CN206596142U - A kind of satellite-signal detector auxiliary control circuit - Google Patents
A kind of satellite-signal detector auxiliary control circuit Download PDFInfo
- Publication number
- CN206596142U CN206596142U CN201621266169.2U CN201621266169U CN206596142U CN 206596142 U CN206596142 U CN 206596142U CN 201621266169 U CN201621266169 U CN 201621266169U CN 206596142 U CN206596142 U CN 206596142U
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- Prior art keywords
- control unit
- circuit
- lnb
- satellite
- power supply
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- 238000005070 sampling Methods 0.000 claims description 16
- 238000006243 chemical reaction Methods 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 5
- 238000009434 installation Methods 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
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Abstract
The utility model is related to a kind of satellite-signal detector auxiliary control circuit, including single-chip microcomputer, key switch SW7, the first power supply circuit and the second power supply circuit, key switch is connected with the first power supply circuit, and control first power supply circuit to close or disconnect, single-chip microcomputer is connected with second power supply circuit, and control the second power supply circuit closure or disconnect, the first power supply circuit and the second power supply circuit are connected power supply with single-chip microcomputer respectively.The utility model single-chip microcomputer uses double circuit powering mode, during switching on and shutting down, powered by the first power supply circuit for single-chip microcomputer, the second power supply circuit closure is controlled by single-chip microcomputer again or disconnected, so as to avoid plug power supply adaptor from causing equipment to open by mistake machine phenomenon, so that key switch circuit more stablizes safety, without standby wakeup, the problems such as in the absence of there is low-power consumption.
Description
Technical field
The utility model is related to satellite-signal detector technical field, more specifically refers to a kind of satellite-signal detector
Auxiliary control circuit.
Background technology
As people's living standard is increasingly improved, existing television set be not confined to the reception of terrestrial television signal, also
Need by satellite television receiver（It is commonly called as satellite set top box）Receive viewing satellite television programming.Satellite set top box makes in installation
With preceding, it usually needs carry out adjustment and installation using satellite-signal detector, and existing professional satellite-signal detector price is high
It is expensive, therefore there are many satellite-signal detectors reequiped based on existing satellite set top box in market.This easy satellite
Signal detecting and measuring apparatus in order to inexpensive satellite set top box is converted into satellite-signal detector, it is necessary to increase it is substantial amounts of control conversion electricity
Road, circuit structure is complicated, and when connecting the LNB of satellite set top box, easily satellite-signal detector is damaged caused by LNB short circuits
It is bad, or in plug LNB, LNB has voltage difference with satellite-signal detector cell voltage, causes the phenomenons such as fault.
The content of the invention
The utility model provides a kind of satellite-signal detector auxiliary control circuit, to solve existing satellite-signal detector
Auxiliary control circuit is complicated, LNB and the problems such as unstable power circuit.
The utility model is adopted the following technical scheme that：
A kind of satellite-signal detector auxiliary control circuit, including main control unit, LNB and power control unit, AV conversions
Control unit, button and indicator lamp control unit and set top box interface control unit, the main control unit respectively with it is above-mentioned each
The connection of individual control unit, for the work between Coordination Treatment each control unit, the AV change-over circuits are used to control the machine
With the switching of AV input sources, the button is used for control button scanning with indicator lamp control unit and shown with indicator lamp, and will sweep
The key set code retouched is sent to main control unit, and the set top box interface control unit is in set top box, for receiving or feeding back control
System instruction is to the main control unit, and the LNB includes LNB controls circuit, protection circuit and partial pressure with power control unit and sampled
Circuit, the LNB boostings power supply circuit includes AP3031 boost chips, for being powered to LNB, and the protection circuit is used to control
The IO level protection main control unit and LNB control circuits of main control unit, the pressure sampling circuit are sampled for cell voltage, and
It is sent to main control unit.
Further, the main control unit is by single-chip microcomputer control, and the single-chip microcomputer includes AD sampling stitch and short-circuit alarming
Stitch, the AD samplings stitch is connected with the pressure sampling circuit, and the short-circuit alarming stitch is connected with the protection circuit.
Further, the AV TCU transfer control units include SGM3002 switching chips and SGM4891 power amplifier chips.
Further, the button includes FD655 process chips, 47 segment numeral pipes and 35 with indicator lamp control unit
Position key scanning circuit.
Further, the set top box interface control unit is connected by infrared ray with the main control unit.
From the above-mentioned description to the utility model structure, compared to the prior art, the utility model has following excellent
Point：
1st, a kind of satellite-signal detector auxiliary control circuit of the utility model, LNB uses LNB with power control unit
Control circuit control satellite-signal detector LNB powers, protection circuit control main control unit IO level, the energy when LNB is short-circuit
Main control unit IO level is enough dragged down, main control unit and LNB control circuits are protected, while main control unit is sampled by partial pressure
Circuit obtains the sampling of cell voltage, and carries out function switching according to LNB states, such as disconnects LNB control circuits, prevents satellite
Signal detecting and measuring apparatus is when connecting LNB, the phenomenon such as fault caused by LNB and voltage difference between cell voltage.
2nd, the utility model is in addition to LNB and power control unit, in addition to main control unit, AV TCU transfer control units, button
With indicator lamp control unit and set top box interface control unit, AV TCU transfer control units switch chip using SGM3002, can
Complete the switching of the machine and AV input sources fast and stable；Button uses FD655 chips, FD655 cores with indicator lamp control unit
Piece can support 47 segment numeral pipes and 35 key scanning circuits, and it has cost low, and cost performance is high, and key command code is neat
Congruent advantage, set top box interface control unit transmits fast and stable using infrared signal；It follows that this satellite-signal is detected
Not only circuit structure is simple for instrument auxiliary control circuit, and cost is low, and cost performance is high, and power circuit safety and stability, can be in LNB
Effective protection is played when short-circuit, and prevents from causing fault phenomenon during plug LNB.
Brief description of the drawings
Fig. 1 is the utility model structured flowchart；
Fig. 2 is the utility model main control unit circuit diagram；
Fig. 3 is the utility model LNB and power control unit circuit diagram；
Fig. 4 is the utility model AV TCU transfer control unit circuit diagrams；
Fig. 5 is the utility model button and indicator lamp control unit circuit diagram；
Fig. 6 is the utility model set top box interface control unit circuit diagram.
Embodiment
Illustrate the embodiment of the utility model embodiment with reference to the accompanying drawings.
Reference picture 1, a kind of satellite-signal detector auxiliary control circuit, including main control unit 1, LNB and power supply list
Member 2, AV TCU transfer control units 3, button and indicator lamp control unit 4 and set top box interface control unit 5.1 point of main control unit
It is not connected with each above-mentioned control unit, for the work between Coordination Treatment each control unit；LNB and power control unit
2 for satellite-signal detector LNB for powering, battery sampling, and protects main control unit 1 and power supply circuit itself；AV conversion controls
Unit 3 processed is used for the switching for controlling the machine and AV input sources；Button is used for satellite-signal detector with indicator lamp control unit 4
The display of key scan and indicator lamp, and the key set code of scanning is sent to main control unit 1；Set top box interface control unit 5 is set
In in set top box, instructed for reception or feedback control to main control unit 1.
Reference picture 3, LNB includes LNB controls circuit 21, protection circuit 22 and pressure sampling circuit with power control unit 2
23, LNB control circuits 21 control the LNB of satellite-signal detector to power using AP3031 boost chips 211.22 points of protection circuit
Do not control circuit 21 and main control unit 1 to be connected with LNB, LNB states can be obtained and be sent to main control unit 1, while to master control list
The IO of member 1 is protected, and when LNB is short-circuit, can drag down the IO level of main control unit 1, so as to protect main control chip and LNB to control
Circuit 21 processed.Pressure sampling circuit 23 is used to sample to satellite-signal detector cell voltage, and is sent to main control unit
1, main control unit 1 is obtaining LNB states and battery voltage sampling value, can carry out function switching, such as disconnects LNB control circuits
Deng, when preventing satellite-signal detector and set top box LNB plugs, the circuit caused by the voltage difference between LNB and cell voltage therefore
The phenomenons such as barrier.
Reference picture 2, main control unit 1 is controlled by single-chip microcomputer 11, and single-chip microcomputer 11 uses the STC12LE5204AD systems of STC Corporation
Row single-chip microcomputer 11.Include AD sampling stitch on single-chip microcomputer 11（Stitch 13）With short-circuit alarming stitch（Stitch 8）, AD sampling stitch with
Pressure sampling circuit 23 is connected, and short-circuit alarming stitch is connected with protection circuit 22.Also include with button with indicating on single-chip microcomputer 11
The serial data bus stitch that lamp control unit 4 is connected（Stitch 14, stitch 15）；The stitch being connected with AV TCU transfer control units 3
3rd, stitch 6, stitch 7；Stitch 16, stitch 17, the stitch 19 being connected with set top box interface control unit 5.
Reference picture 4, AV TCU transfer control units 3 include SGM3002 and switch chip and SGM4891 power amplifier chips, SGM3002
Switching chip is used for the switching for being responsible for the machine and set top box AV input sources, and SGM4891 power amplifier chips are used to realize beep alarms
Sent on the loudspeaker of satellite-signal detector.
Reference picture 5, button includes FD655 process chips 31,47 segment numeral pipes 32 and 35 with indicator lamp control unit 4
Position key scanning circuit 33, FD655 process chips 31 are connected with 47 segment numeral pipes 32 and 35 key scanning circuits 33 respectively,
And the key set code of scanning is sent to main control unit 1, while showing the number that main control unit 1 is sent on 47 segment numeral pipes 32
According to.
Reference picture 6, set top box interface control unit 5 includes M3329 chips, and M3329 chips are used for reception processing master control list
The infrared signal of member 1, shows while M3329 diseqc signals are transferred into main control unit 1 with polarization mode signal.
Embodiment of the present utility model is above are only, but design concept of the present utility model is not limited thereto,
All changes for carrying out unsubstantiality to the utility model using this design, all should belong to the row for invading the utility model protection domain
For.
Claims (5)
1. a kind of satellite-signal detector auxiliary control circuit, including main control unit, LNB and power control unit, AV conversion controls
Unit processed, button and indicator lamp control unit and set top box interface control unit, the main control unit respectively with it is above-mentioned each
Control unit is connected, and for the work between Coordination Treatment each control unit, the AV TCU transfer control units are defended for control
The switching of star signal detecting and measuring apparatus and set top box AV input sources, the button and indicator lamp control unit be used for control button scanning with
Indicator lamp is shown, and the key set code of scanning is sent into main control unit, and the set top box interface control unit is located in set top box,
Instructed for reception or feedback control to the main control unit, it is characterised in that：The LNB includes LNB with power control unit
Circuit, protection circuit and pressure sampling circuit are controlled, the LNB controls circuit includes AP3031 boost chips, for controlling to defend
The LNB of star signal detecting and measuring apparatus powers, and the protection circuit is used to control the IO level of main control unit to protect main control unit and LNB controls
Circuit processed, the pressure sampling circuit is sampled for cell voltage, and is sent to main control unit.
2. a kind of satellite-signal detector auxiliary control circuit according to claim 1, it is characterised in that：The master control
Unit is by single-chip microcomputer control, and the single-chip microcomputer includes AD and sampled stitch and short-circuit alarming stitch, the AD sampling stitch with it is described
Pressure sampling circuit is connected, and the short-circuit alarming stitch is connected with the protection circuit.
3. a kind of satellite-signal detector auxiliary control circuit according to claim 1, it is characterised in that：The AV turns
Change control unit and switch chip and SGM4891 power amplifier chips including SGM3002.
4. a kind of satellite-signal detector auxiliary control circuit according to claim 1, it is characterised in that：The button
Include FD655 process chips, 47 segment numeral pipes and 35 key scanning circuits with indicator lamp control unit.
5. a kind of satellite-signal detector auxiliary control circuit according to claim 1, it is characterised in that：The machine top
Pod interface control unit is connected by infrared ray with the main control unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621266169.2U CN206596142U (en) | 2016-11-24 | 2016-11-24 | A kind of satellite-signal detector auxiliary control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621266169.2U CN206596142U (en) | 2016-11-24 | 2016-11-24 | A kind of satellite-signal detector auxiliary control circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206596142U true CN206596142U (en) | 2017-10-27 |
Family
ID=60131104
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621266169.2U Expired - Fee Related CN206596142U (en) | 2016-11-24 | 2016-11-24 | A kind of satellite-signal detector auxiliary control circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206596142U (en) |
-
2016
- 2016-11-24 CN CN201621266169.2U patent/CN206596142U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171027 |