HK1118630B

HK1118630B - An electric energy meter reading method,system and user terminal

Info

Publication number: HK1118630B
Application number: HK08109924.4A
Authority: HK
Inventors: 卢泳
Original assignee: 卢泳
Filing date: 2008-09-05
Publication date: 2010-08-27

Description

Electric energy meter reading method, system and user terminal

Technical Field

The invention relates to the field of electric energy supply and management, in particular to management and analysis of user electricity utilization information and payment of expenses, and particularly relates to an electric energy meter reading method, an electric energy meter reading system and a user terminal device for collecting, managing and analyzing the user electricity utilization information.

Background

In the prior art, the electric energy meter of a user can be manually read, but the method has the defects of large management and cost accounting workload and low working efficiency, so that the charging period is long, and the charging and the meter reading cannot be synchronously carried out, thereby causing statistical errors.

At present, in order to overcome the defects caused by the traditional manual meter reading mode, a meter reading system for automatically reading the meter by using the existing communication system appears.

Fig. 1 is a schematic diagram of an automatic meter reading system in the prior art. This meter reading system includes: meter reading machine, meter reading main station, switch, concentrator, collector, electric energy meter, water meter, gas meter, etc.

The meter reading system has the disadvantages that the existing meter of a user must be replaced if the system is used, a specific meter is used, and otherwise, the meter reading system cannot be connected; each meter is not provided with an address, so that the meter is always in an active data uploading state, and the meter reading master station is in a passive data receiving state; in this mode, a data bottleneck is generated when the number of users is large and the power consumption peak is high, so that data is lost and data reading is inaccurate; meanwhile, in such systems, addresses are often set on collectors, and one collector manages a plurality of users, so that a meter reading master station cannot form point-to-point control over user meters, and thus, management and control such as remote power failure, power consumption property and precision setting and the like of a single user cannot be implemented; the electric energy meter, the water meter and the gas meter are integrated, the functions of meter reading mechanisms are unclear, and the system is only suitable for community property management; on the basis that information integration and sharing platforms among various industry management departments cannot be established, the construction of a remote meter reading system cannot be completed.

Fig. 2 is a schematic diagram of another automatic meter reading system in the prior art. This meter reading system includes: client computers, data storage servers, switches, routers, GPRS networks, concentrators, power meters, and the like.

The meter reading system has the disadvantages that the existing electric energy meter of a user must be replaced, otherwise, the meter reading system cannot be connected; one concentrator is provided with one address, each concentrator is provided with a plurality of meters, and each meter is not provided with an address independently, so that the remote power failure, the power utilization property, the precision setting and other management and control of the single-user meter cannot be implemented; for the similar meters, the collector is used, and the electric energy meter supplies power for recording information, so that the electric energy meter and the collector are not in the same phase electricity, and cross-phase connection is caused to generate high voltage; the technical requirement of installation engineering is high, the engineering quantity is large, a manufacturer needs to send a specially-assigned person to guide installation, and the system cost is increased invisibly; the collector adopts a visiting mode, namely the collector visits the managed meters in sequence uninterruptedly, and the method is a method for actively visiting the meters by the collector to determine whether the meters have metering data, and particularly when the meters are more, the visiting is always missed, so that the reading is easily missed, and the reading accuracy rate in practical application is lower.

As shown in fig. 3, each electric energy meter is connected to an intelligent terminal having a sending function, and is in real-time online connection with a monitoring center. The data flow of the structure is the same as that of the figure 1, and the structure is in a real-time online monitoring state. In the system shown in fig. 3, the difference from the system shown in fig. 1 is that the system shown in fig. 3 integrates the concentrator and the collector into one, which also results in high cost and is difficult for the power supply department to bear; and has higher requirements on the electric energy meter.

Disclosure of Invention

In view of the above problems in the prior art, the present invention provides a method, a system and a user terminal for reading an electric energy meter. The invention can perform non-online meter reading, avoid various error codes caused by an online monitoring mode and provide the working stability of the system; the user terminal is directly connected with the existing electric energy meter in a matching mode without changing the existing electric energy meter, and therefore the cost of the system is greatly reduced.

The invention provides a meter reading method for an electric energy meter, which comprises the following steps:

step 1, an electric energy meter matching probe of a user terminal device collects power consumption data of the electric energy meter according to preset parameters, the power consumption data is processed by a signal processor and then transmitted to a central processing unit, and the central processing unit receives the processed power consumption data transmitted by the signal processor and transmits the power consumption data to an SIM card for storage;

step 2, the server sends an instruction to the central station;

step 3, after receiving the instruction, the central station processes the instruction and then sends the processed instruction to all user terminal devices; wherein the user termination is configured with an address and the address is stored in the SIM card;

and 4, after receiving the instruction, the user terminal judges the type of the instruction, and transmits the stored electricity utilization data of the electric energy meter to a server or performs corresponding setting on the user terminal of the electric energy meter according to the judgment result.

According to the method, said step 4 comprises:

after receiving the instruction, the user terminal device judges the type of the instruction;

if the judgment result is a meter reading instruction, the instruction is compared with the address of the user terminal device, and if the comparison result is consistent, the user terminal device transmits the stored electricity consumption data of the electric energy meter to the server.

According to the method, the user terminal device transmits the stored electricity consumption data of the electric energy meter to the server, and the method comprises the following steps: the user terminal device sends the stored electricity utilization data of the electric energy meter to the central station;

and the central station transmits the electricity utilization data of the electric energy meter to the server.

According to the method, if the judgment result is a setting instruction, whether the instruction is an address-bearing instruction class or a non-address-bearing instruction class is judged;

if the command with address is in the class of the command with address, the command with address is compared with the address of the user terminal device, and if the comparison result is consistent, the user terminal device is correspondingly set;

if the command is not the command with address, corresponding setting is directly carried out on all the user terminal devices.

According to the method, further comprising the steps of: and storing the electricity utilization data of the electric energy meter.

According to the method, further comprising the steps of: and managing or analyzing the electricity utilization data of the electric energy meter.

According to the method, before the server issues the instruction to the central station, the method further comprises the following steps: and carrying out data initialization setting on the user terminal device.

According to the method, the setting instruction is one or more of setting clock timing of the user terminal device, setting recording gear of the user terminal device, setting recording precision of the user terminal device, setting power consumption type of an electric meter managed by the user terminal device, setting attribute of the electric meter managed by the user terminal device, setting time interval division of the electric meter managed by the user terminal device, setting a meter reading instruction mode of the electric meter managed by the user terminal device, and setting instructions of power failure of a user.

The invention also provides an electric energy meter reading system which comprises a plurality of user terminals, a central station and a server; wherein the content of the first and second substances,

the user terminal device comprises an electric energy meter matching probe, a signal processor, a central processing unit, a data sending and receiving unit and an SIM card: the electric energy meter adapter probe is connected with the electric energy meter, collects electric energy meter data according to preset parameters, processes the electricity utilization data through the signal processor and then transmits the electricity utilization data to the central processing unit; the central processing unit is used for receiving the processed power utilization data transmitted by the signal processor and transmitting the power utilization data to the SIM card for storage; the data sending and receiving unit is used for receiving the instruction transmitted by the central station, processing the instruction and transmitting the processed instruction to the central processor; or the central station is used for receiving the electricity consumption data of the electric energy meter sent by the central processing unit, processing the electricity consumption data and then transmitting the processed electricity consumption data to the central station; the SIM card is used for storing the address of the user terminal device, the power consumption data of the electric energy meter, the initial setting parameter, the modified setting parameter and the state information of the central processing unit;

the central station is connected with the user terminal device through a network and is communicated with the server through a network or a near-end interface; the method comprises the steps that power consumption data of the electric energy meter sent by a user terminal device are received, processed and then transmitted to a server; receiving the instruction transmitted by the server, processing the instruction and transmitting the processed instruction to the corresponding user terminal device;

the server is used for receiving the electricity utilization data of the electric energy meter transmitted by the central station and managing and analyzing the electricity utilization data; and sending the command to the central station.

The electric energy meter further comprises a storage connected with the server and used for storing the electricity utilization data of the electric energy meter transmitted by the server.

The server is a near-end server or a remote server.

The system also comprises a bank server which is connected with the server and charges according to the electricity utilization data of the electric energy meter transmitted by the server.

The central processing unit is also used for setting parameters of a clock of the user terminal device, the power utilization attribute and type of the managed electric energy meter, the recorded gear, the recorded precision and the time-sharing time period, and transmitting the set parameters to the SIM card for storage.

The user terminal device further includes: a display controller and a display device; wherein the content of the first and second substances,

the display controller is connected with the central processing unit and drives the display device under the control of the central processing unit;

and the display device is connected with the display controller and displays the data of the electricity consumption of each time period under the control of the display.

The user terminal device further includes: a power-off processor and a power-off device; wherein the content of the first and second substances,

the power-off processor is connected with the central processing unit and drives the power-off device under the control of the central processing unit;

and the power-off device is connected with the power-off processor and is used for controlling the electricity consumption of the user under the control of the power-off processor.

The user terminal device further includes: and the setting unit is connected with the SIM card and the central processing unit, and performs data initialization setting on the user terminal device by the initial setting parameters of the SIM card under the control of the central processing unit.

The user terminal device further includes: and the power failure protector is connected with the central processing unit and the SIM card, and when the outside has a power failure suddenly, all data recorded currently in the central processing unit are stored in the SIM card through the power failure protector so as to protect the data of the user terminal.

The user terminal device further includes: and the power supply unit supplies power to the user terminal device.

The central station comprises: the device comprises a first data receiving and sending unit, a central processing unit and a second data receiving and sending unit; wherein the content of the first and second substances,

the first data receiving and sending unit is communicated with the server through a network or a near-end interface, receives the instruction transmitted by the server, processes the instruction and transmits the processed instruction to the central processing unit; receiving the electricity utilization data transmitted by the central processing unit, processing the electricity utilization data and transmitting the processed electricity utilization data to the server;

the central processing unit is used for receiving the instruction transmitted by the first data receiving and transmitting unit, and transmitting the processed instruction to the second data receiving and transmitting unit; receiving the power utilization data transmitted by the second data receiving and transmitting unit, processing the power utilization data and transmitting the processed power utilization data to the first data receiving and transmitting unit; managing, analyzing and diagnosing the first data receiving and transmitting unit;

the second data receiving and sending unit is used for receiving the instruction transmitted by the central processing unit, processing the instruction and transmitting the processed instruction to the user terminal device; and receiving the power utilization data transmitted by the user terminal device, processing the power utilization data and transmitting the processed power utilization data to the central processing unit.

The central station also comprises a display which is connected with the central processor and is used for displaying the information uploaded to the server or used for displaying the working state of the central station.

The central station also comprises a power supply unit for supplying power to the central station.

The present invention also provides a user terminal device, including: the electric energy meter is connected with the probe, the signal processor, the central processing unit, the data sending and receiving unit, the clock unit, the power supply unit and the SIM card in a matching mode; wherein the content of the first and second substances,

the electric energy meter matching probe is connected with the electric energy meter, acquires the electricity utilization data of the electric energy meter according to preset parameters, and transmits the electricity utilization data to the central processing unit after the electricity utilization data is processed by the signal processor;

the central processing unit is used for receiving the processed power utilization data transmitted by the signal processor and transmitting the power utilization data to the SIM card for storage; receiving and judging the instruction transmitted by the data transmitting and receiving unit, and reading the electricity consumption data of the electric energy meter from the SIM card according to the judgment result and transmitting the electricity consumption data to the data transmitting and receiving unit; or setting parameters of a clock of the user terminal device, the power utilization attribute and type of the managed electric energy meter, the recorded gear, the recorded precision and the time-sharing time period, and transmitting the set parameters to the SIM card for storage;

the data sending and receiving unit is used for receiving the instruction transmitted by the central station, processing the instruction and transmitting the processed instruction to the central processor; the central station is used for receiving the electricity consumption data of the electric energy meter sent by the central processing unit, processing the electricity consumption data and then transmitting the processed electricity consumption data to the central station;

and the SIM card is used for storing the address of the user terminal device, the power consumption data of the electric energy meter, the initial setting parameter, the modified setting parameter and the state information of the central processing unit.

and the display device is connected with the display controller and displays the data of the electricity consumption of each time period under the control of the display controller.

The invention has the beneficial effects that:

1. the address of the meter reading system is directly arranged on the user terminal device for managing each electric energy meter, namely, each user terminal device for managing the electric energy meters has an independent address, and the address can be stored in a machine-card separation mode for large-scale production.

2. The server of the meter reading system adopts a mode of directly 'knocking' by a remote computer, so that non-online meter reading can be realized, various error codes caused by an online monitoring mode are avoided, and the working stability of the meter reading system is improved. Wherein, the mode of "knocking the door" is: when the user terminal receives the instruction of the remote computer, the instruction is processed, and the user terminal only operates by itself at ordinary times and does not transmit data.

3. The meter reading system adopts an address mode set by an SIM card, so that each user terminal device shares an independent fixed address, and thus, an independent user file can be established for a management system so as to facilitate control and management; and meanwhile, the setting function aiming at each electric energy meter can be correspondingly completed. The address mode is different from the address mode set on the collector in the prior art of fig. 1 and 2, and in fig. 1 and 2, because the address is set on the collector and each collector manages a plurality of electric energy meter users, it is impossible to perform a plurality of functions such as remote power failure, independent time sharing, independent data analysis and independent setting of power consumption properties for each electric energy meter.

4. For the patent number ZL92110485.5, the invention name is 'automatic data acquisition system of electric energy meter, water meter and gas meter', although each meter user is provided with an independent address, the invention can not complete various settings such as various functions because of using a counter, therefore, the invention is unique in that the invention not only has an independent address, but also can perform various functions of expansion, analysis and setting.

5. The user terminal device is provided with the probe or various signal output ports (pulse type or 485 bus mode and the like) adopted by the existing electric energy meter, or is directly connected with various electric energy meters in a matching mode, the electric energy meter does not need to be replaced, and the metering of the existing electric energy meter is not influenced, so the cost is greatly reduced, and the practicability is high.

The user terminal device of the invention adopts the probe for detecting outside the meter and the standard data interface connection mode by the output end of the meter, so the user terminal device can be directly connected with various existing electric energy meters in a matching mode or can be directly arranged outside the meter for detecting, and therefore, the user terminal device has no any requirement on the electric energy meters. The requirements for the electric energy meter are set forth in fig. 1, fig. 2 and fig. 3, such as including an electric energy meter with remote transmission property and the like. This puts requirements on the practical use of the system.

6. The liquid crystal display mode adopted by the invention can enable a user to master the electricity utilization condition of each time segment at any time when the user adopts a plurality of metering segments for metering, which is not realized by other systems at present. The problem that the double-meter of the existing time-sharing meter can only be limited on two time-sharing periods and other meter reading systems cannot display the usage amount in a plurality of time periods is incomparable. The method provides a more scientific means for saving energy and improving the use efficiency of electric energy.

At present, the existing electric energy meter which can be used as a display mode for a user in a time sharing way only stays at the level of a double-meter register, namely, the electric energy meter can only prompt the electricity utilization condition of two time periods. The user terminal is matched with the LCD, and sets up any time-sharing mode with unlimited time and quantity, so that it can implement time-sharing in any time interval and any number of times, and at the same time, can clearly inform user of current time-sharing state and accumulated power consumption.

7. The meter reading system adopts the precision setting operated by a remote computer to carry out more reasonable meter reading on the consumption precision of the electric energy meter, and other meter reading systems can only be limited on the precision of a counter of the electric energy meter and cannot process errors.

For example: the accuracy setting for the summary table and the accuracy of each user table may be different, and the setting number may be from 100 to 0.001. And other meter reading systems can only read the data in kilowatt hours. Kilowatt-hour for a 500-family cell, the maximum error amount can reach approximately 500 kilowatt-hours. Therefore, the meter reading system can improve the reading accuracy of the system and greatly avoid the waste of funds; the meter reading system is independent in remote setting, such as remote metering precision setting, and the precision setting of the system is that for a mechanical meter and a pulse meter, the recording frequency of one turn of a turntable and the recording frequency of each single pulse of an electronic meter can be detected for the mechanical meter. However, in the prior art, only the error caused by the data on the register is recorded, but the error superposition caused by the accumulated error of one cell often causes the error of the sum of the general table and the sub table to be increased.

8. The invention can independently set each electric energy meter under the same transformer, and comprises meter types, electricity utilization properties, metering precision and division of different metering time periods. This is most practical for a comprehensive cell, which is not possible with other meter reading systems.

The meter reading system adopts the mode that the user terminal is provided with an independent address and an embedded single chip microcomputer and is designed with various functions, so that the electricity consumption properties of each electric energy meter are different, such as a main meter, a branch meter, a commercial meter, a civil meter and various corresponding time-sharing modes thereof, and the charging price can be set, and the system has higher flexibility and scientificity.

Meanwhile, the invention can also directly implement the control modes of remote power-off and remote power-on through the user terminal device of the invention by the point-to-point control mode of the remote computer. For example, when a user is maliciously owed time, the computer can set power-off on the user power-on/power-off mode, directly send the instruction to the user terminal device, and start the power-on/power-off relay to remotely power off.

Drawings

FIG. 1 is a schematic diagram of a meter reading system according to the prior art;

FIG. 2 is a schematic diagram of another meter reading system in the prior art;

FIG. 3 is a schematic diagram of another meter reading system in the prior art;

FIG. 4 is a schematic diagram of the meter reading system according to the present invention;

FIG. 5 is a process diagram of a meter reading system according to an embodiment of the present invention;

fig. 6 is a schematic diagram of a configuration of a user terminal according to an embodiment of the present invention;

fig. 7 is a schematic diagram of a user terminal device according to an embodiment of the present invention;

FIG. 8 is a schematic diagram of the structure of a central station according to an embodiment of the present invention;

FIG. 9 is a schematic diagram of a central station of an embodiment of the present invention;

fig. 10 is a meter reading flow chart according to an embodiment of the present invention.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings.

The invention provides a method and a system for reading an electric energy meter and a user terminal device, which are used for collecting, managing and analyzing power consumption information of a user.

Example one

The invention provides an electric energy meter reading system, as shown in fig. 4, the system comprises a plurality of user terminal devices 401, a central station 402 and a server 403; wherein the content of the first and second substances,

the user terminal device 401 is arranged at the side of the corresponding electric energy meter and is configured with an address, and collects and stores the electricity consumption data of the electric energy meter; judging the instruction transmitted by the central station 402, and setting the user terminal device according to the judgment result, or sending the electric energy meter data stored by the user terminal device to the central station 402; a central station 402 connected to the user terminal 401 via a network and communicating with a server 403 via a network or a near-end interface; receiving electric energy meter data sent by the user terminal device 401, processing the electric energy meter data and transmitting the electric energy meter data to the server 403; receiving the instruction transmitted by the server 403, processing the instruction, and transmitting the processed instruction to all the user terminal devices 401;

the server 403 is configured to receive the power consumption data of the electric energy meter transmitted by the central station 402, and manage and analyze the power consumption data of the electric energy meter; sending instructions to the central station 402.

In addition, the meter reading system further includes a memory 404 connected to the server 403, and configured to sequentially store the data of the electric energy meter transmitted by the server 403 for filing.

By the meter reading system, the remote or near-end reading of the consumption of the electric energy meter can be realized without replacing the existing electric energy meter; and the remote meter reading device can be directly connected with various existing electric energy meters such as various electric card meters, electronic electric energy meters, remote transmission electric energy meters, 485 bus type electric energy meters, mechanical electric energy meters, double-head time-sharing electric energy meters and the like, so that a remote meter reading function can be completed, the cost is greatly reduced, and the remote meter reading device has adaptability.

Fig. 5 is a schematic view of a meter reading system according to an embodiment of the present invention.

In this embodiment, the user terminals (1 to n)501 and the central station 502 are connected across the power transmission line, and communicate with each other through the power transmission line, but the present invention is not limited to this communication method, and other methods such as a telephone line, a cable television transmission cable, a dedicated line, or a cell lan channel may also be used.

The server 403 may be a remote server 503a, which may communicate with the central station 502 through a wireless telephone network, a wired telephone network, the internet, a dedicated power line, and a dedicated wired or wireless network; if the server 403 is a power office server 503 a; in addition, the present embodiment further includes a bank server 504 connected to the server 503a via a network, and charges a fee according to the electric energy meter data transmitted from the power office server 503 a.

In addition, the server 403 may also be a near-end server 503b, which may communicate through a near-end communication interface, such as an infrared interface, a bluetooth interface, a USB standard interface, an RS232 standard interface, various parallel data interfaces, and a dedicated data communication method.

The configuration of the user terminal 401 is shown in fig. 6.

As shown in fig. 6, the user terminal 600 includes: the electric energy meter adapter probe 601, the signal processor 602, the central processor 603, the data sending and receiving unit 604, the clock unit 609, the power supply unit 608 and the SIM card 607;

the electric energy meter adapting probe 601 is connected with the electric energy meter, acquires electric energy meter data according to preset parameters, processes the electricity utilization data through the signal processor 602 and then transmits the electricity utilization data to the central processor 603;

a central processing unit 603, configured to receive the processed power consumption data transmitted by the signal processor 602, and transmit the power consumption data to the SIM card 607 for storage; receiving and judging the instruction transmitted by the data transmitting and receiving unit 604, and according to the judgment result, reading the electricity energy meter electricity utilization data from the SIM card 607 and transmitting the electricity energy meter electricity utilization data to the data transmitting and receiving unit 604; or setting parameters of the clock of the user terminal device, the power consumption attribute and type of the managed electric energy meter, the recorded gear, the recorded precision and the time-sharing time period, and transmitting the set parameters to the SIM card 607 for storage;

a data sending and receiving unit 604, configured to receive the instruction sent by the central station 402, and send the processed instruction to the central processor 603; the central station 402 is used for receiving the electricity consumption data of the electric energy meter sent by the central processor 603, processing the electricity consumption data and then transmitting the processed electricity consumption data to the central station;

the SIM card 607 is used for storing the address, initial setting parameters, modified setting parameters and central processing unit status information of the user terminal 600.

The signal processor 602: the acquired various types of signals are converted into signals recognizable by the user terminal device 600.

Further, preferably, the user terminal 600 further includes: a display controller 610 and a display device 611; the display controller 610 is connected to the central processing unit 603, and drives the display device 611 under the control of the central processing unit 603; the display device 611 is connected to the display controller 610, and displays the data of the electricity consumption of each time segment and the electricity consumption of the current time segment to the user under the control of the display controller.

Preferably, the user terminal 600 further includes: a power down processor 612 and a power down device 613; the power-off processor 612, connected to the central processor 603, is a driving circuit of the power-off device 612, and drives the power-off device 613 under the control of the central processor 603; the power-off device 613 is connected to the power-off processor 612, and is configured to control power consumption of the user under the control of the power-off processor, that is, to remotely control the switch for power consumption of the user.

Preferably, the user terminal 600 further includes: and a setting unit 606, connected to the SIM card 607 and the central processor 603, for performing data initialization setting on the user terminal 600 according to initial setting parameters of the SIM card under the control of the central processor 603. In addition, in the using process, as the meter reading system continuously adapts to different requirements and needs to reset the user terminal device 600, the far-end server or the near-end server 403 issues a setting instruction, the setting instruction is transmitted to the central processing unit 603 of the user terminal device 600 through the central station 402, and the setting instruction is returned to the SIM card 607 by the central processing unit 603 for storage.

Preferably, the user terminal 600 further includes: and a power failure protector 614 connected to the cpu 603 and the SIM card 607, for protecting data of the user terminal 600 when an external power failure occurs. When power is off, the cpu 603 stores all data recorded at present in the SIM card 607, and the data is stored by the SIM card.

The user terminal 600 further includes: the power supply unit 608 supplies power to the respective components of the user terminal 600.

At this time, the data stored in the SIM card 607 includes at least: the address of the user terminal device 600, the electricity consumption data of the electric energy meter, the initialization setting parameters, the storage of the meter reading data and various modified setting parameters during power failure, the state information of the central processing unit and the like;

and the central processing unit 603 receives and judges the instruction transmitted by the data transmitting and receiving unit 604, and sets parameters of the time seed unit 609, the setting unit 606, the SIM card 607, the power-off processor 612 and the display controller 610 according to the judgment result, so as to set parameters of the clock of the user terminal device, the power consumption property and type of the managed electric energy meter, the recorded gear, the recorded precision, the time sharing period, the power-off power and the like.

The user terminal device collects and stores the electricity consumption data of the electric energy meter according to preset parameters; the preset parameters include the clock of the user terminal, the power utilization property and type of the managed electric energy meter, the recorded gear, the recorded precision, the time sharing period, the power failure shutdown and the like. The above-mentioned data sending and receiving unit 604 includes the data transmission controller 604a and the transmission unit 604 b; the data transmission controller 604a is configured to convert data transmission and reception, where the conversion process includes splicing data according to a communication format when the data is transmitted, and parsing a received instruction according to the communication format when the data is received. And a transmission unit 604b for receiving and transmitting data and instructions.

In addition, the central processing unit 603 controls the operation of the entire user terminal device 600, and controls the collection and storage of power consumption data of the electric energy meter, the reception and transmission of data and instructions, the control of the display mode of the display, the operation of the power-off control switch, the reading of data in the SIM card, the storage of data in the SIM card, and the like.

In the above embodiment, the SIM card 607 may be an IC card or the like. The clock unit 609 is used to record the time, the initial setting of which can be controlled remotely.

Fig. 7 is a schematic structural diagram of a user terminal 700 in the case of transmitting by using a power line according to an embodiment of the present invention.

The user terminal and the central station are both connected to the power transmission line, and the power supply unit 608 in fig. 6 is directly powered by the power line, and in this embodiment, as shown in fig. 7, a power supply circuit 708 is adopted;

the central processing unit 603 in fig. 6 may be a single chip, such as the embedded single chip 703 in fig. 7;

the display controller 610 of FIG. 6 employs the display driver chip 710 shown in FIG. 7;

the signal processor 602 of fig. 6 may employ a pulse signal identification circuit 702 as shown in fig. 7;

the power cut processor 612 and the power cut device 613 in fig. 6 may adopt a relay driving circuit 712 and a magnetic saturation type relay 713 shown in fig. 7; wherein the relay driving circuit 712 and the magnetic saturation type relay 713 constitute a remote-controlled power-off switching circuit;

the electric energy meter adapting probe 601 in fig. 6 can adopt an optoelectronic probe 701 as shown in fig. 7, and is used for carrying out digital processing on an analog state; in addition, other standard data interfaces can be adopted to be connected with the output end of the electric energy meter, for example, the pulse recognition device can be converted into a pulse recognition device to be matched and connected with various electronic meters;

the display device 611 in fig. 6 may employ the seven-segment liquid crystal display panel 711 shown in fig. 7, but is not limited thereto.

In addition, the SIM card is inserted into the user terminal device and can be separated from the machine.

In this embodiment, the data transmitting and receiving unit 604 is a power carrier unit 704 shown in fig. 7, and a modem for data transmission using a power line is used. It is low in cost and convenient to install. But the use of telephone lines, cable television transmission lines, local area networks and dedicated lines is not excluded in practical use.

The following describes in detail the recording and setting by the user terminal.

When receiving the instruction, because the classification of instruction can be divided into two parts of meter reading data and instruction issue, its theory of operation is when copying data: the data reading instruction is converted by the power carrier unit 704 and then transmitted to the singlechip 703; the single chip microcomputer 703 judges the instruction, compares the instruction with the address in the SIM card 707 when the instruction is judged to be a data copying instruction, splices the data according to the communication protocol when the data transmission is confirmed to be required, and returns the data by the power carrier unit 704.

When the command is determined to be other command, it can drive various basic functions, including power-off, and it needs to go through the relay driving circuit 712 to the magnetic saturation relay 713 for switching operation.

The input of the instruction is transmitted to the single chip microcomputer 703 after being converted by the power carrier unit 704 after being sent by the server 403. And is identified by the single chip microcomputer 703. The range of instructions includes:

a clock unit 709 of the user terminal 700 is provided, which can initially set a clock at the time of installation and can also be used to correct the time. The clock unit 709 is set by the singlechip 703. It is used for setting the time correction of the clock of the user terminal.

The properties of the power meter 705 are set. It may perform table attribute settings for the subscriber terminal 700 that manages the power meter 705, storing the setting parameters in the SIM card 707. The SIM card 707 is set by the singlechip 703. Attributes of a table include, but are not limited to: industrial meters, commercial meters, residential meters, and the like.

A metered time period is set. It can perform the setting of the metering period for the user terminal 700 of the managed electric energy meter 705, and store the setting parameters in the SIM card 707. The singlechip 703 is used for setting a clock unit 709 and an SIM card 707. The maximum setting amount of the system is one segment every half hour. This can greatly improve the resolution of the peak and valley of power consumption.

The gear of the user terminal 700 is set. The user terminal 700 of the managed electric energy meter 705 is subjected to measurement identification setting of the number of revolutions per degree (revolutions/KW.h) of a mechanical meter or the number of pulses per degree (imp/KW.h) of an electronic electric energy meter, and the setting parameters are stored in the SIM card 707. The pulse signal identification circuit 702 is set by a singlechip 703. Through the operation, the system can identify and manage different electric energy meters at the same time so as to ensure that different electric energy meters in one cell can be brought into the management range of the system.

The measurement accuracy of the user terminal 700 is set. It is to set the identification accuracy of the user terminal device 700 of the managed electric energy meter 705 and store the setting parameters in the SIM card 707. The pulse signal identification circuit 702 and the SIM card 707 are set by a singlechip 703. For example, 0.1. multidot.rev/KW. multidot.h setting can be performed per rev/KW. multidot.h.

And setting a power-off instruction of a user. The magnetic saturation relay 713 is set by the single chip 703 via the relay drive circuit 712. It can remotely cut off and power on the long-term defaulting user.

Inputting a meter reading instruction: after the server sends an instruction, the instruction is input to the single chip microcomputer 703 through the power carrier unit 704, and the single chip microcomputer 703 reads an address configured by the user terminal device 700 from the SIM card 707 and compares the address with the instruction. After the data are matched, the data of the electric energy meter in the user terminal device 700 are sent out through the power carrier unit 704; if not, no treatment is given.

In the present embodiment, the structure and the operation principle of the central station are shown in fig. 8 and 9, respectively.

Fig. 8 is a schematic diagram of a central station 800 according to the present invention. As shown, the central station 800 includes: a first data receiving and transmitting unit 801, a central processing unit 802, a second data receiving and transmitting unit 803; wherein the content of the first and second substances,

the first data receiving and sending unit 801 communicates with the server through a network or a near-end interface, receives an instruction transmitted by the server, processes the instruction, and transmits the processed instruction to the central processing unit 802; receiving the electricity consumption data transmitted by the central processing unit 802, processing the electricity consumption data and transmitting the processed electricity consumption data to the server;

a central processing unit 802, configured to receive the instruction transmitted by the first data receiving and sending unit 801, and transmit the processed instruction to the second data receiving and sending unit 803; the power utilization data transmitted by the second data receiving and transmitting unit 803 is received and transmitted to the first data receiving and transmitting unit 801 after being processed; the first data receiving and transmitting unit 801 is managed, analyzed, and diagnosed;

a second data receiving and sending unit 803, configured to receive the instruction sent by the central processing unit 802, process the instruction, and send the processed instruction to the user terminal; the power consumption data transmitted by the user terminal device is received, processed and transmitted to the central processing unit 802.

The network comprises a wireless communication network, a wired telephone network, an internet or a power network special communication network and a specially-arranged wired or wireless network; the near-end interface is an infrared interface, a Bluetooth interface, a USB standard interface, an RS232 standard interface, various parallel data interfaces and a special data communication method.

The central station 800 further comprises a display 805 connected to the central processor 802 for displaying information uploaded to the server or for displaying the operating status of the central station 800.

The central station 800 further includes a power supply unit 804 for supplying power to the central station 800.

Wherein, when data is transmitted remotely, the first data receiving and transmitting unit 801 comprises a first data processing unit 801d, i.e. a communication unit and its corresponding modem, such as a wireless telephone network modem (WT)801a, or a wired telephone network modem (YT)801b, or a power network dedicated communication modem (FK)801 c; when the near-end meter reading is adopted, the first data receiving and sending unit 801 includes a first data processing unit 801d, i.e., a communication unit and a near-end interface (JD), and the port can adopt an infrared, a bluetooth, a USB standard interface, an RS232 standard interface, various parallel data interfaces and a dedicated data communication method.

The display 805 is a display device for the cpu 802 regarding its operating state. It is a circuit composed of a liquid crystal display.

The central processing unit 802 is mainly used for analyzing and converting the commands issued by the server through the first data receiving and sending unit 801 and downloading the commands to all the managed user terminals through the second data receiving and sending unit 803. In addition, it also has the functions of managing, analyzing and diagnosing the first data receiving and transmitting unit 801 and other circuits, and the display is used for prompting and uploading to a remote server for corresponding prompting.

Fig. 9 is a schematic block diagram of a central station 900 according to an embodiment of the present invention. In this embodiment, the central station is placed under any one of three-phase power of the same transformer. Wherein the content of the first and second substances,

the second data receiving and transmitting unit 803 is a power carrier modem 903. The central processing unit 802 may be an embedded single chip 902 as shown in fig. 9, and the power supply unit 804 is powered by a power line, such as a power supply circuit 904 as shown in fig. 9. The first data receiving and transmitting unit 801 described above is the first receiving and transmitting unit 901 shown in fig. 9.

In addition, in order to prevent mutual interference between a plurality of communication modes, the central station 900 is designed to adopt a queuing scheme to process communication. Meanwhile, in order to prevent from external communication error interference and intentional attack, the central station also sets a special password in the embedded single chip microcomputer 902. The special password has the functions of: when the server wants to enter the system, the server needs to be compared with a special password in the embedded single chip 902 of the central station of the system, and if the server is the same as the special password, the server is allowed to be connected; if not, ignore.

Example two

The invention also provides a meter reading method of the electric energy meter, which comprises the following steps: step 1, a user terminal device collects and stores power consumption data of an electric energy meter according to preset parameters; the preset parameters include the clock of the user terminal device, the power utilization attribute and type of the managed electric energy meter, the recorded gear, the recorded precision, the time sharing period, the power failure and the like.

Step 2, the server sends an instruction to the central station; step 3, after receiving the instruction, the central station processes the instruction and then sends the processed instruction to all user terminal devices; wherein the user terminal device is configured with an address; and 4, after receiving the instruction, the user terminal device judges the instruction, and transmits the stored electric energy meter data to the server or performs corresponding setting on the user terminal device of the electric energy meter according to the judgment result.

The meter reading method of the present invention will be described in detail below with reference to fig. 5 to 10.

When the user terminal is installed and used, a SIM card is first inserted into the user terminal 401, and the user terminal is initially set by the setting unit 606 according to the initial setting parameters stored in the SIM card.

Fig. 10 is a flowchart of a meter reading method according to an embodiment of the present invention. Wherein the content of the first and second substances,

the user terminal 501 collects and stores the electricity consumption data of the electric energy meter according to the preset metering time period (see step S1); when the remote server 503a is employed, the server 503a issues an instruction to the central station 502 (see step S2); after receiving the instruction, the central station 502 processes the instruction and sends the processed instruction to all the user terminals 501 (see step S3); the user terminal 501 receives the command (see step S4), determines the type of the command, compares the command with the address of the user terminal (see step S6) if the determination result is a meter reading command (see step S5), and transmits the stored electric energy meter data to the central station (see step S7) if the comparison result is consistent; the central station transmits the electricity consumption data of the electric energy meter to the server (see step S8); and storing, managing or analyzing the electricity consumption data of the electric energy meter (see step S9).

If the address does not match as a result of the determination in step S6, the instruction is discarded and no processing is performed.

If the determination result in the above step S5 is a set command, it is determined whether the command is a tape address command or a non-tape address command (see step S11); if the command is with address, comparing the command with the address of the user terminal (see step S12), and if the comparison result is consistent, setting the user terminal correspondingly (see step S13);

if the determination result in the above step S11 is that the user terminal is not the address-bearing command class, all the user terminals are directly set accordingly (see step S14).

The setting instruction is one or more of setting clock timing of the user terminal device, setting recording gear of the user terminal device, setting recording precision of the user terminal device, setting power consumption type of the electric energy meter managed by the user terminal device, setting attribute of the electric energy meter managed by the user terminal device, setting time interval division of the electric energy meter managed by the user terminal device, setting a meter reading instruction mode of the electric energy meter managed by the user terminal device, and setting an instruction for a user to stop power supply. After the setting is finished, the setting parameters are stored in the user terminal.

The above examples are intended to illustrate the invention, but not to limit the invention.

Claims

1. A meter reading method of an electric energy meter is characterized by comprising the following steps:

step 2, the server sends an instruction to the central station;

2. The electric energy meter reading method according to claim 1, wherein the step 4 comprises:

3. The method for reading the electric energy meter according to claim 2, wherein the user terminal device transmits the stored electricity consumption data of the electric energy meter to the server, and the method comprises the following steps:

the user terminal device sends the stored electricity utilization data of the electric energy meter to the central station;

4. The electric energy meter reading method according to claim 2, wherein if the judgment result is a setting instruction, whether the setting instruction is an addressed instruction or a non-addressed instruction is judged;

5. The electric energy meter reading method according to claim 3, further comprising the steps of: and storing the electricity utilization data of the electric energy meter.

6. The electric energy meter reading method according to claim 3, further comprising the steps of: and managing or analyzing the electricity utilization data of the electric energy meter.

7. The method for reading the electric energy meter according to claim 1, wherein before the server issues the instruction to the central station, the method further comprises the following steps: and carrying out data initialization setting on the user terminal device.

8. The electric energy meter reading method according to claim 4, wherein the setting instruction is one or more of setting a clock timing of the user terminal device, setting a recording gear of the user terminal device, setting a recording precision of the user terminal device, setting a power consumption type of an electric meter managed by the user terminal device, setting an attribute of the electric meter managed by the user terminal device, setting a time interval division of the electric meter managed by the user terminal device, setting a meter reading instruction mode of the electric meter managed by the user terminal device, and setting an instruction for a user to stop power supply.

9. The electric energy meter reading system is characterized by comprising a plurality of user terminals, a central station and a server; wherein the content of the first and second substances,

the system comprises a user terminal device and a data processing device, wherein the user terminal device comprises an electric energy meter matching and connecting probe, a signal processor, a central processing unit, a data sending and receiving unit and an SIM card; the electric energy meter adapter probe is connected with the electric energy meter, collects electric energy meter data according to preset parameters, processes the electricity utilization data through the signal processor and then transmits the electricity utilization data to the central processing unit; the central processing unit is used for receiving the processed power utilization data transmitted by the signal processor and transmitting the power utilization data to the SIM card for storage; the data sending and receiving unit is used for receiving the instruction transmitted by the central station, processing the instruction and transmitting the processed instruction to the central processor; or the central station is used for receiving the electricity consumption data of the electric energy meter sent by the central processing unit, processing the electricity consumption data and then transmitting the processed electricity consumption data to the central station; the SIM card is used for storing the address of the user terminal device, the power consumption data of the electric energy meter, the initial setting parameter, the modified setting parameter and the state information of the central processing unit;

10. The system according to claim 9, further comprising a memory connected to the server for storing the electricity consumption data of the electric energy meter transmitted from the server.

11. The system of claim 9, wherein the server is a near-end server or a remote server.

12. The system of claim 9, further comprising a banking server coupled to the server for collecting charges based on the power consumption data of the electric energy meter transmitted from the server.

13. The system of claim 9, wherein the cpu is further configured to set parameters of a clock of the user terminal, power consumption attributes and types of the managed electric energy meter, a recorded gear, a recorded accuracy, and a time-sharing period, and transmit the set parameters to the SIM card for storage.

14. The system of claim 13, wherein the user terminal further comprises: a display controller and a display device; wherein the content of the first and second substances,

15. The system of claim 13, wherein the user terminal further comprises: a power-off processor and a power-off device; wherein the content of the first and second substances,

16. The system of claim 13, wherein the user terminal further comprises: and the setting unit is connected with the SIM card and the central processing unit, and performs data initialization setting on the user terminal device by the initial setting parameters of the SIM card under the control of the central processing unit.

17. The system of claim 13, wherein the user terminal further comprises: and the power failure protector is connected with the central processing unit and the SIM card, and when the outside has a power failure suddenly, all data recorded currently in the central processing unit are stored in the SIM card through the power failure protector so as to protect the data of the user terminal.

18. The system of claim 13, wherein the user terminal further comprises: and the power supply unit supplies power to the user terminal device.

19. The system of claim 9, wherein the central station comprises: the device comprises a first data receiving and sending unit, a central processing unit and a second data receiving and sending unit; wherein the content of the first and second substances,

20. The system of claim 19, wherein the central station further comprises a display coupled to the central processor for displaying information uploaded to the server or for displaying the operating status of the central station.

21. The system of claim 19, wherein the central station further comprises a power supply unit configured to provide power to the central station.

22. A user termination, comprising: the electric energy meter is connected with the probe, the signal processor, the central processing unit, the data sending and receiving unit, the clock unit, the power supply unit and the SIM card in a matching mode; wherein the content of the first and second substances,

23. The user termination of claim 22, wherein the user termination further comprises: a display controller and a display device; wherein the content of the first and second substances,

24. The user termination of claim 22, wherein the user termination further comprises: a power-off processor and a power-off device; wherein the content of the first and second substances,

25. The user termination of claim 22, wherein the user termination further comprises: and the setting unit is connected with the SIM card and the central processing unit, and performs data initialization setting on the user terminal device by the initial setting parameters of the SIM card under the control of the central processing unit.

26. The user termination of claim 22, wherein the user termination further comprises: and the power failure protector is connected with the central processing unit and the SIM card, and when the outside has a power failure suddenly, all data recorded currently in the central processing unit are stored in the SIM card through the power failure protector so as to protect the data of the user terminal.

27. The user termination of claim 22, wherein the user termination further comprises: and the power supply unit supplies power to the user terminal device.