CN104407633A - Water level measuring system and testing method thereof - Google Patents
Water level measuring system and testing method thereof Download PDFInfo
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- CN104407633A CN104407633A CN201410677796.4A CN201410677796A CN104407633A CN 104407633 A CN104407633 A CN 104407633A CN 201410677796 A CN201410677796 A CN 201410677796A CN 104407633 A CN104407633 A CN 104407633A
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- water level
- level measuring
- dehumidifier
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- Level Indicators Using A Float (AREA)
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Abstract
The invention relates to a water level measuring system and a testing method thereof. The water level measuring system comprises a PLC (programmable logic controller), first to second optical fiber transceivers, first to Nth water level detectors, a man-machine interaction module and a wireless communication module, wherein the man-machine interaction module and the wireless communication module are connected with the PLC. The PLC is connected with the second optical fiber transceiver through an RS485, the second optical fiber transceiver is connected with the first optical fiber transceiver through an optical fiber, the first optical fiber transceiver is connected with the first to Nth water level detectors, and the first to Nth water level detectors are arranged at water-level measuring wells in the upstream and downstream dam. The water level measuring system is simple in circuit structure, accuracy in data transmission by adopting the optical fiber and the RS485 is improved, and the water level measuring system has a water level alarm function and an energy source self-supply function.
Description
Technical field
The present invention relates to a kind of water level measuring and controlling system and method for testing thereof.
Background technology
Water level measuring and controlling system is the important measuring and controlling equipment of hydroelectric power plant, the water levels of upstream and downstream of hydroelectric power plant is the significant data of Safety of Flood Control, trash rack pressure reduction affects unit output, waterwork safety, and head value affects speed regulator combination curve, and then affects unit efficiency even safe and stable operation.
There is following problem in the water level measuring and controlling system of current hydroelectric power plant: failure rate is high in operation maintenance; Adopt cable long distance delivery gray code signal, lightning protection, poor anti jamming capability, instrument, sensor are fragile; 4 15 binary-coded decimal sensors need 60 polycore cables difficult in maintenance; The instrument extendability of customization is poor, input, output calibration, parameter tuning complicated operation; Price is high, standby redundancy buying difficulty.
Summary of the invention
The object of the present invention is to provide a kind of circuit structure simple, be easy to the water level measuring and controlling system realized.
For achieving the above object, technical scheme of the present invention is: a kind of water level measuring and controlling system, comprise PLC, the first to the second fiber optical transceiver, first to N condensate tank of dehumidifier and the human-computer interaction module be connected with PLC and wireless communication module, described PLC is connected to the second fiber optical transceiver through RS485 interface, described second fiber optical transceiver is through Fiber connection to the first fiber optical transceiver, and described first fiber optical transceiver is connected to N condensate tank of dehumidifier with described first; Described first is arranged at intervals at the level measuring vertical shaft place of dam upstream and downstream to N condensate tank of dehumidifier; Described first comprises to N condensate tank of dehumidifier the well logging substrate be arranged on level measuring vertical shaft, be arranged at the circular base slab on this well logging substrate and the support that be fixedly connected with vertical with this circular base slab, described circular base slab is provided with some ultrasonic sensors, described support is provided with runner and the photoelectric encoder for detecting the runner rotation number of turns, described runner is arranged with wire rope, the hole of these wire rope two ends on well logging substrate stretches into level measuring vertical shaft, and these wire rope two ends are connected to float and weight; Described some ultrasonic sensors and photoelectric encoder are all connected to a MCU.
In embodiments of the present invention, described MCU is also connected with GPS locating module, and described MCU and GPS locating module is all arranged on described photoelectric encoder.
In embodiments of the present invention, described wireless communication module is connected to machine unit speed regulating device, telemechanical RTU device through wireless network and is arranged at the audible and visual alarm module of dam pulpit.
In embodiments of the present invention, described well logging substrate is also provided with some solar panels, and this solar panel is connected to described MCU.
In embodiments of the present invention, described human-computer interaction module adopts LCD touch screen.
Present invention also offers a kind of method of testing adopting water level measuring and controlling system described above, comprise the steps,
S1: by human-computer interaction module setting measurement parameter, and be transferred to the MCU of condensate tank of dehumidifier, initialization system;
S2: detect described condensate tank of dehumidifier by ultrasonic sensor and whether place smooth, until the waterlevel data error that each ultrasonic sensor detects is less than setting threshold value, starts level measuring;
S3: by the longitude and latitude of GPS locating module determination level measuring vertical shaft, and residing for this longitude and latitude determination level measuring vertical shaft sea level elevation;
S4: measure the height of water level in level measuring vertical shaft by photoelectric encoder, and compare with the height of water level that ultrasonic sensor is measured, if error is less than designated water level error threshold, then by fiber optical transceiver, altitude data and height of water level data are transferred to PLC;
The height of water level data that S5:PLC controller is measured according to each condensate tank of dehumidifier and altitude data, compare with early warning value, if exceed early warning value, then notify managerial personnel, and send alerting signal, otherwise, continue to detect.
Compared to prior art, the present invention has following beneficial effect:
1, the present invention can gather upstream and downstream and measure the water level information of vertical shaft, and carries out water-level alarm, and adopts optical fiber and RS485 to improve the accuracy of data transmission, and has water-level alarm function and the energy from functions of physical supply, has high reliability and accuracy;
2, the present invention adopts multiple ultrasonic sensor and photoelectric encoder to compare and measure, and improves water level measurement accuracy.
Accompanying drawing explanation
Fig. 1 is a kind of water level measuring and controlling system chart of the present invention.
Fig. 2 is condensate tank of dehumidifier circuit block diagram of the present invention.
Fig. 3 is condensate tank of dehumidifier structural representation Fig. 1 of the present invention.
Fig. 4 is condensate tank of dehumidifier structural representation Fig. 2 of the present invention.
In figure, 1 for well logging substrate 2 be level measuring vertical shaft 3 for circular base slab 4 for support 5 for photoelectric encoder 6 for runner 7 for wire rope 8 for float 9 for weight 10 for MCU 11 for ultrasonic sensor 12 is solar panel.
Embodiment
Below in conjunction with accompanying drawing, technical scheme of the present invention is specifically described.
As shown in Figures 1 to 4, a kind of water level measuring and controlling system of the present invention, comprise PLC, the first to the second fiber optical transceiver, first to N condensate tank of dehumidifier and the human-computer interaction module be connected with PLC (adopting general PLC) and wireless communication module, described PLC is connected to the second fiber optical transceiver through RS485 interface, described second fiber optical transceiver is through Fiber connection to the first fiber optical transceiver, and described first fiber optical transceiver is connected to N condensate tank of dehumidifier with described first, described first is arranged at intervals at the level measuring vertical shaft place of dam upstream and downstream to N condensate tank of dehumidifier, described first comprises to N condensate tank of dehumidifier the well logging substrate 1 be arranged on level measuring vertical shaft 2, be arranged at the circular base slab 3 on this well logging substrate 1 and the support 4 that be fixedly connected with vertical with this circular base slab 3, described circular base slab 3 is provided with some ultrasonic sensors 11, described support 5 is provided with runner 6 and rotates the photoelectric encoder (adopt ZKX-6A-50BM7.5T-G05E) 5 of the number of turns for detecting runner 6, described runner 6 is arranged with wire rope 7, the hole of these wire rope 7 two ends on well logging substrate 1 stretches into level measuring vertical shaft 2, and these wire rope 7 two ends are connected to float 8 and weight 9, described some ultrasonic sensors 11 and photoelectric encoder 5 are all connected to a MCU(and adopt 51 series monolithics) 10.
Whether described ultrasonic sensor is used for sensed water level measurement mechanism and places smooth, if level measurement device has been placed smooth through ultrasonic sensor detection, then ultrasonic sensor is also convertible into the water level measuring level measuring vertical shaft, and compares with the water level that photoelectric encoder is measured.
In order to sensed water level measures the longitude and latitude of vertical shaft, to determine its sea level elevation, described MCU is also connected with GPS locating module, and described MCU and GPS locating module is all arranged on described photoelectric encoder.
Described wireless communication module is connected to machine unit speed regulating device, telemechanical RTU device through wireless network and is arranged at the audible and visual alarm module of dam pulpit.
Described well logging substrate is also provided with some solar panels 12, and this solar panel 12 is connected to described MCU.
Described human-computer interaction module adopts LCD touch screen.
Present invention also offers a kind of method of testing adopting water level measuring and controlling system described above, comprise the steps,
S1: by human-computer interaction module setting measurement parameter, and be transferred to the MCU of condensate tank of dehumidifier, initialization system;
S2: detect described condensate tank of dehumidifier by ultrasonic sensor and whether place smooth, until the waterlevel data error that each ultrasonic sensor detects is less than setting threshold value, starts level measuring;
S3: by the longitude and latitude of GPS locating module determination level measuring vertical shaft, and residing for this longitude and latitude determination level measuring vertical shaft sea level elevation;
S4: measure the height of water level in level measuring vertical shaft by photoelectric encoder, and compare with the height of water level that ultrasonic sensor is measured, if error is less than designated water level error threshold, then by fiber optical transceiver, altitude data and height of water level data are transferred to PLC;
The height of water level data that S5:PLC controller is measured according to each condensate tank of dehumidifier and altitude data, compare with early warning value, if exceed early warning value, then notify managerial personnel, and send alerting signal, otherwise, continue to detect.
Be more than preferred embodiment of the present invention, all changes done according to technical solution of the present invention, when the function produced does not exceed the scope of technical solution of the present invention, all belong to protection scope of the present invention.
Claims (6)
1. a water level measuring and controlling system, it is characterized in that: comprise PLC, the first to the second fiber optical transceiver, first to N condensate tank of dehumidifier and the human-computer interaction module be connected with PLC and wireless communication module, described PLC is connected to the second fiber optical transceiver through RS485 interface, described second fiber optical transceiver is through Fiber connection to the first fiber optical transceiver, and described first fiber optical transceiver is connected to N condensate tank of dehumidifier with described first; Described first is arranged at intervals at the level measuring vertical shaft place of dam upstream and downstream to N condensate tank of dehumidifier; Described first comprises to N condensate tank of dehumidifier the well logging substrate be arranged on level measuring vertical shaft, be arranged at the circular base slab on this well logging substrate and the support that be fixedly connected with vertical with this circular base slab, described circular base slab is provided with some ultrasonic sensors, described support is provided with runner and the photoelectric encoder for detecting the runner rotation number of turns, described runner is arranged with wire rope, the hole of these wire rope two ends on well logging substrate stretches into level measuring vertical shaft, and these wire rope two ends are connected to float and weight; Described some ultrasonic sensors and photoelectric encoder are all connected to a MCU.
2. a kind of water level measuring and controlling system according to claim 1, is characterized in that: described MCU is also connected with GPS locating module, and described MCU and GPS locating module is all arranged on described photoelectric encoder.
3. a kind of water level measuring and controlling system according to claim 1, is characterized in that: described wireless communication module is connected to machine unit speed regulating device, telemechanical RTU device through wireless network and is arranged at the audible and visual alarm module of dam pulpit.
4. a kind of water level measuring and controlling system according to claim 1, is characterized in that: described well logging substrate is also provided with some solar panels, and this solar panel is connected to described MCU.
5. a kind of water level measuring and controlling system according to claim 1, is characterized in that: described human-computer interaction module adopts LCD touch screen.
6. adopt a method of testing for the water level measuring and controlling system described in claim 2 any one, it is characterized in that: comprise the steps,
S1: by human-computer interaction module setting measurement parameter, and be transferred to the MCU of condensate tank of dehumidifier, initialization system;
S2: detect described condensate tank of dehumidifier by ultrasonic sensor and whether place smooth, until the waterlevel data error that each ultrasonic sensor detects is less than setting threshold value, starts level measuring;
S3: by the longitude and latitude of GPS locating module determination level measuring vertical shaft, and residing for this longitude and latitude determination level measuring vertical shaft sea level elevation;
S4: measure the height of water level in level measuring vertical shaft by photoelectric encoder, and compare with the height of water level that ultrasonic sensor is measured, if error is less than designated water level error threshold, then by fiber optical transceiver, altitude data and height of water level data are transferred to PLC;
The height of water level data that S5:PLC controller is measured according to each condensate tank of dehumidifier and altitude data, compare with early warning value, if exceed early warning value, then notify managerial personnel, and send alerting signal, otherwise, continue to detect.
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| CN201410677796.4A CN104407633B (en) | 2014-11-24 | 2014-11-24 | Water level measuring system and testing method thereof |
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| CN108549422A (en) * | 2018-04-24 | 2018-09-18 | 陈欣欣 | Water Level Regulating System and its adjusting method |
| CN111910588A (en) * | 2020-08-11 | 2020-11-10 | 安徽省万豪水坝节能技术有限公司 | Intelligent water conservancy hydraulic dam detection control system and method |
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| CN104407633B (en) | 2017-01-11 |
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