Multi-module cooperative control interactive demonstration device

Abstract

The invention particularly relates to a multi-module cooperative control interactive demonstration device. The device comprises a pickup module, a laser indication module, a multimedia control module and a cooperative control module. And the cooperative control module is used for performing intelligent adjustment according to the operation state of the speaker. When a speaker rotates the laser indication module, the cooperative control module controls the laser indication module to emit light beams, synchronously improves the noise threshold value of the pickup module, and reduces noise interference caused by rotation operation. When a speaker presses a page turning key of the multimedia control module, the multimedia control module executes a page turning operation, and the cooperative control module controls the pickup module to narrow the pickup angle when detecting the page turning operation, so that the key noise is further inhibited; in a non-operating state, a low power consumption mode is entered to extend endurance. According to the invention, integration and intelligent linkage of pickup, indication and multimedia control are realized, and the problems of dispersed operation, noise interference and insufficient energy consumption management in the prior art are solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of auxiliary speech equipment, and particularly relates to an interactive demonstration device with multi-module cooperative control. BACKGROUND

[0002] In the scenarios of conference speech, classroom teaching and public demonstration, a speaker usually needs to use a microphone for voice amplification, a laser pointer for pointing to the key content in a demonstration script, and a multimedia controller (such as a PPT page turner) for page turning or switching operation of the demonstration script. In the prior art, the microphone, the laser pointer and the multimedia controller mostly exist as independent devices, and the speaker often needs to hold or alternately operate multiple devices at the same time, which has the following disadvantages: (1) When the laser pointer or the multimedia controller is used, the key operation thereof is likely to produce mechanical noise, which is easily amplified by the microphone and affects the experience of the audience; (2) The speaker is likely to be distracted and affect the fluency and coherence of the speech when frequently switching or operating multiple devices during the speech; (3) The devices are usually independently powered and operated, lack unified management and coordination, are likely to increase energy consumption, and are not convenient to use.

[0003] It should be noted that the information disclosed in the above background section is only used to strengthen the understanding of the background of the present application, and therefore can include information that does not constitute prior art known to those of ordinary skill in the art. SUMMARY

[0004] The present application provides an interactive demonstration device with multi-module cooperative control, which integrates sound pickup, indication and multimedia control and intelligently links them, solves the problems of operation dispersion, noise interference and insufficient energy consumption management in the prior art, and can overcome the defects in the prior art to some extent.

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

[0006] According to a first aspect of the present application, a microphone device integrating laser indication and multimedia control is provided, and the device comprises: a handle; a sound pickup module arranged at the top end of the handle and used for collecting and outputting a sound signal of a speaker; A rotating mechanism is movably connected to the tail of the handle, wherein the rotating mechanism comprises: a ring-shaped sleeve, which is sleeved on the tail of the handle and is rotationally connected with the handle; a rotating lug, which is fixedly arranged on the outer side of the ring-shaped sleeve, wherein a connecting hole is formed in the rotating lug; a rotating base, which is arranged at the tail end of the laser indication module, wherein a rotating hole matched with the connecting hole is formed at the tail end of the rotating base; and a rotating shaft, which is clamped in the matched rotating hole and the connecting hole and rotationally cooperates with the rotating hole, wherein the rotating base rotates relative to the rotating lug around the rotating shaft; A multimedia control module is arranged in the shell of the handle and is located between the sound pickup module and the rotating mechanism, and is used to establish wireless or wired connection with the presentation device and send control instructions; A laser indication module is connected with the handle through the rotating mechanism and is used to emit an indication light beam; A cooperative control module is arranged in the inner cavity of the handle and is electrically connected with the sound pickup module, the laser indication module and the multimedia control module, and is used to adjust the noise threshold of the sound pickup module according to the position of the laser indication module and adjust the directivity parameter of the sound pickup module according to the page turning instruction sent by the multimedia control module, wherein the directivity parameter is used to determine the sound pickup angle of the sound pickup module.

[0007] In some example embodiments, the sound pickup module comprises: An audio sensor is used to collect the sound signal of the speaker, wherein the audio sensor is a single microphone sensor or a microphone array sensor.

[0008] In some example embodiments, the ring-shaped sleeve and the rotating lug are in an integrated structure.

[0009] In some example embodiments, the multimedia control module comprises: input keys, which are sequentially arranged from front to back as follows: a sound pickup module switch key, an up page turning key, a pause / play key, a down page turning key and a laser indication module switch key, wherein The sound pickup module switch key is electrically connected with the audio sensor and is used to control the sound pickup module to be turned on or off. The up page turning key is used to switch the current display content of the presentation device to the previous page. The pause / play key is used to pause / play the current display content of the presentation device. The down page turning key is used to switch the current display content of the presentation device to the next page. The laser indication module switch key is used to control the laser indication module to be turned on or off.

[0010] In some example embodiments, the multimedia control module comprises: The wireless communication unit is electrically connected with the input keys and is used for sending instructions corresponding to the input keys to the presentation device; wherein the wireless communication unit supports at least one of the following communication protocols: a Bluetooth low energy protocol, a 2.4GHz special radio frequency communication protocol and a classic Bluetooth communication protocol.

[0011] In some example embodiments, the cooperative control module further comprises: The position detection sensor is in communication connection with the microcontroller and is used for judging whether the laser indication module is in a storage position or a working position, wherein the position detection sensor comprises at least one of the following: a Hall sensor; a magnetic reed switch; a photoelectric limit switch; a mechanical limit switch.

[0012] In some example embodiments, the device further comprises: The common power supply module is arranged in the inner cavity of the handle and is used for supplying power to the sound pickup module, the laser indication module, the multimedia control module and the cooperative control module.

[0013] The embodiment of the present application provides a multi-module cooperative control interactive presentation device. The device comprises a sound pickup module, a laser indication module, a multimedia control module and a cooperative control module. The cooperative control module is electrically connected with each module and is used for intelligently adjusting according to the operation state of a presenter. When the presenter rotates the laser indication module, the cooperative control module controls the laser indication module to emit a light beam and simultaneously increases the noise threshold of the sound pickup module, so as to reduce the noise interference caused by the rotation operation; when the presenter presses a page turning key of the multimedia control module, the multimedia control module performs a page turning operation, and the cooperative control module detects the page turning operation and controls the sound pickup module to narrow the sound pickup angle, so as to further suppress the key noise; in a non-operation state, a low power consumption mode is entered to prolong the endurance time. The present application realizes the integration and intelligent linkage of sound pickup, indication and multimedia control, and solves the problems of dispersed operation, noise interference and insufficient energy consumption management in the prior art.

[0014] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present application. BRIEF DESCRIPTION OF DRAWINGS

[0015] The drawings incorporated into the specification and forming a part of the specification, show embodiments consistent with the present application, and together with the specification, serve to explain the principles of the present application. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0016] Figure 1 Fig. 1 is a schematic diagram of the overall structure of an interactive demonstration device according to an example embodiment of the present application; Figure 2 Fig. 2 is a schematic diagram of the module connection of an interactive demonstration device according to an example embodiment of the present application; Figure 3 Fig. 3 is a schematic diagram of the cooperative control logic of an interactive demonstration device according to an example embodiment of the present application.

[0017] Fig. 1 is a schematic diagram of the overall structure of an interactive demonstration device according to an example embodiment of the present application; Fig. 2 is a schematic diagram of the module connection of an interactive demonstration device according to an example embodiment of the present application; Fig. 3 is a schematic diagram of the cooperative control logic of an interactive demonstration device according to an example embodiment of the present application. DETAILED DESCRIPTION

[0018] In order to make the objects, technical solutions and advantages of the present application clearer, the following further describes the specific embodiments of the present application with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely used to explain the present application, but not to limit the present application. In addition, it should be noted that, for the purpose of description, only the parts related to the present application are shown in the drawings, but not all. In the description of the embodiments of the present application, unless otherwise explicitly specified and limited, the terms "connected", "connected", "fixed" should be understood in a broad sense, for example, can be fixedly connected, or can be detachably connected, or integrated; can be mechanically connected, or electrically connected; can be directly connected, or indirectly connected through an intermediate medium, or the internal connection of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances. In addition, the drawings are schematic diagrams of the present application.

[0019] In view of the shortcomings and deficiencies of the prior art, the present example embodiment provides an interactive demonstration device with multi-module cooperative control. Referring to Figure 1 Fig. 1, the device comprises: a handle 5; a pickup module 4 arranged at the top end of the handle 5, for collecting and outputting the sound signal of the speaker; The rotating mechanism 6 is movably connected to the tail of the handle 5. The rotating mechanism 6 comprises: a ring-shaped sleeve 1 sleeved on the tail of the handle 5 and rotationally connected with the handle 5; a rotating lug 11 fixedly arranged on the outer side of the ring-shaped sleeve 1; the ring-shaped sleeve 1 and the rotating lug 11 are in an integral structure, and the rotating lug 11 is provided with a connecting hole; a rotating base 12 arranged at the tail end of the laser indication module 2; the tail end of the rotating base 12 is provided with a rotating hole matched with the connecting hole; a rotating shaft 13 clamped in the matched rotating hole and the connecting hole and rotationally matched with the rotating hole; the rotating base 12 rotates relative to the rotating lug 11 around the rotating shaft 13. Specifically, the ring-shaped sleeve is arranged on the tail of the handle of the pickup module and can rotate 360° around the handle; the rotating lug is integrally formed with the ring-shaped sleeve; the tail of the laser indication module is rigidly connected with the rotating base, the rotating base is provided with a rotating hole, and the rotating base is connected with the rotating lug through the rotating shaft and can rotate 180° around the rotating shaft to switch to the storage position or the working position. The storage position of the laser indication module is in parallel with the pickup module, and the top of the laser indication module is in the same direction as the pickup module.

[0020] The multimedia control module 3 is arranged in the shell of the handle 5 and located between the pickup module 4 and the rotating mechanism 6, and is used for establishing wireless or wired connection with the demonstration device and sending control instructions. The multimedia control module 3 comprises: input keys, the input keys are sequentially arranged from front to back as: a pickup module switch key 35, an up page key 34, a pause / play key 33, a down page key 32 and a laser indication module switch key 31; the pickup module switch key 35 is electrically connected with the audio sensor and is used for controlling the pickup module 4 to be turned on or turned off; the up page key 34 is used for switching the current display content of the demonstration device to the previous page; the pause / play key 33 is used for pausing or playing the current display content of the demonstration device; the down page key 32 is used for switching the current display content of the demonstration device to the next page; and the laser indication module switch key 31 is used for controlling the laser indication module 2 to be turned on or turned off.

[0021] The laser indication module 2 is connected with the handle 5 through the rotating mechanism 6 and is used for emitting an indication light beam.

[0022] Exemplarily, the device further comprises: a common power supply module arranged in the inner cavity of the handle 5 and used for supplying power to the pickup module 4, the laser indication module 2, the multimedia control module 3 and the cooperative control module.

[0023] Exemplarily, the pickup module 4 comprises: an audio sensor used for collecting the sound signal of the speaker; the audio sensor is a single microphone sensor or a microphone array sensor.

[0024] For example, the multimedia control module further includes: a wireless communication unit electrically connected to the input keys, used to send the instructions corresponding to the input keys to the demonstration device; wherein the wireless communication unit supports at least one of the following communication protocols: Bluetooth Low Energy protocol, 2.4GHz dedicated radio frequency communication protocol, and classic Bluetooth communication protocol.

[0025] For example, the collaborative control module further includes: a position detection sensor, which is communicatively connected to the microcontroller, for determining whether the laser indicator module 2 is in the storage position or the working position, wherein the position detection sensor includes at least one of the following: a Hall sensor; a reed switch; a photoelectric limit switch; a mechanical limit switch.

[0026] For details, please refer to Figure 2 As shown, the collaborative control module also includes a microcontroller (MCU) and its peripheral noise threshold control circuit and angle control circuit, enabling the linkage between the sound pickup module and the laser indicator module, and between the sound pickup module and the multimedia control module. The MCU is a high-performance microcontroller (such as the STM32 series), equipped with multiple general-purpose input / output (GPIO) ports, an analog-to-digital converter (ADC), a digital-to-analog converter (DAC), and a communication interface. 2 C (integrated circuit interconnect), Universal Asynchronous Receiver / Transmitter (UART), etc., are used to process sensor signals, run control algorithms, and output control commands.

[0027] Furthermore, the logic behind the two linkages is as follows: (1) Laser indicator module position - sound pickup module noise threshold a. Laser pointing module position detection When the laser indicator module is in the retracted position, the magnet on the module corresponds to the position of the Hall sensor, and the sensor outputs a low level; when the laser indicator module is in the working position, the magnet position shifts, and the Hall sensor outputs a high level.

[0028] b. Noise threshold adjustment for the microphone module The MCU of the cooperative control module executes the following process: real-time reading of the level signal of the Hall sensor through the position detection interface GPIO. If a high level is detected (the laser indication module is in the working position): the MCU outputs a control signal to the gain control circuit of the pickup module through the DAC or Pulse Width Modulation (PWM) interface, adjusts the amplification multiple of the pickup circuit, and increases the noise threshold from the default 30dB to 50dB, reducing the interference of environmental noise on the pickup. If a low level is detected (the laser indication module is in the storage position), the MCU outputs a reverse control signal, and the pickup module restores the noise threshold to 30dB, returning to the normal pickup sensitivity.

[0029] (2) Multimedia control module page turning-pickup module pickup angle The page turning instruction of the multimedia control module is transmitted to the cooperative control module through the "key trigger + communication" mode, and the cooperative control module adjusts the pickup range of the pickup module accordingly.

[0030] a. Page turning instruction capture When the multimedia control module presses the page turning key, the key circuit outputs a trigger level to the key detection interface GPIO of the MCU, or sends a "page turning instruction frame" to the MCU through the I 2 C / UART.

[0031] b. Pickup angle adjustment The MCU of the cooperative control module executes the following process: capturing the page turning instruction through GPIO or communication interface. After receiving the instruction, the MCU outputs a control signal to the servo motor drive circuit of the pickup module through the PWM interface; the servo motor rotates according to the PWM duty cycle, and narrows the pickup angle of the pickup module from the default 120° (wide area pickup) to 60° (focus on the speaker direction, avoid key sound interference with pickup). After the page turning operation is completed (such as the key is released, the instruction frame is stopped), the MCU outputs a "angle recovery" PWM signal, and the servo motor drives the pickup module to rotate back to the 120° wide area pickup state.

[0032] Further, when the presenter holds the handle, the multi-module collaborative control interactive presentation device is in a standby state by default: the sound pickup module is turned on, the laser indication module is dormant, and the multimedia control module is triggered. When the PPT content needs to be indicated, the presenter rotates the laser indication module to trigger the position detection sensor to output a high level, and the collaborative control module immediately activates the laser indication module to emit a light beam; at the same time, the sound pickup module is sent an instruction to increase the noise threshold. At this time, the presenter can indicate the PPT page through the laser beam, and the sound pickup module only amplifies the voice signal and ignores the slight operation sound of the laser key. When the PPT page needs to be switched, the presenter presses the page up key or the page down key of the multimedia control module, and the collaborative control module synchronously enhances the directivity of the sound pickup module, for example, the sound pickup angle is narrowed from 120° to 60°, further reducing the noise interference caused by the key operation. The sound pickup angle switching operation can be realized by digital beamforming or physical acoustic orientation.

[0033] Specifically, at the end of the presentation, the page down key is pressed for 3 seconds, and the collaborative control module triggers a termination instruction: the multimedia control module exits the play; the sound pickup module stops audio output; the laser indication module turns off the light beam; the device remains in standby power supply, waiting for the next activation. If the presenter rotates the laser indication module to the storage position, the collaborative control module receives the storage state signal and controls the laser indication module to sleep; if there is no operation within 5 minutes, the device automatically enters a low-power mode to prolong the battery life.

[0034] The above technical scheme is adopted in the present application, and compared with the prior art, the present application has the following technical effects: (1) Suppress operation noise When the laser indication module or the multimedia control module is activated, the collaborative control module can synchronously adjust the noise threshold or the sound pickup directivity of the sound pickup module, effectively reducing the mechanical noise caused by the key or rotation operation to interfere with the voice signal, and ensuring the clear transmission of the voice signal.

[0035] (2) Improve operation continuity By integrating the laser indication function, multimedia page turning function and sound pickup function in the same device and intelligently scheduling them by the collaborative control module, the presenter can avoid frequently switching between multiple devices during the presentation, improving the smoothness and convenience of the operation.

[0036] (3) Optimize energy consumption management The collaborative control module can dynamically adjust the working mode of each module according to the use state, for example, automatically entering standby or low-power mode when not in operation, thereby reducing the overall energy consumption and prolonging the battery life of the device.

[0037] (4) Structure and function collaborative optimization The accommodation and unfolding of the laser indication module are realized through the rotating mechanism, which not only improves the integration degree and operation experience of the device, but also realizes the "no conflict, high efficiency" speech auxiliary effect through the intelligent adjustment of the cooperative control module.

[0038] Further, the application provides an interactive demonstration device with multi-module cooperative control. Figure 3 The cooperative control logic of the interactive demonstration device with multi-module cooperative control includes: when the device is in the power-on state, first, hardware self-checking is performed. If there is a fault, fault alarm is performed: indicating red light flashing, and buzzer prompt (distinguishing module fault type). If all are normal, parameter initialization is performed: pickup sensitivity 30dB / pickup angle 120° / laser indication module hibernation / multimedia control module waiting for triggering. Entering standby state: only the pickup module works, and other modules are in low-power standby. It is judged whether there is any operation within 5 minutes. If there is no operation, and the laser indication module is in the accommodation position, the cooperative control module starts the low-power mode, the pickup module reduces the sampling rate, and the laser indication / multimedia control module: only the wake-up detection is reserved. If there is operation, and the laser indication module is turned out of the accommodation position, the cooperative control module receives the rotation-to-position signal, the laser indication module emits a light beam, and the pickup module is synchronously adjusted: the noise threshold is increased from 30dB to 50dB. It is further judged whether the laser indication module is turned back to the accommodation position. If it has been turned back, the laser indication module closes the light beam and enters the low-power state, and the pickup module restores the initial parameters.

[0039] If there is operation, and the multimedia control module key is pressed, it is judged whether the page down key is pressed for more than 3 seconds. If it is not pressed for more than 3 seconds, the key type is identified and the corresponding PPT instruction is implemented, the cooperative control module sends an angle adjustment instruction, and the pickup module temporarily narrows the angle to 60° to reduce the collection of key sound. It is further judged whether the key operation is ended. If it has been ended, the pickup module restores the 120° angle, and enters the standby state: only the pickup module works, and other modules are in low-power standby. If it has not been ended, the key type is identified and the corresponding PPT instruction is implemented.

[0040] If the page down key is pressed for more than 3 seconds, a termination instruction is triggered, the cooperative control module synchronously sends the termination instruction to the three modules: the multimedia control module disconnects the data transmission with the terminal device, and the key is locked; the laser indication module forcibly closes the light beam (regardless of whether it is in the accommodation position); the pickup module cuts off the audio output. Entering termination standby. It is judged whether the wake-up operation is triggered. If it is triggered (short press of the play key), the lock is released, and the initial standby state is restored.

[0041] Other embodiments of the invention will readily conceive of by those skilled in the art upon consideration of the specification and practice of the invention described above. This application is intended to cover any variations, uses, or adaptations of the invention that follow the general principles of the invention and include common knowledge or customary techniques in the art not disclosed herein. The specification and embodiments are to be considered exemplary only, and the true scope and spirit of the invention are indicated by the claims.

[0042] It should be understood that the present invention is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of the invention is limited only by the appended claims.

Claims

1. An interactive demonstration device with multi-module collaborative control, characterized in that, The device includes: Handle (5); The pickup module (4) is located at the top of the handle (5) and is used to collect and output the speaker's voice signal; A rotating mechanism (6) is movably connected to the tail of the handle (5); wherein the rotating mechanism (6) includes: an annular sleeve (1) sleeved on the tail of the handle (5) and rotatably connected to the handle (5); a rotating lug (11) fixedly disposed on the outer side of the annular sleeve (1); wherein a connecting hole is provided on the rotating lug (11); a rotating base (12) disposed at the tail end of the laser indicator module (2); wherein a rotating hole matching the connecting hole is provided at the tail end of the rotating base (12); a rotating shaft (13) is engaged in the matching rotating hole and the connecting hole and rotatably cooperates with the rotating hole; wherein the rotating base (12) rotates relative to the rotating lug (11) around the rotating shaft (13); The multimedia control module (3) is located in the housing of the handle (5) and between the microphone module (4) and the rotating mechanism (6). It is used to establish a wireless or wired connection with the demonstration device and send control commands. The laser pointing module (2) is connected to the handle (5) via a rotating mechanism (6) and is used to emit a pointing beam; The collaborative control module is located in the inner cavity of the handle (5) and is electrically connected to the pickup module (4), the laser pointer module (2) and the multimedia control module (3). It is used to adjust the noise threshold of the pickup module (4) according to the position of the laser pointer module (2); and to adjust the directional parameters of the pickup module (4) according to the page turning command issued by the multimedia control module (3). The directional parameters are used to determine the pickup angle of the pickup module (4).

2. The apparatus according to claim 1, characterized in that, The pickup module (4) includes: An audio sensor is used to collect the speaker's voice signal; the audio sensor can be a single microphone sensor or a microphone array sensor.

3. The apparatus according to claim 1, characterized in that, The annular sleeve (1) and the rotating lug (11) are an integral structure.

4. The apparatus according to claim 2, characterized in that, The multimedia control module (3) includes: input buttons, which, from front to back, are: a microphone module switch button (35), a page up button (34), a pause / play button (33), a page down button (32), and a laser indicator module switch button (31); wherein, The microphone module switch button (35) is electrically connected to the audio sensor and is used to control the microphone module (4) to turn on or off. The page up button (34) is used to switch the currently displayed content of the demonstration device to the previous page; The pause / play button (33) is used to pause / play the currently displayed content of the demonstration device; The page down button (32) is used to switch the currently displayed content of the demonstration device to the next page; The laser indicator module switch button (31) is used to control the laser indicator module (2) to be turned on or off.

5. The apparatus according to claim 4, characterized in that, The multimedia control module includes: The wireless communication unit is electrically connected to the input keys and is used to send the commands corresponding to the input keys to the demonstration device; wherein, the wireless communication unit supports at least one of the following communication protocols: Bluetooth Low Energy protocol, 2.4GHz dedicated radio frequency communication protocol, and classic Bluetooth communication protocol.

6. The apparatus according to claim 1, characterized in that, The collaborative control module further includes: A position detection sensor, which is connected in communication with the microcontroller, is used to determine whether the laser pointing module (2) is in the storage position or the working position, wherein the position detection sensor includes at least one of the following: Hall effect sensor; Reed switch; Photoelectric limit switch; Mechanical limit switch.

7. The apparatus according to claim 1, characterized in that, The device further includes: A common power supply module is located inside the handle (5) and is used to power the pickup module (4), laser pointer module (2), multimedia control module (3) and collaborative control module.

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