CN113092707B - Method for judging flowing liquid in mixed flow pipe or mixed flow channel - Google Patents
Method for judging flowing liquid in mixed flow pipe or mixed flow channel Download PDFInfo
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- CN113092707B CN113092707B CN202110398719.5A CN202110398719A CN113092707B CN 113092707 B CN113092707 B CN 113092707B CN 202110398719 A CN202110398719 A CN 202110398719A CN 113092707 B CN113092707 B CN 113092707B
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Abstract
The invention relates to a method for judging flowing liquid in a mixed flow pipe or a mixed flow ditch, which can determine whether the current weather is rain or non-rain weather directly by judging whether rainwater is collected in a water quality judging pipe or not, thereby judging whether the flowing liquid in the mixed flow pipe or the mixed flow ditch is rain or sewage, wherein the method is simple and efficient, and the judgment result is direct and accurate; the intervention of a precision detection instrument required in the existing scheme is not needed, the problem of high misjudgment rate simply according to the flow is avoided, the practicability is high, and the misjudgment can be avoided; rainwater introduced by the water quality judging pipe for discharging rainwater only is collected, and the energy such as buoyancy, gravity and the like which can be provided by the rainwater is used as a power source for driving the sewage discharge port switching valve, so that accurate rainwater and sewage distribution is automatically realized.
Description
Technical Field
The invention relates to the technical field of mixed flow liquid discrimination, in particular to a method for discriminating flowing liquid in a mixed flow pipe or a mixed flow groove.
Background
In the environment such as building district and road square, whether the drainage in a drain pipe (ditch) is sewage or rainwater can be confirmed through detailed investigation, and the corresponding confirmation according to the result of investigation is to insert the drain pipe (ditch) into corresponding municipal rainwater pipe network or municipal sewage pipe network to realize the distribution of rainwater and sewage.
However, under many circumstances, the mixed flow of rainwater and sewage is commonly existed in some drainage pipes (ditches), that is, the rainwater and sewage are discharged by using the same drainage pipeline at different periods, so that the important problem to be solved is that the drainage pipe (ditch) for mixed flow discharge should be connected to a municipal rainwater pipe network or a municipal sewage pipe network. On one hand, in order to prevent the water bodies such as rivers, lakes and the like from being black and smelly, sewage cannot be discharged into a municipal rainwater pipe network; on the other hand, in order to improve the quality and the efficiency of the municipal sewage treatment plant, the rainwater cannot enter a municipal sewage pipe network. For example, a balcony raindrop pipe in a building community generally drains roof rainwater in rainfall, so that most residents can connect washing machines and wash basin sewage into the pipeline, and the sewage drained by the pipeline is the washing sewage in washing. And the waste collection and transfer points, the self-service car washing points, the flushing and dumping water of the catering facilities beside the road and the like, the collected and discharged water is sewage in sunny days, and the collected and discharged water is rainwater in rainfall. Under the conditions, the method has important practical significance on simply and effectively judging the mixed flow water discharged from the drain pipe (ditch) and then accurately distributing the rain and sewage according to the judgment result.
At present, two methods for accurately judging the drainage quality of a drainage pipe (ditch) are mainly used, but the two methods have certain problems at present.
The method comprises the following steps: a water quality monitoring instrument is arranged in a drain pipe (ditch), the detection instrument detects the water quality index of mixed water drained from the drain pipe (ditch) in real time, and whether the drained water is sewage or rainwater is judged according to the detected corresponding water quality index value (such as SS/PH/ORP numerical value).
The method has relatively accurate detection result and can distinguish the property of the mixed water in the drainage pipe (ditch) in real time. But has the disadvantages that: the method has high construction cost and high instrument operation and maintenance cost; meanwhile, the requirements on power supply, the quality of maintenance personnel and the like are high, and the large-scale application in environments such as building districts, road squares and the like can not be realized basically.
The second method comprises the following steps: the drainage is sewage or rain water according to the flow of mixed flow in the drainage pipe (ditch). The basic principle of the method is as follows: the sewage flow is small in fine days, small-water-amount drainage can be judged as sewage, and a small pipeline is connected to a municipal sewage pipe network; in rainy days, the flow of rainwater is large, the drainage quantity of small pipelines is less than the water inflow, and the water level of a drainage pipe (ditch) can be increased, so that the rainwater is judged at the moment, and the rainwater is connected with the connecting pipe and drained into a municipal rainwater pipe network.
The method is simple and convenient and is easy to implement. However, the judgment principle of the judgment method is wrong, and the rain and sewage misjudgment condition can often happen, and the main reason is that the judgment of the sewage discharge and the rain discharge is wrong. In general, the drainage of sewage such as washing, rinsing, pouring and the like is generated in a short time, the total drainage is small, but the instantaneous drainage is large; meanwhile, most rainfall generally lasts for a long time, the total displacement is large, but the instantaneous displacement is small, and only when special short-time heavy rain occurs, the conditions that the total displacement is large and the instantaneous displacement is also large can occur. The method can judge a large amount of sewage discharged in a short time as rainwater, judge rainwater flowing into the medium and small rain for a long time as sewage, and wrongly connect the rainwater and the sewage into corresponding opposite municipal pipe networks.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides a method for judging the liquid flowing in a mixed flow pipe or a mixed flow groove.
The technical scheme adopted by the invention for solving the technical problem is as follows:
a method for judging liquid flowing in a mixed flow pipe or a mixed flow groove is characterized in that: the method comprises the following steps:
1) Taking a rainwater collecting pipe into which no sewage is collected as a water quality judging pipe, connecting an outlet end of the rainwater collecting pipe into a mixed flow pipe or a mixed flow ditch, and arranging a water quality observation device in the rainwater collecting pipe;
2) Observing through a water quality observation device:
2.1 If no water flows into the pipe, the water quality is judged to be in a non-rainy day, the drainage in the mixed flow pipe or the mixed flow ditch is judged to be sewage, and the drainage in the mixed flow pipe or the mixed flow ditch is connected to a municipal sewage pipe network;
2.2 When water is gathered in the water quality judging pipe, the water quality judging pipe judges that the water is rainy day, the drainage in the mixed flow pipe or the mixed flow ditch is determined to be rainwater, and the drainage in the mixed flow pipe or the mixed flow ditch is connected to a municipal rainwater pipe network.
Further, the water quality observation device is any one of an observation window, an image recognition device, a resistance sensing device, a liquid level sensing device, a gravity sensing device, a buoyancy sensing device or a floating ball switch device.
Further, when the water quality observation device selects an observation window, if no water in the water quality judgment pipe is converged through the observation window, judging that the water quality judgment pipe is not rainy at the moment; if the water quality judging pipe is observed through the observation window to have water flowing in, the rainy day is judged.
Further, when the water quality observation device adopts an image recognition device, if the image recognition device displays that no water is merged into the water quality judgment pipe, the water quality observation device judges that the water quality judgment pipe is not rainy; if the image recognition device displays that water is merged into the water quality judging pipe, the judgment is made that the water is rainy.
Further, when the water quality observation device adopts a resistance sensing device, if the resistance sensing device detects that the resistance value of the detection position in the water quality judgment pipe is not changed, the water quality judgment pipe is determined that no water is converged, namely, the non-rainy day is judged; if the resistance value of the detection position in the water quality judgment pipe is detected to be changed through the resistance sensing device, the water quality judgment pipe is determined to have water flowing in, and the rainy day is judged at the moment.
Further, when the water quality observation device adopts a liquid level sensing device, if the liquid level sensing device detects that the liquid level position in the water quality judgment pipe is not changed, the water quality judgment pipe is determined that no water flows into the water quality judgment pipe, and then the non-rainy day is judged; if the liquid level position in the water quality judgment pipe is detected to be changed through the liquid level sensing device, the water in the water quality judgment pipe is considered to be converged, and the rainy day is judged at the moment.
Further, when the water quality observation device adopts a gravity sensing device, if the gravity sensing device detects that the gravity value of the detection position in the water quality judgment pipe is not changed, the water quality judgment pipe is determined that no water flows into the water quality judgment pipe, and the non-rainy day is judged; if the gravity value of the detection position in the water quality judging pipe is detected to be changed by the gravity sensing device, the water quality judging pipe is determined to have water flowing in, and the rainy day is judged at the moment.
Further, when the water quality observation device adopts a buoyancy sensing device, if the buoyancy sensing device detects that the position of the floater in the water quality judgment pipe is not changed, the water quality judgment pipe is judged that no water is converged, namely, the water quality judgment pipe is judged to be in a non-rainy day; if the buoyancy sensing device detects that the position of the floater in the water quality judging pipe changes, the water in the water quality judging pipe is judged to be gathered, and the rainy day is judged at the moment.
Further, when the water quality observation device selects a float switch device, if a circuit where the float switch device is located is not connected, it is determined that no water flows into the water quality determination pipe, that is, it is determined that the water quality determination pipe is not rainy at the moment; if the circuit where the float switch device is located is connected, it is judged that water flows into the water quality judging pipe, and then it is judged that the water quality judging pipe is rainy.
Further, after the judgment is finished, according to the judgment result, any one or combination of a buoyancy switch, a gravity switch, a pneumatic switch and an electric switch is correspondingly adopted to close or open the sewage discharge port in the municipal sewage pipe network.
The invention has the beneficial effects that:
(1) The invention provides a method for judging flowing liquid in a mixed flow pipe or a mixed flow ditch, which can determine whether the current weather is rain or non-rain weather directly by judging whether rainwater is collected in a water quality judging pipe or not, so as to judge whether the flowing liquid in the mixed flow pipe or the mixed flow ditch is rain or sewage, the method is simple and efficient, and the judgment result is direct and accurate; the intervention of a precision detection instrument required in the existing scheme is not needed, the problem of high misjudgment rate simply according to the flow is avoided, the practicability is high, and the misjudgment can be avoided; rainwater introduced by the water quality judging pipe for discharging rainwater only is collected, and the energy such as buoyancy, gravity and the like which can be provided by the rainwater is used as a power source for driving the sewage discharge port switching valve, so that accurate rainwater and sewage distribution is automatically realized.
(2) The invention provides a method for judging flowing liquid in a mixed flow pipe or a mixed flow ditch, which can determine whether the current weather is rain or non-rain weather directly by judging whether rainwater is collected in a water quality judging pipe or not, can avoid misjudgment possibly caused by larger instantaneous sewage discharge and smaller instantaneous rainwater discharge, and has direct and accurate judgment result.
(3) The invention provides a method for judging flowing liquid in a mixed flow pipe or a mixed flow groove, which has strong adaptability and wide application range, and can be suitable for drainage occasions such as a family living south balcony, a garbage collection and transfer point, a self-service car washing point, a roadside catering facility and the like.
Drawings
FIG. 1 is a flow chart of the steps of the present invention.
Detailed Description
The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams each illustrating the basic structure of the present invention only in a schematic manner, and thus show only the constitution related to the present invention.
Fig. 1 shows a method for discriminating a liquid flowing in a mixed flow pipe or a mixed flow groove provided by the invention, which comprises the following steps:
1) Taking a rainwater collecting pipe into which no sewage is collected as a water quality judging pipe, connecting an outlet end of the rainwater collecting pipe into a mixed flow pipe or a mixed flow ditch, and arranging a water quality observation device in the rainwater collecting pipe;
2) Observing through a water quality observation device:
2.1 When no water flows into the water quality judging pipe, judging whether the water quality judging pipe is rainy or not, determining that the drainage in the mixed flow pipe or the mixed flow ditch is sewage, and connecting the drainage in the mixed flow pipe or the mixed flow ditch to a municipal sewage pipe network;
2.2 If water is gathered in the water quality judging pipe, the water quality judging pipe judges that the water is rainy at the moment, the drainage in the mixed flow pipe or the mixed flow ditch is determined to be rainwater at the moment, and the drainage in the mixed flow pipe or the mixed flow ditch is connected to a municipal rainwater pipe network.
Specifically, the water quality observation device selects any one of an observation window, an image recognition device, a resistance sensing device, a liquid level sensing device, a gravity sensing device, a buoyancy sensing device or a floating ball switch device. Rainwater introduced by a water quality judging pipe for discharging rainwater only is collected, so that whether flowing liquid in the mixed flow pipe or the mixed flow ditch is rainwater or sewage is judged, the judging method is simple and efficient, and the judging result is direct and accurate; the method has the advantages that the intervention of a required precision detection instrument in the existing scheme is not needed, the problem of high misjudgment rate according to the flow is avoided, the practicability is high, and the misjudgment can be avoided.
Specifically, when the water quality observation device selects the observation window, if no water is merged into the water quality judgment pipe through the observation window, the non-rainy day is judged; if the water quality judging pipe is observed to be penetrated by water through the observation window, the rainy day is judged; the observation window is adopted for direct observation, a special detection instrument is not needed, the judgment result is direct and accurate, and the cost is effectively reduced.
Specifically, when the water quality observation device adopts an image recognition device, if the image recognition device displays that no water is converged in the water quality judgment pipe, the non-rainy day is judged; if the image recognition device displays that water in the water quality judgment pipe is converged, judging that the water is rainy; the image recognition device is adopted for direct observation, the defect that a specially-assigned person is required for manual observation is avoided, the possible fatigue and misjudgment during manual observation are reduced, and meanwhile, the image recognition device can be arranged at an indoor position far away from the water quality judgment pipe, so that observation and judgment are facilitated, and the comfort level of an observation environment is improved; further preferably, the image recognition device may be provided with a warning device such as a sound, a graphic, or a vibration when water is introduced into the water quality determination pipe.
Specifically, when the water quality observation device is a resistance sensing device, if the resistance sensing device detects that the resistance value of the detection position in the water quality judgment pipe is not changed, the water quality judgment pipe is determined that no water is merged into the water quality judgment pipe, namely, the water quality judgment pipe is determined to be in a non-rainy day; if the resistance value of the detection position in the water quality judging pipe is detected to be changed by the resistance sensing device, the water quality judging pipe is determined to have water flowing in, and the rainy day is judged at the moment; preferably, the resistance sensing device is arranged in the control circuit, when no water is merged into the water quality judging pipe, the resistance value of the resistance sensing device is unchanged, the control circuit is not switched on, when water is merged into the water quality judging pipe, the resistance value of the resistance sensing device is reduced, the control circuit is switched on, and therefore the sewage discharge port in the municipal sewage pipe network is closed; similarly, when no water is converged in the water quality judging pipe, the resistance value of the resistance sensing device is unchanged, the control circuit is kept connected, when water is converged in the water quality judging pipe, the resistance value of the resistance sensing device is increased, and the control circuit is disconnected, so that the sewage discharge port in the municipal sewage pipe network is closed.
Specifically, when the water quality observation device adopts a liquid level sensing device, if the liquid level sensing device detects that the liquid level position in the water quality judgment pipe is not changed, the water quality judgment pipe is determined that no water flows into the water quality judgment pipe, and then the non-rainy day is judged; if the liquid level sensing device detects that the liquid level position in the water quality judging pipe changes, the water quality judging pipe is determined to have water flowing in, namely, the water quality judging pipe is judged to be rainy at the moment; preferably, the liquid level sensing device can be arranged in the control circuit, when no water is converged in the water quality judging pipe, the liquid level position of the liquid level sensing device is unchanged, the control circuit is not connected, when water is converged in the water quality judging pipe, the liquid level position of the liquid level sensing device is raised, the control circuit is connected under the action of buoyancy or a connecting rod, and therefore the sewage discharge port in the municipal sewage pipe network is closed; similarly, when no water is converged in the water quality judging pipe, the liquid level position of the liquid level sensing device is unchanged, the control circuit is kept connected, when water is converged in the water quality judging pipe, the liquid level position of the liquid level sensing device is increased, and the control circuit is disconnected under the action of buoyancy or the connecting rod, so that the sewage discharge port in the municipal sewage pipe network is closed.
Specifically, when the water quality observation device is a gravity sensing device, if the gravity sensing device detects that the gravity value of the detection position in the water quality judgment pipe is not changed, the water quality judgment pipe is determined that no water is merged into the water quality judgment pipe, and the non-rainy day is judged; if the gravity value of the detection position in the water quality judging pipe is detected to be changed by the gravity sensing device, the water quality judging pipe is determined to have water merged, namely, the water quality judging pipe is determined to be rainy at the moment; preferably, the gravity sensing device can be arranged in the control circuit, when no water is merged into the water quality judging pipe, the gravity value sensed by the gravity sensing device is unchanged, the control circuit is not switched on, when water is merged into the water quality judging pipe, the gravity value sensed by the gravity sensing device is increased, the control circuit is switched on under the action of gravity or a connecting rod, and therefore the sewage discharge port in the municipal sewage pipe network is closed; similarly, when no water is converged in the water quality judgment pipe, the gravity value sensed by the gravity sensing device is unchanged, the control circuit is kept switched on, when water is converged in the water quality judgment pipe, the gravity value sensed by the gravity sensing device is increased, and the control circuit is switched off under the action of buoyancy or the connecting rod, so that the sewage outlet in the municipal sewage pipe network is closed.
Specifically, when the water quality observation device selects the buoyancy sensing device, if the buoyancy sensing device detects that the position of the floater in the water quality judgment pipe is not changed, it is judged that no water flows into the water quality judgment pipe, that is, it is judged that the water quality judgment pipe is not rainy at the moment; if the buoyancy sensing device detects that the position of the floater in the water quality judging pipe changes, judging that water flows into the water quality judging pipe, namely judging that the water is rainy; preferably, the buoyancy sensing device may be disposed in the control circuit, when no water is merged into the water quality determination pipe, the position of the float sensed by the buoyancy sensing device is unchanged, the control circuit is not turned on, when water is merged into the water quality determination pipe, the position of the float sensed by the buoyancy sensing device is raised, and the control circuit is turned on under the action of gravity or a connecting rod, so as to close the sewage discharge port in the municipal sewage pipe network; similarly, when no water is converged in the water quality judging pipe, the position of the float sensed by the buoyancy sensing device is unchanged, the control circuit is kept connected, when water is converged in the water quality judging pipe, the position of the float sensed by the buoyancy sensing device is raised, and the control circuit is disconnected under the action of buoyancy or the connecting rod, so that the sewage discharge port in the municipal sewage pipe network is closed.
Specifically, when the water quality observation device selects a float switch device, if a circuit where the float switch device is located is not connected, it is determined that no water flows into the water quality determination pipe, that is, it is determined that the water quality determination pipe is not rainy at the moment; if the circuit where the float switch device is located is connected, it is judged that water flows into the water quality judging pipe, namely, it is judged that the water quality judging pipe is rainy; when rainwater is collected in the water quality judging pipe, the floating ball gradually rises under the action of buoyancy, the liquid level floating ball switch is gradually closed, the corresponding circuit is connected, at the moment, the rainwater is collected in the water quality judging pipe (a corresponding induction signal lamp can be arranged), and the opening or closing of a sewage discharge port in the municipal sewage pipe network is controlled through the corresponding circuit.
Specifically, after the judgment is finished, according to the judgment result, any one or combination of a buoyancy switch, a gravity switch, a pneumatic switch and an electric switch is correspondingly adopted to close or open a sewage discharge port in the municipal sewage pipe network, and under the supply of a power supply or an air source, the flow direction of a water flow sewage discharge port in the mixed flow pipe can be switched through a corresponding electric valve or a corresponding pneumatic valve, so that accurate rainwater and sewage diversion is realized; under the condition of no power supply, rainwater introduced into the water quality judging pipe for discharging rainwater singly can be collected, and meanwhile, energy such as buoyancy, gravity and the like provided by the rainwater collected by the water quality judging pipe is used as a power source for driving the sewage discharge port switching valve, so that accurate rainwater and sewage distribution is automatically realized; in order to further improve the reliability of the rain and sewage flow, various combinations can be adopted; as a further optimization, on the premise that the detection device making the determination result can close or open the sewage discharge port in the municipal sewage pipe network, the detection device is preferentially adopted to close or open the sewage discharge port in the municipal sewage pipe network, so that on the premise that the discrimination and control accuracy is ensured, the arrangement space is further saved, and the production cost is reduced.
In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (8)
1. A method for distinguishing flowing liquid in a mixed flow pipe or a mixed flow groove is characterized in that: the method comprises the following steps:
1) Taking a rainwater collecting pipe into which no sewage is collected as a water quality judging pipe, connecting an outlet end of the rainwater collecting pipe into a mixed flow pipe or a mixed flow ditch, and arranging a water quality observation device in the rainwater collecting pipe;
2) Observing through a water quality observation device:
2.1 If no water flows into the pipe, the water quality is judged to be in a non-rainy day, the drainage in the mixed flow pipe or the mixed flow ditch is judged to be sewage, and the drainage in the mixed flow pipe or the mixed flow ditch is connected to a municipal sewage pipe network;
2.2 If water flows into the pipe, the water quality is judged to be rainy, the drainage in the mixed flow pipe or the mixed flow ditch is judged to be rainwater, and the drainage in the mixed flow pipe or the mixed flow ditch is connected to a municipal rainwater pipe network;
the water quality observation device is any one of an image recognition device, a resistance sensing device, a liquid level sensing device, a gravity sensing device, a buoyancy sensing device or a floating ball switch device.
2. The method for distinguishing the liquid flowing in the mixed flow pipe or the mixed flow groove according to claim 1, wherein: when the water quality observation device adopts an image recognition device, if the image recognition device displays that no water is converged in the water quality judgment pipe, judging whether the water quality observation device is rainy; if the image recognition device displays that water is converged in the water quality judging pipe, the rainy day is judged.
3. The method for judging the liquid flowing in the mixed flow pipe or the mixed flow groove according to claim 1, characterized in that: when the water quality observation device selects the resistance sensing device, if the resistance sensing device detects that the resistance value of the detection position in the water quality judgment pipe is not changed, the water quality judgment pipe is determined that no water is converged, namely, the water quality judgment pipe is judged to be in a non-rainy day; if the resistance value of the detection position in the water quality judgment pipe is detected to be changed through the resistance sensing device, the water quality judgment pipe is determined to have water flowing in, and the rainy day is judged at the moment.
4. The method for distinguishing the liquid flowing in the mixed flow pipe or the mixed flow groove according to claim 1, wherein: when the water quality observation device adopts the liquid level sensing device, if the liquid level sensing device detects that the liquid level position in the water quality judgment pipe is not changed, the water quality judgment pipe is determined that no water is merged in, namely, the non-rainy day is judged; if the liquid level position in the water quality judging pipe is detected to be changed through the liquid level sensing device, the water in the water quality judging pipe is determined to be converged, and the rainy day is judged at the moment.
5. The method for distinguishing the liquid flowing in the mixed flow pipe or the mixed flow groove according to claim 1, wherein: when the water quality observation device adopts a gravity sensing device, if the gravity sensing device detects that the gravity value of the detection position in the water quality judgment pipe is not changed, the water quality judgment pipe is determined that no water is converged, namely, the water quality judgment pipe is judged to be in a non-rainy day; if the gravity value of the detection position in the water quality judging pipe is detected to be changed by the gravity sensing device, the water quality judging pipe is determined to have water flowing in, and the rainy day is judged at the moment.
6. The method for distinguishing the liquid flowing in the mixed flow pipe or the mixed flow groove according to claim 1, wherein: when the water quality observation device selects a buoyancy sensing device, if the buoyancy sensing device detects that the position of a floater in the water quality judgment pipe is not changed, judging that no water flows into the water quality judgment pipe, namely judging that the water quality judgment pipe is not rainy; if the position of the floater in the water quality judging pipe is detected to be changed through the buoyancy sensing device, the water in the water quality judging pipe is judged to be converged, and the rainy day is judged at the moment.
7. The method for distinguishing the liquid flowing in the mixed flow pipe or the mixed flow groove according to claim 1, wherein: when the water quality observation device selects the floating ball switch device, if the circuit of the floating ball switch device is not connected, the water quality judgment pipe is judged that no water is converged, namely the water quality judgment pipe is judged to be in a non-rainy day; if the circuit where the float switch device is located is connected, it is judged that water flows into the water quality judging pipe, and then it is judged that the water quality judging pipe is rainy.
8. The method for distinguishing the liquid flowing in the mixed flow pipe or the mixed flow groove according to any one of claims 2 to 7, wherein: after the judgment is finished, the sewage discharge port in the municipal sewage pipe network is closed or opened by correspondingly adopting any one or combination of a buoyancy switch, a gravity switch, a pneumatic switch and an electric switch according to the judgment result.
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