Scrubber protection method and device, scrubber and scrubber system

Abstract

The invention discloses a floor scrubber protection method and device, a floor scrubber and a floor scrubber system. The method comprises the following steps: acquiring a distance detection signal; the current state of the scrubber is judged according to the distance detection signal, and if it is determined that the scrubber is in a to-be-protected state, a driving detection signal is sent to a current detection module configured for the scrubber; acquiring a current detection signal; judging whether the scrubber is in a dangerous operation state or not according to the current detection signal, and if it is determined that the scrubber is in the dangerous operation state, controlling a heating unit of the scrubber to stop heating the cleaning water so as to protect the scrubber. According to the method, the scrubber is protected by detecting the change of the distance between the scrubber and the obstacle and the change of the current of the floor brush motor, the situation that the heating unit continuously works or is dry-burnt when the scrubber stays in a certain place for a long time is avoided, the safety performance of the scrubber is optimized, the service life of the heating unit is prolonged, and the service life of the scrubber is prolonged. And the user experience is improved.

Description

Technical Field

[0001] The present application relates to the technical field of floor scrubbers, and in particular to a floor scrubber protection method, device, floor scrubber, and floor scrubber system. Background Art

[0002] Currently, there are floor washers on the market that can heat water, such as high-temperature floor washers and steam floor washers, to deal with heavy oil stains and stubborn stains.

[0003] This type of floor scrubber generally uses a boiler to heat clean water to generate hot water or steam. During the use of the floor scrubber, if the user is busy with other things or fails to turn off the floor scrubber in time when stopping cleaning for some reason, the boiler will continue to be heated. This may reduce the life of the boiler for a long time, and may even cause safety accidents such as fire due to dry burning of the boiler. Summary of the invention

[0004] In view of the above problems, the present application provides a floor scrubber protection method, device, floor scrubber and floor scrubber system to solve the problem that the boiler of the floor scrubber continues to heat when not in use, resulting in a shortened lifespan and even safety accidents.

[0005] In a first aspect, the present application provides a method for protecting a floor scrubber, the method comprising:

[0006] Obtaining a distance detection signal, where the distance detection signal is a signal generated by a distance detection module configured by the floor scrubber to detect the distance between the floor scrubber and obstacles in the environment;

[0007] The current state of the floor scrubber is determined according to the distance detection signal. If it is determined that the floor scrubber is in a waiting state for protection, a driving detection signal is sent to a current detection module configured for the floor scrubber;

[0008] Acquire a current detection signal, where the current detection signal is a signal generated by a current detection module detecting the current of a floor brush motor of a floor scrubber;

[0009] It is determined whether the floor scrubber is in a dangerous operating state according to the current detection signal. If it is determined that the floor scrubber is in a dangerous operating state, the heating unit of the floor scrubber is controlled to stop heating the cleaning water to protect the floor scrubber.

[0010] In a possible implementation of the present application, judging the current state of the floor scrubber according to the distance detection signal includes:

[0011] A first continuous time length during which the distance detection signal remains unchanged is counted, and when the first continuous time length exceeds a first preset time length, it is determined that the floor scrubber is in a waiting-for-protection state.

[0012] In a possible implementation of the present application, judging whether the floor scrubber is in a dangerous operating state according to the current detection signal includes:

[0013] A second duration during which the current detection signal remains unchanged is counted, and when the second duration exceeds a second preset duration, it is determined that the floor scrubber is in a dangerous operating state.

[0014] In a possible implementation of the present application, controlling the heating unit of the floor scrubber to stop working includes:

[0015] A protection signal is sent to a heating control module of the heating unit, so that the heating control module disconnects the power supply path of the heating unit in response to the protection signal.

[0016] In a second aspect, the present application further provides a floor scrubber protection device, the floor scrubber is equipped with a heating unit for heating cleaning water, and the device comprises:

[0017] A distance detection module is used to detect the distance between the scrubber and obstacles in the environment and generate a distance detection signal;

[0018] A current detection module is configured to detect the current of the floor brush motor of the floor scrubber in response to the driving detection signal and generate a current detection signal;

[0019] The main control module is used to determine the current state of the floor scrubber according to the distance detection signal. If it is determined that the floor scrubber is in a waiting-for-protection state, a drive detection signal is sent out. The main control module is used to determine whether the floor scrubber is in a dangerous operating state according to the current detection signal. If it is determined that the floor scrubber is in a dangerous operating state, the heating unit is controlled to stop heating the cleaning water to protect the floor scrubber.

[0020] In a possible implementation of the present application, the main control module is used to: count a first duration during which the distance detection signal remains unchanged, and when the first duration exceeds a first preset duration, determine that the floor scrubber is in a waiting state for protection.

[0021] In a possible implementation of the present application, the main control module is used to: count the second duration during which the current detection signal remains unchanged, and when the second duration exceeds a second preset duration, determine that the floor scrubber is in a dangerous operating state.

[0022] In a possible implementation of the present application, the distance detection module includes an infrared light emitting unit, an infrared light receiving unit, and a signal amplifying unit;

[0023] An infrared light emitting unit, used for emitting infrared laser;

[0024] An infrared light receiving unit, used to receive reflected light formed by the infrared laser after being reflected by an obstacle, and generate a voltage signal corresponding to the reflected light;

[0025] The signal amplification unit is used to amplify the voltage signal to obtain a distance detection signal and output it to the main control module.

[0026] In a possible implementation of the present application, the signal amplification unit includes an operational amplifier and a first transistor, the first input terminal of the operational amplifier is connected to the infrared light receiving unit, the second input terminal of the operational amplifier is connected to the reference voltage output terminal, the output terminal of the operational amplifier is connected to the base of the first transistor, the collector of the first transistor is respectively connected to the power supply terminal and the main control module, and the emitter of the first transistor is connected to the ground terminal.

[0027] In a possible implementation of the present application, the current detection module includes a current monitoring unit connected to the floor brush motor, and the current monitoring unit is used to sample the voltage signal of the floor brush motor and convert the voltage signal into a current detection signal corresponding to the voltage signal.

[0028] In a possible implementation of the present application, the device further includes a heating control module, and the heating control module is configured to disconnect a power supply path of the heating unit in response to a protection signal sent by the main control module.

[0029] In a possible implementation of the present application, the heating control module includes a power amplifier transistor, a first optocoupler and a bidirectional thyristor, the base of the power amplifier transistor is connected to the main control module for receiving a protection signal, the emitter of the power amplifier transistor is connected to the ground terminal, and the collector of the power amplifier transistor is connected to the light emitter of the first optocoupler;

[0030] The first end of the light receiver of the first optocoupler is connected to the live power line and the first end of the bidirectional thyristor respectively, and the second end of the light receiver of the first optocoupler is connected to the second end of the bidirectional thyristor and the neutral power line respectively.

[0031] In a possible implementation of the present application, the device further includes a floor brush motor control module, and the floor brush motor control module is configured to control the floor brush motor to turn on or off according to a floor brush motor control signal output by the main control module.

[0032] In a possible implementation of the present application, the floor brush motor control module includes a second optocoupler, a power switch chip, and a transistor connected to the floor brush motor. The light emitter of the second optocoupler is connected to the main control module for receiving the floor brush motor control signal. The light receiver of the second optocoupler is connected to the input end of the power switch chip, and the output end of the power switch chip is connected to the control end of the transistor for outputting the transistor control signal to control the switching state of the transistor.

[0033] In a third aspect, the present application further provides a floor scrubber, comprising a heating unit for heating cleaning water and a floor scrubber protection device provided by the second aspect of the present application or any possible implementation of the second aspect of the present application.

[0034] In a fourth aspect, the present application further provides a floor scrubber system, the floor scrubber system comprising a controller and a floor scrubber communicatively connected to the controller;

[0035] The controller is used to control the operation of the floor scrubber and implement the steps in the floor scrubber protection method provided in the first aspect of the present application or any possible implementation of the first aspect.

[0036] From the above content, it can be concluded that the present application has the following beneficial effects:

[0037] In the present application, the current state of the floor scrubber is first determined based on the distance detection signal generated by the distance detection module for detecting the distance between the floor scrubber and obstacles in the environment. If it is determined that the floor scrubber is in a waiting-for-protection state, that is, the floor scrubber has not moved for a long time, the current detection signal generated by the current detection module for detecting the current of the floor brush motor is further obtained. According to the current detection signal, it is determined whether the floor scrubber is operating in a dangerous manner. If so, the heating unit of the floor scrubber is controlled to stop heating the cleaning water to avoid the heating unit from continuing to work or dry burning when the floor scrubber stays in a certain place for a long time. This greatly optimizes the safety performance of the floor scrubber, extends the service life of the heating unit, and improves the user experience.

[0038] These and other aspects of the present application will become more clearly understood in the description of the following embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0040] Figure 1 It is a flow chart of a floor scrubber protection method provided in an embodiment of the present application;

[0041] Figure 2 It is a functional module diagram of a floor scrubber protection device provided in an embodiment of the present application;

[0042] Figure 3 is a functional module schematic diagram of a distance detection module provided in an embodiment of the present application;

[0043] Figure 4 is a circuit principle diagram of a distance detection module provided in an embodiment of the present application;

[0044] Figure 5is a circuit principle diagram of a current detection module provided in an embodiment of the present application;

[0045] Figure 6 is another functional module diagram of the floor scrubber protection device provided in an embodiment of the present application;

[0046] Figure 7 is a circuit principle diagram of a heating control module provided in an embodiment of the present application;

[0047] Figure 8 It is a circuit principle diagram of a floor brush motor control module provided in an embodiment of the present application;

[0048] Fig. 9 is a structural schematic diagram of a floor scrubber provided in an embodiment of the present application;

[0049] Fig.10 It is a structural schematic diagram of the floor scrubber system provided in an embodiment of the present application. DETAILED DESCRIPTION

[0050] The following will be combined with the drawings in this application to clearly and completely describe the technical solutions in this application. Obviously, the described embodiments are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of this application.

[0051] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first" and "second" are used only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0052] In this application, the word "exemplary" is used to mean "used as an example, illustration, or description." Any embodiment described in this application as "exemplary" is not necessarily to be construed as being preferred or advantageous over other embodiments. The following description is given to enable any technician in the field to implement and use the present application. In the following description, details are listed for the purpose of explanation. It should be understood that a person of ordinary skill in the art can recognize that the present application can be implemented without using these specific details. In other instances, well-known structures and processes will not be elaborated in detail to avoid obscuring the description of the present application with unnecessary details. Therefore, the present application is not intended to be limited to the embodiments shown, but is consistent with the widest scope consistent with the principles and features disclosed in the present application.

[0053] Moreover, the terms "comprises," "comprising," or any other variation thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of additional identical elements in the process, method, article, or apparatus that includes the element.

[0054] It should be noted that in the embodiments of the present application, "connection" can be understood as electrical connection, and the connection between two electrical components can be a direct or indirect connection between the two electrical components. For example, the connection between A and B can be either a direct connection between A and B or an indirect connection between A and B through one or more other electrical components.

[0055] The first pole / first end of each transistor used in the embodiments of the present application is one of the source and the drain, and the second pole / second end of each transistor is the other of the source and the drain. Since the source and drain of the transistor can be symmetrical in structure, the source and drain thereof can be structurally indistinguishable, that is, the first pole / first end and the second pole / second end of the transistor in the embodiments of the present application can be structurally indistinguishable. Exemplarily, in the case where the transistor is a P-type transistor, the first pole / first end of the transistor is the source, and the second pole / second end is the drain; exemplarily, in the case where the transistor is an N-type transistor, the first pole / first end of the transistor is the drain, and the second pole / second end is the source.

[0056] The present application provides a floor scrubber protection method, device, floor scrubber and floor scrubber system, which are described in detail below.

[0057] First, the present application provides a floor scrubber protection method, the execution subject of the method can be a floor scrubber protection device, or a floor scrubber, controller and other different types of equipment integrated with the floor scrubber protection device. The floor scrubber protection method can be applied to cleaning equipment such as steam floor scrubbers and high-temperature floor scrubbers, and is used to turn off the heating unit of the floor scrubber in time when the user leaves the floor scrubber and does not turn off the floor scrubber, so as to avoid dry burning and other situations, and protect the floor scrubber.

[0058] like Figure 1 As shown, Figure 1 It is a flow chart of the floor scrubber protection method provided in the embodiment of the present application. It should be noted that although the logical order is shown in the flow chart, in some cases, the steps shown or described may be performed in a different order than here. The floor scrubber protection method provided in the present application may specifically include the following multiple steps.

[0059] Step S101, obtaining a distance detection signal, where the distance detection signal is a signal generated by a distance detection module configured for the floor scrubber to detect the distance between the floor scrubber and an obstacle in the environment.

[0060] In an embodiment of the present application, the floor scrubber may be configured with a distance detection module, through which the distance detection module can detect the distance between the floor scrubber and obstacles in its surrounding environment, thereby generating a corresponding distance detection signal. The distance detection module can detect the distance between the floor scrubber and the obstacle in real time based on a pre-set sampling frequency. For example, the distance detection module can be set to sample the distance once per second, so that the distance detection signal at the corresponding moment can be obtained every 1 second. It can be understood that the sampling frequency of the distance detection module can be determined according to actual needs or actual application scenarios, and is not specifically limited here.

[0061] In some specific implementations, the distance detection module can upload the generated distance detection signal to the main control module of the floor scrubber based on a preset upload frequency. That is, the main control module can obtain the distance detection signal corresponding to each sampling moment based on the upload frequency.

[0062] In some other specific implementations, the main control module may also send an acquisition instruction to the distance detection module based on a preset acquisition frequency, so that the distance detection module can send the generated distance detection signal to the main control module in response to the acquisition instruction, so that the main control module can acquire the distance detection signal.

[0063] It can be understood that the distance detection signal can represent the distance between the obstacle in the environment and the floor scrubber. If the floor scrubber does not move, then for the same obstacle (here we mainly discuss fixed obstacles), the distance between the floor scrubber and it will not change, so the distance detection signal will not change, that is, under the premise that the floor scrubber does not move, the distance detection signal generated at each moment is the same; conversely, if the floor scrubber is moving, the distance between it and the obstacle will change, and the distance detection signal will also change accordingly.

[0064] Step S102: judging the current state of the floor scrubber according to the distance detection signal; if it is determined that the floor scrubber is in a waiting-for-protection state, sending a driving detection signal to a current detection module configured for the floor scrubber.

[0065] According to the record of step S101, it can be known that different distances between the floor scrubber and the obstacle correspond to different distance detection signals. If the floor scrubber stays in a certain area for a long time, the distance between the floor scrubber and the obstacle will remain unchanged for a long time. This may be because the user has left the floor scrubber. If the floor scrubber only stays in the area and does not perform the cleaning action, there will be no safety hazard. If the user leaves the floor scrubber and does not turn off its power, that is, the floor scrubber is still performing the cleaning action, and its floor brush, heating unit and other components are still working, there may be a safety hazard.

[0066] Therefore, the main control module can first determine the current state of the floor scrubber based on the distance detection signal, that is, determine whether the floor scrubber is moving or has not moved for a long time. If it is determined that the floor scrubber has not moved for a long time, it can be considered that the floor scrubber is in a state to be protected, and it is necessary to further determine whether it is still performing the cleaning action.

[0067] Based on this, the main control module can send a driving detection signal to the current detection module of the floor scrubber to drive the current detection signal to detect the floor brush current of the floor scrubber.

[0068] Step S103: Acquire a current detection signal, where the current detection signal is a signal generated by a current detection module detecting the current of a floor brush motor of a floor scrubber.

[0069] In the embodiment of the present application, the current detection module can start the current detection of the floor brush motor in response to the driving detection signal. Specifically, the current detection module can sample the current of the floor brush motor based on a preset detection frequency. For example, if the sampling is set once per second, the current detection signal at the corresponding moment can be obtained every 1 second. It can be understood that the detection frequency of the current detection module can be determined according to actual needs or actual application scenarios, and is not specifically limited here.

[0070] The main control module may acquire the current detection signal in the same manner as the distance detection signal, and thus the above description of the acquisition of the distance detection signal may be referred to and will not be repeated here.

[0071] Step S104: judging whether the floor scrubber is in a dangerous operating state according to the current detection signal; if it is determined that the floor scrubber is in a dangerous operating state, controlling the heating unit of the floor scrubber to stop heating cleaning water to protect the floor scrubber.

[0072] It can be understood that if the floor brush motor of the floor scrubber does not move for a long time and does not run, it can be considered that the floor scrubber is only staying in the area and not performing the cleaning action. At this time, the heating unit is not working and no safety accident will occur. On the contrary, if the floor brush motor is still working, it can be considered that the user has left the floor scrubber and the floor scrubber is still performing the cleaning action. At this time, the heating unit continues to heat the cleaning water, which may cause a safety accident. In other words, the floor scrubber can be considered to be in a dangerous operating state.

[0073] Therefore, when it is determined according to the current detection signal that the floor scrubber is in a dangerous operating state, the main control module can control the heating unit to stop heating the cleaning water, that is, turn off the heating unit, thereby avoiding the situation of dry burning caused by the continuous operation of the heating unit, and protecting the floor scrubber safely.

[0074] In an embodiment of the present application, the current state of the floor scrubber is first determined based on a distance detection signal generated by a distance detection module for detecting the distance between the floor scrubber and obstacles in the environment. If it is determined that the floor scrubber is in a waiting-for-protection state, that is, the floor scrubber has not moved for a long time, a current detection signal generated by a current detection module for detecting the current of a floor brush motor is further obtained. Based on the current detection signal, it is determined whether the floor scrubber is operating in a dangerous manner. If so, the heating unit of the floor scrubber is controlled to stop heating cleaning water to prevent the heating unit from continuing to work or dry burning when the floor scrubber stays in a certain place for a long time. This greatly optimizes the safety performance of the floor scrubber, extends the service life of the heating unit, and improves the user experience.

[0075] Next, continue to Figure 1 Each step shown and a specific implementation method that may be used in practical applications are described in detail.

[0076] In some embodiments of the present application, judging the current state of the floor scrubber according to the distance detection signal may further include:

[0077] A first continuous time length during which the distance detection signal remains unchanged is counted, and when the first continuous time length exceeds a first preset time length, it is determined that the floor scrubber is in a waiting-for-protection state.

[0078] Since different distances between the floor scrubber and the obstacle correspond to different distance detection signals, when the distance detection signal is received, the main control module can start timing and count the duration for which the distance detection signal remains unchanged. If the counted duration exceeds the first preset duration, that is, the first duration exceeds the first preset duration, it can be known that the distance detection signal representing the distance has remained unchanged. At this time, it can be known that the distance between the floor scrubber and the obstacle has remained unchanged, that is, the floor scrubber has not been moved within the time range of the first preset duration, and the user may have left. Therefore, it can be considered that the floor scrubber is in a state to be protected.

[0079] On the contrary, if the distance detection signal changes within the first preset time period, it can be considered that the user is using the floor scrubber to clean, and it can be determined that the floor scrubber is in a normal working state.

[0080] In the embodiment of the present application, the first preset duration can be set to 45s, 60s, 90s, etc., which can be determined based on the user's experience and habits or actual application scenarios, and is not limited here.

[0081] In some embodiments of the present application, judging whether the floor scrubber is in a dangerous operating state according to the current detection signal may further include:

[0082] A second duration during which the current detection signal remains unchanged is counted, and when the second duration exceeds a second preset duration, it is determined that the floor scrubber is in a dangerous operating state.

[0083] On the premise that it has been determined that the floor scrubber has not moved for a long time, it can be judged whether it is still performing the cleaning action based on the current of its floor brush motor. Therefore, in the embodiment of the present application, when the current detection signal is received, the main control module can also start the timing to count the duration for which the current detection signal remains unchanged. If the counted duration exceeds the second preset duration, that is, the second duration exceeds the second preset duration, it can be known that the current of the floor brush motor has not changed, that is, the floor scrubber is continuously performing the cleaning action, and its heating unit is still heating the cleaning water. Therefore, it can be considered that the floor scrubber is in a dangerous operating state.

[0084] On the contrary, if the current detection signal changes within the first preset time period, it can be considered that the user is adjusting the working parameters of the floor scrubber or turning off the power of the floor scrubber, and it can be determined that the floor scrubber is in a normal state.

[0085] In the embodiment of the present application, the second preset time length may be the same as the first preset time length, or may be different from the first preset time length. The second preset time length may be set to 30s, 45s, 60s, etc., which can be determined based on past experience or actual application scenarios and is not limited here.

[0086] In some embodiments of the present application, controlling the heating unit of the floor scrubber to stop working may further include:

[0087] A protection signal is sent to a heating control module of the heating unit, so that the heating control module disconnects the power supply path of the heating unit in response to the protection signal.

[0088] In an embodiment of the present application, the working state of the heating unit can be regulated by the heating control module. When the main control module determines that the floor scrubber is in a dangerous operating state, the main control module can send a protection signal to the heating control module, so that the heating control module can control the heating unit to stop heating the cleaning water in response to the protection signal, for example, by disconnecting the power supply path of the heating unit through the heating control unit, thereby causing the heating unit to stop heating.

[0089] The above is a description of the floor scrubber protection method of the embodiment of the present application. In order to better implement the floor scrubber protection method provided by the present application, the present application also provides a floor scrubber protection device, such as Figure 2 As shown, the scrubber may be provided with a heating unit 301 for heating cleaning water, and the scrubber protection device 200 may include:

[0090] The distance detection module 201 can be used to detect the distance between the floor scrubber and obstacles in the environment and generate a distance detection signal.

[0091] The current detection module 202 may be configured to detect the current of a floor brush motor (not shown in the figure) of the floor scrubber in response to the driving detection signal, and generate a current detection signal.

[0092] The main control module 203 can be used to determine the current state of the floor scrubber based on the distance detection signal. If it is determined that the floor scrubber is in a state to be protected, a drive detection signal is sent out, and whether the floor scrubber is in a dangerous operating state is determined based on the current detection signal. If it is determined that the floor scrubber is in a dangerous operating state, the heating unit 301 is controlled to stop heating the cleaning water to protect the floor scrubber.

[0093] In the embodiment of the present application, the distance detection module 201 can be any existing distance detection sensor or circuit, including but not limited to an infrared distance detection sensor, a time of flight (TOF) sensor, etc. The distance detection module 201 can detect the distance between the floor scrubber and the obstacle. It can be understood that in different application scenarios, the distance detection module 201 can be configured at different positions of the floor scrubber to detect the distance of obstacles at any angle in the surrounding environment of the floor scrubber.

[0094] The current detection module 202 can detect the current of the floor brush motor by any existing method, including but not limited to coupling, sampling and the like.

[0095] In the embodiment of the present application, the main control module 203 can be any existing type of controller such as a microcontroller unit (MCU), a single-chip microcomputer, etc., which can be connected to the distance detection module 201, the distance detection module 201 and the heating unit 301 respectively, so as to determine the state of the floor scrubber through the data detected by the detection module to control the operation of the heating unit 301.

[0096] In the embodiment of the present application, the main control module 203 first determines the current state of the floor scrubber based on the distance detection signal generated by the distance detection module 201 for detecting the distance between the floor scrubber and obstacles in the environment. If it is determined that the floor scrubber is in a waiting state, that is, the floor scrubber has not moved for a long time, the current detection module 202 further obtains the current detection signal generated by detecting the current of the floor brush motor, and determines whether the floor scrubber is running dangerously based on the current detection signal. If so, the heating unit 301 of the floor scrubber is controlled to stop heating the cleaning water to avoid the heating unit 301 from continuing to work or dry burning when the floor scrubber stays in a certain place for a long time, which greatly optimizes the safety performance of the floor scrubber, extends the service life of the heating unit 301, and improves the user experience.

[0097] Next, continue to Figure 2 The modules shown and the specific implementation methods that may be used in practical applications are described in detail.

[0098] like Figure 3 As shown, in some embodiments of the present application, the distance detection module 201 may include an infrared light emitting unit 2011, an infrared light receiving unit 2012 and a signal amplifying unit 2013, wherein the infrared light emitting unit 2011 can be used to emit infrared laser; the infrared light receiving unit 2012 can be used to receive reflected light formed by the infrared laser after being reflected by an obstacle, and generate a voltage signal corresponding to the reflected light; the signal amplifying unit 2013 can be used to amplify the voltage signal to obtain a distance detection signal output to the main control module 203.

[0099] In the embodiment of the present application, after the infrared laser is emitted by the infrared light emitting unit 2011, if there is an obstacle in the optical path, the infrared laser will be reflected on the surface of the obstacle, thereby forming reflected light. If the reflected light is received by the infrared light receiving unit 2012, a corresponding voltage signal will be generated. At this time, the voltage signal may not trigger the corresponding function of the main control module 203 due to its small amplitude. Therefore, the voltage signal is amplified by the signal amplifying unit 2013 to obtain a distance detection signal output to the main control module 203, so that the main control module 203 can judge the current state of the floor scrubber according to the distance detection signal.

[0100] The signal amplifying unit 2013 may adopt any existing amplifier, such as an operational amplifier, a triode, etc., and the specific amplifier may be determined according to the actual application scenario.

[0101] See also Figure 4 In some embodiments of the present application, the infrared light receiving unit 2012 may include a light emitting diode L1 connected to the first interface JP1, the infrared light receiving unit 2012 may include a second diode D2, and the signal amplifying unit may include an operational amplifier U1A and a first transistor Q1.

[0102] Among them, the cathode of the second diode D2 is connected to pin 1 of the second interface JP2 through the first resistor R1, the cathode of the second diode D2 is also connected to the grounded first capacitor C1, the anode of the second diode D2 is connected to the inverting input terminal of the operational amplifier U1A, that is, pin 2, the non-inverting input terminal of the operational amplifier U1A, that is, pin 1 is connected to the reference voltage output terminal for receiving the reference voltage signal Vref, the output terminal of the operational amplifier U1A is connected to the base of the first transistor Q1, the emitter of the first transistor Q1 is grounded, and the collector of the first transistor Q1 is connected to the +12V power supply terminal through the second resistor R2 and to the main control module 203 through the fourth resistor R4 to output a distance detection signal thereto.

[0103] When the second diode D2 receives the reflected light of the infrared laser of the light-emitting diode L1, a voltage signal is generated and input into the inverting input terminal of the operational amplifier U1A. The operational amplifier U1A amplifies the voltage signal input into the inverting input terminal based on the reference voltage signal Vref, and outputs a corresponding amplified signal to trigger the first transistor Q1 to turn on. Current flows through the second resistor R2 and the fourth resistor R4, thereby generating a distance detection signal and outputting it to the main control module 203.

[0104] In the embodiment of the present application, the second diode D2 can generate voltage signals of different sizes according to the different intensities of the received reflected light. When the amplification factors of the operational amplifier U1A and the first transistor Q1 are determined, distance detection signals of different sizes will be generated, so that the main control module 203 can determine whether the floor scrubber is moving according to the distance detection signal.

[0105] In some embodiments of the present application, the current detection module 202 may include a current monitoring unit connected to the floor brush motor, which may be used to sample the voltage signal of the floor brush motor and convert the voltage signal into a current detection signal corresponding to the voltage signal.

[0106] like Figure 5As shown, the current monitoring unit can use a chip-type open-loop Hall current sensor U13 of model SC820, the ground brush motor can be connected to the sixth interface JP6, and the ground brush motor is powered by the +310V power supply end, and pin 1 of the chip-type open-loop Hall current sensor U13 can be connected to pin 1 connected to the sixth interface JP6, thereby being connected to the ground brush motor circuit, and the output terminal VIOU of the chip-type open-loop Hall current sensor U13, i.e., pin 12, is connected to the main control module 203 through the fifty-second resistor R52 to output a current detection signal to the main control module 203.

[0107] The chip-type open-loop Hall current sensor U13 samples the voltage signal of the floor brush motor through pin 1, converts the voltage signal into a corresponding current detection signal, and then outputs it to the main control module 203 through the output terminal VIOU, i.e., pin 12, so that the main control module 203 determines the working status of the floor brush motor according to the current detection signal, thereby judging the status of the floor scrubber.

[0108] like Figure 6 As shown, in some embodiments of the present application, the floor scrubber protection device 200 may further include a heating control module 204 , which may be configured to disconnect the power supply path of the heating unit 301 in response to a protection signal sent by the main control module 203 .

[0109] Specifically, Figure 7 As shown, the heating control module 204 may include a power amplifier transistor TR1, a first optocoupler PC1 and a bidirectional thyristor T2, wherein the power amplifier transistor TR1 is integrated on the power amplifier chip U11, the base of the power amplifier transistor TR1, that is, the 2nd pin of the power amplifier chip U11 is connected to the main control module 203 for receiving a protection signal, the emitter of the power amplifier transistor TR1, that is, the 1st pin of the power amplifier chip U11 is connected to the ground terminal GND, the collector of the power amplifier transistor TR1, that is, the 6th pin of the power amplifier chip U11 is connected to the cathode of the light emitter of the first optocoupler PC1, and the anode of the light emitter of the first optocoupler PC1 is connected to the +5V power supply terminal through the twenty-fourth resistor R24.

[0110] The first end of the light receiver of the first optocoupler PC1 is connected to the power supply live line L and the first end of the bidirectional thyristor T2 respectively through the twenty-fifth resistor R25, and the second end of the light receiver of the first optocoupler PC1 is connected to the second end of the bidirectional thyristor T2 and the power supply neutral line respectively.

[0111] The heating unit 301 can be a heating element such as a positive temperature coefficient (PTC) thermistor. The heating unit 301 can be connected to the power supply neutral line through the tenth interface JP10. When the heating unit 301 needs to work, the main control module 203 outputs a high-level signal, the power amplifier transistor TR1 is turned on in response to the high-level signal, the light emitter of the first optocoupler PC1 emits light, the light receiver of the first optocoupler PC1 is turned on, and thus the bidirectional thyristor T2 is turned on, the power supply path of the heating unit 301 is turned on, and the heating unit 301 is powered on to generate heat.

[0112] When the main control module 203 outputs a protection signal, i.e., a low-level signal, the power amplifier transistor TR1 is disconnected in response to the low-level signal, the light emitter of the first optocoupler PC1 does not emit light, the light receiver of the first optocoupler PC1 is disconnected, and thus the bidirectional thyristor T2 does not conduct, the power supply path of the heating unit 301 is broken, and the heating unit 301 stops heating.

[0113] In some embodiments of the present application, the floor scrubber protection device 200 may further include a floor brush motor control module, which may be configured to control the floor brush motor to turn on or off according to a floor brush motor control signal output by the main control module 203 .

[0114] like Figure 8 As shown, the floor brush motor control module may include a second optocoupler PC2, a power switch chip U9 of model N531, and a transistor Q2 connected to the floor brush motor, and the transistor Q2 may be used as a switch of the floor brush motor. Specifically, the second optocoupler PC2 may be connected to the main control module 203 through the sixth transistor Q6, that is, the main control module 203 is connected to the base of the sixth transistor Q6 through the fifty-sixth resistor R56, the emitter of the sixth transistor Q6 is grounded, and the collector of the sixth transistor Q6 is connected to the cathode of the light emitter of the second optocoupler PC2. The anode of the light emitter is connected to the +5V power supply terminal through the fifty-seventh resistor R57, one end of the light receiver of the second optocoupler PC2 is grounded, and the other end is connected to the base of the seventh transistor Q7 through the fifty-fifth resistor R55, the emitter of the seventh transistor Q7 is connected to the +15V power supply terminal, the collector of the seventh transistor Q7 is connected to the input terminal Vin, i.e., pin 5, of the power switch chip U9, the output terminal Vout, i.e., pin 3, of the power switch chip U9 is connected to the control end of the transistor Q2 through the fifty-third resistor R53, the first end of the transistor Q2 is connected to the ground brush motor, and the second end is grounded.

[0115] The main control module 203 outputs the ground brush motor control signal to the sixth transistor Q6. If the ground brush motor control signal is a high level signal, such as 15V, the sixth transistor Q6 is turned on, the second optical coupler PC2 is turned on, the seventh transistor Q7 is turned on, and the power switch chip U9 outputs the transistor control signal to the transistor Q2. The transistor Q2 is turned on, and the ground brush motor runs;

[0116] If the floor brush motor control signal output by the main control module 203 is a low-level signal such as 0V, the sixth transistor Q6 is disconnected, the second optocoupler PC2 is not conducting, the seventh transistor Q7 is disconnected, and there is no input signal at the input terminal Vin of the power switch chip U9, i.e., pin 5. Then, no transistor control signal is output to the transistor Q2, the transistor Q2 is disconnected, and the floor brush motor is powered off and does not run.

[0117] In this way, when it is determined that the floor scrubber is in a dangerous operating state, its floor brush motor can be controlled to shut down to save electricity and extend the service life of the floor brush motor.

[0118] See also Fig. 9 The present application also provides a floor scrubber 300, which may include a heating unit 301 for heating cleaning water and a Figures 2 to 8 Corresponding to the floor scrubber protection device 200 in any embodiment.

[0119] It should be noted that in the present application, the relevant contents of the floor scrubber protection device 200 correspond to the above one by one, and the technicians in the relevant field can clearly understand that for the convenience and simplicity of description, the specific working process of the floor scrubber protection device and its corresponding unit modules described above can refer to the following. Figures 2 to 8 The description of the floor scrubber protection device in any embodiment will not be repeated here.

[0120] In order to better implement the floor scrubber protection method of the present application, Fig.10 As shown, the present application also provides a floor scrubber system 500, which may include a controller 400 and a floor scrubber 300 that is communicatively connected to the controller 400;

[0121] The controller 400 can be used to control the operation of the floor scrubber 300 and implement Figure 1 Corresponding to the steps in the floor scrubber protection method in any embodiment.

[0122] The controller 400 can control the floor scrubber 300 to implement the present application as follows Figure 1 Corresponding to the floor scrubber protection method in any embodiment, therefore, the present application can be implemented as follows Figure 1 The beneficial effects that can be achieved by the floor scrubber protection method in any embodiment are detailed in the previous description and will not be repeated here.

[0123] The technical solution of the present application is described below in conjunction with a specific application scenario to facilitate understanding.

[0124] When the user is cleaning the restaurant area with a high-temperature floor scrubber, he puts down the floor scrubber and goes to the bedroom because he needs to answer a phone call. At this time, the distance detection module continues to detect the distance between the floor scrubber and the wall directly opposite it, and outputs a distance detection signal to the main control module. The main control module counts that the distance detection signal remains unchanged for more than 1 minute, then drives the current detection module to detect the current of the floor brush motor. The main control module counts that the current detection signal remains unchanged for more than 1 minute, then controls the boiler to stop heating the cleaning water and turns off the floor brush motor to extend the service life of the boiler and the floor brush motor and ensure electricity safety.

[0125] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, please refer to the detailed description of other embodiments above, and will not be repeated here.

[0126] In specific implementation, the above units or structures can be implemented as independent entities, or can be arbitrarily combined to be implemented as the same or several entities. The specific implementation of the above units or structures can refer to the previous embodiments and will not be repeated here.

[0127] The above is a detailed introduction to a floor scrubber protection method, device, floor scrubber and floor scrubber system provided by the present application. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The above description is only used to help understand the method and core idea of ​​the present application; at the same time, for technical personnel in this field, according to the idea of ​​the present application, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A method for protecting a floor scrubber, characterized in that: The method comprises: Acquire a distance detection signal, where the distance detection signal is a signal generated by a distance detection module configured for the floor scrubber to detect the distance between the floor scrubber and an obstacle in the environment; The current state of the floor scrubber is determined according to the distance detection signal, and if it is determined that the floor scrubber is in a waiting state for protection, a driving detection signal is sent to a current detection module configured for the floor scrubber; Acquire a current detection signal, where the current detection signal is a signal generated by the current detection module detecting the current of the floor brush motor of the floor scrubber; It is determined whether the floor scrubber is in a dangerous operating state according to the current detection signal. If it is determined that the floor scrubber is in the dangerous operating state, the heating unit of the floor scrubber is controlled to stop heating cleaning water to protect the floor scrubber.

2. The method according to claim 1, characterized in that: The determining the current state of the floor scrubber according to the distance detection signal includes: A first duration during which the distance detection signal remains unchanged is counted, and when the first duration exceeds a first preset duration, it is determined that the floor scrubber is in the waiting-for-protection state.

3. The method according to claim 1, characterized in that The determining whether the floor scrubber is in a dangerous operating state according to the current detection signal includes: A second duration during which the current detection signal remains unchanged is counted, and when the second duration exceeds a second preset duration, it is determined that the floor scrubber is in the dangerous operating state.

4. The method according to claim 1, characterized in that The step of controlling the heating unit of the floor scrubber to stop working comprises: A protection signal is sent to a heating control module of the heating unit, so that the heating control module disconnects a power supply path of the heating unit in response to the protection signal.

5. A floor scrubber protection device, characterized in that: The floor scrubber is provided with a heating unit for heating cleaning water, and the device comprises: A distance detection module, used to detect the distance between the floor scrubber and obstacles in the environment, and generate a distance detection signal; a current detection module, configured to detect the current of the floor brush motor of the floor scrubber in response to the driving detection signal, and generate a current detection signal; The main control module is used to determine the current state of the floor scrubber according to the distance detection signal, and if it is determined that the floor scrubber is in a waiting-for-protection state, send the drive detection signal, and determine whether the floor scrubber is in a dangerous operating state according to the current detection signal, and if it is determined that the floor scrubber is in the dangerous operating state, control the heating unit to stop heating the cleaning water to protect the floor scrubber.

6. The device according to claim 5, characterized in that The main control module is used to: count a first duration during which the distance detection signal remains unchanged, and when the first duration exceeds a first preset duration, determine that the floor scrubber is in the waiting-for-protection state.

7. The device according to claim 5, characterized in that The main control module is used to: count the second duration during which the current detection signal remains unchanged, and when the second duration exceeds a second preset duration, determine that the floor scrubber is in the dangerous operating state.

8. The device according to claim 5, characterized in that The distance detection module includes an infrared light emitting unit, an infrared light receiving unit and a signal amplifying unit; The infrared light emitting unit is used to emit infrared laser; The infrared light receiving unit is used to receive the reflected light formed by the infrared laser after being reflected by the obstacle, and generate a voltage signal corresponding to the reflected light; The signal amplifying unit is used to amplify the voltage signal to obtain the distance detection signal and output it to the main control module.

9. The device according to claim 8, characterized in that The signal amplification unit includes an operational amplifier and a first transistor, the first input end of the operational amplifier is connected to the infrared light receiving unit, the second input end of the operational amplifier is connected to the reference voltage output end, the output end of the operational amplifier is connected to the base of the first transistor, the collector of the first transistor is respectively connected to the power supply end and the main control module, and the emitter of the first transistor is connected to the ground end.

10. The device according to claim 5, characterized in that The current detection module includes a current monitoring unit connected to the floor brush motor, and the current monitoring unit is used to sample the voltage signal of the floor brush motor and convert the voltage signal into the current detection signal corresponding to the voltage signal.

11. The device according to claim 5, characterized in that The device further comprises a heating control module, wherein the heating control module is configured to disconnect a power supply path of the heating unit in response to a protection signal sent by the main control module.

12. The device according to claim 11, characterized in that The heating control module comprises a power amplifier transistor, a first optocoupler and a bidirectional thyristor, the base of the power amplifier transistor is connected to the main control module for receiving the protection signal, the emitter of the power amplifier transistor is connected to the ground terminal, and the collector of the power amplifier transistor is connected to the light emitter of the first optocoupler; The first end of the light receiver of the first optocoupler is connected to the live power line and the first end of the bidirectional thyristor respectively, and the second end of the light receiver of the first optocoupler is connected to the second end of the bidirectional thyristor and the neutral power line respectively.

13. The device according to claim 5, characterized in that The device further comprises a floor brush motor control module, and the floor brush motor control module is configured to control the floor brush motor to be turned on or off according to a floor brush motor control signal output by the main control module.

14. The device according to claim 13, characterized in that The floor brush motor control module includes a second optocoupler, a power switch chip and a transistor connected to the floor brush motor. The light emitter of the second optocoupler is connected to the main control module for receiving the floor brush motor control signal. The light receiver of the second optocoupler is connected to the input end of the power switch chip. The output end of the power switch chip is connected to the control end of the transistor for outputting a transistor control signal to control the switching state of the transistor.

15. A floor scrubber, characterized in that: The floor scrubber comprises a heating unit for heating cleaning water and a floor scrubber protection device according to any one of claims 5 to 14.

16. A floor scrubber system, characterized in that: It includes a controller and a floor scrubber connected to the controller in communication; The controller is used to control the operation of the floor scrubber and implement the steps in the floor scrubber protection method according to any one of claims 1 to 4.

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