CN114373294A - Sound prompting device and method for automatically adjusting volume based on environmental noise - Google Patents
Sound prompting device and method for automatically adjusting volume based on environmental noise Download PDFInfo
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- G—PHYSICS
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- G08G1/00—Traffic control systems for road vehicles
- G08G1/005—Traffic control systems for road vehicles including pedestrian guidance indicator
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- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
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- G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
- G10L21/00—Processing of the speech or voice signal to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
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Abstract
The invention relates to the technical field of traffic indication, in particular to a sound prompting device and a method for automatically adjusting volume based on environmental noise. The ambient noise detection module collects noise in real time, and noise pollution caused by played volume is avoided. The traffic light state detection module detects the state of the traffic light in real time, different contents are played according to the state of the traffic light, waiting personnel are reminded in real time, and the safety of the personnel is improved. Different parameters are only required to be set in the parameter setting module according to different used areas, and different use scenes can be met.
Description
Technical Field
The invention relates to the technical field of traffic indication, in particular to a sound prompting device and a method for automatically adjusting volume based on environmental noise.
Background
The pedestrian crossing sound prompting device (hereinafter referred to as a prompting device) plays different voices according to the states of traffic lights to prompt pedestrians (especially blind persons) to wait for green lights when the red lights are on, and to safely pass when the green lights are on.
The chinese patent CN202121181732.7 discloses an intelligent street crossing sound system, a mobile terminal and an interactive prompting device, where the intelligent street crossing sound system includes a mobile terminal and an interactive prompting device, when a visually impaired person is located at a traffic light intersection, an electronic radio frequency tag reading module of the interactive prompting device arranged at the intersection can receive configuration information in an electronic radio frequency tag module in the mobile terminal, a second communication module of the interactive prompting device establishes a communication link with a first communication module of the mobile terminal according to the configuration information, and sends traffic light information to the mobile terminal, and the mobile terminal broadcasts a current traffic condition through the prompting device after receiving the traffic light information. The mobile terminal can sense with the interactive prompting device, and people with visual impairment do not need to specially carry the electronic radio frequency note card when going out. By adopting the scheme, the corresponding effect can be obtained only by carrying the corresponding card on the body of a person, and the corresponding prompt effect cannot be obtained under the condition of no card;
the Chinese patent CN201821487379.3 discloses a street crossing sound prompting device based on environment noise intelligent volume adjustment, which comprises a power input unit for continuously providing electric energy for the device, a power conversion unit connected with the power input unit, and a traffic light signal acquisition unit, wherein the power conversion unit is connected with a microphone signal acquisition unit for acquiring road traffic sound, a microphone signal processing unit, a double-MOS geminate transistor driving unit, a microphone signal conversion unit and a CPU control unit, the double-MOS geminate transistor driving unit is connected with a prompting unit, the CPU control unit is connected with the microphone signal processing unit, and the traffic light signal acquisition unit. By introducing the intelligent detection of the environmental noise into the street crossing sound prompting device and adjusting the output of the volume of the loudspeaker according to the volume of the environmental noise, the noise collected by the microphone signal collecting unit is the noise value of single-point volume, the influence of interference noise is easy to appear, so that the sound of the playing volume is overlarge, and the noise pollution is caused,
the existing products generally adjust the volume by the preset volume value of the time period (i.e. the volume is different in different time periods); if the preset volume value is larger, the broadcast voice is larger, noise pollution is easy to form, if the preset volume value is smaller, the broadcast volume is smaller, and when the surrounding noise is larger, pedestrians cannot hear clearly; after long-time operation, the clock deviation of the prompting device is larger and larger, and the actual time interval division needs are deviated.
Disclosure of Invention
In order to solve the problems, the invention provides a sound prompting device and a method for automatically adjusting volume based on environmental noise, wherein the environmental noise detection module is used for collecting the environmental noise in a certain time period in real time and calculating the average value of the noise in the time period, the precision of the collected noise is higher, and meanwhile, the main control module has a higher noise average value to obtain the size of output volume, so that the played content is easier to be heard by waiting people; simultaneously, the ambient noise detection module collects noise in real time, and the main control module controls the voice and power amplification module in real time according to the noise collected by the ambient noise detection module and adjusts the volume in real time, so that noise pollution caused by the played volume is avoided
The invention also aims to provide a sound prompting device and method for automatically adjusting the volume based on the environmental noise, which can detect the state of the traffic light in real time through the traffic light state detection module, play different contents according to the state of the traffic light, remind waiting personnel in real time and improve the safety of the personnel. Different parameters are only required to be set in the parameter setting module according to different used areas, and different use scenes can be met.
In order to achieve the purpose, the invention adopts the technical scheme that:
the utility model provides a sound suggestion device based on ambient noise automatically regulated volume, includes ambient noise detection module, traffic lights state detection module, parameter setting module, parameter storage module, pronunciation and efficiency module and host system, wherein:
the environmental noise detection module is used for picking up noise decibels in real time and recording the noise decibels as Yn and calculating the sound intensity of environmental noise and recording the sound intensity as Yj;
a traffic light state detection module for detecting and picking up the voltage value of the traffic light circuit in real time and recording the voltage value as Vn, calculating the voltage value of the traffic light circuit and recording the voltage value as Vi,
the parameter setting module is used for setting a preset sound intensity increasing threshold Yu, a maximum sound intensity limiting threshold Ymax, a minimum sound intensity limiting threshold Ymin and a voltage threshold Vi, and the Vi range is V1-V2; wherein V1-is the upper limit value of the voltage threshold; v2-is the lower limit value of the voltage threshold;
the parameter storage module is used for storing all numerical values in the parameter setting module;
the voice and efficacy module controls the loudspeaker to broadcast voice and volume corresponding to the traffic light state through the voice and power amplification module;
the main control module receives the data of the ambient noise detection module and the traffic light state detection module in real time, compares the data with a storage threshold value in the parameter storage module in real time and controls the voice and efficacy module to output;
the main control module obtains the current environment noise sound intensity Yj, adjusts the volume of the loudspeaker according to the sound intensity value by the sound intensity value corresponding to the query in the storage module and the voice and efficacy module, obtains the current traffic light circuit voltage value Vi, adjusts the playing content of the loudspeaker according to the voltage threshold Vi by the voice and efficacy module corresponding to the query in the storage module and the current traffic light circuit voltage value Vi; the main control module obtains the parameters set in the parameter setting module and stores the set parameters in the parameter storage module.
Preferably, the ambient noise detection module comprises a noise pickup module and a sound intensity calculation module,
the noise pickup module picks and records the current environmental noise decibel in real time and records the current environmental noise decibel as Yn;
the sound intensity calculating module calculates the sound intensity through a first calculation function of the sound intensity, wherein the first calculation function of the sound intensity is as follows:
the N-sound intensity calculation module and the noise pickup module pick up Yn within a certain time period, wherein N is more than or equal to 3; yj-the overall average of Yn that is picked N times over a certain time period for the noise pickup module.
Preferably, the traffic light state detection module comprises a red light detection module and a green light detection module, wherein a voltage pickup module and a voltage calculation module are respectively arranged in the red light detection module and the green light detection module,
the voltage pickup module is used for acquiring a voltage value Vn on a traffic light line in a time period in real time;
the voltage calculation module calculates the voltage through a second calculation function, wherein the second calculation function is as follows:
the N-voltage calculation module picks up the recording times of Vn in a certain time period;
ti-is any percentage value of 1-99%, and the percentage value adopted by the invention is 70%;
vi-is the percentage value of the average of the N Vn times the voltage pickup module picks up over a certain time period;
preferably, the main control module includes an output sound intensity calculation module, and a third calculation function Y ═ Yj + Yu is provided in the output sound intensity calculation module;
yj-is the average value of noise picked up by the environment noise detection module in a certain time period;
yu-is a preset sound intensity increase threshold value stored in the parameter storage module;
y-is the output sound intensity value.
Preferably, the traffic light state detection module and the ambient noise detection module are both provided with a time timing module, and the time timing module is used for setting a picking interval of the noise picking module and the voltage picking module within a certain time period.
Preferably, the main control module is further provided with a mode selection module, and the mode selection module is provided with a fixed mode and an adjusting mode; when the fixed mode acts on the parameter setting module, the volume output by the voice and efficacy module is the maximum sound intensity limit threshold Ymax or the minimum sound intensity limit threshold Ymin and is output; the adjusting mode is used for adjusting the volume output by the voice and efficacy module in real time according to the environmental noise.
A sound prompt control method for automatically adjusting volume based on environmental noise comprises the following steps:
s1, initializing, and reading various parameters in the parameter storage module by the main control module;
s2, detecting the parameters, detecting whether the parameter setting module sets new parameters, if the parameters are modified, using the new parameters, otherwise, using the parameters in the parameter storage module;
s3, detecting the state of the traffic lights and the sound intensity of environmental noise, and detecting the voltage percentage value V of the traffic light line in real time through a traffic light state module; detecting the noise in the surrounding environment in real time through the environmental noise sound intensity detection and calculating the sound intensity Yj;
s4, the main control module receives the voltage percentage value V in the S3, and the main control module judges the traffic light state according to the voltage percentage value V and sends a traffic light state instruction to the voice and power amplification module;
s5, the main control module receives the sound intensity Yj in the S3 and judges the working mode;
s6, if the working mode is the adjusting mode, the main control module sends the output sound intensity value Y to the voice and power amplification module;
s7, if the working mode is a fixed mode, the control module sends a traffic light state instruction and a maximum sound intensity limiting threshold value Ymax to the voice and power amplification module;
and S8, the voice and power amplifier module receives the instruction and controls the playing content and the playing volume of the loudspeaker.
Preferably, the traffic light state detecting step is as follows:
s401, detecting a transmission voltage percentage value V to a main control module by traffic light state detection;
s402, judging whether the voltage percentage value received by the main control module belongs to a voltage threshold Vi in the parameter storage module;
s403, if the voltage percentage value V is within the voltage threshold value Vi, sending a command for opening the playing content to the voice and power amplifier module;
s404, if the voltage percentage value V is not in the voltage threshold value Vi, sending a command of closing the playing content to the voice and power amplification module;
preferably, the output sound intensity value determination step is:
s410, the main control module receives the sound intensity Yj emitted by the environment noise detection module;
s411, the main control module calculates the transmission sound intensity Y according to the received sound intensity Yj;
s412, the main control module judges whether the output sound intensity Y is larger than the maximum sound intensity limit threshold Ymax; and judging whether the output sound intensity Y is smaller than a minimum sound intensity limit threshold Ymin;
s413, if the output sound intensity Y is larger than the maximum sound intensity limiting threshold Ymax, sending the maximum sound intensity limiting threshold Ymax to the voice and power amplification module; otherwise, sending the output sound intensity Y to the voice and power amplification module;
s415, if the output sound intensity Y is smaller than the minimum sound intensity limiting threshold Ymin, the minimum sound intensity limiting threshold Ymin is sent to the voice and power amplification module; otherwise, the output sound intensity Y is sent to the voice and power amplification module.
The invention has the beneficial effects that: 1. gather a certain time quantum ambient noise and calculate the noise average value of this time quantum through ambient noise detection module in real time, the precision of gathering the noise is higher, and master control module has more the average value of noise simultaneously and reachs the size of output volume, and the content that reaches the broadcast is heard by waiting for the crowd more easily.
2. The noise is gathered in real time to ambient noise detection module, and simultaneously host system controls pronunciation and power amplifier module in real time according to the noise real time control that ambient noise detection module gathered to adjust the volume size in real time, avoid the volume of broadcast to cause noise pollution.
3. The traffic light state detection module detects the state of the traffic light in real time, different contents are played according to the state of the traffic light, waiting personnel are reminded in real time, and the safety of the personnel is improved.
4. Different parameters are only required to be set in the parameter setting module according to different used areas, and different use scenes can be met.
Drawings
FIG. 1 is a schematic diagram of the present invention.
Fig. 2 is a flow chart of the present invention.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
Referring to fig. 1, the sound prompt device for automatically adjusting volume based on ambient noise according to the present invention includes an ambient noise detection module, a traffic light state detection module, a parameter setting module, a parameter storage module, a voice and efficacy module, and a main control module, wherein:
the environmental noise detection module is used for picking up noise decibels in real time and recording the noise decibels as Yn and calculating the sound intensity of environmental noise and recording the sound intensity as Yj;
a traffic light state detection module for detecting and picking up the voltage value of the traffic light circuit in real time and recording the voltage value as Vn, calculating the voltage value of the traffic light circuit and recording the voltage value as Vi,
the parameter setting module is used for setting a preset sound intensity increasing threshold Yu, a maximum sound intensity limiting threshold Ymax, a minimum sound intensity limiting threshold Ymin and a voltage threshold Vi, and the Vi range is V1-V2; wherein V1-is the upper limit value of the voltage threshold; v2-is the lower limit value of the voltage threshold;
the parameter storage module is used for storing all numerical values in the parameter setting module;
the voice and efficacy module controls the loudspeaker to broadcast voice and volume corresponding to the traffic light state through the voice and power amplification module;
the main control module receives the data of the ambient noise detection module and the traffic light state detection module in real time, compares the data with a storage threshold value in the parameter storage module in real time and controls the voice and efficacy module to output;
the main control module obtains the current environment noise sound intensity Yj, adjusts the volume of the loudspeaker according to the sound intensity value by the sound intensity value corresponding to the query in the storage module and the voice and efficacy module, obtains the current traffic light circuit voltage value Vi, adjusts the playing content of the loudspeaker according to the voltage threshold Vi by the voice and efficacy module corresponding to the query in the storage module and the current traffic light circuit voltage value Vi; the main control module obtains the parameters set in the parameter setting module and stores the set parameters in the parameter storage module.
By adopting the scheme, the current environmental noise intensity Yj and the traffic light circuit voltage value Vi are picked up by the environmental noise detection module and the traffic light state detection module and are transmitted to the master control template, under the control of the master control module, the current environmental noise intensity Yj and the traffic light circuit voltage value Vi are matched with the standard threshold value in the storage module, and the playing volume and the playing content of the loudspeaker are controlled through the voice and efficacy module according to the standard threshold value matched with the current environmental noise intensity Yj and the traffic light circuit voltage value Vi.
The environment noise detection module comprises a noise pickup module and a sound intensity calculation module,
the noise pickup module picks and records the current environmental noise decibel in real time and records the current environmental noise decibel as Yn;
the sound intensity calculating module calculates the sound intensity through a first calculation function of the sound intensity, wherein the first calculation function of the sound intensity is as follows:
the N-sound intensity calculation module and the noise pickup module pick up Yn within a certain time period, wherein N is more than or equal to 3; yj-the overall average of Yn that is picked N times over a certain time period for the noise pickup module.
By adopting the scheme, the function is calculated through the first calculation function
The sound intensity input into the main control module by the environment noise detection module is an average value within a certain time period, so that the sound intensity input into the main control module by the environment noise detection module is prevented from being instantly overhigh or overlow sound decibels; and secondly, the average sound intensity is compared with the instantaneous sound intensity, so that the voice and efficacy module can adjust the volume of the loudspeaker to be suddenly high or low, and people waiting for the traffic light can listen to the broadcast content more clearly.
The traffic light state detection module comprises a red light detection module and a green light detection module, wherein a voltage pickup module and a voltage calculation module are respectively arranged in the red light detection module and the green light detection module,
the voltage pickup module is used for acquiring a voltage value Vn on a traffic light line in a time period in real time;
the voltage calculation module calculates the voltage through a second calculation function, wherein the second calculation function is as follows:
the N-voltage calculation module picks up the recording times of Vn in a certain time period;
ti-is any percentage value of 1-99%, and the percentage value adopted by the invention is 70%;
vi-is the percentage value of the average of the N Vn times the voltage pickup module picks up over a certain time period;
by adopting the scheme, the second stepCalculating a function
The voltage percentage value transmitted to the main control module by the traffic light state detection module is the percentage value of the average value of the voltage in a certain time period, and the more accurate current voltage value is obtained.
The master control module comprises an output sound intensity calculation module, and a third calculation function Y is set as Yj + Yu in the output sound intensity calculation module;
yj-is the average value of noise picked up by the environment noise detection module in a certain time period;
yu-is a preset sound intensity increase threshold value stored in the parameter storage module;
y-is the output sound intensity value.
Adopt above-mentioned scheme, through third function Y becoming Yj + Yu, realize giving pronunciation and power amplifier module with output sound intensity value Y transmission, the volume through pronunciation and power amplifier module control speaker is higher than the environment volume, transmits the broadcast content more clearly to waiting for in the traffic lights crowd.
The traffic light state detection module and the environmental noise detection module are respectively provided with a time timing module, and the time timing module is used for setting a picking interval of the noise picking module and the voltage picking module within a certain time period; in the invention, a time timing module in the noise pickup module is set to pick up the environmental noise for one time in 2-10 ms; a time timing module in the voltage pickup module sets 10-20ms for picking up the voltage of the traffic light line for one time;
by adopting the scheme, the corresponding numerical value is picked up in a short time, so that the precision of detecting radiography or voltage is more accurate, and the main control module more accurately controls the voice and the power amplifier module to make the content played by the loudspeaker more accurate.
The main control module is also provided with a mode selection module, and the mode selection module is provided with a fixed mode and an adjusting mode; when the fixed mode acts on the parameter setting module, the volume output by the voice and efficacy module is the maximum sound intensity limit threshold Ymax or the minimum sound intensity limit threshold Ymin and is output; the adjusting mode is used for adjusting the volume output by the voice and efficacy module in real time according to the environmental noise.
Referring to fig. 2, an audible prompting control method for automatically adjusting volume based on ambient noise includes the following steps:
s1, initializing, and reading various parameters in the parameter storage module by the main control module;
s2, detecting the parameters, detecting whether the parameter setting module sets new parameters, if the parameters are modified, using the new parameters, otherwise, using the parameters in the parameter storage module;
s3, detecting the state of the traffic lights and the sound intensity of environmental noise, and detecting the voltage percentage value V of the traffic light line in real time through a traffic light state module; detecting the noise in the surrounding environment in real time through the environmental noise sound intensity detection and calculating the sound intensity Yj;
s4, the main control module receives the voltage percentage value V in the S3, and the main control module judges the traffic light state according to the voltage percentage value V and sends a traffic light state instruction to the voice and power amplification module;
s5, the main control module receives the sound intensity Yj in the S3 and judges the working mode;
s6, if the working mode is the adjusting mode, the main control module sends the output sound intensity value Y to the voice and power amplification module;
s7, if the working mode is a fixed mode, the control module sends a traffic light state instruction and a maximum sound intensity limiting threshold value Ymax to the voice and power amplification module;
and S8, the voice and power amplifier module receives the instruction and controls the playing content and the playing volume of the loudspeaker.
Preferably, the traffic light state detecting step is as follows:
s401, detecting a transmission voltage percentage value V to a main control module by traffic light state detection;
s402, judging whether the voltage percentage value received by the main control module belongs to a voltage threshold Vi in the parameter storage module;
s403, if the voltage percentage value V is within the voltage threshold value Vi, sending a command for opening the playing content to the voice and power amplifier module;
s404, if the voltage percentage value V is not in the voltage threshold value Vi, sending a command of closing the playing content to the voice and power amplification module;
the specific implementation is as follows: storing a voltage threshold in the parameter storage module, where the voltage threshold is usually about 70% of the power supply voltage, for example, the power supply AC220V, and the voltage threshold Vi is AC220V × 70% AC154V, and since the AC voltage is usually a range fluctuating above and below the AC220V, for example, the voltage fluctuation range is between AC200V and AC240V, the voltage threshold Vi is AC140V to AC168V, and if the voltage percentage value V calculated in the traffic light detection module is AC 154V; if the electricity exists, the Greeni is 1 or Redi is 1, otherwise, the electricity-free Greeni is 0 or Redi is 0; continuously sampling multiple times Z (Z is more than or equal to 5) and then determining whether electricity exists, if a majority of times A (if A is more than or equal to Z-2) electricity exists, determining that electricity exists, and recording as G '═ 1 or R' ═ 1, if a minority of times M (if M is more than or equal to 2) electricity does not exist, determining that electricity does not exist, and recording as G '═ 0 or R' ═ 0; if G ≠ G 'or R ≠ R', then the traffic light state is considered to be changed, G 'is assigned, R' is assigned, otherwise, the traffic light state is considered to be kept unchanged, and Greeni 1 and Redi 1 in the scheme are instructions to the voice and power amplification module.
Preferably, the step of determining the output sound intensity value includes:
s410, the main control module receives the sound intensity Yj emitted by the environment noise detection module;
s411, the main control module calculates the transmission sound intensity Y according to the received sound intensity Yj;
s412, the main control module judges whether the output sound intensity Y is larger than the maximum sound intensity limit threshold Ymax; and judging whether the output sound intensity Y is smaller than a minimum sound intensity limit threshold Ymin;
s413, if the output sound intensity Y is larger than the maximum sound intensity limiting threshold Ymax, sending the maximum sound intensity limiting threshold Ymax to the voice and power amplification module; otherwise, sending the output sound intensity Y to the voice and power amplification module;
s415, if the output sound intensity Y is smaller than the minimum sound intensity limiting threshold Ymin, the minimum sound intensity limiting threshold Ymin is sent to the voice and power amplification module; otherwise, sending the output sound intensity Y to the voice and power amplification module;
by adopting the scheme, the main control module adjusts the output sound intensity Y in real time according to the sound intensity Yj received by the environment noise detection module, if the output sound intensity Y is larger than the maximum sound intensity limiting threshold Ymax in the parameter storage module, the maximum sound intensity limiting threshold Ymax is selected for playing, noise pollution is avoided, if the output sound intensity Y is smaller than the maximum small sound intensity limiting threshold Ymin in the parameter storage module, the minimum sound intensity limiting threshold min is selected for playing, and the situation that the played content enables waiting personnel to be unable to hear clearly is avoided.
When the intelligent traffic light and power amplifier is used, the parameter setting module sets different parameters in different environments, the parameter storage module stores the corresponding parameters, the main control module calls the parameters in the parameter storage module to perform corresponding processing and sends corresponding instructions to the voice and power amplifier module, and the voice and power amplifier module controls the volume and content of the loudspeaker to be played.
The above embodiments are merely illustrative of the preferred embodiments of the present invention, and not restrictive, and various changes and modifications to the technical solutions of the present invention may be made by those skilled in the art without departing from the spirit of the present invention, and the technical solutions of the present invention are intended to fall within the scope of the present invention defined by the appended claims.
Claims (9)
1. The utility model provides a sound suggestion device based on ambient noise automatically regulated volume which characterized in that: including ambient noise detection module, traffic lights state detection module, parameter setting module, parameter storage module, pronunciation and efficiency module and host system, wherein:
the environmental noise detection module is used for picking up noise decibels in real time and recording the noise decibels as Yn and calculating the sound intensity of environmental noise and recording the sound intensity as Yj;
a traffic light state detection module for detecting and picking up the voltage value of the traffic light circuit in real time and recording the voltage value as Vn, calculating the voltage value of the traffic light circuit and recording the voltage value as Vi,
the parameter setting module is used for setting a preset sound intensity increasing threshold Yu, a maximum sound intensity limiting threshold Ymax, a minimum sound intensity limiting threshold Ymin and a voltage threshold Vi, and the Vi range is V1-V2; wherein V1-is the upper limit value of the voltage threshold; v2-is the lower limit value of the voltage threshold;
the parameter storage module is used for storing all numerical values in the parameter setting module;
the voice and efficacy module is used for broadcasting the voice corresponding to the traffic light state through the voice and power amplification module and the loudspeaker according to the output sound intensity;
the main control module receives the data of the ambient noise detection module and the traffic light state detection module in real time, compares the data with a storage threshold value in the parameter storage module in real time and controls the voice and efficacy module to output;
the main control module obtains the current environment noise sound intensity Yj, adjusts the volume of the loudspeaker according to the sound intensity value by the sound intensity value corresponding to the query in the storage module and the voice and efficacy module, obtains the current traffic light circuit voltage value Vi, adjusts the playing content of the loudspeaker according to the voltage threshold Vi by the voice and efficacy module corresponding to the query in the storage module and the current traffic light circuit voltage value Vi; the main control module obtains the parameters set in the parameter setting module and stores the set parameters in the parameter storage module.
2. The audible prompting device for automatically adjusting volume based on ambient noise according to claim 1, wherein: the environment noise detection module comprises a noise pickup module and a sound intensity calculation module,
the noise pickup module picks and records the current environmental noise decibel in real time and records the current environmental noise decibel as Yn;
the sound intensity calculating module is used for calculating the sound intensity through a first calculating function of the sound intensityLine calculation, the sound intensity first calculation function is:
the N-sound intensity calculation module and the noise pickup module pick up Yn within a certain time period, wherein N is more than or equal to 3; yj-the overall average of Yn that is picked N times over a certain time period for the noise pickup module.
3. The audible prompting device for automatically adjusting volume based on ambient noise according to claim 1, wherein: the traffic light state detection module comprises a red light detection module and a green light detection module, wherein a voltage pickup module and a voltage calculation module are respectively arranged in the red light detection module and the green light detection module,
the voltage pickup module is used for acquiring a voltage value Vn on a traffic light line in a time period in real time;
the voltage calculation module calculates the voltage through a second calculation function, wherein the second calculation function is as follows:
the N-voltage calculation module picks up the recording times of Vn in a certain time period;
ti-is any percentage value of 1-99%, and the percentage value adopted by the invention is 70%;
vi-is the percentage value of the average of the N Vn times the voltage pickup module picks up over a certain time period.
4. The audible prompting device for automatically adjusting volume based on ambient noise according to claim 1, wherein: the master control module comprises an output sound intensity calculation module, and a third calculation function Y is set as Yj + Yu in the output sound intensity calculation module;
yj-is the average value of noise picked up by the environment noise detection module in a certain time period;
yu-is a preset sound intensity increase threshold value stored in the parameter storage module;
y-is the output sound intensity value.
5. The audible prompting device for automatically adjusting volume based on ambient noise according to claim 1, wherein: the traffic light state detection module and the environmental noise detection module are respectively provided with a time timing module, and the time timing module is used for setting a picking interval of the noise picking module and the voltage picking module in a certain time period.
6. The audible prompting device for automatically adjusting volume based on ambient noise according to claim 1, wherein: the main control module is also provided with a mode selection module, and the mode selection module is provided with a fixed mode and an adjusting mode; when the fixed mode acts on the parameter setting module, the volume output by the voice and efficacy module is the maximum sound intensity limit threshold Ymax or the minimum sound intensity limit threshold Ymin and is output; the adjusting mode is used for adjusting the volume output by the voice and efficacy module in real time according to the environmental noise.
7. An audible prompting control method for automatically adjusting volume based on ambient noise according to any one of claims 1-6, comprising the steps of:
s1, initializing, and reading various parameters in the parameter storage module by the main control module;
s2, detecting the parameters, detecting whether the parameter setting module sets new parameters, if the parameters are modified, using the new parameters, otherwise, using the parameters in the parameter storage module;
s3, detecting the state of the traffic lights and the sound intensity of environmental noise, and detecting the voltage percentage value V of the traffic light line in real time through a traffic light state module; detecting the noise in the surrounding environment in real time through the environmental noise sound intensity detection and calculating the sound intensity Yj;
s4, the main control module receives the voltage percentage value V in the S3, and the main control module judges the traffic light state according to the voltage percentage value V and sends a traffic light state instruction to the voice and power amplification module;
s5, the main control module receives the sound intensity Yj in the S3 and judges the working mode;
s6, if the working mode is the adjusting mode, the main control module sends the output sound intensity value Y to the voice and power amplification module;
s7, if the working mode is a fixed mode, the control module sends a traffic light state instruction and a maximum sound intensity limiting threshold value Ymax to the voice and power amplification module;
and S8, the voice and power amplifier module receives the instruction and controls the playing content and the playing volume of the loudspeaker.
8. The method of claim 7, wherein the volume of the audio signal is automatically adjusted based on ambient noise by: the traffic light state detection step is as follows:
s401, detecting a transmission voltage percentage value V to a main control module by traffic light state detection;
s402, judging whether the voltage percentage value received by the main control module belongs to a voltage threshold Vi in the parameter storage module;
s403, if the voltage percentage value V is within the voltage threshold value Vi, sending a command for opening the playing content to the voice and power amplifier module;
and S404, if the voltage percentage value V is not in the voltage threshold value Vi, sending a command of closing the playing content to the voice and power amplification module.
9. The method of claim 7, wherein the volume of the audio signal is automatically adjusted based on ambient noise by: the step of judging the output sound intensity value comprises the following steps:
s410, the main control module receives the sound intensity Yj emitted by the environment noise detection module;
s411, the main control module calculates the transmission sound intensity Y according to the received sound intensity Yj;
s412, the main control module judges whether the output sound intensity Y is larger than the maximum sound intensity limit threshold Ymax; judging whether the output sound intensity Y is smaller than a minimum sound intensity limiting threshold Ymin or not;
s413, if the output sound intensity Y is larger than the maximum sound intensity limiting threshold Ymax, sending the maximum sound intensity limiting threshold Ymax to the voice and power amplification module; otherwise, sending the output sound intensity Y to the voice and power amplification module;
s415, if the output sound intensity Y is smaller than the minimum sound intensity limiting threshold Ymin, the minimum sound intensity limiting threshold Ymin is sent to the voice and power amplification module; otherwise, the output sound intensity Y is sent to the voice and power amplification module.
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