A monitoring system based on sound decibels

Abstract

The present invention relates to a monitoring system based on sound decibels. The monitoring system comprises a camera, a controller and a plurality of sound decibel sensors; the plurality of sound decibel sensors are fixedly arranged at a set angle along the circumference of the camera; the controller is respectively connected to the camera and each of the sound decibel sensors; the sound decibel sensors are used to collect sound signals; the controller is used to control the rotation of the camera according to the sound signals collected by each of the sound decibel sensors; the controller is also used to control the camera to capture images at multiple focal lengths after the camera rotates. The monitoring system based on sound decibels provided by the present invention can improve the accuracy and timeliness of monitoring.

Description

Technical Field

[0001] The invention relates to the field of sound monitoring, and in particular to a monitoring system based on sound decibels. Background Art

[0002] With the development of electronic technology in the field of monitoring, the design direction of various products is developing towards the direction of intelligence. Most of the existing monitoring equipment only has conventional monitoring functions and can only use cameras for image monitoring and recording. When abnormal sounds occur in an unattended indoor environment, the location of the abnormality cannot be accurately and timely determined, and the indoor situation cannot be understood in time.

[0003] Therefore, a new monitoring system or method is urgently needed to solve the above problems. Summary of the invention

[0004] The purpose of the present invention is to provide a monitoring system based on sound decibels, which can improve the accuracy and timeliness of monitoring.

[0005] To achieve the above object, the present invention provides the following solutions:

[0006] A monitoring system based on sound decibels, comprising: a camera, a controller and a plurality of sound decibel sensors;

[0007] A plurality of the sound decibel sensors are fixedly arranged at a set angle along the circumference of the camera;

[0008] The controller is respectively connected to the camera and each of the sound decibel sensors;

[0009] The sound decibel sensor is used to collect sound signals;

[0010] The controller is used to determine the relative sound angle of the camera based on the sound signal collected by the sound decibel sensor, and control the rotation of the camera based on the relative sound angle of the camera; the controller is also used to control the camera to capture images at multiple focal lengths after the camera rotates.

[0011] Optionally, the controller includes a sound signal receiving module, a storage module, a judgment module and a control module;

[0012] The sound signal receiving module is connected to each of the sound decibel sensors; the sound signal receiving module is used to periodically receive the sound signal collected by each of the sound decibel sensors;

[0013] The judging module is connected to the sound signal receiving module and the storage module respectively; the judging module is used to judge whether the sound decibel value of the sound signal collected by the sound decibel sensor is within the sound decibel alarm range;

[0014] The control module is connected to the judgment module; the control module is used to control the rotation of the camera according to the relative sound angle of the camera when the sound decibel value of the sound signal collected by the sound decibel sensor is within the sound decibel alarm range, and control the camera to capture images at multiple focal lengths.

[0015] Optionally, the controller further includes: an alarm module;

[0016] The alarm module is connected to the control module;

[0017] The alarm module is used to give an alarm when the sound decibel value of the sound signal collected by the sound decibel sensor is within the sound decibel alarm range.

[0018] Optionally, the judgment module includes a first judgment unit, a second judgment unit and a third judgment unit;

[0019] The first judgment unit is connected to the sound signal receiving module, the control module and the storage module respectively; the control module is used to control the alarm module to issue an instant alarm when the sound decibel value of the sound signal collected by the sound decibel sensor is greater than the first sound decibel threshold;

[0020] The second judgment unit is connected to the sound signal receiving module, the control module and the storage module respectively; the control module is also used to control the alarm module to issue a short-delay alarm when the sound decibel value of the sound signal collected by the sound decibel sensor is greater than the second sound decibel threshold and less than or equal to the first sound decibel threshold;

[0021] The third judgment unit is connected to the sound signal receiving module, the control module and the storage module respectively; the control module is also used to control the alarm module to perform a long-delay alarm when the sound decibel value of the sound signal collected by the sound decibel sensor is greater than a third sound decibel threshold and less than or equal to a second sound decibel threshold; the sound decibel alarm range is the range between the third sound decibel threshold and the first sound decibel threshold.

[0022] Optionally, the model of the sound decibel sensor is FKT-ZY sound decibel sensor.

[0023] Optionally, the number of the sound decibel sensors is 6.

[0024] Optionally, the camera is a pan-tilt omnidirectional camera.

[0025] Optionally, the model of the pan-tilt omnidirectional camera is DS-2DC2402IW-D3.

[0026] According to the specific embodiments provided by the present invention, the present invention discloses the following technical effects:

[0027] The present invention provides a monitoring system based on sound decibels. A plurality of sound decibel sensors are fixedly arranged around a camera. That is, the sound around the camera is detected by the sound decibel sensors. The relative sound angle of the camera is determined based on the sound signals collected by the sound decibel sensors. The rotation of the camera is controlled according to the relative sound angle of the camera. The sound can be located quickly and accurately, and images can be captured quickly. Abnormal indoor sound conditions can be understood in real time through images. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0029] Figure 1 A structural schematic diagram of a sound decibel-based monitoring system provided by the present invention;

[0030] Figure 2 This is a schematic diagram of the principle of a sound decibel-based monitoring system provided by the present invention. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] The purpose of the present invention is to provide a monitoring system based on sound decibels, which can improve the accuracy and timeliness of monitoring.

[0033] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0034] Figure 1 A structural diagram of a sound decibel-based monitoring system provided by the present invention is shown in FIG. Figure 2 The principle diagram of a sound decibel monitoring system provided by the present invention is as follows Figure 1 and Figure 2As shown, a monitoring system based on sound decibels provided by the present invention comprises: a camera 2, a controller 3 and a plurality of sound decibel sensors 1. The camera 2 is a pan-tilt omnidirectional camera 2, and the model of the pan-tilt omnidirectional camera 2 is DS-2DC2402IW-D3; the model of the sound decibel sensor 1 is FKT-ZY sound decibel sensor 1, the measurement range is 35-100dB, the maximum error frequency is 0.5dB; the range is 20Hz-1.25kHz; the number of the sound decibel sensors 1 is 6.

[0035] The plurality of sound decibel sensors 1 are fixedly arranged along the circumference of the camera 2 at a set angle; further, when the number of the sound decibel sensors 1 is 6, the set angle is 60°.

[0036] The controller 3 is connected to the camera 2 and each of the sound decibel sensors 1 respectively.

[0037] The sound decibel sensor 1 is used to collect sound signals.

[0038] The controller 3 is used to determine the relative sound angle of the camera 2 according to the sound signal collected by the sound decibel sensor 1, and control the rotation of the camera 2 according to the relative sound angle of the camera 2; the controller 3 is also used to control the camera 2 to capture images at multiple focal lengths after the camera 2 rotates.

[0039] In order to understand the indoor scene situation in real time, snapshots of multiple focal lengths are pushed to the user end, so that timely responses can be made.

[0040] The controller 3 includes a sound signal receiving module, a storage module, a judgment module and a control module.

[0041] The sound signal receiving module is connected to each of the sound decibel sensors 1 ; the sound signal receiving module is used to periodically receive the sound signal collected by each of the sound decibel sensors 1 .

[0042] The judging module is connected to the sound signal receiving module and the storage module respectively; the judging module is used to judge whether the sound decibel value of the sound signal collected by the sound decibel sensor 1 is within the sound decibel alarm range.

[0043] The control module is connected to the judgment module; the control module is used to control the rotation of the camera 2 according to the relative sound angle of the camera when the sound decibel value of the sound signal collected by the sound decibel sensor 1 is within the sound decibel alarm range, and control the camera 2 to capture images at multiple focal lengths.

[0044] The controller 3 also includes: an alarm module.

[0045] The alarm module is connected to the control module.

[0046] The alarm module is used to give an alarm when the sound decibel value of the sound signal collected by the sound decibel sensor 1 is within the sound decibel alarm range.

[0047] The judgment module includes a first judgment unit, a second judgment unit and a third judgment unit;

[0048] The first judgment unit is connected to the sound signal receiving module, the control module and the storage module respectively; the control module is used to control the alarm module to issue an instant alarm when the sound decibel value of the sound signal collected by the sound decibel sensor 1 is greater than the first sound decibel threshold.

[0049] The second judgment unit is connected to the sound signal receiving module, the control module and the storage module respectively; the control module is also used to control the alarm module to issue a short-delay alarm when the sound decibel value of the sound signal collected by the sound decibel sensor 1 is greater than the second sound decibel threshold and less than or equal to the first sound decibel threshold.

[0050] The third judgment unit is connected to the sound signal receiving module, the control module and the storage module respectively; the control module is also used to control the alarm module to perform a long-delay alarm when the sound decibel value of the sound signal collected by the sound decibel sensor 1 is greater than the third sound decibel threshold and less than or equal to the second sound decibel threshold; the sound decibel alarm range is the range between the third sound decibel threshold and the first sound decibel threshold.

[0051] As a specific embodiment, the first sound decibel threshold F s =85dB (can be set according to actual situation); second sound decibel threshold F d =78dB (can be set according to actual situation); the third sound decibel threshold F c =70dB (can be set according to actual conditions).

[0052] The specific monitoring process of the sound decibel-based monitoring system provided by the present invention is as follows:

[0053] 1. Controller 3 collects the 6 sound decibel sensors 1 in real time (cycle 2s), and the collected value is Z 1 , Z 2 , Z 3 , Z 4 , Z 5 and Z 6 (i.e. 6 decibels of sound).

[0054] 2. If the decibel value of a sound is greater than the first sound decibel threshold F s , enter the instantaneous alarm mode As.

[0055] Instantaneous alarm mode As: Select Z 1 -Z 6 The maximum value in is Z x , and select two sound decibel values ​​Z connected to its position at the same time x-1 , Z x+1 .

[0056] Then proceed to step 5 to calculate the angle of camera 2 relative to the sound.

[0057] 3. If the decibel value of a sound is greater than the second sound decibel threshold F d , less than or equal to the first sound decibel threshold F s , enter the short delay alarm mode Ad.

[0058] Short-delay alarm mode Ad: The controller 3 accelerates the acquisition of the 6 sound decibel sensors 1 (cycle 0.5s), and continuously acquires 4 groups of sound decibel values. The 4 groups of sound decibel values ​​are averaged with the original group of sound decibel values ​​to obtain the average value Z 51 , Z 52 , Z 53 , Z 54 , Z 55 and Z 56 . Select Z 51 -Z 56 The maximum value in is Z x , if Z x Less than the short delay threshold F d , then exit the short-delay alarm mode and enter the normal mode. Otherwise, select the two sound decibel values ​​Z connected to its position x-1 , Z x+1 Then go to step 5 to calculate the angle of camera 2 relative to the sound.

[0059] If a certain sound decibel value is greater than the first sound decibel threshold Fs during the continuous acquisition process, the short-delay alarm mode is exited and the instantaneous alarm mode As is entered.

[0060] 4. If the decibel value of a sound is greater than the third sound decibel threshold F c And less than or equal to the second sound decibel threshold F d , enter the long delay alarm mode Ac.

[0061] Long-delay alarm mode Ac: Continuously collect 8 groups of sound decibel values. The 8 groups of sound decibel values ​​are averaged with the original group of sound decibel values ​​to obtain the average value Z 91 , Z 92, Z 93 , Z 94 , Z 95 , Z 96 . Select Z 91 -Z 96 The maximum value in is Z x , if Z x Less than the long delay threshold F d , then exit the long-delay alarm mode and enter the normal mode. Otherwise, select the two sound decibel values ​​Z connected to its position x-1 , Z x+1 Then go to step 5 to calculate the angle of camera 2 relative to the sound.

[0062] If a sound decibel value is greater than the first sound decibel threshold F during continuous acquisition, s , then exit the long delay alarm mode and enter the instantaneous alarm mode As.

[0063] 5. Compare Z x-1 , Z x+1 , if Z x-1 >Z x+1 , correction angle Otherwise, correct the angle Where K is the system correction parameter which is 3.28.

[0064] 6. Calculate the angle of camera 2 relative to the sound by the formula: a = (x*60°) + b.

[0065] 7. Controller 3 rotates camera 2 to the corresponding angle according to the relative sound angle a of camera 2, captures pictures, changes the focal length to capture pictures after close-up, remote picture alarm, remote message (sound decibel value Z x )Call the police.

[0066] 8. The controller 3 restores the focus of the camera 2, stops sending push notifications and alarms during the set do not disturb time, and stores the captured images and sound decibel values ​​for future reference. Then it enters the normal mode.

[0067] 9. The controller 3 saves the maximum value of the sound decibel value every 1 minute for query and drawing of a sound decibel value curve graph.

[0068] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0069] The principles and implementation methods of the present invention are described in this article using specific examples. The description of the above embodiments is only used to help understand the method and core idea of ​​the present invention. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A sound decibel-based monitoring system, characterized in that: include: Cameras, controllers, and multiple sound decibel sensors; A plurality of the sound decibel sensors are fixedly arranged at a set angle along the circumference of the camera; The controller is respectively connected to the camera and each of the sound decibel sensors; The sound decibel sensor is used to collect sound signals; The controller is used to determine the relative sound angle of the camera according to the sound signal collected by the sound decibel sensor, and control the rotation of the camera according to the relative sound angle of the camera; the controller is also used to control the camera to capture images at multiple focal lengths after the camera rotates; The controller includes a sound signal receiving module, a storage module, a judgment module and a control module; The sound signal receiving module is connected to each of the sound decibel sensors; the sound signal receiving module is used to periodically receive the sound signal collected by each of the sound decibel sensors; The judging module is connected to the sound signal receiving module and the storage module respectively; the judging module is used to judge whether the sound decibel value of the sound signal collected by the sound decibel sensor is within the sound decibel alarm range; The control module is connected to the judgment module; the control module is used to control the rotation of the camera according to the relative sound angle of the camera when the sound decibel value of the sound signal collected by the sound decibel sensor is within the sound decibel alarm range, and control the camera to capture images at multiple focal lengths; The controller further comprises: an alarm module; The alarm module is connected to the control module; The alarm module is used to sound an alarm when the sound decibel value of the sound signal collected by the sound decibel sensor is within the sound decibel alarm range; The judgment module includes a first judgment unit, a second judgment unit and a third judgment unit; The first judgment unit is connected to the sound signal receiving module, the control module and the storage module respectively; the control module is used to control the alarm module to issue an instant alarm when the sound decibel value of the sound signal collected by the sound decibel sensor is greater than the first sound decibel threshold; The second judgment unit is connected to the sound signal receiving module, the control module and the storage module respectively; the control module is also used to control the alarm module to issue a short-delay alarm when the sound decibel value of the sound signal collected by the sound decibel sensor is greater than the second sound decibel threshold and less than or equal to the first sound decibel threshold; The third judgment unit is connected to the sound signal receiving module, the control module and the storage module respectively; the control module is also used to control the alarm module to perform a long-delay alarm when the sound decibel value of the sound signal collected by the sound decibel sensor is greater than the third sound decibel threshold and less than or equal to the second sound decibel threshold; the sound decibel alarm range is the range between the third sound decibel threshold and the first sound decibel threshold; The monitoring process is as follows: The controller collects sound decibel values ​​from the six sound decibel sensors in real time, and the collected sound decibel values ​​are Z1, Z2, Z3, Z4, Z5 and Z6; If the decibel value of a sound is greater than the first decibel threshold F s , enter instantaneous alarm mode As; Instantaneous alarm mode As: select the maximum value among Z1-Z6 as Z x , and select two sound decibel values ​​Z connected to its position at the same time x-1 , Z x+1 ; Then calculate the camera's relative sound angle; If the decibel value of a sound is greater than the second decibel threshold F d , less than or equal to the first sound decibel threshold F s , enter the short-delay alarm mode Ad; short-delay alarm mode Ad: the controller accelerates the acquisition of 6 sound decibel sensors and continuously collects 4 groups of sound decibel values; the current 4 groups of sound decibel values ​​are averaged with the original group of sound decibel values ​​to obtain the average value Z 51 , Z 52 , Z 53 , Z 54 , Z 55 and Z 56 ; Select Z 51 -Z 56 The maximum value in is Z x , if Z x Less than the short delay threshold F d , then exit the short-delay alarm mode and enter the normal mode; otherwise, select the two sound decibel values ​​Z connected to its position x-1 , Z x+1 ; Then calculate the angle of the camera relative to the sound; If a certain sound decibel value is greater than the first sound decibel threshold Fs during the continuous acquisition process, the short-delay alarm mode is exited and the instantaneous alarm mode As is entered; If the decibel value of a sound is greater than the third sound decibel threshold F c And less than or equal to the second sound decibel threshold F d , enter the long-delay alarm mode Ac; long-delay alarm mode Ac: continuously collect 8 groups of sound decibel values; average the current 8 groups of sound decibel values ​​with the original group of sound decibel values ​​to obtain the average value Z 91 , Z 92 , Z 93 , Z 94 , Z 95 , Z 96 ; Select Z 91 -Z 96 The maximum value in is Z x , if Z x Less than the long delay threshold F d , then exit the long-delay alarm mode and enter the normal mode; otherwise, select the two sound decibel values ​​Z connected to its position x-1 , Z x+1 . Then calculate the angle of the camera relative to the sound; If a sound decibel value is greater than the first sound decibel threshold F during continuous acquisition, s , then exit the long-delay alarm mode and enter the instantaneous alarm mode As; Compare Z x-1 , Z x+1 , if Z x-1 >Z x+1 , correction angle Otherwise, correct the angle Where K is the system correction parameter which is 3.28; The formula for calculating the relative sound angle of the camera is: a = (x*60°) + b; The controller rotates the camera to the corresponding angle according to the relative sound angle, captures the picture, changes the focal length to a close-up view, and issues remote picture and message alarms. The controller restores the camera focus, stops sending push notifications and alarms during the set do not disturb time, stores the captured images and sound decibel values ​​for future reference, and then enters normal mode; The controller saves the maximum sound decibel value every 1 minute for query and drawing of sound decibel value curve graph.

2. A sound decibel-based monitoring system according to claim 1, characterized in that: The model of the sound decibel sensor is FKT-ZY sound decibel sensor.

3. A sound decibel-based monitoring system according to claim 1, characterized in that: The number of the sound decibel sensors is 6.

4. A sound decibel-based monitoring system according to claim 1, characterized in that: The camera is a pan-tilt omnidirectional camera.

5. A sound decibel-based monitoring system according to claim 4, characterized in that: The model of the pan-tilt omnidirectional camera is DS-2DC2402IW-D3.

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