CN204698241U - Safe and intelligent is rested the head on - Google Patents

Abstract

Both can be user's neck and a comfortable safe support was provided, and the strong sound field in region can have been produced again and remind its proper neck posture, also answer the safe and intelligent headrest of mobile intelligent terminal incoming call, navigation directions and broadcasting music media by the strong sound field in region.Comprise be designed to according to principle of human engineering the available protecting human body basal part of the ear, ear rear region to be filled in pillow in pillowcase to the headrest profile of neck area and sizing, the postmedian that headrest can touch with user's neck is provided with induction zone, is provided with at least one intelligence sensor in the pillow corresponding with this induction zone; The leading note passage of broadcaster outside pillowcase is respectively equipped with in the both sides of pillow, the sound produced by broadcaster forms a strong sound field in region be positioned near user's basal part of the ear through this leading note passage outside this headrest, and broadcaster opens online function after matching by bluetooth and intelligent mobile terminal.It is by making user realize various identification and acquisition of information to the control of the strong sound field in region.

Description

Safe and intelligent is rested the head on

Technical field

The utility model relates to a kind of wearable electronic carrier, particularly a kind of intelligence headrest with protection neck functional being suitable for being arranged on backrest or on the portable user's of being worn on neck.

Background technology

Usually, the backrest in office, family or in automobile installs a headrest made by flexible material.When being sitting in user that on this seat, neck is overtired and leaning against on this headrest, soft headrest can bring to it comfortablely to be felt easily, can reduce degree of fatigue fast thus.In addition, for person for driving a car, after emergency brake, wear be contained in headrest on its backrest also its neck of available buffer to the impulsive force in recoil, its neck is played a protective role.

Headrest of the prior art mainly contains ordinary headrest, travelling gas-filled headrest and massage headrest.And these headrests and user's neck to be in which kind of spatiality be that best using state is (when as the aforementioned cushioning recoil; the best protection spatiality of headrest to neck), headrest of the prior art be cannot and user between produce intelligent interaction and point out.

Utility model content

The technical problems to be solved in the utility model is to provide a kind of user's neck that both can be and provides comfortable safe support, can produce again the strong sound field in region reminds user to rectify neck posture, also answers the safe and intelligent headrest of mobile intelligent terminal incoming call, navigation directions and broadcasting music media by the strong sound field in described region.

In order to solve the problems of the technologies described above, the technical solution adopted in the utility model is:

Safe and intelligent headrest of the present utility model, comprise be designed to according to principle of human engineering the available protecting human body basal part of the ear, ear rear region to be filled in pillow in pillowcase to the headrest profile of neck area and sizing, the middle part that headrest can touch with user's neck or rear portion are provided with induction zone, are provided with at least one intelligence sensor in the pillow corresponding with this induction zone, be respectively equipped with in the both sides of described pillow and be provided with the left tone chamber of broadcaster and right tone chamber in flexible sound insulation material is formed, be provided with several at the leading flank of each tone chamber and lead to leading note passage outside pillowcase, the sound produced by described broadcaster forms one through this leading note passage and has volume outside this headrest, the strong sound field in region of spectral filtering and audio mixing, the strong sound field in this region is positioned near this user's basal part of the ear when user's neck presses close to described induction zone, described broadcaster opens online function after matching by bluetooth and intelligent mobile terminal, or automatically open off line prompting function when finding out unusual fluctuation by the sensor be arranged in described induction zone, the control circuit comprising central processing unit be connected with various kinds of sensors with described broadcaster is also provided with in this pillow.

Be provided with at the periphery of this headrest sound detection region of finding a chance to pick up some money, in this finds a chance to pick up some money sound detection region, be provided with the mini microphone of noise in several leakage sounds that can play hand-free call function and detecting described region strong sound field, surrounding enviroment and abnormal noise.

In described pillow, be also provided with detection user neck touch the dependence pressure of described headrest and the pressure sensor of speed or acceleration transducer and open according to the trigger signal of described pressure sensor or acceleration transducer perception the pairing identification module conversed with mobile intelligent terminal by central processing unit.

Also be provided with in described pillow and judge that the whether correct gesture recognition module of both forward and reverse directions worn by this headrest by acceleration transducer.

In described pillow, be also provided with safe early warning prompting module, this module has according to the player plays that the live sound loudness that target bearing occurs controls this target bearing respective side respectively the sound effect signal that azimuth information loudness reminds.

Described central processing unit according to other sensor senses arranged in described mini microphone, pressure sensor, acceleration transducer or induction zone to sound, pressure, acceleration or sensing directional data depart from preset value time start emergent recording mechanism and the emergent coordinator of mobile intelligent terminal described in being started by Bluetooth pairing and setting or server background system are connected.

The length of described leading note passage is not less than 2cm, described leading note passage outer soft, and its inwall is combined by least one had in the metal of sound damping, glass or rubber and forms.

Also be provided with in described control circuit by described mini microphone, the controlled hypnotic relaxation music module of pressure sensor and acceleration transducer Auto-Sensing and assessment surrounding environment peace and quiet degree and/or comfort level and abnormal trend prompting module, described hypnotic relaxation music module can match with mobile intelligent terminal or in real time adjust suitable volume of music via central processing unit according to described quiet degree and comfort level assessed value by being connected peripheral hardware music player, spectral filtering and audio mixing also play music by described broadcaster, described abnormal trend prompting module can be play brute force by voice synthesis strengthening music reminding intensity by described broadcaster via central processing unit and change awake music or alarm clock music.

Described acceleration transducer and central processing unit are configured to automobile anti-theft alarm module, started after anti-theft modes by intelligent terminal, automatically start when this acceleration transducer detects car body and seat unusual fluctuation emergency environmental recording and sensor information real time record relate to acceleration, speed, position, orientation or sound information and attempt utilizing Bluetooth wireless communication means prompting user.

Described headrest is also provided with and hangs up touch switch that described broadcaster is connected with mobile intelligent terminal and by detecting the feedback module that speech signal to noise ratio is automatically closed described broadcaster and terminated current talking or broadcasting.

The profile of safe and intelligent headrest of the present utility model adopts principle of human engineering design; rely on or rely on it to protect in emergency situations when its profile is suitable for user's rest; it is made up of pillowcase and pillow, and pillow is filled in pillowcase after being shaped by flexible material, its suppleness and comfort level tool good.The utility model adopt to arrange in the middle part of this headrest, rear portion or end some class sensors can be installed induction zone, arrange in the pillow of its both sides in being made up of acoustic material be provided with broadcaster tone chamber, to be arranged through the leading note passage be located in pillow in its both sides and the audio frequency of described broadcaster to be exported the strong sound field in region that spreads out of and matched by bluetooth and intelligent mobile terminal and open described broadcaster and the structure of the control circuit comprising central processing unit is set in pillow afterwards, make to form intelligent interaction between this headrest with user and be connected.By making user realize various identification and acquisition of information to the Sound control of the strong sound field in region, such as body temperature, fatigue strength, tensity, vital sign etc., simultaneously as smart machine, the state of surrounding environment can be caught by warning, prompting predictive of safety, also can provide sectional perspective environment, such as sound equipment, loosen, sleep, the multiple-working mode such as to wake up.

Accompanying drawing explanation

Fig. 1 is floor map of the present utility model.

Fig. 2 is the schematic diagram of the present utility model of U-shaped profile.

Reference numeral is as follows:

Headrest 1, induction zone 2, broadcaster 3, leading note passage 4, the strong sound field 5 in region, sound detection region 6 of finding a chance to pick up some money, charging rack 7, sensor 8.

Detailed description of the invention

As shown in Figure 1, safe and intelligent of the present utility model headrest is made up of pillowcase, pillow, and pillowcase is made by flexible material, and pillow is filled in pillowcase after being shaped by suppleness and the good flexible material of comfort level tool.This headrest 1 is applicable to multiple occasion, as being arranged in office or car on backrest, also when travelling rest when pillow uses, also can fixingly when driving can use on the seat.For user's neck, it both can play buffer protection function, can play again object that is comfortable and protection neck.

Be provided with induction zone 2 at the middle part of headrest 1, be provided with in the pillow of this induction zone 2 correspondence and possess multi-functional some class sensors 8 perhaps.

The tone chamber be made up of ageing-resistant flexible sound insulation material (the utility model selects butyl rubber and metal material to combine) is provided with in the pillow of the both sides of this headrest 1, be respectively left tone chamber and right tone chamber, in each tone chamber, lay the independent broadcaster 3 controlled, each broadcaster 3 is connected with the control circuit be arranged in pillow.By tone chamber's leading flank, (direction contacted with user's neck is front, after back to the direction of neck being, lower same) to the surperficial leading note passage 4 being provided with some the audio signals that broadcaster 3 can be exported and deriving of pillowcase, the outlet of these leading note passages 4 converges to the strong sound field 5 in region that pillowcase both sides form sectional perspective sound.The strong sound field 5 in this region is positioned near this user's basal part of the ear when user's neck presses close to described induction zone 2, the sound of the strong sound field in this region 5 only user can clearly be heard.Described broadcaster 3 is opened after matching by bluetooth and intelligent mobile terminal (as smart mobile phone, iPad etc.), or matches open afterwards by being arranged at activating sensor in described induction zone 2 and intelligent mobile terminal.Namely when mobile intelligent terminal is called out, user can utilize contacting gently of neck and headrest 1 or position changes gently and opens described broadcaster 3, by broadcaster 3 output incoming audio signal, now, ears are in the strong sound field 5 in described region of best sound broadcasting.In this situation, headrest 1 does not need to come in contact with ear, and the local sound field that the strong sound field 5 in region is formed can when not pressing close to ear, makes that user is clear listens to caller voice.

Described leading note passage 4 length is not less than 2cm, and it can be hole shape passage, also can for the channel of acoustic wave be made up of the material that sound conductivity is good.

Described control circuit comprises central processing unit, memory, battery and power management module etc.

Further improvement of the utility model is also provided with to detect user neck and touch the dependence pressure of described headrest 1 and the pressure sensor of speed and acceleration transducer and to be controlled by central processing unit and by the ram compression warning reminding module of described broadcaster 3 output audio in described pillow.Dependence pressure and speed are used to assess user's tensity, level of comfort and degree of danger etc.

When person for driving a car in the process of moving, when its neck contacts with headrest 1, when the information that described pressure sensor and acceleration transducer perceive is in setting value corresponding to gentle information, can illustrate that this user is in safe relaxation state.

And the information perceived when the sensor 8 is severe, fast, to wave etc. when being regarded as abnormal pressure and setting value corresponding to speed, then illustrate that this person for driving a car is likely under fatigue state or abnormality occurs, now, this signal is sent to described central processing unit by pressure sensor and/or acceleration transducer, central processing unit starts mobile intelligent terminal by the position of this person for driving a car and perception status information reporting to the emergent coordinator pre-set or mobile intelligent terminal server background system by Bluetooth pairing automatically, start sound that headrest 1 surrounding occurs by SoundRec function and Sensor Data Record gets off simultaneously.

Even if during mobile intelligent terminal incoming call, if when pressure sensor and/or acceleration transducer detect fast vibration or unusual fluctuation, equally, central processing unit starts mobile intelligent terminal by the position of this person for driving a car and perception status information reporting to the emergent coordinator pre-set or mobile intelligent terminal server background system by Bluetooth pairing automatically, starts SoundRec function simultaneously and is got off by the SoundRec that headrest 1 surrounding occurs.

Another improvement of the present utility model be also be provided with in described pillow the direction feeling of relative gravity can be utilized automatically to screen both sides broadcaster be positioned at orientation, end user actual left and right, the Lookup protocol broadcaster be positioned on the left of end user is left broadcaster, the broadcaster be positioned on the right side of end user is right broadcaster, namely utilizes the left-right relation of correct identification headrest both sides, gravity orientation and end user's reality.Namely acceleration transducer can also monitor headrest and gravitational field relative angle, and the orientation of relative gravity can be utilized automatically to screen the actual of left and right broadcaster put relation.According to gravitational field angle, the automatic setting broadcaster be positioned on the left of user is designated as left broadcaster, and the broadcaster being physically located in right side is designated as right broadcaster, even if thus guarantee user puts upside down use headrest because of carelessness, its headrest can correct the correctness of left and right directions sense automatically, and the broadcaster be namely positioned on the left of headrest end user is be assigned automatically as left broadcaster provides left side prompting message to use forever.

The strong sound field in described region 5 lays respectively at left right ear side and is independently controlled, and can combine and plays stereo or independently play for pointing out the acoustic information possessing left and right orientative feature.This independently possesses the sound of orientative feature, the smart machine coming from other ambient sensors 8 or matched with this headrest 1.It comprises possess orientative feature danger signal (as left and right microwave radar find out the automobile of fast approaching after according to car orientation early warning) and possess the navigation hint (as left steering or right turn) etc. of orientative feature, the prompting possessing orientative feature is utilized independently strength control intensifier direction feeling by left and right broadcaster 3.Acceleration transducer can utilize the orientation of relative gravity automatically to screen left and right broadcaster 3, thus ensures that correct control left and right broadcaster 3 sends the correct prompting with direction feeling all the time.The prompting of its azimuth information is a kind of sound prompting form making full use of human body natural reaction, namely when danger is from allowing people in the danger bearing of instinct perception fast by the sound in strengthening left side during left side and making instinct conditioned reflex.

Acceleration transducer also can be used to the prompting of the locus departure degree detecting relative gravity direction between user's neck and described headrest 1, for user's memory and customized seat wear position hobby feature, can automatically produce prompting during this shift in position and be connected to described central processing unit and export relevant audio prompt information by described broadcaster 3.The hobby monitoring of this position can also be used for automobile burglar status monitoring, once the position burst variation in headrest relative gravity direction, may be used for triggering automobile anti-theft alarm.

Namely when headrest 1 is worn on user's neck; whether this headrest 1 is in optimal comfort state with user's neck; by described audio prompt information realization; optimal audio is listened to state and is regarded as optimum guard mode; ensure the suitable protection of basal part of the ear sidepiece, rear portion and neck because this structure is structural design, best sound reception area just constrains protected position to be surrounded protection by flexible material.

An improvement more of the present utility model is provided with at described periphery of leading sound detection region 6 of finding a chance to pick up some money, and in this finds a chance to pick up some money sound detection region 6, be provided with the Mic that several can play hand-free call function and detecting periphery leakage sound, described Mic is connected with induction zone 2.The leakage message number detected is fed back to central processing unit by sound detection region 6 of finding a chance to pick up some money, carry out the adjustment of sound Play Control (to be central processing unit and feedback is provided, thus described broadcaster 3 audio frequency is exported to the sound wave filtering and optimization reprocessing of making necessity), Mic is also used to speech hit detect function simultaneously, realizes intelligent terminal hand-free call function; Mic also may be used for danger early warning for detecting abnormal noise.As strong strike note, explosive sound, wind noise etc. in surrounding enviroment.

Another improvement of the present utility model is: described central processing unit to be connected with vehicle-mounted left and right microwave radar by the means of communication such as bluetooth or WiFi and the peripheral situation of being found out by this microwave radar or traffic state are exported with stereo condition by described broadcaster 3; Described central processing unit to be connected with on-vehicle navigation apparatus by the means of communication such as bluetooth or WiFi and the turning information of this guider perception is exported with stereo condition by described broadcaster 3.

Described broadcaster 3 possesses clear and definite left and right orientative feature, its feature can redefine by degree of being accelerated sensor, guarantee that correct orientation, left and right corresponding relation is (if namely user is not intended to be inverted headrest 1, central processing unit still correctly can judge the orientation, left and right of correct reality, thus ensure the correct prompting possessing azimuth information), its left and right feature is by the clear and definite prompting sound playing function for possessing azimuth information, and the prompting of this azimuth information can from other ambient sensors 8 or the mobile intelligent terminal matched with it.Such as when automobile is provided with rear side velocity radar, once radar monitoring has automobile fast approaching to left side, namely headrest 1 of the present utility model is sent information to, the early warning signal that this headrest 1 can utilize this to possess left and right orientative feature utilizes the broadcaster 3 in left side to strengthen and plays, dangerous to point out left side, this technology can effectively utilize the conditioned reflex of human body instinct to make fast reaction, namely people is allowed to notice the dangerous situation checking degree in left side the most fast, and judge that without the need to taking time which side is left side, and exactly other instinct antedating response of this Millisecond can reduce the probability of happening of hazard event greatly, and by the independent control sound in three-dimensional bilateral local, the fast reaction conditioned reflex instinct that can make full use of human body reaches best and reminds effect.

The reminding technology of this azimuth information is also reminded for auto navigation, and namely mobile intelligent terminal gives real orientation digital information by turning to remind while speech play, this headrest 1 can remind accurately driver correct turn to orientation.

Described acceleration transducer forms automobile anti-theft alarm module by central processing unit, this acceleration transducer automatically starts emergent writing function and comprises environment recording, orientation, acceleration, speed, position etc. when detecting unusual fluctuation, and attempts utilizing wireless communication means to point out user.

Namely utilize acceleration transducer to detect the angle in headrest relative gravity direction, and store and comparison as seat hobby, after user can be pointed out to adjust seat, correct resetting into initially likes position, and memory different people hobby, restores according to prompting adjustment.This acceleration transducer is also for automobile burglar monitor state simultaneously, namely under automobile enters antitheft detecting pattern, once acceleration transducer detects variation, automatically starts environment sound-recording function and attempts utilizing wireless communication means to point out user.

Described headrest 1 is also provided with and hangs up touch switch that described broadcaster 3 is connected with mobile intelligent terminal and by detecting speech signal to noise ratio in real time, central processing unit can judge voluntarily not converse and requires and automatically cut out described broadcaster 1 and end current talking or music.I.e. natural contral instruction mode.The utility model headrest 1, in phone access situation, can control incoming call answering by light headrest pillow 1; Hanging up calling is controlled by the touch switch in hand touch head occipital face; Simultaneously also in not touch head occipital face situation, automatically detect speech signal to noise ratio by central processing unit, after without a period of time of communicating data, automatically terminate current talking or music, while speech recognition controlled automatically supported as a kind of current techique.

Also charging rack 7 can be installed at described headrest 1 back.

This headrest 1 both can be installed on seat or specific on frame by this charging rack 7, and also can be used as charging device is that battery in this headrest 1 charges.

During first use the utility model, this headrest 1 uses the sound headrest 1 that it is worn as Beacon Alert user whether to be in optimum state, and (optimum state is that the basal part of the ear of corresponding user in the middle part of headrest 1 is to neck area, this state is best protection state for user), and transmit speech with intelligent terminal/mobile communication, music, the intelligent neck protection headrest 1 of data and reminiscences, headrest 1 utilizes direct sound broadcaster 3 to form local Sound control containing Long travel (being longer than 2cm) sound wave leading note passage 4, thus independent local sound field is set up in bilateral basal part of the ear portion, namely the sound away from bilateral basal part of the ear position is minimum, therefore user utilizes the wearing position that this local sound can determine whether as the best, when namely hearing best sound, corresponding wearing position represents tram.

As further Function Extension, the actuator etc. such as wireless communicator (as bluetooth, WiFi, Zigbee, 3G, 4G etc.), various kinds of sensors 8 (magnetosensitive, temperature, infrared body-temperature detector, acceleration transducer, gyroscope, GPS, formaldehyde gas detector, dust detector, light sensor etc.), loudspeaker, microphone, photophore, vibrator can also be set in headrest 1 of the present utility model.

The utility model can be used for vehicle headrest 1 purposes, and can match with mobile phone, realize Bluetooth audio device, application software is formulated in intelligent terminal installation, and the controlling functions that can be enhanced after running this software, and do not installing in application specific software situation, bluetooth conversation and the music playback function of standard can be started.Formulate application software and can control the central processing unit of headrest 1 to all parts management and configuration by intelligent terminal, realize various fancy setting and function setting, as hypnosis pattern, awakening mode.

Local sound field is effective prompting and indicator, effectively wears and can obtain best sound, is also namely among normal manipulation environment.

The application such as intelligent alarm clock, intelligent hypnosis, sleep quality monitoring, fatigue strength monitoring, the tensity monitoring performance that the functions such as awake and body temperature detection are the enforcement based on utilizing biosensor analysis to judge is changed in described intelligent hypnosis, intelligence.

Another Application citing of the present utility model:

As shown in Figure 2, as the U-shaped headrest 1 of portable intelligent, can be used in travelling, comfortable headrest 1 is provided, carry out intelligence by described broadcaster 3, central processing unit simultaneously and play, reach hypnosis pattern, awakening mode, relaxed mode etc. special-effect.

To sleep the intelligent selection sound equipment results of broadcast such as detection according to the detection of pressure and (motion).

Claims (10)

1. a safe and intelligent headrest, comprise be designed to according to principle of human engineering the available protecting human body basal part of the ear, ear rear region to be filled in pillow in pillowcase to headrest (1) profile of neck area and sizing, it is characterized in that: the middle part that can touch with user's neck on headrest (1) or rear portion are provided with induction zone (2), in the pillow corresponding with this induction zone (2), be provided with at least one intelligence sensor (8), be respectively equipped with in the both sides of described pillow and be provided with the left tone chamber of broadcaster (3) and right tone chamber in flexible sound insulation material is formed, be provided with several at the leading flank of each tone chamber and lead to leading note passage (4) outside pillowcase, the sound produced by described broadcaster (3) forms one through this leading note passage (4) outward at this headrest (1) and has volume, the strong sound field in the region (5) of spectral filtering and audio mixing, the strong sound field in this region (5) is positioned at when user's neck presses close to described induction zone (2) near this user's basal part of the ear, described broadcaster (3) opens online function after matching by bluetooth and intelligent mobile terminal, or automatically open off line prompting function when finding out unusual fluctuation by the described sensor (8) be arranged in described induction zone (2), the control circuit comprising central processing unit be connected with various kinds of sensors with described broadcaster (3) is also provided with in this pillow.

2. safe and intelligent headrest according to claim 1, it is characterized in that: be provided with at the periphery of this headrest (1) sound detection region (6) of finding a chance to pick up some money, in this finds a chance to pick up some money sound detection region (6), be provided with the mini microphone that several can play leakage sounds of hand-free call function and the detecting strong sound field in described region (5), the noise in surrounding enviroment and abnormal noise.

3. safe and intelligent headrest according to claim 2, is characterized in that: in described pillow, be also provided with detection user neck touch the dependence pressure of described headrest (1) and the pressure sensor of speed or acceleration transducer and open according to the trigger signal of described pressure sensor or acceleration transducer perception the pairing identification module conversed with mobile intelligent terminal by central processing unit.

4. safe and intelligent headrest according to claim 3, is characterized in that: be also provided with in described pillow and judge that the whether correct gesture recognition module of both forward and reverse directions worn by this headrest by acceleration transducer.

5. safe and intelligent headrest according to claim 4, it is characterized in that: in described pillow, be also provided with safe early warning prompting module, the broadcaster (3) that this module controls this target bearing respective side respectively according to the live sound loudness that target bearing occurs plays the sound effect signal having azimuth information loudness and remind.

6. the safe and intelligent headrest according to any one of claim 3-5, is characterized in that: described central processing unit according to other sensor senses arranged in described mini microphone, pressure sensor, acceleration transducer or induction zone (2) to sound, pressure, acceleration or sensing directional data depart from preset value time start emergent recording mechanism and the emergent coordinator of mobile intelligent terminal described in being started by Bluetooth pairing and setting or server background system are connected.

7. safe and intelligent headrest according to claim 1, it is characterized in that: the length of described leading note passage (4) is not less than 2cm, described leading note passage (4) outer soft, its inwall is combined by least one had in the metal of sound damping, glass or rubber and forms.

8. safe and intelligent headrest according to claim 6, it is characterized in that: be also provided with by described mini microphone in described control circuit, the controlled hypnotic relaxation music module of pressure sensor and acceleration transducer Auto-Sensing and assessment surrounding environment peace and quiet degree and/or comfort level and abnormal trend prompting module, described hypnotic relaxation music module can match with mobile intelligent terminal or in real time adjust suitable volume of music via central processing unit according to described quiet degree and comfort level assessed value by being connected peripheral hardware music player, spectral filtering and audio mixing also play music by described broadcaster (3), described abnormal trend prompting module can be play brute force by voice synthesis strengthening music reminding intensity by described broadcaster (3) via central processing unit and change awake music or alarm clock music.

9. the safe and intelligent headrest according to claim 4 or 5, it is characterized in that: described acceleration transducer and central processing unit are configured to automobile anti-theft alarm module, started after anti-theft modes by intelligent terminal, automatically start when this acceleration transducer detects car body and seat unusual fluctuation emergency environmental recording and sensor information real time record relate to acceleration, speed, position, orientation or sound information and attempt utilizing Bluetooth wireless communication means prompting user.

10. safe and intelligent according to claim 8 headrest, is characterized in that: be also provided with on described headrest (1) and hang up touch switch that described broadcaster (3) is connected with mobile intelligent terminal and pass through to detect the feedback module that speech signal to noise ratio automatically closes described broadcaster (3) and terminate current talking or broadcasting.