CN114073468A

CN114073468A - Water level detection device and robot of sweeping floor

Info

Publication number: CN114073468A
Application number: CN202010835668.3A
Authority: CN
Inventors: 陈叶华
Original assignee: Suzhou 3600 Robot Technology Co ltd
Current assignee: Suzhou 3600 Robot Technology Co ltd
Priority date: 2020-08-21
Filing date: 2020-08-21
Publication date: 2022-02-22

Abstract

The invention provides a water level detection device and a sweeping robot, wherein the water level detection device is applied to the sweeping robot, the sweeping robot is provided with a water tank, a drain pipe and a water passing box, the drain pipe is communicated with the water passing box, and the drain pipe is communicated with the water tank; the water level detection device comprises a detection circuit, a controller and an induction component arranged on the water passing box; the input end of the detection circuit is connected with the induction component, and the output end of the detection circuit is connected with the controller. The technical scheme of the invention aims to realize the detection of the water level condition in the water tank of the sweeping robot so as to avoid the phenomena of water break and water shortage of the water tank.

Description

Water level detection device and robot of sweeping floor

Technical Field

The invention relates to the technical field of household appliances, in particular to a water level detection device and a sweeping robot.

Background

The existing sweeping robot often has sweeping and mopping functions, and in order to realize the mopping function of the sweeping robot, a water tank is usually arranged at a housing of the sweeping robot, and water in the water tank and a mop arranged in the water tank are used for mopping. However, in the use process of the floor sweeping robot, due to the fact that the water level in the water tank cannot be obtained in time, the phenomena of water break and water shortage in the water tank are prone to occurring, and the floor sweeping robot is very inconvenient for users to use.

Disclosure of Invention

The invention provides a water level detection device and a sweeping robot, and aims to detect the water level condition in a water tank of the sweeping robot so as to avoid the phenomena of water break and water shortage of the water tank.

In order to achieve the above purpose, the invention provides a water level detection device, which is applied to a sweeping robot, wherein the sweeping robot is provided with a water tank, a drain pipe and a water passing box, the drain pipe is communicated with the water passing box, and the drain pipe is communicated with the water tank;

the water level detection device comprises a detection circuit, a controller and an induction component arranged on the water passing box; the input end of the detection circuit is connected with the induction component, and the output end of the detection circuit is connected with the controller;

the sensing component is used for outputting a sensing signal corresponding to the water passing amount of the water passing box to the detection circuit;

the detection circuit is used for generating a detection signal corresponding to the induction signal and feeding back the detection signal to the controller so that the controller can judge the residual water amount of the water tank according to the detection signal.

Optionally, the detection circuit includes an inductive chip, a first resistor, a second resistor, a third resistor, a fourth resistor, a first capacitor, and a second capacitor;

the first pin and the second pin of the induction chip are connected with an external power supply module, the first end of the first resistor and the first end of the first capacitor; the second end of the first capacitor is grounded;

a third pin of the induction chip is connected with a second end of the first resistor and a first end of the second resistor; the second end of the second resistor is connected with the controller;

a fourth pin of the induction chip is connected with the induction part through the third resistor;

and a fifth pin of the induction chip is grounded through the fourth resistor and the second capacitor which are connected in series.

Optionally, the detection circuit further includes a third capacitor;

and a sixth pin of the induction chip is grounded through the third capacitor.

Optionally, the detection circuit further includes a fourth capacitor;

and a seventh pin of the induction chip is grounded through the fourth capacitor.

Optionally, the water level detection device further comprises an alarm circuit;

the controller is electrically connected with the alarm circuit.

Optionally, the alarm circuit includes a fifth resistor, a first transistor, and a buzzer;

the controller is connected with the controlled end of the first transistor through the fifth resistor, the input end of the first transistor is connected with an external power supply module, and the output end of the first transistor is grounded through the buzzer.

Optionally, the water level detection device further comprises a display circuit;

the controller is electrically connected with the display circuit.

In order to achieve the above object, the present invention further provides a floor sweeping robot, which includes a water tank, a drain pipe, a water passing box and the water level detection device as described above;

the drain pipe is communicated with the water passing box and the water tank;

and the sensing part of the water level detection device is arranged on the water passing box.

Optionally, the drain pipe is provided with a water outlet, a water passing cavity is formed in the water passing box, the water passing box is provided with a water inlet and a water outlet which are communicated with the water passing cavity, and the water inlet is communicated with the water outlet of the drain pipe.

Optionally, the sweeping robot further comprises a water pump and a communicating pipe, the communicating pipe is communicated with the water tank and the water pump, and the drain pipe is communicated with the water pump.

According to the technical scheme, the water passing amount of a water passing box of the sweeping robot is sensed by using the sensing part, and a corresponding sensing signal is generated to the detection circuit according to the sensed water passing amount; the detection circuit generates a detection signal for judging the residual water quantity of the water tank to the controller according to the received induction signal; the controller can judge the residual water quantity of the water tank according to the detection signal fed back by the detection circuit and execute corresponding operation, so that the phenomena of water break and water shortage in the water tank can be avoided, and the convenience for use of a user is greatly improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

FIG. 1 is a block diagram of a water level detecting apparatus according to an embodiment of the present invention;

FIG. 2 is a schematic diagram of a circuit structure of an embodiment of the water level detecting device of the present invention;

FIG. 3 is a schematic circuit diagram of a water level detecting device according to another embodiment of the present invention;

FIG. 4 is a block diagram of a water level detecting apparatus according to another embodiment of the present invention;

FIG. 5 is a schematic circuit diagram of an embodiment of the alarm circuit shown in FIG. 4;

FIG. 6 is a block diagram of a water level detecting device according to another embodiment of the present invention.

The reference numbers illustrate:

10	induction component	20	Detection circuit
				30	Controller	40	Alarm circuit
50	Display circuit	R1	A first resistor
				R2	Second resistance	R3	Third resistance
R4	Fourth resistor	R5	Fifth resistor
				C1	First capacitor	C2	Second capacitor
C3	Third capacitor	C4	Fourth capacitor
				M1	Buzzer	Q1	A first transistor

The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that, if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indications are changed accordingly.

In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

FIG. 1 is a block diagram of a water level detecting device according to an embodiment of the present invention.

Referring to fig. 1, the water level detecting apparatus is applied to a sweeping robot, and the sweeping robot is provided with a water tank, a drain pipe and a water passing box; the drain pipe is communicated with the water passing box and the water tank. The sweeping robot further comprises a shell, the shape of the shell can be designed to be circular, the shell is a main body of the sweeping robot, and the shell can provide installation and support for other parts of the sweeping robot. Usually, a mounting cavity is formed in the housing, and a driving assembly, an electric control assembly and the like of the sweeping robot can be mounted in the mounting cavity. The universal wheels, the cleaning structure and the floor mopping structure of the floor sweeping robot can be arranged at the bottom of the shell, so that the floor sweeping robot can mop the floor and clean the ground in the traveling process.

The water tank of the sweeping robot is mainly used for storing water, and in practical application, when the sweeping robot works, water in the water tank can be discharged onto a mop through the water discharge pipe and the water passing box so as to be used for mopping the floor. Because the water in the water tank needs to be discharged onto the mop through the drain pipe and the water passing box, when the water in the water tank is sufficient, the water passing through the water passing box is large, and when the water tank is lack of water, the water passing through the water passing box is little or even none.

The water level detection device comprises a detection circuit 20, a controller 30 and an induction component 10 arranged on a water passing box of the sweeping robot; the input of the detection circuit 20 is connected to the sensing part 10, and the output of the detection circuit 20 is connected to the controller 30.

The sensing part 10 is arranged in the water passing box and forms a capacitor with water in the water passing box, wherein the sensing part 10 is used as one pole of the capacitor, the water in the water passing box forms the other pole of the capacitor, and the capacitance value of the capacitor can change along with the change of the water passing amount of the water passing box. Accordingly, in the present embodiment, the sensing component 10 can be used to detect the water passing amount of the water passing box and generate a sensing signal corresponding to the water passing amount, for example, generate a capacitance value corresponding to the water passing amount to the detection circuit 20.

The detection circuit 20 is configured to generate a corresponding detection signal according to the received sensing signal and feed the detection signal back to the controller 30, so that the controller 30 can determine how much water is left in the water tank of the floor-sweeping robot according to the received detection signal and execute a corresponding operation, for example, when the water tank is anhydrous, the controller 30 sends an alarm prompt through an alarm circuit; alternatively, the controller 30 displays the remaining amount of water in the water tank through a display circuit, and the controller 40 may be a microprocessor such as a single chip, a DSP, or an FPGA.

According to the technical scheme, the sensing part 10 is used for sensing the water passing amount of a water passing box of the sweeping robot, and corresponding sensing signals are generated to the detection circuit 20 according to the sensed water passing amount; the detection circuit 20 generates a detection signal for judging the residual water amount of the water tank to the controller 30 according to the received induction signal; the controller 30 can determine the amount of the remaining water in the water tank according to the detection signal fed back by the detection circuit 20, and perform corresponding operations to avoid water cut-off and water shortage in the water tank, thereby greatly improving the convenience of the user.

In one embodiment, the drain pipe of the sweeping robot is provided with a water outlet, the water passing box is internally provided with a water passing cavity, the water passing box is provided with a water inlet and a water outlet which are communicated with the water passing cavity, and the water inlet is communicated with the water outlet of the drain pipe. And the sensing part 10 of the water level detection device is arranged at the top of the water passing cavity of the water passing box.

In this embodiment, the water passing box may be made of a plastic material with a light weight and a good structural strength, and the water passing box may be designed to have various shapes, such as a rectangular parallelepiped shape, a square shape, or other reasonable and effective shapes. Preferably, the shape of crossing the water box is the cuboid form to water inlet and delivery port are seted up respectively in the relative both sides wall of crossing the water box in length direction, so, make the water in the drain pipe get into after crossing the water box, can be convenient for response part 10 detects the water level line in the box, in time acquire the residual water volume in the water tank. And water inlet and delivery port in the relative both sides of length direction can make the water that gets into the box of crossing discharge from the opposite side again after deposiing to ensure that the water of crossing the box discharged is comparatively clean, difficult jam.

In an embodiment, referring to fig. 2, the detection circuit 20 includes a sensing chip U1, a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a first capacitor C1, and a second capacitor C2;

the first pin 1 and the second pin 2 of the sensing chip U1 are connected to an external power module Vin, a first end of a first resistor R1, and a first end of a first capacitor C1; the second end of the first capacitor C1 is grounded; the third pin 3 of the sensing chip U1 is connected to the second end of the first resistor R1 and the first end of the second resistor R2; a second end of the second resistor R2 is connected to the controller 30; the fourth pin 4 of the sensing chip U1 is connected to the sensing component 10 through a third resistor R3; the fifth pin 5 of the sensing chip U1 is grounded through a series connection of a fourth resistor R4 and a second capacitor C2.

The sensing chip U1 may be selected as a capacitive sensing chip. Because the water in the water tank needs to be discharged onto the mop through the drain pipe and the water passing box, when the water in the water tank is sufficient, the water passing through the water passing box is large, and when the water tank is lack of water, the water passing through the water passing box is small or even none. The fourth pin 4 of the sensing chip U1 obtains the capacitance value of the capacitor formed by the sensing component 10 and the water in the water passing box, and compares the capacitance value of the capacitor formed by the sensing component 10 and the water passing box with the capacitance value detected by the fifth pin 5 of the sensing chip U1, that is, the capacitance value of the branch in which the fourth resistor R4 and the second capacitor C2 are located, and when the capacitance difference between the capacitance value of the fourth pin 4 of the sensing chip U1 and the capacitance value of the fifth pin 5 is greater than a preset capacitance value, it is determined that the amount of water remaining in the water tank is sufficient; and when the capacitance difference value is smaller than the preset capacitance value, the water in the water tank is considered to be low or no water. When the capacitance value of the fourth pin 4 of the sensing chip U1 is close to the capacitance value of the fifth pin 5 thereof, the sensitivity of water level detection is optimal.

In one embodiment, referring to fig. 3, the detection circuit 20 further includes a third capacitor C3; and the sixth pin 6 of the sensing chip U1 is grounded via the third capacitor C3.

The third capacitor C3 is a discharge capacitor, which can also be understood as a sensitivity adjustment capacitor, and is used to fine tune the sensitivity of the sensing chip U1 for detecting the water level.

In one embodiment, referring to fig. 3, the detection circuit 20 further includes a fourth capacitor C4; the seventh pin 7 of the sensing chip U1 is grounded via the fourth capacitor C4.

The fourth capacitor C4 is a filter capacitor.

In one embodiment, referring to fig. 4, the water level detection apparatus further includes an alarm circuit 40; the controller 30 is electrically connected to the alarm circuit 40.

The alarm circuit 40 is configured to send an alarm prompt to a user according to a control instruction of the controller 30 when the water tank of the floor sweeping robot is empty or the remaining water amount in the water tank of the floor sweeping robot is less than a set water amount, so as to prompt the user to add water to the water tank in time.

In one embodiment, referring to fig. 5, the alarm circuit 40 includes a fifth resistor R5, a first transistor Q1, and a buzzer M; the controller 30 is connected to the controlled terminal of the first transistor Q1 through the fifth resistor R5, the input terminal of the first transistor Q1 is connected to a power module, and the output terminal of the first transistor Q1 is grounded through the buzzer M.

Specifically, when the water tank of the sweeping robot is empty or the remaining water amount in the water tank of the sweeping robot is less than the set water amount, the controller 30 generates a turn-on signal to the first transistor Q1 to control the first transistor Q1 to be turned on; the on signal may be a high-level electrical signal or a low-level electrical signal, and may be specifically set according to the type of the first transistor Q1, and the first transistor Q1 may be a triode, an insulating field effect transistor, or the like. When the first transistor Q1 is turned on, the buzzer M sounds to remind the user that the water tank is empty or lack of water and that water needs to be added to the water tank in time.

In one embodiment, referring to fig. 6, the water level detecting apparatus further includes a display circuit 50; the controller 30 is electrically connected to the display circuit 50.

The display circuit 50 may be provided with a display screen for human-computer interaction, and the display screen may be an LED display screen or an LCD display screen. The display circuit 50 is used for displaying the residual water volume of the current water tank of the sweeping robot according to the control instruction of the controller 30, so that a user can visually know the residual water volume of the water tank of the sweeping robot.

The invention also provides a sweeping robot, which comprises a water tank, a drain pipe, a water passing box and the water level detection device; the drain pipe is communicated with the water passing box and the water tank.

The sweeping robot further comprises a shell, and the shape of the shell can be designed to be circular. The housing is the main body of the sweeping robot and may provide mounting and support for other components. Usually, a mounting cavity is formed in the housing, and a driving assembly, an electric control assembly and the like of the sweeping robot can be mounted in the mounting cavity. The universal wheels, the cleaning structure and the floor mopping structure of the floor sweeping robot can be arranged at the bottom of the shell, so that the floor sweeping robot can mop the floor and clean the ground in the traveling process.

In one embodiment, the sweeping robot further comprises a water pump and a communication pipe, wherein the communication pipe is communicated with the water tank and the water pump, and the drain pipe is communicated with the water pump.

In this embodiment, the water inlet of water pump passes through communicating pipe and water tank intercommunication, and the delivery port of water pump then carries out the drainage through the drain pipe. Through setting up water pump and communicating pipe for water in the water tank can be even, and through quantitative mode flow direction drain pipe with cross in the water box, thereby enable the condition that response part 10 accurately acquireed the displacement of water tank, strengthened the degree of accuracy of acquireing the water level in the water tank greatly.

The above description is only an alternative embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. The water level detection device is applied to a sweeping robot, the sweeping robot is provided with a water tank, a drain pipe and a water passing box, the drain pipe is communicated with the water passing box, and the drain pipe is communicated with the water tank;

2. The water level detecting device of claim 1, wherein the detecting circuit comprises an induction chip, a first resistor, a second resistor, a third resistor, a fourth resistor, a first capacitor and a second capacitor;

3. The water level detecting apparatus according to claim 2, wherein the detecting circuit further comprises a third capacitor;

and a sixth pin of the induction chip is grounded through the third capacitor.

4. The water level detecting apparatus according to claim 3, wherein the detecting circuit further comprises a fourth capacitor;

5. The water level detecting apparatus according to any one of claims 1 to 4, further comprising an alarm circuit;

the controller is electrically connected with the alarm circuit.

6. The water level detecting apparatus of claim 5, wherein the alarm circuit comprises a fifth resistor, a first transistor, and a buzzer;

7. The water level detecting apparatus as claimed in claim 5, further comprising a display circuit;

the controller is electrically connected with the display circuit.

8. A sweeping robot is characterized by comprising a water tank, a drain pipe, a water passing box and the water level detection device as claimed in any one of claims 1 to 7;

the drain pipe is communicated with the water passing box and the water tank;

9. The sweeping robot according to claim 8, wherein the drain pipe is provided with a drain outlet, a water passing cavity is formed in the water passing box, the water passing box is provided with a water inlet and a water outlet which are communicated with the water passing cavity, and the water inlet is communicated with the drain outlet of the drain pipe.

10. The robot of claim 9, further comprising a water pump and a communication pipe, wherein the communication pipe communicates the water tank and the water pump, and the drain pipe communicates with the water pump.