CN209693126U - A light brightness indicator switch - Google Patents

Abstract

The utility model relates to a lamp brightness indicating switch, which comprises a switch body, a brightness adjusting hole and a brightness adjusting button. It includes a displacement sensor, a high energy consumption detection device, a medium energy consumption detection device and a low energy consumption detection device arranged on the energy saving end; Prompt in the high energy consumption stage; the medium energy consumption detection device includes a medium energy consumption detection unit and a second sounding prompt unit to realize the prompt that the current brightness of the lamp is in the medium energy consumption stage; the low energy consumption detection device includes a low energy consumption detection unit and a third sounding prompting unit to realize prompting that the current brightness of the lamp is in a low energy consumption stage. The utility model can prompt the energy consumption stage of the lamp, so that people can better adjust the brightness of the lamp and reduce the loss of electric energy.

Description

A light brightness indicator switch

technical field

The utility model relates to the technical field of switches, in particular to a lamp brightness indicating switch.

Background technique

A switch is an electronic component that can open a circuit, interrupt current, or cause it to flow to other circuits.

In general, the smaller the brightness of the lamp, the smaller the current received and the smaller the electric energy consumed. In the prior art, in order to reduce the electric energy consumption of the lamp and ensure that the lamp can continue to emit light, people usually The corresponding brightness adjustment button will be set on the switch of the control lamp, and the output of the current will be reduced by sliding the brightness adjustment button, so as to reduce the brightness of the lamp and the power consumption.

The above-mentioned prior art solutions have the following defects: the brightness of the corresponding stage will correspond to the power consumption of the corresponding stage, and people can sense the rise and fall of the brightness of the lamp in the process of sliding the brightness adjustment button, but cannot know the corresponding brightness. Electricity consumption, and then people feel that the brightness of the lamp is already dim and in a lower electric energy consumption stage, but the brightness may be at a critical value between the higher electric energy consumption stage and the lower electric energy consumption, resulting in a higher electric energy consumption. big.

Utility model content

The purpose of the utility model is to provide a lamp brightness indicator switch, which can prompt the energy consumption stage of the lamp during the lighting process, so that people can better adjust the brightness of the lamp and reduce the loss of electric energy.

The above utility model purpose of the present invention is achieved through the following technical solutions: a light brightness indicating switch, comprising a switch body, a brightness adjustment hole is opened on the switch body, and a brightness adjustment hole is slidably connected in the brightness adjustment hole Adjustment button, the two ends of the brightness adjustment hole correspond to the energy-consuming end of the highest brightness of the lamp and the energy-saving end corresponding to the lowest brightness of the lamp, the brightness adjustment button is closer to the energy-consuming end. The energy consumption of the energy-saving end is smaller;

It also includes a displacement sensor, a high energy consumption detection device, a medium energy consumption detection device and a low energy consumption detection device arranged at the energy-saving end;

The displacement sensor is used to convert the physical quantity of the distance between the brightness adjustment button and the energy-saving end into a displacement signal;

The high energy consumption detection device includes a high energy consumption detection unit and a first sounding prompt unit, the high energy consumption detection unit is coupled to the displacement sensor to receive a displacement signal and output a first detection signal, the first sounding The prompting unit receives the first detection signal and responds to the first detection signal to realize the prompting that the current brightness of the lamp is in a high energy consumption stage;

The middle energy consumption detection device includes a middle energy consumption detection unit and a second sounding prompting unit, the middle energy consumption detection unit is coupled to the displacement sensor to receive a displacement signal and output a second detection signal, the second sounding The prompting unit receives the second detection signal and responds to the second detection signal to realize the prompting that the current brightness of the lamp is in the middle energy consumption stage;

The low energy consumption detection device includes a low energy consumption detection unit and a third sounding prompt unit, the low energy consumption detection unit is coupled to the displacement sensor to receive a displacement signal and output a third detection signal, the third sounding The prompting unit receives the third detection signal and responds to the third detection signal to realize the prompting that the current brightness of the lamp is in the low energy consumption stage.

By adopting the above technical solution, when the switch is turned on and the lamp is in the working state, the displacement sensor senses the distance between the brightness adjustment button and the energy-saving end, converts it into a displacement signal, and then transmits it to the high, medium and low energy consumption detection In the device, once people move the brightness adjustment button toward the energy-saving end to adjust the brightness of the lamp, the distance between the brightness adjustment button and the energy-saving end meets the requirements of the high energy consumption detection unit, and the first sounding prompting unit sounds to remind the current light. The brightness of the lamp is in the high energy consumption stage; the distance between the brightness adjustment button and the energy-saving end meets the requirements of the medium energy consumption detection unit, and the second sounding prompt unit emits sound to indicate that the brightness of the current lamp is in the medium energy consumption stage; the brightness adjustment button and the energy saving The distance between the terminals meets the requirements of the low-energy-consumption detection unit, and the third audible prompting unit emits sound to indicate that the current lamp brightness is in the low-energy-consuming stage; thus, it is convenient for people to better adjust the brightness of the lamp, which is beneficial to reduce power consumption. .

Preferably, the high energy consumption detection unit includes a first displacement comparison circuit and a first reference circuit, the first reference circuit is used to provide a first displacement upper limit signal, and the first displacement upper limit signal is that the lamp is in high energy consumption The distance between the stage brightness adjustment button and the energy-saving end;

The middle energy consumption detection unit includes a second displacement comparison circuit and a second reference circuit, the second reference circuit is used to provide a second displacement upper limit signal, and the second displacement upper limit signal is the brightness adjustment of the lamp in the middle energy consumption stage. The distance between the button and the energy-saving end;

The low energy consumption detection unit includes a third displacement comparison circuit and a third reference circuit, the third reference circuit is used to provide a third displacement upper limit signal, and the third displacement upper limit signal is the brightness adjustment of the lamp in the low energy consumption stage. The distance between the button and the energy-saving end.

By adopting the above technical solution, the distance between the brightness adjustment knob and the energy-consuming end can be better judged by setting the corresponding displacement comparison circuit and reference circuit in each stage.

Preferably, the first sounding prompting unit includes a transistor Q1 and a first buzzer, the base of the transistor Q1 is coupled to the output end of the first displacement comparison circuit, the emitter is grounded, and the collector is coupled to One end of the first buzzer and the other end of the first buzzer are coupled to the Vcc voltage.

By adopting the above technical solution, after receiving the first detection signal, the triode Q1 is set to trigger the first buzzer to sound for a long time, so as to prompt that the current lamp is in a high energy consumption stage.

Preferably, the first sounding prompting unit further includes a first disconnecting circuit, and the first disconnecting circuit is used to disconnect the circuit connection of the first buzzer.

By adopting the above technical solution, by setting the first disconnecting circuit, once the first buzzer sounds and the light intensity of the indicator light is in the advanced energy consumption stage, the line can be cut off through the first disconnecting circuit to avoid the first buzzer Excessive noise is produced.

Preferably, the first voice prompting unit further includes a signal amplifying circuit, the signal amplifying circuit is coupled to the output end of the first displacement comparison circuit to receive the first detection signal for signal amplification, and transmit it to the transistor Q1 .

By adopting the above technical solution, a signal amplifying circuit is provided to amplify the first detection signal, thereby more quickly reminding people that the current brightness of the light bulb is in a stage of high energy consumption.

Preferably, the second sound prompting unit includes a transistor Q2, an RC oscillator circuit and a second buzzer, the RC oscillator circuit includes resistors R3, R5, R6, a capacitor C1, a comparator A4 and a filter circuit, the transistor The base of Q2 is coupled to the output end of the second displacement comparison circuit, the emitter is grounded, the collector is coupled to one end of the resistors R3 and R5, the other end of the resistor R3 is coupled to one end of the capacitor C1, and the The other end is coupled to the filter circuit, and the other end of the capacitor C1 and the other end of the resistor R5 are also coupled to the non-inverting end of the comparator A4, the inverting end of the comparator A4 is grounded through the resistor R6, and the output end of the comparator A2 is coupled Connected to the second buzzer, the other end of the second buzzer is coupled to the Vcc voltage.

By adopting the above technical solution, the transistor Q2 is set to trigger the second buzzer to sound intermittently after receiving the second detection signal, so as to prompt that the current lamp is in the middle energy consumption stage.

Preferably, the filter circuit includes a resistor R4 and a capacitor C2 connected in parallel with each other. One end of the resistor R4 and the capacitor C2 is coupled to the non-inverting end of the comparator A4, and the other end is grounded.

By adopting the above technical solution, a filter circuit is provided to remove the interference signal in the second detection signal.

Preferably, the second sounding prompting unit further includes a second disconnection circuit, and the second disconnection circuit is used to disconnect the circuit connection of the second buzzer.

By adopting the above technical solution, by setting the second disconnecting circuit, once the second buzzer sounds and the light brightness of the indicator light is in the middle-level energy consumption stage, the line can be cut off through the second disconnecting circuit, so as to avoid the second buzzer Excessive noise is produced.

Preferably, the third sound prompting unit includes a transistor Q3, a blinking circuit and a third buzzer, the blinking circuit includes a 555 timer, resistors R8, R9, capacitors C3, C4, and the base of the transistor Q3 is coupled Connected to the output end of the third displacement comparison circuit, the emitter is grounded, the collector is coupled to the 4-pin, 8-pin of the 555 timer and one end of the resistor R8, and the other end of the resistor R8 is coupled to the 3-pin, One end of the resistor R9 and one end of the third buzzer, the other end of the resistor R9 is coupled to pins 2 and 6 of the 555 timer and the first end of the capacitor C4, and the second end of the capacitor C4 is coupled to the 555 timer The 1 pin of the 555 timer is grounded, the 5 pin of the 555 timer is grounded through the capacitor C3, and the other end of the third buzzer is coupled to the Vcc voltage.

By adopting the above technical solution, after receiving the third detection signal, the triode Q3 is set to trigger the third buzzer to make frequent flickering sound, so as to prompt that the current lamp is in a low energy consumption stage.

Preferably, the third sounding prompting unit further includes a third disconnecting circuit, and the third disconnecting circuit is used to disconnect the circuit connection of the third buzzer.

By adopting the above technical solution, by setting the third disconnecting circuit, once the third buzzer sounds and the light brightness of the indicator light is in the low-level energy consumption stage, the line can be disconnected through the third disconnecting circuit to avoid the third buzzer Excessive noise is produced.

To sum up, the beneficial technical effects of the present utility model are:

By setting a high energy consumption detection unit, a first sounding prompting unit, a medium power consumption detecting unit, a second sounding prompting unit, a low energy consumption detecting unit and a third sounding prompting unit, the energy consumption stage of the lamp brightness can be prompted , it is convenient for people to better adjust the brightness of the lamp, which is beneficial to reduce the loss of electric energy.

Description of drawings

Figure 1 is a schematic diagram of the overall structure of the present invention.

FIG. 2 is a schematic diagram of the circuit structure of the present invention.

In the figure, 1, switch body; 2, brightness adjustment hole; 21, brightness adjustment button; 22, energy consumption end; 23, energy saving end; 3, displacement sensor; 4, high energy consumption detection device; 41, high energy consumption detection unit; 411, the first displacement comparison circuit; 412, the first reference circuit; 42, the first sounding prompt unit; 421, the first buzzer; 422, the first disconnecting circuit; 423, the signal amplification circuit; 5, the middle energy consumption detection device; 51, middle energy consumption detection unit; 511, second displacement comparison circuit; 512, second reference circuit; 52, second sound prompting unit; 521, RC oscillator circuit; 522, second buzzer; 523, second disconnection circuit; 6, low energy consumption detection device; 61, low energy consumption detection unit; 611, third displacement comparison circuit; 612, third reference circuit; 62, third sounding prompt unit; 621, flashing circuit; 622, the third buzzer; 623, the third disconnecting circuit; 7, the filter circuit.

Detailed ways

The present utility model will be described in further detail below in conjunction with the accompanying drawings.

Referring to FIG. 1, it is a light brightness indicating switch disclosed by the utility model, including a switch body 1, a brightness adjustment hole 2 is opened on the switch body 1, and a brightness adjustment button for adjusting the brightness of the lamp is slidably connected in the brightness adjustment hole 2 21. The two ends of the brightness adjustment hole 2 correspond to the energy-consuming end 22 of the highest brightness of the lamp, and the energy-saving end 23 corresponding to the lowest brightness of the lamp. The energy consumption of the lamp is smaller when the energy-saving end 22 is located, the energy consumption of the lamp is smaller when it is close to the energy-saving end 23 , and the energy consumption of the lamp is greater when it is far from the energy-saving end 23 .

Referring to FIG. 2, it also includes a displacement sensor 3, a high energy consumption detection device 4, a medium energy consumption detection device 5 and a low energy consumption detection device 6 arranged on the energy saving end 23; the displacement sensor 3 is used to connect the brightness adjustment button 21 to the energy saving end The physical quantity of the distance between 23 is converted into a displacement signal and output, and the model of the displacement sensor 3 is preferably ZLDS/N-100.

The high energy consumption detection device 4 includes a high energy consumption detection unit 41 and a first sound prompting unit 42. The high energy consumption detection unit 41 is coupled to the displacement sensor 3 to receive the displacement signal and output a first detection signal after detection. The first sound The prompting unit 42 receives the first detection signal and responds to the first detection signal to realize the prompting that the current brightness of the lamp is in a high energy consumption stage.

The high energy consumption detection unit 41 includes a first displacement comparison circuit 411 and a first reference circuit 412. The first reference circuit 412 is used to provide a first displacement upper limit signal to the first comparison circuit, and the first displacement upper limit signal is that the lamp is in high energy consumption. The distance between the stage brightness adjustment button 21 and the energy-saving end 23; the first displacement comparison circuit 411 includes a resistor R1 and a comparator A1, the model of the comparator A1 is preferably LM311, and the same-direction end of the comparator A1 is coupled through the resistor R1 The displacement sensor 3 is used to receive the displacement signal, and the reverse end of the comparator A1 is coupled to the first reference circuit 412; the first reference circuit 412 includes a resistor R2 and a potentiometer Rp1, and the model of the potentiometer Rp1 is preferably 3296X-502, The voltage Vcc is connected to the resistor R2 and the potentiometer Rp1 in turn. The potentiometer Rp1 is grounded. The connection point between the resistor R2 and the potentiometer Rp1 provides the upper limit signal Vref1. The upper limit signal Vref1 can be adjusted by adjusting the potentiometer Rp1.

The first sounding prompting unit 42 includes a signal amplifying circuit 423, a transistor Q1, a first buzzer 421 and a first disconnecting circuit 422; the signal amplifying circuit 423 is coupled to the output end of the first displacement comparison circuit 411 to receive the first detection The signal is amplified and transmitted to the transistor Q1. The signal amplification circuit 423 includes an amplifier IC1, resistors R7 and R8. The model of the amplifier IC1 is preferably LM324. The terminal is coupled to one end of the resistor R8, the other end of the resistor R8 is grounded, a resistor R7 is connected in series between the inverting terminal and the output terminal of the amplifier IC1, and the output terminal of the amplifier IC1 is coupled to the transistor Q1.

The base of the transistor Q1 is coupled to the output end of the amplifier IC1, the emitter is grounded, the collector is coupled to one end of the first buzzer 421, and the other end of the first buzzer 421 is coupled to the first disconnect circuit 422 , the first disconnect circuit 422 is used to disconnect the circuit connection of the first buzzer 421, the first disconnect circuit 422 includes a switch S1, one end of the switch S1 is coupled to one end of the first buzzer 421, and the other end is coupled to Connected to Vcc voltage.

The middle energy consumption detection device 5 includes a middle energy consumption detection unit 51 and a second sounding prompt unit 52. The middle energy consumption detection unit 51 is coupled to the displacement sensor 3 to receive the displacement signal and output a second detection signal after detection. The second sound The prompting unit 52 receives the second detection signal and responds to the second detection signal to realize the prompting that the current brightness of the lamp is in the middle energy consumption stage.

The middle energy consumption detection unit 51 includes a second displacement comparison circuit 511 and a second reference circuit 512. The second reference circuit 512 is used to provide a second displacement upper limit signal to the second displacement comparison circuit 511. The second displacement upper limit signal is that the lamp is in the middle. The distance between the brightness adjustment button 21 and the energy-saving end 23 in the energy consumption stage; the second displacement comparison circuit 511 includes a resistor R3 and a comparator A2, the model of the comparator A2 is preferably LM311, and the same-direction end of the comparator A2 is coupled through the resistor R3 The displacement sensor 3 is used to receive the displacement signal, and the reverse end of the comparator A2 is coupled to the second reference circuit 512; the second reference circuit 512 includes a resistor R4 and a potentiometer Rp2, and the model of the potentiometer Rp2 is preferably 3296X-502, The voltage Vcc is connected to the resistor R4 and the potentiometer Rp2 in turn, the potentiometer Rp2 is grounded, and the connection point between the resistor R4 and the potentiometer Rp2 provides the upper limit signal Vref2, and the upper limit signal Vref2 can be adjusted by adjusting the potentiometer Rp2.

The second voice prompting unit 52 includes a transistor Q2, an RC oscillator circuit 521, a second buzzer 522 and a second disconnect circuit 523. The RC oscillator circuit 521 includes resistors R9, R11, R12, capacitor C1, comparator A4 and a filter circuit 7. The base of the transistor Q2 is coupled to the output end of the second displacement comparison circuit 511, the emitter is grounded, the collector is coupled to one end of the resistors R9 and R11, the other end of the resistor R9 is coupled to one end of the capacitor C1, the capacitor The other end of C1 is coupled to the filter circuit 7, and the other end of the capacitor C1 and the other end of the resistor R11 are also coupled to the non-inverting end of the comparator A4, the inverting end of the comparator A4 is grounded through the resistor R12, and the The output end is coupled to the second buzzer 522, and the other end of the second buzzer 522 is coupled to the second disconnecting circuit 523; the filter circuit 7 includes a resistor R10 and a capacitor C2 connected in parallel with each other, and the connection between the resistor R10 and the capacitor C2 is One end is coupled to the non-inverting end of the comparator A4, and the other end is grounded; the second disconnecting circuit 523 is used to disconnect the circuit connection of the second buzzer 522, the second disconnecting circuit 523 includes a switch S2, and one end of the switch S2 is coupled to One end of the second buzzer 522 is connected, and the other end is coupled to the Vcc voltage.

The low energy consumption detection device 6 includes a low energy consumption detection unit 61 and a third sound prompting unit 62. The low energy consumption detection unit 61 is coupled to the displacement sensor 3 to receive the displacement signal and output a third detection signal after detection. The third sound The prompting unit 62 receives the third detection signal and responds to the third detection signal to realize the prompting that the current brightness of the lamp is in the low energy consumption stage.

The low energy consumption detection unit 61 includes a third displacement comparison circuit 611 and a third reference circuit 612. The third reference circuit 612 is used to provide a third displacement upper limit signal to the third displacement comparison circuit 611, and the third displacement upper limit signal is that the lamp is in a low state. The distance between the brightness adjustment button 21 and the energy-saving end 23 in the energy consumption stage; the third displacement comparison circuit 611 includes a resistor R5 and a comparator A3, the model of the comparator A3 is preferably LM311, and the same-direction end of the comparator A3 is coupled through the resistor R5 The displacement sensor 3 is used to receive the displacement signal, and the reverse end of the comparator A3 is coupled to the second reference circuit 512; the second reference circuit 512 includes a resistor R6 and a potentiometer Rp3, and the model of the potentiometer Rp3 is preferably 3296X-502, The voltage Vcc is connected to the resistor R6 and the potentiometer Rp2 in turn, the potentiometer Rp2 is grounded, and the connection point between the resistor R6 and the potentiometer Rp2 provides the upper limit signal Vref3, and the upper limit signal Vref3 can be adjusted by adjusting the potentiometer Rp3.

The third sound prompting unit 62 includes a transistor Q3, a blinking circuit 621, a third buzzer 622 and a third disconnecting circuit 623. The blinking circuit 621 includes a 555 timer, resistors R13, R14, capacitors C3, C4, and the base of the transistor Q3 The pole is coupled to the output end of the third displacement comparison circuit 611, the emitter is grounded, the collector is coupled to pins 4 and 13 of the 555 timer and one end of the resistor R13, the other end of the resistor R13 is coupled to the 555 timer Pin 3, one end of the resistor R14 and one end of the third buzzer 622, the other end of the resistor R14 is coupled to the 2-pin, 6-pin of the 555 timer and the first end of the capacitor C4, and the second end of the capacitor C4 is coupled to The 1 pin of the 555 timer is grounded, the 5 pin of the 555 timer is grounded through the capacitor C3, the other end of the third buzzer 622 is coupled to the third disconnecting circuit 623, and the third disconnecting circuit 623 is used for disconnecting The circuit of the third buzzer 622 is connected, and the third disconnecting circuit 623 includes a switch S3, one end of the switch S3 is coupled to one end of the third buzzer 622, and the other end is coupled to the Vcc voltage.

The examples of this specific embodiment are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore: all equivalent changes made according to the structure, shape and principle of the present invention are not It should be covered within the protection scope of the present invention.

Claims (10)

1. a kind of lamp brightness instruction switchs, including Switch main body (1), brightness regulation hole is offered on the Switch main body (1) (2), sliding is connected with brightness regulation button (21) in the brightness regulation hole (2), it is characterised in that: the brightness regulation hole (2) Both ends correspond respectively to the energy consumption end (22) of lamp maximum brightness, the energy saving end (23) corresponding to lamp minimum brightness, the brightness Adjusting knob (21) is bigger close to the energy consumption of the energy consumption end (22) lamp, consumes energy close to the energy saving end (23) smaller；

It further include the displacement sensor (3) for being set to energy saving end (23), highly energy-consuming detection device (4), middle energy consumption detection device (5) And low power consuming detection device (6)；

Institute's displacement sensors (3) are used to convert the distance between brightness regulation button (21) and the energy saving end (23) physical quantity For displacement signal；

The highly energy-consuming detection device (4) includes highly energy-consuming detection unit (41), the first sound production prompt unit (42), the high consumption Can detection unit (41) be coupled to institute's displacement sensors (3) to receive displacement signal and export first detection signal, described the One sound production prompt unit (42) receives first detection signal and is in realizing to lamp present intensity in response to first detection signal The prompt in highly energy-consuming stage；

The middle energy consumption detection device (5) includes middle energy consumption detection unit (51), the second sound production prompt unit (52), the middle consumption Can detection unit (51) be coupled to institute's displacement sensors (3) to receive displacement signal and export the second detection signal, described the Two sound production prompt units (52) receive the second detection signal and are in realizing to lamp present intensity in response to the second detection signal The prompt in middle energy consumption stage；

The low power consuming detection device (6) includes low power consuming detection unit (61), third sound production prompt unit (62), the low consumption Can detection unit (61) be coupled to institute's displacement sensors (3) to receive displacement signal and export third detection signal, described the Three sound production prompt units (62) receive third detection signal and are in realizing to lamp present intensity in response to third detection signal The prompt in low power consuming stage.

2. a kind of lamp brightness instruction switch according to claim 1, it is characterised in that: the highly energy-consuming detection unit (41) Including the first displacement comparison circuit (411), the first reference circuit (412), first reference circuit (412) is for providing first It is displaced upper limit signal, the first displacement upper limit signal is that lamp is in highly energy-consuming stage brightness regulation button (21) and energy saving end (23) Distance；

The middle energy consumption detection unit (51) includes second displacement comparison circuit (511), the second reference circuit (512), and described Two reference circuits (512) are that lamp is in middle energy consumption rank for providing second displacement upper limit signal, the second displacement upper limit signal Section brightness regulation button (21) is at a distance from energy saving end (23)；

The low power consuming detection unit (61) includes third displacement comparison circuit (611), third reference circuit (612), and described the Three reference circuits (612) are that lamp is in low power consuming rank for providing third displacement upper limit signal, the third displacement upper limit signal Section brightness regulation button (21) is at a distance from energy saving end (23).

3. a kind of lamp brightness instruction switch according to claim 2, it is characterised in that: the first sound production prompt unit It (42) include triode Q1, the first buzzer (421), the base stage of the triode Q1 is coupled to the first displacement comparison circuit (411) output end, emitter ground connection, collector are coupled to one end of the first buzzer (421), the first buzzer (421) The other end is coupled to Vcc voltage.

4. a kind of lamp brightness instruction switch according to claim 3, it is characterised in that: the first sound production prompt unit It (42) further include the first disconnecting circuit (422), first disconnecting circuit (422) is for disconnecting first buzzer (421) Circuit connection.

5. a kind of lamp brightness instruction switch according to claim 3, it is characterised in that: the first sound production prompt unit It (42) further include signal amplification circuit (423), the signal amplification circuit (423) is coupled to the first displacement comparison circuit (411) output end is transferred to triode Q1 to receive first detection signal to carry out signal amplification.

6. a kind of lamp brightness instruction switch according to claim 2, it is characterised in that: the second sound production prompt unit It (52) include triode Q2, RC oscillating circuit (521) and the second buzzer (522), the RC oscillating circuit (521) includes resistance R3, R5, R6, capacitor C1, comparator A4 and filter circuit (7), the base stage of the triode Q2 are coupled to the second displacement ratio Compared with the output end of circuit (511), emitter ground connection, collector is coupled to one end of resistance R3 and R5, the other end coupling of resistance R3 It is connected to one end of capacitor C1, the other end of capacitor C1 is coupled to filter circuit (7), and the other end of capacitor C1 is also with resistance R5's The other end is coupled to the in-phase end of comparator A4, and the reverse side of comparator A4 is grounded by resistance R6, the output end of comparator A2 It is coupled to the second buzzer (522), the other end of second buzzer (522) is coupled to Vcc voltage.

7. a kind of lamp brightness instruction switch according to claim 6, it is characterised in that: the filter circuit (7) includes phase Mutually one end of resistance R4 in parallel and capacitor C2, resistance R4 and capacitor C2 are coupled to the in-phase end of comparator A4, other end ground connection.

8. a kind of lamp brightness instruction switch according to claim 6, it is characterised in that: the second sound production prompt unit It (52) further include the second disconnecting circuit (523), second disconnecting circuit (523) is for disconnecting second buzzer (522) Circuit connection.

9. a kind of lamp brightness instruction switch according to claim 2, it is characterised in that: the third sound production prompt unit It (62) include triode Q3, flashing circuit (621) and third buzzer (622), the flashing circuit (621) includes 555 timing Device, resistance R8, R9, capacitor C3, C4, the base stage of the triode Q3 are coupled to the output end of third displacement comparison circuit (611), Emitter ground connection, collector are coupled to one end of 4 feet of 555 timers, 8 feet and resistance R8, the other end coupling of resistance R8 In one end of 3 feet of 555 timers, one end of resistance R9 and third buzzer (622), the other end of resistance R9 is coupled to The first end of 2 feet of 555 timers, 6 feet and capacitor C4, the second end of capacitor C4 are coupled to 1 foot of 555 timers and connect 5 feet on ground, 555 timers are grounded by capacitor C3, and the other end of third buzzer (622) is coupled to Vcc voltage.

10. a kind of lamp brightness instruction switch according to claim 9, it is characterised in that: the third sound production prompt unit It (62) further include third disconnecting circuit (623), the third disconnecting circuit (623) is for disconnecting the third buzzer (622) Circuit connection.