About RFID
Automatic identification technology that uses radio frequency signals to achieve
non-contact information transmission through space coupling (alternating magnetic
field or electromagnetic field), and achieves the identification purpose through the
information. Conventional use in regional personnel positioning has great advantages.
Product summary
HC-PA23 baby protective tag is an RFID electronic product used in hospital baby anti-theft system. This product is worn on the baby's feet with an environmentally-friendly soft wristband, which will not cause discomfort to the baby. Infant protection tags are responsible for collecting baby position coordinates in the anti-theft system, and cooperate with the reader to transmit data to the system.
Product Feature
1. Reading: Compared with bar code, there is no need to scan in a straight line, the reading speed is faster, and multi-tag recognition and motion recognition can be performed;
2. Security: Anti-tampering, encryption algorithm and authentication to ensure data security and durability;
3. Dedicated chip, unique serial number, difficult to copy. Durability without mechanical failure, fully sealed structure resistant to harsh environments.
4. Reading Type: Read-only;
5. Anti-suddenness: Advanced anti-collision technology can identify more than 2000 tags at the same time;
6. High anti-interference: no special requirements for various interference sources on the site;
7. Double anti-disassembly: wristband shear alarm and human skin sensor function.
8. Low battery alarm: When the battery power is low, a code will be sent to the system to remind the staff to charge in time.
Datasheet
| Physical Parameter |
| Size |
Head is 38mm×34mm×13mm, wrist is 9.5mm*150mm |
| Material |
ABS+PC |
| Color |
White, red |
| Weight |
250g |
| Physical tamper |
Wristband stop back pull design |
| Environmental Parameters |
| Working Humidity |
5%-95% |
| Working Temperature |
-20 ~ 65ºC |
| Storage Temperature |
-40 ~ 80ºC |
| Protection Level |
IP65 (Dust-proof and waterproof, do not soak for long time) |
| Performance parameter |
| Operating Voltage |
3V |
| Frequency |
2.4GHz &125K |
| Receiving sensitivity |
-90dBm |
| Collision Ability |
>2000PCS |
| Battery |
2032 rechargeable battery |
| Electronic tamper |
1.Wristband disconnect alarm
2.Off skin alarm |
| Other Function |
Low power alarm |
Definition of data format sent back by the reader
1. Data packet format (40 characters in total)
| Item |
Mark |
Device
Number |
Device
Datetime |
Tag
Number |
Flag |
Flag
Data |
Checksum |
| Description |
# |
Hexadecimal |
Decimal |
Decimal |
Any |
Hexadecimal |
* |
Number of
characters |
1 |
8 |
12 |
10 |
1 |
6 |
2 |
2. Details of the data packet
| No |
Definition |
Description |
| 1 |
Head sign |
'#' |
| 2 |
Device ID7(H) |
Content format: hex character format
Equipment type, equipment number or site number can be modified by yourself (you can modify it after entering equipment management page)
(This data refers to the device number of the reader, not the number of the wristband) |
| 3 |
Device ID6(H) |
| 4 |
Device ID5(H) |
| 5 |
Device ID4(H) |
| 6 |
Device ID3(H) |
| 7 |
Device ID2(H) |
| 8 |
Device ID1(H) |
| 9 |
Device ID0(H) |
| 10 |
Year High(D) |
Content format: decimal character format
time
Year, month, day, hour, minute, second |
| 11 |
Rear Low(D) |
| 12 |
Month High(D) |
| 13 |
Month Low(D) |
| 14 |
Day High(D) |
| 15 |
Day Low(D) |
| 16 |
Hour High(D) |
| 17 |
Hour Low(D) |
| 18 |
Minute High(D) |
| 19 |
Minute Low(D) |
| 20 |
Second High(D) |
| 21 |
Second Low(D) |
| 22 |
Card number 10th(D) |
Card number
Content format: decimal character format
2.4G card number for wristband |
| 23 |
Card number 9th (D) |
| 24 |
Card number 8th (D) |
| 25 |
Card number 7th (D) |
| 26 |
Card number 6th (D) |
| 27 |
Card number 5th (D) |
| 28 |
Card number 4th (D) |
| 29 |
Card number 3th (D) |
| 30 |
Card number 2th (D) |
| 31 |
Card number 1th (D) |
| 32 |
Function flag (C) |
Content format: Any character, the uppercase character of the flag is normal, and the lowercase letter of the flag is low
A / a: positioning function, the tag data 1 indicates the low-frequency positioning address code collected by the tag,
B / b: Remove alarm function
S / s: alarm function, the value of label data is 01 for help alarm and 02 for acceleration alarm
H / s: Heart rate function. Labeled data 1 indicates the heart rate collected by the label, and data 2 indicates the blood oxygen value.
(The parts marked in red are not applicable to this product) |
| 33 |
Tag Data 1 |
| 34 |
| 35 |
Tag Data 2 |
| 36 |
| 37 |
Tag Data 3 |
RSSI signal strength value, high nibble 0 ~ F indicates signal strength, ultra-small value signal is super strong, low nibble 1 ~ 4 indicates corresponding channel number |
| 38 |
| 39 |
High 4 bits (H) of the
checksum |
Content format: hex character format
Checksum byte, add the hexadecimal value of the first 38 characters, plus the check code value here, the combined and trailing byte values are zero |
| 40 |
Low 4 bits (H) of the
checksum |
3. Checksum example
For example:#000000011504180808090022046518E990000C2
According to the above example, the verification method of the check code is as follows:
| No |
01 |
02 |
03 |
04 |
05 |
06 |
07 |
08 |
09 |
10 |
11 |
12 |
13 |
14 |
15 |
16 |
17 |
18 |
19 |
20 |
21 |
22 |
23 |
24 |
25 |
26 |
27 |
28 |
29 |
30 |
32 |
32 |
33 |
34 |
35 |
36 |
37 |
38 |
39 |
40 |
Character |
# |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
1 |
1 |
5 |
0 |
4 |
1 |
8 |
0 |
8 |
0 |
8 |
0 |
9 |
0 |
0 |
2 |
2 |
0 |
4 |
6 |
5 |
1 |
8 |
E |
9 |
9 |
0 |
0 |
0 |
0 |
7 |
D |
Hexadecimal |
23 |
30 |
30 |
30 |
30 |
30 |
30 |
30 |
31 |
31 |
35 |
30 |
34 |
31 |
38 |
30 |
38 |
30 |
38 |
30 |
39 |
30 |
30 |
32 |
32 |
30 |
34 |
36 |
35 |
31 |
38 |
45 |
39 |
39 |
30 |
30 |
30 |
30 |
7D |
Calculation
Method |
Checksum calculation: In sum of all hexadecimal values, the end byte is 0
23 + 30 + 30 + 30 + 30 + 30 + 30 + 30 + 31 + 31 + 35 + 30 + 34 + 31 + 38 + 30 + 38 + 30 + 38 + 30 + 39 + 30 + 30 + 32 + 32 + 30 + 34 + 36 + 35 + 31 + 38 + 45 + 39 + 39 + 39 + 30 + 30 + 30 + 30 + 7D = 800 (combined value end byte is 0) |
Note: In the data uploaded by the wristband, bits 32, 33, and 34 are more important because it indicates the current status of the wristband, such as whether it is woken up by the 125k low frequency, and what the heart rate of the current wearer, and check whether the battery voltage is normal.
Optional function
1.Tamper proof
The wristband can be customized with tamper proof function. When the watchband is disassembled illegally, the wristband will upload the disassembled information. After the reader receives the disassembled information uploaded by the wristband, it will return it to the server. The 32-bit flag position in the data packet is B, and the last two digits of the flag bit are generally 01. Therefore, when doing software processing, if it is found that the flag bit in the data returned by a certain data becomes B, it means that the wristband sending this data has been dismantled illegally, and the software should do further processing.
2.125Khz low frequency positioning function
The wristband can be customized with a 125k low-frequency positioning function. When arrive at 125k sensor such as a ground-sensing activator, the 32nd bit position in the data packet returned to the server is A. And after the reader receive the signal of 125Khz from the activation device, the values of bits 33 and 34 in the data packet returned to the server shows the activation device address. By checking the placement of the activation device that transmitting the low-frequency address on the software platform, it can be known that the wristband is near the activation device. This function can be used to derive functions such as real-time positioning, cross-boundary alarms, and excessive personnel gathering alarms.
3.Battery rechargeable & Low power alarm
The wristband can be customized to be rechargeable. Rechargeable wristband adopts 230mAh button battery, light weight, high safety, large capacity, and more than 500 cycles. When the battery voltage is lower than the warning value, the wristband returns the 32nd bit flags in the server data through the reader to lowercase letters, such as changed from A, B, C, D, E, F (Means normal battery power) to a, b, c, d, e, f (Means low battery power).
4.13.56Mhz RFID&NFC
Wristband can be inbuilt 13.56Mhz RFID or NFC function, used for access control, payment, identification verification and so on.
Precautions
1.Do not put it into the fire or store it in a high temperature environment over 85 ºC;
2.Do not use sharp tools to damage;
3.Do not place it near corrosive articles;
4.Do not change the parameters, specifications and models of components during maintenance;
5.Do not put the tag in a closed space;
6.Do not collide with the tag violently;
7.Do not use heavy objects to squeeze the tag.
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