Monitoring method of transmissoin circuit

[Detailed Description of the Invention]

[Field of the Invention] The present invention always supervises the data transmission circuit between a transmission line surveillance method, especially the computer system for electric power systems, and when it becomes more than a level with a defective fraction, it relates to the transmission line surveillance method changed automatically. [Background of the Invention] Although there were some which supervise the stop of the data communications between computer systems conventionally, stopping at notifying a surveillance result to an operation member -- Si and the data transmission system judged to be poor are used succeedingly, or it is used, changing to other healthy data transmission systems -- that judgment was left to judgment of the operation member. [The problem of a background art] Since it did not automate with above nine-lot To and a change standard, the disposal after it was judged that it was poor had a fault which changes with each operation members. [Objects of the Invention] The present invention was made for the purpose of solving the above-mentioned fault, and an object of the present invention is Ah Si and to automate and to provide the transmission line surveillance method which can be changed. [Similar trade of an invention] It Removal to provide a changeover switch between the transmission lines which Suspension between 61 Feng Shin, and carry out change use, and the priority of being Tung hard data is set to transmission data, a data intermediary is compared by the change judgment part, and it is by what it is going to change to a circuit with few defective fractions of important data. [Example] Operation ?ll is explained, referring to drawings below. In 0 figure 1 which is a lineblock diagram of the data transmission system between the total IR-opportunities for electric power systems by the transmission N line surveillance method according [ the 1st Cause ] to the present invention, 1 is a computer and is connected to transmission line 4 via transmission line transfer device 2 and Modem [3. And a transmission line is 2 time #i in this case! It has composition. It is a lineblock diagram of 2nd [ The ] figure Transmission line change detector circuit. 7-1. is a Engineering 2-counter section, and is already kicked for every Recumbent, and the number of times of an error which occurred in the regulation time at the time of transmission counts it. 8 is a change judgment part, the count value from the above-mentioned error counter section 7-1 is inputted, the defective fraction of each circuit is compared, and a circuit with few defective fractions of important data is determined. The number of times that it was judged at this time that it should change and carry out by change same number counter section 10 is counted, and if this judges that the change was performed in regulation time as for more than the number of times of regulation, it will not change by stopping a change generating signal by change suppression part 11. This is for preventing the change [ ' too much ] in the case of all the abnormalities in a circuit. 9 is change No. 18 generating part, determines change time beforehand, and transmits change timing information to a partner end from change instruction transmission section 14. The transmission line change detector circuit which has the above-mentioned composition also provides a partner end, and it is Maki 9 To. The change instruction receiving part in which 12 receives change timing Sentiment @ from a partner end, and 13 are change 14" Vo parts, the above-mentioned change timing information from a partner end is received, and the new state of transmission Edge transfer device , of a self-end is determined. Next, it divides into the part tact side of operation and partner one end, and explains. Drawing 3 is a flow chart for the explanation of operation by the side of tact. Now, the number of times of an error within regulation time counts, the defective fraction of Valley trouble is compared by transmission error counter section 7-1 of each time m strawberry, and [gl line with few defective fractions of important data is determined (Step 33). At this time, the number of times that it was judged that it should change in change frequency counter part 10 is increased, and it is To step 34, Determine change time by Admiration signal generator 9, and change timing information is transmitted to a partner end via change instruction transmission section 14 at To step 36, without whether it is also L and operating a change suppression part (Step, f35) (Step 37), and it has a time delay at a self-end (Step.). Trip signal 5 is sent out to transmission Edge transfer device 2 of De 38 self-one end (Step 39). This time delay is chosen as the timing which the Tansya circuit Admiration device of self-one end and a partner end can change simultaneously. If it is judged that more than the number of times of regulation was changed into regulation time in change frequency counter part 10, a change inhibiting signal will be sent out (Step 40). Drawing 4 is a useless flow chart of explanation of partner one end of operation. If change instruction receiving part 12 receives the change timing information from the above-mentioned self-end (STELLA 7'41), at 1 and the received partner end, the new state of transmission line transfer device 2 will be determined by change judgment part 13 (Step, A 42). At this time, the counter of change frequency counter part 10, is increased (Step 43), And if change deterrence tffs 11 does not operate (Step 44), it is delayed until it becomes the received change timing, and timing (Step 45) is united, and the - and self-end and partner end where the time comes change transmission line Switchover fii2 simultaneously (Step 46). the example system configuration figure of others [ Drawing / 5 ] -- Ah Si and Calculation 1 -- a double system -- it is constituted so that it may have composition and an operating form can be changed to Mutually. Therefore, as for each computer, 6 thread has one transmission time lR4, respectively. in addition -- generally the computer system of an electric power system serves as a multiplex system system configuration -- when abnormalities occur by Si and a certain computer series, it changes to another computer series and processing is continued. In a load sharing type multiplex system, the processing made to share with each computer series is provided with a priority, and an operating form can be changed. Drawing 6 is a lineblock diagram of an operating form change detector circuit, and in 2, since it is a system, 6 thread has an identical configuration, respectively, and the concrete composition of the system of another side is omitted and shown. It is the same as that of the case of the above-mentioned example that the partner end also has an identical configuration. Numerals 7-1*8 in a figure, and 10 thru/or 14 corresponds with Drawing 2. Yo Si change time is determined as the signal from 15t / 'i Mikusa operating form Switching part Si change judgment part 8, this change timing information is transmitted to a partner end, change signal 6 is sent out to other computers in a partner end, simultaneously a self-end, and a simultaneous change is performed. On the other hand, at a partner end, change receiving part 12 which has a self-end and an identical configuration receives the change timing information from a self-end, and the new state of a computer operating form is determined in change judgment part 13. If this signal is inputted into computer operating form switching part 15, change time is determined and that time comes, change signal 6 will be sent out and a partner end computer will be changed. Of course, timing adjustment is carried out so that a time delay may be provided between time until a partner end receives the change timing information sent out to the partner end from the self-end and a partner end emits a change signal in the back, and time until it emits a change signal in a self-end and a simultaneous change may be made. In this case, when the change more than the number of times of regulation is made by that number-of-times Cow of change j The part 10 makes the number of times of a change increase, and the above-mentioned change frequency counter part 10 in regulation time, it is the same as that of the case of the above-mentioned example that a change is stopped by change suppression part 11. Although each above-mentioned example explained the change of only a transmission line, and the change of the computer by which multiplex composition was carried out with the transmission line, it is clear that it is not limited to this and various combination exists. [Effect of the Invention] As explained above, the number of times of an error of transmission data which connects between each meter 'x and an opportunity by a plurality of transmission lines according to the present invention, and has a priority is always supervised, It detects that the transmission error carried out number-of-times generating of predetermined, and since it constituted so that it might change to the transmission line with few defective fractions of data which is a priority and which is 10,000 automatically, the transmission line surveillance method in which data communications not only with prompt management being performed based on the poor preset value over a transmission line but sufficient quality are possible can be provided.

[Brief Description of the Drawings]

The computer for electric power systems for Drawing 1 to illustrate the transmission line surveillance method by the present invention, The data transmission system lineblock diagram of an opportunity and Drawing 2 are one example block lineblock diagrams of a transmission line change detector circuit, The flow chart for explanation [ in / in Drawing 3 / a self-end ] of operation, the flow chart for explanation [ in / in Drawing 4 / the other end ] of operation, the data transmission system lineblock diagram explaining the example of others [ figure / m5 ] of the computer for electric power systems, and Drawing 6 are one example block lineblock diagrams of an operating form change detector circuit. 1 ... Computer 2 ... transmission line transfer device, 3 ... modem 4 [ ... An operating form change signal, 7-1 / ... Transmission engineer 2-Counter part, ] ... A transmission line, 5 ... A transmission line change signal, 6 8.13 ... change judgment part, 9 ... switching signal generating part, 10 ... change frequency counter part, 11 -... change suppression part 12 [ ... Computer operating form switching part. ] ... A change instruction receiving part, 14 ... A change instruction transmission section, 15 For a while applicant Tokyo Shibaura Electric Co., Ltd. representative Patent attorney Drawing 2 of Norio Ishii Drawing 3