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probabilistic forecasting method of UHF (ultra high frequency) RFID (radio frequency identification) gateway blind spot testing system

A radio frequency identification and testing system technology, applied in the direction of electromagnetic radiation induction, etc., can solve the problems of large workload, small calculation amount of statistical methods, difficult to achieve the ideal effect of estimation accuracy, etc., to achieve the effect of high measurement accuracy and high degree of automation

Active Publication Date: 2013-11-06
HUNAN UNIV
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Problems solved by technology

Although the previous two methods have high prediction accuracy, they need to establish a spatial three-dimensional model of the application scene, and the workload is heavy. Although the statistical method has a small amount of calculation, the estimation accuracy is difficult to achieve the desired effect
In short, these methods are deficient in some aspects

Method used

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  • probabilistic forecasting method of UHF (ultra high frequency) RFID (radio frequency identification) gateway blind spot testing system
  • probabilistic forecasting method of UHF (ultra high frequency) RFID (radio frequency identification) gateway blind spot testing system
  • probabilistic forecasting method of UHF (ultra high frequency) RFID (radio frequency identification) gateway blind spot testing system

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Embodiment Construction

[0045] The present invention will be further described below in conjunction with drawings and embodiments.

[0046] Referring to the accompanying drawings, the UHF radio frequency identification entrance blind spot test system includes a radio frequency transmission module, a radio frequency reception module and an entrance application simulation module. The radio frequency transmission module includes an up-conversion board 1, an intermediate frequency field programmable Gate array (FPGA RIO) board 3 and reader circularly polarized transmitting antenna 9, RF receiving module includes down-conversion board 2, FPGA RIO board 3 and dipole test antenna 8, entrance application simulation module includes programmable logic Controller (PLC) 4, motor 5, and transmission belt 7; the IF input interface of the up-conversion board 1 is connected to the IF output interface of the IF FPGA RIO board 3; the IF output interface of the down-conversion board 2 is connected to the IF of the IF FP...

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Abstract

The invention relates to a UHF (Ultra High Frequency) RFID (Radio Frequency Identification) gateway blind spot testing system and a probabilistic forecasting method. The UHF RFID gateway blind spot testing system comprises an up-conversion board card, a down-conversion board card, an intermediate frequency field programmable gate array (FPGARIO) board card capable of rearranging an input port and an output port, a PLC (Programmable Logic Controller), a motor, a microcomputer, a transmission band, a test antenna, a transmitting antenna and a radio-frequency cable. The invention also comprises the probabilistic forecasting method based on the UHF (Ultra High Frequency) RFID (Radio Frequency Identification) gateway blind spot testing system. The invention has high automation degree, low complexity and high accuracy, and is close to the application scenario of a real gateway, achieves better measurement accuracy during the slow change or fast change of field intensity distribution, and can estimate the probability and the rate of coverage of blind spots during actual gateway application according to lognormal model parameter tables obtained under various typical environments.

Description

technical field [0001] The invention relates to a probability prediction method for blind spot distribution of ultra-high frequency radio frequency identification portal (UHF) application. Background technique [0002] The entrance is an important part of the application of UHF RFID technology to the supply chain and warehousing of the Internet of Things. Such applications have high requirements on the reading rate and reliability of tags. Due to the influence of the multipath effect of radio wave propagation in the actual environment, blind spot areas for tag recognition often appear within the normal recognition range of the reader, which reduces the reliability of the application. Therefore, blind spot measurement and prediction of occurrence probability are the basis for deploying RFID entry applications. [0003] Existing channel test methods mainly include small-scale multipath measurement methods and large-scale measurement methods in the mobile radio field. Small-sc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06K7/10
Inventor 何怡刚佘开李兵侯周国佐磊尹柏强方葛丰阳辉
Owner HUNAN UNIV
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