CN201965694U - Intelligent energy meter centralized charging terminal - Google Patents
Intelligent energy meter centralized charging terminal Download PDFInfo
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- CN201965694U CN201965694U CN201120016736XU CN201120016736U CN201965694U CN 201965694 U CN201965694 U CN 201965694U CN 201120016736X U CN201120016736X U CN 201120016736XU CN 201120016736 U CN201120016736 U CN 201120016736U CN 201965694 U CN201965694 U CN 201965694U
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Abstract
The utility model discloses an intelligent energy meter centralized charging terminal, relating to the technical field of combined power equipment and computers. The intelligent energy meter centralized charging terminal comprises an IC (integrated circuit) card interface circuit, an ESAM (embedded secure access module) module circuit and two groups of communication module interface circuits, wherein the IC card interface circuit is connected with a CPU (Central Processing Unit) through an ICREST, an ICIO data pin and a reset pin, the ESAM module circuit is connected with the CPU through a data pin and reset pins SAMIO and SAMRST, and the two groups of communication module interface circuits are respectively connected with the CPU, thereby communication between an intelligent energy meter and a collector is realized, communication data between the collector and the intelligent energy meter can be monitored and retransmitted, and normal communication of a system is ensured. The IC card interface circuit finishes communication with a user card interface, and the ESAM module circuit finishes data exchange, reset operation and various safety authentication operations of encryption, decryption and calculation. The intelligent energy meter centralized charging terminal is convenient and simple to operate and is safe and reliable.
Description
Technical field
The utility model relates to power equipment and combines technical field with computing machine, particularly relates to the concentrated terminal of supplementing with money of a kind of intelligent electric energy meter.
Background technology
At present intelligent electric meter has been supplemented with money dual mode, a kind of is to supplement with money by purchasing in the electricity card insertion intelligence table, and another kind is to carry out long-range supplementing with money by communication.The former takes the control ammeter by the intelligent electric meter of purchasing the insertion of electricity card this locality, and is safe and reliable, if but ammeter is installed in the place of dark place and invariant operation, especially in modern metropolitan cities, at skyscraper, ammeter all is installed in the forceful electric power motor-pumped well, and the user will supplement very difficulty of operation with money to ammeter; Long-range the supplementing with money of the latter is primarily aimed at long-range intelligent electric meter of supplementing with money, Utilities Electric Co.'s back-end data sends to concentrator by GPRS, concentrator arrives collector by low-voltage power carrier with data transmission again, last collector is transferred in the operated intelligent electric meter by RS485, this mode is because the path complexity of transmission, in case going wrong, certain node will influence the bookkeeping of supplementing with money of a lot of electric supply meters, the reliability of while low-voltage power carrier and the success ratio of once transmitting are lower, can cause user's ammeter in time not supplement with money and restore electricity, bring the electricity consumption trouble to the user.
For the user can make things convenient for, reliable and secure the power information of supplementing and in time understand oneself to the electric energy meter of oneself with money, we gather the excellent characteristics of top dual mode, have designed intelligent electric energy meter and have concentrated and supplement terminal with money and comprise that the control intelligent electric energy meter supplements the program module of terminal with money.Intelligent electric energy meter is concentrated and to be supplemented terminal with money and directly be connected with many intelligent electric meters by RS485, and minimizing intermediate conveyor link greatly reduces the transmission fault problem, has improved the reliability of communication; Be installed in sub-district or doorway, unit nearby, solved the user supplements inconvenient operation with money to intelligent electric meter problem; The intelligent electric meter that connects swiped the card supplement with money, intelligent electric energy meter is concentrated and is supplemented terminal with money and also can in time remind the user to purchase electricity to supplement with money, avoid arrearage to have a power failure simultaneously, and the user also can carry out the power information inquiry by button or plug-in card at any time.
Find that by literature search number of patent application is that 201010283843.9 file discloses " a kind of power equipment control method, device and related system thereof " its purpose and is to be used for revising simultaneously the configuration of polytype power equipment.Comprise and obtain user-selected intelligent power equipment type; Determine the corresponding equipment configuration template according to described intelligent power equipment type; Generate first configuration file according to described equipment configuration template; Provide first configuration file of described generation to the user, and obtain second configuration file after the user's modification; According to the described second configuration file calling communication protocol component, set up network by described second configuration file corresponding communication interface assembly and corresponding intelligent power equipment and connect, and send described second configuration file to described intelligent power equipment.But this novel purpose, technical scheme and feature thereof and above-mentioned application is different.
The utility model content
The purpose of this utility model is to design the concentrated terminal of supplementing with money of a kind of intelligent electric energy meter, in the hope of reducing the intermediate conveyor link, reduces transmission fault, improves the reliability of communication; Overcome local expense control ammeter and carry out long-range deficiency of supplementing with money, solve the user supplements inconvenient operation with money to intelligent electric meter problem.
The purpose of this utility model is achieved in that the concentrated terminal of supplementing with money of a kind of intelligent electric energy meter, comprise LCD display interface circuit, key circuit, buzzer interface circuit, the memory circuitry that CPU, corresponding port with CPU link to each other and be the power circuit of each circuit supply, also comprise IC-card interface circuit, ESAM modular circuit and two groups of RS485 communication module interface circuits; The IC-card interface circuit is connected with CPU by ICREST, ICIO data pin, resetting pin, and the ESAM modular circuit directly is connected with CPU by data resetting pin SAMIO, SAMRST; Two groups of RS485 communication module interface circuits are connected with two groups of asynchronous serial communication mouths of CPU respectively, and CPU is by these two groups of asynchronous serial communication mouths communicating by letter of realization and intelligent electric energy meter and collector respectively.The IC-card interface circuit is finished and the subscriber card interface communication, and data message is sent into CPU; The ESAM modular circuit is finished exchanges data and reset operation, the various safety certification operations of encryption, deciphering and computing.
Also comprise a reset control circuit, described reset control circuit adopts power supply detection chip IMP809R, and links to each other with the MCLR pin of CPU, controls cpu reset when supply voltage is lower than 2.63V when detecting.Described intelligent electric energy meter is concentrated and is supplemented terminal with money, and it is characterized in that: RS485 communication module interface circuit comprises the RS485 interface chip, and is provided with optocoupler between asynchronous serial communication mouth corresponding on RS485 interface chip and the CPU.
The chip of above-mentioned CPU adopts PIC18F6621 or PIC18F6627.
Above-mentioned RS485 interface chip adopts MAX1487.
Above-mentioned in one group of RS485 communication module interface circuit of communicating by letter with intelligent electric energy meter, the A of RS485 interface chip end, B hold the thermistor of respectively connecting, and are provided with two-way transient state diode between A end, B end.
Above-mentioned key circuit comprises three buttons, realizes that respectively the scroll up of LCD display interface circuit shows, scroll down shows, affirmation is imported and supplemented with money to numeral.
The tut interface circuit comprises an active hummer, and this active hummer links to each other with the IO mouth of CPU, and also is provided with a triode between hummer and CPU.
Compared with prior art, advantage of the present utility model and beneficial effect are:
1, design has IC-card interface circuit, ESAM modular circuit, and the IC-card interface circuit is finished and the subscriber card interface communication, and the user only needs simple plug-in card operation, the card internal information can be sent into CPU and operate; The ESAM modular circuit is finished exchanges data and reset operation, the operation of the various safety certifications of encryption, deciphering and computing, various safe computings are carried out in the ESAM modular circuit, with the CPU program without any relation, guaranteed the security of system data.
2, design has two groups of RS485 communication module interface circuits, communicating by letter of realization and intelligent electric energy meter and collector respectively, and minimizing intermediate conveyor link greatly reduces the transmission fault problem, has improved the reliability of communication.
Be connected with intelligent electric energy meter by RS485 communication module interface circuit, upwards be connected with collector by RS485 communication module interface circuit; Can efficient real time monitor the communication data between collector and the electric energy meter, safely the data of collector and intelligent electric energy meter are transmitted, assurance system normal communication, carry out electrical isolation by optocoupler between RS485 communication module interface circuit and CPU, stable, CPU can read the intelligent electric energy meter data in real time and show by the LCD display interface circuit.
3, insert subscriber card by reading the user, charge in user's oneself the intelligent electric energy meter accurately, safely supplementing the electricity charge amount of money with money in the card; Be installed in sub-district or doorway, unit nearby, solved the user supplements inconvenient operation with money to intelligent electric energy meter problem; The intelligent electric energy meter that connects swiped the card supplement with money, the user also can carry out the power information inquiry by button or plug-in card at any time, and is easy to operate simple, safe and reliable.
Description of drawings
Fig. 1 is a hardware principle structured flowchart synoptic diagram of the present utility model.
Fig. 2 is that installation of the present utility model connects the topology diagram synoptic diagram.
Fig. 3 is the cpu circuit figure of the utility model embodiment.
Fig. 4 is the reset control circuit figure of the utility model embodiment.
Fig. 5 is the LCD display interface circuit figure of the utility model embodiment.
Fig. 6 is the LCD power-switching circuit figure of the utility model embodiment.
Fig. 7 executes the keystroke interface circuit diagram of example for the utility model.
Fig. 8 is the buzzer interface circuit diagram of the utility model embodiment.
Fig. 9 is the RS485 communication module interface circuit of the utility model embodiment.
ESAM modular circuit and the power circuit of Figure 10 the utility model embodiment.
Embodiment
The utility model is described in further detail below in conjunction with drawings and Examples.
Referring to Fig. 1 to Figure 10, the utility model comprises CPU, the LCD display interface circuit that corresponding port with CPU links to each other, key circuit, the sound interface circuit, memory circuitry, and be the power circuit of each circuit supply, also comprise the IC-card interface circuit, ESAM modular circuit and two groups of RS485 communication module interface circuits, the IC-card interface circuit is finished and the subscriber card interface communication, and data message sent into CPU, the ESAM modular circuit is finished exchanges data and reset operation, encrypt, the various safety certification operations of deciphering and computing, two groups of RS485 communication module interface circuits link to each other with two groups of asynchronous serial communication mouths of CPU respectively, CPU is by these two groups of asynchronous serial communication mouths communicating by letter of realization and intelligent electric energy meter and collector respectively, and the utility model is connected (referring to Fig. 2) with intelligent electric energy meter with collector.CPU is the core of system works, selects the single-chip microcomputer of high-speed cruising for use, and antijamming capability is good, program space capacity is convenient to the C programming greater than 64Kbytes, and rich interface is convenient to the function expansion, in the present embodiment, the chip of CPU adopts PIC18F6621, also can adopt PIC18F6627.
As shown in Figure 3, the CPU frequency of operation is selected 11.0592MHz, provides parallel port output to the LCD display interface circuit, use CPU RD0 ~ RD7 mouth, the control of demonstration is provided simultaneously and busyly judges signal pins, finish and show and send several logic controls; To ESAM modular circuit and IC-card interface circuit data line is provided, reset control line power control line and clock control line, guarantee to satisfy CPU can and ESAM modular circuit and IC-card interface circuit between satisfy the physical connection standard of ISO7816; Two independent USART interface is isolated conversion by RS485, uses with intelligent electric meter communication and the communication of remote collection device respectively; CPU and hummer are connected to a control line, owing to adopt active hummer, so CPU just provides level control sound.We adopt the E2 storage space of CPU inside data storage.
IC-card interface/ESAM circuit: the IC-card interface is finished and the subscriber card interface communication, because the smart card that we adopt, therefore design will be satisfied the ISO7816 related request, is provided with anti-attack protection circuit simultaneously, and the interface of ESAM module is consistent with the IC-card interface.Referring to Figure 10, ESAM piece interface circuit, wherein data resetting pin SAMIO, the SAMRST of ESAM module directly are connected with CPU, finish exchanges data and reset operation; MCUCLK is the clock of ESAM or the work of CPU card, and frequency is 4MHz.The ESAM module is finished the various safety certification operations of encryption, deciphering and computing, and the key that is kept at the inside is to read, and can only obtain the result of computing, also has the function of preserving data simultaneously.
Referring to Fig. 4, the utility model also comprises a reset control circuit, and described reset control circuit adopts power supply detection chip IMP809R, and links to each other with the MCLR pin of CPU, controls cpu reset when supply voltage is lower than 2.63V when detecting; Guarantee that CPU normally starts work.
Referring to Fig. 5, key circuit comprises three buttons of design, is KEY1, KEY2, KEY3, realizes that respectively the scroll up of LCD display interface circuit shows, scroll down shows, affirmation is imported and supplemented with money to numeral;
Referring to Fig. 6, the sound interface circuit comprises an active hummer, and this active hummer links to each other with the IO mouth of CPU, and also is provided with a triode Q1 between hummer and CPU; Owing to adopt active hummer, so CPU only just can control sound with providing level, and hummer is loud when the IO mouth that links to each other with hummer is high level, and hummer is sounded during for low level;
Referring to Fig. 7, RS485 communication module interface circuit comprises the RS485 interface chip, and design has optocoupler between asynchronous serial communication mouth corresponding on RS485 interface chip and the CPU; Described RS485 interface chip adopts MAX1487, in one group of RS485 communication module interface circuit of communicating by letter with intelligent electric energy meter, the A end of RS485 interface chip, B hold the thermistor of respectively connecting, and are respectively R46, R47, are provided with two-way transient state diode D8 between A end, B end; Form holding circuit between two-way transient state diode D8 and resistance R 46, R47, prevent interface overvoltage and electrostatic impact damage RS485 interface chip.
The design of system works power supply has communication working power DC12V and DC5V, main system working power DC5V and demonstration working power DC3.3V.Wherein communication working power is for isolating output.Referring to Figure 10.We have designed lightning protection circuit at power input.By voltage dependent resistor (VDR), prevent that surge current from entering system, destroy system stability work.
The utility model progress of work is: intelligence supplement with money terminal when normal idle circulation show each user's energy information, also can turn over the screen query display fast by button, supplementing terminal with money when intelligence has detected electric supply meter and need point out when supplementing with money, demonstration will enter the prompting display interface, enter normal idle cycles again and show when not having the user to be prompted.The user inserts and to purchase electricity card intelligence and supplement terminal with money and judging that card satisfies legitimacy and requires laggard access customer card query interface, if by " supplementing with money " key, intelligence is concentrated and to be supplemented terminal with money the user is purchased recharge amount in the electricity card, supplementing number of times with money transmits to intelligent electric meter by RS485 according to the associated safety operating process, intelligent electric meter receive data and judge legal after, and recharging result is returned intelligent concentrating supplement terminal with money, last intelligence is concentrated and is supplemented terminal demonstration recharging result with money, successful recharging will show this recharge amount, the ammeter total charge that adds up, supplementing with money gets nowhere supplements demonstration with money failure, and failure is supplemented in hummer sound prompting simultaneously with money.
Claims (8)
1. an intelligent electric energy meter is concentrated and is supplemented terminal with money, comprise LCD display interface circuit, key circuit, sound interface circuit, the memory circuitry that CPU, corresponding port with CPU link to each other and be the power circuit of each circuit supply, it is characterized in that: also comprise IC-card interface circuit, ESAM modular circuit and two groups of RS485 communication module interface circuits; Described IC-card interface circuit is connected with CPU by ICREST, ICIO data pin, resetting pin, and the ESAM modular circuit directly is connected with CPU by data pin, resetting pin SAMIO, SAMRST; Described two groups of RS485 communication module interface circuits are connected with two groups of asynchronous serial communication mouths of CPU respectively, and CPU is by these two groups of asynchronous serial communication mouths communicating by letter of realization and intelligent electric energy meter and collector respectively.
2. intelligent electric energy meter according to claim 1 is concentrated and is supplemented terminal with money, it is characterized in that: also comprise a reset control circuit, described reset control circuit adopts power supply detection chip IMP809R, and link to each other with the MCLR pin of CPU, control cpu reset when supply voltage is lower than 2.63V when detecting.
3. intelligent electric energy meter according to claim 1 is concentrated and is supplemented terminal with money, and it is characterized in that: RS485 communication module interface circuit comprises the RS485 interface chip, and is provided with optocoupler between asynchronous serial communication mouth corresponding on RS485 interface chip and the CPU.
4. intelligent electric energy meter according to claim 1 is concentrated and supplemented terminal with money, it is characterized in that: the chip of described CPU adopts PIC18F6621 or PIC18F6627.
5. intelligent electric energy meter according to claim 4 is concentrated and supplemented terminal with money, it is characterized in that: described RS485 interface chip adopts MAX1487.
6. intelligent electric energy meter according to claim 1 is concentrated and is supplemented terminal with money, it is characterized in that: described in one group of RS485 communication module interface circuit of communicating by letter with intelligent electric energy meter, the A end of RS485 interface chip, B hold the thermistor of respectively connecting, and are provided with two-way transient state diode between A end, B end.
7. intelligent electric energy meter according to claim 1 is concentrated and is supplemented terminal with money, and it is characterized in that: described key circuit comprises three buttons, realizes that respectively the scroll up of LCD display interface circuit shows, scroll down shows, affirmation is imported and supplemented with money to numeral.
8. intelligent electric energy meter according to claim 1 is concentrated and is supplemented terminal with money, and it is characterized in that: described sound interface circuit comprises an active hummer, and this active hummer links to each other with the IO mouth of CPU, and also is provided with a triode between hummer and CPU.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120016736XU CN201965694U (en) | 2011-01-19 | 2011-01-19 | Intelligent energy meter centralized charging terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120016736XU CN201965694U (en) | 2011-01-19 | 2011-01-19 | Intelligent energy meter centralized charging terminal |
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| Publication Number | Publication Date |
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| CN201965694U true CN201965694U (en) | 2011-09-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201120016736XU Expired - Lifetime CN201965694U (en) | 2011-01-19 | 2011-01-19 | Intelligent energy meter centralized charging terminal |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102074076A (en) * | 2011-01-19 | 2011-05-25 | 四川电力科学研究院 | Intelligent electric meter centralized recharging terminal and control method thereof |
| CN103033655A (en) * | 2011-10-08 | 2013-04-10 | 江阴长仪集团有限公司 | Intelligent electric energy meter with accurate timing module |
-
2011
- 2011-01-19 CN CN201120016736XU patent/CN201965694U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102074076A (en) * | 2011-01-19 | 2011-05-25 | 四川电力科学研究院 | Intelligent electric meter centralized recharging terminal and control method thereof |
| WO2012097489A1 (en) * | 2011-01-19 | 2012-07-26 | 四川电力科学研究院 | Intelligent electric meter centralized recharging terminal and control method thereof |
| CN102074076B (en) * | 2011-01-19 | 2013-10-16 | 四川电力科学研究院 | Intelligent electric meter centralized recharging terminal and control method thereof |
| CN103033655A (en) * | 2011-10-08 | 2013-04-10 | 江阴长仪集团有限公司 | Intelligent electric energy meter with accurate timing module |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20110907 Effective date of abandoning: 20131016 |
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| RGAV | Abandon patent right to avoid regrant |