CN104567831B - Easily precipitated water quality open channel flow measuring instrument and measurement method thereof - Google Patents
Easily precipitated water quality open channel flow measuring instrument and measurement method thereof Download PDFInfo
- Publication number
- CN104567831B CN104567831B CN201510057998.3A CN201510057998A CN104567831B CN 104567831 B CN104567831 B CN 104567831B CN 201510057998 A CN201510057998 A CN 201510057998A CN 104567831 B CN104567831 B CN 104567831B
- Authority
- CN
- China
- Prior art keywords
- flow
- shell
- mainboard
- data processing
- force
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C13/00—Surveying specially adapted to open water, e.g. sea, lake, river or canal
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C13/00—Surveying specially adapted to open water, e.g. sea, lake, river or canal
- G01C13/008—Surveying specially adapted to open water, e.g. sea, lake, river or canal measuring depth of open water
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A90/00—Technologies having an indirect contribution to adaptation to climate change
- Y02A90/30—Assessment of water resources
Abstract
The invention belongs to the technical field of sludge flow measurement and in particular relates to an easily precipitated water quality open channel flow measuring instrument and a measurement method thereof. The open channel flow can be accurately measured on line in real line and is not influenced by the sludge precipitation thickness, and the problem that the open channel flow is inaccurate to measure is solved. In order to achieve the aim, according to the technical scheme disclosed by the invention, the measuring instrument comprises a photoelectric type sludge thickness measuring part, a liquid impact force and flow velocity measuring part, a handheld terminal and a data processing mainboard, wherein the photoelectric type sludge thickness measuring part is connected to a signal output port of a mainboard shell via a communication line by virtue of a transmitting board; the liquid impact force and flow velocity measuring part is connected to a force measuring signal port of the mainboard shell by virtue of a force measuring signal line; the handheld terminal is connected to an RS485 communication port of the mainboard shell by virtue of an RS485 data communication line; and the data processing mainboard is respectively connected with the signal output port, a signal receiving port, the force measuring signal port and the RS485 communication port.
Description
First, technical field
The invention belongs to mud flow measurement technology field and in particular to a kind of easily precipitate water quality open channel flow rate measuring instrument and
Its measuring method.
2nd, background technology
All rivers, canal, there is the water movement of Free Surface in artificial tunnel, referred to as open-channel flow.Open Channels Flowmeter should
Use all urban water supplies flume, Cooling Water From Thermal Power Plants diversion and drainage ditch, waste water control flow into and discharge canal, industrial and mining establishment
Discharge of wastewater and hydraulic engineering and agricultural irrigation channel.At present, the domestic application aspect in flow rate calculation and measuring method
It is in the budding stage on the whole, achieve certain achievement, but also very big gap compared with abroad.
Conventional open channel flow rate instrument by measuring principle substantially can be divided into weir method, flow measurement channel process, flow velocity-water level calculating method and
Electromagnetic flowmeter method.The pumping equipment that open channel is commonly used as colliery, due to its specific use environment, mixes unavoidably in water in a canal
The particulate matters such as cinder, soil and a small amount of rubbish.When these cinders, soil are slowly deposited in open channel, can slowly lift
High water level, the open channel flow rate measuring instrument before installed needs to use weir plate to the distance of horizontal plane when measuring flow, due to miscellaneous
The precipitation of matter, the distance of the weir plate that such sensor records to horizontal plane is just inaccurate, and thus counted flow is naturally just inaccurate
Really, in the same measurement in flume flow meter, if having impurity in trunnion upstream side deposition, then record with respect to trunnion bottom
The water level h of upstream side will be higher, the flow so recording is obviously inaccurate.Which kind of measuring method therefore above is all deposited
In same problem：Silt deposit thickness has an impact to flow measurement accuracy.
Current meter can be divided into rotating element current meter and non-rotating element current meter from its working method again.Rotator type flow velocity
Instrument is simple, practical, but no automated system interface；Non- rotating element current meter mainly has time difference method ultrasonic current metre, electric wave stream
Fast instrument and supersonic Doppler current meter etc.：Though time difference method ultrasonic current metre can be connected with automatic monitoring system interface,
Installation difficulty, silt has an impact to measuring distance；Boating type Doppler profile flow velocity measuring system is not suitable for monitoring for a long time,
There is influence to sediment measuring distance；Horizontal Doppler profile flow velocity measuring system can access monitoring system and supervises for a long time
Survey, but still there is influence to sediment measuring distance.
For solving the above problems, developing a kind of open channel flow rate measuring instrument solving silt deposit thickness effect certainty of measurement is
Very necessary.
3rd, content of the invention
The present invention, in order to solve the weak point in above-mentioned background technology, provides a kind of water quality open channel flow rate that easily precipitates to measure
Instrument and its measuring method.It can be real-time, online, accurately measurement open channel flow rate and do not affected by silt deposit thickness,
Solve open channel flow rate and measure this difficult problem inaccurate.
For achieving the above object, the technical solution used in the present invention is：A kind of easily precipitation water quality open channel flow rate measuring instrument, its
It is characterised by：Process master including photo-electric surveying on sludge thickness part, liquid impulse force flow-speed measurement part, handheld terminal data
Plate, described photo-electric surveying on sludge thickness part is connected as an entirety with liquid impulse force flow-speed measurement part by screw rod；
Described photo-electric surveying on sludge thickness part is connected on the signal output port of mainboard shell by expelling plate order wire, leads to
Cross receiver board order wire to be connected on the receiver port of mainboard shell, described liquid impulse force flow-speed measurement part passes through to survey
Force signal line is connected to the dynamometry signal port of mainboard shell, and described handheld terminal is connected to by RS485 data telecommunication line
On the RS485 COM1 of mainboard shell, described data processing mainboard respectively with signal output port, receiver port,
Dynamometry signal port and RS485 COM1 connect.
Described photo-electric surveying on sludge thickness part includes shell bottom plate and the sheath top plate one being parallel to each other, described
It is provided with perpendicular expelling plate shell and receiver board shell, outside described expelling plate between shell bottom plate and sheath top plate one
Expelling plate is embedded with shell, described receiver board shell is embedded with receiver board；
Several light emitting diodes are equidistantly distributed with described expelling plate, described expelling plate is sealed in by marine glue
On expelling plate shell；
Several phototriodes are equidistantly distributed with described receiver board, described receiver board is sealed in by marine glue
On receiver board shell；
Described light emitting diode is corresponded with the lamp holder of phototriode；
Expelling plate COM1 and receiver board communication ends are respectively arranged with described expelling plate shell and receiver board shell
Mouthful.
Described liquid impulse force flow-speed measurement part includes sheath top plate two, and described sheath top plate two is passed through sensor
Fixing bolt is connected with LOAD CELLS, and one end of described sheath top plate two is connected with force rod by rotating shaft.
It is fixed with mainboard shell also by bolt, described mainboard enclosure is fixed with number in described sheath top plate two
According to processing main plate.
Described LOAD CELLS is connected on dynamometry signal port by dynamometry holding wire.
Described handheld terminal is connected with data processing mainboard by RS485 data telecommunication line, is used for carrying out parameter setting.
Described photo-electric surveying on sludge thickness part is combined with data processing mainboard for measuring water level, mud position position；
Described liquid impulse force flow-speed measurement part is combined the flow velocity for measuring current with data processing mainboard；Described handheld terminal
For arrange parameter.
The measuring method of described a kind of easy precipitation water quality open channel flow rate measuring instrument is it is characterised in that methods described step
For:
(1) select the position installing instruments：Selection channel is regular, canal bottom is smooth, installation site water speed in front and back is more steady
Place；
(2) record installation parameter：Adjust the distance from bottom shell bottom plate 3～5cm of force rod, record this distance conduct and be subject to
Power bar height；Measurement width of the channel, rotating shaft are to LOAD CELLS stress point apart from l1, rotating shaft is to force rod bottom apart from l2, stress
The width of bar is lWide；
(3) instrument loads open channel：Measurement apparatus are integrally put into the installation site of selection, shell bottom plate is low with canal closely to be connect
Touch, current flow through on shell bottom plate, along water (flow) direction, first pass through liquid impulse force flow-speed measurement part, then through photoelectricity
Formula surveying on sludge thickness part；
(4) determine calibration flow velocity：Measure bottom, centre, surface and force rod respectively using method of standard table and cross water same
The water speed of section part, draws metastable meansigma methodss as calibration flow velocity；
(5) use handheld terminal arrange parameter：The parameter of record, calibration flow velocity are arranged in data processing mainboard, returns
Video data is observed, including water level, mud position, temperature, flow, flow velocity, impulse force in the currently monitored interface returning to handheld terminal；
(6) data operation.
According to the parameter of the parameter collecting and user setup, data processing mainboard carries out calculation process, obtains final
Water level, mud position, temperature, flow, flow velocity, impulse force.
First, data processing mainboard is first calculated water level, mud position, temperature.The letter being collected according to temperature collection circuit
Number, data processing mainboard directly computing can obtain temperature.Sampled value according to photo-electric surveying on sludge thickness part and user
The pedestal value of setting, draws water level, the height of mud position；
Secondly, the force rod according to user setup highly draws the force rod underwater penetration h (water level-force rod height of reality
Degree)；
3rd, calculate starting force F0.The biography of weighing that data processing mainboard collects according to liquid impulse force flow-speed measurement part
The pressure F that sensor is subject toPressure, and l1、l2、lWide, h, calibration flow velocity, calculate starting force F0.COMPREHENSIVE CALCULATING formula is：
4th, calculate flow velocity v.The pressure F that data processing mainboard is subject to according to LOAD CELLSPressure, and l1、l2、lWide、h、
Starting force F0, the water velocity of reality is calculated according to above formula；
Finally, calculated flow rate.Height of water level deducts the cross-section of river height without mud that mud position height obtains reality, root
According to the shape (trapezoidal, rectangle) of the cross-section of river, calculate accurate discharge section area, in conjunction with the flow velocity calculating, utilize
Velocity-area method can obtain the flow of current：Q=vSt, wherein Q are water flow, and S is discharge section area, and t is the time.
(7) access hydrologic monitoring system：Using RS485 order wire, the RS485 COM1 of measuring instrument is connected to the hydrology
Communication line between the two is built on the RS485 communication interface of monitoring system, the data collecting is uploaded to water by measuring instrument
Civilian monitoring system software, user the real time data interface of hydrologic monitoring systems soft ware just see water level, mud position, temperature, flow,
Flow velocity, impulse force information.
Compared with prior art, the present invention have the advantage that as follows with effect：1. multi-parameter monitoring：Water flow velocity can be monitored
Multiple hydrologic parameter such as degree, silt depth, water level, water temperature, flow；
2. online real-time monitoring：This measuring instrument has system interface, can be directly accessed hydrologic monitoring system, by the hydrology
Monitoring system is analyzed to the hydrologic parameter monitoring and processes, and is suitable for long-time monitoring；
3. solve the impact to accuracy of measurement for the silt deposit thickness：This measuring instrument is being calculated using velocity-area method
It is contemplated that the impact to current size for the silt deposit thickness during flow, deduct silt depth when calculating, the face obtaining
Amass the direct cross-sectional area for current, therefore can more accurately calculate real channel flow value；
4. simple, convenient：This measuring instrument can access that hydrologic monitoring is system combined is used it is also possible to set as portable
For being used alone, simple to operate, easy to use.
Present invention mainly solves the technical barrier of open channel silt deposit thickness effect flow measurement accuracy, accessible water
On-line real time monitoring open channel flow rate and related hydrologic parameter in civilian monitoring system, can create huge economic benefit and society's effect
Benefit.
4th, brief description
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the photo-electric surveying on sludge thickness modular construction figure in Fig. 1；
Fig. 3 is the liquid impulse force flow-speed measurement modular construction figure in Fig. 1；
Fig. 4 is the enlarged drawing of dynamometry part in Fig. 3；
Fig. 5 is the structure chart of data processing mainboard；
Fig. 6 is the logic diagram of data processing mainboard；
Fig. 7 is power supply processing circuit schematic diagram；
Fig. 8 is processor and temperature acquisition, reset circuit schematic diagram；
Fig. 9 is addressing circuit theory diagrams；
Figure 10 is pressure acquisition circuit theory diagrams；
Figure 11 is memory circuitry schematic diagram；
Figure 12 is RS485 telecommunication circuit schematic diagram；
Figure 13 is expelling plate ultimate principle figure；
Figure 14 is receiver board ultimate principle figure；
Figure 15 is terminal mainboard block diagram；
Figure 16 is circuit theory diagrams in addition to power supply for the terminal mainboard；
Figure 17 is film key circuit theory diagrams；
In figure, 1- expelling plate shell, 2- receiver board shell, 3- expelling plate, 4- receiver board, 5- light emitting diode, 6- is photosensitive
Audion, 7- marine glue, 8- shell fixing bolt, 9- shell bottom plate, 10- connecting plate, 11- sheath top plate one, 12- expelling plate leads to
Letter port, 13- receiver board COM1,14- data processing mainboard, 15- signal output port, 16- receiver port, 17-
RS485 COM1,18 sheath top plate two, 19 LOAD CELLSs, 20 sensor fixing bolts, 21 stress points,
22 force rods, 23 rotating shafts, 24 dynamometry signal ports, 25 mainboard shells, 26 handheld terminals, 27 transmitting board communications
Line, 28 receiver board order wires, 29- dynamometry holding wire, 30-RS485 data telecommunication line, 31- screw rod.
5th, specific embodiment
The present invention is described in detail with reference to the accompanying drawings and detailed description.
Referring to Fig. 1 Fig. 5：A kind of easily precipitate water quality open channel flow rate measuring instrument, including photo-electric surveying on sludge thickness part,
Liquid impulse force flow-speed measurement part, handheld terminal 26 data processing main plate 14, described photo-electric surveying on sludge thickness part
With liquid impulse force flow-speed measurement part, one entirety is connected as by screw rod 31；Described photo-electric surveying on sludge thickness part leads to
Cross on the signal output port 15 of the mainboard shell 25 that expelling plate order wire 27 is connected to data processing mainboard 14, by receiver board
Order wire 28 is connected on the receiver port 16 of the mainboard shell 25 of data processing mainboard 14, described liquid impulse force flow velocity
Measurement part is connected to the dynamometry signal port 24 of the mainboard shell 25 of data processing mainboard 14 by dynamometry holding wire 29, described
Handheld terminal 26 be connected to by RS485 data telecommunication line 30 data processing mainboard 14 mainboard shell 25 RS485 communication
On port 17.Described data processing mainboard 14 respectively with signal output port 15, receiver port 16, dynamometry signal port
24 and RS485 COM1s 17 connect.
Described photo-electric surveying on sludge thickness part includes shell bottom plate 9 and the sheath top plate 1 being parallel to each other, institute
It is provided with perpendicular expelling plate shell 1 and receiver board shell 2 between the shell bottom plate 9 stated and sheath top plate 1, described
Expelling plate shell 1 on be embedded with expelling plate 3, described receiver board shell 2 is embedded with receiver board 4；
Several light emitting diodes 5 are equidistantly distributed with described expelling plate 3, described light emitting diode 5 is embedded to be sent out
Penetrate in plate 3, described expelling plate 3 is sealed on expelling plate shell 1 by marine glue 7, and the lamp holder of described light emitting diode 5 does not have
Have and all sealed；
Several phototriodes 6 are equidistantly distributed with described receiver board 4, described phototriode 6 is embedded at and connects
Receive in plate 4, described receiver board 4 is sealed on receiver board shell 2 by marine glue 7, and the lamp holder of described phototriode 6 does not have
Have and all sealed；
Described light emitting diode 5 is corresponded with the lamp holder of phototriode 6；Described two neighboring light emitting diode
5 spacing is equal with the spacing of two neighboring photosensitive audions 6.
Expelling plate COM1 12 is respectively arranged with described expelling plate shell 1 and receiver board shell 2 and receiver board leads to
Letter port 13.
Described expelling plate COM1 12 one end is connected on expelling plate 3, and the other end is connected to data processing mainboard 14
The signal output port 15 of mainboard shell 25 on, described receiver board COM1 13 one end is connected on receiver board 4, another
Hold on the receiver port 16 of mainboard shell 25 being connected to data processing mainboard 14.
Described data processing mainboard 14 is arranged in mainboard shell 25.
Liquid impulse force flow-speed measurement part includes sheath top plate 2 18, and described sheath top plate 2 18 is by carbon steel or stainless
The fixed seat composition of two difference fixed rotating shafts 23 and LOAD CELLS 19 is welded with steel steel plate, described sheath top plate 2 18
Upper by sensor fixing bolt 20, LOAD CELLS 19 is connected in fixed seat, described LOAD CELLS model L6D-
Cx-xxkg-0.4B, range can meet 2.5kg～50kg, and one end of described sheath top plate two is connected with stress by rotating shaft 23
Bar 22, described sheath top plate 2 18 has been bolted mainboard shell 25, has been fixed with inside described mainboard shell 25
Data processing mainboard 14, described LOAD CELLS 19 is connected to dynamometry signal port 24 by dynamometry holding wire 29.
Handheld terminal includes terminal enclosure, LCDs, film key, terminal mainboard, RS485 COM1.Described
Terminal enclosure front equipped with film key and LCDs, RS485 COM1 is left in upper end, terminal enclosure interior
Portion is fixed with terminal mainboard.Described terminal mainboard is connected with film key, LCDs, RS485 COM1, for complete
Become setting, the display function of parameter.
The two ends of described expelling plate shell 1 and receiver board shell 2 are perpendicularly fixed at shell bottom by shell fixing bolt 8
On plate 9 and sheath top plate 1, described expelling plate shell 1 and receiver board shell 2 are arranged in parallel, and connecting plate is passed through in centre
10 is fixing.
Photo-electric surveying on sludge thickness part is combined with data processing mainboard, different according to the sampled value in different medium,
Calculate the thickness of mud, the height of water level, temperature.
Liquid impulse force flow-speed measurement part is combined with data processing mainboard, and the pressure according to being applied on LOAD CELLS changes
Calculate impulsive force, calculate flow velocity in conjunction with height of water level, silt depth.
Data processing mainboard deducts, first with water level, the cross-section of river height that mud position obtains reality, further according to the cross-section of river
Shape (trapezoidal, rectangle), accurately calculate the area of the cross-section of river without silt depth, combine with flow velocity using stream
Speed-area-method obtains accurate open channel flow rate.
A kind of step of measuring method of easy precipitation water quality open channel flow rate measuring instrument is:
(1) select the position installing instruments：Selection channel is relatively regular as far as possible, canal bottom is more smooth, installation site water in front and back
Speed is more local；
(2) record installation parameter：Adjust the distance from bottom shell bottom plate 3～5cm of force rod, record this distance conduct and be subject to
Power bar height；Measurement width of the channel, rotating shaft are to LOAD CELLS stress point apart from l1, rotating shaft is to force rod bottom apart from l2, stress
The width of bar is lWide；
(3) instrument loads open channel：Measurement apparatus are integrally put into the installation site of selection, shell bottom plate is low with canal closely to be connect
Touch, current flow through on shell bottom plate.Along water (flow) direction, first pass through liquid impulse force flow-speed measurement part, then through photoelectricity
Formula surveying on sludge thickness part；
(4) determine calibration flow velocity：Measure bottom, centre, surface etc. using method of standard table respectively with force rod in same mistake
The water speed of water section part, calculates a metastable mean flow rate as calibration flow velocity, for flow velocity calibration；
(5) use handheld terminal arrange parameter：The parameter of record, calibration flow velocity are arranged in data processing mainboard, returns
Video data is observed, including water level, mud position, temperature, flow, flow velocity, impulse force in the currently monitored interface returning to handheld terminal.
(6) data operation.
According to the parameter of the parameter collecting and user setup, data processing mainboard carries out calculation process, obtains final
Water level, mud position, temperature, flow, flow velocity, impulse force.
First, data processing mainboard is first calculated water level, mud position, temperature.The letter being collected according to temperature collection circuit
Number, data processing mainboard directly computing can obtain temperature.Sampled value according to photo-electric surveying on sludge thickness part and user
The pedestal value of setting, draws water level, the height of mud position；
Secondly, the force rod according to user setup highly draws the force rod underwater penetration h (water level-force rod height of reality
Degree)；
3rd, calculate starting force F0.The biography of weighing that data processing mainboard collects according to liquid impulse force flow-speed measurement part
The pressure F that sensor is subject toPressure, and l1、l2、lWide, h, calibration flow velocity, calculate starting force F0.COMPREHENSIVE CALCULATING formula is：
4th, calculate flow velocity v.The pressure F that data processing mainboard is subject to according to LOAD CELLSPressure, and l1、l2、lWide、h、
Starting force F0, the water velocity of reality is calculated according to above formula.
Finally, calculated flow rate.Height of water level deducts the cross-section of river height without mud that mud position height obtains reality, root
According to the shape (trapezoidal, rectangle) of the cross-section of river, calculate accurate discharge section area, in conjunction with the flow velocity calculating, utilize
Velocity-area method can obtain the flow of current：Q=vSt, wherein Q are water flow, and S is discharge section area, and t is the time.
(7) access hydrologic monitoring system：Using RS485 order wire, the RS485 COM1 of measuring instrument is connected to the hydrology
Communication line between the two is built on the RS485 communication interface of monitoring system.The data collecting is uploaded to water by measuring instrument
Civilian monitoring system software, user at the real time data interface of hydrologic monitoring systems soft ware it is seen that water level, mud position, temperature,
Flow, flow velocity, impulse force information.
Referring to Fig. 6：Described data processing mainboard 14 includes processor circuit, power supply processing circuit, reset circuit, storage
Device circuit, RS485 telecommunication circuit, addressing circuit, pressure acquisition circuit and temperature collection circuit, described processor circuit is respectively
With include processor circuit, power supply processing circuit, reset circuit, memory circuitry, RS485 telecommunication circuit, addressing circuit, pressure are adopted
Collector and temperature collection circuit connect, power supply processing circuit respectively with reset circuit, memory circuitry, RS485 telecommunication circuit,
Addressing circuit, pressure acquisition circuit and temperature collection circuit connect.
Referring to Fig. 7：Each chip that described power supply processing circuit is mainly on data processing mainboard 14 provides power supply to supply
The function of electricity, the DC_IN of in figure is external 18V direct current supply, and the voltage that VCC represents output is 3.3V, and GND represents power supply ground,
It is powered to each chip.
Referring to Fig. 8：The master chip of described processor circuit is single-chip microcomputer MSP430F5438A, is used for completing each several part electricity
The control on road, the collection of parameter, computing.13rd, it is connected with the crystal oscillator of 32768HZ between 14 pins, be connected between 89,90 pins
The crystal oscillator of 16MHZ, two crystal oscillators provide, for each chip, the clock signal needing.2nd, 3 pins are connected to data processing mainboard 14
Signal output port 15, for being connected with expelling plate 3, controls the luminous of light emitting diode 5,17～24 pins are connected at data
The receiver port 16 of reason mainboard 14, for being connected with receiver board 4, is a part for addressing circuit.
The master chip of described temperature collection circuit is DS18B20, the 26 pin phases of its pin 2 and MSP430F5438A
Even, for completing the acquisition function of temperature.
The master chip of described reset circuit is SP706SEN, its pin 6,7 pin 79 with MSP430F5438A respectively,
96 are connected.
Referring to Fig. 9：The master chip of described addressing circuit be CD4051BCM chip, its pin 9,10,11 respectively with
Pin 25,24,23 pin of MSP430F5438A is connected；Its pin 13,14,15,12,1,5,2,4 is connected respectively at data
The signal receiving port port 16 of reason mainboard, for being connected with receiver board.Be numbered in its circuit diagram the end points of TA with
97 pins of MSP430F5438A are connected, and the signal input for receiving phototriode on receiver board arrives
Row operation is entered in MSP430F5438A.
Referring to Figure 10：The master chip of described pressure acquisition circuit is ADS1246 chip, is subject to for gathering LOAD CELLS
The pressure size arriving.The 3 of chip ADS1246,4,11,12,13,14,15, the 16 pins pipe with chip MSP430F5438A respectively
Foot 43,47,48,49,31,32,50,51 connects, and by MSP430F5438A, the collection of pressure is controlled, computing.
Referring to Figure 11：The master chip of described memory circuitry is 24LC1025, and 5,6,7 pins are respectively with 69,70,68
Pin is connected.
Referring to Figure 12：The master chip of described RS485 telecommunication circuit be ADM2483, its pin 3,4,6 respectively with
The pin 81,82,80 of MSP430F5438A is connected, for carrying out the transmitting-receiving of RS485 signal；Port 485B, 485A are used for and it
His external equipment or software are communicated.
Referring to Figure 13：Expelling plate 3 partial circuit plate is mainly made up of N number of light emitting diode and Shifting chip SN74HC164,
Light emitting diode is lighted according to the control of data processing mainboard.
The described main sequential illumination being realized multiple lamps by Shifting chip SN74HC164 of expelling plate 3.SN74HC164 is
One 8 bit string conversion and control chip, are mainly used in digital circuit and the application of LED display control circuit, this product is as 8
Passage output LED drives special chip to use.To one high level signal of this chip, output pin is made to shift successively, LED is suitable
Sequence is lighted, and simultaneously using the output signal of last pin of this chip controls as the input signal of next chip, thus passs
Push, it is possible to achieve the sequential illumination of multiple lamps.
Referring to Figure 14：Receiver board 4 partial circuit plate is mainly by N number of phototriode and multiplexer MM74HC4051 group
Become, when expelling plate lights, the optical signal that the corresponding fluorescent tube of receiver board will receive some strength is turned on, and is believed according to light
Number strong and weak different, switch on intensity is different, and data processing mainboard is calculated according to the intensity of each fluorescent tube receiving, thus
Judge water level mud position.Receiver board, mainly using device phototriode PT333, turns on when receiving the light of transmitting tube, root
Different according to receiving light intensity, conducting is of different sizes；Multiplexer MM74HC4051 is complete together with the CD4051BCM on mainboard
Become addressing function, select to need the fluorescent tube of output collection signal.
Referring to Figure 15：Described handheld terminal mainboard includes power supply processing circuit, processor circuit, reset circuit, RS485
Telecommunication circuit, LCD interface circuit, keyboard interface circuit, described processor circuit respectively with power supply processing circuit, multiple
Position circuit, RS485 telecommunication circuit, LCD interface circuit and keyboard interface circuit connect, power supply processing circuit respectively with multiple
Position circuit, RS485 telecommunication circuit, LCD interface circuit and keyboard interface circuit connect；
Referring to Fig. 7：Each chip on described power supply processing circuit predominantly terminal mainboard, LCDs, thin film are pressed
Key provides the function that power supply is powered.
Referring to Figure 16：The master chip of described processor circuit is single-chip microcomputer MSP430F5438A, is used for completing each several part
The control of circuit.13rd, it is connected with the crystal oscillator of 32768HZ between 14 pins, between 89,90 pins, be connected with the crystal oscillator of 16MHZ, two
Individual crystal oscillator provides, for each chip, the clock signal needing.The master chip of described reset circuit is SP706SEN, 6,7 points of its pin
Pin 79 not with MSP430F5438A, 96 is connected.The master chip of described RS485 telecommunication circuit is ADM2483, its pin 3,
4th, 6 are connected with the pin 40,33,39 of MSP430F5438A, respectively for carrying out the transmitting-receiving of RS485 signal；Port 485B, 485A
For with other external device communications.The external interface of described LCD interface circuit is YJ1, main and model
The LCDs of KYDZ12864C-3.3V are connected, the phase of the MSP430F5438A on each pin of interface YJ1 and terminal mainboard
Pin is answered to connect, pin corresponding relation is given in figure.The external interface of described keyboard interface circuit is CZ1, and it 1～8
Foot is connected with 17～24 pins of MSP430F5438A respectively, and 12 feet are connected with 1 foot of SP706SEN, is used for completing reset work(
Energy.
Referring to Figure 17：Described film key is by numeral keys 0～9, ". ", " ← ", " → ", " confirmation ", " ON/OFF ", " multiple
Position " totally 16 button compositions, the circuit theory diagrams of film key are presented in Fig. 17.
Claims (1)
1. a kind of easy precipitation water quality open channel flow rate measuring instrument measuring method it is characterised in that：Described method and step is:
(1) select the position installing instruments：Select channel rule, canal bottom smooth, installation site before and after water speed more smoothly
Side；
(2) record installation parameter：Adjust the distance from bottom shell bottom plate 3～5cm of force rod, record this distance as force rod
Highly；Measurement width of the channel, rotating shaft are to LOAD CELLS stress point apart from l1, rotating shaft is to force rod bottom apart from l2, force rod
Width is lWide；
(3) instrument loads open channel：Measurement apparatus are integrally put into the installation site of selection, shell bottom plate and the low close contact of canal,
Current flow through on shell bottom plate, along water (flow) direction, first pass through liquid impulse force flow-speed measurement part, then become silted up through photo-electric
Mud thickness measure part；
(4) determine calibration flow velocity：Measure bottom, centre, surface and force rod using method of standard table respectively in the same cross-section of river
The water speed at place, draws metastable meansigma methodss as calibration flow velocity；
(5) use handheld terminal arrange parameter：The parameter of record, calibration flow velocity are arranged in data processing mainboard, returns to
Video data is observed, including water level, mud position, temperature, flow, flow velocity, impulse force in the currently monitored interface of handheld terminal；
(6) data operation：
According to the parameter of the parameter collecting and user setup, data processing mainboard carries out calculation process, obtains final water
Position, mud position, temperature, flow, flow velocity, impulse force；
First, data processing mainboard is first calculated water level, mud position, temperature, the signal collecting according to temperature collection circuit, number
Directly computing can obtain temperature according to processing main plate, the sampled value according to photo-electric surveying on sludge thickness part and user setup
Pedestal value, draws water level, the height of mud position；
Secondly, the force rod according to user setup highly show that force rod underwater penetration h of reality is equal to water level-force rod height
Degree；
3rd, calculate starting force F0, data processing mainboard is subject to according to the LOAD CELLS that liquid impulse force flow-speed measurement part collects
The pressure F arrivingPressure, and l1、l2、lWide, h, calibration flow velocity, calculate starting force F0COMPREHENSIVE CALCULATING formula is：
4th, calculate flow velocity v, the pressure F that data processing mainboard is subject to according to LOAD CELLSPressure, and l1、l2、lWide, h, initial
Power F0, the water velocity of reality is calculated according to above formula；
Finally, calculated flow rate, height of water level deducts the cross-section of river height without mud that mud position height obtains reality, according to mistake
The shape of water section, calculates accurate discharge section area, in conjunction with the flow velocity calculating, permissible using velocity-area method
Obtain the flow of current：Q=vSt, wherein Q are water flow, and S is discharge section area, and t is the time；
(7) access hydrologic monitoring system：Using RS485 order wire, the RS485 COM1 of measuring instrument is connected to hydrologic monitoring
Communication line between the two is built on the RS485 communication interface of system, the data collecting is uploaded to hydrology prison by measuring instrument
Examining system software, user just sees water level, mud position, temperature, flow, stream at the real time data interface of hydrologic monitoring systems soft ware
Speed, impulse force information；
The structure of the easy precipitation water quality open channel flow rate measuring instrument that above-mentioned measuring method is adopted includes photo-electric surveying on sludge thickness
Part, liquid impulse force flow-speed measurement part, handheld terminal (26) data processing main plate (14), described photo-electric silt depth
Measurement part and liquid impulse force flow-speed measurement part are connected as an entirety by screw rod (31)；Described photo-electric silt depth
Measurement part is connected on the signal output port (15) of mainboard shell (25) by expelling plate order wire (27), by receiver board
Order wire (28) is connected on the receiver port (16) of mainboard shell (25), and described liquid impulse force flow-speed measurement part leads to
Cross the dynamometry signal port (24) that dynamometry holding wire (29) is connected to mainboard shell (25), described handheld terminal (26) passes through
RS485 data telecommunication line (30) is connected on the RS485 COM1 (17) of mainboard shell (25), described data processing mainboard
(14) respectively with signal output port (15), receiver port (16), dynamometry signal port (24) and RS485 COM1
(17) connect；
Described photo-electric surveying on sludge thickness part includes the shell bottom plate (9) being parallel to each other and sheath top plate one (11), institute
It is provided with perpendicular expelling plate shell (1) and receiver board shell between the shell bottom plate (9) stated and sheath top plate one (11)
(2) expelling plate (3) is embedded with, described expelling plate shell (1), described receiver board shell (2) is embedded with receiver board
(4)；
Several light emitting diodes (5) are equidistantly distributed with described expelling plate (3), described expelling plate (3) passes through marine glue
(7) it is sealed on expelling plate shell (1)；
Several phototriodes (6) are equidistantly distributed with described receiver board (4), described receiver board (4) passes through marine glue
(7) it is sealed on receiver board shell (2)；
Described light emitting diode (5) is corresponded with the lamp holder of phototriode (6)；
It is respectively arranged with expelling plate COM1 (12) and receiver board on described expelling plate shell (1) and receiver board shell (2)
COM1 (13)；
Described liquid impulse force flow-speed measurement part includes sheath top plate two (18), and described sheath top plate two (18) is upper to be passed through to pass
Sensor fixing bolt (20) is connected with LOAD CELLS (19), and one end of described sheath top plate two is connected with by rotating shaft (23)
Force rod (22)；
It is fixed with mainboard shell (25) also by bolt, described mainboard shell (25) is internal in described sheath top plate two (18)
It is fixed with data processing mainboard (14)；
Described LOAD CELLS (19) is connected on dynamometry signal port (24) by dynamometry holding wire (29)；
Described handheld terminal (26) is connected with data processing mainboard (14) by RS485 data telecommunication line (17), is used for carrying out
Parameter setting；
Described photo-electric surveying on sludge thickness part is combined for measuring water level, mud position position with data processing mainboard (14)；
Described liquid impulse force flow-speed measurement part is combined for measuring the flow velocity of current with data processing mainboard (14)；Described is hand-held
Terminal is used for arrange parameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510057998.3A CN104567831B (en) | 2015-02-04 | 2015-02-04 | Easily precipitated water quality open channel flow measuring instrument and measurement method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510057998.3A CN104567831B (en) | 2015-02-04 | 2015-02-04 | Easily precipitated water quality open channel flow measuring instrument and measurement method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104567831A CN104567831A (en) | 2015-04-29 |
| CN104567831B true CN104567831B (en) | 2017-02-22 |
Family
ID=53084450
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510057998.3A Active CN104567831B (en) | 2015-02-04 | 2015-02-04 | Easily precipitated water quality open channel flow measuring instrument and measurement method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104567831B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104913831A (en) * | 2015-06-12 | 2015-09-16 | 山西戴德测控技术有限公司 | Device for simultaneous hierarchical measurement of water level and water-mud mixture level |
| CN109473020A (en) * | 2018-11-09 | 2019-03-15 | 中山大学 | A kind of intelligent hydraulics of open channels experimental system integrating flow, temperature and water level management |
| CN110763289A (en) * | 2019-10-14 | 2020-02-07 | 朱晓璞 | River course cross section measuring device |
| CN110986892A (en) * | 2019-10-16 | 2020-04-10 | 西北农林科技大学 | Runoff flow velocity and flow monitoring method, monitoring device and monitoring system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2859465Y (en) * | 2006-05-26 | 2007-01-17 | 熊焕祈 | Strain target-type flowmeter |
| CN201016761Y (en) * | 2007-03-09 | 2008-02-06 | 滕杰 | Cantilevered flow sensor |
| CN202109942U (en) * | 2011-03-31 | 2012-01-11 | 山东科技大学 | Novel flow measuring device for measuring flow of sewage of open channel |
| CN202204475U (en) * | 2011-07-22 | 2012-04-25 | 威海市海王旋流器有限公司 | Photoelectric sand level detector |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6863860B1 (en) * | 2002-03-26 | 2005-03-08 | Agr International, Inc. | Method and apparatus for monitoring wall thickness of blow-molded plastic containers |
| US20040075847A1 (en) * | 2002-10-18 | 2004-04-22 | Mccracken Thomas N. | Sensor arrangement to determine vehicle height |
-
2015
- 2015-02-04 CN CN201510057998.3A patent/CN104567831B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2859465Y (en) * | 2006-05-26 | 2007-01-17 | 熊焕祈 | Strain target-type flowmeter |
| CN201016761Y (en) * | 2007-03-09 | 2008-02-06 | 滕杰 | Cantilevered flow sensor |
| CN202109942U (en) * | 2011-03-31 | 2012-01-11 | 山东科技大学 | Novel flow measuring device for measuring flow of sewage of open channel |
| CN202204475U (en) * | 2011-07-22 | 2012-04-25 | 威海市海王旋流器有限公司 | Photoelectric sand level detector |
Non-Patent Citations (1)
| Title |
|---|
| 智能明渠流量传感器的研究;刘伟光;《CNKI中国优秀硕士学位论文全文数据库 工程科技Ⅱ辑》;20120531;第7-50页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104567831A (en) | 2015-04-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104567831B (en) | Easily precipitated water quality open channel flow measuring instrument and measurement method thereof | |
| CN105823526A (en) | Deposition and water level monitor and application method thereof | |
| CN104236626A (en) | Integrated online monitoring system for drainage pipeline liquid level and flow | |
| CN203066091U (en) | Monitoring system of foundation pit dewatering and pumping test | |
| CN101672647A (en) | Ultrasonic open channel flow rate comprehensive monitoring instrument and measuring method thereof | |
| CN105203158A (en) | Automatic horizontal displacement and sedimentation monitoring system based on GPRS | |
| US20110255735A1 (en) | Probe monitoring system for riverbed elevation monitoring at bridge piers | |
| CN104613880A (en) | Photoelectric type sludge thickness measuring instrument and measuring method thereof | |
| CN203759859U (en) | Deep foundation pit deformation wireless test device and deep foundation pit deformation test system | |
| CN109253765A (en) | River discharge monitors measuring system and method for calculating flux on-line | |
| CN104132710B (en) | Stage-discharge sensor, stage-discharge monitoring system and stage-discharge monitoring method | |
| CN107313052A (en) | A kind of synchronous detecting system of pipe cathode current potential and detection method | |
| CN107246896A (en) | A kind of intelligence, removable open channel flow rate monitor and its monitoring method | |
| CN108956084A (en) | A kind of river model test instrument is laid and measurement method | |
| CN111337100A (en) | Water level measuring method and device based on strip-shaped water level scale | |
| CN110986892A (en) | Runoff flow velocity and flow monitoring method, monitoring device and monitoring system | |
| CN105352556A (en) | Method for rapidly predicting maximum water inflow by means of dynamic flow data | |
| CN103901928B (en) | High-reliability system for automatically monitoring water temperature and water level through multiple channels | |
| CN210141850U (en) | Concrete thickness detection device based on impact elastic wave | |
| CN104597286A (en) | Yellow River ice run ice floating speed measuring method | |
| CN1250943C (en) | Natural dome soil and water losses monitoring system using nine pore bypass method | |
| CN201731919U (en) | Intelligent contact card oil gas integrating meter | |
| CN110455259A (en) | A kind of Geography monitor device and the river Form Development based on the device monitor system | |
| CN101813793B (en) | Digital control type pluviometer | |
| CN202048955U (en) | Water level observation device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |