CN101750526A - Method and device for collecting data in automatic meter reading system - Google Patents
Method and device for collecting data in automatic meter reading system Download PDFInfo
- Publication number
- CN101750526A CN101750526A CN200810218150A CN200810218150A CN101750526A CN 101750526 A CN101750526 A CN 101750526A CN 200810218150 A CN200810218150 A CN 200810218150A CN 200810218150 A CN200810218150 A CN 200810218150A CN 101750526 A CN101750526 A CN 101750526A
- Authority
- CN
- China
- Prior art keywords
- electric energy
- energy meter
- unpacking
- acquisition device
- data acquisition
- 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
Links
Images
Abstract
The invention relates to a method and a device for collecting data in an automatic meter reading system. The device comprises an electric energy meter data collector and a large meter box for containing the electric energy meter data collector and electric energy meters, wherein the electric energy meter data collector is mainly composed of a single chip, a memory module, an RS485 communication module, a power line carrier communication module, an illegal opening box detection module and a power module. In the automatic meter reading system composed of a main station, a concentrator, the electric energy meter data collector and the electric energy meters, the invention adopts a data collecting method of electric energy meter user grouping, and therefore the method adapts to the need of collecting power data from the electric energy meters with different power utilization ways in a three-phase four-wire power supply network, avoids three-phase fire wire load imbalance, and achieves the effective use of the power supply network. At the same time, the method can detect whether the data collector or the electric energy meters are illegally opened and record relevant information, therefore preventing electric larceny from occurring.
Description
Affiliated technical field
The invention belongs to electric energy meter automatic data logging technical field, particularly a kind of carrier electric energy meter data collection station.
Background technology
Adopting low voltage power line carrier as communication plan, is the important directions of the present development of Automatic meter reading system in the world.In the supply network of China, the ammeter type used owing to the user is uneven, causes centralized automatic meter-reading to run into some problems, can not unify copy reading as the energy data of full electronic electric energy meter and mechanical-electronic pulse formula electric energy meter.At this problem, correlative study is also arranged recently, the Chinese patent ZL200620062399.7 that on August 29th, 2007 announced discloses a kind of " based on bus type modularization long-distance transcribe terminal ", it has adopted the bus circuit base plate of each functional module of can pegging graft, the port of CAN bus on base plate links to each other with module, thereby is suitable for the needs of while acquisition pulse electric energy meter and RS485 electric energy meter electric weight data; And the Chinese patent ZL200720155562.9 that announces on August 6th, 2008 discloses " a kind of carrier electric power acquisition terminal ", it is innovated to some extent than patent ZL200620062399.7, promptly removed the bus circuit base plate, optocoupler pulse collection module all links to each other with single-chip microcomputer with the RS485 communication module, when acquisition pulse by power supply source (12V) outside thus adapt to different ammeters for passive ammeter power supply.
These two kinds of electric energy meter data acquisition terminals all are to be suitable for the needs of gathering the electricity consumption data on the never isostructural electric energy meter by the improvement inner structure, if but in the supply network of three-phase and four-line, adopt single-phase electricity consumption in the user family that has, adopt the three-phase electricity consumption in the user family that has, then also do not have at present a kind of electric energy meter collector can adapt to this in same supply network single-phase electricity consumption and the simultaneous situation of three-phase electricity consumption, promptly can not be in same supply network simultaneously from the unified electric quantity data of gathering of electric energy meter of different power modes.Simultaneously, in same supply network,, occur laod unbalance between the three-phase firewire easily, influenced effective utilization of electrical network because the mode of connection of single-phase table is different and the shortage unified management.
In addition,, but be not found and record, then not only can cause national electricity charge losses of revenues, but also damage electric power facilities such as electric energy meter data acquisition device and electric energy meter if electric energy meter data acquisition device and electric energy meter are illegally unpacked or uncapped by electricity filching person.
Summary of the invention
Be to solve the weak point in the background technology, the invention provides a kind of in Automatic meter reading system the method and apparatus of image data.In the supply network of three-phase and four-line, it adopts the collecting method of electric energy meter user grouping, thereby has been suitable for the needs of gathering electric quantity data in same supply network from the electric energy meter of different power modes, has realized effective utilization of electrical network; Simultaneously, whether the electric energy meter that it can detect the electric energy meter data acquisition device, be connected with the electric energy meter data acquisition device is illegally unpacked, and prevents that the stealing situation from taking place.
For achieving the above object, the invention provides a kind of in Automatic meter reading system the method for image data, it is characterized in that: in the Automatic meter reading system of forming by main website, concentrator, electric energy meter data acquisition device and electric energy meter, the electric energy meter data acquisition device receives the configuration parameter that main website sends by RS485 communication earlier, then according to self internal processes power consumption and relay status, and according to predetermined configuration parameter copy reading information is carried out computing and storage by RS485 bus timing copy reading electric energy meter;
Behind the electric quantity data of the intact electric energy meter of copy reading, the electric energy meter data acquisition device passes back to main website or concentrator by carrier communication with the electric energy meter data;
Say the word in main website and to carry out when user's power on/off operate, the order that the electric energy meter data acquisition device transmits by carrier wave reception master station, and order is sent to the electric energy meter that links to each other with it through the RS485 communication mode;
When the electric energy meter data acquisition device detects table case state in real time according to the trace routine of unpacking, if illegal unpacking, then the electric energy meter data acquisition device is preserved the illegal state and the number of times of unpacking of unpacking, and send out the full trip signal of relay to the electric energy meter that is connected with it by the RS485 communication mode, simultaneously, the state of will illegally unpacking reaches the number of times of unpacking and is back to main website or concentrator.
The present invention also provide a kind of in Automatic meter reading system the device of image data, it comprises the electric energy meter data acquisition device, is used to adorn the big table case of electric energy meter data acquisition device and electric energy meter, the electric energy meter data acquisition device is mainly by single-chip microcomputer, memory module, RS485 communication module, Power Line Carrier Communication Module, illegally unpack detection module and power module formed, wherein:
Memory module is passed through I
2The C bus links to each other with single-chip microcomputer, and the data of memory module storage are passed through I
2C bus and single-chip microcomputer transmit mutually, by single-chip microcomputer relevant data are handled;
The RS485 communication module is issued electric energy meter by the RS485 bus with command information, and gathers the power consumption and the relay status of electric energy meter;
The electric line carrier communication module is given main website or concentrator by carrier channel with electric quantity data, the relay status that collects, the information uploading of unpacking;
The illegal detection module of unpacking, it is connected on the I/O mouth of single-chip microcomputer, link to each other with big table case by two leads simultaneously, whether be used to detect big table case is illegally unpacked, take place if any the illegal situation of unpacking, then start the relay of all electric energy meters under the tripping electric energy meter data acquisition device, and by illegal number of times and the time of unpacking of single-chip microcomputer record.
Power module is the three-phase supply module, adopts the three-phase and four-line mains supply.
The invention has the beneficial effects as follows, it provides a kind of method and apparatus of gathering the electric energy meter data in Automatic meter reading system, specific to, in the supply network of three-phase and four-line, it has adopted the method for electric energy meter user grouping image data, thereby has adapted to the needs of gathering electric quantity data in same supply network from the electric energy meter of different power modes, simultaneously, avoid the three-phase firewire laod unbalance, realized effective utilization of electrical network; Simultaneously, it can detect the electric energy meter data acquisition device or whether electric energy meter is illegally unpacked, and with relevant information records, thereby prevent that the stealing situation from taking place.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is an application synoptic diagram of the present invention
Fig. 2 is the block diagram of electric energy meter data acquisition device among the present invention
Fig. 3 is an electric weight copy reading process flow diagram of the present invention
Fig. 4 is the illegally workflow diagram of unpacking trace routine of the present invention
Fig. 5 is the circuit theory diagrams of the interior illegal detection module of unpacking of electric energy meter data acquisition device among the present invention
Embodiment
Describe the specific embodiment of the present invention in detail below in conjunction with accompanying drawing.
As shown in Figure 1, in the supply network of three-phase and four-line, the Automatic meter reading system of being made up of main website, concentrator, electric energy meter data acquisition device and electric energy meter is to realize like this electric energy meter is carried out data acquisition.
At first, the electric energy meter data acquisition device receives the configuration parameter that main website sends by RS485 communication earlier, and configuration parameter comprises user grouping information, and the step of user grouping is as follows:
The first step, according to the capacity of storer in the electric energy meter data acquisition device electric energy meter is divided into the 1-N group according to affiliated user's difference, a user is one group, every group information comprises 1 group number and 3 table numbers, and each user can install 1～3 single-phase electric energy meter, if having only a single-phase electric energy meter in this user family, then other two table number vacancy position data are set to 0, equally, if having only two single-phase electric energy meters in this user family, then another table number vacancy position data are set to 0;
Second step, guarantee the three-phase firewire load balance, if there are three single-phase tables in user family, then three single-phase tables in this user family can be considered a three-phase table, and these three single-phase tables are connected on three different live wires; If there are two single-phase tables in user family, these two single-phase tables also are connected in respectively on two different live wires.
Secondly, the electric energy meter data acquisition device will receive the configuration parameter that comes and be stored to the storer of self;
Then, the electric energy meter data acquisition device is according to the program setting of single-chip microcomputer, regularly the electric quantity data of its electric energy meter that is connected of copy reading;
At last, behind the electric quantity data of intact all electric energy meters of copy reading, the electric energy meter data acquisition device passes back to main website or concentrator by carrier communication with electric quantity data.
As shown in Figure 2, the electric energy meter data acquisition device is mainly by single-chip microcomputer, memory module, RS485 communication module, Power Line Carrier Communication Module, illegally unpack detection module and power module formed, wherein among the present invention:
Memory module is passed through I
2The C bus links to each other with single-chip microcomputer, and the data of memory module storage are passed through I
2C bus and single-chip microcomputer transmit mutually, by single-chip microcomputer relevant data are handled;
The RS485 communication module is issued electric energy meter by the RS485 bus with command information, and gathers the power consumption and the relay status of electric energy meter;
The electric line carrier communication module is given main website or concentrator by carrier channel with electric quantity data, the relay status that collects, the information uploading of unpacking;
The illegal detection module of unpacking, it is connected on the I/O mouth of single-chip microcomputer.In the rig-site utilization of reality, the electric energy meter data acquisition device is installed in the big table case with the electric energy meter that is connected with it, the illegal detection module of unpacking in the electric energy meter data acquisition device has two leads to be connected with big table case, if showing case greatly is opened, then illegally the unpack normal open switch closure of detection module, the level that the illegal detection module of unpacking is connected the I/O mouth of single-chip microcomputer changes, in this way, the electric energy meter data acquisition device detects unpacking information, if detecting according to the setting of program is illegal unpacking, then start the relay of all electric energy meters under this collector of tripping, and by illegal number of times and the time of unpacking of single-chip microcomputer record.
Power module is the three-phase supply module, adopts the three-phase and four-line mains supply.
As shown in Figure 3, the present invention's electric energy meter electric weight packet of taking mode copy reading that user grouping checks meter to connect is drawn together following steps:
At step S101, flow process begins;
At step S102, start regularly copy reading electric weight program;
At step S103, judge whether the electric quantity data of 1 table of the 1st group of table the is effective, be not 0 and be valid data;
At step S104, confirm that the electric quantity data of 1 table of the 1st group of table the is valid data, by the RS485 interface it is sent the order of copy reading electric quantity data;
At step S105, behind the electric quantity data of intact 1 table of the 1st group of table the of copy reading, continue 2 tables of the 1st group of table the of copy reading the; And whether the electric quantity data of judging the 2nd table is effective, is not 0 and is valid data;
At step S106, confirm that the electric quantity data of 2 tables of the 1st group of table the is valid data, by the RS485 interface it is sent the order of copy reading electric quantity data;
At step S107, behind the electric quantity data of intact 2 tables of the 1st group of table the of copy reading, continue 3 tables of the 1st group of table the of copy reading the; And whether the electric quantity data of judging the 3rd table is effective, is not 0 and is valid data;
At step S108, confirm that the electric quantity data of 3 tables of the 1st group of table the is valid data, by the RS485 interface it is sent the order of copy reading electric quantity data;
At step S109, according to the electric energy meter electric weight data of next group of form copy reading of the 1st group of electric energy meter electric weight data of aforementioned copy reading;
At step S110, judge whether copy reading is finished for the electric quantity data of 1-N group ammeter, if copy reading has been finished, then the electric quantity data with all groups deposits storer in; Otherwise, then on the basis of now finishing the group number, adding 1, flow process enters step S103 and continues the electric quantity data of copy reading to the N group;
At step S111, all copy reading information are saved to storer;
At step S112, flow process finishes.
As shown in Figure 4, the illegal trace routine of unpacking of the present invention may further comprise the steps:
Step S201, flow process begins, the system start-up trace routine of unpacking;
Step S202, whether the level that detects the single-chip processor i/o mouth in the electric energy meter data acquisition device changes, if change, then the unpacking total degree of single-chip microcomputer calculating adds 1; Otherwise flow process enters step S206;
Step S203, detect the state of unpacking, the state of unpacking is set to allow the state of unpacking or is not allowed the state of unpacking by system before installation, if the level of single-chip processor i/o mouth changes and be current for allowing the state of unpacking, judge that then it is normal unpacking that this time unpacked, flow process directly enters step S206; Current if the level of single-chip processor i/o mouth changes for not allowing the state of unpacking, judge that then it is illegal unpacking that this time unpacked;
Step S204, after definite this time unpacked to illegal unpacking, single-chip microcomputer calculated the illegal number of times of unpacking and adds 1;
Step S205, the electric energy meter collector sends trip signal to all electric energy meters of its connection;
Step S206, flow process finishes.
As shown in Figure 5, the present invention illegally unpacks detection module mainly by normal open switch K, optocoupler U9, and sheet group R13, R14, R15 and sheet hold C5, C7 and form.Normal open switch K is connected with big table case by lead, " MCU detection " pin of optocoupler U9 is connected on the single-chip processor i/o mouth, when the situation of unpacking, normal open switch K closure, optocoupler U9 gives the opposite level of I/O mouth of single-chip microcomputer, single-chip microcomputer is according to the big table case of the change-detection folding condition of I/O level, and whether judge according to the illegal trace routine of unpacking then is illegal unpacking, and carry out recording of information this time; If illegal unpacking then sent the order of relay tripping to electric energy meter.
Claims (5)
1. the method for an image data in Automatic meter reading system, it is characterized in that: in the Automatic meter reading system of forming by main website, concentrator, electric energy meter data acquisition device and electric energy meter, the electric energy meter data acquisition device receives the configuration parameter that is sent by RS485 communication by main website earlier, then according to self internal processes power consumption and relay status, and according to predetermined configuration parameter copy reading information is carried out computing and storage by RS485 bus timing copy reading electric energy meter;
Behind the electric quantity data of the intact electric energy meter of copy reading, the electric energy meter data acquisition device passes back to main website or concentrator by carrier communication with the electric energy meter data;
Say the word in main website the user is carried out power on/off when operation, the electric energy meter data acquisition device receives order by carrier wave, and order is sent to the electric energy meter that links to each other with it through the RS485 communication mode;
When the electric energy meter data acquisition device detects table case state in real time according to the trace routine of unpacking, if illegal unpacking, then the electric energy meter data acquisition device can be preserved the illegal state and the number of times of unpacking of unpacking, and send out the full trip signal of relay to the electric energy meter that is connected with it by the RS485 communication mode, simultaneously, the state of will illegally unpacking reaches the number of times of unpacking and is back to main website or concentrator.
2. the method for image data according to claim 1, the electric energy meter data acquisition device receives the configuration parameter that is sent by RS485 communication by main website earlier, it is characterized in that: configuration parameter comprises electric energy meter user grouping information, promptly the electric energy meter that connects with the electric energy meter data acquisition device is divided into different groups according to affiliated user is different, a user is one group, and each user can install 1～3 single-phase electric energy meter; Wherein, if any three single-phase tables, then these three single-phase tables are regarded as a three-phase table in the same user family, breaker tripping and closing when realizing relay.
3. the method for image data according to claim 1, the electric energy meter data acquisition device detects table case state in real time according to the trace routine of unpacking, and it is characterized in that: the electric energy meter data acquisition device is set to allow the state of unpacking in advance or does not allow the state of unpacking; When unpacking trace routine is unpacked detection, if the level of the single-chip processor i/o mouth in the electric energy meter data acquisition device changes, the total degree of then unpacking adds 1, if state is unpacked for not allowing before this, judge that then it is illegal unpacking that this time unpacked, and connected all electric energy meters are sent the order of tripping operation.
4. the device of an image data in Automatic meter reading system, it comprises the electric energy meter data acquisition device, the electric energy meter data acquisition device mainly is made up of single-chip microcomputer, memory module, RS485 communication module, Power Line Carrier Communication Module and power module, wherein:
Memory module links to each other with single-chip microcomputer by the I2C bus, and the data of memory module storage transmit mutually by I2C bus and single-chip microcomputer, by single-chip microcomputer relevant data are handled;
The RS485 communication module is issued electric energy meter by the RS485 bus with command information, and gathers the power consumption and the relay status of electric energy meter;
The electric line carrier communication module is given main website or concentrator by carrier channel with electric quantity data, the relay status that collects, the information uploading of unpacking;
It is characterized in that: the electric energy meter data acquisition device also comprises the illegal detection module of unpacking, the illegal detection module of unpacking is connected on the I/O mouth of single-chip microcomputer, be used for detecting the illegal situation of unpacking, take place if any the illegal situation of unpacking, then start the relay of all electric energy meters under this collector of tripping, and by illegal number of times and the time of unpacking of single-chip microcomputer record.
5. the device of an image data in Automatic meter reading system, it is characterized in that: it also includes the big table case that is used to adorn electric energy meter data acquisition device and electric energy meter, and the electric energy meter data acquisition device is connected with big table case by two leads of its inner illegal detection module of unpacking.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810218150A CN101750526A (en) | 2008-12-11 | 2008-12-11 | Method and device for collecting data in automatic meter reading system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810218150A CN101750526A (en) | 2008-12-11 | 2008-12-11 | Method and device for collecting data in automatic meter reading system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101750526A true CN101750526A (en) | 2010-06-23 |
Family
ID=42477809
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810218150A Pending CN101750526A (en) | 2008-12-11 | 2008-12-11 | Method and device for collecting data in automatic meter reading system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101750526A (en) |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102104399A (en) * | 2011-01-16 | 2011-06-22 | 郭建国 | System for ensuring power line carrier communications between energy meter gateways and white information appliances |
| CN102621363A (en) * | 2012-03-30 | 2012-08-01 | 上海市电力公司 | Intelligent single-phase electrical energy metering tank |
| CN104900026A (en) * | 2014-03-04 | 2015-09-09 | 国网上海市电力公司 | Monitoring method for collector in centralized meter reading system |
| CN105139629A (en) * | 2015-08-21 | 2015-12-09 | 光一科技股份有限公司 | Method for improving data acquisition efficiency of low voltage power line broadband carrier waves |
| CN105760269A (en) * | 2016-03-09 | 2016-07-13 | 中国科学院上海高等研究院 | Case opening detection system based on USB communication and case opening detection method thereof |
| CN106443560A (en) * | 2016-09-22 | 2017-02-22 | 国家电网公司 | Judgment method for faults of current detection circuits of electric energy meters of residents |
| CN106788590A (en) * | 2016-05-25 | 2017-05-31 | 熊慎勋 | Remote automatic meter reading is realized using resident's supply network |
| CN108154675A (en) * | 2017-12-29 | 2018-06-12 | 武汉中原电子信息有限公司 | Electric Power Data Collector and acquisition system |
| CN108648429A (en) * | 2018-04-23 | 2018-10-12 | 重庆人文科技学院 | Low-consumption wireless spreads nodes awakening method |
| CN108898817A (en) * | 2018-08-23 | 2018-11-27 | 广州发展集团股份有限公司 | The measuring instrument means of communication and device, measuring instrument communication system |
| CN111007312A (en) * | 2019-11-04 | 2020-04-14 | 广西电网有限责任公司 | Identification method of multiple intelligent meters under centralized metering system and centralized metering system |
| CN112509301A (en) * | 2020-11-24 | 2021-03-16 | 深圳市科陆电子科技股份有限公司 | Centralized meter reading system and method for task distribution type acquisition through meter box terminal and storage medium |
| CN114697296A (en) * | 2020-12-29 | 2022-07-01 | 深圳旦倍科技有限公司 | Network distribution method, device, storage medium and collector |
-
2008
- 2008-12-11 CN CN200810218150A patent/CN101750526A/en active Pending
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102104399B (en) * | 2011-01-16 | 2013-10-16 | 郭建国 | System for ensuring power line carrier communications between energy meter gateways and white information appliances |
| CN102104399A (en) * | 2011-01-16 | 2011-06-22 | 郭建国 | System for ensuring power line carrier communications between energy meter gateways and white information appliances |
| CN102621363A (en) * | 2012-03-30 | 2012-08-01 | 上海市电力公司 | Intelligent single-phase electrical energy metering tank |
| CN104900026A (en) * | 2014-03-04 | 2015-09-09 | 国网上海市电力公司 | Monitoring method for collector in centralized meter reading system |
| CN105139629A (en) * | 2015-08-21 | 2015-12-09 | 光一科技股份有限公司 | Method for improving data acquisition efficiency of low voltage power line broadband carrier waves |
| CN105760269B (en) * | 2016-03-09 | 2018-10-30 | 中国科学院上海高等研究院 | Unpacking detecting system based on usb communication and its unpacking detection method |
| CN105760269A (en) * | 2016-03-09 | 2016-07-13 | 中国科学院上海高等研究院 | Case opening detection system based on USB communication and case opening detection method thereof |
| CN106788590A (en) * | 2016-05-25 | 2017-05-31 | 熊慎勋 | Remote automatic meter reading is realized using resident's supply network |
| CN106443560A (en) * | 2016-09-22 | 2017-02-22 | 国家电网公司 | Judgment method for faults of current detection circuits of electric energy meters of residents |
| CN108154675A (en) * | 2017-12-29 | 2018-06-12 | 武汉中原电子信息有限公司 | Electric Power Data Collector and acquisition system |
| CN108648429A (en) * | 2018-04-23 | 2018-10-12 | 重庆人文科技学院 | Low-consumption wireless spreads nodes awakening method |
| CN108898817A (en) * | 2018-08-23 | 2018-11-27 | 广州发展集团股份有限公司 | The measuring instrument means of communication and device, measuring instrument communication system |
| CN111007312A (en) * | 2019-11-04 | 2020-04-14 | 广西电网有限责任公司 | Identification method of multiple intelligent meters under centralized metering system and centralized metering system |
| CN111007312B (en) * | 2019-11-04 | 2022-04-22 | 广西电网有限责任公司 | Identification method of multiple intelligent meters under centralized metering system and centralized metering system |
| CN112509301A (en) * | 2020-11-24 | 2021-03-16 | 深圳市科陆电子科技股份有限公司 | Centralized meter reading system and method for task distribution type acquisition through meter box terminal and storage medium |
| CN114697296A (en) * | 2020-12-29 | 2022-07-01 | 深圳旦倍科技有限公司 | Network distribution method, device, storage medium and collector |
| CN114697296B (en) * | 2020-12-29 | 2023-12-05 | 深圳旦倍科技有限公司 | Distribution network method, device, storage medium and collector |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101750526A (en) | Method and device for collecting data in automatic meter reading system | |
| CN201170925Y (en) | Control system for centralized meter-reading of dweller remotely | |
| CN104753085A (en) | Remote online monitoring system for distributed photovoltaic access | |
| CN103023149A (en) | Intelligent power distribution terminal and intelligent power distribution system based on IEC61850 | |
| CN203352295U (en) | Intelligent terminal of rural network direct distribution station | |
| CN101576743A (en) | Distributed ring main unit monitor terminal | |
| CN206330636U (en) | LoRa water meter monitor control systems | |
| CN201335851Y (en) | Ammeter data acquisition device | |
| CN203630281U (en) | Electric transmission line zinc oxide arrester online monitoring device based on electric field sensor | |
| CN108199685A (en) | The detecting system and method for photovoltaic plant header box | |
| CN201191379Y (en) | Digital protection and control device | |
| CN201956754U (en) | Charger monitor and on-line charger monitoring device | |
| CN111077463A (en) | Balanced maintenance system for online monitoring of storage battery | |
| CN109120062A (en) | A kind of sampling unit of plug and play, intelligent GIS system and identification method of sensor | |
| CN106656775A (en) | Gateway unit of outdoor internet of things | |
| CN103178542A (en) | Distributed power grid-connection interface system and control method thereof | |
| CN202075618U (en) | Intelligent remote measurement and control terminal | |
| CN201749558U (en) | Acquisition terminal of low-voltage power line carrier resident electric meter | |
| CN206133916U (en) | Electricity utilization information collector | |
| CN213181812U (en) | Low-voltage transformer area branch monitoring system and monitoring device | |
| CN108539835A (en) | A kind of AC-DC battery chargers | |
| CN202694559U (en) | Carrier concentrator | |
| CN207066526U (en) | A kind of Internet of Things water meter device | |
| CN201749562U (en) | Automatic electrical quantity acquisition device for residential electricity utilization | |
| CN201749559U (en) | Automatic centralized reading carrier for residential watt-hour meters |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20100623 |