CN203179031U - Active radio frequency identification system - Google Patents
Active radio frequency identification system Download PDFInfo
- Publication number
- CN203179031U CN203179031U CN 201320181045 CN201320181045U CN203179031U CN 203179031 U CN203179031 U CN 203179031U CN 201320181045 CN201320181045 CN 201320181045 CN 201320181045 U CN201320181045 U CN 201320181045U CN 203179031 U CN203179031 U CN 203179031U
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- reader
- radio frequency
- signal port
- singlechip
- frequency module
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Abstract
The utility model discloses an active radio frequency identification system, which comprises a reader and an electronic label. The reader comprises a first power supply, a first radio frequency module and a reader antenna. The electronic label comprises an electronic label antenna and a second radio frequency module. The reader comprises a first singlechip. The electronic label also comprises a second power supply and a second singlechip. The signal port of the first singlechip is connected with the signal port of the first radio frequency module. The output terminal of the second power supply is connected with the power supply interface of the second singlechip. The signal port of the second singlechip is connected with the signal port of the second radio frequency module. By employing the active electronic label, the active radio frequency identification system has advantages of long-distance working and low energy consumption and is worth of being generalized.
Description
Technical field
The utility model relates to a kind of radio-frequency recognition system, relates in particular to a kind of active radio frequency recognition system.
Background technology
Radio-frequency (RF) identification is to utilize radio frequency band to realize that the noncontact two-way communication identifies a kind of automatic identification technology with swap data, radio-frequency card is called electronic tag again, can be divided into active and two kinds of passive types according to the working method of electronic tag, the active rfid system is because its information is real-time, data capacity is big, read or write speed is fast to be applicable to fields such as personnel and item tracking positioning system with advantages such as reading distance, past is because factor such as active electric subtab volume and power consumption are big and battery life is limited, seriously limited the application of active rfid system and universal.
The utility model content
The purpose of this utility model provides a kind of a kind of active radio frequency recognition system simple in structure, easy to use and low in energy consumption with regard to being in order to address the above problem.
In order to achieve the above object, the utility model has adopted following technical scheme:
A kind of active radio frequency recognition system, comprise reader and electronic tag, described reader comprises first power supply, first radio-frequency module and reader antenna, described electronic tag comprises electronic label antenna and second radio-frequency module, described reader also comprises first single-chip microcomputer, described electronic tag also comprises second source and second singlechip, the signal port of described first single-chip microcomputer is connected with the signal port of described first radio-frequency module, the power output end of described second source is connected with the power interface of described second singlechip, and the signal port of described single-chip microcomputer is connected with the signal port of described second radio-frequency module.
Particularly, described reader also comprises level translator and RS485 interface, and described level translator is connected with described first single-chip microcomputer.
Particularly, described first power supply adopts the 3.3V stabilized voltage supply, and described second source adopts the 3V button cell.
The beneficial effects of the utility model are:
A kind of active radio frequency recognition system of the utility model adopts active formula system, and electronic tag initiatively sends data to reader with self electric energy, the serviceability height, and operating distance is farther.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing:
As shown in Figure 1, a kind of active radio frequency recognition system, comprise reader and electronic tag, reader comprises first power supply, first radio-frequency module and reader antenna, electronic tag comprises electronic label antenna and second radio-frequency module, reader also comprises first single-chip microcomputer, electronic tag also comprises second source and second singlechip, the signal port of first single-chip microcomputer is connected with the signal port of first radio-frequency module, the power output end of second source is connected with the power interface of second singlechip, and the signal port of single-chip microcomputer is connected with the signal port of second radio-frequency module.
Reader also comprises level translator and RS485 interface, and level translator is connected with first single-chip microcomputer.
First power supply adopts the 3.3V stabilized voltage supply, and second source adopts the 3V button cell.
Use the principle of work of a kind of active radio frequency recognition system of the utility model as follows:
Native system is divided into reader and electronic tag comes two parts, radio-frequency module adopts the NRF24L01 radio-frequency module in the native system, first single-chip microcomputer of reader adopts low-voltage, little power consumption and high-performance COMS16 position single-chip microcomputer MSP430F123, the second singlechip of electronic tag adopts ultra low-power microcontroller MSP430F2101, this single-chip microcomputer can adopt the C language development, include the EPROM of Random Access Data memory RAM and 2000 bytes of 256 bytes, the program that drives and control NRF24L01 is write this flash memory, need not external EPROM and simplified circuit design and reduced system power dissipation, the built-in WatchDog Timer of first single-chip microcomputer and second singlechip, can effectively avoid program fleet, the system anti-interference of making strengthens greatly.
When the first radio-frequency module NRF24L01 powers on, finish initialization operation, receive the pattern of selecting to enter emission or receiving data after the order of control system.Electronic tag started the 500ms timer before this after finishing initialization, enter emission mode, then second singlechip sends the label coding data of storage in advance, send whether just detect timer after the data immediately overtime, if do not have overtimely, continue to wait for so, if time is up, just enter the next transmission cycle, electronic tag is outwards launched data once every 500ms like this.Transmission interval can suitably increase according to the actual requirements or reduce or carry out according to certain algorithm, in order to realize some specific demand.Reader just enters receiving mode after finishing initialization, the wait wireless data arrives, come then if any data at first whether judgment data is legal, then send first single-chip microcomputer to handle as legal data, first single-chip microcomputer receives that the coding of adding self reader behind the legal label data that radio frequency chip sends here delivers to 485 interfaces.
Claims (3)
1. active radio frequency recognition system, comprise reader and electronic tag, described reader comprises first power supply, first radio-frequency module and reader antenna, described electronic tag comprises electronic label antenna and second radio-frequency module, it is characterized in that: described reader also comprises first single-chip microcomputer, described electronic tag also comprises second source and second singlechip, the signal port of described first single-chip microcomputer is connected with the signal port of described first radio-frequency module, the power output end of described second source is connected with the power interface of described second singlechip, and the signal port of described single-chip microcomputer is connected with the signal port of described second radio-frequency module.
2. a kind of active radio frequency recognition system according to claim 1, it is characterized in that: described reader also comprises level translator and RS485 interface, described level translator is connected with described first single-chip microcomputer.
3. a kind of active radio frequency recognition system according to claim 1 is characterized in that: described first power supply employing 3.3V stabilized voltage supply, described second source employing 3V button cell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320181045 CN203179031U (en) | 2013-04-11 | 2013-04-11 | Active radio frequency identification system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320181045 CN203179031U (en) | 2013-04-11 | 2013-04-11 | Active radio frequency identification system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203179031U true CN203179031U (en) | 2013-09-04 |
Family
ID=49075700
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320181045 Expired - Fee Related CN203179031U (en) | 2013-04-11 | 2013-04-11 | Active radio frequency identification system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203179031U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105499143A (en) * | 2016-01-05 | 2016-04-20 | 中山市卓梅尼控制技术有限公司 | Material sorting system |
-
2013
- 2013-04-11 CN CN 201320181045 patent/CN203179031U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105499143A (en) * | 2016-01-05 | 2016-04-20 | 中山市卓梅尼控制技术有限公司 | Material sorting system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130904 Termination date: 20140411 |