NBIOT sensing equipment, period synchronous acquisition method and device thereof, and medium

Abstract

The invention discloses NBIOT sensing equipment, a period synchronous acquisition method and device thereof and a computer readable storage medium, and the method is applied to the NBIOT sensing equipment and comprises the steps: presetting a time length in advance to carry out the time synchronization with a base station before a periodic acquisition time point of the self-walking of the NBIOT sensing equipment arrives; wherein the preset duration is less than the acquisition period; updating and determining the real duration of the machine period of the NBIOT sensing equipment according to the historical time synchronization result and the current time synchronization result; and determining the machine period number away from the period acquisition time point according to the real duration of the machine period so as to acquire data at the period acquisition time point. The real duration of the machine period of the NBIOT sensing equipment is calculated according to the time synchronization result of the NBIOT sensing equipment and the base station, so that synchronous data acquisition can be accurately realized; according to the method, a synchronization server does not need tobe arranged, the performance is stable, the communication energy consumption is low, and the method can be effectively suitable for an NBIOT network.

Description

technical field [0001] The present application relates to the technical field of the Internet of Things, and in particular to an NBIOT sensing device and its period synchronization acquisition method, device and computer-readable storage medium. Background technique [0002] With the advancement of NBIOT (Narrow Band Internet of Things, narrowband Internet of Things) technology, wireless sensors are more widely used in industrial data collection sites. However, different wireless sensors may have differences in hardware, software, crystal oscillator and travel time accuracy, and there is also a time delay in wireless communication. Therefore, how to realize high-precision synchronous measurement among multiple wireless sensing devices is very important. [0003] In the prior art, this problem is generally solved by using the synchronous server to shout the beat. Utilizing a synchronization server deployed in the wireless network, it can continue to broadcast "calling beats...

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Problems solved by technology

[0004] However, the one-to-many communication between the synchronization server and each wireless sensor is only suitable for a small-scale private network, such as a ZigBee network

And, importantly, in order to ensure synchronization accuracy, the above methods in the prior art require long-term continuous online communication, which consumes a lot of power. However, due to the explosion-proof and moisture-proof requirements of industrial sites, wireless sensor applications in complex industrial sites The device generally needs to be sealed with glue, and it is impossible or difficult to replace the battery. Therefore, the above method will make it difficult for the battery of the wireless sensor device to withstand more than one year.

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