reference numerals	Name (R)	Reference numerals	Name (R)
				1	Base seat	11	Shielding case
2	Support frame	12	Power input board
				3	First driving device	13	Weight member
4	Display device	14	Light source unit
				5	Image acquisition device	15	Light guide member
6	Face recognition module	201	Frame body part
				7	Gesture recognition module	202	Turntable part
8	First magnet	401	Second mounting surface
				9	Charging coil	2011	First mounting surface
10	Battery cell	2012	Heat dissipation convex rib

The realization, the functional characteristics and the advantages of the utility model are further explained by combining the embodiment and referring to the attached drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1 and 2, an embodiment of the present invention provides a middle island display device, which includes:

abase 1;

the bracket 2 is rotatably connected to thebase 1;

thefirst driving device 3, thefirst driving device 3 is connected with the bracket 2, thefirst driving device 3 is used for driving the bracket 2 to rotate relative to thebase 1;

thedisplay device 4, thedisplay device 4 is detachably connected to the bracket 2;

acoustic sensing means (not shown in the figures);

an audio processing module (not shown in the figure), electrically connected to the sound sensing device and thefirst driving device 3;

the sound sensing device is used for acquiring a target sound signal within a preset range and outputting the target sound signal to the audio processing module; the audio processing module is configured to determine a target sound source angle corresponding to the target sound signal, and output a corresponding first rotation signal to thefirst driving device 3 according to the target sound source angle, so as to control thefirst driving device 3 to drive the bracket 2 to rotate relative to thebase 1 according to the target sound source angle.

In this embodiment, the bracket 2 may be in the shape of a shell as shown in the figure, the related devices may be accommodated in the inner space of the bracket 2, and the bracket 2 may be rotatably connected to thebase 1 through a bearing; thefirst driving device 3 may include a rotating motor and a transmission structure (such as a gear assembly, a worm and gear assembly, etc.) used therewith.Display device 4 can be a terminal equipment that has demonstration and interactive function, for example a panel computer, and its one side that dorsad the display screen accessible buckle connect, threaded fastener connects, magnetism inhale mode detachably such as connect and connect on support 2 to in-process quick assembly disassembly such as maintenance, transport,display device 4 upgrade.

The target sound signal acquired by the sound sensing device may specifically be an electric signal corresponding to the sound tracks of various sounds such as footsteps, talking sounds and the like emitted when the visitor walks within a preset range; the audio processing module can prestore a part of audio track parameters in a mode of establishing a database, and when a target sound signal transmitted by the sound sensing device is matched with the prestoring audio track parameters, the audio processing module can perform filtering and denoising processing on the target sound signal through a preset algorithm and then further analyze the target sound signal so as to determine a target sound source angle corresponding to the target sound signal, namely determine the direction of a main body sending the target sound signal. The target sound source angle may be an included angle between a straight line from the sound source to an origin of the preset planar coordinate system and a preset direction, and the preset direction may be a current orientation of the display screen of thedisplay device 4.

Regarding how the audio processing module determines the target sound source angle corresponding to the target sound signal, one possible implementation manner is as follows:

the audio processing module performs data analysis on the track parameters of the target sound signal, first determines whether the target sound signal belongs to a far-field plane wave or a near-field spherical wave, then calculates the delay Time of the target sound signal from the sound source to the sound sensing device by a GCC generalized Cross-Correlation algorithm (GCC generalized Cross-Correlation) based on the sound source type, and calculates the position of the sound source by a TDOA (Time Difference of Arrival) positioning method (specifically, calculates the angle of the sound source by multiplying the delay Time Difference by the sound velocity, and determines the sound source position based on the sound source angle and the sound source distance detected by the sound sensing device).

After the target sound source angle is obtained, the audio processing module can control the driving device to act so as to rotate thedisplay device 4 along with the support 2 to the position corresponding to the target sound source angle, so that the display screen of thedisplay device 4 is opposite to the target main body emitting the target sound signal, the product image and the audio are actively displayed to the target main body (which can be a passerby), and the target main body can conveniently perform interactive operation on thedisplay device 4; in addition, based on the audio processing function, the user can also control thedisplay device 4 by sending a voice command during the interactive operation. It should be noted that, when the target main part is in the walking state, a series of operations such as above-mentioned target sound signal acquisition, target sound source angle determination can be continuously gone on to this target main part, thereby steerable drive arrangement continuously drivesdisplay device 4 and rotates, makedisplay device 4's display screen just right with the target main part in the motion all the time, realize the automatic tracking function, makedisplay device 4's show content can attract the visitor better, also be more convenient for the visitor to carry out interactive operation ondisplay device 4 anytime and anywhere, thereby promoted its propaganda show effect when improving this zhongdao display device intelligent degree.

The first rotation signal sent by the audio processing module to the driving device may specifically include a plurality of pulse signals, and a rotation angle of the driving device corresponding to each pulse signal may be preset, so that the driving device may be rotated by a corresponding angle.

It can be understood that the signal transmission processes involved in the above operations can be automatically executed by invoking a preset program in a controller (specifically, an MCU microcontroller, which may include a main control board, where the main control board is in communication connection with a corresponding device).

Further, referring to fig. 1 and 2, in an exemplary embodiment, the island display device further includes an image acquisition device 5 and aface recognition module 6, wherein theface recognition module 6 is electrically connected to the image acquisition device 5 and thefirst driving device 3;

the image acquisition device 5 is used for acquiring a target image in a preset range and outputting the target image to theface recognition module 6; theface recognition module 6 is configured to recognize a target face image in the target image, and theface recognition module 6 is configured to output a corresponding second rotation signal to thefirst driving device 3 according to a position of the target face image in the target image, so as to control thefirst driving device 3 to drive the bracket 2 to rotate relative to thebase 1, so that thedisplay device 4 is angularly opposite to the face image corresponding to the target face image.

This embodiment adds a face recognition, processing and tracking function to the voice recognition, processing and tracking function provided in the previous embodiment. Specifically, the image acquisition device 5 may include a camera, and theface recognition module 6 may perform filtering and denoising processing on a target image acquired by the image acquisition device 5 through a preset algorithm to identify a target face image in the target image, and determine a face image angle corresponding to the target face image, that is, determine the orientation of a main body corresponding to the target face image. The face image angle may be an included angle between a straight line from the corresponding main body to an origin of the preset planar coordinate system and a preset direction, and the preset direction may be a current orientation of the display screen of thedisplay device 4.

As to how theface recognition module 6 determines the face image angle corresponding to the target face image, one possible implementation manner is as follows:

firstly, determining the transverse straight-line distance from a target face image to the center of a target image as an X-axis distance; then, according to the scaling of the target face image relative to the preset face image and the linear distance corresponding to the scaling, determining the shortest linear distance from a target main body corresponding to the target face image to the image acquisition device 5 to be used as the Y-axis distance; and finally, based on the X-axis distance and the Y-axis distance, calculating an included angle between the corresponding target main body and the current orientation of the image acquisition device 5 by utilizing a trigonometric function, and further determining the face image angle corresponding to the target face image.

After the face image angle is obtained, theface recognition module 6 can control the driving device to act by sending a signal to the main control board, so that thedisplay device 4 is rotated together with the bracket 2 to a position corresponding to a target main body (which can be a passerby) corresponding to the target face image, a display screen of thedisplay device 4 is opposite to the target main body, a product image and an audio frequency are actively displayed on the target main body, and the target main body can be conveniently interactively operated on thedisplay device 4. It should be noted that, when the target subject is in a walking state, a series of operations such as the above-mentioned target face image acquisition, face image angle determination, etc. can be continuously performed for the target subject, thereby the controllable driving device continuously drives thedisplay device 4 to rotate, so that the display screen of thedisplay device 4 is always right opposite to the moving target subject, an automatic tracking function is realized, the display content of thedisplay device 4 can better attract visitors, and the visitors can perform interactive operation on thedisplay device 4 at any time and any place more conveniently, thereby the intelligent degree of the island display device is further improved, and the propaganda display effect is further improved.

The second rotation signal sent by theface recognition module 6 to the driving device through the main control board may specifically include a plurality of pulse signals, and the rotation angle of the driving device corresponding to each pulse signal may be preset, so that the driving device may be rotated by a corresponding angle.

Further, referring to fig. 1 and fig. 2, in an exemplary embodiment, the island display device further includes a gesture recognition module 7, the gesture recognition module 7 stores a preset gesture image, and the gesture recognition module 7 is electrically connected to the image acquisition device 5; the image acquisition device 5 is used for acquiring a target image within a preset range and outputting the target image to the gesture recognition module 7, and the gesture recognition module 7 is used for recognizing a target gesture image in the target image;

the gesture recognition module 7 is electrically connected with the audio processing module, and the gesture recognition module 7 is used for outputting a first starting signal to the audio processing module when the similarity between the target gesture image and the preset gesture image reaches a preset similarity threshold value so as to start the audio processing module;

and/or, the gesture recognition module 7 is electrically connected with theface recognition module 6, and the gesture recognition module 7 is configured to output a second start signal to theface recognition module 6 when the similarity between the target gesture image and the preset gesture image reaches a preset similarity threshold value, so as to start theface recognition module 6.

In a specific implementation process, a user can aim the hand at the image acquisition device 5 to enable the image acquisition device 5 to scan the hand motion, when the gesture recognition module 7 recognizes that the user gesture matches the data of the 'start gesture' stored in the memory through the image acquisition device 5, the gesture recognition module 7 can control the audio processing module and/or theface recognition module 6 to start by sending a signal to the main control board, and at this time, the audio processing module and/or theface recognition module 6 can automatically execute the audio and image processing operations in the above embodiment to start the sound and face image tracking function of the island display device. Similarly, when the gesture recognition module 7 recognizes that the user gesture matches the data of the "close gesture" stored in the memory through the image acquisition device 5, the gesture recognition module 7 may control the audio processing module and/or theface recognition module 6 to close by sending a signal to the main control board, at this time, the audio processing module and/or theface recognition module 6 does not perform the audio and image processing operations in the above embodiment, and thedisplay device 4 is fixed at the current angular position along with the bracket 2 and does not rotate any more.

In practical applications, the start and the stop of the audio processing module and theface recognition module 6 may be set to correspond to different preset gesture images, which is not limited herein.

Based on the above setting, the user can wake up or close the sound and face image tracking function at any time through gesture recognition, so that the flexible control of the Zhongdao display equipment is realized, and the problem that the user normally watches and controls because the support 2 rotates due to the interference of other sound signals or face images when the user performs interactive operation on thedisplay device 4 can be avoided, and the intelligent degree of the Zhongdao display equipment is further improved.

Optionally, referring to fig. 1 and 2, the middle island display device further includes a battery assembly, a charging interface is disposed on thebase 1, an input end of the charging interface is used for connecting an external power supply, an output end of the charging interface is electrically connected with a charging end of the battery assembly, and a discharging end of the battery assembly is electrically connected with at least thefirst driving device 3 and thedisplay device 4.

The battery assembly may specifically include abattery cell 10 and apower input board 12, and after the external power supply is connected to the battery assembly, thebattery cell 10 may be charged through thepower input board 12. Thebattery cell 10 is used for storing electric energy, and can still normally supply power to each device after the charging is stopped, so as to ensure the normal operation of the island display device.

Alternatively, referring to fig. 1 and 2, the stand 2 has afirst magnet 8 and thedisplay device 4 has a second magnet (not shown in the figures); thefirst magnet 8 and the second magnet attract each other to make thedisplay device 4 be adsorbed on the bracket 2.

Thefirst magnet 8 and the second magnet may be two magnetic members with mutually exclusive magnetism, or one of the two magnetic members may be a magnetic member and the other may be a metal member attracted by the magnetic member. Thedisplay device 4 and the bracket 2 can be quickly fixed and separated by the way that thefirst magnet 8 and the second magnet are mutually attracted.

Optionally, referring to fig. 1 and 2, the middle island display device further includes a chargingcoil 9, and the chargingcoil 9 is electrically connected with the battery assembly;

the support 2 has afirst mounting surface 2011, thedisplay device 4 has asecond mounting surface 401, the second mountingsurface 401 is used for being attached to thefirst mounting surface 2011, thefirst magnet 8 and the chargingcoil 9 are arranged on thefirst mounting surface 2011, the second magnet is arranged on the second mountingsurface 401, and the chargingcoil 9 is used for wirelessly charging thedisplay device 4 attached to thefirst mounting surface 2011.

Usable electromagnetic induction of chargingcoil 9 and inductive coupling technique carry out wireless charging to displaydevice 4, specifically,first magnet 8 and chargingcoil 9 all can set up on a side offirst installation face 2011second installation face 401 dorsad (be located the inside of support 2), whendisplay device 4 actuation is fixed in onfirst installation face 2011, the distance betweendisplay device 4 and the chargingcoil 9 satisfies wireless charging requirement promptly, can supply power and carry out wireless charging to displaydevice 4 through battery pack to chargingcoil 9 this moment, easy operation is simple accurate and has saved the required all kinds of wire rods of wired charging, the inside line space of walking of support 2 has been saved. The specific principle of wireless charging can be referred to in the prior art, and is not described herein.

Optionally, referring to fig. 1 and 2, the chinampa display apparatus further includes a second driving device (not shown in the drawings), the support 2 includes asupport body portion 201 and aturntable portion 202; wherein:

thefirst mounting surface 2011 is arranged on theturntable part 202, theturntable part 202 is rotatably connected to theframe part 201, and theframe part 201 is rotatably connected to thebase 1;

thefirst driving device 3 is connected with theframe part 201, and thefirst driving device 3 is used for driving theframe part 201 to rotate relative to thebase 1; the second driving device is connected to theturntable part 202, and the second driving device is used for driving theturntable part 202 to rotate relative to theframe part 201.

When thefirst magnet 8 and the chargingcoil 9 are both disposed on theturntable 202, theturntable 202 forms a charging magnet, so that the user can conveniently and fast attract and fix thedisplay device 4 on the charging magnet and perform wireless charging operation.

In addition, in the specific implementation process, the second driving device can be in communication connection with thedisplay device 4 through the main control board, the main control board can send corresponding signals to the second driving device according to the current display content of thedisplay device 4, and the second driving device is controlled to drive thedisplay device 4 to rotate by a corresponding angle, so that thedisplay device 4 can better present corresponding images on the display screen, that is, the angle of the display screen better meets the display requirement of the currently presented images (for example, thedisplay device 4 is rotated to be transversely placed on the display screen when the width of the currently presented images is large), and therefore the intelligent degree of the middle island display device is further improved, and the user experience is improved.

Optionally, referring to fig. 1 and 2, aheat dissipation rib 2012 is provided inside the bracket 2, and the battery assembly is disposed inside the bracket 2 and abuts against theheat dissipation rib 2012.

Theheat dissipation ribs 2012 can be integrally formed on the inner side wall of the bracket 2, or can be an aluminum profile heat dissipation plate connected to the inner side wall of the bracket 2, which can promote heat conduction of the battery assembly by increasing the surface area, thereby avoiding damage to related devices and potential safety hazards caused by excessive heat generation of the battery assembly in the using process.

Alternatively, referring to fig. 1 and 2, a shieldingcase 11 is disposed inside the bracket 2, and the shieldingcase 11 covers the battery pack.

In the specific implementation process, an installation groove can be formed in the inner side wall of the support 2 so that the battery pack can be clamped and fixed in the installation groove, and the shieldingcover 11 can be fixedly connected to the installation groove so that the battery pack is limited in the installation groove; the main control board can set up on the side of shield cover 11 battery pack dorsad toaccessible shield cover 11 separates main control board and battery pack, and the electromagnetic wave that avoids chargingcoil 9 to produce in carrying out wireless charging process to displaydevice 4 causes the interference to the inside circuit of support 2.

Optionally, referring to fig. 1 and 2, aweight 13 is provided inside thebase 1.

Theweight member 13 can make thebase 1 have a certain weight, thereby ensuring the stability of the middle island display device in the using process and preventing the middle island display device from toppling over.

Optionally, referring to fig. 1 and 2, the middle island display device further includes alight source 14 and alight guide member 15, thelight source 14 and thelight guide member 15 are disposed between thebase 1 and the support 2;

thelight source unit 14 is used for emitting a target light beam, and thelight guide member 15 is used for guiding the target light beam in a predetermined trajectory.

Thelight source 14 may be an LED lamp panel, which has a plurality of light beads emitting light beams with different colors; thelight guide member 15 may be a light guide band disposed around thebase 1, and thelight guide member 15 may cause the light beam emitted from thelight source 14 to be uniformly distributed on the surface of thelight guide member 15 through operations such as refraction and reflection, so as to form a predetermined light emitting body, thereby enhancing the visual effect.

In the concrete implementation process, still can carry out the electricity withlight source 14 through main control board and battery pack and be connected, the main control board can be according to battery pack's electric quantity condition output corresponding luminescent signal tolight source 14 to controllight source 14 and send the light beam of different colours, thereby can help the user to know battery pack's electric quantity condition directly perceivedly, and can remind the user in time to charge when battery pack electric quantity is not enough.

It should be noted that other contents of the display device of the present invention can be referred to in the prior art, and are not described herein again.

In addition, it should be noted that the descriptions related to "first", "second", etc. in the present invention are only used for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

Above only be the utility model discloses an optional embodiment to not consequently restrict the utility model discloses a patent range, all be in the utility model discloses a under the design, utilize the equivalent structure transform of doing of the contents of description and the attached drawing, or direct/indirect application all is included in other relevant technical field the utility model discloses a patent protection within range.