JP2697961B2 - Portable navigation system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a navigation system for determining the position of a vehicle on a map. In particular, the present invention refers to portability for effective use of a navigation system.

[0002]

2. Description of the Related Art FIG. 3 shows a conventional navigation system. Note that the same components are denoted by the same reference numerals or symbols throughout the drawings. The configuration of this figure includes a control unit 1 that processes map matching based on signals from the direction sensor and the vehicle speed sensor and map data, and a display unit 2 that displays data processed by the control unit 1. .

Next, the operation will be described. The control unit 1 performs the following cumulative calculation using the signals from the azimuth sensor and the vehicle speed sensor that are input momentarily.

[0004]

(Equation 1)

Further, in addition to the current position based on the map data obtained by the control unit 1, the distance to the destination in the direction of the destination, the estimated time of arrival, and the like are displayed on the display unit 2.

[0006]

In recent years, the number of high-end passenger cars equipped with a navigation system has been increasing year by year. However, in the near future, similar navigation systems will be mounted on vehicles for logistics business such as home delivery business. Is expected. This is because the navigation system is convenient in that it guides the driving route to the destination when driving on a road that the driver has not experienced before, especially for those who are geographically unfamiliar due to recent labor shortages. In many cases, it is necessary to do so, but in such a case, an instructor is unnecessary or short-term instruction is convenient.

[0007] On the other hand, in applications where the user travels in a limited area in which he / she is in charge, such as home delivery service, the chances of using the navigation system may decrease as the user becomes accustomed to the area in charge, ie, learns the roads. There is a problem that an unused navigation system occupies the space of the vehicle compartment. Accordingly, the present invention has been made in view of the above-described problems, and has a
The purpose is to provide a system.

[0008]

The present invention solves the above-mentioned problems by providing at least the calculated current position information of a vehicle.
Perform map matching based on map data
A control unit and a display for displaying data processed by the control unit
Unit that knows the geographical position of the vehicle itself on the map.
In a navigation system, the current position of the vehicle
A position detection sensor for detecting information, a power supply, and the control unit;
And a connector located between the plurality of connectors.
Common to vehicles, the control unit is detachable from the vehicle and
Portable navigator characterized by making it portable
Provide a gating system.

[0009]

According to the portable navigation system of the present invention, the installation location of the portable navigation system may be the passenger seat, and the electrical connection with the direction sensor, the vehicle speed sensor and the like is made by the connection of the standardized connector. If the driver is not accustomed to the road, the portable navigation system can be used effectively, but if the driver is accustomed to the road and can no longer use it, it can be easily removed and transported, so it can be mounted in another vehicle compartment and installed in another cabin. Can be used by drivers unfamiliar with the road.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 2 is a diagram showing a portable navigation system according to the first embodiment of the present invention. The configuration of this drawing will be described. The portable navigation shown in this figure
The system includes a portable navigation system case 100. The case 100 is detachable from the vehicle,
The setting place may be a class basel section, a passenger seat, or the like, and the control section 1 is included therein.
The control unit 1 receives signals from, for example, each wheel sensor such as a geomagnetic sensor (S1), a vehicle speed sensor (S2), and a wheel speed sensor (S3), and a signal from an optical gyro (S4), and derives a current position by [Equation 1]. A map matching unit 21 that performs matching with a map, and a high-speed drawing unit 22 that controls high-speed drawing to display image data and color data processed by the map matching unit 21 are included. Be composed.

The case 100 further includes a display unit 2 for receiving a video signal from the control unit 1 and displaying an image. The display unit 1 is, for example, a full-color LCD (Liquid Crystal D).
isplay), equipped with an infrared touch switch,
Further, a storage unit 3 comprising a CD-ROM or an IC card for forming a map database, a man-machine interface 4 for coding an operated switch and transmitting it to the control unit 1 and the display unit 2, and a man-machine interface 4 And an operation switch 5 for instructing the control unit 1 to update the display.

The case 100 includes a cable 6 for receiving signals from the geomagnetic sensor (S1), a vehicle speed sensor (S2), a wheel speed sensor (S3), an optical gyro (S4), and the like. A connector 7 attached to the end, a power cable 8 for supplying power such as Acc, illumination, GND, etc. to each part housed in the case 100, and a connector 9 attached to an end of the power cable 8 are provided. Included.

On the other hand, the geomagnetic sensor (S
1), a vehicle speed sensor (S2), and a wheel speed sensor (S2)
3) an optical gyro (S4) or the like is attached at a predetermined position, and a cable 10 for transmitting these signals;
At the end of 10, a connector 11 to be connected to the connector 7;
Cable 12 for supplying power from vehicle battery 12
And an end of the cable 12 includes a connector 13 for coupling to the cable 9.

Next, the operation of this embodiment will be described. For example, sensors required for the navigation system are installed in advance in each vehicle related to the home delivery service because it takes a considerable amount of time to mount the navigation system, and connectors for the navigation system and sensors are standardized,
Facilitates electrical desorption. The case 100 in which the navigation system is housed is both structurally and electrically removable and portable, and can be used only when needed. When not in use, it is removed from the vehicle and stored in an office or the like so that it can be prepared for the next use, so that the use efficiency can be improved and the investment amount for the vehicle can be reduced. Also, the space in the passenger compartment can be used effectively.

FIG. 2 shows a portable navigation system according to a second embodiment of the present invention. The configuration of this figure includes a case 200 that houses a portable navigation system, and a case 300 that houses electronic devices other than the portable navigation system.
The case 200 includes the above-described control unit 1 and a storage unit, and is detachable from a vehicle and portable.

As in the first embodiment, the case 200 includes a cable 6 for receiving signals from the geomagnetic sensor (S1), vehicle speed sensor (S2), wheel speed sensor (S3), optical gyro (S4) and the like. And a connector 7 attached to an end of the cable 6, a power cable 8 for supplying power such as Acc, illumination, GND, etc. to each part housed in the case 100, and an end of the power cable 10. And a connector 9 to be attached.

On the other hand, the geomagnetic sensor (S
1), a vehicle speed sensor (S2), and a wheel speed sensor (S2)
3) an optical gyro (S4) or the like is attached at a predetermined position, and a cable 10 for transmitting these signals;
At the end of 10, a connector 11 to be connected to the connector 7;
Cable 12 for supplying power from the battery of the vehicle
And an end of the cable 12 includes a connector 13 for coupling to the cable 9.

The case 300 includes, in addition to the display unit 2, the man-machine interface 4, and the operation switches 5 described above,
Radio equipment that mainly communicates information such as business instructions and reports with base stations
30, a business instruction imaging unit 31 for displaying the business instruction from the wireless device 30 on the display unit 2, and when a back gear (R gear) signal is input to the man-machine interface 4, the vehicle rear view is changed to a CCD element or the like. The display unit 2 includes a rear view confirmation camera 33 for making a movie to improve safety by being made into a movie, and is fixed to the vehicle.

The business instruction from the wireless device 30 may be visualized via the control unit 1 as an alternative to the business instruction video imaging unit 31. The case 300 has a color signal from the control unit 1 housed in the case 200,
The video signal (S6) is received, and the control signal (S6) transmitted and received between the control unit 1 and the man-machine interfaces 4 and 9 is transmitted.
7), a video signal (S) transmitted from the wireless device 30 to the control unit
8) and a connector 18 attached to an end of the cable 17.

In response, the case 200 also includes a cable 15 for transmitting and receiving the plurality of signals (S6, S7, S8);
A connector 16 is provided at the end of the cable 15 and mates with the connector 18. In the case of the second embodiment, the case 20 of the portable navigation system is used.
0 indicates that the portable type navigation does not accommodate the display unit as compared with the first embodiment,
It is also possible to avoid having the display unit 2 redundantly by also using the display unit 2 included in the apparatus. Therefore, the cables 15 and 17 and the connectors 16 and 18 are provided to serve also as the display unit 2.

In this way, the portable navigation system of the present embodiment can be coordinated with the electronic devices already mounted on the vehicle.

[0022]

As described above, according to the present invention, since the navigation system is of the portable type 0, the navigation system can be effectively used.

[Brief description of the drawings]

FIG. 1 is a diagram showing a portable navigation system according to a first embodiment of the present invention.

FIG. 2 is a diagram showing a portable navigation system according to a second embodiment of the present invention.

FIG. 3 is a diagram showing a conventional navigation system.

[Explanation of symbols]

 1. Control part 2. Display part

 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-61-149983 (JP, A) JP-A-64-88109 (JP, A) JP-A-2-88919 (JP, A) JP-A 61-149918 166582 (JP, A) Hikaru 2-58778 (JP, U)

Claims (1)

(57) [Claims] A control unit configured to perform a map matching process based on at least the calculated current position information of the vehicle and the map data; and a display unit configured to display data processed by the control unit. ), And a position detection sensor (S) that detects current position information of the vehicle in a navigation system that knows the geographical position of the vehicle itself on a map.
1, S2, S3, S4) and a power supply and the control unit (1)
Connectors (7, 11, 9, 13) located between
The connector (7, 11, 9, 13) is shared by a plurality of vehicles.
And the control unit (1) is detachable and holdable from the vehicle.
Portable navigation system characterized by being portable.