JPH0319998B2 - - Google Patents

Description

[Detailed Description of the Invention] "Industrial Application Field" The present invention enables central management of a base station to collect dynamic information (rental trips, premiums, empty cars, forwarding, etc.) of a large number of mobile stations (taxis) managed by the company. Relating to a device for discriminating between an empty car being dispatched when a vehicle is picking up a passenger based on a vehicle dispatch command from a base station, and an originally vacant vehicle after the passenger has alighted, when the vehicle is automatically collected and displayed in a room. It is something.

``Conventional technology'' In taxi operations, it is necessary to know where and what hundreds or more vehicles are currently doing over a long period of time, from early morning until late at night. Furthermore, when a customer requests a ride, it is desirable to quickly find a vacant car near the customer and quickly issue an appropriate vehicle allocation order.

Conventionally, vehicle dynamic display devices for this type of taxi include (1) semi-automatic method (manual setting method), (2)
Three methods are known to be viable: a distributed transmission method and (3) a distributed reception method.

(1) Semi-automatic method The taxi operating area is divided into several to dozens of blocks and a number is assigned to each block. When a customer orders a ride, the base station presses the corresponding region button. Then, a district-specific polling signal is emitted. This signal is received by all mobile stations (taxi radios), but if the driver has pressed the button for that area, it also matches the polling signal, and the car is empty, the vehicle number will be sent to the mobile station. makes a call. The base station receives this information, displays it, and issues a dispatch order from there.

(2) Distributed transmission method Business areas will be divided in the same manner as above.

A sign post (small transmitter) is installed in the center of each divided block. When a vehicle enters a point within a business area from outside the business area, the area of the nearest sign post is memorized, and even if the vehicle passes through that area, it remains in that area. Next, when moving into the area of another sign post, the storage of the position group signal of the previous sign post is erased and the position group signal of the new sign post is stored. In this way, the position group signal of the nearest sign post is stored each time the vehicle moves. When the vehicle leaves the service area, the position group signal is erased after a certain period of time. After the position group signal is stored in the mobile station in this way, the operation is similar to the semi-automatic system, in which a dispatch command is issued. Note that in both the semi-automatic method and the distributed transmission method, position information is stored in the mobile station, and the corresponding vehicle returns its vehicle number in response to a region-designated polling signal from the base station.

(3) Distributed reception method The business area is divided into multiple blocks as in methods (1) and (2) above. At the center of each block, a distributed receiver for collecting vehicle number information and a base station are connected by a dedicated circuit. Since the mobile station issues a car number signal when the car is empty, this signal is received by nearby distributed receivers, and the car number information is sent by wire to the base station. In this way, data on the location of the mobile station and the vehicle number are collected. The dispatch command is the same as the methods (1) and (2) above.

``Problem to be solved by the invention'' In any of the three methods described above, it is difficult to distinguish between empty cars being dispatched and real empty cars in the dynamic signals sent from the mobile station to the base station. , both have a response as empty. As a result, a dispatch command may be issued again to an empty vehicle that is currently being dispatched, resulting in a problem that the dispatch command lacks accuracy and promptness.

An object of the present invention is to provide a device that can distinguish between empty cars being dispatched and actually empty cars, and issue a dispatch command quickly and accurately.

"Means for Solving the Problems" The present invention is a taxi vacant vehicle determination device having a mobile station 1 and a base station 2, wherein the mobile station 1 is mounted on a taxi and has a vehicle number data generation circuit 5 and a vehicle number data generation circuit 5. , a mobile station information processing device 20 having a mobile station timer 4, and a radio device 7, and the mobile station information processing device 20 receives dynamic information such as fares, premiums, empty cars, and forwarding from the taximeter 3. , a signal for resetting and restarting the mobile station timer 4 when an actual vehicle changes to an empty vehicle, and vehicle number information from the vehicle number data generation circuit 5 are input, and the radio 7 collects general data from the base station 2. When a polling signal for vehicle allocation processing is received, the dynamic information, vehicle number information, and time information of the mobile station timer 4 are received. number information, radio 7
The base station 2 includes a base station information processing device 10 having a base station timer 15 corresponding to each mobile station 1, an operating device 9, and a display device 11. and a radio device 12, and the base station information processing device 10 transmits a polling signal for general data collection or a polling signal for vehicle allocation processing to the mobile station via the radio device 12 using the operating device 9. 1, input the dynamic information received from the mobile station 1 in response to each polling signal, the vehicle number information, and the time information of the mobile station timer 4, or the vehicle number information, and input the vehicle dispatch command information. When transmitting, base station timer 1 corresponding to mobile station 1
The time information of the mobile station timer 4 received from the mobile station 1 is compared with the time information of the corresponding base station timer 15, and if the time information of the base station timer 15 is large, the mobile station This is a taxi vacancy determination device that displays on a display device 11 the car number information that allows one vacancy.

"Operation" Base station 2 has base station timer 1 for all taxis.
5, each mobile station 1 is provided with its own mobile station timer 4, and when the base station 2 issues a dispatch command to a certain taxi, the corresponding base station timer 15 in the base station 2 is reset once. Reboot. Furthermore, the mobile station timer 4 is reset and activated when the vehicle changes from an actual vehicle to an empty vehicle. and,
When base station 2 polls for vehicle allocation processing, comparison circuit 17 compares the data of timers 4 and 15 of base station 2 and mobile station 1, and determines that the base station timer time is smaller than the mobile station timer time. It is determined that the vehicle is a vacant vehicle that is being dispatched, and the display device 11 does not display vacant vehicle information. Conversely, when the base station timer time is longer than the mobile station timer time, it is determined that the car is actually empty, and empty car information is displayed on the display device 11.

“Embodiment” An embodiment of the present invention will be described below based on the drawings.

In FIG. 1, 1 is a mobile station and 2 is a base station.

The mobile station 1 includes a taximeter 3, a car number data generation circuit 5, and a mobile station information processing device 20.
and a radio device 7 having an antenna 8. This mobile station information processing device 20 includes a mobile station timer 4
and a control circuit 6, which generates dynamic information from the taxi meter 3 such as fare, surcharge, empty car, forwarding, etc., a signal to reset and restart the mobile station timer 4 when the car changes from an actual car to an empty car, and car number data. The vehicle number information is input from the circuit 5, and when the radio 7 of the mobile station 1 receives a polling signal for general data collection from the base station 2, the dynamic information and the vehicle number information are input.
The time information of the mobile station timer 4 is transmitted.

The base station 2 includes an operating device 9 that issues vehicle dispatch commands, data collection commands, etc., a base station information processing device 10 that processes various data, a vehicle status display device 11 such as a CRT display, and an antenna 13.
It consists of a radio device 12 having a. The mobile station information processing device 20 includes a polling signal generation circuit 14
and base station timer 1 provided for each mobile station.
5, a reception data buffer circuit 16 that stores timer times for the number of mobile stations, a comparison circuit 17 that compares the data of the base station timer 15 and the mobile station timer 4, a display control circuit 18, and a gate circuit 19. It consists of.

Next, the operation of the device according to the present invention will be explained.

When the radio device 7 of the mobile station 1 receives a polling signal for general data collection from the base station 2, it receives dynamic information such as rental runs, premiums, empty cars, forwarding, etc.
All information such as unique vehicle number information of the mobile station 1 and time information of the mobile station timer 4 is transmitted to the base station 2.

The base station 2 displays each piece of information on the display device 11 based on the information received via the antenna 13 and the radio device 12.

Next, a case will be described in which the radio device 12 of the base station 2 transmits a polling signal for vehicle allocation processing to the mobile station 1.

When the mobile station 1 returns the taximeter 3 from an actual vehicle to an empty vehicle when a passenger alights, a dynamic signal indicating that the vehicle has become empty is sent to the control circuit 6 of the mobile station information processing device 20, and at the same time, a signal from the taximeter 3 is sent to the control circuit 6 of the mobile station information processing device 20. A reset signal is output, and at time t1 in FIG. ₂ , the mobile station timer 4 is reset and restarted, and this activated time data is also sent to the control circuit 6.

Next, the base station 2 searches for a specific vacant taxi A and sends it to the second taxi from the operating device 9.
When a dispatch command is issued at _t2 in the figure, a reset signal is output and the base station timer 15 for that taxi A is reset among the multiple base station timers 15 in the base station 2.
Just reset and reboot.

Here, at time _t3 , the operating device 9 of the base station 2 is operated, and a polling signal for vehicle allocation processing is emitted from the polling generation circuit 14 to the mobile station 1 via the radio 12 and the antenna 13.

When polling is performed by specifying a specific area, vacant cars within the area will return their car numbers, but usually there are multiple such vehicles. If these respond all at once, signal collision will occur, and the base station will not be able to obtain correct information. As a countermeasure to this problem, collisions caused by simultaneous calls are prevented by sequentially allocating a unique response time to each vehicle after the polling signal is sent. This polling signal is sent to the antenna 8 of the mobile station 1 mounted on the specific taxi A, and the radio 7
When received from the mobile station 1, the time data of the mobile station 1 is sent to the mobile station information processing device 20 along with the dynamic information necessary for dispatching the vehicle (such as whether it is a paid vehicle or an empty vehicle).
from the control circuit 6 to the radio 7 and antenna 8,
This time data is transferred to the base station 2 and input to the reception data buffer circuit 16 and display control circuit 18. Here, based on a command from the operating device 9 of the base station 2, the time data FT ₁ of the base station 2 of the specific taxi A is transmitted.
is sent to the comparison circuit 17, and the received time data _MT1 of the mobile station 1 of taxi A is also sent to the comparison circuit 17.
These data MT ₁ and FT ₁ are compared in a comparison circuit 17. Since we have just issued a dispatch order to specific taxi A at t ₂ o'clock, at t ₃ o'clock
MT ₁ > FT ₁ , the output of the comparison circuit 17 does not appear, the gate circuit 19 remains closed, the output of the display control circuit 18 is not sent to the vehicle status display device 11, and taxi A is empty. is not displayed. In other words, an empty car that is being dispatched will not be displayed as empty.

Next, even if you issue a dispatch order, the customer gets off the vehicle.
When the taximeter 3 is returned to an empty car at _t4 , the timer mobile station timer 4 is reset and restarted again.
At t ₅ o'clock when the car is empty and no dispatch order has been issued,
When the polling signal is emitted from the base station 2, since the base station timer 15 of the base station 2 has not been reset, time data FT ₂ from t ₂ o'clock to t ₅ o'clock is sent to the comparator circuit 17, and the mobile station Since the mobile station timer 4 of No. 1 is reset and restarted at t ₄ when it becomes empty, the time data MT ₂ from t ₄ to t ₅ is transferred to the received data buffer circuit 16 and the display control circuit 18.
sent to. At t ₅ , since MT ₂ < FT ₂ , an output appears from the comparator circuit 17 to open the gate circuit 19, and an output from the display control circuit 18 is sent to the vehicle status display device 11, confirming that the vehicle is actually empty. indicate.

"Effects of the Invention" As described above, the present invention compares the timer time of the mobile station and the timer time of the base station, and uses the size of the timer time to distinguish between an empty vehicle being dispatched and an originally vacant vehicle. There is no need to issue a dispatch command again to an empty car, and it is possible to issue a dispatch command appropriately and quickly, and to shorten the communication time to a large number of taxis. Furthermore, when a polling signal for dispatch processing is emitted, information on taxis differentiated by car number information from among a plurality of taxis can be accurately collected, and only the information necessary for dispatch can be collected in a short time.
Furthermore, since the mobile station is provided with a mobile station timer, and the base station is only provided with a base station timer, a comparison circuit, and a gate circuit, the circuit configuration is simple and can be provided at low cost.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing an embodiment of the taxi vacancy determining device according to the present invention, and FIG. 2 is an explanatory diagram of the taxi vacancy determining device according to the present invention. DESCRIPTION OF SYMBOLS 1... Mobile station, 2... Base station, 3... Taximeter, 4... Mobile station timer, 5... Vehicle number data generation circuit, 6... Control circuit, 7... Wireless device, 8...
...Antenna, 9...Operation device, 10...Base station information processing device, 11...Vehicle status display device, 1
2...Radio device, 13...Antenna, 14...Polling signal generation circuit, 15...Base station timer, 1
6... Reception data buffer circuit, 17... Comparison circuit, 18... Display control circuit, 19... Gate circuit, 20... Mobile station information processing device.

Claims (1)

[Scope of Claims] 1. A taxi vacant vehicle determination device having a mobile station 1 and a base station 2, wherein the mobile station 1 is mounted on the taxi and has a vehicle number data generation circuit 5 and a mobile station timer 4. The mobile station information processing device 20 has a mobile station information processing device 20 and a radio device 7, and the mobile station information processing device 20 receives dynamic information such as taxi fare, surcharge, empty car, forwarding, etc. from the taxi meter 3, and information about changes from an actual car to an empty car. The radio device 7 receives a polling signal for general data collection from the base station 2. When this happens, the dynamic information, vehicle number information, and time information of the mobile station timer 4 are received, and when the polling signal for vehicle dispatch processing is received and the vehicle dispatch conditions are met, the vehicle number information is transmitted to the radio. 7
The base station 2 includes a base station information processing device 10 having a base station timer 15 corresponding to each mobile station 1, an operating device 9, and a display device 11. and a radio device 12, and the base station information processing device 10 transmits a polling signal for general data collection or a polling signal for vehicle allocation processing to the mobile station via the radio device 12 using the operating device 9. 1, input the dynamic information received from the mobile station 1 in response to each polling signal, the vehicle number information, and the time information of the mobile station timer 4, or the vehicle number information, and input the vehicle dispatch command information. When transmitting, base station timer 1 corresponding to mobile station 1
The time information of the mobile station timer 4 received from the mobile station 1 is compared with the time information of the corresponding base station timer 15, and if the time information of the base station timer 15 is large, the mobile station This is a taxi vacancy determination device that displays car number information for one available vacancy on a display device 11.