CN202870865U - RS232 interface ultrahigh frequency RFID read-write apparatus - Google Patents
RS232 interface ultrahigh frequency RFID read-write apparatus Download PDFInfo
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- CN202870865U CN202870865U CN 201220571136 CN201220571136U CN202870865U CN 202870865 U CN202870865 U CN 202870865U CN 201220571136 CN201220571136 CN 201220571136 CN 201220571136 U CN201220571136 U CN 201220571136U CN 202870865 U CN202870865 U CN 202870865U
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Abstract
The utility model discloses an RS232 interface ultrahigh frequency RFID read-write apparatus. The read-write apparatus comprises a U1 portion, a U2 portion, a U3 portion and a U4 portion, wherein the four portions are mutually connected to from circuits of the read-write apparatus. The U1 portion gives priority to a single-chip microcomputer AT89S52, and completes processing of an input signal and output of a control signal. The U2 portion gives priority to a chip AS3992, and completes generation and transmission of an intermediate frequency signal, and reading and writing and processing of an electronic label signal. The U3 portion gives priority to a chip SP3232, and completes RS232 interface output of electronic label data. The U4 portion gives priority to a chip TCD13, and completes conversion of the intermediate signal to a radio frequency signal. The read-write apparatus stores identity data of the label in a memory chip or outputs the identity data of the label through the RS232 interface or a Wiegand protocol interface.
Description
Technical field
The utility model relates to read write line, is specifically related to a kind of RS232 interface ultrahigh frequency RFID read-write equipment.
Background technology
The RFID technology is to begin a kind of automatic identification technology of rising and moving to maturity gradually the nineties in 20th century.It utilizes radiofrequency signal to realize the non-contact information transmission by Space Coupling, and the information of passing through to transmit reaches the purpose of identification.Basic rfid system is comprised of electronic tag, read write line, antenna and background host computer system.RFID has been thought to realize a kind of major technique of general calculation entironment by most people, it is application scenarios widely, and cheap cost is disposed the simplicity of implementing, and has attracted more and more user, researchist and IT vendor.
Summary of the invention
The purpose of this utility model is: a kind of RS232 interface ultrahigh frequency RFID read-write equipment is provided, read the passive label radiofrequency signal that receives from external antenna, export to after treatment single-chip microcomputer, the signal that single-chip microcomputer receives gets the identity information of outgoing label after treatment, export to the computing machine that has the RS232DCE interfacing equipment or have the RS232 interface by the RS232 interface, use as various computer data acquirings based on electronic tag or management information system.
Technical solution of the present utility model is: the radiofrequency signal that is sent the 900MHz characteristic frequency by read-write equipment by emitting antenna, when entering the emitting antenna perform region, the destination object that adheres to electronic tag produces induction current, be activated thereby obtain energy, so that electronic tag sends self coded message by built-in radio-frequency antenna; The receiving antenna of read-write equipment receives the modulation signal that sends from label, is sent to the read write line signal acquisition module through the antenna adjustments device, behind the demodulation code effective information is delivered to data processing module and carries out relevant treatment; Data processing module is identified the identity of this label according to logical operation, make corresponding processing and control for different settings, finally send command signal control read write line and finish different read-write operations, and the Identity data store of label is exported in storage chip or by RS232 output interface, Wiegand protocol interface;
Read-write equipment of the present utility model comprises U1 part, U2 part, U3 part and U4 part, and U1 part, U2 part, U3 part and U4 partly are interconnected to constitute the circuit of read-write equipment; The U1 part is finished the processing of input signal and the output of control signal take single chip computer AT 89S52 as main; The U2 part is finished read-write and the processing of intermediate-freuqncy signal generation, transmission and electronic tag signal take chip AS3992 as main; The U3 part is finished the RS232 interface output of electronic tag data take chip SP3232E as main; The U4 part is finished intermediate-freuqncy signal to the conversion of radiofrequency signal take chip TCD13 as main; Wherein, physical circuit connects as follows:
Single chip computer AT 89S52 part (U1):
The 1st pin of single chip computer AT 89S52 is connected to the 50th pin of chip AS3992; The 2nd pin of single chip computer AT 89S52 is connected to the 39th pin of chip AS3992; The 3rd pin of single chip computer AT 89S52 is connected to the 40th pin of chip AS3992; The 4th pin of single chip computer AT 89S52 is connected to the 49th pin of chip AS3992; The 5th pin of single chip computer AT 89S52 is unsettled; The 6th pin of single chip computer AT 89S52 is connected to the 4th pin of J3; The 7th pin of single chip computer AT 89S52 is connected to the 5th pin of J3; The 8th pin of single chip computer AT 89S52 is connected to the 6th pin of J3; The 9th pin of single chip computer AT 89S52 is connected to an end and the capacitor C D1 negative pole of resistance R 11, the other end ground connection of resistance R 16, and capacitor C D1 positive pole connects power supply; The 10th pin of single chip computer AT 89S52 is connected to the 9th pin of chip SP3232E; The 11st pin of single chip computer AT 89S52 is connected to the 10th pin of chip SP3232E; The 12nd pin to the 17 pins of single chip computer AT 89S52 are unsettled; The 18th pin of single chip computer AT 89S52 is connected to the end of capacitor C 11 and crystal oscillator Y12, capacitor C 11 other end ground connection; The 19th pin of single chip computer AT 89S52 is connected to the other end of capacitor C 12 and crystal oscillator Y2, the other end ground connection of capacitor C 12; The 20th pin ground connection of single chip computer AT 89S52; The 21st pin of single chip computer AT 89S52 is connected to the 1st pin of J1; The 22nd pin of single chip computer AT 89S52 is connected to the 2nd pin of J1; The 23rd pin of single chip computer AT 89S52 is connected to the 3rd pin of J1; The 24th pin of single chip computer AT 89S52 is connected to the 4th pin of J1; The 25th pin of single chip computer AT 89S52 is connected to the 5th pin of J1; The 26th pin of single chip computer AT 89S52 is connected to the 6th pin of J1; The 27th pin of single chip computer AT 89S52 is connected to the 7th pin of J1; The 28th pin to the 30 pins of single chip computer AT 89S52 are unsettled; The 31st pin of AT89S52 meets power supply VCC; The 32nd pin of single chip computer AT 89S52 is connected to the 48th pin of chip AS3992; The 33rd pin of single chip computer AT 89S52 is connected to the 47th pin of chip AS3992; The 34th pin of single chip computer AT 89S52 is connected to the 46th pin of chip AS3992; The 35th pin of single chip computer AT 89S52 is connected to the 45th pin of chip AS3992; The 36th pin of single chip computer AT 89S52 is connected to the 44th pin of chip AS3992; The 37th pin of single chip computer AT 89S52 is connected to the 43rd pin of chip AS3992; The 38th pin of single chip computer AT 89S52 is connected to the 42nd pin of chip AS3992; The 39th pin of single chip computer AT 89S52 is connected to the 41st pin of chip AS3992;
Chip AS3992 part (U2):
The 1st pin of chip AS3992 connects an end of capacitor C 21, capacitor C 21 other end ground connection; The 2nd pin of chip AS3992 connects an end of capacitor C 22, capacitor C 22 other end ground connection; The 3rd pin of chip AS3992 connects an end of capacitor C 23, capacitor C 23 other end ground connection; The 4th pin of chip AS3992 is unsettled; The 5th pin ground connection of chip AS3992; The 6th pin ground connection of chip AS3992; The 7th pin of chip AS3992 is unsettled; The 8th pin ground connection of chip AS3992; The 9th pin of chip AS3992 is unsettled; The 10th pin of chip AS3992 connects an end of capacitor C 210, and capacitor C 210 other ends are received the 6th pin of chip TCD13; The 11st pin ground connection of chip AS3992; The 12nd pin of chip AS3992 connects an end of capacitor C 212, capacitor C 212 other end ground connection; The 13rd pin of chip AS3992 connects an end of capacitor C 213, capacitor C 213 other end ground connection; The 14th pin of chip AS3992 connects an end of capacitor C 214, capacitor C 214 other end ground connection; The 15th pin ground connection of chip AS3992; The 16th pin of chip AS3992 connects an end of capacitor C 216, capacitor C 216 other end ground connection; The 17th pin of chip AS3992 connects an end of capacitor C 217, capacitor C 217 other end ground connection; The 18th pin of chip AS3992 connects capacitor C 218, one end of inductance L 21 and inductance L 22, capacitor C 218 other end ground connection, another termination capacitor C 227 of inductance L 21, one end of capacitor C 228 and the 27th pin of chip AS3992, the 28th pin, the other end ground connection of capacitor C 227, one end of another termination inductance L 23 of capacitor C 228, another termination capacitor C 201 1 ends of inductance L 23 and the input end of transformer Tl, the other end ground connection of capacitor C 201, another termination capacitor C 220 of inductance L 22, one end of capacitor C 221 and the 20th pin of chip AS3992, the 21st pin, the other end ground connection of capacitor C 220, one end of another termination inductance L 24 of capacitor C 221, another termination capacitor C 202 1 ends of inductance L 24 and another input end of transformer T1, the other end ground connection of capacitor C 202; The 19th pin of chip AS3992 connects an end of capacitor C 219, capacitor C 219 other end ground connection; The 20th pin of chip AS3992 and the 21st pin of chip AS3992 connect an end of capacitor C 220, capacitor C 221 and inductance L 24; The 22nd pin to the 26 pin ground connection of chip AS3992; The 27th pin of chip AS3992 and the 28th pin of chip AS3992 connect an end of capacitor C 227, capacitor C 228 and inductance L 21; The 29th pin ground connection of chip AS3992; The end of the 30th pin connecting resistance R230 of chip AS3992, the other end ground connection of resistance R 230; The end of the 31st pin connecting resistance R231 of chip AS3992, the other end ground connection of resistance R 231; The 32nd pin and the 33rd pin of chip AS3992 are unsettled; The 34th pin of chip AS3992 connects an end of capacitor C 234, capacitor C 234 other end ground connection; The 35th pin ground connection of chip AS3992; The 36th pin of chip AS3992 is connected to the end of capacitor C 236 and crystal oscillator Y21, the other end ground connection of capacitor C 236; The 37th pin of chip AS3992 is connected to the other end of capacitor C 237 and crystal oscillator Y21, the other end ground connection of capacitor C 237; The 38th pin of chip AS3992 meets power supply VCC; The 39th pin of chip AS3992 is connected to the 2nd pin of single chip computer AT 89S52; The 40th pin of chip AS3992 is connected to the 3rd pin of single chip computer AT 89S52; The 41st pin of chip AS3992 is connected to the 39th pin of single chip computer AT 89S52; The 42nd pin of chip AS3992 is connected to the 38th pin of single chip computer AT 89S52; The 43rd pin of chip AS3992 is connected to the 37th pin of single chip computer AT 89S52; The 44th pin of chip AS3992 is connected to the 36th pin of single chip computer AT 89S52; The 45th pin of chip AS3992 is connected to the 35th pin of single chip computer AT 89S52; The 46th pin of chip AS3992 is connected to the 34th pin of single chip computer AT 89S52; The 47th pin of chip AS3992 is connected to the 33rd pin of single chip computer AT 89S52; The 48th pin of chip AS3992 is connected to the 32nd pin of single chip computer AT 89S52; The 49th pin of chip AS3992 is connected to the 4th pin of single chip computer AT 89S52; The 50th pin of chip AS3992 is connected to the 1st pin of single chip computer AT 89S52; The 51st pin of chip AS3992 meets power supply VCC; The 52nd pin of chip AS3992 connects an end of capacitor C 252, capacitor C 252 other end ground connection; The 53rd pin of chip AS3992 connects an end of capacitor C 253, capacitor C 253 other end ground connection; The 54th pin ground connection of chip AS3992; The 55th pin ground connection of chip AS3992; The 56th pin of chip AS3992 is unsettled; The 57th pin ground connection of chip AS3992; The 58th pin ground connection of chip AS3992; The 59th pin of chip AS3992 connects an end of capacitor C 259, capacitor C 259 other end ground connection; The end of the 60th pin connecting resistance R260 of chip AS3992, the other end ground connection of resistance R 260; The 61st pin of chip AS3992 connects an end of capacitor C 261, capacitor C 261 other end ground connection; The 62nd pin of chip AS3992 connects an end of capacitor C 262, capacitor C 262 other end ground connection; The 63rd pin of chip AS3992 connects an end of capacitor C 263, capacitor C 263 other end ground connection; The 64th pin of chip AS3992 connects an end of capacitor C 264, capacitor C 264 other end ground connection;
Chip SP3232E part (U3):
The anode of capacitor C 21 is connected to the 1st pin of chip SP3232E, and negative terminal is connected to the 3rd pin of chip SP3232E; The anode of capacitor C 22 is connected to the 4th pin of chip SP3232E, and negative terminal is connected to the 5th pin of chip SP3232E; One end of capacitor C 23 is connected to the 16th pin of VCC and chip SP3232E, and the other end is connected to the 2nd pin of chip SP3232E; One end ground connection of capacitor C 24 and the 15th pin of chip SP3232E, the other end is connected to the 6th pin of chip SP3232E; The 1st pin of chip SP3232E is connected to the anode of capacitor C 21; The 2nd pin of chip SP3232E is connected to an end of capacitor C 23; The 3rd pin of chip SP3232E is connected to the negative terminal of capacitor C 21; The 4th pin of chip SP3232E is connected to the anode of capacitor C 22; The 5th pin of chip SP3232E is connected to the negative terminal of capacitor C 22; The 6th pin of chip SP3232E is connected to an end of capacitor C 14; The 7th pin of chip SP3232E is connected to the 2nd pin of DB9 among the J4; The 8th pin of chip SP3232E is connected to the 3rd pin of DB9 among the J4; The 9th pin of chip SP3232E is connected to the 10th pin of single chip computer AT 89S52; The 10th pin of chip SP3232E is connected to the 11st pin of single chip computer AT 89S52; The 11st pin ground connection of chip SP3232E; The 12nd pin of chip SP3232E is unsettled; The 13rd pin ground connection of chip SP3232E; The 14th pin of chip SP3232E is unsettled; The 15th pin ground connection of chip SP3232E and an end of capacitor C 24; The 16th pin of chip SP3232E connects an end of VCC and capacitor C 13; The 1st pin of DB9 is unsettled among the J4; The 2nd pin of DB9 is connected to the 7th pin of chip SP3232E among the J4; The 3rd pin of DB9 is connected to the 8th pin of chip SP3232E among the J4; The 4th pin of DB9 is unsettled among the J4; The 5th pin ground connection of DB9 among the J4; The 6th pin to the 9 pins of DB9 are unsettled among the J4;
Chip TCD13 part (U4):
The end of the 1st pin connecting resistance R41 of chip TCD13, the other end ground connection of resistance R 41; The 2nd pin ground connection of chip TCD13; The 3rd pin of chip TCD13 connects output one end of transformer T1, another output head grounding of transformer T1; The 4th pin of chip TCD13 is connected to the 2nd pin and the 3rd pin of J2, the 1st pin of J2 and the 4th pin ground connection; The 5th pin of chip TCD13 is unsettled; The 6th pin of chip TCD13 connects an end of capacitor C 210, and capacitor C 210 other ends are connected to the 10th pin of chip AS3992.
Wherein, connect input interface and output interface on the circuit of the present utility model and come settling signal collection and data output, input interface is rf input interface, and output interface comprises RS232 output interface, Wiegand protocol output interface.
The utlity model has following advantage: 1, the acp chip of the passive label radiofrequency signal data acquisition module in the read-write equipment is the AS3992 chip, is 64 pin integrated chips, and function is strong, and is low in energy consumption, is operated in the 900MHz hyper band; The acp chip of data processing module is the AT89S52 chip, and it has 32 programmable Is/O mouth, and fully compatible with the MCS-51 instruction, and it is available that inside is accompanied with the RAM of 256B, and the erasable FLASH of 8KB etc. is arranged; In this device, be stored in the AT89S52 chip through the electronic tag data after the AT89S52 processing, also can pass through RS232 output interface, the output of Wiegand protocol interface; The chip price of the circuit of this read-write equipment is cheap, and chip pin is few, and circuit is simple.2, the volume of this read-write equipment is little, and cost is low, and is low in energy consumption, realize contactless read-write and storage and the output of a plurality of passive label radio-frequency (RF) tag, and antijamming capability is strong, and security performance is good.
Description of drawings
Fig. 1 is circuit theory diagrams of the present utility model.
Embodiment
Further specify technical solution of the present utility model below in conjunction with accompanying drawing.
As shown in Figure 1, read-write equipment comprises U1 part, U2 part, U3 part and U4 part, and U1 part, U2 part, U3 part and U4 partly are interconnected to constitute the circuit of read-write equipment, and wherein, physical circuit connects as follows:
Single chip computer AT 89S52 part (U1):
The 1st pin of single chip computer AT 89S52 is connected to the 50th pin of chip AS3992; The 2nd pin of single chip computer AT 89S52 is connected to the 39th pin of chip AS3992; The 3rd pin of single chip computer AT 89S52 is connected to the 40th pin of chip AS3992; The 4th pin of single chip computer AT 89S52 is connected to the 49th pin of chip AS3992; The 5th pin of single chip computer AT 89S52 is unsettled; The 6th pin of single chip computer AT 89S52 is connected to the 4th pin of J3; The 7th pin of single chip computer AT 89S52 is connected to the 5th pin of J3; The 8th pin of single chip computer AT 89S52 is connected to the 6th pin of J3; The 9th pin of single chip computer AT 89S52 is connected to an end and the capacitor C D1 negative pole of resistance R 11, the other end ground connection of resistance R 16, and capacitor C D1 positive pole connects power supply; The 10th pin of single chip computer AT 89S52 is connected to the 9th pin of chip SP3232E; The 11st pin of single chip computer AT 89S52 is connected to the 10th pin of chip SP3232E; The 12nd pin to the 17 pins of single chip computer AT 89S52 are unsettled; The 18th pin of single chip computer AT 89S52 is connected to the end of capacitor C 11 and crystal oscillator Y12, capacitor C 11 other end ground connection; The 19th pin of single chip computer AT 89S52 is connected to the other end of capacitor C 12 and crystal oscillator Y2, the other end ground connection of capacitor C 12; The 20th pin ground connection of single chip computer AT 89S52; The 21st pin of single chip computer AT 89S52 is connected to the 1st pin of J1; The 22nd pin of single chip computer AT 89S52 is connected to the 2nd pin of J1; The 23rd pin of single chip computer AT 89S52 is connected to the 3rd pin of J1; The 24th pin of single chip computer AT 89S52 is connected to the 4th pin of J1; The 25th pin of single chip computer AT 89S52 is connected to the 5th pin of J1; The 26th pin of single chip computer AT 89S52 is connected to the 6th pin of J1; The 27th pin of single chip computer AT 89S52 is connected to the 7th pin of J1; The 28th pin to the 30 pins of single chip computer AT 89S52 are unsettled; The 31st pin of AT89S52 meets power supply VCC; The 32nd pin of single chip computer AT 89S52 is connected to the 48th pin of chip AS3992; The 33rd pin of single chip computer AT 89S52 is connected to the 47th pin of chip AS3992; The 34th pin of single chip computer AT 89S52 is connected to the 46th pin of chip AS3992; The 35th pin of single chip computer AT 89S52 is connected to the 45th pin of chip AS3992; The 36th pin of single chip computer AT 89S52 is connected to the 44th pin of chip AS3992; The 37th pin of single chip computer AT 89S52 is connected to the 43rd pin of chip AS3992; The 38th pin of single chip computer AT 89S52 is connected to the 42nd pin of chip AS3992; The 39th pin of single chip computer AT 89S52 is connected to the 41st pin of chip AS3992;
Chip AS3992 part (U2):
The 1st pin of chip AS3992 connects an end of capacitor C 21, capacitor C 21 other end ground connection; The 2nd pin of chip AS3992 connects an end of capacitor C 22, capacitor C 22 other end ground connection; The 3rd pin of chip AS3992 connects an end of capacitor C 23, capacitor C 23 other end ground connection; The 4th pin of chip AS3992 is unsettled; The 5th pin ground connection of chip AS3992; The 6th pin ground connection of chip AS3992; The 7th pin of chip AS3992 is unsettled; The 8th pin ground connection of chip AS3992; The 9th pin of chip AS3992 is unsettled; The 10th pin of chip AS3992 connects an end of capacitor C 210, and capacitor C 210 other ends are received the 6th pin of chip TCD13; The 11st pin ground connection of chip AS3992; The 12nd pin of chip AS3992 connects an end of capacitor C 212, capacitor C 212 other end ground connection; The 13rd pin of chip AS3992 connects an end of capacitor C 213, capacitor C 213 other end ground connection; The 14th pin of chip AS3992 connects an end of capacitor C 214, capacitor C 214 other end ground connection; The 15th pin ground connection of chip AS3992; The 16th pin of chip AS3992 connects an end of capacitor C 216, capacitor C 216 other end ground connection; The 17th pin of chip AS3992 connects an end of capacitor C 217, capacitor C 217 other end ground connection; The 18th pin of chip AS3992 connects capacitor C 218, one end of inductance L 21 and inductance L 22, capacitor C 218 other end ground connection, another termination capacitor C 227 of inductance L 21, one end of capacitor C 228 and the 27th pin of chip AS3992, the 28th pin, the other end ground connection of capacitor C 227, one end of another termination inductance L 23 of capacitor C 228, another termination capacitor C 201 1 ends of inductance L 23 and the input end of transformer T1, the other end ground connection of capacitor C 201, another termination capacitor C 220 of inductance L 22, one end of capacitor C 221 and the 20th pin of chip AS3992, the 21st pin, the other end ground connection of capacitor C 220, one end of another termination inductance L 24 of capacitor C 221, another termination capacitor C 202 1 ends of inductance L 24 and another input end of transformer T1, the other end ground connection of capacitor C 202; The 19th pin of chip AS3992 connects an end of capacitor C 219, capacitor C 219 other end ground connection; The 20th pin of chip AS3992 and the 21st pin of chip AS3992 connect an end of capacitor C 220, capacitor C 221 and inductance L 24; The 22nd pin to the 26 pin ground connection of chip AS3992; The 27th pin of chip AS3992 and the 28th pin of chip AS3992 connect an end of capacitor C 227, capacitor C 228 and inductance L 21; The 29th pin ground connection of chip AS3992; The end of the 30th pin connecting resistance R230 of chip AS3992, the other end ground connection of resistance R 230; The end of the 31st pin connecting resistance R231 of chip AS3992, the other end ground connection of resistance R 231; The 32nd pin and the 33rd pin of chip AS3992 are unsettled; The 34th pin of chip AS3992 connects an end of capacitor C 234, capacitor C 234 other end ground connection; The 35th pin ground connection of chip AS3992; The 36th pin of chip AS3992 is connected to the end of capacitor C 236 and crystal oscillator Y21, the other end ground connection of capacitor C 236; The 37th pin of chip AS3992 is connected to the other end of capacitor C 237 and crystal oscillator Y21, the other end ground connection of capacitor C 237; The 38th pin of chip AS3992 meets power supply VCC; The 39th pin of chip AS3992 is connected to the 2nd pin of single chip computer AT 89S52; The 40th pin of chip AS3992 is connected to the 3rd pin of single chip computer AT 89S52; The 41st pin of chip AS3992 is connected to the 39th pin of single chip computer AT 89S52; The 42nd pin of chip AS3992 is connected to the 38th pin of single chip computer AT 89S52; The 43rd pin of chip AS3992 is connected to the 37th pin of single chip computer AT 89S52; The 44th pin of chip AS3992 is connected to the 36th pin of single chip computer AT 89S52; The 45th pin of chip AS3992 is connected to the 35th pin of single chip computer AT 89S52; The 46th pin of chip AS3992 is connected to the 34th pin of single chip computer AT 89S52; The 47th pin of chip AS3992 is connected to the 33rd pin of single chip computer AT 89S52; The 48th pin of chip AS3992 is connected to the 32nd pin of single chip computer AT 89S52; The 49th pin of chip AS3992 is connected to the 4th pin of single chip computer AT 89S52; The 50th pin of chip AS3992 is connected to the 1st pin of single chip computer AT 89S52; The 51st pin of chip AS3992 meets power supply VCC; The 52nd pin of chip AS3992 connects an end of capacitor C 252, capacitor C 252 other end ground connection; The 53rd pin of chip AS3992 connects an end of capacitor C 253, capacitor C 253 other end ground connection; The 54th pin ground connection of chip AS3992; The 55th pin ground connection of chip AS3992; The 56th pin of chip AS3992 is unsettled; The 57th pin ground connection of chip AS3992; The 58th pin ground connection of chip AS3992; The 59th pin of chip AS3992 connects an end of capacitor C 259, capacitor C 259 other end ground connection; The end of the 60th pin connecting resistance R260 of chip AS3992, the other end ground connection of resistance R 260; The 61st pin of chip AS3992 connects an end of capacitor C 261, capacitor C 261 other end ground connection; The 62nd pin of chip AS3992 connects an end of capacitor C 262, capacitor C 262 other end ground connection; The 63rd pin of chip AS3992 connects an end of capacitor C 263, capacitor C 263 other end ground connection; The 64th pin of chip AS3992 connects an end of capacitor C 264, capacitor C 264 other end ground connection;
Chip SP3232E part (U3):
The anode of capacitor C 21 is connected to the 1st pin of chip SP3232E, and negative terminal is connected to the 3rd pin of chip SP3232E; The anode of capacitor C 22 is connected to the 4th pin of chip SP3232E, and negative terminal is connected to the 5th pin of chip SP3232E; One end of capacitor C 23 is connected to the 16th pin of VCC and chip SP3232E, and the other end is connected to the 2nd pin of chip SP3232E; One end ground connection of capacitor C 24 and the 15th pin of chip SP3232E, the other end is connected to the 6th pin of chip SP3232E; The 1st pin of chip SP3232E is connected to the anode of capacitor C 21; The 2nd pin of chip SP3232E is connected to an end of capacitor C 23; The 3rd pin of chip SP3232E is connected to the negative terminal of capacitor C 21; The 4th pin of chip SP3232E is connected to the anode of capacitor C 22; The 5th pin of chip SP3232E is connected to the negative terminal of capacitor C 22; The 6th pin of chip SP3232E is connected to an end of capacitor C 14; The 7th pin of chip SP3232E is connected to the 2nd pin of DB9 among the J4; The 8th pin of chip SP3232E is connected to the 3rd pin of DB9 among the J4; The 9th pin of chip SP3232E is connected to the 10th pin of single chip computer AT 89S52; The 10th pin of chip SP3232E is connected to the 11st pin of single chip computer AT 89S52; The 11st pin ground connection of chip SP3232E; The 12nd pin of chip SP3232E is unsettled; The 13rd pin ground connection of chip SP3232E; The 14th pin of chip SP3232E is unsettled; The 15th pin ground connection of chip SP3232E and an end of capacitor C 24; The 16th pin of chip SP3232E connects an end of VCC and capacitor C 13; The 1st pin of DB9 is unsettled among the J4; The 2nd pin of DB9 is connected to the 7th pin of chip SP3232E among the J4; The 3rd pin of DB9 is connected to the 8th pin of chip SP3232E among the J4; The 4th pin of DB9 is unsettled among the J4; The 5th pin ground connection of DB9 among the J4; The 6th pin to the 9 pins of DB9 are unsettled among the J4;
Chip TCD13 part (U4):
The end of the 1st pin connecting resistance R41 of chip TCD13, the other end ground connection of resistance R 41; The 2nd pin ground connection of chip TCD13; The 3rd pin of chip TCD13 connects output one end of transformer T1, another output head grounding of transformer T1; The 4th pin of chip TCD13 is connected to the 2nd pin and the 3rd pin of J2, the 1st pin of J2 and the 4th pin ground connection; The 5th pin of chip TCD13 is unsettled; The 6th pin of chip TCD13 connects an end of capacitor C 210, and capacitor C 210 other ends are connected to the 10th pin of chip AS3992.
The explanation of product running environment:
The development system environment:
Windows?XP?Professional(Build?2600.xpsp_sp2_gdr.050301-1510(Service?Pack?2))
Exploitation programmed environment: Keil C51 programming language.
Claims (2)
1. RS232 interface ultrahigh frequency RFID read-write equipment is characterized in that: read-write equipment comprises U1 part, U2 part, U3 part and U4 part, and U1 part, U2 part, U3 part and U4 partly are interconnected to constitute the circuit of read-write equipment; The U1 part is finished the processing of input signal and the output of control signal take single chip computer AT 89S52 as main; The U2 part is finished read-write and the processing of intermediate-freuqncy signal generation, transmission and electronic tag signal take chip AS3992 as main; The U3 part is finished the RS232 interface output of electronic tag data take chip SP3232E as main; The U4 part is finished intermediate-freuqncy signal to the conversion of radiofrequency signal take chip TCD13 as main; Wherein, physical circuit connects as follows:
Single chip computer AT 89S52 part (U1):
The 1st pin of single chip computer AT 89S52 is connected to the 50th pin of chip AS3992; The 2nd pin of single chip computer AT 89S52 is connected to the 39th pin of chip AS3992; The 3rd pin of single chip computer AT 89S52 is connected to the 40th pin of chip AS3992; The 4th pin of single chip computer AT 89S52 is connected to the 49th pin of chip AS3992; The 5th pin of single chip computer AT 89S52 is unsettled; The 6th pin of single chip computer AT 89S52 is connected to the 4th pin of J3; The 7th pin of single chip computer AT 89S52 is connected to the 5th pin of J3; The 8th pin of single chip computer AT 89S52 is connected to the 6th pin of J3; The 9th pin of single chip computer AT 89S52 is connected to an end and the capacitor C D1 negative pole of resistance R 11, the other end ground connection of resistance R 16, and capacitor C D1 positive pole connects power supply; The 10th pin of single chip computer AT 89S52 is connected to the 9th pin of chip SP3232E; The 11st pin of single chip computer AT 89S52 is connected to the 10th pin of chip SP3232E; The 12nd pin to the 17 pins of single chip computer AT 89S52 are unsettled; The 18th pin of single chip computer AT 89S52 is connected to the end of capacitor C 11 and crystal oscillator Y12, capacitor C 11 other end ground connection; The 19th pin of single chip computer AT 89S52 is connected to the other end of capacitor C 12 and crystal oscillator Y2, the other end ground connection of capacitor C 12; The 20th pin ground connection of single chip computer AT 89S52; The 21st pin of single chip computer AT 89S52 is connected to the 1st pin of J1; The 22nd pin of single chip computer AT 89S52 is connected to the 2nd pin of J1; The 23rd pin of single chip computer AT 89S52 is connected to the 3rd pin of J1; The 24th pin of single chip computer AT 89S52 is connected to the 4th pin of J1; The 25th pin of single chip computer AT 89S52 is connected to the 5th pin of J1; The 26th pin of single chip computer AT 89S52 is connected to the 6th pin of J1; The 27th pin of single chip computer AT 89S52 is connected to the 7th pin of J1; The 28th pin to the 30 pins of single chip computer AT 89S52 are unsettled; The 31st pin of AT89S52 meets power supply VCC; The 32nd pin of single chip computer AT 89S52 is connected to the 48th pin of chip AS3992; The 33rd pin of single chip computer AT 89S52 is connected to the 47th pin of chip AS3992; The 34th pin of single chip computer AT 89S52 is connected to the 46th pin of chip AS3992; The 35th pin of single chip computer AT 89S52 is connected to the 45th pin of chip AS3992; The 36th pin of single chip computer AT 89S52 is connected to the 44th pin of chip AS3992; The 37th pin of single chip computer AT 89S52 is connected to the 43rd pin of chip AS3992; The 38th pin of single chip computer AT 89S52 is connected to the 42nd pin of chip AS3992; The 39th pin of single chip computer AT 89S52 is connected to the 41st pin of chip AS3992;
Chip AS3992 part (U2):
The 1st pin of chip AS3992 connects an end of capacitor C 21, capacitor C 21 other end ground connection; The 2nd pin of chip AS3992 connects an end of capacitor C 22, capacitor C 22 other end ground connection; The 3rd pin of chip AS3992 connects an end of capacitor C 23, capacitor C 23 other end ground connection; The 4th pin of chip AS3992 is unsettled; The 5th pin ground connection of chip AS3992; The 6th pin ground connection of chip AS3992; The 7th pin of chip AS3992 is unsettled; The 8th pin ground connection of chip AS3992; The 9th pin of chip AS3992 is unsettled; The 10th pin of chip AS3992 connects an end of capacitor C 210, and capacitor C 210 other ends are received the 6th pin of chip TCD13; The 11st pin ground connection of chip AS3992; The 12nd pin of chip AS3992 connects an end of capacitor C 212, capacitor C 212 other end ground connection; The 13rd pin of chip AS3992 connects an end of capacitor C 213, capacitor C 213 other end ground connection; The 14th pin of chip AS3992 connects an end of capacitor C 214, capacitor C 214 other end ground connection; The 15th pin ground connection of chip AS3992; The 16th pin of chip AS3992 connects an end of capacitor C 216, capacitor C 216 other end ground connection; The 17th pin of chip AS3992 connects an end of capacitor C 217, capacitor C 217 other end ground connection; The 18th pin of chip AS3992 connects capacitor C 218, one end of inductance L 21 and inductance L 22, capacitor C 218 other end ground connection, another termination capacitor C 227 of inductance L 21, one end of capacitor C 228 and the 27th pin of chip AS3992, the 28th pin, the other end ground connection of capacitor C 227, one end of another termination inductance L 23 of capacitor C 228, another termination capacitor C 201 1 ends of inductance L 23 and the input end of transformer T1, the other end ground connection of capacitor C 201, another termination capacitor C 220 of inductance L 22, one end of capacitor C 221 and the 20th pin of chip AS3992, the 21st pin, the other end ground connection of capacitor C 220, one end of another termination inductance L 24 of capacitor C 221, another termination capacitor C 202 1 ends of inductance L 24 and another input end of transformer T1, the other end ground connection of capacitor C 202; The 19th pin of chip AS3992 connects an end of capacitor C 219, capacitor C 219 other end ground connection; The 20th pin of chip AS3992 and the 21st pin of chip AS3992 connect an end of capacitor C 220, capacitor C 221 and inductance L 24; The 22nd pin to the 26 pin ground connection of chip AS3992; The 27th pin of chip AS3992 and the 28th pin of chip AS3992 connect an end of capacitor C 227, capacitor C 228 and inductance L 21; The 29th pin ground connection of chip AS3992; The end of the 30th pin connecting resistance R230 of chip AS3992, the other end ground connection of resistance R 230; The end of the 31st pin connecting resistance R231 of chip AS3992, the other end ground connection of resistance R 231; The 32nd pin and the 33rd pin of chip AS3992 are unsettled; The 34th pin of chip AS3992 connects an end of capacitor C 234, capacitor C 234 other end ground connection; The 35th pin ground connection of chip AS3992; The 36th pin of chip AS3992 is connected to the end of capacitor C 236 and crystal oscillator Y21, the other end ground connection of capacitor C 236; The 37th pin of chip AS3992 is connected to the other end of capacitor C 237 and crystal oscillator Y21, the other end ground connection of capacitor C 237; The 38th pin of chip AS3992 meets power supply VCC; The 39th pin of chip AS3992 is connected to the 2nd pin of single chip computer AT 89S52; The 40th pin of chip AS3992 is connected to the 3rd pin of single chip computer AT 89S52; The 41st pin of chip AS3992 is connected to the 39th pin of single chip computer AT 89S52; The 42nd pin of chip AS3992 is connected to the 38th pin of single chip computer AT 89S52; The 43rd pin of chip AS3992 is connected to the 37th pin of single chip computer AT 89S52; The 44th pin of chip AS3992 is connected to the 36th pin of single chip computer AT 89S52; The 45th pin of chip AS3992 is connected to the 35th pin of single chip computer AT 89S52; The 46th pin of chip AS3992 is connected to the 34th pin of single chip computer AT 89S52; The 47th pin of chip AS3992 is connected to the 33rd pin of single chip computer AT 89S52; The 48th pin of chip AS3992 is connected to the 32nd pin of single chip computer AT 89S52; The 49th pin of chip AS3992 is connected to the 4th pin of single chip computer AT 89S52; The 50th pin of chip AS3992 is connected to the 1st pin of single chip computer AT 89S52; The 51st pin of chip AS3992 meets power supply VCC; The 52nd pin of chip AS3992 connects an end of capacitor C 252, capacitor C 252 other end ground connection; The 53rd pin of chip AS3992 connects an end of capacitor C 253, capacitor C 253 other end ground connection; The 54th pin ground connection of chip AS3992; The 55th pin ground connection of chip AS3992; The 56th pin of chip AS3992 is unsettled; The 57th pin ground connection of chip AS3992; The 58th pin ground connection of chip AS3992; The 59th pin of chip AS3992 connects an end of capacitor C 259, capacitor C 259 other end ground connection; The end of the 60th pin connecting resistance R260 of chip AS3992, the other end ground connection of resistance R 260; The 61st pin of chip AS3992 connects an end of capacitor C 261, capacitor C 261 other end ground connection; The 62nd pin of chip AS3992 connects an end of capacitor C 262, capacitor C 262 other end ground connection; The 63rd pin of chip AS3992 connects an end of capacitor C 263, capacitor C 263 other end ground connection; The 64th pin of chip AS3992 connects an end of capacitor C 264, capacitor C 264 other end ground connection;
Chip SP3232E part (U3):
The anode of capacitor C 21 is connected to the 1st pin of chip SP3232E, and negative terminal is connected to the 3rd pin of chip SP3232E; The anode of capacitor C 22 is connected to the 4th pin of chip SP3232E, and negative terminal is connected to the 5th pin of chip SP3232E; One end of capacitor C 23 is connected to the 16th pin of VCC and chip SP3232E, and the other end is connected to the 2nd pin of chip SP3232E; One end ground connection of capacitor C 24 and the 15th pin of chip SP3232E, the other end is connected to the 6th pin of chip SP3232E; The 1st pin of chip SP3232E is connected to the anode of capacitor C 21; The 2nd pin of chip SP3232E is connected to an end of capacitor C 23; The 3rd pin of chip SP3232E is connected to the negative terminal of capacitor C 21; The 4th pin of chip SP3232E is connected to the anode of capacitor C 22; The 5th pin of chip SP3232E is connected to the negative terminal of capacitor C 22; The 6th pin of chip SP3232E is connected to an end of capacitor C 14; The 7th pin of chip SP3232E is connected to the 2nd pin of DB9 among the J4; The 8th pin of chip SP3232E is connected to the 3rd pin of DB9 among the J4; The 9th pin of chip SP3232E is connected to the 10th pin of single chip computer AT 89S52; The 10th pin of chip SP3232E is connected to the 11st pin of single chip computer AT 89S52; The 11st pin ground connection of chip SP3232E; The 12nd pin of chip SP3232E is unsettled; The 13rd pin ground connection of chip SP3232E; The 14th pin of chip SP3232E is unsettled; The 15th pin ground connection of chip SP3232E and an end of capacitor C 24; The 16th pin of chip SP3232E connects an end of VCC and capacitor C 13; The 1st pin of DB9 is unsettled among the J4; The 2nd pin of DB9 is connected to the 7th pin of chip SP3232E among the J4; The 3rd pin of DB9 is connected to the 8th pin of chip SP3232E among the J4; The 4th pin of DB9 is unsettled among the J4; The 5th pin ground connection of DB9 among the J4; The 6th pin to the 9 pins of DB9 are unsettled among the J4;
Chip TCD13 part (U4):
The end of the 1st pin connecting resistance R41 of chip TCD13, the other end ground connection of resistance R 41; The 2nd pin ground connection of chip TCD13; The 3rd pin of chip TCD13 connects output one end of transformer T1, another output head grounding of transformer T1; The 4th pin of chip TCD13 is connected to the 2nd pin and the 3rd pin of J2, the 1st pin of J2 and the 4th pin ground connection; The 5th pin of chip TCD13 is unsettled; The 6th pin of chip TCD13 connects an end of capacitor C 210, and capacitor C 210 other ends are connected to the 10th pin of chip AS3992.
2. a kind of RS232 interface ultrahigh frequency RFID read-write equipment according to claim 1, it is characterized in that: wherein, connect input interface and output interface on the circuit of read-write equipment and come settling signal collection and data output, input interface is rf input interface, and output interface comprises RS232 output interface, Wiegand protocol output interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220571136 CN202870865U (en) | 2012-11-02 | 2012-11-02 | RS232 interface ultrahigh frequency RFID read-write apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220571136 CN202870865U (en) | 2012-11-02 | 2012-11-02 | RS232 interface ultrahigh frequency RFID read-write apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202870865U true CN202870865U (en) | 2013-04-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220571136 Expired - Fee Related CN202870865U (en) | 2012-11-02 | 2012-11-02 | RS232 interface ultrahigh frequency RFID read-write apparatus |
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| Country | Link |
|---|---|
| CN (1) | CN202870865U (en) |
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2012
- 2012-11-02 CN CN 201220571136 patent/CN202870865U/en not_active Expired - Fee Related
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Granted publication date: 20130410 Termination date: 20131102 |