JP6765611B2 - In-vehicle electronic devices and programs - Google Patents

Description

The present invention relates to in-vehicle electronic devices and programs.

As one of the in-vehicle electronic devices, there is a microwave detector (radar detector) that detects microwaves in a predetermined frequency band emitted from a speed measuring device installed around the road and outputs an alarm. In addition, some speed measuring devices cannot be detected by the microwave detector. As an example, as is called a loop type, there is a method in which a loop-shaped coil is embedded in the ground, and a vehicle is detected passing over the coil and the vehicle speed is also determined. In addition, there are some that detect the speed of the vehicle by using light other than microwaves. Therefore, when the installation position information of the alarm target such as the speed measuring device is stored in advance and the current position approaches the memorized installation position by using GPS (Global Positioning System) information (when a predetermined relationship is reached). ), There is also an in-vehicle electronic device that issues an alarm regardless of the presence or absence of microwave detection (Patent Document 1).

By the way, in the case of this kind of in-vehicle electronic device, there is not always some kind of alarm target around the own vehicle. Then, in the case of an in-vehicle electronic device with a display unit, a predetermined standby screen is drawn on the display unit during a period in which the alarm is not output to the display unit. An example of this standby screen is a speedometer, a calendar, or the like. Further, as another example of the standby screen, for example, as in the invention disclosed in Patent Document 2, there is a graph display of changes in acceleration and changes in speed during the most recent fixed period.

Japanese Unexamined Patent Publication No. 2008-64588 Japanese Unexamined Patent Publication No. 2010-76740

Depending on the type of information displayed on the standby screen, for example, there is a request to see the transition and history change status over a relatively long period of time, such as from the start of the current driving to the present. In that case, for example, when expressing with a two-axis graph, the start point of the axis corresponding to the period is set at the time of engine start, and the history of changes up to the present is graphed based on the history of information acquired periodically from the time of engine start. indicate.

As the information to be displayed on the standby screen, for example, if the altitude information of the position where the vehicle exists is used, the status of changes in the altitude of the road traveled from the start of the engine to the present is displayed in a graph. You can see at a glance whether you have been driving on a road with such a height difference. However, when the vehicle is driven for a long time, the movement of the entire graph displayed on the standby screen is reduced. That is, the longer the elapsed time from the start of the engine, the smaller the proportion of the area for displaying the information acquired in the subsequent fixed time. Therefore, for example, when driving on a road with a relatively high height difference such as a mountain road, the trajectory of the line displayed on the graph may become an appropriate undulating curve such as a mountain or a valley according to the undulation of the mountain road. .. Then, when the vehicle travels for a long time, the shape of the undulating curve itself maintains a constant shape, and the shape of the curve does not change significantly with the subsequent travel. Then, the shape of the curve does not change so much, and the graph with no big movement continues to be displayed, and the movement and change in the displayed contents are vague, uninteresting, and not very suitable for displaying as a standby screen.

On the other hand, for example, even with the above-mentioned altitude information, if the graph is displayed for the most recent relatively short period, the shape of the displayed graph can be seen to move or change with the passage of time. However, for example, it cannot meet the demand to see the change in altitude of the entire process when crossing a mountain. Such issues are not limited to advanced information, but can be applied to various types of information.

Further, for example, when altitude is used as the information to be displayed on the standby screen, the altitude information is acquired at regular intervals and the graph is displayed based on the altitude information as in the case of other conventional information. There are challenges. For example, if the vehicle is temporarily stopped at the same position due to traffic jam or the like, the altitude of the place where the vehicle is located does not change. However, when the current position is obtained by using GPS information, for example, the obtained current position may not be constant and may vary due to an accuracy error or the like. Then, since the altitude stored in accordance with the position changes as the obtained current position shifts, there is a possibility that the altitude may fluctuate in the displayed graph even though the vehicle is stopped.

On the other hand, if there is no change in the obtained current position while the camera is paused without any accuracy error, the altitude output with the passage of time maintains the same value. Therefore, the graph displayed in such a case, for example, when the time axis is the horizontal axis, the horizontal straight line extends, and there is no change and it is not interesting.

In order to solve the above-mentioned problems, the in-vehicle electronic device according to the present invention is (1) an in-vehicle electronic device that displays a predetermined event occurrence screen when a predetermined event occurs, at least not when the event occurrence screen is displayed. The standby screen display means for displaying the standby screen, which is a screen to be displayed at times, is provided, and the standby screen display means displays the first information that is moving in a short period of time in a graph on the first graph display unit, and the second On the graph display unit, the second information related to the first information is displayed as a graph for a longer period than the graph of the first information. Each display unit may be referred to as a display area, for example. The “period” is, for example, an item of one axis constituting the graph, and for example, specifies an area, an interval, or the like when the graph is displayed. Specifically, the "period" includes, for example, "time during which the vehicle or the like is operating / operating" or "moving distance of the vehicle".

Since the first graph display unit is provided with a high function of displaying the first information that is moving in a short period of time as a graph, the display content of the standby screen displayed when a predetermined event does not occur can be changed. For example, the content will be moving or varied, and will be suitable for display as a standby screen.

Since the present invention has a function of displaying the second information related to the first information as a graph in the second graph display unit for a longer period than the graph of the first information, for example, the second graph. The second information related to the first information is displayed as a graph on the display unit, and the graph of the second information has a longer period than the graph of the first information. Therefore, for example, it is possible to show the overall change of the second information over a relatively long period of time. Therefore, for example, it is preferable to display the contents that can be understood by looking at the whole over a relatively long period as the second information on the second graph display unit because useful and meaningful information can be provided to the driver and the like. In this case, by displaying the entire graph for a relatively long period of time, the shape of the displayed graph may not move or change so much even with the passage of time. Even in such a case, since the graph with motion is displayed on the first graph display unit, the standby screen as a whole exhibits the standby function with motion. Then, in the second graph display unit, for example, when there is little movement / change in the shape of the graph with the passage of time, the driver does not keep looking at the standby screen and thus the second graph display unit, and flickers. You can grasp the overall shape just by looking at it. For example, the user can recognize the content displayed on the second graph display unit while closely watching the situation in front of the vehicle and the surroundings, and the in-vehicle electronic device of the present invention, for example, aims for safe driving. It is also a suitable device.

(2) The short period may be a fixed period in the past from the present time. In this way, for example, information such as the driving operation of the previous user, the state of the vehicle immediately before, the terrain on which the vehicle has traveled immediately before, and the like, which are directly or indirectly related to the new contents of the user's memory, are displayed in a graph. Therefore, it is preferable because the contents that are interesting, interesting, or easy to understand for the user are displayed as the standby screen.

(3) The graph displayed on the second graph display unit may show the accumulation from the occurrence of the event to the present. In this way, the entire transition, history, etc. of the second information from the event occurrence to the present can be collectively displayed as a graph. Therefore, it is preferable that the user can understand at a glance the overall transition of the second information from the occurrence of the event by looking at the graph.

(4) The event occurrence may be either a vehicle start or a reset instruction reception. The start of the vehicle is determined based on, for example, that the ignition switch is turned on, the engine is started, the start switch of the electric vehicle is turned on, and the like. In this way, for example, the transition and history of changes in the second information from the start of driving to the present for this driving can be seen at a glance. Further, as for the reset instruction reception, there is a reset instruction reception from the user, for example, by pressing the reset button switch. Further, when the state of the vehicle or the like satisfies a preset condition, a reset instruction may be accepted. For example, when an event occurs when a reset instruction is received from the user, the user can see the history from an arbitrary point during traveling. In addition, even if the vehicle is parked or stopped, the history of the entire second information that spans a plurality of runs can be viewed by not giving a reset instruction. Therefore, for example, as the second information, information on altitude is used as in the embodiment, and when a user drives a mountain road or the like to cross a mountain, he / she wants to see the state of the undulation of the mountain. In this case, the user can cut the display of the history of the city and suburbs before that by giving a reset instruction before entering the mountain road, and can see the change / transition of the altitude of the mountain part. Also, for example, even if the vehicle is parked and stopped for a break in the middle of a mountain road and then restarted, the altitude will correspond to the undulations of the entire mountain part unless a reset instruction is given when the vehicle is parked or stopped. You can see the history.

(5) The first axis of the graph displayed on the first graph display unit and the graph displayed on the second graph display unit is an item for specifying the period, and the graph displayed on the first graph display unit. The second axis of the graph displayed on the second graph display unit may be information that can change according to the traveling of the vehicle. Information that can change depending on the running of the vehicle includes, for example, altitude, atmospheric pressure, water temperature in the radiator, fuel consumption, residual fuel, speed, acceleration, and the like. The items on the first axis of the first graph display unit and the items on the first axis of the second graph display unit may be the same or different. Similarly, the items on the second axis of the first graph display unit and the items on the second axis of the second graph display unit may be the same or different. By setting the items on the second axis to information that can change according to the running of the vehicle, the graph changes as the vehicle runs, and the graph in the first graph display section is used as a standby function to display the second graph. In the graph of the section, you can see the history of how it changed due to running.

(6) The first axis of the graph displayed on the first graph display unit and the graph displayed on the second graph display unit is an item for specifying the period, and the graph displayed on the first graph display unit. The second axis of the graph displayed on the second graph display unit may be an item that changes according to the operation of the driver. Items that change according to the driver's operation include, for example, fuel efficiency, eco-information, and the degree of safe driving.

(7) The first axis of the graph displayed on the first graph display unit and the graph displayed on the second graph display unit is the same item, and the graph displayed on the first graph display unit and the second graph The second axis of the graph displayed on the display unit should be the same item. In this way, the first information and the second information are the same item although the length of the period is different, so for example, the first graph display part becomes a zoom window for certain information, and the second graph display part becomes a cumulative window. Become. Therefore, it is preferable that the user can check the latest information while observing the situation of the whole running by comparing both.

(8) The standby screen display means displays the first graph and the second graph while the display content displayed on the first graph display unit and the display content displayed on the second graph display unit are the same. It is preferable to display one of the units and display the first graph display unit and the second graph display unit at the same time when the display contents are different. Immediately after the start of operation, only one of the graphs is displayed, so that the graph display area / area can be large, which is preferable because it is easy to see.

(9) When displaying a graph on the second graph display unit, the standby screen display means may display the portion corresponding to the graph displayed on the first graph display unit so that it can be seen. "Displaying the corresponding part so that it can be seen" means, for example, different display forms of the corresponding graph part and the other parts. In addition, instead of changing the display form of the graph, for example, changing the background of the graph (for example, color, pattern, pattern, etc.), displaying a line at the boundary part, indicating the boundary part with an arrow, etc. , Various aspects can be taken.

By doing so, it is preferable because it is possible to see at a glance which part of the graph displayed on the second graph display corresponds to the graph displayed on the first graph display unit, and the correspondence relationship can be easily understood. ..

(10) The period may be specified by the mileage of the vehicle. For example, if the period is specified by the passage of time, when the position detection and altitude based on GPS reception are obtained with the passage of time, the values such as altitude may fluctuate due to the GPS detection accuracy error, etc. It is possible to prevent the display of the graph from fluctuating based on.

(11) At least one of the first information and the second information may be information that specifies the displacement of the height with respect to the mileage. The displacement of height may be directly defined such as altitude or indirectly defined such as atmospheric pressure. In this way, the user can know the change / transition of the height of the traveled portion and the height difference, which is preferable.

(12) The program of the present invention is a program for realizing the function as an in-vehicle electronic device according to any one of (1) to (11) in a computer.

According to the present invention, the shape of the graph displayed on the first graph display unit changes as appropriate with the passage of travel, time, etc., so that the content display is suitable for the standby function. Then, since the information over a relatively long period of time is displayed as a graph on the second graph display unit, the user can confirm the entire transition / history of the second information.

It is a figure which shows the appearance of the radar detector which is a preferable embodiment of this invention. It is a figure which shows the block diagram of a radar detector. It is a figure which shows the display example of a standby screen. It is a figure which shows the display example of a standby screen. It is a figure which shows the display example of a standby screen.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. These drawings are used to illustrate the technical features that can be adopted by the present invention. The configuration of the device and the like described are not intended to be limited to that, but are merely explanatory examples.

[Basic configuration of in-vehicle electronic devices]
1 and 2 show the configuration of a radar detector, which is an embodiment suitable as an in-vehicle electronic device constituting the system of the present invention. The radar detector 1 is provided with a thin rectangular case 2, and is attached and fixed on the dashboard of a vehicle or the like by using a bracket 3 attached to the lower side of the back surface of the case 2.

A display unit 5 is provided on the front surface of the case 2 (the surface facing the rear of the vehicle (driver side)). The display unit 5 is composed of a color TFT liquid crystal display. A touch panel 6 for detecting which part of the display unit 5 is touched is provided on the display unit 5. Further, a volume adjustment button 7 is arranged on the right side of the front surface of the case 2, and various work buttons 8 are arranged on the left side of the case 2.

The right side surface of the case 2 is provided with a card insertion slot 9 for mounting a memory card as a removable recording medium, and a memory card reader 10 is built inside the card insertion slot 9 in the case body 2. By inserting the memory card 11 through the card insertion slot 9, the memory card 11 is attached to the card reader 10. The card reader 10 takes in the data stored in the mounted memory card 11 inside. More specifically, the data stored in the memory card 11 has update information such as new alarm target information (position information such as latitude / longitude, type information, etc.), and the update information is transmitted via the control unit 18. It is stored (downloaded) in the database 19 built in the device, and the data is updated.

The database 19 can be realized by a non-volatile memory (for example, NAND Flash memory) inside the microcomputer of the control unit 18 or externally attached to the microcomputer. Further, the memory card 11 itself may be configured as a part or the whole of the database 19. In the database 19, map data and information on a certain alarm target are registered at the time of shipment, and data and the like on the alarm target added after that are updated as described above.

The GPS receiver 13 is arranged inside the upper center of the back side of the case 2, and the microwave receiver 14 and the wireless receiver 15 are arranged next to the GPS receiver 13. The GPS receiver 13 receives a GPS signal from a GPS satellite and outputs current position (latitude / longitude) information. The microwave receiver 14 receives a microwave having a predetermined frequency emitted from the speed measuring device. The radio receiver 15 receives VHF and UHF band radio waves and the like for traffic control communication. A speaker 16 is built in a predetermined position in the case 2.

A DC jack 17 is arranged below the back side of the case 2. The DC jack 17 is for connecting a cigar plug cord (not shown), and can be connected to a cigar socket of a vehicle via the cigar plug cord to receive power supply.

The acceleration sensor 22 and the barometric pressure sensor 24 are arranged at predetermined positions on the inner surface of the case body 2. The acceleration sensor 22 detects the behavior of the vehicle, and detects the acceleration applied in the traveling direction on the X-axis, the acceleration applied in the lateral direction on the Y-axis, and the acceleration applied in the vertical direction on the Z-axis. As a result, the X-axis detects sudden acceleration / deceleration, the Y-axis detects sudden steering, and the Z-axis detects predetermined behavior of the vehicle such as riding on a step or falling into a depression. The atmospheric pressure sensor 24 measures the atmospheric pressure.

The case body 2 has an OBD adapter 21 that is detachably attached to the OBD-II (II is the Roman numeral "2", hereinafter "OBD-II" is referred to as "OBD2") connector mounted on the vehicle. Is connected. The OBD2 connector is also called a failure diagnosis connector, is connected to the ECU of the vehicle, and periodically outputs various vehicle information. Therefore, by connecting the OBD adapter 21 and the OBD2 connector on the vehicle body side, the control unit 18 periodically acquires various vehicle information.

The vehicle information includes information on the mileage of the vehicle, the vehicle speed, the injection injection time, the intake air amount, the remaining fuel, and the like. Residual fuel is the amount of fuel remaining in the current fuel tank and is output with a resolution of 0.5 liters. Therefore, by acquiring the residual fuel on a regular basis and recording the timing when the change occurs between the previous residual fuel and the current residual fuel, it is consumed from the previous change to the current change. It can be said that the fuel used is 0.5 liters. In addition, some information on fuel consumption (information on lifetime fuel consumption, current fuel consumption, instantaneous fuel consumption, etc.) is output on a regular basis.

Further, the OBD adapter 21 is detachably linked to the connection terminal 23 provided on the case body 2. When the vehicle information from the OBD2 connector is unnecessary, removing the OBD adapter 21 suppresses the wiring from being cluttered on the dashboard or the like, and makes the surroundings of the radar detector clear.

The control unit 18 is a microcomputer including a CPU, ROM, RAM, NAND Flash memory, I / O, etc., and is connected to each of the above-described units as shown in FIG. The control unit 18 creates information to be notified to the driver based on the information input from the above-mentioned various input devices (touch panel 6, GPS receiver 13, microwave receiver 14, wireless receiver 15, etc.). Information is output using an output device (display unit 5, speaker 16, etc.). These basic configurations are basically the same as the conventional ones.

The function of the radar detector 1 of the present embodiment is realized by being stored in the NAND Flash memory of the control unit 18 as firmware executed by the CPU of the control unit 18, and being executed by the CPU of the control unit 18. The firmware stored in the NAND Flash memory can be updated by the new firmware stored in the memory card.

The main information output from the output device of the radar detector 1 is warning information for urging the driver to be safe. The alarm information is output in the following cases, for example. The control unit 18 obtains the distance between the position of the alarm target (latitude and longitude) stored as map information in the database 19 and the current position (latitude and longitude) of the vehicle detected by the GPS receiver 13, and the obtained distance is obtained. When the distance is less than the specified distance, alarm information is output from the output device. Further, for example, the control unit 18 outputs alarm information from the output device when the microwave receiver 14 detects a signal corresponding to the microwave in the frequency band emitted from the speed measuring device. Further, for example, when the control unit 18 receives a predetermined radio wave by the radio receiver 15, the control unit 18 outputs alarm information from the output device. The radar detector 1 outputs warning information to make the driver recognize a dangerous place where a traffic accident is likely to occur. As a result, the radar detector 1 can encourage the driver to drive safely. The above-mentioned warning information is an example, and actually, various other warning information is output to the driver. The alarm information includes, for example, visual information composed of predetermined images, videos, characters, etc. output to the display unit 5, and sound / voice output to the speaker 16.

The function of the radar detector 1 of the present embodiment is realized by being stored in the EEPROM of the control unit 18 as a program executed by the computer included in the control unit 18 and executed by the computer having the control unit 18. Functions realized by the computer by the program included in the control unit 18 include a standby screen display function, a MAP display function, a GPS alarm function, a radar wave alarm function, and a wireless alarm function.

The standby screen display function is a function of displaying a predetermined standby screen on the display unit 5. For example, information such as latitude, longitude, and altitude of the current position of the own vehicle obtained based on the position information detected by the GPS receiver 13 can be displayed in numerical values, graphs, animations, or other modes, or detected by the GPS receiver 13. The existence of GPS hygiene is displayed by numerical values, animation or other sun, or displayed in numerical values, graphs, animation or other modes based on predetermined OBD information acquired by the OBD adapter 21.

The MAP display function is a function of accessing the database 19 based on the current position detected by the GPS receiver 13 and reading and displaying the map data stored in the database 19. Further, the MAP display function searches for the alarm target around the current position based on the position information stored in the database 19, and when the alarm target exists in the vicinity, the alarm target is displayed at the corresponding position on the map. It also has a function to display information (target icon 112, etc.) in an overlapping manner. The specific display mode is as follows.

The control unit 18 displays the current scale information (scale) in the scale display area R3 set on the left side of the main display area R1. The scale sets the vehicle position to 0 m, and displays the distance from the vehicle position to the intermediate position in the vertical direction of the main area R1 (“500” in the figure) and the distance to the upper position (“1000” in the figure). To do. The unit is "m". When the control unit 18 detects that the main display area R1 has been touched twice in succession, the control unit 18 displays a map scale change button at a predetermined position (a position along the scale display area R3) in the main display area R1 (illustrated). Omitted), change the map scale according to the touch on the map scale change button. That is, the control unit 18 changes the scale of the map displayed in the main display area R1 according to the scale of the changed map scale, and also changes the scale information displayed in the scale display area R3.

The control unit 18 that detects one touch on the display unit 5 while executing the predetermined standby screen display function displays a predetermined menu screen. The control unit 18 that has detected that the screen switching button prepared in the menu screen is touched switches to a predetermined MAP display function. Similarly, the control unit 18 that detects one touch to the display unit 5 while executing the MAP display function displays a predetermined menu screen. The control unit 18 that has detected that the screen switching button prepared in the menu screen is touched performs a process of switching to the standby screen display function.

The control unit 18 has a GPS alarm function, a radar wave alarm function, and a radio according to an event that occurs during the execution of the standby screen display function and the MAP display function (hereinafter, these functions are collectively referred to as the standby function). The process for realizing each function such as the alarm function is executed, and when the process of the function is completed, the process returns to the original standby function process. The priority of each function is set in the order of radar wave warning function, wireless warning function, and GPS warning function from the highest priority.

The GPS alarm function is a process executed at predetermined time intervals (1 second intervals) by an event from the timer of the control unit 18, and is detected by the latitude and longitude of the alarm target stored in the database 19 and the GPS receiver 13. The distance between the two is obtained from the latitude and longitude of the current position, and when the obtained distance reaches a predetermined approach distance, a GPS alarm display (for example, a schematic diagram of the alarm target, the remaining distance, etc.) is displayed on the display unit 5, and the speaker 16 It is a process to output an approach warning sound indicating that effect.

Such alarm targets include dozing driving accident points, radar, speed limit switching points, control areas, inspection areas, ban monitoring areas, N systems, traffic monitoring systems, intersection monitoring points, signal neglect deterrence systems, police stations, and frequent accidents. Area, frequent on-board area, steep / continuous curve (expressway), branch / confluence point (expressway), ETC lane advance guidance (expressway), service area (expressway), parking area (expressway), highway Oasis (expressway), smart interchange (expressway), gas station in PA / SA (expressway), tunnel (expressway), highway radio reception area (expressway), prefectural border announcement, roadside station, viewpoint parking, etc. The type information of these target objects, the latitude / longitude information indicating the position thereof, the schematic diagram or photograph data displayed on the display unit 5, and the audio data are stored in the database 19 in association with each other.

The radar wave warning function is provided when a signal corresponding to a microwave in a frequency band emitted from a speed measuring device (mobile radar or the like (hereinafter, simply referred to as “radar”)) is detected by the microwave receiver 14. This is an alarm function that displays an alarm screen 131 on the display unit 5 and outputs an alarm sound from the speaker 20. For example, when a microwave in the microwave frequency band emitted by the radar is detected by the microwave receiver 4, a schematic diagram or a photograph of the radar stored in the database 19 is displayed on the display unit 5 as an alarm screen, and at the same time. The voice data stored in the database 19 is read out, and the voice "Radar. Be careful of speed" is output from the speaker 16.

The wireless alarm function is a function of issuing an alarm when the wireless receiver 15 receives a radio wave emitted by an emergency vehicle or the like so as not to interfere with the traveling or the like. In the radio alarm function, control radio, car location radio, digital radio, extra small radio, station activity radio, police telephone, police activity radio, wrecker radio, heli-tele radio, fire heli-tele radio, fire-fighting radio, emergency radio, highway radio , The frequency of the security radio, etc. is scanned, and when the radio is received at the scanned frequency, a schematic diagram indicating that the radio corresponding to that frequency stored in the database 19 for each radio type is received is used as an alarm screen. In addition to displaying on the display unit 5, the voice data stored in the database 19 for each radio type is read out, and an alarm voice indicating the radio type is output from the speaker 16. For example, when a crackdown radio is received, a voice is output like "It is a crackdown radio. Be careful of speed."

[Standby function] (Standby screen display function)
FIG. 3 shows an example of a display screen of the standby screen display function which is a main part of the present invention. In the present embodiment, the control unit 18 displays a graph of the altitude of the current position acquired based on the current position information output from the GPS receiver 13.

In the display layout to be output to the display screen 30 of the display unit 5, graph display units are arranged in two upper and lower stages. That is, the first graph display unit 31 is arranged above the display screen 30, and the second graph display unit 32 is arranged below the display screen 30. The first graph display unit 31 is a display area for displaying the first information that is moving in a short period of time as a graph. The second graph display unit 32 is a display area for displaying the second information related to the first information in a graph for a longer period than the graph of the first information. Both the first information and the second information are altitude information which is height-specific information as one of the information that can change according to the traveling of the vehicle. Furthermore, both periods are specified by the distance traveled.

Further, in the graphs displayed on the graph display units 31 and 32, the horizontal axis, which is the first axis, is the distance, which is an item for specifying the period, and the vertical axis, which is the second axis, is altitude. The horizontal axis of the first graph display unit 31 is a fixed period (for example, 3 km) from the present time point to the past. The horizontal axis of the second graph display unit 32 is the distance from the event occurrence to the present. In the present embodiment, the event occurs when the vehicle is started (for example, the ignition key is turned on, the starting switch of the electric vehicle is turned on, etc.). As a result, the control unit 18 displays the state of the latest altitude change on the first graph display unit 31, and displays the cumulative altitude change from the start of the vehicle to the present on the second graph display unit 32.

The control unit 18 displays a predetermined graph on the graph display units 31 and 32 as described above, and the function for performing the process of displaying the graph is, for example, as follows. The control unit 18 stores the altitude of the current position acquired based on the current position information output from the GPS receiver 13 when the vehicle is started in the altitude history information storage unit in association with the moving distance (here, the distance is 0 m). To do. This advanced history information storage unit can be set in a predetermined storage means such as a RAM or a NAND Flash memory of the control unit 18, or a storage area in a predetermined storage means of an in-vehicle electronic device other than the control unit 18, or software. Have it as a memory on the program.

Next, the control unit 18 acquires information on the moving distance of the vehicle as OBD information. Then, each time the vehicle moves a predetermined distance (for example, 10 m), the control unit 18 associates the altitude of the current position acquired based on the current position information output from the GPS receiver 13 with the movement distance and performs an altitude history. Store in the information storage unit. As a result, the altitude history information storage unit stores and holds history information about the transition of altitude every 10 m in travel distance from the start of the vehicle.

The control unit 18 accesses the altitude history information storage unit, acquires predetermined history information stored in the altitude history information storage unit, and displays each graph on the graph display units 31 and 32. Specifically, the first graph display unit 31 acquires altitude information for the past 3 km from the latest and plots it at a position corresponding to each altitude on the graph. That is, in the present embodiment, since altitude information is acquired and recorded every 10 m, the latest 300 altitude data are extracted.

Then, the control unit 18 determines the maximum value on the vertical axis from the maximum value in the extracted latest 300 altitude data, and from the minimum value in the latest 300 altitude data on the vertical axis. Determine the minimum value. Then, the control unit 18 displays the determined maximum value and minimum value of the vertical axis at appropriate positions on the vertical axis, and sets the altitude corresponding to each position on the vertical axis. Further, the control unit 18 reads out the latest altitude-related movement distance, sets the movement distance as a value in kilometers, and displays it at the right end of the horizontal axis. Further, the control unit 18 reads out the movement distance associated with the 300th altitude from the latest to the past, sets the movement distance as a value in kilometer, and displays it at the left end of the horizontal axis.

In the display area of the first graph display unit 31, for example, the horizontal axis is set to 300 dots of liquid crystal display pixels. Then, the control unit 18 creates a graph of the first information by arranging the acquired latest 300 altitude data in chronological order and plotting them at the positions corresponding to the altitudes on the vertical axis.

Further, with respect to the second graph display unit 32, the control unit 18 appropriately thins out the data based on the number of data stored in the altitude history information storage unit and equalizes all the data from the start of the vehicle to the present. 300 pieces of data are extracted. Then, the control unit 18 determines the maximum value on the vertical axis from the maximum value in the extracted 300 altitude data, and from the minimum value in the 300 altitude data on the vertical axis. Determine the minimum value. Then, the control unit 18 displays the determined maximum value and minimum value of the vertical axis at appropriate positions on the vertical axis, and sets the altitude corresponding to each position on the vertical axis. Further, the control unit 18 reads out the latest altitude-related movement distance, sets the movement distance as a value in kilometers, and displays it at the right end of the horizontal axis. Further, the control unit 18 displays the moving distance at the time of the event occurrence, that is, 0.0 km of the vehicle instruction Uji at the left end of the horizontal axis. Then, the control unit 18 creates a graph for the second information by arranging the extracted 300 altitude data in chronological order and plotting each data at the position corresponding to the altitude on the vertical axis.

Determining the maximum and minimum values for the vertical range allows all data to be displayed on the graph. Therefore, the maximum value on the vertical axis is determined to be larger than the maximum value in the altitude data, and the minimum value on the vertical axis is determined to be smaller than the minimum value in the altitude data. Further, the maximum value and the minimum value of the vertical axis are determined so that the graph to be displayed is displayed as large as possible in the display area of the graph display unit so that the user can easily see the graph to be displayed. Therefore, for example, the control unit 18 takes a predetermined margin for each of the maximum value and the minimum value in the altitude data, or rounds up or down at a predetermined position (for example, the 1st place). Determine the maximum and minimum values on the vertical axis.

The control unit 18 displays on the first graph display unit 31 the change in altitude of the vehicle's existing position in the most recent relatively short period (the moving distance of the vehicle in this embodiment). Therefore, the shape of the graph changes from moment to moment, and there is movement, which makes it suitable for displaying as a standby screen. Moreover, since it is the latest altitude transition, it is new to the user's memory, and it is good because it matches the terrain on which he has traveled and becomes more interesting.

Further, since the control unit 18 displays the history of the altitude transition from the start of the vehicle to the present on the second graph display unit 32, the user can understand at a glance the undulation state of the road on which the vehicle has traveled this time. be able to. For example, when the current run is to drive over a rugged road such as a mountain road and cross a mountain, it is preferable because the undulating state of the mountain that has crossed the mountain can be understood at a glance. In addition, it is not limited to such mountain crossing, and even if the user thinks that the road has little height difference, such as in the city or on an expressway, the history from the start of driving is viewed. By doing so, for example, there is a difference in elevation than I expected, and it is good to have fun such as being able to make new discoveries.

Further, in the present embodiment, since the horizontal axis is the moving distance, for example, when the vehicle is temporarily stopped due to traffic jam or the like, the moving distance does not change, so that new position detection and altitude acquisition based on the moving distance are not performed. .. Therefore, since the graph displays of the first graph display unit 31 and the second graph display unit 32 are not updated, for example, the display of the graph such as altitude does not change when the vehicle is stopped. In particular, in the present embodiment, since the moving distance is acquired from the OBD information, the presence or absence of movement and the distance can be accurately obtained.

Further, in the present embodiment, the layout is such that the status area 33 for displaying the status information is arranged on the right side of the display screen 30, and the time display area 34 is arranged on the upper right side. In the present embodiment, the status information is the value of each item to be displayed as a graph. Here, since the items of the first graph display unit 31 and the items of the second graph display unit 32 are the same, the current altitude is displayed above the status area 33, and the current altitude is displayed below the status area 33. Display the distance. This current distance is the distance traveled from the start of the vehicle at the time of the event. By displaying the current value numerically in this way, the user can recognize the current information as an absolute value. Further, the control unit 18 displays the current time in the upper right corner of the display screen.

Further, in the present embodiment, the items of the first graph display unit 31 and the items of the second graph display unit 32 are the same. Therefore, for example, the first graph display unit 31 is a zoom window that displays data related to the latest distance-altitude. The second graph display unit 32 becomes a cumulative window for displaying data related to the distance-altitude of the entire travel. Therefore, while looking at the first graph display unit 31, the user magnifies and confirms the change in altitude and the change in height difference of the road on which the vehicle has traveled most recently, and while looking at the second graph display unit 32, the entire running this time You can check the transition of altitude.

Further, in the example shown in FIG. 3, it is 18.5 km after the start of traveling, and the height difference of the entire stroke is less than 50 m. Therefore, the range on the vertical axis of the first graph display unit 31 and the second graph display unit. There is not much difference in the range of the vertical axis of 32, and both graphs are displayed over the entire display area, and the scale of the vertical axis is almost the same. For example, when the mileage is further extended and the difference between the maximum value and the minimum value of altitude becomes large, the range of the vertical axis of the second graph display unit 32 becomes large and is displayed on the second graph display unit 32. While the graph has a larger scale for altitude, the graph displayed on the first graph display unit 31 has a height difference for the most recent 3 km, so the altitude is also higher than that for the second graph display unit 32. It can be enlarged and displayed.

[Modification example]
FIG. 4 shows a modified example on the premise of an embodiment in which the items of the first graph display unit 31 and the items of the second graph display unit 32 are the same. When the item of the first graph display unit 31 and the item of the second graph display unit 32 are the same, the graph displayed on the first graph display unit 31 is a part of the graph displayed on the second graph display unit 32. It will correspond to.

Therefore, in this modification, when the control unit 18 displays the graph on the second graph display unit 32, the control unit 18 displays the portion corresponding to the graph displayed on the first graph display unit 31 so that it can be understood. In FIG. 4, for convenience, the corresponding portion of the graph displayed on the second graph display unit 32 is indicated by a solid line, and the other portion is indicated by a broken line. Then, in reality, the control unit 18 controls, for example, to change the display color or the brightness of the portion indicated by the solid line and the portion indicated by the broken line of the graph of the second graph display unit 32. Further, the line type may be changed as shown in the figure. In this case, it is realized by repeating the data plotted at the position corresponding to the altitude so as to be a broken line and the hidden data not plotted in an appropriate order. Also, instead of changing the display form of the line part that makes up the graph, you can change the color, pattern, pattern, etc. of the background part of the graph, display the line at the boundary part, and indicate the boundary part with an arrow. In addition to doing so, various measures may be taken.

This modification is preferable because it is possible to see at a glance which part of the graph displayed on the second graph display unit corresponds to the graph displayed on the first graph display unit, and the correspondence relationship can be easily understood. Then, as the mileage increases, the proportion of the graph displayed on the first graph display unit 31 in the graph displayed on the second graph display unit 32 decreases. Therefore, for example, as the mileage increases, the display modes such as color and brightness change even if the shape of the graph displayed on the second graph display unit 32 does not change much. For example, when changing the color, the portion displayed in the color corresponding to the graph displayed on the first graph display unit 31 gradually becomes shorter and narrower, so that the second graph display unit 32 displays the shape of the graph. Even if there is little change, the color of the graph will change and the standby function will be exhibited.

[Transformation example immediately after start]
In the above-described embodiment and modification, the layout in which the first graph display unit 31 and the second graph display unit 32 are arranged vertically is adopted. Since the items of the first graph display unit 31 and the items of the second graph display unit 32 are the same, the first graph display unit 31 and the second graph display unit 32 have the same items from the start of the vehicle until the movement of 3 km. The displayed contents are the same.

Therefore, the control unit 18 uses the first graph from the start of the vehicle until the vehicle moves 3 km so that the display content displayed on the first graph display unit 31 and the display content displayed on the second graph display unit are the same. Only one of the display unit 31 and the second graph display unit 32 is displayed, and the first graph display unit and the second graph display unit are displayed at the same time when 3 km with different display contents has passed, for example. In the illustrated example, as shown in FIG. 5A, the control unit 18 initially displays only the second graph display unit 32. At this time, the control unit 18 displays the second graph display unit 32 by using the entire display screen in the vertical direction. By doing so, the graph can be displayed in a wide area nearly twice as wide in the vertical direction as compared with the one displaying the two graph display units after 3 km, and the graph can be displayed larger.

Further, as shown in FIG. 5C, after 3 km has passed, both the first graph display unit 31 and the second graph display unit 32 are displayed. Further, in this modification, when switching from the display of only the second graph display unit 32 at the time when 3 km has elapsed to the display of both graph display units 31 and 32, as shown in FIG. 5B, the control unit 18 The first graph display unit 31 is instantly displayed in a normal display mode, and the vertical axis of the second graph display unit 32, which has been fully displayed in the vertical direction, is gradually reduced to a shorter length. As a result, the upper portion of the second graph display unit 32 and the lower portion of the first graph display unit 31 are displayed in an overlapping state. Finally, as shown in FIG. 5C, the first graph display unit 31 and the second graph display unit 32 are displayed in a layout in which they are arranged vertically in parallel. In this way, by gradually moving the upper end of the second graph display unit 32 downward and showing the movement so as to gradually reduce the display area in the vertical direction, it becomes more interesting and two bluffs are displayed from one graph display. It is possible to appeal that the display has been switched.

By doing so, in this modified example, since only one of the graphs is displayed immediately after the start of operation, a large display area / area of the graph can be taken, which is preferable because it is easy to see.

Instead of providing the movement of gradually reducing the second graph display unit 32 in this way, the state shown in FIG. 5A may be suddenly changed to and switched from the state shown in FIG. 5C. Further, the first graph display unit 31 may be displayed in the initial state shown in FIG. 5A.

Further, when switching from the state shown in FIG. 5A to the state shown in FIG. 5C, a person who displays the graph display unit (here, the first graph display unit 31) to be displayed later so as to zoom in appropriately. It may be better to make the display at the time of switching move.

Further, on the actual display screen shown in FIG. 5, the control unit 18 displays a parking prohibition area notification mark M1 imitating a parking prohibition sign on the upper left. This is displayed under a predetermined condition when the current position is in the parking prohibition monitoring area from the current position and the alarm target information stored in the database 19. That is, for example, if the current position is within the most important area / priority area of the illegal parking control guideline, it is displayed to notify that fact, or it is displayed when the speed is below a certain speed within the relevant area. Or something.

Further, in FIGS. 5 (a) and 5 (c), when a police station exists around the current position (for example, within 500 m), the police station notification mark M2 is displayed, and in FIG. 5 (b), the current position is displayed. When there is a police box in the surrounding area (for example, within 500 m), the police box notification mark M3 is displayed, the direction in which the warning target such as the police station or police box exists is indicated by an arrow, and the distance to the warning target is indicated. It is shown numerically.

[Example of modification of period]
In the above-described embodiment and modification, the horizontal axis of the graph displayed on the first graph display unit 31 and the graph displayed on the second graph display unit 32 is a distance as an item for specifying the period, but as an elapsed time. May be good. Further, the item for specifying the period on the horizontal axis of the first graph display unit 31 and the item for specifying the period on the horizontal axis of the second graph display unit 32 may be different.

In the above-described embodiments and modifications, the period of the first graph display unit 31 is a fixed period from the current time point, but the present invention is not limited to this, and may be a fixed period in the past.

In the above-described embodiment and modification, the start point of the period of the second graph display unit 31 is the time when the vehicle is started as the time when the event occurs, but the present invention is not limited to this, and for example, a predetermined reset instruction is accepted. It is good to do it. As a reception of a reset instruction from the user, for example, when the control unit 18 recognizes that the display screen of the display unit 5 is touched based on the signal from the touch panel 6, the menu screen is displayed and the menu screen is displayed in a predetermined layer. When the reset instruction reception is triggered by pressing the button area of the reset instruction reception provided, or when a touch in a predetermined area of the standby screen shown in FIG. 3 or the like, for example, the second graph display unit 32 is detected, the reset instruction reception is performed. It is good to do it. Further, the control unit 18 may be triggered by the detection of the press of the reset instruction reception button assigned to the remote controller switch.

When the control unit 18 receives the reset instruction, it marks, for example, the latest altitude of the altitude history information storage unit at the time of reception and the travel distance associated with it, and displays the travel distance in the second graph. The display of each graph display unit is updated every time a predetermined distance (for example, 10 m) is moved and new altitude information is recorded, using the starting point on the horizontal axis of the display unit 32. At this time, it is preferable that the first graph display unit 31 is not cleared by receiving the reset instruction, and the altitude data for the latest predetermined distance (for example, 3 km) is displayed as a graph.

Further, the graph displayed on the first graph display unit 31 may also be reset at the same time as the reception of the reset instruction. In such a case, the control unit 18 that has received the reset instruction erases the past altitude information recorded in the altitude history information storage unit, and sets the time when the reset instruction is received as the altitude history as when the vehicle was started. High-level information is recorded in the information storage unit and graphs are displayed in each graph display unit.

In this way, the user can see the history from any point on the way of traveling. In addition, even if the vehicle is parked or stopped, the history of the entire second information that spans a plurality of runs can be viewed by not giving a reset instruction. Therefore, for example, when the user drives on a rugged road such as a mountain road and crosses a mountain, and wants to see the undulating state of the mountain that has crossed the mountain, the user gives a reset instruction before entering the mountain road. By doing so, it is possible to cut the display of the history of the suburbs in the city before that and see the change / transition of the altitude of the mountain part. Also, for example, even if the vehicle is parked and stopped for a break in the middle of a mountain road and then restarted, the altitude will correspond to the undulations of the entire mountain part unless a reset instruction is given when the vehicle is parked or stopped. You can see the history. However, in that case, the altitude history information storage unit uses a non-volatile memory, or is stored in the altitude history information storage unit when the vehicle is parked or stopped by turning off the ignition switch or turning off the start button of the electric vehicle. The data related to the data is backed up, and the data backed up at startup is set in a predetermined storage unit.
Furthermore, the reception is not limited to the reception of the reset instruction from the user, and the reset instruction may be received when the state of the vehicle or the like satisfies a preset condition.

Further, the starting point of the horizontal axis for specifying the period in the second graph display unit 32 is when an event occurs such as when the vehicle is started or when a reset instruction is received. For example, the period from the time when the event occurs ( For example, when the elapsed time (moving distance or elapsed time) exceeds the threshold value, the start point on the horizontal axis may be shifted so as to be gradually delayed. For example, when information is acquired for each predetermined distance (for example, 10 m) and the graph is updated as in the embodiment, the start point is shifted by a predetermined distance when the threshold value (for example, 500 km, 100 km, etc.) is exceeded. .. That is, when the item for specifying the period is the distance as in the embodiment, when the threshold value is exceeded, the range on the horizontal axis maintains the threshold value distance.

[Example of item modification]
In the above-described embodiment and modification, the item of the graph to be displayed on each graph display unit is advanced, but the present invention is not limited to this, and for example, it may be information that can change according to the traveling of the vehicle. .. Information that can change depending on the traveling of the vehicle includes various information such as atmospheric pressure, water temperature in the radiator, fuel consumption, residual fuel, speed, acceleration, and the like. Atmospheric pressure is information that changes according to the displacement of the height position where the vehicle exists with traveling, and is information that specifies the displacement of the height of the vehicle. In addition, fuel consumption, speed, acceleration, etc. are displayed as a standby function with large changes in the displayed graph by displaying the changes in the latest situation, etc. in a short period on the first graph display unit 31. At the same time, for example, by displaying the transition from the start of the vehicle to the present on the second graph display unit 32, it is possible to notify the tendency of the overall change due to traveling.

Further, the graph displayed on the first graph display unit and the second axis of the graph displayed on the second graph display unit may be items that change according to the operation of the driver. Items that change according to the driver's operation include, for example, fuel efficiency, eco-information, and the degree of safe driving. As for the degree of safe driving, for example, the higher the number of times the acceleration exceeds the set threshold value, the lower the degree of safe driving, and the larger the acceleration is detected, the lower the degree of safe driving. Fuel consumption is calculated from mileage and fuel consumption. The fuel consumption is obtained from, for example, the change in the remaining fuel acquired as OBD information. For example, the better the fuel efficiency, the more eco-driving is determined, and the less the change in speed is, the more eco-driving is determined. The determination result is quantified and displayed on a graph.

By setting the items to change according to the driver's operation, for example, by displaying the latest graph on the first graph display unit 31, the user can objectively judge how his / her driving operation was. , It is possible to reflect on whether or not the operation was appropriate.

Further, in the above-described embodiments and modifications, the first graph display unit 31 and the second graph display unit 32 have an arrangement layout in which they are arranged vertically, but they may be arranged in various layouts such as left and right. Further, in the above-described embodiments and modifications, the item for specifying the period is set on the horizontal axis, but the item for specifying the period may be set on the vertical axis.
Further, the above-described embodiment and each modification may be combined as appropriate.

In the above-described embodiment and modified example, a radar detector of a type in which the in-vehicle electronic device of the present invention is fixedly installed by attaching a bracket 3 to a predetermined position in a dashboard or the like is described as an example. However, it can also be applied to a mirror type radar detector attached to a room mirror. Further, the present invention is not limited to the radar detector, and can be implemented as a function of various in-vehicle electronic devices. For example, it may be incorporated as a function of a navigation device or the like.

Further, in the above-described example, a database 19 storing various information is provided in the apparatus, and the control unit 18 accesses the database 19 to read necessary information and performs various processes, but the present invention is limited to this. There is no such thing. That is, a part or all of the information to be registered in the database 19 is registered in the external server. The radar detector and other in-vehicle electronic devices may have a function of communicating with the server, and the control unit 18 may appropriately access the server, acquire necessary information, and execute the process. A part or all of the control unit may be mounted on the server, a part of the processing may be executed on the server side, the result may be acquired on the in-vehicle device side, and a predetermined display may be performed. Further, the display device may be a display device that is mounted on another in-vehicle device or vehicle.

1 Radar detector 2 Case 5 Display 6 Touch panel 7 Volume control button 8 Work button 10 Memory card reader 11 Memory card 13 GPS receiver 14 Microwave receiver 15 Wireless receiver 16 Speaker 18 Control unit 19 Database

Claims (5)

An electronic device that controls the display of a graph in the graph display area on the screen.
A function to display the entire first graph in the graph display area,
A function to display the entire first graph and the entire second graph in the graph display area,
A function for automatically switching from a state in which the entire first graph is displayed in the graph display area to a state in which the entire first graph and the entire second graph are displayed when a predetermined condition is satisfied. Prepare,
When the state of displaying the first graph is automatically switched to the state of displaying the first graph and the second graph when a predetermined condition is satisfied, the entire first graph and the second graph are displayed . An electronic device characterized in that a moving display is displayed in which the upper part of the second graph and the lower part of the first graph overlap each other so that the entire graph can be visually recognized. When a predetermined condition is satisfied to automatically switch from the state of displaying the first graph to the state of displaying the first graph and the second graph, the entire first graph is instantly displayed. The electronic device according to claim 1, wherein the electronic device is displayed and the second graph is displayed in a moving manner. When a predetermined condition is satisfied, the moving display when automatically switching from the state of displaying the entire first graph to the state of displaying the entire first graph and the entire second graph is The electronic device according to claim 1 or 2, wherein one axis of the first graph is gradually shortened. The moving display when a predetermined condition is satisfied is automatically switched from the state of displaying the entire first graph to the state of displaying the entire first graph and the entire second graph. The electronic device according to any one of claims 1 to 3, wherein the second graph is zoomed in. The program for realizing the function of the electronic device in the computer according to any one of claims 1 to 4.