CN102865920B - Method and device for monitoring surrounding environmental noise outside television - Google Patents

Abstract

The present invention relates to the technical field of television sets, and in particular to a method and device for monitoring the external ambient noise of the television set, which is characterized in that it comprises the following steps: step 1, monitoring the external noise signal of the television set; step 2, judging the external noise signal Whether the noise signal is greater than the preset noise upper limit reference value, if yes, go to step 3; if not, go back to step 1; step 3, prompt an alarm. The present invention utilizes the state that the sub-controller is ready to receive instructions, connects a noise collection module and an alarm prompt module to the sub-controller, and utilizes the idle I/O interface of the sub-controller to realize the monitoring of external noise when the TV is in standby. Monitoring and reminding does not require the user to purchase a separate noise reminder device, which saves the cost of the enterprise and occupies a favorable position for the enterprise in the market competition.

Description

Method and device for monitoring ambient noise outside TV set

technical field

The invention relates to the technical field of televisions, in particular to a method and a device for monitoring ambient noise outside the television.

Background technique

With the improvement of living standards and the continuous development of video technology, various video devices emerge in an endless stream, and their functions are also increasing. At the same time, users have higher and higher requirements for video devices. Taking TV as an example, the initial users only required clear TV to watch TV. However, with the continuous development of TV technology, the function of TV is becoming more and more powerful. files, and some TVs also have a video recording function. With the continuous improvement of the functions of TV sets, the ensuing competition is also becoming more and more fierce. Under such circumstances, various manufacturers are trying to seize market share through price competition. However, the price of TVs has reached an unprecedented low price. However, when most mainstream manufacturers focus on price When it comes to the subject, the market competition falls into an embarrassing situation of "homogenization". In order to quickly occupy the market, vicious price wars began to appear and there is a trend of continuous escalation, and even began to endanger the healthy and orderly development of flat-panel TVs. the

The key to breaking through such a difficult situation lies in who can bring innovative value experience to users, such as the previous remote control, picture-in-picture and other functions, so that users can feel fresher benefits, so as to directly influence and drink Users' desire to buy can get rid of the bleeding competition in the "Red Sea". Many manufacturers also looked forward to this point, and began to turn their attention to the innovation of new functions, such as multi-function address book tools, memo tools, alarm clock tools, etc., as new functions that can be implemented on TVs, they can also become TV highlights.

In daily life, noise pollution can be seen everywhere. Noise pollution is a kind of environmental pollution and has become a great harm to human beings. Noise pollution, water pollution, air pollution, and solid waste pollution are regarded as four major environmental problems worldwide. For the monitoring scientific and technological personnel of noise pollution, the noise monitor has been invented, but because it has disadvantages such as high cost and inconvenient use, it is seldom popularized in household use.

If this function is added on the TV set popularized in the family, it will have great significance to the promotion of the competitiveness of the enterprise in the market. In the prior art, there is a TV capable of monitoring external noise. This TV uses the function of the TV to supply power to peripheral devices, and is equipped with an external noise monitoring device to monitor external noise. This kind of TV has the following disadvantages: this kind of TV can only provide working voltage for the noise monitoring device when it is turned on, and if there is a program on the TV at this time, it must have a sound output, so the sound output by the TV itself will be taken as noise. Monitoring, can not distinguish the real noise, lost the meaning of noise monitoring.

Contents of the invention

The purpose of the present invention is to overcome the deficiencies of the above-mentioned technologies, and provide a method and device for monitoring the noise of the surrounding environment outside the TV, so that the TV can monitor the external noise in real time without turning on the TV, and monitor all noises. The monitored noise situation will give an alarm prompt.

In order to achieve the above object, the present invention adopts the following technical solutions: a method for monitoring the external ambient noise of the television set, comprising the following steps: step 1, monitoring the external noise signal of the television set; step 2, judging whether the external noise signal is greater than Preset the noise upper limit reference value, if yes, go to step 3; if not, go back to step 1; step 3, prompt an alarm.

In said step 2, three prompt alarm signal range values are also preset, which are respectively the first range value, the second range value and the third range value; when the difference between the noise signal and the noise signal upper limit reference value is within the first When the value is within the range, step 3 performs the first prompt method; when the difference between the noise signal and the noise signal upper limit reference value is within the second range value, step 3 performs the second prompt method; when the noise signal and the noise signal upper limit When the difference between the reference values is within the third range, Step 3 performs the third prompting method.

The first prompt method is that the LED light on the front control panel flickers; the second prompt method is that the buzzer sounds; the third prompt method is that the screen lights up and displays subtitles.

The noise signal upper limit reference value and the prompt alarm signal range value are set manually by the user, or are set when the TV set leaves the factory.

A device for detecting ambient noise outside a television set, comprising:

The noise acquisition module is used to detect the intensity of the external noise of the TV set, and transmits the detected external noise signal value to the sub-controller of the TV set; the sub-controller of the TV set is used to receive the external noise signal value, And judge whether the external noise signal value is greater than the preset noise signal upper limit reference value, if so, send a prompt alarm signal to the prompt alarm module, if not, then control the noise collection module to continue to detect the intensity of the external noise of the TV set; prompt The alarm module is used to receive the prompt alarm signal sent by the sub-controller, and perform a prompt alarm; the power module is used to provide working voltage for the sub-controller, the noise collection module and the prompt alarm module.

The noise collection module includes: a microphone for receiving an external noise signal; an amplifying circuit for amplifying the amplitude of the external noise electric signal; a rectification filter circuit for removing a waveform with large fluctuations in the noise electric signal; and, rectifying and filtering An A/D conversion circuit that converts the noise electrical signal into a digital signal.

The power supply module is a power supply board of the TV, which provides working voltages to the sub-controller, the noise collection module and the prompt and alarm module respectively.

The working voltage provided by the power board to the noise collection module is the standby voltage of the TV, and the power board provides working voltage to the sub-controller and the warning module through a DC/DC conversion circuit.

The prompt alarm module includes: LED lights, used to receive the alarm signal sent by the sub-controller, and perform flashing alarm; buzzer, used to receive the alarm signal sent by the sub-controller, and perform sound alarm; TV screen, It is used to receive the alarm signal sent by the secondary controller, and light up to prompt the alarm.

The beneficial effects of the present invention are: the present invention utilizes the noise acquisition module to collect external noise, and in the sub-controller, makes a difference between the collected external noise signal and the preset upper limit reference value of the noise signal, if the upper limit reference value of the noise signal is exceeded, The user is then prompted to give an alarm. In the present invention, when the TV is on standby, the indicator light is always on, and the sub-controller is always in the working state, but it is only ready to receive instructions. By externally connecting the noise collection module and the alarm prompt module on the sub-controller, the idle I/O of the sub-controller is used. The O interface is used to monitor and remind the external noise of the TV when it is in standby mode, which expands the functions of the TV and does not require the user to purchase a noise reminder device separately, which saves the cost of the enterprise and helps the enterprise occupy a market share in the competition. favorable position. At the same time, since the television program is always in standby, the television program does not produce sound, so there is no impact on the noise collection module, which improves the accuracy of noise monitoring.

Description of drawings

Fig. 1 is the flow chart of working method of the present invention;

Fig. 2 is a working principle diagram of the present invention.

Detailed ways

The specific implementation manner of the present invention will be described in detail below in conjunction with the accompanying drawings and preferred embodiments. As shown in Figure 1, in the present invention, the control chip responsible for the work of the TV is mainly the main controller and the sub-controller, and the infrared remote control signal and the button signal are input to the main controller and the sub-controller at the same time, wherein the sub-controller only It is responsible for responding to the remote control key commands of power on/standby (according to the habit, in standby), controlling the on/off of the relay of the whole machine, and receiving the notification of timing shutdown information, while the main controller is responsible for receiving and processing all other remote control functions. Confirm the standby command.

The power board outputs 5V voltage to supply power to the noise acquisition module, which is converted into 3.3V power supply to the sub-controller through DC/DC. (The 5V voltage is the standby voltage of the TV, as long as the TV is powered on and has this voltage), using this voltage for power supply, the noise collection module is always working, until the S_stop (stop) signal sent by the secondary controller is received, the collection will stop sound work. When the TV is working normally, the secondary controller receives the Power_Det (power on) signal sent by the main controller. At this time, the TV will have sound, and the secondary controller sends an effective S_stop (stop) signal to the noise collection module. The noise collection module Also stop collecting sounds. The present invention only needs to add a noise collecting circuit, and does not require the user to separately purchase a noise reminding device, which expands the functions of the television and saves the cost of the enterprise.

Embodiment 1, the present invention comprises the following steps: the first step, monitors the external noise signal of television, mainly utilizes the noise collection module, at this moment television is in the state of shutting down, and only sub-controller works, and sub-controller is in the position of receiving signal state; the second step is to judge whether the external noise signal is greater than the preset noise upper limit reference value, and if so, enter the third step; if not, return to the first step; the third step is to give a prompt and alarm.

Embodiment 2, as a further improvement of the present invention, the first step monitors the external noise signal of the TV set; the second step presets the upper limit reference value of the noise signal and the range value of the prompt alarm signal, and the upper limit reference value of the noise signal and the range value of the prompt alarm signal are It is set manually by the user, or it is set when the TV leaves the factory; the third step is to make a difference between the collected noise signal value and the upper limit reference value of the noise signal, and determine whether the difference is within the range of the prompt alarm signal. If it is within the value of the prompt alarm signal range, the alarm prompt module will be used to prompt an alarm; otherwise, the noise collection module will continue to continue signal collection. For example, in real life, 20-40dB is the sound of soft talking; 40-60dB is the sound of indoor talking; 60-70dB is the sound of loud talking; above 70dB can be judged as noise, which will cause hearing loss to the human body. harm. During the initial setting, you can set the warning range value as: 20dB-30dB, and set the upper limit reference value of the noise signal as: 40dB, which is equivalent to the voice of speaking. If the external noise signal collected by the noise collection module is 60dB, 60dB-40dB=20dB, this value is within the range of the prompt alarm range value, and the alarm prompt module will give a prompt alarm. The prompting alarm can be a TV screen lighting up or a TV buzzer sounding.

Embodiment 3, as a further improvement of the present invention, the prompt alarm can be divided into several situations according to different situations. Through the setting of these several situations, the user can know what level the noise is in, so the range of the prompt alarm signal can be The values are divided into: the first range value, the second range value and the third range value. For example, the first range value can be set as: greater than 0 dB and less than or equal to 10 dB, and the second range value can be set as: greater than 10 dB and less than Equal to 30dB, the third range value is set to be greater than 30Db. The three range values correspond to the three noise situations. Situation 1. When the difference between the noise signal value and the noise signal upper limit reference value is greater than 0 dB and less than or equal to 10 dB, the alarm prompt module prompts the first prompt mode, that is, the front control The LED light on the panel flickers; case 2, when the difference between the noise signal value and the noise signal upper limit reference value is greater than 10 dB and less than or equal to 30 dB, the alarm prompt module prompts the second prompt method, that is, the buzzer sounds; case 3, When the difference between the noise signal value and the noise signal upper limit reference value is greater than 30dB, the alarm prompt module prompts a third prompt mode, that is, the screen lights up and displays "keep quiet". For example, if the external noise signal value collected by the noise collection module is 30dB, the noise signal upper limit reference value is set to 40dB, 30Db<40dB, without any alarm, the noise collection module continues to monitor; if the external noise signal collected by the noise collection module is 50dB, the noise signal upper limit reference value is set to 40dB, 50dB-40dB=10dB, this difference is within the first range value, it is noise situation 1, the LED light on the front control panel flickers; if the external noise signal collected by the noise collection module The value is 60dB, the noise signal upper limit reference value is set to 40dB, 60dB-40dB=20dB, this difference is within the second range value, it is the noise situation 2, and the buzzer will sound an alarm; if the external noise collected by the noise collection module The signal value is 80dB, the noise signal upper limit reference value is set to 40dB, 80dB-40dB=40dB, this difference is within the third range value, it is noise situation 3, the screen lights up and displays "keep quiet". The noise acquisition module has been in the state of acquisition and comparison, and the sub-controller has been sending signals to the prompt alarm module for prompt alarm. Only when the noise signal value collected by the noise Send the S_stop (stop) signal, at this time the screen is turned off, the buzzer stops working, the alarm is automatically released, and the LED indicator returns to the standby state.

As shown in Figure 2, it is a working principle diagram of the present invention. The power supply of the noise collection module is provided by the output voltage 5V of the power supply module, which is connected with the sub-controller of the TV. The noise collection module module includes a microphone, an amplifier circuit, and a rectification filter circuit. After the filter circuit, the analog sound signal with a better waveform is converted into a digital signal by analog-to-digital (A/D) conversion. The front control panel is connected to the sub-controller, and the power supply is 3.3V converted from 5V output by the power module through DC/DC. The LED light is located on the front control panel, and the sub-controller outputs the LED_WAKE signal (light flashing start signal) to control the front control panel LED light blinks. The buzzer is connected to the sub-controller, and the power supply is 5V output from the power board. The sub-controller controls the buzzer switch through the BF_WAKE signal (buzzer start signal). The secondary controller is also connected with the main controller and the sound chip module respectively. The main controller is used for receiving control signals input by the user, and outputting at least one control signal for executing prescribed actions. When the data processed by the noise acquisition module is input into the sub-controller, the comparison circuit in the sub-controller judges the corresponding comparison value and outputs the corresponding control signal. In case 1, the S_stop signal is invalid; in case 2, the LED_WAKE signal is valid ; In case 3, the BF_WAKE signal is valid; in case 4, the output signal starts the main chip, the backlight of the TV Panel is turned on, the screen lights up, and the pre-stored picture file is called, and the words "please keep quiet" are prompted. The judgment circuit is equivalent to a switch of the control signal. If the TV is working normally, the Power_Det signal is valid, the S_stop signal output by the secondary controller is valid, and the noise collection module stops working. Because the sub-controller of the TV is always working, this solution uses the unused DATA/I/O interface of the sub-controller, and does not add other integrated control chips, so the processing is relatively simple.

The invention uses the noise acquisition module to collect external noise, and in the sub-controller, the collected external noise signal is compared with the preset upper limit reference value of the noise signal, and if the upper limit reference value of the noise signal exceeds the upper limit reference value, a prompt and alarm is given to the user. In the present invention, when the TV is on standby, the indicator light is always on, and the sub-controller is always in the working state, but it is only ready to receive instructions. By externally connecting the noise collection module and the alarm prompt module on the sub-controller, the idle I/O of the sub-controller is used. The O interface is used to monitor and remind the external noise of the TV when it is in standby mode, which expands the functions of the TV and does not require the user to purchase a noise reminder device separately, which saves the cost of the enterprise and helps the enterprise occupy a market share in the competition. favorable position. At the same time, since the television program is always in standby, the television program does not produce sound, so there is no impact on the noise collection module, which improves the accuracy of noise monitoring.

The above is only a preferred embodiment of the present invention, it should be pointed out that, for those of ordinary skill in the art, without departing from the principle of the present invention, some improvements and modifications can also be made, and these improvements and modifications can also be made. It should be regarded as the protection scope of the present invention.

Claims (2)

1. a device that detects televisor exterior circumferential environmental noise, is characterized in that, comprising: noise gathering module, for detection of the intensity of televisor external noise, and is transferred to detected external noise signal value the submaster controller of televisor; The submaster controller of televisor, be used for receiving described external noise signal value, and whether the described external noise signal value of judgement is greater than default noise signal upper limit reference value, if send prompting alerting signal to prompting alarm module, if not, control the intensity of described noise gathering module continuation detection televisor external noise; Prompting alarm module, the prompting alerting signal of sending for receiving described submaster controller, and point out warning; Power module, is used to described submaster controller, noise gathering module and prompting alarm module that operating voltage is provided; Described noise gathering module comprises: for receiving the microphone of external noise signal; For the amplifying circuit that external noise electrical signal amplitude is amplified; The current rectifying and wave filtering circuit that waveform larger fluctuation in noise electric signal is removed; And, the noise electric signal after rectifying and wave-filtering is converted to the A/D change-over circuit of digital signal; Described power module is the power panel of televisor, and it provides operating voltage to described submaster controller, noise gathering module and prompting alarm module respectively; The standby voltage that the operating voltage that described power panel provides to described noise gathering module is televisor, described power panel provides operating voltage by DC/DC change-over circuit to described submaster controller, described prompting alarm module.

2. the device of detection televisor exterior circumferential environmental noise according to claim 1, is characterized in that, described prompting alarm module comprises: LED lamp, and the alerting signal of sending for receiving submaster controller, the line flicker of going forward side by side is reported to the police; Hummer, the alerting signal of sending for receiving submaster controller, and carry out audible alarm; Television screen, the alerting signal of sending for receiving submaster controller, and light prompting warning.

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