CN101936515B

CN101936515B - LED lamp capable of being inductively controlled by touching

Info

Publication number: CN101936515B
Application number: CN2009101004259A
Authority: CN
Inventors: 尤晓波; 林万炯
Original assignee: 林万炯
Current assignee: Ningbo Self Electronics Co Ltd
Priority date: 2009-06-30
Filing date: 2009-06-30
Publication date: 2012-07-11
Anticipated expiration: 2029-06-30
Also published as: CN101936515A

Abstract

The invention discloses an LED lamp capable of being inductively controlled by touching, comprising a signal acquisition module and a control unit, wherein, an induction touch block is connected with the signal acquisition module which is electrically connected with the control unit; the control unit is electrically connected with a drive circuit; the drive circuit is electrically connected with a connecting piece; the induction touch block sends out a control signal after being touched; the control signal is converted into a digital signal which can be processed by the control unit through the signal acquisition unit; the control unit sends out a corresponding switch-on, switch-off or light adjusting control signal according to the received digital signal; the control signal from the control unit controls presence or absence or changes of the output electric energy of the drive circuit to the connecting piece, so as to control the lighting state of the LED lamp connected on the connecting piece. The LED lamp realizes control through a digital circuit manner, has strong anti-interference ability, leads the control of the lamps to be simpler and faster, and is convenient for normal easy operation.

Description

The LED lamp of ability touch sensible control

Technical field

The present invention relates to a kind of with the light fixture of led chip as light source, particularly relate to a kind of can touch sensible the LED lamp of control, the on off state of this lamp switches and the adjusting of brightness realizes through the touch sensible control mode.

Background technology

Conventional lamp is electrically connected with a switching device, and this switching device is in order to the switching between the on off state of control light fixture.In building lighting, light fixture can pass through touch sensible mode gauge tap.The Chinese patent publication number is that CN1163512A, CN1420630A, CN1310429C and CN1790909A all disclose and relate to the induction control that touches capacitive way; Yet the technology of this announcement only realizes the switch control of light fixture, can not realize simultaneously that the touch of the brightness of light fixture is regulated.And traditional lamp control circuit is with the variation of external environment, and the anti-preferably external interference ability of difficult realization makes the control of light fixture accurately not realize.Along with generally applying of LED lamp body, traditional control circuit can't have been realized the control of LED lamp is realized.

Summary of the invention

The objective of the invention is the defective to above-mentioned prior art existence, the LED lamp of a kind of ability touch sensible control is provided, this lamp can be controlled the open and close of lamp body and the realization of brightness control function easily through the mode that touches.

For realizing above-mentioned purpose, the LED lamp of the present invention's ability touch sensible control comprises touch sensitive piece, drive circuit and connector, and connector and LED lamp body electrically connect.The LED lamp of this ability touch sensible control further comprises signal acquisition module and control module; The touch sensitive piece connects signal acquisition module; Signal acquisition module electrically connects control module; Control module is electrically connected with drive circuit; Drive circuit is electrically connected this connector, sends control signal after the touch sensitive piece is touched, and this control signal converts the treatable data signal of control module to through signal gathering unit; Control module sends corresponding open and close or dimming control signal according to the data signal of accepting, from the control signal control drive circuit of control module to the output electric energy of connector be have, do not have or variation with the luminance of the LED lamp body of control connection on connector.

The touch sensitive piece is that the control of touch electric capacity, visible light induction control and human body IR Passive are responded to any one in the control mode.

The analog signal of signal acquisition module self-induction touch in the future piece changes into corresponding data signal; This data signal is sent to control module as control instruction; Control module adopts the PWM control mode further to control drive circuit, so make connector output electric current for have, it's too late, and electric current reduces three kinds of states.

Be connected with the 4th pin as the touch sensible electric capacity of touch sensitive piece as first chip of signal acquisition module; The 5th pin is connected in series an electric capacity with the 4th pin; Be connected in series the RC circuit that is formed in parallel by resistance and electric capacity between the 5th pin ground connection, the 3rd pin and earth point, be connected a resistance between second pin and first pin; Second pin is connected to the positive pole of 5V dc source; The external resistance of first pin is connected with the input of control module through this resistance, and this resistance is as signal output part.

As being connected in series the circuit that forms by resistance and capacitances in series between second pin of the touch sensible electric capacity of touch sensitive piece and this signal acquisition module and the 6th pin; Wherein this electric capacity is connected the 7th pin and is connected to two resistance with touch sensible electric capacity; One resistance is connected with the positive pole of direct current 5V power supply; Another resistance string is connected between second pin and the 7th pin, is connected with electric capacity between the 6th pin and the earth point, and the 3rd pin is connected with control module as signal output part; The first pin ground connection, the 4th pin, the 5th pin and the 8th pin are vacant.

Second pin of single-chip microcomputer is connected with the signal output part of signal acquisition module as signal input part; The 4th pin ground connection of single-chip microcomputer; The 8th pin is connected with the positive pole of direct current 5V power supply; Six, the 7th pin can each be connected with one drive circuit as signal output part, and the first, the 3rd and the 5th pin of this single-chip microcomputer is vacant.

Drive circuit comprises a chip and the electronic devices and components that are connected with this chip; Be connected a resistance between the 3rd pin of this chip and the 7th pin of single-chip microcomputer; Be connected in series a resistance between the 8th pin and the 6th pin, the 8th pin is connected with the positive pole of direct current 24V power supply, the 8th pin and with earth point between be serially connected with two parallelly connected electric capacity; Be serially connected with electric capacity and unilateral diode between second pin and the earth point successively; First pin is connected with first pin of connector, is serially connected with an inductance between first pin of first pin and connector, is serially connected with two resistance that a series connection mode is connected successively between first pin of connector and the earth point; The 5th pin of chip is connected with the 3rd pin of connector; Three resistance that are connected in parallel with each other are connected between the 5th pin and the earth point, are connected in series an electric capacity between the 7th pin and the earth point, and the 4th pin connects earth point.

As stated; The LED lamp that the present invention can touch control is realized the open and close of LED lamp body and the realization of brightness regulation through the time length of the control circuit senses touch control of analog signal conversion data signal; The present invention realizes control through the digital circuit mode; Anti-external interference ability is strong, and make the control of light fixture simpler and more direct, convenient normal ease of Use.

Description of drawings

In Figure of description:

Fig. 1 is the circuit control principle figure of the LED lamp of the present invention's ability touch sensible control;

The first specific embodiment circuit diagram of the signal acquisition module that Fig. 2 is among Fig. 1 to be disclosed;

The second specific embodiment circuit diagram of the signal acquisition module that Fig. 3 is among Fig. 1 to be disclosed;

The control module that Fig. 4 is among Fig. 1 to be disclosed and the physical circuit connection layout of drive circuit.

The description of reference numerals of each element is following among the figure:

Touch sensitive piece 10 signal acquisition module 20

Control module 30 drive circuits 40

Connector 50

The specific embodiment

For specifying technology contents of the present invention, architectural feature, the purpose that is realized and effect, give explanation below in conjunction with embodiment and conjunction with figs. are detailed.

See also Fig. 1, the LED lamp that the present invention can touch control comprises touch sensitive piece 10, signal acquisition module 20, control module 30, drive circuit 40 and connector 50, and wherein LED lamp body and connector 50 are electrically pegged graft.Touch sensitive piece 10 can adopt the capacitance touch mode to realize, perhaps adopts visible light to touch control mode, the realization of infrared induction touch control mode.The analog signal of signal acquisition module 20 self-induction touch in the future piece 10 changes into corresponding data signal; This data signal is sent to control module 30 as control instruction; Control module 30 adopts the PWM control modes further to control drive circuit 40, so make connector 50 outputs electric current for have, it's too late, and electric current reduces three kinds of states.Control module 30 is judged the open and close of outer bound pair light fixture integral body and the requirement of brightness regulation according to the be touched length of time of touch sensitive piece 10.The original state of control module 30 is that light fixture is in bright state, when touch sensitive piece 10 by sustained touch, the brightness of light fixture by bright deepening again to bright, also can be set to by dark to bright again to dark loop control state.

Like Fig. 2 is the physical circuit figure of first kind of embodiment of signal acquisition module 20, and wherein touch sensible capacitor C N11 is connected with the IN end of this signal acquisition module 20.Signal acquisition module 20 adopts the ADA03N chip, and this chip is as first chip.The IN end of this chip electrically connects with touch sensitive piece 10, and the GND end is connected in series a capacitor C 11 with the IN end, and the GND end is ground connection simultaneously; Be connected in series the RC circuit that is formed in parallel by resistance R 12 and capacitor C 12 between Rb end and the earth point; Be connected a resistance R 11 between vdd terminal and the OUT end, vdd terminal is connected to the positive pole of 5V DC source, and OUT holds an external resistance R 13; Be connected with the input of control module 30 through this resistance R 13, this resistance R 13 is as signal output part.In the practical application; Cause the electric capacity of touch sensible capacitor C N11 to change owing to touching; This variation is sent to first chip with the mode of signal; Be to reduce interference from outside signals and improve the sensitivity of control, between touch sensible capacitor C N11 and first chip to be connected lead short as much as possible.When having detected touch signal, this signal acquisition module 20 output low levels or high level, control module 30 is realized open and close or dim signal according to the time length that this signal continues.The OUT end of this first chip, vdd terminal, Rb end, IN end, GND end and NC end are followed successively by first to the 6th pin of this chip.

Fig. 3 realizes the physical circuit figure of second kind of embodiment of signal acquisition module 20 for adopting the ICM7555 chip; Touch sensitive piece 10 connects this capacitor C 25; Wherein be connected in series the circuit that is in series by resistance R 24 and capacitor C 25 between the TRIG of touch sensible capacitor C N24 and this signal acquisition module 20 end and the THOLD end, wherein this capacitor C 25 directly is connected with touch sensible capacitor C N24.Signal acquisition module 20 adopts ICM7555, and this chip is as second chip.The SIDCHG end of this chip also is connected to resistance R 25 and R26, and resistance R 26 is connected with the positive pole of direct current 5V power supply, and resistance R 25 is serially connected with between TRIG end and the SIDCHG end.Be connected with capacitor C 24 between THOLD end and the earth point.The OUT end is as signal output part, and GND holds ground connection, and CVOLT end, RESET end and VCC end are vacant.The concrete operation principle of this circuit: when not receiving touch signal; The OUT of second chip end produces the signal of a fixed frequency, and control module 30 these signals of storage are when touch sensitive piece 10 control that is touched; The signal that the output frequency of OUT end changes; Owing to consider interference, when the frequency of this variation surpasses certain limit, then to look this signal be the touch sensible control signal to control module 30.The GND end of second chip, TRIG end, OUT end, RESET end, CVOLT end, THOLD end, SIDCHG end and VCC end are followed successively by first to the 8th pin of this chip.

Like Fig. 4, control module 30 realizes that through a single-chip microcomputer CY8C21123 two drive circuits 40 are parallel way and connect, and connector 50 respectively is connected with a drive circuit 40, and this connector 50 is circumscribed with the LED lamp body.Wherein, This single-chip microcomputer CY8C21123 gathers the signal of telecommunication from signal acquisition module 20; And this signal made judgement; Confirming being a kind of in open and close or the brightness regulated signal, and then realize the on off state of LED lamp bodies or to the adjusting of its brightness through this signal control drive circuit 40.

Second pin of single-chip microcomputer CY8C21123 is connected as the signal output part of signal input part with signal acquisition module 20; The Vss end ground connection of single-chip microcomputer CY8C21123; The Vdd end is connected with the positive pole of direct current 5V power supply; Six, each is connected with a drive circuit 40 the 7th pin as signal output part, in order to control drive circuit 40.The Vss end and the Vdd end of this single-chip microcomputer are the 4th and the 8th pin of this single-chip microcomputer.The first, the 3rd and the 5th pin of this single-chip microcomputer is vacant.

Drive circuit 40 comprises a LM3404 chip and the electronic devices and components that are connected with this chip; Is connected a resistance R 2 between the 7th pin of the DIM of this chip end and single-chip microcomputer CY8C21123, the VIN end be connected in series a resistance R 1 between RON holds, VIN holds and is connected with the positive pole of direct current 24V power supply; The VIN end also with between the earth point is serially connected with parallelly connected capacitor C 1, C2; Be serially connected with capacitor C 4 and unilateral diode D2 successively between BOOT end and the earth point, SW end and connector 50 are that first end of parts CN1 is connected, and first end of parts CN1 is anodal tie point; Second end of parts CN1 is earth point; The 3rd end of parts CN1 is the negative pole tie point, is serially connected with an inductance L 1 between the positive pole of SW end and parts CN1, is serially connected with resistance R 7, the R6 that a series connection mode is connected successively between the anodal tie point of parts CN1 and the earth point; The CS end of chip LM3404 is connected with the 3rd end of parts CN1; Simultaneously three resistance R that are connected in parallel with each other 3, R4, R5 are connected between CS end and the earth point, be connected in seriess a capacitor C 3, GND end connection earth point between VCC end and the earth point.SW end, BOOT end, DIM end, GND end, CS end, RON end, VCC end and VIN end are followed successively by first to the 8th pin of this LM3404 chip.The second pin ground connection of parts CN1 is for being grounded protection.These parts CN1 is a connector in practical application, and this connector is circumscribed with the LED lamp body.

In the concrete application of reality, this touch sensitive piece 10 can be realized in the following manner: (1) touches electric capacity; (2) visible light induction control; (3) human body IR Passive induction control.When adopting visible light induction control; Its concrete implementation comprises a light emitting diode and a visible light sensing device; Light emitting diode sends the pulse visible light signal; Block the pulse visible light signal as object, visible light signal reflexes to the visible light sensing device, according to the duration realization open and close and the brightness adjustment control of reflected signal.Human body IR Passive induction implementation comprises an infrared inductor; This inductor can respond near the infrared waves that send of human body; For guaranteeing that this kind mode can well realize; Can be before this sensing device sheathed lens or other signal selector spares, make and can be responded to, the generation of avoiding other control to disturb simultaneously near the human body of this device top.

Below only to touch the electric capacity control mode and to combine above-mentioned explanation further to specify the concrete operations of this ability touch sensible control LED lamp: when finger touch arrives the touch electric capacity as touch sensitive piece 10; Changes in capacitance causes the IN end of first chip of signal acquisition module 20 to receive the signal of change of frequency; After the processing of this first chip; The OUT end of first chip is through resistance R 13 output low level data signals; Single-chip microcomputer CY8C21123 accepts this data signal, and the time that continues when this low level digital signal is between 0.5 second～2 seconds, and the CS of single-chip microcomputer CY8C21123 end sends the digital controlled signal of expression switch to the DIM of LM3404 chip end; When time that low level digital signal continues greater than 2.5 seconds; The CS of single-chip microcomputer CY8C21123 end to the DIM of LM3404 chip end send expression brightness adjustment digital controlled signal; And then control connection at the LED lamp body on the parts CN1 by bright cyclical variations between dark; Leave touch electric capacity up to finger, the LED lamp body rests on corresponding brilliance control output place.Based on the relevant parameter of each former device in the circuit and the consideration of related interference factors, the time that concrete data signal continues can be done corresponding different settings, and this setting is that present technique field personnel are familiar with and are convenient to operation very much.

But the concrete former device of more than listing and embodiment are merely preferred embodiment provided by the invention, and other relevant alternative components and parts also can carry out the function of open and close and brightness adjustment control to the LED lamp body according to what technical information realization provided by the invention was equal to.

In sum, protection scope of the present invention is not limited to the foregoing description, still all should belong to claimed scope of the present invention as for the change of component count described in this specification or the replacement of equivalent elements etc.

Claims

1. the LED lamp of ability touch sensible control; Comprise touch sensitive piece, drive circuit and connector; Connector and LED lamp body electrically connect, and it is characterized in that: the LED lamp of this ability touch sensible control further comprises signal acquisition module and control module, and the touch sensitive piece connects signal acquisition module; Signal acquisition module electrically connects control module; Control module is electrically connected with drive circuit, and drive circuit is electrically connected this connector, sends control signal after the touch sensitive piece is touched; This control signal converts the treatable data signal of control module to through signal gathering unit; Control module sends corresponding open and close or dimming control signal according to the data signal of accepting, and is to have, does not have or change the luminance with the LED lamp body of control connection on connector, described signal acquisition module employing chip ADA03N or chip IC M7555 from the control signal control drive circuit of control module to the output electric energy of connector;

When described signal acquisition module adopts chip ADA03N; Be connected with the 4th pin IN as the chip ADA03N of signal acquisition module as the touch sensible capacitor C N11 of touch sensitive piece, the 5th pin GND is connected in series a capacitor C 11, the five pin GND ground connection with the 4th pin IN; Be connected in series the RC circuit that is formed in parallel by resistance R 12 and capacitor C 12 between the 3rd pin Rb and the earth point; Be connected the positive pole that a resistance R 11, the second pin VDD are connected to the 5V dc source, the external resistance R 13 of the first pin OUT between the second pin VDD and the first pin OUT; Be connected with the input of control module through this resistance R 13, this resistance R 13 is as signal output part;

When described signal acquisition module adopts chip IC M7555; As being connected in series the circuit that is in series by resistance R 24 and capacitor C 25 between the second pin TRIG of the touch sensible capacitor C N24 of touch sensitive piece and the chip IC M7555 of this signal acquisition module and the 6th pin THOLD; Wherein this capacitor C 25 is connected with touch sensible capacitor C N24; The 7th pin SIDCHG also is connected to two resistance R 25 and R26, and a resistance R 26 is connected with the positive pole of direct current 5V power supply, and another resistance R 25 is serially connected with between the second pin TRIG and the 7th pin SIDCHG; Be connected with capacitor C 24 between the 6th pin THOLD and the earth point; The 3rd pin OUT is connected with control module as signal output part, the first pin GND ground connection, and the 4th pin RESET, the 5th pin CVOLT and the 8th pin VCC are vacant;

Said control module is realized through a single-chip microcomputer CY8C21123; Second pin of this single-chip microcomputer CY8C21123 is connected with the signal output part of signal acquisition module as signal input part; The 4th pin Vss ground connection of single-chip microcomputer CY8C21123; The 8th pin Vdd is connected with the positive pole of direct current 5V power supply, and each is connected with one drive circuit the 6th, the 7th pin as signal output part, and the first, the 3rd and the 5th pin of this single-chip microcomputer CY8C21123 is vacant;

Drive circuit comprises a chip LM3404 and the electronic devices and components that are connected with this chip LM3404; Be connected a resistance R 2 between the 3rd pin DIM of this chip LM3404 and the 7th pin of single-chip microcomputer CY8C21123; Be connected in series a resistance R 1 between the 8th pin VIN and the 6th pin RON; The 8th pin VIN is connected with the positive pole of direct current 24V power supply, is serially connected with two parallelly connected capacitor C 1 and C2 between the 8th pin VIN and the earth point, is serially connected with capacitor C 4 and unilateral diode D2 between the second pin BOOT and the earth point successively; The first pin SW is connected with first pin of connector; Be serially connected with an inductance L 1 between first pin of the first pin SW and connector, two resistance R 7 and the R6 that the series connection mode that is serially connected with is connected successively between first pin of connector and the earth point, the 5th pin CS of chip LM3404 is connected with the 3rd pin of connector; Three resistance R that are connected in parallel with each other 3, R4 and R5 are connected between the 5th pin CS and the earth point; Be connected in series a capacitor C 3, the four pin GND between the 7th pin VCC and the earth point and connect earth point, first pin of said connector is anodal tie point; Second pin of this connector is earth point, and the 3rd pin of this connector is the negative pole tie point.

2. according to claim 1 can touch sensible the LED lamp of control, it is characterized in that: the touch sensitive piece is for touching in electric capacity control, visible light induction control and the human body IR Passive induction control mode any one.

3. the LED lamp of ability touch sensible according to claim 1 control; It is characterized in that: the analog signal of signal acquisition module self-induction touch in the future piece changes into corresponding data signal; This data signal is sent to control module as control instruction; Control module adopts the PWM control mode further to control drive circuit, so make connector output electric current for have, it's too late, and electric current reduces three kinds of states.