JPH0398200A - Separated signal display device - Google Patents

Abstract

PURPOSE:To enable display without exchanging the connection of a signal different from a signal to be currently displayed by inputting the entire respective signals, which number is same as the number of plural respective signal transmission lines, to one common signal transmission line to be connected with a signal processing part, extracting the arbitrary respective signal and displaying it. CONSTITUTION:The entire respective signals 20a-20c, the number of which is the same as the number of plural respective number transmission lines 15a-15c, to be respectively transmitted by the transmission lines 15a-15c are inputted to the other end of one common transmission line 16 by a signal input means 13 and out of all the respective signals 20a-20c to be transmitted to the signal input means 13 and the common signal transmission line 16, one arbitrary respective signal is extracted. Then, an amount to be expressed by the signal is displayed in a display means 28. Thus, since the plural respective signals 20a-20c can be switched and displayed to the display means 28 while connecting the display means 28 to the common signal transmission line 16, the signal different from the signal to be currently displayed in the display means 28 can be displayed without exchanging the connection of the display means 28.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention... In industrial plants such as water treatment equipment. The individual signals between a large number of signal transmitters such as an R amount transmitter and a liquid level transmitter and a signal processing device that receives a large number of individual signals output from these transmitters and monitors and operates the plant. It is installed in the middle of a signal transmission line that transmits signals. A separate signal display device that displays the quantity represented by m-separate signals, especially. The present invention relates to a device that can extremely easily display each individual signal without interfering with the operation of a signal processing device.

[Conventional technology]

FIG. 3 is a structural diagram of the main parts of an industrial plant 2 equipped with a conventional separate signal display device [1]. In the figure, 3a, 3b,
3c are respectively liquids 4a. 4b. 4C is flowing through all pipes, 5g is the flow rate Qa of liquid 4a flowing through pipe 3m.
6a is a flow rate transmitter that detects the flow 11Qa and outputs a fill signal 6al according to the detection result; 5b is a flow rate transmitter that detects the flow 11Qa of the liquid 4b flowing through the pipe 3b;
6b is a flow rate transmitter that detects the flow rate Qb and outputs a flow rate signal 6bl according to the detection result. In addition, 5c is a manually operated valve that adjusts the flow QC of the liquid 4C flowing through the pipe 3C.
c is a current oscillator configured to detect the current @Qe and output a current i signal 6CI according to the detection result.

7 is installed in the plant monitoring plan 8 and the signal 6aI. 6b
In this case, the central signal processing device receives the input signals 1 and 6CI and concurrently monitors the operating state of the industrial plant 2 and controls the operation of the plant 2K via a mechanism not shown. All of the flow rate signals 6al to 6C1 are current signals. Then SRa. Rb*
RC is signal 6ho 1.6bl. Each signal transmission line 91.9b*9CK of 601 is installed and these [flow signal 6
The signal display device 1 described above is a current voltage conversion resistor that converts each of 81 to 6C1 into a voltage signal.
This is a display device that displays the flow rate Qsi by detecting the voltage across a. The display device 1 is . in this case. The terminals 9aL9a2FC@YezaiKFa provided on the signal transmission path 9m are connected. Also. in this case. Signal transmission path 9b. Terminal 9bL 9b21 as shown in 911m
9CL 9c2 6”h is provided, display equipment is counterfeit.
to terminal 9bl. Between 9B2 or terminals 9C1 and 9C2 K
By connecting the device @IKfM quantity Qb or Qc
It is also possible to display. 10 is valves 51 to 5C and 9u3a to which these valves are attached.
30 parts and a resistor 1 {. This is a valve operating station where the a-Re and each part of the signal transmission paths 9a to 9C in which these resistors are installed are centrally arranged. 53 to 5C are manually operated to efficiently adjust the °C flow IQI-QC. Thus, the operation center IO is a facility installed in a different location from the plant monitoring room 8.

[Departure F! The problem that A tries to solve]

In FIG. 3, the display device 1 is constructed as described above, and the display device f! tl, for example, the city corresponding to signal 6al. Because only one signal such as the EE signal is input. For example, if you want to operate valve 5b in the state shown in Figure 3,
There is a need to change the connection of the display device 1. In other words, the display device IK. If you try to display a signal other than the current input signal, you will have to change the connection of the device. There is a problem in that it is not possible to quickly respond to changes in the signal to be displayed.

The purpose of this invention is. When displaying a signal different from the one currently displayed, it is possible to do so without having to switch vI1. An object of the present invention is to obtain a separate signal display device that can quickly respond to changes in signals to be displayed.

[Means to solve the problem]

In order to achieve the above object, according to the present invention, all of the individual signals of the same number as the individual signal foreclosure paths that are individually transmitted by each of the plurality of individual signal transmission paths are connected to a decoding processing section at one end. ft of one common signal transmission path connected to bt!
! An arbitrary one of the individual signals is extracted from all the individual signals transmitted through the signal input means inputted at the terminal, the signal input means and the common signal transmission path, and the extracted individual signal is shown in Table-t. a separate signal display device comprising a display means for displaying an amount, wherein all the individual signals are signals sequentially input to the common signal transmission path in a time series manner through the signal input means; Further, the signal processing section performs predetermined signal processing on all the individual signals inputted via the common signal transmission path, thereby configuring a separate signal display device.

[Effect]

When the structure is modified as described above, the display means is connected to the common signal transmission line V.
C11 It is possible to switch and display a plurality of individual signals on the display means while the signal is connected, and when displaying a signal different from the signal currently displayed on the display means, it is possible to avoid connection of the display means. It is clear that there is no need to do this. In addition, since the input operation of the individual signals input to the signal processing section is not hindered by the operation of the display means, the separate type signal can quickly respond to changes in the individual signals to be displayed without interfering with the operation of the signal processing section. A display device will be obtained.

[li! Example]

FIG. 1 is an explanatory diagram illustrating the structure of an embodiment of the present invention. In Figure 1. lla. llb. IIC is the flow detection transmitter 6a. Both fM bone transmitters are compatible with 6b and 6e. Reference numeral 12 denotes a central signal processing device installed in the plant viewing room 8, which is compatible with the aforementioned signal processing device 7. 13 and 14 are optical signal coupling n. In the main body of the display W. 15a. 1
5b. 15c are the flow and transmitter eyes a. IIL 11
Both optical cables connect each of C and coupler l3. 16 is an optical cable connecting the coupler I3 and the signal processing device 12, 17 is the coupler 13 and the display device main body l4
And! It is a continuous optical cable. &18 is the optical signal combiner 13, the display device main body 14, and the optical cable I7.
In this case, of course, the optical cable 17 is provided at the valve operating station 10.

Note that FIG. 1 is shown for convenience of explanation. The aforementioned pipe lines 3a to 3C and valves 5a to 5C that constitute the industrial plant 2
has been omitted. Further, the signal processing device 12 is connected to the plant 2.
It is provided to monitor the operating state of the plant 2 and to operate the plant 2 via a mechanism not shown.

Then, furthermore. In Figure 1, the optical signal coupler 1
3 are connected to the coupler 13tCli, all the optical cables 15m, 15b. 15Ce 16@17 The optical signal input to the coupler 13K from one of the optical cables is outputted to all the remaining optical cables. The flow rate transmitter 11a is activated when the call signal 19m appears in the optical signal that enters the transmitter 11aVC via the optical cable 151. It is configured to detect this signal 19a and immediately output a flow rate signal 201 as an optical signal corresponding to the aforementioned flow rate signal 6mlK to the optical cable 155l. Also. r! When the call signal 19b appears in the optical signal input to the transmitter 1lb via the optical cable 15b, the t quantity transmitter 5iib detects this signal 19b and immediately transmits the flow rate as an optical signal corresponding to the aforementioned flow rate signal 6bllC. It is configured to output the signal 20b to the optical cable 15bVc. When a calling signal 19C appears in the light beam incident on the transmitter 11cIc via the optical cable 15C, the smoothing oscillator 11G receives the call signal 19C. This signal 19
Immediately after detecting the flow rate signal L, the flow rate signal 20Ctt optical cable 15CK corresponding to the above-mentioned inflow A No. 1 6CIK is detected.
It is configured to emit light.

Also, in this case, the signal processing device 12. The operation of emitting one of the calling signals 198 to 19C to the optical cable 16K every time a predetermined period of time elapses is repeated for the three signals 193 to 19C, and then the signal processing device 12 is signal 198~19G
As a result of outputting the signals to the optical cable 16, these signals 193
~19C enters the transmitter 11a-1IC via the coupler 13 and the optical cables 15a-15c, and is emitted from these transmitters 011a-IIC. signal 19
a to 19e and follow the path in the opposite direction to the signal processing device [12
The system is configured to perform predetermined signal processing for each of the flow rate signals 20a to 20C incident on the plant 2 to operate the plant 2 described above. moreover. In Figure 1. The above-mentioned series of operations from when one of the signals 19a to 19C is output from the processing device 12 to the optical cable 16 to when the above-mentioned flow rate signal bs corresponding to this calling signal κ enters the processing device 12 has a period τ.
Each part b'' is constructed so as to be carried out within the same period.

The display device main body section 14 described above is constructed as described below.

In other words. FIG. 2 is a detailed configuration diagram of the display device main body section 14. In the figure. Reference numeral 21 denotes a photoelectric conversion unit that converts an optical signal input via the optical cable 17 into an electric signal 21a.

Then, in this case, the electrical signal 21ab'' - the calling signals 223 to 22 as electrical signals corresponding to the calling signals 1911 to 19C described above, respectively, and the aforementioned flow g.
It is clear from the above that the signal includes the flow rate signals 233 to 23C as electrical signals corresponding to the k signals 20a to 20C, respectively, and in this case,
Each of the flow rate signals 232-230 is . Flow rate transmitter 11
Pulse train address code signals representing addresses assigned in advance to each of IICs 8 to IIC are signals 23a to 23.
3C, and after this address code signal, each of the above-mentioned flow rates Qa, Qb, Qc t.
A pulse train-like fItfl code signal b1 corresponding to LK is arranged, and both of them are pulse train code signals. Each signal n*b' of the above-mentioned stream 2 signals 20a to 2OC is input to the converter 21 via the optical cable 17.

24 is an address setting operation 25 for selecting one flow rate transmitter 11X from the flow rate transmitters 11a to IIC from the outside, and the above-mentioned address bt of the flow rate transmitter 11X selected by the operation 25 is set. The electric signal 21a is always input to the address setting section 26, and the address setting section 24 is connected to this signal 21al4'l.
When the flow signal 23K, which is one of the flow signals 23a to 230 that generates the above-mentioned address code signal representing the same address as the address set in , appears, this signal 23X
A display signal generation section that performs predetermined signal processing such as performing predetermined calculations on the above-mentioned misplaced code signal included in κ and outputs a display signal 26a according to the result. Reference numeral 27 denotes a display device that, when the display signal 26a is input, updates the content IC corresponding to the current display content 01 signal 26a.

Then, this display 2 7 1! )% The displayed content is the flow rate value expressed in industrial units such as (:i/S).
It is composed of the parts shown in the figure.

As for the VC button in FIG. 1, the separate signal display device f118 is constructed as described above. The Of number processing device ffil2 sequentially emits call signals 19a to 190, and as a result, call signals 20a to 20 are transmitted through the optical cable 16.
0 and performs predetermined signal processing for operating the plant 2 on these signals 20a to 20C. In this case, the address setting section 24N: the desired above-mentioned flow rate transmitter 1.
By adding the setting operation 25 to select 1
2 above-mentioned signal processing behavior f'+l: without being affected. Flow rate value Qa represented by each of the flow signals 20a to 20C
, Qb, and Qc are displayed on the display 27. It is obvious that b = possible b = obvious. 01, the above-described display device 18 can be said to be a separate signal display device that can quickly respond to changes in the output signals 20a to 20C to be displayed without interfering with the operation of the central signal processing device 12.

In addition. Since the signal display device fil8 is configured as described above. in this case. The optical cable 16 is 161K at one end.
A central signal processing unit 12b"-11 is connected as a signal processing unit. It forms one common signal transmission path for the flow rate signals 201 to 20C, and an optical signal combiner 136
'-The signal input means for inputting all of the Rlk signals 20a to 20C to the other end 16bK of the optical cable l6 is modified, and the optical signal coupler l3 and the optical cable 16 are connected to the optical cable l7 and the display device main body l4ε. It can be said that a display means 28 is formed which extracts any one flow rate signal from all the transmitted flow rate signals 201 to 20C and displays the flow rate value representing the extracted style signal b1.

In the above-described embodiment 18K, the optical cable 17 is connected to the optical coupler 13, but in the present invention, the optical cable 17 is connected to an optical branching unit Kl provided in the middle of the optical cable l6. It may also be connected in the middle of I7.

Also. In the above-mentioned example 18, the flow rate transmitter h's 1 1
6% assuming that three of a to 11C are installed in plant 2. The present invention is not limited to such an embodiment of the plant 2, and the number of flow rate transmitters may be two or four or more, and Vc, in the present invention, the flow rate transmitter may be set to two or four or more, and in the present invention, the flow rate transmitter is 20C may be a signal representing a quantity other than the flow rate.

〔Effect of the invention〕

As described above, in the present invention, all of the individual signals, the same number of which are individually transmitted by each of the plurality of individual signal transmission paths, are transmitted individually by each of the plurality of individual signal transmission paths. A signal input means for inputting to the other end of one common transmission path connected to a signal processing unit 61 at one end, and an arbitrary one individual signal input from all the individual signals transmitted through this signal input means and the common signal transmission path. A separate signal display device comprising a display means for extracting a signal and displaying the amount represented by the extracted individual signal, wherein all the individual signals are transmitted to a common signal transmission path in time series via a signal input means. The separate signal display equipment was constructed in such a way that the signals were sequentially input to the system, and the signal processing unit performed predetermined signal processing on all the individual signals input through the common signal transmission path. .

For this reason. Constructed as above. It is possible to switch and display a plurality of individual signals on the display means while the display means is connected to the common signal transmission line K, and when displaying a signal different from the signal currently being displayed on the display means. FI of the display means! ! It is clear that a replacement is necessary. Furthermore, since the input operation of the individual signals input to the signal processing section is not hindered by the operation of the display means, the present invention allows quick response to changes in the individual signals to be displayed without interfering with the operation of the signal processing section. There is an effect 01 that a separate signal display device fff can be obtained.

[Brief explanation of drawings]

Fig. 1 is an explanatory diagram illustrating the configuration of an embodiment of the present invention, Fig. 2 is a detailed composition diagram of the main parts in Fig. 1, and Fig. 3 is an explanatory diagram illustrating the problems of a conventional separate type signal display device. It is. 1.18... Separate signal display device - 6aL
6bls6C1.20al 2ob. 20C--Flow control signal (individual signal) 212...Central signal processing unit? (signal processing section), 13... optical signal coupler (signal input means). 15a# 15b. 15C...
...Optical cable (individual signal transmission line). 16...
Optical cable (common signal transmission line), 28...Display means. Tsutakuni no 0 Ka 3 Kou Atsushi 2 Sen

Claims (1)

[Claims] 1) All the individual signals of the same number as the individual signal transmission paths, which are individually transmitted by each of the plurality of individual signal transmission paths, are transferred to the other end of one common signal transmission path to which a signal processing section is connected at one end. extracting any one of the individual signals from all of the individual signals transmitted through the signal input means and the common signal transmission path, and displaying the quantity represented by the extracted individual signal; A separate signal display device comprising: a display means for displaying the signals, wherein all of the individual signals are signals that are sequentially input to the common signal transmission path through the signal input means; A separate signal display device, characterized in that the processing section performs predetermined signal processing on all of the individual signals input via the common signal transmission path.