A smart central control screen

Abstract

The present invention belongs to the technical field of central control large screens, and is particularly an intelligent central control large screen, including a power supply module, a voice collection module, a signal processing unit, an adaptive filter, a voice recognition module, a central processing module and a network module. The present invention determines the incident angle of the sound signal collected in the voice collection module through the signal processing unit, and performs signal component statistics according to the incident angle, and then determines the parameters of the ratio of the noise component in the statistical result and sends them to the adaptive filter for adjustment, which helps the adaptive filter to accurately filter out noise other than voice commands, and then the voice recognition module converts the voice command recognition of the noise reduction process into a control instruction, and sends it to the central control module. The central control module controls the corresponding intelligent device according to the voice control instruction, so that the central control large screen is more accurate and fast when controlling the connected intelligent device through voice, and therefore, it can meet the needs of users.

Description

Technical Field

[0001] The present invention relates to the technical field of central control large screens, and in particular to an intelligent central control large screen. Background Art

[0002] Smart home is based on the house as a platform, using integrated wiring technology, network communication technology, security technology, automatic control technology, audio and video technology to integrate facilities related to home life, build an efficient management system for residential facilities and family schedule affairs, improve home safety, convenience, comfort, artistry, and achieve an environmentally friendly and energy-saving living environment. Compared with ordinary homes, smart homes not only have traditional residential functions, but also have construction, network communication, information appliances, equipment automation, provide a full range of information interaction functions, and even save money on various energy costs. During the installation process of smart homes, a smart interactive central control screen will be configured as a central control component to complete the coordinated control and operation of multiple homes in the entire smart home system.

[0003] During the use of the existing home central control screen, the smart devices connected to the central control screen are basically controlled by voice. However, since the central control screen also includes voice information other than voice commands when receiving voice, it is difficult for the central control screen to recognize the control instructions collected by voice, which also prolongs the time consumed by the central control screen to obtain voice control instructions, making the experience of using the central control screen poor, and therefore it is difficult to meet the needs of users. To this end, the present invention proposes a smart central control screen. Summary of the invention

[0004] 1. Technical issues to be solved

[0005] In view of the deficiencies in the prior art, the present invention provides an intelligent central control large screen, which solves the problem that the existing central control large screen is difficult to perform noise reduction processing on voice information other than voice commands when obtaining voice control instructions.

[0006] (II) Technical solution

[0007] In order to achieve the above-mentioned purpose, the present invention specifically adopts the following technical solutions:

[0008] An intelligent central control large screen includes a power supply module, a voice acquisition module, a signal processing unit, an adaptive filter, a voice recognition module, a central processing module and a network module; wherein:

[0009] The power supply module is connected to the central processing module, and the central processing module can be connected to the power supply control relay of the household appliance through the power supply module, and can be used to control the power supply of the household appliance and all smart devices connected to the central control large screen;

[0010] The voice collection module is connected to the signal processing unit, and the voice collection module is used to collect the sound outside the central control large screen in real time and send the collected sound signal to the signal processing unit;

[0011] The signal processing unit is connected to the adaptive filter, and is used to determine the incident angle of the sound signal collected in the voice collection module, and perform signal component statistics according to the incident angle, and then determine the parameter of the ratio of the noise component in the statistical result and send it to the adaptive filter for adjustment;

[0012] The speech recognition module is connected to the adaptive filter and the central control module respectively. The speech recognition module converts the sound signal recognition processed by the adaptive filter into a control instruction and sends it to the central processing module. The central processing module controls the smart device connected to the central control screen according to the control instruction sent by the speech recognition module.

[0013] The central processing module is connected to the network module, and the central processing module can exchange data with external mobile terminals and property terminals respectively through the network module.

[0014] Furthermore, the signal processing unit includes:

[0015] The DFT module is used to directly perform discrete Fourier transform on the sound signal collected by the voice collection module into the frequency domain;

[0016] The delay module is used to calculate the phase difference of each frequency sub-band of the voice collection module signal, and calculate the relative delay of each frequency sub-band of the voice collection module signal from the phase difference;

[0017] A judgment module is used to calculate the incident angle of the voice acquisition module signal according to the relative delay of each frequency sub-band;

[0018] The statistical module is used to perform statistics on the target signal components according to the incident angle, distinguish the target signal components and the noise components, and determine the parameters according to the ratio of the noise components in the statistical results, and send the parameters to the adaptive filter for adjustment.

[0019] Further, the DFT module includes:

[0020] Framing module, used for framing sound signals;

[0021] A windowing module is used to perform windowing on each frame of the signal after the frame processing;

[0022] The DFT conversion module is used to perform DFT conversion on the windowed data to the frequency domain.

[0023] Furthermore, the delay module includes:

[0024] A first recording module, used to record a first time point in a voice signal;

[0025] A second recording module, used to record a second time point in the voice signal;

[0026] The difference calculation module is used to calculate the phase difference between the first time point of the speech signal and the second time point of the speech signal to obtain the relative delay of each frequency sub-band in the sound signal.

[0027] Furthermore, the central control screen also includes a display module and a speaker, the display module is a touch liquid crystal display screen, and the speaker is used to play the corresponding audio information in the central control screen.

[0028] Furthermore, the voice collection module is a microphone array, wherein the microphone array includes an omnidirectional microphone and a unidirectional microphone.

[0029] (III) Beneficial effects

[0030] Compared with the prior art, the present invention provides a smart central control large screen, which has the following beneficial effects:

[0031] The present invention determines the incident angle of the sound signal collected in the voice collection module through the signal processing unit, and performs signal component statistics according to the incident angle, and then determines the parameters of the ratio of the noise component in the statistical result and sends them to the adaptive filter for adjustment, which helps the adaptive filter to accurately filter out noise other than voice commands. Then the voice recognition module converts the voice command recognition processed by noise reduction into a control instruction and sends it to the central control module. The central control module controls the corresponding smart device according to the voice control instruction, so that the central control large screen can control the connected smart device through voice more accurately and quickly, and therefore can meet the needs of users. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 This is a block diagram of the module connections in the intelligent central control large screen in an embodiment of the present invention. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] Example

[0035] like Figure 1As shown, an intelligent central control large screen proposed in one embodiment of the present invention includes a power supply module, a voice acquisition module, a signal processing unit, an adaptive filter, a voice recognition module, a central processing module and a network module; wherein:

[0036] The power supply module is connected to the central processing module, and the central processing module can be connected to the power supply control relay of the household appliances through the power supply module, and can be used to control the power supply of the household appliances and all smart devices connected to the central control screen;

[0037] The voice collection module is connected to the signal processing unit. The voice collection module is used to collect the sound outside the central control screen in real time and send the collected sound signal to the signal processing unit;

[0038] The signal processing unit is connected to the adaptive filter, and is used to determine the incident angle of the sound signal collected in the voice collection module, and perform signal component statistics according to the incident angle, and then determine the parameters of the ratio of the noise component in the statistical result and send them to the adaptive filter for adjustment;

[0039] The voice recognition module is connected to the adaptive filter and the central control module respectively. The voice recognition module converts the sound signal processed by the adaptive filter into a control command and sends it to the central processing module. The central processing module controls the smart devices connected to the central control screen according to the control command sent by the voice recognition module.

[0040] The central processing module is connected to the network module, and the central processing module can exchange data with external mobile terminals and property terminals respectively through the network module.

[0041] In some embodiments, the signal processing unit includes:

[0042] The DFT module is used to directly perform discrete Fourier transform on the sound signal collected by the voice collection module into the frequency domain;

[0043] The delay module is used to calculate the phase difference of each frequency sub-band of the voice collection module signal, and calculate the relative delay of each frequency sub-band of the voice collection module signal from the phase difference;

[0044] A judgment module is used to calculate the incident angle of the voice acquisition module signal according to the relative delay of each frequency sub-band;

[0045] The statistical module is used to perform statistics on the target signal components according to the incident angle, distinguish the target signal components and the noise components, and determine the parameters according to the ratio of the noise components in the statistical results, and send the parameters to the adaptive filter for adjustment.

[0046] In some embodiments, the DFT module includes:

[0047] Framing module, used for framing sound signals;

[0048] A windowing module is used to perform windowing on each frame of the signal after the frame processing;

[0049] The DFT conversion module is used to perform DFT conversion on the windowed data to the frequency domain.

[0050] In some embodiments, the delay module includes:

[0051] A first recording module, used to record a first time point in a voice signal;

[0052] A second recording module, used to record a second time point in the voice signal;

[0053] The difference calculation module is used to calculate the phase difference between the first time point of the speech signal and the second time point of the speech signal to obtain the relative delay of each frequency sub-band in the sound signal.

[0054] In some embodiments, the central control screen also includes a display module and a speaker. The display module is a touch LCD display screen, and the speaker is used to play the corresponding audio information in the central control screen.

[0055] In some embodiments, the voice collection module is a microphone array, wherein the microphone array includes an omnidirectional microphone and a unidirectional microphone.

[0056] A smart central control large screen in the embodiment of the present invention can enable the central processing module to remotely connect with home smart devices, external mobile terminals and property terminals through the connection between the central processing module and the network module, wherein the external mobile terminal is a mobile phone or a tablet computer, and the property terminal is an access control management platform and an elevator control system authorized by the central control large screen. It should be noted that home smart devices, external mobile terminals and property terminals are all smart devices that support protocols related to the Zigbee wireless communication module. In this way, the central control large screen can not only control the smart devices of home appliances, but also control the access control, elevator calling and monitoring of the community separately, thereby improving the multi-functional management of the central control large screen and providing residents with a safe, comfortable and convenient modern and intelligent living environment.

[0057] When the central control screen controls the connected smart device through voice, the sound outside the central control screen is first collected through the voice collection module, and then the voice collection module sends the collected sound signal to the signal processing module. The DFT module in the signal processing module directly performs discrete Fourier transform to the frequency domain according to the collected sound signal, and inputs the signal converted to the frequency domain into the delay module to calculate the phase difference of each frequency sub-band of the voice signal, and then calculates the relative delay of each frequency sub-band of the signal according to the phase difference and inputs it into the judgment module. The judgment module calculates the incident angle of the voice collection module signal according to the relative delay of each frequency sub-band and sends it to the statistical module. Block, the statistical module performs statistics on the target signal components according to the incident angle, distinguishes the target signal components and the noise components, and determines the parameters according to the ratio of the noise components in the statistical results, and sends the parameters to the adaptive filter for adjustment, which helps the adaptive filter to accurately filter out noise other than voice commands. Then the voice recognition module converts the voice command recognition processed by noise reduction into control instructions, and sends them to the central control module. The central control module controls the corresponding smart device according to the voice control instructions, so that the central control screen can control the connected smart devices through voice more accurately and quickly, thereby meeting the needs of users.

[0058] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A smart central control large screen, characterized by: It includes a power supply module, a voice acquisition module, a signal processing unit, an adaptive filter, a voice recognition module, a central processing module and a network module; wherein: The power supply module is connected to the central processing module, and the central processing module can be connected to the power supply control relay of the household appliance through the power supply module, and can be used to control the power supply of the household appliance and all smart devices connected to the central control screen; The voice acquisition module is connected to the signal processing unit, and the voice acquisition module is used to collect the sound outside the central control screen in real time and send the collected sound signal to the signal processing unit; The signal processing unit is connected to the adaptive filter, and the signal processing unit is used to determine the incident angle of the sound signal collected in the voice collection module, and perform signal component statistics according to the incident angle, and then determine the parameter of the ratio of the noise component in the statistical result and send it to the adaptive filter for adjustment; The speech recognition module is connected to the adaptive filter and the central control module respectively. The speech recognition module converts the sound signal recognition processed by the adaptive filter into a control instruction and sends it to the central processing module. The central processing module controls the smart device connected to the central control screen according to the control instruction sent by the speech recognition module. The central processing module is connected to the network module, and the central processing module can exchange data with the external mobile terminal and the property terminal respectively through the network module; The signal processing unit comprises: The DFT module is used to directly perform discrete Fourier transform on the sound signal collected by the voice collection module into the frequency domain; The delay module is used to calculate the phase difference of each frequency sub-band of the voice acquisition module signal, and calculate the relative delay of each frequency sub-band of the voice acquisition module signal from the phase difference; A judgment module is used to calculate the incident angle of the voice acquisition module signal according to the relative delay of each frequency sub-band; A statistical module is used to perform statistics on target signal components according to the incident angle, distinguish target signal components and noise components, and determine parameters according to the ratio of noise components in the statistical results, and send the parameters to the adaptive filter for adjustment; The DFT module comprises: Framing module, used for framing sound signals; A windowing module is used to perform windowing on each frame of the signal after the frame processing; The DFT conversion module is used to perform DFT conversion on the windowed data to the frequency domain.

2. The intelligent central control large screen according to claim 1, characterized in that: The delay module comprises: A first recording module for recording a first time point in a voice signal; A second recording module, used to record a second time point in the voice signal; The difference calculation module is used to calculate the phase difference between the first time point of the speech signal and the second time point of the speech signal to obtain the relative delay of each frequency sub-band in the sound signal.

3. The intelligent central control large screen according to claim 1, characterized in that: The central control screen also includes a display module and a speaker. The display module is a touch liquid crystal display screen, and the speaker is used to play the corresponding audio information in the central control screen.

4. The intelligent central control large screen according to claim 1, characterized in that: The voice collection module is a microphone array, wherein the microphone array includes an omnidirectional microphone and a unidirectional microphone.

Images