JP2005149039A - Vehicle allocation management system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vehicle allocation management system that ensures that vehicles are delivered to customers and that even if cancellation data sent by a vehicle allocation center do not reach vehicles, there is no fear that vehicles are doubly allocated. <P>SOLUTION: The vehicle allocation management system comprises a vehicle allocation center which sends vehicle allocation data via a radio communication means to direct allocation of vehicles, and a plurality of vehicles each of which receives the vehicle allocation data. The vehicle allocation center has a vehicle allocation data sending means for sending the vehicle allocation data to the first vehicle to be directed for allocation and the second vehicle alternatively directed for allocation, and a cancellation data sending means for sending cancellation data to cancel the direction of vehicle allocation to the first vehicle. The second vehicle has a vehicle allocation data receiving means for receiving the vehicle allocation data and a cancellation data resending means for causing the cancellation data to the first vehicle to be sent to the first vehicle. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a vehicle allocation management system that instructs a vehicle such as a taxi to allocate a vehicle from a vehicle allocation center via a self-operated radio system.

  In a vehicle allocation management system in which a vehicle allocation instruction is given from a vehicle allocation center to a vehicle via a self-managed radio system, each vehicle (mobile station) at any time receives vehicle data indicating the current position, vehicle status such as an empty vehicle / actual vehicle, etc. The dispatch center stores the received vehicle data of all the vehicles in the memory. When a vehicle dispatch request is received from a customer, the vehicle dispatch center searches for an empty vehicle close to the customer and wirelessly transmits dispatch data instructing the vehicle to dispatch.

  On the other hand, if it is determined that the vehicle that has received the vehicle allocation data can be allocated, it transmits acknowledgment data (acceptance data indicating acceptance) to the vehicle allocation center. In this way, the dispatch instruction is completed.

  At this time, there is a case where the dispatch data has not arrived at the vehicle that is first instructed to dispatch, or that the dispatch data has arrived but the approval data transmitted by the vehicle cannot be received by the dispatch center. In such a case, cancel data for canceling the dispatch instruction once transmitted to the vehicle that has been instructed to dispatch is transmitted. Thereafter, another vehicle close to the customer is searched again, and dispatch data is transmitted to the vehicle. If it is determined that the vehicle having received the dispatch data can be dispatched, the approval data is similarly transmitted to the dispatch center. In this way, the vehicle can be reliably delivered to the customer.

Prior art documents relating to the invention of this application include the following.
JP 2001-167392 A

  In the conventional vehicle allocation management system, if the approval / disapproval data for the allocation cannot be received from the vehicle instructed to allocate the vehicle first, the vehicle can be surely allocated to the customer by instructing the allocation of the next vehicle. However, if the vehicle that is first instructed to dispatch the vehicle transmits the approval data but cannot receive the approval data at the dispatch center, the cancellation data is transmitted to cancel the once-instructed vehicle allocation. However, depending on the position of the first vehicle, the cancellation data transmitted by the dispatch center may not reach the vehicle. At that time, both the first vehicle and the next vehicle are instructed to dispatch, and there is a problem that two vehicles are dispatched to the customer.

  This invention is made in view of such a point, and makes it a subject to provide the vehicle dispatch management system which can be surely dispatched to a customer, and is not doublely dispatched.

  In order to achieve the above object, the present invention provides a vehicle comprising a vehicle allocation center that transmits vehicle allocation data instructing vehicle allocation via wireless communication means, and a plurality of vehicles that receive the vehicle allocation data from the vehicle allocation center. In the vehicle allocation management system, the vehicle allocation center includes a first vehicle that issues a vehicle allocation instruction first, vehicle allocation data transmission means that transmits the vehicle allocation data to a second vehicle that issues a vehicle allocation instruction as an alternative to the first vehicle, Cancel data transmission means for transmitting cancellation data for canceling a dispatch instruction to the first vehicle, wherein the second vehicle has dispatch data reception means for receiving the dispatch data, and cancellation data for the first vehicle. Is provided with cancellation data re-transmission means for transmitting to the first vehicle.

  In addition, the vehicle includes a permission / rejection data transmission unit that transmits permission / rejection data indicating whether or not to accept a dispatching instruction to the dispatching center, and the dispatching center detects acceptance / rejection data detection that detects that the permission / rejection data has been received. And the cancellation data transmission means sends the cancellation data to the first vehicle and / or the second vehicle when the consent data detection means cannot detect the acceptance data within a predetermined time. It transmits to the vehicle of this, It is characterized by the above-mentioned.

  The second vehicle includes cancellation data receiving means for receiving cancellation data for the first vehicle, and the cancellation data retransmitting means receives the cancellation data received by the cancellation data receiving means. It transmits to the vehicle of this, It is characterized by the above-mentioned.

  In addition, the second vehicle is configured such that when the wireless communication means has a transmission frequency of the transmission wave from the vehicle allocation center to the vehicle different from the transmission frequency of the transmission wave from the vehicle to the vehicle allocation center, the second vehicle When the cancellation data is transmitted to the first vehicle, there is provided frequency changing means for temporarily changing to a frequency of a transmission wave transmitted from the dispatch center to the vehicle.

  In addition, when the cancellation data is transmitted from the second vehicle to the first vehicle, a communication unit using weak radio waves is used.

  Further, when the cancellation data is transmitted from the second vehicle to the first vehicle, a communication means using a public line network is used.

  Further, in the vehicle dispatch management system comprising a dispatch center that transmits dispatch data for instructing dispatch via wireless communication means, and a plurality of vehicles that receive the dispatch data from the dispatch center, the dispatch data includes Identification data for identifying other vehicle allocation data is added, and the vehicle allocation center is transmitted from the vehicle, vehicle allocation data transmitting means for transmitting the vehicle allocation data with the identification data added to the vehicle instructing vehicle allocation. Identification data detecting means for detecting that the received identification data has been received, and cancellation data transmitting means for transmitting cancellation data for canceling a dispatch instruction to the vehicle, wherein the vehicle receives the dispatch data to which the identification data is added. Vehicle allocation data receiving means, and vehicle allocation data to which the identification data received by the vehicle allocation data receiving means is added are completed. Dispatch data storage means for storing until the vehicle dispatch data is stored, and while the dispatch data to which the identification data is added is stored in the dispatch data storage means, the identification data added to the dispatch data is transmitted to the dispatch center. An identification data transmission unit is provided, and the cancellation data transmission unit transmits the cancellation data again when the identification data detection unit detects the identification data after the cancellation data is transmitted.

  Also, a vehicle dispatching center for transmitting dispatching data for instructing dispatching, and receiving the dispatching data from the dispatching center and transmitting approval / disapproval data indicating whether to accept the dispatching instruction to the dispatching center via wireless communication means. In the vehicle allocation management system configured by a plurality of vehicles, the allocation center includes an electric field intensity map indicating an electric field intensity of a radio wave transmitted from the allocation center, and an electric field at the position of the vehicle based on the electric field intensity map. Electric field strength calculating means for calculating strength, transmission number specifying means for specifying the number of transmissions of acceptance / rejection data transmitted by the vehicle that has received the dispatch data based on the electric field strength calculated by the electric field strength calculating means, and the vehicle The vehicle dispatch data and the number of times data transmission means for transmitting the number of times of data designating the number of times of transmission, and the vehicle includes the vehicle dispatch data and the A number-of-times data receiving means for receiving number data, and a permission / rejection data transmitting means for transmitting the permission / rejection data to the dispatch center, wherein the acceptance / rejection data transmitting means is based on the number of times data received by the number of times data receiving means The acceptance / rejection data is transmitted to the vehicle dispatch center a specified number of times.

  Also, a vehicle dispatching center for transmitting dispatching data for instructing dispatching, and receiving the dispatching data from the dispatching center and transmitting approval / disapproval data indicating whether to accept the dispatching instruction to the dispatching center via wireless communication means. In the vehicle allocation management system comprising a plurality of vehicles, the vehicle includes a vehicle allocation data receiving unit that receives the vehicle allocation data, an approval / disapproval data transmission unit that transmits the approval / disapproval data to the vehicle allocation center, and the vehicle allocation center. An electric field intensity map indicating the electric field intensity of the radio wave transmitted from the electric field intensity calculating means for calculating the electric field intensity at the position of the vehicle based on the electric field intensity map; and the electric field intensity calculated by the electric field intensity calculating means. Transmission number setting means for setting the number of transmissions of the acceptance / rejection data, the acceptance / rejection data transmission means by the transmission number setting means Based on the constant has been frequency data, is characterized in that the set number of times transmitting said yes or no data to the dispatch center.

  Also, a vehicle dispatching center for transmitting dispatching data for instructing dispatching, and receiving the dispatching data from the dispatching center and transmitting approval / disapproval data indicating whether to accept the dispatching instruction to the dispatching center via wireless communication means. In the vehicle allocation management system configured by a plurality of vehicles, the vehicle includes allocation data reception means for receiving the allocation data, and reception level detection means for detecting a reception level of a received radio wave received from the allocation center. A number setting means for setting the number of transmissions of the acceptance / rejection data based on the reception level detected by the reception level detection means, and the acceptance / rejection data based on the number of times data set by the number of times setting means. Is transmitted a set number of times.

  Further, in the vehicle allocation management system comprising a vehicle allocation center that transmits vehicle allocation data for instructing vehicle allocation via wireless communication means and a plurality of vehicles that receive the vehicle allocation data from the vehicle allocation center, the vehicle allocation center includes: Detecting in advance that confirmation data transmitting means for transmitting confirmation data for confirming whether or not the vehicle dispatch center and the vehicle can normally communicate to the vehicle and receiving a response to the confirmation data from the vehicle Response data detection means, and dispatch data transmission means for transmitting the dispatch data only to a vehicle for which the response data can be detected by the response data detection means.

  ADVANTAGE OF THE INVENTION According to this invention, the vehicle dispatch management system which can be surely dispatched to a customer and is not dispatched twice can be provided.

  A vehicle dispatch management system according to an embodiment of the present invention will be described with reference to the drawings.

  FIG. 1 is a block diagram showing a configuration of a vehicle dispatch management system according to a first embodiment of the present invention. FIG. 2 is a block diagram showing the configuration of each part of the vehicle allocation management system according to the first embodiment of the present invention, where (a) is a configuration diagram on the vehicle 1 side, and (b) is a configuration diagram on the allocation center 2 side. is there. FIG. 3 is a flowchart of processing performed by each control unit of the vehicle dispatch management system according to the first embodiment of the present invention. (A) is a process of the dispatch center 2, (b) is a process of the first car 1a, (c ) Is the process of the second car 1b. FIG. 4 is a relationship diagram showing the positional relationship between the dispatch center 2, the first car 1a, the second car 1b, and the customer. In the present embodiment, the data (hereinafter referred to as dispatch data) instructing the dispatch of the first vehicle (referred to as the first car 1a) arrives and the vehicle that has received the dispatch data accepts the dispatch instruction. The dispatch center 2 dispatches to the next vehicle (referred to as the second car 1b) when the dispatch center 2 cannot receive the consent data even though the acceptance / rejection data (hereinafter referred to as consent data) is transmitted to the dispatch center 2. Even if the data is transmitted, it will prevent double allocation.

  Reference numerals 1a, 1b to 1n denote vehicles such as taxis that receive a dispatch instruction and correspond to the first car, the second car, and the nth car, respectively. A navigation unit 10 detects the position of the vehicle, identifies the traveling road by comparing with the map information, displays the position of the vehicle on the map, and guides the traveling of the vehicle. Reference numeral 11 denotes a GPS receiver that receives radio waves from a GPS satellite and detects the position of the vehicle. Reference numeral 12 denotes a map database composed of a CD-ROM or DVD in which map information is recorded and a driving device for the CD-ROM or DVD. A vehicle speed (distance) sensor 13 detects the traveling speed of the vehicle, and uses a signal from the vehicle speedometer. Reference numeral 14 denotes an orientation sensor such as a gyro for detecting the orientation of the vehicle. Reference numeral 15 denotes a control unit that collates the vehicle position with the map information to identify the road on which the vehicle is traveling, displays the vehicle position on the map, and guides the vehicle traveling. Consists of a computer. 16 transmits vehicle data such as the current position, vehicle status such as an empty vehicle / actual vehicle, etc. to the dispatch center 2 and approval data for the dispatch instruction to the dispatch center 2, dispatch data from the dispatch center 2, and the dispatch data once transmitted. Is a transceiver of a private wireless system that receives data (hereinafter referred to as cancellation data) and the like. A display unit 17 displays a map and a vehicle position on the map, and includes a liquid crystal display panel and a drive circuit thereof. Reference numeral 18 denotes an audio output unit that outputs audio for guidance. Reference numeral 19 denotes an operation unit for the driver to give an instruction for understanding various inputs and dispatch instructions and to instruct the execution of various processes, and includes a push button switch, a touch panel switch, and the like.

  Reference numeral 2 denotes a vehicle allocation center that instructs each vehicle (1a, 1b to 1n) to allocate a vehicle or cancel a vehicle allocation. 21 transmits dispatch data and cancellation data to each vehicle (1a, 1b to 1n), and from each vehicle (1a, 1b to 1n), vehicle data such as the current position, vehicle status such as empty / actual vehicle, and acknowledgment data. It is a transceiver of a private wireless system that receives 22 collects from each vehicle (1a, 1b to 1n) and, based on the accumulated vehicle data, searches for an empty vehicle 1 close to the customer when there is a request for vehicle allocation from the customer, and instructs the vehicle 1 to allocate the vehicle. Or a control unit for instructing cancellation of vehicle allocation, and is composed of a microcomputer. A display unit 23 displays a map and vehicle data such as a vehicle position and an empty vehicle / actual vehicle on the map. Reference numeral 24 denotes an audio output unit that outputs audio received from each vehicle (1a, 1b to 1n). Reference numeral 25 denotes an operation unit for instructing various inputs, dispatch instructions, and execution of various processes, and includes a push button switch, a touch panel switch, and the like.

  First, the processing performed by the control unit 22 of the dispatch center 2 will be described with reference to the flowchart of FIG.

  In step S11, dispatch data is transmitted to the first car 1a, and the process proceeds to step S12. That is, when there is a vehicle allocation request from the customer, the vehicle 1 of the empty vehicle closest to the customer is acquired based on the vehicle data such as the current position and the empty vehicle / actual vehicle acquired from each vehicle (1a, 1b to 1n). Search for. Then, in order to instruct the vehicle (hereinafter, the first vehicle to be instructed to dispatch) is referred to as the first car 1a, the dispatch data is transmitted via the transceiver 21.

  In step S12, it is determined whether or not the approval data can be received from the first car 1a. If the approval data can be received, the process proceeds to step S17. If the approval data cannot be received, the process proceeds to step S13. The approval data is transmitted from the vehicle 1 by operating a switch for answering the approval if the driver can receive a dispatch instruction from the dispatch center 2.

  In step S13, the dispatch data to the second car 1b and the cancellation data to the first car 1a are transmitted to the second car 1b, and the process proceeds to step S14. That is, the dispatch data is transmitted to the first car 1a closest to the customer, but there is no response (acknowledgment data cannot be received). Therefore, in order not to wait for the customer, the next nearest empty vehicle (hereinafter referred to as the second vehicle 1b) is searched based on the vehicle data such as the current position and empty / actual vehicles. . As shown in FIG. 4, since the distance (L21) from the second car 1b to the first car 1a is closer than the distance (L1) from the dispatch center 2 to the first car 1a, the cancellation data transmitted from the dispatch center 2 is Even if it cannot be received by the first car 1a, the cancellation data transmitted from the second car 1b should be surely received by the first car 1a. Therefore, the dispatch data for instructing the dispatch to the second car 1b and the cancellation data to be transmitted from the second car 1b to the first car 1a so as not to double the dispatch with the first car 1a which has already instructed the dispatch. It transmits via the transceiver 21.

  In step S14, cancellation data is transmitted to the first car 1a, and the process proceeds to step S15. In other words, the first car 1a has already been instructed to dispatch, but there is no response (cannot receive acknowledgment data), so the second car 1b was instructed to dispatch instead. Therefore, cancel data is transmitted to the first car 1a via the transceiver 21 so as not to cause double allocation.

  In step S15, the approval data is received from the second car 1b, and the process proceeds to step S16.

  In step S16, the dispatching process to the second car 1b is completed and the process ends. That is, since the approval data is received from the second car 1b, the dispatching process to the second car 1b is completed.

  In step S17, the dispatching process to the first car 1a is completed and the process ends. That is, since the approval data is received from the first car 1a, the dispatching process to the first car 1a is completed. No dispatch instruction is given to the second car 1b.

  Next, processing performed by the control unit 15 of the second car 1b will be described with reference to the flowchart of FIG.

  In step S21, the dispatch data is received from the dispatch center 2, and the process proceeds to step S22. That is, the dispatch data is received via the transceiver 16. If the dispatch data cannot be received, the first car 1a does not go to the customer, so double dispatch is not performed.

  In step S22, consent data is transmitted to the dispatch center 2, and the process proceeds to step S23. The approval data is transmitted from the vehicle 1 by operating a switch for answering the approval if the driver can receive an instruction from the dispatch center 2.

  In step S23, a vehicle allocation process is performed and the process proceeds to step S24. Since the dispatch data for the host vehicle is received and the approval data is transmitted to the dispatch center 2, the dispatch process is performed. This process is performed regardless of whether or not the approval data transmitted to the dispatch center 2 is received by the dispatch center 2.

  In step S24, it is determined whether or not cancellation data is received from the dispatch center 2. If cancellation data is received, the process proceeds to step S26, and if cancellation data is not received, the process proceeds to step S25.

  In step S25, cancel data is received from the second car 1b, and the process proceeds to step S26. That is, the cancel data is received via the transceiver 16. As shown in FIG. 4, since the distance (L21) from the second car 1b to the first car 1a is short, even if the cancellation data transmitted from the dispatch center 2 cannot be received by the first car 1a, the cancellation transmitted from the second car 1b. The data can be reliably received by the first car 1a.

  In step S26, a cancel process is performed and the process ends. That is, since the cancel data is received from the dispatch center 2 or the second car 1b, the dispatch is cancelled. This process can surely prevent the first car 1a from going to the customer.

  Next, processing performed by the control unit 15 of the second car 1b will be described with reference to the flowchart of FIG.

  In step S31, the dispatch data and the cancel data for the first car 1a are received from the dispatch center 2, and the process proceeds to step S32. In other words, the dispatch data to the own vehicle and the cancel data for canceling the dispatch so as not to double the dispatch to the first car 1a are received via the transceiver 16.

  In step S32, consent data is transmitted to the dispatch center 2, and the process proceeds to step S33. The approval data is transmitted from the vehicle 1 by operating a switch for answering the approval if the driver can receive an instruction from the dispatch center 2.

  In step S33, a vehicle allocation process is performed and the process proceeds to step S34. Since the dispatch data for the host vehicle is received and the approval data is transmitted to the dispatch center 2, the dispatch process is performed.

  In step S34, the cancellation data is transmitted to the first car, and the process ends. In other words, since the distance (L21) from the second car to the first car is shorter than the distance (L1) from the dispatch center 2 to the first car, the cancellation data transmitted from the dispatch center 2 cannot be received by the first car 1a. However, the cancellation data transmitted from the second car 1b can be reliably received by the first car.

  In addition, when the frequency for transmitting and receiving is different between the vehicle allocation center 2 and the vehicle 1 (the transmission frequency f1 from the vehicle allocation center 2 to the vehicle 1 and the transmission frequency f2 from the vehicle 1 to the vehicle allocation center 2), the second car The frequency at the time of transmission from 1b to the first car 1a is temporarily switched to the frequency f1 to be transmitted from the dispatch center 2 to the vehicle 1. In this way, the cancellation data transmitted from the second car 1b can be received by the first car 1a. When transmission / reception between the vehicle allocation center 2 and the vehicle 1 is performed at a single frequency, it is not necessary to change the transmission frequency to the vehicle allocation center 2 because it is the same.

  In step S34, in addition to the transmitter / receiver 16 for communicating with each vehicle (1a, 1b to 1n) with the dispatch center 2, the second vehicle 1b is canceled from the second vehicle 1b using a transmitter / receiver using weak radio waves. Data may be transmitted. Since the distance between the No. 2 car 1b and the No. 1 car 1a is close, communication is possible even with weak radio waves. Further, for example, cancel data may be transmitted from the second car 1b to the first car 1a using a public line network such as Dopa.

  As described above, according to the vehicle dispatch management system of the present embodiment, the first car 1a receives the cancellation data from the second car 1b that is closer to the dispatch center 2, so the probability that the first car 1a can receive the cancellation data. As a result, the vehicle allocation to the first car 1a is surely cancelled, and it is less likely to go to the customer, thereby preventing double vehicle allocation.

  FIG. 5 is a flowchart of the processing performed by each control unit of the vehicle dispatch management system according to the second embodiment of the present invention. (A) is the dispatch center process, (b) is the first car process, and (c) is the process. This is the process for Car No. 2. In this embodiment, a sequence number (identification data) for distinguishing from other dispatch data is added to each dispatch data transmitted from the dispatch center 2 to the vehicle 1, and the vehicle 1 receiving the dispatch data receives the dispatch data. While holding (that is, until dispatch is completed, for example, until cancellation data is received and cancellation processing is performed, or the instructed customer is put on or taken down), the sequence number is stored, A sequence number is added when transmitting arbitrary data (current position, vehicle data such as actual vehicle / empty vehicle status) to the dispatch center 2. Upon receiving this, the dispatch center 2 checks whether there is any dispatch data with the corresponding sequence number from the vehicle 1 that sent the cancellation data, and if there is such data, it sends the cancellation data as many times as possible. This is to prevent heavy vehicles. The system configuration is the same as that of the vehicle allocation management system according to the first embodiment, and a description thereof will be omitted.

  First, the process of the dispatch center 2 will be described with reference to the flowchart of FIG.

  In step S41, dispatch data with a sequence number is transmitted to the first car 1a, and the process proceeds to step S42. In other words, when there is a vehicle allocation request from the customer, the vehicle is acquired from each vehicle (1a, 1b to 1n), and based on the accumulated vehicle data such as the current position and the empty vehicle / actual vehicle, for example, the empty vehicle closest to the customer is selected. Search for. Then, in order to instruct the vehicle (hereinafter referred to as the first car 1a) to dispatch, the dispatch data with the sequence number is transmitted via the transceiver 21.

  In step S42, it is determined whether or not the approval data has been received from the first car 1a. If the approval data can be received, the process proceeds to step S50. If the approval data cannot be received, the process proceeds to step S43. The approval data is transmitted from the vehicle 1 by operating a switch for answering the approval if the driver can receive an instruction from the dispatch center.

  In step S43, dispatch data with a sequence number is transmitted to the second car 1b, and the process proceeds to step S44. That is, the next empty vehicle closest to the customer is searched based on the vehicle data such as the current position and the empty vehicle / actual vehicle so as not to wait for the customer. Then, in order to instruct the vehicle (hereinafter referred to as the second car 1b) to dispatch, the dispatch data is transmitted via the transceiver 21.

In step S44, cancellation data is transmitted to the first car 1a, and the process proceeds to step S45. In other words, the first car 1a closest to the customer was instructed to dispatch, but there was no response, so instead the second car 1b was instructed to dispatch. Therefore, in order to prevent double allocation to the first car 1a, cancel data for canceling the dispatch is transmitted via the transceiver 21. In step S45, the approval data is received from the second car 1b, and the process proceeds to step S46.

  In step S46, the dispatching process to the second car 1b is completed and the process ends. That is, since the approval data is received from the second car 1b, the dispatching process to the second car 1b is completed.

  In step S47, arbitrary data is received from the first car 1a and the second car 1b, and the process proceeds to step S48. Arbitrary data is position data, actual vehicle / empty state data, etc. transmitted from the vehicle 1 to the dispatch center 2, and is transmitted periodically when the actual vehicle / empty state changes every predetermined distance. The received arbitrary data is stored.

  In step S48, it is determined whether or not the received arbitrary data includes dispatch data with a sequence number corresponding to canceling dispatch. If so, the process proceeds to step S49. The processing is terminated as if the cancellation of has been completed. As a result of checking the arbitrary data received from the No. 2 car 1b, even if dispatch data with a sequence number is included, this process is ignored because it is not related to canceling the dispatch.

  In step S49, the cancel data is transmitted to the first car 1a, and the process returns to step S47. That is, as a result of checking the arbitrary data received from the first car 1a, the dispatch data with the corresponding sequence number is included, and the cancel data transmitted last time does not reach the first car 1a. Therefore, cancel data for canceling the allocation of the vehicle is transmitted again via the transceiver 21 so that the first vehicle 1a does not have a double allocation. The processing from step S47 to step S49 is repeated until no dispatch data with a sequence number is included as a result of checking arbitrary data received from the first car 1a.

  In step S50, the dispatching process to the first car 1a is completed and the process ends. That is, since the approval data is received from the first car 1a, the dispatching process to the first car 1a is completed.

  Although the vehicle allocation cancellation process ends here, the reception of arbitrary data from the first car 1a and the second car 1b is repeated thereafter.

  Next, the process of the first car 1a will be described with reference to the flowchart of FIG.

  In step S51, the dispatch data is received from the dispatch center 2, and the process proceeds to step S52. That is, the dispatch data is received via the transceiver 16.

  In step S52, consent data is transmitted to the dispatch center 2, and the process proceeds to step S53. In other words, if the driver can receive an instruction from the dispatch center 2, the approval data is operated by a switch that answers the approval.

  In step S53, a vehicle allocation process is performed, the sequence number is stored, and the process proceeds to step S54. Since the dispatch data for the host vehicle is received and the approval data is transmitted to the dispatch center 2, the dispatch process is performed. Further, it is stored in order to transmit the dispatch data with the sequence number together with the arbitrary data. This process is performed regardless of whether or not the approval data transmitted to the dispatch center 2 is received by the dispatch center 2.

  In step S54, it is determined whether or not cancel data is received from the dispatch center 2. If cancel data is received, the process proceeds to step S56. If cancel data is not received, the process proceeds to step S55.

  In step S55, arbitrary data is transmitted to the dispatch center 2, and the process returns to step S54. If the dispatch data remains when the arbitrary data is transmitted, the stored dispatch data with the sequence number is also transmitted together. The dispatch data with the sequence number is deleted from the memory when the cancel data is received and the cancel process is executed, or when the instructed customer is dropped.

  In step S56, a cancel process is performed and the process ends.

  Next, the process of the second car 1b will be described with reference to the flowchart of FIG.

  In step S61, the dispatch data is received from the dispatch center 2, and the process proceeds to step S62. That is, the dispatch data is received via the transceiver 16.

  In step S62, consent data is transmitted to the dispatch center 2, and the process proceeds to step S63. If the driver can receive an instruction from the dispatch center 2, the approval data is operated by a switch that gives an approval.

  In step S63, a vehicle allocation process is performed, the sequence number is stored, and the process proceeds to step S64. Since the dispatch data for the host vehicle is received and the approval data is transmitted to the dispatch center 2, the dispatch process is performed. Further, it is stored in order to transmit the dispatch data with the sequence number together with the arbitrary data.

  In step S64, arbitrary data is transmitted to the dispatch center 2, and the process is terminated. If dispatch data remains at the time of transmission of arbitrary data, dispatch data with a sequence number is also transmitted together.

  As described above, according to the vehicle dispatch management system of the present embodiment, the dispatch center 2 always checks the sequence number included in the arbitrary data received from each vehicle, and corresponds to the dispatch data that transmitted the cancellation data. If there is a sequence number to be transmitted, the cancellation data is transmitted as many times as possible to increase the probability that the first car 1a can receive the cancellation data, and as a result, double vehicle allocation can be prevented.

  FIG. 6 is a flowchart of processing performed by the control unit of the vehicle allocation center of the vehicle allocation management system according to the third example of the present invention. FIG. 7 is a map showing the electric field strength. In the present embodiment, after the vehicle allocation center 2 searches for a vehicle to be dispatched, the number of times the acknowledgment data is retransmitted according to the electric field strength at the vehicle position so that the acknowledgment data can be reliably received from the vehicle. It is what you specify. If the acknowledgment data transmitted from the vehicle can be reliably received, it is no longer necessary to instruct another vehicle to dispatch, and double allocation can be reliably prevented. The system configuration is the same as that of the vehicle allocation management system according to the first embodiment, and a description thereof will be omitted.

  The processing of the dispatch center 2 will be described using the flowchart of FIG.

  In step S71, a dispatch vehicle is determined and it moves to step S72. In other words, when there is a vehicle allocation request from the customer, the vehicle is acquired from each vehicle (1a, 1b to 1n), and based on the accumulated vehicle data such as the current position and the empty vehicle / actual vehicle, for example, the empty vehicle closest to the customer is selected. Search for.

  In step S72, it is determined whether or not the searched vehicle position is a position where the electric field strength is strong. If the position is high, the process proceeds to step S73. If the position is low, the process proceeds to step S75. . As shown in FIG. 7, the electric field strength is provided in advance in a map format on the vehicle dispatch center 2 side. And it judges by collating with the position of vehicles (1a, 1b-1n) received beforehand on the map. In FIG. 7, the first car 1a is located at a position where the electric field strength is weak, and the second car 1b is located at a position where the electric field strength is strong.

  In step S73, the number of acknowledgment data retransmissions is specified as two, and the process proceeds to step S74. That is, it can be determined that the position of the searched vehicle 1 (corresponding to the No. 2 car 1b in FIG. 7) is at a position where the electric field strength is strong, and transmission / reception with the vehicle 1 can be performed reliably. Therefore, the number of retransmissions of the acknowledgment data from the vehicle 1 is two.

  In step S74, the dispatch data and the number of retransmissions of the acknowledgment data are transmitted to the first car 1a, and the process ends.

  In step S75, the number of retransmissions of the acknowledgment data is specified as 7 and the process proceeds to step S74. That is, the position of the searched vehicle 1 (corresponding to the first car 1a in FIG. 7) is at a position where the electric field strength is weak, and it cannot be determined that transmission / reception with the vehicle 1 can be reliably performed. Therefore, the number of retransmissions of the acknowledgment data from the vehicle 1 is set to 7 times. Although there is an advantage that transmission / reception can be surely performed with a larger number of retransmissions of the acknowledgment data from the vehicle 1, the communication line is occupied during that time, so it is necessary to minimize it. Further, if there is a vehicle in a position where the electric field strength is extremely weak (out of the communication range), communication is not possible even if the number of retransmissions of the acknowledgment data is increased, so the number of retransmissions is set to seven.

  As described above, according to the vehicle allocation management system of the present embodiment, after the vehicle allocation center 2 searches for a vehicle to be allocated, it is possible to normally transmit and receive the allocation data and cancellation data with the vehicle. And by specifying the number of times the acknowledgment data is retransmitted so that the acknowledgment data transmitted from the vehicle 1 can be reliably received, the acknowledgment data can be reliably received regardless of the position of the vehicle 1. . As a result, it is easy to complete the vehicle allocation for the first vehicle, the vehicle allocation to the second vehicle is reduced, and the cause of double vehicle allocation can be reduced.

  In this embodiment, the electric field strength map is provided on the vehicle allocation center 2 side, and the electric field strength at the vehicle position is determined to designate the number of times to transmit the acknowledgment data. Is provided with an electric field strength map, and the electric field strength is determined based on the detected vehicle position and the electric field strength map. And you may make it set the frequency | count of transmission of consent data by the vehicle 1 side.

  FIG. 8 is a flowchart of the processing performed by the vehicle control unit of the vehicle dispatch management system according to the fourth embodiment of the present invention. In this embodiment, after the vehicle allocation data is received on the vehicle 1 side, the approval data on the vehicle 1 side according to the received electric field strength is surely received on the vehicle 1 side so that the approval data from the vehicle 1 can surely reach the vehicle allocation center 2. This determines the number of retransmissions. If the approval data transmitted from the vehicle 1 can be reliably received by the dispatch center 2, it is no longer instructed to dispatch another vehicle, and double dispatch can be reliably prevented. The system configuration is the same as that of the vehicle allocation management system according to the first embodiment, and a description thereof will be omitted.

  The process of the vehicle 1 is demonstrated using the flowchart of FIG.

  In step S81, the dispatch data is received and the process proceeds to step S82.

  In step S82, it is determined whether or not the position of the host vehicle is a position where the received electric field strength is strong. If it is a position where the received electric field strength is strong, the process proceeds to step S83. Move on. The received electric field strength is determined by receiving the radio wave transmitted from the dispatch center 2 by the transmitter / receiver 16.

  In step S83, the number of acknowledgment data retransmissions is set to two, and the flow proceeds to step S84. That is, it can be determined that the position of the host vehicle 1 is at a position where the received electric field strength is strong, and that transmission / reception with the dispatch center 2 can be reliably performed. Therefore, the number of retransmissions of the acknowledgment data from the host vehicle 1 is set to two.

  In step S84, the approval data is transmitted the set number of times to the dispatch center 2, and the process proceeds to step S85.

  In step S85, it is determined whether or not an acknowledgment response is received. If an acknowledgment response is received, the process ends. If no acknowledgment response is received, the process proceeds to step S87. When the approval data transmitted from the vehicle 1 is received at the dispatch center 2, an acknowledgment response is transmitted, whereby the vehicle 1 knows that the approval data has arrived at the dispatch center 2. When the acknowledgment response is received, the transmission of the acknowledgment data can be completed without reaching the set number of retransmissions.

  In step S86, the number of acknowledgment data retransmissions is set to seven, and the flow proceeds to step S84. That is, the position of the own vehicle 1 is at a position where the received electric field strength is weak, and transmission / reception with the dispatch center 2 is not always performed with a small number of times. Therefore, the number of retransmissions of the acknowledgment data from the host vehicle 1 is set to seven.

  In step S87, it is determined whether or not the set number of retransmissions has been completed. If the set number of retransmissions is completed, the process is terminated. If the set number of retransmissions is not completed, the process returns to step S84 to return the acknowledgment data. Repeat sending.

  As described above, according to the vehicle allocation management system of the present embodiment, after receiving the allocation data in the vehicle 1, the received electric field is received on the vehicle side so that the acknowledgment data from the vehicle can surely reach the allocation center 2. By setting the number of times that the acknowledgment data is retransmitted according to the strength, the approval data transmitted can be reliably received by the dispatch center 2 regardless of the position of the vehicle 1. As a result, it is easy to complete the vehicle allocation for the first vehicle, the vehicle allocation to the second vehicle is reduced, and the cause of double vehicle allocation can be reduced.

  FIG. 9 is a flowchart of the process performed by the control unit of the dispatch center of the vehicle dispatch management system according to the fifth embodiment of the present invention. In this embodiment, after the vehicle allocation center 2 searches for a vehicle to be allocated, whether or not the acknowledgment data can be received from the vehicle 1 is confirmed in advance before transmitting the allocation data. The vehicle allocation data is transmitted only to the vehicle 1 that can receive the vehicle to prevent double vehicle allocation. The system configuration is the same as that of the vehicle allocation management system according to the first embodiment, and a description thereof will be omitted.

  The processing of the dispatch center 2 will be described with reference to the flowchart of FIG.

  In step S91, a dispatch vehicle is determined and it moves to step S92. In other words, when there is a vehicle allocation request from the customer, the vehicle is acquired from each vehicle (1a, 1b to 1n), and based on the accumulated vehicle data such as the current position and the empty vehicle / actual vehicle, for example, the empty vehicle closest to the customer is selected. Search for.

  In step S92, a confirmation signal is transmitted and the process proceeds to step S93. The confirmation signal is a signal for confirming the state of the radio wave.

  In step S93, it is determined whether or not the response signal has been received. If the response signal can be received, the process proceeds to step S94. If the response signal cannot be received, the process proceeds to step S95. If the confirmation signal transmitted from the vehicle 1 that has received the confirmation signal transmitted from the vehicle allocation center 2 can be received by the vehicle allocation center 2, it can be determined that communication between the two can be performed reliably.

  In step S94, the dispatch data is transmitted to the first searched vehicle, and the process ends.

  In step S95, another vehicle is searched and the process returns to step S91. That is, the vehicle 1 (for example, the first car 1a) closest to the customer cannot normally communicate with the dispatch center 2. Therefore, based on the vehicle data such as the current position, empty vehicle / actual vehicle, etc., the next empty vehicle 1 (for example, No. 2 vehicle 1b) closest to the customer is searched. And a communication state is confirmed like the case of the 1st car 1a.

  As described above, according to the vehicle dispatch management system of this embodiment, after the vehicle dispatch center 2 searches for a vehicle to be dispatched, it is possible to normally send and receive dispatch data and cancellation data with the vehicle 1. Since it is determined in advance whether or not there is a vehicle and the dispatch data is transmitted only to the vehicle 1 that can normally communicate, it is easy to complete the dispatch of the first vehicle, and it is less likely to dispatch to the second vehicle. , Can reduce the cause of double dispatch.

It is a block diagram which shows the structure of the vehicle dispatch management system which concerns on 1st Example of this invention. It is a block diagram which shows the structure of each part of the vehicle allocation management system which concerns on 1st Example of this invention. It is a flowchart of the process which each control part of the vehicle allocation management system which concerns on 1st Example of this invention performs. It is a figure which shows the positional relationship of the dispatch center 2, 1st car 1a, 2nd car 1b, and a customer. It is a flowchart of the process which each control part of the vehicle allocation management system which concerns on 2nd Example of this invention performs. It is a flowchart of the process which the control part of the dispatch center of the vehicle dispatch management system which concerns on 3rd Example of this invention performs. It is a map which shows electric field strength. It is a flowchart of the process which the control part of the vehicle of the vehicle allocation management system which concerns on the 4th Example of this invention performs. It is a flowchart of the process which the control part of the dispatch center of the vehicle dispatch management system which concerns on the 5th Example of this invention performs.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1, 1a, 1b, 1n ... Vehicle 10 ... Navigation part 11 ... GPS receiver 12 ... Map database 13 ... Vehicle speed sensor 14 ... Direction sensor 15 ... Control part 16. ..Transmitter / receiver 17 ... Display unit 18 ... Audio output unit 19 ... Operating unit 2 ... Vehicle allocation center 21 ... Transmitter / receiver 22 ... Control unit 23 ... Display unit 24. ..Voice output unit 25 ... Operation unit

Claims (11)

In a vehicle dispatch management system comprising a dispatch center that transmits dispatch data for instructing dispatch via wireless communication means, and a plurality of vehicles that receive the dispatch data from the dispatch center,
The dispatch center is
A first vehicle for instructing vehicle allocation first, and a vehicle allocation data transmitting means for transmitting the vehicle allocation data to a second vehicle for instructing vehicle allocation as an alternative to the first vehicle;
Cancellation data transmission means for transmitting cancellation data for canceling a dispatch instruction to the first vehicle;
The second vehicle is
Dispatch data receiving means for receiving the dispatch data;
A vehicle allocation management system comprising cancellation data re-transmission means for transmitting cancellation data for the first vehicle to the first vehicle. The vehicle is
A permission / rejection data transmission means for transmitting permission / rejection data indicating whether or not to accept the dispatching instruction to the dispatching center;
The dispatch center is
A permission / denial data detecting means for detecting receipt of the permission / denial data,
The cancellation data transmission means transmits cancellation data for the first vehicle to the first vehicle and / or the second vehicle when the consent data detection means cannot detect the acceptance data within a predetermined time. The vehicle dispatch management system according to claim 1. The second vehicle is
Cancellation data receiving means for receiving cancellation data for the first vehicle;
2. The vehicle allocation management system according to claim 1, wherein the cancel data retransmitting means transmits the cancel data received by the cancel data receiving means to the first vehicle. The second vehicle is
When the transmission frequency of the transmission wave from the vehicle dispatch center to the vehicle and the transmission wave from the vehicle to the vehicle dispatch center are different from each other,
When the cancellation data is transmitted from the second vehicle to the first vehicle, there is provided frequency changing means for temporarily changing to a frequency of a transmission wave transmitted from the dispatch center to the vehicle. The vehicle dispatch management system according to claim 1. 4. The vehicle allocation management system according to claim 1, wherein communication means using weak radio waves is used when transmitting the cancellation data from the second vehicle to the first vehicle. 4. The vehicle allocation management system according to claim 1, wherein a communication means using a public network is used when transmitting the cancellation data from the second vehicle to the first vehicle. In a vehicle dispatch management system comprising a dispatch center that transmits dispatch data for instructing dispatch via wireless communication means, and a plurality of vehicles that receive the dispatch data from the dispatch center,
The vehicle dispatch data is added with identification data for distinguishing from other vehicle dispatch data,
The dispatch center is
A vehicle allocation data transmission means for transmitting vehicle allocation data to which the identification data is added to a vehicle that instructs vehicle allocation;
Identification data detecting means for detecting that the identification data transmitted from the vehicle has been received;
Cancellation data transmission means for transmitting cancellation data for canceling the dispatch instruction to the vehicle,
The vehicle is
Dispatch data receiving means for receiving dispatch data to which the identification data is added;
Dispatch data storage means for storing the dispatch data to which the identification data received by the dispatch data receiving means is added until the dispatch is completed;
Identification data transmission means for transmitting the identification data added to the dispatch data to the dispatch center while the dispatch data to which the identification data is added is stored in the dispatch data storage means,
The cancellation data transmission means transmits the cancellation data again when the identification data detection means detects the identification data after the cancellation data is transmitted. A dispatch center that transmits dispatch data for instructing dispatch via a wireless communication means, and a plurality of permission / rejection data that indicates whether to accept the dispatch instruction and receive the dispatch data from the dispatch center. In a vehicle dispatch management system composed of vehicles of
The dispatch center is
An electric field strength map showing the electric field strength of radio waves transmitted from the vehicle dispatch center;
Electric field strength calculating means for calculating the electric field strength at the position of the vehicle based on the electric field strength map;
Based on the electric field intensity calculated by the electric field intensity calculating means, a transmission frequency specifying means for specifying the transmission frequency of the acceptance / rejection data transmitted by the vehicle that has received the dispatch data;
A number-of-times data transmission means for transmitting the vehicle allocation data and the number of times data specifying the number of transmissions to the vehicle;
The vehicle is
Number-of-times data receiving means for receiving the dispatch data and the number-of-times data;
Including permission / rejection data transmission means for transmitting the permission / rejection data to the dispatch center,
The vehicle approval / disapproval data transmission unit transmits the approval / disapproval data to the vehicle allocation center a specified number of times based on the frequency data received by the frequency data reception unit. A dispatch center that transmits dispatch data for instructing dispatch via a wireless communication means, and a plurality of permission / rejection data that indicates whether to accept the dispatch instruction and receive the dispatch data from the dispatch center. In a vehicle dispatch management system composed of vehicles of
The vehicle is
Dispatch data receiving means for receiving the dispatch data;
A permission / rejection data transmission means for transmitting the permission / rejection data to the dispatch center;
An electric field strength map showing the electric field strength of the radio wave transmitted from the dispatch center;
Electric field strength calculating means for calculating the electric field strength at the position of the vehicle based on the electric field strength map;
Based on the electric field strength calculated by the electric field strength calculating means, comprising a transmission number setting means for setting the number of transmissions of the acceptance / rejection data,
The vehicle permission management system, wherein the permission / rejection data transmission means transmits the permission / rejection data to the vehicle dispatch center a set number of times based on the number of times data set by the transmission number setting means. A dispatch center that transmits dispatch data for instructing dispatch via a wireless communication means, and a plurality of permission / rejection data that indicates whether to accept the dispatch instruction and receive the dispatch data from the dispatch center. In a vehicle dispatch management system composed of vehicles of
The vehicle is
Dispatch data receiving means for receiving the dispatch data;
Reception level detection means for detecting the reception level of the received radio wave received from the dispatch center;
Based on the reception level detected by the reception level detection means, a number setting means for setting the number of transmissions of the acceptance / rejection data;
The vehicle allocation management system, wherein the acceptance / rejection data is transmitted to the allocation center a predetermined number of times based on the frequency data set by the frequency setting means. In a vehicle dispatch management system comprising a dispatch center that transmits dispatch data for instructing dispatch via wireless communication means, and a plurality of vehicles that receive the dispatch data from the dispatch center,
The dispatch center is
Confirmation data transmitting means for transmitting confirmation data for confirming whether the vehicle dispatch center and the vehicle can normally communicate with each other in advance;
Response data detection means for detecting receipt of a response to the confirmation data from the vehicle;
The vehicle allocation management system comprising: allocation data transmission means for transmitting the allocation data only to a vehicle for which the response data can be detected by the response data detection means.