A kind of RFID signal detection device and detection method thereof
A signal detection and signal technology, which is applied in the direction of instruments, inductive recording carriers, computer components, etc., can solve the problems of restricting the application field, the inability to use active RFID tags, and weak signals of passive RFID tags, so as to improve the detection ability Effect
Active Publication Date: 2016-05-11
宁波华测电子科技有限公司
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Problems solved by technology
However, because the signal of passive RFID tags is relatively weak, its detection distance is much smaller than that of active RFID tags, which greatly restricts its application field
[0003] However, in many occasions, due to safety, environmental protection and other considerations, active RFID tags cannot be used, such as in oil and gas pipelines
Method used
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[0029] Embodiments of the present invention will be further described below in conjunction with the accompanying drawings.
[0030] Such as figure 1 Shown, a kind of RFID signal detection device comprises:
[0031] The current-voltage conversion unit is used to convert the current signal on the antenna into a corresponding voltage signal;
[0032] a filter unit, configured to filter the voltage signal output by the current-voltage conversion unit, and extract the flyback signal of the radio frequency tag;
[0033] A phase-locked detection unit, configured to convert the signal output by the filter unit into a corresponding periodic function signal whose amplitude is related to the radio frequency tag according to the reference signal; and,
[0034] The processing unit is configured to process the signal output by the phase lock detection unit, and obtain information related to the radio frequency tag.
[0035] to combine Figure 4 As shown, in the above embodiment, on the ...
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The invention relates to an RFID (radio frequency identification device) signal detection device and a detection method thereof. The RFID signal detection device comprises a current voltage converting unit, a filtering unit, a lock phase wave detection unit and a processing unit, wherein the current voltage converting unit is used for converting current signals on an antenna into corresponding voltage signals; the filtering unit is used for filtering voltage signals output by the current voltage converting unit, and extracting radio frequency tag flyback signals; the lock phase wave detection unit is used for converting signals output by the filtering unit into corresponding periodic function signals of which amplitude values are related to the radio frequency tag according to reference signals; and the processing unit is used for processing signals output by the lock phase wave detection unit, so as to obtain information related to the radio frequency tag.
Description
technical field [0001] The invention relates to an RFID signal detection device and a detection method thereof. Background technique [0002] Now, passive RFID (Radio Frequency Identification) is widely used in various industries. However, since the signal of passive RFID tags is relatively weak, its detection distance is much smaller than that of active RFID tags, which greatly restricts its application field. [0003] However, in many occasions, due to various considerations such as safety and environmental protection, active RFID tags cannot be used, such as in oil and gas pipelines. Contents of the invention [0004] The technical problem to be solved by the present invention is to provide an RFID signal detection device and its detection method, which can greatly improve the detection capability of passive RFID tags. Of course, the technical solution of the present invention can also be applied to the field of active RFID. [0005] The present invention at first pro...
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Inventor 肖蕾
Owner 宁波华测电子科技有限公司