# US 2026/0065005 A1 · Implantable radio frequency identification electronic tag system for temperature measurement and manufacturing method therefor

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 2026/0065005 A1
- Document ID: US20260065005A1
- Status: Published application
- Kind: A1
- Application number: 19/317,003
- Filed: 2025-09-02
- Published: 2026-03-05
- Earliest claimed: 2024-09-03
- Assignees: State Grid Jiangsu Electric Power Co., Ltd. Research Institute; Jiangsu Electric Power Test Research Institute Co. Ltd
- Applicants: State Grid Jiangsu Electric Power Co., Ltd. Research Institute; Jiangsu Electric Power Test Research Institute Co. Ltd
- Inventors: Zhaojie Chu; Jiagui Tao; Chenggang Li; Yunfeng Cai; Jianjun Liu; Jianguo Zhang; Danchen Mao; Yutong Chen; Siqi Song; Heng Zhao; Jianzhuo Dai; Jinwei Zhu
- Web page: https://patentgrep.com/patent/US20260065005A1

## CPC

- G06K 19/0717: {the sensor being capable of sensing environmental conditions such as temperature history or pressure}
- G01K 1/024: for remote indication
- G06K 1/12: otherwise than by punching
- G06K: GRAPHICAL DATA READING (image or video recognition or understanding G06V); PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G01K: MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR (radiation pyrometry G01J5/00)

## Abstract

An implantable radio frequency identification (RFID) electronic tag system for temperature measurement includes an electronic tag, which includes a radio frequency (RF) chip, an antenna, a tag substrate, and a reflector. The antenna and the reflector are located on upper and lower surfaces of the tag substrate, respectively. The tag substrate has a through hole, and the RF chip and the antenna are arranged inside the through hole. The RF chip is electrically connected to the antenna and is configured to detect temperature and incorporate a pre-programmed tag encoding. According to the present disclosure, by implanting the electronic tag into a cable, precise traceability and comprehensive management of the cable may be achieved, along with accurate in-cable temperature measurement.

## Claims

### Claim 1

An implantable radio frequency identification (RFID) electronic tag system for temperature measurement, comprising an electronic tag, the electronic tag comprising a radio frequency (RF) chip, an antenna, a tag substrate, and a reflector;
the antenna and the reflector being located on upper and lower surfaces of the tag substrate, respectively; the tag substrate having a through hole, and the RF chip and the antenna being arranged inside the through hole; the RF chip being electrically connected to the antenna, and configured to detect temperature and incorporate a pre-programmed tag encoding; the antenna being formed by folding a metal sheet into a hollow box-shaped structure; the box-shaped structure comprising an upper sheet and a lower sheet, and a mounting pad being arranged inside the box-shaped structure to secure the RF chip; and the RF chip being electrically connected to one side of the lower sheet through an impedance matching tuning loop, with the other side of the lower sheet being connected to the upper sheet;
the tag encoding containing implantation information of the electronic tag and production information of a cable; the implantation information comprising serial information, and the production information comprising manufacturer information, batch information, and cable serial number information; the tag encoding further comprising data fields for cable type information, cable model information, and cable voltage level information; the serial information being associated with an implantation interval of the electronic tags; and adjacent electronic tags being implanted into the cable at predetermined intervals, with serial information data of the adjacent electronic tags encoded as consecutive numerical values;
the system further comprising a manufacturing module electrically connected to the electronic tag, the manufacturing module being configured to program encoding information and issuance information into the RF chip; the encoding information comprising the tag encoding; and the issuance information comprising a unique identifier and a temperature sensing strategy for detecting an internal temperature of the cable; and
the manufacturing module being configured to program encoding information and issuance information into the RF chip comprises the steps of:
generating the tag encoding based on the implantation information of the electronic tag and the production information of the cable, and writing the tag encoding into the RF chip;
providing the temperature sensing strategy based on cable parameters at an implantation position of the electronic tag and detected temperature parameters, combined with ambient temperature parameters of the cable's position;
generating the unique identifier based on electronic tag parameters and parameters of a reader matching the electronic tag, validating the tag encoding of the electronic tag, and verifying the electronic tag parameters and reader parameters stored in the RF chip against the unique identifier; and
writing the unique identifier that has passed validation of the tag encoding, the electronic tag parameters, and the reader parameters into the RF chip and uploading the identifier for storage, wherein the reader parameters comprise reader power and frequency, and the electronic tag parameters comprise data length and key type of the electronic tag.

### Claim 2 (depends on 1)

The implantable RFID electronic tag system for temperature measurement according to claim 1, wherein the antenna comprises a rectangular metal patch, a ground plane, a shorting metal plate, a feed line, and a dielectric substrate; the ground plane is fixed to one side of the dielectric substrate, and the rectangular metal patch and the shorting metal plate are fixed to the other side; and the feed line is connected to the shorting metal plate, and two ends of the shorting metal plate are connected to the rectangular metal patch and the ground plane, respectively.

### Claim 3 (depends on 1)

The implantable RFID electronic tag system for temperature measurement according to claim 1, wherein the RF chip comprises a temperature sensor circuit for temperature detection; the temperature sensor circuit comprises an analog front-end (AFE) circuit and an analog-to-digital converter (ADC) circuit connected to the AFE circuit; and the AFE circuit is configured to output a voltage and a voltage difference to the ADC circuit using two transistors with different bias currents, and the ADC circuit is configured to determine the detected temperature result based on the voltage and the voltage difference.

### Claim 4 (depends on 1)

The implantable RFID electronic tag system for temperature measurement according to claim 1, wherein the tag encoding is specifically represented as:
TE
=
[
(
mi
,
to
,
mo
,
vl
,
bi
,
cr
,
si
,
cc
)
|
mi
∈
M
,
to
∈
T
,
mo
∈
O
,
vl
∈
V
,
bi
∈
B
,
cr
∈
CR
,
si
∈
S
]
mi
=
∑
j
=
1
k
⁢
D
j
(
d
)
*
10
j
-
1
where TE is a dataset of the tag encoding, T is a data encoding subset for cable type information, O is a data encoding subset for cable model information, V is a data encoding subset for cable voltage level information, M is a data encoding subset for manufacturer information, B is a data encoding subset for batch information, CR is a data encoding subset for cable serial number information, and S is a data encoding subset for serial information; cc is a check code, mi is a data field for manufacturer information, to is a data field for cable type information, mo is a data field for cable model information, vl is a data field for cable voltage level information, bi is a data field for batch information, cr is a data field for cable serial number information, and si is a data field for serial information; and d is the manufacturer information, Dj(d) is an American standard code for information interchange (ASCII) code corresponding to a jth symbol of the manufacturer information, and k is the number of symbols in the manufacturer information.

### Claim 5 (depends on 1)

The implantable RFID electronic tag system for temperature measurement according to claim 1, wherein the cable comprises, from interior to exterior, a plurality of cable conductors, an insulation layer, a metallic shield layer, a filling layer, an armor layer, and an outer sheath, and the electronic tag is implanted between the armor layer and the outer sheath; and
the temperature sensing strategy satisfies the following relationship:
θ
c
=
θ
0
-
2
⁢
θ
p
+
(
W
c
+
0
.
5
⁢
W
d
)
⁢
A
1
⁢
T
1
-
3
[
W
d
+
(
1
+
λ
1
)
⁢
W
c
]
⁢
A
2
⁢
T
2
+
3
[
W
d
+
(
1
+
λ
1
+
λ
2
)
⁢
W
c
]
⁢
(
A
3
⁢
T
3
+
A
4
⁢
T
4
)
where θc is a cable conductor temperature, θ0 is an ambient temperature at the cable's position, θp is a temperature detected by the electronic tag, Wc is a cable conductor loss, Wd is a dielectric loss of the insulation layer, T1 is a thermal resistance of the insulation layer, T2 is a thermal resistance of the filling layer, T3 is a thermal resistance of the outer sheath, T4 is a thermal resistance of a surrounding medium, λ1 is a resistive loss factor of the metallic shield layer, λ2 is a resistive loss factor of the armor layer, and A1, A2, A3, and A4 are all correction coefficients.

### Claim 6 (depends on 1)

A manufacturing method for an implantable RFID electronic tag for temperature measurement, adopting the implantable RFID electronic tag system for temperature measurement according to claim 1, comprising the steps of:
assembling an RF chip, an antenna, a tag substrate, and a reflector into an electronic tag; and
programming encoding information and issuance information into the RF chip.

### Claim 7 (depends on 2)

A manufacturing method for an implantable RFID electronic tag for temperature measurement, adopting the implantable RFID electronic tag system for temperature measurement according to claim 2, comprising the steps of:
assembling an RF chip, an antenna, a tag substrate, and a reflector into an electronic tag; and
programming encoding information and issuance information into the RF chip.

### Claim 8 (depends on 3)

A manufacturing method for an implantable RFID electronic tag for temperature measurement, adopting the implantable RFID electronic tag system for temperature measurement according to claim 3, comprising the steps of:
assembling an RF chip, an antenna, a tag substrate, and a reflector into an electronic tag; and
programming encoding information and issuance information into the RF chip.

### Claim 9 (depends on 4)

A manufacturing method for an implantable RFID electronic tag for temperature measurement, adopting the implantable RFID electronic tag system for temperature measurement according to claim 4, comprising the steps of:
assembling an RF chip, an antenna, a tag substrate, and a reflector into an electronic tag; and
programming encoding information and issuance information into the RF chip.

### Claim 10 (depends on 5)

A manufacturing method for an implantable RFID electronic tag for temperature measurement, adopting the implantable RFID electronic tag system for temperature measurement according to claim 5, comprising the steps of:
assembling an RF chip, an antenna, a tag substrate, and a reflector into an electronic tag; and
programming encoding information and issuance information into the RF chip.