JPH04288696A - Non-contact pass gate system - Google Patents

Abstract

PURPOSE:To accurately receive data transmitted from each medium when plural media are offered simultaneously within the communication range of a gate. CONSTITUTION:When the occurrence of an interference state is detected in an automatic ticket examination machine(n22), an interruption signal is transmitted to a card 1 offered first(n23), and the transmission data of a card 2 offered later is received(n25), and a communication interruption signal is transmitted to the card 2(n25). In such a way, a restart signal is transmitted to the card 1 after communication to both the cards 1 and 2 are interrupted(n26), and a communication restart signal is transmitted to the card 2 after the data transmission of the card 1 is completed(n28).

Description

[Detailed description of the invention]

0001

[Industrial Field of Application] This invention relates to a pass gate system such as the automatic ticket gate installed at a railway station and a commuter pass. Concerning a contactless passgate system.

0002

2. Description of the Related Art For example, automatic ticket gates where passengers present their commuter passes and the like when passing through are equipped with automatic ticket gates for the purpose of reducing the number of station staff. The user inserts his or her commuter pass into the insertion slot of this automatic ticket gate, and the automatic ticket gate reads data such as the riding section and boarding deadline from the inserted commuter pass to determine whether or not the user can pass. The door will be opened and closed based on this. However, in many cases, users carry their commuter pass in their commuter pass, etc., and if they request to insert their commuter pass when passing through a ticket gate, the user will have to insert the commuter pass from the commuter pass each time. You have to take it out, which makes handling the commuter pass complicated.

[0003] Therefore, in the conventional pass gate system,
A non-contact pass gate system has been proposed in which data is sent and received using electromagnetic waves as a carrier between a medium such as a commuter pass and a gate such as a ticket gate. In this contactless passgate system, data is wirelessly transmitted and received between the media and the gate, so users can leave their commuter pass or other media in their commuter pass and still be within communication range with the gate. It is only necessary to present the information, and the handling of the medium when passing through the gate can be facilitated.

0004

[Problems to be Solved by the Invention] However, in the non-contact pass gate system, if the frequency of the electromagnetic wave used as a carrier is single when transmitting and receiving data between the medium and the gate, multiple media If both media are present in the reading area at the same time, data interference occurs, and there is a problem in that data cannot be accurately read from each medium.

[0005] An object of the present invention is to temporarily suspend communication to all media when a state of communication interference is detected, and then start communication with each medium in sequence.
To provide a non-contact pass gate system capable of accurately reading data from each medium even when a plurality of mediums are present in a reading area at the same time.

[0006]

[Means for Solving the Problems] A non-contact type pass gate system of the present invention is a pass gate system that transmits and receives data using electromagnetic waves as a carrier between a medium and a gate, in which the gate is provided with a state of interference of received data. interference detection means for detecting interference, and interruption signal transmission means for transmitting an interruption signal instructing temporary interruption of communication to all of the plurality of media in which the interference has occurred when the interference detection means detects interference;
Communication restart signal transmitting means for sequentially instructing each of the plurality of media to resume communication, and communication interrupting means for suspending and restarting communication when receiving an interrupt signal and a restart signal in the medium; and A non-contact pass gate system characterized by being provided with a communication restart means.

[0007]

[Operation] In this invention, if multiple media are located in the communication range of the gate at the same time and interference occurs due to data being transmitted from these multiple media, it is possible to An interrupt signal is sent to all of the plurality of media. The medium suspends data transmission upon receiving the suspend signal. Next, a communication restart signal is sequentially transmitted from the gate to each medium, and the medium that receives this communication restart signal resumes data transmission. Therefore, after temporary data transmission is interrupted for all media where interference has occurred, data is transmitted from each medium in turn.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIGS. 1 and 2 are a side view and a front view, respectively, showing a ticket gate which is an example of a gate to which a non-contact pass gate system according to an embodiment of the present invention is applied.

[0009] The automatic ticket gate main body 1 is installed as a set of two at the ticket gate, and a ticket gate passage is formed between the two. An antenna 2 and a display 3 are provided on the top surface of the automatic ticket gate 1. The antenna 2 transmits and receives data to and from the commuter pass presented by the user passing through the ticket gate. The display 3 displays a message to the user including the result of the determination as to whether or not the vehicle is allowed to pass. Doors 4 and 5 are provided at the front and rear ends of the automatic ticket gate 1, and the doors 4 and 5 are opened and closed based on the result of the determination as to whether or not passage is allowed. In addition, automatic ticket gate 1
A plurality of sensors 6 are provided on the side surface of the passageway, and detect whether or not there is a user in the passageway.

FIG. 3 is a block diagram of the control section of the automatic ticket gate. The CPU 11 has an interface circuit 14 to
A display control section 18, a door opening/closing control section 19, a receiving circuit 20, a transmitting circuit 27, and a sensor 6 are connected via 17 and 26. The display control unit 18 is a CP
A message is displayed on the display 3 according to the drive data output from U11. The door opening/closing control section 19 is C
Doors 4 and 5 based on the control data output from PU11
Open and close. The receiving circuit 20 outputs data received via the antenna 2 to the CPU 11. The transmitting circuit 27 transmits data from the antenna 7 to the medium. Further, the on/off state of the sensor 6 is input to the CPU 11, and is used to determine the presence or absence of users in the passage. CPU11
controls these input/output devices according to a program written in the ROM 12 in advance. At this time, the input/output data is written into a predetermined memory area of the RAM 13.

FIG. 4 is a diagram showing the configuration of a receiving circuit and a transmitting circuit connected to the control section of the automatic ticket gate. The receiving circuit 20 uses a frequency determined by the capacitance of the capacitor as the reception frequency of the antenna 2, amplifies the signal received by the antenna 2 with an amplifier 22, demodulates it with a demodulation circuit 21, and outputs the signal to the CPU 11 of the control unit as received data. . This communication circuit 20 includes a voltage detection circuit 23. The voltage detection circuit 23 detects the output voltage of the amplifier 22 and inputs the detection result to the CPU 11.

On the other hand, the transmitting circuit 27 is the carrier generating circuit 2
A modulation circuit 24 modulates the high frequency signal output from the CPU 11 using data output from the CPU 11, and transmits the modulated signal from the antenna 7.

FIG. 5 is a block diagram of a controller for a commuter pass, which is a medium constituting the non-contact pass gate system. This commuter pass can be constituted by, for example, an IC card. The CPU 31 of the control unit included in the commuter pass is RO
Processing operations are executed according to a program written in advance in M32. Data input and output during this processing operation is temporarily stored in the RAM 33. Further, an EEPROM 34 is connected to the CPU 31, and data for determining whether or not the commuter pass can be used, such as the sections where the commuter pass can be used and the expiration date, is written therein. An antenna 39 is connected to the CPU 11 via a transmitting circuit 38, and the CPU 31
9 transmits data for determining passability. Further, the receiving circuit 35 receives power from electromagnetic waves constantly transmitted from the automatic ticket gate 1 via the antenna 37. The power received by the antenna 37 is led from the receiving circuit 35 to the power supply circuit 36, and is supplied to each electronic component included in the commuter pass.

FIG. 6 is a circuit diagram of a receiving circuit and a transmitting circuit provided in the controller of the commuter pass. The commuter pass reception circuit 35 uses the frequency determined by the capacitance of the capacitor as the reception frequency of the antenna 37, amplifies the signal received by the antenna 37 with an amplifier 42, demodulates it with a demodulation circuit 41, and outputs it to the CPU 31 as reception data. .

On the other hand, the transmitting circuit 38 is connected to the carrier generating circuit 4
The high frequency signal generated by 4 is sent to the CPU in the modulation circuit 43.
It is modulated with the transmission data output from antenna 39.
to the automatic ticket gate.

FIG. 7 is a flowchart showing the processing procedure of the control section of the commuter pass and automatic ticket gate. The CPU 31 of the commuter pass receives power from the automatic ticket gate 1, and the EEP
The data for determining passability stored in the ROM 34 is read together with its own ID data, and this is transmitted to the automatic ticket gate 1. Since the commuter pass can receive power supply by electromagnetic force in a certain range near the automatic ticket gate 1, there is a possibility that two or more commuter passes exist in this communicable area. However, the automatic ticket gate 1 allows users to pass through the ticket gate one at a time, and even if there are two or more commuter passes within the communication area of the automatic ticket gate,
These always invade the communicable area with a time difference.

[0017] That is, two commuter passes (card 1, card 2
) exists in the communicable area, the subsequent card 2 enters the communicable area after the previous card 2. Therefore, automatic ticket gate 1 receives data transmitted from card 2 while receiving data transmitted from card 1, causing interference (n21, n22). If the card 2 is inserted after the data communication with the card 1 is completed, no interference will occur, and in this case normal processing, which will be described later, will be performed.

[0018] When interference occurs at the automatic ticket gate 1,
Before card 2 starts data transmission (n11), it transmits the ID code and communication interruption signal received from card 1 (n23). Upon receiving this interruption signal, the card 1 interrupts data transmission (n2). At this time, card 2
continues to transmit data, automatic ticket gate 1 receives the data transmitted from card 2 (n24), and transmits the ID code of card 2 and an interruption signal (n25).
. As a result, card 2 receives the interruption signal and temporarily suspends data transmission (n12). In this way, when data interference occurs at the automatic ticket gate 1, an interruption signal instructing to stop data transmission is sent to each of the two commuter passes where the interference occurred, so that both Data transmission is interrupted on the card.

FIG. 8 is a diagram showing in detail the processing procedure after data transmission for a commuter pass. The transmission of own ID data and passability determination data is performed by dividing into multiple blocks, and when the transmission of data for each block is completed, it is determined whether or not a communication interruption signal has been received (n31
). When a communication interruption signal is received, it is determined whether the ID code included in the communication interruption signal matches its own ID code (n32), and if the ID code matches, the data transmission is stopped. Stop (n33).

[0020] After that, it waits for reception of a communication restart signal (
n35), and when it receives a communication restart signal including its own ID code, it starts transmitting data again (n36). Note that the transmitted data consisting of ID data and data for determining passability will not be transmitted unless a communication interruption signal is received.
It is repeatedly transmitted while receiving power supply from the automatic ticket gate 1. Further, if the ID code of the received communication interruption signal does not match its own ID code, data transmission is continued (n34). In the above process, n
33 corresponds to the communication interrupting means of the present invention, and n36 similarly corresponds to the communication restarting means.

[0021] The automatic ticket gate 1 has a card 1 and a card 2.
After transmitting a transmission in progress signal to card 1, a transmission restart signal is transmitted to card 1 prompting it to resume data transmission (n
26). The ID code of card 1 is attached to this transmission restart signal, and card 1 has n35 and n36 shown in FIG.
Data transmission is started by the process (n3). In this way, in the data transmission started after the transmission is interrupted, the operation is stopped when the transmission of the transmission data consisting of the ID code and the passability determination data is completed once (n4). on the other hand,
When the automatic ticket gate 1 finishes receiving the data transmitted from the card 1, it transmits a transmission restart signal to the card 2 (n27, n28). Card 2, which has received this transmission restart signal, starts transmitting data in the same way as card 1, transmits the transmission data once, and then stops transmitting data (n
13, n14). The automatic ticket gate 1 receives the data transmitted from the card 2, determines whether or not the vehicle is allowed to pass, and then waits to receive new data (n29).

FIG. 9 is a diagram showing details of the process for determining the occurrence of interference in the automatic ticket gate.

[0023] The automatic ticket gate 1 waits for data to be transmitted from the commuter pass (n41), and when it receives the data transmitted from the commuter pass, it checks the reception level and the content of the data (n42, n43). If the reception level is lower than the reference level, it is determined that noise has been received, and the process returns to the transmission data standby state. When the reception level exceeds a predetermined level, the contents of the data are checked, and in the event of an abnormality such as the data being unclear, n23 shown in Figure 7 is used.
Execute the following processing. If the data is normal, that is, if multiple commuter passes are not presented within the communication range at the same time, normal reception processing is executed (n44), and after data reception is completed, data is transmitted from the next commuter pass. (n45).

[0024] Furthermore, the transmission processing of the transmission interruption signal and the transmission restart signal at the automatic ticket gate is performed at least on the condition that the next commuter pass is presented after the ID code of the previously presented commuter pass has been successfully read. executed. If two or more cards are presented at an interval shorter than this, the ID card of the previous commuter pass cannot be read, and the automatic ticket gate 1 does not perform operations related to data processing. Therefore, when the sensor 6 detects the passage of a user, the doors 4 and 5 are closed, and passage through the ticket gate passage is restricted.

[0025] Furthermore, in cases where the automatic ticket gate 1 transmits data to be written on the card, such as when a prepaid card such as a coupon ticket is presented, the automatic ticket gate 1 sends data to the card presented first. It is conceivable that the next card may be presented while data is being sent to the
In such a case, it is possible to read only the ID code of card 2 before interrupting the transmission of reply data to card 1, and then send a transmission interruption signal to cards 1 and 2 in succession. can.

[0026]

According to the present invention, when a plurality of media are presented within the communication range of an automatic ticket gate, data transmission is interrupted for all the media, and then a communication restart signal is sent to each media. Since it is possible to send data and receive data individually in sequence, it is possible to accurately read data from multiple media presented in the communicable area, and to always perform normal processing operations. There are advantages.

[Brief explanation of the drawing]

FIG. 1 is a side view of an automatic ticket gate constituting a gate for a non-contact storage medium according to an embodiment of the present invention.

FIG. 2 is a front view of the automatic ticket gate.

FIG. 3 is a block diagram of the automatic ticket gate.

FIG. 4 is a diagram showing the configuration of a transmitting circuit and a receiving circuit included in the automatic ticket gate.

FIG. 5 is a block diagram of a card such as a commuter pass that is a medium of the contactless pass gate system of the present invention.

FIG. 6 is a diagram showing the configuration of a transmitting circuit and a receiving circuit included in the card.

FIG. 7 is a flowchart showing part of the automatic ticket gate and card processing operations.

FIG. 8 is a flowchart showing in detail the main part of the processing procedure for the commuter pass.

FIG. 9 is a flowchart showing in detail the processing procedure of the main parts of the automatic ticket gate.

[Explanation of symbols]

1- Automatic ticket gate (gate) 30- Commuter pass (media) 20, 35-receiving circuit 27, 38-transmission circuit

Claims (1)

[Claims] 1. A pass gate system for transmitting and receiving data using electromagnetic waves as carriers between a medium and a gate, wherein the gate includes interference detection means for detecting a state of interference in received data; Interruption signal transmitting means for transmitting an interruption signal instructing temporary interruption of communication to all of the plurality of media in which interference has occurred when detected, and communication restarting means for instructing each of the plurality of media to resume communication sequentially. A non-contact pass gate system, characterized in that the medium is provided with communication interrupting means and communication restarting means for interrupting and restarting communication when receiving an interrupting signal and a resuming signal. .