JPH04304718A - Non-contact passing gate system - Google Patents

Abstract

PURPOSE:To accurately execute data transfer processing between the system and each of media even when plural media intrudes in a communication available area. CONSTITUTION:When two commutation tickets 11a, 11b are sequantially shown in a communication available area formed above the antenna of an automatic wicket machine 1, the automatic ticket checker 1 receives a recognition data sent from the commutation ticket 11a shown before at a frequency f2 and executes main data transfer processing with the commutation ticket 11a at a frequency f1 different from that of the recognition data. At this time, a recognition data is sent in a prescribed time interval from the commutation ticket 11b shown later at the frequency f2, and the automatic ticket checker 1 recognizes the recognition data sent from the commutation ticket 11b after the end of data transfer processing with the commutation ticket 11a to start the data transfer with the commutation ticket 11b.

Description

[Detailed description of the invention]

0001

[Industrial Application Field] The present invention relates to a pass gate system consisting of a gate such as a ticket gate installed at a railway station and a medium such as a commuter pass, and in particular, data is wirelessly transmitted and received between the gate and the medium. related to a contactless passgate system.

0002

[Prior Art] Considering the improvement of user operability when passing through a gate, data is wirelessly transmitted and received with a medium.
A non-contact pass gate system has been proposed that determines whether or not a vehicle can pass based on the obtained data. Such a contactless pass gate system can be used for ticket gate processing at stations, entrance/exit control in buildings, and customer management at stores.

[0003] However, in the contactless pass gate system, the range of communication between the user's media and the gate is set at approximately 10 cm to 3 m.
When multiple people pass through a gate in succession, multiple media may be presented in the communicable area of the gate, and in such a case, data may be mixed at the gate.
All wireless transmission and reception with the medium becomes impossible.

[0004] Therefore, for example, Japanese Patent Laid-Open No. 13497/1983
In the method disclosed in No. 8, the controller of the gate intermittently transmits a preliminary signal to the medium, and the medium sends a signal indicating that the preliminary signal has been received to the gate, thereby starting to transmit and receive data. I'm trying to make it possible.

[0005]

[Problems to be Solved by the Invention] However, in the above-mentioned conventional non-contact pass gate system, if a plurality of media enters the communicable area during a pause in the preliminary signal transmitted intermittently from the gate, the plurality of media Next, the preliminary signals transmitted from the gate are received at the same time, and response signals are transmitted simultaneously from a plurality of media, causing interference at the gate, which has the disadvantage that all data transmission and reception becomes impossible.

An object of the present invention is to generate a recognition signal at predetermined time intervals from a medium that has entered a communicable area, so that when a plurality of media enter the communicable area at different timings, the first medium that has entered the communicable area can be recognized. is detected at the gate, and data is transmitted and received with this first specified medium. Even when multiple media are presented in a communicable area, it is possible to communicate with each medium without causing interference. An object of the present invention is to provide a contactless passgate system that can accurately send and receive data.

[0007]

[Means for Solving the Problems] The contactless passgate system of the present invention transmits and receives data wirelessly between a medium and a gate, in which an area signal indicating a communicable area is transmitted at a first frequency. The gate is provided with an area signal transmitting means for transmitting by electromagnetic waves of a second frequency, the recognition data transmitting means for transmitting unique recognition data by electromagnetic waves of a second frequency when the area signal is received is provided in the medium, and the main data is transmitted by a third frequency. The main data transmitting/receiving means for transmitting and receiving data using electromagnetic waves having a frequency of is provided in the gate and the medium.

The contactless passgate system according to claim 1, wherein the electromagnetic wave of the first frequency in the area signal transmitting means is a power carrier wave for supplying power to a medium.

[0009]

According to the present invention, when a medium receives an area signal transmitted from a gate, recognition data specific to the medium is transmitted by electromagnetic waves having a frequency different from that of the area signal. The gate that has received this recognition data transmits and receives main data to and from the medium that transmitted the recognition data using electromagnetic waves of the third frequency. therefore,
When multiple media enter the communication range one after another, the gate that receives the recognition data sent from the medium that entered first uses electromagnetic waves with a frequency different from the frequency of the recognition data to communicate with the medium. Executes sending and receiving of main data. Therefore, recognition data transmitted from a medium that later enters the communication range is not received by the gate until the gate finishes transmitting and receiving main data with the previous medium, and interference occurs during the transmission and reception of main data. will not occur.

Furthermore, by using the first frequency electromagnetic wave used for transmitting the area signal from the gate as a power carrier wave that supplies power to the medium, it is possible to eliminate the need for transmitting the area signal.

[0011]

Embodiment FIGS. 1 and 2 are a side view and a front view, respectively, of an automatic ticket gate to which a contactless pass gate system according to an embodiment of the present invention is applied. The automatic ticket gates 1 are installed in pairs at the ticket gates of stations, and a passage is formed between them. A plurality of sensors 3 are provided on the side of the automatic ticket gate 1, and these sensors 3 detect the traffic conditions of users. Doors 4 and 5 are attached to the front and rear ends of the automatic ticket gate 1, and the doors 4 and 5 are installed on the front and rear ends of the automatic ticket gate 1.
5 is opened and closed. An antenna 2 is installed on the top surface of the automatic ticket gate 1, and transmits and receives data to and from a commuter pass presented in a communicable area configured in a predetermined range above.

As shown in FIG. 7, the automatic ticket gate 1 transmits an area signal S1 from an antenna 2 at regular time intervals. The range in which the commuter pass 11a, which is a medium, can normally receive this area signal S1 is the receivable area.

FIG. 3 is a block diagram showing the configuration of the transmitter/receiver section of the automatic ticket gate. Modulation circuits 26 and 29 and demodulation circuits 22 and 24 are connected to the data transmission and reception control section 21. Modulation circuits 26 and 29 are amplifiers 27 and 3, respectively.
0 to antennas 2c and 2d. A high frequency signal of frequency f1 is inputted to the modulation circuit 26 from the oscillation circuit 28. The modulation circuit 26 modulates this high frequency signal using the main data output from the data transmission/reception control section 21, and transmits it from the antenna 2c via the amplifier 27.

The other modulation circuit 29 is connected to the antenna 2d via an amplifier 30.

A high frequency signal of frequency f3 is inputted to the modulation circuit 29 from the oscillation circuit 31.

The modulation circuit 29 modulates this high frequency signal using the area signal data output from the data transmission/reception control section 21, and transmits it as an area signal from the antenna 2d via the amplifier 30. The data transmission/reception control unit 21 outputs area signal data at regular time intervals, and forms a communicable area in the vicinity of the antenna 2d in accordance with the output intensity of electromagnetic waves.

The electromagnetic waves received by the antenna 2a are input to the demodulation circuit 22 via the amplifier 23, and the recognition data transmitted from a medium such as a commuter pass is input to the data transmission/reception control section 21. The reception frequency of this antenna 2a is fixed to the frequency f2 of a carrier wave of recognition data transmitted from a medium to be described later.

The electromagnetic waves received by the antenna 2b are input to the demodulation circuit 24 via the amplifier 25, and the main data transmitted from the medium is input to the data transmission/reception control section 21.

The receiving frequency of this antenna 2b is fixed to the frequency f1 of a carrier wave of main data transmitted from a transmitting/receiving section of a medium to be described later.

FIG. 4 is a block diagram of a medium transmitting/receiving section to which a contactless passgate system according to an embodiment of the present invention is applied. The commuter pass 11 presented to the automatic ticket gate 1 as a medium is composed of, for example, an IC card. The data transmission/reception control section 41 of the transmission/reception section of the commuter pass 11 includes a modulation circuit 42, a demodulation circuit 49, and a carrier switching circuit 4.
5 is connected. Modulation circuit 42 is connected to antenna 44a via amplifier 43. On the other hand, demodulation circuit 4
9 is connected to the antenna 44b via an amplifier 50. Further, the commuter pass 11 includes an area signal detection circuit 51. This area signal detection circuit 51 is connected to an antenna 44c whose reception frequency is fixed at f3.

The modulation circuit 42 includes oscillation circuits 46 and 47.
The carrier switching circuit 45 switches the frequency of the high frequency signal input to the modulation circuit 42 according to the selection signal output from the data transmission/reception control section 41. . The modulation circuit 42 transmits this high frequency signal to the data transmission/reception control section 41.
The modulated data is modulated by the data output from the antenna 44a, and is transmitted from the antenna 44a via the amplifier 43. The data output from the data transmission/reception control unit 41 is stored in an EEPROM (not shown).
recognition data including ID codes stored in etc.,
There is main data consisting of usable sections, expiration dates, etc.

When the data transmission/reception control unit 41 outputs recognition data, it outputs a selection signal to the carrier switching circuit 45 so that a high frequency signal of frequency f2 is input to the modulation circuit 42, and when outputting main data, it outputs a selection signal of frequency f1. A selection signal is output to the carrier switching circuit 45 so that the high frequency signal is input to the modulation circuit 42. At the same time, the data transmission/reception control section 41 also outputs a selection signal to the transmission frequency switching section 48, so that the transmission frequency of the antenna 44a matches the frequency of the carrier wave of either the recognition data or the main data.

The receiving frequency of the antenna 44b is fixed at f1, and the main data sent from the antenna 2c of the automatic ticket gate 1 is received by this antenna 44b. This main data is input from the demodulation circuit 49 to the data transmission/reception control section 41 via the amplifier 50. This data includes usage date and time data indicating travel history, usage station name data, and the like. The data transmission/reception control unit 41 stores input data in a storage unit configured with an EEPROM (not shown) or the like.

The antenna 44c receives an area signal transmitted from the antenna 2d of the automatic ticket gate 1. This area signal also serves as power transport, and the area signal detection circuit 51
The power component of the electromagnetic waves received at is input to the power supply circuit 52, and power is supplied from this power supply circuit 52 to each electronic component that constitutes the commuter pass 11.

FIG. 5 is a flowchart showing the processing procedure of the transmitter/receiver section of the automatic ticket gate and commuter pass that constitute the contactless passgate system. Automatic ticket gate 1 receives frequency f3 from antenna 2d at fixed time intervals after power is turned on.
It transmits an area signal using a carrier wave (n1), and waits for transmission of recognition data from the commuter pass 11 (n2). When the commuter pass 11 is presented within the communication area configured above the antenna 2 of the automatic ticket gate 1 and the commuter pass 11 receives an area signal, it receives power and starts operating. Recognition data is transmitted at predetermined time intervals using a carrier wave (n11 to n13). After receiving this recognition data, the automatic ticket gate 1 transmits a confirmation signal (n3), and sends and receives main data such as passability determination data and passage history data to and from the commuter pass 11 that received this confirmation signal. frequency f
Execute via 1 carrier wave (n4, n14, n15)
. The automatic ticket gate 1 stops operating in response to input of a termination command from an internal higher-level device, and continues until this termination command is input.
1, it waits for reception of recognition data (n5).

When a single commuter pass 11 is presented within the communication area configured above the antenna 2 of the automatic ticket gate 1, the recognition data transmitted from the commuter pass 11 is transmitted to the automatic ticket gate 1. The commuter pass 11 starts transmitting and receiving data after receiving the confirmation signal.
As shown in the figure, two commuter passes 11a and 1 are placed in the communication area.
1b are presented sequentially, recognition data is first transmitted from the commuter pass 1a that entered the communicable area first, and then recognition data is transmitted from the commuter pass 11b that entered the communicable area later. Therefore, the automatic ticket gate 1 receives the recognition data transmitted from the commuter pass 11a and transmits a confirmation signal to the commuter pass 11a. The confirmation signal sent from the automatic ticket gate 1 includes an ID code included in the recognition data, and thereby the commuter pass 11a is sent to the automatic ticket gate 1.
The terminal recognizes that the confirmation signal sent from the terminal is sent to itself, and transmission and reception are performed between the commuter pass 11a and the automatic ticket gate 1.

During data transmission and reception between the commuter pass 11a and the automatic ticket gate 1, the commuter pass 11b continues to transmit recognition data, but this recognition data uses an electromagnetic wave of a different frequency as a carrier wave than the data transmission and reception being executed. In order to do this, data transmission and reception processing (n4
, n15), data transmission and reception between the two continues without interference.

On the other hand, the commuter pass 11b has n shown in FIG.
11 to n13, the frequency f is
The recognition data continues to be transmitted using the second carrier wave. The recognition data transmitted from the commuter pass 11b is not recognized while the automatic ticket gate 1 is transmitting and receiving data with the commuter pass 11a, and the automatic ticket gate 1 is not aware of the data transmission and reception with the commuter pass 11a. After the end, the recognition data transmitted from the commuter pass 11b is first received, and data transmission/reception processing with the commuter pass 11b is performed from this time. In this way, automatic ticket gate 1
After completing data transmission/reception with the commuter pass 11a presented first, data transmission/reception is executed with the commuter pass 11b presented later.

FIG. 6 is a flowchart showing the processing procedure of the transmitter/receiver section of an automatic ticket gate constituting a contactless passgate system according to another embodiment of the present invention. While transmitting and receiving main data with the commuter pass 11, when recognition data transmitted from another commuter pass is received (n21), an ID code is read from the recognition data at the end of one block of the transmitting and receiving process (n22), Register that there is a commuter pass waiting to be processed (n23) and continue processing the next block (
n24). In this way, when another commuter pass is waiting for the communication process to start during the communication process with one commuter pass, by memorizing that status, multiple commuter passes can be presented in the communicable area. In such a case, processing with the next commuter pass can be started immediately after the processing with the previous commuter pass is completed.

[0030]

[Effects of the Invention] According to the present invention, since the recognition data is transmitted from the medium at a frequency different from the frequency of the main data transmitted and received between the medium and the gate, the recognition data is transmitted between the medium and the gate at the position. In sending and receiving the main data in
No interference occurs due to recognition data transmitted from other media. Furthermore, after the transmission and reception of main data is completed, the gate receives recognition data transmitted from another medium, and starts transmission and reception of main data with this medium. therefore,
Even when a plurality of media are presented in a communicable area, data transmission and reception processing can be executed in order from the medium presented first, and data can be accurately transmitted and received for each of the plurality of media.

Furthermore, by using a power carrier wave as the area signal transmitted from the gate, the operation of the medium can be started after receiving this signal, and the process of detecting whether or not the area signal is received in the medium becomes unnecessary.

[Brief explanation of drawings]

FIG. 1 is a side view of an automatic ticket gate applied to a contactless pass gate system 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 a transmitting and receiving unit of the automatic ticket gate.

FIG. 4 is a block diagram of a transmission/reception unit of a commuter pass to which the contactless passgate system is applied.

FIG. 5 is a flowchart showing the processing procedure of the automatic ticket gate and the commuter pass transmitting/receiving unit.

FIG. 6 is a flowchart showing a processing procedure of a transmitting/receiving section of an automatic ticket gate to which a contactless pass gate system according to another embodiment of the present invention is applied.

FIG. 7 is a diagram showing a presentation state of a commuter pass in a general contactless pass gate system including an embodiment of the present invention.

[Explanation of symbols]

1- Automatic ticket gate (gate) 11- Commuter pass (medium)

Claims (2)

[Claims] Claims: 1. A contactless pass gate system for wirelessly transmitting and receiving data between a medium and a gate, wherein the gate is provided with area signal transmitting means for transmitting an area signal indicating a communicable area using electromagnetic waves of a first frequency; Recognition data transmission means for transmitting unique recognition data using electromagnetic waves at a second frequency when the area signal is received is provided in the medium, and main data transmission/reception means for transmitting and receiving main data using electromagnetic waves at a third frequency is provided at a gate and A non-contact pass gate system characterized by being provided on a medium. 2. The contactless passgate system according to claim 1, wherein the electromagnetic wave of the first frequency in the area signal transmitting means is a power carrier wave that supplies power to a medium.