KR20210078056A - Noise source tracking system and noise source tracking method using relative position and time synchronization between personnel - Google Patents

Abstract

The present invention relates to a noise source tracking system and a noise source tracking method using a relative position and time synchronization between personnel, comprising: a plurality of user equipment respectively worn by a plurality of users; and calculation equipment which performs data communication with the user equipment. The user equipment includes: a hydrophone which measures an outer noise; a measuring means for measuring the relative position between users; and a clock which performs a real-time clock (RTC). When the noise of a preset decibel (dB) on the hydrophone is received, the information on the relative position with other users and measuring time, which are respectively measured in each of the plurality of user equipment, is transmitted to the calculation equipment. Accordingly, the present invention is able to more precisely detect the position of noise sources.

Description

Noise source tracking system and noise source tracking method using relative position and time synchronization between personnel {NOISE SOURCE TRACKING SYSTEM AND NOISE SOURCE TRACKING METHOD USING RELATIVE POSITION AND TIME SYNCHRONIZATION BETWEEN PERSONNEL}

The present invention is a noise source tracking system and noise source tracking method using relative position and time synchronization between personnel, and in more detail, based on information on the time of noise reached by a hearing device carried by a plurality of personnel, A system and method capable of tracking the location of a noise source.

In military activities such as suppressing armed espionage or performing counter-terrorism operations, it is common to move to the operational area in the size of a squad, platoon, or company. At this time, if the position of the enemy to be suppressed cannot be grasped, the enemy in the surrounding area is detected through the boundary of the key. Here, if the enemy first finds an ally and then attacks with a weapon, it is common for the ally to identify the enemy's location through gunshots or firing noise.

However, in the case of tracing a noise source by relying only on the hearing of soldiers, there is a problem in that it is difficult to determine the exact location of the opponent due to the noise that is reflected and arrives within the operation area. Accordingly, in Korean Patent Publication No. 10-1614602 ("Location detection method and apparatus using the arrival time difference of an acoustic signal", hereinafter referred to as 'prior art 1'), A technique for tracking a generated acoustic signal is disclosed.

Briefly describing the prior art 1 with reference to FIG. 1, the prior art 1 is based on the incident angle and arrival order of the acoustic signals received using the first microphones 631 to 7th microphones 637 arranged in different directions. It is provided to track the incident direction. However, the prior art 1 has a disadvantage in that a loss of personnel occurs because a vehicle equipped with a device having a plurality of microphones moves together or a few people have to move while carrying the device.

In addition, when a plurality of microphones are spaced apart from each other in one device, since the relative distance is narrow, there is a problem in that the difference in time of noise reaching each microphone is slight. Accordingly, there is a problem in that it is difficult to calculate the exact position of the noise source due to an error appearing in the microphone or the processor, even if it is determined in microseconds or nanoseconds. Accordingly, since only the direction of the enemy's position is recognized, it is difficult to perform operations such as spreading siege, and the fatigue of the participating personnel is aggravated, which can lead to problems in which efficiency is lowered.

In addition, in the currently published Korean Patent Publication No. 10-0937525 ("Using an acoustic sensor and a method for maintaining public security using the same," hereinafter referred to as 'prior art 2'), A plurality of acoustic sensors are randomly scattered and located in a place, but each forms a sensor node, and a technique for recognizing the sound related to an event or accident and estimating the location through a distributed method between the plurality of sensor nodes is disclosed.

The prior art 2 will be briefly described with reference to FIG. 2, in which the prior art 2 includes a plurality of sensor nodes 12, a sink node 14 that collects information generated from a plurality of sensor nodes 12, and the sink note 14 ) is configured to include a base station 20 that receives information through and delivers it to the policing agency 30 . At this time, since the plurality of sensor nodes 12 described above must form a group based on the sound generated by the event, the prior art 2 has a problem in that it is necessary to build a system through a large amount of sound sensors on a wide field.

Even if such a system is installed in the city center, there is a problem that a lot of initial cost and maintenance cost are required, and there is a disadvantage that is not practical because military operations are not limited to the city center. And even if the system detects the location of the sound through a number of sensor nodes, there is a problem in that the suppression time is delayed because a separate dispatched manpower is requested from the security maintenance organization, and accurate sound is generated to the police or security personnel dispatched It is difficult to use in the field because it only informs the area to be visited at the beginning, not the location.

In addition, since the above-described prior art tracks a noise source through a microphone that is pre-installed at a predetermined location, it is difficult to change the installation location, and there is a disadvantage in that it cannot be used while moving. In addition, since a method for synchronizing time between a plurality of installed microphones is not separately described in the prior art, there is a problem in that it is not possible to accurately track the location of a noise generating source due to an error appearing during use.

Korea Patent Publication No. 10-1645135 ("Sound tracking method and system using a microphone array and coordinate conversion technique") 2016.08.03. Announcement Korea Patent Publication No. 10-1614602 ("Location detection method and apparatus using the arrival time difference of an acoustic signal") 2016.04.21. Announcement Korean Patent Publication No. 10-0937525 ("Using an acoustic sensor for policing UNS system and a policing method using the same") 2010.01.19. Announcement

The present invention has been devised to solve the problems of the prior art, each of a plurality of persons is provided with a hearing aid for collecting sound signals, a distance measuring means for measuring the mutual distance, and A noise source tracking system and a noise source tracking method using the relative location and time synchronization between personnel who track the location of a noise source based on visual information.

The noise source tracking system of the present invention for achieving the above object, a plurality of user equipment each worn by a plurality of users; and a computing device communicating data with the user equipment, wherein the user equipment includes a hearing device for measuring external noise, a measuring means for measuring a relative position between users, and a real-time clock that enables synchronization between users. , RTC) comprising a clock, and when noise of more than decibel (dB) set in the hearing device is received, information about the relative position and measurement time with other users, measured in each of a plurality of the user equipment, is provided to the computing equipment can be sent to

In addition, among the plurality of clocks of the user equipment, one or more clocks may be set as a reference clock, and time synchronization may be performed with other clocks based on the time of the reference clock.

In addition, the measuring means can measure a relative position with another user in a TWR (Two-Way Ranging) method including an Impulse-Radio Ultra-Wideband (IR-UWB).

In addition, time synchronization can be performed using a two-way ranging (TWR) method using an impulse-radio ultra-wideband (IR-UWB) between a plurality of user equipments.

In addition, the computing device selects three or more user equipments from among the plurality of received information on the user equipment, and based on the relative positions between the three or more user equipments and the measurement time of each of the three or more user equipments, the The location of the noise source can be calculated.

In addition, the present invention selects four or more user equipment as candidates among the plurality of received information on the user equipment, and matches information measured by two user equipment among the four or more user equipment, but _{repeats n} C ₂ times, Three or more user equipments with relatively high relevance can be selected. (where n = the number of selected candidate user equipment)

In addition, the computing device transmits location information including the location of the noise source calculated by the plurality of user equipment, and the location information includes a distance to the noise source based on the location of the user equipment and the noise source. Information on the direction of the may be included.

In addition, the user equipment may be provided with a display on which the location information is output.

In addition, a GPS module may be formed in any one or more of the plurality of user equipments.

In addition, the user equipment of the present invention for achieving the object as described above, measuring means including IR-UWB for measuring the positioning; a clock with a real-time clock; a communication device for data communication with the computing device; and a hearing device that measures external noise.

In this case, the user equipment may further include a display on which the location information of the noise source is output.

In addition, in order to achieve the object as described above, the present invention provides a noise source tracking method for tracking the location of a noise source when noise of more than a set decibel is generated, a) in a plurality of user equipment as a communication device of a computing device Receiving information on each measured relative position and measurement time with other users; b) calculating, by the processor of the computing equipment, the location of the noise source by using a plurality of pieces of information on the relative location and measurement time; and c) transmitting, by the communication device of the computing equipment, the location information of the noise source to each of the plurality of user equipment, wherein the processor determines the location of the individual user equipment with respect to the location of the noise source calculated by the processor in step b. The distance and direction are calculated as a reference, and in step c, the communication device may provide customized information for the individual user equipment.

In the noise source tracking system and noise source tracking method using the relative position and time synchronization between personnel according to the present invention according to the above configuration, distance measurement and time synchronization using IR-UWB and TWR (Two-Way Ranging) are performed simultaneously, There is an advantage in that it is possible to provide a mobile device with higher utilization. Accordingly, a plurality of users can perform an operation while wearing the user equipment, the physical separation distance between the plurality of listening devices is widened, and there is an advantage in that it is possible to calculate the location of the noise source more accurately in the calculation equipment.

In addition, the present invention has the advantage that high-precision time synchronization is possible by performing wireless time synchronization using IR-UWB of each user equipment. Accordingly, through precise time synchronization, data embedded in the transmission of information on the generated noise source to the computing equipment can be provided so that a more accurate result can be calculated.

Accordingly, the present invention can provide each user with customized information on the location of the noise source, and thus has the advantage of enabling precise operation. That is, the present invention can more accurately provide the direction and distance to the noise source based on the location of each user.

1 is a conceptual diagram illustrating a position detection apparatus for performing a position detection method using an arrival time difference of an acoustic signal according to the prior art;
Figure 2 is a view showing a DASL (Distributed Acoustic Source Localization) recognition method applied to a policing USN (Ubiquitous Sensor Network) system using an acoustic sensor according to the prior art;
3 is a schematic diagram of a noise source tracking system according to the present invention;
4 is a block diagram showing the detailed configuration of a noise source tracking system according to the present invention.
5 is a schematic diagram showing the relative position and time synchronization process between a plurality of personnel in the noise source tracking system according to the present invention.
6 is a schematic diagram illustrating transmission of information from equipment worn by each person to a server when noise is generated from a noise source in the noise source tracking system according to the present invention.
7 is an exemplary view showing the calculation of one tracking line through two listeners in the calculation equipment of the noise source tracking system according to the present invention.
8 is an exemplary view illustrating the calculation of the location of the noise source through information received from the computing equipment of the noise source tracking system according to the present invention.

Hereinafter, a noise source tracking system and a noise source tracking method using relative positions and time synchronization between personnel according to the present invention will be described in detail with reference to the accompanying drawings. The drawings introduced below are provided as examples in order to sufficiently convey the spirit of the present invention to those skilled in the art. Accordingly, the present invention is not limited to the drawings presented below and may be embodied in other forms. Also, like reference numerals refer to like elements throughout.

If there is no other definition in the technical terms and scientific terms used at this time, it has the meaning commonly understood by those of ordinary skill in the art to which this invention belongs, and the gist of the present invention is unnecessary in the following description and accompanying drawings Descriptions of known functions and configurations that may be blurry will be omitted.

3 and 4 relate to a noise source tracking system using the relative position and time synchronization between personnel. FIG. 3 is a schematic diagram of the noise source tracking system, and FIG. 4 is a block diagram showing the detailed configuration of the noise source tracking system, respectively.

3 and 4 , the noise source tracking system of the present invention includes a communication device capable of data communication with the outside, a computing device 100 including a process for data calculation and control, and a plurality of wearing user equipment, respectively. It relates to a system for operating data between the operation personnel 200 and the noise source 300 that generates noise, consisting of users (210, 220, 230, 240, 250) of the. Here, the noise source 300 can be directly recognized by a plurality of users 210, 220, 230, 240, and 250 of the operation personnel 200, but as described above, what can be confirmed by human hearing as described above involves a lot of subjective factors. can

Accordingly, in the present invention, the basis for measuring the noise generated by the noise source 300 by the operation execution personnel 200 described below is measured from the user equipment 211, 221,231, 241,251 worn by the operation execution personnel 200, respectively. , more specifically, the user equipment 211, 221,231, 241,251 may measure the external noise by using a hearing aid included in each. At this time, the listener may be configured as a sound sensor including a microphone to convert the vibration of the received noise into a current, and a configuration for amplifying the received sound for higher sensitivity measurement is further included. may be In addition, if the user equipment in which the listening device is formed is composed of three or more, since the computing device 100 receives related data from each of the user equipment and calculates the location of the silencer, a plurality of users to be described later The equipment may be three or more user equipment.

The user equipment may include a communication device, a hearing device, a watch, and a measuring means, respectively. Here, the communication device of the user equipment may be a module capable of data communication with the communication device of the computing equipment. In addition, the computing device may be a separate control center disposed remotely, a mobile computing device that is moved together with operation execution personnel, or may be formed in any one of a plurality of user equipment. According to each case, the communication device may be configured with another communication module. For example, in the case of a control center where the computing equipment is remotely located, the communication device may be configured with a mid-to-long-range wireless communication interface, and any one When the computing equipment is configured in the user equipment, it may be configured as a proximity wireless communication interface or a medium-range wireless communication interface, or wired communication may be performed.

The clock of the user equipment may be configured with a Real Time Clock (RTC), and more specifically, it may build its own time domain by increasing the RTC value in a counter, timer or delay manner. Here, the time may be configured such that any one of the plurality of user equipments is determined as a reference clock so that the clocks of other user equipments are synchronized thereto. Of course, a method in which the reference clock is synchronized to the system time according to Coordinated Clock Time (UTC) and other clocks are synchronized to the reference clock may also be used, and the reference clock may establish a time domain separate from the system time. have. Through this, the present invention provides an error in noise measurement time caused by an error that occurs due to different time delays when each user equipment synchronizes to the system time, or an error due to a delay appearing in the RTC clock operation of the processor of each user equipment. This has the advantage of being able to measure the time more accurately.

The measuring means of the user equipment may include a distance sensor to measure a distance to another user. In addition, the distance sensor may be configured as an ultrasonic distance sensor or a laser sensor, and in an embodiment of the present invention, the distance sensor may be configured as an Impulse-Radio Ultra-Wideband (IR-UWB). In this case, the IR-UWB may measure relative positioning in a two-way ranging (TWR) method. Here, TWR measures the distance through signal transmission/reception between two user equipment including IR-UWB, and calculates the relative position by measuring the round-trip time of the signal between the two IR-UWBs, and a plurality of IR-UWBs. By doing this, location information can be calculated more precisely. At this time, when the IR-UWB of each of the plurality of user equipment transmits and receives radio waves to and from each other and transmits report data on the round trip time of the signal to the computing equipment, the computing equipment uses the report data received from each user equipment to transmit the report data to other user equipment. The relative position of and can be calculated. Alternatively, the IR-UWB may use any one or two or more of TWR (Two-Way Ranging), ToA (Time of Arrival), AoA (Angle of Arrival), and TDoA (Time Difference of Arrival) together to perform positioning. . In addition to this, the measuring means may measure the position in various ways, such as measuring the frequency reached by each user equipment, and calculating the relative position by transmitting the data to the computing equipment.

In addition, according to the present invention, TWR-based time synchronization using IR-UWB between a plurality of user equipment can be achieved. At this time, any one of the plurality of user equipment is set as a reference clock as described above, and the user equipment including the reference clock is synchronized to a predetermined reference time of the reference clock using IR-UWB or other separate signal transmission means. A pulse signal may be generated, and the generated pulse signal may be transmitted to other user equipment. In addition, the other user equipment may synchronize the clock of the other user equipment with the time of the reference clock through signal exchange with the user equipment including the reference clock. Accordingly, a plurality of user equipments synchronized with the same time may generate respective measurement times through the synchronized time when a noise source is generated.

In addition, the operational personnel 200 may be police, soldiers, or security personnel who perform counter-terrorism operations or military missions. Furthermore, the noise source tracking system of the present invention can be utilized in various ways, such as being used by firefighters to track the location of an explosion source by grafting it to a fire scene. In addition, since the noise source tracking system of the present invention can be used in various areas such as search operations, military training, noise source tracking in buildings, and boundaries, tracking the location of the sniper shown in the drawing is only an example, limited to this don't do it

5 and 6 relate to a noise source tracking system using the relative position and time synchronization between personnel. FIG. 5 is a schematic diagram showing the relative position and time synchronization between personnel, and FIG. 6 is when noise is generated from the noise source. A schematic diagram showing the transmission of information from the equipment worn by each person to the server is shown respectively.

First, referring to FIG. 5 , the operation execution personnel 200 may perform an activity according to a given mission. At this time, the plurality of user equipment worn by the plurality of users of the operation personnel 200 may measure the relative positions of each other, and the respective watches may be synchronized in real time based on the reference watch.

Next, referring to FIG. 6 , when noise is generated from the noise source 300 , digital information about the noise may be generated by the hearing aids of each of the plurality of user equipment. Here, when the intensity of the noise is equal to or higher than the reference decibel (dB) set for each listening device, the user equipment generates interrupt information for the time at which the noise is measured in the hearing device, and transmits the noise measurement time to the computing device using the communication device. can In this case, each of the plurality of user equipment may be set to the same reference decibel (dB), or some may be set to a different reference decibel (dB). For example, when a plurality of users walk forward, the reference decibel (dB) set in the user equipment of the front-side users may be set higher than the reference decibel (dB) set in the user equipment of the rear-side users.

In addition, when the noise generated by the noise source 300 is higher than the reference decibel (dB) set in each user equipment, the positioning information measured by the measuring means of the user equipment may also be transmitted to the computing equipment. In addition, the computing device may calculate the location of the noise source based on a plurality of measurement times for the noise source received from the plurality of user equipment and positioning information of the plurality of user equipments. Accordingly, the present invention has an advantage in that it is possible to more accurately track the location of a noise source through a listener included in a plurality of users physically separated by a greater distance, compared to the existing technology in which a plurality of microphones are formed in one device.

7 and 8 relate to a noise source tracking system using the relative position and time synchronization between personnel, and FIG. 7 is an exemplary view showing the calculation of one tracking line through two listeners in the calculation equipment of the noise source tracking system, 8 is an exemplary view showing the calculation of the location of the noise source through the information received from the computing equipment of the noise source tracking system.

First, referring to FIG. 7 , the computing device of the present invention may calculate one tracking line based on the measurement time of the noise received on the two listeners, respectively, and the distance between the two listeners.

)를 위의 식에 입력하여 음속(V_air)을 산출할 수 있다. 그리고 소음원으로부터 상대적으로 더 이격된 청음기에서 측정되는 시각이 보다 지연되므로, 두 개의 상기 청음기에서 측정된 측정시간은 일정시간 지연된다. First, the computing equipment may receive in real time the temperature of the corresponding area measured through user equipment or a separate means. And the calculation equipment receives the received temperature (

) can be entered into the above equation to calculate the speed of sound (V _{air ).} In addition, since the time measured by the hearing aids that are relatively more spaced apart from the noise source is delayed, the measurement times measured by the two hearing devices are delayed by a predetermined time.

The delay time (T _L) between the hydrophone first measurement time (T ₁₎ and the measurement time of the hydrophone ₂ (T 2), can be calculated through the absolute value of the measured time difference, as the expression above.

And the present invention can be calculated distance (D _S) between the hydrophone and one hydrophone 2 via the measurement means as described above. _{In addition, the correction distance (D E} ) can be calculated through the speed of sound and the delay time, and the correction distance can correct where the noise source is relatively adjacent among the listener 1 and the listener 2. Here, when the measurement time measured by the hearing device 1 and the hearing device 2 is the same, the correction distance (D _E ) may be 0, and when the noise source, the hearing device 1 and the hearing device 2 are arranged side by side, the separation distance (D _s ) and It may be the same as the correction distance (D _{E ).}

,

,

Then, assuming that the reference point of the tracking line is the point where the noise source is disposed between the listener 1 and the listener 2 and the measurement time measured by the listener 1 is earlier, the distance between the listener 1 and the reference point (X) and between the listener 2 and the reference point A distance Y of may be calculated, respectively.

,

,

,

,

Then, a tracking line (A _{1 ) that satisfies the above equation can be calculated so that the delay time (T L} ) between the listener 1 and the listener 2 is constant, and the tracking line varies according to the gradually added addition distance (N) The distance between the listener 1 and the reference point (x _n ) and the distance between the variable listener 2 and the reference point (y _n ) may consist of a line connecting the coordinates of the intersection. As shown, except for the reference point, _{two points satisfying both x n} and y _n can be calculated according to the addition distance N, respectively, and when the measurement times are the same, they appear linear, but the measurement times are different from each other. In some cases, it may appear in the shape of a curved arc with a hearing aid measured relatively earlier. This is schematically indicated to explain more clearly, and may be calculated by converting it into an equation of a coordinate system in which a _{radius indicates x n} or y _{n at different positions according to each addition distance N.}

Then, referring to FIG. 8 , since one tracking line can be calculated through two listeners, when a total of N listeners are formed, a maximum of _N C ₂ tracking lines can be calculated. Here, C represents a combination. And if there are three hearing instruments, two tracking lines may be tangent at one point, or three tracking lines may be tangent to one point near a point, and the location of the noise source may be calculated as being tangent or disposed at a nearby point. .

Here, in the present invention, four or more hearing devices may be used, and four or more listening devices may be selected as candidates, respectively. Here, the criterion selected as a candidate may be selected based on the size of the measured decibel or whether the separation distance is greater than the correction distance. In addition, verification can be made again for the listeners selected as candidates, and the verification process is as follows.

_{It is possible to repeat a total of n} C ₂ times (n is the number of selected candidate listeners) by matching two of the four or more listeners selected as candidates. Then, it is possible to calculate a tangent point between _{the n} C ₂ tracking lines calculated by repeating _n C _{2 times.} Here, one or more tracking lines may be generated in which a plurality of tracking lines meet at adjacent points but meet other tracking lines at relatively spaced points. At this time, the computing device of the present invention checks the identification information of the listener constituting the tracking line, and uses the _n-1 C ₂ tracking lines calculated by repeating _n-1 C _{2 times excluding the information on the corresponding listening device.} It is also possible to calculate the final noise source location. This is because the correct measurement cannot be made due to various problems that appear as the user wears it directly, such as there are many obstacles between the listener and the noise source, or the current position of the listener is reflected rather than directly from the noise source. It has the advantage of estimating the location of the noise source more accurately by excluding information with low values.

In addition, according to the present invention, a GPS module may be formed in any one or more user equipment among a plurality of user equipment. In addition, it is possible to calculate the positions of other user equipment through the real-time location of a certain user equipment according to the satellite navigation system measured by the GPS module. Accordingly, the present invention can provide a noise source tracking system capable of determining a more accurate location while being lighter.

The present invention can track the location of the noise source through the following process using the above-described noise source tracking system.

First of all, in the present invention, when noise of more than the decibel set in each user equipment is generated, information on a relative position and measurement time with other users measured in a plurality of user equipment can be transmitted to a communication device of a computing equipment, respectively.

And, according to the present invention, the processor of the arithmetic equipment can calculate the position of the noise source using a plurality of pieces of information about the relative position and measurement time. Here, the processor of the computing device may calculate a distance and a direction based on the location of the individual user equipment with respect to the calculated location of the noise source. That is, when looking at the entire map, it is determined that the location is on a certain longitude and latitude, but since the locations of each user are different, the distance and direction to the noise source are formed differently based on each user. The processor of the present invention may process information necessary for each user through the location of each user through GPS, the relative location between each user equipment, and the like.

Then, the present invention may be configured to transmit the location information of the noise source to each of the plurality of user equipment by the communication device of the computing equipment. Accordingly, the present invention can provide customized information for the individual user equipment.

In addition, a display is formed in each user equipment, and the distance and direction to the noise source provided from the computing equipment may be output. And the user can perform the task assigned to him based on the distance and direction to the noise source output to his user equipment.

As described above, the present invention has been described with specific details such as specific components and limited embodiment drawings, but these are only provided to help a more general understanding of the present invention, and the present invention is not limited to the above one embodiment. No, various modifications and variations are possible from these descriptions by those of ordinary skill in the art to which the present invention pertains.

Therefore, the spirit of the present invention should not be limited to the described embodiments, and not only the claims described below, but also all those with equivalent or equivalent modifications to the claims are said to be within the scope of the spirit of the present invention. will be.

100: arithmetic equipment
200: number of operational personnel
210: first user
211: first user equipment
220: second user
221: second user equipment
230 ; third-party users
231: third user equipment
240: fourth user
241: fourth user equipment
250: fifth user
251: fifth user equipment
300: noise source

Claims (12)

a plurality of user equipment respectively worn by a plurality of users; and
a computing device for data communication with the user equipment;
includes,
The user equipment is
A hearing device for measuring external noise, a measuring means for measuring a relative position between users, and a clock having a real-time clock (RTC) that can be synchronized between users,
When noise above the decibel (dB) set in the hearing device is received,
Measured in each of the plurality of user equipment,
A noise source tracking system, characterized in that it transmits information about a relative position with another user and a measurement time to the computing device.
According to claim 1,
Among the clocks of the plurality of user equipment,
Any one or more clocks are set as reference clocks,
Noise source tracking system, characterized in that the other clock is time-synchronized based on the time of the reference clock.
3. The method of claim 2,
The measuring means includes IR-UWB (Impulse-Radio Ultra-Wideband) and TWR (Two-Way Ranging) method for measuring a relative position with another user.
4. The method of claim 2 or 3,
A noise source tracking system, characterized in that time synchronization is achieved in a TWR (Two-Way Ranging) method using IR-UWB (Impulse-Radio Ultra-Wideband) between multiple user equipment.
According to claim 1,
The computing device is
selecting three or more user equipments from among the received plurality of user equipment information,
Relative positions between three or more of the user equipment;
Based on the measurement time of each of the three or more user equipment,
Noise source tracking system, characterized in that for calculating the location of the noise source.
6. The method of claim 5,
Selecting four or more user equipment as candidates among the received plurality of user equipment information,
Match the information measured by two user equipment among the four or more user equipment, but _{repeat n} C ₂ times,
Noise source tracking system, characterized in that selecting three or more user equipment with a relatively high degree of relevance. (where n = the number of selected candidate user equipment)
7. The method according to claim 5 or 6,
The computing device is
Transmitting the location information including the location of the calculated noise source to a plurality of the user equipment,
The location information includes:
A noise source tracking system, characterized in that it includes information on a distance to the noise source based on the location of the user equipment and a direction to the noise source.
8. The method of claim 7,
The user equipment is
Noise source tracking system, characterized in that the display is formed to output the location information.
According to claim 1,
In any one or more of the plurality of user equipment,
Noise source tracking system, characterized in that the GPS module is formed.
Measuring means including IR-UWB for measuring positioning;
a clock with a real-time clock;
a communication device for data communication with the computing device; and
a hearing device that measures external noise;
User equipment including
11. The method of claim 10,
a display on which location information of a noise source is output;
User equipment further comprising a.
In the noise source tracking method for tracing the location of the noise source when noise above a set decibel is generated,
a) receiving information about a relative position and measurement time with other users measured by a plurality of user equipment, respectively, by a communication device of a computing device;
b) calculating, by the processor of the computing equipment, the location of the noise source by using a plurality of pieces of information on the relative location and measurement time; and
c) transmitting, by the communication device of the computing equipment, the location information of the noise source to each of a plurality of the user equipment;
includes,
For the location of the noise source calculated by the processor in step b, the distance and direction are calculated based on the location of the individual user equipment,
In the step c, the communication device provides customized information for the individual user equipment.

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