CN113013778B - Cable tunnel video visual monitoring system and method - Google Patents
Cable tunnel video visual monitoring system and method Download PDFInfo
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- CN113013778B CN113013778B CN202110229121.3A CN202110229121A CN113013778B CN 113013778 B CN113013778 B CN 113013778B CN 202110229121 A CN202110229121 A CN 202110229121A CN 113013778 B CN113013778 B CN 113013778B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G1/00—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
- G06F16/70—Information retrieval; Database structures therefor; File system structures therefor of video data
- G06F16/73—Querying
- G06F16/738—Presentation of query results
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
- G10L15/00—Speech recognition
- G10L15/22—Procedures used during a speech recognition process, e.g. man-machine dialogue
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/00309—Overheat or overtemperature protection
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/0031—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using battery or load disconnect circuits
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0063—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with circuits adapted for supplying loads from the battery
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
- H02J7/345—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering using capacitors as storage or buffering devices
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/061—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for DC powered loads
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/068—Electronic means for switching from one power supply to another power supply, e.g. to avoid parallel connection
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
Abstract
The invention discloses a cable tunnel video visual monitoring system and a cable tunnel video visual monitoring method. The system comprises a monitoring device, a monitoring device and a control device, wherein the monitoring device is used for acquiring video information of a cable tunnel and identifying persons entering the tunnel based on a face picture of the persons entering the tunnel in the video information; judging the damage condition of the cable sheath and the surface water accumulation condition based on the visible light picture in the tunnel in the video information, issuing a cable sheath damage notification and marking the water accumulation position and water accumulation information on a GIS map; the power supply module is connected with the monitoring device; the power supply module comprises at least one charging circuit, a preset number of charging management chips connected in parallel are connected in series on each charging circuit, and the charging management chips are connected with the microcontroller; the microcontroller is used for controlling the starting number of the charging management chips according to the capacity of the corresponding energy storage element in the power supply module, controlling the starting and stopping of the corresponding charging management chips according to the current temperature of the charging management chips, and achieving time-sharing heat dissipation of the charging management chips.
Description
Technical Field
The invention belongs to the technical field of cable tunnel visual monitoring, and particularly relates to a cable tunnel video visual monitoring system and method.
Background
The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art.
The power supply system of the existing cable tunnel visual monitoring system uses induction to get electricity or lay a special power supply line, and the inventor finds that the following problems exist in the existing visual monitoring aspect:
(1) The existing visual monitoring system cannot dynamically adjust the running quantity and dynamic heat dissipation of the charging management chip according to the real-time running state of the charging management chip, so that the charging process of the visual monitoring system is slow, and the normal use of the visual monitoring system is influenced.
(2) The interval of the shooting time of the current visual monitoring system is fixed, if the shooting time interval is too long, the real-time performance is poor, and the field situation cannot be continuously known; if the shooting time interval is too short, the power consumption of the system is much higher, and the emergency situation of the cable tunnel field cannot be obtained in real time only by image acquisition.
(3) At present, water level in the tunnel is sensed by a water level sensor and drained by a water pump; the area and the influence range of the surface accumulated water cannot be estimated, how long time is required for subsequently discharging the accumulated water, the accumulated water cannot be visually perceived, and the water regime needs to be confirmed manually on site; at present, whether the cable is damaged or not is judged mainly according to the vibration of the vibration optical fiber, and whether the cable is damaged or not and whether the damage is rechecked and confirmed cannot be judged.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides a cable tunnel video visual monitoring system and a cable tunnel video visual monitoring method, which can improve the power supply stability and the use efficiency of the cable tunnel video visual monitoring system.
In order to achieve the above object, one or more embodiments of the present invention provide the following technical solutions:
a first aspect of the present disclosure provides a cable tunnel video visualization monitoring system, including:
the monitoring device is used for acquiring video information of the cable tunnel and identifying people entering the tunnel based on a human face picture entering the tunnel in the video information; judging the damage condition of the cable sheath and the surface water accumulation condition based on the visible light picture in the tunnel in the video information, issuing a cable sheath damage notification and marking the water accumulation position and water accumulation information on a GIS map;
the power supply module is connected with the monitoring device; the power supply module comprises at least one charging circuit, each charging circuit is connected with a preset number of charging management chips connected in parallel in series, and the charging management chips are connected with the microcontroller; the microcontroller is used for controlling the starting number of the charging management chips according to the capacity of the corresponding energy storage element in the power supply module, controlling the starting and stopping of the corresponding charging management chips according to the current temperature of the charging management chips, and achieving time-sharing heat dissipation of the charging management chips.
As an embodiment, the power supply module is further connected with an induction power taking device, and the power supply module includes: the induction electricity taking device is respectively connected with the input ends of the super capacitor and the battery through two charging circuits, and the output ends of the super capacitor and the battery are both connected to the standby power supply gating circuit; the standby power supply gating circuit is used for controlling whether a super capacitor or a battery is adopted to supply power for the post-stage circuit.
As an embodiment, the number of parallel charging management chips connected in series between the induction power taking device and the super capacitor is determined by the capacity of the super capacitor; the number of the parallel charging management chips connected in series between the induction electricity taking device and the battery is determined by the capacity of the battery.
As an implementation manner, the power supply module further includes a charging management unit, configured to obtain an output voltage of the induction power-taking device and a battery power, charge the super capacitor if the output voltage of the induction power-taking device reaches a first preset voltage, and charge the battery simultaneously if the current battery power is not full.
As an embodiment, the standby power gating circuit supplies power by using the super capacitor when the voltage of the super capacitor is higher than a second preset voltage; and when the voltage of the super capacitor is lower than a third preset voltage, the super capacitor is switched to supply power for the battery.
As an embodiment, the standby power gating circuit includes: the output end of the super capacitor is divided into two paths, one path is connected with the positive input end of the hysteresis comparator, and the other path is connected with the drain electrode of the P-channel MOS tube D1; the source electrode of the D1 is connected with the source electrode of the D2; one path of the output end of the hysteresis comparator is connected with a gate electrode of an N-channel MOS transistor D3, and the other path of the output end of the hysteresis comparator is connected with a gate electrode of an N-channel MOS transistor D6; the drain electrode of the D3 is connected to a connecting line of the gate electrodes of the D1 and the D2 through a resistor R2;
the output end of the battery is connected to the drain electrode of the P-channel MOS tube D4; the source electrode of the D4 is connected with the source electrode of the D5; one path of the drain electrode of the N-channel MOS tube D6 is connected to the drain electrode of the P-channel MOS tube D4 through a resistor R5, and the other path of the drain electrode of the N-channel MOS tube D7 is connected to the gate electrode of the N-channel MOS tube D7; the drain electrode of the D7 is connected to a communication line of the gate electrodes of the D4 and the D5 through a resistor R4;
the drains of the P-channel MOS tube D2 and the P-channel MOS tube D5 are both connected to the DC/DC converter.
As an implementation mode, the source of D1 is divided into three paths, one path is connected to resistor R1, the other path is connected to capacitor C1, and the other path is connected to the source of P-channel MOS transistor D2; the gate pole of the D1 is divided into three paths, one path is connected with the resistor R1, the other path is connected with the capacitor C1, and the other path is connected with the gate pole of the D2; the source electrode of the P-channel MOS tube D4 is divided into three paths, one path is connected with the resistor R3, the other path is connected with the capacitor C2, and the other path is connected with the source electrode of the P-channel MOS tube D5; the gate pole of D4 is divided into three paths, one path is connected with the resistor R3, the other path is connected with the capacitor C2, and the other path is connected with the gate pole of D5.
As an implementation manner, the microcontroller is further configured to monitor a working state of the charging management chip, and automatically turn off the charging management chip if the charging management chip works abnormally.
As an implementation mode, the power supply module is further connected with the sound acquisition module, and the output end of the power supply module is respectively connected with the plurality of functional modules of the monitoring device;
the microcontroller is configured to: controlling the power supply module to select different power supply strategies according to the current electric quantity of the power supply module and the importance and required energy consumption of the plurality of functional modules; and controlling the monitoring direction and the monitoring starting time of the monitoring device according to the sound signal.
As an implementation manner, different power supply strategies are prestored in the microcontroller, which specifically includes:
performance model strategy: the microcontroller supplies power to the functional modules of corresponding grades according to the electric quantity grade of the current electric quantity of the power supply module and the grade of the functional module to be supplied with power by mainly collecting data;
time model strategy: the microcontroller supplies power to the functional modules of corresponding grades according to the electric quantity grade of the current electric quantity of the power supply module and the grade of the functional module to be supplied with power, mainly prolonging the working time of the monitoring system;
general model strategy: when the electric quantity of the power supply module is higher than a set threshold value, selecting a performance model strategy; when the electric quantity of the power supply module is lower than a set threshold value, automatically switching to a time model strategy;
the strategy of the energy storage model is as follows: when the temperature of the power supply module is lower than a set threshold value, starting a heating device to increase the temperature of the power supply module; and when the temperature of the power supply module is higher than the set threshold value, reducing the charging current of the power supply module.
According to the temperature of the power supply module, whether the power supply strategy selects an energy storage model strategy is determined;
and determining whether the power supply strategy selects a performance model strategy, a time model strategy or a general model strategy according to the electric quantity of the power supply module.
In one embodiment, the functional module levels are divided according to the importance and power consumption of the functional module, wherein the functional module with important low power consumption has the highest level, and the functional module with non-important high power consumption has the lowest level.
In one embodiment, the microprocessor establishes a communication connection with a client, and the power supply strategy is modified based on the client's grading information for power and function modules.
As an embodiment, the cable tunnel video visual monitoring system further includes:
and the gas concentration monitoring device is used for acquiring the concentration of flammable and explosive gases in the tunnel in real time, judging the danger degree of the explosion-proof gas under the concentration, linking the corresponding fan to exhaust air and marking the position where the concentration of the explosion-proof gas exceeds the standard on a GIS map.
The second aspect of the present disclosure provides a working method based on the above cable tunnel video visual monitoring system, which includes:
acquiring video information of a cable tunnel, and identifying persons entering the tunnel based on a human face picture entering the tunnel in the video information; judging the damage condition of the cable sheath and the surface water accumulation condition based on the visible light picture in the tunnel in the video information, issuing a cable sheath damage notification and marking the water accumulation position and water accumulation information on a GIS map;
the starting number of the charging management chips is controlled according to the capacity of the corresponding energy storage element in the power supply module, and the starting and stopping of the corresponding charging management chips are controlled according to the current temperature of the charging management chips, so that the time-sharing heat dissipation of the charging management chips is realized.
The invention has the following beneficial effects:
(1) The time-sharing heat dissipation technology is designed, the start and stop of the corresponding charging management chip are controlled according to the current temperature of the charging management chip, the time-sharing heat dissipation of the charging management chip is realized, the problem that the monitoring efficiency of the monitoring system is low in cable tunnel video is solved, the start and stop of the charging management chip along with the temperature change are realized, the utilization rate of the charging management chip is improved, and the efficiency of the monitoring system for monitoring the cable tunnel video is improved.
(2) An environment self-adaptive instant linkage technology is designed, the problem that the system power consumption is high and the scene emergency of the power transmission line cannot be obtained in real time only by image acquisition is solved, the monitoring position and the monitoring starting time of the cable tunnel video by the monitoring device are controlled according to the sound signal, and the efficiency of monitoring the cable tunnel video by the cable tunnel is improved.
(3) The visual perception linkage technology is designed, the problem of low efficiency of video monitoring in the tunnel is solved, the comprehensive monitoring of face recognition, cables and surface water accumulation conditions is realized, and the efficiency of video monitoring in the tunnel and the stable operation of the cables in the tunnel are improved.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the invention and together with the description serve to explain the invention and not to limit the invention.
Fig. 1 is a schematic view of a cable tunnel video visualization monitoring system according to an embodiment of the present invention;
fig. 2 is a schematic view of another cable tunnel video visualization monitoring system according to an embodiment of the present invention;
FIG. 3 is a circuit diagram of a power gating circuit according to an embodiment of the invention.
Detailed Description
It is to be understood that the following detailed description is exemplary and is intended to provide further explanation of the invention as claimed. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the invention. As used herein, the singular forms "a", "an", and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
The embodiments and features of the embodiments of the present invention may be combined with each other without conflict.
Example one
In one or more embodiments, a cable tunnel video visual monitoring system is disclosed, as shown in fig. 1, the cable tunnel video visual monitoring system includes:
the monitoring device is used for acquiring video information of the cable tunnel and identifying people entering the tunnel based on a human face picture entering the tunnel in the video information; judging the damage condition of the cable sheath and the surface water accumulation condition based on the visible light picture in the tunnel in the video information, issuing a cable sheath damage notification and marking the water accumulation position and water accumulation information on a GIS map;
the power supply module is connected with the monitoring device; the power supply module comprises at least one charging circuit, each charging circuit is connected with a preset number of charging management chips connected in parallel in series, and the charging management chips are connected with the microcontroller; the microcontroller is used for controlling the starting number of the charging management chips according to the capacity of the corresponding energy storage element in the power supply module, controlling the starting and stopping of the corresponding charging management chips according to the current temperature of the charging management chips, and achieving time-sharing heat dissipation of the charging management chips.
Specifically, the monitoring device judges whether the person entering and leaving is an operation and maintenance person or an external invader by acquiring face information of the person and through a convolutional neural network-face recognition algorithm.
Specifically, the detection is carried out simultaneously on the cable skin breaking and the surface water accumulation. The monitoring device regularly captures visible light pictures and intelligently analyzes the damage of the cable sheath and the surface water through a machine deep learning algorithm.
If the monitoring device finds that the cable sheath is damaged, the monitoring device informs all the personnel to leave the tunnel immediately through broadcasting, waits for the operation and maintenance personnel to handle the dangerous case, and simultaneously, the security system informs the operation and maintenance personnel of the dangerous case in a short message mode and asks the operation and maintenance personnel to confirm the dangerous case and handle the dangerous case in time.
And in the process of regularly executing the task by the monitoring device, capturing the visible light picture, and then intelligently analyzing the surface water through a machine deep learning algorithm. If through deep learning and pattern recognition algorithm, it has ponding and calculates the ponding area to analyze out the ground, and prison claps device (who finds ponding, who links) linkage level sensor and water pump, according to level sensor conveying water level information and ponding area, predicts water pump drainage time. And simultaneously, the result is sent to a security system, and the position of surface water accumulation and related water accumulation information are marked on a GIS map. And timely treatment is carried out by informing the ground ponding of related operation and maintenance personnel.
In another embodiment, the cable tunnel video visual monitoring system further includes:
and the gas concentration monitoring device is used for acquiring the concentration of flammable and explosive gases in the tunnel in real time, judging the danger degree of the explosion-proof gas under the concentration, linking the corresponding fan to exhaust air and marking the position where the concentration of the explosion-proof gas exceeds the standard on a GIS map.
Specifically, regarding the explosion-proof gas: the gas sensor collects the concentration of inflammable and explosive gases such as oxygen concentration, methane concentration and hydrogen concentration in the tunnel in real time. The concentration of the explosion-proof gas at other positions in the tunnel is collected in real time, the danger degree of the explosion-proof gas under the concentration is analyzed, and the explosion-proof gas is linked with a fan nearby to exhaust. And marking the position where the concentration of the explosion-proof gas exceeds the standard on a GIS map in the security system and reminding related operation and maintenance personnel through short messages.
As shown in fig. 2, the cable tunnel video visualization monitoring system further includes: the system comprises an induction electricity taking device and a sound acquisition module; the induction electricity taking device is connected with the power supply module, and the power supply module and the sound acquisition module are respectively connected with the microcontroller; the output end of the power supply module is respectively connected with a plurality of functional modules of the monitoring device;
the microcontroller is configured to: controlling the power supply module to select different power supply strategies according to the current electric quantity of the power supply module and the importance and required energy consumption of the plurality of functional modules; and controlling the monitoring direction and the monitoring starting time of the monitoring device according to the sound signal.
Specifically, the sound acquisition module is used for acquiring sound signals on the cable tunnel and transmitting the sound signals to the microprocessor;
in specific implementation, at least two sound acquisition modules are arranged and are respectively used for acquiring sound information on cable tunnels in front of and behind the monitoring device;
the microprocessor is used for judging the sound direction according to the sound, and further controlling the monitoring device to be started for monitoring, so that the monitoring efficiency is improved.
The power supply module includes: the standby power supply gating circuit is used for controlling whether the super capacitor or the battery is adopted for supplying power. Wherein, two charging circuit are connected to the output of power: the output ends of the charging circuit 1 and the charging circuit 2 are respectively connected with the super capacitor and the battery; the output ends of the super capacitor and the battery are connected to the standby power supply gating circuit. The output end of the standby power supply gating circuit is respectively connected with the plurality of functional modules of the monitoring device through the DC/DC converter.
The power supply module also comprises a charging management unit, wherein the charging management unit is used for acquiring the output voltage of the induction power taking device and the current battery capacity, and if the voltage reaches a first preset voltage, the charging management unit controls the charging circuit 1 to work, so that the super capacitor is charged and the rear-stage circuit is powered; and if the current battery capacity is not full, controlling the charging circuit 2 to work simultaneously to charge the battery.
The power supply module further comprises a first voltage monitoring module, a second voltage monitoring module and a third voltage monitoring module, one end of the first voltage monitoring module, one end of the second voltage monitoring module and one end of the third voltage monitoring module are respectively connected with the induction power taking device, the super capacitor and the battery and are used for monitoring the current voltage of the induction power taking device, the super capacitor and the battery, and the other end of the first voltage monitoring module, the second voltage monitoring module and the third voltage monitoring module are connected to the microprocessor.
The microprocessor is arranged in the visual monitoring device, the voltage of an input power supply and the battery capacity are obtained based on the monitored voltage, and if the voltage reaches a first preset voltage, the microprocessor controls the first charging circuit to work, so that the super capacitor is charged and the power is supplied to a post-stage circuit; and if the current battery capacity is not full, controlling the second charging circuit to work simultaneously to charge the battery. As an example, when the solar cell is used as the input power source, the induction power taking device has a maximum power voltage value due to a voltage-current characteristic thereof, the first preset voltage is set as the maximum power voltage of the induction power taking device, and the charging circuit operates when the input voltage of the power source reaches the first preset voltage.
In specific implementation, two charging management chips connected in parallel are arranged between the induction electricity taking device and the super capacitor, the charging management chips are connected with the microprocessor, and the microprocessor is used for controlling the starting and stopping of the charging management chips according to the current temperature of the charging management chips so as to realize time-sharing heat dissipation of the charging management chips.
At least two charging management chips connected in parallel are arranged between the induction electricity taking device and the battery, and the charging management chips are connected to the microprocessor; the microprocessor is used for controlling the communication quantity of the charging management chips connected with the battery according to the input power supply voltage of the induction electricity taking device and the capacity of the battery; and controlling the start and stop of the charging management chip according to the current temperature of the charging management chip, so as to realize the time-sharing heat dissipation of the charging management chip.
Further, the number of the charge management chips can be increased based on the capacity setting of the super capacitor or the battery, and the charge management chips can be enabled when the management chips are abnormal as a candidate.
Specifically, a circuit formed by connecting the induction power taking device and the super capacitor in series serves as a first charging circuit;
a circuit formed by connecting the induction power taking device and the battery in series is used as a second charging circuit;
the initial number m =2 of the charging management chips on the first charging circuit;
the initial number n of charge management chips on the second charging circuit is set according to the capacity of the battery,
wherein the content of the first and second substances,
indicating rounding up and 1 indicating an added late complement power management chip. For example, if the power rating of the induction power device is P and the voltage rating of the battery is 6.4V, the setting can be made
And 1 of the charging management chips is used as a candidate and is started when the management chip is abnormal.
The microprocessor monitors the voltage of the super capacitor in real time through the second voltage detection circuit, monitors the voltage of the super capacitor in real time through the third voltage detection circuit, and controls the starting number of the charging management chips on the first charging circuit based on the voltage of the super capacitor; the number of activations of the charge management chip on the second charging circuit is controlled based on the voltage of the battery.
The first voltage detection circuit, the second voltage detection circuit and the third voltage detection circuit can be realized by adopting ADC chips or divider resistors, and can also be realized by adopting a voltage transformer.
As an implementation manner, the charging management chip is further connected with a temperature sensor, and the temperature sensor is used for acquiring the working temperature of the charging management chip in real time and transmitting the working temperature to the control board. When high-power charging, prevent that the local high temperature of circuit board from crossing, this embodiment utilizes temperature sensor to be used for the operating temperature of real-time collection charging management chip and conveys the control panel, and the start-stop of charging management chip is controlled again by the control panel, has ensured the stable operation of the visual prison shooting device's based on solar energy power supply electrical power generating system.
The switching of the power supply mode is based on the corresponding relation between the capacitor voltage and two preset voltage points and the variation trend of the capacitor voltage. The standby power supply gating circuit preferentially uses the super capacitor to supply power when the voltage of the super capacitor is higher than a second preset voltage (can be lower than the voltage of the storage battery); when the voltage of the super capacitor is lower than a third preset voltage, the super capacitor is switched to supply power to the storage battery; the circuit boosts the voltage of the super capacitor and the voltage of the storage battery to set values, and provides stable input voltage for the later-stage DC/DC. In particular, the amount of the solvent to be used,
if the super capacitor is currently powered, and if the battery is currently powered for the load, the voltage of the super capacitor is gradually increased, and when the voltage of the super capacitor is higher than 7V, the super capacitor is switched to supply power for the load.
When the voltage of the super capacitor is higher than a second preset voltage, the super capacitor is adopted for supplying power, if the voltage of the super capacitor is in a descending trend (namely the charging circuit 1 is in a non-working state), when the voltage of the super capacitor is reduced to be lower than a third preset voltage, the super capacitor is switched to a battery for supplying power to a load; if the voltage of the super capacitor is reduced to be less than the second preset voltage and higher than the third preset voltage, the voltage starts to rise (namely, the charging circuit 1 starts to work), and the power supply mode is not switched;
when the voltage of the super capacitor is lower than a third preset voltage, the super capacitor is powered by a battery, and if the voltage of the super capacitor is in a rising trend (namely the charging circuit 1 is in a working state), when the voltage of the super capacitor rises to be higher than the second preset voltage, the super capacitor is switched to the battery to supply power to the load; if the voltage of the super capacitor rises to be less than the second preset voltage and higher than the third preset voltage, the voltage does not rise any more (namely, the charging circuit 1 does not work), and the power supply mode is not switched.
In the present embodiment, the second and third preset voltages are set to 7V and 2V, respectively.
The standby power gating circuit, as shown in fig. 3, includes:
the output end of the super capacitor is divided into two paths, one path is connected with the positive input end of the hysteresis comparator, and the other path is connected with the drain electrode (D pole) of the P-channel MOS tube D1; the source electrode (S pole) of the D1 is divided into three paths, one path is connected with the resistor R1, the other path is connected with the capacitor C1, and the other path is connected with the source electrode (S pole) of the P-channel MOS tube D2; the gate pole (G pole) of the D1 is divided into three paths, one path is connected with the resistor R1, the other path is connected with the capacitor C1, and the other path is connected with the gate pole (G pole) of the D2; one path of the output end of the hysteresis comparator is connected with a gate electrode (G pole) of an N-channel MOS tube D3, and the other path of the output end of the hysteresis comparator is connected with a gate electrode of an N-channel MOS tube D6; the drain electrode (D electrode) of the N-channel MOS tube D3 is connected to a communication line of the gate electrodes of the D1 and the D2 through a resistor R2; one path of the drain electrode (D pole) of the N-channel MOS tube D6 is connected to the drain electrode of the P-channel MOS tube D4 through a resistor R5, and the other path of the drain electrode is connected to the gate electrode (G pole) of the N-channel MOS tube D7; the output end of the lithium battery is connected to the drain electrode (D pole) of the P-channel MOS tube D4; the source electrode (S pole) of the P-channel MOS tube D4 is divided into three paths, one path is connected with the resistor R3, the other path is connected with the capacitor C2, and the other path is connected with the source electrode (S pole) of the P-channel MOS tube D5; the gate pole (G pole) of the D4 is divided into three paths, one path is connected with the resistor R3, the other path is connected with the capacitor C2, and the other path is connected with the gate pole (G pole) of the D5; the drain electrode (D pole) of the N-channel MOS tube D7 is connected to a communication line of the gate poles of the D4 and the D5 through a resistor R4; the drains (D poles) of the P-channel MOS transistors D2 and D5 are connected to the DC/DC converter.
The working principle is as follows: the comparator UB and the resistors R6 and R7 form a hysteresis comparator, the reference voltage is 4.5V, and the resistance values of the R6 and the R7 are configured to enable the hysteresis threshold to be +/-2.5V, namely the voltage-boosting threshold is 7V and the voltage-reducing threshold is 2V. The positive input of the hysteresis comparator is connected with the super capacitor power supply path, when the super capacitor voltage is increased from low to 7V, the output of the comparator UB is at high level, so that the N-channel MOS transistors D3 and D6 are conducted, and for the super capacitor power supply path, the gate poles of the P-channel MOS transistors D1 and D2 are pulled down due to the conduction of D3, so that D1 and D2 are conducted; for the power supply path of the lithium battery, the conduction of the D6 causes the gate electrode of the N-channel MOS transistor D7 to be pulled to a low level, the D7 is not conducted, the body diode of the P-channel MOS transistor D4 and the resistor R3 cause the gate electrode of the P-channel MOS transistor D5 to be pulled to a high level, and the D5 is not conducted, so that the super capacitor only supplies power for the post-stage DC/DC; when the voltage of the super capacitor reaches 2V from high to low, the output of the comparator UB is low level D3 and D6 are not conducted, for the super capacitor power supply channel, the gate pole of the P channel MOS tube D2 is pulled to high level due to the body diode of the P channel MOS tube D1 and the resistor R1, D2 is not conducted, for the lithium battery power supply channel, D6 is not conducted, the gate pole of D7 is pulled to high level and conducted, and thus D4 and D5 are conducted, and therefore, only the lithium battery supplies power for the rear-stage DC/DC. Therefore, the super capacitor can be fully discharged to 2V and then switched to the lithium battery to supply power to the load, and when the super capacitor is charged and the voltage is high enough, the super capacitor can be switched back to supply power to the rear-stage load.
The DC/DC converts the stable voltage of the front stage into an operating voltage required by the load of the rear stage or each functional module.
The visual monitoring system is divided into a plurality of functional modules according to the realized functions, and the functional modules comprise an image acquisition and processing module, a background 4G communication module, an audible and visual alarm module, a sensor wireless communication module and the like.
The microcontroller performs hierarchical management on the power supply of each functional module, and grades the electric quantity and the functional modules respectively.
The functional module grades are divided according to the importance and the power consumption of the functional module, wherein the important low-power-consumption functional module grade is the highest, and the non-important high-power-consumption functional module grade is the lowest. In this embodiment, the functional modules are divided into 4 levels, and the priority order is 4 levels (important low power consumption modules, such as a background 4G communication module, etc.) >3 levels (important high power consumption modules, such as an image acquisition processing module) >2 levels (non-important low power consumption modules, such as a sensor wireless communication module) >1 level (non-important high power consumption modules, such as an audible and visual alarm module); those skilled in the art will appreciate that the division of the functional modules is not limited to 4 levels, and may be adjusted according to the number of functional modules and other factors.
And grading the electric quantity according to the high and low residual electric quantity. In this embodiment, the division is 4 levels: high power (e.g., > 75%), next high power (e.g., 50% -75%), next low power (e.g., 25% -50%), and low power (e.g., < 25%); those skilled in the art can understand that the division of the power level is not limited to 4 levels, and can be increased or decreased reasonably according to the number of the functional modules and other factors.
And the microcontroller controls the power supply module to select different power supply strategies according to the current electric quantity of the power supply module and the importance and the required energy consumption of the plurality of functional modules.
The power supply strategies stored in the microcontroller include:
performance model strategy: the collected data is taken as the main, and the working state of each functional module is adjusted according to the grade of the functional module and the grade of the electric quantity, for example: the time interval of photographing is reduced to obtain more monitoring information, photographed photos and recorded sounds are stored and immediately transmitted to a background, a local image recognition algorithm is started, and an audible and visual alarm device and the like are started.
Time model strategy: mainly prolonging the working time of the monitoring system, and adjusting the working state of each functional module according to the grade of the functional module and the grade of the electric quantity, for example: the service time is prolonged by reducing the work of the device or the module, the local image recognition algorithm is closed, the time interval of photographing is increased, the photos taken at different times are uploaded once, and the like.
General model strategy: the method is a performance time balancing scheme, and when the electric quantity of a power supply module is higher than a set threshold value, a performance model strategy is selected; and when the electric quantity of the power supply module is lower than a set threshold value, the time model strategy is automatically switched to.
The strategy of the energy storage model is as follows: starting from prolonging the service life of the energy storage device, aiming at the characteristics (mainly temperature) of the energy storage device, when the temperature is too low, the heating module is started, and the temperature of the energy storage device is improved to protect the performance and the service life of the energy storage device; when the temperature is too high, the charging current is reduced; and when the temperature is too high or too low and cannot be effectively regulated, the charging and discharging of the energy storage device are closed.
In this embodiment, the corresponding relationship between the current electric quantity level of the power supply module and the level of the function module is shown in table 1.
TABLE 1 correspondence between current power level and function module level
| Current level of electric quantity | Functional module level |
| High electricity quantity | 1-4 stages |
| Second highest electricity quantity | 2-4 stage |
| Second lowest electricity quantity | Grade 3-4 |
| Low battery | 4 stage |
And combining the table 1, after the microcontroller acquires the current electric quantity, judging the electric quantity grade to which the current electric quantity belongs, acquiring the grade of the functional module to be powered according to the electric quantity grade, and powering the functional module of the corresponding grade. Namely, when the electric quantity is high (such as more than or equal to 75 percent), the power is supplied to the 1-4 level functional module; when the secondary high electric quantity (such as 50% -75%), the power is supplied to the 2-4 level functional module; when the power is low (such as 25% -50%), the power is supplied to the 3-4 level functional module; at low battery (e.g. < 25%), then only the level 4 functional module is powered.
In the embodiment, whether the power supply strategy selects the energy storage model strategy is determined according to the temperature of the power supply module; the selection of the energy storage model strategy is related to the temperature, for example, the energy storage model can be adopted when the temperature is lower than 0 ℃ or higher than 45 ℃.
In this embodiment, it is determined whether the power supply policy selects a performance model policy, a time model policy, or a general model policy according to the power amount of the power supply module.
In this embodiment, microcontroller is the low-power consumption type, through BMS monitoring battery power, detects its electric quantity through super capacitor voltage.
The microcontroller can establish a connection with a client (personal PC, smartphone, etc.), modify the power supply strategy and the grading strategy of the power and functional modules through the client.
The embodiment classifies the internal function module of the visual monitoring system according to importance and energy consumption, and performs charging strategy management according to the residual electric quantity, thereby effectively ensuring the working time of the core function of the monitoring system, controlling the monitoring position and the starting time of monitoring of the monitoring device according to the sound signal, performing time-sharing heat dissipation on the charging management chip, and effectively ensuring the monitoring efficiency of the monitoring system.
The heterogeneous energy storage system degree of depth of multisource switching technique that discharges has been designed to this embodiment, according to the electric capacity voltage with the corresponding relation of two default voltage points and electric capacity voltage's trend of change, realizes that super capacitor and battery switch the power supply, has solved the low and visual prison of super capacitor capacity utilization ratio and has clapped the unstable problem of device operation, has improved visual prison and has clapped device electrical power generating system steady operation.
The embodiment designs a current self-adaptive charge equalization technology, a preset number of charge management chips connected in parallel are connected in series on each charging circuit, the starting number of the charge management chips is controlled according to the capacity of a corresponding energy storage element in a power supply module, a wind generating set is respectively connected with the input ends of a super capacitor and a battery through two charging circuits, the output ends of the super capacitor and the battery are both connected to a standby power supply gating circuit, the problems that a storage battery and the super capacitor are connected in parallel through a diode for use, the energy is not output when the voltage of the super capacitor is lower than the voltage of the storage battery, the capacity utilization rate of the super capacitor is low are solved, the power supply capacity of the super capacitor and the working and using duration of a monitoring system are improved, and the balance control of energy and visual monitoring data conversion is realized.
Example two
In one or more embodiments, a working method of a cable tunnel video visual monitoring system is disclosed, which comprises the following steps:
acquiring video information of a cable tunnel, and identifying persons entering the tunnel based on a human face picture entering the tunnel in the video information; judging the damage condition of the cable sheath and the surface water accumulation condition based on the visible light picture in the tunnel in the video information, issuing a cable sheath damage notification and marking the water accumulation position and water accumulation information on a GIS map;
the starting number of the charging management chips is controlled according to the capacity of the corresponding energy storage element in the power supply module, and the starting and stopping of the corresponding charging management chips are controlled according to the current temperature of the charging management chips, so that the time-sharing heat dissipation of the charging management chips is realized.
Although the embodiments of the present invention have been described with reference to the accompanying drawings, it is not intended to limit the scope of the present invention, and it should be understood by those skilled in the art that various modifications and variations can be made without inventive efforts by those skilled in the art based on the technical solution of the present invention.
Claims (14)
1. A cable tunnel video visual monitoring system is characterized by comprising:
the monitoring device is used for acquiring video information of the cable tunnel and identifying persons entering the tunnel based on the face pictures of the persons entering the tunnel in the video information; judging the damage condition of the cable sheath and the surface water accumulation condition based on the visible light picture in the tunnel in the video information, issuing a cable sheath damage notification and marking the water accumulation position and water accumulation information on a GIS map; detecting the cable skin breaking and the surface water accumulation at the same time; the monitoring device regularly captures visible light pictures and intelligently analyzes the damage of the cable sheath and the surface water through a machine deep learning algorithm;
the power supply module is connected with the monitoring device; the power supply module comprises at least one charging circuit, a preset number of charging management chips connected in parallel are connected in series on each charging circuit, and the charging management chips are connected with the microcontroller; the microcontroller is used for controlling the starting number of the charging management chips according to the capacity of the corresponding energy storage element in the power supply module and controlling the starting and stopping of the corresponding charging management chips according to the current temperature of the charging management chips so as to realize time-sharing heat dissipation of the charging management chips;
different power supply strategies are prestored in the microcontroller, and the method specifically comprises the following steps:
performance model strategy: the microcontroller supplies power to the functional modules of corresponding grades according to the electric quantity grade of the current electric quantity of the power supply module and the grade of the functional module to be supplied with power by mainly collecting data;
time model strategy: mainly prolonging the working time of the monitoring system, and supplying power to the functional modules of corresponding grades by the microcontroller according to the electric quantity grade of the current electric quantity of the power supply module and the grade of the functional module to be powered;
general model strategy: when the electric quantity of the power supply module is higher than a set threshold value, selecting a performance model strategy; when the electric quantity of the power supply module is lower than a set threshold value, automatically switching to a time model strategy;
energy storage model strategy: when the temperature of the power supply module is lower than a set threshold value, starting a heating device to increase the temperature of the power supply module; and when the temperature of the power supply module is higher than the set threshold value, reducing the charging current of the power supply module.
2. The cable tunnel video visual monitoring system of claim 1, wherein the power supply module is further connected to an induction power-taking device, and the power supply module comprises: the induction electricity taking device is respectively connected with the input ends of the super capacitor and the battery through two charging circuits, and the output ends of the super capacitor and the battery are connected to the standby power supply gating circuit; the standby power supply gating circuit is used for controlling whether a super capacitor or a battery is adopted to supply power for the post-stage circuit.
3. The cable tunnel video visual monitoring system according to claim 2, wherein the number of parallel charging management chips connected in series between the induction electricity-taking device and the super capacitor is determined by the capacity of the super capacitor; the number of the parallel charging management chips connected in series between the induction electricity taking device and the battery is determined by the capacity of the battery.
4. The cable tunnel video visual monitoring system according to claim 2, wherein the power supply module further comprises a charging management unit, which is configured to obtain an output voltage of the induction power-taking device and an electric quantity of the battery, charge the super capacitor if the output voltage of the induction power-taking device reaches a first preset voltage, and charge the battery simultaneously if the electric quantity of the current battery is not full.
5. The cable tunnel video visual monitoring system according to claim 2, wherein the backup power gating circuit uses the super capacitor to supply power when the super capacitor voltage is higher than a second preset voltage; and when the voltage of the super capacitor is lower than a third preset voltage, the super capacitor is switched to supply power to the battery.
6. The cable tunnel video visual surveillance system of claim 5, wherein the backup power gating circuit comprises: the output end of the super capacitor is divided into two paths, one path is connected with the positive input end of the hysteresis comparator, and the other path is connected with the drain electrode of the P-channel MOS tube D1; the source electrode of the D1 is connected with the source electrode of the D2; one path of the output end of the hysteresis comparator is connected with a gate electrode of an N-channel MOS transistor D3, and the other path of the output end of the hysteresis comparator is connected with a gate electrode of an N-channel MOS transistor D6; the drain electrode of the D3 is connected to a connecting line of the gate electrodes of the D1 and the D2 through a resistor R2;
the output end of the battery is connected to the drain electrode of the P-channel MOS tube D4; the source electrode of the D4 is connected with the source electrode of the D5; one path of the drain electrode of the N-channel MOS tube D6 is connected to the drain electrode of the P-channel MOS tube D4 through a resistor R5, and the other path of the drain electrode of the N-channel MOS tube D7 is connected to the gate electrode of the N-channel MOS tube D7; the drain electrode of the D7 is connected to a communication line of the gate electrodes of the D4 and the D5 through a resistor R4;
the drains of the P-channel MOS tube D2 and the P-channel MOS tube D5 are both connected to the DC/DC converter.
7. The cable tunnel video visual monitoring system according to claim 6, wherein the source of D1 is divided into three paths, one path is connected with a resistor R1, the other path is connected with a capacitor C1, and the other path is connected with the source of a P-channel MOS tube D2; the gate pole of the D1 is divided into three paths, one path is connected with the resistor R1, the other path is connected with the capacitor C1, and the other path is connected with the gate pole of the D2; the source electrode of the P-channel MOS tube D4 is divided into three paths, one path is connected with the resistor R3, the other path is connected with the capacitor C2, and the other path is connected with the source electrode of the P-channel MOS tube D5; the gate pole of D4 is divided into three paths, one path is connected with the resistor R3, the other path is connected with the capacitor C2, and the other path is connected with the gate pole of D5.
8. The cable tunnel video visual monitoring system as claimed in claim 1, wherein the microcontroller is further configured to monitor a working status of the charging management chip, and automatically turn off the charging management chip if there is an abnormal working status of the charging management chip.
9. The cable tunnel video visualization monitoring system according to claim 1, wherein the power supply module is further connected to a sound collection module, and an output end of the power supply module is connected to each of the plurality of functional modules of the monitoring device;
the microcontroller is configured to: controlling the power supply module to select different power supply strategies according to the current electric quantity of the power supply module and the importance and the required energy consumption of the plurality of functional modules; and controlling the monitoring direction and the monitoring starting time of the monitoring device according to the sound signal.
10. The cable tunnel video visualization monitoring system of claim 1, wherein determining whether the power supply strategy selects the energy storage model strategy is based on the temperature of the power supply module;
and determining whether the power supply strategy selects a performance model strategy, a time model strategy or a general model strategy according to the electric quantity of the power supply module.
11. The cable tunnel video visualization monitoring system as claimed in claim 9, wherein the functional modules are classified according to their importance and power consumption, with the most important functional modules with low power consumption having the highest grade and the least unimportant functional modules with high power consumption having the lowest grade.
12. The cable tunnel video visual monitoring system of claim 9, wherein the microcontroller establishes a communication connection with a client based on the client's grading information for power and function modules and power policy modifications.
13. The cable tunnel video visual surveillance system of claim 1, further comprising:
and the gas concentration monitoring device is used for acquiring the concentration of flammable and explosive gases in the tunnel in real time, judging the danger degree of the explosion-proof gas under the concentration, linking the corresponding fan to exhaust air and marking the position where the concentration of the explosion-proof gas exceeds the standard on a GIS map.
14. A working method based on the cable tunnel video visual monitoring system according to any one of claims 1 to 13, comprising:
acquiring video information of a cable tunnel, and identifying persons entering the tunnel based on a human face picture entering the tunnel in the video information; judging the damage condition of the cable sheath and the surface water accumulation condition based on the visible light picture in the tunnel in the video information, issuing a cable sheath damage notification and marking the water accumulation position and water accumulation information on a GIS map;
the starting number of the charging management chips is controlled according to the capacity of the corresponding energy storage element in the power supply module, and the starting and stopping of the corresponding charging management chips are controlled according to the current temperature of the charging management chips, so that the time-sharing heat dissipation of the charging management chips is realized.
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