JPS62252239A - Connecting switching device for ring shaped transmission line - Google Patents

Abstract

PURPOSE:To easily duplicate or remove a communication equipment (CE), by providing a switch which sets at least selectively a single mode that connects transmission lines from one side, and the other side, to the first CE, and a serial mode that connects between the first and the second CEs with each other. CONSTITUTION:At the intermediate point of a ring-shaped transmission line, a switching device 11 is provided at a node(Node) to which the CE is inserted, and to the device, a transmission line 21 from one side, a transmission line 22 from the other side, the first CE.11, and the second CE.22 are connected, and a system is constituted so that either a direct connecting mode in which the transmission line 21 is connected directly to the 22, the single mode in which the transmission lines 21 and 22 are connected to the CE.11, or the serial mode in which the transmission line 22 is connected to the CE.11, and the transmission line 22, to the CE.12, and also, the CEs 11 and 12 are connected with each other, can be set selectively by respective switch SW1 or SW2. As shown in a dotted line, the duplication of a CE.1a in the neighborhood of a CE.1A, and the removal, or the separation of a CE.1D can be performed freely.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a switching device that is interposed in the middle of a ring-shaped transmission line and switches the number of communication devices connected to a ring-shaped transmission line. .

[Conventional technology]

A communication system using a ring-type transmission line is a LAN (Loc).
It is generally used in communication between communication devices (hereinafter referred to as CE) and personal computers, etc., and the connection of communication equipment (hereinafter referred to as CE) 1A to 1E from the state shown in Figure 1O (4) to the state shown in Figure 1B (B). When changing the order, it is necessary to remove transmission lines 20 to 2E among transmission lines 2A to 2E and install transmission lines 2F to 2H, which increases the required construction cost and discontinues the operation as a whole. This is causing problems that must be met.

As a countermeasure against this problem, as shown in Figures 11 and 12, the distribution board 3 is installed under the floor, etc., and the transmission line 2Ah2A is connected to it.
Concentrate t~2E1%2E2, and when changing from the state shown in Figure 11 to the state shown in Figure 11 (B), deal with it by moving CE 1E and transmission line 2F2ss 2E2 and changing the connection of branch board 3. A method to do this is used.

[Problem that the invention seeks to solve]

However, even with the method of using the branch line board 3, for example, when newly installing CG/1F in FIG. 12, the branch line [31
Since the transmission line 2Fts2F2 wiring is required, the length of the wiring becomes large and the required cost becomes high, and the operation must be stopped while the connection of the distribution board 3 is changed, which causes problems such as inconvenience. .

[Means to resolve the problem]

In order to solve the above-mentioned problem, the present invention is constructed by the following means.

In other words, there is a direct mode in which the transmission line from one side is directly connected to the transmission line from the other side in the middle of the ring type transmission line;
- the transmission path from one CB and the transmission path from the other to the first CB
single mode connection to the first C
CE and a transmission line from the other side to the second CI, as well as a switch for selectively setting at least a serial mode for connecting the first and second CEs.

[Function] Therefore, by selecting the switch, the required settings in each mode are immediately set, and in the direct mode, the %C
E is excluded, whereas in single mode, only the first CE is connected, while in series mode, the first and first CB are connected in series, and c
When installing or removing g, the connection of the transmission line is changed immediately.

〔Example〕

Hereinafter, the present invention will be explained in detail with reference to figures showing examples.

Figure 1 is a basic circuit diagram, showing the node (Mode) where a CE is inserted in the middle of a ring transmission path.
A switching device (hereinafter referred to as NS) 11 is provided,
For this, transmission line 2! from one side! , transmission line 2 from the other side
! , and the first CE salary is 11, the second CE is 2! are connected, and each individual switch SW1, SW! Therefore, transmission line 2! 22 -\directly connected direct mode and transmission line 2! and 22 are connected to Cl1p"Is-\, and the transmission line 21 is connected to CE 11, and the transmission line 22 is connected to cg 1!, and CE 11 and 12 are connected.
It is possible to selectively set either the serial mode that connects the

In other words, switch SW! The main pole “C” is the transmission line 2
1 and the child type "2" of the switch SW1, and the child type "2" of the switch SW, is connected to one terminal of the CE・1°, and the child type 1- of the switch SW,
I J is one terminal of CE・11 and CB・1
The main pole rCJ of switch SW1 is connected to the other terminal of transmission line 2! Since the child type "1" of this is connected to the other terminal of CB・11, if the switch SW1 is set to the child type "2" side, the switch SW
Direct mode is set regardless of the state of CF2.
11.12 is excluded, the switch 8W1 is set to the child type "1" side, and the switch SW2 is similarly set to the child type "1JIIl".
By setting, only the CE 11 is connected to the transmission line 21.
Single mode inserted between 21 and switch S
If W, is the child type flJ@, and switch SW2 is set to the child type "2" side, C"1+ is sent between the transmission lines 2+ and 22.
A serial code is set in which s1g is inserted in series.

Therefore, initially, N511 was inserted into the planned node site where the CE was expected to be installed, set to direct mode, and
・If you connect to N811 and set the single mode in response to the new installation of CE 11, CE 11 will immediately connect to transmission line 11.
Furthermore, when adding CElh, by connecting CB[h and setting the series mode, p, cg
・12 is also connected to transmission line 11.13 along with CE"11, and it will not affect the previous state until you operate switches sw1 and sw after connecting CE・11.1. By operating switches 8W, , 8W, the change is made immediately, which facilitates new installation work and eliminates the need to discontinue operation.

The same applies when both Ca-11 and Ig or CE-12 are removed.

Figure 2 is a circuit diagram when using multi-pole interlocking switch 5W11.If child type 11J is selected, direct mode
When the child type "2" is selected, the single mode is set, and when the child type "3" is selected, the series mode is set as in FIG. 4.

3 and 4 are block diagrams when the N511 shown in FIG. 1 or 2 is applied to the ring-type transmission line shown in FIGS. 10 and 11, and in FIG.
・N511A~1 for each node where IA~1F is inserted
1 is set, and the dotted line indicates υ, CE, 1 person.
Addition of CE・1a to the vicinity of CE・1D
It is up to the individual to remove and disconnect.

Also, in Figure 4, the minute? Each transmission line 2Al, 2A1~2F't, 2F2A, CI-IA~1 from fs board 3
Install each N811A-11F near F, and add fi, CE・1a, and C as shown by the dotted line.
He is responsible for removing and disconnecting E-ID.

Figures 5 and 6 show N811 with more expanded functions.
This is the circuit diagram of the multi-pole interlocking switch S as in Figure 2.
In Fig. 5, in addition to the functions shown in Fig. 2, by selecting slave unit "2", CE-1 is activated using W4 and SW5.
1 is connected, and depending on the selection of slave unit "°3", CE
・1 snow is connected, ri, Cg・11,
12 can be inserted individually.

In addition, in FIG. 6, three Cg・11~1° are accommodated, and only C or 11 is selected by selection of child type “2”, and Ca.1! by selection of child type “3”! Depending on the selection of child type “4”, only CE・13 will be inserted into each individual, and child type “5” will be inserted into each individual.
” for option A, cg*1. and 12, each combination of CE・12 and 13 is inserted in series depending on the selection of child type “6”, and Cg・11 to 13 depending on the selection of child type “7”.

7 and 8 are views showing the external appearance of the N511. In FIG. 7, a self-illuminating interlocking button switcher 17 and an indicator light 18 such as a light emitting diode are installed inside the outer casing 16 with a front cover of 151 km. , Outside I! Derive the transmission paths 2t, 2g and the transmission paths 2a to 2c to Cgφ11 to 13 from the side of 16, and press buttons "1" to "3".
Select each of CE and 11 to 13 individually by pressing the button "
1・2”～“1・2-3J) CFa”
11~in O% combination selection is made and button yl”rn
The direct mode is selected depending on the pressure of ``u''.

In addition, in Fig. 8, a rotary type switch having an insertion groove 22 that can be operated by a driver 21 is used, and this is housed in the outside 1! If the direction of the insertion groove 22 is determined, #! The same selection as in FIG. 7 is made.

FIG. 9 is a side view showing the installation situation, in which a personal computer, etc. placed on a table 32 on the floor 31 is connected to the N5111 fixed to the CE・la'it wall 33, and the ceiling 34 is connected to the CE/1b fire sensor etc.
This is fixed to the ceiling 34 and connected to nine Na11s, and the transmission lines 21 to 23 are connected to N511s and 1'h. The N511z allows the installation of various sensors with communication functions, such as temperature and humidity sensors, and these can be connected through the same ring-shaped transmission path.

Note that N5111 has the shape shown in Figure 7, and N81
The shape shown in FIG. 8 is suitable for 13.

Therefore, in a communication system using a ring-type transmission line, it is easy to install, add, and remove CEs at each node, without interrupting operation, and to ensure that the wiring when installing or adding CEs is easy. As a result, the construction cost for changing the system configuration is reduced.

However, the one in Figure 1 has the minimum configuration and is 146G.
It is also possible to further increase the number of CEs accommodated and select a switch accordingly. Various types of switches can be used, and the configurations shown in Figures 7 and 8 can be determined according to the shape of the switch. It is possible to make a moderate amount of modification.

〔Effect of the invention〕

As is clear from the above explanation, there are nine aspects according to the present invention.

For example, it becomes easy to install, expand, and remove CEs, reducing construction costs, and without interrupting operation, which is significantly effective in various communication systems using ring-shaped transmission lines.

[Brief explanation of drawings]

1 to 9 show embodiments of the present invention, FIG. 1 is a basic table circuit diagram, FIG. 2 is a circuit diagram showing another embodiment, and FIG. 3 is a circuit diagram showing another embodiment.
Figures 1 and 4 are block diagrams adapted from those in Figures 1 or 2, Figures 5 and 6 are circuit diagrams of nine embodiments with expanded functions, and Figures 7 and 8 are external views. , FIG. 9 is a side view showing the installation situation, and FIGS. 1θ to 12 are block diagrams showing the conventional example. 1'+””Is, IA ~1Fs lat 1b
@ @ # aCE (communication equipment), 21-2s, 2A
t, 2At~2F+,,2F2,'l@~2cm m
a m transmission line, 11.11A to 11F, 11t, 11
Yuki 11-sha/NS (switching device), SW, ~8Ws
・Fist...Switch.

Claims (1)

[Claims] A direct mode in which a transmission line from one side is directly connected to a transmission line from the other in the middle of a ring-shaped transmission line, and a single mode in which a transmission line from one side and a transmission line from the other side are connected to a first communication device. and a series mode in which the transmission path from the one side is connected to a first communication device, the transmission path from the other side is connected to a second communication device, and the first and second communication devices are connected to each other. What is claimed is: 1. A connection switching device for a ring-shaped transmission line, comprising a switch for at least selectively setting .