CN208208086U - Infrared remote-controlled signal receiver - Google Patents
Infrared remote-controlled signal receiver Download PDFInfo
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- CN208208086U CN208208086U CN201820844194.7U CN201820844194U CN208208086U CN 208208086 U CN208208086 U CN 208208086U CN 201820844194 U CN201820844194 U CN 201820844194U CN 208208086 U CN208208086 U CN 208208086U
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Abstract
The utility model is suitable for Infrared Ray Remote Control Technology field, provides a kind of infrared remote-controlled signal receiver, comprising: external infrared signal receiver, IR signal detector, internal infrared signals receiver, block device and door and IR decoder；Wherein, the external infrared signal receiver respectively with the input terminal of the IR signal detector, described connect with the input terminal of door, the input terminal of the block device is connect with the output end of the internal infrared signals receiver, the IR signal detector respectively, the output end of the block device is connect with described with the input terminal of door, described to connect with the output end of door with the IR decoder.The utility model solves infrared remote-controlled signal receiver in the prior art and can not be correctly decoded the IR signal received and fail or the technical issues of failure, and circuit is simple, at low cost.
Description
Technical field
The utility model relates to Infrared Ray Remote Control Technology field more particularly to a kind of infrared remote-controlled signal receivers.
Background technique
Nowadays more and more families or all selections of hotel's finishing ensconce set-top box or other electronic equipments in cabinet for TV
It stashes behind face or television set, achievees the effect that simple and beautiful, but will lead to infrared inside set-top box or other equipment connect
Remote signal can not be received by receiving device (referred to as " IR "), so solution is to increase an extension with IR in device external
Line extends to outside, since small in size can be mounted on TV set panel or wall reaches concealing device, guarantees finishing concise beauty
The effect of sight.
Infrared remote control have it is low in cost, low energy consumption, long service life, and the advantages such as easy to operate are always maintained at market
High utilization rate.
With more and more simple and beautiful drawer types, wall, the concealed domestic or commercial electronic equipment such as wall type are filled out
Occur, since infrared signal needs line-of-sight transmission, brings limitation to traditional infrared field of remote control, therefore many nothings that has been born
Line remote controler, but cost is all much higher than traditional infrared remote controler without exception.So many clients still wish to keep this object
The inexpensive and practical scheme of U.S..
Nowadays general method is that IR receiver is mounted on view using external infrared remote receiver (referred to as " IR ") extended line
Line visible location, and retain external IR receiver simultaneously.Exterior I R receiver and equipment external IR receiver are used in parallel or make
With simple " with a door " circuit, to realize that two-way IR signal, which is merged into IR signal all the way, gives IR decoder.
The prior art has a serious drawback, although external IR receiver is blocked, remains to receive some IR letters
Number, such two-way IR receives remote signal, since to will appear receiving time inconsistent for two IR itself or external cause, two
When merging, due to the inherent characteristic with door, low level pulse width broadens signal received by a IR receiver, and waveform loses
Very, the IR signal for causing equipment to be an actually-received can not be correctly decoded and fail or insensitive phenomenon, multiple by remote control
Ability response is primary (see attached drawing 1).
Utility model content
The utility model provides a kind of infrared remote-controlled signal receiver, it is intended to solve infrared remote-controlled signal in the prior art
Receiver can not be correctly decoded the IR signal received and fail or the technical issues of failure.
To achieve the above object, the utility model provides a kind of infrared remote-controlled signal receiver, comprising: external infrared signal
Receiver, IR signal detector, internal infrared signals receiver, block device and door and IR decoder；
Wherein, the external infrared signal receiver respectively with the input terminal of the IR signal detector, described with door
Input terminal connection, the input terminal of the block device respectively with the internal infrared signals receiver, the IR signal detector
Output end connection, the output end of the block device are connect with described with the input terminal of door, the output end and the IR with door
Decoder connection.
The further technical solution of the utility model is that the IR signal detector includes IR signal deteching circuit, institute
Stating IR signal deteching circuit includes resistance R318, resistance R319, resistance R320, capacitor C184, diode PD2 and positive-negative-positive three
Pole pipe Q18, wherein
The emitter of the PNP type triode Q18 is connect with power supply VCC, and ground level is connect with one end of the resistance R320,
Collector is connect with the anode of the diode PD2, and the cathode of the diode PD2 is connect with one end of the resistance R319,
The other end of the resistance R319 respectively with one end of the resistance R318, one end of the capacitor C184 and the blocking
The input terminal of device connects, the other end of the resistance R318, the capacitor C184 the other end be grounded respectively.
The further technical solution of the utility model is that the block device includes IR signal blocker circuit, the IR letter
Number block circuit include resistance R3, resistance R4, resistance R5, NPN type triode Q16, NPN type triode Q17 and N-channel field
Effect pipe FQ14, wherein
The grid of the N-channel field-effect tube FQ14 respectively with one end of the resistance R319, the resistance R318 one
End, the capacitor C184 one end connection, the drain of the N-channel field-effect tube FQ14 respectively with one end of the resistance R3,
The ground level connection of the collector of the NPN type triode Q16, the NPN type triode Q17, the N-channel field-effect tube FQ14
Source electrode ground connection, the base stage of the NPN type triode Q16 connect with one end of external world resistance R5, the NPN type triode Q16
Emitter ground connection, the collector of the NPN type triode Q17 respectively with one end of the resistance R4, the input with door
End connection, the other end of the resistance R3, the resistance R4 the other end respectively with one end of extraneous resistance R1, extraneous resistance R2
One end, extraneous resistance R199 one end connection, the other end of the resistance R5 connect with the other end of external world's resistance.
The further technical solution of the utility model is that the other end of the external world resistance R1 is red with the inside respectively
The anode connection of the VCC pin of external signal receiver, extraneous capacitor C1, the cathode of the external world capacitor C1 and the inside are infrared
The GND pin of signal receiver connects ground connection, the other end of the resistance R5, one end of the external world resistance R2 respectively with it is described
The OUT pin of internal infrared signals receiver connects, and the other end of the external world resistance R199 is respectively with described with door VCC
One end connection of pin, extraneous capacitor C262, the other end ground connection of the external world capacitor C262.
The beneficial effects of the utility model are: the utility model infrared remote-controlled signal receiver through the above technical solutions,
It include: that external infrared signal receiver, IR signal detector, internal infrared signals receiver, block device and door and IR are solved
Code device；Wherein, the external infrared signal receiver respectively with the input terminal of the IR signal detector, the input with door
End connection, the output with the internal infrared signals receiver, the IR signal detector respectively of the input terminal of the block device
End connection, the output end of the block device are connect with described with the input terminal of door, described to decode with the output end of door and the IR
Device connection, solve infrared remote-controlled signal receiver in the prior art can not be correctly decoded the IR signal received and fail or
The technical issues of failure.
Detailed description of the invention
Fig. 1 is the system block diagram and waveform diagram of infrared remote control in the prior art；
Fig. 2 is the system block diagram of the utility model infrared remote-controlled signal receiver preferred embodiment；
Fig. 3 is the electrical block diagram of the utility model infrared remote-controlled signal receiver preferred embodiment；
Fig. 4 is the waveform diagram using the IR signal after the preferred embodiment of infrared remote-controlled signal receiver.
The embodiments will be further described with reference to the accompanying drawings for the realization, functional characteristics and advantage of the utility model aim.
Specific embodiment
It should be appreciated that specific embodiment described herein is only used to explain the utility model, it is not used to limit this
Utility model.
The primary solutions of the utility model infrared remote-controlled signal receiver embodiment are: changing software and chip
In the case where, two-way infrared signal receiver is solved with the mode of simple hardware circuit while being received signal and being interfered with each other and lead
The problem of causing infrared remote-controlled signal receiver garbled-reception telecommand.The utility model infrared remote-controlled signal receiver is mainly
Detect whether external infrared signal receiver receives effective IR signal using IR signal detector, if detected effective outer
Portion's IR signal then blocks internal signal and the signal between door to transmit, so that internal infrared signals be inhibited to connect by block device
The IR signal of device is received, the IR signal of only external infrared signal receiver is transmitted to IR decoder, if be not detected external red
The IR signal of external signal receiver, then block device does not work, and the IR signal of internal infrared signals receiver is transmitted to IR decoding
Device, the IR signal received can not be correctly decoded and fail or lose by thus solving infrared remote-controlled signal receiver in the prior art
The technical problem of spirit.
Specifically, referring to figure 2., Fig. 2 is the system frame of the utility model infrared remote-controlled signal receiver preferred embodiment
Figure.
As shown in Fig. 2, the infrared remote-controlled signal receiver proposed in the present embodiment include: external infrared signal receiver,
IR signal detector, internal infrared signals receiver, block device and door and IR decoder.
Wherein, the external infrared signal receiver respectively with the input terminal of the IR signal detector, described with door
Input terminal connection, the input terminal of the block device respectively with the internal infrared signals receiver, the IR signal detector
Output end connection, the output end of the block device are connect with described with the input terminal of door, the output end and the IR with door
Decoder connection.
Specifically, as an implementation, as shown in figure 3, the IR signal detector includes IR signal deteching circuit,
The IR signal deteching circuit includes resistance R318, resistance R319, resistance R320, capacitor C184, diode PD2 and positive-negative-positive
Triode Q18.
Wherein, the emitter of the PNP type triode Q18 is connect with power supply VCC, one end of ground level and the resistance R320
Connection, collector are connect with the anode of the diode PD2, one end of the cathode of the diode PD2 and the resistance R319
Connection, the other end of the resistance R319 respectively with one end of the resistance R318, one end of the capacitor C184 and described
The input terminal of block device connects, the other end of the resistance R318, the capacitor C184 the other end be grounded respectively.
The block device includes IR signal blocker circuit, and the IR signal blocker circuit includes resistance R3, resistance R4, resistance
R5, NPN type triode Q16, NPN type triode Q17 and N-channel field-effect tube FQ14.
Wherein, the grid of the N-channel field-effect tube FQ14 respectively with one end of the resistance R319, the resistance R318
One end, the capacitor C184 one end connection, the drain of the N-channel field-effect tube FQ14 respectively with the resistance R3 one
The ground level connection at end, the collector of the NPN type triode Q16, the NPN type triode Q17, the N-channel field-effect tube
The source electrode of FQ14 is grounded, and the base stage of the NPN type triode Q16 is connect with one end of extraneous resistance R5, the NPN type triode
The emitter of Q16 is grounded, the collector of the NPN type triode Q17 respectively with one end of the resistance R4, described with door U17
Input terminal connection, other end one end, the external world with extraneous resistance R1 respectively of the other end of the resistance R3, the resistance R4
One end connection of one end of resistance R2, extraneous resistance R199, the other end of the other end of the resistance R5 and the extraneous resistance
Connection.
Further, in the present embodiment, the other end of the external world resistance R1 is received with the internal infrared signals respectively
The anode connection of the VCC pin of device, extraneous capacitor C1, the cathode and the internal infrared signals receiver of the external world capacitor C1
GND pin connect ground connection, the other end of the resistance R5, one end of the external world resistance R2 respectively with the infrared letter in the inside
The OUT pin connection of number receiver, the other end of the external world resistance R199 respectively with the VCC pin with door U17, outer
One end of boundary capacitor C262 connects, the other end ground connection of the external world capacitor C262.
It is further described in detail below with reference to circuit operation principle of the Fig. 3 and Fig. 4 to the present embodiment:
Attached drawing 3 is the electrical block diagram of the utility model infrared remote-controlled signal receiver preferred embodiment, wherein electricity
Hinder the IR letter that R320, triode Q18, diode PD2, resistance R319, resistance R318 and capacitor C184 constitute IR signal detector
Number detection circuit.Resistance R5, triode Q16, resistance R3, Q17, resistance R4 and field-effect tube FQ14 constitute the IR signal of block device
Block circuit.Wherein triode Q18 is PNP type triode, and triode Q16 and triode Q17 are NPN type triode, field-effect
Pipe FQ14 is N-channel field-effect tube.
The working principle of IR signal deteching circuit is as follows: when external infrared signal receiver does not receive IR signal, it
Output network EXT_IR_IN keep high level, triode Q18 is in off state, and the charge on such capacitor C184 can lead to
Resistance R318 electric discharge is crossed, so that the upper end of capacitor C184 is low level；When external infrared signal receiver receives exterior I R letter
Number when, network EXT_IR_IN will appear the alternate waveform of height pulse, and the low level pulse of network EXT_IR_IN is in by Q18
Saturation conduction state, so that power supply VCC charges to capacitor C184 by diode PD2 and resistance R319.Since charging impedance is 0
Ohm, so capacitor C184 can be filled in a short period of time, that is, the upper end of capacitor C184 is high level.
Between the high period of the height pulse of network EXT_IR_IN, PNP type triode Q18 cut-off, capacitor C184 is still
It can be discharged by resistance R318, as long as reasonably selecting the value of resistance R318 and capacitor C184 (when electric discharge constant is the position of IR signal
Long 2-3 times), it is ensured that between the high period of the height pulse of network EXT_IR_IN, the voltage of the upper end capacitor C184 is tieed up
Hold certain high level.It can be seen that IR signal deteching circuit, which is realized, converts the upper end capacitor C184 for the presence or absence of IR signal
The function of voltage.When no exterior I R signal, the voltage of the upper end capacitor C184 is low level；When there is exterior I R signal, capacitor
The voltage of the upper end C184 is high level.
The working principle of IR signal blocker circuit is as follows: internal IR signal IR1_OUT passes through two-stage triode Q16 and Q17
IR1 reversely is obtained, it is consistent with original signal IR1_OUT.A N-channel field-effect tube in parallel between two-stage triode
FQ14.When the grid of FQ14 is high level, FQ14 conducting drags down network IR1_OFF pressure, and second level triode Q17 is cut
Only, due to the effect of pull-up resistor R4, network IR1 always remains as high level, so that internal IR signal IR1_OUT is hindered
Gear, fails to be transmitted to and door U17.
The working principle of the entire circuit of the present embodiment is as follows: when no exterior I R signal, the voltage of the upper end capacitor C184 is
Low level, FQ14 cut-off, does not have an impact network IR1, internal IR signal can be transmitted to and door U17；When there is exterior I R signal
When, the voltage of the upper end capacitor C184 is high level, and FQ14 is connected, and internal IR signal is blocked, cannot be transmitted to and door U17.Please
It is that can be seen using the waveform diagram of the IR signal after the preferred embodiment of infrared remote-controlled signal receiver by Fig. 4 referring to Fig. 4, Fig. 4
It arrives, when two-way IR has signal, since internal IR signal is blocked, the IR signal after merging and exterior I R signal complete one
It causes.
In conclusion the utility model infrared remote-controlled signal receiver is through the above technical solutions, include: external infrared letter
Number receiver, IR signal detector, internal infrared signals receiver, block device, with door and IR decoder；Wherein, described outer
Portion's infrared signal receiver respectively with the input terminal of the IR signal detector, it is described connect with the input terminal of door, the blocking
The input terminal of device is connect with the output end of the internal infrared signals receiver, the IR signal detector respectively, the blocking
The output end of device is connect with described with the input terminal of door, described to connect with the output end of door with the IR decoder, is solved existing
There is the infrared remote-controlled signal receiver in technology that can not be correctly decoded the IR signal received and fail or the technical issues of failure,
And the advantage that the utility model has circuit simple, at low cost.
The above is only the preferred embodiment of the present invention, and therefore it does not limit the scope of the patent of the utility model,
Equivalent structure made by using the description of the utility model and the drawings or process transformation, are applied directly or indirectly in
Other relevant technical fields, are also included in the patent protection scope of the utility model.
Claims (4)
1. a kind of infrared remote-controlled signal receiver characterized by comprising external infrared signal receiver, IR signal detector,
Internal infrared signals receiver, block device and door and IR decoder；
Wherein, the external infrared signal receiver respectively with the input terminal of the IR signal detector, the input with door
End connection, the output with the internal infrared signals receiver, the IR signal detector respectively of the input terminal of the block device
End connection, the output end of the block device are connect with described with the input terminal of door, described to decode with the output end of door and the IR
Device connection.
2. infrared remote-controlled signal receiver according to claim 1, which is characterized in that the IR signal detector includes IR
Signal deteching circuit, the IR signal deteching circuit include resistance R318, resistance R319, resistance R320, capacitor C184, diode
PD2 and PNP type triode Q18, wherein
The emitter of the PNP type triode Q18 is connect with power supply VCC, and ground level is connect with one end of the resistance R320, current collection
Pole is connect with the anode of the diode PD2, and the cathode of the diode PD2 is connect with one end of the resistance R319, described
The other end of resistance R319 respectively with one end of the resistance R318, one end of the capacitor C184 and the block device
Input terminal connection, the other end of the resistance R318, the capacitor C184 the other end be grounded respectively.
3. infrared remote-controlled signal receiver according to claim 2, which is characterized in that the block device includes the resistance of IR signal
Deenergizing, the IR signal blocker circuit include resistance R3, resistance R4, resistance R5, NPN type triode Q16, NPN type triode
Q17 and N-channel field-effect tube FQ14, wherein
The grid of the N-channel field-effect tube FQ14 respectively with one end of the resistance R319, one end of the resistance R318, institute
State one end connection of capacitor C184, the drain of the N-channel field-effect tube FQ14 respectively with one end of the resistance R3, described
The ground level connection of the collector of NPN type triode Q16, the NPN type triode Q17, the source of the N-channel field-effect tube FQ14
Pole ground connection, the base stage of the NPN type triode Q16 are connect with one end of extraneous resistance R5, the hair of the NPN type triode Q16
Emitter grounding, the collector of the NPN type triode Q17 connect with one end of the resistance R4, the input terminal with door respectively
Connect, the other end of the resistance R3, the resistance R4 the other end respectively with one end of extraneous resistance R1, extraneous resistance R2 one
One end connection at end, extraneous resistance R199, the other end of the resistance R5 are connect with the other end of the extraneous resistance.
4. infrared remote-controlled signal receiver according to claim 3, which is characterized in that the other end of the external world resistance R1
It is connect respectively with the anode of the VCC pin of the internal infrared signals receiver, extraneous capacitor C1, the external world capacitor C1's is negative
Pole connect ground connection, the other end of the resistance R5, the external world resistance R2 with the GND pin of the internal infrared signals receiver
One end connect respectively with the OUT pin of the internal infrared signals receiver, the other end point of the external world resistance R199
It is not connect with described one end with the VCC pin of door, extraneous capacitor C262, the other end ground connection of the external world capacitor C262.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820844194.7U CN208208086U (en) | 2018-06-01 | 2018-06-01 | Infrared remote-controlled signal receiver |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820844194.7U CN208208086U (en) | 2018-06-01 | 2018-06-01 | Infrared remote-controlled signal receiver |
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| CN208208086U true CN208208086U (en) | 2018-12-07 |
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| CN201820844194.7U Active CN208208086U (en) | 2018-06-01 | 2018-06-01 | Infrared remote-controlled signal receiver |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110740368A (en) * | 2019-11-25 | 2020-01-31 | 上海邸客网络科技有限公司 | infrared enhanced digital television control method |
| CN114333283A (en) * | 2021-12-18 | 2022-04-12 | 珠海格力电器股份有限公司 | Household appliance and control method, circuit and storage medium thereof |
-
2018
- 2018-06-01 CN CN201820844194.7U patent/CN208208086U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110740368A (en) * | 2019-11-25 | 2020-01-31 | 上海邸客网络科技有限公司 | infrared enhanced digital television control method |
| CN114333283A (en) * | 2021-12-18 | 2022-04-12 | 珠海格力电器股份有限公司 | Household appliance and control method, circuit and storage medium thereof |
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