CN2058248U - Pollation source water quality and quantity monitoring and measuring set - Google Patents

Abstract

The utility model discloses an environmental protection monitoring device and comprises a micro processing apparatus, a storing apparatus, a connecting port circuit, a keyboard, a displaying circuit, an analogue-digital conversion circuit and a serial communication connecting port circuit. The position controlling signal output by the micro processing apparatus starts a sampling device and causes the work process of the timing or quantifying sampling to be completed. The analog signals collected such as the water temperature, the flow amount and the PH value through the analogue-digital conversion are sent to the micro processing apparatus under the control of the monitoring program and then the data processing is carried out. The environmental protection monitoring device alters the lagging situations of poor precision and unscientific data processing of the sampling with single instrument in manual operation and achieves the automatic wastewater monitoring and sampling.

Description

Pollation source water quality and quantity monitoring and measuring set

The utility model relates to the monitoring device of environmental protection, the monitoring equipment of specifically a kind of water quality, the water yield.

For carrying out the total amount of pollutant control of pollution entering the water, water quality, the water testing means of science must be arranged, exactly blowdown load in hand.Monitored for pollution entering the water in the past, usually adopt artificial instantaneous sampling, the timing of single instrument or quantitative sampling and separate unit instrument that the discharge of sewage is monitored, handle by manually carrying out aggregation of data then, the shortcoming that this monitoring method is brought is: not accurate enough, the science of the reported data of blowdown load, can not be promptly and accurately, the emission status that reflects the sewage draining exit pollutant all sidedly makes relevant department carry out overall control to pollution source, carries out the pollutant discharging license system and has brought very big difficulty.

The purpose of this utility model provide a kind of can be in the isoparametric while of continuous monitoring discharge of sewage pH value, the control sampling apparatus carries out regularly or the representative water sample of quantitative collection, data processing science, sewage monitoring device timely.

Technical essential of the present utility model is:

It is made up of microprocessor, storer, interface circuit, driving circuit, keyboard and display circuit, analog to digital conversion circuit, serial interface circuit.The parallel output terminal carry-out bit control electric signal of microprocessor, the photoelectricity by interface circuit send the action of driving circuit starting sampling apparatus every closing device and logic control device, finishes regularly or the course of work of quantitative sampling.Simulating signals such as the water temperature of gathering, flow, pH value under the watchdog routine control in ROM (read-only memory), send microprocessor to carry out data processing through analog to digital conversion circuit.Be stored in the random access memory by certain record format then, and can under the control of host computer, carry out course of work control and data communication through serial interface circuit.Keyboard and display circuit can be realized man-machine conversation.

Native system is finished owing to having adopted one-chip computer to dispose corresponding accessory, in the continuous monitoring discharge of sewage, in the time of pH value, water temperature, has realized the robotization to automatic control of sewage sampling and data processing.Changed in the past by artificial or the single instrument of manually-operated, device sampling poor accuracy, the unscientific backward situation of data processing.Sewage monitoring and sampling robotization have been accomplished.It is simple in structure, and is easy to use, and the reliability height has promotional value.

Fig. 1 is a block scheme of the present utility model.

Fig. 2 is gas circuit of the present utility model and control synoptic diagram.

Fig. 3 is microprocessor of the present utility model and relevant portion circuit theory diagrams.

Fig. 4 is keyboard of the present utility model and display circuit schematic diagram.

Fig. 5 is interface of the present utility model and driving circuit schematic diagram.

Fig. 6 is power circuit principle figure of the present utility model.

Fig. 7 is one of watchdog routine block diagram of the present utility model.

Fig. 8 is two of a watchdog routine block diagram of the present utility model.

Fig. 9 is three of the utility model watchdog routine block diagram.

Analog to digital converter of the present utility model (A/D) U ₈Input end IN ₀, IN ₁, IN ₂(see figure 3) links to each other with pH value transmitter, flow Q transmitter, the water temperature C transmitter output terminal used always respectively.Microprocessor U ₁The ROM (read-only memory) U of watchdog routine is deposited in configuration ₄With static RAM U ₅, U ₄And U ₅The addressing port by with little processing and the code translator U that links to each other ₂Provide, the control program of system and data processor all are solidificated in ROM (read-only memory) U ₄In.With microprocessor U ₁The die for special purpose number converter U that links to each other ₈, be by microprocessor U ₁The address that provides is through code translator U ₂, U ₆Export U to ₈Port is chosen, and it starts switching signal and reads in signal respectively by microprocessor U ₁Write signal WR and read signal RD end through rejection gate U ₁₂With phase inverter U ₁₃Provide, the selection of its input signal is by microprocessor U ₁Data bus D ₀-D ₂Coding different controls.Analog to digital converter (circuit) U ₈Clock signal be with U ₁Ale signal through decade counter U ₇Two divided-frequency supply with.Microprocessor U ₁Regularly (1 second) is from U ₈In read the digital quantity of pH value, flow, water temperature, through U ₁Carry out being stored in random access memory U by certain record format after the data processing ₅In.

The sampling apparatus (see figure 2) comprises reciprocating pump, two-position three way magnetic valve, seal cup, suction hose, electromagnetism pinched valve, stepper motor, rotating mechanism and sampling bottle, and its sequentially-operating is at microprocessor U ₁Under the control of interface circuit and driving circuit, finish.When the aggregate-value of flow or time equates with set-point, U ₁Parallel output terminal P _1.7Send low level signal, through phase inverter U ₉After anti-phase, by photoelectric coupled device U ₂₆(see figure 5) makes transistor BG then ₁₀Conducting, output enters logic control device U ₂₇4 pin of input end, the high level that its output terminal 5,7 produces makes relay J ₁, J ₃Action, control vacuum pump BN starts and a notes bottle solenoid valve JF keeps closing, and pressurized air is discharged by suction hose, with the detergent line foreign material, after 14 seconds, logic control device U ₂₇Output terminal 6 uprises level, through relay J ₂Open two-position three way magnetic valve FA, make the gas circuit commutation, water sample is entered in the seal cup MF by suction hose CS, when water sample was full of seal cup MF, the liquid level sensor YC in the cup sent a switching value signal, send logic control device U ₂₇9 pin, its 6 pin state is changed, cause two-position three way magnetic valve FA commutation, get rid of unnecessary water sample, when water sample reaches in advance setting value, microprocessor U ₁P1,7 ends send high level signal through U ₉After anti-phase, send photoelectric coupled device U ₂₆, make transistor BG ₁₀End, cause logic control device U ₂₇7 pin be high level, relay J ₃Adhesive is opened electromagnetism pinched valve JF and is finished the action of notes bottle.After finishing the sampling period, microprocessor U ₁The P1.0 port send pulse signal through U ₉After anti-phase, send photoelectric coupled device U ₂₅Make transistor BG ₉Instantaneous conducting is by relay J ₄Control step motor BD action is shifted liquid distribution pipe P on next bottle number, after 24 bottles have been adopted, by U onto ₁The P1.0 mouth send level signal, make logic control device U ₂₇Generation stops the signal of sampling work.AN among Fig. 5 ₂For manually changing a bottle pushbutton switch, press once to finish and once change the bottle action.

System should be according to field condition before operation, and sample mode to be selected, timing or quantitative spacing value and the date of putting into operation, time value deposit random access memory U in by keyboard ₅In.Its method is a (see figure 6) energized K switch ₁, K ₂, complete machine powering is by reset key AN ₁(see figure 3), display BG ₁Display reminding symbol A(sees Fig. 4), system is in waiting status, press numerical key, LD key or E key, system is begun to put into operation the date (year, month, day), time (time, minute, second), fix time at interval (3-9999 branch) or quantitative (flow value-9999m of 3 minutes at interval ³), deposit random access memory U in ₅In, wherein the LD key is to deposit key in, the E key is a delete key, only is used to revise the maloperation of numerical key.Press command key RUN, after system puts into operation, display BG ₁-BG ₈Show the flow value of accumulative total, press numerical key 1, display BG ₁-BG ₆The date that shows input; Press numerical key 2, display BG ₁-BG ₆Show current time value; Press numerical key 3, display BG ₁-BG ₈Show current flow speed value; Press numerical key 4, display BG ₁-BG ₅The temperature value that shows current; Press numerical key 5, display BG ₁-BG ₆Show the pH value that detects; Press numerical key 6, display BG ₁-BG ₆The time interval value of Displaying timer; Press numerical key 7, display BG ₁-BG ₄Show quantitative spacing value; Press numerical key 8, display BG ₃-BG ₄The bottle number that shows sampling; Press numerical key 9, display BG ₁-BG ₅The liquid level that shows sewage.

The course of work of keyboard input is that data bus is by latch U ₁₆The signal of output is through U ₂₁-U ₂₄After anti-phase, the keyboard input signal line is made in output.It is by code translator U ₁₅Control, 3 alignments are by U _Cc1Power supply is through resistance R ₁₂-R ₁₄Draw, the output signal line of keyboard is by three-state buffer U ₁₇Cause the D of data bus ₀-D ₂Display BG ₁-BG ₈Be the common cathode LED charactron that adopts the power supply of 5V power supply, U ₁Data bus D ₀-D ₇Through latch U ₁₄And U ₁₉, U ₂₀After anti-phase, drive BG ₁-BG ₈Respective end, U ₂₁-U ₂₄Supply with the big heavy electric current of display, so that carry out the position choosing.U ₁₅Input signal by U ₁Address bus A ₂-A ₆With code translator U ₆Output Y ₂Latch U is provided ₁₆At U ₁₅Control under signal controlled in the position read in U ₁In.

For the assurance system in operational process, power down suddenly and random access memory U ₅Interior data are not lost, and are provided with random access memory power down protection circuit.As power supply V _Cc1During greater than loss protecting voltage E when (3-4.5V), diode D ₁The conducting (see figure 3), diode D ₂End, by V _Cc1Supply with U ₅Operating voltage is worked as momentary power failure, V _Cc1During gradually less than E, D ₂Conducting, D ₁End, power supply E is to U ₅Power supply, and pass through R ₃Guarantee U ₅CE end be high level, thereby reach the purpose that data are not lost.

When the unexpected power down in scene, by stabilivolt D ₁₂, resistance R ₂₃, R ₂₄, R ₂₅And transistor BG ₁₁U Deng the element formation ₁The power-off signal trigger circuit are when pulsating direct current is lower than V _Cc1-0.7V+D ₁₂The voltage stabilizing value time, transistor BG ₁₁Collector output high level signal INT ₀(see figure 6) is through U ₉After anti-phase, send U ₁Produce and carry out U ₄In the order of external interrupt service routine, with U ₁In data deposit U in ₅In.Otherwise, INT ₀Be low level, through U ₉After anti-phase, make U ₁Be in and forbid the external interrupt state.

The watchdog routine of native system adopts modular organization, by U ₁Timing interruption, external interrupt and the serial branch of interrupting determination procedure, the program of a few cover difference in functionalitys organically is combined as a whole, it comprises:

Initialization module: system is carried out initialization.

Show and the keyboard scan processing module: the keyboard value to input is analyzed, handles, is judged, turns to corresponding processing module then.

Clock module: in the process of implementation, constantly the different time sign of inquiry setting turns to the execution corresponding program then.

Data acquisition module: the control A/D converter regularly carries out data acquisition and carries out digital filtering, data processing, and deposits storer in.

Control sampling apparatus operational module: the control sampling apparatus is finished cleanings-suction-measurement-notes bottle-change action such as bottle grade.

External interrupt service routine module: when the outside produces power-off signal, with U ₁The data of interior random access memory are sent into U ₅Carry out power-off protection, when powering on U ₅The data of middle protection send back to U ₁In the internal random storer.

Serial interrupt service routine mould module: when networking, analysis and judgement is carried out in different station numbers and order that host computer is sent, carry out different programs then with host computer.

Microprocessor U among the figure ₁Model be 8031, code translator U ₂Model be 74LS139, latch U ₃Model be 74JS373, U ₁₄, U ₁₆Model be 74LS273, ROM (read-only memory) U ₄Model be 2764, random access memory U ₅Model be 6264, code translator U ₆Model be 74LS139, counter U ₇Model be 74LS90, analog to digital converter U ₈Model be ADC0809, code translator U ₁₅Model be 74LS138, three-state buffer U ₁₇Model be 74LS125, U ₁₈For or the door 74LS32, photoelectric coupled device U ₂₅, U ₂₆Model be TIL113, logic control device U ₂₇Model be GSK-1, integrated package of pressure-stabilizing U ₂₈, U ₂₉Model be 7805, integrated package of pressure-stabilizing U ₃₀Model be 7809, power-supply filter U ₃₁Model be DNX-F.Light-emitting diode display BG ₁-BG ₈Model be DDC502, the model of transistor BG9-11 is 3CG733, the model of BG10 is 3CG23C, R ₁-R ₂₅Be resistance, C ₁-C ₁₃Be electric capacity, B ₁, B ₂Be transformer, BX ₁-BX ₃Be fuse, D ₁-D ₁₈Be diode.Relay J ₁-J ₄Model be JZX-17F, the model of reciprocating pump BN is GZB-1, the model of two-position three way magnetic valve FA is Q23XD, the model of liquid level sensor YC is GEU-1, the model of electromagnetism pinched valve JF is GDF-1, the model GBJ-1 of stepper motor BD.

Claims (5)

1, a kind of pollution source water quality, water quantity monitoring system is characterized in that it is made up of microprocessor, storer, interface circuit, driving circuit, keyboard and display circuit, analog to digital conversion circuit, serial interface circuit; The parallel output terminal carry-out bit control signal of microprocessor, the photoelectricity by interface circuit send the action of driving circuit starting sampling apparatus every closing device and logic controller, finishes regularly or the course of work of quantitative sampling; Simulating signals such as the water temperature of gathering, flow, pH value under the watchdog routine control in ROM (read-only memory), send microprocessor to carry out data processing through analog to digital conversion circuit, and connect certain record format and be stored in the random access memory; Can under the control of host computer, carry out course of work control and data communication through serial interface circuit.

2, according to the described pollution source water quality of claim 1, water quantity monitoring system, it is characterized in that microprocessor U ₁Regularly (1 second) is from analog to digital conversion circuit U ₈In read the digital quantity of pH value, flow Q, water temperature C, through U ₁After carrying out data processing, be stored in random access memory U by certain record format ₅In.

3, according to the described pollution source water quality of claim 1, water quantity monitoring system, it is characterized in that sampling apparatus comprises reciprocating pump, two-position three way magnetic valve, seal cup, suction hose, electromagnetism pinched valve, stepper motor, rotating mechanism and sampling bottle, its sequentially-operating is at microprocessor U ₁Under the control of interface circuit and driving circuit, finish.

4, according to the described pollution source water quality of claim 1, water quantity monitoring system, it is characterized in that being provided with random access memory U ₅The power down protection circuit when power supply during greater than loss protecting voltage E, by power supply VCC1, is supplied with U ₅Operating voltage; If momentary power failure, power supply E is to U ₅Power supply.

5,, it is characterized in that the watchdog routine in the ROM (read-only memory) adopts modular organization, by microprocessor U according to the described pollution source water quality of claim 1, water quantity monitoring system ₁Timing interruption, external interrupt and the serial branch of interrupting determination procedure.

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