CN103684527A - Power-line carrier network communication module with time service function - Google Patents
Power-line carrier network communication module with time service function Download PDFInfo
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- CN103684527A CN103684527A CN201210339261.7A CN201210339261A CN103684527A CN 103684527 A CN103684527 A CN 103684527A CN 201210339261 A CN201210339261 A CN 201210339261A CN 103684527 A CN103684527 A CN 103684527A
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Abstract
A power-line carrier network communication module with a time service function comprises a power source circuit, an interface circuit, a main control processor, a carrier transceiver circuit and an oscillator circuit and is characterized in that the main control processor comprises a main control module, a carrier modem and a time service signal transmitting and receiving module, wherein the main control module is connected with the time service signal transmitting and receiving module; the time service signal transmitting and receiving module is connected with the carrier modem; the carrier transceiver circuit is connected with the carrier modem and used for the amplification-transmitting and filter-receiving of power-line carrier signals; the oscillator circuit is connected with the main control module and used for providing a clock reference for the main control processor; the interface circuit is connected with the main control module and can be connected with other communication devices; the power source circuit is connected with the main control module and used for supplying power to the whole communication device. According to the invention, the high-precision time service function is integrated into the power-line carrier module, thereby solving the problem of large accumulative errors of real-time clock chips, and reducing the costs of smart electric meters.
Description
Technical field
The invention belongs to power-line carrier communication field, relate to a kind of power line carrier network communication module with time service function.
Background technology
Step price scheme was formally implemented in China in 1 day July in 2012; And multiple rate electricity price scheme is also expected to implement in the near future.The prerequisite of multiple rate electricity price scheme implementation is the accurate timing of intelligent electric meter.For the intellectuality of power supply enterprise, informatization, rate electricity price scheme again only, the statistical management of other a lot of technical indicators, all needs the accurate timing of intelligent electric energy meter.At present, the accurate clocking capability of intelligent electric energy meter, is to be completed by its inner realtime clock chip, and considers power-off condition, must be aided with the standby lithium battery of large capacity one-time.For using realtime clock chip to add the technical scheme of standby lithium battery, although the accuracy of timekeeping of realtime clock chip itself is at-40 ℃ to+85 ℃ total temperature scope Nei Keda 3.4PPM, but because do not possess periodic calibration mechanism, so the long-term accumulated error of using is very considerable, and realtime clock chip and lithium battery cost are high, have increased implementation cost.
Summary of the invention
The object of this invention is to provide a kind of power line carrier network communication module with time service function, in alternative current intelligent electric meter, realtime clock chip adds the accurate timing solution of standby lithium battery, by this module, to intelligent electric meter, provide automatic high accuracy time service to serve, realize the accurate timing of intelligent electric meter; Reduce costs simultaneously.
To achieve these goals, the technical solution used in the present invention is:
A kind of power line carrier network communication module with time service function, comprise power circuit, interface circuit, main control processor, carrier transmitting-receiving circuit, pierce circuit, it is characterized in that: described main control processor comprises main control module, carrier modem and time signal sending/receiving module, described main control module is connected with time signal sending/receiving module, and described time signal sending/receiving module is connected with carrier modem; Carrier transmitting-receiving circuit connects carrier modem, for amplification transmission and the filtering reception of power line carrier signal; Pierce circuit connects main control module, for providing clock reference to main control processor; Interface circuit connects main control module, for being connected with other communicator; Power circuit is connected with main control module, gives whole communicator power supply.
Further, described pierce circuit uses common 20PPM(-40 ℃ to+85 ℃ of total temperatures) quartz resonator.
Further, a kind of intelligent electric meter that the power line carrier network communication module with time service function is installed, is characterized in that: the communication port of described intelligent electric meter is connected with the interface circuit of described power line carrier network communication module.
The invention has the beneficial effects as follows:
1, the present invention has been integrated into high accuracy time service function in power line carrier module, intelligent electric meter is used after this module, can carry out per diem, even by the hour precision time service, error is in 1 millisecond, solved the large problem of realtime clock chip accumulated error, thereby met the needs of the accurate timing of intelligent electric meter, increased substantially the timing accuracy of intelligent electric meter under long-term service condition;
2, realtime clock chip and the standby lithium battery as the indispensable element of intelligent electric meter can be saved, the manufacturing cost of intelligent electric meter can be significantly reduced.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention
In figure:
1, power circuit 2, interface circuit
3, main control processor 4, carrier transmitting-receiving circuit
5, pierce circuit
Embodiment
Below in conjunction with accompanying drawing, a kind of embodiment of the present invention is made to brief description.
As shown in Figure 1, the power line carrier network communication module with high accuracy time service function, the present invention includes power circuit 1, interface circuit 2, main control processor (comprising carrier modem and time signal sending/receiving module) 3, carrier transmitting-receiving circuit 4, pierce circuit 5.Main control processor 3 comprises power line carrier modem, adopts direct sequence spread spectrum, and BPSK debugs demodulation mode; Comprise the main control module and the time signal sending/receiving module that possess 8051 kernels simultaneously, can sending and receiving time signal, the sending and receiving of time signal at most only needs 1 millisecond.Carrier transmitting-receiving circuit 4 connects main control processor 3, for amplification transmission and the filtering reception of power line carrier signal.Pierce circuit 5 uses within the scope of 20PPM(-40 ℃ to+85 ℃ common total temperature) quartz resonator, connect main control processor 3, for providing clock reference to main control processor.Interface circuit 2 connects main control processor 3, for being connected with other communicator.Power circuit 1 is connected with main control processor 3, gives whole communicator power supply.
The present invention is after the time service order that receives regular length and form, extract the temporal information of time service order delivery time wherein, carry out, after corresponding compensation of delay, by interface circuit 2, sending to intelligent electric meter the current correct time after intelligent electric meter can be upgraded.Because time service order can per diem be sent even by the hour, so the present invention can use common quartz resonator to carry out the accurate timing (day error is in 2 seconds) of short time, substitute the long-time accurately timing of the high-precision real clock chip of intelligent electric meter inside, and thoroughly eliminated the accumulated error of realtime clock chip.The present invention can also forward time service order to the carrier module of other node by power line, to realize the time service function of all nodes of whole power line carrier network.
After the present invention powers on, can carry out reception, transmission and the forwarding of normal carrier commands.When the present invention receives after the time service order of regular length that concentrator or other the present invention send and form, whether the automatic detection of hardware receives time signal, if receive time signal, primary control program extracts year, month, day, hour, min, second, the millisecond information in time service order; Otherwise abandon order.Because the moment that this temporal information is sent corresponding to time service order, so also will deduct again the required fixing transmission time of time service order (being determined by order length and carrier transmission speed), deduct again time signal transmission and receive required 1 millisecond, be accurate to exactly the current time of Millisecond, primary control program is stored this current correct time, after precompensation, (deduct the transmission time that sends to intelligent electric meter, and etc. until whole second constantly), by interface circuit 2, send to intelligent electric meter, the current correct time after intelligent electric meter can be upgraded.If the present invention receives the carrier commands of the transmission time service order that concentrator or other the present invention send,, according to the current time of the timer operation by main control processor, by power line, send the carrier wave time service order that includes current time.If address of the present invention appears in the transistroute table of carrier wave time service order, the relay forwarding that carries out carrier wave time service order.
Above an example of the present invention is had been described in detail, but described content is only preferred embodiment of the present invention, can not be considered to for limiting practical range of the present invention.All equalization variations of doing according to the present patent application scope and improvement etc., within all should still belonging to patent covering scope of the present invention.
Claims (3)
1. a power line carrier network communication module with time service function, comprise power circuit, interface circuit, main control processor, carrier transmitting-receiving circuit, pierce circuit, it is characterized in that: described main control processor comprises main control module, carrier modem and time signal sending/receiving module, described main control module is connected with time signal sending/receiving module, and described time signal sending/receiving module is connected with carrier modem; Carrier transmitting-receiving circuit connects carrier modem, for amplification transmission and the filtering reception of power line carrier signal; Pierce circuit connects main control module, for providing clock reference to main control processor; Interface circuit connects main control module, for being connected with other communicator; Power circuit is connected with main control module, gives whole communicator power supply.
2. power line carrier network communication module according to claim 1, is characterized in that: described pierce circuit uses common 20PPM quartz resonator.
3. the intelligent electric meter that power line carrier network communication module claimed in claim 1 is installed, is characterized in that: the communication port of described intelligent electric meter is connected with the interface circuit of described power line carrier network communication module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210339261.7A CN103684527A (en) | 2012-09-13 | 2012-09-13 | Power-line carrier network communication module with time service function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210339261.7A CN103684527A (en) | 2012-09-13 | 2012-09-13 | Power-line carrier network communication module with time service function |
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| Publication Number | Publication Date |
|---|---|
| CN103684527A true CN103684527A (en) | 2014-03-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210339261.7A Pending CN103684527A (en) | 2012-09-13 | 2012-09-13 | Power-line carrier network communication module with time service function |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106788662A (en) * | 2017-03-29 | 2017-05-31 | 北京智芯微电子科技有限公司 | A kind of relaying time service device based on low-frequency time-code technology |
| CN113031028A (en) * | 2021-02-26 | 2021-06-25 | 北京中宸微电子有限公司 | Intelligent terminal for timing by using multi-satellite timing system and timing method |
-
2012
- 2012-09-13 CN CN201210339261.7A patent/CN103684527A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106788662A (en) * | 2017-03-29 | 2017-05-31 | 北京智芯微电子科技有限公司 | A kind of relaying time service device based on low-frequency time-code technology |
| CN113031028A (en) * | 2021-02-26 | 2021-06-25 | 北京中宸微电子有限公司 | Intelligent terminal for timing by using multi-satellite timing system and timing method |
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Application publication date: 20140326 |