CN212058990U - Surface water quality treatment monitoring system - Google Patents
Surface water quality treatment monitoring system Download PDFInfo
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- CN212058990U CN212058990U CN202021131795.7U CN202021131795U CN212058990U CN 212058990 U CN212058990 U CN 212058990U CN 202021131795 U CN202021131795 U CN 202021131795U CN 212058990 U CN212058990 U CN 212058990U
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Abstract
The utility model discloses a surface water quality of water handles monitoring system, including water level monitoring unit, wireless transmission unit and backstage surveillance center, water level monitoring unit is including the infrared level sensor who is used for detecting effluent water sump sewage volume, infrared level sensor's output signal sends into temperature drift suppression stabilizing circuit and filtering shaping circuit and handles, temperature drift suppression stabilizing circuit promotes the linearity of detecting signal output, and restrain the drift within lower limit, effectively avoid external temperature field change to cause the liquid level detection signal temperature drift imbalance, and carry out the amplitude stability to the output signal of fortune ware AR1 through voltage stabilizing module, promote the stability of liquid level detection signal amplification output; the filtering and shaping circuit utilizes the LC filtering principle to reduce noise of output signals of the voltage stabilizing module, high-frequency clutter interference brought to detection signals by external light environment factors is well eliminated, and the accuracy of water level detection is improved.
Description
Technical Field
The utility model relates to a surface water treatment facilities technical field especially relates to a surface water quality treatment monitoring system.
Background
With the acceleration of urbanization and industrialization in China, the gap of water resource requirements is increasing day by day. Under such a background, the water treatment industry becomes a new industry, and is in the same important position with the industries of tap water production, water supply, drainage and reclaimed water reuse at present. Surface water sewage treatment is a process of purifying surface water so as to enable the surface water sewage to meet the water quality requirement of being discharged into a certain water body or being reused, and is beneficial to cyclic utilization of the sewage and water resource saving. In the water quality purification treatment process, the water level in the sewage tank needs to be monitored, and the water level information is transmitted to the background monitoring center in real time by utilizing a wireless transmission technology, so that the remote real-time monitoring of the sewage quantity of the station is realized. Adopt infrared level sensor can realize real-time supervision and data acquisition to the water level, be the important component that realizes intelligent management, however infrared level sensor receives external disturbance easily in the course of the work, for example site environment factor, pressure sensitive element's nonlinear factor give the systematic error that water level monitoring brought, and the temperature field also can arouse the change of component electrical parameter or produce the thermoelectric force to make liquid level detection signal the temperature drift imbalance appear, lead to the water level testing result inaccurate.
So the utility model provides a new scheme to solve the problem.
SUMMERY OF THE UTILITY MODEL
In view of the above situation, in order to overcome the defects of the prior art, the present invention aims to provide a surface water quality monitoring system.
The technical scheme for solving the problem is as follows: a surface water quality treatment monitoring system comprises a water level monitoring unit, a wireless transmission unit and a background monitoring center, wherein the water level monitoring unit comprises an infrared liquid level sensor for detecting sewage amount of a sewage pool, an output signal of the infrared liquid level sensor is sent to a temperature drift suppression stabilizing circuit and a filtering shaping circuit for processing, the temperature drift suppression circuit comprises an operational amplifier AR1, the non-inverting input end of the operational amplifier AR1 is connected with one end of a resistor R2 and a capacitor C2, the other end of the resistor R2 is grounded, the other end of the capacitor C2 is connected with the signal output end of the infrared liquid level sensor and is grounded through a resistor R1 and a capacitor C1 which are connected in parallel, the inverting input end of the operational amplifier AR1 is connected with one end of a resistor R3 and a capacitor C3, the other end of the resistor R3 is connected with one end of a resistor R4 and one end of a thermistor RT1, the output end of the operational amplifier AR1 is connected with the other ends of a capacitor C, the output signal of the operational amplifier AR1 is sent into the filter shaping circuit after being processed by the voltage stabilizing module, the output signal of the filter shaping circuit is sent into the microprocessor to calculate the real-time water level, and the microprocessor remotely transmits the real-time water level data to the background monitoring center through the wireless transmission unit.
Preferably, the voltage stabilizing module includes a transistor VT1, a collector of the transistor VT1 is connected to an output terminal of the operational amplifier AR1, an emitter of the transistor VT1 is connected to an inverting input terminal of the operational amplifier AR2, one end of the resistor R6 and an input terminal of the filter shaping circuit through a resistor R5, a non-inverting input terminal of the operational amplifier AR2 is connected to a cathode of the voltage stabilizing diode DZ1, and is connected to a collector of the transistor VT1 through a varistor RP1, and an anode of the voltage stabilizing diode DZ1 and the other end of the resistor R6 are grounded in parallel.
Preferably, the filter shaping circuit includes an inductor L1, one end of the inductor L1 is connected to the output end of the voltage stabilizing module, the other end of the inductor L1 is grounded through a capacitor C4 and is connected to the non-inverting input end of the operational amplifier AR3 through a capacitor C5, the inverting input end of the operational amplifier AR3 is connected to the +5V power supply through a resistor R7 and is grounded through a resistor R8, and the output end of the operational amplifier AR3 is connected to the microprocessor.
Preferably, the microprocessor is an STC89C52 single chip microcomputer.
Preferably, the wireless transmission unit is a WIFI module, and the WIFI module is connected with the STC89C52 single chip microcomputer through a serial port.
Through the technical scheme, the beneficial effects of the utility model are that:
1. the utility model discloses an infrared level sensor real-time detection sewage water level in the sewage pond, its detected signal send into temperature at first and float and restrain the stabilizing circuit and handle, temperature floats and restrains the stabilizing circuit and adopts fortune to put ware AR1 and enlarge the liquid level detected signal, and form resistance-capacitance feedback network and compensate fortune and put the imbalance voltage in the amplification process, promote the linearity that the detected signal exported, and restrain the drift within lower limit, effectively avoid the ambient temperature field change to cause the liquid level detected signal to appear temperature to float the imbalance;
2. the amplitude of an output signal of the operational amplifier AR1 is stabilized through the voltage stabilizing module, and the stability of the amplified output of the liquid level detection signal is improved;
3. the filtering and shaping circuit utilizes the LC filtering principle to reduce noise of output signals of the voltage stabilizing module, high-frequency clutter interference brought to detection signals by external light environment factors is well eliminated, and the accuracy of water level detection is improved.
Drawings
Fig. 1 is a schematic diagram of the temperature drift suppression stabilizing circuit of the present invention.
Fig. 2 is a schematic diagram of the filter shaping circuit of the present invention.
Detailed Description
The foregoing and other technical matters, features and effects of the present invention will be apparent from the following detailed description of the embodiments, which is to be read in connection with the accompanying drawings 1 to 2. The structural contents mentioned in the following embodiments are all referred to the attached drawings of the specification.
Exemplary embodiments of the present invention will be described below with reference to the accompanying drawings.
A surface water quality treatment monitoring system comprises a water level monitoring unit, a wireless transmission unit and a background monitoring center. The water level monitoring unit comprises an infrared liquid level sensor for detecting the sewage amount of the sewage pool, and an output signal of the infrared liquid level sensor is sent into the temperature drift inhibition stabilizing circuit and the filtering and shaping circuit for processing. The output signal of the filter shaping circuit is sent to a microprocessor to calculate the real-time water level, and the microprocessor remotely transmits the real-time water level data to a background monitoring center through a wireless transmission unit. During specific setting, the microprocessor selects the STC89C52 single chip microcomputer, the wireless transmission unit is the WIFI module, and the WIFI module is connected with the STC89C52 single chip microcomputer through a serial port.
In order to eliminate the interference of external interference on the infrared liquid level sensor, the output signal of the infrared liquid level sensor is firstly sent to a temperature drift suppression stabilizing circuit for processing. As shown in fig. 1, the temperature drift suppression stabilizing circuit includes an operational amplifier AR1, a non-inverting input terminal of the operational amplifier AR1 is connected to one end of a resistor R2 and a capacitor C2, the other end of the resistor R2 is grounded, the other end of the capacitor C2 is connected to a signal output terminal of the infrared liquid level sensor and is grounded through a resistor R1 and a capacitor C1 which are connected in parallel, an inverting input terminal of the operational amplifier AR1 is connected to one end of a resistor R3 and a capacitor C3, the other end of the resistor R3 is connected to one end of a resistor R4 and one end of a thermistor RT1, and an output terminal of the operational amplifier AR1 is connected to the other end of the capacitor C3, the resistor R. The output signal of the infrared liquid level sensor is firstly sent into an RC filter network formed by resistors R1 and R2 and capacitors C1 and C2 for noise reduction, and then sent into an operational amplifier AR1 for amplification, the resistors R3 and R4, the thermistor RT1 and the capacitor C3 form a resistance-capacitance feedback network at the feedback end of the operational amplifier AR1 for compensation of operational amplifier offset voltage, the drift amount of the amplified signal of the operational amplifier AR1 generated due to the change of a temperature field falls on a coupling capacitor C2, and the capacitor C2 is used for compensation of the signal, so that the further amplification of the amplified signal in a rear-stage circuit is avoided, and the linearity of the output of the detection signal is improved. The thermistor RT1 can adjust the feedback end resistance of the operational amplifier AR2 along with the change of temperature, for example, when the temperature field is heated up, the total resistance of the resistor R4 and the thermistor RT1 is reduced according to the parallel principle of the resistors, and the negative feedback of the operational amplifier AR1 is enhanced, so that the signal is well stabilized, the drift is restrained within a lower limit, and the temperature drift imbalance of the liquid level detection signal caused by the change of the external temperature field is effectively avoided.
The output signal of the operational amplifier AR1 is sent to the voltage stabilizing module for amplitude stabilization, the specific structure of the voltage stabilizing module comprises a triode VT1, the collector of the triode VT1 is connected with the output end of the operational amplifier AR1, the emitter of the triode VT1 is connected with the inverting input end of the operational amplifier AR2, one end of the resistor R6 and the input end of the filter shaping circuit through a resistor R5, the non-inverting input end of the operational amplifier AR2 is connected with the cathode of a voltage stabilizing diode DZ1 and is connected with the collector of the triode VT1 through a rheostat RP1, and the anode of the voltage stabilizing diode DZ1 and the other end of the resistor R6 are grounded in parallel. One path of an output signal of the operational amplifier AR1 is shunted by the rheostat RP1 and then is sent to the inverting input end of the operational amplifier AR2 to serve as comparison voltage, and the voltage stabilizing diode DZ1 plays a role in stabilizing the comparison voltage; the other signal is sent to the triode VT1 to be amplified, the operational amplifier AR2 samples the emitter output signal of the triode VT1, the sampling voltage is sent to the inverting input end of the operational amplifier AR2 to be amplified, the output voltage of the operational amplifier AR2, namely the base potential of the triode VT1, is reduced (increased), and the output voltage is reduced (increased) inevitably because the circuit adopts an emitter output mode, so that the output voltage of the voltage stabilizing module is stabilized, and the stability of the amplification output of the liquid level detection signal is improved.
The output signal of the voltage stabilizing module is sent to a filter shaping circuit for further processing, as shown in fig. 2, the filter shaping circuit comprises an inductor L1, one end of the inductor L1 is connected with the output end of the voltage stabilizing module, the other end of the inductor L1 is grounded through a capacitor C4 and is connected with the non-inverting input end of an operational amplifier AR3 through a capacitor C5, the inverting input end of the operational amplifier AR3 is connected with a +5V power supply through a resistor R7 and is grounded through a resistor R8, and the output end of the operational amplifier AR3 is connected with a microprocessor. The inductor L1 and the capacitor C4 form LC filtering to reduce noise of output signals of the voltage stabilizing module, high-frequency clutter interference caused by external light environment factors to detection signals is well eliminated, and accuracy of liquid level detection is improved. The LC filtered signals are coupled by a capacitor C5 and then sent into an operational amplifier AR3 for comparison and shaping, and therefore standard 0-5V pulse signals required by an STC89C52 single chip microcomputer are obtained.
The utility model discloses when specifically using, the sewage water level in infrared level sensor real-time detection sewage pond, its detected signal at first sends into the temperature and floats to restrain and handle in the stabilizing circuit, the temperature floats to restrain and adopts fortune to put ware AR1 and enlarge the liquid level detection signal, and form resistance-capacitance feedback network and compensate to fortune offset voltage at the amplification process, promote the linearity of detecting signal output, and restrain the drift within lower limit, effectively avoid the ambient temperature field change to cause the liquid level detection signal temperature to float the imbalance to appear. Then, the output signal of the operational amplifier AR1 is subjected to amplitude stabilization through the voltage stabilizing module, and the stability of liquid level detection signal amplification output is improved. The filtering and shaping circuit utilizes the LC filtering principle to reduce noise of output signals of the voltage stabilizing module, high-frequency clutter interference brought to detection signals by external light environment factors is well eliminated, and the accuracy of water level detection is improved. And finally, after the detection signals are compared and shaped by an operation device AR3, the detection signals are sent into an STC89C52 single chip microcomputer, and calculated real-time water level data in the STC89C52 single chip microcomputer are remotely transmitted to a background monitoring center through a WIFI module, so that the water quality treatment process of surface water is monitored in real time.
The above description is provided for further details of the present invention with reference to the specific embodiments, which should not be construed as limiting the present invention; to the utility model discloses affiliated and relevant technical field's technical personnel are based on the utility model discloses under the technical scheme thinking prerequisite, the extension of doing and the replacement of operating method, data all should fall within the utility model discloses within the protection scope.
Claims (5)
1. The utility model provides a surface water quality treatment monitoring system, includes water level monitoring unit, wireless transmission unit and backstage surveillance center, its characterized in that: the water level monitoring unit comprises an infrared liquid level sensor for detecting the sewage amount of a sewage pool, an output signal of the infrared liquid level sensor is sent into a temperature drift suppression stabilizing circuit and a filtering and shaping circuit for processing, the temperature drift suppression circuit comprises an operational amplifier AR1, the non-inverting input end of the operational amplifier AR1 is connected with one end of a resistor R2 and one end of a capacitor C2, the other end of a resistor R2 is grounded, the other end of the capacitor C2 is connected with the signal output end of the infrared liquid level sensor and is grounded through a resistor R1 and a capacitor C1 which are connected in parallel, the inverting input end of the operational amplifier AR1 is connected with one end of a resistor R3 and one end of a capacitor C3, the other end of the resistor R3 is connected with one end of a resistor R4 and one end of a thermistor RT1, the output end of the operational amplifier AR1 is connected with the other end of a capacitor C3, a resistor R4 and a thermistor RT1, an output signal of the operational amplifier AR1 is sent into the, and the microprocessor remotely transmits the real-time water level data to the background monitoring center through the wireless transmission unit.
2. The surface water quality treatment monitoring system of claim 1, characterized in that: the voltage stabilizing module comprises a triode VT1, the collector of the triode VT1 is connected with the output end of an operational amplifier AR1, the emitter of the triode VT1 is connected with the inverting input end of the operational amplifier AR2, one end of a resistor R6 and the input end of the filter shaping circuit through a resistor R5, the non-inverting input end of the operational amplifier AR2 is connected with the cathode of a voltage stabilizing diode DZ1 and is connected with the collector of the triode VT1 through a rheostat RP1, and the anode of the voltage stabilizing diode DZ1 and the other end of the resistor R6 are grounded in parallel.
3. The surface water quality treatment monitoring system of claim 2, characterized in that: the filter shaping circuit comprises an inductor L1, one end of an inductor L1 is connected with the output end of the voltage stabilizing module, the other end of the inductor L1 is grounded through a capacitor C4 and is connected with the non-inverting input end of an operational amplifier AR3 through a capacitor C5, the inverting input end of the operational amplifier AR3 is connected with a +5V power supply through a resistor R7 and is grounded through a resistor R8, and the output end of the operational amplifier AR3 is connected with the microprocessor.
4. The surface water quality treatment monitoring system of claim 1, characterized in that: the microprocessor adopts an STC89C52 singlechip.
5. The surface water quality treatment monitoring system of claim 4, characterized in that: the wireless transmission unit is a WIFI module, and the WIFI module is connected with the STC89C52 single chip microcomputer through a serial port.
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| CN202021131795.7U CN212058990U (en) | 2020-06-18 | 2020-06-18 | Surface water quality treatment monitoring system |
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| CN202021131795.7U CN212058990U (en) | 2020-06-18 | 2020-06-18 | Surface water quality treatment monitoring system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113606824A (en) * | 2021-09-17 | 2021-11-05 | 安徽江淮汽车集团股份有限公司 | Refrigerant receiver drier |
| CN114397429A (en) * | 2022-01-19 | 2022-04-26 | 江苏环保产业技术研究院股份公司 | Soil data acquisition equipment and method for environmental protection monitoring |
| CN114812764A (en) * | 2021-11-16 | 2022-07-29 | 河南省淇花食用油有限公司 | Oil quantity metering system for filling edible oil |
-
2020
- 2020-06-18 CN CN202021131795.7U patent/CN212058990U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113606824A (en) * | 2021-09-17 | 2021-11-05 | 安徽江淮汽车集团股份有限公司 | Refrigerant receiver drier |
| CN113606824B (en) * | 2021-09-17 | 2022-04-26 | 安徽江淮汽车集团股份有限公司 | Refrigerant receiver drier |
| CN114812764A (en) * | 2021-11-16 | 2022-07-29 | 河南省淇花食用油有限公司 | Oil quantity metering system for filling edible oil |
| CN114812764B (en) * | 2021-11-16 | 2024-04-30 | 河南省淇花食用油有限公司 | Oil quantity metering system for filling edible oil |
| CN114397429A (en) * | 2022-01-19 | 2022-04-26 | 江苏环保产业技术研究院股份公司 | Soil data acquisition equipment and method for environmental protection monitoring |
| CN114397429B (en) * | 2022-01-19 | 2024-05-14 | 江苏环保产业技术研究院股份公司 | Soil data acquisition equipment and method for environmental protection monitoring |
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