CN108490818B - Lightning stroke monitoring circuit, system and method - Google Patents
Lightning stroke monitoring circuit, system and method Download PDFInfo
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- CN108490818B CN108490818B CN201810051868.2A CN201810051868A CN108490818B CN 108490818 B CN108490818 B CN 108490818B CN 201810051868 A CN201810051868 A CN 201810051868A CN 108490818 B CN108490818 B CN 108490818B
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
- G05B19/0423—Input/output
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/24—Pc safety
- G05B2219/24215—Scada supervisory control and data acquisition
Abstract
The invention discloses a lightning stroke monitoring circuit, which comprises: the acquisition module is connected with the lightning protection device and used for acquiring working signals of the lightning protection device; the central processing unit is connected with the acquisition module and used for processing the working signals and acquiring the working state information of the lightning protection device; and the transmission module is respectively connected with the central processor and the background server and is used for sending the working state information to the background server for analysis. The invention also discloses a lightning stroke monitoring system and a lightning stroke monitoring method. The invention can monitor the working state of the lightning protection device in real time and has simple structure.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a lightning strike monitoring circuit, system, and method.
Background
Lightning strokes are serious damages to communication signal equipment, and the lightning strokes can interrupt communication signals and seriously damage the communication equipment. It has been counted that the failure of the communication device signal is due in part to a lightning strike. The lightning protection system monitoring circuit in the prior art does not monitor lightning conditions in time, the working state of the lightning protection device cannot be known in real time, and the monitoring circuit is complicated.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a lightning stroke monitoring circuit, a lightning stroke monitoring system and a lightning stroke monitoring method, which can monitor the working state of a lightning protector in real time and have a simple structure.
The technical scheme provided by the invention for the technical problems is as follows:
in one aspect, the invention provides a lightning strike monitoring circuit comprising:
the acquisition module is connected with the lightning protection device and used for acquiring working signals of the lightning protection device;
the central processing unit is connected with the acquisition module and used for processing the working signals and acquiring the working state information of the lightning protection device;
and the transmission module is respectively connected with the central processor and the background server and is used for sending the working state information to the background server for analysis.
Further, the working signals of the lightning protection device comprise remote signal, lightning stroke induction signal and three-phase power;
the acquisition module comprises a first optical coupler, a second optical coupler, a third optical coupler, a fourth optical coupler and an alternating current-direct current converter;
the first optical coupler is respectively connected with a remote communication interface of the lightning protection device and the central processing unit, so that remote communication signals output by the remote communication interface are transmitted to the central processing unit through the first optical coupler;
the AC-DC converter is respectively connected with the lightning stroke sensor of the lightning stroke protector and the first optocoupler, so that lightning stroke induction signals output by the lightning stroke sensor are sequentially transmitted to the central processing unit through the AC-DC converter and the first optocoupler;
the second optocoupler, the third optocoupler and the fourth optocoupler are connected with the three-phase electric interface and the central processor, so that three-phase electricity output by the three-phase electric interface is transmitted to the central processor through the second optocoupler, the third optocoupler and the fourth optocoupler respectively.
Further, the working state information of the lightning protection device comprises running state information, lightning stroke times and lightning stroke current;
the central processing unit is particularly used for processing the remote signal to obtain running state information, carrying out accumulated calculation on the lightning stroke induction signal to obtain the lightning stroke frequency, and processing the three-phase power to obtain the lightning stroke current.
Further, the transmission module includes:
the network converter is connected with the central processing unit and used for converting the working state information of the lightning protection device into network signals;
and the transmission chip is connected with the network converter and used for sending the working state information to the background server in a network signal mode.
Further, the lightning strike monitoring circuit further includes:
and the display module is connected with the central processing unit and used for displaying the working state information of the lightning protection device.
Further, the lightning strike monitoring circuit further includes:
and the key module is connected with the central processing unit and used for adjusting a clock or checking the working state information of the lightning protection device.
Further, the acquisition module further comprises a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor and a sixth resistor;
the negative input end of the first optocoupler is connected with the remote communication interface, the positive input end of the first optocoupler is grounded, the collector electrode of the first optocoupler is connected with a power supply, the emitter electrode of the first optocoupler is respectively connected with one end of the third resistor and one end of the second resistor, and the other end of the third resistor and the other end of the second resistor are respectively connected with the central processing unit;
the input end of the AC-DC converter is connected with the lightning stroke sensor, the positive output end of the AC-DC converter is connected with the negative input end of the first optocoupler through the first resistor, and the negative output end of the AC-DC converter and the positive input end of the first optocoupler U3 are grounded;
the input end of the second optical coupler is connected with the first end of the three-phase electric interface, the collector electrode of the second optical coupler is respectively connected with the central processing unit and one end of the fourth resistor, the other end of the fourth resistor is connected with a power supply, and the emitter electrode of the second optical coupler is grounded; the input end of the third optical coupler is connected with the second end of the three-phase electrical interface, the collector electrode of the third optical coupler is respectively connected with the central processing unit and one end of the fifth resistor, the other end of the fifth resistor is connected with a power supply, and the emitter electrode of the third optical coupler is grounded; the input end of the fourth optical coupler is connected with the third end of the three-phase electric interface, the collector electrode of the fourth optical coupler is respectively connected with the central processing unit and one end of the sixth resistor, the other end of the sixth resistor is connected with a power supply, and the emitter electrode of the fourth optical coupler is grounded.
Further, the key module comprises a first key, a second key, a third key, a fourth key, a first capacitor, a second capacitor, a third capacitor, a fourth capacitor, a seventh resistor, an eighth resistor, a ninth resistor, a tenth resistor and an eleventh resistor;
one end of the first key is connected with a power supply through the seventh resistor, the other end of the first key is respectively connected with the central processing unit, one end of the first capacitor and one end of the eighth resistor, and the other end of the first capacitor and the other end of the eighth resistor are grounded;
one end of the second key is connected with a power supply through the seventh resistor, the other end of the second key is respectively connected with the central processing unit, one end of the second capacitor and one end of the ninth resistor, and the other end of the second capacitor and the other end of the ninth resistor are grounded;
one end of the third key is connected with a power supply through the seventh resistor, the other end of the third key is respectively connected with the central processing unit, one end of the third capacitor and one end of the tenth resistor, and the other end of the third capacitor and the other end of the tenth resistor are grounded;
one end of the fourth key is connected with a power supply through the seventh resistor, the other end of the fourth key is respectively connected with the central processing unit, one end of the fourth capacitor and one end of the eleventh resistor, and the other end of the fourth capacitor and the other end of the eleventh resistor are grounded.
On the other hand, the invention provides a lightning stroke monitoring system, which comprises N lightning stroke monitoring devices, N lightning stroke monitoring circuits and a background server; wherein N is more than or equal to 1;
the N lightning protection devices are connected with the N lightning stroke monitoring circuits in a one-to-one correspondence manner, and the N lightning stroke monitoring circuits are respectively connected with the background server; each lightning stroke monitoring circuit is the lightning stroke monitoring circuit.
On the other hand, the invention also provides a lightning stroke monitoring method which can be applied to the lightning stroke monitoring circuit, and the lightning stroke monitoring method comprises the following steps:
collecting working signals of the lightning protection device;
processing the working signal to acquire the working state information of the lightning protection device;
and sending the working state information to a background server for analysis.
The technical scheme provided by the embodiment of the invention has the beneficial effects that:
the working signal of the lightning protection device is acquired through the acquisition module, the acquired working signal is processed through the central processing unit, the working state information of the lightning protection device is acquired, and then the working state information of the lightning protection device is summarized to the background server through the transmission module for data analysis, so that a user can check the working state of the lightning protection device in real time, the real-time monitoring of lightning stroke is realized, and the circuit structure is simple.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a lightning strike monitoring circuit according to an embodiment of the invention;
FIG. 2 is a schematic diagram of a portion of a lightning strike detection circuit according to an embodiment of the invention;
FIG. 3 is a schematic circuit diagram of another portion of the acquisition module in the lightning strike monitoring circuit according to one embodiment of the invention;
FIG. 4 is a schematic diagram of a portion of a lightning strike monitoring circuit provided in accordance with an embodiment of the invention;
FIG. 5 is a schematic circuit diagram of a transmission module in a lightning strike monitoring circuit according to an embodiment of the invention;
FIG. 6 is a schematic diagram of a lightning strike monitoring system according to a second embodiment of the invention;
FIG. 7 is a flow chart of a lightning strike monitoring method according to a third embodiment of the invention.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, the embodiments of the present invention will be described in further detail with reference to the accompanying drawings.
Example 1
An embodiment of the present invention provides a lightning strike monitoring circuit, see fig. 1, comprising:
the acquisition module 1 is connected with the lightning protection device and is used for acquiring working signals of the lightning protection device;
the central processing unit 2 is connected with the acquisition module 1 and is used for processing the working signals and acquiring the working state information of the lightning protection device;
and the transmission module 3 is respectively connected with the central processing unit 2 and the background server and is used for sending the working state information to the background server for analysis.
It should be noted that, the lightning stroke monitoring circuit provided by the invention is internally provided with an ethernet RJ45 interface, and the ethernet RJ45 (TCP/UDP protocol stack) is connected to a switch, a router or an ethernet-to-optical fiber converter (or a GPRS/GSM DTU is connected to a background server through the internet).
The lightning protection device is provided with a surge protector and a lightning stroke sensor, the acquisition module acquires the state of the surge protector, acquires the state of the lightning stroke sensor, acquires three-phase electricity at the same time, and the central processing unit processes the data acquired by the acquisition module to acquire the working state information of the lightning protection device. The background server receives the data packet from the lightning stroke monitoring circuit, analyzes the data packet and stores the data packet into the database, and the background server can display the working state information of the lightning protection device to a user by inquiring the local database.
Further, the working signals of the lightning protection device comprise remote signal, lightning stroke induction signals and three-phase electricity.
As shown in fig. 2 and 3, the collection module includes a first optical coupler U3, a second optical coupler U4, a third optical coupler U5, a fourth optical coupler U6, and an ac-dc converter D1.
As shown in fig. 2 and 4, the first optical coupler U3 is connected to the remote communication interface of the lightning protection device and the central processing unit U1, respectively, so that a remote communication signal output by the remote communication interface is transmitted to the central processing unit U1 through the first optical coupler U3;
the AC/DC converter D1 is respectively connected with the lightning stroke sensor of the lightning protector and the first optocoupler U3, so that lightning stroke induction signals output by the lightning stroke sensor are sequentially transmitted to the central processing unit U1 through the AC/DC converter D1 and the first optocoupler U3.
As shown in fig. 3 and 4, the second optical coupler U4, the third optical coupler U5 and the fourth optical coupler U6 are all connected with a three-phase electrical interface and the central processing unit U1, so that three-phase electricity output by the three-phase electrical interface is transmitted to the central processing unit U1 through the second optical coupler U4, the third optical coupler U5 and the fourth optical coupler U6 respectively.
It should be noted that, the remote communication interface of the surge protector in the lightning protector is connected to the input end of the first optical coupler, so as to transmit the state of the surge protector to the first optical coupler through the remote communication signal, and then to the central processing unit. Among them, the surge protector outputs various states in the form of switching values (high and low levels) or analog values. The switching value input can be connected with multiple paths of active switching value signals at the same time, and an isolator is arranged in the switching value input to provide product stability; the analog input can be connected with multiple analog voltage or current signals at the same time.
The lightning stroke sensor in the lightning protection device is connected with the input end of the AC-DC converter so as to transmit lightning stroke sensing signals output by the lightning stroke sensor to the central processing unit through the first optocoupler after AC-DC conversion. The three terminals of the three-phase electric interface are connected with the input end of the second optical coupler, the input end of the third optical coupler and the input end of the fourth optical coupler in a one-to-one correspondence manner, and the output end of the second optical coupler, the output end of the third optical coupler and the output end of the fourth optical coupler are respectively connected with the central processing unit so that three-phase electricity is transmitted to the central processing unit through the three optical couplers.
Further, the working state information of the lightning protection device comprises running state information, lightning stroke times and lightning stroke current;
the central processing unit is particularly used for processing the remote signal to obtain running state information, carrying out accumulated calculation on the lightning stroke induction signal to obtain the lightning stroke frequency, and processing the three-phase power to obtain the lightning stroke current.
It should be noted that, once every lightning stroke, the lightning stroke sensor emits a lightning stroke sensing signal, and the central processing unit accumulates the received lightning stroke sensing signal, so as to obtain the number of lightning strokes. In addition, the central processing unit stores the working state information of the lightning protection device when obtaining the working state information of the lightning protection device such as the operating state information, the lightning stroke times, the lightning stroke current and the like.
Further, as shown in fig. 5, the transmission module includes:
the network converter USR-1 is connected with the central processing unit U1 and is used for converting the working state information of the lightning protection device into a network signal;
and the transmission chip RJ45OUT is connected with the network converter USR-1 and is used for sending the working state information to the background server in a network signal mode.
It should be noted that, the transmission chip is connected with the background server through the network cable, and after the central processing unit converts the stored data into the network signal through the network converter, the working state information of the lightning protection device after conversion is sent to the background server through the transmission chip every 10 seconds, so that the background server can check the working state information of all the networking lightning protection devices.
The central processing unit U1 is preferably a processing chip of model MB95F 698K. The 28 th pin UI0 of the central processing unit U1 is connected with the transmitting end TXD of the network converter USR-1, and the 27 th pin UO0 of the central processing unit U1 is connected with the receiving end RXD of the network converter USR-1, so that data interaction between the central processing unit and the network converter is realized. In addition, the network converter USR-1 is provided with a transmission chip RJ45OUT, and the transmission chip RJ45OUT communicates with the background server through the Ethernet so as to transmit the network signals converted by the network converter USR-1 to the background server.
Further, as shown in fig. 1, the lightning strike monitoring circuit further includes:
and the display module 4 is connected with the central processing unit 2 and is used for displaying the working state information of the lightning protection device.
The display module provides a man-machine interaction interface, and working state information such as lightning stroke times, lightning stroke time, lightning stroke current (automatic generation of random numbers), running state, grounding state information of the surge protector and the like is displayed on the man-machine interaction interface. In addition, the user can carry out menu selection and setting of related parameters through the man-machine interaction interface.
Specifically, as shown in fig. 4, the display module includes a display LCD, a capacitor C1, a capacitor C2, a capacitor C3, a capacitor C4, a capacitor C5, a capacitor C6, a capacitor C7, a capacitor C8, a capacitor C9, a capacitor C10, and a resistor R25. The lightning strike monitoring circuit further comprises a chip U2, a capacitor C17, a resistor R23 and a resistor R24.
The display LCD is preferably a display with a model number L28, the central processor U1 is preferably a processing chip with a model number MB95F698K, and the chip U2 is preferably a chip with a model number 24C 64A.
Pins 1, 14, 26 and 27 of the display LCD are grounded, pin 2 of the display LCD is connected with pin 14P 11 of the central processor U1 through a resistor R25, pin 3 of the display LCD is connected with pin 13P 10 of the central processor U1, pins 4, 5, 6, 7, 8, 9, 10, 11 and 28 of the display LCD are connected with pin 8 of the chip U2, pin 12 of the display LCD is connected with pin 10 SCK of the central processor U1, pin 13 of the display LCD is connected with pin 12 SIN of the central processor U1, pin 15 of the display LCD is grounded through a capacitor C1, pin 16 of the display LCD is connected with pin 17 of the display LCD through a capacitor C2, pin 19 of the display LCD is connected with pin 20 of the display LCD through a capacitor C4, pin 21 of the display LCD is grounded through a capacitor C5, pin 22 of the display LCD is grounded through a capacitor C6, pin 23 of the display is grounded through a capacitor C7, pin 27 of the display is grounded through a capacitor C8, and pin 27 of the display LCD is grounded through a capacitor C2.
The 1 st, 2 nd, 3 rd, 4 th and 7 th pins of the chip U2 are grounded, the 4 th pin of the chip U2 is also connected with the 8 th pin of the chip U2 through a capacitor C17, the 5 th pin of the chip U2 is connected with the 24 th pin SDA of the CPU U1, the 6 th pin of the chip U2 is connected with the 23 rd pin SCL of the CPU U1, and the 8 th pin of the chip U2 is connected with a power supply VCC; one end of the resistor R23 is connected with the 23 rd pin SCL of the CPU U1, the other end of the resistor R23 is connected with the power supply VCC, one end of the resistor R24 is connected with the 24 th pin SDA of the CPU U1, and the other end of the resistor R24 is connected with the power supply VCC.
Further, as shown in fig. 1, the lightning strike monitoring circuit further includes:
and the key module 5 is connected with the central processing unit 2 and is used for adjusting a clock or checking the working state information of the lightning protection device.
Further, as shown in fig. 2 and 3, the acquisition module 1 further includes a first resistor R1, a second resistor R27, a third resistor R28, a fourth resistor R29, a fifth resistor R30, and a sixth resistor R31;
the negative input end of the first optocoupler U3 is connected with the remote communication interface ADC, the positive input end of the first optocoupler U3 is grounded, the collector electrode of the first optocoupler U3 is connected with a power supply, the emitter electrode of the first optocoupler U3 is respectively connected with one end of the third resistor R28 and one end of the second resistor R27, and the other end of the third resistor R28 and the other end of the second resistor R27 are respectively connected with the central processor U1;
the input end of the AC-DC converter D1 is connected with the lightning stroke sensor, the positive output end of the AC-DC converter D1 is connected with the negative input end of the first optocoupler U3 through the first resistor R1, and the negative output end of the AC-DC converter D1 and the positive input end of the first optocoupler U3 are grounded;
the input end of the second optocoupler U4 is connected with the first end L1 of the three-phase electrical interface, the collector electrode of the second optocoupler U4 is respectively connected with the central processing unit U1 and one end of the fourth resistor R29, the other end of the fourth resistor R29 is connected with a power supply VCC, and the emitter electrode of the second optocoupler U4 is grounded; the input end of the third optocoupler U5 is connected with the second end L2 of the three-phase electrical interface, the collector electrode of the third optocoupler U5 is respectively connected with the central processing unit U1 and one end of the fifth resistor R30, the other end of the fifth resistor R30 is connected with a power supply VCC, and the emitter electrode of the third optocoupler U5 is grounded; the input end of the fourth optocoupler U6 is connected with the third end L3 of the three-phase electrical interface, the collector electrode of the fourth optocoupler U6 is respectively connected with the central processing unit U1 and one end of the sixth resistor R31, the other end of the sixth resistor R31 is connected with the power supply VCC, and the emitter electrode of the fourth optocoupler U6 is grounded.
The central processing unit U1 is preferably a processing chip with the model MB95F698K, the other end of the second resistor R27 is connected to the 39 th pin INT02 of the central processing unit U1, the other end of the third resistor R28 is connected to the 38 th pin INT01 of the central processing unit U1, the collector of the second optocoupler U4 is connected to the 44 th pin INT07 of the central processing unit U1, the collector of the third optocoupler U5 is connected to the 42 th pin INT05 of the central processing unit U1, and the collector of the fourth optocoupler U6 is connected to the 41 st pin INT04 of the central processing unit U1.
Further, as shown in fig. 4, the key module 5 includes a first key SW1, a second key SW2, a third key SW3, a fourth key SW4, a first capacitor C11, a second capacitor C12, a third capacitor C13, a fourth capacitor C14, a seventh resistor R17, an eighth resistor R18, a ninth resistor R19, a tenth resistor R20, and an eleventh resistor R21;
one end of the first key SW1 is connected to a power supply VCC through the seventh resistor R17, the other end of the first key SW1 is respectively connected to the central processing unit U1, one end of the first capacitor C11, one end of the eighth resistor R18, and the other end of the first capacitor C11 and the other end of the eighth resistor R18 are grounded;
one end of the second key SW2 is connected to the power VCC through the seventh resistor R17, the other end of the second key SW2 is respectively connected to the cpu U1, one end of the second capacitor C12, one end of the ninth resistor R19, and the other end of the second capacitor C12 and the other end of the ninth resistor R19 are grounded;
one end of the third key SW3 is connected to the power VCC through the seventh resistor R17, the other end of the third key SW3 is connected to the central processing unit U1, one end of the third capacitor C13, one end of the tenth resistor R20, and the other end of the third capacitor C13 and the other end of the tenth resistor R20 are grounded;
one end of the fourth button SW4 is connected to the power VCC through the seventh resistor R17, the other end of the fourth button SW4 is connected to the cpu U1, one end of the fourth capacitor C14, and one end of the eleventh resistor R21, and the other end of the fourth capacitor C14 and the other end of the eleventh resistor R21 are grounded.
The first key SW1, the second key SW2 and the third key SW3 are used for adjusting a clock or checking lightning current, and the fourth key SW4 is a reset button.
The central processor U1 is preferably a processing chip with a model MB95F698K, the other end of the first key SW1 is connected to the 33 th pin P64 of the central processor U1, the other end of the second key SW2 is connected to the 34 th pin P65 of the central processor U1, the other end of the third key SW3 is connected to the 35 th pin P66 of the central processor U1, and the other end of the fourth key SW4 is connected to the 36 th pin P67 of the central processor U1.
According to the embodiment of the invention, all data of the lightning protection device are summarized and uploaded to the background server for data analysis, so that a terminal computer such as data processing and the like can check the monitored working state of the lightning protection device at any time, and the circuit is simple; the surge protector is replaced or maintained, the rewiring is not needed, the power is not needed, and the network cable interface connection is replaced after being pulled down; the aluminum alloy shell is adopted, so that the volume is small, the installation is convenient, and the installation of the lightning protection device is not influenced; the network cable is directly connected to the network, so that the use is convenient; the lightning protection function is provided, so that the protection of the line-ground is realized, and the overvoltage between the electric circuit and the ground is eliminated.
Example two
The embodiment of the invention provides a lightning stroke monitoring system, referring to FIG. 6, which comprises N lightning protection devices 51, N lightning stroke monitoring circuits 52 and a background server 53; wherein N is more than or equal to 1;
the N lightning protection devices 51 are connected with the N lightning stroke monitoring circuits 52 in a one-to-one correspondence manner, and the N lightning stroke monitoring circuits 52 are respectively connected with the background server 53; each lightning strike monitoring circuit 52 is a lightning strike monitoring circuit as described above.
The background server gathers all lightning protection devices in one place through the lightning stroke monitoring circuit for management, is convenient to maintain, and increases safety and reliability.
Example III
The embodiment of the invention provides a lightning stroke monitoring method, which can be applied to the lightning stroke monitoring circuit of the embodiment, as shown in fig. 7, and comprises the following steps:
s1, collecting working signals of a lightning protection device;
s2, processing the working signal to acquire the working state information of the lightning protection device;
and S3, sending the working state information to a background server for analysis.
According to the embodiment of the invention, the working signals of the lightning protection device are collected through the collecting module, the collected working signals are processed through the central processing unit, the working state information of the lightning protection device is obtained, and then the working state information of the lightning protection device is summarized to the background server through the transmission module for data analysis, so that a user can check the working state of the lightning protection device in real time, the real-time monitoring of lightning stroke is realized, and the circuit structure is simple.
The foregoing description of the preferred embodiments of the invention is not intended to limit the invention to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the invention are intended to be included within the scope of the invention.
Claims (9)
1. A lightning strike monitoring circuit, comprising:
the acquisition module is connected with the lightning protection device and used for acquiring working signals of the lightning protection device;
the central processing unit is connected with the acquisition module and used for processing the working signals and acquiring the working state information of the lightning protection device;
the transmission module is respectively connected with the central processor and the background server and is used for sending the working state information to the background server for analysis;
the working signals of the lightning protection device comprise remote signal, lightning stroke induction signal and three-phase power;
the acquisition module comprises a first optical coupler, a second optical coupler, a third optical coupler, a fourth optical coupler and an alternating current-direct current converter;
the first optical coupler is respectively connected with a remote communication interface of the lightning protection device and the central processing unit, so that remote communication signals output by the remote communication interface are transmitted to the central processing unit through the first optical coupler;
the AC-DC converter is respectively connected with the lightning stroke sensor of the lightning stroke protector and the first optocoupler, so that lightning stroke induction signals output by the lightning stroke sensor are sequentially transmitted to the central processing unit through the AC-DC converter and the first optocoupler;
the second optocoupler, the third optocoupler and the fourth optocoupler are connected with the three-phase electric interface and the central processor, so that three-phase electricity output by the three-phase electric interface is transmitted to the central processor through the second optocoupler, the third optocoupler and the fourth optocoupler respectively.
2. The lightning strike monitoring circuit of claim 1, wherein the operational status information of the lightning protection device includes operational status information, a number of lightning strikes, and a lightning strike current;
the central processing unit is particularly used for processing the remote signal to obtain running state information, carrying out accumulated calculation on the lightning stroke induction signal to obtain the lightning stroke frequency, and processing the three-phase power to obtain the lightning stroke current.
3. The lightning strike monitoring circuit of claim 1, wherein the transmission module comprises:
the network converter is connected with the central processing unit and used for converting the working state information of the lightning protection device into network signals;
and the transmission chip is connected with the network converter and used for sending the working state information to the background server in a network signal mode.
4. The lightning strike monitoring circuit of claim 1, wherein the lightning strike monitoring circuit further comprises:
and the display module is connected with the central processing unit and used for displaying the working state information of the lightning protection device.
5. The lightning strike monitoring circuit of claim 1, wherein the lightning strike monitoring circuit further comprises:
and the key module is connected with the central processing unit and used for adjusting a clock or checking the working state information of the lightning protection device.
6. The lightning strike monitoring circuit of claim 1, wherein the acquisition module further comprises a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, and a sixth resistor;
the negative input end of the first optocoupler is connected with the remote communication interface, the positive input end of the first optocoupler is grounded, the collector electrode of the first optocoupler is connected with a power supply, the emitter electrode of the first optocoupler is respectively connected with one end of the third resistor and one end of the second resistor, and the other end of the third resistor and the other end of the second resistor are respectively connected with the central processor;
the input end of the AC-DC converter is connected with the lightning stroke sensor, the positive output end of the AC-DC converter is connected with the negative input end of the first optocoupler through the first resistor, and the negative output end of the AC-DC converter and the positive input end of the first optocoupler U3 are grounded;
the input end of the second optical coupler is connected with the first end of the three-phase electric interface, the collector electrode of the second optical coupler is respectively connected with the central processing unit and one end of the fourth resistor, the other end of the fourth resistor is connected with a power supply, and the emitter electrode of the second optical coupler is grounded; the input end of the third optical coupler is connected with the second end of the three-phase electrical interface, the collector electrode of the third optical coupler is respectively connected with the central processing unit and one end of the fifth resistor, the other end of the fifth resistor is connected with a power supply, and the emitter electrode of the third optical coupler is grounded; the input end of the fourth optical coupler is connected with the third end of the three-phase electric interface, the collector electrode of the fourth optical coupler is respectively connected with the central processing unit and one end of the sixth resistor, the other end of the sixth resistor is connected with a power supply, and the emitter electrode of the fourth optical coupler is grounded.
7. The lightning strike monitoring circuit of claim 5, wherein the key module comprises a first key, a second key, a third key, a fourth key, a first capacitor, a second capacitor, a third capacitor, a fourth capacitor, a seventh resistor, an eighth resistor, a ninth resistor, a tenth resistor, and an eleventh resistor;
one end of the first key is connected with a power supply through the seventh resistor, the other end of the first key is respectively connected with the central processing unit, one end of the first capacitor and one end of the eighth resistor, and the other end of the first capacitor and the other end of the eighth resistor are grounded;
one end of the second key is connected with a power supply through the seventh resistor, the other end of the second key is respectively connected with the central processing unit, one end of the second capacitor and one end of the ninth resistor, and the other end of the second capacitor and the other end of the ninth resistor are grounded;
one end of the third key is connected with a power supply through the seventh resistor, the other end of the third key is respectively connected with the central processing unit, one end of the third capacitor and one end of the tenth resistor, and the other end of the third capacitor and the other end of the tenth resistor are grounded;
one end of the fourth key is connected with a power supply through the seventh resistor, the other end of the fourth key is respectively connected with the central processing unit, one end of the fourth capacitor and one end of the eleventh resistor, and the other end of the fourth capacitor and the other end of the eleventh resistor are grounded.
8. The lightning stroke monitoring system is characterized by comprising N lightning stroke monitoring devices, N lightning stroke monitoring circuits and a background server; wherein N is more than or equal to 1;
the N lightning protection devices are connected with the N lightning stroke monitoring circuits in a one-to-one correspondence manner, and the N lightning stroke monitoring circuits are respectively connected with the background server; each lightning strike monitoring circuit is a lightning strike monitoring circuit as claimed in any one of claims 1 to 7.
9. A lightning strike monitoring method applicable to the lightning strike monitoring circuit according to any one of claims 1 to 7, characterized in that the lightning strike monitoring method comprises:
collecting working signals of the lightning protection device;
processing the working signal to acquire the working state information of the lightning protection device;
and sending the working state information to a background server for analysis.
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