JP2001197045A - Communication system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a system which can specify and easily transmit information without depending upon the area division of frequencies. SOLUTION: This is a communication system which features a communication whose transmission source is specified by receiving a time information radio wave, generating a signal rising in prescribed timing about the reference time of the time information radio wave, and sending a signal according to the prescribed timing as a parameter.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a communication system, and more particularly, to a technique using time information radio waves.

[0002]

2. Description of the Related Art Conventionally, for example, when specific information is transmitted wirelessly, it is customary to change the frequency band individually or to add information to a transmission bit form to specify the source and the contents of the information. However, it is troublesome to distinguish information, and there is a limit to changing the frequency.

[0003]

SUMMARY OF THE INVENTION An object of the present invention is to provide a system capable of specifying information and easily communicating without relying on frequency division.

[0004]

The present invention takes in a time information radio wave, generates a signal that rises at a predetermined timing with respect to a reference time of the time information radio wave, and transmits the signal using the predetermined timing as a parameter. The communication system is characterized in that the communication is performed with the transmission source specified.

[0005] The time information radio wave may be a public radio wave, for example, in which the time is put on a radio wave (for example, Japan Standard Time Information Radio: JJY). This time information radio wave is received anywhere in Japan. It is possible. Then, when the information of the transmission source is specified using the timing (for example, a fixed delay time) from the reference time of the time information radio wave as a parameter, and this is communicated by radio waves or the like (wired also possible) and received by the reception source, If the receiver also detects the time radio wave information and recognizes the timing of the time radio wave from the reference time,
The transmission source can be specified by the timing. For example, it can be separated in units of 1/100 second from the reference time,
If the reference time is, for example, 00/100 seconds, the communication target A, such as A for 1/100 seconds, B for 2/100 seconds, C for 3/100 seconds, and so on. .., B, C,... Can be specified using the timing from the reference time as a parameter. The parameter is not limited to the delay time from the reference time, but also includes a case where the parameter coincides with the reference time, and the timing from the reference time has such a meaning.

In addition to using the timing from the reference time as a parameter, for example, the width of a signal rising at a predetermined timing from the reference time or a predetermined form (for example, a specific bit form) of the signal is also used as a parameter. In addition, the types of signals that can be specified by communication can be increased. The frequency can also be added as a parameter to the above parameters. Further, a signal with the same parameter set is simultaneously transmitted in a plurality of different frequency bands, and on the condition that all or at least two or more of those transmissions are simultaneously received on the receiving side, the signal of the parameter is transmitted. It can also be valid. This makes it easier to avoid erroneous recognition due to noise.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to embodiments shown in the drawings. FIG. 1 shows an outline of the system.

On the transmitting side (reporting side), the standard time is received in S1. For example, Japan's identification number of the World Standard Time Signaling Bureau is called JJY, and in Japan 40 kHz (long wave)
The time signal radio wave that has flown in has started operation. This is JJ
It is called Y communication, and this time signal can be freely received anywhere. In S1, the time signal radio wave is received, and a predetermined timing (time) from the received standard time is monitored by a timer (S2), and the timer monitors (sets).
Send data at the right time. For example, if the time signal is 10
If the unit is 1/0 second, for example, "10
Data is transmitted by radio waves (wireless) or the like after 100 seconds t seconds from "00/0 seconds".

On the other hand, the receiving side also receives the standard time by the time signal radio wave at R1, and the radio wave transmitted from the transmission source (the parameter of transmission at 100 minutes t seconds after the reference time “00/100 seconds”) is set. Received data) (R2). When the receiving side receives the data transmission, it also receives the standard time, so that the received data is a signal of what timing with respect to the reference time (eg, “00/100 seconds”), for example, how much from the reference time Analyze whether the signal is late. Now, let the signal sent from S3 be R
2 and analyze the data with R3 (the standard time at the time of data reception is fetched from the time signal radio wave received by the receiving side).

Here, if it is determined that the signal is received with a delay of 100 minutes t seconds from the reference time "00/100 seconds", (R
4) The sender can be determined to be S3. If the signal of the transmission source is, for example, a signal indicating some abnormality, a signal can be output to the alarm device on the receiving side to issue an alarm (R4). In other words, the source can be specified using the reception timing (reception time) of the time signal as a parameter without analyzing the frequency or looking at the signal pulse.

[0011] The communication time from the transmitting side to the receiving side by radio waves or the like is, for example, about 100,000 seconds, which is negligible compared to the minimum unit (for example, 1/100 seconds) of a time signal radio wave. In practice, there is no problem if the transmitting and receiving sides simultaneously receive the time signal radio waves at the same time. However, when the communication time cannot be ignored compared to the minimum unit of the time signal radio wave, a correction process such as reducing the communication time as a correction value on the receiving side can be added. The same applies to the following examples.

Further, as a specific system configuration example,
A case in which the present invention is applied to an alarm device such as a control panel for monitoring an abnormality in a premises or a nurse call system (mainly an abnormality monitoring system) in a hospital or the like will be described. Note that, in order to avoid complexity, the description will be made mainly on the assumption of a nurse call system.

In FIG. 2, the portable side is a signal (data) transmitting side system 10 and the display side is a receiving side system 20. JJY on the mobile side
The reception front end 11 is provided as time signal radio wave reception means, the transmission side CPU 12 functions as control means such as parameter setting means (an encoder), and the transmission section 14 for wirelessly transmitting data to the display side is provided. Exists. The panic switch 13 is provided with a wireless type or a wired type as the first data transmitting means.
A signal is transmitted to the 12 side. For example, it is assumed that the patient or the care receiver individually has the panic switch 13. The means for receiving the signal from the panic switch 13 is omitted.

Now, when a signal is supplied from the panic switch 13 to the CPU 12 in order to notify any abnormality, the CPU 12 transmits the time signal received by the JJY reception front end 11 for identification setting of the signal from the panic switch 13. The standard time information is fetched from the radio wave and identified as a signal received from the panic switch 13 using the timing (delay time t) from the reference time (for example, “second 00” with 1/100 second as the minimum unit) as a parameter. Imparts properties. If the delay time t1 from the reference time is set for the purpose of imparting the discrimination, the CPU 12 sets the reference time ("") given by the time signal radio based on its own timekeeping function or the timekeeping function by another timer. A transmission (transmission) command is issued at the timing of the delay time t1 from "second 00").
A signal (data) is transmitted from the transmission unit 14 to the display side with a delay of t1 from the reference time.

The display side (reception side system 20) also includes JJ
The Y receiving front end 21 is provided as a time signal radio wave receiving means, and a receiving unit 24 for receiving a signal (radio wave or the like) from the portable side (transmitting side) is provided. Further, the CPU 22 on the receiving side functions as control means such as means for analyzing the parameters of the received signal (in other words, a decoder). The panic alarm device 23 is connected to the CPU 22 via a predetermined interface (not shown) as an output unit such as an alarm unit, and the display unit 25 is connected as a display unit (this is also one of the output units).

When the receiving section 24 receives a communication signal from the transmitting side, the CPU 22 specifies the receiving time at which the signal was received at the receiving section 24 based on the time signal received by the JJY receiving front end 21. That is, the receiving unit 24
Is detected by referring to the time signal radio wave. Here, the CPU 22 determines that the reception time of the signal is after t1 (for example, "02" seconds of 100 minutes after "0.02 seconds") from the reference time (such as "00/100 seconds"). Then, the source (signal source: panic switch 13 in this example) is specified. Here, when t1 = 0, the delay time is zero, and "00/100
Transmission and reception of a signal are performed in "seconds".

In the case of a nurse call, the panic switch 1
Since the pressing of 3 indicates some kind of calling or an abnormal situation, the CPU 22 activates the panic alarm 23 to call attention, and the panic switch 1 on the display unit 25.
The information indicating the source of the call or abnormal situation, such as turning on or blinking the number of the bed or patient corresponding to 3, is specified. As a result, it is possible to know, for example, that a call or an abnormal situation has occurred at the nurse station and where or from which the call originated.

In the case of an alarm device for a control panel (monitoring an abnormality in a premises) or the like, some specific panic switch 13 is used.
Or, based on the output of a signal indicating an abnormality at a specific location, the CPU
12 sets the identification of each signal using the (delay) timing from the reference time of the time signal as a parameter, and transmits a signal at that timing. When the CPU 22 on the receiving side captures the time signal, the reception time of the signal is received. Judge,
The above (delay) timing t is analyzed (decoding of the parameter), and its transmission source is specified. In other words, it is possible to specify the location where the abnormality has occurred, to issue a warning, and to display the location of the abnormality (the number in this example) on the display unit 25.

FIG. 3 conceptually shows the identification setting of the signal on the transmitting side. Assuming that the time information is received by a time signal radio wave, the time information is received, for example, after receiving "00" at T: M, S: 01, 02, 03,. Minute (S + 1) seconds 00, 01, 02...

Here, a plurality of transmission sources (X1, X2, X3
··· X100-n, n = 0 to 99) In the identification setting, for example, as shown in FIG. 4, 00/100 seconds of the reference time (T, M, and S of the hour, minute, and second are optional). Good) to 100
The delay timing (delay time) after 01 second of the minute (hereinafter simply referred to as "01") is added to the source X1, the delay timing of 02 to the source X2, and the delay timing of 03 to X3, respectively. Similarly, for any X100-n, 100 minutes t
If a delay time of seconds is given, different individual identities (parameters) can be set for at least 100 sources (sources). For example, in a nurse call, identification settings can be made for 100 patients or beds, and for an abnormal alarm in a premises, 100 locations can be set. Note that FIG.
In the transmission / reception (communication) between the panic switch 13 and the CPU 12, a known method (for example, wireless or wired identification) for identifying which of the plurality of panic switches 13 is pressed is described.
Or the above panic switch 1
The above-described system using the time signal radio wave of the present invention can also be set up for transmission and reception between the CPU 3 and the CPU 12.

When the transmission signal is generated using the delay timing from the reference time as a parameter, as shown in FIG. 5A, the delay timing as a parameter coincides with the rising point (starting point, starting point) of the signal. If you do
Any of the case where it matches the middle of the signal as in (b) and the case where it matches the falling point (end point, end) of the signal as in (c) can be adopted.

As shown in FIG. 6, when a switch button such as a panic switch shown in FIG. 2, for example, is pressed, a button-on signal is input to the transmission-side system, and the button-on signal is transmitted to the CPU. It is temporarily stored in a register or a temporary storage means (such as a flag) provided separately. And
For example, as a parameter to be added to the button-on signal, if a delay timing t from “00” of 100 minutes per second (hereinafter the same) at the reference time is preset to “05”, for example, 100 minutes of the predetermined time "00" to "0"
A transmission signal is output at a timing after “5”, and this is received by the receiving side system as described above, and the reception time is determined to be “05” delayed from “00”,
It is recognized as a specific button signal.

Each parameter to be assigned to each transmission source such as a plurality of buttons is stored in advance in a storage means such as a ROM (for example, a reference table for defining the correspondence between each transmission source and identification information). A storage table is provided), and an identification setting means such as a CPU reads identification information of a specific transmission source from the storage means, and generates a signal at the read delay timing as described above. In the receiving system, a storage means such as a storage table for associating the delay timing (identification information) of the received signal with the signal content such as the type of the signal is provided, and the CPU compares the reception time with the storage table and the like. Thus, a signal such as a specific alarm can be output.

As another embodiment, as shown in FIGS. 7A to 7C, the transmission timing (delay timing from the reference time ("100-n" with reference to "00": n = 1)
00-1) as the first parameter, and the width W of the signal generated at that timing as the second parameter, it is also possible to transmit a signal combining these parameters. Thus, even if the number of signals that can be distinguished by the delay timing is 100, a large number of signals far exceeding 100 can be identified by weighting the identification information of the signal width W. In the signal transmitted from the transmission side, the reception time information t and the identification information of the signal width W are decoded on the reception side, and the transmission source is specified. The decoding of the signal width W is performed by decoding (analysis) means such as a CPU. For example, the signal width W is determined by measuring the signal ON time from the time of reception, and the reception time information (delay timing from the reference time) is determined. ) Can be detected based on the time signal radio wave in the same manner as described above.

FIG. 8 shows still another embodiment. In this example, the parameter of the delay timing t from the reference time (first
), The bit form of the signal is further used as a parameter (second). The signal in this bit form uses a plurality of bits such as 4 bits. In this example, the delay timing t from the reference time “00” (in this case, “0”)
1)), for example, ON with “01”, “02”
ON at "03", OFF at "03", ON at "04" at "110"
1 "bit signal (identification information). This is weighted to the above-mentioned delay timing t, so that, for example, bit information from “0001” to “1111” (“0000”
15), and the delay timing t is set to “0”.
By multiplying 100 ways of “0” to “99”, 1500 kinds of signals can be distinguished, and if the above-mentioned identification information of the signal width W is weighted, an extremely large number of signals can be distinguished. The bit signal is generated mainly by the CPU on the transmission side, and the CPU on the reception side determines the bit form and the reception time.

FIG. 9 shows still another example in which a signal of the first frequency λ1 is generated with a delay of 100 minutes t seconds from the reference time “00” (eg, “02/100 seconds”). The signal of the second frequency (frequency different from the first frequency) λ2 is supplied at the same timing as above, for example, “0/100
2 seconds "and send them simultaneously from the sender to the receiver. When both (two) of these signals are received simultaneously by the receiving side system (O through the AND circuit 30 in the figure)
When the UT signal is output), it is recognized that the signal at the delay timing t (for example, “02”) has been received for the first time. In this way, erroneous reception due to noise such as disturbance or other factors can be eliminated or suppressed.

When transmitting a signal from the transmitting side to the receiving side using the delay timing from the reference time as a parameter,
In addition to the delay timing, a signal is generated with a frequency as a second parameter, and the signal is transmitted as a signal having two parameters of a delay timing and a frequency, or a plurality of parameters further including a signal width, a signal bit form, and the like. As described above, the reception side system decodes the delay timing using the time signal radio wave and also determines the frequency and other parameters, thereby making it possible to obtain a signal in which a large number of identification information is set. The frequency is, for example, a plurality of parameters having a plurality of different frequency bands.

In the above description, the application to a nurse call, an alarm device of a control panel, and the like has been exemplified. In addition, for example, keyless entry, sightseeing bus passenger confirmation, outing management of the elderly (management of the nursing home), etc. The present invention can be applied to various communication systems for various applications. For example, when using in a keyless entry system,
The user possesses, for example, a portable terminal (a small transmitter (one incorporated in a key, one incorporated in a card-shaped member, or another appropriate transmitting system)) as a transmission system, and the time information ( Signal width as required
A signal using bit form and frequency as parameters is output wirelessly. On the other hand, identification information (for example, an ID code or the like) such as time information identified and set by the above parameters is stored on the key side (unlocking device side), and the parameter (identification information) of the signal received by the unlocking device side is stored. ) Matches the one stored beforehand, the system can be unlocked.

Also, for example, in a boarding confirmation system for a sightseeing bus, a passenger has a portable terminal (for example, a badge type, a clip type or the like worn or carried), and the portable terminal device is used as a transmitting side system. Each signal (e.g., continuously outputting (transmitting) every 100 seconds t seconds) is transmitted to a receiving system such as a bus at a different delay timing for each passenger from the reference time of the time signal radio wave,
The receiving system receives this. If the signal is a weak signal that can be received only at a certain short distance such as inside a bus, if there is no vehicle such as a bus or a person who should be in a predetermined place, the above signal will not be received, so check the boarding of the bus Etc. can be used.

Further, the outing management of the elderly (management of the nursing home) can be grasped as a system similar to the confirmation of boarding of a sightseeing bus.

[Brief description of the drawings]

FIG. 1 is a diagram illustrating the concept of the present invention.

FIG. 2 is a block diagram showing a more specific embodiment of the present invention.

FIG. 3 is a view for explaining the concept of time information using a time signal radio wave.

FIG. 4 is a diagram showing an example of signal identification setting using the time information.

FIG. 5 is a view for explaining a relationship between delay timing as a parameter and signal generation.

FIG. 6 is a diagram showing an example of the relationship between the output of a signal such as a push button and the generation of a signal with time information.

FIG. 7 is a diagram showing an example in which a signal width is added as a parameter.

FIG. 8 is a diagram showing an example in which a bit form of a signal is added as a parameter.

FIG. 9 is a diagram showing an example of transmitting and receiving signals of the same time information at different frequencies.

[Description of Signs] 10: Transmission system 11, 21: JJY reception front end 20: Receiving system 25: Display unit

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) H04Q 9/00 311 H04B 7/26 E (72) Inventor Hideo Aoyama 2-8-8 Higashijima-cho, Ichinomiya-shi, Aichi Stock F-term in corporate cornet (reference) 4C341 LL10 5C087 AA10 AA12 AA19 BB03 BB20 BB74 CC51 DD03 DD29 DD33 EE14 EE18 FF01 FF05 FF17 GG09 GG11 GG18 GG24 GG30 GG38 GG57 GG70 GG83 5K012 BB04 GG04 5K012 DB01 EA06 EB08 EB12 EB13 GA02 5K067 AA34 AA41 BB21 BB27 CC04 DD28 DD30 EE02 EE10 EE71 FF18 GG03

Claims (8)

[Claims] 1. A communication whose source is specified by taking in a time information radio wave, generating a signal that rises at a predetermined timing with respect to a reference time of the time information radio wave, and transmitting the signal using the predetermined timing as a parameter. A communication system characterized by performing: 2. A time information radio wave is fetched, a signal which rises at a predetermined timing with respect to a reference time of the time information radio wave is generated with a predetermined width, and a signal is transmitted using the predetermined timing and the predetermined width as parameters. By
A communication system for performing communication with a specified transmission source. 3. A time information radio wave is fetched, a signal which rises at a predetermined timing with respect to a reference time of the time information radio wave is generated in a predetermined form, and a signal is transmitted using the predetermined timing and the predetermined form as parameters. A communication system characterized by performing communication with a specified transmission source. 4. The predetermined form as the parameter includes that a bit-like arrangement of signals of the same or different widths generated at a plurality of predetermined timings is grasped as one specific form. A communication system according to claim 1. 5. A signal having the same parameter set,
5. A signal according to any one of claims 1 to 4, wherein a signal of the parameter is validated on condition that all the transmissions or at least two or more of the transmissions are simultaneously received on a plurality of frequency bands different from each other, and that the transmission is simultaneously received on a receiving side. A communication system as described. 6. A transmitting-side time radio wave capturing means for receiving a time information radio wave at a transmitting side, and a transmitting means for transmitting a signal at the predetermined time with respect to a reference time of the time information radio as at least one parameter. Receiving time signal radio wave receiving means for receiving the time signal radio wave on the receiving side; receiving means for receiving the transmitted signal; and determining the reception timing of the time signal radio wave from the reference time in the received signal. And a signal discriminating means for specifying the signal. 7. A transmitting-side time radio wave capturing means for receiving a time information radio wave on a transmitting side, a detecting means for detecting that transmission is necessary, and after detecting that transmission is required by the detecting means, Transmitting means for transmitting a signal at the predetermined timing with respect to the reference time of the time information radio wave as at least one parameter, a receiving time radio wave receiving means for receiving the time information radio wave on the receiving side, A communication system comprising: a receiving unit that receives a signal; and a signal determining unit that determines a reception timing of the received signal from a reference time of the time information radio wave to specify the signal. 8. A signal generated at a predetermined timing with respect to a reference time of the time information radio wave, at least one of signal forms such as a width, a number, and a bit arrangement is added as a parameter, and a signal specified by the parameter is added. 8. The communication system according to claim 6, wherein the signal is transmitted from the transmitting unit, the signal is received by the receiving unit, and the signal is determined by the signal determining unit determining the parameter.