JP2586604B2 - Individual identification device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to an individual identification device for identifying an individual who moves in a predetermined section, and in particular, identifies each runner (individual) and its position in an Ekiden competition. And a device for calculating a section required time.

[Conventional technology]

2. Description of the Related Art Conventionally, a method of identifying and tracking a runner in an Ekiden competition or the like is performed by a relay broadcast or the like by a television camera mounted on a relay vehicle accompanying the runner. In addition, the measurement of the runner's section record is as follows: the staff waiting at the goal of each section checks the reached runner and counts it with a stopwatch, and at the same time, the other staff reads the runner's bib number in the order of arrival The sound is recorded on a tape recorder, and after the competition is over, the two are played together.

On the other hand, as a conventional runner (individual) identification device, there is a configuration shown in FIGS. 5 (a) and 5 (b). This uses an identification tag 2, a sensor 3 ', and a decoder 5'. When the identification tag 2 attached to a runner approaches the sensor 3 ',
The electromagnetic field generated by the excitation antenna 11 causes the coil
When a current flows through 12 and an electromotive voltage is generated across the resistor R, the electromotive force is detected by the voltage detection unit 13 and when the voltage reaches a specified value,
A transmission start signal is transmitted to the transmission unit 14. The electromagnetic field area where the specified voltage can be obtained is called an excitation area. An identification code unique to the runner is recorded in the transmission unit 14 in advance, and the identification code is transmitted from the transmission antenna 15 in synchronization with the transmission start signal.

On the other hand, the receiving antenna 16 on the receiving side receives the identification code transmitted from the transmitting antenna of the identification tag 2 and outputs it to the decoding unit 5. The decoding unit 5 performs detection and error checking of the identification code, and outputs the result to an external device such as a host computer.

At this time, the intensity of the electromagnetic field generated from the excitation antenna becomes weaker in accordance with a known principle as the distance from the excitation antenna increases. There is also an example of facing each other as shown in the figure.

[Problems to be solved by the invention]

In the conventional runner identification method described above, since a person interprets the runner's bib number, there is a possibility of misidentification, and when the runners are running in a group, the target runner is shaded by other runners. In some cases, the bib number may not be visible. In this case, there is a drawback that it becomes impossible to identify and track a runner and to measure section records.

In the configuration shown in FIG. 6 using the known identification tag 2, the sensor unit 3 ', and the decoder 5, the oscillator for supplying the oscillation signal to the excitation antenna in the opposing sensor unit is independent of each other. The phase relationship between the currents from the respective oscillators does not match, for example, as shown in FIG. As a result, as shown in FIG. 7A, there is a disadvantage that the direction of the electromagnetic field E is not uniform, and the excitation area is narrowed.

An object of the present invention is to provide an individual identification device in which the direction of the electromagnetic field is made uniform and the excitation area is enlarged, excluding such disadvantages.

[Means for solving the problem]

The configuration of the individual identification device of the present invention includes a plurality of transmission units that are excited when an electromagnetic field having a certain intensity is detected and transmit an identification code unique to each individual, and a reception unit that receives the identification code from each of the transmission units. A plurality of sensor units each having a unit and an antenna for outputting an electromagnetic field based on a predetermined oscillation signal so as to excite the transmission unit when the transmission units approach each other, and supplying the oscillation signal to each antenna of these sensor units. A common oscillator, and an identification unit for decoding each identification code received by the receiving unit of each sensor unit to identify each transmission unit, and the antennas of each sensor unit are arranged facing each other. Thus, the phase of the electromagnetic field in the space sandwiching each of the sensor means is adjusted to be constant.

〔Example〕

 Next, the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram showing a configuration in a case where the present invention is applied to identification of a runner in a relay race as an embodiment of the present invention. In the present embodiment, the passing runner identification section 1 is installed at a plurality of points on the course Y of the relay road, and identifies runners passing through each point. The passing runner identification unit 1 includes a plurality of identification tags 2 for transmitting codes unique to each scan, a plurality of sensor units 3 for receiving the unique codes from these identification tags 2,
A plurality of decoding units 5 for detecting currents obtained from the sensor units 3 and performing decoding corresponding to each sensor by performing a code error check and the like, and identification codes output from these decoding units 5 include a point code and a passing time. A group control unit 6 for temporarily storing data by adding the data to a floppy disk or an external communication line;
And an oscillating unit 4 for supplying an oscillating signal to the oscillating unit.

The configuration of the identification tag 2 and the sensor unit 3 may be the same as the conventional circuit of FIG. 5 (b). In other words, the excitation antenna 11 by the oscillation signal of the frequency f ₁ supplied by the oscillator 4 to generate the electromagnetic field. Due to this electromagnetic field, a current flows through the coil (L) 12, and as a result, an electromotive voltage is generated across the resistor R. Here RCL resonant circuits, to be sensitive only to electromagnetic field frequency f ₁ defines constants as a resonance frequency f _1, and to reduce the effect of noise.

The voltage detector 13 detects an electromotive voltage of the resistor R, and sends a transmission start signal to the transmitter 14 when the voltage reaches a specified value. The electromagnetic field area where the specified voltage can be obtained is called an excitation area. The identification code unique to the runner is recorded in the transmission unit 14 in advance, and the identification code is transmitted from the transmission antenna 15 in synchronization with the transmission start signal.

The receiving antenna 16 inside the sensor unit 3 is a transmitting antenna.
The identification code transmitted from 15 is received and output to the decoding unit 5.

FIG. 2 is a configuration diagram in the case of having a plurality of sensor units 3 in FIG. By arranging the sensor units 3 in parallel on the relay course Y at intervals enough to allow the runner X to pass, it is possible to identify a large number of runners passing as a group.

In this case, for example, as shown in FIG. 3B, the phases of the currents flowing through the loop antennas inside the
When the electromagnetic field E as shown in FIG. 3A is generated and the posture of the coil 12 inside the identification tag 2 is as shown in FIG. 3, each of the excitation areas Z is widened as shown in FIG. It has a common oscillating unit 4 of the sensor unit 3. Further, in order to prevent the influence of a phase delay in a feed line for feeding power from the oscillating unit 4 to each sensor 3, a feed line having an equal length may be used, and a phase adjusting unit for adjusting the phase may be separately provided.

The multiplexer 7 inputs the identification codes of the runners who have passed each point from the passing runner identification units 1 installed at a plurality of points on the Ekiden course in a time-division manner according to the control signal output from the synchronization unit 10, and identifies and tracks them. Output to the processing unit 8. The identification / tracking processing unit 8 includes identification codes collected from each point,
From the passing time data and the point code, the passing runner name, team name and section required time at each point are identified and calculated using the pre-stored identification code, the runner's name / team reference table and the start time, The information is output to the display unit 9, and the name of the runner, the name of the team, the time required for the section, and the like are displayed as needed.

As described above, the present embodiment has been described in the case where the present invention is applied to the identification and tracking of runners in an Ekiden tournament. However, in the present invention, for example, a runner is replaced with luggage, and a passing runner identification unit is installed in a luggage collection place along a truck transport route. By doing so, it is clear that the present invention can be easily applied to identification and tracking of packages in the logistics business. Further, the present invention can be applied to ticket gate operations in the transportation business such as railways and buses to save labor.

For example, instead of a currently used ticket, each passenger has an identification tag in which the passenger's account number is written in advance, and when the passenger passes through the ticket gate of the boarding station, the station name is written on the identification tag. When passing the ticket gate at the station, get the boarding station name and account number from the identification tag and deduct the specified fare from the financial institution online or online, and issue a ticket, ticket gate, ticket inspection, illegal boarding It is also possible to save labor in ticket gate operations such as checks.

[Effects of the Invention] As described above, when the present invention is applied to, for example, identification and tracking of a runner in a relay race, an identification tag for transmitting a unique code is attached to each runner and installed at a plurality of points on a course. By receiving and processing and displaying the unique code at the sensor unit, there is an effect that identification of a runner, tracking of a passing point, calculation of required time of each section, and the like can be performed at high speed and accurately.

[Brief description of the drawings]

FIG. 1 is a block diagram of a runner identification device for an Ekiden tournament as an embodiment of the present invention, FIG. 2 is a schematic diagram showing the arrangement of a plurality of sensor units in FIG. 1, and FIGS. 3 (a) and 3 (b). FIG. 4 is a pattern diagram of an electromagnetic field generated between the sensor units in FIG. 2 and a phase relation diagram thereof. FIG. 4 is a schematic diagram when the oscillator of FIG. 1 is shared.
5 (a) and 5 (b) are schematic block diagrams of an example of a conventional runner identification device and an equivalent circuit diagram thereof, FIG. 6 is a schematic block diagram of another conventional runner identification device, and FIG. a),
6B is a pattern diagram of an electromagnetic field generated between the sensors in FIG. 6 and a phase relation diagram thereof. DESCRIPTION OF SYMBOLS 1 ... Passer identification part, 2 ... Identification tag, 3 ... Sensor part, 4
... Oscillator, 5 decoder, 6 group controller, 7 multiplexer, 8 identification / tracking processor, 9 display, 10 synchronization, 11 excitation antenna, 12 coil, 13 voltage Detecting unit, 14: transmitting unit, 15: transmitting antenna, 16: receiving antenna, E: electromagnetic field, X: runner, Y: relay course, Z: excitation area.

Claims (1)

(57) [Claims] A plurality of transmitting means for transmitting an identification code unique to each individual when excited by detecting an electromagnetic field having a constant intensity; a receiving unit for receiving the identification code from each of the transmitting means; A plurality of sensor units each having an antenna for outputting an electromagnetic field based on a predetermined oscillation signal so as to excite the transmission unit when the transmission unit approaches, and a common oscillator for supplying the oscillation signal to each antenna of these sensor units And identification means for decoding each identification code received by the reception unit of each sensor means to identify each transmission means, wherein the antennas of each sensor means are arranged facing each other. The individual identification device, wherein the phase of the electromagnetic field in the space sandwiching each of the sensor means is adjusted to be constant.