JPS6111604Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a distance/direction display device that simultaneously displays the straight-line distance from a starting point to a travel point and the traveling direction.

2. Description of the Related Art Conventionally, some automobiles display separately the traveling distance detected by a traveling distance sensor and the traveling direction detected by a compass. However, this method has the problem that it is very difficult to recognize the positional relationship between the starting point and the driving point because it is necessary to visually check each of them separately to know the travel distance and traveling direction from the starting point to the driving point.

The present invention has been made in view of the above-mentioned problems, and it is an object of the present invention to provide a distance/azimuth display device that can easily recognize the positional relationship between a departure point and a traveling point.

The present invention will be described below with reference to embodiments shown in the drawings. FIG. 1 is a block diagram showing the electrical control system of the present invention. In FIG. 1, 1 is a set switch for setting the starting point of the automobile. 2 is a flux gate type geomagnetic sensor that generates a signal with a phase and amplitude depending on the traveling direction. 3 is a distance sensor which sequentially generates pulses according to the distance traveled by the automobile. Reference numeral 4 denotes a logical operation circuit, which is configured with a microcomputer as its main part, and which converts the signal from the geomagnetic sensor 2 into a 4-bit digital signal (hereinafter referred to as an azimuth signal) indicating the traveling direction and outputs the same. Based on the pulse from the mileage sensor 3, the X and Y components of the mileage are accumulated using the traveling direction on the counters for accumulating the X and Y components of the distance, which are reset when the set switch 1 is turned on. The integrated value is used to calculate the straight-line distance from the starting point to the travel point, and a 4-bit digital signal (hereinafter referred to as a straight-line distance signal) is output. 5 is a disk drive circuit which includes an analog multiplexer that discriminates the direction signal from the logical operation circuit 4 and selects one of 16 analog voltage values indicating the direction; The voltage value from the detection circuit 7 is compared with the voltage value selected by the analog multiplexer to generate a signal for rotating or stopping the disk 8. The detailed configuration of the disk drive circuit 5 and the disk position detection circuit 7 is explained in the second section.
It is shown in the figure. Reference numeral 6 denotes a disk drive device, which is composed of a motor, a speed reducer, gears, etc., which will be described later, and drives the disk 8 to rotate based on a signal indicating rotation from the disk drive circuit 5. Reference numeral 9 denotes a distance display path, which uses an analog multiplexer to discriminate the linear distance signal from the logic operation circuit 4 and lights up an LED corresponding to the information of the linear distance signal.
Reference numeral 10 denotes a distance display section, which includes a plurality of LEDs and lights up the LEDs in response to a signal from the distance display circuit 9. The detailed configuration of the distance display circuit 9 and the distance display section 10 is shown in FIG.

FIG. 4 is a side view showing the overall configuration of the present invention, 11 is a display window that displays the straight distance and heading direction by lighting LEDs, 12 is a display cover, 1
3 is a housing, and 14 is an LED cover that covers the 11 LEDs in the distance display section 10, which is attached to the disc 8. In addition, the above 11
The LEDs are arranged in a row in the radial direction of the disk 8. 15 is a distance display circuit section in which the distance display circuit 9 is housed on the disk 8; 16 is a brush attached to the disk 8 for transmitting the linear distance signal from the logic operation circuit 4 to the disk 8; 17; is housing 1
3, and the linear distance signal is fixed to the brush 1.
Signal transmission printed board for transmitting to 6, 26
2 is a shaft to which a gear 0 meshed with a gear 19 attached to a motor 18 is attached to rotate the disk 8; 21 is a potentiometer constituting the disk position detection circuit 7; A gear 22 is attached to the shaft 21 so as to mesh with the gear 20 attached to the shaft 26 described above. Further, the potentiometer 21 is an endless variable resistor, and its resistance value changes with one rotation. Further, the number of teeth is the same as that of the gear 22, and when the disc 8 rotates once, the potentiometer 21 rotates once. 23 receives the azimuth signal and linear distance signal from the logic operation circuit 4 through the input terminal 24, and
This is a printed board that houses a disk drive circuit section 25 consisting of the following.

FIG. 5 is a cross-sectional view of the LED cover 14, and the LED light comes out from a hole provided in the upper part of the cover.

Further, FIG. 5 is a front view of the display cover 13, in which numbers indicating straight-line distances and letters indicating directions are indented.

Next, the operation of the above configuration will be explained. Now, assuming that the starting point of the car is set by the set switch 1, the logic operation circuit 4 starts its operation, and first, the signal "okm" as a straight line distance signal is transmitted to the signal transmission print 17,
The information is transmitted to the distance display circuit section 15 through the brush 16, where the 111 signals attached to the disc 8 are transmitted.
Lights up the part of the LED that corresponds to okm. The situation seen at this time from the display window 11 is shown in Figure 7a.
Shown below. FIG. 7a shows that the LED in the center of the display cover 12 is lit.

Next, if the car travels, for example, to a position with a straight line distance of "2 km" from the starting point and a direction of "north", a direction signal indicating "north" appears, so the disk drive circuit 5 The calculation is processed by
A "rotation" signal is transmitted to the disc drive device 6.
This signal causes the motor 18 to rotate, and this rotation is transmitted to the gears 19 and 20, which rotates the shaft 26 and causes the disk 8 to start rotating. gear 20 at the same time
Since the gear 22 also rotates, the potentiometer 21 rotates, and a voltage signal determined by the resistance value of the potentiometer 21 is transmitted to the disc drive circuit 5, causing the disc 8 to move to the preset "north" position. When the disk 8 rotates to this position, the disk drive circuit 5 outputs a "stop" signal, and the disk 8 stops. At this time, the 11 LEDs are lined up in a line in the "north" direction. Furthermore, since a straight line distance signal indicating "2 Km" appears, this signal passes through the signal transmission printed board 17 and the brush 16, as described above.
The distance display circuit 9 calculates “2Km”.
The LED indicating this lights up (as shown in Figure 7b).

Furthermore, the car was traveling “east-southeast”, “5km”
When the vehicle reaches the position shown in Figure 7c, the disk 8 rotates in a similar manner, and the 11 LED rows line up in the direction of "east-southeast", and the LED indicating "5 km" lights up (as shown in Figure 7c). .

As described above, by obtaining signals indicating the straight line distance from the starting point and the traveling direction when the automobile is running, the disk 8 is rotated, the position of the disk 8 is detected by the potentiometer 21, and the direction is determined. When the disk 8 rotates until the signal matches the row of 11 LEDs, the rotation of the disk 8 is stopped and at the same time one of the LEDs corresponding to the linear distance signal is turned on, so the display window 11 shows the following: The straight line distance from the starting point and the heading direction will be displayed at the same time.

In addition, in the above embodiment, the concentric circles indicating straight line distances printed or engraved on the display cover 12 are filled with numerical values at equal intervals, but the numbers may not be evenly spaced and may be scaled, for example, in a log/functional manner. .

Furthermore, the display cover 12 does not need to be transparent; only the portion through which the LED passes may be transparent, and the other portions may be opaque.

In addition, the one that lights up and displays the straight line distance and direction.
The display is not limited to LEDs, and may be a lamp, or may be a lighting display using a cathode ray tube or the like.

Further, the set switch 1 may be an ignition switch so that the distance and direction can be displayed at all times when the vehicle starts driving.

As described above, in the present invention, based on the traveling direction of the vehicle detected by the direction detecting means and the traveling distance of the vehicle detected by the distance detecting means, the straight line distance from the starting point set by the set switch to the traveling point is determined. Since the display means displays the distance from the departure point and the direction of travel at the time as coordinates, it is possible to easily recognize the travel point relative to the departure point by displaying the straight line distance from the departure point and the direction of travel at the time as coordinates. Moreover, since they are displayed simultaneously without being displayed individually, there is an excellent effect that the display area can be made smaller.

[Brief explanation of the drawing]

Figure 1 is a block diagram showing the electrical control system of the present invention, Figure 2 is an electrical wiring diagram showing the detailed configuration of the disc drive circuit and disc position detection circuit in Figure 1, and Figure 3 is the same as Figure 1. Electrical wiring diagram showing the detailed configuration of the distance display circuit and distance display section inside, Figure 4 is a side view of the overall configuration of the present invention, Figure 5 is a sectional view of the LED cover, and Figure 6 is a front view of the display cover. , FIGS. 7a, 7b, and 7c are views of the display cover viewed from the display window in various states. 1... Set switch, 2... Geomagnetic sensor,
3... Mileage sensor, 4, 5, 6, 7, 8,
9, 10... Logical operation circuit, disk drive circuit, disk drive device, disk position detection circuit, disk, distance display circuit, distance display section, 12...
...Display cover as a display section.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) Direction detecting means for detecting the traveling direction of the vehicle and generating a direction signal, distance detecting means for detecting the traveling distance of the vehicle and generating a distance signal, and a starting point. a display means having a coordinate plane in which orthogonal coordinates are formed by east-west and north-south directions, a direction signal from the direction detecting means and a distance signal from the distance detecting means, and a display means for setting the departure time set by the set switch; a calculation means for calculating the straight-line distance from the point to the current traveling point; and a circle centered on the origin of the orthogonal coordinates and having a radius equal to the straight-line distance calculated by the calculation means;
A distance/azimuth display device comprising: display control means for displaying a point intersecting the traveling direction of the vehicle detected by the direction detection means on orthogonal coordinates of the display means. (2) In the display means, a straight line dividing the circumference into 16 equal parts and circumferential lines arranged in multiple rows of concentric circles are marked on the coordinate plane, and furthermore, at least four locations on the straight line are marked with an azimuth. and a number indicating the distance is marked at the intersection of at least one of the straight lines and the circumferential line. Orientation display device.