A multi-user power collection terminal power outage and restoration monitoring system and monitoring method

Abstract

The present invention relates to a power outage and restoration monitoring system and method for multi-user power collection terminals. A power outage and restoration monitoring system for multi-user power collection terminals comprises: a terminal sensing terminal, a plurality of power sensing modules connected to the terminal sensing terminal, each of the power sensing modules being connected to a plurality of power collection terminals; the terminal sensing terminal comprises a main controller, an event monitoring circuit, a downlink main communication circuit and an uplink main communicator; the event monitoring circuit, the downlink main communication circuit and the uplink main communicator are respectively connected to the main controller. The present invention adopts a strong current sensing circuit of the power sensing module to monitor the power outage and restoration status of the incoming line of the power collection terminal, and actively triggers the event reporting process based on the power outage and restoration event change information of the power collection terminal. This active triggering and reporting method is more real-time and stronger than the traditional continuous rotation training method; and the terminal sensing terminal microcontroller consumes less resources, and the main controller has a light processing burden.

Description

Technical Field

[0001] The present invention relates to the field of power distribution networks, and in particular to a power outage and restoration monitoring system and a monitoring method for multi-user power collection terminals. Background Art

[0002] In 2017, in order to fully tap the value of smart electricity meter data assets, give full play to its supporting role in the operation and maintenance management of distribution networks, and effectively improve the operation and maintenance management and quality service level of distribution networks, State Grid Corporation of China formulated a working method for smart electricity meters to support the operation and maintenance management of distribution networks. At the same time, it issued the State Grid Corporation of China's Notice on Issuing the Working Plan for Smart Electricity Meters to Support the Operation and Maintenance Management of Distribution Networks (State Grid Operation and Inspection

[2017] No. 624). One of the key application work contents is the reporting of power outages and restorations of typical low-voltage users. The purpose is to realize the real-time active transmission of power outage and restoration event information of low-voltage household meters (referring to electricity meters) to the collection terminal and the main station. Combined with the topological relationship of the low-voltage substation, it can realize the rapid positioning of the user range after the power outage (strive to be within 5 minutes), support the rapid repair of low-voltage faults and low-voltage power supply reliability analysis.

[0003] The existing power grid electricity consumption information collection system mainly uses the RS485 communication rotation training method to monitor the power outage and restoration status of multiple users' RS485 electricity meters. That is, the host such as the collection terminal or the terminal sensing terminal reads the electricity meter data through rotation training to determine whether the electricity meter has been restored to power. Generally, the collection terminal or the terminal sensing terminal is connected to multiple RS485 electricity meters through the downstream RS485 interface, and the communication adopts RS485 bus communication.

[0004] Existing collection terminals or terminal sensing terminals communicate with multiple RS485 energy meters using the RS485 bus. Since RS485 operates in a master-slave communication mode, with the collection terminal or terminal sensing terminal typically serving as the master and the RS485 energy meter as the slave, the RS485 energy meter cannot actively communicate with the master. Instead, the master, such as the collection terminal or terminal sensing terminal, typically uses a scheduled round-robin reading of the RS485 energy meter to determine whether the meter has been powered on or restored. If a sufficient number of RS485 energy meters are connected to the collection terminal or terminal sensing terminal, this round-robin reading method takes approximately 5 seconds to determine whether a meter has been powered on or restored. For 32 meters, this ideally takes 150 seconds, significantly reducing the real-time nature of the power outage / restore determination. Furthermore, the current RS485 energy meter communication success rate does not reach 100%. This method of reading RS485 energy meters through round-robin reading is unreliable and prone to false positives and missed detections. For example, patent document ZL201811574646.5 discloses a method for handling power outage and power restoration events of an electricity meter. The method involves the electricity meter self-checking the power outage and power restoration situation, and then sending the corresponding event information upward. Although this reduces the workload of the collection terminal to a certain extent, there are still problems with low terminal monitoring efficiency and judgment reliability, and it is impossible to truly control the actual situation of the connected electricity meter.

[0005] Therefore, the existing multi-user power outage and restoration monitoring system has the following defects: (1) The real-time monitoring of the power outage and restoration status of the RS485 energy meter is not high; (2) The reliability of the RS485 energy meter power outage and restoration event judgment is not high, and there are misjudgments and missed judgments. There is still room for improvement and enhancement. Summary of the Invention

[0006] In view of the above-mentioned deficiencies in the prior art, the object of the present invention is to provide a multi-user power collection terminal power outage and restoration monitoring system and monitoring method, which can solve the problems of low real-time and reliability of RS485 power collection terminal rotation training power outage and restoration status monitoring and high host resource consumption in the background technology.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions:

[0008] A multi-user power collection terminal power outage and restoration monitoring system comprises: a terminal sensing terminal, a plurality of power sensing modules connected to the terminal sensing terminal, each of the power sensing modules being connected to a plurality of power collection terminals;

[0009] The terminal sensing terminal includes a main controller, an event monitoring circuit, a downlink main communication circuit and an uplink main communicator; the event monitoring circuit, the downlink main communication circuit and the uplink main communicator are respectively connected to the main controller; the main controller is connected to the upper device through the uplink main communicator;

[0010] The multiple power supply sensing modules all include a slave controller, an event triggering circuit, an uplink slave communication circuit, a downlink multi-channel communication module, and a strong power multi-channel sensing module; the event triggering circuit, the uplink slave communication circuit, the downlink multi-channel communication module, and the strong power multi-channel sensing module are respectively connected to the slave controller; the event triggering circuit is connected to the event master monitoring circuit; the uplink slave communication circuit is connected to the downlink master communication circuit; the downlink multi-channel communication module is connected to the multiple power acquisition terminals; the strong power multi-channel sensing module has multiple sensing ports, which are respectively connected to the upper ports of the multiple power acquisition terminals.

[0011] Preferably, the multi-user power collection terminal power outage and restoration monitoring system, the event monitoring circuit includes a first resistor, a second resistor, a first capacitor, a first isolation optocoupler, a third resistor, a first diode, a second capacitor, a first TVS tube and a first terminal interface; one end of the first resistor is connected to the main controller, and the other end is connected to one end point of the first isolation optocoupler; the two ends of the first capacitor are respectively connected to the two end points on the output side of the first isolation optocoupler, one of which is the same as the end point connected to the first resistor, and one end of the second resistor is also connected to the end point; the third resistor and the first diode are simultaneously connected to the input side of the first isolation optocoupler, and are connected at the same end; after the second capacitor is connected in parallel with the first TVS tube, it is connected to the input side of the first isolation optocoupler, and at the same time to the connection of the first diode, and to the first terminal interface; the other end of the second resistor is connected to electricity; the other end of the third resistor is connected to electricity.

[0012] Preferably, the multi-user power collection terminal power outage and restoration monitoring system, the event trigger circuit includes a fourth resistor, a fifth resistor, a second isolation optocoupler, a second diode, a third capacitor, a second TVS tube and a second terminal interface; one end of the fifth resistor is connected to the slave controller, and the other end is connected to an end point on the input side of the second isolation optocoupler; one end of the fourth resistor is connected to the other end point on the output side of the second isolation optocoupler, and the other end is connected to electricity; after the second diode, the third capacitor and the second TVS tube are connected in parallel, they are respectively connected to the two end points on the output side of the second isolation optocoupler, and are connected to the second terminal interface.

[0013] Preferably, in the multi-user power collection terminal power outage and restoration monitoring system, the uplink main communicator adopts an external independent modular device, including one or more of a narrowband communication device, a micro-power wireless communication device, an HPLC high-speed carrier communication device and an HPLC wireless dual-mode communication device.

[0014] Preferably, in the multi-user electricity collection terminal power outage and restoration monitoring system, the terminal sensing terminal further includes a main power module, and the main power module supplies power to the terminal sensing terminal through the downlink main communication circuit.

[0015] Preferably, in the multi-user electricity collection terminal power outage and restoration monitoring system, the power sensing module also includes a DC power supply circuit, which is respectively connected to the main power supply module and the slave controller, and obtains power from the main power supply module to supply power to the power sensing module.

[0016] A method for monitoring power outage and restoration of a multi-user power collection terminal using the multi-user power collection terminal power outage and restoration monitoring system comprises the following steps:

[0017] S1, the plurality of power sensing modules all perform one-to-one matching of the power collection terminal file addresses of the downstream power collection terminals and the corresponding sensing ports of the strong power multi-channel sensing modules through their respective downlink multi-channel communication modules and the strong power multi-channel sensing modules, and all send the matched power collection terminal file information to the terminal sensing terminal;

[0018] S2. The plurality of power sensing modules detect the power outage and restoration status information of the connected power collection terminal in real time through their respective strong power multi-channel sensing modules, and send the power outage and restoration status information to their respective slave controllers;

[0019] S3, the slave controller determines whether there is power outage and restoration status change information. If so, the slave controller controls the indication state of the event trigger circuit to be the event state, and executes step S4; if not, the indication state of the event trigger circuit is the normal state, and executes step S2;

[0020] S4. The terminal perception terminal monitors the indication status of the event trigger circuits in multiple power perception modules in real time through the event monitoring circuit. If the indication status of any of the event trigger circuits is an event status, a reporting instruction is sent to the corresponding power perception module, and the reported power outage and restoration status information is sent to the upper device through the upstream main communicator; otherwise, no operation is performed.

[0021] Preferably, in the method for monitoring power outages and restorations of multi-user electricity collection terminals, in step S3, in the indication state of the event trigger circuit, the event state is that the event trigger circuit sends a low-level signal to the outside, and the normal state is that the event trigger circuit sends a high-level signal to the outside.

[0022] Preferably, in the method for monitoring power outage and restoration of a multi-user power collection terminal, in step S1, when the multiple power sensing modules send the power collection terminal file information to the terminal sensing terminal, the module file information of each power sensing module is sent simultaneously.

[0023] Preferably, in the method for monitoring power outage and restoration of a multi-user power collection terminal, in step S4, reporting the power outage and restoration status information includes:

[0024] S41, the terminal perception terminal sends an event reporting request to the server through the uplink main communicator, and waits for the server to issue a query instruction;

[0025] S42: The terminal sensing terminal receives the query instruction and sends the user power collection terminal file information and the corresponding power outage and restoration status information to the server;

[0026] S43, waiting for a first predetermined time to receive a confirmation instruction sent by the server, if the confirmation instruction is received, automatically clearing the reported event information and executing step S44; otherwise, executing step S45;

[0027] S44, the terminal sensing terminal determines whether there are other events to report, if so, executes step S41; if not, does not perform any operation;

[0028] S45. The terminal perception terminal determines whether the number of failed reports for the same event exceeds a predetermined number. If so, the event is stored and waits for the next event report to be reported together; if not, step S41 is executed.

[0029] Compared with the prior art, the present invention provides a multi-user power collection terminal power outage and restoration monitoring system and monitoring method, which has the following effects: the present invention adopts a power sensing module strong power sensing circuit to monitor the power outage and restoration status of the power collection terminal incoming line, and actively triggers the event reporting process based on the power outage and restoration time change information of the power collection terminal; the terminal sensing terminal determines whether there is a power outage and restoration event of the power collection terminal according to the level status received by the event monitoring circuit, and the terminal sensing terminal reads the power outage and restoration event information of the power collection terminal saved by each power sensing module. Compared with the traditional continuous rotation training method, this active triggering reporting method is more real-time and stronger; and the terminal sensing terminal microcontroller resource consumption is small, and the main controller processing burden is light. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a structural block diagram of the power outage and restoration monitoring system for multiple user power collection terminals in the present invention;

[0031] Figure 2 is a circuit diagram of an event monitoring circuit in the present invention;

[0032] Figure 3 It is a circuit diagram of the event trigger circuit in the present invention. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solution and effect of the present invention clearer and more specific, the present invention is further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0034] Please also refer to Figure 1-Figure 3 The present invention provides a multi-user power collection terminal power outage and restoration monitoring system, comprising: a terminal sensing terminal 1, a plurality of power sensing modules 2 connected to the terminal sensing terminal 1, each of the power sensing modules 2 being connected to a plurality of power collection terminals 3; the power collection terminal 3 is preferably an electric energy meter 3, which is a commonly used electric energy meter in the art and has a communication function;

[0035] The terminal sensing terminal 1 includes a main controller 11, an event monitoring circuit 12, a downlink main communication circuit 13 and an uplink main communicator 14; the event monitoring circuit 12, the downlink main communication circuit 13 and the uplink main communicator 14 are respectively connected to the main controller 11;

[0036] The multiple power supply sensing modules 2 all include a slave controller 21, an event triggering circuit 22, an uplink slave communication circuit 23, a downlink multi-channel communication module 24, and a strong power multi-channel sensing module 25; the event triggering circuit 22, the uplink slave communication circuit 23, the downlink multi-channel communication module 24 and the strong power multi-channel sensing module 25 are respectively connected to the slave controller 21; the event triggering circuit 22 is connected to the time master monitoring circuit; the uplink slave communication circuit 23 is connected to the downlink master communication circuit 13; the downlink multi-channel communication module 24 is connected to the multiple power collection terminals 3; the strong power multi-channel sensing module 25 is connected to the upper ports of the multiple power collection terminals 3.

[0037] Specifically, the main controller 11 is preferably a microcontroller U1, which adopts the R5F51138 processor chip of Renesas Electronics, and is responsible for the operation control, data acquisition, power outage and restoration event monitoring and reporting functions of the entire terminal; the downlink main communication circuit 13 is preferably an RS485 communication circuit, and of course it can also be other communication devices. The present invention does not make specific limitations. The downlink main communication circuit 13 uses the well-known technology of RS485 communication circuit in this field, and is not specifically limited. Generally, it is composed of a communication isolation optocoupler, an RS485 interface chip and its peripheral circuits. The RS485 interface chip can be an interface chip of Jingyan Technology Co., Ltd. with model AZRS485, and the communication isolation optocoupler can be an isolation optocoupler of Lite-On with model LTV-816S. The slave controller 21 in the power sensing module 2 is responsible for the operation control, data collection, management and storage, and power outage and restoration event monitoring and reporting of the entire power sensing module 2. The slave controller 21 can utilize the Renesas Electronics R5F51138 microcontroller chip U2. The uplink slave communication circuit 23 preferably utilizes an RS485 communication circuit, cooperating with the downlink master communication circuit 13 and having the same circuit configuration as the downlink master communication circuit 13. The downlink multi-channel communication module 24 also utilizes an RS485 communication circuit for communication, differing in that it comprises multiple downlink communication units, each of which is connected to the power collection terminal 3. Preferably, the power collection terminal 3 also utilizes an RS485 communication circuit.

[0038] The present invention also provides a method for monitoring power outage and restoration of a multi-user power collection terminal 3 using the power outage and restoration monitoring system for the multi-user power collection terminal 3, characterized in that it comprises the steps of:

[0039] S1, the multiple power sensing modules 2 all match the power collection terminal file address of the connected power collection terminal 3 with the corresponding sensing port of the strong power multi-channel sensing module 25 through their respective downlink multi-channel communication modules 24 and the strong power multi-channel sensing modules 25, and all send the matched power collection terminal file information to the terminal sensing terminal 1;

[0040] S2, the multiple power sensing modules 2 all detect the power outage and restoration status information of the power collection terminal 3 in real time through their respective strong power multi-channel sensing modules 25, and send the power outage and restoration status information to their respective slave controllers 21;

[0041] S3, the slave controller 21 determines whether there is power outage and restoration status change information. If so, the slave controller 21 controls the indication status of the event trigger circuit 22 to be the event status, and executes step S4; if not, the indication status of the event trigger circuit 22 is the normal status, and executes step S2;

[0042] S4. The end perception terminal 1 monitors the indication status of the event trigger circuit 22 in multiple power perception modules 2 in real time through the event monitoring circuit 12. If the indication status of any of the event trigger circuits 22 is an event status, a reporting instruction is sent to the corresponding power perception module 2, and the reported power outage and restoration status information is sent out through the upstream main communicator 14; otherwise, no operation is performed.

[0043] The terminal sensing terminal 1 supplies power to the power sensing module 2 , the terminal sensing terminal 1 and the power sensing module 2 communicate using the RS485 bus, and the power sensing module 2 and the power collection terminal 3 communicate using the RS485 bus.

[0044] The terminal sensing terminal 1 is used to read the RS485 power collection terminal file and the corresponding power outage and restoration status information stored in the power sensing module 2, and report the file communication address and the corresponding power outage and restoration status information to the upper terminal via carrier.

[0045] The power sensing module 2 is used to read the RS485 power acquisition terminal and monitor and save the power outage and restoration status information of the RS485 power acquisition terminal, and establish a one-to-one correspondence with the power acquisition terminal file. Once it detects that there is a change in the power outage and restoration status information of any one or several RS485 power acquisition terminals connected to it, the power sensing module 2 will notify the end sensing terminal 1 through the event trigger circuit 22 to read the event information. After the end sensing terminal 1 detects the level change of the event monitoring circuit 12, it will actively read the power outage and restoration status information of the RS485 power acquisition terminals saved by each power sensing module 2.

[0046] Please refer to Figure 2As a preferred solution, in this embodiment, the event monitoring circuit 12 includes a first resistor R1, a second resistor R2, a first capacitor C1, a first isolation optocoupler D1, a third resistor R3, a first diode V1, a second capacitor C2, a first TVS diode V2, and a first terminal interface XS1; one end of the first resistor R1 is connected to the main controller 11, and the other end is connected to one end point of the first isolation optocoupler D1; both ends of the first capacitor C1 are connected to two ends of the output side of the first isolation optocoupler D1, one of which is the same as the end point connected to the first resistor R1, and one end of the second resistor R2 is also connected to the end point; the third resistor R3 and the first diode V1 are simultaneously connected to the input side of the first isolation optocoupler D1 and are connected at the same end; the second capacitor is connected in parallel with the first TVS diode V2, and is connected to the input side of the first isolation optocoupler D1, and is also connected to the connection of the first diode V1, and is connected to the first terminal interface XS1; the other end of the second resistor R2 is connected to a power supply; and the other end of the third resistor R3 is connected to a power supply.

[0047] Specifically, the event monitoring circuit 12 is used to monitor the status of the event trigger circuit 22 of the multiple power sensing modules 2. When the signal input to the controller by the event monitoring circuit 12 is at a low level, it indicates that one or more power sensing modules 2 have power outage and restoration event reporting information. At this time, the terminal sensing terminal 1 needs to read the RS485 power collection terminal files and corresponding power outage and restoration event reporting information stored in each power sensing module 2.

[0048] When the signal inputted by the event monitoring circuit 12 to the controller is at a high level, it indicates that the downstream power sensing module 2 has not reported any power outage or power restoration event information.

[0049] Event monitoring circuit input level Representative meaning Low level: 0 One or more power sensing modules 2 report power outage and power recovery events High level: 1 All power sensing modules 2 do not report power outage and power recovery events.

[0050] The event monitoring circuit 12 is connected to the IO port of the microcontroller R5F51138, and its circuit mainly consists of the first isolation optocoupler, the first diode, the first TVS tube, the first terminal and a plurality of resistors and capacitors.

[0051] The event monitoring circuit 12 mainly comprises a microcontroller U1 in the main controller 11, a first resistor R1, a second resistor R2, a first capacitor C1, a first isolation optocoupler D1, a third resistor R3, a first diode V1, a second capacitor C2, a first TVS tube V2 and a first terminal interface XS1. Figure 2 In the figure, the microcontroller U1 only shows part of the diagram, but it is a well-known technology in the art and does not affect the specific implementation.

[0052] The P12 pin of the main controller 11 is connected to the 4th pin of the first isolation optocoupler D1 through the first resistor R1, wherein the 4th pin is also connected to the pull-up resistor R2 and the filter capacitor C1 respectively, and the second resistor R2 is pulled up to the 3.3V power supply; the 1st pin of the first isolation optocoupler D1 is connected to the pull-up resistor R3 and one end of the first diode V1 respectively, wherein the third resistor R3 is pulled up to the 5V power supply; the 2nd pin of the first isolation optocoupler D1 is connected to the filter capacitor C1 and the first TVS tube V2, and is also connected to the other end of the first diode V1, and is also connected to the 3rd pin of the first terminal interface XS1.

[0053] The main controller 11 uses the R5F51138 microcontroller of Renesas Electronics, the resistance values ​​of the first resistor R1, the first resistor R2 and the third resistor R3 are 100Ω, 1000Ω and 2000Ω respectively, the capacitance values ​​of the first capacitor C1 and the second capacitor C2 are 0.1uF and 1000pF respectively, the first isolation optocoupler D1 uses the isolation optocoupler model LTV-816S of Lite-On, the first diode V1 uses the LL4148 diode of Yangzhou Yangjie Company, the first TVS tube V2 uses the SMBJ5.0CA transient overvoltage suppression TVS tube of Junyao, and the first terminal interface XS1 uses the terminal socket model MB1.5H / V3.81 / 12-GN of Utele Electric Co., Ltd.

[0054] Please refer to Figure 3 As a preferred solution, in this embodiment, the event trigger circuit 22 includes a fourth resistor R4, a fifth resistor R5, a second isolation optocoupler D2, a second diode V3, a third capacitor C3, a second TVS tube V4 and a second terminal interface XS2; one end of the fifth resistor R5 is connected to the slave controller 21, and the other end is connected to one end point on the input side of the second isolation optocoupler D2; one end of the fourth resistor R4 is connected to the other end point on the output side of the second isolation optocoupler D2, and the other end is connected to power; the second diode V3, the third capacitor C3, and the second TVS tube V4 are connected in parallel and respectively connected to the two end points on the output side of the second isolation optocoupler D2, and are connected to the second terminal interface XS2.

[0055] Specifically, the PD2 pin of the slave controller 21 is connected to the 2nd pin of the second isolation optocoupler D2 through the fifth resistor R5, the 1st pin of the second isolation optocoupler D2 is connected to the fourth resistor R4, and the other end of the fourth resistor R4 is connected to the 3.3V power supply; the 3rd pin of the second isolation optocoupler D2 and the anode of the second diode V3 are connected to the reference ground, and the third capacitor C3 and one end of the second TVS tube V4 are also connected to the reference ground; the 4th pin of the second isolation optocoupler D2 is respectively connected to the cathode of the second diode V3, the third capacitor C3 and one end of the second TVS tube V4, and is also connected to the 5th pin of the second terminal interface XS2.

[0056] Among them, the slave controller 21 uses Renesas Electronics' R5F51138 microcontroller U2, the fifth resistor R5 and the fourth resistor R4 have resistance values ​​of 100Ω and 1000Ω respectively, the first diode V1 uses Yangzhou Yangjie Company's LL4148 diode, the third capacitor C3 has a capacitance of 1000pF, the second TVS tube V4 uses Junyao's SMBJ5.0CA transient overvoltage suppression TVS tube, and the second terminal interface XS2 uses the terminal socket model MB1.5H / V3.81 / 8-GN of Utele Electric Co., Ltd.

[0057] As a preferred solution, in this embodiment, the uplink main communicator 14 adopts an external independent modular device, including one or more of a narrowband communication device, a micro-power wireless communication device, an HPLC high-speed carrier communication device and an HPLC wireless dual-mode communication device. Preferably, the uplink main communicator 14 mainly realizes the uplink communication between the terminal perception terminal 1 and the concentrator, TTU and other intelligent devices or servers. The uplink main communicator 14 adopts an external modular pluggable design, which is installed on the terminal perception terminal 1 body. Since it adopts the State Grid standard interface, it can support narrowband, micro-power wireless, HPLC (broadband Power Line Communication) high-speed carrier and HPLC wireless dual-mode and other communication modes by replacing different communication modules. The HPLC high-speed carrier can use the Neusoft sixth-generation I-type supercapacitor high-speed HPLC carrier module with the model number PLCS1667-D-CJQ-GW13 of Qingdao Neusoft Carrier Technology Co., Ltd.

[0058] As a preferred solution, in this embodiment, the terminal sensing terminal 1 further includes a main power supply module, which supplies power to the terminal sensing terminal 1 via the downlink main communication circuit 13. The main power supply module primarily converts AC220V AC power into various DC power supplies required by the terminal. The power supply module also provides DC power to the multiple power sensing modules 2, such as the power supply connected to the second resistor, the third resistor, and the fourth resistor.

[0059] As a preferred solution, in this embodiment, the power sensing module 2 also includes a DC power supply circuit, which is connected to the main power module and the slave controller respectively, and obtains power from the main power module to supply power to the power sensing module 2.

[0060] As a preferred solution, in this embodiment, in step S3, in the indication state of the event trigger circuit 22, the event state is that the event trigger circuit 22 sends a low-level signal to the outside, and the normal state is that the event trigger circuit 22 sends a high-level signal to the outside.

[0061] As a preferred solution, in this embodiment, in step S1, when the multiple power sensing modules 2 send the power collection terminal file information to the terminal sensing terminal 1, the module file information of each power sensing module 2 is sent simultaneously.

[0062] As a preferred solution, in this embodiment, in step S4, reporting the power outage and restoration status information includes:

[0063] S41, the terminal perception terminal 1 sends an event reporting request to the server through the uplink main communicator 14, and waits for the server to issue a query instruction;

[0064] S42: The terminal sensing terminal 1 receives the query instruction and sends the user power collection terminal file information and the corresponding power outage and restoration status information to the server;

[0065] S43, waiting for a first predetermined time to receive a confirmation instruction sent by the server, if the confirmation instruction is received, automatically clearing the reported event information and executing step S44; otherwise, executing step S45;

[0066] S44, the terminal sensing terminal 1 determines whether there are other events to report, if so, executes step S41; if not, does not perform any operation;

[0067] S45. The terminal sensing terminal 1 determines whether the number of failed event reports exceeds a predetermined number. If so, the current event report is stored and reported together with the next event report. If not, step S41 is executed. Preferably, the predetermined number is 8, and the first predetermined time is 5-10 seconds. Meanwhile, the unreported event data may be stored in a separate memory independent of the main controller or in the main controller's internal memory, which is not specifically limited in the present invention.

[0068] It is understandable that those skilled in the art can make equivalent substitutions or changes based on the technical solution and inventive concept of the present invention, and all these changes or substitutions should fall within the scope of protection of the claims attached to the present invention.

Claims

1. A multi-user power collection terminal power outage and restoration monitoring system, characterized in that: include: An end sensing terminal, a plurality of power sensing modules connected to the end sensing terminal, each of the power sensing modules being connected to a plurality of power collection terminals; The terminal sensing terminal includes a main controller, an event monitoring circuit, a downlink main communication circuit and an uplink main communicator; the event monitoring circuit, the downlink main communication circuit and the uplink main communicator are respectively connected to the main controller; the main controller is connected to the upper device through the uplink main communicator; The multiple power sensing modules all include a slave controller, an event trigger circuit, an uplink slave communication circuit, a downlink multi-channel communication module, and a strong power multi-channel sensing module; the event trigger circuit, the uplink slave communication circuit, the downlink multi-channel communication module, and the strong power multi-channel sensing module are respectively connected to the slave controller; the event trigger circuit is connected to the event master monitoring circuit; the uplink slave communication circuit is connected to the downlink master communication circuit; the downlink multi-channel communication module is connected to the multiple power acquisition terminals; the strong power multi-channel sensing module has multiple sensing ports, which are respectively connected to the upper ports of the multiple power acquisition terminals, and the event monitoring circuit is used to monitor the event trigger circuit status of the multiple power sensing modules; The event monitoring circuit includes a first resistor, a second resistor, a first capacitor, a first isolation optocoupler, a third resistor, a first diode, a second capacitor, a first TVS tube and a first terminal interface; one end of the first resistor is connected to the main controller, and the other end is connected to an end point of the first isolation optocoupler; the two ends of the first capacitor are respectively connected to the two ends of the output side of the first isolation optocoupler, one of which is the same as the end point connected to the first resistor, and one end of the second resistor is also connected to the end point; the third resistor and the first diode are simultaneously connected to the input side of the first isolation optocoupler and are connected at the same end; after the second capacitor is connected in parallel with the first TVS tube, it is connected to the input side of the first isolation optocoupler, and is simultaneously connected to the connection of the first diode and the first terminal interface; the other end of the second resistor is connected to electricity; the other end of the third resistor is connected to electricity; The event trigger circuit includes a fourth resistor, a fifth resistor, a second isolation optocoupler, a second diode, a third capacitor, a second TVS tube and a second terminal interface; one end of the fifth resistor is connected to the slave controller, and the other end is connected to an end point on the input side of the second isolation optocoupler; one end of the fourth resistor is connected to the other end point on the output side of the second isolation optocoupler, and the other end is connected to electricity; the second diode, the third capacitor, and the second TVS tube are connected in parallel, respectively connected to the two end points on the output side of the second isolation optocoupler, and connected to the second terminal interface.

2. The multi-user power collection terminal power outage and restoration monitoring system according to claim 1 is characterized in that: The uplink main communicator adopts an external independent modular device, including one or more of a narrowband communication device, a micro-power wireless communication device, an HPLC high-speed carrier communication device and an HPLC wireless dual-mode communication device.

3. The multi-user power collection terminal power outage and restoration monitoring system according to claim 1 is characterized in that: The terminal perception terminal further includes a main power module, which supplies power to the terminal perception terminal through the downlink main communication circuit.

4. The multi-user power collection terminal power outage and restoration monitoring system according to claim 3 is characterized in that: The power sensing module further includes a DC power supply circuit, which is connected to the main power module and the slave controller respectively, and obtains power from the main power module to supply power to the power sensing module.

5. A method for monitoring power outage and restoration of a multi-user power collection terminal using the multi-user power collection terminal power outage and restoration monitoring system according to any one of claims 1 to 4, characterized in that: Including steps: S1, the plurality of power sensing modules all perform one-to-one matching of the power collection terminal file addresses of the downstream power collection terminals and the corresponding sensing ports of the strong power multi-channel sensing modules through their respective downlink multi-channel communication modules and the strong power multi-channel sensing modules, and all send the matched power collection terminal file information to the terminal sensing terminal; S2. The plurality of power sensing modules detect the power outage and restoration status information of the connected power collection terminal in real time through their respective strong power multi-channel sensing modules, and send the power outage and restoration status information to their respective slave controllers; S3, the slave controller determines whether there is power outage and restoration status change information. If so, the slave controller controls the indication state of the event trigger circuit to be the event state, and executes step S4; if not, the indication state of the event trigger circuit is the normal state, and executes step S2; S4. The terminal perception terminal monitors the indication status of the event trigger circuits in multiple power perception modules in real time through the event monitoring circuit. If the indication status of any of the event trigger circuits is an event status, a reporting instruction is sent to the corresponding power perception module, and the reported power outage and restoration status information is sent to the upper device through the upstream main communicator; otherwise, no operation is performed.

6. The method for monitoring power outage and restoration of a multi-user power collection terminal according to claim 5, characterized in that: In step S3, in the indication state of the event trigger circuit, the event state is that the event trigger circuit sends a low-level signal to the outside, and the normal state is that the event trigger circuit sends a high-level signal to the outside.

7. The method for monitoring power outage and restoration of a multi-user power collection terminal according to claim 5, characterized in that: In the step S1, when the plurality of power sensing modules send the power collection terminal profile information to the terminal sensing terminal, the module profile information of each power sensing module is sent simultaneously.

8. The method for monitoring power outage and restoration of a multi-user power collection terminal according to claim 5, characterized in that: In step S4, reporting the power outage and restoration status information includes: S41, the terminal perception terminal sends an event reporting request to the server through the uplink main communicator, and waits for the server to issue a query instruction; S42: The terminal sensing terminal receives the query instruction and sends the user power collection terminal file information and the corresponding power outage and restoration status information to the server; S43, waiting for a first predetermined time to receive a confirmation instruction sent by the server, if the confirmation instruction is received, automatically clearing the reported event information and executing step S44; otherwise, executing step S45; S44, the terminal sensing terminal determines whether there are other events to report, if so, executes step S41; if not, does not perform any operation; S45. The terminal perception terminal determines whether the number of failed reports for the same event exceeds a predetermined number. If so, the event is stored and waits for the next event report to be reported together; if not, step S41 is executed.

Images