CN2718588Y - Long-wave time service double-rate electric energy meter - Google Patents
Long-wave time service double-rate electric energy meter Download PDFInfo
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- CN2718588Y CN2718588Y CN 200420008410 CN200420008410U CN2718588Y CN 2718588 Y CN2718588 Y CN 2718588Y CN 200420008410 CN200420008410 CN 200420008410 CN 200420008410 U CN200420008410 U CN 200420008410U CN 2718588 Y CN2718588 Y CN 2718588Y
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Abstract
The utility model discloses a long-wave time service double-rate electric energy meter. The long-wave time service double-rate electric energy meter comprises a signal detection unit, a data protection circuit, a liquid crystal display (LCD) and digital tube light emitting diode (LED) display circuit, an electric energy impulse, an indicating lamp output part and an electric energy meter single chip. The electric energy meter single chip is composed of an electric energy metering module, a micro controller unit (MCU) and a long-wave signal receiving module. The long-wave signal receiving module is used for receiving the high precision long-wave time-frequency signal transmitted by the state time service center, so as to utilize the software to carry out the adjustment on the time. The synchronization and precision of the timing are guaranteed, and the cost is reduced.
Description
Technical field
The utility model relates to a kind of electric power meter, relates more specifically to the electric power meter of long wave time service.
Background technology
The multiple rate electric power meter principle of present existing full electronic as shown in Figure 1.Mainly comprise: detecting signal unit, ic for energy metering, microcontroller (MCU), liquid crystal display (LCD)/charactron (LED) display circuit, real time clock circuit, electrical energy pulse and pilot lamp output.
Described detecting signal unit is converted into the required signal of ic for energy metering with the voltage and current signal sampling.
Described electric energy metrical special chip is used for the voltage and current calculated signals is become electric weight, exports to the MCU numeration with the form of pulse.
Described microcontroller (MCU) is the control center of whole electric power meter, is used for being provided with rate, and control shows, the communication of realization and meter-copy device etc.
Described liquid crystal display (LCD)/charactron (LED) display circuit carries out electric weight peak, flat, the demonstration of valley and the indication of the various working conditions of electric power meter.
Described real-time timepiece chip is the base components that the electric weight timesharing is calculated, and adopts the clock of the calendar/clock chip of standard as system usually.
Described data protection circuit can guarantee effective storage of data under the situations such as power down, interference.
Whether described electrical energy pulse and pilot lamp output are used to indicate the electric energy metrical module in operate as normal.
The structure of existing various multiple rate electric power meters basically all as mentioned above, different places is the model difference that MCU, ic for energy metering, real-time timepiece chip are selected for use.This structural design is very high to the requirement of real-time clock, and the standard GB of multi-rate electric energy meter/T 15284-2002 has detailed regulation to the precision of clock.The precision of this scheme clock too relies on the precision of real time clock circuit, and the synchronism of clock can not guarantee.
Summary of the invention
The synchronism of the scheme clock of existing multiple rate electric power meter can not guarantee, and in order to guarantee the precision of timing, need carry out strict screening at devices such as clock circuit, crystal oscillators.In order to overcome these shortcomings, the utility model proposes the scheme that adopts the long wave time service that clock is adjusted, promptly the utility model proposes a kind of multiple rate electric power meter of long wave time service, the multiple rate electric power meter of described long wave time service realizes that by the following technical solutions the multiple rate electric power meter of described long wave time service comprises:
Detecting signal unit, this detecting signal unit is connected with electric energy metrical module in the electric energy meter single-chip, be used to carry out the voltage and current sampling, and the voltage and current signal after will sampling is input to the electric energy metrical module in the electric energy meter single-chip;
Data protection circuit, this circuit is connected with microcontroller (MCU) in the electric energy meter single-chip, is used to guarantee under the situation of power down and interference the effective storage to data;
Liquid crystal display (LCD)/charactron (LED) display circuit, this circuit is connected with microcontroller (MCU) in the electric energy meter single-chip, is used to carry out electric weight peak, flat, the demonstration of valley and the indication of the various working conditions of electric power meter;
Electrical energy pulse and pilot lamp output, whether this part is connected with electric energy metrical module in the electric energy meter single-chip, be used to indicate the electric energy metrical module in operate as normal;
The electric energy meter single-chip, this electric energy meter single-chip is made up of electric energy metrical module, microcontroller (MCU) and long-wave signal receiver module, described electric energy metrical module is connected with detecting signal unit, be used for and be converted to pulse signal from the electric power signal of signal detecting unit, export to microcontroller (MCU) numeration with the form of pulse; Described microcontroller (MCU) is connected with liquid crystal display (LCD)/charactron (LED) display circuit, data protection circuit, this microcontroller (MCU) is the control center of whole electric power meter, be used for being provided with rate, control shows, realizes the communication with meter-copy device; Described long-wave signal receiver module is connected with microcontroller (MCU), is used to receive the long wave time frequency signal, so that the time is adjusted.
Described MCU selects the crystal oscillator of 32.768kHz for use, and being used to provides the timing signal that produces calendar clock, and needed high frequency clock is obtained by phase-locked loop pll during the MCU operate as normal.
The beneficial effects of the utility model are: adopt the long wave time service, can guarantee the time synchronized of electric power meter, total system only needs the crystal oscillator of MCU, do not need special real time clock circuit, and avoided greatly reducing design cost like this for to prevent that clock accuracy is subjected to the required all effort done of environmental impact such as temperature on hardware and software.
Description of drawings
Fig. 1 is the structured flowchart of the multiple rate electric power meter of tradition.
Fig. 2 is the structured flowchart of the multiple rate electric power meter of long wave time service.
Embodiment
Fig. 1 is the structured flowchart of the multiple rate electric power meter of tradition.The structured flowchart of multiple rate electric power meter principle of existing full electronic and the multiple rate electric power meter of tradition has been described in the background technology part as shown in Figure 1.
Fig. 2 is the structured flowchart of the multiple rate electric power meter of long wave time service.The multiple rate electric power meter of described long wave time service comprises shown in Fig. 2 structured flowchart:
Detecting signal unit is used for voltage and current sampling, and the voltage and current signal after will sampling is input to the electric energy metrical module in the electric energy meter single-chip, by the electric energy metrical module electric power signal is converted to pulse signal then;
Data protection circuit, this circuit are used to guarantee under the situation of power down and interference the effective storage to data, and this circuit is connected with microcontroller (MCU) in the electric energy meter single-chip;
Liquid crystal display (LCD)/charactron (LED) display circuit, this circuit are used to carry out electric weight peak, flat, the demonstration of valley and the indication of the various working conditions of ammeter, and this circuit is connected with MCU in the electric energy meter single-chip.
Whether electrical energy pulse and pilot lamp output are used to indicate the electric energy metrical module in operate as normal, and this part is connected with electric energy metrical module in the electric energy meter single-chip;
The electric energy meter single-chip, this electric energy meter single-chip is made up of electric energy metrical module, microcontroller (MCU) and long-wave signal receiver module, described microcontroller (MCU) is the control center of whole electric power meter, be used for being provided with rate, control shows, realize and the communication of meter-copy device that described long-wave signal receiver module is used to receive the high precision long wave time frequency signal of national time service center emission, so that utilize software that the time is adjusted.
Described MCU selects the crystal oscillator of 32.768kHz for use, and being used to provides the timing signal that produces calendar clock, and needed high frequency clock is obtained by phase-locked loop pll during the MCU operate as normal.MCU adopts the crystal oscillator of 32.768K, obtain a second signal through behind the frequency division, the special circuit that carries by MCU inside produce divide and hour, calendar information such as date, regularly received the emission of national time service center every day by the long-wave signal receiver module in the electric energy meter single-chip high precision long wave time frequency signal utilizes software that the time is adjusted.
Claims (2)
1, a kind of multiple rate electric power meter of long wave time service, the multiple rate electric power meter of described long wave time service comprises:
Detecting signal unit, this detecting signal unit is connected with electric energy metrical module in the electric energy meter single-chip, be used to carry out the voltage and current sampling, and the voltage and current signal after will sampling is input to the electric energy metrical module in the electric energy meter single-chip;
Data protection circuit, this circuit is connected with microcontroller (MCU) in the electric energy meter single-chip, is used to guarantee under the situation of power down and interference the effective storage to data;
Liquid crystal display (LCD)/charactron (LED) display circuit, this circuit is connected with microcontroller (MCU) in the electric energy meter single-chip, is used to carry out electric weight peak, flat, the demonstration of valley and the indication of the various working conditions of electric power meter;
Electrical energy pulse and pilot lamp output, whether this part is connected with electric energy metrical module in the electric energy meter single-chip, be used to indicate the electric energy metrical module in operate as normal;
It is characterized in that: the multiple rate electric power meter of this long wave time service also comprises the electric energy meter single-chip, this electric energy meter single-chip is made up of electric energy metrical module, microcontroller (MCU) and long-wave signal receiver module, described electric energy metrical module is connected with detecting signal unit, be used for and be converted to pulse signal from the electric power signal of signal detecting unit, export to microcontroller (MCU) numeration with the form of pulse; Described microcontroller (MCU) is connected with liquid crystal display (LCD)/charactron (LED) display circuit, data protection circuit, this microcontroller (MCU) is the control center of whole electric power meter, be used for being provided with rate, control shows, realizes the communication with meter-copy device; Described long-wave signal receiver module is connected with microcontroller (MCU), is used to receive the long wave time frequency signal, so that the time is adjusted.
2, the multiple rate electric power meter of long wave time service according to claim 1, it is characterized in that: described microcontroller MCU selects the crystal oscillator of 32.768kHz for use, being used to provides the timing signal that produces calendar clock, and needed high frequency clock is obtained by phase-locked loop pll during microcontroller MCU operate as normal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420008410 CN2718588Y (en) | 2004-03-10 | 2004-03-10 | Long-wave time service double-rate electric energy meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420008410 CN2718588Y (en) | 2004-03-10 | 2004-03-10 | Long-wave time service double-rate electric energy meter |
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| Publication Number | Publication Date |
|---|---|
| CN2718588Y true CN2718588Y (en) | 2005-08-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 200420008410 Expired - Lifetime CN2718588Y (en) | 2004-03-10 | 2004-03-10 | Long-wave time service double-rate electric energy meter |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103792400A (en) * | 2012-10-29 | 2014-05-14 | 苏州工业园区新宏博通讯科技有限公司 | Electricity meter |
| CN105572470A (en) * | 2016-02-29 | 2016-05-11 | 江苏林洋能源股份有限公司 | Intelligent watt-hour meter and method of using BPC low frequency timing code for automatic timing |
| CN109116075A (en) * | 2018-10-22 | 2019-01-01 | 深圳市江机实业有限公司 | A kind of device that can indoors indicate current rate electricity price in real time |
| CN112748271A (en) * | 2020-12-01 | 2021-05-04 | 宁波三星医疗电气股份有限公司 | Electric energy meter and electric quantity metering method thereof |
-
2004
- 2004-03-10 CN CN 200420008410 patent/CN2718588Y/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103792400A (en) * | 2012-10-29 | 2014-05-14 | 苏州工业园区新宏博通讯科技有限公司 | Electricity meter |
| CN105572470A (en) * | 2016-02-29 | 2016-05-11 | 江苏林洋能源股份有限公司 | Intelligent watt-hour meter and method of using BPC low frequency timing code for automatic timing |
| CN109116075A (en) * | 2018-10-22 | 2019-01-01 | 深圳市江机实业有限公司 | A kind of device that can indoors indicate current rate electricity price in real time |
| CN112748271A (en) * | 2020-12-01 | 2021-05-04 | 宁波三星医疗电气股份有限公司 | Electric energy meter and electric quantity metering method thereof |
| CN112748271B (en) * | 2020-12-01 | 2022-11-04 | 宁波三星医疗电气股份有限公司 | Electric energy meter and electric quantity metering method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20140310 Granted publication date: 20050817 |