JPS62228961A - Recognition and reception system for individual body - Google Patents

Abstract

PURPOSE:To accurately decide the presence of an individual body in a monitor area by detecting the carrier component of an answer signal, sorting the output by levels, and discriminating whether the individual body is present in the monitor area or not. CONSTITUTION:Transmitting and receiving terminals (SR) 211-2nl send electromagnetic waves of specific frequencies repeatedly at a constant period for a specific time according to a command from a center device 5 and receive answer signals from individual bodies 71-7m that respective individuals in respective rooms 11-1n have. A transmitting and receiving terminal (SR) detects the carrier component of an answer signal and the level of its detection level is classified and detected, thereby discriminating whether or not the individual bodies 71-7m are present in monitor areas 811-8nl or not according to the classes determined by said detection.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention is applicable to offices, laboratories, factories, etc., when recognizing where a moving object such as an individual or transporting munitions exists. This relates to the receiving method used.

[Conventional technology]

In the past, in order to prevent illegal entry into a specific threatening area, cards, badges, etc. were provided to those who were allowed to enter.
A method of confirming the person authorized to enter by requesting the presentation of these at the entrance or inserting a card into a card reader, and a method of assigning a specific number, password, etc. to each authorized person and inputting it using a keyboard etc. Generally, methods are used to confirm the person who is allowed to enter, such as registering the person's fingerprints, voiceprint, retinal blood vessel shape, etc. as a pattern and using photoelectric detection to confirm the person who is allowed to enter.
These are used to recognize the identity of the person authorized to enter.

In contrast, in recent years, for the purpose of improving the operating efficiency of each moving object in offices, research institutes, factories, etc. and making it easier to confirm the location of the target object, it has been It is possible to grasp the location of each individual from time to time, and to immediately transmit the necessary information to the target individual, or in the event of an emergency such as a fire outbreak. , it has become necessary to convey appropriate instructions and comprehensively implement countermeasures, and when using conventional methods, only one control is able to control access to specific parts, and it is necessary to control each individual in a wide area. This creates defects that cannot always be recognized.

Therefore, as a countermeasure to this problem, an "individual recognition method" applied separately by the present applicant is used to repeatedly transmit electromagnetic waves of a specific frequency to a specific monitoring area for a predetermined period of time, so that multiple individuals can identify each individual. When the electromagnetic wave is received by the equipped receiver, each individual transmits an electromagnetic wave of the same frequency as a response to each individual by its own transmitter after a delay time that is determined differently for each individual, and the response transmission is received. A method has been proposed in which the delay time of each individual is detected individually, and the presence of each individual within the monitoring area is recognized based on the detection results.

[Problem that the invention seeks to solve]

However, in the case of the above-mentioned method, since multiple monitoring areas are placed with adjacent parts overlapped, response transmissions can be received at the same time in each monitoring area. This creates a problem in which it is difficult to determine whether or not it exists.

Means for Solving Problems] In order to solve the above-mentioned problems, the present invention is configured by the following means.

That is, in the method described above, the carrier wave component of the response transmission is detected, the level of this detection output is classified into classes and detected, and it is determined whether or not an individual exists within the monitoring area according to the class determined by this detection. It is assumed to be determined.

[Effect]

Therefore, the detection grade is determined according to the received electric field strength of the response transmission, and when this is equal to or higher than a predetermined grade, it can be determined that the object is present within a specific monitoring area.

[Example J Hereinafter, the present invention will be explained in detail with reference to figures showing examples.

Figure 2 is a block diagram of the entire configuration.
□~1n - Transmitting/receiving terminal device (hereinafter referred to as 5R) with electromagnetic wave transmission and reception functions 2.1~2□g~2n~
2nd is arranged, and these also have a function as a telephone, and are equipped with signal multiplexing demultiplexers (hereinafter referred to as FDV) 311 to 311.
31g to 3n1 to 3nj to a private branch exchange (hereinafter referred to as
PBX) 4, and FDV3.1~3
Solid equipment such as electronic computers (hereinafter referred to as CTE) S through nt
The CTE5 is connected to operating devices such as keyboards, cathode ray tube displays, and printers (hereinafter referred to as MMI).
) 6 is included.

In addition, each SR2, 1 to 2nj repeatedly transmits electromagnetic waves of a specific frequency for a predetermined period of time in response to a command from the CTE5, while each individual in each room 1□ to 1n transmits an individual ( Below, ID) 7, ~1m! ! Possesses a badge with electromagnetic wave transmitting and receiving functions, which allows S
When receiving electromagnetic waves from R2□□~2n, each ID7
．． After a delay time that is set differently every ~7m, each transmits an electromagnetic wave of the same frequency as a response, and each SR2□1~2n receives this response transmission, and the delay time is According to the results detected for each individual, each ID71~
This detects the presence of 7rn.

For each SR2□1 to 2n, an effective range for transmission and reception is determined, and this is defined as a monitoring area 80, to 81j to 8n□.
~8n, and are arranged adjacent to each other and overlapping each other, and each SR2□1~2nd adds its own address number to each detection result and sends it to CTE5.
In CTE 5, it is possible to comprehensively recognize which ID exists in which part of which room, display it on the MMI 6, and print it out on a regular basis.

Figure 3 shows the transmission status of each SR2 and each ID7, ~Tm
This is a timing chart showing the response transmission status of SR.
2 is a specific frequency f as shown in (,). For example, 5
A constant period T1 of sec and a predetermined time T.

The transmission is repeated for a period of 9, and for each ID7, to 7m, a predetermined period of time T starts immediately before the transmission (,).

The power supply (b) of the receiving unit is turned on in synchronization with the period T1 until immediately after the end of the period T1, and when the transmission (,) is received, each ID7, ~7m
The timer starts, and after the elapse of delay times t1 to tm, which are set differently for each ID7□ to Tm, the same frequency f is applied to each ID7□ to Tm. Response transmissions (C) to (,) are performed individually.

Therefore, in each SR2, each ID7, to 7m exists within its own monitoring area 8, depending on the delay time tl-tm from the end of its own transmission until it receives response transmissions (C) to (,). It is possible to detect whether the

Note that the transmission (a) has a period T0 and a predetermined time.

It is only necessary to configure timers corresponding to each one in the CTES, and use these to simultaneously give a transmission command to each SR2.

Further, the same effect can be obtained even if the delay times t1 to tm are determined based on the start time of transmission (&).

Figure 4 shows the appearance of SR2, (A) is a plan view, (B
) is a side view, and has the form of a functional telephone, and is equipped with a handset 11, dial keys 12, and a group of function keys 13 for various memory dials, as well as a display 14 such as a liquid crystal display, and It is equipped with a group of keys 5 for transmitting and receiving data to and from the CTES, and a display 14 is used to display a telephone display and a display based on data transmission and reception, and an antenna 16 for transmitting and receiving electromagnetic waves is provided at the upper part of the back side.
is the provision.

In addition, the SR2 can be used as a function phone, and
It has a built-in electromagnetic wave transmitting section, a receiving section, a related control section, etc., and transmits and receives data to and from the CTES using a specific audio frequency signal outside the communication band.

FIG. 1 is a block diagram of the SR2 shown in FIG.
21, 222, receiving section (hereinafter referred to as RX) 23□, 232,
and telephone circuits (hereinafter referred to as ``locations''), which are roughly divided into 24,
CNT21 is a processor such as a microprocessor (
Hereinafter, CPU) 211 is the center, fixed memory (hereinafter referred to as ROM) 212, variable memory (hereinafter referred to as RAM) 21
3. Interface (hereinafter referred to as I/F) 214 to 217
are arranged around the periphery, and these are connected by a bus bar, and the I/
From F'214, TX220,22. RX 23 and the selector (hereinafter referred to as 5EL) 25 are sent out, and depending on the I/F 217, the RX 23
1.232 and sends out control signals for these, while the I/F 215 which has a transmitting and receiving function has a modulator/demodulator (hereinafter referred to as MDM) 26 and a high frequency P-wave filter (hereinafter referred to as HPF) 27. Telephone line 2B from PBX4 is connected via I/F216,
Key group (hereinafter referred to as KG) 13 and display unit (hereinafter referred to as DP)
) 14 is connected, and for DP14,
A display signal is also provided from the.

In addition, the holder 24 is a low-frequency P-wave device (hereinafter referred to as
It is connected to the telephone line 2B via the LPF 29, and can freely make and receive calls through the phone 2B, regardless of data transmission and reception by the MDM 26 via the HPF 27.

TX22□, 22. are frequency synthesizers (hereinafter referred to as FSY) 2214, 221 . , modulator (hereinafter referred to as MO
D) 2221, 2222, and a power amplification stage (hereinafter referred to as PA) 2231, 2232 having a predetermined bandwidth, and FSY 221 according to the control of CNT21.
1, 221□ are determined, and MOD
Intermittent modulation is performed at 2221.222m, and the PA
5EL25 after being amplified by 2331 and 2332
In addition, either one of the transmission outputs is selected by the response of the 5EL 25 under the control of the CNT 21, or both outputs are mixed, and then transmitted through the antenna multiplexer (hereinafter referred to as MPX) 30. It is transmitted from the antenna 16 as an electromagnetic wave.

On the other hand, RX 23□, 2 cards are band pass filters (hereinafter referred to as BPF) for noise removal 231□, 231, high frequency amplification stage (hereinafter referred to as HFA) 2311, 2322, mixer (
Hereinafter, MIX) 233□, 233. l, F for local oscillation
SY 2341.234g, intermediate frequency amplification stage (hereinafter referred to as I
FA) 235□, 2352, level selection circuit (hereinafter referred to as LSE) that blocks noise components by passing only signals above a specified level 2360, 236. l, demodulator (hereinafter,
DEM) 2374, 2372, waveform shaper (hereinafter referred to as WF) 238. .

2382, automatic gain control circuit (hereinafter referred to as AGC) consisting of a detector and time constant circuit, etc. 239□, 2392, level detection circuit using window comparator etc. (hereinafter referred to as L)
DT) 2400 and 2402, respectively, and FSY 2341.2 corresponding to the control of CNT21.
The reception frequency is determined by the generation frequency of 34a, and the CNT
21, TX22. ．． 222 is off when transmitting, and on at other times (
Hereinafter, from the received input from MPX 30 via GT) 31, only desired frequency components are extracted at BPF 2310.231□, amplified by HFA 2320.2322, and mixed into MIX 233□.

After converting to intermediate frequency at 2332, HFA23
5.

235, and LSE2 using a comparator etc.
364,236. After extracting signal components of a specified level or higher, DEMs 2371 and 2372 perform detection, and WFs 2381 and 2382 perform waveform shaping and conversion into a pulse train, after which they are given to the CNT 21 as a reception output.

In addition, a reset signal is sent from CNT21 in response to each pulse confirmation of the received output, and WF2381, 23
It is used to reset the integrating circuit within 8 degrees.

In contrast to the above, the CPU 211 in the CNT 21 is RO
Execute the instruction in M212 and save the necessary data to RAM
Control operations are performed while accessing 213, and M
In response to the command from CTE5 via DM26 and I/F215, TX221.22+ is set to the transmitting state, and the transmission of FIG. 3 (&) is repeated, and the corresponding ID7□
The response transmission from ~Tm is received by RX23, +232, and each delay time t1~tm is detected by a timer configured in the CPU 211 according to each reception output via RX23, +217, and recognized by this. Save the results to RAM21
3, and then transmitted as recognition data to the CTE 5 via the I/F 215 and MDM 26.

Also, LDT 24G, 240. l is AGC23
9□, the detection output from 2392 is given, and depending on the level at which the carrier wave component of the response transmission indicated by this is detected, the level given is divided into three classes, for example, high, medium, and low, and the given level is detected, In order to send this result to the I/F 217, a detection grade of high, medium, or low is added as a code to the above-mentioned recognition data, and the code is sent to the CTE 5.

Therefore, in CTE5, it can be determined that the rD7 is present within the monitoring area 8 of the SR2 with the highest detection level, according to the recognition data from each SR2 and the detection grade of the level.

However, if there are many ID7□~Tm, a single frequency f
. There is a limit to the number of allocations for the delay times t1 to tm.
For example, different frequencies fl and f2 must be used simultaneously, and for this purpose, TX220.2
22 and RX231, 23)+ are each provided with two systems.

In addition, the CPU 211 responds to the operation of the KG 13 and sets each transmission and reception frequency, and sets and updates each data for control and recognition, and also updates these situations as follows: 1) P
It is to be displayed by I3.

Figure 5 shows the shape of the transmitter/receiver possessed by ID7.
4) is a front view, and (B) is a cutaway side view of the main parts, showing the disc-shaped case 31, the ring 32 that is screwed onto the other side of this, and the surrounding inner surface of this and the case 31. It is composed of a transparent cover 33 and a card 34 held between them, and a back plate 35 that is screwed into the back of the case 31.
A clip 36 is fixed to the back side of the card 34, which makes it easy to attach it to a pocket, etc. The card 34 is made in the shape of a badge as a whole, and information such as affiliation and name can be freely written on the card 34. .

Also, inside the case 31, an integrated circuit 38 mounted on a printed circuit board 37 and a button-shaped glue battery 3 are provided.
9 etc., and an antenna 40 is buried in a ring-shaped groove provided on the outside of the periphery of the case 31.
1, the head of a power switch PS using a lock-type pushbutton switch is exposed.

FIG. 6 is a block diagram of the transceiver shown in FIG. 5,
RX41, TX42 and CN'l''43 are the main components, and RX41 and TX42 are the RX in Figure 1.
23 and TX22 are the same size, RX41 is,
BPF411, HFA412. MIX413. FSY
414. HFA415. LSE416゜08M417
．． WF418. Consisting of AGC419, TX4
2 is FSY421, MOD422. PA423
The CNT43 also has a CPU431 and a ROM43, similar to the CNT21 in FIG.
2. RAM433. It is composed of I/Fs 434 to 437, and accepts reception output from RX 41 and controls RX 41 via I/F 435, and controls 'l'X 42 via I/F 436.

Additionally, the I/F 434 is equipped with a setting device (hereinafter referred to as
ET) 438 is connected, and I/F 437
In this case, each control input of a switch circuit (hereinafter referred to as 5W) 44°45 including a switching element that supplies power to RX41 and TX42 from a battery 39 is connected, and when the power switch PS is turned on, the control inputs are connected. Te CNT
43 starts operating, a timer configured in the CPU 431 causes the 5W4 to start operating according to the transmission cycle T1 of the SR2.
Turn on 4.

In response to receiving the transmission of SR2, the ON/OFF control shown in FIG. 3(b) is performed on the SW 44, while the 5W 45 is controlled to be ON only during the period when the response is transmitted to the TX 42. ing.

Note that the CPU 431 executes instructions in the ROM 432,
Similar to the SR2, control operations are performed while accessing the necessary data to the RAM 433, and the CPU 431
The delay time t1 to tm is regulated by a timer configured inside.

Therefore, the transmission of SR2 is performed using antenna 40, MPX4
6 received by RX41 via WF418 of this
When the reception output from \ is given, a timer by the CPU 431 is started in response to the generation of the same output, and according to the time-up of this timer, a period t shown in FIG. 3 is started. The response transmission is performed by TX42.

Further, the CPU 431 monitors a predetermined specific time using the same timer as described above, and if it cannot receive the transmission from the SR2 during this time, it continuously turns off the SW 44 and turns on the power switch ps again. , when it turns on from off, it initializes in response to the start of voltage application from the battery 39, configures and starts a timer with a constant period T1, and continues S until the timer reaches the time limit.
If W44 is turned on and a reception output is generated during this time, the control returns to the control shown in FIG. 3(b), thereby reducing the consumption of the battery 39 as much as possible.

Therefore, in each monitoring area 8, the one with the highest detection grade can be accurately determined as the area where the ID 7 exists, and the location where each ID 7 exists can be reliably recognized.

However, in FIG. 1, a carrier wave component detection circuit for response transmission may be provided separately, such as LDT 240.

2402 by various threshold circuits, or by using an analog-to-digital converter, etc.;
It is also possible to do this every second time.

In addition, in FIG. 2, each SR2, 1 to 2nj and Cr
F2 may be connected with a dedicated transmission line, each 5R20
, ~2n, can be fixed to the ceiling, wall surface, etc., or buried.The shape shown in Fig. 4 can be selected accordingly, and a digital type can be used as the PBX4, and multiplexing can be performed according to this. The same is true even if the means of conversion is selected, and C
rF2 may be configured υ by a combination of various logic circuits.

In addition, in Figures 1 and 6, FSY2211
.

2212, 421, and amplitude modulation by controlling the MODs 2220, 222□, 422, or both may be used in combination. , 41, and depending on the conditions, each FSY2211, 2
A single frequency crystal oscillator can also be used instead of 21□, 234.1234.1414.421.

Nao, Figure 1) The configuration is TX220, 222 O and R
The number of X231+232 may be increased to 6 or 6, and the CNTs 21 and 43 in FIGS. Same thing 9th, 5th
The shape of the figure can be determined depending on the purpose; for personal use, it can be used as a rectangular badge or card; for military use, it can be in the form of a magnetically attracted plate, etc. , various modifications are possible.

〔Effect of the invention〕

As is clear from the above explanation, according to the present invention, when response transmissions from the same ID are simultaneously received in multiple monitoring areas, it is possible to accurately determine the area where the ID exists, thereby recognizing the locations where various IDs exist. Remarkable effects can be obtained.

[Brief explanation of drawings]

The figures show an embodiment of the present invention. Fig. 1 is a block diagram of the SR, Fig. 2 is a block diagram of the entire configuration, Fig. 3 is a timing chart showing the status of transmission and response transmission, and Fig. 4 is a block diagram of the SR.
Figure 5 shows the appearance of
FIG. 6 is a block diagram of the transmitter-receiver shown in FIG. 5. FIG. 6 is a block diagram of the transmitter-receiver shown in FIG. 5. FIG. 2□, ~2nJ...SR (transmitting/receiving terminal), 5...
...CTE (Medium mounting [), 6...MMI (operating device), 7□~1m...ID (individual), 8□1~
8n,... ・Monitoring area, 16.40...
Antenna, 21, 43-...-CNT (control unit)
. 22,. 22. ．． 41...TX (transmission section),
231 r 23 , l+42...RX (receiving section), 239□, 2392...AGC (automatic gain control circuit), 2401.240. ...LDT (level detection circuit), To ...predetermined time, T1 ...
... fixed period, t1-tm ... delay time. Patent author Yamabushi L. Newell Co., Ltd. agent Kazuha Yamakawa (1912 people) Figure 5 (A) (B) Procedural amendment ('7 Entered by the Commissioner of the Intestinal License Agency 4″″ ff1. L student 8
. 1. Indication of the case 1985 on hand Patent application No. W O R 1 Z T 1 3. Person making the amendment Relationship to the case Patent applicant name (name)
(66G) Yamatake Honeywell Co., Ltd.” - Akira - 12 Kuzu no Kuchi 1 sun June 1948 and ten-ku procedure amendment export) 1. Indication of the case 1986 Patent Application No. 72729 2. Invention Name individual recognition reception method 3, relationship with the case of the person making the amendment Patent Applicant name (name) (666) Yamatake Honeywell Co., Ltd. 5, subject of amendment (11 Specification page 7 line 6 "fo" r f (2) Correct "28" on page 9, line 18 of the same book to "24". (3) Correct r 2331, 2332 J on page 10, line 6 of the same book.
r 223. ．． Corrected to 2231 J. (4) Correct "fo" in line 8 on page 13 of the same book to "f'." (5) "41" on page 19, line 20 of the same book is corrected to "42". (6) "42" in line 1 on page 20 of the same book is corrected to "41". that's all

Claims (1)

[Claims] Electromagnetic waves of a specific frequency are repeatedly transmitted to a monitoring area of a specific range for a predetermined period of time, and when each of the plurality of individuals receives the electromagnetic waves with their respective receivers, After the delay time elapses, each individual transmits an electromagnetic wave of the same frequency as a response to each individual using a transmitter provided in each individual, and upon reception of the response transmission, each individual detects the delay time, and according to the detection result, the monitoring is performed. In the method of recognizing the presence of each individual in the area, the carrier wave component of the response transmission is detected, the level of the detection output is divided into grades, and the individual is detected within the monitoring area according to the detected grade. An individual recognition reception method characterized by determining whether or not it exists.