System and program

Abstract

To provide a system that is superior to conventional ones in a radar detector.SOLUTION: In a radar detector, when "do not issue audio warning during suppression" is selected, a suppression process mutes audio output to a loudspeaker 20. As a result, even when a signal indicating microwaves received by a microwave receiver 11 is input to a control unit 18, no audio microwave warning will be issued. Consequently, only the warning will be displayed on a screen.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to, for example, a system and a program. [Background technology]

[0002] There is a known speed measurement system (radar) that emits microwaves toward a moving vehicle and measures the vehicle's speed based on the Doppler shift of the waves reflected from the vehicle. There is a radar detector that issues an alarm when it receives microwaves emitted from this speed measurement system, and this system contributes to safe driving by warning drivers who are accidentally speeding. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2017-96728 A Summary of the Invention [Problem to be solved by the invention]

[0004] However, conventional systems have had various problems. Therefore, an object of the present invention is to provide a system, program, etc. having better characteristics than conventional systems.

[0005] The object of the present invention is not limited to this, and the applicant intends to obtain rights for configurations that aim to achieve the effects achieved by parts of the configuration disclosed in the specification and drawings, etc., through divisional applications, amendments, etc. For example, this specification discloses problems in which the phrases "can" and "is possible" are read as "the problem is." Each problem is described as an independent problem, and the applicant intends to obtain rights for configurations that solve each problem separately through divisional applications, amendments, etc. Even if the problem is implicitly understood from the description in the specification, the applicant intends to claim part of the configuration described in this specification through amendments or divisional applications. Furthermore, the applicant has disclosed configurations that solve problems that combine these independent problems, and the applicant intends to obtain rights for them. [Means for solving the problem]

[0006] (1) A system may be provided which includes microwave receiving means capable of receiving microwaves in a predetermined frequency range including the frequency of radar waves used to measure the speed of a vehicle, and control means having a function for controlling the microwave receiving means and a function for controlling the issuing of an alarm when microwaves are received by the microwave receiving means, wherein the control means has a function for suppressing an alarm based on radio waves received by the microwave receiving means based on at least one of the limitations on the receiving sensitivity of the microwave receiving means, the characteristics of the radio waves received by the microwave receiving means, the frequency of the radio waves received by the microwave receiving means, the characteristics of the position at which the microwave receiving means receives the radio waves, and input information from means other than the microwave receiving means.

[0007] In this way, it is possible to provide users with a system that is superior to conventional systems. For example, when a vehicle equipped with this system approaches a new source of false alarms, which has recently become a problem, the number of false alarms can be reduced compared to conventional systems. The microwaves emitted from the speed measurement system are in the same frequency range as those emitted by vending machines to detect people, and microwaves emitted by vehicles to determine their relationship with other vehicles in front and behind. There have been growing problems with alarms being issued based on the reception of these microwaves, but this system can further reduce such problems.

[0008] In particular, the limitation of the receiving sensitivity of the microwave receiving means, the characteristics of the radio waves received by the microwave receiving means, the frequency of the radio waves received by the microwave receiving means, the characteristics of the location of the received waves, and the suppression of alarms based on input information from means other than the microwave receiving means may be configured to detect at least one of microwaves emitted by a vending machine or a vehicle to determine its relationship with other vehicles in front and behind. Unlike conventional automatic doors, vending machines are designed for unmanned sales and are therefore often installed in suburban areas where speed enforcement is more likely to be implemented. Furthermore, vehicles that emit microwaves to determine their relationship with other vehicles in front and behind them are mobile, which is a unique characteristic of the uncertainty of where they will be detected. This can reduce the problem of vending machines and other vehicles constantly sounding alarms, which can be noisy and make it difficult to understand the intended alarm. It can also solve the problem of vending machines and other vehicles constantly sounding alarms, which can lead to drivers switching off the alarm setting and thereby preventing the intended speed enforcement radar alarm from being sounded. This makes it possible to properly issue the intended alarm while avoiding false alarms based on microwaves from vending machines or vehicles that interfere with intended use.

[0009] "Suppression" may, for example, not issue an alarm, but may be implemented in a manner that is less noticeable than when the alarm is not suppressed. For example, if the alarm is configured to be issued by sound, the size of the alarm display may be made smaller than when the alarm is not suppressed. For example, if the alarm is configured to be issued by a screen display, the size of the alarm display may be made less noticeable (for example, by displaying it smaller) than when the alarm is not suppressed. If the alarm is issued by sound and display, for example, when the alarm is not suppressed, both the sound and display may be issued, while when the alarm is suppressed, the display may be issued without issuing an sound. The suppression of the alarm may involve reducing the sensitivity, canceling the alarm, or changing the content of the alarm. For example, it may be possible to notify the user of the presence of a source of a false alarm (for example, a vending machine, etc.). The "suppression" may be performed by controlling the microwave receiving means to reduce its sensitivity. The "alert" may be an alarm that notifies the detection of radar waves.

[0010] It is preferable to use a configuration in which the vending machine and the object to be alerted are distinguished from each other by a combination of other methods, particularly by input information from a means other than the microwave receiving means. The "other means" may be a means for detecting a vehicle that emits microwaves in order to grasp the relationship between the vehicle and other vehicles in front and behind the vending machine.

[0011] The "other means" may include, for example, an imaging means (such as a camera). The input information from the other means may be, for example, video information captured by the vehicle, and in particular, video information captured around the vehicle. The control of alarm suppression based on input information from the other means other than the microwave receiving means may, for example, determine whether or not video of a false alarm source is present in the video captured by the vehicle, and suppress the alarm if it is determined that such video exists. The false alarm source may be a vending machine or a vehicle that emits microwaves to determine its relationship with other vehicles in front and behind. In particular, it is preferable to configure the system as described below in (9) and (10).

[0012] The "other means" may include, for example, radio wave detection means for detecting radio waves other than microwaves provided in a device that emits microwaves that are the source of a false alarm (for example, a module for detecting WiFi and / or Bluetooth radio waves provided in a vending machine that emits microwaves). Examples of input information from other means may include a WiFi SSID or Bluetooth beacon information. Control of alarm suppression based on input information from other means that is not a microwave receiving means may involve, for example, radio wave detection means for detecting radio waves other than microwaves provided in a device that emits microwaves that are the source of a false alarm determining whether or not the radio waves have been detected, and suppressing the alarm if it is determined that the radio waves have been detected. Examples of false alarm sources may include a vending machine or a vehicle that emits microwaves to determine its relationship with other vehicles in front and behind. In particular, a configuration such as that described in (11) below is desirable.

[0013] (2) The control means has a function of suppressing an alarm based on radio waves received by the microwave receiving means based on the characteristics of the radio waves received by the microwave receiving means, and the characteristics of the radio waves are the modulation method of the radio waves, and it is preferable that the control means has a function of suppressing an alarm based on radio waves received by the microwave receiving means if the modulation method of the radio waves is not FSK modulation.

[0014] In this way, it is possible to suppress alarms caused by unmodulated microwaves emitted by, for example, vending machines. In this way, it is possible to suppress alarms caused by StepFM-modulated microwaves emitted by the vehicle itself or other vehicles. In the "case where FSK modulation is not used," it is particularly preferable to use at least either unmodulated or StepFM modulation, and particularly effective when both are used.

[0015] (3) The control means has a function to suppress an alarm based on the frequency of the radio waves received by the microwave receiving means, and the predetermined frequency range includes the frequency of microwaves emitted by vending machines and the frequency of microwaves emitted by other vehicles, and the control means has a function to suppress an alarm when the frequency of the radio waves deviates from the range of frequencies emitted by a specific speed measurement device.

[0016] This method can suppress alarms based on microwaves that deviate from the frequency range of the speed measurement device. This method is particularly effective when the microwave receiving means or control means has a function to sweep the reception frequency of the microwave receiving means within a predetermined frequency range. The "frequency of the radio waves" may be a frequency corresponding to a control value for scanning, or a frequency counter may be provided to measure the frequency of the received radio waves. This method is particularly useful for detecting false alarms from microwaves that do not overlap with the frequency range of the speed measurement device but are within the predetermined frequency range.

[0017] (4) The control means has a function to suppress alarms based on the frequency of the radio waves received by the microwave receiving means and a function to scan the receiving frequency of the microwave receiving means, and the scanning of the receiving frequency is preferably a function to scan a range in which the frequency of the radio waves includes the ranges of each frequency emitted by different models of speed measuring devices, and to skip ranges that deviate from the frequency ranges of all of the different models. In this way, warnings based on microwaves that fall outside the frequency range of the speed measuring device can be suppressed.

[0018] (5) A storage means for storing the location information of the vending machine; and the control means has a function for acquiring the current location of the vehicle and a function for suppressing an alarm based on the characteristics of the location received by the microwave receiving means, and preferably has a function for suppressing an alarm when the vehicle approaches the location of the vending machine stored in the storage means as the characteristics of the location received by the microwave receiving means. In this way, false alarms caused by microwaves emitted by vending machines can be reduced.

[0019] For example, the location of a vending machine is made public on an app for promoting the vending machine, so it is advisable to store that location and configure the system to suppress an alarm when microwaves are received while approaching that location.

[0020] (6) The control means may be configured to have a function of acquiring the current position of the vehicle, a function of limiting the receiving sensitivity of the microwave receiving means, and a function of suppressing an alarm based on the characteristics of the position received by the microwave receiving means, and a function of lowering the receiving sensitivity as a limiting factor when the vehicle approaches the position of a vending machine stored in the memory means as a characteristic of the position received by the microwave receiving means. In this way, false alarms caused by microwaves emitted by vending machines can be reduced.

[0021] For example, since the location of a vending machine is published on an app for promoting the vending machine, it is advisable to memorize the location and configure the device to control the microwave reception sensitivity to be lowered when microwaves are received while approaching that location. (7) The location of the vending machine may be the location of a vending machine installed along a road. This prevents the warning from being suppressed because the vehicle is approaching a vending machine that is not located along a road.

[0022] The storage means may be configured to store only the positions of vending machines installed along roads, or the device may be controlled so that it does not recognize the "approach" as occurring when the vehicle approaches a vending machine but is not located at a location that is a vending machine along a road. (8) It is preferable to perform control so that the degree of suppression varies depending on whether the vending machine is located on the right or left side of the vehicle's traveling direction. In this way, it is possible to more accurately suppress and issue an alarm.

[0023] For example, when the sensitivity is controlled to a level that allows reception of radio waves from vending machines on both sides of the road in the direction of travel, suppression control is performed at the vending machines on both sides, and when the sensitivity is controlled to a level that only receives radio waves from the vending machine on the left, suppression control is performed at the position of the vending machine on the left, but suppression control is not performed at the position of the vending machine on the left.

[0024] (9) The control means has a function to suppress an alarm based on radio waves received by the microwave receiving means based on input information from other means other than the microwave receiving means, and the other means has an imaging means capable of photographing the appearance of a device that emits microwaves that are a source of false alarms from the vehicle, and when the image photographed by the imaging means contains an image that matches the external characteristics of the device that emits microwaves that are a source of false alarms that have been stored in advance, the control means performs control to suppress the alarm. In this way, it is possible to more accurately suppress and issue an alarm. The source of the false alarm may be at least one of a vending machine and a vehicle that emits microwaves to determine the relationship with other vehicles in front and behind.

[0025] The "appearance of a device that emits microwaves and is a source of a false alarm that has been stored in advance" may include at least one of the appearance of a specific vending machine that emits microwaves and the appearance of a specific vehicle that emits microwaves. At least one of the appearances of vending machines that do not emit microwaves other than the specific vending machine and the appearance of vehicles that do not emit microwaves other than the specific vehicle may be configured not to be detected in the video, or may be configured not to suppress an alarm even if detected in the video.

[0026] As for "control to suppress the alarm when the image captured by the imaging means contains something that matches the external characteristics of a device that emits microwaves and is a source of a false alarm stored in advance," it is preferable to suppress the alarm or reduce the sensitivity of the microwave receiving means when the image contains something that matches the external characteristics of a device that emits microwaves and is a source of a false alarm. For example, it is preferable to suppress the alarm and / or reduce the sensitivity when a vending machine is being photographed with a camera.

[0027] (10) The imaging means is preferably installed so as to be able to photograph the area in front of the vehicle, and the manner in which the alarm is suppressed may be changed based on the location of any feature in the image captured by the imaging means that corresponds to the external characteristics of a device that emits microwaves and is the source of a false alarm. In this way, it is possible to more accurately suppress and issue an alarm.

[0028] As for the "configuration for changing the mode of alarm suppression based on the location of an object in the image captured by the imaging means that corresponds to the external characteristics of a device emitting microwaves that could be a source of a false alarm," for example, when the location of an object in the image captured by the imaging means that corresponds to the external characteristics of a device emitting microwaves that could be a source of a false alarm corresponds to the front left side of the vehicle, it is preferable to configure the suppression to be greater than when the location corresponds to the front left side of the vehicle. As a configuration for greater suppression, it is preferable to configure the suppression to be greater, for example, by significantly lowering the sensitivity. The inventors have found that the need to reduce false alarms is greater when there is a vending machine on the left than when there is a vending machine close to the vending machine on the right, and this makes it possible to more effectively suppress false alarms.

[0029] (11) The control means has a function of suppressing an alarm based on radio waves received by the microwave receiving means based on input information from other means other than the microwave receiving means, and the other means has radio wave detection means for detecting radio waves other than microwaves emitted by a device that emits microwaves that are a source of a false alarm, and when the radio wave detection means detects radio waves other than microwaves emitted by a device that emits microwaves that are a source of a false alarm, it is preferable that the control means performs control to suppress the alarm. In this way, it is possible to more accurately suppress and issue an alarm. The source of the false alarm may be at least one of a vending machine and a vehicle that emits microwaves to determine the relationship with other vehicles in front and behind.

[0030] The radio wave detection means may be, for example, a module that detects WiFi and / or Bluetooth radio waves provided in a vending machine that emits microwaves.

[0031] As an example of "control to suppress the alarm when the radio wave detection means detects radio waves other than microwaves emitted by a device that emits microwaves that are the source of a false alarm," it is possible to store in advance a list of SSIDs emitted from a WiFi module equipped in a vending machine that emits microwaves, and when microwaves are received, if WiFi radio waves of an SSID included in the list are also received, the alarm can be suppressed.

[0032] As for "control to suppress the alarm when the radio wave detection means detects radio waves other than microwaves emitted by a device that emits microwaves that are a source of a false alarm," it is preferable to store in advance a list of beacon information emitted from a Bluetooth module equipped in a vending machine that emits microwaves, and to suppress the alarm when the Bluetooth radio waves of beacon information included in the list are also received when microwaves are received. In particular, when there is another device of the same model that emits microwaves that are a source of a false alarm but emits the same information using radio waves other than microwaves, it is preferable to store that same information in a list, etc.

[0033] For example, the connection between a smartphone and a Coke ON vending machine is wireless via Bluetooth. An internet connection is required to process stamps, and the vending machine communicates with the internet via the customer's smartphone. A radio wave detection means for detecting radio waves for this purpose is preferable. The radio wave detection means may suppress the alarm when it receives unique information (such as a vending machine ID) contained in the detected radio waves and emitted from an object other than the object to be warned. For example, when it receives unique information, it may not issue an alarm even when it receives the radio waves and / or it may lower the sensitivity. The alarm may be suppressed by lowering the sensitivity, canceling the alarm, or changing the content of the alarm. For example, it may be configured to notify the user that a vending machine is present.

[0034] (12) The control means has a function of suppressing an alarm based on radio waves received by the microwave receiving means based on the characteristics of the radio waves received by the microwave receiving means, and at least one of the microwave receiving means or the control means has an SDR (software defined radio), and the control means is configured to determine whether to suppress the alarm based on characteristic information of a waterfall image generated by the SDR as an identification of the radio waves and characteristic information of a waterfall image of the radar wave that measures the vehicle speed in the absence of a pre-stored false alarm source. In this way, it is possible to more accurately suppress and issue an alarm.

[0035] The waterfall image may be drawn by plotting the frequency of the microwaves received by the microwave receiving means on one axis (for example, the lower limit frequency of the frequency band is one end of one axis, and the upper limit frequency of the frequency band is the other end of the axis), the time axis on the other axis, and a predetermined signal characteristic (for example, signal strength) at that frequency and at that time as a predetermined color (a first color (for example, blue) when it is relatively weak, and a second color (for example, red) different from the first color, with a gradation between the two). In this case, to obtain a wide dynamic range, each color and the corresponding signal characteristic (for example, signal strength) may be plotted. It is a good idea to set up a relationship with

[0036] The "feature information of the waterfall image of the radar wave measuring the vehicle speed in the absence of a pre-stored false alarm source" may be a trained model obtained by machine learning, with the waterfall image of the radar wave measuring the vehicle speed in the absence of a false alarm source within a predetermined time range as the alarm target, and the waterfall image in the presence of a false alarm source within the predetermined time range as the non-alarm target. The machine learning may be performed particularly by deep learning (DL), particularly by CNN, and the trained model may be a model trained by deep learning (e.g., a CNN configuration). For example, it may be configured by SDR waterfall + DL (CNN, etc.).

[0037] As a "configuration for determining whether to suppress the alarm based on the feature information of the waterfall image generated by the SDR and the feature information of the waterfall image of the radar wave that measures the vehicle speed when there is no pre-stored false alarm source," it is preferable to set the waterfall image of the radar wave that measures the vehicle speed when microwaves are received and there is no false alarm source within a predetermined time range as an alarm target, and the waterfall image when there is a false alarm source within the predetermined time range as a non-alarm target, and if the result of inference using a machine-learned trained model is determined to be an alarm target (for example, if the probability of being an alarm target is equal to or greater than a predetermined threshold), an alarm is issued without suppressing the alarm, and if the result of inference is determined to be a non-alarm target (for example, if the probability of being a non-alarm target is equal to or greater than a predetermined threshold), an alarm is suppressed. (13) It is preferable that the function of the control means of the system described in any one of (1) to (12) is realized by a program for causing a computer to realize the function.

[0038] The inventions described in (1) to (12) above can be combined in any way. For example, a configuration may be created by adding at least a portion of the configuration of at least one of the inventions described in (2) and subsequent items to all or a portion of the configuration of the invention described in (1). In particular, an invention may be created by adding at least a portion of the configuration of at least one of the inventions described in (2) and subsequent items to the invention described in (1). Furthermore, any configuration may be extracted from the inventions described in (1) to (12) and combined. The applicant of this application intends to obtain rights to inventions including these configurations. Furthermore, even if a description is made of "in the case of..." or "when...," it is not intended to describe a configuration that is limited to that case or time. These are merely examples of better configurations, and the applicant intends to obtain rights to configurations that are not in these cases or times. Furthermore, any descriptions that specify an order are not limited to this order. Configurations in which some parts are deleted or the order is changed are also disclosed, and the applicant intends to obtain rights to them. [Effects of the Invention]

[0039] According to the present invention, it is possible to provide a system and the like that is superior to conventional systems.

[0040] The effects of the present invention are not limited to these, and effects achieved by the configuration disclosed in the present specification and drawings, etc. are also disclosed, and the applicant intends to obtain rights to the configuration achieving such effects through divisional applications, amendments, etc. For example, in this specification, phrases such as "can" and "is possible" are descriptions that clearly indicate the effects achieved, and there are also parts that demonstrate effects even without the phrases "can" and "is possible." Furthermore, there are effects that can be understood from the configuration even without such phrases. [Brief explanation of the drawings]

[0041] [Figure 1] 1 is a diagram showing the configuration of a navigation device having a radar detection function, which is a preferred embodiment of the device according to the present invention. [Figure 2] FIG. 1 is a block diagram of a navigation device. [Figure 3] FIG. 2 is an explanatory diagram showing a display example of a display unit. [Figure 4] FIG. 10 is a diagram showing an example of a microwave reception alarm function setting screen. DETAILED DESCRIPTION OF THE INVENTION

[0042] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. Note that the embodiment shown below is one embodiment of the present invention, and the content of the present invention should not be interpreted as being limited based on the following description.

[0043] FIG. 1 shows an external view of a preferred embodiment of a navigation device with a radar detection function that incorporates a system according to the present invention, FIG. 2 shows a functional block diagram thereof, and FIG. 3 shows an example of a display form. As shown in FIG. 1, the navigation device comprises a portable device main body 2 that can be carried around and a cradle 3 that serves as an attachment member for holding the device. By attaching the device main body 2 to the cradle 3, the device functions as an in-vehicle navigation device, and by removing the device main body 2 from the cradle 3, the device functions as a portable navigation device (PND) powered by a built-in battery. Of course, it is not necessary to adopt a configuration in which the device main body 2 can be easily attached and detached from the cradle 3.

[0044] The device main body 2 is detachably attached to the cradle 3. The device main body 2 includes a flat, rectangular case main body 4. A display unit 5 is disposed on the front of the case main body 4. A touch panel 8 is provided on the display unit 5 to detect which part of the display unit 5 is touched, and warning lamps 9 are provided on both sides of the front. The cradle 3 includes a cradle main body 6 that holds the device main body 2 and a base 7 that positions the cradle main body 6 in any orientation at a predetermined location in the vehicle (e.g., the dashboard). The base 7 is attached to the dashboard or other surface by a suction cup on its bottom. The base 7 and the cradle main body 6 are connected via a connecting mechanism such as a ball joint so that they can rotate within a predetermined angular range. Because of the ball joint, the base 7 and the cradle main body 6 can rotate relative to each other within any angular range in three dimensions and maintain that position at any angular position due to frictional resistance at the joint. Therefore, the device main body 2 attached to the cradle main body 6 can also be positioned in any orientation on the dashboard.

[0045] Furthermore, one side of the case body 4 is provided with an SD memory card slot 21, into which an SD memory card 22 having map data and the like recorded therein can be inserted. Also, a DC jack 10 is provided on the side of the case body 4 where the SD memory card slot 21 is provided. The DC jack 10 is for connecting a cigarette lighter plug cord (not shown), and can be connected to a vehicle cigarette lighter socket via the cigarette lighter plug cord to receive power.

[0046] Meanwhile, a power switch and a USB connection section 23 are provided on the side opposite to the SD memory card slot section 21. By inserting one end of a USB cable into the connector of this USB connection section 23 and connecting the other end to a PC, software application updates and the like can be performed. Furthermore, during normal driving, by inserting a USB cable connecting to a drive recorder 26 into the connector of this USB connection section 23, the control section 18 can acquire video data captured by the drive recorder 26. The drive recorder 26 may be installed, for example, on the top of the windshield with its camera facing forward so that the capture area is the front.

[0047] The following devices and components are arranged inside the case body 4. A microwave receiver 11 is arranged inside the rear side of the case body 4. The microwave receiver 11 receives microwaves in a predetermined frequency band★ that includes the frequency of radar waves used to measure vehicle speed, and when it receives microwaves in the set frequency range, it detects the signal level of the received microwaves. Specifically, it uses the RSSI voltage, which is the signal level and corresponds to the field strength. The above-mentioned predetermined frequency band is, for example, a frequency band that includes the frequency of microwaves emitted from a vehicle speed measurement device.

[0048] Furthermore, a GPS receiver 12 that receives GPS signals and determines the current location is disposed inside the top surface of the case body 4. An infrared communication device 14 is disposed inside the front surface of the case body 4. The infrared communication device 14 transmits and receives data to and from a communication device that has a built-in infrared communication device, such as a mobile phone 15. Furthermore, a speaker 20 is also disposed inside the case body 4.

[0049] Furthermore, the device of this embodiment is equipped with a wireless receiver 13 and a remote control receiver 16. The wireless receiver 13 receives incoming wireless signals of a predetermined frequency. The remote control receiver 16 performs data communication with a remote control (portable device: slave device) 17 and performs various settings for the device. The wireless receiver 13 receives incoming wireless signals of a predetermined frequency band. This predetermined frequency is, for example, a wireless frequency band used when an emergency vehicle notifies a base station of its own location.

[0050] Furthermore, the device of this embodiment includes a Bluetooth module 24 for performing Bluetooth communication by transmitting and receiving Bluetooth wireless signals, and a WiFi module 25 for performing WiFi communication by transmitting and receiving WiFi wireless signals.

[0051] The navigation device of this embodiment is connected via a connection cable to a drive recorder installed above the windshield to record images of the area in front of the vehicle, and has a function in which the control unit 18 executes control to suppress alarms based on the image information captured by the drive recorder.

[0052] The navigation device of this embodiment has, in addition to a navigation function, a target detection function as a target detection device that detects targets such as vehicle speed measurement devices and other traffic monitoring points. All of these functions, including the navigation function and the target detection function, are stored in the EEPROM of the control unit 18 as programs to be executed by the computer in the control unit 18, and are realized by the computer executing these programs.

[0053] That is, the control unit 18 controls the various input devices (GPS receiver 12, microwave receiver 11, wireless receiver 13, touch panel 8, remote control receiver 16, etc.), executes predetermined processing based on information input from the various input devices, and controls output devices (display unit 5, alarm lamp 9, speaker 20, etc.) to output predetermined information, alarms, and messages. This predetermined processing is for executing each of the above functions, and accesses the database 19 and SD memory card 22 as necessary.

[0054] Here, database 19 can be realized by a non-volatile memory (e.g., EEPROM) inside the microcomputer of control unit 18 or externally attached to the microcomputer. At the time of shipment, database 19 stores certain landmarks, maps, and other information necessary for landmark detection and navigation, a list of vending machine location information, a list of Bluetooth beacon information emitted by the vending machine, and a list of WiFi SSID information emitted by the vending machine. Data added later can be updated through a predetermined process. This update process may be performed, for example, by inserting an SD memory card containing the additional data into SD memory card slot 21 and transferring the data from the SD memory card to database 19. This data update can also be performed using infrared communication device 7 or a personal computer or other external device connected via USB terminal 23.

[0055] The control unit 18 for realizing the target detection function operates as follows. That is, when the microwave receiver 11 receives microwaves, the control unit 18 controls to output a predetermined alarm (microwave alarm). This alarm can be a buzzer using the speaker 20, a voice output to notify the reception of microwaves (detection by a vehicle speed measurement device, etc.), or a message output in the form of text or an image using the display unit 5.

[0056] Furthermore, when the wireless receiver 13 receives a desired wireless signal, the control unit 18 outputs a predetermined warning (wireless warning). This warning may be a buzzer using the speaker 20, a voice output to notify the reception of microwaves (approaching emergency vehicles, etc.), or a message output using text or images on the display unit 5. It is preferable that the warning accompanying this wireless reception and the warning accompanying the above-mentioned microwave reception be in different formats.

[0057] Furthermore, the control unit 18 outputs a predetermined alarm (GPS alarm) when the current position detected by the GPS receiver 12 and the position of a target such as a traffic monitoring point stored in the database 19 are in a predetermined positional relationship. Therefore, the database 19 contains information about the target to be detected (target position information including longitude and latitude, target type information, etc.), traffic safety information for driving more carefully and safely such as accident-prone areas and traffic enforcement information, and various information about landmarks and driving that is useful. Each piece of information is registered in association with the specific type of information (target type, traffic enforcement type, accident-prone areas, landmark name, etc.) and the position information.

[0058] The distance to the target when issuing the warning can be changed depending on the type of target. As described above, warning modes include audio warnings using the speaker 20 and warnings using the display unit 5. FIG. 3 shows an example of a warning using the display unit 5. In this embodiment, since the device is a navigation device and has map data, the control unit 18 has a function of reading road network information around the current location and displaying a map of the area around the current location on the display unit 5 as a basic screen. Then, the display unit 5 displays a warning screen 70 superimposed on the currently displayed screen (here, the map of the area around the current location). FIG. 3 shows an example of the warning screen 70 displayed when the distance between the current location and an LH system, a type of speed measurement device that is a traffic monitoring point, becomes 500 m while the map 50 is displayed. Furthermore, a warning voice indicating the type of warning and the distance, such as "LH system 500 m ahead," is output from the speaker 20.

[0059] Meanwhile, to implement the navigation function, the control unit 18 operates as follows. First, the database 19 stores road network information for navigation. The information for navigation stored in this database 19 may contain all information for the entire country at the time of shipment, or map data and the like may be provided for each region stored in an SD memory card 22, and the user may prepare an SD memory card containing the necessary map data and insert it into the SD memory card slot 21 for use. The map data and the like stored in the SD memory card 22 may be transferred to and stored in the database 19, or the control unit 18 may access the SD memory card 22 and read and use the data from there.

[0060] The control unit 18 has the function of reading road network information around the current location from the database 19 and displaying a map of the area around the current location on the display unit 5. The control unit 18 can use this road network information to search for a route from one location to another. The database 19 also includes a telephone number database that stores telephone numbers in association with the location information and names of homes, businesses, facilities, etc. associated with those telephone numbers, and an address database that stores addresses in association with the location information of those addresses. The database 19 also stores the location information of traffic monitoring points such as speed measurement devices, along with their types. The control unit 18 also has a function of performing general processing for a navigation device.

[0061] For example, the display unit 5 may display a map of the area around the current location and a destination setting button. When the control unit 18 detects a press on the touch panel 8 at a position corresponding to the display position of the destination setting button, it performs a destination setting process. In the destination setting process, a destination setting menu is displayed on the display unit 5, and the control unit 18 prompts the user to select a destination setting method. The destination setting menu has a phone number search button and an address search button that prompt the user to select a destination setting method. When the control unit 18 detects that the phone number search button has been pressed, it displays a phone number input screen, and acquires location information corresponding to the entered phone number from the database 19. When the control unit 18 detects that the address search button has been pressed, it displays an address selection input screen, and acquires location information corresponding to the entered address from the database 19. The acquired location information is then set as the location information of the destination, and a recommended route from the current location to the destination is calculated based on road network information stored in the database 19. The road network information includes data similar to that of existing car navigation systems. For example, it has a plurality of road links connecting points such as branch points, and the road links have information such as their IDs, whether they are one-way streets or not, the latitude and longitude coordinates of the start and end points (each node), a list of IDs of road links connected to each of the start and end points, and the type of road, such as whether the road link is an expressway or an ordinary road. A known method such as Dijkstra's algorithm can be used to calculate the recommended route.

[0062] In addition, for example, the device provides route guidance based on a recommended route. That is, the device has a route guidance function that provides guidance along the recommended route when the current position acquired by the GPS receiver 12 approaches a branch point on the recommended route within a predetermined distance. For example, when the recommended route is a right turn 300 m from the current position, the device outputs a voice message from the speaker 20 saying "Turn right 300 m ahead," and displays a right arrow on the map.

[0063] Furthermore, the control unit 18 of this navigation device has a function to suppress alarms based on microwaves received by the microwave receiver 11 based on at least one of the following: limitations on the receiving sensitivity of the microwave receiver 11; characteristics of the radio waves received by the microwave receiver 11; the frequency of the radio waves received by the microwave receiver 11; characteristics of the location received by the microwave receiver 11; video data received from the drive recorder 26 connected via the USB connection unit 23; a Bluetooth beacon signal emitted by the vending machine received by the Bluetooth module 24; and WiFi SSID information emitted by the vending machine received by the WiFi module 25.

[0064] Which of the following suppressions is to be performed is determined on the microwave reception alarm function setting screen shown in Figure 4. The microwave alarm suppression function setting screen in Figure 4 is displayed when continuous touching for two seconds on a predetermined area on the map screen is detected on the touch panel 8. The predetermined area is one of the areas obtained by dividing the map screen into thirds vertically and fourths horizontally, and corresponds to the lower left area. The map screen is the default screen that is displayed when the startup process of this device is completed. In addition, if there is no operation on the various setting screens for five minutes, if the back button is pressed, or if the setting completion button is pressed, the screen will transition to a state where the map screen is displayed.

[0065] As shown in Figure 4, the microwave alarm reception function setting screen has the title "Microwave Alarm Reception Function Setting Screen" displayed at the top. Below that, there is a title string for "Alarm Suppression Target Items," which is a setting field for the items subject to alarm suppression control, as well as seven checkboxes and their names, as described below. Further below that, there is a title string for "Alarm Suppression Method," which is a setting field for the alarm suppression method, as well as three radio buttons and their names, as described below. Below that, there is a Cancel button with the word "Cancel" displayed on the left, and a Set button with the word "Set" displayed on the right. When switching from the map screen to the microwave alarm reception function setting screen, the current microwave alarm reception function settings are read from the database 19 and reflected in the display status of each checkbox and radio button. After the user changes the status of a checkbox or radio button, if the touch panel 8 detects that the Cancel button has been pressed, the previous settings are retained and the map screen is displayed. When it is detected on the touch panel 8 that the setting button has been pressed, the states of the check boxes and radio buttons at the time when the touch on the setting button was detected are stored as new settings in the database 19 and are also used for alarm suppression processing. In other words, if a check box is checked, the suppression processing of the items stored in the database 19 is performed in a multitasking manner during microwave alarm processing. If all items are unchecked, the suppression processing is not performed during alarm processing, and a microwave alarm is issued when microwaves are received by the microwave receiver 11.

[0066] The seven items for "Alarm suppression target items" are, from top to bottom, "Suppression by limiting microwave receiving sensitivity," "Suppression by characteristics of received microwave radio waves," "Suppression by frequency of received microwave radio waves," "Suppression by characteristics of location where microwaves are received," "Suppression by video data received from drive recorder," "Suppression by Bluetooth beacon signals emitted by vending machines," and "Suppression by WiFi SSID information emitted by vending machines." Each item name is displayed, and a check box to the left of each item name can be checked on or off.

[0067] The three items for "alarm suppression method" are, from top to bottom, "do not issue audio alarms during suppression," "do not issue any audio alarms during suppression," and "do not issue any audio alarms during suppression and display suppressed items during suppression," along with radio buttons for selecting one of these three items. Hereinafter, where "suppress" and suppression processing are described, which of these three items will be suppressed is determined based on information in database 19 that stores the setting states of these radio buttons, and the suppression described in that item is performed. For example, if "do not issue audio alarms during suppression" is selected, the suppression processing involves muting audio output to speaker 20. As a result, even if a signal indicating microwaves received by microwave receiver 11 is input to control unit 18, no audio microwave alarm will be issued. As a result, only the alarm will be displayed on the screen. If "do not issue any audio alarms during suppression" is selected, the suppression processing involves muting audio output to speaker 20 and canceling the display of the alarm screen on display unit 5. As a result, for example, if microwave reception starts after the suppression process starts and ends before the suppression process ends, no alarm will be issued during this microwave reception period. If suppression process starts during microwave reception after the microwaves are received, an alarm will be issued once, but the alarm will no longer be issued once the suppression process starts. When "Do not issue any alarms during suppression and display suppressed items" is selected, the suppression process involves muting audio output to the speaker 20, canceling the display of the alarm screen on the display unit 5, and displaying a string of characters with "Medium" added to the end of the name of the suppressed item on the map screen. For example, if suppression process is performed for "Suppression due to video data received from a drive recorder," the string "Suppressed due to video data received from a drive recorder" will be displayed on top of the map.If multiple items among the seven checkboxes are checked, the timing of suppression by each suppression process may differ. However, because each suppression process is performed in multitasking, the content of the suppression is displayed when the suppression is being performed for each suppression process. Therefore, the position at which the text is displayed during each suppression process is determined to be different in advance. In this embodiment, the display positions and display content of the seven item names in Figure 4 are displayed on the map in Figure 3 as positions and display content, superimposed on the map and warning screen, but it is also possible to perform an alarm suppression content display position adjustment process to adjust the display position of the currently suppressed alarm within the warning screen shown in Figure 3, for example.

[0068] (1) When the database 19 stores a check mark in the "Limited suppression of microwave reception sensitivity" item on the microwave reception warning function setting screen of Fig. 4, the control unit 18 sends a signal to the microwave receiver 11 to lower the reception sensitivity level compared to when the check mark is not in that item. When the microwave receiver 11 receives this signal, it reduces the reception sensitivity.

[0069] (2) When the database 19 stores a check mark in the "Suppression based on characteristics of received microwave radio waves" item on the microwave reception alarm function setting screen of Fig. 4, the control unit 18 determines whether the modulation method of the received signal input from the microwave receiver 11 to the control unit 18 is FSK modulation, and does not suppress the microwave alarm if it is FSK modulation, and suppresses the microwave alarm if it is not FSK modulation. Whether it is FSK modulation or not can be determined using a known configuration such as the configuration disclosed in JP 2017-96728 A.

[0070] In this way, it is possible to suppress warnings due to unmodulated microwaves emitted by, for example, vending machines, and it is also possible to suppress warnings due to StepFM modulated microwaves emitted by the vehicle itself or other vehicles.

[0071] (3) The control unit 18 has a function to sweep the reception frequency of the microwave receiver 11. The frequency range to be swept includes the microwave frequencies emitted by vending machines and other vehicles. If the database 19 stores a check mark for the "Suppression at the frequency of received microwave radio waves" item on the microwave reception warning function setting screen of FIG. 4, the control unit 18 suppresses the warning when the reception frequency set for the microwave receiver 11 deviates from the range of frequencies emitted by a specific speed measurement device pre-stored in the database 19. In other words, the warning is not suppressed when microwaves are received between the frequency range pq emitted by a specific speed measurement device within the sweep frequency range ab, but is suppressed when microwaves are received between the frequency range ab and the frequency range qb.

[0072] This configuration can suppress alarms based on microwaves that deviate from the frequency range of the speed measurement device. This configuration is particularly effective when the microwave receiver 11 or the control unit 18 has a function for scanning (sweeping) the reception frequency of the microwave receiver 11 within a predetermined frequency range, as in the present embodiment. This means that the sweep range remains unchanged, and alarm suppression can be easily achieved without changing various timing controls. This configuration is particularly useful for detecting microwaves from sources that cause false alarms but that are within the predetermined frequency range and do not overlap with the frequency range of a specific speed measurement device. The reception frequency may be a frequency corresponding to a control value for scanning, or a frequency counter may be provided to separately measure the frequency of the received radio waves. Furthermore, the reception frequency sweep may include a function for scanning a range of radio wave frequencies that includes the frequency ranges of different models of speed measurement devices, while skipping any ranges that deviate from the frequency ranges of all of the different models. This configuration can suppress alarms based on microwaves that deviate from the frequency range of the speed measurement device.

[0073] (4) If the database 19 stores a check mark in the “Suppression based on microwave reception location characteristics” item on the microwave reception alarm function setting screen of FIG. 4, the control unit 18 suppresses the alarm when the current location of the vehicle obtained from the GPS receiver 12 approaches any location in the list of vending machine location information stored in the database 19.

[0074] In this way, false alarms caused by microwaves emitted by vending machines can be suppressed. For example, the location of a vending machine is published on an app for promoting the vending machine, so the location can be stored and an alarm can be suppressed when microwaves are received while the device is approaching that location.

[0075] Furthermore, the control unit 18 may perform control to lower the reception sensitivity of the microwave receiver 11 during this suppression. In this way, false alarms caused by microwaves emitted by the vending machine can be suppressed. Note that the control to lower the reception sensitivity of the microwave receiver 11 during this suppression may be performed in addition to the suppression performed when the "Suppression by limiting microwave reception sensitivity" item is checked.

[0076] The locations of vending machines are published on apps for promoting vending machines, etc., so it is advisable to store those locations and control the microwave reception sensitivity to lower when microwaves are received while approaching that location. It is advisable to store the locations of vending machines in database 19 only for those installed along roads, and not for other locations. This prevents the suppression of an alarm due to an approach to a location of a vending machine not installed along a road. Database 19 may store the locations of vending machines regardless of whether they are installed along roads, and control may be exercised so that an approach to a vending machine location that is not a roadside location is not detected as an "approach." For example, if the proximity relationship between the location information in the road network data and the location of a vending machine is too far, the system may not recognize the approach as an "approach."

[0077] Furthermore, the degree of suppression may be varied depending on whether the location of the vending machine stored in database 19 is on the right or left side of the vehicle's direction of travel. This allows for more accurate warning suppression and warning. For example, when the sensitivity is controlled to a level that allows reception of radio waves from vending machines on both sides of the road in the direction of travel, the suppression control is performed on the vending machines on both sides, and when the sensitivity is controlled to a level that only receives radio waves from the vending machine on the left, the suppression control is performed on the vending machine on the left, but the suppression control is not performed on the vending machine on the left.

[0078] (5) If the database 19 stores a check mark in the “Suppression based on video data received from drive recorder” item on the microwave reception alarm function setting screen of Figure 4, the control unit 18 receives video data transmitted from the drive recorder 26 via the USB connection unit 23, and suppresses the microwave alarm when it determines that the received video data contains any external characteristics that match those of a device that emits microwaves that are the source of a false alarm.

[0079] As a source of false alarms, characteristic information of vehicles that emit microwaves to understand the relationship between the vending machine and other vehicles in front and behind is stored in database 19 (a trained model trained using drive recorder footage including the relevant vending machine and vehicle using CNN), and the trained model is read onto RAM, and the received video data is input into the trained model to perform inference, obtaining as the inference result the probability that the relevant vending machine exists and the probability that the relevant vehicle exists in the video data.If the probability that the relevant vending machine exists is a predetermined value or higher (e.g., 80% or higher), it is determined that there is something that matches the external characteristics of the vending machine, and if the probability that it matches the relevant vehicle is a predetermined value or higher (e.g., 80% or higher), it is determined that there is something that matches the external characteristics of the vehicle.

[0080] Furthermore, the control unit 18 may further suppress the false alarm more effectively when the location of an object corresponding to the external characteristics of a microwave-emitting device that is the source of the false alarm in the video captured by the drive recorder 26 corresponds to the front left side of the vehicle than when the object is located at the front left side of the vehicle. A configuration for suppressing the false alarm more effectively may be, for example, to significantly reduce the sensitivity. The inventors have found that the need for reducing false alarms is greater when a vending machine is located on the left than when the vending machine is located closer to the right side, and this allows for more effective suppression of false alarms.

[0081] (6) If the database 19 stores a check mark for the “Suppression by Bluetooth beacon signals emitted by vending machines” item on the microwave reception alarm function setting screen of FIG. 4, when the Bluetooth beacon signal is received by the Bluetooth module 24, the control unit 18 determines whether the Bluetooth beacon signal corresponds to any of the signals in the list previously stored in the database 19, and if so, performs control to suppress the microwave alarm.

[0082] (7) If the database 19 stores a check mark in the “Suppression of WiFi SSID information emitted by vending machines” item on the microwave reception alarm function setting screen of FIG. 4, when the SSID is received by the WiFi module 25, the control unit 18 determines whether the SSID corresponds to any of the SSIDs in the list previously stored in the database 19, and if so, performs control to suppress the microwave alarm. By adopting the above (6) and (7), it is possible to more accurately suppress and issue warnings.

[0083] The connection between the vending machine and the purchaser's smartphone is established wirelessly via Bluetooth. An internet connection is required for the vending machine to provide stamps to purchasers via a smartphone app, and the vending machine communicates with the internet via the customer's smartphone. It is preferable to determine whether the Bluetooth signal is intended for this purpose. The control unit 18 may suppress an alarm when it determines that it has received unique information (such as a unique ID) from the vending machine or vehicle.

[0084] (8) In the above-described embodiment, an example was described in which the microwave receiver 11 used in a radar detector that has been commercially available was used. However, the microwave receiver 11 and the control unit 18 may be configured as a software-defined radio. For example, the microwave receiver 11 may be configured to output a so-called IQ signal (for example, the microwave receiver 11 may be a microwave receiver similar to the receiving circuit described in Japanese Patent Application Publication No. 2019-61643). The control unit 18 receives this IQ signal as IQ data using an AD converter provided in the control unit 18. The control unit 18 generates a so-called waterfall image from the input IQ data during SDR processing. Then, based on feature information of this waterfall image and feature information of a waterfall image of radar waves measuring vehicle speed when there is no false alarm source, which is stored in advance in database 19, the control unit 18 determines whether to suppress an alarm. The waterfall image may be drawn with the frequency of the microwaves received by the microwave receiver 11 on one axis (for example, the lower frequency of the frequency band at one end of one axis and the upper frequency of the frequency band at the other end of the other axis), the time axis on the other axis, and a predetermined signal characteristic (for example, signal strength) at that frequency at that time as a predetermined color (a first color (for example, blue) when it is relatively weak, and a second color (for example, red) different from the first color when it is relatively strong, with a gradation between the two). In this case, the relationship between each color and the corresponding signal characteristic (for example, signal strength) is set so as to obtain a wide dynamic range.

[0085] Note that, as feature information for a waterfall image of radar waves measuring vehicle speed when there is no pre-stored false alarm source, a trained model can be created by machine learning, with a waterfall image of radar waves measuring vehicle speed when there is no false alarm source within a predetermined time range as the alarm target, and a waterfall image when there is a false alarm source within a predetermined time range as the non-alarm target. Machine learning is particularly preferably performed using deep learning (DL), and particularly preferably using CNN, and the trained model can be a model trained by deep learning (e.g., a CNN configuration). For example, it can be configured using SDR waterfall + DL (CNN, etc.).

[0086] A configuration for determining whether to suppress an alarm based on feature information of a waterfall image generated by an SDR and feature information of a waterfall image of a radar wave measuring vehicle speed when there is no pre-stored false alarm source may be configured such that, when microwaves are received, a waterfall image of radar waves measuring vehicle speed when there is no false alarm source within a predetermined time range is treated as an alarm target, and a waterfall image when there is a false alarm source within a predetermined time range is treated as a non-alarm target. If the inference results from a machine-learned trained model are determined to be an alarm target (e.g., if the probability of being an alarm target is equal to or greater than a predetermined threshold), an alarm is issued without suppressing the alarm; if the inference results are determined to be a non-alarm target (e.g., if the probability of being a non-alarm target is equal to or greater than a predetermined threshold), an alarm is suppressed. For example, this suppression process may be the same as the process described in (5) above. (9) Summary

[0087] According to the above-described embodiment, it is possible to provide users with a radar detection function that is superior to conventional radar detection functions. For example, when a vehicle equipped with this device approaches a vending machine that emits microwaves, which are a new source of false alarms that have recently become a problem, or a vehicle that emits microwaves to determine the relationship with other vehicles in front and behind, the number of false alarms can be reduced compared to conventional radar detection functions. The microwaves in the same frequency range as those emitted by the speed measurement system include those emitted by vending machines for human detection purposes and those emitted by vehicles to determine the relationship with other vehicles in front and behind. The issuance of alarms based on reception of these microwaves has become a growing problem, but this device can further reduce such problems.

[0088] In particular, the limitations on the receiving sensitivity of the microwave receiver 11, the characteristics of the radio waves received by the microwave receiver 11, the frequency of the radio waves received by the microwave receiver 11, the characteristics of the location where the microwave receiver 11 receives the signal, and the suppression of alarms based on input information from the drive recorder 26, Bluetooth module 24, and WiFi module 25, other than the microwave receiver 11, are implemented to detect microwaves emitted by vending machines or vehicles to determine their relationship with other vehicles in front and behind. Unlike conventional automatic doors and other devices, vending machines are designed for unmanned sales and are therefore often installed in suburban areas where speed enforcement is more likely to be implemented. Furthermore, vehicles that emit microwaves to determine their relationship with other vehicles in front and behind them are mobile, which is a unique characteristic of the vehicle's location being unpredictable. The configuration of this embodiment can reduce the problem of vending machines and other vehicles constantly sounding alarms, which can be noisy and make it difficult to understand the intended alarm. It can also solve the problem of vending machines and other vehicles constantly sounding alarms, which can lead to users switching off the alarm setting and thereby preventing the intended speed enforcement radar alarm from sounding. This makes it possible to avoid false alarms based on microwaves from vending machines or vehicles that interfere with the intended use, while still issuing the intended alarm.

[0089] According to this embodiment, it is possible to set the alarm not to be issued, or to set the alarm to be issued in a manner that is less noticeable than when the alarm is not suppressed, such as by only issuing a screen alarm and not an audio alarm.

[0090] In addition, when the alarm is configured to be issued by sound, the alarm may be suppressed so that it is smaller than when the alarm is not suppressed. For example, when the alarm is configured to be issued by a screen display, the size of the alarm display may be made less noticeable (for example, displayed smaller) than when the alarm is not suppressed.

[0091] To suppress the alarm, as in the present embodiment, the sensitivity may be reduced or the alarm may be cancelled, or the content of the alarm may be changed. Alternatively, for example, the presence of a false alarm source (such as a vending machine) may be notified by displaying the information on the display unit 5. As in the embodiments (5), (6), and (7), a configuration may be provided that can identify the type of false alarm source, and the identified type of false alarm source (such as "Detecting a vending machine that is the source of a false alarm" or "Detecting a vehicle that is the source of a false alarm") may be further displayed on the display unit 5.

[0092] The scope of the present invention is not limited to the structures explicitly described in the specification, but also includes combinations of various aspects of the present invention disclosed herein. The structures of the present invention that are sought to be patented are specified in the appended claims, but it is the intention of the present inventors to claim structures disclosed in this specification in the future, even if they are not currently specified in the claims.

[0093] The present invention is not limited to the configurations described in the above-described embodiments. The components of each of the above-described embodiments and variations may be arbitrarily selected and combined. Furthermore, any component of each embodiment or variation may be arbitrarily combined with any component described in the Summary of the Invention or any component embodying any component described in the Summary of the Invention. The present invention also intends to obtain rights to these configurations through amendments or divisional applications of the present application. Even if a description is made of "in the case of..." or "when...," it is not intended to describe a configuration limited to that case or time. Configurations that are not limited to those cases or times are also disclosed, and the present invention intends to obtain rights to them. Furthermore, any descriptions that specify an order are not limited to this order. Configurations in which some parts are deleted or the order is changed are also disclosed, and the present invention intends to obtain rights to them.

[0094] Furthermore, we intend to obtain rights to the overall design or partial design by converting the application to a design registration. The drawings depict the entire device in solid lines, but they also include partial designs claimed for parts of the device. For example, a partial design can be a partial design for a part of the device, or a part of that part. A partial design can be a part of the device, or a part of that part. We intend to obtain rights not only for the overall design, but also for partial designs in which any part of the solid line portion of the drawing is drawn as a broken line. Furthermore, all of the modules, components, and parts inside the device's casing, shown in the drawings, are subject to independent commerce, and we intend to similarly obtain rights by converting the application to a design registration. [Explanation of symbols]

[0095] 2. Device body 3 Cradle 4 Case body 5 Display section 6 Cradle body 7 Base 8 Touch Panel 9. Warning lamp 11 Microwave receiver 12 GPS receiver 13 Radio receiver 18 Control Unit 19 Databases 20 speakers 21 SD memory card slot 22 SD memory card 23 USB connector 24 Bluetooth modules 25 WiFi module 26 Drive Recorder

Claims

1. A radar detector equipped with a function that uses a trained model developed through machine learning to determine whether received radar waves are subject to an alarm.

2. 2. A radar detector as described in claim 1, wherein an IQ signal is output from a microwave receiving unit, and a control unit captures the IQ signal as IQ data using an AD converter, performs SDR processing on the IQ data, and uses the data obtained by the SDR processing for the judgment using the trained model.

3. 3. A radar detector as described in claim 2, which generates a waterfall image by processing the SDR, performs inference using the trained model using feature information of the waterfall image, and determines whether the received radar wave is a target for an alarm.

4. 3. A radar detector according to claim 1 or 2, wherein the trained model is a model trained by deep learning.

5. 5. A radar detector as described in claim 3 or 4, wherein a waterfall image of radar waves measuring the speed of a vehicle when there is no source of false alarm within a predetermined time range is set as an alarm target, and a waterfall image when there is a source of false alarm within a predetermined time range is set as a non-alarm target, and the radar detector uses a trained model trained based on the feature information of these waterfall images.

6. A radar detector as described in any one of claims 1 to 5, which, when receiving microwaves, issues an alarm without suppressing the alarm if the result of inference using the trained model determines that the object is subject to an alarm, and suppresses the alarm if the result of the inference determines that the object is not subject to an alarm.

7. A program for causing a computer to realize the functions of the radar detector according to any one of claims 1 to 6.

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