JP2011154610A - Moving body detection system and moving body detection/indication apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a moving body detection system for detecting a moving body such as a vehicle, which indicates a proper moving direction to the moving body. <P>SOLUTION: In the moving body detection system for detecting a moving body such as a vehicle, a moving body detection means (for example, millimeter wave radar device) detects a moving body located in a detection range, a traveling direction decision means decides a traveling direction to be indicated to the moving body detected by the moving body detection means, and an indication means indicates information on the traveling direction decided by the traveling direction decision means (for example, arrow information for guiding the moving body) to the moving body detected by the moving body detection means. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a moving body detection system and a moving body detection display device for detecting the presence or absence of a moving body such as a vehicle, and more particularly to a moving body detection system and a moving body detection display for instructing an appropriate moving direction to a moving body. Relates to the device.

(First example of background)
For example, at an intersection where there are no traffic lights, it is easy for a collision accident to occur. Confirmation of the presence or absence of a passing vehicle in such a place is mainly performed by visual confirmation with a mirror installed at an intersection.
However, with this method, only the range reflected on the mirror can be confirmed. Moreover, since the driver checks the situation in various directions, the situation reflected on the mirror may not be properly confirmed. Furthermore, the mirror deteriorates the recognition accuracy when it is raining or at night, or when it is dirty due to dust or the like.
For this reason, at intersections without traffic lights, instead of checking with conventional mirrors, or along with it, it is better to inform the driver of the presence or absence of passing vehicles in advance and provide a system to prevent collision accidents in advance. It is considered preferable.

(Second example of background)
For example, in a crowded parking lot, a vehicle traveling around the parking lot to find an empty parking space is often seen. At this time, the driver cannot know where the vacant parking space is in the parking lot, and has to keep searching until the vacant parking space is fortunately found.
However, in this case, there are many vehicles and pedestrians in the parking lot, and there is a risk of a contact accident.

Currently, there are two methods for guiding an empty parking space: a human method and a sensor installed in the parking space.
However, in the human method, a person who manages the parking lot appropriately instructs the vehicle in the direction of travel, which requires labor and labor costs. On the other hand, in the sensor method, it is possible to notify the driver of the location of an empty parking space by means of a display board or a lamp in the parking lot, but at the same time, it is impossible to notify the danger in the parking lot.
For this reason, in order to prevent a contact accident in the parking lot, it is preferable to provide a system that informs the driver in advance of the presence or absence of vehicles and pedestrians and appropriately notifies the location of the empty parking space. .

JP-A-8-305998 JP-A-10-122886

As described above, conventionally, it has been desired to develop a system that can improve the convenience of a moving body (for example, the convenience of a vehicle driver) in a parking lot or the like.
The present invention has been made in view of such a conventional situation, and provides a moving body detection system and a moving body detection display device capable of instructing a moving body such as a vehicle to an appropriate moving direction. For the purpose.

(Description of moving body detection system)
In order to achieve the above object, the present invention has the following configuration in the moving body detection system.
That is, the moving body detection means detects a moving body that exists in the detection range. The traveling direction determination unit determines a traveling direction to be displayed for the moving body detected by the moving body detection unit. The display means displays the information on the traveling direction determined by the traveling direction determination means on the moving body detected by the moving body detection means.
Therefore, it is possible to instruct an appropriate moving direction to a moving body such as a vehicle, and convenience can be improved.

Furthermore, as one configuration example, the present invention has the following configuration in the moving object detection system.
In other words, the system is configured to display the traveling direction to the empty space in the predetermined area with respect to the moving body.
And the several moving body detection means which has a different detection range about the said predetermined area | region was provided. The advancing direction determining means has position detecting means for detecting the position of an empty space in the predetermined area, and the moving body is displayed as a traveling direction to be displayed on the moving body detected by the moving body detecting means. A traveling direction for guiding to the position of the empty space detected by the position detecting means is determined.
Therefore, the traveling direction to the empty space in the predetermined area can be displayed on the moving body, and convenience can be improved.

Here, various things may be used as a mobile body, for example, a vehicle, a person (pedestrian etc.), etc. can be used.
Moreover, as an aspect which detects a moving body, the aspect which detects 1 or more, such as the presence or absence of a moving body, the speed of a moving body, the distance (for example, relative distance) of a moving body, can be used, for example. .
Various moving body detecting means may be used. For example, a radar device that radiates millimeter wave radio waves wirelessly and detects the moving body based on the reflected waves can be used.

Various display means may be used. For example, a display panel or the like may be used. For example, a lamp that lights or blinks light of a predetermined color may be used. Alternatively, a screen that displays characters, graphics, and the like in a predetermined color can be used.
Various information may be used as the traveling direction information. For example, information on an arrow indicating the traveling direction can be used.

  In addition, various areas may be used as the predetermined area in the system that displays the traveling direction to the empty space with respect to the moving body, and for example, an area such as a parking lot can be used. In general, in a parking lot, a plurality of positions (sections) for parking a vehicle are indicated by lines or the like, and whether or not the space is parked by the vehicle for each position (that is, vacant). Is decided.

Various position detecting means for detecting the position of the empty space may be used. As an example, a sensor for detecting whether or not each position (each section) in a parking lot or the like is vacant is used. Can be configured.
Further, as an aspect of determining the traveling direction for guiding the moving body to the position of the empty space, for example, it is determined that the moving body is closest to the position where the moving body exists (or is based on a preset condition or the like). In this case, for example, a processing procedure for determining the position of the empty space close to (for example, the closest) to the moving object is used. It is set in advance.

Further, when a plurality of moving body detection means are provided, the detection range of each moving body detection means may be set in various modes, for example, the detection range of each moving body detection means is different. A mode such as a passage or a road can be used.
Further, when a plurality of moving body detection means are provided, for example, the information of the detection result may be grasped and used by communicating with each other by a wired or wireless connection, or the plurality of movements may be used. A device that manages body detection means receives and manages (stores, etc.) information of detection results by each mobile body detection means by wire or wirelessly, and uses the management information according to preset conditions, etc. It is also possible to adopt a configuration in which various instructions are transmitted to and controlled by each moving body detection unit, or information to be displayed is transmitted to the display unit for display.

  Various information may be displayed on the moving body or the like by the display means. For example, information for informing the danger, information on the speed and distance of the moving body, character information indicating the instruction content, etc. A mode of displaying a map of an overall position (section) in a predetermined area, information indicating an empty space, and the like may be used.

  As an example of the configuration, the passage A (or road) A and the passage B intersect, and the moving body A passing through the passage A toward the intersection is detected by the moving body detection means A, and the passage B When the moving body B that travels toward the intersection (or the moving body B that is not in the direction of the intersection but exists in the path B) is detected by the moving body detection means B, The presence of danger (in this case, another moving body B) in the passage B with respect to the moving body A by the display means A provided to display information in the direction, lighting of a predetermined lamp, etc. A configuration can be used in which the direction in which the danger exists is determined by a predetermined character or the like, or the determination information is omitted and displayed.

(Description of moving body detection display device)
In order to achieve the above object, in the present invention, the moving body detection display device has the following configuration.
That is, the moving body detection means detects a moving body that exists in the detection range. The traveling direction acquisition unit acquires information on the traveling direction to be displayed for the moving body detected by the moving body detection unit. The display means displays the traveling direction information acquired by the traveling direction acquisition means for the moving body detected by the moving body detection means.
Therefore, it is possible to instruct an appropriate moving direction to a moving body such as a vehicle, and convenience can be improved.

Here, what has been described about the mobile body detection system described above can also be applied to a mobile body detection display device.
Further, the traveling direction acquisition unit is configured as a traveling direction determination unit that determines a traveling direction to be displayed for a moving body detected by the moving body detection unit, for example, and has a function of determining the traveling direction by itself. Alternatively, it may be configured to receive and acquire information on the traveling direction determined by a predetermined device (means) outside the mobile object detection display device without having the function of determining the traveling direction itself. May be.

  As described above, according to the present invention, it is possible to instruct an appropriate moving direction to a moving body such as a vehicle, and the convenience can be improved.

It is a figure which shows an example of a mode that the intersection of a four-way way was seen from upper direction. It is a figure which shows an example of the general view of the millimeter wave radar apparatus and display part which were attached to the pole. It is a figure which shows an example of a mode that the intersection of a three-way difference was seen from upper direction. It is a figure which shows an example of the general view of the millimeter wave radar apparatus and display part which were attached to the pole. It is a figure which shows an example of the display of the display part installed in an intersection. It is a figure which shows an example of a mode that the parking lot was seen from upper direction. It is a figure which shows an example of the general view of the millimeter wave radar apparatus and display part which were attached to the pole. It is a figure which shows an example of the general view of the millimeter wave radar apparatus and display part which were attached to the pole. It is a figure which shows an example of the display of the display part installed in a parking lot. It is a figure which shows the structural example of the millimeter wave radar apparatus of FM-CW system. It is a figure which shows the structural example of the millimeter wave radar apparatus of the FM-CW system using a circularly polarized wave.

Embodiments according to the present invention will be described with reference to the drawings.
(First Example) An example of moving object detection at an intersection will be described.
FIG. 1 shows an example of a four-way intersection seen from above.
In this example, four millimeter wave radar devices 1 to 4 are each attached to a pole (or another one) and arranged at the corner of the intersection. Here, the millimeter wave radar device 1 and the millimeter wave radar device 2 are attached to the same pole, and the millimeter wave radar device 3 and the millimeter wave radar device 4 are attached to another identical pole.

Further, the detectable ranges of the four millimeter wave radar devices 1 to 4 are indicated by the detection ranges 11 to 14, respectively, which detect a predetermined range in each direction of the four-way path.
In addition, the millimeter wave radar devices 1 and 2 and the millimeter wave radar devices 3 and 4 that are installed apart from each other communicate wirelessly or by wire, and share information on detection results of each.
In addition, moving bodies such as vehicles 21 and 22 and a pedestrian 23 passing through a four-way road are shown.

FIG. 2 shows an example of an overview of the millimeter wave radar device and the display unit attached to the pole. Here, although the millimeter wave radar devices 3 and 4 are shown as an example, the same applies to the millimeter wave radar devices 1 and 2.
In this example, two millimeter wave radar devices 3 and 4 are attached to the upper end of the pole 32 in directions that face different roads, respectively, and a display unit 31 is attached to the lower side. The display unit 31 is provided with lamps 41, 42, and 43 that are lit in red, for example.

The millimeter wave radar devices 1 to 4 of this example operate by the FM-CW method, and can measure the speed and distance of opposing mobile bodies (vehicles 21 to 22, pedestrians 23, etc.).
Also, the millimeter wave radar devices 3 and 4 (similarly for the millimeter wave radar devices 1 and 2) of this example have a display unit 31, and information on the intersection determined from the detection results of the millimeter wave radar devices 3 and 4. Is displayed on the display unit 31 and the vehicle 21 to 22 or the pedestrian 23 is informed.

An example of the operation of the display unit 31 will be described using the scene shown in FIG.
In this example, there is a vehicle 21 that goes to the intersection in the detection range 12, a pedestrian 23 that goes to the intersection in the detection range 13, and a vehicle 22 that goes to the intersection in the detection range 14.
At this time, in the display unit 31 of the millimeter wave radar devices 3 and 4, for example, when the millimeter wave radar device 4 detects that the vehicle 22 is approaching the intersection, the detection range 13 (walking) of the millimeter wave radar device 3 is detected. The lamp 43 facing the person 23) is turned on or blinked to notify the pedestrian 23 that there is a danger on the left side.

  The millimeter wave radar device 2 detects the vehicle 21 and the millimeter wave radar device 3 detects that the pedestrian 23 is approaching the intersection, so that the display unit 31 detects the range of the millimeter wave radar device 4. The left and right lamps 41 and 42 facing the vehicle 14 (vehicle 22) are turned on or blinked to notify the vehicle 22 that there is a danger on both the right side and the left side.

As described above, the millimeter wave radar devices 1 to 4 and the display unit 31 can notify the moving bodies 21 to 23 existing in each direction of the intersection in advance whether there is a danger in each direction of the intersection.
As a result, the vehicles 21 to 22 and the pedestrian 23 do not need to stare at the mirror near the intersection, for example, and confirm the danger by themselves, as in the prior art. In this example, the information shown on the display unit 31 is used. It becomes possible to know the danger from a relatively long distance.

FIG. 3 shows an example of a state where an intersection of a three-way road is viewed from above.
In this example, three millimeter wave radar devices 51 to 53, detection ranges 61 to 63 of the millimeter wave radar devices 51 to 53, a pedestrian 71, and vehicles 72 to 73 are shown.
Here, the basic configuration and operation are the same as those of the four-passage shown in FIGS. 1 and 2, but in the case of the three-passage of this example, three millimeter wave radars are provided in one pole. Each of the devices 51 to 53 has a structure (shape) attached in a direction facing each of the three roads.

FIG. 4 shows an example of an overview of the millimeter wave radar device and the display unit attached to the pole.
In this example, three millimeter wave radar devices 51, 52, 53 are attached to the upper end of the pole 82 in directions facing different roads, and a display unit 81 is attached to the lower side thereof. In addition, the display unit 81 is provided with lamps 91 and 92.
As described above, the configuration of this example includes the millimeter wave radar devices 51 to 53 and the display unit 81 in the same manner as that shown in FIG. it can.

FIG. 5 shows an example of the display of the display unit installed at the intersection.
The display unit 101 of this example is composed of a display board, and not only lights a lamp but also displays characters and the like.
Specifically, the display unit 101 of this example performs a display for notifying the presence or absence of an approaching mobile body, and in the illustrated example, in response to detecting that there is an approach of a mobile body from the left side, The left lamp of the left and right lamps is lit (for example, lit in red), and an indication of a letter “stop” (for example, a red letter) is displayed at the center. Further, the speed of the approaching object can be detected by the FM-CW radar, and in this example, the display unit 101 displays an indicator or numerical value display (for example, red display) of the detected speed. Yes. Thereby, it is thought that the contact accident resulting from the speed recognition error by human visual observation can be reduced, for example.

(2nd example) The example of the mobile body detection in a parking lot is demonstrated.
FIG. 6 shows an example of the parking lot viewed from above.
In this example, millimeter wave radar devices are installed at three locations in the parking lot, and at the first location, three millimeter wave radar devices 111 to 113 are installed on one pole. A second pole is provided with three millimeter wave radar devices 114-116 attached to one pole, and a third pole has three millimeter wave radar devices 117-119 attached to one pole. Installed ones are installed.
Further, a sensor 121 (only one is indicated by a reference numeral in FIG. 6) is provided on the floor or ceiling of each parking space.
In the parking lot, there are vehicles 131 to 133 that search for an empty parking space and a pedestrian 134.

  In this example, the millimeter wave radar devices 111 to 119 have a function of notifying a vehicle looking for an empty parking space by a display unit of the location of a nearby empty parking space. When there is a vehicle or a pedestrian in the vicinity, it has a function of displaying the presence on the display unit and notifying the driver.

A specific example is shown.
When the vehicle 133 is about to enter the parking lot, its presence is detected by the millimeter wave radar device 118. At the same time, the millimeter wave radar device 119 provided on the same pole detects that a pedestrian 134 is facing from the left side of the vehicle 133.
Further, the presence or absence of an empty parking space is determined by a sensor 121 arranged on the floor or ceiling of each parking space. Information on empty spaces in all parking lots is collectively managed by the sensor 121, and the information is shared with the millimeter wave radar devices 111 to 119. Thereby, the millimeter wave radar devices 111 to 119 can inform the approaching vehicle 133 of an empty parking space at the nearest location.

FIG. 7 shows an example of an overview of the millimeter wave radar device and the display unit attached to the pole.
In this example, three millimeter wave radar devices 117, 118, and 119 are attached to the upper end of the pole 143 so as to face different paths, and display units 141 and 142 are attached to the lower side thereof. . In addition, the display unit 141 is provided with a lamp 151, and the display unit 142 is provided with an arrow 152 formed of a lamp.

In this specific example, since the pedestrian 134 is directed from the left side of the vehicle 133, the lamp 151 of the display unit 141 facing the detection range (vehicle 133) of the millimeter wave radar device 118 is lit in red or the like. Inform the danger from the left side by flashing.
In addition, since the empty parking space near the vehicle 133 is on the right side, the display unit 142 facing the detection range (vehicle 133) of the millimeter wave radar device 118 indicates that the vehicle proceeds rightward. An arrow 152 such as is illuminated and shown.

The continuation of a specific example is shown.
When the vehicle 131 is about to enter the parking lot, its presence is detected by the millimeter wave radar device 111. At the same time, the millimeter wave radar device 112 provided on the same pole detects that the vehicle 132 is heading from the left side of the vehicle 131.

FIG. 8 shows an example of an overview of the millimeter wave radar device and the display unit attached to the pole.
In this example, three millimeter wave radar devices 111, 112, and 113 are attached to the upper end of the pole 163 in directions that face different paths, respectively, and display units 161 and 162 are attached to the lower side thereof. . The display portion 161 is provided with lamps 171 and 172, and the display portion 162 is provided with arrows 173 and 174 made of lamps.

In this specific example, since the vehicle 132 is directed from the left side of the vehicle 131, the lamp 171 of the display unit 161 facing the detection range (vehicle 131) of the millimeter wave radar device 111 is lit or flashed in red or the like. Let them know the danger from the left side.
In addition, since the empty parking space near the vehicle 131 is on the left side, the blue color indicating that the display proceeds to the left on the display unit 162 facing the detection range (vehicle 131) of the millimeter wave radar device 111. An arrow 173 such as is lit and shown.

Further, since the vehicle 131 is directed from the right to the vehicle 132, the lamp 172 of the display unit 161 that is directed toward the detection range (vehicle 132) of the millimeter wave radar device 112 is lit in red or the like. Inform the danger from the right side by flashing.
In addition, since the empty parking space near the vehicle 132 is on the left side, the display unit 162 facing the detection range (vehicle 132) of the millimeter wave radar device 112 indicates that the vehicle proceeds to the left. An arrow 174 such as is lit and shown.

Here, in FIG. 6, for example, the millimeter wave radar devices 111 to 113 and the millimeter wave radar devices 114 to 116 are part of the antennas (in this example, the antenna of the millimeter wave radar device 112 and the antenna of the millimeter wave radar device 116). Are placed facing each other. For this reason, when both apparatuses emit radio waves having the same frequency f ₀ , radio wave interference may occur, causing detection errors of the FM-CW radar. Therefore, in this example, different emission frequencies f ₀ and f ₁ are assigned to the two radar devices facing each other in this way, and thus it is possible to reduce the detection error between them.

FIG. 9 shows an example of the display on the display unit installed in the parking lot.
The display units 181 to 183 (the entire display unit) of this example are configured by a display board, and not only turn on the lamp but also display characters and the like.
Specifically, the upper display unit 181 is a display part that notifies the presence or absence of an approaching mobile body. In this example, the left and right display parts 181 are displayed in response to the detection of the approach of the mobile body from the left side. The left lamp of the two lamps is lit in red or the like, and a “stop” instruction (in this example, “stop” such as red) is displayed at the center.

The middle display portion 182 is a display portion of an arrow that indicates a traveling direction displayed when there is no risk of contact with a moving body. In this example, there is an empty parking space by moving in the right direction. This is indicated by displaying a right-pointing arrow such as blue.
The lower display unit 183 is a display part that displays a map of the parking situation in the parking lot, and displays the parking situation (parked or vacant) detected by the sensor 121 arranged in each parking space. ing. In this example, on the map showing all parking spaces, the parked location is displayed in red, and the vacant location is displayed in yellow. Thereby, it is possible to inform the driver of the parking situation of the entire parking lot.

(Example of FM-CW millimeter-wave radar device)
FIG. 10 shows a configuration example (an example of an internal block) of an FM-CW millimeter-wave radar device.
The millimeter wave radar apparatus of this example includes an FM (Frequency Modulation) modulator 201, a millimeter wave oscillator 202, a transmission amplifier 203, a transmission antenna 204, a reception antenna 211, a reception amplifier 212, a mixer 213, an IF (intermediate frequency) amplifier 214, A signal processing unit 215 and a display unit 216 are provided.

An example of the operation in the millimeter wave radar device of this example will be shown.
The output signal of the millimeter wave oscillator 202 modulated by the FM modulator 201 is amplified by the transmission amplifier 203 and then radiated from the transmission antenna 204.
The reflected wave obtained by reflecting the radiated wave by the object is received by the receiving antenna 211, amplified by the receiving amplifier 212, and then mixed with the output signal of the millimeter wave oscillator 202 by the mixer 213, and as a result The signal is amplified by IF amplifier 214. Thereafter, the resulting signal is processed by the signal processing unit 215, and information on the processing result (for example, information on distance and speed, information notifying danger and traveling direction, etc.) is displayed on the display unit 216. . Thus, by detecting the beat frequency that is the difference between the transmission frequency and the reception frequency, the distance and speed (for example, relative speed) between the millimeter wave radar device and the object can be known.

FIG. 11 shows a configuration example (an example of an internal block) of an FM-CW millimeter-wave radar device using circularly polarized waves.
The millimeter wave radar device of this example includes an FM modulator 221, a millimeter wave oscillator 222, a transmission amplifier 223, a circularly polarized wave transmitting antenna (right or left) 224, a circularly polarized wave receiving antenna (right or left) A1, and reception Amplifier B1, mixer C1, IF (intermediate frequency) amplifier D1, circularly polarized wave receiving antenna (left-handed or right-handed) A2, receiving amplifier B2, mixer C2, IF (intermediate frequency) amplifier D2, signal processing unit 231 and display unit 232 It has.

An example of the operation in the millimeter wave radar device of this example will be shown.
The output signal of the millimeter wave oscillator 222 modulated by the FM modulator 221 is radiated from the circularly polarized wave transmission antenna 224 after being amplified by the transmission amplifier 223.
The reflected waves obtained by reflecting the radiated waves by the object are received by the circularly polarized wave receiving antennas A1 and A2 and amplified by the receiving amplifiers B1 and B2 in the two receiving systems, respectively, and then mixed by the mixers C1 and C2. The output signal of the millimeter wave oscillator 222 is mixed, and the resulting signal is amplified by IF amplifiers D1 and D2. Thereafter, the resulting signal is processed by the signal processing unit 231, and information on the processing result (for example, information on distance and speed, information notifying danger and traveling direction, etc.) is displayed on the display unit 232. . Thus, by detecting the beat frequency that is the difference between the transmission frequency and the reception frequency, the distance and speed (for example, relative speed) between the millimeter wave radar device and the object can be known.

Here, the use of circularly polarized waves will be described.
For example, in a narrow intersection or a parking lot, there are reflective objects other than the object around. In this case, there is a possibility that the receiving antenna receives unnecessary multiple reflected waves from surrounding objects in addition to the direct reflected wave from the object.
Therefore, in this example, circularly polarized antennas 224, A1, and A2 are used as transmission and reception antennas.
Circularly polarized waves have the property that the swirl direction of the reflected wave is opposite to that before reflection. Therefore, the reflected wave radiated from the right-handed circularly polarized antenna can be received by the left-handed circularly polarized antenna, but the reception level is drastically reduced when received by the right-handed circularly polarized antenna. Similarly, a reflected wave radiated from a left-handed circularly polarized antenna can be received by a right-handed circularly polarized antenna, but its reception level is drastically reduced when received by a left-handed circularly polarized antenna.

In this example, this characteristic is used, and one circularly polarized wave transmitting antenna 224 and two circularly polarized wave receiving antennas A1 and A2 in the reverse turning direction are used.
For example, when a right-handed circularly polarized antenna is used as a transmitting antenna and a reception level of a left-handed circularly polarized antenna is higher among two receiving antennas, a direct reflected wave from an object is received. A significant detection result is obtained.

On the other hand, when a right-handed circularly polarized antenna is used as the transmitting antenna, even if the reception level of the right-handed circularly polarized antenna is higher than the two receiving antennas, an even number of multiple reflected waves are received. It is determined that the detection result is unnecessary.
In addition, when a left-handed circularly polarized antenna is used as the transmitting antenna, the relationship between the right-handed and left-handed reception antennas is opposite to the above case.
As described above, by using one circularly polarized wave transmitting antenna 224 and two circularly polarized wave receiving antennas A1 and A2 in the reverse turning direction, detection errors due to multiple reflection can be reduced.

  Here, each determination described above is performed by, for example, the signal processing unit 231 that stores information on the turning direction of each antenna in a memory. Further, for example, the signal processing unit 231 demodulates the received signal only when the received signal level in the turning direction opposite to the circularly polarized wave transmitting antenna 224 is higher than the received signal level. .

(Summary)
As described above, in the moving body detection system of this example, as a sensor for detecting the presence or absence of a moving body such as a vehicle or a pedestrian, a millimeter-wave FM-CW radar device is installed at an intersection or a parking branch. The millimeter wave radar device detects people and objectives, and monitors intersections and parking lots. Further, the millimeter wave radar device is connected to an internal or external display unit (display device), and displays information such as the presence / absence of a dangerous moving body and an appropriate moving direction to notify a driver or a pedestrian.

  Also, the millimeter wave radar device (wireless device) is, for example, fixed and has a transmission / reception unit that transmits and receives signals wirelessly, and an internal or external display unit, and reflects the radio waves transmitted by the transmission / reception unit. To detect the approach of a moving body (moving object) using waves and to notify the moving body of danger or to indicate an appropriate moving direction (traveling direction) based on the detection result of the moving body Predetermined display contents are displayed on the display unit.

Therefore, in the moving body detection system of this example, at the intersection where there is no traffic light, for example, instead of confirming with a conventional mirror, or together with it, the driver is notified in advance of the presence or absence of a passing vehicle, and a collision accident has occurred. Can be prevented.
In addition, in the moving body detection system of this example, for example, in a parking lot at the time of congestion, the driver can be informed in advance of the presence or absence of vehicles and pedestrians, and the location of an empty parking space can be appropriately notified. Can do. Thereby, the contact accident in a parking lot can be prevented beforehand, and the guidance work by the human like the past can be reduced.

As a specific example, it can be notified that a vehicle or the like is approaching in a direction different from the radar transmission source. Further, the traveling direction of the vehicle or the like can be guided.
In this example, a millimeter wave radar is used, which makes it possible to accurately grasp the height (or length) of the vehicle, for example, and to guide the vehicle according to the difference between the truck and the passenger car. Alternatively, information presentation, vehicle guidance according to the vehicle height in a three-dimensional parking lot with vehicle height restrictions, or information presentation can be performed.
In addition, for example, in SA / PA on highways, the traveling direction is determined, so it may be difficult to find a vacant parking space. However, by using the moving body detection system of this example, Accidents can be prevented without determining the direction of travel.

Also, for example, in a millimeter wave radar device, an unnecessary received wave due to multiple reflections can be determined by using one circularly polarized wave transmitting antenna and two circularly polarized wave receiving antennas in directions opposite to each other, Detection error can be reduced.
As described above, in the moving body detection system of this example, according to the detection result of a moving body such as a vehicle or a pedestrian, the mobile body is informed of the danger in advance, or an appropriate moving direction is instructed to the moving body. This makes it possible to enhance the convenience of the driver and pedestrian of the vehicle in various situations.

In the mobile object detection system of this example and the mobile object detection display device of this example (in this example, the millimeter wave radar device having a display unit), a mobile object is configured by a vehicle or a pedestrian, and a plurality of millimeters is detected. A plurality of moving body detection means are configured by the function of the wave radar device, and a traveling direction determination means (or traveling direction acquisition means) is configured by the function of the signal processing unit. For example, position detection is performed by a sensor in a parking lot. The display means is configured by the function of the display unit.
Further, in this example, there is no description about a control device for controlling and controlling information between each radar device, but it has a control device such as a server that collectively collects information on each radar device, It is also possible to take statistics based on data collected by the control device and manage the data.

Here, the configuration of the system and apparatus according to the present invention is not necessarily limited to the configuration described above, and various configurations may be used. The present invention can also be provided as, for example, a method or method for executing the processing according to the present invention, a program for realizing such a method or method, or a recording medium for recording the program. It is also possible to provide various systems and devices.
The application field of the present invention is not necessarily limited to the above-described fields, and the present invention can be applied to various fields.
In addition, as various processes performed in the system and apparatus according to the present invention, for example, the processor executes a control program stored in a ROM (Read Only Memory) in hardware resources including a processor and a memory. A controlled configuration may be used, and for example, each functional unit for executing the processing may be configured as an independent hardware circuit.
The present invention can also be understood as a computer-readable recording medium such as a floppy (registered trademark) disk or a CD (Compact Disc) -ROM storing the control program, and the program (itself). The processing according to the present invention can be performed by inputting the program from the recording medium to the computer and causing the processor to execute the program.

1 to 4, 51 to 53, 111 to 119, millimeter wave radar device, 11 to 14, 61 to 63, detection range, 21, 22, 72, 73, 131 to 133, vehicle, 23, 71, 134・ ・ Pedestrians 31, 81, 101, 141, 142, 161, 162, 181-183 ・ ・ Display unit, 32, 82, 143, 163 ・ ・ Pole, 41-43, 91, 92, 151, 171, 172 .. lamp, 121 .. sensor, 152, 173, 174 .. arrow,
201, 221 .. FM modulator, 202, 222, millimeter wave oscillator, 203, 223, transmission amplifier, 204, transmission antenna, 211, reception antenna, 212, B1, B2, reception amplifier, 213, C1, C2 ·· Mixer, 214, D1, D2 ·· IF amplifier, 215, 231 ·· Signal processing unit, 216, 232 ·· Display unit, 224 ·· Circularly polarized transmission antenna, A1, A2 ·· Circularly polarized Wave receiving antenna,

Claims (3)

In the moving body detection system,
A moving body detecting means for detecting a moving body existing in the detection range;
A traveling direction determining means for determining a traveling direction to be displayed for the moving body detected by the moving body detecting means;
Display means for displaying information on the traveling direction determined by the traveling direction determining means for the moving body detected by the moving body detecting means;
A moving body detection system comprising: The moving object detection system according to claim 1,
A system for displaying a moving direction to a vacant space in a predetermined area for a moving object;
A plurality of moving body detection means having different detection ranges for the predetermined area,
The advancing direction determining means has position detecting means for detecting the position of an empty space in the predetermined area, and the moving body is displayed as a traveling direction to be displayed on the moving body detected by the moving body detecting means. Determining a traveling direction for guiding to the position of the empty space detected by the position detecting means;
The moving body detection system characterized by this. In the moving body detection display device,
A moving body detecting means for detecting a moving body existing in the detection range;
A traveling direction acquisition means for acquiring information on a traveling direction to be displayed for the moving body detected by the moving body detection means;
Display means for displaying information on the traveling direction acquired by the traveling direction acquisition means for the moving body detected by the moving body detection means;
A moving body detection display device comprising:

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