CN111175554A - Three-phase fee-control intelligent electric meter with code scanning transaction function - Google Patents
Three-phase fee-control intelligent electric meter with code scanning transaction function Download PDFInfo
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- CN111175554A CN111175554A CN202010151302.4A CN202010151302A CN111175554A CN 111175554 A CN111175554 A CN 111175554A CN 202010151302 A CN202010151302 A CN 202010151302A CN 111175554 A CN111175554 A CN 111175554A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R11/00—Electromechanical arrangements for measuring time integral of electric power or current, e.g. of consumption
- G01R11/56—Special tariff meters
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R11/00—Electromechanical arrangements for measuring time integral of electric power or current, e.g. of consumption
- G01R11/02—Constructional details
- G01R11/24—Arrangements for avoiding or indicating fraudulent use
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- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G06Q20/00—Payment architectures, schemes or protocols
- G06Q20/30—Payment architectures, schemes or protocols characterised by the use of specific devices or networks
- G06Q20/32—Payment architectures, schemes or protocols characterised by the use of specific devices or networks using wireless devices
- G06Q20/327—Short range or proximity payments by means of M-devices
- G06Q20/3276—Short range or proximity payments by means of M-devices using a pictured code, e.g. barcode or QR-code, being read by the M-device
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- G—PHYSICS
- G07—CHECKING-DEVICES
- G07F—COIN-FREED OR LIKE APPARATUS
- G07F15/00—Coin-freed apparatus with meter-controlled dispensing of liquid, gas or electricity
- G07F15/06—Coin-freed apparatus with meter-controlled dispensing of liquid, gas or electricity with means for prepaying basic charges, e.g. rent for meters
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Abstract
本发明公开了一种带扫码交易功能的三相费控智能电表，所述电表包括外壳、天线、显示屏、指示灯、CPU卡槽、按键和接线端子，所述天线位于外壳右上方，显示屏位于外壳的上部，显示屏下方位置还设置有一排3个指示灯，按键位于外壳中部，接线端子位于外壳下方，所述按键包括10个数字按键、小数点按钮、退格键、四个方向按钮、确认按钮、取消按钮。所述电表的内部结构包括ARM处理器、电源单元、时钟单元、计量单元、存储单元、报警单元、显示屏控制单元、4G通信模块单元、继电器控制单元、按键输入单元、CPU卡单元、嵌入式安全控制单元和防窃电单元。该智能电表具有功能丰富、智能化程度高等优点。
The invention discloses a three-phase charge-controlled smart meter with a scanning code transaction function. The meter includes a casing, an antenna, a display screen, an indicator light, a CPU card slot, a button and a connection terminal, and the antenna is located at the upper right of the casing. The display screen is located on the upper part of the casing, and there is a row of 3 indicator lights at the bottom of the display screen. The buttons are located in the middle of the casing, and the wiring terminals are located under the casing. The buttons include 10 numeric buttons, decimal point button, backspace key, four directions button, confirm button, cancel button. The internal structure of the electric meter includes an ARM processor, a power supply unit, a clock unit, a metering unit, a storage unit, an alarm unit, a display screen control unit, a 4G communication module unit, a relay control unit, a key input unit, a CPU card unit, an embedded Security control unit and anti-tamper unit. The smart meter has the advantages of rich functions and high intelligence.
Description
Technical Field
The invention relates to the field of electric energy measurement in the electrical instrument industry, in particular to a three-phase fee-control intelligent electric meter with a code scanning transaction function.
Background
The electric meter is used as a special metering device for the electricity consumption of an electric energy user, and is developed from an induction type electric meter to a full electronic type electric meter, wherein the full electronic type electric meter is functionally developed in the development stages of a common electronic type electric energy meter, a multi-rate electric energy meter, a prepayment electric energy meter, an intelligent electric energy meter and the like. The existing electric energy meter has certain disadvantages: the function is single, and the precision is low, and the data is copied and is read the mode inconvenient, uses inconveniently, and intelligent degree is not high.
Accordingly, the prior art is yet to be improved and developed.
Disclosure of Invention
The invention aims to solve the technical problems that in order to overcome the defects in the prior art, the three-phase fee-control intelligent electric meter with the code scanning transaction function is provided, and aims to solve the problems that the existing function is single, the use is inconvenient, and the intelligence degree is not high.
The technical scheme adopted by the invention for solving the technical problem is as follows:
the utility model provides a sign indicating number transaction function's three-phase fee accuse smart electric meter is swept in area, as shown in the figure, the ammeter includes shell, antenna, display screen, CPU draw-in groove, button and binding post, the display screen is located the upper portion of shell, and display screen below position still is provided with one row of pilot lamp, binding post is located the shell below, the button includes 10 digit button, decimal point button, move back check key, four directional button, confirm button, cancel button, the pilot lamp from left to right includes pulse indicator, tripping indicator and trouble lamp.
The internal circuit structure of the shell comprises an ARM processor, a metering unit, a storage unit, a power supply unit, an alarm unit, a 4G communication module unit, a relay control unit, a CPU card unit, a clock unit, a key input unit, a display screen control unit, an embedded safety control unit and an electricity larceny prevention unit, the output ends of the metering unit, the power supply unit, the CPU card unit, the clock unit and the key input unit are unidirectionally and electrically connected with the output end of the ARM processor, the storage unit, the 4G communication module unit, the relay control unit, the embedded safety control unit and the electricity larceny prevention unit are in bidirectional electric connection with the ARM processor, the input ends of the display screen control unit and the alarm unit are unidirectionally and electrically connected with the output end of the ARM processor, the output end of the display screen control unit is in one-way electric connection with the output end of the display screen, and the input end of the key input unit is in one-way electric connection with the output end of the key.
Preferably, the input one-way electricity of measurement unit is connected with three-phase current sampling unit and three-phase voltage sampling unit's output, the measurement unit comprises gauge chip RN2026 and peripheral circuit, three-phase voltage sampling unit adopts the divider resistance network, three-phase current sampling unit includes copper manganese shunt and current transformer, the measurement unit has the function of timesharing measurement, can timesharing measure the electric quantity of three-phase point, peak, flat, valley period.
Preferably, the power supply unit adopts bridge rectification and a three-terminal voltage stabilizing device to obtain a working power supply of the circuit from the three-phase alternating current, the working power supply can be ensured to normally work when any two-phase alternating current fails, and a super capacitor and a lithium battery are used as a backup power supply.
Preferably, alarm unit's output and the one-way electricity of the input of pilot lamp and display screen are connected, alarm unit can realize status display and fault alarm, and status and fault information come from ARM treater and measurement chip, and the leftmost pulse indicator twinkles when having the electric quantity to consume, and the trip indicator in the middle of when the relay trips is always bright, and the rightmost alarm lamp is always bright when having other troubles to can follow liquid crystal display and obtain the fault code, the display screen is high resolution LCD liquid crystal display, can show data such as electric quantity, voltage, electric current, power factor, and the accessible 4G communication unit realizes checking meter simultaneously.
Preferably, the input end of the CPU card unit is in one-way electric connection with the output end of the CPU card slot, the CPU card can be inserted into the CPU card slot, the CPU card unit senses the insertion of the CPU card to complete connection, authentication and data communication between the intelligent ammeter and the CPU card, time, date, current consumed electricity, current deducted fee and user balance can be displayed on the display screen, when the CPU card is inserted into the CPU card slot and is confirmed to be correct, a user can operate through the keyboard, electricity purchasing is completed by inputting electricity purchasing amount and confirming the electricity purchasing amount, a corresponding payment code can be displayed on the display screen, the electricity purchasing can be completed by scanning the payment code through a mobile phone, and the CPU card can be automatically popped out from the CPU card slot after completing the electricity purchasing.
Preferably, the input end of the 4G communication unit is electrically connected with the output end of the antenna, and the 4G communication unit realizes networking of the electric energy meter and a remote electricity selling system of an electric power department.
Preferably, the relay control unit is electrically connected with a relay through an RAM processor, the relay control unit can automatically switch off and power off when a user is in charge or overloaded, the remote electricity selling system sends a switching-off command when the user is in charge, the alarm unit lights the switching-off indicating lamp after the ammeter successfully receives the switching-off command, the relay control unit drives the relay to switch off, the switching-off indicating lamp does not flicker and keeps displaying after the switching-off is successful, the remote electricity selling system sends a closing-allowing command again after the user charges, and the display unit switches off the switching-off indicating lamp and drives the relay to switch on when the ammeter successfully receives the command.
Preferably, the storage unit adopts an EEPROM (electrically erasable programmable read-only memory), so that electric energy data can be prevented from disappearing after accidental power failure, the clock unit is a clock circuit with a temperature compensation function, the output frequency is Hz, and the clock precision is less than or equal to 0.4 s/.
Preferably, the embedded security control unit adopts an embedded security module, the embedded security module comprises a kernel algorithm unit, the kernel algorithm unit is electrically connected with an algorithm coprocessor, a random number generator, an RAM memory and a timer in a bidirectional mode, the kernel algorithm unit can adopt one of a DES algorithm or a DES algorithm, the timer determines and records the time when the embedded security control unit completes encryption, a public key, a private key and S box data are stored in the RAM memory, the random number generator is used for generating a single secondary key, and the algorithm coprocessor completes the calculation process of the DES algorithm and is used for preventing an unauthorized person from operating, so that the security of data transmission is guaranteed.
Preferably, the electricity larceny prevention unit comprises a current sampling loop, the ARM processor reads the electricity larceny prevention unit regularly, current sampling values of a live wire and a zero line in the electricity larceny prevention unit are compared, if the difference value of the two current sampling values exceeds a set threshold value, the ARM processor selects a larger current channel in the two currents as a current electric quantity metering channel, and meanwhile, the alarm unit outputs alarm signals to the indicator lamp and the display screen to indicate that an electricity larceny state occurs.
The three-phase fee-control intelligent electric meter with the code scanning transaction function provided by the invention has the following beneficial technical effects:
1. the charge control function and the wireless public network remote meter reading can be realized, and the electric energy metering and settlement requirements are met.
2. An embedded security control unit (ESAM chip) is adopted, and the data security is high.
3. The high-resolution LCD can display the data of electric quantity, voltage, current and power factor, etc. and can display the payment code to make payment.
4. The electric energy quality monitoring alarm and the alarm of excessively low working power supply voltage of the electric meter can be realized, the management is convenient, and the running reliability of the electric meter is improved.
5. Accessible 4G communication unit and main website are connected, by main website charge control software generation payment code, the user accessible sweeps a yard payment code and directly accomplishes the electricity purchase payment, has greatly improved the convenience that the ammeter used.
Drawings
FIG. 1 is a schematic view of the present invention;
FIG. 2 is a block diagram of a smart meter system according to the present invention;
FIG. 3 is a block diagram of an embedded security control unit system according to the present invention.
In the figure: the system comprises a shell 1, an antenna 2, a display screen 3, a CPU card slot 4, keys 5, a terminal 6, an indicator light 7, an ARM processor 8, a metering unit 9, a storage unit 10, a power supply unit 11, an alarm unit 12, a communication module unit 134G, a relay control unit 14, a CPU card unit 15, a clock unit 16, a key input unit 17, a display screen control unit 18, an embedded safety control unit 19 and an electricity larceny prevention unit 20.
Detailed Description
The invention provides a three-phase fee-control intelligent electric meter with a code scanning transaction function, and in order to make the purpose, technical scheme and advantages of the invention clearer and clearer, the invention is further described in detail by referring to the attached drawings and by taking implementation examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in fig. 1-3, the three-phase fee-control intelligent electric meter with the code scanning transaction function comprises a shell 1, an antenna 2, a display screen 3, a CPU card slot 4, keys 5 and a wiring terminal 6, wherein the display screen 3 is positioned on the upper part of the shell 1, a row of indicator lamps 7 are further arranged below the display screen 3, the wiring terminal 6 is positioned below the shell 1, the keys 5 comprise 10 digital keys, a decimal point button, a backspace key, four direction buttons, a confirmation button and a cancel button, and the indicator lamps 7 comprise a pulse indicator lamp, a trip indicator lamp and a fault indicator lamp from left to right.
The internal circuit structure of the shell 1 comprises an ARM processor 8, a metering unit 9, a storage unit 10, a power supply unit 11, an alarm unit 12, a 4G communication module unit 13, a relay control unit 14, a CPU card unit 15, a clock unit 16, a key input unit 17, a display screen control unit 18, an embedded safety control unit 19 and an electricity larceny prevention unit 20, wherein the output ends of the metering unit 9, the power supply unit 11, the CPU card unit 15, the clock unit 16 and the key input unit 17 are unidirectionally and electrically connected with the output end of the ARM processor 8, the storage unit 10, the 4G communication module unit 13, the relay control unit 14, the embedded safety control unit 19 and the electricity larceny prevention unit 20 are bidirectionally and electrically connected with the ARM processor 8, the input ends of the display screen control unit 18 and the alarm unit 12 are unidirectionally and electrically connected with the output end of the ARM processor 8, the output end of the display screen control unit 18 is unidirectionally, the input end of the key input unit 17 is unidirectionally electrically connected with the output end of the key 5, and the ARM processor 8 may employ a MAC57D54 chip.
The input end of the metering unit 9 is unidirectionally and electrically connected with the output ends of the three-phase current sampling unit 9.1 and the three-phase voltage sampling unit 9.2, the metering unit 9 consists of a metering chip RN2026 and a peripheral circuit, the three-phase voltage sampling unit 9.2 adopts a voltage dividing resistor network, the three-phase current sampling unit 9.1 comprises a copper-manganese shunt and a current transformer, and the metering unit has a time-sharing metering function and can meter the electric quantity of three-phase points, peaks, levels and valleys in time-sharing mode.
The power supply unit 11 obtains a working power supply of a circuit from the three-phase alternating current by adopting bridge rectification and a three-terminal voltage stabilizing device, normal work of the working power supply can be guaranteed when any two-phase alternating current fails, and a super capacitor and a lithium battery are used as a backup power supply.
The output of alarm unit 12 is connected with the one-way electricity of the input of pilot lamp 7 and display screen 3, alarm unit 12 can realize status display and fault alarm, status and fault information come from ARM treater 8 and measurement chip, the leftmost pulse pilot lamp glimmers when having the electric quantity to consume, the trip pilot lamp in the middle of when the relay trips is always bright, the rightmost alarm lamp is always bright when having other faults, and can obtain the fault code from liquid crystal display, display screen 3 is high resolution LCD liquid crystal display, can show data such as electric quantity, voltage, electric current, power factor, accessible 4G communication unit 13 realizes checking meter simultaneously.
The input end of the CPU card unit 15 is in one-way electric connection with the output end of the CPU card slot 4, a CPU card can be inserted into the CPU card slot 4, the CPU card unit 15 senses the insertion of the CPU card, the connection between the intelligent electricity meter and the CPU card is completed, authentication and data communication are realized, time, date, current consumed electricity, current deducted fee and user balance can be displayed on the display screen 3, when the CPU card is inserted into the CPU card slot 4 and is confirmed to be correct, a user can operate through a keyboard and purchase electricity, after the electricity purchasing amount is input and confirmed, a corresponding payment code can be displayed on the display screen 3, the electricity purchasing can be completed by scanning the payment code through a mobile phone, and after the electricity purchasing is completed, the CPU card can be automatically popped out from the CPU card slot 4.
The input end of the 4G communication unit 13 is electrically connected with the output end of the antenna 2, and the 4G communication unit 13 realizes the networking of the electric energy meter and a remote electricity selling system of an electric power department.
The relay control unit 14 is electrically connected with a relay through the RAM processor 8, the relay control unit 14 can automatically switch off and power off when a user is in charge of arrearage or overloaded, when the user is in charge of arrearage, a remote electricity selling system sends a switching-off command, when an electricity meter successfully receives the switching-off command, the alarm unit 12 lights the switching-off indicating lamp 7, the relay control unit 14 drives the relay to switch off, after the switching-off is successful, the switching-off indicating lamp 7 does not flicker and keeps displaying, when the user charges, the remote electricity selling system sends a closing-allowing command, and after the electricity meter successfully receives the command, the switching-off indicating lamp 7 of the display unit is turned off, and the relay control unit 14 drives the relay to switch on.
The storage unit 10 adopts an EEPROM memory, can prevent electric energy data from disappearing after accidental power failure, and the clock unit is a clock circuit with a temperature compensation function, the output frequency is 1Hz, and the clock precision is less than or equal to 0.4 s/d.
The embedded security control unit 19 adopts an embedded security module, the embedded security module comprises a kernel algorithm unit, the kernel algorithm unit is electrically connected with an algorithm coprocessor 19.1, a random number generator 19.2, an RAM memory 19.3 and a timer 19.4 in a bidirectional mode, the kernel algorithm unit can adopt one of a DES algorithm or a 3DES algorithm, the timer 19.4 determines and records the time when the embedded security control unit completes encryption, a public key, a private key and S box data are stored in the RAM memory 19.3, the random number generator 19.2 is used for generating a single secondary key, and the algorithm coprocessor completes the calculation process of the DES algorithm and is used for preventing an unauthorized person from operating so as to guarantee the security of data transmission.
The electricity larceny prevention unit 20 comprises a current sampling loop, the ARM processor 8 reads the electricity larceny prevention unit 20 regularly, current sampling values of a live wire and a zero line in the electricity larceny prevention unit 20 are compared, if the difference value of the two current sampling values exceeds a set threshold value, the ARM processor 8 selects a larger current channel in the two currents as a current electric quantity metering channel, and meanwhile, the alarm unit 12 outputs alarm signals to the indicator light 7 and the display screen 3 to indicate that an electricity larceny state occurs.
The working principle is as follows: the alarm unit 12 can realize status display and fault alarm, status and fault information come from the ARM processor 8 and the metering chip, the leftmost pulse indicator light flickers when the electricity consumption is available, the middle trip indicator light is always on when the relay trips, the rightmost alarm light is always on when other faults exist, and fault codes can be obtained from the liquid crystal display screen, the display screen 3 is a high-resolution LCD liquid crystal display screen and can display data such as electricity quantity, voltage, current, power factor and the like, meanwhile, the meter reading can be realized through the 4G communication unit 13, a CPU card can be inserted into the CPU card slot 4, the CPU card unit 15 senses the insertion of the CPU card to complete the connection, authentication and data communication between the intelligent electricity meter and the CPU card, the time, date, the current consumed electricity quantity, the current fee deduction and the user balance can be displayed on the display screen 3, and when the CPU card is inserted into the CPU card slot 4 and is confirmed to be correct, the user can, the method comprises the steps of purchasing electricity, inputting the amount of purchased electricity and confirming the amount, displaying a corresponding payment code on a display screen 3, scanning the payment code through a mobile phone to pay, and completing the electricity purchasing, wherein a CPU card can be automatically popped out from a CPU card slot 4 after the payment is completed, a relay control unit 14 can automatically open a brake and cut off the power when a user is in charge of arrearage, a remote electricity selling system sends a brake opening command when the user is in charge of arrearage, an alarm unit 12 lights an 'open brake' indicator lamp 7 after an electricity meter successfully receives the brake opening command, the relay control unit 14 drives a relay to open the brake, the 'open brake' indicator lamp 7 does not flicker and keeps displaying after the brake opening command is successfully received by the user, the remote electricity selling system sends a command for allowing the closing again after the user charges the electricity, the display unit 'open brake' indicator lamp 7 is turned off at the moment, and the relay control unit 14 drives.
The control mode of the invention is automatically controlled by the core controller, the control circuit of the singlechip can be realized by simple programming of technicians in the field, and the supply of the power supply also belongs to the common knowledge in the field.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising a reference structure" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010151302.4A CN111175554A (en) | 2020-03-06 | 2020-03-06 | Three-phase fee-control intelligent electric meter with code scanning transaction function |
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| CN202010151302.4A CN111175554A (en) | 2020-03-06 | 2020-03-06 | Three-phase fee-control intelligent electric meter with code scanning transaction function |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114938150A (en) * | 2022-06-27 | 2022-08-23 | 深圳市中创电测技术有限公司 | Measurement switch module circuit |
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| CN114938150A (en) * | 2022-06-27 | 2022-08-23 | 深圳市中创电测技术有限公司 | Measurement switch module circuit |
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Application publication date: 20200519 |
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| RJ01 | Rejection of invention patent application after publication |