CN105572470A - Intelligent watt-hour meter and method of using BPC low frequency timing code for automatic timing - Google Patents
Intelligent watt-hour meter and method of using BPC low frequency timing code for automatic timing Download PDFInfo
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- CN105572470A CN105572470A CN201610110471.7A CN201610110471A CN105572470A CN 105572470 A CN105572470 A CN 105572470A CN 201610110471 A CN201610110471 A CN 201610110471A CN 105572470 A CN105572470 A CN 105572470A
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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
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- G—PHYSICS
- G04—HOROLOGY
- G04R—RADIO-CONTROLLED TIME-PIECES
- G04R20/00—Setting the time according to the time information carried or implied by the radio signal
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Abstract
The invention discloses an intelligent watt-hour meter and a method of using a BPC low frequency timing code for automatic timing. The intelligent watt-hour meter comprises an MCU, and a power circuit, a power metering special chip, a communication module, a liquid crystal display module, a low frequency time code receiving circuit and a storage circuit connected with the MCU, wherein the low frequency time code receiving circuit is used for receiving a BPC low frequency timing code issued by the national time service center; the MCU of the watt-hour meter is used for analyzing the received time code; and according to the time information obtained through analysis, the reference clock for the watt-hour meter is corrected. As the watt-hour meter receives the reference time of the national time service center directly, the reference clock time of the watt-hour meter and the time of a standard clock can be ensured to be highly consistent.
Description
Technical field
The present invention relates to various single-phase, the clock of three-phase and multifunctional electric energy meter and other electric equipment higher to clock request, belong to electric equipment and manufacture field.
Background technology
At present, the load of electrical network is constantly change, sometimes there is peak of power consumption, sometimes there is low power consumption, when power supply equipment capacity is certain, if when power load is in peak, power load is greater than generation load, mains frequency can be caused to reduce, entail dangers to power grid security time serious, when power load is at a low ebb, generating set can not be fully used, system cloud gray model is very uneconomical, in order to improve security and the economy of operation of power networks, people improves electricity price for proposing when peak, the economic means of electricity price is reduced during low ebb, and this economic means will be realized, just require will there be timing accurately as the electric energy meter for Electro-metering benchmark, the metering circuit of traditional time-sharing electric energy meter adopts real-time clock (Real-TimeClock, abbreviation RTC) chip form, RTC has clock, calendar, alarm clock, periodic interruptions exports, the functions such as 32KHz clock output, ammeter utilizes the function self-clocking of RTC, thus realize the time-sharing measurement of electric energy meter.Generally the clocking error precision of RTC can reach ± 0.5S/d when 23 DEG C, although the precision of clock is very high, after running certain hour, accumulated error is still very large, therefore need timing to proofread clock, with guarantee clock with the standard time consistent correctly.Before automatic data logging starts, electric power enterprise is generally calibrated electric energy meter in each cycle of checking meter, irregular due to the cycle of checking meter, also irregular when causing school, simultaneously electric energy meter when designing for preventing school time equipment clock inaccurate, clocking error restriction during a school is often set, when clock error exceedes this limit value when this happens, clock just cannot proofread correct time again, set up after information acquisition system carries out automatic data logging, system can school according to main website time scheme within the scope of the clocking error of regulation, electric energy meter is calibrated, but its reference clock will forward through several link, the accuracy of clock also can be affected.The accuracy of the reference clock of main website also can be delivered to electric power meter end simultaneously.Have a power failure once generation, the clock of electric energy meter is then the normal operation relying on internal battery to maintain clock, and electric energy meter requires that Clock battery must remain normal and run 10 years at present, once cell malfunctions or dead battery capability, then clock just cannot ensure normal operation.
Summary of the invention
The object of the invention is the problem for ammeter clock alignment, intelligent electric energy meter and method that a kind of BPC of use low frequency time service code carries out automatic correcting time are proposed, electric energy meter utilizes the reference clock of built-in RTC as electric energy meter of MCU, electric energy meter built in radio receiving circuit, the BPC low frequency time service code that the national time service center of direct reception is issued, the MCU processor of electric energy meter is utilized to resolve the time-code received, according to the reference clock of resolving the temporal information auto modification electric energy meter obtained.
Technical scheme of the present invention is:
A kind of BPC of use low frequency time service code carries out the intelligent electric energy meter of automatic correcting time, it comprises MCU and the power circuit be attached thereto, electric energy metrical special chip, communication module, LCD MODULE, low-frequency time-code receiving circuit and memory circuit, the BPC low frequency time service code that described low-frequency time-code receiving circuit is issued for receiving national time service center, the MCU processor of electric energy meter is utilized to resolve the time-code received, according to the reference clock of resolving the temporal information correction electric energy meter obtained.
Low-frequency time-code receiving circuit of the present invention comprises signal receiving circuit, front-end amplifier, tuned amplifier, the first filtering circuit, signal conditioning circuit, the second filtering circuit and the detecting circuit of connecting successively.
The MCU built-in real-time clock module RTC of electric energy meter of the present invention.
Electric energy meter of the present invention also comprises the load control module and security authentication module that are connected with MCU.
Communication module of the present invention adopts infrared communication module.
Use BPC low frequency time service code to carry out a method for automatic correcting time, adopt the intelligent electric energy meter using BPC low frequency time service code to carry out automatic correcting time, it comprises the following steps:
(1) correlation parameter that the BPC low frequency time service code that, first initialization receives the issue of national time service center uses;
(2), receive BPC low frequency time service code, enter a 1S received code, check whether it is the 1S started, if not, repeat aforementioned activities, if so, enter all the other 19S of reception and encode; (the BPC code of China BPC transmitting station transmitting is 20 seconds one-periods, and first 1S does not have pulse)
(3), finish receiving after decode, decoded and carried out coding check, as incorrect, again received, as correctly, then carried out the adjustment of electric energy meter reference clock.
Beneficial effect of the present invention:
Electric energy meter of the present invention directly receives the reference time at national time service center, can guarantee that electric energy meter reference clock time is highly consistent with the time of standard time clock.Meanwhile, once there is Signal reception at need, when electric energy meter still can utilize the built-in RTC of MCU to proceed normally to walk in the built-in RTC of the MCU due to electric energy meter.
Accompanying drawing explanation
Fig. 1 is theory diagram of the present invention.
Fig. 2 is the theory diagram of low-frequency time-code receiving circuit of the present invention.
Fig. 3 is process flow diagram of the present invention.
Embodiment
Below in conjunction with drawings and Examples, the present invention is further illustrated.
As shown in Figure 1, it is the electric energy meter schematic diagram with BPC low frequency time service receiving circuit, compare with traditional time-sharing electric energy meter, add the BPC low frequency time service receiving circuit of low-power consumption, the clock check and correction technology of this electric energy meter utilizes the wireless time signal technology of reception long wave to carry out clock check and correction, and principle process is: 1. electric energy meter is received by built-in BPC low frequency time service receiving circuit (this circuit is a miniature low-consumption wireless electricity receiving system) and amplified this low-frequency wireless electricity time code signal.2. by MCU decoding clock signal.According to the reference clock of the temporal information auto modification electric energy meter obtained of decoding.So just allow the electric energy meter of all this signals of reception all consistent with the standard time at standard time time service center, also just make the time consistency of the reference clock of whole electric energy meter.
Fig. 2 is BPC low frequency time service receiving circuit block diagram, receiving antenna should receive by the real-time time signal of time service emission center from spatial impression, because the signal received is general more weak, to amplify through front-end amplifier, the signal feeding tuned amplifier that amplifier exports carries out frequency-selecting amplification and then carries out filtering, entering signal modulate circuit carries out shaping again, again after a filtering, tuning by detection, extraction time signal (i.e. a string regular pulse signal) from carrier wave, be input to MCU, when carrying out decoding school by MCU.
Fig. 3. be the software flow schematic diagram that electric energy meter receives BPC code, first initialization receives the correlation parameter used, the BPC code that China BPC transmitting station is launched is 20 seconds one-periods, first 1S does not have pulse, therefore first program enters a 1S reception, then check whether it is the 1S started, if not, repeat aforementioned activities, in this way, enter all the other 19S of reception to encode, decode after finishing receiving, decoded and entered coding check, as incorrect, again receive, as correctly, then carry out the adjustment of electric energy meter reference clock.
Electric energy meter calibration method of the present invention, utilize electric energy meter MCU built-in as reference clock, built in radio receiving circuit in electric energy meter, the BPC low frequency time service code that the national time service center of direct reception is issued, the MCU processor of electric energy meter is utilized to resolve the time-code received, according to the reference clock of resolving the temporal information auto modification electric energy meter obtained.Because electric energy meter directly receives the reference time at national time service center, can guarantee that electric energy meter reference clock time is highly consistent with the time of standard time clock.
The part that the present invention does not relate to prior art that maybe can adopt all same as the prior art is realized.
Claims (6)
1. the intelligent electric energy meter using BPC low frequency time service code to carry out automatic correcting time, it is characterized in that it comprises MCU and the power circuit be attached thereto, electric energy metrical special chip, communication module, LCD MODULE, low-frequency time-code receiving circuit and memory circuit, the BPC low frequency time service code that described low-frequency time-code receiving circuit is issued for receiving national time service center, the MCU processor of electric energy meter is utilized to resolve the time-code received, according to the reference clock of resolving the temporal information correction electric energy meter obtained.
2. use BPC low frequency time service code according to claim 1 carries out the intelligent electric energy meter of automatic correcting time, it is characterized in that low-frequency time-code receiving circuit comprises signal receiving circuit, front-end amplifier, tuned amplifier, the first filtering circuit, signal conditioning circuit, the second filtering circuit and the detecting circuit of connecting successively.
3. use BPC low frequency time service code according to claim 1 carries out the intelligent electric energy meter of automatic correcting time, it is characterized in that the MCU built-in real-time clock module RTC of electric energy meter.
4. use BPC low frequency time service code according to claim 1 carries out the intelligent electric energy meter of automatic correcting time, it is characterized in that electric energy meter also comprises the load control module and security authentication module be connected with MCU.
5. use BPC low frequency time service code according to claim 1 carries out the intelligent electric energy meter of automatic correcting time, it is characterized in that communication module adopts infrared communication module.
6. use BPC low frequency time service code to carry out a method for automatic correcting time, adopt the described use BPC low frequency time service code of one of claim 1-5 to carry out the intelligent electric energy meter of automatic correcting time, it is characterized in that, it comprises the following steps:
(1) correlation parameter that the BPC low frequency time service code that, first initialization receives the issue of national time service center uses;
(2), receive BPC low frequency time service code, enter a 1S received code, check whether it is the 1S started, if not, repeat aforementioned activities, if so, enter all the other 19S of reception and encode;
(3), finish receiving after decode, decoded and carried out coding check, as incorrect, again received, as correctly, then carried out the adjustment of electric energy meter reference clock.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610110471.7A CN105572470A (en) | 2016-02-29 | 2016-02-29 | Intelligent watt-hour meter and method of using BPC low frequency timing code for automatic timing |
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| CN201610110471.7A CN105572470A (en) | 2016-02-29 | 2016-02-29 | Intelligent watt-hour meter and method of using BPC low frequency timing code for automatic timing |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106530769A (en) * | 2016-10-27 | 2017-03-22 | 晋城市通平交通科技有限公司 | Solar road warning light and electric wave time synchronization signal decoding method |
| CN106873464A (en) * | 2017-03-22 | 2017-06-20 | 深圳市中航世星科技有限公司 | A kind of airborne distributed parallel computing environment of restructural and method |
| CN106940523A (en) * | 2017-03-28 | 2017-07-11 | 北京智芯微电子科技有限公司 | A kind of time service device based on low-frequency time-code technology |
| CN110829590A (en) * | 2019-10-10 | 2020-02-21 | 广州炫通电气科技有限公司 | Intelligent monitoring system, method, platform and storage medium for transformer area line loss |
| CN116755319A (en) * | 2023-08-18 | 2023-09-15 | 青岛鼎信通讯股份有限公司 | Electric energy meter clock system, control method and device, computer equipment and medium |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106530769A (en) * | 2016-10-27 | 2017-03-22 | 晋城市通平交通科技有限公司 | Solar road warning light and electric wave time synchronization signal decoding method |
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| CN106940523A (en) * | 2017-03-28 | 2017-07-11 | 北京智芯微电子科技有限公司 | A kind of time service device based on low-frequency time-code technology |
| CN110829590A (en) * | 2019-10-10 | 2020-02-21 | 广州炫通电气科技有限公司 | Intelligent monitoring system, method, platform and storage medium for transformer area line loss |
| CN110829590B (en) * | 2019-10-10 | 2023-12-26 | 广州炫通电气科技有限公司 | Intelligent monitoring system, method, platform and storage medium for line loss of transformer area |
| CN116755319A (en) * | 2023-08-18 | 2023-09-15 | 青岛鼎信通讯股份有限公司 | Electric energy meter clock system, control method and device, computer equipment and medium |
| CN116755319B (en) * | 2023-08-18 | 2023-11-21 | 青岛鼎信通讯股份有限公司 | Electric energy meter clock system, control method and device, computer equipment and medium |
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Effective date of registration: 20160720 Address after: Qidong City, Jiangsu province 226200 Nantong City Lin Yang Lu No. 666 Applicant after: JIANGSU LINYANG ENERGY CO., LTD. Applicant after: Electric Power Sciences Research Institute of State Grid Jibei Electric Power Company Limited Address before: Qidong City, Jiangsu province 226200 Nantong City Lin Yang Lu No. 666 Applicant before: JIANGSU LINYANG ENERGY CO., LTD. |
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