JPH11128433A - Caddy system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To smoothly progress a golf play, compensate the skill of a caddy, and improve the service to a player. SOLUTION: This caddy system is formed of a fixed station 12 set in a golf course and a mobile station 10 loaded on a golf cart. The fixed station 12 has fixed receiving parts 42, 44 for detecting the coming direction of a radio wave transmitted from the mobile station 10, a signal processing part 40 for determining the position of the mobile station 10 on the basis of the positional relation between the coming direction of the radio wave and the fixed receiving parts 42, 44, and a fixed transmitting part 46 for transmitting the positional information to the mobile station 10. The mobile station 10 has a mobile transmitting part 22 for transmitting a radio wave to the fixed station 12, a mobile receiving part 30 for receiving the positional information transmitted from the fixed transmitting part 46 to this radio wave, an arithmetic processing part 40 for determining the remaining distance from the present position to a target position on the basis of the positional information, and a display part 28 for displaying the present position and the remaining distance together with the layout of a hole.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a caddy system for providing information to a player on a golf course.

[0002]

2. Description of the Related Art In general, a caddy at a golf course needs to be familiar with the layout and play of the course and to provide advice to the player and to have a customer service ability to make the play fun. Since caddies are required to have such special skills, there is a shortage of human resources with the increase in golf courses.

[0003] For this reason, in recent years, there has been considered a device having an auxiliary function function of providing information necessary for a course layout or play to a player in place of a caddy or in order to supplement a caddy of low skill. Have been.

As a device having an auxiliary function, for example, an optical distance measuring device for measuring a distance from a current position to a hole cup (pin flag) or a distance measuring device using radio waves have been devised.

[0005] However, each of these devices is used by an individual player, and the information acquired by the device is of personal benefit, so that there is a drawback that it cannot be used even in private competitions due to competition rules.

[0006] In addition, in the case of playing without carrying a caddy other than a game (so-called self-play), even if the device having the auxiliary function as described above is used,
Only information on the distance to the hole cup can be obtained, and originally information on the course layout obtained from the caddy, matters to be careful when playing, and the like cannot be easily obtained.

[0007]

As described above, a device having a function replacing the conventional caddy cannot be used due to competition rules because it is used personally, and even if it is used in non-competition situations. I couldn't get the information for the caddy.

[0008] When such information necessary for playing cannot be obtained, there is a problem that the service for the player is deteriorated due to a low level of proficiency of the caddy, and the progress of the play is delayed. there were.

The present invention has been made in consideration of the above-described circumstances, and a caddy system capable of smoothly progressing golf play, complementing the caddy proficiency, and improving the service to the player. The purpose is to provide.

[0010]

The present invention relates to a caddy system comprising a fixed station installed in a hole of a golf course and a mobile station mounted on a golf cart running in the hole. The fixed station receives a radio wave transmitted from the mobile station, a plurality of fixed receiving means for detecting the direction of arrival of the radio wave, the direction of arrival of the radio wave detected by the plurality of fixed receiving means, the plurality of Based on the positional relationship of the fixed receiving means, processing means for determining the position of the mobile station, comprising a fixed transmitting means for transmitting to the mobile station position information indicating the position determined by the processing means, The mobile station includes: a mobile transmission unit that transmits a radio wave to the fixed station; and position information transmitted from the fixed transmission unit of the fixed station with respect to the radio wave transmitted by the mobile transmission unit. Moving receiving means for receiving, moving processing means for calculating a remaining distance from a current position to a target position based on position information received by the moving receiving means, Display means for displaying the current position on the layout determined based on the position information received by the CPU and the remaining distance determined by the arithmetic processing means.

According to such a configuration, the mobile station mounted on the golf cart and the inside of the hole (for example, near the green)
The mobile station transmits and receives radio waves to and from the fixed station installed at the station, finds the position of the mobile station on the course, and displays the current position along with the layout of the hall. Further, since the current position in the hall is obtained, the distance from the current position to the target position (such as a hole cup) is obtained and displayed.

Further, the mobile transmission means of the mobile station transmits a radio wave unique to the hall. Thereby, a plurality of holes (for example, 1
(8 holes), even if the present system is used, interference with adjacent courses is prevented, so that it is possible to reliably function each hole.

Further, the mobile transmission means of the mobile station transmits a radio wave including identification information unique to a golf cart on which the mobile station is mounted. Thereby, even if there are a plurality of golf carts in the hole, it is possible to ensure that each mobile station mounted on each golf car functions.

[0014]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing the configuration of the caddy system according to the present embodiment. FIG.
As shown in FIG. 1, the caddy system in the present embodiment includes a mobile station 10 and a fixed station 12.

The mobile station 10 is mounted on each golf cart running in a hole of a golf course, and has a function of providing various information to a player instead of a caddy.

The fixed station 12 is installed in each hole of the golf course, for example, near the green, and transmits and receives radio waves to and from the mobile station 10 mounted on a golf cart running on the course. Thus, a function of obtaining the position of the mobile station 10 and providing the player with various information in the mobile station 10 is provided.

As shown in FIG. 1, the mobile station 10 includes a hole selection instruction input unit 20, a distance measurement instruction input unit 21, a mobile transmission unit 22, a recording medium 24, a reproduction unit 26, a display unit 28, and a mobile reception unit 30. , And the respective functions of the arithmetic processing unit 32 are provided.

The hole selection instruction input unit 20 is for inputting a selection instruction by a player for a hole to be played (a hole to be driven by a golf cart), and the information of the selected hole is transmitted to the movement transmission unit 22 and reproduced. Notify section 26.

The distance measurement instruction input unit 21 is for inputting an instruction to start measurement of a position from the current position to a target position, for example, a hole cup. Notice.

The mobile transmission unit 22 includes a distance measurement instruction input unit 2
In response to the notification from 1, a radio wave unique to the hole, for example, a radio wave of a specific frequency assigned to each hole, corresponding to the hole selection instruction input by the hole selection instruction input unit 20, is transmitted to the fixed station 12. To send. The mobile transmission unit 22 transmits identification information unique to the mobile station 10 (golf cart), for example, a radio wave including an address.

The recording medium 24 is constituted by a CD-ROM or the like, and records information (layout information) on the layout of the golf course. The layout information includes information on the shape of each hole of the golf course, for example, information on the relative position of a green, a bunker, a hazard, and the like. Further, the layout information can include not only information on a planar layout but also information on the height (hole cross section) of a hole.

The reproduction section 26 reproduces information recorded on the recording medium 24, and can display a course layout on the display section 28 based on the layout information. When a hole selection instruction is input from the hole selection instruction input unit 20, the reproducing unit 26 reproduces the layout information of the corresponding hole and causes the display unit 28 to display the layout information.

The display section 28 is for providing various information to the player. In addition to the course layout reproduced by the reproduction section 26, the display section 28 is detected by transmitting and receiving radio waves to and from the fixed station 12. Information such as the current position, the remaining distance to the target position (for example, a hole cup), the height difference to the target position, and the wind direction measured by the wind measuring unit 48 of the fixed station 12 are displayed.

Mobile receiving section 30 receives radio waves transmitted from fixed station 12 in response to transmission of radio waves from mobile transmitting section 22 to fixed station 12. The radio wave transmitted from the fixed station 12 includes position information indicating the current position of the mobile station 10.

The arithmetic processing unit 32 controls the mobile station 1 based on the position information contained in the radio wave received by the mobile receiving unit 30 and the layout information reproduced by the reproducing unit 26.
Calculation of the remaining distance from the current position of 0 to the target position (for example, a hole cup) and calculation of the wind direction based on the information on the wind measured by the wind measuring unit 48 of the fixed station 12 are executed. .

On the other hand, as shown in FIG.
It comprises a signal processing unit 40, fixed receiving units 42 and 44, and a fixed transmitting unit 46. Fixed receiving units 42, 44
The fixed transmitting unit 46 is installed in the hall, for example, near the green.

The signal processing unit 40 includes fixed receiving units 42 and 44
The position of the mobile station 10 is obtained based on the direction of arrival of the radio wave from the mobile station 10 detected by each of the above and the positional relationship between the fixed receiving units 42 and 44.

The fixed receiving units 42 and 44 receive radio waves from the mobile station 10 and are installed at predetermined intervals. The fixed receiving units 42 and 44 detect the arrival direction of the radio wave transmitted from the mobile station 10 and notify the signal processing unit 40 of the detection. The detailed configuration of the fixed receiving units 42 and 44 will be described later with reference to FIG.

The fixed transmitting section 46 transmits a radio wave including position information indicating the position of the mobile station 10 obtained by the signal processing section 40 to the mobile station 10. The wind measurement unit 48 detects the wind direction at the installation position of the fixed station 12 (for example, near the green),
It measures the wind speed, and sends these wind information to the signal processing unit 4.
0 to the mobile station 10.

FIG. 2 shows the fixed receiving section 42 (4
4) shows the configuration. As shown in FIG. 2, one fixed receiving unit 42 (44) includes receiving antennas 60 and 62, receiving circuit units 64 and 66, and a phase comparing unit 68.

The receiving antennas 60 and 62 receive radio waves from the mobile station 10 and output them to the receiving circuit units 64 and 66, respectively, and are arranged at predetermined intervals in the horizontal (horizontal) direction.

Receiving circuit sections 64 and 66 receive radio wave signals received by corresponding receiving antennas 60 and 62 and output the signals to phase comparing section 68. The phase comparison unit 68 measures the phase difference between the radio waves received by the two reception antennas 60 and 62 based on the signals from the reception circuit units 64 and 66, and compares the measured phase difference with the signal processing unit 4
Notify 0.

FIG. 3 is a view for explaining the installation situation of the fixed station 12, and shows a plane layout of one hole. As shown in FIG. 3, the fixed receiving unit 4 of the fixed station 12
2 and 44 are installed on both sides near the green, and the fixed transmitting unit 46 is installed behind the green between the fixed receiving units 42 and 44. Golf cart 7 running through the hole
The mobile stations 10 installed at 0 and 72 transmit and receive radio waves to and from the fixed receiving units 42 and 44 and the fixed transmitting unit 46, respectively.

Next, the operation of the caddy system according to the present embodiment will be described. First, before starting to play in the hole, the mobile station 1 mounted on the golf cart
At 0, a hole selection is made by the player.
The mobile station 10 is provided with, for example, an operation panel and the like, and is provided with a display for displaying various information and an operation unit for inputting an instruction from a player.

FIG. 4 shows an example of the operation panel. As shown in FIG. 4, as the operation units, a hole selection operation unit 80 and a distance measurement key 81 are provided. The display screen of the display also includes a hole number display area 82,
Course layout display area 84, remaining distance display area 8
5. An elevation difference display area 86 is provided.

When an operation to select a hole to be played, for example, the 14th hole, is performed in the hole selection operation unit 80, the hole selection instruction input unit 20 transmits the selected hole to the reproduction unit 26 and the movement transmission unit 22. Notify.

The reproducing unit 26 reproduces the layout information of the 14th hole recorded on the recording medium 24, and
The course layout display area 84 of the display
And a hole number is displayed in a hole number display area 82. During the layout of the hole displayed in the course layout display area 84, a green 84 provided in the hole is provided.
a, the bunker 84b, the position of the hazard 84c, etc. are displayed.

When the distance measurement key 81 is pressed by the player at an arbitrary timing, the distance measurement instruction input unit 21 notifies the movement transmission unit 22 that there is an instruction to start measurement. For example, the distance measurement key 81 is operated when the player wants to know the distance to the hole cup before shooting.

The mobile transmission unit 22 transmits a radio wave specific to the hole notified by the hole selection instruction input unit 20, for example, a radio wave of a specific frequency assigned to each hole (mobile station transmission radio wave 50) to the fixed station 12. To send. The mobile station transmission radio wave 50 transmitted from the mobile transmission unit 22 includes identification information unique to the mobile station 10 (golf cart), for example, address information.

When radio waves are continuously transmitted from the mobile station 10, 1
When a plurality of golf carts are present in one hole, interference may occur and the golf cart may become unusable. Therefore, it is desirable to transmit radio waves for a short time. Therefore, usually,
Only when a distance measurement is instructed by operating the distance measurement key 81, necessary information is provided by transmitting and receiving radio waves to and from the fixed station 12. In this case, the distance measurement key 8
After the operation on the device 1, the transmission and reception of radio waves for a short period of time, for example, within one to several seconds, can sufficiently function.

Information is always provided not only when a distance measurement is instructed by operating the distance measurement key 81 but also by performing a distance measurement according to the current position as the golf cart moves. You can do it. In this case, it is necessary to continuously measure the position, but since the moving speed of the golf cart itself is slow, it is functionally sufficient to intermittently transmit and receive radio waves at intervals of several tens of seconds or more. Thereby, even when there are a plurality of golf carts on the same course, the possibility of interference decreases, and the distance of each golf cart at the mobile station 10 can be measured.

The mobile station transmission radio wave 50 transmitted from the mobile transmission unit 22 of the mobile station 10 is received by fixed reception units 42 and 44 installed near green. The fixed receiving units 42 and 44 include two receiving antennas 60,
The arrival direction is detected based on the phase difference of the mobile station transmission radio wave 50 received by 62 (details will be described later).

The fixed receiving units 42 and 44 notify the signal processing unit 40 of the direction of arrival of the detected mobile station transmission radio wave 50, respectively. The signal processing unit 40 calculates the position of the golf cart (mobile station 10) based on the positional relationship between the fixed receiving units 42 and 44 and the direction of arrival of the radio wave detected by each. The position of the golf cart (mobile station 10) is, for example, the fixed station 1
2 (fixed receivers 42, 44) relative to the installation position.

The fixed receiving units 42 and 44 are connected to the mobile station 1.
The address contained in the radio wave transmitted from 0 is decoded, and it is determined which golf cart is the mobile station transmission radio wave 50 from the mobile station 10 mounted on the golf cart. This allows multiple golf carts to be in the same hole,
Even if radio waves are transmitted from each mobile station 10,
It is possible to identify which mobile station 10 has received the radio wave.

The signal processing unit 40 transmits a fixed station transmission radio wave 52 including position information indicating the calculated position from the fixed transmission unit 46 to the mobile station 10 from the fixed transmission unit 46. It should be noted that not only the position information on the mobile station 10 but also information on the position of a hole cup provided on the green can be included. That is, since the hole cup is changed to an arbitrary position on the green, the changed position can be corrected. In this case, fixed station 1
An input unit (not shown) for inputting the position of the hole cup (inputs information from a keyboard, a switch, or the like) is provided at 2.
Is provided so as to be input to the signal processing unit 40. The position of the hole cup is, for example, the fixed station 12 (the fixed receiving unit 4
2, 44) relative to the installation position. The signal processing unit 40 transmits not only the position information of the mobile station 10 but also information (correction information) for correcting the position of the hole cup to the mobile station 10.

The address of the mobile station 10 identified by the fixed receiving units 42 and 44 is added to the fixed station transmitting radio wave 52 transmitted from the fixed transmitting unit 46. Mobile station 1
The mobile receiving unit 30 receives the fixed station transmission radio wave 52 transmitted from the fixed transmission unit 46 of the fixed station 12, decodes the address added to the fixed station transmission radio wave 52, and uses the address corresponding to the own station. It is determined whether or not there is. That is, even when a plurality of golf carts are in the same hole, the radio wave transmitted from the fixed transmission unit 46 of the fixed station 12 notifies the mobile station 10 mounted on any golf cart of the position information. The mobile station 10 mounted on each golf cart.

If the address is that of the own station, the mobile receiving section 30 obtains position information and correction information contained in the fixed station transmission radio wave 52 and notifies the arithmetic processing section 32 of the obtained information. The arithmetic processing unit 32 calculates and obtains a position on the course layout based on the position information from the movement receiving unit 30. For example, if the position information is a relative position with respect to the installation position of the fixed reception units 42 and 44, the installation position of the fixed reception units 42 and 44 in the hole is known. ) Can be obtained.

The arithmetic processing unit 32 displays the
A predetermined mark indicating the current position of the golf cart (mobile station 10) is displayed in the course layout displayed in the course layout display area 84 of the display. In the display example shown in FIG. 4, the positions of the golf carts (84d, 84e) are represented by square marks.

The arithmetic processing unit 32 is provided with the mobile receiving unit 30
The remaining distance from the current position to the hole cup is determined based on the position information and the correction information from the camera, and a numeral indicating the distance is displayed on the display unit 28. The display unit 28 displays a number (for example, yard unit) representing the remaining distance in the remaining distance display area 85 of the display.

Further, in the course layout display area 84 of the display, the position of the hole cup 84f is displayed on the basis of the correction information from the fixed station 12, as shown in FIG. Thereby, the position of the hole cup provided at an arbitrary position on the green can be confirmed on the display (course layout display area 84) of the mobile station 10 mounted on the golf cart.

Further, in the example shown in FIG. 4, not only the golf cart on which the own mobile station 10 is mounted but also the positions of other golf carts in the hole are displayed in the course layout. As described above, in order to display the position of each golf cart in the hole, the fixed station 12 transmits the position information of each golf cart with a unique address added thereto.

The mobile receiving section 30 decodes the address added to each position information and notifies the arithmetic processing section 32 of the address. The arithmetic processing unit 32 displays the position of the golf cart in the course layout displayed in the course layout display area 84 according to each position information.

In addition, the display unit 28 displays the position of the golf cart based on the position information to which the address corresponding to the own station is added according to the instruction from the arithmetic processing unit 32.
Attributes (colors, shapes, etc.) different from the position display of other golf carts are added and displayed.

Further, the arithmetic processing section 32 calculates the relative distance between the golf carts based on the position information of each golf cart, and displays a number indicating the distance in the course layout display area 84. May be. This makes it possible to know the distance to the player who is playing in the previous set of the same hole, so that it is possible to prevent the player from hitting the ball near the play place of the previous set due to misidentification of the distance. Security can be increased.

Next, a method of measuring the direction of arrival of the mobile station transmission radio wave 50 in the fixed receiving units 42 and 44 will be described. Each of the fixed receiving units 42 and 44 has two receiving antennas 60 and 62 as shown in FIG. The receiving antennas 60 and 62 are horizontally installed at a predetermined distance. The two receiving antennas 60 and 62 are connected to a phase comparing unit 68 via receiving circuit units 64 and 66, respectively. The phase comparing section 68 measures the phase difference between the radio waves received by the two receiving antennas 60 and 62, and passes the measured phase difference to the signal processing section 40.

FIG. 5 shows two receiving antennas 6 provided in one fixed receiving section 42 (or fixed receiving section 44).
0 and 62 are shown. The mobile station transmission radio wave 50 transmitted from the mobile transmission unit 22 is received by the reception antennas 60 and 62, but the radio waves input to the reception antennas 60 and 62 are transmitted from the fixed reception units 42 and 44 to the mobile transmission unit. If the distance to 22 is sufficiently longer than the antenna interval L1,
It can be approximated to what is input almost in parallel. Therefore, the arrival direction of the radio wave is determined by the mobile transmitting unit 22 and the receiving antennas 60 and 6.
2 is represented by an angle θ shown in FIG.

When the angle θ is 90 °, the two receiving antennas 60 and 62 receive radio waves at the same time, so that there is no phase difference between the radio waves received by the two receiving antennas 60 and 62.

When the angle θ is other than 90 °, for example, when a radio wave arrives from the direction shown in FIG.
The propagation path becomes longer by L2 = L1 × sin θ than the radio wave input to the channel. The difference between the lengths of the transmission paths is the phase difference between the radio waves received by each of the receiving antennas 60 and 62. The relational expression (1) in this case is shown below.

Sin θ = λ · φ / 2πL1 (1) λ: wavelength, φ: phase difference of received radio waves The fixed receiving units 42 and 44 detect the arrival direction of radio waves based on the above-mentioned relational expression (1). Then, it notifies the signal processing unit 40.

Next, the mobile transmission unit 2 by the signal processing unit 40
2 (mobile station 10) will be described. The signal processing unit 40 acquires the arrival direction of the radio wave detected as described above in each of the two fixed receiving units 42 and 44. Here, the arrival direction of the radio wave detected by the fixed reception unit 42 is θ1, and the arrival angle of the radio wave detected by the fixed reception unit 44 is θ2. Further, the positions where the fixed receiving units 42 and 44 are installed are known, and the distance between them is L3.

The signal processing unit 40, as shown in FIG.
Arrival directions θ of radio waves at the two fixed receiving units 42 and 44
The position of the mobile station 10 (the mobile transmission unit 22), that is, the position of the golf cart in the hole, can be determined based on triangulation from 1, 1 and 2 and the distance L3 between the fixed reception units 42 and 44.

In the present embodiment, the fixed station 12 has two fixed receiving units 42 and 44, but the present invention is not limited to this. It is also possible to improve the accuracy by providing the fixed receiving units described above and measuring the position of the mobile station 10 with each of them.

Further, although two antennas are used as a set in the fixed receiving units 42 and 44, the present invention is not limited to this, and three or more antennas are used and a plurality of antenna combinations are used. It is also possible to improve the angle measurement accuracy by examining the phase difference caused by the angle.

Further, by arranging the receiving antenna not only in the horizontal direction but also in the vertical direction as shown in FIG. 7, not only the angle θ indicating the arrival direction of the radio wave in the horizontal direction but also the height direction The angle α indicating the direction of arrival can be measured.

In this case, as shown in FIG. 7, in the horizontal direction, the angle can be measured by two sets of the receiving antennas 60a and 62a and the combination of the receiving antennas 60b and 62b. As for the direction, the angle can be measured by two sets of receiving antennas, that is, the combination of the receiving antennas 62a and 62b and the combination of the receiving antennas 60a3 and 60b.

The signal processing unit 40 performs the position detection based on the arrival angle θ in the horizontal direction based on the arrival angle α in the height direction measured by the phase comparison unit 68 in the same manner as described above. The position of the mobile station 10 (golf cart) in the height direction is detected. The signal processing unit 40 transmits the position information corresponding to the detected position in the height direction as the fixed station transmission radio wave 52 by the fixed transmission unit 46.

When the position measurement in the vertical direction is performed in this manner, the signal processing unit 40 also moves the correction information about the height difference of the position of the hole cup provided on the green as the fixed station transmission radio wave 52 by the fixed transmission unit 46. Bureau 10
Send to

In the mobile station 10, the arithmetic processing unit 32 uses the position information and the correction information in the height direction to
The height difference between the current position of the golf cart and the hole cup on the green is calculated. And, as shown in FIG.
The display unit 28 displays a number indicating the height difference from the current position to the hole cup in the height difference display area 86 in the display screen of the display.

The display contents of the course layout display area 84 may be changed so that the height difference between the current position and the hole cup becomes clear. For example, when the display switching of the course layout display area 84 is instructed by an instruction key (not shown), the reproducing unit 26 reproduces the layout information representing the cross section of the hole from the recording medium 24, and the display unit 28 displays the course layout. Area 8
At 4, the course layout of the hole cross section is displayed.
Also in the layout display of the hole cross section, the current position of the golf cart, the position of the hole cup, and the like are displayed.

In the course layout display area 84 of the display, the wind direction and wind speed at the current golf cart position can be displayed in the wind direction display area 87. That is, the wind measuring unit 48 is provided in the fixed station 12 provided near the green, and the information on the wind direction and the wind speed measured in the fixed station 12 is transmitted to the mobile station 10 together with the position information to be displayed. good.

In the above description, the target position to be measured for the distance from the current position of the golf cart is described as a hole cup on the green. Hazard, tree, O
Any position in a hole such as the B line can be targeted. In this case, for the target that can be specified as each target position, the information on the position in the hall is stored in the recording medium
The distance from the current position to each target position can be calculated in the same manner as in a hole cup by recording the information as layout information. The display shows the distance to the arbitrarily selected target position in the remaining distance display area 85.
Is displayed in the same manner as.

In the above-described embodiment, the fixed station 12 is installed near the green in the hall. However, based on the distance between the mobile station 10 and the fixed station 12, If the position can be obtained, it is not always necessary to be near the green, and the mobile station 1
It can be installed at any position where transmission and reception of radio waves with 0 are possible.

The mobile station 10 is not limited to the structure mounted on the golf cart, but may be a portable type that can be easily carried by a player. Furthermore, the mobile transmission unit 22 of the mobile station 10 has been described as transmitting a radio wave unique to a hole, for example, a radio wave of a specific frequency assigned to each hole. Alternatively, as another method, identification information (ID) unique to the hall may be given to a radio wave to be transmitted, and the ID and the arrival angle of the radio wave are simultaneously identified in the fixed station 12, so that a single radio wave can be used.

The caddy system according to the present invention is basically used by a plurality of competitors and displays the position of the golf cart in the course and the distance to the hole cup. Since it does not indicate the distance from the vehicle and does not provide personal benefit, it has the same function as the distance display marker installed in the course and can be used for private sports.

In addition to the use of the caddy, not only when the caddy is used for the competition but also when playing without the caddy, or when the caddy with the caddy has a low level of proficiency, the information on the course layout obtained from the caddy and caution when playing Items to be performed can be easily obtained. For this reason, it is possible to avoid a problem that the service for the player deteriorates or delay the progress of the play.

[0076]

As described above in detail, according to the present invention, radio waves are transmitted and received between a mobile station mounted on a golf cart and a fixed station installed in a hole (for example, near the green). Then, the position of the mobile station in the course is obtained, the current position is displayed together with the layout of the hole, and the current position in the hole is obtained, so that the distance from this current position to the target position (hole cup or the like) is obtained. Since it is displayed as it is, it is possible to smoothly progress the golf play, complement the caddy's skill level, and improve the service to the player.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of a caddy system according to an embodiment of the present invention.

FIG. 2 is a block diagram showing a detailed configuration of fixed receiving units 42 and 44 shown in FIG.

FIG. 3 is a diagram for explaining the installation situation of the fixed station 12 shown in FIG. 1, and showing a layout of a plane of one hole.

FIG. 4 is a diagram showing an example of an operation panel provided in the mobile station 10 shown in FIG.

FIG. 5 shows one fixed receiving unit (or fixed receiving unit 4).
The figure which shows the two receiving antennas 60 and 62 provided in 4).

FIG. 6 is a diagram for explaining a method of obtaining a position of the mobile station 10 (mobile transmission unit 22) in the signal processing unit 40.

FIG. 7 is a diagram showing an example of a receiving antenna arranged not only horizontally but also vertically.

[Explanation of symbols]

 Reference Signs List 10 mobile station 12 fixed station 20 hole selection instruction input section 21 distance measurement instruction input section 22 mobile transmission section 24 recording medium 26 playback section 28 display section 30 mobile reception section 32 arithmetic processing section 40 ... Signal processing units 42,44 ... Fixed receiving unit 46 ... Fixed transmitting unit 48 ... Wind measuring unit 60,62 ... Receiving antenna 64,66 ... Receiving circuit unit 68 ... Phase comparing unit

Claims (3)

[Claims] 1. A caddy system comprising a fixed station installed in a hole of a golf course and a mobile station mounted on a golf cart running in the hole, wherein the fixed station is A plurality of fixed receiving means for receiving the transmitted radio wave and detecting the direction of arrival of the radio wave, the arrival directions of the radio waves detected by the plurality of fixed receiving means, and the positional relationship between the plurality of fixed receiving means. And processing means for obtaining the position of the mobile station; and fixed transmitting means for transmitting position information indicating the position obtained by the processing means to the mobile station, wherein the mobile station comprises: A mobile transmitting unit that transmits a radio wave to the mobile station; and a mobile receiving unit that receives position information transmitted from the fixed transmitting unit of the fixed station with respect to the radio wave transmitted by the transmitting unit. Based on the position information received by the movement receiving means, an arithmetic processing means for calculating a remaining distance from a current position to a target position, and the position information received by the movement receiving means together with the layout of the running hole. A caddy system comprising: display means for displaying a current position on a layout obtained based on the layout and a remaining distance obtained by the arithmetic processing means. 2. The caddy system according to claim 1, wherein said mobile transmitting means of said mobile station emits a radio wave specific to said hall. 3. The caddy system according to claim 1, wherein the mobile transmission means of the mobile station transmits a radio wave including identification information unique to a golf cart on which the mobile station is mounted.