CN102843809A - Human body movement induced dimming control device - Google Patents
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Abstract
The invention provides a human body movement induced dimming control device. The device comprises a signal collecting module, a signal processing module and an output control module, wherein the signal collecting module detects human body activity in the induction range through an infrared induction unit, converts the detected infrared signals into voltage signals, and then outputs the signals to the signal processing module; the signal processing module is used for receiving the voltage signals output by the signal collecting module and outputting switch control signals to the output control module; the output control module comprises a switching unit and a switch circuit unit; the switching unit is provided with a first gear; the switch circuit unit is provided with a first connecting terminal connected with the positive electrode of a lamp tube, a second connecting terminal connected with a feedback resistor of a lamp tube drive circuit, and a third connecting terminal connected with the negative electrode of the lamp tube; and when the switching unit is switched to the first gear, the signal processing module is switched on and outputs the switch control signals to control the on/off of the switch circuit unit. The dimming control device provided by the invention has the advantages of low cost and little loss.
Description
Technical field
The invention belongs to lighting field, relate in particular to a kind of human body and move the induction light adjusting and controlling device.
Background technology
LED infrared induction lamp generally is built-in with three big functional modules: infrared induction module, photoinduction module and delay switch module.In this three big module of LED infrared induction lamp, the photoinduction module at first detects the illumination of light, and whether decision is awaited orders each module of LED infrared induction lamp and locked.
The LED sense light is mainly used in the place that people such as corridor, elevator, parking lot often do not occur now, and it is a variety of that its light regulating technology has, such as infrared induction, light-operated acoustic control in addition.To the infrared induction light regulating technology, be provided with the infrared induction module in the LED sense light, movable in the induction range of human body entering light fixture, the infrared induction module will start and detect signal, and signal triggering delay switch module is opened LED infrared induction lamp.If it is movable that someone continues in its induction range, LED infrared induction lamp is with Chang Liang; After in the people leaves its induction range, LED infrared induction lamp will be closed automatically.
But the light adjusting circuit of existing LED infrared induction lamp need use more chip and powerful device to realize, has cost height, problem that loss is big.
Summary of the invention
The purpose of this invention is to provide a kind of human body and move the induction light adjusting and controlling device, need not use more chip and powerful device to realize having the advantage that cost is low, loss is little.
The objective of the invention is to realize through following technical scheme:
A kind of human body moves the induction light adjusting and controlling device, comprising:
Signal acquisition module detects the physical activity in the induction range through the infrared induction parts, exports signal processing module to after converting detected infrared signal to voltage signal;
Signal processing module is used to receive the voltage signal that signal acquisition module is exported, and output switch control signal is to output control module;
Output control module comprises switch switching unit and switching circuit unit, and said switch switching unit has first gear; Said switching circuit unit has and anodal first link, second link that is connected with the feedback resistance of lamp tube drive circuit that is connected of fluorescent tube and the 3rd link that is connected with the fluorescent tube negative pole; When said switch switching unit switched to first gear, said signal processing module was switched on and output switch control signal, is used for the conducting and the shutoff of control switch circuit unit.
Human body provided by the invention moves in the induction light adjusting and controlling device; Said signal acquisition module is the infrared induction parts; Said signal processing module is a control chip, and output control module is that switch switching unit and switching circuit unit constitute, and compares more chip of available technology adopting and high power device are realized light modulation such as big inductance control; It greatly reduces cost, and loss simultaneously is little.
Description of drawings
Fig. 1 is that the human body that the embodiment of the invention provides moves the schematic diagram of responding to light adjusting and controlling device.
Fig. 2 is the circuit diagram of the switching circuit unit that provides of the embodiment of the invention.
Fig. 3 is the structure chart of the switch switching unit that provides of the embodiment of the invention.
Fig. 4 is the circuit diagram of the fluorescent tube output that provides of the embodiment of the invention.
Embodiment
Clearer for technical problem, technical scheme and beneficial effect that the present invention is solved, below in conjunction with embodiment, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
Please refer to shown in Figure 1ly, a kind of human body moves the induction light adjusting and controlling device, comprising:
Wherein, the inductive head PIR of said infrared induction parts makes with pyroelectricity material, and its temperature sense to external world is very sensitive.When having the people to walk about in the induction range of hot outer induction parts; The infrared induction parts will receive the infrared signal of Strength Changes; And the voltage signal that the infrared signal that changes can make pyroelectricity material change; The inner metal-oxide-semiconductor of infrared induction head PIR can tentatively amplify by the voltage signal that this is faint, and then exports to signal processing module.As a kind of concrete execution mode; Said infrared induction parts have three pins; First pin (for example+5V) is connected with the power supply of light adjusting and controlling device; Second the direct ground connection of pin, the voltage signal after induction of the 3rd pin handle and the conversion is sent to the first input end of signal processing module.
Wherein, said fluorescent tube moves the LED infrared induction lamp of induction light adjusting and controlling device control for human body of the present invention, and said LED infrared induction light fixture has positive pole, negative pole and drive circuit feedback resistance link.When said switch switching unit switched to first gear, said signal processing module was switched on, and promptly signal processing module is controlled by first gear, formed electrical connection with first gear; When switch switching unit switched to first gear, signal processing module was in normal operating conditions, can carry out the reception and the output services of signal.
In the present invention, when said switch switching unit switches to first gear, signal processing module 12 operate as normal; When signal acquisition module 11 detects the infrared signal of variation, through conversion of signals with after amplifying, voltage signal to the signal processing module 12 that output changes; After signal processing module 12 receives the voltage signal of variation, switch controlling signal to the output control module 13 of a high level of output; After switching circuit unit in the output control module 13 received the switch controlling signal of high level, the switching circuit unit promptly formed conducting state, thereby the power output of the fluorescent tube (LED infrared induction lamp) that control is connected with the switching circuit unit increases.On the contrary, when signal acquisition module 11 did not detect the infrared signal of variation, through conversion of signals with after amplifying, output did not have voltage signal to the signal processing module 12 of variation; Signal processing module 12 is exported low level switch controlling signal a to output control module 13 after receiving the voltage signal that does not have to change; After switching circuit unit in the output control module 13 received low level switch controlling signal, the switching circuit unit promptly formed off state, thereby the power output of the fluorescent tube (LED infrared induction lamp) that control is connected with the switching circuit unit is constant.Move in the induction light adjusting and controlling device at human body of the present invention, through fluorescent tube (LED infrared induction lamp) power output is increased or constant control, realized making fluorescent tube to be in blast or the constant state of brightness just, made things convenient for passing by and throwing light on of pedestrian.
Human body provided by the invention moves in the induction light adjusting and controlling device; Said signal acquisition module is the infrared induction parts; Said signal processing module is a control chip, and output control module is that switch switching unit and switching circuit unit constitute, and compares more chip of available technology adopting and high power device are realized light modulation such as big inductance control; It greatly reduces cost, and loss simultaneously is little.
Human body provided by the invention moves the induction light adjusting and controlling device and also comprises power regulator module; The input of power regulator module is connected with second link with first link of switch switching unit, and the output of power regulator module is connected with signal processing module with signal acquisition module.As a kind of concrete execution mode; It is the main body control chip of LM5007 that said power regulator module adopts model; The VIN pin of said chip is connected with first link of switch switching unit; The RTN pin is connected with second link of switch switching unit, and the SW pin is given signal acquisition module 11 and signal processing module 12 with being used to after an inductance element is connected export through the supply voltage after the voltage stabilizing, to realize the stable power-supplying to signal acquisition module 11 and signal processing module 12.Certainly, said power regulator module can also adopt other existing chip and circuit to constitute, and for those skilled in the art's conventional design circuit, no longer enumerates at this.But in the present embodiment; The annexation of power regulator module and switch switching unit importantly, promptly signal acquisition module 11 and signal processing module 12 use low-voltage power supply through directly power taking from the load end fluorescent tube behind the power regulator module; Need be from power taking on the electric main of 220V; The needed components and parts of whole device are significantly reduced, and then reduce energy loss and circuit cost, the life-span of components and parts is longer.If according to the directly power taking from the electric main of 220V of existing circuit structure; Voltage after over commutation, filtering is a direct voltage about 310V; At least need a reduction voltage circuit to reduce to the required voltage of chip (for example 5V) to voltage; The amplitude of step-down this moment is very big, and efficient is just very low, and the loss ratio present embodiment is much bigger.
Said switch switching unit has second gear, and when said switch switching unit switched to second gear, said second gear was connected with the switching circuit unit, and said signal processing module is de-energized, and conducting is forced in the switching circuit unit.Particularly, when said switch switching unit switched to second gear, said signal processing module was de-energized, and did not form electrical connection with second gear; When switch switching unit switched to second gear, signal processing module was in off position, can't carry out the reception and the output services of signal.At this moment, second gear is electrically connected with switching circuit unit formation, and the switching circuit unit is forced and adds high level; Cause the switching circuit unit to be forced conducting; At this moment no matter there is nobody in the induction range of infrared induction parts, to move, the power output of fluorescent tube (LED infrared induction lamp) all can increase, and has realized making fluorescent tube to be in the state of blast always; Be applied to solution of emergent event and need let the situation of fluorescent tube blast in long-time, made things convenient for pedestrian's illumination.
Preferably, said switch switching unit also has third gear, and when said switch switching unit switched to third gear, said third gear was connected with the switching circuit unit, and said signal processing module is de-energized, and the switching circuit unit is forced to turn-off.Particularly, when said switch switching unit switched to third gear, said signal processing module was de-energized, and did not form electrical connection with third gear; When switch switching unit switched to third gear, signal processing module was in off position, can't carry out the reception and the output services of signal.At this moment, third gear is electrically connected with switching circuit unit formation, and the switching circuit unit is forced and adds low level; Cause the switching circuit unit to be forced shutoff; At this moment no matter there is nobody in the induction range of infrared induction parts, to move, the power output of fluorescent tube (LED infrared induction lamp) all can be constant, realized making fluorescent tube to be in the constant state of brightness always; Be applied to solution of emergent event and need let fluorescent tube constant situation of brightness in long-time, saved energy consumption.
Please refer to shown in Figure 2; Said switching circuit unit comprises first switching tube (Q1), second switch pipe (Q2), the 3rd switching tube (Q3), first resistance (R1), second resistance (R2), the 3rd resistance (R3), the 4th resistance (R4) and first electric capacity (C1); Wherein, One end of said first resistance (R1) is connected with the drain electrode of first switching tube (Q1); The other end of first resistance (R1) is as the 3rd link of switching circuit unit, the source ground of first switching tube (Q1), and grid is connected with an end of first electric capacity (C1), an end of the 4th resistance (R4), an end of the 3rd resistance (R3) and the emitter of the 3rd switching tube (Q3); The other end of first electric capacity (C1) is connected with the source electrode of first switching tube (Q1); The other end of the 4th resistance (R4) is connected with the collector electrode of second switch pipe (Q2), and the other end of the 3rd resistance (R3) is connected with the output cathode of supply voltage module, the grounded collector of the 3rd switching tube (Q3); Base stage is connected with the switch controlling signal output of signal processing module and second gear of switch switching unit; The grounded emitter of second switch pipe (Q2), base stage is connected with an end of second resistance (R2), and the other end of second resistance (R2) is connected with the third gear of switch switching unit.
Preferably, said first switching tube Q1 and second switch pipe Q2 are the FET of N raceway groove or the triode of NPN, and said the 3rd switching tube is the FET of P raceway groove or the triode of PNP.
As a kind of concrete embodiment, please refer to shown in Figure 3ly, said switch switching unit is the SP3T slide switch, said SP3T slide switch has three gears, is respectively the first gear SENSOR, the second gear STRONG, third gear WEAK; The said first switching tube Q1 is the MOSFET of N raceway groove, and second switch pipe Q2 is the triode of NPN, and the 3rd switching tube Q3 is the triode of PNP; First link of said switching circuit unit, second link and the 3rd link are a three-pin connector, during use, directly with the positive pole of fluorescent tube, be connected corresponding with negative pole of feedback resistance of drive circuit.Below will combine this specific embodiment that the operation principle that human body provided by the invention moves the induction light adjusting and controlling device is elaborated and introduces.
When the SP3T switch switched to the SENSOR shelves, this was that light adjusting and controlling device of the present invention is responded to gear normally, the signal processing module operate as normal.After said signal processing module receives the voltage signal of variation of signal acquisition module output; The base stage of meeting the 3rd switching tube Q3 from switch controlling signal to the output control module of a high level of first output (VO) output; Because the 3rd switching tube Q3 is the triode of PNP, so the 3rd switching tube Q3 ends.And the emitter of the grid of the first switching tube Q1 and the 3rd switching tube Q3 links to each other; This moment, the grid of the first switching tube Q1 was a high level; The first switching tube Q1 is a N-channel MOS FET, when the voltage of grid can conducting during greater than cut-in voltage, and first switching tube Q1 conducting this moment; The grid of the said first switching tube Q1 and source electrode () between first capacitor C 1 that connects be filter capacitor, can suppress noise, make the grid voltage of the first switching tube Q1 more stable.On the contrary; When signal acquisition module does not collect the infrared signal of variation; Said signal acquisition module will be exported the voltage signal that does not have variation, and signal processing module can be exported a low level switch controlling signal to output control module, corresponding; The 3rd switching tube Q3 conducting, and the first switching tube Q1 ends.
When the 3rd switching tube Q3 ends, and during the first switching tube Q1 conducting, the drain electrode of the first switching tube Q1 and the negative pole that is connected to fluorescent tube after first resistance R 1 is connected through the 3rd link of switching circuit unit, and the source ground of the first switching tube Q1.Please refer to shown in Figure 4ly, at the output of lamp tube drive circuit, be connected with a feedback resistance Rdz, this feedback resistance Rdz is connected the negative pole and ground end of fluorescent tube.At this moment, in switching circuit unit and circuit that fluorescent tube is connected, be equivalent to after the first switching tube Q1 and 1 series connection of first resistance R parallelly connected with feedback resistance Rdz again, it is parallelly connected with feedback resistance Rdz promptly to equal first resistance R 1.Further, when said first resistance R 1 equated with the resistance of the feedback resistance Rdz of lamp tube drive circuit, total feedback resistance of fluorescent tube had just reduced half the, and corresponding output power has just increased one times, and fluorescent tube is in complete bright state.Accordingly; When the 3rd switching tube Q3 conducting, and the first switching tube Q1 by the time, total feedback resistance of fluorescent tube has only feedback resistance Rdz; The fluorescent tube corresponding output power is constant, and fluorescent tube is in half bright state (state when being feedback resistance Rdz to total feedback resistance is decided to be half bright state of fluorescent tube).
Through aforementioned reasoning, can control fluorescent tube with the conducting of the first switching tube Q1 and be in complete bright state, be in half bright state and control fluorescent tube with ending of the first switching tube Q1.Certainly, according to the needs of illumination, the brightness of said fluorescent tube might not be complete bright state, i.e. the brightness of fluorescent tube is adjustable; At this moment, only need the resistance of said first resistance R 1 of control and the feedback resistance Rdz of lamp tube drive circuit, can realize lighting tube brightness by half bright to complete bright between the adjusting of brightness arbitrarily.
When the SP3T slide switch switched to the STRONG shelves, said signal processing module was de-energized, and did not form electrical connection with the second gear STRONG, and signal processing module is in the state of quitting work, and promptly can't carry out the reception and the output services of signal.At this moment, second gear is electrically connected with the base stage of the 3rd switching tube Q3 in the switching circuit unit, and the base stage of the 3rd switching tube Q3 is forced and adds high level.Switching to the analysis of SENSOR gear according to aforementioned SP3T slide switch can know; When the base stage of the 3rd switching tube Q3 was high level, the 3rd switching tube Q3 ended, and the first switching tube Q1 conducting; Be that the switching circuit unit is forced conducting; At this moment no matter there is nobody in the induction range of infrared induction parts, to move, the power output of fluorescent tube (LED infrared induction lamp) all can increase, and has realized making fluorescent tube to be in the state of blast always; Be applied to solution of emergent event and need let the situation of fluorescent tube blast in long-time, made things convenient for pedestrian's illumination.Further, when said first resistance R 1 equated with the resistance of the feedback resistance Rdz of lamp tube drive circuit, fluorescent tube was in complete bright state.
When the SP3T slide switch switched to the WEAK shelves, said signal processing module was de-energized, and did not form electrical connection with third gear WEAK, and signal processing module is in the state of quitting work, and promptly can't carry out the reception and the output services of signal.At this moment, third gear is electrically connected with the base stage of second switch pipe Q2 in the switching circuit unit, and the base stage of second switch pipe Q2 is forced and adds low level, because second switch pipe Q2 is the triode of NPN, so second switch pipe Q2 ends.At this moment; The 3rd resistance R 3 and the 4th resistance R 4 form series circuit, and through controlling the resistance size (must satisfy R4 much smaller than R3) of the 3rd resistance R 3 and the 4th resistance R 4, for example the resistance of the 3rd resistance R 3 is 10K; And the resistance of the 4th resistance R 4 is 1K; Give stable low level of base stage of the first switching tube Q1, the first switching tube Q1 is ended, the switching circuit unit is forced shutoff.Switching to the analysis of SENSOR gear according to aforementioned SP3T slide switch can know; When the first switching tube Q1 ends; Total feedback resistance of fluorescent tube has only feedback resistance Rdz; The fluorescent tube corresponding output power is constant, and fluorescent tube is in half bright state (state when being feedback resistance Rdz to total feedback resistance is decided to be half bright state of fluorescent tube).At this moment no matter there is nobody in the induction range of infrared induction parts, to move; The power output of fluorescent tube (LED infrared induction lamp) all can be constant; Realized making fluorescent tube to be in the constant state of brightness always; Be applied to solution of emergent event and need let fluorescent tube constant situation of brightness in long-time, saved energy consumption.
Further, said human body moves the induction light adjusting and controlling device and also comprises filter unit, and an end of said filter unit is connected with signal acquisition module 11, and the other end is connected with signal processing module 12.Wherein, said ripple filter unit is the RC filter circuit, is sent to signal processing module 12 to the signal of sensing through said RC filter circuit, can filter out some noise signals thus, makes the signal of sensing more accurate, the phenomenon that can not occur judging by accident.Concrete, the design of said RC filter circuit is well known to those skilled in the art, and repeats no more at this.
Further, said human body moves the induction light adjusting and controlling device and also comprises temperature compensation unit, and said temperature compensation unit is connected with signal processing module 12; Particularly, can be connected with the 2IN-pin of the control chip LP0001 of signal processing module 12.The main element of said temperature compensation unit is the thermistor of a negative temperature coefficient, through the resistivity-temperature characteristics of thermistor, guarantees signal acquisition module under the different temperature condition, and its distance of reaction is consistent.This is because the output signal strength of infrared induction parts can increase with the reduction of ambient temperature; And negative tempperature coefficient thermistor can increase by resistance with the reduction of temperature; Make the multiplication factor of voltage signal of the control chip LP0001 be sent to signal processing module reduce; The situation that the lucky like this output signal strength that has compensated the infrared induction parts can increase with the reduction of ambient temperature has guaranteed the consistency of distance of reaction under the varying environment temperature.
Further, said signal processing module comprises timing unit, and said timing unit is used for the switch controlling signal of signal processing module switch controlling signal output output is delayed time, and makes switch controlling signal continue a period of time.Particularly, said timing unit is realized by the RC timing circuit, through the design to resistance value in the timing circuit and capacitance, can realize the time-delay of random time length, and concrete circuit design is known for those skilled in the art, no longer describes.
The above is merely preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of within spirit of the present invention and principle, being done, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a human body moves the induction light adjusting and controlling device, it is characterized in that, comprising:
Signal acquisition module detects the physical activity in the induction range through the infrared induction parts, exports signal processing module to after converting detected infrared signal to voltage signal;
Signal processing module is used to receive the voltage signal that signal acquisition module is exported, and output switch control signal is to output control module;
Output control module comprises switch switching unit and switching circuit unit, and said switch switching unit has first gear; Said switching circuit unit has and anodal first link, second link that is connected with the feedback resistance of lamp tube drive circuit that is connected of fluorescent tube and the 3rd link that is connected with the fluorescent tube negative pole; When said switch switching unit switched to first gear, said signal processing module was switched on and output switch control signal, is used for the conducting and the shutoff of control switch circuit unit.
2. human body according to claim 1 moves the induction light adjusting and controlling device; It is characterized in that; Also comprise power regulator module; The input of power regulator module is connected with second link with first link of switch switching unit, and the output of power regulator module is connected with signal processing module with signal acquisition module.
3. human body according to claim 1 and 2 moves the induction light adjusting and controlling device; It is characterized in that; Said switch switching unit has second gear, and when said switch switching unit switched to second gear, said second gear was connected with the switching circuit unit; Said signal processing module is de-energized, and conducting is forced in the switching circuit unit.
4. human body according to claim 3 moves the induction light adjusting and controlling device; It is characterized in that; Said switch switching unit has third gear, and when said switch switching unit switched to third gear, said third gear was connected with the switching circuit unit; Said signal processing module is de-energized, and the switching circuit unit is forced to turn-off.
5. human body according to claim 4 moves the induction light adjusting and controlling device; It is characterized in that; Said switching circuit unit comprises first switching tube (Q1), second switch pipe (Q2), the 3rd switching tube (Q3), first resistance (R1), second resistance (R2), the 3rd resistance (R3), the 4th resistance (R4) and first electric capacity (C1); Wherein, One end of said first resistance (R1) is connected with the drain electrode of first switching tube (Q1); The other end of first resistance (R1) is as the 3rd link of switching circuit unit, the source ground of first switching tube (Q1), and grid is connected with an end of first electric capacity (C1), an end of the 4th resistance (R4), an end of the 3rd resistance (R3) and the emitter of the 3rd switching tube (Q3); The other end of first electric capacity (C1) is connected with the source electrode of first switching tube (Q1); The other end of the 4th resistance (R4) is connected with the collector electrode of second switch pipe (Q2), and the other end of the 3rd resistance (R3) is connected with the output cathode of supply voltage module, the grounded collector of the 3rd switching tube (Q3); Base stage is connected with the switch controlling signal output of signal processing module and second gear of switch switching unit; The grounded emitter of second switch pipe (Q2), base stage is connected with an end of second resistance (R2), and the other end of second resistance (R2) is connected with the third gear of switch switching unit.
6. human body according to claim 5 moves the induction light adjusting and controlling device; It is characterized in that; Said first switching tube and second switch pipe are the FET of N raceway groove or the triode of NPN, and said the 3rd switching tube is the FET of P raceway groove or the triode of PNP.
7. human body according to claim 5 moves the induction light adjusting and controlling device, it is characterized in that, said first resistance (R1) equates with the resistance of the feedback resistance of lamp tube drive circuit.
8. human body according to claim 1 moves the induction light adjusting and controlling device, it is characterized in that, also comprises filter unit, and an end of said filter unit is connected with signal acquisition module, and the other end is connected with signal processing module.
9. human body according to claim 1 moves the induction light adjusting and controlling device, it is characterized in that, also comprises temperature compensation unit, and said temperature compensation unit is connected with signal processing module.
10. human body according to claim 1 moves the induction light adjusting and controlling device; It is characterized in that; Said signal processing module comprises timing unit, and said timing unit is used for the switch controlling signal of signal processing module switch controlling signal output output is delayed time.
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| CN201110170093.9A CN102843809B (en) | 2011-06-23 | 2011-06-23 | Human body movement induced dimming control device |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103281848A (en) * | 2013-06-20 | 2013-09-04 | 广州从兴电子开发有限公司 | Control method and control device of LED street lamp |
| CN103706104A (en) * | 2013-12-30 | 2014-04-09 | 哈尔滨师范大学 | Infrared ray super-equal-length lower fixing turning core strength training and information feedback device |
| CN107990291A (en) * | 2017-12-10 | 2018-05-04 | 夏烬楚 | It is a kind of based on the light adjusting method monitored to user's head |
| CN110346048A (en) * | 2018-04-08 | 2019-10-18 | 森霸传感科技股份有限公司 | Pyroelectric infrared sensor and control method |
| CN114114972A (en) * | 2020-08-31 | 2022-03-01 | 比亚迪股份有限公司 | I/O control system and automobile thereof |
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| CN114114972B (en) * | 2020-08-31 | 2023-11-14 | 比亚迪股份有限公司 | I/O control system and automobile thereof |
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