CN100578164C - Preparation of trough body flow detecting plate type intelligent device - Google Patents
Preparation of trough body flow detecting plate type intelligent device Download PDFInfo
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- CN100578164C CN100578164C CN200710139666A CN200710139666A CN100578164C CN 100578164 C CN100578164 C CN 100578164C CN 200710139666 A CN200710139666 A CN 200710139666A CN 200710139666 A CN200710139666 A CN 200710139666A CN 100578164 C CN100578164 C CN 100578164C
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Abstract
The invention relates to a sensor and preparation for sewage flux detection. It is used for the water flux auto-detection, control and management in the city environment protection, mine, metallurgy, constructing material, electric power and chemical industry. The device is made up of the open-channel flux slot and the board intelligent sensor. The open-channel flux slot is designed according to the open-channel hydrodynamics Bernoulli's theory. The board intelligent sensor is divided into two parts: one part is signal detection part; the other is intelligent data processing part and the wireless data transforming part. The detection signal is not been influence by the temperature and pressure. The detection error is small and stable, reliable. It is not adhered by the mud and sewage. It is convenience to be installed, used and maintained. It is proper for the flux meter of the wild open-channel and the cloacae out.
Description
One, technical field
The preparation that a kind of cell body discharge of sewage of the present invention detects plate type intelligent device belongs to the test technique automatic field, particularly is a kind of sensor that the discharge of sewage detects that is used for.
Two, background technology
Many at the technology and the product of the employing of discharge of sewage context of detection both at home and abroad at present, according to different measuring conditions and measurement purpose, the sewage flowmeter that adopts mainly contains following several at present: differential pressure flowmeter, volumeter, rotary flowmeter, water wheel type flowmeter, electromagnetic type flow meter, ultrasonic type flowmeter, open-channel meter etc.Below doing one respectively simply introduces:
1. differential pressure flowmeter
Differential pressure flowmeter also is head formula speed flowrate meter, is to measure flow velocity indirectly by measuring head difference.The main device that belongs to this class flowmeter has Venturi meter, orifice flowmeter and pitot tube flowmeter.
2. volumeter
Volumeter is under the steady flow condition, and the instrument of high-acruracy survey flow is characterized in that one or more mobile volume parts are contained on the runner, are used for test traffic.The flow that belongs to this class is in respect of reciprocating piston meter, rotary-piston type flowmeters, rotating vane flowmeter and rotary turnplate formula flowmeter.
3. rotary flowmeter
Rotary flowmeter is the flowmeter that a kind of sectional area changes, and it is made of a taper VERTICAL TUBE and float.Liquid drives float and rises from going into down.Float is used to refer to flow, and it is heavier than fluid, when fluid flows through tapered tube, till float rises when the gravity of float and buoyancy of liquid balance each other.Dynamic balance formula according to float calculates volumetric flow rate.Spinner-type flowmeter only is used to the liquid that cleans, and can only survey than low discharge.
4. water wheel type flowmeter
The operation of water wheel type flowmeter is similar to water wheels, and impeller is contained in one to be had in the work plug that fluid flows through, and is rotated by hydraulic shock blade surface impeller, and the rotation of rotor can directly drive a register, the indoor flow increment of writing task.
5. electromagnetic type flow meter
Electromagnetic flowmeter is a kind of instrument of measuring the conductive liquid flow of making according to Faraday's electromagnetic induction law.Electromagnetic Flow can solve the problem that other flowmeter is difficult for application in respect of a series of good characteristics, as the measurement of dirty stream, corrosion stream.The seventies and eighties, electromagnetic flowmeter had important breakthrough technically, made it become a widely used class flowmeter, and its use amount number percent constantly rises in flow instrument.
6. ultrasonic flow meter
Ultrasonic flow meter is to flow work to supersonic beam (or ultrasonic pulse) in order to measure the instrument of flow by test fluid.According to the principle to input, ultrasonic flowmeter can be divided into propagation speed differential method (directly time difference method, time difference method, phase difference method and frequency-difference method), wave beam deflection method, Doppler method, cross-correlation method, space filter method and noise method etc.Ultrasonic flowmeter is the same with electromagnetic flowmeter, because of the instrument circulation passage is not provided with any barrier member, all belong to without hindrance flowmeter, it is a class flowmeter that is suitable for solving the flow measurement difficult problem, in that outstanding advantage is arranged aspect the heavy caliber flow measurement, also be to develop one of flowmeter rapidly in recent years especially.
7. open-channel meter
With the water route of non-full water state circulation, the water route that promptly has free-water level is called open channel (openchannel).The device of measuring water flow in the open channel is called open-channel meter.Open-channel meter also has multiple shapes such as U font, trapezoidal, rectangle except that circle.The applied field of open-channel meter owns: urban water supply flume, thermal power plant's diversion and catch gutter, waste water control flow into and discharging canal, industrial and mining enterprises' water discharging and hydraulic engineering and agricultural irrigation channel.
The technology that can detect the discharge of sewage is many, but because these prior aries are subjected to the restriction of aspects such as service condition, makes their usable range be subjected to very big limitation.Discharge in sewer such as sewage discharge is many, need to detect in the sewer exit, yet existing checkout equipment all is difficult to adapt to installation and operation in sewer, installing space is narrow and small, silt dirt, power supply are difficult, safeguard difficulty etc., particularly among wilderness, instrument and equipment more is difficult to guarantee the normal operation of safety under the situation of unmanned nurse.Still be difficult to realize robotization in commercial Application and the management of urban sewage exhausting control at present.
Along with rapid development of science and technology, the sewage discharge Monitoring and Controlling has been the important component part in the modernization construction, and all anxious treating need accurate, the reliable sewage discharge test technique automatic of solution in many-sided industrial automation construction such as building materials, chemical industry, mine, metallurgy, water conservancy, electric power.
Three, summary of the invention
The purpose that a kind of cell body discharge of sewage of the present invention detects the preparation of plate type intelligent device is:
1, solves the indeterminable problem of prior art, as the extensive adaptability of using under sensor stability, reliability and the mal-condition.
2, enlarge the scope of application, solve easy for installation, working service problem easily.Make it wilderness, sewer outlet, reliability service in containing the liquid stream of silt, dirt in unmanned nurse post.
3, reduce cost, provide a kind of simple in structure, adaptable, but the universal general digital discharge of sewage sensor of Direct Sampling.
A kind of cell body discharge of sewage of the present invention detects plate type intelligent device, it is characterized in that: this device is made up of channel flow measuring tank, plate type intelligent sensor two large divisions, its channel flow measuring tank is according to the design of the basic law of channel flow mechanics bernoulli principle, cell body by the venturi upstream have horizontal bottom even contraction section 9, have even diffuser 10 3 parts that descending grade bottom surface and lateral width venturi section 13 narrow and parallel to each other and downstream have the upstroke slope bottom surface and form; Drive a dovetail groove 14 in the contraction section side, but make in plate type intelligent sensor 11 embedded grooves; 11 fens two large divisions of its plate type intelligent sensor, a part is an input part 18, another part is that part 17 is sent in intelligent data processing section 19 and wireless data change; Its input part 18 is that the dot matrix check-out console that the Digital Detecting circuit that designs with the induction type etection theory is formed constitutes, the wireless data change send part 17 to be retrieved by the data pointwise, statistics, send by the wireless receiving and dispatching of both-way communication and to touch the electric appliance component that piece carries out signal transmitting and form, plate type intelligent sensor 11 internal circuit boards place on the support frame 21, support frame 21 usefulness insulating material are made, the front of support frame 21 is fixed with some sensor chip circuit boards, constitute by signal sampling circuit and dot matrix sampling induction point 15 in the every sensor chip circuit board, the sensor chip circuit board all is fixed on support frame 21 back sides, dot matrix sampling induction point 15 longitudinal frames are 1 millimeter or make dot matrix sampling induction point 15 by request for utilization and make plate type intelligent sensor 11 inside chip circuit board and lead terminals by resistant material, signal element, shell becomes a board-like sensor of solid-state square after casting with insulation filling material.
A kind of cell body discharge of sewage of the present invention detects the preparation of plate type intelligent device, it is characterized in that:
The design of I, channel flow measuring tank and preparation
A, design a kind of specific current cell body (Bashel groove) according to basic law of fluid mechanics, make flow and width of the channel, flow velocity, time become a fixing funtcional relationship, variable has only water level;
B, mathematical model are: the Bashel groove of square-section is observed following formula:
In the formula, C
vFor depending on the efflux coefficient of approaching velocity, C
eFor depending on the coefficient of flow that is rubbed with vortes interference, b is the width of water flow grooves, and h is a water level, b, C in specific current cell body
v, C
eBe constant,, can calculate flow as long as record water level;
The preparation of II, plate type intelligent sensor is divided into two parts to be carried out, and a part is the preparation of circuit chip, and another part is the preparation of structural housing,
A, circuit chip preparation partly, at first select for use dielectric panel to make support frame 21, become the support plate that send part 17 as dot matrix sampling induction point 15 and wireless data, support frame 21 usefulness epoxy resin boards or other dielectric panel are made, then fix some dot matrix sampling induction points 15 to water level detecting in the front of support plate, see structural drawing for details: Fig. 4, Fig. 5, dot matrix sampling induction point 15 is made by non-magnetic corrosion resistant conductor material, vertically sampling induction point resolution is 1 millimeter, the back side of support plate is fixed with some sensor chip circuit boards, other testing circuit and data retrieval, statistics, the circuit block that change is sent is realized the detection of digitized signal according to the interspersed back side that is fixed on support plate of mounting condition with this circuit board, become and send function;
B, structural housing are made with the plasticity insulating material, and partly reinstating plastic water proofing property insulating material with internal circuit and structural housing one is cast into solid-state square, circular, board-like or bar type sensor with circuit chip at last;
C, lead terminal plug-in type lead terminal, this connector need not to do other water-proofing treatment after patching fastening getting well.
III, plate type intelligent sensor 11 is embedded in the dovetail groove of opening on the detection sampling point of the prepared channel flow measuring tank of I 14.
Above-mentioned support frame 21 usefulness epoxy resin boards are made, and sampling induction point 15 is made by non-magnetic, corrosion resistant, conductor material, and shell forms with epoxy resin, plastics or the casting of plastic insulating material; Lead terminal is to make with plastics, epoxy resin, other insulating material or multicore electrical connector with anti-water totally enclosed ability; Circuit chip partly becomes a solid-state entity with structural housing after casting, the overall dimensions of plate type intelligent sensor 11 are according to the channel flow measuring tank design of different size.
Above-mentioned a kind of cell body discharge of sewage detects the using method of plate type intelligent device, it is characterized in that: the first, at first the feed circuit 20 or the external power supply of self-contained battery power supply are connected, the excitation power supply design is powered in 9-6 volt scope, by constant voltage circuit excitation power supply being carried out constant voltage handles, communication is taked regularly and the formula of call standby dormancy formula duty, reduce loss in the signal conveys with this, further improve communication stand-by time and teletransmission ability; The second, plate type intelligent sensor 11 vertically being installed on tank detects in the dovetail groove 14 at position, when water level changes up and down, the corresponding water surface is near certain sensing unit circuit, this circuit produces the upset of triggering property, output signal becomes " 0 " by " 1 ", output signal becomes " 1 " by " 0 " when the material face leaves certain sensing unit, guarantees the neural face of several water levels of sensing unit circuit composition with this; Three, again through microprocessor to each sampling induction point 15 carry out pointwise retrieval, statistics, numeral become give, wireless telecommunications, thereby realize sampling, handle, become and send, the flow detection of total digitalization.
Main application and advantage that a kind of cell body discharge of sewage of invention the present invention detects the preparation of plate type intelligent device are:
1, purposes: the discharge robotization that is used for industrial and mining enterprises such as urban environmental protection, mine, metallurgy, building materials, electric power, chemical industry detects, controls and management.
2, advantage:
A, detection signal have environmental influences such as the temperature of not being subjected to, air pressure.
B, measuring error are little, reliable and stable.
C, contact have the silt of not being afraid of, dirt adhesion.
D, installation, use, easy to maintenance.Not limited by mounting condition, be applicable to the flow metering of unserviced wilderness open channel, sewer outlet.
Four, description of drawings
Fig. 1 is a slot type flow detection intelligence sensor principle
Label among the figure is: 1, constant voltage circuit 2, power circuit 3, wireless transmission circuit 4, Intelligent Measurement and transmission circuit 5, detection signal unit circuit 6, signal sampling circuit
Fig. 2 slot type flow detection intelligence sensor one-piece construction figure
Label among the figure is: 7, water route 8, rectification part 9, contraction section 10, diffuser 11, plate type intelligent sensor 12, groove top 13, venturi
Fig. 3 is a slot type flow detection intelligence sensor split structural drawing
Number in the figure is: 7, water route 8, rectification part 9, contraction section 10, diffuser 11, plate type intelligent sensor 12, groove top 13, venturi 14, dovetail slot
Fig. 4 is plate type intelligent sensor 11 front view (FV)s
Number in the figure is: 15, dot matrix sampling induction point
Fig. 5 is a plate type intelligent sensor side sectional view
Number in the figure is: 15, dot matrix sampling induction point 16, signal transmitting module 17, signal transmitting antenna 18, signal deteching circuit 19, intelligent data treatment circuit 20, feed circuit 21, support frame
Five, embodiment
Embodiment 1: the slot type flow detection intelligence sensor that designs for the coke-oven plant.Be the basic law design Bashel groove according to channel flow mechanics bernoulli principle, the design maximum flow is at the flow tank of 250L/S, and fluid level changes between 0.03m～0.60m in the tank.Tank is made with fiberglass, cell body by the venturi upstream have horizontal bottom even contraction section 9, have even diffuser 10 3 parts that descending grade bottom surface and lateral width venturi section 13 narrow and parallel to each other and downstream have the upstroke slope bottom surface and form; Drive a dovetail groove 14 at contraction section apart from position, marquis road section 2/3rds place, make in plate type intelligent sensor 11 embedded grooves, 11 fens two large divisions of its plate type intelligent sensor, a part is an input part 18, another part is that part 17 is sent in intelligent data processing section 19 and wireless data change; Its input part 18 is that the dot matrix check-out console that the Digital Detecting circuit that designs with the induction type etection theory is formed constitutes, wireless data becomes and to send part 17 by data pointwise retrieval, statistics, is sent by the wireless receiving and dispatching of both-way communication and touches the electric appliance component that piece carries out signal transmitting and form.These plate type intelligent sensor 11 inside chip skeletons are made with epoxy resin board, the front of plate is equipped with 78 MFC7710B detection chip, 1 MFC7720B signal processing chip, 1 block of nRF401 wireless transmission circuit plate and 1 block of feed circuit plate, and the back side of chip is fixed with 600 sampling induction points.The longitudinal frame that induction point detects is 1mm, is made by nickel-chrome.Plate type intelligent sensor 11 adopts plastic casing, the inner casting with epoxy resin forms, chip and shell become an entity after casting, structural housing is made with the plasticity insulating material, at last circuit chip partly being reinstated plastic water proofing property insulating material with internal circuit and structural housing one is cast into solid-state square, lead terminal usefulness has the plug-in type lead terminal of water seal, and this connector need not to do other water-proofing treatment after patching fastening getting well.At first the feed circuit 20 or the external power supply of self-contained battery power supply are connected during use, the excitation power supply design is powered in 9-6 volt scope, by constant voltage circuit excitation power supply being carried out constant voltage handles, communication is taked regularly and the formula of call standby dormancy formula duty, reduce loss in the signal conveys with this, further improve communication stand-by time and teletransmission ability; Then plate type intelligent sensor 11 vertically being installed on tank detects in the dovetail groove 14 at position, when water level changes up and down, the corresponding water surface is near certain sensing unit circuit, this circuit produces the upset of triggering property, output signal becomes " 0 " by " 1 ", output signal becomes " 1 " by " 0 " when the material face leaves certain sensing unit, guarantees the neural face of several water levels of sensing unit circuit composition with this; And then through microprocessor to each sampling induction point 15 carry out pointwise retrieval, statistics, numeral become give, wireless telecommunications, thereby realize sampling, handle, become and send, the flow detection of total digitalization.
Embodiment 2: the slot type flow detection intelligence sensor that designs for Sewage Plant.The design maximum flow is at the flow tank of 4000L/S, and fluid level changes between 0.08m～0.80m in the tank.Tank is made with the glass fibre unsaturated polyester composite, the sensor construction shell is made with the plasticity insulating material, partly reinstating plastic water proofing property insulating material with internal circuit and structural housing one is cast into board-like sensor with circuit chip at last, and the front of plate is equipped with 100 MFC7710B detection chip, 1 MFC7720B signal processing chip, 1 block of nRF401 wireless transmission circuit plate and 1 block of feed circuit plate.The back side of chip is fixed with 800 sampling induction points, and other is with embodiment 1.
Embodiment 3: the slot type flow detection intelligence sensor that designs for the irrigated area.The design maximum flow is at the flow tank of 93040L/S, and fluid level changes between 0.09m～1.83m in the tank.Tank is the basic law design Bashel groove according to channel flow mechanics bernoulli principle, builds up with cement.This plate type intelligent sensor is built at the tank contraction section and is surveyed wall.Sensor internal chip skeleton is made with epoxy resin board.The front of plate is equipped with 240 MFC7710B detection chip, 1 MFC7720B signal processing chip, 1 block of nRF401 wireless transmission circuit plate and 1 block of feed circuit plate.The back side of chip is fixed with 1900 sampling induction points.The longitudinal frame that induction point detects is 1mm, is made by nickel-chrome.The central lines of the center line of tank and channel during installation makes current enter the Bashel groove and bias current do not occur.The upstream of Bashel groove should have greater than 5 times of flat segments that channel is wide, makes current can steadily enter the Bashel groove.Promptly there is not left and right sides bias current, the impulse force that does not also have the channel gradient to form, other is with embodiment 1.
Embodiment 4: the slot type flow detection intelligence sensor that designs for Environmental Protection Agency.The design maximum flow is at the flow tank of 5.4L/S, and fluid level changes between 0.015m～0.21m in the tank.Tank is made with fiberglass.This plate type intelligent sensor internal chip skeleton is made with epoxy resin board.The front of plate is equipped with 4 MFC7710B detection chip, 1 MFC7720B signal processing chip, 1 block of nRF401 wireless transmission circuit plate and 1 block of feed circuit plate.The back side of chip is fixed with 30 sampling induction points.The longitudinal frame that induction point detects is 1mm, is made by nickel-chrome, and other is with embodiment 1.
Claims (2)
1, a kind of cell body discharge of sewage detects the preparation of plate type intelligent device, it is characterized in that:
The design of I, channel flow measuring tank and preparation
A, design a kind of specific current cell body (Bashel groove) according to basic law of fluid mechanics, make flow and width of the channel, flow velocity, time become a fixing funtcional relationship, variable has only water level
B, mathematical model are: the Bashel groove of square-section is observed following formula:
In the formula, C
vFor depending on the efflux coefficient of approaching velocity, C
eFor depending on the coefficient of flow that is rubbed with vortes interference, b is the width of water flow grooves, and h is a water level, b, C in specific current cell body
v, C
eBe constant,, can calculate flow as long as record water level
The preparation of II, plate type intelligent sensor is divided into two parts to be carried out, and a part is the preparation of circuit chip, and another part is the preparation of structural housing
A, the preparation of circuit chip part, at first select for use dielectric panel to make support frame, become the support plate that send part as dot matrix sampling induction point and wireless data, support frame is made with epoxy resin board or other dielectric panel, then fix some dot matrix sampling induction points to water level detecting in the front of support plate, dot matrix sampling induction point is made by non-magnetic corrosion resistant conductor material, vertically sampling induction point resolution is 1 millimeter, the back side of support plate is fixed with some sensor chip circuit boards, other testing circuit and data retrieval, statistics, the circuit block that change is sent is realized the detection of digitized signal according to the interspersed back side that is fixed on support plate of mounting condition with this circuit board, become and send function;
B, structural housing are made with the plasticity insulating material, at last the circuit chip part are reinstated plastic water proofing property insulating material with internal circuit and structural housing one and are cast into solid-state square, circular, board-like or bar type sensor;
C, lead terminal plug-in type lead terminal, this connector need not to do other water-proofing treatment after patching fastening getting well;
III, the plate type intelligent sensor is embedded in the dovetail groove of opening on the contraction section sidewall of the prepared channel flow measuring tank of I.
2, detect the preparation of plate type intelligent device according to the described a kind of cell body discharge of sewage of claim 1, it is characterized in that: described support frame is made with epoxy resin board, the sampling induction point is made by non-magnetic, corrosion resistant, conductor material, and shell forms with plastic insulating material casting; Lead terminal is to make with insulating material or multicore electrical connector with anti-water totally enclosed ability; The circuit chip part becomes a solid-state entity with structural housing after casting, the overall dimensions of plate type intelligent sensor are according to the channel flow measuring tank design of different size.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104392111A (en) * | 2014-11-10 | 2015-03-04 | 连承锴 | Flood forecasting method based on water level sample |
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| CN102809404A (en) * | 2012-07-23 | 2012-12-05 | 太原理工大学 | Preparation method of digital debris flow sensor |
| CN114790721A (en) * | 2022-03-14 | 2022-07-26 | 兰州理工大学 | Water measuring weir with super-discharge capacity and arrangement method |
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Non-Patent Citations (4)
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| 一种新型数字污水计量方法研究. 马福昌，齐伟，马珺.科技情报开发与经济，第17卷第2期. 2007 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104392111A (en) * | 2014-11-10 | 2015-03-04 | 连承锴 | Flood forecasting method based on water level sample |
| CN104392111B (en) * | 2014-11-10 | 2017-08-11 | 连承锴 | Flood Forecasting Method based on water level sample |
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