CN202694378U - Fish identifying reader-writer - Google Patents
Fish identifying reader-writer Download PDFInfo
- Publication number
- CN202694378U CN202694378U CN 201220358921 CN201220358921U CN202694378U CN 202694378 U CN202694378 U CN 202694378U CN 201220358921 CN201220358921 CN 201220358921 CN 201220358921 U CN201220358921 U CN 201220358921U CN 202694378 U CN202694378 U CN 202694378U
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- circuit
- read write
- fish
- write line
- modulation
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Abstract
The utility model provides a fish identifying reader-writer. The fish identifying reader-writer (1) comprises a modulation circuit (11), a transmitting and receiving circuit (12), a demodulation circuit (13) and an antenna (20), wherein the transmitting and receiving circuit (12) communicates with the antenna (20); and the output end of the modulation circuit (11) and the input end of the demodulation circuit (13) are electrically connected to the transmitting and receiving circuit (12) respectively. The fish identifying reader-writer is characterized in that the transmitting and receiving circuit (12) is detachably connected with the modulation circuit (11) and/or the modulation circuit (11). By the fish identifying reader-writer, transmitting power and receiving power of the transmitting and receiving circuit (12) can be independently allocated, so that read-write distance can be increased when a high-power device is used.
Description
Technical field
The utility model relates to radio-frequency (RF) identification (RFID) field, more specifically, relates to a kind of fish identification read write line.
Background technology
The RFID technology all is widely used in a lot of fields at present as a kind of contactless automatic identification technology.This technology is automatically identified destination object and is obtained related data by radiofrequency signal, and its identification work need not manual intervention, and discrimination is high, and speed is fast.
Existing rfid system is comprised of three parts substantially: radio-frequency (RF) tag, reader and antenna.Radio-frequency (RF) tag is called again electronic tag, formed by coupling element and chip, each label has unique electronic code, and this label is attached to and is used for the sign destination object on the object, and label can be divided into passive label (or passive label) and active tag (or active label).Existing a kind of reader can also be used for to the label writing information, has the function that reads and write concurrently, and read write line therefore is otherwise known as.Antenna is used for transmitting radiofrequency signal between label and reader.The ultimate principle of this rfid system is: after radio-frequency (RF) tag enters magnetic field, passive label receives the radiofrequency signal that reader sends, the energy that relies on the electric current of induction to obtain sends out the product information in the chip that is stored in label, and active tag is initiatively sent the signal of certain frequency.Then reader receives the signal that label sends, and information is wherein read in decoding, and the information that reads is sent in other data handling systems with data processing to be correlated with.
RFID uses that occupied frequency range or frequency are in the field of business a generally acknowledged division, can be divided into low-frequency range (30kHz-300kHz by the frequency height, typical frequency of operation has 125kHz, 133kHz), medium-high frequency section (3MHz-30MHz, typical frequency of operation has 13.56MHz), ultrahigh frequency and microwave (more than the 30MHz, typically frequency of operation has 433MHz, 902-928MHz, 2.45GHz, 5.8GHz).For the label that can wirelessly write, generally, write apart from being less than and read distance, its reason is to write the larger energy of requirement.The integrated circuit (IC) chip of existing low frequency rfid interrogator general using special use designs, and wherein each integrated components and parts all can not be changed.But the general power of power component integrated in this class chip is less, mostly be below 1 watt, so signal transmission power is less, so can bring the deficiencies such as signal energy is low, speed is slow, reading/writing distance is short, the general reading/writing distance of existing read write line is about about 10cm.And, because signal energy is lower, just can receive a return signal so sometimes send several signals, read the rate of writing and also therefore be affected.
The utility model content
The utility model in the existing fish identification read write line existing utilize the dedicated IC chip design cause reading distance little, a kind of fish identification read write line that adopts discrete device is provided, this fish identification read write line can send high, the high-power signal of energy, and reading/writing distance is larger.
To achieve these goals, the utility model provides a kind of fish identification read write line, this fish identification read write line comprises modulation circuit, transceiver circuit, demodulator circuit and antenna, described transceiver circuit and described antenna communication, the output terminal of described modulation circuit, the input end of demodulator circuit all are electrically connected to described transceiver circuit, between described transceiver circuit and the described modulation circuit and/or with described demodulator circuit between be connected removably.
Preferably, described transceiver circuit comprises transmitter and receiver, the output terminal of described transmitter and the input end of described receiver respectively with described antenna communication, the input end of described transmitter is electrically connected to the output terminal of described modulation circuit, the output terminal of described receiver is electrically connected to the input end of described demodulator circuit, is connected removably between described transmitter and the described modulation circuit and/or between described receiver and the described demodulator circuit.
Preferably, the power of described transmitter and receiver is 1 watt-10 watts.
Preferably, the frequency of operation of described transmitter and receiver is 134.4KHZ.
Preferably, described fish identification read write line also comprises carrier generation circuit and modulation signal generative circuit, and the output terminal of this carrier generation circuit and modulation signal generative circuit is connected respectively to the input end of described modulation circuit.
Preferably, described carrier generation circuit is connected with described modulation circuit with the modulation signal generative circuit and is connected removably.
Fish identification read write line of the prior art adopts integrated circuit (IC) chip, can not carry out separate configurations to each integration section in the chip, and the utility model is by making at least transceiver circuit discrete (preferably make form components and parts all discrete), and be connected removably with other ingredients of this fish identification read write line, namely not integrated with other ingredient, thus can carry out separate configurations to emission, the received power of transceiver circuit.For example can adopt high power device, thereby so that the fish that the utility model provides identification read write line can send high, the high-power signal of energy, so reading/writing distance is far away.When to adopt power be device more than 1 watt, reading/writing distance can reach more than the 30cm, be existing more than three times of read write line of fish identification, and because response is more easily received in the raising of signal energy.The components and parts that form in a preferred embodiment this fish identification read write line all be each other removably, non-integrated connection.
Description of drawings
Fig. 1 identifies the composition frame chart of the rfid system of read write line for the fish that provide according to the utility model are provided;
Fig. 2 is the composition frame chart according to the fish identification read write line of preferred implementation of the present utility model.
Embodiment
Below in conjunction with accompanying drawing the utility model is further detailed.
As shown in Figure 1, 2, the fish identification read write line 1 that the utility model provides comprises modulation circuit 11, transceiver circuit 12, demodulator circuit 13 and antenna 20, described transceiver circuit 12 is communicated by letter with described antenna 20, the input end of the output terminal of described modulation circuit 11, demodulator circuit 13 all is electrically connected to described transceiver circuit 12, between described transceiver circuit 12 and the described modulation circuit 11 and/or with described demodulator circuit 13 between be connected removably.
Consist of communication link between described transmitter 121 and receiver 122 and the antenna 20, consist of the communication link of twireless radio-frequency communication between antenna 20 and the radio-frequency (RF) tag 30, thus fish identification read write line 1 can by these communication links in the radio-frequency (RF) tag 30 writing information or from radio-frequency (RF) tag 30 reading information.Wherein antenna 20 is flat plane antenna, non-blind area in read range.
" connecting removably " of mentioning in the utility model can not refer to integrated circuit (IC) chip with other ingredient integrated combinations, to be different from integrated circuit (IC) chip of the prior art, the utility model can be built circuit according to the principle of work of read write line, and it is not integrated mutually between each element, thereby the components and parts in the read write line can be chosen removably, can select the components and parts better, more powerful than integrated circuit (IC) chip performance.
Specifically, can be connected removably between described transmitter 121 in the described fish identification read write line 1 and the described modulation circuit 11 and/or between receiver 122 and the demodulator circuit 13, the components and parts in these circuit also can be connected in separately the circuit removably.
The modulation circuit 11 that the utility model uses can adopt frequency shift keying (FSK) and two kinds of modulation systems of amplitude shift keying (ASK), to strengthen antijamming capability; And modulation amplitude also can be adjusted, to adapt to various label.
Described fish identification read write line 1 can also comprise carrier generation circuit 14 and the modulation signal generative circuit 15 that places in the plane formula shell 10, and the output terminal of this carrier generation circuit 14 and modulation signal generative circuit 15 is connected respectively to the input end of described modulation circuit 11.Described carrier generation circuit 14 is connected with the modulation signal generative circuit and is connected removably with described modulation circuit 11.With introduce above similar, the components and parts in described carrier generation circuit 14 and the modulation signal generative circuit 15 also can be connected in separately the circuit removably.Described carrier generation circuit 14 can comprise oscillatory circuit and frequency dividing circuit, by those skilled in the art are supplied to know.Modulation signal generative circuit 15 can be by software control, with the information of determining to write.
In the situation of above-mentioned non-integrated embodiment, can carry out separate configurations to the parameter (such as power) of transceiver circuit 12 (being transmitter 121 and receiver 122).For example, can choose power greater than 1 watt transmitter 121 and receiver 122, preferred power bracket is between 1 watt to 10 watts.General when to adopt power be device more than 1 watt, reading/writing distance can reach more than the 30cm, is existing more than three times of read write line of fish identification.
Since the utility model for be fish identification read write line, so the scope of the frequency of operation of described transmitter 121 and receiver 122 is 125Khz-134.4KHz, be typically 134.4KHz.
Each circuit in the fish identification read write line 1 that the utility model provides all is not particularly limited, and can adopt the known various circuit that can realize its function of those skilled in the art.
In addition, fish that the utility model provides identification read write line 1 can also comprise various adjunct circuits, such as amplifying circuit, filtering circuit etc., and can send this fish identification read write line 1 and the information received is carried out Code And Decode etc. by software.Can also comprise various interface, cable interface for example, being connected by netting twine with computing machine, etc.This all is the known technology that generally adopt this area, does not repeat them here.
Claims (6)
1. fish identify read write line, these fish identification read write lines (1) comprise modulation circuit (11), transceiver circuit (12), demodulator circuit (13) and antenna (20), described transceiver circuit (12) is communicated by letter with described antenna (20), the output terminal of described modulation circuit (11), the input end of demodulator circuit (13) all is electrically connected to described transceiver circuit (12), it is characterized in that, between described transceiver circuit (12) and the described modulation circuit (11) and/or with described demodulator circuit (13) between be connected removably.
2. fish according to claim 1 identify read write line, it is characterized in that, described transceiver circuit (12) comprises transmitter (121) and receiver (122), the input end of the output terminal of described transmitter (121) and described receiver (122) is communicated by letter with described antenna (20) respectively, the input end of described transmitter (121) is electrically connected to the output terminal of described modulation circuit (11), the output terminal of described receiver (122) is electrically connected to the input end of described demodulator circuit (13), is connected removably between described transmitter (121) and the described modulation circuit (11) and/or between described receiver (122) and the described demodulator circuit (13).
3. fish identification read write line according to claim 2 is characterized in that, the power of described transmitter (121) and receiver (122) is 1 watt-10 watts.
4. fish identification read write line according to claim 2 is characterized in that, the frequency of operation of described transmitter (121) and receiver (122) is 134.4KHZ.
5. fish according to claim 1 identify read write line, it is characterized in that, described fish identification read write lines (1) also comprise carrier generation circuit (14) and modulation signal generative circuit (15), and the output terminal of this carrier generation circuit (14) and modulation signal generative circuit (15) is connected respectively to the input end of described modulation circuit (11).
6. fish identification read write line according to claim 5 is characterized in that, described carrier generation circuit (14) is connected 15 with the modulation signal generative circuit) be connected removably with described modulation circuit (11) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220358921 CN202694378U (en) | 2012-07-24 | 2012-07-24 | Fish identifying reader-writer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220358921 CN202694378U (en) | 2012-07-24 | 2012-07-24 | Fish identifying reader-writer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202694378U true CN202694378U (en) | 2013-01-23 |
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ID=47549961
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220358921 Expired - Fee Related CN202694378U (en) | 2012-07-24 | 2012-07-24 | Fish identifying reader-writer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202694378U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107506819A (en) * | 2017-07-25 | 2017-12-22 | 浙江海洋大学 | The processing equipment of electric ray wireless identification tag |
| CN107609625A (en) * | 2017-07-25 | 2018-01-19 | 浙江海洋大学 | The processing unit of clown fish wireless identification tag |
| CN107688846A (en) * | 2017-07-25 | 2018-02-13 | 浙江海洋大学 | Wireless identification tag processor |
-
2012
- 2012-07-24 CN CN 201220358921 patent/CN202694378U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107506819A (en) * | 2017-07-25 | 2017-12-22 | 浙江海洋大学 | The processing equipment of electric ray wireless identification tag |
| CN107609625A (en) * | 2017-07-25 | 2018-01-19 | 浙江海洋大学 | The processing unit of clown fish wireless identification tag |
| CN107688846A (en) * | 2017-07-25 | 2018-02-13 | 浙江海洋大学 | Wireless identification tag processor |
| CN107609625B (en) * | 2017-07-25 | 2020-06-30 | 浙江海洋大学 | Processing apparatus of clown fish wireless tag |
| CN107688846B (en) * | 2017-07-25 | 2020-07-14 | 浙江海洋大学 | Wireless tag processor |
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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: 20130123 Termination date: 20140724 |
|
| EXPY | Termination of patent right or utility model |