JP2024004636A - System and others - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a system different from conventional ones, which provides information that helps a user to drive in a preferable manner in response to reception of an electromagnetic wave emitted from a speed measurement device, for example.

SOLUTION: An electronic device 10 is provided, comprising a reception unit configured to receive an electromagnetic wave for speed measurement emitted from a speed measurement device 30 for measuring speed of a vehicle 40, and a control unit configured to provide control to notify a user in response to the electromagnetic wave received by the reception unit, where the control unit makes a first notification for urging deceleration of the vehicle as a notification to the user.

SELECTED DRAWING: Figure 1

COPYRIGHT: (C)2024,JPO&INPIT

Description

The present invention relates to, for example, a system.

There are various systems for measuring the speed of vehicles traveling on roads. Patent Document 1 discloses an electronic device that receives microwaves emitted from a vehicle speed measuring device and outputs an alarm when the presence of the vehicle speed measuring device is detected. Patent Document 2 discloses an electronic device that receives laser light from a speed measuring device and provides notification.

JP2008-64588A Japanese Patent Application Publication No. 2020-112357

One of the objects of the present invention is to provide a system different from the conventional ones, for example, to provide information that contributes to a user's preferable driving in response to reception of electromagnetic waves emitted from a speed measuring device.

The purpose of the present invention is not limited thereto, and the present invention intends to acquire rights through divisional applications, amendments, etc. for structures that aim to obtain effects from the parts of the structures disclosed in this specification, drawings, etc. For example, the present specification discloses a problem in which passages such as ``can be done'' or ``possible'' are read as ``the problem is.'' Each issue is described as an independent entity, and we intend to acquire rights to the structure for solving each issue individually through divisional applications, amendments, etc. Even if the problem is implicitly understood from the description of the specification, the present applicant has the intention to claim a part of the structure described in the specification in an amendment or divisional application. The company also discloses a structure that solves a problem that combines these independent problems, and has the intention to acquire the rights to it.

(1) A receiving unit that receives electromagnetic waves for measuring the speed emitted from a speed measuring device that measures the speed of a vehicle, and a control unit that performs control to notify the user according to the electromagnetic waves received by the receiving unit. It is preferable that a system is provided, wherein the control unit performs a first notification to urge the vehicle to decelerate as a notification to the user.

In this way, the user can recognize the notification prompting the vehicle to decelerate as the notification in response to the receiving section receiving the electromagnetic waves emitted from the speed measuring device. The user can use this notification as motivation to drive the vehicle in a manner that decelerates the vehicle.

The speed measuring device images the vehicle with a camera when the measured speed of the vehicle is equal to or higher than a predetermined speed, for example, when the speed exceeds a speed limit. Further, some speed measuring devices use a range of a predetermined distance from the main body as an area (also referred to as a measurement area) for measuring the speed of a vehicle. Such a speed measuring device is capable of measuring speeds when the speed difference between a first point at a first distance from the main body and a second point at a second distance from the main body exceeds a predetermined speed difference within the predetermined distance range. In this case, the vehicle is not imaged, but if the speed difference is less than or equal to a predetermined speed difference, the image is taken. In other words, the speed measurement device does not image the vehicle if the acceleration exceeds the predetermined value at the first point and the second point within the predetermined distance, but if the acceleration is less than the predetermined value, the speed measuring device does not image the vehicle. takes an image. The range of the predetermined distance may be, for example, a range of 20 m to 70 m from the speed measuring device. The first distance may be, for example, 25 m. The second distance may be, for example, 30 m. The predetermined speed difference may be, for example, 1.5%, and the acceleration exceeding the predetermined value may be, for example, an acceleration exceeding 1.5%. The predetermined speed difference may be, for example, the absolute value of the speed difference. The acceleration exceeding the predetermined value may mean, for example, that there is acceleration or deceleration (that is, acceleration/deceleration) exceeding the predetermined value, and that the absolute value of the acceleration exceeds the predetermined value. The reason why the first notification is made to prompt the vehicle to decelerate is based on the inventor's knowledge that speed measuring devices with such characteristics exist. Further, the user who recognizes the notification urging the vehicle to decelerate starts driving to decelerate the vehicle, which can also contribute to safe driving for the user. The electromagnetic waves emitted by the speed measuring device may be, for example, laser light, but may also be radar waves or the like.

It is particularly good if the first notification is a special notification different from the conventional one. The special notification is one type of notification when the vehicle has a predetermined approach relationship with the speed measuring device, but it may be a special notification that is different from notifications that can be made in other cases. As a notification urging the vehicle to decelerate, for example, a message "Please continue decelerating" may be output by display, voice, or a combination thereof. The notification is not limited to display or sound, and notification using light emission or other human-perceivable methods may be used.

(2) The control unit may perform the first notification when the intensity of the electromagnetic waves received by the reception unit is improving.

In this way, when the vehicle approaches the speed measuring device and the strength of the electromagnetic waves increases, the user can recognize the notification urging the vehicle to decelerate. For example, the user can reduce the possibility that the vehicle will be imaged by the speed measuring device, while also contributing to the user's safe driving. The control unit may, for example, identify the intensity of the electromagnetic wave based on a signal (also referred to as a light reception signal) output from the light reception unit. For example, the control unit may acquire signals from the light receiving unit at predetermined time intervals and sequentially identify the intensity of the electromagnetic waves. A case where the strength of the electromagnetic waves has improved is, for example, a state where the state of receiving electromagnetic waves at a first strength has changed to a state where electromagnetic waves are being received at a second strength that is higher than the first strength. It would be better to say the case. Alternatively or in addition to this, the case where the intensity of electromagnetic waves has improved may be said to be a case where the state changes from a state in which electromagnetic waves are not being received to a state in which electromagnetic waves are being received. For example, the control unit may perform the first notification during part or all of the period during which the intensity of the specified laser beam is increasing.

(3) The control unit may perform the first notification when the acceleration of the vehicle when the electromagnetic wave is being received is less than or equal to a predetermined value.

In this way, the user can recognize the notification urging the vehicle to decelerate if the acceleration of the vehicle when the electromagnetic waves are being received is less than or equal to a predetermined value. For example, when a user receives this notification, they will be aware that if they continue to drive as they are, there is a high possibility that they will be imaged by a speed measuring device, and this will motivate them to drive with more consideration to the speed of the vehicle. be able to. The predetermined value may be determined based on the conditions regarding the acceleration imaged by the speed measuring device, and may be set to an acceleration of 1.5%, for example.

(4) The control unit may perform the first notification when a speed difference between the vehicles when the electromagnetic waves are being received is less than or equal to a predetermined value.

In this way, the user can recognize the notification urging the vehicle to decelerate if the speed difference between the vehicles when the electromagnetic waves are being received is less than or equal to the predetermined value. For example, when a user receives this notification, they will be aware that if they continue to drive as they are, there is a high possibility that they will be imaged by a speed measuring device, and this will motivate them to drive with more consideration to the speed of the vehicle. be able to. The predetermined value may be determined based on the conditions regarding the speed difference imaged by the speed measuring device, and may be set to a speed difference of 1.5%, for example.

(5) The control unit may perform control to display an accelerometer indicating the acceleration of the vehicle when performing the first notification.

In this way, when a user is notified of a request to decelerate, the user can see the acceleration of the vehicle displayed on the accelerometer and drive the vehicle to decelerate. For example, the user can refer to the accelerometer to drive at a reduced speed so that the vehicle is less likely to be imaged by the speed measuring device.

The accelerometer may be an accelerometer that displays the current acceleration of the vehicle. The accelerometer may be an accelerometer that displays past acceleration of the vehicle, for example, an acceleration history. For example, the accelerometer may display a line that changes its slope depending on the magnitude of the acceleration of the vehicle. Further, as the notification, for example, it is preferable to output a sound whose pitch corresponds to the magnitude of the slope of the line which corresponds to the magnitude of the acceleration. Furthermore, for example, when the magnitude of acceleration is a magnitude corresponding to sudden acceleration or sudden deceleration, it is preferable that a predetermined notification is made by voice. For example, a line indicating the magnitude of acceleration may be displayed overlaid on a graph in which the horizontal axis is the time axis and the vertical axis is the speed of the vehicle.

(6) The system according to claim 5, wherein the control unit performs a second notification to prompt a change in the acceleration of the vehicle when the acceleration of the vehicle is not changing.

In this way, when the acceleration of the vehicle is not changing, the second notification can be used as motivation for driving that causes a change in the acceleration of the vehicle. The second notification may be a notification urging deceleration like the first notification, but may be another notification urging a change in acceleration. Such notification may be, for example, notification at a higher level. In addition to cases where the vehicle's acceleration is zero, examples of no change in the vehicle's acceleration include cases where the vehicle's acceleration can be considered to be virtually unchanged, such as when the vehicle's acceleration is close to zero. It is especially good if you do this.

(7) The control unit may issue the second notification when the speed of the vehicle exceeds or is likely to exceed the speed limit, and the acceleration of the vehicle has not changed. good.

In this way, when the speed of the vehicle exceeds or may exceed the speed limit and the acceleration of the vehicle has not changed, the user can receive the second notification regarding the change in the acceleration of the vehicle. It can be used as a motivation for driving that causes The second notification may be a notification urging deceleration like the first notification, but it may be a different notification, for example, a notification of a higher level. For example, since the speed of the vehicle exceeds or may exceed the speed limit, the level of notification may be higher than (6). In addition to cases where the vehicle's acceleration is zero, examples of no change in the vehicle's acceleration include cases where the vehicle's acceleration can be considered to be virtually unchanged, such as when the vehicle's acceleration is close to zero. It is especially good if you do this.

(8) When the control unit determines that the vehicle has passed the position of the speed measuring device, it notifies the vehicle that the vehicle may have been overspeeding, and also provides information as to whether the vehicle has passed while the vehicle is decelerating. It is preferable to make a third notification.

In this way, when the user passes the location of the speed measuring device, the user can grasp the possibility that the vehicle was overspeeding and the information as to whether the vehicle passed while the vehicle was decelerating. For example, the user can be aware of the possibility that the vehicle will be imaged by the speed measuring device after passing the location of the speed measuring device.

(9) The control unit may cause the speed measuring device to detect the speed of the vehicle based on the time when the receiving unit stopped receiving the electromagnetic waves and the history of the speed of the vehicle when the electromagnetic waves were being received. It is preferable to perform a fourth notification that provides information on the traveling speed at the point where the speed is measured.

In this way, the user can grasp information about the traveling speed at the point where the speed of the vehicle is measured by the speed measuring device. For example, the user can be aware of the possibility that the vehicle will be imaged by the speed measuring device after passing the location of the speed measuring device.

(10) The control unit may cause the speed measuring device to detect the speed of the vehicle based on the time when the receiving unit stopped receiving the electromagnetic waves and the history of the speed of the vehicle when the electromagnetic waves were being received. It is preferable to perform a fifth notification that provides information on acceleration and deceleration of the vehicle within the area where the speed is measured.

In this way, the user can grasp information on acceleration and deceleration of the vehicle within the area where the speed of the vehicle is measured by the speed measuring device. For example, the user can be aware of the possibility that the vehicle will be imaged by the speed measuring device after passing the location of the speed measuring device.

(11) Preferably, the speed measuring device emits a laser beam as the electromagnetic wave, and the receiving section includes a light receiving section that receives the laser beam.

In this way, the user can recognize the notification prompting the vehicle to decelerate as the notification when the light receiving section receives the laser light emitted from the speed measuring device. The user can use this notification as motivation to drive the vehicle in a manner that decelerates the vehicle.

(12) It is preferable that the control unit performs processing according to the situation of a parallel vehicle at a position closer to the speed measuring device.

In this way, processing can be performed in accordance with the situation of the parallel vehicle at a position closer to the speed measuring device. For example, some speed measuring devices do not capture an image when a parallel vehicle approaches a predetermined distance from the vehicle. In such a case, processing can be performed depending on the possibility that the vehicle will be measured by the speed measuring device. For example, if the receiving section is located in front of the speed measuring device and is receiving electromagnetic waves from the speed measuring device, then when the receiver has a predetermined proximity relationship with the speed measuring device, can be processed.

(13) The process according to the situation of the parallel vehicle may include a process of notifying the user.

In this way, the user can recognize the notification according to the situation of the vehicle running alongside the user's own vehicle. The user can drive according to this notification. As for the notification, it is preferable that the user be notified of content depending on the possibility that the vehicle will be measured by the speed measuring device.

(14) The process of notifying the user may include a process of notifying the user to encourage running alongside other vehicles.

In this way, the user can recognize the notification urging the user to run alongside other vehicles. The user can be motivated to drive alongside other vehicles. For example, if there is a speed measuring device that does not take an image when a parallel vehicle approaches a predetermined distance from the vehicle, it is possible to make it difficult for the vehicle to be imaged by the speed measuring device.

(15) The process according to the situation of the parallel vehicle may include a process of acquiring an image captured by a camera disposed on the vehicle and recording the acquired image.

In this way, the user can later check the image captured by the camera disposed on the vehicle, which is recorded according to the situation of the vehicle running alongside the user's own vehicle. For example, if the receiving section is located in front of the speed measuring device and is receiving electromagnetic waves from the speed measuring device, the user can check the situation of the parallel vehicle when it has a predetermined approach relationship with the speed measuring device. , can be confirmed using an image taken with a camera.

(16) The speed measuring device emits a laser beam as the electromagnetic wave, the receiving section has a light receiving section that receives the laser beam, and the control section performs notification in response to reception of the laser beam. It is preferable to record the traveling direction of the vehicle when the vehicle is traveling.

In this way, if the sun is in a low position, the signal output from the light receiving section (also called the light receiving signal) may become saturated, but the user can use it as a reference to understand the influence of the sun. Information on the vehicle's heading can be confirmed later.

(17) The control unit preferably records the image captured by the camera and the traveling direction in a data format that can be reproduced by software having a function to reproduce the image captured by the camera.

In this way, the user can play back the image captured by the camera, displaying the image captured by the camera and the traveling direction of the vehicle, which is useful for understanding the influence of the sun when the image was captured. This can be confirmed on software that has the function of As a camera, it is particularly good to use a drive recorder. The software may be a viewer for a drive recorder. It is particularly preferable that the image captured by the camera and the record of the vehicle's traveling direction be in a data format that allows reproduction of the image and the vehicle's traveling direction at the same time.

(18) The speed measuring device emits a laser beam as the electromagnetic wave, the receiving section has a light receiving section that receives the laser beam, and the control section performs notification in response to reception of the laser beam. It is preferable to record the state of reception of visible light by the light receiving section when the light receiving section is in use.

In this way, if the sun is in a low position, the signal output from the light receiving section (also called the light receiving signal) may become saturated, but the user can use it as a reference to understand the influence of the sun. The state of visible light reception by the light receiving unit can be checked later. The light reception state may indicate the state of light reception, for example, the light reception intensity, the amount of light reception, energy distribution, or the quality of light reception.

(19) It is preferable to record the light reception state of the laser light as well as the light reception state of visible light by the light receiving unit when the notification according to the reception of the laser light is being performed.

In this way, the user can check the state of reception of visible light by the light receiving unit, which is useful for understanding the influence of the sun, as well as the state of reception of laser light at that time.

(20) The control unit preferably records the image captured by the camera and the state of reception of the visible light in a data format that can be reproduced by software having a function to reproduce the image captured by the camera. .

In this way, the user can check the image captured by the camera and the visible light reception state, which is useful for understanding the influence of the sun when the image was captured. It can be confirmed on software that has the function to play. As a camera, it is particularly good to use a drive recorder. The software may be a viewer for a drive recorder. It is particularly preferable that the image captured by the camera and the recording of the visible light reception state be in a data format that allows reproduction of the image and the visible light reception state at the same time.

(21) It is preferable that a computer be provided with a program for realizing the functions of any of the above systems.

In this way, the user can recognize the notification urging the vehicle to decelerate as the notification when the electromagnetic wave emitted from the speed measuring device is received by the receiving section. The user can use this notification as motivation to drive the vehicle in a manner that decelerates the vehicle.

The inventions shown in (1) to (21) above can be combined arbitrarily. For example, at least a part of the structure of at least one invention described in (2) and subsequent ones may be added to all or part of the structure of the invention shown in (1). In particular, it is preferable to create an invention in which at least a part of the structure of at least one invention after (2) is added to the invention shown in (1). Alternatively, arbitrary configurations may be extracted from the inventions shown in (1) to (21) and the extracted configurations may be combined. The applicant of this application intends to acquire rights to inventions containing these structures. Furthermore, even if there is a description of "in the case of" or "at the time of", the description is not intended to be limited to those cases or times. These are examples of better configurations, and we intend to acquire rights to these cases and other configurations as well. Furthermore, the sections described in order are not limited to this order. It also discloses a configuration in which some parts have been deleted or the order has been changed, and we have the intention to acquire the rights.

According to the present invention, it is possible to provide a system different from the conventional one, and to provide information that contributes to a user's preferred driving, for example, in response to reception of electromagnetic waves emitted from a speed measuring device.

The effects of the invention of the present application are not limited to these, but the effects obtained from the parts of the structure disclosed in the specification, drawings, etc. are also disclosed, and the rights to the structure that achieves the effects have also been acquired through divisional applications, amendments, etc. have the intention to For example, in this specification, a portion where it is written as "can be done" is a statement that clearly indicates the effect to be achieved, and there are parts that show an effect even if there is no mention of "can be done". Further, even without such a description, there are effects that can be understood by the configuration.

1 is a diagram showing the overall configuration of a system according to an embodiment of the present invention. FIG. 3 is a diagram showing the external configuration of the main body portion of the present embodiment. FIG. 3 is a diagram showing an example of an electrical configuration of a light receiving section according to the present embodiment. FIG. 1 is a block diagram showing the electrical configuration of an electronic device according to the present embodiment. FIG. 3 is a circuit diagram showing an example of the electrical configuration of the light receiving section of the present embodiment. FIG. 3 is a diagram illustrating another example of the external configuration of the electronic device according to the present embodiment. It is a figure which shows an example of the notification screen when the 1st notification of this embodiment is performed. It is a figure showing an example of the accelerometer of this embodiment. It is a figure showing other examples of the accelerometer of this embodiment. It is a figure showing an example of a notification screen of this embodiment. It is a figure showing an example of a notification screen of this embodiment. FIG. 3 is a diagram illustrating an example of a method for recording the traveling direction of a vehicle using the data recording function of the present embodiment. FIG. 3 is a diagram illustrating an example of a method for recording a visible light reception state of the data recording function of the present embodiment. FIG. 6 is a diagram illustrating an example of a method for recording visible light reception states and laser light reception states of the data recording function of the present embodiment. FIG. 3 is a diagram illustrating an example of a method for recording an image of a camera with a data recording function and a traveling direction of a vehicle according to the present embodiment. FIG. 4 is a diagram illustrating an example of a method for recording an image of a camera with a data recording function and a state of reception of visible light according to the present embodiment. FIG. 6 is a diagram illustrating an example of a method for recording an image of a camera with a data recording function, a visible light reception state, and a laser light reception state of the present embodiment. It is a figure which shows an example of the electrical structure of the light receiving part of a modified example of this invention.

Embodiments of the present invention will be described below with reference to the drawings. These drawings are used to explain technical features that can be adopted by the present invention. The configuration, shape, etc. of the device described are merely illustrative examples, and the present invention is not to be construed as being limited thereto. , various changes, modifications, and improvements may be made. In the following explanation, labeling using numerical values such as first, second, etc. is for identifying each element, and is not for determining the number of elements. In addition, in each figure referred to in the following explanation, the scale may be different from the actual scale in order to make each member, each region, etc. recognizable.

Further, as a term used in the following description, for example, the horizontal direction does not have to be strictly horizontal, but may be a substantially horizontal direction. The same applies to the vertical direction, perpendicular, parallel, normal, etc. Furthermore, in the following description, when physical quantities such as dimensions and wavelengths are described using specific numerical values, they do not have to be strictly those numerical values. These directions and numerical values may be changed, for example, within a range that provides similar effects. Furthermore, changes such as increasing or decreasing the size of each device and each member may be made.

[1. Configuration of electronic device 10]
FIG. 1 is a diagram illustrating an overview of an electronic device 10 according to an embodiment of the present invention. The electronic device 10 is an electronic device placed in the vehicle 40, and provides various information to the user. The user may be a driver or a passenger in the passenger seat, but in this embodiment, the driver is mainly assumed. The electronic device 10 has a radar/laser detector function and provides information that helps the driver drive safely. The electronic device 10 may be, for example, a device that is purchased by a user separately from the vehicle 40 and is retrofitted to the vehicle 40 (also referred to as an aftermarket product). The vehicle 40 is, for example, an internal combustion engine vehicle having an engine as a drive source, a hybrid vehicle having an engine and a travel motor as a drive source, an electric vehicle having a travel motor as a drive source, or the like. The vehicle 40 is preferably a four-wheeled vehicle, but is not limited to a four-wheeled vehicle, and may be, for example, a two-wheeled vehicle such as a motorcycle, a large transport vehicle with four or more wheels, or the like. Note that FIG. 1 shows a camera 70 arranged in the vehicle 40. The camera 70 is used when the electronic device 10 and the camera 70, which will be described later, cooperate to realize a predetermined function. If this cooperative function is not realized, the camera 70 may not be arranged in the vehicle 40.

The electronic device 10 has a notification function that notifies the user when the vehicle 40 has a predetermined approach relationship with a predetermined target. The predetermined approach relationship refers to a relationship in which the vehicle 40 approaches the target object by a predetermined distance or less, and furthermore, there is a target object in the traveling direction or on the course of the vehicle 40, and the target object It may also be said that the relationship is close to a predetermined distance or less. As a target object, there is a speed control point, which is a point where speed control of vehicles is carried out. Speed measurement devices may be installed at speed enforcement points. The electronic device 10 receives enforcement waves emitted from the speed measuring device. The enforcement wave is an electromagnetic wave for measuring the speed of a vehicle, and may also be referred to as a measurement wave, a speed measurement signal, or the like. Speed control points are determined by taking into consideration conditions such as vehicle driving conditions (for example, vehicles are likely to speed up), traffic accident occurrence conditions (for example, points where a large number of accidents occur), and the like. An example of a speed control point is, for example, a general road, a straight road, a curve, or a point beyond a curve on a route (road) on which a vehicle travels. There are many types of speed measuring devices, such as fixed types and mobile types. The mobile type includes, for example, a portable type and a type mounted on a vehicle.

The electronic device 10 receives at least a laser beam as a police wave emitted from the speed measuring device 30. In the example of FIG. 1, the speed measuring device 30 is installed on a sidewalk adjacent to a roadway, and measures the speed of a vehicle traveling on this roadway.

The laser light emitted by the speed measuring device 30 is pulsed light having a predetermined pulse width, and is also called a pulsed laser. The laser light emitted by the speed measuring device 30 has energy concentrated at a specific wavelength. The specific wavelength may be the wavelength at which the energy of the light emitted by the speed measuring device 30 reaches its peak. It is desirable that the laser beam has energy at a specific wavelength outside the visible light region, for example. The specific wavelength is preferably a wavelength that is not perceptible to humans; for example, it is preferable to have energy at a specific wavelength outside the visible light region. The specific wavelength belongs to the infrared light region, for example, and is 905 nm. However, the specific wavelength is not limited to this, and may be 850 nm, 950 nm, 1900 nm, or other wavelengths.

The speed measuring device 30 includes a speed measuring section 31, an imaging section 32, and a strobe 33. The speed measurement unit 31 measures the speed of the vehicle using a laser scanning method. The speed measurement unit 31 emits a laser beam into a fan-shaped measurement area (for example, measurement area T in FIG. 1) whose center angle is the angle θ while changing the direction. θ is, for example, 110 degrees. The measurement area includes a wider range upstream than the downstream range in the traveling direction of the vehicle 40 from the position where the speed measurement unit 31 is installed. The speed measurement unit 31 changes the emission direction of the laser beam counterclockwise.

When the emitted laser light reaches the vehicle 40 and is reflected, the speed measurement unit 31 receives the reflected light. The speed measuring unit 31 measures the distance to the vehicle 40 based on the time required from emitting the laser light to receiving the reflected light. The speed measurement unit 31 repeatedly measures the distance to the vehicle 40 and measures the speed of the vehicle 40 based on the distance traveled by the vehicle 40 per unit time. The speed measuring unit 31 measures, for example, the distance to a vehicle within the measurement area, and further measures the speed of the vehicle at a predetermined distance point closer to the self-device.

The imaging unit 32 images the target vehicle when predetermined imaging conditions are met. The vehicle to be imaged may be, for example, a vehicle whose speed measured by the speed measurement unit 31 exceeds the speed limit (that is, a violation vehicle). There are other imaging conditions, which will be described later. The strobe 33 emits light when the image capturing section 32 captures an image. The imaging unit 32 may take images based on light in the infrared region so that images can be taken even at night. In this case, the strobe 33 preferably emits light having energy in the infrared region. The speed measurement device 30 transmits data to be recorded in speed enforcement, such as measured speeds and captured images, to an external computer.

The electronic device 10 further has a function of receiving other enforcement waves. The electronic device 10 receives radio waves emitted from a speed measurement device that emits predetermined radio waves as enforcement waves. These radio waves are hereinafter referred to as "radar waves," and are, for example, microwaves. Further, the electronic device 10 preferably has a function of receiving a radio signal of a predetermined frequency that may propagate around a speed enforcement point as an enforcement wave. In addition, in the following description, "speed measuring device" may be read as "ORBIS" etc. as appropriate.

The electronic device 10 is roughly divided into a main body part 101 and a fixed part 102. The main body part 101 is fixed at a predetermined installation position using the fixing part 102. In this embodiment, the installation position is the top surface of the dashboard 41 of the vehicle 40. The fixing part 102 is a fixing member that is provided under the main body part 101 and fixes the main body part 101 at a predetermined installation position. The fixing part 102 is also called a bracket.

FIG. 2 is a diagram showing the external configuration of the main body section 101. FIG. 2(A) is a diagram of the main body portion 101 viewed from the diagonally upper right direction on the front side. FIG. 2(B) is a diagram of the main body 101 viewed from the diagonally upper left direction on the back side.

The main body section 101 has a housing 1011. The housing 1011 has a rectangular parallelepiped shape that is longer horizontally than vertically and has a relatively small thickness. The housing 1011 is made of, for example, resin or other material. A rectangular opening that is longer horizontally than vertically is provided on the front side of the housing 1011. The main body section 101 includes a display section 13 for displaying an image at the position of this opening, and a touch sensor 191 overlaid on the display area of the display section 13. The main body part 101 has an illuminance sensor window 201 and a light emitting part 24 on the left side of the display part 13 on the front side thereof. The light emitting section 24 has a light emitting region whose longitudinal direction is the vertical direction. A mounting section 21 serving as a medium holding section is provided on the right side of the housing 1011. The storage medium 50 is loaded into the loading section 21 through the recording medium insertion slot. The storage medium 50 is, for example, an SD card. The SD card includes any shapes such as, for example, an SD memory card, a miniSD card, and a microSD card.

A lens holder 1012 is provided on the back side of the housing 1011. The lens holder 1012 is a through hole that penetrates the inside and outside of the housing 1011 and holds the lens 121. The lens 121 is a lens for condensing light. In this embodiment, the lens 121 is a lens called an aspheric lens, which has an elliptical shape that is longer than the top and bottom and the left and right sides, and has an aspherical light incident surface. lenses may be used. A mounting portion 1013 is provided near the lower end of the back side of the casing 1011 and near the center of the casing 1011 in the left-right direction. The attachment part 1013 is a part to which the fixing part 102 is attached. The attachment portion 1013 has a pair of groove portions each extending vertically. Further provided on the back side of the housing 1011 are a power switch 221 for turning on/off the power of the electronic device 10, and a terminal section 23 for connecting an external device.

FIG. 3 is a diagram showing the external configuration of the fixing portion 102. As shown in FIG. FIG. 3(A) is a diagram of the fixing portion 102 viewed from the diagonally upper right direction on the front side. FIG. 3(B) is a diagram of the fixing portion 102 viewed from the diagonally upper left direction on the front side.

The fixing part 102 is a member that is fixed at an installation position using a fixing member 1021 and has a pedestal part 1022, a socket part 1023, a ball stud 1024, and a mounting member 1025. The pedestal portion 1022 is a portion that is fixed to an installation position (also referred to as an installation surface). The bottom surface of the pedestal portion 1022 is attached to the installation position using a fixing member 1021 such as an adhesive sheet or double-sided tape. The pedestal part 1022 has a socket part 1023 having a space opened on the front side. A ball portion of a ball stud 1024 is attached to the socket portion 1023. The socket portion 1023 and the ball stud 1024 attached to the socket portion 1023 constitute a ball joint mechanism. The ball stud 1024 changes its posture vertically and horizontally while being attached to the socket portion 1023 in response to an external force. A mounting member 1025 is provided on the front side of the ball stud 1024. The mounting member 1025 is mounted on the mounting portion 1013 of the main body portion 101. The mounting member 1025 has a pair of protrusions protruding toward the front on both left and right sides when viewed from the front. The pair of protrusions are inserted into the pair of grooves of the attachment part 1013 of the main body part 101, thereby completing the attachment of the main body part 101 to the fixing part 102. The main body part 101 can change its posture vertically and horizontally while being attached to the fixing part 102 in response to an external force. This allows the user to use the electronic device 10 with the main body 101 fixed in a desired posture.

FIG. 4 is a block diagram showing the electrical configuration of the electronic device 10. The control section 11 controls each section of the electronic device 10. The control section 11 controls each section of the electronic device 10. The control unit 11 is, for example, a computer including a processor 111 and a memory 112. The processor 111 is, for example, a CPU (Central Processing Unit), an MPU (Micro Processing Unit), a GPU (Graphics Processing Unit), or an ASIC (Application-Specific Int). has at least one of an FPGA (Field Programmable Gate Array) and an FPGA (Field Programmable Gate Array). . The memory 112 is a main storage device including, for example, RAM (Random Access Memory) and ROM (Read Only Memory). The processor 111 temporarily stores the program read from the ROM of the memory 112 or the storage unit 25 in the RAM. Additionally, the RAM of the memory 112 provides a work area for the processor 111. The processor 111 performs arithmetic processing while temporarily storing data generated during execution of a program in a RAM, thereby performing various controls.The control unit 11 further includes a clock unit 113 that measures time. The clock unit 113 is, for example, a real-time clock. The clock unit 113 may be mounted on the motherboard of the processor 111 or may be externally attached to the processor 111.

The light receiving section 12 is a light receiving section for receiving laser light as a police wave from a speed measuring device compatible with a laser method. The light receiving unit 12 receives the light incident through the lens 121 and outputs a signal corresponding to the received light to the control unit 11. The light receiving unit 12 may further include an optical member such as a filter that cuts visible light of the laser light. The signal output by the light receiving section 12 changes depending on the amount of light received by the light receiving section 12, for example. The light-receiving section 12 includes, for example, a photodiode as a light-receiving element, but may also be a phototransistor or other light-receiving element. The light receiving section 12 may include two or more light receiving elements. The light receiving section 12 is preferably sensitive to at least an infrared light region. The light receiving section 12 may further include an A/D conversion circuit or the like that converts an analog signal from the light receiving element into a digital signal.

The display unit 13 displays images. The display unit 13 is, for example, a 3.2-inch color TFT liquid crystal display. The liquid crystal display is, for example, an IPS (In Plane Switching) type. The display unit 13 may be an organic EL (Electro Luminescence) display or another type of display device.

The audio output unit 14 outputs audio. The audio output unit 14 includes, for example, an audio processing circuit and a speaker.

The radar receiving unit 15 receives radar waves as enforcement waves from a speed measuring device compatible with the radar method. Radar waves include, for example, predetermined microwaves, stealth waves that emit radio waves only at the moment measured by a predetermined stealth enforcement device, normal radar waves, new radar waves corresponding to K-band and X-band, and cancellation announcements. The radar receiving section 15 includes, for example, an antenna and a receiving circuit.

The wireless receiving section 16 receives a wireless signal of a predetermined frequency. This radio signal of a predetermined frequency may propagate around a speed enforcement point, and is an example of an enforcement wave that indicates the existence of a speed enforcement point. The radio signals of this predetermined frequency include, for example, a police radio, a car location radio, a digital radio, a small radio, a jurisdictional radio, a police telephone, a police activity radio, a tow radio, a helicopter radio, a fire helicopter radio, a fire radio, and an emergency radio. There are radio signals belonging to frequencies such as , expressway radio, police radio, etc. The radio receiving section 16 includes, for example, an antenna and a receiving circuit.

The position information acquisition unit 17 acquires position information indicating the position of the electronic device 10 (more specifically, the current position). The position of the electronic device 10 can be equated with the position of the vehicle 40 in which the electronic device 10 is placed and the position of the driver and other persons (passengers) riding in the vehicle 40. The position information acquisition unit 17 acquires position information (latitude information and longitude information) of the electronic device 10 based on, for example, a signal from a GPS (Global Positioning System), which is one of the GNSS (Global Navigation Satellite Systems). ) to obtain. The position information acquisition unit 17 may also utilize Michibiki as QZSS (Quasi-Zenith Satellite System). The location information acquisition unit 17 may acquire location information based on signals from 4G, 5G communications, and other base station devices.

The communication unit 18 communicates with an external device. The communication unit 18 wirelessly communicates with an external device using, for example, Wi-Fi (registered trademark), Bluetooth (registered trademark), other wireless LAN (Local Area Network) communication, or short-range wireless communication. The external device is, for example, a smartphone, a tablet computer, or other communication terminal in the vehicle 40. The communication unit 18 may include a communication circuit for performing communication based on mobile communication system standards such as LTE (Long Term Evolution), 4G, and 5G, for example.

The input unit 19 receives information input from the user. The input unit 19 includes a touch sensor 191 and a microphone 192. Touch sensor 191 receives input of user operations. Touch sensor 191 detects a position touched by a user. The touch sensor 191 is, for example, of a capacitive type. The microphone 192 converts the incident sound into an electrical signal. Microphone 192 is, for example, a condenser microphone. In addition to these, the input unit 19 may include physical buttons such as a volume adjustment button and a work button.

The sensor section 20 includes various sensors. The sensor unit 20 includes, for example, at least one of a geomagnetic sensor, an acceleration sensor, a gyro sensor, an atmospheric pressure sensor, a temperature sensor, a humidity sensor, and an illuminance sensor. A geomagnetic sensor is an example of an orientation sensor that detects orientation. When the electronic device 10 is attached to the vehicle 40, the display unit 13 faces the inside of the vehicle, so that the traveling direction of the vehicle 40 can also be specified based on the direction detected by the geomagnetic sensor. . The acceleration sensor is a three-axis acceleration sensor that detects, for example, longitudinal, lateral, and vertical acceleration of the vehicle. The gyro sensor is a sensor that detects the tilt of the electronic device 10. The acceleration sensor and the gyro sensor may be used, for example, to estimate the position of the vehicle 40 by autonomous navigation when signals from GNSS satellites cannot be received. The atmospheric pressure sensor measures atmospheric pressure. The atmospheric pressure sensor is used, for example, to detect differences in elevation and determine whether a highway is a highway or a general road. The temperature sensor detects temperature. The humidity sensor detects humidity. The illuminance sensor is a sensor that detects illuminance, which indicates the brightness in the vehicle interior surrounding the electronic device 10, based on light incident through the illuminance sensor window 201. The illuminance sensor is used, for example, to adjust the brightness of the display on the display unit 13.

The mounting section 21 functions as a medium holding section that holds the storage medium 50 inserted from the recording medium insertion slot. The mounting unit 21 writes data to the storage medium 50 and reads data from the storage medium 50. The mounting section 21 may be configured to hold only one storage medium 50, but may be configured to be able to hold two or more storage media 50 at the same time.

The power supply control section 22 controls the supply of power to each section of the electronic device 10 . The power supply control unit 22 includes, for example, a power switch 221 and a power supply control circuit. The power supply control section 22 supplies power supplied from the vehicle 40 side via the terminal section 23 to each section of the electronic device 10. The power supply control unit 22 may further include a secondary battery, a button battery, or an electric double layer capacitor (also called a supercapacitor) as a power storage means.

The terminal portion 23 is a terminal for electrically connecting to an external device. The terminal section 23 is a terminal for receiving power supply from an external device. The terminal section 23 has a terminal that complies with the miniUSB standard, for example. A connector at one end of a power cord (for example, a cigarette plug cord) is connected to the terminal portion 23 . The connector at the other end of the power cord is connected, for example, to a power supply terminal (for example, a cigarette lighter socket) provided on the vehicle 400 side.

An OBD II adapter connectable to the OBD II ("II" is a Roman numeral "2") connector of the vehicle 40 may be connected to the terminal portion 23. The OBD II connector is also called a failure diagnosis connector, and is a terminal that is connected to a vehicle's ECU (Engine Control Unit) and outputs various vehicle information every predetermined period (for example, every 0.5 seconds). By connecting the terminal section 23 to the OBDII connector using the OBDII adapter, the electronic device 10 can receive power for operation and acquire vehicle information.

Vehicle information is information regarding the state of vehicle 40. Vehicle information includes, for example, the speed of the vehicle 40 (vehicle speed), engine rotation speed, engine load factor, throttle degree, ignition timing, remaining fuel percentage, intake manifold pressure, intake air amount (MAF), injection opening time, engine Temperature of cooling water (cooling water temperature), temperature of air taken into the engine (intake temperature), air temperature outside the vehicle (outdoor temperature), amount of remaining fuel in the fuel tank (remaining fuel amount), fuel flow rate, instantaneous fuel efficiency, The information may be at least one of the following: accelerator opening, blinker information (operation (ON/OFF) of left and right blinkers), brake opening, steering angle of steering wheel, gear position, door opening/closing state, etc.

A camera 70 is a device connected to the terminal section 23. As the device connected to the terminal portion 23, an external battery may be used so that the electronic device 10 can operate even without power being supplied from the vehicle 40 side. The device connected to the terminal section 23 may be, for example, a device having a function of supporting safe driving of the user. Examples of such a device include a device that has a function of capturing an image of the driver (for example, the face) and detecting and notifying the driver's condition such as inattentive driving and drowsy driving, and There is a device (for example, a device used for vehicle detection for a forward vehicle collision warning system (FCWS)) that has a function of detecting and giving an alarm. The device connected to the terminal section 23 may also be an in-vehicle device such as an imaging device exemplified by a drive recorder, a car navigation device, or a display device.

The light emitting section 24 emits light in a predetermined color. The light emitting section 24 includes, for example, a light emitting diode.

The storage unit 25 stores data. The storage unit 25 stores, for example, programs for the control unit 11 to perform various controls. The control unit 11 reads a program from the storage unit 25 and executes it. The storage unit 25 further includes map data showing a map, the type of target object and its position information, data for notifying the existence of the target object (for example, sound effects, BGM, audio data such as voice messages, photographs and schematic diagrams). image data such as diagrams, etc.), data for realizing a route guidance function when the electronic device 10 has a navigation function, data for displaying a standby screen, etc. Targets include, for example, speed control points (including public enforcement information), speed measuring devices (laser type, radar type, loop coil type, H system, LH system, photocell type, mobile type, etc.), as well as drowsy driving. Accident point, speed limit switching point, enforcement area, inspection area, parking monitoring area, N system, traffic monitoring system, intersection monitoring point, signal disregard prevention system, police station, accident-prone area, vehicle-targeting area, emergency/ Continuous curves (expressways), branching/merging points (expressways), advance ETC lane guidance (expressways), service areas (expressways), parking areas (expressways), highway oasis (expressways), smart interchanges (highways) There are gas stations (expressways), tunnels (expressways), highway radio reception areas (expressways), prefectural border announcements, roadside stations, view point parking, etc.

Information regarding targets (for example, position information including longitude and latitude, target type information, etc.) is registered in the storage unit 25 when the electronic device 10 is shipped. The control unit 11 acquires information regarding a new target to be added thereafter from the attached storage medium 50 or through communication using the communication unit 18, and stores the acquired information in the storage unit 25. It's good to let them do it. In this way, it is preferable that the control unit 11 has a function of causing the storage unit 25 to store updated information regarding information regarding a new target object and the like.

Note that the storage unit 25 may be, for example, an auxiliary storage device realized using various storage media such as a flash memory (e.g., eMMC, SSD). The storage unit 25 may be realized using various storage media such as optical storage media, magnetic storage media, and semiconductor storage media.

FIG. 5 is a circuit diagram showing an example of the electrical configuration of the light receiving section 12. As shown in FIG. FIG. 5A is a diagram mainly illustrating the optical system of the configuration of the light receiving section 12. FIG. 5(B) is a diagram mainly explaining the circuit system of the configuration of the light receiving section 12. As shown in FIG.

As shown in FIG. 5A, the light receiving section 12 includes a lens 121, a filter 122, and a light receiving element 123 as an optical system. The lens 121 is a condensing lens that condenses incident light. The filter 122 is an optical filter that performs filtering processing to transmit laser light among the incident light. The filter 122 may be, for example, a band pass filter having a passband at a specific wavelength λ0 used for laser light and having a predetermined bandwidth. The filter 122 preferably has the function of a visible light cut filter that cuts visible light of the incident light, but such a visible light cut filter may be provided separately from the filter 122. For example, the lens 121 may function as a visible light cut filter.

The light receiving element 123 receives light and outputs a signal according to the received light. The light receiving element 123 preferably outputs a signal according to the amount of light that has entered the light receiving element 123. The light receiving element 123 is arranged at a position (that is, on the optical path) where the light that has passed through the lens 121 and the filter 122 is incident. In this embodiment, the light-receiving element 123 is a light-receiving element that outputs a current according to incident light as a signal (first signal), and is a photodiode here. The light receiving element 123 may be a light receiving element such as a phototransistor, for example. In this embodiment, the light receiving element 123 is a light receiving element without a lens.

Next, the circuit system of the light receiving section 12 will be explained with reference to FIG. 5(B). In FIG. 5(B), illustration of the lens 121 and filter 122 is omitted. The cathode of the light-receiving element 123 is connected to the high-potential side power supply line, and the anode of the light-receiving element 123 is connected to one end of the resistor R1. The other end of resistor R1 is grounded. The light receiving element 123 outputs a current according to the amount of incident light as a first signal. It is preferable that the output of the light receiving element 123 increases in accordance with the amount of incident light.

An integrated circuit (IC) 125 is arranged after the light receiving element 123. An input terminal of the integrated circuit 125 is commonly connected to the anode of the light receiving element 123 and one end of the resistor R1 via a capacitor C1.

The integrated circuit 125 converts and amplifies the first signal, which is the output of the light receiving section 12, into a voltage signal and outputs a second signal. The integrated circuit 125 may be an IC called a high gain amplifier IC or the like. Integrated circuit 125 may be, for example, an integrated circuit used for a specific application other than laser detection, such as for optical distance measurement. By using the integrated circuit 125 for a specific application other than such laser detection for laser detection of the electronic device 100, the sensitivity to laser light reception can be improved.

As the integrated circuit 125, it is preferable to use an integrated circuit having a transimpedance amplifier (also referred to as a transimpedance amplifier IC). The integrated circuit 125 linearly amplifies the first signal that is the output of the light receiving element 123. For example, even if the pulse width of the speed measuring laser light emitted by the speed measuring device is as narrow as 20 ns and is in a high frequency range, the integrated circuit 125 treats each extremely narrow pulse width as one pulse. It is processed. Furthermore, a sufficiently large gain can be obtained with the integrated circuit 125 having a transimpedance amplifier.

In the integrated circuit 125 configured as described above, the light receiving element 123 is placed on the high potential side on the input side. Therefore, the integrated circuit 125 outputs a negative pulse from the output terminal in response to the laser beam for speed measurement entering the light receiving element 123 and the first signal being input to the input terminal.

The output terminal of the integrated circuit 125 is connected to a common emitter amplifier circuit 126 using a transistor 1261. Amplification circuit 126 inverts and further amplifies the output signal of integrated circuit 125. As a result, the amplifier circuit 126 outputs a positive pulse. It is desirable that the amplifier circuit 126 is designed to increase the amplification factor of a signal in a specific wavelength range to which the speed measurement laser light emitted by the speed measurement device belongs. The transistor 1261 may be configured using, for example, an npn type transistor, and an appropriate type may be used depending on the input signal and the like.

The output end of the amplifier circuit 126 is connected to an emitter follower circuit 127 via a capacitor C3. The output terminal of the emitter follower circuit 127 is connected to the input terminal of a differential amplifier 124 that functions as a comparator.

A thermistor 129 is provided on the base side of the emitter follower circuit 127 as a temperature compensation circuit. Since the DC component of the signal from the input side of the emitter follower circuit 127 is cut off by the capacitor C3 and only the AC component is input, it is determined by the voltage division of the resistors R4, R5, etc. around the base side of the transistor 1271. A thermistor 129 grounded via a resistor R3 is arranged between a capacitor C3 connected to the output terminal of the amplifier circuit 126 and the base of the transistor 1271 which is the input terminal of the emitter follower circuit 127. One end of the thermistor 129 is connected to the input end of the emitter follower circuit 127, and the other end is grounded.

The differential amplifier 124 outputs a high level signal when the received signal level exceeds the threshold value, and outputs a low level signal when the received signal level is below the threshold value. The pulse width of the speed measuring laser light emitted by the speed measuring device that is received by the light receiving element 123 is as short as, for example, 20 ns, so when the laser light is received, the differential amplifier 124 outputs a A pulse with a narrow pulse width is output.

The output end of the differential amplifier 124 is connected to a waveform shaping circuit 128. The waveform shaping circuit 128 generates a pulse with a predetermined pulse width that can be processed by the control unit 11 from a narrow pulse width inputted to the input terminal in response to the reception of a laser beam for speed measurement, and outputs the pulse. be. As described above, the pulse width of the pulse output from the differential amplifier 124 in response to the reception of the speed measuring laser beam is a very narrow pulse width of, for example, 20 ns, and the pulse width of the pulse that is output from the differential amplifier 124 in response to the reception of the laser beam for speed measurement is very narrow, for example, 20 ns. , it may be difficult for the control unit 11 to process it. Therefore, it is preferable that the waveform shaping circuit 128 generates and outputs a pulse that is widened to about 50 μs, for example. The waveform shaping circuit 128 is preferably composed of, for example, an AND element and a monostable multivibrator, and configured to output pulsed light having a predetermined width defined by the time constant of the monostable multivibrator.

The output end of the waveform shaping circuit 128 is connected to the control section 11 . Based on the output from the waveform shaping circuit 128 (in other words, the output from the light receiving section 12), the control section 11 determines whether or not the speed measuring laser beam emitted by the speed measuring device has been received. When the control unit 11 determines that it has received light of 905 nm as the specific wavelength λ0, the pulse width is approximately 20 ns or approximately 15 ns, and the pulse interval is approximately 80 ms, the control unit 11 determines that the laser beam has been received. judge. "About" may be within a predetermined range that can be considered to be the same as a reference value or substantially the same as that value. Determining that the control unit 11 has received the laser beam may be read as determining that the control unit 11 determines that the speed measuring device 30 is present. For example, when the control unit 11 determines that a pulse satisfying the above-mentioned conditions has been received at least once, it is preferable to determine that the laser beam has been received. However, when it determines that this pulse has been received multiple times, the control unit 11 may determine that the laser beam has been received. It is preferable to determine that light has been received.

[2. Notification function of electronic device 10 - Part 1]
The notification function of the electronic device 10 is a function of notifying the user of information using the light receiving section 12, the radar receiving section 15, the wireless receiving section 16, the position information acquiring section 17, and the like. The notification function is a function to notify information regarding a target called a POI (Point of interest). The notification function has, for example, the function described below. The notification by the notification function may be performed using any one of display on the display section 13, output of sound from the audio output section 14, predetermined light emission from the light emitting section 24, and other methods perceptible to humans.

<2-1. Laser alarm function＞
The control unit 11 has a laser warning function. Specifically, the control unit 11 uses the light receiving unit 12 to perform alarm control to issue an alarm when it is determined that a laser beam for speed measurement has been received from a speed measurement device compatible with the laser method. Laser light corresponding to the laser method is light of a specific wavelength and is a pulsed laser having a predetermined pulse width. The specific wavelength belongs to the infrared region, for example, and is, for example, 850 nm, 905 nm, 950 nm, or 1900 nm. The pulse width is, for example, about 20 ns or about 15 ns. The pulse interval is, for example, approximately 80 ms. "About" may be within a predetermined range that can be considered to be the same as a reference value or substantially the same as that value. For example, if the control unit 11 determines that a laser beam corresponding to the laser method has been received, the control unit 11 displays a schematic diagram or a photograph of a speed measuring device corresponding to the laser method stored in the storage unit 25, “At a speed control point”. It is preferable to display a message on the display unit 13 saying, “We are approaching.” In place of or in addition to this display, the control unit 11 reads the audio data stored in the storage unit 25 and outputs an audio message “Laser light has been received. Be careful of speed” from the audio output unit 14. good.

<2-2. Radar warning function>
The control unit 11 has a radar warning function. Specifically, the control unit 11 performs alarm control to issue an alarm when it is determined that the radar reception unit 15 has received a radar wave from the speed measuring device. For example, when it is determined that a radar wave for speed measurement has been received, the control unit 11 displays a schematic diagram or a photograph of a speed measurement device corresponding to the radar method stored in the storage unit 25, and displays a message “approaching a speed control point”. It is preferable to display a message on the display unit 13 saying, “This is currently being done.” In place of or in addition to this display, the control unit 11 may read the audio data stored in the storage unit 25 and output from the audio output unit 14 the audio message "Radar. Be careful of speed."

<2-3. Wireless alarm function>
The control unit 11 has a wireless alarm function. Specifically, the control unit 11 performs alarm control to issue an alarm when it is determined that the radio reception unit 16 has received a radio signal of a predetermined frequency. The control unit 11 scans frequencies corresponding to the various wireless signals described above. When the control unit 11 determines that a radio signal has been received at the scanned frequency, the control unit 11 displays a schematic diagram or photograph indicating that a radio signal corresponding to the frequency has been received, which is stored for each radio type in the storage unit 25. It is preferable to display a message on the display unit 13 saying, ``You are approaching a speed enforcement stop.'' Instead of or in addition to this display, the control unit 11 reads the audio data stored in the storage unit 25 for each wireless type, and outputs audio indicating the wireless type from the audio output unit 14. For example, when the control unit 11 receives a police radio signal, it outputs a voice message such as "This is a police radio signal. Be careful of speed."

The control unit 11 has a position alarm function (generally called a GPS alarm). Specifically, the control unit 11 performs alarm control to issue an alarm based on the position information of the target stored in the storage unit 25 and the position information acquired by the position information acquisition unit 17. For example, the control unit 11 calculates the distance between the position information of the target object and the position information of the electronic device 10, and performs alarm control when the calculated distance reaches a predetermined approaching distance. For example, while driving on an expressway, the control unit 11 performs warning control when the target object is approaching 2 km, and also performs warning control when it is determined that the target object is 1 km, 500 m, just before, or passed. . For example, at a speed control point in a tunnel, the control unit 11 performs warning control when the target object is 2 km away from the target object while driving on an expressway, and also provides an alarm control when it is determined that the target object is 1 km or 500 m away from the target object. Take control. The control unit 11 displays an alarm screen on the display unit 13, and outputs sounds such as sound effects, BGM, and voice messages from the audio output unit 14.

In addition to speed control points, target objects that can be controlled by the position alarm function include, for example, mouse trap areas, mobile orbis areas, tracking control areas, temporary stop control areas, intersection control areas, other control areas, and seats. Belt check area, alcohol check area, mobile phone check area, other check areas, intersection monitoring point, traffic light suppression system, expressway traffic police force, N system, traffic monitoring system, police station, accident-prone area, service area, parking Area, highway oasis, highway length/continuous tunnel, highway radio reception area, roadside station, viewpoint parking, parking lot, public restroom, etc.

Note that the control unit 11 may operate only the notification function set by the user among the plurality of notification functions described above. Further, a priority may be set for each of the plurality of notification functions or for each target object to be notified, depending on the design stage of the electronic device 10 or the user's settings. In this case, the control unit 11 issues a high-priority notification preferentially, for example, makes a high-priority notification stand out more than a low-priority notification, or makes a low-priority notification and a high-priority notification more prominent. If there is a conflict with the notification, only the notification with a higher priority may be performed.

Note that the electronic device 10 is an electronic device that has a function of receiving an enforcement wave and a notification function of notifying in response to reception of an enforcement wave, but these functions may be installed in different electronic devices. Good too. In the configuration shown in FIG. 6A, which is an example of this mode, the first electronic device 103 has a function of receiving an enforcement wave and a function of outputting a signal according to the reception result to the outside. The first electronic device 103 is also called an antenna section. The second electronic device 101A has a notification function that acquires the signal output from the first electronic device 103 and, based on this signal, notifies when the first electronic device 103 has received an enforcement wave. has. The first electronic device 103 and the second electronic device 101A are connected, for example, by a wired communication path (for example, the cable 104 shown in FIG. 6(A)), but they may also be connected by a wireless communication path. . The notification may not include notification by at least one of display, sound, and light, for example. In the configuration shown in FIG. 6B, which is an example of this aspect, the electronic device 101B does not have a display section. The electronic device 101B provides notification by outputting sound from a sound emitting hole 105 provided on the front side or by causing a light emitting unit 106 to emit light. Additionally, electronic devices may be installed in locations other than on the dashboard, such as on the windshield of the vehicle (for example, near the top of the windshield), or on the rearview mirror of the vehicle or the ceiling of the vehicle interior. Good too. In the configuration shown in FIG. 6C, which is an example of this aspect, the electronic device 101B is fixed to the windshield using a mounting member 107 instead of the fixing part 102. The mounting member 107 is formed using, for example, a metal plate-like member. Further, the electronic device may be configured to be fixed at any installation position selected by the user from among a plurality of installation position candidates.

Note that, as can be seen from the above description, the light receiving section 12 and the radar receiving section 15 are each an example of a receiving section that receives electromagnetic waves from the speed measuring device. The control unit 11 controls notifications (for example, alarms) in response to reception by such a receiving unit.

[3. Notification function of electronic device 10 - Part 2]
As the notification function of the electronic device 10 of this embodiment, it is preferable to have at least one of the following notification functions instead of or in addition to the notification function described above. Note that notification by [3. Notification function of electronic device 10, Part 2] will be explained below by displaying on the display unit 13, outputting audio from the audio output unit 14, or a combination thereof. Other methods may also be used. For example, it may be performed using a predetermined light emission from the light emitting unit 24 or any other method perceptible to humans. Furthermore, the display contents and audio contents are merely examples.

<3-1. First notification function of laser alarm function>
It is preferable that the control unit 11 performs a first notification urging the vehicle 40 to decelerate as a notification to the user. In this way, the user can recognize the notification prompting the vehicle 40 to decelerate as the notification when the light receiving unit 12 receives the laser light emitted from the speed measuring device 30. The user can use this notification as motivation to drive the vehicle 40 to decelerate.

Some speed measuring devices use a measurement area (which may also be called a measurement area) for measuring the speed of a vehicle within a predetermined distance from the main body (in other words, the speed measuring device itself). Then, within this measurement area, if the speed difference between a first point that is a first distance from the main body and a second point that is a second distance from the main body exceeds a predetermined speed difference, , the vehicle is not imaged, but is imaged if the speed difference is less than or equal to a predetermined speed difference. In other words, the speed measuring device does not take an image if the acceleration exceeds a predetermined value at the first point and the second point within the measurement area, but takes an image if the acceleration is less than the predetermined value. Acceleration exceeding a predetermined value may mean that there is acceleration or deceleration (that is, acceleration/deceleration) exceeding a predetermined value, and that the absolute value of acceleration exceeds a predetermined value. However, it may also be the case that there is deceleration (that is, negative acceleration) that exceeds one of the two, particularly a predetermined value. The predetermined distance range for specifying the measurement area may be, for example, a range from 20 m to 70 m from the speed measuring device. The first distance may be, for example, 25 m. The second distance is preferably 30 m. The predetermined speed difference may be, for example, 1.5%, and the acceleration exceeding the predetermined value may be, for example, an acceleration exceeding 1.5%.

The reason why the first notification is made to prompt the vehicle 40 to decelerate is based on the inventor's knowledge that there are speed measuring devices with such characteristics. Further, the user who recognizes the notification urging the vehicle to decelerate starts driving to decelerate the vehicle, which can also contribute to safe driving for the user.

It is particularly good if the first notification to prompt deceleration is a special notification different from the conventional one. The special notification is one type of notification when the vehicle has a predetermined approach relationship with the speed measuring device, but it may be a special notification that is different from notifications that can be made in other cases. In this embodiment, the special notification includes <2-1 of [2. Notification function of electronic device 10, Part 1]. It is preferable that the notification be different from the notification explained in the section ``Laser Alarm Function''.

FIG. 7 is a diagram showing an example of a notification screen when the first notification is performed. The notification screen shown in FIG. 7 is a screen in which a window W1 is placed over a map M. The map M is displayed based on the map data stored in the storage unit 25 and the position information acquired by the position information acquisition unit 17. An icon I indicating the position of the vehicle 40 (own vehicle position) is arranged on the map M. The vehicle position is specified based on the position information acquired by the position information acquisition unit 17. Note that the icons of this embodiment may be replaced with characters, symbols, figures, or other objects.

The window W1 displays a message "Please continue decelerating." which notifies the user to decelerate the vehicle 40. Instead of or in addition to this display, the control unit 11 may output a voice saying "Please continue decelerating." from the voice output unit 14. In this way, the user can recognize the possibility that the vehicle 40 will be imaged while approaching the speed measuring device 30. The user can be motivated to drive the vehicle at a slower speed by the notification. By decelerating the vehicle in accordance with the notification, the user can make it difficult for the vehicle 40 to be imaged by the speed measuring device 30. For example, the user may consider driving the vehicle 40 so that there is a speed difference or acceleration between the first point and the second point that does not satisfy the imaging conditions.

<3-2. Conditions for executing the first notification of the laser warning function 1>
It is preferable that the control unit 11 performs a first notification urging the user to decelerate when the intensity of the laser light received by the light receiving unit 12 has improved. In this way, when the vehicle 40 approaches the speed measuring device 30 and the intensity of the laser light increases, the user can recognize the notification urging the vehicle 40 to decelerate. For example, the user can reduce the possibility that the vehicle 40 will be imaged by the speed measuring device 30 while contributing to the user's safe driving.

The control unit 11 may specify the intensity of the laser beam, for example, based on a signal outputted by the light receiving unit 12 (also referred to as a light reception signal). For example, the control unit 11 may acquire signals from the light receiving unit 12 at predetermined time intervals and sequentially specify the intensity of the laser beam. Examples of cases in which the intensity of the laser beam is improved include, for example, a state in which the laser beam is received at a first intensity, and a state in which the laser beam is received at a second intensity higher than the first intensity. It is better to say that the situation changes to . Alternatively or in addition to this, the case where the intensity of the laser beam has improved may be said to be the case where the state changes from not receiving the laser beam to receiving the laser beam. For example, the control unit 11 may perform the first notification during part or all of the period during which the intensity of the identified laser beam is increasing.

The intensity of the laser light received by the light receiving unit 12 is improved when the vehicle 40 has a predetermined approach relationship with the speed measuring device 30, especially when the vehicle 40 approaches the speed measuring device 30. , this is a case where the intensity of the laser beam is improved. Typically, when the vehicle 40 is traveling in front of the speed measuring device 30, the closer the vehicle 40 is to the speed measuring device 30 and the shorter the distance between the vehicle 40 and the speed measuring device 30, the less light is received. The intensity of the laser beam received by the section 12 is improved. On the other hand, when the vehicle 40 passes the position of the speed measuring device 30, the intensity of the laser beam decreases as the vehicle 40 moves away from the speed measuring device 30, or as the vehicle 40 leaves the measurement area of the speed measuring device 30, the intensity of the laser beam decreases. Laser light from the speed measuring device 30 is no longer received. For example, the control unit 11 may perform the first notification during a period in which the intensity of the specified laser beam is increasing, and may stop the first notification after that period.

<3-3. Execution conditions 2 for the first notification of the laser warning function>
If the acceleration of the vehicle 40 is below a predetermined value when the intensity of the laser light is increasing, the control unit 11 may issue a first notification urging the user to decelerate. In this way, the user can recognize the notification urging the vehicle 40 to decelerate if the acceleration of the vehicle 40 when the laser beam is being received is less than or equal to a predetermined value. For example, when the user receives this notification, the user recognizes that there is a high possibility that the image will be captured by the speed measuring device 30 if the user continues to drive as is, and is motivated to drive with more consideration given to the speed of the vehicle 40. It can be done. The predetermined value may be determined based on the conditions regarding the acceleration imaged by the speed measuring device 30, and may be set to an acceleration of 1.5%, for example. Alternatively, this predetermined value may be an acceleration smaller than this speed difference.

Note that the control unit 11 may determine the acceleration of the vehicle 40 based on the GNSS sensor of the position information acquisition unit 17 or the acceleration sensor of the sensor unit 20. The control unit 11 may determine the acceleration of the vehicle 40 based on the vehicle information acquired from the terminal unit 23.

<3-4. Conditions for executing the first notification of the laser warning function 3>
It is preferable that the control unit 11 performs a first notification urging the user to decelerate when the speed difference of the vehicle 40 when the intensity of the laser light is increasing is less than or equal to a predetermined value. In this way, the user can recognize the notification urging the vehicle 40 to decelerate if the speed difference of the vehicle 40 when the laser beam is being received is less than or equal to a predetermined value. For example, when the user receives this notification, the user recognizes that there is a high possibility that the image will be captured by the speed measuring device 30 if the user continues to drive as is, and is motivated to drive with more consideration given to the speed of the vehicle 40. It can be done. The predetermined value may be determined based on the conditions regarding the speed difference imaged by the speed measurement device 30, and may be set to a speed difference of 1.5%, for example. Alternatively, this predetermined value may be an acceleration smaller than this speed difference. Note that the control unit 11 may calculate the speed difference by determining the speeds between a certain point and a point where the vehicle has traveled a predetermined distance or a predetermined time from that point.

Note that the control unit 11 may determine the acceleration of the vehicle 40 based on the GNSS sensor of the position information acquisition unit 17 or the speed sensor of the sensor unit 20. The control unit 11 may determine the speed of the vehicle 40 based on the vehicle information acquired from the terminal unit 23.

<3-5. Accelerometer display function>
The control unit 11 may perform control to display an accelerometer indicating the acceleration of the vehicle 40 when issuing the first notification urging the user to decelerate. In this way, when a user is notified of a request to decelerate, the user can see the acceleration of the vehicle displayed on the accelerometer and drive the vehicle to decelerate. For example, the user can refer to the accelerometer and drive at a reduced speed so that the vehicle 40 is less likely to be imaged by the speed measuring device 30.

The accelerometer may be an accelerometer that displays the current acceleration of the vehicle 40. The accelerometer may be an accelerometer that displays past acceleration of the vehicle, for example, an acceleration history. The accelerometer may display a line that changes the slope of the line depending on the magnitude of the acceleration of the vehicle 40, for example.

FIG. 8 is a diagram showing an example of such an accelerometer. As shown in FIG. 8, the control unit 11 displays a graph with the horizontal axis as the time axis and the vertical axis as the speed, and displays an accelerometer 60 displaying the current acceleration of the vehicle 40 overlaid on this graph. control. In the accelerometer 60, a speed graph 61 indicating the speed of the vehicle 40 is displayed using a bar graph (bar). The speed graph 61 is a graph showing a history of speeds from the present moment to a point in time a predetermined period of time in the past. The control unit 11 causes an acceleration graph 62 indicating the acceleration of the vehicle 40 to be displayed superimposed on the speed graph 61. The acceleration graph 62 is a graph that displays the positive/negative acceleration and the magnitude (absolute value) of the acceleration by the slope of a straight line. For example, the control unit 11 displays, as the acceleration graph 62, a straight line graph whose slope corresponds to the latest acceleration determined. It is preferable that the acceleration graph 62 touch the right end point (that is, the latest speed) of the velocity graph 61. In this way, the user can understand that, for example, if the acceleration graph 62 is horizontal, the current acceleration is zero, if it goes upward to the right, it is currently accelerating, and if it is downward to the right, it is currently decelerating. It can be visually understood that the larger the acceleration, the greater the acceleration. The control unit 11 may display the measured acceleration value on the accelerometer 60. For example, the control unit 11 may display the numerical value of acceleration in association with the acceleration graph 62, for example, at the right end position of the acceleration graph 62.

The control unit 11 may further change the display mode of the acceleration graph 62 depending on acceleration and deceleration, or whether or not the acceleration is within a predetermined acceleration range. The display mode of the acceleration graph 62 may be, for example, at least one of the color of the straight line, the thickness of the straight line, and the type of the line. In particular, the control unit 11 may change the display mode of the acceleration graph 62 depending on whether the acceleration of the vehicle 40 exceeds a predetermined value. In this way, it becomes easier for the user to visually recognize the possibility of being imaged by the speed measuring device 30.

FIG. 9 is a diagram showing another example of an accelerometer. The accelerometer 65 is represented by an analog needle type accelerometer. The accelerometer 65 is a round meter, and an acceleration needle 66 indicating the current acceleration is displayed within the circular area. When the acceleration is zero, the acceleration hand 66 points in the vertical direction, more specifically, at the 12 o'clock position. The acceleration hand 66 swings clockwise (to the right) during acceleration, and the larger the swing, the greater the positive acceleration, that is, the faster the acceleration. On the contrary, the acceleration needle 66 swings counterclockwise (to the left) during deceleration, and the larger the swing width, the larger the negative acceleration, which means that the vehicle is decelerating rapidly.

The circular area of the accelerometer 65 is divided into a first area 67A, a second area 67B, and a third area 67C. The first region 67A is a region indicating that the negative acceleration is a predetermined value, that is, a sudden deceleration. In this embodiment, the first region 67A is a region indicating that the imaging conditions of the speed measuring device 30 are deviated from due to sudden deceleration. The second region 67B is a region indicating that the acceleration is within a predetermined range of values on both the positive and negative sides centered on zero, that is, it is a region indicating neither sudden deceleration nor sudden acceleration. In this embodiment, the second area 67B is an area indicating that the imaging conditions of the speed measuring device 30 are met. The third region 67C is a region indicating that the positive acceleration is a predetermined value, that is, sudden acceleration. In this embodiment, the third region 67C is a region indicating that the imaging conditions of the speed measuring device 30 are deviated from due to sudden acceleration.

When the first area 67A and the second area 67B and the second area 67B and the third area 67C have different display modes, it is difficult for the user to see the current acceleration of the vehicle 40 captured by the speed measuring device 30. It becomes easier to recognize what is possible. The display mode may be, for example, at least one of the colors and patterns of each area (background). Instead of or in addition to this, the control unit 11 determines whether the acceleration exceeds a predetermined value, that is, whether the acceleration needle 66 is in one of the first region 67A and the third region 67C, or whether the acceleration needle 66 is in the second region 67A or the third region 67C. The display mode of the acceleration needle 66 may be changed depending on whether it is in the region 67B. In this way, it becomes easier for the user to visually recognize the possibility of being imaged by the speed measuring device 30.

The control unit 11 may display the accelerometer 60 superimposed on the notification screen described in FIG. 7, as shown in FIG. 10(A). Alternatively, the control unit 11 may display the accelerometer 65 superimposed on the notification screen described in FIG. 7, as shown in FIG. 10(B). If the control unit 11 always displays the accelerometers 60 and 65 superimposed on the map M, and displays the window W1 at the time of notification, the user can drive while always paying attention to the acceleration. The control unit 11 may start displaying the window W1 and the accelerometers 60 and 65 when starting the first notification. In this way, it is easy to attract the user's attention to the acceleration at the time of notification, and it can be expected that the user will drive with more consideration given to the acceleration.

Further, when displaying the accelerometers 60 and 65, the control unit 11 preferably performs control to output a sound with a pitch corresponding to the magnitude of the acceleration. The type of sound is not particularly limited, but it may be a melody, an alarm sound, etc., for example. For example, when displaying the accelerometer 60, the control unit 11 may output a sound whose pitch corresponds to the magnitude of the slope of the line from the zero position based on the state of acceleration. Alternatively, for example, when displaying the accelerometer 65, the control unit 11 may output a sound with a pitch corresponding to the position pointed by the acceleration needle 66. This makes it easier for the user to intuitively recognize the current acceleration from the pitch of the sound. In this case, the control unit 11 may output a sound with a higher pitch as the acceleration increases in the positive direction, and output a sound with a lower pitch as the acceleration increases in the negative direction, for example. This is because it becomes easier for the user to recall acceleration from the pitch of the sound. Furthermore, the control unit 11 may notify when the magnitude of acceleration is a magnitude corresponding to sudden acceleration or sudden deceleration.

<3-6. 2nd notification function of laser alarm function>
(3-6-1) Operation example 1
It is preferable that the control unit 11 performs a second notification to prompt a change in the acceleration of the vehicle 40 when the acceleration of the vehicle 40 is not changing. In this way, when the acceleration of the vehicle 40 is not changing, the user can use the second notification as motivation to drive to cause a change in the acceleration of the vehicle 40. The second notification may be a notification urging deceleration like the first notification, but may be another notification urging a change in acceleration. Such notification may be, for example, notification at a higher level.

(3-6-2) Operation example 2
The control unit 11 controls the acceleration of the vehicle 40 when the speed of the vehicle 40 exceeds (that is, exceeds) the speed limit or is likely to exceed the speed limit and the acceleration of the vehicle 40 is unchanged. A second notification may be made to encourage change. In this way, the user can send the second notification to the vehicle 40 when the speed of the vehicle 40 exceeds or may exceed the speed limit and the acceleration of the vehicle 40 is not changing. This can be used as a motivation for driving that causes a change in acceleration. The second notification may be a notification urging deceleration like the first notification, but may be another notification urging a change in acceleration. This notification may be a higher-level warning because the speed of the vehicle 40 exceeds or may exceed the speed limit.

When determining whether the speed of the vehicle 40 exceeds the speed limit, the control unit 11 acquires information on the speed limit of the route on which it is traveling from the storage unit 25 and compares it with the current speed. You may judge. When determining whether there is a possibility that the speed of the vehicle 40 exceeds the speed limit, the control unit 11 determines that there is a possibility that the speed of the vehicle 40 exceeds a predetermined speed, for example. Good too. For example, when the vehicle is traveling on a general road and the speed limit is exceeded, the control unit 11 may determine that the speed limit may be exceeded.

Note that the second notification may be performed, for example, by displaying a screen having the same layout as the notification screen described in FIG. 7, and, for example, the message in the window W1 may be a message corresponding to the second notification. The fact that the acceleration of the vehicle 40 has not changed can be considered as not only when the acceleration of the vehicle 40 is zero, but also when the acceleration of the vehicle 40 is a value close to zero, which means that the acceleration of the vehicle 40 has not changed substantially. It is especially good to include cases.

<3-7. 3rd notification function of laser alarm function>
When the control unit 11 determines that the vehicle has passed the position of the speed measuring device 30, it notifies the user that the vehicle may have exceeded the speed, and also provides information on whether or not the vehicle has passed while the vehicle 40 is decelerating. It is recommended to make 3 notifications. In this way, when the user passes the position of the speed measuring device 30, the user can grasp the possibility that the vehicle was overspeeding and the information as to whether the vehicle passed while the vehicle was decelerating. For example, the user can understand the possibility that the vehicle will be imaged by the speed measuring device 30 after passing the location of the speed measuring device 30. The third notification may be performed, for example, by displaying a screen having the same layout as the notification screen described in FIG. 7, and for example, the message in the window W1 may be a message corresponding to the third notification.

The third notification indicates that the vehicle may have been speeding, for example, ``You were speeding.'', ``You may have been speeding.'', or ``The vehicle passed without exceeding speed.'' '', a voice message, or a combination of these messages. Information on whether or not the vehicle passed while decelerating may be displayed using a display such as "Passed while decelerating," "Passed without sufficient deceleration," or "Passed while accelerating," or a combination of these. It is good to use it as a message. In this way, when the user determines that the vehicle has passed the position of the speed measurement device 30, the user can grasp the possibility that the vehicle was overspeeding and whether or not the vehicle passed while decelerating. It is possible to grasp the possibility that the vehicle was imaged by the measuring device 30.

As the vehicle 40 moves away from the speed measuring device 30, the intensity of the laser light becomes smaller, or when the vehicle 40 leaves the measurement area of the speed measuring device 30, the laser light from the speed measuring device 30 is no longer received. It is preferable that the control unit 11 determines whether it is determined that the laser beam has passed the position of the speed measuring device 30 based on the reception state of the laser beam. Alternatively, if there is position information of the speed measuring device stored in the storage unit 25, the control unit 11 may make the determination based on the position information. Regarding the possibility that he was speeding, see <3-6. It is preferable to use the method described in "(3-6-2) Operation example 2" in "Second Notification Function of Laser Warning Function". The control unit 11 may determine whether the vehicle 40 has decelerated based on whether the acceleration of the vehicle 40 is a negative acceleration and is larger than a predetermined value.

<3-8. 4th notification function of laser alarm function>
The control unit 11 measures the speed of the vehicle 400 using the speed measuring device 30 based on the time when the light receiving unit 12 stops receiving the laser beam and the history of the speed of the vehicle 40 when the laser beam is being received. It is preferable to perform a fourth notification that provides information on the traveling speed at the location where the vehicle is being measured (which may also be referred to as a "measurement area"). In this way, the user can grasp information about the traveling speed at the point where the speed of the vehicle 40 is measured by the speed measuring device 30. For example, the user can grasp the possibility that the vehicle 40 was imaged by the speed measuring device 30 after passing the position of the speed measuring device 30. The fourth notification may be performed, for example, by displaying a screen having the same layout as the notification screen described in FIG. 7, and for example, the message in the window W1 may be a message corresponding to the fourth notification.

The point in time when the light receiving section 12 stops receiving the laser light can be referred to as the point in time when the light receiving section 12 stops receiving the laser light from the state where it was receiving the laser light, and the vehicle 40 passes through the measurement area of the speed measuring device 30. It may be said in other words as the point in time. The control unit 11 may display the history of the speed of the vehicle 40 when receiving the laser beam in a manner similar to the speed graph described in FIG. 8, for example, or in another manner. Good too. Regarding the notification of the speed history, a representative speed among the speeds of the vehicle 40 when receiving the laser light may be notified, for example, the maximum speed may be notified. The notification may be made by display, voice, or a combination thereof.

<3-9. 5th notification function of laser alarm function>
The control unit 11 measures the speed of the vehicle 40 using the speed measuring device 30 based on the time when the light receiving unit 12 stops receiving the laser beam and the history of the speed of the vehicle 40 when the laser beam is being received. It is preferable to perform a fifth notification that provides information on the acceleration and deceleration of the vehicle 40 within the area where the vehicle 40 is moving. In this way, the user can grasp information on acceleration and deceleration of the vehicle 40 within the area where the speed of the vehicle is measured by the speed measuring device 30, and can grasp the possibility that the vehicle will be imaged by the speed measuring device 30. be able to. It is preferable that the control unit 11 calculates acceleration based on temporal changes in speed, and reports information on acceleration and deceleration within the measurement area. Regarding the information on acceleration/deceleration, the control unit 11 may notify temporal changes in acceleration/deceleration, or may notify whether there is acceleration/deceleration that satisfies the imaging conditions. The fifth notification may be performed, for example, by displaying a screen having the same layout as the notification screen described in FIG. 7, and for example, the message in the window W1 may be a message corresponding to the fifth notification.

[4. Processing function according to the situation of parallel vehicles]
It is preferable that the control unit 11 performs processing according to the situation of the parallel vehicle at a position closer to the speed measuring device 30. In this way, processing can be performed at a position closer to the speed measuring device 30 in accordance with the situation of the parallel vehicle. For example, some speed measurement devices do not capture images when a parallel vehicle approaches a predetermined distance from the vehicle (for example, when the parallel vehicle approaches within 1 meter of the violating vehicle). In such a case, processing can be performed depending on the possibility that the vehicle will be measured by the speed measuring device. If the position in front of the speed measuring device 30 is a position where the light receiving unit 12 is receiving the laser beam from the speed measuring device 30, the situation of the vehicle traveling alongside the speed measuring device 30 will be Processing can be performed accordingly.

In this embodiment, it is assumed that a camera 70 (see FIG. 1) is disposed in the vehicle 40. The camera 70 may be, for example, a drive recorder, but it may also be another camera placed at a position and in the imaging direction where it can image a vehicle running alongside the vehicle 40. The position where a vehicle running alongside the vehicle 40 can be imaged may be in front of the vehicle 40, but it may also be located in a position biased to either the left or right or both. The imaging direction of the camera 70 may be a forward range including diagonally forward, or may be an imaging range of either the left or right side or both sides. Furthermore, the control unit 11 may detect the presence of a parallel vehicle through image recognition that recognizes an image captured by the camera 70. The image recognition method is not particularly limited, but for example, a method using a trained model generated by deep learning technology is preferable. Examples of the trained model include a deep neural network (hereinafter referred to as DNN), but it may also be a CNN (Convolutional Neural Network) or other learning models. Note that a method using a sensor using an infrared laser beam or other sensors or devices may be adopted as a method for detecting a vehicle running alongside.

<4-1. Notification processing according to the situation of parallel vehicles＞
The process depending on the situation of the vehicle running alongside may be a process that notifies the user. In this way, the user can recognize the notification according to the situation of the vehicle running alongside the vehicle 40, and drive in accordance with this notification. The notification may be based on the possibility that the vehicle 40 will be measured by the speed measuring device 30 to the user. The control unit 11 preferably detects the presence of a parallel vehicle at a position in front of the speed measuring device 30, in other words, the degree of overlap between the vehicle 40 and the parallel vehicle using image recognition by the camera 70, and notifies the situation of the parallel vehicle. . For example, the control unit 11 displays the notification screen shown in FIG. 11(A), and displays the message "There was a parallel vehicle at the Orbis measurement point" in the window W2 superimposed on the map M. good. Alternatively, the control unit 11 may output audio or a combination of display and audio.

The control unit 11 detects the presence of a parallel vehicle at a position in front of the speed measuring device 30, in other words, the degree of overlap between the vehicle 40 and the parallel vehicle using image recognition by the camera 70, and urges the vehicle to run parallel to another vehicle. You may also make a notification to that effect. In this way, the user can recognize the notification that encourages driving alongside other vehicles, and can be motivated to drive alongside other vehicles. The degree of overlap is an index indicating whether the vehicle 40 and the parallel vehicle overlap in a certain extent in the direction perpendicular to the direction of travel of the vehicle, and for example, with respect to the length of the vehicle 40 in the longitudinal direction. It would be good to indicate what percentage of the parts overlap. As described above, if there is a speed measuring device that does not take an image when a parallel vehicle approaches the vehicle 40 at a predetermined distance, it is possible to make the vehicle less likely to be imaged by that speed measuring device. Therefore, the control unit 11 displays the notification screen shown in FIG. 11(B), for example, and displays a message in the window W3 superimposed on the map M saying, "Please position the vehicle so that it overlaps with the vehicle in the adjacent lane." It is recommended to display . Alternatively, the control unit 11 may output audio or a combination of display and audio. The user should recognize this message and drive alongside other vehicles.

<4-2. Recording processing according to the situation of parallel vehicles＞
The process according to the situation of the parallel vehicle may be a process in which the control unit 11 acquires an image captured by the camera 70 and records the acquired image in the storage medium 50. In this way, the user can later check the image captured by the camera 70, which is recorded according to the situation of the vehicle running alongside the vehicle 40. For example, if the position in front of the speed measuring device 30 is a position where the light receiving unit 12 is receiving the laser beam from the speed measuring device 30, the user can The situation of the vehicle traveling alongside can be confirmed using the image captured by the camera 70. For example, the control unit 11 may record images from the time when the overlap with the parallel vehicle is detected until after a predetermined period of time has elapsed. Although the predetermined time may be determined in advance, it may be set until the time when the object passes through the measurement area. Further, the control unit 11 may store images from the camera 70 in the RAM and record images including a period of a predetermined length of time before the time when the overlap with the parallel vehicle is detected.

[5. Data recording function]
The control unit 11 preferably has a data recording function of recording data on the storage medium 50 when notification is being performed in response to the reception of laser light. In particular, in this embodiment, the effects of sunlight on the light receiving section 12 are taken into consideration, and the processing described below is performed. More specifically, in consideration of the problem that the light receiving signal of the light receiving section 12 becomes saturated when the sun is at a low position as the influence of sunlight on the light receiving section 12, the following processing is performed.

<5-1. Record of traveling direction of vehicle 40>
It is preferable that the control unit 11 records the traveling direction of the vehicle 40 in the storage medium 50 when the notification according to the reception of the laser beam by the light receiving unit 12 is being performed. For example, as shown in FIG. 12, the control unit 11 may record the traveling direction of the vehicle 40 in association with the time. Although the time is an absolute time (24-hour notation) in this embodiment, it may be a relative time from the recording start point. Further, although the control unit 11 records the traveling direction of the vehicle 40 every second in this embodiment, it may be recorded at other time intervals. The traveling direction of the vehicle 40 may be recorded, for example, in four types of directions: north, south, east, and west, but it is better to record in more detailed directions such as northeast, southeast, and north-northeast. The control unit 11 may specify the traveling direction using, for example, the geomagnetic sensor of the sensor unit 20, or may specify it based on vehicle information.

If this is done, the light reception signal may become saturated if the sun is at a low position, but the user can check the vehicle's heading information later to help understand the effect. Can be done. It is particularly preferable that the direction of travel is recorded together with the time. The sun is generally positioned to the east in the morning, to the south around noon, and to the west in the afternoon. Further, the direction in which the light receiving section 12 can receive light generally corresponds to the traveling direction of the vehicle 40. Therefore, recording the traveling direction of the vehicle 40 is substantially the same as the direction in which the light receiving unit 12 can receive light. Then, by referring to the time when the traveling direction of the vehicle 40 was recorded, it is possible to grasp to what extent the light receiving section 12 has been influenced by the sun. The control unit 11 may further record information for understanding the current position, weather, and other influences in order to understand the actual influence of the sun.

<5-2. Recording of visible light reception state of light receiving unit 12>
It is preferable that the control unit 11 records the visible light reception state of the light receiving unit 12 in the storage medium 50 when the notification according to the reception of laser light by the light receiving unit 12 is being performed. If this is done, the light reception signal may become saturated if the sun is at a low position, but the user can check the visible light reception status later, which can be used as a reference to understand the effect. can. The visible light reception state may indicate the state of visible light reception, and may indicate, for example, the received light intensity, the amount of received light, the energy distribution, and the quality of the received light. This is because when being affected by sunlight, the amount of visible light received increases. Then, by referring to the time when the visible light reception state was recorded, it is possible to grasp to what extent the light receiving section 12 has been influenced by the sun. The wavelength range of visible light is preferably, for example, 400 to 700 nm, but is not limited thereto. For example, as shown in FIG. 13, the control unit 11 may record the visible light reception state in association with time. Although the time is an absolute time (24-hour notation) in this embodiment, it may be a relative time from the recording start point. Moreover, although the control unit 11 records the light reception state of visible light every second in this embodiment, it may be recorded at other time intervals. The visible light reception state may be recorded in two types, strong and weak, for example, but it may also be recorded using levels divided into multiple stages, for example, levels 1, 2, 3, 4, and 5. .

It is preferable that the control unit 11 records the visible light reception state of the light receiving unit 12 while the notification corresponding to the laser light reception by the light receiving unit 12 is being performed, and also records the laser light reception state. The laser light reception state may indicate the state of laser light reception, for example, the light reception intensity, the amount of light reception, energy distribution, and the quality of light reception.
By referring to the reception state of visible light and laser light, it is possible to grasp how much visible light including sunlight was received by the light receiving unit 12 when laser light was received. The wavelength of the laser light may be, for example, the above-mentioned 905 nm. For example, as shown in FIG. 14, the control unit 11 may record the visible light reception state and the laser light reception state in association with time. Although the time is an absolute time (24-hour notation) in this embodiment, it may be a relative time from the recording start point. Further, although the control unit 11 records the visible light reception state and the laser light reception state every second in this embodiment, it may be recorded at other time intervals. The reception state of the laser beam may be recorded in two types, strong and weak, for example, but it may also be recorded using levels divided into a plurality of levels, for example, levels 1, 2, 3, 4, and 5. . Furthermore, the light receiving state of visible light may be recorded using levels divided into multiple levels such as levels 1, 2, 3, 4, and 5, and the light receiving state of laser light may be recorded in two types, strong and weak. The number of stages may be different from each other. Note that the light receiving section 12 may be configured to receive both visible light and laser light, but the light receiving section that receives visible light and the light receiving section that receives laser light may be provided separately.

<5-3. Recording camera images>
The control unit 11 performs <5-1. It is preferable to record the traveling direction of the vehicle 40 as described in the above section ``Recording the Traveling Direction of the Vehicle 40'' and also record the image (image data) captured by the camera 70 on the storage medium 50. For example, the control unit 11 may record the time and the traveling direction of the vehicle 40 in association with the image captured by the camera 70, as shown in FIG. 15(A). Alternatively, the control unit 11 may perform <5-2. Recording the light reception state of visible light of the light receiving unit 12> It is preferable to record the light reception state as described in ``Recording the visible light reception state of the light receiving section 12'' and also record the image (image data) captured by the camera 70. For example, as shown in FIG. 16(A), the control unit 11 may record the time and the visible light reception state in association with the image captured by the camera 70. For example, as shown in FIG. 17A, the control unit 11 may record the time, the visible light reception state, and the laser light reception state in association with the image captured by the camera 70. In this way, the situation around the vehicle 40 can be understood from the image captured by the camera 70, and the influence of the sun on the light receiving section 12 can be understood in more detail.

In particular, the control unit 11 records the image captured by the camera 70, the traveling direction of the vehicle 40, the visible light receiving state, and the laser light receiving state in a data format that can be reproduced by the viewer for the camera 70. It's good to do. In this way, the data format allows confirmation of the image captured by the camera 70 and information that can be used as a reference to determine to what extent the light receiving state of the light receiving unit 12 was influenced by the sun when the image was captured. You can record data. The viewer for the camera 70 may be a viewer for a drive recorder. The viewer is software that has a function of reproducing images from the camera 70, and may be, for example, a viewer for reproducing images on the camera 70 or a viewer for reproducing images on a personal computer. The viewer described above is an example of a program for causing a computer to implement the functions described below. The viewer may be stored, for example, in the storage medium 50, the storage medium used by the camera 70 to record data, or provided by a server or other device over a network. .

The control unit 11 records the image captured by the camera 70 and the traveling direction of the vehicle 40 or the visible light receiving state in a data format that enables reproduction of the image and the visible light receiving state at the same time. good. This viewer preferably has a function of reproducing (displaying) the traveling direction or the light receiving state in synchronization with the image. In other words, the viewer reproduces the image, the traveling direction, or the light receiving state of the camera 70 recorded at the same time. It would be good to have a function to do so.

FIG. 15(B) is a diagram showing an example of a screen of a viewer having a function of reproducing an image captured by the camera 70 and the traveling direction of the vehicle 40. The viewer screen shown in FIG. 15(B) shows a state where an image at time "12:05:00" is displayed when the recording shown in FIG. 15(A) is performed. The viewer screen shown in FIG. 15(B) displays an image IMG1 captured by the camera 70 as well as a display area DT in which the traveling direction of the vehicle is written as "south".

FIG. 16(B) is a diagram illustrating an example of a screen of a viewer having a function of reproducing an image captured by the camera 70 and a visible light reception state. The viewer screen shown in FIG. 16(B) shows a state where an image at time "12:05:00" is displayed when the recording shown in FIG. 16(A) is performed. On the screen of the viewer shown in FIG. 16(B), a display area LT1 in which the visible light reception state "Level: Strong" is written is displayed together with an image IMG2 captured by the camera 70.

FIG. 17B is a diagram showing an example of a screen of a viewer having a function of reproducing an image captured by the camera 70, a visible light reception state, and a laser light reception state. The viewer screen shown in FIG. 17(B) shows a state in which an image at time "12:05:00" is displayed when the recording shown in FIG. 17(A) is performed. On the viewer screen shown in FIG. 17(B), together with the image IMG3 captured by the camera 70, a display area LT1 in which the visible light reception state "Level: Strong" is written, and the laser light reception state "Level: Strong" are displayed. A display area LT2 labeled "Strong" is displayed.

[6. others]
[3. Notification function of electronic device 10 - Part 2] - [5. [Data Recording Function] explained the case where the electromagnetic wave is a laser beam. [3. Notification function of electronic device 10 - Part 2], and [4. [Processing function according to the situation of vehicles traveling alongside] can also be implemented with a configuration in which the electromagnetic waves are radar waves. The configuration and operation in this case can be explained by replacing "light receiving section 12" and "laser light" with "radar receiving section 15" and "radar wave." Moreover, the electromagnetic waves can also be implemented as radio signals, as appropriate. Regarding the configuration and operation in this case, "light receiving section 12" and "laser light" may be replaced with "wireless receiving section 16" and "wireless signal." [5. Although the data recording function takes into consideration the influence on the sunlight reception state, this does not preclude similar processing from being performed using electromagnetic waves as radar waves or radio signals.

[7. Modified example]
The present invention is not limited to the embodiments described above, and can be modified as appropriate without departing from the spirit.

FIG. 18 is a diagram showing another example of the electrical configuration of the light receiving section 12. The light receiving section 12 includes a lens 121, a filter 122, a light receiving element 123, amplifiers AMP1 to AMPN (N is a natural number), and a differential amplifier 124. The configurations of the lens 121, filter 122, and light receiving element 123 are as described above. The cathode of the light-receiving element 123 is connected to the high-potential side power supply line, and the anode of the light-receiving element 123 is connected to one end of the resistor R. The other end of the resistor R is grounded. The input end of the amplifier AMP1 is commonly connected to the anode of the light receiving element 123 and one end of the resistor R. A plurality of amplifiers AMP2, . . . AMPN are connected in series after the amplifier AMP1. The value of N is arbitrary. However, it is desirable that the amplifiers AMP1 to AMPN be designed to amplify signals in a wavelength range including the specific wavelength λ0. The output terminal of AMPN is connected to one input terminal (here, the positive input terminal) of the differential amplifier 124, and the signal SIGN is input to this input terminal. The threshold level Thn is input to the other input terminal (here, the negative input terminal) of the differential amplifier 124. The differential amplifier 124 functions as a comparator that outputs a signal according to the difference between the signal SIGN and the threshold level Thn. The differential amplifier 124 outputs a signal with a positive potential when the signal SIGN is above the threshold level Thn, and outputs a signal with a negative potential when the signal SIGN is below the threshold level Thn. The control unit 11 determines whether or not the speed measurement laser light is received based on the output from the differential amplifier 124, in other words, the difference between the signal SIGN and the threshold level Thn. The method for this determination may be as described above.

Note that the scope of the present invention is not limited to the configuration explicitly described in the specification, but also includes combinations of various aspects of the invention disclosed in this specification. Of the present invention, the structure for which a patent is sought has been specified in the attached claims, but at present, even if the structure is not specified in the claims, it is not disclosed in this specification. We intend to include such configurations in the scope of claims in the future.

The present invention is not limited to the configuration described in the embodiments described above. The components of each of the embodiments and modifications described above may be arbitrarily selected and combined. Also, any component of each embodiment or modification, any component described in the means for solving the invention, or a component that embodies any component described in the means for solving the invention. It may be configured in any combination. The applicant intends to acquire rights to these matters through amendments to the application or divisional applications. Even if there is a description of ``in the case of'' or ``in the case of'', the description is not intended to be limited to that case or at that time. We have also disclosed these cases and other configurations, and we intend to acquire the rights. Furthermore, the sections described in order are not limited to this order. It also discloses a configuration in which some parts have been deleted or the order has been changed, and we have the intention to acquire the rights.

In addition, the applicant intends to acquire rights to the entire design or partial design by converting the application to a design registration application. Although the drawing depicts the entire device using solid lines, the drawing includes not only the overall design but also the partial design claimed for some parts of the device. For example, it is a drawing that not only includes some members of the device as a partial design, but also includes some parts of the device as a partial design regardless of the members. The part of the device may be a part of the device or a part of the device. We intend to obtain rights not only for the entire design, but also for partial designs in which any part of the solid line part of the drawing is a broken line part. In addition, the modules, members, parts, images, etc. inside the device casing that are shown in the drawings are subject to independent transactions, and similarly, the design registration application must be filed. The company intends to obtain rights by making changes to the above.

10: Electronic equipment 11: Control section 12: Light receiving section 13: Display section 14: Audio output section 15: Radar receiving section 16: Wireless receiving section 17: Position information acquisition section 18: Communication section 19: Input section 20: Sensor section 21 : Mounting part 22 : Power control part 23 : Terminal part 24 : Light emitting part 25 : Storage part 30 : Speed measuring device 31 : Speed measuring part 32 : Imaging part 33 : Strobe 40 : Vehicle 41 : Dashboard 50 : Storage medium 60 : Accelerometer 61: Velocity graph 62: Acceleration graph 65: Accelerometer 66: Acceleration needle 67A: First area 67B: Second area 67C: Third area 70: Camera 100: Electronic equipment 101: Main body 101A: Second electronic Device 101B : Electronic device 102 : Fixed part 103 : First electronic device 104 : Cable 105 : Sound emission hole 106 : Light emitting part 107 : Mounting member 111 : Processor 112 : Memory 113 : Time measuring part 121 : Lens 122 : Filter 123 : Light receiving element 124: Differential amplifier 125: Integrated circuit 126: Amplifying circuit 127: Emitter follower circuit 128: Waveform shaping circuit 129: Thermistor 191: Touch sensor 192: Microphone 201: Illuminance sensor window 221: Power switch 400: Vehicle 1011: Housing Body 1012 : Lens holder 1013 : Mounting part 1021 : Fixing member 1022 : Pedestal part 1023 : Socket part 1024 : Ball stud 1025 : Mounting member 1261 : Transistor 1271 : Transistor

Claims (21)

a receiving unit that receives electromagnetic waves for measuring the speed emitted from a speed measuring device that measures the speed of the vehicle;
a control unit that performs control to notify a user according to the electromagnetic waves received by the reception unit;
has
The control unit includes:
A system that performs a first notification to urge the vehicle to decelerate as a notification to the user. The system according to claim 1, wherein the control unit performs the first notification when the intensity of the electromagnetic waves received by the reception unit is improving. The control unit includes:
The system according to claim 2, wherein the first notification is performed when the acceleration of the vehicle when the electromagnetic wave is being received is less than or equal to a predetermined value. The control unit includes:
The system according to claim 2, wherein the first notification is performed when a speed difference between the vehicles when the electromagnetic waves are being received is less than or equal to a predetermined value. The control unit includes:
The system according to claim 2, wherein when the first notification is performed, control is performed to display an accelerometer that indicates the acceleration of the vehicle. The control unit includes:
The system according to claim 5, wherein, when the acceleration of the vehicle is not changing, a second notification that prompts a change in the acceleration of the vehicle is performed. The control unit includes:
The system according to claim 6, wherein the second notification is performed when the speed of the vehicle exceeds or is likely to exceed the speed limit and the acceleration of the vehicle does not change. The control unit includes:
If it is determined that the vehicle has passed the position of the speed measuring device, a notification indicating that the vehicle may have been overspeeding is provided, and a third notification is provided to provide information as to whether the vehicle has passed while the vehicle is decelerating.Claim. The system according to item 6. The control unit includes:
Traveling at a point where the speed of the vehicle is measured by the speed measuring device based on the time when the receiving section stops receiving the electromagnetic waves and the history of the speed of the vehicle when the electromagnetic waves are being received. The system according to claim 8, wherein a fourth notification is made to notify speed information. The control unit includes:
Within an area where the speed of the vehicle is measured by the speed measuring device based on the time when the receiving unit stops receiving the electromagnetic waves and the history of the speed of the vehicle when the electromagnetic waves were being received. The system according to claim 9, wherein a fifth notification is performed to notify information on acceleration/deceleration of the vehicle. The speed measuring device emits a laser beam as the electromagnetic wave,
The system according to claim 10, wherein the receiving section includes a light receiving section that receives the laser beam. The control unit includes:
The system according to any one of claims 1 to 11, wherein the system performs processing according to the situation of a parallel vehicle at a position in front of the speed measuring device. The system according to claim 12, wherein the process according to the situation of the vehicle running alongside includes a process of notifying the user. 14. The system according to claim 13, wherein the process of notifying the user includes a process of notifying the user to encourage running alongside other vehicles. The system according to claim 12, wherein the process according to the situation of the vehicle running alongside the vehicle includes a process of acquiring an image captured by a camera disposed on the vehicle and recording the acquired image. The speed measuring device emits a laser beam as the electromagnetic wave,
The receiving section has a light receiving section that receives the laser beam,
The control unit includes:
The system according to claim 15, wherein the traveling direction of the vehicle is recorded when notification according to the reception of the laser beam is performed. The control unit includes:
The system according to claim 16, wherein the image captured by the camera and the traveling direction are recorded in a data format that can be reproduced by software having a function to reproduce the image captured by the camera. The speed measuring device emits a laser beam as the electromagnetic wave,
The receiving section has a light receiving section that receives the laser beam,
The control unit includes:
16. The system according to claim 15, wherein a state of visible light reception by the light receiving section is recorded when notification is being made in response to reception of the laser light. The control unit includes:
19. The system according to claim 18, further comprising recording the state of reception of the laser light as well as the state of reception of visible light by the light receiving unit when notification is being made in response to reception of the laser light. The control unit includes:
The system according to claim 18, wherein the image captured by the camera and the state of reception of the visible light are recorded in a data format that can be reproduced by software having a function to reproduce the image captured by the camera. to the computer,
A function that performs control to notify a user in accordance with the electromagnetic waves received by a receiving unit that receives electromagnetic waves for measuring the speed emitted from a speed measuring device that measures the speed of a vehicle, the function notifying the user. A program for realizing a function of issuing a first notification to encourage deceleration of the vehicle.

Images