JPH0447732A - Monitor control system - Google Patents

Abstract

PURPOSE:To allow the system to cope quickly with a system fault by providing at least two systems of transmission and reception systems of a control data and a monitor data between a monitor controller and a monitored device. CONSTITUTION:The system is provided with at least two systems of control lines 1, 2, through which a control data is sent sequentially from a monitor controller AS to monitored devices TRMD1, TRMD2,...TRMDn and returned to the monitor controller AS, and at least two systems of monitor lines 3, 4 through which the monitor data from the monitored devices TRMD1, TRMD 2,...TRMDn to the monitor controller AS. Thus, even when one transmission/ reception system is faulty in its function, since the other transmission/reception system is functioned normally, normal monitor control is continued.

Description

[Detailed Description of the Invention] [Summary] Various possible failures occur regarding a supervisory control method in which a supervisory control device sends control data to a plurality of monitored devices within a station and sequentially collects monitoring data. The purpose of the present invention is to realize a monitoring control method that allows monitoring data to be collected every time the monitoring data is collected even when the monitoring data is used, and requires fewer data lines. At least two transmission/reception systems for the data and the monitoring data
U7, at least two systems connecting the supervisory control device and each monitored device in series, transmitting the control data sequentially from the supervisory control bag; 6 to each monitored device to the supervisory control device; and at least two monitoring lines that connect each monitored device and the monitoring control device in series and transmit the monitoring data from each monitored device to the monitoring control device.

[Industrial Application Field] The present invention relates to a supervisory control system, and particularly to a supervisory control system in which a supervisory control device sends control data to a plurality of monitored devices within a station and sequentially collects monitoring data.

In recent years, as digital multiplex radio systems and the like have become more diverse and complex, there is a need for maintenance personnel to be able to quickly and accurately notify the operating status of various devices within a station, as well as to be able to quickly respond to system failures.

[Conventional technology]

In the conventional supervisory control method, a plurality of monitored devices are connected in parallel to one supervisory control device C1, and a dedicated control line and a monitoring line are provided for each, so that control data can be transmitted and received by controlling data and monitoring data. Monitoring and control was performed by sequential polling.

FIG. 4 is a diagram showing an example of the configuration of a conventional monitoring and control system, where AS' is a monitoring and control device that transmits and receives control data and monitoring data for monitoring and controlling each device in the station building, and TR
MDI'-TRMDn' (nLl arbitrary integer) each indicates a monitored device that is monitored and controlled by the control data and monitoring data from the supervisory control device AS'.

For supervisory control equipment AS', CCITT recommendation ■.

The selector 70 transfers each data set based on the interface 11 to each monitoring control device TRM1]'
The control line CL and the monitoring line ML are sequentially selected to transmit and receive data, and the serial/parallel conversion circuit 71 converts the serial signal from the selector 70 into a parallel signal, which is then transmitted by software using C1''tJ. Each monitoring and control device is monitored by processing.

In addition, monitored devices TRMD1' to TRMDn',
1, corresponds to, for example, a wireless device that forms the core of a digital multiplex wireless system, such as a monitored device TRMl)]'L
J, transmitting/receiving device 50, modem device 51, switching device 52,
The interface section 60 includes a signal processing section that takes in control data and controls each device, receives monitoring information from each device, and outputs monitoring data.

In the interface section 60, the monitoring system is performed using Resino\RCV5? Receives the control data placed in the data area of the data frame (Fig. 51 I) from the ff1l device AS' (1 random,
Norial〉Parallel conversion circuit 6th piece/jl-1
The control data is converted into a parallel signal from the Runin No. 5, and the 1lil control error detection circuit 62 determines whether or not the control data is addressed to the own station based on the frame pattern (FPTN in Figure 5). The switching device 52 is controlled according to the contents of the control data 1 of the data frame, the connection with the carrier terminal station is cut off, and the monitoring data of the own station devices 50 to 52 is sent to the synthesis circuit 63. The signals are combined, converted into a serial signal by a parallel/serial conversion circuit 64, and sent to the driver DRV 5.

At this time, the driver DRV5 controls wholesale data detection circuit 62.
The conversion circuit 64 changes depending on the timing of the 3-stage 1 signal (which is in a high impedance state if it is not addressed to the own station).
The serial signal, that is, the monitoring data from the monitoring line M
It is sent from L to supervisory control system 8S'.

[Problem to be solved by the invention]

In such conventional supervisory control systems, multiple monitored devices are connected in parallel to one supervisory control device, each with its own dedicated control line and monitoring line. Monitoring data is collected when a supervisory control failure occurs, i.e., ■ when each line is disconnected, ■ when the connector connecting each line and each device is disconnected, or ■ when the monitored device itself malfunctions. It becomes impossible to do it. As a result, since the type of failure cannot be identified, there are problems such as maintenance staff having to take time to take countermeasures and perform restoration work.

Furthermore, since the number of control lines and monitoring lines inevitably increases by the number of monitored devices, there are problems such as the number of lines increases and a large wiring space is required.

Therefore, it is an object of the present invention to realize a monitoring control method that allows monitoring data to be normally collected even if an expected type of failure occurs, and also requires a small number of data lines. do.

[Means to solve the problem]

In the supervisory control system according to the present invention for achieving the above object, as shown in principle in FIG.
S and each monitored device TRMD ITRMD2. ...T
RM D n has at least two transmission/reception systems for the control data and the monitoring data, and the supervisory control device AS and each of the monitored devices TRMDI, TRMD2 .・=T
RMDn are connected in series, and the control data is transmitted from the supervisory control device AS to each monitored device TRMDI, TRMD2 .
. . . at least two control lines 1.2 that sequentially transmit data to TRMDn and return to the supervisory control device As, and each monitored device TRMD1. TRMD2. ...TRMDn and the monitoring control device As are connected in series, and each monitored device TRM
DI, TRMD2. . . . At least two systems of monitoring lines 3 and 4 are provided for transmitting the monitoring data from the TRMDn to the monitoring control device AS.

Further, in the present invention, each monitored device TRMD ITRMD
2...-TRMDn internally folded connectors 11.21...nl and 12.2 so that each control line 1.2 and each monitoring line 3.4 are always connected
2...n2.

A further feature is that each control line 1.2 and each monitoring line 3.4 are in mutually opposite directions.

[For production]

In the present invention, the supervisory control device As has a plurality of monitored devices TR.
MDI, TRMD2=4'' When monitoring and controlling RMDn, the monitoring and control device AS monitors each monitored device TRMD1.
In contrast to the conventional method of monitoring and controlling TRMD2-4'RMDn in parallel by providing dedicated monitoring and control lines for each,
We focused on monitoring and controlling by providing multiple control/monitoring lines that connect each device in series.

That is, as shown in FIG. 1, at least two control data output lines from the supervisory control device As, for example control lines 1 and 2, are connected to each monitored device TRMDI, T.
RMD2-TRMDn are connected in series, and for example, the monitoring line 3.4 is also connected to each monitored device TRMDI.
, TRMD2 . . . TRMDn in series and connected to the supervisory control device AS.

Therefore, each monitored device TRMDI, TRMD2...T
The RMDn is controlled by at least two systems of control data from the control line 1.2, and is monitored and controlled by transmitting each monitoring data to the monitoring and control device AS via the monitoring line 3.4. As long as no failure occurs in the control line or the monitoring line, the monitoring control can be performed normally.

In addition, each monitored device has multiple transmission/reception systems corresponding to the multiple control/monitoring lines, so even if one transmission/reception system malfunctions, the other transmission/reception systems will fail. Since it is functioning normally, normal monitoring control can be continued.

As a result, at least two control lines and two monitoring lines are required regardless of the number of monitored devices.

In addition, in each monitored device, if the human power connector of each control/monitor line and the output connector of the monitoring line are folded back so that each line is always connected in series,
Even if a connector disconnection occurs in any monitored device, the monitoring and control of other monitored devices can be performed normally. In addition, if monitoring data cannot be obtained from the monitored device, or if the fault does not recover even after reconnecting the connector, it can be determined that the device itself is at fault.

Furthermore, when the control lines 1 and 2 and the monitoring lines 3 and 4 are provided in opposite directions, the speed at which control data and monitoring data are transmitted and collected is equalized between each monitoring and control device. There is a Melinodo.

〔Example〕

FIG. 2 is a diagram showing an embodiment of the supervisory control system according to the present invention shown in FIG. There are two monitoring lines, lines 3 and 4, which are opposite in direction. In addition, the monitored devices are TRMDI, TRMD2
and TRMD3, and each monitored device includes a transmitting/receiving device 50, a modem device 51, and a switching device 52 shown in FIG.
and an interface section 65 shown in detail in FIG.

Furthermore, these monitored devices TRMrll, TRMD2, and TRMD3 are connected to the driver DRVI of the supervisory control device AS,
It has connectors 11, 21 and 31 for internally folding back the control lines 1 and 2 from DRV2 and connecting them in series to the terminating resistors R1 and R2 of the supervisory control device AS. Connector for connecting the monitoring line 3.4 internally in series], 2.2
2 and 32. Note that 5 and 6 are input/output connectors between the supervisory control device As, the control lines 1 and 2, and the supervisory line 3.4.

FIG. 3 is a diagram showing an embodiment of the interface section 65 in each monitored device shown in FIG. 2. In this embodiment, the receiver RCV5 of FIG. 1.1 (2) 3 books 1) There are two systems, receiver RC■3 and receiver RCV4, for importing two systems of serial control data from the supervisory control device ΔS through the 3 volumes 1), and the driver DRV5 is connected to the monitoring lines 3 and 4. It is divided into two systems, drivers DRV3 and DRV4, for timing the sending of monitoring data to. Other configuration numbers 1 and 4 are the same as in the case of FIG. 4, but if the serial/parallel conversion circuit 61 can take in at least one of the outputs of the receivers RCV3 and RCV4, the initial purpose can be achieved. .

Next, to explain the operation of the embodiment shown in FIG. 2, the control data consisting of serial data output from the driver DRV 1 of the supervisory control device As is time-division (T DM) in the frame format shown in FIG. ) by control line 1
Accordingly, the signal is taken into the monitored device TRMD3 via the connector 31, turned back inside the same connector 31, sent to the next connector 21, taken into the monitored device TRMD2, turned back inside the connector 21, and further sent to the connector 11. The signal is taken into the monitored device TRMD 1, is turned back inside the connector 11, and finally terminated at the terminating resistor R1 of the monitoring and control device AS.

Similarly, the control roller data consisting of serial data output from the driver DR■2 of the supervisory control device S is
The control line 2 is routed in the opposite direction to the control line I from the connector 11 to the connector 21 to the connector 31 and is similarly terminated at the terminating resistor R2 of the supervisory control device AS.

For example, the control data of control line 1, which has been taken into each monitored device in this way, has a frame pattern F as shown in FIG.
Only in the monitored device designated by the PTN, the monitoring data detected by the control data detection circuit 62 and collected by the synthesis circuit 63 is transferred to the parallel/serial conversion circuit by controlling the timing of the 3-state signal to the driver DRV3. 64 from the driver DRV3 to the monitoring line 3 corresponding to the control line 1.

This monitoring data is then transmitted to monitoring line 3 and connector j2.
32 to the receiver RCVI of the monitoring device AS, the processor CPU of the monitoring device AS processes the received monitoring data in accordance with the transmitted control data.

Note that when the output monitoring data passes through another monitoring data output connector, that connector is not outputting monitoring data (each of the three state signals is in a high impedance state).

The control line 1 and the control line 2 are outputted with the same data at the same timing from the supervisory control device AS, and as the lines move away from the control data input/output connector 5 of the supervisory control device AS, the terminal monitored There will be a slight time difference in the timing at which the device is controlled.

Further, the two control lines 1 and 2 can be configured to be provided in the same direction, but if they are provided in opposite directions as in this embodiment, the control lines 1 and 2 from the supervisory control device AS may be Control data is monitored device TRMD
1→TRMD2→TRMD3 (counterclockwise), and at the same time, the monitored device TRMD3→TRMD2→
TRMD 1 is also sent in the direction (clockwise), and if the two monitoring lines 3 and 4 are also provided in opposite directions, the monitored device TRMD ]TR
MD2. Each monitor data from the TRMD 3 is also sent in the same direction as the control data and reaches the monitor control device As, so the transmission and collection speeds of the control data and the monitor data are equalized.

In this way, the supervisory control device AS controls each monitored device TRMD.
1. TRMD2. This means that TRMD3 can be monitored and controlled in duplicate and sequentially using control data, and monitoring data can be collected, so even if a failure occurs in any of the monitored devices or a connector is disconnected, all control lines can be monitored. As long as a disconnection failure (the probability of this occurrence is very small) does not occur, other monitored devices will be able to perform normal monitoring and control.

In this case, for the monitored device for which monitoring data could not be collected, the operator actually reconnects the connector.
If it still does not recover, it is determined that the monitored device itself is at fault.

〔Effect of the invention〕

As explained above, in the supervisory control method according to the present invention,
Since the supervisory control device and the monitored device are configured to be monitored and controlled by a control line and a monitoring line consisting of at least two systems connected in series with each other, even if a malfunction occurs in some monitored devices, the other devices will not be affected. The monitoring data collection of the monitored devices can be performed without any trouble, and the number of control/monitoring lines is not required as much as the number of monitored devices.

Further, by configuring the line to be folded back inside the input/output connector of each supervisory control device, it is possible to eliminate supervisory control failures due to disconnected connectors.

Furthermore, by providing the monitoring line and the control line in opposite directions, the time difference in which each monitored device is monitored and controlled is equalized, and variations in monitoring data can be eliminated.

[Brief explanation of the drawing]

FIG. 1 is a principle block diagram of the supervisory control method according to the present invention. FIG. 2 is a block diagram showing an embodiment of the supervisory control method according to the present invention. FIG. 3 is a block diagram showing the principle of the supervisory control method according to the present invention. FIG. 4 is a block diagram showing an embodiment of the interface section of the device, FIG. 4 is a block diagram showing the configuration of a conventional example, and FIG. 5 is a diagram showing an example of the configuration of a data frame. In Fig. 1, 1.2...control line, 3.4...monitoring line, 11-n1...control data input connector, 12-n
2... Connector for monitoring data output, AS... Monitoring control device, TRMD1 to TRM Dn... Monitored device. In the figures, the same reference numerals indicate the same or corresponding parts.

Claims (3)

[Claims] (1) The supervisory control device (AS) has multiple monitored devices (TRMD1), (TRMD2)...(TRMDn) within the station.
In a supervisory control method that sends control data to the AS and sequentially collects supervisory data, the supervisory control device (AS) and each monitored device (TRMD1)
), (TRMD2)...(TRMDn) each have at least two transmission/reception systems for the control data and the monitoring data.
system, and the supervisory control device (AS) and each monitored device (T
RMD1), (TRMD2)...(TRMDn) are connected in series, and the control data is sent to the supervisory control device (AS).
) to each monitored device (TRMD1), (TRMD2),
...(TRMDn) and transmits it to the monitoring control device (A
At least two control lines (1) (2) returning to S)
And each monitored device (TRMD1), (TRMD2)...(
TRMDn) and the monitoring control device (AS) are connected in series, and each monitored device (TRMD1), (TRMD2)...
・At least two monitoring lines (3
) (4), and a supervisory control method characterized by comprising: (2) Each monitored device (TRMD1), (TRMD2)
... (TRMDn) is an internally folded connector (11), (21) so that each control line (1) (2) and each monitoring line (3) (4) are always connected.
The supervisory control system according to claim 1, characterized in that it has (n1), (12), (22)...(n2). (3) Each control line (1) (2) and each monitoring line (3)
) and (4) are in opposite directions.