JP3248223B2 - Data update lock device during inspection - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a data update lock device under inspection for preventing the transmission of the equipment data to a central processing unit, which is a master station, during the inspection of the slave station equipment in the remote monitoring control device.

[0002]

2. Description of the Related Art A remote monitoring and control system is roughly divided into a cyclic system (that is, a system for periodically transmitting all state signals) and an HDLC system (that is, a system that transmits data according to an HDLC transmission procedure when a state changes or is requested). Method)
There are two methods. In the former cyclic method, the central station (central processing unit) concentrates on processing of state change detection and state change edit of a remote station, which increases the load on the master station and affects processing speed. Will occur. On the other hand, the latter HDL
In the C method, since the state change detection and the state change combination editing are distributed and processed on the slave station side, the processing on the master station side can be relatively easily and accurately performed.

[0003] Therefore, recently, the latter HDLC system has been adopted for a remote monitoring control device. This HD
The LC system (1) transmits to the master station only when a state change occurs, (2) transmits all information to the master station at a request from the master station about once a day for confirmation, (3) ) When a plurality of state changes occur, the causal information is transmitted to the master station in combination, or only the main cause information is transmitted, and the accompanying information is cut off. Measures have been implemented to reduce the number of incidents and to quickly ascertain the overall situation when a serious accident occurs (a large number of status changes occur in multiple slave stations). FIG. 11 is a schematic configuration diagram of a remote monitoring and control device using the HDLC system, where 1 is a master station composed of a central processing unit, 2 is a transmission line, 3 is a slave station, and 4 is a substation facility.

[0004]

SUMMARY OF THE INVENTION In a remote monitoring control device adopting the HDLC system, a slave station inspects equipment at the time of inspection.
Transmission occurs due to a state change that occurs during the inspection.
When this transmission occurs, the transmission path is occupied by the communication of the state change generated by the inspection, and there is a problem that communication of necessary information is delayed. In addition, the master station also has a problem that necessary information processing is delayed due to the processing of the state change notification generated by the inspection. Further, at the time of inspection at the slave station, the amount of state change caused by the inspection is larger than usual, so that there is a problem that the processing takes time.

The present invention has been made in view of the above circumstances, and locks updating of the facility data by locking the update of the facility data so that the facility data is not transmitted to the master station during facility inspection in a remote slave station. It is an object of the present invention to provide a data update lock device during inspection which reduces the processing load on the station.

[0006]

In order to achieve the above object, a first aspect of the present invention is to control a slave station of a remote monitoring control device by a master station of a central processing unit. A data intermediate processing unit is provided between the input / output unit and the transmission unit, so that state change data during equipment data inspection is not transmitted to the master station between the data intermediate processing unit and the input / output unit. this provided a data inspection during the update lock processing unit
The update lock processing unit during inspection is provided for each equipment to be inspected.
Is installed in the input section and input during inspection.
Invalidates the data latch clock signal and disables the latch circuit.
The operation is stopped .

[0007]

[0008] The second invention is installed in the data check update lock processing unit for each inspection facility immediately after the input unit, during inspection, in which so as to lock the output of data from the input unit.

[0009] The third invention comprises an input portion of the check signal only, provided the input data dedicated input unit, the data inspection during the update lock processing unit when it is in inspection, is in a position corresponding to the inspection signal The output of the data read from the input unit is locked.

[0010] The fourth invention is an input unit for data checking during the update lock processing section inspection signal and the input data is supplied,
A bit-by-bit sorting unit that sorts the signal that passed through this input unit into inspection signals and input data on a bit-by-bit basis for each inspection facility, and locks the output of the input data at the corresponding position during inspection by the signal assigned by this sorting unit. And a logic determining unit that performs the determination.

[0011]

[0012]

SUMMARY OF] with so as not to transmit the state change of the equipment data in the inspection to the master station in the first invention slave station, by not latch the input data during inspection by the data updating latch circuit, a data update The input data is not transmitted to the master station. In the second invention, input during inspection
Locked the update of the section data so that the input data was not transmitted to the master station. The third invention looks for either inspection signal is ordinal number, it inputs data of those in inspected upon finding what number position in the input data dedicated input section was not to transmit to the master station . According to the fourth invention, the input data corresponding to the check signal is not transmitted to the master station from among the input data corresponding to the check being performed and the input data corresponding to the bit being sorted.

[0013]

An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram of a slave station showing the first embodiment,
Reference numeral 11 denotes an input / output unit to which the substation equipment 4 shown in FIG. 11 is connected. 12 is a substation equipment 4
Is a check update lock processing unit that prevents a signal under check from being transmitted to the master station 1 through a transmission unit, which will be described later, when checking. Reference numeral 13 denotes a data intermediate processing unit which will be described in detail later.
For example, in order to process equipment data and transmit it from the transmission unit 14 to the master station 1 or to receive a control command or the like from the master station 1 at the transmission unit 14 and then give a command from the input / output unit 11 to each equipment,
Used to process data.

The data intermediate processing unit 13 transmits an all state memory 13a and an output of the all state memory 13a to a transmission unit 14
, A state change detecting section 13c for detecting a state change of facility data, etc., and a state change transmitting section 13d for supplying an output of the state change detecting section 13c to the transmission section 14. In addition, the response determination unit 13e, the change delay unit 13
f, the state change data is stored with the time, and the SOE unit 13g that sequentially sends out outputs according to a request for analysis when an accident occurs, and the control command sent from the transmission unit 14 to the input / output unit. 11 includes a control unit 13h.

In the first embodiment constructed as described above, when the various facilities in the substation facility 4 are inspected, if there is a state change due to the inspection of the facility to be inspected, the update lock processing unit under inspection 12 However, the data during the inspection is detected, and the change data due to the inspection of the corresponding equipment is not supplied to the master station 1 via the data intermediate processing section 13 and the transmission section 14.
As a result, no data is transmitted from the slave station 3 to the master station 1 on the transmission line 2 due to a state change for equipment inspection.
It does not occupy the transmission line 2 and does not affect the transmission of equipment not to be inspected.

FIG. 2 is a second embodiment showing a concrete example of the update lock processing unit 12 during inspection, which is installed in the digital input unit of the input / output unit 11 in FIG. In FIG. 2, reference numeral 21 denotes an AND circuit having a prohibition terminal at one terminal, which supplies a signal under inspection to the prohibition terminal of the AND circuit 21 and a clock signal for input data latch to the other terminal. 22a to 22n are D
These flip-flops 22a-
Input data is supplied from the input / output unit 11 to the D terminal of 22n.

When the embodiment shown in FIG. 2 is used, the clock signal is not sent from the AND circuit 21 during inspection, so that the D-type flip-flops 22a to 22n are not updated by the input data. That is, the update of the input data is locked. Therefore, the input data does not arrive at the data intermediate processing unit 13. The update lock processing unit 12 under inspection surrounded by a dashed line in the drawing is provided for each inspection target facility.

FIG. 3 is a third embodiment showing a concrete example of the update lock processing section 12 during inspection. In FIG. 3, reference numeral 31 denotes a digital input section (corresponding to the input side of the input / output section 11 in FIG. 1).
The digital input unit 31 is supplied with an inspection signal and input data. The inspection signal output from the digital input unit 31 is supplied to an input data update lock processing unit 32. When there is an inspection signal (during inspection), the input data update lock processing unit 32 outputs the input signal output from the digital input unit 31. Lock data output. As a result, the input data is no longer supplied to the master station 1 as in the second embodiment.
FIG. 4 is a flowchart showing the processing procedure at this time.
In the figure, step S ₁ is more digital input section 31
, First, the digital input section (DI)
31 is read. Thereafter, in step S ₂ to determine whether there is a check signal, when it is determined that the inspection being in step S ₂ in 1 bit, the process proceeds to step S ₃ proceeds to the processing of "YES". Step S ₃ is a process to disable sending input data other than the inspection in the signal to the data intermediate processing unit 13. Incidentally, when it is determined that not being checked at Step S ₂ sent the contents of DI31 proceeds to step S ₄ to the data intermediate processing unit 13. Hereafter, DI
If there are a plurality, the processing of steps S ₅ and S ₆ is performed,
If it is determined that the DI is the last DI, the processing is terminated.

FIG. 5 is a fourth embodiment showing a specific example of the inspection signal lock processing unit 12. In FIG.
An inspection signal for each facility is input to DI 51, and DI 51
52 is input with each facility data. Reference numeral 53 denotes an input data update lock processing unit similar to the above embodiment.

Next, the operation of the fourth embodiment will be described with reference to FIGS. 6 (a) and 6 (b). First, the DI 51 from which a signal indicating whether or not each facility is under inspection is read is read. (Step S ₁ ) In step S ₂ , the bit under inspection of the first facility is checked, and it is determined in step S ₃ whether the bit is “1” or not, that is, whether the bit is under inspection. I do. In step S ₃ bit is turned on if there was a "1" and "Y", go to the processing of step S _8. Step S ₈ is a processing unit to disable sending input data in the same manner inspection in the third embodiment to the data intermediate processing unit 13. Then go to the process of step S _6. Step S ₆ is a process view the second equipment follows. When the process ends corresponding to check in the signal of the final equipment the following in the process of step S _7, the processing in step S ₇ is completed. However, when the final equipment was previously, the process returns to step S _3.

The bits in the check is not "1" in step S _3, that is, the process proceeds to step S ₄ when it is determined that not being inspected. Step S ₄ is a step of bit positions in the inspection processes drawer whether the position of the input data DI52 throat performs this action by using a soft table of FIG. 6 (b). Then sent the contents of the DI52 except during inspection data intermediate processing unit 13 in step S _5. Thereafter, the above-described steps S ₆ , S ₇ , S ₈ and subsequent steps are repeated, and the processing is completed through steps S ₆ , S ₇ of the final equipment.

FIG. 7 is a fifth embodiment showing a specific example of the inspection signal lock processing unit 12. In FIG. 7, reference numeral 71 denotes a DI to which both an inspection signal and input data are inputted.
Is output by the bit sorting section 72, where the inspection signal and the input data are assigned to each inspection target facility. The input data is supplied to the input data update lock processing units 73a to 73n.
3n, when the inspection signal is input, the update of the input data is locked.

Next, the operation of the fifth embodiment will be described. Step S ₁ is for determining the first bit position of the DI71. In this case, the memory address and bit position of the transfer destination can be specified by the table in FIG.

[0024] proceed now to the second step S _2. The DI bit position of the table in the step S ₂ FIG 8 (b) (beginning 1st) read out. In step S ₃ 8
Inspection bits by table (b) is seen to "1" or "0", check bit is "1" in those i.e. indicates whether in inspection the contents data intermediate processing section in step S ₇ 13 Output to Check bit is "0", that is,
Inspection in the bit corresponding to its own equipment in step S ₄ when the data input watches or is being inspected, skip Step S ₇ if it is in inspection, i.e., outputs the contents to the data intermediate processing unit 13 the process proceeds to step S ₅ without. In step S ₇ if being inspected and outputs the content as described above to the data intermediate processing unit 13. Step S ₅ watches somewhere next DI bit position, it is determined whether the DI bit is not there yet the end bit of the table shown in FIG. 8 (b) in step S _6, in some cases the step S ₂ The process is returned to the above process, and if not, the process is terminated. In this case, the memory is updated.

FIG. 9 shows a sixth embodiment in which an under-inspection update lock processing unit 12 is provided at the output end of the state change detection unit 13c in the data intermediate processing unit 13. In FIG. Denotes an inspection position position discriminating unit, and 93 denotes an AND circuit having a prohibition terminal. The output of the inspection position determination unit 92 is supplied to the all state memory 13a and to one terminal of the AND circuit 93. AND circuit 93
The output of the all-state memory 13a is supplied to the other forbidden terminal.

Next, the operation of the sixth embodiment will be described. In FIG. 10 (a), first varying detection signal shape detected by the state change detection unit 13c at Step S ₁ is inputted to the inspection position location determination unit 92. Then, reading the table shown in FIG. 10 (b) in step S _2. The table shows the status change detection position number, whether it is the inspection position,
If it is not the inspection position, the corresponding inspection position is input in advance. Reading the table in step S _2, it is determined in step S ₃ that it is not inspection position, a state corresponding to the corresponding inspection in position number in step S _4, i.e., reads out the inspection bits from the full state memory 13a. This inspection bit is set in step S ₅
When in is determined to be in check, the state change detection output by not via the state change detection output step S ₆ is locked. However, if it is determined that not being inspected, the state change detecting output state change detection output in step S ₆ is output, it is transmitted to the master station 1 via the state change transmission unit 13d FIG.

In each of the above embodiments, the first embodiment does not transmit the status change during the inspection of the slave station to the master station, so that the load on the transmission path and the master station can be reduced. In the second embodiment, software processing can be simplified. Third and fourth
In the embodiment, special hardware and special software can be eliminated. In the fifth embodiment, software processing is somewhat burdensome, but the restrictions on use can be minimized. In the sixth embodiment, software processing only at the time of occurrence of a state change is sufficient, and the software processing load is small, and the state change detection output can be locked.

[0028]

As described above, according to the present invention,
During the equipment inspection in the slave station, the processing load on the master station can be reduced by not transmitting the equipment data to the master station, and the update of the equipment data can be locked on condition that the inspection is being performed. .

[Brief description of the drawings]

FIG. 1 is a block diagram of a slave station showing a first embodiment of the present invention.

FIG. 2 is a block diagram of an inspection signal lock processing unit according to a second embodiment of the present invention.

FIG. 3 is a block diagram of a check update lock processing unit according to a third embodiment of the present invention.

FIG. 4 is a flowchart showing a processing procedure of the embodiment shown in FIG. 3;

FIG. 5 is a block diagram of an update lock processing unit during inspection according to a fourth embodiment of the present invention.

6A is a flowchart showing a processing procedure of the embodiment shown in FIG. 5, and FIG. 6B is an explanatory diagram showing a table.

FIG. 7 is a block diagram of an update lock processing unit during inspection showing a fifth embodiment of the present invention.

8A is a flowchart showing a processing procedure of the embodiment shown in FIG. 7, and FIG. 8B is an explanatory diagram showing a table.

FIG. 9 is a block diagram showing a sixth embodiment of the present invention.

10A is a flowchart showing a processing procedure of the embodiment shown in FIG. 9, and FIG. 10B is an explanatory diagram showing a table.

FIG. 11 is a schematic configuration diagram of a remote monitoring control device using the HDLC method.

[Explanation of symbols]

 11 Input / output unit 12 Update lock processing unit under inspection 13 Data intermediate processing unit 14 Transmission unit

────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-62-251900 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) H04Q 9/00-9/16

Claims (4)

(57) [Claims] An apparatus for controlling a slave station of a remote monitoring control device by a master station of a central processing unit, comprising: a data intermediate processing unit between an input / output unit and a transmission unit provided in the slave station; between the data intermediate processing unit and the output unit, the inspection during the update lock processing unit such as the state change data in the facility data inspection is not transmitted to the master station is provided, the inspection during the update lock processing section, inspect Provided for each target facility
And at the input section, during inspection,
The input data latch clock signal is invalidated and the latch
A data update lock device during inspection, wherein the operation of a road is stopped . Wherein during inspection update lock unit is installed in each inspection facility immediately after the input unit, during inspection, characterized in that so as to lock the output of the data input unit or <br/> et al The data update lock device during inspection according to claim 1, wherein: 3. Inspection during the update lock processing section includes an input section of the inspection signal only, provided the input data dedicated input unit, when it is in inspection, entering at the position corresponding to the inspection signal
2. The data update lock device during inspection according to claim 1, wherein the output of the data read from the power unit is locked. 4. An under-update update lock processing unit includes : an input unit to which an inspection signal and input data are supplied; and a bit-by-bit distribution of a signal passing through the input unit for each bit of an inspection signal and input data for each inspection facility. 2. A data update lock during inspection according to claim 1, further comprising a logic unit for locking an output of input data at a corresponding position during inspection based on a signal distributed by the distribution unit. apparatus.