CN203133875U - Contactless radio frequency decoding card reading circuit - Google Patents
Contactless radio frequency decoding card reading circuit Download PDFInfo
- Publication number
- CN203133875U CN203133875U CN 201320064389 CN201320064389U CN203133875U CN 203133875 U CN203133875 U CN 203133875U CN 201320064389 CN201320064389 CN 201320064389 CN 201320064389 U CN201320064389 U CN 201320064389U CN 203133875 U CN203133875 U CN 203133875U
- Authority
- CN
- China
- Prior art keywords
- chip
- radio frequency
- frequency decoding
- decoding card
- card reader
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Landscapes
- Microcomputers (AREA)
Abstract
The utility model discloses a contactless radio frequency decoding card reading circuit, comprising a one-chip microcomputer, a USB chip, a radio frequency chip, a liquid crystal LCD and a memory, wherein the USB chip, the radio frequency chip, the liquid crystal LCD and the memory are respectively connected with the one-chip microcomputer. The contactless radio frequency decoding card reading circuit provided by the utility model compensates for a variety of defects of a conventional card reader, has the advantages of stable working, strong anti-interference capability, high cost performance and flexible operation and can be used in a wide range of fields.
Description
Technical field
The utility model relates to a kind of card reader, specially refers to a kind of contactless radio frequency decoding Card Reader circuit.
Background technology
Radio RF recognition technology (RFID) is popularized fast and is promoted with characteristics such as its high safety confidentiality, communication high speed, ease of use, cost are low, now be widely used in aspects such as all kinds of access control systems, public transport payment system, medical insurance system, managing system of car parking, warehousing management, vehicle anti-theft, and driven read write line and types of applications Products Development and popularization.
The utility model content
In view of this, the purpose of this utility model provides a kind of contactless radio frequency decoding Card Reader circuit, has remedied the many disadvantages of conventional card reader, and working stability, antijamming capability is strong, cost performance is high, flexible operation, has application very widely.
To achieve these goals, the utility model is by the following technical solutions:
A kind of contactless radio frequency decoding Card Reader circuit wherein, comprises single-chip microcomputer, USB chip, radio frequency chip, liquid crystal LCD and storer; Described USB chip, radio frequency chip, liquid crystal LCD and storer are connected single-chip microcomputer respectively.
As preferably, described single-chip microcomputer adopts the STC11F32 chip.
As preferably, described radio frequency chip adopts the MFRC500 chip.
As preferably, described USB chip adopts the CH340T chip.
As preferably, also comprise interface circuit, described interface circuit is connected with single-chip microcomputer.
The beneficial effects of the utility model are:
The utility model adopts the STC11F32 chip, and inner integrated highly reliable reset circuit can be used on occasions such as high-speed communication, Based Intelligent Control, strong jamming.The MFRC500 chip is supported all layers of ISO14443A, and inner transmitter part does not need to increase active circuit just can directly drive near operation distance antenna (distance can reach 10cm); Have multiplely with the interface mode of microcontroller, both can adopt the bus extended mode, also can adopt the emulation bus mode.LCD can show various figures and Chinese character; Serial storage is used for storing dot matrix word library, shape library etc.; The USB chip makes this card reader save serial ports and power supply side mouth, can communicate by letter with the PC management software by USB interface, also can communicate by letter with peripherals by interface circuit.
Other advantages of the present utility model, target and feature will be set forth to a certain extent in the following description, and to a certain extent, based on being apparent to those skilled in the art to investigating hereinafter, perhaps can from practice of the present utility model, obtain instruction.Target of the present utility model and other advantages can realize and obtain by specifically noted structure in following instructions or the accompanying drawing.
Description of drawings
Fig. 1 is structured flowchart of the present utility model;
Fig. 2 is the circuit connection diagram of the utility model STC11F32 single-chip microcomputer;
Fig. 3 is the circuit connection diagram of the utility model USB chip;
Fig. 4 is the schematic diagram of the utility model radio frequency chip.
Embodiment
Below by specific embodiment, and by reference to the accompanying drawings, preferred embodiment of the present utility model is described in detail.
As shown in Figure 1, the utility model comprises single-chip microcomputer, USB chip, interface circuit, radio frequency chip, liquid crystal LCD and storer; USB chip, interface circuit, radio frequency chip, liquid crystal LCD and storer are connected single-chip microcomputer respectively.Single-chip microcomputer adopts the STC11F32 chip, and radio frequency chip adopts the MFRC500 chip, and the USB chip adopts the CH340T chip.
As shown in Figure 2, STC11F32 is the single-chip microcomputer of a kind of single clock/machine cycle (1T), is high speed, low-power consumption, has a new generation's 8051 single-chip microcomputers of superpower antijamming capability, the compatible fully tradition 8051 of instruction code, but fast 8～12 times of speed.Inner integrated highly reliable reset circuit can be used on occasions such as high-speed communication, Based Intelligent Control, strong jamming; There are the EEPROM of Flash, 29KB of 32KB and the SRAM of 1280 bytes in inside; EA, ALE, PSEN and RST pin can be defined as general purpose I/O, i.e. 4 P4 pins; The ISP download function is supported in programming.In order to use the expansion SRAM of the inner 1KB of STC11F32, adopt the emulation bus interface mode, namely link to each other with the P0 mouth of single-chip microcomputer and D0～D7 of MFRC500, link to each other with NCS, ALE, NWR, the NRD etc. of MFRC500 respectively as control line with EA, ALE, WR, RD etc.Owing to be the emulation bus mode, so will adding, the P0 mouth of single-chip microcomputer draws resistance.
As shown in Figure 3, the MFRC500 chip is supported all layers of ISO14443A, and inner transmitter part does not need to increase active circuit just can directly drive near operation distance antenna (distance can reach 10cm); Have multiplely with the interface mode of microcontroller, both can adopt the bus extended mode, also can adopt the emulation bus mode.
As shown in Figure 4, the USB chip adopts the CH340T chip, can realize that USB changes serial ports, is used to computing machine expansion asynchronous serial port, perhaps common serial equipment directly is upgraded to usb bus.CH340T is full speed USB device interface, compatible USB V2.0, and peripheral component only needs devices such as crystal and electric capacity; Hardware full duplex serial ports, built-in transmitting-receiving buffer zone is supported communication baud rate 50bps～2Mbps; Support Modem cue RTS, DTR, DCD, RI, DSR etc. commonly used.CH340T makes this card reader save serial ports and power supply side mouth, can communicate by letter with the PC management software by this USB interface.
LCD can show various figures and Chinese character; Serial storage is used for storing dot matrix word library, shape library etc.; The USB chip makes this card reader save serial ports and power supply side mouth, can communicate by letter with the PC management software by USB interface, also can communicate by letter with peripherals by interface circuit.
Explanation is at last, above embodiment is only unrestricted in order to the technical solution of the utility model to be described, other modifications that those of ordinary skills make the technical solution of the utility model or be equal to replacement, only otherwise break away from the spirit and scope of technical solutions of the utility model, all should be encompassed in the middle of the claim scope of the present utility model.
Claims (5)
1. a contactless radio frequency decoding Card Reader circuit is characterized in that: comprise single-chip microcomputer, USB chip, radio frequency chip, liquid crystal LCD and storer; Described USB chip, radio frequency chip, liquid crystal LCD and storer are connected single-chip microcomputer respectively.
2. a kind of contactless radio frequency decoding Card Reader circuit according to claim 1 is characterized in that: described single-chip microcomputer employing STC11F32 chip.
3. a kind of contactless radio frequency decoding Card Reader circuit according to claim 1 and 2 is characterized in that: described radio frequency chip employing MFRC500 chip.
4. a kind of contactless radio frequency decoding Card Reader circuit according to claim 1 and 2 is characterized in that: described USB chip employing CH340T chip.
5. a kind of contactless radio frequency decoding Card Reader circuit according to claim 1 and 2, it is characterized in that: also comprise interface circuit, described interface circuit is connected with single-chip microcomputer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320064389 CN203133875U (en) | 2013-02-04 | 2013-02-04 | Contactless radio frequency decoding card reading circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320064389 CN203133875U (en) | 2013-02-04 | 2013-02-04 | Contactless radio frequency decoding card reading circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203133875U true CN203133875U (en) | 2013-08-14 |
Family
ID=48941832
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320064389 Expired - Lifetime CN203133875U (en) | 2013-02-04 | 2013-02-04 | Contactless radio frequency decoding card reading circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203133875U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107305618A (en) * | 2016-04-18 | 2017-10-31 | 湖南百里目科技有限责任公司 | A kind of Contactless IC Card Reader design |
-
2013
- 2013-02-04 CN CN 201320064389 patent/CN203133875U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107305618A (en) * | 2016-04-18 | 2017-10-31 | 湖南百里目科技有限责任公司 | A kind of Contactless IC Card Reader design |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10209911B2 (en) | Techniques enabling low power states for a communications port | |
| CN201828921U (en) | Integrated dual-frequency card reader | |
| CN102402704B (en) | Compound multifunctional IC card reader-writer | |
| CN201828938U (en) | Baseband signal processing (system-on-chip)SOC chip of multi-protocol (ultrahigh frequency radio frequency identification) UHF RFID reader | |
| CN203133875U (en) | Contactless radio frequency decoding card reading circuit | |
| CN201698443U (en) | Usb radio frequency card reader | |
| CN203054881U (en) | Radio-frequency card reader writer based on single-chip microcomputer | |
| CN103456103B (en) | Theme park coin inspection palmtop computer system | |
| CN207148829U (en) | A kind of embedded-type ARM core board based on SDIO interfaces | |
| CN202929443U (en) | Hand-held CAN bus data analytical equipment | |
| CN202205217U (en) | Portable RFID reader for enterprise product tracing | |
| CN202373005U (en) | Compound multifunctional integrated circuit (IC) card reader-writer | |
| CN203276315U (en) | Double-interface IC card reading/writing device | |
| CN202041960U (en) | RFID (Radio Frequency Identification Device) handheld device with function of short-distance wireless communication | |
| CN202171816U (en) | Card reading module for CPU card | |
| CN201004226Y (en) | Minimum system module of ARM processor with FLASH and SDRAM | |
| CN203552281U (en) | Compatible IC card reader-writer | |
| CN205845211U (en) | A kind of multi-functional public transport card fills shifting money POS | |
| CN203276311U (en) | Card reading module for CPU card | |
| CN2906750Y (en) | IC card reader/writer with USB interface | |
| CN203659022U (en) | Second generation resident identity card bluetooth reader based on IOS platform | |
| CN202976150U (en) | Interface-expandable smart card reader-writer | |
| CN203415003U (en) | Campus card attendance system | |
| CN203133899U (en) | Universal IC card reader-writer with high-speed USB interface | |
| CN203433660U (en) | Portable wireless meter reading system of USB (universal serial bus) interface based on CH371 |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130814 |
|
| CX01 | Expiry of patent term |