CN2187355Y - Infrared remote-controlled automatic socket - Google Patents

Abstract

The utility model relates to an infrared remote-control automatic socket, which is mainly used as a power socket of a remote-control TV. The utility model comprises a control circuit arranged inside a socket 1, and the control circuit comprises an automatic all-shutdown circuit which picks load current signals and is self-locking. The utility model is characterized in that the socket also comprises an infrared ray receiving amplifying circuit (RD) and a clamping current limiting circuit formed by the series connection of a diode (D3) and a resistor (R3). The clamping current limiting circuit and the base of a transistor V1 undertaking second-stage amplification in the automatic all-shutdown circuit are connected together to form a negative pulse clamped amplifier. Not only can the utility model remotely control televisions to realize all shutdown, but also can remotely control the starting of televisions.

Description

Infrared remote-controlled automatic socket

The utility model relates to a kind of supply socket, and a kind of supply socket that can cut off general supply when bearing power reduces automatically mainly is applicable to and makes remote control home appliance, particularly is applicable to the supply socket of making remote-controlled television set.

The remote-controlled television set great majority all have the remote-control closedown function, but shutdown back general supply is not cut off, still be in operating state to be made by central microprocessor (CPU) and control circuit that peripheral circuit constituted thereof in the machine, not only want consumed power (about 3～5W), but also wearing out of meeting accelerated electron element also can cause the generation of other contingency sometimes.In order to overcome the existing above-mentioned deficiency of remote-controlled television set, the control circuit of various ways is disclosed on the various e-newspapers.But anyly be made of start button and feedback latching circuit, the feedback signal of only being picked up is different, has plenty of composite video signal in the machine, has plenty of DC power supply in the machine, also has plenty of load current signal.Various technical schemes of the prior art in a word all must manually start, and have run counter to the basic goal that RTV remote television is provided with remote control switch, are made troubles with the person on the contrary.In addition, utilize the controlling schemes of interior composite video signal of machine or the self-locking of DC power supply feedback also must transform, therefore more be not easy to promote the use of television set.

In view of the above-mentioned deficiency of existing in prior technology, the purpose of this utility model is to disclose the automatic complete closedown socket of a kind of infra-red remote control, and it has remote control and starts advantage easy to use.

Another purpose of the present utility model is to disclose the automatic complete closedown socket of infra-red remote control that can not start voluntarily when send a telegram in reply in a kind of back that cuts off the power supply.

The utility model realizes that the above-mentioned purpose technical solution comprises the control circuit that is located in the socket, this circuit comprises D.C. regulated power supply and picks up the automatic complete closedown circuit of load current signal self-locking, it is characterized in that the clamper current-limiting circuit that comprises that also infrared ray receives amplifying circuit and connected with resistance and constituted by diode; Output with infrared ray reception amplifying circuit of described clamper current-limiting circuit is connected, the base stage of bearing the triode that amplifies the second level in other end and the automatic complete closedown circuit connects and composes a negative pulse clamper amplifier, the undersuing that infrared ray is received amplifying circuit output is amplified, send an enabling signal for automatic complete closedown circuit, realize that remote control starts power supply.

The utility model realizes that the feature of the technical solution of above-mentioned another purpose is the output of described negative pulse clamper amplifier and is connected to the buffer starting switch, the error starting signal shorted to earth of being exported when this switch will have a power failure the back telegram in reply is eliminated the error starting when sending electricity suddenly.Described buffer starting switch is the rc-delay circuit of connecting on the base stage of a triode, what repid discharge diode of connection was constituted on the negative pole of delay capacitor in this delay circuit again.

The utility model compared with prior art has following outstanding advantage and effect:

1, complete closedown automatically not only, and can remote control start power supply;

Although 2 adopt infra-red remote controls to start, send still error starting voluntarily not of electricity after having a power failure suddenly, can guarantee the safety of television set;

3, with the shared hand-hold type infrared remote controller of television set, need not to allot in addition injection device;

4, press that any key all can start power supply on the hand-held infrared remote controller, on ﹠ off switch (power) starts power supply and start can once be finished if press, and is almost the same convenient with the additional automatic complete closedown socket of infra-red remote control described in the utility model.

Below in conjunction with accompanying drawing and a preferred embodiment the utility model is described in further detail.

Description of drawings

Fig. 1 is the electrical schematic diagram of a specific embodiments of the present utility model;

Fig. 2 receives the electrical schematic diagram of amplifying circuit RD for Fig. 1 middle infrared (Mid-IR);

Fig. 3 is the structural representation of a specific embodiments of the present utility model.

Embodiment

Referring to Fig. 2, it is with special infrared remote control preamplifier IC(μ pc1490 that infrared ray receives amplifying circuit RD) be that core is equipped with infrared receiver tube PH again and resistance R 13, R14, R15 and capacitor C 10, C11, C12 are constituted.Similar special infrared remote control preamplifier all adopts open collector output owing to μ pc1490 and with it, so when infrared receiver tube PH receives the infrared light pulse that is sent by infrared remote controller, the DC potential of the output of μ pc1490 (2 pin) 1～2V that will descend.The utility model utilizes these electrical characteristics of the special infrared remote control preamplifier of this class just, connect the clamper current-limiting circuit (referring to Fig. 1) that constitutes by switching diode D3 and cut-off current R3 series connection at its output, the base stage of positive-negative-positive triode V1 connects and composes a negative pulse clamper amplifier in the other end of this circuit and the automatic complete closedown circuit, amplifies the direct current low-potential signal (referring to Fig. 1) that is received amplifying circuit RD output by infrared ray.

Referring to Fig. 1, in order to improve the negative pulse width that infrared ray receives the direct current low-potential signal that amplifying circuit RD exported, the anti-interference burst pulse of filtering, the utility model receives the output of amplifying circuit RD and meets a high-frequency filter capacitor C4 at infrared ray.

Referring to Fig. 1, automatic complete closedown circuit described in the utility model is improved on the basis that has the automatic complete closedown circuit that picks up load current signal now and is formed, the load current sample circuit that it mainly is made of diode D5, D6 and resistance R 9, the two-stage that is made of triode V3, V1 and peripheral circuit thereof time-delay is constituted with being connected successively by triode V2 and electronic switch that relay J constitutes from latching amplifier.Wherein bear the triode V1 use positive-negative-positive triode that second utmost point amplifies, make it can amplify infrared ray and receive the enabling signal that amplifying circuit is sent here, the realization remote control starts, can amplify the load current signal of sending here by first order amplifier again, realize starting back time-delay self-locking and start back self-locking, charge circuit is provided can also for the RC delay circuit that is made of resistance R 4 and capacitor C 6, general supply is cut off in the back time-delay that realizes shutting down automatically.

Referring to Fig. 1, the utility model is at the output of described negative pulse clamper amplifier and be connected to the buffer starting switch, the error starting signal shorted to earth during with telegram in reply.Described buffer starting switch is the rc-delay circuit that serial connection is made of resistance R 11 and capacitor C 8 series connection on the base stage of triode V4, what repid discharge diode D4 of connection was constituted on the negative pole of capacitor C 8 again.In order to improve switching speed, speed-up capacitor C9 in parallel on the resistance R 11.The delay time constant R11 * C8 of described buffer starting switch must be greater than the delay time constant R4 * C6 of automatic complete closedown circuit.

Referring to Fig. 1, be serially connected with the one-way feed path that constitutes by resistance R 12 and diode D7 series connection on the base stage of the collector electrode of triode V1 and triode V3, this path and triode V3, resistance R 4 and capacitor C 6 one of common formation start the time-delay holding circuit, with the starting impulse signal feedback of triode V1 collector electrode output base stage, the conducting state of triode V1 time-delay self-insurance in capacitor C 6 charging processes to triode V1.Owing to start immediately after television set is closed, power-supply system institute accumulate can not drain in the television set again, so just not have enough big load current to make triode V3 conducting when starting once more, just can not start shooting to provide the sufficiently long time to press on ﹠ off switch with the person yet.Startup time-delay holding circuit described in the utility model promptly is provided with for the user starts again after shutdown immediately, provides the sufficiently long time to press on ﹠ off switch to the user.

Referring to Fig. 1, stabilized voltage power supply described in the utility model is known capacitance decompression half-wave rectifier voltage circuit.Because the operating voltage lower (being generally 5V) of special infrared remote control preamplifier IC, so described D.C. regulated power supply adopts two-way output, lower a road powers to IC.In addition, the resistance R 2 in the described D.C. regulated power supply and the filter capacitor C2 at its two ends and C3 constitute a pi type filter, to improve power supply quality.

Referring to Fig. 3, adopt known method to be installed in the printed board 4 control circuit illustrated in figures 1 and 2, again printed board 4 is contained in the socket 1 of band plug 3.Referring to Fig. 3, the panel of socket 1 is provided with the LED among jack 5, indicator light 2(Fig. 1) and infrared ray absorption hole 6.In order further to improve antijamming capability, infrared ray is taken in hole 6 and is embedded with Red lightscreening plate 7.

Implementation method beyond the utility model is above-mentioned is utilized known technology and is got final product in conjunction with the accompanying drawings.

Below in conjunction with accompanying drawing the course of work of the present utility model and using method are elaborated.

The automatic complete closedown socket of infra-red remote control described in the utility model is inserted in the supply socket, again (referring to Fig. 3) in the attaching plug insertion jack 5 of television set can be used.

Referring to Fig. 1, after civil power is connected, capacitor C 6 is penetrated through triode V1's--base stage and resistance R 4 chargings, make triode V1 output error starting signal, but this moment, capacitor C 8 was also passed through the base of resistance R 11 and triode V4--the emitter-base bandgap grading charging, triode V4 conducting will this moment, triode V1 be exported error starting signal shorted to earth, only remain capacitor C 8 chargings finish triode V4 by the time, The whole control circuit side is in operating state to be made.At this moment, with any key on person's pressing hand-hold type infrared remote controller, the DC potential of 2 pin of the infra-red remote control preamplifier IC 1～2V that promptly descends, this signal is divided into two-way after triode V1 amplifies, one the road delivers to the base stage of triode V2, make its saturation conduction, relay J adhesive power supply, the luminous indication of LED.The base stage of triode V3 is delivered to through resistance R 12 and diode D7 in another road, makes its conducting, and capacitor C 6 is discharged rapidly, feed back the conducting of keeping triode V1, realize starting the time-delay self-insurance, win to the user and raise again the crucial time, promptly be opened in case press down the on ﹠ off switch television set with the person.After the start, because load current is bigger, triode V3 is in conducting state all the time, makes triode V1 continue to keep the conducting self-locking.After television set is closed, load current less (generally having only tens of milliamperes), triode V3 ends, and capacitor C 6 chargings are delayed time, and time-delay finishes back triode V1 and ends, and relay J is thrown off and automatic complete closedown.When starting once more, continue to repeat said process.

When starting, if with the on ﹠ off switch of person's pressing hand-hold type infrared remote controller, about about 1 second, start greatly and start shooting and can once finish, almost the same convenient when not using the utility model.

Claims (4)

1, the automatic complete closedown socket of a kind of infra-red remote control, comprise the control circuit that is located in the socket (1), this circuit comprises D.C. regulated power supply and picks up the automatic complete closedown circuit (D5, D6, V3, V2, V1, J, R4, C6) of load current signal self-locking, it is characterized in that the clamper current-limiting circuit that comprises that also infrared ray receives amplifying circuit (RD) and connected with resistance (R3) and constituted by diode (D3); Output with infrared ray reception amplifying circuit (RD) of described clamper current-limiting circuit is connected, and the base stage of bearing the triode (V1) that amplifies the second level in other end and the automatic complete closedown circuit connects and composes a negative pulse clamper amplifier.

2, the automatic complete closedown socket of a kind of infra-red remote control according to claim 1, it is characterized in that the output of described negative pulse clamper amplifier and be connected to the buffer starting switch, this buffer starting switch is to be connected in series rc-delay circuit (C8, R11) on the base stage of triode (V4), what connection repid discharge diode (D4) was constituted on the negative pole of electric capacity (C8) in this delay circuit again.

3, the automatic complete closedown socket of a kind of infra-red remote control according to claim 1 and 2, serve as in the output that it is characterized in that described negative pulse clamper amplifier and the complete closedown circuit automatically between the base stage of the triode (V3) that the first order amplifies and be serially connected with the one-way feed path of connect and being constituted by resistance (R12) and diode (D7), this path and triode (V3), resistance (R4) and electric capacity (C6) constitute the startup holding circuit of delaying time jointly.

4, the automatic complete closedown socket of a kind of infra-red remote control according to claim 1 is characterized in that described infrared ray receives the output of amplifying circuit (RD) and is connected to filter capacitor (C4).

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