CN109375225B - Acoustic radar measurement system and measurement method thereof - Google Patents
Acoustic radar measurement system and measurement method thereof Download PDFInfo
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- CN109375225B CN109375225B CN201811332269.4A CN201811332269A CN109375225B CN 109375225 B CN109375225 B CN 109375225B CN 201811332269 A CN201811332269 A CN 201811332269A CN 109375225 B CN109375225 B CN 109375225B
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- 238000005259 measurement Methods 0.000 title claims abstract description 19
- 238000000691 measurement method Methods 0.000 title claims abstract description 10
- 238000012545 processing Methods 0.000 claims abstract description 40
- 238000004891 communication Methods 0.000 claims abstract description 34
- 238000012806 monitoring device Methods 0.000 claims abstract description 21
- 238000001514 detection method Methods 0.000 claims description 11
- 238000009434 installation Methods 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 11
- 230000007613 environmental effect Effects 0.000 claims description 9
- 238000012544 monitoring process Methods 0.000 claims description 7
- 238000004364 calculation method Methods 0.000 claims description 4
- 238000000605 extraction Methods 0.000 claims 1
- 206010039203 Road traffic accident Diseases 0.000 description 1
- 230000006399 behavior Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
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
- G01S15/00—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems
- G01S15/88—Sonar systems specially adapted for specific applications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H17/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves, not provided for in the preceding groups
-
- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/01—Detecting movement of traffic to be counted or controlled
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
- H04N7/183—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast for receiving images from a single remote source
Abstract
The invention discloses an acoustic radar measurement system and a measurement method thereof, wherein the acoustic radar measurement system comprises a monitoring device, a camera, a multichannel signal acquisition module, a gyroscope, a height sensor, a signal processing module and a communication module, wherein the monitoring device and the camera are respectively in communication connection with the input end of the multichannel signal acquisition module, the output ends of the multichannel signal acquisition module, the gyroscope and the height sensor are respectively in communication connection with the signal processing module, the output end of the signal processing module is in communication connection with the communication module, and the communication module is in communication connection with a snapshot camera and a server, so that the technical problem that the determined physical position of a whistling sound source target cannot be known in the prior art can be solved.
Description
[ field of technology ]
The invention relates to the technical field of traffic violation monitoring, in particular to an acoustic radar measurement system and a measurement method thereof.
[ background Art ]
In road traffic, vehicle drivers often draw attention of other traffic participants by whistling. Particularly, when the vehicle runs into a road section with limited visual field immediately before the vehicle runs into the road section or when pedestrians are present in front of the vehicle, the driver can give a warning through whistling so as to avoid traffic accidents as much as possible. In addition, when a whistle is heard from another vehicle traveling, the driver generally responds to the whistle. On the other hand, in a specific area, a whistle may cause a noise problem, and thus, for example, in the vicinity of a hospital, a school, a residential area, or the like, it is generally prescribed that a vehicle is prohibited from whistling or can whistle only at a limited sound volume. Thus, a blast traffic sign or signal is often provided around the road to inform the vehicle driver that a blast should be made, prohibited or only at a limited volume.
However, because drivers are different in quality and illegal behaviors are difficult to evidence, not every driver has regulations for prohibiting whistling, a whistling snapshot system is provided for collecting illegal whistling evidence on site and providing basis for law enforcement of whistling.
As a penalty basis, the detection equipment needs to detect by a third party; however, the existing snapshot equipment can only output images, is subjective and is easy to be artificially fake; or only the angle of the sound source can be output, and the metering detection work is difficult to carry out in the actual environment. When workers install the images on site, only subjective judgment can be made to see whether the images are accurately installed. Therefore, there is a need for an acoustic radar measurement system and a measurement method thereof.
[ invention ]
The invention aims to overcome the defects of the prior art, and provides an acoustic radar measurement system and a measurement method thereof, which can solve the technical problem that the determined physical position of a whistling sound source target cannot be known in the prior art, for example, a specific physical address is known, so that the measurement detection can be conveniently and objectively carried out independently, and a field worker can output the physical address through a comparison system by testing the specific physical address, and the installation effect can be objectively judged.
In order to achieve the above object, the present invention provides an acoustic radar measurement system, which is characterized in that: the intelligent monitoring device comprises a monitoring device, a camera, a multichannel signal acquisition module, a gyroscope, a height sensor, a signal processing module and a communication module, wherein the monitoring device and the camera are respectively in communication connection with the input end of the multichannel signal acquisition module, the output ends of the multichannel signal acquisition module, the gyroscope and the height sensor are respectively in communication connection with the signal processing module, and the output end of the signal processing module is in communication connection with the communication module.
Preferably, the communication module is in communication connection with the snapshot camera and the server, and the server is used for receiving and storing the illegal evidences.
Preferably, the monitoring device is a microphone array monitoring system, and the monitoring device and the camera acquire an environmental sound source and a video in real time and judge whether a whistle event occurs in real time through a voiceprint recognition algorithm of the signal processing module.
Preferably, the height sensor is used for detecting the height of the installation position of the acoustic radar, the gyroscope is used for detecting the pitching inclination angle of the acoustic radar, the signal processing module is internally provided with a sound source positioning algorithm, and the pitching angle and the horizontal angle of the sound source position are extracted through the sound source positioning algorithm.
Preferably, the built-in license plate recognition algorithm of the snapshot camera is used for controlling the snapshot camera to collect the sound source target image through the communication module when the signal processing module judges that a whistling event occurs.
The invention discloses a measuring method of an acoustic radar measuring system, which is characterized by comprising the following steps of: the method comprises the following steps:
step one: the monitoring device and the built-in camera acquire an environmental sound source and a video in real time and send the environmental sound source and the video into the signal processing module, the interference of non-whistle time is filtered through the voiceprint recognition algorithm, whether a whistle event occurs or not is judged in real time, and when the signal processing module judges that the whistle event occurs, the communication module controls the action of the snapshot camera to complete the acquisition operation of the sound source target clear image;
step two: the signal processing module is internally provided with a sound source positioning algorithm, a pitch angle, a horizontal angle and a sound cloud picture of a sound source target position can be calculated, the sound cloud picture is overlapped with a video to obtain video evidence, the height sensor detects the installation position height of the acoustic radar, the gyroscope detects the pitch inclination angle of the acoustic radar, and the detection signals are transmitted to the signal processing module;
step three: according to the pitch angle, the horizontal inclination angle and the installation position height of the acoustic radar of the sound source position in the second step, calculating by a signal processing module to obtain the physical address of the sound source target;
step four: the sound source target image acquired in the first step, the video evidence in the second step and the physical address of the sound source target obtained in the third step are combined, the complete law enforcement evidence can be recorded, and a license plate recognition algorithm built in the snapshot camera can be obtained to obtain a specific target vehicle.
The invention has the beneficial effects that: compared with the prior art, the acoustic radar measurement system and the acoustic radar measurement method provided by the invention have the advantages that the microphone array monitoring device is adopted for real-time monitoring, the real-time monitoring is sent into the signal processing module, whether a whistle event is detected in real time through voiceprint recognition, and the snapshot camera is notified to take a picture; the signal processing module is internally provided with a sound source positioning algorithm, so that the pitch angle and the horizontal angle of the sound source target position can be calculated, the height sensor detects the installation position height of the acoustic radar, the gyroscope detects the pitch inclination angle of the acoustic radar, and the detection signals are transmitted to the signal processing module; and the signal processing module calculates the physical address of the sound source target according to the monitoring result, and finally obtains the specific vehicle by combining the snap camera images.
The features and advantages of the present invention will be described in detail by way of example with reference to the accompanying drawings.
[ description of the drawings ]
FIG. 1 is a flow chart of an acoustic radar measurement system according to an embodiment of the present invention;
FIG. 2 is a side view of an assisted calculation of a measurement method of an acoustic radar measurement system according to an embodiment of the present invention;
fig. 3 is a top view of an auxiliary calculation of a measurement method of an acoustic radar measurement system according to an embodiment of the present invention.
[ detailed description ] of the invention
The present invention will be further described in detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the detailed description and specific examples, while indicating the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention. In addition, in the following description, descriptions of well-known structures and techniques are omitted so as not to unnecessarily obscure the present invention.
Referring to fig. 1, an embodiment of the present invention provides an acoustic radar measurement system, which is characterized in that: the intelligent monitoring device comprises a monitoring device 1, a camera 2, a multichannel signal acquisition module 3, a gyroscope 4, a height sensor 5, a signal processing module 6 and a communication module 7, wherein the monitoring device 1 and the camera 2 are respectively in communication connection with the input end of the multichannel signal acquisition module 3, the output ends of the multichannel signal acquisition module 3, the gyroscope 4 and the height sensor 5 are respectively in communication connection with the signal processing module 6, and the output end of the signal processing module 6 is in communication connection with the communication module 7. The communication module 7 is in communication connection with the snapshot camera 8 and the server 9, and the server 9 is used for receiving and storing illegal evidences. The monitoring device 1 is a microphone array monitoring system, the monitoring device 1 and the camera 2 collect environmental sound sources and videos in real time, and judge whether a whistle event occurs in real time through a voiceprint recognition algorithm of the signal processing module 6. The height sensor 5 is used for detecting the installation position height of the acoustic radar, the gyroscope 4 is used for detecting the pitching inclination angle of the acoustic radar, the signal processing module 6 is internally provided with a sound source positioning algorithm, and the pitch angle and the horizontal angle of the sound source position are extracted through the sound source positioning algorithm. And when the signal processing module 6 judges that a whistling event occurs, the communication module 7 controls the snapshot camera 8 to acquire a sound source target image.
The invention discloses a measuring method of an acoustic radar measuring system, which is characterized by comprising the following steps of: the method comprises the following steps:
step one: the monitoring device 1 and the built-in camera 2 collect environmental sound sources and videos in real time and send the environmental sound sources and videos into the signal processing module 6, the interference of non-whistle time is filtered through a voiceprint recognition algorithm, whether whistle events occur or not is judged in real time, and when the signal processing module 6 judges that the whistle events occur, the communication module 7 controls the snapshot camera 8 to act, so that the collection operation of the sound source target clear images is completed;
step two: the signal processing module 6 is internally provided with a sound source positioning algorithm, so that a pitch angle, a horizontal angle and a sound cloud picture of a sound source target position can be calculated, video evidence is obtained by superposition of the sound cloud picture and video, the height sensor 5 detects the installation position height of the acoustic radar, the gyroscope 4 detects the pitch inclination angle of the acoustic radar, and the detection signals are transmitted to the signal processing module 6;
step three: according to the pitch angle, the horizontal inclination angle and the installation position height of the acoustic radar of the sound source position in the second step, calculating by the signal processing module 6 to obtain the physical address of the sound source target;
step four: the sound source target image acquired in the first step, the video evidence in the second step and the physical address of the sound source target obtained in the third step are combined, the complete law enforcement evidence can be recorded, and a license plate recognition algorithm is built in the snapshot camera 8, so that a specific target vehicle can be obtained.
The calculation formula of the measuring method is as follows:
the meaning of the points in the calculation-aided figures 2 and 3 is:
o point: geometric center of acoustic radar;
s point: physical location of the sound source target;
and D point: a side view coincidence point of the physical position S point of the sound source target;
DE: the height of the sound source target, where de=cf=0.6;
EF: ground level, OC is an auxiliary line parallel to EF;
AB: an acoustic radar acquisition plane;
OI: the vertical normal of the acoustic radar, LH, is an auxiliary line perpendicular to OI;
LHO: a side view of the auxiliary computing surface that remains parallel to the acoustic radar;
the point Q is the intersection point of the auxiliary surface LHO and the OD, and the point J is the intersection point of the auxiliary surface LHO and the OI:
RQO, MNO: a top view of the auxiliary computing surface that remains parallel to the acoustic radar;
the pitching inclination angle BOC obtained through gyroscope detection is calculated as angle beta;
the pitch angle DOI of the sound source target obtained through detection of the sound source positioning algorithm is calculated as the angle alpha;
OF detected by the altitude sensor, where OC counts as h, h=of-0.6;
since OB is perpendicular to OI;
so +.cod = (90 ° - +.β) + +.α;
the method comprises the following steps: dc=oc=tan=h=tan=cod = h is (90 ° - ++α);
the horizontal angle DOS of the sound source target detected by the sound source positioning algorithm is calculated as the angle gamma;
DO＝OC/cos∠COD＝h/cos∠COD；
the method comprises the following steps: ds=do=tan=dos=h/cos =90 degree- (beta+ < alpha) < tan < gamma-
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, or alternatives falling within the spirit and principles of the invention.
Claims (5)
1. An acoustic radar measurement system, characterized by: the intelligent acoustic radar monitoring device comprises a monitoring device (1), a camera (2), a multichannel signal acquisition module (3), a gyroscope (4), a height sensor (5), a signal processing module (6) and a communication module (7), wherein the monitoring device (1) and the camera (2) are respectively in communication connection with the input end of the multichannel signal acquisition module (3), the output ends of the multichannel signal acquisition module (3), the gyroscope (4) and the height sensor (5) are respectively in communication connection with the signal processing module (6), the output end of the signal processing module (6) is in communication connection with the communication module (7), the height sensor (5) is used for detecting the installation position height of an acoustic radar, the gyroscope (4) is used for detecting the pitching angle of the acoustic radar, a sound source positioning algorithm is arranged in the signal processing module (6), and the pitch angle and the horizontal angle of the sound source position are obtained through extraction of the sound source positioning algorithm;
the calculation formula is as follows:
o point: geometric center of acoustic radar;
s point: physical location of the sound source target;
and D point: a side view coincidence point of the physical position S point of the sound source target;
DE: the height of the sound source target, where de=cf=0.6;
EF: ground level, OC is an auxiliary line parallel to EF;
AB: an acoustic radar acquisition plane;
OI: the vertical normal of the acoustic radar, LH, is an auxiliary line perpendicular to OI;
LHO: a side view of the auxiliary computing surface that remains parallel to the acoustic radar;
the point Q is the intersection point of the auxiliary surface LHO and the OD, and the point J is the intersection point of the auxiliary surface LHO and the OI:
RQO, MNO: a top view of the auxiliary computing surface that remains parallel to the acoustic radar;
the pitching inclination angle BOC obtained through gyroscope detection is calculated as angle beta;
the pitch angle DOI of the sound source target obtained through detection of the sound source positioning algorithm is calculated as the angle alpha;
OF detected by the altitude sensor, where OC counts as h, h=of-0.6;
since OB is perpendicular to OI;
so +.cod = (90 ° - +.β) + +.α;
the method comprises the following steps: dc=oc=tan=h=tan=cod = h is (90 ° - ++α);
the horizontal angle DOS of the sound source target detected by the sound source positioning algorithm is calculated as the angle gamma;
DO =OC / cos∠COD = h / cos∠COD；
the method comprises the following steps: ds=do=tan=dos=h/cos =90 beta + alpha) tan gamma.
2. An acoustic radar measurement system according to claim 1, wherein: the communication module (7) is in communication connection with the snapshot camera (8) and the server (9), and the server (9) is used for receiving and storing illegal evidences.
3. An acoustic radar measurement system according to claim 1, wherein: the monitoring device (1) is a microphone array monitoring system, the monitoring device (1) and the camera (2) collect environmental sound sources and videos in real time, and whether a whistle event occurs or not is judged in real time through a voiceprint recognition algorithm of the signal processing module (6).
4. An acoustic radar measurement system according to claim 2, wherein: and when the signal processing module (6) judges that a whistling event occurs, the communication module (7) controls the snapshot camera (8) to acquire a sound source target image.
5. A measurement method of an acoustic radar measurement system according to any one of claims 1 to 4, characterized in that: the method comprises the following steps:
step one: the monitoring device (1) and the built-in camera (2) collect an environmental sound source and a video in real time, send the environmental sound source and the video into the signal processing module (6), filter interference of non-whistle time through a voiceprint recognition algorithm, judge whether a whistle event occurs in real time, and control the snapshot camera (8) to act through the communication module (7) when the signal processing module (6) judges that the whistle event occurs, so as to complete collection operation of a sound source target clear image;
step two: the signal processing module (6) is internally provided with a sound source positioning algorithm, a pitch angle, a horizontal angle and a sound cloud picture of a sound source target position can be calculated, video evidence is obtained by superposition of the sound cloud picture and video, the height sensor (5) detects the installation position height of the acoustic radar, the gyroscope (4) detects the pitch dip angle of the acoustic radar, and the detection signals are transmitted to the signal processing module (6);
step three: according to the pitch angle, the horizontal inclination angle and the installation position height of the acoustic radar of the sound source position in the second step, calculating by a signal processing module (6) to obtain the physical address of the sound source target;
step four: the sound source target image acquired in the first step, the video evidence in the second step and the physical address of the sound source target obtained in the third step are combined, the complete law enforcement evidence can be recorded, and a license plate recognition algorithm is built in the snapshot camera (8) to obtain a specific target vehicle.
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