JPH04238218A - Portable type navigation system - Google Patents

Abstract

PURPOSE:To effectively utilize a navigation system showing the position of a vehicle itself on a map. CONSTITUTION:In a navigation system which has a controller 1 performing the map matching based on signals from at least a bearing sensor and a vehicle speed sensor and the map data and a display section 2 displaying the data processed by the controller 1 and shows the geographical position of a vehicle itself, at least the controller 1 is made removable from the vehicle and portable.

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 in order to effectively utilize the navigation system.

0002

2. Description of the Related Art FIG. 3 is a diagram showing a conventional navigation system. Note that similar components are represented by the same reference numbers or symbols throughout the drawings. The configuration of this figure includes a control unit 1 that processes map matching based on signals from a direction sensor and a 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 explained. The control unit 1 performs the following cumulative calculations using signals from the direction sensor and vehicle speed sensor that are input from time to time.

0004

[Math 1]

Furthermore, in addition to the current location based on the map data obtained by the control section 1, the direction and distance to the destination, estimated time of arrival, etc. are displayed on the display section 2.

[0006]

[Problem to be Solved by the Invention] Incidentally, in recent years, the number of luxury passenger cars equipped with navigation systems has been increasing year by year, but in the near future similar navigation systems will be installed in vehicles used for logistics services such as home delivery services. is expected. This is because navigation systems are useful for guiding drivers to their destinations when driving on roads they have never traveled on before, and even those who are unfamiliar with the geography of the country are using them, especially due to the recent shortage of manpower. There are many cases where this is unavoidable, but in such cases, it is convenient because an instructor is not required or a short period of instruction is sufficient.

[0007] On the other hand, when driving within a limited area of responsibility, such as in delivery work, there is a possibility that the opportunity to use the navigation system decreases as the driver gets used to the area, that is, as he learns the roads. There is a problem with the navigation system taking up space in the passenger compartment when it is not in use. Therefore, in view of the above problems, the present invention provides a navigation system that improves usage efficiency.
The purpose is to provide a system.

[0008]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention makes a navigation system removable from a vehicle and portable. Detachment,
In order to make the navigation system portable, the navigation system is housed in a case, and the case is provided with cables and standardized connectors for transmitting and receiving signals from the direction sensor, vehicle speed sensor, etc. On the other hand, vehicles are equipped with orientation sensors, vehicle speed sensors, etc. connected to cables and standardized connectors.

[0009]

According to the portable navigation system of the present invention, the portable navigation system may be installed at the passenger seat, and electrical connections to the direction sensor, vehicle speed sensor, etc. are made by standard connectors. A portable navigation system can be used effectively when the driver is not used to the roads, but once the driver has become accustomed to the roads and no longer needs it, it can be easily removed and transported, so it can be installed in another vehicle and installed in another vehicle. Can be used by drivers who are not familiar with the road.

0010

DESCRIPTION OF THE PREFERRED EMBODIMENTS Examples 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 a first embodiment of the present invention. The configuration of this figure will be explained. Portable navigation shown in this figure
The system includes a portable navigation system case 100. The case 100 can be made detachable from the vehicle, and can be set in a class bezel, passenger seat, etc., and contains the control section 1 therein. The control unit 1 includes, for example, a geomagnetic sensor (S1), a vehicle speed sensor (
S2) and each wheel sensor such as a wheel speed sensor (S3),
Input the signal from the optical gyro (S4), etc., and calculate the current position by [Equation 1]
], and a high-speed drawing section 22 that controls high-speed drawing in order to display the image data and color data processed by the map matching section 21. Consists of a bit microcomputer.

The case 100 further includes a display section 2 that receives a video signal from the control section 1 and displays the video, and the display section 1 is, for example, a full-color LCD (Liquid
Crystal Display)
It is equipped with an infrared touch switch, and further includes a storage section 3 that forms a map database and consists of a CD-ROM or an IC card, and a man-machine interface 4 that encodes the operated switch and transmits it to the control section 1 and the display section 2. , includes an operation switch 5 for instructing the control unit 1 to update the display via the man-machine interface 4.

The case 100 also includes a cable 6 for receiving signals from the geomagnetic sensor (S1), vehicle speed sensor (S2), wheel speed sensor (S3), optical gyro (S4), etc. Connector 7 attached to the end and A to each part housed in the case 100.
It includes a power cable 8 for supplying power such as CC, illumination, GND, etc., and a connector 9 attached to the end of this power cable 10.

On the other hand, the vehicle has the geomagnetic sensor (S1)
, vehicle speed sensor (S2), and wheel speed sensor (S3),
A cable 10 to which an optical gyro (S4) etc. is attached at a predetermined position and transmits these signals;
a connector 11 that is coupled to the connector 7 at the end thereof;
Cable 12 for supplying power from the vehicle battery
The end of the cable 12 includes a connector 13 that connects with the cable 9.

Next, the operation of this embodiment will be explained. For example, each vehicle involved in delivery operations is pre-installed with the sensors necessary for the navigation system, since installation takes a considerable amount of time, and the connectors for the navigation system and sensors are standardized.
Facilitates electrical disconnection. The case 100 in which the navigation system is housed is structurally and electrically removable and portable, and can be used only when needed. When the vehicle is not in use, it can be removed from the vehicle and stored in an office or the like in preparation for the next use, improving usage efficiency and reducing the amount of investment required for the vehicle. In addition, the space inside the vehicle can be used more effectively.

FIG. 2 is a diagram showing a portable navigation system according to a second embodiment of the present invention. The illustrated configuration 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 aforementioned control section 1 and a storage section, and is removable from the vehicle and portable.

Similar to 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), etc. , a connector 7 attached to the end of the cable 6, a power cable 8 for supplying power such as Acc, illumination, and GND to each part housed in the case 100, and the power cable 1.
A connector 9 attached to the end of the 0 is included.

On the other hand, the vehicle has the geomagnetic sensor (S1)
, vehicle speed sensor (S2), and wheel speed sensor (S3),
A cable 10 to which an optical gyro (S4) etc. is attached at a predetermined position and transmits these signals;
a connector 11 that is coupled to the connector 7 at the end thereof;
Cable 12 for supplying power from the vehicle battery
The end of the cable 12 includes a connector 13 that connects with the cable 9.

The case 300 includes the display section 2 described above,
In addition to the man-machine interface 4 and the operation switch 5, there is also a radio device 30 that mainly communicates information such as work instructions and reports with the base station, and a service that images the work instructions from the radio device 30 on the display unit 2. An instruction visualization unit 31 and a rearward confirmation camera 33 that, when a back gear (R gear) signal is input to the man-machine interface 4, display the rear view of the vehicle as a movie on the display unit 2 using a CCD element or the like to improve safety. includes,
Fixed to the vehicle.

It should be noted that the visualization of the business instructions from the wireless device 30 may be performed via the control section 1 as an alternative to the business instruction movie visualization section 31. Also, the case 300
It receives color signals and video signals (S6) from the control unit 1 housed in the case 200, and also receives control signals (S7) and radio signals sent and received between the control unit 1 and the man-machine interfaces 4 and 9. A cable 17 for transmitting an imaging signal (S8) to be transmitted from 30 to the control unit, and a connector 18 attached to an end of the cable 17 are provided.

Correspondingly, the case 200 also includes a cable 1 for transmitting and receiving the plurality of signals (S6, S7, S8).
5, and a connector 16 attached to the end of the cable 15 and coupled to the connector 18. In the case of the second embodiment, the case 200 of the portable navigation system does not house a display unit as compared to the first embodiment, and the portable navigation system does not house a display unit, and the portable navigation system has a radio device 30 installed in the vehicle. The display section 2 of the other devices can also be used to avoid installing the display section 2 redundantly. Therefore, the cables 15 and 17 and the connectors 16 and 18 are connected to the display section 2.
It is provided for dual use.

[0021] In this way, the portable navigation system of this embodiment can also be integrated with electronic equipment already installed in the vehicle.

[0022]

As described above, according to the present invention, the navigation system is made portable, so that the navigation system can be used effectively.

[Brief explanation of the drawing]

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

FIG. 2 shows a portable navigation system according to a second embodiment of the invention.

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

[Explanation of symbols]

1...Control unit 2...Display section

Claims (1)

[Claims] 1. A control unit (1) that performs map matching processing based on at least signals from a direction sensor and a vehicle speed sensor and map data, and a display unit (2) that displays data processed by the control unit (1). ) and the navigation system that knows the geographical location of the vehicle itself on the map.
In the system, at least the control unit (1
) is removable and portable.