JP6355284B2 - In-vehicle electronic device and program - Google Patents

Description

  The present invention relates to an in-vehicle electronic device and a program.

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

  By the way, in the case of this type of vehicle-mounted electronic device, some kind of alarm target does not always exist around the vehicle. And in the case of the vehicle-mounted electronic device with a display part, a predetermined standby screen is drawn on the display part in the period which does not output an alarm to a display part. Examples of the standby screen include a speedometer and a calendar. Further, as another example of the standby screen, there is a screen that displays a change in acceleration or a change in speed for a certain period of time, as in the invention disclosed in Patent Document 2, for example.

JP 2008-64588 A JP 2010-76740 A

  Depending on the type of information displayed on the standby screen, for example, there is a request to view the state of transition and history change over a relatively long period from the start of driving this time to the present. In that case, for example, when expressing with a graph of two axes, the starting 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 periodically acquired from the time of engine start. indicate.

  As information to be displayed as the standby screen, for example, if it is altitude information of the position where the vehicle is present, the status of the change in altitude of the road that has traveled since the engine started until now is displayed in a graph. You can understand at a glance whether you have been driving on a road with such a height difference. However, if the vehicle travels for a long time, the movement of the entire graph displayed on the standby screen is reduced. In other words, the longer the elapsed time from the start of the engine, the smaller the proportion of the area for displaying information acquired in a certain time thereafter. Therefore, for example, when traveling on a road with a relatively high difference, such as a mountain road, the trace of the line displayed in the graph may be a curve with undulations such as an appropriate mountain or valley according to the undulations of the mountain road . 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 greatly with the subsequent travel. As a result, the shape of the curve does not change so much and a graph without a large movement continues to be displayed, the display contents are steeply moved and changed, are not interesting, and are not very suitable for displaying as a standby screen.

  On the other hand, for example, even in the above-described altitude information, if a graph is displayed for the most recent relatively short period, movement / change with the passage of time or the like can be seen in the shape of the displayed graph. However, for example, it is not possible to meet the demand to see the transition of the altitude of the whole process when crossing a mountain. Such a problem is not limited to altitude information, but can be applied to various types of information.

  Also, for example, when altitude is used as information to be displayed on the standby screen, altitude information is acquired at regular intervals like other previous information, and a graph is displayed based on the acquired altitude information, the following is shown: There are challenges. For example, when the vehicle is temporarily stopped at the same position due to traffic jams or the like, the altitude of the place where the vehicle exists does not change. However, for example, when the current position is obtained using GPS information, the current position obtained due to an accuracy error or the like may not be constant and may vary. Then, since the altitude memorize | stored corresponding to a position changes with the shift | offset | difference of the calculated | required present position, there exists a possibility of causing the state from which an altitude fluctuates in the graph displayed, even if it has stopped.

  On the other hand, if there is no change in the obtained current position while there is no accuracy error or the like and the vehicle is temporarily stopped, the altitude output with the passage of time maintains the same value. Therefore, the graph displayed in such a case is a mode in which a horizontal straight line extends when the time axis is a horizontal axis, for example, and is not interesting.

  In order to solve the above-described problems, an in-vehicle electronic device according to the present invention is (1) in an in-vehicle electronic device that displays a predetermined event occurrence screen when a predetermined event occurs, at least when the event occurrence screen is not displayed. A standby screen display means for displaying a standby screen which is a screen to be displayed at the time, the standby screen display means displays a first information that moves in a short period of time on the first graph display section as a graph; Second information related to the first information is displayed in a graph on the graph display unit in a longer period than the graph of the first information. Each display unit may be referred to as a display area, for example. “Period” is, for example, an item of one axis constituting a graph, and specifies, for example, a region, a section, 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”, “travel distance of the vehicle”, and the like.

  Since the present invention is equipped with a high function to display the first information that moves in a short period of time in the first graph display section, the display content of the standby screen displayed when a predetermined event has not occurred, For example, the content has a lot of movement and changes, and is suitable for displaying as a standby screen.

  And since this invention is equipped with the function to display the 2nd information relevant to said 1st information in a graph longer than the graph of said 1st information in a 2nd graph display part, for example, a 2nd graph The display unit displays the second information related to the first information in a graph, and the second information graph has a longer period than the graph of the first information. Therefore, for example, the overall change of the second information over a relatively long period can be shown. Therefore, for example, it is preferable to display information that can be understood by looking at the whole over a relatively long period of time as second information on the second graph display section because it can provide useful and meaningful information to the driver or the like. In this case, by displaying the entire relatively long period as a graph, the shape of the displayed graph may not change or change significantly even with the passage of time. Even in such a case, since the moving graph is displayed on the first graph display section, the standby screen as a whole exhibits a moving standby function. Then, in the second graph display section, for example, when there is little movement / change in the shape of the graph with the passage of time, etc., the driver does not keep watching the standby screen and thus the second graph display section. The whole shape can be grasped only by looking. For example, the user can recognize the content displayed on the second graph display portion while firmly watching the situation in front of and around the vehicle, and the in-vehicle electronic device according to the present invention is intended for safe driving, for example. It is also suitable for the device.

  (2) The short period may be a certain period in the past from the current time point. In this way, for example, the user's driving operation, the state of the immediately preceding vehicle, the terrain that the vehicle has traveled immediately before, etc. are displayed in a graph on the user directly or indirectly related to the new contents. Therefore, the contents that are interesting to the user, interesting, or easy to understand are displayed on the standby screen, which is preferable.

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

  (4) The event occurrence may be either start of the vehicle or acceptance of a reset instruction. The start of the vehicle is determined by, for example, turning on the ignition switch, starting the engine, turning on the start switch of the electric vehicle, or the like. In this way, for example, the transition and history of changes in the second information from the start of traveling to the present for the current driving can be known at a glance. Also, the reset instruction reception includes a reset instruction reception from the user, for example, by pressing a reset button switch. Moreover, it is good also as reception of reset instruction | indication when the state of a vehicle etc. satisfy | fill the conditions set beforehand. For example, when an event is that a reset instruction has been received from the user, the user can see a history from an arbitrary point during traveling. In addition, even if the vehicle is parked or stopped, a history of the entire second information over a plurality of travels can be viewed by not issuing a reset instruction. Therefore, for example, as the second information, the information about the altitude is used as in the embodiment, and when the user drives over a mountainous road such as a mountain road and crosses the mountain, the user wants to see the undulation state of the mountain over the mountain. In this case, by giving a reset instruction just before entering the mountain road, the user can cut the display of the history of the suburb portion in the city before that, and can see the change and transition of the altitude of the mountain portion. Also, for example, even if the vehicle is parked and stopped on a halfway along the mountain road and then restarted, if the reset instruction is not given when the vehicle is parked, the altitude corresponding to the overall undulation of the mountain part 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. Examples of information that can be changed according to the traveling of the vehicle include altitude, atmospheric pressure, water temperature in the radiator, fuel consumption, remaining fuel, speed, acceleration, and the like. The first axis item of the first graph display unit and the first axis item of the second graph display unit may be the same or different. Similarly, the second axis item of the first graph display unit and the second axis item of the second graph display unit may be the same or different. By changing the item of the second axis to information that can change according to the vehicle's travel, the graph changes as the vehicle travels, and the graph on the first graph display section serves as a standby function. The graph of the part can see the history of how it changed by 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 driver's operation. Items that change according to the driver's operation include, for example, fuel consumption, 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 are 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 may be the same item. In this way, the first information and the second information are the same item, although the lengths of the periods are different. For example, the first graph display unit is a zoom window for certain information, and the second graph display unit is a cumulative window. Become. Therefore, it is preferable that the user can confirm the latest information while comparing the both while viewing the situation of the entire traveling.

  (8) The standby screen display means displays the first graph display unit and the second graph display 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 either the first graph display unit or the second graph display unit simultaneously when any one of the units is displayed and the display content is different. Immediately after the start of operation, only one of the graphs is displayed. Therefore, the display area / area of the graph can be increased, which is preferable because it is easy to see.

  (9) When the standby screen display means displays a graph on the second graph display unit, the standby screen display unit may display the portion corresponding to the graph displayed on the first graph display unit. “Display so that the corresponding portion can be understood” means, for example, that the display form of the corresponding graph portion is different from that of the other portions. Also, instead of changing the display form of the graph, for example, changing the background of the graph (for example, color, pattern, design, etc.), displaying a line at the boundary, or indicating the boundary with an arrow, etc. Various aspects can be taken.

  By doing so, it is preferable because it can be understood 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 can be easily understood. .

  (10) The period may be specified by a travel distance of the vehicle. For example, if the period is specified by the passage of time, the position detection or altitude based on the GPS reception is obtained with the passage of time, and the value of the altitude or the like may fluctuate due to a GPS detection accuracy error. It can suppress that the display of the graph concerned changes based on.

  (11) At least one of the first information and the second information may be information specifying a height displacement with respect to a travel distance. The displacement in height may be defined directly such as altitude or indirectly such as atmospheric pressure. This is preferable because the user can know the height change / change and height difference of the traveled location.

  (12) A program of the present invention is a program for causing a computer to realize the function as the on-vehicle electronic device according to any one of (1) to (11).

  According to the present invention, the shape of the graph displayed on the first graph display unit is appropriately displayed as a standby function because the shape of the graph changes as the vehicle travels and time elapses, for example. Since the information over a relatively long period is displayed in a graph on the second graph display unit, the user can check the entire transition / history of the second information.

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

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. These drawings are used to explain technical features that can be adopted by the present invention. The configuration of the apparatus described is not intended to be limited to that, but merely an illustrative example.

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

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

  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 from the card insertion slot 9, the memory card 11 is attached to the card reader 10. The card reader 10 takes in data stored in the attached memory card 11. More specifically, the data stored in the memory card 11 includes update information such as new alarm target information (position information such as latitude and longitude, type information), and the update information is transmitted via the control unit 18. The data is stored (downloaded) in the database 19 built in the apparatus, and the data is updated.

  The database 19 can be realized by a nonvolatile memory (for example, NAND Flash memory) in 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 all of the database 19. The database 19 stores map data and information related to a certain alarm target at the time of shipment, and data and the like regarding the alarm target added thereafter are updated as described above.

  A GPS receiver 13 is disposed in the upper center of the back side of the case 2, and a microwave receiver 14 and a wireless receiver 15 are disposed beside 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 velocity measuring device. The wireless receiver 15 receives VHF and UHF band radio waves for traffic control communication. A speaker 16 is built in a predetermined position in the case 2.

  A DC jack 17 is disposed 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 the vehicle via the cigar plug cord to receive power supply.

  An acceleration sensor 22 and an atmospheric 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 to the traveling direction of the X-axis, the acceleration applied to the Y-axis in the horizontal direction, and the acceleration applied to the Z-axis in the vertical direction. As a result, the X-axis detects sudden acceleration / deceleration, the Y-axis detects a sudden handle, and the Z-axis detects a predetermined behavior of the vehicle such as climbing a step or falling into a depression. The atmospheric pressure sensor 24 measures atmospheric pressure.

  The case body 2 has an OBD adapter 21 that is detachably attached to an OBD-II (II is a Roman numeral “2”, hereinafter “OBD-II” will be referred to as “OBD2”). Is connected. The OBD2 connector is also referred to as a failure diagnosis connector, and is connected to the ECU of the vehicle to periodically output various vehicle information. Therefore, the controller 18 periodically acquires various types of vehicle information by connecting the OBD adapter 21 and the OBD2 connector on the vehicle body side.

  The vehicle information includes information on the travel distance of the vehicle, the vehicle speed of the vehicle, the injection injection time, the intake air amount, the remaining fuel, and the like. The remaining 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 remaining fuel periodically and recording the timing of the change between the previous remaining fuel and the current remaining fuel, it is consumed after the previous change occurs until the current change occurs. It can be said that the amount of fuel is 0.5 liters. In addition, there is also information that periodically outputs information on fuel consumption (information on lifetime fuel consumption, current fuel consumption, instantaneous fuel consumption, etc.).

  The OBD adapter 21 is detachably linked to a connection terminal 23 provided on the case body 2. When the vehicle information from the OBD2 connector is unnecessary, removing the OBD adapter 21 prevents the wiring from being scattered on the dashboard and the like, and the area around the radar detector becomes clear.

  The control unit 18 is a microcomputer including a CPU, a ROM, a RAM, a NAND flash memory, an I / O, and the like, and is connected to the above-described units as shown in FIG. The control unit 18 creates information to notify the driver based on information input from the various input devices (touch panel 6, GPS receiver 13, microwave receiver 14, wireless receiver 15 and the like) 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 functions of the radar detector 1 according to the present embodiment are realized by being stored in the NAND Flash memory of the control unit 18 as firmware executed by the CPU included in the control unit 18 and executed by the CPU included in the control unit 18. Firmware stored in the NAND Flash memory can be updated with new firmware stored in the memory card.

  The main information output from the output device of the radar detector 1 is alarm information for promoting safety to the driver. The alarm information is output in the following cases, for example. The control unit 18 obtains the distance between the alarm target position (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. When the distance is less than the predetermined distance, alarm information is output from the output device. 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 measurement device. Further, for example, when the wireless receiver 15 receives a predetermined radio wave, the control unit 18 outputs alarm information from the output device. The radar detector 1 makes a driver recognize a dangerous place where a traffic accident is likely to occur by outputting alarm information. Thereby, the radar detector 1 can prompt the driver to drive safely. Note that the alarm information described above is an example, and actually, various other alarm information is output to the driver. The alarm information includes, for example, visual information composed of predetermined images / videos / characters to be output to the display unit 5 and information using sound / sound to be output to the speaker 16.

  The functions of the radar detector 1 according to this embodiment are stored on the EEPROM of the control unit 18 as a program executed by the computer included in the control unit 18, and are realized by being executed by the computer included in the control unit 18. Functions realized by the computer by the program of the control unit 18 include a standby screen display function, a MAP display function, a GPS alarm function, a radar wave alarm function, a wireless alarm function, and the like.

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

  The MAP display function is a function for accessing the database 19 based on the current position detected by the GPS receiver 13 and reading and displaying the map data stored therein. In addition, the MAP display function searches the alarm target around the current position based on the position information stored in the database 19, and indicates the alarm target at a corresponding position on the map when there is an alarm target around. A function of displaying information (such as the target icon 112) in an overlapping manner is also provided. The specific display mode is as follows.

  The control unit 18 displays the current scale information (scale) in the scale display region R3 set on the left side of the main display region R1. The scale displays the distance from the vehicle position to the middle 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 detecting 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 (position along the scale display area R3) in the main display area R1 (illustrated). (Omitted), the map scale is changed 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 changed scale of the map scale, and also changes the scale information displayed in the scale display area R3.

  While executing the predetermined standby screen display function, the control unit 18 that has detected a single touch on the display unit 5 displays a predetermined menu screen. The control unit 18 that detects 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 a single touch on the display unit 5 during execution of 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 has been touched performs processing for switching to the standby screen display function.

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

  The GPS alarm function is a process executed at predetermined time intervals (1 second intervals) by an event from a timer included in the control unit 18 and 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 is displayed on the display unit 5 (for example, a schematic diagram of the alarm target, remaining distance, etc.), and the speaker 16 Is a process of outputting an approach warning sound indicating that.

  Such alarms include snoozing driving accident points, radars, speed limit switching points, control areas, inspection areas, parking monitoring areas, N systems, traffic monitoring systems, intersection monitoring points, signal ignorance suppression systems, police stations, frequent accidents Area, frequent on-board areas, sudden / continuous curve (highway), branch / merge point (highway), ETC lane advance guidance (highway), service area (highway), parking area (highway), highway Oasis (highway), smart interchange (highway), PA / SA petrol station (highway), tunnel (highway), highway radio reception area (highway), prefectural border notice, roadside station, viewpoint parking, etc. The type information of these targets, the latitude / longitude information indicating the position, and the display unit 5 A schematic diagram or photo data and audio data are stored in the database 19 in association with each other.

  The radar wave warning function is used when the microwave receiver 14 detects a signal corresponding to microwaves in a frequency band emitted from a speed measurement device (mobile radar or the like (hereinafter simply referred to as “radar”)). This is an alarm function for displaying an alarm screen 131 on the display unit 5 and outputting an alarm sound from the speaker 20. For example, when a microwave in a microwave frequency band emitted by a 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, The voice data stored in the database 19 is read out and the voice “Radar. Speed attention” is output from the speaker 16.

  The wireless alarm function is a function for issuing an alarm so that the wireless receiver 15 does not interfere with traveling or the like when a radio wave emitted by an emergency vehicle or the like is received. In the radio alarm function, the control radio, car radio, digital radio, special radio, police radio, police phone, police activity radio, wrecker radio, heli tele radio, fire helicopter radio, fire fight radio, emergency radio, expressway radio , Scan the frequency of the security radio, etc., and when the radio is received at the scanned frequency, a schematic diagram showing that the radio corresponding to the frequency stored in the database 19 for each radio type is received as an alarm screen While displaying on the display part 5, the audio | voice data memorize | stored for every radio | wireless classification in the database 19 are read, and the alarm sound which shows the radio | wireless classification from the speaker 16 is output. For example, when a control radio is received, a voice is output like “control radio. Speed attention”.

[Standby function] (Standby screen display function)
FIG. 3 shows an example of a display screen of a standby screen display function that 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.

  The display layout to be output to the display screen 30 of the display unit 5 has a graph display unit arranged in two upper and lower stages. That is, the first graph display unit 31 is disposed above the display screen 30 and the second graph display unit 32 is disposed below the display screen 30. The 1st graph display part 31 is a display area which displays the 1st information which moves in a short period with a graph. The 2nd graph display part 32 is a display area which displays the 2nd information relevant to 1st information in a period longer than the graph of 1st information with a graph. The first information and the second information are altitude information that is information for specifying the height as one of information that can change depending on the travel of the vehicle. Furthermore, the period is specified by the movement distance.

  In the graphs displayed on the graph display units 31 and 32, the horizontal axis, which is the first axis, is a distance that is an item for specifying the period, and the vertical axis, which is the second axis, is altitude. The horizontal axis of the 1st graph display part 31 was made into the past fixed period (for example, 3 km) from the present time. The horizontal axis of the second graph display unit 32 is the distance from the event occurrence to the present. In this embodiment, the event is generated when the vehicle is started (for example, the ignition key is turned on, the start switch of the electric vehicle is turned on, etc.). As a result, the control unit 18 displays the latest altitude change state on the first graph display unit 31, and displays the accumulated altitude change from the start of the vehicle to the present time on the second graph display unit 32.

  As described above, the control unit 18 displays a predetermined graph on each of the graph display units 31 and 32. The function for performing the process of displaying such a 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 at the start of the vehicle in association with the moving distance (here, distance 0 m) in the altitude history information storage unit. To do. This altitude history information storage unit is set in a predetermined storage unit such as a RAM of the control unit 18 or a NAND flash memory, or a storage area in a predetermined storage unit possessed by an in-vehicle electronic device other than the control unit 18, or software It is given as memory on the program.

  Next, the control unit 18 acquires information related to the travel distance of the vehicle as OBD information. Then, every 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 moving distance, and the altitude history. Store in the information storage unit. Thereby, the altitude history information storage unit stores and holds history information about the transition of altitude for every 10 m of travel distance from the start of the vehicle.

  The control unit 18 accesses the altitude history information storage unit, acquires predetermined history information stored and held in the altitude history information storage unit, and displays the respective graphs on the graph display units 31 and 32. Specifically, for the first graph display unit 31, information on altitudes for the past 3 km is acquired from the latest and plotted at positions corresponding to the respective altitudes on the graph. That is, in this 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 of the vertical axis from the maximum value in the extracted most recent 300 altitude data, and determines the vertical axis from the minimum value in the most recent 300 altitude data. Determine the minimum value. And the control part 18 sets the altitude corresponding to each position on a vertical axis | shaft while displaying the determined maximum value and minimum value of a vertical axis | shaft in the appropriate position of a vertical axis | shaft, respectively. Further, the control unit 18 reads the movement distance associated with the latest altitude, and displays the movement distance on the right end of the horizontal axis with a value in units of kilometer. In addition, the control unit 18 reads the movement distance associated with the 300th altitude in the past from the latest, and displays the movement distance on the left end of the horizontal axis as a value whose unit is kilometer.

  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 for the first information by arranging the acquired data of the latest 300 altitudes in time series and plotting them at positions corresponding to the altitudes on the vertical axis.

  In addition, for the second graph display unit 32, the control unit 18 is appropriately thinned out based on the number of data stored and held in the altitude history information storage unit, and is equalized from all 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 of the vertical axis from the maximum value of the 300 altitude data after the thinning extracted, and determines the vertical axis from the minimum value of the 300 altitude data. Determine the minimum value. And the control part 18 sets the altitude corresponding to each position on a vertical axis | shaft while displaying the determined maximum value and minimum value of a vertical axis | shaft in the appropriate position of a vertical axis | shaft, respectively. Further, the control unit 18 reads the movement distance associated with the latest altitude, and displays the movement distance on the right end of the horizontal axis with a value in units of kilometer. 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. And the control part 18 produces the graph about 2nd information by arranging the data of the extracted 300 heights in time series, and plotting each data in the position corresponding to the height of a vertical axis | shaft.

  The determination of the maximum and minimum values of the range on the vertical axis is such that all data is 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 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 with respect to the maximum value and the minimum value in the altitude data, or rounds up or down at a predetermined place (for example, 1 place), for example. Determine the maximum and minimum values on the vertical axis.

  The control unit 18 displays the transition of the altitude of the vehicle existing position in the first graph display unit 31 in the latest relatively short period (the movement distance of the vehicle in this embodiment). Therefore, the shape of the graph changes from moment to moment, and there is a movement, which is appropriate for displaying as a standby screen. Moreover, since it is the latest altitude transition, it is good for the user as well, because it matches the terrain that has traveled and is more interesting.

  Moreover, since the control part 18 displays the log | history of the transition of the altitude from the start of a vehicle to the present on the 2nd graph display part 32, a user understands the state of the ups and downs of the road which this time traveled at a glance. be able to. For example, it is preferable that the current traveling drive a undulating road such as a mountain road to cross a mountain, because the undulation state of the mountain that has crossed the mountain can be understood at a glance. In addition, it is not limited to crossing mountains like this, and even if the user thinks that it is a road where there is not much difference in elevation, such as in the city or on an expressway, the history from the start of driving is viewed So, for example, you can enjoy new discoveries, such as a difference in height than you expected.

  Furthermore, in the present embodiment, since the horizontal axis is the travel distance, for example, when the vehicle is temporarily stopped due to traffic jams or the like, the travel distance does not change, and thus no new position detection and altitude acquisition based on the travel distance are performed. . Therefore, since the graph display of the first graph display unit 31 and the second graph display unit 32 is not updated, for example, the display of a graph such as altitude does not fluctuate when the vehicle stops. In particular, in the present embodiment, since the movement distance is acquired from the OBD information, the presence / absence of movement and the distance can be obtained with high accuracy.

  Furthermore, in the present embodiment, a status area 33 for displaying status information is arranged on the right side of the display screen 30, and a time display area 34 is arranged on the upper right side. In this embodiment, the status information is the value of each item displayed in a graph. Here, since the items in the first graph display section 31 and the items in the second graph display section 32 are the same, the current altitude is displayed above the status area 33 and the current altitude is displayed below the status area. Display distance. This current distance is the moving distance from the start of the vehicle at the time of event occurrence. Thus, by displaying the current value as a numerical value, the user can recognize the current information as an absolute value. Furthermore, the control unit 18 displays the current time on the upper right of the display screen.

  Furthermore, in the present embodiment, since the items of the first graph display unit 31 and the items of the second graph display unit 32 are the same, for example, the first graph display unit 31 displays a zoom window for displaying data on the latest distance-altitude. Thus, the second graph display unit 32 becomes a cumulative window for displaying data on the distance-altitude of the entire run. Therefore, the user looks at the second graph display unit 32 while observing the first graph display unit 31 while magnifying and confirming the change in altitude and the change in the height difference of the most recently traveled road. The transition of altitude can be confirmed.

  Moreover, in the example shown in FIG. 3, since it is 18.5km after a driving | running | working start and the height difference of the whole process is also less than 50m, the range of the vertical axis | shaft of the 1st graph display part 31, and the 2nd graph display part There is not much difference in the range of the 32 vertical axes, and both graphs are displayed over the entire display area, and the scale of the vertical axis is substantially the same. For example, when the distance traveled further increases and the difference between the maximum value and the minimum value of the altitude increases, the range of the vertical axis of the second graph display unit 32 increases and is displayed on the second graph display unit 32. While the scale of the graph is higher for the altitude, the graph displayed on the first graph display unit 31 is a difference in elevation for the latest 3 km, so that the altitude is higher than that of the second graph display unit 32. It can be displayed in a larger size.

[Modification]
FIG. 4 shows a modification based on an embodiment in which the items of the first graph display unit 31 and the items of the second graph display unit 32 described above are the same. When the items in the first graph display unit 31 and the items in the second graph display unit 32 are the same, the graph displayed in the first graph display unit 31 is a part of the graph displayed in the second graph display unit 32. It becomes a thing corresponding to.

  Therefore, in this modified example, when displaying 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. In FIG. 4, for convenience, corresponding portions of the graph displayed on the second graph display unit 32 are indicated by solid lines, and other portions are indicated by broken lines. And actually, the control part 18 performs control which changes the display color of the part shown with the continuous line of the graph of the 2nd graph display part 32, and the part shown with a broken line, or changes brightness, for example. Further, the line type may be changed as shown. In this case, it is realized by repeating data plotted at a position corresponding to the altitude so as to be a broken line and non-displayed data not plotted in an appropriate order. Also, instead of changing the display form of the lines that make up the graph, you can change the background color, pattern, design, etc. of the graph, display lines at the boundaries, and indicate the boundaries with arrows. In addition to the above, various measures may be taken.

  This modification is preferable because it can be seen 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 can be easily understood. As the travel distance 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 travel distance becomes longer, the display mode such as color and brightness changes 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 is gradually shortened and narrowed. Even if the change is small, the change in the color of the graph appears, and the standby function is also demonstrated.

[Modified example immediately after start]
In the embodiment and the modification described above, a layout in which the first graph display unit 31 and the second graph display unit 32 are arranged vertically is adopted. And since the item of the 1st graph display part 31 and the item of the 2nd graph display part 32 were made the same, until it moves 3 km from the time of starting of a vehicle, the 1st graph display part 31 and the 2nd graph display part 32 The displayed contents are the same.

  Therefore, the control unit 18 displays the first graph until the vehicle moves 3 km from the start of the vehicle when 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 simultaneously displayed when 3 km having different display contents have elapsed, for example. In the illustrated example, as illustrated 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 using the entire vertical direction of the display screen. By doing in this way, compared with what displays two graph display parts after 3 km, a graph can be displayed in the area | region nearly twice as large as the up-down direction, and a graph can be displayed largely.

  Moreover, as shown in FIG.5 (c), after 3 km passes, both the 1st graph display part 31 and the 2nd graph display part 32 are displayed. Further, in this modified example, when switching from the display of only the second graph display unit 32 at the time of 3 km to the display of both graph display units 31 and 32, as shown in FIG. The first graph display unit 31 is instantaneously displayed in the normal display mode, and the vertical axis of the second graph display unit 32 that has been fully displayed in the vertical direction is gradually shortened. As a result, the upper part of the second graph display unit 32 and the lower part of the first graph display unit 31 are displayed in an overlapping state. And finally, as shown in FIG.5 (c), it displays by the layout which the 1st graph display part 31 and the 2nd graph display part 32 arrange | position in parallel up and down. In this way, the upper end of the second graph display section 32 is gradually moved downward to show the movement so as to gradually reduce the display area in the vertical direction. You can appeal that the display has been switched.

  By doing in this way, in this modification, since the graph display is only one immediately after the start of operation, it is possible to increase the display area / area of the graph, which is preferable because it is easy to see.

  As described above, the state of FIG. 5A may be changed to the state shown in FIG. 5C without changing the second graph display unit 32 gradually. Moreover, you may make it display the 1st graph display part 31 in the initial state shown to Fig.5 (a).

  In addition, when switching from the state shown in FIG. 5A to the state shown in FIG. 5C, the graph display unit to be displayed later (here, the first graph display unit 31) is displayed so as to zoom in as appropriate. Moreover, the display at the time of switching should be moved.

  In 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 from the current position and the alarm target information stored in the database 19 under a predetermined condition when the current position is within the parking prohibition monitoring area. In other words, for example, if the current position is within the highest priority area / priority area of the illegal parking control guidelines, it will be displayed and notified to that effect, or it will be displayed when the speed is within a certain speed within that area. Or

  5A and 5C, when a police station exists around the current position (for example, within 500 m), a police station notification mark M2 is displayed. In FIG. 5B, the current position is displayed. When there is a police box around (for example, within 500 m), a police box notification mark M3 is displayed, and the direction of the alarm object such as the police station or police box is indicated by an arrow, and the distance to the alarm object is indicated. Shown numerically.

[Modification of period]
In the embodiment and the modification described above, 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 the distance specifying the period, but the elapsed time is Also good. Furthermore, the item specifying the period that is the horizontal axis of the first graph display unit 31 and the item specifying the period that is the horizontal axis of the second graph display unit 32 may be different.

  In the embodiment and the modification described above, 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 certain period in the past.

  In the embodiment and the modification described above, the start point of the period of the second graph display unit 31 is set at the start of the vehicle as the event occurrence. However, the present invention is not limited to this, and for example, a predetermined reset instruction is accepted. It would be good if In order to accept a reset instruction from the user, for example, when the control unit 18 recognizes that the display screen of the display unit 5 has been touched based on a signal from the touch panel 6, the menu screen is displayed, and a predetermined level of the menu screen is displayed. When a reset instruction is received when a button area for reset instruction reception provided is pressed, or when a predetermined area of the standby screen shown in FIG. 3 or the like, for example, a touch in the second graph display unit 32 is detected, the reset instruction is accepted. Or better. Moreover, it is good also considering that the control part 18 detected pressing of the reset instruction | indication reception button allocated to the remote control switch.

  When the control unit 18 receives the reset instruction, for example, the control unit 18 marks the latest altitude of the altitude history information storage unit when the reset instruction is received and a moving distance associated therewith, and displays the moving distance in the second graph. The display unit 32 updates the display of each graph display unit each time it moves a predetermined distance (for example, 10 m) and records new altitude information. At this time, about the 1st graph display part 31, it is good not to clear by reception of a reset instruction | indication, but to display the altitude data for the nearest predetermined distance (for example, 3 km) as a graph.

  In addition, the graph displayed on the first graph display unit 31 may be reset in response to reception of a reset instruction. In this case, for example, the control unit 18 that has received the reset instruction erases past altitude information recorded in the altitude history information storage unit, and the altitude history at the time when the reset instruction is received is the same as when the vehicle is started. High-level information is recorded in the information storage unit and a graph is displayed on each graph display unit.

If it does in this way, the user can see the history from the arbitrary points in the middle of running. In addition, even if the vehicle is parked or stopped, a history of the entire second information over a plurality of travels can be viewed by not issuing a reset instruction. Thus, for example, when a user drives a road with ups and downs such as a mountain road and crosses a mountain, when the user wants to see the state of the ups and downs of the mountain that has crossed the mountain, the user gives a reset instruction just before entering the mountain road. In this way, the history display of the suburb portion in the city before that can be cut, and the change and transition of the altitude of the mountain portion can be seen. Also, for example, even if the vehicle is parked and stopped on a halfway along the mountain road and then restarted, if the reset instruction is not given when the vehicle is parked, the altitude corresponding to the overall undulation of the mountain part You can see the history. However, in that case, the altitude history information storage unit uses the non-volatile memory or the altitude history information storage unit stored in the altitude history information storage unit when parking or stopping by turning off the ignition switch or turning off the start button of the electric vehicle. The data regarding is backed up, and the data that was backed up at the time of start-up is set in a predetermined storage unit.
Furthermore, the present invention is not limited to accepting a reset instruction from the user, and may be accepted as a reset instruction when the state of the vehicle satisfies a preset condition.

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

[Modification of item]
In the embodiment and the modification described above, altitude is used as the item of the graph to be displayed on each graph display unit. However, the present invention is not limited to this, and may be, for example, information that can change according to the traveling of the vehicle. . Information that can change according to the traveling of the vehicle includes various information such as air pressure, water temperature in the radiator, fuel consumption, remaining fuel, speed, acceleration, and the like. The atmospheric pressure is information that changes in accordance with the displacement of the height position where the vehicle is present as it travels, and is information that identifies the displacement of the height of the vehicle. In addition, fuel consumption, speed, acceleration, etc. can be displayed as a stand-by function with a large change in the displayed graph by displaying a short-term change such as the latest situation on the first graph display unit 31. On the other hand, for example, by displaying the transition from the start of the vehicle to the present time on the second graph display unit 32, it is possible to notify the tendency of the entire change accompanying travel.

  The second axis of the graph displayed on the first graph display section and the graph displayed on the second graph display section 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 consumption, eco information, and the degree of safe driving. As for the level of safe driving, for example, the higher the number of times the acceleration exceeds the set threshold value, the lower the level of safe driving, and the higher the level of acceleration detected, the lower the level of safe driving. The fuel consumption is obtained from the travel distance and the consumed fuel. The consumed fuel is obtained from, for example, a change in remaining fuel acquired as OBD information. For example, the eco information is determined to be eco driving when the fuel efficiency is good, and is determined to be eco driving when the speed change is small, and the determination result is digitized and displayed on a graph.

  By setting the item to change according to the operation of the driver, for example, by displaying the most recent graph on the first graph display unit 31, the user can objectively determine how the driving operation of the user is. It is possible to reflect on whether or not the operation was appropriate.

In the embodiment and the modification described above, the first graph display unit 31 and the second graph display unit 32 are arranged in the vertical direction, but may be various layouts other than the horizontal layout. In the embodiment and the modification described above, 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.
Furthermore, the above-described embodiment and each modification may be combined as appropriate.

  In the embodiment and the modification described above, the radar detector of the type that is fixedly installed by attaching the bracket 3 at a predetermined position in the dashboard or other vehicle as the vehicle-mounted electronic device of the present invention has been described as an example. However, it can also be applied to mirror-type radar detectors attached to room mirrors. Furthermore, the present invention is not limited to a radar detector, and can be implemented as a function of various on-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, the apparatus includes the database 19 storing various types of information, and the control unit 18 accesses the database 19 to read out necessary information and performs various types of processing. However, the present invention is not limited thereto. There is nothing. That is, part or all of the information registered in the database 19 is registered in an 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 access the server as appropriate, acquire necessary information, and execute processing. A part or all of the control unit may be mounted on such a 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. Furthermore, the display device may use a device mounted on another in-vehicle device or vehicle.

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

Claims (4)

A first graph graph displays the acquired information in a vehicle, vehicle-mounted with a function of displaying a second graph display graph for wider period than the above for the same items as the first graph the first graph Electronic equipment,
The second graph is not displayed for a predetermined period from the start of drawing the first graph, and the second graph is displayed together with the first graph when the predetermined period elapses. In- vehicle electronic equipment. The predetermined period from the start of drawing of the first graph corresponds to an area wider than the display area of the first graph when the predetermined period has elapsed and the second graph is displayed together with the first graph. The in- vehicle electronic device according to claim 1, wherein the first graph is displayed. From the state in which the second graph is not displayed during a predetermined period from the start of drawing the first graph to the state in which the second graph is displayed together with the first graph after the predetermined period has elapsed. 3. The vehicle-mounted electronic device according to claim 1, wherein at the time of switching, the display area of the first graph is gradually reduced and the display area of the second graph is gradually increased. 4. The program for making a computer implement | achieve the function of the vehicle-mounted electronic device in any one of Claim 1 to 3.