Self-adaptive fuzzy data uploading method based on NB-IoT
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A technology of self-adaptive fuzzy and data uploading, which is applied in the direction of transmitting meter data, electrical components, telemetry/remote control selection devices, etc., and can solve problems such as data delay
Active Publication Date: 2020-07-31
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
[0021] A method for uploading adaptive fuzzy data based on NB-IoT, comprising the following steps:
[0022] S1. Upload the terminal and send to the NB-iot base station or server to establish a communication connection, calculate the request connection time and connection success time of the pre-transmission data communication connection; establish and store the waiting data, request connection time, connection success time and pending transmission The corresponding relationship between the connection points corresponding to the data;
[0023] S2. Perform a difference operation between the connection time and the successful connection time to obtain the connection time interval;
[0024] S3. Perform fuzzy processing on time intervals corresponding to Mx1, Mx2, ... Mxn; specifically:
[0025] The set composed of time intervals is set as domain U, and there are m fuzzy subsets on U (i.e. m models), constitute a standard module that is the fuzzy language set E; U={x 1 , x 2 ,...
Embodiment 2
[0032] The adaptive fuzzy data upload method based on NB-IoT provides an adaptive fuzzy data upload method. When there are a large number of smart gas meters that need to upload data, the proposed adaptive fuzzy data upload method can be used to calculate and send data in real time. The difference between the request connection time and the connection success time is the key point of data upload. When batch data needs to be uploaded, the proposed algorithm can effectively realize the smart gas data in batches and in time. Remote transmission correctly. figure 1 The different segments define intervals as 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.
[0033] 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. It is e...
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Abstract
The application discloses a self-adaptive fuzzy data uploading method based on NB-IoT. A data uploading time point of equipment is an optimization control object and a reference input is a data uploading time point of the current equipment; error comparison is carried out on a communication result and original data; when an error signal e occurs, an error signal e is selected as an input quantityof a fuzzy controller; fuzzy quantization is carried out on an accurate quantity of an error signal to form a fuzzy quantity; the fuzzy quantity of the error e can be expressed by a corresponding fuzzy language and thus a subset E of the fuzzy language set of the error e is obtained; fuzzy decision making is performed on the E (fuzzy vector) and a fuzzy control rule R (fuzzy relationship) according to a reasoning synthesis rule to obtain a fuzzy control quantity U. In order to apply accurate control to a controlled object, the fuzzy quantity U needs to be subjected to non-fuzzy processing to be converted into an accurate quantity, and after an accurate digital quantity is obtained, a data uploading point of the equipment is modified, so that an optimal uploading time point is finally foundthrough loop optimization.
Description
technical field [0001] The invention relates to the technical field of data collection, in particular to an NB-IoT-based adaptive fuzzy data upload method. 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 5000×104 units. The IC card gas meter can realize the prepayment function, but the IC card gas meter has its own disadvantages: users need to go to the gas business hall to purchase gas, and users need to queue for a long time to complete the gas purchase during the peak period of gas purchase. For gas companies, there are also problems such as information lag and supply and marketing gaps that are difficult to control. 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 difficult control of supply and marketing gaps. [0003] Na...
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