Control device and electric appliance

Abstract

The invention relates to the technical field of electric appliance control, particularly provides a control device and an electric appliance, and solves the problems of complex design, low reliability and high cost of an existing man-machine interaction mode. In order to achieve the purpose, the control device comprises a PCB, a projection module, an identification module and a first MCU. The projection module, the identification module and the first MCU are all integrated on the PCB, and the projection module and the identification module are both in communication connection with the first MCU; the projection module is used for projecting light beams to form a projection area, the recognition module can recognize control information in the projection area and transmit the recognized control information to the first MCU, and the first MCU determines an action instruction needing to be executed by the equipment according to the control information. All the modules are integrated on the PCB, wiring harnesses do not need to be arranged, signal transmission among all the modules can be stable, and then working stability is guaranteed. Without a wire harness, the whole device is small, the installation is simple, and the design cost is also reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of electrical appliance control, and particularly provides a control device and an electrical appliance. Background Art

[0002] Most of the projection modules used in current household appliances are for simple display purposes and do not have the ability to receive user instructions and identify and generate reaction actions.

[0003] To achieve human-computer interaction, it is only possible to build a communication loop using a wire harness between the projection module and other modules with the ability to identify user instructions and transmit the signal to the main control chip. This design method is highly complex (the position of the wire harness needs to be considered in the whole machine system) and difficult to implement. Secondly, it is prone to affecting the reliability of the module operation due to corrosion, moisture, etc. Finally, it will also increase the design cost.

[0004] Therefore, there is an urgent need in the related field for a control device and an electrical appliance to solve the above technical problems. Summary of the Invention

[0005] The present invention aims to solve the above technical problems, that is, to solve the problems of complex design, low reliability and high cost of the existing human-computer interaction methods.

[0006] In a first aspect, the present invention provides a control device, which includes a PCB, a projection module, an identification module and a first MCU; the projection module, the identification module and the first MCU are all integrated on the PCB, and the projection module and the identification module are both communicatively connected to the first MCU;

[0007] The projection module is used to project a light beam to form a projection area, the identification module can identify the control information within the projection area, and transmit the identified control information to the first MCU, and the first MCU determines the action instruction that the device needs to execute according to the control information.

[0008] In a specific embodiment of the above control device, the control information is at least one of body movements, temperature information, facial information, voice information and pupil information.

[0009] In a specific embodiment of the above control device, the identification module is at least one of a laser rangefinder, an infrared detector, a motion sensor, a millimeter wave radar, a long-distance infrared thermometer, a face recognition sensor and a pupil recognition sensor.

[0010] In a specific embodiment of the above control device, the action instructions include power on / off, waking up the control interface, controlling the control interface, waking up the screen, waking up the voice interaction system, voice interaction, voice broadcast and opening / closing the door.

[0011] In the specific implementation of the above control device, both the projection module and the recognition module are communicatively connected to the first MCU through circuits integrated in the PCB.

[0012] In a second aspect, the present invention provides an electrical appliance, which includes an electrical appliance body and the above-mentioned control device. The electrical appliance body includes a second MCU, and the first MCU is communicatively connected to the second MCU;

[0013] The first MCU transmits the action instruction to the second MCU, and the second MCU controls the electrical appliance to perform corresponding actions according to the action instruction; or the first MCU controls the projection module and / or the recognition module to perform corresponding actions according to the action instruction.

[0014] In the specific implementation of the above electrical appliance, the action instruction includes waking up the control interface;

[0015] The first MCU can determine whether to pop up the control interface according to the control information of the user in the projection area recognized by the recognition module.

[0016] In the specific implementation of the above electrical appliance, when the recognition module recognizes that the user stays in the projection area for more than a first preset duration, continuously touches the projection area not less than a first preset number of times, writes an opening instruction or writes an opening symbol in the projection area, then controls to pop up the control interface.

[0017] In the specific implementation of the above electrical appliance, the electrical appliance has a child lock function. After the child lock function is turned on, it controls that the control interface cannot pop up; and / or

[0018] When the recognition module recognizes that there are children and / or pets in the projection area, it controls that the control interface cannot pop up.

[0019] In the specific implementation of the above electrical appliance, the electrical appliance is a shoe washing machine, a washing machine, a dryer, a care machine, a dishwasher, a steam oven, an oven, a refrigerator, a microwave oven, a console, a refrigerator or a computer.

[0020] In the case of adopting the above technical solution, the control device of the present invention includes a PCB, a projection module, a recognition module and a first MCU; the projection module, the recognition module and the first MCU are all integrated on the PCB, and both the projection module and the recognition module are communicatively connected to the first MCU; the projection module is used to project a light beam to form a projection area, the recognition module can recognize the control information in the projection area, and transmit the recognized control information to the first MCU, and the first MCU determines the action instruction that the device needs to execute according to the control information.

[0021] Each module is integrated on the PCB, eliminating the need for wiring harnesses. This can ensure stable signal transmission between modules and guarantee the stability of the control device during operation. Moreover, without a wiring harness, the control device is relatively small in size, making its installation simple and reducing the design cost. In addition, the control device is adaptable to different types of complete machines, thus having a wide range of applications. Description of the Drawings

[0022] The preferred embodiments of the present invention will be described below with reference to the drawings, in which:

[0023] Figure 1 is a schematic structural diagram of the control device provided by the present invention;

[0024] Figure 2 are flowcharts of the control methods provided in the first and second embodiments of the present invention;

[0025] Figure 3 is a flowchart of the control method provided in the third embodiment of the present invention.

[0026] 1. PCB; 2. Projection module; 3. Identification module; 4. First MCU. Detailed Embodiments

[0027] The preferred embodiments of the present invention will be described below with reference to the drawings. Those skilled in the art should understand that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.

[0028] It should be noted that in the description of the present invention, the terms indicating directions or positional relationships such as "up", "down", "left", "right", "inside", "outside", etc. are based on the directions or positional relationships shown in the drawings. This is only for convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0029] Furthermore, it should be noted that in the description of the present invention, unless otherwise clearly defined and limited, the terms "installation", "setting", "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, and can also be the communication inside two elements. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0030] To solve the problems of complex design, low reliability, and high cost in the existing human-computer interaction methods. Detailed Embodiment One

[0032] As Figure 1 shown, this embodiment discloses a control device, which includes a PCB 1, a projection module 2, an identification module 3, and a first MCU 4.

[0033] The projection module 2, the identification module 3, and the first MCU 4 are all integrated on the PCB 1. The projection module 2 and the identification module 3 are both communicatively connected to the first MCU 4. Specifically, the projection module 2 and the identification module 3 are both communicatively connected to the first MCU 4 through lines integrated in the PCB 1.

[0034] Integrating each module on the PCB 1 eliminates the need to lay out wire harnesses, which can make the signal transmission between modules more stable and ensure the stability of the control device during operation. Moreover, the control device without wire harnesses is relatively small as a whole, making its installation relatively simple and also reducing the design cost. In addition, this control device is adaptable to different types of complete machines, making its application range relatively wide.

[0035] The projection module 2 is used to project a light beam to form a projection area. The identification module 3 can identify the control information within the projection area and transmit the identified control information to the first MCU 4. The first MCU 4 determines the action instruction that the device needs to execute according to the control information. Specifically, the control information is at least one of limb movement, temperature information, voice information, facial information, and pupil information. The identification module 3 is at least one of a laser rangefinder, an infrared detector, a motion sensor, a millimeter-wave radar, a long-distance infrared thermometer, a face recognition sensor, and a pupil recognition sensor. Specifically, when the control information is limb movement, the identification module 3 is at least one of a laser rangefinder, an infrared detector, a motion sensor, and a millimeter-wave radar; when the control information is temperature information, the identification module 3 is specifically a long-distance infrared thermometer; when the control information is facial information, the identification module 3 is specifically a face recognition sensor; when the control information is pupil information, the identification module 3 is specifically a pupil recognition sensor.

[0036] The action instructions include power on / off, waking up the control interface, controlling the control interface, waking up the screen, waking up the voice interaction system, voice interaction, voice broadcast, and opening / closing the door. When the action instruction includes power on / off, in the case of power off, the control device is also in the standby state. When the recognition module 3 recognizes the power on information in the projection area, the first MCU 4 determines it as a power on instruction according to the power on information, and then the first MCU 4 sends the power on instruction to the controller of the device, and the controller controls the device to perform the power on action. When the recognition module 3 recognizes the power off information in the projection area, the first MCU 4 determines it as a power off instruction according to the power off information, and then the first MCU 4 sends the power off instruction to the controller of the device, and the controller controls the device to perform the power off action. When the recognition module 3 recognizes the information of waking up the control interface in the projection area, the first MCU 4 determines it as an instruction to wake up the control interface according to the information of waking up the control interface, and then the first MCU controls the projection module 2 to project the control interface, or, then the first MCU 4 sends the instruction to wake up the control interface to the controller of the device, and the controller controls the device to pop up the control interface.

[0037] When the recognition module 3 recognizes the information of controlling the control interface in the projection area, the first MCU 4 determines the action instruction that the device needs to perform according to the control information. When the recognition module 3 recognizes the information of waking up the screen in the projection area, the first MCU 4 generates an instruction to wake up the screen according to the information of waking up the screen, and transmits the instruction to wake up the screen to the controller of the device, and the controller controls the device to perform the action of waking up the screen. When the recognition module 3 recognizes the information of waking up the voice interaction system in the projection area, the first MCU 4 generates an instruction to wake up the voice interaction system according to the information of waking up the voice interaction system, and transmits the instruction to wake up the voice interaction system to the controller of the device, and the controller controls the device to perform the action of waking up the voice interaction system. When the recognition module 3 recognizes the information of voice interaction in the projection area, the first MCU 4 determines the action instruction that the device needs to perform according to the information of voice interaction, and then the first MCU 4 transmits the action instruction to the controller of the device, and the controller controls the device to execute the action instruction. When the recognition module 3 recognizes the information of voice broadcast in the projection area, the first MCU 4 generates a voice broadcast instruction, and then the first MCU 4 transmits the voice broadcast instruction to the controller of the device, and the controller controls the speaker of the device to perform voice broadcast. When the recognition module 3 recognizes the information of opening the door in the projection area, the first MCU 4 generates an opening door action instruction according to the opening door information, and transmits it to the controller of the device, and the controller controls the device to open the door. Specific Embodiment 2

[0039] This embodiment also discloses an electrical appliance, which includes an electrical appliance body and a control device as in Embodiment 1. The electrical appliance body includes a second MCU, and the first MCU is communicatively connected to the second MCU; the first MCU 4 transmits an action instruction to the second MCU, and the second MCU controls the electrical appliance to perform corresponding actions according to the action instruction; or, the first MCU 4 controls the projection module 2 and / or the recognition module 3 to perform corresponding actions according to the action instruction.

[0040] Specifically, when it comes to the action content that requires the projection module 2 to project a control interface or a projection area and requires the recognition module to recognize the control interface and the projection area projected by the projection module 2, the first MCU 4 directly controls the projection module 2 and the recognition module 3 to directly perform actions, and other action instructions are transmitted to the second MCU, and the second MCU controls the electrical appliance to execute the action instructions.

[0041] The electrical appliance is specifically a center console, which can specifically be the center console of a vehicle or the center console of factory equipment; in this embodiment, the center console of a vehicle is used for illustration.

[0042] Specifically, the control information is specifically facial information and voice interaction information, and the recognition module 3 is a face recognition sensor and a voice pickup sensor. The action instructions include waking up the voice interaction system, voice interaction, and voice broadcast. When the recognition module 3 recognizes the information for waking up the voice interaction system in the projection area, the first MCU 4 generates an instruction for waking up the voice interaction system according to the information for waking up the voice interaction system, and transmits the instruction for waking up the voice interaction system to the second MCU, and the second MCU controls the vehicle to wake up the voice interaction system. When the recognition module 3 recognizes the information for voice interaction in the projection area, the first MCU 4 determines the action instruction according to the voice interaction information, and transmits the action instruction to the second MCU, and the second MCU controls the vehicle to perform operations on the voice interaction content. When the recognition module 3 recognizes the information for voice broadcast in the projection area, the first MCU 4 obtains a voice broadcast instruction according to the voice broadcast information, and transmits the voice broadcast instruction to the second MCU, and the second MCU controls the speaker of the vehicle to perform voice broadcast.

[0043] Taking the wake-up voice interaction system as an example, specifically, after the user's face moves into the projection area and the recognition module 3 recognizes the user's face, the recognized information is transmitted to the first MCU 4. After the first MCU 4 determines that it is a legitimate user (the user's information is stored in the first MCU 4 in advance, and the information recognized by the recognition module 3 can be compared. After confirmation, the recognized user is determined to be a legitimate user), it generates a wake-up voice interaction system instruction and transmits the wake-up voice interaction system instruction to the second MCU. The second MCU controls the wake-up of the vehicle's voice interaction system. Then, the voice pickup sensor of the recognition module 3 picks up the user's voice and transmits it to the first MCU 4. The first MCU 4 analyzes and processes it to obtain an action instruction, and transmits the action instruction to the second MCU. The second MCU controls the vehicle to execute the content of the action instruction. Specific Embodiment 3

[0045] This embodiment also discloses an electrical appliance, which includes an electrical appliance body and a control device as described in Specific Embodiment 1. The electrical appliance body includes a second MCU, and the first MCU is communicatively connected to the second MCU; the first MCU 4 transmits the action instruction to the second MCU, and the second MCU controls the electrical appliance to perform corresponding actions according to the action instruction; or, the first MCU 4 controls the projection module 2 and / or the recognition module 3 to perform corresponding actions according to the action instruction.

[0046] Specifically, when it comes to the actions that require the projection module 2 to project a control interface or a projection area and the recognition module to recognize the control interface and the action content of the projection area projected by the projection module 2, the first MCU directly controls the projection module 2 and the recognition module 3 to directly perform actions. Other action instructions are all transmitted to the second MCU, and the second MCU controls the electrical appliance to execute the action instructions.

[0047] The electrical appliance is specifically a household electrical appliance, specifically a washing machine, a shoe washing machine, a clothes dryer, a nursing machine, a dishwasher, a steam oven, an oven, a refrigerator, a microwave oven, a refrigerator or a computer.

[0048] When the household electrical appliance is specifically an embedded household electrical appliance, the projection area formed by the projection module 2 projecting the light beam is on the ground, and the control information includes waking up the control interface and controlling the control interface.

[0049] Regarding the projection area, it should be noted that although it is formed on the ground in this embodiment, this is not a limitation of the present invention. Without departing from the principle of the present invention, in other embodiments, those skilled in the art can also choose to form the projection area on the wall surface or the cabinet surface, etc. This does not deviate from the basic principle of the present invention and will fall within the protection scope of the present invention.

[0050] The first MCU 4 can determine whether to pop up the control interface according to the actions of the user in the projection area recognized by the recognition module 3.

[0051] That is, the control method of the household appliance includes: determining whether to pop up the control interface according to the actions of the user in the projection area to control the household appliance. Among them, the projection module 2 projects a light beam to form a projection area, the recognition module 3 can recognize the control information in the projection area, and transmit the recognized control information to the first MCU 4. The first MCU 4 determines an action instruction according to the control information, and then the second MCU of the household appliance controls the household appliance to execute the action instruction.

[0052] The projection module 2 can also project a standby interface. Under normal conditions, the standby interface is projected, and the control interface is projected only when a control interface pop-up instruction is received. Specifically, there is a projection area on the ground, and both the standby interface and the control interface are located within the projection area. The control device is specifically set at the top of the front side of the household appliance (in other embodiments, it can also be set at the bottom, front side or other positions of the household appliance, as long as it can project a light beam to form a projection area on the ground), which can enable the projection module 2 to project better on the ground. The projection module 2 not only projects a light beam on the ground to form a projection area, but also can project the content of the standby interface and the control interface. Specifically, within the projection area, after operating the control interface, the specific content of the operation is also displayed. Among them, the projection module 2 can adopt a combined structure of an optical engine and a lens group. The light emitted by the optical engine is projected onto the ground through a series of lenses and plane mirrors of the lens group to form a projection area, a standby interface, a control interface, etc.

[0053] Regarding the projection module 2, it should be noted that although in this embodiment, it includes an optical engine and a lens, this is not a limitation of the present invention. Without departing from the principle of the present invention, in other embodiments, those skilled in the art can choose the projection module 2 to adopt any structure in the prior art, as long as it can project the standby interface and the control interface onto the ground for the user to view and operate; specifically, it can be the projection module of a projector. These do not depart from the basic principle of the present invention, and thus will fall within the protection scope of the present invention.

[0054] The projection module 2 is arranged above the recognition module 3, that is, the PCB 1 is arranged vertically. Of course, this is only a preferred implementation manner for facilitating the projection module 2 to project the standby interface and the control interface onto the projection area on the ground. In actual applications, the projection module 2 can also be arranged at the same height as the recognition module 3. Those skilled in the art can flexibly set the relative positions of the projection module 2 and the recognition module 3 in actual applications, as long as the standby interface and the control interface can be projected onto the ground through the projection module 2, and the recognition module 3 can recognize the limb movement information of the user. Such changes in the relative positions between the projection module 2 and the recognition module 3 do not deviate from the technical solution of the present invention and should be limited within the protection scope of the present invention.

[0055] The recognition module 3 specifically includes a camera element and an infrared sensing element. Both the camera element and the infrared sensing element are communicatively connected to the first MCU 4. The camera element can collect the image information of the user's limb, and the infrared sensing element can collect the position information of the user's limb. The first MCU 4 can perform analysis and processing based on the image information and the position information.

[0056] Among them, the infrared sensing element can be a combined component of an infrared laser generator and an infrared sensor. The camera element can be an infrared camera. The infrared laser generator can project an infrared sensing area on the projection area on the ground. Specifically, the infrared sensing area is conical. The target area generated by the infrared sensing area completely covers the projection area or accommodates the projection area therein, so that the user can be sensed by the infrared sensor when operating at any position of the standby interface or the control interface. By setting the time threshold for emitting infrared waves to receiving echo waves, the specific sensing height can be designed, and the sensing height can be set to 3 cm - 20 cm.

[0057] Of course, the height of the infrared sensing area mentioned above is only exemplary and can also be other heights. Those skilled in the art can flexibly set the height of the infrared sensing area in actual applications. Such changes in height do not deviate from the technical solution of the present invention and should be limited within the protection scope of the present invention. Of course, the above-mentioned recognition module 3 can also adopt other structures, as long as the recognition module 3 can recognize the limb information of the user to operate the household appliance.

[0058] The control method of the household appliance will be described in detail below with several specific embodiments:

[0059] Embodiment 1

[0060] The control method of the household appliance includes the following steps:

[0061] Determine whether to pop up the control interface according to the actions of the user in the projection area to control the household appliance.

[0062] As shown Figure 2 in the figure, "determining whether to pop up the control interface according to the user's actions in the projection area" specifically includes the following steps:

[0063] When the user continuously touches the projection area not less than the first preset number of times or stays in the projection area for more than the first preset duration, the control interface is popped up; specifically, when the recognition module recognizes that the user continuously touches the projection area not less than the first preset number of times or stays in the projection area for more than the first preset duration, the first MCU analyzes and processes the recognized information to obtain an instruction to pop up the control interface, and controls the projection module to project the control interface on the ground.

[0064] Preferably in this embodiment, when the user touches the projection area twice continuously (in other embodiments, the number of touches can also be three or four, etc.) or stays in the projection area for more than the first preset duration (wherein, preferably the first preset duration in this embodiment is 8 s, and in other embodiments the first preset duration can also be 10 s or 12 s, etc.), the control interface is automatically popped up.

[0065] "Determining whether to pop up the control interface according to the user's actions in the projection area" specifically further includes the following steps:

[0066] When the user writes an opening instruction or an opening symbol in the projection area, the control interface is popped up. Specifically, when the recognition module recognizes that the user writes an opening instruction or an opening symbol in the projection area, the first MCU analyzes and processes the recognized information to obtain an instruction to pop up the control interface, and controls the projection module to project the control interface on the ground.

[0067] Preferably, the opening instruction can specifically be "pop up", "switch", etc., and of course it can also be other text instructions; the opening symbol can specifically be "K", "T", etc., and of course it can also be symbols of other shapes. The imaging element can collect the image information of the user's limb, that is, collect the limb movement information, and recognize and determine whether it is an opening instruction or an opening symbol. If it is an opening instruction or an opening symbol, the control interface is popped up.

[0068] After the control interface is popped up, the user can operate the buttons on the control interface according to the parameter information, so that the household appliances operate according to the user's requirements.

[0069] In addition, after the control interface automatically pops up, if the user does not perform any key operations within the fifth preset duration (in this embodiment, the fifth preset duration is preferably 8 s, and in other embodiments, the fifth preset duration can also be 10 s, 12 s, etc.), the control interface will automatically exit and switch to the standby interface. The user's lack of operation may be due to accidental touch, causing the control interface to pop up, or the user may have something urgent and need to leave the scene and no longer needs to operate the control interface, and actually no operation has been performed; switching to the standby interface can prevent pets or children from accidentally operating.

[0070] Furthermore, after the user performs a series of operations but does not start, that is, although a series of operations have been performed, the household appliance does not actually operate according to the operations; if after performing this series of operations and within the sixth preset duration (in this embodiment, the sixth preset duration is preferably 5 s, and in other embodiments, the sixth preset duration can also be 8 s, 10 s, etc.), the user does not start, that is, does not operate the start key, then it switches back to the standby interface.

[0071] After the user performs a series of operations and starts the household appliance, that is, after operating the start key, the control interface switches to the parameter display interface, and automatically displays the operating parameter information (specifically, it can display the currently running program, running duration, remaining duration, temperature, etc.).

[0072] Wherein, the household appliance has a child lock function, and the control method of the household appliance further includes the following steps:

[0073] After the child lock function is turned on, the control interface cannot pop up. That is, the priority of the child lock function is higher than that of other functions. Specifically, a child lock key is projected in the projection area, and the child lock function can only be turned off by touching the child lock key three times continuously. The purpose is to make the closing method of the child lock key more complex, so that children cannot easily turn off the child lock function, and accidental operations can be avoided. At the same time, it can also avoid accidental operations caused by the family pet staying in the projection area for a long time.

[0074] Regarding the closing method of the child lock function, it should be noted that although in this embodiment, it is turned off by touching three times continuously, this is not a limitation of the present invention. Without departing from the principle of the present invention, those skilled in the art, in other embodiments, can also choose to set the closing method of the child lock to touch twice continuously, and the duration of the first or second touch is not less than the third preset duration, where the third preset duration is preferably 8 s, 10 s, 15 s, etc. This does not deviate from the basic principle of the present invention, and thus will fall within the protection scope of the present invention.

[0075] Regarding the child lock function, it should be noted that although there is a child lock key in the projection area in this embodiment, this is not a limitation of the present invention. Without departing from the principle of the present invention, in other embodiments, those skilled in the art can also choose to set the child lock key on the body, specifically as a mechanical button or a touch button. The child lock function can be turned off only by pressing the child lock key on the body, which does not deviate from the basic principle of the present invention and thus will fall within the protection scope of the present invention.

[0076] Embodiment 2

[0077] The control method of this household appliance includes the following steps:

[0078] Determine whether to pop up the operation interface according to the user's actions in the projection area.

[0079] As Figure 2 shown, "determine whether to pop up the operation interface according to the user's actions in the projection area" specifically includes the following steps:

[0080] If the user continuously touches the projection area not less than the first preset number of times or stays in the projection area for more than the first preset duration, the operation interface will pop up. Specifically, when the recognition module recognizes that the user continuously touches the projection area not less than the first preset number of times or stays in the projection area for more than the first preset duration, the first MCU analyzes and processes the recognized information, obtains an instruction to pop up the operation interface, and controls the projection module to project the operation interface on the ground.

[0081] Preferably in this embodiment, if the user continuously touches the projection area twice (in other embodiments, the number of touches can also be three or four, etc.) or stays in the projection area for more than the first preset duration (wherein, the first preset duration in this embodiment is preferably 8s, and in other embodiments, the first preset duration can also be 10s or 12s, etc.), the operation interface will automatically pop up.

[0082] "Determine whether to pop up the operation interface according to the user's actions in the projection area" specifically further includes the following steps:

[0083] When the user writes an opening instruction or an opening symbol in the projection area, the operation interface will pop up. Specifically, when the recognition module recognizes that the user writes an opening instruction or an opening symbol in the projection area, the first MCU analyzes and processes the recognized information, obtains an instruction to pop up the operation interface, and controls the projection module to project the operation interface on the ground.

[0084] Preferably, the opening instruction can specifically be "pop up", "switch", etc., and of course it can also be other text instructions; the opening symbol can specifically be "K", "T", etc., and of course it can also be other shaped symbols. The imaging element can collect the image information of the user's limb, that is, collect the limb movement information, and identify whether it is an opening instruction or an opening symbol. If it is an opening instruction or an opening symbol, the control interface will pop up.

[0085] After the control interface pops up, the user can operate the buttons on the control interface according to the parameter information, so that the household appliance operates according to the user's requirements.

[0086] In addition, after the control interface pops up automatically, if the user does not perform any button operations within the fifth preset duration, the control interface will automatically exit and switch to the standby interface. The user's inactivity may be due to the user accidentally touching and causing the control interface to pop up, or the user may have something urgent to leave the scene and no longer needs to operate the control interface, and actually no operation has been performed; switching to the standby interface can prevent pets or children from accidentally operating.

[0087] Furthermore, after the user performs a series of operations but does not start, that is, although a series of operations have been performed, the household appliance does not actually operate according to the operations; if after performing this series of operations and the user does not start within the sixth preset duration, that is, does not operate the start button, then switch to the standby interface.

[0088] After the user performs a series of operations and starts the household appliance, that is, after operating the start button, the control interface switches to the parameter display interface and automatically displays the running parameter information (specifically, it can display the currently running program, running duration, remaining duration, temperature, etc.).

[0089] The control method of the household appliance further includes the following steps:

[0090] When it is detected that there are children and / or pets in the projection area, the control interface cannot pop up. Specifically, the imaging element of the limb induction and recognition component can collect the scene in the projection area in real time and judge the content of the scene. The specific judgment method is to identify by taking pictures of objects, and taking pictures of objects to identify is a specific algorithm of the prior art, and its specific algorithm will not be elaborated in this embodiment. When there are children and / or pets in the scene photographed in the projection area, the control interface cannot pop up. In order to avoid toy dolls or toy animals from appearing in the projection area and causing unnecessary misjudgment; a life detector can be set on the household appliance, which can detect whether there is life in the projection area; when there are children and / or pets in the scene photographed in the projection area, but no vital signs are detected in the projection area, then the control interface can be automatically popped up.

[0091] Embodiment III

[0092] The control method of the household appliance includes the following steps:

[0093] Determine whether to pop up the control interface according to the user's actions in the projection area.

[0094] As Figure 3 shown, "determine whether to pop up the control interface according to the user's actions in the projection area" specifically includes the following steps:

[0095] If the user touches continuously in the projection area not less than the first preset number of times, the control interface is popped up. Specifically, when the recognition module recognizes that the user touches continuously in the projection area not less than the first preset number of times, the first MCU analyzes and processes the recognized information, obtains an instruction to pop up the control interface, and controls the projection module to project the control interface on the ground.

[0096] Preferably in this embodiment, if the user touches continuously twice in the projection area, the control interface is automatically popped up. Of course, in other embodiments, the user can also touch continuously three or four times in the projection area to automatically pop up the control interface.

[0097] "Determine whether to pop up the control interface according to the user's actions in the projection area" specifically further includes the following steps:

[0098] When the user writes an opening instruction or an opening symbol in the projection area, the control interface is popped up. Specifically, when the recognition module recognizes that the user writes an opening instruction or an opening symbol in the projection area, the first MCU analyzes and processes the recognized information, obtains an instruction to pop up the control interface, and controls the projection module to project the control interface on the ground.

[0099] Preferably, the opening instruction can specifically be "pop up", "switch", etc., and of course it can also be other text instructions; the opening symbol can specifically be "K", "T", etc., and of course it can also be symbols of other shapes. The image information of the user's body can be collected by the camera element, that is, the limb movement information is collected, and it is recognized to determine whether it is an opening instruction or an opening symbol. If it is an opening instruction or an opening symbol, the control interface is popped up.

[0100] After the control interface is popped up, the user can operate the buttons on the control interface according to the parameter information so that the household appliance operates according to the user's requirements.

[0101] In addition, after the control interface pops up automatically, if the user does not perform any key operations within the fifth preset time period, the control interface will automatically exit and switch to the standby interface. The user's lack of operation may be due to accidental touch by the user, causing the control interface to pop up, or the user may have something urgent to attend to and need to leave the scene, no longer requiring operation on the control interface and not actually performing any operations; switching to the standby interface can prevent pets or children from accidentally operating it.

[0102] Furthermore, after the user performs a series of operations but does not start the appliance, that is, although a series of operations have been performed, the household appliance does not actually operate according to the operations; if after performing this series of operations and the user does not start within the sixth preset time period, that is, does not operate the start key, then it switches to the standby interface.

[0103] After the user performs a series of operations and starts the household appliance, that is, after operating the start key, the control interface switches to the parameter display interface, automatically displaying the parameter information of the operation (specifically, it can display the currently running program, running duration, remaining duration, temperature, etc.).

[0104] The control method of the household appliance further includes the following steps:

[0105] When staying in the projection area for more than the second preset time period, the control interface cannot pop up.

[0106] When the body sensing and recognition component captures that the user's body stays for a long time and exceeds the second preset time period, but does not use the continuous touch method; if the household appliance is a dishwasher, at this time the user may just be cooking or cleaning in the kitchen and not operating the dishwasher to wash dishes. If the household appliance is a washing machine, at this time the user may just be doing other things on the balcony or in the bathroom and not operating the washing machine for washing.

[0107] So far, the technical solution of the present invention has been described in conjunction with the preferred embodiments shown in the drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of the present invention.

Claims

1. A control device, characterized in that, it includes a PCB (1), a projection module (2), an identification module (3) and a first MCU (4); the projection module (2), the identification module (3) and the first MCU (4) are all integrated on the PCB (1), and the projection module (2) and the identification module (3) are both communicatively connected to the first MCU (4); the projection module (2) is used to project a light beam to form a projection area, the identification module (3) can identify the control information in the projection area, and transmit the identified control information to the first MCU (4), and the first MCU (4) determines the action instruction that the device needs to execute according to the control information.

2. The control device according to claim 1, characterized in that, the control information is at least one of body movements, temperature information, facial information, voice information and pupil information.

3. The control device according to claim 1, characterized in that, the identification module (3) is at least one of a laser rangefinder, an infrared detector, a motion sensor, a millimeter wave radar, a long-distance infrared thermometer, a face recognition sensor and a pupil recognition sensor.

4. The control device according to claim 1, characterized in that, the action instructions include power on / off, wake up the control interface, control the control interface, wake up the screen, wake up the voice interaction system, voice interaction, voice broadcast and door opening / closing.

5. The control device according to claim 1, characterized in that, the projection module (2) and the identification module (3) are both communicatively connected to the first MCU (4) through the circuits integrated in the PCB (1).

6. An electrical appliance, characterized in that, it includes an electrical appliance body and the control device according to any one of claims 1-5, the electrical appliance body includes a second MCU, and the first MCU is communicatively connected to the second MCU; the first MCU (4) transmits the action instruction to the second MCU, and the second MCU controls the electrical appliance to perform corresponding actions according to the action instruction; or the first MCU (4) controls the projection module (2) and / or the identification module (3) to perform corresponding actions according to the action instruction.

7. The electrical appliance according to claim 6, characterized in that, the action instruction includes waking up the control interface; the first MCU (4) can determine whether to pop up the control interface according to the control information of the user in the projection area identified by the identification module (3).

8. The electrical appliance according to claim 7, characterized in that, when the identification module (3) identifies that the user stays in the projection area for more than a first preset duration, touches continuously in the projection area not less than a first preset number of times, writes an opening instruction in the projection area or writes an opening symbol in the projection area, then controls to pop up the control interface.

9. The electrical appliance according to claim 8, characterized in that, the electrical appliance has a child lock function, and after the child lock function is turned on, it controls that the control interface cannot pop up; and / or When the recognition module (3) recognizes that there are children and / or pets in the projection area, the control interface is not allowed to pop up.

10. The electrical appliance according to claim 9, characterized in that the electrical appliance is a shoe washing machine, a washing machine, a clothes dryer, a care machine, a dishwasher, a steam oven, an oven, a refrigerator, a microwave oven, a console, a refrigerator or a computer.

Images