CN111510360A - Remote multi-channel signal comprehensive acquisition system for electrical facilities - Google Patents

Remote multi-channel signal comprehensive acquisition system for electrical facilities Download PDF

Info

Publication number
CN111510360A
CN111510360A CN202010282055.1A CN202010282055A CN111510360A CN 111510360 A CN111510360 A CN 111510360A CN 202010282055 A CN202010282055 A CN 202010282055A CN 111510360 A CN111510360 A CN 111510360A
Authority
CN
China
Prior art keywords
communication module
data
module
sensor
electrical
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202010282055.1A
Other languages
Chinese (zh)
Inventor
席建成
刘哲
魏光雷
王伟
廖正良
刘国峰
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ningxia Beidou Technology Co ltd
Original Assignee
Ningxia Beidou Technology Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ningxia Beidou Technology Co ltd filed Critical Ningxia Beidou Technology Co ltd
Priority to CN202010282055.1A priority Critical patent/CN111510360A/en
Publication of CN111510360A publication Critical patent/CN111510360A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00Data switching networks
    • H04L12/28Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/40Bus networks
    • H04L12/40006Architecture of a communication node
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01DMEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D21/00Measuring or testing not otherwise provided for
    • G01D21/02Measuring two or more variables by means not covered by a single other subclass
    • GPHYSICS
    • G08SIGNALLING
    • G08CTRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
    • G08C17/00Arrangements for transmitting signals characterised by the use of a wireless electrical link
    • G08C17/02Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00Network arrangements or protocols for supporting network services or applications
    • H04L67/01Protocols
    • H04L67/02Protocols based on web technology, e.g. hypertext transfer protocol [HTTP]
    • H04L67/025Protocols based on web technology, e.g. hypertext transfer protocol [HTTP] for remote control or remote monitoring of applications
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L69/00Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
    • H04L69/08Protocols for interworking; Protocol conversion
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00Data switching networks
    • H04L12/28Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/40Bus networks
    • H04L2012/40208Bus networks characterized by the use of a particular bus standard
    • H04L2012/40228Modbus

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Security & Cryptography (AREA)
  • Selective Calling Equipment (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)
  • Alarm Systems (AREA)

Abstract

The invention discloses a remote multi-channel signal comprehensive acquisition system for an electrical facility, wherein a sensor is arranged on the electrical facility and acquires various parameters; the bus communication module sends various parameters to the host module; the host module communicates with all the devices mounted on the bus communication module in a polling mode, sends an execution instruction, receives data from the sensor, packages frame data and uploads the frame data to the system platform, and controls the working mode of the multi-channel communication module; the multi-channel communication module at least uses two communication circuit modules as parallel channels; the system platform is used for registering, receiving, processing data, judging rules, storing, comprehensively displaying data, exporting data reports, issuing control instructions and performing background management functions, and remote target data monitoring and alarm disposal are completed. And installing sensors on the electrical facilities, acquiring various parameters of the electrical facilities, displaying remote target multi-data summary in real time, and performing equipment inspection and active fault alarm handling.

Description

Remote multi-channel signal comprehensive acquisition system for electrical facilities
Technical Field
The invention relates to the technical field of electricity, in particular to a remote multi-channel signal comprehensive acquisition system for an electrical facility.
Background
The management department manages its electrical facilities, need to know its running state (including dynamic operating parameter, environmental parameter), if to high-low voltage distribution cabinet, the power supply relay, the transformer substation, mobile merchant's basic station (iron tower company), the product or the position of early production in markets such as cold chain vehicle are monitored, because of it has intelligent degree not high, the integration level is not high, rely on manual management basically, need carry the instrument and meter to the scene and carry out data acquisition, including visual, insert formula test etc. also not high, the efficiency is also low, still there is certain safety hazard simultaneously, it is comparatively difficult and ageing not strong to acquire data.
Disclosure of Invention
The invention provides a remote multi-channel signal comprehensive acquisition system for electrical facilities, which is characterized in that products or parts produced in the early stage in the market are monitored by manual management, instruments and meters are required to be carried to the site for acquiring data, including visual and access type tests and the like, the real-time degree is not high, the efficiency is low, certain safety risks exist, the data acquisition is difficult, and the timeliness is not strong.
The technical scheme of the invention is realized as follows:
a remote multi-channel signal comprehensive acquisition system for electrical facilities comprises a system platform, a multi-channel communication module, a host computer module, a bus communication module and a plurality of types of sensors, wherein the system platform, the multi-channel communication module, the host computer module, the bus communication module and the sensors are sequentially connected,
the sensor is used for being installed on an electrical facility and acquiring various parameters of the electrical facility;
the bus communication module is used for collecting and receiving various parameters returned by the sensor to the host module;
the host module is communicated with all the devices mounted on the bus communication module in a polling mode, sends an execution instruction, receives data from the sensor, packages frame data, controls the working mode of the multi-channel communication module, and uploads the packaged data to the system platform; the system platform is also used for analyzing and executing the control command issued by the system platform;
the multi-path communication module comprises a plurality of communication circuit modules, and at least two communication circuit modules are simultaneously used as parallel channels;
the system platform is used for registering, receiving, processing data, judging rules, storing, comprehensively displaying data, exporting data reports, issuing control instructions and performing background management functions, and remote target data monitoring and alarm disposal are completed.
As a preferred embodiment of the present invention, the system platform is composed of a data front-end processor, a WEB server, and a database server, which are connected in sequence, wherein the data front-end processor includes a human-computer interaction interface, the WEB server is used for parsing, running, and processing data, and the database server is used for storing data and providing data support for the WEB server.
As a preferred embodiment of the present invention, the multiplex communication module includes, but is not limited to, an NB communication module, a 4G/5G communication module, an RS232 communication module, an RS485 communication module, and a network communication module.
As a preferred embodiment of the present invention, the host module is further configured to convert the working state of the host module, the working state of the multi-channel communication module, the working state of the bus communication module, the working state of the sensor, and the working state of the power supply module into data, package the data and upload the data to the system platform, and selectively control the power consumption of the power supply module.
As a preferred embodiment of the present invention, the bus communication module is a Modbus communication module.
As a preferred embodiment of the present invention, the sensor includes a Modbus sensor and a switching value sensor, the Modbus device is connected to the host module through the bus communication module, and the switching value sensor is sequentially connected to the bus communication module and the host module through a protocol conversion module.
In a preferred embodiment of the present invention, the sensor is fixed in the upper cover and the lower cover, and the upper cover and the lower cover are fixed by screws.
As a preferred embodiment of the invention, a sealing gasket is arranged between the upper cover and the lower cover.
The invention has the beneficial effects that: the sensors are arranged on the electric facilities, various parameters of the electric facilities are obtained, the actual running condition of remote multiple targets is mastered, and the data can be judged according to big data and sent to appointed personnel, or a central commander gives orders to send pairs, and carries out operation maintenance and emergency treatment. And displaying remote target multi-data summary in real time, and performing equipment inspection and active fault alarm handling.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic block diagram of a remote multi-channel signal comprehensive acquisition system for electrical facilities according to the present invention;
FIG. 2 is a functional block diagram of one embodiment of a power module;
FIG. 3 is a schematic structural view of the upper cover;
fig. 4 is a schematic structural view of the lower cover.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in FIG. 1, the invention provides a remote multi-channel signal comprehensive acquisition system for electrical facilities, which comprises a system platform, a multi-channel communication module, a host module, a bus communication module and a plurality of types of sensors, wherein the system platform, the multi-channel communication module, the host module, the bus communication module and the sensors are connected in sequence,
the sensor is used for being installed on the electrical facility and acquiring various parameters of the electrical facility;
the bus communication module is used for collecting and receiving various parameters returned by the sensor to the host module;
the host module communicates with all the devices mounted on the bus communication module in a polling mode, sends an execution instruction, receives data from the sensor, packages frame data, controls the working mode of the multi-channel communication module, and uploads the packaged data to the system platform; the system is also used for analyzing and executing the control command issued by the system platform; the host module is also used for converting the working state of the host module, the working state of the multi-channel communication module, the working state of the bus communication module, the working state of the sensor and the working state of the power module into data, packaging the data and uploading the data to the system platform, and selectively controlling the electric energy use of the power module. The host module takes a 32-bit microprocessor as a core and realizes the functions of multi-dimension data conversion, protocol control, data synthesis, communication channel control, working state analysis, interface parameter query, remote instruction analysis and the like.
The multi-channel communication module comprises a plurality of communication circuit modules, and at least two communication circuit modules are simultaneously used as parallel channels; the multiplex communication module comprises but is not limited to an NB communication module, a 4G/5G communication module, an RS232 communication module, an RS485 communication module and a network communication module.
The system platform consists of a data front-end processor, a WEB server and a database server which are sequentially connected, wherein the data front-end processor comprises a human-computer interaction interface, the WEB server is used for analyzing, operating and processing data, and the database server is used for storing data and providing data support for the WEB server. The system platform is used for registering, receiving, processing data, judging rules, storing, comprehensively displaying data, exporting data reports, issuing control instructions and performing background management functions, remote target data monitoring and alarm handling are completed, inspection personnel are enabled to get rid of manual recording, on-site meter reading and operation in dangerous occasions, safety is improved, instantaneity is improved, convenience and rapidness are achieved, and management is efficient.
The bus communication module is a Modbus communication module. The communication control of the host module and each sensor is realized through a pair of RS-485 communication lines, the power supply for the sensors except the digital ammeter and the comprehensive protector is realized through a pair of direct current power lines, the voltage of the power lines is 12V, and the current is not less than 500 mA. The internal bus adopts Modbus protocol communication, and the host module is the initiator of each communication. All devices on the bus use a uniform 9600bps transmission rate.
The sensor includes Modbus sensor and switching value sensor, and Modbus equipment passes through bus communication module and is connected with host computer module, and the switching value sensor passes through protocol conversion module and bus communication module, host computer module and connects gradually.
The invention can be used for power distribution cabinets, power distribution facilities, relay stations, mobile base stations, power distribution machine rooms, oil engine power generation systems, targets needing to be monitored such as environment, electrical parameters and safety monitoring, and the like. The digital electric meter and the comprehensive protector are all complete equipment which can be directly connected with a Modbus bus, and other sensors adopt passive devices, so that a special protocol converter needs to be developed, for example, 5 sensors of vibration, arc light, temperature, noise and infrared are non-Modbus sensors.
The protocol converter is realized by an 8-bit singlechip, explains and converts analog quantity or digital quantity of various sensors, can only be connected with one sensor generally, is provided with a binary dial switch for setting a Modbus address, and designs L ED lamp display state or an analog quantity adjusting knob according to requirements, wherein the Modbus address is 1-255, and each continuous 4 addresses are one section and correspond to the same equipment.
Figure BDA0002446983560000051
As shown in fig. 2, the power supply module includes a 220V/AC switching power supply, a linear dc module, a lithium battery charger, a lithium battery, and a power supply isolation device. The power distribution system is connected with a 220V single-phase alternating current power supply provided in the power distribution facility, provides a direct current power supply for the whole system, and has the capability of continuously working after the commercial power is cut off. The device has a battery memory function, ensures 12 seconds through charging and discharging of a large capacitor, ensures that useful information is reported to a center, and normally shuts down a host.
As shown in fig. 3 and 4, the sensor is fixed in the upper cover and the lower cover integrated structure, and the upper cover and the lower cover are fixed by screws. A sealing gasket is arranged between the upper cover and the lower cover. All shell structures and circuit designs adopt the structural protection measures of salt fog resistance, electromagnetic compatibility, firmness, dust prevention, water prevention and the like. Meanwhile, the internal circuit adopts a redundancy design principle, at least more than 50% of load allowance is reserved in various aspects of systems, channels, acquisition and the like, the robustness of the system is ensured, and a foundation is laid for possible future capacity expansion construction in advance.
The host module embedded program functions as follows:
data acquisition: data acquisition is completed through an RS-485/Modbus bus, and the acquisition objects comprise a digital ammeter, a vibration sensor and the like, and at most 12 Modbus terminal devices.
Forming a data frame: at least two kinds of data frames are required to be formed, wherein one kind of data frame is a large data frame in normal operation, and the other kind of data frame is a small data frame in no commercial power.
Uploading data: one or more of NB-iot, 4G, RJ-45 network port, RS-232 interface upload data according to ROM settings and instructions, where the destination address and port of the first three channels can be set, and the protocol (TCP or UDP) of the 4G and RJ-45 network ports can be set.
Energy conservation: detecting whether the current power supply is commercial power or a battery, if the current power supply is the battery power supply, entering an energy-saving state, and starting up and uploading necessary data at regular intervals in the energy-saving state.
The workflow of the host module is as follows:
2.1 the main parameters that need to be set in flash first include:
basic parameter ID, version number, etc
Communication parameters
NB target address, port
4G destination address, port, protocol (TCP/UDP), whether to establish a connection
RJ-45 network port destination address, port, protocol (TCP/UDP), whether to establish a connection
Control parameters
Collecting periods of uploading data frames, including periods when the mains supply is normal and periods when the mains supply is absent
Additionally, default modbus commands need to be set in ram
2.2 Primary function method
Function of operation of communication module
Establishing connection, sending data, receiving instructions in an interruption mode, acquiring the working state of a module and the like.
Function of data processing
Transmitting data frames in an assembled manner, processing received commands
Function of time
The time function handles mainly time differences, as well as various timers, by RTC travel time.
2.3 flow scheme
2.3.1 Main State
State of power supply
Channel state
Interrupt state
2.3.2 initialization
Definition lamp number
GPIO, port initialization-automatic generation
Module initialization- -parameter setting, establishing connections
Interrupt, DMA related initialization
Clock initialization
2.3.3while Loop
When the condition is triggered or data exists, repeated receiving, packaging, sending and the like are carried out.
The host module for receiving and processing signals is accessed to various sensors or original facility instrument interfaces for data communication acquisition, analog or digital signals are acquired, are received, processed and packaged by the host module, information is transmitted to a relay or a central server by a wireless network channel through a transmission protocol, and the analog or digital information indirectly or directly reflects the electrical performance parameters of the facility, such as the electric power, the environment, security and protection, and auxiliary facilities (such as an air conditioner, a battery pack, a UPS and the like), is uploaded to the center and converted into readable information, so that managers can control the actual operation condition of remote multiple targets, judge according to big data, issue the information to designated personnel, or send pairs under the command of the center commander, and carry out operation maintenance and emergency treatment. And displaying remote target multi-data summary in real time, and performing equipment inspection and active fault alarm handling. The real-time data helps management personnel to perform decision analysis, can determine the acquired content and frequency according to the monitoring platform instruction, and can upload data to the platform according to an appointed format or push related data to other departments or units to realize data sharing.
The Modbus has the function of multi-channel data concurrent acquisition, and provides various data acquisition through the Modbus industrial bus. The existing power supply battery pack monitoring system is developed to have the advantages of position positioning (GPS or base station positioning), mobile alarm, vibration alarm, electrical parameters (voltage, current and power), environment (temperature and humidity, PM2.5 dust and dangerous water inflow early warning) parameters, switch states (working and non-working, normal and abnormal, fault states and the like), power supply battery pack quality (monitoring voltage, internal resistance and current contact temperature data discrimination), danger (arc light, trip sound and abnormal sound) detection, animal entering and video monitoring, and unattended remote-program inspection is realized.
The universal or improved structure of the upper cover and the lower cover is suitable for monitoring various electrical environments. Only the internal programs or interfaces are changed, more kinds of data acquisition and transmission are realized, and a whole set or part of sensing equipment is customized and produced according to the needs of users.
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions, improvements, etc. within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (8)

1. The utility model provides a long-range multichannel signal of electrical facilities synthesizes collection system, includes system platform, multichannel communication module, host computer module, bus communication module and a plurality of kind of sensor, system platform, multichannel communication module, host computer module, bus communication module and sensor connect gradually its characterized in that:
the sensor is used for being installed on an electrical facility and acquiring various parameters of the electrical facility;
the bus communication module is used for collecting and receiving various parameters returned by the sensor to the host module;
the host module is communicated with all the devices mounted on the bus communication module in a polling mode, sends an execution instruction, receives data from the sensor, packages frame data, controls the working mode of the multi-channel communication module, and uploads the packaged data to the system platform; the system platform is also used for analyzing and executing the control command issued by the system platform;
the multi-path communication module comprises a plurality of communication circuit modules, and at least two communication circuit modules are simultaneously used as parallel channels;
the system platform is used for registering, receiving, processing data, judging rules, storing, comprehensively displaying data, exporting data reports, issuing control instructions and performing background management functions, and remote target data monitoring and alarm disposal are completed.
2. The electrical utility remote multi-channel signal comprehensive acquisition system of claim 1, characterized in that: the system platform consists of a data front-end processor, a WEB server and a database server which are sequentially connected, wherein the data front-end processor comprises a human-computer interaction interface, the WEB server is used for analyzing, operating and processing data, and the database server is used for storing data and providing data support for the WEB server.
3. The electrical utility remote multi-channel signal comprehensive acquisition system of claim 1, characterized in that: the multiplex communication module comprises but is not limited to an NB communication module, a 4G/5G communication module, an RS232 communication module, an RS485 communication module and a network communication module.
4. The electrical utility remote multi-channel signal comprehensive acquisition system of claim 1, characterized in that: the host module is also used for converting the working state of the host module, the working state of the multi-channel communication module, the working state of the bus communication module, the working state of the sensor and the working state of the power module into data, packaging the data and uploading the data to the system platform, and selectively controlling the electric energy use of the power module.
5. The electrical utility remote multi-channel signal comprehensive acquisition system of claim 1, characterized in that: the bus communication module is a Modbus communication module.
6. The electrical facility remote multi-channel signal comprehensive acquisition system according to claim 1 or 5, characterized in that: the sensor includes Modbus sensor and switching value sensor, Modbus equipment passes through bus communication module with the host computer module is connected, switching value sensor pass through protocol conversion module with bus communication module the host computer module connects gradually.
7. The electrical utility remote multi-channel signal comprehensive acquisition system of claim 6, characterized in that: the sensor is fixed in the upper cover and the lower cover integrated structure, and the upper cover and the lower cover are fixed through screws.
8. The electrical utility remote multi-channel signal comprehensive acquisition system of claim 7, characterized in that: and a sealing gasket is arranged between the upper cover and the lower cover.
CN202010282055.1A 2020-04-11 2020-04-11 Remote multi-channel signal comprehensive acquisition system for electrical facilities Pending CN111510360A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010282055.1A CN111510360A (en) 2020-04-11 2020-04-11 Remote multi-channel signal comprehensive acquisition system for electrical facilities

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010282055.1A CN111510360A (en) 2020-04-11 2020-04-11 Remote multi-channel signal comprehensive acquisition system for electrical facilities

Publications (1)

Publication Number Publication Date
CN111510360A true CN111510360A (en) 2020-08-07

Family

ID=71874524

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010282055.1A Pending CN111510360A (en) 2020-04-11 2020-04-11 Remote multi-channel signal comprehensive acquisition system for electrical facilities

Country Status (1)

Country Link
CN (1) CN111510360A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114401500A (en) * 2022-01-28 2022-04-26 广州市钢立科学仪器有限公司 Electrical equipment environment real-time monitoring system comprising communication unit
CN115914415A (en) * 2022-11-11 2023-04-04 贵州电网有限责任公司 RS485 communication fault detection method and system

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101329812A (en) * 2008-07-24 2008-12-24 东南大学 Multi-channel and high-accuracy data acquisition unit
CN202758232U (en) * 2012-09-05 2013-02-27 北京中船信息科技有限公司 Distributed real-time data acquisition and monitoring system
CN206224185U (en) * 2016-11-24 2017-06-06 上海电力学院 A kind of Embedded Remote Data Collecting System
CN210270548U (en) * 2019-05-31 2020-04-07 北京萨达智能技术有限公司 Distribution box monitoring system based on wireless data transmission technology

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101329812A (en) * 2008-07-24 2008-12-24 东南大学 Multi-channel and high-accuracy data acquisition unit
CN202758232U (en) * 2012-09-05 2013-02-27 北京中船信息科技有限公司 Distributed real-time data acquisition and monitoring system
CN206224185U (en) * 2016-11-24 2017-06-06 上海电力学院 A kind of Embedded Remote Data Collecting System
CN210270548U (en) * 2019-05-31 2020-04-07 北京萨达智能技术有限公司 Distribution box monitoring system based on wireless data transmission technology

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114401500A (en) * 2022-01-28 2022-04-26 广州市钢立科学仪器有限公司 Electrical equipment environment real-time monitoring system comprising communication unit
CN115914415A (en) * 2022-11-11 2023-04-04 贵州电网有限责任公司 RS485 communication fault detection method and system

Similar Documents

Publication Publication Date Title
CN106017560A (en) Cable well state comprehensive monitoring and early warning system
CN108273224A (en) Intelligent radio is built and electric fire monitoring device and system
CN103941784A (en) System and method for monitoring and acquiring power distribution station environment
CN212208349U (en) Online risk assessment device of distribution transformer based on multisource information
CN105827016A (en) Mid and low-voltage distribution network intelligent monitoring system based on 3G communication network
CN207832923U (en) A kind of distributing monitoring system
CN105807158A (en) Electric power parameter online monitoring system and monitoring control method for power grid connection points and switches
CN207727662U (en) A kind of wisdom pump house
CN111510360A (en) Remote multi-channel signal comprehensive acquisition system for electrical facilities
CN201051018Y (en) Switch case contact temperature monitoring and alarming system
CN205232151U (en) Photovoltaic exchanges measurement and control device that converges
CN204230724U (en) Can the packaged type intelligent substation of remote online monitoring
CN104993601A (en) Box-type substation remote control system
CN104377581A (en) Movable type intelligent transformer substation capable of being monitored remotely on line
CN203416050U (en) Transformer room low-voltage power supply remote real-time monitoring apparatus
CN107546856A (en) A kind of ring-main unit comprehensive monitoring system
CN208738688U (en) A kind of multifunctional unit distribution system
CN204143280U (en) Distribution substation environmental monitoring acquisition system
CN105634136A (en) Zigbee-based ultra-low power consumption passive wireless temperature measurement pre-warning system for connection point of power transmission line
CN113310524A (en) Transformer substation direct current system on-line monitoring system based on 5G communication technology
CN205246796U (en) Used leakance electricity fault detection of transformer substation device
CN104360666A (en) Internet of Things comprehensive monitoring circuit for switching station
CN211453908U (en) Multifunctional network instrument with electric leakage detection function
CN204615508U (en) A kind of based on the unattended monitoring system of electric substation of MANET
CN210605701U (en) Safe energy efficiency acquisition terminal

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
RJ01 Rejection of invention patent application after publication
RJ01 Rejection of invention patent application after publication

Application publication date: 20200807