JPH04124486U - Mobile navigation system - Google Patents

Abstract

(57) [Summary] [Purpose] The purpose of this invention is to enable navigation information to be obtained even at a location far from the moving object using a navigation system mounted on the moving object. [Structure] Inside the housing 1, a GPS unit 3 is housed together with an AV media group (a CD player 5 and a cassette deck with tuner 6). This GPS
The unit 3 is configured to be detachable from the housing 1. Even when the detachable GPS unit 3 is removed from the housing 1, it functions independently and is capable of calculating and outputting navigation information. Therefore, the user can obtain navigation information at any location by carrying the detachable GPS unit 3 when leaving the moving body.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This idea is a navigation system for providing navigation information for moving objects. More specifically, based on radio waves received from multiple satellites, A system for providing navigation information including current location information of mobile objects. Regarding.

0002

[Conventional technology]

Traditionally, it has been used to guide the movement of various moving objects such as automobiles, ships, and aircraft. Provide navigation information (current position, speed, acceleration, heading, altitude, etc.) Various navigation systems have been proposed. such navigation Among navigation systems, it is said to be able to provide highly accurate navigation information. The effectiveness of various GPS positioning devices has been attracting attention. Here, the GPS measurement The positioning device is the Global Positioning System (Global Positioning S The current position of a mobile object is determined by receiving radio waves from multiple satellites belonging to the It is designed so that you can know the location. Below, this GPS positioning device Explain the principle of positioning.

0003 GPS positioning is when radio waves propagate from an artificial satellite whose location is already known. By measuring the distance between the satellite and the moving object, the Then, the current position of the moving object is calculated. 3 in Figure 9 The principle of positioning based on received radio waves from artificial satellites A to C will be explained below. now , once you know the distance from one satellite (for example, satellite A) to the moving object, you can The current position of a moving object is based on the distance from satellite A to the moving object, with satellite A as the center. It will exist on the surface of a sphere with a radius of A. The second artificial satellite For example, if the distance from artificial satellite B) to the moving object is known, the current position of the moving object can be calculated from the artificial satellite B). On the line of intersection between a sphere of radius A centered on satellite A and a sphere of radius B centered on artificial satellite B will exist in Furthermore, from the third satellite (for example, satellite C) Once the distance to the moving object is known, the current position of the moving object can be calculated using the intersection line of the above spheres and the artificial It will exist on the intersection with a sphere of radius C centered on satellite C. This intersection is There are two solutions, but if you choose one (the other is a realistically impossible solution), This becomes the current position of the moving object.

0004 The distance from each satellite to the mobile object is determined by the time each satellite transmits radio waves. This can be easily determined from the time difference between the time when the radio wave was received by the mobile object. Besides that In order to It transmits timer information indicating the time interval on radio waves. Similarly, mobile objects are also equipped with timers. When receiving radio waves from an artificial satellite, the transmission time included in the radio waves Determine the time difference between the information and the reception time measured by the mobile timer, and use it based on that time difference. Then, the distance between the satellite and the moving object is calculated.

[0005] Note that there is an error between the timer on the satellite side and the timer on the mobile object. Therefore, accurate propagation time of radio waves cannot be measured. Therefore, time correction is usually performed. In order to do so, the current position is calculated based on the radio waves received from four artificial satellites. There is.

[0006] By the way, a device for providing map information (for example, a CD player or CD-ROM) and a display device for displaying calculated navigation information ( For example, in combination with AV media groups such as liquid crystal display devices and CRT displays) Conventional GPS positioning devices in the form used are fixedly attached to moving objects. .

[0007]

[Problem that the idea aims to solve]

As mentioned above, navigation in the form used in combination with conventional AV media groups tion system, since all its components are fixedly attached to the moving object. , navigation information could only be obtained from moving objects. Therefore and enjoyed mountain climbing, cycling, pleasure boating, etc. away from moving objects. navigation information from the navigation system installed in the vehicle. can't get it. If you want to obtain navigation information in such cases, use , there was a problem that a portable GPS positioning device had to be purchased separately. .

[0008] Therefore, the purpose of this invention is to provide navigation not only for moving objects but also for other places. A highly convenient navigation system that allows you to obtain information on It is to provide.

[0009]

[Means to solve the problem]

The navigation system according to this invention receives radio waves from multiple artificial satellites. to measure navigation information including at least current position information of the mobile object based on navigation information measurement means and related navigation information measurement means. AV media for providing various audiovisual information including navigation information. It is equipped with a group of deer. Navigation information measurement means and AV media group , housed in one housing. And at least the navigation information The information measuring means is configured to be detachable from the housing. When extracted, it functions independently to provide navigational information visually or audibly. Output in a recognizable manner.

0010

[Effect]

In this device, navigation information is usually obtained within a moving object. However, when moving away from the moving object, the navigation information measurement means must be removed from the housing. Is it a means of measuring navigation information at any location by being extracted from and carried around? Navigation information can be obtained from

[0011]

【Example】

FIG. 1 is a schematic block diagram showing the configuration of an embodiment of this invention. In the figure , inside the housing 1 there are an antenna probe 2 and a detachable GPS unit 3. , controller 4, CD player 5, and cassette deck 6 with tuner are stored. has been done. Furthermore, the navigation system of the embodiment shown in FIG. A roof antenna 7, a display 8, and a speaker 9 are provided outside the group 1. Arrival The removable GPS unit 3 is connected to the roof antenna 7 via the antenna probe 2. has been done. The controller 4 is connected to a removable G via a data bus 10 and a power line 11. It is connected to PS unit 3. The controller 4 also includes a CD player 5, It is connected to a cassette deck with tuner 6, a display 8, and a speaker 9. moreover , the controller 4 is powered by an external power source (for example, a car battery if the moving object is a car) is connected to. The controller 4 includes a CD player 5, a cassette player with a tuner, This is for controlling the operations of the switch 6, display 8, and speaker 9. That is, The controller 4 receives navigation information obtained from the detachable GPS unit 3. It is superimposed on the map information read out from the CD player 5 and given to the display 8. Also, The controller 4 is obtained from a CD player 5 or a cassette deck 6 with a tuner. The audio signal is given to the speaker 9. Furthermore, the controller 4 is connected to an external power source. The obtained power is used to power the removable GPS unit 3, CD player 5, and cassette disc with tuner. 6, display 8 and speaker 9.

0012 What is important in the navigation system shown in Figure 1 is the area surrounded by dotted lines. That is, the detachable GPS unit 3 is configured to be detachable from the housing 1. That is what we are doing. The removable GPS unit 3 was removed from the housing 1. It has become portable and provides a navigation system even in locations far away from the mobile device. It is possible.

[0013] FIG. 2 is a block diagram showing a more detailed configuration of the detachable GPS unit 3 shown in FIG. It is a diagram. In the figure, an antenna 31 is connected to a receiving circuit 32. Receiving The radio waves from the artificial satellite received by the signal circuit 32 are given to the extraction circuit 33. Lottery The output circuit 33 extracts only the received signal from a predetermined artificial satellite. to the extraction circuit 33 The received signal thus extracted is provided to the decoder 34. The decoder 34 decodes the received signal. Decipher the various information contained in the issue. The output of the decoder 34 is sent to the arithmetic circuit 35. Given. Furthermore, time information from a timer 37 is given to the arithmetic circuit 35 . performance The arithmetic circuit 35 receives the information decoded by the decoder 34 and the information given from the timer 37. Various navigation information (current position information, speed information) , acceleration information, heading information, altitude information, etc.). Arithmetic result of the arithmetic circuit 35 The result is output to the data bus 10 and also provided to the liquid crystal display 36. liquid The crystal display 36 is further given time information from a timer 37. LCD display The device 36 receives the calculation results of the calculation circuit 35 when the detachable GPS unit 3 is carried. and the time information from the timer 37 is displayed, for example, in characters. Furthermore, detachable The type GPS unit 3 has a built-in battery 38. Removable GPS unit When the battery 38 is removed from the housing 1, each circuit is powered by the battery 38. Operating power is supplied to the

[0014] FIG. 3 is a perspective view showing the external configuration of the embodiment shown in FIGS. 1 and 2. FIG. In the diagram Housing 1 is divided into four rooms, and each room is equipped with a detachable GPS. Unit 3, controller 4, CD player 5, and cassette deck with tuner 6 is stored. FIG. 3 shows a removable GPS unit 3 from one room of the housing 1. is shown extracted. The removable GPS unit 3 has a An antenna 31 extending along the forward direction is provided. In addition, a detachable GPS unit is also available. A guide groove 301 extending along the depth direction is formed on the side surface of the knit 3. ing. Furthermore, on the side of the removable GPS unit 3, the upper part of the guide groove 301 is An engagement groove 302 is coupled to a portion. The guide groove 301 and the engagement groove 302 are They are formed symmetrically on both the left and right sides of the detachable GPS unit 3. Removable GPS unit A liquid crystal display 36 is formed on the front surface of the knit 3, and a liquid crystal display 36 is formed near both ends of the liquid crystal display 36. A pair of detachable arms 303 are formed.

[0015] On the other hand, the room in which the removable GPS unit 3 is housed in the housing 1 has An antenna probe 2 extending in the depth direction is formed on the upper surface thereof. This Ann The tena probe 2 is connected to a roof antenna 7 outside the housing. Also , a plan extending parallel to the antenna probe 2 is provided on both the left and right sides of the antenna probe 2. An internal bracket 101 is formed. This guide bracket 101 can be attached or detached. When the type GPS unit 3 is housed in the housing 1, the antenna 31 is direction so that the antenna 31 is accurately connected to the antenna probe 2. Ru. Thereby, the roof antenna 7 is relayed to the detachable GPS unit 3. In addition, the room in the housing 1 where the removable GPS unit 3 is stored has a A positioning member 102 and a locking fitting 103 are formed on the side surface. position The determining member 102 extends parallel to the depth direction of the housing 1. Removable GP When the S unit 3 is housed in the housing 1, the positioning member 102 is used as a guide. It fits into the groove 301 and positions the removable GPS unit 3 in the vertical direction. Ma Additionally, the positioning member 102 is inserted into the housing 1 when the removable GPS unit 3 is pushed into the housing 1. When the removable GPS unit 3 is stored, slide it inside the guide groove 301. Make your work smoother. The lock fitting 103 is attached to the removable GPS unit 3 on the housing. When it is completely pushed into the inside of the ring 1, it will fit inside the engaging groove 302. , locks the detachable GPS unit 3. This allows the removable GPS unit to 3 is prevented from easily coming off from the housing 1. Both left and right sides of housing 1 A mounting fitting 104 is provided at the upper end of the holder. This mounting bracket 104 is Fixing the housing 1 to a predetermined part of a moving object (for example, a car dashboard) It is intended for installation.

[0016] FIG. 4 is a perspective view showing the back of the detachable GPS unit 3 shown in FIG. In the figure At the back of the detachable GPS unit 3, there is a connector 304 and a positioning boss 3. 05 is provided. The connector 304 connects the removable GPS unit 3 to the housing. A group of terminals provided on the side surface of the housing 1 in the depth direction when housed in the housing 1. (not shown). As a result, the removable GPS unit 3 It is connected to the controller 4 via a bus 10 and a power line 11. positioning boss 305, the removable GPS unit 3 is pushed into the housing 1 more than necessary. In order to prevent This allows the positioning of the detachable GPS unit 3 in the depth direction. Ru.

[0017] FIG. 5 is a perspective view showing the general configuration of the display device 8 shown in FIG. 1. As shown in FIG. This display 8 , to the controller 4 via terminals (not shown) formed on the back of the housing 1. Connected.

[0018] Next, the operation of the embodiment shown in FIGS. 1 to 5 will be explained. First, the removable unit 3 When stored in the housing 1, the removable unit 3 can be used to perform various navigation functions as required. The game information is read out from the CD player 5 in the controller 4. After being superimposed with the graphic information, it is displayed on the display 8. Also, navigation information is required. If it is not necessary, it is also possible to display TV broadcasts on display 8, and , audio information played on the CD player 5 or the cassette deck with tuner 6. For example, it is also possible to output audio (music) from the speaker 9.

[0019] Next, in the embodiment shown in FIGS. 1 to 5, the removable GPS unit 3 is attached to the housing 1. You can take it out and carry it around. Moreover, this detachable GPS unit 3 , a built-in antenna 31, and a built-in battery 38. Therefore, detachable Even if the GPS unit 3 is removed from the housing 1, it functions independently and can be used for navigation. It is possible to calculate the application information. The calculated navigation information is The information is provided to the user via the crystal display 36. Therefore, the user is away from the mobile object. If you want to use this device, carry this detachable GPS unit 3 and use it to navigate anywhere. system, and can prevent disasters such as shipwrecks. Wear.

[0020] FIG. 6 shows the structure of a navigation system for a mobile body according to another embodiment of this invention. FIG. 2 is a schematic block diagram showing the configuration of the system. In the figure, the configuration of this embodiment has the following points: Except for this, it is similar to the embodiment shown in FIG. 1, and corresponding parts are given the same reference numerals. , the explanation thereof will be omitted. The detachable GPS unit 3' used in this embodiment is A CD player for providing map information and for playing audio information such as music. It has a built-in controller. Therefore, a single CD player 5 as shown in FIG. DAT (Digital Audio Tape Recorder) 12 is housed inside the housing 1.

[0021] FIG. 7 is a block diagram showing a more detailed configuration of the detachable GPS unit 3' shown in FIG. This is a diagram. In the figure, the detachable GPS unit 3' shown in FIG. 7 is replaced by the detachable GPS unit 3' shown in FIG. In addition to the configuration of the detachable GPS unit 3, a CD player 39 is added. The playback output of the CD player 39 is given to the arithmetic circuit 35 and also to the data bank. 10.

[0022] FIG. 8 is a perspective view showing the external configuration of the embodiment shown in FIGS. 6 and 7. FIG. In addition, FIG. 8 shows the state in which the removable GPS unit 3' is removed from the housing 1. It shows. The removable GPS unit 3' is the removable GPS unit 3 shown in FIG. In addition to the configuration input for the CD player 39 and the stereo headphone for the CD player. It is equipped with a connector jack 306. On the other hand, the housing 1 has a CD player as shown in FIG. A DAT 12 is housed in place of the carrier 5. Other configurations are implemented as shown in Figure 3. Same as the example, corresponding parts are given the same reference numbers and their explanations are omitted. .

[0023] In the embodiment shown in FIGS. 6 to 8, the removable GPS unit 3' is removed from the housing 1. When taken out and carried, a CD on which map information is recorded is placed in the CD player 39. When inserted, the map information played by this CD player 39 is transferred to the arithmetic circuit 35. given to. Therefore, the removable GPS unit 3' is the removable GPS unit 3' shown in FIG. Compared to the PS unit 3, more detailed navigation information is displayed on the LCD display 36. It will be possible to show. In addition, the detachable GPS unit 3' is equipped with a stereo headphone. If you insert headphones into the headphone jack 306, the music will be played by the CD player 39. You can also listen to music information etc.

[0024] In the embodiment shown in Figs. 6 to 8, the detachable GPS unit 3' includes a CD player. However, other AV media (such as cassette decks, DAT ) may be built into a removable GPS unit.

[0025] In addition, the AV media stored in the housing 1 include a CD player, a tuner, etc. Not only cassette decks and DATs, but also other devices (such as VTRs and video tapes) It may also be possible to store an audio disc player, etc.).

[0026] Furthermore, in the embodiment described above, the cassette deck 6 with tuner, the DAT12 is not linked to the removable GPS units 3 and 3'; Of course, it is also possible to use it by clicking. For example, a cassette deck with tuner 6 or DAT12 and send it to the detachable GPS units 3 and 3'. You may do so.

[0027] Furthermore, in the embodiments described above, the Navigation information is displayed on the display 8, but audio information and Alternatively, the audio may be output from the speaker 9.

[0028]

[Effect of the idea]

As described above, according to this invention, the navigation information measuring means is It can also be used in conjunction with a group of AV media stored in the housing, or it can be extracted from the housing. It can also be used alone. As a result, if the user leaves the mobile object, , carry navigation information measurement means to obtain navigation information at any location. can be done. Therefore, it is an extremely convenient mobile navigation system. You can get tem.

[Brief explanation of drawings]

FIG. 1 is a schematic block diagram showing the configuration of an embodiment of this invention.

2 is a block diagram showing a more detailed configuration of the detachable GPS unit 3 shown in FIG. 1. FIG.

FIG. 3 is a perspective view showing the external configuration of a navigation system according to an embodiment of the invention.

4 is a perspective view showing the back side of the detachable GPS unit 3 shown in FIG. 3. FIG.

5 is a perspective view showing the appearance of the display device 8 shown in FIG. 1. FIG.

FIG. 6 is a schematic block diagram showing the configuration of another embodiment of the invention.

7 is a block diagram showing a more detailed configuration of the detachable GPS unit 3' shown in FIG. 6. FIG.

FIG. 8 is a perspective view showing the external configuration of a navigation system according to another embodiment of the invention.

FIG. 9 is a schematic diagram for explaining the principle of a positioning system using GPS.

[Explanation of symbols]

1 Housing 3,3' Removable GPS unit 4 Controller 5 CD player 6 Cassette deck with tuner 8 Display 9 Speaker

Claims (3)

[Scope of utility model registration request] 1. A navigation system for providing navigation information for a mobile object, the navigation system for measuring navigation information including at least current position information of the mobile object based on radio waves received from a plurality of artificial satellites. Information measuring means, and an AV media group provided in association with the navigation information measuring means for providing various audiovisual information including the navigation information, the navigation information measuring means and the AV media group comprising: The navigation information measuring means is housed in one housing, and at least the navigation information measuring means includes:
The mobile object is configured to be detachably attached to the housing, and the navigation information measuring means functions independently when extracted from the housing and outputs the navigation information in a visually or aurally recognizable manner. navigation system. 2. The navigation system for a moving body according to claim 1, wherein the navigation information measuring means is configured to be detachably attached to a part of the AV media group. 3. A navigation system for a mobile object according to claim 2, wherein a part of said AV media group integrated with said navigation information measuring means includes map information providing means for providing map information.