JP5227432B2 - AVM system - Google Patents

Description

  The present invention relates to an AVM (Automatic Vehicle Monitoring) system using mobile radio, and more particularly to a transmission method of vehicle allocation information transmitted from a center vehicle allocation device on a base station side to a mobile station vehicle.

  In recent years, a GPS (Global Positioning System) has established a technology for acquiring a mobile station position with high accuracy by using a GPS (Global Positioning System). In vehicles such as taxis and trucks, this position information is transmitted to the center dispatcher by mobile radio. As a result, the operator of the center dispatch device can grasp the current position of the vehicle, can easily contact the vehicle close to the dispatch position in response to a request for dispatch from the customer, and can improve work efficiency. ing.

The taxi AVM system is composed of a center vehicle allocation device, a base station radio, and a plurality of mobile stations (vehicles). Each mobile station (vehicle) includes a radio, a speaker microphone, an AVM system signal processor, an operation indicator, and the like. It consists of
By constantly transmitting and updating the mobile station position and vehicle status via mobile radio by polling from the center vehicle allocation device or by arbitrary call of the mobile station itself, the information is displayed on the map screen of the center vehicle allocation device, Operational efficiency has been improved by selecting a mobile station close to the customer and requesting a dispatch request received by the center dispatch device by the center operator by voice using a speaker microphone, or by giving a text transmission instruction to the operation display. Is.

  Among these, in the instruction method by the voice of the center operator, the mobile station (vehicle) is provided with an operation unit related to the AVM system such as “OK” and “Rent” and the received voice from the base station. A voice recording unit is provided to record the vehicle and automatically control the start, stop, and playback of the incoming call instructions by voice from the dispatch room in conjunction with AVM-related switch operations such as "OK" and "Rent" switches. A recording control system that improves the operability of the crew by performing the above is disclosed. (For example, see Patent Document 1)

  Also, in the text instruction method, customer storage means for storing customer information is provided in the base station side dispatch center, and when there is a request for dispatch from the customer, text data of the customer information is used as a dispatch instruction signal in the mobile station ( The mobile station displays information such as the customer's address, name, and directions on the AVM system's display means as text, and converts the text data into speech signals using speech synthesizer and voices the dispatch instruction signal. To tell the crew. By doing in this way, it is disclosed that the center operator can instruct a crew member to deliver a vehicle by both voice and text display without making a voice, and the vehicle can be dispatched efficiently. (For example, see Patent Document 2)

JP-A-10-334398 JP-A-9-282597

The instruction method by recording control in the conventional taxi AVM system has a problem that a voice recording unit and recording control means must be provided on the mobile station side, and the mobile station apparatus becomes large and expensive.
In addition, the voice and text instruction method by text transmission must be provided with a voice synthesizing means for converting text data into a voice signal on the mobile station side, and the mobile station apparatus becomes large and expensive. was there.
As described above, in the conventional apparatus, each mobile station (vehicle) must be provided with an expensive voice recording unit and voice synthesis means. If the number of mobile stations (vehicles) increases, the capital investment increases accordingly. It was.

  The present invention has been made to solve the above-described problems, and can obtain the same effects as those of the above-described invention without configuring recording control means and speech synthesis means on the mobile station side. An object of the present invention is to provide an AVM system capable of performing the above.

  The AVM system according to the present invention is the AVM system in which dispatch information is transmitted from the center dispatch apparatus to the vehicle in response to a dispatch request from a customer. The center dispatch apparatus encodes and compresses an operator's voice signal. A customer database file section for storing customer information as text data, a voice synthesis section for converting text data read from the customer database file section into a voice signal, and a voice signal converted by the voice synthesis section Second codec part to be encoded / compressed, voice data encoded / compressed by the first codec part, text data read from the customer database file part, and voice data encoded / compressed by the second codec part With vehicle number index information. A voice data file and a text data file, and a voice data file part for accumulating the voice data file generated by the control part. The control part includes a text data file and a voice data file part. The voice data file stored in the is transmitted to the vehicle side.

  According to this invention, the control unit of the center vehicle allocation device transmits both of the customer information stored in the customer database file unit to the vehicle side as a text data file and a voice data file obtained by converting the text data into voice. When there is no customer information, a voice data file based on the operator's voice signal is transmitted to the vehicle side. Further, the voice data file obtained by converting the text data into voice and the voice data file based on the voice signal of the operator have vehicle number index information. Since it is accumulated in the voice data file part in the added state, the crew member can control the control part of the center vehicle allocation device by the operation part on the vehicle side without providing the recording control means or the voice synthesis means on the vehicle side. Can repeatedly listen to the operator's voice data file, And brings the information display of the text data file received similarly to the associated it (operator does not emit sound) can be heard repeatedly audio data file of the text data effect.

It is a block diagram which shows the structure of the base station and center dispatch apparatus of the system by Embodiment 1 of this invention. It is a block diagram which shows the structure by the side of the vehicle of the system by Embodiment 1 of this invention. It is a figure which shows schematic structure of the display part and operation part by the side of the vehicle of the system by Embodiment 1 of this invention. It is a figure which shows the structure of the data format transmitted / received between the center vehicle allocation apparatus by Embodiment 1 of this invention, and a vehicle.

Embodiment 1 FIG.
Hereinafter, an AVM system according to Embodiment 1 of the present invention will be described with reference to FIGS. FIG. 1 is a block diagram showing a schematic configuration of a base station and a center vehicle allocation device in the AVM system of the present invention, FIG. 2 is a block diagram showing a schematic configuration on the vehicle side, and FIG. 3 is a schematic configuration of a display unit and an operation unit on the vehicle side. FIG. 4 and FIG. 4 are diagrams showing the configuration of a data format transmitted from the center vehicle allocation device to the vehicle side.

In FIG. 1, the fixed station side of the AVM system includes an SCPC (single carrier per channel) base station digital radio 1 that transmits and receives signals wirelessly to and from a plurality of vehicles 9 that are mobile stations, and a center that accepts requests for vehicle allocation from customers. It is comprised with the vehicle allocation apparatus 2. FIG. Connected to the center vehicle allocation device 2 is an operating terminal 3 such as a personal computer operated by a center operator, a voice input microphone 4, a voice output speaker 5, and a telephone switch 7 to which a receiving telephone 6 is connected. Has been.
The telephone exchange 7 is connected to a public line 8, and the SCPC base station digital radio 1 is connected to a base station antenna 11.

  Next, the internal configuration of the center vehicle allocation device 2 will be described. The control unit 21 controls all functions of the internal components of the center vehicle allocation device 2 and includes a CPU and a memory. The codec unit 22 picks up the voice uttered by the operator at the dispatch center by the voice input microphone 4, samples the voice signal, encodes and compresses it, creates voice data, and receives it from the vehicle 9 of the mobile station. The audio data file thus decoded is decoded and output as an audio signal from the audio output speaker 5.

The customer database (DB = Data Base) file unit 23 stores information such as customer addresses, names (names), telephone numbers, and directions (directions) as text data. When the control unit 21 searches using ND (Number Display) information notified via the key 7 as a key, customer data stored in the customer DB file unit 23 is output as text.
The voice synthesizer 24 converts the text data output from the customer DB file 23 into a voice signal. The codec unit 25 samples the audio signal output from the audio synthesis unit 24, encodes and compresses it, and generates audio data.

The control unit 21 adds the index information of the vehicle number to the voice data encoded / compressed by the codec unit 22, the text data read from the customer database file unit 23, and the voice data encoded / compressed by the codec unit 25, respectively. In addition, an audio data file and a text data file are generated. These voice data file and text data file will be described in detail with reference to FIG.
The index information of the vehicle number is an index code received in conjunction with a switch operation by an operation unit (described later) of the mobile station 9 or an index code assigned in conjunction with an operator's dispatch operation by the operation terminal 3. It is added in association with the corresponding voice data and text data.

The voice data file unit 26 stores only the voice data file among the voice data file and the text data file generated by the control unit 21. That is, in the voice data file unit 26, voice data generated by the operator output from the codec unit 22, and voice data obtained by converting the customer text data output from the codec unit 25 into voice, respectively, are index information of the vehicle number. What has been added to become an audio data file is stored.
A signal from the center vehicle allocation device 2 is transmitted to the mobile station (vehicle) 9 via the base station antenna 11 connected to the base station digital radio unit 1.

  Next, the internal configuration of the mobile station (vehicle) 9 will be described with reference to FIG. In FIG. 2, the mobile station (vehicle) 9 includes a mobile station radio 91, a speaker microphone 92 connected to the mobile station radio 91, and a mobile station operation display of the AVM system connected to the mobile station radio 91. And a taxi meter 96 provided in the vehicle. The mobile station (vehicle) 9 is composed of a plurality (several to several hundreds depending on the company scale).

The mobile station radio 91 samples the audio signal picked up by the speaker microphone 92 from the audio signal emitted by the driver who is the crew of the vehicle 9 and the SCPC mobile station digital radio unit 911 connected to the mobile station antenna 94, and codes And a control unit 913 that controls the SCPC mobile station digital radio unit 911 and the codec unit 912. The codec unit 912 decodes audio data received from the base station digital radio 1.
The mobile station operation display 93 includes a control unit 931 of the mobile station operation display 93, an operation unit 932 of the mobile station operation display 93, a display unit 933 of the mobile station operation display 93, and a mobile station operation display 93. The buzzer 934 and the GPS receiver 935 of the mobile station operation indicator 93 are configured.

The operation unit 932 and the display unit 933 of the mobile station operation indicator 93 are configured as shown in FIG. 3, for example, and the operation unit 932 includes a plurality of operation switches using push buttons such as “OK”, “RESPONSE”, and “PLAY”. have. The display unit 933 is a liquid crystal screen.
The “OK” operation switch is operated when the contents of the dispatch instruction from the center dispatch apparatus 2 are confirmed and the dispatch is accepted. The “response” operation switch is operated when confirming the ringing of the calling buzzer 934 by a call from the operator of the center vehicle allocation device 2 and responding with a notice that the local station is receiving a vehicle allocation instruction. It is. The “playback” operation switch is operated when the voice data file stored in the voice data file unit 26 of the center vehicle dispatch apparatus 2 is transmitted when it is necessary to repeatedly listen to the vehicle dispatch instruction voice.

A configuration of a data format transmitted from the control unit 21 of the center vehicle allocation device 2 to the vehicle 9 will be described with reference to FIG.
FIG. 4A shows an audio data file generated by converting text data read from the customer DB file unit 23 into audio data and adding vehicle number index information. FIG. 4B shows a text data file generated by adding vehicle number index information to text data read from the customer DB file unit 23. FIG. 4C shows a voice data file generated by converting operator voice into voice data and adding vehicle number index information.

Each voice data file and text data file are attached based on an index code received in response to a switch operation by the operation unit 932 of the mobile station 9 or an index code assigned by an operator dispatch operation by the operation terminal 3. The index part of the specific vehicle number, the identification code part for distinguishing whether the data in the file is voice or text, and the data part.
In addition, audio data obtained by sampling and encoding / compressing an audio signal obtained by picking up an audio signal emitted by a driver who is a crew member of the vehicle 9 by the speaker microphone 92 by the codec unit 912 is the same as that shown in FIG. It is transmitted from the mobile station vehicle 9 to the base station digital radio 1.

Next, the operation of the AVM system will be described. The center vehicle allocation apparatus 2 automatically sends a polling signal from the control unit 21 at regular intervals via the base station digital radio 1, the base station antenna 11, the mobile station antenna 94, and the mobile station radio 91. It transmits to the operation indicator 93.
The mobile station operation indicator 93 of the AVM system receives vehicle position information from the GPS receiver 935 at a fixed period, and holds the latest information in the control unit 931 of the mobile station operation indicator 93 of the AVM system. When the control unit 931 receives the polling signal, the control unit 931 receives the position information of the held vehicle via the mobile station radio 91, the mobile station antenna 94, the base station antenna 11, and the base station digital radio 1. 2 to the control unit 21.

When the polling signal is not received for a certain period of time, the control unit 931 of the mobile station operation indicator 93 moves the position of the mobile station (vehicle) 9 for a certain distance or operates the driver of the mobile station (vehicle) 9. When the operation unit 932 is operated or when the taximeter 96 is changed, the mobile station radio 91, the mobile station antenna 94, the base station, and the position information of the vehicle 9 and the vehicle state (empty / actual vehicle) information are obtained by an arbitrary call. The data is transmitted to the control unit 21 of the center vehicle allocation device 2 via the antenna 11 and the base station digital wireless device 1.
Thus, the control unit 21 queues the mobile station information, and outputs information to the operation terminal 3 so as to update and display the dynamics (position and state) of all the vehicles.

  The center vehicle allocation device 2 operates to select and distribute a mobile station close to the customer while polling all the vehicles 9 of the mobile station and updating vehicle information by an arbitrary call from the mobile station (vehicle) 9. ing. The display update speed is 3 to 5 seconds per 100 mobile stations (vehicles 9) for SCPC digital radio, realizing real-time characteristics that do not hinder vehicle allocation.

  First, the flow of dispatching when a customer database such as road guidance is in the center dispatching apparatus 2 will be described. Now, for example, when there is a car delivery request telephone from the customer on the public line 8 and the incoming telephone 6 receives the call, the telephone exchange 7 notifies the control unit 21 of the ND information, and the control unit 21 makes a call from the customer DB file unit 23. Text data such as the customer's address and route guidance is read and displayed on the operation terminal 3. At the same time, the operation terminal 3 displays a specific vehicle number in an unoccupied state where a vehicle can be instructed close to the customer to notify the center operator that the vehicle can be allocated.

The center operator off-hooks the reception telephone 6 and responds to the customer by telephone and accepts the dispatch. Subsequently, when the center operator performs an operation of instructing to dispatch a specific vehicle number from the operation terminal 3, the control unit 21 converts the specific vehicle number into the data format using the specific vehicle number as index information as shown in FIG. Create a file and queue it to prepare for transmission.
At the same time, the control unit 21 outputs the read text data to the speech synthesis unit 24. The voice synthesizer 24 converts the text data into a voice signal and outputs it to the codec unit 25. The codec unit 25 samples the audio signal, encodes / compresses it, and outputs it to the control unit 21. The control unit 21 generates an audio data file in a data format using the specific vehicle number as index information as shown in FIG.

The control unit 21 temporarily stores the generated text data file and audio data file, and accumulates the audio data file in the audio data file unit 26. The control unit 21 takes out the voice data file from the voice data file unit 26, and transmits the voice data file under the PTT (Press to talk) control from the base station digital wireless device 1 so as to be transmitted to the specific vehicle together with the text data file.

  The mobile station (vehicle) 9 receives a signal from the base station digital radio device 1 by the mobile station antenna 94 and inputs the signal to the control unit 913 of the mobile station radio device 91. The control unit 913 transmits the received signal file to the AVM operation display 93 if the identification code in FIG. 4 is “text”. This signal is transmitted to the display unit 933 by the control unit 931 of the AVM operation display 93, and text data such as the customer's address and route guidance is displayed on the display unit 933 as characters.

If the signal file received by the control unit 913 is “voice” as the identification code in FIG. The codec unit 912 can decode the signal to convert it into an audio signal, and sound the sound from the speaker in the speaker microphone 92.
Thus, the driver of the mobile station (vehicle) 9 confirms the contents of the dispatch by both the character display and the voice, and the “OK” switch shown in FIG. 3 in the operation unit 932 of the mobile station operation indicator 93 of the AVM system is displayed. To operate. The “OK” signal is sent to the control unit 21 of the center dispatch apparatus 2 via the mobile station radio 9, the mobile station antenna 94, the base station antenna 11 and the base station digital radio 1. 3 indicates that the mobile station (vehicle) 9 of the specific vehicle number instructed to dispatch has been accepted, and the operator can know it.

When the driver of the mobile station (vehicle) 9 of the specific vehicle number that has received the dispatch instruction needs to repeatedly listen to the dispatch instruction voice while traveling while on the way of receiving the vehicle, the operation unit of the mobile station operation indicator 93 of the AVM system 3 is operated by the mobile station radio 91, the mobile station antenna 94, the base station antenna 11, and the base station digital radio 1 to operate the control unit 21 of the center vehicle allocation device 2 by operating the “reproduction” switch shown in FIG. A retransmission request signal with a vehicle number assigned thereto is transmitted.
The control unit 21 that has received the retransmission request signal selects the audio data shown in FIG. 4A using the vehicle number as an index from the audio data file unit 26 and sends the audio data to the mobile station (vehicle) 9 that has requested retransmission. Send the data file. The mobile station (vehicle) 9 that has received this file can hear a voice instruction from the speaker of the speaker microphone 92 in the same procedure as described above.

When the specific mobile station (vehicle) 9 receiving the dispatch instruction puts the customer and the taxi meter 96 starts to rent, the rent signal transmitted in conjunction with the taxi meter 96 follows the same route as other signals. It is transmitted to the control unit 21 of the center vehicle allocation device 2. Since the voice data file of the vehicle number of the received rental signal is no longer necessary, the control unit 21 deletes the voice data file indexed by the specific vehicle number in the voice data file unit 26.
The “rental signal” transmitted from the vehicle is transmitted in conjunction with the taximeter 96. In addition, a “rental” operation switch is provided in the operation unit 932 and operated to operate the signal. You may make it transmit.

  Next, the flow of allocation when there is no customer database such as road guidance in the center allocation apparatus 2 will be described. Now, for example, there is a vehicle dispatch request telephone from the customer on the public line 8, and when the incoming telephone 6 is received, the telephone exchange 7 notifies the originating ND information to the control unit 21, but the originating ND information is not notified, When there is no text data such as the customer name, address, and route guidance in the customer DB file unit 23 for the originating ND information, the control unit 21 displays “not notified” or “no DB” on the operation terminal 3, etc. The center operator will know it.

  The center operator off-hooks the reception telephone device 6 to respond to the customer and confirm the customer position by voice call and accept the dispatch. Subsequently, the center operator selects a specific vehicle number close to the customer position from the operation terminal 3 on the map screen of the operation terminal 3, designates the specific vehicle number, performs a call operation, and sends a call signal to the control unit 21, base station The data is transmitted to the mobile station operation indicator 93 of the AVM system via the digital radio 1, the base antenna 11, the mobile station antenna 94, and the mobile station radio 91.

The call buzzer 934 of the mobile station operation indicator 93 of the AVM system rings upon receiving a call signal from the center vehicle allocation device 2. The driver of the mobile station (vehicle) 9 confirms the ringing of the calling buzzer 934, and is aware of the notice that the local station receives a dispatch instruction. The driver is in the operation unit 932 of the mobile station operation display 93 of the AVM system. The “response” switch shown in FIG. 3 is operated to transmit a response signal to which the vehicle number index information is added.
The response signal is received by the control unit 21 of the center dispatcher 2 via the mobile station radio 91, the mobile station antenna 94, the base station antenna 11, and the base station digital radio 1, and the control unit 21 calls the operation terminal 3. The response signal of the corresponding vehicle number is received and displayed.

When the center operator confirms this display on the operation terminal 3, the center operator sends a vehicle dispatch instruction by voice while pressing the switch of the voice input microphone 4. The audio signal is sampled, coded and compressed by the codec unit 22 to generate audio data, and is output to the control unit 21. The control unit 21 adds the index information of the specific vehicle number as shown in FIG. 4C to generate an audio data file and stores it in the audio data file unit 26.
The control unit 21 extracts the audio data file from the audio data file unit 26, and transmits the audio data file by performing PTT (Press to talk) control from the base station digital radio 1 so as to transmit it to the specific vehicle.

  The mobile station (vehicle) 9 receives the signal transmitted from the base station digital radio device 1 by the mobile station antenna 94, and if the control unit 913 of the mobile station radio device 91 has the identification code in FIG. Then, the data is transmitted to the codec unit 912 of the mobile radio device 91. The codec unit 912 can decode the signal to convert it into an audio signal, and sound the sound from the speaker in the speaker microphone 92.

  The driver of the mobile station (vehicle) 9 confirms the contents of the dispatch instruction by voice, and operates the “OK” switch shown in FIG. 3 in the operation unit 932 of the mobile station operation indicator 93 of the AVM system. The acknowledge signal is transmitted to the control unit 21 of the center dispatcher 2 via the mobile station radio 9, the mobile station antenna 94, the base station antenna 11, and the base station digital radio 1, and the control unit 21 sends it to the operation terminal 3. The fact that the mobile station of the specific vehicle number instructed to dispatch has been accepted is displayed, and the center operator can confirm it by looking at it.

When the driver of the mobile station (vehicle) 9 of the specific vehicle number that has received the dispatch instruction needs to repeatedly listen to the dispatch instruction voice while traveling in the middle of the arrival, the operation unit of the mobile station operation indicator 93 of the AVM system 3 is operated by the mobile station radio 91, the mobile station antenna 94, the base station antenna 11, and the base station digital radio 1 to operate the control unit 21 of the center vehicle allocation device 2 by operating the “reproduction” switch shown in FIG. A retransmission request signal with a vehicle number assigned thereto is transmitted.
The control unit 21 of the center dispatch apparatus 2 that has received the retransmission request signal selects the audio data file shown in FIG. 4C using the vehicle number as an index from the audio data file unit 26, and the mobile station that has made the retransmission request. The audio data file is transmitted to (vehicle) 9. The mobile station (vehicle) 9 that has received this file can hear a voice instruction from the speaker of the speaker microphone 92 in the same procedure as described above.

  As described above, according to the present invention, the “playback” switch can be used in the operation unit of the mobile station operation indicator of the AVM system without configuring the recording control means and the voice synthesis means on the mobile station (vehicle) 9 side. The center operator's voice instruction data file can be heard repeatedly in conjunction with the switch operation, etc., and the text data read out from the customer data file is received and displayed in the same manner. The center operator created on the basis of the above can repeatedly listen to the voice data file that does not utter the voice, thereby improving the work efficiency.

  In the first embodiment of the present invention, the case where the SCPC digital radio is used as the radio line is shown. However, the mobile phone line such as MCA (Multi Channel Access) digital radio, FOMA, or SCPC analog radio is used. Also good.

  The AVM system of the present invention is widely applied to taxi industry, delivery industry, transportation industry, business radio communication systems related to disaster prevention radio, and the like.

1: Base station digital radio, 2: Center dispatch device,
3: Operation terminal, 4: Microphone for voice input,
5: Speaker for audio output, 6: Telephone for reception,
7: Telephone exchange, 8: Public line,
9: Mobile station (vehicle), 11: Base station antenna,
21: Control unit, 22: Codec unit,
23: Customer database file part, 24: Speech synthesis part,
25: Codec part, 26: Audio data file part,
91: Mobile station radio, 92: Speaker microphone,
93: Mobile station operation indicator, 94: Mobile station antenna,
95: GPS receiver 96: Taximeter
911: SCPC mobile station digital radio unit, 912: codec unit,
913: Control unit of mobile station radio, 931: Control unit of mobile station operation indicator,
932: Operation unit of mobile station operation indicator, 933: Display unit of mobile station operation indicator,
934: Mobile station operation indicator buzzer 935: Mobile station operation indicator GPS receiver.

Claims (6)

  In the AVM system that transmits dispatch information from a center dispatch device to a vehicle in response to a request for dispatch from a customer, the center dispatch device includes a first codec unit that encodes and compresses an operator's voice signal, and the customer information A customer database file part for storing the data as text data, a voice synthesizer for converting the text data read from the customer database file part into a voice signal, and a first code for encoding and compressing the voice signal converted by the voice synthesizer. Audio data encoded and compressed by the first codec unit, text data read from the customer database file unit and audio data encoded and compressed by the second codec unit, Each vehicle number index information is added to the sound A control unit that generates a data file and a text data file; and an audio data file unit that stores an audio data file generated by the control unit, wherein the control unit includes the text data file and the audio data file unit. The AVM system is configured to transmit the audio data file stored in the vehicle to the vehicle side.   The vehicle decodes the audio data file transmitted from the center vehicle allocation device side, and displays and displays a text data file transmitted from the center vehicle allocation device side, and encodes and compresses the audio signals of the vehicle crew 2. A codec unit for performing the operation, a microphone speaker for informing a voice signal decoded by the codec unit by voice, and an operation unit for requesting transmission of a voice data file stored in a voice data file unit of the center vehicle allocation device. AVM system according to claim 1.   The AVM system according to claim 1, wherein the control unit of the center vehicle allocation device adds vehicle number index information to voice data and text data based on a vehicle allocation operation by an operator's operation terminal.   The vehicle has an operation unit, and the vehicle number of the own vehicle is transmitted to the center vehicle allocation device based on a switch operation of the operation unit, and the control unit of the center vehicle allocation device receives the vehicle number transmitted from the vehicle. The AVM system according to claim 1 or 2, wherein vehicle number index information is added to voice data and text data.   The control unit of the center vehicle allocation device, based on the switch operation of the operation unit provided in the vehicle, from the file stored in the audio data file unit of the center vehicle allocation device, the audio data file corresponding to the vehicle number of the vehicle The AVM system according to claim 1, wherein the AVM system is selected and transmitted to the vehicle.   The control unit of the center vehicle allocation device corresponds to the vehicle number of the vehicle from the file stored in the voice data file unit of the center vehicle allocation device based on reception of the “rental signal” transmitted from the vehicle. The AVM system according to any one of claims 1 to 4, wherein the audio data file is erased.

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