A water pump controller

Abstract

The utility model belongs to controller technical field, especially point to a kind of water pump controller, including magnet, shell and the control panel being arranged in shell, the control panel includes circuit board, single-chip microcontroller and hall sensor are equipped on the circuit board, hall sensor controls the on-off between single-chip microcontroller and battery by induction magnet, PNP triode is equipped on the circuit board, the anode of PNP triode is electrically connected with battery, the base of PNP triode is electrically connected with the hall sensor, the collector of PNP triode is electrically connected with the single-chip microcontroller. The utility model does not need to open hole on shell, water is not easy to enter in shell, component is not easy to damage, effectively prolongs the service life of water pump controller.

Description

Technical Field

[0001] This utility model belongs to the field of controller technology, and specifically refers to a water pump controller. Background Technology

[0002] A water pump controller is used to control the start and stop of the water pump motor. It is usually located above the water pump and includes a housing and a control board inside the housing.

[0003] Existing water pump controllers typically have a switch button to control the connection between the battery and the control board. The switch button extends out of the housing for the user to press. However, this design has the drawback of requiring a mounting hole in the housing for the switch button to extend out. Water can easily enter between the switch button and the mounting hole, damaging the components on the control board and ultimately causing damage to the water pump controller. Utility Model Content

[0004] The purpose of this invention is to provide a water pump controller that does not require openings in the housing, prevents water from entering the housing, reduces the risk of damage to components, and effectively extends the service life of the water pump controller.

[0005] This utility model is implemented as follows: A water pump controller includes a magnet, a housing, and a control board disposed within the housing. The control board includes a circuit board on which a microcontroller and a Hall sensor are mounted. The Hall sensor controls the connection between the microcontroller and a battery by sensing the magnet. A PNP transistor is mounted on the circuit board. The emitter of the PNP transistor is electrically connected to the positive terminal of the battery, the base of the PNP transistor is electrically connected to the Hall sensor, and the collector of the PNP transistor is electrically connected to the microcontroller.

[0006] In the aforementioned water pump controller, the battery is a lithium battery.

[0007] In one of the aforementioned water pump controllers, the magnet is a neodymium iron boron magnet.

[0008] In the aforementioned water pump controller, a handle is provided on the top of the housing, and a through hole is provided on the magnet for a hanging rope to pass through, so that the magnet is hung on the handle by the hanging rope.

[0009] In the aforementioned water pump controller, both the water pump motor and the battery are housed inside the water pump housing, and the outer casing is located above the water pump housing.

[0010] The aforementioned water pump controller also includes a remote control that is wirelessly connected to the control board. The magnet is a thin sheet type and is attached to the back of the remote control.

[0011] In the aforementioned water pump controller, the wireless connection can be Bluetooth, radio frequency, or infrared remote control.

[0012] In the aforementioned water pump controller, the magnet can be attached to the back of the remote control using double-sided tape or glue.

[0013] In the aforementioned water pump controller, a linear regulator is provided between the PNP transistor and the microcontroller. The collector of the PNP transistor is electrically connected to the input terminal of the linear regulator, and the output terminal of the linear regulator is electrically connected to the microcontroller.

[0014] In the aforementioned water pump controller, the control board is encapsulated in a housing using silicone potting compound, and the housing is made of a transparent material.

[0015] In the aforementioned water pump controller, an NMOS transistor is provided on the circuit board. The electrical connection between the water pump motor and the battery is controlled by the NMOS transistor, which is also electrically connected to the microcontroller.

[0016] In the aforementioned water pump controller, a relay is provided below the circuit board. The electrical connection between the water pump motor and the battery is controlled by the relay. The coil of the relay is electrically connected to the microcontroller, and the contacts of the relay are electrically connected between the water pump motor and the battery.

[0017] In the aforementioned water pump controller, the relay and control board are encapsulated in a housing using silicone potting compound.

[0018] The outstanding advantages of this utility model compared to the prior art are: 1. This utility model uses a Hall sensor to sense a magnet to control the connection and disconnection between the microcontroller and the battery. It is a non-contact sensing method, which eliminates the need for holes in the casing, prevents water from entering the casing, and reduces the risk of damage to components, thus effectively extending the service life of the water pump controller.

[0019] 2. The magnet of this utility model is provided with a through hole for the hanging rope to pass through. The magnet is hung on the handle by the hanging rope, which makes it easy to turn the water pump on and off, and at the same time can effectively prevent the magnet from being lost.

[0020] 3. The magnet of this utility model is a thin sheet and is attached to the back of the remote control, making it easy to store and retrieve the magnet. Attached Figure Description

[0021] Figure 1 This is a perspective view of the outer shell of Embodiment 1 of this utility model.

[0022] Figure 2 This is a front view of the magnet in Embodiment 1 of this utility model.

[0023] Figure 3This is a front view of the circuit board, microcontroller, and Hall sensor of Embodiment 1 of this utility model.

[0024] Figure 4 This is a partial circuit diagram of Embodiment 1 of this utility model.

[0025] Figure 5 This is another part of the circuit diagram of Embodiment 1 of this utility model.

[0026] Figure 6 This is a rear view of the remote control according to Embodiment 2 of this utility model.

[0027] Figure 7 This is a circuit diagram of Embodiment 3 of this utility model.

[0028] Reference numerals: 1. Magnet; 2. Housing; 3. Circuit board; 4. Microcontroller; 5. Hall sensor; 6. Handle; 7. Hanging rope; 8. Remote control. Detailed Implementation

[0029] The present invention will be further described below with reference to specific embodiments. See also: Figure 1 —7: Example 1: See Figure 1-5 : A water pump controller includes a magnet 1, a housing 2, and a control board disposed within the housing 2. The control board includes a circuit board 3, on which a microcontroller 4 and a Hall sensor 5 are mounted. The Hall sensor 5 controls the connection between the microcontroller 4 and a battery by sensing the magnet 1. A PNP transistor is mounted on the circuit board 3. The emitter of the PNP transistor is electrically connected to the positive terminal of the battery, the base of the PNP transistor is electrically connected to the Hall sensor 5, and the collector of the PNP transistor is electrically connected to the microcontroller 4.

[0030] like Figure 1-5 As shown, when the water pump is off, magnet 1 is placed at the position corresponding to Hall sensor 5 outside the housing 2. Hall sensor 5 senses magnet 1, connects the microcontroller 4 to the battery, and the water pump starts. Magnet 1 can then be removed. When the water pump starts, magnet 1 is placed at the position corresponding to Hall sensor 5 outside the housing 2. Hall sensor 5 senses magnet 1, disconnects the microcontroller 4 from the battery, and the water pump stops. Magnet 1 can then be removed.

[0031] Hall sensor 5 transmits signals to PNP transistor, which then turns the connection between the battery's positive terminal and microcontroller 4 on or off, thus controlling the on / off state of the connection between microcontroller 4 and the battery. The PNP transistor enables the small current transmitted by Hall sensor 5 to control the on / off state of a large current, resulting in a simple structure, stable operation, and high reliability.

[0032] The mode of the Hall sensor 5 controlling the on / off state of the microcontroller 4 and the battery is set according to the program. It can be that the Hall sensor 5 executes as soon as it senses the magnet 1, that is, the water pump is turned on or off as soon as the magnet 1 is placed; or it can be that the Hall sensor 5 executes after sensing the magnet 1 for three seconds, that is, the water pump is turned on or off after the magnet 1 is placed on the outer casing 2 for three seconds.

[0033] This invention uses a Hall sensor 5 to sense a magnet 1 to control the connection and disconnection between the microcontroller 4 and the battery. It is a non-contact sensing method, which eliminates the need for openings in the outer casing 2, prevents water from entering the casing 2, and minimizes damage to components, effectively extending the service life of the water pump controller.

[0034] The battery powers the control board and the water pump motor.

[0035] Preferably, the battery is a lithium battery, which can be recharged and reused.

[0036] Preferably, the magnet 1 is a neodymium iron boron magnet, which has strong magnetism and is easy for the Hall sensor 5 to detect.

[0037] To facilitate the opening and closing of the water pump and to prevent its loss, a handle 6 is provided on the top of the outer casing 2. The magnet 1 has a through hole for the hanging rope 7 to pass through, and the magnet 1 is hung on the handle 6 by the hanging rope 7.

[0038] Furthermore, the water pump motor and battery are both housed inside the water pump housing, and the outer casing 2 is located above the water pump housing.

[0039] Furthermore, a diode is provided between the emitter of the PNP transistor and the positive terminal of the battery, and a linear regulator is provided between the PNP transistor and the microcontroller 4. The collector of the PNP transistor is electrically connected to the input terminal of the linear regulator, and the output terminal of the linear regulator is electrically connected to the microcontroller 4. The linear regulator stably reduces the higher DC input voltage (VCC) and outputs a fixed, clean +5V DC voltage.

[0040] The method of controlling the water pump motor and battery connection via a single-chip microcomputer: such as Figure 4 , 5 As shown, the circuit board 3 is equipped with an NMOS transistor, which controls the on / off connection between the water pump motor and the battery. The NMOS transistor is also electrically connected to the microcontroller 4. The microcontroller 4 can also control the speed of the water pump motor through the NMOS transistor.

[0041] To prevent water ingress from damaging the components of the control board, the control board is encapsulated in a housing 2 using silicone potting compound. The housing 2 is made of a transparent material, which allows the user to easily see the specific location of the Hall sensor 5 and place it correctly in the position of the magnet 1 during operation so that the Hall sensor 5 can better sense the magnet 1.

[0042] In the appendix Figure 4 , 5 In the diagram, U1 represents Hall sensor 5, U5 represents linear regulator, Q17 represents PNP transistor, Q7 represents NMOS transistor, D3 represents diode, and MOTOR- represents negative terminal of water pump motor.

[0043] In this embodiment, the microcontroller 4 is model 011A, the Hall sensor 5 is model A3144E, the PNP transistor is model SS8550, the linear regulator is model 78L05, the diode is model FR107, and the NMOS transistor is model HY3410.

[0044] The control board of this utility model is equipped with an automatic power-off function. When the microcontroller 4 is electrically connected to the battery, but the water pump motor is disconnected from the battery, that is, when the water pump is in standby mode for more than 3 minutes, the microcontroller 4 will automatically disconnect from the battery and needs to be started by magnet 1.

[0045] Example 2: See Figure 6 : This embodiment is basically the same as the structure of the first embodiment above. The main difference is that it also includes a remote control 8 that is wirelessly connected to the control board. The magnet 1 is a thin sheet and is attached to the back of the remote control 8 for easy storage and retrieval.

[0046] Furthermore, the wireless connection can be Bluetooth, radio frequency, or infrared remote control. In this embodiment, the control board and the remote controller 8 are connected via radio frequency.

[0047] The magnet 1 can be attached to the back of the remote control 8 using either double-sided tape or glue. In this embodiment, the magnet 1 can be attached to the back of the remote control 8 using 3M double-sided tape.

[0048] The remote control 8 can control the on / off state of the water pump motor and the battery, as well as the speed of the water pump motor. However, it cannot control the electrical connection between the microcontroller 4 and the battery. That is, after the remote control 8 turns off the water pump motor, the water pump controller is still in standby mode. It is necessary to disconnect the electrical connection between the microcontroller 4 and the battery through the magnet 1.

[0049] Example 3: See Figure 7 : This embodiment is basically the same as the structure of the first embodiment above. The main difference is that: a relay is provided below the circuit board 3, and the electrical connection between the water pump motor and the battery is controlled by the relay. The coil of the relay is electrically connected to the microcontroller 4, and the contacts of the relay are electrically connected between the water pump motor and the battery.

[0050] Furthermore, the relay is located below the circuit board 3, and the relay and the control board are encapsulated in the housing 2 with silicone potting compound.

[0051] In the appendix Figure 7 In the diagram, U1 represents Hall sensor 5, U5 represents linear regulator, Q17 represents PNP transistor, K1 represents relay, and GND- represents negative terminal of water pump motor.

[0052] In this embodiment, the microcontroller 4 is model 011A, the Hall sensor 5 is model A3144E, the PNP transistor is model SS8550, the linear regulator is model 78L05, and the relay is a single-pole single-throw relay.

[0053] The above embodiments are only one of the preferred embodiments of this utility model and are not intended to limit the scope of implementation of this utility model. Therefore, all equivalent changes made in accordance with the shape, structure and principle of this utility model should be covered within the protection scope of this utility model.

Claims

1. A water pump controller, characterized in that: The device includes a magnet (1), a housing (2), and a control board disposed inside the housing (2). The control board includes a circuit board (3). The circuit board (3) is equipped with a microcontroller (4) and a Hall sensor (5). The Hall sensor (5) controls the connection and disconnection between the microcontroller (4) and the battery by sensing the magnet (1). The circuit board (3) is equipped with a PNP transistor. The emitter of the PNP transistor is electrically connected to the positive terminal of the battery. The base of the PNP transistor is electrically connected to the Hall sensor (5). The collector of the PNP transistor is electrically connected to the microcontroller (4).

2. A water pump controller according to claim 1, characterized in that: The outer shell (2) is provided with a handle (6) on the top, and the magnet (1) is provided with a through hole for the hanging rope (7) to pass through. The magnet (1) is hung on the handle (6) by the hanging rope (7).

3. A water pump controller according to claim 1, characterized in that: It also includes a remote control (8) that is wirelessly connected to the control board, wherein the magnet (1) is a thin sheet and is attached to the back of the remote control (8).

4. A water pump controller according to claim 1, characterized in that: The circuit board (3) is equipped with an NMOS transistor. The electrical connection between the water pump motor and the battery is controlled by the NMOS transistor. The NMOS transistor is electrically connected to the microcontroller (4).

5. A water pump controller according to claim 1, characterized in that: A relay is provided below the circuit board (3). The electrical connection between the water pump motor and the battery is controlled by the relay. The coil of the relay is electrically connected to the microcontroller (4). The contacts of the relay are electrically connected between the water pump motor and the battery.

6. A water pump controller according to claim 1, characterized in that: The control board is encapsulated in a housing (2) using silicone potting compound, and the housing (2) is made of a transparent material.

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