CN211090079U

CN211090079U - Desk lamp control circuit

Info

Publication number: CN211090079U
Application number: CN201922401403.8U
Authority: CN
Inventors: 卢泰; 涂伟杰; 陈志鹏
Original assignee: Xiamen Innov Charge Source Electronics Co ltd
Current assignee: Xiamen Innov Charge Source Electronics Co ltd
Priority date: 2019-12-27
Filing date: 2019-12-27
Publication date: 2020-07-24
Anticipated expiration: 2029-12-27

Abstract

A desk lamp control circuit comprises a switching power supply and a photoelectric switch, and is characterized by further comprising a trigger sub-circuit and a detection sub-circuit, wherein the trigger sub-circuit, the detection sub-circuit, the switching power supply and the photoelectric switch are mounted on a circuit board and are connected through circuit board wiring. The novel desk lamp does not need manual control in use, when the desk lamp is turned on and turned off, the handle is spaced by dozens of centimeters to temporarily block the front of the detecting head of the photoelectric switch, so that the desk lamp can work when power is on or does not work when power is off under the action of the internal circuit of the trigger sub-circuit; through the adoption of the electric shock lamp, the electric shock probability of a user is reduced, convenience is brought to the user, and the grade of a table lamp product is improved. This is novel in, can also reduce to the certain degree at the inside battery of desk lamp when, the very first time gives the user suggestion through surveying the sub-circuit, has prevented that follow-up power failure from adopting the battery power supply, and the battery electric power storage brings the influence to in-service use too little. Based on the above, this is novel has good application prospect.

Description

Desk lamp control circuit

Technical Field

The utility model relates to a desk lamp circuit field, especially a desk lamp control circuit.

Background

The desk lamp is an electrical device widely used, and in the prior art, the mode of controlling the desk lamp to work mainly comprises touch operation and manual turning on or turning off of a power switch. The manual operation can bring inconvenience for people and is also not favorable to promoting the grade of product, thereby the touch piece touch operation has the probability that leads to the touch piece electric leakage to shock the user, and it also needs actual hand contact operation simultaneously, can give people similarly and bring inconvenience also is not favorable to promoting the grade of product. The existing desk lamp is powered by a mode of simultaneously using a storage battery and 220V power supply, but the storage battery of the desk lamp does not have a practical matched voltage prompting circuit, so that when the storage battery is used for supplying power, the continuous use of the desk lamp cannot be effectively guaranteed after the voltage of the storage battery is reduced.

SUMMERY OF THE UTILITY MODEL

In order to overcome current desk lamp touch operation and the manual operation mode of opening or closing switch, give people the inconvenience of bringing, be unfavorable for promoting the grade of product, and have the problem that leads to the electric shock probability, and because the desk lamp that adopts battery powered can not give the suggestion to the user when the electric energy reduces to a certain extent, can bring the drawback of influence to follow-up continued use, the utility model provides a working method through photoelectric switch non-contact control desk lamp has reduced the probability of electric shock, and brought the facility for the user, has promoted desk lamp product grade, can also reduce when the certain degree at the inside battery of desk lamp, the very first time gives a desk lamp control circuit of user's suggestion.

The utility model provides a technical scheme that its technical problem adopted is:

a desk lamp control circuit comprises a switching power supply and a photoelectric switch, and is characterized by also comprising a trigger sub-circuit and a detection sub-circuit, wherein the trigger sub-circuit, the detection sub-circuit, the switching power supply and the photoelectric switch are arranged on a circuit board and are connected through circuit board wiring; the two ends of the power supply input of the switching power supply are respectively connected with two poles of an alternating current 220V power supply, and the two ends of the power supply output of the switching power supply are respectively connected with the two ends of the photoelectric switch, the trigger sub-circuit, the detection sub-circuit and the power supply input of the storage battery in the desk lamp; the signal output end of the photoelectric switch is connected with the signal input end of the trigger sub-circuit; one pole of the 220V alternating current power supply is connected with the input end of the control power supply of the trigger sub-circuit, and the output end of the control power supply of the trigger control sub-circuit, the other pole of the 220V alternating current power supply and the two ends of the bulb power supply input of the desk lamp are respectively connected.

Further, the switching power supply is an alternating current to direct current switching power supply.

Further, the photoelectric switch is a reflective photoelectric switch sensor.

Further, the trigger sub-circuit comprises a double-D trigger integrated circuit with the type of CD4013, a resistor, a relay and an NPN triode, wherein the double-D trigger integrated circuit is connected through a circuit board in a wiring mode, a positive power supply input end 14 pin of the double-D trigger integrated circuit is connected with a positive power supply input end of the relay, a clock signal input end 3 pin of the double-D trigger integrated circuit is connected with one end of a second resistor, an inverted code output end 2 pin and a data input end 5 pin of the double-D trigger integrated circuit are connected, a negative power supply input end 7 pin, a direct reset end 4 pin and a direct position end 6 pin of the double-D trigger integrated circuit are connected with an emitting electrode of the NPN triode, an original code output end 1 pin of the double-D trigger integrated circuit is connected with one end of the first resistor, the other end of the first resistor is connected with a.

Furthermore, the detection sub-circuit comprises a resistor, an NPN triode and a sounder B, wherein the resistor, the NPN triode and the sounder B are connected through a circuit board in a wiring mode, one end of a first resistor is connected with one end of a second resistor and the positive power input end of the sounder, the other end of the first resistor is connected with the base electrode of the first NPN triode, the collector electrode of the first NPN triode is connected with the base electrode of the second NPN triode and the other end of the second resistor, the collector electrode of the second NPN triode is connected with the negative power input end of the sounder, and the emitting electrodes of the two NPN.

The utility model has the advantages that: the novel desk lamp does not need manual control in use, when the desk lamp is turned on and turned off, the handle is spaced by dozens of centimeters to temporarily block the front of the detecting head of the photoelectric switch, so that the desk lamp can work when power is on or does not work when power is off under the action of the internal circuit of the trigger sub-circuit; through the adoption of the electric shock lamp, the electric shock probability of a user is reduced, convenience is brought to the user, and the grade of a table lamp product is improved. This is novel in, can also reduce to the certain degree at the inside battery of desk lamp when, the very first time gives the user suggestion through surveying the sub-circuit, has prevented that follow-up power failure from adopting the battery power supply, and the battery electric power storage brings the influence to in-service use too little. Based on the above, this is novel has good application prospect.

Drawings

The invention will be further explained with reference to the drawings and examples.

Fig. 1 is a block diagram of the present invention.

Fig. 2 is a circuit diagram of the present invention.

Detailed Description

As shown in fig. 1, a desk lamp control circuit comprises a switching power supply 1, a photoelectric switch 2, a trigger sub-circuit 3 and a detection sub-circuit 4, wherein the trigger sub-circuit 3, the detection sub-circuit 4, the switching power supply 1 and the photoelectric switch 1 are mounted on a circuit board, and are connected through circuit board wiring, and the circuit board is mounted inside a desk lamp shell.

As shown in FIG. 2, the switching power supply U1 is a finished product of a brand-three-sensitive, model GPA20A AC 220V-to-13V DC switching power supply with power of 20W. The photoelectric switch U3 is a finished product of a laser diffuse reflection photoelectric switch sensor with brand name and model MT-J18-D50NK, the photoelectric switch is provided with two

power input ends

1 and 2 pins and an anode output end 3 pin, after the photoelectric switch is powered on, an infrared light beam emitted by a straight line from a transmitting head of a front-end detecting head is blocked by an article, a receiving head at the front end of the detecting head receives the back high-level output end 3 pins to output the anode power, when no article is blocked, the anode power is not output, the farthest detecting distance is 50 cm, the rear end of a shell of the photoelectric switch is provided with an adjusting knob, after the adjusting knob is adjusted leftwards, the detecting distance of the photoelectric switch becomes close, and after the adjusting knob is adjusted rightwards, the detecting distance becomes far, after the adjusting, the detecting distance is about 45 cm, and the detecting head of the photoelectric switch is positioned outside an. The trigger sub-circuit comprises a double-D trigger integrated circuit U2 with the model number of CD4013, resistors R1 and R2, a relay K, NPN, a triode Q1, the circuit board is connected through wiring, a pin of a positive power supply input end 14 of the double-D triggering integrated circuit is connected with a positive power supply input end of the relay K, a pin 3 of a clock signal input end of the double-D triggering integrated circuit U2 is connected with one end of a second resistor R2, a pin 2 of an inverted code output end and a pin 5 of a data input end of the double-D triggering integrated circuit U2 are connected, a pin 7 of a negative power supply input end, a pin 4 of a direct reset end and a pin 6 of a direct set end of the double-D triggering integrated circuit U2 are connected with an emitter of an NPN triode Q1, a pin 1 of a primary code output end of the double-D triggering integrated circuit U2 is connected with one end of a first resistor 5639, the other end of the first resistor R1 is connected with a base of an NPN triode Q1. The detection sub-circuit comprises resistors R3 and R4, NPN triodes Q2 and Q3 and a sounder B, wherein the resistors are connected through circuit board wiring, one end of the resistor R3 is connected with one end of the resistor R4 and the positive power input end of the sounder B, the other end of the resistor R3 is connected with the base electrode of a first NPN triode Q2, the collector electrode of the first NPN triode Q2 is connected with the base electrode of a second NPN triode Q3 and the other end of the resistor R4, the collector electrode of a second NPN triode Q3 is connected with the negative power input end of the sounder B, and the emitter electrodes of the two NPN triodes Q2 and Q3 are connected.

As shown in fig. 2, two

ends

1 and 2 of a power input of a switching power supply U1 are respectively connected with two poles of an alternating current 220V power supply, two

ends

3 and 4 of a power output of a switching power supply U1 are respectively connected with two

ends

1 and 2 of a power input of a photoelectric switch U3, two ends of a power input of a trigger sub circuit are respectively connected with a positive power input end of a relay K and an emitting electrode of an NPN triode Q1, two ends of a power input of a detection sub circuit are respectively connected with one end of a resistor R3 and an emitting electrode of an NPN triode Q2, and two ends of a power input; the 3 pins of the signal output end of the photoelectric switch U3 are connected with the other end of the trigger sub circuit signal input end resistor R2; one pole of the 220V alternating current power supply is connected with the input end of a control power supply of the trigger sub-circuit relay K, and the normally open contact end of the trigger control sub-circuit relay K, the other pole of the 220V alternating current power supply and the input ends of the bulb H power supply of the desk lamp are respectively connected.

As shown in fig. 2, after the 220V ac power enters

pins

1 and 2 of the switching power supply U1,

pins

3 and 4 of the switching power supply U1 will output a stable 13V dc power to enter the two terminals of the power input of the photoelectric switch U3, the trigger sub-circuit and the detection sub-circuit, so that the photoelectric switch U3, the trigger sub-circuit and the detection sub-circuit are in an electrically-powered working state. When a user needs to turn on the desk lamp H, the hand temporarily blocks infrared light emitted by an emitting head of a photoelectric switch U3 at a certain distance, then, a high level output by a pin 3 of the photoelectric switch U3 is subjected to voltage reduction and current limitation through a resistor R2 and enters a pin 3 of a double-D trigger integrated circuit U2, a bistable state trigger circuit formed by the double-D trigger integrated circuit U2 overturns once under the action of an internal circuit of the double-D trigger integrated circuit U2, a pin 1 of the double-D trigger integrated circuit can always output a high level and is subjected to voltage reduction and current limitation through a resistor R1 and enters a base electrode of an NPN triode Q1, and then the NPN triode Q1 is conducted, a collector of the NPN triode Q39; because the positive power supply input end of the relay K is connected with the 3-pin of the stabilized voltage power supply U1, the relay K can be electrified to close the control power supply input end and the normally open contact end; because one pole of the 220V alternating current power supply is connected with the input end of the relay K control power supply, and the normally open contact end of the relay K, the other pole of the 220V alternating current power supply and the input end of the bulb H power supply of the desk lamp are respectively connected, the desk lamp H can be powered and emit light at the moment. When a user needs to turn off the desk lamp H, the hand temporarily blocks infrared light emitted by an emitting head of the photoelectric switch U3 at a certain distance again, so that a high level is output by a pin 3 of the photoelectric switch U3 again, the high level is reduced in voltage and limited in current through the resistor R2 and enters a pin 3 of the double-D trigger integrated circuit U2, the double-D trigger integrated circuit U2 turns over once again under the action of an internal circuit of the double-D trigger integrated circuit U2, a pin 1 of the double-D trigger integrated circuit stops outputting the high level and enters a base electrode of an NPN triode Q1 through the resistor R1, the NPN triode Q1 stops outputting the low level to enter a negative power supply input end of the relay K when a collector of the NPN triode Q1 is cut off, and then the control power supply input end and a normally open; because one pole of the 220V alternating current power supply is connected with the input end of the relay K control power supply, and the normally open contact end of the relay K, the other pole of the 220V alternating current power supply and the input ends of the bulb H power supply of the desk lamp are respectively connected, the desk lamp H can lose power and can not emit light at the moment. When the user needs to turn on the desk lamp H again, the hand temporarily blocks infrared light emitted by the emitting head of the photoelectric switch U3 at a certain distance (less than 45 cm) again, so that the high level output by the 3 pin of the photoelectric switch U3 is subjected to voltage reduction and current limitation through the resistor R2 and enters the 3 pin of the dual-D flip integrated circuit U2, the bistable flip circuit formed by the dual-D flip integrated circuit U2 turns over once, the high level output by the 1 pin is subjected to voltage reduction and current limitation through the resistor R1 and enters the base of the NPN triode Q1, then the NPN triode Q1 conducts the low level output by the collector thereof and enters the negative power supply input end of the relay K, the relay K can electrically attract the control power supply input end and the normally open contact end of the relay K to be closed, and the desk lamp H obtains the electric light emission … …, so that the user can realize.

As shown in fig. 2, in the novel medium-level switching power supply U1, the 13V dc power output from

pins

3 and 4 charges the storage battery G in a floating manner, and after the 220V power supply is disconnected, if the voltage of the storage battery G is higher than 12V, the voltage of the storage battery G is reduced by the resistor R3, and then the voltage of the power supply voltage enters the base of the NPN triode Q2 and is higher than 0.7V, so that the NPN triode Q2 turns on the collector thereof to output a low level and enters the base of the NPN triode Q3, and the base of the NPN triode Q3 has no proper forward bias and is in a cut-off state, so the buzzer B cannot be; when the voltage of the storage battery G is lower than 12V, the voltage of the storage battery G is reduced by the resistor R3 at the moment, the power supply voltage enters the base electrode of the NPN triode Q2 and is lower than 0.7V, then the base electrode of the NPN triode Q2 is cut off, the collector electrode does not output any level and enters the base electrode of the NPN triode Q3, the base electrode of the NPN triode Q3 is reduced in voltage and limited by the resistor R4, proper forward bias voltage (higher than 0.7V) is obtained and is in a conducting state, the collector electrode of the NPN triode Q3 outputs low level and enters the negative power supply input end of the buzzer B, and the buzzer B is electrified and sounded to prompt a user to charge the storage battery. Through the above, the novel desk lamp does not need manual control in use, when the desk lamp is turned on and turned off, the handle is spaced by dozens of centimeters to temporarily block the front of the detecting head of the photoelectric switch, so that the desk lamp can be powered on to work or not work any more when the desk lamp is powered off under the action of the internal circuit of the trigger sub-circuit; the probability of electric shock of a user is reduced, convenience is brought to the user, and the grade of a table lamp product is improved. This is novel in, can also reduce to the certain degree at the inside battery of desk lamp when, the very first time gives the user suggestion through surveying the sub-circuit, has prevented that follow-up power failure from adopting the battery power supply, and the battery electric power storage brings the influence to in-service use too little. In fig. 2, relay K is a model pinolen DC12V relay; the models of NPN triodes Q1 and Q3 are 9013; the model of the NPN triode Q2 is 9014; the resistances of the resistors R1 and R2 are 4.7K and 2.2K respectively; the sounder B is an active continuous sound alarm of the union brand. The resistances of the resistors R3 and R4 are 1.14M and 47K respectively.

The basic principles and essential features of the invention and the advantages of the invention have been shown and described above, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but rather can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. A desk lamp control circuit comprises a switching power supply and a photoelectric switch, and is characterized by also comprising a trigger sub-circuit and a detection sub-circuit, wherein the trigger sub-circuit, the detection sub-circuit, the switching power supply and the photoelectric switch are arranged on a circuit board and are connected through circuit board wiring; the two ends of the power supply input of the switching power supply are respectively connected with two poles of an alternating current 220V power supply, and the two ends of the power supply output of the switching power supply are respectively connected with the two ends of the photoelectric switch, the trigger sub-circuit, the detection sub-circuit and the power supply input of the storage battery in the desk lamp; the signal output end of the photoelectric switch is connected with the signal input end of the trigger sub-circuit; one pole of the 220V alternating current power supply is connected with the input end of the control power supply of the trigger sub-circuit, and the output end of the control power supply of the trigger control sub-circuit, the other pole of the 220V alternating current power supply and the two ends of the bulb power supply input of the desk lamp are respectively connected.

2. The desk lamp control circuit of claim 1, wherein the switching power supply is an ac to dc switching power supply.

3. The desk lamp control circuit of claim 1, wherein the electro-optical switch is a reflective electro-optical switch sensor.

4. The desk lamp control circuit of claim 1, wherein the trigger sub-circuit comprises a double D trigger IC of type CD4013, a resistor, a relay, and an NPN triode, the double-D trigger integrated circuit is connected with a positive power supply input end of a relay through a circuit board, a pin 14 of a positive power supply input end of the double-D trigger integrated circuit is connected with a positive power supply input end of the relay, a pin 3 of a clock signal input end of the double-D trigger integrated circuit is connected with one end of a second resistor, a pin 2 of an inverted code output end and a pin 5 of a data input end of the double-D trigger integrated circuit are connected, a pin 7 of a negative power supply input end of the double-D trigger integrated circuit, a pin 4 of a direct reset end and a pin 6 of a direct position end are connected with an NPN triode emitter, a pin 1 of a primary code output end of the double-D trigger integrated circuit is connected with one end of a first resistor.

5. The desk lamp control circuit of claim 1, wherein the detection sub-circuit comprises a resistor, an NPN triode and a sounder B, the resistor, the NPN triode and the sounder B are connected through a circuit board, one end of a first resistor is connected with one end of a second resistor and the positive power input end of the sounder, the other end of the first resistor is connected with the base of the first NPN triode, the collector of the first NPN triode is connected with the base of the second NPN triode and the other end of the second resistor, the collector of the second NPN triode is connected with the negative power input end of the sounder, and the emitters of the two NPN triodes are connected.