JPS62228958A - Recognizing and receiving method for individual body - Google Patents

Abstract

PURPOSE:To prevent a battery from being consumed unnecessary by turning on and off the power source of a receiver according to the entry and exit of an individual into and form a monitor area. CONSTITUTION:Transmitting and receiving terminal equipments (SR) 211-2nl sends electromagnetic waves of specific frequencies repeatedly at a constant period for a specific time according to a command from a center equipment (CTE) 5, and receive answer signals from individual bodies 71-7m which are possessed by the individual in respective rooms 11-1m. The power sources of the individual bodies 71-7m are turned on in synchronism with the fixed period transmission, and at the time the transmission individual bodies 71-7m are turned off. Accordingly, power source of the IDs 71-7m are on-off controlled according to the entry and exit of the individual into and from the respective rooms 11-1m.

Description

[Detailed description of the invention] [Industrial application field] The present invention can be used in offices, research institutes, factories, etc.

The present invention relates to a receiving method on the individual side that is used when recognizing where a moving individual, such as a transport vehicle, is present.

[Conventional technology]

In the past, in order to prevent illegal entry into specific guarded areas, authorized trespassers were given cards, badges, etc. and asked to present these at the entrance.

Alternatively, a method of confirming the authorized person by inserting a card into a card reader, or assigning a specific number, password, etc. to each authorized person and confirming the authorized person by inputting it using a keyboard etc. A commonly used method is to register the person's fingerprint, voiceprint, retinal blood vessel shape, etc. as a pattern, and use photoelectric detection to confirm the person who is allowed to enter. I am aware of this.

On the other hand, in recent years, for the purpose of improving the operating efficiency of each moving individual in offices, research laboratories, factories, etc. and making it easier to confirm the location of the target individual, it has become easier to move each individual within a large room or within the premises. It is possible to grasp the presence of a device from time to time, and to request immediate transmission of necessary information or commands, or in the event of an emergency such as a fire outbreak.

It has become necessary to understand the location of each individual, communicate appropriate instructions, and comprehensively implement countermeasures.

When conventional methods are used, only 1% of individuals can be controlled in and out of fixed areas, resulting in the disadvantage that each individual in a wide area cannot be recognized at all times.

Therefore, as a countermeasure to this problem, a method for recognizing a single individual, which has been filed separately by the applicant, is used to repeatedly transmit electromagnetic waves of a specific frequency to a specific monitoring area for a predetermined period of time, allowing multiple individuals to recognize each individual 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 each delay time is detected individually and the presence of each individual within a monitoring area is recognized based on the detection results.

[Problems to be Solved by the Invention] However, since the transmitter/receiver included in each individual device generally uses battery power, in order to prevent excessive consumption of the transmitter/receiver, the power source of the receiver must be turned on in synchronization with a fixed period of transmission. It is conceivable to turn it on, but if this method is adopted, there will be a problem in which the battery will be wasted needlessly when one individual leaves the monitoring area.

[Means for solving problems]

In order to solve the above-mentioned problem, the present invention uses the following means)
It is configured as follows.

That is, in the above-described method, the power of the receiver is turned on in synchronization with the constant periodic transmission.

When this transmission cannot be received for a certain period of time, the power of the receiver is turned off, and in response to this power-on operation, the power of the receiver is turned on for a certain period of time at maximum, and the transmission of a certain period is received. It is assumed that the ON state will be resumed in synchronization with this transmission in response to the transmission.

[Effect]

Therefore, if one individual leaves the monitoring area.

If the power is turned off completely after a certain period of time), the receiver enters a hibernation state, and if you turn on the power when you re-enter the monitoring area, the receiver power will be turned on continuously for a maximum of a certain period of time. 9. During this period, transmissions at a certain period are always received,
From then on, the power is turned on normally in synchronization with a fixed cycle.

〔Example〕

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.
Transmitting/receiving terminal (hereinafter referred to as 5R) having the function of transmitting and receiving electromagnetic waves from 1 to 1n 2o to 2st to 2n1 to 2n
t is arranged, these also have the function as a telephone,
Demultiplexer for signal multiplexing (below).

FDV) 3tt to 3xt to 3n are accommodated in a private branch exchange (hereinafter referred to as PBX) 4 via 1 to 3nt.

Solid equipment such as electronic computers (
Hereinafter, it is also connected to CTK)S, and to CTE5,
Operation equipment such as keyboards, cathode ray tube displays, printers, etc.
(hereinafter referred to as MMI) 5 is included.

In addition, each of 5R2tx to 2nt repeatedly transmits electromagnetic waves of a specific frequency for a predetermined period of time in response to a command from CTK5, while each individual in each room 11 to 1n transmits an individual (hereinafter referred to as , ID) 71~7m and possesses a badge that has the function of transmitting and receiving electromagnetic waves, and with this,
When receiving electromagnetic waves from 5R211~2nt, each I
After passing a delay time that is set differently every D71~7m, each responds by transmitting an electromagnetic wave of the same frequency, and each 5R2o~2nL receives this response transmission, and each delay time is set individually. According to the detected results, each ID7
It is designed to detect the presence of t~7m.

However, for each 5R2tt to 2nt, the effective range of transmission and reception is determined, and this is monitored area 8! ! ~81L~8n1
~8nt are arranged adjacent to each other and overlapping each other, and each SR:lt ~2nt corresponds to each detection result.
5. Since the CrF2 adds its own address number and sends it to the CTK5, it comprehensively recognizes which ID exists in which part of which room and displays it on the MMI6, or periodically It is designed to be printed out.

FIG. 1 is a timing chart showing the transmission status of each SR2 and the response transmission status of each ID7t to ID7m, (4)
In this case, SR2 repeats transmission at a specific frequency fo as a constant period T1 of 1, for example, 5SeO, and for a predetermined period To, as shown in (&), and each ID7t to γ
In m, the power supply Φ) of the receiving section is turned on in synchronization with one period T1 from immediately before the transmission (,) is performed to immediately after the end of the predetermined time To, and when the transmission (-) is received, Each ID7t~ based on the point when this is completed
The 7m timer starts, and after the delay time tI"'-tm, which is set differently for each ID7+ to 7m, has elapsed, each sends a response using the same frequency f (e) to (e)
This is to be done individually.

Therefore, in %SR2, each ID 7t to 7m exists within its own monitoring area 8 according to the delay time t1 to tm from the end of its own transmission to the time of response transmission (c) to (e) t-reception. It is possible to detect whether the

Figure (B) shows a case where one of the ID7s leaves the monitoring area and then enters the monitoring area again.
When the transmission <-> cannot be received for a specific time T, (b
), the receiver enters the hibernation state with the power turned off, but after entering the monitoring area at time t. If you turn on the power at N.

In response to this, the power supply (b) is turned on continuously for a maximum period T, /, and if the transmission (a) is received during this period, the power supply starts turning on again in synchronization with the period Tt, and (A) Response transmission will also resume as shown below.

Therefore, in ID7, unnecessary consumption of the battery is prevented by turning off the power, and when entering the monitoring area, it is always possible to receive transmissions of the fixed period TI, and from this point on, the period T is transmitted. ! The power is turned on in synchronization with the transmission of , and the response transmission is also performed accurately.

Furthermore, the period T1 and the predetermined time TO of transmission (,) are as follows.

It is sufficient to configure timers corresponding to each during CTES, and to simultaneously give a transmission command to each SR2, and the specific time T1 and the maximum on-period Tζ are set according to each ID.
A corresponding timer and judgment control circuit may be provided in the transmitter/receiver, and the power-on control may be performed using these.

However, each delay time t! ~tm can also be determined based on each start time of transmission (,). or.

The maximum on-period T r may be arbitrarily set to be equal to or longer than the SR transmission cycle TI .

FIG. 3 shows the appearance of SR2, and is (A) a tl plan view.

(B) is a side view and has the form of a single-function telephone, with a handset 11. dial key 12, and.

It is equipped with a group of function keys 13 such as various memory dials, and a display 14 such as a liquid crystal display. and.

Equipped with a group of keys 15 for data transmission and reception with CrF2 1 Display 1
4, a telephone display and a display based on data transmission and reception are performed.An antenna 16 for transmitting and receiving magnetic waves is provided at the upper part of the back side.

In addition, SR2 can be used as a single-function phone, and
It has a built-in magnetic wave transmitting section, a receiving section, a related control section, etc., and transmits and receives data to and from the CTaE5 using a specific audio frequency signal outside the communication band.

FIG. 4 is a block diagram of the SR2, and the control section (hereinafter referred to as
CNT) 21, transmitting section (hereinafter referred to as TX) 22+.

222, receiving unit (hereinafter referred to as RX) 23s, 23:,
and.

Telephone circuit (hereinafter roughly divided into 124)
21, processors such as microprocessors (hereinafter referred to as C
PU) 211 is the center, and the fixed memory (hereinafter referred to as

ROM) 212, variable memory (hereinafter referred to as ttAM) 2
13. Interface (hereinafter referred to as I/'F) 214
~217 are placed around the entire periphery, and these are connected to the bus bar.
9. From I/F214, I to TX22ri, 222
It sends a control signal and an i&l control signal to the selector (hereinafter referred to as 5EL) 25, and depending on the I/F 217, the RX 231.

2 receiving outputs from 232 and controlling them 1
While transmitting the G, the I has all the sending and receiving functions.
A telephone line 28 from the PBX 4 is connected to the I/F 215 via a modulator/demodulator (hereinafter referred to as MDM) 26 and a high-frequency F frequency filter (hereinafter referred to as HPF) 27, and at I/'F 216, a key group (hereinafter referred to as KG) 13 and display device (hereinafter referred to as D
P)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 'rJL communication line 1M28 via the LPF'29, and is capable of making and receiving calls through the station28, regardless of data transmission and reception by the MDM26 via the HPF'27.

TX22+, 222 are each a frequency synthesizer (
Hereinafter, FSY) 2211, 2212, modulator (hereinafter, MOD) 222+, 2222, and 79r
Power amplification stage (hereinafter referred to as PA) 223+ with constant bandwidth
, 2232, each generation frequency of FSY221s and 221x is determined according to the control of CNT21, and intermittent modulation is performed in MOD2221, 2222, amplified by PA233+-2332, and then sent to 5EL25 for transmission output and binding. In addition, depending on the response of the 5EL 25 under the control of the CNT 21, one of the transmission outputs is selected, or the two outputs are mixed, and then the antenna multiplexer (hereinafter referred to as M
PX, +30'& through, antenna 16, f! aiu
sent as l.

On the other hand, RX231 +23z includes band P-wave filters (hereinafter referred to as BPFs) 231+ and 2312 for noise removal, high frequency amplification stages (hereinafter referred to as HFAs) 2321 and 2322, mixers (
Below, MIX) 233+, 2332, F for local excavation
SY234t-2342, intermediate frequency amplification stage (hereinafter referred to as
I FA, l 235+ , 235g , level selection circuits (hereinafter referred to as LSE) 2361 , 2362 that pass only signals above a specified level and block all noise components.

Demodulator (hereinafter referred to as DEM) 2371.2372. Waveform shaper (hereinafter referred to as WF) 2 using an amplifier circuit, an integrating circuit, etc.
38+, 238z, automatic gain control circuit (hereinafter referred to as AGC)
)2391.2392, each of which is configured by C
FSY234t, 2342 under the control of NT21
The reception frequency is determined by the generation frequency of , and according to the control of CNT21, TX221.222 is turned off during transmission and turned on at other times (hereinafter referred to as a gate circuit).

Receiving input from MPX 30 via GT) 31 is in progress.

Only desired frequency components are extracted by BPF231t and 231z, and amplified by HFA2321.2322.

After converting to intermediate frequency in MIX233+, 2332, it is further amplified by IFA235+, 2352, and LSE236t, 23 using a comparator etc.
After extracting the signal components above the specified level using 6z,
EM237+.

Detection is performed at 237z, and WF2381, 238
After waveform shaping and conversion into a pulse train, the signal is given to the CNT 21 as a reception output.

Note that the CNT 21 sends out a reset signal in response to each pulse confirmation of the received output, and the WF 238s.

It is used to reset the integration circuit in 2382.

Regarding the above, CPU211f'i, R in CNT21
Execute the instructions in OM212 and send the required data to RA
Control operations are performed while accessing M213.

In response to a command from the CTE 5 via the MDM 26 and the I/F 215, the TX 22t and 22z are placed in a t-transmission state, and the transmission shown in FIG. ,2
32, the delay time ts"tm is detected by a timer configured in the CPU 211 according to each reception output via the I/F 217, and the recognized result is temporarily stored in the RAM 213, and then /F215 and M
It is transmitted as recognition data to CTE5 via DM26.

However, if there are many ID7+ to 7m, a single frequency f
, there is a limit to the number of allocations for the delay time t+-tm.
For example, f! , / 2 mutually different frequencies shall be used simultaneously; for this purpose, TX22
+, 222, and RX231.232 are provided with two systems each.

Further, the CPU 211 responds to the operation of the KG 13.

Set each transmission and reception frequency, set and update control and recognition hook data, and check these conditions on the D.
It is to be displayed by P14.

Figure 5 shows the shape of the transmitter/receiver possessed by ID7.
A is a front view, and (B) is a side view with a main part cut away.

A disc-shaped case 31, a ring 32 screwed onto the front surface of the case 31. It consists of a transparent cover 33 and a card 34 which are held between the peripheral inner surface of the case 31 and the case 31, and a back plate 35 that is screwed into the back of the case 31, and a clip 36 on the back side of the back plate 35. is fixed, making it easy to lock into a pocket etc. 1. 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 transmitter/receiver (N machine) shown in FIG. 5. RX41, TX42 and CNT43 are the main components. RX41 is BPF411
, HFA412, MIX413, FSY41
4, HFA415, LSE416, DEM
417, WF418, and AGC419, and TX42 is composed of FSY421, MOD422°PA423, and CNT43.
Similarly to CNT21 in Fig. 4, CPU431, R
OM432.

RAM 433 and I/Fs 434 to 437), and accepts reception output from RX4i and controls RX41 via I/F435, and controls TX42 via I/F436.

However, the I/F 434 has a delay time t1~trn
A setting device (hereinafter referred to as 5ET) 43B using a bottle-shaped plug or the like is connected in order to set which one to use and to set the receiving frequency.

The I/F 437 is connected to the control inputs of switch circuits (hereinafter referred to as 5W) 44 and 45 including switching elements that supply power to RX41 and TX42 from the battery 39, respectively. When the CNT 43 starts operating in response to turning on the switch PS, the CPU 43
According to the timer configured in 1? , SR2 transmission period T
In accordance with I, 55w44 is turned on as shown in FIG. 1(f), and as the transmission of SR2 is received, the on/off control of FIG. 1(b) is performed on 5w44, while
Control is performed such that the 5W45 is turned on only during the period in which the response is transmitted.

Note that, similar to the SR2, the CPU 431 executes instructions in the ROM 432 and performs control operations while accessing the necessary data iRAM 433.
The delay time tt""' is determined by the timer configured in 431.
tm regulations.

Therefore, the transmission of SR2 is performed using antenna 40° MPX4.
6' to RX41, and its WF418
When the received output from 4 is given, the timer by the CPU 431 is started in response to the generation of the same output, and according to this time-up, the period t shown in FIG. 1 (4) is started.
o response transmission is performed by TX42.

The CPU 431 monitors a specific time T using the same timer as described above, and if it cannot receive all transmissions from the SR2 during this time, it continuously turns off the 5w 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 for a certain period T, and waits until it time-amps or receives a transmission signal from the SR. The 5W44 is kept on until this disappears, and if a reception output occurs during this time, the control returns to the control shown in FIG. 1 (4), thereby reducing the consumption of the battery 39 as much as possible.

Therefore, if ID7 leaves monitoring area 8, battery 3
9 is prevented from being exhausted, and if a new entry is made into the monitoring area 8, the RX 41 will definitely receive the transmission from SR2 during the maximum power-on period of T1.9. Thereafter, since the power of RX4i is turned on in synchronization with the constant transmission period TI, response transmission is performed accurately in accordance with this, and ID7 can be reliably detected in each SR2.

However, the specific time T8 can be determined according to the conditions.
The same effect can be obtained even if the on period according to the operation of turning on the Wt source is set longer than one cycle T1.

In addition, in Fig. 2, each SR2+t~2nt and CTE5 may be connected by a dedicated transmission path.
Fix 2t+ to 2nt to the ceiling, wall, etc., or.

The same is true even if the PBX is buried, and the shape shown in Fig. 3 can be selected accordingly, and the same can be said if a digital type is used as the PBX4 and the multiplexing means is selected accordingly. It may also be configured by a combination of logic circuits.

In addition, in Figures 4 and 6, FSY221
+, 2212.421 to perform frequency modulation, and MOD2221, 2222, 422 to perform amplitude modulation, or both may be used in combination.
The configuration of each FS can be selected depending on one condition.
Y221 + , 221□, 234+ , 2342.
A single frequency crystal oscillator can also be used instead of the 414.421.

The configuration shown in Figure 4 includes TX22t, 22g and R.
X23+, 23□ may be in large numbers, or each year may be -, and CNT21 in FIGS. 4 and 6.

43 is not particularly used for CPU211, 431'ft: It is the same even if a combination of counters and various logic circuits, etc. is used.The shape shown in FIG. In the case of a vehicle, it can be made into a badge or a card, and in the case of a vehicle, it can be modified in various ways, such as a magnetically attracted plate.

〔Effect of the invention〕

As is clear from the above explanation, according to the present invention, battery consumption is reduced as much as possible, and SR is reliably activated after power is turned on.
From now on, response transmissions are performed in response to transmissions from the SR, so a remarkable effect can be obtained in individual recognition for various purposes.

[Brief explanation of drawings]

The figures show an embodiment of the present invention, Fig. 1 is a timing chart showing the status of transmission and response transmission, Fig. 2 is a block diagram of the entire configuration, Fig. 3 shows the external appearance of the SR, and (A) is a timing chart showing the status of transmission and response transmission. FIG. 4 is a block diagram of the SR, and FIG. 5 shows the ID transmission/reception L'Uk. Figure 6 is a front view, (B) is a cutaway side view of main parts, and Figure 6 is a front view.
FIG. 2 is a block diagram of the transceiver shown in the figure. 2nd ~ 2nt...SR (transmitting/receiving terminal), 5...
...CTE (solid device), 6...MMI (operating device), 11~7m... (1 individual), 8+t~9n
t...Monitoring area, 16.40...Antenna,
21.43...CNT (control unit). 22+, 222.41...TX (transmission section),
2:L. 232.42...RX (receiving section), 30.46・M
PX (multiplexer), 31...GT (gate circuit), 39...battery, 44.45...SW (
switch circuit), TO...predetermined time, TI...
・・Constant period, 1+~tm ・・・・Delay time, T,
...Specific time, TI ...Maximum power-on period.

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 an area, the power of the receiver is turned on in synchronization with the transmission at a certain period, and when the transmission cannot be received for a specific time, the power of the receiver is turned on. OFF, and in response to the power-on operation, the power of the receiver is turned on for a certain period of time at maximum, and in response to receiving the transmission of the certain period, the on state is resumed in synchronization with the transmission. An individual recognition reception method characterized by: