JP2003024390A - System for lending self-traveling motor-driven wheelchair - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a system for lending a self-traveling motor-driven wheelchair which is utilized in a short time in any place and fully utilized even by a juvenile. SOLUTION: The plurality of self-traveling motor-driven wheelchairs Cr (1)-Cr (amax ) are traveled by stationary circulation along a predetermined course so that the local concentration of the self-traveling motor-driven wheelchair is prevented. The self-traveling motor-driven wheelchair Cr (a) nearest to an operated portable calling terminal 3 is sent to the located position of the terminal 3. Then the user can call over the self-traveling motor-driven wheelchair Cr (a) a short time from any place.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a rental system for a self-propelled electric wheelchair, and particularly to avoid local concentration of the vehicle due to abandonment of the self-propelled electric wheelchair, etc. The present invention relates to a rental system for a self-propelled electric wheelchair that can be used for.

[0002]

2. Description of the Related Art As a vehicle renting system of this type, there have already been proposed several types related to bicycles, small electric vehicles, self-propelled electric wheelchairs and the like.

The most common one is a system in which a lending station is provided at a specific location to prepare a vehicle and the vehicle is lent out manually. However, if the number of rental stations is limited to one, there is a problem in terms of user convenience, and there are drawbacks in that it is difficult to collect vehicles due to frequent vehicle dumping.

[0004]

Therefore, as a method for solving such a problem, rental stations are installed at a plurality of places such as an amusement park and a theme park, and the vehicle is returned to another rental station near the destination. Such a method has been proposed. However, in reality, there are many cases where popularity is concentrated at specific event venues such as amusement parks and theme parks, and in accordance with this, vehicle returns are concentrated at specific rental stations. Has to be relocated to another rental station.

Further, as a technique for automating the lending and returning of a vehicle, for example, Japanese Patent Laid-Open No. 10-25497.
As disclosed in Japanese Patent Laid-Open No. 8-11 and 2000-113261, a vehicle sharing system using a terminal device has already been proposed. However, since the scope of automation is limited to lending and returning procedures even if tired, it cannot be freely used by young people who have difficulty controlling the vehicle itself, and it is used at amusement parks and theme parks. It was not enough for the system.

[0006]

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to solve the above-mentioned drawbacks of the prior art, to be able to use it anywhere in a short time, and even for a young person. It is to provide a rental system for a self-propelled electric wheelchair that can be used effectively.

[0007]

According to the present invention, there are provided a plurality of self-propelled electric wheelchairs which are drive-controlled by radio signals, and a centralized management computer which centrally manages the driving states of the plurality of self-propelled electric wheelchairs by radio signals. A rental system for a self-propelled electric wheelchair comprising a calling terminal for calling the self-propelled electric wheelchair by a radio signal, and in order to achieve the above-mentioned object, in particular, a central control computer is provided with the self-propelled electric wheelchair. Steady running control means for running the vehicle along a preset course in a steady and cyclic manner, and detecting a call signal from a calling terminal to select one of a plurality of self-propelled electric wheelchairs. , Vehicle dispatch control means for dispatching to the location of the calling terminal, and returning the self-propelled electric wheelchair to a preset course after the user confirms the boarding Having the configuration, characterized in that the two return control means is deployed.

The steady running control means of the centralized management computer drives and controls a plurality of self-propelled electric wheelchairs by radio signals to run the self-propelled wheelchairs constantly and cyclically along a preset course. When the user operates the calling terminal and outputs a radio signal, the vehicle dispatch control means that detects this radio signal takes over the processing from the steady travel control means, and a plurality of self-propelled vehicles that are cyclically traveling on the set course. One self-propelled electric wheelchair is selected from the electric powered wheelchairs and dispatched to the location of the calling terminal, that is, the boarding position of the user. Further, when it is confirmed that the user gets on the vehicle, the vehicle return control means takes over the processing from the vehicle dispatch control means, and guides the self-propelled electric wheelchair on which the user gets on the preset course from the riding position. And return. After that, the processing relating to the drive control of the self-propelled electric wheelchair is handed over again to the steady-state traveling control means, and the self-propelled electric wheelchair on which the user rides travels along a preset course.
In this way, multiple self-propelled electric wheelchairs are made to steadily and cyclically run along a preset course, eliminating the problem of self-propelled electric wheelchairs concentrating on a specific place. Therefore, the user can call and use the self-propelled electric wheelchair in a comparatively short time regardless of where the user is. In addition, since the self-propelled electric wheelchair runs only along the preset course under the drive control of the centralized management computer, no special driving operation is required by the user, and no one including the young or However, it is safe and easy to use. It is possible to set the course on which the self-propelled electric wheelchair runs, in particular,
When applying the rental system to an amusement park or a theme park, it is desirable to set a course by contacting a plurality of event venues.

In addition to these configurations, a vehicle current position detecting means for detecting the current positions of a plurality of self-propelled electric wheelchairs is additionally provided, and the steady running control means detects a preset course and vehicle current position. The rudder angle of the self-propelled electric wheelchair is corrected so that the movement trajectory of the self-propelled electric wheelchair matches the preset course based on the deviation from the current position of the self-propelled electric wheelchair detected by the means. It is possible to provide a rudder angle correction function.

More specifically, this rudder angle correction function adds the rudder angle to the right side substantially in proportion to the magnitude of the position deviation if the current vehicle position deviates to the left in the traveling direction with respect to the course. If the current position of the vehicle deviates to the right in the traveling direction with respect to the course, the steering angle is added to the left substantially in proportion to the magnitude of the positional deviation. With such a configuration, it becomes possible to drive the self-propelled electric wheelchair along the course extremely accurately, and even if the self-propelled electric wheelchair is circulated many times along the same course, the position shifts. There is no fear of accumulating errors.

The vehicle current position detecting means detects the current position based on, for example, a plurality of transmitting antennas arranged in a traveling area of a self-propelled electric wheelchair and electric field strengths of radio waves output from these transmitting antennas. It can be configured by a microprocessor on each self-propelled electric wheelchair to be sought and a transmission means on each self-propelled electric wheelchair that transmits the current position obtained by this microprocessor to a centralized management computer.

Since the electric field strength of the radio wave is attenuated as the distance from the transmitting antenna increases, the electric field strength of the electric waves from a plurality of transmitting antennas, for example, three transmitting antennas installed at appropriate distances. In short, it is possible to accurately obtain the current position of the self-propelled electric wheelchair by measuring the distance from each transmitting antenna.

A location detecting means for detecting the location of the calling terminal is also provided, and the vehicle dispatch control means selects a self-propelled electric wheelchair closest to the location detected by the location detecting means. It is possible to deploy an optimal vehicle selection function that dispatches to the location of the calling terminal.

According to this structure, the self-propelled electric wheelchair located in the immediate vicinity of the user is dispatched to the user, so that the calling time can be further shortened.

Further, the calling terminal is configured as a portable calling terminal, and the location detecting means outputs a plurality of transmitting antennas arranged in the traveling area of the self-propelled electric wheelchair and these transmitting antennas. A microprocessor on the calling terminal for obtaining the current position based on the electric field strength of the radio wave, and a transmitting means on the calling terminal for transmitting the current position obtained by the microprocessor to the centralized management computer as the location of the calling terminal. It can be configured by and.

The principle of identifying the current position by the location position detecting means is the same as that of the vehicle current position detecting means described above. By allowing the user to carry the calling terminal as a portable device, the user can freely call the self-propelled electric wheelchair no matter where the user is.

The steady running control means stores a plurality of courses for circularly running the self-propelled electric wheelchair, and a course is selectively set for each of the self-propelled electric wheelchairs. It is possible to provide a course setting function for each vehicle.

By setting a plurality of courses, the travel route of the self-propelled electric wheelchair is diversified, and the convenience of the user is further improved.

The stationary traveling control means detects a stop signal from the self-propelled electric wheelchair and stops all of the self-propelled electric wheelchairs set with the same course as the self-propelled electric wheelchair that outputs this stop signal. It is desirable to provide an anti-access function.

By applying such a configuration, problems such as abnormal approach of the self-propelled electric wheelchair traveling on the same course can be solved in advance.

Further, each of the self-propelled electric wheelchairs has an approach detection sensor for detecting an obstacle in front of the wheelchair, and when the approach detection sensor detects an obstacle, the instruction from the centralized management computer is ignored and the approach detection sensor is detected. It is possible to provide an emergency stop control means for holding the stopped state of the self-propelled electric wheelchair.

With such a configuration, the self-propelled electric wheelchair can be forcibly stopped by the determination processing on the side of the self-propelled electric wheelchair related to the detection of obstacles. Therefore, for example, even if there is an abnormality in the inter-vehicle distance of the self-propelled electric wheelchair traveling on the same course due to the slip of the drive wheel of the self-propelled electric wheelchair, this problem is automatically solved. It is possible to Further, the processing on the centralized management computer side can be simplified as compared with the case where the inter-vehicle distance is secured by the processing of the centralized management computer. Moreover, since communication with the centralized management computer is not required, even when a moving object such as a pedestrian suddenly appears in front of the self-propelled electric wheelchair, it is possible to immediately deal with the situation. Safety is secured.

It is desirable that the vehicle recovery control means is provided with a vehicle recovery function for forcibly returning the self-propelled electric wheelchair to the course when the user's riding is not confirmed for a certain period of time.

If the calling terminal is configured as a portable calling terminal, the user may move to another place on foot without waiting for the arrival of the self-propelled electric wheelchair, but after a certain period of time has passed. By forcibly returning the self-propelled electric wheelchair to the course, it is possible to surely prevent the collection failure of the self-propelled electric wheelchair.

[0025]

DETAILED DESCRIPTION OF THE INVENTION Embodiments of the present invention will be described in detail below with reference to the drawings. FIG. 1 is a conceptual diagram showing an outline of a rental system for a self-propelled electric wheelchair according to an embodiment to which the present invention is applied.

As shown in FIG. 1, the rental system 1 for self-propelled electric wheelchairs according to the present embodiment has a plurality of self-propelled electric wheelchairs Cr which are drive-controlled by radio signals.
(1) to Cr (a _max ) and self-propelled electric wheelchair Cr
(1) ~Cr centralized computer 2 to centrally manage the radio signal operating conditions of _{(a max),} and self-propelled electric wheelchair _{Cr (1) ~Cr (a max} ) of the plurality for luring the radio signal Portability calling terminal 3
And a plurality of transmitting antennas 20a arranged in the traveling area of the self-propelled electric wheelchair Cr (1) to Cr (a _max ),
20b and 20c.

Of these, the centralized management computer 2 is installed inside the reception office 4 provided in an amusement park or a theme park, and a plurality of portable call terminals 3 are installed inside the reception office 4. It is managed and rented for free or free to users who visit amusement parks and theme parks. Next, each of the system components will be described individually.

FIG. 2 shows a self-propelled electric wheelchair Cr (1) to Cr.
FIG. 3 is a perspective view showing the appearance of (a _max ).
FIG. 3 is a functional block diagram showing an outline of a configuration of a control unit 13 incorporated in self-propelled electric wheelchairs Cr (1) to Cr (a _max ).

Each of the self-propelled electric wheelchairs Cr (1) to Cr (a _max ) used in this embodiment is a four-wheel self-propelled electric wheelchair as shown in FIG. Two
The wheels function as driving wheels, and the two front wheels function as steering wheels. A swingable safety bar 5 for holding the user's body is mounted behind the seat, and an approach detection sensor 6 for detecting an obstacle within a predetermined range is attached to the tip of the vehicle. Has been. A well-known acoustic sensor or the like can be used as the approach detection sensor 6. 2 shows the posture of the rocking type safety bar 5 when the rocking type safety bar 5 is opened to allow the user to get in and out of the rocking type safety bar 5. By swinging the self-propelled electric wheelchair Cr (1) to Cr (a _max ) by swinging it toward the front and holding it in the closed position, it is possible to prohibit the careless entry / exit operation while the vehicle is running. The handle 7 is exclusively used as an armrest. Reference numeral 8 is a transmitting / receiving antenna, and reference numeral 9 is a console unit including a display panel 10, a stop key 11 and a start key 12.

Self-propelled electric wheelchairs Cr (1) to Cr (a
_As shown in FIG. 3, the control unit 13 incorporated in the ( _max ) is mainly composed of a microprocessor 14 and a ROM 15 for storing a program, and a RAM 16 for arithmetic processing and input / output circuits 17 and 18. . The microprocessor 14 is based on a drive control program stored in a ROM 15 for storing a program, and a traveling motor M1 for rotating the drive wheels and a steering motor M2 for steering,
And actuator A for opening the swing type safety bar 5
1 is controlled. The structure of the power transmission mechanism between the traveling motor M1 and the drive wheels and the structure of the steering mechanism between the steering motor M2 and the steered wheels are already known and will not be described. The obstacle detection signal from the approach detection sensor 6 is read by the microprocessor 14 via the input / output circuit 17. Further, via the transmission / reception circuit 19 and the transmission / reception antenna 8 connected to the input / output circuit 17, data exchange using a radio signal is performed between the microprocessor 14 of the control unit 13 and the central control computer 2. It is like this. And
The transmitting / receiving antenna 8 is a transmitting antenna 20a, 20b, 2
The radio wave from 0c is received, the detection circuit in the transmission / reception circuit 19 individually measures the electric field strength of the radio wave from each transmitting antenna 20a, 20b, 20c, and the measured value is sent to the microprocessor 14 via the input / output circuit 17. Enter. This microprocessor 14 is a part of the main constituent elements of the vehicle current position detecting means in the present embodiment, and this microprocessor 14 and the transmitting antennas 20a, 20b, 20.
c, the transmission / reception circuit 19 as the transmission means on the self-propelled electric wheelchair, and the transmission / reception antenna 8 together constitute the entire vehicle current position detection means. A calculation program in the ROM 15 for obtaining the current position based on the measured value of the electric field strength is also a part of the vehicle current position detection means. Characters or graphics are displayed on the display panel 10 incorporated in the console unit 9 located at the center of the handle 7 based on a command from the microprocessor 14, and the stop key 11 and the start key by the user. The operation of 12 is recognized by the microprocessor 14 via the input / output circuit 18.

FIG. 4 is a functional block diagram showing an outline of the configuration of the centralized management computer 2. The central control computer 2 includes a microprocessor 21, a ROM 22, and an RA.
It is an ordinary personal computer or a work station, etc. configured by the M23, the hard disk 24, the input / output circuit 25, the monitor 26, the keyboard 27, etc., and drives and controls the self-propelled electric wheelchairs Cr (1) to Cr (a _max ). The function as the central control computer 2 is
It is realized exclusively by the operation control program stored in the hard disk 24. That is, the microprocessor 21 that operates according to this operation control program
Is a substantially steady running control means, and is also a vehicle dispatch control means and a vehicle return control means. The transmission / reception antenna 28 and the transmission / reception circuit 29 exchange data using radio signals between the microprocessor 21 and the control unit 13 and between the microprocessor 21 and the plurality of portable call terminals 3. Is a means for transmitting and receiving.

Further, the hard disk 24 of the central control computer 2 has self-propelled electric wheelchairs Cr (1) to Cr (a).
It is also a storage means that stores a plurality of courses for cyclically running ( _max ). Instead of the hard disk 24, a computer dedicated to course storage may be installed as a server machine, and this server machine may be connected to the central management computer 2.

Here, an example of data for setting a course of the self-propelled electric wheelchair Cr (1) to Cr (a _max ) will be briefly described with reference to FIG. As shown in FIG. 6, data for driving and controlling the self-propelled electric wheelchairs Cr (1) to Cr (a _max ) includes a plurality of stored complementary types, steering angles, speeds, and target positions as one set. It is configured by combining data blocks. There are two types of complementing forms used in this embodiment, namely, linear complementing and arc complementing. By combining these complementing forms, it is possible to freely select course 1, course 2, ... As shown in FIG. It is possible to design

For example, in the course 1 shown in FIG. 1, if the traveling of the course 1 is realized with the initial position of the self-propelled electric wheelchair Cr (1) as the point P1, the data of the course 1 shown in FIG. In the data block on the first line of the file 1, linear interpolation indicating the movement from the point P1 to the point P2 is designated, and its target position is designated as the point P2. If the tip of the self-propelled electric wheelchair Cr (1) is installed on the point P1 so that the tip thereof faces the point P2, the steering angle to be designated is 0 °. Further, the designation of the speed is arbitrary, and the designated speed defines the speed of the self-propelled electric wheelchair Cr (1) traveling in the section from the point P1 to the point P2.

Similarly, in the data block on the second line of the data file 1 shown in FIG. 6, arc complement indicating the movement from the point P2 to the point P3 is designated, and its target position is designated as the point P3. To do. Since the curvature of the curve from the point P2 to the point P3 is constant, the steering angle for realizing this circular arc complement is a constant value. That is, the rudder angle corresponding to the arc complement is a constant value corresponding to the curvature of the arc, and this value is set as the designated rudder angle in the data block on the second row. Further, the designated speed for defining the speed of the self-propelled electric wheelchair Cr (1) traveling in the section from the point P2 to the point P3 is set in the data block on the second row.

Thereafter, the course may be designed by freely creating the data blocks of each row in the same manner as described above, but the target position of the data block of the last row is the starting point of the data block of the first row, that is, this In the example, it is assumed that the point P1 is matched.

The basic processing procedure required for traveling control is that the self-propelled electric wheelchair Cr (1) is caused to travel at the designated steering angle and the designated speed designated in the data block in the first row, When the type electric wheelchair Cr (1) enters the in-position of the target position P2 of the data block of the first row, the complementary format and the designated rudder angle and the designation of the data row of the next row, that is, the second row Read the speed and target position P3,
This is a repetition of the operation of starting the processing of the data block in the second row.

However, in actuality, there is no guarantee that the self-propelled electric wheelchair Cr (a) will travel accurately along the set course because of the influence of slipping of the steered wheels. Therefore, in the present embodiment, the self-propelled electric wheelchair Cr (a) is based on the deviation between the preset course and the current position of the self-propelled electric wheelchair Cr (a) detected by the vehicle current position detection means. A rudder angle correction process for correcting the rudder angle is executed. The trajectory of the course required to detect the deviation, that is, the absolute course shape, is expressed as a function faPt (a) representing a straight line or an arc in the data block of each row together with the above-mentioned complementary form, steering angle, speed, and target position. Remembered
Note that Pt (a) is a variable indicating the address value in the data file set for the self-propelled electric wheelchair of the vehicle number a, that is, a value indicating which line of the data block, and the function faPt. (A) is a function representing a straight line or an arc unique to the data block.

Further, in the present embodiment, a plurality of data files 1, data files 2, data files 3, ... Configured as described above are stored in the hard disk 24, and the self-propelled electric wheelchair Cr (1) to Cr (a
_max ), which self-propelled electric wheelchair is driven and controlled based on which data file can be freely set by a definition file in the hard disk 24 as shown in FIG. This is the vehicle-specific course setting function in this embodiment. The vehicle number shown in FIG. 7 is a value for identifying the self-propelled electric wheelchair, and the column of the data file is the number of the data file to be applied to the vehicle number. In this example, for example, the data file of Pr (1) is defined to be applied to the self-propelled electric wheelchair Cr (1). However, it is not necessary to associate the data files with the self-propelled electric wheelchairs in a one-to-one correspondence. For example, as shown in FIG. 1, a plurality of self-propelled electric wheelchairs can be simultaneously driven on the same course. It can also be set.

The means for enabling this one-to-many setting is the pointer initial value shown in FIG. The initial value of the pointer is a value to identify the reading start position of the data block when the system is started, and when there are multiple self-propelled electric wheelchairs that use the data file with the same number, that is, on the same course. When running a plurality of self-propelled electric wheelchairs at the same time, it is necessary to shift the pointer initial value and perform the setting operation. For example, in the example of the course 1 of FIG. 1 described above, the self-propelled electric wheelchair C
When the system is started with the initial position of r (1) as the point P1 and the initial position of the self-propelled electric wheelchair Cr (2) as the point P2, data files corresponding to Cr (1) and Cr (2) The values of the numbers are both Pr (1) and Cr
The pointer initial value corresponding to (1) is 1, and Cr is
The pointer initial value corresponding to (2) should be set to 2.

The pointer current value column in FIG. 7 is a value indicating the address of the data block being executed corresponding to the vehicle number, and the target position column is a value indicating the target position of the data block being executed. is there. However, when the self-propelled electric wheelchair receives a call, the coordinates of the location of the portable call terminal 3 that made the call are temporarily set in the target position field.

Next, an outline of the configuration of the portable call terminal 3 will be described with reference to FIG. The portable call terminal 3 is mainly composed of a microprocessor 30 as a control means, a ROM 31, a RAM 32, an input / output circuit 33, and a call switch 34.
A transmission / reception circuit 35 for transmitting a wireless signal to the central control computer 2 and a transmission / reception antenna 36 are provided. Also,
The transmitting / receiving antenna 36 includes transmitting antennas 20a, 20b,
The detection circuit in the transmission / reception circuit 35 individually receives the electric wave from the transmitting antennas 20a, 20b, and 20c, receives the electric wave from the 20c, and individually measures the electric field strength of the electric wave from the transmitting antennas 20a, 20b, and 20c. Enter. The microprocessor 30 is a part of main constituent elements of the location detecting means in the present embodiment, and the microprocessor 30 and the transmitting antennas 20a, 20b, 20c,
Further, a combination of the transmission / reception circuit 35 as a transmission means on the portable call terminal 3 and the transmission / reception antenna 36 constitutes the entire location detecting means. A calculation program in the ROM 31 for obtaining the current position based on the measured value of the electric field strength is also a part of the position detecting means.

8 to 11 are flowcharts showing the outline of the vehicle drive control processing executed by the microprocessor 21 of the centralized management computer 2, and FIGS.
FIG. 13 is a flow chart showing an outline of the signal reception processing executed by the microprocessor 21. These processings are repeatedly executed by the microprocessor 21 of the centralized management computer 2 as a task of a predetermined cycle. There is. Further, FIGS. 14 to 15 show the microprocessor 14 of the control unit 13 incorporated in each of the self-propelled electric wheelchairs Cr (1) to Cr (a _max ).
16 is a flowchart showing an outline of the traveling control process repeatedly executed at every predetermined cycle, and FIG. 16 is a flowchart showing an outline of the vehicle calling process repeatedly executed by the microprocessor 30 of the portable calling terminal 3.

Next, with reference to these flow charts, the processing operations of the microprocessors 21, 14, 30 which operate as the above-mentioned means and function realizing means of each function will be described in detail.

The microprocessor 21 that has started the vehicle drive control processing of FIG. 8 first determines whether or not the system activation flag F2 has already been set, that is, this processing cycle is the first one after the system activation. It is determined whether or not (step a1).

If the system activation flag F2 is not set, it means that this processing cycle is the first time after the system is activated, so that the microprocessor 21 as the steady running control means has the system activation flag F2.
After setting 1 to 2 and storing the start of the system (step a2), referring to the definition file as shown in FIG. 7, the self-propelled electric wheelchairs Cr (1) to Cr (a _max )
Execution address storage register Pt (1) to store execution addresses of data blocks in each data file
An initial value indicating the read start position of the data block is stored in each of Pt (a _max ), and the target defined in each data block is further stored in each of the target position storage registers Rd (1) to Rd (a _max ). The position is stored and the reception standby flag F1 is reset (step a3).

In the example described above, for example, 1 is set in the execution address storage register Pt (1) corresponding to the self-propelled electric wheelchair Cr (1) and the point P2 is set in the target position storage register Rd (1). Is stored in the execution position storage register Pt (2) corresponding to the self-propelled electric wheelchair Cr (2), and the position of the point P3 is stored in the target position storage register Rd (2). Will be done.

Next, the microprocessor 21 determines whether or not the reception standby flag F1 is set, that is, whether or not it is necessary to wait for a response from any of the self-propelled electric wheelchairs (step). a4), at this stage, since the reception standby flag F1 is held in the reset state, the microprocessor 21 first sets the vehicle search index a.
Is incremented by 1 (step a5), and the index a
It is judged whether or not the value of exceeds the maximum value a _max of the vehicle number (step a6).

If the value of the vehicle search index a does not exceed the maximum value a _max of the vehicle number, the microprocessor 21 holds the current value of the index a as it is, and the value of the index a indicates the vehicle number. When the maximum value a _max is exceeded, the vehicle search index a is reset to the initial value 1 (step a7).

Next, the microprocessor 21 as the steady running control means selects the control unit 13 of the self-propelled electric wheelchair Cr (a) based on the current value of the vehicle search index a and transmits the data request signal. (Step a
8) By setting the reception standby flag F1, it is stored that the data transmission / reception with the self-propelled electric wheelchair Cr (a) is started (step a9).

Next, the microprocessor 21 as the steady running control means determines whether or not the position data from the control unit 13 of the self-propelled electric wheelchair Cr (a) is received (step a10). Is not received, the vehicle drive control processing of the processing cycle is terminated as it is, and if the processing of steps a1, a4 and a10 is repeatedly executed in the vehicle drive control processing of the next cycle and thereafter, the self-propelled electric wheelchair Cr It waits for reception of position data from the control unit 13 of (a).

On the other hand, the microprocessor 14 installed in the control unit 13 of the self-propelled electric wheelchair Cr (a) is
The traveling control process as shown in FIG. 14 and FIG. 15 is repeatedly executed every predetermined cycle, and based on the measured value of the electric field intensity input from the detection circuit in the transmission / reception circuit 19 at each processing cycle ( In step c1), the microprocessor 14 as the vehicle current position detecting means sequentially updates and obtains the current position of the self-propelled electric wheelchair Cr (a) (step c2). The magnitude of the electric field strength of the radio waves transmitted from the transmitting antennas 20a, 20b, 20c is determined by the transmitting antenna 20.
It is uniquely determined by the radius from a, 20b, 20c, and since the position information regarding the installation position of each transmitting antenna 20a, 20b, 20c is known, the three positions are determined based on the relationship between these position information and the radius. The present position of the self-propelled electric wheelchair Cr (a) can be accurately determined by obtaining the overlapping point of the circles.

The data request signal transmitted from the microprocessor 21 of the central control computer 2 is sent to step c3.
The microprocessor 14 detected in the determination process of step S1 transmits the current position of the self-propelled electric wheelchair Cr (a) currently required to the central control computer 2 (step c).
4).

Then, the microprocessor 21 of the central control computer 2 executes the self-propelled electric wheelchair Cr in the judgment processing of step a10 of the vehicle drive control processing in FIG.
Transmission of position data from the control unit 13 in (a) is detected, and the current position of the self-propelled electric wheelchair Cr (a) is temporarily stored (step a11).

Next, the microprocessor 21 as the steady running control means determines whether or not this current position is in the in-position of the target position stored in the target position storage register Rd (a), that is, at the present stage. It is determined whether or not the movement command for one data block given to the self-propelled electric wheelchair Cr (a) is completed (step a
12) If the current position of the self-propelled electric wheelchair Cr (a) is not in the in-position, the microprocessor 21 as the approach prevention function realizing means further has the same data as the self-propelled electric wheelchair Cr (a). Among other self-propelled electric wheelchairs using the file, it is determined whether or not the presence of a stopped vehicle is stored based on the user's instruction (step a13). However, since the user is not allowed to board the self-propelled electric wheelchair at this stage immediately after the system is activated, the determination result of step a13 is inevitably false.

Therefore, the microprocessor 21 executes the current position stored in the vehicle current position storage register Pn (a) (x, y), more specifically, the vehicle drive control process in the previous cycle or in the previous cycle or earlier. The detected position Pn (a) (x, y) of the self-propelled electric wheelchair Cr (a) and the detected position Pn (a) (x, y) of the self-propelled electric wheelchair Cr (a) newly detected in step a11 of the vehicle drive control process this time. It is determined whether or not the current position matches the current position (step a14), and only when the two do not match, the vehicle current position storage register Pn (a) (x,
The value of y) is stored in front of the vehicle position storage register Pp (a) (x,
y) is updated and set (step a15), and at the same time, the current position of the self-propelled electric wheelchair Cr (a) newly detected in the process of step a11 of the current vehicle drive control process is set to the vehicle current position storage register Pn. (A) (x, y) is updated and set (step a16).

Next, the microprocessor 21 stores the values of x and y in the vehicle front position storage register Pp (a) (x, y) and the values of x and y in the vehicle current position storage register Pn (a) (x, y). The traveling direction Vpn (a) of the self-propelled electric wheelchair Cr (a) is calculated based on the value (step a17).

FIG. 17 is a principle diagram showing the method of calculating the traveling direction Vpn (a). In FIG. 17, Pp
The position of (a) (x, y) is the position of the self-propelled electric wheelchair Cr (a) one processing cycle before, and the position of Pn (a) (x, y) is the current self-propelled electric wheelchair Cr. This is the position (a). Therefore, the traveling direction Vpn (a) can be obtained as a vector by a simple subtraction process of the values of the x and y axes. Although FIG. 17 shows the case where the self-propelled electric wheelchair Cr (a) moves from one processing cycle before to the present cycle, the approach detection sensor 6 is provided in the self-propelled electric wheelchair Cr (a). Since the emergency stop control means used is provided with an autonomous stop function, even if a movement command is output from the microprocessor 21 as the steady running control means to the control unit 13 of the self-propelled electric wheelchair Cr (a). The self-propelled electric wheelchair Cr (a) may not move. In such a case, the determination result of step a14 becomes true and the processes of steps a15 and a16 are skipped. Therefore, the vehicle immediately preceding position storage register Pp
(A) (x, y) and vehicle current position storage register Pn
In (a) (x, y), position data regarding the last movement before the emergency stop is held as it is. Therefore, even when the self-propelled electric wheelchair Cr (a) is stopped, the start point and the end point of the movement vector are overlapped with each other and the traveling direction Vpn (a) cannot be obtained in the process of step a17. Does not occur.

Next, the microprocessor 21 determines whether or not the self-propelled electric wheelchair Cr (a) is stored as a calling vehicle or a returning vehicle (step a).
19), since the portable call terminal 3 is not operated at the present stage immediately after the system is started, the determination result of step a19 is inevitably false.

Therefore, the microprocessor 21 as the steering angle correction function implementing means refers to the value of the execution address storage register Pt (a) corresponding to the current value of the vehicle search index a and refers to the self-propelled electric wheelchair Cr (a ) Is the data file Pr
Data block Pt currently being executed in (a)
A straight line or arc function faPt (a) representing a part of the course shape stored in (a) is read from a data file as shown in FIG. 6, and the current vehicle position Pn (a) is read on this function faPt (a). The point Q (x, which is the closest to (x, y)
y) is obtained (step a20).

Then, the microprocessor 21 as the rudder angle correction function realizing means has a self-propelled electric wheelchair Cr (a).
Of the point Q (x, y) with respect to the traveling direction Vpn (a) of the vehicle and the current position Pn of the self-propelled electric wheelchair Cr (a).
(A) The separation distance between (x, y) and the target position Rd (a), and the current position Pn with respect to the point Q (x, y)
(A) The deviation of (x, y) is obtained, and the corrected steering angle is calculated based on these data (step a21).

FIG. 18 is a diagram showing the principle of operation for correcting the steering angle. As is clear from this figure, the traveling direction V
When the point Q (x, y) is located to the right of pn (a), that is, when the current vehicle position deviates to the left in the traveling direction with respect to the course, the correction direction is right. On the contrary, the point Q (x, y) with respect to the traveling direction Vpn (a)
Is located to the left, that is, when the current vehicle position is deviated to the right in the traveling direction with respect to the course, the correction direction is left. In addition, a self-propelled electric wheelchair Cr (a)
Current position Pn (a) (x, y) and target position Rd (a)
When the distance between the self-propelled electric wheelchair Cr (a) and the self-propelled electric wheelchair Cr (a) is large, the remaining traveled distance is long and the correction amount may be small. , Y)
When the separation distance between the target position Rd (a) and the target position Rd (a) is small, the remaining running distance is short, and therefore the deviation needs to be eliminated early, and the correction amount becomes large. At the same time, point Q
If the deviation of the current position Pn (a) (x, y) from (x, y) is large, the correction amount becomes large, and conversely,
Current position Pn (a) (x, y) for point Q (x, y)
If the deviation of is small, the correction amount will be small. Therefore, a table storing the correction amount corresponding to the magnitude of the deviation of the current position Pn (a) (x, y) from the point Q (x, y) and the current position Pn of the self-propelled electric wheelchair Cr (a). (A) (x,
y) and the target position Rd (a), a table storing coefficients corresponding to the size of the separation distance is stored in the hard disk 24 in advance, and based on the values of the detected deviation and the separation distance, If the correction amount and the coefficient are selected from the table and the product of both is calculated, the corrected steering angle suitable for the deviation and the separation distance can be obtained. This is the content of the substantial processing performed in step a21.

Next, the microprocessor 21 as the rudder angle correction function realizing means uses the self-propelled electric wheelchair Cr (a).
Of the specified steering angle stored in the address Pt (a) of the data file Pr (a), that is, the specified steering angle stored in the data block currently being executed, and further obtained in the processing of step a21. The designated steering angle is corrected based on the corrected steering direction and the corrected steering angle (step a2
2), this corrected steering angle and data file Pr (a)
The value of the designated speed stored in the address Pt (a) of is transmitted to the control unit 13 of the self-propelled electric wheelchair Cr (a) (step a23), and after resetting the reception standby flag F1 (step a24), The vehicle drive control processing of this cycle is ended.

Then, the microprocessor 14 installed in the control unit 13 of the self-propelled electric wheelchair Cr (a)
14 detects the transmission of the designated steering angle and the designated speed from the centralized management computer 2 in the determination processing of step c5 in the traveling control processing as shown in FIGS. 14 and 15, and the obstacle detection signal is output from the approach detection sensor 6. It is determined whether or not it has been input (step c6). If the obstacle detection signal is not input, the microprocessor 14
Is R with the specified steering angle and specified speed as the execution target data.
The AM 16 is updated and set, and the steering motor M2 and the traveling motor M1 are drive-controlled in accordance with these execution target data to drive the self-propelled electric wheelchair Cr (a) (step c7).

When the obstacle detection signal from the approach detection sensor 6 is detected, that is, when the determination result of step c6 is true, the self-propelled electric wheelchair Cr (a).
Since it means that there is an obstacle in the vicinity of the front of the microprocessor, the microprocessor 14 as the emergency stop control means ignores the command from the central control computer 2,
Of the execution target data temporarily stored in the RAM 16, the value of the specified speed is forcibly updated and set to 0 (step c
8). Therefore, in this case, the self-propelled electric wheelchair Cr (a)
Is forcedly stopped, or the stopped state is maintained as it is. However, the traveling is stopped by this process only for the self-propelled electric wheelchair Cr (a) in which the approach detection sensor 6 detects an obstacle, and the same data as this self-propelled electric wheelchair Cr (a) is used. Even if there is another self-propelled electric wheelchair using the file, that is, another self-propelled electric wheelchair traveling on the same course as the self-propelled electric wheelchair Cr (a), the self-propelled electric wheelchair The electric wheelchair does not stop running at the same time.

As a result of the reception standby flag F1 being reset in the process of step a24 in the vehicle drive control process described above, the determination result of step a14 is false in the vehicle drive control process of the next cycle. Therefore, the microprocessor 21 as the steady running control means increments the value of the vehicle search index a by 1, calls another self-propelled electric wheelchair Cr (a) having a vehicle number corresponding to the index a, and the same as above. Perform the processing operation of. Since the value of the vehicle search index a in the vehicle drive control process cyclically changes in increments of 1 in the range of 1 to a _max , all the self-propelled electric wheelchairs Cr (a) with a = 1 to a _max have 1 values. Two central control computers
The drive control is performed at substantially the same time.

In this way, the central control computer 2
While each self-propelled electric wheelchair Cr (a) travels based on the designated steering angle and the designated speed transmitted from the self-propelled electric wheelchair Cr (a), the target position stored in the data block being executed is stored. When you reach the in-position of Rd (a),
In the vehicle drive control process that is repeatedly executed, the determination result of step a12 becomes true.

When it is thus confirmed that the self-propelled electric wheelchair Cr (a) has reached the in-position of the target position Rd (a) of the data block being executed, the microprocessor 21 as the steady running control means Whether or not this self-propelled electric wheelchair Cr (a) is stored as a calling vehicle (step a26) or whether it is stored as a returning vehicle is determined (step a2).
7) Since the portable call terminal 3 is not operated at the current stage immediately after the system is started, both the determination results of step a26 and step a27 are inevitably false.

Therefore, the microprocessor 21 serving as the steady running control means has the execution address storage register Pt.
It is determined whether the current value of (a) has reached the address value of the final data block of the data file Pr (a) of the self-propelled electric wheelchair Cr (a) (step a29). Here, if the current value of the execution address storage register Pt (a) has not reached the address value of the final data block,
The microprocessor 21 increments the value of the execution address storage register Pt (a) by 1 (step a31), and when the current value of the execution address storage register Pt (a) reaches the address value of the final data block. The microprocessor 21 resets the initial value 1 to the execution address storage register Pt (a) again (step a30), and updates the address of the data block to be executed. In the example of course 1 in FIG. 1 which is composed of 13 data blocks, when the current value of Pt (a) is 1 to 12, the value of Pt (a) is incremented by 1, and Pt (a) P) only if the current value of) is 13
The value of t (a) will be initialized to 1.

Next, the microprocessor 21 as the steady running control means stores the data file Pr (a) in the target position storage register Rd (a) based on the updated current value of the execution address storage register Pt (a). Address P
The target position of t (a) is updated and set (step a3
2) Return to the determination process of step a13.

The processing after step a13 is the same as that described above, except that the execution address storage register Pt (a) is used.
Since the value of and the value of the target position storage register Rd (a) have been updated to the contents of the next data block, the contents of the next data block are also output for the complementary format and the designated steering angle and the designated speed. , A self-propelled electric wheelchair Cr (a) that has detected these commands in the traveling control process shown in FIG.
Will start traveling along the partial shape of the course defined by the next data block.

The updating process of such a data block is as follows.
Since it is repeatedly executed based on the value of the vehicle search index a that is sequentially updated in the vehicle drive control process, a = 1 to a
The update processing of the data blocks for all the self-propelled electric wheelchairs Cr (a) of _max can be surely executed without omission.

As a result, all the self-propelled electric wheelchairs Cr (a) with a = 1 to a _max are set for each of them, that is, the course 1 defined by the data file Pr (a). , It will run cyclically along the course 2, ... without rest. The above is the outline of the steady running realized by the microprocessor 21 of the centralized management computer 2.

Next, the call processing of the self-propelled electric wheelchair using the portable call terminal 3 will be described.

When the user renting the portable call terminal 3 operates the call switch 34 of the portable call terminal 3, the microprocessor 30 causes the switch 3 to switch 3 in the determination process of step d1 of the vehicle call process shown in FIG.
Operation 4 is detected.

The microprocessor 30 as the location detecting means obtains the location of the portable calling terminal 3 based on the measured value of the electric field strength input from the detection circuit in the transmission / reception circuit 35 (step d2) ( Step d
3) The location data (X, Y) is transmitted as a call signal to the centralized management computer 2 (step d).
4). The method of obtaining the location is the same as that of the vehicle current position detecting means described above.

On the other hand, the microprocessor 21, which repeatedly executes the signal receiving process of FIGS. 12 to 13 substantially in parallel with the above-described vehicle drive control process, calls the portable call terminal 3 in the determination process of step b1. The signal transmission is detected, and the transmitted location data (X, Y) is temporarily stored (step b2).

Next, the microprocessor 21 as the optimum vehicle selecting function realizing means sets the value of the vehicle search index b to 1
(Step b3), and based on the value of the vehicle search index b, the value of the vehicle current position storage register Pn (b) (x, y) that stores the current position of the self-propelled electric wheelchair Cr (b) is set. A value (X−) corresponding to the distance between the location (X, Y) of the portable call terminal 3 that has read (step b4) and transmitted the call signal and the current position of the self-propelled electric wheelchair Cr (b). x) ² + (Y−y) ² is obtained, and this value is temporarily stored in the minimum separation distance storage register D as a temporary minimum value (step b5). The actual separation distance is the square root of D, but here, since it suffices to determine only the size relationship of the separation distance between the portable calling terminal 3 that has transmitted the call signal and each self-propelled electric wheelchair, the square root is purposely set. The process of obtaining

Next, the microprocessor 21 as the means for implementing the optimum vehicle selection function temporarily stores the current value of the vehicle search index b in the optimum vehicle number storage register ST as a temporary optimum vehicle number (step b6). and increments the value of the search index b (step b7), the total number current value of self-propelled motorized wheelchair said vehicle search index b a _m
It is determined whether or not it exceeds _ax (step b8).

If the current value of the vehicle search index b does not exceed the total number a _max of the self-propelled electric wheelchairs, the microprocessor 21 determines another self-propelled value based on the updated current value of the index b. The value of the current position Pn (b) (x, y) of the electric wheelchair Cr (b) is read (step b
9) Similarly to the above, a value corresponding to the separation distance between the location (X, Y) of the portable call terminal 3 that has transmitted the call signal and the current position of the self-propelled electric wheelchair Cr (b). (X−x) ² + (Y−y) ² is obtained, and the magnitude relationship between this value and the value stored in the minimum distance storage register D is compared (step b10).

If the value of (X−x) ² + (Y−y) ² is smaller than the value of the minimum separation distance storage register D,
The self-propelled electric wheelchair with the vehicle number newly read this time is closer to the portable call terminal 3 that has transmitted the call signal than the self-propelled electric wheelchair with the vehicle number read in the previous process. This means that the microprocessor 21 calculates (X−x) ² + (Y−y) this time.
The value of ² is updated and stored in the minimum separation distance storage register D as a new minimum value (step b11), and at the same time, the current value of the vehicle search index b is updated and stored in the optimum vehicle number storage register ST as the optimum vehicle number ( Step b6).

On the other hand, when the determination result of step b10 is false, that is, (X−x) ² + (Y−) calculated this time.
y) When the value of ² is equal to or more than the value of the minimum distance storage register D, the self-propelled electric wheelchair Cr (b) of the vehicle number b newly read this time and the portable call terminal 3 The distance between them is larger than the minimum distance previously detected, that is, the self-propelled electric wheelchair Cr (b) indicated by the updated value of the vehicle search index b is displayed on the portable call terminal 3. Since it means that it is not the closest one, the microprocessor 21 skips the processing of step b11 and step b6, and stores the minimum separation distance storage register D and the optimum vehicle number storage register ST.
In addition, the minimum separation distance detected before that and the value of the vehicle number corresponding to the minimum separation distance are held as they are.

Until the microprocessor 21 as the means for implementing the optimum vehicle selection function confirms that the current value of the vehicle search index b has exceeded the total number a _max of the self-propelled electric wheelchairs in the judgment processing of step b8. , The same process as described above is repeatedly performed to obtain the vehicle number ST of the self-propelled electric wheelchair closest to the portable call terminal 3 that has transmitted the call signal, and calls the self-propelled electric wheelchair Cr (ST) for portable call. The vehicle is temporarily stored as a calling vehicle to be sent to the location of the terminal 3 (step b12), and the target position storage register Rd (ST) corresponding to this vehicle number is
The value of (X, Y) read in step b2, that is,
The location of the portable call terminal 3 that has transmitted the call signal is updated and set (step b13). That is, the transfer of control from the steady travel control means to the vehicle dispatch control means is substantially achieved by the processing in step b13.

When the calling vehicle is stored in this manner, the self-propelled electric wheelchair C stored as the calling vehicle is stored.
The determination result of step a19 in the vehicle drive control processing of FIGS. 8 to 11 is true for r (a). Therefore,
Target position Rd which is the end point of the data block being executed
Instead of (a), the steering angle control in which the target position is the location Rd (a) = (X, Y) of the portable call terminal 3 that has transmitted the call signal is executed in the process of step a25.

In this case, since the target position does not exist on the preset course, it is meaningless to compare the current position of the self-propelled electric wheelchair with the function faPt (a) representing a part of the course shape. . Therefore, in the processing of step a25,
Simply, the traveling direction Vpn of the self-propelled electric wheelchair Cr (a)
The steering angle control is performed based on the relationship between (a) and the current position Pn (a) (x, y) and the position Rd (a) = (X, Y) of the portable call terminal 3.

FIG. 19 is a principle diagram of operation showing the steering angle control when the course of movement is not obvious. As is clear from this figure, the location Rd (a) of the portable calling terminal 3 that has transmitted the call signal in the traveling direction Vpn (a) passing through the current position Pn (a) (x, y) = ( X,
When Y) is located in the right direction, the steering angle direction is right, and conversely, a call signal is transmitted to the traveling direction Vpn (a) passing through the current position Pn (a) (x, y). When the location Rd (a) = (X, Y) of the portable call terminal 3 is located to the left, the steering angle is to the left. Also,
Current position Pn (a) of self-propelled electric wheelchair Cr (a)
When the separation distance between (x, y) and the location Rd (a) = (X, Y) of the portable call terminal 3 that has transmitted the call signal is large, the remaining travel distance is long, so the steering angle is long. Is small, on the contrary, self-propelled electric wheelchair Cr
The current position Pn (a) (x, y) in (a) and the location Rd (a) of the portable calling terminal 3 that transmitted the call signal
= (X, Y) is small, the remaining traveling distance is short and the steering angle is large. At the same time, the location Rd (a) of the portable call terminal 3 with respect to the straight line Vpn (a) passing through the current position Pn (a) (x, y) =
If the vertical separation distance of (X, Y) is large, the steering angle becomes large, and conversely, the location of the portable call terminal 3 with respect to the straight line Vpn (a) passing through the current position Pn (a) (x, y). The smaller the vertical separation distance at the position Rd (a) = (X, Y), the smaller the steering angle. Therefore, the current position Pn
(A) A table in which the steering angle is stored in correspondence with the magnitude of the vertical separation distance of the location Rd (a) = (X, Y) of the portable calling terminal 3 with respect to the straight line Vpn (a) passing through (a) (x, y) And the current position Pn (a) of the self-propelled electric wheelchair Cr (a)
(X, y) and the location Rd of the portable call terminal 3
(A) = (X, Y) and a table storing coefficients corresponding to the size of the separation distance from (A) = (X, Y) are stored in advance in the hard disk 24, and a straight line Vpn obtained by calculation is stored.
The vertical separation distance of the location position Rd (a) = (X, Y) with respect to (a), the current position of the self-propelled electric wheelchair Cr (a) obtained by calculation, and the location position Rd (of the portable call terminal 3). a) = (X, Y) based on the distance between the two, the steering angle and the coefficient are selected from these tables, and the product of the two is calculated, thereby enabling the self-propelled electric wheelchair Cr (a). A rudder angle suitable for moving the portable call terminal 3 to the location Rd (a) = (X, Y) can be obtained. In this case, unlike during steady running, the self-propelled electric wheelchair Cr (a)
It is highly likely that the moving direction of the self-propelled electric wheelchair Cr (a) will be changed to the target position Rd.
In order to surely reach the in-position of (a) = (X, Y), the rudder angle and the coefficient value of each table are set in a range in which an extreme meandering motion does not occur in the self-propelled electric wheelchair Cr (a). It is desirable to set a large value. This is step a25
It is the content of the substantial processing performed in.

The steering angle thus obtained is determined by the microprocessor 21 as the vehicle dispatch control means in the self-propelled electric wheelchair Cr (a) corresponding to the vehicle search index a as in the case of steady running. It is transmitted to the control unit 13 and the designated speed is continuously maintained as it is (step a23). On the other hand, the control unit 13 side of the self-propelled electric wheelchair Cr (a) receives these signals in the same manner as in the case of steady traveling, and the steering motor M2 and the traveling motor of the self-propelled electric wheelchair Cr (a) are received. Drive and control M1.

In this way, the self-propelled electric wheelchair Cr (a) is based on the steering angle transmitted from the central control computer 2.
While the vehicle is traveling, the self-propelled electric wheelchair Cr (a) is located at the location Rd (a) = (X, Y) of the portable call terminal 3.
The in-position of
In the vehicle drive control process repeatedly executed by 1, the determination result of step a12 becomes true.

Therefore, the microprocessor 21 determines whether or not this self-propelled electric wheelchair Cr (a) is stored as a calling vehicle (step a).
26) In this case, since the self-propelled electric wheelchair Cr (a) is stored as the calling vehicle, the determination result of step a26 is true. Therefore, the microprocessor 21
Sends a standby signal to the control unit 13 of the self-propelled electric wheelchair Cr (a) (step a33), and sets the speed to 0 for the control unit 13 of the self-propelled electric wheelchair Cr (a). After sending the command to perform (step a34),
The reception standby flag F1 is reset and the vehicle drive control process of the cycle is finished (step a35).

On the other hand, on the side of the control unit 13 of the self-propelled electric wheelchair Cr (a), a command to set the speed to 0 is confirmed in the determination processing of step c5 in the traveling control processing as shown in FIGS. 14 and 15. Then, the traveling motor M1 is stopped in the process of step c7, and the self-propelled electric wheelchair Cr (a)
Stop driving.

After that, the vehicle drive control process by the microprocessor 21 is repeatedly executed, but since the self-propelled electric wheelchair Cr (a) is already in the in-position, the determination result of step a12 is constantly true. , No speed command other than 0 is transmitted to the self-propelled electric wheelchair Cr (a). As a result, the stopped state of the self-propelled electric wheelchair Cr (a) that has reached the location of the portable call terminal 3 that has transmitted the call signal is held.

Further, the microprocessor 14 of the control unit 13 which repeatedly executes the traveling control processing as shown in FIGS. 14 and 15 every predetermined cycle waits from the central control computer 2 by the judgment processing of step c12. The signal transmission is detected, and the value 1 indicating waiting for boarding is set in the driving state storage flag F3 (step c13).

Next, the microprocessor 14 drives and controls the actuator A1 to open the swinging safety bar 5 (step c18), and the leaving time measuring timer T
Is restarted (step c19), and it is determined whether the start key 12 of the console unit 9 is operated by the user (step c20).

If the start key 12 is not operated, it is further judged whether or not the measurement time of the leaving time measurement timer T has reached a preset value (step c21). Does not reach the preset set value, the traveling control processing of the processing cycle is finished as it is.

As a result of the operation state storage flag F3 being set to 1 in this way, the determination result of step c11 becomes true in the traveling control process after the next cycle, and step c20
And the determination process of step c21 is repeatedly executed at predetermined intervals.

Normally, while the above processing is repeated, the user who operates the portable call terminal 3 gets on the self-propelled electric wheelchair Cr (a) and the console unit 9
Since the start key 12 is operated, the determination result of step c20 becomes true. Further, the user who operated the portable call terminal 3 to call the self-propelled electric wheelchair Cr (a) left the place without waiting for the arrival of the self-propelled electric wheelchair Cr (a) for various reasons. In the case, or when leaving the place ignoring the arrival of the self-propelled electric wheelchair Cr (a), the leaving time measuring timer T forming a part of the vehicle collecting function realizing means is timed up. Step c
The determination result of 21 becomes true.

Upon confirming that the determination result of step c20 or step c21 is true, the microprocessor 14 again drives and controls the actuator A1 to close the rocking type safety bar 5 (step c22), and stores the operating state. Whether or not the value of the flag F3 is 1, that is, whether or not the opening / closing process of the rocking safety bar 5 performed this time is a process for getting the user in, or a process for getting the user off It is determined whether the processing was performed (step c23). In this case, since the value of the driving state storage flag F3 is 1, it means that the opening / closing process for getting the user on board is performed. Therefore, the microprocessor 1
4 transmits the vehicle number a of the self-propelled electric wheelchair Cr (a) and the signal for getting on and off to the centralized control computer 2 (step c24), and resets the value of the driving state storage flag F3 (step c26). , The traveling control process of the processing cycle is ended.

The vehicle number a and the intercepting vehicle signal transmitted in this manner are detected by the microprocessor 21 in the determination processing of step b14 in the signal reception processing of FIGS. 12 to 13. Upon receiving this signal, the microprocessor 21 temporarily stores the received vehicle number in the register e (step b15), and erases the self-propelled electric wheelchair Cr (e) corresponding to this vehicle number from the temporary storage of the calling vehicle. (Step b16), again, self-propelled electric wheelchair C
The r (e) is temporarily stored as the return vehicle (step b17).

Next, the microprocessor 21 as the vehicle return control means (when the determination result of step c20 becomes true) or the microprocessor 21 as the vehicle recovery function realizing means (the determination result of step c21 becomes true). In case of), the target position stored in the data block at the address Pt (e) of the data file Pr (e) is reset in the target position storage register Rd (e) (step b18), and the running of the processing cycle is performed. The control process ends.

As is clear from the relationship between step a26, step a30, and step a31, the execution address storage register P is available during the processing for dealing with the call.
Since the value of t (a) is not updated, this step b18
The target position reset in the target position storage register Rd (e) by the processing of is the self-propelled electric wheelchair Cr (e).
Is the same as the target position stored immediately before leaving the course, that is, the same as the end point coordinates (target position) of the data block of the course that has left the course. Therefore, the transfer of control from the vehicle dispatch control means to the vehicle return control means or from the vehicle dispatch control means to the vehicle recovery function realizing means is substantially achieved by the processing in step b18.

As a result of rewriting the value of the target position storage register in this way, the determination result of step a12 becomes false again in the traveling control processing of the next period and thereafter, which is the same as the case of the drive control at the time of calling as described above. Step a1
3 to step a17 and step a19 and step a
25 and steps a23 to a24 are repeatedly executed. However, in this case, since the target position stored immediately before the self-propelled electric wheelchair Cr (e) leaves the course, that is, the end point coordinates of the data block of the course that has left the course, is set as the target position. The self-propelled electric wheelchair Cr (e) will move toward the end point coordinates of the data block of the course which has left on the way. Also in this case, the self-propelled electric wheelchair Cr (e)
Since the course to be moved is not obvious, the steering angle is adjusted by applying the process of step a25, as in the case of the drive control at the time of calling as described above.

In this way, the self-propelled electric wheelchair Cr (e) is based on the steering angle transmitted from the central control computer 2.
When the self-propelled electric wheelchair Cr (e) reaches the in-position of the target position Rd (e) while the vehicle is traveling, in the vehicle drive control process repeatedly executed by the microprocessor 21, the determination result of step a12 is again obtained. Is true.

Next, the microprocessor 21 determines whether or not the self-propelled electric wheelchair Cr (e) is stored as a calling vehicle (step a26). In this case, the self-propelled electric wheelchair Cr (e) is used. ) Is stored as a return vehicle, the determination result of step a26 is false,
Further, the determination result of step a27 becomes true, and the microprocessor 21 determines that the self-propelled electric wheelchair Cr (e)
Is deleted from the temporary memory of the restored vehicle (step a28),
Similar to the case of the steady running described above, the value of the execution address storage register is incremented (steps a29 to a31), the address of the data block to be executed is updated, and the value of the target position storage register Rd (e) is updated. Is updated and set (step a32). That is, the transfer of control from the vehicle return control means to the steady travel control means is substantially achieved by the processing in steps a29 to a32.

The processing after the self-propelled electric wheelchair Cr (e) returns to the course is exactly the same as the control for the steady running described at the beginning.

Here, the call and return operation of the self-propelled electric wheelchair will be briefly summarized as an example. For example, in the example shown in FIG. 1, the user at the position (X ₁ , Y ₁ ) is allowed. If the call switch 34 of the portability call terminal 3 is operated, the data file Pr is displayed on the course 1.
The distance between the self-propelled electric wheelchair Cr (1) traveling according to the definition of the data block of the address 1 in (1) and the portable call terminal 3 is minimized. Therefore, the self-propelled electric wheelchair Cr (1) is temporarily stored as a calling vehicle, and at the same time, the target position of the target position storage register Rd (1), which previously stored the position of the point P2 as the target position, is the point (X ₁ , Y ₁ ). At this time, the execution address storage register Pt indicating the data block being executed
The value of (1) = 1 is not updated. As a result, the self-propelled electric wheelchair Cr (1) moves to the target position (X ₁ , Y ₁ ),
Enter the in-position of the target position (X ₁ , Y ₁ ). The in-position is a set value, and has a radius of several meters centered on the designated coordinate. And
The rocking type safety bar 5 of the self-propelled electric wheelchair Cr (1) is opened, the standing time measuring timer T is activated, and the user who calls the self-propelled electric wheelchair Cr (1) gets on the start key. 12 is operated or the timer T for leaving time measurement is timed up, the rocking type safety bar 5 for prohibiting the user getting on and off while the vehicle is traveling is closed, and the target position storage register Rd (1) is stored. , This self-propelled electric wheelchair Cr
The target position P2 of the data block of Pt (1) = 1, which has left in the middle of (1), is reset. Self-propelled electric wheelchair C
r (1) moves toward the target position P2,
When the in-position of 2 is reached, the value of the execution address storage register Pt (1) is updated to 2, control of the data block at address 2 of the data file is started, and the self-propelled electric wheelchair Cr (1) is targeted. It returns to the steady running toward the position P3.

Next, the processing and the approach prevention function when the user getting on the self-propelled electric wheelchair Cr (a) gets off will be described.

The user riding in the self-propelled electric wheelchair Cr (a) first stops the console unit 9 when the self-propelled electric wheelchair Cr (a) reaches the target position or the vicinity of the target position. Operate the key 11. This operation is repeatedly executed by the microprocessor 14 provided in the control unit 13 of the self-propelled electric wheelchair Cr (a) as shown in FIG.
It is detected by the determination process of step c14 of the traveling control process of FIG.

The microprocessor 14, which has detected the operation of the stop key 11, sets the value 2 indicating the exit waiting to the driving state memory flag F3 (step c15), and sends the vehicle number and the stop signal to the central control computer 2. (Step c16).

Then, the microprocessor 21 of the centralized control computer 2 which repeatedly executes the signal reception processing of FIGS. 12 to 13 steps the vehicle number and the stop signal transmitted from the self-propelled electric wheelchair Cr (a). The vehicle number detected and received in the determination processing of b19 is temporarily stored in the register g (step b20), and the self-propelled electric wheelchair Cr (g) corresponding to this vehicle number is temporarily stored as a stopped vehicle (step). b21).

As a result, in the vehicle drive control process of FIGS. 8 to 11 which is repeatedly executed by the microprocessor 21, the same data as that of the self-propelled electric wheelchair Cr (g) is included, including this self-propelled electric wheelchair Cr (g). For all self-propelled electric wheelchairs that are traveling using files, that is, for all self-propelled electric wheelchairs that are traveling on the same course as the self-propelled electric wheelchair Cr (g), go to step a13. The judgment result is true. As described above, in this embodiment, the process is performed by referring to the definition file as shown in FIG. 7, and therefore, in the determination process of step a13, the vehicle search index a which is the control target at that time is selected. The value of the corresponding data file Pr (a) may be obtained and it may be determined whether or not the self-propelled electric wheelchair using the same data file is temporarily stored as a stopped vehicle.

When the determination result of step a13 is true, the microprocessor 21 determines to the self-propelled electric wheelchair Cr (a) which is the control target at that time based on the current value of the vehicle search index a. On the other hand, a stop display command (step a
18) and a movement command to set the speed to 0 (step a34).

On the other hand, the microprocessor 14 provided in the control unit 13 of the self-propelled electric wheelchair Cr (a) is
The stop display command is detected in the determination processing of step c9 of the repeatedly executed traveling control processing, the fact that the vehicle is stopped is displayed on the display panel 10 of the console unit 9 (step c10), and the speed is determined in the determination processing of step c5. Is detected and the traveling motor M1 is stopped in the process of step c7 to stop the self-propelled electric wheelchair Cr (a).

As described above, since the vehicle drive control processing of FIGS. 8 to 11 is repeatedly executed while sequentially updating the value of the vehicle search index a, the self-propelled electric wheelchair temporarily stored as being stopped. All self-propelled electric wheelchairs running using the same data file as Cr (g), that is, all self-propelled electric wheelchairs running on the same course as self-propelled electric wheelchair Cr (g) Wheelchairs will be forcibly stopped one after another. Therefore, even when the self-propelled electric wheelchair traveling on the course is stopped by the user's request, the space between the self-propelled electric wheelchair traveling on the same course is inadvertently changed. Is prevented in advance. This is the approach prevention function in this embodiment.

Further, the microprocessor 14 of the self-propelled electric wheelchair Cr (a) which detects the operation of the stop key 11 is
After the transmission processing in step c16, the actuator A1 is drive-controlled to open the swing-type safety bar 5 (step c18), restart the leaving time measuring timer T (step c19), and start key of the console unit 9. It is determined whether 12 is operated by the user (step c20). Then, if the start key 12 is not operated, it is further determined whether or not the measurement time of the leaving time measurement timer T has reached a preset value (step c21), and this measurement time is preset. If the set value that has been set has not been reached, the traveling control process of the processing cycle is ended as it is.

At this stage, the value 2 has already been set in the operating state storage flag F3, so that the determination result of step c17 becomes true in the traveling control process of the next period and thereafter, and the determination processes of steps c20 and c21 are predetermined. It will be repeatedly executed every cycle.

Normally, the self-propelled electric wheelchair C in which the rocking type safety bar 5 is opened while the above processing is repeated.
The user voluntarily dismounts from r (a), after which the leaving time measuring timer T times up and the determination result of step c21 becomes true. However, the user accidentally gets off the key 11
If the user has operated, that is, if the user wants to continue riding without getting off the vehicle, the user can restart the start key of the console unit 9 without waiting for the leaving time measuring timer T to time up. It is also possible to operate 12 to restart the traveling of the self-propelled electric wheelchair Cr (a). In this case, the determination result of step c20 is true.

The microprocessor 14, which has confirmed that the judgment result of step c21 or step c20 is true, drives the actuator A1 again to close the rocking type safety bar 5 (step c22), and stores the operating state. Whether or not the value of the flag F3 is 2, that is, whether the opening / closing process of the swinging safety bar 5 performed this time was a process for getting the user off, or a process for getting the user on board It is determined whether the processing was performed (step c23). In this case, the value of the driving state storage flag F3 is 2, which means that the opening / closing process for getting the user off has been performed. Therefore, the microprocessor 14
Cancels the stop display on the display panel 10, transmits the vehicle number a and the departure signal of the self-propelled electric wheelchair Cr (a) to the central control computer 2 (step c25), and sets the value of the driving state storage flag F3. Reset (step c2
6) Then, the traveling control process of the processing cycle is ended.

The vehicle number a and the departure signal transmitted in this way are detected by the microprocessor 21 in the determination processing of step b22 in the signal reception processing of FIGS. Upon receiving this signal, the microprocessor 21 temporarily stores the received vehicle number in the register j (step b23), and the self-propelled electric wheelchair Cr (j) corresponding to this vehicle number is temporarily stored in the stopped vehicle. It is erased (step b24).

As a result of erasing the temporary memory of the stopped vehicle, for the self-propelled electric wheelchair running using the same data file as this, step a13 in the vehicle drive control processing of FIGS. 8 to 11 is executed. The judgment result of becomes false again, and all the self-propelled electric wheelchairs that use the same data file as the stopped self-propelled electric wheelchair are allowed to travel again, and the normal running similar to the above is started. It will be.

When a call is made to a specific self-propelled electric wheelchair to leave the course, or when this self-propelled electric wheelchair returns to the course again, it is determined that the course has not been left. The inter-vehicle distance may change with other self-propelled electric wheelchairs, but since each self-propelled electric wheelchair has an independent emergency stop control means, there is a concern that the inter-vehicle distance may become too close. There is no.

When the called self-propelled electric wheelchair leaves the course and takes a long time to pick up the user, the traveling order of the self-propelled electric wheelchair traveling on the course is called. However, since each self-propelled electric wheelchair is controlled sequentially according to the data blocks stored in the respective data files, there may be variations in the driving sequence. However, it is possible to travel along each course without any hindrance.

[0122]

The rental system for a self-propelled electric wheelchair according to the present invention enables a self-propelled electric wheelchair to be steadily and cyclically run along a preset course. Local concentration is prevented, and one of them is dispatched to the user at the request of the user. It is possible to call and use a traveling electric wheelchair. In addition, since the self-propelled electric wheelchair runs only along the preset course under the drive control of the centralized management computer, no special driving operation is required by the user, and no one including the young or However, it is safe and easy to use. Since the course on which the self-propelled electric wheelchair runs can be set arbitrarily, especially when applying the rental system to an amusement park, a theme park, etc., contact the multiple event venues to set the course. It is possible to set.

Further, a vehicle current position detecting means for detecting the current positions of a plurality of self-propelled electric wheelchairs is additionally provided, and the steady running control means detects the preset course and the vehicle current position detecting means. A rudder angle correction function that corrects the steering angle of the self-propelled electric wheelchair based on the deviation from the current position of the self-propelled electric wheelchair is provided, so that the self-propelled electric wheelchair can travel extremely accurately along the course. Is possible,
In addition, no matter how many times the self-propelled electric wheelchair is circulated along the same course, there is no fear of accumulating positional deviation errors.

This vehicle current position detecting means is the electric field strength of the radio wave output from the plurality of transmitting antennas arranged in the traveling area of the self-propelled electric wheelchair, that is, the distance from the transmitting antenna whose installation position is clear. Since it is configured to obtain the current position based on, it is possible to accurately measure the current position of the self-propelled electric wheelchair.

Further, a location detecting means for detecting the location of the calling terminal is provided, and the vehicle dispatch control means is equipped with a self-propelled electric wheelchair closest to the location of the calling terminal detected by the location detecting means. Since we have installed an optimal vehicle selection function that selects and dispatches to the location of the calling terminal, the self-propelled electric wheelchair located closest to the user will be dispatched to the user, Further shortening is achieved.

Further, since the calling terminal is configured as a portable calling terminal so that the calling terminal can be rented out to the user and carried, it is easy to search for the lending station and the like no matter where the user is. You can call a self-propelled electric wheelchair.

Further, the steady running control means is for storing a plurality of courses for circularly running the self-propelled electric wheelchair and for selectively setting the course for each self-propelled electric wheelchair. Since the vehicle-by-vehicle course setting function is provided, a plurality of courses can be set in an amusement park, a theme park, or the like to diversify the travel route of the self-propelled electric wheelchair.

Moreover, the steady running control means detects all the self-propelled electric wheelchairs which detect the stop signal from the self-propelled electric wheelchair and output the stop signal and run on the same course as the self-propelled electric wheelchair. Since the approach prevention function for stopping is provided, it is possible to solve the problem such as a change in the distance between the self-propelled electric wheelchairs traveling on the same course due to a temporary stop for the user getting on and off.

Further, each of the self-propelled electric wheelchairs has an approach detection sensor for detecting an obstacle in front of it, and ignores a command from the central control computer when the approach detection sensor detects an obstacle. Since the emergency stop control means for maintaining the stopped state of the traveling electric wheelchair is provided, the inter-vehicle distance of the traveling electric wheelchair traveling on the same course is abnormal due to the slip of the driving wheels of the traveling electric wheelchair. Even if it occurs, problems such as abnormal approach can be automatically resolved.

Further, the vehicle recovery control means is provided with a vehicle recovery function for forcibly returning the self-propelled electric wheelchair to the course when the user is not confirmed to get on the vehicle for a certain period of time. Even if the user who has operated the calling terminal of abandoned the use of the self-propelled electric wheelchair, the called self-propelled electric wheelchair can be automatically returned to the course. It is possible to reliably prevent the recovery failure of the electric wheelchair.

[Brief description of drawings]

FIG. 1 is a conceptual diagram showing an outline of a rental system for a self-propelled electric wheelchair according to an embodiment to which the present invention is applied.

FIG. 2 is a perspective view showing an appearance of a self-propelled electric wheelchair used in the same embodiment.

FIG. 3 is a functional block diagram schematically showing a configuration of a self-propelled electric wheelchair used in the same embodiment.

FIG. 4 is a functional block diagram showing an outline of a configuration of a centralized management computer used in the same embodiment.

FIG. 5 is a functional block diagram showing an outline of a configuration of a portable call terminal used in the same embodiment.

FIG. 6 is a conceptual diagram briefly showing an example of data for setting a course of a self-propelled electric wheelchair.

FIG. 7 is a conceptual diagram showing a definition file used for drive control of a self-propelled electric wheelchair.

FIG. 8 is a flowchart showing an outline of vehicle drive control processing executed by a microprocessor of a central control computer.

FIG. 9 is a continuation of the flowchart showing the outline of the vehicle drive control processing executed by the microprocessor of the central control computer.

FIG. 10 is a continuation of the flowchart showing the outline of the vehicle drive control processing executed by the microprocessor of the central control computer.

FIG. 11 is a continuation of the flowchart showing the outline of the vehicle drive control processing executed by the microprocessor of the central control computer.

FIG. 12 is a flowchart showing an outline of signal reception processing executed by a microprocessor of a central control computer.

FIG. 13 is a continuation of the flowchart showing the outline of the signal reception processing executed by the microprocessor of the central control computer.

FIG. 14 is a flowchart showing an outline of a traveling control process executed by a microprocessor of a control unit incorporated in a self-propelled electric wheelchair.

FIG. 15 is a continuation of the flowchart showing the outline of the traveling control process executed by the microprocessor of the control unit incorporated in the self-propelled electric wheelchair.

FIG. 16 is a flowchart showing an outline of a vehicle calling process executed by a microprocessor of a portable calling terminal.

FIG. 17 is an operation principle diagram showing a method of calculating a traveling direction.

FIG. 18 is a diagram showing the principle of operation of the steering angle correction during steady running.

FIG. 19 is an operation principle diagram showing the steering angle control at the time of calling and at the time of returning.

[Explanation of symbols]

1 Self-propelled electric wheelchair rental system 2 Centralized management computer 3 Portable call terminal 4 Reception office 5 Swing-type safety bar 6 Approach detection sensor 7 Handle 8 Antenna for transmitting and receiving (part of vehicle current position detection means) 9 Console Unit 10 Display panel 11 Stop key 12 Start key 13 Control unit 14 Microprocessor (part of vehicle current position detection means, emergency stop control means) 15 ROM 16 RAM 17, 18 Input / output circuit 19 Transmitter / receiver circuit (vehicle current position detection means) 20a, 20b, 20c Transmitting antenna (part of vehicle current position detecting means, part of location detecting means) 21 Microprocessor (steady running control means, vehicle dispatch control means, vehicle return control means) 22 ROM 23 RAM 24 hard disk (storage means) 25 input / output times Path 26 Monitor 27 Keyboard 28 Transmitting / receiving antenna 29 Transmitting / receiving circuit 30 Microprocessor (part of location detecting means) 31 ROM 32 RAM 33 Input / output circuit 34 Calling switch 35 Transmitting / receiving circuit (part of location detecting means) 36 Transmitting / receiving antenna (Part of the location detecting means) Cr (1) to Cr (a _max ) Self-propelled electric wheelchair M1 Traveling motor M2 Steering motor A1 Actuator

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ Identification code FI theme code (reference) G06F 17/60 342 G06F 17/60 342 506 506 ZEC ZEC F term (reference) 5H301 AA01 AA09 BB20 CC03 CC06 DD07 DD17 FF08 FF11 GG07 GG14 HH02 HH06 HH10 JJ01 KK02 KK03 KK04 KK08 KK18 KK20 LL01 LL03 LL08 LL11 LL12 LL14

Claims (9)

[Claims] 1. A plurality of self-propelled electric wheelchairs that are drive-controlled by wireless signals, a centralized management computer that centrally manages the driving states of the plurality of self-propelled electric wheelchairs by wireless signals, and the self-propelled electric wheelchairs. A system for renting a self-propelled electric wheelchair equipped with a calling terminal for attracting the self-propelled electric wheelchair by a wireless signal, wherein the self-propelled electric wheelchair is steadily and circulated along a preset course in the central control computer. A vehicle for dispatching to a location where the calling terminal is, by selecting the one of the plurality of self-propelled electric wheelchairs by detecting a calling signal from the calling terminal and a steady running control means for driving the vehicle Dispatch control means and vehicle return control means for returning the self-propelled electric wheelchair to a preset course after the user confirms the boarding Self-propelled electric wheelchair lending system, characterized in that there. 2. A vehicle current position detecting means for detecting the current positions of the plurality of self-propelled electric wheelchairs is additionally provided, and the steady running control means is provided with the preset course and the vehicle current position detecting means. A rudder for correcting the rudder angle of the self-propelled electric wheelchair so that the movement trajectory of the self-propelled electric wheelchair matches the preset course based on the detected deviation from the current position of the self-propelled electric wheelchair. The rental system for a self-propelled electric wheelchair according to claim 1, wherein a corner correction function is provided. 3. The vehicle current position detection means is based on a plurality of transmitting antennas arranged in a traveling area of the self-propelled electric wheelchair and electric field strengths of radio waves output from the plurality of transmitting antennas. It is constituted by a microprocessor on each self-propelled electric wheelchair for obtaining a position, and a transmission means on each self-propelled electric wheelchair for transmitting the current position obtained by the microprocessor to the centralized management computer. The rental system for a self-propelled electric wheelchair according to claim 2. 4. A self-propelled electric wheelchair that is provided with a location detecting means for detecting the location of the calling terminal, and the vehicle dispatch control means is provided with a self-propelled electric wheelchair closest to the location detected by the location detecting means. The self-propelled electric wheelchair rental system according to claim 2 or 3, further comprising an optimal vehicle selection function for selecting and dispatching the calling terminal to the location of the calling terminal. 5. The calling terminal is a portable calling terminal, and the location detecting means includes a plurality of transmitting antennas arranged in a traveling area of the self-propelled electric wheelchair, and a plurality of transmitting antennas. A microprocessor on the calling terminal that determines the current position based on the electric field strength of the output radio wave, and a calling terminal that transmits the current position determined by the microprocessor to the centralized management computer as the location of the calling terminal. The rental system for a self-propelled electric wheelchair according to claim 4, characterized in that the rental system comprises a transmission means. 6. The steady running control means stores a plurality of courses for cyclically running the self-propelled electric wheelchair, and selectively sets a course for each of the self-propelled electric wheelchairs. The vehicle-specific course setting function according to claim 1, claim 2, claim 3,
The rental system for a self-propelled electric wheelchair according to claim 4 or 5. 7. The stationary traveling control means detects a stop signal from the self-propelled electric wheelchair, and outputs the stop signal to a self-propelled electric wheelchair set to the same course as the self-propelled electric wheelchair. The self-propelled electric wheelchair renting system according to claim 6, further comprising an approach prevention function for stopping all of them. 8. Each of the self-propelled electric wheelchairs includes an approach detection sensor for detecting an obstacle in front of the wheelchair and ignoring a command from the centralized management computer when the approach detection sensor detects an obstacle. An emergency stop control means for holding the stopped state of the self-propelled electric wheelchair is provided, claim 1, claim 2, claim 3, claim 4, claim 5, claim 6 or claim. Item 7. The self-propelled electric wheelchair rental system according to item 7. 9. The vehicle recovery control means is provided with a vehicle recovery function for forcibly returning the self-propelled electric wheelchair to the course when the user's riding is not confirmed for a certain time or longer. The claim 1, claim 2, claim 3, claim 4, claim 5, claim 6, claim 8 or claim 9 of the self-propelled electric wheelchair rental system.