CN209216130U - A kind of fish pass remote supervision system based on RFID card reader - Google Patents
A kind of fish pass remote supervision system based on RFID card reader Download PDFInfo
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- CN209216130U CN209216130U CN201920103013.XU CN201920103013U CN209216130U CN 209216130 U CN209216130 U CN 209216130U CN 201920103013 U CN201920103013 U CN 201920103013U CN 209216130 U CN209216130 U CN 209216130U
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Abstract
The utility model relates to the fish pass remote supervision systems based on RFID card reader, send the radiofrequency signal of 134.2Khz frequency by induction coil by RFID card reader, also generate magnetic field under induction coil electrical condition；The fish body of glass tube electronic tag is carried in vivo, and by generating induced current when induction coil, to obtain energy, glass tube electronic tag is activated, so that electronic tag sends itself encoded information by built-in antenna；RFID card reader receives the signal sent from label by induction coil, carries out signal operation amplification to received signal, and be sent to wireless data transmission terminal, is demodulated and decoded according to TCP/IP communications protocol.Wireless data transmission terminal stores data in real time, and simultaneously by GPRS network, and encoded information is sent in the form of short message to server；User passes through program game server, the data such as Receiving coded information, to realize that long-range monitoring objective fish individual passes through situation in fish pass.
Description
Technical field
The utility model relates to RFID technical field of RFID, and it is long-range to further relate to a kind of fish pass based on RFID card reader
Monitoring system.
Background technique
Behavior of the monitoring objective individual (fish) in fish pass, such as direction of movement pass through the time of specific section, Chang Cai
With video surveillance method, netting gear recapture method and acoustic monitoring method, but above-mentioned three kinds of methods have the disadvantage in that 1, net laws on arrests influences fish
The operation in road；2, video surveillance method can not play its effect in water turbidity；3, acoustic monitoring technique is immature, by ring
Border factor is affected.It needs knowing the behavior of (fish) in fish pass at present, such as direction of movement passes through specific section
Time while by data remote transmission, it is not necessary to Field Force is on duty, in order to can long term monitoring.
Utility model content
The technical purpose of the utility model is to provide a kind of fish pass remote supervision system based on RFID card reader, be used for
Fish pass cross fish recruitment evaluation monitoring, can be applied to aquatic biological monitoring under field river and streams environment, farm it is underwater
The monitoring at fish and herding station, the ox of farm, sheep, chicken and duck.
A kind of the technical solution of the utility model are as follows: fish pass remote supervision system based on RFID card reader, comprising:
Induction coil is at least made of transmitting coil and receiving coil, and induction coil generates magnetic field when being powered, and is mounted on
The glass tube electronic tag passed through in channel is set to obtain faradic direction；
RFID card reader has the transmitting antenna interface being electrically connected respectively with transmitting coil and receiving coil and receives day
The output node connection of line interface, transmitting antenna interface and power amplification circuit, receiving antenna interface and signal amplification circuit
Circuit occurs for input node connection, power amplification circuit input terminal rate of connections, and it is power that voltage conversion circuit plate, which connects battery,
Amplifying circuit and signal amplification circuit power supply；
Wireless data transmission terminal has the serial ports connecting with signal amplification circuit output end, also has connection GPRS mould
The single-chip microcontroller of block and storage card, for storing and to server transport from the received data of RFID card reader；
The glass tube electronic tag is the PIT radio frequency chip being enclosed in glass tube.
Further, the frequency generating circuit includes 14 binary system asynchronous counters for being electrically connected oscillator, this is different
The terminal count output of step counter is electrically connected to power amplification circuit input terminal by resistance R41.
Further, the wireless data transmission terminal includes the antenna being sequentially connected electrically, SIM card, GPRS module, monolithic
Machine, the GPRS module select SIM300, and data receiver pin RXD and data send pin TXD and the pin of single-chip microcontroller connects
It connects, the GPRS module is SIM card power supply, is also connected by output pin, and the single-chip microcontroller selects P87LPC764, input
Hold the output end of connection signal amplifying circuit.
Further, the power amplification circuit include transmitting tube Q2, transmitting tube Q3, electrolytic capacitor C20 and capacitor C14,
The collector of C9, C16, the transmitting tube Q2 are connect with external power supply VCC, the base stage of transmitting tube Q2 and transmitting tube Q3 jointly with penetrate
Take place frequently the input terminal connection of raw circuit, described in the emitter of the transmitting tube Q2 is connect jointly with the emitter of the transmitting tube Q3
Transmitting antenna interface ANT1, capacitor C9, C16 are in parallel, which is connected to the collector of the transmitting tube Q3, another
One end connects the receiving antenna interface ANT2, the grounded collector of transmitting tube Q3, one end of electrolytic capacitor C20 and capacitor C14
Ground connection, the other end are connected in parallel to transmitting tube Q2 collector.
Further, the signal amplification circuit includes amplifier U3A, amplifier U3B, and the output end of amplifier U3A connects
The in-phase end of amplifier U3B, the one end capacitor C5, C22 ground connection are connect, the other end is connected in parallel to the power pins of amplifier U3A, resistance R8
Cathode connection amplifier U3A reverse side, the cathode of resistance R8 also passes through resistance R7 and is grounded, the anode connection resistance of resistance R8
The cathode of R9, the anode connection power pins of resistance R9, cathode connect the reverse side of amplifier U3B, resistance R9 and electricity simultaneously
The conode of resistance R8 is connect with RC parallel circuit one end, RC parallel circuit other end ground connection；
Diode D3, diode D4, height have been sequentially arranged between transmitting antenna interface ANT2 and the in-phase end of amplifier U3A
Frequency filter circuit, DC filtering circuit, amplitude limiter circuit, diode D3 and diode D4 series connection, for taking out half-cycle signal, just
Pole connects transmitting antenna interface ANT2, the in-phase end that cathode passes through the capacitor C6 connection amplifier U3A of DC filtering circuit；Directly
Stream filter circuit is series RC circuit, and resistance R13 is in parallel with amplitude limiter circuit, which connects capacitor C6 and amplifier
Node between U3A in-phase end, the other end connect the collector of transmitting tube Q3, and amplitude limiter circuit includes the diode D5 of reverse parallel connection
With diode D6；High-frequency filter circuit is RC parallel circuit, and one end connects the total contact of diode D4 and capacitor C6, the other end
The collector for connecting transmitting tube Q3, for filtering out high frequency carrier.
The basic conception of the utility model is: sending the radio frequency of 134.2Khz frequency by induction coil by RFID card reader
Signal also generates magnetic field under induction coil electrical condition；The fish body for carrying glass tube electronic tag in vivo, when by induction coil
Induced current is generated, to obtain energy, glass tube electronic tag is activated, so that electronic tag passes through itself encoded information
Built-in antenna is sent；RFID card reader receives the signal sent from label by induction coil, to received signal
Signal amplification is carried out, and is sent to wireless data transmission terminal, is demodulated and decoded according to TCP/IP communications protocol.
Wireless data transmission terminal stores data in real time, and simultaneously by GPRS network, coding is sent in the form of short message
Information is to server；User passes through program game server, the data such as Receiving coded information, to realize long-range monitoring objective fish
Class individual passes through situation in fish pass.
The advantages of the utility model utility model, is: using the low frequency induction coil and electronic tag of 134.2kHz, fitting
Together in the monitoring of water body Mesichthyes individual；PIT radio frequency chip distance of reaction is remote, and induction coil diameter maximum is up to 90cm, generally
Reader identification range only 10cm, the fish which is suitable for fish pass environment monitor；The chip encoded using full duplex, core
Piece cost is far below half-duplex coding；It is loaded with wireless data transmission terminal GPRS-GTU, can remotely transfer data, it can be
The place of connection internet receives data, system also real-time storage monitoring data at the scene simultaneously.
Triode Q2 and Q3 drive amplification input signal gives antenna ANT1, and diode D3, D4 take out semiperiodic signal, R12,
C10 filters out high frequency carrier, and C6, R13 filter out direct current signal, and D5, D6 reverse parallel connection play the role of clipping, in this way by glass tube
Electronic tag issue itself encoded information demodulation and decoding when, prevent input signal excessive, cause operational amplifier self-locking and
Damage, U3A and U3B are hysteresis loop comparator, solve the anti-interference problem of digital signal output.After circuit filters out miscellaneous remaining signal, most
Output is loaded with the digital signal of fish coding eventually.
Detailed description of the invention:
Fig. 1 is the functional block diagram of the monitoring system of the utility model；
Fig. 2 is the circuit diagram of the RFID card reader of the monitoring system of the utility model；
Fig. 3 is that the schematic diagram of circuit occurs for the radio frequency of the monitoring system of the utility model；
Fig. 4 is the wireless data transmission terminal GPRS-GTU circuit diagram of the monitoring system of the utility model；
Fig. 5 is the wireless data transmission terminal GPRS-GTU schematic diagram of the monitoring system of the utility model.
Specific embodiment:
Such as Fig. 1, a kind of fish pass remote supervision system based on RFID card reader, main member: 1 piece of RFID card reader 1,1
A induction coil 2 (1m*2m, wide * long), 1 piece of wireless data transmission terminal 3 (band RAM card and SIM phonecard), 1 voltage turn
5,1 aluminum appliance boxes of circuit board 4 and 1 piece of reserve battery are changed, battery uses 12V lithium battery.
The working frequency 134.2k of induction coil 2, penetrability are strong；Receive the 2mm*12mm (diameter of glass tube electronic tag 7
And length) the distance of signal that sends of glass tube electronic tag 7 be 40cm or more, induction coil 2 is made of multiturn conducting wire；
Such as Fig. 2, RFID card reader 1 is supported FDX-B agreement, EMID card and its compatible RFID radio frequency chip, is met
ISO11784/85 international standard protocol；RFID card reader 1 has UART communication interface, and Transistor-Transistor Logic level exports, output end MCST,
It is easy to operate, baud rate 9600bps.System power source voltage is 12V or 220V.System supports multiple card reading modules nearby simultaneously
It uses, does not influence card reading.There is RFID card reader 1 transmitting antenna being electrically connected respectively with transmitting coil and receiving coil to connect
The output node 2 of mouth ANT1 and receiving antenna interface ANT2, transmitting antenna interface ANT1 and power amplification circuit connect, and receive day
Circuit, voltage occur for the connection of the input node 4 of line ANT2 and signal amplification circuit, 0 rate of connections of power amplification circuit input terminal
It is that power amplification circuit and signal amplification circuit are powered that conversion circuit plate 4, which connects battery 5,；
The power amplification circuit includes transmitting tube Q2, transmitting tube Q3, electrolytic capacitor C20 and capacitor C14, C9, C16, institute
The collector 3 for stating transmitting tube Q2 is connect with external power supply VCC, and with radio frequency electricity occurs for the base stage of transmitting tube Q2 and transmitting tube Q3 jointly
The input terminal CNT OUT connection on road, referring to Fig. 3, the emitter of the transmitting tube Q2 and the emitter of the transmitting tube Q3 are common
The transmitting antenna interface ANT1 is connected, capacitor C9, C16 are in parallel, which is connected to the collection of the transmitting tube Q3
Electrode, the other end 6 connect the receiving antenna interface ANT2, the grounded collector of transmitting tube Q3, electrolytic capacitor C20 and capacitor
One end of C14 is grounded, and the other end is connected in parallel to transmitting tube Q2 collector.The signal amplification circuit includes amplifier U3A, amplifier
The output end 9 of U3B, amplifier U3A connect the in-phase end 12 of amplifier U3B, the one end capacitor C5, C22 ground connection, and the other end is connected in parallel to
The power pins 10 of amplifier U3A, the reverse side 8 of the cathode connection amplifier U3A of resistance R8, the cathode of resistance R8 also pass through electricity
R7 ground connection is hindered, the anode of resistance R8 connects the cathode of resistance R9, the anode connection power pins of resistance R9, and cathode connects simultaneously
The conode and RC parallel circuit (being made of capacitor C4 and resistance R10) of the reverse side 13 of amplifier U3B, resistance R9 and resistance R8
One end connection, RC parallel circuit other end ground connection；Fig. 3 is analog circuit, and function is signal amplification, ASK demodulation.UA3 and U3B are
Hysteresis loop comparator (Schmidt trigger, hysteresis comparator) reduces output and vibrates between high low logic level, promotes number letter
Number output interference free performance.
Be sequentially arranged between transmitting antenna interface ANT2 and the in-phase end 7 of amplifier U3A diode D3, diode D4,
High-frequency filter circuit, DC filtering circuit, amplitude limiter circuit, diode D3 and diode D4 series connection, for taking out half-cycle signal,
Anode connection transmitting antenna interface ANT2, the in-phase end that cathode passes through the capacitor C6 connection amplifier U3A of DC filtering circuit
7；DC filtering circuit is series RC circuit, is made of capacitor C6 and resistance R13, resistance R13 is in parallel with amplitude limiter circuit, the parallel connection
Branch one end 17 connects the node between capacitor C6 and amplifier U3A in-phase end, and the other end 18 connects the collector of transmitting tube Q3,
Amplitude limiter circuit includes that diode D5 and the diode D6, D5, D6 of reverse parallel connection act on for clipping (pressure limiting), transports U3A LMV358
In-phase end (No. 7 pins) the voltage maximum for calculating amplifier does not exceed 0.7V；High-frequency filter circuit is RC parallel circuit, by resistance
R12 and capacitor C10 composition, one end 19 connect the total contact of diode D4 and capacitor C6, and the other end 20 connects transmitting tube Q3's
Collector, for filtering out high frequency carrier.
Such as Fig. 4, wireless data transmission terminal 3 can carry 128G storage card, real-time storage data.It is electric with amplifying with signal
The serial ports pin P0.2/CIN2A of road output end MCST connection also has the single-chip microcontroller of connection GPRS module and storage card
P87LPC764, for storing and transmitting to server 6 from the received data of RFID card reader 1；The wireless data transmission terminal
3 include antenna, SIM card, GPRS module, the single-chip microcontroller being sequentially connected electrically, and the GPRS module selects SIM300, data receiver
Pin RXD and data send pin TXD electric connection corresponding with the pin TXD and RXD of single-chip microcontroller respectively, the GPRS module
The VCC pin of VDD pin connection SIM card is powered for it, also passes through the corresponding pin of output pin I/O, CLK, RST and SIM card
It is connected, the single-chip microcontroller selects P87LPC764, the output end MCST of input terminal P0.2/CIN2A connection signal amplifying circuit.
The spare lithium battery 5 of system band, it is ensured that 1 circuit board of RFID card reader and wireless data transmission are whole under blackout condition
End 3 still can be normal use 5-8 hours.
Glass tube electronic tag 7 is the PIT label of the common implanted HDX or FDX-B format that purchase in the market, is at this
It is used in system as just consumptive material.
1 RFID card reader technical data sheet of table
| Working frequency | 134.2kHz | Supported protocol | ISO11784/5 |
| Read distance | ≥40cm | Label is compatible | HDX、FDX-B |
| Card reading chip | Soft decoding | Operating power | ≤4.5W |
| Reading speed | 100ms | The mode of connection | 2.54 contact pin type |
| Operating voltage | 3.5V-5.5V | Communication interface | UART |
| Baud rate | 115200bps | Specification | 40mm*80mm*15mm |
| Operating temperature | - 20 DEG C~+85 DEG C | Ambient humidity | 5%~95% |
Induction coil 2 connects the transmitting antenna interface ANT1 and receiving antenna interface of RFID card reader 1 by joint signal
ANT2, wireless data transmission terminal 3GPRS-DTU receive data, real-time storage by the RS232 communication interface of RFID card reader 1
Information is received and sent to server 6 by GPRS modem antenna after data, server 6 is provided clients with by port software again
Data.Communication between wireless data transmission terminal 3GPRS-DTU and server 6 is initiated by wireless data transmission terminal 3,
6 end of server responds SIM300 by sending back to feedback or receiving communication.SIM300 and 6 end of server collectively constitute
Application system based on GPRS and INTERNET network communication.Server 6, which can receive any wireless data transmission terminal 3, initiates
Communication request, and the moment detection link in communications status, thus realize real-time data acquisition, database service etc. apply.
Wireless data transmission terminal 3 needs to be obtained ahead of time the IP address and port numbers at 6 end of server, could initiate communication request.It has infused
The intracorporal glass tube radio frequency chip 7 of fish is mapped to close to induction coil 2.RFID card reader 1 is green light flashing, shows to receive coding
Signal.3 indicator light D8 of wireless data transmission terminal also flashes simultaneously, saves coding information data, and send.Computer end is empty
Quasi- serial ports remote software receives encoded information.
Claims (5)
1. a kind of fish pass remote supervision system based on RFID card reader characterized by comprising
Induction coil is at least made of transmitting coil and receiving coil, and induction coil generates magnetic field when being powered, and being mounted on makes to lead to
The glass tube electronic tag passed through in road obtains faradic direction；
There is RFID card reader the transmitting antenna interface and receiving antenna that are electrically connected respectively with transmitting coil and receiving coil to connect
Mouthful, the output node of transmitting antenna interface and power amplification circuit connects, the input of receiving antenna interface and signal amplification circuit
Circuit occurs for node connection, power amplification circuit input terminal rate of connections, and it is power amplification that voltage conversion circuit plate, which connects battery,
Circuit and signal amplification circuit power supply；
Wireless data transmission terminal has the serial ports that connect with signal amplification circuit output end, also have connection GPRS module with
The single-chip microcontroller of storage card, for storing and to server transport from the received data of RFID card reader；
The glass tube electronic tag is the PIT radio frequency chip being enclosed in glass tube.
2. monitoring system according to claim 1, which is characterized in that the frequency generating circuit includes electrical connection oscillator
14 binary system asynchronous counters, the terminal count output of the asynchronous counter is electrically connected to power amplification electricity by resistance R41
Road input terminal.
3. monitoring system according to claim 1, which is characterized in that the wireless data transmission terminal includes successively being electrically connected
Antenna, SIM card, GPRS module, the single-chip microcontroller connect, the GPRS module select SIM300, data receiver pin RXD and data
The pin for sending pin TXD and single-chip microcontroller connects, and the GPRS module is SIM card power supply, is also connected by output pin, described
Single-chip microcontroller selects P87LPC764, the output end of input terminal connection signal amplifying circuit.
4. monitoring system according to claim 1, which is characterized in that the power amplification circuit includes transmitting tube Q2, hair
Pipe Q3, electrolytic capacitor C20 and capacitor C14, C9, C16 are penetrated, the collector of the transmitting tube Q2 is connect with external power supply VCC, transmitting
The base stage of pipe Q2 and transmitting tube Q3 jointly with radio frequency occur circuit input terminal connect, the emitter of the transmitting tube Q2 with it is described
The emitter of transmitting tube Q3 connects the transmitting antenna interface ANT1 jointly, and capacitor C9, C16 are in parallel, which connects
It is connected to the collector of the transmitting tube Q3, the other end connects the receiving antenna interface ANT2, and the collector of transmitting tube Q3 connects
One end of ground, electrolytic capacitor C20 and capacitor C14 are grounded, and the other end is connected in parallel to transmitting tube Q2 collector.
5. monitoring system according to claim 1, which is characterized in that the signal amplification circuit includes amplifier U3A, puts
The in-phase end of the output end connection amplifier U3B of big device U3B, amplifier U3A, the one end capacitor C5, C22 ground connection, the other end are in parallel
To the power pins of amplifier U3A, the reverse side of the cathode connection amplifier U3A of resistance R8, the cathode of resistance R8 also passes through electricity
R7 ground connection is hindered, the anode of resistance R8 connects the cathode of resistance R9, the anode connection power pins of resistance R9, and cathode connects simultaneously
The reverse side of amplifier U3B, resistance R9 are connect with the conode of resistance R8 with RC parallel circuit one end, the RC parallel circuit other end
Ground connection；
Diode D3, diode D4, high frequency filter have been sequentially arranged between transmitting antenna interface ANT2 and the in-phase end of amplifier U3A
Wave circuit, DC filtering circuit, amplitude limiter circuit, diode D3 and diode D4 series connection, for taking out half-cycle signal, anode is even
Antennal interface ANT2, the in-phase end that cathode passes through the capacitor C6 connection amplifier U3A of DC filtering circuit are penetrated in sending and receiving；Direct current filter
Wave circuit is series RC circuit, and resistance R13 is in parallel with amplitude limiter circuit, which connects capacitor C6 and amplifier U3A
Node between in-phase end, the other end connect transmitting tube Q3 collector, amplitude limiter circuit include reverse parallel connection diode D5 and
Diode D6；High-frequency filter circuit is RC parallel circuit, and one end connects the total contact of diode D4 and capacitor C6, and the other end connects
The collector for meeting transmitting tube Q3, for filtering out high frequency carrier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920103013.XU CN209216130U (en) | 2019-01-22 | 2019-01-22 | A kind of fish pass remote supervision system based on RFID card reader |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920103013.XU CN209216130U (en) | 2019-01-22 | 2019-01-22 | A kind of fish pass remote supervision system based on RFID card reader |
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| Publication Number | Publication Date |
|---|---|
| CN209216130U true CN209216130U (en) | 2019-08-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920103013.XU Active CN209216130U (en) | 2019-01-22 | 2019-01-22 | A kind of fish pass remote supervision system based on RFID card reader |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110632551A (en) * | 2019-10-09 | 2019-12-31 | 哈尔滨理工大学 | LF-RFID array monitoring device and monitoring method thereof |
| CN114223583A (en) * | 2021-12-16 | 2022-03-25 | 水利部中国科学院水工程生态研究所 | Interactive test method and detection system for synchronously testing phototaxis and phototaxis of fish |
-
2019
- 2019-01-22 CN CN201920103013.XU patent/CN209216130U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110632551A (en) * | 2019-10-09 | 2019-12-31 | 哈尔滨理工大学 | LF-RFID array monitoring device and monitoring method thereof |
| CN114223583A (en) * | 2021-12-16 | 2022-03-25 | 水利部中国科学院水工程生态研究所 | Interactive test method and detection system for synchronously testing phototaxis and phototaxis of fish |
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