CN211860591U

CN211860591U - Lighting lamp control circuit based on projector

Info

Publication number: CN211860591U
Application number: CN202020603779.7U
Authority: CN
Inventors: 张鑫
Original assignee: Chengdu Zhiying Technology Co ltd
Current assignee: Chengdu Zhiying Technology Co ltd
Priority date: 2020-04-21
Filing date: 2020-04-21
Publication date: 2020-11-03
Anticipated expiration: 2030-04-21

Abstract

The utility model discloses a light control circuit based on projecting apparatus, including the signal transmission circuit unit, signal reception circuit unit and light control circuit unit, the power input total interface of projecting apparatus is connected to the power input end electricity of light control circuit unit, the power incoming end of light is connected to the power output end electricity of light control circuit unit, the signal input part of the signal output part communication connection signal reception circuit unit of signal transmission circuit unit, the signal output part of signal reception circuit unit is connected to the signal input part electricity of light control circuit unit. The utility model discloses can make the projecting apparatus directly get the electricity from the light, need not other wiring, avoid lead wire difficulty and the mixed and disorderly problem of wiring, simultaneously, still realize the independent control of light and projecting apparatus power, very big improvement the convenience of using.

Description

Lighting lamp control circuit based on projector

Technical Field

The utility model relates to a light automatic control technical field, concretely relates to light control circuit based on projecting apparatus.

Background

In recent years, intelligent projection is a new industry, the market is continuously exploded, and the intelligent projection is more and more popular with people due to the advantages of large screen, small volume, low price and no damage to eyes by a reflection light source.

The projection on the market is divided into long-focus projection and short-focus projection (laser television), the projection ratio of the long-focus projection is generally 1.2:1 (one-meter wide picture is put in, and the distance between a projector and a wall surface or a curtain is 1.2 meters), so the optimal distance for installing the long-focus projection is 2-3 meters away from the wall surface or the curtain; the projection of the short-focus projection is 0.3:1, and the short-focus projection can be directly installed on a television cabinet in a living room. However, the selling price of the short-focus projection is more than 1 ten thousand yuan, and the long-focus projection only needs 3 to 4 thousand yuan, so that the long-focus projection occupies 80 percent of the market.

At present, the wiring of the tele projection has the following disadvantages: (1) in a common room, no power socket is reserved at a position 2-3 meters away from a wall surface or a curtain, no matter on the ground or on the ceiling, and if a user wants to use a projector, a power line can only be led from sockets on other wall surfaces, so that the lead is difficult, the wiring is messy, and the use is very inconvenient; (2) although the ceiling can be adopted for installation, the ceiling is installed near a ceiling lamp in a room, and the wiring and the electricity taking are directly carried out from the lamp, so that the problem of leading wires from other sockets is avoided, the electricity taking mode cannot realize the independent control of a projector and a lighting lamp power supply, and the use is also extremely inconvenient.

SUMMERY OF THE UTILITY MODEL

If do not with the help of the light in order to solve the present long burnt projection existence, then lead to the lead wire difficulty, if with the help of the light, then can't realize light and projecting apparatus independent control's problem, the utility model aims to provide a direct electricity of getting from the light avoids the lead wire difficulty, realizes the independent control of light and projecting apparatus power simultaneously, uses the light control circuit that the convenience is high.

The utility model discloses the technical scheme who adopts does:

the utility model provides a light control circuit based on projecting apparatus, include:

a signal transmitting circuit unit for transmitting a lighting lamp switch control signal;

the signal receiving circuit unit is used for receiving a lighting lamp switch control signal;

and a lighting lamp control circuit unit;

the power supply input end of the illuminating lamp control circuit unit is electrically connected with the power supply input main interface of the projector, and the power supply output end of the illuminating lamp control circuit unit is electrically connected with the power supply input end of the illuminating lamp;

the signal output end of the signal transmitting circuit unit is in communication connection with the signal input end of the signal receiving circuit unit, and the signal input end of the lighting lamp control circuit unit is electrically connected with the signal output end of the signal receiving circuit unit and used for switching on or off the electric connection between the lighting lamp and the power supply input main interface according to a lighting lamp switch control signal.

Based on the above disclosure, on one hand, the present invention utilizes the illumination lamp control circuit unit to realize the electrical connection between the illumination lamp power supply access terminal and the projector power supply input main interface, i.e. the projector and the illumination lamp use a total power supply input, but the on-off of the illumination lamp is controlled by the illumination lamp control circuit unit alone, on the other hand, the present invention is further provided with a signal transmitting circuit unit and a signal receiving circuit unit, and the signal receiving circuit unit is electrically connected with the illumination lamp control circuit unit, i.e. the signal transmitting circuit unit and the signal receiving circuit unit are utilized to realize the transmission of the illumination lamp on-off control signal (such as illumination lamp lighting signal or illumination lamp off signal), and the illumination lamp control circuit unit is utilized to turn on or off the electrical connection between the illumination lamp and the power supply input main interface according to, thereby realizing the independent control of the switch of the illuminating lamp. Through the design, the projector can directly get the electricity from the illuminating lamp without additional wiring, so that the problems of difficult lead wires and mixed and disorderly wiring are avoided, meanwhile, the independent control of the illuminating lamp and the projector power supply is realized, and the use convenience is greatly improved.

In one possible design, the signal transmitting circuit unit includes a signal driving sub-circuit and a signal transmitting sub-circuit which are electrically connected in sequence. Based on the above disclosure, the signal driving sub-circuit is used to generate a driving signal (e.g. a user presses a lamp lighting button through the control panel) to the signal transmitting sub-circuit, and the signal transmitting sub-circuit generates a lamp switch control signal according to the received driving signal and transmits the lamp switch control signal to the signal receiving circuit unit.

In one possible design, the signal driving sub-circuit comprises a first STC15W201S type processing chip and a lighting lamp switch key;

the P5.5 pin of the first STC15W201S type processing chip is electrically connected to the light switch button, and the P3.7 pin of the first STC15W201S type processing chip is used as the signal output end of the signal driving sub-circuit and is electrically connected to the signal input end of the signal transmitting sub-circuit.

Based on the above disclosure, the above disclosure discloses a specific circuit structure of the signal driving sub-circuit, and of course, the above disclosed circuit structure is only one kind of circuit for realizing the signal driving sub-circuit.

In one possible design, the signal transmitting sub-circuit comprises an XC4388 type OOK/ASK transmitting chip and a transmitting antenna;

the DIN pin of the XC4388 type OOK/ASK transmitting chip is used as the signal input end of the signal driving sub-circuit and is electrically connected with the signal output end of the signal driving sub-circuit, the RFOUT pin of the XC4388 type OOK/ASK transmitting chip is electrically connected with the transmitting antenna, and the transmitting antenna is used as the signal output end of the signal transmitting circuit unit and is in communication connection with the signal input end of the signal receiving circuit unit.

Based on the above disclosure, the above disclosure discloses a specific circuit structure of the signal transmitting sub-circuit, and of course, the above disclosed circuit structure is only one kind of circuit for realizing the signal transmitting sub-circuit.

In one possible design, an LC filter sub-circuit is further arranged between the RFOUT pin of the XC4388 type OOK/ASK transmitting chip and the transmitting antenna.

Based on the above disclosure, by setting the LC filter sub-circuit, the interference signal can be suppressed, and the accurate transmission of the lighting lamp switch control signal can be ensured.

In one possible design, the signal receiving circuit unit comprises an XC4366DL ASK/OOK receiving chip and a receiving antenna;

the receiving antenna is used as a signal input end of the signal receiving circuit unit and is in communication connection with a signal output end of the signal transmitting circuit unit, the receiving antenna is also electrically connected with an ANT pin of an XC4366DL ASK/OOK receiving chip, and a DO pin of the XC4366DL ASK/OOK receiving chip is used as a signal output end of the signal receiving circuit unit and is electrically connected with a signal input end of the illuminating lamp control circuit unit.

Based on the above disclosure, the specific circuit structure of the signal receiving circuit unit is disclosed above, but of course, the circuit structure disclosed above is only one type for realizing the function of the signal receiving circuit unit.

In one possible design, the lighting lamp control circuit unit comprises a second STC15W201S type processing chip, a triode, and a JDQ2501 type relay;

a P3.7 pin of the second STC15W201S type processing chip is used as a signal input end of the illuminating lamp control circuit unit and is electrically connected with a signal output end of the signal receiving circuit unit;

the P5.5 pin of the second STC15W201S type processing chip is electrically connected with the base electrode of the triode, and the emitter electrode of the triode is grounded;

the collector electrode of the triode is respectively and electrically connected with the 2 pin of the JDQ2501 relay and the anode of the voltage stabilizing diode, and the cathode of the voltage stabilizing diode and the 5 pin of the JDQ2501 relay are respectively and electrically connected with a 5V direct-current power supply;

the 1 pin of JDQ2501 type relay is regarded as the power input end of lighting lamp control circuit unit, the power input of electric connection projecting apparatus always interface, the 4 pins of JDQ2501 type relay are regarded as the power output end of lighting lamp control circuit unit, the power incoming end of electric connection light.

Based on the disclosure, the specific circuit structure of the lighting lamp control circuit unit is disclosed in the above, that is, the P5.5 pin of the second STC15W201S type processing chip is used to output high and low levels to control the on and off of the triode, so as to operate the relay, and the electrical connection between the lighting lamp and the power input main interface is switched on or off by controlling the on and off of the relay, so as to realize the individual control of the lighting lamp. Of course, the above disclosed circuit configuration is only one of the illumination lamp control circuit units.

In one possible design, the projector further comprises a power conversion circuit unit, wherein an input end of the power conversion circuit unit is electrically connected with a power input main interface of the projector, the power conversion circuit unit is provided with a 5V direct current power supply output end and a 19V direct current power supply output end,

5 pins of the JDQ2501 relay are electrically connected with the 5V direct-current power supply output end, and the 19V direct-current power supply output end is used as an actual power supply port of the projector.

In one possible design, the signal receiving circuit unit further comprises a DC-DC voltage reduction circuit unit, wherein an input end of the DC-DC voltage reduction circuit unit is electrically connected to the 5V direct-current power output end, an output end of the DC-DC voltage reduction circuit unit outputs 3.3V direct-current voltage, and the input end of the DC-DC voltage reduction circuit unit is electrically connected to the power supply ends of the second STC15W201S type processing chip and the signal receiving circuit unit, respectively.

In one possible design, the projector power supply further comprises an infrared switch control circuit unit for controlling the on-off of the projector power supply, wherein an output end of the infrared switch control circuit unit is electrically connected with the P1.4 pin of the second STC15W201S type processing chip, and the P1.2 pin of the second STC15W201S type processing chip is electrically connected with the 19V dc power supply output end.

Based on the above disclosure, the infrared switch control circuit unit sends the projector switch signal to the second STC15W201S type processing chip, i.e. the switch control of the projector power supply can be realized through the P1.2 pin of the second STC15W201S type processing chip.

The utility model has the advantages that:

(1) the utility model relates to a light control circuit based on projecting apparatus, the utility model discloses can make the projecting apparatus directly get the electricity from the light, need not other wiring, avoid lead wire difficulty and the mixed and disorderly problem of wiring, simultaneously, still realize the independent control of light and projecting apparatus power, very big improvement the convenience of using.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a specific circuit diagram of a signal transmitting circuit unit provided by the present invention.

Fig. 2 is a specific circuit diagram of the signal driving sub-circuit provided by the present invention.

Fig. 3 is a specific circuit diagram of the signal transmitting sub-circuit provided by the present invention.

Fig. 4 is a specific circuit diagram of a signal receiving circuit unit provided by the present invention.

Fig. 5 is a specific circuit diagram of the lighting lamp control circuit unit provided by the present invention.

Fig. 6 is a specific circuit diagram of the DC-DC voltage reduction circuit unit provided by the present invention.

Fig. 7 is a specific circuit diagram of the infrared switch control circuit unit provided by the present invention.

Fig. 8 is a control block diagram of the lighting lamp control circuit provided by the present invention.

Detailed Description

The invention will be further described with reference to the accompanying drawings and specific embodiments. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. Specific structural and functional details disclosed herein are merely illustrative of example embodiments of the invention. The present invention may, however, be embodied in many alternate forms and should not be construed as limited to the embodiments set forth herein.

It will be understood that, although the terms first, second, etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. For example, a first element could be termed a second element, and, similarly, a second element could be termed a first element, without departing from the scope of example embodiments of the present invention.

It should be understood that, for the term "and/or" as may appear herein, it is merely an associative relationship that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, B exists alone, and A and B exist at the same time; for the term "/and" as may appear herein, which describes another associative object relationship, it means that two relationships may exist, e.g., a/and B, may mean: a exists independently, and A and B exist independently; in addition, for the character "/" that may appear herein, it generally means that the former and latter associated objects are in an "or" relationship.

It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments of the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises," "comprising," "includes" and/or "including," when used herein, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, numbers, steps, operations, elements, components, and/or groups thereof.

Example one

As shown in fig. 1 to 8, the illumination lamp control circuit based on a projector provided in this embodiment includes:

and the signal transmitting circuit unit is used for transmitting a lighting lamp switch control signal.

And the signal receiving circuit unit is used for receiving the lighting lamp switch control signal.

And an illumination lamp control circuit unit.

The power input end of the lighting lamp control circuit unit is electrically connected with the power input main interface of the projector, and the power output end of the lighting lamp control circuit unit is electrically connected with the power input end of the lighting lamp.

As shown in fig. 1 to 8, the following describes specific circuits of the projector-based illumination lamp control circuit:

first, the operating principle of the lighting lamp control circuit is explained: the utility model utilizes the lighting lamp control circuit unit to realize the electric connection between the lighting lamp power supply access end and the projector power supply input main interface, namely, the projector and the illuminating lamp use a total power supply input, but the on-off of the illuminating lamp is controlled by the illuminating lamp control circuit unit alone, the signal source of the lighting lamp control circuit unit is from the signal transmitting circuit unit and the signal receiving circuit unit, that is, the signal transmitting circuit unit transmits a lamp switch control signal (such as a lamp lighting button or a turn-off button pressed by a user on the control panel) to the signal receiving circuit unit, the signal receiving circuit unit transmits the lighting lamp switch control signal to the lighting lamp control circuit unit, and the lighting lamp control circuit unit switches on or cuts off the electric connection between the lighting lamp and the power supply main input interface according to the received lighting lamp switch control signal, so that the lighting lamp is controlled independently.

As shown in fig. 1, fig. 2 and fig. 3, the circuit composition of the signal transmitting circuit unit is explained in detail as follows:

in this embodiment, the signal transmitting circuit unit may include, but is not limited to: the signal driving sub-circuit is used for generating a driving signal to the signal transmitting sub-circuit, and then the signal transmitting sub-circuit generates a control signal of the lighting lamp control switch according to the driving signal. In the present embodiment, the driving signal is generated after the user presses an illumination lamp lighting button or a turn-off button.

As shown in fig. 2, in the present embodiment, the exemplary signal driving sub-circuit may include, but is not limited to: a first STC15W201S type processing chip U854 and a lighting lamp switch key K1.

The connection relationship of the devices is as follows: the P5.5 pin of the first STC15W201S type processing chip U854 is electrically connected with the illuminating lamp switch key K1, and the P3.7 pin of the first STC15W201S type processing chip U854 is used as the signal output end of the signal driving sub-circuit and is electrically connected with the signal input end of the signal transmitting sub-circuit.

The working principle of the driving sub-circuit is as follows: a user can press the illuminating lamp switch key K1 to generate an electric signal (namely a driving signal), and the electric signal is sent to the signal transmitting sub-circuit through the first STC15W201S type processing chip U854 to generate an illuminating lamp switch control signal.

In this embodiment, the sample electric signal is converted into a signal of one byte size by the first STC15W201S type processing chip U854, and sent to the signal transmitting sub-circuit.

In this embodiment, the P3.2 and P3.1 pins of the first STC15W201S type processing chip U854 are further electrically connected with a program download interface, so that the circuit can be debugged according to actual needs of a user.

As shown in fig. 3, in the present embodiment, the signal transmitting sub-circuit may include, but is not limited to: XC4388 OOK/ASK transmitting chip U27 and transmitting antenna J3.

The connection relation of the devices is as follows: the DIN pin of the XC4388 type OOK/ASK emission chip U27 is used as the signal input end of the signal driving sub circuit, and is electrically connected with the signal output end of the signal driving sub circuit (namely, is electrically connected with the P3.7 tube of the first STC15W201S type processing chip U854), the RFOUT pin of the XC4388 type OOK/ASK emission chip U27 is electrically connected with the emission antenna J3, and the emission antenna J3 is used as the signal output end of the signal emission circuit unit and is in communication connection with the signal input end of the signal receiving circuit unit.

The working principle of the signal transmitting sub-circuit is as follows: a DIN pin of an XC4388 type OOK/ASK transmission chip U27 receives an electrical signal sent by a first STC15W201S type processing chip U854, OOK (On-Off-Keying, binary On-Off Keying)/ASK (Amplitude Shift Keying) is modulated into a sine wave (the sine wave is an illumination lamp On-Off control signal), and the sine wave is sent through a transmission antenna J3.

In this embodiment, for example, the XC4388 type OOK/ASK transmitting chip U27 may modulate an electrical signal sent by the first STC15W201S type processing chip U854 to a 433M frequency sine wave (this frequency band is publicly used by the country, is mainly applied to smart home control, and certainly may also be an open frequency band approved by other countries).

In the present embodiment, in order to reduce the interference of other signals to the sine wave (i.e. the lighting lamp switch control signal), an LC filter sub-circuit is further disposed between the RFOUT pin of the XC4388 type OOK/ASK transmitting chip U27 and the transmitting antenna J3. As shown in fig. 3, the LC filter sub-circuit includes a capacitor C229, a capacitor C84 and an inductor L3, and the connection relationship between the LC filter sub-circuit and the XC4388 type OOK/ASK transmitting chip U27 and the transmitting antenna J3 can be seen in fig. 3.

In this embodiment, the signal transmitting circuit unit can be integrated on a household 86-type panel or a hand-held remote controller, and if the signal transmitting circuit unit is integrated on the household 86-type panel, the signal transmitting circuit unit can be pasted anywhere in a room by using a double-sided adhesive tape, and can also be fixedly installed on a wall by using screws.

In this embodiment, the power supplied to the XC4388 type OOK/ASK transmitting chip U27 and the first STC15W201S type processing chip U854 may be, but is not limited to: piezoelectric ceramic power generation piece, 3V button cell or 2 serial No. 7 batteries.

After the sine wave is transmitted by the transmitting antenna J3, it can be received by the signal receiving circuit unit, as shown in fig. 4, in this embodiment, the signal receiving circuit unit can include but is not limited to: XC4366DL ASK/OOK receiving chip U28 and receiving antenna J2.

Wherein, the connection relation of the above-mentioned devices is: the receiving antenna J2 is used as a signal input end of the signal receiving circuit unit, and is in communication connection with a signal output end of the signal transmitting circuit unit, namely, the receiving antenna J3, the receiving antenna J2 is also electrically connected with an ANT pin of the XC4366DL type ASK/OOK receiving chip U28, and a DO pin of the XC4366DL type ASK/OOK receiving chip U28 is used as a signal output end of the signal receiving circuit unit and is electrically connected with a signal input end of the lighting lamp control circuit unit.

Through the design, after being received by the receiving antenna J2, the sine wave can be demodulated in an XC4366DL ASK/OOK receiving chip U28, and the lighting lamp switch control signal is transmitted to the lighting lamp control circuit unit through a DO pin. In this embodiment, the lamp switch control signal is demodulated and then converted into a pulse signal.

In this embodiment, an LC filter sub-circuit is also provided between the receiving antenna J2 and the ANT pin of the XC4366DL ASK/OOK receiving chip U28, so that the effect of reducing signal interference can be achieved.

And finally, the lighting lamp control circuit unit can switch on or switch off the electric connection between the lighting lamp and the power supply main input interface according to the pulse signal sent by the XC4366DL ASK/OOK receiving chip U28.

As shown in fig. 5, in this embodiment, the lighting lamp control circuit unit may include, but is not limited to: a second STC15W201S type processing chip U856, a triode Q25 and a JDQ2501 type relay J1.

The connection relationship of the above devices is as follows:

a P3.7 pin of the second STC15W201S processing chip U856 is used as a signal input end of the illumination lamp control circuit unit, and is electrically connected to a signal output end of the signal receiving circuit unit, that is, electrically connected to a DO pin of an XC 433566 4366DL ASK/OOK receiving chip U28, a P5.5 pin of the second STC15W201S processing chip U856 is electrically connected to a base of a triode Q25, an emitter of the triode Q25 is grounded, a collector of the triode Q25 is electrically connected to a 2 pin of a JDQ2501 relay J1 and an anode of a zener diode D1, and a cathode of the zener diode D1 and a 5 pin of the JDQ2501 relay J1 are electrically connected to a 5V dc power supply, respectively; the 1 pin of JDQ2501 type relay J1 is as the power input end of light control circuit unit, the power input of electric connection projecting apparatus is always connected, and the 4 pins of JDQ2501 type relay J1 are as the power output end of light control circuit unit, the power incoming end of electric connection light.

Through the design, the pulse signal sent by the XC4366DL ASK/OOK receiving chip U28 is received by the P3.7 pin of the second STC15W201S processing chip U856, the received pulse signal is paired with the internal EEPROM space, the paired pulse signal is compared with the stored data, and when the paired pulse signal is consistent with the stored data, the second STC15W201S processing chip U856 controls the P5.5 pin to output a high level (the P5.5 defaults to a low level). The output high level prompts the emitter and the collector of the triode Q25 to be conducted, so that the JDQ2501 relay J1 works, the JDQ2501 relay J1 is switched from the off state to the on state, the electric connection between the illuminating lamp and the power input main interface is conducted, and the illuminating lamp is lightened.

If the illuminating lamp is turned off, the principle is the same as that of the illuminating lamp when the illuminating lamp is turned on, namely the second STC15W201S type processing chip U856 receives a pulse signal, a P5.5 pin is changed into low level, the triode Q25 is cut off, and then the JDQ2501 type relay J1 is changed into a turn-off state from a turn-on state, so that the illuminating lamp is turned off.

In this embodiment, the power input bus interface of the projector is electrically connected to the household power supply, that is, as shown in fig. 5, pin 1 of JDQ2501 type relay J1 is connected to the live wire.

In this embodiment, the P3.1 pin and the P3.0 pin of the second STC15W201S type processing chip U856 are also electrically connected to a program download interface for implementing circuit debugging. Meanwhile, the P3.2 rubber rolling is also connected with a pairing key K2 for realizing the pairing of the signal generation circuit unit and the signal receiving circuit unit, and an LED lamp is also arranged for prompting (not shown in the figure).

In this embodiment, the pairing operation is:

when the pairing key K22 seconds are pressed all the time (the key is not pressed, the key is in a high level, and the key is pressed, the key is in a low level), the P3.2 pin of the second STC15W201S type processing chip U586 receives a low level signal of the key, program judgment is carried out in the internal EEPROM space, if the internal EEPROM space (1 byte space is set by the program to specially store SN data (serial number)) of an opposite transmitting singlechip, the LED lamp controlled by the second STC15W201S type processing chip U586 flickers slowly. Telling the user that pairing can be done. If the data stored in the EEPROM space is paired, the singlechip can not control the LED to flicker.

When the LED lamp flickers, a pairing key of a signal transmitting unit circuit is pressed (the first STC15W201S type processing chip U854 is also connected with a corresponding pairing key, which is not shown in figure 1), the signal transmitting circuit unit sends SN data, the SN data is received by a signal receiving circuit unit and is stored in an EEPROM space inside the second STC15W201S type processing chip U586 (power-down data is not lost). After the signal receiving circuit unit succeeds in data, the LED lamp can flash rapidly. And informing the user of successful pairing. The pairing work is generally automatically finished before the projector is produced and leaves a factory, and the operation of a user is not needed.

Through signal transmission circuit unit, signal receiving circuit unit and light control circuit unit, can realize the independent control of light switch, great improvement convenience of using.

In this embodiment, a power conversion circuit unit is further provided to convert a 220V ac power supply connected to the power input bus interface into a 19V dc power supply and a 5V dc power supply, which respectively supply power to the projector and the JDQ2501 type relay J1. In this embodiment, the power conversion circuit unit is an existing circuit, and can be implemented by an existing buck chip.

Meanwhile, the power supply voltages of the second STC15W201S processing chip U586 and the XC4366DL ASK/OOK receiving chip U28 are both 3.3V, so in this embodiment, a DC-DC voltage reduction circuit unit is further provided, wherein an input end of the DC-DC voltage reduction circuit unit is electrically connected to the 5V DC power output end, and is configured to reduce the 5V DC voltage to a 3.3V DC voltage, that is, the output end of the DC-DC voltage reduction circuit unit outputs a 3.3V DC voltage, and is electrically connected to the power supply ends of the second STC15W201S processing chip U856 and the signal receiving circuit unit, respectively.

In this embodiment, the DC-DC voltage reduction circuit unit can be, but is not limited to: the concrete circuit structure of the SY8120E1 type voltage drop DC-DC conversion chip and the peripheral circuit thereof can be seen in FIG. 6.

In addition, in this embodiment, in order to more conveniently control the power on/off of the projector, an infrared switch control circuit unit is further provided, as shown in fig. 7, an output terminal of the infrared switch control circuit unit is electrically connected to the P1.4 pin of the second STC15W201S type processing chip U856, and the P1.2 pin of the second STC15W201S type processing chip U856 is electrically connected to the 19V dc power supply output terminal.

The working principle of the infrared switch control circuit unit is as follows: the infrared switch control circuit unit sends an infrared emission signal to the second STC15W201S type processing chip, and the second STC15W201S type processing chip performs on-off control through the GPIO port after receiving the infrared emission signal, namely performs on-off control on the 19V direct current power supply through the P1.2 pin.

In this embodiment, for example, the infrared switch control circuit unit may be integrated on the projector remote controller, and generate the infrared emission signal using the key.

In this embodiment, the chip model that discloses in each circuit is only one of realizing corresponding circuit function, and any chip that can realize this embodiment circuit function is all in the utility model discloses a protection scope.

To sum up, the utility model provides a light control circuit based on projecting apparatus has following technological effect:

(1) the utility model discloses can make the projecting apparatus directly get the electricity from the light, need not other wiring, avoid lead wire difficulty and the mixed and disorderly problem of wiring, simultaneously, still realize the independent control of light and projecting apparatus power, very big improvement the convenience of using.

The present invention is not limited to the above-mentioned optional embodiments, and any other products in various forms can be obtained by anyone under the teaching of the present invention, and any changes in the shape or structure thereof, all the technical solutions falling within the scope of the present invention, are within the protection scope of the present invention.

Claims

1. A projector-based lamp control circuit, comprising:

and a lighting lamp control circuit unit;

2. A projector-based illumination lamp control circuit according to claim 1, characterized in that: the signal transmitting circuit unit comprises a signal driving sub-circuit and a signal transmitting sub-circuit which are electrically connected in sequence.

3. A projector-based illumination lamp control circuit according to claim 2, characterized in that: the signal driving sub-circuit comprises a first STC15W201S type processing chip (U854) and an illuminating lamp switch button (K1);

the P5.5 pin of the first STC15W201S type processing chip (U854) is electrically connected with the illuminating lamp switch key (K1), and the P3.7 pin of the first STC15W201S type processing chip (U854) is used as the signal output end of the signal driving sub-circuit and is electrically connected with the signal input end of the signal transmitting sub-circuit.

4. A projector-based illumination lamp control circuit according to claim 2, characterized in that: the signal transmitting sub-circuit comprises an XC4388 type OOK/ASK transmitting chip (U27) and a transmitting antenna (J3);

the DIN pin of the XC4388 type OOK/ASK transmitting chip (U27) is used as the signal input end of the signal driving sub circuit and is electrically connected with the signal output end of the signal driving sub circuit, the RFOUT pin of the XC4388 type OOK/ASK transmitting chip (U27) is electrically connected with the transmitting antenna (J3), and the transmitting antenna (J3) is used as the signal output end of the signal transmitting circuit unit and is in communication connection with the signal input end of the signal receiving circuit unit.

5. A projector-based illumination lamp control circuit according to claim 4, characterized in that: an LC filter sub-circuit is further arranged between an RFOUT pin of the XC4388 type OOK/ASK transmitting chip (U27) and the transmitting antenna (J3).

6. A projector-based illumination lamp control circuit according to claim 1, characterized in that: the signal receiving circuit unit comprises an XC4366DL ASK/OOK receiving chip (U28) and a receiving antenna (J2);

the receiving antenna (J2) is used as a signal input end of the signal receiving circuit unit and is in communication connection with a signal output end of the signal transmitting circuit unit, the receiving antenna (J2) is also electrically connected with an ANT pin of an XC4366DL type ASK/OOK receiving chip (U28), and a DO pin of the XC4366DL type ASK/OOK receiving chip (U28) is used as a signal output end of the signal receiving circuit unit and is electrically connected with a signal input end of the illuminating lamp control circuit unit.

7. A projector-based illumination lamp control circuit according to claim 1, characterized in that: the lighting lamp control circuit unit comprises a second STC15W201S type processing chip (U856), a triode (Q25) and a JDQ2501 type relay (J1);

a pin P3.7 of the second STC15W201S type processing chip (U856) is used as a signal input end of the illuminating lamp control circuit unit and is electrically connected with a signal output end of the signal receiving circuit unit;

the P5.5 pin of the second STC15W201S type processing chip (U856) is electrically connected with the base electrode of the triode (Q25), and the emitter electrode of the triode (Q25) is grounded;

the collector electrode of the triode (Q25) is respectively and electrically connected with the 2 pin of the JDQ2501 relay (J1) and the anode of the zener diode (D1), and the cathode of the zener diode (D1) and the 5 pin of the JDQ2501 relay (J1) are respectively and electrically connected with a 5V direct-current power supply;

the 1 pin of JDQ2501 type relay (J1) is as the power input end of light control circuit unit, the power input bus interface of electric connection projecting apparatus, the 4 pins of JDQ2501 type relay (J1) are as the power output end of light control circuit unit, the power incoming end of electric connection light.

8. A projector-based illumination lamp control circuit according to claim 7, wherein: the projector also comprises a power supply conversion circuit unit, wherein the input end of the power supply conversion circuit unit is electrically connected with a power supply input main interface of the projector, the power supply conversion circuit unit is provided with a 5V direct-current power supply output end and a 19V direct-current power supply output end,

the 5 pins of the JDQ2501 relay (J1) are electrically connected with the 5V direct-current power supply output end, and the 19V direct-current power supply output end is used as an actual power supply port of the projector.

9. A projector-based illumination lamp control circuit according to claim 8, wherein: the DC-DC voltage reduction circuit unit is characterized by further comprising a DC-DC voltage reduction circuit unit, wherein the input end of the DC-DC voltage reduction circuit unit is electrically connected with the 5V direct-current power output end, the output end of the DC-DC voltage reduction circuit unit outputs 3.3V direct-current voltage, and the DC-DC voltage reduction circuit unit is electrically connected with the power supply ends of the second STC15W201S type processing chip (U856) and the signal receiving circuit unit respectively.

10. A projector-based illumination lamp control circuit according to claim 8, wherein: the projector power supply further comprises an infrared switch control circuit unit for controlling the on-off of a projector power supply, wherein the output end of the infrared switch control circuit unit is electrically connected with the P1.4 pin of the second STC15W201S type processing chip (U856), and the P1.2 pin of the second STC15W201S type processing chip (U856) is electrically connected with the 19V direct-current power supply output end.