JPS58200686A - Selective controlling system of remote monitor controlling device - Google Patents

Abstract

PURPOSE:To improve the safety of selective controlling, by actuating the timer of a master station simultaneously when the transmission of a position selection signal is completed to confirm that a selection signal received while the timer actuating is not a selection completion signal due to a position selection signal to be transmitted next. CONSTITUTION:A master station A is provided with a console 1 for forming a position selection signal and control data signal. The console is connected to a central processing unit 3, which performs various arithmetic processing, through a interface 2 for console. A transmission circuit 5 of the master station A transmits a position selection signal to a slave station, and the slave station selects slave station equipment corresponding to the signal to send a selection completion signal to a receiving circuit 6 of the master station A. Simultaneously with the transmission of the position selection signal, the master station actuates a timer basic clock generation circuit 7 and confirms that the selection completion signal received by the circuit 6 while actuating the circuit 7 is not a selection completion signal based on a position selection signal to be transmitted next, and thus the safety of the selective controlling is improved.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a selection control method for a remote monitoring and control device.
When performing selection control, increase the safety of selection control by confirming that the selection completion signal received while the timer is running while the position selection signal is being sent is not a selection completion signal based on the position selection signal that is being sent. That is.

In the conventional selection control method of a remote monitoring and control device, when performing selection control, a position selection signal for selecting each of a plurality of slave station devices provided in each of a plurality of slave stations is transmitted to the parent station by a position selection operation. The signals are sequentially transmitted from the station, and a control switch is operated while each position selection signal is being transmitted, thereby forming a control data signal consisting of a control code such as OFF, OFF, etc., for example. Note that each position selection signal is formed by the position selection operation, and the formation of each position selection signal is canceled by the selection cancellation operation.

On the other hand, when each slave station device is selected by each position selection signal, a selection completion signal is sent from each slave station to the master station while each slave station device is being selected.

Furthermore, when the control switch is operated by a control operation and a control data signal is formed, if a selection completion signal is received by the master station, the selection completion signal is converted into a selection completion signal based on the position selection signal being sent. It is assumed that
The formed control data signal is sent out.

Then, as shown in FIG. 1(a), the first position selection signal (SA) is generated during the period Ta, which is between t1 o'clock and 15 o'clock, and the second position selection signal (SA) is generated during the period Tb, which is between 46 o'clock and t11 o'clock, for example. A selection signal (SB) is formed and sent to the slave station as shown in (C) of the same figure. When the control switches are operated between 47:00 and 18:00 to form the first and second control data signals (DA) and (DB), both signals 5 and 5 are transmitted to the slave station.

However, due to delays in transmission time between the master station and each slave station, the first. Second position selection signal (SA).

(SH) Based on each (1st and 2nd selection completed), between 12 o'clock and t9 o'clock, that is, the Ta' period which has the same period width as the Ta period, and the period after 110 o'clock which has the same period width as the Tb period. The signal is received by the master station in each period Tb.

Therefore, even while the second position selection signal (SB) is being sent, the first selection completion signal (SA) is received by the master station, and as shown in FIG. 1(e), the first position selection signal (SA) is
The first selection completion signal (SA) during the sending of the first
At the same time as the control data signal (DA) is being sent out, the first selection completion signal (SA,) during the sending of the second position selection signal (SB) is mistakenly recognized as a selection completion signal based on the second position selection signal (SB). Then, the second control data signal (SB) is also sent out, which may lead to erroneous control.

Therefore, in order to compensate for the shortcomings of the selection control method described above, the reception of the selection completion signal is checked when the position selection signal is sent, and if the selection completion signal has already been received, □" It is assumed that the selection completion signal is not a selection completion signal based on the position selection signal in the middle, but a selection completion signal based on the position selection signal sent before the position selection signal currently being sent, and the reception of the selection completion signal that has already been received ends. A selection control method for a remote monitoring and control device has been proposed in which the selection completion signal received next after the selection completion signal is regarded as the selection completion signal for the position selection signal currently being sent.

Then, as shown in FIG. 2(a), the third position selection signal (SC) is generated during the Tc period, which is between t12 o'clock and 113 o'clock, for example, and the fourth position selection signal (SC) is generated during the Ta period, which is between tlA o'clock and 119 o'clock. Signal (SD)
and sends it to the slave station as shown in Figure (C), and
As shown in (1) of the same figure, the fourth position selection signal (SD
) A control data signal (DD) for the selected slave station device is formed and transmitted to the slave station.

But the third. Fourth position selection signal (SC).

(SD) 3rd based on each. Fourth selection completion signal (
SC) 't(SD)' each has the same period width as the T''c period and Ta period, which are from time tls to time t18, that is, as shown in Section 2 (d), and have the same period width as the Tc period. The Td' period after t20 o'clock is the same,
Received by the master station.

Therefore, the reception of the third selection completion signal (sc)' is started while the fourth position selection signal (SD) is being sent, and the third selection completion signal (SC) is received when the reception of the selection completion signal is completed. The third selection completion signal (sc)'6 is mistakenly recognized as the selection completion signal received next, and is mistakenly recognized as the selection completion signal based on the fourth position selection signal, and the second
As shown in Figure (e), there is a possibility that the fourth control data (DD) may be sent.

This invention was made with the above points in mind,
By the position selection operation, a position selection signal is sent from the master station to the slave station, the slave station selects the slave station device corresponding to the position selection signal, and the slave station device is selected based on the position selection signal number. While the slave station is being selected, the slave station sends a selection completion signal to the master station;
Further, in the selection control method of the remote monitoring and control device for confirming whether or not it is the parent station, it is characterized in that it is confirmed that the selection completion signal starts a timer provided in the parent station at the same time as the sending of the position selection signal ends. This is a selection control method for a remote monitoring and control device.

Therefore, by setting the activation period of the timer to, for example, the longest period of time from the end of transmitting the position selection signal to the end of receiving the selection completion signal based on the position selection signal, it is possible to During transmission, ignore the selection completion signal received while the timer is running, and after the timer has finished running,
Next, the received selection completion signal can be regarded as a selection completion signal based on the position selection signal being sent and the control data signal can be sent out, thereby providing a selection control force and method for a highly safe remote monitoring and control device. It is something that can be done. 1'1 Next, one embodiment of the control method for the remote monitoring and control device of the present invention is shown in detail in FIG. A keyboard for forming a position selection signal, a control switch for forming a control data signal, etc. are provided. (2
) is an interface for the operating vehicle provided between the operating console (1) and the central processing unit (3) that performs various arithmetic processing;
(4) is a memory that stores various control methods and data, (5) is a transmission circuit that sends out position selection signals and control data signals, and (6) is a selection completion signal and display data signal from each slave station, etc. (7) is a timer basic clock generation circuit that generates a timer basic clock signal (hereinafter referred to as a clock signal).

Then, by the position selection operation of the operation console (1), the fifth position selection signal (SE) is generated during the Te period from 121 o'clock to t22 o'clock, as shown in FIG. 4(a), for example.
At the same time, during the Tf period from time t23 to time t31, the 5th and 6th position selection signals ('SF) are formed, and as shown in FIG. The selection signals (SE) and (SF) are immediately sent out from the transmitting circuit (5), and as shown in FIG. , the sixth position selection signal (SF) to output to the slave station device selected by the sixth position selection signal (SF). 6th control data signal (I)F).

(DF) Each is formed as follows. On the other hand, the fifth. As shown in FIG.
E) is received by the receiving circuit (6) between t24 hours and t27 hours, that is, during the Te period having the same period width as the Te period, and the sixth selection completion signal (SF5) based on the sixth position selection signal (SF) is received by the receiving circuit (6). is received by the receiving circuit (6) during a predetermined period from 28:00, that is, during the Tf period having the same period width as the Tf period.

On the other hand, the 5' and 6th position selection signals (SE).

(SF) Based on each selection cancellation operation, both position selection signals (SE) and (SF) are sent at t2.
When the counting ends at 2:00 and t31, the central processing unit (3) starts counting the clock signals mentioned above, and as shown in FIG. 4(e), the timers are activated at t22 and t31, respectively. At the same time, the fifth selection completion signal (
A timer is started until the reception of SE) is completed.

By the way, when the position selection operation is started and the transmission of the 5th and 6th position selection signals (SE) and '(SF) is started, as shown in FIG.
3), it is first determined whether the selection completion signal has been received, and if the selection completion signal has not been received,
Next, it is determined whether or not the timer is activated, and if the timer is activated, after the timer activation is completed, it is determined again whether or not a selection completion signal has been received, and the selection completion signal is When received, the selection completion flag is set.

Note that YES in the figure indicates affirmation, and NO indicates denial.

Also, based on the selection cancellation operation, the fifth. When the sending of the sixth position selection signals (SE) and (SF) is completed, as shown in FIG. 6, the central processing unit (3)
First, a timer is started, and then a selection completion flag is reset. Note that setting of the selection completion flag in FIG. 5 is performed after resetting of the selection completion flag in FIG. 6.

Furthermore, the control switch of the control console (1) is operated by the control operation, and the fifth. Sixth control data signal (DE).

(DF) When each is formed, as shown in FIG. 7, the central processing unit (3) first determines whether or not the position selection signal is being sent to the slave station, and then If it is being sent, then it is determined whether the selection completion flag is set, and if the selection completion flag is set, a control data signal is sent, and if the selection completion flag is reset, Do not ignore control data signals and send them.

In other words, the timer is activated at the same time as the transmission of the position selection signal ends, and while the next position selection signal is being transmitted, the received selection completion signal is not a selection completion signal based on the position selection signal currently being transmitted. After confirming that the selection completion signal has not been received and the conditions that the timer is not activated, the next selection completion signal received is converted into a selection completion signal based on the position selection signal being sent. It is assumed that this is the case and the selection completion flag is set.

When the sixth control data signal (DF) is generated while the sixth position selection signal (SF) is being sent,
Since the timer is running, the selection completion flag is reset and the received fifth selection completion signal (SE) is
It is confirmed that it is not a selection completion signal based on the sixth position selection signal (SF), the sixth control data signal (DF) is ignored, and the sixth control No data signal (DF) is sent out.

Next, when the sixth control data signal (DF) is formed, the selection completion signal (DF) is a selection completion signal after the conditions that the selection completion signal has not been received and the conditions that the timer is not activated are satisfied. Since the 6' selection completion signal (r)F)' has been received, the selection completion flag is set, and as shown between 129:00 and 130:00 in FIG. 4(f), the 6' control data signal (DF) is sent.

Therefore, according to the embodiment, the timer is activated at the same time as the transmission of the position selection signal ends, and while the next position selection signal is being transmitted, the selection completion signal received while the timer is activated is based on the position selection signal currently being transmitted. After confirming that it is not a selection completion signal and satisfying the conditions that the selection completion signal has not been received and the condition that the timer is not activated, the selection completion signal is generated based on the position selection signal being sent. As a result, for example, the fifth selection completion signal (SE) shown in FIG. It is possible to send out only the sixth control data signal (DF) when receiving the sixth selection completion signal (SF)' based on the sixth position selection signal Q (SF), which enables highly secure remote control. A selection control method for a supervisory control device can be provided.

In addition, if the transmission speed or number of transmission words differs for each slave station, the timer activation time is set from the time when the transmission of the position selection signal ends until the time when the reception of the selection completion signal based on the position selection signal ends. It is sufficient to set the startup time for each slave station to the longest time.
If it is stored in the memory (4) or the like in advance, selection control can be performed at optimal timing. Furthermore, it goes without saying that the timer may be formed not only by a software timer but also by a hardware timer.

[Brief explanation of drawings]

The drawings show the selection control method of the remote monitoring and control device.
a) to (e) and FIGS. 2(a) to (e) are explanatory timing charts of conventional examples, respectively. FIG. 3 and the following drawings show one embodiment of the present invention, and FIG. 4(a) to 4(f) are explanatory timing charts, FIG. 5 is a flowchart of control in position selection operation, FIG. 6 is a flowchart of control in selection cancellation operation, and FIG. 7 is a block diagram of main parts. It is a flowchart of control in control operation. (1)...Control vehicle, (3)...Central processing unit, (4
)...memory, (5)...transmission circuit, (6)...
Receiving circuit, (7)... Timer basic clock generation circuit, (2)... Master station, (DF), (DF)'... Control data signal, (SE), (SF)... Position Selection signal, (SE), (SF)'...Selection completion signal. Agent Patent Attorney Ryuta Fujita Department Figure 3 Figure 4 υb1 & -Siri U Figure 5 Figure 6

Claims (1)

[Claims] ■ A position selection signal is sent from the master station to the slave station by a position selection operation, and the slave station selects the slave station device corresponding to the position selection signal, and the slave station device is selected by the position selection signal. In the meantime, the slave station sends a selection completion signal to the master station, and the master station determines whether the received selection completion signal is the selection completion signal based on the number of the number of positions being sent. In the selection control method of a remote monitoring and control device for confirmation, a timer provided in the master station is started at the same time as the transmission of the position selection signal is finished, and it is confirmed that the signal is not a selection completion signal. Selection control method.