Infrastructure Sensor and Management Systems

Abstract

To reduce workload in maintenance or adjustment of an infrastructure sensor while ensuring security.SOLUTION: An infrastructure sensor which is attached to a structure installed on a road and detects an object on the road, comprises: a detection unit that detects an object in a detection area established on the road; a wireless communication unit that can wirelessly communicate with a terminal; and a control unit that controls a wireless communication function of the wireless communication unit. When the detection unit has detected an object in a first access permission area established in a part of the detection area for permitting access of the terminal with the wireless communication function disabled, the control unit enables the wireless communication function.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present disclosure relates to infrastructure sensors and management systems. [Background technology]

[0002] Patent Document 1 discloses a radio wave sensor for traffic monitoring. The radio wave sensor for traffic monitoring (hereinafter also referred to as "infrastructure radio wave sensor") detects objects by emitting radio waves toward a road and receiving reflected waves from objects such as vehicles or pedestrians on the road. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2000-48296 Summary of the Invention [Problem to be solved by the invention]

[0004] To maintain or adjust an infrastructure radio wave sensor, a terminal device must be connected to the sensor via a wire. However, because the infrastructure radio wave sensor is installed at a high altitude, workers must climb to the high altitude to perform the maintenance or adjustment, which may require traffic restrictions. [Means for solving the problem]

[0005] An infrastructure sensor according to one embodiment of the present disclosure is attached to a structure installed on a road and detects objects on the road, and includes a detection unit that detects objects within a detection area set on the road, a wireless communication unit capable of wireless communication with a terminal, and a control unit that controls the wireless communication function of the wireless communication unit, and when the wireless communication function is disabled and the detection unit detects an object in a first access permission area set as part of the detection area to allow access by the terminal, the control unit enables the wireless communication function.

[0006] A management system according to one embodiment of the present disclosure includes an infrastructure sensor attached to a structure installed on a road and detecting objects on the road, and a terminal capable of wireless communication with the infrastructure sensor, wherein the infrastructure sensor includes a detection unit that detects objects within a detection area set on the road, a wireless communication unit capable of wireless communication with the terminal, and a control unit that controls the wireless communication function of the wireless communication unit, and when the wireless communication function is disabled and the detection unit detects an object in a first access permission area set as part of the detection area to allow access by the terminal, the control unit enables the wireless communication function.

[0007] The present disclosure can be realized not only as an infrastructure radio wave sensor and management system having the above-described characteristic configuration, but also as a setting method for an infrastructure radio wave sensor that includes steps representing the characteristic processing of the infrastructure radio wave sensor, as a computer program that causes a computer to execute the above-described method, or as a part of the infrastructure radio wave sensor as a semiconductor integrated circuit. [Effects of the Invention]

[0008] According to the present disclosure, it is possible to reduce the workload of maintaining or adjusting infrastructure sensors while ensuring security. [Brief explanation of the drawings]

[0009] [Figure 1] FIG. 1 is a diagram illustrating an example of use of an infrastructure sensor according to an embodiment. [Figure 2] FIG. 1 is a diagram illustrating an example of a configuration of a management system according to an embodiment. [Figure 3] FIG. 2 is a block diagram illustrating an example of a hardware configuration of an infrastructure sensor according to the embodiment. [Figure 4] FIG. 2 is a block diagram illustrating an example of a hardware configuration of a terminal according to the embodiment. [Figure 5]10 is a flowchart illustrating an example of a schedule management process of an infrastructure sensor according to the embodiment. [Figure 6] 10 is a flowchart illustrating an example of a process for determining whether to enable a wireless communication function of an infrastructure sensor according to the embodiment. [Figure 7] FIG. 2 is a diagram illustrating an example of a detection area of ​​an infrastructure sensor according to the embodiment. [Figure 8] 10 is a flowchart illustrating an example of a setting information access process of an infrastructure sensor according to the embodiment. [Figure 9] 10 is a flowchart illustrating an example of a sensor setting process of the terminal according to the embodiment. [Figure 10] FIG. 10 is a diagram showing an example of a restriction removal procedure screen. [Figure 11] FIG. 10 is a diagram illustrating an example of a restriction release success screen. [Figure 12] 10 is a flowchart illustrating an example of an extension request procedure display process of the terminal according to the embodiment. [Figure 13] FIG. 10 is a diagram showing an example of an extension request procedure screen. [Figure 14] FIG. 10 is a diagram illustrating an example of a screen in which the validity period has been successfully extended. DETAILED DESCRIPTION OF THE INVENTION

[0010] <Summary of Embodiments of the Present Disclosure> The following provides an outline of embodiments of the present disclosure.

[0011] (1) The infrastructure sensor according to this embodiment is attached to a structure installed on a road and detects objects on the road. The infrastructure sensor includes a detection unit that detects objects within a detection area set on the road, a wireless communication unit capable of wireless communication with a terminal, and a control unit that controls the wireless communication function of the wireless communication unit. When the detection unit detects an object in a first access permission area set as part of the detection area to allow access by the terminal while the wireless communication function is disabled, the control unit enables the wireless communication function. This eliminates the need for workers to climb to high places to perform maintenance or adjustment of the infrastructure sensor, thereby reducing the implementation of traffic restrictions. Furthermore, because the wireless communication function is not enabled unless the worker is located in the first access permission area, unauthorized access to the infrastructure sensor is prevented. This reduces the workload for maintaining or adjusting the infrastructure sensor while ensuring security.

[0012] (2) When the detection unit detects the object continuously for a preset period in the first access permission area while the wireless communication function is disabled, the control unit may enable the wireless communication function. This prevents unauthorized access even if a third party (hereinafter referred to as a "non-worker") attempts unauthorized access by accidentally entering the first access permission area unless the non-worker remains in the first access permission area.

[0013] (3) The infrastructure sensor may include a storage unit that stores setting information of the infrastructure sensor, and the control unit may operate in a setting restriction mode, when the wireless communication function is enabled, to permit transmission of the setting information stored in the storage unit to the terminal and restrict changes to the setting information. This restricts changes to the setting information even if wireless communication with the infrastructure sensor is enabled, thereby preventing unauthorized or unnecessary changes to the setting of the infrastructure sensor.

[0014] (4) When the wireless communication function is enabled, the control unit may execute an authentication process to authenticate a user of the terminal, and if the authentication of the user is successful, may operate in a setting permission mode that permits the setting information stored in the storage unit to be changed. This makes it possible to change the setting information only if the authentication process is successful, thereby preventing unauthorized or unnecessary setting changes of infrastructure sensors.

[0015] (5) The authentication process may include a process in which the control unit determines whether the detection unit detects an object in a second access permission area that is set as part of the detection area and is different from the first access permission area. This allows user authentication to be performed using an object detection function of an infrastructure sensor.

[0016] (6) When the terminal requests a transition from the setting restriction mode to the setting permission mode, the control unit may transmit, to the wireless communication unit, display request information requesting the terminal to display a screen prompting the user to move to the second access permission area, thereby presenting to the user the procedure required to transition from the setting restriction mode to the setting permission mode.

[0017] (7) The setting information may include parameters that define the detection area, which allows a user to set the detection area, an important setting item for an infrastructure sensor, while ensuring security.

[0018] (8) The control unit may disable the wireless communication function after a preset validity period has elapsed since the wireless communication function was enabled, thereby preventing the state in which wireless communication with the infrastructure sensor is enabled from being maintained for a long period of time.

[0019] (9) The control unit may extend the validity period when a request for extension of the validity period is received during an extension request reception period after the wireless communication function is enabled and before the validity period expires. This can prevent interruptions to work due to disconnection of wireless communication when maintenance or adjustment work on an infrastructure sensor takes time.

[0020] (10) The request for extension of the validity period may include a user being located in an extension request area that is set as part of the detection area, and the control unit may determine that the extension request has been accepted if the detection unit detects an object in the extension request area during the extension request acceptance period. This allows an extension of the validity period of wireless communication to be requested by utilizing an object detection function of an infrastructure sensor.

[0021] (11) When the extension request acceptance period begins, the control unit may transmit, to the wireless communication unit, second display request information requesting the terminal to display a screen prompting the user to move to the extension request area, thereby presenting the user with a procedure required to extend the valid period of wireless communication.

[0022] (12) The infrastructure sensor may further include a second communication unit capable of communicating with a management device, wherein the second communication unit receives schedule information defining a work permission period from the management device, and when the detection unit detects an object in the first access permission area within the work permission period, the control unit enables the wireless communication function that was disabled. This allows the wireless communication function of the infrastructure sensor to be enabled only during the work permission period in the schedule provided by the management device, further improving security.

[0023] (13) A management system according to this embodiment includes an infrastructure sensor attached to a structure installed on a road and detecting an object on the road, and a terminal capable of wireless communication with the infrastructure sensor. The infrastructure sensor includes a detection unit that detects an object within a detection area set on the road, a wireless communication unit capable of wireless communication with the terminal, and a control unit that controls the wireless communication function of the wireless communication unit. When the wireless communication function is disabled and the detection unit detects an object in a first access permission area set as part of the detection area to allow access by the terminal, the control unit enables the wireless communication function. This eliminates the need for workers to climb to high places to perform maintenance or adjustment of the infrastructure sensor, thereby reducing the implementation of traffic restrictions. Furthermore, because the wireless communication function is not enabled unless the worker is located in the first access permission area, unauthorized access to the infrastructure sensor is prevented. This reduces the workload of maintaining or adjusting the infrastructure sensor while ensuring security.

[0024] (14) The control unit may include a storage unit that stores setting information of the infrastructure sensor, and when the wireless communication function is enabled, the control unit operates in a setting restriction mode that allows transmission of the setting information stored in the storage unit to the terminal and restricts changes to the setting information, performs an authentication process to authenticate a user of the terminal in the setting restriction mode, and if the user authentication is successful, transitions to a setting permission mode that allows changes to the setting information stored in the storage unit, the authentication process including a process by the control unit determining whether the detection unit has detected an object in a second permission permission area that is set as part of the detection area and is different from the first permission permission area, and the terminal may include a display unit, and when the control unit operates in the setting restriction mode and the terminal receives a request from a user to change the setting information, the display unit may display a screen prompting the user to move to the second permission permission area. This makes it possible to present to the user a procedure required to transition from the setting restriction mode to the setting permission mode.

[0025] (15) The control unit may disable the wireless communication function when a preset validity period has elapsed since the wireless communication function was enabled, and may extend the validity period when a request to extend the validity period is received during an extension request acceptance period before the validity period has elapsed since the wireless communication function was enabled, the request to extend the validity period including a user being located in an extension request area set as part of the detection area, the terminal may include a display unit, and during the extension request acceptance period, the display unit may display a screen prompting the user to move to the extension request area. This makes it possible to present the user with a procedure required to extend the validity period of wireless communication before it expires.

[0026] <Details of the embodiment of the present disclosure> DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. At least some of the following preferred embodiments may be combined in any desired manner.

[0027] [1. Examples of infrastructure sensor usage] 1 is a diagram showing an example of use of an infrastructure sensor according to an embodiment. The infrastructure sensor 100 according to the embodiment is a radio wave radar for traffic monitoring, and detects pedestrians at a crosswalk 30. The infrastructure sensor 100 is, for example, a millimeter wave radar.

[0028] The infrastructure sensor 100 is attached to a structure 50 provided on a road. The structure 50 is several meters tall, and the infrastructure sensor 100 is installed several meters above the ground. The structure 50 includes, for example, a pole 51 and an arm 52 provided near the top end of the pole 51, and the infrastructure sensor 100 is attached to the arm 52.

[0029] The infrastructure sensor 100 detects objects (e.g., pedestrians and bicycles; hereinafter, pedestrians and bicycles will be referred to as "passengers") on the crosswalk 30 by emitting radio waves (millimeter waves) onto the crosswalk 30 and receiving the reflected waves. More specifically, the infrastructure sensor 100 can detect the distance from the infrastructure sensor 100 to an object on the crosswalk 30, the speed of the object, and the horizontal angle (azimuth angle) of the object's location relative to the radio wave emission axis.

[0030] In the infrastructure sensor 100, a detection area 40, which is a range on a road for detecting an object, is set. In the example shown in Fig. 1, the detection area 40 is set to include the entire crosswalk 30 in order to monitor the traffic conditions in the entire crosswalk 30.

[0031] [2. Management System] 2 is a diagram showing an example of the configuration of a management system according to an embodiment. The management system 10 includes an infrastructure sensor 100, a terminal 200, and a management device 300. The terminal 200 is capable of wireless communication with the infrastructure sensor 100. A worker (user) who performs maintenance or adjustment of the infrastructure sensor 100 can use the terminal 200 to configure the infrastructure sensor 100.

[0032] The infrastructure sensor 100 is connected to a network 400. The management device 300 is located, for example, in a central control center that maintains and manages roads and road facilities, and is connected to the network 400. The infrastructure sensor 100 can communicate with the management device 300 via the network 400.

[0033] [3. Infrastructure Sensor Configuration] 3 is a block diagram showing an example of a hardware configuration of an infrastructure sensor according to an embodiment. The infrastructure sensor 100 includes a processor 101, a nonvolatile memory 102, a volatile memory 103, a transmitting circuit 104, a receiving circuit 105, a first communication interface (I / F) 106, and a second communication I / F 107.

[0034] The volatile memory 103 is, for example, a semiconductor memory such as an SRAM (Static Random Access Memory) or a DRAM (Dynamic Random Access Memory). The non-volatile memory 102 is, for example, a flash memory, a hard disk, a ROM (Read Only Memory), etc. The non-volatile memory 102 stores a detection program 108, which is a computer program, and data used to execute the detection program 108, as well as a control program 109, which is a computer program, and data used to execute the control program 109. The non-volatile memory 102 also stores setting information 110 for the infrastructure sensor 100. The setting information 110 includes, for example, parameters that define the detection area 40. The non-volatile memory 102 is an example of a "storage unit."

[0035] The processor 101 is, for example, a CPU (Central Processing Unit). However, the processor 101 is not limited to a CPU. The processor 101 may also be a GPU (Graphics Processing Unit). The processor 101 may also be, for example, an ASIC (Application Specific Integrated Circuit) or a programmable logic device such as a gate array or FPGA (Field Programmable Gate Array). In this case, the ASIC or programmable logic device is configured to be able to execute processes similar to those of the detection program 108 and the control program 109.

[0036] The transmission circuit 104 includes a transmission antenna 104a. The number of transmission antennas 104a is not limited to one, and may be multiple. The transmission circuit 104 generates a modulated wave and transmits the generated modulated wave from the transmission antenna 104a. The transmitted modulated wave hits an object (e.g., a pedestrian or a vehicle) and is reflected.

[0037] The receiving circuit 105 includes a receiving antenna 105a. The number of receiving antennas 105a is not limited to one, and may be multiple. The receiving circuit 105 performs signal processing on the received reflected wave. More specifically, the receiving circuit 105 combines the modulated wave signal output from the transmitting circuit 104 with the reflected wave signal generated by the receiving circuit 105 to generate an intermediate frequency signal (hereinafter referred to as an "IF signal"). The receiving circuit 105 performs a fast Fourier transform (FFT) on the IF signal to calculate the distance, speed, and azimuth angle. The receiving circuit 105 outputs reflected wave data indicating the distance and azimuth angle for each object. The reflected wave data generated by signal processing is provided to the processor 101.

[0038] The processor 101 functions as a detection unit 111 by the detection program 108. The detection unit 111 can analyze the data of the reflected waves received by the receiving circuit 105 and detect objects. The detection unit 111 analyzes the reflected wave data and detects the position (distance and azimuth) and speed of the object. The detection unit 111 excludes objects that are constantly present (e.g., buildings, trees, traffic signals, etc.) from the detected objects and selects pedestrians. In this way, the position, speed, and azimuth of the pedestrian are detected. The detection result is output to the outside of the infrastructure sensor 100 and is used for monitoring the traffic volume at the crosswalk 30, traffic control, automatic vehicle driving, etc.

[0039] The first communication I / F 106 is a wireless communication interface. The first communication I / F 106 is, for example, a wireless LAN (Local Area Network) interface conforming to IEEE 802.11. The first communication I / F 106 operates in an ad hoc mode or an infrastructure mode. The infrastructure sensor 100 can communicate with the terminal 200 via the first communication I / F 106.

[0040] The processor 101 functions as a control unit 112 by the control program 109. The control unit 112 can control the first communication I / F 106. The control unit 112 can disable or enable the wireless communication function of the first communication I / F 106. The first communication I / F 106 whose wireless communication function is disabled is inoperable. In other words, the first communication I / F 106 whose wireless communication function is disabled cannot perform wireless communication with an external device (e.g., terminal 200). The first communication I / F 106 whose wireless communication function is enabled is operable. In other words, the first communication I / F 106 whose wireless communication function is enabled can perform wireless communication with an external device.

[0041] The control unit 112 can execute schedule management processing, wireless communication function activation processing, and setting information access processing, which will be described later.

[0042] The second communication I / F 107 is a wired communication interface or a wireless communication interface. For example, the second communication I / F 107 is an Ethernet interface ("Ethernet" is a registered trademark). The second communication I / F 107 is connected to the network 400. The second communication I / F 107 can communicate with the management device 300.

[0043] [4. Device Configuration] 4 is a block diagram showing an example of the hardware configuration of a terminal according to an embodiment. The terminal 200 is a portable information terminal. The terminal 200 is, for example, a tablet. The terminal 200 is not limited to a tablet, and may be a laptop computer or a smartphone. The terminal 200 includes a processor 201, a non-volatile memory 202, a volatile memory 203, a display device 204, an input device 205, and a wireless communication I / F 206.

[0044] The volatile memory 203 is, for example, a semiconductor memory such as an SRAM or a DRAM. The nonvolatile memory 202 is, for example, a flash memory, a hard disk, a ROM, etc. The nonvolatile memory 202 stores a sensor setting application (APP) 207, which is a computer program, and data used to execute the sensor setting APP 207.

[0045] The processor 201 is, for example, a CPU. However, the processor 201 is not limited to a CPU. The processor 201 may be a GPU. The processor 201 may be, for example, an ASIC or a programmable logic device such as a gate array or FPGA. In this case, the ASIC or programmable logic device is configured to be able to execute the same processing as the sensor setting APP 207.

[0046] The display device 204 includes, for example, a liquid crystal panel or an OEL (organic electroluminescence) panel. The display device 204 is an example of a "display unit." The display device 204 can display text or graphic information. The input device 205 includes, for example, a capacitive or pressure-sensitive touch pad overlaid on the display device 204. The input device 205 may also be a keyboard and a pointing device such as a mouse.

[0047] The wireless communication I / F 206 is, for example, a wireless LAN (Local Area Network) interface conforming to IEEE 802.11. The wireless communication I / F 206 operates in an ad hoc mode or an infrastructure mode. The terminal 200 can communicate with the infrastructure sensor 100 via the wireless communication I / F 206.

[0048] The sensor setting APP 207 is a program dedicated to setting the infrastructure sensor 100. The setting information 110 of the infrastructure sensor 100 can only be viewed and edited by using the sensor setting APP 207. The processor 201 can execute a sensor setting process and an extension request procedure display process, which will be described later, by using the sensor setting APP 207.

[0049] [5. Management device] The management device 300 is configured by a computer. The management device 300 stores schedule information for maintenance or adjustment work of the infrastructure sensor 100. The schedule information defines a work permission period during which maintenance or adjustment of the infrastructure sensor 100 is permitted. The work permission period is set for each infrastructure sensor 100 and is defined by a date and a time period.

[0050] [6. Operation of the management system] The operation of the management system according to the embodiment will be described below.

[0051] The management device 300 transmits the schedule information to the infrastructure sensor 100. The infrastructure sensor 100 receives the schedule information from the management device 300 and stores the received schedule information in the nonvolatile memory .

[0052] FIG. 5 is a flowchart illustrating an example of a schedule management process of the infrastructure sensor according to the embodiment.

[0053] The processor 101 reads out the schedule information from the nonvolatile memory 102 (step S101). The schedule information includes information on the work permission period of the infrastructure sensor 100.

[0054] Processor 101 determines whether the work permitted period has started (step S102). That is, processor 101 determines whether the start time of the work permitted period has arrived. If the work permitted period has not started (NO in step S102), processor 101 returns to step S102.

[0055] If the work permission period has started (YES in step S102), the processor 101 executes a wireless communication function activation determination process (step S103).

[0056] FIG. 6 is a flowchart illustrating an example of a process for determining whether to enable a wireless communication function of an infrastructure sensor according to the embodiment.

[0057] The first communication I / F 106 of the infrastructure sensor 100 is disabled outside the work permission period. Furthermore, even during the work permission period, the first communication I / F 106 is disabled until the wireless communication function enablement determination process is started. The condition for enabling the first communication I / F 106 is that an object (user) is detected by the infrastructure sensor 100 in a first access permission area, which is a specific partial area within the detection area 40, for a first authentication period (e.g., 30 seconds). The processor 101 determines whether an object has been detected in the first access permission area for the first authentication period (step S201) based on the detection result by the infrastructure sensor 100.

[0058] 7 is a diagram showing an example of the detection area of ​​the infrastructure sensor according to the embodiment. In the example of FIG. 7, the first access permission area 61 is set directly below the infrastructure sensor 100. The user is notified in advance of the location of the first access permission area 61 and the first authentication period. When the user performs maintenance or adjustment work on the infrastructure sensor 100, the user moves to the first access permission area 61 with the terminal 200 and remains in the first access permission area 61 for the first authentication period.

[0059] Returning to FIG. 6, if an object has not been detected continuously in the first access permission area 61 for the first authentication period (NO in step S201), the processor 101 returns to step S201.

[0060] If an object is detected continuously in the first access permission area 61 for the first authentication period (YES in step S201), the processor 101 enables the first communication I / F 106 (step S202).

[0061] In this embodiment, the first communication I / F 106 is not enabled indefinitely. The first communication I / F 106 is enabled only during a valid period, and is disabled when the valid period ends. The valid period is, for example, one hour.

[0062] The validity period is an extendable period. The validity period is extended when an extension request is received from the user. An extension request from the user can only be received during a specific period at the end of the validity period. This period is called the "extension request acceptance period." For example, the extension request acceptance period is the last five minutes of the validity period.

[0063] The processor 101 sets the valid period counting from the current time, and sets the extension request acceptance period at the end of the valid period (step S203).

[0064] Furthermore, the processor 101 starts a setting information access process (step S204). Fig. 8 is a flowchart showing an example of a setting information access process of the infrastructure sensor according to the embodiment, and Fig. 9 is a flowchart showing an example of a sensor setting process of the terminal according to the embodiment.

[0065] When the wireless communication function of the infrastructure sensor 100 is enabled, the user operates the terminal 200 to attempt to establish a wireless communication connection with the infrastructure sensor 100. In a specific example, the user inputs an SSID and a security key into the terminal 200. The terminal 200 transmits the input SSID and security key to the infrastructure sensor 100.

[0066] In response to a request from the terminal 200, the processor 101 of the infrastructure sensor 100 permits a wireless communication connection with the terminal 200. Specifically, the processor 101 performs authentication using the SSID and security key received from the terminal 200, and permits a wireless communication connection with the terminal 200 if the authentication is successful. As a result, a wireless communication connection is established between the infrastructure sensor 100 and the terminal 200 (steps S301 and S401).

[0067] The processor 101 sets the operation mode of the infrastructure sensor 100 to the setting restriction mode (step S302). The setting restriction mode is an operation mode that permits transmission of the setting information 110 stored in the nonvolatile memory 102 to the terminal 200, but restricts change (editing) of the setting information 110. The processor 101 of the infrastructure sensor 100 reads the setting information 110 from the nonvolatile memory 102 and transmits the read setting information 110 to the terminal 200. The terminal 200 receives the setting information 110, and the processor 201 causes the display device 204 to display the setting information 110. When the infrastructure sensor 100 is set to the setting restriction mode, the user can view the setting information 110 using the terminal 200, but cannot change the setting information 110 (step S402).

[0068] When editing the setting information 110, the user inputs a request to change the setting information 110 to the terminal 200. The request can be input by the user performing a predetermined operation on the terminal 200. The processor 201 determines whether or not a request to change the setting information 110 from the user has been accepted (step S403).

[0069] If there is no need to change the setting information 110, the user does not input a request to change the setting information 110 to the terminal 200. If a request to change the setting information 110 from the user has not been received (NO in step S403), the processor 201 proceeds to step S410.

[0070] When it is necessary to change the setting information 110, the user inputs a change request for the setting information 110 to the terminal 200. When a change request for the setting information 110 from the user is accepted (YES in step S403), the processor 201 transmits the change request for the setting information 110 to the infrastructure sensor 100 (step S404).

[0071] The processor 101 of the infrastructure sensor 100 determines whether or not a request to change the setting information 110 has been received from the terminal 200 (step S303). If a request to change the setting information 110 has not been received (NO in step S303), the processor 101 proceeds to step S308.

[0072] In this embodiment, a specific condition must be satisfied in order to lift the restriction on changing the setting information 110 in the infrastructure sensor 100. Specifically, the condition for lifting the restriction on changing the setting information 110 is that an object (user) is detected by the infrastructure sensor 100 continuously for a second authentication period (e.g., 30 seconds) in a second access permission area, which is a specific partial area within the detection area 40. Determining whether an object has been detected continuously for the second authentication period in the second access permission area is an authentication process that authenticates the user using the object detection function of the infrastructure sensor 100, and if the user authentication is successful, the restriction on changing the setting information 110 is lifted.

[0073] The second access permission area 62 is an area set as part of the detection area 40, and is different from the first access permission area 61. In the example of Fig. 7, the second access permission area 62 is provided in the center of the crosswalk 30. More specifically, the second access permission area 62 is provided on an extension of the central reservation 70, at a position in the center of the crosswalk 30 in the width direction.

[0074] 8 and 9, the processor 101 of the infrastructure sensor 100 transmits a request to display the procedure for removing the restriction on changing the setting information to the terminal 200 (step S404). When the terminal 200 receives the request to display the procedure for removing the restriction on changing the setting information (step S405), the processor 201 causes the display device 204 to display a screen for the procedure for removing the restriction on changing the setting information (step S406).

[0075] FIG. 10 is a diagram showing an example of a restriction removal procedure screen. The restriction removal procedure screen 500 includes information on the procedure required to remove the restriction on changing the setting information 110. In the example of FIG. 10, a diagram showing the position of the second access permission area 62 on the crosswalk 30 is displayed on the left side of the screen 500, and the message "Please move to the location shown in the figure and stay there for 30 seconds" is displayed on the right side of the screen 500. The restriction removal procedure screen 500 allows the user to know the procedure required to remove the restriction on changing the setting information 110.

[0076] When editing the setting information 110, the user moves to the second access permission area 62 in accordance with the procedure shown on the restriction removal procedure screen 500, and remains in the second access permission area 62 for the second authentication period. On the other hand, when there is no need to edit the setting information 110, the user does not follow the procedure shown on the restriction removal procedure screen 500. Returning to Figures 8 and 9, the processor 101 of the infrastructure sensor 100 determines whether an object has been detected in the second access permission area 62 for the second authentication period in the detection result by the infrastructure sensor 100 (step S305).

[0077] If an object has not been detected continuously in the second access permission area 62 for the second authentication period (NO in step S305), the processor 101 proceeds to step S308.

[0078] If an object is detected in the second access permission area 62 continuously for the second authentication period (YES in step S305), the processor 101 sets the operation mode of the infrastructure sensor 100 to the setting permission mode (step S306). The setting permission mode is an operation mode that permits the terminal 200 to change the setting information 110 stored in the non-volatile memory 102. The processor 101 transmits a request to the terminal 200 to display that the restriction on changing the setting information has been successfully lifted (step S307).

[0079] Processor 201 of terminal 200 determines whether a request to display the success of lifting the restriction on changing the setting information has been received (step S407). If a request to display the success of lifting the restriction on changing the setting information has not been received (NO in step S407), processor 201 proceeds to step S410. If a request to display the success of lifting the restriction on changing the setting information has been received (YES in step S407), processor 201 causes display device 204 to display a success screen for lifting the restriction (step S408).

[0080] 11 is a diagram showing an example of a restriction release success screen. The restriction release success screen 510 includes information indicating that the restriction on changing the setting information 110 has been successfully released. In the example of FIG. 11, the screen 510 displays the message "The restriction on changing the setting information has been released. You can now edit the setting information." The restriction release success screen 510 allows the user to know that the restriction on changing the setting information 110 has been released.

[0081] 8 and 9, when the infrastructure sensor 100 is set to the setting permission mode, the user can change the setting information 110 using the terminal 200 (step S409). The setting information 110 changed by the user is transmitted from the terminal 200 to the infrastructure sensor 100. The processor 101 of the infrastructure sensor 100 overwrites the setting information 110 in the non-volatile memory 102 with the received changed setting information 110.

[0082] When the user has completed viewing or editing the setting information 110 of the infrastructure sensor 100 and is about to finish the maintenance or adjustment work of the infrastructure sensor 100, the user inputs a request to end processing into the terminal 200. The request can be input by the user performing a predetermined operation on the terminal 200. The processor 201 determines whether or not a request to end processing has been received from the user (step S410). If a request to end processing has not been received (NO in step S410), the processor 201 returns to step S410.

[0083] When the processor 201 receives a request to end processing from the user (YES in step S410), the processor 201 transmits a request to disconnect wireless communication to the infrastructure sensor 100 (step S411).

[0084] The processor 101 of the infrastructure sensor 100 determines whether or not a request to disconnect wireless communication has been received from the terminal 200 (step S308). If a disconnection request has not been received (NO in step S308), the processor 101 returns to step S308. If the infrastructure sensor 100 has received a request to disconnect wireless communication from the terminal 200 (YES in step S308), the processor 101 disconnects wireless communication with the terminal 200. This disconnects wireless communication between the infrastructure sensor 100 and the terminal 200 (steps S309, S412). This completes the setting information access process of the infrastructure sensor 100 and the sensor setting process of the terminal 200.

[0085] The viewing and editing of the setting information 110 by the terminal 200 is performed via wireless communication. Therefore, the infrastructure sensor 100 can execute the above-described setting information access process only while the first communication I / F 106 is enabled. When the validity period of the wireless communication function of the first communication I / F 106 expires, the first communication I / F 106 is disabled. If the first communication I / F 106 is disabled even while the viewing and editing of the setting information 110 by the terminal 200 is in progress, the setting information access process is forcibly terminated.

[0086] If the viewing or editing of the setting information 110 is not completed within the validity period, the user can request an extension of the validity period from the infrastructure sensor 100. Returning to FIG. 6, the processor 101 determines whether the extension request acceptance period has started, that is, whether the start time of the extension request acceptance period has arrived (step S205). If the extension request acceptance period has not started (NO in step S205), the processor 101 returns to step S205.

[0087] If the extension request acceptance period has started (YES in step S205), the processor 101 transmits a request to display the procedure for requesting extension of the validity period to the terminal 200 (step 206).

[0088] In this embodiment, a specific condition must be satisfied in order to extend the valid period of the wireless communication function of the infrastructure sensor 100. Specifically, the condition for extending the valid period of the wireless communication function of the infrastructure sensor 100 is that an object (user) is detected by the infrastructure sensor 100 continuously for a third authentication period (e.g., 30 seconds) in an extension request area, which is a specific partial area within the detection area 40. Determining whether an object has been detected continuously for the third authentication period in the extension request area is an authentication process that authenticates the user using the object detection function of the infrastructure sensor 100, and if the user authentication is successful, the valid period of the wireless communication function of the infrastructure sensor 100 is extended.

[0089] In the example of FIG. 7, the extension request area 63 is provided at the boundary between the crosswalk 30 and the sidewalk, in the center of the crosswalk 30 in the width direction.

[0090] The processor 201 of the terminal 200 executes an extension request procedure display process in parallel with the above-described sensor setting process. Fig. 12 is a flowchart showing an example of the extension request procedure display process of the terminal according to the embodiment.

[0091] The processor 201 determines whether or not a request to display the extension request procedure transmitted from the infrastructure sensor 100 has been received (step S501). If the terminal 200 has not received a request to display the extension request procedure (NO in step S501), the processor 201 returns to step S501.

[0092] When terminal 200 receives a request to display the extension request procedure (YES in step S501), processor 201 causes display device 204 to display an extension request procedure screen (step S502).

[0093] FIG. 13 is a diagram showing an example of an extension request procedure screen. The extension request procedure screen 520 includes information on the procedure required to extend the validity period of the wireless communication function of the infrastructure sensor 100. In the example of FIG. 13, a diagram showing the position of the extension request area 63 on the crosswalk 30 is displayed on the left side of the screen 520, and the text "Please move to the location shown in the figure and stay there for 30 seconds" is displayed on the right side of the screen 520. The extension request procedure screen 520 allows the user to know the procedure required to extend the validity period of the wireless communication function of the infrastructure sensor 100.

[0094] When the user extends the validity period of the wireless communication function of the infrastructure sensor 100, the user moves to the extension request area 63 in accordance with the procedure shown on the extension request procedure screen 520 and remains in the extension request area 63 for the third authentication period. On the other hand, when there is no need to extend the validity period, the user does not follow the procedure shown on the extension request procedure screen 520. Returning to FIG. 6 , the processor 101 of the infrastructure sensor 100 determines whether an object has been detected in the extension request area 63 for the third authentication period in the detection results by the infrastructure sensor 100 (step S207).

[0095] If an object is detected in the extension request area 63 continuously for the third authentication period (YES in step S207), the processor 101 extends the valid period by the extension period (step S209).

[0096] Furthermore, the processor 101 transmits a request to the terminal 200 to display the success of the extension of the valid period of the wireless communication function of the infrastructure sensor 100 (step S307), and proceeds to step S205.

[0097] 12, the processor 201 of the terminal 200 determines whether or not a request to display the success of the extension of the validity period of the wireless communication function of the infrastructure sensor 100 has been received (step S503). If a request to display the success of the extension of the validity period has not been received (NO in step S503), the processor 201 ends the extension request procedure display process. If a request to display the success of the extension of the validity period has been received (YES in step S503), the processor 201 causes the display device 204 to display a validity period extension success screen (step S504), and ends the extension request procedure display process.

[0098] FIG. 14 is a diagram showing an example of a validity period extension success screen. The validity period extension success screen 530 includes information indicating that the validity period of the wireless communication function of the infrastructure sensor 100 has been successfully extended. In the example of FIG. 14, the screen 530 displays the following message: "The validity period of wireless communication has been extended by 10 minutes. Wireless communication is valid until 11:40." The validity period extension success screen 530 allows the user to know that the validity period of the wireless communication function of the infrastructure sensor 100 has been extended.

[0099] 6, if an object has not been detected in extension request area 63 continuously for the third authentication period (NO in step S207), processor 101 determines whether the valid period has expired (step S210). If the valid period has not expired, processor 101 returns to step S207.

[0100] If the valid period has expired (YES in step S210), the processor 101 disables the first communication I / F 106 (step S211). When the wireless communication function of the infrastructure sensor 100 is disabled, the processor 101 ends the setting information access process (step S212) and returns to step S201.

[0101] The wireless communication function activation determination process described above is executed only during the work permission period, and therefore, when the work permission period ends, the wireless communication function activation determination process is forcibly terminated.

[0102] Returning to FIG. 5, processor 101 determines whether the work permission period has ended (step S104). If the work permission period has not ended (NO in step S104), processor 101 returns to step S104. If the work permission period has ended (YES in step S104), processor 101 ends the wireless communication function activation determination process. This ends the schedule management process.

[0103] [7. Variations] In the above-described embodiment, the restriction on changing the setting information 110 is lifted (the operation mode is changed from the setting restricted mode to the setting permitted mode) when the infrastructure sensor 100 detects an object in the second access permission area 62 continuously for the second authentication period, that is, when the authentication process using the object detection function of the infrastructure sensor 100 is successful, but this is not limiting. In addition to the authentication process using the object detection function of the infrastructure sensor 100, for example, the restriction on changing the setting information 110 may be lifted when the terminal 200 transmits a username and password input by a user to the infrastructure sensor 100 and the processor 101 of the infrastructure sensor 100 succeeds in the authentication process using the username and password, that is, when the authentication process using wireless communication between the infrastructure sensor 100 and the terminal 200 is successful.

[0104] In the above-described embodiment, the validity period of the wireless communication function of the infrastructure sensor 100 is extended when the infrastructure sensor 100 detects an object in the extension request area 63 continuously for the third authentication period, i.e., when the authentication process using the object detection function of the infrastructure sensor 100 is successful, but this is not limiting. In addition to the authentication process using the object detection function of the infrastructure sensor 100, for example, the validity period of the wireless communication function of the infrastructure sensor 100 may be extended when the terminal 200 transmits a username and password input by a user to the infrastructure sensor 100 and the processor 101 of the infrastructure sensor 100 succeeds in the authentication process using the username and password, i.e., when the authentication process using wireless communication between the infrastructure sensor 100 and the terminal 200 is successful.

[0105] In the above-described embodiment, the infrastructure sensor 100 is a millimeter-wave radar, but is not limited to this. The infrastructure sensor 100 may be a LiDAR (Light Detection and Ranging) that detects the position of an object by irradiating a laser onto the detection area 40, or a camera that captures an image of the detection area 40 and analyzes the image to detect the position of an object.

[0106] [8. Effects of the embodiment] An infrastructure sensor 100 according to the embodiment is attached to a structure 50 installed on a road and detects objects on the road. The infrastructure sensor 100 includes a detection unit 111, a first communication I / F 106, and a control unit 112. The detection unit 111 detects objects within a detection area 40 set on the road. The first communication I / F 106 is capable of wireless communication with a terminal 200. The control unit 112 controls the wireless communication function of the first communication I / F 106. When the detection unit 111 detects an object in a first access permission area 61 while the wireless communication function of the first communication I / F 106 is disabled, the control unit 112 enables the wireless communication function of the first communication I / F 106. The first access permission area 61 is an area set as part of the detection area 40 to permit access by the terminal 200. This eliminates the need for users to climb to high places for maintenance or adjustment of the infrastructure sensor 100, thereby reducing the need to enforce traffic restrictions. Furthermore, unless the user is located in the first access permission area 61, the wireless communication function via the first communication I / F 106 is not enabled, thereby preventing unauthorized access to the infrastructure sensor 100. Therefore, the workload for maintaining or adjusting the infrastructure sensor 100 can be reduced while ensuring security.

[0107] When the detection unit 111 detects an object continuously for a preset period in the first access permission area 61 while the wireless communication function of the first communication I / F 106 is disabled, the control unit 112 may enable the wireless communication function of the first communication I / F 106. As a result, even if a non-worker attempting unauthorized access accidentally enters the first access permission area 61, the wireless communication function will not be enabled unless the non-worker remains in the first access permission area continuously, thereby preventing unauthorized access.

[0108] The infrastructure sensor 100 includes a nonvolatile memory 102. The nonvolatile memory 102 may store setting information 110 of the infrastructure sensor 100. The control unit 112 may operate in a setting restriction mode when the wireless communication function via the first communication I / F 106 is enabled. The restricted setting mode is an operation mode of the infrastructure sensor 100 in which transmission of the setting information 110 stored in the nonvolatile memory 102 to the terminal 200 is permitted, but changes to the setting information 110 are restricted. This restricts changes to the setting information 110 even if wireless communication with the infrastructure sensor 100 is simply enabled, thereby making it possible to prevent unauthorized or unnecessary setting changes to the infrastructure sensor 100.

[0109] When the wireless communication function via the first communication I / F 106 is enabled, the control unit 112 may execute authentication processing to authenticate the user of the terminal 200. When the user authentication is successful, the control unit 112 may operate in a setting permission mode. The setting permission mode is an operation mode that permits changes to the setting information 110 stored in the non-volatile memory 102. This makes it possible to change the setting information 110 only when the user authentication is successful, thereby preventing unauthorized or unnecessary setting changes to the infrastructure sensor 100.

[0110] The authentication process may include a process in which the control unit 112 determines whether or not the detection unit 111 has detected an object in a second access permission area 62 that is set as part of the detection area 40 and is different from the first access permission area 61. This makes it possible to authenticate the user by utilizing the object detection function of the infrastructure sensor 100.

[0111] When a request to transition from the setting restriction mode to the setting permission mode is received from the terminal 200, the control unit 112 may cause the first communication I / F 106 to transmit a display request requesting the terminal 200 to display the restriction removal procedure screen 500. The restriction removal procedure screen 500 is a screen that prompts the user to move to the second access permission area 62. This makes it possible to present to the user the procedure required to transition from the setting restriction mode to the setting permission mode.

[0112] The setting information 110 may include parameters that define the detection area 40. This allows the user to set the detection area 40, which is an important setting item for the infrastructure sensor 100, while ensuring security.

[0113] The control unit 112 may disable the wireless communication function of the first communication I / F 106 after a predetermined valid period has elapsed since enabling the wireless communication function of the first communication I / F 106. This makes it possible to prevent the state in which wireless communication with the infrastructure sensor 100 is possible from being maintained for a long period of time.

[0114] The control unit 112 may extend the validity period when a request for extension of the validity period is received during an extension request reception period before the validity period has elapsed since the wireless communication function was enabled by the first communication I / F 106. This makes it possible to prevent interruptions to work due to disconnection of wireless communication when maintenance or adjustment work on the infrastructure sensor 100 takes time.

[0115] The request to extend the validity period may include the user being located in an extension request area 63 that is set as part of the detection area 40. The control unit 112 may determine that the extension request has been accepted when the detection unit 111 detects an object in the extension request area 63 during the extension request acceptance period. This makes it possible to request an extension of the validity period of wireless communication by utilizing the object detection function of the infrastructure sensor 100.

[0116] When the extension request acceptance period starts, the control unit 112 may cause the first communication I / F 106 to transmit a second display request requesting the terminal 200 to display the extension request procedure screen 520. The extension request procedure screen 520 is a screen that prompts the user to move to the extension request area 63. This makes it possible to present to the user the procedure required to extend the valid period of wireless communication.

[0117] The infrastructure sensor 100 may further include a second communication I / F 107 capable of communicating with the management device 300. The second communication I / F 107 may receive schedule information in which a work permission period is defined from the management device 300. When the detection unit 111 detects an object in the first access permission area 61 during the work permission period, the control unit 112 may enable the wireless communication function of the first communication I / F 106 that was previously disabled. This enables the wireless communication function of the infrastructure sensor 100 only during the work permission period in the schedule information provided by the management device 300, thereby further improving security.

[0118] The management system 10 according to the embodiment includes an infrastructure sensor 100 and a terminal 200. The infrastructure sensor 100 includes a detection unit 111, a first communication I / F 106, and a control unit 112. The detection unit 111 detects an object within a detection area 40 set on a road. The first communication I / F 106 is capable of wireless communication with the terminal 200. The control unit 112 controls the wireless communication function of the first communication I / F 106. When the detection unit 111 detects an object in a first access permission area 61 while the wireless communication function of the first communication I / F 106 is disabled, the control unit 112 enables the wireless communication function of the first communication I / F 106. The first access permission area 61 is an area set as part of the detection area 40 to permit access by the terminal 200. This eliminates the need for users to climb to a high place for maintenance or adjustment of the infrastructure sensor 100, thereby reducing the need for traffic restrictions. Furthermore, unless the user is located in the first access permission area 61, the wireless communication function via the first communication I / F 106 is not enabled, thereby preventing unauthorized access to the infrastructure sensor 100. Therefore, the workload for maintaining or adjusting the infrastructure sensor 100 can be reduced while ensuring security.

[0119] The infrastructure sensor 100 may include a nonvolatile memory 102 that stores setting information for the infrastructure sensor 100. The control unit 112 may operate in a setting restriction mode when the wireless communication function via the first communication I / F 106 is enabled. The control unit 112 may execute an authentication process to authenticate a user of the terminal 200 in the setting restriction mode. If the user authentication is successful, the control unit 112 may transition to a setting permission mode. The authentication process may include a process in which the control unit 112 determines whether the detection unit 111 has detected an object in a second access permission area 62 that is set as part of the detection area 40 and is different from the first access permission area 61. The terminal 200 may include a display device 204. When the control unit 112 operates in the setting restriction mode and the terminal 200 receives a request from the user to change the setting information 110, the display device 204 may display a restriction release procedure screen 500. This allows the user to be presented with the procedure required to transition from the setting restriction mode to the setting permission mode.

[0120] The control unit 112 may disable the wireless communication function of the first communication I / F 106 when a preset validity period has elapsed since the wireless communication function of the first communication I / F 106 was enabled. The control unit 112 may extend the validity period by a predetermined extension period when a request for extension of the validity period is received during an extension request acceptance period before the validity period has elapsed since the wireless communication function of the first communication I / F 106 was enabled. The request for extension of the validity period may include the user being located in an extension request area 63 set as part of the detection area 40. The terminal 200 may include a display device 204. During the extension request acceptance period, the display device 204 may display an extension request procedure screen 520. This makes it possible to present the user with the procedure required to extend the validity period of wireless communication before the validity period of wireless communication expires.

[0121] [9. Supplementary Notes] The embodiments disclosed herein are illustrative in all respects and are not restrictive. The scope of the present invention is defined by the claims rather than the above-described embodiments, and includes meanings equivalent to the claims and all modifications within the scope thereof. [Explanation of symbols]

[0122] 10 Management System 30 Crosswalk 40 detection area 50 Structures 51 Paul 52 Arm 61 First Access Permission Area 62 Second Access Permission Area 63 Extension Request Area 70 Median Strip 100 Infrastructure Sensors 101 processors 102 Non-volatile memory 103 Volatile Memory 104 Transmitting circuit 104a Transmitting antenna 105 Receiving circuit 105a Receiving antenna 106 First communication interface (first communication I / F) (wireless communication unit) 107 Second communication interface (Second communication I / F) 108 Detection Program 109 Control Program 110 Setting Information 111 Detection unit 112 Control Unit 200 devices 201 processor 202 Non-volatile memory 203 Volatile Memory 204 Display device 205 Input Device 206 Wireless communication interface (wireless communication I / F) 207 Sensor Setting Application (Sensor Setting APP) 300 Management device 400 Network 500 Restriction removal procedure screen 510 Restriction removal success screen 520 Extension Request Procedure Screen 530 Validity period extension success screen

Claims

1. An infrastructure sensor attached to a structure installed on a road and detecting an object on the road, a detection unit that detects an object within a detection area set on the road; a wireless communication unit capable of wireless communication with a terminal; a control unit that controls a wireless communication function of the wireless communication unit; a storage unit that stores setting information of the infrastructure sensor; Equipped with When the wireless communication function is disabled and the detection unit detects an object in a first access permission area that is set as a part of the detection area to permit access by the terminal, the control unit enables the wireless communication function, the control unit operates in a setting restriction mode in which, when the wireless communication function is enabled, transmission of the setting information stored in the storage unit to the terminal is permitted and change of the setting information is restricted. Infrastructure sensors.

2. When the detection unit detects the object continuously for a predetermined period in the first access permission area in a state in which the wireless communication function is disabled, the control unit enables the wireless communication function. The infrastructure sensor according to claim 1 .

3. the control unit, when enabling the wireless communication function, executes an authentication process to authenticate a user of the terminal, and when the authentication of the user is successful, operates in a setting permission mode to permit changes to the setting information stored in the storage unit. The infrastructure sensor according to claim 1 .

4. the authentication process includes a process in which the control unit determines whether the detection unit has detected an object in a second access permission area that is set as a part of the detection area and is different from the first access permission area. The infrastructure sensor according to claim 3 .

5. the control unit, when a transition from the setting restriction mode to the setting permission mode is requested by the terminal, causes the wireless communication unit to transmit a display request requesting the terminal to display a screen prompting a user to move to the second access permission area. The infrastructure sensor according to claim 4 .

6. The setting information includes parameters that define the detection area. The infrastructure sensor according to any one of claims 1 to 5.

7. the control unit disables the wireless communication function after a preset valid period has elapsed since the wireless communication function was enabled. The infrastructure sensor according to any one of claims 1 to 6.

8. the control unit extends the validity period when a request for extension of the validity period is received during an extension request reception period before the validity period has elapsed since the wireless communication function was enabled. The infrastructure sensor according to claim 7 .

9. the request for extension of the validity period includes the user being located in an extension request area set as a part of the detection area; the control unit determines that the extension request has been accepted when the detection unit detects an object in the extension request area during the extension request acceptance period. The infrastructure sensor according to claim 8 .

10. the control unit, when the extension request acceptance period starts, causes the wireless communication unit to transmit a second display request requesting the terminal to display a screen prompting the user to move to the extension request area. The infrastructure sensor according to claim 9 .

11. the infrastructure sensor further includes a second communication unit capable of communicating with a management device; the second communication unit receives schedule information in which a work permission period is defined from the management device, When the detection unit detects an object in the first access permission area within the work permission period, the control unit enables the wireless communication function that has been disabled. The infrastructure sensor according to any one of claims 1 to 10.

12. An infrastructure sensor attached to a structure installed on a road and detecting an object on the road, a detection unit that detects an object within a detection area set on the road; a wireless communication unit capable of wireless communication with a terminal; a control unit that controls a wireless communication function of the wireless communication unit; Equipped with When the wireless communication function is disabled and the detection unit detects an object in a first access permission area that is set as a part of the detection area to permit access by the terminal, the control unit enables the wireless communication function, the control unit disables the wireless communication function after a preset valid period has elapsed since the wireless communication function was enabled, the control unit extends the validity period when a request for extension of the validity period is received during an extension request reception period before the validity period has elapsed since the wireless communication function was enabled, and the request for extension of the validity period includes the user being located in an extension request area set as a part of the detection area; the control unit determines that the extension request has been accepted when the detection unit detects an object in the extension request area during the extension request acceptance period. Infrastructure sensors.

13. an infrastructure sensor attached to a structure installed on a road and configured to detect an object on the road; a terminal capable of wireless communication with the infrastructure sensor; Equipped with The infrastructure sensor includes: a detection unit that detects an object within a detection area set on the road; a wireless communication unit capable of wireless communication with the terminal; a control unit that controls a wireless communication function of the wireless communication unit; a storage unit that stores setting information of the infrastructure sensor; Including, When the wireless communication function is disabled and the detection unit detects an object in a first access permission area that is set as a part of the detection area to permit access by the terminal, the control unit enables the wireless communication function, The control unit When the wireless communication function is enabled, the device operates in a setting restriction mode in which transmission of the setting information stored in the storage unit to the terminal is permitted and change of the setting information is restricted; In the setting restriction mode, an authentication process is executed to authenticate a user of the terminal, and if the authentication of the user is successful, the mode is shifted to a setting permission mode in which changes to the setting information stored in the storage unit are permitted; the authentication process includes a process in which the control unit determines whether the detection unit has detected an object in a second access permission area that is set as a part of the detection area and is different from the first access permission area, the terminal includes a display unit; when the control unit operates in the setting restriction mode and the terminal receives a request from a user to change the setting information, the display unit displays a screen prompting the user to move to the second access permission area. Management system.

14. the control unit disables the wireless communication function when a preset valid period has elapsed since the wireless communication function was enabled, the control unit extends the validity period when a request for extension of the validity period is received during an extension request reception period before the validity period has elapsed since the wireless communication function was enabled, and the request for extension of the validity period includes the user being located in an extension request area set as a part of the detection area; the terminal includes a display unit; During the extension request acceptance period, the display unit displays a screen prompting the user to move to the extension request area. The management system of claim 13.

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