CN117664651A - Sampling system and method for automatically sampling urban sewage - Google Patents
Sampling system and method for automatically sampling urban sewage Download PDFInfo
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- CN117664651A CN117664651A CN202311650533.XA CN202311650533A CN117664651A CN 117664651 A CN117664651 A CN 117664651A CN 202311650533 A CN202311650533 A CN 202311650533A CN 117664651 A CN117664651 A CN 117664651A
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- 238000005070 sampling Methods 0.000 title claims abstract description 257
- 239000010865 sewage Substances 0.000 title claims abstract description 107
- 238000000034 method Methods 0.000 title claims abstract description 47
- 230000005540 biological transmission Effects 0.000 claims abstract description 26
- 238000005057 refrigeration Methods 0.000 claims abstract description 26
- 239000007788 liquid Substances 0.000 claims description 60
- 230000006870 function Effects 0.000 claims description 23
- 238000010438 heat treatment Methods 0.000 claims description 20
- 239000004065 semiconductor Substances 0.000 claims description 15
- 238000009413 insulation Methods 0.000 claims description 13
- 238000000605 extraction Methods 0.000 claims description 12
- 238000005303 weighing Methods 0.000 claims description 11
- 238000002347 injection Methods 0.000 claims description 10
- 239000007924 injection Substances 0.000 claims description 10
- 238000007710 freezing Methods 0.000 claims description 4
- 230000008014 freezing Effects 0.000 claims description 4
- 238000005259 measurement Methods 0.000 claims description 4
- 238000001816 cooling Methods 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 238000012544 monitoring process Methods 0.000 description 5
- 238000012986 modification Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 238000004321 preservation Methods 0.000 description 4
- 241000711573 Coronaviridae Species 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000004075 alteration Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000002352 surface water Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/20—Controlling water pollution; Waste water treatment
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Abstract
The invention discloses a sampling system for automatically sampling urban sewage, which consists of a sampling subsystem, a metering and sampling subsystem, a refrigerating subsystem and a control subsystem; the sampling subsystem collects and conveys a proper amount of sewage samples to the metering and sampling subsystem while being subjected to constant temperature heat tracing, and redundant sewage samples are discharged from an overflow part of the sampling subsystem; the metering and sampling subsystem is connected with the sampling subsystem and is used for metering the sewage sample collected and conveyed by the sampling subsystem and sending the metered sewage sample into the refrigerating subsystem; the refrigerating subsystem is connected with the metering and sample-feeding subsystem and is used for refrigerating and storing the metered sewage sample; the control subsystem is used for controlling a sampling process, a metering and sample feeding process and a refrigerating process; controlling the refrigeration process includes controlling a refrigeration temperature; the control subsystem is used for wireless remote transmission of the sampling state data. Corresponding methods, electronic devices, and computer-readable storage media are also disclosed.
Description
Technical Field
The invention relates to the technical field of water sample sampling, in particular to a sampling system and a sampling method for automatic sampling of urban sewage.
Background
Most samplers in the prior art are water quality samplers for pollution source water quality monitoring or surface water quality monitoring, all need to be placed in an analysis cabin which needs to have certain conditions to work, and meanwhile, the sampling flow, the sampling mode and the functions cannot well meet the sample collection requirements of urban sewage new coronavirus monitoring. Therefore, there is a need to develop a sampling system and method for automatic sampling of municipal sewage, which can be used to provide mixed sewage samples, instantaneous sewage samples, etc. for detection of municipal sewage coronavirus, environmental water quality monitoring, etc.
Disclosure of Invention
The invention aims to provide a sampling system and a sampling method for automatically sampling urban sewage, which can provide mixed sewage samples, instantaneous sewage samples and the like for urban sewage coronavirus detection, environmental water quality monitoring and the like, and are simpler and more practical.
The first aspect of the invention provides a sampling system for automatically sampling urban sewage, which consists of a sampling subsystem, a metering and sampling subsystem, a refrigerating subsystem and a control subsystem; wherein,
the sampling subsystem collects and conveys a proper amount of sewage samples to the metering and sampling subsystem while being subjected to constant temperature heat tracing, and redundant sewage samples are discharged from an overflow part of the sampling subsystem;
the metering and sampling subsystem is connected with the sampling subsystem and is used for metering the sewage sample collected and conveyed by the sampling subsystem and conveying the metered sewage sample to the refrigerating subsystem;
the refrigerating subsystem is connected with the metering and sampling subsystem and is used for refrigerating and storing the metered sewage sample;
the control subsystem is respectively connected with the sampling subsystem, the metering and sampling subsystem and the refrigerating subsystem and is used for controlling a sampling process, a metering and sampling process and a refrigerating process; the control of the sampling flow comprises the collection and logic judgment of signals of a sampling sensor, an overflow sensor, a high liquid level sensor and a low liquid level sensor adopted in the sample extraction; the control of the metering and sampling flow comprises the acquisition and logic judgment of signals of a sampling sensor, an overflow sensor, a high liquid level sensor and a low liquid level sensor adopted in the metering and sampling of samples; the control of the refrigeration process comprises the control of the refrigeration temperature; the control subsystem is also used for carrying out wireless remote transmission on the sampling state data.
Preferably, the sampling system further comprises a rainproof cabinet body (15), and the sampling subsystem, the metering and sample introduction subsystem, the refrigeration subsystem and the control subsystem are integrally arranged in the rainproof cabinet body (15); the rain-proof cabinet body (15) is integrally rain-proof and dust-proof, and the whole set of device can be directly used outdoors; the rainproof cabinet body (15) is provided with an electronic door lock, and a door opening and closing signal of the electronic door lock is connected to the control subsystem.
Preferably, the sampling subsystem is composed of a self-constant temperature heat tracing belt (1), a sampling pipe (2), a sampling sensor (3), a sampling pump (4), an overflow pipe (5) and an overflow sensor (6), so as to collect and convey sewage samples; the sampling tube (2), the sampling sensor (3) and the sampling pump (4) are connected in series and enter an inlet section of a metering cup (8) of the metering and sampling subsystem; the overflow pipe (5) is connected in series with the overflow sensor (6) and enters the outlet section of the metering cup (8) of the metering and sample injection subsystem;
the self-constant temperature heat tracing device is characterized in that the self-constant temperature heat tracing device (1) is bound with a sampling pipe (2), an overflow pipe (5) and a metering cup (8) of the metering and sample injection subsystem, and the self-constant temperature heat tracing device is started when the ambient temperature is lower than 0 ℃.
Preferably, the metering and sampling subsystem is composed of a high liquid level sensor (7), a metering cup (8), a low liquid level sensor (9), a sampling valve (10) and a metering tube (17), wherein the metering tube (17) stretches into the metering cup (8) to a certain height, and the excessive liquid is pumped out to realize metering under the condition that the sampling pump (4) is turned upside down.
Preferably, the refrigeration subsystem consists of a sample insulation box (11), a fan (12), a semiconductor refrigerating/heating sheet (13), a temperature sensor (16), a weighing sensor (14) and a sampling bottle (15); the temperature sensor (16), the weighing sensor (14) and the sampling bottle (15) are arranged inside the sample insulation box (11), and the fans (12) and the semiconductor refrigerating/heating sheets (13) are multiple and are respectively arranged on the side wall of the sample insulation box (11); the refrigerating temperature of the sample insulation box (11) is adjusted by the positive connection or the reverse connection of the power supply of the semiconductor refrigerating/heating sheet (13).
Preferably, the control subsystem consists of an alternating current 220V-direct current 24V power supply module (301), a temperature control module (302), a data transmission module (303), a controller (304), a sensor signal acquisition module (305), a driving module (306) and a self-constant temperature heat tracing interface module (307);
the alternating current 220V is respectively connected with the self-constant temperature heat tracing interface module (307) and the input of the alternating current 220V-direct current 24V power module (301), the output of the alternating current 220V-direct current 24V power module (301) is connected with the input of the temperature control module (302) and the input of the controller (304), and the output of the controller (304) is respectively connected with the data transmission module (303), the sensor signal acquisition module (305) and the driving module (306).
Preferably, the data transmission module (303) comprises a Wi F i function and a wireless data transmission function, and the short-distance mobile phone is connected with the sampling system for automatically sampling the urban sewage through the Wi F i function and performs parameter setting on the sampling system; the driving module (306) controls the sampling pump (4) and the sample injection valve (10) to realize sample collection, metering and cold storage; the sampling state and the historical data of the sampling system for automatically sampling the urban sewage are remotely and wirelessly transmitted through the wireless data transmission function; the sensor signal acquisition module (305) is used for reading signals of the low liquid level sensor (9), the high liquid level sensor (7) and the weighing sensor (14), and the controller judges signals and realizes signal feedback of a sample acquisition state; the temperature control is used for realizing the temperature control of the sampling pipeline and the cold storage of the sample incubator.
A second aspect of the present invention is to provide a sampling method for automatic sampling of municipal sewage, comprising:
s1, automatically sampling urban sewage in a first sampling period, wherein the automatic sampling comprises the following steps:
s11, urban sewage sample extraction, which comprises the following steps:
(1) The controller (304) receives sampling setting parameters from the short-distance mobile phone terminal app or the remote control system through a Wi F i function or a wireless data transmission function of the data transmission module (303);
(2) According to the sampling setting parameters, the controller (304) controls the driving module (306) to drive the sampling pump (4) in the flow path to realize the extraction of the sewage sample; the sampling pump (4) rotates positively, a sewage sample enters the metering cup (8) through the sampling pipe (2), and an excessive sample flows out through the overflow pipe (5) to realize sample extraction;
(3) In the process of extracting the sewage sample, liquid level signals of the sampling sensor (3), the overflow sensor (6), the high liquid level sensor (7) and the low liquid level sensor (9) are transmitted to a sensor signal acquisition module (305) in real time, and a controller (304) carries out logic judgment according to the liquid level signals so as to judge whether the extracting operation state of the sewage sample is normal or not;
s12, urban sewage sample metering, which comprises the following steps:
(1) After the urban sewage sample is extracted, the sampling pump (4) reversely rotates to extract and discharge the surplus sample in the overflow pipe (5) and the part above the height of the metering pipe (17) in the metering cup (8), so that the urban sewage sample is metered;
(2) In the urban sewage sample metering process, liquid level signals of the sampling sensor (3), the overflow sensor (6), the high liquid level sensor (7) and the low liquid level sensor (9) are transmitted to a sensor signal acquisition module (305) in real time, and a controller (304) carries out logic judgment according to the liquid level signals so as to judge whether the sewage sample metering operation state is normal or not;
s13, sampling of a municipal sewage sample, comprising:
(1) After the measurement of the sewage sample is finished, a sampling valve (10) is opened, and the sample in the measuring cup (8) is discharged into a sampling bottle (15) in a sample insulation box (11) to realize the sampling of the urban sewage sample;
(2) In the sampling process of the urban sewage sample, the liquid level signal of the low liquid level sensor (9) and the signal of the weighing sensor (14) are transmitted to a sensor signal acquisition module (305) in real time, and a controller (304) carries out logic judgment according to the liquid level signal so as to judge whether the sampling operation state of the sewage sample is normal or not;
ending a sampling period after sample injection is ended;
s2, repeating the step S1 in N periods by the device according to parameter setting so as to acquire a circulating sample;
s3, transmitting temperature signals in the sample incubator (11) to a temperature control module (302) in real time by a temperature sensor (16), and controlling the refrigeration or heating mode of the semiconductor refrigeration/heating sheet (13) by the temperature control module (302) based on the set refrigeration temperature and the current real-time temperature in a comparison mode to realize the constant-temperature refrigeration function of the urban sewage sample in the sampling bottle (15);
s4, a sensor signal acquisition module (305) acquires door lock switch signals of the rainproof cabinet body (18) in real time, and monitors sampling products in real time; when the ambient temperature is lower than 0 ℃, the self-constant temperature heat tracing interface module (307) is started, and the self-constant temperature heat tracing belt (1) bound on the sampling tube (2), the measuring cup (8) and the overflow tube (5) starts to work, so that the sample is prevented from freezing in the pipeline in the sample collecting process.
A third aspect of the invention provides an electronic device comprising a processor and a memory, the memory storing a plurality of instructions, the processor being for reading the instructions and performing the method according to the second aspect.
A fourth aspect of the invention provides a computer readable storage medium storing a plurality of instructions readable by a processor and for performing the method of the second aspect.
The method, the system, the electronic equipment and the computer readable storage medium provided by the invention have the following beneficial technical effects:
(1) The whole system is rainproof and dustproof, can be directly used outdoors, and has lower requirement on the installation environment;
(2) The sample refrigerating function is achieved, so that the sample is ensured not to deteriorate in the process of collection and preservation, and the subsequent water quality component test and analysis are not influenced;
(3) The sampling state of the sampler device can be remotely transmitted to perform remote control;
(4) The sampling mode of the sampling pump can be selected to be combined with the metering subsystem to realize sample collection in different modes such as mixed sampling, instantaneous sampling and the like.
Drawings
Fig. 1 is a block diagram showing an overall construction of a sampling system for automatic sampling of municipal sewage according to a preferred embodiment of the invention;
FIG. 2 is a schematic diagram of a control subsystem architecture according to a preferred embodiment of the present invention;
FIG. 3 is a flow chart of a sampling method for automatic sampling of municipal sewage according to a preferred embodiment of the invention;
fig. 4 is a schematic diagram of an electronic device according to a preferred embodiment of the present invention.
Reference numerals:
1 self-constant temperature heat tracing belt, 2 sampling pipe, 3 sampling sensor, 4 sampling pump and 5 overflow pipe;
6, an overflow sensor; 7 high liquid level sensor, 8 measuring cup, 9 low liquid level sensor, 10 sample valve;
11 sample incubator, 12 fan; 13 semiconductor refrigerating/heating sheet, 14 weighing sensor;
15 sample bottle, 16 temperature sensor, 17 metering tube; 18, a rain-proof cabinet body;
301 alternating current 220V to direct current 24V power module, 302 temperature control module, 303 data transmission module;
304 a controller, 305 a sensor signal acquisition module, 306 a drive module;
307 self-thermostatically heating interface module.
Detailed Description
The following describes in further detail the embodiments of the present invention with reference to the drawings and examples. The following examples are illustrative of the invention and are not intended to limit the scope of the invention.
Example 1
Referring to fig. 1, the embodiment provides a sampling system for automatically sampling urban sewage, which comprises a sampling subsystem, a metering and sampling subsystem, a refrigerating subsystem and a control subsystem; wherein,
the sampling subsystem collects and conveys a proper amount of sewage samples to the metering and sampling subsystem while being subjected to constant temperature heat tracing, and redundant sewage samples are discharged from an overflow part of the sampling subsystem;
the metering and sampling subsystem is connected with the sampling subsystem and is used for metering the sewage sample collected and conveyed by the sampling subsystem and conveying the metered sewage sample to the refrigerating subsystem;
the refrigerating subsystem is connected with the metering and sampling subsystem and is used for refrigerating and storing the metered sewage sample;
the control subsystem is respectively connected with the sampling subsystem, the metering and sampling subsystem and the refrigerating subsystem and is used for controlling a sampling process, a metering and sampling process and a refrigerating process; the control of the sampling flow comprises the collection and logic judgment of signals of a sampling sensor, an overflow sensor, a high liquid level sensor and a low liquid level sensor adopted in the sample extraction; the control of the metering and sampling flow comprises the acquisition and logic judgment of signals of a sampling sensor, an overflow sensor, a high liquid level sensor and a low liquid level sensor adopted in the metering and sampling of samples; the control of the refrigeration process comprises the control of the refrigeration temperature; the control subsystem is also used for carrying out wireless remote transmission on the sampling state data.
As a preferred embodiment, the sampling system further comprises a rain-proof cabinet 15, and the sampling subsystem, the metering and sample feeding subsystem, the refrigerating subsystem and the control subsystem are integrally arranged in the rain-proof cabinet 15; the rain-proof cabinet 15 is wholly rain-proof and dust-proof, and the whole set of device can be directly used outdoors; the rainproof cabinet 15 is provided with an electronic door lock, and a door opening and closing signal of the electronic door lock is connected to the control subsystem.
As a preferred embodiment, the sampling subsystem is composed of a self-constant temperature heat tracing belt 1, a sampling pipe 2, a sampling sensor 3, a sampling pump 4, an overflow pipe 5 and an overflow sensor 6, so as to collect and convey sewage samples; the sampling tube 2, the sampling sensor 3 and the sampling pump 4 are connected in series and enter the inlet section of a metering cup 8 of the metering and sampling subsystem; the overflow pipe 5 and the overflow sensor 6 are connected in series and enter the outlet section of the metering cup 8 of the metering and sample injection subsystem;
the self-constant temperature heat tracing 1 is bound with the sampling pipe 2, the overflow pipe 5 and the metering cup 8 of the metering and sampling subsystem and is normally wound on the outer side, and the self-constant temperature heat tracing 1 is started at the environment temperature lower than 0 ℃, so that the sample is prevented from freezing in the sampling process.
As a preferred embodiment, the metering and sampling subsystem is composed of a high liquid level sensor 7, a metering cup 8, a low liquid level sensor 9, a sampling valve 10 and a metering pipe 17, wherein the metering pipe 17 extends into the metering cup 8 to a certain height, and the sampling pump 4 is used for pumping out excessive liquid to realize metering under the condition of reversing.
As a preferred embodiment, the refrigeration subsystem is composed of a sample incubator 11, a fan 12, a semiconductor refrigeration/heating sheet 13, a temperature sensor 16, a load cell 14 and a sampling bottle 15; the temperature sensor 16, the weighing sensor 14 and the sampling bottle 15 are arranged inside the sample insulation box 11, and the fan 12 and the semiconductor refrigerating/heating sheet 13 are provided in plurality and are respectively arranged on the side wall of the sample insulation box 11; the refrigerating temperature of the sample heat preservation box 11 is adjusted by the positive connection or the negative connection of the power supply of the semiconductor refrigerating/heating sheet 13, so that the refrigerating preservation of the collected sample is realized.
Specifically, when the set refrigerating temperature is lower than the ambient temperature, the power supply of the semiconductor refrigerating/heating sheet is connected positively, so that the refrigerating subsystem is used for refrigerating, and the temperature in the sample insulation box 11 is kept consistent with the set refrigerating temperature; when the set refrigerating temperature is higher than the ambient temperature, the semiconductor refrigerating/heating sheets are reversely connected with power supply, so that the refrigerating subsystem is used for heating, and the temperature in the sample heat preservation box 11 is kept consistent with the set refrigerating temperature.
Referring to fig. 2, as a preferred embodiment, the control subsystem is composed of an ac 220V to dc 24V power module 301, a temperature control module 302, a data transmission module 303, a controller 304, a sensor signal acquisition module 305, a driving module 306, and a self-constant temperature heat tracing interface module 307;
the alternating current 220V is respectively connected with the self-constant temperature heat tracing interface module 307 and the input of the alternating current 220V-direct current 24V power module 301, the output of the alternating current 220V-direct current 24V power module 301 is connected with the input of the temperature control module 302 and the input of the controller 304, and the output of the controller 304 is respectively connected with the data transmission module 303, the sensor signal acquisition module 305 and the driving module 306.
As a preferred embodiment, the data transmission module 303 includes a Wi F i function and a wireless data transmission function, and the short-distance mobile phone is connected with the sampling system for automatically sampling urban sewage through the Wi F i function and performs parameter setting on the sampling system; the driving module 306 controls the sampling pump 4 and the sampling valve 10 to collect, meter and store the sample in a refrigerating way; the sampling state and the historical data of the sampling system for automatically sampling the urban sewage are remotely and wirelessly transmitted through the wireless data transmission function; the sensor signal acquisition module 305 is configured to read signals of the low liquid level sensor 9, the high liquid level sensor 7 and the weighing sensor 14, and the controller performs signal judgment to realize signal feedback of a sample acquisition state; the temperature control is used for realizing the temperature control of the sampling pipeline and the cold storage of the sample incubator.
As shown in fig. 3, the present embodiment provides a sampling method for automatically sampling urban sewage, including:
s1, automatically sampling urban sewage in a first sampling period, wherein the automatic sampling comprises the following steps:
s11, urban sewage sample extraction, which comprises the following steps:
(1) The controller 304 receives sampling setting parameters from the short-distance mobile phone end app or the remote control system through the Wi F i function or the wireless data transmission function of the data transmission module 303;
(2) According to the sampling setting parameters, the controller 304 controls the driving module 306 to drive the sampling pump 4 in the flow path to act so as to realize the extraction of the sewage sample; the sampling pump 4 rotates positively, the sewage sample enters the measuring cup 8 through the sampling pipe 2, and the redundant sample flows out through the overflow pipe 5, so that the sample extraction is realized;
(3) In the process of extracting the sewage sample, liquid level signals of the sampling sensor 3, the overflow sensor 6, the high liquid level sensor 7 and the low liquid level sensor 9 are transmitted to the sensor signal acquisition module 305 in real time, and the controller 304 performs logic judgment according to the liquid level signals to judge whether the extracting operation state of the sewage sample is normal or not;
s12, urban sewage sample metering, which comprises the following steps:
(1) After the urban sewage sample is extracted, the sampling pump 4 reversely rotates to extract and discharge the excessive sample in the overflow pipe 5 and the part above the height of the measuring pipe 17 in the measuring cup 8, so as to realize the measurement of the urban sewage sample;
(2) In the process of metering the urban sewage sample, liquid level signals of the sampling sensor 3, the overflow sensor 6, the high liquid level sensor 7 and the low liquid level sensor 9 are transmitted to the sensor signal acquisition module 305 in real time, and the controller 304 carries out logic judgment according to the liquid level signals so as to judge whether the metering operation state of the sewage sample is normal or not;
s13, sampling of a municipal sewage sample, comprising:
(1) After the measurement of the sewage sample is finished, a sampling valve 10 is opened, and the sample in the measuring cup 8 is discharged into a sampling bottle 15 in a sample insulation box 11, so that the sampling of the urban sewage sample is realized;
(2) In the sampling process of the urban sewage sample, the liquid level signal of the low liquid level sensor 9 and the signal of the weighing sensor 14 are transmitted to a sensor signal acquisition module 305 in real time, and a controller 304 carries out logic judgment according to the liquid level signal so as to judge whether the sampling operation state of the sewage sample is normal or not;
ending a sampling period after sample injection is ended;
s2, repeating the step S1 in N periods by the device according to parameter setting so as to acquire a circulating sample;
s3, the temperature sensor 16 transmits temperature signals in the sample incubator 11 to the temperature control module 302 in real time, and the temperature control module 302 controls the refrigeration or heating mode of the semiconductor refrigeration/heating sheet 13 based on the set refrigeration temperature and the current real-time temperature in a comparison manner, so that the constant-temperature refrigeration function of the urban sewage sample in the sampling bottle 15 is realized;
s4, a sensor signal acquisition module 305 acquires door lock switching signals of the rainproof cabinet 18 in real time and monitors sampling products in real time; when the ambient temperature is lower than 0 ℃, the self-constant temperature heat tracing interface module 307 is started, and the self-constant temperature heat tracing belt 1 bound on the sampling tube 2, the measuring cup 8 and the overflow tube 5 starts to work, so that the sample is prevented from freezing in the pipeline in the sample collecting process.
The invention also provides a memory storing a plurality of instructions for implementing the method according to embodiment one.
As shown in fig. 4, the present invention further provides an electronic device, including a processor 301 and a memory 302 connected to the processor 301, where the memory 302 stores a plurality of instructions, and the instructions may be loaded and executed by the processor, so that the processor can perform the method according to the embodiment.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the following claims be interpreted as including the preferred embodiments and all such alterations and modifications as fall within the scope of the invention. It will be apparent to those skilled in the art that various modifications and variations can be made to the present invention without departing from the spirit or scope of the invention. Thus, it is intended that the present invention also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.
Claims (10)
1. The sampling system for automatically sampling the urban sewage is characterized by comprising a sampling subsystem, a metering and sampling subsystem, a refrigerating subsystem and a control subsystem; wherein,
the sampling subsystem collects and conveys a proper amount of sewage samples to the metering and sampling subsystem while being subjected to constant temperature heat tracing, and redundant sewage samples are discharged from an overflow part of the sampling subsystem;
the metering and sampling subsystem is connected with the sampling subsystem and is used for metering the sewage sample collected and conveyed by the sampling subsystem and conveying the metered sewage sample to the refrigerating subsystem;
the refrigerating subsystem is connected with the metering and sampling subsystem and is used for refrigerating and storing the metered sewage sample;
the control subsystem is respectively connected with the sampling subsystem, the metering and sampling subsystem and the refrigerating subsystem and is used for controlling a sampling process, a metering and sampling process and a refrigerating process; the control of the sampling flow comprises the collection and logic judgment of signals of a sampling sensor, an overflow sensor, a high liquid level sensor and a low liquid level sensor adopted in the sample extraction; the control of the metering and sampling flow comprises the acquisition and logic judgment of signals of a sampling sensor, an overflow sensor, a high liquid level sensor and a low liquid level sensor adopted in the metering and sampling of samples; the control of the refrigeration process comprises the control of the refrigeration temperature; the control subsystem is also used for carrying out wireless remote transmission on the sampling state data.
2. A sampling system for automatic sampling of municipal sewage according to claim 1, further comprising a rain-proof cabinet (15), wherein the sampling, metering and sample-feeding, refrigeration and control subsystems are integrated within the rain-proof cabinet (15); the rain-proof cabinet body (15) is integrally rain-proof and dust-proof, and the whole set of device can be directly used outdoors; the rainproof cabinet body (15) is provided with an electronic door lock, and a door opening and closing signal of the electronic door lock is connected to the control subsystem.
3. The sampling system for automatically sampling urban sewage according to claim 2, wherein the sampling subsystem is composed of a self-constant temperature heat tracing belt (1), a sampling tube (2), a sampling sensor (3), a sampling pump (4), an overflow tube (5) and an overflow sensor (6), so as to collect and convey sewage samples; the sampling tube (2), the sampling sensor (3) and the sampling pump (4) are connected in series and enter an inlet section of a metering cup (8) of the metering and sampling subsystem; the overflow pipe (5) is connected in series with the overflow sensor (6) and enters the outlet section of the metering cup (8) of the metering and sample injection subsystem;
the self-constant temperature heat tracing device is characterized in that the self-constant temperature heat tracing device (1) is bound with a sampling pipe (2), an overflow pipe (5) and a metering cup (8) of the metering and sample injection subsystem, and the self-constant temperature heat tracing device is started when the ambient temperature is lower than 0 ℃.
4. A sampling system for automatic sampling of municipal sewage according to claim 3, wherein the metering and sampling subsystem is composed of a high level sensor (7), a metering cup (8), a low level sensor (9), a sampling valve (10) and a metering tube (17), wherein the metering tube (17) extends into the metering cup (8) to a certain height, and the sampling pump (4) withdraws excess liquid to realize metering under the condition of reversing.
5. The sampling system for automatic sampling of municipal sewage according to claim 4, wherein the refrigeration subsystem is composed of a sample incubator (11), a fan (12), a semiconductor cooling/heating sheet (13), a temperature sensor (16), a load cell (14) and a sampling bottle (15); the temperature sensor (16), the weighing sensor (14) and the sampling bottle (15) are arranged inside the sample insulation box (11), and the fans (12) and the semiconductor refrigerating/heating sheets (13) are multiple and are respectively arranged on the side wall of the sample insulation box (11); the refrigerating temperature of the sample insulation box (11) is adjusted by the positive connection or the reverse connection of the power supply of the semiconductor refrigerating/heating sheet (13).
6. The sampling system for automatic sampling of municipal sewage according to claim 5, wherein the control subsystem is composed of an ac 220V to dc 24V power module (301), a temperature control module (302), a data transmission module (303), a controller (304), a sensor signal acquisition module (305), a driving module (306) and a self-constant temperature heat tracing interface module (307);
the alternating current 220V is respectively connected with the self-constant temperature heat tracing interface module (307) and the input of the alternating current 220V-direct current 24V power module (301), the output of the alternating current 220V-direct current 24V power module (301) is connected with the input of the temperature control module (302) and the input of the controller (304), and the output of the controller (304) is respectively connected with the data transmission module (303), the sensor signal acquisition module (305) and the driving module (306).
7. The sampling system for automatic sampling of municipal sewage according to claim 6, wherein the data transmission module (303) comprises a WiFi function and a wireless data transmission function, and wherein a short-range cell phone is connected to the sampling system for automatic sampling of municipal sewage via the WiFi function and performs parameter setting thereon; the driving module (306) controls the sampling pump (4) and the sample injection valve (10) to realize sample collection, metering and cold storage; the sampling state and the historical data of the sampling system for automatically sampling the urban sewage are remotely and wirelessly transmitted through the wireless data transmission function; the sensor signal acquisition module (305) is used for reading signals of the low liquid level sensor (9), the high liquid level sensor (7) and the weighing sensor (14), and the controller judges signals and realizes signal feedback of a sample acquisition state; the temperature control is used for realizing the temperature control of the sampling pipeline and the cold storage of the sample incubator.
8. A sampling method for automatic sampling of urban sewage, implemented on the basis of the sampling system according to any one of claims 1 to 7, characterized in that it comprises:
s1, automatically sampling urban sewage in a first sampling period, wherein the automatic sampling comprises the following steps:
s11, urban sewage sample extraction, which comprises the following steps:
(1) The controller (304) receives sampling setting parameters from the short-distance mobile phone terminal app or the remote control system through a WiFi function or a wireless data transmission function of the data transmission module (303);
(2) According to the sampling setting parameters, the controller (304) controls the driving module (306) to drive the sampling pump (4) in the flow path to realize the extraction of the sewage sample; the sampling pump (4) rotates positively, a sewage sample enters the metering cup (8) through the sampling pipe (2), and an excessive sample flows out through the overflow pipe (5) to realize sample extraction;
(3) In the process of extracting the sewage sample, liquid level signals of the sampling sensor (3), the overflow sensor (6), the high liquid level sensor (7) and the low liquid level sensor (9) are transmitted to a sensor signal acquisition module (305) in real time, and a controller (304) carries out logic judgment according to the liquid level signals so as to judge whether the extracting operation state of the sewage sample is normal or not;
s12, urban sewage sample metering, which comprises the following steps:
(1) After the urban sewage sample is extracted, the sampling pump (4) reversely rotates to extract and discharge the surplus sample in the overflow pipe (5) and the part above the height of the metering pipe (17) in the metering cup (8), so that the urban sewage sample is metered;
(2) In the urban sewage sample metering process, liquid level signals of the sampling sensor (3), the overflow sensor (6), the high liquid level sensor (7) and the low liquid level sensor (9) are transmitted to a sensor signal acquisition module (305) in real time, and a controller (304) carries out logic judgment according to the liquid level signals so as to judge whether the sewage sample metering operation state is normal or not;
s13, sampling of a municipal sewage sample, comprising:
(1) After the measurement of the sewage sample is finished, a sampling valve (10) is opened, and the sample in the measuring cup (8) is discharged into a sampling bottle (15) in a sample insulation box (11) to realize the sampling of the urban sewage sample;
(2) In the sampling process of the urban sewage sample, the liquid level signal of the low liquid level sensor (9) and the signal of the weighing sensor (14) are transmitted to a sensor signal acquisition module (305) in real time, and a controller (304) carries out logic judgment according to the liquid level signal so as to judge whether the sampling operation state of the sewage sample is normal or not;
ending a sampling period after sample injection is ended;
s2, repeating the step S1 in N periods by the device according to parameter setting so as to acquire a circulating sample;
s3, transmitting temperature signals in the sample incubator (11) to a temperature control module (302) in real time by a temperature sensor (16), and controlling the refrigeration or heating mode of the semiconductor refrigeration/heating sheet (13) by the temperature control module (302) based on the comparison of the set refrigeration temperature and the current real-time temperature to realize the constant-temperature refrigeration function of the urban sewage sample in the sampling bottle (15);
s4, a sensor signal acquisition module (305) acquires door lock switch signals of the rainproof cabinet body (18) in real time, and monitors sampling products in real time; when the ambient temperature is lower than 0 ℃, the self-constant temperature heat tracing interface module (307) is started, and the self-constant temperature heat tracing belt (1) bound on the sampling tube (2), the measuring cup (8) and the overflow tube (5) starts to work, so that the sample is prevented from freezing in the pipeline in the sample collecting process.
9. An electronic device comprising a processor and a memory, the memory storing a plurality of instructions, the processor to read the instructions and perform the method of claim 8.
10. A computer readable storage medium storing a plurality of instructions readable by a processor and for performing the method of claim 8.
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