JPH054111B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to an information transmission device for a golf course, and can be used, for example, to call golfers from a clubhouse or office.

(b) Prior art Conventionally, it has been possible to call a specific golfer, etc.
When transmitting information to specific golfers, etc.,
By installing poles at many locations on the golf course and installing speakers on the poles, and installing broadcasting equipment including microphones in the clubhouse or office, and connecting this broadcasting equipment and each speaker with wires, Calls and information were communicated through speakers.

Such conventional devices spoil the beauty of the golf course,
In addition, in order to call a specific golfer, all the golfers who are playing must call their attention to the call from the speaker, which naturally interrupts play and causes inconvenience to many other golfers. There are drawbacks.

(c) Purpose of the Invention The present invention was invented in view of the above points, and aims to provide an information transmission device that does not spoil the beauty of a golf course and does not cause trouble to many other golfers. be.

(d) Structure of the invention In order to achieve the above object, the device according to the present invention includes a guide line buried along a golf course,
This system utilizes a golf cart that travels on the guide line while detecting a guide running signal flowing along the guide line. That is, the guide line is supplied with the guidance running signal and an information transmission signal corresponding to each golf cart from a signal generator, and the golf cart is provided with receiving means for receiving the information transmission signal and information received by this means. It is constructed by providing a determining means for determining whether the transmitted signal is a signal for one's own golf cart, and an expressing means for expressing an information transmission signal based on the output of the determining means.

(E) Embodiment An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a model diagram of a golf course. The golf course shown in this drawing has three courses "A,""B," and "C." Each course has a guide line 1 buried in the ground along the course, and each guide line has a clubhouse. Alternatively, a signal generator 2 provided in the management office of the golf course supplies a superimposed signal of a guidance driving signal for the golf cart 3 and an information transmission signal. Each golf cart runs on the guide line 1 while detecting an alternating magnetic field generated by the flow of a guide running signal on the guide line 1. In FIG. 1, each golf cart is labeled with a cart number.

As shown in FIG. 2, the signal generator 2 includes a switch section 2a that generates a signal corresponding to the cart number of the golf cart 3, and a digital switch section 2a that generates a digital signal corresponding to the cart number based on the operation of this switch section. It is composed of a signal generating section 2b, a variable frequency oscillator 2c whose output oscillation frequency changes depending on an input voltage according to this digital signal, and an amplifier 2d which amplifies the output of this oscillator. The switch part 2a is
It has a course selection key 2e shown in FIG. 1, a numeric keypad 2f for specifying a cart number, an "ALL" key 2g for calling all golf carts 3 at the same time, and a "BEEP" key 2h for a call command.
The cart number specified by the pressing operation is displayed on the display section 2i. Six cart numbers can be displayed on this display. Digital signal generator 2b
According to the cart number of 99 golf carts,
It outputs an 8-bit digital signal,
The digital signals of cart numbers "1", "2" and "99" are shown in FIG. As is clear from this drawing,
The digital signal X for each cart number includes a leader bit and an 8-bit signal and is output for 10 milliseconds. When this digital signal X has the waveform shown in FIG.
_Y1 is frequency modulated by the digital signal X. In this case, the high frequency signal Y ₁ becomes a guiding driving signal for the golf cart 3, and the digital signal X becomes an information transmission signal. The output signal Y, which is a superimposition of the guided traveling signal and the information transmission signal, is amplified by the amplifier 2d and flows to the guided wire 1.

The output signal Y flowing through the guide wire 1 generates an alternating magnetic field around the guide wire, and this alternating magnetic field is detected by an antenna coil serving as a receiving means provided in each golf cart 3. This golf cart will be explained based on the perspective view shown in FIG. In this drawing, 4
The main body of the cart is a main body frame 5 made of pipes, and drive wheels (rear wheels 6, 6) are provided on both rear sides, and a cover 7 between the wheels is provided.
Inside, a drive motor that drives the wheels and a lead-acid battery that serves as its power source are mounted. The main body frame 5 has a golf bag mounting part 8, a putter case 9, etc., and a mounting stay 11 for a caster part 10 is provided at the front of the cart main body 4, and a mounting stay 11 for a caster part 10 is provided on the lower surface of this stay. A motor 13 for angle control is attached, and a first pulley 14 is attached to the motor shaft, and a second pulley 16 is attached to the shaft of the caster frame 15 attached to the attachment stay 11 on the upper surface of the attachment stay. The pulleys are connected by a timing belt 17.

The caster portion 10 is rotatably attached to the mounting stay 11, that is, the cart main body 4, and is configured with a caster frame 15 and a caster 12 as main elements. The caster frame 15 has a mounting stay 11
A T-shaped support plate 18 is attached that protrudes forward from the front end of the support plate, and a pair of detection coils 19 and 20 as antenna coils are attached at predetermined positions on the left and right sides of the tip of the support plate, and are spaced equidistantly from the center thereof. ing. These pair of detection coils detect the alternating magnetic field emitted from the guide wire 1 buried in the road surface, and the deviation of the detection output causes the motor 13 for controlling the angle of the caster 12 with respect to the cart body 4 to
It controls the

21 runs the golf cart 3 automatically, electrically,
This is a control box that switches between manual push and stop. Reference numeral 22 denotes a manual brake, which is used when the golf cart is driven by electric power or by hand.

The outputs of the pair of detection coils 19 and 20 are input to a control circuit 23 as shown in FIG. line 1
drive on the line. The control circuit 23 includes amplifiers 23a and 23b that convert the outputs of the pair of detection coils 19 and 20 into DC and amplify them, a differential comparator 23c that compares the output deviation of the pair of amplifiers, and a differential comparator 23c that compares the output deviation of the pair of amplifiers. A drive circuit 23d that controls the angle control motor 13 is provided. In this case, although not shown, the speeds of the drive motors for the drive wheels 6, 6 may be further controlled based on the deviation output of the differential comparator 23c.

Further, the outputs of the pair of detection coils 19 and 20 are input to a filter section 24, where noise is removed and an output signal Y shown in FIG.
only passes through. This output signal Y is amplified by an amplifier 25 and converted by a detector 26 into a voltage according to the frequency change. This voltage is shaped into a digital waveform by a waveform shaper 27, and a digital signal X as an information transmission signal included in the output signal Y is created.
Therefore, this digital signal X becomes as shown in FIG. 3, and the detector 26 and waveform shaper 27 constitute a demodulation circuit for the digital signal X.

Each golf cart is provided with a digital signal in the determination circuit 28, which is set for each golf cart in accordance with the cart number. Therefore, the determination circuit 28 determines whether or not the digital signal X output from the waveform shaper 27 matches its own preset digital signal, and if they match, the drive controller 29 is actuated. , the buzzer 30, which is a means for expressing an information transmission signal, sounds. This buzzer is built into the control box 21 located at a high position in the cart body 4 because the sound is transmitted better when the buzzer is emitted from a high place above the ground.

Next, how to use the switch section 2a will be explained.

As shown in FIG. 1, when attempting to call up a golf cart with each two-digit cart number shown on the display section 2i by operating the numeric keypad 2f, if the "BEEP" key 2h is pressed in this state, the cart Numbers "11", "22", "33", "44", "55" and "66"
”
The buzzer 30 of each golf cart 3 sounds. After being called, it is reset by operating the "CL" key 2j, and the display on the display section 2i is reset. Here, press the "A" button of the course selection key 2e,
When you operate "BEEP" key 2h, course "A"
The buzzers 30 of all the golf carts 3 in the area sound. Also, press the "ALL" key 2g,
When the "BEEP" key 2h is pressed, all operating buzzers 30 sound.

In the above embodiment, the filter section 24 provided in the golf cart 3 includes a mixer circuit.
In this mixer circuit, the golf cart 3 is connected to the guide wire 1.
a pair of detection coils 19 when traveling on a curve;
Used to stabilize the output of 20. That is, when the golf cart 3 is traveling on a straight guiding wire, the outputs of the pair of detection coils 19 and 20 are approximately the same voltage because the guiding wire 1 is located directly below the middle of the pair of sensing coils 19 and 20. becomes. However, when the golf cart 3 is traveling around a curve, the guide wire 1 is not located at the middle lower part of the pair of detection coils 19 and 20, and the position of the guide wire 1 is slightly shifted from the middle lower part. Therefore, the distance between the guide wire 1 and the pair of detection coils 19, 20 is different, and the outputs of the pair of detection coils 19, 20 are different. This output difference differs depending on the right curve and left curve, and also depending on the traveling speed. Therefore, by mixing the respective outputs of the pair of detection coils 19 and 20, a stable signal can be obtained even when driving around a curve. Incidentally, when only the output of one detection coil is used alone, the output when driving on a curve is approximately 0.8 to the output when driving in a straight line.
It changes by about 1.2 times. A pair of detection coils 19, 2
When a mixer with an output of 0 is performed, the output is approximately twice that of one of the detection coils when running in a straight line, and is stable.

(F) Effects of the Invention As described above, according to the present invention, information transmission signals can be transmitted using guide wires buried along the golf course.
It is not necessary to erect poles on the golf course and to connect speakers attached to the upper ends of the poles by wire, so that the beauty of the golf course is not spoiled.
In addition, each golf cart is equipped with a receiving means for receiving the information transmission signal and a determining means for determining whether the information transmission signal received by this means is a signal intended for the own golf cart. The information will be transmitted only to the relevant golf cart, and the information transmission signal output means provided in the relevant golf cart will be activated. Therefore, the number of inconveniences caused to many golfers during play is reduced.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention; Fig. 1 is a model diagram of a golf course, Fig. 2 is a block diagram of a signal generator, Fig. 3 is a digital signal waveform diagram, and Fig. 4 A and B show different signals. FIG. 5 is a perspective view of the golf cart, and FIG. 6 is a partial electric circuit diagram of the golf cart. 1... Guide wire, 3... Golf cart, 2... Signal generator, 19, 20... Receiving means (detection coil), 28... Judgment means (judgment circuit), 30... Expression means (buzzer) .

Claims (1)

[Claims] 1 Guide lines buried along the golf course,
A golf cart that runs on the guide line while detecting a guided running signal flowing through the guide line, and a signal generator that supplies the guided running signal and an information transmission signal corresponding to each golf cart to the guide line, Each of the golf carts includes a receiving means for receiving the information transmission signal, a determining means for determining whether the information transmission signal received by the means is a signal intended for the golf cart, and an output of the determining means. basis,
1. An information transmission device for a golf course, comprising: display means for displaying an information transmission signal.