CN215267789U - Distribution cable channel state on-line monitoring and early warning system - Google Patents
Distribution cable channel state on-line monitoring and early warning system Download PDFInfo
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- CN215267789U CN215267789U CN202121612845.8U CN202121612845U CN215267789U CN 215267789 U CN215267789 U CN 215267789U CN 202121612845 U CN202121612845 U CN 202121612845U CN 215267789 U CN215267789 U CN 215267789U
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- 238000012545 processing Methods 0.000 claims description 25
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- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 16
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02B90/20—Smart grids as enabling technology in buildings sector
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/12—Energy storage units, uninterruptible power supply [UPS] systems or standby or emergency generators, e.g. in the last power distribution stages
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
- Y04S20/248—UPS systems or standby or emergency generators
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Abstract
The utility model provides an online monitoring and early warning system for the channel state of a distribution cable, which comprises a monitoring unit, a control transmission unit and a power supply unit; the monitoring unit comprises a water level sensor, an intrusion monitoring module, a temperature sensor and a smoke sensor; the output ends of the water level sensor, the intrusion monitoring module, the temperature sensor and the smoke sensor are connected with the control transmission unit; the power supply unit comprises an online power taking module, a voltage stabilizing module, a storage battery module and a power supply switching module; the control transmission unit is in communication connection with a remote center; can monitor and real-time transmission to distribution monitoring center to distribution cable channel's real-time status, can in time discover cable channel state unusual and in time make fortune dimension and handle to ensure the security and the stability of power transmission and distribution, and, entire system simple structure, and operating stability is high, need not the manual work and frequently carries out fortune dimension operation, reduction use cost.
Description
Technical Field
The utility model relates to an electric power early warning system especially relates to a distribution cable passageway state on-line monitoring early warning system.
Background
With the increasing speed of urbanization, cable lines in urban areas (distribution cables laid through underground cable channels) have gradually replaced overhead lines in urban areas.
Although the ground cable channel has the advantages of high power supply reliability and no occupation of space corridor, the ground cable channel has serious potential safety hazard, various cables such as high-voltage cables, low-voltage cables, communication cables and the like are laid in the cable channel, the cables are easy to cause fire disasters due to aging, high temperature and the like in the operation process, and the underground cable channel is easy to have water accumulation, invasion, theft and the like, so the ground cable channel is an extremely important subject for monitoring the state of the distribution cable channel.
In the prior art, a traditional manual operation and maintenance mode is adopted for monitoring and operation of cable channels, the number of cable channels in the area under jurisdiction is large, the daily inspection cycle is long, operation state sensing and real-time monitoring cannot be effectively and timely carried out on distribution cables and channels, once fire, accumulated water, invasion and the like occur, untimely monitoring is often found, the distribution cables and the channels can only be in a passive emergency repair state, the optimal accident handling time is missed, and the accident range is easily expanded; although some online monitoring technologies exist in the prior art, the existing detection technology has high cost and poor stability.
Therefore, in order to solve the above technical problems, it is necessary to provide a new technical means.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model aims at providing a distribution cable channel state on-line monitoring early warning system can monitor and real-time transmission to distribution monitoring center the real-time status of distribution cable channel, can in time discover cable channel state unusual and in time make fortune dimension and handle to ensure the security and the stability of power transmission and distribution, and, entire system simple structure, and operating stability is high, need not the manual work and frequently carries out fortune dimension operation, reduces use cost.
The utility model provides an online monitoring and early warning system for the channel state of a distribution cable, which comprises a monitoring unit, a control transmission unit and a power supply unit;
the monitoring unit comprises a water level sensor, an intrusion monitoring module, a temperature sensor and a smoke sensor;
the output ends of the water level sensor, the intrusion monitoring module, the temperature sensor and the smoke sensor are connected with the control transmission unit;
the power supply unit comprises an online power taking module, a voltage stabilizing module, a storage battery module and a power supply switching module;
the online power taking module is used for sensing power from a distribution cable and outputting the power to the voltage stabilizing module, the voltage stabilizing module supplies power to the control transmission unit and the monitoring unit, the output end of the storage battery module is connected with the input end of the power supply switching module, the detection output end of the power supply switching module outputs power supply switching information to the control transmission unit, the input end of the storage battery module is connected to the output end of the online power taking module, and the power supply unit supplies electric energy of the storage battery module to the monitoring unit and the control transmission unit when the online power taking module does not output power;
the control transmission unit is in communication connection with a remote center.
Further, the control transmission unit comprises a processing circuit, a wireless communication module and a memory;
the signal input end of the processing circuit is connected with the output end of the monitoring unit, the input end of the processing circuit is further connected with the detection output end of the power supply switching module, the processing circuit is in communication connection with the storage, and the processing circuit is in communication connection with the remote center through the wireless communication module.
Further, the online power taking module comprises a current transformer, a rectifying circuit, a filtering circuit and a power supply control circuit;
the current transformer is arranged on a distribution cable to take electricity on line, the output end of the current transformer is connected with the input end of the rectifying circuit, the output end of the rectifying circuit is connected with the input end of the filter circuit, the output end of the filter circuit is connected with the input end of the power supply control circuit, and the output end of the power supply control circuit is connected with the input end of the voltage stabilizing module and the detection control end of the power supply switching module as the output end of the on-line electricity taking module.
Further, the power supply control circuit comprises a voltage dependent resistor VAR1, a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a resistor R6, a capacitor C1, a capacitor C2, a capacitor C3, a PMOS tube Q2, an NMOS tube Q3, a triode Q1, a voltage regulator tube ZD1 and a voltage regulator tube ZD 2;
the source electrode of the PMOS tube Q2 is used as the input end of the power supply control circuit and is connected with the output end of the filter circuit, the drain electrode of the PMOS tube Q2 is grounded through a capacitor C3, and the drain electrode of the PMOS tube Q2 is used as the output end of the power supply control circuit;
one end of a voltage dependent resistor VAR1 is connected to the source of a PMOS tube Q2, the other end of the voltage dependent resistor VAR1 is grounded through a resistor R1, a common connection point between the voltage dependent resistor VAR1 and the resistor R1 is connected to the base of a transistor Q1 through the resistor R1, the base of the transistor Q1 is connected to the negative electrode of the voltage dependent transistor ZD1, the positive electrode of the voltage dependent transistor ZD1 is grounded, the emitter of the transistor Q1 is grounded, the collector of the transistor Q1 is connected to the source of the PMOS tube Q1 through the capacitor C1, the collector of the transistor Q1 is connected to the gate of the NMOS tube Q1, the gate of the NMOS tube Q1 is connected to the negative electrode of the PMOS tube ZD1 through the resistor R1, the gate of the NMOS tube Q1 is grounded through the resistor R1, the gate of the NMOS tube Q1 is connected to the drain of the PMOS tube ZD1, and the drain of the PMOS tube Q1 is connected to the drain of the PMOS tube ZD 1. The source of the NMOS transistor Q3 is connected to ground through a resistor R6.
Further, the power supply switching module comprises a resistor R7, a resistor R8, a resistor R9, a resistor R10, a resistor R11, a resistor R12, a resistor R13, a transistor Q6, a transistor Q4, and an NMOS transistor Q5;
the drain of the NMOS transistor Q5 is connected to the output end of the battery module, the source of the NMOS transistor Q5 is used as the output end of the power supply switching module, the drain of the NMOS transistor Q5 is connected to the emitter of the triode Q4 through a resistor R10, the collector of the triode Q4 is connected to the gate of the NMOS transistor Q5 through a resistor R11, and the gate of the NMOS transistor Q5 is grounded through a resistor R12;
one end of a resistor R7 is used as a detection control end of the power supply switching module and connected to the output end of the power supply control circuit, the other end of a resistor R7 is grounded through a resistor R8, a common connection point of the resistor R7 and the resistor R8 is connected to the base of a triode Q4 through a resistor R9, a common connection point of the resistor R7 and the resistor R8 is connected to the base of the triode Q6 through a resistor R13, the emitter of the triode Q6 is grounded, and the collector of the triode Q6 is used as a detection output end of the power supply switching module and connected to the input end of the processing circuit;
the transistor Q4 is a P-type transistor.
Further, the remote center comprises a remote monitoring host, a touch display, an audible and visual alarm and a storage server;
the remote monitoring host is in communication connection with the control transmission unit, the remote monitoring host is in communication connection with the touch display and the storage server, and the control output end of the remote monitoring host is connected with the control input end of the audible and visual alarm.
Further, the battery module includes charge and discharge management circuit and lithium cell, charge and discharge management circuit's input is connected with power supply control circuit's output, and charge and discharge management circuit's the output that charges is connected with the lithium cell, and the output of lithium cell is connected with the input that the module was switched in the power supply.
The utility model has the advantages that: through the utility model discloses, can monitor and real-time transmission to distribution monitoring center to distribution cable channel's real-time status, can in time discover cable channel state unusual and in time make fortune dimension and handle to ensure the security and the stability of power transmission and distribution, and, entire system simple structure, and operating stability is high, need not the artifical operation of frequently carrying out fortune dimension, reduction use cost.
Drawings
The invention will be further described with reference to the following figures and examples:
fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic diagram of the power supply control circuit and the power supply switching module circuit of the present invention.
Detailed Description
The invention is described in further detail below with reference to the drawings of the specification:
the utility model provides an online monitoring and early warning system for the channel state of a distribution cable, which comprises a monitoring unit, a control transmission unit and a power supply unit;
the monitoring unit comprises a water level sensor, an intrusion monitoring module, a temperature sensor and a smoke sensor; the intrusion monitoring module is formed by adopting the existing equipment, comprises a photoelectric switch, an infrared detector and the like, is formed by any one or a plurality of combinations and is used for monitoring whether a cable channel illegally intruded by a human body or other animal intrudes into the cable channel to damage the cable channel; the temperature sensor is used for monitoring the temperature of the cable, the joint temperature and the environment temperature (realized by a plurality of temperature sensors), and judging whether a fire disaster occurs according to the environment temperature and the smoke sensor; the water level sensor is used for monitoring whether the cable channel is accumulated with water or not.
The output ends of the water level sensor, the intrusion monitoring module, the temperature sensor and the smoke sensor are connected with the control transmission unit;
the power supply unit comprises an online power taking module, a voltage stabilizing module, a storage battery module and a power supply switching module; the voltage stabilizing module adopts the existing voltage stabilizing circuit and is selected according to actual requirements, for example, rated voltages of electric devices have 12V, 9V and 5V, and the voltage stabilizing module has three voltage stabilizing circuits, such as LM7812, LM7809 and LM 7805;
the online power taking module is used for sensing power from a distribution cable and outputting the power to the voltage stabilizing module, the voltage stabilizing module supplies power to the control transmission unit and the monitoring unit, the output end of the storage battery module is connected with the input end of the power supply switching module, the detection output end of the power supply switching module outputs power supply switching information to the control transmission unit, the input end of the storage battery module is connected to the output end of the online power taking module, and the power supply unit supplies electric energy of the storage battery module to the monitoring unit and the control transmission unit when the online power taking module does not output power;
control transmission unit and remote center communication connection, through above-mentioned structure, can monitor and real-time transmission to distribution monitoring center the real-time status of distribution cable channel, can in time discover cable channel state abnormity and in time make fortune dimension and handle to ensure the security and the stability of power transmission and distribution, and, entire system simple structure, and operating stability is high, need not the artifical fortune dimension operation that frequently carries on, reduction use cost.
In this embodiment, the control transmission unit includes a processing circuit, a wireless communication module, and a memory;
the signal input end of the processing circuit is connected with the output end of the monitoring unit, the input end of the processing circuit is also connected with the detection output end of the power supply switching module, the processing circuit is in communication connection with the memory, and the processing circuit is in communication connection with the remote center through the wireless communication module; in actual use, cable channels are numerous and complicated, more than one monitoring unit and one control transmission unit are often arranged, a group of control transmission units is set at intervals according to an actual environment, one control transmission unit is selected as a main node from the control transmission units, other control transmission units are sub-nodes, each sub-node uploads data to the main node and then uploads the data to a remote center, for the sub-nodes, a UWB module, an NB-IOT module or a Bluetooth module can be adopted as a wireless communication module, and a 4G module, a 5G module or a 2.4G power wireless private network module is adopted as the main node, so that the data are uploaded to the remote center; the processing circuit adopts the existing single chip microcomputer, belongs to the prior art and is not described herein.
In this embodiment, the online power taking module includes a current transformer, a rectifying circuit, a filtering circuit, and a power supply control circuit;
current transformer sets up and gets the electricity on line in distribution cable, current transformer's output is connected with rectifier circuit's input, rectifier circuit's output is connected with filter circuit's input, filter circuit's output is connected with power supply control circuit's input, power supply control circuit's output is connected with voltage stabilizing module's input and power supply switching module's detection control end as getting the output of electric module on line, and among the on-line monitoring, the most important is exactly each sensor, data transmission module's power supply stability, and through above-mentioned structure and battery module and power supply switching module cooperation, can guarantee power supply stability, and ensure the power consumption safety moreover, so, the power consumption safety then realizes through power supply control circuit, wherein:
the power supply control circuit comprises a voltage dependent resistor VAR1, a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a resistor R6, a capacitor C1, a capacitor C2, a capacitor C3, a PMOS tube Q2, an NMOS tube Q3, a triode Q1, a voltage stabilizing tube ZD1 and a voltage stabilizing tube ZD 2;
the source electrode of the PMOS tube Q2 is used as the input end of the power supply control circuit and is connected with the output end of the filter circuit, the drain electrode of the PMOS tube Q2 is grounded through a capacitor C3, and the drain electrode of the PMOS tube Q2 is used as the output end of the power supply control circuit;
one end of a voltage dependent resistor VAR1 is connected to the source of a PMOS tube Q2, the other end of the voltage dependent resistor VAR1 is grounded through a resistor R1, a common connection point between the voltage dependent resistor VAR1 and the resistor R1 is connected to the base of a transistor Q1 through the resistor R1, the base of the transistor Q1 is connected to the negative electrode of the voltage dependent transistor ZD1, the positive electrode of the voltage dependent transistor ZD1 is grounded, the emitter of the transistor Q1 is grounded, the collector of the transistor Q1 is connected to the source of the PMOS tube Q1 through the capacitor C1, the collector of the transistor Q1 is connected to the gate of the NMOS tube Q1, the gate of the NMOS tube Q1 is connected to the negative electrode of the PMOS tube ZD1 through the resistor R1, the gate of the NMOS tube Q1 is grounded through the resistor R1, the gate of the NMOS tube Q1 is connected to the drain of the PMOS tube ZD1, and the drain of the PMOS tube Q1 is connected to the drain of the PMOS tube ZD 1. The source of the NMOS transistor Q3 is grounded through a resistor R6; in the above structure, the power supply control circuit is used for preventing overvoltage to protect subsequent devices, the overvoltage is mainly caused by fluctuation and interference of a cable to be taken, when no overvoltage exists, voltage division processing is performed through the resistor R3 and the resistor R4, a driving voltage is provided for the gate of the NMOS transistor Q3, so that the NMOS transistor Q3 is in saturated conduction, the gate and the source of the PMOS transistor Q2 are reversely biased, the PMOS transistor Q2 is conducted to supply power to the subsequent devices, when overvoltage exists, the voltage dependent resistor VAR1 is conducted, at this time, the triode Q1 is conducted, the gate voltage of the NMOS transistor Q3 is pulled low and cut off, so that no reverse bias exists between the gate and the source of the PMOS transistor Q2, the PMOS transistor Q2 is cut off, so that the subsequent power supply is cut off to form good protection, and when the voltage is too high, protection is realized through the TVS1 (bidirectional transient suppression diode).
Although the power supply control circuit realizes overvoltage protection, the subsequent power utilization device cannot work at the moment, and at the moment, the storage battery module and the power supply switching module enter a working state so as to provide working power for the subsequent device.
Specifically, the method comprises the following steps: the power supply switching module comprises a resistor R7, a resistor R8, a resistor R9, a resistor R10, a resistor R11, a resistor R12, a resistor R13, a triode Q6, a triode Q4 and an NMOS transistor Q5;
the drain of the NMOS transistor Q5 is connected to the output end of the battery module, the source of the NMOS transistor Q5 is used as the output end of the power supply switching module, the drain of the NMOS transistor Q5 is connected to the emitter of the triode Q4 through a resistor R10, the collector of the triode Q4 is connected to the gate of the NMOS transistor Q5 through a resistor R11, and the gate of the NMOS transistor Q5 is grounded through a resistor R12;
one end of a resistor R7 is used as a detection control end of the power supply switching module and connected to the output end of the power supply control circuit, the other end of a resistor R7 is grounded through a resistor R8, a common connection point of the resistor R7 and the resistor R8 is connected to the base of a triode Q4 through a resistor R9, a common connection point of the resistor R7 and the resistor R8 is connected to the base of the triode Q6 through a resistor R13, the emitter of the triode Q6 is grounded, and the collector of the triode Q6 is used as a detection output end of the power supply switching module and connected to the input end of the processing circuit;
wherein, the triode Q4 is a P-type triode; under the structure, when the power supply control circuit supplies power, after voltage division is carried out through the resistor R7 and the resistor R8, a voltage is provided for the base electrode of the triode Q4, the resistance values of the resistor R10 and the resistor R9 are adjusted, when the drain electrode of the PMOS tube Q2 outputs voltage, the triode Q4 is always in a non-reverse bias state and is cut off, the NMOS tube Q5 is cut off, the storage battery does not supply power, and when the PMOS tube Q2 is subjected to overvoltage protection or the PMOS tube Q2 is damaged or the front end element of the power supply control circuit is damaged and does not output, the triode Q4 immediately enters a reverse bias state, the triode Q4 is conducted, the NMOS tube Q5 is conducted, the storage battery provides working power, and therefore the continuity of power supply is ensured; when the power supply control circuit has output, the triode Q6 is conducted, the pin of the processing circuit connected with the collector of the triode Q6 is set to be low level, and when the power supply control circuit has no output, the pin is set to be high level, and the processing circuit identifies the high level and transmits the high level to the monitoring center; the storage battery is a lithium battery in a storage battery module, the storage battery module comprises a charge and discharge management circuit and a lithium battery, the input end of the charge and discharge management circuit is connected with the output end of the power supply control circuit, the charge output end of the charge and discharge management circuit is connected with the lithium battery, and the output end of the lithium battery is connected with the input end of the power supply switching module; for the charge and discharge management circuit, the charge and discharge management circuit is selected according to the rated voltage of the lithium battery, the output voltage of the lithium battery is determined by the highest rated voltage in the electric device, and the charge and discharge management circuit is also in communication connection with the processing circuit and used for uploading the charge state information of the lithium battery in time; generally, the lithium battery can meet the requirements of various electric devices by adopting a 12V lithium battery, the charging and discharging management circuit can be realized by adopting a CN3763 management chip, and when the lithium battery supplies power, the output end of the power supply switching module is generally not directly provided for a load but connected to the input end of the voltage stabilizing module, so that the voltage stabilizing module performs voltage stabilization processing (or performs voltage reduction processing) on the power to the load.
In this embodiment, the remote center includes a remote monitoring host, a touch display, an audible and visual alarm, and a storage server;
the remote monitoring host is in communication connection with the control transmission unit, the remote monitoring host is in communication connection with the touch display and the storage server, and the control output end of the remote monitoring host is connected with the control input end of the audible and visual alarm.
Finally, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the present invention can be modified or replaced by other means without departing from the spirit and scope of the present invention, which should be construed as limited only by the appended claims.
Claims (7)
1. The utility model provides a distribution cable passageway state on-line monitoring early warning system which characterized in that: the device comprises a monitoring unit, a control transmission unit and a power supply unit;
the monitoring unit comprises a water level sensor, an intrusion monitoring module, a temperature sensor and a smoke sensor;
the output ends of the water level sensor, the intrusion monitoring module, the temperature sensor and the smoke sensor are connected with the control transmission unit;
the power supply unit comprises an online power taking module, a voltage stabilizing module, a storage battery module and a power supply switching module;
the online power taking module is used for sensing power from a distribution cable and outputting the power to the voltage stabilizing module, the voltage stabilizing module supplies power to the control transmission unit and the monitoring unit, the output end of the storage battery module is connected with the input end of the power supply switching module, the detection output end of the power supply switching module outputs power supply switching information to the control transmission unit, the input end of the storage battery module is connected to the output end of the online power taking module, and the power supply unit supplies electric energy of the storage battery module to the monitoring unit and the control transmission unit when the online power taking module does not output power;
the control transmission unit is in communication connection with a remote center.
2. The on-line monitoring and early warning system for the state of the power distribution cable channel according to claim 1, characterized in that: the control transmission unit comprises a processing circuit, a wireless communication module and a memory;
the signal input end of the processing circuit is connected with the output end of the monitoring unit, the input end of the processing circuit is further connected with the detection output end of the power supply switching module, the processing circuit is in communication connection with the storage, and the processing circuit is in communication connection with the remote center through the wireless communication module.
3. The on-line monitoring and early warning system for the state of the power distribution cable channel according to claim 2, characterized in that: the online power taking module comprises a current transformer, a rectifying circuit, a filtering circuit and a power supply control circuit;
the current transformer is arranged on a distribution cable to take electricity on line, the output end of the current transformer is connected with the input end of the rectifying circuit, the output end of the rectifying circuit is connected with the input end of the filter circuit, the output end of the filter circuit is connected with the input end of the power supply control circuit, and the output end of the power supply control circuit is connected with the input end of the voltage stabilizing module and the detection control end of the power supply switching module as the output end of the on-line electricity taking module.
4. The on-line monitoring and early warning system for the channel state of the distribution cable as claimed in claim 3, wherein: the power supply control circuit comprises a voltage dependent resistor VAR1, a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a resistor R6, a capacitor C1, a capacitor C2, a capacitor C3, a PMOS tube Q2, an NMOS tube Q3, a triode Q1, a voltage stabilizing tube ZD1 and a voltage stabilizing tube ZD 2;
the source electrode of the PMOS tube Q2 is used as the input end of the power supply control circuit and is connected with the output end of the filter circuit, the drain electrode of the PMOS tube Q2 is grounded through a capacitor C3, and the drain electrode of the PMOS tube Q2 is used as the output end of the power supply control circuit;
one end of a voltage dependent resistor VAR1 is connected to the source of a PMOS tube Q2, the other end of the voltage dependent resistor VAR1 is grounded through a resistor R1, a common connection point between the voltage dependent resistor VAR1 and the resistor R1 is connected to the base of a transistor Q1 through the resistor R1, the base of the transistor Q1 is connected to the negative electrode of the voltage dependent transistor ZD1, the positive electrode of the voltage dependent transistor ZD1 is grounded, the emitter of the transistor Q1 is grounded, the collector of the transistor Q1 is connected to the source of the PMOS tube Q1 through the capacitor C1, the collector of the transistor Q1 is connected to the gate of the NMOS tube Q1, the gate of the NMOS tube Q1 is connected to the negative electrode of the PMOS tube ZD1 through the resistor R1, the gate of the NMOS tube Q1 is grounded through the resistor R1, the gate of the NMOS tube Q1 is connected to the drain of the PMOS tube ZD1, and the drain of the PMOS tube Q1 is connected to the drain of the PMOS tube ZD 1. The source of the NMOS transistor Q3 is connected to ground through a resistor R6.
5. The on-line monitoring and early warning system for the channel state of the distribution cable as claimed in claim 3, wherein: the power supply switching module comprises a resistor R7, a resistor R8, a resistor R9, a resistor R10, a resistor R11, a resistor R12, a resistor R13, a triode Q6, a triode Q4 and an NMOS transistor Q5;
the drain of the NMOS transistor Q5 is connected to the output end of the battery module, the source of the NMOS transistor Q5 is used as the output end of the power supply switching module, the drain of the NMOS transistor Q5 is connected to the emitter of the triode Q4 through a resistor R10, the collector of the triode Q4 is connected to the gate of the NMOS transistor Q5 through a resistor R11, and the gate of the NMOS transistor Q5 is grounded through a resistor R12;
one end of a resistor R7 is used as a detection control end of the power supply switching module and connected to the output end of the power supply control circuit, the other end of a resistor R7 is grounded through a resistor R8, a common connection point of the resistor R7 and the resistor R8 is connected to the base of a triode Q4 through a resistor R9, a common connection point of the resistor R7 and the resistor R8 is connected to the base of the triode Q6 through a resistor R13, the emitter of the triode Q6 is grounded, and the collector of the triode Q6 is used as a detection output end of the power supply switching module and connected to the input end of the processing circuit;
the transistor Q4 is a P-type transistor.
6. The on-line monitoring and early warning system for the state of the power distribution cable channel according to claim 1, characterized in that: the remote center comprises a remote monitoring host, a touch display, an audible and visual alarm and a storage server;
the remote monitoring host is in communication connection with the control transmission unit, the remote monitoring host is in communication connection with the touch display and the storage server, and the control output end of the remote monitoring host is connected with the control input end of the audible and visual alarm.
7. The on-line monitoring and early warning system for the state of the power distribution cable channel according to claim 2, characterized in that: the storage battery module comprises a charge and discharge management circuit and a lithium battery, wherein the input end of the charge and discharge management circuit is connected with the output end of the power supply control circuit, the charge output end of the charge and discharge management circuit is connected with the lithium battery, and the output end of the lithium battery is connected with the input end of the power supply switching module.
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| CN202121612845.8U CN215267789U (en) | 2021-07-15 | 2021-07-15 | Distribution cable channel state on-line monitoring and early warning system |
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| CN202121612845.8U CN215267789U (en) | 2021-07-15 | 2021-07-15 | Distribution cable channel state on-line monitoring and early warning system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115311765A (en) * | 2022-08-05 | 2022-11-08 | 深圳市金安科技有限公司 | Intelligent door sensor control method and system based on NB-IoT |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115311765A (en) * | 2022-08-05 | 2022-11-08 | 深圳市金安科技有限公司 | Intelligent door sensor control method and system based on NB-IoT |
| CN115311765B (en) * | 2022-08-05 | 2023-03-31 | 深圳市金安科技有限公司 | Intelligent door sensor control method and system based on NB-IoT |
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