Water detecting pumping system and electric water pump

Abstract

The application discloses a water detection water pumping system and an electric water pump, which comprises an integrated charging management controller, a main control chip with multiple programmable IO ports and NMOS power tubes, and a water pumping pump, a charging USB port, a battery, a key, a waterproof detection module and the water pumping pump, which are connected with the main control chip respectively. The water pumping pump is used for working at a preset time and power under the control of a control signal output by the main control chip. The key is used for changing the level state thereof under the interaction of external force and inputting to the main control chip. The waterproof detection module comprises multiple detection ports which are not conductive in a normal state and are used for changing the level state output to the main control chip when water enters, so that the main control chip changes the on-off state thereof according to the level state of the waterproof detection module. The application can effectively detect the water entering problem generated in the use process of the water pump. When water enters the mainboard, the electric water pump is automatically powered off, so that the chip and the mainboard are protected.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of electrical appliances, in particular to a water pumping system capable of detecting water and an electric water pump. BACKGROUND

[0002] With the rapid development of society, intelligent products are also constantly upgrading. With the continuous updating of social needs, the corresponding products are also being developed. The appearance of barrel water has changed people's long-standing drinking water habits. Among the main types of drinking water for people at present, barrel water occupies a large proportion. Barrel water and drinking water machines have entered thousands of households, bringing convenience and fashion to people.

[0003] Most of the barrel water sold and used on the market is used with a drinking water machine. If a common split drinking water machine is used, there will be the disadvantages of difficulty in replacing water. If a three-dimensional drinking water machine is used, there will be the disadvantages of slow water filling path and slow water output. If a hand-pressed water pump is used, there will be the disadvantages of laboriousness and low water output efficiency. In addition to these, there is also the problem of high cost caused by the use of a drinking water machine. Therefore, an electric water pump emerges as the times require. However, the electric water pump on the market also has certain deficiencies. For example, if the electric water pump is filled with water and still operates, it will cause damage to the components and result in the inability to use the water pump. In addition, there are the deficiencies of high production cost and great development difficulty. SUMMARY

[0004] In view of the above technical problems, the present application provides a water pumping system capable of detecting water and an electric water pump to solve the above-mentioned problems.

[0005] Other characteristics and advantages of the present application will become apparent from the following detailed description, or will be learned by practice of the present application.

[0006] According to an aspect of the present application, a water pumping system capable of detecting water is disclosed, which comprises an integrated charge management controller, a master control chip with a plurality of programmable IO ports, NMOS power tubes, and a waterproof detection module, a battery, a key, and a water pump connected to the master control chip respectively, wherein: the charging USB port is used to provide power supply for the master control chip from an external power source, so that the master control chip charges the battery at a set current; the water pump is also connected to the battery for receiving power supply from the battery and working at a preset time and power under the control of the control signal output by the master control chip; the key is used to change its level state under the interaction of external force and input to the master control chip, so that the master control chip changes the control signal according to the level state of the key; the waterproof detection module comprises a plurality of detection ports which are not conductive in normal state and are used to change the level state output to the master control chip when water enters, so that the master control chip changes its on-off state according to the level state of the waterproof detection module.

[0007] Further, the system further comprises a charging indicator light and a working indicator light, wherein: the charging indicator light is used to light up when the charging USB port works; the working indicator light is connected to the programmable IO port of the master control chip and is used to indicate the working state of the water pump under the control of the master control chip.

[0008] Further, the power output end of the charging USB port is connected to the power input end of the master control chip, and the charging indicator light is connected to one of the programmable IO ports of the master control chip.

[0009] Further, a first current limiting resistor is further arranged between the charging indicator light and the master control chip, one end of a first filter capacitor is commonly connected between the power output end of the charging USB port and the power input end and one of the programmable IO ports of the master control chip, and the other end of the first filter capacitor is grounded.

[0010] Further, the water pump is connected in parallel with a rectifier diode and a second filter capacitor, the positive electrode of the rectifier diode is connected to the NMOS power tube of the master control chip, and the negative electrode of the rectifier diode is connected to the battery.

[0011] Further, one end of a plurality of the detection ports of the waterproof detection module is commonly connected to the programmable IO port of the master control chip and a third filter capacitor, the third filter capacitor is connected in parallel with a voltage dividing resistor and grounded, and the other end of a plurality of the detection ports is commonly connected to a third current limiting resistor, and the third current limiting resistor is connected to the battery.

[0012] According to another aspect of the present application, an electric water pump is disclosed, comprising the system as described above, and comprising a housing, a water inlet pipe, and a water outlet pipe, the system is arranged in the housing, the water inlet and outlet of the water pump are communicated with the water inlet pipe and the water outlet pipe respectively, the bottom of the housing is provided with a threaded port matched with a water bucket, and the water pump is arranged separately from the master control chip, the charging USB port, the battery, the key, and the waterproof detection module.

[0013] Further, the master control chip, the charging USB port, and the waterproof detection module are arranged on a mainboard, the key is exposed outside the housing, and the detection ports of the waterproof detection module are distributed at any position of the mainboard.

[0014] The technical solution of the present application has the following beneficial effects:

[0015] 1. The basic function of the electric water pump can be realized by using one master control chip, thereby effectively saving cost and development time.

[0016] 2. The water inlet problem generated during the use of the water pump can be effectively detected, and when water inlet is detected on the mainboard, the electric water pump will automatically shut down, thereby achieving the effect of protecting the chip and the mainboard. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a circuit schematic diagram of the water detection water pump system in the embodiment of the present application;

[0018] Figure 2 It is a circuit schematic diagram of the battery in the embodiment of the present application;

[0019] Figure 3 It is a circuit schematic diagram of the key in the embodiment of the present application;

[0020] Figure 4 It is a structural schematic diagram of the electric water pump in the embodiment of the present application.

[0021] Among them, the reference signs: 1, master control chip; 2, charging USB port; 3, battery; 4, key; 5, waterproof detection module; 51, detection port; 6, water pump; 7, housing; 8, water outlet. DETAILED DESCRIPTION

[0022] The technical solution of the present application will be described clearly and completely in combination with the drawings. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the protection scope of the present application.

[0023] As Figures 1-3As shown, the embodiment of the present specification provides a water pumping system capable of detecting water, which comprises a main control chip 1 integrated with a charging management controller, a plurality of programmable IO ports, and NMOS power tubes, and a water pumping system comprising a charging USB port 2, a battery 3, a key 4, a waterproof detection module 5 and a water pumping pump 6 connected with the main control chip 1 respectively, wherein: the charging USB port 2 is used for external power supply to provide power supply for the main control chip 1, so that the main control chip 1 charges the battery 3 with a set current; the water pumping pump 6 is also connected with the battery 3, used for receiving power supply of the battery 3, and used for working with a preset time and power under the control of the control signal output by the main control chip 1; the key 4 is used for changing the level state thereof under the interaction of external force and inputting to the main control chip 1, so that the main control chip 1 changes the control signal according to the level state of the key 4; the waterproof detection module 5 comprises a plurality of detection ports 51 not conducting in a normal state, the detection port 51 is used for conducting to change the level state output to the main control chip 1 when water enters, so that the main control chip 1 changes the on-off state thereof according to the level state of the waterproof detection module 5.

[0024] In the main control chip 1, the plurality of programmable IO ports can be provided by the built-in MCU, the charging management controller, the MCU and the NMOS are packaged together, which is represented as an OTP type MCU controller. Figure 1 As shown, the main control chip 1 is designed, wherein each pin is defined as follows: 2-pin BAT is connected with the positive electrode of the battery 3; 1-pin VIN is a charging 5V input port of the charging USB port 2, the charging USB port 2 is connected to the 1-pin VIN charging of the main control chip 1, the capacitor C1 and the capacitor C2 are set as 4.7uF filter capacitors, which play a role of anti-interference during charging, 3, 4, 5, 6 and 7 pins are programmable IO ports, which can be set according to different requirements. 8-pin GND is connected with the ground, 9-pin is VSS power ground, 10-pin DR is the drain end of the NMOS tube. Among them, cooperating with the charging USB port 2, the battery 3, the key 4, the waterproof detection module 5 and the water pumping pump 6, 5-pin PB2 is a PWM output IO, which can be set as an output mode; 6-pin PB1 is a key 4 control IO, which can be set as an input pull-up mode; 7-pin PB0 is a waterproof detection control IO, which can be set as an input pull-up mode.

[0025] As shown in the figure, Figure 2 VCC_BAT is the positive electrode of the battery 3.

[0026] As shown in the figure, Figure 3 The key 4 can adopt a common physical key, which is connected to the 6-pin IO port PB3 of the main control chip 1 and set as an input pull-up mode, which is in a high level in a normal state and is low level when the key 4 is pressed; KEY1 is the on-off key 4, which is short pressed to turn on and off, and the key 4 can also be normally triggered for use when charging. When the water entering state is detected, the key 4 is invalid.

[0027] In an embodiment, the system can further comprise a charging indicator light D1 and a working indicator light D2, wherein: the charging indicator light D1 is used to light up when the charging USB port 2 is working; the working indicator light D2 is connected with the programmable IO port of the master control chip 1, and is used to indicate the working state of the water pump 6 under the control of the master control chip 1.

[0028] Specifically, the power output end of the charging USB port 2 is connected with the power input end of the master control chip 1, and the charging indicator light D1 is connected with one of the programmable IO ports of the master control chip 1 and the power output end of the charging USB port 2. A first current-limiting resistor R2 is further arranged between the charging indicator light D1 and the master control chip 1, and one end of a first filter capacitor C1 is commonly connected in parallel between the power output end of the charging USB port 2, the power input end of the master control chip 1 and one of the programmable IO ports, and the other end of the first filter capacitor C1 is grounded. Specifically, the working indicator light D2 is connected with the 3-pin PB4 of the master control chip 1, and can be set as an LED light control IO, which is set as an output mode; the 4-pin PB3 of the master control chip 1 is a charging indicator light D1 control IO, which is set as an output mode. The first current-limiting resistor R2 is used to control the brightness of the charging indicator light D1, and the brightness of the charging indicator light D1 can be adjusted by changing the resistance value of the first current-limiting resistor R2. The working indicator light D2 is provided with a second current-limiting resistor R4 between the working indicator light D2 and the ground, and the second current-limiting resistor R4 is used to control the brightness of the working indicator light D2, and the brightness of the working indicator light D2 can be adjusted by changing the resistance. The brightness of the LED light is controlled by controlling the high and low levels of the 3-pin of the master control chip 1.

[0029] The charging indicator light D1 and the working indicator light D2 are simply set by the circuit, and the user can know whether the current is charging or in the working state.

[0030] As known from the above, the display mode of the charging indicator light D1 can be designed. The charging management controller in the master control chip 1 defaults to high level, and is set to low level when charging, that is, when the software reads the low level of the pin state, it indicates that it is charging, and when it is full, it indicates high level. Therefore, the charging prompt light and the full prompt light can be set according to the state of the IO port. The charging prompt light control IO is the 4-pin PB3, which is set as an output mode, and is high level when not charging. When charging, the IO becomes low level, the charging indicator light D1 displays in a certain color, and when not charging or when full, the IO is high level, and the charging indicator light D1 does not light up.

[0031] In an embodiment, the water pump 6 is connected in parallel with a rectifier diode D3 and a second filter capacitor C4. The anode of the rectifier diode D3 is connected to the drain of the NMOS power tube of the master control chip 1, and the cathode is connected to the battery 3.

[0032] Wherein, the rectifier diode D3 is one-way conduction, used to increase power, the second filter capacitor C4 is used to filter out the AC component, making the output DC more stable, the water pump 6 works more stably. The water pump 6 can be programmed to control through the main control chip 1, and the strength of pumping can be controlled by setting the duty cycle of PWM.

[0033] In software, the pumping time can be programmed at development time, when running to the set pumping time, the water pump 6 will automatically stop working after the control signal is output to the set time, and enter the shutdown state. The pumping time can be set by the program, and can be set according to the demand.

[0034] In an embodiment, one end of the plurality of detection ports 51 of the waterproof detection module 5 is commonly connected to the programmable IO port of the main control chip 1 and the third filter capacitor C3, the third filter capacitor C3 is connected in parallel with the voltage dividing resistor R6 and grounded, and the other end of the plurality of detection ports 51 is commonly connected to the third current limiting resistor R5, and the third current limiting resistor R5 is connected with the battery 3.

[0035] Wherein, please continue to refer to Figure 1 When detecting that the detection port 51 has water, a signal will be sent to the main control chip 1 to change the state of the corresponding 7-pin PB0-IO, and then the main control chip 1 will determine that it is in a water-in state, at which time the water pump 6 will be shut down, and the button 4 will be disabled until it is detected that the detection port 51 has no water. The third filter capacitor C3 is a decoupling capacitor that can provide a stable power voltage and effectively change the level state of the 7-pin PB0-IO, and the third current limiting resistor R5 provides a stable current, and the voltage dividing resistor R6 is used to change the state of the 7-pin PB0-IO when water is detected.

[0036] In software, the 7-pin PB0 is set to low level under normal conditions, and is directly grounded GND. When there is water on the PCB board, BAT1-BAT2-BAT5 will be conducted with K1-K2-K3, at which time the level state of the 7-pin PB0 will be changed to high level due to conduction, at which time the main control chip 1 will determine that there is water on the PCB board, enter the shutdown state, and at the same time, the button 4 will be disabled until it is detected that the PBO-IO is low.

[0037] Based on the same idea, as Figure 4 shown, an electric water pump is disclosed, which comprises a system as described above, and a shell 7, a water inlet pipe, and a water outlet pipe. The system is arranged in the shell 7, the water inlet and outlet of the water pump 8 are respectively communicated with the water inlet pipe and the water outlet pipe, and the bottom of the shell 7 is provided with a threaded port matched with a water bucket. The water pump is isolated from the main control chip 1, the charging USB port 2, the battery 3, the button 4, and the waterproof detection module 5.

[0038] Among them, the main control chip 1, the charging USB port 2 and the waterproof detection module 5 are arranged on the mainboard, the key 4 is exposed outside the shell 7, and the detection port 51 of the waterproof detection module 5 is distributed at any position of the mainboard. In addition, at least one detection port 51 is located at a position adjacent to the water pump 6.

[0039] From the above embodiments, it is known that the application can realize the basic function of the electric water extractor by using one main control chip 1, which can effectively save the cost and development time. The water inlet problem generated during the use of the water extractor can be effectively detected, and when the mainboard is detected to be wet, the electric water extractor will automatically shut down, thereby achieving the protection of the chip and the mainboard.

[0040] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the application, and not to limit them; although the application has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the above embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the application. In addition, those skilled in the art can understand that although some of the embodiments described herein include certain features rather than others included in other embodiments, the combination of features of different embodiments means that it is within the scope of the application and forms different embodiments. For example, in the above claims, any one of the claimed embodiments can be used in any combination. The information disclosed in the background section is only intended to deepen the understanding of the overall background of the application, and should not be regarded as acknowledging or implying in any form that the information constitutes prior art known to those skilled in the art.

Claims

1. A water detectable pumping system, characterized by, The system comprises a main control chip with a charge management controller, a plurality of programmable IO ports, and NMOS power tubes, and a waterproof detection module connected with the main control chip, a battery, a pump, and a charging USB port. The charging USB port is used to provide power for the main control chip from an external power source, so that the main control chip charges the battery at a set current. The pump is also connected with the battery, and is used to receive power supply from the battery and work at a preset time and power under the control of the control signal output by the main control chip. The key is used to change its level state under the interaction of external force and input to the main control chip, so that the main control chip changes the control signal according to the level state of the key. The waterproof detection module comprises a plurality of detection ports which are not conductive in normal state and are used to change the level state output to the main control chip when water enters, so that the main control chip changes its on-off state according to the level state of the waterproof detection module. The pump is connected in parallel with a rectifier diode and a second filter capacitor, the positive electrode of the rectifier diode is connected to the NMOS power tube of the main control chip, and the negative electrode is connected to the battery. One end of the plurality of detection ports of the waterproof detection module is commonly connected to the programmable IO port of the main control chip and a third filter capacitor, the third filter capacitor is connected in parallel with a voltage dividing resistor and grounded, and the other end of the plurality of detection ports is commonly connected to a third current limiting resistor, and the third current limiting resistor is connected with the battery.

2. The water detectable pumping system of claim 1, wherein, The system further comprises a charging indicator light and a working indicator light. The charging indicator light is used to light up when the charging USB port works. The working indicator light is connected with the programmable IO port of the main control chip, and is used to indicate the working state of the pump under the control of the main control chip.

3. The water detectable pumping system of claim 2, wherein, The power output end of the charging USB port is connected with the power input end of the main control chip, and the charging indicator light is connected to one of the programmable IO ports of the main control chip.

4. The water detectable pumping system of claim 3, wherein, A first current limiting resistor is further arranged between the charging indicator light and the main control chip, one end of a first filter capacitor is commonly connected between the power output end of the charging USB port and the power input end and one of the programmable IO ports of the main control chip, and the other end of the first filter capacitor is grounded.

5. An electric water pump comprising the system as claimed in any one of claims 1-4, and comprising a housing, a water inlet pipe, a water outlet pipe, the system being arranged in the housing, the water inlet and outlet of the water pump being in communication with the water inlet pipe and the water outlet pipe respectively, the bottom of the housing being provided with a threaded port for cooperation with a water bucket, characterized in that, The pump is arranged separately from the main control chip, the charging USB port, the battery, the key, and the waterproof detection module.

6. The electric water pump of claim 5, wherein The main control chip, the charging USB port, and the waterproof detection module are arranged on a main board, the key is exposed outside the shell, and the detection ports of the waterproof detection module are distributed at any position of the main board.

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