阅读说明：本技术 一种带有cpu卡的单相费控智能电能表系统 (Single-phase cost control intelligent electric energy meter system with CPU card ) 是由 李屹 王力 李桃 豆玉华 王堃 张奕婷 刘鹏伟 陈旭 于 2021-08-19 设计创作，主要内容包括：本发明公开了一种带有CPU卡的单相费控智能电能表系统,涉及电能表技术领域；包括电能计量模块、LCD显示模块、处理器、电量监测模块、电量分析模块以及购电管理模块；本发明中IC卡接口通过读卡器连接CPU卡,实现处理器的内部计费控制；同时CPU卡内置加密单元,避免购电信息泄露,保证了信息安全；电能计量模块统计的用户用电信息可以通过电力线缆发送至LCD显示模块上,用户能够及时了解自己的用电信息,提高节能意识,避免电能浪费；电量分析模块用于对用户用电信息进行分析处理,及时进行购电提醒；购电管理模块用于接收电量不足信号后对补电量进行分析,提示用户尽快购电以及购买合适的电量,提高用户体验感。(The invention discloses a single-phase cost control intelligent electric energy meter system with a CPU card, relating to the technical field of electric energy meters; the system comprises an electric energy metering module, an LCD display module, a processor, an electric quantity monitoring module, an electric quantity analysis module and an electricity purchasing management module; the IC card interface is connected with the CPU card through the card reader, so that the internal charging control of the processor is realized; meanwhile, an encryption unit is arranged in the CPU card, so that the leakage of electricity purchasing information is avoided, and the information safety is ensured; the user electricity consumption information counted by the electric energy metering module can be sent to the LCD display module through the electric power cable, so that the user can know the own electricity consumption information in time, the energy-saving consciousness is improved, and the electric energy waste is avoided; the electric quantity analysis module is used for analyzing and processing the electricity utilization information of the user and timely reminding electricity purchase; the electricity purchasing management module is used for analyzing the electricity supplementing quantity after receiving the electricity shortage signal, prompting a user to purchase electricity as soon as possible and purchase proper electricity, and improving user experience.)

1. A single-phase charge control intelligent electric energy meter system with a CPU card is characterized by comprising an IC card interface, an electric energy metering module, an LCD display module, a processor, a carrier communication module, an electric quantity monitoring module, an electric quantity analysis module, a reminding module and an electricity purchasing management module;

the IC card interface is connected with the CPU card through a card reader, the processor is connected with the IC card interface to realize the internal charging control of the processor, and a user inputs electricity purchasing information into the CPU card through a computer to realize electricity purchasing;

the electric energy metering module is used for metering the electricity utilization information of the user; the electric energy metering module is connected with the LCD display module through the carrier communication module in a power line carrier communication mode; the electric energy metering module sends the counted user electricity utilization information to the LCD display module through the electric cable, and the LCD display module displays the information in real time;

an LCD display module: the system is arranged in a user room and used for displaying the power utilization information of a user in real time;

the electric quantity monitoring module is used for monitoring the user electricity utilization information displayed by the LCD display module in real time and transmitting the user electricity utilization information to the electric quantity analysis module; the electric quantity analysis module is used for analyzing and processing the power utilization information of the user, and the specific analysis steps are as follows:

when a user starts to use electricity, collecting user electricity utilization information displayed by an LCD display module according to monitoring interval duration preset by the user;

marking the current residual capacity of a user as Li, establishing a curve graph of the current residual capacity changing along with time, and deriving the curve graph to obtain a power consumption rate curve graph; analyzing the power consumption rate curve graph to obtain a power shortage coefficient BH;

if the power shortage coefficient BH is larger than or equal to the power shortage coefficient threshold, judging that the electric quantity is insufficient at the moment, and generating an electric quantity shortage signal; the electric quantity analysis module is used for transmitting the electric quantity shortage signal to the electricity purchasing management module through the processor;

the electricity purchasing management module is used for analyzing the electricity supplementing quantity after receiving the electricity shortage signal to obtain an electricity supplementing quantity BL, and sending the electricity shortage signal and the corresponding electricity supplementing quantity BL to a mobile phone terminal of a user to prompt the user to purchase electricity as soon as possible.

2. The system of claim 1, wherein the CPU card is a smart IC card with a built-in encryption unit, and the user electricity information includes the user's current electricity consumption, the current remaining electricity amount and the current power consumption.

3. The single-phase fee-control intelligent electric energy meter system with the CPU card as claimed in claim 1, wherein the electric energy metering module comprises a voltage current transformer, an A/D converter; the voltage current transformer is used for collecting voltage current signals and transmitting the voltage current signals to the A/D converter, and the A/D converter receives the voltage current signals, converts the voltage current signals into digital signals and transmits the converted digital signals to the processor; the processor is used for bearing the functions of load control, rate control, data processing and storage.

4. The single-phase cost-control intelligent electric energy meter system with the CPU card according to claim 1, wherein the power consumption rate curve graph is analyzed to obtain a power shortage coefficient BH, and the power shortage coefficient BH is specifically:

when the current residual capacity Li of the user is larger than or equal to the capacity threshold, if the capacity consumption rate values are larger than the preset power consumption threshold K within the first preset time T1, indicating that the current residual capacity is in a high power consumption state;

if the current residual power is in a high-consumption state, acquiring a power consumption rate value of the user within a first preset time T1, and marking the power consumption rate value as Di to obtain a consumption rate information group;

obtaining a standard deviation alpha of a consumption rate information group according to a standard deviation calculation formula;

if alpha is less than or equal to a preset standard deviation threshold value; obtaining the average value of the consumption rate information group according to an average value calculation formula and marking the average value as Ks; simultaneously, making the reference power consumption rate CK equal to Ks;

if alpha is larger than the preset standard deviation threshold, the reference power consumption CK is made (Ks multiplied by b1+ alpha multiplied by b2)^0.45(ii) a Wherein b1 and b2 are coefficient factors; by using maleCalculating the formula BH (CK multiplied by a2)/(Li multiplied by a1) to obtain the power shortage coefficient BH, wherein a1 and a2 are coefficient factors;

when the current residual electric quantity Li of the user is less than the electric quantity threshold value, marking the real-time electric quantity consumption rate value of the user as Kz; the power shortage coefficient BH is calculated by using the formula BH 1/(Li multiplied by a3-Kz multiplied by a4), wherein a3 and a4 are coefficient factors.

5. The single-phase fee-control intelligent electric energy meter system with the CPU card as claimed in claim 4, wherein the specific analysis step of the electric quantity analysis module further comprises:

v1: if the current residual electric quantity is in a high consumption state, generating a high consumption signal of the electric quantity;

the electric quantity analysis module is used for transmitting the electric quantity high-consumption signal to the reminding module through the processor; the reminding module is used for sending reminding information to a mobile phone terminal of a user, wherein the reminding information is that 'the current electricity consumption is too high, electric appliances are reasonably arranged for use, and circuit tripping is avoided';

v2: acquiring the current electricity consumption DT1 of the user; if the current electricity consumption DT1 reaches a preset threshold value, generating an electricity consumption excess signal;

the electric quantity analysis module is used for transmitting the power utilization excess signal to the reminding module through the processor; the reminding module is used for sending reminding information to a mobile phone terminal of a user, wherein the reminding information is 'the electricity utilization excess in the same day, reasonable arrangement of electric appliances for use is suggested, and electricity is saved';

v3: acquiring current power W1 of a user; if the current electric power W1 is larger than the preset power threshold value within the second preset time T2, generating a power excess signal;

the electric quantity analysis module is used for transmitting the power excess signal to the reminding module through the processor; the reminding module is used for sending reminding information to a mobile phone terminal of a user, and the reminding information is 'the current power utilization power excess, and proposes to reasonably arrange an electric appliance for use and avoid circuit tripping'.

6. The single-phase cost-control intelligent electric energy meter system with the CPU card as claimed in claim 1, wherein the specific analysis steps of the electricity purchasing management module are as follows:

s1: when the electricity purchasing management module receives the electricity shortage signal, the corresponding current remaining electricity Li is obtained and marked as pre-compensation electricity B_{Front side}；

S2: obtaining a calculation formula of the power shortage coefficient BH, wherein B is_{Front side}If the electric quantity threshold value is less than the threshold value, BH is 1/(Li multiplied by a3-Kz multiplied by a 4); when B is present_{Front side}When the charge amount is larger than or equal to the charge amount threshold value, BH (CK multiplied by a2)/(Li multiplied by a 1); taking Li as a variable, making the power shortage coefficient BH equal to the power shortage coefficient threshold value multiplied by 1/2, solving the value of Li at the moment, and taking the value as the compensated electric quantity B_{Rear end}；

S3: using the formula BL ═ B_{Rear end}-B_{Front side}And calculating to obtain the electricity supplementing quantity BL.

Technical Field

The invention relates to the technical field of electric energy meters, in particular to a single-phase cost control intelligent electric energy meter system with a CPU card.

Background

The smart grid is a novel modern power grid formed by highly integrating advanced sensing measurement technology, information communication technology, analysis decision technology, automatic control technology, energy power technology and power grid infrastructure. The intelligent electric meter is used as a terminal of an intelligent power grid, is an important component of the intelligent power grid, and has the functions of electric energy metering, remote meter reading, two-way communication, real-time monitoring and the like;

the electricity utilization mode of the traditional electric energy meter is that electricity is firstly utilized and then charged, so that the charging of an electric power company is difficult, bad accounts are easily caused, most electric energy meters cannot realize remote charge control in communication, the electricity charge is difficult to collect after a user owes the charge, and the phenomenon that an illegal user changes parameters of the electric energy meter to implement electricity stealing exists; part of the remote fee control tables can not realize automatic fee calculation, and all charging can be carried out only in the background; and the most of charge accuse ammeter is installed outdoors, for example high-rise building installs in the basement usually, and the consumer to the electric quantity is totally unable to know, and this just leads to some users to use the electricity wantonly, can cause the waste of electric energy like this, in case neglect the power consumption condition, probably appear that the electric quantity is not enough to lead to the fact the power failure or electric quantity consumption fast to cause frequently to purchase the electricity or once only purchase too much electricity, and electric quantity pile up, problem such as the fund is occupied is caused slowly to the electric quantity consumption, influences user experience and feels.

Disclosure of Invention

In order to solve the problems existing in the scheme, the invention provides a single-phase cost control intelligent electric energy meter system with a CPU card. The IC card interface is connected with the CPU card through the card reader, so that the internal charging control of the processor is realized; the user can purchase the electricity by inputting the electricity purchasing information into the CPU card through the computer; meanwhile, an encryption unit is arranged in the CPU card, so that the leakage of electricity purchasing information is avoided, and the information safety is ensured; the user electricity consumption information counted by the electric energy metering module can be sent to the LCD display module through the electric power cable, so that a user can know the own electricity consumption information in time indoors, the energy-saving consciousness of the user can be improved, and the electric energy waste is avoided;

the electricity purchasing management module is used for analyzing electricity supplement quantity after receiving an electricity shortage signal to prompt a user to purchase electricity as soon as possible and purchase proper electricity, so that the problems of frequent electricity purchasing caused by too little electricity purchasing, high electricity purchasing speed or too much electricity purchasing at one time, low electricity consumption, electricity accumulation caused by slow electricity consumption, occupied fund and the like are avoided; the user experience is improved.

The purpose of the invention can be realized by the following technical scheme:

a single-phase charge control intelligent electric energy meter system with a CPU card comprises an IC card interface, an electric energy metering module, an LCD display module, a processor, a carrier communication module, an electric quantity monitoring module, an electric quantity analysis module, a reminding module and an electricity purchasing management module;

the processor is connected with the IC card interface, the CPU card is connected with the IC card interface through the card reader to realize the internal charging control of the processor, and a user inputs the electricity purchasing information into the CPU card through a computer to realize electricity purchasing;

the electric energy metering module is used for metering the electricity utilization information of the user; the electric energy metering module is connected with the LCD display module through the carrier communication module in a power line carrier communication mode; the electric energy metering module sends the counted user electricity utilization information to the LCD display module through the electric cable, and the LCD display module displays the information in real time;

an LCD display module: the system is arranged in a user room and used for displaying the power utilization information of a user in real time;

the electric quantity monitoring module is used for monitoring the user electricity utilization information displayed by the LCD display module in real time and transmitting the user electricity utilization information to the electric quantity analysis module; the electric quantity analysis module is used for analyzing and processing the power utilization information of the user, and the specific analysis steps are as follows:

when a user starts to use electricity, collecting user electricity utilization information displayed by an LCD display module according to monitoring interval duration preset by the user;

marking the current residual capacity of a user as Li, establishing a curve graph of the current residual capacity changing along with time, and deriving the curve graph to obtain a power consumption rate curve graph; analyzing the power consumption rate curve graph to obtain a power shortage coefficient BH;

if the power shortage coefficient BH is larger than or equal to the power shortage coefficient threshold, judging that the electric quantity is insufficient at the moment, and generating an electric quantity shortage signal; the electric quantity analysis module is used for transmitting the electric quantity shortage signal to the electricity purchasing management module through the processor;

the electricity purchasing management module is used for analyzing the electricity supplementing quantity after receiving the electricity shortage signal to obtain an electricity supplementing quantity BL, and sending the electricity shortage signal and the corresponding electricity supplementing quantity BL to a mobile phone terminal of a user to prompt the user to purchase electricity as soon as possible.

Further, the CPU card is an intelligent IC card with a built-in encryption unit, and the user electricity information includes the user's current electricity consumption, current remaining electricity amount, and current electricity consumption power.

Further, the electric energy metering module comprises a voltage current transformer and an A/D converter; the voltage current transformer is used for collecting voltage current signals and transmitting the voltage current signals to the A/D converter, and the A/D converter receives the voltage current signals, converts the voltage current signals into digital signals and transmits the converted digital signals to the processor; the processor is used for bearing the functions of load control, rate control, data processing and storage.

Further, analyzing the power consumption rate curve graph to obtain a power shortage coefficient BH, which specifically comprises:

when the current residual capacity Li of the user is larger than or equal to the capacity threshold, if the capacity consumption rate values are larger than the preset power consumption threshold K within the first preset time T1, indicating that the current residual capacity is in a high power consumption state;

if the current residual power is in a high-consumption state, acquiring a power consumption rate value of the user within a first preset time T1, and marking the power consumption rate value as Di to obtain a consumption rate information group;

obtaining a standard deviation alpha of a consumption rate information group according to a standard deviation calculation formula;

if alpha is less than or equal to a preset standard deviation threshold value; obtaining the average value of the consumption rate information group according to an average value calculation formula and marking the average value as Ks; simultaneously, making the reference power consumption rate CK equal to Ks;

if alpha is larger than the preset standard deviation threshold, the reference power consumption CK is made to be (Ks multiplied by b1+ alpha multiplied by b2)^0.45(ii) a Wherein b1 and b2 are coefficient factors; calculating the power shortage coefficient BH by using a formula of (CK multiplied by a2)/(Li multiplied by a1), wherein a1 and a2 are coefficient factors;

when the current residual electric quantity Li of the user is less than the electric quantity threshold value, marking the real-time electric quantity consumption rate value of the user as Kz; the power shortage coefficient BH is calculated by using the formula BH 1/(Li multiplied by a3-Kz multiplied by a4), wherein a3 and a4 are coefficient factors.

Further, the specific analysis step of the electric quantity analysis module further includes:

v1: if the current residual electric quantity is in a high consumption state, generating a high consumption signal of the electric quantity;

the electric quantity analysis module is used for transmitting the electric quantity high-consumption signal to the reminding module through the processor; the reminding module is used for sending reminding information to a mobile phone terminal of a user, wherein the reminding information is that 'the current electricity consumption is too high, electric appliances are reasonably arranged for use, and circuit tripping is avoided';

v2: acquiring the current electricity consumption DT1 of the user; if the current electricity consumption DT1 reaches a preset threshold value, generating an electricity consumption excess signal;

the electric quantity analysis module is used for transmitting the power utilization excess signal to the reminding module through the processor; the reminding module is used for sending reminding information to a mobile phone terminal of a user, wherein the reminding information is 'the electricity utilization excess in the same day, reasonable arrangement of electric appliances for use is suggested, and electricity is saved';

v3: acquiring current power W1 of a user; if the current electric power W1 is larger than the preset power threshold value within the second preset time T2, generating a power excess signal;

the electric quantity analysis module is used for transmitting the power excess signal to the reminding module through the processor; the reminding module is used for sending reminding information to a mobile phone terminal of a user, and the reminding information is 'the current power utilization power excess, and proposes to reasonably arrange an electric appliance for use and avoid circuit tripping'.

Further, the specific analysis steps of the electricity purchasing management module are as follows:

s1: when the electricity purchasing management module receives the electricity shortage signal, the corresponding current remaining electricity Li is obtained and marked as pre-compensation electricity B_{Front side}；

S2: obtaining a calculation formula of the power shortage coefficient BH, wherein B is_{Front side}If the electric quantity threshold value is less than the threshold value, BH is 1/(Li multiplied by a3-Kz multiplied by a 4); when B is present_{Front side}When the charge amount is larger than or equal to the charge amount threshold value, BH (CK multiplied by a2)/(Li multiplied by a 1); taking Li as a variable, making the power shortage coefficient BH equal to the power shortage coefficient threshold value multiplied by 1/2, solving the value of Li at the moment, and taking the value as the compensated electric quantity B_{Rear end}；

S3: using the formula BL ═ B_{Rear end}-B_{Front side}And calculating to obtain the electricity supplementing quantity BL.

Compared with the prior art, the invention has the beneficial effects that:

1. the IC card interface is connected with the CPU card through a card reader, and the processor is connected with the IC card interface to realize the internal charging control of the processor; the user can purchase the electricity by inputting the electricity purchasing information into the CPU card through the computer; meanwhile, an encryption unit is arranged in the CPU card, so that the leakage of electricity purchasing information is avoided, and the information safety is ensured;

2. the electric energy metering module is used for metering the user electricity utilization information, and the user electricity utilization information counted by the electric energy metering module can be sent to the LCD display module through the electric power cable and displayed by the LCD display module in real time; therefore, the user can know the own electricity utilization information in time indoors, so that the energy-saving consciousness of the user can be improved, and the waste of electric energy is avoided;

3. the electric quantity monitoring module is used for monitoring the user electricity utilization information displayed by the LCD display module in real time; the electric quantity analysis module is used for analyzing and processing the electricity utilization information of the user; marking the current residual capacity of a user as Li, establishing a curve graph of the current residual capacity changing along with time, and deriving the curve graph to obtain a power consumption rate curve graph; processing and analyzing the power consumption rate curve graph to obtain a power shortage coefficient BH, if the power shortage coefficient BH is larger than or equal to a power shortage coefficient threshold, judging that the power is insufficient at the moment, generating a power shortage signal, and timely prompting a user to purchase power to avoid power shortage;

4. the electricity purchasing management module is used for analyzing the electricity supplementing quantity after receiving the electricity shortage signal, acquiring the corresponding current residual electricity Li when the electricity purchasing management module receives the electricity shortage signal, and marking the current residual electricity Li as the electricity B before supplementing_{Front side}(ii) a Obtaining a calculation formula of the power shortage coefficient BH, taking Li as a variable, making the power shortage coefficient BH equal to a power shortage coefficient threshold value multiplied by 1/2, solving the value of Li at the moment, and taking the value as the compensated electric quantity B_{Rear end}(ii) a Using the formula BL ═ B_{Rear end}-B_{Front side}Calculating to obtain the electricity supplementing quantity BL; the electricity purchasing management module is used for sending the electricity shortage signal and the corresponding electricity supplementing quantity BL to a mobile phone terminal of a user, prompting the user to purchase electricity and purchase proper electricity as soon as possible, and avoiding the problems of frequent electricity purchasing caused by too little electricity purchasing and fast electricity consumption or electricity accumulation and occupied funds caused by too much electricity purchasing at one time and slow electricity consumption; the user experience is improved;

5. the electric quantity analysis module also monitors and analyzes the current residual electric quantity, the current power consumption and the current power consumption, and timely reminds a user when the current residual electric quantity is in a high consumption state or the current power consumption is overlarge, so that the user is advised to reasonably arrange an electric appliance for use, the circuit trip can be avoided, and the power consumption is saved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic block diagram of a single-phase cost-control intelligent electric energy meter system with a CPU card according to the present invention.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1, a single-phase cost control intelligent electric energy meter system with a CPU card comprises an IC card interface, an electric energy metering module, an a/D converter, an LCD display module, a processor, a carrier communication module, an electric quantity monitoring module, an electric quantity analysis module, a reminding module, and an electricity purchasing management module;

the IC card interface is connected with a CPU card through a card reader, the CPU card is an intelligent IC card with a built-in encryption unit, the processor is connected with the IC card interface, and the CPU card is connected with the IC card interface through the card reader to realize the internal charging control of the processor; the user can purchase the electricity by inputting the electricity purchasing information into the CPU card through the computer; an encryption unit is arranged in the CPU card, so that the leakage of electricity purchasing information is avoided, and the information safety is ensured;

the electric energy metering module is used for metering the electricity utilization information of the user and comprises a voltage current transformer and an A/D converter; the voltage current transformer is used for collecting voltage current signals and transmitting the voltage current signals to the A/D converter, and the A/D converter receives the voltage current signals, converts the voltage current signals into digital signals and transmits the converted digital signals to the processor;

the processor is used for bearing the functions of load control, rate control, data processing and storage; the electric energy metering module is connected with the LCD display module through the carrier communication module in a power line carrier communication mode; the user electricity consumption information counted by the electric energy metering module can be sent to the LCD display module through the electric cable and displayed in real time by the LCD display module;

an LCD display module: the system is installed in a user room and used for displaying user electricity utilization information in real time, wherein the user electricity utilization information comprises the current electricity consumption of a user, the current residual electricity and the current electricity utilization power; therefore, the user can know the own electricity utilization information in time indoors, so that the energy-saving consciousness of the user can be improved, and the waste of electric energy is avoided;

the electric quantity monitoring module is used for monitoring the user electricity utilization information displayed by the LCD display module in real time and transmitting the user electricity utilization information to the electric quantity analysis module; the electric quantity analysis module is used for analyzing and processing the power utilization information of the user, and the specific analysis steps are as follows:

the method comprises the following steps: when a user starts to use electricity, collecting user electricity utilization information displayed by an LCD display module according to monitoring interval duration preset by the user;

step two: setting power consumption parameters, including: the power consumption control method comprises the following steps of firstly, presetting a first preset time T1, presetting a second preset time T2 and presetting a power consumption threshold value K; wherein T1, T2 and K are preset values;

step three: marking the current residual capacity of a user as Li, establishing a curve graph of the current residual capacity changing along with time, and deriving the curve graph to obtain a power consumption rate curve graph;

step four: when the current residual capacity Li of the user is larger than or equal to the capacity threshold, if the capacity consumption rate values are larger than the preset power consumption threshold K within the first preset time T1, indicating that the current residual capacity is in a high power consumption state;

if the current residual power is in a high-consumption state, acquiring a power consumption rate value of the user within a first preset time T1, and marking the power consumption rate value as Di to obtain a consumption rate information group;

obtaining a standard deviation alpha of a consumption rate information group according to a standard deviation calculation formula;

if alpha is less than or equal to a preset standard deviation threshold value; obtaining the average value of the consumption rate information group according to an average value calculation formula and marking the average value as Ks; simultaneously, making the reference power consumption rate CK equal to Ks;

if alpha is larger than the preset standard deviation threshold, the reference power consumption CK is made to be (Ks multiplied by b1+ alpha multiplied by b2)^0.45(ii) a Wherein b1 and b2 are coefficient factors;

calculating the power shortage coefficient BH by using a formula of (CK multiplied by a2)/(Li multiplied by a1), wherein a1 and a2 are coefficient factors;

step five: when the current residual electric quantity Li of the user is less than the electric quantity threshold value, marking the real-time electric quantity consumption rate value of the user as Kz;

calculating the power shortage coefficient BH by using a formula BH 1/(Li multiplied by a3-Kz multiplied by a4), wherein a3 and a4 are coefficient factors;

step six: comparing the power shortage coefficient BH with a power shortage coefficient threshold value;

if the power shortage coefficient BH is larger than or equal to the power shortage coefficient threshold, judging that the electric quantity is insufficient at the moment, and generating an electric quantity shortage signal;

the electric quantity analysis module is used for transmitting the electric quantity shortage signal and the corresponding current remaining electric quantity Li, the reference power consumption rate CK and the real-time electric quantity consumption rate value Kz to the processor, and the processor is used for transmitting the electric quantity shortage signal and the corresponding current remaining electric quantity Li, the reference power consumption rate CK and the real-time electric quantity consumption rate value Kz to the electricity purchasing management module;

the electricity purchasing management module is used for analyzing the electricity supplementing quantity after receiving the electricity shortage signal, and the specific steps are as follows:

s1: when the electricity purchasing management module receives the electricity shortage signal, the corresponding current remaining electricity Li is obtained and marked as pre-compensation electricity B_{Front side}；

S2: obtaining a calculation formula of the power shortage coefficient BH, wherein B is_{Front side}If the electric quantity threshold value is less than the threshold value, BH is 1/(Li multiplied by a3-Kz multiplied by a 4); when B is present_{Front side}When the charge amount is larger than or equal to the charge amount threshold value, BH (CK multiplied by a2)/(Li multiplied by a 1); taking Li as a transformationThe power shortage coefficient BH is set to be the power shortage coefficient threshold × 1/2, the value of Li at this time is solved, and this is taken as the post-compensation electric quantity B_{Rear end}；

S3: using the formula BL ═ B_{Rear end}-B_{Front side}Calculating to obtain the electricity supplementing quantity BL;

the electricity purchasing management module is used for sending an electricity shortage signal and a corresponding electricity supplementing quantity BL to a mobile phone terminal of a user, prompting the user to purchase electricity as soon as possible, and avoiding power failure caused by electricity shortage; meanwhile, the current residual electric quantity Li, the reference power consumption rate CK and the real-time power consumption rate value Kz are combined to analyze the compensated electric quantity BL, so that a user is prompted to purchase a proper electric quantity, and the problems of frequent power purchase caused by too little power purchase and high power consumption or power accumulation caused by too much power purchase at one time and low power consumption, occupied funds and the like are avoided; the user experience is improved;

the specific analysis step of the electric quantity analysis module further comprises:

v1: if the current residual electric quantity is in a high consumption state, generating a high consumption signal of the electric quantity;

the electric quantity analysis module is used for transmitting the electric quantity high-consumption signal to the reminding module through the processor; the reminding module is used for sending reminding information to a mobile phone terminal of a user, wherein the reminding information is that 'the current electricity consumption is too high, electric appliances are reasonably arranged for use, and circuit tripping is avoided';

v2: acquiring the current electricity consumption DT1 of the user; if the current electricity consumption DT1 reaches a preset threshold value, generating an electricity consumption excess signal;

the electric quantity analysis module is used for transmitting the power utilization excess signal to the reminding module through the processor; the reminding module is used for sending reminding information to a mobile phone terminal of a user, wherein the reminding information is 'the electricity utilization excess in the same day, reasonable arrangement of electric appliances for use is suggested, and electricity is saved';

v3: acquiring current power W1 of a user; if the current electric power W1 is larger than the preset power threshold value within the second preset time T2, generating a power excess signal;

the electric quantity analysis module is used for transmitting the power excess signal to the reminding module through the processor; the reminding module is used for sending reminding information to a mobile phone terminal of a user, wherein the reminding information is 'excess current power utilization, reasonable arrangement of electric appliances for use is suggested, and circuit tripping is avoided';

the electric quantity analysis module monitors and analyzes the current residual electric quantity, the current power consumption and the current power consumption, and timely reminds a user when the current residual electric quantity is in a high consumption state or the current power consumption is overlarge, so that the user is advised to reasonably arrange an electric appliance for use, the circuit trip can be avoided, and the power consumption is saved.

The above formulas are all calculated by removing dimensions and taking numerical values thereof, the formula is a formula which is obtained by acquiring a large amount of data and performing software simulation to obtain the closest real situation, and the preset parameters and the preset threshold value in the formula are set by the technical personnel in the field according to the actual situation or obtained by simulating a large amount of data.

The working principle of the invention is as follows:

when the single-phase charge control intelligent electric energy meter system with the CPU card works, an IC card interface is connected with the CPU card through a card reader, and a processor is connected with the IC card interface, so that the internal charging control of the processor is realized; the user can purchase the electricity by inputting the electricity purchasing information into the CPU card through the computer; meanwhile, an encryption unit is arranged in the CPU card, so that the leakage of electricity purchasing information is avoided, and the information safety is ensured;

the electric energy metering module is used for metering the user electricity utilization information, and the user electricity utilization information counted by the electric energy metering module can be sent to the LCD display module through the electric power cable and displayed by the LCD display module in real time; therefore, the user can know the own electricity utilization information in time indoors, so that the energy-saving consciousness of the user can be improved, and the waste of electric energy is avoided;

the electric quantity monitoring module is used for monitoring the user electricity utilization information displayed by the LCD display module in real time; the electric quantity analysis module is used for analyzing and processing the electricity utilization information of the user; marking the current residual capacity of a user as Li, establishing a curve graph of the current residual capacity changing along with time, and deriving the curve graph to obtain a power consumption rate curve graph; processing and analyzing the power consumption rate curve chart to obtain the power shortage coefficient BH, if the power shortage coefficient BH is more than or equal to the power shortage coefficient threshold valueIf so, judging that the electric quantity is insufficient at the moment, and generating an electric quantity insufficiency signal; the electricity purchasing management module is used for analyzing the electricity supplementing quantity after receiving the electricity shortage signal, acquiring the corresponding current residual electricity Li when the electricity purchasing management module receives the electricity shortage signal, and marking the current residual electricity Li as the electricity B before supplementing_{Front side}(ii) a Obtaining a calculation formula of the power shortage coefficient BH, taking Li as a variable, making the power shortage coefficient BH equal to a power shortage coefficient threshold value multiplied by 1/2, solving the value of Li at the moment, and taking the value as the compensated electric quantity B_{Rear end}(ii) a Using the formula BL ═ B_{Rear end}-B_{Front side}Calculating to obtain the electricity supplementing quantity BL; the electricity purchasing management module is used for sending the electricity shortage signal and the corresponding electricity supplementing quantity BL to a mobile phone terminal of a user, prompting the user to purchase electricity and purchase proper electricity as soon as possible, and avoiding the problems of frequent electricity purchasing caused by too little electricity purchasing and fast electricity consumption or electricity accumulation and occupied funds caused by too much electricity purchasing at one time and slow electricity consumption; the user experience is improved.

In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise forms disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.