Remote transmission meter wake-up method and device based on linear feedback shift

Abstract

The invention relates to a remote transmission meter wake-up method and device based on linear feedback shift. The method comprises the following steps: acquiring a meter address of a remote transmission meter, setting a tap sequence according to the meter address, constructing a coding model and a decoding model by using the tap sequence based on a linear feedback shift algorithm, and calculating a wake-up signal by the coding model; by a sender, sending a continuous wake-up signal to the remote transmission meter; in the current interception period, using the decoding model for carrying out validity judgment on the wake-up signal received by the remote transmission meter; when the wake-up signal is effective and the current interception period is not ended, waking up the remote transmission meter and entering an effective communication waiting state; and when the wake-up signal is not effective, keeping the remote transmission meter in a dormant state. According to the method and the device, the non-wake-up signal can be quickly eliminated in a short interception period with high probability, so that the operation power consumption of the wireless remote transmission meter is reduced, the operation and maintenance cost is reduced, and the application potential of the energy metering remote transmission meter such as water, gas and heat meters is improved.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, and more specifically, to a remote meter wake-up method and device based on linear feedback shift. Background technique [0002] The promotion and application of remote metering meters with remote automatic data collection functions such as smart electricity, water, gas, and heat meters is a basic measure to promote the construction of "Internet +" smart energy and smart cities. At present, most remote meters such as water, gas, and heat cannot be connected to external power supply due to the constraints of the installation environment, and the construction of wired communication lines is relatively large. In contrast, remote meters using wireless communication are easy to construct , Data acquisition cost is low, has good development prospects, and its proportion in the entire remote meter market is increasing year by year. [0003] Since the wireless remote meter is powe...

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Problems solved by technology

[0006] In the prior art, traditional wireless communication equipment wake-up methods mainly include signal strength wake-up method, preamble wake-up method, data packet wake-up method, autocorrelation wake-up method, etc., but each has its own shortcomings and is difficult to adapt to electricity, water, air, etc. Business scenarios for energy metering data collection such as energy, heat, etc.

For example, the signal strength wake-up method is susceptible to interference by similar strength signals, and the communication distance is short; the preamble wake-up method contains a small amount of information, and cannot support the point-to-point communication of the upper-level device to a certain meter located by the table address, and can only achieve a range The broadcast communication of the meter does not distinguish within; the data packet wake-up method requires the meter to receive a full-length data frame, which increases the listening cycle of the meter and makes it difficult to achieve the low-power operation goal of the meter; the auto-correlation wake-up method generates RS code, convolutional code, Turb o The decoding process of codes and other codes is complicated, which increases the response time and power consumption of the meter, and the demand for information storage is large, which puts forward higher requirements for the hardware configuration of the meter communication module.

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