CN201137893Y - DC human body infrared induction automatic illuminator - Google Patents
DC human body infrared induction automatic illuminator Download PDFInfo
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- CN201137893Y CN201137893Y CNU2007201992423U CN200720199242U CN201137893Y CN 201137893 Y CN201137893 Y CN 201137893Y CN U2007201992423 U CNU2007201992423 U CN U2007201992423U CN 200720199242 U CN200720199242 U CN 200720199242U CN 201137893 Y CN201137893 Y CN 201137893Y
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
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Abstract
A direct current human infrared induction automatic illuminator comprises a human infrared receiving circuit used for receiving infrared which radiates human and converting the infrared to induction voltage and inputting the voltage to an amplifying and comparing circuit, the amplifying and comparing circuit is used for secondarily amplifying the received induction voltage and comparing the voltage in a comparator, then emitting control signals to a signal control circuit, the signal control circuit used for receiving the control signals and emitting stop signals or conducting signals to a light emitting circuit according to light conditions, the light emitting circuit is used for controlling the lighting or the blanking of a light emitting diode lighting board according to the stop signals or the conducting signals. The utility model has the advantages of simple structure, small volume, low cost and long stand-by condition.
Description
Technical field
The utility model relates to LED luminous tube (lamp) automaton, relates in particular to direct current human body infrared induction photophore.
Background technology
The infrared induction technology is because it is easy to use, so gone by being applied in the daily life more and more widely, as automatic lighting circuit or alarm etc., especially in lighting circuit, have a wide range of applications, but the power supply that human body infrared induction photophore is in the market adopted mostly is alternating current, this just needs earlier alternating current to be converted to dc source, so not only expend lot of energy but also limited its scope that moves, and the human-body infrared auto-induction device that adopts in the market, power consumption is bigger, stand-by time is shorter, improves from instigating its manufacturing cost, is unfavorable for the extensive use of human body infrared induction photophore.
The utility model content
The utility model is for solving the automatic photophore of human body infrared induction in the prior art, and power consumption is big, and the cost height, and the shortcoming that stand-by time is short provides a kind of direct current human body infrared induction automatic photophore.
The automatic photophore of a kind of direct current human body infrared induction comprises,
The human body infrared receiving circuit is used to receive the infrared ray of human body institute radiation, and is translated into induced voltage and is input to and amplify in the comparison circuit;
Amplifying circuit relatively is used for the induced voltage that will receive, after amplifying through secondary, after comparing in comparator, sends control signal and gives signal control circuit;
Signal control circuit receives described control signal, and in conjunction with the light situation send by or Continuity signal to illuminating circuit;
Illuminating circuit, according to described by or Continuity signal control LED luminous plaque luminous or extinguish.
Wherein said relatively amplifying circuit; comprise that digital-to-analogue mixes special-purpose integrated package BISS0001; be used for the induced voltage that to receive; become comparative voltage through first order amplification, the second level after amplifying; compare with the reference voltage in the comparator; described comparative voltage is during greater than described reference voltage, described integrated package output high level, otherwise output low level.
Wherein said signal control circuit comprises, the first diode D1, the second diode D2, photo resistance R9, resistance R 10, dielectric capacitance C9 and NAND gate integrated package, one pin of described NAND gate integrated package links to each other with an end of photo resistance R9 and resistance R 10, the other end ground connection of photo resistance R9, the positive pole of the first diode D1 links to each other with a pin of NAND gate integrated package, the second diode D2 links to each other with an other pin of NAND gate integrated package, the termination power positive pole of dielectric capacitance C9, the positive pole of an other termination second diode D2; When light is strong, perhaps light is weak and when not receiving the control signal of described relatively amplifying circuit, described NAND gate integrated package sends pick-off signal; When a little less than the light and when receiving the control signal of described comparison amplifier, described NAND gate integrated package sends Continuity signal.
The model of the wherein said first diode D1, the second diode D2 is IN4148; Described photo resistance R9, dark resistance are 3M Ω, and light resistance is 10K Ω; The model of described resistance R 10 is 0.1W-2M Ω ± 5%; Described NAND gate integrated package is LM4011, and the model of described dielectric capacitance C9 is CD11-47uF, 16V.
Wherein said illuminating circuit comprises triode Q1, LED luminous plaque and power supply, the base stage of described triode Q1 receives the control signal of described control signal circuit, the emitter grounding of described triode Q1, the colelctor electrode of described triode is connected in the negative pole of described LED luminous plaque, and the positive pole of described LED luminous plaque is connected with power supply, when triode Q1 receives Continuity signal, the LED luminous plaque is luminous, and when receiving pick-off signal, the LED luminous plaque extinguishes; Described triode Q1 is C2500; Described LED luminous plaque is made up of light emitting diode, and wherein the positive pole of light emitting diode links together as the positive pole of LED luminous plaque, and negative pole links together, as the negative pole of LED luminous plaque; Described power supply is a dc source; The used power supply of described power circuit is No. 5 dry cells of 3 joints, and voltage range is 4.5V~6V.
A kind of made human body infrared induction automatic luminous device of the automatic photophore of direct current infrared induction of utilizing comprises that the shell of a through hole is arranged at the top; Be installed in the Fresnel Lenses on the through hole; Place in the shell and the circuit board under Fresnel Lenses, described human body infrared receiving circuit, comparison amplifying circuit, signal control circuit and illuminating circuit all place on the circuit board; Be positioned at the battery pack of enclosure, the negative pole of battery pack is equipped with battery spring.
The utility model has been owing to adopted dc source, and adopted the high impedance device, and stand-by time is long, and power consumption is little, and device is all homemade, and cost is lower, and volume is little, not only can use separately, and can be built in other handicrafts.
Description of drawings
Fig. 1 is the circuit diagram of the automatic photophore of direct current human body infrared induction;
Fig. 2 is the infrared automatic luminous device structure chart of human body;
Fig. 3 is the annexation figure of LED luminous plaque and circuit board;
Fig. 4 is the annexation figure of light emitting diode on the LED luminous plaque.
The specific embodiment
The infrared automatic photophore of the utility model direct current human body mainly comprises as lower module:
The human body infrared receiving circuit is used to receive the infrared ray that human body is launched, and is translated into induced voltage and is input to and amplify in the comparison circuit;
Amplifying circuit relatively is used for the induced voltage that will receive, after amplifying through secondary, after comparing in comparator, sends control signal and gives signal control circuit;
Signal control circuit receives described control signal, and in conjunction with the light situation send by or Continuity signal to illuminating circuit;
Illuminating circuit, according to described by or Continuity signal control LED luminous plaque luminous or extinguish.
Below in conjunction with a specific embodiment the utility model is done detailed description, as shown in Figure 1, the human body infrared receiving circuit comprises, human body is released infrared remote receiver P1, resistance R 1, R2, capacitor C 1, wherein human body is released the 3 pin ground connection of infrared receiver P1, and 1 pin connects the positive pole of capacitor C 10 (dielectric capacitance CD11-22uF 16V), connect ic chip 11,8,9,11 pin of (IC1 mixes special IC for the BISS0001 digital-to-analogue) simultaneously, and an end of resistance R 16 (0.1W-1K Ω); An other end of resistance R 16 is connected with the positive pole of power supply; The 2 pin connecting resistance R1 (0.1W-1M Ω ± 5%) of P1, the end of R2 (0.1W-10K Ω ± 5%) connect an end of capacitor C 1 (paster-0.01uF 20V) simultaneously.
Relatively amplifying circuit comprises; (digital-to-analogue is mixed integrated package to ic chip 1; comprise operational amplifier; comparator; controller etc.); resistance R 3; R4; R5; R6; capacitor C 2; C3; C4; C5; 14 pin of another termination ic chip 1 of resistance R 2 wherein; one end of the other end of 12 pin connecting resistance R3 (0.1W-1M Ω ± 5%) of integrated package and capacitor C 2 (paster-0.01uF 20V); 13 pin of an other termination ic chip 1 of capacitor C 2; the simultaneously also other end of connecting resistance R3 and an end of resistance R 4 (0.1W-10K Ω ± 5%); the positive pole of an other termination capacitor C3 (dielectric capacitance CD11-10uF 16V) of resistance R 4; the end of the negative pole connecting resistance R5 (0.1W-2M Ω ± 5%) of capacitor C 3; an and end of capacitor C 4 (paster-0.01uF 20V); and 16 pin of ic chip 1; the other end of the other end connecting resistance R5 of capacitor C 4 is connected with the positive pole of capacitor C 5 (dielectric capacitance CD11-47uF 16V); and be connected with 15 pin of ic chip 1; the negative pole of capacitor C 5 is connected with resistance R 6 (0.1W-47K Ω ± a 5%) end; an other end ground connection of resistance R 6; 7 pin ground connection of ic chip 1; 10 pin are connected with an end of resistance R 7 (0.1W-1M Ω ± 5%), an other end ground connection of resistance R 7.The end of the 6 pin connecting resistance R11 (0.1W-3M Ω ± 5%) of IC1, an other end of resistance R 11 is connected with 15 pin of ic chip 1 and capacitor C 7 (paster-0.01uF 20V), an other end ground connection of capacitor C 7.3 pin of IC1 are connected with resistance R 12 (0.1W-220K Ω ± 5%), and an other end of resistance R 12 is connected with an end of capacitor C 8 (paster-1nP 20V) and the power pin of ic chip 1, an other end ground connection of capacitor C 8.
Signal control circuit comprises: ic chip 2 (IN4148), diode D1, D2, resistance R 8, R9, R10, R13, R14, capacitor C 6, C9, wherein 2 pin of ic chip 1 connect the positive pole of diode D1 (IN4148), the negative pole of D1 connects an end of capacitor C 6 (paster-1uF 20V), and 1 pin of an end of resistance R 8 and ic chip 2; The other end ground connection of capacitor C 6 and resistance R 8; 2 pin connecting resistance R9 (photo resistance of ic chip 2 (two inputs, four NAND gate integrated circuits), dark resistance 3M Ω, light resistance 10K Ω), the end of R10 (0.1W-2M Ω ± 5%), an other end ground connection of resistance R 9, an other end positive source of resistance R 10 is connected.3 pin of ic chip 2 are connected with the negative pole of diode D2 (IN4148), the positive pole of diode D2 links to each other with the end of resistance R 13 (0.1W-470K Ω ± 5%) with capacitor C 9 (dielectric capacitance CD11-22uF 16V), connect 5 pin and 6 pin of IC2 simultaneously, an other end of resistance R 13 and capacitor C 9 is connected with positive source.7 pin ground connection of ic chip 2,14 pin of IC2 are connected with the end of resistance R 14 (0.1W-100 Ω ± 5%) with resistance R 15 (0.1W-10K Ω ± 5%), an other termination power positive pole of resistance R 14.
Illuminating circuit comprises, resistance R 15, triode Q1, LED luminous plaque, resistance R 17, the base stage B of an other end transistor Q1 (C2500) of resistance R 15 wherein, the emitter-base bandgap grading E ground connection of Q1, the colelctor electrode of Q1 connects the negative pole of LED luminous plaque, the end of the anodal connecting resistance R17 (0.5W-18 Ω ± 5%) of LED luminous plaque, an other termination power positive pole of resistance R 17.One end of capacitor C 11 (dielectric capacitance CD11-100uF 16V) is connected with supply voltage, an other end ground connection.
The automatic photophore of direct current human body infrared induction provided by the utility model, its concrete operation principle is, when light around is strong, the light resistance of photo resistance R9 is 10K Ω, this moment, R9 and R10 (2M Ω) were cascaded jointly, be attempted by on the supply voltage E (4.5V), the voltage that can get on the resistance R 9 is just very little like this, so 2 pin of ic chip 2 are low level just, like this no matter 1 pin of ic chip 2 is high level or low level, through after the NAND gate, its 3 pin output be high level, cause diode D2 to be in cut-off state, and then make 5 pin of ic chip 2 and 6 pin be high level, through after the NAND gate, what its 4 pin was exported also is low level, cause triode Q1 to end, thereby light emitting diode D3~D7 is all not luminous.
When light around is dark, the dark resistance of photo resistance R9 is 3M Ω, can get the voltage of 3/5E this moment on the R9, so this moment, 2 pin of ic chip 2 were high level just, when nobody's process infrared remote receiver P1,2 pin of ic chip 1 do not have output voltage, this moment, 1 pin of integrated package still was a low level, thereby 3 pin of IC2 are output as high level, and diode D2 ends, and make 5 pin of ic chip 2 and 6 pin be high level, its 4 pin is output as low level, triode Q1 is in the state that ends, thereby causes light emitting diode D3~D7 not luminous, and entire circuit is in holding state.
As the people during near infrared remote receiver P1,2 pin of infrared remote receiver P1 will produce an induced voltage V1,14 pin input from ic chip 1, carrying out first order computing through first order operational amplifier amplifies, carry out second level computing through second level operational amplifier and amplify, obtain comparative voltage Vc.Comparative voltage Vc and reference voltage V R compare in comparator, when Vc>VR (VR=0.2E), allow to trigger, output voltage V o is from the 2 pin output of ic chip 1, it is output as high level, and this moment, human body was less than or equal to 6 meters apart from the air line distance of infrared remote receiver P1; When Vc<VR, forbid triggering, 2 pin of integrated package are output as low level, this moment, human body (was subjected to the influence of ambient environmental conditions apart from the air line distance of infrared remote receiver P1 greater than 6 meters, when human body during greater than 6 meters, also might cause the 2 pin output high level of ic chip 1, but its output is extremely unstable apart from the distance of infrared remote receiver P1, when human body when the distance of infrared remote receiver is less than or equal to 6 meters, then one guarantee that surely 2 pin of ic chip 1 are output as high level).When 2 pin of ic chip 1 are exported high level, diode D1 is in conducting state, 1 pin of ic chip 2 is a high level, and 2 pin also are high level, thereby its 3 pin is a low level, diode D2 is in conducting state, 5 pin of ic chip 2 and 6 pin all are low level, and its 4 pin is a high level like this, thereby cause transistor Q1 conducting, resistance R 17 and diode D3~D8 and triode Q1 are connected on the loop jointly, and light emitting diode D3~D7 is luminous.Otherwise when 2 pin of ic chip 1 were low level, light emitting diode D3~D7 then can be not luminous.
Wherein in light intensity when being much, human body is near infrared remote receiver, and the LED luminous plaque can be luminous, can regulate by regulating resistance R 10, and when organizing not simultaneously of resistance R 10, when LED was luminous, the light intensity of its surrounding environment was different.Regulate dielectric capacitance C9, can regulate from the close infrared remote receiver of human body to the luminous used time of LED luminous plaque.
What the utility model adopted is the low-power consumption equipment, and adopting closed portion (environmental light brightness reach requirement after) and standby is irrelevant part partly, makes it to save energy, and effectively delays stand-by time.Calculate as can be known through measuring,
(1) when adopting 1.2AH (ampere-hour) battery, standby (extinguishing) electric current at 0.00013A (130uA) then,
1.2 ÷ 0.00013=9230 (hour)
9230 ÷, 24 ÷, 30 ≈ December (a year)
Be that the present invention adopts common No. 5 dry cells of three joints, its stand-by time is approximately 1 year, if adopt high-capacity battery, its stand-by time can also prolong.
(2) bright lamp current is 350mA, 0.35A just, then:
1.2 ampere-hour ÷ 0.35A=3.4 hour,
Because light emitting diode is that interruption is luminous, each luminous time is no more than 10s~20s, then can prolong the service life of supplying cell greatly.
Utilize the infrared inductor of the automatic photophore technology of direct current human body infrared induction made, as Fig. 2, shown in Figure 3, induction installation comprises shell 103, through hole is arranged at described shell 103 tops, be coated with Fresnel Lenses 101 on the through hole, there is circuit board 102 Fresnel Lenses 101 lower ends, the LED luminous plaque of being made up of light emitting diode D3~D7 105 is positioned at the inside of the shell 103 of this dress body, 3 batteries 104 are positioned at the inside of shell 103,3 batteries are together in series to the circuit board power supply, and the negative pole of battery 104 has spring 106.
Wherein Fresnel Lenses can effectively focus on the infrared ray that detects on the sensor effectively, in the example of the present invention, when human body when this infrared inductor, the infrared ray that human body radiation goes out is effectively detected by Fresnel Lenses, and be transferred to infrared recipient on the circuit board, when human body when the distance of infrared recipient is in 6 meters scopes, this LED luminous plaque is luminous, when human body is walked when far away, the LED luminous plaque is (10s~20s), extinguish after certain time delay.
Wherein the arrangement of the diode in this LED luminous plaque can be arbitrarily, Fig. 4 is one of them concrete arrangement mode, only the positive pole of light emitting diode D3~D7 need be coupled together and be connected on the positive pole of circuit board, the negative pole of light emitting diode coupled together get final product on the negative pole that is connected on circuit board, its connected mode can have various ways, is not limited to present embodiment.
Adopt 5 light emitting diodes in the utility model, rated voltage is 3V, rated current is 20mA, and length is 8mm, when it is nearer apart from light, illumination is greater than or equal to 1500lux (lux), when apart from bright 1 meter, illumination is about 20lux, can satisfy to be applicable to lamp decoration control, night, family threw light on automatically, automatic antitheft warning system etc.
Though the utility model has adopted dry cell as power supply, also adopted the high impedance device simultaneously, so can realize long stand-by time, about 1 year, and its power consumption is less, and standby power is 0.68mW, and bright lamp power is 1.6W, power supply is a dc battery, places, and is easy to use.
The utility model not only can use separately, and because volume is less, also can be installed in the inside or the outside of process gift, ornaments, picture frame, as decorating and the practical novel process product that combines, produces, uses.
This circuit adopts the paster equipment, and circuit is simple, and low production cost, equipment are all homemade, is convenient to produce, make and apply, and is practical.
Present embodiment is a specific embodiment of the present invention, and any those skilled in the art all can make corresponding change, and as the method for attachment with the light emitting diode on the LED luminous plaque, the number of light emitting diode all can be made corresponding change.Utilize the made infrared induction automatic luminous device of the automatic photophore of infrared induction, its shape can be diversified, as cylindrical, cuboid, soccer star, prismatic and other shape, and its light that sends also is not limited to white light, also can be red light, orange-colored light, sodium yellow, green light, blue light, indigo coloured light, purple light or their combination.
Each electric capacity, resistance and other components and parts in the present embodiment, the model that all is not limited only among the embodiment to be disclosed as long as function is approximate, all can be done corresponding replacement.
Protection domain of the present utility model is not limited thereto, and protection domain of the present utility model exceeds with claims.
Claims (10)
1, the automatic photophore of a kind of direct current human body infrared induction is characterized in that, comprise,
The human body infrared receiving circuit is used to receive the infrared ray of human body institute radiation, and is translated into induced voltage and is input to and amplify in the comparison circuit;
Amplifying circuit relatively is used for the induced voltage that will receive, after amplifying through secondary, after comparing in comparator, sends control signal and gives signal control circuit;
Signal control circuit receives described control signal, and in conjunction with the light situation send by or Continuity signal to illuminating circuit;
Illuminating circuit, according to described by or Continuity signal control LED luminous plaque luminous or extinguish.
2, the automatic photophore of a kind of direct current human body infrared induction as claimed in claim 1; it is characterized in that; described relatively amplifying circuit; comprise that digital-to-analogue mixes special-purpose integrated package BISS0001, be used for the induced voltage that will receive, through the first order amplify, the second level becomes comparative voltage after amplifying; compare with the reference voltage in the comparator; described comparative voltage is during greater than described reference voltage, described integrated package output high level, otherwise output low level.
3, the automatic photophore of a kind of direct current human body infrared induction as claimed in claim 1, it is characterized in that, described signal control circuit comprises, first diode (D1), second diode (D2), photo resistance (R9), resistance (R10), dielectric capacitance (C9) NAND gate integrated package, one pin of described NAND gate integrated package links to each other with the end of photo resistance (R9) with resistance (R10), an other end ground connection of photo resistance (R9), the positive pole of first diode (D1) links to each other with a pin of NAND gate integrated package, second diode (D2) links to each other with an other pin of NAND gate integrated package, one end of dielectric capacitance (C9) is connected with positive source, and the other end also positive pole of second diode (D2) is connected; When light is strong, perhaps light is weak and when not receiving the control signal of described relatively amplifying circuit, described NAND gate integrated package sends pick-off signal; When a little less than the light and when receiving the control signal of described comparison amplifier, described NAND gate integrated package sends Continuity signal.
4, the automatic photophore of a kind of direct current human body infrared induction as claimed in claim 3 is characterized in that the model of described first diode (D1) and second diode (D2) is IN4148; Described photo resistance (R9), dark resistance are 3M Ω, and light resistance is 10K Ω; The model of described resistance (R10) is 0.1W-2M Ω ± 5%; Described NAND gate integrated package is LM4011, and the model of described dielectric capacitance (C9) is CD11-47uF, 16V.
5, the automatic photophore of a kind of direct current human body infrared induction as claimed in claim 1, it is characterized in that, described illuminating circuit comprises triode (Q1), LED luminous plaque and power supply, the base stage of described triode (Q1) receives the control signal of described control signal circuit, the emitter grounding of described triode (Q1), the colelctor electrode of described triode is connected in the negative pole of described LED luminous plaque, the positive pole of described LED luminous plaque is connected with power supply, when triode (Q1) when receiving Continuity signal, the LED luminous plaque is luminous, and when receiving pick-off signal, the LED luminous plaque extinguishes.
6, the automatic photophore of a kind of direct current human body infrared induction as claimed in claim 5 is characterized in that described triode (Q1) is C2500.
7, the automatic photophore of a kind of direct current human body infrared induction as claimed in claim 5, it is characterized in that, described LED luminous plaque is made up of light emitting diode, wherein the positive pole of light emitting diode links together as the positive pole of LED luminous plaque, negative pole links together, as the negative pole of LED luminous plaque.
8, the automatic photophore of a kind of direct current human body infrared induction as claimed in claim 5 is characterized in that described power supply is a dc source.
9, the automatic photophore of a kind of direct current human body infrared induction as claimed in claim 7 is characterized in that, the used power supply of described power circuit is No. 5 dry cells of 3 joints, and voltage range is 4.5V~6V.
10, a kind of made human body infrared induction automatic luminous device of the automatic photophore of the described direct current infrared induction of claim 1 of utilizing is characterized in that this device comprises that the shell of a through hole is arranged at the top; Be installed in the Fresnel Lenses on the through hole; Place in the shell and the circuit board under Fresnel Lenses, described infrared receiving circuit, comparison amplifying circuit, signal control circuit and illuminating circuit all are arranged on the circuit board; Be positioned at the battery pack of enclosure, the negative pole of battery pack is equipped with battery spring.
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CNU2007201992423U CN201137893Y (en) | 2007-12-13 | 2007-12-13 | DC human body infrared induction automatic illuminator |
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102056375A (en) * | 2010-10-25 | 2011-05-11 | 苏州高新区禾云设备设计事务所 | Night induction lighting control circuit |
CN108045299A (en) * | 2017-12-25 | 2018-05-18 | 中国重汽集团济南动力有限公司 | A kind of automatic control device for automobile lights with defencive function |
CN108305419A (en) * | 2018-02-02 | 2018-07-20 | 宁夏乐智博科技有限公司 | Anti-theft prewarning apparatus |
-
2007
- 2007-12-13 CN CNU2007201992423U patent/CN201137893Y/en not_active Expired - Fee Related
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102056375A (en) * | 2010-10-25 | 2011-05-11 | 苏州高新区禾云设备设计事务所 | Night induction lighting control circuit |
CN108045299A (en) * | 2017-12-25 | 2018-05-18 | 中国重汽集团济南动力有限公司 | A kind of automatic control device for automobile lights with defencive function |
CN108045299B (en) * | 2017-12-25 | 2024-03-26 | 中国重汽集团济南动力有限公司 | Automatic automobile light control device with protection function |
CN108305419A (en) * | 2018-02-02 | 2018-07-20 | 宁夏乐智博科技有限公司 | Anti-theft prewarning apparatus |
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Granted publication date: 20081022 Termination date: 20101213 |