Time synchronization method and device based on Internet of Things, computer and storage medium
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A time synchronization and Internet of Things technology, applied in time division multiplexing systems, electrical components, transmission systems, etc., can solve problems such as high cost and insecure clocks, and achieve the effect of improving reliability and reducing costs.
Active Publication Date: 2020-10-30
石化盈科信息技术有限责任公司
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Time is the basic parameter of information space and physical space, and in the industrial Internet of Things, there is a strong timing constraint relationship between devices, such as the collaborative operation of industrial robots, but it is too expensive to install a clock synchronization device on each device. high, and callbacks to cloud-based clocks are not safe, therefore, clock synchronization technology is particularly important for IIoT
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[0057] In order to make the purpose, technical solution and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present application, and are not intended to limit the present application.
[0058] In one embodiment, such as Figure 1A As shown, a time synchronization method based on the Internet of Things is provided, which includes:
[0059] Step 110, acquire the current system time to be corrected by the system.
[0060] In this embodiment, the system is a system connected to the Industrial Internet of Things. The system time to be corrected is the current system time, that is, the time to be corrected. It should be understood that there are multiple systems connected to the Industrial Internet of Things, such as video surveillance systems, perimeter alar...
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Abstract
The invention provides a time synchronization method and device based on the Internet of Things, a computer and a storage medium. The method comprises the steps of: obtaining the current to-be-corrected system time of a system; obtaining current reference time; calculating to obtain a time difference value between the to-be-corrected system time and the reference time; correcting the time data tobe written into the preset database according to the time difference; writing the corrected time data into a preset database; transmission to an internet-of-things platform, obtaining a time difference value between current to-be-corrected system time of a system and reference time through calculation; storing the time difference value, so that the time of each system accessed to the Internet of Things can be corrected through the corresponding time difference value, the time of each system in the Internet of Things can be unified, the time synchronization of each system is realized, time synchronization equipment does not need to be independently arranged for each system, the cost is effectively reduced, the scheduling and production coordination of daily production are facilitated, and the reliability of each system is improved.
Description
technical field [0001] The present invention relates to the technical field of system time synchronization based on the Internet of Things, in particular to a time synchronization method, device, computer and storage medium based on the Internet of Things. Background technique [0002] At present, many systems are used in industrial production, such as video surveillance system, perimeter alarm system, MES system, automatic fire alarm system, DCS system, SIS system, access control system, large unit monitoring system, flammable gas alarm system, toxic Hazardous gas alarm system, metering system, energy management system, dispatching telephone system, fire telephone system, laboratory management system, real-time database system, environmental monitoring system, emergency command system, material management system, etc. [0003] These systems are factory on-site systems built in different years. Each system is self-contained, and the clock time of each system is different. Th...
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