Vehicle approach alarm device and method using single communication module

Abstract

A vehicle approach alarm device using a single communication module, according to one embodiment of the present invention, comprises: a communication module installed in each vehicle for communication between vehicles; a distance measurement unit which, when a reference vehicle transmits a communication signal in all directions through the communication module, measures a distance between the reference vehicle and another vehicle by using the time it takes for the communication signal to be reflected and return from the other vehicle, and calculates a distance change amount by using the distance between the reference vehicle and the other vehicle and the time at which the distance was measured; and an alarm condition setting unit for setting alarm conditions for outputting an alarm signal on the basis of the measured distance and the calculated distance change amount.

Description

Vehicle approach alarm device and method using a single communication module

[0001] Embodiments of the present invention relate to a vehicle approach warning device and method using a single communication module, and more particularly, to a vehicle approach warning device and method capable of efficiently preventing collisions between vehicles by setting warning conditions for outputting a warning signal in consideration of the distance and distance change amount between vehicles.

[0002]

[0003] Typically, heavy construction equipment like excavators offer easy forward visibility from the cab, but the equipment mounted on the vehicle makes rearward visibility difficult. Most accidents involving heavy equipment, including fatalities and structural damage, occur in locations difficult for the driver to observe. To prevent this, cameras are now being installed on the rear of heavy equipment, and the footage captured by the cameras is displayed in the cab, allowing the driver to identify people or objects behind them.

[0004] Meanwhile, most heavy equipment is equipped with a swivel mechanism on top, and even dump trucks without a swivel mechanism have at least one joint. Accidents involving heavy equipment typically occur during the operation of the joint mechanism. However, simply installing a rearview camera, as is the case with conventional equipment, makes it difficult to monitor the surroundings while the equipment is in operation. Furthermore, blind spots still exist around the vehicle body. Therefore, the development of more efficient monitoring devices is needed to prevent accidents during heavy equipment operation.

[0005] To meet these demands, proximity warning systems have recently been developed that generate an alarm for vehicles or objects approaching within a hazard radius. Typically, proximity warning systems are equipped with a communication module attached to the vehicle. If another communication module is present within a preset warning area based on the communication module, the proximity warning system detects this and notifies the vehicle or object of the presence of an object within the hazard radius.

[0006] However, existing systems have been plagued by issues such as maintaining the alarm without disabling it even when the distance between vehicles increases. Therefore, there is a need for technology that can effectively prevent collisions between vehicles by maintaining or disabling the alarm based on the approaching or moving distance between vehicles.

[0007] Related prior art includes Korean Patent Publication No. 10-2017-0055370 (Title of invention: Heavy equipment safety warning system equipped with active RF ID tags according to separation distance, Publication date: May 19, 2017).

[0008]

[0009] One embodiment of the present invention provides a vehicle approach warning device and method using a single communication module that can effectively prevent collisions between vehicles by setting warning conditions for outputting warning signals in consideration of the distance and distance change amount between vehicles.

[0010]

[0011] The problems to be solved by the present invention are not limited to the problem(s) mentioned above, and other problems not mentioned will be clearly understood by those skilled in the art from the description below.

[0012]

[0013] A vehicle approach warning device using a single communication module according to one embodiment of the present invention comprises: a communication module installed in a reference vehicle, capable of communicating in all directions, and forming a sensing area of ​​a preset size; a distance measuring unit that measures a distance with an external communication module, which is a communication module installed in another vehicle detected by the communication module, and calculates a distance change amount using a distance between the communication module and the external communication module measured at a plurality of time points; and an alarm condition setting unit that sets an alarm condition for outputting an alarm signal based on the measured distance and the calculated distance change amount.

[0014] In addition, the alarm condition setting unit may set an alarm condition to generate an alarm for the reference vehicle if the measured distance is smaller than an alarm range formed by extending to a preset distance based on the reference vehicle, and may set an alarm condition to release the alarm for the reference vehicle if the measured distance is larger than the alarm range.

[0015] In addition, the alarm condition setting unit can set the alarm condition based on the result of comparing the measured distance with the alarm range and the result of comparing the calculated distance change amount with a specific value.

[0016] In addition, the alarm condition setting unit may determine that another vehicle is approaching the reference vehicle if the alarm range is greater than the measured distance and the calculated distance change amount is less than 0, and set the alarm condition to 'maintain'.

[0017] In addition, the alarm condition setting unit sets the alarm condition based on the result of comparing the measured distance with a preset risk range and the result of comparing the calculated distance change amount with a specific value, and the risk range can be included in the alarm range and formed to be equal to or smaller than the alarm range.

[0018] In addition, the alarm condition setting unit may determine that the other vehicle is moving away from the reference vehicle if the risk range is smaller than the measured distance and the calculated distance change amount is greater than 0, and set the alarm condition to 'off'.

[0019] In addition, the alarm condition setting unit can set the alarm condition based on the result of comparing the measured distance with the alarm range and margin range, and the result of comparing the calculated distance change amount with a specific value.

[0020] In addition, the alarm condition setting unit may determine that the other vehicle is moving away from the reference vehicle if the sum of the alarm range and the margin range is less than the measured distance and the calculated distance change amount is greater than 0, and may set the alarm condition to 'off'.

[0021] A vehicle approach warning method using a single communication module according to one aspect of an embodiment of the present invention comprises the steps of: measuring a distance between a reference vehicle transmitting a communication signal in all directions through the communication module and an external communication module installed in another vehicle detected by the communication module; calculating a distance change amount using the distance between the communication module and the external communication module measured at a plurality of time points by the vehicle approach warning device; and setting an alarm condition for the vehicle approach warning device to output an alarm signal based on the measured distance and the calculated distance change amount.

[0022] In addition, the step of setting the above alarm condition may include a step of determining that another vehicle is approaching the reference vehicle and setting the alarm condition to 'maintain' when the alarm range is larger than the measured distance and the calculated distance change amount is less than 0.

[0023] In addition, the step of setting the above alarm condition may include a step of setting the alarm condition to 'off' by determining that the other vehicle is moving away from the reference vehicle if the risk range set arbitrarily is smaller than the measured distance and the calculated distance change amount is greater than 0.

[0024] In addition, the step of setting the alarm condition may include a step of setting the alarm condition to 'off' by determining that the other vehicle is moving away from the reference vehicle when the value of the alarm range plus the margin range is smaller than the measured distance and the calculated distance change amount is greater than 0.

[0025] Specific details of other embodiments are included in the detailed description and accompanying drawings.

[0026]

[0027] According to one embodiment of the present invention, collisions between vehicles can be effectively prevented by setting alarm conditions for outputting alarm signals in consideration of the distance between vehicles and the amount of change in distance.

[0028]

[0029] FIG. 1 is a block diagram illustrating a vehicle approach warning device using a single communication module according to one embodiment of the present invention.

[0030] FIG. 2 is a diagram illustrating a process for measuring a distance between vehicles according to one embodiment of the present invention.

[0031] FIG. 3 and FIG. 4 are diagrams illustrating a process for setting an alarm condition according to one embodiment of the present invention.

[0032] FIG. 5 is a flowchart illustrating a vehicle approach warning method of a vehicle approach warning device using a single communication module according to one embodiment of the present invention.

[0033] FIG. 6 and FIG. 7 are drawings illustrating the operation and problems of a vehicle approach warning device according to the prior art.

[0034]

[0035] The advantages and / or features of the present invention, and the methods for achieving them, will become clearer with reference to the embodiments described in detail below together with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but may be implemented in various different forms. These embodiments are provided only to ensure that the disclosure of the present invention is complete and to fully inform those skilled in the art of the scope of the invention, and the present invention is defined only by the scope of the claims. Like reference numerals refer to like elements throughout the specification.

[0036] In addition, in order to efficiently explain the technical components that make up the present invention, the preferred embodiments of the present invention to be implemented below omit, as much as possible, the system functional components that are already provided in each system functional component or that are commonly provided in the technical field to which the present invention belongs, and focus on explaining the functional components that must be additionally provided for the present invention. If a person having ordinary skill in the technical field to which the present invention belongs, among the functional components that are not illustrated below and are omitted, the functions of the components that have been used in the past will be easily understood, and the relationship between the omitted components as described above and the components added for the present invention will also be clearly understood.

[0037] Additionally, in the following description, terms such as "transmission," "communication," "sending," "receiving," or similar meanings of signals or information encompass not only the direct transmission of signals or information from one component to another, but also transmission via another component. In particular, "transmitting" or "sending" a signal or information to one component indicates the final destination of the signal or information, not the direct destination. This also applies to "receiving" a signal or information.

[0038]

[0039] A vehicle approach warning device utilizes an omnidirectional communication module, allowing the warning range to be set to a circular area around the vehicle. With this device, when two vehicles approach each other (e.g., in a narrow passageway), the warning can sound when the two vehicles enter the warning range. However, when one vehicle passes the other, the warning should be deactivated, but instead, the warning remains active. To address this issue, hysteresis must be incorporated.

[0040] That is, referring to Fig. 6, the existing vehicle approach warning device has an alarm range (D W ) is greater than the measured distance between vehicles (dt), an alarm is generated or maintained, and the alarm range (D W ) and a predetermined margin range is smaller than the measured distance (dt), a method of releasing the alarm was adopted. In other words, the existing vehicle approach alarm device performed alarm generation and alarm release by making the alarm generation and release ranges different.

[0041] In addition, as illustrated in FIG. 7, a vehicle approach warning device using a conventional single communication module sounds an alarm (alarm) simultaneously in two vehicles when the distance between each vehicle is less than or equal to a preset reference distance of the alarm range, and the vehicle approach warning device installed in each vehicle transmits a signal to the speed control device of the vehicle so that the speed of the vehicle can be controlled, thereby controlling the speed of the vehicle (5 km, 10 km control) or providing an alarm. However, even when the distance between the vehicles increases, the vehicle approach warning device cannot determine that the distance between the vehicles is increasing, and thus, there are cases where the speed of the vehicle cannot be controlled or the alarm cannot be released.

[0042] To solve this problem, a method was applied to release the alarm by triggering an external control signal (e.g., speed control) when a preset time has elapsed through a timer. However, the method using time ultimately encountered the problem of not being able to consider the distance between vehicles. Therefore, in this embodiment, a vehicle approach warning device and method are described that can effectively prevent collisions between vehicles by maintaining or releasing the alarm by considering the situation where the distance between vehicles is getting closer or farther away.

[0043] Hereinafter, embodiments of the present invention will be described in detail with reference to the attached drawings.

[0044] FIG. 1 is a block diagram illustrating a vehicle approach warning device using a single communication module according to one embodiment of the present invention.

[0045] Referring to FIG. 1, a vehicle approach warning device (100) using a single communication module according to one embodiment of the present invention may be configured to include a communication module (110), a distance measuring unit (120), an alarm condition setting unit (130), and a control unit (140).

[0046] A communication module (110) may be installed in each vehicle for communication between vehicles. At this time, one communication module (110) may be installed in each vehicle. That is, in the present embodiment, a single communication module (110) with omnidirectional characteristics that enables omnidirectional communication between vehicles may be used.

[0047] In detail, the communication module (110) may be a transceiver that transmits and receives electromagnetic signals using ultra-wideband communication, and without limitation, the communication module (110, 120) may be an omnidirectional communication device capable of transmitting and receiving electromagnetic signals in all directions.

[0048] The communication module (110) forms a sensing area of ​​a preset size capable of communication, and can communicate with an external communication module (110) installed in another vehicle within the formed sensing area to obtain data and distance information.

[0049] For reference, each vehicle described in this specification will be described as a reference vehicle and a relative vehicle. This is for convenience of explanation and ease of understanding, and is not intended to limit the scope of the present invention.

[0050] Additionally, the external communication module installed in another vehicle described in this specification performs the same operation as the communication module (110) installed in the reference vehicle, and can provide an alarm to each vehicle based on the measured distance between the communication modules.

[0051] As shown in FIG. 2, the distance measuring unit (120) can measure the distance between the reference vehicle (101) and the other vehicle (102) by transmitting and receiving a communication signal between the communication module (110) of the reference vehicle (101) and the communication module (110) of another vehicle (102) existing within a sensing area where communication is possible formed in all directions.

[0052] In detail, the distance measuring unit (120) measures the distance to an external communication module installed in another vehicle detected by the communication module (110), and can calculate the distance change amount using the distance between the communication module (110) and the external communication module measured at multiple time points.

[0053] At this time, the multiple time points are time points at which the communication module (110) measures the distance between the communication module (110) and the external communication module of the other vehicle to determine whether another vehicle is approaching, and the distance measuring unit (120) can determine whether another vehicle existing around the reference vehicle is approaching the reference vehicle by comparing the distances measured at the closest time points.

[0054] For example, the distance measuring unit (120) first calculates a change value (s2 - s1) of the measured distance according to a change in the measurement time by using the first measured distance (s1) at the first measurement time (t1), which is a time point at which the distance from the external communication module is measured, and the second measured distance (s2) at the second measurement time (t2), which is a time point measured after the first measurement time, and can calculate the change amount of the distance between the reference vehicle (101) and the other vehicle (102) based on the result value of the calculation.

[0055] In this way, the distance measuring unit (120) calculates the change in distance between the reference vehicle (101) and the other vehicle (102) by using the measured distances at different times between the communication modules installed in the reference vehicle (101) and the other vehicle (102), and can utilize information on whether the reference vehicle is approaching or moving away from the other vehicle.

[0056] The alarm condition setting unit (130) may set an alarm condition to generate an alarm for the reference vehicle if the measured distance is smaller than an alarm range formed by extending to a preset distance based on the reference vehicle, and may set an alarm condition to release the alarm for the reference vehicle if the measured distance is greater than the alarm range. That is, the alarm condition setting unit (130) may set an alarm condition to generate an alarm for the reference vehicle if an external communication module is detected within an alarm range formed within a sensing area based on the reference vehicle, and may set an alarm condition to release the alarm for the reference vehicle if an external communication module is not detected within the alarm range.

[0057] At this time, the alarm range is an alarm range formed by extending to a preset distance based on the communication module (101) installed in the reference vehicle, and by comparing the distance between the communication module and the external communication module and the preset distance of the alarm range, it is possible to determine whether the external communication module has been detected within the alarm range.

[0058] In addition, the alarm condition setting unit (130) can set an alarm condition for outputting an alarm signal based on the measured distance and the calculated distance change amount. That is, the alarm condition setting unit (130) can compare the measured distance between the reference vehicle (101) and the other vehicle (102) with an alarm range or a preset danger range, and at the same time compare the change amount of the measured distance with a specific value and set the alarm condition based on the resulting values.

[0059] As an example, the alarm condition setting unit (130) sets the measured distance (dt) to the alarm range (D W ) and the alarm condition can be set based on the result of comparing the calculated distance change amount (Δdt) with a specific value.

[0060] At this time, the specific value may be “0”, which is a value that can appropriately determine whether the communication module of the reference vehicle (101) is close to or far from the external communication module of the other vehicle (102).

[0061] In detail, when the distance change amount calculated from the distance measuring unit (120) is negative, the second measurement distance (s2) measured at the second measurement time (t2) after the first measurement time (t1) is smaller than the first measurement distance (s1) measured at the first measurement time (t1), and when the set specific value of the alarm condition setting unit (130) is “0”, it is determined that another vehicle (102) is approaching the reference vehicle (101), and the alarm condition can be set to maintain the alarm.

[0062] Referring to FIG. 3, the alarm condition setting unit (130) sets the alarm range (D) based on the position of the reference vehicle (101). W ) is greater than the measured distance (dt) and the distance change (Δdt) is less than 0 (D W > dt, Δdt < 0), the alarm condition can be set to 'maintain' by determining that the other vehicle (102) is approaching the reference vehicle (101).

[0063] Here, setting the above alarm condition to 'maintain' means that the alarm signal continues to be output because the other vehicle (102) is approaching the reference vehicle (101). That is, if the alarm condition setting unit (130) determines that the other vehicle (102) is approaching the reference vehicle (101), the alarm signal can continue to be output.

[0064] As another embodiment, the alarm condition setting unit (130) may set the alarm condition based on the result of comparing the measured distance (dt) with the arbitrarily set danger range (Ds) based on the position of the reference vehicle (101) and the result of comparing the calculated distance change amount (Δdt) with a specific value.

[0065] At this time, the danger range (Ds) is the warning range (D W ) is formed to be equal to or smaller than the above-mentioned alarm range, and the alarm condition setting unit (130) can set the alarm condition to 'maintain' if the measured distance is smaller than the above-mentioned danger range.

[0066] Not limited thereto, when the alarm condition is set to 'maintain', vehicle control, such as speed limit of the vehicle controlled according to the operation of the alarm signal of the reference vehicle (101), can be continuously maintained.

[0067] That is, by setting the risk range (Ds) of the vehicle approach warning device, the user can create a risk range (Ds) within which the alarm alarm must be set, and the vehicle approach warning device can set the alarm range (D W ) In an area excluding the risk range (Ds), based on the calculated distance change amount, it is possible to determine whether another vehicle is approaching or moving away from the reference vehicle and set an appropriate alarm condition.

[0068] Specifically, referring to FIG. 3, if the risk range (Ds) is smaller than the measured distance (dt) and the distance change amount (Δdt) is greater than 0 (Ds < dt, Δdt > 0), the alarm condition setting unit (130) determines that the other vehicle (102) is moving away from the reference vehicle (101), and sets the alarm condition to 'off'.

[0069] Here, setting the above alarm condition to 'off' means that the output of the alarm signal is off because the other vehicle (102) is moving away from the reference vehicle (101). That is, if the alarm condition setting unit (130) determines that the reference vehicle (101) and the other vehicle (102) are moving away, the output of the alarm signal may be stopped.

[0070] Not limited thereto, when the alarm condition is set to 'release', vehicle control, such as speed limit of the vehicle controlled according to the operation of the alarm signal of the reference vehicle (101), may be released.

[0071] As another embodiment, the alarm condition setting unit (130) sets the measured distance (dt) based on the position of the reference vehicle (101) to the alarm range (D W ) and the margin range (M) can be compared to set the above alarm conditions.

[0072] Not limited thereto, the alarm condition setting unit (130) sets the measured distance (dt) based on the position of the reference vehicle (101) to the alarm range (D W ) and the margin range (M), and the alarm condition can be set based on the result of comparing the calculated distance change amount (Δdt) with a specific value. Here, the margin range (M) is formed based on the reference vehicle, and other vehicles are set based on the alarm range (D W ) may be a range set to 1 m that extends to a preset distance from the alarm range (Dw), but may also be a range formed by extending to the preset distance set by the user.

[0073] Referring to Fig. 4, the alarm condition setting unit (130) sets the alarm range (D W) and the above margin range (M) is less than the measured distance, it is determined that the other vehicle (102) is moving away from the reference vehicle (101), and the alarm condition can be set to 'off'. That is, if the other vehicle is located at a distance further than the range (Dw + M) formed larger than the warning range (Dw) of the reference vehicle, the alarm condition setting unit (130) can determine that the other vehicle is completely out of the collision range with the reference vehicle, and can set the alarm condition to 'off'.

[0074] Not limited thereto, the above alarm condition setting unit (130) sets the alarm range (D W ) and the above margin range (M) is less than the measured distance and the calculated distance change is greater than 0 (D W + M < dt, Δdt > 0), the alarm condition can be set to 'off' by determining that the other vehicle (102) is moving away from the reference vehicle (101).

[0075] In addition, when the margin range (M) and the danger range (Ds) of the vehicle approach alarm device are preset, the vehicle approach alarm device sets the margin range and the warning range (D W + M) In the area excluding the danger range (Ds), based on the calculated distance change amount, it is possible to determine whether another vehicle is approaching or moving away from the reference vehicle and set an appropriate alarm condition.

[0076] The control unit (140) can control the overall operation of the vehicle approach warning device (100) using a single communication module according to one embodiment of the present invention, i.e., the communication module (110), the distance measuring unit (120), the alarm condition setting unit (130), etc. The control unit (140) can be implemented by functionally including some or all of the components such as the communication module (110), the distance measuring unit (120), and the alarm condition setting unit (130). That is, the control unit (140) can perform some functions of the components, or alternatively, can perform all functions of the components.

[0077] The control unit (140) controls the overall operation of the vehicle approach warning device (100) and may include a processor such as a CPU. The control unit (140) may control other components included in the vehicle approach warning device (100) to perform operations corresponding to user input received through the input / output unit. Here, the processor may process commands within a computing device, and such commands may include commands stored in a memory or storage device to display graphic information for providing a GUI (Graphical User Interface) on an external input / output device, such as a display connected to a high-speed interface. In another embodiment, multiple processors and / or multiple buses may be used together with multiple memories and memory types as appropriate. In addition, the processor may be implemented as a chipset formed by chips including multiple independent analog and / or digital processors.

[0078]

[0079] The devices described above may be implemented as hardware components, software components, and / or a combination of hardware components and software components. For example, the devices and components described in the embodiments may be implemented using one or more general-purpose computers or special-purpose computers, such as, for example, a processor, a controller, an arithmetic logic unit (ALU), a digital signal processor, a microcomputer, a field programmable array (FPA), a programmable logic unit (PLU), a microprocessor, or any other device capable of executing instructions and responding to them. The processing device may execute an operating system (OS) and one or more software applications running on the operating system. The processing device may also access, store, manipulate, process, and generate data in response to the execution of the software. For ease of understanding, the processing device is sometimes described as being used singly; however, those skilled in the art will appreciate that the processing device may include multiple processing elements and / or multiple types of processing elements. For example, the processing device may include multiple processors, or one processor and one controller. Additionally, other processing configurations, such as parallel processors, are also possible.

[0080] Software may include a computer program, code, instructions, or a combination of one or more of these, which may configure a processing device to perform a desired operation or may, independently or collectively, command the processing device. The software and / or data may be permanently or temporarily embodied in any type of machine, component, physical device, virtual equipment, computer storage medium or device, or transmitted signal wave, for interpretation by the processing device or for providing instructions or data to the processing device. The software may also be distributed over networked computer systems and stored or executed in a distributed manner. The software and data may be stored on one or more computer-readable recording media.

[0081]

[0082] FIG. 5 is a flowchart illustrating a vehicle approach warning method of a vehicle approach warning device using a single communication module according to one embodiment of the present invention.

[0083] The vehicle approach warning method described herein can be performed by the vehicle approach warning device (100) of FIG. 1. The vehicle approach warning method described herein is merely one embodiment of the present invention, and various steps may be added as described below as needed, and the steps described below may also be performed in a different order. Therefore, the present invention is not limited to each step and the order described below.

[0084] Referring to FIGS. 1, 2 and 5, in step (510), the reference vehicle (101) can transmit communication signals in all directions through the communication module (110).

[0085] Then, in step (520), the vehicle approach warning device (100) can measure the distance to an external communication module, which is a communication module installed in another vehicle detected by the communication module.

[0086] Next, in step (530), the vehicle approach warning device (100) can calculate the distance change amount using the distance between the communication module and the external communication module measured at multiple time points.

[0087] Next, in step (540), the vehicle approach warning device (100) can set an alarm condition for outputting an alarm signal based on the measured distance and the calculated distance change amount.

[0088] For example, the vehicle approach warning device (100) can set an alarm condition to generate an alarm for the reference vehicle if the measured distance is smaller than an alarm range formed by extending to a preset distance based on the reference vehicle.

[0089] In addition, the measured distance is within the alarm range (D W ) or the above alarm range (D W ) and the margin range (M) range, the alarm condition can be set to 'off' to release the alarm of the reference vehicle (see Figs. 3 and 4).

[0090] The above vehicle approach warning device (100) is based on the location of the reference vehicle (101) within the warning range (D). W ) is greater than the measured distance (dt) and the distance change (Δdt) is less than 0 (D W > dt, Δdt < 0), it is determined that another vehicle (102) is approaching the reference vehicle (101), and the alarm condition can be set to 'maintain' (see FIG. 3).

[0091] As another example, the vehicle approach warning device (100) may determine that the other vehicle (102) is moving away from the reference vehicle (101) when the danger range (Ds) is smaller than the measured distance (dt) and the distance change amount (Δdt) is greater than 0 (Ds < dt, Δdt > 0), and may set the warning condition to 'off' (see FIG. 3).

[0092] As another example, the vehicle approach warning device (100) has the warning range (D W ) and the above margin range (M) is less than the measured distance, it is determined that the other vehicle (102) is moving away from the reference vehicle (101), and the alarm condition can be set to 'off' (see FIG. 4).

[0093] In addition, the vehicle approach warning device (100) has the warning range (D W ) and the above margin range (M) is less than the measured distance and the calculated distance change is greater than 0 (D W + M < dt, Δdt > 0), the alarm condition can be set to 'release' by determining that the other vehicle (102) is moving away from the reference vehicle (101) (see FIG. 4).

[0094] Next, in step (550), the vehicle approach alarm device (100) can turn the alarm notification on or off according to the set value of the alarm condition.

[0095] That is, when the setting value of the above alarm condition is 'maintain', the vehicle approach alarm device (100) turns on the alarm notification so that the output of the alarm signal can continue. In contrast, when the setting value of the above alarm condition is 'release', the vehicle approach alarm device (100) turns off the alarm notification so that the output of the alarm signal can be stopped.

[0096] According to an embodiment of the present invention, a vehicle approach warning device generates, maintains, and releases a warning based on a measured distance and a calculated distance change amount with respect to an external communication module existing within an alarm range formed by extending to a preset distance based on a communication module installed in a reference vehicle, thereby having the effect of reducing unnecessary warnings in a spherical warning range formed through a single communication module.

[0097] In an embodiment of the present invention, a configuration for comparing ranges and distances may be a comparison of a preset distance extended so that each range formed based on a communication module is formed and a distance between the communication module and an external communication module.

[0098] In addition, in the embodiment of the present invention, a configuration for measuring distance based on communication modules installed in multiple vehicles is disclosed, but it can be implemented in a form in which the communication modules are installed or carried in multiple objects, not limited to vehicles.

[0099] The method according to the embodiment may be implemented in the form of program commands that can be executed through various computer means and recorded on a computer-readable medium. The computer-readable medium may include program commands, data files, data structures, etc., alone or in combination. The program commands recorded on the medium may be those specially designed and configured for the embodiment or may be those known and available to those skilled in the art of computer software. Examples of the computer-readable recording medium include magnetic media such as hard disks, floppy disks, and magnetic tapes, optical media such as CDROMs and DVDs, magneto-optical media such as floptical disks, and hardware devices specially configured to store and execute program commands, such as ROMs, RAMs, and flash memories. Examples of the program commands include not only machine language codes generated by a compiler, but also high-level language codes that can be executed by a computer using an interpreter, etc. The hardware devices described above may be configured to operate as one or more software modules to perform the operations of the embodiment, and vice versa.

[0100] Although the embodiments described above have been described by way of limited examples and drawings, those skilled in the art will appreciate that various modifications and variations can be made based on the above description. For example, appropriate results can still be achieved even if the described techniques are performed in a different order than described, and / or components of the described systems, structures, devices, circuits, etc. are combined or combined in a different manner than described, or are replaced or substituted with other components or equivalents.

[0101] Therefore, other implementations, other embodiments, and equivalents to the claims also fall within the scope of the claims set forth below.

[0102]

[0103] The mode for carrying out the invention has been described together with the best mode for carrying out the invention above.

[0104]

[0105] The present invention relates to a vehicle approach warning device and method using a single communication module, and has repeatability and industrial applicability in a vehicle approach warning device and method using a single communication module that detects the approach of a vehicle and notifies the user of danger.

Claims

1. A communication module installed in a standard vehicle that can communicate in all directions and forms a sensing area of ​​a preset size; A distance measuring unit that measures the distance to an external communication module, which is a communication module installed in another vehicle detected by the communication module, and calculates the distance change amount by using the distance between the communication module and the external communication module measured at multiple time points; and A vehicle approach warning device using a single communication module, characterized by including an alarm condition setting unit that sets an alarm condition for outputting an alarm signal based on the measured distance and the calculated distance change amount.

2. In paragraph 1, The above alarm condition setting section If the measured distance is less than the alarm range formed by extending to a preset distance based on the reference vehicle, an alarm condition is set to generate an alarm for the reference vehicle. A vehicle approach alarm device using a single communication module, characterized in that an alarm condition is set to release the alarm of the reference vehicle if the measured distance is greater than the alarm range.

3. In paragraph 2, The above alarm condition setting section A vehicle approach warning device using a single communication module, characterized in that the warning condition is set based on a result of comparing the measured distance with the warning range and a result of comparing the calculated distance change amount with a specific value.

4. In paragraph 3, The above alarm condition setting section A vehicle approach alarm device using a single communication module, characterized in that if the alarm range is greater than the measured distance and the calculated distance change amount is less than 0, it is determined that another vehicle is approaching the reference vehicle and the alarm condition is set to 'maintain'.

5. In paragraph 1, The above alarm condition setting section The alarm condition is set based on the result of comparing the measured distance with the preset risk range and the result of comparing the calculated distance change amount with a specific value. A vehicle approach warning device using a single communication module, characterized in that the above risk range is included in the above warning range and formed to be equal to or smaller than the above warning range.

6. In paragraph 5, The above alarm condition setting section A vehicle approach warning device using a single communication module, characterized in that if the above-mentioned risk range is smaller than the measured distance and the above-mentioned calculated distance change amount is greater than 0, the other vehicle is determined to be moving away from the reference vehicle and the above-mentioned alarm condition is set to 'off'.

7. In paragraph 2, The above alarm condition setting section A vehicle approach warning device using a single communication module, characterized in that the warning condition is set based on a result of comparing the measured distance with an alarm range and a margin range, and a result of comparing the calculated distance change amount with a specific value.

8. In paragraph 7, The above alarm condition setting section A vehicle approach warning device using a single communication module, characterized in that if the sum of the above-mentioned alarm range and the above-mentioned margin range is less than the above-mentioned measured distance and the above-mentioned calculated distance change amount is greater than 0, the alarm condition is set to 'off' by determining that the other vehicle is moving away from the above-mentioned reference vehicle.

9. In a vehicle access alarm method of a vehicle access alarm device using a single communication module, A step of measuring the distance to an external communication module, which is a communication module installed in another vehicle detected by the communication module, when a reference vehicle transmits a communication signal in all directions through the communication module; A step for calculating a distance change amount by using the distance between the communication module and the external communication module measured at multiple time points by the vehicle approach warning device; and A step for setting an alarm condition for the vehicle approach warning device to output an alarm signal based on the measured distance and the calculated distance change amount; A vehicle approach alarm method using a single communication module characterized by including a .

10. In paragraph 9, The steps to set the above alarm conditions are: If the alarm range is larger than the measured distance and the calculated distance change is less than 0, the step of determining that another vehicle is approaching the reference vehicle and setting the alarm condition to 'maintain' A vehicle approach alarm method using a single communication module characterized by including a .

11. In paragraph 9, The steps to set the above alarm conditions are: If the risk range set arbitrarily is smaller than the measured distance and the calculated distance change amount is greater than 0, a step for determining that the other vehicle is moving away from the reference vehicle and setting the alarm condition to 'off' A vehicle approach alarm method using a single communication module characterized by including a .

12. In paragraph 9, The steps to set the above alarm conditions are: If the value of the alarm range plus the margin range is smaller than the measured distance and the calculated distance change is greater than 0, a step of setting the alarm condition to 'off' by determining that the other vehicle is moving away from the reference vehicle. A vehicle approach alarm method using a single communication module characterized by including a .

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