CN214627384U - Time synchronization device based on wireless network - Google Patents
Time synchronization device based on wireless network Download PDFInfo
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- CN214627384U CN214627384U CN202120518878.XU CN202120518878U CN214627384U CN 214627384 U CN214627384 U CN 214627384U CN 202120518878 U CN202120518878 U CN 202120518878U CN 214627384 U CN214627384 U CN 214627384U
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Abstract
The utility model provides a time synchronizer based on wireless network, which comprises a wiring terminal, a time source receiving unit, a data processing unit wireless communication unit and a power management unit; the time source receiving unit is used for receiving an external input time source signal, one end of the time source receiving unit is connected with a wiring terminal of the time synchronization device, the other end of the time source receiving unit is connected with the data processing unit, the data processing unit is connected with the wireless communication unit, and the time source receiving unit, the data processing unit and the wireless communication unit are all connected with the power management unit. The utility model discloses a time synchronizer based on wireless network to wireless communication network has replaced traditional cable conductor and has connected, has reduced entire system's wiring quantity, thereby has improved the work efficiency that the field device deployed under the prerequisite of guaranteeing the time service precision, has reduced the interim wiring quantity in the field simultaneously and has great promotion on the aspect of the safe operation than traditional time setting scheme on the security.
Description
Technical Field
The utility model belongs to electric power automation trade specifically is a time synchronizer based on wireless network.
Background
In the daily work of power distribution operation and maintenance management, the time synchronization device of the power system has very important significance for analyzing the state of the power grid in real time and guaranteeing the operation safety of the power grid. At present, time synchronization devices based on satellite signals are arranged in high-voltage transformer substations in China, secondary protection equipment and measurement and control equipment in the transformer substations acquire time synchronization signals from a screen of the time synchronization device in the whole transformer substations in a wired connection mode, and clocks of the secondary protection equipment and the measurement and control equipment are calibrated to achieve time synchronization between the secondary equipment in the whole transformer substations.
In the prior art, each device acquires a time tick signal from a total station time synchronization device in a wired signal manner (including an optical fiber, a twisted pair, a network cable and the like), and the connecting lines are planned and designed at the beginning of the construction of a transformer substation and are embedded into a cable trench. However, in the maintenance process, a worker needs to deploy some detection devices temporarily in the station, if the devices need time synchronization signals, it is difficult to access the time synchronization signals one by one from the screen of the total-station time synchronization device, and meanwhile, the additionally led-out cable exposed outside the device screen cabinet does not meet the requirements of safety production in a live-line operation, and thus, the potential safety hazard is not small.
SUMMERY OF THE UTILITY MODEL
In view of this, in order to solve the problem that exists among the prior art, the utility model provides a time synchronization device based on wireless network.
The technical scheme of the utility model as follows:
a wireless network based time synchronization apparatus, comprising: the system comprises a wiring terminal, a time source receiving unit, a data processing unit, a wireless communication unit and a power management unit; the time source receiving unit is used for receiving an external input time source signal, one end of the time source receiving unit is connected with a wiring terminal of the time synchronization device, the other end of the time source receiving unit is connected with the data processing unit, the data processing unit is connected with the wireless communication unit, and the time source receiving unit, the data processing unit and the wireless communication unit are all connected with the power management unit.
Furthermore, an external time source signal is accessed into the time synchronization device through the wiring terminal, and is converted into a TTL signal after being processed by the time source receiving unit and is transmitted to the data processing unit.
Furthermore, the data processing unit is formed by taking an ARM core singlechip as a core and matching with necessary peripheral circuits and devices.
Further, the wireless communication unit broadcasts and transmits the received information in a wireless signal mode according to the instruction and the data information transmitted by the data processing unit.
Further, the power management unit steps down or steps up the device input voltage through the power management chip according to the rated voltage required by the operation of each unit specific circuit, and then transmits the device input voltage to the related specific circuit to provide the power supply required by the normal operation of each unit.
Compared with the prior art, the beneficial effects of the utility model are as follows:
a time synchronizer based on wireless network to wireless communication network has replaced traditional cable conductor and has connected, has reduced entire system's wiring quantity, thereby has improved the work efficiency that the field device deployed under the prerequisite of guaranteeing the time service precision, reduced on-the-spot interim wiring quantity simultaneously and compared tradition to time scheme have great promotion in the aspect of the safe operation on the security.
Drawings
Fig. 1 is a schematic structural diagram of a wireless network-based time synchronizer provided by the present invention;
fig. 2 is a schematic structural diagram of a specific application environment of the present invention.
Detailed Description
The technical solutions in the embodiments will be described clearly and completely with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by a person skilled in the art without any inventive work based on the embodiments belong to the protection scope of the present invention.
Unless otherwise defined, technical or scientific terms used in the embodiments of the present application should have the ordinary meaning as understood by those having ordinary skill in the art. The use of "first," "second," and similar terms in the present embodiments does not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. "mounted," "connected," and "coupled" are to be construed broadly and may, for example, be fixedly coupled, detachably coupled, or integrally coupled; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. "Upper," "lower," "left," "right," "lateral," "vertical," and the like are used solely in relation to the orientation of the components in the figures, and these directional terms are relative terms that are used for descriptive and clarity purposes and that can vary accordingly depending on the orientation in which the components in the figures are placed.
As shown in fig. 1, the embodiment of the present invention provides a time synchronization device based on wireless network, including: a wiring terminal 101, a time source receiving unit 102, a data processing unit 103, a wireless communication unit 104, and a power management unit 105; the time source receiving unit 102 is used for receiving an external input time source signal, one end of the time source receiving unit 102 is connected with the wiring terminal 101 of the time synchronization device, the other end of the time source receiving unit is connected with the data processing unit 103, the data processing unit 103 is connected with the wireless communication unit 104, and the time source receiving unit 102, the data processing unit 103 and the wireless communication unit 104 are all connected with the power management unit 105.
Specific external time source signals are connected to the time synchronization device through the wiring terminal 101, and are converted into TTL signals after being processed by the time source receiving unit 102 and transmitted to the data processing unit 103. The external time source signal includes but is not limited to a satellite time synchronization signal, an RS-232 serial port signal, an RS485 serial port signal, an optical fiber signal and the like.
It should be noted that how the time source receiving unit 102 receives and processes the external time source signal is different in the circuit of the time source receiving unit 102 according to the type of the external time source signal, but all of them fall into the category of the time source receiving unit described in this embodiment.
The data processing unit 103 is formed by taking an ARM core singlechip as a core and matching with necessary peripheral circuits and devices. After receiving the TTL signal sent by the time source receiving unit 102, the data processing unit 103 obtains time information included in the external time source signal after processing such as checking signal validity and decoding time source information through a program, and performs synchronization processing on the system clock of the data processing unit 103 to make the clock of the data processing unit 103 highly consistent with the external time source, so as to meet the error requirement of time synchronization, and then sends the system time to the wireless communication unit 104 in a certain communication manner after encoding processing.
The wireless communication unit 104 broadcasts and transmits the received information in a wireless signal mode according to the instruction and the data information transmitted by the data processing unit 103, so that all devices needing wireless time service in an application scene can be applied. At present, there are many ways of wirelessly transmitting data, such as WIFI, Bluetooth, Sub-1G, zigbee, NB _ IOT, LoRa, etc. These transmission methods are well-established technologies, and will not be described again, but all belong to the category indicated by the wireless communication unit in the embodiment, and the embodiment may select one of the methods as the wireless communication method according to the specific use environment and the use requirement.
The power management unit 105 steps down or steps up the device input voltage through the power management chip according to the rated voltage required by the operation of each unit specific circuit, and then transmits the device input voltage to the relevant specific circuit to provide the power supply required by the normal operation of each unit.
In this embodiment, each functional unit is concentrated on one PCB, and the physical connection between the functional modules is realized by printed circuit copper wires on the PCB.
As shown in fig. 2, as a standard time source, a time synchronizer 201 based on a wireless network 201 provides a plurality of distributed time-service devices 203 with high-precision and reliable time service signals, so as to achieve the aim of time synchronization among multiple field devices.
The utility model discloses not be limited to the specific details among the above-mentioned embodiment the utility model discloses a within the technical idea scope, can be right the technical scheme of the utility model carry out multiple simple variant, these simple variants all belong to the utility model discloses a protection scope. The various features described in the foregoing detailed description may be combined in any suitable manner without departing from the scope of the invention. In order to avoid unnecessary repetition, the present invention does not separately describe various possible combinations.
Claims (5)
1. A time synchronization apparatus based on a wireless network, characterized in that: the method comprises the following steps: the device comprises a wiring terminal (101), a time source receiving unit (102), a data processing unit (103), a wireless communication unit (104) and a power management unit (105); the time source receiving unit (102) is used for receiving an external input time source signal, one end of the time source receiving unit is connected with a wiring terminal (101) of the time synchronization device, the other end of the time source receiving unit is connected with the data processing unit (103), the data processing unit (103) is connected with the wireless communication unit (104), and the time source receiving unit (102), the data processing unit (103) and the wireless communication unit (104) are all connected with the power management unit (105).
2. The wireless network based time synchronization apparatus of claim 1, wherein: an external time source signal is connected to the time synchronization device through a wiring terminal (101), and is converted into a TTL signal after being processed by the time source receiving unit (102) and is transmitted to the data processing unit (103).
3. The wireless network based time synchronization apparatus of claim 1, wherein: the data processing unit (103) is formed by taking an ARM core singlechip as a core and matching with necessary peripheral circuits and devices.
4. The wireless network based time synchronization apparatus of claim 1, wherein: the wireless communication unit (104) broadcasts and transmits the received information in a wireless signal mode according to the instruction and the data information transmitted by the data processing unit (103).
5. The wireless network based time synchronization apparatus of claim 1, wherein: the power management unit (105) reduces or increases the device input voltage through the power management chip according to the rated voltage required by the operation of each unit specific circuit, and then transmits the voltage to the related specific circuit to provide the power supply required by the normal operation of each unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120518878.XU CN214627384U (en) | 2021-03-11 | 2021-03-11 | Time synchronization device based on wireless network |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120518878.XU CN214627384U (en) | 2021-03-11 | 2021-03-11 | Time synchronization device based on wireless network |
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| Publication Number | Publication Date |
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| CN214627384U true CN214627384U (en) | 2021-11-05 |
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| CN202120518878.XU Active CN214627384U (en) | 2021-03-11 | 2021-03-11 | Time synchronization device based on wireless network |
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2021
- 2021-03-11 CN CN202120518878.XU patent/CN214627384U/en active Active
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