CN203490705U - RFID reader circuit of automobile anti-theft system - Google Patents
RFID reader circuit of automobile anti-theft system Download PDFInfo
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- CN203490705U CN203490705U CN201320580956.4U CN201320580956U CN203490705U CN 203490705 U CN203490705 U CN 203490705U CN 201320580956 U CN201320580956 U CN 201320580956U CN 203490705 U CN203490705 U CN 203490705U
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- electric capacity
- transponder chip
- resistance
- inductance
- rfid reader
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Abstract
The utility model discloses an RFID reader circuit of an automobile anti-theft system. The RFID reader circuit comprises a power supply, a transceiver chip, an antenna, first to tenth capacitors, first to third inductors, first to fourth resistors, and a crystal oscillator. According to the utility model, the transceiver chip of a Manchester coding mode is adopted so that the simultaneous reading and writing of multiple cards can be allowed without conflictions; multiple types of electronic labels can be matched, and the identity recognition can be completed instantaneously; a CAN bus is employed to communicate with a central computer of an automobile so that the communication is ensured to be smooth and the communication anti-interference capability of the anti-theft system is increased; and the RFID reader circuit has relatively good popularization values.
Description
Technical field
The utility model relates to a kind of reader circuitry, relates in particular to a kind of RFID reader circuitry of automotive theft proof system.
Background technology
Along with scientific and technological development, alarms and security systems for automobiles is increasingly tight and perfect, alarm can divide four large classes by its structure and function at present: mechanical type, electronic type, chip type and network type, although respectively there is quality, but the developing direction of automobile burglar is to the higher chip type of degree of intelligence and network type development, RFID automotive theft proof system belongs to chip type burglary-resisting system, it is the new application of RFID, RFID technology is to utilize RF-wise to carry out contactless two-way communication mode to come swap data to reach identifying purpose, rfid system is the core component of this automotive theft proof system, generally by label, reader, radio-frequency antenna three parts form, reader is used for reading (can also write in read-write card) label information, radio-frequency antenna for transmitting radiofrequency signal between label and reader, most of reader circuitry running time is longer now, interference free performance is poor.
Utility model content
The purpose of this utility model is just to provide in order to address the above problem a kind of RFID reader circuitry of jamproof automotive theft proof system.
The utility model is achieved through the following technical solutions above-mentioned purpose:
The utility model comprises power supply, transponder chip, antenna, the first electric capacity, the second electric capacity, the 3rd electric capacity, the 4th electric capacity, the 5th electric capacity, the 6th electric capacity, the 7th electric capacity, the 8th electric capacity, the 9th electric capacity, the tenth electric capacity, the first inductance, the second inductance, the 3rd inductance, the first resistance, the second resistance, the 3rd resistance, the 4th resistance and crystal oscillator, the first end of described the first electric capacity, the first end of described the second electric capacity, the equal ground connection of first end of the first end of described the 3rd electric capacity and described the 4th resistance, the 19 end of described transponder chip is connected with the first end of described the 6th electric capacity and ground connection, the first end of described the 7th electric capacity is connected with the first end of described the 8th electric capacity and ground connection, the first end of described the 9th electric capacity is connected with the first end of described the tenth electric capacity and ground connection, the five terminal while of described transponder chip and the 7th end of described transponder chip, the 8th end of described transponder chip, the 9th end of described transponder chip and the tenth end of described transponder chip are connected and ground connection, the anodal while of described power supply and the second end of described the 7th electric capacity, the second end of described the 8th electric capacity, the tenth one end of described transponder chip, the 17 end of described transponder chip, the second end of described the 6th electric capacity, the second end of the first end of described the second resistance and described the second electric capacity is connected, the 20 end of described transponder chip is connected with the first end of described the first resistance, the second end of described the first resistance is connected with the first end of described the first inductance with the signal input output end of described antenna simultaneously, the second end of described the first inductance is connected with the first end of described the second inductance with the second end of described the first electric capacity simultaneously, the second end of described the second inductance is connected with the first end of described the 3rd resistance, the second end of described the 3rd inductance is connected with the first end of described the 5th electric capacity, the second end while of described the 5th electric capacity and the first end of described the 4th electric capacity, the second end of the first end of described the 3rd inductance and described transponder chip is connected, the second end while of described the 4th electric capacity and the second end of described the 3rd inductance, the first end of described transponder chip, the second end of described the second resistance is connected with the second end of described the 3rd electric capacity, the 3rd end of described transponder chip is connected with the second end of described the 4th resistance, the five terminal of described transponder chip is connected with the second end of described the tenth electric capacity with the first end of described crystal oscillator simultaneously, the second end while and the second end of described the 9th electric capacity and the six end connecting of described transponder chip of described crystal oscillator.
Further, described power supply is 5V direct supply.
The beneficial effects of the utility model are:
What the utility model adopted is the transponder chip of Manchester's cde mode, can allow multiple cards to read while write and can not clash, can mate with multiple electronic tag, can moment complete identification, utilize the central computer of CAN bus and automobile to communicate, can guarantee that communication is smooth, improve the antijamming capability of burglary-resisting system communication, there is good promotional value.
Accompanying drawing explanation
Fig. 1 is the utility model circuit theory diagrams.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail:
As shown in Figure 1, the utility model comprises power supply, transponder chip U, antenna ANT, the first capacitor C 1, the second capacitor C 2, the 3rd capacitor C 3, the 4th capacitor C 4, the 5th capacitor C 5, the 6th capacitor C 6, the 7th capacitor C 7, the 8th capacitor C 8, the 9th capacitor C 9, the tenth capacitor C 10, the first inductance L 1, the second inductance L 2, the 3rd inductance L 3, the first resistance R 1, the second resistance R 2, the 3rd resistance R 3, the 4th resistance R 4 and crystal oscillator X, power supply is 5V direct supply, the first end of the first capacitor C 1, the first end of the second capacitor C 2, the equal ground connection of first end of the first end of the 3rd capacitor C 3 and the 4th resistance R 4, the 19 end of transponder chip U is connected with the first end of the 6th capacitor C 6 and ground connection, the first end of the 7th capacitor C 7 is connected with the first end of the 8th capacitor C 8 and ground connection, the first end of the 9th capacitor C 9 is connected with the first end of the tenth capacitor C 10 and ground connection, the five terminal while of transponder chip U and the 7th end of transponder chip U, the 8th end of transponder chip U, the 9th end of transponder chip U and the tenth end of transponder chip U are connected and ground connection, the anodal while of power supply and the second end of the 7th capacitor C 7, the second end of the 8th capacitor C 8, the tenth one end of transponder chip U, the 17 end of transponder chip U, the second end of the 6th capacitor C 6, the first end of the second resistance R 2 is connected with the second end of the second capacitor C 2, the 20 end of transponder chip U is connected with the first end of the first resistance R 1, the second end of the first resistance R 1 is connected with the first end of the first inductance L 1 with the signal input output end of antenna ANT simultaneously, the second end of the first inductance L 1 is connected with the first end of the second inductance L 2 with the second end of the first capacitor C 1 simultaneously, the second end of the second inductance L 2 is connected with the first end of the 3rd resistance R 3, the second end of the 3rd inductance L 3 is connected with the first end of the 5th capacitor C 5, the second end while of the 5th capacitor C 5 and the first end of the 4th capacitor C 4, the second end of the first end of the 3rd inductance L 3 and transponder chip U is connected, the second end while of the 4th capacitor C 4 and the second end of the 3rd inductance L 3, the first end of transponder chip U, the second end of the second resistance R 2 is connected with the second end of the 3rd capacitor C 3, the 3rd end of transponder chip U is connected with the second end of the 4th resistance R 4, the five terminal of transponder chip U is connected with the second end of the tenth capacitor C 10 with the first end of crystal oscillator X simultaneously, the second end while and the second end of the 9th capacitor C 9 and the six end connecting of transponder chip U of crystal oscillator X.
The transponder chip U that the utility model is selected is read-write Multiprotocol Tansceiver chip S6700 family chip, itself and transponder tango AG-IT form radio system jointly, S6700 adopts 13.56MHz frequency of operation, and there is anti-collision mechanism, due to the employing of S6700 family chip is Manchester's cde mode, therefore can allow multiple cards to read while write and can not clash, typical case's transmitted power is 200mW, the agreement that it is supported comprises TITAG-IT agreement, ISO/IEC15693-2 agreement and ISO/IEC14443-2 agreement, S6700 series is synchronous serial interface (SPI) with the interface of CPU, the tenth five terminal of transponder chip U in Fig. 1, the 13 end of transponder chip U and the 12 end of transponder chip U are respectively clock line, Data In-Line, DOL Data Output Line, clock line is two-way, DOL Data Output Line is exported for data during receiving data, during sending data, be used to refer to the situation of the inner fifo register of transponder chip U, can moment complete identification, utilize the central computer of CAN bus and automobile to communicate, can guarantee that communication is smooth, improved the antijamming capability of burglary-resisting system communication.
Claims (2)
1. a RFID reader circuitry for automotive theft proof system, is characterized in that: comprise power supply, transponder chip, antenna, the first electric capacity, the second electric capacity, the 3rd electric capacity, the 4th electric capacity, the 5th electric capacity, the 6th electric capacity, the 7th electric capacity, the 8th electric capacity, the 9th electric capacity, the tenth electric capacity, the first inductance, the second inductance, the 3rd inductance, the first resistance, the second resistance, the 3rd resistance, the 4th resistance and crystal oscillator, the first end of described the first electric capacity, the first end of described the second electric capacity, the equal ground connection of first end of the first end of described the 3rd electric capacity and described the 4th resistance, the 19 end of described transponder chip is connected with the first end of described the 6th electric capacity and ground connection, the first end of described the 7th electric capacity is connected with the first end of described the 8th electric capacity and ground connection, the first end of described the 9th electric capacity is connected with the first end of described the tenth electric capacity and ground connection, the five terminal while of described transponder chip and the 7th end of described transponder chip, the 8th end of described transponder chip, the 9th end of described transponder chip and the tenth end of described transponder chip are connected and ground connection, the anodal while of described power supply and the second end of described the 7th electric capacity, the second end of described the 8th electric capacity, the tenth one end of described transponder chip, the 17 end of described transponder chip, the second end of described the 6th electric capacity, the second end of the first end of described the second resistance and described the second electric capacity is connected, the 20 end of described transponder chip is connected with the first end of described the first resistance, the second end of described the first resistance is connected with the first end of described the first inductance with the signal input output end of described antenna simultaneously, the second end of described the first inductance is connected with the first end of described the second inductance with the second end of described the first electric capacity simultaneously, the second end of described the second inductance is connected with the first end of described the 3rd resistance, the second end of described the 3rd inductance is connected with the first end of described the 5th electric capacity, the second end while of described the 5th electric capacity and the first end of described the 4th electric capacity, the second end of the first end of described the 3rd inductance and described transponder chip is connected, the second end while of described the 4th electric capacity and the second end of described the 3rd inductance, the first end of described transponder chip, the second end of described the second resistance is connected with the second end of described the 3rd electric capacity, the 3rd end of described transponder chip is connected with the second end of described the 4th resistance, the five terminal of described transponder chip is connected with the second end of described the tenth electric capacity with the first end of described crystal oscillator simultaneously, the second end while and the second end of described the 9th electric capacity and the six end connecting of described transponder chip of described crystal oscillator.
2. the RFID reader circuitry of automotive theft proof system according to claim 1, is characterized in that: described power supply is 5V direct supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320580956.4U CN203490705U (en) | 2013-09-18 | 2013-09-18 | RFID reader circuit of automobile anti-theft system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320580956.4U CN203490705U (en) | 2013-09-18 | 2013-09-18 | RFID reader circuit of automobile anti-theft system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203490705U true CN203490705U (en) | 2014-03-19 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320580956.4U Expired - Fee Related CN203490705U (en) | 2013-09-18 | 2013-09-18 | RFID reader circuit of automobile anti-theft system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203490705U (en) |
-
2013
- 2013-09-18 CN CN201320580956.4U patent/CN203490705U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140319 Termination date: 20140918 |
|
| EXPY | Termination of patent right or utility model |