UHF 4 Port Reader

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UHF 4 Port Reader

The RF channel is based on Impinj's dedicated UHF RFID chip with excellent performance; the unique I-Search multi-tag identification algorithm provides the highest identification efficiency in the industry. Algorithms specially designed for applications

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Description
The RF channel is based on Impinj's dedicated UHF RFID chip with excellent performance;the unique I-Search multi-tag identification algorithm provides the highest identification efficiency in the industry. Algorithms specially designed for applications that read a small number of tags. Ultra-high tag response speed.

Specification

Characteristic	Description
RFID Chip: Impinj R2000	The RF channel is based on a dedicated Impinj UHF RFID chip with excellent performance.
High performance multi-tag recognition algorithm	The unique I-Search multi-tag recognition algorithm provides the highest recognition efficiency in the industry.
Algorithm optimized for reading a small number of tags	An algorithm designed for the applications that read a small number of tags. Ultra-high response speed of reading tag.
Dual CPU architecture design	The main CPU is responsible for polling the tags and the sub CPU is responsible for data management. To poll tag and send data are in parallel, and do not occupy each other's time. Greatly improved overall performance. The secondary CPU is responsible for generating real random numbers and monitoring the operating status of the system.。
Fast 4-antenna polling function	High-speed polling of 4 antennas. The shortest polling time per antenna is approximately 25ms. The polling time of each antenna can be configured separately.
Two tag inventory modes	Cache mode and real-time mode. After the cache mode reads the tag, it is placed in the cache and filtered for duplicate data. The data is not redundant. * Real-time mode uploads immediately after reading the tag, and the user can get the tag data in the first time.
Hardware crash monitoring	The hardware monitors the CPU operating status. 24 hours × 365 days of normal operation does not crash.
RF amplifier status monitoring	Monitor the operating status of the RF power amplifier. Make sure the amplifier is not saturated. Ensure that the amplifier will work stably for a long time.
Realize 18000-6B/C full protocol function	It can quickly switch between 18000-6B/C dual protocols to realize simultaneous reading of dual protocol labels.
18000-6B big data one-time read and write	time for reading 216 bytes<500ms。 time for writeing 216 bytes < 3.5s。 *Read and write any data length at one time
Antenna connection status monitoring	Determine the antenna connection status. The receiver can be protected. *Can be closed by command.
Multi-point onboard temperature sensor	Multi-point monitoring to accurately monitor the operating temperature of the system.
Dual backup output power correction	Ensure that the RF output power is accurately and controllable. Two power verification modules that are backed up from each other. The system will operate normally unless it is damaged at the same time.
Outstanding heat dissipation design	Large area of heat sink contact surface. The thermally coupled interface uses a solid material with high thermal conductivity and does not volatilize at high temperatures.

Electrical Parameters

Size	230mm(L) x 160mm(W) x 28mm(H)
Weight	1.8 Kg
Body material	Die-cast aluminum alloy
Input voltage	DC 12V ~ 18V
Standby current	<70mA
Sleep state current	<100uA
Maximum operating current	600mA +/-5% @ DC 12V Input
Operating temperature	- 20 °C ~ + 55 °C
Storage temperature	- 20 °C ~ + 85 °C
Operating humidity	< 95% ( + 25 °C)
Interface protocol	EPC global UHF Class 1 Gen 2 / ISO 18000-6C / ISO 18000-6B
Working frequency range	860MHz – 960MHz
Support area	US, Canada and other regions following U.S. FCC Europe and other regions following ETSI EN 302 208 Mainland China, Taiwan, Japan, Korea, Malaysia
Output Power	0 – 33dBm
Output RF connector	TNC/RP-TNC
Output power accuracy	+/- 1dB
Output power flatness	+/- 0.2dB
Receiving sensitivity	< -85 dBm
Inventory tag peak speed	>700 pcs/second
Tag buffer	1000pcs tag @ 96 bit EPC
Tag RSSI	support
Antenna connection protection	support
Ambient temperature monitoring	support
Operating mode	Stand-alone / intensive
Communication Interface	RS-232 or TCP/IP
GPIO	2 input optical coupling 2 output optical coupling
Highest communication baud rate	115200 bps
Heat dissipation method	Air cooling

The effect of different algorithms on multi-tag recognition performance

Description:
1.) The above picture is the measured performance comparison chart (with the English frequency dynamic Q anti-collision algorithm as the comparison standard)。
2.) The above picture shows the performance comparison of the first round of inventory.。
3.）Testing with different algorithms on the same hardware platform。

	Algorithm name	Algorithm description
	Standard fixed Q anti-collision algorithm	The standard algorithm of the 18000-6C protocol. Performance is significantly reduced when the number of tags is large. *When the number of labels is small, it is not efficient.
	Impinj Dynamic Q anti-collision algorithm	American IMPINJ company's algorithm Good efficiency when the number of labels is large or small. *A portion of the performance was sacrificed for compatibility.
	I – Search Dynamic Q Anti-Collision Algorithm V1.0	Based on the dynamic Q algorithm of the American IMPINJ company. After optimization, the performance is slightly improved. *This algorithm is used in firmware versions 6.6 and below.
	I – Search Dynamic Q Anti-Collision Algorithm V2.0	Based on the dynamic Q algorithm of the American IMPINJ company. The new data model has greatly improved performance; this algorithm is used in firmware versions 6.7 and above. *The difference from the traditional algorithm can be clearly felt; the performance difference is more obvious when the number of tags is large.

Interface definition

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