An adaptive fuzzy data upload method based on nb-iot
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A self-adaptive fuzzy, data upload technology, applied in the direction of transmission of meter data, wireless architecture, electrical components, etc., can solve data delay and other problems
Inactive Publication Date: 2022-05-27
QIANWEI KROMSCHRODER METERS CHONGQING
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[0004] Aiming at the deficiencies in the prior art, the present invention provides an adaptive fuzzy data upload method based on NB-IoT, which solves the problem of data delay of wireless remote gas meters based on NB-IoT
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Embodiment 1
[0020] An adaptive fuzzy data upload method based on NB-IoT, comprising the following steps:
[0021] S1. The uploading terminal sends to the NB-iot base station or server to establish a communication connection, and calculates the connection request time and successful connection time when the pre-transmission data communication connection is made; establishes and stores the data to be transmitted, the connection request time, the successful connection time and the data to be transmitted. The correspondence between the corresponding connection points;
[0022] S2. Perform the difference operation between the connection time and the connection success time to obtain the connection time interval;
[0023] S3. Fuzzy the time interval corresponding to Mx1, Mx2, ....Mxn; specifically:
[0024] The set composed of time intervals is set as the universe of discourse U, and there are m fuzzy subsets on U (that is, m models), constitute a standard model, that is, the fuzzy language ...
Embodiment 2
[0031] The adaptive fuzzy data upload method based on NB-IoT provides an adaptive fuzzy data upload method. When a large number of smart gas meters have data to upload, the proposed adaptive fuzzy data upload method can calculate the data transmission in real time. The difference between the predicted connection time and the time of successful connection is the key point of data uploading. When batch data needs to be uploaded, the proposed algorithm can effectively realize the intelligent gas data uploading in batches and time. Correct remote transmission. figure 1 The different segment definition intervals are 0≤X<1 hour, 1≤X<2 hours, 2≤X<3 hours, 3≤X<4 hours, 4≤X<5 hours, 5≤X<6 hours, 6≤X<7 hours, 7≤X<8 hours; the corresponding constants are 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8.
[0032] The rectangular line is the step signal waveform, the result of the PID algorithm processing, and the fuzzy algorithm is the output result of the control algorithm proposed in this paper....
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Abstract
The present application discloses an adaptive fuzzy data uploading method based on NB-IoT, wherein the data uploading time point of the device is the optimization control object, the reference input is the data uploading time point of the current device, and the error comparison between the communication result and the original data is performed, When the error signal e occurs, the error signal e is selected as an input of the fuzzy controller, and the precise amount of the error signal is fuzzy quantized into a fuzzy amount. The fuzzy amount of the error e can be expressed by the corresponding fuzzy language, so as to obtain the error e A subset E of the fuzzy language set E (fuzzy vector) and fuzzy control rules R (fuzzy relationship) are used to make fuzzy decisions according to the synthetic rules of inference, and the fuzzy control quantity U is obtained, in order to exert precise control over the controlled object , it is also necessary to convert the fuzzy quantity U into an accurate quantity through de-fuzzification processing, and after obtaining an accurate digital quantity, the data upload point of the device is modified, and the optimal upload time point is finally found after cyclic optimization.
Description
technical field [0001] The invention relates to the technical field of data collection, in particular to an adaptive fuzzy data uploading method based on NB-IoT. Background technique [0002] At present, IC card gas meters occupy the main position in smart gas meters. According to incomplete statistics, the national IC card gas meter market has more than 5,000 × 104 units. The IC card gas meter can realize the prepaid function, but the IC card gas meter has its own shortcomings: the user needs to go to the gas business hall to purchase gas, and during the peak gas purchase period, the user needs to queue for a long time to complete the gas purchase. For gas companies, there are also problems such as information lag and difficulty in controlling the supply and marketing gap. In response to such problems, this paper proposes the design of a wireless remote gas meter based on NB-IoT to solve the problems of information lag and poor control of supply and sales. [0003] Narrow...
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