CN207321251U - It is a kind of to adapt in quick and high speed switch new network hunting device - Google Patents
It is a kind of to adapt in quick and high speed switch new network hunting device Download PDFInfo
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- CN207321251U CN207321251U CN201721046645.4U CN201721046645U CN207321251U CN 207321251 U CN207321251 U CN 207321251U CN 201721046645 U CN201721046645 U CN 201721046645U CN 207321251 U CN207321251 U CN 207321251U
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Abstract
Adapted to the utility model discloses a kind of in quick and high speed switch new network hunting device, including for the transmitter to target cable transmission FM signal and the receiver for receiving and amplifying the FM signal, the transmitter includes sequentially connected signal amplification module, signal shaping module and power amplifier module, in the signal shaping module, it is connected with power amplifier module for keeping the constant current source module of the voltage amplitude of output signal, the receiver includes the signal receiving module set gradually, for filtering the middle weekly selection frequency module of interference ripple, modulated signal is demodulated into the frequency discriminator module of audio signal and for amplified signal power and sends the power amplifier module of hunting prompt tone.The utility model can effectively filter the interference signal of range of audio signals by the way of modulation /demodulation, and possess very strong adaptability and stronger penetration power, can penetrate its shielded layer, so as to reach good searching shielding line function.
Description
Technical field
Network hunting engineering device technique field is the utility model is related to, more particularly to one kind is adapted in quick and exchange at a high speed
The new network hunting device of machine.
Background technology
At present, network hunting device is composed of transmitter, receiver two parts, its operation principle is：Transmitting
Device sends audio signal to target cable, and receiver receives and amplifies this audio signal, carried finally by speaker frequency sound
Show that user searches out target cable.
And existing network hunting device has the disadvantages that：1st, receiver poor anti jamming capability, when there is audio model in the external world
During the interference signal enclosed, receiver can receive interference, influence to use；2nd, transmitter power is big, and efficiency is low, when cable accesses at a high speed
During interchanger, the signal amplitude of transmitter output can be significantly dragged down, cause receiver to receive signal very well, influence to make
With；3rd, shielding netting wire can not be found；4th, unicity is strong, corresponding grid line, telephone wire etc. can only be tested, adaptability
Difference.
The content of the invention
The purpose of this utility model is that in view of the above-mentioned problems, provide a kind of adapt in quick and high speed switch
New network hunting device.
Used technical solution is the utility model to achieve the above object：
It is a kind of to adapt in quick and high speed switch new network hunting device, including for being sent to target cable
The transmitter of FM signal and the receiver for receiving and amplifying the FM signal, the transmitter include sequentially connected
Signal amplification module, signal shaping module and power amplifier module, connect on the signal shaping module, power amplifier module
The current source module for keeping the voltage amplitude of output signal constant is useful for, the signal that the receiver includes setting gradually receives
Module, the middle weekly selection frequency module for filtering interference ripple, the frequency discriminator module and use that modulated signal is demodulated into audio signal
In amplified signal power and send the power amplifier module of hunting prompt tone.
The signal amplification module includes signal amplification circuit, the signal amplification circuit include resistance R17, R20, R30 with
Field-effect tube Q3, the G poles of field-effect tube Q3 are connected with one end of the resistance R17, S poles and the electricity of field-effect tube Q3
R30 connections are hindered, the D poles of field-effect tube Q3 are connected with the resistance R20, and the other end of the resistance R17 is connected with generation tune
The central processing unit of frequency signal, the resistance R20 and the signal shaping wired in parallel；
The signal shaping module includes chip U4 and the RJ45 ports, the RJ11 ports that are connected with chip U4, the chip
U4 is by amplified FM signal shaping and is divided into five tunnels, and chip U4 includes power end, ground terminal and 12 data port,
The first via is coupled to first foot of RJ45 ports for the data output end C on chip U4 by capacitance C10, and the second tunnel is should
Data output end B on chip U4 is coupled to the 2nd foot of RJ45 ports by capacitance C4, and the 3rd tunnel is the number on chip U4
The 3rd foot of RJ45 ports is coupled to by capacitance C13 according to output terminal D, the 4th tunnel leads to for the data output end E on chip U4
Cross capacitance C12 and be coupled to the 6th foot of RJ45 ports, the 5th tunnel is by the data output end A on chip U4 by FM signal
Send to the power amplifier module.
The power amplifier module passes through capacitance C7, diode D6, D7, resistance R46, R47, triode Q5, Q4 composition tool
There is the power multiplication circuit of power amplification, the collector of triode Q5 is connected with the collector of triode Q4, described
The junction of two triodes is parallel with capacitance C17 and capacitance C11, passes through the capacitance C17 couplings after modulated signal amplifying power
The S4 mouths of the RJ11 are bonded to, are coupled to the shielding of described RJ45, RJ11 after modulated signal amplifying power by the capacitance C11
Layer.
The current source module includes the triode Q6 and R41 being connected in the base stage of triode Q6, the triode
15VPP is met on the collector of Q6, the emitter of the triode Q6 emitter with the triode Q5, the chip U4 respectively
Power end connects, which can remain 15VPP by voltage amplitude and to the signal shaping module, power amplification mould
Block provides voltage.
The signal receiving module includes PCB antenna J1, capacitance C28, C40, resistance R19, R33, R31 and for matching
Impedance simultaneously amplifies that the G of the field-effect tube U3, the field-effect tube U3 of electric current is extremely upper to be concatenated with the resistance R33, capacitance C28, this
The D poles of field-effect tube U3 are connected with one end of capacitance C40, the other end ground connection of capacitance C40, the S poles of field-effect tube U3
It is connected with one end of resistance R31, the other end ground connection of resistance R31, the S poles of field-effect tube U3 and middle all frequency-selecting moulds
RC filtering current-limiting circuits are connected between block, the resistance R33 is in parallel with the resistance R19.
The middle weekly selection frequency module includes being used to filter the interference ripple beyond modulated signal and to modulated signal amplification
Selective frequency amplifier circuit and for amplified signal and ensure distortionless stable quiescent point amplifying circuit, the frequency-selecting amplification
Circuit includes triode Q2, middle week T1, resistance R6, R3, and the emitter of the triode Q2 is connected with one end of resistance R3, should
The other end ground connection of resistance R3, the collector of triode Q2 are connected with resistance R6, and resistance R6 is in parallel with the middle week T1；
The stable quiescent point amplifying circuit is connected with week T1 in this, which includes
Be parallel with resistance R8, R42, R10, R11, R12, capacitance C7, C1 and field-effect tube U5, the middle week TI resistance R8, R42,
The G poles of capacitance C7, the field-effect tube U5 are connected with resistance R42, the S poles of field-effect tube U5 and described resistance R11, R12
Series connection, the capacitance C1 is in parallel with resistance R11, and the D poles of field-effect tube U5 are connected with the resistance R10.
The common collector being connected with each other is equipped between the stable quiescent point amplifying circuit and the frequency discriminator module to put
Big circuit and high-pass filter, the collector amplifying circuit altogether include resistance R1, R15 and triode Q3, triode Q3
Collector be connected with resistance R1, resistance R1 is in parallel with resistance R10, the emitter of triode Q3 and resistance R15
Connection, the high-pass filter are in parallel with resistance R15.
The frequency discriminator module includes being used for the demodulation of frequency discriminator circuit for demodulating audio signal, the demodulation of frequency discriminator circuit and institute
State high-pass filter connection.
The power amplifier module includes power amplification circuit, which includes chip U3, the power amplification circuit
On be connected with loudspeaker J3 for sending hunting prompt tone.
The beneficial effects of the utility model are：The utility model is believed audio by the way of modulation /demodulation, by transmitter
Number it is loaded on high-frequency carrier signal, then sends this modulated signal to target cable, receiver receives and demodulates audio letter
Number, then made a sound by loudspeaker, therefore can effectively filter out the interference signal of range of audio signals；The utility model
Transmitter does output stage using voltage follower, and the upper limit of 40mA is equipped with to output current, when external load is less than 40mA
Standard ethernet interchanger and fast ethernet switch when, the voltage amplitude that it exports signal remains unchanged, and when outer
Connect load for high speed Ethernet exchange machine more than 40mA when, transmitter, which can limit output current, does not allow it to exceed the upper limit, thus
Utility model possesses very strong adaptability, suitable for all exchanges within standard ethernet, Fast Ethernet, high speed Ethernet
Machine；The high-frequency carrier signal that transmitter is sent has stronger penetration power, can penetrate its shielded layer, and to the shielding of cable
Layer also sends signal so as to reach good searching shielding line function.
Below in conjunction with the accompanying drawings with embodiment, the utility model is further illustrated.
Brief description of the drawings
Fig. 1 is the functional block diagram of the utility model；
Fig. 2 is signal amplification module and the circuit diagram of signal shaping module in the utility model；
Fig. 3 is the circuit diagram of power amplifier module in the utility model；
Fig. 4 is the circuit diagram of current source module in the utility model；
Fig. 5 is the circuit diagram of receiver in the utility model；
Fig. 6 is the circuit diagram of power amplifier module in the utility model.
Embodiment
Embodiment：As shown in Figures 1 to 6, the utility model is adapted in quick and high speed switch new to be a kind of
Network hunting device, including for sending the transmitter of FM signal to target cable and for receiving and amplifying frequency modulation letter
Number receiver, the transmitter includes sequentially connected signal amplification module 1, signal shaping module 2 and power amplifier module
3, in being connected with the constant electricity of voltage amplitude for keeping output signal on the signal shaping module 2, power amplifier module 3
Source module 4 is flowed, the receiver includes the signal receiving module 5 set gradually, the middle weekly selection frequency module for filtering interference ripple
6th, modulated signal is demodulated into the frequency discriminator module 7 of audio signal and for amplified signal power and sends hunting prompt tone
Power amplifier module 8.
The signal amplification module 1 includes signal amplification circuit, the signal amplification circuit include resistance R17, R20, R30 with
Field-effect tube Q3, the G poles of field-effect tube Q3 are connected with one end of the resistance R17, S poles and the electricity of field-effect tube Q3
R30 connections are hindered, the D poles of field-effect tube Q3 are connected with the resistance R20, and the other end of the resistance R17 is connected with generation tune
The central processing unit of frequency signal, the resistance R20 are in parallel with the signal shaping module 2；
The signal shaping module 2 includes chip U4 and the RJ45 ports, the RJ11 ports that are connected with chip U4, the chip
U4 is by amplified FM signal shaping and is divided into five tunnels, and chip U4 includes power end, ground terminal and 12 data port,
The first via is coupled to first foot of RJ45 ports for the data output end C on chip U4 by capacitance C10, and the second tunnel is should
Data output end B on chip U4 is coupled to the 2nd foot of RJ45 ports by capacitance C4, and the 3rd tunnel is the number on chip U4
The 3rd foot of RJ45 ports is coupled to by capacitance C13 according to output terminal D, the 4th tunnel leads to for the data output end E on chip U4
Cross capacitance C12 and be coupled to the 6th foot of RJ45 ports, the 5th tunnel is by the data output end A on chip U4 by FM signal
Send to the power amplifier module 3.
The power amplifier module 3 passes through capacitance C7, diode D6, D7, resistance R46, R47, triode Q5, Q4 composition tool
There is the power multiplication circuit of power amplification, the collector of triode Q5 is connected with the collector of triode Q4, described
The junction of two triodes is parallel with capacitance C17 and capacitance C11, passes through the capacitance C17 couplings after modulated signal amplifying power
The S4 mouths of the RJ11 are bonded to, are coupled to the shielding of described RJ45, RJ11 after modulated signal amplifying power by the capacitance C11
Layer.
The current source module 4 includes the triode Q6 and R41 being connected in the base stage of triode Q6, the triode
15VPP is met on the collector of Q6, the emitter of the triode Q6 emitter with the triode Q5, the chip U4 respectively
Power end connects, which can remain 15VPP by voltage amplitude and to the signal shaping module 2, power amplification
Module 3 provides voltage.
The signal receiving module 5 include PCB antenna J1, capacitance C28, C40, resistance R19, R33, R31 and for
With impedance and amplify that the G of the field-effect tube U3, the field-effect tube U3 of electric current is extremely upper to be concatenated with the resistance R33, capacitance C28,
The D poles of field-effect tube U3 are connected with one end of capacitance C40, the other end ground connection of capacitance C40, the S of field-effect tube U3
Pole is connected with one end of resistance R31, the other end ground connection of resistance R31, the S poles of field-effect tube U3 and middle all frequency-selectings
RC filtering current-limiting circuits are connected between module 6, the resistance R33 is in parallel with the resistance R19, which has
There is the advantages of high sensitivity, low noise.
The middle weekly selection frequency module 6 includes being used to filter the interference ripple beyond modulated signal and to modulated signal amplification
Selective frequency amplifier circuit and for amplified signal and ensure distortionless stable quiescent point amplifying circuit, the frequency-selecting amplification
Circuit includes triode Q2, middle week T1, resistance R6, R3, and the emitter of the triode Q2 is connected with one end of resistance R3, should
The other end ground connection of resistance R3, the collector of triode Q2 are connected with resistance R6, and resistance R6 is in parallel with the middle week T1,
Weekly selection frequency module 6 can filter the interference ripple beyond 455KHz carrier signals in this, so as to improve antijamming capability.
The stable quiescent point amplifying circuit is connected with week T1 in this, which includes
Be parallel with resistance R8, R42, R10, R11, R12, capacitance C7, C1 and field-effect tube U5, the middle week TI resistance R8, R42,
The G poles of capacitance C7, the field-effect tube U5 are connected with resistance R42, the S poles of field-effect tube U5 and described resistance R11, R12
Series connection, the capacitance C1 is in parallel with resistance R11, and the D poles of field-effect tube U5 are connected with the resistance R10.
The common collector being connected with each other is equipped between the stable quiescent point amplifying circuit and the frequency discriminator module 7 to put
Big circuit and high-pass filter, the collector amplifying circuit altogether include resistance R1, R15 and triode Q3, triode Q3
Collector be connected with resistance R1, resistance R1 is in parallel with resistance R10, the emitter of triode Q3 and resistance R15
Connection, the high-pass filter are in parallel with resistance R15.
The frequency discriminator module 7 includes being used for demodulating the demodulation of frequency discriminator circuit of audio signal, the demodulation of frequency discriminator circuit with
The high-pass filter connection.
The power amplifier module 8 includes power amplification circuit, which includes chip U3, the power amplification circuit
On be connected with loudspeaker J3 for sending hunting prompt tone.
Audio signal is loaded on high-frequency carrier signal by the utility model by the way of modulation /demodulation, by transmitter,
Then this modulated signal being sent to target cable, receiver receives and demodulates audio signal, then is made a sound by loudspeaker,
Therefore the interference signal of range of audio signals can effectively be filtered out.
The transmitter of the utility model does output stage using voltage follower, and the upper limit of 40mA is equipped with to output current,
When external load is standard ethernet interchanger and fast ethernet switch less than 40mA, it exports the voltage of signal
Amplitude remains unchanged, and when external load is the high speed Ethernet exchange machine more than 40mA, transmitter can limit output current not
It is allowed to exceed the upper limit, therefore the utility model possesses very strong adaptability, suitable for standard ethernet, Fast Ethernet, high speed
All interchangers within Ethernet；The high-frequency carrier signal that transmitter is sent has stronger penetration power, can penetrate its screen
Layer is covered, and signal is also sent so as to reach good searching shielding line function to the shielded layer of cable.
The above descriptions are merely preferred embodiments of the present invention, and not the utility model is made in any form
Limitation.Any those skilled in the art, it is all available in the case where not departing from technical solutions of the utility model ambit
The methods and technical content of the disclosure above makes technical solutions of the utility model many possible changes and modifications, or is revised as
The equivalent embodiment of equivalent variations.Therefore every content without departing from technical solutions of the utility model, the shape according to the utility model
The equivalence changes that shape, construction and principle are made, should all be covered by the scope of protection of the utility model.
Claims (10)
1. a kind of adapt in quick and high speed switch new network hunting device, including is adjusted for being sent to target cable
The transmitter of frequency signal and the receiver for receiving and amplifying the FM signal, it is characterised in that：The transmitter includes
Sequentially connected signal amplification module, signal shaping module and power amplifier module, in the signal shaping module, power amplification
It is connected with module for keeping the constant current source module of the voltage amplitude of output signal, the receiver includes setting gradually
Signal receiving module, the middle weekly selection frequency module for filtering interference ripple, the frequency discriminator that modulated signal is demodulated into audio signal
Module and for amplified signal power and send the power amplifier module of hunting prompt tone.
2. according to claim 1 adapt to exist in quick and high speed switch new network hunting device, its feature
In the signal amplification module includes signal amplification circuit, which includes resistance R17, R20, R30 and field-effect
Pipe Q3, the G poles of field-effect tube Q3 are connected with one end of the resistance R17, the S poles of field-effect tube Q3 and the resistance R30
Connection, the D poles of field-effect tube Q3 are connected with the resistance R20, and the other end of the resistance R17 is connected with generation FM signal
Central processing unit, the resistance R20 and the signal shaping wired in parallel.
3. according to claim 2 adapt to exist in quick and high speed switch new network hunting device, its feature
In the signal shaping module, which will include chip U4 and the RJ45 ports, the RJ11 ports that are connected with chip U4, chip U4, to put
FM signal shaping after big is simultaneously divided into five tunnels, and chip U4 includes power end, ground terminal and 12 data port, the first via
First foot of RJ45 ports is coupled to by capacitance C10 for the data output end C on chip U4, the second tunnel is chip U4
On data output end B the 2nd foot of RJ45 ports is coupled to by capacitance C4, the 3rd tunnel is the data output on chip U4
End D is coupled to the 3rd foot of RJ45 ports by capacitance C13, and the 4th tunnel passes through capacitance for the data output end E on chip U4
C12 is coupled to the 6th foot of RJ45 ports, the 5th tunnel be by FM signal by the data output end A on chip U4 send to
The power amplifier module.
4. according to claim 3 adapt to exist in quick and high speed switch new network hunting device, its feature
In the power amplifier module has power by capacitance C7, diode D6, D7, resistance R46, R47, triode Q5, Q4 composition
The power multiplication circuit of amplification, the collector of triode Q5 are connected with the collector of triode Q4, and described two three
The junction of pole pipe is parallel with capacitance C17 and capacitance C11, and institute is coupled to by the capacitance C17 after modulated signal amplifying power
The S4 mouths of RJ11 are stated, are coupled to the shielded layer of described RJ45, RJ11 after modulated signal amplifying power by the capacitance C11.
5. according to claim 4 adapt to exist in quick and high speed switch new network hunting device, its feature
In the current source module includes the triode Q6 and R41 being connected in the base stage of triode Q6, the collection of triode Q6
15VPP is met on electrode, the emitter of the triode Q6 emitter with the triode Q5, the power end of the chip U4 respectively
Voltage amplitude can be remained 15VPP and be provided to the signal shaping module, power amplifier module by connection, the current source module
Voltage.
6. according to claim 1 adapt to exist in quick and high speed switch new network hunting device, its feature
Include PCB antenna J1, capacitance C28, C40, resistance R19, R33, R31 and for matching impedance in, the signal receiving module
And the G for amplifying the field-effect tube U3, the field-effect tube U3 of electric current is extremely above concatenated with the resistance R33, capacitance C28, this effect
Should the D poles of pipe U3 be connected with one end of capacitance C40, the other end ground connection of capacitance C40, the S poles of field-effect tube U3 with should
One end connection of resistance R31, the other end ground connection of resistance R31, the S poles of field-effect tube U3 and the middle weekly selection frequency module it
Between be connected with RC filtering current-limiting circuits, the resistance R33 is in parallel with the resistance R19.
7. according to claim 1 adapt to exist in quick and high speed switch new network hunting device, its feature
In the middle weekly selection frequency module includes being used to filter the interference ripple beyond modulated signal and the frequency-selecting of modulated signal amplification is put
Big circuit and for amplified signal and ensure distortionless stable quiescent point amplifying circuit, the selective frequency amplifier circuit bag
Triode Q2, middle week T1, resistance R6, R3 are included, the emitter of the triode Q2 is connected with one end of resistance R3, resistance R3
Other end ground connection, the collector of triode Q2 is connected with resistance R6, and resistance R6 is in parallel with the middle week T1；
The stable quiescent point amplifying circuit is connected with week T1 in this, which includes resistance
Resistance R8, R42, capacitance are parallel with R8, R42, R10, R11, R12, capacitance C7, C1 and field-effect tube U5, the middle week TI
The G poles of C7, the field-effect tube U5 are connected with resistance R42, and the S poles of field-effect tube U5 are connected with described resistance R11, R12,
The capacitance C1 is in parallel with resistance R11, and the D poles of field-effect tube U5 are connected with the resistance R10.
8. according to claim 7 adapt to exist in quick and high speed switch new network hunting device, its feature
In equipped with the common collector amplifying circuit being connected with each other between the stable quiescent point amplifying circuit and the frequency discriminator module
And high-pass filter, the collector amplifying circuit altogether include resistance R1, R15 and triode Q3, the current collection of triode Q3
Pole is connected with resistance R1, and resistance R1 is in parallel with resistance R10, and the emitter of triode Q3 is connected with resistance R15, institute
It is in parallel with resistance R15 to state high-pass filter.
9. according to claim 8 adapt to exist in quick and high speed switch new network hunting device, its feature
In the frequency discriminator module includes being used for the demodulation of frequency discriminator circuit for demodulating audio signal, the demodulation of frequency discriminator circuit and the height
Bandpass filter connects.
10. according to claim 9 adapt to exist in quick and high speed switch new network hunting device, its feature
In the power amplifier module includes power amplification circuit, which includes chip U3, connected on the power amplification circuit
It is useful for sending the loudspeaker J3 of hunting prompt tone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721046645.4U CN207321251U (en) | 2017-08-21 | 2017-08-21 | It is a kind of to adapt in quick and high speed switch new network hunting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721046645.4U CN207321251U (en) | 2017-08-21 | 2017-08-21 | It is a kind of to adapt in quick and high speed switch new network hunting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207321251U true CN207321251U (en) | 2018-05-04 |
Family
ID=62432807
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721046645.4U Active CN207321251U (en) | 2017-08-21 | 2017-08-21 | It is a kind of to adapt in quick and high speed switch new network hunting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207321251U (en) |
-
2017
- 2017-08-21 CN CN201721046645.4U patent/CN207321251U/en active Active
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Address after: 523808 No. 6 industrial North Road, Songshan Lake high tech Industrial Development Zone, Dongguan, Guangdong Patentee after: Uno Technology (China) Limited by Share Ltd Address before: 523808 No. 6 industrial North Road, Songshan Lake high tech Industrial Development Zone, Dongguan, Guangdong Patentee before: Uni-Trend Technology (China) Co., Ltd. |