JP3462897B2 - Current position calculation display device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a current position calculation display device, and more particularly to a function of processing altitude measurement data and azimuth measurement data and displaying the current position on a liquid crystal display board based on the data processing result. .

[0002]

2. Description of the Related Art A display example of azimuth measurement data on a liquid crystal display plate of a Casio digital wristwatch (CPW100, CPW200) released in 1993 will be described with reference to FIG. 4 (CPW100 is shown in the figure). . First, when the azimuth measuring button 403 of the digital wristwatch 401 with azimuth measuring function is pressed, magnetic north is measured by the azimuth sensor 404, and after about 1 second, magnetic north is displayed on the liquid crystal display plate 402 by the magnetic north mark 405. In addition, the azimuth in the 12 o'clock direction is displayed in al-Havet (NNE in the figure). In order to confirm the current position 501 by the current position confirmation method in the conventional example shown in FIG. 5, for example, the azimuths of the peaks A and B of two mountains are measured (in the figure, WNW and N, respectively).
E), each direction is memorized, and by trigonometry, on the map,
The magnetic north marks 502 and 503 are directed to N504 and drawn. 4 and 5 are Casio's new product guide VOL. Created by extracting from 2.

[0003]

As described in the above-mentioned prior art, in order to confirm the current position by a single function of the azimuth measuring function, the triangulation method is used on the map based on the two azimuth measuring data. Since it is done by drawing in, it was troublesome work. Further, in a place where only one piece of azimuth measurement data can be obtained (for example, a place where two mountains are not found), it is difficult to confirm the current position.

The present invention has been made to solve the above problems, and an object of the present invention is to provide a function of a current position calculation display device capable of instantaneously confirming the current position by a simple operation.

[0005]

The structure of the present invention for achieving the above object is classified by altitude data, and each altitude data is further classified into direction data and coordinate data, and contour map data of mountains. A contour map data storage means for storing the data, a liquid crystal display driving means for displaying the contour map data of the mountain and the current position data on a liquid crystal display plate, an altitude measuring means for measuring the altitude of the current position, a peak of the mountain from the current position Azimuth measuring means for measuring the azimuth of the current position, the altitude measurement data of the current position, and the change based on the azimuth measurement data of the current position.
From the top of the converted mountain, the direction measurement conversion data of the current position
Data is output to the liquid crystal display driving means by comparing the altitude data and the azimuth data of the contour map data of the mountain with the liquid crystal display driving means. The contour map data of the mountain stored in the figure data storage means is displayed on the liquid crystal display plate, the altitude measuring means measures the altitude of the current position, the altitude measuring data is stored in the calculating means, and the azimuth is calculated. The measuring means measures the azimuth of the mountain top from the current position and stores the azimuth measurement data in the arithmetic means, and the arithmetic means stores the azimuth measurement data of the mountain from the current position. Converted to azimuth measurement conversion data of the current position from the top, and extracting two altitude data close to the altitude measurement data of the current position from the altitude data of the contour map data of the mountain, and then From the direction data which the are two altitude data with extracts closest orientation data to said position measurement conversion data, each altitude data the extracted,
Two pieces of coordinate data having azimuth data are extracted , the two pieces of coordinate data are arithmetically processed to calculate the current position coordinate data, the current position coordinate data is output to the liquid crystal display driving means, and the liquid crystal display drive is performed. Means displays the current position coordinate data as a current position on the liquid crystal display panel, and the computing means:
Calculating the absolute value of the difference between the two altitude data close to the altitude measurement data altitude measurement data and the current position of the current position, determine the ratio of the absolute value of the difference, the two coordinates the ratio The internal division point of the data is obtained, and the internal division point is used as the current position coordinate data.

[0006]

Embodiments of the present invention will be described below in detail with reference to the drawings. The present position display function of the present position calculation display device of the present invention will be described.

FIG. 1 is a block diagram of a microcomputer installed in the present position calculation display device of the present invention. The microcomputer 101 includes an electronic compass 104 and an electronic altimeter 10.
5. The dot matrix liquid crystal display panel 103 is connected. The microcomputer 101 is connected to a personal computer 102 and classified by altitude data 215 shown in FIG.
Each altitude data 215 further includes heading data 216,
Contour map data 2 of mountains classified into coordinate data 217
A contour map data storage means 110 for storing 12 from the personal computer 102, a liquid crystal display driving means 109 for displaying the contour map data 212 of the mountain and the current position data on the dot matrix liquid crystal display panel 103, and an altitude measurement for measuring the altitude of the current position. Means 107, azimuth measuring means 106 for measuring the azimuth of the top of the mountain from the current position, altitude measurement data and azimuth measurement data of the current position, respectively, altitude data 215 and azimuth data 21 of the contour map data 212 of the mountain.
6 has a calculation means 108 for outputting the current position data obtained by the comparison processing to the liquid crystal display drive means 109.

According to the flowchart of the present position display function of the present position calculation display device of the present invention shown in FIG.
The function of the microcomputer 101 will be described. First, the contour map data storage means 110 is classified by altitude data 215, as shown in FIG. 2B, and for each altitude data 215, the azimuth and coordinate data 216 with the summit of the mountain as the origin, The mountain contour map data 212 (here, the mountain top azimuth data is a dummy value) to which 217 is attached is stored from the personal computer 101. Next, the liquid crystal display drive means 109 uses the contour map data 2 of the mountain stored in the contour map data storage means 110.
12 is displayed on the dot matrix liquid crystal display panel 103 (201), then the altitude measuring means 107 measures the altitude of the current position (202), and the computing means 108.
Then, the altitude measurement data a is memorized (203), the azimuth measuring means 106 further measures the azimuth of the top of the mountain (204), and the arithmetic means 108 stores the azimuth measuring data θ _b . (205). The calculation means 108 processes the altitude measurement data a at the current position and the azimuth measurement data θ _b at the top of the mountain. Figure 2
As shown in (c), the azimuth measurement data θ _b 219 is converted into the azimuth measurement conversion data θ 220 at the current position from the top of the mountain with the top of the mountain as the origin O and the clockwise direction as positive.

## EQU1 ## θ = θ _b ± 180 ° Here, + is θ _b <180 °, and − is θ _b > 180
It is time for °.

Next, the altitude data a ₁ which is the _first closest to the altitude measurement data a is extracted from the altitude data 215a _{i by} the following equation 2.

## EQU2 ## | a−a ₁ | ≦ | a−a _i |

Next, the first closest altitude data a ₁ is represented by the mountain contour map data 212 shown in FIG. 2B,
The altitude data a ₂ close to the altitude measurement data a is extracted from the altitude data 215 obtained by adding or subtracting the altitude flaw data 213 (207).

Next, the following azimuth data θ ₁ i, which is the closest to the azimuth measurement conversion data θ 220, is extracted from the azimuth data 216 θ _{1i of} the altitude data a ₁ using the following equation 3.

[Equation 3] | θ−θ ₁ | ≦ | θ−θ _1i |

Next, the azimuth data θ ₂ closest to the azimuth measurement conversion data θ 220 is extracted from the azimuth data 216 θ _{2i of} the altitude data a ₂ using the following equation 4 (208). .

[Equation 4] | θ−θ ₂ | ≦ | θ−θ _2i |

Next, coordinate data c ₁ (x ₁ , y ₁ ) 221 corresponding to the altitude data a ₁ and the azimuth data θ ₁
From the mountain contour map data 212, and the coordinate data c ₂ (x ₂ , y ₂ ) 222 corresponding to the altitude data a ₂ and the heading data θ ₂ is extracted from the mountain contour map data 21.
2 (209), and as shown in FIG. 2 (d), when the altitude is between the altitude data a ₁ and a ₂ , the current position coordinate data is obtained assuming that the mountain has a constant inclination. That is, the calculation means is configured to measure the altitude measurement data a at the current position.
And the absolute value of the difference between the _two altitude data a ₁ and a ₂ close to the altitude measurement data at the current position, | a−a ₁ |, | a−a ₂
| Calculates interior division ratio _{(| a-a 1 | /} | a-a 2 |)
At 223, the two coordinate data c ₁ 221 and c ₂ 22
The inner dividing point of 2 is obtained, and the inner dividing point c ₀ (x ₀ , y ₀ ) is used as the current position coordinate data c ₀ 224, and the liquid crystal display means 109
The liquid crystal display drive means 109 displays the current position coordinate data c ₀ 224 as the current position on the dot matrix liquid crystal display panel 103 (211). Here, it goes without saying that the present position calculation display device of the present invention has an operation for causing the electronic azimuth meter or the electronic altimeter to function as a single function.

FIG. 3 shows an embodiment of the contour map of the mountain and the display of the current position on the dot matrix liquid crystal display panel.
On the dot matrix liquid crystal display board, the lowest contour height 308 is 400 m, and the height flaw 307 is 200 m,
The altitude 1000m summit 30 5 Mountain Mountain contour diagram 30
2 is displayed, and the mountain trail 304 is also displayed in dots based on the mountain trail data 218 of the mountain contour map data 212. Further, in FIG. 3, the current position coordinate data c ₀
(X ₀ , y ₀ ) is displayed as the current position 303 with 5 dots.

[0015]

As described in the above detailed description, according to the first aspect, the azimuth measurement data of the electronic azimuth meter and the altimeter measurement data of the electronic altimeter are automatically processed and displayed. The present position calculation display device of the present invention capable of confirming the present position is effective in enhancing the functionality of the electronic azimuth measuring device.

Further, the present position calculation display according to claims 2 and 3
According to the device , there is an effect that the current position can be confirmed accurately.

[Brief description of drawings]

FIG. 1 shows a block diagram of a microcomputer installed in a current position calculation display device of the present invention.

FIG. 2 is a flowchart of the function of the present position calculation display device of the present invention.

FIG. 3 is an example of display on a dot matrix liquid crystal display panel of the present invention.

FIG. 4 is a display example on a liquid crystal display of a conventional wristwatch with a direction measuring function.

FIG. 5 is a current position confirmation method in a conventional example.

[Explanation of symbols] 101 Microcomputer 102 PC 103 dot matrix liquid crystal display board 104 Electronic compass 105 Electronic altimeter 106 Direction measuring means 107 Altitude measurement means 108 computing means 109 liquid crystal display driving means 110 Contour map data storage means 201 Contour map data display of mountain 202 Altitude measurement 204 azimuth measurement 206 Direction measurement data conversion 207 Advanced data extraction 208 Direction data extraction 209 Coordinate data extraction 210 Current position coordinate data calculation 211 Current position display

Claims (3)

(57) [Claims] 1. A contour map data storing means for storing contour map data of mountains, which is classified by altitude data, and each altitude data is further classified into direction data and coordinate data, the contour map data of the mountains and the present Liquid crystal display driving means for displaying position data on a liquid crystal display plate, altitude measuring means for measuring the altitude of the current position, azimuth measuring means for measuring the azimuth of the top of the mountain from the current position, and altitude measurement data of the current position. , Converted based on the direction measurement data of the current position
The direction measurement conversion data of the current position is collected from the top of the mountain.
A current position calculation display device having a calculation means for outputting to the liquid crystal display drive means the current position data obtained by comparing the altitude data and the azimuth data of the contour map data of the mountains, respectively . . 2. The liquid crystal display drive means displays the contour map data of the mountain stored in the contour map data storage means on the liquid crystal display plate, and the altitude measuring means measures the altitude at the current position and The altitude measurement data is stored in a computing means, the azimuth measuring means measures the azimuth of the mountain top from the current position, and the azimuth measuring data is stored in the computing means. From the mountain top azimuth measurement data to the current position azimuth measurement conversion data from the mountain top, and from the altitude data of the mountain contour map data close to the current position altitude measurement data 2 extract the number of altitude data, then, from the orientation data with the two altitude data, extracts the closest direction data to said position measurement conversion data, each altitude data is the extracted orientation Extract two coordinate data with data
Out, and the two coordinate data to calculate the current position coordinate data and processing, the output of the current position coordinate data to the liquid crystal display driving <br/> means, the liquid crystal display drive means the current position coordinates 2. The current position calculation display device according to claim 1 , wherein data is displayed as the current position on the liquid crystal display panel. Wherein said calculating means, said calculating the absolute value of the difference between the two altitude data close to the altitude measurement data altitude measurement data and the current position of the current position, the ratio of the absolute value of the difference 3. The present position calculation display device according to claim 2, wherein an internal division point of the two coordinate data is obtained by the ratio and the internal division point is used as the current position coordinate data.