CN105606889A - Electric energy metering system based on wireless communication technology - Google Patents
Electric energy metering system based on wireless communication technology Download PDFInfo
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- CN105606889A CN105606889A CN201610104908.6A CN201610104908A CN105606889A CN 105606889 A CN105606889 A CN 105606889A CN 201610104908 A CN201610104908 A CN 201610104908A CN 105606889 A CN105606889 A CN 105606889A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R22/00—Arrangements for measuring time integral of electric power or current, e.g. electricity meters
- G01R22/06—Arrangements for measuring time integral of electric power or current, e.g. electricity meters by electronic methods
- G01R22/10—Arrangements for measuring time integral of electric power or current, e.g. electricity meters by electronic methods using digital techniques
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- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
- G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
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- Computer Networks & Wireless Communication (AREA)
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Abstract
The invention discloses an electric energy metering system based on the wireless communication technology and belongs to the power grid distribution field. According to the system, an advanced electric energy acquisition chip is employed as an electric energy acquisition module, so the technical effect of precisely acquiring the electric energy data can be realized; the ZigBee wireless sensing communication technology method is employed, so remote electric energy detection can be realized; the data is accessed to the Ethernet, so management can be conveniently carried out by electric staff, and the intelligent technical effect of the electric energy metering system is realized.
Description
Technical field
The present invention relates to electrical network distribution field, relate in particular to a kind of electric energy metering system based on wireless communication technology.
Background technology
Electrical energy metering is the important component part in distribution field, and it is intelligentized necessary that distribution field is not only in its intellectuality, also meets the plan of the propeller networking proposing in country " 12 " planning simultaneously; Electrical energy metering facility is as the important tool of generated energy acquisition, record and communication, and the life of giving people is brought a lot of facilities by its intellectuality; Along with the development of each subject, the space that the performance of measuring equipment is also further improved, more and more higher requirement electrical energy metering automation being proposed in order to meet scientific and technological progress and social development, must research and develop the better intelligent electric meter of performance; Electric energy metered system not only can reflect the information of power consumer and power plant, can further reflect the operation conditions of electricity market simultaneously, contributes to administrative staff better to adjust power equipment, virtually regulates power consumption; If can not extensively and in depth realize the intellectuality of electric-power metering, between power supply and demand, just there will be large gap, so that weaken the effectiveness of mounted intelligent grid equipment, reduce energy efficiency, also just make public interest receive infringement.
Summary of the invention
Technical problem to be solved by this invention is the technical deficiency for above-mentioned existence, a kind of electric energy metering system based on wireless communication technology is provided, can precisely gather electric energy data, realize electric flux remote detection, be convenient to work about electric power personnel and manage, and then realize the intellectuality of electric energy metering system.
For solving the problems of the technologies described above, the technical solution adopted in the present invention is:
Based on an electric energy metering system for wireless communication technology, comprise generated energy acquisition module, electrical energy metering module, information transfer module, display screen, power module; Generated energy acquisition module is connected to electrical energy metering module, and the opposite side of electrical energy metering module is connected to information transfer module, and the opposite side of information transfer module is connected to display screen; Power module is connected with generated energy acquisition module, electrical energy metering module, information transfer module and display screen; Power module comprises that model is the power supply chip U1 of LM1117-5, the power supply chip U2 that model is LM1117-3.3, transformer T1, full bridge rectifier D1; The secondary of transformer T1 is connected to the input of full bridge rectifier D1, and the output of full bridge rectifier D1 provides the power supply VCC of 15V, is connected to the input Vin pin of power supply chip U1 simultaneously; The output Vout pin of power supply chip U1 provides the power vd D of 5V, is connected to the input Vin pin of power supply chip U2 simultaneously; The output Vout pin of power supply chip U2 provides 3V3 power supply.
Further optimize the technical program, described generated energy acquisition module comprises resistance R 1, R2, R3, R4, R5, R6, R7, R8, capacitor C 1, C2, C3, C4, C5, C6; Wherein capacitor C 1 is connected ground connection after the zero line of alternating current with resistance R 4; Resistance R 1 is connected in the phase line of alternating current, and the other end is connected to resistance R 3 by resistance R 2, and the opposite side of resistance R 3 is connected with capacitor C 2 and the rear ground connection of resistance R 5; Resistance R 7 is connected in the phase line of alternating current, and two ends are contact resistance R6, R8 respectively, and the opposite side of resistance R 6, R8 is respectively by ground connection after connection capacitor C 5, C6.
Further optimize the technical program, described electrical energy metering module comprises that model is the electrical energy metering chip U3 of AD71056, resistance R 9, R10, R11, capacitor C 13, C14, C15; Wherein the VDD of electrical energy metering chip U3, REF, S0, S1 pin are connected to the VDD power supply that power module provides, the REF pin of electrical energy metering chip U3 is connected to capacitor C 13 and C14, and the AGND pin that the opposite side of capacitor C 13 and C14 is connected to is ground connection simultaneously; The CF pin of electrical energy metering chip U3 is connected to R10, and the opposite side contact resistance R9 of R10 as the output of electrical energy metering module, exports to information transfer module by signal simultaneously; The RCLKIN of electrical energy metering chip U3 and S1 pin are respectively by resistance R 11 and capacitor C 15 ground connection.
Further optimize the technical program, described information transfer module comprises that model is the ZigBee chip U4 of CC2530, the E2PROM chip U6 that model is AT24C32, button S1, crystal oscillator Y1, Y2, resistance R 13, capacitor C 10, C11, C24, C25, C26; The P1_0 of ZigBee chip U4 and P0_7 pin are connected respectively SCL and the SDA pin of E2PROM chip U6; The RST pin of ZigBee chip U4 is connected with capacitor C 26, button S1 and resistance R 13, and the opposite side of resistance R 13 is connected to the 3V3 power supply that power module provides; The p2_4/XCSC32K_Q1 of ZigBee chip U4 and p2_3/XCSC32K_Q2 pin are connected to the both sides of crystal oscillator Y1 simultaneously respectively by capacitor C 10, C11 ground connection, and the XCSC_Q1 of ZigBee chip U4 and XCSC_Q2 pin are connected to the both sides of crystal oscillator Y2 simultaneously respectively by capacitor C 24, C25 ground connection.
Compared with prior art, the present invention has the following advantages: 1, AD71056 is a high-precision electrical energy metering chip, AD71056 internal current passage is through the processing of inner phase place circuit for rectifying, with voltage channel phase matched, the high-pass filter of chip internal can DC-offset correction, inside has also been designed accurate oscillating circuit simultaneously provides clock source for it, and owing to not needing additional crystal or resonator, the cost of whole circuit is all reduced; 2, CC2530 is a real SOC(system on a chip) (SoC) solution for the ZigBee application of 2.4-GHzIEEE802.15.4, it can set up powerful network node with low-down total material cost, CC2530 combines the premium properties of leading RF transceiver, the enhancement mode 8051CPU of industrywide standard, In-System Programmable flash memory, 8-KBRAM and many other powerful functions, CC2530 has different operational modes, make it especially adapt to the system of super low-power consumption requirement, conversion time between operational mode is short has further guaranteed low energy expenditure; 3, the E2PROM of AT24C32 is produced by Mcrochip company of the U.S., the E2PROM of the serial CMOS of the support I2C bus data transportation protocol of 1-512K position, can electricity consumption wipe, the self-timing writing cycle able to programme (comprises that the auto-erasing time is no more than 10ms, typical case's time is 5ms), Serial E 2PROM generally has two kinds of writing modes, and one is byte writing mode, also has another kind of page writing mode.
Brief description of the drawings
Fig. 1 is system architecture diagram;
Fig. 2 is power module schematic diagram;
Fig. 3 is generated energy acquisition module and electrical energy metering module principle figure;
Fig. 4 is information transfer module schematic diagram;
Fig. 5 is display screen schematic diagram.
In figure, 1, generated energy acquisition module; 2, electrical energy metering module; 3, information transfer module; 4, display screen; 5, power module.
Detailed description of the invention
For making the object, technical solutions and advantages of the present invention more cheer and bright, below in conjunction with detailed description of the invention and with reference to accompanying drawing, the present invention is described in more detail. Should be appreciated that, these descriptions are exemplary, and do not really want to limit the scope of the invention. In addition, in the following description, omitted the description to known features and technology, to avoid unnecessarily obscuring concept of the present invention.
Detailed description of the invention one: as Figure 1-5, comprise generated energy acquisition module 1, electrical energy metering module 2, information transfer module 3, display screen 4, power module 5; Generated energy acquisition module 1 is connected to electrical energy metering module 2, and the opposite side of electrical energy metering module 2 is connected to information transfer module 3, and the opposite side of information transfer module 3 is connected to display screen 4; Power module 5 is connected with generated energy acquisition module 1, electrical energy metering module 2, information transfer module 3 and display screen 4; Power module 5 comprises that model is the power supply chip U1 of LM1117-5, the power supply chip U2 that model is LM1117-3.3, transformer T1, full bridge rectifier D1; The secondary of transformer T1 is connected to the input of full bridge rectifier D1, and the output of full bridge rectifier D1 provides the power supply VCC of 15V, is connected to the input Vin pin of power supply chip U1 simultaneously; The output Vout pin of power supply chip U1 provides the power vd D of 5V, is connected to the input Vin pin of power supply chip U2 simultaneously; The output Vout pin of power supply chip U2 provides 3V3 power supply; Generated energy acquisition module 1 comprises resistance R 1, R2, R3, R4, R5, R6, R7, R8, capacitor C 1, C2, C3, C4, C5, C6; Wherein capacitor C 1 is connected ground connection after the zero line of alternating current with resistance R 4; Resistance R 1 is connected in the phase line of alternating current, and the other end is connected to resistance R 3 by resistance R 2, and the opposite side of resistance R 3 is connected with capacitor C 2 and the rear ground connection of resistance R 5; Resistance R 7 is connected in the phase line of alternating current, and two ends are contact resistance R6, R8 respectively, and the opposite side of resistance R 6, R8 is respectively by ground connection after connection capacitor C 5, C6; Electrical energy metering module 2 comprises that model is the electrical energy metering chip U3 of AD71056, resistance R 9, R10, R11, capacitor C 13, C14, C15; Wherein the VDD of electrical energy metering chip U3, REF, S0, S1 pin are connected to the VDD power supply that power module 5 provides, the REF pin of electrical energy metering chip U3 is connected to capacitor C 13 and C14, and the AGND pin that the opposite side of capacitor C 13 and C14 is connected to is ground connection simultaneously; The CF pin of electrical energy metering chip U3 is connected to R10, and the opposite side contact resistance R9 of R10 as the output of electrical energy metering module 2, exports to information transfer module 3 by signal simultaneously; The RCLKIN of electrical energy metering chip U3 and S1 pin are respectively by resistance R 11 and capacitor C 15 ground connection; Information transfer module 3 comprises that model is the ZigBee chip U4 of CC2530, the E2PROM chip U6 that model is AT24C32, button S1, crystal oscillator Y1, Y2, resistance R 13, capacitor C 10, C11, C24, C25, C26; The P1_0 of ZigBee chip U4 and P0_7 pin are connected respectively SCL and the SDA pin of E2PROM chip U6; The RST pin of ZigBee chip U4 is connected with capacitor C 26, button S1 and resistance R 13, and the opposite side of resistance R 13 is connected to the 3V3 power supply that power module 5 provides; The p2_4/XCSC32K_Q1 of ZigBee chip U4 and p2_3/XCSC32K_Q2 pin are connected to the both sides of crystal oscillator Y1 simultaneously respectively by capacitor C 10, C11 ground connection, and the XCSC_Q1 of ZigBee chip U4 and XCSC_Q2 pin are connected to the both sides of crystal oscillator Y2 simultaneously respectively by capacitor C 24, C25 ground connection.
Fig. 1 is system architecture diagram, generated energy acquisition module 1 is after electrical network collects electric flux, the data that collect are sent into electrical energy metering module 2, after electrical energy metering module 2 is calculated, data are sent into information transfer module 3, information transfer module 3 sends to host computer by the wireless communication technology of ZigBee by signal, data also show in real time on display screen 4 simultaneously, and power module 5 is used for powering to generated energy acquisition module 1, electrical energy metering module 2, information transfer module 3 and display screen 4.
Fig. 2 is power module 5 schematic diagrams, and power module 5 has adopted the power supply chip U1 of LM1117-5, the power supply chip U2 that model is LM1117-3.3, transformer T1, full bridge rectifier D1; The secondary of transformer T1 is connected to the input of full bridge rectifier D1, and the output of full bridge rectifier D1 provides the power supply VCC of 15V, is connected to the input Vin pin of power supply chip U1 simultaneously; The output Vout pin of power supply chip U1 provides the power vd D of 5V, is connected to the input Vin pin of power supply chip U2 simultaneously; The output Vout pin of power supply chip U2 provides 3V3 power supply.
Fig. 3 is generated energy acquisition module 1 and electrical energy metering module 2 schematic diagrams, V2P, the V2N pin of electrical energy metering chip U3 are used for the alternate magnitude of voltage of power taking net two, VIP and V1N are for power taking net live wire current value, gained be all magnitude of voltage proportional to curtage, through electrical energy metering chip, U3 carries out digitized processing to the signal of electric current and voltage sample passage, forms data signal; Current channel, through phasing, makes current/voltage phase matched, then data signal is carried out to high-pass filtering afterwards, filters DC component; Now, treated voltage and current signal carries out multiplying again, and operation result is exactly the instantaneous power of subscriber's line circuit; Again instantaneous power is carried out to filtering afterwards, obtained the average active power of subscriber's line circuit; Average active power obtains the frequency signal being directly proportional to active power after conversion; The F1 of chip and F2 pin, output be the low frequency pulse being directly proportional to average active power, CF pin output be the pulse that becomes TE ratio with instantaneous active power.
Fig. 4 is information transfer module 3 schematic diagrams, information transfer module 3 as measurement data send, when control command receiving unit, need to use the AT24C32 chip in figure, with the user data loss storing in CC2530 chip after preventing from having a power failure, in the time of system blackout, will trigger the internal interrupt of CC2530 chip, CC2530 chip will write the whole user data that store in 24C02, after supply of electric power recovers, from the data of AT24C32 reading and saving.
Fig. 5 is display screen 4 schematic diagrams, and in current mini system, display screen 4 is as a requisite part and development trend, and the design has used the LCD display that model is JM12864, by serial line interface control.
This programme, by having adopted the technical method of advanced generated energy acquisition chip as generated energy acquisition module 1, has reached the technique effect that can precisely gather electric energy data; The technical method that has adopted the communication of ZigBee wireless sensing, has reached the technique effect that can realize electric flux remote detection; Adopt the method for the final access network based on ethernet of data, reached and be convenient to work about electric power personnel and manage, realized the intelligentized technique effect of electric energy metering system.
Should be understood that, above-mentioned detailed description of the invention of the present invention is only for exemplary illustration or explain principle of the present invention, and is not construed as limiting the invention. Therefore any amendment of, making, be equal to replacement, improvement etc., within protection scope of the present invention all should be included in without departing from the spirit and scope of the present invention in the situation that. In addition, claims of the present invention are intended to contain whole variations and the modification in the equivalents that falls into claims scope and border or this scope and border.
Claims (4)
1. the electric energy metering system based on wireless communication technology, is characterized in that: comprise generated energy acquisition module (1), electrical energy metering module (2), information transfer module (3), display screen (4), power module (5); Generated energy acquisition module (1) is connected to electrical energy metering module (2), the opposite side of electrical energy metering module (2) is connected to information transfer module (3), and the opposite side of information transfer module (3) is connected to display screen (4); Power module (5) is connected with generated energy acquisition module (1), electrical energy metering module (2), information transfer module (3) and display screen (4); Power module (5) comprises that model is the power supply chip U1 of LM1117-5, the power supply chip U2 that model is LM1117-3.3, transformer T1, full bridge rectifier D1; The secondary of transformer T1 is connected to the input of full bridge rectifier D1, and the output of full bridge rectifier D1 provides the power supply VCC of 15V, is connected to the input Vin pin of power supply chip U1 simultaneously; The output Vout pin of power supply chip U1 provides the power vd D of 5V, is connected to the input Vin pin of power supply chip U2 simultaneously; The output Vout pin of power supply chip U2 provides 3V3 power supply.
2. a kind of electric energy metering system based on wireless communication technology according to claim 1, it is characterized in that: generated energy acquisition module (1) comprises resistance R 1, R2, R3, R4, R5, R6, R7, R8, capacitor C 1, C2, C3, C4, C5, C6; Wherein capacitor C 1 is connected ground connection after the zero line of alternating current with resistance R 4; Resistance R 1 is connected in the phase line of alternating current, and the other end is connected to resistance R 3 by resistance R 2, and the opposite side of resistance R 3 is connected with capacitor C 2 and the rear ground connection of resistance R 5; Resistance R 7 is connected in the phase line of alternating current, and two ends are contact resistance R6, R8 respectively, and the opposite side of resistance R 6, R8 is respectively by ground connection after connection capacitor C 5, C6.
3. a kind of electric energy metering system based on wireless communication technology according to claim 1, it is characterized in that: electrical energy metering module (2) comprises that model is the electrical energy metering chip U3 of AD71056, resistance R 9, R10, R11, capacitor C 13, C14, C15; Wherein the VDD of electrical energy metering chip U3, REF, S0, S1 pin are connected to the VDD power supply that power module (5) provides, the REF pin of electrical energy metering chip U3 is connected to capacitor C 13 and C14, and the AGND pin that the opposite side of capacitor C 13 and C14 is connected to is ground connection simultaneously; The CF pin of electrical energy metering chip U3 is connected to R10, and the opposite side contact resistance R9 of R10 as the output of electrical energy metering module (2), exports to information transfer module (3) by signal simultaneously; The RCLKIN of electrical energy metering chip U3 and S1 pin are respectively by resistance R 11 and capacitor C 15 ground connection.
4. a kind of electric energy metering system based on wireless communication technology according to claim 1, it is characterized in that: information transfer module (3) comprises that model is the ZigBee chip U4 of CC2530, model is the E2PROM chip U6 of AT24C32, button S1, crystal oscillator Y1, Y2, resistance R 13, capacitor C 10, C11, C24, C25, C26; The P1_0 of ZigBee chip U4 and P0_7 pin are connected respectively SCL and the SDA pin of E2PROM chip U6; The RST pin of ZigBee chip U4 is connected with capacitor C 26, button S1 and resistance R 13, and the opposite side of resistance R 13 is connected to the 3V3 power supply that power module (5) provides; The p2_4/XCSC32K_Q1 of ZigBee chip U4 and p2_3/XCSC32K_Q2 pin are connected to the both sides of crystal oscillator Y1 simultaneously respectively by capacitor C 10, C11 ground connection, and the XCSC_Q1 of ZigBee chip U4 and XCSC_Q2 pin are connected to the both sides of crystal oscillator Y2 simultaneously respectively by capacitor C 24, C25 ground connection.
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| CN201610104908.6A CN105606889A (en) | 2016-02-26 | 2016-02-26 | Electric energy metering system based on wireless communication technology |
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| CN201610104908.6A CN105606889A (en) | 2016-02-26 | 2016-02-26 | Electric energy metering system based on wireless communication technology |
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Cited By (1)
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