CN209562520U - A kind of signal interference preventer of household monitor - Google Patents
A kind of signal interference preventer of household monitor Download PDFInfo
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- CN209562520U CN209562520U CN201920541525.4U CN201920541525U CN209562520U CN 209562520 U CN209562520 U CN 209562520U CN 201920541525 U CN201920541525 U CN 201920541525U CN 209562520 U CN209562520 U CN 209562520U
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Abstract
The utility model discloses a kind of signal interference preventer of household monitor, it is unstable to solve the problems, such as that the controlling terminal of existing household monitor receives signal frequency.Its signal frequency Acquisition Circuit selects the received frequency data signal of controlling terminal of the signal frequency collector J1 acquisition household monitor of model SJ-ADC；Its frequency-selective switch circuit selects transport and placing device AR1 and resistance R3~R5 and capacitor C3, C4 to form phase-shift circuit adjustment signal pulse width, then divide two-way to Signal Regulation, signal amplitude is adjusted with triode Q4, Q3 and transport and placing device AR2 all the way, another way filters out single-frequency signals with resistance R9~R11 and capacitor C4~C6 composition frequency selection circuit；Filtering output circuit exports after filtering with inductance L1 and capacitor C7, C8 composition π type filter circuit.The frequency data signal of signal transmission passage input terminal in the controlling terminal of its real-time monitoring household monitor, to signal frequency modulation and pressure stabilizing, anti-stop signal decaying.
Description
Technical field
The utility model relates to field of communication technology, especially a kind of signal interference preventer of household monitor.
Background technique
Universal with network with the improvement of people ' s living standards, security protection becomes more and more popular.It is especially close several
Year development of information technology and the improvement of people's living environment, current family's monitor is mainly based on video monitoring, technology
Above with the seamless compatible and provided remote real-time video processing capacity of IP network and other network applications, monitor household
Device is popular on the market.But in fact, household monitor controlling terminal receive signal acquisition module data-signal,
Data-signal is often interfered by other family's inner electronic equipment high-frequency signals in transmission process, causes signal frequency unstable
And signal is decayed, the data-signal for causing the controlling terminal of household monitor to receive exceeds error range, seriously affects household
The using effect of monitor is unstable for the controlling terminal reception signal frequency for overcoming the shortcomings of existing household monitor, this reality
With the novel signal interference preventer for being designed to provide a kind of reasonable, reliable operation the household monitor of design.The household
The signal interference preventer of monitor being capable of signal transmission passage input terminal in the controlling terminal of real-time monitoring household monitor
Frequency data signal, to signal frequency modulation and pressure stabilizing, anti-stop signal decaying.
Utility model content
The technical scheme adopted by the utility model to solve the technical problem is as follows: a kind of signal of household monitor is anti-tampering
Device comprising signal frequency Acquisition Circuit, frequency-selective switch circuit and filtering output circuit, it is characterised in that: the signal frequency
Rate Acquisition Circuit selects the received number of controlling terminal of the signal frequency collector J1 acquisition household monitor of model SJ-ADC
According to signal frequency, which is the signal of signal transmission passage input terminal in the controlling terminal of household monitor, with two
The clamp circuit of pole pipe D2, diode D3 composition is by signal clamper in 0~+5V；The frequency-selective switch circuit selects transport and placing device
AR1 and resistance R3~resistance R5 and capacitor C3, capacitor C4 form phase-shift circuit adjustment signal pulse width, then divide two-way pair
Signal is adjusted respectively, wherein adjusting all the way with triode Q4, triode Q3 and transport and placing device AR2 to signal amplitude, another road transport
Single-frequency signals, last two paths of signals are filtered out with resistance R9~resistance R11 and capacitor C4~capacitor C6 composition frequency selection circuit
Together in input filter output circuit, filtering output circuit is with inductance L1 and capacitor C7, capacitor C8 composition π type filter circuit filter
It is exported after wave, that is to say the received data-signal current potential of controlling terminal of compensation household monitor；
The frequency-selective switch circuit includes transport and placing device AR1, one end of the homophase input termination capacitor C2 of transport and placing device AR1 and electricity
Hinder one end of R4, the other end ground connection of capacitor C2, one end of the anti-phase input terminating resistor R3 of transport and placing device AR1, resistance R5, resistance
The anode of another terminating diode D4 of R3 and the other end of resistance R4, the other end of the output terminating resistor R5 of transport and placing device AR1
With one end of resistance R9, capacitor C4, one end of another termination capacitor C5 of capacitor C4, resistance R10, another termination electricity of resistance R9
Hinder one end of R11, capacitor C6, the other end ground connection of resistance R10, capacitor C6, the other end of another termination capacitor C5 of resistance R11
With the output end of transport and placing device AR2, the cathode of diode D4 connects one end of capacitor C3 and the non-inverting input terminal of transport and placing device AR2, three poles
The collector of pipe Q3, another terminating resistor R6, one end of resistance R7 and the base stage of triode Q4 of capacitor C3, resistance R7's is another
End ground connection, the grounded collector of triode Q4, the other end of the emitter connecting resistance R6 of triode Q4 and the base stage of triode Q3,
The inverting input terminal of the emitter connecting resistance R8 of triode Q3, transport and placing device AR2, the other end ground connection of resistance R8.
Preferably, the filtering output circuit includes resistance R12, and the one of resistance R12 terminates the output end of transport and placing device AR2,
One end of another termination inductance L1 of resistance R12 and one end of capacitor C7, the other end ground connection of capacitor C7, the other end of inductance L1
Connect one end of capacitor C8, resistance R13, the other end ground connection of capacitor C8, another termination signal output port of resistance R13.
Preferably, the signal frequency Acquisition Circuit includes the signal frequency collector J1 of model SJ-ADC, signal frequency
Power supply termination capacitor C1, one end of resistance R1 and the cathode of power supply+5V and diode D2 of rate collector J1, signal frequency are adopted
The ground terminal of storage J1 is grounded, the output termination capacitor C1 of signal frequency collector J1, the other end of resistance R1 and resistance R2
The anode and diode D4 of the cathode of one end, the cathode of another termination voltage-stabiliser tube D1 of resistance R2 and diode D3, diode D2
Anode, the plus earth of voltage-stabiliser tube D1, the plus earth of diode D3.
The utility model has the following advantages that compared with prior art；
1, transport and placing device AR1 and resistance R3~resistance R5 and capacitor C3, capacitor C4 is selected to form phase-shift circuit adjustment signal
Pulse width passes through adjustment signal pulse width, it is ensured that signal guarantees that signal is constant, then divides in subsequent adjustment signal
Two-way adjusts signal respectively, adjusts all the way with triode Q4, triode Q3 and transport and placing device AR2 to signal amplitude, another way
Single-frequency signals are filtered out with resistance R9~resistance R11 and capacitor C4~capacitor C6 composition frequency selection circuit, single-frequency
Signal is relatively stable, and can filter abnormal frequency signal, and last two paths of signals in input filter output circuit, guarantees together
The consistency of signal realizes the frequency modulation calibration to signal using aforesaid way；
2, with exporting after inductance L1 and capacitor C7, capacitor C8 composition π type filter circuit filtering, it that is to say compensation household prison
The received data-signal current potential of controlling terminal for controlling device, by acquiring frequency data signal, and after frequency data signal is calibrated
It is converted into the thermal compensation signal of data-signal, the anti-stop signal decaying by way of thermal compensation signal, design is reasonable, reliable operation
Property.
Detailed description of the invention
The utility model is described in further detail with reference to the accompanying drawings and examples.
Fig. 1 is a kind of system module figure of the utility model；
Fig. 2 is a kind of circuit diagram of the utility model.
Marked in the figure: 1. signal frequency Acquisition Circuits, 2. frequency-selective switch circuits, 3. filtering output circuits.
Specific embodiment
Aforementioned and other technology contents, feature and effect in relation to the utility model, in following cooperation with reference to figures 1 through attached
Fig. 2 can be clearly presented in the detailed description of embodiment.The structure content being previously mentioned in following embodiment is to say
Bright book attached drawing is reference.
Embodiment one
In Fig. 1, Fig. 2, a kind of signal interference preventer of household monitor, including signal frequency Acquisition Circuit 1, frequency-selecting
Switching circuit 2 and filtering output circuit 3, the signal frequency Acquisition Circuit 1 select the signal frequency acquisition of model SJ-ADC
Device J1 acquires the received frequency data signal of controlling terminal of household monitor, which is that the control of household monitor is whole
The signal of signal transmission passage input terminal in holding, with the clamp circuit of diode D2, diode D3 composition by signal clamper 0
In~+5V；The frequency-selective switch circuit 2 selects transport and placing device AR1 and resistance R3~resistance R5 and capacitor C3, capacitor C4 composition to move
Circuitry phase adjustment signal pulse width, then divides two-way to adjust signal respectively, wherein using triode Q4, triode Q3 all the way
Signal amplitude is adjusted with transport and placing device AR2, another way is with resistance R9~resistance R11 and capacitor C4~capacitor C6 composition frequency-selecting electricity
Road filters out single-frequency signals, and last two paths of signals is together in input filter output circuit 3, and filtering output circuit 3 is with electricity
It is exported after sense L1 and capacitor C7, capacitor C8 composition π type filter circuit filtering, that is to say that the controlling terminal of compensation household monitor connects
The data-signal current potential of receipts.
In Fig. 2, the frequency-selective switch circuit 2 includes transport and placing device AR1, and the homophase input of transport and placing device AR1 terminates capacitor C2
One end and resistance R4 one end, capacitor C2 the other end ground connection, anti-phase input terminating resistor R3, the resistance R5 of transport and placing device AR1
One end, another terminating diode D4 of resistance R3 anode and resistance R4 the other end, the output terminating resistor of transport and placing device AR1
The other end of R5 and one end of resistance R9, capacitor C4, one end of another termination capacitor C5 of capacitor C4, resistance R10, resistance R9's
One end of another terminating resistor R11, capacitor C6, the other end ground connection of resistance R10, capacitor C6, another termination capacitor of resistance R11
The other end of C5 and the output end of transport and placing device AR2, the cathode of diode D4 connect the same mutually defeated of one end of capacitor C3 and transport and placing device AR2
Enter the collector at end, triode Q3, another terminating resistor R6, one end of resistance R7 and the base stage of triode Q4 of capacitor C3, electricity
Hinder the other end ground connection of R7, the grounded collector of triode Q4, the other end of the emitter connecting resistance R6 of triode Q4 and three poles
The base stage of pipe Q3, the inverting input terminal of the emitter connecting resistance R8 of triode Q3, transport and placing device AR2, the other end ground connection of resistance R8.
The frequency-selective switch circuit 2 of the present embodiment selects transport and placing device AR1 and resistance R3~resistance R5 and capacitor C3, capacitor C4
Phase-shift circuit adjustment signal pulse width is formed, passes through adjustment signal pulse width, it is ensured that signal is in subsequent adjustment signal
When keep signal it is constant, then divide two-way to adjust signal respectively, wherein all the way use triode Q4, triode Q3 and transport and placing device
AR2 adjusts signal amplitude, and triode Q4 releases signal amplitude is too low to greatly, and triode Q3 is excessively high by signal amplitude
Signal is fed back in transport and placing device AR2 inverting input terminal, reduces transport and placing device AR2 output amplitude, that is to say triode Q3 for height
Level conducting, triode Q4 are low level conducting, and wherein transport and placing device AR2 is amplification transport and placing device, the conduction loss of thermal compensation signal；Separately
Single-frequency signals, single frequency are filtered out with resistance R9~resistance R11 and capacitor C4~capacitor C6 composition frequency selection circuit all the way
The signal of rate is relatively stable, and can filter abnormal frequency signal, and last two paths of signals is together in input filter output circuit,
It ensure that the consistency of signal.The frequency-selective switch circuit 2 that the present embodiment uses realizes the frequency modulation calibration to signal.
Embodiment two
In Fig. 2, on the basis of example 1, the filtering output circuit 3 of the present embodiment includes resistance R12, resistance R12
A termination transport and placing device AR2 output end, one end of another termination inductance L1 of resistance R12 and one end of capacitor C7, capacitor C7
Other end ground connection, one end of another termination capacitor C8 of inductance L1, resistance R13, the other end ground connection of capacitor C8, resistance R13
Another termination signal output port.
After the filtering output circuit 3 of the present embodiment is with inductance L1 and capacitor C7, capacitor C8 composition π type filter circuit filtering
Output that is to say the received data-signal current potential of controlling terminal in compensation household monitor, by acquiring frequency data signal, and
The thermal compensation signal of data-signal is converted into after frequency data signal is calibrated, the anti-stop signal decaying by way of thermal compensation signal.
Embodiment three
In Fig. 2, on the basis of example 1, the signal frequency Acquisition Circuit 1 of the present embodiment includes model SJ-
The power supply termination capacitor C1 of the signal frequency collector J1 of ADC, signal frequency collector J1, one end of resistance R1 and power supply+5V
And the cathode of diode D2, the ground terminal ground connection of signal frequency collector J1, the output of signal frequency collector J1 terminate electricity
Hold C1, the other end of resistance R1 and one end of resistance R2, the cathode of another termination voltage-stabiliser tube D1 of resistance R2 and diode D3's
The anode of cathode, the anode of diode D2 and diode D4, the plus earth of voltage-stabiliser tube D1, the plus earth of diode D3.
The signal frequency Acquisition Circuit 1 of the present embodiment selects the signal frequency collector J1 of model SJ-ADC, signal frequency
Rate collector J1 acquires the received frequency data signal of controlling terminal in household monitor, with diode D2, diode D3 group
At clamp circuit by signal clamper in 0-+5V, prevent signal potential from crossing havoc circuit, while voltage-stabiliser tube D1 pressure stabilizing.
When the utility model is used, the video signal collection module of its signal frequency Acquisition Circuit 1 and household monitor
It is connected, the video signal collection module output vision signal in household monitor is direct by signal transmission passage in the prior art
It is sent in the controlling terminal of household monitor, and this circuit is set between video signal collection module and controlling terminal, household
The controlling terminal of monitor that is to say the MCU single-chip microcontroller of household monitor, therefore filters 3 output end of output circuit and passed by signal
The MCU single-chip microcontroller of defeated channel connection household monitor.The signal frequency Acquisition Circuit 1 of the utility model selects model SJ-ADC
Signal frequency collector J1 acquisition household monitor the received frequency data signal of controlling terminal, the data-signal be household
The signal of signal transmission passage input terminal in the controlling terminal of monitor, with the clamper electricity of diode D2, diode D3 composition
Road is by signal clamper in 0~+5V；Its frequency-selective switch circuit 2 selects transport and placing device AR1 and resistance R3~resistance R5 and capacitor
C3, capacitor C4 form phase-shift circuit adjustment signal pulse width, pass through adjustment signal pulse width, it is ensured that signal is subsequent
It keeps signal constant when adjustment signal, two-way is then divided to adjust signal respectively, wherein using triode Q4, triode Q3 all the way
Signal amplitude is adjusted with transport and placing device AR2, triode Q4 releases signal amplitude is too low to greatly, and triode Q3 shakes signal
Excessively high signal is fed back in transport and placing device AR2 inverting input terminal, is reduced transport and placing device AR2 output amplitude, be that is to say three poles
Pipe Q3 is high level conducting, and triode Q4 is low level conducting, and wherein transport and placing device AR2 is amplification transport and placing device, and thermal compensation signal is led
Logical loss；Another way filters out single-frequency letter with resistance R9~resistance R11 and capacitor C4~capacitor C6 composition frequency selection circuit
Number, the signal of single-frequency is relatively stable, and can filter abnormal frequency signal, and input filter is defeated together for last two paths of signals
Out in circuit, the consistency of signal ensure that, the frequency-selective switch circuit 2 of use realizes the frequency modulation calibration to signal, filters defeated
Circuit 3 that is to say compensation household monitoring with exporting after inductance L1 and capacitor C7, capacitor C8 composition π type filter circuit filtering out
The received data-signal current potential of controlling terminal in device.
The above is to combine specific embodiment further detailed description of the utility model, and it cannot be said that originally
Utility model specific implementation is limited only to this；Belonging to the utility model and for those skilled in the technology concerned, In
Under the premise of technical solutions of the utility model thinking, made expansion and the replacement of operating method, data should all be fallen in
Within scope of protection of the utility model.
Claims (3)
1. a kind of signal interference preventer of household monitor comprising signal frequency Acquisition Circuit, frequency-selective switch circuit and filter
Wave output circuit, it is characterised in that: the signal frequency Acquisition Circuit selects the signal frequency collector J1 of model SJ-ADC
The received frequency data signal of controlling terminal of household monitor is acquired, which is in the controlling terminal of household monitor
The signal of signal transmission passage input terminal, with diode D2, diode D3 composition clamp circuit by signal clamper 0~+
In 5V；The frequency-selective switch circuit selects transport and placing device AR1 and resistance R3~resistance R5 and capacitor C3, capacitor C4 composition phase shift electricity
Road adjustment signal pulse width, then divides two-way to adjust signal respectively, wherein using triode Q4, triode Q3 and fortune all the way
It puts device AR2 to adjust signal amplitude, another way is with resistance R9~resistance R11 and capacitor C4~capacitor C6 composition frequency selection circuit sieve
Select single-frequency signals, last two paths of signals is together in input filter output circuit, filtering output circuit with inductance L1 and
It is exported after capacitor C7, capacitor C8 composition π type filter circuit filtering, that is to say the received number of controlling terminal of compensation household monitor
According to signal potential；
The frequency-selective switch circuit includes transport and placing device AR1, one end of the homophase input termination capacitor C2 of transport and placing device AR1 and resistance R4
One end, the other end ground connection of capacitor C2, one end of the anti-phase input terminating resistor R3 of transport and placing device AR1, resistance R5, resistance R3's
The anode of another terminating diode D4 and the other end of resistance R4, the other end and electricity of the output terminating resistor R5 of transport and placing device AR1
Hinder one end of R9, capacitor C4, one end of another termination capacitor C5 of capacitor C4, resistance R10, another terminating resistor of resistance R9
One end of R11, capacitor C6, resistance R10, capacitor C6 the other end ground connection, the other end of another termination capacitor C5 of resistance R11 and
The output end of transport and placing device AR2, the cathode of diode D4 connect one end of capacitor C3 and non-inverting input terminal, the triode of transport and placing device AR2
The collector of Q3, another terminating resistor R6, one end of resistance R7 and the base stage of triode Q4 of capacitor C3, the other end of resistance R7
Ground connection, the grounded collector of triode Q4, the other end of the emitter connecting resistance R6 of triode Q4 and the base stage of triode Q3, three
The inverting input terminal of the emitter connecting resistance R8 of pole pipe Q3, transport and placing device AR2, the other end ground connection of resistance R8.
2. a kind of signal interference preventer of household monitor according to claim 1, it is characterised in that: the filtering is defeated
Circuit includes resistance R12 out, and the one of resistance R12 terminates the output end of transport and placing device AR2, another termination inductance L1's of resistance R12
One end of one end and capacitor C7, the other end ground connection of capacitor C7, one end of another termination capacitor C8 of inductance L1, resistance R13, electricity
Hold the other end ground connection of C8, another termination signal output port of resistance R13.
3. a kind of signal interference preventer of household monitor according to claim 1, it is characterised in that: the signal frequency
Rate Acquisition Circuit includes the signal frequency collector J1 of model SJ-ADC, the power supply termination capacitor of signal frequency collector J1
C1, one end of resistance R1 and power supply+5V and diode D2 cathode, signal frequency collector J1 ground terminal ground connection, signal
Output termination capacitor C1, the other end of resistance R1 and one end of resistance R2 of frequency collection device J1, another termination of resistance R2 are steady
The cathode of pressure pipe D1 and cathode, the anode of diode D2 and the anode of diode D4 of diode D3, the anode of voltage-stabiliser tube D1 connect
Ground, the plus earth of diode D3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920541525.4U CN209562520U (en) | 2019-04-20 | 2019-04-20 | A kind of signal interference preventer of household monitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920541525.4U CN209562520U (en) | 2019-04-20 | 2019-04-20 | A kind of signal interference preventer of household monitor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209562520U true CN209562520U (en) | 2019-10-29 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920541525.4U Expired - Fee Related CN209562520U (en) | 2019-04-20 | 2019-04-20 | A kind of signal interference preventer of household monitor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209562520U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111585584A (en) * | 2020-05-06 | 2020-08-25 | 白有华 | 5G communication cable signal transmission system |
-
2019
- 2019-04-20 CN CN201920541525.4U patent/CN209562520U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111585584A (en) * | 2020-05-06 | 2020-08-25 | 白有华 | 5G communication cable signal transmission system |
| CN111585584B (en) * | 2020-05-06 | 2022-02-25 | 上海山源电子科技股份有限公司 | 5G communication cable signal transmission system |
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Granted publication date: 20191029 Termination date: 20210420 |