KR102195881B1 - Apparatus for providing information on blind spot for safe driving - Google Patents

Abstract

According to the present invention, disclosed is a device for providing information on a blind spot for safe driving. An embodiment of the present invention relates to a vehicle identification and warning system including: an identification unit including at least one of at least one camera and at least one sensor; and an output unit outputting the information obtained by the identification unit, wherein the identification unit includes a first identification device identifying an approaching vehicle and a second identification device identifying a blind spot which a driver′s view of the vehicle does not reach. The output unit according to an embodiment of the present invention can output information related to the approach of the vehicle and information related to the blind spot.

Description

A device that provides blind spot information for safe driving {APPARATUS FOR PROVIDING INFORMATION ON BLIND SPOT FOR SAFE DRIVING}

The present invention relates to an apparatus for providing information on a blind spot for safe driving.

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, identifies an approaching vehicle and an area where the driver's view of the vehicle does not reach, and outputs information obtained based thereon. It relates to a system that does.

Advanced Driver Assistance Systems (ADAS) are systems that help drivers drive. ADAS' Human-Machine Interface (HMI) or HMI reduces driver driving fatigue and helps safe driving.

The advanced driver assistance system accelerates the vehicle to a certain speed, and when activated, the vehicle is driven at a specified speed without depressing the accelerator pedal.Cruise Control, the driver's willingness to change lanes (turning lights) and leaving the lane without There are several types, such as a Lane Departure Warning System (LDWS) and a Pedestrian Protection System, which raises an alarm when there is a warning.

However, since such an advanced driver assistance system is essentially installed inside a vehicle, there is a limitation that it is difficult to be applied universally to a large number of drivers, only applied to drivers of vehicles equipped with advanced technology. In addition, in the event of an accident between a vehicle and a pedestrian, although pedestrians have a higher risk of injury or death, the above-described advanced driver assistance systems also have a limitation that they do not operate to actively avoid dangerous vehicles.

Therefore, there is a need for a system that identifies and warns vehicles on roads or sidewalks, not inside the vehicle, so that drivers of vehicles without advanced driver assistance systems or pedestrians on the street can generally promote driving safety and risk avoidance. do. In particular, the necessity of such a system is more pronounced in environments where the driver's visibility may be limited or attention may be reduced, such as corner areas, hill areas, shoulders, 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 that are not mentioned will be clearly understood by those of ordinary skill in the technical field to which the present invention belongs from the following description. I will be able to.

The present invention for achieving the above object provides an apparatus for providing information on a blind spot 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 view of the driver of the vehicle does not reach, wherein the output unit comprises: information related to the approach of the vehicle; And outputting information related to an area where the driver's view does not reach, and the information related to the approach of the vehicle is an image indicating the approach of the vehicle, an audio message indicating the approach of the vehicle, and a warning of the approach of the vehicle. Includes at least one of a warning sound, and the information related to an area out of reach of the driver is an image indicating an area out of reach of the driver, and the presence of a pedestrian or other vehicle in relation to an area out of reach of the driver It includes at least one of a voice message informing of, 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 a range of values of the vehicle speed. The information related to the speed of the vehicle may be characterized in that different types of information are displayed based on the fact that the speed of the vehicle corresponds to a specific speed range among a plurality of speed ranges.

When the vehicle identification and warning system is related to a right-turn lane, an area where the driver's view of the vehicle does not reach may correspond to a right-turn corner area.

When the vehicle identification and warning system is related to a hill region, a region in which the driver's view of the vehicle is not reached may correspond to a region in which a hill road changes from an uphill to a downhill.

The at least one sensor may include a microwave sensor; Infrared sensor; And it may include at least one of the 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 the pedestrian of the vehicle can achieve driving safety and risk avoidance. In conclusion, vehicle accidents can be prevented by giving drivers and pedestrians time to respond to dangers, 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 can 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, which is handled in conjunction with the accompanying drawings.
1A and 1B are conceptual diagrams of a vehicle identification and warning system according to an embodiment of the present invention.
2 is an exemplary view showing 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 view showing a method of operating a vehicle identification and warning system on a hill according to an embodiment of the present invention.
4 is an exemplary view showing a method of operating in conjunction with a plurality of vehicle identification and warning systems 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 numbers are used to show 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 in the accompanying drawings are exaggerated, omitted, or schematically illustrated. In addition, the size of each component does not fully reflect the actual size. The same reference numerals are assigned to the same or corresponding components in each drawing.

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 together with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but may be implemented in a variety of different forms, only the present embodiments are intended to complete the disclosure of the present invention, and the general knowledge in the technical field to which the present invention pertains. It is provided to completely inform the scope of the invention to those who have it, and the invention is only defined by the scope of the claims. The same reference numerals refer to the same components throughout the specification.

In this case, it will be appreciated that each block of the flowchart diagrams and combinations of the flowchart diagrams may be executed by computer program instructions. Since these computer program instructions can be mounted on the processor of a general purpose computer, special purpose computer or other programmable data processing equipment, the instructions executed by the processor of the computer or other programmable data processing equipment are described in the flowchart block(s). It creates a means to perform functions. These computer program instructions can also be stored in computer-usable or computer-readable memory that can be directed to a computer or other programmable data processing equipment to implement a function in a particular way, so that the computer-usable or computer-readable memory It is also possible to produce an article of manufacture containing instruction means for performing the functions described in the flowchart block(s). Computer program instructions can also be mounted on a computer or other programmable data processing equipment, so that a series of operating steps are performed on a computer or other programmable data processing equipment to create a computer-executable process to create a computer or other programmable data processing equipment. It is also possible for instructions to perform processing equipment to provide steps for executing the functions described in the flowchart block(s).

Further, each block may represent a module, segment, or part of code including at least one executable instruction for executing the specified logical function(s). In addition, it should be noted that in some alternative execution examples, functions mentioned in blocks may occur out of order. For example, two blocks shown in succession may in fact be executed substantially simultaneously, or the blocks may sometimes be executed in reverse order depending on the corresponding function.

In this case, the term'~ unit' used in this embodiment refers to software or hardware components such as field-programmable gate array (FPGA) or application specific integrated circuit (ASIC), and'~ unit' is a certain role. Perform them. However,'~ part' is not limited to software or hardware. The'~ unit' may be configured to be in an addressable storage medium or may be configured to reproduce one or more processors. Thus, as an example,'~ unit' refers to components such as software components, object-oriented software components, class components and task components, processes, functions, properties, and procedures. , Subroutines, segments of program code, drivers, firmware, microcode, circuitry, data, database, data structures, tables, arrays, and variables. Components and functions provided in the'~ units' may be combined into a smaller number of elements and'~ units', or may be further separated into additional elements and'~ units'. In addition, components and'~ units' may be implemented to play one or more CPUs in a device or a security multimedia card.

In describing the embodiments of the present invention in detail, examples of specific systems will be the main target, but the main subject matter to be claimed in this specification is the scope disclosed in the present specification to other communication systems and services having a similar technical background. It can be applied within a range that does not deviate greatly, and this will be possible at the judgment of a person skilled in the art.

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

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 It is a system that identifies an area where the driver's view may not be reached, and outputs information related to the vehicle approach and the area where the driver’s view is not reachable. 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), and 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, for convenience of illustration and description, it is shown that one camera 220 and one sensor 230 are installed in the vehicle identification and warning system 100, 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. In addition, the camera unit 1110 may include only at least one camera, or the sensor unit 1120 may include only at least one sensor (ie, may not include one of a camera and a sensor).

The identification unit 110 is a first identification device for identifying the approaching vehicle 300 and a second identification device for identifying an area where the driver's view of the vehicle 300 does not reach (and/or an area outside the driver's viewing angle) Includes. As an example, the first identification device may correspond to a sensor that senses a position accessible to the vehicle, and the second identification device may correspond to a camera that photographs an area where the driver's field of view does not reach. However, this is only exemplary, and the first identification device may correspond to the camera, the second identification device may correspond to the sensor, and even at least one of the first identification device and the second identification device is at least one camera and at least one It may be a device composed of a combination of sensors.

In addition, the above-mentioned sensors are names encompassing various types of sensors, and are not limited to a specific type of sensor. For example, the above-mentioned sensors may include at least one of a microwave sensor, an infrared sensor, a vibration detection sensor, and an acoustic sensor, and a sensor that senses other types of information that is not mentioned. It may also include.

The output unit 120 outputs information related to the approach of the vehicle and information related to an area where the driver's view does not reach (and/or an area outside the driver’s view angle). As an example, when the first identification device corresponds to a sensor that senses a location that the vehicle 300 can approach, and the second identification device corresponds to a camera that photographs an area where 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 (e.g., the speaker unit 1220), and displays an image of an area where the driver's field of vision is not reached (and/or an area outside the driver's viewing angle) Can be output (eg, the display unit 1210).

The "information related to the approach of the vehicle" 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 outside the driver's viewing angle) to recognize the approach of the vehicle. As performing a role of performing the role of the vehicle, the approach 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 warning the approach of the vehicle. can do. For example, when the vehicle approaches within a predetermined value (for example, 10m), the output unit 120 is a pedestrian or other vehicle located in an area where the driver's field of view is not reached (and/or an area outside the driver's field of view). It is possible to output images in a form with good identification so that they can be recognized. Likewise, a voice message notifying the approach of the vehicle or a warning sound warning of the approaching of the vehicle may also be outputted using a specific frequency with good discrimination or a volume of a certain size or more so that a sound message indicating the approach of the vehicle may be easily recognized.

"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)" output by the output unit 120 allows the driver of the approaching vehicle to be in an area (and/or An image that plays a role of recognizing the presence of pedestrians or other vehicles located in an area outside the driver's viewing angle), and displays an area where the driver's view does not reach (and/or an area outside the driver's viewing angle); And at least one of a voice message indicating the presence of a pedestrian or other vehicle in relation to an area out of reach of the driver (and/or an area outside the driver's viewing angle), and a warning tone warning the presence of a pedestrian or other vehicle. In this case, too, as with information related to the vehicle's approach, a video indicating an area out of the driver's field of view (and/or an area outside the driver's field of view), an audio message informing the presence of a pedestrian or other vehicle, and a pedestrian or A warning sound warning of the presence of another vehicle may be output in a form that is easy to identify.

The speaker unit 1220 may output an audio 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 that the vehicle 300 is approaching, such as “the vehicle is approaching at a speed of 22 km/h”. As another example, the display 1210 may further display the speed of the vehicle 300 in an 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 a range in which the speed of the vehicle 300 has a value.

For example, the display unit 1210, when the predetermined threshold is 20 km / h and 40 km / h, the vehicle 300 at a speed lower than 20 km / h, the vehicle identification and warning system 100 (and / or identification 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 ) Is displayed in yellow, and when approaching at a speed higher than 40 km/h, the speed of the vehicle 300 may be set to be displayed in red.

As another example, the speaker unit 1220, when the predetermined threshold is 20 km / h and 40 km / h, the vehicle 300 at a speed lower than 20 km / h, the vehicle identification and warning system 100 (and / or identification When approaching the sub (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 It can be set to output the voice message of.

For example, the vehicle identification and warning system 100 may be further associated with various types of traffic information. For example, the identification unit 110 may receive at least one of signal information related to a lane of the vehicle 300 being approached and signal information related to an area where the driver's view does not reach (and/or an area outside the driver’s viewing angle). It can be further identified, and the output unit 120 is among the signal information related to the lane of the vehicle 300 being approached and the area where the driver's view does not reach (and/or the area outside the driver’s viewing angle). Output at least one more 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 where the driver's view does not reach (and/or an area outside the driver's viewing angle) Thus, the type of information to be output can be determined.

More detailed examples related to the vehicle identification and warning system 100 being further associated with various traffic information are described in 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 a driver's field of view may be limited or attention may be reduced. For example, the vehicle identification and warning system 100 may maximize its utilization in environments such as corner areas, hill areas, shoulders, and unprotected lanes.

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

2 is an exemplary view showing 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 embodiment may be used in a right-turn corner. In this case, the first identification device for identifying the approaching vehicle 300 identifies a right-turning lane, and identifies an area where the driver's view of the vehicle 300 does not reach (and/or an area outside the driver's viewing angle). 2 The identification device can 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 at the right corner 210 can recognize it, and the information related to the right corner 210 is output to the vehicle 300. It can be output so that the driver can recognize it.

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 in 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 a crosswalk at the right corner 210 and output information related to the crosswalk signal 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, the vehicle 300 should not turn right until the signal of the crosswalk turns red, so the output unit 120 means a warning sound or warning. An image including a may be output to the driver of the vehicle 300. Alternatively, when the signal of the crosswalk at the right corner 210 is red, if there is a pedestrian crossing the crosswalk, the output unit 120 further enhances the identification of information related to the access of the vehicle 300 (e.g., more High volume sound, etc.) can be output to pedestrians.

3 is an exemplary view showing a method of operating the vehicle identification and warning system 100 on a hill 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. 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 pedestrian approaching from the other side. Accordingly, the first identification device for identifying the approaching vehicle 300 identifies the lane 310 in the approaching direction of the vehicle 300 near the peak 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 viewing angle) can identify an area 320 ('blind area') opposite to the direction the vehicle 300 approaches near the peak of the hill. I 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 the area 320 ('blind area') opposite to the direction the vehicle 300 approaches can recognize. In addition, 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 ('signal device') is installed on a hill, 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, when the first identification device identifies a vehicle traffic light in relation to the lane 310 in the direction the vehicle 300 approaches, and the vehicle 300 violates the signal, the output unit 120 is the approaching vehicle A warning may be displayed and/or output so that all of the pedestrians or other vehicles located in the area 320 opposite to the direction 300 and the vehicle 300 approaches can recognize.

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

For example, in the case of a hilly road (see FIGS. 3 and 4), the degree to which the view is limited may be more severe than the right corner 210 in a right-turn situation. Also, there may be drivers trying to pass the vehicle ahead across the opposite lane, despite the very limited visibility. 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 is approaching and the area 320 on the opposite side of the direction the vehicle 300 approaches, and either of them violates the signal. In this case, a warning may be displayed and/or output so that both the approaching vehicle 300 and the pedestrian or other vehicle located in the area 320 opposite to the approaching direction of the vehicle 300 can recognize.

On the other hand, for situations in which the degree of visibility is severely restricted and the risk of an accident is particularly high, such as on a hill, a method of interlocking the plurality of vehicle identification and warning systems 100 and 400 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 in FIG. 4 by taking a hilly road situation as an example.

4 is an exemplary view showing a method of operating in conjunction with a plurality of vehicle identification and warning systems 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 with each other. In other words, the vehicle identification and warning system according to an embodiment of the present invention (hereinafter, the first vehicle identification and warning system 100) ('first sign device') is another vehicle identification and warning system (hereinafter, the second It can be operated in conjunction with the vehicle identification and warning system 400 ('second sign device').

The first vehicle identification and warning system 100 corresponds to the vehicle identification and warning system described in 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 in 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 The vehicle is referred to as vehicle A 300, and the vehicle identified by the second vehicle identification and warning system 400 is 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 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 view of the vehicle A 300 does not reach (and/or an area outside the driver's viewing angle) The second identification device of the identification unit 410 of the second vehicle identification and warning system 400 is an area where the driver's view of the vehicle B 500 does not reach (and/or an area outside the driver’s viewing angle) (' Blind area') can be identified.

In addition, the first vehicle identification and warning system 100 ('first sign device') and the second vehicle identification and warning system 400 ('second sign device') 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. Since the first vehicle identification and warning system 100 and the second vehicle identification and warning system 400 are operated in conjunction, the output unit 120 of the first vehicle identification and warning system 100 is At least one of information related to access and information related to an area where the driver's view of the vehicle B 500 does not reach (and/or an area outside the driver's view angle) may be further output. Alternatively, the output unit 120 of the first vehicle identification and warning system 100 includes information related to the approach of the vehicle A 300 and an area where the driver's view of the vehicle A 300 does not reach (and/or the driver's In outputting information related to an area outside the viewing angle) ('blind area' 320), at least one of 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, by operating in conjunction with the first vehicle identification and warning system 100 and the second vehicle identification and warning system 400, the output unit 420 of the second vehicle identification and warning system 400 is vehicle A (300). ) And at least one of information related to the access-related information of the vehicle A (300) and the area (and/or the area outside the driver's viewing angle) ('first blind area' 320) Can be printed. Alternatively, the output unit 420 of the second vehicle identification and warning system 400 includes information related to the approach of the vehicle B 500 and an area where the driver's view of the vehicle B 500 does not reach (and/or the driver's viewing angle. (And/or the area outside the view of the driver of the vehicle A 300 and the information related to the approach of the vehicle A 300 in outputting the information related to the'second blind area' 310) (and/or At least one of information related to the area outside the driver's viewing angle) may be referred to.

As an example, when the vehicle identification and warning system is used on a hill, the first vehicle identification and warning system 100 identifies the approach of the vehicle A 300 in one lane, and the vehicle B 500 and the warning system You can inform. Conversely, the second vehicle identification and warning system 400 may identify the approach of the vehicle B 500 in the opposite lane and inform the vehicle A 300 and the warning system of this. As a result of 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 where the driver's view of the vehicle A 300 is not reached (and In outputting at least one of information related to / or an area outside the driver's viewing angle), not only the identification result of the identification unit 110 of the first vehicle identification and warning system 100, but also the second vehicle identification and warning system 400 Information received from) can be further considered. Similarly, the output unit 420 of the second vehicle identification and warning system 400 includes information related to the approach of the vehicle B 500 and an area where the driver's view of the vehicle B 500 does not reach (and/or the driver's viewing angle). In outputting at least one of the information related to (area out of range), 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 You can consider more.

In addition, according to an embodiment, the output unit 120 of the first vehicle identification and warning system 100 includes information related to the approach of the vehicle B 500 and an area where the driver's view of the vehicle B 500 does not reach (and / Or an area outside the driver's viewing angle), and the output unit 420 of the second vehicle identification and warning system 400 may further output information related to the approach of the vehicle A 300 and At least one of information related to a region (and/or a region outside the driver's viewing angle) of the vehicle A 300 to which the driver's view does not reach may be further output.

Depending on 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 outside the driver's field of view of vehicle A 300 (and/or an area outside the driver's field of view), information related to the 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 are not reachable (and/or areas outside the driver's viewing angle). In this case, by interlocking the first vehicle identification and warning system 100 and the second vehicle identification and warning system 400, the output unit 120 of the first vehicle identification and warning system 100 and the second vehicle identification and 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 the pedestrian of the vehicle can achieve driving safety and risk avoidance. In conclusion, vehicle accidents can be prevented by giving drivers and pedestrians time to respond to dangers, and even if a vehicle accident occurs, the magnitude of the damage can be minimized.

5 is a view 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 system 100, 400 uses a signal reflected by the microwave sensor being emitted and hitting the vehicle A 300 (and/or the vehicle B 500). It can be identified and/or recognized that vehicle A 300 (and/or vehicle B 500) is approaching the first and/or second vehicle identification and warning system 100, 400.

In addition, the microwave sensor includes: a first step of continuously transmitting a transmission signal 610 generated from the microwave sensor; A second step of receiving a reception signal 620 input to a microwave sensor by reflecting the transmission signal 610 to a sensing target, that is, vehicle A 300 (and/or vehicle B 500); 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 the storage module (eg, memory) of the vehicle identification and warning system 100 may be performed. Here, the'receive signal 620' may be referred to as a'reflection signal'.

In addition, the microwave sensor, by repeatedly performing the first to fourth steps described above, detects a plurality of frequency waveforms 630 stored in the storage module of the vehicle identification and warning system 100 as a detection target of the vehicle A 300 (and / Or a fifth step of constructing a detection target database by classifying it according to whether it is a vehicle B 500) or another object (eg, a person (passenger), other living thing, other object); When the sensing 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. It may also include a sixth step (S60) of identifying whether it is 300 (and/or vehicle B 500) or another object.

For example, the use frequency 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, and the graph shown at the top of FIG. Likewise, the frequency change over 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 on the object to be sensed 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 object, and c is about 3*10 ⁸ [m/s] at 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 ) generated by the time delay and the frequency change (f _v ) generated by the Doppler effect ) To generate distance (R) and speed (v _r ) information of the object to be detected through the sum and difference of), and the transmission signal 610 and the reception signal 620 are mixed 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 detection target (ie, vehicle A 300 and/or vehicle B 500). It is the time taken between the received signal 620 is input to the microwave sensor, in the graph shown at the top of FIG. 5, Tm is the frequency change unit time (sweep time), the transmission signal 610 or the received signal 620 ) Is the time taken to peak level by increasing from f ₀ , which is the minimum frequency.

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

And, when mixing the transmission signal 610 and the reception signal 620 in the third step, the frequency change f _t generated by the time delay and the frequency change f caused by the Doppler effect _It is characterized in that the distance (R) and approach speed (V _r ) information of the object to be sensed are 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.Also, the distance (R) of the object to be detected is

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

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

When the Doppler frequency value f _v generated by the Doppler effect in the third step converges in the range of 60 to 150 Hz, it is classified into vehicle A (300) (or vehicle B (500)) and information is stored. And in the fourth step, when obtaining information on the distance (R) and the approach speed (V _r ) of the object to be detected, the approach speed (V _r ) is in the range of 1 to 10 Km/h. It is limited to the moving speed of B (500), and through this, the Doppler frequency f _v of the measured value outside the range of 0 to 200 Hz can be treated as noise. In this way, the Doppler frequency change value of vehicle A (300) (or vehicle B (500)) is limited to information that can be identified as a person through actual measurement values, thereby improving accuracy and improving the false recognition rate. I can.

And, in the above-described fourth step, the amplitude, width, peak level, polarity of each of the transmission signal 610 and the reception signal 620 according to the distance of the sensing target, Rise time is stored together with the frequency waveform 630, and in the fifth step, whether the sensing target is vehicle A 300 (or vehicle B 500) or another object together with the frequency waveform 630 It is classified according to whether it is (other living organisms or other objects) and stored in the database, and when the sensing target approaches in the sixth step, steps 1 to 3 are performed, and the transmission signal 610 according to the sensing target distance And the amplitude, width, peak level, polarity, rise time, and frequency waveform 630 of the received signal 620 are classified in the database. It is characterized by identifying whether the object to be detected is vehicle A (300) (or vehicle B (500)) or other objects (other living organisms or other objects) in comparison with the data.

When the frequency band is output in the above-described step 6, when the peak-to-peak value of each amplitude has values of 142 at 11Hz, 77.9 at 18Hz, 65.5 at 26Hz, and 74.6 at 29Hz, it can be divided and stored as human reference pattern information. .

The above-described amplitude, width, peak level, polarity, rise time, and frequency waveform 630 are classified into the database. 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 creature or another object) can be created, and big data can be constructed through this. have.

In addition, the vehicle identification and warning system 100 is whether the reflected signal 620, the frequency waveform 630, and/or the detection target acquired through the microwave sensor is vehicle A 300 (or vehicle B 500) The 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 thing or another object).

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

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

For example, the vehicle identification and warning system 100 includes a vector for the first detection target based on a first distance, a first approach speed, a first receiving direction, a second distance, a second approach speed, and a second receiving direction. Can generate information. The vector information on the first sensing object may include information on a moving direction and a moving speed of the first sensing object. Here, the moving speed of the first detection target indicates the speed at which the first detection target moves toward the moving direction, whereas the first approach speed indicates that the first detection target 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 on the first detection target based on a first distance, a first receiving direction, a second distance, and a second receiving direction.

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

Referring to FIGS. 3 and 4, the first sign device 100 includes a periphery of the first sign device 100 and/or a second blind area 310 (ie, the first sign device 100 ). 2 Observing and/or monitoring a blind area from the vehicle 500's entrance). In addition, the second sign device 400 may be configured around the second sign device 400 and/or the first blind area 320 (ie, the first vehicle 300) through the second identification unit 410 (not shown). Blind area at the entrance) can be observed and/or monitored.

For example, the first sign device 100 is a predetermined object (or object to be observed) in the second blind area 310 through a signal transmitted and/or received by a microwave sensor included in the first identification unit 110. , Vehicle, other object, etc.) is located and/or is not located. In addition, the second sign device 400 includes a predetermined object (or observation object, vehicle, or vehicle) in the first blind area 320 through a signal transmitted and/or received by a microwave sensor included in the second identification unit 410. Other objects, etc.) are located and/or not located.

For example, the first sign device 100, the second sign device 400, the first identification unit 110, and/or the second identification unit 410 may include the predetermined object in the first blind area 320. It is possible to count a time that has never been identified, i) the counted continuous time exceeds a first threshold, or ii) the counted total time (i.e., including non-contiguous time) is a second threshold If it exceeds, it is possible to enter the reset mode. (On the other hand, ii) with respect to the counted total time, when the reset mode is executed (and/or implemented), counting may be restarted from the beginning.)

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 device 100 and/or the second sign device 400 is set to the reset mode, the first microwave sensor of the first identification unit 110 is the second identification unit 410 It may transmit a microwave signal (and receive a reflected signal) toward the second microwave sensor of. Also in Figure 5 and

The estimated distance R between the first sign device 100 and the second sign device 400 (or the estimated distance R between the first identification unit 110 and the second identification unit 410) calculated based on the Can be calculated.

In addition, the first sign device 100, the second sign device 400, the first identification unit 110 and/or the second identification unit 410 may include a position where the first sign device 100 is installed and a second sign device. 400, the distance between the installed position information (R _1), the first may be to record the identification unit 110 is installed, the location and the second identification information unit distance (R ₂₎ between the location (410) is installed.

On the other hand, in order to increase the accuracy of distance estimation and speed estimation based on a microwave sensor, the first sign device 100 and/or the second sign device 400 calculates a predetermined weight based on Equations 1 and 2 below. You can decide.

[Equation 1]

[Equation 2]

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

[Equation 3]

[Equation 4]

[Equation 5]

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The embodiments of the present invention disclosed in the present specification and drawings are only provided for specific examples to easily explain the technical content of the present invention and to aid understanding of the present invention, and are not intended to limit the scope of the present invention. That is, it is apparent to those of ordinary skill in the art that other modifications based on the technical idea of the present invention can be implemented. In addition, each of the above embodiments can be operated in combination with each other as needed. For example, all embodiments of the present invention may be implemented by the systems 100 and 400 of the present invention in which portions are combined 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 described above, various embodiments of the present invention may be implemented as computer readable code in a computer readable recording medium from a specific viewpoint. 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 can also be distributed through networked 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 can be easily interpreted by experienced programmers 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 be, for example, a volatile or nonvolatile storage device such as a storage device such as a ROM, or a memory such as a RAM, memory chip, device or integrated circuit, or For example, it may be optically or magnetically recordable, such as a compact disk (CD), a DVD, a magnetic disk, or a magnetic tape, and stored in a storage medium that can be read by a machine (eg, a computer). The method according to various embodiments of the present invention may be implemented by a computer or a portable terminal including a control unit (control modules 111 and 221) and a memory, and such a memory is used to provide instructions for implementing the embodiments of the present invention. It will be appreciated that this is an example of a machine-readable storage medium suitable for storing a program or programs containing.

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

The embodiments of the present invention disclosed in the present specification and drawings are merely provided for specific examples to easily explain the technical content of the present invention and to aid 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 those of ordinary skill in the art will understand that various modifications and equivalent ranges of embodiments are possible therefrom. Therefore, the true technical protection scope of the present invention should be determined by the following claims.

Claims (5)

In the vehicle identification and warning system,
A first pillar portion fixedly installed at a first position around the road, a first identification portion installed on the first pillar portion and including at least one first camera and at least one first sensor, and the first pillar A first sign device installed in the unit and including a first output unit configured to output information obtained by the first identification unit; And
A second pillar portion fixedly installed at a second position on the other periphery of the road, a second identification portion installed on the second pillar portion and including at least one second camera and at least one second sensor, and the second A second sign device installed on the two pillars and including a second output unit configured to output information obtained by the second identification unit; Including,
The first identification unit is set to identify the approaching first vehicle, the second identification unit is set to identify a second vehicle different from the first vehicle,
The first output unit outputs information related to the approach of the second vehicle and information related to a blind area to which a driver's view of the first vehicle does not reach,
The information related to the approach of the second vehicle includes at least one of an image indicating the approach of the second vehicle, a voice message notifying the approach of the second vehicle, and a warning sound warning of the approach of the second vehicle, The second vehicle further includes different types of information based on the fact that the speed of the second vehicle corresponds to a specific speed range among a plurality of speed ranges,
Information related to the blind area includes i) an image displaying the blind area, ii) a voice message notifying the presence of a pedestrian or the second vehicle in relation to the blind area, or iii) the presence of the pedestrian or the second vehicle. Includes at least one of warning sounds,
When the road is related to a right turn lane, the blind area corresponds to a right turn corner area,
When the road is related to a hill area, the blind area corresponds to an area where the hill road changes from an uphill to a downhill,
The first identification unit includes a microwave sensor for transmitting and receiving a microwave signal,
The microwave sensor acquires a received signal transmitted from the microwave sensor and reflected by hitting the second sign device,
[Equation 1]

[Equation 2]

[Equation 3]

The first identification unit,
An estimated distance R is obtained by estimating a distance between the first sign device and the second sign device based on Equation 1 below,
Apply information indicating the obtained estimated distance R to Equation 2 and a distance R ₁ between the first position where the first sign device is installed and the second position where the second sign device is installed. By doing, we get the weight (w),
Estimating the approach speed (V) of the second vehicle based on Equation 3,
f _t is a frequency shift to time delay generated by a time delay extracted from the received signal, c is a speed of light (3*10 ⁸ m/s), and T _m is a frequency extracted from the received signal Change unit time (sweep time), n is an integer value arbitrarily set by the first identification unit, B is a frequency change bandwidth extracted from the received signal (sweep bandwidth), f _v is extracted from the received signal Is the frequency change (Doppler frequency) caused by the Doppler effect, λ is the frequency wavelength (wavelength),
The first output unit or the second output unit displays information indicating the estimated approach speed of the second vehicle,
Vehicle identification and warning system. delete delete delete delete

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