CN202331512U - RFID (Radio Frequency Identification) mini reader-writer chip - Google Patents
RFID (Radio Frequency Identification) mini reader-writer chip Download PDFInfo
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- CN202331512U CN202331512U CN2011204470614U CN201120447061U CN202331512U CN 202331512 U CN202331512 U CN 202331512U CN 2011204470614 U CN2011204470614 U CN 2011204470614U CN 201120447061 U CN201120447061 U CN 201120447061U CN 202331512 U CN202331512 U CN 202331512U
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- rfid
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- power amplifier
- writer chip
- rfid interrogator
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Abstract
The utility model relates to a non-contact information identification system, in particular to an RFID (Radio Frequency Identification) mini reader-writer chip. The RFID mini reader-writer chip comprises an RFID reader-writer chip, wherein the RFID reader-writer chip is provided with a balancer, a power amplifier, an isolator, a coupler, an active crystal oscillator and a low dropout linear regulator; the RFID reader-writer chip is connected with the power amplifier by the balancer, and the power amplifier is connected with the coupler by the isolator; the RFID reader-writer chip is respectively connected with the coupler and the active crystal oscillator; and the low dropout linear regulator is respectively connected with the RFID reader-writer chip, the power amplifier and the active crystal oscillator. Because the non-contact information identification system adopts a hardware unit with high integration level, the size of the reader-writer chip is greatly reduced, so that the reader-writer chip is miniaturized and modularized and is convenient to embed into other equipment. In addition, the RFID reader-writer chip adapts to different action distance requirements of different use occasions.
Description
Technical field
The utility model relates to a kind of contactless information identification system, particularly a kind of RFID mini read write line chip.
Background technology
REID is a kind of automatic identification technology, and REID is to utilize wireless radio frequency mode to carry out the noncontact two-way communication, to reach identifying purpose and swap data.Between the electronic tag and read write line of rfid system, just need not contact and to accomplish identifying, therefore; The process of read write line identification electronic tag need not manual intervention, is suitable for realizing producing, the automatic management and the control of aspects such as logistics or personnel's safety check; And; Utilize the RFID technology can discern swiftly passing object, can discern a plurality of electronic tags simultaneously, swift to operate putting just.Rfid system mainly comprises rfid interrogator and two parts of RFID label: rfid interrogator is modulated to armed baseband signal on the carrier wave; Send to the RFID label; The unmodulated carrier wave of emission is launched the carrier wave that modulation needs in order to energy and label that the label continuous firing is provided continuously then; Label obtains energy from the carrier wave of read write line; According to the command content of the read write line that receives, the return message reflection modulation of label is loaded on the continuous carrier of read write line, read write line identifies the return signal of label from continuous carrier.Existing rfid interrogator volume is big, and integrated level is lower, and power consumption is high, and structure is complicated; Reading/writing distance is near, bad adaptability.
The utility model content
The purpose of the utility model is to overcome the above-mentioned deficiency of prior art, provides a kind of volume little, low in energy consumption, can adapt to the RFID mini read write line chip of the different effects required distance of different use occasions.
To achieve these goals, the technical scheme of the utility model employing is:
A kind of RFID mini read write line chip; Comprise the rfid interrogator chip; Also be provided with evener, power amplifier, isolator, coupling mechanism, active crystal oscillator, low pressure difference linear voltage regulator; Said rfid interrogator chip is connected with power amplifier through evener; Power amplifier is connected with coupling mechanism through isolator again; Said rfid interrogator chip is connected with active crystal oscillator with coupling mechanism respectively; Said low pressure difference linear voltage regulator is connected with rfid interrogator chip, power amplifier and active crystal oscillator respectively; Said rfid interrogator chip comprises microprocessing unit MCU, RF receiving and transmission module, modulation module, and said RF receiving and transmission module is connected with microprocessing unit MCU through the modulation module, and said microprocessing unit MCU also is connected with flash memory fash memory, high-speed cache SRAM, reset control circuit Reset control, house dog timing circuit WDT, timer Timers, universal asynchronous acceptance/dispensing device VART, SPI circuit SPI, port controller Port controller, universal serial bus I2C, interruptable controller Interupt controller and power supervisor power management through data bus.
In the above-mentioned RFID mini read write line chip, said RF receiving and transmission module is respectively arranged with emission port and accepts port.
In the above-mentioned RFID mini read write line chip, said rfid interrogator chip adopts RM9030.
The RFID mini read write line chip of the utility model; On the basis of original rfid interrogator chip; Rfid interrogator chip and peripherals evener, power amplifier, isolator, coupling mechanism, active crystal oscillator, low pressure difference linear voltage regulator are integrated, and the RF receiving and transmission module in the said rfid interrogator chip (RM9030) is respectively arranged with emission port and accepts port, and emission port is connected with power amplifier through evener; Power amplifier is connected with coupling mechanism through isolator again; Coupling mechanism is connected with exterior antenna again, after the radiofrequency signal that RF receiving and transmission module produces realizes amplifying through power amplifier, again through coupling mechanism and exterior antenna output; Accepting port directly is connected with exterior antenna through coupling mechanism.Because the output power maximum of rfid interrogator chip (RM9030) has only+23 dBm; Usually its output power is-14dBm～+ 10 dBm, and under such emissive power, system reads apart from maximum 30 cm that only have an appointment label; In order to reach the farther distance that reads; Need add a power amplifier module at the output terminal of rfid interrogator chip (RM9030),, can make RFID mini read write line chip adapt to different effects required distance in different use occasions in conjunction with the transmission power adjustment function of rfid interrogator chip (RM9030) self; The radiofrequency signal of amplifying through power amplifier directly gets into coupling mechanism; This signal gets into transmission channel through straight-through end, and the output signal of forward coupled end is used for forward power and detects, and the signal of reverse coupled end is used to detect the return loss of antenna end.The RFID mini read write line chip of the utility model is through integrating original rfid interrogator chip and peripheral circuit; Making entire RF ID mini read write line chip size is 15mm * 15mm * 0.9mm; Communication interfaces such as UART externally are provided, can be embedded into easily in other equipment and use.
The beneficial effect of the utility model is:The utility model is selected the high hardware cell of integrated level for use, has reduced the volume of read write line chip greatly, makes conveniently to embed miniaturization of read write line chip and modularization in the middle of the miscellaneous equipment; Power amplifier combines the transmission power adjustment function of rfid interrogator chip self; Can make the RFID mini read write line chip after integrated realize down that at the antenna of 8 dBi gain stablizing read-write apart from more than 3 m, makes RFID mini read write line chip adapt to the different effects required distance of different use occasions.
Description of drawings
Fig. 1 is the utility model RFID mini read write line chip carrier composition.
Fig. 2 is rfid interrogator chip (RM9030) Organization Chart.
Mark among the figure: among Fig. 1,101-RFID mini read write line chip, 102-RFID read write line chip (RM9030), 103-evener, 104-power amplifier, 105-isolator, 106-coupling mechanism, 107-low pressure difference linear voltage regulator LDO, the active crystal oscillator of 108-; Among Fig. 2,102-RFID read write line chip (RM9030), 202-modulation module, the 203-RF receiving and transmission module, 204-accepts port, 205-emission port, 206-microprocessing unit (MCU).
Embodiment
Below in conjunction with accompanying drawing, the utility model is done detailed explanation.
For the purpose, technical scheme and the advantage that make the utility model is clearer,, the utility model is further elaborated below in conjunction with accompanying drawing and embodiment.Should be appreciated that specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.
Embodiment 1
Shown in accompanying drawing 1, accompanying drawing 2; The RFID mini read write line chip 101 of the utility model; Comprise rfid interrogator chip (RM9030) 102; Also be provided with evener 103, power amplifier 104, isolator 105, coupling mechanism 106, active crystal oscillator 108, low pressure difference linear voltage regulator (LDO) 107 in the RFID mini read write line chip 101; Said rfid interrogator chip (RM9030) 102 is connected with power amplifier 104 through evener 103; Power amplifier 104 is connected with coupling mechanism 106 through isolator 105 again; Said rfid interrogator chip (RM9030) 102 is connected with active crystal oscillator 108 with coupling mechanism 106 respectively; Said low pressure difference linear voltage regulator (LDO) 107 is connected with rfid interrogator chip (RM9030) 102, power amplifier 104 and active crystal oscillator 108 respectively; Said rfid interrogator chip (RM9030) 102 comprises microprocessing unit (MCU) 206, RF receiving and transmission module 203, modulation module 202; Said RF receiving and transmission module 203 is connected with microprocessing unit (MCU) 206 through modulation module 202, and said microprocessing unit (MCU) 206 also is connected with flash memory (fash memory), high-speed cache (SRAM), reset control circuit (Reset control), house dog timing circuit (WDT), timer (Timers), universal asynchronous acceptance/dispensing device (VART), SPI circuit (SPI), port controller (Port controller), universal serial bus (I2C), interruptable controller (Interupt controller) and power supervisor (power management) through data bus.RF receiving and transmission module 203 in the said rfid interrogator chip (RM9030) 102 is respectively arranged with emission port 205 and accepts port 204; Emission port 205 is connected with power amplifier 104 through the evener 103 among Fig. 1; Power amplifier 104 is connected with coupling mechanism 106 through isolator 105 again, and coupling mechanism 106 is connected with exterior antenna again; Accepting port 204 directly is connected with 106 exterior antennas through coupling mechanism.
The above is merely the preferred embodiment of the utility model; Not in order to restriction the utility model; Any modification of being done within all spirit and principles at the utility model, be equal to replacement and improvement etc., all should be included within the protection domain of the utility model.
Claims (3)
1. RFID mini read write line chip; Comprise the rfid interrogator chip; It is characterized in that: also be provided with evener, power amplifier, isolator, coupling mechanism, active crystal oscillator, low pressure difference linear voltage regulator; Said rfid interrogator chip is connected with power amplifier through evener; Power amplifier is connected with coupling mechanism through isolator again; Said rfid interrogator chip is connected with active crystal oscillator with coupling mechanism respectively; Said low pressure difference linear voltage regulator is connected with rfid interrogator chip, power amplifier and active crystal oscillator respectively; Said rfid interrogator chip comprises microprocessing unit MCU, RF receiving and transmission module, modulation module, and said RF receiving and transmission module is connected with microprocessing unit MCU through the modulation module, and said microprocessing unit MCU also is connected with flash memory fash memory, high-speed cache SRAM, reset control circuit Reset control, house dog timing circuit WDT, timer Timers, universal asynchronous acceptance/dispensing device VART, SPI circuit SPI, port controller Port controller, universal serial bus I2C, interruptable controller Interupt controller and power supervisor power management through data bus.
2. RFID mini read write line chip according to claim 1 is characterized in that: said RF receiving and transmission module is respectively arranged with emission port and accepts port.
3. RFID mini read write line chip according to claim 1, it is characterized in that: said rfid interrogator chip is RM9030.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204470614U CN202331512U (en) | 2011-11-12 | 2011-11-12 | RFID (Radio Frequency Identification) mini reader-writer chip |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204470614U CN202331512U (en) | 2011-11-12 | 2011-11-12 | RFID (Radio Frequency Identification) mini reader-writer chip |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202331512U true CN202331512U (en) | 2012-07-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204470614U Expired - Fee Related CN202331512U (en) | 2011-11-12 | 2011-11-12 | RFID (Radio Frequency Identification) mini reader-writer chip |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202331512U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103400426A (en) * | 2013-07-22 | 2013-11-20 | 北京新一代照明有限公司 | Highway facility polling device and method |
| CN104091383A (en) * | 2014-07-09 | 2014-10-08 | 周作建 | Intelligent drug cabinet based on RFID (Radio Frequency Identification Devices) and RFID reading method of drug cabinet |
-
2011
- 2011-11-12 CN CN2011204470614U patent/CN202331512U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103400426A (en) * | 2013-07-22 | 2013-11-20 | 北京新一代照明有限公司 | Highway facility polling device and method |
| CN103400426B (en) * | 2013-07-22 | 2015-06-17 | 北京新一代照明有限公司 | Highway facility polling device and method |
| CN104091383A (en) * | 2014-07-09 | 2014-10-08 | 周作建 | Intelligent drug cabinet based on RFID (Radio Frequency Identification Devices) and RFID reading method of drug cabinet |
| CN104091383B (en) * | 2014-07-09 | 2016-08-31 | 江苏正融科技有限公司 | The RFID read-write method of intelligent medicine-chest based on RFID |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120711 Termination date: 20181112 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |