liquid outlet end, and the second switch valve is a normally closed electromagnetic valve.

[0026] the delay module is electrically connected to the second switch valve and the control unit, and is configured to maintain the energized state of the second switch valve for a preset time when the second switch valve is controlled to be closed or when the power supply is powered off, so that the second switch valve can be closed in a delayed manner.

[0027] Optionally, the control unit is further configured to synchronously control the liquid pump and the second switch valve.

[0028] and when the liquid pump is controlled to stop, the second switch valve is closed and the first switch valve is opened.

[0029] Optionally, the spray system further comprises:

[0030] an alarm device configured to receive an alarm instruction and send an alarm according to the alarm instruction, and the alarm device comprises a sound alarm device, a light alarm device, or a sound and light alarm device.

[0031] According to a second aspect of the embodiment of the present application, a spray system control method is provided, which is applied to the spray system of any of the optional embodiments of the first aspect, and the method comprises:

[0032] acquiring a physical parameter value of the spraying system;

[0033] determining a working state of the liquid pump according to a relationship between the physical parameter value and a preset range of the physical parameter value;

[0034] controlling the liquid pump and the first switch valve according to the working state.

[0035] Optionally, the physical parameter value of the spraying system is a current value, comprising:

[0036] acquiring a current value of the liquid pump, and determining a working state of the liquid pump according to a relationship between the current value and a preset current value range, wherein when the current value is less than a lower limit of the preset current value range, the working state is an idling state;

[0037] and when the current value is within the preset current value range, the working state is an empty load state;

[0038] and when the current value is greater than an upper limit of the preset current value range, the working state is a full load state.

[0039] Optionally, the physical parameter value of the spraying system is a pressure value, comprising:

[0040] acquiring a pressure value of the pressure sensor, and determining a working state of the liquid pump according to a relationship between the pressure value and a preset pressure value range, wherein when the pressure value is less than a lower limit of the preset pressure value range, the working state is an idling state;

[0041] and when the pressure value is within the preset pressure value range, the working state is an empty load state;

[0042] and when the pressure value is greater than an upper limit of the preset pressure value range, the working state is a full load state.

[0043]

[0044] Optionally, the controlling the liquid pump and the first switch valve according to the working state comprises:

[0045] when the working state of the liquid pump is the idling state, controlling the first switch valve to be opened;

[0046] and when the working state of the liquid pump is the empty load state, controlling the first switch valve to be closed;

[0047] and when the working state of the liquid pump is the full load state, controlling the first switch valve to be closed or a pulse switch and / or controlling a pulse switch of the liquid pump.

[0048] Optionally, the method further comprises:​

[0049] when the working state of the liquid pump changes to an idling state, controlling the first switch valve to open for a preset time, and when the working state is still the idling state, controlling the first switch valve and the liquid pump to stop working and / or sending an alarm instruction;

[0050] when the working state of the liquid pump changes to an empty load state, controlling the first switch valve to open for a preset time, and then controlling the first switch valve to close;

[0051] when the working state of the liquid pump changes to a full load state, controlling the first switch valve to close for a preset time, and then controlling the first switch valve to close or pulse opening and / or controlling the liquid pump to pulse opening.

[0052] Optionally, the method further comprises:

[0053] when the liquid pump is controlled to stop, opening the first switch valve for a preset time and then closing the first switch valve, so as to release the pressure of the liquid in the outlet pipe and prevent the nozzle from dripping due to the residual pressure in the outlet pipe.

[0054] Optionally, the method is applied to the spray system comprising the second switch valve and the delay module in the first aspect, and comprises:

[0055] synchronously controlling the liquid pump and the second switch valve;

[0056] and when the liquid pump is controlled to stop, closing the second switch valve and opening the first switch valve.

[0057] According to a third aspect of the embodiments of the present application, a spray system control device is provided, which is applied to any optional spray system in the first aspect, and the device comprises:

[0058] an acquisition module, configured to acquire a physical parameter value of the spray system;

[0059] a determination module, configured to determine a working state of the liquid pump according to a relationship between the physical parameter value and a preset range of the physical parameter value;

[0060] a first control module, configured to control the liquid pump and the first switch valve according to the working state.

[0061] Optionally, the device specifically comprises:

[0062] a current acquisition sub-module, configured to acquire a current value of the liquid pump;

[0063] a first determination sub-module, configured to determine the working state of the liquid pump according to a relationship between the current value and a preset current value range, including: when the current value is less than a lower limit of the preset current value range, the working state is an idling state;

[0064] and when the current value is within the preset current value range, the working state is an idle state;

[0065] and when the current value is greater than the upper limit of the preset current value range, the working state is a full load state.

[0066] Optionally, the device specifically further comprises:

[0067] a pressure acquisition submodule, configured to acquire a pressure value of the pressure sensor;

[0068] a second determination submodule, configured to determine the working state of the liquid pump according to a relationship between the pressure value and a preset pressure value range, including that when the pressure value is less than a lower limit of the preset pressure value range, the working state is an idle state;

[0069] and when the pressure value is within the preset pressure value range, the working state is an idle state;

[0070] and when the pressure value is greater than an upper limit of the preset pressure value range, the working state is a full load state.

[0071] Optionally, the control module is specifically configured to control the first on-off valve to open when the working state of the liquid pump is the idle state.

[0072] and when the working state of the liquid pump is the idle state, control the first on-off valve to close;

[0073] and when the working state of the liquid pump is the full load state, control the first on-off valve to close or the pulse on-off and / or control the pulse on-off of the liquid pump.

[0074] Optionally, the control module is specifically further configured to

[0075] when the working state of the liquid pump changes to the idle state, control the first on-off valve to open for a preset time, and when the working state is still the idle state, control the first on-off valve and the liquid pump to stop working and / or send an alarm instruction;

[0076] and when the working state of the liquid pump changes to the idle state, control the first on-off valve to open for a preset time, and then control the first on-off valve to close;

[0077] and when the working state of the liquid pump changes to the full load state, control the first on-off valve to close for a preset time, and then control the first on-off valve to close or the pulse on-off and / or control the pulse on-off of the liquid pump.

[0078] Optionally, the device further comprises:

[0079] The second control module is configured to open the first switch valve for a preset time period after the liquid pump stops, and then close the first switch valve, so as to release the liquid in the outlet pipe and prevent the nozzle from dripping due to the residual pressure in the outlet pipe.

[0080] Optionally, the device is used in the spray system including the second switch valve and the delay module according to the first aspect, and includes:

[0081] The third control module is configured to synchronously control the liquid pump and the second switch valve, and close the second switch valve and open the first switch valve when the liquid pump stops.

[0082] According to a fourth aspect of the embodiments of the present application, a spray device is provided, which includes the spray system according to any one of the first aspect, and further includes a processor, a memory, and a computer program stored in the memory and configured to be executed by the processor, wherein the processor implements the method according to any one of the second aspect when executing the computer program.

[0083] According to a fifth aspect of the embodiments of the present application, a computer readable storage medium is provided, which stores a computer program, wherein the computer program is executed by a processor to implement the method according to any one of the second aspect.

[0084] The embodiments of the present application can include the following beneficial effects through the above technical solutions:

[0085] The above technical solutions provided by the embodiments of the present application can achieve the following effects: according to the working state of the liquid pump, the spray system performs corresponding actions, so as to prevent air from entering the outlet pipe, and to quickly remove the air in the inlet pipe and the liquid pump, and to release the residual pressure in the outlet pipe when the liquid pump is closed, so as to solve the problem of difficult removal of air in the outlet pipe and prevent the nozzle from dripping, improve the stability of the spray system, and keep the outlet pipe full of liquid in the case of long-term stop of the liquid pump, so as to realize the accuracy and timeliness of the spray action.

[0086] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present disclosure. BRIEF DESCRIPTION OF DRAWINGS

[0087] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure or the prior art, the drawings required to be used in the embodiments or the prior art description will be briefly introduced below, and together with the description, used to explain the principles of the present disclosure. Obviously, the drawings in the following description can only be some embodiments of the present disclosure, and those skilled in the art can also obtain other drawings according to these drawings without creative labor.

[0088] Figure 1A schematic diagram of a spray system provided in an embodiment of the present invention. Figure 1 ;

[0089] Figure 2 A schematic diagram of a spray system provided in an embodiment of the present invention. Figure 2 ;

[0090] Figure 3 A schematic diagram of a spray system provided in an embodiment of the present invention. Figure 3 ;

[0091] Figure 4 A schematic diagram of the control timing of a pulse switch provided in an embodiment of the present invention;

[0092] Figure 5 A schematic diagram of the control timing of a control unit provided in an embodiment of the present invention;

[0093] Figure 6 A schematic diagram of a spray system including a one-way valve provided for an embodiment of the present invention;

[0094] Figure 7 This is a schematic diagram of another spray system provided in an embodiment of the present invention;

[0095] Figure 8 A schematic diagram of a delay module provided in an embodiment of the present invention;

[0096] Figure 9 A flow chart of a spray system control method provided in an embodiment of the present invention. Figure 1 ;

[0097] Figure 10 A flow chart of a spray system control method provided in an embodiment of the present invention. Figure 2 ;

[0098] Figure 11 A schematic diagram of a spray system control device provided in an embodiment of the present invention. Figure 1 ;

[0099] Figure 12 A schematic diagram of a control device for determining the operating state of a liquid pump provided in an embodiment of the present invention;

[0100] Figure 13 A schematic diagram of a spray system control device provided in an embodiment of the present invention. Figure 2 . Detailed Implementation

[0101] The exemplary embodiments will be described in detail herein with reference to the attached drawings. The description below refers to the accompanying drawings, which show, by way of example, specific embodiments with which the principles of the present disclosure can be implemented. The same reference numbers in different drawings identify the same or similar elements.

[0102] The spray system provided by the embodiment of the present application comprises a liquid pump 01, a first on-off valve 02 and a control unit 03. Figure 1 As shown in the figure, the spray system comprises a liquid pump 01, a first on-off valve 02 and a control unit 03. The input end of the liquid pump 01 is connected with the liquid inlet end 11, for pumping and pressurizing liquid through the liquid inlet pipe 14. The first end of the first on-off valve 02 is connected with the output end of the liquid pump 01 and the liquid outlet end 12, and the second end of the first on-off valve 02 is connected with the liquid discharge end 13, for opening and closing the connection between the output end of the liquid pump 01 and the liquid outlet end 12 and the liquid discharge end 13, i.e. when the first on-off valve 02 is opened, the gas, liquid or gas-liquid mixture delivered by the liquid pump 01 can be discharged through the liquid discharge end 13, or when the liquid pump 01 is stopped, the residual pressure in the output end of the liquid pump 01 and the liquid outlet pipe 15 can be discharged to prevent liquid from dripping from the nozzle 17.

[0103] The control unit 03 is used to acquire the physical parameter value of the spray system, determine the working state of the liquid pump 01 according to the relationship between the physical parameter value and the preset range of the physical parameter value, and control the liquid pump 01 and the first on-off valve 02 to work according to the working state of the liquid pump 01.

[0104] Exemplarily, the liquid pump 01 in the embodiment of the present application can be a pump structure, such as a diaphragm pump or a plunger pump, but is not limited to the diaphragm pump and the plunger pump, as both the diaphragm pump and the plunger pump belong to a volume pump. The first on-off valve 02 can be a controllable on-off valve, such as an electromagnetic valve or an electric valve, but is not limited to the electromagnetic valve and the electric valve. Preferably, the electromagnetic valve can be selected, as it can be selected according to the length of the continuous working time, and has reliable action and fast response time, for example, the response time of a high-precision electromagnetic valve can reach 5 ms. The normally open electromagnetic valve is closed when powered and is opened when powered off, and the normally closed electromagnetic valve is opened when powered and is closed when powered off. As the first on-off valve in the embodiment of the present application can only be opened when the spray system is working, the normally closed electromagnetic valve is preferred in the embodiment of the present application. Of course, this is only an example and is not a limitation of the present application.

[0105] For example, in the embodiment of the present application, the physical parameter value of the spray system for determining the working state of the liquid pump can be obtained in different ways. For example, the current value of the liquid pump directly reflects the current working state of the liquid pump, or the liquid pressure in the pipeline at the output end of the liquid pump reflects the current working state of the liquid pump, or other ways, which are not limited here and will be described below.

[0106] For example, the working state of the liquid pump includes an idle state, an empty state, and a full state. In the idle state, the pump cavity of the liquid pump is empty or contains a small amount of liquid. In the empty state, the pump cavity of the liquid pump is filled with liquid or contains a small amount of air. When the liquid has not reached the nozzle or there is no nozzle, the liquid pumped by the pump is not hindered by the nozzle and the pressure is greatly increased. At this time, the current value of the liquid pump or the liquid pressure value has not reached the rated value. In the full state, the liquid pumped by the liquid pump is hindered by the nozzle, and the liquid is sprayed from the nozzle, so that the liquid pressure in the outlet pipe is greatly increased. At this time, the current value of the liquid pump also increases greatly. Therefore, when the idle state, the empty state and the full state change, the current value and the liquid pressure value of the liquid pump will change obviously, especially when the empty state changes to the full state or the full state changes to the idle state, the current value and the liquid pressure value of the liquid pump change sharply.

[0107] Specifically, in the embodiment of the present application, as shown in Figure 2 The control unit 03 includes a current acquisition unit 06, and the physical parameter value obtained is the current value. The current acquisition unit 06 can be directly acquired, for example, by a sampling resistor, or indirectly acquired, for example, by a transformer or a Hall sensor. Of course, there can be other current acquisition methods, which are not limited here. Specifically, the control unit 03 is configured to determine the working state of the liquid pump according to the relationship between the current value and the preset current value range. When the current value is less than the lower limit of the preset current value range, the working state of the liquid pump can be understood as the idle state. When the current value is within the preset current value range, the working state of the liquid pump can be understood as the empty state. When the current value is greater than the upper limit of the preset current value range, the working state of the liquid pump can be understood as the full state. Therefore, the lower limit threshold can be set as the current value in the empty state, and the upper limit threshold can be set as the current value in the full state.

[0108] In addition, in the embodiment of the present application, as shown in Figure 3As shown, the control unit 03 can further include a pressure sensor 07 for acquiring the liquid pressure value at the output end of the liquid pump, and the acquired physical parameter value is the pressure value. Specifically, the control unit 03 is configured to determine the working state of the liquid pump according to the relationship between the pressure value and a preset pressure value range, including: when the pressure value is less than the lower limit of the preset pressure value range, the working state of the liquid pump can be understood as an idle state; when the pressure value is within the preset pressure value range, the working state of the liquid pump can be understood as an empty load state; and when the pressure value is greater than the upper limit of the preset pressure value range, the working state of the liquid pump can be understood as a full load state. Therefore, the lower limit threshold of the preset pressure value range of the liquid pump can be set as the pressure value in the empty load state, and the upper limit threshold of the preset pressure value range of the liquid pump can be set as the pressure value in the full load state.

[0109] Further, the current value or pressure value in the idle state, empty load state and full load state can be obtained in the actual working state. The corresponding current value or pressure value in the corresponding working state can be determined according to the statistical value in the actual working state. It should be understood that because the working current or liquid pressure of the liquid pump will fluctuate to a certain extent under actual working conditions, such as a small amount of air or other factors interference, in order to improve the reliability of the system response, the lower limit threshold of the current value or pressure value can be increased or decreased, for example, by 5%, and the upper limit threshold of the current value or pressure value can be reduced, for example, by 5%. Of course, this is only an example and is not a specific limitation of the present application.

[0110] Specifically, in this embodiment of the invention, the control unit 03 is used to quickly remove air or gas-liquid mixture from the inlet pipe 14 and the liquid pump 01 when the liquid pump is in an idling state. By controlling the first switch valve 02 to open, since the pressure at the discharge end 13 is close to zero, the air or gas-liquid mixture will not flow to the outlet end 12, but will be directly discharged through the discharge end 13, thus achieving the purpose of quickly removing air; and when the liquid pump is in an unloaded state, that is, the inlet pipe 14 and the pump chamber of the liquid pump 01 are filled with liquid or contain a small amount of air, wherein the small amount of air has little effect on spraying, by controlling the first switch valve 02 to close, the liquid is transported to the nozzle 17 through the outlet pipe 15; and when the liquid pump 01 is in a fully loaded state, that is, the pump chamber and the outlet pipe 15 are filled with liquid or contain a small amount of air that has little effect on spraying, and the nozzle 17 sprays droplets, entering the normal spraying state. At this time, the control methods include the following: Method 1, by controlling The first switch valve 02 remains closed, entering a continuous spraying state; Method two: By controlling the pulse switch of the first switch valve 02, the liquid pump 01 continuously outputs liquid. When the first switch valve 02 is closed, the liquid enters the outlet pipe 15 and is sprayed through the nozzle 17. When the first switch valve 02 is opened, the liquid is discharged from the drain end 13 through the first switch valve 02, stopping the nozzle 17 from spraying. At the same time, the pressure in the outlet pipe 15 is also released, preventing the nozzle 17 from dripping, thus achieving the purpose of continuous intermittent spraying; Method three: By controlling the pulse switch of the liquid pump 01 and the first switch valve 02, when the liquid pump 01 is opened, the first switch valve 02 is closed, allowing the liquid to spray through the nozzle 17. When the liquid pump 01 is closed, the first switch valve 02 is opened or opened for a preset time and then closed, wherein the preset time is less than the time when the liquid pump 01 is closed, thereby allowing the residual pressure in the outlet pipe to be released from the drain end, stopping the spraying and preventing the nozzle from dripping, thus achieving the purpose of continuous intermittent spraying.

[0111] Explanatory, such as Figure 4 As shown, the pulse period S1 of the pulse switch consists of an on-time S11 and an off-time S12, wherein the on-time S11 ranges from 20ms to 700ms, and the off-time S12 ranges from 500ms to 2000ms. The effect of achieving continuous intermittent spraying through the pulse-switch liquid pump and / or the first switching valve is to reduce the intensity of the airflow by controlling the amount of mist sprayed per cycle. The intermittent spraying method significantly reduces the continuity of the airflow generated by the droplet movement, thereby reducing the airflow intensity and significantly reducing the amount of droplet drift, thus improving the droplet deposition rate. Of course, the above embodiments are merely exemplary, and some improvements or other combinations are possible and do not depart from the scope of the invention.

[0112] Optionally, the control unit provided by the embodiment of the present application is further configured to, when the working state of the liquid pump changes to the idling state, control the first switch valve to be opened for a preset time, and when the working state is still the idling state, the following situations may occur: 1, the liquid is used up, 2, the liquid inlet pipe is damaged, 3, the input end of the liquid pump is loose and air leaks, 4, the pump cavity of the liquid pump is damaged, etc. Therefore, in order to prevent the liquid pump from being damaged due to long-time idling, the first switch valve and the liquid pump are controlled to stop working and / or an alarm instruction is sent, wherein the alarm instruction is used to remind the user to handle in time. When the working state of the liquid pump changes to the empty state, the liquid inlet pipe and the pump cavity of the liquid pump are filled with liquid or a small amount of air, the first switch valve is controlled to be opened for a preset time, and then the first switch valve is controlled to be closed. Specifically, the preset time can be adjusted according to actual use, so that the air is as much as possible to be discharged from the first switch valve before the first switch valve is closed, and the liquid enters the liquid outlet pipe. When the working state of the liquid pump changes to the full load state, the first switch valve is controlled to be closed for a preset time, and then the first switch valve is controlled to be closed or the pulse switch and / or the liquid pump is controlled to be pulsed. Specifically, the preset time can be adjusted according to actual use. In order to prevent the upper limit threshold of the set current or pressure from being less than the current value or pressure value when the actual full load is caused, the pulse switch first electromagnetic valve and / or the liquid pump, the air in the liquid outlet pipe is difficult to be discharged from the nozzle, causing incomplete or unable to atomize when spraying, so the first switch valve is controlled to be closed for a preset time to as much as possible to discharge the air from the nozzle before the first switch valve is closed or the pulse switch and / or the liquid pump is controlled to be pulsed. In summary, by increasing the preset time, the accuracy of the working state of the liquid pump is improved and the reliability of the spraying is improved.

[0113] Further, in order to solve the problem of liquid dripping from the nozzle, as shown in Figure 5 Figure 5 ​For the control timing diagram of the liquid pump and the first switch valve, the control unit provided by the embodiment of the present application is used to control the first switch valve to open for a preset time period S23 and then control the first switch valve to close when the control unit controls the liquid pump to stop, i.e. when the transition from S11 to S12. The preset time period S23 can be adjusted according to the actual situation of the liquid drop of the nozzle. Specifically, when the control unit controls the liquid pump to stop, if there is no other channel, the liquid in the liquid outlet pipe continues to flow to the outside of the pipe through the nozzle due to the residual pressure. When the pressure is lower than the atomization pressure of the nozzle, the liquid loses the energy for spraying and can only seep out of the nozzle hole to gradually form liquid drops. When the liquid drops accumulate to a certain degree, they fall from the nozzle due to gravity, forming the liquid drop phenomenon. In order to prevent the liquid drop phenomenon from occurring, another channel other than the nozzle must be provided to release the pressure. Therefore, the embodiment of the present application opens the first switch valve through the control unit, so that the liquid in the liquid outlet pipe releases the pressure through the channel of the first switch valve. After the residual pressure is released, the channel of the first switch valve is closed in time to prevent the liquid from being discharged through the first switch valve under the action of gravity, causing air to enter the liquid outlet pipe from the nozzle hole or, when the nozzle is located below the first switch valve, causing the liquid to be discharged from the nozzle hole and the air to enter the liquid outlet pipe from the first switch valve, thereby affecting the next spraying.

[0114] It should be understood that the technical solution provided by the above embodiment of the present application can prevent air from entering the liquid outlet pipe, so that the liquid outlet pipe and the nozzle are kept in a state of being filled with liquid. In the case where the liquid pump cavity and the output end of the liquid pump to the input end of the first switch valve are filled with liquid or have a small amount of air, as long as the liquid pump is started, the liquid can be immediately sprayed and atomized. Therefore, a very short spraying time can be used, for example, 200 ms for one spraying, and the actual atomization time is about 50 ms. Therefore, the automatic constant humidity device can be used for short spraying time and variable stop time, and the residual pressure in the liquid outlet pipe is released when the liquid pump stops or during the stop time in the pulse switch mode to prevent liquid drops from the nozzle and to make the continuous intermittent spraying process smooth and neat.

[0115] Optionally, the spraying system provided by the embodiment of the present application, as shown in Figure 6 The spraying system further comprises at least one one-way valve 04 connected to the output end of the liquid pump 01, which is used to allow liquid to flow out of the liquid pump 01 only. After the liquid pump 01 stops, the liquid in the liquid outlet pipe 15 is prevented from flowing back to the liquid inlet end 11 and flowing out, thereby preventing air from entering the liquid outlet pipe 15 through the nozzle hole of the nozzle 17 and affecting the spraying. It should be understood that the one-way valve 04 can also be replaced by a normally closed switch valve. Of course, a one-way valve (not shown in the figure) can also be added to the input end of the first switch valve 02 to prevent the liquid at the liquid discharge end 13 from flowing into the liquid outlet pipe.

[0116] Optionally, the spraying system provided by the embodiment of the present application, as shown in Figure 6 The spraying system further comprises a filter 05 connected to the input end of the liquid pump for filtering out impurities in the liquid to ensure the cleanliness of the spraying liquid. The filter comprises PP cotton or a mesh filter, but is not limited to PP cotton or a mesh filter.

[0117] Optionally, the spraying system provided by the embodiment of the present application, as shown in Figure 7 The spraying system further comprises a second switch valve 08 and a delay module 09. The second switch valve 08 is preferably a normally closed electromagnetic valve and is synchronously controlled with the liquid pump 01, that is, the second switch valve is opened or closed at the same time when the liquid pump is opened or closed. The delay module 09 is electrically connected to the control unit 03 and the second switch valve 08. As shown in Figure 8 The delay module 09 comprises an energy storage capacitor 81 and a diode 82. The energy storage capacitor 81 is used for storing and releasing electric energy, and the diode 82 is used for allowing the released electric energy to flow only to the second switch valve 08, so that the second switch valve 08 is closed after a preset time, achieving the purpose of power-off delay. The capacity of the energy storage capacitor determines the length of the preset time. In addition, the first switch valve is a normally open electromagnetic valve. It can be understood that the delay module 09 can be separately provided, or can be provided on the second switch valve 08 or the control unit 03. When the power supply is powered off, the energy storage capacitor starts to release electric energy, and the diode limits the released electric energy to flow only to the coil of the second switch valve, so as to maintain the energized state of the valve body within the preset time, so that the second switch valve can be closed after the preset time, so that the residual pressure in the liquid outlet pipe can flow into the first switch valve through the second switch valve, thereby avoiding the situation that the nozzle drips due to factors such as power failure.

[0118] Further, the control unit is used for synchronously controlling the liquid pump and the second switch valve in the embodiment of the present application. It should be understood that the first switch valve is still controlled according to the corresponding working state, and the specific implementation manner has been described in detail in the foregoing embodiment, which will not be described here.

[0119] When the liquid pump is controlled to stop, the second switch valve is closed and the first switch valve is opened. It is explained that since the second switch valve can be closed with delay, it only needs to be controlled to be closed, and can be closed after the preset time. Since the first switch valve is normally open, it is in an open state in the case of power failure, thereby opening the liquid outlet pipe connection and achieving the purpose of pressure relief.

[0120] Optionally, the spraying system provided by the embodiment of the present application further comprises an alarm configured to receive an alarm instruction and send an alarm according to the alarm instruction, and the alarm comprises a sound alarm, a light alarm or a sound-light alarm; for example, the control unit sends an alarm instruction when the working state of the liquid pump changes to the idling state and the first on-off valve is opened for a preset time and the working state is still the idling state.

[0121] The spraying system control method provided by the embodiment of the present application comprises the following steps as shown in Figure 9

[0122] S101, acquiring a physical parameter value of the spraying system;

[0123] S102, determining a working state of the liquid pump according to a relationship between the physical parameter value and a preset range of the physical parameter value;

[0124] S103, controlling the liquid pump and the first on-off valve according to the working state.

[0125] For example, the working state of the liquid pump comprises an idling state, an empty load state and a full load state, and the liquid pump and the first on-off valve perform corresponding actions according to the working state, and details are described in the detailed description of the embodiment of the present application shown in Figure 1

[0126] In the embodiment of the present application, the physical parameter value of the spraying system used to determine the working state of the liquid pump can be acquired in different ways, for example, the current value of the liquid pump directly reflects the current working state of the liquid pump, or the liquid pressure value in the output pipeline of the liquid pump reflects the current working state of the liquid pump, or other ways, which are not limited here and will be described below.

[0127] It can be understood that in the embodiment of the present application, the current value of the liquid pump or the liquid pressure in the output pipeline of the liquid pump can be acquired in different ways, for example, a single current value or pressure value can be acquired for determination, or multiple current values or pressure values in a period of time can be acquired for determination, and the acquisition of multiple current values will be described in detail below:

[0128] Specifically, in the embodiment of the present application, considering the influence of multiple factors in the actual working process of the liquid pump, the acquired current value fluctuates to a certain extent, and therefore the current value determined according to multiple current values in a period of time is more stable and reliable; thus, multiple current values in a preset time length can be acquired according to a preset sampling frequency, and the preset time length can be set according to actual needs, for example, can be adjusted according to the working mode of the liquid pump, which is not limited here; in order to improve the accuracy and timeliness of the working state of the liquid pump reflected by multiple current values in a period of time, a sliding window algorithm can be used to acquire multiple current values of the liquid pump in a preset time length.​​

[0129] Further, in the embodiment of the present application, after obtaining the plurality of current values of the liquid pump within the preset time period, the current value of the liquid pump can be determined according to the plurality of current values. In the embodiment of the present application, the specific method for determining the current value of the liquid pump according to the plurality of current values can be: performing weighted calculation on the plurality of current values to obtain the current value of the liquid pump; or determining the minimum current value from the plurality of current values as the current value of the liquid pump.

[0130] Specifically, after obtaining the plurality of current values, the weighted average of the plurality of current values can be used as the current value of the liquid pump within the preset time period, so as to improve the accuracy of judging the working state of the liquid pump; or the plurality of obtained current values can be arranged according to the size, and the minimum current value is determined from the plurality of current values as the current value of the liquid pump, so as to improve the timeliness of judging the working state of the liquid pump. For example, when other current values in the plurality of obtained current values do not reach the lower limit of the current threshold, but the minimum current value reaches the lower limit of the current threshold, such as in the case of current fluctuation caused by the liquid pump entering a small amount of air, the liquid pump and the on-off valve can be controlled in a timely manner to exclude the air through the first on-off valve, so as to prevent the delay of judging that the liquid pump is actually in the working state.

[0131] It can be understood that the above example only illustrates the specific way of determining the current value of the liquid pump according to the plurality of obtained current values. In actual application, other ways can also be used, and corresponding adjustments can be made according to actual needs, as long as the determined current value of the liquid pump can correspond to the working state of the liquid pump, which is not limited specifically herein.

[0132] In the embodiment of the present application, when the driving device of the liquid pump is a motor, a certain starting time is required, the starting current is dynamic and changes significantly within a short time, so the obtained current value cannot reflect the actual working state. Therefore, when the liquid pump starts, the current value of the liquid pump needs to be obtained after a preset time, and the preset time should be greater than the starting time of the liquid pump, which can be set according to the parameters of the actual liquid pump, which is not limited specifically herein.

[0133] It should be noted that the specific implementation of obtaining and determining the pressure value is similar to the above-mentioned method of obtaining and determining the current value, which will not be described herein.

[0134] Specifically, the method provided by the embodiment of the present application, wherein S101 obtains the physical parameter value of the spraying system as a current value or a pressure value,

[0135] S102 determines the working state of the liquid pump according to the relationship between the physical parameter value and the preset range of the physical parameter value, specifically including:

[0136] I. Obtain the current value of the liquid pump, and determine the working state of the liquid pump according to the relationship between the current value and the preset current value range, including when the current value is less than the lower limit of the preset current value range, the working state is an idle state;

[0137] And when the current value is in the preset current value range, the working state is an empty load state;

[0138] And when the current value is greater than the upper limit of the preset current value range, the working state is a full load state.

[0139] II. Obtain the pressure value of the pressure sensor, and determine the working state of the liquid pump according to the relationship between the pressure value and the preset pressure value range, including when the pressure value is less than the lower limit of the preset pressure value range, the working state is an idle state;

[0140] And when the pressure value is in the preset pressure value range, the working state is an empty load state;

[0141] And when the pressure value is greater than the upper limit of the preset pressure value range, the working state is a full load state.

[0142] The method provided by the embodiment of the application, wherein S103 specifically comprises:

[0143] When the working state of the liquid pump is an idle state, control the first on-off valve to open;

[0144] And when the working state of the liquid pump is an empty load state, control the first on-off valve to close;

[0145] And when the working state of the liquid pump is a full load state, control the first on-off valve to close or a pulse on-off valve and / or control the liquid pump pulse on-off valve, wherein the pulse on-off valve is the first on-off valve, the liquid pump is periodically opened and closed to obtain a continuous intermittent injection of the mist body.

[0146] In order to ensure that the air is as completely removed as possible, the opening time of the first on-off valve is increased to remove the air that may be left in the pump cavity of the liquid pump, or the closing time of the first on-off valve is increased to remove the air that may be left in the outlet pipe and the nozzle, wherein S103 specifically further comprises:

[0147] When the working state of the liquid pump changes to an idle state, control the first on-off valve to open for a preset time, and when the working state is still an idle state, control the first on-off valve and the liquid pump to stop working and / or send an alarm instruction;

[0148] And when the working state of the liquid pump changes to an empty load state, control the first on-off valve to open for a preset time, and then control the first on-off valve to close;

[0149] And when the working state of the liquid pump changes to the full load state, after controlling the first switching valve to close for a preset time, control the first switching valve to close or pulse switch and / or control the liquid pump to pulse switch.

[0150] Furthermore, the method provided in the embodiments of the present invention, such as Figure 10 As shown, the method also includes:

[0151] S104. When the control pump stops, the first switch valve is opened for a preset time and then closed to release the pressure of the liquid in the outlet pipe and prevent the nozzle from dripping due to residual pressure in the outlet pipe.

[0152] Optionally, the method of this embodiment of the invention is applied to... Figure 7 The sprinkler system shown includes:

[0153] Synchronize the control of the liquid pump and the second switching valve;

[0154] And when the control pump stops, the second switching valve is closed and the first switching valve is opened.

[0155] In summary, by determining the current operating state of the liquid pump, and based on this state, corresponding control is applied to the liquid pump and the first switching valve to prevent air from entering the outlet pipe and to quickly remove air from the inlet pipe and the liquid pump. Furthermore, when the liquid pump is shut down, the residual pressure in the outlet pipe is released to resolve the issue of air that is difficult to remove from the outlet pipe and to prevent nozzle dripping, thereby improving system stability. Moreover, even when the liquid pump has been stopped for a long time, the outlet pipe remains full of liquid, ensuring timely spraying action.

[0156] Based on the same inventive concept, this invention also provides a spray system control device. Since the principle by which this device solves the problem is similar to the aforementioned spray system control method, the implementation of this device can refer to the implementation of the aforementioned method, and the repeated parts will not be described again.

[0157] The sprinkler system control device provided in the embodiments of the present invention, such as Figure 11 As shown, it includes:

[0158] Module 111 is used to acquire the physical parameter values ​​of the sprinkler system;

[0159] The determining module 112 is used to determine the working state of the liquid pump based on the relationship between the physical parameter value and the preset range of the physical parameter value;

[0160] The first control module 113 is used to control the liquid pump and the first switching valve according to the working state.

[0161] Optional, such as Figure 12 As shown, the device specifically includes:

[0162] The current acquisition submodule 211 is configured to acquire a current value of the liquid pump.

[0163] The first determination submodule 212 is configured to determine the working state of the liquid pump according to a relationship between the current value and a preset current value range, including: when the current value is less than a lower limit of the preset current value range, the working state is an idle state.

[0164] When the current value is within the preset current value range, the working state is an empty load state.

[0165] When the current value is greater than an upper limit of the preset current value range, the working state is a full load state.

[0166] Optionally, the device specifically further includes:

[0167] The pressure acquisition submodule is configured to acquire a pressure value of the pressure sensor.

[0168] The second determination submodule is configured to determine the working state of the liquid pump according to a relationship between the pressure value and a preset pressure value range, including: when the pressure value is less than a lower limit of the preset pressure value range, the working state is an idle state.

[0169] When the pressure value is within the preset pressure value range, the working state is an empty load state.

[0170] When the pressure value is greater than an upper limit of the preset pressure value range, the working state is a full load state.

[0171] Optionally, the control module is specifically configured to control the first on-off valve to open when the working state of the liquid pump is the idle state.

[0172] When the working state of the liquid pump is the empty load state, the control module is specifically configured to control the first on-off valve to close.

[0173] When the working state of the liquid pump is the full load state, the control module is specifically configured to control the first on-off valve to close or a pulse on-off valve and / or control the liquid pump pulse on-off valve, wherein the pulse on-off valve is a periodic opening and closing of the first on-off valve and the liquid pump, so as to obtain a continuous intermittent injection of a mist body.

[0174] Optionally, the control module is specifically further configured to

[0175] When the working state of the liquid pump changes to the idle state, the control module is specifically configured to control the first on-off valve to open for a preset time, and when the working state is still the idle state, control the first on-off valve and the liquid pump to stop working and / or send an alarm instruction.

[0176] and when the working state of the liquid pump changes to the empty state, the first switch valve is controlled to open for a preset time and then to close;

[0177] and when the working state of the liquid pump changes to the full state, the first switch valve is controlled to close for a preset time and then to close or pulse switch and / or the liquid pump pulse switch.

[0178] Optionally, the spraying system control device provided by the embodiment of the present application comprises, as shown in Figure 13 the device further comprises:

[0179] The second control module 114 is configured to open the first switch valve for a preset time and then to close the first switch valve when the liquid pump is controlled to stop, so as to release the pressure in the liquid outlet pipe and prevent the nozzle from dripping due to the residual pressure in the liquid outlet pipe.

[0180] Optionally, the spraying system control device provided by the embodiment of the present application is applied to, as shown in Figure 7 the device further comprises:

[0181] The third control module is configured to synchronously control the liquid pump and the second switch valve, and to close the second switch valve and open the first switch valve when the liquid pump is controlled to stop.

[0182] Further, the embodiment of the present application further provides a spraying device comprising the spraying system described in any of the above embodiments, and further comprising a processor, a memory, and a computer program stored in the memory and configured to be executed by the processor, wherein the processor is configured to support the spraying system to realize the functions of the above method embodiments.

[0183] Further, the embodiment of the present application further provides a computer readable storage medium, and the computer readable storage medium stores a computer program, and the computer program is executed by a processor to realize each step process described in the above method embodiments.

[0184] It can be understood that, if the integrated unit is implemented in the form of a software function unit and sold or used as an independent product, it can be stored in a corresponding computer-readable storage medium based on such understanding. The present application implements all or part of the processes in the above-mentioned corresponding embodiment methods, which can also be completed by instructing related hardware through a computer program. The computer program can be stored in a computer-readable storage medium, and the computer program can implement the steps of each method embodiment when executed by a processor. The computer program includes computer program code, which can be in the form of source code, object code, executable files, or some intermediate forms, etc. The computer-readable medium can include any entity or device, recording medium, U disk, mobile hard disk, magnetic disk, optical disk, computer memory, read-only memory (ROM), random access memory (RAM), electrical carrier signal, telecommunication signal, and software distribution medium, etc. that can carry the computer program code. It should be noted that the contents included in the computer-readable medium can be appropriately increased or decreased according to the requirements of legislation and patent practice in the jurisdiction. For example, in some jurisdictions, according to legislation and patent practice, the computer-readable medium does not include electrical carrier signals and telecommunication signals.

[0185] Those skilled in the art can understand that the drawings are only schematic of a preferred embodiment, and the modules or processes in the drawings are not necessarily essential for implementing the present application.

[0186] Those skilled in the art can understand that the modules in the device in the embodiments can be distributed in the device in the embodiments according to the embodiment description, or can be changed and located in one or more devices different from the embodiments. The modules in the above-mentioned embodiments can be combined as one module, or can be further split into multiple sub-modules.

[0187] The above-mentioned serial numbers of the embodiments of the present application are only for description, and do not represent the advantages and disadvantages of the embodiments.

[0188] Obviously, those skilled in the art can make various modifications and variations to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application belong to the scope of the claims of the present application and their equivalent technologies, the present application also intends to include these modifications and variations.

Claims

1. A sprinkler system characterized in that, The control unit is configured to obtain a physical parameter value of the spraying system, determine a working state of the liquid pump according to a relationship between the physical parameter value and a preset range of the physical parameter value, and control the liquid pump and the first switch valve to work according to the working state. The control unit is further configured to control the first switch valve to open when the working state of the liquid pump is the idling state. The control unit is further configured to control the first switch valve to close when the working state of the liquid pump is the no-load state. The control unit is further configured to control the first switch valve to close when the working state of the liquid pump is the full-load state, or control the first switch valve to be pulsed, or control the first switch valve and the liquid pump to be pulsed, control the liquid pump to open when the first switch valve is controlled to close, and control the liquid pump to close when the first switch valve is controlled to open. The control unit comprises a current acquisition unit configured to obtain the physical parameter value of the spraying system as a current value of the liquid pump.

2. The sprinkler system of claim 1, wherein The control unit is configured to determine the working state of the liquid pump according to a relationship between the current value and a preset current value range. The working state is the idling state when the current value is less than a lower limit of the preset current value range. The working state is the no-load state when the current value is within the preset current value range. The working state is the full-load state when the current value is greater than an upper limit of the preset current value range.

3. The sprinkler system of claim 1, wherein The control unit can further comprise a pressure sensor configured to obtain the physical parameter value of the spraying system as a liquid pressure value of an output end of the liquid pump. The control unit is configured to determine the working state of the liquid pump according to a relationship between the pressure value and a preset pressure value range. The working state is the idling state when the pressure value is less than a lower limit of the preset pressure value range. The working state is the no-load state when the pressure value is within the preset pressure value range. The working state is the full-load state when the pressure value is greater than an upper limit of the preset pressure value range.

4. The sprinkler system of claim 1, wherein The control unit is further configured to control the first switch valve to open when the working state of the liquid pump changes to the idling state, and control the first switch valve and the liquid pump to stop working and / or send an alarm instruction when the working state is still the idling state after the first switch valve is controlled to open for a preset time. The control unit is further configured to control the first switch valve to close when the working state of the liquid pump changes to the no-load state after the first switch valve is controlled to open for a preset time. ​ and when the working state of the liquid pump is in the full load state, the first switch valve is controlled to be closed after a preset time, or the first switch valve is controlled to be pulsed, or the first switch valve and the liquid pump are controlled to be pulsed, and when the first switch valve is controlled to be closed, the liquid pump is controlled to be opened, and when the first switch valve is controlled to be opened, the liquid pump is controlled to be closed.

5. The sprinkler system according to any of claims 1, 4, wherein The control unit further comprises: The control unit is configured to control the first switch valve to be opened for a preset time period and then to be closed when the liquid pump is controlled to be stopped, so as to release the pressure of the liquid in the outlet pipe and prevent the nozzle from dripping due to the residual pressure in the outlet pipe.

6. The sprinkler system of claim 1, wherein The one-way valve is configured to prevent the liquid in the outlet pipe from flowing back to the inlet end of the liquid pump after the liquid pump is stopped, so as to prevent air from entering the outlet pipe.

7. The sprinkler system of claim 1, wherein Further comprising: The second switch valve is connected to the outlet end, and the second switch valve is a normally closed electromagnetic valve. The delay module is electrically connected to the second switch valve and the control unit, and is configured to maintain the energized state of the second switch valve for a preset time period when the second switch valve is controlled to be closed or when the power supply is powered off, so that the second switch valve can be closed in a delayed manner.

8. The sprinkler system according to claim 1 or 7, wherein The control unit is further configured to synchronously control the liquid pump and the second switch valve. When the liquid pump is controlled to be stopped, the second switch valve is controlled to be closed and the first switch valve is controlled to be opened.

9. The sprinkler system according to claim 1 or 4, wherein Further comprising: The alarm is configured to receive an alarm instruction and issue an alarm according to the alarm instruction, and the alarm comprises a sound alarm, a light alarm, or a sound and light alarm.

10. A method of controlling a sprinkler system as claimed in any one of claims 1 to 9, characterized in that The method comprises: acquiring a physical parameter value of the spraying system; determining a working state of the liquid pump according to a relationship between the physical parameter value and a preset range of the physical parameter value; controlling the liquid pump and the first switch valve according to the working state; controlling the first switch valve to be opened when the working state of the liquid pump is in an idling state; controlling the first switch valve to be closed when the working state of the liquid pump is in an empty load state; controlling the first switch valve to be closed when the working state of the liquid pump is in a full load state, or controlling the first switch valve to be pulsed, or controlling the first switch valve and the liquid pump to be pulsed, and when the first switch valve is controlled to be closed, the liquid pump is controlled to be opened, and when the first switch valve is controlled to be opened, the liquid pump is controlled to be closed.

11. The method of claim 10, wherein, The physical parameter value of the spraying system is a current value, and the acquiring comprises: acquiring a current value of the liquid pump, and determining a working state of the liquid pump according to a relationship between the current value and a preset current value range, wherein when the current value is less than a lower limit of the preset current value range, the working state is an idling state; when the current value is within the preset current value range, the working state is an empty load state; and when the current value is greater than an upper limit of the preset current value range, the working state is a full load state.

12. The method of claim 10, wherein, The physical parameter value of the spraying system is a pressure value, and the acquiring comprises: acquiring a pressure value of a pressure sensor, and determining a working state of the liquid pump according to a relationship between the pressure value and a preset pressure value range, wherein when the pressure value is less than a lower limit of the preset pressure value range, the working state is an idling state; when the pressure value is within the preset pressure value range, the working state is an empty load state; and when the pressure value is greater than an upper limit of the preset pressure value range, the working state is a full load state. and when the pressure value is greater than the upper limit of the preset pressure value range, the working state is a full load state. The method further comprises:

13. The method of claim 10, wherein, when the working state of the liquid pump changes to an idling state, controlling the first switch valve to open for a preset time, and when the working state is still the idling state, controlling the first switch valve and the liquid pump to stop working and / or sending an alarm instruction; when the working state of the liquid pump changes to an empty load state, controlling the first switch valve to open for a preset time, and then controlling the first switch valve to close; when the working state of the liquid pump changes to a full load state, controlling the first switch valve to close for a preset time, and then controlling the first switch valve to close; or controlling the first switch valve to pulse switch; or controlling the first switch valve and the liquid pump to pulse switch, controlling the liquid pump to open when the first switch valve is controlled to close, and controlling the liquid pump to close when the first switch valve is controlled to open. The method further comprises:

14. The method of any one of claims 10, 13, wherein, when the liquid pump is controlled to stop, opening the first switch valve for a preset time and then closing the first switch valve, so as to release the pressure of the liquid in the outlet pipe and prevent the nozzle from dripping due to the residual pressure in the outlet pipe. comprises:

15. The method according to claim 10, for use in a sprinkler system according to claim 1 or 7, characterized in that, synchronously controlling the liquid pump and the second switch valve; and when the liquid pump is controlled to stop, closing the second switch valve and opening the first switch valve. The device comprises:

16. A spray system control device applied to the spray system according to any one of claims 1 to 9, characterized in that, an acquisition module configured to acquire a physical parameter value of the spraying system; a determination module configured to determine a working state of the liquid pump according to a relationship between the physical parameter value and a preset range of the physical parameter value; a first control module configured to control the liquid pump and the first switch valve according to the working state; the first control module is specifically configured to control the first switch valve to open when the working state of the liquid pump is an idling state; control the first switch valve to close when the working state of the liquid pump is an empty load state; and when the working state of the liquid pump is a full load state, control the first switch valve to close; or control the first switch valve to pulse switch; or control the first switch valve and the liquid pump to pulse switch, control the liquid pump to open when the first switch valve is controlled to close, and control the liquid pump to close when the first switch valve is controlled to open. The device specifically comprises:

17. The apparatus of claim 16, wherein, a current acquisition submodule configured to acquire a current value of the liquid pump; a first determination submodule configured to determine a working state of the liquid pump according to a relationship between the current value and a preset current value range, including when the current value is less than the lower limit of the preset current value range, the working state is an idling state; and when the current value is within the preset current value range, the working state is an empty load state; and when the current value is greater than the upper limit of the preset current value range, the working state is a full load state. The device specifically further comprises:

18. The apparatus of claim 16, wherein, a pressure acquisition submodule configured to acquire a pressure value of the pressure sensor; a second determination submodule configured to determine a working state of the liquid pump according to a relationship between the pressure value and a preset pressure value range, including when the pressure value is less than the lower limit of the preset pressure value range, the working state is an idling state; ​ and when the pressure value is within the preset pressure value range, the working state is an empty load state; and when the pressure value is greater than the upper limit of the preset pressure value range, the working state is a full load state.

19. The apparatus of claim 16, wherein, The control module is specifically further configured to when the working state of the liquid pump changes to an idling state, control the first switch valve to open for a preset time, and when the working state is still the idling state, control the first switch valve and the liquid pump to stop working and / or send an alarm instruction; when the working state of the liquid pump changes to an empty load state, control the first switch valve to open for a preset time, and then control the first switch valve to close; when the working state of the liquid pump changes to a full load state, control the first switch valve to close for a preset time, and then control the first switch valve to close; or control the first switch valve to be pulsed, or control the first switch valve and the liquid pump to be pulsed, and when the first switch valve is controlled to be closed, the liquid pump is controlled to be opened, and when the first switch valve is controlled to be opened, the liquid pump is controlled to be closed.

20. The apparatus of any of claims 16, 19, wherein, The device further comprises: a second control module configured to, when the liquid pump is controlled to stop, open the first switch valve for a preset time and then close the first switch valve, so as to release the pressure of the liquid in the liquid outlet pipe and prevent the nozzle from dripping due to the residual pressure in the liquid outlet pipe.

21. The device of claim 16, for use in a sprinkler system as claimed in claim 1 or 7, characterized in that, comprising: a third control module configured to synchronously control the liquid pump and the second switch valve; and when the liquid pump is controlled to stop, close the second switch valve and open the first switch valve.

22. A shower apparatus, characterized in that The spray system comprises the spray system according to any one of claims 1 to 9; further comprising a processor, a memory, and a computer program stored in the memory and configured to be executed by the processor, and the processor implements the method according to any one of claims 10 to 15 when executing the computer program.

23. A computer readable storage medium having stored thereon a computer program, characterized in that, The computer program is executed by the processor to implement the method according to any one of claims 10 to 15.

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