CN205450722U - Water works remote monitering system based on wireless wide area network - Google Patents
Water works remote monitering system based on wireless wide area network Download PDFInfo
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- CN205450722U CN205450722U CN201620189169.0U CN201620189169U CN205450722U CN 205450722 U CN205450722 U CN 205450722U CN 201620189169 U CN201620189169 U CN 201620189169U CN 205450722 U CN205450722 U CN 205450722U
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 52
- 238000000034 method Methods 0.000 claims description 53
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- 238000012544 monitoring process Methods 0.000 claims description 25
- 238000001914 filtration Methods 0.000 claims description 14
- 238000006243 chemical reaction Methods 0.000 claims description 13
- 238000004062 sedimentation Methods 0.000 claims description 13
- 238000005516 engineering process Methods 0.000 abstract description 3
- 230000002159 abnormal effect Effects 0.000 description 7
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- 235000020679 tap water Nutrition 0.000 description 7
- 239000007788 liquid Substances 0.000 description 5
- OSVXSBDYLRYLIG-UHFFFAOYSA-N dioxidochlorine(.) Chemical compound O=Cl=O OSVXSBDYLRYLIG-UHFFFAOYSA-N 0.000 description 4
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- 125000001309 chloro group Chemical group Cl* 0.000 description 3
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- 235000019398 chlorine dioxide Nutrition 0.000 description 2
- 230000001112 coagulating effect Effects 0.000 description 2
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- 239000008400 supply water Substances 0.000 description 2
- 101150012579 ADSL gene Proteins 0.000 description 1
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- 108700040193 Adenylosuccinate lyases Proteins 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- 239000006004 Quartz sand Substances 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
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- 239000000460 chlorine Substances 0.000 description 1
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- 239000000693 micelle Substances 0.000 description 1
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- 239000002574 poison Substances 0.000 description 1
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Abstract
The utility model provides a water works remote monitering system based on wireless wide area network, includes: PLC central controller (1), central virtual local area network module of connecting in order (2) and central wireless transceiver module (3) that are used for being connected to the wireless wide area network, lay a plurality of on -site supervision unit (100) at on -the -spot each technology point respectively, every on -site supervision unit (100) are including data acquisition module (101) connected in order, on -the -spot virtual local area network module (102), an on -the -spot wireless transceiver module (103) for being connected to the wireless wide area network, every on -site supervision unit (100) still include on -site supervision module (104), analytic module (105) of control serial ports agreement and the analytic module (106) of industrial ethernet agreement, on -site supervision module (104) and the analytic module (105) of control serial ports agreement, the analytic module (106) of industrial ethernet agreement, on -the -spot virtual local area network module (102) and on -the -spot wireless transceiver module (103) are connected in order.
Description
Technical field
This utility model relates to remote monitor supervision area, in particular it relates to a kind of waterworks based on wireless wide area network long distance control system.
Background technology
The most typical city tap-water factory generally includes reaction tank, sedimentation tank, filtering ponds and clear water reserviors, technological process is as follows: (1) coagulating processes: by water pump by surface water (river, river, lake etc.) suction reaction tank, utilize flocculant to deliver machine and add flocculant in appropriate amount according to the height of liquid level in reaction tank, by the de-coalescence steady, mutual of micelle and small float being difficult to precipitation in water, adsorption bridging, thus form bigger flock, it is beneficial to be separated from the water sedimentation；(2) precipitation process: the water after coagulating processes flows into sedimentation tank by deferent and carries out precipitation process, and the flock formed in the coagulation stage relies on action of gravity to be separated from the water out, the granule in water is sunken at the bottom of pond and periodically discharges outside pond；(3) filtration treatment: have the particulate filter layer in space by particle in adhesion trap water with quartz sand etc. by gravity valveless filtering ponds, remove tiny suspended impurity, Organic substance, antibacterial, virus etc. in water further, the water injected clear water pond after filtering；(4) disinfect after filter: generated chlorine dioxide by chlorine dioxide generator according to the liquid level in clear water reserviors and residual chlorine amount and the water in clear water reserviors is carried out disinfection, finally according to current ductwork pressure, the water after sterilization in clear water reserviors is sent into water supply network with authorized pressure (3Kpa) by the water pump of Water-supply station.
After tap water enters water supply network, at water supply branch road, it is provided with effusion meter, for statistics towards some region of output.Owing to loss and branch circuit load change, booster station would generally be provided with in the water supply stage casing of waterworks, for the tap water in pipe network is carried out secondary pressure regulation, with constant pressure of supply water, thus while ensureing pressure of supply water, avoid that hydraulic pressure is too high causes booster.
In the existing waterworks automatically controlled, reaction tank, sedimentation tank, filtering ponds and clear water reserviors are provided with on-the-spot PLC, for receiving from reaction tank, sedimentation tank, the data that the data acquisition module of filtering ponds and clear water reserviors each process point on-the-spot is collected, to understand real-time working condition (the such as liquid level of each process point, turbidity, chlorine residue, Ph value, pump motor current/voltage, ductwork pressure etc.), each on-the-spot PLC carries out corresponding control process (such as water pump according to the data received to the process point equipment each connected, valve switch and aperture regulation, ductwork pressure regulates, dosage regulation etc. delivered by flocculant).
Due to the existing waterworks automatically controlled be all utilize EPA, the slave station scene PLC that is connected to each process point by bus cable by the main website PLC central controller of plant area's central control room realizes the decentralised control to each process point, this EPA remote networking realized by wired mode is by the distance limit between main website and slave station so that the layout of whole waterworks suffers restraints.
Additionally, this decentralised control for each process point requires that each process point is both needed to be provided with on-the-spot PLC, the on-the-spot PLC of the most a certain process point breaks down, the properly functioning control system of other process point can not the most normally work because of technique interaction relation the most most probably, in order to avoid such problem, the existing waterworks automatically controlled is generally directed to each on-the-spot PLC and is additionally provided with an on-the-spot standby redundancy PLC, once certain on-the-spot PLC breaks down, the on-the-spot backup PLC automatically switching to its correspondence is worked on, to ensure the failure-free operation of full factory, the cost of the most whole electric autocontrol system is relatively costly.
nullAnd，In order to avoid waterworks reaction tank、Sedimentation tank、There are abnormal conditions (generation of event (the most artificially poison etc.) in filtering ponds and clear water reserviors scene，The existing waterworks automatically controlled the most also is equiped with video monitoring system，Utilize the video monitoring equipment Real-time Collection being laid in each process point on-the-spot from on-the-spot picture signal，Alarm signal is sent when there being intrusion behavior to occur，Networking is utilized to connect the PC that real-time image signal and alarm signal are passed back to plant area's central control room，Plant area staff needs real-time monitoring field operating mode in central control room，Once find the abnormal conditions such as intrusion behavior，Need to go to scene to check artificially、Detection and process，Use manual monitoring that careless omission easily occurs，And cannot realize detecting and process (such as cannot close penstock when event of poisoning occurs in time and stop tap water conveying) in real time，Tend not to control in time the generation of Deviant Behavior.
Utility model content
The purpose of this utility model is for the problem that waterworks layout suffers restraints, robot control system(RCS) involves great expense, monitoring efficiency is the highest automatically controlled at present, it is provided that a kind of can free surface jet, not relatively low by distance limit, cost and monitoring efficiency high, ensure that waterworks based on the wireless wide area network long distance control system of the safety and stability run waterworks.
According to the technical solution of the utility model, provide a kind of waterworks based on wireless wide area network long distance control system, this long distance control system includes: being laid in the PLC central controller of plant area's central control room, central authorities' VLAN module and for being connected to the wireless centrex transceiver module of described wireless wide area network, described PLC central controller is sequentially connected with described central VLAN module and described wireless centrex transceiver module；nullIt is laid in waterworks reaction tank respectively、Sedimentation tank、Filtering ponds and multiple field terminal units of clear water reserviors each process point on-the-spot，Each described field terminal unit includes the data acquisition module for gathering the sensor signal from each self-corresponding process point、On-the-spot VLAN module、For being connected to the on-site wireless transceiver module of described wireless wide area network、For Real-time Collection field image signal、And the on-site supervision module of alarm signal is sent when intrusion event occurs、Monitoring serial port protocol resolution module、And industrial ethernet protocol parsing module，Described data acquisition module is sequentially connected with described on-the-spot VLAN module and described on-site wireless transceiver module，Described on-site supervision module and described monitoring serial port protocol resolution module、Described industrial ethernet protocol parsing module、Described on-the-spot VLAN module and described on-site wireless transceiver module are sequentially connected with.
Specifically, any one during described wireless wide area network is 3G network and 4G network.
Specifically, described on-site supervision module includes one or more video monitoring equipment.
Further, described long distance control system also includes the PC being laid in plant area's central control room, and described PLC central controller is connected with described PC.
Further, described long distance control system also includes mobile terminal, and described wireless centrex transceiver module is connected with described mobile terminal by wireless wide area network.
Further, described long distance control system also includes the redundant PLC central controller being laid in plant area's central control room, this redundant PLC central controller is connected with described PLC central controller, and is sequentially connected with described central authorities' VLAN module and described wireless centrex transceiver module.
nullAccording to the technical solution of the utility model，Owing to being laid in waterworks reaction tank、Sedimentation tank、Multiple field terminal units of filtering ponds and clear water reserviors each process point on-the-spot are all to be connected with the PLC central controller being laid in plant area's central control room by wireless wide area network，Utilize wireless connections to replace fieldbus to connect，Avoid the limitation of wired connection，And remote transmission distance is wider，And utilize PLC central controller to realize the centerized fusion of each process point equipment on-the-spot to plant area，To replace the distributing control of the on-the-spot PLC of existing each process point at the scene laying，The while of control more in time, electric autocontrol system cost is minimized，In addition，The monitoring system of waterworks uses aforesaid PLC central controller centralized Control scheme equally，When there being intrusion event to occur，PLC central controller can read and be laid in the alarm signal that the on-site supervision module of plant area's each process point on-the-spot sends，And while reading alarm signal, perform the monitoring (such as judging whether water quality to occur extremely) of site technique point by water quality value and the normal reference value prestored being compared，Once find that the abnormal stopping water supply control instruction that i.e. sends of process point (such as closes penstock、Stop sending water to enter the operations such as water supply network)，Tap water the most up to standard is avoided to enter water supply network，Ensure that water supply security.
Accompanying drawing explanation
Accompanying drawing is used to offer and is further appreciated by of the present utility model, and constitutes a part for description, is used for explaining this utility model, but is not intended that restriction of the present utility model together with detailed description below.In the accompanying drawings:
Fig. 1 is the structural representation of waterworks based on the wireless wide area network long distance control system that this utility model provides；And
Fig. 2 is the structural representation of field terminal unit in waterworks based on the wireless wide area network long distance control system that this utility model provides.
Detailed description of the invention
Below in conjunction with accompanying drawing, detailed description of the invention of the present utility model is described in detail.It should be appreciated that detailed description of the invention described herein is merely to illustrate and explains this utility model, it is not limited to this utility model.
According to the technical solution of the utility model, as shown in Figure 1, provide a kind of waterworks based on wireless wide area network 10 long distance control system, this long distance control system includes: being laid in the PLC central controller 1 of plant area's central control room, central authorities' VLAN module 2 and for being connected to the wireless centrex transceiver module 3 of described wireless wide area network 10, described PLC central controller 1 is sequentially connected with described central VLAN module 2 and described wireless centrex transceiver module 3；nullIt is laid in waterworks reaction tank respectively、Sedimentation tank、Filtering ponds and multiple field terminal units 100 of clear water reserviors each process point on-the-spot，Each described field terminal unit 100 includes the data acquisition module 101 for gathering the sensor signal from each self-corresponding process point、On-the-spot VLAN module 102、For being connected to the on-site wireless transceiver module 103 of described wireless wide area network 10、For Real-time Collection field image signal、And the on-site supervision module 104 of alarm signal is sent when intrusion event occurs、Monitoring serial port protocol resolution module 105、And industrial ethernet protocol parsing module 106，Described data acquisition module 101 is sequentially connected with described on-the-spot VLAN module 102 and described on-site wireless transceiver module 103，Described on-site supervision module 104 and described monitoring serial port protocol resolution module 105、Described industrial ethernet protocol parsing module 106、Described on-the-spot VLAN module 102 and described on-site wireless transceiver module 103 are sequentially connected with.
Wherein, PLC central controller 1 is programmable logic controller (PLC), its storage inside has the instruction performing the operations such as logical operations, sequential operation, timing, counting and arithmetical operation, by digital or analog input and output, control various types of machinery or production process, be control signal processing means conventional in a kind of Industry Control.
nullAccording to the technical solution of the utility model，Arranged by program in advance，It is laid in the PLC central controller 1 of plant area's central control room storage to have waterworks reaction tank、Sedimentation tank、Filtering ponds and the control instruction of clear water reserviors each process point equipment on-the-spot，Waterworks reaction tank、Sedimentation tank、Filtering ponds and clear water reserviors each process point on-the-spot are laid with multiple field terminal unit 100，As shown in Figure 2，Each field terminal unit 100 includes data acquisition module 101，For gathering sensor signal (the such as liquid level from each self-corresponding process point、Turbidity、Chlorine residue、Ph value、Pump motor current/voltage、Ductwork pressure etc.)，PLC central controller 1 is according to data (the such as liquid level from each process point on-the-spot、Turbidity、Chlorine residue、Ph value、Pump motor current/voltage、Ductwork pressure etc.) each site technique point device is controlled (such as water pump accordingly、Valve switch and aperture regulation、Ductwork pressure regulates、Dosage regulation etc. delivered by flocculant).
According to the technical solution of the utility model, PLC central controller 1 realizes being connected by wireless wide area network 10 with field terminal unit 100, therefore, each field terminal unit 100 also includes on-the-spot VLAN module 102, on-site wireless transceiver module 103, data acquisition module 101 is connected with on-the-spot VLAN module 102, and access wireless wide area network 10 by on-site wireless transceiver module 103, similarly, PLC central controller 1 is connected with central VLAN module 2, and access wireless wide area network 10 by wireless centrex transceiver module 3, it is achieved thereby that with the connection of field terminal unit 100 and signal transmission.
According to the technical solution of the utility model, preferably, described central authorities VLAN module 2 can use AES256 AES, build the central control terminal VLAN passage to on-the-spot end, on-the-spot VLAN module 102 can use AES256 AES, builds the on-the-spot end VLAN passage to central control terminal；Described wireless centrex transceiver module 3 can use cable broadband to access, such as ADSL, and described on-site wireless transceiver module 103 can use LTEFDD mobile data network.
According to the technical solution of the utility model, owing to being laid in waterworks reaction tank, sedimentation tank, multiple field terminal units 100 of filtering ponds and clear water reserviors each process point on-the-spot are all to realize being connected with the PLC central controller 1 being laid in plant area's central control room by wireless wide area network 10, utilize wireless connections to replace fieldbus to connect, avoid the limitation of wired connection, and remote transmission distance is wider, and utilize PLC central controller 1 to realize the centerized fusion of each process point equipment on-the-spot to plant area, the while of control more in time, electric autocontrol system cost is minimized.
According to the technical solution of the utility model, described wireless wide area network 10 is any one in 3G network and 4G network, and this utility model is not limited thereof.
According to the technical solution of the utility model, described field terminal unit 100 also includes on-site supervision module 104, alarm signal is sent for Real-time Collection field image signal and when intrusion event occurs, described on-site supervision module 104 includes one or more video monitoring equipment, it is laid in each process point on-the-spot, for the operating mode that each process point is on-the-spot being monitored in real time by the way of video capture, and send alarm signal when there is abnormal conditions (being such as found to have intrusion event by image comparison).Operation principle and the flow process of described video monitoring equipment are known to those skilled in the art.nullOn-site supervision module 104 and monitoring serial port protocol resolution module 105、Industrial ethernet protocol parsing module 106 connects，Access industrial gateway by the way of EPA，Industrial gateway reads image information and the warning message of video monitoring equipment by the communication protocol resolving video monitoring equipment，And access wireless wide area network 10 by on-the-spot VLAN module 102 and on-site wireless transceiver module 103，Realize the connection with PLC central controller 1，Thus，PLC central controller 1 is according to the program pre-set，Monitoring instruction is sent while reading the alarm signal that the on-site supervision module 104 being laid in plant area's each process point on-the-spot sends，Perform the monitoring (such as judging whether water quality to occur extremely) of site technique point by water quality value and the normal reference value prestored being compared，Once find that the abnormal stopping water supply control instruction that i.e. sends of process point (such as closes penstock、Stop sending water to enter the operations such as water supply network)，Tap water the most up to standard is avoided to enter water supply network，Ensure water supply security.
According to the technical solution of the utility model, preferably, described monitoring serial port protocol resolution module 105 can use standard serial port communication protocol, described industrial ethernet protocol parsing module 106 can use MODBusTCP EPA communication protocol, and its operation principle is known to those skilled in the art.
According to the technical solution of the utility model, as shown in Figure 1, described long distance control system also includes the PC 4 being laid in plant area's central control room, described PLC central controller 1 is connected with described PC 4, thus, plant area staff can obtain, by PC 4, the data that each process point of waterworks is on-the-spot, it is possible to carries out Artificial Control.
nullPreferably，The long distance control system that this utility model provides also includes mobile terminal 6，Described wireless centrex transceiver module 3 is connected with described mobile terminal 6 by wireless wide area network 10，Thus，Arrange according to program in advance，Warning message and the control instruction information that sends accordingly can be sent to mobile terminal 6 while reading the alarm signal that the on-site supervision module 104 being laid in plant area's each process point on-the-spot sends by PLC central controller 1 by wireless wide area network 10，When plant area staff is not at central control room，Can be by mobile terminal 6 real-time reception to from the warning message of PLC central controller 1 and control instruction information，Understand abnormal conditions time of origin in real time、Place and PLC central controller 1 control operation accordingly，To go to scene to carry out event handling more in time.
nullPreferably，As shown in Figure 1，The long distance control system that this utility model provides also includes the redundant PLC central controller 5 being laid in plant area's central control room，This redundant PLC central controller 5 is connected with described PLC central controller 1，And be sequentially connected with described central authorities' VLAN module 2 and described wireless centrex transceiver module 3，Described redundant PLC central controller 5 uses exact same way to configure with PLC central controller 1 and is connected，Arrange according to program in advance，In the case of PLC central controller 1 normally works，Described redundant PLC central controller 5 is in a dormant state，When PLC central controller 1 breaks down and cannot normally work，Described redundant PLC central controller 5 wakes up up according to the fault-signal from PLC central controller 1 and automatically switches and carries out the control work of each process point field apparatus of waterworks，Thus，Full factory is enhanced non-failure operation time.
nullUse waterworks based on wireless wide area network 10 long distance control system that this utility model provides，Multiple field terminal units 100 of waterworks each process point on-the-spot are all to be connected with the PLC central controller 1 being laid in plant area's central control room by wireless wide area network 10，Utilize wireless connections to replace fieldbus to connect，Avoid the limitation of wired connection，And remote transmission distance is wider，And utilize PLC central controller 1 to realize the centerized fusion of each process point equipment on-the-spot to plant area，To replace the distributing control of the on-the-spot PLC of existing each process point at the scene laying，The while of control more in time, electric autocontrol system cost is minimized，When there being intrusion event to occur，PLC central controller 1 can read and be laid in the alarm signal that the on-site supervision module 104 of plant area's each process point on-the-spot sends，And while reading alarm signal, perform the monitoring of site technique point，Once find that process point is abnormal and i.e. send stopping water supply control instruction，Tap water the most up to standard is avoided to enter water supply network，Ensure that water supply security.
Preferred implementation of the present utility model is described in detail above in association with accompanying drawing; but; this utility model is not limited to the detail in above-mentioned embodiment; in technology concept of the present utility model; the technical solution of the utility model can be carried out multiple simple variant, these simple variant belong to protection domain of the present utility model.
It is further to note that, each concrete technical characteristic described in above-mentioned detailed description of the invention, in the case of reconcilable, can be combined by any suitable means, in order to avoid unnecessary repetition, various possible compound modes are illustrated by this utility model the most separately.Additionally, can also carry out combination in any between various different embodiment of the present utility model, as long as it is without prejudice to thought of the present utility model, it should be considered as content disclosed in the utility model equally.
Claims (6)
1. a waterworks long distance control system based on wireless wide area network (10), it is characterized in that, this long distance control system includes: being laid in the PLC central controller (1) of plant area's central control room, central authorities' VLAN module (2) and be used for being connected to the wireless centrex transceiver module (3) of described wireless wide area network (10), described PLC central controller (1) is sequentially connected with described central authorities' VLAN module (2) and described wireless centrex transceiver module (3)；
nullIt is laid in waterworks reaction tank respectively、Sedimentation tank、Filtering ponds and multiple field terminal units (100) of clear water reserviors each process point on-the-spot，Each described field terminal unit (100) includes the data acquisition module (101) for gathering the sensor signal from each self-corresponding process point、On-the-spot VLAN module (102)、For being connected to the on-site wireless transceiver module (103) of described wireless wide area network (10)、For Real-time Collection field image signal、And the on-site supervision module (104) of alarm signal is sent when intrusion event occurs、Monitoring serial port protocol resolution module (105)、And industrial ethernet protocol parsing module (106)，Described data acquisition module (101) is sequentially connected with described on-the-spot VLAN module (102) and described on-site wireless transceiver module (103)，Described on-site supervision module (104) and described monitoring serial port protocol resolution module (105)、Described industrial ethernet protocol parsing module (106)、Described on-the-spot VLAN module (102) and described on-site wireless transceiver module (103) are sequentially connected with.
Long distance control system the most according to claim 1, it is characterised in that described wireless wide area network (10) is any one in 3G network and 4G network.
Long distance control system the most according to claim 1, it is characterized in that, described long distance control system also includes the PC (4) being laid in plant area's central control room, and described PLC central controller (1) is connected with described PC (4).
Long distance control system the most according to claim 1, it is characterised in that described on-site supervision module (104) includes one or more video monitoring equipment.
Long distance control system the most according to claim 1, it is characterized in that, described long distance control system also includes the redundant PLC central controller (5) being laid in plant area's central control room, this redundant PLC central controller (5) is connected with described PLC central controller (1), and is sequentially connected with described central authorities' VLAN module (2) and described wireless centrex transceiver module (3).
Long distance control system the most according to claim 1, it is characterized in that, described long distance control system also includes mobile terminal (6), and described wireless centrex transceiver module (3) is connected with described mobile terminal (6) by wireless wide area network (10).
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| CN201620189169.0U CN205450722U (en) | 2016-03-11 | 2016-03-11 | Water works remote monitering system based on wireless wide area network |
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| CN201620189169.0U CN205450722U (en) | 2016-03-11 | 2016-03-11 | Water works remote monitering system based on wireless wide area network |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106843183A (en) * | 2017-03-29 | 2017-06-13 | 苏州中材建设有限公司 | The long distance control system and control method of the dry type grout line debugging based on VPN technologies |
| CN107991960A (en) * | 2017-12-12 | 2018-05-04 | 温州市易天信息科技有限公司 | A kind of electromechanical equipment intelligentized control method platform |
| CN109901507A (en) * | 2019-04-01 | 2019-06-18 | 江苏四联自动化科技有限公司 | A kind of water factory's remote monitoring system based on PLC |
| CN116719222A (en) * | 2023-08-07 | 2023-09-08 | 哈尔滨凯纳科技股份有限公司 | Remote terminal redundant control system of secondary water supply pump station |
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2016
- 2016-03-11 CN CN201620189169.0U patent/CN205450722U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106843183A (en) * | 2017-03-29 | 2017-06-13 | 苏州中材建设有限公司 | The long distance control system and control method of the dry type grout line debugging based on VPN technologies |
| CN106843183B (en) * | 2017-03-29 | 2018-10-16 | 苏州中材建设有限公司 | The remote monitoring system and control method of dry type grout line debugging based on VPN technologies |
| CN107991960A (en) * | 2017-12-12 | 2018-05-04 | 温州市易天信息科技有限公司 | A kind of electromechanical equipment intelligentized control method platform |
| CN109901507A (en) * | 2019-04-01 | 2019-06-18 | 江苏四联自动化科技有限公司 | A kind of water factory's remote monitoring system based on PLC |
| CN116719222A (en) * | 2023-08-07 | 2023-09-08 | 哈尔滨凯纳科技股份有限公司 | Remote terminal redundant control system of secondary water supply pump station |
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Granted publication date: 20160810 |