JPH10135991A - Input signal selection method and input signal selection system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide the input signal selection method and the input system signal selection system in which the system for the input signal is surely selected, even in the case of insertion/removal of one system selection section when a selection system control panel is not mounted, except that two adjacent system selection sections are simultaneously inserted/withdrawn. SOLUTION: The input signal selection system is provided with a selection system control panel 1, having a selector conversion section 2 that transmits 1st system selection information and a plurality of system selection sections 6-1-6-3 having a 1st selector 7 to select an external input signal, based on the 1st system selection information. In this case, the selection system control panel 1 has a 1st mounting information output circuit 3 that transits 1st mounting information when the selection system control panel 1 is mounted.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to an input signal selection system, and more particularly to an input signal selection method and an input signal selection system when a selection control panel is not mounted.

[0002]

2. Description of the Related Art Conventionally, in this type of input signal selection system, input signal system selection is performed based only on system selection information from a selection system control panel.

FIG. 6 is a block diagram showing an example of a conventional input signal selection system. In FIG.
1 includes a selector (SEL) control unit 2. Each of the system selection units 56-1 to 56-n (where n is a natural number, hereinafter, a case where any one is taken out is indicated by reference numeral 56) includes a selector (SEL) 7. From this SEL control unit 2,
The system selection information of the input signals 4 and 5 is transmitted to each system selection unit 56, and each system selection unit 56 selects the input signals 4 and 5 by the selector 7 based on the received system selection information.

[0004]

However, if the system selection unit 56 is inserted or removed when the selection system control panel 1 is not mounted, the system selection information indicating the system to be selected from the selection system control panel 51 correctly. However, there is a drawback that the input signal is not input or information for selecting the input signal cannot be obtained, and the system selection of the input signal becomes unstable.

Therefore, a technical problem of the present invention is that even when a single system selection unit is inserted / extracted when the selection system control panel is not mounted, the case other than the case where two adjacent system selection units are simultaneously inserted / extracted is performed. It is an object of the present invention to provide an input signal selection method and an input system signal selection system for surely selecting an input signal system.

[0006]

According to the present invention, when a selection system control panel and an adjacent system selection unit are not mounted, when the system selection unit is inserted and removed, another system selection unit is inserted. The input signal selection method is characterized by selecting the same system according to the system selection information and starting up.

Further, according to the present invention, each system selection unit monitors the system selection state of an adjacent system selection unit, so that if a system selection error occurs, it is possible to easily identify the occurrence location. There is provided an input signal selection method characterized in that the selection state is always kept normal by replacing a faulty part.

Further, according to the present invention, a selection system control board having a selector control unit for transmitting first system selection information, and a selection of an external input signal based on the first system selection information. In the input signal selection system including a plurality of system selection units having a first selector, the selection system control panel transmits first mounting information when mounting the selection system control panel. An input signal selection system having one mounting information output circuit is obtained.

Further, in the present invention, in the input signal selection system, each of the system selection units transmits second mounting information indicating that each system selection unit is mounted. The first circuit for selecting the input signal based on an output circuit, the first mounting information, and second mounting information from another system selector adjacent to the system selector.
It is preferable that a comparison detection circuit is provided for comparing the system selection information with the second system selection information and outputting a mismatch signal for generating an alarm signal when they do not match.

Further, according to the present invention, in the input signal selection system, each of the system selection units includes second mounting information from another adjacent system selection unit and a third system output to a wired OR. A second selector for selecting one of the selection signals based on the second mounting information and outputting the selected signal as fourth system selection information; a fourth system selection signal and the first system selection signal; And a third selector for selecting any one of them based on the first mounting information and outputting the selected information as fifth system selection information, and transmitting the fifth system selection information to the other system selection unit. It is more preferable that the system further includes a system selection information output unit that outputs the second system selection signal to the wired OR and outputs the third system selection signal to the wired OR.

[0011]

Next, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram showing an input signal selection system according to an embodiment of the present invention.

Referring to FIG. 1, the input signal selection system includes a selection system control panel 1 and n system selection units 6-1 to n (hereinafter, a case where any one is called is indicated by reference numeral 6). Have.

Here, the adjacent system selection unit means a system selection unit 6-i for the system selection unit 6-i where i is a natural number of 2 or more.
(I-1) is called, and when i = 1, the system selection unit 6-n is called, and is commonly denoted by reference numeral 6- (i-1).

The selection system control panel 1 outputs a selector (S) for outputting first system selection information for selecting the input signals 4 and 5.
An EL) control section 2 and a first mounting information output circuit 3 for outputting first mounting information indicating that the selection control panel 1 is mounted.

Each of the system selectors 6 has an input signal 4,
5 to select the first selector (SE)
L), a second selector (SEL) 8, a third selector (SEL) 9, a comparison detection circuit 10, an alarm output unit 11 connected thereto, and a system selection information output unit 1
2 and a second mounting information output circuit 13.

FIG. 1 shows a case where n = 3. In the input signal selection circuits in the system selection units 6-1 to n, the system selection information (hereinafter referred to as second system selection information) output from the adjacent system selection unit 6- (i-1) and its wired The ORed system selection information (hereinafter, referred to as third system selection information) is transmitted to terminals 22- (i-1) and 23- (i
-1) to the system selection unit 6-i.

In each of the system selecting units 6-1 to n, the mounting information output circuit 13 is "mounted".
Mounting information (hereinafter, referred to as second mounting information) indicating whether the information has been mounted or “not mounted” is output from the terminal 21-i.

The second selector 8 is connected to the adjacent system selector 6
One of the second system selection information from the terminal 22- (i-1) of (i-1) and the wired-or third system selection information output from the terminal 23- (i-1) One is selected based on the second mounting information from the mounting information output circuit 13 of the adjacent system selection unit 6- (i-1). That is, the second
Selector 8 selects the second system selection information from the adjacent system selection unit 6- (i-1) when the second mounting information indicates "mounted", and indicates "not mounted". Is selected, select the wired or third system selection information and
Is output as a system selection signal.

The third selector 9 converts one of the input from the second selector 8 and the first system selection information input from the SEL control unit 2 from the selection system control panel 1 to the first system selection information. Select based on implementation information. That is, the third selector 9
Outputs the first system selection information from the selected system control panel 1 as it is when the first mounting information indicates "mounted", and outputs the second system selection information when the first mounting information indicates "not mounted". Selector 8
, Selects the fourth system selection information input from the controller, and outputs it as a fifth system selection signal.

The system selection information output unit 12 connects the terminal 22 to the adjacent system selection unit 6- (i + 1) through the fifth system selection information.
-I as the second selection information and to the wired OR from the terminal 23-i as the third selection information. Further, the system selection information output unit 12 does not perform output until the system selection unit is mounted and the system selection process ends.

The comparison detection circuit 10 is connected to the first system selection information from the SEL control unit 2 and the adjacent system selection unit 6- (i-1).
Are compared based on the first mounting information and the second mounting information, and when they do not match, a mismatch signal is output. However, when each of the first and second mounting information indicates “not mounted”, the comparison detection circuit 10 stops the alarm output as the mismatch signal.

The alarm output unit 11 monitors whether a normal system selection is performed in the adjacent system selection unit 6- (i-1) based on the input of the mismatch signal.

Next, the operation of the input signal selection system of FIG. 1 will be described with reference to FIG.

Referring to FIG. 2, usually, the selection system control unit 1
The first selector information is transmitted from the SEL control unit 2, and the third selector 9 selects the signal from the selector control unit 2 according to the second mounting information from the mounting information output circuit 3. , The system selection unit 6-1 selects the input signals 4 and 5 according to the first system selection information from the selection system control panel 1.

Referring to FIG. 3, since the selection system control panel 1 is not mounted and the first mounting information from the selection system control panel 1 is not input, the third selector 9 of the system selection unit 6-1 has ,
The fourth system selection information, which is an input signal from the second selector 8, is selected. The second selector 8 receives the second mounting information from the mounting information output circuit 13 from the adjacent system selection unit 6-3, and selects the second system selection information from the adjacent system selection unit 6-3. I do.

Referring to FIG. 4, since the first control information is not input from the selection system control panel 1 because the selection system control panel 1 is not mounted, the third selector 9 of the system selection section 6-1 has ,
The fourth system selection information, which is an input signal from the second selector 8, is selected. Further, since the adjacent system selection unit 6-3 is not mounted, the second selector 8 is not provided with the adjacent system selection unit 6-3.
Since the second mounting information from No. 3 is not input, the third system selection information wired or selected is selected.

In the embodiment of the present invention described above, 3
The case where one system selection unit is used has been described, but the number of system selection units is not limited. For example, as shown in FIG. 5, the same operation can be provided even when there are 1 to n system selection units.

[0029]

As described above, according to the present invention, when each system selection unit monitors the system selection state of the adjacent system selection unit, if a system selection error occurs, the location where the system selection error occurs is monitored. It is possible to provide an input signal selection system that can easily identify the input signal and can always maintain a normal selection state by replacing a failed part.

Further, according to the present invention, even if the selection system control panel and the adjacent system selection unit are not mounted, the system selection information of the input signal is retained. It is possible to provide an input signal selection system capable of preventing the system selection from becoming unstable and selecting the same system as another system selection unit and starting up.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of an input signal selection system according to an embodiment of the present invention.

FIG. 2 is a block diagram provided for describing an operation of the input signal selection system in FIG. 1;

FIG. 3 is a block diagram provided for describing an operation of the input signal selection system in FIG. 1;

FIG. 4 is a block diagram provided for describing an operation of the input signal selection system in FIG. 1;

FIG. 5 is a block diagram provided for describing an operation of the input signal selection system in FIG. 1;

FIG. 6 is a block diagram showing a configuration example of a conventional input signal selection system.

[Explanation of symbols]

1,51 selection system control panel 2 selector (SEL) control unit 3 first mounting information output circuit 4,5 input signal 6-1, 6-2,6-3,6-n, 56-1,56-
2, 56-n system selection unit 7 (first) selector (SEL) 8 second selector (SEL) 9 third selector (SEL) 10 comparison detection circuit 11 alarm output unit 12 system selection information output unit 13 2 mounting information output circuit 21-1,21-2,21-3,21-n terminal 22-1,22-2,22-3,22-n terminal 23-1,23-2,23-3, 23-n terminal

Claims (5)

[Claims] When the selection system control panel and an adjacent system selection unit are not mounted, when the system selection unit is inserted or removed, the same system is selected according to the system selection information of another system selection unit. Input signal selection method characterized by standing up. 2. In each system selection unit, by monitoring the system selection state of an adjacent system selection unit, when a system selection error occurs, it is easy to isolate the location where the error occurred, and always replace the fault location by replacing the fault location. An input signal selection method characterized by keeping a selection state normal. 3. A selection system control panel having a selector control unit for transmitting first system selection information, and a first selector for selecting an external input signal based on the first system selection information. In the input signal selection system provided with a plurality of system selection units, the selection system control panel transmits a first mounting information when the selection system control panel is mounted. An input signal selection system, comprising: 4. The input signal selection system according to claim 3, wherein each of said system selection units outputs second mounting information indicating that each system selection unit is mounted. A first system for selecting the input signal based on a circuit, the first mounting information, and second mounting information from another system selecting unit adjacent to each of the system selecting units; An input signal selection system, comprising: a comparison / detection circuit that compares selection information with the second system selection information and outputs a mismatch signal for generating an alarm signal when they do not match. 5. The input signal selection system according to claim 4, wherein each of said system selection units includes second mounting information from another adjacent system selection unit and a third system output to a wired OR. A second selector for selecting one of the selection signals based on the second mounting information and outputting the selected signal as fourth system selection information; a fourth system selection signal and the first system selection signal; And a third selector for selecting any one of them based on the first mounting information and outputting the selected information as fifth system selection information, and transmitting the fifth system selection information to the other system selection unit. And a system selection information output unit that outputs the second system selection signal to the wired OR as the third system selection signal.