CN106358335A - Sampling and holding type double-control energy-saving LED control system with stable level - Google Patents

Abstract

The invention discloses a sampling and holding type double-control energy-saving LED control system with stable level. The system is characterized by mainly comprising a single chip microcomputer, a buzzer, a power supply, a controller, a signal processing unit, a luminance transducer, an LED lamp connected with the controller as well as an infrared probe HW connected with the signal processing unit, wherein the buzzer, the power supply, the controller, the signal processing unit and the luminance transducer are connected with the single chip microcomputer; the signal processing unit comprises a processing chip U, a field-effect transistor MOS1, a triode VT3, a signal level regulating circuit, a sampling and holding circuit, a second-order filter and amplification circuit, a signal output conditioning circuit and the like. The system can control switching on and off of the LED lamp according to the turnover condition and the luminance condition in the use range of the LED lamp and can accurately analyze and process acquired turnover information, thereby guaranteeing accurate LED control.

Description

A kind of sampling maintenance energy-saving control system of led double control-type level equalization

Technical field

The present invention relates to the technical field of electronic equipment, specifically refer to a kind of sampling holding of led double control-type level equalization Type energy-saving control system.

Background technology

Led illuminating lamp has become as requisite electrical equipment in people's life now.But, adopt existing led illuminating lamp more Realize lamp is turned on and off with the mode of Non-follow control and the mode of acoustic control, that is, the mode of Non-follow control is by shell fragment Formula mechanical switch, to be turned on and off LED lamp, because this control mode cannot be realized automatically turning on or closes LED lamp, works as people Withdraw from a room for a long time, when forgetting to close illuminating lamp, will result in energy waste；And the mode of acoustic control is then by sound sensor Device is acquired to the sound in LED lamp range, and when sound transducer has collected sound, led etc. then can be lit, As long as this control mode has sound will light LED lamp in day and night when using in its span of control, this controlling party Formula can not according to LED lamp using the brightness of scope control the open and close of LED lamp, this just causes energy significant wastage.

Therefore it provides a kind of led energy-saving control system is the task of top priority.

Content of the invention

It is an object of the invention to overcoming LED lamp control system of the prior art can not be flowed according to ambient brightness and personnel Emotionally controlling the defect of the open and close of LED lamp, the present invention provides a kind of sampling of led double control-type level equalization to keep to condition Type energy-saving control system.

The present invention is achieved through the following technical solutions: a kind of sampling maintenance energy-conservation control of led double control-type level equalization System processed, mainly by single-chip microcomputer, the buzzer, power supply, controller, signal processing unit and the brightness that are all connected with single-chip microcomputer are passed Sensor, the LED lamp being connected with controller, and the infrared probe hw composition being connected with signal processing unit；Described letter Number processing unit by process chip u, field effect transistor mos1, audion vt3, positive pole is connected with the source electrode of field effect transistor mos1, The polar capacitor c6 that negative pole is connected with the base stage of audion vt3, one end is connected with the source electrode of field effect transistor mos1, the other end The resistance r7 being connected with the emitter stage of audion vt3, p pole is connected with the emitter stage of audion vt3, n pole is after resistance r8 The diode d3 being connected with the com pin of process chip u, one end be connected with the colelctor electrode of audion vt3 after ground connection, another Hold the inductance l2 that is connected with the com pin of process chip u, negative pole is connected with the drain electrode of field effect transistor mos1, positive pole and place The polar capacitor c7 that the cf pin of reason chip u is connected, is serially connected in the signal between the cm pin of process chip u and pwm pin Level adjustment circuit, the second-order filter amplifying circuit being connected with cm pin and the infrared probe hw of process chip u respectively, string Be connected on the sampling hold circuit between second-order filter amplifying circuit and the in pin of process chip u, and respectively with process chip u Pwm pin be connected with out pin and com pin signal output modulate circuit composition；Described field effect transistor mos1 Grid is connected with the cc pin of process chip u, its drain electrode is also connected with the cm pin of process chip u；Described audion vt3 Grounded collector；The gnd pin ground connection of described process chip u, its vs pin are then connected with outside 12v DC source；Institute State signal output modulate circuit to be connected with single-chip microcomputer.

Described signal level adjusts electric routing amplifier p4, amplifier p5, audion vt7, positive pole after resistance r25 with put The polar capacitor c18 that the positive pole of big device p4 is connected, negative pole is connected with the cm pin of process chip u, one end and amplifier p4 Negative pole be connected, inductance l3 that the other end is connected with the outfan of amplifier p4, negative pole is connected with the negative pole of amplifier p4 The polar capacitor c20 that after connecing, ground connection, positive pole are connected with the base stage of audion vt7 after resistance r27, one end is with amplifier p4's The resistance r26 that outfan is connected, the other end is connected with the base stage of audion vt7, positive pole after adjustable resistance r28 with amplification The polar capacitor c19 that the outfan of device p4 is connected, negative pole is connected with the positive pole of amplifier p5, p pole after resistance r29 with pole Property electric capacity c19 positive pole be connected, diode d9 that n pole is connected with the outfan of amplifier p5 after resistance r30, n pole with The outfan of amplifier p5 is connected, p pole is sequentially connected with the negative pole of amplifier p5 after resistance r31 through adjustable resistance r32 Diode d10, and positive pole be connected with the emitter stage of audion vt7 after ground connection, negative pole after resistance r33 with diode The polar capacitor c21 composition that the n pole of d10 is connected；The grounded collector of described audion vt7, its emitter stage also with adjustable electric Resistance r32 is connected with the junction point of resistance r31；The outfan of described amplifier p5 is also connected with the pwm pin of process chip u Connect.

Further, by amplifier p3, audion vt5, audion vt6, positive pole is through resistance r18 for described sampling hold circuit Be connected with the base stage of audion vt5 afterwards, polar capacitor c13, one end and pole that negative pole is connected with second-order filter amplifying circuit Property electric capacity c13 positive pole be connected, the other end ground connection resistance r19, positive pole colelctor electrode with audion vt5 after resistance r20 Be connected, the polar capacitor c16 of minus earth, negative pole be connected with the emitter stage of audion vt5 after ground connection, positive pole is through resistance The polar capacitor c14 being connected with the colelctor electrode of audion vt6 after r15, positive pole is connected with the grid of field effect transistor mos2, bears The polar capacitor c15 that pole is connected with the positive pole of amplifier p3 after resistance r21, p pole is connected with the positive pole of polar capacitor c13 Connect, diode d7 that n pole is connected with the source electrode of field effect transistor mos2 after resistance r16, the base stage phase of one end and audion vt6 Connect, the adjustable resistance r17 that is connected with the drain electrode of field effect transistor mos2 of the other end, the emitter stage phase of one end and audion vt6 The resistance r22 that connection, the other end are connected with the outfan of amplifier p3, p pole is connected with the positive pole of amplifier p3, n pole warp The diode d8 being connected with the outfan of amplifier p3 after resistance r23, and after negative pole is connected with the negative pole of amplifier p3 The polar capacitor c17 composition that ground connection, positive pole are connected with the outfan of amplifier p3 after resistance r24；Described amplifier p3's Outfan is also connected with the in pin of process chip u.

Described second-order filter amplifying circuit by amplifier p1, audion vt1, audion vt2, positive pole after resistance r3 with put The polar capacitor c2 that the positive pole of big device p1 is connected, negative pole is connected with infrared probe hw, the negative pole of positive pole and amplifier p1 Be connected, polar capacitor c4 that negative pole is connected with the base stage of audion vt1, one end is connected with the negative pole of amplifier p1, separately The resistance r4 that one end is connected with the base stage of audion vt1, positive pole is connected with the base stage of audion vt2, negative pole is through inductance l1 The polar capacitor c5 being connected with the negative pole of amplifier p1 afterwards, p pole is connected with the negative pole of polar capacitor c5 after resistance r6, n The diode d2 that pole is connected with the negative pole of amplifier p1 after resistance r5, positive pole is connected with the outfan of amplifier p1, bears The polar capacitor c3 that pole is connected with the negative pole of polar capacitor c13, p pole is connected with the positive pole of amplifier p1 after resistance r2, n The diode d1 that pole is connected with the negative pole of polar capacitor c3, and negative pole is connected with the positive pole of amplifier p1, positive pole warp can The polar capacitor c1 composition being connected with the n pole of diode d1 after adjusting resistance r1；The grounded collector of described audion vt1, its Emitter stage is connected with the n pole of diode d2；After the colelctor electrode of described audion vt2 is connected with the cm pin of process chip u Ground connection, its emitter stage are connected with the negative pole of polar capacitor c3.

By amplifier p2, audion vt4, positive pole is connected described signal output modulate circuit with the out pin of process chip u Connect, polar capacitor c9 that negative pole is connected with the positive pole of amplifier p2 after resistance r11, p pole after resistance r9 with audion vt4 Emitter stage be connected, diode d4 that n pole is connected with the outfan of amplifier p2 after adjustable resistance r10, positive pole and Polar capacitor c8, p pole and the process of ground connection after the emitter stage of audion vt4 is connected, negative pole is connected with the p pole of diode d4 The diode d5 that the pwm pin of chip u is connected, n pole is connected with the base stage of audion vt4, positive pole is after resistance r13 with three The colelctor electrode of pole pipe vt4 is connected, the polar capacitor c11 of minus earth, p pole negative pole phase with amplifier p2 after resistance r12 Connect, the diode d6 that is connected of the outfan of n pole amplifier p2, positive pole is connected with the outfan of amplifier p2, negative pole and The polar capacitor c10 that single-chip microcomputer is connected, and positive pole be connected with amplifier p2 outfan after resistance r14, negative pole with put The polar capacitor c12 composition that the negative pole of big device p2 is grounded after being connected；The negative pole of described polar capacitor c9 also respectively with process core The com pin of piece u is connected with the emitter stage of audion vt4.

For guaranteeing the practical effect of the present invention, described process chip u then preferentially employs to be come for ad736 integrated chip Realize.Described infrared probe hw is kr-p900 Radix Rumiciss infrared probe simultaneously.

The present invention compared with prior art has advantages below and a beneficial effect:

(1) present invention can be by the brightness feelings in the flow of personnel situation and its range in LED lamp range Condition the open and close of LED lamp are controlled, and the present invention accurately can be divided to the flow of personnel information of collection Analysis is processed, and makes the present invention that the open and close of LED lamp are controlled more accurate, ensures that the present invention can standard be controlled to led System, can preferably realize requirement to led control system in terms of energy-conservation for the people.

(2) present invention can be eliminated to the interference signal in receipt signal or be suppressed, and make the signal of telecommunication more steady；And The present invention can also limit to the bandwidth of viewdata signal, to filter the High-frequency Interference in viewdata signal and spike hair Thorn, and the High-frequency Interference in viewdata signal is filtered, make viewdata signal cleaner, more steady, effectively Improve the accuracy to signal processing for the present invention, ensure that the present invention can standard be controlled to led.

(3) present invention can be adjusted to the dutycycle of square wave in converting analogue signals, after so that analogue signal is changed Data signal is more stable and more accurate, thus improve the accuracy to signal processing for the present invention, simultaneously it is ensured that the present invention couple Led opens and closes the accuracy controlling.

(4) present invention can carry out constant, effectively guarantee simulation by the level value during by conversion to analogue signal The precision of signal conversion, can make the analogue signal of the input signal level before being changed keep stable, ensure that this The bright accuracy to signal processing, effectively raises the accuracy opening and closing control to led for the present invention.

(5) infrared probe of the present invention is kr-p900 type Radix Rumiciss infrared probe, and this infrared probe can carry out Radix Rumiciss 180 ° of detection, it has the advantages that accuracy height, sensitivity are strong, thus it is ensured that the present invention is to LED lamp range personnel The accuracy of monitoring.

Brief description

Fig. 1 is the overall structure block diagram of the present invention.

Fig. 2 is the electrical block diagram of the signal processing unit of the present invention.

Fig. 3 is the electrical block diagram of the sampling hold circuit of the present invention.

Fig. 4 is the electrical block diagram of the signal level regulation circuit of the present invention.

Specific embodiment

With reference to embodiment, the present invention is described in further detail, but embodiments of the present invention not limited to this.

As shown in figure 1, the present invention is mainly by single-chip microcomputer, the buzzer being all connected with single-chip microcomputer, power supply, controller, letter Number processing unit and luminance sensor, the LED lamp being connected with controller, and the infrared ray being connected with signal processing unit Probe hw composition.

For guaranteeing the reliability service of the present invention, described single-chip microcomputer preferentially to be realized using fm8pe59a single-chip microcomputer.Should The ti0 pin of fm8pe59a single-chip microcomputer is connected with buzzer, and pin0 pin is connected with signal processing unit, pin1 pin with Luminance sensor is connected, and pout1 pin is connected with controller, and pvc pin is connected with power supply.Described power supply is 12v DC voltage, this 12v DC voltage is powered for whole control system.

During operation, described luminance sensor preferentially to be realized using ra-1805no luminance sensor；This ra-1805no It is provided with photoconductive resistance, when this luminance sensor detects to brightness, environment has photoconductive resistance during brightness in luminance sensor Resistance becomes big, i.e. luminance sensor output low current signal；When luminance sensor detects to brightness, environment does not have brightness When photoconductive resistance resistance diminish, i.e. luminance sensor output HIGH current signal.This luminance sensor is used for monitoring LED lamp use In the range of ambient brightness, and corresponding current signal is exported to single according to the ambient brightness in the led range of monitoring Piece machine,.Meanwhile, the infrared probe hw of the present invention is kr-p900 Radix Rumiciss infrared probe, and this infrared probe can be to LED lamp Range carry out the detection of 180 ° of Radix Rumiciss, detect to having or not personnel in LED lamp range, this infrared probe Simultaneously by the information transfer detecting to signal processing unit, this signal processing unit is carried out to the interference signal in receipt signal Eliminate or suppress, make the signal of telecommunication more steady；And the present invention can also limit to the bandwidth of viewdata signal, to filter High-frequency Interference in viewdata signal and spike burr, and the High-frequency Interference in viewdata signal is filtered, make Viewdata signal is cleaner, more steady；This signal processing unit is then by the signal conversion image data signal transmission after processing To single-chip microcomputer.The infrared probe hw of the present invention and luminance sensor are collectively forming a dual-switch.

The present invention use when, single-chip microcomputer receive infrared probe hw transmission for someone in LED lamp range When interior, single-chip microcomputer receive low current signal when will not output control signal to controller, LED lamp also will not be unlocked. Only in luminance sensor transmission be high current signal and infrared probe hw monitors the information simultaneous transmission of someone to single During piece machine, single-chip microcomputer just understands output control voltage to controller, controller just outputting drive voltage, and LED lamp is just unlocked.Work as people When leaving the investigative range that infrared probe hw visits, infrared probe is visited hw and this signal is fed back to single-chip microcomputer, at this moment single-chip microcomputer Output control electric current begins to send out prompting sound to buzzer, buzzer, and this prompting sound is used for reminding people's LED lamp will automatically close Close, this single-chip microcomputer is then automatically stopped to LED lamp output current after buzzer works 3 seconds, and now LED lamp is closed, simultaneously single Piece machine also can return to the state of reopening.

Wherein, described signal processing unit is as shown in Fig. 2 described signal processing unit is by process chip u, field effect transistor Mos1, audion vt3, resistance r7, resistance r8, polar capacitor c6, polar capacitor c7, inductance l2, diode d3, signal level is adjusted Economize on electricity road, sampling hold circuit, second-order filter amplifying circuit, and signal output modulate circuit composition.

During connection, the positive pole of polar capacitor c6 is connected with the source electrode of field effect transistor mos1, the base of negative pole and audion vt3 Pole is connected.One end of resistance r7 is connected with the source electrode of field effect transistor mos1, and the other end is connected with the emitter stage of audion vt3 Connect.The p pole of diode d3 is connected with the emitter stage of audion vt3, n pole com pin phase with process chip u after resistance r8 Connect.One end of inductance l2 is grounded after being connected with the colelctor electrode of audion vt3, the com pin phase of the other end and process chip u Connect.

Meanwhile, the negative pole of polar capacitor c7 is connected with the drain electrode of field effect transistor mos1, the cf pipe of positive pole and process chip u Foot is connected.Signal level adjusts circuit and is serially connected between the cm pin of process chip u and pwm pin.Second-order filter amplifies electricity Road is connected with the cm pin of process chip u and infrared probe hw respectively.Sampling hold circuit is serially connected in second-order filter and amplifies Between the in pin of circuit and process chip u.Signal output modulate circuit pwm pin and the out pin with process chip u respectively And com pin is connected.

The grid of described field effect transistor mos1 is connected with the cc pin of process chip u, its drain electrode also with process chip u Cm pin is connected；The grounded collector of described audion vt3；The gnd pin ground connection of described process chip u, its vs pin is then It is connected with outside 12v DC source；Described signal output modulate circuit is connected with single-chip microcomputer.

During enforcement, for guaranteeing the practical effect of the present invention, described process chip u then preferentially employs as ad736 collection Chip is become to realize.Described field effect transistor mos1, audion vt3, resistance r7, resistance r8, polar capacitor c6, polar capacitor c7, Inductance l2 and diode d3 forms high impedance device, and this high impedance device can be eliminated to the electromagnetic interference signal in signal or press down System.The signal output part that the input of described second-order filter amplifying circuit visits hw with infrared probe is connected；And signal output The outfan of modulate circuit is then connected with the pin0 pin of fm8pe59a single-chip microcomputer.

Further, described second-order filter amplifying circuit is by amplifier p1, audion vt1, audion vt2, adjustable resistance R1, resistance r2, resistance r3, resistance r4, resistance r5, resistance r6, polar capacitor c1, polar capacitor c2, polar capacitor c3, polarity electricity Hold c4, polar capacitor c45, inductance l1, diode d1, and diode d2 composition.

During connection, the positive pole of polar capacitor c2 is connected with the positive pole of amplifier p1 after resistance r3, negative pole and infrared ray Probe hw is connected.The positive pole of polar capacitor c4 is connected with the negative pole of amplifier p1, and negative pole is connected with the base stage of audion vt1 Connect.One end of resistance r4 is connected with the negative pole of amplifier p1, and the other end is connected with the base stage of audion vt1.Polar capacitor The positive pole of c5 is connected with the base stage of audion vt2, and negative pole is connected with the negative pole of amplifier p1 after inductance l1.

Wherein, the p pole of diode d2 is connected with the negative pole of polar capacitor c5 after resistance r6, n pole after resistance r5 with The negative pole of amplifier p1 is connected.The positive pole of polar capacitor c3 is connected with the outfan of amplifier p1, negative pole and polar capacitor The negative pole of c13 is connected.The p pole of diode d1 is connected with the positive pole of amplifier p1 after resistance r2, n pole and polar capacitor c3 Negative pole be connected.The negative pole of polar capacitor c1 is connected with the positive pole of amplifier p1, positive pole after adjustable resistance r1 with two poles The n pole of pipe d1 is connected.

The grounded collector of described audion vt1, its emitter stage is connected with the n pole of diode d2；Described audion vt2 Colelctor electrode be connected with the cm pin of process chip u after ground connection, its emitter stage is connected with the negative pole of polar capacitor c3.

Further, described signal output modulate circuit is by amplifier p2, audion vt4, resistance r9, adjustable resistance R10, resistance r11, resistance r12, resistance r13, resistance r14, polar capacitor c9, polar capacitor c10, polar capacitor c11, polarity electricity Hold c12, diode d4, diode d5, and diode d6 composition.

During connection, the positive pole of polar capacitor c9 is connected with the out pin of process chip u, negative pole after resistance r11 with put The positive pole of big device p2 is connected.The p pole of diode d4 is connected with the emitter stage of audion vt4 after resistance r9, and n pole is through adjustable It is connected with the outfan of amplifier p2 after resistance r10.The positive pole of polar capacitor c8 with the emitter stage of audion vt4 be connected Connect, negative pole is grounded after being connected with the p pole of diode d4.

Meanwhile, the p pole of diode d5 is connected with the pwm pin of process chip u, and n pole is connected with the base stage of audion vt4 Connect.The positive pole of polar capacitor c11 is connected with the colelctor electrode of audion vt4 after resistance r13, minus earth.The p of diode d6 Pole is connected with the negative pole of amplifier p2 after resistance r12, and the outfan of n pole amplifier p2 is connected.Polar capacitor c10 is just Pole is connected with the outfan of amplifier p2, and negative pole is connected with the pin0 pin of fm8pe59a single-chip microcomputer.Polar capacitor c12's Positive pole is connected with amplifier p2 outfan after resistance r14, and negative pole is grounded after being connected with the negative pole of amplifier p2.Described pole The negative pole of property electric capacity c9 is also connected with the com pin of process chip u and the emitter stage of audion vt4 respectively.

As shown in figure 3, described sampling hold circuit is by amplifier p3, audion vt5, audion vt6, field effect transistor Mos2, resistance r15, resistance r16, adjustable resistance r17, resistance r18, resistance r19, resistance r20, resistance r21, resistance r22, resistance R23, resistance r24, polar capacitor c13, polar capacitor c14, polar capacitor c15, polar capacitor c16, polar capacitor c17, two poles Pipe d7, and diode d8 composition.

During connection, the positive pole of polar capacitor c13 is connected with the base stage of audion vt5 after resistance r18, negative pole and second order Filter amplification circuit is connected.One end of resistance r19 is connected with the positive pole of polar capacitor c13, and the other end is grounded.Polar capacitor The positive pole of c16 is connected with the colelctor electrode of audion vt5 after resistance r20, minus earth.

Wherein, it is grounded after the negative pole of polar capacitor c14 is connected with the emitter stage of audion vt5, positive pole is after resistance r15 It is connected with the colelctor electrode of audion vt6.The positive pole of polar capacitor c15 is connected with the grid of field effect transistor mos2, negative pole warp It is connected with the positive pole of amplifier p3 after resistance r21.The p pole of diode d7 is connected with the positive pole of polar capacitor c13, n pole warp It is connected with the source electrode of field effect transistor mos2 after resistance r16.One end of adjustable resistance r17 is connected with the base stage of audion vt6, The other end is connected with the drain electrode of field effect transistor mos2.

Meanwhile, one end of resistance r22 is connected with the emitter stage of audion vt6, the outfan of the other end and amplifier p3 It is connected.The p pole of diode d8 is connected with the positive pole of amplifier p3, n pole outfan phase with amplifier p3 after resistance r23 Connect.The negative pole of polar capacitor c17 is grounded after being connected with the negative pole of amplifier p3, positive pole after resistance r24 with amplifier p3 Outfan be connected.The outfan of described amplifier p3 is also connected with the in pin of process chip u.

Audion vt4 in the sampling hold circuit of the present invention and audion vt5 defines a feedback loop, polar capacitor C14 is included in feedback loop, thus voltage can be kept to have higher precision and the linearity.Amplifier p3 is used for exporting pulse, field Effect pipe mos2 is used for sampling and keeps switching, that is, keep polar capacitor c14 storage sampled signal information.Thus this sampling keeps electricity Road can carry out constant, the effectively precision of guarantee analogue signal conversion by the level value during by conversion to analogue signal, The analogue signal of the input signal level before being changed can be made to keep stable, ensure that the standard to signal processing for the present invention Really property, effectively raises the accuracy opening and closing control to led for the present invention.

As shown in figure 4, described signal level adjusts electric routing amplifier p4, amplifier p5, audion vt7, resistance r25, Resistance r26, resistance r27, adjustable resistance r28, resistance r29, resistance r30, resistance r31, adjustable resistance r32, resistance r33, polarity Electric capacity c18, polar capacitor c19, polar capacitor c20, polar capacitor c21, diode d9, diode d10, and inductance l3 group Become.

During connection, the positive pole of polar capacitor c18 is connected with the positive pole of amplifier p4 after resistance r25, negative pole and process The cm pin of chip u is connected.One end of inductance l3 is connected with the negative pole of amplifier p4, the output of the other end and amplifier p4 End is connected, the negative pole of polar capacitor c20 be connected with the negative pole of amplifier p4 after ground connection, positive pole after resistance r27 with three poles The base stage of pipe vt7 is connected.

Wherein, one end of resistance r26 is connected with the outfan of amplifier p4, the base stage phase of the other end and audion vt7 Connect.The positive pole of polar capacitor c19 is connected with the outfan of amplifier p4 after adjustable resistance r28, negative pole and amplifier p5 Positive pole be connected.Meanwhile, the p pole of diode d9 is connected with the positive pole of polar capacitor c19 after resistance r29, and n pole is through resistance It is connected with the outfan of amplifier p5 after r30.

Meanwhile, the n pole of diode d10 is connected with the outfan of amplifier p5, and p pole is sequentially through adjustable resistance r32 and electricity It is connected with the negative pole of amplifier p5 after resistance r31.The positive pole of polar capacitor c21 is connected with the emitter stage of audion vt7 and is followed by Ground, negative pole is connected with the n pole of diode d10 after resistance r33.The grounded collector of described audion vt7, its emitter stage is also It is connected with the junction point of resistance r31 with adjustable resistance r32；The outfan of described amplifier p5 is also managed with the pwm of process chip u Foot is connected.

During operation, this signal level adjusts circuit by changing the resistance of adjustable resistance r28 and adjustable resistance r32 come to letter The regulation of number level, and by the double operational big device that amplifier p4 and amplifier p5 is formed, signal level is amplified, make letter The intensity of number level increases, and can effectively suppress extraneous Electromagnetic Interference, make signal level more stable, and this circuit is also The dutycycle of square wave in converting analogue signals can be adjusted, the data signal after making analogue signal change is more stable and more Accurately, thus improve the accuracy to signal processing for the present invention, simultaneously it is ensured that the open and close control to led for the present invention The accuracy of system.

The signal processing unit of the present invention can be eliminated to the interference signal in receipt signal or be suppressed, and make the signal of telecommunication more Plus steadily；And the present invention can also limit to the bandwidth of viewdata signal, to filter the high frequency in viewdata signal Interference and spike burr, and the High-frequency Interference in viewdata signal is filtered, make viewdata signal cleaner, more Steadily, effectively raise the accuracy to signal processing for the present invention, ensure that the present invention can standard be controlled to led.

As described above, just can be very good to realize the present invention.

Claims (7)

1. a kind of sampling maintenance energy-saving control system of led double control-type level equalization it is characterised in that main by single-chip microcomputer, Buzzer, power supply, controller, signal processing unit and the luminance sensor being all connected with single-chip microcomputer, is connected with controller LED lamp, and be connected with signal processing unit infrared probe hw composition；Described signal processing unit is by process chip U, field effect transistor mos1, audion vt3, positive pole is connected with the source electrode of field effect transistor mos1, the base stage of negative pole and audion vt3 The polar capacitor c6 being connected, one end is connected with the source electrode of field effect transistor mos1, the emitter stage phase of the other end and audion vt3 The resistance r7 connecting, p pole is connected with the emitter stage of audion vt3, n pole com pin phase with process chip u after resistance r8 The diode d3 connecting, one end is grounded after being connected with the colelctor electrode of audion vt3, the com pin of the other end and process chip u The inductance l2 being connected, negative pole is connected with the drain electrode of field effect transistor mos1, positive pole is connected with the cf pin of process chip u Polar capacitor c7, the signal level being serially connected between the cm pin of process chip u and pwm pin adjusts circuit, respectively with process The second-order filter amplifying circuit that the cm pin of chip u is connected with infrared probe hw, be serially connected in second-order filter amplifying circuit with Sampling hold circuit between the in pin of process chip u, and respectively with the pwm pin of process chip u and out pin and The signal output modulate circuit composition that com pin is connected；The grid of described field effect transistor mos1 and the cc pin of process chip u It is connected, its drain electrode is also connected with the cm pin of process chip u；The grounded collector of described audion vt3；Described process core The gnd pin ground connection of piece u, its vs pin are then connected with outside 12v DC source；Described signal output modulate circuit and monolithic Machine is connected.

2. the sampling maintenance energy-saving control system of a kind of led double control-type level equalization according to claim 1, its feature Be, described signal level adjusts electric routing amplifier p4, amplifier p5, audion vt7, positive pole after resistance r25 with amplification The polar capacitor c18 that the positive pole of device p4 is connected, negative pole is connected with the cm pin of process chip u, one end is with amplifier p4's The inductance l3 that negative pole is connected, the other end is connected with the outfan of amplifier p4, negative pole is connected with the negative pole of amplifier p4 The polar capacitor c20 that ground connection, positive pole are connected with the base stage of audion vt7 after resistance r27 afterwards, one end is defeated with amplifier p4's Go out end be connected, resistance r26 that the other end is connected with the base stage of audion vt7, positive pole after adjustable resistance r28 with amplifier The polar capacitor c19 that the outfan of p4 is connected, negative pole is connected with the positive pole of amplifier p5, p pole after resistance r29 with polarity The diode d9 that the positive pole of electric capacity c19 is connected, n pole is connected with the outfan of amplifier p5 after resistance r30, n pole with put The outfan of big device p5 is connected, p pole is sequentially connected with the negative pole of amplifier p5 after resistance r31 through adjustable resistance r32 Diode d10, and positive pole be connected with the emitter stage of audion vt7 after ground connection, negative pole after resistance r33 with diode d10 N pole be connected polar capacitor c21 composition；The grounded collector of described audion vt7, its emitter stage also with adjustable resistance R32 is connected with the junction point of resistance r31；The outfan of described amplifier p5 is also connected with the pwm pin of process chip u.

3. the sampling maintenance energy-saving control system of a kind of led double control-type level equalization according to claim 2, its feature Be, described sampling hold circuit by amplifier p3, audion vt5, audion vt6, positive pole after resistance r18 with audion The polar capacitor c13 that the base stage of vt5 is connected, negative pole is connected with second-order filter amplifying circuit, one end is with polar capacitor c13's Positive pole is connected, the resistance r19 of other end ground connection, and positive pole is connected with the colelctor electrode of audion vt5 after resistance r20, negative pole Ground connection polar capacitor c16, negative pole be connected with the emitter stage of audion vt5 after be grounded, positive pole after resistance r15 with audion The polar capacitor c14 that the colelctor electrode of vt6 is connected, positive pole is connected with the grid of field effect transistor mos2, negative pole is after resistance r21 The polar capacitor c15 being connected with the positive pole of amplifier p3, p pole is connected with the positive pole of polar capacitor c13, n pole is through resistance r16 The diode d7 being connected with the source electrode of field effect transistor mos2 afterwards, one end is connected with the base stage of audion vt6, the other end and field The adjustable resistance r17 that the drain electrode of effect pipe mos2 is connected, one end is connected with the emitter stage of audion vt6, the other end with put The resistance r22 that the outfan of big device p3 is connected, p pole is connected with the positive pole of amplifier p3, n pole after resistance r23 with amplification The diode d8 that the outfan of device p3 is connected, and negative pole be connected with the negative pole of amplifier p3 after ground connection, positive pole is through resistance The polar capacitor c17 composition being connected with the outfan of amplifier p3 after r24；The outfan of described amplifier p3 also with process core The in pin of piece u is connected.

4. the sampling maintenance energy-saving control system of a kind of led double control-type level equalization according to claim 3, its feature Be, described second-order filter amplifying circuit by amplifier p1, audion vt1, audion vt2, positive pole after resistance r3 with amplification The polar capacitor c2 that the positive pole of device p1 is connected, negative pole is connected with infrared probe hw, the negative pole phase of positive pole and amplifier p1 Connect, the polar capacitor c4 that is connected with the base stage of audion vt1 of negative pole, one end is connected with the negative pole of amplifier p1, another Hold the resistance r4 being connected with the base stage of audion vt1, positive pole is connected with the base stage of audion vt2, negative pole is after inductance l1 The polar capacitor c5 being connected with the negative pole of amplifier p1, p pole is connected with the negative pole of polar capacitor c5 after resistance r6, n pole The diode d2 being connected with the negative pole of amplifier p1 after resistance r5, positive pole is connected with the outfan of amplifier p1, negative pole The polar capacitor c3 being connected with the negative pole of polar capacitor c13, p pole is connected with the positive pole of amplifier p1 after resistance r2, n pole The diode d1 being connected with the negative pole of polar capacitor c3, and negative pole is connected with the positive pole of amplifier p1, positive pole is through adjustable The polar capacitor c1 composition being connected with the n pole of diode d1 after resistance r1；The grounded collector of described audion vt1, its Emitter-base bandgap grading is connected with the n pole of diode d2；The colelctor electrode of described audion vt2 is connected with the cm pin of process chip u and is followed by Ground, its emitter stage are connected with the negative pole of polar capacitor c3.

5. the sampling maintenance energy-saving control system of a kind of led double control-type level equalization according to claim 4, its feature Be, described signal output modulate circuit by amplifier p2, audion vt4, positive pole is connected with the out pin of process chip u, The polar capacitor c9 that negative pole is connected with the positive pole of amplifier p2 after resistance r11, p pole is after resistance r9 with audion vt4's The diode d4 that emitter stage is connected, n pole is connected with the outfan of amplifier p2 after adjustable resistance r10, positive pole and three The polar capacitor c8 of ground connection after the emitter stage of pole pipe vt4 is connected, negative pole is connected with the p pole of diode d4, p pole and process core The diode d5 that the pwm pin of piece u is connected, n pole is connected with the base stage of audion vt4, positive pole after resistance r13 with three poles The colelctor electrode of pipe vt4 is connected, the polar capacitor c11 of minus earth, and p pole is connected with the negative pole of amplifier p2 after resistance r12 Connect, diode d6 that the outfan of n pole amplifier p2 is connected, positive pole is connected with the outfan of amplifier p2, negative pole and list The polar capacitor c10 that piece machine is connected, and positive pole be connected with amplifier p2 outfan after resistance r14, negative pole and amplification The polar capacitor c12 composition that the negative pole of device p2 is grounded after being connected；The negative pole of described polar capacitor c9 also respectively with process chip u Com pin be connected with the emitter stage of audion vt4.

6. the sampling maintenance energy-saving control system of a kind of led double control-type level equalization according to claim 5, its feature It is, described process chip u is ad736 integrated chip.

7. the sampling maintenance energy-saving control system of a kind of led double control-type level equalization according to claim 6, its feature It is, described infrared probe hw is kr-p900 Radix Rumiciss infrared probe.