CN1760659A - Full automatic method for measuring density index of SDI sludge, and tester - Google Patents
Full automatic method for measuring density index of SDI sludge, and tester Download PDFInfo
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- CN1760659A CN1760659A CN 200410072314 CN200410072314A CN1760659A CN 1760659 A CN1760659 A CN 1760659A CN 200410072314 CN200410072314 CN 200410072314 CN 200410072314 A CN200410072314 A CN 200410072314A CN 1760659 A CN1760659 A CN 1760659A
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Abstract
The tester is suitable to measuring SDI of medium water. Workflow of the tester is as following: being passed through 0.45mu m micro filter membrane, the filtered raw water is fed to electromagnetic flow transmitter (containing electromagnetic flow sensor). 200 pieces of electric impulses are output when each liter of water passes through the flow transmitter. Signal of electric impulse or 4-20mA signals in analog at output end of flow transmitter is fed to single chip to calculate out SDI, which is displayed on display. Characters of the tester are that output of the filter membrane is connected to the flow transmitter, and output of the flow transmitter is connected to single chip; man-machine interface of single chip is connected to keyboard, and data output port is connected to display and watchdog circuit. Advantages are: saving labor and saving time to accomplish measurement for SDI.
Description
Technical field
The present invention relates to sludge density index (SDI) (SDI-Silt Density Index) mensuration and instrument thereof, do not relate to full automatic method for measuring density index of SDI sludge and tester thereof, the measurement of water SDI in mainly being applicable to.
Background technology
Water strengthens its cyclic utilization rate as the natural resources of unique reusable edible, applies resurgent water, has been a major issue of current society, and therefore, the SDI tester will be used widely.The SDI sludge density index (SDI) tester that present water treatment field uses is the manual mode measuring instrument, exist to use inconvenient, need manually frequently to measure, record data, artificial computational data, data are really smart, not only time-consuming, but also effort, this embodies very obviously in sewage disposal system.
Summary of the invention
The objective of the invention is at the above-mentioned shortcoming that exists in the prior art, a kind of complete moving SDI sludge density index (SDI) mensuration and tester thereof are provided.
Technical scheme of the present invention is that former water is regulated feed pressure through ball valve and pressure-regulating valve is 30psi, through 0.45 μ m micro-filtrate membrane filtration, flow into electromagnetic flow transmitter (including electromagnetic flow sensor), and be per 200 pulse/premium on currency by four photosensitive operating key strobe pulse equivalents on its dial plate, at this moment promptly, whenever flow through 200 electric pulses of 1 liter of former water output of electromagnetic flow transmitter, 4-20mA analog signals on its electric impulse signal or its electromagnetic flow transmitter output terminal is sent into single-chip microcomputer, single-chip microcomputer was gathered the pulsatile once signal every 5 minutes, 15 minutes circulation primary, record is under the 30psi feed pressure, 0.45 the μ m micro-filtrate membrane filtration 500ml needed time of former water, and deposit ram in slice in, and calculate SDI, send into display and show; Its SDI tester comprises ball valve, pressure-regulating valve, tensimeter, vent valve, 0.45 μ m microfiltration membranes, it is characterized in that: also comprise electromagnetic flow transmitter (including electromagnetic flow sensor), the microcomputer single-chip microcomputer that connects its electromagnetic flow transmitter electric pulse output terminal, the keyboard that connects its single-chip microcomputer man-machine conversation mouth that is communicated with its filtering membrane outlet, the display and " watchdog circuit-WATCHDOG " that be connected the single-chip microcomputer mouth that connects its single-chip data delivery outlet.
Under identical 30psi feed pressure, with a certain amount of needed time of former water of 0.45 μ m micro-filtrate membrane filtration be different, the time that promptly sends 200 pulses is long more, SDI is high more; Otherwise SDI is low more.
The invention has the beneficial effects as follows can be for water treatment field provides full-automatic SDI index measurement method and tester thereof, and the SDI that can time saving and energy savingly finish sewage measures, to promote the extensive utilization of resurgent water, conserve water resource.
Description of drawings
Fig. 1 is theory diagram of the present invention and Figure of abstract;
Fig. 2 is U5 among Fig. 1 " house dog " IMP831L circuit connection diagram;
Fig. 3 is the circuit connection diagram of U2 single-chip microcomputer 89C52, U3 keyboard and U4 display among Fig. 1;
Fig. 4 is a main program flow chart of the present invention.
Embodiment
With reference to Fig. 1 concrete structure of tester of the present invention as can be known, comprise ball valve, pressure-regulating valve, tensimeter, vent valve, 0.45 μ m microfiltration membranes, it is characterized in that: also comprise electromagnetic flow transmitter (the including electromagnetic flow sensor) U1 that is communicated with its filtering membrane outlet, by resistance R 1 be connected with R2 its electromagnetic flow transmitter electric pulse output terminal microcomputer single-chip microcomputer U2, connect its single-chip microcomputer man-machine conversation mouth keyboard U3, connect the display U4 and " watchdog circuit-WATCHDOG " U5 that is connected the single-chip microcomputer mouth of its single-chip data delivery outlet P1.
U1 can select the 7ME5033 type electromagnetic flow transmitter (built-in electromagnetic flow sensor) of SIEMENS company for use.
U2 can select the MCS-51 of atmel corp series monolithic 89C52 for use.
U3 can select and turn over button/DOWN, turn over button/UP and start button/START three button keyboards for use.
U4 can select 128 * 64 liquid crystal dot matrix module display screen displays of OCMJ company for use.
U5 can select the IMP831L watchdog circuit for use.
With reference to Fig. 2 and Fig. 3 as can be known U2 mouth P2.7 (A15) 25 pin be connected and turn over button/DOWN, P2.6 (A14) 24 pin connect liquid crystal display and turn over button/UP, are connected start button/START with P2.5 (A13) 23 pin.
U2 mouth PO.7, input port/INT1, reset/RST is connected watchdog circuit LMP813L with ground/GND.U2 mouth P1.5 pin 1, P1.6 pin 2, P1.7 pin 3, P1.4 pin 44, P1.3 pin 43, P1.2 pin 42, P1.1 pin 41, P1.0 pin 40, P2.2, P2.1, P2.0 are connected U4 with P2.3O.
The electric impulse signal uo=12V of above-mentioned electromagnetic flow transmitter output terminal is 5V through 12K resistance R 1 and R2 dividing potential drop, receives on the input/INT1 pin of 89C52 single-chip microcomputer.
U2VCC power supply 38 pin and EANPP/29 pin connect+5V.
Keyboard is system's control knob, and with being connected as mentioned above of single card microcomputer mouth, start button/START, liquid crystal display are turned over and turned over button/DOWN under button/UP and the liquid crystal display page or leaf and connect+5V (Fig. 3) by 3 1K pull-up resistor R10, R17 and R18 respectively.When button was not all pressed, P2.5, P2.6, P2.7 were high level; After any one button was pressed, corresponding single-chip microcomputer mouth was a low level.
The manual reset of watchdog circuit IMP831L/MR mouth pin 1 connects a hand-reset button and connects house dog output/WD (WATCHDOG) O pin 8 by a diode D1, power supply/VCC pin 2 connects+5V, ground/GND of ground/GND pin 3 ground connection and 89C52, output/PFO pin 5 connects input/INT pin 1 of 89C52, house dog input/WDI pin 6 connects output/PO.7 pin of 89C52, reset/the RESET pin connects the RST pin of 89C52.
Watchdog circuit is one to be independent of the monostable parts outside the U2, and available monostable circuit or the counter that carries impulse source constitute.Just export a pulse during U2 operate as normal at set intervals, to temporary stable state, when the duration of temporary stable state was designed longlyer than the triggered time of U2, stable state just can not be got back to by the monostable system with monostable system triggers.The signal of exporting when utilizing it to return stable state just can make U2 withdraw from endless loop as reset signal.
Do not detect the WDI signal that U2 sends here in 1.6S, the IMP831 timer internal will make house dog output/WDO pin be in low level state.This pin can make RESET output high level by the MR pin, and the single-chip microcomputer that resets.
If WDI is unsettled or be connected to a three state circuit, the function of house dog then is under an embargo, if promptly by clear 0 and WDI is unsettled or be connected to a three state circuit, the function of house dog then is under an embargo, promptly by clear 0 and do not count.If generation reset signal, WatchDog Timer also can be under an embargo.When invalid and WDI input detects the high level that is as short as 50ns or low transition when reset signal, WatchDog Timer will begin the counting of 1.6s.Reset WatchDog Timer and start the once new count cycle of the saltus step meeting of WDI end.
128 * 64 liquid crystal dot matrix module display screens of OCMJ company can directly link to each other with eight bit microprocessors, can directly carry out row, column and drive.So not only can display digit information (can show 30 groups of 90 data, divide 30 pages of demonstrations), and can Chinese display information, friendly interface has strengthened interactive function.
1,2,3 pin of its module display screen connect+5V and power supply ground, 4,5,6 pin meet P20, P21 and the P22 of U2 respectively, 7,8,9,10 and 11 pin connect 44,43,42,41 and 40 pin of U2 respectively, 12,13 and 14 pin meet 1,2 and 3 of U2 respectively, 15 pin meet the P23 of CPU, 16 pin are unsettled, and 17 and 18 pin meet a 10K variable resistor R3.
Main program flow of the present invention: open the device power supply (DPS) switch, monolithic system is at first carried out initialization, initialization is finished, system all normal after, enter the waiting status of preliminary work, if all external conditions all are ready to, start the start key, system begins flow is added up, be added to 500 milliliters after, write down the used time, after 15 minutes, record is added to 500 milliliters of required times once more, draws the SDI value by system-computed then, delivering to liquid crystal display shows, can then get back to the flow process leading portion as not inquiring about this moment by the numerical value of storage before key is inquired about up and down, waits for new beginning once.
Claims (7)
1, full automatic method for measuring density index of SDI sludge and tester thereof, is 30psi with former water through ball valve and pressure-regulating valve adjusting feed pressure, through 0.45 μ m micro-filtrate membrane filtration, flow into electromagnetic flow transmitter (including electromagnetic flow sensor), and be every formula flow sensor) by four photosensitive operating key strobe pulse equivalents on its dial plate, and be per 200 pulse/premium on currency by four photosensitive operating key strobe pulse equivalents on its dial plate, at this moment promptly, whenever flow through 1 liter of former water of electromagnetic flow transmitter and just export 200 electric pulses, 4-20mA analog signals on its electric impulse signal or its electromagnetic flow transmitter output terminal, send into single-chip microcomputer, every 5 minutes, single-chip microcomputer is gathered the pulsatile once signal, 15 minutes circulation primary, and record is under the 30psi feed pressure, 0.45 the μ m micro-filtrate membrane filtration 500ml needed time of former water, and deposit ram in slice in, and calculate SDI, send into display and show; Its SDI tester comprises ball valve, pressure-regulating valve, tensimeter, vent valve, 0.45 μ m microfiltration membranes, it is characterized in that: also comprise electromagnetic flow transmitter (including electromagnetic flow sensor), the microcomputer single-chip microcomputer that connects its electromagnetic flow transmitter electric pulse output terminal, the keyboard that connects its single-chip microcomputer man-machine conversation mouth that is communicated with its filtering membrane outlet, the display and " watchdog circuit-WATCHDOG " that be connected the single-chip microcomputer mouth that connects its single-chip data delivery outlet.
2, full automatic method for measuring density index of SDI sludge according to claim 1 and tester thereof is characterized in that: the 7ME5033 type electromagnetic flow transmitter (built-in electromagnetic flow sensor) that its electromagnetic flow transmitter U1 can select for use SIEMENS company to produce.
3, full automatic method for measuring density index of SDI sludge according to claim 1 and tester thereof is characterized in that: the MCS-51 series monolithic 89C52 that its single-chip microcomputer U2 can select for use atmel corp to produce.
4, full automatic method for measuring density index of SDI sludge according to claim 1 and tester thereof, it is characterized in that: its keyboard U3 turns under button/UP and the liquid crystal display page or leaf on start button/START, the liquid crystal display page or leaf to turn over button/DOWN, its lead-in wire connects P2.5, P2.6, P2.7/25,24 and 23 pin of CPU89C52 respectively, also connects+5V by 3 1K pull-up resistor R10, R17 and R18 respectively.
5, full automatic method for measuring density index of SDI sludge according to claim 1 and tester thereof, it is characterized in that: its " watchdog circuit " U4 can select the IMP831L integrated circuit for use, its manual reset/MR pin 1 connects a hand-reset button and connects house dog output/WD (WATCHDOG) O pin 8 by a diode D1, power supply/VCC pin 2 connects+5V, ground/GND pin 3 ground connection, meet ground/GND of 89C52CPU, output/PFO pin 5 connects input/INT pin 1 of U2, house dog input/WDI pin 6 connects output/PO.7 pin of U2, reset/the RESET pin connects the RST pin of CPU.
6, full automatic method for measuring density index of SDI sludge according to claim 1 and tester thereof, it is characterized in that: 128 * 64 liquid crystal dot matrix module display screens that its display U5 can select for use OCMJ company to produce, 1,2,3 pin of its module display screen connect+5V and power supply ground, 4,5,6 pin meet P20, P21 and the P22 of U2 respectively, 7,8,9,10 and 11 pin connect 44,43,42,41 and 40 pin of U2 respectively, 12,13 and 14 pin meet 1,2 and 3 of U2 respectively, 15 pin meet the P23 of U2,16 pin are unsettled, and 17 and 18 pin meet a 10K variable resistor R3.
7, full automatic method for measuring density index of SDI sludge according to claim 1 and tester thereof, it is characterized in that: its main program flow: open the device power supply (DPS) switch, monolithic system is at first carried out initialization and is finished, system all normal after, enter the waiting status of preliminary work, if all external conditions all are ready to, start the start key, system begins flow is added up, after being added to 500 milliliters, write down the used time, after 15 minutes, record is added to 500 milliliters of required times once more, draws the SDI value by system-computed then, delivering to liquid crystal display shows, can then get back to the flow process leading portion as not inquiring about this moment by the numerical value of storage before key is inquired about up and down, waits for new beginning once.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100723149A CN100507508C (en) | 2004-10-11 | 2004-10-11 | Full automatic method for measuring density index of SDI sludge, and tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100723149A CN100507508C (en) | 2004-10-11 | 2004-10-11 | Full automatic method for measuring density index of SDI sludge, and tester |
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| Publication Number | Publication Date |
|---|---|
| CN1760659A true CN1760659A (en) | 2006-04-19 |
| CN100507508C CN100507508C (en) | 2009-07-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100723149A Expired - Fee Related CN100507508C (en) | 2004-10-11 | 2004-10-11 | Full automatic method for measuring density index of SDI sludge, and tester |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101259380B (en) * | 2007-03-06 | 2010-08-25 | 中芯国际集成电路制造(上海)有限公司 | Testing device for measuring SDI15 value and testing method thereof |
| CN101943652A (en) * | 2010-08-16 | 2011-01-12 | 安徽省建设工程勘察设计院 | Intelligent sludge detecting instrument |
| CN101632017B (en) * | 2006-11-14 | 2011-12-07 | 环境管理公团 | Apparatus for sensing precipitation density of sludge in waste water treatment tank and method therefor |
| CN106093331A (en) * | 2016-07-01 | 2016-11-09 | 天津市职业大学 | Feed water by reverse osmosis SDI automatic testing equipment and control method |
-
2004
- 2004-10-11 CN CNB2004100723149A patent/CN100507508C/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101632017B (en) * | 2006-11-14 | 2011-12-07 | 环境管理公团 | Apparatus for sensing precipitation density of sludge in waste water treatment tank and method therefor |
| CN101259380B (en) * | 2007-03-06 | 2010-08-25 | 中芯国际集成电路制造(上海)有限公司 | Testing device for measuring SDI15 value and testing method thereof |
| CN101943652A (en) * | 2010-08-16 | 2011-01-12 | 安徽省建设工程勘察设计院 | Intelligent sludge detecting instrument |
| CN106093331A (en) * | 2016-07-01 | 2016-11-09 | 天津市职业大学 | Feed water by reverse osmosis SDI automatic testing equipment and control method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100507508C (en) | 2009-07-01 |
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Denomination of invention: Full automatic method for measuring density index of SDI sludge, and tester Effective date of registration: 20120118 Granted publication date: 20090701 Pledgee: Tianjin TEDA Small Enterprise Credit Guarantee Center Pledgor: Tianjin Taida New Water Sources Science & Technology Development Co., Ltd. Registration number: 2012990000030 |
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Granted publication date: 20090701 Termination date: 20201011 |