Motor vehicles – With means for controlling operation responsive to... – Having controlling means adapted to interact with stationary...
Patent
1987-11-30
1990-09-11
Marmor, Charles A.
Motor vehicles
With means for controlling operation responsive to...
Having controlling means adapted to interact with stationary...
180169, 318587, 36442404, B60T 716
Patent
active
049554476
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
The present invention relates to compound type guiding method and apparatus for automatically guiding movement of a vehicle.
BACKGROUND ART
Heretofore, as a method of automatically guiding the movement of a moving body there are already known .circle.1 a guiding method with the aid of a guiding line, .circle.2 a guiding method with the aid of the dead reckoning and .circle.3 a guiding method with the aid of measurement using radio wave.
Features of these guiding methods are noted in the following table.
TABLE 1 ______________________________________
method of example of
guiding advantage disadvantage application
______________________________________
.circle.1
(1)Measuring accu-
(1)Due to need
unmanned
guiding racy relative to
of laying the
conveyance
line position and guiding line,
direction is it is difficult
highest among to deal with
three methods.
variation of a
working area.
.circle.2 dead
(1)There is no need
(1)There are aircraft
reckoning
of arrangment of
accumulative ship
any outside error and
reference and an
acceleration
apparatus can be
error and it is
designed in a difficult to
compact structure.
apply it to a
(2)Variation of a
vehicle.
working area can
be easily dealt
with.
.circle.3
(1)Accuracy is kept
(1)There is need
ship
measure-
constant regard-
of installing an
ment with
less of distance
oscillator on the
the use of measurement.
ground (outside
of radio
(2)Since it is not
a working area).
wave affected by (2)It can be used
acceleration, it
only within a
can be easily scope of visible
applied to vehicle.
distance.
(3)Variation of a
working area can
be easily dealt
with.
______________________________________
With respect to the guiding of the movement of a vehicle, the method .circle.1 is the best but this method requires that the guiding line is relocated in the case where a working area varies. Accordingly, it is difficult to employ the method in the case where a working area varies occasionally.
On the other hand, the method .circle.3 which can be utilized for ship can satisfactorily deal with variation of a working area but its guiding accuracy is considerably lower than that of the method .circle.1 .
The present invention has been made while taking into account the fact that the guiding method with the aid of a guiding line is excellent in guiding accuracy and the guiding method with the use of radio wave for measurement is excellent in versatility of variation of a working area and its object resides in providing compound type guiding method and apparatus which assure that advantages of the aforesaid methods can be effectively exhibited when movement of a vehicle is guided in a certain special working area.
DISCLOSURE OF THE INVENTION
According to one aspect of the present invention there is provided a method of guiding the movement of a vehicle in a working area including a target passage immovable area where a high guiding accuracy is required and a target passage variable area where changing of a moving passage is required, characterized in that the vehicle is caused to move in accordance with a guiding method with the aid of a guiding line in the target passage immovable area and the vehicle is caused to move in accordance with a guiding method with the aid of radio wave for measurement in the target passage variable area where the vehicle leaves the guiding line and then returns to the guiding line again.
Further, according to other aspect of the present invention there is provided an apparatus for guiding the movement of a vehicle in a working area including a target passage immovable area where a high guiding accuracy is required and a target passage variable area where changing of a moving passage of the vehicle is required, characterized in that said apparatus comprises a guiding line for generating a magnetic field for the purpose of guiding, the guiding line being laid in the target passage immovable area where a high guidin
REFERENCES:
patent: 4231093 (1980-10-01), La Vance et al.
patent: 4344498 (1982-08-01), Lindfors
patent: 4665369 (1987-05-01), Faller et al.
patent: 4700301 (1987-10-01), Dyke
patent: 4780817 (1988-10-01), Lofgren
Hashimoto Haruo
Ono Toyoichi
Culbreth Eric
Kabushiki Kaisha Komatsu Seisakusho
Marmor Charles A.
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