JP5740661B2 - Vehicle information display device - Google Patents

Description

  The present invention relates to a vehicle information display device that includes a display unit and gives predetermined information to a person driving a vehicle.

Tidal information, that is, low tide time and tide level, is important not only for fishermen who live in the fishery but also for those who enjoy leisure activities (eg fishing, tidal hunt, surfing, etc.) in many seas. Tidal information is not uniform throughout Japan. For example, the tidal phenomenon varies greatly depending on whether it faces the inner bay or the outer sea, and the tidal cycle varies depending on the location. For this reason, those who take a leisure at the sea would like to obtain different tide information depending on the place where the leisure takes place.
In order to easily acquire such different tide information, for example, a tide display device as in Patent Document 1 has been developed. This tide display device is a device that accurately calculates and displays the high and low tide time and tide level of the point as tide information by inputting the date and the point data inputted in advance. However, if you do not use such a device, for example, read tide information from newspapers, fishing / surfing magazines, etc. in advance and record it to obtain approximate high and low tide times and tide levels. There is also.

JP 58-146819 A

However, in Patent Document 1, it is necessary to input point data or a date, and the input operation for that is troublesome. Further, the displayed screen only shows the low tide time and tide level for the day at that point, and it was necessary for the measurer to analyze the low tide state and tide level state at the current time.
By the way, many fishing enthusiasts and surfers often travel with their own cars. The movement of the vehicle takes time, and depending on the traffic situation, the vehicle does not always arrive at the beach at the scheduled time. For this reason, the data on the low tide time and tide level obtained in advance may be greatly shifted at the time of arrival, and there is a case where the user wants to know the current low tide information and the tide level state again.
In this case, even if the tide display device as in Patent Document 1 is owned, the operation is complicated as described above, so that it is not always easy to operate in the vehicle. In addition, if the vehicle is in operation, it is not possible to easily analyze the dry state and the tide level state at the current time.
For this reason, there has been a demand for a device that can display the tide information of the area corresponding to the current position without any trouble in driving, especially when moving by a vehicle, and that the tide information reflects the current time if possible.
The present invention has been made to solve the above problems, and an object of the present invention is to provide an information display device for a vehicle in which tide information of a region corresponding to the current position is displayed on a display unit. .

In order to achieve the above object, in the first means, in the vehicle information display device mounted on the vehicle for displaying the predetermined information on the display unit, the current position acquisition means for acquiring the current position, Storage means for storing a plurality of different tide information in association with position information of measurement points at which each tide information is measured, a current position acquired by the current position acquisition means, and each position stored in the storage means The gist of the present invention is to provide a deciding means for deciding the tide information to be displayed based on the information, and to display the decided tide information on the display unit.
With such a configuration, it is possible to determine tide information to be displayed based on the current position of the vehicle and each piece of position information, and display the tide information on the display unit. Therefore, the tide information corresponding to each position information is displayed on the display unit even if the user does not input a point by himself / herself.

  Here, examples of the vehicle information display device include a radar detection device and a navigation device. The predetermined information displayed on the display unit is, for example, a radar detection device, for example, detection information indicating that a microwave oscillated from the speed measurement device has been received, or information on the speed measurement device in which the vehicle is stored in advance. For example, detection information indicating that the vehicle has approached the installation position and has been detected by a GPS (Global Positioning System) function. In the case of a navigation device, for example, map information of an appropriate route from the current position displayed on the display unit to the destination can be mentioned. As the tide information, for example, the low tide time and the tide level can be used.

  In the determining means, a plurality of tide information to be displayed may be determined, but it may be determined as one. In particular, when the size of the display unit is a small one such as 3 inches or less, it is preferable to determine one so that the visibility of tide information is good. Further, as a configuration for determining the tide information to be displayed based on the current position and each position information stored in the storage means, it may be configured as a second means described later, for example, Based on the current position and each position information stored in the storage means, it may be determined on the basis of the estimated travel time required to move between the two, and any sea (eg Japan) as the position information. It is also possible to store information on whether the current position is the ocean or the Pacific Ocean, and to determine based on which ocean the current position is close to. For example, the shortest distance or time may be determined as the tide information to be displayed.

In the second means, in addition to the first means, the determination means calculates and calculates a separation distance between the current position acquired by the current position acquisition means and the measurement points stored in the storage means. The gist is that the tide information of the measurement point closest to the current position among the measurement points is determined as the tide information to be displayed.
With such a configuration, the tide information of the measurement point closest to the current position of the vehicle can be displayed on the display unit. Therefore, the user can visually check the tide information displayed on the display unit without inputting the point by himself / herself. For example, the tide information of the area where the user's vehicle currently exists may be displayed as a default on the display unit as a standby screen. The separation distance between the current position acquired by the current position acquisition unit and each measurement point stored in the storage unit is, for example, stored as latitude and longitude of each measurement point and compared with the latitude and longitude of the current position. Then, the distance may be the straight line distance, or may be a distance based on the route search result of the road network from the current position to the measurement point by storing road network information like a navigation device, for example.

In addition to the first or second means, the third means includes time acquisition means for acquiring the current time, and the tide information is associated with the current time acquired by the time acquisition means in the display unit. The gist is that it is displayed.
In such a configuration, in addition to the action of the first or second means, the tide information is associated with the current time, so the user can acquire more specific tide information at the current time in a very short time. Can do.
Here, “displaying tide information in association with the current time” is a display that shows the low tide state corresponding to the current time and the tide level at that time. It may be a so-called analog display or a digital display for displaying numerical values. An analog display using a graph is more preferable because the transition state before and after can be understood. In addition, as a mode of “displaying tide information in association with the current time”, for example, the current time and tide information may be switched and displayed at a fixed time interval. May be displayed so that they are visible at the same time.

In the fourth means, in addition to any one of the first to third means, the tide information is always displayed on the display unit, and when the predetermined information to be notified to the user is generated, The gist is that predetermined information is preferentially displayed on the display unit.
Thus, for example, when the display unit is not used for the main function of the vehicle information display device, the tide information at the measurement point closest to the current position of the vehicle is continuously displayed on the display unit in association with the current time. Thus, if there is notification information based on the main function, the user can preferentially display it on the display unit. For example, in the case of a radar detection device, the display unit serving as the standby screen is set to such a tide information display mode, and once the speed measurement device is detected, the detection information notification mode is set. The predetermined information to be notified to the user may be generated based on, for example, a detection result of a detection unit such as a sensor provided in the vehicle information display device or a change in information acquired from the outside of the vehicle information display device. . In addition, when the generation of the predetermined information to be notified to the user is completed, it is preferable to return to the display of the tide information. The end of the generation of the predetermined information is based on, for example, the elapse of a fixed time, the detection result of a detection unit such as a sensor provided in the vehicle information display device, or a change in information acquired from the outside of the vehicle information display device. It is good to decide.

In the fifth means, in addition to any one of the first to fourth means, it is possible to switch between a tide information standby mode for displaying the tide information on the display unit and a mode other than the tide information standby mode. You may make it provide a 1st input means.
If such switching is possible, it is possible to display very general information, for example, information such as time and speed on the display unit except when going to leisure, for example, at work and on holidays The standby screen of the display unit can be switched in the case of.

In the sixth means, in addition to any one of the first to fifth means, when the current position does not exist within a predetermined distance from all the measurement points of the tide information, a plurality of the tide information is sequentially added to the tide information. The gist of this is that it is displayed on the display unit.
As a result, when the tide information that the user still needs, that is, the tide information of the destination area, cannot be determined, a plurality of tide information is displayed in order without being limited to one tide information. Therefore, in this mode, the user can easily understand that the vehicle is still at a long distance from the seaside. The order of display is not particularly limited, and the order of display may be in the order close to the current position, or in a random order. Further, the display time is very short and the tide information is not changed one after another, but it is necessary to be able to visually understand the displayed data to some extent. Nonetheless, if the interval is too long, the user may not be able to recognize that the mode has been entered. For example, about 10 seconds to 10 minutes is appropriate.

In the seventh means, in addition to the sixth means, the plurality of tide information displayed in order is the plurality of tide information existing within a certain distance from the current position or within a certain area including the current position. This is the gist.
Since the multiple tide information displayed in this order is the area around the current position, the user can easily understand that the vehicle is still far away from the seaside, and at the same time the surrounding area where the vehicle exists. It is possible to grasp general tide information.

The eighth means is characterized in that in addition to any one of the first to seventh means, a second input means for calling the tide information in an arbitrary region is provided.
As a result, for example, it is possible to display the tide information of an area as a destination at a long distance on the display unit at the intention of the user, and display the tide information of the measurement point closest to the current position by default in any area It is also possible to change to display of tide information.

In the ninth means, in addition to any one of the first to eighth means, the corresponding calendar information is displayed simultaneously with the tide information.
This is because the calendar information is an important element accompanying the tide information and is preferably displayed together with the tide information. The calendar information includes, for example, full low tide time, tide level, tide circumference, moon age, sun rise time, and the like.

In the tenth means, in addition to any one of the first to ninth means, a difference between the current atmospheric pressure obtained by the atmospheric pressure detection means and the reference atmospheric pressure at the measurement point is calculated, and the tide level obtained from the tide information When correction according to the difference is performed on the table reference plane and the correction value is added to the tide level reference plane, the current tide level value has reached a predetermined value corresponding to the storm surge attention tide level at the measurement point The gist of the invention is that the display unit is displayed to indicate that storm surge should be noted.
That is, a correction value corresponding to the current atmospheric pressure is given to the tide level table reference plane to obtain a tide level value at the current time, and whether or not the tide level is high is determined based on the tide level value. This is to alert the user when there is a possibility that a storm surge is likely to occur when the vehicle is moving near the coast or moving toward the coast. The tide information subject to such calculation may be the tide information at the measurement point closest to the current position, or the tide information displayed on the display unit in order, but this is particularly a real attention. For this purpose, it is preferable to perform the tide information at least at the measurement point closest to the current position. The reference atmospheric pressure may be acquired from time to time by communication, for example, but is preferably stored in advance in a storage unit. Moreover, it is preferable to provide a means for updating the reference atmospheric pressure stored in the storage means.

The eleventh means is characterized in that, in addition to the tenth means, the reference atmospheric pressure is an average atmospheric pressure within a predetermined period of the measurement point.
By setting the air pressure as the calculation base in this way, it is possible to calculate the sea level rise due to the decrease in air pressure. The predetermined period is preferably an average within a period that is easy to set, such as every month or every season.

The gist of the twelfth means is that, in addition to the tenth or eleventh means, the blowing correction value set for each of the measurement points according to the sea level rise due to the blowing effect is added to the correction value.
Sea level rise due to a drop in measured atmospheric pressure (rise due to suction) needs to be a correction value, but at the same time, depending on the region, there is a specific cause of sea level rise. For example, there is a rise in the sea level due to the wind blown from the offshore to the coast due to the typhoon (the rise of the sea level due to such a wind is called “breathing”). Therefore, the actual tide level can be calculated more accurately by adding the correction value to the correction value, which is the increase due to the increase. The blowing correction value may be acquired at any time by communication from the outside, for example, but is preferably stored in advance in a storage unit. Moreover, it is preferable to provide a means for updating the blowing correction value stored in the storage means.

In the thirteenth means, in addition to the twelfth means, the gushing correction value is set based on a value obtained by subtracting the correction value from a tide level deviation set for each measurement point.
The tide level deviation is the sum of the sea level rise (sucking effect) due to atmospheric pressure change and the sea level rise due to the blowing effect, and is a value that varies from measurement point to measurement point and from measurement date. The actual tide level is the sum of the estimated tide level and the tide level deviation. However, since it is actually impossible to actually measure the squirt correction value, the tide level deviation, which is the data of the past squirt correction value, is used to subtract the correction value, which is the rise in the sea level due to atmospheric pressure changes, from the tide level deviation. Based on this, the blow correction value is set.
For example, the tide level deviation due to atmospheric pressure is the atmospheric pressure (hPa) tide level deviation (cm)
・ ・
・ ・
985 xx
990 yy
995 zz
・ ・
・ ・
The tide level deviation for the atmospheric pressure is tabulated and the tide level deviation value closest to the detected current atmospheric pressure is used as the tide level deviation for calculating the blowing correction value, or the detected current atmospheric pressure is sandwiched 2 By calculating from one value and obtaining the tide level deviation value, it is possible to obtain a more accurate blowing correction value.

In the fourteenth means, in addition to any one of the tenth to thirteenth means, the correction value is given to the tide table reference plane so that the tide level value at the current time is based on the reference altitude. To do.
The standard tide level value for storm surge warnings, etc., is assumed to be the standard altitude (in Japan, the hypothetical average sea level of Tokyo Bay), which is universal and objective as information. The difference between the tide level value and the reference elevation is added as a correction value to obtain a tide level value based on the reference elevation.

In the fifteenth means, in addition to any one of the tenth to fourteenth means, the indication that the storm surge should be noted is provided with a plurality of different patterns depending on the numerical value of the corrected tide level value. The gist.
As a result, it is possible to show the user an optimal alert display according to the calculated tide level value.

  According to the inventions of the above claims, it is possible to display the tide information of the area corresponding to the current position on the display unit of the vehicle information display device without the user's operation during the movement in the vehicle. It becomes possible to grasp the tide information of the area according to its own moving point.

(A) of the radar detection apparatus of the Example concerning this invention is a perspective view from the front side, (b) is a perspective view from the rear surface. The perspective view of the remote control apparatus of the same Example. The block diagram which shows the electric constitution of an Example. Explanatory drawing which shows an example of the display of the display part which alert | reports that a target object is near. The flowchart explaining the processing operation of a controller. The flowchart explaining the processing operation of a controller. Explanatory drawing which shows an example of the display of the display part of a standby state. The flowchart explaining the processing operation of a controller. Explanatory drawing which shows an example of a display of the display part which alert | reports that there is a possibility of a storm surge. Explanatory drawing explaining the procedure which displays the tide information standby mode of arbitrary test tide stations.

Embodiments of the present invention will be described below with reference to the drawings.
FIGS. 1A and 1B are external perspective views of a radar detection device 10 as a vehicle information display device. The radar detection device 10 has a mechanism housed in a rectangular parallelepiped housing 11 serving as a main body, and is fixed on a dashboard via a mounting bracket 12 in a vehicle.
As shown in FIG. 1A, a display unit 14 is exposed in a frame-shaped front frame 13 arranged on the front surface of the housing 11 (surface facing the driver). The display unit 14 is composed of a small 2.4 inch liquid crystal display. An infrared light receiving unit 15 is formed at a lateral position adjacent to the display unit 14 of the front frame 13.
As shown in FIG. 1B, the power switch 16, the sound hole 18 for transmitting the sound of the speaker device 17 to the outside, and the insertion hole 19 for the DC power jack are provided on the rear surface of the housing 11 (the surface facing the front window). Are formed respectively. In addition, although illustration is abbreviate | omitted, in a present Example, the power supply of the main body side of the radar detection apparatus 10 shall be acquired from a cigar socket (namely, secondary battery which is a battery of a vehicle). A slot 20 for inserting an SD card as a storage medium is formed on the side surface of the housing 11.

As shown in FIG. 2, the radar detection device 10 includes a remote control device 21. The remote control device 21 includes a housing 22 having a flat and extremely thin outer shape. An infrared light emitting unit 23 is formed at the upper end of the housing 22. On the surface of the housing 22, a function button 24, a test & mute button 25, a volume up button 26, a volume down button 27, a cancel button 28, an area button 29, and a mode button 30 are formed. A holder (not shown) for accommodating a lithium battery as a power source is formed on the rear surface of the housing 22.
The function button 24 is a button for changing the standby screen and displaying the latitude / longitude of the current position. In changing the standby screen, it is possible to display the tide information standby mode, for example, on the display unit 14 or to display the clock standby mode for displaying the time by sequentially pressing the standby screen.
The test & mute button 24 can be pressed in order to confirm an alarm sound or to enter a mute mode that does not emit an alarm sound.
The volume up button 26 and the volume down button 27 are used as a setting button on a predetermined screen for changing the volume.
The cancel button 28 is a button used when registering a point to be canceled as radar information.
The mode button 30 is a button used for setting various modes.
In this embodiment, IrDA standard infrared data modulated using the remote control device 21 is wirelessly transmitted from the infrared light emitting unit 23 to the infrared light receiving unit 15 of the radar detection device 10, and settings of the radar detection device 10 as a main body are performed. Instruct the mode change.

Next, the electrical configuration inside the housing 11 of the radar detection device 10 will be described based on the block diagram of FIG. In addition, about the structure which is not directly related to this invention, it abbreviate | omits.
The controller MC as the determining means includes a position detector 31, a microwave detector 32, a wireless receiver 33, a remote control receiver 34, a memory card reader 35, an atmospheric pressure sensor 36, a database 37, the display unit 14, and the speaker device 17. Are connected to each other.
The controller MC includes a known CPU, a memory such as a ROM and a RAM, a timer, and the like. Map data is called into the ROM of the controller MC and displayed on the display unit 17 in association with the obtained target data and detection data of a speed measuring device (mobile radar or the like (hereinafter simply referred to as “radar”)). Map display program, GPS information processing program for processing GPS information received by the GPS receiver 38, microwave determination program for determining the microwave received by the microwave detector 32, and radio received by the radio receiver 33 A radio wave determination program for determining a wave, a display program for displaying tide information and calendar information of a predetermined test tide station on the display unit 17 and displaying the tide information on the tide information and the detection value of the atmospheric pressure sensor 36 Storm surge information display program for calculating and displaying on display unit 17, predetermined standby Standby screen display program for displaying a screen on the display unit 17, OS (Operation System) and various programs are stored.

The position detector 31 as the current position acquisition means includes a GPS receiver 38 as a known time acquisition means for acquiring GPS information as the core of the configuration, and the current time is determined by the GPS receiver 38 based on an instruction from the controller MC. The position of the own vehicle at is detected. The detected position information is the speed, latitude, longitude, and altitude of the vehicle. The microwave detector 32 detects a predetermined microwave from the received microwave. The radio receiver 33 detects a predetermined radio wave from the received radio wave. The remote control receiver 34 receives the infrared data output from the remote control device 21 via the infrared light receiver 15 and demodulates it. The memory card reader 35 reads data of an SD card as a memory card inserted into the inserted slot 20 or updates data of the SD card.
The database 37 is a nonvolatile memory (for example, EEPROM) in the controller MC or externally attached to the controller MC. In the present embodiment, the tide information of the test tide stations necessary for all estimations in Japan is stored in the database 37 as data. The data of each test tide station includes annual tide information (tide harmonized constant) for each test tide station, tide level deviation due to atmospheric pressure at each test tide station, tide level table reference surface of each test tide station, latitude of each test tide station, and Longitude. The calendar information is obtained by a known method from the latitude, longitude and altitude of each test tide station. Moreover, storm surge calculation data (storm surge information), which is a base for calculation when issuing a storm surge warning or warning, is set and stored for each test tide station. The storm surge calculation data is the difference between the average barometric pressure of the test tide station for the current month and the reference altitude of the reference level of the tide table (that is, the altitude based on the reference altitude), the alarm tide level and the caution tide level of the test tide station, This is the correction value for the tide stations. More specifically, the database 37 stores average atmospheric pressure for each test tide station and for each month as storm surge calculation data. Similarly, the difference from the reference altitude of the tide table reference plane is stored for each test tide station, and the warning tide level value and the caution tide level value are stored for each test tide station. These data are stored in the database 37 in the form of a table in relation to each test place. Further, the database 37 stores latitude / longitude information indicating the range of each area by dividing the whole country into a plurality of areas. It is stored in the database 37 to which area all test stations belong. For example, the test tide station in the Chubu area is n area, the test tide station in the Kansai area is n + 1 area, and so on. The database 37 stores screen data for configuring a standby screen in combination with the tide information and calendar information of the test tide station.
In this embodiment, the database 37 includes main roads, main facilities (for example, a service area, parking area, highway oasis, road station, parking lot, etc., which will be described later), main traffic systems (for example, an N system, which will be described later), The position data and the map data (schematic diagram and photograph data) of the target of the loop coil, LH system, radar-type orvis, etc. are stored in association with the audio data.

In such an electrical configuration, the controller MC executes functions such as a GPS alarm function, a radar wave alarm function, and a radio alarm function, which are basic functions of the radar detector 10. In this embodiment, the priority of each function is set in order of the radar wave alarm function, the radio alarm function, and the GPS alarm function from the highest, but the priority can be changed.
In this embodiment, the controller MC associates the current position data detected by the GPS receiver 8 every second with the detected time and speed (vehicle speed) and is connected to the memory card reader 35 as a position history. To record. This position history is a function of recording in the NMEA format, for example.

The controller MC executes the GPS alarm function at a predetermined timing (for example, at intervals of 1 second). The controller MC obtains the distance between the latitude and longitude data of the target stored in the database 37 and the latitude and longitude data of the current position detected by the GPS receiver 8, and the obtained distance is a predetermined approach distance (for example, within 1 km). ) Is displayed on the display unit 14, and at the same time, an approach warning sound indicating the fact is output from the speaker device 17.
Specific targets include snoozing driving accident points, radar, speed limit switching points, control areas, inspection areas, parking monitoring areas, N systems, traffic monitoring systems, intersection monitoring points, signal ignorance suppression systems, police Station, accident-prone area, frequent on-vehicle area, sudden / continuous curve (highway), branch / merge point (highway), ETC lane advance guidance (highway), service area (highway), parking area (highway Road), highway oasis (highway), smart interchange (highway), gas station (highway) in PA / SA, tunnel (highway), highway radio reception area (highway), prefectural border notice, road station, Viewpoint parking and the like.
For example, when approaching a service area while traveling on an expressway and determining that the acquired position information data is within a predetermined range with respect to the position of the service area of the map data, as shown in FIG. A schematic diagram or a photograph showing the relationship with the position of the camera is read from the database 37 and displayed on the display unit 14 and the voice data stored in the database 37 is read and the speaker device 17 reads, for example, “It is a highway service area” The voice notification like

  The controller MC executes a radar wave warning function based on detecting a signal corresponding to microwaves of a predetermined frequency band emitted from the radar from the microwave receiver 4. When the controller MC determines that the microwave receiver 4 has detected a predetermined microwave, the controller MC displays an alarm screen corresponding to the type of microwave on the display unit 14 and outputs an alarm sound from the speaker device 17. It is. 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 a radar stored in the database 37 is displayed on the display unit 14, and The stored voice data is read out and a voice notification such as “500m ahead H system” is given from the speaker device 17.

  The controller MC executes a radio alarm function for issuing an alarm so that the radio receiver 15 does not interfere with traveling or the like when a radio wave emitted from an emergency vehicle or the like is received by the radio receiver 15. In the radio alarm function, enforcement radio, car radio, digital radio, special radio, police radio, police phone, police 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 37 for each radio type is received as an alarm screen While displaying on the display part 14, the audio | voice data memorize | stored for every radio | wireless classification in the database 37 are read, and the warning audio | voice which shows the radio | wireless classification from the speaker apparatus 17 is output. For example, when a control radio is received, for example, a voice such as “It is a control radio. Speed attention” is output.

The controller MC executes a tide information notification function in addition to the basic functions such as the GPS alarm function, the radar wave alarm function, and the radio alarm function. An example of the tide information selection routine executed by the controller MC will be described based on the flowchart of FIG.
The controller MC executes the tide information selection routine at a predetermined timing (for example, every one minute) when the tide information standby mode is set, and when the above-described processes are not executed in the interrupt process. To do. In step S 1, the controller MC acquires the latitude and longitude data of the current position by the GPS receiver 8, and based on the data and latitude / longitude information indicating the range of each area stored in the database 37. For example, it is calculated in which area (area) such as the Chubu district or Kansai district.
Next, a test tide station belonging to the area (area) of the vehicle is selected from all test tide stations stored in the database 37 in step S2. At the same time, in step S3, the counter C stores a number L corresponding to the number of selected test stations in the area. Then, in step S4, the controller MC randomly determines the order based on the built-in random number circuit for the selected test tide station, selects the first test tide station, and calculates the latitude and longitude data of the test tide station. The distance between the two is determined from the latitude and longitude data of the current position of the vehicle. In this embodiment, all test stations are stored in the database 37 as having a considerable distance from each other, specifically, a distance exceeding 40 km. Subsequently, in step S5, the controller MC determines whether or not the obtained distance is within a predetermined approach distance (for example, 20 km).

If it is determined that the test tide station exists within 20 km from the current position, the controller MC determines the test tide station as the nearest test tide station in step S6. In step S7, the counter C is cleared, and the process proceeds to the storm surge information selection subroutine in step S8.
On the other hand, if the controller MC determines in step S5 that the test location does not exist within 20 km from the current position, the counter is decremented by 1 in step S9, and it is determined whether or not the counter is 0 in step S10. That is, it is a process of determining whether or not there is a remaining test place where the distance within the area (area) should be determined. If it is not 0, that is, if there is a test tide station in the area (area) that should be compared with the current position within 20 km, the next test tide station is selected in step S11, and the test tide station is selected. The distance between the two is obtained from the latitude and longitude data of the vehicle and the latitude and longitude data of the current position of the vehicle, and the process is shifted to step S5 again.
On the other hand, if the counter is 0 in step S10, it is determined that all test stations in the area (area) are not within 20 km from the current position, and all test stations in the area are checked in step S12. It is determined as the test place to be displayed and stored in the RAM of the controller MC.

Next, an example of the tide information selection routine and the tide display routine executed by the controller MC for multitasking will be described based on the flowchart of FIG. The controller MC executes this tide display routine at a predetermined timing (for example, when this routine is not being executed, for example, at the interval of 1 minute and when processing by another function that has performed screen rewriting is completed).
In step S21, the controller MC determines whether or not the display target test station stored in the RAM of the controller MC has selected a single test station. If it is determined that the station is a single test tide station, the tide information to be displayed is obtained from the tide information on the day of the test tide station stored in the database 37 in step S22 and the calendar information is obtained to obtain the current time and Are displayed on the display unit 14 so that the relationship of

FIG. 7 shows an example of such display on the display unit 14. As a display mode of tide information, the horizontal graph shows the full low tide time on the horizontal axis and the analog graph showing the tide level on the vertical axis is large, and the current time is digitally displayed in the lower right, and the scale corresponding to this time The line 41 is indicated by a color having a predetermined saturation (for example, red).
As a result, the tide level at the current time can be easily recognized at a glance. The name of the test tide station that was determined to be the closest to the display unit 14 at the same time, the day and night time at the measurement point, the age of the day (and the proportion of the moon at that age), and the current time tide (here Middle tide) and the current date are displayed. At the same time, at the stage of display on the display unit 14, the speaker device 17 outputs a voice “It is coast information around Otaru”.

On the other hand, if it is determined in step S21 that the test tide station to be displayed stored in the RAM of the controller MC is not a single test tide station, all the tide stations in that area stored in the database 37 in step S23 are displayed. Tidal information to be displayed is obtained from the tide information on the day of the test tide station by randomly reading the tide information on the day, and the calendar information is obtained and displayed on the display unit in order of 10 seconds so that the relationship with the current time can be understood.
As described above, if the test tide station is within 10 km from the current position in a certain area, the controller MC displays the tide information of the test tide station on the display unit 14 as a standby screen. On the other hand, if all the test tide stations in the area do not exist within 20 km from the current position, the tide information and the like of the test tide stations in the area are also sequentially displayed on the display unit 14 as a standby screen.

Next, an example of the storm surge information notification subroutine executed by the controller MC will be described based on the flowchart of FIG.
The controller MC determines in step S31 whether or not the test tide station where the tide information and the like are to be displayed on the display unit 14 in the tide information notification routine is present within 20 km and is present within 10 km. . Here, if it is determined that the distance is not within 10 km, the routine is temporarily terminated. On the other hand, if it is determined that it is within 10 km, the controller MC acquires the current atmospheric pressure of the atmospheric pressure sensor 36 in step S32, and acquires the storm surge calculation data of the test tide station that is the current display target from the database 37 in step S33. In step S <b> 34, the controller MC calculates a correction value based on the current atmospheric pressure, and adds up the blowing correction values obtained from the database 37. The blowing correction value is set based on a tide level deviation which is a unique value of each test tide station. The sum of the correction value based on the current atmospheric pressure and the correction value for blowing is preferably close to the value of the tide level deviation of the test tide station based on past data.

In step S35, the controller MC adds these correction values to the astronomical tide level (estimated tide level), and further adjusts the difference from the reference elevation of the tide level reference plane to calculate the actual tide level at the current time at the reference elevation. The reason for setting the reference elevation is that the height of the storm surge warning or national warning is the height at the reference elevation.
Then, in step S36, the controller MC determines whether or not the current tide level at the reference altitude exceeds the alarm tide level value of the test tide station. Is simultaneously displayed on the display unit 14, and at the same time, a sound saying “There is a danger of storm surge near this area” is output from the speaker device 17, and the routine is temporarily terminated.
On the other hand, if the controller MC determines in step S36 that the current tide level at the reference altitude does not exceed the warning tide level value of the test tide station, the controller MC calculates the caution tide level value of the test tide station at the reference altitude in step S38. If it is determined that it has exceeded, in step S39, a display screen of a storm surge warning is displayed on the display unit 14, and at the same time, from the speaker device 17, "Please be careful about this high tide" Is output and the routine is terminated.
Furthermore, if the controller MC determines in step S38 that the caution tide level value of the test tide station does not exceed the reference altitude, it is not necessary to issue an alarm or warning information for the storm surge as it is. Exit without changing the screen.
FIG. 9 shows an example of such display on the display unit 14. Since the current high and low tide time and tide level graphs do not make sense for the storm surge warning display mode, the characters “high tide warning” and the actual tide level at the current time at the reference altitude are displayed in digital form. indicate.

A specific example of the contents of this subroutine will be described. For example, it is assumed that “Shushi fishing port” is displayed on the display unit 14 as a current standby screen as a test tide station existing within 1 km. The above-mentioned storm surge calculation data in the database 37 when the date and current time of “Ishigo Fishing Port” is March 10, 2010 at 12:00 PM are as follows. The astronomical tide level is calculated by a known method.
・ Average pressure of Choshi fishing port stored in database 37 for the current month: 1012.3 (hPa)
・ Difference from the reference elevation of the tide table reference surface of Choshi fishing port stored in the database 37: -88 (rounded to -88.4) (cm)
-Warning tide level value of Choshi fishing port stored in database 37: 150 (cm)
・ Attention tide level value of Choshi fishing port stored in database 37: 100 (cm)
・ Blowing correction value of Choshi fishing port stored in database 37: 13 (cm)
・ Tide level at the current astronomical tide level calculated by a known method: 100 (cm)
Here, it is assumed that the current atmospheric pressure detected by the atmospheric pressure sensor 36 is 995, 6 (hPa). Then, the correction value based on the atmospheric pressure is calculated as 1012.3-995, 6 = 16.7 with respect to the average atmospheric pressure of the current month in the database 37. Here, this is rounded to 17. Then, the total correction value is set as the correction value based on blowing correction + the correction value based on atmospheric pressure = 13 + 17 = 30. Since it is calculated that 1 (hPa) = 1 cm, the tide level from the tide level table reference plane is 100 + 30 = 130 (cm). Here, the tide table reference plane is the reference plane of the “tide table” issued by the Japan Meteorological Agency, and is defined for each tide level observation point (here, the test tide station). In other words, the standard is different for each test place. However, the alarm tide level and caution level values stored in the database 37 are values based on the standard altitude, which is the national standard for height, so when evaluating storm surges, the standard altitude is used as a reference. The value must be corrected.
Therefore, when adjusting -88, which is the difference from the reference elevation of the tide level table reference surface of Choshi fishing port in the database 37, which is the difference from the reference elevation, as the correction value, the actual tide level at the reference elevation is 130 + (- 88) = 42 (cm), and the tide level value of Choshi fishing port is not reached, so in this case neither the storm surge warning nor the storm surge warning is displayed.

Next, the operation of such a radar detection device 10 will be described.
A user can display a predetermined standby screen on the display unit 14 using the function button 24 as an input means by using the remote control device 21 for the radar detection device 10. As the standby screen that can be selected by the function button 24, other standby modes for displaying tide information as described above, for example, a standby mode for displaying a clock and a standby mode for displaying the current speed can be selected.
When the user sets the tide information standby mode, the distance between the vehicle and all test tide stations in the domestic area where the vehicle is located is checked, and if the nearest test tide station is within 20 km, the test tide The tide information of the place is displayed on the display unit 14 as a standby screen. On the other hand, if any test tide station in the area is not within 20 km from the current position, the tide information and the like of the test tide station in the area are also sequentially displayed on the display unit 14 as a standby screen.
In such a standby mode, basic functions such as a GPS alarm function, a radar wave alarm function, and a radio alarm function are appropriately executed by interruption processing, and a target is displayed on the display unit 14 or voice notification is made.
Further, when there is a possibility of a storm surge when the vehicle is in an area within 10 km of a certain test tide station, a storm surge warning or a warning is displayed on the display unit 14.
Further, by combining input means such as the mode button 30, volume up button 26, volume down button 27, etc. of the remote control device 21, it is possible to display the tide information standby mode of an arbitrary test tide station. For example, in this embodiment, it is assumed that it is possible to shift to the standby selection mode by pressing and holding the function button 24 in a state where the setting for the tide information standby mode is selected. In the standby selection mode, it is possible to select an arbitrary test place by narrowing the target from the menu screen of the upper hierarchy layered as shown in FIG. In the example of FIG. 10, a case is described in which the range is narrowed in order from all over Japan and the “red feather” tide information standby mode is finally set. Menu selection on each screen is performed with the volume up button 26 and the volume down button 27 and is confirmed with the function button 24.
According to the function that can select any test tide station as such a standby screen, for example, I want to go to the seaside near “Akabane test tide station”, but it is still far away from “Akabane test tide station”. Can be arbitrarily displayed on the display unit 14 when it is not automatically displayed as a standby screen.

By configuring as described above, the following effects are exhibited in the present embodiment.
(1) The user can display tide information and the like corresponding to the current position on the display unit 14 as a standby screen without any input. In particular, if there is a test tide station within 20 km, there is a high possibility that the tide information of the test tide station is tide information required by the user, so that it is preferentially displayed on the standby screen.
Also, if there is no test tide within 20km, it is unclear from the latitude and longitude data of the current location where the coast is located, and since it is far from the coast of any region, the area where the user's vehicle belongs The tide information of the test tide station is displayed on the display unit 14 in turn as a standby screen, which allows the user to indirectly understand that it is still far from the coast.
(2) There is no test tide station within 20km, and even if it is not clear from the latitude and longitude data of the current position where the user is going to the coast, it is too far away (for example in Kyushu area) The information on the tide information of the test tide station in Hokkaido is not necessary. In this embodiment, the test tide stations are divided into predetermined areas, so there is no provision of such unnatural information, and tide information that considers the convenience of the user in a certain area where the user stays in general is real-time. Can be provided to.
(3) Since the tide information at the current time is displayed as an easy-to-understand scale line 41 in the analog graph, it becomes easier for the user to grasp the tide level at the current time even if the user is unable to concentrate on the screen. Yes.
(4) Since the danger of storm surge is notified in real time by actual atmospheric pressure or the like, the latest storm surge information can be obtained accurately. In addition, since it is reported only when it is close to the test tide station (that is, close to the sea), it is safe to know that you are close to the seaside if you indirectly receive a storm surge warning or warning. Contributes to sex.
(5) By operating the remote control device 21, it is possible to display arbitrary tide information or the like as a standby screen, so even information on a distant test tide station can be arbitrarily set as a standby screen. .
(6) The tide level calculation for judging the risk of storm surges is easy to calculate because it incorporates the concept of blowing correction value, and it is possible to calculate fairly accurately even though the amount of blowing is actually unknown. Yes, it is highly practical for storm surge information.

The present invention may be embodied in the following manner.
In this embodiment, the tide information and storm surge information are stored in the database 37. However, data is exchanged using a storage medium (for example, an SD card in this embodiment) or via communication means such as the Internet. It is also possible to adopt a configuration in which
In the above embodiment, a general test tide station is set as a source for obtaining tide information and storm surge information, but this is a facility established by the Japan Coast Guard. Facilities other than the test tide station, for example, the “test tide field” installed by the Geographical Survey Institute and the “tidal station” installed by the Japan Meteorological Agency may be used as measurement points for measuring tide information.
-In the case where only the tide information of a specific test tide station is displayed on the standby screen, it is assumed that the own vehicle exists within 20 km in the above, but this distance is not limited to 20 km. It is also possible to change the setting. Similarly, the distance for issuing the storm surge warning / warning is not limited to 10 km. For example, the distances compared in the determinations in S5 and S31 may be the same distance. For example, both may be 10 km. For example, when the processing of S31 in FIG. 8 is eliminated and only one tide information is displayed on the display unit (S6), it is determined whether or not an alarm is to be obtained by obtaining a correction value due to atmospheric pressure or blowing. Processing may be performed. Further, the corrected tide level may be displayed on the screen of FIG.
・ When tidal information of multiple test stations is displayed in order on the standby screen, the order and time can be changed as appropriate.
-There is no particular limitation on the method of making the test tide stations into multiple areas. As described above, it is possible to divide within certain administrative districts, such as the Chubu and Kansai regions, and this can be done for each prefecture. It is also possible to set the test tide station within a certain distance from the vehicle on the Sea of Japan side and the Pacific side. Further, such area formation (the processing shown by S1 and S2 in FIG. 5) is not essential. For example, a test tide station within a predetermined distance from the vehicle position may be selected as a tide gauge station belonging to the area.
The above-mentioned tide information notification routine and storm surge information notification subroutine are examples, and can be realized by other methods.
・ In the calculation of storm surge warning and warning, the above is an example, and various calculation methods are assumed. For example, the average atmospheric pressure may be a seasonal average instead of a monthly average, or a past average value or a previous year value may be used.
The blowing correction value may be stored in association with each month and the pressure zone at each test tide station, and the blowing correction value corresponding to the current pressure zone value may be used.
・ For each tide station, the difference between the warning tide level / alarm tide level and the actual tide level is safe and how much the warning is required. This value (warning margin) is stored in advance. The warning may be displayed in consideration of this value.
-It is also possible to simply issue an alarm / caution from the judgment result without displaying the tide level value on the display screen of the storm surge warning or storm surge warning. In this way, it is possible to prevent the user from feeling uncomfortable with respect to fluctuations in numerical values due to correction.
・ In the calculation of the above storm surge warning and warning, after calculating on the tide level reference plane, the relationship with the reference altitude was adjusted. .
The warning tide level / warning tide level may be stored and calculated in advance as the altitude of the tide level table reference plane.
・ In the above calculation, correction values based on the difference from the reference altitude of the tide table and the atmospheric pressure were rounded off, but it is not necessary to round off.
In the above, voice notification is performed simultaneously with an event on the display screen, but the voice notification is not necessarily required.
-The tide information displayed on the display unit 14 may be one or plural. In addition, when displaying the tide information on the display unit 14, information on which sea (eg, the Sea of Japan or the Pacific Ocean) is faced is stored, and determination is made based on which sea the current position is closer to. Alternatively, for example, the shortest distance or time may be determined as the tide information to be displayed.
Control that alternately displays tide information and other information (for example, the current time) as the default display to be displayed on the display unit 14 is also possible. Further, when the generation of the predetermined information to be notified to the user is completed, control may be performed so as to return to the display of the tide information.
-The reference atmospheric pressure may be stored in advance in addition to being acquired from the outside, and updated at any time.
The blowing correction value may be obtained by communication from the outside other than the above embodiment. In that case, it is better to update it as needed.
In addition, the present invention can be applied to a vehicle information display device other than the radar detection device, and the present invention can be freely implemented in a modified form without departing from the gist thereof.

  DESCRIPTION OF SYMBOLS 10 ... Radar detector as a vehicle information display apparatus, 14 ... Display part, 31 ... Position detector as present position acquisition means, MC ... Determination means, Storage means, Controller as time acquisition means.

Claims (15)

In a vehicle information display device mounted on a vehicle that displays predetermined information on a display unit,
Current position acquisition means for acquiring the current position;
Storage means for storing a plurality of tide information different for each region in association with position information of measurement points where each tide information is measured;
Determination means for determining the tide information used for display processing at predetermined time intervals based on the current position acquired by the current position acquisition means and the position information stored in the storage means;
A vehicle information display device, wherein display information based on the determined tide information is displayed on the display unit. The determination unit calculates a separation distance between the current position acquired by the current position acquisition unit and each measurement point stored in the storage unit, and among the calculated measurement points, the measurement point closest to the current position is calculated. 2. The vehicle information display device according to claim 1, wherein the tide information is determined as tide information used for display processing. The display unit always displays display information based on the determined tide information, and when the predetermined information to be notified to the user is generated, the predetermined information is preferentially displayed. the vehicle information display apparatus according to the so as to be displayed in the claim 1 or 2, characterized in. Provided is a tide information standby mode for displaying display information based on the tide information determined on the display unit, and a first input means for enabling switching to a mode other than the tide information standby mode. The vehicle information display device according to any one of claims 1 to 3 . When the current position does not exist within a predetermined distance from all the measurement points of the tide information , display information based on a plurality of the tide information is sequentially displayed on the display unit. Item 5. The vehicle information display device according to any one of Items 1 to 4 . Wherein the plurality of tidal information for a vehicle information display apparatus according to claim 5, characterized in that a plurality of tidal information present in a certain area including a certain distance or in a current position from the current position. The vehicular information display device according to any one of claims 1 to 6 , further comprising second input means for displaying display information based on the tide information in an arbitrary area. The vehicle information display apparatus according to any one of claims 1 to 7, characterized in that to display calendar information corresponding to the display information simultaneously with based on the tidal information.   Calculating the difference between the current atmospheric pressure obtained by the atmospheric pressure detection means and the reference atmospheric pressure at the measurement point, executing correction according to the difference with respect to the tide level reference plane obtained from the tide information, and the tide level table When the tide level value at the current time with the correction value added to the reference surface has reached a predetermined value corresponding to the storm surge attention tide level at the relevant measurement point, the display unit displays a notice that attention should be paid to the storm surge. The vehicle information display device according to any one of claims 1 to 8. The vehicle information display device according to claim 9 , wherein the reference atmospheric pressure is an average atmospheric pressure within a predetermined period of the measurement point. The correction value vehicle information display apparatus according to claim 9 or 10, characterized in that for summing the Fukiyose correction value set for each of the measurement point corresponding to the sea level rise amount due Fukiyose effect. The vehicle information display device according to claim 11 , wherein the blowing correction value is set based on a value obtained by subtracting the correction value from a tide level deviation set for each measurement point. The vehicle information display device according to any one of claims 10 to 12 , wherein a correction value is given to a tide level reference plane so that the tide level value at the current time is based on a reference altitude. The vehicle information display device according to any one of claims 10 to 13 , wherein a plurality of patterns different depending on a numerical value of the corrected tide level value are prepared for the indication that the storm surge should be noted.   The program for making a computer implement | achieve the function of the information display apparatus for vehicles in any one of Claims 1-14.

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