JPH0636128B2 - Distance display device - Google Patents

Description

TECHNICAL FIELD The present invention relates to a distance display device for measuring and displaying the length of a curve on a map.

[Prior Art] A Kilby meter is well known as a distance display device as described above. This is so that if you follow a desired route on the map while rolling a small wheel at the tip, the needle on the dial will show the length of that route.

[Problems of conventional technology]

The above-mentioned quilby meter can easily measure the curved distance on a flat land, but it cannot accurately measure the curved distance on a terrain with a large change in altitude, such as a mountain road, let alone the state of the change in altitude, that is, the inclination angle. It was impossible to display etc.

For example, when climbing a mountain, there are many slopes,
You cannot always walk at a constant speed like on flat ground, and the walking speed greatly depends on the degree of inclination. Therefore, in climbing or the like, information regarding the state of altitude change is particularly necessary when planning the time. However, the above-mentioned Kilby meter could not satisfy this need at all.

[Object of the Invention]

In view of the above-mentioned conventional problems, it is an object of the present invention to provide a distance display device capable of displaying a state of altitude change on a map.

[Main points of the invention]

In order to achieve the above-mentioned object, the present invention makes it possible to display a cross-section of a route by combining distance data and data relating to changes in altitude obtained from contour lines, for example.

Example of Invention

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

FIG. 2 is an external view showing a digital electronic timepiece to which an embodiment of the present invention is applied. In the figure, a display unit 2 composed of a liquid crystal display device is provided on the upper surface of a watch case 1 of an electronic timepiece, and as described later in detail, in addition to time, distance, scale, cross-sectional shape, etc. can be switched and displayed. Has become. On the left side of the watch case 1, an altitude lowering switch S ₁ , a scale changing switch S ₄ and an altitude increasing switch S ₂ are provided from above, while on the right side a crown 3 and a mode changing switch S ₅ are provided. There is.

3 and 4 show the structure of the crown 3 and its vicinity. Between the axis 4 of the crown 3 and the watch case 1,
A waterproof packing 5 is interposed, a gear 6 is fitted in the watch case 1 of the shaft 4, and the gear 6 has a peripheral surface of 8
The individual protrusions 7 are provided at equal intervals.

On the other hand, in the watch case 1, a circuit board 8 having the above-mentioned display unit 2 and the like mounted on its upper surface is built. A notch 9 is formed at the end of the circuit board 8 facing the crown 3, and the gear 6 can move in the notch 9 according to the pulling out of the crown 3.

An addition electrode 10 and a subtraction electrode 11 are formed on the upper surfaces of both corners of the entrance of the cutout 9. Further, on the addition electrode 10 and the subtraction electrode 11, L-shaped elastic switch plates 12 and 13 are provided so as to be separable from each other. The switch plates 12 and 13 have L-shaped one ends fixed to the circuit board 8 and the other ends extending toward the peripheral surface of the gear 6. The gear 6 rotates and the switch plates 12, 1
When the projection 7 pushes down the tip of 3, the L-shaped bent portion comes into contact with the addition electrode 10 and the subtraction electrode 11, respectively. These electrodes 10, 11 and switch plates 12, 13 constitute a distance measuring switch S ₃ .

Next, the circuit configuration of this embodiment will be described with reference to FIG.

In the figure, the oscillator circuit 21 outputs a clock pulse having a reference frequency. This clock pulse is converted into a 1 Hz signal of 1 pulse per second by the frequency dividing circuit 22,
Further, this 1 Hz signal is counted by the time counting section 23,
Time data such as hours, minutes, seconds, months, days, years, and days of the week is output.

The five switches S _{1 to} S ₅ are the same as those shown in FIGS. 2 and 4, that is, S ₁ is an altitude lowering switch, S ₂ is an altitude increasing switch, S ₃ is a distance measuring switch, S ₄ Is a scale changeover switch, and S ₅ is a mode changeover switch. The altitude lowering switch S ₁ is an AND circuit 24, 2
6 and the altitude increase switch S ₂ is connected to the input terminals of the AND circuits 25 and 27. The addition electrode 10 and the subtraction electrode 11 of the distance measurement switch S ₃ are connected to the input terminals of the AND circuits 28 and 29, respectively, and the scale changeover switch S ₄ is connected to the input terminal of the AND circuit 30. The mode changeover switch S ₅ is the display mode changeover unit 3
It is input to 1.

Display mode switching unit 31 is for switching the display mode of the display unit 2, each time the mode switch S ₅ is turned on, turn signals from the terminals "0", "1", "2" Is output. These terminals "0", "1", "2"
The output signals from the gate circuits 32, 34 and 3 are respectively
3 is applied as a gate signal to open them. Further, the output signal from the terminal "1" is sent to each input terminal of the AND circuits 26, 27, 28, 29, 30 and the output signal from the terminal "2" is AND circuit 2.
It is sent to the input terminals 4 and 25 and the rising edge detection circuit 35.

The output signal of the AND circuit 30 is input to the scale counter 36. This scale counter 36 is an n-ary ring type counter, and for example, every time the output signal of the AND circuit 30 is input, for example, 120,000 / 10,000, 15,000 / 10,000, or 150,000 / 10,000. Each scale data such as No. 1, ... Is output.

The output signals of the AND circuits 28 and 29 are input to the + terminal and-terminal of the arithmetic circuit 37, respectively. The arithmetic circuit 37 is connected to the AND circuits 28 and 29 from the + terminal or −.
Each time a signal is given to the terminal, a data value proportional to the scale data output from the scale counter 36 is added to or subtracted from the distance data in the distance register 38, and the result data is written in the distance register 38 again. .

The output signals of the AND circuits 26 and 27 are sent to the RAM control unit 40 via the OR circuit 39. The RAM control unit 40 is provided with RA every time a signal is sent from the OR circuit 39.
The distance data in the distance register 38 is sequentially written in each memory of M41. At this time, a flag "1" is set as altitude data for the distance data written in the RAM 41 when a signal is output from the AND circuit 27, and "0" is set otherwise.

When the display mode switching unit 31 outputs a signal from the terminal “2”, the rising edge detection circuit 35 detects this rising edge and sends a detection signal to the RAM control unit 40. Upon receiving this detection signal, the RAM control unit 40 receives all the data in the RAM 41, that is, the distance data written in each memory and the altitude data (flag "1",
“0”) is read. Further, output signals from the AND circuits 24 and 25 are also sent to the RAM control unit 40.
The RAM control unit 40 also receives a signal from the AND circuit 25. The RAM control section 40 reads out partial data in the RAM 41 in the written order each time the signal from the AND circuit 25 is sent, and on the other hand, each time the signal from the AND circuit 24 is sent, the partial data is read. Data is read in the reverse order in which it was written.

The pattern creating unit 42 creates tilt data, that is, cross-sectional data, based on the distance data and the altitude data read from the RAM 41.

The time data output by the time counting unit 23, the cross-sectional data created by the pattern creating unit 42, the distance data output by the distance register 38, and the scale data output by the scale counter 36 are stored in the display mode switching unit 31. Based on the gate signals from the terminals, the gate circuits 32 and 3 are respectively
It is selectively sent to the decoder driver 43 via 3, 34. The decoder driver 43 decodes each of the above decoders and causes the display unit 2 to display the time, cross section, distance, or scale in numerical values.

Next, the operation and operation of the present embodiment having the above configuration will be described.

Now, it is assumed that the gate signal is output from the terminal "0" of the display mode switching unit 31. Then, when the time data from the time counting unit 23 passes through the gate circuit 32, the date and time is displayed on the display unit 2 as shown in FIG.

To perform a distance measurement such as a map from this state, firstly by turning on the mode switch S _5, in turn causes the output signal from the terminal "1" of the display mode switching unit 31. Then, when the distance data from the distance register 38 and the scale data from the scale counter 36 pass through the gate circuit 34,
On the display unit 2, the measured distance and scale are displayed as shown in FIG. 5 (b). However, this distance is zero before the distance is measured. Accordingly, while viewing the display unit 2, the scale data of the scale counter 36, so as to have the same value as the scale of the map to be measured, a scale changeover switch S ₄ by a predetermined number of times on which switch setting.

Next, pull out the crown 3 to the maximum as shown in FIG. 3, and press the crown 3 against the map as shown in FIG. 6, for example, and follow the route A to be measured, as shown in FIG. 2 or FIG. Roll in the indicated + direction. Then, the gear 6 also rotates together with the crown 3, the protrusion 7 of the gear 6 pushes down the switch plate 12, and the switch plate 12 contacts the summing electrode 10 each time. That is, in FIG. 1, the distance measuring switch S ₃ is turned on to the + side for the number of times of the contact, and the ON signal is sent to the + terminal of the arithmetic circuit 37 via the AND circuit 28.

Then, in the arithmetic circuit 37, a value proportional to the scale data from the scale counter 36 is added to the distance data (0 at the beginning) from the distance register 38, for example, if it is 1 in 25,000, 150,000 If it is 1, the value of 4 is added if it is 1 / 1200,000, and this total is rewritten to the distance register 38. After that, each time an ON signal is input to the + terminal, the contents of the distance register 38 are rewritten to the added value. At this time, the increasing distance data in the distance register 38 is decoded by the decoder driver 43 via the gate circuit 34 and sequentially displayed on the display unit 2. Thus, when the end point of the route A in FIG. 6 is reached, the display distance at that time becomes the distance of the route A.

If you make a mistake in the route during measurement, set the crown 3 to the second
It is sufficient to reverse the original route while rolling in one direction shown in the figure or FIG. Then this time, gear 6
Rotates in reverse with the crown 3, the switch plate 13 is pushed down, and contacts the subtraction electrode 11. That is, in FIG. 1, the distance measuring switch S ₃ is turned on to the − side, and the ON signal is sent to the − terminal of the arithmetic circuit 28 via the AND circuit 29. Therefore, the arithmetic circuit 37 subtracts the amount of backward movement from the distance data of the distance register 38,
That is, the wrong distance is subtracted.

Next, an operation for displaying the cross section of the route will be described.

As shown in FIG. 6, when contour lines are drawn on the map, the contour lines are crossed several times in the process of rolling the crown 3 along the route A as described above. . Therefore, every time the contour line is crossed, if the contour line shows a higher altitude than the previously crossed contour line, the altitude increase switch S ₂ is turned on. The switch S ₁ is turned on. Then, the ON signals of the altitude increase switch S ₂ and the altitude decrease switch S ₁ are sent to the RAM control unit 4 via the AND circuits 26 and 27 and the OR circuit 39.
Sent to 0. The RAM control unit 40 writes the distance data of the distance register 38 into each memory of the RAM 41 at the same time as receiving the ON signals as described above.
Flags "1" with respect to the distance data written by the ON signal of the high rise switch S _2. Therefore, RA
In M41, the distance data for each contour line and the altitude data (flags "1", "0") indicating the change in altitude are written.

When displaying the cross-sectional shape of these elevation data and distance data from path A is turned on the mode switching switch S ₅ again, to output a signal from the terminal "2" of the display mode switching unit 31. Then, the rising edge of this signal is detected by the rising edge detection circuit 35, the detection signal is sent to the RAM control section 40, and all the data in the RAM 41 is read out to the pattern forming section 42. In the pattern creation unit 42, the RAM
By obtaining altitude data and distance data from 41,
Since it is possible to know how much the altitude rises or falls with respect to what distance, the inclination state between each contour line is patterned and output as sectional data. This cross-section data is decoded by the decoder driver 43 via the gate circuit 33, and as shown in FIG.
Is displayed in full.

Next, when it is desired to partially display the cross-sectional data sequentially, the altitude increasing switch S ₂ is turned on with the display mode switching unit 31 being kept as it is, and the ON signal is RAM controlled via the AND circuit 25. Sent to section 40. Then, the first partial data is sent from the RAM 41, and is similarly output as the sectional data by the pattern creating section 42, and the partial sectional display as shown in FIG. 5D is performed. If you want to see the next cross-section, turn on the altitude increase switch S ₂ to turn on Fig. 5 (e), (f),
Cross-sections can be displayed in the order shown in (g). If you want to reverse the cross-sectional display like this, you can turn on the altitude lowering switch S _{1 one} by _one, and
It can be displayed in the order of (g), (f), (e), and (d).

In the above embodiment, the crown 3 is used as the rolling element and the crown 3 is pulled out to measure the distance. However, the crown 3 is formed into a disk shape so that the crown 3 is partially exposed laterally. However, any point is acceptable as long as it can be converted into distance data by moving on the map.

Further, in the above embodiment, the flag "1" or "0" for indicating the ascending or descending slope is used for each contour line as the altitude data, but the contour line is not always required as long as it indicates a change in altitude. There is no.

〔The invention's effect〕

As described above, according to the present invention, the inclination state of a desired route on a map can be displayed in a cross section, and therefore, in mountain climbing or the like in which information regarding the state of altitude change is particularly necessary, the information can be known at a glance. Because it can be done, it is very convenient and useful.

[Brief description of drawings]

FIG. 1 is a circuit diagram showing an embodiment of the present invention, FIG. 2 is an external view of the same embodiment, FIG. 3 is a mechanical configuration diagram showing a crown and its vicinity according to the same embodiment, and FIG. 5 is a configuration diagram of a distance measuring switch according to the same embodiment, FIG. 5 is a diagram showing a display example of a display unit according to the same embodiment, and FIG. 6 is a diagram showing an example of a map to be measured. 2 ... Display unit, 3 ... Crown, 36 ... Scale counter, 37 ... Calculation circuit, 38 ... Distance register, 40 ... RAM control unit, 41 ... RAM, 42 ... Pattern creation unit, S ₁ ...... Altitude down switch, S ₂ …… Altitude up switch, S ₃ …… Distance measurement switch.

Claims (1)

[Claims] 1. A distance measuring means for calculating distance data by calculating scale data of a map and a movement amount of an arbitrary route on the map, and for crossing a contour line on the map in the movement of the arbitrary route on the map. Switch means to be operated, and distance data storage means for sequentially storing the distance data obtained by the distance measuring means every time the switch means is operated,
A distance display device comprising: altitude difference display means for displaying the altitude difference of the route based on the distance data at each contour line sequentially stored in the distance data storage means.