JP2021189963A - Detection notification system, detection notification method, and computer program - Google Patents

Abstract

To suppress an accident that occurs at an intersection by using a transmission and a reception of radio waves.SOLUTION: A detection notification system is comprised of: a notification control unit that receives radio waves and controls a notification device; a first transmitter installed near an intersection and capable of transmitting a first radio wave to a first communication range; a second transmitter installed near the intersection and capable of transmitting a second radio wave to a second communication range narrower than the first communication range; and a transceiver that receives the first radio wave and the second radio wave, and transmits a third radio wave to the notification control unit, the transceiver being a portable transceiver, in which: at least a part of the communication ranges of the first transmitter and the second transmitter overlaps with each other; the transceiver changes the presence or absence of transmission of the third radio wave according to reception states of the first radio wave and the second radio wave, and the moving speed classification of the transceiver; and when the notification control unit receives the third radio wave, the notification control unit makes a notification using the notification device.SELECTED DRAWING: Figure 2

Description

The present invention relates to a detection and notification system, a detection and notification method, and a computer program.

A technique for identifying the position of a carrier holding a transmitter by detecting radio waves transmitted from a beacon tag (BLE tag: Bluetooth Low Energy tag) transmitter is known (see, for example, Non-Patent Document 1). ). In the technique described in Non-Patent Document 1, when a commuting child who is a carrier of a transmitter passes near a detector capable of detecting radio waves, a parent can confirm the current position of the child. Non-Patent Document 2 discloses a technique for improving work efficiency by analyzing a change in the position of a carrier of a beacon transmitter in a manufacturing / logistics / distribution industry or the like.

Kakogawa City, "About the watching service", [online], April 13, 2nd year of Reiwa, "https://www.city.kakogawa.lg.jp/soshikikarasagasu/kyodo/shiminseikatsuanshinka/ICT/1527646378963.html" TOSHIBA TEC CORPORATION, "About the release of" Positioning System (PVS) "using Bluetooth Beacon-Cost improvement by grasping the movement of people-", [online], April 13, 2nd year of Reiwa, "https //www.toshibatec.co.jp/release/20160418_01.html "

Positioning technology using radio waves such as beacons can be applied to various fields. In the technique described in Non-Patent Document 1, since the position of the child is specified by the receiver arranged in advance while the child is commuting to school, the position of the child is specified, but the moving speed and the moving route of the child are also specified. Is not specified. Therefore, it is difficult to prevent children from being involved in some kind of accident at an intersection or the like in advance. Hereinafter, information related to movement such as movement speed, movement direction, movement route, and means of movement (for example, walking movement, bicycle movement, etc.) is collectively referred to as "movement information".

The position positioning based on the radio wave strength described in Non-Patent Document 2 has poor accuracy, so that the measurement time for positioning becomes long. Further, since wifi is used for communication between the radio wave transmitting side and the radio wave receiving side, it is necessary to establish a connection in advance between the radio wave transmitting side and the radio wave receiving side. Therefore, positioning cannot be used between an unspecified number of radio wave transmitting sides and radio wave receiving sides for which a connection has not been established in advance.

Based on the above, by using the position identification technology using radio waves to acquire the movement information of the person whose position is specified and providing the acquired position and movement information to an unspecified number of people, an accident can be caused. There is a problem that we want to reduce. It should be noted that such a problem is particularly remarkable at an intersection where an unspecified number of people with different means of transportation come and go.

The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to suppress the occurrence of an accident at an intersection by utilizing the transmission and reception of radio waves.

The present invention has been made to solve the above-mentioned problems, and can be realized as the following forms.

(1) According to one embodiment of the present invention, a detection and notification system is provided. This detection / notification system includes a notification control unit that receives radio waves and controls a notification device, a first transmitter installed near the intersection and capable of transmitting a first radio wave within the first communication range, and the above-mentioned. A second transmitter installed near the intersection and capable of transmitting a second radio wave in a second communication range narrower than the first communication range, and a portable transmitter / receiver with the first radio wave. A transmitter / receiver that receives the second radio wave and transmits the third radio wave to the notification control unit is provided, and the first transmitter and the second transmitter have at least a communication range of each other. The transmitter / receiver partially overlaps, and the transmitter / receiver transmits the third radio wave according to the reception status of the first radio wave and the second radio wave and the movement speed classification of the transmitter / receiver. When the presence / absence is changed and the notification control unit receives the third radio wave, the notification control unit notifies using the notification device.

When this configuration is used, the notification by the alarm installed at the intersection is controlled by the transmission and reception of each radio wave. Therefore, even if the driver of a car trying to enter the intersection cannot directly see the pedestrians entering the intersection from other directions, the notification of the alarm can recognize the approach to the intersection such as pedestrians. .. Further, depending on the reception situation in which the transmitter / receiver combines the reception of the first radio wave and the second radio wave having different communication ranges and partially overlapping, and the moving speed classification of the transmitter / receiver, the first The radio wave of 3 is transmitted. By receiving the third radio wave, the notification control unit can control the notification by the notification device in consideration of the approach of the carrier of the transmitter / receiver to the intersection and the time until the approach. As a result, since the entry of automobiles and the like entering the intersection is restricted only when notification is required, the occurrence of accidents at the intersection is suppressed without unnecessarily restricting the entry of automobiles at the intersection. In addition, by using this system for intersections, it is possible to realize high functionality of intersections and to realize intersections without traffic signals.

(2) In the detection / notification system of the above aspect, the transmitter / receiver has a speed sensor that detects the speed of the transmitter / receiver, and the speed of the transmitter / receiver detected by the speed sensor is transmitted to the third radio wave. Information may be included.
According to this configuration, in addition to the position of the carrier of the transmitter / receiver specified by the transmission / reception of each radio wave, the moving speed of the carrier is also taken into consideration when the notification is performed by the alarm. As a result, the time for restricting the entry of a vehicle or the like entering the intersection from a direction different from that of the carrier is appropriately set, so that it is not necessary to restrict the entry of the vehicle or the like into the intersection unnecessarily.

(3) In the detection / notification system of the above aspect, the transmitter / receiver has a speed sensor that detects the speed of the transmitter / receiver, and the moving speed of the transmitter / receiver is based on the speed of the transmitter / receiver detected by the speed sensor. The division may be estimated.
According to this configuration, it is possible to suppress the occurrence of an accident at an intersection without performing unnecessary operations such as pre-registration as a movement speed classification.

(4) In the detection / notification system of the above aspect, the speed sensor may be a gyro sensor.
According to this configuration, the moving speed of the carrier of the transmitter / receiver can be detected inexpensively and easily.

(5) In the detection / notification system of the above aspect, the movement speed classification of the transmitter / receiver is divided into a pedestrian mode in which the transmitter / receiver is carried and moved on foot, and a bicycle mode in which the transmitter / receiver is carried and moved by bicycle. The transmitter / receiver has a reception unit that accepts registration of whether the moving speed category is one of the pedestrian mode and the bicycle mode, and the transmitter / receiver is the pedestrian mode. When both the first radio wave and the second radio wave are received at the same time, the third radio wave is transmitted, and in the case of the bicycle mode, when the first radio wave is received, the third radio wave is transmitted. Radio waves may be transmitted.
According to this configuration, a transmitter / receiver carried by a bicycle driver whose speed is faster than a pedestrian can be detected by a first radio wave having a communication range wider than that of the second radio wave. Therefore, when the driver of the bicycle, whose moving speed is faster than that of the pedestrian, approaches the intersection, the notification control unit can execute the notification by the notification device earlier than when the pedestrian approaches. As a result, it is possible to further suppress the occurrence of accidents between the bicycle and a vehicle entering the intersection from another direction.

(6) In the detection / notification system of the above aspect, the first transmitter transmits the first radio wave at intervals of 0.5 seconds or less, and the second transmitter sends the second radio wave to 0. .The first radio wave is transmitted at intervals of 5 seconds or less, and the transmitter / receiver uses the reception conditions of the first radio wave and the second radio wave received within the time slot of 1 second. The reception of the third radio wave is determined, and the notification control unit uses the reception status of the third radio wave within the time slot of 1 second to determine the reception of the third radio wave. A reception determination may be made.
The distance traveled by pedestrians and bicycles at the transmission interval of each radio wave of this configuration is sufficiently shorter than the distance to the intersection. Therefore, it is possible to judge "reception" even when the radio wave strength is weak by increasing the reception opportunities in the same time slot. In particular, since the radio wave intensity is weak at the boundary of the radio wave range, it is possible to judge "reception" earlier after entering the radio wave range, resulting in faster notification and support for bicycles faster than pedestrians. be able to.

(7) In the detection / notification system of the above aspect, the first transmitter transmits the first radio wave at intervals of 0.1 seconds, and the second transmitter transmits the second radio wave to 0. Transmission may be performed at intervals of 1 second, and the transmitter / receiver may transmit the third radio wave at intervals of 0.1 seconds.
By shortening the transmission interval of radio waves, the reception opportunity within the same time slot increases, and it is possible to cope with a bicycle with a higher speed.

(8) In the detection / notification system of the above aspect, the first transmitter transmits the first radio wave using Bluetooth Low Energy, and the second transmitter uses the Bluetooth Low Energy to transmit the second radio wave. The transmitter / receiver is a smartphone or a mobile phone carried by the mobile body, and may transmit / receive each radio wave using Bluetooth.
This system is capable of wireless communication without electrical wiring, and is constructed as an inexpensive and easy-to-prepare system.

(9) In the detection / notification system of the above aspect, the first communication range may have a radius of 10 m or less, and the second communication range may have a radius of 2 m or less.
According to this configuration, since the first communication range and the second communication range are not too narrow, the transmitter / receiver carried by a pedestrian or the like can sufficiently receive the first radio wave and the second radio wave. Further, since the first communication range and the second communication range are not too wide, the erroneous transmission of the third radio wave is eliminated, and the power consumption when the first transmitter and the second transmitter transmit the radio wave is suppressed. Will be done. As a result, this system can detect the carrier of the transmitter / receiver such as a pedestrian approaching the intersection while suppressing the power consumption of the entire system.

(10) According to another embodiment of the present invention, a detection and notification method is provided. In this detection and notification method, the first transmitter installed near the intersection transmits the first radio wave to the first communication range, and the second transmitter installed near the intersection is the second in the second communication range. The first transmission step of transmitting the radio wave of 2, the reception step in which the portable transmitter / receiver receives at least one of the first radio wave and the second radio wave, and the transmitter / receiver after the radio wave reception step. However, the second communication range includes a second transmission step of transmitting a third radio wave and a notification step of notifying using a notification device when the third radio wave is received, and the second communication range is the first. It is narrower than the communication range, and at least a part thereof overlaps with the first communication range. In the radio wave transmission step, the reception status of the first radio wave and the second radio wave and the transmitter / receiver The presence or absence of transmission of the third radio wave is changed according to the movement speed classification.

The present invention can be realized in various aspects, for example, a detection / notification system, a traffic system, a traffic management system, a system including these, a control method for controlling these devices, and a detection / notification method. It can be realized in the form of a traffic management method, a computer program for executing these devices and methods, a server device for distributing the computer program, a non-temporary storage medium for storing the computer program, and the like.

It is a schematic diagram of the detection notification system as an embodiment of the present invention. It is a schematic block diagram of a detection report system. It is explanatory drawing of the input / output part in the smartphone at the time of attribute registration. It is explanatory drawing of the input / output part in the smartphone at the time of attribute registration. It is explanatory drawing of the input / output part in the smartphone at the time of attribute registration. It is explanatory drawing of the reception determination using a time slot. It is explanatory drawing about the information which contains the 3rd radio wave. It is explanatory drawing about the information which contains the 3rd radio wave. It is a flowchart of the detection report method of this embodiment. The detection and notification system is a list for each radio wave. It is explanatory drawing of the positional relationship between each transmitter and an intersection, and the lighting time of a pedestrian light. It is explanatory drawing of the positional relationship between each transmitter and an intersection, and the lighting time of a bicycle light.

<Embodiment>
FIG. 1 is a schematic diagram of a detection and notification system 100 as an embodiment of the present invention. The detection / notification system 100 notifies the driver DR of the automobile entering the intersection CR that the pedestrian WL carrying the smartphones 40 and 40a and the bicycle driver CY are approaching the intersection CR using the notification device 30. It is a system to do. In the state shown in FIG. 1, the building BD forms a blind spot with respect to the driver DR of the automobile, so that the driver DR cannot directly see the pedestrian WL.

As shown in FIG. 1, the detection / notification system 100 includes a first transmitter 10 and a second transmitter 20 installed near the intersection CR, and a smartphone (transmitter / receiver) carried by a pedestrian WL and a bicycle driver CY. ) 40, 40a, and a notification device 30 having a pedestrian light 36 and a bicycle light 37 for restricting a vehicle entering the intersection CR. The first transmitter 10 and the second transmitter 20 of the present embodiment are BLE beacons (Bluetooth Low Energy Beacon) embedded in the ground. The first transmitter 10 transmits the first radio wave EW1 to the first communication range AR1. The second transmitter 20 transmits the second radio wave EW2 to the second communication range AR2, which is narrower than the first communication range AR1. As shown in FIG. 1, the entire range of the second communication range AR2 is included in the first communication range AR1.

The smartphones 40 and 40a are portable transmitters / receivers capable of receiving the first radio wave EW1 and the second radio wave EW2 and transmitting the third radio wave EW3 to the notification device 30. The smartphones 40 and 40a transmit and receive each radio wave EW1 to EW3 using the Bluetooth communication standard. The smartphones 40 and 40a have the third radio wave EW3 to the notification device 30 according to the reception status of the first radio wave EW1 and the second radio wave EW2 and the attributes set in advance for each of the smartphones 40 and 40a. Change whether or not to send. The attributes preset for each of the smartphones 40 and 40a of the present embodiment indicate the means of transportation of the carrier carrying each of the smartphones 40 and 40a, and for example, the pedestrian mode for walking or moving by bicycle. Bicycle mode etc. exist.

FIG. 2 is a schematic block diagram of the detection / notification system 100. As shown in FIG. 2, the first transmitter 10 includes a radio wave transmission unit 11 for transmitting the first radio wave EW1 and a battery 12 for supplying electric power to the radio wave transmission unit 11. The radio wave transmission unit 11 of the present embodiment transmits the first radio wave EW1 at intervals of 0.1 seconds. Further, the first communication range AR1 of the first transmitter 10 is a range within a radius of 5 m centered on the radio wave transmitting unit 11.

Like the first transmitter 10, the second transmitter 20 includes a radio wave transmitting unit 21 that transmits the second radio wave EW2 and a battery 22 that supplies electric power to the radio wave transmitting unit 21. The radio wave transmission unit 21 of the present embodiment transmits the second radio wave EW2 at intervals of 0.1 seconds. Further, the second communication range AR2 of the second transmitter 20 is a range within a radius of 1 m centered on the radio wave transmitting unit 21.

The smartphone 40 receives input from a CPU (Central Processing Unit) 41 that executes various functions, a ROM (Read Only Memory) 42, a RAM (Randam Access Memory) 43, and a storage unit 44 that stores various information. It includes an input / output unit 45 that outputs images and sounds, a transmission / reception unit 46 that transmits and receives each radio wave using Bluetooth, and a gyro sensor (speed sensor) 47 that detects the angular speed around the three axes of the smartphone 40. ..

The CPU 41 is connected to the ROM 42 and the RAM 43, and by expanding and executing the computer program stored in the ROM 42 in the RAM 43, the CPU 41 serves as an attribute registration unit 411, a reception determination unit 412, a transmission determination unit 413, and an information generation unit 414. Function. The attribute registration unit 411 registers the attributes of the carrier of the smartphone 40 by receiving a predetermined input via the input / output unit 45. The input / output unit 45 accepts operations as an electrostatic touch panel and displays various images as a monitor. The attribute registration unit 411 and the input / output unit 45 correspond to the reception unit.

3 to 5 are explanatory views of the input / output unit 45 in the smartphone 40 at the time of attribute registration. FIG. 3 shows each icon IC1 to IC4 on the main menu screen displayed on the input / output unit 45 at the time of attribute registration. In the present embodiment, the application of the "pedestrian / bicycle notification system" is installed in advance on the smartphone 40, and when a predetermined operation is performed, the screen transitions to the main menu screen shown in FIG. When the carrier selects (touches) each icon IC1 to IC4 displayed on the input / output unit 45 while the main menu screen is displayed, the attribute registration unit 411 is associated with each icon IC1 to IC4. Perform the processing.

When the icon IC1 or the icon IC2 is selected, the attribute registration unit 411 recognizes that the carrier of the smartphone 40 is a pedestrian WL or a bicycle driver CY, and registers the attribute as a pedestrian mode or a bicycle mode. , Stored in the storage unit 44. After registering the attribute, the attribute registration unit 411 transitions to the radio wave reception screen (FIG. 4) for starting reception of radio waves. On the radio wave reception screen, a display such as "No radio wave reception" and two icons IC5 and IC6 indicating the radio wave status of the first radio wave EW1 and the second radio wave EW2 received by the smartphone 40 are displayed. .. When the icon IC 5 is selected, the attribute registration unit 411 shifts to a state in which the first radio wave EW1 and the second radio wave EW2 are not received. When the icon IC 6 is selected, the attribute registration unit 411 transitions to the main menu screen shown in FIG.

When the icon IC3 on the main menu screen shown in FIG. 3 is selected, the attribute registration unit 411 transitions to the basic setting screen (FIG. 5) that accepts the input of the basic settings of the carrier of the smartphone 40. When the icon IC7 is selected on the basic setting screen, the attribute registration unit 411 transitions to a screen where detailed personal information of the carrier of the smartphone 40 can be input. On the screen after the transition, the attribute registration unit 411 displays "no designation", "children", and "elderly people" described later together with the explanation of FIG. 8 as more detailed information on the carrier of the smartphone 40 from the pedestrian mode and the bicycle mode. , "Support required", and "Nursing care required" are accepted. "Not specified" is a case where detailed information input is not accepted. The information included in the third radio wave EW3, which will be described later, differs depending on the registered detailed information.

When the icon IC 8 is selected, the attribute registration unit 411 transitions to a screen where a time slot TS for determining reception of the first radio wave EW1 and the second radio wave EW2 can be set. The details of the time slot TS will be described with reference to FIG. 6 described later.

When the icon IC 9 on the basic setting screen is selected, the attribute registration unit 411 saves the selected settings of the icons IC 7 and IC 8 and stores them in the storage unit 44. The function when the icon IC6 on the basic setting screen is selected is the same as when the icon IC6 on the radio wave receiving screen shown in FIG. 4 is selected. When the icon IC4 on the main menu screen shown in FIG. 3 is selected, the attribute registration unit 411 terminates the application of the "pedestrian / bicycle notification system".

The reception determination unit 412 (FIG. 2) determines the reception of the first radio wave EW1 and the second radio wave EW2 by using the first radio wave EW1 and the second radio wave EW2 received via the transmission / reception unit 46. The reception determination unit 412 of the present embodiment defines the time slot TS in which the time is divided into 1 second, and when the first radio wave EW1 or the second radio wave EW2 is received even once between one time slot TS, the first radio wave EW2 is received. It is determined that the radio wave EW1 or the second radio wave EW2 of the above has been received. Further, the reception determination unit 412 stores the time of the first radio wave EW1 received first and the time of the second radio wave EW2 received first in the storage unit 44.

FIG. 6 is an explanatory diagram of reception determination using the time slot TS. FIG. 6 shows three time slot TSs as an example, a period m, (m + 1), (m + 2), a first radio wave EW1 transmitted every 0.1 seconds, and a first radio wave received by the smartphone 40. The radio wave EW1 of the above and the determination result of the reception determination unit 412 are shown. As shown in FIG. 6, the reception determination unit 412 determines that the determination result of the period m in which the first radio wave EW1 could not be received at all is not received. On the other hand, the reception determination unit 412 determines that the determination result of the period (m + 1) in which the first radio wave EW1 is received only once and the period (m + 2) in which the first radio wave EW1 is received five times is received. The reception determination unit 412 determines the second radio wave EW2 as well as the first radio wave EW1.

The transmission determination unit 413 (FIG. 2) responds to the reception status of the first radio wave EW1 and the second radio wave EW2 determined by the reception determination unit 412 and the attributes registered by the attribute registration unit 411. It is determined whether or not the third radio wave EW3 is transmitted to the notification device 30. When the transmission determination unit 413 determines that both the first radio wave EW1 and the second radio wave EW2 have been received when the registered attribute is the pedestrian mode, the transmission determination unit 413 sends the notification device 30 to the notification device 30. The transmission of the radio wave EW3 of 3 is determined. On the other hand, when the registered attribute is the bicycle mode, the transmission determination unit 413 determines that the first radio wave EW1 has been received regardless of the reception status of the second radio wave EW2. The transmission of the third radio wave EW3 to 30 is determined.

7 and 8 are explanatory views of information included in the third radio wave EW3. FIG. 7 shows the relationship between the Major value and the Minor value of the second radio wave EW2 received by the smartphone 40 and the Major value and the Minor value of the third radio wave EW3 transmitted from the smartphone 40 in the pedestrian mode. It is shown. FIG. 8 shows the relationship between the Major value and the Minor value of the first radio wave EW1 received by the smartphone 40a and the Major value and the Minor value of the third radio wave EW3 transmitted from the smartphone 40a in the bicycle mode. It is shown. Since all of the second communication range AR2 of the present embodiment is included in the first communication range AR1, in FIG. 7, the Major value and the Minor value of the first radio wave EW1 received by the smartphone 40 are shown. Is omitted. The transmission determination unit 413 determines the Major value and the Minor value shown in FIGS. 7 and 8 according to the attributes registered by the attribute registration unit 411 and the reception status of the first radio wave EW1 and the second radio wave EW2. It is determined whether or not the third radio wave EW3 including the transmission is transmitted. As shown in FIGS. 7 and 8, the Minor value changes depending on the detailed classification of the carrier.

When the transmission determination unit 413 determines the transmission of the third radio wave EW3, the information generation unit 414 (FIG. 2) generates the movement information of the smartphone 40. The information generation unit 414 uses the detected value of the gyro sensor 47 and the time when the first radio wave EW1 and the second radio wave EW2 stored in the storage unit 44 are received as a part of the movement information. The moving speed (moving speed) and the moving direction of the carrier of the smartphone 40 are generated. The information generation unit 414 includes the movement information in the information transmitted by the third radio wave EW3 and transmits it to the notification device 30 via the transmission / reception unit 46. The information generation unit 414 transmits the third radio wave EW3 at intervals of 0.1 seconds. The information generation unit 414 of the present embodiment continues to transmit the third radio wave EW3 for a predetermined time set in advance even if the first radio wave EW1 and the second radio wave EW2 are not received after being received. The movement information may include various information related to movement (for example, movement route, movement means, etc.) in addition to the movement speed and movement direction exemplified here.

The notification device 30 includes a pedestrian light (notifier) 36 and a bicycle light (notifier) 37, and a pedestrian light 36 and a bicycle light 37, which are turned on to alert the driver of the vehicle to the approach of the intersection CR. The CPU 31 that controls lighting, the ROM 32, the RAM 33, the storage unit 34 that stores the control information of the pedestrian light 36 and the bicycle light 37, and the reception unit 35 that receives the third radio wave EW3 transmitted from the smartphone 40. , Is equipped. Hereinafter, the pedestrian light 36 and the bicycle light 37 are collectively referred to as “lights 36, 37”. When the pedestrian light 36 is turned on, an image imagining that entry is prohibited is visually recognized because there are pedestrians in the blind spot. When the bicycle light 37 is turned on, an image imagining that entry is prohibited is visually recognized because there is a bicycle in the blind spot.

The CPU 31 is connected to the ROM 32 and the RAM 33, and functions as a reception determination unit 311 and a notification control unit 312 by expanding and executing a computer program stored in the ROM 32 in the RAM 33. When the reception determination unit 311 of the present embodiment receives the third radio wave EW3 even once during the 0.5 second time slot TS stored in the storage unit 34, the reception determination unit 311 determines that the determination result is received.

When the notification control unit 312 determines that the reception determination unit 412 has received the third radio wave EW3, the notification control unit 312 controls the lighting of the lights 36 and 37 according to the third radio wave EW3. When the notification control unit 312 does not receive the third radio wave EW3, neither the pedestrian light 36 nor the bicycle light 37 is turned on. When the notification control unit 312 determines that the reception determination unit 412 has received the third radio wave EW3, the notification control unit 312 lights at least one of the pedestrian light 36 and the bicycle light 37 according to the information contained in the third radio wave EW3. Let me. The notification control unit 312 turns on the pedestrian light 36 when the attribute setting of the smartphone 40 that has transmitted the third radio wave EW3 is the pedestrian mode. On the other hand, the notification control unit 312 turns on the bicycle light 37 when the attribute setting of the smartphone 40a that has transmitted the third radio wave EW3 is the bicycle mode. When the notification control unit 312 receives a plurality of third radio waves EW3 corresponding to the pedestrian mode and the bicycle mode, the notification control unit 312 turns on both the pedestrian light 36 and the bicycle light 37.

After the lights 36 and 37 are turned on, the notification control unit 312 continues to turn on the lights 36 and 37 for a predetermined time even if the third radio wave EW3 is not received after being received. The notification control unit 312 stops lighting the lights 36 and 37 when a predetermined time has elapsed after the reception of the third radio wave EW3 is stopped.

FIG. 9 is a flowchart of the detection / reporting method of the present embodiment. In the detection / notification flow shown in FIG. 9, the detection / notification flow of FIG. 9 is performed for each of the carriers of the plurality of smartphones 40 and 40a.

In the detection report flow of FIG. 9, first, the attribute registration unit 411 of the smartphone 40 registers the attributes of the carrier by accepting the operation by the carrier of the smartphone 40 (step S1). Next, a first transmission step in which the first transmitter 10 transmits the first radio wave EW1 to the first communication range AR1 and the second transmitter 20 transmits the second radio wave EW2 to the second communication range AR2. Is performed (step S2).

The reception determination unit 412 of the smartphone 40 determines whether or not the first radio wave EW1 is received (step S3). In this embodiment, since the first communication range AR1 includes all of the second communication range AR2, the reception determination unit 412 determines the reception of the second radio wave EW2 until the first radio wave EW1 is received. However, in another embodiment, the reception determination of the second radio wave EW2 may be performed. When the reception determination unit 412 determines that the first radio wave EW1 has not been received (step S3: NO), the reception determination unit 412 subsequently waits for the reception of the first radio wave EW1.

When the reception determination unit 412 determines that the first radio wave EW1 has been received (step S3: YES), the transmission determination unit 413 determines whether or not the attribute registered by the attribute registration unit 411 is in the pedestrian mode. Is determined (step S4). Further, the transmission determination unit 413 stores the time when the first radio wave EW1 is first received at the time of determining the attribute. When it is determined that the attribute registered by the attribute registration unit 411 is not the pedestrian mode, that is, the attribute setting is the bicycle mode (step S4: NO), the processes after step S6 are performed.

When it is determined that the attribute is the pedestrian mode (step S4: YES), the reception determination unit 412 determines whether or not the second radio wave EW2 is being received (step S5). When the reception determination unit 412 determines that the second radio wave EW2 has not been received (step S5: NO), the reception determination unit 412 subsequently waits for the reception of the second radio wave EW2. The processing of steps S3 and S5 corresponds to the receiving process.

When the reception determination unit 412 determines that the second radio wave EW2 has been received (step S5: YES), the information generation unit 414 determines the time and gyro at the time of receiving the first radio wave EW1 and the second radio wave EW2. Using the detected value of the sensor 47, the movement information of the carrier of the smartphone 40 is generated (step S6). The information generation unit 414 performs a second transmission step of transmitting a third radio wave EW3 having a Major value and a Minor value as shown in FIGS. 7 and 8, including the generated information (step S7).

The reception determination unit 311 of the notification device 30 determines reception of the third radio wave EW3 (step S8). For convenience, the reception determination of the reception determination unit 311 is described in step S8 of the detection notification flow of FIG. 9, but the first transmitter 10 and the second transmitter 20 are the first radio waves EW1 and the second. It is always performed in the same manner as the transmission of the radio wave EW2. When the reception determination unit 311 determines that the third radio wave EW3 has not been received (step S8: NO), the reception determination unit 311 subsequently waits for the reception of the third radio wave EW3.

When the reception determination unit 311 determines that the third radio wave EW3 has been received (step S8: YES), the notification control unit 312 has the attribute of the carrier of the smartphone 40 included in the third radio wave EW3 as a pedestrian. It is determined whether or not the mode is set (step S9). When the notification control unit 312 determines that the attribute is the pedestrian mode (step S9: YES), the notification control unit 312 turns on the pedestrian light 36 (step S10). The notification control unit 312 sets the lighting time of the pedestrian light 36 according to the movement information of the pedestrian WL included in the third radio wave EW3.

FIG. 10 is a list of each radio wave transmitted and received by the detection and notification system 100. As shown in FIG. 10, a first radio wave EW1 transmitted from the first transmitter 10, a second radio wave EW2 transmitted from the second transmitter 20, and a third radio wave transmitted from the smartphone 40. The radio wave transmission interval with and from the EW3 is 0.1 seconds. The installation positions of the first transmitter 10 and the second transmitter 20 are 6 m before the intersection CR (FIG. 1). The transmitted radio wave intensity of the first radio wave EW1 is −20 dBm, and the transmitted radio wave strength of the second radio wave EW2 is −40 dBm. The first communication range AR1 of the first transmitter 10 is within a radius of 5 m, and the second communication range AR2 of the second transmitter 20 is within a radius of 1 m. The radio wave intensity threshold value of the first radio wave EW1 and the second radio wave EW2 that can be received by the smartphone 40 is −120 dBm.

The lighting time of the pedestrian light 36 after the loss of reception when the notification device 30 has stopped receiving the third radio wave EW3 is 1 second, and the lighting time of the bicycle light 37 after the loss of reception is 0.5. Seconds. It should be noted that the lighting time after the loss of reception is the case where the detailed setting is "not specified" at the time of attribute registration in the smartphone 40.

FIG. 11 is an explanatory diagram of the positional relationship between the transmitters 10 and 20 and the intersection CR and the lighting time of the pedestrian light 36. In FIG. 11, a solid line representing a distance is shown on the lower side, and a broken line representing the time axis is shown on the upper side. As shown in FIG. 11, when the pedestrian WL approaches from the installation position of the first transmitter 10 to the intersection CR, it passes through the second communication range AR2. When the pedestrian WL enters the second communication range AR2, the smartphone 40 of the pedestrian WL receives the second radio wave EW2. When the smartphone 40 receives the second radio wave EW2, the smartphone 40 continues to transmit the third radio wave EW3 during the reception period Rt1 of the second radio wave EW2 of the smartphone 40. Since the time slot TS of the smartphone 40 is 1 second, there is a maximum time lag of 1 second from the reception of the second radio wave EW2 to the transmission of the third radio wave EW3. The smartphone 40 continues to transmit the third radio wave EW3 for one second from the loss of reception of the second radio wave EW2. Therefore, the time for transmitting the third radio wave EW3 is (Rt1 + 1) seconds.

When the notification device 30 receives the third radio wave EW3, the notification device 30 turns on the pedestrian light 36 according to the pedestrian mode, which is an attribute of the smartphone 40 included in the third radio wave EW3. The notification device 30 keeps turning on the pedestrian light 36 during the reception period Rt2 of the third radio wave EW3. Since the time slot TS of the notification device 30 is 0.5 seconds as in the smartphone 40, the notification device 30 receives the third radio wave EW3 until the pedestrian light 36 is turned on. There is a time lag of up to 0.5 seconds. The notification device 30 keeps turning on the pedestrian light 36 for 1 second after the loss of reception of the third radio wave EW3.

In the process of step S9 of FIG. 9, when the notification control unit 312 determines that the attribute is not the pedestrian mode, that is, the attribute setting is the bicycle mode (step S9: NO), the bicycle light 37 is turned on. (Step S10). The notification control unit 312 sets the lighting time of the bicycle light 37 according to the movement information of the bicycle driver CY included in the third radio wave EW3. The process from step S8 to step S11 corresponds to the notification step.

FIG. 12 is an explanatory diagram of the positional relationship between the transmitters 10 and 20 and the intersection CR and the lighting time of the bicycle light 37. Similar to FIG. 11, FIG. 12 shows a solid line representing the distance on the lower side and a broken line representing the time axis on the upper side. As shown in FIG. 12, when the bicycle driver CY approaches the intersection CR, he / she enters the first communication range AR1. At the time of approach, the bicycle driver CY smartphone 40a receives the first radio wave EW1. When the smartphone 40a receives the first radio wave EW1, the smartphone 40a continues to transmit the third radio wave EW3 during the reception period Rt3 of the first radio wave EW1 of the smartphone 40a. Since the time slot TS of the smartphone 40a is 1 second, there is a maximum time lag of 1 second from the reception of the first radio wave EW1 to the transmission of the third radio wave EW3. The smartphone 40a continues to transmit the third radio wave EW3 for one second from the loss of reception of the first radio wave EW1. Therefore, the time for transmitting the third radio wave EW3 is (Rt3 + 1) seconds.

When the notification device 30 receives the third radio wave EW3, the notification device 30 turns on the bicycle light 37 according to the bicycle mode which is an attribute of the smartphone 40a included in the third radio wave EW3. The notification device 30 keeps turning on the bicycle light 37 during the reception period Rt4 of the third radio wave EW3. Since the time slot TS of the notification device 30 is 0.5 seconds, the notification device 30 has a maximum time lag of 0.5 seconds from the reception of the third radio wave EW3 until the bicycle light 37 is turned on. Occurs. In the bicycle mode, the notification device 30 keeps turning on the bicycle light 37 for 0.5 seconds after the loss of reception of the third radio wave EW3.

When the process of step S10 or step S11 of FIG. 9 is performed, it is determined whether or not to end the detection notification flow. If it is determined that the detection notification flow is not terminated (step S12: NO), the processes after step S3 are repeated. If it is determined to end the detection report flow (step S12: YES), the detection report flow ends. In the detection report flow of FIG. 9, the end determination process is shown as step S12 for convenience, but the end determination of the detection report flow may be performed during any process.

As described above, in the detection / notification system 100 of the present embodiment, the smartphones 40 and 40a receive the first radio wave EW1 and the second radio wave EW2, and transmit the third radio wave EW3 to the notification device 30. It is possible. At least a part of the first communication range AR1 to which the first radio wave EW1 is transmitted and the second communication range AR2 to which the second radio wave EW2 is transmitted overlap. The smartphones 40 and 40a determine whether or not to transmit the third radio wave EW3 according to the reception status of the first radio wave EW1 and the second radio wave EW2 and the attributes registered in each of the smartphones 40 and 40a. .. When the notification control unit 312 of the notification device 30 receives the third radio wave EW3, the lights 36 and 37 are turned on. That is, when the detection / notification system 100 of the present embodiment is used, the lighting of the lights 36 and 37 installed at the intersection CR is controlled by the transmission / reception of the radio waves EW1 to EW3. Therefore, the driver DR of the automobile trying to enter the intersection CR should visually recognize the lights 36 and 37 even if the pedestrian WL or the bicycle entering the intersection CR from another direction cannot be directly visually recognized by the building BD or the like. Can recognize the approach of a pedestrian WL or a bicycle. Further, the reception status of the smartphones 40, 40a by combining the reception of the first radio wave EW1 and the second radio wave EW2, which have different communication ranges and partially overlap, and the carrier of the smartphones 40, 40a. The third radio wave EW3 is transmitted according to the moving speed classification. By receiving the third radio wave EW3, the notification control unit 312 turns on the lights 36 and 37 in consideration of the approach of the carrier of the smartphones 40 and 40a to the intersection CR and the time until the approach. As a result, the entry of automobiles and the like entering the intersection CR is restricted only when necessary, so that the occurrence of accidents at the intersection is suppressed. Further, by using the detection / reporting system 100 of the present embodiment for the intersection CR, it is possible to realize the high functionality of the intersection CR and to realize the intersection CR without the traffic signal.

Further, the smartphones 40, 40a of the present embodiment include a gyro sensor 47 as a speed sensor for detecting the speed of the smartphones 40, 40a. The third radio wave EW3 transmitted from the smartphones 40, 40a contains information on the speed of the smartphones 40, 40a detected by the gyro sensor 47. Therefore, in the detection / reporting system 100 of the present embodiment, in addition to the position of the carrier of the smartphones 40, 40a specified by the transmission / reception of the radio waves EW1 to EW3, the moving speed of the carrier is also taken into consideration when the lights 36 and 37 are used. Light. As a result, the time for restricting the entry of the automobile or the like entering the intersection CR is appropriately set, so that it is not necessary to unnecessarily restrict the entry of the automobile or the like into the intersection CR.

Further, when the input / output unit 45 of the present embodiment receives the operation of the carrier of the smartphones 40, 40a, the attribute registration unit 411 registers the pedestrian mode or the bicycle mode as the attribute of the carrier of the smartphones 40, 40a. When the smartphone 40 receives both the first radio wave EW1 and the second radio wave EW2 when the attribute setting is the pedestrian mode, the smartphone 40 transmits the third radio wave EW3. On the other hand, when the smartphone 40a receives the first radio wave EW1 when the attribute setting is the bicycle mode, the smartphone 40a transmits the third radio wave EW3. That is, the detection / notification system 100 of the present embodiment detects the driver CY of the bicycle, which is faster than the pedestrian WL, by the first radio wave EW1 having a wider communication range than the second radio wave EW2. Therefore, the notification device 30 turns on the bicycle light 37 earlier than when the pedestrian WL approaches the intersection CR when the driver CY of the bicycle whose moving speed is faster than the pedestrian WL approaches the intersection CR. be able to. As a result, the contact between the automobile and the bicycle entering the intersection CR can be further suppressed.

Further, the first transmitter 10 of the present embodiment transmits the first radio wave EW1 at intervals of 0.1 seconds, and the second transmitter 20 transmits the second radio wave EW2 at intervals of 0.1 seconds. Then, the smartphones 40 and 40a transmit the third radio wave EW3 at intervals of 0.1 seconds. The notification control unit 312 determines the reception of the third radio wave EW3 by using the reception status of the third radio wave EW3 in the time slot TS for 1 second. The distance traveled by the pedestrian WL and the bicycle at the transmission interval of each radio wave EW1 to EW3 of the present embodiment is sufficiently shorter than the distance to the intersection CR. Therefore, it is possible to determine "reception" even when the radio wave strength is weak by increasing the reception opportunities in the same time slot TS. In particular, since the radio wave intensity is weak at the boundary of the radio wave range, it is possible to judge "reception" earlier than after entering the radio wave range, resulting in faster notification and support for bicycles faster than pedestrian WL. be able to.

Further, the first transmitter 10 and the second transmitter 20 of the present embodiment are BLE beacons that transmit the first radio wave EW1 and the second radio wave EW2 of the BLE. The smartphones 40 and 40a transmit and receive each radio wave EW1 to EW3 using the Bluetooth communication standard. Therefore, the first transmitter 10 and the second transmitter 20 can suppress the electric power for transmitting the radio wave. As a result, the detection / notification system 100 of the present embodiment is constructed as a system capable of wireless communication without electrical wiring and can be prepared inexpensively and easily.

Further, the first communication range AR1 of the present embodiment has a radius of 5 m or less, and the second communication range AR2 has a radius of 1 m or less. That is, since the first communication range AR1 and the second communication range AR2 are not too narrow, the smartphones 40 and 40a carried by the pedestrian WL and the bicycle driver CY transmit the first radio wave EW1 and the second radio wave EW2. Can be received sufficiently. Further, since the first communication range AR1 and the second communication range AR2 are not too wide, the erroneous transmission of the third radio wave EW3 is eliminated, and the first transmitter 10 and the second transmitter 20 are each radio wave EW1 and EW2. Power consumption when transmitting is suppressed. As a result, the detection / notification system 100 of the present embodiment can detect the pedestrian WL and the bicycle driver CY approaching the intersection CR while suppressing the power consumption of the entire system.

<Modification example>
The present invention is not limited to the above embodiment, and can be carried out in various embodiments without departing from the gist thereof, and for example, the following modifications are also possible.

<Modification 1>
The configuration, control content, and the like of the detection and notification system 100 of the above embodiment are examples, and can be variously modified. For example, the installation locations of the lights 36 and 37 and the first transmitter 10 and the second transmitter 20 can be deformed within the range near the intersection CR. The vicinity of the intersection CR means a range within 20 m from the end point of the intersection. The notification device 30 of the present embodiment is a device including both the lights 36 and 37 functioning as notification devices and the notification control unit 312, but the lights 36 and 37 and the notification control unit 312 are separate devices. It may be configured as. Further, two or more first transmitters 10 and second transmitters 20 may be installed. The detection / notification system 100 may include a third transmitter that transmits radio waves different from those of the first transmitter 10 and the second transmitter 20. In this case, the notification control unit 312 sets the lights 36 and 37 according to the reception status of the radio wave transmitted from the third transmitter, the first radio wave EW1, and the radio wave combined with the second radio wave EW2. You may control it. The notification device controlled by the notification control unit 312 may be a device (for example, a traffic signal) for visually recognizing a state change other than the lights 36 and 37, or a speaker or the like that outputs voice.

The first communication range AR1 of the above embodiment includes all of the second communication range AR2, but the first communication range AR1 and the second communication range AR2 are modified to the extent that they partially overlap. It is possible. The second communication range AR2 may have a range that does not overlap with the first communication range AR1. For example, when the position of the first transmitter 10 in FIG. 1 is closer to the intersection CR, the smartphones 40 and 40a transmit a fourth radio wave different from the third radio wave EW3 and transmit the fourth radio wave. The control performed by the received notification device 30 may be different. As a different control, the time for changing the lights 36 and 37 from lighting to extinguishing may be controlled with reference to the time when the fourth radio wave is received.

In the above embodiment, the notification device 30 receives the third radio wave EW3 and turns on the lights 36 and 37, but the smartphone 40 is different from the smartphone 40 that transmitted the third radio wave EW3, for example. May be good. In this case, the third radio wave EW3 transmitted by the smartphone 40a carried by the bicycle driver CY heading toward the intersection CR is received by the smartphone 40 of another pedestrian WL, the car driver DR, the car attachment, or the like. Then, the smartphone 40 may output an alarm sound. Further, the smartphone 40 attached to the automobile may receive the alarm, and the parts attached to the automobile may output various alarms (including control of the accelerator, brake, etc.). As described above, the notification control unit 312 that receives the third radio wave EW3 and performs notification may be provided on the smartphones 40, 40a, a mobile phone, or the like.

In the above embodiment, a part of the configuration realized by the hardware may be replaced with software, and conversely, a part of the configuration realized by the software may be replaced with the hardware. good.

<Modification 2>
The attribute registration unit 411 of the smartphones 40, 40a does not necessarily have to register the attributes of the carrier of each smartphone 40, 40a. In this case, the smartphones 40 and 40a transmit or not transmit the third radio wave EW3 according to the reception status of the first radio wave EW1 and the second radio wave EW2 and the movement speed classification of the carrier as a substitute for the attribute. May be changed. The movement speed classification of the carrier may be, for example, a classification in which the speeds of the smartphones 40, 40a detected by the gyro sensor 47 are divided into a plurality of speeds by one or more threshold values. In other words, the transmission determination unit 413 may estimate the moving speed classification of the smartphones 40, 40a from the speed detected by the speed sensor such as the gyro sensor 47. According to the detection and notification system of this modification, the smartphones 40 and 40a receive the speed detected by the speed sensor and the first radio wave EW1 and the second radio wave EW2 without activating the installed application. The third radio wave EW3 can be transmitted depending on the situation of. Therefore, the detection and notification system of the modified example can suppress the occurrence of an accident at the intersection CR without performing unnecessary operations. In the modified example, a transmitter / receiver that receives the first radio wave EW1 and the second radio wave EW2 and transmits the third radio wave EW3 by a program other than the application installed on the smartphone 40 constitutes a part of the detection / notification system. You may. The speed sensor for detecting the speed of the smartphones 40 and 40a may be a speed sensor other than the gyro sensor 47, and for example, an acceleration sensor or the like may be used.

The attribute registered by the attribute registration unit 411 is not limited to the pedestrian mode and the bicycle mode, and may include other modes. Further, the attributes registered in the smartphones 40, 40a and the like are not limited to the examples shown in FIGS. 7 and 8, and may be further classified by, for example, gender or age.

<Modification 3>
The first transmitter 10 and the second transmitter 20 may be radio wave transmitters other than the BLE beacon, and the first radio wave EW1 and the second radio wave EW2 may be used by using a well-known communication standard other than Bluetooth Low Energy. May be sent. Similarly, the smartphones 40, 40a may receive the first radio wave EW1 and the second radio wave EW2, or may transmit the third radio wave EW3, using a well-known communication standard other than Bluetooth. good. The Minor value and the Minor value of the radio waves EW1 to EW3 are not limited to the values shown in FIGS. 7 and 8, and can be deformed within a range in which the radio waves EW1 to EW3 can be identified.

In the above embodiment, as shown in FIG. 10, the time slot TS of the smartphones 40 and 40a is 1 second, and the time slot TS of the notification device 30 is 0.5 seconds. However, regarding the time slot TS, the time slot TS is It is deformable. For example, the time slot TS of the smartphones 40, 40a may be changed according to the registered attributes.

Similarly, regarding the lighting time after the loss of reception of the radio wave shown in FIG. 8, the position of the first transmitter 10 and the second transmitter 20 with respect to the intersection CR and the first communication range AR1 and the second communication range Different numerical values may be adopted depending on AR2. For example, the lighting time after reception and transmission may not be set (may be 0 seconds). Even if the attributes registered in the smartphones 40 and 40a are the same, the lighting time after reception and transmission may change according to the speed detected by the gyro sensor 47.

The first communication range AR1 may have a radius of 5 m or more, and the second communication range AR2 may have a radius of 1 m or more. The first communication range AR1 is preferably within a radius of 10 m, and the second communication range AR2 is preferably within a radius of 2 m. Further, the transmission interval of the first radio wave EW1 transmitted by the first transmitter 10, the second radio wave EW2 transmitted by the second transmitter 20, and the third radio wave EW3 transmitted by the smartphones 40 and 40a is 0. It may be a value other than 1 second.

Although this embodiment has been described above based on the embodiments and modifications, the embodiments described above are for facilitating the understanding of the present embodiment and do not limit the present embodiment. This aspect may be modified or improved without departing from its spirit and claims, and this aspect includes its equivalent. Further, if the technical feature is not described as essential in the present specification, it may be deleted as appropriate.

10 ... 1st transmitter 11 ... Radio wave transmitter of 1st transmitter 12 ... Battery of 1st transmitter 20 ... 2nd transmitter 21 ... Radio wave transmitter of 2nd transmitter 22 ... Battery of 2nd transmitter 30 ... Notification device 34 ... Storage unit of notification device 35 ... Receiver unit 36 ... Pedestrian light (notifier)
37 ... Bicycle light (notifier)
40, 40a ... Smartphone (transmitter / receiver)
44 ... Smartphone storage unit 45 ... Input / output unit (reception unit)
46 ... Transmitter / receiver 47 ... Gyro sensor (speed sensor)
100 ... Detection notification system 311 ... Reception judgment unit of notification device 312 ... Notification control unit 411 ... Attribute registration unit (reception unit)
412 ... Smartphone reception determination unit 413 ... Transmission determination unit 414 ... Information generation unit AR1 ... First communication range AR2 ... Second communication range BD ... Building CR ... Intersection CY ... Bicycle driver DR ... Car driver WL ... Pedestrian EW1 ... First radio wave EW2 ... Second radio wave EW3 ... Third radio wave IC1 to IC9 ... Icon Rt1 to Rt4 ... Reception period TS ... Time slot

Claims (11)

It is a detection and notification system,
A notification control unit that receives radio waves and controls the notification device,
The first transmitter installed near the intersection and capable of transmitting the first radio wave to the first communication range,
A second transmitter installed near the intersection and capable of transmitting a second radio wave to a second communication range narrower than the first communication range.
A portable transmitter / receiver including a transmitter / receiver that receives the first radio wave and the second radio wave and transmits a third radio wave to the notification control unit.
At least a part of the communication range of the first transmitter and the second transmitter overlaps with each other.
The transmitter / receiver changes the presence / absence of transmission of the third radio wave according to the reception status of the first radio wave and the second radio wave and the moving speed classification of the transmitter / receiver.
When the notification control unit receives the third radio wave, the notification control unit notifies the notification using the notification device, which is a detection / notification system. The detection and reporting system according to claim 1.
The transmitter / receiver
It has a speed sensor that detects the speed of the transmitter / receiver.
A detection notification system in which the third radio wave includes information on the speed of the transmitter / receiver detected by the speed sensor. The detection information system according to claim 1 or 2.
The transmitter / receiver
It has a speed sensor that detects the speed of the transmitter / receiver.
A detection notification system that estimates the moving speed classification of the transmitter / receiver from the speed of the transmitter / receiver detected by the speed sensor. The detection / reporting system according to claim 2 or 3.
The speed sensor is a detection and notification system that is a gyro sensor. The detection and reporting system according to any one of claims 1 to 4.
The movement speed classification of the transmitter / receiver includes a pedestrian mode in which the transmitter / receiver is carried and moved on foot, and a bicycle mode in which the transmitter / receiver is carried and moved by bicycle.
The transmitter / receiver
It has a reception unit that accepts registration of whether the movement speed classification is one of the pedestrian mode and the bicycle mode.
In the pedestrian mode, if both the first radio wave and the second radio wave are received at the same time, the third radio wave is transmitted.
A detection / notification system that transmits the third radio wave when the first radio wave is received in the bicycle mode. The detection and reporting system according to any one of claims 1 to 5.
The first transmitter transmits the first radio wave at intervals of 0.5 seconds or less.
The second transmitter transmits the second radio wave at intervals of 0.5 seconds or less, and the second transmitter transmits the second radio wave at intervals of 0.5 seconds or less.
The transmitter / receiver uses the reception conditions of the first radio wave and the second radio wave received within the time slot for one second, and the first radio wave and the second radio wave are used, respectively. Receive judgment of
The notification control unit is a detection / notification system that determines reception of the third radio wave using the reception status of the third radio wave within a time slot of 1 second. The detection and reporting system according to claim 6.
The first transmitter transmits the first radio wave at intervals of 0.1 seconds.
The second transmitter transmits the second radio wave at intervals of 0.1 seconds.
The transmitter / receiver is a detection / notification system that transmits the third radio wave at intervals of 0.1 seconds. The detection and reporting system according to any one of claims 1 to 7.
The first transmitter transmits the first radio wave using Bluetooth Low Energy, and the first transmitter transmits the first radio wave.
The second transmitter transmits the second radio wave using Bluetooth Low Energy, and the second transmitter transmits the second radio wave.
The transmitter / receiver
A smartphone or mobile phone carried by the mobile body.
A detection and notification system that sends and receives each radio wave using Bluetooth. The detection and reporting system according to claim 8.
The first communication range is a range having a radius of 10 m or less.
The second communication range is a detection / reporting system having a radius of 2 m or less. It is a detection and reporting method,
The first transmitter installed near the intersection transmits the first radio wave to the first communication range, and the second transmitter installed near the intersection transmits the second radio wave to the second communication range. The first transmission process and
A receiving step in which the portable transmitter / receiver receives at least one of the first radio wave and the second radio wave.
After the radio wave receiving step, the transmitter / receiver has a second transmission step of transmitting a third radio wave, and
When the third radio wave is received, it is provided with a notification step of notifying using a notification device.
The second communication range is narrower than the first communication range, and at least a part thereof overlaps with the first communication range.
In the radio wave transmission step, a detection / reporting method for changing the presence / absence of transmission of a third radio wave according to the reception status of the first radio wave and the second radio wave and the moving speed classification of the transmitter / receiver. .. It ’s a computer program,
The first transmitter installed near the intersection transmits the first radio wave to the first communication range, and the second transmitter installed near the intersection transmits the second radio wave to the second communication range. The first transmission function and
A receiving function in which a portable transmitter / receiver receives at least one of the first radio wave and the second radio wave, and
A second transmission function in which the transmitter / receiver transmits a third radio wave according to the radio wave received by the transmitter / receiver.
When the third radio wave is received, the computer is made to execute a notification function of notifying using a notification device.
The second communication range is narrower than the first communication range, and at least a part thereof overlaps with the first communication range.
The radio wave transmission function is a computer program that changes whether or not to transmit a third radio wave according to the reception status of the first radio wave and the second radio wave and the moving speed classification of the transmitter / receiver.

Images