CN115411837A - Power monitoring system - Google Patents

Power monitoring system Download PDF

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Publication number
CN115411837A
CN115411837A CN202110584621.9A CN202110584621A CN115411837A CN 115411837 A CN115411837 A CN 115411837A CN 202110584621 A CN202110584621 A CN 202110584621A CN 115411837 A CN115411837 A CN 115411837A
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CN
China
Prior art keywords
sensor
multifunctional
state parameters
monitoring
meter
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Pending
Application number
CN202110584621.9A
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Chinese (zh)
Inventor
王军
叶春晓
张宁
杨鹏
李牛牛
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Shanghai Electrical Apparatus Research Institute Group Co Ltd
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Shanghai Electrical Apparatus Research Institute Group Co Ltd
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Application filed by Shanghai Electrical Apparatus Research Institute Group Co Ltd filed Critical Shanghai Electrical Apparatus Research Institute Group Co Ltd
Priority to CN202110584621.9A priority Critical patent/CN115411837A/en
Publication of CN115411837A publication Critical patent/CN115411837A/en
Pending legal-status Critical Current

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/00002—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by monitoring
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/00001—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by the display of information or by user interaction, e.g. supervisory control and data acquisition systems [SCADA] or graphical user interfaces [GUI]
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
    • H02J13/00022—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using wireless data transmission
    • 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
    • Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
    • Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
    • Y04S40/126—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using wireless data transmission

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Human Computer Interaction (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)

Abstract

The application discloses a power monitoring system. The circuit comprises: the system comprises a plurality of sensors, a monitoring center and a multifunctional instrument, wherein each sensor is respectively arranged at a corresponding monitoring point and used for acquiring state parameters of the corresponding monitoring point and sending the state parameters to the multifunctional instrument; the multifunctional instrument is in wireless connection with each sensor and is used for receiving the state parameters sent by each sensor and sending the received state parameters to the monitoring processor; and the monitoring processor is in communication connection with the multifunctional instrument and is used for receiving the state parameters sent by the multifunctional instrument. According to this application embodiment, the state parameter that the multi-functional instrument can pass through wireless communication mode receiving sensor collection for data transmission's in-process avoids receiving other interfering signal's influence, promotes the transmission precision of monitoring data, can also save the cable cost, reduces the wiring mistake.

Description

Electric power monitoring system
Technical Field
The application belongs to the technical field of equipment monitoring, and particularly relates to an electric power monitoring system.
Background
The existing power monitoring system usually needs to collect various state parameters, such as electrical performance parameters, operation parameters, environmental parameters, and the like. In order to detect the data, various sensors are required to be arranged at monitoring points, the monitoring points are connected with the multifunctional instrument through cables, and the monitoring data are uploaded to a monitoring processor by the instrument after being sent to the multifunctional instrument.
At present, the number of the required sensors is correspondingly increased due to the variety of the data to be detected, and the number of the cables required when each sensor is connected with the multifunctional instrument and the workload consumed by wiring are gradually increased. When the wiring sets up, if the connection cable overlength that sets up, lead to the cable to receive more interference signal passively at the in-process of transmission monitoring data easily to lead to the monitoring data to receive interference signal's influence and take place the skew, reduce the precision of monitoring data.
Disclosure of Invention
The embodiment of the application provides an electric power monitoring system, which can solve the technical problem that the data precision is reduced because cable transmission data is influenced by interference signals.
In a first aspect, an embodiment of the present application provides an electric power monitoring system, where the system includes:
the system comprises a plurality of sensors, a monitoring center and a multifunctional instrument, wherein each sensor is respectively arranged at a corresponding monitoring point and used for acquiring state parameters of the corresponding monitoring point and sending the state parameters to the multifunctional instrument;
the multifunctional instrument is wirelessly connected with each sensor and is used for receiving the state parameters sent by each sensor and sending the received state parameters to the monitoring processor;
and the monitoring processor is in communication connection with the multifunctional instrument and is used for receiving the state parameters sent by the multifunctional instrument.
In some embodiments, the sensor comprises:
the monitoring end of the monitoring unit is arranged at the corresponding monitoring point and is used for acquiring and transmitting the state parameters of the corresponding monitoring point;
the first signal end of the first processing unit is connected with the output end of the monitoring unit, and is used for receiving the state parameters sent by the monitoring unit and transmitting the state parameters to the wireless communication unit;
and the wireless communication unit is in communication connection with the second signal end of the first processing unit, is in wireless connection with the multifunctional instrument, and is used for receiving the state parameters sent by the first processing unit and sending the state parameters to the multifunctional instrument.
In some embodiments, the monitoring unit comprises:
the monitors are arranged at corresponding monitoring points and are used for acquiring state parameters;
the signal processing subunit is connected with the monitor and is used for processing the state parameters acquired by the monitor;
and the input end of the analog-to-digital conversion subunit is connected with the signal processing subunit, and the output end of the analog-to-digital conversion subunit is connected with the first signal end of the first processing unit, and is used for performing analog-to-digital conversion on the state parameters after signal processing and sending the state parameters to the first processing unit.
In some embodiments, a multifunction meter includes:
the downlink communication unit is connected with the wireless communication unit of each sensor, is used for receiving the state parameters sent by each wireless communication unit, and sends the state parameters to the second processing unit;
the first signal end of the second processing unit is connected with the downlink communication unit and used for receiving the state parameters sent by the downlink communication unit and sending the state parameters to the uplink communication unit;
and the uplink communication unit is connected with the second signal end of the second processing unit, is in communication connection with the monitoring processor, and is used for receiving the state parameters sent by the second processing unit and sending the state parameters to the monitoring processor.
In some embodiments, the multifunctional instrument further comprises a power supply module, an input end of the power supply module is connected with an external voltage source, and a plurality of power supply ends of the power supply module are respectively connected with the second processing unit, the downlink communication unit and the uplink communication unit;
and the power supply module is used for converting the received external voltage into corresponding power supply voltage and respectively supplying power to the second processing unit, the downlink communication unit and the uplink communication unit.
In some embodiments, the multifunction meter has a pre-stored device record list that includes a device identification for each sensor;
the multifunctional instrument is used for adding the equipment identifier of each sensor into an equipment record list when each sensor is in first communication connection with the multifunctional instrument;
the multifunctional instrument is specifically used for inquiring the online state of the corresponding sensor according to the device identifier in the device record list when the multifunctional instrument is started, generating a device online list according to the online state of each sensor, and polling and reading the state parameters of the monitoring points acquired by each sensor in the device online list.
In some embodiments, the multifunction meter further comprises:
the display module is used for visually displaying the corresponding relation between the multifunctional instrument and the sensors;
and the multifunctional meter is also used for determining a target sensor according to configuration operation triggered by a user and adding, deleting, inquiring or modifying the corresponding relation between the target sensor and the multifunctional meter in the equipment record list.
In some embodiments, the power monitoring system further comprises:
the configuration terminal is in communication connection with the multifunctional instrument and used for generating a corresponding configuration management instruction when a user triggers configuration operation and sending the configuration management instruction to the multifunctional instrument;
the multifunctional meter is specifically used for determining a target sensor according to the configuration management instruction, and adding, deleting, inquiring or modifying the corresponding relation between the target sensor and the multifunctional meter in the equipment record list.
In some embodiments, configuring the terminal further comprises:
the camera module is used for shooting and identifying the equipment identification code on the target sensor when a user triggers configuration operation so as to identify the equipment information of the target sensor;
the configuration terminal is used for sending the equipment information of the target sensor and the configuration management instruction to the multifunctional instrument;
and the multifunctional instrument is used for determining the target sensor according to the equipment information of the target sensor and adding, deleting, inquiring or modifying the corresponding relation between the target sensor and the multifunctional instrument according to the configuration management instruction.
In some embodiments, the multifunctional meter is configured to, when receiving a network access request, perform request authentication on a corresponding sensor according to the network access request, and wirelessly connect with the corresponding sensor after the authentication is passed.
In some embodiments, the sensor is configured to receive a network quitting instruction sent by the multifunctional meter, and disconnect from the multifunctional meter when receiving a network quitting request sent by the multifunctional meter broadcast within a preset network quitting duration.
In some embodiments, the status parameters include one or more of electrical performance parameters, operational parameters, and environmental parameters.
In some embodiments, the multifunction meter is communicatively coupled to each sensor in a mesh topology.
Compared with the prior art, the electric power monitoring system provided by the embodiment of the application can enable each sensor to monitor various state parameters of the corresponding monitoring point nearby by respectively arranging the plurality of sensors at different monitoring points, and realize distributed detection on monitoring data. Set up every sensor and all carry out wireless connection with multi-functional instrument, can reduce the wired connection between sensor and the multi-functional instrument, reduce the wiring length and the complexity of wired cable, save the cable cost, reduce the probability that the staff of working a telephone switchboard takes place the wiring mistake when working a telephone switchboard. Simultaneously, the mode that adopts wireless connection compares in wired cable connection can also make data transmission's in-process avoid receiving the influence of other interference signal, promotes the transmission precision of monitoring data.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments of the present application will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a power monitoring system according to an embodiment of the present disclosure;
FIG. 2 is a schematic diagram of a sensor 10 according to an embodiment of the present application;
fig. 3 is a schematic structural diagram of the monitoring unit 11 according to an embodiment of the present application;
FIG. 4 is a schematic diagram of a sensor 10 according to another embodiment of the present application;
FIG. 5 is a schematic diagram of a multifunctional meter 20 according to an embodiment of the present application;
fig. 6 is a schematic structural diagram of a power monitoring system according to another embodiment of the present application.
Description of the drawings: 10. a sensor; 20. a multifunctional instrument; 30. a monitoring processor; 11. a monitoring unit; 111. a monitor; 1111. a current detection transformer; 1112. a voltage input interface; 112. a signal processing subunit; 1121. a current signal processing circuit; 1122. a three-phase voltage signal processing circuit; 113. an analog-to-digital conversion subunit; 12. a first processing unit; 13. a wireless communication unit; 14. a second power supply module; 15. a power supply interface; 21. a downlink communication unit; 22. a second processing unit; 23. an uplink communication unit; 24. a power supply module; 25. an external voltage source; 26. a display module; 40. configuring a terminal; 41. and a camera module.
Detailed Description
Features and exemplary embodiments of various aspects of the present application will be described in detail below, and in order to make objects, technical solutions and advantages of the present application more apparent, the present application will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of, and not restrictive on, the present application. It will be apparent to one skilled in the art that the present application may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the present application by illustrating examples thereof.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrases "comprising 8230; \8230;" comprise 8230; "do not exclude the presence of additional identical elements in any process, method, article, or apparatus that comprises the element.
It should be noted that, in the present application, the embodiments and features of the embodiments may be combined with each other without conflict. The embodiments will be described in detail below with reference to the accompanying drawings.
The applicant has noted that, in the existing power monitoring system, a large number of sensors are usually required to collect various state parameters, such as parameters, operation parameters, environmental parameters, and the like, so as to implement the state monitoring of the power system. However, when the sensors are connected to the meter, the number of cables required for connection increases as the number of sensors increases, and the amount of wiring work increases. In a large number of complicated wiring works, a problem of wiring errors is likely to occur. If found and corrected in the subsequent checking stage, only the wiring efficiency is influenced; if the error does not occur in the subsequent inspection stage, the monitoring function of the state parameter may not be realized, and even the sensor and the meter are easily damaged due to abnormal current or voltage during operation. In addition, the sensor transmits data with the instrument through the wired cable, the transmitted data are analog signals, and the transmitted analog signals are distorted due to the fact that the sensor is easily influenced by various external interference signals in the process of transmitting data through the wired cable, so that state parameters received by the instrument are inaccurate, and the accuracy of data monitoring is reduced.
In order to solve the above technical problems discovered by the applicant, embodiments of the present application provide a power monitoring system. The following describes a power monitoring system provided in an embodiment of the present application.
Referring to fig. 1, fig. 1 illustrates a power monitoring system according to an embodiment of the present application. The system comprises:
each sensor 10 is respectively arranged at a corresponding monitoring point and is used for acquiring the state parameters of the corresponding monitoring point and sending the state parameters to the multifunctional instrument 20;
the multifunctional meter 20 is wirelessly connected with each sensor 10 and is used for receiving the state parameters sent by each sensor 10 and sending the received state parameters to the monitoring processor 30;
and the monitoring processor 30 is in communication connection with the multifunctional meter 20 and is used for receiving the state parameters sent by the multifunctional meter 20.
The power monitoring system includes a sensor 10, a multifunction meter 20, and a monitoring processor 30. In an area needing power monitoring, each sensor 10 may be respectively disposed in a corresponding monitoring point, collect a state parameter of the monitoring point, and send the collected state parameter to the multifunctional meter 20 wirelessly connected to the sensor 10. The monitoring points can be all power distribution cabinets in the power distribution network, and the sensors 10 arranged in the power distribution cabinets can be used for detecting various state parameters of the power distribution cabinets in the running state, such as electrical property parameters, running parameters, environmental parameters and the like. For example, the electrical performance parameters may include current, voltage, power, frequency, etc. at the monitoring point, the operational parameters may include switching status, mode status, etc. of various devices, modules, etc. at the monitoring point, and the environmental parameters may include temperature, humidity, etc. at the monitoring point. The multifunctional meter 20 can receive the status parameters sent by the sensors 10 through wireless transmission and send the status parameters to the monitoring processor 30, so that the monitoring processor 30 can monitor and process the power system according to the received status parameters.
The sensor 10 may be a current sensor 10 or a voltage sensor 10, or may be another sensor 10 for detecting an electrical property parameter, or may be a sensor 10 capable of detecting a plurality of status parameters simultaneously.
The multifunctional meter 20 can be wirelessly connected with a plurality of sensors 10 at the same time and acquire status parameters of a plurality of monitoring points. It can be understood that, according to the corresponding position of the installed sensor 10, the installation position of the multifunctional meter 20 can be adjusted, so that the multifunctional meter 20 is close to the central position of the sensor 10 network composed of a plurality of sensors 10, thereby avoiding that the multifunctional meter 20 is too far away from some sensors 10 to cause insufficient wireless connection signal strength and cannot receive the status parameters sent by the sensors 10.
The monitoring processor 30 may be a server provided at a remote end, or may be an upper computer or other monitoring processing device connected to the multifunction meter 20. The connection of the multifunction meter 20 to the monitoring processor 30 may be a wireless connection or a wired connection.
By respectively arranging the plurality of sensors 10 at different monitoring points, each sensor 10 can monitor various state parameters of the corresponding monitoring point nearby, and distributed detection of monitoring data is realized. Set up every sensor 10 and all carry out wireless connection with multi-functional instrument 20, can reduce the wired connection between sensor 10 and the multi-functional instrument 20, reduce the wiring length and the complexity of wired cable, save the cable cost, reduce the probability that the staff of working a telephone switchboard takes place the wiring error when carrying out the wiring. Meanwhile, compared with a wired cable connection mode, the wireless connection mode can also avoid the influence of other interference signals in the data transmission process, and the transmission precision of the monitoring data is improved.
Referring to fig. 2, in some embodiments, the sensor 10 may include:
the monitoring end of the monitoring unit 11 is arranged at the corresponding monitoring point and is used for acquiring and transmitting the state parameters of the corresponding monitoring point;
a first signal end of the first processing unit 12 is connected with an output end of the monitoring unit 11, and is configured to receive the state parameter sent by the monitoring unit 11 and transmit the state parameter to the wireless communication unit 13;
and the wireless communication unit 13 is in communication connection with the second signal end of the first processing unit 12, is in wireless connection with the multifunctional meter 20, and is used for receiving the state parameters sent by the first processing unit 12 and sending the state parameters to the multifunctional meter 20.
The monitoring end of the monitoring unit 11 may be disposed in the corresponding monitoring point to collect the status parameters of the monitoring point and send the status parameters to the first processing unit 12. The first processing unit 12 can receive the status parameters sent by the monitoring unit 11, send the status parameters to the multifunctional meter 20 through the wireless communication unit 13, and send the status parameters in a wireless connection manner, so that the connection between the sensor 10 and the multifunctional meter through a wired cable can be avoided, and the multifunctional meter 20 does not have a cable interface connected with the sensor 10, thereby reducing the number of wired interfaces required by the multifunctional meter 20.
The first processing unit 12 may be an embedded processor, and the embedded processor may have a wireless data transceiving function, that is, the embedded processor includes a wireless communication unit 13, and implements wireless data transceiving through an external antenna; the embedded processing may also be a processing that does not have a wireless data transceiving function by itself, but can realize wireless data transceiving by connecting with the wireless communication unit 13, and the wireless communication unit 13 may be a wireless transceiving chip.
Referring to fig. 3 to 4, in some embodiments, the monitoring unit 11 may include:
the monitor 111 is arranged at a corresponding monitoring point and used for acquiring state parameters;
the signal processing subunit 112 is connected to the monitor 111, and is configured to perform signal processing on the state parameters acquired by the monitor 111;
an analog-to-digital conversion subunit 113, an input end of the analog-to-digital conversion subunit 113 is connected to the signal processing subunit 112, and an output end is connected to the first signal end of the first processing unit 12, and is configured to perform analog-to-digital conversion on the state parameter after the signal processing, and send the state parameter to the first processing unit 12.
The monitor 111 may be a device for monitoring various state parameters, such as the current detection transformer 1111, the voltage input interface 1112, the temperature and humidity sensor 10, and the like, and the monitor 111 may collect the state parameters of the corresponding monitoring point and send the collected state parameters to the signal processing subunit 112.
The signal processing subunit 112 may perform signal processing on the status parameter sent by the monitor 111, and then send the status parameter to the analog-to-digital conversion subunit 113 for analog-to-digital conversion. For example, when the monitor 111 is used to monitor a current parameter of a monitoring point, the signal processing subunit 112 may be a current signal processing circuit 1121, and the current parameter sent by the monitor 111 may be subjected to filtering processing and amplitude adjustment by the current signal processing circuit 1121, and send a processed current analog signal to the analog-to-digital conversion subunit 113 to be converted into a current digital signal. Similarly, if the monitor 111 is used to monitor the voltage parameter, the signal processing subunit 112 may be a three-phase voltage signal processing circuit 1122, and performs voltage reduction processing on the voltage parameter to send the voltage analog signal after voltage reduction to the analog-to-digital converting subunit 113 to be converted into a voltage digital signal.
The analog-to-digital conversion subunit 113, after performing analog-to-digital conversion on the received analog signal to generate a corresponding digital signal, may send the digital signal to the first processing unit 12, so as to send the digital signal to the multifunctional meter 20 in a wireless transmission manner. The existing data transmission mode is generally a state parameter of a wired cable for transmitting an analog signal, and the analog signal is easily affected by an external interference signal to generate distortion of a signal waveform in a transmission process, so that data received by an instrument is inaccurate. The analog-to-digital conversion of the state parameters is performed by the analog-to-digital conversion subunit 113, the generated digital signals are sent to the multifunctional instrument 20 through the wireless communication unit 13, the sampled state parameters can be converted into digital signals by analog signals, and then the digital signals are sent to the multifunctional instrument 20 through a wireless communication mode.
Referring to fig. 5, in some embodiments, the multifunction meter 20 may include:
the downlink communication unit 21, the downlink communication unit 21 is connected with the wireless communication unit 13 of each sensor 10, and is used for receiving the status parameters sent by each wireless communication unit 13 and sending the status parameters to the second processing unit 22;
a second processing unit 22, a first signal end of the second processing unit 22 is connected to the downlink communication unit 21, and is configured to receive the status parameter sent by the downlink communication unit 21 and send the status parameter to the uplink communication unit 23;
the uplink communication unit 23 is connected to the second signal end of the second processing unit 22, and is in communication connection with the monitoring processor 30, and is configured to receive the status parameter sent by the second processing unit 22, and send the status parameter to the monitoring processor 30.
The downlink communication unit 21 may be wirelessly connected with the wireless communication units 13 of the plurality of sensors 10 to receive the status parameters transmitted by the respective sensors 10 and transmit to the second processing unit 22. The second processing unit 22 may send the received status parameters to the upper communication unit 23. The uplink communication unit 23 can be in communication with the monitoring processor 30 to transmit the status parameters sent by the second processing unit 22 to the monitoring processor 30.
The data transmission and reception method of the downlink communication unit 21 is wireless transmission, and the downlink communication unit 21 is provided with an antenna, and can transmit and receive signals to and from the wireless communication unit 13 of the sensor 10 via the antenna. For example, the downlink communication unit 21 may be a Zigbee communication module or a bluetooth module, such as a REX3t Zigbee/bluetooth dual communication module. The data transmission and reception method of the uplink communication unit 23 may be wired transmission or wireless transmission. For example, the uplink communication unit 23 may be a wired communication 485 module.
The second processing unit 22 may be an embedded processor, such as a STM32G070RBT type processor chip. A temperature and humidity sensor (not shown) may be further disposed in the multifunctional meter 20, and connected to the second processing unit 22, and the second processing unit 22 receives temperature and humidity data sent by the temperature and humidity sensor 10, so as to monitor environmental parameters such as temperature and humidity.
In some embodiments, the multifunctional meter 20 may further include a power module 24, an input end of the power module 24 is connected to an external voltage source 25, and a plurality of power supply ends of the power module 24 are respectively connected to the second processing unit 22, the downlink communication unit 21, and the uplink communication unit 23.
The power module 24 may receive a corresponding external voltage from the external voltage source 25, convert the received external voltage into power supply voltages corresponding to the second processing unit 22, the downlink communication unit 21, and the uplink communication unit 23, and supply power to the second processing unit 22, the downlink communication unit 21, and the uplink communication unit 23.
In some embodiments, the sensor 10 may further include a second power module 14, and the first processing unit 12 and other units or modules of the sensor 10 are powered by the second power module 14. For example, when the sensor 10 can detect a voltage parameter of a monitoring point, the second power module 14 may be connected to the voltage input interface 1112, and perform voltage conversion on the output voltage of the monitoring point and then send the converted output voltage to the first processing unit 12 through the power supply interface 15. The voltage input interface 1112 may be a three-phase voltage input interface. When the state parameters acquired by the sensor 10 include a voltage parameter, a voltage input may also be obtained from the monitoring point through the second power module 14, and the voltage input is converted into a corresponding power supply voltage to supply power to other modules or units of the sensor 10, so as to implement external continuous power supply of the sensor 10 and prolong the service life of the sensor 10.
In some embodiments, the multifunction meter 20 has a device record list pre-stored therein, and the device record list includes the device identifier of each sensor 10. When the sensor 10 is not communicatively connected to the multifunction meter 20, the device identification of the sensor 10 is not recorded in the device record list of the multifunction meter 20. When the sensor 10 is in communication connection with the multifunctional meter for the first time, the multifunctional meter 20 may acquire the device identifier of the sensor 10 and add the device identifier to the device record list for list update.
When the multifunctional meter 20 is started each time, the online state query of the sensor 10 corresponding to the device identifier may be performed according to a plurality of device identifiers in the device record list, and after the online state of each sensor 10 is determined, a device online list is created according to all online sensors 10. The multifunction meter 20 may perform polling reading on each sensor 10 in the device online list after generating the device online list to obtain the status parameters of the monitoring points collected by each sensor 10. The state parameters may be electrical parameters such as current, voltage, power, frequency, etc.
After the multifunctional meter 20 performs polling reading on all the sensors 10 in the device online list each time, if some sensors 10 cannot communicate with the multifunctional meter 20, that is, if the multifunctional meter 20 cannot acquire the status parameters of the sensors 10, the multifunctional meter 20 may perform online status query on the sensors 10 that cannot normally communicate before next polling reading, and if the query determines that the sensors 10 are not in a linear status, delete the corresponding device identifiers in the device online list according to the sensors 10. After the status of the sensor 10 which fails to communicate normally in the last polling is updated, the multifunctional meter 20 may perform the next polling reading operation according to the updated device online list. By maintaining and updating the device online list, the multifunctional meter 20 can quickly determine the online sensor 10, and poll and acquire the state parameters acquired by the online sensor 10, so that the acquisition efficiency of the state parameters is improved, and when the state parameters of the monitoring point are abnormal, the monitoring processor 30 can quickly receive the state parameters and perform corresponding operation processing.
In a polling period in which the multifunctional meter 20 acquires the status parameters acquired by the sensors 10, the multifunctional meter 20 firstly queries the online status of each sensor 10 according to the device record list, and sets a corresponding offline identifier for the sensor 10 that is not online, and it can be understood that the sensor 10 that is not set with the offline identifier is the corresponding online device in the device online list. For on-line sensors 10, the multifunction meter first determines whether to read the configuration information and sensor parameters of each sensor 10, and may first read the configuration information and parameters of the sensor 10 when they are not acquired. When the relevant configuration information and parameters of all the sensors 10 have been acquired, the status parameters acquired by each sensor 10 can be read in a polling manner. After reading the state parameters collected by all the on-line sensors 10, if the multifunctional meter needs to perform configuration management on the sensors 10, a target sensor can be determined, corresponding configuration data is sent to the target sensor, and the target sensor stores the received configuration data, so that parameter configuration can be realized.
In the above embodiment, the multifunctional meter 20 reads the configuration information and parameters of the sensors 10, may determine the number of the sensors 10 and perform numbering, set the initial reading number INDEX to be 1, read the configuration information of the sensor 10 with the number INDEX, add 1 to the INDEX after reading is completed, and continue to read the configuration information of the sensor 10 with the number INDEX until the configuration information of all the sensors 10 is completely read.
Similarly, after the multifunctional meter reads the configuration information and parameters of all the sensors 10, the same serial number sequence may be adopted, and the status parameters collected by the sensors 10 corresponding to each serial number may be read in sequence.
The multifunctional meter 20 implements configuration management of the target sensors, and may also be configured to number the number of the sensors 10, determine the sensor 10 with the number of INDEX as the target sensor, and send a configuration instruction containing configuration data to the target sensor, and after receiving the configuration instruction, the target sensor may store the received configuration data to implement parameter configuration.
In some embodiments, the multifunction meter 20 may further include a display module 26, and the display module 26 may visually display the correspondence between the multifunction meter 20 and the plurality of sensors 10.
When the multifunctional meter 20 is visually displayed through the display module 26, the user can also perform configuration management on the corresponding relationship between the multifunctional meter 20 and the sensor 10 through the interface of the multifunctional meter 20. In the corresponding configuration management interface, the user may determine the target sensor by triggering the corresponding configuration operation, so that the multifunctional meter 20 adds, deletes, queries, or modifies the corresponding relationship between the target sensor and the multifunctional meter 20 in the device record list. For example, the display module 26 may be provided with a key for configuration management, and when a target sensor is not communicatively connected to the multifunction meter 20, the user may cause the multifunction meter 20 to determine wireless configuration information of the target sensor and wirelessly communicatively connect with the target sensor by triggering a key addition operation of the display module 26. The user can also realize the functions of disconnecting the multifunctional meter 20 from the target sensor, inquiring or modifying the relevant parameters of the target sensor and the like through configuration operation.
It can be understood that each sensor 10 has device ID information with unique identification, and the multifunctional meter 20 can determine the corresponding sensor 10 to perform data communication according to the device ID information, and can also determine the sensor 10 transmitting data according to the device ID information in the data when receiving the data transmitted by the sensor 10, and realize the analysis of the data information. It will be appreciated that the multifunction meter 20, upon startup, may determine the number of sensors 10 that are online and sort by number, reading the configuration information of each online sensor 10 in the order of the number, thereby determining the device ID information for each sensor 10. When the multifunctional meter 20 needs to modify the configuration information of a certain sensor 10, it may also determine the device ID information according to the serial number of the sensor, and send new configuration information and a configuration modification instruction to the sensor, so that the sensor 10 stores the received new configuration information to implement configuration modification.
Referring to fig. 6, in some embodiments, the power monitoring system may further include a configuration terminal 40, and the configuration terminal 40 may be communicatively connected to the multifunctional meter 20 in a manner of bluetooth, zigBee (ZigBee) ZigBee (Long Range Radio), NB-IoT (Narrow Band Internet of Things) or Wi-Fi (wireless fidelity). The user may generate configuration management instructions on the configuration terminal 40 by triggering corresponding configuration operations and send the configuration management instructions to the multifunction meter 20. The multifunction meter 20 may determine a target sensor specified by the user according to the configuration management instruction, and add, delete, query, or modify a correspondence relationship between the target sensor and the multifunction meter 20 in the device record list.
The configuration terminal 40 may further include a camera module 41, when a user triggers a configuration operation in an application program of the configuration terminal 40, the configuration terminal 40 may turn on the camera module 41, and the user may move the configuration terminal 40 to enable the camera module 41 to perform shooting recognition on the device identification code on the object sensor. Each target sensor is preset with a unique corresponding equipment identification code of the target sensor, and the equipment identification code can be a bar code, a two-dimensional code or other identification marks.
After the configuration terminal 40 identifies the device information of the target sensor according to the captured device identification code, the device information of the target sensor and a configuration management instruction corresponding to a configuration operation triggered by a user may be sent to the multifunctional meter 20. The multifunctional meter 20 may determine the target sensor through the device information of the target sensor, and add, delete, query, or modify the corresponding relationship between the target sensor and the multifunctional meter 20 according to the configuration management instruction.
The multifunctional instrument 20 can be in communication connection with an upper computer, and a user can add, delete, inquire or modify the corresponding relation between the target sensor and the multifunctional instrument 20 through a configuration interface of the upper computer.
The multifunctional meter 20 can record the wireless communication state when communicating with the sensor 10, and process the network abnormal condition occurring in the wireless data communication. When the wireless communication between the multifunctional meter 20 and a certain sensor 10 or the configuration terminal 40 fails to respond, the multifunctional meter 20 may perform retransmission processing on the data to avoid the data loss problem. When the sensor 10 cannot normally communicate due to non-electrification or other reasons, the multifunctional meter 20 may determine that the sensor 10 is in an offline state after abnormal communication for a plurality of times, detect the online state of the sensor 10 at preset intervals, and resume normal wireless communication with the sensor 10 after it is determined that the sensor 10 is online.
Before the multifunctional meter 20 and the sensor 10 start to communicate, the use condition of the wireless channel can be detected, and if the wireless channel is occupied, the self channel and the channel of the sensor 10 connected with the multifunctional meter 20 can be switched to an idle channel, so that the normal communication between the multifunctional meter 20 and the sensor 10 is ensured.
In some embodiments, the sensor 10, upon activation, may enter a request-to-network state in which it requests networking from other wireless devices within communication range if it is not wirelessly connected to the multifunction meter 20. The multifunction meter 20 may connect with the sensor 10 to allow the sensor 10 to enter a network upon detecting that the sensor 10 is in a network entry requesting state. The sensor 10 may send a network access request to the multifunctional meter 20 after the multifunctional meter 20 allows network access, where the network access request may further include a key verification request, and the multifunctional meter 20 may realize wireless connection with the sensor 10 after passing the key verification of the sensor 10. It will be appreciated that after the sensors 10 are wirelessly connected to the multifunctional meter 20, the sensors 10 can also assist in the process of wirelessly connecting the multifunctional meter 20 to other unconnected sensors 10 to improve the efficiency of the wireless connection of the multifunctional meter 20 to multiple sensors 10. For example, the multifunction meter 20 may assist the multifunction meter 20 in performing key verification of other sensors 10 after detecting that other sensors 10 are in a network entry request state, so as to improve the wireless connection rate.
In the existing wireless device connection scheme, batch logout is an important function for ending the connection between the wireless devices. When a plurality of wireless devices leave the network in batch, the following phenomena are easy to occur: after receiving the network quitting instruction, a certain wireless device quits the wireless connection network, but because the wireless network comprises a plurality of nodes, the link of the whole network is changed due to the network quitting of the wireless device, and after the wireless device quits the network, other wireless devices cannot receive the network quitting instruction due to the link change, so that the batch network quitting failure is caused.
In some embodiments, in order to solve the above-mentioned network exit failure problem, each sensor 10, after receiving the network exit command sent by the multifunctional meter 20, does not directly perform network exit, but starts network exit timing. After the multifunctional meter 20 sequentially sends the network quitting instructions to all the sensors 10 which need to quit the network, the multifunctional meter can send broadcast signals to all the sensors 10, and when receiving the network quitting instructions and starting to quit the network, the sensors 10 can start to quit the network when receiving the broadcast signals, so that the situation that certain wireless equipment quits the network, link changes are caused, and other wireless equipment cannot receive the network quitting instructions is avoided. The sensor 10 also stores a preset network quitting time in advance, and when the timing time does not reach the preset network quitting time, if a broadcast signal is received, the sensor 10 can immediately quit the network and is disconnected with the multifunctional instrument 20; when the timing duration reaches the preset network quitting duration, the network quitting can be directly carried out even if the broadcast signal is not received.
In some embodiments, a high-performance metering chip, such as an HT7036 type metering chip, may be used in the sensor 10, the sensor 10 may collect the electrical performance parameters according to a preset interval period based on a preset collection task mechanism, and an interrupt alarm mechanism is further provided during the collection process, and when it is detected that the electrical performance parameters are abnormal, such as an overcurrent or an undervoltage, an alarm prompt may be issued to prompt a worker or a user to handle the abnormality in time.
The sensor 10 may implement zero calibration and coefficient calibration when acquiring electrical performance parameters. When the sensor 10 is supplied with power internally and has no voltage or current externally, the sensor 10 can acquire a voltage value or a current value, and after a voltage mean value or a current mean value is obtained through calculation, the voltage mean value or the current mean value can be written into a metering chip as a calibration value, so that zero calibration is completed. The sensor 10 may also be connected to an external standard source, receive a standard voltage, a current, and a power factor input from the outside, correct the voltage, the current, and the power gain, correct a series of parameters such as a power phase, a power period, and the like according to the parameters, and write the corrected parameters obtained by calculation after correction into a metering chip to calibrate the coefficients.
It should be noted that the multifunctional meter 20 may use modbus protocol to read and collect data of multiple sensors 10. Different data bit sections are allocated to different sensors 10 in the multifunctional meter 20, and data sent by the sensors 10 can be read through a modbus instruction and stored in the corresponding bit sections, so that data reading of the sensors 10 is realized.
In some embodiments, the multifunction meter 20 and each sensor 10 may be communicatively coupled in a mesh topology. When there is a sensor 10 that is abnormal and disconnected from the multifunctional meter 20, other sensors 10 around the sensor 10 can repair the link additionally, and the multifunctional meter 20 can be reconnected with the sensor 10 through other sensors 10 to acquire the state parameters, thereby improving the stability of wireless communication.
It is to be understood that the present application is not limited to the particular arrangements and instrumentality described above and shown in the attached drawings. A detailed description of known methods is omitted herein for the sake of brevity. In the above embodiments, several specific steps are described and shown as examples. However, the method processes of the present application are not limited to the specific steps described and illustrated, and those skilled in the art can make various changes, modifications and additions, or change the order between the steps, after comprehending the spirit of the present application.
The functional blocks shown in the above-described structural block diagrams may be implemented as hardware, software, firmware, or a combination thereof. When implemented in hardware, it may be, for example, an electronic circuit, an Application Specific Integrated Circuit (ASIC), suitable firmware, plug-in, function card, or the like. When implemented in software, the elements of the present application are the programs or code segments used to perform the required tasks. The program or code segments may be stored in a machine-readable medium or transmitted by a data signal carried in a carrier wave over a transmission medium or a communication link. A "machine-readable medium" may include any medium that can store or transfer information. Examples of a machine-readable medium include electronic circuits, semiconductor memory devices, ROM, flash memory, erasable ROM (EROM), floppy disks, CD-ROMs, optical disks, hard disks, fiber optic media, radio Frequency (RF) links, and so forth. The code segments may be downloaded via computer networks such as the internet, intranet, etc.
It should also be noted that the exemplary embodiments mentioned in this application describe some methods or systems based on a series of steps or devices. However, the present application is not limited to the order of the above-described steps, that is, the steps may be performed in the order mentioned in the embodiments, may be performed in an order different from the order in the embodiments, or may be performed simultaneously.
Aspects of the present disclosure are described above with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the disclosure. It will be understood that each block of the flowchart illustrations and/or block diagrams, and combinations of blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, enable the implementation of the functions/acts specified in the flowchart and/or block diagram block or blocks. Such a processor may be, but is not limited to, a general purpose processor, a special purpose processor, an application specific processor, or a field programmable logic circuit. It will also be understood that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware for performing the specified functions or acts, or combinations of special purpose hardware and computer instructions.
As described above, only the specific embodiments of the present application are provided, and it can be clearly understood by those skilled in the art that, for convenience and brevity of description, the specific working processes of the system, the module and the unit described above may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again. It should be understood that the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive various equivalent modifications or substitutions within the technical scope of the present application, and these modifications or substitutions should be covered within the scope of the present application.

Claims (13)

1. A power monitoring system, comprising:
the system comprises a plurality of sensors, a monitoring center and a multifunctional instrument, wherein each sensor is respectively arranged at a corresponding monitoring point and used for acquiring state parameters of the corresponding monitoring point and sending the state parameters to the multifunctional instrument;
the multifunctional instrument is wirelessly connected with each sensor and is used for receiving the state parameters sent by each sensor and sending the received state parameters to the monitoring processor;
and the monitoring processor is in communication connection with the multifunctional instrument and is used for receiving the state parameters sent by the multifunctional instrument.
2. The power monitoring system of claim 1, wherein the sensor comprises:
the monitoring end of the monitoring unit is arranged at the corresponding monitoring point and is used for acquiring and transmitting the state parameters of the corresponding monitoring point;
the first signal end of the first processing unit is connected with the output end of the monitoring unit, and is used for receiving the state parameters sent by the monitoring unit and transmitting the state parameters to the wireless communication unit;
the wireless communication unit is in communication connection with the second signal end of the first processing unit, is in wireless connection with the multifunctional instrument, and is used for receiving the state parameters sent by the first processing unit and sending the state parameters to the multifunctional instrument.
3. The power monitoring system of claim 2, wherein the monitoring unit comprises:
the monitor is arranged at the corresponding monitoring point and is used for acquiring the state parameters;
the signal processing subunit is connected with the monitor and is used for processing the state parameters acquired by the monitor;
and the input end of the analog-to-digital conversion subunit is connected with the signal processing subunit, and the output end of the analog-to-digital conversion subunit is connected with the first signal end of the first processing unit, and is used for performing analog-to-digital conversion on the state parameters after signal processing and sending the state parameters to the first processing unit.
4. The power monitoring system of claim 2, wherein the multifunction meter comprises:
the downlink communication unit is connected with the wireless communication unit of each sensor, and is used for receiving the state parameters sent by each wireless communication unit and sending the state parameters to the second processing unit;
the first signal end of the second processing unit is connected to the downlink communication unit, and is configured to receive the state parameter sent by the downlink communication unit and send the state parameter to the uplink communication unit;
the uplink communication unit is connected with the second signal end of the second processing unit, is in communication connection with the monitoring processor, and is used for receiving the state parameters sent by the second processing unit and sending the state parameters to the monitoring processor.
5. The power monitoring system of claim 4, wherein the multifunctional meter further comprises a power module, an input end of the power module is connected with an external voltage source, and a plurality of power supply ends of the power module are respectively connected with the second processing unit, the downlink communication unit and the uplink communication unit;
the power module is configured to convert the received external voltage into a corresponding power supply voltage, and respectively supply power to the second processing unit, the downlink communication unit, and the uplink communication unit.
6. The power monitoring system according to any one of claims 1 to 5, wherein the multifunctional meter stores in advance a device record list including a device identification of each of the sensors;
the multifunctional meter is used for adding the equipment identifier of each sensor into the equipment record list when each sensor is in first communication connection with the multifunctional meter;
the multifunctional meter is specifically configured to perform online status query on corresponding sensors according to the device identifiers in the device record list when the multifunctional meter is started, generate a device online list according to the online status of each sensor, and poll and read status parameters of monitoring points acquired by each sensor in the device online list.
7. The power monitoring system of claim 6, wherein the multifunction meter further comprises:
the display module is used for visually displaying the corresponding relation between the multifunctional instrument and the plurality of sensors;
the multifunctional instrument is also used for determining a target sensor according to configuration operation triggered by a user, and adding, deleting, inquiring or modifying the corresponding relation between the target sensor and the multifunctional instrument in an equipment record list.
8. The power monitoring system of claim 7, further comprising:
the configuration terminal is in communication connection with the multifunctional instrument and is used for generating a corresponding configuration management instruction when a user triggers configuration operation and sending the configuration management instruction to the multifunctional instrument;
the multifunctional meter is specifically configured to determine a target sensor according to the configuration management instruction, and add, delete, query, or modify a correspondence between the target sensor and the multifunctional meter in an equipment record list.
9. The power monitoring system of claim 8, wherein the configuration terminal further comprises:
the camera module is used for shooting and identifying the equipment identification code on the target sensor when a user triggers configuration operation so as to identify the equipment information of the target sensor;
the configuration terminal is used for sending the equipment information of the target sensor and the configuration management instruction to the multifunctional instrument;
and the multifunctional instrument is used for determining a target sensor according to the equipment information of the target sensor and adding, deleting, inquiring or modifying the corresponding relation between the target sensor and the multifunctional instrument according to the configuration management instruction.
10. The power monitoring system according to any one of claims 1 to 5 and 7 to 9, wherein the multifunctional meter is configured to perform request verification on the corresponding sensor according to the network access request when the network access request is received, and to wirelessly connect with the corresponding sensor after the verification is passed.
11. The power monitoring system according to any one of claims 1 to 5 and 7 to 9, wherein the sensor is configured to receive a network quitting instruction sent by the multifunctional meter, and disconnect the multifunctional meter when receiving a network quitting request sent by the multifunctional meter broadcast within a preset network quitting duration.
12. The power monitoring system of any one of claims 1-5, 7-9, wherein the status parameters include one or more of electrical performance parameters, operational parameters, and environmental parameters.
13. The power monitoring system of any one of claims 1-5 and 7-9, wherein the multifunctional meter is communicatively coupled to each of the sensors in a mesh topology.
CN202110584621.9A 2021-05-27 2021-05-27 Power monitoring system Pending CN115411837A (en)

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Application Number Priority Date Filing Date Title
CN202110584621.9A CN115411837A (en) 2021-05-27 2021-05-27 Power monitoring system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110584621.9A CN115411837A (en) 2021-05-27 2021-05-27 Power monitoring system

Publications (1)

Publication Number Publication Date
CN115411837A true CN115411837A (en) 2022-11-29

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