Patent Application
20250116753
The present disclosure relates to a radar system including a plurality of radar devices for detecting an object by monitoring different areas.
Conventionally, a radar device for detecting an object existing in a monitoring area based on reception results of reflected waves with respect to transmitted waves have been practically used. The radar device is used, e.g., for detecting an object such as an obstacle or a falling object at work sites, grounds, inside facilities, parking lots, roads, railroad tracks, runways, and the like. Such a radar device may be, e.g., a frequency modulated continuous-wave (FMCW) radar device using microwave or millimeter wave bands.
Prior arts in the technical field related to the present disclosure includes the following. For example, Patent Document 1 discloses an invention that supports a monitoring operation of an operator in charge of monitoring a specific monitoring area. Patent Document 2 discloses an invention for protecting a receiving circuit of a radar device from input of an excessive reflected received power. Patent Document 3 discloses an invention that supports an operator in efficiently finding an object detected by a radar device.
For example, a radar system including a plurality of radar devices is constructed to monitor a wide area such as a runway. In accordance with the radar system, it is possible to measure a position of a detected object in a wide area with a certain degree of accuracy. When an object to be removed is detected by the radar system, an operator of a management company or the like removes the detected object. In order to quickly complete the operation, an operator searches for a detected object while driving a car and using a map of a monitoring area based on location information of the detected object obtained from the radar system. In this case, for example, the map is displayed on a portable terminal such as a tablet or the like, and a location where the detected object exists is highlighted.
However, in the case of performing a search operation using a portable terminal such as a tablet or the like, a long period of time is required to find an object to be searched in a wide area with no landmarks. Further, an operator needs to perform a search operation while looking at the display on a portable terminal, which was dangerous for the operator. The search operation may be performed after sunset when there is little sunlight as well as daytime. Under such dim conditions, it was even more difficult to search for a small object to be searched.
The present disclosure has been made in view of the conventional problems, and the object of the present disclosure is to provide a technique that facilitates searching of an objected detected in a wide area using a radar system including a plurality of radar devices.
In order to achieve the object, a radar system according to one aspect of the present disclosure is configured as follows. That is, the radar system according to the present disclosure comprises a plurality of radar devices that detect an object by monitoring different areas, wherein each of the plurality of radar devices includes a display device, and when the object is detected by any one of the plurality of radar devices, a display device of a first radar device that has detected the object produces a display indicating that the object has been detected, and a display device of a second radar device different from the first radar device produces a display indicating a position of the first radar device.
According to the radar system of the present disclosure, the display indicating the position of the first radar device includes a display indicating a direction of the first radar device with respect to the second radar device.
Further, according to the radar system of the present disclosure, the display indicating the position of the first radar device includes a display indicating a distance from the second radar device to the first radar device.
Further, according to the radar system of the present disclosure, the display indicating the position of the first radar device is a display indicating coordinates of the first radar device.
Further, according to the radar system of the present disclosure, the display indicating that the object has been detected is a display indicating coordinates at which the object was detected.
Further, according to the radar system of the present disclosure, the display indicating that the object has been detected is a display in which the position of the object is superimposed on a map indicating an area monitored by the first radar device.
A detection result display method according to another aspect of the present disclosure is configured as follows. That is, the detection result display method using a radar system including a plurality of radar devices that detect an object by monitoring different areas, wherein each of the plurality of radar devices includes a display device, and when the object is detected by any one of the plurality of radar devices, a display device of a first radar device that has detected the object produces a display indicating that the object has been detected, and a display device of a second radar device different from the first radar device produces a display indicating a position of the first radar device.
A radar device according to another aspect of the present disclosure is configured as follows. That is, the radar device for detecting an object that is used together with another radar device that monitors a different area, comprises a display device that produces a display indicating that an object has been detected when the object is detected by the radar device.
Further, the radar device according to another aspect of the present disclosure is configured as follows. That is, the radar device for detecting an object that is used together with another radar device that monitors a different area, comprises a display device that produces a display indicating the position of said another radar device that has detected the object when the object is detected by said another radar device.
In accordance with the present disclosure, it becomes easier to search for an object detected in a wide area using a radar system including a plurality of radar devices.
An embodiment of the present disclosure will be described with reference to the accompanying drawings.
In
Each of the plurality of radar devices 20 has a display device 30 having a function of displaying various information. In
The display device 30 displays the detection result of the object. For example, when the object 15 is detected by the radar device 20-2, the display device 30-2 of the radar device 20-2 produces a display indicating that the object 15 has been detected. In this case, the display devices 30-1, 30-3, and 30-4 of the other radar devices 20-1, 20-3, and 20-4 display the position of the radar device 20-2 that detected the object 15. In other words, the display device 30 of the other radar device 20 produces a display for guiding an operator toward the radar device 20 that has detected the object 15. Hereinafter, the structure thereof will be described.
In the radar device 20, the signal control part 21 generates a radar signal of a predetermined frequency, supplies it to the transmitting part 22, and causes the transmitting part 22 to output radar transmission waves toward a monitoring area. When the object 15 exists in the monitoring area, the radar transmission waves are reflected by the object 15. The reflected waves from the object 15 are received by the receiving part 23 of the radar device 20 and subjected to signal processing by the signal control part 21. As a result, the object 15 existing in the monitoring area is detected. Further, in order to specify the detection position of the object 15, the distance or the orientation from the radar device 20 to the object 15 is also measured. The operating principle or the usage frequency of the radar device 20 is not particularly limited.
When the object 15 existing in the monitoring area is detected, the radar device 20 transmits object detection information to its own display device 30, and also transmits the object detection information to the display devices 30 of other radar devices 20 through the radar control device 40. In other words, the object detection information is transmitted to all the display devices 30 in the system. The object detection information includes radar identification information (e.g., radar number) for identifying the radar device 20 that has detected the object 15 and object detection position information indicating the detection position of the object 15.
The display device 30 determines display contents based on the object detection information under the control of the display control part 31, and causes the display part 32 to display the detection result of the object. The display part 32 is configured using, e.g., a light emitting diode (LED) display. Here, it is assumed that the display device 30 stores in advance the radar identification information for identifying the radar device 20 having a pair relationship therewith in a memory. Hereinafter, the display on the display device 30-2 having a pair relationship with the radar device 20-2, and the display on the display device 30-1 that is an example of another display device in the case where the radar device 20-2 detects the object 15, for example, will be described.
When the radar identification information included in the object detection information is the same as the previously stored radar identification information, the display control part 31 of the display device 30-2 recognizes that the radar device of the transmission source of the object detection information has a pair relationship with its own device, and causes the display part 32 to produce a display indicating that the object 15 has been detected. In this case, the display control part 31 of the display device 30-2 may produce a display indicating the position of the object 15 in the monitoring area of the radar device 20-2 (for example, display shown in
The type of display displayed by the display device 30 of each radar device 20 can be determined based on the positional relationship between the radar device 20 that performs the display operation and the radar device 20 that has detected the object 15. For example, the display pattern data in which the type of display produced by the display device 30 of the radar device 20 that has detected the object 15 and the type of display produced by the display device 30 of another radar devices 20 are determined is prepared in advance, and the display mode of the display device 30 of each radar device 20 can be determined based on the display pattern data.
As described above, the radar system of this example includes the plurality of radar devices 20 for detecting an object by monitoring different areas. Each of the plurality of radar devices 20 includes the display device 30. When the object 15 is detected by any one of the plurality of radar devices 20, the display device 30 of the radar device 20 that has detected the object 15 (for example, the display device 30-2 of the radar device 20-2) displays the detection of the object 15. The display device 30 of another radar device 20 (for example, the display device 30-1 of the radar device 20-1) displays the position of the radar device 20 that detected the object 15.
With such a configuration, an operator who is in charge of removing a detected object can quickly move toward the monitoring area of the radar device that has detected the object, and search for the detected object in the monitoring area. Therefore, it is easy to search for the detected object in a wide area. As a result, it is possible to quickly eliminate a state in which facilities and equipments cannot be operated normally due to the presence of an object such as an obstacle or a falling object.
Here, in the radar system of this example, each display device 30 controls its own display contents. However, the display contents of the display device 30 may be controlled by another device. For example, the radar device 20 may control the display contents of its own display device 30. Further, for example, the radar control device 40 may collectively control the display contents of the display devices 30 of all the radar devices 20.
While the embodiments of the present disclosure have been described, these embodiments have been presented by way of example only, and are not intended to limit the scope of the disclosures. Indeed, the embodiments described herein may be embodied in a variety of other forms. Furthermore, various omissions, substitutions and changes in the form of the embodiments described herein may be made without departing from the spirit of the disclosures. The accompanying claims and their equivalents are intended to cover such forms or modifications as would fall within the scope and spirit of the disclosures.
Further, the present disclosure can be provided not only as the above-described devices and the system including those device, but also as a method performed by those devices, a program for causing a processor to execute the functions of those devices, a storage medium storing such a program in a computer-readable manner, or the like.
This application claims priority to Japanese Patent Application No. 2021-190794 filed on Nov. 25, 2021, the entire contents of which are incorporated herein by reference.
The present disclosure can be used for a radar system including a plurality of radar devices for detecting an object by monitoring different areas.
10: monitoring area, 15: object, 20 (20-1, 20-2, 20-3, 20-4): radar device, 21: signal control part, 22: transmitting part, 23: receiving part, 30 (30-1, 30-2, 30-3, 30-4): display device, 31: display control part, 32: display part, 40: radar control device
| Number | Date | Country | Kind |
|---|---|---|---|
| 2021-190794 | Nov 2021 | JP | national |
| Filing Document | Filing Date | Country | Kind |
|---|---|---|---|
| PCT/JP2022/041655 | 11/9/2022 | WO |
