JP4306942B2 - Vehicle travel position simple notification device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a vehicle travel position simple notification device that is mounted on a vehicle and notifies a driver of the travel position of the vehicle.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, a car navigation device is known as a device for notifying a traveling position of a vehicle. Such a car navigation apparatus uses a so-called GPS (Global Positioning System) that receives radio waves from a plurality of satellites and calculates position information such as latitude, longitude, and altitude. Based on the position information calculated by the GPS, the current position of the vehicle is displayed on the map displayed on the display.
[0003]
When traveling, the position information of the destination is input to the car navigation device, and when the vehicle approaches the destination, the driver is notified using a voice generator or the like. Are known.
[0004]
[Problems to be solved by the invention]
However, in such a conventional device, there is a problem that the driver has to input the destination in advance and the operation is troublesome. Further, in order to display the map on the display, a display, a CD-ROM device, a processing device for displaying the current traveling position on the map, and the like are required, and there is a problem that the device configuration becomes complicated.
[0005]
An object of the present invention is to provide a vehicle travel position simple notification device that is easy to operate and that can notify that a destination has been approached even with a simple device configuration.
[0006]
[Means for Solving the Problems]
In order to achieve this problem, the present invention has taken the following measures in order to solve the problem. That is,
In a vehicle travel position simple notification device having positioning means for receiving radio waves from a plurality of satellites and calculating position information,
Storage means for storing a plurality of position information calculated by the positioning means at predetermined intervals immediately before reaching the destination;
Judging means for judging that the vehicle is approaching the destination based on whether or not the current position information calculated by the positioning means sequentially matches the position information stored in the storage means while the vehicle is traveling; ,
An informing means for informing when it is judged by the judging means that they match ,
Further, based on the collected signal, the current position information calculated by the positioning means is stored in the storage means as the destination, and the immediately preceding plurality of position information is stored in the storage means. vehicle traveling position simplified notification apparatus comprising the is it.
[0007]
The position information collecting means stores a plurality of position information at predetermined intervals based on the current position information calculated by the positioning means during traveling of the vehicle, and the plurality of position information based on the collected signal. May be stored in the storage means. The collected signal may be generated by pressing a destination switch. The plurality of pieces of position information may be position information at three locations immediately before reaching the destination.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
As shown in FIG. 1, reference numeral 1 denotes a positioning device as positioning means that receives radio waves constantly transmitted from GPS satellites (not shown) by a GPS antenna 2 and calculates position information such as the latitude, longitude, and altitude of the vehicle.
[0009]
The positioning device 1 is connected to an electronic control circuit 10, and the electronic control circuit 10 is configured with a well-known CPU 12, ROM 14, and RAM 16 as the center of a logical operation circuit, and a nonvolatile memory using an EEPROM or the like as storage means. 18, an input / output circuit 20 that performs input / output with the outside is connected to each other via a common bus 22. The input / output circuit 20 is connected to a destination switch 24, an elevated travel switch 25, an alarm 26 made up of a buzzer or a light emitter.
[0010]
The CPU 12 inputs signals from the outside such as the positioning device 1, the destination switch 24, the elevated travel switch 25, etc. via the input / output circuit 20. On the other hand, the CPU 12 outputs a drive signal from the input / output circuit 20 to the alarm device 26 based on these signals, data in the ROM 14 and RAM 16 and a control program stored in advance, and approaches the destination to the driver. Inform you.
[0011]
Next, the control process performed in the electronic control circuit 10 will be described with reference to the flowcharts of FIGS. First, in the position information collection process shown in FIG. 2, the position information N0 output from the positioning device 1 indicating the current running position of the vehicle is read via the input / output circuit 20 (step 100).
[0012]
Next, it is determined whether or not the destination switch 24 has been pressed and a collected signal has been input (step 110). When the destination switch 24 is not pressed, it is determined whether or not there is a change between the position information N0 read this time by the processing of step 100 and the position information stored in the address 0 of the RAM 16 (step 120). Whether there has been a change is determined when there is a difference between the two pieces of position information that is set in advance at a predetermined interval, for example, about 300 m or 500 m.
[0013]
When there is no change, this control process is once ended, and this control process is repeatedly executed at regular intervals. When there is a change, the contents of the second address in the RAM 16 are shifted to the third address (step 130). Next, the contents of address 1 of RAM 16 are shifted to address 2 (step 140), and the contents of address 0 of RAM 16 are shifted to address 1 (step 150). Then, the new position information N0 is stored at address 0 of the RAM 16 (step 160). In the present embodiment, the position information stored in the third address of the RAM 16 is erased by executing the process of step 130.
[0014]
Therefore, when the vehicle travels in the up lane toward the destination as shown in FIG. 6 by executing the position information collection process, the position information N0-3 is first stored in the 0 address of the RAM 16. . Then, when the predetermined time has passed, the position information N0-3 is shifted to the first address of the RAM 16, and the new position information N0-2 is stored at the zeroth address.
[0015]
Subsequently, when the vehicle further advances by a predetermined interval, the position information N0-3 is shifted to the second address of the RAM 16, the position information N0-2 is shifted to the first address of the RAM 16, and the new position information N0-1 is stored at the zero address. Is done. When the process further proceeds, as shown in FIG. 4, the position information N0-3 is shifted to the third address of the RAM 16, the position information N0-2 is shifted to the second address of the RAM 16, and the position information N0-1 is shifted to the first address of the RAM 16. The new location information N0 is stored at address 0.
[0016]
If this position information collection process is repeatedly executed and it is determined by the execution of the process of step 110 that the destination switch 24 is pressed and a collection signal is issued, the position information N0 at that time is stored in address 0 of the RAM 16. (Step 170). Then, the position information N0 to N0-3 stored at addresses 0 to 3 of the RAM 16 is stored in the nonvolatile memory 18 (step 180).
[0017]
In this embodiment, when the destination switch 24 is pressed and the elevated travel switch 25 is depressed, it is determined that the vehicle is traveling on the elevated road, and information to that effect is stored in the nonvolatile memory 18. Remember. As a result, when the road is an elevated road and a road under the elevated, and is parallel, the position information from the positioning device 1 is used when it is not possible to determine which road is running. .
[0018]
Then, each time the destination switch 24 is pressed by the driver by repeatedly executing this position information collection process, the position information N0 at that time and a plurality of position information immediately before that, the three positions immediately before in this embodiment. The position information N0-1 of the first approach position, the position information N0-2 of the second approach position, and the position information N0-3 of the third approach position are stored in the nonvolatile memory 18 and collected for a plurality of destinations. . In the present embodiment, the subscript 0 indicates the current position information, and the subscripts 1, 2,... K,... N indicate the position information collected in the past.
[0019]
Next, a notification control process for notifying the driver that the vehicle is approaching the destination will be described using the position information N0 to N0-3. As shown in FIG. 3, the current position information N0 read by the process of step 100 is compared with the position information Nk-3 of the third approach position among the position information stored in the nonvolatile memory 18, It is determined whether there is the same position information (step 200).
[0020]
When there is no same position information, the process of step 200 is repeated, and when there is the same position information as the third approach position, the current position information N0 read by the process of step 100 and the nonvolatile memory 18 are stored. The position information Nk-2 of the second approach position is compared among the detected position information, and it is determined whether there is the same position information (step 210).
[0021]
As shown in FIG. 6, the current position information N0 read by the processing of step 100 is updated as the vehicle travels in the up lane. After the current position information N0 coincides with the position information Nk-3 of the third approach position stored in the non-volatile memory 18, when the vehicle further proceeds to the second approach position, the current position information N0 becomes the second approach position. The position information Nk -2 sequentially matches the position information.
[0022]
It is determined that the traveling vehicle has passed the third approach position and reached the second approach position toward the destination Nk. At that time, a driving signal is output to the alarm 26 to notify the driver that the vehicle is approaching the stored destination (step 220). If the vehicle is traveling in the down lane, it is determined by the processing of step 210 that they do not match.
[0023]
Next, it is determined whether or not the current position information N0 stored at address 0 of the RAM 16 is the same as the position information Nk-1 of the first approach position stored in the nonvolatile memory 18 (step 230). ). If they do not match, the process waits until they match, and if they match, it is determined whether or not the current position information N0 is the same as the position information Nk of the destination stored in the nonvolatile memory 18 (step 240). If they do not match, the process waits until they match, and if they match, output of the drive signal to the alarm 26 is stopped (step 250). Thereby, until it reaches the destination from the second approach position, the alarm 26 operates to notify the driver that the destination is approaching.
[0024]
In this embodiment, the execution of the processes in steps 200 and 210 serves as a determination unit, the execution of the process in step 220 and the notification device 26 serve as a notification unit, and the execution of processes in steps 100 to 180 is performed as a position information collection unit. Work as.
The present invention is not limited to such embodiments as described above, and can be implemented in various modes without departing from the gist of the present invention.
[0025]
【The invention's effect】
As described above in detail, the vehicle travel position simple notification device of the present invention stores a plurality of pieces of position information reaching the destination, and is approaching the destination when the current position information sequentially matches the plurality of position information. Therefore, it is possible to notify the driver of the vehicle that the vehicle has approached the destination with a simple configuration without performing a complicated setting operation.
[0026]
Further, if the location information collecting means is provided, the destination can be easily collected.
[Brief description of the drawings]
FIG. 1 is a schematic configuration diagram of a vehicle travel position simple notification device as one embodiment of the present invention.
FIG. 2 is a flowchart showing an example of position information collection processing performed in the electronic control circuit of the present embodiment.
FIG. 3 is a flowchart showing an example of notification control processing performed in the electronic control circuit of the present embodiment.
FIG. 4 is an explanatory diagram illustrating storage of position information in a RAM according to the present embodiment.
FIG. 5 is an explanatory diagram illustrating storage of position information in the nonvolatile memory according to the embodiment.
FIG. 6 is an explanatory diagram illustrating a relationship between a destination during traveling of the vehicle and a first approach position to a third approach position according to the present embodiment.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Positioning device 2 ... GPS antenna 10 ... Electronic control circuit 18 ... Non-volatile memory 24 ... Destination switch 26 ... Alarm

Claims (4)

In a vehicle travel position simple notification device having positioning means for receiving radio waves from a plurality of satellites and calculating position information,
Storage means for storing a plurality of position information calculated by the positioning means at predetermined intervals immediately before reaching the destination;
Judging means for judging that the vehicle is approaching the destination based on whether or not the current position information calculated by the positioning means sequentially matches the position information stored in the storage means while the vehicle is traveling; ,
An informing means for informing when it is judged by the judging means that they match ,
Further, based on the collected signal, the current position information calculated by the positioning means is stored in the storage means as the destination, and the immediately preceding plurality of position information is stored in the storage means. vehicle traveling position simplified informing apparatus characterized by comprising a. The position information collecting means stores a plurality of position information at predetermined intervals based on the current position information calculated by the positioning means during traveling of the vehicle, and the plurality of position information based on the collected signal. The vehicle travel position simple notification device according to claim 1 , wherein the storage means stores the information. The vehicle travel position simple notification device according to claim 1 or 2 , wherein the collected signal is issued by pressing a destination switch. The vehicle travel position simple notification device according to any one of claims 1 to 3, wherein the plurality of position information is position information at three locations immediately before reaching the destination.

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