Rechargeable outdoor Bluetooth sound equipment based on remote control

Abstract

The invention relates to the technical field of Bluetooth sound equipment, in particular to a rechargeable outdoor Bluetooth sound equipment based on remote control, which comprises a sound equipment main body, a dragging rod is fixedly connected to the rear surface of the sound equipment main body, moving wheels are symmetrically and rotationally connected to the interior of one end, close to the dragging rod, of the lower surface of the sound equipment main body, and a charging port is formed in one side of the sound equipment main body; preliminary remote control analysis is carried out from the angle of pairing, the pairing condition of the target sound equipment is known so as to control the target sound equipment, analysis is carried out from two points of control distance and control difficulty in an information feedback mode so as to ensure the continuous stability control effect of the target sound equipment, namely, analysis is carried out from the remote control distance, and the matching condition of the target sound equipment is known. And an operator of the control end is reminded to reasonably control the distance, and whether the disconnection risk exists in remote control of the target sound equipment is further analyzed from the perspective of interference control, so that the control distance is reasonably planned, the signal strength of the target sound equipment is ensured, and disconnection of the target sound equipment is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of Bluetooth speakers, and particularly to a rechargeable outdoor Bluetooth speaker based on remote control. Background Art

[0002] A Bluetooth speaker refers to a sound device with a built-in Bluetooth chip that replaces traditional wire connections with Bluetooth connections. By connecting to Bluetooth playback devices such as mobile phones, tablets, and laptops, it achieves the purpose of convenience and speed. Currently, outdoor sports are on the rise, and many outdoor speakers are chosen by people during outdoor activities due to their small size, powerful functions, and low power consumption.

[0003] However, in the prior art, it is impossible to conduct safety supervision on the connection and pairing of Bluetooth speakers, which in turn leads to a reduction in the control effect of Bluetooth speakers, making it difficult to analyze the remote control risks of Bluetooth speakers, not conducive to the rational planning of the control distance of Bluetooth speakers, and also unable to carry out reasonable control and management based on the control difficulty of Bluetooth speakers to ensure the continuous and stable control of Bluetooth speakers. Therefore, a solution is proposed herein. Summary of the Invention

[0004] The purpose of the present invention is to provide a rechargeable outdoor Bluetooth speaker based on remote control to solve the above-mentioned technical defects.

[0005] The purpose of the present invention can be achieved through the following technical solutions: A rechargeable outdoor Bluetooth speaker based on remote control includes a speaker main body. A dragging rod is fixedly connected to the rear surface of the speaker main body. A pair of moving wheels are symmetrically and rotatably connected to the inside of one end of the lower surface of the speaker main body near the dragging rod. A charging port is provided on one side of the speaker main body. A positioning backing plate is fixedly connected to the end of the lower surface of the speaker main body away from the moving wheels.

[0006] A remote control box is arranged inside the speaker main body. A pairing management module, a remote control evaluation module, a progressive analysis module, a remote control difficulty analysis module, a playback supervision module, and an intelligent management module are arranged inside the remote control box.

[0007] Preferably, the pairing management module is used to collect the pairing status information of the control end and the target speaker, and perform a pairing control status analysis on the pairing status information to obtain a control signal or an unauthorized signal.

[0008] When a control signal is generated, the remote control evaluation module is used to perform a remote control disconnection risk analysis on the straight-line distance between the collected control end and the target speaker to obtain a feedback signal or a disconnection warning signal. When a feedback signal is generated, the progressive analysis module is used to perform a control risk quantification and division analysis on the control interference information within the collected control area to obtain a remote control risk level YK.

[0009] When generating a control signal, the remote control difficulty analysis module is used to conduct a quantitative analysis of the control difficulty assessment on the parameter information of the collected target audio, obtaining a control difficulty assessment coefficient N. The playback supervision module is used to conduct a safety playback supervision feedback analysis on the control feature information of the collected target audio, obtaining a playback control assessment coefficient. By comparing and analyzing the control difficulty assessment coefficient N and the playback control assessment coefficient, a continuous control signal or a control risk signal is obtained.

[0010] Preferably, the paired control state analysis process is as follows:

[0011] Set the audio main body as the target audio, obtain the pairing state information between the control end and the target audio. The pairing state information includes pairing success and pairing failure. After discriminant processing of the pairing state information: if the pairing state information between the control end and the target audio is pairing success, generate a control signal; if the pairing state information between the control end and the target audio is pairing failure, generate an unauthorized signal.

[0012] Preferably, the remote control disconnection risk analysis process is as follows:

[0013] Collect the connection control period of the target audio and set it as the time threshold. Obtain the straight-line distance between the control end and the target audio within the time threshold, and at the same time obtain the standard basic information between the control end and the target audio within the time threshold. The standard basic information represents the farthest straight-line control distance set for the target audio. Compare and analyze the straight-line distance with the standard basic information to obtain a feedback signal or a disconnection warning signal.

[0014] Preferably, the control risk quantitative division analysis process is as follows:

[0015] Taking the target audio as the center and the straight-line distance as the radius, set the area obtained by drawing a circle around the center as the control area. Obtain the control interference information within the control area within the time threshold. The control interference information includes a physical interference index and a non-physical interference value;

[0016] Compare and analyze the physical interference index and the non-physical interference value with the preset physical interference index threshold and the preset non-physical interference value threshold. Set the number of the physical interference index and the non-physical interference value that is greater than or equal to the preset physical interference index threshold and the preset non-physical interference value threshold as the control risk coefficient, and conduct discriminant processing on the control risk coefficient to obtain a first-level remote control signal, a second-level remote control signal, and a third-level remote control signal. Set the first-level remote control signal, the second-level remote control signal, and the third-level remote control signal as the remote control risk level YK, where YK = 1, 2, 3.

[0017] Preferably, the control difficulty assessment quantitative analysis process is as follows:

[0018] Obtain the parameter information of the target audio within the time threshold. The parameter information includes energy consumption and operating temperature. Obtain the number of corresponding values of the parameter information that exceed the preset threshold, and set the number of corresponding values of the parameter information that exceed the preset threshold as the playback evaluation index;

[0019] Obtain the response evaluation value of the target audio within the time threshold. The response evaluation value represents the proportion of the number of normal responses of the target audio in the total number of commands sent by the target audio;

[0020] Obtain the playback evaluation index and the response evaluation value of the target audio. Label the playback evaluation index and the response evaluation value as BC and XC respectively. Substitute the playback evaluation index BC and the response evaluation value XC into the formula N = [BC × a1 ÷ (XC × a2)] × a3 to obtain the control difficulty evaluation coefficient, where a1 and a2 are the preset weight factor coefficients of the playback evaluation index BC and the response evaluation value XC respectively, a3 is the preset error correction factor, a1, a2, and a3 are all greater than zero, and N is the control difficulty evaluation coefficient.

[0021] Preferably, the process of safety playback supervision and feedback analysis is as follows:

[0022] Obtain the number of times of playback jams and the total jam duration of the target audio within the time threshold, and set the product value obtained by multiplying the corresponding values of the number of times of playback jams and the total jam duration as the playback performance coefficient;

[0023] Obtain the control feature information of the target audio within the time threshold. The control feature information includes volume up, volume down, and next track. Set the parameter in the control feature information as g, where g is a natural number greater than zero. Obtain the number of corresponding cases where the actual operation of the parameter in the control feature information is inconsistent with the set operation, and set it as the control deviation value plus;

[0024] Compare and analyze the playback performance coefficient and the control deviation value with the preset playback performance coefficient threshold and the preset control deviation value threshold, and set the number of the playback performance coefficient and the control deviation value that are greater than or equal to the preset playback performance coefficient threshold and the preset control deviation value threshold as the playback control evaluation coefficient.

[0025] The beneficial effects of the present invention are as follows:

[0026] (1) The present invention conducts a preliminary remote control analysis from the perspective of pairing to understand the pairing situation of the target audio device in order to achieve control over the target audio device. Through information feedback, it analyzes from two aspects: control distance and control difficulty, to ensure the continuous stability of the control effect of the target audio device. That is, it analyzes from the remote control distance to remind the operator at the control end to reasonably control the distance. Further, it analyzes from the perspective of control interference whether there is a risk of disconnection in the remote control of the target audio device, so as to reasonably plan the control distance, ensure the signal strength of the target audio device, and avoid disconnection of the target audio device.

[0027] (2) The present invention also conducts a comprehensive analysis from two aspects: the state performance and playback regulation performance of the target audio device in terms of control difficulty. On the one hand, it helps to improve the operation control and supervision efficiency of the target audio device, facilitating timely targeted management of the target audio device. On the other hand, it helps to improve the continuous stability control effect of the target audio device. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The present invention will be further described below in conjunction with the accompanying drawings;

[0029] Figure 1 is a three-dimensional structure diagram of the present invention;

[0030] Figure 2 is a front view of the structure of the present invention;

[0031] Figure 3 is a side view of the structure of the present invention;

[0032] Figure 4 is a system flowchart of the present invention.

[0033] Legend: 1. Audio main body; 2. Drag rod; 3. Moving wheel; 4. Charging port; 5. Positioning pad. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0034] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0035] Embodiment 1: Please refer to Figures 1 to 2As shown in the figure, the present invention is a rechargeable outdoor Bluetooth speaker based on remote control, including a speaker main body 1. A dragging rod 2 is fixedly connected to the rear surface of the speaker main body 1. A moving wheel 3 is symmetrically and rotatably connected to the inside of one end of the lower surface of the speaker main body 1 close to the dragging rod 2. A charging port 4 is provided on one side of the speaker main body 1. A positioning backing plate 5 is fixedly connected to one end of the lower surface of the speaker main body 1 away from the moving wheel 3. Among them, the movement of the speaker main body 1 is realized through the dragging rod 2, and other electrical devices can be charged through the charging port 4 to achieve the charging effect;

[0036] A remote control box is arranged inside the speaker main body 1. Inside the remote control box, there are a pairing management module, a remote control evaluation module, a progressive analysis module, a remote control difficulty analysis module, a playback supervision module, and an intelligent management module;

[0037] The pairing management module is used to collect the pairing status information of the control end and the target speaker, and perform pairing control status analysis on the pairing status information to understand the pairing situation of the target speaker, so as to realize the control of the target speaker. The specific pairing control status analysis process is as follows:

[0038] Set the speaker main body 1 as the target speaker, obtain the pairing status information of the control end and the target speaker. The pairing status information includes pairing success and pairing failure. After discriminant processing of the pairing status information:

[0039] If the pairing status information of the control end and the target speaker is pairing success, a control signal is generated;

[0040] If the pairing status information of the control end and the target speaker is pairing failure, an unauthorized signal is generated. After the unauthorized signal is generated, the target speaker is immediately paired again;

[0041] When the control signal is generated, the remote control evaluation module is used to respond to the control signal, collect the straight-line distance between the control end and the target speaker, and perform remote control disconnection risk analysis on the straight-line distance. The specific remote control disconnection risk analysis process is as follows:

[0042] Collect the connection control period of the target speaker and set it as the time threshold. Obtain the straight-line distance between the control end and the target speaker within the time threshold, and at the same time obtain the standard basic information between the control end and the target speaker within the time threshold. The standard basic information represents the farthest straight-line control distance set by the target speaker. Compare and analyze the straight-line distance with the standard basic information:

[0043] If the straight-line distance is less than the standard basic information, a feedback signal is generated;

[0044] If the linear distance is greater than or equal to the standard basic information, a disconnection warning signal is generated and sent to the intelligent management module. After receiving the disconnection warning signal, the intelligent management module immediately performs the preset warning operation corresponding to the disconnection warning signal to remind the operator at the control end to reasonably control the distance to ensure the stability and smoothness of the target audio control;

[0045] When a feedback signal is generated, the progressive analysis module is used to respond to the feedback signal, collect the control interference information in the control area, and perform a control risk quantification and division analysis on the control interference information, so as to further analyze whether there is a disconnection risk in the remote control of the target audio from the perspective of control interference. The specific control risk quantification and division analysis process is as follows:

[0046] Taking the target audio as the center and the linear distance as the radius, the area obtained by drawing a circle around the center is set as the control area, and the control interference information within the control area within the time threshold is obtained. The control interference information includes the physical interference index and the non-physical interference value;

[0047] The total number corresponding to the physical interference information existing in the control area is obtained and set as the physical interference index. The physical interference information includes display screens, metal doors and windows, etc.;

[0048] The sum value between the total number of co-frequency signal sources in the control area and the number corresponding to the environmental interference information exceeding the preset threshold after data normalization processing is obtained. The environmental interference information includes temperature, electromagnetic intensity, etc.;

[0049] The physical interference index and the non-physical interference value are compared and analyzed with the preset physical interference index threshold and the preset non-physical interference value threshold. The number corresponding to the physical interference index and the non-physical interference value that is greater than or equal to the preset physical interference index threshold and the preset non-physical interference value threshold is set as the control risk coefficient, and the control risk coefficient is judged and processed:

[0050] If the control risk coefficient = 0, a first-level remote control signal is generated;

[0051] If the control risk coefficient = 1, a second-level remote control signal is generated;

[0052] If the control risk coefficient = 2, a third-level remote control signal is generated. Among them, the remote abnormal risks corresponding to the first-level remote control signal, the second-level remote control signal, and the third-level remote control signal increase in turn. The first-level remote control signal, the second-level remote control signal, and the third-level remote control signal are set as the remote control risk level YK, where YK = 1, 2, 3. That is, when the remote control risk level YK = 1, it represents the first-level remote control signal; when the remote control risk level YK = 2, it represents the second-level remote control signal; when the remote control risk level YK = 3, it represents the third-level remote control signal. The remote control risk level YK is sent to the intelligent management module. After receiving the remote control risk level YK, the intelligent management module immediately performs the preset warning operation corresponding to the remote control risk level YK to remind the control end to select a reasonable position according to the remote control risk level YK of the current target sound to ensure the signal strength of the target sound and avoid disconnection of the target sound.

[0053] Embodiment 2: When a control signal is generated, the remote control difficulty analysis module is used to respond to the control signal, collect the parameter information of the target sound, and at the same time perform a quantitative analysis of the control difficulty evaluation on the parameter information, that is, analyze from two perspectives of parameters and responses to understand the current remote control difficulty of the target sound. The specific process of the control difficulty evaluation and quantification analysis is as follows:

[0054] Obtain the parameter information of the target sound within the time threshold. The parameter information includes energy consumption, operating temperature, etc. Obtain the number of parameter information corresponding values that exceed the preset threshold, and set the number of parameter information corresponding values that exceed the preset threshold as the playback evaluation index. It should be noted that the larger the value of the playback evaluation index, the greater the normal control risk of the target sound;

[0055] Obtain the response evaluation value of the target sound within the time threshold. The response evaluation value represents the ratio of the number of normal responses of the target sound to the total number of commands sent by the target sound. It should be noted that the response evaluation value is an influence parameter reflecting the control stability of the target sound;

[0056] Obtain the playback evaluation index and the response evaluation value of the target sound. Label the playback evaluation index and the response evaluation value as BC and XC respectively. Substitute the playback evaluation index BC and the response evaluation value XC into the formula N = [BC × a1 ÷ (XC × a2)] × a3 to obtain the control difficulty evaluation coefficient, where a1 and a2 are the preset weight factor coefficients of the playback evaluation index BC and the response evaluation value XC respectively, a3 is the preset error correction factor, a1, a2, and a3 are all greater than zero, and N is the control difficulty evaluation coefficient;

[0057] When generating a control signal, the playback supervision module is used to respond to the control signal, collect the control feature information of the target audio, and simultaneously perform a security playback supervision feedback analysis on the control feature information, that is, perform a control risk analysis from the perspective of current playback and regulation to understand the control accuracy risk of the target audio. The specific process of the security playback supervision feedback analysis is as follows:

[0058] Obtain the number of times of playback stuttering and the total stuttering duration of the target audio within the time threshold, and set the product value obtained by multiplying the values corresponding to the number of times of playback stuttering and the total stuttering duration as the playback performance coefficient. It should be noted that the playback performance coefficient is an influence parameter reflecting the control stability of the target audio;

[0059] Obtain the control feature information of the target audio within the time threshold. The control feature information includes volume up, volume down, next song, etc. Set the parameter in the control feature information as g, where g is a natural number greater than zero. Obtain the number corresponding to the inconsistency between the actual operation and the set operation of the parameter in the control feature information, and set it as the control deviation value. It should be noted that the larger the value of the control deviation value, the greater the risk of precise control of the target audio. Among them, the actual operation is inconsistent with the set operation. For example, the actual operation is volume up, but the set operation does not respond to volume up;

[0060] In the embodiment of the present invention, when g = 1, it means volume up; when g = 2, it means volume down; when g = 3, it means next song, and so on;

[0061] Compare and analyze the playback performance coefficient and the control deviation value with the preset playback performance coefficient threshold and the preset control deviation value threshold, and set the number of the playback performance coefficient and the control deviation value that are greater than or equal to the preset playback performance coefficient threshold and the preset control deviation value threshold as the playback control evaluation coefficient;

[0062] Compare and analyze the control difficulty evaluation coefficient N and the playback control evaluation coefficient with the preset control difficulty evaluation coefficient threshold preset and the playback control evaluation coefficient threshold:

[0063] If the control difficulty evaluation coefficient N is less than the preset control difficulty evaluation coefficient threshold and the playback control evaluation coefficient = 0, then generate a continuous control signal;

[0064] If the control difficulty evaluation coefficient N is greater than or equal to the preset control difficulty evaluation coefficient threshold, or the playback control evaluation coefficient ≠ 0, a control risk signal is generated, and the continuous control signal or the control risk signal is sent to the intelligent management module. After receiving the continuous control signal or the control risk signal, the intelligent management module immediately performs the preset warning operation corresponding to the continuous control signal or the control risk signal to rationally manage the target audio. On the one hand, it helps to improve the operation and playback supervision efficiency of the target audio, facilitating timely targeted management of the target audio. On the other hand, it helps to improve the continuous stability control effect of the target audio;

[0065] In summary, from the perspective of pairing, a preliminary remote control analysis is carried out to understand the pairing situation of the target audio in order to achieve control of the target audio. Information feedback is also used to analyze from two aspects: control distance and control difficulty to ensure the continuous stability control effect of the target audio. That is, analyze from the remote control distance to remind the operator at the control end to reasonably control the distance. Further analyze from the perspective of control interference whether there is a disconnection risk in the remote control of the target audio in order to reasonably plan the control distance, ensure the signal strength of the target audio, and avoid disconnection of the target audio;

[0066] Comprehensively analyze from two aspects: the state performance and playback regulation performance of the target audio in terms of control difficulty. On the one hand, it helps to improve the operation control supervision efficiency of the target audio, facilitating timely targeted management of the target audio. On the other hand, it helps to improve the continuous stability control effect of the target audio.

[0067] The setting of the threshold value is for the convenience of comparison. Regarding the size of the threshold value, it depends on the amount of sample data and the number of base values set by those skilled in the art for each group of sample data; as long as it does not affect the proportional relationship between the parameter and the quantified value.

[0068] The size of the coefficient is a specific value obtained by quantifying each parameter for subsequent comparison. Regarding the size of the coefficient, it depends on the amount of sample data and the corresponding operation coefficients initially set by those skilled in the art for each group of sample data; as long as it does not affect the proportional relationship between the parameter and the quantified value.

[0069] The above formulas are all obtained by collecting a large amount of data for software simulation and selecting a formula close to the true value. The coefficients in the formulas are set by those skilled in the art according to the actual situation. The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A rechargeable outdoor Bluetooth speaker based on remote control, comprising a speaker body (1), characterized in that, A dragging rod (2) is fixedly connected to the rear surface of the sound box body (1). Symmetrically rotatably connected to the inside of one end of the lower surface of the sound box body (1) near the dragging rod (2) are moving wheels (3). A charging port (4) is provided on one side of the sound box body (1). A positioning backing plate (5) is fixedly connected to the end of the lower surface of the sound box body (1) away from the moving wheels (3). A remote control box is provided inside the sound box body (1). Inside the remote control box, there are a pairing management module, a remote control evaluation module, a progressive analysis module, a remote control difficulty analysis module, a playback supervision module, and an intelligent management module.

2. The rechargeable outdoor Bluetooth speaker based on remote control according to claim 1, wherein The pairing management module is used to collect the pairing status information of the control end and the target sound box, and perform a pairing control status analysis on the pairing status information to obtain a control signal or an unauthorized signal. When a control signal is generated, the remote control evaluation module is used to perform a remote control disconnection risk analysis on the straight-line distance between the collected control end and the target sound box to obtain a feedback signal or a disconnection warning signal. When a feedback signal is generated, the progressive analysis module is used to perform a control risk quantification and classification analysis on the control interference information within the collected control area to obtain a remote control risk level YK. When a control signal is generated, the remote control difficulty analysis module is used to perform a control difficulty evaluation and quantification analysis on the parameter information of the collected target sound box to obtain a control difficulty evaluation coefficient N. The playback supervision module is used to perform a safe playback supervision feedback analysis on the control characteristic information of the collected target sound box to obtain a playback control evaluation coefficient. By comparing and analyzing the control difficulty evaluation coefficient N and the playback control evaluation coefficient, a continuous control signal or a control risk signal is obtained.

3. The rechargeable outdoor Bluetooth speaker based on remote control according to claim 2, wherein, The process of the pairing control status analysis is as follows: Set the sound box body (1) as the target sound box, obtain the pairing status information of the control end and the target sound box. The pairing status information includes pairing success and pairing failure. After discriminant processing of the pairing status information: If the pairing status information of the control end and the target sound box is pairing success, a control signal is generated; if the pairing status information of the control end and the target sound box is pairing failure, an unauthorized signal is generated.

4. The rechargeable outdoor Bluetooth speaker based on remote control according to claim 2, wherein The process of the remote control disconnection risk analysis is as follows: Collect the connection control period of the target sound box and set it as the time threshold. Obtain the straight-line distance between the control end and the target sound box within the time threshold, and at the same time obtain the standard basic information between the control end and the target sound box within the time threshold. The standard basic information represents the farthest straight-line control distance set for the target sound box. Compare and analyze the straight-line distance with the standard basic information to obtain a feedback signal or a disconnection warning signal.

5. The rechargeable outdoor Bluetooth speaker based on remote control according to claim 2, wherein The process of the control risk quantification and classification analysis is as follows: Taking the target sound box as the center and the straight-line distance as the radius, set the area obtained by drawing a circle around the center as the control area. Obtain the control interference information within the control area within the time threshold. The control interference information includes a physical interference index and a non-physical interference value. Compare and analyze the physical interference index and the non-physical interference value with the preset physical interference index threshold and the preset non-physical interference value threshold. Set the number of the physical interference index and the non-physical interference value that are greater than or equal to the preset physical interference index threshold and the preset non-physical interference value threshold as the control risk coefficient, and perform discriminant processing on the control risk coefficient to obtain the first-level remote control signal, the second-level remote control signal, and the third-level remote control signal. Set the first-level remote control signal, the second-level remote control signal, and the third-level remote control signal as the remote control risk level YK, where YK = 1, 2, 3.

6. The rechargeable outdoor Bluetooth speaker based on remote control according to claim 2, wherein, The process of quantitative analysis of the control difficulty assessment is as follows: Obtain the parameter information of the target sound system within the time threshold. The parameter information includes energy consumption and operating temperature. Obtain the number of corresponding values of the parameter information that exceed the preset threshold, and set the number of corresponding values of the parameter information that exceed the preset threshold as the playback assessment index. Obtain the response assessment value of the target sound system within the time threshold. The response assessment value represents the proportion of the number of normal responses of the target sound system in the total number of commands sent by the target sound system. Obtain the playback assessment index and the response assessment value of the target sound system. Label the playback assessment index and the response assessment value as BC and XC respectively. Substitute the playback assessment index BC and the response assessment value XC into the formula N = [BC × a1 ÷ (XC × a2)] × a3 to obtain the control difficulty assessment coefficient, where a1 and a2 are the preset weight factor coefficients of the playback assessment index BC and the response assessment value XC respectively, a3 is the preset error correction factor, a1, a2, and a3 are all greater than zero, and N is the control difficulty assessment coefficient.

7. The rechargeable outdoor Bluetooth speaker based on remote control according to claim 2, wherein The process of safety playback supervision feedback analysis is as follows: Obtain the number of times of playback jams and the total jam duration of the target sound system within the time threshold, and set the product value obtained by multiplying the corresponding values of the number of times of playback jams and the total jam duration as the playback performance coefficient. Obtain the control characteristic information of the target sound system within the time threshold. The control characteristic information includes volume up, volume down, and next song. Set the parameter in the control characteristic information as g, where g is a natural number greater than zero. Obtain the number of inconsistencies between the actual operation and the set operation of the parameter in the control characteristic information, and set it as the control deviation value plus. Compare and analyze the playback performance coefficient and the control deviation value with the preset playback performance coefficient threshold and the preset control deviation value threshold. Set the number of the playback performance coefficient and the control deviation value that are greater than or equal to the preset playback performance coefficient threshold and the preset control deviation value threshold as the playback control assessment coefficient.

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