Water pump control device

Abstract

A water pump control device comprises a sensor, a switching module electrically connected with the sensor, a power switch electrically connected with the switching module, and a water pump electrically connected with the power switch. The power switch is electrically connected between the water pump and a water pump power supply, the switching module is electrically connected with a system power supply, the water pump power supply is different from the system power supply, and the switching module is configured to control the power switch according to information output by the sensor, so that the power switch connects or disconnects a power supply path between the water pump and the water pump power supply. Therefore, in a cooling system, if liquid leaks, the water level is abnormal, an emergency switch sends out an alarm signal and the like, the switching module can independently cut off the power supply source of the water pump through the power switch, so that the water pump effectively stops running, the influence range is prevented from being expanded, meanwhile, other components except the water pump can still normally supply power to run, and the service life of the water pump is prolonged. Other control abnormal conditions caused by water pump outage are avoided.

Description

Technical Field

[0001] This application relates to an electric control technology, and particularly to a water pump control device powered by dual power supplies. Background Art

[0002] In a cooling system, a water pump plays an important role in driving the flow of liquid, and the sensing control circuit is in a single-ended output operation form. If the sensing control circuit fails, causing the water pump to fail to stop operating in time, serious abnormalities in the cooling system will occur.

[0003] In view of this, it is necessary to provide a technical solution different from the prior art to solve the problems existing in the known technology. Summary of the Invention

[0004] The purpose of this application is to provide a water pump control device to prevent the water pump from failing to stop operating in time due to the failure of the control circuit.

[0005] To achieve the above purpose, one aspect of this application provides a water pump control device, including a sensor, a switching module, a power switch, and a water pump. The switching module is electrically connected to the aforementioned sensor. The power switch is electrically connected to the aforementioned switching module. The water pump is electrically connected to the aforementioned power switch. The power switch is electrically connected between the water pump and the water pump power supply, the switching module is electrically connected to the system power supply, and the water pump power supply is different from the system power supply. The switching module is configured to control the power switch according to the information output by the sensor, so that the power switch connects or disconnects the power supply path between the water pump and the water pump power supply.

[0006] Optionally, it further includes an emergency switch, which is connected to the switching module. The switching module is configured to control the power switch according to the information output by the sensor or the emergency switch, so that the water pump connects or disconnects the water pump power supply.

[0007] Optionally, the emergency switch is a manual switch or a remote control switch. Optionally,

[0008] Optionally, the switching module is configured to preferentially control the power switch according to the information output by the emergency switch, so that the water pump connects or disconnects the water pump power supply.

[0009] Optionally, the switching module is a detection control circuit, and the detection control circuit includes a comparator and a control logic circuit, and the comparator is electrically connected to the control logic circuit.

[0010] Optionally, the power switch is a DC power switch.

[0011] Optionally, the DC power switch is an electromagnetic contactor or a solid-state relay.

[0012] Optionally, it further includes a current isolator, and the water pump power supply, the current isolator, the power switch, and the water pump are connected in series in sequence.

[0013] Optionally, the current isolator is a hot plug-in module, and the hot plug-in module is configured to have a surge current isolation function.

[0014] Optionally, it further includes a controller, and the system power supply, the controller, and the switching module are connected in series in sequence.

[0015] Optionally, the sensor, the controller, and the switching module are connected in series in sequence.

[0016] Optionally, the sensor is directly connected to the switching module.

[0017] Optionally, the sensor is a leakage detector or a water level detector.

[0018] Optionally, the system power supply is a DC output terminal of a low-voltage DC power supply, and the water pump power supply is a DC output terminal of a high-power DC power supply.

[0019] To achieve the above object, another aspect of the present application provides a water pump control device, including an emergency switch, a switching module, a power switch, and a water pump. The switching module is electrically connected to the emergency switch. The power switch is electrically connected to the switching module. The water pump is electrically connected to the power switch. The emergency switch, the switching module, and the system power supply are connected in series in sequence, and the power switch is electrically connected between the water pump and the water pump power supply. The switching module is configured to control the power switch according to the information output by the emergency switch, so that the power switch connects or disconnects the power supply path between the water pump and the water pump power supply.

[0020] Optionally, the switching module is a detection and control circuit, and the detection and control circuit includes a comparator and a control logic circuit, and the comparator is electrically connected to the control logic circuit.

[0021] Optionally, it further includes a current isolator, and the water pump power supply, the current isolator, the power switch, and the water pump are connected in series in sequence.

[0022] Optionally, the current isolator is a hot plug-in module, and the hot plug-in module is configured to have a surge current isolation function.

[0023] Optionally, it further includes a controller, and the controller, the switching module, and the emergency switch are connected in series in sequence.

[0024] Optionally, the system power supply is a DC output terminal of a low-voltage DC power supply, and the water pump power supply is a DC output terminal of a high-power DC power supply.

[0025] The water pump control device according to the embodiment of the present application is powered by a system power supply. The switching module receives information from sensors and / or emergency switches to generate control signals, and controls the power switch to connect or disconnect the power supply path between the water pump and the water pump power supply according to the control signals. Thus, in a cooling system, in case of liquid leakage, abnormal water level, or an alarm signal sent by the emergency switch, the switching module can independently cut off the power supply of the water pump via the power switch, causing the water pump to effectively stop running, so as to prevent the influence range from expanding. At the same time, other components except the water pump can still be powered and operate normally, avoiding other control anomalies caused by the power failure of the water pump. In addition, the water pump control device can also be modularized, which is convenient for product storage, transportation, assembly, and maintenance, and is beneficial to enhancing the product competitiveness. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a block diagram of the water pump control device according to the embodiment of the present application.

[0027] Figure 2 is a schematic diagram of a sample of the water pump control device according to the embodiment of the present application.

[0028] DESCRIPTION OF THE REFERENCE NUMERALS

[0029] 10, 10': water pump control device

[0030] 11, 11', 21: sensors

[0031] 11a, 21a: leakage detectors

[0032] 11b, 21b: water level detectors

[0033] 12, 12', 22: switching modules

[0034] 13, 13', 23: power switches

[0035] 14, 14', 24: water pumps

[0036] 15, 15', 25: system power supplies

[0037] 16, 16', 26: water pump power supplies

[0038] 17, 17', 27: controllers

[0039] 18, 18', 28: emergency switches

[0040] 19, 19', 29: current isolators

[0041] 1A, 2A: main power supplies

[0042] 20: water pump control device sample DETAILED DESCRIPTION OF THE EMBODIMENTS

[0043] In a cooling system (such as an ice water cooling system), the water pump plays an important role in driving the liquid to flow, and the sensing control circuit is in the form of single-ended output operation. If the sensing control circuit fails, causing the water pump to fail to stop running in time, it will lead to serious abnormalities in the cooling system, making the failure of the cooling system more serious and causing greater cost losses.

[0044] In view of this, the present application proposes a water pump control device powered by dual power supplies and having a dual-ended output operation form, which can be applied to, for example, an ice water cooling system, a liquid cooling system, an air-assisted liquid cooling system, or a water pump system, etc. The cooling system is only exemplified by an ice water cooling system here, and many embodiments of the water pump control device are illustrated as follows, but are not limited thereto.

[0045] For example, as Figure 1 shown, the first embodiment of the present application provides a water pump control device 10, including at least one sensor 11, a switching module 12, a power switch 13, and a water pump 14, for performing water pump control operations, such as controlling the power supply state of the water pump 14 according to relevant information of the sensor 11, but not limited thereto, and examples are illustrated as follows.

[0046] In some embodiments, as Figure 1 shown, for example, the sensor 11 can be a sensor with functions such as liquid leakage and water level detection, such as a water level detector and a leakage detector, etc., but not limited thereto. For example, it can also include an optoelectronic sensor, etc., to provide environmental substance (such as liquid) detection information to assist in water pump control operations.

[0047] In some embodiments, as Figure 1 shown, for example, at least one sensor 11 includes a leakage detector 11a, such as a liquid leakage detector. The leakage detector 11a is electrically connected to the switching module 12, and the leakage sensing signal of the leakage detector 11a can directly serve as the input signal source of the switching module 12, so that the switching module 12 generates a control signal according to the input signal. Thus, in the cooling system, it is possible to timely detect whether there is liquid leakage in the container or pipeline in the environment, so as to assist in judging whether it is necessary to stop the water pump from running.

[0048] It should be noted that since the leakage sensing signal belongs to the type of signal that needs to be urgently processed, once leakage is detected, it must be processed as soon as possible to prevent the expansion of abnormal system conditions. Therefore, directly transmitting the leakage sensing signal to the switching module, avoiding the leakage sensing signal still needing to be transmitted to the switching module via other electronic components (such as a controller), can prevent the leakage sensing signal from not being transmitted to the switching module due to factors such as failures or abnormalities of other electronic components (such as a controller), so as to ensure that the switching module can timely generate a control signal according to the leakage sensing signal.

[0049] In some embodiments, such as Figure 1 shown, for example, the switching module 12 can be a circuit with signal selection function, such as selecting one of multiple input signals as the output signal. For example, the switching module 12 includes a comparator and a control logic circuit (such as a logic circuit including "OR gate" and / or "AND gate"), and the comparator is electrically connected to the control logic circuit to use an input signal as the output signal or select one from multiple signals as the output signal according to a selection condition. For example, the switching module 12 is electrically connected to at least one of the sensors 11 and the power switch 13 to control the power switch 13 according to the information output by at least one of the sensors 11 (such as a signal representing a sensed value or a sensed state).

[0050] In some embodiments, such as Figure 1 shown, for example, the power switch 13 is a DC power switch. For example, a DC contactor is a device that uses a coil to generate a magnetic field to control electrical equipment, and a suitable device can be selected from components that can switch AC or DC circuits and can withstand a large current, such as an electromagnetic contactor or a solid-state relay, etc., but not limited thereto. The power switch 13 can also be configured as a circuit with a function of selectively transmitting power to selectively transmit a DC power, such as the DC power that drives the water pump 14 to generate power.

[0051] In some embodiments, such as Figure 1 shown, for example, the water pump 14 can be various water pumps formed by assembling a DC motor. The water pump 14 is electrically connected to the power switch 13, and the power switch 13 can be controlled by the switching module 12 to turn on or turn off the power required for the operation of the water pump 14. For example, the DC power continuously passes through the power switch 13 and is transmitted to the water pump 14, and the water pump 14 is driven by the DC power transmitted by the power switch 13 to operate and pump out liquid, such as water, but not limited thereto, and it can also be other liquids. For example, in a cooling system, the working liquid can also be other coolants or refrigerants, etc.

[0052] The following takes an example to illustrate the configuration form of the water pump control device of the first embodiment of the present application powered by dual power supplies, but not limited thereto.

[0053] For example, such as Figure 1As shown, the switching module 12 is electrically connected to a system power supply 15, and the system power supply 15 is configured to form a DC output terminal of a low-voltage DC power supply, for example, supplying DC 3.3 volts (V), but not limited thereto. The power switch 13 is electrically connected between the water pump 14 and a water pump power supply 16, and the water pump power supply 16 is configured to form a DC output terminal of a high-power DC power supply, for example, supplying DC 12 or 24 volts (V), but not limited thereto. In this example, the system power supply 15 and the water pump power supply 16 are different, and the power (such as DC power) of the system power supply 15 and the water pump power supply 16 can come from a main power supply 1A (such as forming an uninterruptible power supply (UPS) or a mains plug terminal, etc.), but not limited thereto. The switching module 12 is configured to control the power switch 13 according to the information output by at least one sensor 11. For example, the switching module 12 generates a control signal to connect or disconnect the power supply path between the water pump 14 and the water pump power supply 16.

[0054] As Figure 1 shown, when there is a specific situation (such as encountering an emergency power-off demand event of the water pump), the power switch 13 can be controlled to disconnect the power supply path between the water pump 14 and the water pump power supply 16, so that the water pump 14 stops operating. At this time, other components outside the water pump 14 (such as the sensor 11 and the switching module 12, etc.) can still be powered by the system power supply 15 and continue to operate, such as continuously performing environmental parameter monitoring operations and communication operations, but not limited thereto.

[0055] In some embodiments, as Figure 1 shown, the water pump control device 10 further includes a controller 17. The controller 17 is an electronic component with signal processing or control functions, such as a programmable logic controller (PLC) or a microprocessor (MCU), etc. For example, the system power supply 15, the controller 17, and the switching module 12 are connected in series in sequence. For example, the controller 17 is electrically connected to the system power supply 15 as a power supply source, the controller 17 is electrically connected to the switching module 12, and the controller 17 is configured to communicate with the switching module 12. For example, the controller 17 transmits signals to the switching module 12, such as sensing status signals, etc. The controller 17 can also receive the operating status signals from the switching module 12, such as normal or abnormal indication signals, to assist the controller 17 in executing internal control logic and issuing warning information according to the status signals of system abnormalities, such as specific forms of information (such as generating acoustic, optical, and / or electrical information, etc.), but not limited thereto. Thus, in the cooling system, a controller independent of the switching module can be used to perform normal operations, such as continuously performing signal conversion or communication operations, etc.

[0056] In some embodiments, as Figure 1As shown, for example, at least one sensor 11 further includes a water level detector 11b, such as a liquid position detector. The controller 17 is electrically connected to the water level detector 11b and the switching module 12. The controller 17 receives the water level sensing signal from the water level detector 11b, converts the water level sensing signal into a signal of a specific format, such as a binary quantization code value, to generate a water level status signal or a water level alarm signal, so as to output the information from the water level detector 11b to the switching module 12 as the input signal source of the switching module 12, and the switching module 12 generates a control signal according to the input signal. Thus, in the cooling system, it is possible to timely detect whether there is an over-high, over-low or other alarm situations of the container or pipeline liquid level in the environment, so as to assist in judging whether it is necessary to stop the operation of the water pump.

[0057] In the foregoing embodiment, the setting mode of the sensor 11 may be the mode in which the sensor 11, the controller 17 and the switching module 12 are connected in series in sequence, or the mode in which the sensor 11 is directly connected to the switching module 12.

[0058] In some embodiments, as Figure 1 shown, the controller 17 may also be electrically connected to the water pump 14. For example, the controller 17 is further configured to control the rotation speed of the water pump 14, such as regulating the rotation speed of the water pump 14 through a pulse width modulation signal (PWM), but not limited thereto. Thus, in the cooling system, it is possible to control the horizontal rotation speed in response to different cooling demand conditions, so as to facilitate the regulation of the flow or circulation state of the coolant or refrigerant.

[0059] In some embodiments, as Figure 1 shown, the water pump control device 10 further includes an emergency switch 18. For example, the emergency switch 18 may be a manual switch (such as a hardware button switch) or a remote control switch (such as a software interface switch). Here, only the emergency stop button applicable to public and industrial equipment is taken as an example of the emergency switch 18, but not limited thereto, to generate an emergency command (such as a water pump power-off command) according to a manual input action or a remote signal, so as to stop the operation of the water pump 14 in response to an emergency situation (such as the establishment of abnormal conditions). For example, if the water pump 14 cannot stop operating in time in response to abnormal situations such as liquid leakage or water level abnormality, the emergency switch 18 can also be used to generate a water pump power-off command to stop the operation of the water pump 14 as another abnormal protection mechanism.

[0060] For example, as Figure 1As shown, the emergency switch 18 is electrically connected to the switching module 12. The emergency switch 18 is electrically connected to the system power supply 15 and the switching module 12. The switching module 12 can be configured to control the power switch 13 according to the information output by at least one sensor 11 or the emergency switch 18. For example, the switching module 12 is configured to preferentially control the power switch 13 according to the information output by the emergency switch 18 (such as a water pump power-off command for cutting off the water pump power transmission path), so that the water pump 14 is connected to or disconnected from the water pump power supply 16, making the water pump 14 in an on or off state. The information output by the emergency switch 18 can also be regarded as a status signal of abnormal system operation. Thus, in response to an emergency stop situation of the water pump, such as the water pump being unable to stop operating in time in response to abnormal situations such as liquid leakage or abnormal water level, it can be ensured that the water pump can be powered off and stopped, so as to avoid expanding the scope of abnormal influence and improve the system safety of the water pump application.

[0061] Exemplarily, as Figure 1 shown, when the cooling system is normal or abnormal conditions are not established, such as to preventively shut down the cooling system in response to an expected power outage, the emergency switch 18 can also be manually actuated by personnel to issue an emergency command to stop the water pump from operating. It should be understood that regardless of whether the cooling system is normal or abnormal, the emergency command issued by the emergency switch 18 has the highest priority. That is, when the switching module 12 receives the emergency command issued by the emergency switch 18, the switching module 12 will immediately generate a control signal to drive the power switch 13 to cut off the power supply path between the water pump 14 and the water pump power supply 16. At the same time, other components other than the water pump 14 can continue to operate, such as generating or transmitting information.

[0062] Exemplarily, as Figure 1 shown, after the abnormal situation is eliminated, such as when the water level is normal, the leakage is eliminated, and the emergency switch is manually reset, etc., the switching module 12 can also output a control signal to control the power switch 13 to reconnect the power supply path between the water pump power supply 16 and the water pump 14, so that the water pump 14 is re-energized and restarted.

[0063] In some embodiments, as Figure 1As shown, the water pump control device 10 further includes a current isolator 19. For example, the current isolator 19 is a hot-swap module. For example, the hot-swap module can be configured to have surge current isolation and communication functions. The hot-swap module can be a general-purpose hot-pluggable hardware circuit, including integrated functions such as a voltage detector, a current detector, a power detector, and a communicator. The water pump power supply 16, the current isolator 19, the power switch 13, and the water pump 14 are connected in series in sequence. For example, the current isolator 19 is electrically connected to the water pump power supply 16 as a power supply source, and the current isolator 19 is electrically connected to the power switch 13 to isolate the surge current generated at the moment of re-powering and restarting after the water pump 14 is turned off and stopped, avoiding the transmission of the surge current to electronic components outside the water pump control device 10 and preventing the working state of electronic components outside the water pump control device 10 from being affected by the surge current and causing malfunction.

[0064] Thus, in response to an emergency, during the process of stopping and restarting the water pump, it is possible to avoid the system experiencing adverse effects derived from the emergency. In addition to reducing the repair cost after the emergency, it can also enhance the resilience of the system operation. Regardless of whether the water pump is in the on or off state, it does not affect the operation of the system outside the water pump. For example, the system can still perform communication and environmental monitoring to facilitate relevant operations by external personnel or remote systems.

[0065] In many embodiments of the water pump control device according to the first embodiment of the present application, two power supplies are used for power supply. The DC output terminal of a high-power DC power supply with a large current is used to supply power to the water pump and its series-connected electronic components (such as a power switch and a current isolator), and the DC output terminal of a low-voltage weak-current DC power supply is used to supply power to relevant components for control functions (such as a switching module, a controller, and an emergency switch). Thus, the power supply source of the relevant components for control functions is independent of the water pump and its series-connected electronic components. In response to an emergency stop situation of the water pump, such as liquid leakage or abnormal water level, the sensing signal from the sensor is directly or indirectly transmitted to the switching module as an input signal, so that the switching module generates a control signal according to the input signal to cut off the power supply source of the water pump, which can avoid expanding the scope of abnormal influence. At the same time, other components outside the water pump can still be powered and operate normally. For example, the controller can still perform data processing, communication, transmit sensing information, convey the system status, and issue alarm information, avoiding other control abnormal situations derived from the power-off of the water pump.

[0066] In many embodiments of the water pump control device according to the first embodiment of the present application, the control signal of the power supply source of the water pump is independently generated by the switching module, which can avoid the failure or abnormality of the controller from causing the inability to generate a signal for controlling the power supply source of the water pump, enhance the resilience of the control process of the power supply source of the water pump, improve the system safety of the water pump application, increase the responsiveness and tolerance to emergencies, and timely cut off the power of the water pump in response to an emergency stop situation (such as liquid leakage or abnormal water level), so that the water pump can effectively stop operating.

[0067] It should be noted that in this embodiment, regardless of whether the water pump is in the startup or shutdown state, other parts of the cooling system outside the water pump can still operate as normal (such as communicating with each other, etc.) to facilitate real-time monitoring by personnel.

[0068] In addition, in response to the water pump control requirements in different application scenarios, the water pump control device can also be configured in other forms, as exemplified below but not limited thereto.

[0069] For example, as Figure 1 shown, the second embodiment of the present application provides a water pump control device 10'. In the second embodiment, the water pump control device 10' includes an emergency switch 18', a switching module 12', a power switch 13' and a water pump 14' for performing water pump control operations, such as controlling the power supply state of the water pump 14' according to the relevant information generated by the emergency switch 18', but not limited thereto, as exemplified below.

[0070] In the second embodiment, as Figure 1 shown, the switching module 12' is electrically connected to the emergency switch 18' and the power switch 13', and the power switch 13' is electrically connected to the water pump 14'. For the other implementation manners of the emergency switch 18', switching module 12', power switch 13' and water pump 14' in the second embodiment, reference can be made to the relevant content of the emergency switch 18, switching module 12, power switch 13 and water pump 14 in the first embodiment, which will not be elaborated herein.

[0071] In the second embodiment, as Figure 1 shown, the emergency switch 18', the switching module 12' and a system power supply 15' are sequentially connected in series, and the power switch 13' is electrically connected between the water pump 14' and a water pump power supply 16'. The switching module 12' is configured to control the power switch 13' according to the information output by the emergency switch 18' to connect or disconnect the power supply path between the water pump 14' and the water pump power supply 16'. For other implementation manners of the system power supply 15' and the water pump power supply 16' in the second embodiment, reference can be made to the relevant content of the system power supply 15 and the water pump power supply 16 in the first embodiment, which will not be elaborated herein.

[0072] In the second embodiment, as Figure 1As shown, the water pump control device 10' may further include a controller 17' and a current isolator 19'. For example, the system power supply 15', the controller 17', the switching module 12' and the emergency switch 18' are connected in series in sequence, and the controller 17' is electrically connected to the switching module 12' and the water pump 14'. The water pump power supply 16', the current isolator 19', the power switch 13' and the water pump 14' are connected in series in sequence, and the current isolator 19' is electrically connected to the power switch 13'. For other implementation manners of the controller 17' and the current isolator 19' in the second embodiment, reference may be made to the relevant content of the controller 17 and the current isolator 19 in the first embodiment, which will not be elaborated herein.

[0073] In many embodiments of the water pump control device according to the second embodiment of the present application, two power supplies are used for power supply. The DC output terminal of a high-power DC power supply with a large current is used to supply power to the water pump and its series-connected electronic components (such as a power switch and a current isolator), and the DC output terminal of a low-voltage weak-current DC power supply is used to supply power to the relevant components for control functions (such as a switching module, a controller and an emergency switch). Thus, the power supply source of the relevant components for control functions is independent of the water pump and its series-connected electronic components. In response to an emergency stop situation of the water pump, for example, an emergency command (such as a water pump power-off command) is issued by a person or a machine via the emergency switch, and an emergency command-derived signal from the emergency switch is transmitted to the switching module as an input signal, so that the switching module generates a control signal according to the input signal to cut off the power supply source of the water pump. The switching module generates a control signal according to the input signal to cut off the power supply source of the water pump, which can avoid expanding the scope of abnormal influence. At the same time, other components other than the water pump can still be powered and operate normally, avoiding other control abnormal situations derived from the power-off of the water pump.

[0074] In many embodiments of the water pump control device according to the second embodiment of the present application, the control signal of the power supply source of the water pump is independently generated by the switching module, which can avoid the failure or abnormality of the controller from causing the inability to generate a signal for controlling the power supply source of the water pump, improve the toughness of the control process of the power supply source of the water pump, enhance the system safety of the water pump application, increase the responsiveness and tolerance to emergency accidents, and timely respond to an emergency stop situation (such as an emergency command issued by the emergency switch) to cut off the power of the water pump, so that the water pump can effectively stop running.

[0075] It should be noted that in this embodiment, regardless of whether the water pump is in the starting or closing state, other parts of the cooling system other than the water pump can still operate normally (such as mutual communication, etc.) to facilitate real-time monitoring by personnel.

[0076] Specifically, an implementation solution of the water pump control device with the above configuration is illustrated by way of example. As Figure 2As shown, the many configuration components of a water pump control device sample 20 include several sensors 21, a switching module 22, a power switch 23, a water pump 24, a system power supply 25, a water pump power supply 26, a controller 27, an emergency switch 28, a current isolator 29, and a main power supply 2A (such as a UPS, an uninterruptible power system). The several sensors 21 include, for example, a leakage detector 21a that can be configured at the bottom of a water tank and a water level detector 21b that can be installed in the water tank. The switching module 22, the power switch 23, the water pump 24, the system power supply 25, the water pump power supply 26, the controller 27, the emergency switch 28, the current isolator 29, and the main power supply 2A can be appropriately arranged on a circuit board according to actual needs to further form a hardware module. In this example, only the first embodiment is used as an example, but it is not limited thereto. The relevant description can also be applied to the second embodiment. For example, the implementation schemes of the sensors 21, the switching module 22, the power switch 23, the water pump 24, the system power supply 25, the water pump power supply 26, the controller 27, the emergency switch 18, the current isolator 19, and the main power supply 2A are the same as or similar to those of the sensors 11, the switching module 12, the power switch 13, the water pump 14, the system power supply 15, the water pump power supply 16, the controller 17, the emergency switch 18, the current isolator 19, and the main power supply 1A in the above embodiment. Thus, the many configuration components of the water pump control device can be integrated into a single modular product to facilitate product storage, transportation, assembly, and maintenance operations.

[0077] Although the present application has disclosed the preferred embodiments, it is not intended to limit the present application. Any person of ordinary skill in the art can make various changes and modifications without departing from the spirit and scope of the present application. Therefore, the protection scope of the present application shall be subject to that defined by the appended claims for patent.

Claims

1. A water pump control device, wherein: include: A sensor, a switching module, electrically connected to the sensor, a power switch electrically connected to the switching module, and a water pump electrically connected to the power switch; Among them, the power switch is electrically connected between the water pump and a water pump power supply, the switching module is electrically connected to a system power supply, the water pump power supply is different from the system power supply, and the switching module is configured to control the power switch based on the information output by the sensor, so that the power switch connects or cuts off the power supply path between the water pump and the water pump power supply.

2. The water pump control device according to claim 1, wherein: It also includes an emergency switch connected to the switching module. The switching module is configured to control the power switch according to information output by the sensor or the emergency switch to connect or disconnect the water pump power supply.

3. The water pump control device according to claim 2, wherein: The emergency switch is a manual switch or a remote control switch.

4. The water pump control device according to claim 2, wherein: The switching module is configured to control the power switch based on the information output by the emergency switch to connect or disconnect the water pump power supply.

5. The water pump control device according to claim 1 or 2, wherein: The switching module is a detection control circuit, wherein the detection control circuit includes a comparator and a control logic circuit, and the comparator is electrically connected to the control logic circuit.

6. The water pump control device according to claim 1 or 2, wherein: The power switch is a DC power switch.

7. The water pump control device according to claim 6, wherein: The DC power switch is an electromagnetic contactor or a solid-state relay.

8. The water pump control device according to claim 1 or 2, wherein: It also includes a current isolator. The water pump power supply, the current isolator, the power switch and the water pump are connected in series in sequence.

9. The water pump control device according to claim 8, wherein: The current isolator is a hot-plug module configured to have a surge current isolation function.

10. The water pump control device according to claim 1 or 2, wherein: It also includes a controller. The system power supply, the controller and the switching module are connected in series in sequence.

11. The water pump control device according to claim 10, wherein: The sensor, the controller and the switching module are connected in series in sequence.

12. The water pump control device according to claim 1 or 2, wherein: The sensor is directly connected to the switching module.

13. The water pump control device according to claim 1 or 2, wherein: The sensor is a leakage detector or a water level detector.

14. The water pump control device according to claim 1 or 2, wherein: The system power supply is a DC output end of a weak DC power supply, and the water pump power supply is a DC output end of a high-power DC power supply.

15. A water pump control device, wherein: include:

1. Emergency switch; a switching module, electrically connected to the emergency switch; a power switch electrically connected to the switching module; and a water pump electrically connected to the power switch; Among them, the emergency switch, the switching module and a system power supply are connected in series in sequence, the power switch is electrically connected between the water pump and a water pump power supply, and the switching module is configured to control the power switch according to the information output by the emergency switch, so that the power switch connects or cuts off the power supply path between the water pump and the water pump power supply.

16. The water pump control device according to claim 15, wherein: The switching module is a detection control circuit, wherein the detection control circuit includes a comparator and a control logic circuit, and the comparator is electrically connected to the control logic circuit.

17. The water pump control device according to claim 15, wherein: It also includes a current isolator. The water pump power supply, the current isolator, the power switch and the water pump are connected in series in sequence.

18. The water pump control device according to claim 17, wherein: The current isolator is a hot-plug module configured to have a surge current isolation function.

19. The water pump control device according to claim 15, wherein: It also includes a controller, and the controller, the switching module and the emergency switch are connected in series in sequence.

20. The water pump control device according to claim 15, wherein: The system power supply is a DC output end of a weak DC power supply, and the water pump power supply is a DC output end of a high-power DC power supply.

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