CN113721196A - Gunshot positioning method and system - Google Patents
Gunshot positioning method and system Download PDFInfo
- Publication number
- CN113721196A CN113721196A CN202111019679.5A CN202111019679A CN113721196A CN 113721196 A CN113721196 A CN 113721196A CN 202111019679 A CN202111019679 A CN 202111019679A CN 113721196 A CN113721196 A CN 113721196A
- Authority
- CN
- China
- Prior art keywords
- gunshot
- microphones
- source position
- sound source
- sound
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 27
- 238000012544 monitoring process Methods 0.000 claims abstract description 25
- 238000005516 engineering process Methods 0.000 claims abstract description 12
- 238000012163 sequencing technique Methods 0.000 claims description 8
- 230000005540 biological transmission Effects 0.000 abstract 1
- 238000004364 calculation method Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000004134 energy conservation Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
- G01S5/18—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations using ultrasonic, sonic, or infrasonic waves
- G01S5/22—Position of source determined by co-ordinating a plurality of position lines defined by path-difference measurements
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Burglar Alarm Systems (AREA)
- Emergency Alarm Devices (AREA)
Abstract
The invention relates to a gunshot positioning method and a positioning system thereof, comprising the following steps: arranging a plurality of acquisition devices in a monitoring area at intervals, and acquiring surrounding sounds in real time through the acquisition devices to form corresponding audio data; identifying whether the collected audio data contains a gunshot or not; if the collected audio data contains the gunshot, acquiring the gunshot identification moment; calculating the sound source position of the gunshot by using a TDOA (time difference of arrival) positioning algorithm technology according to the position of the collection equipment for recognizing the gunshot and the gunshot recognition time; and sending reminding information comprising the sound source position of the gunshot. The invention realizes the real-time monitoring of the gunshot in the monitoring area, the sound source position of the gunshot calculated by utilizing the gunshot transmission time is more accurate, and the success rate of the stealing, hunting and pursuing is improved.
Description
Technical Field
The invention relates to the technical field of sound source positioning, in particular to a gunshot positioning method and a gunshot positioning system.
Background
The phenomenon of stealing hunting and stealing by holding a gun still exists in more than 4000 protection areas in China, because the protection areas have larger areas, the position of the gunshot is judged artificially, the error is larger, the specific position of a hunter cannot be accurately judged, and the failure of stealing hunting and hunting is caused.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a gunshot positioning method and a gunshot positioning system to solve the problem that the specific position of a stolen hunter cannot be accurately judged by manual judgment in the prior art.
In order to achieve the above object, the present invention provides a gunshot positioning method, comprising the steps of:
providing acquisition equipment, arranging a plurality of acquisition equipment in a monitoring area at intervals, and acquiring surrounding sound in real time through the acquisition equipment to form corresponding audio data;
identifying whether the collected audio data contains a gunshot or not;
if the collected audio data contains the gunshot, acquiring the gunshot identification moment;
calculating the sound source position of the gunshot by using a TDOA (time difference of arrival) positioning algorithm technology according to the position of the collection equipment for recognizing the gunshot and the gunshot recognition time;
and sending reminding information comprising the sound source position of the gunshot.
The invention arranges a plurality of acquisition devices in the monitoring area to ensure that the acquisition range of all the acquisition devices covers the whole monitoring area, the method comprises the steps of collecting surrounding sounds in real time through a collecting device, forming audio data, identifying whether the collected audio data contains a gunshot or not, acquiring the gunshot identification time if the gunshot is identified, calculating the sound source position of the gunshot by using a TDOA (time difference of arrival) positioning algorithm technology according to the position of the collection equipment for recognizing the gunshot and the gunshot recognition time, sending reminding information of the sound source position of the gunshot, so as to rapidly and accurately provide the reminding information of the sound source position of the gunshot for the staff in the protected area, therefore, the method is convenient for the staff to quickly take pursuit actions, improves the success rate of stealing, hunting and pursuing, and avoids the problems of time and labor waste and easy error of manual monitoring by intelligently monitoring the gunshot in the monitoring area in real time.
A further improvement of the gunshot positioning method of the present invention is that,
the provided acquisition equipment comprises four microphones distributed in an array;
and when calculating the sound source position of the gunshot, calculating the sound source position of the gunshot according to the positions of the four microphones and the gunshot recognition time.
The invention further improves the gunshot positioning method, which also comprises the following steps:
judging whether the calculated sound source position of each gunshot is within a set range;
and selecting a sound source position of a gunshot from the same set range to send reminding information.
A further improvement of the gunshot positioning method of the present invention is that,
the provided acquisition device comprises a microphone;
when the sound source position of the gunshot is calculated, the microphones with the gunshot recognized are sequenced according to the sequence of the gunshot recognized;
and selecting the positions of the first three microphones and the gun sound identification time to calculate the sound source position of the gun sound.
The invention further improves the gunshot positioning method, which also comprises the following steps:
judging whether the first three selected microphones are positioned in a set area or not;
if the microphones are judged not to be in the set area, the gun sound identified by the microphones not in the set area is determined as new gun sound, the microphones which are positioned at the front of the gun sound identification time are selected at the periphery of the microphones not in the set area, the sound source position of the new gun sound is calculated, and the microphones which are positioned at the front of the gun sound identification time are selected at the periphery of the microphones in the set area, and the sound source position of the gun sound is calculated.
The invention also provides a gunshot positioning system, comprising:
a collection device for collecting ambient sound to form corresponding audio data;
the gunshot recognition unit is connected with the acquisition equipment and used for recognizing whether the acquired audio data contains the gunshot or not, and if the acquired audio data contains the gunshot, acquiring a gunshot recognition moment;
the gunshot processing unit is connected with the gunshot recognition unit and is used for calculating the sound source position of the gunshot by using a TDOA (time difference of arrival) positioning algorithm technology according to the position of the collection equipment for recognizing the gunshot and the gunshot recognition time;
and the alarm notification unit is connected with the gunshot processing unit and is used for sending reminding information containing the sound source position of the gunshot.
The gunshot positioning system is further improved in that the acquisition equipment comprises four microphones distributed in an array;
when calculating the sound source position of the gunshot, the gunshot processing unit is further used for calculating the sound source position of the gunshot according to the positions of the four microphones and the gunshot recognition time.
A further improvement of the present gunshot positioning system is that,
the gunshot processing unit is also used for judging whether the calculated sound source position of each gunshot is positioned in a set range; and selecting a sound source position of a gunshot from the same set range and sending the sound source position to the alarm notification unit.
A further improvement of the present gunshot positioning system is that,
the acquisition device comprises a microphone;
when the sound source position of the gunshot is calculated, the gunshot processing unit is further used for sequencing the microphones with the gunshot recognized according to the sequence of the gunshot recognized; and selecting the positions of the first three microphones and the gun sound identification time to calculate the sound source position of the gun sound.
A further improvement of the present gunshot positioning system is that,
the gunshot processing unit is also used for judging whether the first three selected microphones are positioned in a set area; if the microphones are judged not to be in the set area, the gun sound identified by the microphones not in the set area is determined as new gun sound, the microphones which are positioned at the front of the gun sound identification time are selected at the periphery of the microphones not in the set area, the sound source position of the new gun sound is calculated, and the microphones which are positioned at the front of the gun sound identification time are selected at the periphery of the microphones in the set area, and the sound source position of the gun sound is calculated.
Drawings
Fig. 1 is a flow chart of the gunshot positioning method of the present invention.
Fig. 2 is a logic block diagram of the gunshot positioning system of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention provides a gunshot positioning method and a gunshot positioning system, which are used for monitoring the gunshot and outputting the sound source position of the gunshot. The system comprises acquisition equipment, a gunshot processing unit, a position calculating unit and an alarm notifying unit, wherein whether the gunshot occurs or not is monitored by acquiring surrounding audio data, and if the gunshot occurs, the gunshot recognition time is further acquired and recognized, and the sound source position of the gunshot is calculated, so that the gunshot in a monitored area is monitored in real time all day long, and the success rate of stealing, hunting and pursuing is improved.
The gunshot positioning method and the gunshot positioning system of the invention are explained below with reference to the accompanying drawings.
Referring to fig. 2, in the present embodiment, a gunshot positioning system includes: the system comprises acquisition equipment, a gunshot recognition unit connected with the acquisition equipment, a gunshot processing unit connected with the gunshot recognition unit, and an alarm notification unit connected with the gunshot processing unit, wherein the acquisition equipment is used for acquiring surrounding sounds to form corresponding audio data; the gunshot recognition unit is used for recognizing whether the acquired audio data contains the gunshot or not, and acquiring the gunshot recognition moment if the acquired audio data contains the gunshot; the gunshot processing unit is used for calculating the sound source position of the gunshot by using a TDOA (time difference of arrival) positioning algorithm technology according to the position of the collection equipment for recognizing the gunshot and the gunshot recognition time; the alarm notification unit is used for sending reminding information containing the sound source position of the gunshot.
In the embodiment, the gun sound positioning system is provided with the plurality of acquisition devices at intervals in the monitoring area to cover the whole monitoring area, and the alarm information containing the gun sound position is sent after the gun sound is detected, so that the real-time gun sound monitoring all day long is realized.
In one embodiment, the acquisition device comprises four microphones distributed in an array; when calculating the sound source position of the gunshot, the gunshot processing unit is further used for calculating the sound source position of the gunshot according to the positions of the four microphones and the gunshot recognition time.
Further, the gunshot processing unit is further configured to determine whether the calculated sound source position of each gunshot is within a set range; and selecting a sound source position of a gunshot from the same set range and sending the sound source position to the alarm notification unit, so that the alarm notification unit only sends one piece of reminding information aiming at the gunshot at the same position. The reminding information is sent by only selecting the sound source position of one gun sound in the same set range, so that the problem that the sound source position information of a plurality of gun sounds is sent by obtaining the same gun sound by a plurality of acquisition devices is avoided, and the interference on the judgment of workers is avoided.
The position of the sound source of the gunshot is calculated by selecting the position of the acquisition equipment which recognizes the gunshot at the earliest and the gunshot recognition time, so that the workload of calculation processing is greatly reduced, and the effects of energy conservation and power conservation are achieved.
In another preferred embodiment, the acquisition device comprises a microphone; when the sound source position of the gunshot is calculated, the gunshot processing unit is further used for sequencing the microphones with the gunshot recognized according to the sequence of the gunshot recognized; and selecting the positions of the first three microphones and the gun sound identification time to calculate the sound source position of the gun sound. The positions of the first three microphones and the gun sound identification moment are selected to calculate the sound source position of the gun sound, so that the workload of calculation processing is greatly reduced, and the effects of energy conservation and power conservation are achieved.
Further, the gunshot processing unit is also used for judging whether the first three selected microphones are positioned in a set area; if the microphones are judged not to be in the set area, the gun sound identified by the microphones not in the set area is determined to be new gun sound, the microphones which are positioned at the front of the gun sound identification time are selected around the microphones not in the set area, the sound source position of the new gun sound is calculated, and the microphones which are positioned at the front of the gun sound identification time are selected around the microphones in the set area, and the sound source position of the gun sound is calculated.
Furthermore, if two microphones are not in the setting area and the two microphones are not in the same setting area, the gunshot processing unit is further configured to sort the microphones with the gunshot recognized according to the order of the gunshot recognized around each microphone not in the setting area, select the positions of the two front microphones and the gunshot recognition time, and calculate the sound source position of the corresponding new gunshot.
If one microphone is not in the set area, the gunshot processing unit is also used for sequencing the microphones with the gunshot recognized at the periphery of the microphone not in the set area according to the sequence of the gunshot recognized, selecting the positions of the two front microphones and the gunshot recognition time, and calculating the sound source position of the new gunshot.
Specifically, it is determined whether the first three selected microphones are located in a set area: and drawing a set area by taking one of the three microphones as a center and taking the set distance value as a radius, and judging whether the three microphones are positioned in the drawn set area. Selecting a microphone with a shot recognition moment in front at the periphery of the microphones in the set area: and sequencing the microphones with the gunshot recognized in the marked set area according to the sequence of the gunshot recognized, and then selecting the front microphone.
Specifically, a microphone with a shot recognition time ahead is selected around a microphone not in the setting area: and taking the microphone which is not in the set area as a center, marking out another set area by taking the set distance value as a radius, sequencing the microphones with the gunshot recognized in the marked out another set area according to the sequence of the gunshot recognized, and selecting the front microphone.
If the guntones of two or three different positions are emitted simultaneously or in an extreme time, it is difficult to accurately distinguish the position of each guntone by human, which causes difficulty in pursuing. The method comprises the steps of judging whether the first three selected microphones are located in a set area or not so as to judge the obtained gunshot; if the first three microphones are in the same set area, the three microphones identify the same gunshot, and the sound source position of the gunshot can be calculated according to the positions of the first three microphones and the corresponding gunshot identification time; if two microphones are not in the set area and the two microphones are not in the same set area, the three microphones acquire the gunvoices at three different positions with similar sounding time, and the other two earlier gunvoice recognition moments and the positions of the corresponding microphones are acquired in the set area around each microphone acquiring the gunvoices, so that three groups of gunvoice recognition moments and the positions of the corresponding microphones are acquired respectively for the three different gunvoices, and the sound source positions of the corresponding gunvoices are calculated respectively according to each group of data, so that the sound source positions of the three different gunvoices are acquired; if one microphone is not in the set area, the two microphones in the same set area collect the same gunshot, and the microphones not in the set area collect another gunshot with similar time and different positions, the microphones which recognize the gunshots are sequenced on the periphery of the microphones in the set area according to the sequence of recognizing the gunshots, and the positions of the two front microphones and the moment of recognizing the gunshots are selected and the sound source position of the gunshots is calculated. And then, the microphones with the gunshot recognized are sequenced on the peripheries of the microphones which are not in the set area according to the sequence of the gunshot recognized, the positions of the two front microphones and the gunshot recognition time are selected, and the new sound source position of the gunshot is calculated.
In this embodiment, the gunshot processing unit is further configured to identify whether the collected audio data contains a gunshot or not by using a voice recognition technology.
Further, the gunshot processing unit is further configured to obtain all types of gunshot voiceprint models, match each of the gunshot voiceprint models with the voiceprint features of the acquired audio data, and if the matching of the gunshot voiceprint models and the voiceprint features of the acquired audio data is successful, the acquired audio data contains gunshots.
Furthermore, if the matching of the sound pattern model of the gun sound and the sound pattern characteristics of the collected audio data is successful, the gun sound data matched with the sound pattern model of the gun sound in the collected audio data is extracted.
Preferably, the gunshot processing unit is further configured to identify a gunshot type of the successfully matched gunshot voiceprint model if the gunshot voiceprint model is successfully matched with the voiceprint features of the acquired audio data.
In another specific embodiment, a set threshold range of sound wave frequency is set in the gunshot processing unit, the gunshot processing unit is further configured to match the sound wave frequency of the collected audio data with the set threshold range of sound wave frequency, and if the matching of the sound wave frequency of the collected audio data with the set threshold range of sound wave frequency is successful, the collected audio data contains the gunshot.
Furthermore, the alarm notification unit is used for sending reminding information of the sound source position of the gunshot by sending a text message and/or a voice message. Preferably, the reminder information includes the location information of the gunshot and the type of gunshot. Specifically, the reminding information is sent by means of sending a short message to a mobile phone of a worker in the protected area, sending a WeChat message, telephone voice notification, voice alarm prompt of a monitoring station and the like.
Because the staff in the protected area usually can not watch on duty to monitor and hunt at night, the application can realize the real-time monitoring all day long, if monitor the gunshot at night, can inform the staff to trace through the way of telephone pronunciation to better play the monitoring effect to the condition of stealing hunting in the protected area.
Preferably, the positioning system further comprises a solar cell panel connected with the acquisition equipment and the gunshot recognition unit, and the acquisition equipment and the gunshot recognition unit are powered by the solar cell panel, so that the positioning system is more environment-friendly and energy-saving.
Furthermore, each acquisition device and the corresponding gunshot recognition unit are installed, connected and arranged in the monitoring area at intervals.
In a specific embodiment, the gunshot processing unit and the corresponding gunshot recognition unit are installed and connected and are arranged in the monitoring area at intervals, each sound collection point can realize sound collection, gunshot recognition and calculation of the sound source position of the gunshot, the alarm notification unit is a signal emitting device, and the sound source position containing the gunshot is sent to a management platform or a worker in the protection area through the signal emitting device.
In another preferred embodiment, the gunshot processing unit and the alarm notification unit are arranged in a cloud platform or a studio of a protected area, the gunshot recognition unit is connected with a signal transmitting device in an installing mode, the signal transmitting device is used for transmitting audio data of the recognized gunshot to the gunshot processing unit, the gunshot processing unit executes the steps of sequencing acquisition equipment which recognizes the gunshot according to the sequence of the recognized gunshot or sequencing microphones which recognize the gunshot according to the sequence of the recognized gunshot, and the like, and finally the calculated sound source position is transmitted to the alarm notification unit.
The following describes the operation of the gunshot positioning method of the present invention.
The method comprises the steps that surrounding sounds are collected through collection equipment and audio data are formed, whether a gunshot occurs in the audio data is monitored in real time through a gunshot processing unit, if the gunshot occurs, the time for identifying the gunshot is obtained, the sound source position of the gunshot is calculated through a TDOA (time difference of arrival) positioning algorithm technology, and an alarm notification unit sends reminding information of the sound source position of the gunshot in a text message and/or voice message sending mode.
Referring to fig. 1, the present invention further provides a gunshot positioning method, including the following steps:
s101: and providing acquisition equipment, arranging a plurality of acquisition equipment in the monitoring area at intervals, and acquiring surrounding sound in real time through the acquisition equipment to form corresponding audio data.
S102: and identifying whether the collected audio data contains the gunshot or not.
S103: and if the acquired audio data contains the gunshot, acquiring the gunshot identification moment.
S104: and calculating the sound source position of the gunshot by using a TDOA (time difference of arrival) positioning algorithm technology according to the position of the acquisition equipment for recognizing the gunshot and the gunshot recognition time.
S105: and sending reminding information comprising the sound source position of the gunshot.
The invention arranges a plurality of acquisition devices in the monitoring area to ensure that the acquisition range of all the acquisition devices covers the whole monitoring area, the method comprises the steps of collecting surrounding sounds in real time through a collecting device, forming audio data, identifying whether the collected audio data contains a gunshot or not, acquiring the gunshot identification time if the gunshot is identified, calculating the sound source position of the gunshot by using a TDOA (time difference of arrival) positioning algorithm technology according to the position of the collection equipment for recognizing the gunshot and the gunshot recognition time, sending reminding information of the sound source position of the gunshot, so as to rapidly and accurately provide the reminding information of the sound source position of the gunshot for the staff in the protected area, therefore, the method is convenient for the staff to quickly take pursuit actions, improves the success rate of stealing, hunting and pursuing, and avoids the problems of time and labor waste and easy error of manual monitoring by intelligently monitoring the gunshot in the monitoring area in real time.
In one embodiment, the provided acquisition device comprises four microphones distributed in an array;
when calculating the sound source position of the gunshot, the calculation of the sound source position of the gunshot is performed based on the positions of the four microphones and the gunshot recognition time.
Further, judging whether the calculated sound source position of each gun sound is within a set range; and selecting a sound source position of a gunshot from the same set range to send reminding information, so that the alarm notification unit only sends one piece of reminding information aiming at the gunshot at the same position. The reminding information is sent by only selecting the sound source position of one gun sound in the same set range, so that the problem that the sound source position information of a plurality of gun sounds is sent by obtaining the same gun sound by a plurality of acquisition devices is avoided, and the interference on the judgment of workers is avoided.
In another preferred embodiment, an acquisition device is provided comprising a microphone;
when the sound source position of the gunshot is calculated, the microphones with the gunshot recognized are sequenced according to the sequence of the gunshot recognized;
and selecting the positions of the first three microphones and the gun sound identification time to calculate the sound source position of the gun sound.
Further, the positioning method further comprises:
judging whether the first three selected microphones are positioned in a set area or not;
if the microphones are judged not to be in the set area, the gun sound identified by the microphones not in the set area is determined to be new gun sound, the microphones which are positioned at the front of the gun sound identification time are selected around the microphones not in the set area, the sound source position of the new gun sound is calculated, and the microphones which are positioned at the front of the gun sound identification time are selected around the microphones in the set area, and the sound source position of the gun sound is calculated.
Furthermore, a distance threshold value is arranged in the gunshot processing unit;
if two microphones are not in the set area and the two microphones are not in the same set area, the microphones with the gunshot recognized are sequenced around each microphone not in the set area according to the sequence of the gunshot recognized, the positions of the two front microphones and the gunshot recognition time are selected, and the corresponding new sound source position of the gunshot is calculated.
If one microphone is not in the set area, the microphones with the gunshot recognized are sequenced around the microphone not in the set area according to the sequence of the gunshot recognized, the positions of the two front microphones and the gunshot recognition moment are selected, and the sound source position of the new gunshot is calculated.
In the embodiment, whether the shot is included in the collected audio data is identified by using a voice recognition technology.
Further, all types of gun sound voiceprint models are obtained, each gun sound voiceprint model is matched with the voiceprint characteristics of the collected audio data, and if the gun sound voiceprint models are successfully matched with the voiceprint characteristics of the collected audio data, the collected audio data contain gun sound.
Furthermore, if the sound pattern characteristics of the gun sound pattern model and the collected audio data are successfully matched, the gun sound processing unit extracts the gun sound data matched with the gun sound pattern model from the collected audio data.
Preferably, if the gun sound print model is successfully matched with the sound print characteristics of the acquired audio data, the gun sound processing unit identifies the gun sound type of the successfully matched gun sound print model.
In another embodiment, the sound wave frequency of the collected audio data is matched with the set threshold range of the sound wave frequency by setting the set threshold range of the sound wave frequency, and if the matching of the sound wave frequency of the collected audio data and the set threshold range of the sound wave frequency is successful, the collected audio data contains a gunshot.
In the embodiment, the reminding information of the sound source position of the gunshot is sent by sending a text message and/or a voice message.
Claims (10)
1. A gunshot positioning method is characterized by comprising the following steps:
providing acquisition equipment, arranging a plurality of acquisition equipment in a monitoring area at intervals, and acquiring surrounding sound in real time through the acquisition equipment to form corresponding audio data;
identifying whether the collected audio data contains a gunshot or not;
if the collected audio data contains the gunshot, acquiring the gunshot identification moment;
calculating the sound source position of the gunshot by using a TDOA (time difference of arrival) positioning algorithm technology according to the position of the collection equipment for recognizing the gunshot and the gunshot recognition time;
and sending reminding information comprising the sound source position of the gunshot.
2. The gunshot positioning method according to claim 1,
the provided acquisition equipment comprises four microphones distributed in an array;
and when calculating the sound source position of the gunshot, calculating the sound source position of the gunshot according to the positions of the four microphones and the gunshot recognition time.
3. The gunshot positioning method as recited in claim 2, further comprising:
judging whether the calculated sound source position of each gunshot is within a set range;
and selecting a sound source position of a gunshot from the same set range to send reminding information.
4. The gunshot positioning method according to claim 1,
the provided acquisition device comprises a microphone;
when the sound source position of the gunshot is calculated, the microphones with the gunshot recognized are sequenced according to the sequence of the gunshot recognized;
and selecting the positions of the first three microphones and the gun sound identification time to calculate the sound source position of the gun sound.
5. The gunshot positioning method as recited in claim 4, further comprising:
judging whether the first three selected microphones are positioned in a set area or not;
if the microphones are judged not to be in the set area, the gun sound identified by the microphones not in the set area is determined as new gun sound, the microphones which are positioned at the front of the gun sound identification time are selected at the periphery of the microphones not in the set area, the sound source position of the new gun sound is calculated, and the microphones which are positioned at the front of the gun sound identification time are selected at the periphery of the microphones in the set area, and the sound source position of the gun sound is calculated.
6. A gunshot positioning system, comprising:
a collection device for collecting ambient sound to form corresponding audio data;
the gunshot recognition unit is connected with the acquisition equipment and used for recognizing whether the acquired audio data contains the gunshot or not, and if the acquired audio data contains the gunshot, acquiring a gunshot recognition moment;
the gunshot processing unit is connected with the gunshot recognition unit and is used for calculating the sound source position of the gunshot by using a TDOA (time difference of arrival) positioning algorithm technology according to the position of the collection equipment for recognizing the gunshot and the gunshot recognition time;
and the alarm notification unit is connected with the gunshot processing unit and is used for sending reminding information containing the sound source position of the gunshot.
7. The gunshot positioning system of claim 6,
the acquisition equipment comprises four microphones distributed in an array;
when calculating the sound source position of the gunshot, the gunshot processing unit is further used for calculating the sound source position of the gunshot according to the positions of the four microphones and the gunshot recognition time.
8. The gunshot positioning system of claim 7,
the gunshot processing unit is also used for judging whether the calculated sound source position of each gunshot is positioned in a set range; and selecting a sound source position of a gunshot from the same set range and sending the sound source position to the alarm notification unit.
9. The gunshot positioning system of claim 6,
the acquisition device comprises a microphone;
when the sound source position of the gunshot is calculated, the gunshot processing unit is further used for sequencing the microphones with the gunshot recognized according to the sequence of the gunshot recognized; and selecting the positions of the first three microphones and the gun sound identification time to calculate the sound source position of the gun sound.
10. The gunshot positioning system of claim 9,
the gunshot processing unit is also used for judging whether the first three selected microphones are positioned in a set area; if the microphones are judged not to be in the set area, the gun sound identified by the microphones not in the set area is determined as new gun sound, the microphones which are positioned at the front of the gun sound identification time are selected at the periphery of the microphones not in the set area, the sound source position of the new gun sound is calculated, and the microphones which are positioned at the front of the gun sound identification time are selected at the periphery of the microphones in the set area, and the sound source position of the gun sound is calculated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111019679.5A CN113721196B (en) | 2021-09-01 | 2021-09-01 | Gunshot positioning method and positioning system thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111019679.5A CN113721196B (en) | 2021-09-01 | 2021-09-01 | Gunshot positioning method and positioning system thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113721196A true CN113721196A (en) | 2021-11-30 |
| CN113721196B CN113721196B (en) | 2024-09-27 |
Family
ID=78680416
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111019679.5A Active CN113721196B (en) | 2021-09-01 | 2021-09-01 | Gunshot positioning method and positioning system thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113721196B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114355289A (en) * | 2022-03-19 | 2022-04-15 | 深圳市烽火宏声科技有限公司 | Sound source positioning method, sound source positioning device, storage medium and computer equipment |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20090009479A (en) * | 2007-07-20 | 2009-01-23 | 안태영 | Alarm system for monitoring gunshot and method thereof |
| JP2009246827A (en) * | 2008-03-31 | 2009-10-22 | Nippon Hoso Kyokai <Nhk> | Device for determining positions of sound source and virtual sound source, method and program |
| US20110103191A1 (en) * | 2009-10-30 | 2011-05-05 | Samsung Electronics Co., Ltd. | Apparatus and method to track positions of multiple sound sources |
| KR20140015894A (en) * | 2012-07-26 | 2014-02-07 | 삼성테크윈 주식회사 | Apparatus and method for estimating location of sound source |
| CN103852746A (en) * | 2014-03-14 | 2014-06-11 | 易美泰克影像技术（北京）有限公司 | Gunshot positioning and orienting device |
| CN106199522A (en) * | 2016-08-30 | 2016-12-07 | 北京声华兴业科技有限公司 | The acoustic emission source locating method of a kind of cylinder storage tank and device thereof |
| CN110927669A (en) * | 2019-12-14 | 2020-03-27 | 大连理工大学 | CS (circuit switched) multi-sound-source positioning method and system for wireless sound sensor network |
| US20200381006A1 (en) * | 2019-05-28 | 2020-12-03 | Utility Associates, Inc. | Minimizing Gunshot Detection False Positives |
-
2021
- 2021-09-01 CN CN202111019679.5A patent/CN113721196B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20090009479A (en) * | 2007-07-20 | 2009-01-23 | 안태영 | Alarm system for monitoring gunshot and method thereof |
| JP2009246827A (en) * | 2008-03-31 | 2009-10-22 | Nippon Hoso Kyokai <Nhk> | Device for determining positions of sound source and virtual sound source, method and program |
| US20110103191A1 (en) * | 2009-10-30 | 2011-05-05 | Samsung Electronics Co., Ltd. | Apparatus and method to track positions of multiple sound sources |
| KR20140015894A (en) * | 2012-07-26 | 2014-02-07 | 삼성테크윈 주식회사 | Apparatus and method for estimating location of sound source |
| CN103852746A (en) * | 2014-03-14 | 2014-06-11 | 易美泰克影像技术（北京）有限公司 | Gunshot positioning and orienting device |
| CN106199522A (en) * | 2016-08-30 | 2016-12-07 | 北京声华兴业科技有限公司 | The acoustic emission source locating method of a kind of cylinder storage tank and device thereof |
| US20200381006A1 (en) * | 2019-05-28 | 2020-12-03 | Utility Associates, Inc. | Minimizing Gunshot Detection False Positives |
| CN110927669A (en) * | 2019-12-14 | 2020-03-27 | 大连理工大学 | CS (circuit switched) multi-sound-source positioning method and system for wireless sound sensor network |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114355289A (en) * | 2022-03-19 | 2022-04-15 | 深圳市烽火宏声科技有限公司 | Sound source positioning method, sound source positioning device, storage medium and computer equipment |
| CN114355289B (en) * | 2022-03-19 | 2022-06-10 | 深圳市烽火宏声科技有限公司 | Sound source positioning method, sound source positioning device, storage medium and computer equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113721196B (en) | 2024-09-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105223894A (en) | A kind of Internet of Things detecting and controlling system and control method thereof | |
| CN106656310A (en) | Method and system for unmanned aerial vehicles to execute tasks | |
| CN102322943A (en) | Detection system and method for sound abnormality of power equipment | |
| CN109460063A (en) | A kind of unmanned plane search and rescue system and its method | |
| CN101833843A (en) | Monitoring system based on voiceprint authentication | |
| CN113721196A (en) | Gunshot positioning method and system | |
| CN108694491A (en) | A kind of thermal power plant scheduling system | |
| CN110619738B (en) | Joint defense warning method and device | |
| CN114594490A (en) | Laser external damage prevention method and device for power line | |
| CN205281241U (en) | Workshop safe production management system of enterprise | |
| CN114024574B (en) | Hidden danger state identification method and equipment for power transmission line | |
| CN110312215A (en) | One kind is for beacon/light beacon Intellisense and navigation supported information distribution device | |
| CN108881833A (en) | A kind of audio-video joint-monitoring system and method | |
| CN101377886A (en) | Electronic apparatus for obtaining evidence of vehicle peccancy whistle, electronic policeman system and evidence-obtaining method | |
| CN211123277U (en) | Engineering field personnel positioning equipment based on GPS positioning technology | |
| CN210091231U (en) | Wisdom garden management system | |
| CN204258950U (en) | Sound identification location cloud platform camera system | |
| CN204833568U (en) | Broken detection device of glass and LED lighting device | |
| CN106530641A (en) | Intelligent anti-lost device, working method thereof and intelligent anti-lost system | |
| CN201051309Y (en) | Car traffic violation whistling electronic police system | |
| Perez et al. | Acoustic event localization on an Arduino-based wireless sensor network | |
| CN109951799A (en) | A kind of object impact point positioning method based on sound | |
| CN115015837A (en) | Audio positioning epaulet, audio positioning system and method | |
| Bandaranayake et al. | GreenSoal: Illegal Tree Logging Detection System Using IOT | |
| CN109327681A (en) | A kind of specific people identifies warning system and its method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |