JPH08228166A - Response control method for mobile object identifying device - Google Patents

Abstract

PURPOSE: To provide the response control method of a mobile object identifying device capable of performing communication with an interrogator present in ground equipments even when plural mobile objects are present within a communication area and the mobile objects are in a congestion state or even when the mobile object is in a normal high-speed traveling state. CONSTITUTION: This method is provided with first interrogators 1A and 1B provided with the communication areas Z1A and Z1B wide in the advancing directions of the mobile objects 2A and 2B, second interrogators 71-7n provided with the limited communication areas Z71-Z7n, first responders 3A and 3B disposed in the mobile objects 2A and 2B and activated by the first interrogators 1A and 1B and second responders 8A and 8B activated by the second interrogators 71-7n. Then, both interrogators 1A and 1B and 71-7N transmit ID transmission invitation signals 10 for inviting the responders within the communication areas to respond and both responders 3A and 3B and 8A and 8B are distinguished from the responders of the other mobile objects, store the same ID codes 3a and 3b and return the ID codes 3a and 3b to the pertinent interrogators by ID transmission signals 4a and 4b at the time of receiving the ID transmission invitation signals 10 from the interrogators.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a system that enables a mobile body to settle a toll road toll charge without stopping at a toll road gate, and particularly to prevent communication errors during traffic jams. The present invention relates to a response control method for a moving body identification device.

[0002]

2. Description of the Related Art In the prior art toll payment processing system for a moving body passing through a toll road, a person is placed at a gate installed on the toll road and the person pays the toll or automatically pays by a toll ticket. There are ways to do that. However, in any of the methods, at the gate, the moving body must stop temporarily and perform the settlement process.

FIG. 5 is a layout diagram of an interrogator and a responder, which shows a method of performing a settlement process without temporarily stopping a moving body according to the prior art. In FIG. 5, for example, an interrogator 1A provided at a gate such as an entrance and exit of a highway and a responder 3A which is activated by the interrogator 1A and is mounted on a moving body 2A although a vehicle is shown in the illustrated example. By performing wireless communication between the device and the interrogator 1A and performing predetermined communication, for example, a highway use fee settlement process is performed. In such a system, in particular, when there are transponders 3A, 3B, ... Mounted on a plurality of mobile units 2A, 2B, ... Within the communication area of the interrogator 1A, in general, a plurality of transponders Since 3A, 3B, ... Simultaneously respond using the same frequency band, there is a problem that a plurality of signals are input to the receiver of the interrogator 1A and cause interference.

As a means for solving this interference problem,
It was disclosed in Japanese Patent Application No. 6-271636 "Mobile Object Identification System":
How to randomly select the frequency that the transponder responds,
A method of randomly selecting a response time according to the following references has been proposed. Hereinafter, as a conventional technique, a method of randomly selecting this response time (hereinafter, random TDMA (T
ime Division Multiple Access).

References: C. Wietfeld et al., "Perform
ance of Vehicle-Roadside Communication Systems Sup
porting Multiple RTI-Applications, "in Proc. of Ve
hicle Navigation & Information Systems Conference,
September 1994, Yokohama, Japan Fig. 6 shows an example of a communication timing chart of the random TDMA method. In this example, there are two responders in the communication area of interrogator 1A.
It is assumed that 3A and 3B exist. First, question interrogator 1A
Generates an ID transmission invitation signal 10 which invites the responders 3A and 3B in the communication area to transmit the ID codes 3a and 3b of the responders. The ID code is an ID code 3a, 3b ... which each responder 3A, 3B ... preferably holds uniquely, and the responder 3A (3B ...) is generated by this ID code 3a (3b ...).
Is a code for identifying. Now, at the time when the interrogator 1A sends the ID solicitation signal 10, the interrogator 1A determines how many transponders are present in its communication area, and its ID.
I don't have any information about what the code is. Therefore, the transponders 3A and 3B transmit the ID codes 3a and 3b of the transponders themselves by the ID transmission signals 4a and 4b. In the example shown,
The ID code 3a is transmitted in the time slot N by the ID transmission signal 4a, and the ID code 3b is transmitted in the time slot 2 by the ID transmission signal 4b. As a result, the interrogator 1A can recognize the ID codes 3a and 3b of the responders 3A and 3B existing in the communication area. However, as described above, if a plurality of transponders 3A, 3B ... wirelessly transmit their own ID codes 3a, 3b ... using the same frequency in the same time zone, the interrogator 1A receives Interference occurs in the machine and communication fails.

Therefore, in the random TDMA system, the interrogator 1A
After sending the ID solicitation signal 10, the responder in the communication area
In order to receive the ID transmission signals from 3A, 3B ..., the time zone in which the ID code can be received from one responder is set as one time slot, and the time zone corresponding to N time slots (# 1 to N) is secured. Responders 3A and 3B have N time slots.
Randomly select one (or multiple) time slots from (# 1 to N) and transmit its own ID code.

In the illustrated example shown in FIG. 6, the responder 3A selects the Nth time slot and transmits the ID transmission signal 4a, and the responder 3B selects the second time slot and transmits the ID transmission signal 4b.
In this way, if the time slots 2 and N selected by the responders 3A and 3B do not overlap, the ID transmission signals 4a and 4b do not collide, and the interrogator 1A uses the ID codes from the plurality of responders 3A, 3B…. 3
You can know a, 3b .... Interrogator 1A once becomes responder 3
If the interrogator 1A can know the ID codes 3a, 3b ... of A, 3B ... Then, the interrogator 1A sends the information message 2b including the ID code 3b for calling the communication partner responder 3B, and the responder 3B of the communication partner. Is specified. Although the response information message 5b from the responder 3B is illustrated in the illustrated example, necessary communication is performed between the interrogator 1A and the responder 3B during this period (the period of the information messages 2b and 5b). Similarly, during the period of the information messages 2a and 5a, communication is performed between the interrogator 1A and the responder 3A, and communication can be performed while avoiding unnecessary interference. Such a communication method is disclosed in Japanese Patent Publication No. 5-11812 "Communication method between a parent station and a plurality of child stations", and this communication method will be referred to as an ID code designated communication here.

On the other hand, if a plurality of transponders select the same time slot and send back an ID transmission signal, interference occurs in that time slot, and the interrogator 1A becomes the partner transponder.
ID code 3a, 3b ... of 3A, 3B ... cannot be read normally. This situation is called collision of ID code responses. When the ID code responses collide, the interrogator 1A repeats retries until the communication with the partner transponders 3A, 3B ... Can be normally completed without the collision.

[0009]

As described above, in the conventional gate system, it is necessary to make a temporary stop at the gate at the time of paying the fare, which is one of the causes of the congestion. The system to which the present invention is directed is a system capable of performing a settlement process of a toll charge on a toll road without a moving body stopping at a toll road gate, and particularly prevents a communication error during a traffic jam. It is a response control method for a mobile body identification device whose main purpose is to do. Since this system communicates wirelessly, when there are multiple transponders in the same communication area in response to an inquiry from one interrogator, multiple transponders respond simultaneously, causing interference, resulting in a communication error. Occurs. Therefore, there is a problem that the system does not operate normally when a traffic jam of a moving body occurs near the gate for some reason.

Further, even in a normal running state, in order to prevent the same interference as that caused by a traffic jam due to the presence of a plurality of transponders in the same communication area due to the parallel movement of mobile bodies, the conventional method described in the preceding paragraph is used. The method using the time division communication (random TDMA communication) method described as the technology of the above, frequency division communication that prevents interference by using different frequencies, or space division communication that prevents interference by spatially separating, and further wideband spreading. It is conceivable to use a multiplex communication system such as code division communication that separates and extracts a desired signal from a plurality of communication waves that exist at the same time by using a code technique. However, these methods have a problem in that they are difficult to use when a moving body is congested, because the number of users that can communicate at one time is limited and the system becomes complicated.

Further, when the wireless communication fails, in the toll road toll charge processing system as an application example of the present invention, after checking the license plate of the moving body by the image processing apparatus installed side by side. Although the settlement process is performed, there is also a problem that the license plate cannot be confirmed due to the moving bodies in front and behind in the case of traffic congestion. The present invention has been made in view of the above points, and the object thereof is to solve the above-mentioned problems, and there are a plurality of moving bodies in a communication area, even if the moving bodies are in a traffic jam state, An object of the present invention is to provide a response control method for a mobile body identification device capable of communicating with an interrogator provided in ground equipment even when the mobile body is in a normal high-speed traveling state.

[0012]

In order to achieve the above object, in the present invention, a first communication area, which is provided in a gate of a ground facility and communicates wirelessly with a mobile body and is wide in the traveling direction of the mobile body, is provided. A first interrogator having, a memory unit that is provided in a mobile unit and stores predetermined information including an ID code, a data processing unit that performs data processing, and a first interrogator that activates the first interrogator and data. A response control method for a mobile body identification device, comprising: a first transponder for transmitting and receiving; a second interrogator provided near a gate and having a limited second communication area; A second transponder activated by the second interrogator and transmitting and receiving data to and from the second interrogator, wherein the first interrogator and the second interrogator establish communication with the transponder in the communication area. Therefore, a response is recommended to the responder. Means for transmitting an ID transmission invitation signal, the first transponder and the second transponder distinguishing from the transponders of other mobile units, storing the same ID code, and an ID transmission solicitation signal from the interrogator. And a means for returning this ID code to the interrogator as an ID transmission signal.

In the second interrogator, a plurality of second interrogators are buried in the road near the gate, and the second communication area from one second interrogator is the vehicle width or the vehicle length of the moving body. The area is narrower and the communicable area is arranged in a mesh. Also, the second interrogator can be installed on the roadside near the gate. Further, the ground facility is provided with an image processing device and a control device, and the image processing device monitors the traffic volume of a moving body passing through the gate, and the control device uses the traffic volume to determine whether the first interrogator or the first interrogator. It is assumed that which one of the two interrogators is to be used for making an inquiry is determined and the first interrogator or the second interrogator is switched.

Further, the plurality of second interrogators buried in the road near the gate perform data transmission individually with the control device of the ground facility.

[0015]

With the above structure, the first responder or the second responder of the moving body which has entered the communication area when the moving body approaches the gate simultaneously asks the first interrogator and the second interrogator. Alternatively, in response to an inquiry from the interrogator of either the first interrogator or the second interrogator, the responder of either the first responder or the second responder that has received the inquiry first is The same ID code that is assigned to and shared by both responders is returned as an ID transmission signal as a reply to the ID transmission invitation signal from the interrogator. As a result, the control device that controls the first interrogator and the second interrogator can identify the ID code of the mobile unit that has entered the communicable area.

In particular, when the moving body approaches the gate at high speed and enters the communicable area, communication is first established between the first interrogator and the first responder, and the ID code response is sent. When the collision occurs, the communication is established between the first interrogator and the first responder while repeating the retries. Further, when the mobile body is in a traffic jam in the vicinity of the gate, communication is established between the second interrogator and the second responder. In particular, a plurality of second interrogators are buried in the road near the gate, and the second communication area from one second interrogator is an area narrower than the vehicle width or vehicle length of the moving body. By arranging a plurality of cells in a mesh, the second transponders of the individual mobile units are in a state capable of one-to-one communication with any one of the second interrogators. In this way, the control device can identify the ID code of the corresponding moving body that has entered the second communication area and perform the ID code designation communication.

Particularly, the second response of the individual mobile unit is transmitted by transmitting data by individual wiring between the plurality of embedded second interrogators and the control device of the ground facility, or by providing the second interrogator with a memory function. Even if the communication with the device is performed at the same time, even if the ID code of the corresponding mobile body as a result of the communication is stored in the temporary memory function and then transmitted to the control device by the bus, the control device is in a congestion state. You can identify the ID code of your mobile.

When the moving body is congested around the gate, the number of lanes through which the moving body passes is limited, and when the second interrogator is installed on the roadside for each lane, the second question One-to-one between the reactor and the second responder of the individual moving body
Can communicate with each other. Further, the image recognition device monitors the traffic volume of the moving body passing through the gate, and by this traffic volume,
The control device determines whether the interrogator is the first interrogator or the second interrogator, and switches the first interrogator or the second interrogator to simplify the control contents of the control device. Moreover, it is possible to make only one of the first responder and the second responder of the transponder mounted on the mobile body into an operating state, and it becomes possible to save the power consumption of the transponder, It is possible to reduce consumption of battery capacity.

[0019]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is an explanatory view for explaining a response control method of a moving body identifying apparatus according to the present invention, FIG. Is an explanatory view of the arrangement of the interrogator and the transponder of the first embodiment as seen from above, and FIG. 4 is an explanatory view for explaining the response control method of another embodiment, which corresponds to FIGS. 5 and 6. The functional members have the same reference numerals.

As a first embodiment of the response control method of the moving body identifying apparatus according to the present invention, an example of applying the response control method of an interrogator and a plurality of responders to an automatic toll collection system on a toll road is shown in FIG. explain. 1, toll road 11
In the automatic toll collection system, the first interrogator 1A, 1B is installed on the roadside gate 12 for collecting tolls, and the first responders 3A, 3B are mounted on the moving bodies 2A, 2B shown in the figure as vehicles. Is
Move the communication area Z1A, Z1B of the first interrogator 1A, 1B to the mobile unit 2A, 2B.
When is passed, establish communication and communicate. In this system, for example, the amount of money previously paid by the user is stored in the memory unit of the first responder 3A, 3B, and the first responder 3A
When the moving body 2A (2B, ...) equipped with (3B, ...) Passes the communication area Z1A (Z1B) of the first interrogator 1A (1B) shown by the elliptical dotted line installed on the road side, Assume a prepaid service in which the user stored in the memory unit of the first responder 3A, 3B is deducted from the amount paid in advance according to the usage situation of the toll road. Here, for simplification, the toll road fare system shall be a uniform fare system for all lines, and the fare will change only depending on the vehicle type. The vehicle type information is stored in the first responder 3A (3B, ...).

The basic processing of this system is the first interrogator.
1A receives the ID code 3a, (3b, ...) of the first responder 3A (3B, ...) and the vehicle type information, calculates the charge based on that, and then
The responder 3A (3B, ...) specifies the ID code 3a (3b, ...) and sends the usage fee. The first responder 3A (3B, ...) sends the usage charge based on this transmitted data. This is a process of subtracting the usage fee from the prepaid amount stored in the memory unit of the 1-responder 3A (3B, ...).

Next, a response control method for the second interrogator and the second responder according to the first embodiment of the present invention will be described with reference to FIGS. In Figure 2, the ground facilities are gate 12
Wirelessly to communicate with the mobile unit 2A (2B ...),
The first interrogator 1A having a wide first communication area Z1A with respect to the traveling direction of (...) is provided. In the illustrated example, only one is shown near the gate 12 for simplification, but a plurality of second interrogators 7 (71, 72 ... To be buried in toll road 11. 1
Second communication area (Z71, Z72 ..., Z7) from two second interrogators 7
n) is a limited communication area narrower than the vehicle width or vehicle length of the moving body 2A (2B ...), and as shown in the plan view of FIG. 3, the second communication area (Z71, Z72 ..., Z7n ) Are arranged on the toll road 11 in a mesh pattern, and the moving body 2A (2
B ...) passes over at least one of the second communication areas (Z71, Z72 ..., Z7n) and communicates with this second communication area (eg, 71). Further, the control device 9 includes
The first interrogators 1A and 1B and the second interrogator 7 are connected to control the data transmitted and received from both interrogators.

The moving body 2A (2B ...) Has the ID code 3a (3b ...)
A memory unit (not shown) that stores predetermined information including a data processing unit, a data processing unit that performs data processing, and the first interrogator.
A first responder 3A (3B ...) Activated by 1A and transmitting / receiving data to / from the first interrogator 1A, and a second responder activated by the second interrogator 7 and transmitting / receiving data to / from the second interrogator 7.
8A (8B ...), and is comprised.

As shown in FIG. 3, the first interrogators 1A and 1B and the second interrogator 7 are arranged in the first communication area Z1A,
Z1B and corresponding transponders in the second communication area Z71, Z72, ... Z7n (in the illustrated example, the first transponder 3A and the second transponder of the mobile unit 2A)
8A), (First responder 3B of mobile unit 2B, second responder 8B) Sends ID transmission invitation signal 10 that invites a response to corresponding responders 3A, 8A, 3B, 8B in order to establish communication with Means for doing so.

The first transponders 3A (3B ...) And the second transponders 8A (8B ...) are means for storing the same ID code 3a (3b ...) in distinction from the transponders of other moving bodies. From the interrogator
When the ID transmission invitation signal 10 is received, this ID code 3a (3b
...) to the interrogator as an ID transmission signal 4a (4b ...). In such a configuration, the moving body 2A (2B
…) Approached Gate 12, and communication areas Z1A, Z1B, Z71,
The first responders 3A, 3 of the mobile units 2A, 2B that have entered the Z72, ... Z7n
B or the second responder 8A, 8B asks simultaneously from the first interrogator 1A, 1B and the second interrogator 7, or the interrogator of either the first interrogator 1A, 1B or the second interrogator 7. The first responder 3 that received the inquiry first in response to the inquiry from
The responder of either A, 3B or the second responder 8A, 8B is assigned to this mobile unit 2A (2B ...) and the same ID code 3a (3b ...) shared by both responders is sent from the interrogator. In response to the ID transmission invitation signal 10, the ID transmission signal 4a (4b ...) Is returned. As a result, the control device 9 for controlling the first interrogator 1A, 1B and the second interrogator 7 has the communicable area Z1A, Z1B, Z71, Z72, ... Z7.
ID code 3a (3b ...) of mobile unit 2A (2B ...) entering n
Can be identified.

FIG. 4 illustrates another embodiment.
1 and FIG. 3 which is a top view of FIG. 1 are different from FIG.
4 is configured by burying the second interrogator 7 in the toll road 11, the configuration of FIG. 4 is such that the second interrogator 7X (7Y ...) is installed on the roadside near the gate 12, and , Mobile 2A (2B…)
The second transponder (not shown) mounted on the
It is arranged at a position facing the interrogator 7X (7Y ...). With this configuration, it is not necessary to embed the second interrogator 7 in the toll road 11, and the construction such as waterproofing is easy. However, if there are multiple mobile units traveling in the same lane and the mobile units overlap, the second interrogator 7X (7
Y ...) may interfere with communication. For this reason,
In the present embodiment, it is preferable that the moving bodies traveling in the same lane are regulated so as to form one line, and the second interrogators 7X (7Y ...) Are arranged for each lane.

Next, as a first embodiment, a system will be described in which a mobile body to which the present invention is applied does not stop at a gate of a toll road and performs settlement processing of a toll road toll. In FIG. 1, the first interrogator 1A, 1B provided at the gate 12 of the toll road 11 enters the toll road 11 to the first responder 3A, 3B of the moving body 2A, 2B traveling on the toll road 11. Entrance information,
Halfway route information, ID code 3a (3b…) of mobile units 2A and 2B
A data read command or a data write command including an ID transmission solicitation signal 10 for soliciting the transmission is transmitted for each generation point of information, for example, by a microwave. First responder 3A, 3
B is for performing normal communication when the mobile units 2A and 2B are traveling at a normal high speed, for example, on the dashboard in the vehicle of the mobile units 2A and 2B, or in the rearview mirror. Install it in a place that is easily visible from the outside, such as behind the. The first responders 3A and 3B are composed of a high-frequency circuit for transmitting and receiving the microwaves and a control unit for controlling reading and writing of data, and a command from the first interrogators 1A and 1B (ID transmission invitation signal). 10. Send and receive data in accordance with ID code specified communication 2a (2b ...)).

If communication fails between the first interrogator 1A, 1B and the first responder 3A, 3B for some reason, the image processing device 6 installed on the roadside causes the mobile unit to move. It is configured to identify the 2A and 2B license plates and settle them later. If there is a traffic jam near Gate 12, the first interrogator
In the 1st communication area Z1A, Z1B inquired from 1A, 1B,
A plurality of first transponders 3A (3B ...) Will enter, causing interference and causing a communication error. Furthermore, due to traffic congestion, the distance between the front and rear moving bodies becomes narrow, making it impossible to check the license plate.

Therefore, as shown in FIG. 2, a second transponder 8A is attached under the moving body and is arranged so as to face the second interrogator 7 buried in the toll road 11. When the traffic is congested, the second responder 8A is installed. It is configured to communicate via the device 8A. In this method, first, the second interrogator 7 corresponding to the second responder 8A is buried in the toll road 11. At this time, as shown in FIG. 3, the second interrogator 7 is arranged in a mesh shape so that no gaps occur in the communicable areas Z71 to Z7n with the moving body 2A (2B ...). The size of one second communication area (for example, Z71) of the second interrogator 7 is limited so as to have a diameter not larger than the vehicle width or the vehicle length of the moving body. Since it is usually difficult to limit the second communication area using radio waves, for example, in communication between the second interrogator 7 and the second responder 8A (8B ...), communication is performed by a communication method based on electromagnetic induction. To do.

The first responders 3A and 3B and the second responder 8A (8
B ...) can be switched to the first interrogator 1A, 1B or the second interrogator.
Priority is given to the reply from the responder that received the inquiry from the interrogator 7 (71 to 7n) first. In addition, as another means for switching between the first responder 3A, 3B and the second responder 8A (8B ...), the inquiry from the first interrogator 1A, 1B or the second interrogator 7 is controlled to make an inquiry. There is a way to switch. This is to judge the traffic volume or the traveling speed of the moving body based on the image data from the image processing device 6. If the traffic volume is low or the traveling speed of the moving body is fast, the first interrogator 1A, 1B asks. If the traffic volume is heavy or the traveling speed of the moving body is slow, the second interrogator 7 (71 to 7n) is used to make an inquiry.

The first interrogator 1A, 1B or the second interrogator 7 to the first responder 3A, 3B or the second responder 8A (8B
..) is issued from the control device 9 positioned above both interrogators. Furthermore, the first interrogator 1A, 1B or the second interrogator 7 is the first responder 3A, 3B or the second responder 8A.
(8B ...) and the obtained data is
Via, it can be connected to the online system of the financial institution at a higher level, and the payment of the fee can be automatically settled.

[0032]

As described above, according to the configuration of the present invention, the first interrogator and the second interrogator are formed in the ground facility, and the first responder used at least during the normal traveling is provided in the moving body. The second interrogator and the second interrogator, which are used during traffic congestion, are configured, and the second interrogator and the second transponder can prevent interference even in the event of traffic congestion, so that charges can be collected smoothly. be able to. Further, even when the mobile body collects and collects charges at the gate of the toll road, the mobile body does not need to stop once, so that the traffic congestion can be eliminated, and it is effective in saving fuel costs and solving problems such as pollution.

[Brief description of drawings]

FIG. 1 is an explanatory diagram illustrating a response control method according to a first embodiment of the present invention.

FIG. 2 is an explanatory view of the arrangement of the interrogator and the responder of the first embodiment as seen from the side.

FIG. 3 is an explanatory view of the arrangement of the interrogator and the responder of the first embodiment as seen from above.

FIG. 4 is an explanatory diagram illustrating a response control method according to another embodiment.

FIG. 5 is a layout diagram of an interrogator and a responder according to a conventional technique.

FIG. 6 is a communication timing chart of a response control method according to the related art.

[Explanation of symbols]

 1A, 1B 1st interrogator 10 ID solicitation signal 11 Toll road 12 Gate 2A, 2B Mobile unit 3A, 3B 1st responder 3a, 3b ID code 4a, 4b ID transmission signal 6 Image processing device 7 (71,72, … 7n) 2nd interrogator 8A, 8B 2nd responder 9 Controller Z1A, Z1B 1st communication area Z71, Z72… Z7n) 2nd communication area

Claims (5)

[Claims] 1. A first interrogator, which is provided at a gate of a ground facility and wirelessly communicates with a mobile body and has a first communication area that is wide in a traveling direction of the mobile body, and is provided in the mobile body and includes an ID code. A memory unit that stores predetermined information, a data processing unit that performs data processing, a first responder that is activated by the first interrogator, and that transmits and receives data to and from the first interrogator,
In a response control method for a mobile body identification device, comprising: a second interrogator provided near a gate and having a limited second communication area; and a second interrogator provided on the mobile body and activated by the second interrogator,
A second transponder for transmitting and receiving data to and from the second interrogator, wherein the first interrogator and the second interrogator respond to the transponder to establish communication with the transponder in the communication area. The first responder and the second responder have means for storing the same ID code to distinguish from the responders of other mobile units, and an ID from the interrogator.
Means for returning this ID code to the interrogator as an ID transmission signal when receiving the solicitation signal, the first responder of the mobile body approaching the gate and entering the communication area. Alternatively, the second responder responds to the inquiry from the interrogator by either the first responder or the second responder that received the inquiry first. Response control method. 2. The response control method for a mobile body identification device according to claim 1, wherein the second interrogator has a plurality of second interrogators embedded in a road near the gate, and one second interrogator is used. The second communication area is a narrower area than the vehicle width or the vehicle length of the mobile body, and the communicable areas are arranged in a mesh pattern. 3. The response control method for a moving body identifying apparatus according to claim 1, wherein the second interrogator is installed on a roadside near the gate. 4. The response control method for a mobile body identification device according to claim 1, wherein the ground facility comprises an image processing device and a control device, and the image processing device comprises: The traffic volume of the moving body passing through the gate is monitored, and the control device judges whether the interrogator is the interrogator, the first interrogator or the second interrogator, based on the traffic volume,
A response control method for a mobile body identification device, comprising switching between a first interrogator and a second interrogator. 5. The response control method for a mobile body identification device according to claim 2 or 4, wherein the plurality of second interrogators embedded in the road near the gate are individually data-controlled with the control device of the ground facility. A response control method for a mobile body identification device, characterized in that transmission is performed.