KR102429956B1 - safety system that provides information about blind spots that occur when driving - Google Patents

Abstract

The present invention relates to a device for providing information on a blind spot for safe driving, and also to a safety system for providing information on a blind spot that occurs when driving.
In addition, the present invention relates to a vehicle identification and warning system, and more particularly, based on at least one of a camera and a sensor, an approaching vehicle and an area out of the field of view of a driver of the vehicle are identified, and information obtained based on this is identified It is about a system that outputs.

Description

Safety system that provides information about blind spots that occur when driving

The present invention relates to a device for providing information on a blind spot for safe driving, and also to a safety system for providing information on a blind spot that occurs when driving.

In addition, the present invention relates to a vehicle identification and warning system, and more particularly, based on at least one of a camera and a sensor, an approaching vehicle and an area out of the field of view of a driver of the vehicle are identified, and information obtained based on this is identified It is about a system that outputs.

Advanced Driver Assistance Systems (ADAS) are systems that assist drivers in driving. ADAS' Human-Machine Interface (HMI) reduces driver fatigue and promotes safe driving.

The advanced driver assistance system accelerates the vehicle to a certain speed and then operates cruise control, which allows the vehicle to drive at a specified speed without pressing the accelerator pedal, and lane departure without the driver's intention to change lanes (turn indicators). There are several types, such as Lane Departure Warning System (LDWS) and Pedestrian Protection System (Pedestrian Protection System), which raise a warning when the vehicle is detected.

However, since these advanced driver assistance systems are inherently mounted inside a vehicle, they are only applicable to drivers of vehicles equipped with advanced technologies, and there is a limit in that they are difficult to apply universally to a large number of drivers. In addition, in the case of an accident between a vehicle and a pedestrian, although the pedestrian is at a higher risk of injury or death, the above-described advanced driver assistance systems also have a limitation in that the pedestrian does not actively avoid the dangerous vehicle.

Therefore, there is a need for a system that identifies and warns a vehicle on a road or sidewalk, not inside a vehicle, so that drivers of vehicles not equipped with advanced driver assistance systems or pedestrians on the street can universally promote driving safety and risk avoidance. do. The need for such a system is particularly pronounced in environments where the driver's visibility may be limited or attention may be reduced, such as corner areas, hilly areas, shoulder roads, and unprotected lanes.

An object of the present invention for solving the above problems is to provide a vehicle identification and warning system.

The technical problems to be achieved in the present invention are not limited to the technical problems mentioned above, and other technical problems not mentioned will be clearly understood by those of ordinary skill in the art to which the present invention belongs from the description below. will be able

The present invention for achieving the above object provides an apparatus for providing information on blind spots for safe driving.

The vehicle identification and warning system includes: an identification unit including at least one of at least one camera and at least one sensor; and an output unit for outputting the information obtained by the identification unit, wherein the identification unit includes: a first identification device for identifying an approaching vehicle; and a second identification device for identifying an area where the driver's view of the vehicle does not reach, wherein the output unit includes: information related to the vehicle's approach; and outputting information related to an area where the driver's field of view does not reach, and the information related to the approach of the vehicle is an image indicating the approach of the vehicle, a voice message notifying the approach of the vehicle, and warning of the approach of the vehicle The information related to the area out of the driver's field of view includes at least one of a warning sound, and the information related to the area out of the driver's field of view is an image indicating the area out of the driver's field of view, the presence of a pedestrian or other vehicle in relation to the area out of the driver's field of view and at least one of a voice message for notifying the user, and a warning sound for warning of the presence of the pedestrian or the other vehicle.

The information related to the approach of the vehicle may further include information related to the speed of the vehicle.

The information related to the speed of the vehicle may display different types of information according to which range the speed of the vehicle has a value. The information related to the speed of the vehicle may be characterized in that different types of information are displayed based on the speed of the vehicle corresponding to a specific speed range among a plurality of speed ranges.

When the vehicle identification and warning system relates to a right-turn lane, an area out of sight of a driver of the vehicle may correspond to a right-turn corner area.

When the vehicle identification and warning system relates to a hilly area, an area out of sight of the driver of the vehicle may correspond to an area in which the hill road changes from uphill to downhill.

The at least one sensor may include a microwave sensor; infrared sensor; and at least one of an acoustic sensor.

The output unit may output a voice message or a warning sound using a speaker.

The output unit may output an image using a display device.

By using the vehicle identification and warning system according to the present invention, the driver and pedestrian of the vehicle can promote driving safety and risk avoidance. In conclusion, it is possible to prevent a vehicle accident by giving drivers and pedestrians time to respond to danger, and even if a vehicle accident occurs, the magnitude of the damage can be minimized.

The effects obtainable in the present invention are not limited to the above-mentioned effects, and other effects not mentioned may be clearly understood by those of ordinary skill in the art from the following description. will be.

Other aspects, features and benefits as described above of certain preferred embodiments of the present invention will become more apparent from the following description taken in conjunction with the accompanying drawings.
1A and 1B are conceptual views of a vehicle identification and warning system according to an embodiment of the present invention.
2 is an exemplary diagram illustrating a method of operating a vehicle identification and warning system in a right turn situation according to an embodiment of the present invention.
3 is an exemplary diagram illustrating a method of operating a vehicle identification and warning system on a hill road according to an embodiment of the present invention.
4 is an exemplary diagram illustrating a method in which a plurality of vehicle identification and warning systems operate in conjunction with each other according to an embodiment of the present invention.
5 is a diagram for explaining a frequency waveform according to an embodiment of the present invention.
It should be noted that throughout the drawings, like reference numerals are used to denote the same or similar elements, features, and structures.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

In describing the embodiments, descriptions of technical contents that are well known in the technical field to which the present invention pertains and are not directly related to the present invention will be omitted. This is to more clearly convey the gist of the present invention by omitting unnecessary description.

For the same reason, some components are exaggerated, omitted, or schematically illustrated in the accompanying drawings. In addition, the size of each component does not fully reflect the actual size. In each figure, the same or corresponding elements are assigned the same reference numerals.

Advantages and features of the present invention, and a method of achieving them will become apparent with reference to the embodiments described below in detail in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but may be implemented in various different forms, and only these embodiments allow the disclosure of the present invention to be complete, and common knowledge in the art to which the present invention pertains. It is provided to fully inform the possessor of the scope of the invention, and the present invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout.

At this time, it will be understood that each block of the flowchart diagrams and combinations of the flowchart diagrams may be performed by computer program instructions. These computer program instructions may be embodied in a processor of a general purpose computer, special purpose computer, or other programmable data processing equipment, such that the instructions performed by the processor of the computer or other programmable data processing equipment are not described in the flowchart block(s). It creates a means to perform functions. These computer program instructions may also be stored in a computer-usable or computer-readable memory that may direct a computer or other programmable data processing equipment to implement a function in a particular manner, and thus the computer-usable or computer-readable memory. It is also possible for the instructions stored in the flowchart block(s) to produce an article of manufacture containing instruction means for performing the function described in the flowchart block(s). The computer program instructions may also be mounted on a computer or other programmable data processing equipment, such that a series of operational steps are performed on the computer or other programmable data processing equipment to create a computer-executed process to create a computer or other programmable data processing equipment. It is also possible that instructions for performing the processing equipment provide steps for performing the functions described in the flowchart block(s).

In addition, each block may represent a module, segment, or portion of code that includes at least one executable instructions for executing specified logical function(s). It should also be noted that in some alternative implementations it is also possible for the functions recited in the blocks to occur out of order. For example, it is possible that two blocks shown in succession are actually performed substantially simultaneously, or that the blocks are sometimes performed in the reverse order according to the corresponding function.

In this case, the term '~ unit' used in this embodiment means software or hardware components such as field-programmable gate array (FPGA) or ASIC (Application Specific Integrated Circuit), and '~ unit' refers to what role carry out the However, '-part' is not limited to software or hardware. '~unit' may be configured to reside on an addressable storage medium or may be configured to refresh one or more processors. Thus, as an example, '~' denotes components such as software components, object-oriented software components, class components, and task components, and processes, functions, properties, and procedures. , subroutines, segments of program code, drivers, firmware, microcode, circuitry, data, databases, data structures, tables, arrays, and variables. The functions provided in the components and '~ units' may be combined into a smaller number of components and '~ units' or further separated into additional components and '~ units'. In addition, components and '~ units' may be implemented to play one or more CPUs in a device or secure multimedia card.

In describing embodiments of the present invention in detail, an example of a specific system will be the main subject, but the main subject matter to be claimed in this specification is to extend the scope disclosed herein to other communication systems and services having a similar technical background. It can be applied within a range that does not deviate significantly, and this will be possible at the discretion of a person with technical knowledge skilled in the art.

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1A and 1B are conceptual views of a vehicle identification and warning system according to an embodiment of the present invention.

Referring to FIG. 1A , a vehicle identification and warning system 100 according to an embodiment of the present invention is a system including an identification unit 110 and an output unit 120 , and identifies an approaching vehicle, and identifies an approaching vehicle. It is a system that identifies an area that the driver's field of view cannot reach, and outputs information related to vehicle approach and information related to an area where the driver's field of view cannot be reached. The vehicle identification and warning system 100 according to an embodiment of the present invention may be referred to as a smart traffic system, an IoT traffic sign, a traffic information monitoring system (and/or device), or the like.

Referring to FIG. 1B , the identification unit 110 includes a camera unit 1110 including at least one camera and a sensor unit 1120 including at least one sensor. In FIG. 2 , one camera 220 and one sensor 230 are installed in the vehicle identification and warning system 100 for convenience of design and description, but as another example, the sensor unit 1120 . may include a plurality of sensors, and the camera unit 1110 may include a plurality of cameras. Also, the camera unit 1110 may include only at least one camera, or the sensor unit 1120 may include only at least one sensor (ie, one of the camera and the sensor may not be included).

The identification unit 110 includes a first identification device for identifying the approaching vehicle 300 and a second identification device for identifying an area that does not reach the driver's view of the vehicle 300 (and/or an area out of the driver's field of view). includes As an example, the first identification device may correspond to a sensor that senses a location to which the vehicle may approach, and the second identification device may correspond to a camera that captures an area that the driver's field of view does not reach. However, this is only an example, and the first identification device may correspond to a camera, the second identification device may correspond to a sensor, and even at least one of the first identification device and the second identification device includes at least one camera and at least one camera. It may be a device made up of a combination of sensors.

In addition, the above-mentioned sensors are names that encompass various types of sensors, and are not limited to specific types of sensors. For example, the above-mentioned sensors may include at least one of a microwave sensor, an infrared sensor, a vibration sensor, and an acoustic sensor, and a sensor for sensing other types of information not mentioned. may include.

The output unit 120 outputs information related to the approach of the vehicle and information related to an area to which the driver's field of view does not reach (and/or an area out of the driver's field of view). As an example, when the first identification device corresponds to a sensor that senses a location to which the vehicle 300 can approach, and the second identification device corresponds to a camera that captures an area that the driver's field of view does not reach, the output unit ( 120) outputs a warning sound related to the approach of the vehicle as the approaching vehicle is sensed (eg, the speaker unit 1220), and an image of an area out of the driver's field of view (and/or an area out of the driver's field of view) output (eg, the display unit 1210).

The "information related to vehicle approach" output by the output unit 120 allows a pedestrian or other vehicle located in an area where the driver's view does not reach (and/or an area out of the driver's field of view) to recognize the approach of the vehicle. As to perform a role to enable the vehicle, it includes at least one of an image indicating the approach of the vehicle, a voice message notifying the approach of the vehicle, and a warning sound for warning of the approach of the vehicle. can do. For example, when the vehicle approaches within a predetermined value (eg, 10 m), the output unit 120 may detect a pedestrian or other vehicle located in an area out of the driver's field of view (and/or in an area outside the driver's field of view). It is possible to output an image in a form with good identification so that it can be recognized. Similarly, a voice message notifying the approach of the vehicle or a warning sound warning of the approach of the vehicle may also be outputted using a specific frequency with good identification or a volume higher than a certain level so that it can be easily recognized.

"Information related to the area out of the driver's field of view (and/or the area out of the driver's field of view)" output by the output unit 120 allows the driver of an approaching vehicle to obtain an area out of the driver's field of view (and/or An image that serves to recognize the presence of a pedestrian or other vehicle located in an area outside the driver's field of view), and displays an area out of the driver's field of view (and/or an area outside the driver's field of view); and at least one of a voice message notifying the presence of a pedestrian or other vehicle in relation to an area out of the driver's field of view (and/or an area outside the driver's field of view), and an audible warning sound to warn of the presence of the pedestrian or other vehicle. In this case, as well as information related to the approach of the vehicle, a video indicating an area out of the driver's field of view (and/or an area out of the driver's field of view), a voice message announcing the presence of a pedestrian or other vehicle, and a pedestrian or A warning sound for warning the presence of another vehicle may be output in a form that is easy to identify.

The speaker unit 1220 may output a voice message or a warning sound using a speaker, and the display unit 1210 may output an image using a display device.

For example, the information related to the approach of the vehicle 300 may further include information related to the speed of the vehicle 300 approaching the vehicle identification and warning system 100 (and/or the identification unit 110 ). . For example, the speaker unit 1220 may output a voice message notifying the approach of the vehicle 300 such as "the vehicle is approaching at a speed of 22 km/h". As another example, the display unit 1210 may further display the speed of the vehicle 300 in the image outputting the approach of the vehicle 300 .

For example, when the information related to the approach of the vehicle 300 further includes information related to the speed of the vehicle 300 approaching the vehicle identification and warning system 100 (and/or the identification unit 110), The output unit 120 may display different types of information according to which range the speed of the vehicle 300 has.

For example, the display unit 1210 may display the vehicle identification and warning system 100 (and/or identification) when the predetermined boundary values are 20 km/h and 40 km/h, and the vehicle 300 moves at a speed lower than 20 km/h. When approaching the unit 110), the speed of the vehicle 300 is displayed in green on the image outputting the approach of the vehicle 300, and when approaching at a speed between 20 km/h and 40 km/h, the vehicle 300 ) may be displayed in yellow, and when approaching at a speed higher than 40 km/h, the speed of the vehicle 300 may be displayed in red.

As another example, the speaker unit 1220, when the predetermined boundary values are 20 km/h and 40 km/h, the vehicle 300 is the vehicle identification and warning system 100 at a speed lower than 20 km/h (and/or identification When approaching the unit 110), a voice message of 50 dB is output, when approaching at a speed between 20 km/h and 40 km/h, a voice message of 60 dB is output, and when approaching at a speed higher than 40 km/h, 70 dB may be set to output a voice message of

For example, the vehicle identification and warning system 100 may be further associated with various traffic information. As an example, the identification unit 110 detects at least one of signal information related to the lane of the approaching vehicle 300 and signal information related to an area out of the driver's field of view (and/or an area out of the driver's field of view). It may be further identified, and the output unit 120 may output signal information related to the lane of the approaching vehicle 300 and signal information related to an area out of the driver's field of view (and/or an area out of the driver's field of view). Further output at least one, or further consider at least one of signal information related to the lane of the approaching vehicle 300 and signal information related to an area out of the driver's field of view (and/or an area out of the driver's field of view) to determine the type of information to be output.

A more detailed example of how the vehicle identification and warning system 100 is further associated with various traffic information is described with reference to FIGS. 2 to 4 .

The vehicle identification and warning system 100 according to an embodiment may be utilized in various environments. The vehicle identification and warning system 100 may be particularly effectively utilized in an environment in which the driver's field of vision may be limited or the driver's attention may be reduced. For example, the vehicle identification and warning system 100 may maximize its utility in environments such as a corner area, a hill area, a shoulder road, and an unprotected lane.

Hereinafter, embodiments in which the vehicle identification and warning system 100 is utilized in various environments with reference to FIGS. 2 to 4 will be described.

2 is an exemplary diagram illustrating a method of operating a vehicle identification and warning system in a right turn situation according to an embodiment of the present invention.

Referring to FIG. 2 , the vehicle identification and warning system 100 according to an exemplary embodiment may be used at a right turn corner. In this case, the first identification device for identifying the approaching vehicle 300 identifies a right-turn lane, and identifies an area out of the driver's view of the vehicle 300 (and/or an area out of the driver's field of view). 2 The identification device may identify the right corner 210 . In addition, the output unit 120 outputs information related to the approach of the vehicle 300 so that a pedestrian or other vehicle located in the right corner 210 can recognize it, and outputs information related to the right corner 210 to the vehicle 300 . It can be output to be recognized by the driver of

As described above, the vehicle identification and warning system 100 according to an embodiment may be further associated with various types of traffic information. For example, when the vehicle identification and warning system 100 is used at a right turn corner, the vehicle and warning system 100 may further consider at least one of a signal of a vehicle traffic light and a signal of a crosswalk. For example, the second identification device may identify the crosswalk in the right corner 210 and output information related to the signal of the crosswalk so that the driver of the vehicle 300 can recognize it. In this case, when the signal of the crosswalk at the right corner 210 is green light, the vehicle 300 must not turn right until the signal of the crosswalk changes to a red light, so the output unit 120 is a warning sound or the meaning of a warning may be output to the driver of the vehicle 300 . Alternatively, if there is a pedestrian crossing the crosswalk when the signal of the crosswalk at the right corner 210 is a red light, the output unit 120 further increases the identification of information related to the approach of the vehicle 300 (eg, more high volume sound, etc.) can be output to pedestrians.

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3 is an exemplary diagram illustrating a method of operating the vehicle identification and warning system 100 on a hill road according to an embodiment of the present invention.

Referring to FIG. 3 , the vehicle identification and warning system 100 according to an embodiment may be used on a hill road. In the case of a hill road, the vehicle 300 approaching from one side based on the highest point of the hill is difficult to identify a vehicle or a pedestrian approaching from the other side. Accordingly, the first identification device for identifying the approaching vehicle 300 identifies the lane 310 in the direction in which the vehicle 300 approaches in the vicinity of the highest point of the hill, and an area where the driver's view of the vehicle 300 does not reach. The second identification device 400 for identifying (and/or an area outside the driver's field of view) may identify an area 320 ('blind area') opposite the direction in which the vehicle 300 is approaching near the highest point of the hill. can In addition, the output unit 120 outputs information related to the approach of the vehicle 300 so that a pedestrian or other vehicle located in an area 320 ('square area') opposite to the direction in which the vehicle 300 approaches can recognize it. and information related to the area 320 opposite to the direction in which the vehicle 300 approaches may be displayed and/or output so that the driver of the vehicle 300 can recognize it.

As described above, the vehicle identification and warning system 100 according to an embodiment of the present invention may be further associated with various types of traffic information. For example, when the vehicle identification and warning system 100 ('signage device') is installed on a hill road, the vehicle and warning system 100 may further consider at least one of a signal of a vehicle traffic light and a signal of a crosswalk. have. For example, if the first identification device identifies a vehicle traffic light in relation to the lane 310 in the direction in which the vehicle 300 approaches, and the vehicle 300 violates the signal, the output unit 120 outputs the vehicle on approach. A warning may be displayed and/or outputted to be recognized by both the pedestrians and other vehicles located in the area 320 opposite to the 300 and the direction in which the vehicle 300 approaches.

Alternatively, the second identification device identifies the vehicle traffic light with respect to the area 320 opposite to the direction in which the vehicle 300 approaches, and another vehicle approaching from the area 320 opposite to the direction in which the vehicle 300 approaches is detected. Even when the signal is violated, the output unit 120 may output a warning so that both the vehicle 300 on approach and the pedestrian or other vehicle located in the area 320 opposite to the direction in which the vehicle 300 approaches can recognize it. have.

For example, in the case of a hill road (refer to FIGS. 3 and 4 ), the degree of limited visibility may be more severe than that of the right corner 210 in a right turn situation. Also, there may be drivers trying to overtake a vehicle ahead across the opposite lane even though their visibility is very limited. Therefore, in the case of a hill road, vehicle traffic lights can be identified in relation to both the lane 310 in the direction the vehicle approaches and the area 320 opposite the direction in which the vehicle 300 approaches, and any one of them violates the signal. In this case, a warning may be displayed and/or output so that both the approaching vehicle 300 and a pedestrian or other vehicle located in the area 320 opposite to the approaching direction of the vehicle 300 can recognize it.

On the other hand, for a situation in which the degree of visibility restriction is severe and the risk of an accident is particularly high, such as a hill road, a method in which the plurality of vehicle identification and warning systems 100 and 400 are operated in conjunction may be considered. In this regard, an embodiment in which a plurality of vehicle identification and warning systems 100 and 400 are used will be described in more detail by taking a hill road situation as an example in FIG. 4 .

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4 is an exemplary diagram illustrating a method in which a plurality of vehicle identification and warning systems operate in conjunction with each other according to an embodiment of the present invention.

Referring to FIG. 4 , a plurality of vehicle identification and warning systems 100 and 400 according to an embodiment of the present invention may be operated in conjunction. In other words, the vehicle identification and warning system (hereinafter, the first vehicle identification and warning system 100 ) ('first sign apparatus') according to an embodiment of the present invention is another vehicle identification and warning system (hereinafter, the second The vehicle identification and warning system 400) may be operated in conjunction with ('second sign device').

The first vehicle identification and warning system 100 corresponds to the vehicle identification and warning system described with reference to FIGS. 1A to 3 . The second vehicle identification and warning system 400 is also a system including an identification unit 410 and an output unit 420, similar to the vehicle identification and warning system described with reference to FIGS. 1A to 3 , and may perform a similar role. .

However, the first vehicle identification and warning system 100 and the second vehicle identification and warning system 400 may identify approaches of different vehicles (hereinafter, the first vehicle identification and warning system 100 identifies The vehicle will be referred to as vehicle A 300 and the vehicle identified by the second vehicle identification and warning system 400 will be referred to as vehicle B 500 ). In other words, the first identification device of the first vehicle identification and warning system 100 identifies vehicle A 300 , and the first identification device of the second vehicle identification and warning system 400 identifies vehicle B 500 . can be identified.

In addition, however, the second identification device of the identification unit 110 of the first vehicle identification and warning system 100 and the second identification device of the identification unit 410 (not shown) of the second vehicle identification and warning system 400 are provided. can identify different regions. More specifically, the second identification device of the identification unit 110 of the first vehicle identification and warning system 100 is an area where the driver's field of view of vehicle A 300 does not reach (and/or an area outside the driver's field of view). , the second identification device of the identification unit 410 of the second vehicle identification and warning system 400 is an area out of the driver's field of view of the vehicle B 500 (and/or an area outside the driver's field of view) (' blind areas') can be identified.

Also, the first vehicle identification and warning system 100 ('first sign apparatus') and the second vehicle identification and warning system 400 ('second sign apparatus') may be operated in conjunction. To this end, the first vehicle identification and warning system 100 and the second vehicle identification and warning system 400 may communicate with each other in real time. As the first vehicle identification and warning system 100 and the second vehicle identification and warning system 400 operate in conjunction with each other, the output unit 120 of the first vehicle identification and warning system 100 is the vehicle B 500 . At least one of information related to approach and information related to an area that does not reach the driver's field of view of the vehicle B 500 (and/or an area outside the driver's field of view) may be further output. Alternatively, the output unit 120 of the first vehicle identification and warning system 100 provides information related to the approach of the vehicle A 300 and an area (and/or the driver's view of the vehicle A 300 ) that does not reach the driver's view. In outputting information related to an area outside the viewing angle ('blind area' 320 ), at least one of the information related to the approach of the vehicle B 500 and the information related to the blind area 320 of the vehicle B 500 . You can refer to one.

Similarly, as the first vehicle identification and warning system 100 and the second vehicle identification and warning system 400 operate in conjunction with each other, the output unit 420 of the second vehicle identification and warning system 400 outputs the vehicle A 300 ) and information related to an area out of sight of the driver of vehicle A 300 (and/or an area out of the driver's field of view) ('first blind area' 320 ). can be printed out. Alternatively, the output unit 420 of the second vehicle identification and warning system 400 may provide information related to the approach of the vehicle B 500 and an area (and/or the driver's viewing angle) that the driver's field of view of the vehicle B 500 does not reach. In outputting the information related to the ('second blind spot' 310), the information related to the approach of the vehicle A 300 and the area where the driver's view of the vehicle A 300 does not reach (and/or At least one of information related to an area outside the driver's field of view) may be referred to.

As an example, when the vehicle identification and warning system is used on a hill road, the first vehicle identification and warning system 100 identifies the approach of vehicle A 300 in one lane, and determines the vehicle B 500 and warning system can be notified to Conversely, the second vehicle identification and warning system 400 may identify the approach of vehicle B 500 in the opposite lane, and inform vehicle A 300 and the warning system of this. As a result of the mutual communication, the output unit 120 of the first vehicle identification and warning system 100 provides information related to the approach of the vehicle A 300 and an area out of the view of the driver of the vehicle A 300 (and In outputting at least one of information related to / or an area outside the driver's field of view), the second vehicle identification and warning system 400 as well as the identification result of the identification unit 110 of the first vehicle identification and warning system 100 ) may be further considered. Similarly, the output unit 420 of the second vehicle identification and warning system 400 provides information related to the approach of the vehicle B 500 and an area out of the driver's field of view of the vehicle B 500 (and/or the driver's field of view). In outputting at least one of the information related to the area outside the ?), the information received from the first vehicle identification and warning system 100 as well as the identification result of the identification unit 410 of the second vehicle identification and warning system 400 can be further considered.

In addition, according to an embodiment, the output unit 120 of the first vehicle identification and warning system 100 may include information related to the approach of the vehicle B 500 and an area out of the field of view of the driver of the vehicle B 500 (and / or at least one of information related to an area outside the driver's field of view) may be further output, and the output unit 420 of the second vehicle identification and warning system 400 may output information related to the approach of the vehicle A 300 and At least one of information related to an area out of the driver's field of view of vehicle A 300 (and/or an area out of the driver's field of view) may be further output.

According to the embodiment, the output unit 120 of the first vehicle identification and warning system 100 and the output unit 420 of the second vehicle identification and warning system 400 are information related to the approach of the vehicle A (300). , information related to an area out of the driver's field of view of vehicle A 300 (and/or an area outside the driver's field of view), information related to approach of vehicle B 500 , and the driver's field of view of vehicle B 500 . It is possible to output all information related to areas that cannot be reached (and/or areas outside the driver's field of view). In this case, as the first vehicle identification and warning system 100 and the second vehicle identification and warning system 400 interwork, the output unit 120 of the first vehicle identification and warning system 100 and the second vehicle identification and warning system The output unit 420 of the warning system 400 may output exactly the same information.

By using the vehicle identification and warning system 100 according to the present invention as described above, the driver and pedestrian of the vehicle can promote driving safety and risk avoidance. In conclusion, it is possible to prevent a vehicle accident by giving drivers and pedestrians time to respond to danger, and even if a vehicle accident occurs, the magnitude of the damage can be minimized.

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5 is a diagram for explaining a frequency waveform according to an embodiment of the present invention.

The microwave sensor according to an embodiment of the present invention may be installed in the first and/or second vehicle identification and warning systems 100 and 400 . In addition, the first and/or second vehicle identification and warning systems 100 and 400 are generated by the microwave sensor and collide with vehicle A 300 (and/or vehicle B 500 ) using a reflected signal. It may identify and/or recognize that vehicle A 300 (and/or vehicle B 500 ) is approaching the first and/or second vehicle identification and warning systems 100 , 400 .

In addition, the microwave sensor, a first step of continuously transmitting a transmission signal 610 generated in the microwave sensor; A second step of receiving the received signal 620 that the transmission signal 610 is reflected by the detection target, that is, vehicle A (300) (and / or vehicle B (500)) is input to the microwave sensor; a third step of generating a frequency waveform 630 of a detection target by mixing the transmission signal 610 and the reception signal 620; A fourth step of storing the frequency waveform 630 in a storage module (eg, memory) of the vehicle identification and warning system 100 may be performed. Here, the 'received signal 620' may be referred to as a 'reflected signal'.

In addition, the microwave sensor repeats the above first to fourth steps to detect a plurality of frequency waveforms 630 stored in the storage module of the vehicle identification and warning system 100 to detect the vehicle A 300 (and / or vehicle B (500)) or other objects (eg, people (passers), other living things, other objects) by classifying according to the fifth step of building a detection target database; When the detection target approaches the microwave sensor, the frequency waveform 630 generated by performing the first to third steps is compared with the frequency waveform 630 stored in the database, and the detection target is vehicle A It may include a sixth step (S60) of identifying whether it is 300 (and/or vehicle B 500) or another object.

For example, the frequency of use of the transmission signal 610 and the reception signal 620 is about 10.525 GHz, and the obtained signal is obtained through frequency modulated continuous wave (FMCW) modulation with the graph shown in the upper part of FIG. Similarly, the frequency change according to continuous time can be output as a graph.

At this time, the time taken between the transmission signal 610 is transmitted from the microwave sensor and the received signal 620 reflected by the detection target is input to the microwave sensor may be expressed as t=2R/c. where R is the distance between the microwave sensor and the sensing target, and c is about 3*10 ⁸ [m/s] in terms of the speed of light.

And, through this, when mixing the transmission signal 610 and the reception signal 620 in the above-described third step, the frequency change (f _t ) caused by the time delay and the frequency change (f _v ) caused by the Doppler effect ) to generate distance (R) and speed (v _r ) information of the sensing target through the sum and difference of ), and as shown in the graph shown at the bottom of FIG. generated frequency waveform 630 .

In addition, τ in FIG. 5 is a round trip delay, and the transmission signal 610 is transmitted from the microwave sensor and reflected on the sensing target (ie, vehicle A 300 and/or vehicle B 500 ). The received signal 620 is the time it takes between being input to the microwave sensor, and in the graph shown at the top of FIG. 5, Tm is a frequency change unit time (sweep time), the transmission signal 610 or the reception signal 620 ) increases from the minimum frequency f ₀ to the peak level.

In addition, in the graph shown at the bottom of FIG. 5 , f _t is a frequency shift to time delay caused by a time delay, and f _v is a frequency change caused by the Doppler effect (Doppler frequency).

And, when mixing the transmission signal 610 and the reception signal 620 in the third step, a frequency change (f _t ) caused by a time delay and a frequency change (f ) caused by the Doppler effect It is characterized in that the distance (R) and approach speed (V _r ) information of the sensing target is generated through the sum and difference of _v ).

이고, 감지 대상의 접근 속도(V_r)는

인 것을 특징으로 할 수 있다. 여기서 B는 주파수 변화 대역폭(sweep bandwidth)이고, Tm이 주파수 변화 단위 시간(sweep time)이고, f_t는 시간 지연에 의하여 발생하는 주파수 변화(frequency shift to time delay)이며, f_v는 도플러 효과에 의하여 발생하는 주파수 변화(Doppler frequency)이고, c는 광속(3*10⁸ m/s)이며, λ은 주파수 파장(wavelength)일 수 있다. 이 때 n은 정수일 수 있으며, 일 예로 n은 2일 수 있다.In addition, the distance (R) of the sensing target is

and the approach speed (V _r ) of the detection target is

It may be characterized as being where B is the frequency shift bandwidth (sweep bandwidth), Tm is the frequency change unit time (sweep time), f _t is the frequency shift to time delay caused by the time delay, and f _v is the Doppler effect. is a frequency change (Doppler frequency) generated by the , c is the speed of light (3*10 ⁸ m/s), λ may be a frequency wavelength (wavelength). In this case, n may be an integer, for example, n may be 2.

When the frequency change (Doppler frequency) value f _v generated by the Doppler effect in the third step is detected to converge in the range of 60 to 150 Hz, it is divided into vehicle A (300) (or vehicle B (500)) and information is stored And when acquiring the distance (R) and approach speed (V _r ) information of the detection target in the fourth step, the approach speed (V _r ) ranges from 1 to 10Km/h to vehicle A 300 (and/or vehicle By limiting to the moving speed of B(500)), the Doppler frequency f _v of the measured value outside the 0~200Hz range can be treated as noise. In this way, the accuracy of the Doppler frequency change value of the vehicle A 300 (or the vehicle B 500) can be improved by limiting the information that can be identified as a person through the actual measurement value, thereby improving the misrecognition rate. can

And, in the fourth step described above, the amplitude (Amplitude), the width (Duration), the peak value (Peak level), the polarity (Polarity), Rise time is stored together with the frequency waveform 630, and in the fifth step, whether the detection target is the vehicle A 300 (or the vehicle B 500) together with the frequency waveform 630 or another object (Other living things or other objects) are classified and stored in the database, and when the sensing target approaches in the sixth step, the first to third steps are performed to transmit a signal 610 according to the sensing target distance. and amplitude (Amplitude), width (Duration), peak level, polarity (Polarity), rise time (Rise time) and frequency waveform (630) of the received signal (620) of each classified in the database It is characterized by identifying whether the sensing target is the vehicle A 300 (or the vehicle B 500 ) or another object (another living thing or another object) in comparison with the data.

When the frequency band is output in the above-described sixth step, when the peak value of each amplitude has a value of 142 at a frequency of 11 Hz, 77.9 at a frequency of 18 Hz, 65.5 at 26 Hz, and 74.6 at 29 Hz, it can be classified as human reference pattern information and stored. .

The above-described amplitude (Amplitude), width (Duration), peak level (Peak level), polarity (Polarity), rise time (Rise time) and each data classified in the frequency waveform 630 in the database is the detection target. A sequence of signal waveforms unique enough to be classified according to whether the movement is vehicle A 300 (or vehicle B 500) or another object (another living thing or another object) can be created and big data can be built through it. have.

In addition, the vehicle identification and warning system 100 is the reflected signal 620, the frequency waveform 630 and / or the detection target obtained through the microwave sensor is vehicle A (300) (or vehicle B (500)) or An operation mode of the vehicle identification and warning system 100 may be set differently based on information indicating whether it is a different object (a different living being or another object).

In addition, the vehicle identification and warning system 100 can acquire in real time the distance (R) of the detection target and the approach speed (V _r ) of the detection target through the microwave sensor (that is, a plurality of distance (R) values and a plurality of approach speed (V _r ) values can be measured), and based on this, vector information about the movement of the vehicle identification and warning system 100 can be generated.

For example, the vehicle identification and warning system 100 is configured to i) a first distance (R1) and ii) a first approach speed (Vr1) and iii) to a first sensing target through the microwave sensor at a first time point It is possible to measure the first reception direction of the received signal reflected from the first detection object, and at a second time point, a second distance (R2) and a second approach speed (Vr2) to the first detection object, and iii) The second reception direction of the received signal reflected from the first sensing target may be measured.

For example, the vehicle identification and warning system 100 may provide a vector for the first detection target based on a first distance, a first approach speed, a first reception direction, a second distance, a second approach speed, and a second reception direction. information can be generated. The vector information on the first sensing target may include information on a moving direction and a moving speed of the first sensing target. Here, unlike the moving speed of the first sensing target indicating the speed at which the first sensing target moves in the moving direction, the first approach speed is the vehicle 100 and/or the vehicle identification and warning system ( It is different in that it represents the speed of approaching 100).

As another example, the vehicle identification and warning system 100 may generate vector information about the first sensing target based on a first distance, a first receiving direction, a second distance, and a second receiving direction.

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In addition, an embodiment of the present invention may further include the following features.

Referring to FIGS. 3 and 4 , the first sign apparatus 100 is located around and/or in the second blind area 310 (ie, the second blind spot) of the first sign apparatus 100 through the first identification unit 110 . 2) a blind spot at the position of the vehicle 500) may be observed and/or monitored. In addition, the second sign device 400 is located around the second sign device 400 and/or in the first blind area 320 (ie, the first vehicle 300) through the second identification unit 410 (not shown). blind spots) can be observed and/or monitored.

For example, the first sign apparatus 100 is a predetermined object (or object to be observed) in the second blind area 310 through a signal transmitted and/or received by the microwave sensor included in the first identification unit 110 . , vehicles, other objects, etc.) are located and/or not located. In addition, the second sign apparatus 400 is a predetermined object (or observation object, vehicle, other objects, etc.) are located and/or not located.

For example, the first sign apparatus 100 , the second sign apparatus 400 , the first identification unit 110 , and/or the second identification unit 410 may place the predetermined object in the first blind area 320 . may count the number of times that has never been identified, i) the counted continuous time exceeds a first threshold, or ii) the counted total time (ie including non-consecutive time) exceeds a second threshold It can enter the reset mode (reset mode) when it exceeds. (Meanwhile, ii) with respect to the counted total time, when the reset mode is executed (and/or implemented), the count may be restarted from the beginning again.)

에 기반하여 산출된 제1 표지판 장치(100)와 제2 표지판 장치(400) 간의 추정 거리(R)(또는 제1 식별부(110)와 제2 식별부(410) 간의 추정 거리(R))를 산출할 수 있다.For example, when the first sign apparatus 100 and/or the second sign apparatus 400 is set to the reset mode, the first microwave sensor of the first identification unit 110 is the second identification unit 410 . It is possible to transmit (and receive a reflected signal) a microwave signal toward the second microwave sensor of the. 5 and

Estimated distance R between the first sign apparatus 100 and the second sign apparatus 400 (or estimated distance R between the first identification unit 110 and the second identification unit 410) calculated based on can be calculated.

In addition, the first sign apparatus 100 , the second sign apparatus 400 , the first identification unit 110 , and/or the second identification unit 410 determine the location where the first sign apparatus 100 is installed and the second sign apparatus. Distance information (R ₁ ) between the locations where 400 is installed, and distance information (R ₂ ) between the location where the first identification unit 110 is installed and the location where the second identification unit 410 is installed may be recorded.

Meanwhile, in order to increase the accuracy of the microwave sensor-based distance estimation and speed estimation, the first sign apparatus 100 and/or the second sign apparatus 400 applies predetermined weights based on Equations 1 and 2 below. can decide

[Equation 1]

[Equation 2]

In addition, the first sign device 100 and/or the second sign device 400 accesses the devices 100 and 400 and the identification units 110 and 410 of the present invention based on Equations 5, 6, and 7 below. The speed of the vehicle or object (or the distance to the vehicle or object) may be calculated.

[Equation 3]

[Equation 4]

[Equation 5]

Embodiments of the present invention disclosed in the present specification and drawings are merely provided for specific examples in order to easily explain the technical contents of the present invention and help the understanding of the present invention, and are not intended to limit the scope of the present invention. That is, it will be apparent to those of ordinary skill in the art to which the present invention pertains that other modifications can be implemented based on the technical spirit of the present invention. In addition, each of the above embodiments may be operated in combination with each other as needed. For example, all embodiments of the present invention may be implemented by the system 100 , 400 of the present invention, in parts, in combination with each other.

In addition, the method of controlling the systems 100 and 400 of the present invention may be implemented in the form of program instructions that can be executed through various computer means and recorded in a computer-readable medium.

As such, various embodiments of the present invention may be embodied as computer readable code on a computer readable recording medium in a particular aspect. A computer readable recording medium is any data storage device capable of storing data that can be read by a computer system. Examples of computer readable recording media include read only memory (ROM), random access memory (RAM), and compact disk-read only memory (CD-ROM). ), magnetic tapes, floppy disks, optical data storage devices, and carrier waves (such as data transmission over the Internet). The computer readable recording medium may also be distributed over network-connected computer systems, so that the computer readable code is stored and executed in a distributed manner. In addition, functional programs, codes, and code segments for achieving various embodiments of the present invention may be easily interpreted by programmers skilled in the field to which the present invention is applied.

In addition, it will be appreciated that the apparatus and method according to various embodiments of the present invention can be realized in the form of hardware, software, or a combination of hardware and software. Such software may contain, for example, a volatile or non-volatile storage device such as a ROM, or a memory such as, for example, RAM, a memory chip, device or integrated circuit, whether erasable or rewritable, or For example, it may be stored in a storage medium that is both optically or magnetically recordable, such as a compact disk (CD), DVD, magnetic disk, or magnetic tape, and is readable by a machine (eg, a computer). The method according to various embodiments of the present invention may be implemented by a computer or a mobile terminal including a control unit (control module 111, 221) and a memory, and such a memory may execute instructions for implementing embodiments of the present invention. It will be appreciated that it is an example of a machine-readable storage medium suitable for storing a program or programs including the program.

Accordingly, the present invention includes a program including code for implementing the apparatus or method described in the claims of the present specification, and a machine (computer, etc.) readable storage medium storing such a program. Further, such a program may be transmitted electronically over any medium, such as a communication signal transmitted over a wired or wireless connection, and the present invention suitably includes the equivalent thereof.

The embodiments of the present invention disclosed in the present specification and drawings are merely provided for specific examples to easily explain the technical contents of the present invention and help the understanding of the present invention, and are not intended to limit the scope of the present invention. In addition, the embodiments according to the present invention described above are merely exemplary, and it will be understood by those skilled in the art that various modifications and equivalent ranges of embodiments are possible therefrom. Accordingly, the true technical protection scope of the present invention should be defined by the following claims.

Claims (2)

In a safety system that provides information on blind spots that occur when driving,
a pillar part that is fixedly installed at a location that is a periphery of a road;
an identification unit installed on the pillar unit and including at least one of at least one camera and at least one sensor; and
an output unit for outputting the information obtained by the identification unit; including,
The identification unit includes a first identification device for identifying an approaching vehicle and a second identification device for identifying a right-turning corner blind spot out of the driver's field of view of the vehicle,
The output unit outputs information related to the approach of the vehicle and information related to the blind area,
The information related to the approach of the vehicle includes an image indicating the approach of the vehicle,
The information related to the right-turn corner blind area is characterized in that it includes an image displaying the right-turn corner blind area,
A safety system that provides information about blind spots that occur when driving.
The method of claim 1,
The output is:
Further outputting information indicating the lane of the vehicle,
determining the type of information output through the output unit in consideration of at least one of information indicating the lane of the vehicle and information related to the right-turn corner blind area;
The information related to the approach of the vehicle further includes a voice message informing of the approach of the vehicle, and a warning sound warning of the approach of the vehicle,
The information related to the right-turn corner blind spot further includes a voice message for notifying the presence of a pedestrian or other vehicle in relation to the right-turn corner blind spot, and a warning sound for warning the presence of the pedestrian or other vehicle,
A safety system that provides information about blind spots that occur when driving.

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