CN211234611U - Water quality testing capacitanc liquid proportioning device - Google Patents
Water quality testing capacitanc liquid proportioning device Download PDFInfo
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- CN211234611U CN211234611U CN201922465735.2U CN201922465735U CN211234611U CN 211234611 U CN211234611 U CN 211234611U CN 201922465735 U CN201922465735 U CN 201922465735U CN 211234611 U CN211234611 U CN 211234611U
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- 239000007788 liquid Substances 0.000 title claims abstract description 82
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 46
- 238000012372 quality testing Methods 0.000 title abstract description 4
- 238000001514 detection method Methods 0.000 claims abstract description 51
- 239000003153 chemical reaction reagent Substances 0.000 claims abstract description 23
- 102000029749 Microtubule Human genes 0.000 claims abstract description 18
- 108091022875 Microtubule Proteins 0.000 claims abstract description 18
- 210000004688 microtubule Anatomy 0.000 claims abstract description 18
- 239000002699 waste material Substances 0.000 claims abstract description 16
- 230000002572 peristaltic effect Effects 0.000 claims abstract description 11
- 238000006243 chemical reaction Methods 0.000 claims description 8
- 230000029087 digestion Effects 0.000 claims description 7
- 238000004140 cleaning Methods 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 5
- 230000000694 effects Effects 0.000 abstract description 5
- 238000011002 quantification Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 14
- 238000005516 engineering process Methods 0.000 description 9
- 238000012423 maintenance Methods 0.000 description 6
- 238000005259 measurement Methods 0.000 description 4
- 239000003990 capacitor Substances 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 230000003071 parasitic effect Effects 0.000 description 3
- 239000003086 colorant Substances 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001802 infusion Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
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Abstract
The utility model relates to a microtubule detects technical field, especially relates to a water quality testing capacitanc liquid quantification device, including peristaltic pump, multi-way solenoid valve, ration ring and microtubule liquid detector, the peristaltic pump be connected with microtubule liquid detector through the pipeline, the microtubule that detects is fixed and is detected on microtubule liquid detector, microtubule liquid detector be connected with the ration ring, the ration ring be connected with multi-way solenoid valve through the pipeline, one side of multi-way solenoid valve be connected with the water sample subassembly, the opposite side of multi-way solenoid valve is connected with the reagent subassembly, an interface of multi-way solenoid valve is connected with detection module through the pipeline; the detection module is used for detecting. The advantage of this patent is through the effect that the device realized contactless, high accuracy, low cost, no waste.
Description
Technical Field
The utility model relates to a microtubule detects technical field, especially relates to a water quality testing capacitanc liquid proportioning device.
Background
In a measuring instrument, the liquid of a reaction often needs to be accurately quantified to ensure the accuracy of measurement, and the conventional quantitative ring technology usually adopts a photoelectric technology, a quantitative ring technology or a syringe pump technology.
The liquid level detection of the photoelectric technology is influenced by liquid color, pipe wall residue, pipe wall pollution and the like, the detection precision cannot meet the requirement, the judgment omission or the wrong judgment can be caused, the maintenance period is short, the maintenance cost and time are increased, and the detection on the semitransparent or capillary pipe cannot be carried out.
The traditional quantitative ring technology determines the quantitative amount of liquid through the volume between valves, the quantitative accuracy of the technology is high, but the liquid level condition needs to be judged by matching with other capacitance and photoelectric detection technologies or time, so that more reagents and a large amount of time are wasted in practical application.
The precision required for the processing and control of syringe pump technology is relatively high, resulting in relatively high manufacturing costs.
At present, no device which can realize low cost, no contact, long maintenance period and high precision exists in the solution of the quantitative problem of trace liquid.
Disclosure of Invention
The utility model aims to solve the problems of the prior microtube detection, and provides a microtube which has the advantages of low cost, no waste and no influence of color and impurities; the pipe wall is not contacted with contact liquid, so that the pipe wall residue or pipe wall pollution is avoided, and the maintenance period is long; a water quality detection capacitance type liquid quantifying device with convenient detection and high detection precision.
For the purpose of the utility model, the following technical scheme is adopted to realize:
a capacitance type liquid quantifying device for water quality detection is characterized by comprising a peristaltic pump, a multi-way electromagnetic valve, a quantifying ring and a micro-tube liquid detector, wherein the peristaltic pump is connected with the micro-tube liquid detector through a pipeline, a micro-tube to be detected is fixed on the micro-tube liquid detector for detection, the micro-tube liquid detector comprises a detection circuit board, a signal acquisition circuit, a power supply circuit, a single chip microcomputer circuit and a switching value output circuit, the single chip microcomputer circuit is connected with the signal acquisition circuit, the power supply circuit and the switching value output circuit, the signal acquisition circuit comprises an electrode plate and a resonance frequency circuit which are arranged on the detection circuit board, the micro-tube is attached to the electrode plate, the electrode plate is matched with the resonance frequency circuit, the liquid change in the micro-tube and the electrode plate form resonance frequency change, the resonance frequency change is acquired by the resonance, the single chip microcomputer circuit processes signals to obtain liquid signals, the liquid signals are output by the switching value output circuit, the microtube liquid detector is connected with the quantitative ring, the quantitative ring is connected with the multi-way electromagnetic valve through a pipeline, one side of the multi-way electromagnetic valve is connected with the water sample assembly, the other side of the multi-way electromagnetic valve is connected with the reagent assembly, and one interface of the multi-way electromagnetic valve is connected with the detection module through a pipeline; the detection module is used for detecting.
Preferably, the detection module comprises a first electromagnetic valve, a digestion colorimetric pool and a second electromagnetic valve; the digestion colorimetric pool is connected between the first electromagnetic valve and the second electromagnetic valve.
Preferably, the water sample assembly comprises an offline water sample, a standard sample, pure water and an online water sample, and the offline water sample, the standard sample, the pure water and the online water sample are sequentially connected to the left side of the multi-way electromagnetic valve from top to bottom.
Preferably, the reagent assembly comprises a first reagent and a second reagent, and the first reagent and the second reagent are respectively connected to the right side of the multi-way electromagnetic valve.
Preferably, the bottom of the left side of the multi-way electromagnetic valve is connected with cleaning waste liquid through a pipeline.
Preferably, the bottom of the right side of the multi-way electromagnetic valve is connected with reaction waste liquid through a pipeline.
Preferably, the signal acquisition circuit comprises three electrode plates, and the three electrode plates are positioned on the same straight line.
Preferably, the microtubule liquid detector further comprises a reset circuit, and the reset circuit is connected to the reset end of the singlechip circuit to provide a reset signal.
Preferably, the microtube liquid detector further comprises a watchdog circuit and an LED display circuit.
Preferably, the microtube liquid detector further comprises an RS485 output circuit.
By adopting the technical scheme, the capacitance type liquid quantifying device for water quality detection does not need to be in contact with liquid, so that the capacitance type liquid quantifying device is not influenced by colors and impurities, the tube wall is not polluted, and the detection precision is further improved while the cleaning and maintenance are not needed; high precision is achieved by the detector and low cost is also achieved; meanwhile, waste caused by detection through a large amount of reagents like a quantitative ring is not needed, and the effects of no waste and high-efficiency detection are achieved.
To sum up, the advantage of this patent is through the effect that the device realized contactless, high accuracy, low cost, no waste.
Drawings
Fig. 1 is a system block diagram of a water quality detection capacitive liquid quantifying device of the present invention.
FIG. 2 is a system block diagram of a microtube liquid detector.
Fig. 3 is a circuit diagram of a power supply circuit.
Fig. 4 is a circuit diagram of a single chip microcomputer circuit.
Fig. 5 is a circuit diagram of a signal acquisition circuit.
Fig. 6 is a circuit diagram of the switching value output circuit.
Fig. 7 is a circuit diagram of a watchdog circuit.
Fig. 8 is a circuit diagram of an RS485 output circuit.
Detailed Description
The following describes in detail an embodiment of the present invention with reference to the drawings.
As shown in fig. 1 and 2, a capacitance type liquid quantifying device for water quality detection comprises a peristaltic pump 101, a multi-way solenoid valve 102, a quantifying ring 103 and a micro-tube liquid detector, wherein the peristaltic pump 101 is connected with the micro-tube liquid detector through a pipeline, and is used for pumping and returning through the peristaltic pump 101. The microtubule liquid detector is connected with a quantitative ring 103, the quantitative ring 103 is connected with a multi-way electromagnetic valve 102 through a pipeline, one side of the multi-way electromagnetic valve 102 is connected with a water sample assembly, the water sample assembly comprises an offline water sample, a standard sample, pure water and an online water sample, and the offline water sample, the standard sample, the pure water and the online water sample are sequentially connected on the left side of the multi-way electromagnetic valve 102 from top to bottom. The bottom of the left side of the multi-way electromagnetic valve 102 is connected with cleaning waste liquid through a pipeline, so that the waste liquid is convenient to clean, and the reaction precision is improved. The other side of the multi-way solenoid valve 102 is connected to a reagent assembly, which includes a first reagent and a second reagent, and the first reagent and the second reagent are respectively connected to the right side of the multi-way solenoid valve 102. The bottom of the right side of the multi-way electromagnetic valve 102 is connected with reaction waste liquid through a pipeline, so that the reaction waste liquid is convenient to discharge.
One interface of the multi-way electromagnetic valve 102 is connected with a detection module 104 through a pipeline; the detection module 104 is used for detecting, and the detection module 104 comprises a first solenoid valve 1041, a digestion colorimetric pool 1042 and a second solenoid valve 1043; the digestion colorimetric pool 1042 is connected between the first electromagnetic valve 1041 and the second electromagnetic valve 1043, one end of the second electromagnetic valve 1043 is connected with air, and color comparison is carried out through the digestion colorimetric pool 105, so that further detection and comparison are carried out.
During operation, reagent that will detect is extracted through the microtubule liquid detector through peristaltic pump 101 corotation, carries out the capacitance detection to the liquid that passes through the electrode slice on the microtubule liquid detector, thereby judges the state of liquid in the pipeline to confirm the position of liquid in the pipeline through the slope of infusion speed and capacitance change, confirm to detect accurate back, send liquid back to through peristaltic pump 101 reversal, thereby carry out the reaction of reagent and water sample.
As shown in fig. 2, the microtubule liquid detector comprises a detection circuit board 1, a signal acquisition circuit 2, a power supply circuit 3, a single chip microcomputer circuit 4 and a switching value output circuit 5, wherein the single chip microcomputer circuit 4 is connected with the signal acquisition circuit 2, the power supply circuit 3 and the switching value output circuit 5. The signal acquisition circuit 2 comprises an electrode plate and a resonant frequency circuit which are arranged on the detection circuit board 1, the micro-tube is attached to the electrode plate, the electrode plate is matched with the resonant frequency circuit, the signal acquisition circuit 2 comprises three electrode plates, and the three electrode plates are positioned on the same straight line. The liquid change in the micro-tube and the electrode plate form resonance frequency change, the resonance frequency change is collected by the resonance frequency circuit and transmitted to the single chip circuit 4 by the signal collecting circuit 2, the single chip circuit 4 processes the signal to obtain a liquid signal, and the liquid signal is output by the switching value output circuit 5.
The circuit diagram of the power supply circuit is shown in fig. 3.
The circuit diagram of the single chip microcomputer circuit is shown in fig. 4.
The circuit diagram of the signal acquisition circuit is shown in fig. 5. The liquid change in the micro-tube and the electrode plate form resonance frequency change, the resonance frequency change is collected by the resonance frequency circuit and transmitted to the single chip circuit 4 by the signal collecting circuit 2, the single chip circuit 4 processes the signal to obtain a capacitor, and the capacitor is output by the switching value output circuit 5. A circuit diagram of the switching value output circuit is shown in fig. 6.
485 is a digital signal, switching value is a switching signal, 485 is used for a system, determines the state of the system and performs self-adjustment, the switching value signal is mainly used for informing or controlling actions after judging that liquid exists, a liquid level detection plate can be communicated with the system and confirms the state of the liquid level, and the automatic judgment and adjustment can be performed on the substrate through an upper computer.
The detector also comprises a reset circuit, the reset circuit is connected to the reset end of the singlechip circuit to provide a reset signal, the reset circuit adopts a reset chip CAT706RVI, the detector also comprises a watchdog circuit, and the circuit diagram of the reset circuit and the watchdog circuit is shown in figure 7.
The detector further comprises an LED display circuit, the LED display circuit is connected to the single chip microcomputer circuit 4, and after the single chip microcomputer circuit 4 processes signals to obtain the capacitor, the LED display circuit displays a bright lamp.
The detector also comprises an RS485 output circuit, and the circuit diagram of the RS485 output circuit is shown in figure 8.
The utility model discloses a resonance frequency of inductance and electric capacity is measured to mode of resonance measures the size of outside electric capacity, according to the formula:
the resonance frequency is calculated, and the relation between the AD value converted by the internal sensor channel and the resonance frequency is as follows:
wherein: DATAX is the AD conversion value of channel x
FREFx is the reference frequency of channel X
Fsensorx is the resonant frequency detected by the sensor
At present, the default setting of the reference frequency in the liquid level meter is 50Mhz
From the above equation, it can be concluded that the reference channel 1-related parameter if there is ideally no parasitic capacitance is:
fsensor1＝6.5Mhz，DATA1＝35076561
the parameters of the measurement channel 0 are also the same, but the distance between the measurement channel 0 and ground is different from the distance between the reference channel 1 and ground at the time of design, and therefore the parasitic capacitance of the circuit board is also different, so that the DATA1-DATA0 are the inherent parasitic capacitance difference of the circuit board.
When an object is placed in the resonant magnetic field, the resonant frequency of the measurement channel changes, so that DOTA1 changes, so that DOTA1-DOTA0 changes, and 0.01Mhz can be detected at minimum, namely the minimum detection resolution is 0.7 pF.
The device does not need to be contacted with liquid, so that the device is not influenced by colors and impurities, the tube wall is not polluted, and the detection precision is further improved while cleaning and maintenance are not needed; high precision is achieved by the detector and low cost is also achieved; meanwhile, waste caused by detection through a large amount of reagents like a quantitative ring is not needed, and the effects of no waste and high-efficiency detection are achieved.
To sum up, the advantage of this patent is through the effect that this detector realized contactless, high accuracy, low cost, no waste.
Claims (10)
1. A capacitance type liquid quantifying device for water quality detection is characterized by comprising a peristaltic pump (101), a multi-way electromagnetic valve (102), a quantifying ring (103) and a microtubule liquid detector, wherein the peristaltic pump (101) is connected with the microtubule liquid detector through a pipeline, a microtubule to be detected is fixed on the microtubule liquid detector for detection, the microtubule liquid detector comprises a detection circuit board (1), a signal acquisition circuit (2), a power circuit (3), a singlechip circuit (4) and a switching value output circuit (5), the singlechip circuit is connected with the signal acquisition circuit (2), the power circuit (3) and the switching value output circuit (5), the signal acquisition circuit (2) comprises an electrode plate and a resonant frequency circuit which are arranged on the detection circuit board (1), the microtubule and the electrode plate are attached, and the electrode plate is matched with the resonant frequency circuit, the liquid change in the microtube and the electrode plate form resonance frequency change, the resonance frequency change is collected by the resonance frequency circuit and is transmitted to the single chip circuit (4) by the signal collecting circuit (2), the single chip circuit (4) processes the signal to obtain a liquid signal, the liquid signal is output by the switching value output circuit (5), the microtube liquid detector is connected with the quantitative ring (103), the quantitative ring (103) is connected with the multi-way electromagnetic valve (102) through a pipeline, one side of the multi-way electromagnetic valve (102) is connected with a water sample assembly, the other side of the multi-way electromagnetic valve (102) is connected with a reagent assembly, and one interface of the multi-way electromagnetic valve (102) is connected with a detection module (104) through a pipeline; the detection module (104) is used for detecting water quality.
2. A water quality detection capacitive liquid quantifying device according to claim 1, wherein the detection module (104) comprises a first solenoid valve (1041), a digestion colorimetric pool (1042) and a second solenoid valve (1043); the digestion colorimetric pool (1042) is connected between the first electromagnetic valve (1041) and the second electromagnetic valve (1043).
3. The water quality detection capacitive liquid quantifying device as recited in claim 1, wherein the water sample assembly comprises an offline water sample, a standard sample, pure water and an online water sample, and the offline water sample, the standard sample, the pure water and the online water sample are sequentially connected to the left side of the multi-way electromagnetic valve (102) from top to bottom.
4. The capacitive liquid quantifying device for water quality detection according to claim 1, wherein the reagent assembly comprises a first reagent and a second reagent, and the first reagent and the second reagent are respectively connected to the right side of the multi-way solenoid valve (102).
5. The capacitive liquid quantifying device for water quality detection according to claim 1, wherein the bottom of the left side of the multi-way electromagnetic valve (102) is connected with a cleaning waste liquid through a pipeline.
6. The capacitive liquid quantifying device for water quality detection according to claim 1, wherein the bottom of the right side of the multi-way electromagnetic valve (102) is connected with reaction waste liquid through a pipeline.
7. A water quality detection capacitance type liquid quantifying device as claimed in claim 1, wherein the signal acquisition circuit (2) comprises three electrode plates (21), and the three electrode plates are positioned on the same straight line.
8. The water quality detection capacitance type liquid quantifying device as claimed in claim 1, wherein the microtube liquid detector further comprises a reset circuit, and the reset circuit is connected to the reset end of the singlechip circuit to provide a reset signal.
9. The capacitive liquid quantifying device for water quality detection according to claim 1, wherein the micro-tube liquid detector further comprises a watchdog circuit and an LED display circuit.
10. The capacitive liquid quantifying device for water quality detection according to claim 1, wherein the micro-tube liquid detector further comprises an RS485 output circuit.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201922465735.2U CN211234611U (en) | 2019-12-31 | 2019-12-31 | Water quality testing capacitanc liquid proportioning device |
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| CN201922465735.2U CN211234611U (en) | 2019-12-31 | 2019-12-31 | Water quality testing capacitanc liquid proportioning device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111044116A (en) * | 2019-12-31 | 2020-04-21 | 浙江微兰环境科技有限公司 | A capacitive liquid quantitative detection equipment |
| CN114247414A (en) * | 2020-09-24 | 2022-03-29 | 运泽惠通(北京)技术有限公司 | Device for quantitatively treating liquid |
| CN115903054A (en) * | 2022-11-22 | 2023-04-04 | 成都爱兴生物科技有限公司 | Reagent strip reagent leakage detection device |
-
2019
- 2019-12-31 CN CN201922465735.2U patent/CN211234611U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111044116A (en) * | 2019-12-31 | 2020-04-21 | 浙江微兰环境科技有限公司 | A capacitive liquid quantitative detection equipment |
| CN114247414A (en) * | 2020-09-24 | 2022-03-29 | 运泽惠通(北京)技术有限公司 | Device for quantitatively treating liquid |
| CN115903054A (en) * | 2022-11-22 | 2023-04-04 | 成都爱兴生物科技有限公司 | Reagent strip reagent leakage detection device |
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