CN208833789U - Monitoring water quality on line equipment based on programmable controller - Google Patents
Monitoring water quality on line equipment based on programmable controller Download PDFInfo
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- CN208833789U CN208833789U CN201821516300.5U CN201821516300U CN208833789U CN 208833789 U CN208833789 U CN 208833789U CN 201821516300 U CN201821516300 U CN 201821516300U CN 208833789 U CN208833789 U CN 208833789U
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Abstract
The utility model is specifically related to a kind of monitoring water quality on line equipment based on programmable controller, belongs to water quality monitoring apparatus field；The equipment includes control system, peristaltic pump, stepper motor driver, meter, multiposition valve, two-position three-way valve, the first high pressure valve, digestion pool, the second high pressure valve, fan, shut-off valve, control pump, overflow cup, the first reagent bottle, the second reagent bottle, standard sample bottle, third reagent bottle and distilled water bottle.
Description
Technical field
The utility model belongs to water quality monitoring apparatus field, and in particular to a kind of water quality based on programmable controller is online
Monitoring device.
Background technique
Water quality monitoring is type, the concentration and variation tendency of each pollutant of pollutant in monitoring and measurement water body, comments
The process of valence water quality condition.Monitoring range is very extensive, including is not contaminated and contaminated natural water (river, river, lake, sea
And underground water) and various industrial water drainages etc..Monitoring water quality on line equipment in the utility model is mainly using light splitting
Photometry carries out real-time monitoring to COD, ammonia nitrogen, total nitrogen, total phosphorus and the heavy metal element in water, and principle is by water
Then sample and two or three kinds of reagent are adopted using the light of certain wavelength according to langbobier law according to certain process hybrid reaction
With COD, ammonia nitrogen, total nitrogen, total phosphorus and the heavy metal element in water by Spectrophotometry.
Monitoring water quality on line equipment include sampling unit, metering units, reactor unit, detection unit, data acquisition with
Control unit etc., the control system of monitoring water quality on line equipment mostly uses one chip microcomputer (single-chip microcontroller) technology at present, this
The shortcomings that kind technology is that master board is influenced by factors such as mask-making technology, layout structure, device qualities, so as to cause with monolithic
The poor anti jamming capability of the control system of the monitoring water quality on line equipment of machine exploitation, high failure rate.
Summary of the invention
For the above technical problems, the utility model provides a kind of water quality based on programmable controller and supervises online
Measurement equipment, comprising: control system, peristaltic pump, stepper motor driver, meter, multiposition valve, two-position three-way valve, the first high pressure
Valve, digestion pool, the second high pressure valve, fan, shut-off valve, control pump, overflow cup, the first reagent bottle, the second reagent bottle, standard sample
Bottle, third reagent bottle and distilled water bottle；
One end of the peristaltic pump is connected to outside air；
The stepper motor driver connects and controls the progress motor of peristaltic pump；
The meter includes gauge line, upper liquid level sensor, lower liquid level sensor；One end of the meter with it is described
The other end of peristaltic pump connects, and the other end of meter is connect with the centre bore of the multiposition valve；
The multiposition valve includes centre bore, multiposition valve port K1-K8 and multidigit valve relay J1-J8；
The centre bore is connect with multiposition valve port K1-K8 respectively；
The multidigit valve relay J1-J8 is respectively corresponded and is controlled the multiposition valve port K1-K8 opening and closing；
The multiposition valve port K2 is connect with the second reagent bottle；
The multiposition valve port K4 is connect with the first reagent bottle；
The multiposition valve port K5 is connect with distilled water bottle；
The multiposition valve port K6 is connect with third reagent bottle；
The multiposition valve port K8 is connect with standard sample bottle；
The distilled water bottle is for accommodating distilled water；
The standard sample bottle is used to accommodate the standard sample of requirement of experiment；
First reagent bottle is used to accommodate the first reagent of requirement of experiment；Second reagent bottle is wanted for accommodating experiment
The second reagent asked；The third reagent bottle is used to accommodate the third reagent of requirement of experiment；
The input terminal of the two-position three-way valve is connect with the multiposition valve port K3, and the first output end connects waste liquid barrel,
Second output terminal connects wastewater barrel；
The both ends of first high pressure valve are connect with the multiposition valve port K1 and digestion pool respectively；
The digestion pool includes that quartz digestion room, light source, photoelectric converter, heater strip, heating relay and temperature pass
Sensor；
The light source and photoelectric converter are mounted on the two sides of quartz digestion room relatively respectively；
The both ends of second high pressure valve are connect with the digestion pool and outside air respectively；
The fan is mounted near digestion pool, for cooling down for digestion pool；
Connecting tube is inserted into the upper end of the overflow cup, and the other end of connecting tube is connect with multiposition valve port K7；The overflow
The top of cup is connect with drain pipe, and lower end is connect with shut-off valve；
It is described control pump both ends respectively with shut-off valve and water sample.
The control system includes programmable controller, thermal module matched with the programmable controller, expansible
Digital output module and touch screen；Wherein, the programmable controller is connect with thermal module and touch screen respectively；The temperature
Degree module is connect with expansible digital output module.
The pulse for the stepper motor driver that first output end Q0.0 of the programmable controller is connected to peristaltic pump is defeated
Enter end；
The direction that the second output terminal Q0.1 of the programmable controller is connected to the stepper motor driver of peristaltic pump is defeated
Enter end；
The third output end Q0.2 of the programmable controller be connected to the stepper motor driver of peristaltic pump enable it is defeated
Enter end；
4th output end Q0.3 of the programmable controller is connected to the multidigit valve relay J1；
5th output end Q0.4 of the programmable controller is connected to the multidigit valve relay J2；
6th output end Q0.5 of the programmable controller is connected to the multidigit valve relay J3；
7th output end Q0.6 of the programmable controller is connected to the multidigit valve relay J4；
8th output end Q0.7 of the programmable controller is connected to the multidigit valve relay J5；
9th output end Q1.0 of the programmable controller is connected to the multidigit valve relay J6；
11st output end Q1.1 of the programmable controller is connected to the multidigit valve relay J7；
12nd output end Q1.2 of the programmable controller is connected to the multidigit valve relay J8；
13rd output end Q1.3 of the programmable controller is connected to the control heating relay；
First output point KQ0.0 of the expansible digital output module is connected to the fan；
Second output point KQ0.1 of the expansible digital output module is connected to the two-position three-way valve；
The third output point KQ0.2 of the expansible digital output module is connected to first high pressure valve；
4th output point KQ0.3 of the expansible digital output module is connected to second high pressure valve；
5th output point KQ0.4 of the expansible digital output module is connected to relay and the control of the shut-off valve
Make the relay of pump；
6th output point KQ0.5 of the expansible digital output module is connected to the light source；
The upper liquid level sensor is connected to the digital quantity input terminal I0.4 of the programmable controller；
The lower liquid level sensor is connected to the digital quantity input terminal I0.5 of the programmable controller；
The temperature sensor is respectively connected to the input terminal A+ and input terminal A- of the thermal module；
The photoelectric converter connection analog input end V+ and input terminal M to programmable controller.
The utility model has the beneficial effects that
The monitoring water quality on line equipment based on programmable controller that the utility model proposes a kind of is based on programmable controller
Monitoring water quality on line equipment performance stablize, environment resistant electromagnetic interference capability is strong, using modularized design, is easy to on-site maintenance.
The utility model is designed reasonably, it is easy to accomplish, there is good practical value.
Detailed description of the invention
Fig. 1 and Fig. 2 is the monitoring water quality on line based on programmable controller described in specific embodiment of the present invention
The structural schematic diagram of equipment.
In figure: 1, programmable controller；2, thermal module；3, expansible digital output module；4, touch screen；5, it wriggles
Pump；6, stepper motor driver；7, meter；8, gauge line；9, upper liquid level sensor；10, lower liquid level sensor；11, multidigit
Valve；12, two-position three-way valve；13, the first high pressure valve；14, digestion pool；15, quartz digestion room；16, light source；17, photoelectric converter；
18, the second high pressure valve；19, heater strip；20, relay is used in heating；21, fan；22, temperature sensor；23, shut-off valve；24, it controls
System pump；25, overflow cup；26, the first reagent bottle；27, the second reagent bottle；28, standard sample bottle；29, third reagent bottle；30, it steams
Distilled water bottle.
Specific embodiment
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation
Example makes further description to the utility model.It should be appreciated that specific embodiment described herein is only to explain
The utility model is not used to limit the utility model.
In view of the shortcomings of the prior art, the utility model proposes a kind of monitoring water quality on line based on programmable controller to set
It is standby, stability and anti-interference ability are improved to reach, without welding main circuit board, easy-to-connect is easy to the purpose of Function Extension.
A kind of monitoring water quality on line equipment based on programmable controller, as depicted in figs. 1 and 2, including it is control system, compacted
Dynamic pump 5, stepper motor driver 6, meter 7, multiposition valve 11, two-position three-way valve 12, the first high pressure valve 13, digestion pool 14, the
Two high pressure valves 18, fan 21, shut-off valve 23, control pump 24, overflow cup 25, the first reagent bottle 26, the second reagent bottle 27, standard sample
Product bottle 28, third reagent bottle 29 and distilled water bottle 30；
One end of the peristaltic pump 5 is connected to outside air；
The stepper motor driver 6 connects and controls the progress motor of peristaltic pump 5；
The meter 7 includes gauge line 8, upper liquid level sensor 9, lower liquid level sensor 10；One end of the meter 7
It is connect with the other end of the peristaltic pump 5, the other end of meter 7 is connect with the centre bore of the multiposition valve 11；
The multiposition valve 11 includes centre bore, multiposition valve port K1-K8 and multidigit valve relay J1-J8；
The centre bore is connect with multiposition valve port K1-K8 respectively；
The multidigit valve relay J1-J8 is respectively corresponded and is controlled the multiposition valve port K1-K8 opening and closing；
The multiposition valve port K2 is connect with the second reagent bottle 27；
The multiposition valve port K4 is connect with the first reagent bottle 26；
The multiposition valve port K5 is connect with distilled water bottle 30；
The multiposition valve port K6 is connect with third reagent bottle 29；
The multiposition valve port K8 is connect with standard sample bottle 28；
The distilled water bottle 30 is for accommodating distilled water；
The standard sample bottle 28 is used to accommodate the standard sample of requirement of experiment；
First reagent bottle 26 is used to accommodate the first reagent of requirement of experiment；Second reagent bottle 27 is for accommodating reality
Test the second reagent of requirement；The third reagent bottle 29 is used to accommodate the third reagent of requirement of experiment；
The input terminal of the two-position three-way valve 12 is connect with the multiposition valve port K3, and the first output end connects waste liquid
Bucket, second output terminal connect wastewater barrel；
The both ends of first high pressure valve 13 are connect with the multiposition valve port K1 and digestion pool 14 respectively；
The digestion pool 14 includes quartz digestion room 15, light source 16, photoelectric converter 17, heater strip 19, heats and use relay
Device 20 and temperature sensor 22；
The light source 16 and photoelectric converter 17 are mounted on the two sides of quartz digestion room 15 relatively respectively；
The both ends of second high pressure valve 18 are connect with the digestion pool 14 and outside air respectively；
The fan 21 is mounted near digestion pool 14, for cooling down for digestion pool 14；
Connecting tube is inserted into the upper end of the overflow cup 25, and the other end of connecting tube is connect with multiposition valve port K7；It is described to overflow
The top of flow cup 25 is connect with drain pipe, and lower end is connect with shut-off valve 23；
It is described control pump 24 both ends respectively with shut-off valve 23 and water sample；
The control system includes programmable controller 1, thermal module 2 matched with the programmable controller 1, can expand
Open up digital output module 3 and touch screen 4；Wherein, the programmable controller 1 connects with thermal module 2 and touch screen 4 respectively
It connects；The thermal module 2 is connect with expansible digital output module 3；
First output end Q0.0 of the programmable controller 1 is connected to the pulse of the stepper motor driver 6 of peristaltic pump 5
Input terminal；
The second output terminal Q0.1 of the programmable controller 1 is connected to the direction of the stepper motor driver 6 of peristaltic pump 5
Input terminal；
The third output end Q0.2 of the programmable controller 1 is connected to the enabled of the stepper motor driver 6 of peristaltic pump 5
Input terminal；
4th output end Q0.3 of the programmable controller 1 is connected to the multidigit valve relay J1；
5th output end Q0.4 of the programmable controller 1 is connected to the multidigit valve relay J2；
6th output end Q0.5 of the programmable controller 1 is connected to the multidigit valve relay J3；
7th output end Q0.6 of the programmable controller 1 is connected to the multidigit valve relay J4；
8th output end Q0.7 of the programmable controller 1 is connected to the multidigit valve relay J5；
9th output end Q1.0 of the programmable controller 1 is connected to the multidigit valve relay J6；
11st output end Q1.1 of the programmable controller 1 is connected to the multidigit valve relay J7；
12nd output end Q1.2 of the programmable controller 1 is connected to the multidigit valve relay J8；
13rd output end Q1.3 of the programmable controller 1 is connected to the control heating relay 20；
First output point KQ0.0 of the expansible digital output module 3 is connected to the fan 21；
Second output point KQ0.1 of the expansible digital output module 3 is connected to the two-position three-way valve 12；
The third output point KQ0.2 of the expansible digital output module 3 is connected to first high pressure valve 13；
4th output point KQ0.3 of the expansible digital output module 3 is connected to second high pressure valve 18；
5th output point KQ0.4 of the expansible digital output module 3 is connected to the relay of the shut-off valve 23
With the relay of control pump 24；
6th output point KQ0.5 of the expansible digital output module 3 is connected to the light source 16；
The upper liquid level sensor 9 is connected to the digital quantity input terminal I0.4 of the programmable controller 1；
The lower liquid level sensor 10 is connected to the digital quantity input terminal I0.5 of the programmable controller 1；
The temperature sensor 22 is respectively connected to the input terminal A+ and input terminal A- of the thermal module 2；
The photoelectric converter 17 connects the analog input end V+ and input terminal M to programmable controller 1；
A kind of control method of the monitoring water quality on line equipment based on programmable controller is based on programmable control using above-mentioned
The monitoring water quality on line equipment of device processed, comprising the following steps:
Step 1, " instruction 1 "-" instruction 17 " is established in the controls；
" instruction 1 " be the programmable controller 1 control the starting of peristaltic pump 5, according to rotate clockwise, according to certain
Speed rotation；" instruction 1 " specifically includes:
Enabled input terminal of the digital output end Q0.2 of the programmable controller 1 to the stepper motor driver 6
It issues high level 24V signal and controls the starting of peristaltic pump 5；The digital output end Q0.1 of the programmable controller 1 is to institute
The direction input terminal for stating stepper motor driver 6 issues high level 24V signal control peristaltic pump 5 and rotates clockwise；It is described to compile
The digital output end Q0.0 of range controller 1 passes through the arteries and veins to the pulse input end of stepper motor driver 6 sending certain frequency
Punching, pulse frequency are 50~2000Hz, and control stepper motor is rotated according to corresponding speed；
" instruction 2 " be the programmable controller 1 control the starting of peristaltic pump 5, according to rotate counterclockwise, according to certain
Speed rotation；" instruction 2 " specifically includes:
Enabled input terminal of the digital output end Q0.2 of the programmable controller 1 to the stepper motor driver 6
It issues high level 24V signal control peristaltic pump 5 to start, the digital output end Q0.1 of the programmable controller 1 is to the step
Direction input terminal sending low level signal control peristaltic pump 5 into motor driver 6 rotates counterclockwise, the programmable controller
1 digital output end Q0.0 issues the pulse of certain frequency to the pulse input end of stepper motor driver 6, and pulse frequency is
50~2000Hz controls the peristaltic pump 5 and rotates according to corresponding speed；
" instruction 3 " is that the programmable controller 1 controls the stopping of peristaltic pump 5；" instruction 3 " specifically includes:
The digital output end Q0.2 of the programmable controller 1 is issued to the enabled input terminal of stepper motor driver 6
Low level signal, which controls peristaltic pump 5, to be stopped；
" instruction 4 " is that the programmable controller 1 control multiposition valve 11 takes distilled water to inject from distilled water bottle 30
Meter 7；" instruction 4 " specifically includes:
The digital output end Q0.7 of the programmable controller 1 issues high level 24V to the relay J5 of multiposition valve 11
Signal, control relay J5 are opened, and the multiposition valve port K5 of J5 control is connected to centre bore, then " instruction 1 " described in execution, are made
Then distilled water in the distilled water bottle 30 arrives the gauge line 8 through multiposition valve port K5 to centre bore；
Timing described in execution " instruction 1 "；The time that estimated gauge line 8 is filled with is set as M1, M1Value is set as 20~
60 seconds；
Upper liquid level sensor 9 in the meter 7 issues high electricity to the numerical quantities input terminal I0.4 of programmable controller 1
Ordinary mail number illustrates that distilled water arrived liquid level in the gauge line 8, stop timing, and timing result is calculated as T1；
Work as T1> M1When, the upper liquid level sensor 9 described at this time is not sent out to the numerical quantities input terminal I0.4 of programmable controller 1
High level signal out illustrates to take distilled water appearance abnormal from distilled water bottle 30, executes " instruction 3 ", PLC technology 1 passes through touch
Screen 4 issues alarm signal, and terminates and operate in next step；
Work as T1≤M1When, illustrate to take distilled water normal from distilled water bottle 30, executes " instruction 3 ", the number of PLC technology 1
It measures output end Q0.7 and issues low level signal to the relay J5 of multiposition valve 11, perform the next step operation；
" instruction 5 " is that the programmable controller 1 control multiposition valve 11 takes the first reagent from the first reagent bottle 26
Meter 7 is injected, " instruction 5 " specifically includes:
The digital output end Q0.6 of PLC technology 1 issues high level 24V signal, control to the relay J4 of multiposition valve 11
Relay J4 processed is opened, and the multiposition valve port K4 of J4 control is connected to centre bore, then executes " instruction 1 ", the first reagent bottle 26
In the first reagent through multiposition valve port K4 to centre bore, then to the gauge line 8 in meter 7；
Timing described in execution " instruction 1 "；The time that estimated gauge line 8 is filled with is set as M2, M2Value is set as 20~
60 seconds；
Upper liquid level sensor 9 in the meter 7 issues high electricity to the numerical quantities input terminal I0.4 of programmable controller 1
Ordinary mail number illustrates that first reagent arrived liquid level in the gauge line 8, stop timing, and timing result is calculated as T2；
Work as T2> M2When, the upper liquid level sensor 9 described at this time is not sent out to the numerical quantities input terminal I0.4 of programmable controller 1
High level signal out illustrates to take the appearance of the first reagent abnormal from the first reagent bottle 26, executes " instruction 3 ", PLC technology 1 passes through
Touch screen 4 issues alarm signal, and terminates and operate in next step；
Work as T2≤M2When, illustrate to take the first reagent normal from the first reagent bottle 26, executes " instruction 3 ", PLC technology 1
Digital output end Q0.6 issues low level signal to the relay J4 of multiposition valve 11, performs the next step operation；
" instruction 6 " is that the programmable controller 1 control multiposition valve 11 takes the second reagent from the second reagent bottle 27
Meter 7 is injected, " instruction 6 " specifically includes:
The digital output end Q0.4 of PLC technology 1 issues high level 24V signal, control to the relay J2 of multiposition valve 11
Relay J2 processed is opened, and the multiposition valve port K2 of J2 control is connected to centre bore, then executes " instruction 1 ", the second reagent bottle 27
In the second reagent through multiposition valve port K2 to centre bore, then to the gauge line 8 in meter 7；
Timing described in execution " instruction 1 "；The time that estimated gauge line 8 is filled with is set as M3, M3Value is set as 20~
60 seconds；
Upper liquid level sensor 9 in the meter 7 issues high electricity to the numerical quantities input terminal I0.4 of programmable controller 1
Ordinary mail number illustrates that second reagent arrived liquid level in the gauge line 8, stop timing, and timing result is calculated as T3；
Work as T3> M3When, the upper liquid level sensor 9 described at this time is not sent out to the numerical quantities input terminal I0.4 of programmable controller 1
High level signal out illustrates to take the appearance of the second reagent abnormal from the second reagent bottle 27, executes " instruction 3 ", PLC technology 1 passes through
Touch screen 4 issues alarm signal, and terminates and operate in next step；
Work as T3≤M3When, illustrate to take the second reagent normal from the second reagent bottle 27, executes " instruction 3 ", PLC technology 1
Digital output end Q0.4 issues low level signal to the relay J2 of multiposition valve 11, performs the next step operation；
" instruction 7 " is that the programmable controller 1 control multiposition valve 11 takes third reagent from third reagent bottle 29
Meter 7 is injected, " instruction 7 " specifically includes:
The digital output end Q1.0 of PLC technology 1 issues high level 24V signal, control to the relay J6 of multiposition valve 11
Relay J6 processed is opened, and the multiposition valve port K6 of J6 control is connected to centre bore, then executes " instruction 1 ", third reagent bottle 29
In third reagent through multiposition valve port K6 to centre bore, then to the gauge line 8 in meter 7；
Timing described in execution " instruction 1 "；The time that estimated gauge line 8 is filled with is set as M4, M4Value is set as 20~
60 seconds；
Upper liquid level sensor 9 in the meter 7 issues high electricity to the numerical quantities input terminal I0.4 of programmable controller 1
Ordinary mail number illustrates that third reagent arrived liquid level in the gauge line 8, stop timing, and timing result is calculated as T4；
Work as T4> M4When, the upper liquid level sensor 9 described at this time is not sent out to the numerical quantities input terminal I0.4 of programmable controller 1
High level signal out illustrates to take the appearance of third reagent abnormal from third reagent bottle 29, executes " instruction 3 ", PLC technology 1 passes through
Touch screen 4 issues alarm signal, and terminates and operate in next step；
Work as T4≤M4When, illustrate to take third reagent normal from third reagent bottle 29, executes " instruction 3 ", PLC technology 1
Digital output end Q1.0 issues low level signal to the relay J6 of multiposition valve 11, performs the next step operation；
" instruction 8 " is that the programmable controller 1 control multiposition valve 11 takes standard sample from standard sample bottle 28
Meter 7 is injected, " instruction 8 " specifically includes:
The digital output end Q1.2 of PLC technology 1 issues high level 24V signal, control to the relay J8 of multiposition valve 11
Relay J8 processed is opened, and the multiposition valve port K8 of J8 control is connected to centre bore, then executes " instruction 1 ", standard sample bottle 28
In standard sample through multiposition valve port K8 to centre bore, then to the gauge line 8 in meter 7；
Timing described in execution " instruction 1 "；The time that estimated gauge line 8 is filled with is set as M5, M5Value is set as 20~
60 seconds；
Upper liquid level sensor 9 in the meter 7 issues high electricity to the numerical quantities input terminal I0.4 of programmable controller 1
Ordinary mail number illustrates that the 8 Plays sample of gauge line arrived liquid level, stops timing, and timing result is calculated as T5；
Work as T5> M5When, the upper liquid level sensor 9 described at this time is not sent out to the numerical quantities input terminal I0.4 of programmable controller 1
High level signal out illustrates to take standard sample appearance abnormal from standard sample bottle 28, executes " instruction 3 ", PLC technology 1 is logical
It crosses touch screen 4 and issues alarm signal, and terminate and operate in next step；
Work as T5≤M5When, illustrate to take standard sample normal from standard sample bottle 28, executes " instruction 3 ", PLC technology 1
Digital output end Q1.2 to the relay J8 of multiposition valve 11 issue low level signal, perform the next step operation；
" instruction 9 " is that the programmable controller 1 control multiposition valve 11 takes liquid to inject digestion pool from meter 7
14, " instruction 9 " specifically includes:
The digital output end Q0.3 of PLC technology 1 issues high level 24V signal, control to the relay J1 of multiposition valve 11
Relay J1 processed is opened, and then the output end KQ0.2 of expansible digital output module 3 issues high level to the first high pressure valve 13
24V signal, the first high pressure valve 13 of control are opened, and the output end KQ0.3 of expansible digital output module 3 is to the second high pressure valve 18
High level 24V signal is issued, the second high pressure valve 18 of control is opened, and " instruction 2 " is then executed；
Timing described in execution " instruction 2 "；The time that estimated gauge line 8 is drained is set as M6, M6Value is set as 10~
60 seconds；
Lower liquid level sensor 10 in the meter 7 issues high to the numerical quantities input terminal I0.5 of programmable controller 1
Level signal illustrates that liquid arrived liquid level in the gauge line 8, stop timing, and timing result is calculated as T6；
Work as T6> M6When, the lower liquid level sensor 10 described at this time is not sent out to the numerical quantities input terminal I0.5 of programmable controller 1
High level signal out illustrates that liquid injection quartz digestion room 15 is taken exception occur from meter 7, executes " instruction 3 ", may be programmed
Control 1 issues alarm signal by touch screen 4, and terminates and operate in next step；
Work as T6≤M6When, illustrate to take liquid injection quartz digestion room 15 normal from meter 7, executes " instruction 3 ", can compile
The digital output end Q0.3 of process control 1 issues low level signal, expansible digital output to the relay J1 of multiposition valve 11
The output end KQ0.2 of module 3 issues low level signal, the output end of expansible digital output module 3 to the first high pressure valve 13
KQ0.3 issues low level signal to the second high pressure valve 18, performs the next step operation；
" instruction 10 " is that the programmable controller 1 control multiposition valve 11 takes liquid injection metering from digestion pool 14
Then device 7 controls multiposition valve 11 and liquid is taken to be discharged from meter 7 through the B mouth of two-position three-way valve 12, " instruction 10 " is specific
Include:
The digital output end Q0.3 of step a, PLC technology 1 issue high level 24V to the relay J1 of multiposition valve 11
Signal, control relay J1 are opened, and then the output end KQ0.2 of expansible digital output module 3 is sent out to the first high pressure valve 13
High level 24V signal out, the first high pressure valve 13 of control are opened, and the output end KQ0.3 of expansible digital output module 3 is to second
High pressure valve 18 issues high level 24V signal, and the second high pressure valve 18 of control is opened, and then executes " instruction 1 "；
Timing described in execution " instruction 1 "；The time that estimated gauge line 8 is filled with is set as M7, M7Value is set as 10~
60 seconds；
Upper liquid level sensor 9 in the meter 7 issues high electricity to the numerical quantities input terminal I0.4 of programmable controller 1
Ordinary mail number illustrates that liquid arrived liquid level in the gauge line 8, stop timing, and timing result is calculated as T7；
Work as T7> M7When, the upper liquid level sensor 9 described at this time is not sent out to the numerical quantities input terminal I0.4 of programmable controller 1
High level signal out illustrates that liquid injection meter 7 is taken exception occur from digestion pool 14, executes " instruction 3 ", PLC technology
1 issues alarm signal by touch screen 4, and executes step b；
Work as T7≤M7When, illustrate to take liquid injection meter 7 normal from digestion pool 14, executes " instruction 3 ", programmable control
The digital output end Q0.3 of system 1 issues low level signal, expansible digital output module 3 to the relay J1 of multiposition valve 11
Output end KQ0.2 to the first high pressure valve 13 issue low level signal, the output end KQ0.3 of expansible digital output module 3
Low level signal is issued to the second high pressure valve 18, and executes step b, then return step a；
The digital output end Q0.5 of step b, PLC technology 1 issue high level 24V to the relay J3 of multiposition valve 11
Signal, control relay J3 are opened, and the digital output mouth KQ0.2 of expansible digital output module 3 is to two-position three-way valve 12
High level 24V signal is issued, the road the B conducting of two-position three-way valve 12 executes " instruction 2 "；
The timing since execution " instruction 2 "；The time that estimated gauge line 8 is drained is set as M8, M8Value is set as 10~60
Second；
Lower liquid level sensor 10 in the meter 7 issues high to the numerical quantities input terminal I0.5 of programmable controller 1
Level signal illustrates that liquid arrived liquid level in the gauge line 8, stop timing, and timing result is calculated as T8；
Work as T8> M8When, the lower liquid level sensor 10 described at this time is not sent out to the numerical quantities input terminal I0.5 of programmable controller 1
High level signal out illustrates that liquid is taken abnormal, execution " instruction occur through the B mouth discharge of two-position three-way valve 12 from meter 7
3 ", PLC technology 1 issues alarm signal by touch screen 4, and terminates and operate in next step；
Work as T8≤M8When, illustrate to take liquid that normal, execution " instruction is discharged through the B mouth of two-position three-way valve 12 from meter 7
3 ", the digital output end Q0.5 of PLC technology 1 issues low level signal to the relay J3 of multiposition valve 11, performs the next step
Operation；
" instruction 11 " is that the programmable controller 1 control multiposition valve 11 takes liquid injection metering from digestion pool 14
Then device 7 controls multiposition valve 11 and liquid is taken to be discharged from meter 7 through the A mouth of two-position three-way valve 12, " instruction 11 " is specific
Include:
The digital output end Q0.3 of step c, PLC technology 1 issue high level 24V to the relay J1 of multiposition valve 11
Signal, control relay J1 are opened, and then the output end KQ0.2 of expansible digital output module 3 is sent out to the first high pressure valve 13
High level 24V signal out, the first high pressure valve 13 of control are opened, and the output end KQ0.3 of expansible digital output module 3 is to second
High pressure valve 18 issues high level 24V signal, and the second high pressure valve 18 of control is opened, and then executes " instruction 1 "；
Timing described in execution " instruction 1 "；The time that estimated gauge line 8 is filled with is set as M9, M9Value is set as 10~
60 seconds；
Upper liquid level sensor 9 in the meter 7 issues high electricity to the numerical quantities input terminal I0.4 of programmable controller 1
Ordinary mail number illustrates that liquid arrived liquid level in the gauge line 8, stop timing, and timing result is calculated as T9；
Work as T9> M9When, the upper liquid level sensor 9 described at this time is not sent out to the numerical quantities input terminal I0.4 of programmable controller 1
High level signal out illustrates that liquid injection meter 7 is taken exception occur from digestion pool 14, executes " instruction 3 ", PLC technology
1 issues alarm signal by touch screen 4, and executes step d；
Work as T9≤M9When, illustrate to take liquid injection meter 7 normal from digestion pool 14, executes " instruction 3 ", programmable control
The digital output end Q0.3 of system 1 issues low level signal, expansible digital output module 3 to the relay J1 of multiposition valve 11
Output end KQ0.2 to the first high pressure valve 13 issue low level signal, the output end KQ0.3 of expansible digital output module 3
Low level signal is issued to the second high pressure valve 18, and executes step d, then return step c；
The digital output end Q0.5 of step d, PLC technology 1 issue high level 24V to the relay J3 of multiposition valve 11
Signal, control relay J3 are opened, and the digital output mouth KQ0.1 of expansible digital output module 3 is to two-position three-way valve 12
High level 24V signal is issued, the road the A conducting of two-position three-way valve 12 executes " instruction 2 "；
The timing since execution " instruction 2 "；The time that estimated gauge line 8 is drained is set as M10, M10Value is set as 10~60
Second；
Lower liquid level sensor 10 in the meter 7 issues high to the numerical quantities input terminal I0.5 of programmable controller 1
Level signal illustrates that liquid arrived liquid level in the gauge line 8, stop timing, and timing result is calculated as T10；
Work as T10> M10When, the lower liquid level sensor 10 described at this time is not to the numerical quantities input terminal I0.5 of programmable controller 1
High level signal is issued, illustrates that liquid is taken abnormal, execution " instruction occur through the B mouth discharge of two-position three-way valve 12 from meter 7
3 ", PLC technology 1 issues alarm signal by touch screen 4, and terminates and operate in next step；
Work as T10≤M10When, illustrate that liquid is taken to be discharged normally through the A mouth of two-position three-way valve 12 from meter 7, execution " refers to
3 " are enabled, the digital output end Q0.5 of PLC technology 1 issues low level signal to the relay J3 of multiposition valve 11, executes next
Step operation；
" instruction 12 " is starting light source 16 and photoelectric converter 17, carries out photoelectric measurement；" instruction 12 " is specific
Include:
The digital output port KQ0.5 of expansible digital output module 3 issues high level 24V signal to light source 16,
Light source 16 is opened and is shone, and light enters photoelectric converter 17, the photoelectricity that photoelectric converter 17 will measure by quartz digestion room 15
V is pressed to be input to programmable controller 1 through the analog input end V+ and M of programmable controller 1, through 1 modulus of programmable controller
It after conversion, stores into programmable controller 1, the digital output port KQ0.5 of expansible digital output module 3 is to light source
16 issue low level signal, close light source 16；
" instruction 13 " is the heating function of starting digestion pool 14；" instruction 13 " specifically includes:
Measuring temperature is input to temperature through the input port A+ and A- of thermal module 2 by the temperature sensor 22 of digestion pool 14
Module 2 is then input to programmable controller 1；
If measuring temperature is greater than 1000 DEG C, illustrate 22 failure of temperature sensor, PLC technology 1 is sent out by touch screen 4
Alarm signal out, and terminate and operate in next step；
If measuring temperature is not more than 1000 DEG C, operation is performed the next step；
Programmable controller 1 is according to pid algorithm, by digital output end Q1.3 to the heating relay of digestion pool 14
20 issue high level 24V signal, and the heater strip 19 of control digestion pool 14 starts heating；
The timing since starting heating；The time that estimated measuring temperature reaches requirement is set as M11, M11Value is set as 10~60
Second；
When the incrementss of 22 measuring temperature of temperature sensor are not less than 0.3 DEG C, illustrate that heating is carrying out, stop meter
When, timing result is calculated as T11；
Work as T11> M11When, the incrementss of 22 measuring temperature of temperature sensor illustrate heater strip less than 0.3 DEG C at this time
19 open circuits, PLC technology 1 issue alarm signal by touch screen 4, and terminate and operate in next step；
Work as T11≤M11When, the incrementss of 22 measuring temperature of temperature sensor are not less than 0.3 DEG C, perform the next step behaviour
Make；
Programmable controller 1 is according to pid algorithm, and temperature in room 14 is cleared up in control, and, close to set temperature, error is ± 0.3
DEG C, and according to setting soaking time T12Second, T12It is 120~800 seconds；Keep T12Afterwards, programmable controller 1 is defeated by digital quantity
Outlet Q1.3 issues 2 signal of low level to the heating relay 20 of digestion pool 14, performs the next step operation；
" instruction 14 " is that starting fan 21 cools down to digestion pool 14；" instruction 14 " specifically includes:
Set temperature setting value；When desired temperature is lower than the measuring temperature of temperature sensor 22, expansible digital quantity
The digital output port KQ0.0 of output module 3 issues high level 24V signal to fan 21, and fan 21 rotates, and clears up in room 15
Temperature reduce, when measuring temperature be equal to desired temperature when, the digital output port of expansible digital output module 3
KQ0.0 issues low level signal to cooling fan 21, and fan 21 stops operating, and performs the next step operation；
" instruction 15 " is to stir mixing liquid in quartz digestion room 15 by the blow bubble into quartz digestion room 15；
" instruction 15 " specifically includes:
The digital output end Q0.3 of PLC technology 1 issues high level 24V signal, control to the relay J1 of multiposition valve 11
Relay J1 processed is opened, and then the output end KQ0.2 of expansible digital output module 3 issues high level to the first high pressure valve 13
24V signal, the first high pressure valve 13 of control are opened, and the output end KQ0.3 of expansible digital output module 3 is to the second high pressure valve 18
High level 24V signal is issued, the second high pressure valve 18 of control is opened, and " instruction 2 " is then executed；
The timing since execution " instruction 2 ", is denoted as T13；The time that estimated blow bubble is completed is set as M13, M13Value is set as 10
~100 seconds；
Work as T13> M13When, it executes " instruction 3 ", the relay of the digital output end Q0.3 of PLC technology 1 to multiposition valve 11
Device J1 issues low level signal, and then the output end KQ0.2 of expansible digital output module 3 is issued low to the first high pressure valve 13
The output end KQ0.3 of level signal, expansible digital output module 3 issues low level signal to the second high pressure valve 18, executes
It operates in next step；
" instruction 16 " is that water sample is drawn in starting automatically；" instruction 16 " specifically includes:
The digital output mouth KQ0.4 of expansible digital output module 3 issues high electricity to shut-off valve 23 and water pump 24
Flat 24V signal, shut-off valve 23 enter opening state, and water pump 24 extracts water sample to overflow cup 25, and from the overflow of overflow cup 25
Mouth overflows；
Timing issuing high level 24V signal since the digital output mouth KQ0.4 of expansible digital output module 3,
It is denoted as T14；Sample time X is set by touch screen 4, X value is 60~1800 seconds；
Work as T14When=X, the digital output mouth KQ0.4 of expansible digital output module 3 issues low level signal, draws water
Pump stops pumping, and shut-off valve 23 enters off state；
Timing issuing low level signal since the digital output mouth KQ0.4 of expansible digital output module 3, is denoted as
T15；Sample time Y is set by touch screen 4, Y value is 60~1800 seconds；
Work as T15When=Y, operation is performed the next step；
" instruction 17 " is that water sampling injects meter 7 from overflow cup 25；" instruction 17 " specifically includes:
The digital output end Q1.1 of PLC technology 1 issues high level 24V signal, control to the relay J7 of multiposition valve 11
Relay J7 processed is opened, and the multiposition valve port K7 of J7 control is connected to centre bore, is then executed " instruction 1 ", in overflow cup 25
Water sample is through multiposition valve port K7 to centre bore, then to the gauge line 8 in meter 7；
The time that estimated gauge line 8 is filled with is set as M by the timing since execution " instruction 1 "16, M16Value is set as 10~60
Second；
Work as T16> M16When, upper liquid level sensor 9 does not issue high electricity to the numerical quantities input terminal I0.4 of programmable controller 1
Ordinary mail number illustrates that water sample occurs abnormal from overflow cup 25, executes " instruction 3 ", PLC technology 1 issues report by touch screen 4
Alert signal, and terminate and operate in next step；
Work as T16≤M16When, illustrate that water sample occurs normal from overflow cup 25, executes " instruction 3 ", the number of PLC technology 1
Word amount output end Q1.1 issues low level signal to the relay J7 of multiposition valve 11, performs the next step operation；
Step 2, it is given an order by executing, checks each component of the monitoring device, and clean digestion pool 14 and metering
Device 7；
" instruction 11 " is carried out, " instruction 12 "；If the photovoltage value measured is less than 0.5V and illustrates light source 16 or photoelectric conversion
There is exception in device 17, and PLC technology 1 issues alarm signal by touch screen 4, and terminates and operate in next step, otherwise continues to execute
Subsequent instruction；
" instruction 4 " is carried out, " instruction 9 ", " instruction 4 ", " instruction 9 ", " instruction 4 ", " instruction 9 ", " instruction 4 ", " instruction 9 ",
" instruction 10 ", " instruction 4 ", " instruction 9 ", " instruction 4 ", " instruction 9 ", " instruction 4 ", " instruction 9 ", " instruction 4 ", " instruction 9 " " refer to
12 " are enabled, if the photovoltage value V measured is less than 1.5v and illustrates that exception occur in light path system i.e. light source 16 or photoelectric converter 17,
PLC technology 1 issues alarm signal by touch screen 4, and terminates and operate in next step, otherwise carries out step 3；
Step 3, the monitoring water quality on line equipment is calibrated using standard sample；
Step 3-1 inputs the concentration M of standard sample by touch screen 4 to programmable controller 10It is needed with standard sample
The times N of calibration；
Step 3-2 measures the photovoltage value of " zero point liquid "；" zero point night " is the liquid that sample concentration is zero, using distillation
Water makees " zero point liquid ", i.e. strength of fluid C0=0；
Step 3-2-1 calibrates times N according to the standard sample inputted in step 3-1, executes n times step 3-2-2；
Step 3-2-2 carries out " instruction 10 ", " instruction 4 ", " instruction 9 ", " instruction 5 ", " instruction 6 ", " instruction 7 ", " instruction
15 ", " instruction 13 ", " instruction 14 ", " instruction 12 " will measure photovoltage value Vn1It is saved, then carries out " instruction 11 ", " refer to
4 " are enabled, " instruction 9 ", " instruction 4 ", " instruction 9 ", " instruction 4 ", " instruction 9 ", " instruction 4 ", " instruction 9 ", " instruction 10 ", " instruction
4 ", " instruction 9 ", " instruction 4 ", " instruction 9 ", " instruction 4 ", " instructing 9 ", " instruction 4 ", " instruction 9 ", " instruction 12 ", system will survey
Determine photovoltage value Vn2It is saved；
Step 3-2-3 will carry out the V found out after n times step 3-2-2n1, i.e. V11、V21……VN1It is saved, and
Vn2, i.e. V12、V22……VN2It is saved；According to algorithm An=log (Vn1/Vn2) calculate the absorbance A of zero point liquidn, i.e. A1、
A2……ANAnd it saves；
Step 3-3, the photovoltage value of measurement standard sample, the concentration of standard sample are C1；
Step 3-2-1 calibrates times N according to the standard sample inputted in step 3-1, executes n times step 3-3-2；
Step 3-3-2 carries out " instruction 10 ", " instruction 8 ", " instruction 9 ", " instruction 5 ", " instruction 6 ", " instruction 7 ", " instruction
15 ", " instruction 13 ", " instruction 14 ", " instruction 12 " will measure photovoltage value Vn1' saved, following finger is continued to execute after allowing
It enables, " instruction 11 ", " instruction 4 ", " instruction 9 ", " instruction 4 ", " instruction 9 ", " instruction 4 ", " instruction 9 ", " instruction 4 ", " instruction 9 ",
" instruction 10 ", " instruction 4 ", " instruction 9 ", " instruction 4 ", " instruction 9 ", " instruction 4 ", " instruction 9 ", " instruction 4 ", " instruction 9 " " refer to
12 " are enabled, photovoltage value V will be measuredn2' saved, and according to algorithm An'=log (Vn1’/Vn2') calculate standard sample
Absorbance An', i.e. A1’、A2’……AN' and save；
Step 3-4, according to the absorbance A of the step 3-2 zero point liquid measured1、A2……AN, according to algorithmIt asks
The average value of n times measurement zero point liquid absorbance out
According to algorithmIt finds outAnd it saves；
According to the absorbance A of the step 3-3 standard sample measured1’、A2’……AN', according to algorithmIt asks
The average value of n times measurement zero point liquid absorbance out
According to algorithmIt finds outAnd it saves；
Step 4, by touch screen 4 to the period of the setting monitoring of programmable controller 1, i.e., the described monitoring device is at interval of Xo
The primary monitoring of hour starting, Xo value are 1~6,
Pass through water sampling time T15 of the touch screen 4 into the setting of programmable controller 1 " instruction 19 " and water sample quiescent time
T16；
Step 5, starting monitoring；
Step 5-1 carries out " instruction 10 ", " instruction 16 ", " instruction 9 ", " instruction 5 ", " instruction 6 ", " instruction 7 ", " instruction
18 ", " instruction 13 ", " instruction 14 ", " instruction 12 ", by the photovoltage value V of measurementc1It is saved, then proceeds by " instruction
11 ", " instruction 4 ", " instruction 9 ", " instruction 4 ", " instruction 9 ", " instruction 4 ", " instruction 9 ", " instruction 4 ", " instruction 9 ", " instruction 10 ",
" instruction 4 ", " instruction 9 ", " instruction 4 ", " instruction 9 ", " instruction 4 ", " instruction 9 ", " instruction 4 ", " instruction 9 ", " instruction 12 " will survey
Determine photovoltage value Vc2It is saved；
Step 5-2, according to algorithm Ac=log (Vc1/Vc2) calculate the absorbance A of water samplecAnd it saves；
Step 5-3, according to algorithm Ac=kC+b, wherein C is water sample concentration, obtains C=(Ac-b)/k, and save；
By water sample concentration C real-time display in touch screen 4, pass through 4 query history water sample concentration value of touch screen；
Step 5-4, after monitoring cycle Xo, return step 4-1.
Claims (3)
1. a kind of monitoring water quality on line equipment based on programmable controller characterized by comprising control system, peristaltic pump,
Stepper motor driver, multiposition valve, two-position three-way valve, the first high pressure valve, digestion pool, the second high pressure valve, fan, is cut meter
Only valve, control pump, overflow cup, the first reagent bottle, the second reagent bottle, standard sample bottle, third reagent bottle and distilled water bottle；
One end of the peristaltic pump is connected to outside air；
The stepper motor driver connects and controls the progress motor of peristaltic pump；
The meter includes gauge line, upper liquid level sensor, lower liquid level sensor；One end of the meter and the wriggling
The other end of pump connects, and the other end of meter is connect with the centre bore of the multiposition valve；
The multiposition valve includes centre bore, multiposition valve port K1-K8 and multidigit valve relay J1-J8；
The centre bore is connect with multiposition valve port K1-K8 respectively；
The multidigit valve relay J1-J8 is respectively corresponded and is controlled the multiposition valve port K1-K8 opening and closing；
The multiposition valve port K2 is connect with the second reagent bottle；
The multiposition valve port K4 is connect with the first reagent bottle；
The multiposition valve port K5 is connect with distilled water bottle；
The multiposition valve port K6 is connect with third reagent bottle；
The multiposition valve port K8 is connect with standard sample bottle；
The distilled water bottle is for accommodating distilled water；
The standard sample bottle is used to accommodate the standard sample of requirement of experiment；
First reagent bottle is used to accommodate the first reagent of requirement of experiment；Second reagent bottle is for accommodating requirement of experiment
Second reagent；The third reagent bottle is used to accommodate the third reagent of requirement of experiment；
The input terminal of the two-position three-way valve is connect with the multiposition valve port K3, the first output end connection waste liquid barrel, and second
Output end connects wastewater barrel；
The both ends of first high pressure valve are connect with the multiposition valve port K1 and digestion pool respectively；
The digestion pool includes quartz digestion room, light source, photoelectric converter, heater strip, heating relay and temperature sensor；
The light source and photoelectric converter are mounted on the two sides of quartz digestion room relatively respectively；
The both ends of second high pressure valve are connect with the digestion pool and outside air respectively；
The fan is mounted near digestion pool, for cooling down for digestion pool；
Connecting tube is inserted into the upper end of the overflow cup, and the other end of connecting tube is connect with multiposition valve port K7；The overflow cup
Top is connect with drain pipe, and lower end is connect with shut-off valve；
It is described control pump both ends respectively with shut-off valve and water sample.
2. the monitoring water quality on line equipment according to claim 1 based on programmable controller, which is characterized in that the control
System processed includes programmable controller, thermal module matched with the programmable controller, expansible digital output module
And touch screen；Wherein, the programmable controller is connect with thermal module and touch screen respectively；The thermal module with it is expansible
The connection of digital output module.
3. the monitoring water quality on line equipment according to claim 2 based on programmable controller, which is characterized in that it is described can
First output end Q0.0 of programmable controller is connected to the pulse input end of the stepper motor driver of peristaltic pump；
The second output terminal Q0.1 of the programmable controller is connected to the direction input terminal of the stepper motor driver of peristaltic pump；
The third output end Q0.2 of the programmable controller is connected to the enabled input terminal of the stepper motor driver of peristaltic pump；
4th output end Q0.3 of the programmable controller is connected to the multidigit valve relay J1；
5th output end Q0.4 of the programmable controller is connected to the multidigit valve relay J2；
6th output end Q0.5 of the programmable controller is connected to the multidigit valve relay J3；
7th output end Q0.6 of the programmable controller is connected to the multidigit valve relay J4；
8th output end Q0.7 of the programmable controller is connected to the multidigit valve relay J5；
9th output end Q1.0 of the programmable controller is connected to the multidigit valve relay J6；
11st output end Q1.1 of the programmable controller is connected to the multidigit valve relay J7；
12nd output end Q1.2 of the programmable controller is connected to the multidigit valve relay J8；
13rd output end Q1.3 of the programmable controller is connected to the control heating relay；
First output point KQ0.0 of the expansible digital output module is connected to the fan；
Second output point KQ0.1 of the expansible digital output module is connected to the two-position three-way valve；
The third output point KQ0.2 of the expansible digital output module is connected to first high pressure valve；
4th output point KQ0.3 of the expansible digital output module is connected to second high pressure valve；
5th output point KQ0.4 of the expansible digital output module is connected to the relay and control pump of the shut-off valve
Relay；
6th output point KQ0.5 of the expansible digital output module is connected to the light source；
The upper liquid level sensor is connected to the digital quantity input terminal I0.4 of the programmable controller；
The lower liquid level sensor is connected to the digital quantity input terminal I0.5 of the programmable controller；
The temperature sensor is respectively connected to the input terminal A+ and input terminal A- of the thermal module；
The photoelectric converter connection analog input end V+ and input terminal M to programmable controller.
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| CN109116043A (en) * | 2018-09-17 | 2019-01-01 | 沈阳汉威科技有限公司 | Monitoring water quality on line equipment and control method based on programmable controller |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109116043A (en) * | 2018-09-17 | 2019-01-01 | 沈阳汉威科技有限公司 | Monitoring water quality on line equipment and control method based on programmable controller |
| CN109116043B (en) * | 2018-09-17 | 2024-01-30 | 沈阳汉威科技有限公司 | Water quality on-line monitoring equipment based on programmable controller and control method |
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