JP7286155B2 - Person or vehicle detection communication system for roadway blind spot aisle - Google Patents

Description

The present invention relates to a device installed in a passage such as an alley that crosses a roadway, which is a blind spot when viewed from the roadway, so that the presence of an invisible person or vehicle can be easily detected from the side of the roadway.

Conventionally, the following devices can be seen as traffic detection/notification devices. The figure is shown in FIG. 5 with reference to the patent document.
5-A-1 of Patent Document 1 is installed at an intersection, and a detection device installed on the road in front of the intersection detects a person, and a sound or light alarm installed on the frame above the roadway. and the driver in the car recognizes the presence of a person from the alarm output. In 5-A-2, the thing installed on the frame above the roadway is a repeater, receives the detection output of the person from the detection device by communication, relays it, and sounds or sounds with the alarm device in the car. This is something that is communicated to the driver with light. In 5-A-3, it is the opposite of 5-A-1, and the thing installed on the frame above the roadway is a vehicle detector, and the output is from the alarm installed on the road in front of the intersection. It notifies that a car is coming to
5-B of Patent Document 2 detects a person in front of a pedestrian crossing with a sensor, and the output drives an alarm installed at the edge of the roadway that lights up to notify the driver of the car. .
A further development of this is 5-C of Patent Document 3, in which a human detection sensor provided on a pole installed on the side of a pedestrian crossing senses a person, and a tip part pulled out from the pole above the roadway A flashing light is driven to make drivers of cars on the road aware of it, and at the same time, it gives people audible warnings when crossing the crosswalk (for example, "Let's cross with caution").
The above devices are installed on public roads such as intersections and crosswalks, and the reporting units for people and vehicles are installed separately.
For public roads, in 5-E of Patent Document 4, a person entering a pedestrian crossing conventionally presses a button to change the signal and waits until the signal changes. In order to improve this, a person is detected, and as a result, voice prompts "Please press the button", and when the button is pressed, voice guidance such as "please wait" is performed.
The one in 5-D is seen in the passage to the parking lot, etc., and the passage hidden behind the building at the corner was taken with a camera or the like so that it can be seen from the car side.
All of the above are subject to installation locations where the equipment can be installed on public roads or private roads under the authority of the owner.
5-F of Patent Document 5 is mainly installed at the entrance of a gas station or a parking lot. It is intended to inform people or vehicles passing on the public road outside facing. There are two sensors for the car side by side, and depending on which one senses first, it is checked whether the car is going out or coming in, and if it comes out, an alarm is issued. It is also possible to install the sensor at a position where it can be seen by people or vehicles on the roadway, and to adjust the angle of the sensor corresponding to the installation position and the position of the vehicle to be sensed inside. There is no sense function for people or vehicles traveling on public roads.
The following case is different from the above conventional example.
A person or car (especially a child) jumps out of a private road that intersects a public road where a car passes, or a passage that is hidden behind a house or fence, and may cause an accident with a car on a public road. In addition, the installation of alarm devices on public roads is prohibited. As with public roads, it is impossible for private individuals involved in passages to install alarms in or on public roads so that cars can see them.
In addition, it needs to be small and inexpensive in order to be installed privately on private roads and passages instead of public roads. In addition, the main function is to notify the person or car in the passage to protect themselves when detecting a person or car in the passage, so that the car is not careful. A device is desired.
There is also a demand for an inexpensive and simple device that can be installed by anyone that can detect a person or vehicle in a blind spot such as a driveway, behind a house or fence when viewed from the vehicle side.

Japanese Patent Laid-Open No. 8-263770 Real Kaihei 3-25997 Japanese Utility Model Laid-Open Showa 60-140198 Japanese Patent Laid-Open No. 2-168399 actual climbing 3090484

An object of the present application is to provide a communication system for detecting a person or a vehicle in a blind spot on a roadway, which can detect a person or vehicle existing in the blind spot invisible from the roadway, from the vehicle side of the roadway.

The description will be made according to the claims below.
The invention according to claim 1 is a communication system for detecting a person or a vehicle in a blind spot passage of a roadway,
A path person or vehicle detector installed in a path, and an in-vehicle judgment device mounted on a vehicle running on the roadway where the path intersects,
The passage person or vehicle detector includes an area person or vehicle sensing means for detecting a person or vehicle existing in the detection area of the passage, a first communication means for transmitting a corresponding signal at the output of the detection, and the area. a first controller for controlling the private or vehicle sensing means and the first communication means; and a first power supply for supplying power for operation thereof;
The in-vehicle decision device comprises: second communication means for receiving a signal transmitted from the first communication means; reception object validity judgment means for judging whether the received signal is valid as a reception object; a detection response output means for outputting a response to the vehicle or the driver when
The receiving object validity determination means determines from which direction, left or right, of the lane of the vehicle running on the roadway the received signal comes from, and corresponds to each of the left-hand traffic rule or the right-hand traffic rule of the vehicle, When it is determined that the signal is coming from the side of the passage that crosses from the left or right side in front of the vehicle , the received signal is validated as a reception object, and the output that causes the vehicle and the driver to respond. If not, the received signal is invalidated as a reception target, and the output that causes the vehicle or driver to respond is not performed ,
The pedestrian or vehicle detector is provided with receiving target validity determination support means for allowing the receiving target validity determination means to determine from which direction, left or right, the received signal comes from the lane of the vehicle running on the roadway. The receiving target validity determination support means assigns direction data obtained by each of the passage person or vehicle detectors installed in the passage to the signal, and the receiving target validity determination means determines the direction from the received signal. It is characterized by being able to read.

The invention of claim 2 provides the communication system for detecting a person or vehicle in a blind spot passage of a roadway according to claim 1 , wherein the received signal is sent to the reception target validity determination means from which direction, left or right, of the lane of a vehicle running on the roadway. In order to determine whether the passage person or vehicle detector has come or not, or to distinguish the individuals of the passage person or vehicle detector, the reception object validity determination support means is provided to determine whether the individual passage person or vehicle detector is installed in the passage. It is characterized in that the first communication means transmits the signal whose frequency is shifted according to the orientation data.

The invention according to claim 3 is a communication system for detecting a person or a vehicle in a blind spot passage of a roadway,
A path person or vehicle detector installed in a path, and an in-vehicle judgment device mounted on a vehicle running on the roadway where the path intersects,
The passage person or vehicle detector includes an area person or vehicle sensing means for detecting a person or vehicle existing in the detection area of the passage, a first communication means for transmitting a corresponding signal at the output of the detection, and the area. a first controller for controlling the private or vehicle sensing means and the first communication means; and a first power supply for supplying power for operation thereof;
The in-vehicle decision device comprises: second communication means for receiving a signal transmitted from the first communication means; reception object validity judgment means for judging whether the received signal is valid as a reception object; a detection response output means for outputting a response to the vehicle or the driver when
The receiving object validity determination means determines from which direction, left or right, of the lane of the vehicle running on the roadway the received signal comes from, and corresponds to each of the left-hand traffic rule or the right-hand traffic rule of the vehicle, When it is determined that the signal is coming from the side of the passage that crosses from the left or right side in front of the vehicle , the received signal is validated as a reception object, and the output that causes the vehicle and the driver to respond. If not, the received signal is invalidated as a reception target, and the output that causes the vehicle or driver to respond is not performed ,
The reception object validity determination means detects a difference in reception strength of the signal by the two reception means installed on the left and right sides of the vehicle in which the on-vehicle determination device is mounted, and the received signal is detected by the second communication means. It is characterized by judging from which direction, left or right, of the lane of the vehicle running on the roadway the signal came from.

The invention according to claim 4 is a communication system for detecting a person or a vehicle in a roadway blind spot passage according to claim 1 or claim 3,
The reception target validity determination means detects whether the vehicle equipped with the reception target validity determination means is approaching or moving away from the passer-by or vehicle detector transmitting the received signal using the Doppler effect. If it is determined that the vehicle is approaching, the received signal is validated as a reception target, and the output is performed to cause the vehicle or the driver to respond,
When it is determined that the vehicle is moving away, the received signal is invalidated as a reception target, and the output for causing the vehicle or the driver to respond is not performed.

Since it is configured as described above, the human or vehicle detection communication system according to the present invention can detect the presence of an invisible person or vehicle in a blind spot passage that intersects the roadway from the vehicle side of the roadway. Allows for easy detection.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a diagram showing one embodiment of a communication system for detecting people or vehicles in a roadway blind spot according to the present invention; BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a diagram showing one embodiment of the configuration of a communication system for detecting a person or vehicle in a blind spot on a roadway according to the present invention; FIG. 3 is a diagram showing an embodiment of requirements in use of a communication system for detecting people or vehicles in a blind spot on a roadway according to the present invention; BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a diagram showing one embodiment of the use state of a communication system for detecting people or vehicles in a blind spot on a roadway according to the present invention; It is a figure which shows the example of the conventional traffic detection / alerting|reporting apparatus.

FIG. 1 is a diagram showing one embodiment of a communication system for detecting a person or vehicle in a roadway blind spot according to the present invention. 1-A, a blind spot person or vehicle detection communication system includes an aisle person or vehicle detector 100 and an on-vehicle determiner 200 . An aisle or vehicle detector 100 is shown at 1-B, and an onboard detector 200 is shown at 1-C. Passage person or vehicle detector 100 is installed in a passage that intersects the roadway and is a blind spot when viewed from the vehicle side of the roadway, and detects the presence of a person or vehicle (including motorcycles, bicycles, etc.) in the passage. If so, it sends a signal to the car side of the roadway. The in-vehicle judgment device 200 is mounted on a vehicle, receives a transmitted signal, judges whether the signal is transmitted from the passage person or the vehicle detector 100 at the target location, and decelerates the vehicle when the signal is valid. It outputs an output that leads to action such as slowing down. The configuration of the system will be described below with reference to FIG. It should be noted that the shape of the housing 180 is not limited to a cylinder, and is arbitrary.

FIG. 2 is a diagram showing one embodiment of the configuration of a communication system for detecting a person or vehicle in a roadway blind spot according to the present invention. Of course, it is stored in the housing, but illustration is omitted here.
A roadway blind spot passage person or vehicle detection communication system comprises a passage person or vehicle detector 100 and an on-vehicle judgment device 200. The passage person or vehicle detector 100 crosses the roadway and becomes a blind spot from the vehicle side of the roadway. and has a function of detecting the presence of a person or a vehicle on the passage and transmitting a signal when it is detected. When detected, the first communication means 120 for transmitting a signal corresponding to the detection by radio waves or the like, the first controller 130 for controlling both, and the first power supply (general-purpose power supply, solar battery, etc.) 140 . The first controller 130 constantly causes the in-area person or vehicle sensing means 110 to perform the detection action, receives the detection output, and transmits a corresponding signal from the first communication means 120 when detected. At the same time, it is convenient to provide a first visible light notification means 150 and an audio notification means 160 for emitting visible light and sound to warn people or vehicles not to jump out. Furthermore, it is convenient to have a reception target validity determination support means 170, which will be described later.

The in-vehicle judgment device 200 is assumed to be installed in general vehicles including vehicles on the roadway side, but the subject of discussion is the vehicle on the roadway side. A second communication means 210 for receiving the signal transmitted from, a reception target validity determination means 220 for determining whether the received signal is valid as a reception target, and if it is determined to be valid, the vehicle or the driver A detection response output means 230 for outputting a response for deceleration, slowdown, etc., a second controller 240 for controlling them, and a second power supply 250 for supplying power to them. Details of the role of the reception target validity determination means 220 are mainly described in FIG.

FIG. 3 is a diagram showing an embodiment of the necessary items in the use state of the communication system for detecting people or vehicles in the roadway blind spot according to the present invention.
A car 310 is running on the roadway 300 in the direction of the arrow. Passages intersect in front of the left, and although they cannot be seen from the roadway, there are people. Passage occupant or vehicle detectors 100 are installed in the aisle 320, as well as at the left rear and right front of the vehicle (for oncoming lanes). The aisle person or vehicle detector 100 is not installed in an aisle where people or vehicles are frequently present. Such passages should rather be equipped with traffic lights. It is a problem from the point of view of traffic accidents that it may pop out, though not frequently. FIG. 4 describes what is necessary in such a case.

FIG. 4 is a diagram showing one embodiment of the usage state of the communication system for detecting people or vehicles in a roadway blind spot according to the present invention. It is the figure which looked at the state of FIG. 3 from the top. The passerby or vehicle detector 100 was substituted with the mark of the antenna. Cars entering the roadway are represented by arrows surrounded by squares. In 4-A and 4-C, a car to be handled (o) and a car that is not required to be handled (x) are drawn by applying the left-hand traffic rule as viewed from the side of the passerby or the vehicle detector 100. FIG. In 4-A, A's car is targeted (○) because it approaches the aisle. Since the car of B moves away, it does not become a target (x). Since C and D are on opposite sides of the aisle, they are irrelevant (x).
In 4-B, it is a distinction between the target passerby and the vehicle detector 100 when viewed from the vehicle side on the roadway. A passers-by or car detector 100 moves away from this and may be disregarded (x).
Since B and C are approaching from now on, they are targeted (○). D and E correspond to lanes on the opposite side, so they do not need to be targeted (x).
Here, there are the following three issues to be considered.
The first is the means of determining whether the vehicle is approaching or moving away. The second is the determination of the direction from which the transmission wave such as an electric wave comes (therefore, whether it is from the passage in contact with the lane of the vehicle or from the passage in contact with the opposite lane). The third means is a means for discriminating when transmission waves such as radio waves come from a plurality of pedestrian or vehicle detectors 100 at the same time.
<Example of the first response>
A transmission wave such as an electric wave from the pedestrian or vehicle detector 100 is received by the second communication means 210, the received frequency is observed, and judgment is made using the Doppler effect. The Doppler effect is a phenomenon in which the frequency of the transmitted wave shifts to the higher frequency side when approaching, and shifts to the lower frequency side when moving away.
<Example of the second response>
Here are three examples of solutions. Anything is possible.
1) Since the installation position of the passage person or vehicle detector 100 is different, the person or vehicle detection means 110 in the area of the passage person or vehicle detector 100 is always installed facing the aisle side, so the direction of its orientation is , the lane and the opposite lane are opposite. One means is to detect it with a magnetic needle or the like mounted on the passerby or vehicle detector 100 and include the data in the transmission signal.
2) Two receiving antennas of the second communication means 210 mounted on the vehicle are attached to the left and right sides of the vehicle, and the direction is determined by comparing the strength of the signals received from the left and right antennas.
3) A transmission wave such as an electric wave from the passage person or vehicle detector 100 is made to have a strong directivity. Alternatively, the reception of the second communication means 210 is received by an antenna with strong directivity.
<Example of the third response>
Here are two examples of solutions. Anything is possible.
1) In order to be able to discriminate by slightly changing the frequency of the transmission wave such as radio waves from the pedestrian or vehicle detector 100 for each individual pedestrian or vehicle detector 100, the difference due to the above-mentioned magnetic needle causes the frequency to be different between the lane and the opposite lane. can be different. This is because if the lane side is known, the front and back (whether it is approaching or moving away) can be determined by the Doppler effect described above.
2) A transmission wave such as an electric wave from the passage person or vehicle detector 100 should have strong directivity. This means is effective for any task.
4-C and 4-D are diagrams showing the situation when a highly directional transmission wave such as an electric wave from the pedestrian or vehicle detector 100 is used. It shows that the transmission wave is emitted only in the direction shown in the figure from the pedestrian or vehicle detector 100 described above.
In 4-C, the transmission wave reaches only car A. This is the desired situation. Even if the transmitted wave reaches the car on the left of car C, it is in the direction of going away, so it can be distinguished by the Doppler effect and can be excluded from the target.
4-D shows a situation in which transmission waves are sent from five passerby or vehicle detectors 100 to one vehicle. The car can only receive the transmission wave from B, which is the desired situation. This is highly desirable as it allows the placement of the pedestrian or vehicle detector 100 so that the transmitted waves do not have overlap.
The means described above are specific means of the reception target validity determination means 220 . It is possible to select a transmission wave to be received (effective as a reception target) by such means.
Examples of the reception object validity determination support means 170 include the measures taken on the transmission wave side, for example, the means 1) for the second response and the means 1) for the third response.

The detection response output means 230 outputs an output for responding to the vehicle or the driver when the transmission wave received from the pedestrian or vehicle detector 100 is determined to be valid. In a car, it is used for control to switch to deceleration, slow down, etc., and for the driver, it is possible to output a voice such as "There is a person (car). Please slow down" or flash a warning light.

As described above, the human or vehicle detection communication system according to the present invention is
Since the presence of an invisible person or vehicle in a blind spot intersecting the roadway can be easily detected from the vehicle side of the roadway, it is very convenient for industrial use.

100 passage person or vehicle detector 110 area person or vehicle sensing means 120 first communication means 120
130 first controller 130
140 First power supply 150 First visible light notification means 160 Voice notification means 170 Receiving target validity determination support means 180 Housing 200 Vehicle-mounted determination device 210 Second communication means 220 Receiving target validity determination means 230 Detection corresponding output means 240 Second controller 250 Second power supply 300 Road 310 Car 320 Passage

Claims (4)

A path person or vehicle detector installed in a path, and an in-vehicle judgment device mounted on a vehicle running on the roadway where the path intersects,
The passage person or vehicle detector includes an area person or vehicle sensing means for detecting a person or vehicle existing in the detection area of the passage, a first communication means for transmitting a corresponding signal at the output of the detection, and the area. a first controller for controlling the private or vehicle sensing means and the first communication means; and a first power supply for supplying power for operation thereof;
The in-vehicle decision device comprises: second communication means for receiving a signal transmitted from the first communication means; reception object validity judgment means for judging whether the received signal is valid as a reception object; a detection response output means for outputting a response to the vehicle or the driver when
The receiving object validity determination means determines from which direction, left or right, of the lane of the vehicle running on the roadway the received signal comes from, and corresponds to each of the left-hand traffic rule or the right-hand traffic rule of the vehicle, When it is determined that the signal is coming from the side of the passage that crosses from the left or right side in front of the vehicle , the received signal is validated as a reception object, and the output that causes the vehicle and the driver to respond. If not, the received signal is invalidated as a reception target, and the output that causes the vehicle or driver to respond is not performed ,
The pedestrian or vehicle detector is provided with receiving target validity determination support means for allowing the receiving target validity determination means to determine from which direction, left or right, the received signal comes from the lane of the vehicle running on the roadway. The receiving target validity determination support means assigns direction data obtained by each of the passage person or vehicle detectors installed in the passage to the signal, and the receiving target validity determination means determines the direction from the received signal. A human or vehicle detection communication system in a blind spot passage of a roadway, characterized by being able to read. In order to allow the receiving object valid determination means to determine from which direction, left or right, of the lane of the vehicle running on the roadway the received signal came, or to distinguish the individual of the pedestrian or vehicle detector. , said receiving object validity determination support means causes the first communication means to transmit said signal whose frequency is shifted according to the orientation data of each of said passage person or vehicle detectors installed in said passage. A communication system for detecting a person or a vehicle in a roadway blind spot according to claim 1 . A path person or vehicle detector installed in a path, and an in-vehicle judgment device mounted on a vehicle running on the roadway where the path intersects,
The passage person or vehicle detector includes an area person or vehicle sensing means for detecting a person or vehicle existing in the detection area of the passage, a first communication means for transmitting a corresponding signal at the output of the detection, and the area. a first controller for controlling the private or vehicle sensing means and the first communication means; and a first power supply for supplying power for operation thereof;
The in-vehicle decision device comprises: second communication means for receiving a signal transmitted from the first communication means; reception object validity judgment means for judging whether the received signal is valid as a reception object; a detection response output means for outputting a response to the vehicle or the driver when
The receiving object validity determination means determines from which direction, left or right, of the lane of the vehicle running on the roadway the received signal comes from, and corresponds to each of the left-hand traffic rule or the right-hand traffic rule of the vehicle, When it is determined that the signal is coming from the side of the passage that crosses from the left or right side in front of the vehicle , the received signal is validated as a reception object, and the output that causes the vehicle and the driver to respond. If not, the received signal is invalidated as a reception target, and the output that causes the vehicle or driver to respond is not performed ,
The reception object validity determination means detects a difference in reception strength of the signal by the two reception means installed on the left and right sides of the vehicle in which the on-vehicle determination device is mounted, and the received signal is detected by the second communication means. A person or vehicle detection communication system in a roadway blind spot, characterized by determining from which direction, left or right, a traffic signal comes from in a lane of a vehicle running on the roadway. The reception target validity determination means detects whether the vehicle equipped with the reception target validity determination means is approaching or moving away from the passer-by or vehicle detector transmitting the received signal using the Doppler effect. If it is determined that the vehicle is approaching, the received signal is validated as a reception target, and the output is performed to cause the vehicle or the driver to respond,
4. The blind spot of the roadway according to claim 1 or 3, wherein when it is determined that the vehicle is moving away, the received signal is invalidated as a reception target, and the output for causing the vehicle and the driver to take action is not performed. Aisle person or vehicle detection communication system.

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