JPH05172579A - Course detection device - Google Patents

Abstract

PURPOSE:To exactly detect a walker's course without difficulty by detecting the azimuth of the walk from the start point in turn, calculating the distance based on the step count and step length and storing for each azimuth in turn. CONSTITUTION:Around a wrist watch body 1, a mode switch button 4, setting button 5, up button 6U, and down button 6D are arranged. The switching button 4 enables switching in usual watch mode, step setting mode, course detecting mode, navigation mode and return setting mode. Walk direction is detected in turn with an azimuth detection part 16 and the distance is calculated from the walker's step count and set step length in the distance detection means, a step count detection part 15. This azimuth and the distance for each azimuth are stored in turn in a memory means RAM 14 and the stored each azimuth and distance are indicated on a display part 2. Thus, by looking at the content indicated on the display part 2, the walker can recognize the course in azimuth and the distance.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stroke detecting device for detecting a stroke when walking.

[0002]

2. Description of the Related Art Conventionally, when it is attempted to recognize a stroke while actually walking, it is customary to store a mark during walking, measure a distance by calculation, and store this. Also, when walking in an unfamiliar place, carry a map and check the starting point on the map, then walk while looking at the map, or in some cases carry the map and magnet while looking at both. It is common practice to walk to reach the destination.

[0003]

However, pedestrians are naturally limited in memorizing landmarks and distances, and it is not possible to memorize them when the journey is long, and the distances to be memorized are calculated. Therefore, the stroke cannot be accurately detected. Moreover, when walking while carrying a map or the like, it is often experienced that the relationship between the map and the current location becomes unclear during the course of the journey. Once the relationship between the two becomes unclear, even if there is a map or a magnet, the process cannot be accurately grasped, and it is extremely complicated to detect the process by abutting the map and the magnet. Met.

The present invention has been made in view of such conventional problems, and an object of the present invention is to provide a stroke detecting device for accurately detecting the stroke of a pedestrian without any complication. Is.

[0005]

In order to solve the above-mentioned problems, in a stroke detecting apparatus according to the present invention, an azimuth detecting means for sequentially detecting the azimuths of walking from a starting point, and based on the number of steps and a stride, The distance calculation means for calculating the distance, the storage means for sequentially storing the distance calculated by the distance calculation means for each azimuth, and the display means for displaying the distance and the azimuth stored in the storage means. Further, there are provided reading means for reading the distance for each azimuth sequentially stored in the storage means in the reverse direction, and reverse azimuth calculation means for calculating the reverse azimuth of the respective azimuths. A straight line distance calculating means for calculating a straight line distance to the starting point and an azimuth calculating means for calculating the azimuth of the starting point are provided.

[0006] Further, an azimuth detecting means for sequentially detecting the azimuth of a walk from a starting point, a distance calculating means for calculating each distance based on the number of steps and a stride, and a destination in which the azimuth and distance are stored in advance. Comparing means for comparing with the azimuth and distance in the stroke of, and warning means for warning when the azimuth detected by the azimuth detecting means and the prestored azimuth do not match based on the comparison result of the comparing means. It is preferable that the warning means is provided and is configured to give a warning when the distance calculated by the distance calculation means is equal to or greater than the previously stored distance.

[0007]

In the above structure, when the user walks from the starting point while carrying the travel detecting apparatus according to the present invention, the azimuth detecting means sequentially detects the azimuth of the walking, and the distance detecting means detects the number of steps of the pedestrian. The distance is calculated based on the step length. These azimuths and distances for each azimuth are sequentially stored in the storage means, and the respective azimuths and distances stored in this storage means are displayed by the display means. Therefore, by visually confirming the content displayed on the display means, the pedestrian can recognize the travel by the azimuth and the distance. Further, by reading the distance for each azimuth sequentially stored in the storage means in the reverse direction and calculating the reverse azimuth of each azimuth, the process of returning from the arrival point to the departure point can be obtained, and the departure point can be obtained. The shortest distance to the starting point can be grasped by calculating and displaying the straight line distance and the azimuth.

When the direction and distance to the destination are stored in advance, the stored direction and distance are compared with the actual direction and distance, and the directions do not match based on the comparison result. At this time, or when the actual distance exceeds the previously stored distance, a warning is given.

[0009]

An embodiment of the present invention will be described below with reference to the drawings. In this embodiment, the present invention is applied to a wrist watch, and as shown in FIG.
A display unit 2 composed of a CD is provided, and
A recall button 3 is provided. Further, a mode switching button 4, a setting button 5, an up button 6U, and a down button 6D are provided on the periphery of the wristwatch body 1. The mode switching button 4 is operated when switching to the normal clock mode, step setting mode, stroke detection mode, navigating mode, and return setting mode, and clock → step setting → step detection → navigation is performed for each operation. Repeatedly switches from gate to return setting. In addition, the setting button 5
Is operated when switching the setting / resetting of each numerical value and inputting the start / stop of the detection. Furthermore, the up button 6U and the down button 6D are used to input numerical values,
The recall button 3 is operated when switching between straight / random in the return mode, and the recall button 3 is operated when displaying the measured and stored data on the display unit 2.

FIG. 1 is a block diagram showing a circuit configuration of the present embodiment. In FIG. 1, an oscillator circuit 8 is a circuit for generating a clock signal having a basic frequency, and the generated clock signal is output to a frequency dividing circuit 9. To do. The frequency dividing circuit 9 divides the input clock signal to generate a clock signal of 1 Hz and outputs it to the time counting circuit 10. The time counting circuit 10
It is provided with a counter for hours, minutes and seconds, measures the time signal of 1 Hz to obtain time data of hours, minutes and seconds, and outputs the time data to the CPU 11. The switch unit 12 includes the recall button 3, the mode switching button 4, the setting button 5, the up button 6U, and the down button 6D described above, and operation signals of the buttons 4 to 7 are input to the CPU 11.

The CPU 11 follows the display unit 2 according to the microprogram stored in the built-in ROM 13.
Is a central processing unit that executes a display process for, and a process of writing and reading data to and from the built-in RAM 14, and the display unit 2 is configured by the LCD or the like as described above, and each display is performed by a display signal from the CPU 11. The device is driven to display the time, distance, direction, etc. RAM14
Is equipped with a data memory that stores various set values and measured values, various registers, and a work area for other calculations.
As shown in FIG. 3 as a part thereof, there are provided a clock, a step counter, each storage area for azimuth, step length, straight, data address and the like, and a data area. In each of the storage areas, the time data from the time counting circuit 10 is stored in the clock, and the value obtained by counting the number of steps detected by the step detection unit 15 is stored in the step counter. Further, the azimuth detected by the azimuth detecting unit 16 is stored in the azimuth, and the step length stores the value of the user's stride previously input by operating the up button 6U or the down button 6D. The azimuth and distance at are stored. Further, an address for writing data is stored in the data address, and each time the azimuth changes, the azimuth before the change and the distance calculated based on the value of the step counter are correspondingly stored. In the data area, as shown in FIG. 4, the vector direction and distance,
Further, an area for storing coordinates (X, Y) representing a vector is provided.

The step number detecting unit 15 has a structure in which, for example, the vibration of the body every walking is detected and the vibration is output as the number of steps, and the azimuth detecting unit 16 has a high magnetic permeability alloy having a small horizontal component of geomagnetism. The magnetic azimuth sensor is a magnetic azimuth sensor that detects the azimuth based on the analog output voltage of the magnetic sensor coil manufactured by the manufacturer. In addition, the warning generation unit 17 is a CPU
The display unit 2 is a sounding circuit capable of generating an alarm sound in accordance with an instruction from 11, and has a configuration shown in FIG. A display area for displaying is provided.

Next, the operation of this embodiment having the above configuration will be described with reference to the flowchart showing the operation procedure of the CPU 11. That is, as shown in FIG.
The U11 determines whether or not there is a mode selection based on the presence / absence of an operation on the mode switching button 4 (SA1), and according to the mode set by the operation of the mode switching button 4, a clock (SA2) and a stride setting (SA3). ), Stroke detection (SA4), stroke setting (SA5), return setting (SA
The process corresponding to each mode of 7) is executed, and the stroke setting (S
After A5), navigation (S6) is executed. When the clock (SA2) is stored in the clock area shown in FIG. 3,
This is a normal time display process of displaying time data of minutes and seconds on the display unit 2, and the step setting (SA3) is a process of storing this in the step area of the RAM 14 when the user inputs his / her step.

In the stroke setting (SA5), while the navigation is set by operating the mode switching button 4, the direction and distance are switched by operating the setting button 5, and the up button 6U or the down button 6D is operated. This is a process corresponding to the case where the direction and the distance to reach the destination are input. The input azimuth and distance are stored in the azimuth and distance regions shown in FIG. 4, and the azimuth and distance to the destination are stored in this manner.
The navigation is executed (SA6).

FIG. 7 is a flow chart showing the details of the stroke detection (SA4). When it is determined in the flow chart shown in FIG. 6 that the stroke detection mode has been set by SA1, the CPU 11 shows the flow chart shown in FIG. To start the operation. Then, first, it is determined whether or not the setting button 5 has been pressed (SB1), and when the setting button 5 is not pressed, the standby state is maintained, and when the setting button 5 is pressed, the determination processing of SB2 and subsequent steps is started. .. That is,
The azimuth is measured by the output signal from the azimuth detector 16 (S
B2), while counting the number of steps by the output signal from the step number detection unit 15 (SB3), using this step number and the step length stored in advance, distance = step number × step length is calculated (S).
B4).

Subsequently, it is judged based on the output signal from the azimuth detecting section 16 whether or not the azimuth has changed (SB5),
If there is a change, it is considered that the traveling direction of the pedestrian who is the user carrying the wristwatch according to this embodiment has changed, and the RAM corresponding to the azimuth and distance up to this point.
The data is stored in 14 storage areas (SB6). Further, the azimuth and distance on a straight line from the starting point where the setting button 5 is pressed to the local point are calculated and stored (SB7), and the step counter is reset (SB8).

On the other hand, if there is no change in azimuth, S
Proceed from B5 to SB9 and set the direction measured in SB2 in advance to R
It is set in the azimuth area of AM14 (SB9). And
It is determined whether the setting button 5 has been pressed again (SB1
0), SB2 to SB10 until the setting button 5 is pressed
Repeat the loop. Therefore, each time there is a change in the bearing, the bearing and the distance are sequentially stored, and the bearing and the distance on the straight line from the starting point to the local point are calculated and stored.

Here, when calculating the direction and distance on a straight line from the starting point, since the data obtained by converting the vector into coordinates is stored in the data area shown in FIG. 4, the conversion formula is as follows: Is R and the azimuth is θ, Xn = Rn × cos θn + Xn−1 Yn = Rn × sin θn + Yn−1 (where n = 1, 2, ...).

The converted last coordinates, that is, the coordinates of the destination where the setting button 5 is operated again are (Xn, Y
n), the straight vector is

[Equation 1] Becomes

Therefore, at the point in time when the setting button 5 is pressed again to end the stroke detection, the straight vector obtained by the above equation in SB7 immediately before that is the azimuth and distance on the straight line from the starting point to the local point. Is stored together with the azimuth and the distance each time there is a change in the azimuth. Therefore, after reaching the destination, the recall button 3 is operated to read the stored information, and the display unit 2
By displaying on the screen, the distance from the starting point to the destination can be known not only by the direction and the distance, but also by the straight line distance and the direction on the straight line.

Next, when the return setting mode is selected by operating the mode switching button 4 in this state, the CP
U11 executes the return setting (SA7) of the flowchart shown in FIG. 6 according to the flowchart shown in detail in FIG. That is, either straight or random is set according to the operation of the up button 6U or the down button 6D (SC1). Next, it is determined whether or not the set mode is straight (SC2), and when set to straight, 180 ° is set in the straight direction.
Is added and set in the data area shown in FIG. 3 (SC3).

On the other hand, when random is set, the azimuth and distance for each azimuth change measured and stored in the stroke detection mode described above are taken out in the opposite direction (SC
4) Then, 180 ° is added to this taken-out azimuth and it is set in the data area (SC5). Therefore, this SC
4. By sequentially displaying the azimuth and distance retrieved or set in SC5 on the display unit 2, it is possible to know the azimuth from the destination to the starting point and the distance each time the azimuth changes.

When the navigation mode is selected by operating the switch button 4, the travel setting (SA5) is executed and the navigation (SA6) is executed as described above. This navigation is performed according to the flowchart shown in detail in FIG. 9, and it is first determined whether or not the setting button 5 has been pressed (SD1). When the setting button 5 is not pressed, the standby state is maintained, and when it is pressed, the determination process after SD2 is started. That is, the azimuth is measured by the output signal from the azimuth detecting unit 16 (SD2),
The number of steps is counted based on the output signal from the step number detection unit 15 (SD3), and the distance = step number × step length is calculated using this step number and the step length stored in advance (SD4).

Subsequently, it is determined whether or not the stored azimuth preset in the stroke setting of SA5 shown in FIG. 7 and the azimuth measured in SD2 of this flowchart do not match (SD5). If they do not match, the warning generator 17 is operated to generate a warning sound. If both positions do not match, it is determined whether the actual distance calculated in SD4 is equal to or greater than the distance stored in advance.
If the distance is not more than the previously stored distance,
In other words, if the azimuths match and the point where the azimuth should be changed has not yet arrived, it is determined whether or not the setting button has been pressed (SD9), and SD is set until the setting button 5 is pressed.
The determination process from 2 to SD9 is repeated.

Then, when the point where the azimuth should be changed is reached, and when the point is further exceeded, the process proceeds from SD7 to SD8 to specify the next azimuth and distance stored in advance. further,
After resetting the step counter, the warning generation unit 17 is operated to generate a warning sound (SD6), and subsequently, the determination processing from SD2 to SD9 is repeated until the setting button 5 is pressed.

Therefore, by executing the flow chart shown in FIG. 9, a warning sound is emitted when the user walks in a direction different from the prestored azimuth, or when he or she goes beyond the distance stored in each prestored azimuth. Occur. Therefore, it is possible to properly navigate to the destination by recognizing that the user is walking with a direction and a distance different from the direction of the destination due to the generation of the warning sound.

[0027]

As described above, according to the present invention, the direction of walking from the starting point and the distance calculated from the number of steps and the stride are sequentially stored. It is possible to accurately detect the travel to the ground without complication. Further, since the stored distance for each azimuth is read in the reverse direction and the reverse azimuth of the azimuth is calculated, data for returning from the destination to the starting point can be obtained. Further, since the straight line distance to the starting point is calculated, it is possible to obtain data on the shortest distance and the direction when returning from the destination to the starting point.
In addition, by displaying these distances and directions, it is possible to walk while confirming the journey from the starting point to the destination, the journey from the destination to the starting point, and the shortest distance and its direction. You can reach your destination or return to your starting point.

Further, when the azimuth stored in advance does not match, or when the user walks beyond the distance stored in advance, the warning is given. It is possible to properly navigate to the destination by recognizing that the user is walking in a direction and distance different from the direction of.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention.

FIG. 2 is an external plan view of the embodiment.

FIG. 3 is a conceptual diagram of a storage area provided in a partial area of the ROM of the same embodiment.

FIG. 4 is a conceptual diagram showing a structure of a data area in the storage area.

FIG. 5 is a plan view showing an example of a display mode of the display unit of the embodiment.

FIG. 6 is a flowchart showing an operating procedure of the CPU of the embodiment.

7 is a process of detecting stroke (SA
It is a flowchart which shows the content of 1) in more detail.

8 is a flowchart showing the details of return setting (SA7) in the flowchart of FIG. 6 in more detail.

FIG. 9 is a navigation (S
It is a flowchart which shows the content of A6) in more detail.

[Explanation of symbols]

 2 display section 3 recall button 4 mode switching button 5 setting button 6U up button 6D down button 10 CPU 14 RAM 15 step count detecting section 16 azimuth detecting section 17 warning issuing section

Claims (6)

[Claims] 1. An azimuth detecting means for sequentially detecting azimuths of walking from a starting point, a distance calculating means for calculating a distance based on a step count and a stride, and a distance calculated by the distance calculating means for each azimuth. A stroke detecting device comprising: a storage unit that sequentially stores the data. 2. A reading means for reading the distance for each azimuth sequentially stored in the storage means in a reverse direction, and a reverse azimuth calculation means for calculating a reverse azimuth of each azimuth. The stroke detection apparatus according to claim 1. 3. A straight line distance calculating means for calculating a straight line distance to a starting point based on the direction and the distance, and an azimuth calculating means for calculating an azimuth of the starting point. The described stroke detection device. 4. The stroke detection device according to claim 1, 2 or 3, further comprising display means for displaying the respective distances and directions. 5. An azimuth detecting means for sequentially detecting an azimuth of a walk from a starting point, a distance calculating means for calculating each distance based on a step count and a stride, and a destination in which the azimuth and the distance are stored in advance. Comparing means for comparing with the azimuth and distance in the travel of, and warning means for warning when the azimuth detected by the azimuth detecting means and the prestored azimuth do not match based on the comparison result of the comparing means, A stroke detecting device characterized by being provided. 6. The warning means further issues a warning when the distance calculated by the distance calculation means is equal to or greater than the previously stored distance.
The described stroke detection device.