JPS5812062A - Output device for parallel electronic computer system - Google Patents

Abstract

PURPOSE:To improve the reliability of a system, by providing a time monitor circuit and a collation circuit for both output devices of a main system and a slave system, and inputting a control signal from both the computers, in a parallel operating system for the electronic computers of the main and slave systems. CONSTITUTION:A master system output device 5 inputs a control signal from a master system electronic computer 1 and a slave system electronic computer 2, a time monitor circuit 7 of the master system monitors that both the control signals are inputted within a prescribed time difference, and after a collation circuit 9 of the master system collates that the contents of both the control signals are coincident, a control signal is outputted externally. An output device 6 of the slave system collates both the control signals similarly by using time monitor and collation circuits 8 and 10, but no control signal is outputted externally. If the device 5 is failed, a control signal is outputted externally from the device 6. If the computer 1 is in failure, the computer 2 detects it and a control signal is outputted from the device 6. When both the control signals are inputted with a prescribed time difference or more, or both the control signals are discriminated as discidence, an alarm is given and the operator manually outputs a control signal from either the master or the slave.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an output device for a parallel computer system in which one computer operates as a main system and the other computer operates as a slave system.

Figure 1 is a block diagram of a conventional parallel computer system, in which [1] is the main computer, (2) is the slave computer, (3) is the conventional output device, and (4) is the main computer. is a switching circuit built into the conventional output device (3).

To explain the output operation of the control signal of the parallel computer system according to the above configuration, the switching circuit (4) built in the output device (3) outputs the control signal from the main computer (1) to the outside. has been switched to. Then, the output device (3) inputs the control signals from the main electronic computer (1) and the slave electronic computer (2), but the switching circuit (4) inputs the control signals from the main electronic computer (1). ) is selected and output to the control signal.

However, the output fe II (3) of the conventional parallel computer system shown in FIG.
If the control signal is not correctly input to the output device (3), even if the control signal from the slave computer (2) is correctly input to the output device (37), the control signal will not be output to the outside. Further, even if the output device (3) fails, the control signal cannot be outputted to the outside.

The present invention has been made in order to eliminate the drawbacks of the conventional ones as described above.
The present invention provides an output device for a parallel computer system that can output a correct control signal to the outside even if one of the output devices fails.

In order to achieve the above object, the present invention provides a main system output device and a slave system output device that input control signals from the main system electronic computer and the slave system electronic computer, respectively, and also provides a main system output device and a slave system output device, respectively. This system is equipped with a time monitoring circuit and a verification circuit for time-monitoring control signals from the main computer and the slave computer in the main system computer and the slave system output device. Become clear.

FIG. 2 is a block diagram showing an embodiment of the output device of the parallel computer system according to the present invention.
) is the main output device, (6) is the slave output vcr1t, and (7) and (lj) are the main output device (5) and the slave output device @ (built in 61), respectively. , a time monitoring circuit for time-monitoring control @ signals from the main computer (1) and the slave computer (2), and (9
) and αG are built into the main system output device t(5) and the slave system output device (6), respectively, and are used for main system electronic calculation! (
]) and the control signal from the slave electronic computer (2).

The output device of the parallel computer system according to the above configuration is as follows:
First, when performing external control, the main output device (
5) is the main computer (1) and the slave computer (2).
), and uses the main system time monitoring circuit (7) to monitor whether the nuclear control signal is input within a predetermined time difference. ) to verify that the contents of the intraocular control signal match, and then output the control signal to the outside.

Similarly, control signals from the slave output device (6) v'i, the master electronic computer (1) and the slave electronic #f calculator (2) are input, and the slave time monitoring circuit (8) is used to monitor that the two control signals are input within a predetermined time difference, and a slave matching circuit α (j is used to check that the contents of the two control signals match). , but does not output all control signals to the outside.

Next, if the slave electronic computer (2) fails in such a state, the time monitoring circuit (
7) and the verification circuit (9) stop functioning, the control signal of the main computer (1) is output to the outside as is, and if the main output device (5) fails, the slave computer A control signal is output to the outside through the output device (6).

If the main computer (1) malfunctions, the slave computer (2) will detect this, and from then on, the control signal of the slave computer (2) will be transmitted by the output device (b) of the slave system. Output to the outside.

Furthermore, the main electronic computer (1) and the slave electronic computer (
When the control signal from 2) is input to the main system output device (5) and is operating, the main system's time monitoring circuit (by force) detects whether the two control signals have elapsed by a predetermined time difference or more. If it is determined that the two control signals have been input, or if the verification circuit (9) of the main system determines that the two control signals do not match, issue a warning to the operator that the control outputs do not match; Thereafter, it is determined whether to continue operation based on the control signal of the slave computer (1), or to stop the main computer (1) and continue operation based on the control signal of the slave computer (2). The decision can be left to the driver, allowing safe and reliable driving at all times.

In the above embodiment, the electronic computer (1) and the output device (5)
) is the main system, and the computer (2) and the output device (6) are the slave system. ) may of course be used as the main system. Further, although the parallel system is configured with duplex systems, it can be similarly used in the case of multiple systems.

As described above, according to the output device of the parallel computer system according to the present invention, since the main output device and the slave output device have built-in time monitoring circuits and collation circuits, Control operations can be continued even in the event of a failure in the installation, and even if failure of the electronic computer or output device cannot be clearly detected.
By leaving the subsequent processing to the comprehensive judgment of the operator, it is possible to prevent the output of erroneous control signals, thereby improving the reliability of the system.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing an output device of a conventional parallel computer system, and FIG. 2 is a block diagram showing an embodiment of the output device of a parallel computer system according to the present invention. (1) Main system computer (21 clouds, slave system computer (3) #, conventional output device (4J) - switching device (5) - main system output device (6) - slave system Output device (7)' - Main system time monitoring circuit (8) - Slave system time monitoring circuit (9) - Main system verification circuit αQ - Slave system verification circuit Note that the same symbols in the diagram Indicates the same or similar parts. Figure 1 Figure 2

Claims (1)

[Claims] In a parallel computer system in which one computer operates as the main computer and the other computer operates as the slave system, the main system output device and the slave computer manually input both control signals from the main computer and the slave computer, respectively. In addition to providing a system output device, the main system output device and the slave system output device are equipped with a time monitoring circuit and a collation circuit for time monitoring and comparison of both control signals from the main system electronic computer and the slave system computer. An output device for a parallel electronic meter X machine system, characterized in that each of them is provided.