JP3568976B2 - Information communication system - Google Patents

Description

[0001]
[Industrial applications]
The present invention relates to an information communication system that wirelessly communicates information with a wireless card or the like carried by a vehicle such as a vehicle on a toll road, for example.
[0002]
[Prior art]
In recent years, for example, in a toll collection system on a toll road, various attempts have been made to exchange traffic data and collect tolls without contact with a staff member, and some have entered an operational test like a telepath in Italy. On the other hand, in Japan, the operating conditions are severe due to the road conditions and the like, and it is still in the testing stage.
[0003]
There are two types of fare collection: a uniform section fare system and a distance fare system. Here, a more complicated distance fare system will be described. In general, a toll vehicle at a toll gate at the entrance of a toll road receives a passing vehicle that indicates entrance IC (interchange) data, which is referred to as a toll ticket. The toll is calculated and tolls are collected.
[0004]
In the contactless toll collection system, the exchange of this toll data is performed wirelessly, for example, by wireless communication with the toll booth at the entrance and exit using a wireless card, and cash settlement is debited, or in the same way as prepaid. In advance, data (such as data on the usage limit) is input to the card, and the data is withdrawn.
[0005]
FIG. 7 shows a basic configuration of a wireless fee collection system. The wireless card 81 in the vehicle 82 determines a fee collection method such as account withdrawal at the time of use contract. When the vehicle passes through the wireless communication zone of the entrance tollgate 83 in FIG. 7A, the wireless card 81 in the vehicle 82 performs wireless communication in the wireless communication zone of the entrance tollgate 83 and stores the entrance IC data. When passing through the wireless communication zone of the exit tollgate 84 in FIG. 7B, the wireless card 81 in the vehicle 82 transmits the entrance IC data to the toll collection device 86 installed at the exit tollgate 84. The toll collection unit 86 calculates a toll from the received entrance IC data, transmits the toll to the wireless card 81 and stores the toll, and also transmits debit procedure information to a center (not shown). On the center side, the procedure for debiting the account is performed online or in a center batch process.
[0006]
Such a toll collection system has become a problem in Japan in a congested vehicle at a tollgate, particularly in an environment where the distance between the front and rear vehicles is very close (clogged), for example, as shown in FIG. As described above, the wireless communication zone from the antenna 86 is wide, and a signal is also given to the wireless card 81 held by the vehicle 87 and the wireless card 81 held by the succeeding vehicle 88, and the possibility of erroneous communication such as out-of-sequence is increased. Is to occur.
[0007]
As described above, conventionally, there is no technology for performing wireless communication while determining a vehicle that is performing wireless communication in a zone or the like. In the worst case, there is a concern that a vehicle may be misplaced between front and rear vehicles, interference, and erroneous communication over an adjacent lane. is there.
[0008]
[Problems to be solved by the invention]
As described above, there is no narrow directivity technology for determining the communication zone with the vehicle that is communicating wirelessly, and stable wireless communication such as misplacement of vehicles before and after, interference, and erroneous communication over adjacent lanes. There is a problem that can not be performed.
Accordingly, an object of the present invention is to provide an information communication system capable of performing stable wireless communication with narrow directivity.
[0009]
[Means for Solving the Problems]
An information communication system according to the present invention includes a first transmission unit for transmitting a first identification signal, a second transmission unit for transmitting a second identification signal, the second transmission unit, and the first transmission unit. A control means for performing a control to perform transmission in a time-division manner and alternately with the means, and a first identification signal from the first transmission means and a second identification means which are alternately transmitted by the control means. Receiving means for receiving the first identification signal and the second identification signal, generating means for generating identification information from the first identification signal and the second identification signal received by the receiving means, and It comprises a matching means for matching the identification information with predetermined identification information, and a responding means for responding if the result of matching by the matching means matches.
[0010]
The information communication system of the present invention transmits a plurality of different identification signals, a plurality of transmitting means provided for each different identification signal, a receiving means for receiving different identification signals transmitted from the plurality of transmitting means, Generating means for generating identification information from different identification signals received by the receiving means, collating means for collating the identification information generated by the producing means with predetermined identification information, and collating by the collating means As a result, a response means is provided for responding when they match.
[0011]
The information communication system of the present invention transmits different identification signals, a plurality of transmission means provided for each of the different identification signals, and only one transmission means performs time division of transmission from the plurality of transmission means. Control means for controlling to be in a state, receiving means for receiving different identification signals transmitted from a plurality of transmission means by the control means, and generation for generating identification information from the different identification signals received by the reception means Means, matching means for matching the identification information generated by the generating means with predetermined identification information, and responding means for responding if the result of the matching by the matching means matches. .
[0012]
An information communication system according to the present invention is provided with a plurality of lanes, transmitting means for transmitting different combination signals for generating predetermined identification information for each lane, and a combination signal transmitted by the transmission means. Receiving means for receiving the received information, generating means for generating identification information from the combination signal received by the receiving means, collating means for comparing the identification information generated by the generating means with the predetermined identification information, And a responding means for responding if the result of the collation is a match.
[0013]
[Action]
According to the present invention, a first identification signal is transmitted by a first transmission unit, a second identification signal is transmitted by a second transmission unit, and transmission between the second transmission unit and the first transmission unit is performed. Are transmitted in a time-division manner and alternately transmitted, and a first identification signal from the first transmission unit and a second identification signal from the second transmission unit, which are alternately transmitted, are received, Generating identification information from the received first identification signal and the second identification signal, collating the generated identification information with predetermined identification information, and responding when the collation results in a match. It is like that.
[0014]
According to the present invention, different identification signals are transmitted, and transmission from a plurality of transmission means provided for each different identification signal is time-division-controlled so that only one transmission means is in a transmission state. Receiving different identification signals transmitted from the means, generating identification information from the received different identification signals, collating the generated identification information with predetermined identification information, and collating as a result. Is to respond to.
[0015]
【Example】
Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 shows a schematic configuration of a wireless toll collection system on a toll road as an information communication system of the present invention. That is, this wireless toll collection system is provided at a tollgate on a toll road, and a toll collection device 1 that collects tolls, a communication control device 2 that controls transmission and reception communications, and a transmission from the communication control device 2. , An antenna 3 used for reception, a transmission device 4 installed in connection with the communication control device 2, an antenna 5 used for transmission from the transmission device 4, a radio card (or similar) held by a vehicle entering a toll road. And a portable information storage medium 6 as a wireless device.
[0016]
The communication control device 2 includes a control unit 21 that controls the entire control, a modulation unit 22 that modulates data from the control unit 21, a transmission unit 23 that transmits a data modulation signal from the modulation unit 22, and a wireless card via the antenna 3. 6 includes a receiving unit 25 that receives the data modulated signal from the receiving unit 6, a demodulating unit 24 that demodulates the data modulated signal received by the receiving unit 25, and a clock unit 26.
[0017]
The transmission device 4 is connected to the control unit 21 of the communication control device 2 and includes a modulation unit 41 that modulates data from the control unit 21 and a transmission unit 42 that transmits a data modulation signal from the modulation unit 41. .
The wireless card 6 includes a control unit 62 that controls the entire system, an antenna unit 62 that receives and transmits a data modulation signal, a demodulation unit 64 that demodulates a data modulation signal received by the antenna unit 62, and data from the control unit 62. It comprises a modulating unit 63 for modulating, a storage unit 65 connected to the control unit 62 for storing data such as toll collection, a power supply 66, and a timer unit 67.
[0018]
FIG. 2 shows a configuration example of a wireless communication zone using antennas 3 and 5 having different directivities and directions. The antenna 3 is arranged at the upper right side of the passing road, and the antenna 5 is arranged at the upper center of the passing road. Thus, the wireless communication zone of the antennas 3 and 5 can be crossed to form a wireless communication zone (shaded area in FIG. 2) that is sharper (narrower directivity) than when a single antenna is used. Here, the antenna 5 has a purpose of narrowing the wireless communication zone, and the antenna 3 has a slightly wider directivity than the antenna 5 for the purpose of improving reception stability.
[0019]
In such a configuration, a communication operation of toll collection data using two antennas will be described with reference to FIG.
First, until the wireless card 6 enters the wireless communication zone, the control unit 21 outputs the activation code A1 from the antenna 3 and the activation code A2 from the antenna 5 alternately in a time-sharing manner using the timer unit 26. . After transmitting via the antennas 3 and 5, the control unit 21 waits for a reply from the wireless card 6 for a certain period of time using the timer unit 26, and repeats again if there is no response.
[0020]
In the wireless card 6, the control unit 61 is set in advance so as to receive the reception processing start condition in the order of the activation code A1 and then the activation code A2 by using the timer unit 67 within a predetermined time. The wireless card 6 responds in a portion where the two directivities of the antenna 3 and the antenna 5 overlap because of the setting as described above.
When a response is returned from the wireless card 6, the control unit 21 starts data processing.
[0021]
Further, the wireless card 6 stores the individual ID identification data in the storage unit 65, and thereafter, the wireless card 6 can perform communication in which the wireless card 6 is individually separated based on the ID identification data. That is, if the first ID identification data can be communicated in a stable and limited area, thereafter, by using this ID identification data, stable communication can be performed in the wireless communication zone with the wide directivity of the antenna 3.
[0022]
Since the signals of the antennas 3 and 5 are used as shown in FIG. 3, there is an advantage that if the signals are output from the antennas 3 and 5 at the same frequency, only one receiving circuit on the wireless card 6 side is required.
FIG. 4 shows the configuration of individual separation of wireless cards in the case of a plurality of lanes at an entrance and an exit tollgate.
[0023]
Assuming that there are three lanes A, B, and C, the activation code A1 is output from the antenna A1 of the A lane, the activation code A2 is output from the antenna A2, the activation code B1 is output from the antenna B1 of the B lane, and the activation code is output from the antenna B2. The activation code B2 is output, the activation code C1 is output from the antenna C1 of the C lane, and the activation code C2 is output from the antenna C2.
[0024]
A preset code is stored in the storage unit 65 of the wireless card 6, and the control unit 61 stores the code generated from the two activation codes received when passing through the wireless communication zone and the storage unit 65. A response is made when the stored code is the same. It is shown below.
[0025]
Setting code = F (A1, A2) = F (B1, B2) = F (C1, C2)
Note that F () is a function defined in advance. In this way, the codes preset in the storage unit 65 of the wireless card 6 match, and when combining different zones, the codes do not match, and the wireless card 6 does not respond. For example, the codes do not match in F (A1, B2).
[0026]
An activation code A1 is output from the antenna A1 in the A lane, and an activation code A2 is output from the antenna A2. The activation code A1 and A2 are generated when the activation codes A1 and A2 are received from the wireless card 6 held by the vehicle 7 entering the A lane. Since the codes match, the predetermined ID identification data RA is responded and the process is started.
An activation code B1 is output from the antenna B1 in the B lane, and an activation code B2 is output from the antenna B2. The activation code B1 and B2 are generated when the activation codes B1 and B2 are received from the wireless card 6 held by the vehicle 7 entering the B lane. Since the codes match, the predetermined ID identification data RB is responded, and the process is started.
[0027]
The activation code C1 is output from the antenna C1 of the C lane, and the activation code C2 is output from the antenna C2. The activation code C1 and C2 are generated when the activation codes C1 and C2 are received from the wireless card 6 held by the vehicle 7 entering the C lane. Since the codes match, predetermined ID identification data RC is responded, and the process is started.
[0028]
By changing the activation code from each antenna for each of adjacent lanes of a plurality of lanes at a tollgate, a code generated even if an adjacent radio wave is received by mistake is stored in the storage unit 65 in the wireless card 6 in advance. An error occurs unlike the set code. This provides lane interference countermeasures. For example, even if the wireless card 6 held by the vehicle 7 entering the B lane receives the activation code A1 from the antenna A1 and further enters and receives the activation code B2 from the antenna B2, the activation code A1 and the activation code In the combination of B2, the generated code does not match the code stored in the storage unit 65, so that an error is returned without a response, and the process is not started.
[0029]
FIG. 5 shows a method of performing individual separation of wireless cards using time division in the case of a plurality of lanes at an entrance and an exit tollgate.
As the transmission timing, first, the antenna A1 in the A lane is transmitted, then the antenna B1 in the B lane is transmitted, then the antenna C1 in the C lane is transmitted, then the antenna A2 in the A lane, the antenna in the B lane B2 and the antenna C2 of the C lane are sequentially transmitted.
[0030]
The wireless card 6 held by the vehicle 7 entering the A lane receives the signals from the antennas A1 and A2, and can respond with the ID identification data RA after receiving the antenna A2. The wireless card 6 held by the vehicle 7 entering the B lane receives the signals of the antennas B1 and B2, and can respond with the ID identification data RB after the reception of the antenna B2. The wireless card 6 held by the vehicle 7 entering the C lane receives the signals of the antennas C1 and C2, and can respond with the ID identification data RC after the reception of the antenna C2.
[0031]
After the transmission of the antenna C2, a response from the wireless card 6 held by the passing vehicle is waited for a certain period of time after the transmission of the antenna C2.
As described above, the transmission timing is relatively time-divided to perform interference countermeasures, thereby preventing lane interference.
[0032]
Further, the control unit 61 of the wireless card 6 uses the time interval Δt of the reception data of the antennas A1 and A2 as a determination condition by the timekeeping unit 67, and receives the signals from the antennas A1 and A2 to generate a code A When the identification data of the lane is also included, the return timing of the data of the wireless card 6 is set to t1 after reception of the antenna A2, the return timing of the data of the wireless card 6 is set to t2 after reception of the antenna B2 in the B lane, and the return timing of the wireless card 6 is set in the C lane. The data return timing is changed to t3 after reception of the antenna C2, so that interference of data return of the wireless card 6 can be prevented.
[0033]
FIG. 6 shows a combination of identification data in the case of three or more lanes. One lane is identification data A, two lanes are identification data B, three lanes are identification data C, and this is a group. Identification data A, 5 lanes are identification data B, 6 lanes are identification data C, and they are divided into two groups. 7 lanes are identification data A, 8 lanes are identification data B, 9 lanes are identification data C, and they are 3 groups. The lane interference can be prevented by sequentially combining the identification data A, B, and C for each group.
[0034]
As described above, according to the above-described embodiment, narrow directivity and high electric field area communication can be performed by using two antennas having different directivity characteristics and forming a zone where the directivities overlap each other. In addition, by transmitting transmission radio waves from each antenna in a time-sharing manner, it is possible to realize the transmission without necessarily changing the frequency of each antenna.
[0035]
In addition, a wireless card that receives radio waves from each antenna returns a response when a predetermined code matches a code received from each antenna according to a predetermined procedure. Can be prevented.
In addition, although this code coincides with the adjacent lane, the lane interference can be prevented by outputting a combination signal in which data from each antenna is different.
[0036]
In addition, interference between adjacent lanes can be prevented by relatively shifting the transmission time division timing of each antenna.
In the above embodiment, the case where two antennas are used has been described, but the present invention is not limited to this, and a plurality of antennas may be used.
[0037]
【The invention's effect】
As described above in detail, according to the present invention, it is possible to provide an information communication system capable of performing stable wireless communication with narrow directivity.
[Brief description of the drawings]
FIG. 1 is a block diagram schematically showing a configuration of a wireless fee collection system according to an embodiment of the present invention.
FIG. 2 is a diagram illustrating a wireless communication zone of two antennas.
FIG. 3 is a diagram illustrating a communication operation using two antennas.
FIG. 4 is a diagram illustrating separation of wireless communication zones in a plurality of lanes.
FIG. 5 is a diagram showing a configuration example of time division in a plurality of lanes.
FIG. 6 is a diagram for explaining combinations in a plurality of lanes.
FIG. 7 is a diagram schematically showing a configuration of a conventional toll collection system using a wireless system at an entrance and an exit tollgate.
FIG. 8 is a diagram illustrating a wireless communication zone of one antenna.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Toll collection device 2 ... Communication control device 3, 5 ... Antenna 4 ... Transmission device 6 ... Wireless card 7 ... Vehicle 21, 61 ... Control part 26, 67 ... Clock part 62 ... Antenna part 65 ... Storage part

Claims (4)

First transmitting means for transmitting a first identification signal;
Second transmitting means for transmitting a second identification signal;
Control means for controlling the transmission of the second transmission means and the transmission of the first transmission means in a time-division manner and alternately transmitting the transmissions;
Receiving means for receiving a first identification signal from the first transmitting means and a second identification signal from the second transmitting means, which are alternately transmitted by the control means;
Generating means for generating identification information from the first identification signal and the second identification signal received by the receiving means;
Collation means for collating the identification information generated by the generation means with predetermined identification information;
A response unit that responds if the result of the comparison is a match,
An information communication system, comprising: A plurality of transmitting means for transmitting different identification signals, provided for each different identification signal,
Receiving means for receiving different identification signals transmitted from the plurality of transmitting means,
Generating means for generating identification information from different identification signals received by the receiving means;
Collation means for collating the identification information generated by the generation means with predetermined identification information;
A response unit that responds if the result of the comparison is a match,
An information communication system, comprising: A plurality of transmitting means for transmitting different identification signals, provided for each different identification signal,
Control means for controlling the transmission from the plurality of transmission means in a time-division manner so that only one transmission means is in a transmission state;
Receiving means for receiving different identification signals transmitted from the plurality of transmitting means by the control means,
Generating means for generating identification information from different identification signals received by the receiving means;
Collation means for collating the identification information generated by the generation means with predetermined identification information;
A response unit that responds if the result of the comparison is a match,
An information communication system, comprising: Transmitting means for transmitting different combination signals in which a plurality of lanes are provided, and predetermined identification information is generated for each lane,
Receiving means for receiving the combination signal transmitted by the transmitting means;
Generating means for generating identification information from the combination signal received by the receiving means;
Collating means for collating the identification information generated by the generating means with the predetermined identification information;
A response unit that responds if the result of the comparison is a match,
An information communication system, comprising:

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