CN103135075A - Light source ageing test monitoring circuit - Google Patents
Light source ageing test monitoring circuit Download PDFInfo
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- CN103135075A CN103135075A CN201110374426XA CN201110374426A CN103135075A CN 103135075 A CN103135075 A CN 103135075A CN 201110374426X A CN201110374426X A CN 201110374426XA CN 201110374426 A CN201110374426 A CN 201110374426A CN 103135075 A CN103135075 A CN 103135075A
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Abstract
The invention discloses a light source ageing test monitoring circuit which is used for monitoring an ageing test of a light source to be detected and comprises an accumulation timer and a relay K1. The accumulation timer comprises an output relay, a public end of the output relay is connected with a work power source VCC, a normally-closed contact of the output relay is grounded through a coil of the relay K1, the accumulation timer is further provided with a starting end, under the working state, when starting voltage is input into the starting end and the time is not due, the public end of the output relay is in shirt circuit with the normally-closed contact, and when the starting voltage of the starting end is eliminated and the time is due, the public end of the output relay is in short circuit with the normally contact; and a solenoid switch of the relay K1 is serially connected with the power source. The light source ageing test monitoring circuit can achieve unattended operation of the ageing test.
Description
[technical field]
The present invention relates to the senile experiment device, especially relate to a kind of light source ages experiment monitoring circuit.
[background technology]
Before light fixture dispatches from the factory, 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 is to carry out senile experiment, and the photoelectric parameter of light source is tested.The tradition senile experiment generally all needs the laboratory technician on duty, otherwise can not stop by senile experiment the waste electric energy after digestion time arrives.In addition, senile experiment also various fortuitous events may occur midway, such as mains failure, bulb-damage etc., 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 a kind of and can realize unattended light source ages experiment monitoring circuit.
a kind of light source ages experiment monitoring circuit, monitor for the aging test for the treatment of testing light source, 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 input trigger voltage and timing time do not arrive, the common port of described output relay and normally closed contact short circuit, when the trigger voltage of start end disappears or timing time when having arrived, 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 are connected between working power VCC and ground successively, and described photoresistance R1 is near described light source, the input end input reference voltage of described comparer U1, another input end is connected with the common port that photoresistance R1 is connected with divider resistance R2, the output terminal of described 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 respectively builtin voltage output pin and the start end of described accumulation timer, wherein go back connecting valve SW1 between the grid of the output terminal of comparer U1 and field effect transistor Q1.
Preferably, comprise stabilivolt D1 and current-limiting resistance R3, described current-limiting resistance R3 and stabilivolt D1 are 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 the input end of described comparer U1; The described reference voltage of described stabilivolt D1 output is to described comparer U1.
Preferably, also comprise loudspeaker SP1, field effect transistor Q2 and pull down resistor R4, one of two power input of described loudspeaker SP1 are connected with working power VCC, another source electrode with field effect transistor Q2 is connected, 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, also be connected counnter attack diode D2 between the output terminal of the grid of described field effect transistor Q2 and 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 with test experiments.
Preferably, described power transformation module comprises transformer T1, the rectification module B1 of electrical connection successively and the mu balanced circuit pipe Q3 of three ends, 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 more than two, and is 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 provides trigger voltage for described accumulation timer correspondingly.
Above-mentioned light source ages experiment monitoring circuit, adopt accumulation timer, by setting the senile experiment time, can arrive common port and the normally opened contact short circuit of rear output relay in timing to the senile experiment self-clocking, make the coil blackout of the relay K 1 that is connected between normally closed contact and ground, thereby the electromagnetic switch of relay K 1 disconnects, the light source outage finishes senile experiment in the given time, realizes unmanned.
[description of drawings]
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 the light source ages experiment monitoring circuit of an embodiment.This light source ages experiment monitoring circuit is used for treating the aging test of testing light source to be monitored, and please refer to Fig. 1, and light source S two ends are connected to respectively live wire and the zero line of civil power.
This light source ages experiment monitoring circuit specifically comprises accumulation timer 110, relay K 1 and trigger voltage output circuit.
In the present embodiment, come pilot relay K1 to reach the purpose of controlling light source S by accumulation timer 110.Accumulation timer 110 inside comprise output relay, and the common port 112 of this output relay connects working power VCC, and the normally closed contact 114 of output relay is by coil 122 ground connection of relay K 1.Accumulation timer 110 also has start end 116, and under duty, when the trigger voltage output circuit did not arrive from start end 116 input trigger voltage Vs and timing time, the common port 112 of output relay touched 114 short circuits with normally closed; The trigger voltage Vs that is input to start end 116 when the trigger voltage output circuit disappears or timing time when having arrived, common port 112 and the normally opened contact (not shown) short circuit of described output relay.Below describe as an example of a concrete accumulation timer example.
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), 2 pin are that start end (START), 3 pin are that builtin voltage output terminal (+5V output, maximum 50mA), 4 pin are that reset terminal, 5 pin are that earth terminal, 6 pin are that the normally opened contact (NO) of the output relay of accumulation timer 110 inside, the common port (COM) that 7 pin are output relay, normally closed contact (NC), 9 pin and 10 pin that 8 pin are output relay are two ac power input ends.Therefore 8 pin of the normally closed contact 114 corresponding ELR-4A-H of 7 pin of the common port 112 corresponding ELR-4A-H of output relay, output relay, 2 pin of start end 116 corresponding ELR-4A-H.
During normal operation, 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 begins timing, and 7 pin and 8 pin are short circuits, so coil 122 energisings of relay K 1, electromagnetic switch 124 closures, and light source S lights; After timing time arrived, coil 122 no currents of relay K 1 passed through, and electromagnetic switch 124 disconnects, and light source S extinguishes.In addition, when timing time did not arrive, if trigger voltage Vs disappears, timing stopped, and coil 122 no currents of relay K 1 pass through, and electromagnetic switch 124 disconnects, and light source S extinguishes.
Like this, can realize the unattended light source ages experiment of carrying out, make the time of senile experiment precisely controlled, thereby senile experiment finish in the given time.Above-mentioned ELR-4A-H can replace with isonomic other accumulation timers or the accumulation timer with similar functions.
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, can control the timing of accumulation timer 110 and the switching of relay K 1 with the state of light source S.Be specially when light source S lights output trigger voltage Vs, electromagnetic switch 124 closures of relay K 1; When light source S extinguishes, can't export trigger voltage Vs, the electromagnetic switch 124 of relay K 1 disconnects.Therefore if light source S damages, accumulation timer 110 can stop timing, is convenient to grasp the relation of the electrical quantity of 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 are 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) the input reference voltage of comparer U1, another input end (reverse input end or in-phase input end) 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.
The grounded drain of field effect transistor Q1, source electrode are connected to working power VCC by the coil of relay K 2; The electromagnetic switch two ends of relay K 2 connect respectively builtin voltage output pin 118 and the start end 116 of accumulation timer 110.
Go back connecting valve SW1 between the grid of the output terminal of comparer U1 and field effect transistor Q1.
Wherein, the reference voltage of comparer U1 can be provided by the voltage source of fixed voltage, perhaps adopts the present embodiment preferred version to provide.In the present embodiment, current-limiting resistance R3 and stabilivolt D1 are serially connected between working power VCC and ground successively.The plus earth of stabilivolt D1, the negative electrode of stabilivolt D1 is connected with the input end of comparer U1; The described reference voltage of described stabilivolt D1 output is to described comparer U1.The value of reference voltage setting greater than be not subjected at photoresistance R1 light source S when irradiation resistance R 2 minutes voltage, and when being subjected to light source S irradiation at photoresistance R1 resistance R 2 minutes voltage.
The principle of work of light control circuit 130 is as follows:
When light source S lights, its irradiation photoresistance R1, the resistance of photoresistance R1 reduces.Press switch SW 1 this moment, after the voltage of two input ends of comparer U1 compares, and the output terminal output LOW voltage of U1, not conducting of field effect transistor Q1, accumulation timer 110 continues timing.
When light source S extinguishes, its irradiation photoresistance R1, 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.
Further, the present embodiment also comprises loudspeaker SP1, field effect transistor Q2 and pull down resistor R4.One of two power input of loudspeaker SP1 are connected with working power VCC, another source electrode with field effect transistor Q2 is connected, 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 output noble potential, field effect transistor Q2 conducting, loudspeaker SP1 sounds the alarm, and reminds light source to extinguish.
Preferably, also be connected counnter attack diode D2 between the output terminal of the grid of field effect transistor Q2 and 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 (be generally civil power) of power transformation module 140 with test experiments.
As shown in Figure 5, power transformation module 140 comprises transformer T1, the rectification module B1 of electrical connection successively and the mu balanced circuit pipe Q3 of three ends.The input voltage of the described experiment of the elementary input of transformer T1, secondary input end with rectification module B1 is connected, 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.
The quantity that is appreciated that accumulation timer 110 can be for more than two, and is consistent with the quantity of light source S to be tested.Simultaneously also the quantity of light source S corresponding with to be tested is consistent for the quantity of photocontrol module 130.Accumulation timer 110, photocontrol module 130 and light source S to be tested are corresponding one by one, and can share loudspeaker SP1.
The above embodiment has only expressed several embodiment of the present invention, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the scope of the claims of the present invention.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 (10)
1. a light source ages experiment monitoring circuit, monitor for the aging test for the treatment of 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 the trigger voltage output circuit does not arrive from start end input trigger voltage and timing time, the common port of described output relay and normally closed contact short circuit, the trigger voltage that is input to start end when the trigger voltage output circuit disappears or timing time when having arrived, 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.
2. light source ages experiment monitoring circuit as claimed in claim 1, is characterized in that, described trigger voltage output circuit is light control circuit, and described light control circuit receives light source irradiation, for described accumulation timer provides trigger voltage.
3. light source ages experiment monitoring circuit as claimed in claim 2, 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 are connected between working power VCC and ground successively, and described photoresistance R1 is near described light source, the input end input reference voltage of described comparer U1, another input end is connected with the common port that photoresistance R1 is connected with divider resistance R2, the output terminal of described 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 respectively builtin voltage output pin and the start end of described accumulation timer, wherein go back connecting valve SW1 between the grid of the output terminal of comparer U1 and field effect transistor Q1.
4. light source ages experiment monitoring circuit as claimed in claim 3, it is characterized in that, comprise stabilivolt D1 and current-limiting resistance R3, described current-limiting resistance R3 and stabilivolt D1 are 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 the input end of described comparer U1; Described stabilivolt D1 output reference voltage is to described comparer U1.
5. 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, one of two power input of described loudspeaker SP1 are connected with working power VCC, another source electrode with field effect transistor Q2 is connected, 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.
6. light source ages experiment monitoring circuit as claimed in claim 5, it is characterized in that, also be connected counnter attack diode D2 between the output terminal of the grid of described field effect transistor Q2 and comparer U1, the negative electrode of described counnter attack diode D2 is connected with the grid of described field effect transistor Q2.
7. light source ages experiment monitoring circuit as claimed in claim 1, is characterized in that, described working power VCC is obtained through conversion by the input voltage of power transformation module with test experiments.
8. light source ages experiment monitoring circuit as claimed in claim 7, it is characterized in that, described power transformation module comprises transformer T1, the rectification module B1 of electrical connection successively and the mu balanced circuit pipe Q3 of three ends, 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.
9. light source ages experiment monitoring circuit as claimed in claim 1, is characterized in that, the quantity of described accumulation timer is more than two, and is consistent with the quantity of light source to be tested.
10. light source ages experiment monitoring circuit as claimed in claim 9, is characterized in that, described light control circuit is consistent with the quantity of light source to be tested, and provides trigger voltage for described accumulation timer correspondingly.
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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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|---|---|---|---|
| CN201110374426.XA CN103135075B (en) | 2011-11-22 | 2011-11-22 | Light source ages experiment monitoring circuit |
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| CN103135075A true CN103135075A (en) | 2013-06-05 |
| CN103135075B CN103135075B (en) | 2016-01-13 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107102274A (en) * | 2017-06-30 | 2017-08-29 | 横店集团得邦照明股份有限公司 | One kind realizes sensing lamp batch aging device and its implementation using tongue tube |
| CN108732514A (en) * | 2017-04-17 | 2018-11-02 | 浙江机电职业技术学院 | Portable LED lamp aging tester and its application method |
| CN108828373A (en) * | 2018-08-10 | 2018-11-16 | 无锡曼克斯电子科技有限公司 | A kind of controller automatic aging system and method |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108732514A (en) * | 2017-04-17 | 2018-11-02 | 浙江机电职业技术学院 | Portable LED lamp aging tester and its application method |
| 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 |
| CN107102274A (en) * | 2017-06-30 | 2017-08-29 | 横店集团得邦照明股份有限公司 | One kind realizes sensing lamp batch aging device and its implementation using tongue tube |
| 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 |
| CN108828373A (en) * | 2018-08-10 | 2018-11-16 | 无锡曼克斯电子科技有限公司 | A kind of controller automatic aging system and method |
| 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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