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CN-224232182-U - High-performance four-channel ultrahigh frequency reader-writer

CN224232182UCN 224232182 UCN224232182 UCN 224232182UCN-224232182-U

Abstract

The utility model discloses a high-performance four-channel ultrahigh frequency reader-writer, which belongs to the technical field of wireless radio frequency identification equipment, and comprises a microcontroller, a radio frequency processing module, an antenna, an RS485 communication module, an Ethernet/RS 485 communication module, a power management control module, an input/output module, a data storage module and an LED lamp indication module, wherein the microcontroller is respectively connected with the input/output module, the data storage module and the LED lamp indication module, the Ethernet/RS 485 communication module comprises the RS485 communication module and the Ethernet port communication module, the microcontroller is connected with an upper computer through the RS485 communication module or the Ethernet port communication module, the antenna is connected with the microcontroller through the radio frequency processing module, and the data of an ultrahigh frequency tag can be read through the antenna and the radio frequency processing module.

Inventors

  • XU ZHONGSHENG
  • WANG SHIBAO
  • ZENG PENG

Assignees

  • 杭州友上智能技术有限公司
  • 杭州马上创新科技有限公司

Dates

Publication Date
20260512
Application Date
20250327

Claims (7)

  1. 1. The high-performance four-channel ultrahigh frequency reader-writer is characterized by comprising a microcontroller, a radio frequency processing module, an antenna, an RS485 communication module, an Ethernet/RS 485 communication module, a power management control module, an input/output module, a data storage module and an LED lamp indication module; The microcontroller is respectively connected with the input and output module, the data storage module and the LED lamp indication module; The Ethernet/RS 485 communication module comprises an RS485 communication module and an Ethernet port communication module; the microcontroller is connected with the upper computer through an RS485 communication module or an Ethernet port communication module; the antenna is connected with the microcontroller through the radio frequency processing module; the power management control module is used for supplying power to the microcontroller, the radio frequency processing module, the antenna, the RS485 communication module, the Ethernet port communication module, the input/output module, the data storage module and the LED lamp indication module; the power management control module comprises a first power circuit and a second power circuit which are connected; The first power supply circuit comprises a first power supply chip U1; The +24V voltage output end is connected with the VIN end of the first power supply chip U1 through a voltage stabilizing diode U12 and a VDD12V voltage output end after being combined into a path through a fuse BT1 and an inductor L6; The VIN end of the first power chip U1 is grounded through a capacitor C27 and a capacitor C28 which are arranged in parallel; The EN end of the first power chip U1 is grounded through a resistor R2; the RT/CLK end of the first power chip U1 is grounded through a resistor R3; after the EN end and the RT/CLK end of the first power chip U1 are connected in parallel, the EN end and the RT/CLK end of the first power chip U1 are connected with each other through a capacitor C1, a capacitor C2 and a capacitor C3 which are arranged in parallel; The VIN end and the EN end of the first power chip U1 are connected through a resistor R1; The BOOT end and the SW end of the first power chip U1 are connected through a capacitor C4; the SW end of the first power chip U1 is connected with the 5V voltage output end of the inductor L1, and the 5V voltage output end is connected with the radio frequency processing module; the SW end and the GND end of the first power chip U1 are connected through a capacitor C7, a capacitor C8, a capacitor C21 and a diode D13 which are arranged in parallel; The GND ground of the first power supply chip U1 is grounded; The FB end and the SW end of the first power chip U1 are connected through a resistor R5 and a capacitor C11 which are arranged in parallel; The FB end of the first power supply chip U1 is grounded through a resistor R6; The COMP end of the first power chip U1 is grounded after passing through a resistor R4 and a capacitor C6 and a capacitor C5 which are arranged in parallel.
  2. 2. The high-performance four-channel ultra-high frequency reader-writer according to claim 1, wherein: The second power supply circuit comprises a second power supply chip U14; The 5V voltage output end is connected with the VIN end of the second power supply chip U14; The SW end of the second power chip U14 is connected with the 3.3V voltage output end through an inductor L4; The SW end of the second power chip U14 is connected with the ST end of the second power chip U14 through a capacitor C59; The EN end of the second power chip U14 is connected with the VIN end of the second power chip U14 through a resistor R78; The FB terminal of the second power chip U14 is connected to the SW terminal of the second power chip U14 through a resistor R79 and a resistor R80 that are serially connected.
  3. 3. The high-performance four-channel ultra-high frequency reader-writer according to claim 2, wherein: The input/output module is a four-way input/output circuit; the input/output circuit comprises an optical coupler U23 and an optical coupler U21; The 1 end of the optical coupler U23 is connected with the 3.3V digital signal output end through a resistor R38; the 2 end of the optical coupler U23 is connected with the output end GPO4 of the microcontroller; The 3 end of the optical coupler U23 is grounded; the 4 end of the optocoupler U23 is connected with the grid electrode of the PMOS tube U22 through a resistor R58; the source electrode of the PMOS tube U22 is connected with the IO pin through an inductor L8; the source electrode and the grid electrode of the PMOS tube U22 are connected through a resistor R57 and a capacitor C45 which are arranged in parallel; the drain electrode of the PMOS tube U22 is divided into two paths, one path is grounded through a transient voltage suppression diode D1, and the other path is connected with the 1 end of the optocoupler U21 through a resistor R39; the 2-terminal end of the optical coupler U21 is grounded; The end 1 and the end 2 of the optical coupler U21 are connected through a capacitor C44; the 3 end of the optical coupler U21 is grounded; The 4 sections of the optocoupler U21 are divided into two paths, one path is connected with the input end GPI4 of the microcontroller, and the other path is connected with the 3.3V voltage output end through a resistor R63; The 3 end and the 4 end of the optocoupler U21 are connected through a capacitor C46.
  4. 4. A high-performance four-channel ultra-high frequency reader-writer according to claim 3, wherein: the data storage module comprises a storage chip U8; The CS end, the SO end and the SCK end of the data storage module are connected with the microcontroller; The 3.3V voltage output end is connected with the VDD end of the data storage module; The VDD end and the HOLD end of the data storage module are connected through a resistor R64; the VDD terminal of the data storage module is grounded after passing through the capacitor C63.
  5. 5. The high-performance four-channel ultra-high frequency reader-writer according to claim 4, wherein: the RS485 communication module comprises a communication chip U9; The 3.3V voltage output end is connected with the VCC end of the RS485 communication module; RO and DI ends of the communication chip U9 are connected with the microcontroller; The A end of the RS485 communication module is connected with the 485_A end through a fuse F2; the end B of the RS485 communication module is connected with the end 485_B through a fuse F1; the end A and the end B of the RS485 communication module are connected with a transient suppression diode D5 through a resistor R42 which is arranged in parallel; And the end A and the end B of the RS485 communication module are connected through a transient suppression diode D7 and a transient suppression diode D7 which are arranged in series, and the transient suppression diode D7 are grounded indirectly.
  6. 6. The high-performance four-channel ultra-high frequency reader-writer according to claim 5, wherein: The Ethernet port communication module comprises a network chip U2; The 3.3V voltage output end is connected with the VDD end of the network chip U2; The RXN end and the RXP end of the network chip U2 are connected with the network data input end; And the TXN end and the TXP end of the network chip U2 are connected with the microcontroller.
  7. 7. The high-performance four-channel ultra-high frequency reader/writer according to claim 6, wherein: the LED lamp indication module comprises an FPC connector and six Light Emitting Diodes (LEDs); the 3.3V voltage output end is connected with the FPC connector; And two ends of the six Light Emitting Diodes (LEDs) are respectively connected with the FPC connector and the microcontroller.

Description

High-performance four-channel ultrahigh frequency reader-writer Technical Field The utility model relates to the technical field of wireless radio frequency identification equipment, in particular to a high-performance four-channel ultrahigh frequency reader-writer. Background The RFID reader is also called as an RFID reader, namely radio frequency identification, automatically identifies a target object through radio frequency identification signals and acquires related data, does not need manual intervention, can identify a high-speed moving object and simultaneously identify a plurality of RFID tags, and is rapid and convenient to operate. The reader-writer in the prior art has complex structure and higher cost. Disclosure of utility model The utility model aims to provide an efficient high-performance four-channel ultrahigh frequency reader-writer. In order to solve the technical problems, the high-performance four-channel ultrahigh frequency reader comprises a microcontroller, a radio frequency processing module, an antenna, an RS485 communication module, an Ethernet port communication module, a power management control module, an input/output module, a data storage module and an LED lamp indication module; The microcontroller is respectively connected with the input and output module, the data storage module and the LED lamp indication module; the microcontroller is connected with the upper computer through an RS485 communication module or an Ethernet port communication module; the antenna is connected with the microcontroller through the radio frequency processing module; The power management control module is used for supplying power to the microcontroller, the radio frequency processing module, the antenna, the RS485 communication module, the Ethernet port communication module, the input/output module, the data storage module and the LED lamp indication module. Preferably, the power management control module comprises a first power circuit and a second power circuit which are connected. Preferably, the first power supply circuit comprises a first power supply chip U1; The +24V voltage output end is connected with the VIN end of the first power supply chip U1 through a voltage stabilizing diode U12 and a VDD12V voltage output end after being combined into a path through a fuse BT1 and an inductor L6; The VIN end of the first power chip U1 is grounded through a capacitor C27 and a capacitor C28 which are arranged in parallel; The EN end of the first power chip U1 is grounded through a resistor R2; the RT/CLK end of the first power chip U1 is grounded through a resistor R3; after the EN end and the RT/CLK end of the first power chip U1 are connected in parallel, the EN end and the RT/CLK end of the first power chip U1 are connected with each other through a capacitor C1, a capacitor C2 and a capacitor C3 which are arranged in parallel; The VIN end and the EN end of the first power chip U1 are connected through a resistor R1; The BOOT end and the SW end of the first power chip U1 are connected through a capacitor C4; the SW end of the first power chip U1 is connected with the 5V voltage output end of the inductor L1, and the 5V voltage output end is connected with the radio frequency processing module; the SW end and the GND end of the first power chip U1 are connected through a capacitor C7, a capacitor C8, a capacitor C21 and a diode D13 which are arranged in parallel; The GND ground of the first power supply chip U1 is grounded; The FB end and the SW end of the first power chip U1 are connected through a resistor R5 and a capacitor C11 which are arranged in parallel; The FB end of the first power supply chip U1 is grounded through a resistor R6; The COMP end of the first power chip U1 is grounded after passing through a resistor R4 and a capacitor C6 and a capacitor C5 which are arranged in parallel. Preferably, the second power supply circuit includes a second power supply chip U14; The 5V voltage output end is connected with the VIN end of the second power supply chip U14; The SW end of the second power chip U14 is connected with the 3.3V voltage output end through an inductor L4; The SW end of the second power chip U14 is connected with the ST end of the second power chip U14 through a capacitor C59; The EN end of the second power chip U14 is connected with the VIN end of the second power chip U14 through a resistor R78; The FB terminal of the second power chip U14 is connected to the SW terminal of the second power chip U14 through a resistor R79 and a resistor R80 that are serially connected. Preferably, the input/output module comprises four paths of input/output circuits; the input/output circuit comprises an optical coupler U23 and an optical coupler U21; The 1 end of the optical coupler U23 is connected with the 3.3V digital signal output end through a resistor R38; the 2 end of the optical coupler U23 is connected with the output end GPO4 of the microcontroller; The 3 end of the optical co