CN103135075B - Light source ages experiment monitoring circuit - Google Patents
Light source ages experiment monitoring circuit Download PDFInfo
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- CN103135075B CN103135075B CN201110374426.XA CN201110374426A CN103135075B CN 103135075 B CN103135075 B CN 103135075B CN 201110374426 A CN201110374426 A CN 201110374426A CN 103135075 B CN103135075 B CN 103135075B
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Abstract
The present invention discloses a kind of light source ages experiment monitoring circuit, aging test for treating testing light source is monitored, it comprises accumulation timer and relay K 1, wherein: described accumulation timer inside comprises output relay, the common port of described output relay connects working power VCC, the normally closed contact of described output relay is by the coil ground connection of described relay K 1, described accumulation timer also has start end, under duty, when start end inputs trigger voltage and timing time does not arrive, the common port of described output relay and normally closed contact short circuit, when start end trigger voltage disappear or timing time arrive time, the common port of described output relay and normally opened contact short circuit, the electromagnetic switch of described relay K 1 is connected in series with light source.Light source ages experiment monitoring circuit can realize the unmanned of senile experiment.
Description
[technical field]
The present invention relates to senile experiment device, especially relate to a kind of light source ages experiment monitoring circuit.
[background technology]
Before light fixture dispatches from the factory, will carry out reliability testing to the light source of light fixture, wherein light source life is one of reliability index.The mode in testing light source life-span carries out senile experiment, tests the photoelectric parameter of light source.Tradition senile experiment generally all needs laboratory technician on duty, otherwise can not be able to stop by senile experiment after digestion time arrives, waste electric energy.In addition, also may there is various fortuitous event, such as mains failure, bulb-damage etc. in senile experiment midway, unless these situations laboratory technician is always on duty, otherwise is difficult to monitoring, very waste of manpower.
[summary of the invention]
Based on this, be necessary to provide one can realize unattended light source ages experiment monitoring circuit.
A kind of light source ages experiment monitoring circuit, aging test for treating testing light source is monitored, comprise accumulation timer and relay K 1, wherein: described accumulation timer inside comprises output relay, the common port of described output relay connects working power VCC, the normally closed contact of described output relay is by the coil ground connection of described relay K 1, described accumulation timer also has start end, under duty, when start end inputs trigger voltage and timing time does not arrive, the common port of described output relay and normally closed contact short circuit, when start end trigger voltage disappear or timing time arrive time, the common port of described output relay and normally opened contact short circuit, the electromagnetic switch of described relay K 1 is connected in series with light source.
Preferably, also comprise light control circuit, described light control circuit receives light source irradiation, for described accumulation timer provides trigger voltage.
Preferably, described light control circuit comprises comparer U1, field effect transistor Q1, relay K 2, photoresistance R1 and divider resistance R2, described photoresistance R1 and divider resistance R2 is connected between working power VCC and ground successively, and described photoresistance R1 is near described light source, an input end input reference voltage of described comparer U1, the common port that another input end is connected with divider resistance R2 with photoresistance R1 is connected, the described output terminal of comparer U1 is connected with the grid of field effect transistor Q1, the grounded drain of described field effect transistor Q1, source electrode is connected to working power VCC by the coil of relay K 2, the electromagnetic switch two ends of described relay K 2 connect builtin voltage output pin and the start end of described accumulation timer respectively, wherein go back connecting valve SW1 between the output terminal of comparer U1 and the grid of field effect transistor Q1.
Preferably, comprise stabilivolt D1 and current-limiting resistance R3, described current-limiting resistance R3 and stabilivolt D1 is serially connected between working power VCC and ground successively, the plus earth of described stabilivolt D1, and the negative electrode of described stabilivolt D1 is connected with an input end of described comparer U1; Described stabilivolt D1 exports described reference voltage to described comparer U1.
Preferably, also comprise loudspeaker SP1, field effect transistor Q2 and pull down resistor R4, two power inputs one of described loudspeaker SP1 are connected with working power VCC, another is connected with the source electrode of field effect transistor Q2, the grounded drain of described field effect transistor Q2, the grid of described field effect transistor Q2 is connected with the output terminal of described comparer U1, and tie point is by described pull down resistor R4 ground connection.
Preferably, be also connected counnter attack diode D2 between the grid of described field effect transistor Q2 and the output terminal of comparer U1, the negative electrode of described counnter attack diode D2 is connected with the grid of described field effect transistor Q2.
Preferably, described working power VCC is obtained through conversion by the input voltage of power transformation module by test experiments.
Preferably, described power transformation module comprises the mu balanced circuit pipe Q3 of transformer T1, rectification module B1 and three ends be electrically connected successively, the input voltage of the described experiment of the elementary input of described transformer T1, the input end of secondary and described rectification module B1 is connected, and the output terminal of described rectification module B1 is through described mu balanced circuit pipe Q3 output power supply VCC.
Preferably, the quantity of described accumulation timer is two or more, consistent with the quantity of light source to be tested.
Preferably, described light control circuit is consistent with the quantity of light source to be tested, and correspondingly for described accumulation timer provides trigger voltage.
Above-mentioned light source ages experiment monitoring circuit, adopt accumulation timer, by the setting senile experiment time, to senile experiment self-clocking, common port and the normally opened contact short circuit of rear output relay can be arrived in timing, make the coil blackout of the relay K 1 be connected between normally closed contact and ground, thus the electromagnetic switch of relay K 1 disconnects, light source power-off, makes senile experiment terminate in the given time, realizes unmanned.
[accompanying drawing explanation]
Fig. 1 is the circuit theory diagrams of the light source ages experiment monitoring circuit of an embodiment;
Fig. 2 is the outside port schematic diagram of accumulation timer ELR-4A-H;
Fig. 3 is the circuit theory diagrams of the light source ages experiment monitoring circuit of an embodiment;
Fig. 4 is the circuit theory diagrams of light control circuit in Fig. 3 embodiment;
Fig. 5 is the circuit theory diagrams of power transformation module.
[embodiment]
As shown in Figure 1, be the circuit theory diagrams of light source ages experiment monitoring circuit of an embodiment.This light source ages experiment monitoring circuit is monitored for the aging test treating testing light source, please refer to Fig. 1, and light source S two ends are connected to live wire and the zero line of civil power respectively.
This light source ages experiment monitoring circuit specifically comprises accumulation timer 110, relay K 1 and trigger voltage output circuit.
Relay K 1 comprises coil 122 and electromagnetic switch 124, when coil 122 is by electric current, and electromagnetic switch 124 adhesive.Electromagnetic switch 124 is connected in series with light source S, thus by control electromagnetic switch 124 open and close controlling light source S extinguishing and light.
In the present embodiment, carry out pilot relay K1 by accumulation timer 110 and reach the object controlling light source S.Accumulation timer 110 inside comprises output relay, and the common port 112 of this output relay connects working power VCC, and the normally closed contact 114 of output relay passes through coil 122 ground connection of relay K 1.Accumulation timer 110 also has start end 116, under duty, when trigger voltage output circuit from start end 116 input trigger voltage Vs and timing time does not arrive time, the common port 112 of output relay touches 114 short circuits with normally closed; When trigger voltage output circuit is input to the trigger voltage Vs disappearance of start end 116 or timing time arrives, common port 112 and the normally opened contact (not shown) short circuit of described output relay.Be described for a concrete accumulation timer below.
As shown in Figure 2, be the outside port schematic diagram of a concrete accumulation timer ELR-4A-H.1 pin of ELR-4A-H is external voltage input control end (selecting), the common port (COM) that the normally opened contact (NO) that 2 pin are start ends (START), 3 pin are builtin voltage output terminal (+5V export, maximum 50mA), 4 pin are reset terminals, 5 pin are earth terminals, 6 pin are output relays of accumulation timer 110 inside, 7 pin are output relays, 8 pin are normally closed contacts (NC) of output relay, 9 pin and 10 pin are two ac power input ends.Therefore 7 pin of the corresponding ELR-4A-H of common port 112 of output relay, 8 pin of the corresponding ELR-4A-H of normally closed contact 114 of output relay, 2 pin of the corresponding ELR-4A-H of start end 116.
During normal work, from 9 pin or the 10 pin incoming transport power supplys of ELR-4A-H, be generally civil power.Timing time is set, and inputs trigger voltage Vs at 2 pin of ELR-4A-H.ELR-4A-H starts timing, and 7 pin and 8 pin are short circuits, and therefore the coil 122 of relay K 1 is energized, and electromagnetic switch 124 closes, and light source S lights; After timing time arrives, coil 122 no current of relay K 1 passes through, and electromagnetic switch 124 disconnects, and light source S extinguishes.In addition, when timing time does not arrive, if trigger voltage Vs disappears, then timing stops, and coil 122 no current of relay K 1 passes through, and electromagnetic switch 124 disconnects, and light source S extinguishes.
Like this, can realize unattendedly carrying out light source ages experiment, make the time of senile experiment precisely controlled, thus senile experiment terminate in the given time.Above-mentioned ELR-4A-H can with other accumulation timers isonomic or have similar functions accumulation timer replace.
Further, on the basis of above-described embodiment, as shown in Figure 3, above-mentioned trigger voltage output circuit is light control circuit 130.Light control circuit 130 receives the irradiation of light source S, for accumulation timer 110 provides trigger voltage Vs.
Increase light control circuit 130, the timing of accumulation timer 110 and the opening and closing of relay K 1 can be controlled with the state of light source S.Be specially when light source S lights, export trigger voltage Vs, the electromagnetic switch 124 of relay K 1 closes; When light source S extinguishes, cannot export trigger voltage Vs, the electromagnetic switch 124 of relay K 1 disconnects.If therefore light source S damages, then accumulation timer 110 can stop timing, is convenient to the relation of the electrical quantity grasping senile experiment time and detection.
Particularly, as shown in Figure 4, light control circuit 130 comprises comparer U1, field effect transistor Q1, relay K 2, photoresistance R1 and divider resistance R2.
Photoresistance R1 and divider resistance R2 is connected between working power VCC and ground successively, and photoresistance R1 is near light source S.
An input end (in-phase input end or reverse input end) input reference voltage, another input end (reverse input end or in-phase input end) of comparer U1 are connected with the common port that photoresistance R1 is connected with divider resistance R2, and the output terminal of comparer U1 is connected with the grid of field effect transistor Q1.
Grounded drain, the source electrode of field effect transistor Q1 are connected to working power VCC by the coil of relay K 2; The electromagnetic switch two ends of relay K 2 connect builtin voltage output pin 118 and the start end 116 of accumulation timer 110 respectively.
Connecting valve SW1 is gone back between the output terminal of comparer U1 and the grid of field effect transistor Q1.
Wherein, the reference voltage of comparer U1 can be provided by the voltage source of fixed voltage, or adopts the present embodiment preferred version to provide.In the present embodiment, current-limiting resistance R3 and stabilivolt D1 is serially connected between working power VCC and ground successively.The plus earth of stabilivolt D1, the negative electrode of stabilivolt D1 is connected with an input end of comparer U1; Described stabilivolt D1 exports described reference voltage to described comparer U1.The value that reference voltage is arranged is greater than the voltage that resistance R2 divides when photoresistance R1 does not irradiate by light source S, and is less than the voltage that resistance R2 divides when photoresistance R1 irradiates by light source S.
The principle of work of light control circuit 130 is as follows:
When light source S lights, it irradiates photoresistance R1, and the resistance of photoresistance R1 reduces.Now press interrupteur SW 1, after the voltage of two input ends of comparer U1 compares, the output terminal output LOW voltage of U1, field effect transistor Q1 not conducting, accumulation timer 110 continues timing.
When light source S extinguishes, it irradiates photoresistance R1, and the resistance of photoresistance R1 raises.After the voltage of two input ends of comparer U1 compares, the output terminal output HIGH voltage of U1, field effect transistor Q1 conducting, the coil electricity of relay K 2, electromagnetic switch disconnects, and accumulation timer 110 stops timing.
Light control circuit 130 also can adopt other to have the circuit of similar control function, such as, comprise the ON-OFF control circuit of photoelectrical coupler.
Further, the present embodiment also comprises loudspeaker SP1, field effect transistor Q2 and pull down resistor R4.Two power inputs one of loudspeaker SP1 are connected with working power VCC, another is connected with the source electrode of field effect transistor Q2, the grounded drain of field effect transistor Q2, the grid of field effect transistor Q2 is connected with the output terminal of comparer U1, and tie point is by described pull down resistor R4 ground connection.
When comparer U1 exports noble potential, field effect transistor Q2 conducting, loudspeaker SP1 sounds the alarm, and reminds light source to extinguish.
Preferably, be also connected counnter attack diode D2 between the grid of field effect transistor Q2 and the output terminal of comparer U1, the negative electrode of counnter attack diode D2 is connected with the grid of described field effect transistor Q2.
In above-described embodiment, all use same working power VCC.Working power VCC both can be provided by constant pressure source, also can be obtained through conversion by the input voltage (being generally civil power) of power transformation module 140 by test experiments.
As shown in Figure 5, power transformation module 140 comprises the mu balanced circuit pipe Q3 of transformer T1, rectification module B1 and three ends be electrically connected successively.The input voltage of the described experiment of the elementary input of transformer T1, is secondaryly connected with the input end of rectification module B1, and the output terminal of rectification module B1 is through described mu balanced circuit pipe Q3 output power supply VCC.Mu balanced circuit pipe Q3 is three terminal device, can adopt as 7812 devices such as grade.Through the exportable stable 12V voltage VCC of mu balanced circuit pipe Q3.
Be appreciated that the quantity of accumulation timer 110 can be two or more, consistent with the quantity of light source S to be tested.Simultaneously the quantity of the light source S that the quantity of photocontrol module 130 is also corresponding with to be tested is consistent.Accumulation timer 110, photocontrol module 130 and light source S one_to_one corresponding to be tested, and loudspeaker SP1 can be shared.
The above embodiment only have expressed several embodiment of the present invention, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (9)
1. a light source ages experiment monitoring circuit, monitors for the aging test treating testing light source, it is characterized in that, comprises accumulation timer, relay K 1 and trigger voltage output circuit, wherein:
Described accumulation timer inside comprises output relay, the common port of described output relay connects working power VCC, the normally closed contact of described output relay is by the coil ground connection of described relay K 1, described accumulation timer also has start end, under duty, when trigger voltage output circuit from start end input trigger voltage and timing time do not arrive time, the common port of described output relay and normally closed contact short circuit, when trigger voltage output circuit is input to the trigger voltage disappearance of start end or timing time arrives, the common port of described output relay and normally opened contact short circuit,
The electromagnetic switch of described relay K 1 is connected in series with light source to be tested;
Described trigger voltage output circuit is light control circuit, and described light control circuit receives light source irradiation to be tested, for described accumulation timer provides trigger voltage.
2. light source ages experiment monitoring circuit as claimed in claim 1, it is characterized in that, described light control circuit comprises comparer U1, field effect transistor Q1, relay K 2, photoresistance R1 and divider resistance R2, described photoresistance R1 and divider resistance R2 is connected between working power VCC and ground successively, and described photoresistance R1 is near described light source, an input end input reference voltage of described comparer U1, the common port that another input end is connected with divider resistance R2 with photoresistance R1 is connected, the described output terminal of comparer U1 is connected with the grid of field effect transistor Q1, the grounded drain of described field effect transistor Q1, source electrode is connected to working power VCC by the coil of relay K 2, the electromagnetic switch two ends of described relay K 2 connect builtin voltage output pin and the start end of described accumulation timer respectively, wherein go back connecting valve SW1 between the output terminal of comparer U1 and the grid of field effect transistor Q1.
3. light source ages experiment monitoring circuit as claimed in claim 2, it is characterized in that, comprise stabilivolt D1 and current-limiting resistance R3, described current-limiting resistance R3 and stabilivolt D1 is serially connected between working power VCC and ground successively, the plus earth of described stabilivolt D1, the negative electrode of described stabilivolt D1 is connected with an input end of described comparer U1; Described stabilivolt D1 output reference voltage is to described comparer U1.
4. light source ages experiment monitoring circuit as claimed in claim 2, it is characterized in that, also comprise loudspeaker SP1, field effect transistor Q2 and pull down resistor R4, two power inputs one of described loudspeaker SP1 are connected with working power VCC, another is connected with the source electrode of field effect transistor Q2, the grounded drain of described field effect transistor Q2, the grid of described field effect transistor Q2 is connected with the output terminal of described comparer U1, and tie point is by described pull down resistor R4 ground connection.
5. light source ages experiment monitoring circuit as claimed in claim 4, it is characterized in that, also be connected counnter attack diode D2 between the grid of described field effect transistor Q2 and the output terminal of comparer U1, the negative electrode of described counnter attack diode D2 is connected with the grid of described field effect transistor Q2.
6. light source ages experiment monitoring circuit as claimed in claim 1, it is characterized in that, described working power VCC is obtained through conversion by the input voltage of power transformation module by test experiments.
7. light source ages experiment monitoring circuit as claimed in claim 6, it is characterized in that, described power transformation module comprises the mu balanced circuit pipe Q3 of transformer T1, rectification module B1 and three ends be electrically connected successively, the input voltage of the described experiment of the elementary input of described transformer T1, the input end of secondary and described rectification module B1 is connected, and the output terminal of described rectification module B1 is through described mu balanced circuit pipe Q3 output power supply VCC.
8. light source ages experiment monitoring circuit as claimed in claim 1, it is characterized in that, the quantity of described accumulation timer is two or more, consistent with the quantity of light source to be tested.
9. light source ages experiment monitoring circuit as claimed in claim 8, it is characterized in that, described light control circuit is consistent with the quantity of light source to be tested, and correspondingly for described accumulation timer provides trigger voltage.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110374426.XA CN103135075B (en) | 2011-11-22 | 2011-11-22 | Light source ages experiment monitoring circuit |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110374426.XA CN103135075B (en) | 2011-11-22 | 2011-11-22 | Light source ages experiment monitoring circuit |
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| CN103135075A CN103135075A (en) | 2013-06-05 |
| CN103135075B true CN103135075B (en) | 2016-01-13 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108732514B (en) * | 2017-04-17 | 2024-01-02 | 浙江机电职业技术学院 | Portable LED lamp aging tester and use method thereof |
| CN107102274B (en) * | 2017-06-30 | 2023-09-05 | 横店集团得邦照明股份有限公司 | Device for realizing batch ageing of induction lamps by using reed pipes and implementation method thereof |
| CN108828373B (en) * | 2018-08-10 | 2021-04-16 | 无锡曼克斯电子科技有限公司 | Automatic aging system and method for controller |
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