JP3029353B2 - Remote monitoring and control device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a remote monitoring and control device in which a control station serving as a master station performs data communication with a plurality of controlled stations and monitors an abnormal state. The present invention relates to a remote monitoring control device provided with a technology for performing data communication equally with n controlled stations and providing a timely output of a station abnormality.

[0002]

2. Description of the Related Art Conventionally, this kind of remote monitoring and control apparatus is composed of a control station 1 as a main station and n controlled stations 2 ₁ , 2 ₂ ,... As shown in FIG. This control station 1
Next m (m ≦ n) number of transceiver 3 _1, 3 _2, ... and has a, these transceiver 3 _1, 3 _2, ... is the n controlled station 2 _1, 2 _2, between ... and Data communication is performed under the following conditions.

(A) First, the transmitting and receiving unit of the control station ₁ needs to perform data communication uniformly while circulating with all the controlled stations 21 to _2n.
When 1, the time required to perform all of the control station 2 ₁ to 2 _n and data communication to be t _1, transceiver time according to the number m of the transceiver is increased (data communication period)
Becomes shorter. For example _{m = 2 → t 1/2} , m = 3 → t 1 /
_{3, m = 4 → t 1} /4, ... become shorter as of.

[0004] (b) the m transceiver 3 ₁ to 3 _m when the completion of the data communication of all of the control station 2 ₁ to 2 _n and 1 round, the m transceiver 3 ₁ to 3 _m The controlled stations are sequentially selected in the order of the station numbers from the transmitting / receiving section that has completed the data communication first, and the next second data communication is performed.

[0005] (c) Further, the transmitting and receiving unit 3 ₁ to the control station 1
3 _m performs data communication with the same controlled station, and when an error occurs consecutively an arbitrary number of times (for example, four times), determines that the controlled station is abnormal and outputs a station error. It is in. Hereinafter, a conventional remote monitoring control device will be described with reference to FIGS.
This will be specifically described with reference to FIG.

[0006] Figure 15, A control station 1, B, 3 pieces of transceiver consisting of C-based 3 ₁ to 3 ₃ 2 _1-15 of the controlled station
2 ₁₅ (the sake of convenience, it is represented by the numeral 15 in FIG. 15) is a diagram showing a communication sequence when performing the data communication. However, the transceiver 3 ₁ to 3 _3, it is assumed that the data communication and a controlled station 2 ₁ to 2 ₁₅ by the data communication time as follows. That is, 1 station ... 5 seconds, 2 stations ... 3 seconds, 3 stations ...
2 seconds, 4 stations ... 4 seconds, 5 stations ... 10 seconds, 6 stations ... 3 seconds, 7 stations ...
5 seconds, 8 stations ... 6 seconds, 9 stations ... 7 seconds, 10 stations ... 5 seconds, 11 stations ... 3 seconds, 12 stations ... 4 seconds, 13 stations ... 2 seconds, 14 stations ... 5 seconds,
15 stations ... 4 seconds.

As a result, the three transmission / reception units 3 _{1 to} 3 ₃ and 1
Between the five of the control station 2 ₁ to 2 _15, the communication order as follows. First, 1 Megume is, A system transceiver 3 ₁ 1 station (controlled station 2 _1), B-based transceiver 3 ₂ 2 stations (controlled station ₂ 2), C-based transceiver 3 ₃ 3 stations While selecting the (controlled station 2 _3), the short station most communication time among these 1 station to 3 stations are the control station 2 ₃ 3 stations, C-based transceiver 3 ₃
Data communication ends first. Therefore, data communication by selecting according C system transceiver 3 ₃ immediately 4 stations (the controlled station 2 _4). Hereinafter, the controlled stations are sequentially selected in the manner described above. At the end of the first round of data communication,
Since A system transceiver 3 ₁ As shown completed earliest data communication, select the first one station of the second cycle, subsequently, C-based transceiver unit selects the two stations so ends the data communication . Hereinafter, controlled stations are sequentially selected in the same manner.

[0008] As a result, three transceiver 3 ₁ to 3 _3,
The controlled station with the station number order as shown in FIG. 16 2 ₁ to 2
₁₅ (stations 1 to 15) are sequentially selected while making a round. Subsequently, data communication is repeated from the station with the first station number. Next, FIG. 17, each controlled station 2 ₁ of each Tour th 12
A to C transmission / reception units 3 for .about.2 ₁₅ (stations 1 to 15)
It is a diagram illustrating a _{1-3 third} selection relationship.

Therefore, from the description of the operation in FIGS.
It is clear that the conditions of (a) and (b) are satisfied. That is, each A~C based transceiver 3 ₁ to 3 ₃ are all of the control station 2 ₁ to 2
₁₅ it is carried out evenly data communication with, and each transceiver 3 ₁ to 3 ₃ performs data communication by selecting the station number order, and transmitting and receiving unit which has finished earlier data communication for each Tour eye Are sequentially selected from the station with the first station number in the next round to perform data communication.

[0010]

In the remote monitoring control apparatus as described above, a problem arises with respect to the above-mentioned condition (c), that is, the determination of a station abnormality. Now, for example, it is assumed that the control station 2 _1, which corresponds to one station first is in an abnormal state. At this time, when it has a transceiver 3 ₁ to 3 ₃ A~C system, the controlled station 2 ₁ if abnormal three consecutive times, and outputs a station malfunction. This will output the station abnormality of the control station 2 ₁ at transceiver 3 ₂ B system is three round of Figure 15.

[0011] However, as is clear from FIG. 17, the control station 2 _1, which corresponds to one station th, first round ... A system, the second round ...
A system, a 3 round ... B system, the transceiver 3 ₃ C system has not yet carried out the control station 2 ₁ and data communication. Therefore, 3
Although a station error is output at the round, it includes a content that cannot be determined to be truly a station error.

Further, as another conventional device, there is to be stored as a table as shown in FIG. 18 the data reception result of the receiving portion 3 ₁ to 3 ₃ and the controlled station 2 ₁ to 2 _15. That, A through C each transceiver 3 ₁ to 3 ₃ registers the "1" when it is determined that the abnormal performing data communication with the control station, the "0" when performing the normal data communication sign up. Therefore, the registration area of all the whole of the transmitting and receiving portion 3 ₁ to 3 ₃ from the registration contents of the table "1"
In such a case, the station may be determined to be abnormal and a station abnormality may be output.

[0013] However, as is clear from FIG. 17, for all of the transmitting and receiving unit 3 ₁ to 3 ₃ are determined to be abnormal from the registration contents of the table, all of A~C system 5 round from the start of communication generating a first station abnormality when communicating with transceiver 3 ₁ to 3 ₃ data. As a result, the occurrence time of the station abnormality is not uniform, and the station abnormality cannot be output in a timely manner.

The present invention has been made in view of the above circumstances, and outputs a station abnormality in a timely manner by equalizing the occurrence time of the station abnormality, and easily determines a system abnormality in addition to the station abnormality. It is an object of the present invention to provide a remote monitoring control device for outputting.

[0015]

According to a first aspect of the present invention, there is provided an apparatus according to a first aspect of the present invention, wherein a line path can be independently switched corresponding to m transmitting / receiving sections and each of the transmitting / receiving sections. The transmission / reception unit of the control station comprises a control station having a line selection circuit and n (n ≧ m) controlled stations. In the remote monitoring control device that performs data communication equally with the controlled station of

The control station, when each of the transmission / reception units has performed m-th data communication with all the controlled stations,
A remote monitoring control device provided with communication line selection control means for selectively turning on a line of the line selection circuit so that each controlled station always performs data communication with all of the transmission / reception units.

According to a second aspect of the present invention, when each of the transmitting and receiving units performs m-th past data communication with all of the controlled stations as the control station, each of the controlled stations transmits the data. Communication line selection control means for selectively turning on the line path of the line selection circuit so as to always perform data communication with all transmission / reception units;

[0018] The apparatus is provided corresponding to each of the controlled stations,
A setting value storing means for setting the number corresponding to the number m or the processing content for each controlled station of the transmitting and receiving unit, the abnormality of the control station at the time of data communication between the respective transmitting and receiving unit is the controlled station and each station corresponding counter for count can and has been detected, wherein the setting value storing with each transceiver is the total controlled station
Setting of the m-th cycle set in the means or each control station unit
Before performing any number of rounds of data communication based on the number
Comparing the count value of the counter corresponding to each station with the set value of the set value storage means, outputting a station error of the corresponding controlled station when the values match, and judging normal when the values do not match. The output control means is provided.

Next, a third aspect of the present invention is the control station, wherein each of the transmitting and receiving units performs the m-th round of data communication with all of the controlled stations in the past. Communication line selection control means for selectively turning on the line path of the line selection circuit so that the station always performs data communication with the all transmission / reception units;

A set value storage means provided corresponding to each of the transmitting / receiving sections and setting the number n of the controlled stations; and a transmitting / receiving section provided for data communication between the transmitting / receiving section and the controlled station.
Past p between each system corresponding counter <br/> to count can that detects an abnormality of the system, each transceiver is of the total controlled station
(Any cruiser number eyes) + m Tour th said when the conducted data communication for each system compares the count value of the corresponding counter and the set value of the setting value storing means matched when appropriate transceiver system system abnormalities And a system abnormality output control unit having an output unit. Further, the invention corresponding to claim 4 is the same as the control station,

When each of the transmission / reception units has performed data communication with the controlled stations for the past m-th cycle, the line selection is performed such that the controlled stations always perform data communication with the all transmission / reception units. Communication line selection control means for selectively turning on a circuit line of the circuit;

A plurality of setting value storage means for storing different setting values in a stepwise manner in advance;
Feed is during data communication with the controlled station and the transceiver unit
Each system corresponding mosquitoes to count can that detects an abnormality of the receiver system
And counter, wherein the set count value of the plurality of the systems corresponding counters when performing past p (any cruiser eye number) + m Tour th data communication with each transceiver is the total controlled station A system abnormality output control means having means for outputting a stepwise system abnormality state in accordance with the set value when the value coincides with the stepwise set value of the value storage means.

[0023]

Therefore, according to the first aspect of the present invention, when the above-mentioned means are taken, the m transmission / reception units perform data communication with n controlled stations over the past m rounds. The station can always perform data communication with all the transmission / reception units, so that uniform data communication can be reliably performed, and required data processing can be easily performed.

Next, according to a second aspect of the present invention, when, for example, m is previously set in the set value storage means, and m transmission / reception units and n controlled stations perform data communication, each of the transmission / reception units performs data communication. Since the control station always performs data communication with all transmitting / receiving units in the m-th past cycle, the counter always counts the station error signal m times in the last 3 cycles when a controlled station is abnormal. Therefore, by comparing the count value with the set value of the set value storage means, a true station abnormality can always be determined in the third past cycle, and the station abnormality can be output in a timely manner.

Further, according to a third aspect of the present invention, after setting n in the set value storage means in advance, the m transmitting / receiving sections and n
When performing data communication with the number of the control station, there transceiver
Since parts system of the abnormality becomes past p (any cruiser eye number) + m Tour th transceiver system is abnormal by the data communication is to perform all of the control station and data communications, the system corresponding counter
Count value n becomes the data can be output reliably abnormal transceiver system abnormalities.

Further, according to a fourth aspect of the present invention, after a plurality of set value storage means previously store different set values in a stepwise manner, data is transferred between the m transmitting / receiving units and the n controlled stations. When communication is performed, each time an abnormality occurs in a certain transmission / reception unit system, the corresponding system counter counts the abnormality in the transmission / reception unit system. Then, the count value is compared with a stepwise set value different from the count value.
It is possible to output the degree of abnormality of the transmission / reception unit system, and to take appropriate abnormality countermeasures.

[0027]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram showing an embodiment of the apparatus of the present invention. The remote monitor control device includes a control station 10 as a master station, for example, NTT dedicated line to the control station 10, n pieces of the controlled station 20 ₁ to 20 which is connected via a private line, etc.
_n .

[0029] The control station 10 includes a process output unit 11 having a memory function, n-number of the controlled station 20 ₁ to 20 _n
Selection of circuit paths between the m-number (e.g., m = 3) and the reception control / transceiver 12a~12c of these reception control / transceiver 11a~11c and the controlled station 20 ₁ to 20 _n to perform data communication with the It comprises a line selecting circuit 13 for connection, a communication line selection determining means 14, a communication line control means 15, and a station abnormality / system abnormality output means 16.

The transmission / reception control / transmission / reception units 12a to 12c
The various communication protocols {e.g. no procedure for performing data communication with the control station 10 and the control station _{20 1 ~20 n, HDLC (High} level Data Link Control procedu
re), BSC (Binary Synchronous Control), etc.
Communication speed, text type, communication control code used,
Data length, presence or absence of modem or type of modem, communication line type (NTT dedicated line, private line, or branch line), communication procedure (polling method or always cyclic method)
It has a data transmission / reception function such as for example, a diagnosis when an abnormality occurs, and a data communication means by retry.

The line selection circuit 13 includes ON / OFF line paths 1a to 1n corresponding to the transmission / reception control / transmission / reception section 12a.
a is connected, the on / off circuit paths 1b to nb are connected corresponding to the transmission / reception control / transmission / reception unit 12b, and the on / off circuit paths 1c to n corresponding to the transmission / reception control / transmission / reception unit 12c.
nc are connected, and each transmission / reception control / transmission / reception unit 12a
12c are connected to any of the controlled stations 2 via the on / off circuit.
0 _{1 to} 20 _n are also connected.

[0032] The communication line selection determining means 14, reception control / reception unit 12a~12c are n controlled station 20 ₁
To 20 _n , and, in principle, perform data communication in the order of station numbers, and complete the data communication first for each cycle.
Selecting the station of the first station number from ~11c but when visited by the number m of the transmission and reception control / reception unit this time, the transceiver unit 12a~12c communicates always with each of the control station 20 ₁ to 20 _n data The station selection is determined as described above, and the transmission / reception control /
It has a function of transmitting to the transmission / reception units 12a to 12c and the communication line control means 15.

The communication line control means 15 executes switching selection control of each ON / OFF line of the line selection circuit 13 based on the station selection decision from the communication line selection decision means 14. when selecting the controlled station 20 ₁ based on station selection decision from the communication line selection determining unit 14 turns on the on-off circuit paths 1a, controls to turn off on-off circuit paths 2a, the na .

The communication line control means 15 includes, for example, when a certain transmission / reception control / transmission / reception unit is performing data communication with a controlled station via an existing on / off line, the other transmission / reception control / transmission / reception unit 2 or more on-off circuit paths 1a respect interlock function has, moreover, for example, in the same of the control station 20 ₁ that can not be selected, 1b, 1c is prevented from simultaneously turned on Te. This interlock function may be provided in the line selection circuit 16 instead of the communication line control means 15. Further, the communication line control means 15 is provided with a circuit for knowing whether or not the same controlled station is selected at the same time, or which of the controlled stations is selected from the transmission / reception control / transmission / reception units 12a to 12c. That is, the communication line control means 15 determines whether the same controlled station is selected at the same time.
Is provided.

The station abnormality / system abnormality output means 16 has a function of outputting an abnormality when all of the transmission / reception control / transmission / reception units 12a to 12c determine an abnormality by data communication. Among them, the station abnormality (controlled station abnormality) is determined to be abnormal when the transmission / reception control / transmission / reception units 12a to 12c continuously detect abnormality with the same controlled station. Is output. On the other hand, the system abnormality (transceiver abnormal) is transmitting and receiving unit 12a or 12b, but were all controlled stations 20 ₁ to 20 _n and data communications 12c, all not be normally data communications, and other When the transmission / reception units 12b, 12c, and 12a can normally perform data communication, the transmission / reception units 12a, 12b, and 12c determine that the transmission / reception unit is abnormal and output a system abnormality.

FIG. 2 is a diagram showing another embodiment of the remote monitoring control apparatus. The difference between this apparatus and FIG. 1 is that the rotary switches 13a, 13
b, a line selecting circuit 13 'using 13c is provided;
And the function of the communication line control means 15 shown in FIG. 1 is provided in the transmission / reception units 12a 'to 12c'.

The transmission / reception control / transmission / reception unit 12
a 'to 12c', the transmitting / receiving unit 12a 'includes a rotary switch 13a and ON / OFF circuit paths 1a, 1b,.
nc, n controlled stations 20 ₁ , 20 ₂ ,.
_n, and the transmission / reception unit 12b '
3b and on-off circuit paths 2a, 2b, ..., n number of the control station 20 ₁ via the nc, 20 _2, ..., are connected to 20 _n, transmission and reception unit 12c 'is rotary switch 13c and the on-off line road 3a, 3b, ..., n number of the control station 20 _1, 20 ₂ via the nc, ..., is adapted to be connected to 20 _n. In addition, the communication line selection determining means 14 and the station abnormality / system abnormality output means 16 have the same functions as those in FIG. Further, this station abnormality / system abnormality output means 16
Specifically, it has a configuration as shown in FIGS.

FIG. 3 is a block diagram showing a station abnormality judging function for judging the abnormality of the controlled station. In order to output the abnormality of the station for each controlled station, for example, the number of transmitting / receiving units is set to a predetermined value. Setting value storage means 30 ₁ to 30 _n
If the station that emits when an abnormality is detected in the station in the control station units
A station abnormality counter 31 ₁ to 31 _n as each station corresponding counter for counting the abnormal signal, the determination means 32 ₁ to 32 _n determines correspondence presence of both values is compared with these set values and the count value, a station abnormal output unit 33 ₁ ~ 33 _n for outputting a station anomaly when both values match is provided.

Next, FIG. 4 is a block diagram showing a system abnormality determination function of determining system abnormality of the transmitting and receiving unit 12 a to 12 c, setting for outputting the abnormality of the system transmitting and receiving unit 12a similar to FIG. 3 Set value storage means 40 ₁ to 40 for storing values
_n , system abnormality occurrence counters 41 _{1 to} 41 _n as counters corresponding to the respective systems, determination means 42 _{1 to} 42 _n, and system abnormality output means 43 ₁ for outputting a system abnormality based on the determination result.
To 43 _n are provided.

In FIG. 3, if the set value storage means for storing the set value for outputting the station abnormality is common,
As shown in FIG. 5, n controlled stations 20 ₁ , 20 ₂ ,.
20 _n has a configuration common to the set value storage means 30. In FIG. 4, if the values of the set value storage means for outputting the system abnormality are common, 12a as shown in FIG.
It has the configuration shown in the set value storage means 40 for storing the set values for outputting the system abnormalities of ~ 12c. Next, the operation of the device configured as described above will be described.

First, the basic operation of the apparatus of the present invention is similar to that of the conventional apparatus in that each of the transmitting / receiving sections 12a to 12c includes n controlled stations 2.
0 ₁ , 20 ₂ ,..., 20 _n to perform data communication, in principle, perform data communication in the order of station numbers,
Transmission / reception control / transmission / reception unit 12a that has finished data communication first
The data communication is performed sequentially from .about.12c. At this time, the data communication is performed based on the fact that the station abnormality is output in a timely manner, and furthermore, it is to determine not only the station abnormality but also the system abnormality.

[0042] Hereinafter, specifically by the number m = 3 in the transceiver unit of the control station 10 as shown in FIG. 1, and the control station 20 ₁ to 20 _n number of stations n = 15 the first station 15 Represented by a bureau,
In the same manner as described above, the data communication time is set at 1 station 5 seconds, 2 stations 3 seconds, 3 stations 2 seconds, 4 stations 4 seconds, 5 stations 10 seconds, 6 stations 3 seconds, 7 stations 5 seconds 8 stations 6 seconds, 9 stations 7 seconds, 10 stations 5 seconds, 11 stations 3 seconds, 12 stations 4 seconds, 13 stations 2 seconds
Assuming that 14 stations are 5 seconds and 15 stations are 4 seconds, data communication is performed in the station order as shown in FIGS.

That is, the communication line selection determining means 14
As shown in FIG. 7, in the first round, each of the transmitting / receiving sections 12a to 12a
c is the controlled station 20 ₁ (1 station), 20 ₂ (2 stations), 20
₃ (3 stations) is selected, and the communication time of the third station is 2 seconds, which is the shortest. Therefore, the transmission / reception unit 12c selects the controlled station 20 ₄ (4 stations) immediately after the communication of the 3 stations is completed. After the end of the first data communication, the transmission / reception unit 12a ends the data communication earliest. Therefore, in the related art, the controlled station 20 ₁ (one station), which is the first station, is continuously selected. In the device, since the transmitting / receiving unit 12a has already selected one station,
In the second round, two stations are selected, and instead, one station is selected so as to be assigned to the transmission / reception unit 12c that has finished the second data communication. The assignment is determined for the second and third stations based on the same idea. In any event, when visited by the number m of the transmission and reception control / transceiver, each transceiver 12a~12c is always <br/> chosen to data communication and each of the control station 201 to 20n, transceiver it 12a to 12c and the communication line control means 15.

Here, the communication line control means 15 selectively turns on each on / off line of the line selection circuit 13 based on the station selection decision from the communication line selection decision means 14. As a result, Then, the controlled stations are sequentially selected in the station order according to the arrow as shown in FIG. 8, and the data communication is performed.

Accordingly, when the station selection state of FIG. 7 is tabulated, it becomes as shown in FIG. That is, the transmitting / receiving unit 12
a~12c is sequentially selects the controlled station according to the station selection order of the communication line control unit 15, but the first round in the ~ 3 round of data communication termination phase, the control station 20 ₁ to 20 ₁₅ (1 station To 15 stations) and all the transmission / reception units 12a to 12c (A to
Data communication is performed with C), and at the end of each of the fourth and subsequent rounds, a similar communication result is obtained for each of the past three rounds.

This means that the transmission / reception units 12a to 12
c When you Tour all of the control station 20 ₁ to 20 _n m, it is always communicating data of each controlled station 20 ₁ to 20 _n and once. In other words, transceiver 12a~12c have done evenly data communications for all of the control station 20 ₁ to 20 _n. Also, the station selection order is substantially a station number order, determines the allocation as the last three round each transceiver 12a~12c always performs each of the control station 20 ₁ to 20 _n and data communications.

Next, the station abnormality of the controlled station and the transmission / reception unit 12a
A description will be given of the system abnormalities No. to 12c. m transmission / reception units 1
Since 2a~12c performs all the controlled station 20 ₁ to 20 _n and the data communication m Tour eye as shown in FIG. 9, the preset value storage means 30 ₁ to 30 _n as shown in FIG. 3, for example set value "m (= 3)" stores, and each controlled station 20 ₁
Upon detection of the station anomalies to 20 _n, counted in station abnormality counter 31 ₁ to 31 _n, to "0" and initializes the counter detects normal. For example when it becomes abnormal and continuous with the past m times, so it is determined that abnormality station at decision means 32 ₁ to 32 _n, the station error output means 33 ₁ ~ 33 _n
Can output a station error.

On the other hand, the system abnormality of the transmission / reception units 12a to 12c is determined by the station abnormality / system abnormality output unit 16 or each transmission / reception unit 12c.
with a built-in whole or corresponding parts in FIG. 4 in A～12c, the setting value storing means 40 ₁ to 40 _3, for example n
Number of corresponding to the number of the control station 20 ₁ to 20 _n to set a n.

[0049] Then, to start the data communication, then the data communication result is abnormal, the system abnormality counter 41 ₁ or 41 _2, 41 ₃ to the appropriate the system abnormality signal
The counter is initialized to "0" when the counter is detected as normal. As a result, the transmission / reception units 12a to 12
c is for n-number of the control station 20 ₁ ~20 _n, p + m Tour eye has passed, a number n of the count value of the counter 41 _{1-41 3} at that time, for example, the control station 20 ₁ to 20 _n when in the judgment unit 42 ₁ or 42 _2, 42 ₃ is judged to system abnormality, it outputs a system error output means 43 ₁ or 43 _2, 43 ₃ from the system abnormality. It should be noted that the system abnormality is not output only when the number of controlled stations coincides with the number n, but is output, for example, when there is a system abnormality with a certain ratio or more. For example, as shown in FIG.
a, 30b, and 30c are provided, the set value storage means 30a has a value of 50% of the number of controlled stations, the set value storage means 30b has an 80% value, and the set value storage means 30c has all numerical values of the controlled stations. set when set value storing means 30a by performing more than 50% and the data communication speed controlled station and system and abnormal frequency counter 41 ₁ is matched, the system error output means 43 _1a "system abnormalities "Possible" is output. Similarly, when the number of controlled stations reaches 80% or more, "system error is likely to be high" is output from the system error output means _431b , and all stations of the controlled stations are output. as outputs "system abnormality" from the if abnormal system alarm output unit 43 _1c, there is a method of outputting a fine abnormal state.

[0050] Therefore, according to the configuration of the above-described embodiment, an abnormality of the transmitting and receiving unit 12a~12c control station 10, determines an abnormality separating each of the control station 20 ₁ to 20 _n of the abnormality and respectively Output, it is possible to take immediate measures for the location where an abnormality has occurred.

[0051] Moreover, the station abnormal output, compared reception number m, whereas it outputs all of the control station 20 ₁ to 20 _n stations abnormality judgment and station abnormality of the m cruiser eyes, the conventional device, Regardless of which controlled station the transmitting / receiving unit is performing data communication with, the station outputs a station error in the m-th round in the past, but contains the content that is not a true station error, and lacks the accuracy of the error judgment. There is a problem.
If there is an abnormality in a controlled station at each round, a method is also considered in which the corresponding area is set to “1” and a station abnormality is output when an abnormality of the controlled station is determined in all the transmitting / receiving sections. However, at this time, it is necessary to read and compare the contents of the table after each transmitter / receiver performs data communication with the controlled station.
If the decision circuit becomes complicated and it is necessary to perform data transmission and reception in a short time, the number of transmission / reception units must be increased. This tends to be increasingly complex and large.

In this case, the contents of the area corresponding to a certain controlled station in all the transmitting and receiving units need to be "1". Is not uniform, so for example, a station error is output by chance at the latest m-th round, or m
When a considerable number of rounds are reached after the round, a station abnormality may be output, whereby the station abnormality may be considerably delayed or not output in a timely manner.

In this respect, in the apparatus of the present invention, the transmitting / receiving section can reliably perform data communication with each controlled station in the number of rounds corresponding to the number of transmitting / receiving sections, and can output a station abnormality at an early stage. Station output can be output in a timely manner.

In the above embodiment, the setting value storage means 3
_{0 1 ~30 n, 40 1 ~40} 3 is that a base of setting the predetermined value uniformly, generally the control station 20 ₁ -
20 _n has a priority according to the processing content of the station,
Instead of outputting a station error with a uniform judgment, a set value is given according to the processing content for each controlled station, and a detailed operation can be achieved such that a station error is output when the set value is reached. . For example, when m = 6, a set value may be set as a multiple of the set value m, or an arbitrary value may be set as the set value as described below. Set value Station abnormal output timing 6 Abnormal output when all rounds of the m system are still abnormal. 12 Abnormal output when all rounds of the 2 m system are abnormal. 18 Rounds of all 18 m systems. Abnormal output even if it is abnormal. Abnormal output if all four rounds of 24 m system are abnormal. Abnormal output if all even 0.5 rounds of 3 m system are abnormal. 7 m Abnormal output in case of abnormal even after all of the system 1.2 rounds. Abnormal output in case of abnormal even after 1.4 rounds of all 8 m systems. Output when the system is also abnormal. Abnormal output when 1.7 rounds the entire 10 m system. Abnormal output when the system is abnormal even after 1.9 rounds the entire 11 m system.

The present invention is not limited to the above embodiment. For example, the control station 10 and the controlled stations 20 ₁ , 20
_2, ... is a of the connection between the control station 1 as shown in FIG. 11
0 and the controlled stations 20 ₁ , 20 ₂ ,... May be connected by independent communication lines 50 ₁ , 50 ₂ ,.
Alternatively, as shown in FIG. 12, for example the control station 20 ₁ to 20 ₃
There When in neighboring villages or predetermined tube when compared with other control station, and shared line from the control station 10 to the relay station 51, independently controlled station 20 ₁ to a subsequent line from the relay station 51 it may be configured to connect to 20 _3. Either way,
The form of the communication line for transmitting and receiving data between the control station 10 and the controlled stations 20 ₁ , 20 ₂ ,.

[0056] Regarding the communication system, each transceiver 12a~12c is assumed to perform the cyclically data communications with all of the control station 20 ₁ to 20 _n. For example, as shown in FIG. 6 The data communication may be restarted at an arbitrary time interval between the p-th round and the next (p + 1) round, or the year-month-day-hour-minute-
Data communication may be performed at regular intervals, for example, every 1 minute or every 10 minutes according to a calendar of seconds.

If the number of communication systems is large in order to shorten the data communication time, if the station abnormality cannot be communicated with all the m-system transmission / reception units, instead of updating the output, an arbitrary value of m or less is used. When exceeding, a station error may be output. More specifically, FIG. 13 having a configuration similar to that of FIG. 10 may be provided, in which step-by-step setting values are provided in advance, and an abnormality is output in detail according to the abnormal state of the station.

Further, the control station 10 and the controlled stations 20 ₁ , 2
The communication procedure with O ₂ ,... May be a polling method or a constantly cyclic method. In this polling method, the control station transmits a text to be called, and the controlled station responds to the text corresponding to the text to be called.
This is a method of transmitting a response signal corresponding thereto to the control station. On the other hand, in the case of the constantly cyclic method, text is circulated from the controlled station to the control station and transmission is repeated. Therefore, when the control station selects a communication line with the controlled station, the control station discards the text to be circulated and performs data processing. In addition, the present invention can be implemented with various modifications without departing from the scope of the invention.

[0059]

As described above, according to the present invention, the following various effects can be obtained.

First, according to the first aspect of the present invention, when data communication is performed between m transmitting / receiving sections and n controlled stations over m rounds, each controlled station always performs data communication with all transmitting / receiving sections. It is possible to perform uniform data communication without fail, and to quickly detect an abnormal state.

Next, according to the second aspect of the present invention, the m transmission / reception units always perform data communication with all the transmission / reception units in the past m-th round, so that when a certain controlled station is abnormal, the true transmission is always performed in the past third round. The station abnormality can be determined, and the station abnormality can be output in a timely manner.

Further, according to a third aspect of the present invention, when an abnormality occurs in a certain system, the transmission / reception unit of the abnormal system performs data communication with all controlled stations by data communication of the past p (arbitrary number of cycles) + m-th cycle. Therefore, it is possible to reliably output the system abnormality of the abnormal transmission / reception unit.

Further, according to a fourth aspect of the present invention, there is provided a system abnormality occurrence counter which counts system abnormalities each time a certain system abnormality occurs after storing different set values stepwise. By comparing with the above, it is possible to output the degree of abnormality of the system in accordance with a predetermined set value, and to take appropriate countermeasures against the abnormality.

[Brief description of the drawings]

FIG. 1 is a block diagram showing one embodiment of a remote monitoring control device according to the present invention.

FIG. 2 is an improved block diagram of the transmission / reception unit and the line selection circuit of FIG. 1;

FIG. 3 is a diagram showing a specific configuration relating to the station abnormality output control means, in particular, of the station abnormality / system abnormality output control means of FIGS. 1 and 2;

FIG. 4 is a diagram showing a specific configuration of a system abnormality output control unit, particularly, of the station abnormality / system abnormality output control unit of FIGS. 1 and 2;

FIG. 5 is a diagram showing another specific configuration of the station abnormality output control means.

FIG. 6 is a diagram showing another specific configuration of the system abnormal output control means.

FIG. 7 is a diagram showing a selection order of controlled stations corresponding to each round in each transmission / reception unit.

FIG. 8 is a diagram showing the selection order of controlled stations corresponding to each round by arrows.

FIG. 9 is a diagram showing a selection state of each transmission / reception unit for a controlled station.

FIG. 10 is a specific block diagram for outputting a system abnormality according to the degree of the system abnormality for each transmission / reception unit.

FIG. 11 is a diagram showing a connection state between a control station and a controlled station.

FIG. 12 is a diagram showing a connection state between a control station and a controlled station.

FIG. 13 is a specific block diagram for outputting a system abnormality having a configuration similar to that of FIG. 10;

FIG. 14 is a diagram showing a conventional connection relationship between a control station and a controlled station.

FIG. 15 is a diagram showing a selection order of controlled stations corresponding to each round in each conventional transmission / reception unit.

FIG. 16 is a diagram showing, with arrows, a conventional control station selection order corresponding to each round.

FIG. 17 is a diagram showing a conventional selection state of each transmission / reception unit for a controlled station.

FIG. 18 is a table in which the presence or absence of an abnormality of each controlled station in the related art is tabulated.

[Explanation of symbols]

Reference numeral 10: control station, 12a, 12 'to 12c, 12c': transmission / reception control / transmission / reception unit, 13, 13 ': line selection circuit, 1
4 communication line selection determining means, 15 communication line control means
16 ... station abnormality, the abnormal-output controller, 20 ₁ to 20 _n ...
The controlled _{station, 30 1 ~30 n, 30a,} 30b, 30c,
40 ₁ to 40 _n ... set value storage means, 31 _{1 to} 31 _n ... station abnormality occurrence counter, 32 _{1 to} 32 _n , 42 _{1 to} 42
_{n, 42 1a, 42 1b,} 42 1c ~42 3a ~423c ... judging means 41 ₁ to 41 ₃ ... system abnormality frequency counter, 33 ₁
~ 33 _n ... station alarm output unit, 43 ₁ ~43 _n ... system abnormality output means.

Claims (4)

(57) [Claims] 1. A control station having m transmission / reception units and a line selection circuit capable of independently switching a line path corresponding to each of these transmission / reception units and a controlled station of n (n ≧ m) stations Wherein each of the transmitting and receiving units of the control station performs a data communication evenly with the controlled stations of the n stations while selectively turning on and off the line path of the line selection circuit. The station selects the line so that each controlled station always performs data communication with all the transmitting / receiving sections when each transmitting / receiving section has performed data communication in the past m rounds with all the controlled stations. A remote monitoring control device comprising a communication line selection control means for selectively turning on a circuit line of a circuit. 2. A control station having m transmission / reception units and a line selection circuit capable of independently switching a line path corresponding to each of these transmission / reception units, and a controlled station of n (n ≧ m) stations. Wherein each of the transmitting and receiving units of the control station performs a data communication evenly with the controlled stations of the n stations while selectively turning on and off the line path of the line selection circuit. The station selects the line so that each controlled station always performs data communication with all the transmitting / receiving sections when each transmitting / receiving section has performed data communication in the past m rounds with all the controlled stations. Communication line selection control means for selectively turning on a circuit line path; provided in correspondence with each of the controlled stations, the number m of the transmitting / receiving sections or the number corresponding to the processing content of each controlled station ; Setting value storage means to be set, and each of the transmitting and receiving units being controlled Can to have detected an error in the control station at the time of data communication between the
And each station corresponding counter for counting, each transceiver is set to the setting value storing means between said total controlled station
Arbitrary number based on the m-th round or the set number of each control station unit
The counter corresponding to each station when the data communication of the
Comparing the count value of the data and the set value of the setting value storing means corresponding time matched output the station abnormality of the control station, the station error output control means having means for determining as normal when a mismatch And a remote monitoring control device. 3. A control station having m transmission / reception units and a line selection circuit capable of independently switching a line path corresponding to each of the transmission / reception units, and a controlled station of n (n ≧ m) stations. Wherein each of the transmitting and receiving units of the control station performs a data communication evenly with the controlled stations of the n stations while selectively turning on and off the line path of the line selection circuit. The station selects the line so that each controlled station always performs data communication with all the transmitting / receiving sections when each transmitting / receiving section has performed data communication in the past m rounds with all the controlled stations. Communication line selection control means for selectively turning on a circuit line of a circuit; set value storage means provided corresponding to each of the transmission / reception units, where the number n of the controlled stations is set; the different transmitting and receiving unit based on the time of data communication with the controlled station Each system corresponding counter count can and has been detected, each of when the respective transceiver has performed in the past p (any cruiser eye number) + m Tour th data communication with said total controlled station System support
A system abnormality output control unit having means for comparing the count value of the counter with the set value of the set value storage unit and outputting a system abnormality of the transmission / reception unit system when they match with each other; Control device. 4. A control station having m transmission / reception units and a line selection circuit capable of independently switching a line path corresponding to each of these transmission / reception units and a controlled station of n (n ≧ m) stations Wherein each of the transmitting and receiving units of the control station performs a data communication evenly with the controlled stations of the n stations while selectively turning on and off the line path of the line selection circuit. The station selects the line so that each controlled station always performs data communication with all the transmitting / receiving sections when each transmitting / receiving section has performed data communication in the past m rounds with all the controlled stations. Communication line selection control means for selectively turning on a circuit line of a circuit; a plurality of set value storage means for storing different set values in advance in a stepwise manner; transceiver located at the time of data communication with the controlled station Different <br/> each system corresponding counter for counting can and normally was detected, the last p (any cruiser eye number) + m Tour th data communication with each transceiver is the total controlled station Each of the above systems when
When the count value of the corresponding counter matches the stepwise set value of the plurality of set value storage means, a system abnormality output control means having means for outputting a stepwise system abnormality state according to the set value; A remote monitoring control device comprising: