KR101928895B1 - System of recognizing object and warning by microwave frequency analysis - Google Patents

Abstract

Disclosed is a system capable of recognizing and warning an object by analyzing a microwave frequency. The system includes: a microwave sensor module for sensing an object using a microwave; an object identification module for identifying whether a detected object is a pedestrian or a traveling vehicle when the object is detected in the microwave sensor module; and a warning module for warning the pedestrian when a traveling vehicle is present around the pedestrian or warning a driver of the traveling vehicle when the pedestrian is present around the traveling vehicle in case the pedestrian and the traveling vehicle are identified in the object identification module. According to the system for recognizing and warning an object by microwave frequency analysis, even in bad weather such as rain or fog, a microwave is used to accurately recognize the traveling vehicle or the pedestrian on the road, thereby warning a danger. Therefore, there is an effect that it is possible to prevent a traffic accident beforehand and to secure safety. Especially, since it is possible to recognize the vehicle or pedestrian by sensing the speed of the object by only the microwave, a dangerous situation can be predicted and a waning signal can be promptly and accurately generated.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an object recognition and warning system using microwave frequency analysis,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to object recognition, and more particularly, to a system for recognizing an object through microwave frequency analysis and providing a necessary warning.

Traffic accidents often occur on roads without frequent traffic lights and frequent crossings, leading to serious traffic accidents.

Traffic accidents can be detected by CCTV, but in the case of severe fog or bad weather, it is difficult to distinguish the person or the vehicle itself and to detect it.

Therefore, it is necessary to provide a means to accurately identify the vehicle and the person and to prevent the safety accident in the place where there is no frequent crossing road or crosswalk, or where there are not many driving vehicles.

10-2010-0013867 10-2010-0085755

An object of the present invention is to provide an object recognition and warning system through microwave frequency analysis.

According to an aspect of the present invention, there is provided an object recognition and warning system using microwave frequency analysis, comprising: a microwave sensor module for sensing an object using a microwave; An object identification module for identifying whether the detected object is a pedestrian or a traveling vehicle when the object is detected in the microwave sensor module; And a warning module for alerting the pedestrian to the presence of a traveling vehicle or alerting the driver of the traveling vehicle to the presence of a pedestrian when the pedestrian and the traveling vehicle are identified in the object identification module.

Here, the object identification module may include a Doppler frequency analyzer for performing a frequency transition analysis using frequency information of an object sensed by the microwave sensor module to calculate a moving speed of the object; And an object identification unit for identifying whether the object is a pedestrian or a vehicle according to the moving speed of the object calculated by the Doppler frequency analysis unit.

, 여기서,

는 도플러 주파수이고,

는 송신 주파수이고,

는 객체의 이동 속도,

는 빛의 속도로 구성될 수 있다.And the object identification module is configured to calculate the velocity of the object according to the following equation,

, here,

Is the Doppler frequency,

Is the transmission frequency,

The moving speed of the object,

Can be composed of the speed of light.

The warning module may further include a warning medium auto-setting unit that automatically selects and sets a warning medium to warn the driver of the pedestrian or the traveling vehicle in consideration of the moving direction of the pedestrian or the traveling vehicle; An electric sign board which is set as a warning medium by the automatic warning medium setting unit and displays a warning phrase in front of a driver or a pedestrian; A logo projector which is set as a warning medium by the automatic warning medium setting unit and outputs a warning phrase in front of a driver or a pedestrian; A speaker that is set as a warning medium by the automatic warning medium setting unit and outputs a warning phrase sound output or a wild animal nausea; And a street lamp that is set as a warning medium by the automatic warning medium setting unit and is located in front of the driving vehicle and outputs light of a different color.

The warning module may be configured to output a logo of a logojector in front of the driver of the pedestrian or the driving vehicle in consideration of the moving direction of the pedestrian or the driving vehicle.

The microwave sensor module includes: a microwave generator for generating a microwave; A microwave echo frequency controller for controlling an echo frequency of the microwave generated by the microwave generator; A microwave echo portion that emits a microwave at an echo frequency controlled by the microwave echo frequency controller; A microwave receiver for receiving a microwave emitted by the microwave echo and reflected from the object; And an object sensing unit for sensing the presence or absence of the object using the microwave received from the microwave receiving unit.

An object identification alarm unit for outputting an alarm when an object is identified in the object identification module; A warning text input unit for inputting a warning text from a user; A warning medium input unit for receiving a warning medium from the user inputting the warning text inputted from the warning text input unit; And a warning manual setting unit for setting a warning phrase input from the warning input unit and an alarm medium input from the warning medium input unit.

According to the object recognition and warning system using the microwave frequency analysis described above, it is possible to accurately recognize the driving vehicle or the pedestrian on the road by using the microwave even in bad weather such as rain or fog and warn the danger, There is an effect to be able to make safety thoroughly.

Particularly, it is configured to recognize the vehicle or pedestrian by sensing the speed of the object by only microwave, thereby predicting the dangerous situation and warning it promptly and accurately.

1 is a block diagram of an object recognition and warning system through microwave frequency analysis according to an embodiment of the present invention.

While the invention is susceptible to various modifications and alternative forms, specific embodiments thereof are shown by way of example in the drawings and will herein be described in detail to the concrete inventive concept. It should be understood, however, that the invention is not intended to be limited to the particular embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention. Like reference numerals are used for like elements in describing each drawing.

The terms first, second, A, B, etc. may be used to describe various elements, but the elements should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the first component may be referred to as a second component, and similarly, the second component may also be referred to as a first component. And / or < / RTI > includes any combination of a plurality of related listed items or any of a plurality of related listed items.

It is to be understood that when an element is referred to as being "connected" or "connected" to another element, it may be directly connected or connected to the other element, . On the other hand, when an element is referred to as being "directly connected" or "directly connected" to another element, it should be understood that there are no other elements in between.

The terminology used in this application is used only to describe a specific embodiment and is not intended to limit the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise. In the present application, the terms "comprises" or "having" and the like are used to specify that there is a feature, a number, a step, an operation, an element, a component or a combination thereof described in the specification, But do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations thereof.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in commonly used dictionaries are to be interpreted as having a meaning consistent with the contextual meaning of the related art and are to be interpreted as either ideal or overly formal in the sense of the present application Do not.

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

1 is a block diagram of an object recognition and warning system through microwave frequency analysis according to an embodiment of the present invention.

1, an object recognition and warning system 100 using microwave frequency analysis according to an exemplary embodiment of the present invention includes a microwave sensor module 110, an object identification module 120, a warning module 130, User terminal < RTI ID = 0.0 > 140 < / RTI >

The object recognition and warning system 100 through microwave frequency analysis can be configured to precisely detect and identify people and vehicles through microwave frequency analysis even in the presence of bad weather or misty weather, have.

In particular, it can be configured to easily identify a vehicle or a person by grasping the speed of an object using a Doppler effect.

Hereinafter, the detailed configuration will be described.

The microwave sensor module 110 may be configured to detect an object using a microwave. Here, the object may be a person, a traveling vehicle on the road, or a wild animal. In addition, it can be a stone, a rock, or a baggage that has rolled off the road in the mountains.

The microwave sensor module 110 includes a microwave generation unit 111, a microwave echo frequency control unit 112, a microwave echo unit 113, a microwave reception unit 114, and an object sensing unit 115 . Hereinafter, the detailed configuration will be described.

The microwave generating unit 111 may be configured to generate a microwave using an oscillator. Microwaves exist in frequency bands that can accurately detect presence or absence of objects even in situations where visibility is low due to fog or bad weather. It is also widely used in weapon systems because it can detect thin walls and objects behind the windows.

The microwave echo frequency controller 112 controls the microwave echo frequency. To monitor a wider area of the road, the echo frequency of the microwave can be controlled to drive the echo frequency 360 degrees forward like a radar, and the echo frequency can be fixed only in the direction of a specific endless cross- It is possible. And radiate in both directions of the road on the road, respectively.

The microwave echo frequency controller 112 may control the echo frequency differently for each time period or for each period.

The microwave echo frequency control unit 112 may be configured to track the object when it is detected. The microwave echo frequency controller 112 may be configured to track and collect echo frequency information of the microwave and transmit it to the object sensing unit 115 in real time.

The microwave echo portion 113 may be configured to emit a microwave in accordance with the control direction of the microwave echo frequency control portion 112. [

The microwave receiver 114 may be configured to receive a microwave that is emitted from the microwave echo portion 113 and then reflected from the object. The microwave reception unit 114 may be configured to measure the reflection time of the microwave and to transmit the measured reflection time to the object detection unit 115 in real time.

The object detection unit 115 may be configured to detect the presence or absence of an object by using a microwave received from the microwave receiving unit 114. The object detection unit 115 may be configured to detect the appearance of an object by measuring the reflection time of the microwave in the microwave reception unit 114. And calculate the distance to the object through the reflection time, that is, the position information thereof.

The object detection unit 115 may be configured to receive echo frequency information from the microwave echo frequency controller 112 in real time.

The object detection unit 115 may be configured to amplify the reflected wave received from the microwave receiving unit 114 and to smoothen the reflected wave to convert the reflected wave into a digital pulse signal having a value of 0 or 1. The object detection unit 115 may be configured to transmit the digital pulse signal to the Doppler frequency analysis unit 121 in real time.

When the object is detected, the object detection unit 115 is configured to transmit the position information of the object, its echo frequency information, and the microwave frequency transition information to the Doppler frequency analysis unit 121 of the object identification module 120 in real time .

The object identification module 120 may be configured to identify whether the sensed object is a pedestrian or a traveling vehicle when the object is sensed in the microwave sensor module 110. In addition, it can be configured to also identify wild animals. It is also important to be aware of the presence of wild animals on roads, as there are many road kill wildlife on the outlying roads and can cause severe damage to the driver.

The object identification module 120 can be configured to recognize the moving direction and the moving speed of the object by the mode in which the frequency of the object sensed by the microwave sensor module 110 transits according to the Doppler effect. Further, it can be configured to identify whether the object is a pedestrian or a traveling vehicle according to the recognized traveling speed.

The object identification module 120 may be configured to include a Doppler frequency analysis unit 121 and an object identification unit 122. Hereinafter, the detailed configuration will be described

The Doppler frequency analyzer 121 may be configured to receive information about the object sensed by the object sensing unit 115 of the microwave sensor module 110, that is, its position information and echo frequency information. The Doppler frequency analyzer 121 receives the frequency transition information such as the object position information, the echo frequency control information, the transmission microwave frequency, and the reception microwave frequency from the object detection module 115 of the microwave sensor module 110 .

The Doppler frequency analyzer 121 may be configured to perform a frequency transition analysis on the object by the Doppler effect. It can be recognized that when the reflection frequency of the object gradually increases according to the frequency transition analysis, the moving direction gradually approaches and when the reflection frequency gradually decreases, the moving direction gradually moves away. Also, the moving speed of the object can be calculated according to the degree of frequency transition. Specifically, it is as follows.

According to the Doppler effect theory, while the object is approaching the source, the reception frequency reflected from the object becomes higher than the transmission frequency of the source. When the object passes the source, the reception frequency becomes equal to the transmission frequency. The reception frequency becomes lower than the transmission frequency.

Thus, the frequency is affected by the relative motion between the object and the source. Since the wavelength is inversely related to the frequency, the wavelength is also affected.

When the Doppler effect is applied to the radar, the radar Doppler shift formula can be expressed as shown in Equation 1 below.

는 송신 주파수이고,

은 수신 주파수이고,

는 객체의 이동 속도,

는 빛의 속도이다.here,

Is the transmission frequency,

Is the receive frequency,

The moving speed of the object,

Is the speed of light.

Simplifying Equation (1) can be expressed as Equation (2).

In the above equation, the difference between the Doppler frequency, that is, the transmission frequency and the reception frequency, can be calculated by the following equation (3).

는 도플러 주파수이다.here,

Is the Doppler frequency.

로 근사화될 수 있다.If the transmission frequency is the microwave frequency as in the present invention, then the right-hand side denominator in Equation (3)

. ≪ / RTI >

는 하기 수학식 4와 같이 근사화될 수 있다.Therefore, the Doppler frequency

Can be approximated as shown in Equation (4).

를 측정할 수 있다는 의미로 해석될 수 있다.Equation (4) can be interpreted as follows. The frequency of the echo in the moving object is calculated by calculating the difference between the frequency and the projected frequency of the object,

Can be measured.

The object identification unit 122 can accurately grasp the moving direction, the moving speed, and the position of the object according to the frequency transition analysis of the Doppler frequency analyzer 121.

The object identification unit 122 can identify the object as a vehicle when the position of the object exists on a road that is already known and the moving speed of the object far exceeds the average moving speed of the person. And the object of the walking speed or the running speed of the person in the walking area of the road can be identified as a person. Even if the object on the road is a walking speed, it can be identified as a person, and it is possible to leave a room for possibility of a vehicle as a potential.

는 사람의 최대 보행 속도 또는 뛰는 평균 속도 이하이면 사람으로 감지할 수 있다. 최대 보행 속도나 뛰는 평균 속도는 가변 설정될 수 있다.If we look at equation (4) above,

Can be perceived as a person if it is below the maximum walking speed or average running speed of a person. The maximum walking speed or average running speed can be set variable.

The object identification unit 122 may be configured to transmit information indicating that the object has been identified and information about the identified object to the object identification alarm unit 141 of the user terminal 140 in real time.

The warning module 130 may be configured to recognize the risk of a traffic accident in advance in consideration of the object identified in the object identification module 120 and the moving direction of the object, and to warn each object thereof.

The warning module 130 may be configured to warn the pedestrian if there is a traveling vehicle around him or to alert the driver of the traveling vehicle to the presence of a pedestrian when the object identification module 120 identifies the pedestrian and the traveling vehicle.

The warning module 130 may be configured to warn the driver through a sign board 134, a logojector 135 or the like provided in front of the driver of the pedestrian or the traveling vehicle in consideration of the moving direction of the pedestrian or the traveling vehicle.

The warning module 130 includes a warning text automatic setting unit 131, a warning position automatic setting unit 132, a warning medium automatic setting unit 133, a display board 134, a logojector 135, a speaker ) 136, and a street light 137. [ Hereinafter, the detailed configuration will be described.

The warning phrase automatic setting unit 131 may be configured to receive information about the object identified in the object identification unit 122 of the object identification module 120, its location information, the direction of movement, and the like. For pedestrians, "Be careful when the vehicle approaches," "Do not cross the car because it passes." You can set the appropriate warning phrases such as "Please stop because you have a pedestrian," or "Please slow down because you have a pedestrian." Etc. can be set.

The warning position automatic setting unit 132 can set the warning position in front of the moving direction of the moving vehicle and the traveling direction of the traveling vehicle. The electric sign board 134 of the set warning position can be used or the logo output direction of the logo ejector 135 can be set to the set warning position.

The warning medium automatic setting unit 133 can select and set an alarm medium that can warn the warning position set by the automatic warning position setting unit 132. [ The warning medium may include an electric sign board 134, a logo ejector 135, a speaker 136, a streetlight 137, and the like.

The electric sign board 134 may display a warning phrase set in the warning phrase automatic setting unit 131 and may be displayed on the electric signboard 134 in front of the driver or the pedestrian.

The logo ejector 135 may also be configured to display a warning phrase set in the warning phrase automatic setting unit 131 in front of the driver or the pedestrian.

The speaker 136 may be configured to output a warning phrase set in the warning phrase automatic setting unit 131. [ It can be useful when pedestrians are blind. In addition, in the case of birds or elk, the electric signboard 134 or the logo ejector 135 is useless, so that it is possible to output the sound of a bird or elk to sound so as to avoid a bird or a ring quickly.

The street light 137 may be configured to display the street light color differently in front of the direction of travel of the driver. The street lamp 137 outputs the light of the daylight system, and when red light is suddenly outputted to the street lamp 137 in the driver's front direction, it is possible to warn that there may be a pedestrian or a wild animal in the forward direction.

The user terminal 140 is a configuration in which the user controls the warning module 130 at a remote place.

The user terminal 140 may be configured to include an object identification alarm unit 141, a warning text input unit 142, a warning medium setting unit 143, and a warning manual setting unit 144. Hereinafter, the detailed configuration will be described.

The object identification alarm unit 141 may be configured to receive the information that the object has been identified from the object identification unit 122 of the object identification module 120 and output an alarm. And information such as whether the object is a person or a vehicle, and may be configured to output an alarm.

The warning phrase inputting section 142 may be configured to receive a warning phrase from the user. When an alarm is output from the object identification alarm unit 141, the user can recognize the alarm and input the warning text through the warning text input unit 142.

The warning medium input unit 143 may be configured to manually input a warning medium for outputting a warning phrase by the user.

The warning manual setting unit 144 is configured to set a warning phrase and a warning medium received from the warning phrase input unit 142 and the warning medium input unit 143. [ The warning manual setting unit 144 may be configured to manually transmit a warning phrase and a warning medium to the warning phrase automatic setting unit 131 and the warning medium automatic setting unit 133 from a remote place and manually set the priority in advance of automatic setting.

It will be understood by those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit and scope of the invention as defined in the following claims will be.

110: Microwave sensor module 111: Microwave generator
112: microwave echo frequency control unit 113: microwave echo frequency control unit
114: Microwave reception unit 115: Object detection unit
120: object identification module 121: Doppler frequency analysis module
122: Object Identification Unit 130: Warning Module
131: warning phrase automatic setting unit 132: warning position automatic setting unit
133: warning medium automatic setting unit 134:
135: ROGOJUNTER 136: SPEAKER
137: street lamp 140: user terminal
141: object identification alarm section 142: warning phrase input section
143: warning medium setting section 144: warning manual setting section

Claims (7)

A microwave sensor module 110 for sensing an object using a microwave;
An object identification module 120 for identifying whether the sensed object is a pedestrian or a traveling vehicle when the object is detected in the microwave sensor module 110;
And a warning module (130) for alerting the pedestrian to the presence of a traveling vehicle or alerting the driver of the traveling vehicle to the presence of a pedestrian when the pedestrian and the traveling vehicle are identified in the object identification module (120)
The object identification module (120)
A Doppler frequency analyzer 121 for performing a frequency transition analysis using the frequency information of the object sensed by the microwave sensor module 110 to calculate a moving speed of the object;
And an object identification unit (122) for identifying whether the object is a pedestrian or a vehicle according to the moving speed of the object calculated by the Doppler frequency analyzer (121)
The object identification module (120)
A Doppler frequency is calculated according to the following equation (1)
[Equation 1]

In Equation (1), the right-

, And is configured to calculate the velocity of the object in Equation (2) below,
&Quot; (2) "

here,

Is the Doppler frequency,

Is the transmission frequency,

Is the receive frequency,

The moving speed of the object,

Is the speed of light,
The warning module (130)
An automatic warning medium automatic setting unit 133 for automatically selecting and setting a warning medium which can warn the driver of the traveling vehicle or the pedestrian in consideration of the moving direction of the pedestrian or the traveling vehicle;
An electric sign board 134 which is set as a warning medium by the automatic warning medium setting unit 133 and displays a warning phrase in front of the driver or a pedestrian;
A logo ejector 135, which is set as the warning medium by the automatic warning medium setting unit 133 and outputs a warning phrase in front of the driver or the pedestrian;
A speaker 136 that is set as a warning medium by the automatic warning medium setting unit 133 to output a warning phrase sound or output a wild animal sound;
And a street lamp (137), which is set as a warning medium by the automatic warning medium setting unit (133) and is located in front of the traveling vehicle and outputs light of a different color,
The warning module (130)
A logo of a logojector 136 is output in front of the driver of the pedestrian or the traveling vehicle in consideration of the moving direction of the pedestrian or the traveling vehicle,
The microwave sensor module (110)
A microwave generating unit 111 for generating a microwave;
A microwave echo frequency controller 112 for controlling an echo frequency of the microwave generated by the microwave generator 111;
A microwave echo section 113 for emitting a microwave at an echo frequency controlled by the microwave echo frequency control section 112;
A microwave receiving unit (114) for receiving a microwave emitted by the microwave echoing unit (113) and reflected from the object;
And an object sensing unit 115 for sensing the presence or absence of the object using the microwave received by the microwave receiving unit 114,
The microwave receiver 114 measures the reflection time of the microwave and transmits it to the object detector 115 in real time.
The object detecting unit 115 is configured to calculate position information of an object through reflection time,
The object detection unit 115 amplifies the reflected wave received from the microwave receiving unit 114 and smoples the reflected wave to convert the digital pulse signal into a digital pulse signal having a value of 0 or 1 to a Doppler frequency analyzer 121 The object recognition and warning system is based on microwave frequency analysis.
delete delete delete delete delete The method according to claim 1,
An object identification alarm unit 141 for outputting an alarm when an object is identified in the object identification module 120;
A warning text input unit 142 for inputting a warning text from a user;
A warning medium input unit 143 for receiving a warning medium from the user inputting the warning text inputted from the warning text input unit 142;
And a warning manual setting unit 144 for setting a warning phrase input from the warning input unit 142 and a warning medium input from the warning medium input unit 143 Object recognition and warning system using microwave frequency analysis.

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