CN111273540A - Wireless timing system based on zigbee communication and Beidou dual-mode time service - Google Patents
Wireless timing system based on zigbee communication and Beidou dual-mode time service Download PDFInfo
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- CN111273540A CN111273540A CN202010295268.8A CN202010295268A CN111273540A CN 111273540 A CN111273540 A CN 111273540A CN 202010295268 A CN202010295268 A CN 202010295268A CN 111273540 A CN111273540 A CN 111273540A
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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
- G04R20/02—Setting the time according to the time information carried or implied by the radio signal the radio signal being sent by a satellite, e.g. GPS
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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
- G04R20/26—Setting the time according to the time information carried or implied by the radio signal the radio signal being a near-field communication signal
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- Mobile Radio Communication Systems (AREA)
- Synchronisation In Digital Transmission Systems (AREA)
Abstract
The invention discloses a wireless timing system based on zigbee communication and Beidou dual-mode time service, which comprises: the time service signal receiving unit is arranged outdoors and is used for receiving UTC standard time service signals transmitted by a GPS satellite/Beidou satellite; the timing signal transmitting unit is used for receiving the received UTC standard time service signal from the outdoor to the indoor through a ZigBee ad hoc network; and the timing unit is arranged indoors and used for receiving the UTC standard time service signal sent by the signal sending unit and calling the corresponding timing model to realize the correction of the indoor clock time based on the received UTC standard time service signal. The invention calls different increment-V3 models to realize automatic timing based on different data transmission time difference values, thereby reducing the timing error of the system and realizing high-precision clock synchronization.
Description
Technical Field
The invention relates to a wireless timing system, in particular to a wireless timing system based on zigbee communication and Beidou dual-mode time service.
Background
With the improvement of satellite time service technology, high-precision timepieces are mostly calibrated by receiving time service signals transmitted by satellites, however, antennas for receiving the time service signals are all erected outdoors, and when an indoor terminal timepiece needs to perform time calibration, cables need to be arranged indoors to transmit the time service signals.
Meanwhile, the existing timing system does not consider errors generated by data transmission time, and the whole timing error is increased to a certain extent.
Disclosure of Invention
In order to solve the problems, the invention provides a wireless timing system based on zigbee communication and Beidou dual-mode time service, cables do not need to be arranged indoors, and timing errors can be reduced.
In order to achieve the purpose, the invention adopts the technical scheme that:
a wireless timing system based on zigbee communication and big dipper dual-mode time service comprises:
the time service signal receiving unit is arranged outdoors and is used for receiving UTC standard time service signals transmitted by a GPS satellite/Beidou satellite;
the timing signal transmitting unit is used for receiving the received UTC standard time service signal from the outdoor to the indoor through a ZigBee ad hoc network;
and the timing unit is arranged indoors and used for receiving the UTC standard time service signal sent by the signal sending unit and calling the corresponding timing model to realize the correction of the indoor clock time based on the received UTC standard time service signal.
Further, the timing model adopts an inclusion-V3 model.
Furthermore, a timing unit is arranged in the timing signal transmission unit, the timing unit is started when the timing signal transmission unit receives the UTC standard time signal, and is closed when the timing unit receives the UTC standard time signal, the corresponding time difference value is output, and meanwhile, the zero clearing operation of the timing unit is realized.
Furthermore, the time correction unit calls the corresponding time correction model according to the time difference.
Further, the time correction unit calls a corresponding time correction model based on the nearest classifier according to the time difference value.
And the early warning module is started when the evaluation result falls into a preset threshold.
The standby time signal transmitting unit is started when the time difference evaluation result falls into a threshold, and is used for receiving the received UTC standard time signal from the outdoor to the indoor through the LoRa wireless communication module; a timing unit is also disposed in the standby timing signal transmitting unit.
The invention has the following beneficial effects:
the received UTC standard time service signal is received from the outdoor to the indoor based on the ZigBee ad hoc network and/or the LoRa wireless communication module, and cables do not need to be arranged in the indoor, so that the arrangement is easy.
And different increment-V3 models are called based on different data transmission time difference values to realize automatic timing, so that the timing error of the system is reduced, and high-precision clock synchronization is realized.
The evaluation of the working condition of the ZigBee ad hoc network is realized based on the evaluation of the data transmission time difference, and the LoRa wireless communication module is configured for standby, so that the fault of the whole system caused by the fault of the ZigBee ad hoc network can be avoided as much as possible.
Drawings
Fig. 1 is a system block diagram of a wireless timing system based on zigbee communication and beidou dual-mode time service in embodiment 1 of the present invention.
Fig. 2 is a system block diagram of a wireless timing system based on zigbee communication and beidou dual-mode time service in embodiment 2 of the present invention.
Detailed Description
In order that the objects and advantages of the invention will be more clearly understood, the invention is further described in detail below with reference to examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Example 1
As shown in fig. 1, an embodiment of the present invention provides a wireless timing system based on zigbee communication and beidou dual-mode time service, including:
the time service signal receiving unit is arranged outdoors and is used for receiving UTC standard time service signals transmitted by a GPS satellite/Beidou satellite;
the timing signal transmitting unit is used for receiving the received UTC standard time service signal from the outdoor to the indoor through a ZigBee ad hoc network; the timing signal transmission unit is internally provided with a timing unit which is started when the timing signal transmission unit receives the UTC standard timing signal and is closed when the timing unit receives the UTC standard timing signal, and a corresponding time difference value is output, and meanwhile, the zero clearing operation of the timing unit is realized;
the timing unit is arranged indoors and used for receiving the UTC standard time service signal sent by the signal sending unit, calling a corresponding timing model based on the nearest classifier according to the time difference value and realizing the correction of the indoor clock time based on the received UTC standard time service signal, wherein the timing model adopts an increment-V3 model; the input item of the Inception-V3 model is a UTC standard time service signal, and the output item is a correction parameter of each clock;
and the central processing unit is used for coordinating the work of the modules.
Example 2
As shown in fig. 2, an embodiment of the present invention provides a wireless timing system based on zigbee communication and beidou dual-mode time service, including:
the time service signal receiving unit is arranged outdoors and is used for receiving UTC standard time service signals transmitted by a GPS satellite/Beidou satellite;
the timing signal transmitting unit is used for receiving the received UTC standard time service signal from the outdoor to the indoor through a ZigBee ad hoc network; the timing signal transmission unit is internally provided with a timing unit which is started when the timing signal transmission unit receives the UTC standard timing signal and is closed when the timing unit receives the UTC standard timing signal, and a corresponding time difference value is output, and meanwhile, the zero clearing operation of the timing unit is realized;
the timing unit is arranged indoors and used for receiving the UTC standard time service signal sent by the signal sending unit, calling a corresponding timing model based on the nearest classifier according to the time difference value and realizing the correction of the indoor clock time based on the received UTC standard time service signal, wherein the timing model adopts an increment-V3 model;
the time difference evaluation unit is used for realizing the evaluation of the time difference based on the support vector machine, and when the evaluation result falls into a preset threshold (at the moment, the ZigBee ad hoc network falls into a preset fault threshold), the early warning module is started, and the sending of the early warning short message is realized through a mode of automatically editing and sending the short message;
the standby timing signal transmitting unit is started when the time difference value evaluation result falls into a threshold (meanwhile, the ZigBee ad hoc network is automatically closed), and is used for receiving the received UTC standard timing signal from the outdoor to the indoor through the LoRa wireless communication module; a timing unit is also arranged in the standby timing signal transmitting unit;
and the central processing unit is used for coordinating the work of the modules.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of the present invention, and these improvements and modifications should also be construed as the protection scope of the present invention.
Claims (7)
1. The utility model provides a wireless timing system based on zigbee communication and big dipper bimodulus time service which characterized in that: the method comprises the following steps:
the time service signal receiving unit is arranged outdoors and is used for receiving UTC standard time service signals transmitted by a GPS satellite/Beidou satellite;
the timing signal transmitting unit is used for receiving the received UTC standard time service signal from the outdoor to the indoor through a ZigBee ad hoc network;
and the timing unit is arranged indoors and used for receiving the UTC standard time service signal sent by the signal sending unit and calling the corresponding timing model to realize the correction of the indoor clock time based on the received UTC standard time service signal.
2. The wireless timing system based on zigbee communication and big dipper dual-mode time service as claimed in claim 1, wherein: the timing model adopts an inclusion-V3 model.
3. The wireless timing system based on zigbee communication and big dipper dual-mode time service as claimed in claim 1, wherein: the timing signal transmission unit is internally provided with a timing unit which is started when the timing signal transmission unit receives the UTC standard timing signal and is closed when the timing unit receives the UTC standard timing signal, and a corresponding time difference value is output, and meanwhile, the zero clearing operation of the timing unit is realized.
4. The wireless timing system based on zigbee communication and big dipper dual-mode time service as claimed in claim 1, wherein: and the time correction unit calls the corresponding time correction model according to the time difference.
5. The wireless timing system based on zigbee communication and big dipper dual-mode time service as claimed in claim 1, wherein: and the time correction unit calls a corresponding time correction model based on the nearest classifier according to the time difference value.
6. The wireless timing system based on zigbee communication and big dipper dual-mode time service as claimed in claim 1, wherein: the early warning system also comprises a time difference value evaluation unit which is used for realizing the evaluation of the time difference value based on the support vector machine, and when the evaluation result falls into a preset threshold, the early warning module is started.
7. The wireless timing system based on zigbee communication and big dipper dual-mode time service as claimed in claim 1, wherein: the standby time correction signal transmitting unit is started when the time difference value evaluation result falls into a threshold, and is used for receiving the received UTC standard time service signal from the outdoor to the indoor through the LoRa wireless communication module; a timing unit is also disposed in the standby timing signal transmitting unit.
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| CN202010295268.8A CN111273540B (en) | 2020-04-15 | 2020-04-15 | Wireless timing system based on zigbee communication and Beidou dual-mode time service |
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| CN202010295268.8A CN111273540B (en) | 2020-04-15 | 2020-04-15 | Wireless timing system based on zigbee communication and Beidou dual-mode time service |
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| CN111273540B CN111273540B (en) | 2022-06-28 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113568300A (en) * | 2021-09-22 | 2021-10-29 | 深圳心派科技有限公司 | GPS time service method, device, electronic equipment and storage medium |
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