3.2 Electromagnetism Analysis of Physical Anti-Collision …
73
3.2 Electromagnetism Analysis of Physical
Anti-Collision—Research on the Effect of Humidity
and Salt Fog on Tag Performance
3.2.1 Effect of Humidity on the Moving Identifying
Performance of UHF RFID System
Passive UHF RFID systems have a longer read range than other RFID systems.
Therefore, They are widely used in transportation fields including road transportation
and ship transportation. Danaela [17] used RFID loop tags on an onboard ship. For
cost reasons, Danaela thought that product identification should use active readers
and passive tags. Considering ship locks for ships transporting in rivers, Hu et al.
[18] proposed a ship access lock management system by using an RFID system,
which was used to complete the tracking work during the operation of the ship. This
method completed the ship non-stop by the lock-in procedure in the river, which
made service more convenient and had broad prospects. Through the RFID upgrade
and modification of existing containers, in and out efficiency of the port can be
greatly improved [19]. The proportion of today’s social transportation industry is
constantly increasing. Through the RFID upgrade of traditional storage systems and
container yards, transportation efficiency can be greatly improved. With the help of
internet of things technology, the seaport will be greatly promoted as a benchmark
for high-volume transportation. Meanwhile, the problems of the effect of humidity
on the UHF RFID system’s performance keep springing up.
The RFID system can be applied in extremely harsh environments such as liquid
and metal environments. Through a lot of experiments, Wu [20] found that higher
conductivity liquid may have a greater impact on RFID tag’s reading performance, but
he did not theoretically analyze the reasons. How to ensure the integrity of equipment
is an important issue in modern industry. Liquid leak detection can effectively ensure
the safety of instruments and equipment. Guo et al. [21] detected liquid leakage by
using COTS RFID devices. Periyasamy et al. [22] analyzed the 13.56 MHz passive
RFID tag’s performance in liquid and metal environments. The purpose of the study
was to investigate whether particularly close access to different types of metals and
liquids would have an effect on the RFID system’s reading performance. The reading
rate and the reading distance between tag and reader were used as performance criteria
to test the changes of the system under different influencing factors.
The RFID system will have great development potential in the medical field in
the future. RFID tags in medicine are often used in a liquid-related environment or
harsh environment. Ergin et al. [23] used RFID tags for pharmaceutical products.
Distance between RFID tag and interrogator, dosage form, rotation angle, and ion
concentration in solution were used as influencing factors in the study. The results
showed that any dosage form could affect the tag compared to an empty container.
The specific impact was the decrease in read performance. Alfonso et al. [24] attached
RFID tags to the blood bag. RFID tag’s viability was tested in harsh environments
73
3.2 Electromagnetism Analysis of Physical
Anti-Collision—Research on the Effect of Humidity
and Salt Fog on Tag Performance
3.2.1 Effect of Humidity on the Moving Identifying
Performance of UHF RFID System
Passive UHF RFID systems have a longer read range than other RFID systems.
Therefore, They are widely used in transportation fields including road transportation
and ship transportation. Danaela [17] used RFID loop tags on an onboard ship. For
cost reasons, Danaela thought that product identification should use active readers
and passive tags. Considering ship locks for ships transporting in rivers, Hu et al.
[18] proposed a ship access lock management system by using an RFID system,
which was used to complete the tracking work during the operation of the ship. This
method completed the ship non-stop by the lock-in procedure in the river, which
made service more convenient and had broad prospects. Through the RFID upgrade
and modification of existing containers, in and out efficiency of the port can be
greatly improved [19]. The proportion of today’s social transportation industry is
constantly increasing. Through the RFID upgrade of traditional storage systems and
container yards, transportation efficiency can be greatly improved. With the help of
internet of things technology, the seaport will be greatly promoted as a benchmark
for high-volume transportation. Meanwhile, the problems of the effect of humidity
on the UHF RFID system’s performance keep springing up.
The RFID system can be applied in extremely harsh environments such as liquid
and metal environments. Through a lot of experiments, Wu [20] found that higher
conductivity liquid may have a greater impact on RFID tag’s reading performance, but
he did not theoretically analyze the reasons. How to ensure the integrity of equipment
is an important issue in modern industry. Liquid leak detection can effectively ensure
the safety of instruments and equipment. Guo et al. [21] detected liquid leakage by
using COTS RFID devices. Periyasamy et al. [22] analyzed the 13.56 MHz passive
RFID tag’s performance in liquid and metal environments. The purpose of the study
was to investigate whether particularly close access to different types of metals and
liquids would have an effect on the RFID system’s reading performance. The reading
rate and the reading distance between tag and reader were used as performance criteria
to test the changes of the system under different influencing factors.
The RFID system will have great development potential in the medical field in
the future. RFID tags in medicine are often used in a liquid-related environment or
harsh environment. Ergin et al. [23] used RFID tags for pharmaceutical products.
Distance between RFID tag and interrogator, dosage form, rotation angle, and ion
concentration in solution were used as influencing factors in the study. The results
showed that any dosage form could affect the tag compared to an empty container.
The specific impact was the decrease in read performance. Alfonso et al. [24] attached
RFID tags to the blood bag. RFID tag’s viability was tested in harsh environments