JPS58131511A - Electronic compass - Google Patents

Abstract

PURPOSE:To display the azimuth of a moving body and to obtain functions as a compass by arranging a double-pole permanent magnet and two magnetic detectors on the moving body and supplying respectively detected outputs to a CRT. CONSTITUTION:The double-pole permanent magnet M and the magnetic detectors 2X, 2Y, are arranged on a plate 1 put on the moving body. When the moving body is rotated, the revolution angles related to the direction of the N- pole of the magnet M are outputted as waveform voltages for the revolution angles of the plate 1 from amplifiers 4X, 4Y in accordance with the output voltages of the detectors 2X, 2Y. These voltages are displayed as points on a dispaly surface 15 so that the points are rotated on a circle having a radius corresponding to the voltage amplitude of sine and cosine waves around an original point O' with the period of voltage of the sine and cosine waves.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a novel electronic compass designed to be able to determine the direction of a moving object such as an automobile.

First, the first embodiment of the present invention will be described in detail with reference to FIGS. 1 to 15. As shown in FIG. A two-pole permanent magnet having a substrate 1 on which a circular magnetic core, for example, is magnetized with an N pole and an 8-pole at positions maintaining an angular spacing of approximately 180°. M 65 is arranged. In this case, as is clear with reference to FIGS. 2 and 5, the bipolar permanent magnet M is a cylindrical body rotatably supported at the free end of a support shaft B that is planted on the substrate 1. Attached to the inner surface of the lower part of the person
, Therefore, on the substrate 1, it is rotatably arranged in a horizontal plane in a shape that always takes the north direction based on the N*ω earth's magnetism.

Also, on the substrate 1, there is a magnet that can generate an electrical output according to the direction of the two-pole permanent magnet M based on the magnetism of the two-pole permanent magnet M, that is, the direction can be rotated relative to the N & direction of the two-pole permanent magnet M. When the angle of rotation is increased, the rotation angle in that direction is represented by a waveform W of a sine wave or a cosine wave, as shown in FIG. 2@, it is possible to obtain a voltage V corresponding to the magnetism of the permanent magnet M.

Magnetic detection 55X and 5Yffi, each made of, for example, Hall effect elements 2x and 2Y, with relative predetermined orientations (in the direction of magnetic flux supply) in mutually different horizontal planes,
That is, for example, when considering the Y-axis line that is perpendicular to X*III# passing through the center of rotation of the 2+ij permanent magnet M on the substrate 1 and the Y-axis line passing through the center of rotation of the 2+ij permanent magnet M, the magnetic detectors 5X and 5Y are arranged on the They are fixedly arranged so that the angle formed by their directions is approximately 90 degrees. This field @-1 magnetic detector 5
and 5Y, i.e. Hall effect elements 2X; and 2Y, are connected to their respective pairs of current terminals 5X and 5X: and 5Y and 5Y; 6 and 6', it becomes an actuating cap, and the above-mentioned output voltages and vY are obtained between the pair of voltage terminals 7X and 7X': and 7Y and 7Y', respectively. It's something like that.

Based on the magnetism of the two-pole permanent magnet M according to the direction obtained from the 4:IN air detection 55X and 5Y, that is, the Hall effect elements 2X and 2Y, respectively, on the east side of the substrate 1 <14! Amplifiers 4X and 4Ym are arranged that can amplify the output voltage vx and ■□ as the physical output, so that the output voltage increases @! S4X
and (μ4Y, the output voltage V and the amplified output voltage V' and x of vY
I am trying to make sure that I can get both x and vj respectively. In this case, amplification @4X;
and 4Y are activated by being connected to their pairs of power supply terminals 8X and 8X'; 9X and 9X; and between 9Y and 9Y, they are respectively arranged jilOX and 10X'; and 10Y and 1
Hall effect element 2X mentioned above through 0Y'; and 2Y
The above-mentioned output voltage v1 is connected to the pair of voltage terminals 7X and 7X; and 7Y and 7Y';
and her husband between 11Y and 11Y'. The output voltage v mentioned above
x′; and vY are obtained.

On the other hand, the group @1♂ is separated on the moving body (not shown) and
A well-known oscilloscope 15ffi is arranged, having an axis input terminal 12X, a Y-axis input terminal 12Y, and a common terminal 12G common to them. In this case, the X-axis input terminal 12X of the oscilloscope 15 is connected to one of the pair of output terminals 11X and 11X' of the amplifier 54X through the wiring 14X, and the Y-axis input terminal 12Y is connected to the pair of output terminals 11Y and 11X of the amplifier 4Y through the wiring 14Y. 11Y' one 7i1
1Y, common terminal 12G is connected to amplifier 4 through wiring 14G.
It is commonly connected to the other 11X' of the output terminals 11X and 11X' of the pair of outputs 11X and 11Y' of the pair of output terminals 11Y and 11Y' of the amplifier 4Y.
When the output voltage vx' obtained from the amplification 11s4X is applied only to the X-axis input terminal 12X and the common terminal 12G of the oscilloscope 15, on the display surface 15 having the X-axis and Y-axis orthogonal coordinates.

On the X-axis, a point (beam-slot) indicating the polarity of the output voltage vx' is obtained, and the amplifier 4Y is connected only between the Y-axis input terminal 12Y and the common terminal 12G.
If the output voltage vY' obtained by Being done.

The configuration of the first embodiment of the present invention has been roughly clarified above, but to further describe the operation, the configuration described above (
, for example, the two-pole permanent magnet M61 is arranged on the substrate 1 arranged on the moving body, and the magnetic detectors 5X and 5Y, and therefore the Hall effect elements 2X and 2Y, When the moving body rotates, the magnetic detector 5X and the Hall effect element 2
The output voltage obtained between the voltage terminals 7X and 7X' of the pair of
The output voltage Vx'f)s obtained between - As shown in FIG. 5A, the moving angle is viewed by the rotating angle of the substrate 1.

The waveform Wx shown in FIG. The voltage vY is therefore obtained between the pair of output terminals 11Y and 11X' of the amplifier 4Y.
As shown in Figure B, the rotation angle length of 90 is a waveform WY having a phase difference with respect to the waveform WX of the output voltage V' shown in Figure A (the waveform WX of the output voltage vx' is a sine wave waveform). If there is, it can be obtained as a waveform of a cosine wave).

On the other hand, the point display obtained on the display surface 15 of the oscilloscope 15 shows that if a sine wave voltage is applied between the X-axis input terminal 12X and the common terminal 12G, and a sine wave voltage is applied between the Y-axis input terminal 12Y and the common terminal 12G, A voltage of a cosine wave having the same amplitude as the voltage is given, and the origin O on the display surface 15 is
' (the intersection of the X- and Y-axes) and rotates on a circle with a radius corresponding to the amplitude of the sine-wave and cosine-wave voltages with the period of the sine-wave and cosine-wave voltages.

Therefore, amplify! If the output voltages V and vYtfi obtained from 4X and 4Y are adjusted in advance so that they have approximately the same amplitude when the moving body rotates for 6 seconds, , and the direction of the magnetic detector 5X and therefore the Hall effect element 2X (as seen from the side where the magnetic flux is supplied) tIS% East (
or west), the magnetic detector 5Y and therefore the Hall effect element 2Y are oriented in some direction south (or north).61% The direction should be 65* (or north), 2
If the equal Hall effect elements 2X and 2Y are arranged on the moving body via the substrate 1, then the Hall effect elements 2X and 2Y are arranged on the moving body via the substrate 1. , if their directions are south, the output voltages V and ■Y Therefore, the output voltage v
, c' and vY' can be obtained with the maximum absolute value, but if we assume that Hall effect elements 2X and 2Y and additions 6!4X and 4Y61 are constructed to obtain 6S positive polarity, then now When viewed from the moving body 61 and the substrate 1 disposed thereon, the Hall effect element 2Y is oriented as shown in FIG.

The direction that is the south direction (at this time, the rotation angle of the moving body and therefore the substrate 1 is set during the rotation of the two-pole permanent magnet M) L? Based on the line connecting the N and S poles passing through Of-, j, =a □
o), the output voltage VY' 61
Obtained by the maximum value of f (Crl + vmlX),
On the other hand, since the output command pressure vx' is obtained at approximately zero, the point display P obtained on the display surface 15 of the oscilloscope 15 (1') is changed to an<,2tj permanent magnet M shown in FIG. 6B.
The voltages V and v centered on the origin O corresponding to the rotation center 0, '17) are obtained at the intersection of the circle R with the radius corresponding to the amplitude and the line on the positive side of the Y axis.

In addition, in a state where such a point display 6S is obtained, if the moving body is rotated tn by 45 lengths in the clockwise direction as shown in Fig. ”), the output voltage vY' is approximately V xO, 707, and the output voltage Vx61 is approximately + ax vmax As shown in Figure 7B, the circle Rt!: % The line on the positive side of the Y axis or the origin O
45 length is obtained at the intersection position of the # shape corresponding to the line that can be rotated clockwise.

Furthermore, in the state in which such a point is displayed, the moving body obtains -45V' in the clockwise direction at a value of +V as shown in Figure 8.
X The point display P obtained on the display surface 150 of the Rososcope 13 is
As shown in Figure 8B, the 90 length is a line that can be rotated clockwise with the circle R and the l5lffi origin 0 on the positive side of the Y axis as the center.
This is obtained at the intersection with the line on the positive side of the axis.

Furthermore, if such a point display is obtained and the moving body, hence the board 1 e1s, rotates 45 lengths clockwise as shown in FIG. corner
, N + 155) % Output voltage v; H approximately -V,,
axx value of 0.707, output voltage V'61 approximately +vr
r1. By obtaining X×0.707, a point display P65. obtained on the display surface 15 of the oscilloscope 15 is obtained. As shown in Figure 9B, a circular hole and a line on the positive side of the Y axis intersect with a line that can move 155° clockwise (b) centering on the origin O'. It is.

In addition, in the state where such point display is obtained, the moving body and hence the substrate 1 are shown in FIG. 10A; FIG. 11A;
As shown in the figures, if the moving object is rotated by 45 lengths in the clockwise direction (at this time, the moving body and the board 1's 1!@i'1 angle - is -, a+180+515), the output voltage vY
' and vx' are respectively approximately -v'm, x and 0; -V
m8xX O, 707 and -v'm, X x 0.707 20 and -'rrla
7 and -Vm1xxQ, 707,
Point display P obtained on the display surface 15 of the oscilloscope 15
m, as shown in FIG. 10B; FIG. 11B; FIG. 12B; and FIG. 15B, respectively.

Circumcision and m on the positive side of the Y axis are 180° centered on the origin 0;
2256; 270°; and 515° lengths are obtained at the intersection positions on the respective lines that can be rotated clockwise.

Therefore, the origin O is displayed on the display surface 15 of the oscilloscope 13.
The direction seen from the positive side of the Y-axis from 'O' is the north direction, the direction seen from the negative side is the south direction, the direction seen from the origin O' on the positive side of the X-axis is the east direction, and the direction seen from the negative side is the east direction. If we take h as the direction of the west direction and place the indications of those directions next to l, we get
Point display P currently obtained on display surface 15 of oscilloscope 15
If the direction of the moving object is obtained separately in the directions of east, west, south, north, northeast, northwest, southeast, and fI/4 west, then the direction of the moving object can be determined respectively in the east, west, south, and north. .

The direction of the moving object can be determined by assuming that the direction is northeast, northwest, southeast, or southwest.

Thus, according to the first embodiment of the invention described above.

The direction of the moving body is displayed on the display surface 15 of the oscilloscope 15.
With VT, it is possible to obtain a function as a controller, and FYJt, with 1 ton of such a machine and 1 bipolar permanent magnet M arranged on the moving body.

Two magnetic detectors 5X and 5Y arranged on the moving body,
It has a % characteristic that can be obtained with an extremely simple configuration consisting of an oscilloscope 15 supplied with n output voltages obtained from magnetic detectors 5X and 5Y.

Further, according to the first embodiment of the present invention described above, the function as a compass described above is obtained by utilizing the magnetism of the bipolar permanent magnet M, and the bipolar permanent magnet M is Since it is possible to obtain the function as large as desired (!-), the above-mentioned function as a compass can be obtained by magnetic detection 1TF5.
Even if the sensitivity of X and 5Y is not as high as 6S, or even if the moving object is tilted to a certain degree with respect to the horizontal plane, high sensitivity can be obtained. Incidentally, without using the present invention, it is possible to obtain the above-mentioned function as a compass using the earth's magnetism without using the magnetism of the bipolar permanent magnet M. It is difficult to obtain such characteristics.

Therefore, according to the above-mentioned tal fruit of the present invention [1], this
, is suitable for use when the vehicle is mounted on a moving object, such as an automobile, and the automobile is driven.

In the embodiment of the present invention described above, when the oscilloscope 15 is used and the direction of the moving object is determined based on the position where the point display P is displayed on the display surface 15. However, in the configuration described above, the oscilloscope 16 is 6 to 1S on the display surface 15 of the oscilloscope 15.
As described above in the figure, a light emitting diode D, for example, as various elements is placed at a position corresponding to the position where the dot display P is obtained.
N, DNl, DI, D, l, D.

DswtDw and DH-f's sequence together with X-Y
A coordinate display board 20 is used to replace the coordinate display plate 20, and an amplifier 4X is provided on the movable body via the substrate 1 according to the coordinate display board 20.

Shown in Figure 15A! 5 Output voltage v similar to that shown in Figure A
A detector 21X is arranged to detect the level of x, and from its output 1122X1, as shown in FIG. When a positive level greater than the level + V' at ~□ is 1, the value is "1" on the binary display, and when other levels are taken, it is 2.
The output g□ is "0" in the value display, and the output @22X2 shows that the level of the pressure Vx' is level +V' and the rotation angle # of the moving body and therefore the board 11 is #3 as shown in Fig. 15D. When taking the level of CI- with -vJ at the intermediate value 'ssw between and -3W, it is "1" on the binary display, and when taking other levels, it is "0" on the binary display.
Output Ex! However, as shown in Figure E of Figure 15, when the output line 22 0” output E
x3, and increase it via the board 1 on the moving body @
A detector 621Y is provided to detect the level of the output voltage vY' obtained from the device 4Y, and the level of the voltage v1' is detected from the output line 22Y1 as shown in FIG. Angle #6'5 When the level at the intermediate value -INm between #, l and 01 +V (m+V') is greater than the positive level Ma I Output BY of "1" in binary display, but also output @22Y
2, the level of voltage vJ is level +vY' as shown in FIG.
, l Intermediate value of the function # Teno v< Lou V (m-
Level Ill of the cabinet with V crystal)
The output BY* is "0" on the binary display when the Y level is selected, and "1" on the binary display when other levels are selected.

Furthermore, the voltage vY is generated from the output line 22Y5 as shown in @15 Figure H.
When the level of ' is level -■J, the output EY is "0" in binary display when it takes a larger negative level, and "1" when it takes other levels. @22
X1 and 22Y1 to the positive and negative polarity terminals of the diode DNm, outputs 1122X1 and 22Y2; and 22X1 and 22Y5 to the positive and negative polarity terminals of the diode D, ; and Dlm, respectively, outputs @22X2 and 22Y5; 22X
5 and 22Y5; 22X5 and 22Y2; 22X5 and 22Y1; and 22X2 and 22Y1 respectively as diode D3 s Dsw # Dw aDNW: and DN
The structure is connected to the positive and negative polarity terminals of the ta2 of the present invention, and the structure thereof is also the embodiment of ta2 of the present invention, so to speak, the second embodiment of the present invention, as described above in FIGS. 1 to 15. It is possible to obtain the same effects as in the case of the first embodiment of the present invention.

That is, the second embodiment of the present invention having the configuration described above in FIG.
In the embodiment, as described above with reference to FIGS. 1 to 15, when the output voltages ■ and vY obtained from the amplifiers 4X and 4Y, respectively, are moved by ω times of , if adjusted in advance to obtain approximately equal amplitudes,
In addition, when the magnetic detector 5X and therefore the Hall effect element 2X are oriented in the east (or west) direction,
The direction of the magnetic detector 5Y and hence the Hall effect element 2Y is south (
or north).

If the second class Hall effect elements 2X and 2Y are placed on the moving body via the substrate 1, then the Hall effect elements 2X and 2Y6g are further placed on the moving body via the substrate 1, and so on. When the direction of is south, the Hall effect elements 2X and 2Y and the amplifiers 4X and 4Y are configured to obtain the maximum positive output voltage ■ and vY. Then, if the orientation of the moving object and therefore the substrate 1 is as described above in FIG. The outputs Ex! and ET are respectively “
1" and "0", the diode DN emits light, and the orientation of the moving object and therefore the substrate 1 is changed in the same way.
Figure A; Figure 8 A: Figure 9 A; Figures 1 to 13 A;
2.A; and (JIEL 5.AGC and #CarNW閤+515 When the direction of rotation angle - of
a De and DNWfJS are those that emit light.

Therefore, on the display board 20, as in the case of FIG.

If directions such as west, south, north, etc. are displayed, the diode DN'DNl #Dm #D will be displayed on the display board 20.
sm ' Ds ' Dsw ' Dw t DNW
``In the case of emitting light separately, this means that the orientation of the moving object and hence the substrate 1 is the direction of north, northeast, east, southeast, south, southwest, west, and northwest, respectively. It is possible to determine the direction of the direction.

Therefore, the second aspect of the present invention having the configuration described above in FIG.
In this embodiment as well, the function as a compass can be obtained in the same way as in the case of the first embodiment of the present invention described above with reference to FIGS. 1 to 13.

Therefore, the two-pole permanent magnet M arranged on the moving body has such a function hS.
and two magnetic detection devices 65X and 5Y placed on the moving body.
and two level detectors 21X and 2 that detect the levels of the outputs obtained from the magnetic detectors 5X and 5Y, respectively.
1Y and a display board 20 having an array of light emitting elements connected to the output lines of the 2 fathom level detectors 21X and 21Y. As in the case of the first embodiment of the present invention, the function as a counter compass can be obtained with high sensitivity, and also has a large percentage moldiness. It is suitable for use when driving a car.

Further, in the case of the second embodiment of the present invention described above in FIG.
By mounting this on a motor vehicle as described below with reference to FIG. 16, it becomes a dog-like assistance for driving a motor vehicle.

That is, as shown in FIG. 16, the display board 20 described above in FIG. For example, a plate body 52 is extended integrally with the display plate 20, a support shaft 51 is rotatably disposed thereon, and the substrate 1 is attached to the support shaft 51 under the soft body 52. In addition, on the support shaft 51, on the plate body 52, clockwise north,
East bM! s 1 knob 5 with direction indication 55 such as west
4 are connected, and a finger 1155 for the orientation display 55 is attached on the plate 52.

In this way, the substrate 1 is arranged at a fixed part in the automobile so that it can be rotated by the rotary heir 54. In such a case, when the direction of the car is 6<the direction of the north azimuth direction, when it is north according to the azimuth display 55tFS indicator 35 of the eldest child 54, the light emission QS can be obtained from the diode DN of the display board 20. If it is assumed that the direction indicator 55 of the rotary heir 54 is attached in advance to the rotary heir 54 relative to the support shaft 51 and therefore the substrate 1 (in this case, the orientation of the substrate 1 is as shown in FIG. 6). <e
-#, = 0 rotation angle - direction) If it is north according to the direction display 5561 indicator 55 of the heir 54, as long as the car 6s is traveling north, the board 1
Because the direction is the direction of the rotation angle of θ Cori = 0 as shown in @6 Figure A.

The light emission 01 of the diode DN of the display board 20 is obtained.

However, if the car is traveling away from the north, for example toward the northeast, the orientation of the board 1 will be θ=θ as shown in Figure 7.
,, - +45 rotation angles are taken, so the diode D□ of the 5 display board 20 emits light nl.Therefore, if you want the car to move northward, the rotation heir 54 is set to the direction display 5.
5t15 fingers! 55 so that it is rotated to the north, and if the vehicle is driven so that the light emitted by the diode DH can be obtained, the vehicle will travel toward the north. Furthermore, if the direction display 55 of the rotating heir 54 is, for example, east according to the index 55, as long as the car is moving north, the direction of the board 1 will be #cow-+27.
Since the rotation angle is 0, the light emission from the diode DW of the 1 display plate 20 cannot be obtained, however, the automatic 1LtIS
If it is moving towards the east, the direction of board 1 is -9Nx
Since the rotation angle of mQ is -, the light emission from the diode DH of the 1 display board 20 is obtained. Therefore, if you want to drive the car toward the east, for example, the direction display 55 of the rotating heir 54 is set to the east by the index 55. The vehicle is rotated so that the diode DN emits light, and the vehicle is moved toward the east of the vehicle 61. Similarly, the direction display 5 of the rotating heir 54
For example, if the direction is southwest due to the $55 finger, the diode Dsl of the display board 20 will emit light as long as the vehicle is traveling north. 1 If the light emission to the diode of the display board 20 is obtained n,%, therefore, if you want the car to proceed toward the southwest, for example, turn the rotary heir 54 so that it is southwest according to its direction display 356S index 55, and then If the car is moved forward as far as possible to obtain the light emission h1 of the diode DH, the car will move toward the southwest.

Therefore, according to the second embodiment of the present invention as shown in FIG. 14, the V can be installed in a car as shown in FIG. 16, thereby greatly assisting the driving of the car. It is something.

Furthermore, in the above description, the case where the second embodiment of the present invention described above is mounted on an automobile with reference to FIG. 14 has been described, but the first embodiment of the present invention described above with reference to FIG. The 16th
As shown in the figure above, it can also provide great assistance in driving a car.

The above description only shows a few embodiments of the present invention. For example, in the embodiments shown in FIGS. 14 and 16, the level detectors 21X and 21Y each output v.
,! hS, Fig. 14 describes the case where the levels of outputs vx' and vJ are detected based on how many n We levels each of the outputs vx' and V1' exceed in six level ranges. In the above-mentioned embodiment, the level detectors 21X and 21Y output ■J and vJ levels t)S and 5 or more level ranges. It is possible to obtain a more accurate display of the direction to be detected than in the case shown in FIGS. 14 and 16, and further, for example, in the configuration shown in FIG. An indicator similar to the indicator 55 provided on the plate 52 is provided on the knob 54, and the plate 5 is adjusted accordingly.
It is also possible to provide an orientation display similar to the orientation display 55 provided on the outer periphery of the rotation heir 54 around the rotation heir 54 of No. 2 to obtain the same effect as described above in FIG. 16. be.

Further, in the embodiment described above in FIGS. 14 and 16, the output @22X2 of the level detector 21X and the output @22Y2 of the level detector 21Y are connected to the diode DN'DMl''m... as shown by dotted lines. It is also possible to connect the positive and negative polarity terminals of a diode D0 as a light emitting element similar to the above, and to arrange the diode Do at the origin position of the coordinates on the display board 20. In this way, as long as the moving body is within a certain angle of inclination with respect to the horizontal plane, only one light emission can be obtained from the diode other than diode D.
, diode D when the moving body f'5 is tilted beyond a certain tilt angle range with respect to the horizontal plane.

Diode D will not produce any more light than any of the other diodes except D. The luminescence hS is obtained.

For this reason, a diode D is attached. If 1'+1 does not exist, if the moving body is tilted beyond a certain tilt angle range with respect to the horizontal plane, how many diodes will emit light, and there is concern that the entire device may be malfunctioning due to the absence of light emission? That anxiety that arises.

Diode D. This is resolved by the emission of light.

Other variations of Banko Akihiko may be made without departing from the spirit of the invention.

[Brief explanation of the drawing]

FIG. 1 is a schematic bell diagram showing an example of an electronic compass according to the present invention, FIGS. 2 and 5 are longitudinal sectional views showing the state in which two other permanent magnets are attached, and sectional views on the ring-i@, 4 and 5 are waveform diagrams for explaining the operation of an example of the electronic compass according to the present invention shown in FIG. 1, and FIGS.
FIG. 5 is a diagram showing the relationship between the orientation of a moving object and the position of the point display to explain the operation of the electronic compass according to the present invention shown in FIG. 1, and FIG. A route map showing an example, and FIG. 15 a waveform diagram for explaining its operation. FIG. 16 is a route map showing still another example of the electronic compass according to the present invention. In 1Δ, M is a two-pole permanent magnet, 1 is a substrate, 2X and 2Y are Hall effect elements, 5X and 5Y are magnetic detectors, 4X and 4
Y is an amplifier, 15 is an oscilloscope, 15 is a display screen, P
20 is a display board, %21X and 21Y are level detectors, DN. DN8. ■) Yo 1) S! l, D, e Dsw'
~ and Do are diodes as light emitting elements, 22X1
~22X3 and 22Y1 to 22Y5 are output lines, 31 is a support shaft, 52 is a plate, 55 is a direction display %54 is a rotation heir,
55 indicates each index. Applicant: Ka-Meite Co., Ltd. Figure 2, Figure 15 Figure 16

Claims (1)

[Claims] 1. It has a north pole and eight poles, and is rotatably arranged on a moving body in a horizontal plane so that the north pole always takes a north direction based on the earth's magnetism. With a two-pole permanent magnet. First and second magnetic detection devices are arranged on the movable body while maintaining predetermined relative orientations in different horizontal planes so as to obtain an electrical output based on the magnetism of the two-pole permanent magnet. With the vessel. An electronic compass characterized by comprising: azimuth display means for displaying the azimuth of the moving object based on the electrical outputs obtained from the first and second magnetic detectors. 2. In the electronic compass set forth in claim 1,
An electronic compass characterized in that the first and second magnetic detectors are oriented in different relative directions such that the angle formed by these directions is approximately 90 degrees. (v) In the electronic compass set forth in claim 1,
The first and second magnetic detectors have mutually different relative orientations, and the angles formed by those orientations are approximately 90 degrees,
The direction display means includes an oscilloscope having an X-axis input terminal and a Y-axis input terminal, and the electrical outputs of the first and second magnetic detectors are connected to the X-axis input terminal and the Y-axis input terminal of the oscilloscope. An electronic compass characterized in that it is supplied separately. 4 In the electronic compass set forth in claim 1,
An electronic compass characterized in that the first and second magnetic detectors are rotatably disposed on the movable body in a substantially horizontal plane. 5. A two-pole permanent magnet having a north pole and eight poles and rotatably arranged in a horizontal plane on a movable body, with the north pole always oriented in the north direction based on the earth's magnetism. . The first and second magnets are arranged on the movable body while maintaining predetermined relative orientations in different horizontal planes so as to obtain an electrical output based on the magnetism of the two-pole permanent magnet. a magnetic detector; first and second level detectors for detecting the levels of electrical output obtained from the first and second magnetic detectors; and the first and second level detectors for ships. An electronic compass characterized by comprising: azimuth display means for displaying the azimuth of the moving object based on the direction of the moving object. 6. The electronic compass set forth in claim 5 is characterized in that the direction display means S includes a display element that operates based on the detection outputs of the first and second level detectors. Electronic compass O