CN101393667A - Pre-payment management device for intelligent IC card - Google Patents
Pre-payment management device for intelligent IC card Download PDFInfo
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- CN101393667A CN101393667A CNA2008100463050A CN200810046305A CN101393667A CN 101393667 A CN101393667 A CN 101393667A CN A2008100463050 A CNA2008100463050 A CN A2008100463050A CN 200810046305 A CN200810046305 A CN 200810046305A CN 101393667 A CN101393667 A CN 101393667A
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Abstract
The invention discloses an intelligent IC card prepayment management device which is used for solving the problems of prepayment management, control and monitoring of key customers of electricity. The device mainly comprises a casing, and a power supply, a 32 bit embedded CPU, a data storage circuit, an IC card communication circuit, a GSM/GPRS/CDMA module driving circuit, an Ethernet communication circuit, a 485 data acquisition circuit, a tripping control circuit, a pulse acquisition circuit, a state quantity acquisition circuit, an LCD display circuit, a keyboard control circuit and an acoustooptic warning circuit which are arranged inside the casing. Through the device, the power prepayment based on the IC card can be realized, and meanwhile, the device supports the acquisition of different types of data, supports functions such as real-time analysis and storage to related data, and supports the transmission of real-time field data through networks such as GSM/GPRS and CDMA, thereby avoiding the problem that the condition of a field electricity meter can not be known in time by the traditional prepayment method for the key customers of electricity.
Description
Technical field
The present invention relates to be specifically related to a kind of pre-payment management device for intelligent IC card for the distribution technique field.
Background technology
Current; each client of Utilities Electric Co. owing electricity charges of China, transgression for using electricity phenomenon are more serious; how to adopt the management method of science and the problem that means solve present existence; effectively reduce the business risk of Utilities Electric Co.; protection enterprise legitimate interests; for the electric utility sustainable development creates favorable conditions, be pendulum presses for solution in face of us problem.Traditional electric power prepaid device is merely able to can't realize long-range monitoring and control by IC-card electric energy meter field control user power utilization amount situation that this has increased many workloads for power supply enterprise.
Concerning power supply department, reclaim electricity charge difficulty is a bottleneck of puzzlement power department sustainable and stable development always, and current simple IC-card payment system can not in time obtain on-the-spot real time data, to making power department can not in the very first time, obtain in-situ data, be difficult to the choice of the science of making to forfeiting electricity.
Summary of the invention
Technical matters to be solved by this invention is, how a kind of pre-payment management device for intelligent IC card is provided, this pre-payment management device and the parallel running of marketing metering device, adopt IC-card as purchasing charge carrier, after the user carries IC-card and purchases electricity to power supply department, swipe the card to this device place and to supplement with money, device is according to the electric weight that the user purchases and the gauging table electric weight electric control of marketing; This device adopts wireless telecommunications means such as GSM/GPRS/CDMA field data to be reported and submitted main website platform, the choice of power supply power segment analysis when anxious.
To achieve the above object of the invention, the technical solution adopted in the present invention is: a kind of pre-payment management device for intelligent IC card is provided, it is characterized in that, described pre-payment management device for intelligent IC card comprises:
Metering circuit, electronic switch and the sample circuit formed by voltage transformer (VT), current transformer, resistor network and AC sampling chip, its input end is by 1 threephase current transformer and 3 measurement loop and electrical network couplings that single-phase potential transformer is formed, and described AC sampling chip links to each other with host CPU by SPI communication interface or serial ports;
Control loop, form by host CPU, single-chip microcomputer and quantity of state Acquisition Circuit, the signal input part of described single-chip microcomputer links to each other with the output terminal of quantity of state Acquisition Circuit, the control output end of described single-chip microcomputer links to each other with the input end of control circuit, the transmission mouth of described host CPU serial ports and the receiving port of microcontroller serial port link to each other, and the transmission mouth of the receiving port of host CPU serial ports and microcontroller serial port links to each other; Described quantity of state Acquisition Circuit is used for the control relay state of a control, the closed-loop control of implement device;
Actuating circuit, its input end links to each other with the control pin of described single-chip microcomputer by 6 light lotus roots, is used for realizing the electrical isolation of control circuit and control loop; Triode links to each other with the light lotus root, is used to amplify the electric current that drives relay coil; Diode is in parallel with relay coil, constitutes the relay coil freewheeling circuit;
The pulse collection loop is made up of host CPU, single-chip microcomputer, pulse acquisition circuit, is used for acquisition pulse electric energy meter electric weight; Wherein the signal input part of single-chip microcomputer links to each other with the signal output part of pulse acquisition circuit;
The GPRS/GSM wireless communication loop is made up of host CPU, GPRS/GSM communication module, SIM card seat, not gate chip, light emitting diode and radio-frequency antenna; Wherein the GPRS/GSM communication module is connected with host CPU by serial ports, links to each other with the SIM card seat by spi bus, links to each other with radio-frequency antenna by the RF concentric cable;
485 bus circuits are made up of 485 chips, light lotus root, dc conversion modules, bilateral diode and common mode inductance; Wherein the dc conversion modules input end links to each other with the power supply main system, and output terminal links to each other with 485 bus circuits, for 485 bus circuits provide the 5V power supply and isolate with the main system power supply; Wherein an end of bilateral diode is received respectively on 485 differential bus, and the other end inserts the earth lead terminal; Common mode inductance seals in 485 differential bus, suppresses common mode interference; This circuit input end links to each other with the transmission pin of No. 1 serial ports of host CPU by the light lotus root, and output terminal links to each other with the reception pin of No. 1 serial ports of host CPU by the light lotus root;
Radio frequency communications circuitry, form by radio frequency chip FM1702SL circuit and PCB antenna, radio frequency chip FM1702SL circuit links to each other with host CPU by spi bus, host CPU links to each other with No. 12 pins of radio frequency chip FM1702SL circuit with the input port of the common I/O mouth simulation of A7 spi bus, delivery outlet with the common I/O mouth simulation of A12 spi bus links to each other with No. 14 pins of radio frequency chip FM1702SL circuit, clock cable with the common I/O mouth simulation of A24 spi bus links to each other with No. 13 pins of radio frequency chip FM1702SL circuit, chip selection signal line with the common I/O mouth simulation of A20 spi bus links to each other with No. 15 pins of radio frequency chip FM1702SL circuit, links to each other with No. 23 pins of radio frequency chip FM1702SL circuit with the common I/O mouth of A22 analog reset delivery outlet; TX1, the TX2 of radio frequency chip FM1702SL circuit, RX link to each other with PCB ring Shape antenna circuit, form the loop that transmits and receives of radio frequency communications circuitry; Wherein the artificial circuit part electric power system of radio frequency communications circuitry and digital circuit electric power system are isolated by inductance;
The infrared communication circuit is made up of serial expanded circuit, infrared reception and infrared emission circuit, is used for the local parameter setting; Wherein serial expanded circuit is made up of chip TL16C550 and peripheral circuit thereof, and the data line of chip TL16C550 is connected with data line with the address wire of address wire with host CPU; The read-write control signal input pin of chip TL16C550 links to each other with the read-write control signal output pin of host CPU, and the serial ports of chip TL16C550 sends terminal and links to each other with the infrared emission circuit, and the serial ports of chip TL16C550 receives terminal and links to each other with infrared receiving circuit; The infrared emission circuit adopts a Sheffer stroke gate chip and two infrared transmitting tubes to form;
Ethernet interface circuit comprises Ethernet chip, bus driver chip and bridge, is used for local debugging; Wherein the data of Ethernet chip link to each other with the data and address bus of host CPU by bus driver chip isolation back with the address wire bus, and the data line bus adopts 16 position datawires; Wherein the bus driver chip is mainly kept apart the equipment on the data and address bus, prevents bus collision.
In sum, pre-payment management device for intelligent IC card provided by the present invention and the parallel running of marketing metering device, adopt IC-card as purchasing charge carrier, after the user carries IC-card and purchases electricity to power supply department, swipe the card to this device place and to supplement with money, device is according to the electric weight that the user purchases and the gauging table electric weight electric control of marketing; This device adopts wireless telecommunications means such as GSM/GPRS/CDMA field data to be reported and submitted main website platform, the choice of power supply power segment analysis when anxious.Can support trip remotely operation, so both control user power utilization under the situation that can break down at the scene, also under the situation about can use electricity in off-peak hours to user's power cuts to limit consumption.Can realize based on the IC-card electric power prepaid, this device is supported the collection of polytype data simultaneously, functions such as real-time analysis, storage are carried out in support to related data, real data when supporting by Network Transmission such as GSM/GPRS, CDMA scene, thus avoided conventional electric power big customer's prepayment mode can't in time understand the problem of on-the-spot ammeter situation.
Description of drawings
Fig. 1 is the functional module connection layout of pre-payment management device for intelligent IC card provided by the present invention;
Fig. 2 is the control loop circuit diagram;
Fig. 3 is a GPRS/GSM wireless communication loop circuit diagram;
Fig. 4 is radio frequency communications circuitry figure;
Fig. 5 (a) is serial expanded circuit figure;
Fig. 5 (b) is the address wire of chip 74HC245 and the connection layout of data line;
Fig. 5 (c) is the infrared emission circuit diagram;
Fig. 6 (a) is the circuit diagram of Ethernet chip RTL8019AL;
Fig. 6 (b) is the connection layout of bus driver chip 74HC245 low data line;
Fig. 6 (c) is the connection layout of bus driver chip 74HC245 high position data line;
Fig. 6 (d) is the connection layout of bus driver chip 74HC245 address wire.
Embodiment
Below in conjunction with accompanying drawing embodiments of the present invention are described in detail.
Pre-payment management device for intelligent IC card provided by the present invention mainly is made up of the power supply of housing and enclosure interior, 32 embedded type CPUs, data storage circuitry, IC-card telecommunication circuit, GSM/GPRS/CDMA module drive circuit, ethernet communication circuit, 485 data acquisition circuits, trip control circuit, pulse acquisition circuit, quantity of state Acquisition Circuit, LCD display circuit, keyboard control circuit, sound light alarming circuits etc.
As shown in the figure, a kind of pre-payment management device for intelligent IC card comprises:
Metering circuit, electronic switch and the sample circuit formed by voltage transformer (VT), current transformer, resistor network and AC sampling chip, its input end is by 1 threephase current transformer and 3 measurement loop and electrical network couplings that voltage transformer (VT) is formed, and described AC sampling chip links to each other with host CPU by SPI communication interface or serial ports;
Control loop, form by host CPU, single-chip microcomputer and quantity of state Acquisition Circuit, the signal input part of described single-chip microcomputer links to each other with the output terminal of quantity of state Acquisition Circuit, the control output end of described single-chip microcomputer links to each other with the input end of control circuit, the transmission mouth of described host CPU serial ports and the receiving port of microcontroller serial port link to each other, and the transmission mouth of the receiving port of host CPU serial ports and microcontroller serial port links to each other;
Actuating circuit, its input end links to each other with the control pin of described single-chip microcomputer by 6 light lotus roots, is used for realizing the electrical isolation of control circuit and control loop; Triode links to each other with the light lotus root, is used to amplify the electric current that drives relay coil; Diode is in parallel with relay coil, constitutes the relay coil freewheeling circuit;
The pulse collection loop is made up of host CPU, single-chip microcomputer, pulse acquisition circuit, and wherein the signal input part of single-chip microcomputer links to each other with the signal output part of pulse acquisition circuit;
The GPRS/GSM wireless communication loop is made up of host CPU, GPRS/GSM communication module, SIM card seat, not gate chip, light emitting diode and radio-frequency antenna; Wherein the GPRS/GSM communication module is connected with host CPU by serial ports, links to each other with the SIM card seat by spi bus, links to each other with radio-frequency antenna by the RF concentric cable;
485 bus circuits are made up of 485 chips, light lotus root, dc conversion modules, bilateral diode and common mode inductance; Wherein the dc conversion modules input end links to each other with the power supply main system, and output terminal links to each other with 485 bus circuits, for 485 bus circuits provide the 5V power supply and isolate with the main system power supply; Wherein an end of bilateral diode is received respectively on 485 differential bus, and the other end inserts the earth lead terminal; Common mode inductance seals in 485 differential bus, suppresses common mode interference; This circuit input end links to each other with the transmission pin of No. 1 serial ports of host CPU by the light lotus root, and output terminal links to each other with the reception pin of No. 1 serial ports of host CPU by the light lotus root;
Radio frequency communications circuitry, form by radio frequency chip FM1702SL circuit and PCB antenna, radio frequency chip links to each other with host CPU by spi bus, host CPU links to each other with No. 12 pins of radio frequency chip FM1702SL circuit with the input port of the common I/O mouth simulation of A7 spi bus, delivery outlet with the common I/O mouth simulation of A12 spi bus links to each other with No. 14 pins of radio frequency chip FM1702SL circuit, clock cable with the common I/O mouth simulation of A24 spi bus links to each other with No. 13 pins of radio frequency chip FM1702SL circuit, chip selection signal line with the common I/O mouth simulation of A20 spi bus links to each other with No. 15 pins of radio frequency chip FM1702SL circuit, links to each other with No. 23 pins of radio frequency chip FM1702SL circuit with the common I/O mouth of A22 analog reset delivery outlet; TX1, the TX2 of radio frequency chip FM1702SL circuit, RX link to each other with PCB ring Shape antenna circuit, form the loop that transmits and receives of radio frequency communications circuitry; Wherein the artificial circuit part electric power system of radio frequency communications circuitry and digital circuit electric power system are isolated by inductance;
The infrared communication circuit is made up of serial expanded circuit, infrared reception and infrared emission circuit; Wherein serial expanded circuit is made up of chip TL16C550 and peripheral circuit thereof, and the data line of chip TL16C550 is connected with data line with the address wire of address wire with host CPU; The read-write control signal input pin of chip TL16C550 links to each other with the read-write control signal output pin of host CPU, and the serial ports of chip TL16C550 sends terminal and links to each other with the infrared emission circuit, and the serial ports of chip TL16C550 receives terminal and links to each other with infrared receiving circuit; The infrared emission circuit adopts a Sheffer stroke gate chip and two infrared transmitting tubes to form;
Ethernet interface circuit is made up of 10/100M Ethernet chip RTL8019AL and peripheral circuit, bus driver chip, bridge; Wherein the data of 10/100M Ethernet chip RTL8019AL link to each other with the data and address bus of host CPU by bus driver chip 74hc245 isolation back with the address wire bus, and the data line bus adopts 16 position datawires; Wherein D1, D2 link to each other with received signal indication pin with the transmission of 10/100M Ethernet chip RTL8019AL respectively, the TPIN+ of 10/100M Ethernet chip RTL8019AL, link to each other with the differential signal line of network transformer respectively; Wherein bus driver chip 74HC245 mainly keeps apart the equipment on the data and address bus, prevents bus collision.
This pre-payment management device for intelligent IC card and the parallel running of marketing gauging table, by RS485 bus collection marketing meter data, obtain the user by IC-card and purchase electric weight, the two data is sent into and is carried out real-time calculation and analysis among the acp chip S3C44B0X, and analysis result stored in the FLASH storer, judge whether needs tripping operation control according to analysis result simultaneously, acp chip S3C44B0X sends into control information among the single-chip microcomputer PIC16F877A, by PIC16F877A control circuit is carried out control operation again.Wireless communication modules such as the GSM/GPRS/CDMA in the device can be with the field data real-time report, and the main website platform also can be monitored the scene by wireless communication module.The infrared communication circuit of this device is used for the local parameter setting; Ethernet interface is used for local debugging and equipment Ethernet mode connects networking; LCD and button are used for local search; Pulsing circuit is used for acquisition pulse electric energy meter electric weight; The quantity of state Acquisition Circuit is used for the control relay state of a control, the closed-loop control of implement device.
This pre-payment management device for intelligent IC card is to be in arrears with the expense problem and to design at the bulk user in the marketing system, the pattern of electricity consumption behind this device employing post-pay paystation, electric weight remaining sum to the user is reduced in real time and is monitored, and according to user's electric weight residue situation the user is implemented alarm prompt and control with outage, be in arrears with the management style that the expense problem provides a kind of devoid of risk for power supply enterprise solves the user, play and reduce the charge difficulty, avoid the arrearage behavior, prevent the effect of bad debt dormant account; Also can realize avoiding the peak hour rationing the power supply by this system loading control function simultaneously, to guarantee ordered electric.
Claims (1)
1, a kind of pre-payment management device for intelligent IC card is characterized in that, described pre-payment management device for intelligent IC card comprises:
Metering circuit, electronic switch and the sample circuit formed by voltage transformer (VT), current transformer, resistor network and AC sampling chip, its input end is by 1 threephase current transformer and 3 measurement loop and electrical network couplings that single-phase potential transformer is formed, and described AC sampling chip links to each other with host CPU by SPI communication interface or serial ports;
Control loop, form by host CPU, single-chip microcomputer and quantity of state Acquisition Circuit, the signal input part of described single-chip microcomputer links to each other with the output terminal of quantity of state Acquisition Circuit, the control output end of described single-chip microcomputer links to each other with the input end of control circuit, the transmission mouth of described host CPU serial ports and the receiving port of microcontroller serial port link to each other, and the transmission mouth of the receiving port of host CPU serial ports and microcontroller serial port links to each other; Described quantity of state Acquisition Circuit is used for the control relay state of a control, the closed-loop control of implement device;
Actuating circuit, its input end links to each other with the control pin of described single-chip microcomputer by 6 light lotus roots, is used for realizing the electrical isolation of control circuit and control loop; Triode links to each other with the light lotus root, is used to amplify the electric current that drives relay coil; Diode is in parallel with relay coil, constitutes the relay coil freewheeling circuit;
The pulse collection loop is made up of host CPU, single-chip microcomputer, pulse acquisition circuit, is used for acquisition pulse electric energy meter electric weight; Wherein the signal input part of single-chip microcomputer links to each other with the signal output part of pulse acquisition circuit;
The GPRS/GSM wireless communication loop is made up of host CPU, GPRS/GSM communication module, SIM card seat, not gate chip, light emitting diode and radio-frequency antenna; Wherein the GPRS/GSM communication module is connected with host CPU by serial ports, links to each other with the SIM card seat by spi bus, links to each other with radio-frequency antenna by the RF concentric cable;
485 bus circuits are made up of 485 chips, light lotus root, dc conversion modules, bilateral diode and common mode inductance; Wherein the dc conversion modules input end links to each other with the power supply main system, and output terminal links to each other with 485 bus circuits, for 485 bus circuits provide the 5V power supply and isolate with the main system power supply; Wherein an end of bilateral diode is received respectively on 485 differential bus, and the other end inserts the earth lead terminal; Common mode inductance seals in 485 differential bus, suppresses common mode interference; This circuit input end links to each other with the transmission pin of No. 1 serial ports of host CPU by the light lotus root, and output terminal links to each other with the reception pin of No. 1 serial ports of host CPU by the light lotus root;
Radio frequency communications circuitry, form by radio frequency chip FM1702SL circuit and PCB antenna, radio frequency chip FM1702SL circuit links to each other with host CPU by spi bus, host CPU links to each other with No. 12 pins of radio frequency chip FM1702SL circuit with the input port of the common I/O mouth simulation of A7 spi bus, delivery outlet with the common I/O mouth simulation of A12 spi bus links to each other with No. 14 pins of radio frequency chip FM1702SL circuit, clock cable with the common I/O mouth simulation of A24 spi bus links to each other with No. 13 pins of radio frequency chip FM1702SL circuit, chip selection signal line with the common I/O mouth simulation of A20 spi bus links to each other with No. 15 pins of radio frequency chip FM1702SL circuit, links to each other with No. 23 pins of radio frequency chip FM1702SL circuit with the common I/O mouth of A22 analog reset delivery outlet; TX1, the TX2 of radio frequency chip FM1702SL circuit, RX link to each other with PCB ring Shape antenna circuit, form the loop that transmits and receives of radio frequency communications circuitry; Wherein the artificial circuit part electric power system of radio frequency communications circuitry and digital circuit electric power system are isolated by inductance;
The infrared communication circuit is made up of serial expanded circuit, infrared reception and infrared emission circuit, is used for the local parameter setting; Wherein serial expanded circuit is made up of chip TL16C550 and peripheral circuit thereof, and the data line of chip TL16C550 is connected with data line with the address wire of address wire with host CPU; The read-write control signal input pin of chip TL16C550 links to each other with the read-write control signal output pin of host CPU, and the serial ports of chip TL16C550 sends terminal and links to each other with the infrared emission circuit, and the serial ports of chip TL16C550 receives terminal and links to each other with infrared receiving circuit; The infrared emission circuit adopts a Sheffer stroke gate chip and two infrared transmitting tubes to form;
Ethernet interface circuit comprises Ethernet chip, bus driver chip and bridge, is used for local debugging and device network and connects; Wherein the data and address bus of Ethernet chip links to each other with the data and address bus of host CPU after isolating by the bus driver chip, and the data line bus adopts 16 position datawires; Wherein the bus driver chip is mainly kept apart the equipment on the data and address bus, prevents bus collision.
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| CN2008100463050A CN101393667B (en) | 2008-10-20 | 2008-10-20 | Pre-payment management device for intelligent IC card |
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| CN2008100463050A CN101393667B (en) | 2008-10-20 | 2008-10-20 | Pre-payment management device for intelligent IC card |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101854042A (en) * | 2010-04-07 | 2010-10-06 | 辽宁省电力有限公司锦州供电公司 | Intelligent terminal box of GPRS (General Packet Radio Service) network list |
| CN102243271A (en) * | 2011-06-15 | 2011-11-16 | 杭州炬华科技股份有限公司 | Single-phase local cost control intelligent electric energy meter |
| CN102419385A (en) * | 2010-09-27 | 2012-04-18 | 宁夏隆基宁光仪表有限公司 | Wireless remote meter reading fee-control electric energy meter |
| CN102446380A (en) * | 2011-09-21 | 2012-05-09 | 华立仪表集团股份有限公司 | Automatic cancellation method for meter of prepaid electricity-sell system |
| CN102708624A (en) * | 2012-03-19 | 2012-10-03 | 广西泽龙电子科技有限公司 | Prepayment electricity utilization management terminal |
| CN103514176A (en) * | 2012-06-21 | 2014-01-15 | 苏州工业园区新宏博通讯科技有限公司 | Data managing method for intelligent terminal |
| CN103954814A (en) * | 2014-01-09 | 2014-07-30 | 何亚雄 | Guiderail-type intelligent electric energy meter with protection function to electric appliances |
| CN106018950A (en) * | 2016-07-04 | 2016-10-12 | 深圳市鎏科技有限公司 | Integrated prepayment intelligent control system |
| CN108418839A (en) * | 2018-04-29 | 2018-08-17 | 云南电网有限责任公司 | Electric power dedicated encrypted COMSEC module |
| CN112614323A (en) * | 2020-11-30 | 2021-04-06 | 国网山东省电力公司滨州供电公司 | Electric energy meter with intranet switches function |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101854042B (en) * | 2010-04-07 | 2012-09-05 | 辽宁省电力有限公司锦州供电公司 | Intelligent terminal box of GPRS (General Packet Radio Service) network list |
| CN101854042A (en) * | 2010-04-07 | 2010-10-06 | 辽宁省电力有限公司锦州供电公司 | Intelligent terminal box of GPRS (General Packet Radio Service) network list |
| CN102419385A (en) * | 2010-09-27 | 2012-04-18 | 宁夏隆基宁光仪表有限公司 | Wireless remote meter reading fee-control electric energy meter |
| CN102243271A (en) * | 2011-06-15 | 2011-11-16 | 杭州炬华科技股份有限公司 | Single-phase local cost control intelligent electric energy meter |
| WO2013040846A1 (en) * | 2011-09-21 | 2013-03-28 | 华立仪表集团股份有限公司 | Automatic metering logout method for pre-paid electricity vending system |
| CN102446380A (en) * | 2011-09-21 | 2012-05-09 | 华立仪表集团股份有限公司 | Automatic cancellation method for meter of prepaid electricity-sell system |
| CN102446380B (en) * | 2011-09-21 | 2014-12-10 | 华立仪表集团股份有限公司 | Automatic cancellation method for meter of prepaid electricity-sell system |
| CN102708624A (en) * | 2012-03-19 | 2012-10-03 | 广西泽龙电子科技有限公司 | Prepayment electricity utilization management terminal |
| CN102708624B (en) * | 2012-03-19 | 2014-09-10 | 广西泽龙电子科技有限公司 | Prepayment electricity utilization management terminal |
| CN103514176A (en) * | 2012-06-21 | 2014-01-15 | 苏州工业园区新宏博通讯科技有限公司 | Data managing method for intelligent terminal |
| CN103954814A (en) * | 2014-01-09 | 2014-07-30 | 何亚雄 | Guiderail-type intelligent electric energy meter with protection function to electric appliances |
| CN106018950A (en) * | 2016-07-04 | 2016-10-12 | 深圳市鎏科技有限公司 | Integrated prepayment intelligent control system |
| CN108418839A (en) * | 2018-04-29 | 2018-08-17 | 云南电网有限责任公司 | Electric power dedicated encrypted COMSEC module |
| CN112614323A (en) * | 2020-11-30 | 2021-04-06 | 国网山东省电力公司滨州供电公司 | Electric energy meter with intranet switches function |
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| CN101393667B (en) | 2010-06-16 |
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