CN113756369B - Intelligent electronic well lid system - Google Patents
Intelligent electronic well lid system Download PDFInfo
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- CN113756369B CN113756369B CN202111316577.XA CN202111316577A CN113756369B CN 113756369 B CN113756369 B CN 113756369B CN 202111316577 A CN202111316577 A CN 202111316577A CN 113756369 B CN113756369 B CN 113756369B
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/12—Manhole shafts; Other inspection or access chambers; Accessories therefor
- E02D29/14—Covers for manholes or the like; Frames for covers
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/12—Manhole shafts; Other inspection or access chambers; Accessories therefor
- E02D29/14—Covers for manholes or the like; Frames for covers
- E02D29/1427—Locking devices
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/12—Manhole shafts; Other inspection or access chambers; Accessories therefor
- E02D29/14—Covers for manholes or the like; Frames for covers
- E02D29/1481—Security devices, e.g. indicating unauthorised opening
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D33/00—Testing foundations or foundation structures
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- G16Y10/35—Utilities, e.g. electricity, gas or water
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- G16Y—INFORMATION AND COMMUNICATION TECHNOLOGY SPECIALLY ADAPTED FOR THE INTERNET OF THINGS [IoT]
- G16Y40/00—IoT characterised by the purpose of the information processing
- G16Y40/10—Detection; Monitoring
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- G—PHYSICS
- G16—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR SPECIFIC APPLICATION FIELDS
- G16Y—INFORMATION AND COMMUNICATION TECHNOLOGY SPECIALLY ADAPTED FOR THE INTERNET OF THINGS [IoT]
- G16Y40/00—IoT characterised by the purpose of the information processing
- G16Y40/20—Analytics; Diagnosis
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2600/00—Miscellaneous
- E02D2600/10—Miscellaneous comprising sensor means
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Abstract
The invention discloses an intelligent electronic well lid, which effectively solves the problem of false locking of the well lid in the prior art when a water level signal is inaccurate, a comparison detection circuit of the invention detects the water level signal in a cable channel by using a liquid level sensor U1, performs subtraction operation on the water level signal, then starts an integral comparison circuit, transmits the water level signal to the integral comparison circuit, integrates and compares the water level signal by using the integral comparison circuit to obtain a comparison signal, the comparison signal starts a comprehensive control circuit, the comprehensive starting circuit respectively starts an automatic drainage pump and a manual drainage pump, and simultaneously controls the well lid by using a well lid controller and outputs an alarm signal to a control center, thereby realizing intelligent control on the well lid, ensuring the safety of cables in the cable channel and further ensuring the electricity utilization safety of people.
Description
Technical Field
The invention relates to the technical field of well lids, in particular to an intelligent electronic well lid.
Background
With the gradual increase of the ground entry rate of high-voltage cables and the rapid development of underground cable channel construction, the number of cable channel inspection wells is increasing, the layout is regionally dispersed, the well covers are mostly positioned on road surfaces or sidewalks, the problems of external force damage such as electric power facility theft by lawbreakers, construction and illegal excavation are often faced, the management work difficulty of a power supply department is increasing, the daily operation management work is simply dependent on manual patrol and is difficult to supervise in place in real time, meanwhile, the current traditional monitoring well cover has a single function, the effective fusion of the cable channel state and the cable body state monitoring cannot be realized, resources cannot be fully utilized, and the reliable and stable operation of the high-voltage cables is seriously influenced.
A large number of intelligent well lids have appeared in the prior art, and various sensors, technologies such as internet of things communication and cellular communication are integrated, but the intelligent well lids in the prior art lack a safety identification link, and when an operator performs downhole operation, various factors such as gas concentration, temperature and water level in a channel affect the personal safety of the operator.
The present invention therefore provides a new solution to this problem.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide an intelligent electronic well lid, which effectively solves the problem of false locking of the well lid in the prior art when a water level signal is inaccurate.
The utility model provides an intelligence electron well lid system, includes the electron well lid, is located the cable channel of electron well lid below, is located inside sensor module and the remote control platform of cable channel, the electron well lid includes thing networking module, cellular communication module and control module, the sensor module passes through thing networking module and electron well lid wireless communication, cellular communication module and remote control platform wireless communication, thing networking module and the wired/wireless connection of cellular communication module.
The sensor module comprises a gas sensor, a temperature sensor and a water level sensor, wherein the gas sensor is a CO sensor, the temperature sensor measures the internal temperature of the cable channel, and the water level sensor measures the water level of the cable channel.
The electron well lid still includes the electronic lock, the wired/wireless connection of electronic lock and control module, thing networking module and honeycomb communication module all link to each other with control module, and all modules are all through dry battery power supply.
An intelligent electronic manhole cover system control method, comprising:
s1: a maintenance worker holds the mobile operation end by hand to request to be connected with the electronic well lid Internet of things module;
s2: the Internet of things module transmits the signal to the cellular communication module and transmits the signal to the remote control platform through the cellular communication module;
s3: the remote control platform sends the confirmed unlocking information to the cellular communication module, and the control module comprehensively judges whether the electronic lock is opened or not according to the danger level of the cable channel while receiving the unlocking information.
Cable channel hazard class D = TS × GS + TS + GS + WS, where TS is a threshold temperature, GS is a threshold gas concentration, and WS threshold is a water level;
when TS < T1, TS is 0; when TS > T1, TS is 0.5, when TS > T2, TS is 1, wherein T2> T1;
when GS < G1, GS is 0; when GS > G1, GS is 0.5, when GS > G2, GS is 1, wherein G2> G1;
when WS < W1, WS is 0; when WS > W1, WS is 0.5, when WS > W2, WS is 1, wherein W2> W1;
when D is less than 1, the cable channel is safe, when D is more than or equal to 1 and less than or equal to 1.5, the cable channel is early-warned, and when D is more than 1.5, the cable channel is dangerous;
when D is less than 1, the electronic lock is normally opened, when D is more than or equal to 1 and less than or equal to 1.5, the electronic lock is normally opened, but the maintenance personnel is prompted to pay attention, and when D is more than 1.5, the electronic lock cannot be opened and prompts the maintenance personnel.
The control module also comprises a detection operation circuit, an integral comparison circuit and a comprehensive control circuit which are used for independently processing the water level signal in the channel, and the automatic draining pump and the manual draining pump are started step by step according to whether the water level signal is at a high level, so that whether the water level signal has a descending trend after the draining pump is started is judged, and if the water level signal does not have the descending trend, the electronic lock is forcibly opened.
Due to the adoption of the technical scheme, compared with the prior art, the invention has the following advantages:
(1) set up the dangerous grade of cable channel, through temperature signal, the dangerous condition in the passageway is judged to water level signal and gas concentration signal, closes the electronic lock when reaching dangerous grade in the passageway, even remote platform agrees also automatic prevention maintainer that gets into the well that the maintainer gets into the well, protection personal safety.
(2) This application computational formula synthesizes the three factor, embodies the three factor alone simultaneously again, can embody a plurality of factors and to the mutual influence of cable channel inside integrated environment, can embody the influence of single factor to internal environment again, for current computational formula, more scientific and reasonable.
(3) The control module also comprises a detection operation circuit, an integral comparison circuit and a comprehensive control circuit which are used for independently processing water level signals in the channel, the water level rises too fast when the urban inland inundation is coped with, and when the drainage pump does not discharge water normally, the control module selectively and forcibly opens the electronic lock according to the water level rising situation, so that constructors can quickly repair the drainage pump, and the time delay is avoided.
Drawings
Fig. 1 is a schematic circuit diagram of embodiment 2 of the present invention.
Detailed Description
The foregoing and other technical and other features and advantages of the invention will be apparent from the following detailed description of the embodiments, which proceeds with reference to fig. 1. 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.
Example 1: the utility model provides an intelligence electron well lid system, includes the electron well lid, is located the cable channel of electron well lid below, is located inside sensor module and the remote control platform of cable channel, the electron well lid includes thing networking module, cellular communication module and control module, the sensor module passes through thing networking module and electron well lid wireless communication, cellular communication module and remote control platform wireless communication, thing networking module and the wired/wireless connection of cellular communication module.
The sensor module comprises a gas sensor, a temperature sensor and a water level sensor, wherein the gas sensor is a CO sensor, the temperature sensor measures the internal temperature of the cable channel, and the water level sensor measures the water level of the cable channel.
The electron well lid still includes the electronic lock, the wired/wireless connection of electronic lock and control module, thing networking module and honeycomb communication module all link to each other with control module, and all modules are all through dry battery power supply.
An intelligent electronic manhole cover system control method, comprising:
s1: a maintenance worker holds the mobile operation end by hand to request to be connected with the electronic well lid Internet of things module;
s2: the Internet of things module transmits the signal to the cellular communication module and transmits the signal to the remote control platform through the cellular communication module;
s3: the remote control platform sends the confirmed unlocking information to the cellular communication module, and the control module comprehensively judges whether the electronic lock is opened or not according to the danger level of the cable channel while receiving the unlocking information.
Cable channel hazard class D = TS × GS + TS + GS + WS, where TS is a threshold temperature, GS is a threshold gas concentration, and WS threshold is a water level;
when TS < T1, TS is 0; when TS > T1, TS is 0.5, when TS > T2, TS is 1, wherein T2> T1, T1 and T2 all represent real-time temperatures;
when GS < G1, GS is 0; GS is 0.5 when GS > G1, and 1 when GS > G2, where G2> G1, G1, and G2 all represent real-time gas concentrations;
when WS < W1, WS is 0; when WS > W1, WS is 0.5, when WS > W2, WS is 1, wherein W2> W1, W1 and W2 all represent real-time water levels;
when D is less than 1, the cable channel is safe, when D is more than or equal to 1 and less than or equal to 1.5, the cable channel is early-warned, and when D is more than 1.5, the cable channel is dangerous;
when D is less than 1, the electronic lock is normally opened, when D is more than or equal to 1 and less than or equal to 1.5, the electronic lock is normally opened, but the maintenance personnel is prompted to pay attention to carrying the protective tool, and when D is more than 1.5, the electronic lock cannot be opened and the maintenance personnel is prompted to forbid getting into the well.
Wherein the temperature, gas concentration or water level reaches an alert level when TS > T1, GS > G1, WS > W1, respectively, and a dangerous level when TS > T2, GS > G2, and WS > W2, respectively.
The cable channel hazard ratings are as shown in the following table:
| water level | Temperature of | Gas (es) | Hazard class |
| 0 | 0 | 0 | 0 |
| 0 | 0 | 0.5 | 0.5 |
| 0 | 0 | 1 | 1 |
| 0 | 0.5 | 0.5 | 1 |
| 0 | 0.5 | 1 | 1.5 |
| 0.5 | 0.5 | 0.5 | 1.625 |
| 0.5 | 0.5 | 1 | 2.25 |
| 0.5 | 1 | 1 | 3 |
| 1 | 1 | 1 | 4 |
Wherein the table above lists only one of the situations which represents the ultimate reflection of the cable channel hazard level in the event that any one or two or three of the water level signal, the temperature signal and the gas concentration signal reach the alert level, the hazard level.
Due to the fact that the environment of the cable channel is complex, although the cable channel in the prior art is provided with the exhaust fan, the water pump and other devices, when the water level in the cable channel is too high, or the temperature is too high or the gas concentration is too high to be dissipated, and at the moment, when maintenance personnel go down for maintenance, personal safety risks can be met.
Example 2: meanwhile, according to statistics, inside the cable channel, most faults are caused by overhigh water level, especially under the influence of extreme weather such as urban waterlogging in summer, the inside of the cable channel often causes faults due to excessive accumulated water, the control method in the embodiment 1 is suitable for basically all conditions, but when the urban waterlogging occurs, in order to avoid that the control module locks the well lid by using the electronic lock, the rescue work of rescue workers is influenced, the control module further comprises a detection operation circuit, an integral comparison circuit and a comprehensive control circuit which are used for independently processing water level signals in the channel.
The detection and operation circuit uses a liquid level sensor U1 to replace a float ball liquid level switch as a water level detection sensor to detect a water level signal in a cable channel, the liquid level sensor U1 can use any ultrasonic liquid level sensor in the prior art, the output of which is analog voltage, the prior art is adopted, and details are not repeated, a resistor R1 transmits the water level signal detected by the liquid level sensor U1 to an operational amplifier U2A, the operational amplifier U2A carries out input buffering on the water level signal and transmits the water level signal to the operational amplifier U5A in two paths, one path directly transmits the water level signal to the same-phase end of the operational amplifier U5A, the other path transmits the water level signal to the opposite-phase end of the operational amplifier U5A after being delayed by the resistor R2 and a capacitor C1, the operational amplifier U5A carries out subtraction operation on the two paths of water level signals to obtain a water level change value in the cable channel, when the operational amplifier U5A cannot conduct a triode Q1, the water level in the cable channel does not rise at the moment, the water level does not need to be processed, when the operational amplifier U5A conducts the triode Q1, the water level in the cable channel rises, at the moment, the triode Q1 conducts the diode D2, and the integral comparison circuit is started;
the detection operation circuit comprises a resistor R1, one end of a resistor R1 is connected with a pin 2 of a liquid level sensor U1, a pin 1 of the liquid level sensor U1 is respectively connected with one end of a resistor R4 and a positive polarity power supply VCC, the other end of the resistor R1 is connected with the in-phase end of an operational amplifier U2A, the inverting end of the operational amplifier U2A is respectively connected with the output end of the operational amplifier U2A, one end of a resistor R2, the inverting end of the operational amplifier U5A and one end of a resistor R3, the in-phase end of the operational amplifier U5A is respectively connected with the other end of a resistor R2, one end of a capacitor C1 and the output end of an operational amplifier U5A are connected with the base electrode of a triode Q1, the collector electrode of the triode Q1 is respectively connected with the other end of a resistor R4 and the anode of a diode D2, the emitter electrode of the triode Q1 is connected with one end of a resistor R7, and the other end of the resistor R7 is respectively connected with the other end of a resistor R3, the other end of the capacitor C1 and a pin 3 of a liquid level sensor U1 and connected with the ground in parallel.
The integral comparison circuit utilizes a diode D2 in a detection operation circuit to conduct, a diode D2 and a capacitor C1 to conduct a thyristor Q2, a thyristor Q2 transmits a water level signal to an operational amplifier U8A through a resistor R8, an operational amplifier U8A, a capacitor C3 and a capacitor C5 integrate the water level signal, the detected water level signal is observed to have a tendency of rising continuously by mistake, if the operational amplifier U8A cannot conduct a voltage regulator D1, the water level does not have the tendency of rising continuously at the moment, the water level is safe at the moment, the water level signal does not need to be processed next step, when the operational amplifier U8A conducts the voltage regulator D1, the water level signal has the tendency of rising continuously at the moment, the next step of processing is needed, the voltage regulator D1 conducts a thyristor Q4 through a capacitor C4, the thyristor Q4 transmits the water level signal to operational amplifiers U7A and U4A through a resistor R16, the operational amplifier U A and the operational amplifier U A form a comparator window, comparing the water level signal with an emergency threshold and a danger threshold, forming a voltage division circuit by using a resistor R10, a resistor R11 and a resistor R13 to respectively provide the emergency threshold and the danger threshold of the water level for the operational amplifier U7A and the operational amplifier U4A, wherein the amplitude of the emergency threshold and the represented water level value are greater than the amplitude of the danger threshold and the represented water level value, outputting a comparison signal by a window comparator, and outputting the comparison signal to a comprehensive control circuit;
the integral comparison circuit comprises a capacitor C2, one end of the capacitor C2 is respectively connected with a control electrode of a thyristor Q2 and a negative electrode of a diode D2 in the detection operation circuit, an anode of the thyristor Q2 and an inverting terminal of an operational amplifier U5A in the detection operation circuit, a cathode of a thyristor Q2 is respectively connected with one end of a resistor R8 and an anode of a thyristor Q4, the other end of a resistor R8 is respectively connected with one end of a capacitor C5 and an inverting terminal of an operational amplifier U8A, the inverting terminal of the operational amplifier U8A is respectively connected with one end of a resistor R6 and one end of a capacitor C3, an output end of the operational amplifier U8A is respectively connected with the other end of the capacitor C A, the negative electrode of a voltage regulator D A, and the positive electrode of the voltage regulator D A are respectively connected with one end of the capacitor C A and the control electrode of the thyristor Q A, the cathode of the thyristor Q A is connected with one end of the inverting terminal of the resistor R A, the inverting terminal of the operational amplifier U A and the inverting terminal of the adjustable operational amplifier U A are respectively connected with the inverting terminal of the operational amplifier U A, the right end of the resistor R13 is connected with the other end of the capacitor C4, the other end of the resistor R6, the other end of the capacitor C5, the other end of the capacitor C2 and the other end of the resistor R7 in the detection arithmetic circuit and connected with the ground, the left end of the resistor R13 is connected with one end of the resistor R11, the other end of the resistor R11 is connected with one end of the resistor R10 and the non-inverting end of the operational amplifier U7A, and the other end of the resistor R10 is connected with the other end of the resistor R4 in the detection arithmetic circuit and connected with the positive power supply VCC.
The integrated control circuit respectively utilizes the diode D3, the diode D4 and the NOT gate U6A to receive comparison signals, when the comparison signals do not conduct the diode D3 and the diode D4, and the comparison signals acted by the NOT gate U6A are output to the 11 pin of the OR gate U3C to be low level, the comparison signals indicate that the operational amplifier U4A outputs low level at the moment, the operational amplifier U7A outputs high level at the moment, namely, the water level does not reach a danger threshold at the moment, the OR gate U3C outputs low level at the moment, the resistor R15 does not need to start the automatic drainage pump, when the comparison signals conduct the diode D3 and the comparison signals of low level are received by the 11 pin of the NOT gate U6A and output to the OR gate U3C, namely, the water level reaches the danger threshold but does not reach the emergency threshold at the moment, the OR gate U3C outputs high level at the moment, the automatic drainage pump is started by the resistor R15 to start drainage for starting to start the drainage for the cable channel, the safety is ensured, and the alarm signal U9C is output at the moment, reminding a remote control platform that the water level in a cable channel is above a dangerous threshold but does not reach the level of an emergency threshold, maintaining the cable channel, starting a control module through a pin 3 and a pin 2 connected with a switch S2 by a resistor R15 and a diode D5, locking a well lid at the moment, avoiding the occurrence of the situation that the well lid is moved and a person enters the cable channel by mistake, switching on the diode D3 by a comparison signal, outputting a comparison signal of a high level to a pin 11 of an OR gate U3C through a NOT gate U6A, indicating that the water level reaches the emergency threshold at the moment, immediately increasing the force to drain the cable channel, outputting the high level through the resistor R15 by the OR gate U3C at the moment, starting an automatic drain pump through a water level signal of a relay K1, closing the switch S1 by the relay K1, starting a manual drain pump through the resistor R18 by the water level signal, and simultaneously performing the automatic drain pump and the manual drain work (the manual work is different from the automatic drain pump The manual draining pump can be started only by pressing a switch key by a worker and is applied to a state that the water level reaches an emergency threshold value), the control module still locks the well cover at the moment, the condition that the personnel mistakenly enter a cable channel is avoided, meanwhile, the safety of a cable in the cable channel is ensured, an OR gate U9C outputs an alarm signal at the moment, the water level in the cable channel of the remote control platform is reminded to reach the level of the emergency threshold value, the cable channel needs to be emergently maintained, further, the safety of the cable in the cable channel is ensured, the resistor R12 and the capacitor C6 delay the alarm signal, the triode Q3 is delayed, the relay K2 is conducted after the triode Q3 is started, the 2 pin of the relay is disconnected with the 3 pin, the 1 pin is connected, at the moment, a comparison signal is transmitted to the diode D5 through the thyristor Q5, and if the diode D5 is still conducted by the diode D4 at the moment, the water in the cable channel cannot be effectively drained only by the automatic draining pump and the manual draining pump at the moment, rescue workers need to enter the cable channel to help draining, and the diode D5 opens the well cover through another control module at the moment, so that the rescue workers enter the cable channel and accelerate the water level to fall;
the comprehensive control circuit comprises a diode D3, the anode of a diode D3 is connected with the output end of an operational amplifier U4A in an integral comparison circuit, the cathode of the diode D3 is connected with the 10 pin of an OR gate U3C, the 11 pin of an OR gate U3C is connected with the output end of a NAND gate U6A, the input end of a NOT gate U6A is respectively connected with the anode of the diode D4, the output end of the operational amplifier U7A in the integral comparison circuit, or the output end of a gate U3C is connected with one end of a resistor R15, the other end of the resistor R15 is respectively connected with an automatic drainage pump, the 11 pin of the OR gate U9C and one end of the 3 pin of a switch S2, the other end of the 3 pin of the switch S2 is connected with one end of the 2 pin of a switch S2, the other end of the 2 pin of the switch S2 is connected with the anode of a diode D5, the cathode of a diode D5 is connected with a control module, or the output end of the gate U9C is connected with one end of a remote control platform and one end of the resistor R12, the pin 10 of the or gate U9C is connected to the manual drain pump and one end of the resistor R18, the other end of the resistor is connected to one end of the switch S1, the other end of the switch S1 is connected to one end of the relay K1, the negative electrode of the diode D4 and the anode of the thyristor Q5, the cathode of the thyristor Q5 is connected to one end of the pin 1 of the switch S2, the control electrode of the thyristor Q5 is connected to one end of the diac D7, the other end of the diac D7 is connected to the collector of the triode Q3 and one end of the relay K2, the other end of the relay K2 is connected to the positive power source VCC, the emitter of the triode Q3 is connected to one end of the resistor R17, the base of the triode Q3 is connected to one end of the capacitor C6 and the other end of the resistor R12, the other end of the relay K1 is connected to the other end of the capacitor C6, the other end of the integral comparator circuit, the resistor R17 and the other end of the capacitor C4, The other end of the resistor R7 in the detection arithmetic circuit is connected and grounded.
When the invention is used in detail, the detection and operation circuit transmits a water level signal detected by a liquid level sensor U1 to an operational amplifier U2A by using a resistor R1, the operational amplifier U2A transmits the water level signal to an operational amplifier U5A in two paths, the operational amplifier U5A performs subtraction operation on the two paths of water level signals to obtain a water level change value in a cable channel, when the operational amplifier U5A cannot conduct a triode Q1, the water level in the cable channel does not rise at the moment, water level processing is not needed, when the operational amplifier U5A conducts a triode Q1, the water level in the cable channel rises, at the moment, the triode Q1 conducts a diode D2, an integral comparison circuit is started, the integral comparison circuit conducts a thyristor D2 in the detection and operation circuit, the thyristor D2 and a capacitor C1 conduct Q2, and the Q2 transmits the water level signal to the operational amplifier U8 through a resistor R8, the operational amplifier U8A, the capacitor C3 and the capacitor C5 integrate the water level signal, if the operational amplifier U8A can not conduct the voltage regulator tube D1, the water level signal does not have the trend of continuously rising at this time, the water level signal does not need to be processed next step, when the operational amplifier U8A conducts the voltage regulator tube D1, the water level signal has the trend of continuously rising at this time, the water level signal at this time needs to be processed next step, the voltage regulator tube D1 conducts the thyristor Q4 through the capacitor C4, the thyristor Q4 transmits the water level signal to the operational amplifier U7A and the operational amplifier U4A through the resistor R16, the operational amplifier U7A and the operational amplifier U4A form a window comparator, the water level signal is compared with an emergency threshold value and a danger threshold value, the window comparator outputs a comparison signal and outputs the comparison signal to a comprehensive control circuit, the comprehensive control circuit receives the comparison signal, and when the comparison signal does not conduct the diode D3 and the diode D4, meanwhile, when the 11 pin of the or gate U3C is at a low level, the or gate U3C outputs a low level, the resistor R15 does not need to start the automatic draining pump, when the comparison signal turns on the diode D3, the comparison signal is outputted to the 11 pin of the or gate U3C through the not gate U6A and received as a low level comparison signal, the or gate U3C outputs a high level, the resistor R15 starts the automatic draining pump to start draining water for the cable channel, so as to ensure the cable safety, the or gate U9C outputs an alarm signal to the remote control platform, and the resistor R15 starts the control module through the switch S2 and the diode D5, at this time, the well lid is locked, so as to avoid the situation that the well lid is moved by a person mistakenly entering the cable channel, and when the comparison signal turns on the diode D3, the comparison signal is outputted to the 11 pin of the or gate U3C through the not gate U6A and received as a high level comparison signal, which indicates that the water level reaches the emergency threshold, the force is required to be increased immediately for draining the cable channel, at the moment, the or gate U3C outputs a high level to start the automatic draining pump through the resistor R15, the water level signal is conducted through the relay K1, the relay K1 enables the switch S1 to be closed, the water level signal enables the manual draining pump through the resistor R18, the automatic draining pump and the manual draining pump are used for simultaneously draining, at the moment, the or gate U9C outputs an alarm signal to a remote control platform, the safety of the cable in the cable channel is further ensured, the alarm signal delays to turn on the triode Q3 after passing through the resistor R12 and the capacitor C6, the triode Q3 conducts the relay K2, the comparison signal is transmitted to the diode D5 through the thyristor Q5, if the diode D5 is still conducted by the diode D4 at the moment, the situation is indicated that water in the cable channel cannot be effectively drained only through the automatic draining pump and the manual draining pump, rescue workers need to enter the cable channel to help, at the moment, the diode D5 controls another module to open the well cover, so that rescue workers enter the cable channel to accelerate the water level to descend;
the liquid level sensor U1 is arranged to replace a floating ball liquid level switch to be used as a water level detection sensor to detect a water level signal in a cable channel, the inaccuracy of the water level signal received by a remote control platform caused by the floating ball liquid level switch is reduced, the problem of inaccurate water level signal detected by the floating ball liquid level switch as the water level detection sensor in the prior art is avoided, the accuracy of a water level detection unit is improved, meanwhile, the problem of misoperation of an automatic drainage pump is also avoided, the problem of false locking of the well lid in the prior art when the water level signal is inaccurate is effectively solved, a manual drainage pump is started on the basis of the automatic drainage pump, the drainage force is increased to be that of the cable channel, the safety of cables in the cable channel is ensured, the power utilization safety of people is further ensured, and meanwhile, a control module is started to lock the well lid, the condition that personnel mistakenly enter the cable channel is avoided, the safety of the personnel is ensured, the detection operation circuit and the integral comparison circuit are arranged to clearly detect whether the water level has the ascending trend and the state of the water level, when the water level does not have the ascending trend and the water level safety, the automatic draining pump is not started, the phenomenon that the automatic draining pump does no work is avoided, the automatic draining pump and the manual draining pump are gradually started by utilizing a window comparator in the integral comparison circuit, the reasonable utilization of the automatic draining pump and the manual draining pump is realized, the alarm signal is delayed in the comprehensive control circuit and the comparison signal is detected, whether the water level in the cable channel descends after being drained by the automatic draining pump and the manual draining pump at the moment can be known, if the water level does not descend, the diode D5 enables the control module to open the well cover, so that rescue personnel enter the cable channel, the water level descends with higher speed, and then realizes the effective control to the well lid, avoids the well lid to be locked, influences the rescue work of rescue personnel, avoids influencing cable safety.
Claims (6)
1. An intelligent electronic well lid system is characterized by comprising an electronic well lid, a cable channel positioned below the electronic well lid, a sensor module positioned in the cable channel and a remote control platform, wherein the electronic well lid comprises an internet of things module, a cellular communication module and a control module;
the control module also comprises a detection operation circuit, an integral comparison circuit and a comprehensive control circuit which are used for independently processing the water level signal in the channel, and the control module further judges whether the water level signal has a descending trend after the drainage pump is opened according to whether the water level signal is at a high level or not, and forcibly opens the electronic lock if the water level signal does not have the descending trend;
the detection operation circuit comprises a resistor R1, one end of a resistor R1 is connected with a pin 2 of a liquid level sensor U1, a pin 1 of the liquid level sensor U1 is respectively connected with one end of a resistor R4 and a positive polarity power supply VCC, the other end of the resistor R1 is connected with the same phase end of an operational amplifier U2A, the reverse phase end of the operational amplifier U2A is respectively connected with the output end of the operational amplifier U2A, one end of a resistor R2, the same phase end of the operational amplifier U5A and one end of a resistor R3, the reverse phase end of the operational amplifier U5A is respectively connected with the other end of a resistor R2, one end of a capacitor C1, the output end of an operational amplifier U5A is connected with the base electrode of a triode Q1, the collector electrode of the triode Q1 is respectively connected with the other end of a resistor R4 and the anode of a diode D2, the emitter electrode of a triode Q1 is connected with one end of a resistor R7, the other end of the resistor R7 is respectively connected with the other end of a resistor R3, the other end of the capacitor C1 and a pin 3 of a liquid level sensor U1 and connected in parallel with the ground;
the integral comparison circuit comprises a capacitor C2, one end of the capacitor C2 is respectively connected with a control electrode of a thyristor Q2 and a negative electrode of a diode D2 in the detection operation circuit, the anode of the thyristor Q2 is connected with a non-inverting end of an operational amplifier U5A in the detection operation circuit, the cathode of a thyristor Q2 is respectively connected with one end of a resistor R8 and the anode of the thyristor Q4, the other end of a resistor R8 is respectively connected with one end of the capacitor C5 and the non-inverting end of an operational amplifier U8A, the inverting end of the operational amplifier U8A is respectively connected with one end of a resistor R6 and one end of a capacitor C3, the output end of the operational amplifier U8A is respectively connected with the other end of the capacitor C3 and the negative electrode of a voltage regulator D1, the positive electrode of the voltage regulator D1 is respectively connected with one end of the capacitor C4 and the control electrode of the thyristor Q4, the cathode of the resistor Q4 is connected with one end of the resistor R16, the other end of the resistor R16 is respectively connected with the inverting end of the operational amplifier U7A and the inverting end of the non-inverting end of the operational amplifier U4A, the inverting end of the operational amplifier U4A is connected to the adjustable end of the resistor R13, the right end of the resistor R13 is connected to the other end of the capacitor C4, the other end of the resistor R6, the other end of the capacitor C5, the other end of the capacitor C2 and the other end of the resistor R7 in the detection arithmetic circuit respectively and is connected to the ground, the left end of the resistor R13 is connected to one end of the resistor R11, the other end of the resistor R11 is connected to one end of the resistor R10 and the non-inverting end of the operational amplifier U7A respectively, and the other end of the resistor R10 is connected to the other end of the resistor R4 in the detection arithmetic circuit and is connected to the positive power supply VCC.
2. The intelligent electronic well lid system of claim 1, wherein the sensor module comprises a gas sensor, a temperature sensor and a water level sensor, the gas sensor is a CO sensor, the temperature sensor measures the temperature inside the cable channel, and the water level sensor measures the water level inside the cable channel.
3. The intelligent electronic well lid system of claim 1, wherein the electronic well lid further comprises an electronic lock, the electronic lock is connected with the control module in a wired/wireless manner, the internet of things module and the cellular communication module are connected with the control module, and all the modules are powered by dry batteries.
4. An intelligent electronic manhole cover system control method, wherein the intelligent electronic manhole cover system is the intelligent electronic manhole cover system according to any one of claims 1 to 3, and the method comprises the following steps: s1: a maintenance worker holds the mobile operation end by hand to request to be connected with the electronic well lid Internet of things module;
s2: the Internet of things module transmits the signal to the cellular communication module and transmits the signal to the remote control platform through the cellular communication module;
s3: the remote control platform sends the confirmed unlocking information to the cellular communication module, and the control module judges whether the electronic lock is opened or not according to the comprehensive condition of the danger level of the cable channel while receiving the unlocking information.
5. The method of claim 4, wherein the cable channel hazard level D = TS GS WS + TS + GS + WS, wherein TS is a threshold temperature, GS is a threshold gas concentration, and WS is a threshold water level;
when TS < T1, TS is 0; when TS > T1, TS is 0.5, when TS > T2, TS is 1, wherein T2> T1;
when GS < G1, GS is 0; when GS > G1, GS is 0.5, when GS > G2, GS is 1, wherein G2> G1;
when WS < W1, WS is 0; WS is 0.5 when WS > W1, and WS > W2, WS is 1, wherein W2> W1.
6. The intelligent electronic well lid system control method of claim 5, wherein when D <1, the electronic lock is normally opened, when D is more than or equal to 1 and less than or equal to 1.5, the electronic lock is normally opened, but the maintenance personnel is prompted to notice that when D is more than 1.5, the electronic lock cannot be opened, and the maintenance personnel is prompted to prohibit going into the well.
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| GB0306406D0 (en) * | 2003-03-20 | 2003-04-23 | Saint Gobain Pipelines Plc | Improvements in or relating to surface access covers |
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