JP2011113368A - Monitor control system for water treatment plant - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To start and stop incidental facilities such as a conveyer and a pump on a timely basis in a monitor control system for water treatment plant. <P>SOLUTION: The monitor control system for a water treatment plant includes: a plurality of on-site boards 2<SB>11</SB>-2<SB>1n</SB>which are provided in correspondence with the respective incidental facilities of processing tanks installed on the site where the processing tanks 1<SB>1</SB>-1<SB>n</SB>are installed and perform start and stop operations of corresponding incidental facilities by touch panels 2<SB>11A</SB>-2<SB>1nN</SB>, a process control board 31 which is installed in the processing tank, and performs automatic monitor control so that an appropriate operation in water treatment can be performed by the incidental facilities based on the output of various water treatment sensors and a process control board side touch panel 32 on which any start or stop operation can be performed, of start and stop operations of the corresponding incidental facilities by the respective touch panels of the on-site boards. The monitor control system can perform start and stop operations of the corresponding incidental facilities by the touch panel of each on-site board, and also perform a start or stop operation of any incidental facility of the plurality of incidental facilities by the process control board side touch panel. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a water treatment plant monitoring control system that performs monitoring control of a water treatment plant such as a water treatment facility or a sewage treatment facility.

  Conventionally, in water treatment plants such as water treatment facilities and sewage treatment facilities, tanks or ponds for performing some water treatment such as water intake, storage, precipitation, aeration and filtration (hereinafter collectively referred to as “treatment tanks” for convenience) ) Is installed on the site where conveyors, pumps, valves (valves), etc. are installed as ancillary equipment for processing tanks, and on-site panels for monitoring and operating these equipment are installed. In addition, each accessory device is based on the output of a sensor such as a water level meter, pH meter, concentration meter, temperature meter, etc. (hereinafter, these sensors are collectively referred to as “water treatment sensor” for convenience). Automatic monitoring control is performed by the process control panel so that the auxiliary equipment is properly operated.

  In such a water treatment plant monitoring and control system, conventionally, a touch panel has been employed for the field panel, and communication of process signals, control signals, and the like between the field panel having the touch panel and the process control panel is made communication. Thus, a technique for reducing the number of communication cables between the field panel and the process control panel is shown. (For example, Patent Documents 1 and 2)

JP-A-8-23585 (FIG. 2 and explanation thereof) JP-A-8-234834 (FIGS. 1, 2 and description thereof)

The water treatment plant is a facility related to social infrastructure and requires high reliability.
In addition, the water treatment plant is vast, and operations of auxiliary equipment such as conveyors, pumps, valves, etc. in multiple water treatment tanks (ponds) are performed by limited personnel patrols. A plant monitoring control system is preferable.

  In addition, when the techniques shown in Patent Documents 1 and 2 are applied to the water treatment plant monitoring and control system, there is a problem that the operation of the incidental equipment cannot be performed in a timely manner depending on the position of the patrolman during the patrol. . Moreover, when using the field panel which has a touch panel outdoors, the visibility of the touch panel under sunlight becomes a problem. In addition, there is a problem that the emergency stop operation of the incidental device cannot be performed in a situation where an abnormality occurs in the communication device constituting the communication transmission path between the on-site panel and the process control panel. In addition, if it takes time to recover from an abnormality in a communication device, there is a problem that the daily operation is hindered.

  Since the electronic devices that make up communication equipment tend to have a higher failure rate in general than when a system is constructed with electrical equipment, water treatment plant monitoring and control that can operate auxiliary equipment even when communication equipment is abnormal A system is preferred.

  The present invention has been made in view of the above-described circumstances, and an object of the present invention is to enable timely operation and stop of incidental equipment.

The water treatment plant monitoring and control system according to the present invention is provided in correspondence with each incidental device of the treatment tank installed at the site where the treatment tank is present, and performs a plurality of operations for operating and stopping the corresponding accessory by a touch panel. On-site board, process control board that automatically monitors and controls so that proper operation is performed on the water treatment by the auxiliary equipment based on the output of various water treatment sensors installed in the treatment tank, and each on-site board Each of the touch panels is provided with a process control panel-side touch panel that can perform any of the operation and stop operations of the operation and stop of the corresponding accessory device. Operation can be performed, and operation and stop operation of any of the auxiliary devices can be performed by the process control panel side touch panel. .

  The present invention provides a plurality of on-site panels that are provided corresponding to each auxiliary device of the processing tank installed at the site where the processing tank is located, and perform operations of operating and stopping the corresponding auxiliary device by a touch panel, and the processing tank A process control panel that automatically monitors and controls so that proper operation is performed on the water treatment by the auxiliary equipment based on outputs of various water treatment sensors, and the corresponding auxiliary equipment by each touch panel of each on-site board A process control panel-side touch panel that can perform any of the operation and stop operations of the above-mentioned operation and stop operations. Since the side touch panel can be used to operate and stop any of the auxiliary devices, the auxiliary device can be operated and stopped in a timely manner. There is that effect.

BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows Embodiment 1 of this invention, and is a figure which shows an example of the system structure which modeled the schematic structure of the whole water treatment plant monitoring control system. BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows Embodiment 1 of this invention, and is a figure which shows an example of the system configuration which modeled the signal system of the principal part of the water treatment plant monitoring control system. BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows Embodiment 1 of this invention, and is a figure which shows an example of the system configuration which modeled the operation and the display system of the principal part of a water treatment plant monitoring control system. BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows Embodiment 1 of this invention, and is a figure which shows an example of the field panel of an outdoor specification with an external view, (a) Front view of whole, (b) is a partial side view. It is a figure which shows Embodiment 2 of this invention, and is a figure which shows the other example of the system configuration which modeled the signal system of the principal part of the water treatment plant monitoring control system. It is a figure which shows Embodiment 3 of this invention, and is a figure which shows the further another example of the system configuration which modeled the signal system of the principal part of the water treatment plant monitoring control system.

Embodiment 1 FIG.
Embodiment 1 of the present invention will be described below with reference to FIGS.

As shown in FIG. 1 as an example of a system configuration that schematically illustrates the overall configuration of the water treatment plant monitoring and control system, in water treatment plants such as water supply facilities and sewage treatment facilities, water intake, storage, sedimentation, and aeration There are a plurality of tanks or ponds for performing some kind of water treatment such as filtration (hereinafter, these are collectively referred to as “treatment tanks” for convenience). First, second, third, fourth, treatment tank ₁ 1... The _n, 1 _{2, 1 3,} 1 4, the site where there is ... _{1 n,} a conveyor, a pump, a valve ( Valves) and the like are attached to processing tanks (not shown in FIG. 1), and these auxiliary devices are on-site panels 2 ₁₁ , 2 ₁₂ , to 2 _1n , 2 ₂₁ for monitoring and operating them. , 2 ₂₂ , ... 2 _2n , 2 ₃₁ , 2 ₃₂ , ... 2 _3n , 2 ₄₁ , 2 ₄₂ , ... 2 _4n , ... 2 _n1 , 2 _n2 , ... 2 _nn are installed is, electric chamber _{3 1,} 3 2, · · · _{3 n} is the processing bath _{1 1,} 1 _{2, 1 3,} 1 4, is placed in correspondence with one more or one of · · · _{1 n,} wherein A central monitoring room 4 is installed corresponding to the plurality of electric rooms 3 ₁ , 3 ₂ ,... 3 _n .

The treated water to be treated (river water or lake water in the case of clean water, sewage in the case of sewage) is the first, second, third, fourth,... Nth treatment tanks 1 ₁ , 1 _2. , 1 ₃ , 1 ₄ ,..., 1 _n , the necessary treatment is performed in each treatment tank, and the water is sent through the water supply channel 5.

In the central monitoring control device (not shown) in the central monitoring room 4, the first, second, third, fourth,... Nth treatment tanks 1 ₁ , 1 ₂ , 1 ₃ , 1 ₄ ,. · 1 _n each and information operational state including the stop incidental equipment, water level gauge, pH meter, densitometer, temperature measuring device, sensor and the like (hereinafter, for convenience collectively "water treatment sensors these sensors "to as) (output or the like in FIG. 1, not shown), the status information of the plant each part, from the electric chamber _{3 1, 3 2, ··· 3} n within the process control board (not shown in FIG. 1) Collect and comprehensively monitor and control the entire plant.

The process control panel in each of the electrical chambers 3 ₁ , 3 ₂ ,... 3 _n receives the output of the water treatment sensor and the information on the operating state of the auxiliary device, and the first, second, second 3, 4, treatment tank ₁ 1... the _n, 1 _{2, 1 3,} 1 4, to the automatic driving control said accessory device in accordance with the state of ... _{1 n.}

Next, the case of the water supply to the case, and mainly the process control board and field plate intended for the electric chamber 3 ₁ in FIG. 1, will be described with reference to FIG.

2, so that the signal line of a main part of the water treatment plant monitoring and control system is shown an example of a system configuration schematizes, in the electrical chamber 3 in _1, wherein the process control board 31 is provided .

Rivers, dams, lakes, to the intake water tank (pond) the first treatment tank 1 ₁ beside it is from water sources such as the fountainhead is, pieces of wood, leaves, bottles, cans, conveyor 11A carrying the garbage such as plastic bottles the established as the service appliance in the treatment tank, the field plate ₂₁₁ of the portable in the vicinity of the conveyor 11A is installed.
The first treatment tank 1 ₁ from the second treatment tank 1 ₂ pump 12 for water treatment water _(see FIG. 1) is installed as the service appliance of the processing bath, portable field plate in the vicinity of the pump 12N 2 _1n is installed.

A process control unit 310 built in the process control panel 31 includes a power supply unit 311, a CPU unit 312, a CC-Link communication unit 313, an RS422 communication unit 314, a digital input 315, and a digital output 316. CC-Link communication is a well-known communication method, and “CC” is an abbreviation for Control & Communication.

A touch panel 32 is installed as an accessory device of the process control unit 310. The touch panel 32 via the RS422 communication channel _{3 132} communicates with RS422 communication unit 314 performs transmission and reception of necessary information with the RS422 communication unit 314.

Site Release _{2 11} includes a touch panel _{2 11A,} display control and communication control unit _{2 11Dc,} LED indicator _{2 114} emergency stop operation operation switch _{2 113,} and emergency stop operation check.
The touch panel _{2 11A} via the RS422 communication line _{2 11c,} communicates with the display control and communication control unit _{2 11Dc,} transmitting and receiving the display control and communication control unit _{2 11Dc} and necessary information.
The display control / communication control unit 2 _{11 dc transmits} / _receives necessary information to / from the CC-Link communication unit 313 via the CC-Link communication path 3 ₁₃₁ . The operation switch 2 ₁₁₃ for emergency stop operation is directly connected to the digital input 315 by the direct transmission electric signal line 2 ₁₁₅ without using a communication device such as the display control / communication control unit 2 _{11 dc} or the CC-Link communication unit 313. Yes.
The LED indicator lamp 2 ₁₁₄ for confirming the emergency stop operation is directly connected to the digital output 316 by the direct transmission electric signal line 2 ₁₁₆ without using a communication device such as the display control / communication control unit _{211 dc} or the CC-Link communication unit 313. Has been.

The on-site panel 2 _1n includes a touch panel 2 _1nN , a display control / communication control unit 2 _1ndc , an operation switch 2 _1n3 for emergency stop operation, and an LED indicator light 2 _1n4 for checking an emergency stop operation.
The touch panel _{2 1 nN} via the RS422 communication line _{2 1nc,} communicates with the display control and communication control unit _{2 1Ndc,} transmitting and receiving the display control and communication control unit _{2 1Ndc} and necessary information.
The display control / communication control unit 2 _{1ndc transmits} / _receives necessary information to / from the CC-Link communication unit 313 via the CC-Link communication path 3 ₁₃₁ .
The operation switch 2 _1n3 for emergency stop operation is directly connected to the digital input 315 by the direct transmission electric signal line 2 _1n5 without using a communication device such as the display control / communication control unit 2 _1ndc or the CC-Link communication unit 313. Yes.
The LED indicator light 2 _1n4 for confirming the emergency stop operation is directly connected to the digital output 316 by the direct transmission electric signal line 2 _1n6 without using the communication device such as the display control / communication control unit 2 _1ndc or the CC-Link communication unit 313. Has been.

Further, in FIG. 3, so that the operation and display system of the main part of the water treatment plant monitoring and control system is shown an example of a system configuration schematizes, the touch panel 2 _11A-site Release 2 ₁₁ is the operation target A The operation right changeover switch 2 _11A1 for selecting and setting the operation right of operation / stop of the conveyor 11A by selecting either “on-site” or “electric room”, and selecting either “operation” or “stop” An operation switch 2 _11A2 for performing a “run” operation of 11A or a “stop” operation of the conveyor 11A is provided.

The touch panel 2 _1nN of the on-site panel 2 _1n is an operation right changeover switch 2 _1nN1 for selecting and setting either “on-site” or “electrical room” as the operation right of the pump 12N that is the operation target N. And an operation switch _21nN2 for selecting either “operation” or “stop” to perform “operation” operation of the pump 12N and “stop” operation of the pump 12N.

The touch panel 32 of the process control panel 31 has an operation right changeover switch 32 _A1 for selecting and setting the operation right for operation / stop of the conveyor 11 </ b> A as the operation target A by selecting either “site” or “electric room”. Operation switch 32 _A2 for selecting either “operation” or “stop” to perform “operation” operation of the conveyor 11A or “stop” operation of the conveyor 11A, operation of operation / stop of the pump 12N that is the operation target N Operation right changeover switch 2 _1nN1 for selecting and setting one of “site” and “electric room”, and “operation” operation of pump 12N by selecting either “operation” or “stop”, pump An operation switch 2 _1nN2 for performing a “stop” operation of 12N is provided.
That is, on the touch panel 32 of the process control panel 31, any operation right or stop of the operation objects A to N can be selected, and any “operation” or “stop” of the operation objects A to N can be selected and operated. It is.

The process control unit 310 of the process control board 31 of the electric chamber ₃ in _1, operation subject A (conveyor 11A) operation right storage memory for (site - electrical chamber) 317A, and the operation target N (pump 12N) operation for A right storage memory (site-electric room) 317N is provided.

Operation right storage memory - The (site electrical chamber) 317A, the touch panel 32 of the process control board 31 of the field plate _{2 11} touch panel _{2 11A} or electric chamber _{3 1} of the operation right of the operation target A is set the setting The contents are stored, and on the touch panels _211A and 32, according to the stored contents, the display of “site” or “electric room” to which the operation right is set becomes a display that can be identified by, for example, white display.

Operation right storage memory - The (site electrical chamber) 317N, when the touch panel 32 of the process control board 31 of the field plate _{2 1n} of the touch panel _{2 1 nN} or electric chamber ₃ in ₁ operation right of the operation target N is set the setting The contents are stored, and on the touch panels 2 _1nN and 32 according to the stored contents, the display of “site” or “electric room” to which the operation right is set becomes a display that can be identified by, for example, white display.

4, as is shown an example of a field plate 2 ₁₁ outdoor specifications in external view, the field plate ₂₁₁ can be opened and closed eaves 2 ₁₁₇ upper end is pivotally mounted to the body of is provided.
Eaves _{2 117} covers the touch panel _{2 11A} close as in FIG. 4 (a), when opened at an arbitrary angle as shown in Figure 4 (b) when the touch panel _{2 11A} used, direct sunlight to the touch panel _{2 11A} the interception, it is possible to ensure the visibility of the touch panel 2 _11A.
The other field plate _{2 11, 2 12, ~2 1n} , 2 21, 2 22, ··· 2 2n, 2 31, 2 32, ··· 2 3n, 2 41, 2 42, ··· 2 _{4n, ··· 2 n1, 2 n2} , ··· 2 nn is also configured similarly, exhibits the same functions and effects.

Other electric chamber 3 _2, ... 3 _{may n} intended for the above-described FIG. 2, FIG. 3, configuration and functions as those in FIG. 4 is essentially electrically chamber 3 ₂ of these other are the _same, ... - 3 description of the case intended for the _n will be omitted.

Next, specific operations and operations will be described with reference to FIGS.
Water treatment, as described above, although automatic operation by the process control board 31 of the electric chamber 3 _1, the water from the example when abnormality of the water treatment sensor can not monitor the measurement signal in the process control board 31 When the processing sensor is abnormal, proper automatic operation cannot be performed. Therefore, it is necessary for the patrolman to go around the site and discriminate an abnormal state by visual or auditory sense.

For example, in the case of performing the inspection of the conveyor 11A, patrol members and other workers, in the touch panel 2 _11A of the field plate 2 _11, the operation right of operation and stopped by the operation right change-over switch 2 _11A1 to the "on-site", pressing And select “Stop” by the operation switch _211A2 . The information selected by pressing is input to the CC-Link communication unit 313 of the process control panel 31 via the RS422 communication path 2 _11c , the display control / communication control unit 2 _{11 dc} , and the CC-Link communication path 3 ₁₃₁ for process control. The board 31 stops the conveyor 11A.
After inspection, if possible operation of the conveyor 11A, in a state where the operation right is selected "on-site", be selected by pressing the "operation" by the operation switch 2 _11A2 of the touch panel 2 _11A, the information at stop Are input to the CC-Link communication unit 313 of the process control board 31 and the process control board 31 activates the conveyor 11A.

Since automatic operation cannot be performed due to an abnormality in the water level sensor or the like, in a state where the pump 12N needs to be manually operated, the on-site panel _21n is operated in the same manner as the conveyor 11A described above, and the process control panel 31 and the process control panel 31 The investigation object N on the touch panel 32 performs the same operation as described above.

If the patrolman decides that it is better to stop a certain incidental device, for example, the conveyor 11A, because the amount of generated dust is small due to a comprehensive judgment during the patrol, the place where the judgment is made is from the conveyor 11A. If far rather close to the electric room _{3 1,} patrol personnel on the touch panel 32 of the electric chamber ₃ in _1, operation right selector switch _{32 A1} investigation subject a, using the operation switch _{32 A2,} stopping the conveyor 11A Is possible, and proper operation is performed at an early point.

Next, for example, in an emergency situation in which an operator is caught in the conveyor 11A, it takes some time to operate the touch panel _211A, and the stop of the conveyor 11A is delayed, and communication equipment (display control)・ If the communication control unit 2 _11dc , CC-Link communication unit 313, etc.) is abnormal, the conveyor 11 _< / b _> A may not stop, so in an emergency situation, operate the operation switch 2 ₁₁₃ for emergency stop operation. For example, there is no need to make various selections, and the conveyor stop command is directly input to the digital input 315 via the direct electric signal line 2 ₁₁₅ without passing through the communication device, so the conveyor 11A can be quickly moved without delay. can be stopped, at the same time, the lighting finger LED indicator 2 ₁₁₄ emergency stop operation confirmation via the direct electric signal line 2 ₁₁₆ from the digital output 316 LED display lamp 2 ₁₁₄ of the emergency stop operation for checking out is an emergency stop operation display.

For example, when there is a case where the pump 12N is making an abnormal sound during _idling , if the operation switch _21n3 for emergency stop operation is operated in the same manner, there is no need to make various selections. Moreover, since the pump stop command is directly input to the digital input 315 via the direct transmission electric signal line _21n5 without going through the communication device, the pump 12N can be stopped quickly without delay, and at the same time, the digital output 316 emergency stop operation confirmation LED indicator 2 _1N4 to the lighting command LED indicator 2 _1N4 emergency stop operation confirmation out of an emergency stop operation display via a direct electrical signal line 2 _1N6 from.

In addition, when the on-site panel 2 ₁₁ , 2 ₁₂ , to _{21 n} breaks down, an incidental device corresponding to the failed on-site panel can be operated with the single touch panel 32 of the process control panel 31, and the plant malfunctions. Can be prevented.
It also relates to systems including on-site monitoring operation panels and process control panels installed in water treatment control plants such as water treatment facilities and sewage treatment facilities. Even if a communication device abnormality occurs while enabling wiring, an emergency stop operation can be performed from the on-site monitoring operation panel, and an alternate monitoring operation function for backup of each on-site monitoring operation panel is provided on the touch panel installed in the process control panel It also has.

In Figure 3 and the above description, a single touch panel 32 of the process control board 31, all field plate ₂ 11 to perform process control unit 310 and the signal transfer, corresponding to _{to 2 1n} of the touch panel ₂ 11A _{to 2 1 nN Have the} same monitoring operation function as the touch panel 2 _11A to 2 _{1nN of} the on-site panel 2 ₁₁ , to _{21 n} , and on the screen of the single touch panel 32 of the process control panel 31, the corresponding on-site panel 2 ₁₁ , in to 2 _1n of the touch panel ₂ 11A _{to 2 1 nN} same display form as the field plate _211, there is shown a case of displaying adjacent the ₂ 11A _{to 2 1 nN} min every touch panel _{to 2 1n.}
In addition, on the screen of the single touch panel 32 of the process control board 31, all the touch panels 2 _11A to 2 _{1nN of the} on-site boards 2 ₁₁ to 2 _1n may be selectively displayed.
Although that case which can reduce the size of the screen of the single touch panel 32 of the process control board 31, the field plate _211, at the same time collectively grasp all operations status of the touch panel ₂ 11A _{to 2 1 nN} of _{to 2 1n} It is not possible.

Embodiment 2. FIG.
In the first embodiment, a case in which CC-Link communication is used as the communication between the on-board boards 2 ₁₁ , 2 ₁₂ ,... 21 _n and the process control board 31 is illustrated. As illustrated in FIG. 5, this is an example in which the communication between the panels is optical communication and has the same function as in the first embodiment.

5, the scene plate 2 _11, CC-Link Communication - optical communication conversion light conversion unit 2 _11L1 and CC-Link communication is Repeater - the light converting unit 2 _11L2 is optical communication conversion repeater is provided Yes.
Site Release The 2 _1n CC-Link Communication - optical conversion section 2 _{1 nL} is provided a optical communication conversion repeater.
The process control panel 31 is provided with an optical conversion unit 318 which is a CC-Link communication-optical communication conversion repeater.

Communication between the light conversion unit 2 _11L1 and the light conversion unit 2 _11L2 and the display control / communication control unit 2 _11dc is performed by CC-Link communication. The light conversion unit 2 _1nL and the display control / communication control unit 2 _1ndc The communication between the optical conversion unit 318 and the process control unit 310 is the CC-Link communication, and the communication between the optical conversion unit 2 _11L2 and the optical conversion unit 2 _1nL . Communication is optical communication, and communication between the optical conversion unit _211L1 and the optical conversion unit 318 is optical communication.

Further, in response to the field plate _211, an electromagnetic relay to stop the emergency stop in response to the operation switch _{2 113} emergency stop operations for operating accessory equipment corresponding to close its contacts _{2 113Rya} (conveyors 11A in FIG. 1) 2 _113Ry service appliance electromagnetic relay to light the LED indicator _{2 114} emergency stopping operation check the corresponding closing the contacts _{2 114Rya} response to stop of the (conveyor 11A in FIG. 1) corresponding to and field plate _211, 2 _114Ry is provided.

Further, in response to the field panel _{2 1n,} electromagnetic relay to stop the emergency stop in response to an emergency stop operation of the operation switch _{2 1n3} for operation service appliance corresponding closing the contacts _{2 1n3Rya} (conveyors 11A in FIG. 1) 2 _1n3Ry and an electromagnetic relay that responds to the stop of the incidental device (pump 12N in FIG. 1) corresponding to the on-site panel 2 _1n and closes the contact 2 _1n4Rya to light the corresponding LED indicator light 2 _1n4 for confirming the emergency stop operation 2 _1n4Ry is provided.
The second embodiment is an example in which the electromagnetic relay 2 _113Ry , the electromagnetic relay 2 _114Ry , the electromagnetic relay 2 _1n3Ry , and the electromagnetic relay 2 _1n4Ry are provided and have the same function in the emergency stop as in the first embodiment.

According to the second embodiment, the contact 2 _113Rya , the contact 2 _114Rya , the contact 2 _1n3Rya , and the contact 2 _1n4Rya are open at a _normal time other than in an emergency, and an optical cable is used for optical communication. It also serves as a countermeasure against induced lightning via outdoor wiring.

Embodiment 3 FIG.
In the first embodiment, the case where the communication between the on-board panels 2 ₁₁ , 2 ₁₂ , _... , 21 _n and the process control panel 31 is the CC-Link communication is illustrated, but the third embodiment is illustrated in FIG. As illustrated in FIG. 6, this is an example in which the same function as that of the first embodiment is given as communication between the boards as wireless communication.

In FIG. 5, the on-board boards 2 ₁₁ to 2 _1n and the process control board 31 are provided with wireless conversion units 7 _{211 to} 7 _1n and 7 _{310 which} are Ethernet (registered trademark) communication-wireless communication conversion radios. . Communication between the wireless conversion unit 7 ₂₁₁ and the display control / communication control unit 2 _11dc is performed via the communication path 7 _211c, and communication between the wireless conversion unit 7 _1n and the display control / communication control unit 2 _1ndc is performed via the communication path. The communication between the wireless conversion unit 7 ₃₁₀ and the process control unit ₃₁₀ of the process control panel 31 is performed via the communication path 7 _310c via Ethernet _2n1c .
Communication between the wireless conversion unit 7 ₂₁₁ to the wireless conversion unit _{71 n} and the wireless conversion unit 7 ₃₁₀ is performed by a wireless LAN.

According to the present embodiment, since the communication spanning between the on-site panels 2 ₁₁ , 2 ₁₂ , 21 _n and the process control panel 31 is wireless communication, it is not necessary to install a communication cable between the panels. More cable reduction effect can be obtained.

  In addition, in above-mentioned FIGS. 1-6, the same code | symbol shows the same or an equivalent part.

1 ₁ , 1 ₂ , 1 ₃ , 1 ₄ ,... 1 _n first, second, third, fourth,.
11A conveyor,
12N pump,
2 ₁₁ , 2 ₁₂ , ~ 2 _1n , 2 ₂₁ , 2 ₂₂ , ... 2 _2n , 2 ₃₁ , 2 ₃₂ , ... 2 _3n , 2 ₄₁ , 2 ₄₂ , ... 2 _4n , ... 2 _n1 , 2 _n2 ,... 2 _nn field board,
2 _11A touch panel,
2 _11A1 operation right switch,
2 _11A2 operation switch,
2 _{11 dc} display control / communication control unit,
2 ₁₁₃ Operation switch for emergency stop operation,
2 _113Ry electromagnetic relay,
2 _113Rya electromagnetic relay 2 contact point of _113Ry ,
2 ₁₁₄ LED indicator light for confirmation of emergency stop operation,
2 _114Ry electromagnetic relay,
2 _114Rya electromagnetic relay 2 _114Ry contact,
2 ₁₁₅ Direct transmission electric signal line (electric signal path),
2 ₁₁₆ direct transmission electric signal line (electric signal path),
2 ₁₁₇庇,
2 _11c RS422 communication path,
2 _11L1 light converter,
2 _11L2 light conversion unit,
2 _1nN touch panel,
2 _1nN1 operation right selector switch,
2 _1nN2 operation switch,
2 _1ndc display control / communication control unit,
2 Operation switch for _1n3 emergency stop operation,
2 _1n3Ry electromagnetic relay,
2 _1n3Rya electromagnetic relay 2 _1n3Ry contact,
2 _1n4 LED indicator light for emergency stop operation confirmation,
2 _1n4Ry electromagnetic relay,
2 _1n4Rya electromagnetic relay 2 _1n4Ry contact point,
2 _1n5 direct transmission electric signal line (electric signal path),
2 _1n6 direct transmission electrical signal line (electrical signal path), 2 _1nc RS422 communication path,
3 ₁ , 3 ₂ ,... 3 _n electric room,
31 Process control panel,
310 process control unit,
311 power supply unit,
312 CPU unit,
313 CC-Link communication unit,
3 ₁₃₁ CC-Link communication path,
314 RS422 communication unit,
315 digital input,
316 digital output,
317A Operation right storage memory (site-electric room),
317N Operation right storage memory (site-electric room),
318 light conversion unit,
32 touch panel,
32 _A1 operation right switch,
32 _A2 operation switch,
32 _N1 operation right switch,
32 _N2 operation switch,
3 ₁₃₂ RS422 communication path,
4 Central monitoring room,
5 Waterway,
7 _{211 to} 7 _1n , 7 ₃₁₀ wireless conversion unit,
7 _211c communication path,
7 _2n1c communication path,
7 ₃₁₀ wireless conversion unit,
7 _310c communication path.

Claims (6)

  A plurality of on-site panels that are provided corresponding to each incidental device of the treatment tank installed at the site where the treatment tank exists and perform operations of operating and stopping the auxiliary device corresponding to the touch panel, and various types installed in the treatment tank Based on the output of the water treatment sensor, a process control panel that automatically monitors and controls so that proper operation is performed on the water treatment by the auxiliary equipment, and the operation and stop of the corresponding auxiliary equipment by each touch panel of each on-site board The process control panel side touch panel in which any of the above operations can be operated and stopped is provided, and the operation and stop operations of the corresponding auxiliary devices can be performed by the touch panel of each field panel, and the process control panel side touch panel A water treatment plant monitoring and control system capable of operating and stopping any of the auxiliary devices. The water treatment plant monitoring and control system according to claim 1, wherein the signal exchange between each on-site panel and the process control panel is performed by any of CC-Link communication, optical communication, and wireless communication. A water treatment plant monitoring and control system.   The water treatment plant monitoring and control system according to claim 1 or 2, wherein an electrical signal path having a path different from a communication path of a touch panel of the field panel, provided between the field panel and the process control panel, and In addition to the touch panel of the on-site panel, an operation switch provided on the on-site panel is provided, and the associated device is operated through the electric signal path and the process control panel by the operation of the operation switch. A water treatment plant monitoring and control system.   The water treatment plant monitoring and control system according to claim 3, wherein a second electrical signal path that is provided between the field panel and the process control panel and has a path different from a communication path of a touch panel of the field panel, and In addition to the touch panel of the on-site panel, the process lamp is provided with an indicator light provided on the on-site panel, and the corresponding device is operated through the electric signal path and the process control panel by operating the operation switch. A water treatment plant monitoring and control system characterized by being displayed on the indicator lamp via a control panel and the second electric signal path.   5. The water treatment plant monitoring and control system according to claim 4, wherein each of the electrical signal paths is opened and closed by a relay contact that responds to an operation of the operation switch.   The water treatment plant monitoring and control system according to any one of claims 1 to 5, wherein the field panel is provided with a gutter that blocks sunlight from the touch panel of the field panel. Processing plant monitoring and control system.

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