CN111445691A - Hidden intersection pedestrian detection, identification and early warning method and system - Google Patents
Hidden intersection pedestrian detection, identification and early warning method and system Download PDFInfo
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- CN111445691A CN111445691A CN202010258926.6A CN202010258926A CN111445691A CN 111445691 A CN111445691 A CN 111445691A CN 202010258926 A CN202010258926 A CN 202010258926A CN 111445691 A CN111445691 A CN 111445691A
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- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/005—Traffic control systems for road vehicles including pedestrian guidance indicator
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
- G06V40/103—Static body considered as a whole, e.g. static pedestrian or occupant recognition
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/18—Status alarms
- G08B21/24—Reminder alarms, e.g. anti-loss alarms
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B25/00—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B7/00—Signalling systems according to more than one of groups G08B3/00 - G08B6/00; Personal calling systems according to more than one of groups G08B3/00 - G08B6/00
- G08B7/06—Signalling systems according to more than one of groups G08B3/00 - G08B6/00; Personal calling systems according to more than one of groups G08B3/00 - G08B6/00 using electric transmission, e.g. involving audible and visible signalling through the use of sound and light sources
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- 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
- G08G1/0104—Measuring and analyzing of parameters relative to traffic conditions
- G08G1/0125—Traffic data processing
-
- 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
- G08G1/0104—Measuring and analyzing of parameters relative to traffic conditions
- G08G1/0137—Measuring and analyzing of parameters relative to traffic conditions for specific applications
-
- 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
- G08G1/042—Detecting movement of traffic to be counted or controlled using inductive or magnetic detectors
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- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/09—Arrangements for giving variable traffic instructions
- G08G1/095—Traffic lights
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- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/16—Anti-collision systems
- G08G1/166—Anti-collision systems for active traffic, e.g. moving vehicles, pedestrians, bikes
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
- G10L25/00—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00
- G10L25/48—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 specially adapted for particular use
- G10L25/51—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 specially adapted for particular use for comparison or discrimination
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- 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
Abstract
The invention discloses a method and a system for detecting, identifying and early warning pedestrians at a concealed intersection, wherein the method comprises the following steps: acquiring whether vehicles exist in a preset range in front of a road or not; acquiring whether pedestrians exist at the intersection; the method comprises the following steps that a first early warning signal is sent out under the condition that pedestrians exist at an intersection; and sending a second early warning signal under the condition that vehicles exist at the intersection. The method solves the problems that the hidden road junction in the prior art generally has the phenomena of no mixed running, unclear identification, lack of control and the like, and the driving death rate of pedestrians and non-motor vehicles is high.
Description
Technical Field
The invention relates to the technical field of intelligent traffic, in particular to a method and a system for detecting, identifying and early warning pedestrians at a hidden intersection.
Background
Some hidden intersections in cities and intersections of road branches and main roads are often not controlled by signal lamps, and accidents often occur due to the fact that the main roads are high in speed and the observation range of drivers is limited. The intersections generally have the phenomena of no mixed running, unclear identification, lack of control and the like, and the driving and riding death rate of pedestrians and non-motor vehicles is high.
Therefore, the invention provides a method and a system for detecting, identifying and early warning pedestrians at a hidden intersection, which can effectively ensure the safety of the pedestrians at the hidden intersection without influencing normal traffic operation in the using process.
Disclosure of Invention
Aiming at the technical problems, the invention aims to overcome the problems that the phenomena of no-mixed running, unclear identification, lack of control and the like generally exist at a hidden intersection in the prior art, and the death rate of pedestrians and non-motor vehicles during driving is high, thereby providing a method and a system for detecting, identifying and early warning pedestrians at the hidden intersection, which can effectively ensure the safety of the pedestrians at the hidden intersection under the condition of not influencing normal traffic operation in the using process.
In order to achieve the purpose, the invention provides a method for detecting, identifying and early warning pedestrians at a concealed intersection, which comprises the following steps:
acquiring whether vehicles exist in a preset range in front of a road or not;
acquiring whether pedestrians exist at the intersection; wherein the content of the first and second substances,
sending a first early warning signal under the condition that a pedestrian exists at the intersection;
and sending a second early warning signal under the condition that vehicles exist at the intersection.
Preferably, the first warning signal uses a warning light signal; wherein the content of the first and second substances,
under the condition that pedestrians exist at the intersection, the warning light signal is changed from a green light state to a red light state; otherwise, the warning light signal keeps a green light state.
Preferably, the second warning signal uses a voice signal.
Preferably, whether a vehicle exists in the preset range in front of the road or not is judged by acquiring image information in the preset range in front of the road;
whether pedestrians exist at the intersection or not is judged by acquiring image information in the range of the intersection and/or acquiring human body induction signals.
Preferably, the method further comprises:
and acquiring sound signals of the intersection, and sending accident alarm signals and video information of the current intersection to a background server when the sound signals comprise collision sound signals.
Preferably, the system comprises:
the vehicle information acquisition module is used for acquiring whether vehicles exist in a preset range in front of a road or not;
the pedestrian information acquisition module is used for acquiring whether pedestrians exist at the intersection;
the first early warning module is used for sending a first early warning signal under the condition that a pedestrian exists at the intersection;
and the second early warning module is used for sending out a second early warning signal under the condition that vehicles exist at the intersection.
Preferably, the first early warning module is a warning lamp; wherein the content of the first and second substances,
under the condition that pedestrians exist at the intersection, the warning light signal is changed from a green light state to a red light state; otherwise, the warning light signal keeps a green light state.
Preferably, the second early warning module is a voice broadcast device and is used for sending voice prompt information to pedestrians.
Preferably, the vehicle information acquisition module includes:
the first image acquisition unit is used for acquiring image information in a preset range in front of a road;
the pedestrian information acquisition module includes:
the second image acquisition unit is used for acquiring image information in the intersection range;
and the human body proximity sensor is used for acquiring human body induction signals within the range of the intersection.
Preferably, the system further comprises:
the sound detection module is used for acquiring sound signals of the intersection;
the alarm module is used for sending an accident alarm signal when the sound signal comprises a collision sound signal;
and the wireless communication module is used for carrying out information transmission with a background server so as to send the accident alarm signal and the video information of the current intersection to the background server.
According to the technical scheme, the method for detecting, identifying and early warning the pedestrians at the concealed intersection has the beneficial effects that: the time for sending out the first early warning signal and the second early warning signal is respectively controlled by acquiring the vehicle information in front of the road and the pedestrian information at the intersection, so that the driving vehicles and the pedestrians at the intersection are effectively early warned, and traffic accidents occur; the problems that the phenomena of no mixed running, unclear identification, lack of control and the like generally exist at a hidden intersection in the prior art, and the driving death rate of pedestrians and non-motor vehicles is high are solved.
Additional features and advantages of the invention will be set forth in the detailed description which follows.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a block flow diagram of a method for detecting, identifying and warning pedestrians at a hidden intersection according to a preferred embodiment of the present invention;
fig. 2 is a block diagram of a hidden intersection pedestrian detection, identification and early warning system provided in a preferred embodiment of the present invention.
Description of the reference numerals
1 vehicle information acquisition module 2 pedestrian information acquisition module
3 first early warning module 4 second early warning module
Detailed Description
The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.
As shown in fig. 1, the invention provides a method for detecting, identifying and warning pedestrians at a concealed intersection, which comprises the following steps:
acquiring whether vehicles exist in a preset range in front of a road or not;
acquiring whether pedestrians exist at the intersection; wherein the content of the first and second substances,
sending a first early warning signal under the condition that a pedestrian exists at the intersection;
and sending a second early warning signal under the condition that vehicles exist at the intersection.
In the scheme, the invention can be used for early warning pedestrians at the intersection by detecting whether vehicles exist in a preset range in front of the road or not, and early warning vehicles on the road by detecting whether pedestrians exist at the intersection or not, when pedestrians exist at the intersection, a first early warning signal can be sent out no matter whether vehicles drive in or not, so that the following vehicles are prevented from driving in, and therefore, the safety of the pedestrians is protected, and when the vehicles drive in, a second early warning signal can be sent out no matter whether pedestrians exist at the intersection, so that the later pedestrians are reminded of driving in, and the alert state is kept.
In a preferred embodiment of the present invention,
the first early warning signal uses a warning light signal; wherein the content of the first and second substances,
under the condition that pedestrians exist at the intersection, the warning light signal is changed from a green light state to a red light state; otherwise, the warning light signal keeps a green light state.
In the above scheme, the first warning signal is sent by using a warning light signal, for example, when a pedestrian is detected in the range of the intersection, the warning light signal is changed from a green light to a red light, and at this time, effective warning information is sent to the vehicle coming, and the driver sees that the red light can be intrinsically decelerated to allow the vehicle to run.
In a preferred embodiment of the invention, the second warning signal uses a speech signal.
In the scheme, the voice signal can effectively warn pedestrians at the intersection, tell the pedestrians that vehicles enter the intersection and remind the pedestrians to observe the intersection situation to safely pass through the intersection, for example, the voice signal can broadcast 'vehicles enter and exit, and pedestrians pay attention to safety' to achieve the effect of reminding pedestrians.
In a preferred embodiment of the present invention, the obtaining of whether there is a vehicle in the predetermined range in front of the road is determined by obtaining image information in the predetermined range in front of the road;
whether pedestrians exist at the intersection or not is judged by acquiring image information in the range of the intersection and/or acquiring human body induction signals.
In the above scheme, the acquisition of the vehicle may be determined by image information, for example, acquiring the image information by using a high-definition camera, and then performing intelligent identification on the acquired image to determine whether a "vehicle" exists in the image; the intelligent video detector for the slow traffic can be used for image acquisition, the requirements of high-definition image quality and dark scene application can be met, and the ICR infrared filter disc type automatic switching is realized so as to realize real day and night monitoring.
Whether pedestrians exist at the intersection or not can also be acquired by adopting an image acquisition mode, and the equipment and the method are the same as those for acquiring the vehicles; the pedestrians can be judged by adopting a mode of acquiring human body induction signals, for example, a human body proximity sensor is utilized, the detection sensitivity is high, the detection range is wide, the operation is very reliable, no false alarm is generated generally, the pedestrian can stably operate within the temperature range of-15 to +60 ℃ based on the Doppler technical principle, an alarm circuit consisting of infrared rays, ultrasonic waves and pyroelectric elements and a conventional microwave circuit cannot be compared, and the pedestrian safety monitoring system is the best product for safety precaution and automatic monitoring at present; and a thermal infrared human body sensor can be adopted, and whether pedestrians exist at the intersection can be effectively detected.
In a preferred embodiment of the present invention, the method further comprises:
and acquiring sound signals of the intersection, and sending accident alarm signals and video information of the current intersection to a background server when the sound signals comprise collision sound signals.
In the scheme, besides the image acquisition, the sound information of the intersection is also acquired, because the sound information of the collision is different from other sounds, such as the whistle of a vehicle, and the like, the sound of the collision can be effectively identified in the prior art. The staff in the background is passed through at the first time, so that accident treatment and staff rescue are carried out at the first time. The video information is convenient for background workers to judge whether a traffic accident occurs more accurately so as to avoid misjudgment.
As shown in fig. 2, the invention also provides a system for detecting, identifying and warning pedestrians at a concealed intersection, which comprises:
the vehicle information acquisition module 1 is used for acquiring whether a vehicle exists in a preset range in front of a road;
the pedestrian information acquisition module 2 is used for acquiring whether pedestrians exist at the intersection;
the first early warning module 3 is used for sending out a first early warning signal under the condition that a pedestrian exists at the intersection;
and the second early warning module 4 is used for sending out a second early warning signal under the condition that vehicles exist at the intersection.
In the scheme, the invention can be used for early warning pedestrians at the intersection by detecting whether vehicles exist in a preset range in front of the road or not, and early warning vehicles on the road by detecting whether pedestrians exist at the intersection or not, when pedestrians exist at the intersection, a first early warning signal can be sent out no matter whether vehicles drive in or not, so that the following vehicles are prevented from driving in, and therefore, the safety of the pedestrians is protected, and when the vehicles drive in, a second early warning signal can be sent out no matter whether pedestrians exist at the intersection, so that the later pedestrians are reminded of driving in, and the alert state is kept.
In a preferred embodiment of the present invention, the first warning module 3 is a warning light; wherein the content of the first and second substances,
under the condition that pedestrians exist at the intersection, the warning light signal is changed from a green light state to a red light state; otherwise, the warning light signal keeps a green light state.
In the above scheme, the first warning signal is sent by using a warning light signal, for example, when a pedestrian is detected in the range of the intersection, the warning light signal is changed from a green light to a red light, and at this time, effective warning information is sent to the vehicle coming, and the driver sees that the red light can be intrinsically decelerated to allow the vehicle to run.
In a preferred embodiment of the present invention, the second warning module 4 is a voice broadcaster, and is configured to send voice prompt information to a pedestrian.
In the scheme, the voice signal can effectively warn pedestrians at the intersection, tell the pedestrians that vehicles enter the intersection and remind the pedestrians to observe the intersection situation to safely pass through the intersection, for example, the voice signal can broadcast 'vehicles enter and exit, and pedestrians pay attention to safety' to achieve the effect of reminding pedestrians.
In a preferred embodiment of the present invention, the vehicle information acquisition module 1 includes:
the first image acquisition unit is used for acquiring image information in a preset range in front of a road;
the pedestrian information acquisition module includes:
the second image acquisition unit is used for acquiring image information in the intersection range;
and the human body proximity sensor is used for acquiring human body induction signals within the range of the intersection.
In the above scheme, the acquisition of the vehicle may be determined by image information, for example, acquiring the image information by using a high-definition camera, and then performing intelligent identification on the acquired image to determine whether a "vehicle" exists in the image; the intelligent video detector for the slow traffic can be used for image acquisition, the requirements of high-definition image quality and dark scene application can be met, and the ICR infrared filter disc type automatic switching is realized so as to realize real day and night monitoring.
Whether pedestrians exist at the intersection or not can also be acquired by adopting an image acquisition mode, and the equipment and the method are the same as those for acquiring the vehicles; the pedestrians can be judged by adopting a mode of acquiring human body induction signals, for example, a human body proximity sensor is utilized, the detection sensitivity is high, the detection range is wide, the operation is very reliable, no false alarm is generated generally, the pedestrian can stably operate within the temperature range of-15 to +60 ℃ based on the Doppler technical principle, an alarm circuit consisting of infrared rays, ultrasonic waves and pyroelectric elements and a conventional microwave circuit cannot be compared, and the pedestrian safety monitoring system is the best product for safety precaution and automatic monitoring at present; and a thermal infrared human body sensor can be adopted, and whether pedestrians exist at the intersection can be effectively detected.
In a preferred embodiment of the present invention, the system further comprises:
the sound detection module is used for acquiring sound signals of the intersection;
the alarm module is used for sending an accident alarm signal when the sound signal comprises a collision sound signal;
and the wireless communication module is used for carrying out information transmission with a background server so as to send the accident alarm signal and the video information of the current intersection to the background server.
In the scheme, besides the image acquisition, the sound information of the intersection is also acquired, because the sound information of the collision is different from other sounds, such as the whistle of a vehicle, and the like, the sound of the collision can be effectively identified in the prior art. The staff in the background is passed through at the first time, so that accident treatment and staff rescue are carried out at the first time. The video information is convenient for background workers to judge whether a traffic accident occurs more accurately so as to avoid misjudgment.
In summary, the method and the system for detecting, identifying and warning pedestrians at the concealed intersection provided by the invention have the beneficial effects that: the time for sending out the first early warning signal and the second early warning signal is respectively controlled by acquiring the vehicle information in front of the road and the pedestrian information at the intersection, so that the driving vehicles and the pedestrians at the intersection are effectively early warned, and traffic accidents occur; the problems that the phenomena of no mixed running, unclear identification, lack of control and the like generally exist at a hidden intersection in the prior art, and the driving death rate of pedestrians and non-motor vehicles is high are solved.
The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, however, the present invention is not limited to the specific details of the above embodiments, and various simple modifications can be made to the technical solution of the present invention within the technical idea of the present invention, and these simple modifications are within the protective scope of the present invention.
It should be noted that the various technical features described in the above embodiments can be combined in any suitable manner without contradiction, and the invention is not described in any way for the possible combinations in order to avoid unnecessary repetition.
In addition, any combination of the various embodiments of the present invention is also possible, and the same should be considered as the disclosure of the present invention as long as it does not depart from the spirit of the present invention.
Claims (10)
1. A hidden intersection pedestrian detection, identification and early warning method is characterized by comprising the following steps:
acquiring whether vehicles exist in a preset range in front of a road or not;
acquiring whether pedestrians exist at the intersection; wherein the content of the first and second substances,
sending a first early warning signal under the condition that a pedestrian exists at the intersection;
and sending a second early warning signal under the condition that vehicles exist at the intersection.
2. The hidden intersection pedestrian detection, identification and early warning method of claim 1,
the first early warning signal uses a warning light signal; wherein the content of the first and second substances,
under the condition that pedestrians exist at the intersection, the warning light signal is changed from a green light state to a red light state; otherwise, the warning light signal keeps a green light state.
3. The hidden intersection pedestrian detection, identification and early warning method of claim 1, characterized in that the second early warning signal uses a voice signal.
4. The hidden intersection pedestrian detection, identification and early warning method of claim 1,
whether a vehicle exists in the preset range in front of the road is judged by acquiring image information in the preset range in front of the road;
whether pedestrians exist at the intersection or not is judged by acquiring image information in the range of the intersection and/or acquiring human body induction signals.
5. The hidden intersection pedestrian detection, identification and early warning method of claim 1, further comprising:
and acquiring sound signals of the intersection, and sending accident alarm signals and video information of the current intersection to a background server when the sound signals comprise collision sound signals.
6. A hidden intersection pedestrian detection, identification and early warning system, characterized in that the system comprises:
the vehicle information acquisition module is used for acquiring whether vehicles exist in a preset range in front of a road or not;
the pedestrian information acquisition module is used for acquiring whether pedestrians exist at the intersection;
the first early warning module is used for sending a first early warning signal under the condition that a pedestrian exists at the intersection;
and the second early warning module is used for sending out a second early warning signal under the condition that vehicles exist at the intersection.
7. The hidden intersection pedestrian detection, identification and early warning system of claim 6, wherein the first early warning module is a warning light; wherein the content of the first and second substances,
under the condition that pedestrians exist at the intersection, the warning light signal is changed from a green light state to a red light state; otherwise, the warning light signal keeps a green light state.
8. The hidden intersection pedestrian detection, identification and early warning system of claim 6, wherein the second early warning module is a voice announcer for sending voice prompt information to pedestrians.
9. The hidden intersection pedestrian detection, identification and early warning system of claim 6,
the vehicle information acquisition module includes:
the first image acquisition unit is used for acquiring image information in a preset range in front of a road; the pedestrian information acquisition module includes:
the second image acquisition unit is used for acquiring image information in the intersection range;
and the human body proximity sensor is used for acquiring human body induction signals within the range of the intersection.
10. The hidden intersection pedestrian detection, identification and early warning system of claim 6, further comprising:
the sound detection module is used for acquiring sound signals of the intersection;
the alarm module is used for sending an accident alarm signal when the sound signal comprises a collision sound signal;
and the wireless communication module is used for carrying out information transmission with a background server so as to send the accident alarm signal and the video information of the current intersection to the background server.
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| CN113299317A (en) * | 2021-05-14 | 2021-08-24 | 东南大学 | Intersection collision audio early warning evaluation method based on MFCC feature extraction |
| CN116665154A (en) * | 2023-07-27 | 2023-08-29 | 山东科技大学 | Sensing and early warning method for night road pedestrian traffic event |
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Application publication date: 20200724 |