CN104184109A - Overvoltage protection device for lamp aging test - Google Patents
Overvoltage protection device for lamp aging test Download PDFInfo
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- CN104184109A CN104184109A CN201310194963.5A CN201310194963A CN104184109A CN 104184109 A CN104184109 A CN 104184109A CN 201310194963 A CN201310194963 A CN 201310194963A CN 104184109 A CN104184109 A CN 104184109A
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Abstract
An embodiment of the invention discloses an overvoltage protection device for a lamp aging test. The overvoltage protection device comprises a first transformation circuit, a second transformation circuit, a voltage comparison circuit, a protection circuit, an alarm circuit and a lamp to be tested, wherein the first transformation circuit is connected with the alarm circuit through the protection circuit; the second transformation circuit is connected with the voltage comparison circuit; and the voltage comparison circuit is connected with the lamp to be tested through the alarm circuit. With the overvoltage protection device for the lamp aging test, the efficiency of the lamp aging test can be improved.
Description
Technical field
The present invention relates to field tests, relate in particular to the over-pressure safety device of light fixture burn-in test.
Background technology
Illuminating industry is very extensive and important in modern society's application, the illuminating product using in all trades and professions is all different, object be all for provide high brightness more boost productivity and direct labors between safety, lighting quality is required also just more and more higher, certainly also just more and more higher to the reliability requirement of light fixture product, and my department all needs to test its light decay and life-span through long-term ageing at the fresh sample light fixture of newly drawing a design, meeting the light decay of my department and life test requires just can carry out batch and purchases and to produce light fixture, in ageing process, all can carry out aging for high pressure, and lamp working voltage often can drift about when aging, cause input voltage higher, sample is burnt out, cause like this test data inaccurate, again sample presentation is tested again, cause repeated work to carry out, waste corporate resource and increase test period, testing efficiency is low, and invisible increase purchase cost.
Summary of the invention
Embodiment of the present invention technical problem to be solved is, a kind of over-pressure safety device of light fixture burn-in test is provided.Can solve the low deficiency of light fixture burn-in test testing efficiency in prior art.
In order to solve the problems of the technologies described above, the embodiment of the present invention provides a kind of over-pressure safety device of light fixture burn-in test, comprise the first transforming circuit, the second transforming circuit, voltage comparator circuit, the protective circuit that comprises switch I C chip and relay, warning circuit and light fixture to be measured, described the first transforming circuit is connected with described warning circuit through described protective circuit, described the second transforming circuit is connected with described voltage comparator circuit, described voltage comparator circuit is connected with described light fixture to be measured through described warning circuit, wherein, described light fixture to be measured accesses the branch road of the normally-closed contact of described relay, described warning circuit accesses the branch road of described relay normally open contact, described switch I C accesses the branch road of the control contact of described relay,
Described the first transforming circuit is processed into the first voltage to the voltage of power supply input through step-down, described the second transforming circuit is processed into second voltage to the voltage of power supply input and exports described voltage comparator circuit to through boosting, described second voltage exports described light fixture to be measured to through described voltage comparator circuit and described protective circuit, described voltage comparative voltage compares the described second voltage of input and preset reference voltage, if described second voltage is greater than described reference voltage, described voltage comparator circuit transmits control signal to the strobe pin of described switch I C chip, so that described switch I C chip is in conducting state, the branch road conducting of the control contact of described relay, normally-closed contact and the normally opened contact of described relay switch simultaneously, thereby described first voltage of described the first transformation Voltage-output is accessed to described warning circuit and disconnect the described second voltage that described light fixture to be measured is inputted, described warning circuit sends sound and/or visual alarm.
Implement the embodiment of the present invention, there is following beneficial effect:
By detecting the input voltage of light fixture to be measured, when the input circuit of light fixture to be measured is greater than preset reference voltage, make light fixture to be measured disconnect input voltage, simultaneously higher by sound and/or light alarm tester voltage, adjust voltage to the normal working voltage of light fixture to be measured, like this tester can without every day scene with universal instrument, carry out spot check voltage, by simple circuit, controlling automatic protection disconnects, there is the simple and safe advantage such as reliable, tester's testing efficiency and the accuracy of test data have been improved, also reduce the spoilage of sample simultaneously.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the structural representation of over-pressure safety device of a kind of light fixture burn-in test of the embodiment of the present invention;
Fig. 2 is the circuit diagram of over-pressure safety device of a kind of light fixture burn-in test of the embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Embodiment based in the present invention, those of ordinary skills, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
Referring to Fig. 1, structural representation for the over-pressure safety device of a kind of light fixture burn-in test of the embodiment of the present invention, comprise the first transforming circuit 1, the second transforming circuit 2, voltage comparator circuit 3, the protective circuit 4 that comprises switch I C chip and relay, warning circuit 5 and light fixture to be measured 6, the first transforming circuit 1 is connected with warning circuit 5 through protective circuit, the second transforming circuit 2 is connected with voltage comparator circuit 3, voltage comparator circuit 3 is connected with light fixture 6 to be measured through warning circuit 5, wherein, the branch road of the normally-closed contact of light fixture cut-in relay to be measured, the branch road of warning circuit cut-in relay normally opened contact, switch I C accesses the branch road of the control contact of described relay, the course of work is:
The first transforming circuit 1 is processed into the first voltage by the voltage of power supply input through step-down, and via protective circuit 4, to export the first voltage to warning circuit 4, the first voltages be the operating voltage of warning circuit 4, the second transforming circuit 1 is processed into second voltage by the power supply of power supply input through boosting, and through voltage comparator circuit 3 and protective circuit 4, export second voltage to light fixture to be measured, voltage comparator circuit 3 presets a reference voltage, voltage comparator circuit 3 compares preset reference circuit and second voltage, if second voltage is greater than reference voltage, voltage comparator circuit 3 transmits control signal to the strobe pin of switch I C chip in protective circuit 4, between the input pin of switch I C chip and input pin, connect so that switch I C chip in conducting state, the branch road conducting of the control contact of relay, normally-closed contact and the normally opened contact of described relay switch simultaneously, thereby the first voltage of the first transformation voltage 1 output is accessed to warning circuit 5 and disconnects the second voltage that light fixture 6 to be measured is inputted, warning circuit sends sound and/or visual alarm.
Further preferred; on basis based on above-described embodiment; this over-pressure safety device also comprises the first fuse and the second fuse; the live wire of described AC power is connected with a pin of the input of described the first transforming circuit by described the first fuse, and the zero line of described AC power is connected with another pin of the input of described the first transforming circuit by described the second fuse.
Further preferred, the first transforming circuit comprises the first voltage device, rectifier, the first filter capacitor, the second filter capacitor and pressurizer, and the output of described the first transformer is connected with the input of described rectifier;
Described the first filter capacitor is connected across between the output of described rectifier and one end of described the first filter capacitor connects the output pin of described pressurizer, and the other end connects the grounding pin of described pressurizer;
One end of described the second filter capacitor connects output pin and the described protective circuit of described pressurizer, and the other end of described the second filter capacitor is connected and ground connection with the grounding pin of described pressurizer respectively.
Further preferred, described the second transforming circuit comprises the second transformer,
Two pins of the input of described the second transformer are connected with live wire with the zero line of described AC power with described the second fuse by described the first fuse respectively;
The output of described the second transformer connects respectively described voltage comparator circuit and described light fixture to be measured.
Further preferred, described voltage comparator circuit comprises the first diode, the first resistance, the second resistance, the 3rd resistance, the 4th resistance, the 5th resistance, comparator and voltage stabilizing didoe,
A pin of the output of described the second transformer connects respectively one end of described the 3rd resistance and the anode of described the first diode, and by the normally-closed contact of described relay, connects a pin of the input of described light fixture to be measured; The negative electrode of described the first diode connects respectively one end of described the second resistance and the positive input pin of described comparator by described the first resistance, and the other end of described the 3rd resistance connects respectively the negative input pin of described comparator and the negative electrode of described voltage stabilizing didoe Z;
Another pin of the output of described the second transformer connect respectively described light fixture output to be measured another pin, connect the other end of described the second resistance and the anode of described voltage stabilizing didoe; The output pin of described comparator connects one end of described the 5th resistance by described the 4th resistance, the other end of described the 5th resistance connects another pin of the anode of described voltage stabilizing didoe and the input of described light fixture to be measured.
Further preferred, protective circuit comprises switch integrated circuit IC chip, relay, the second diode and the 3rd electric capacity,
The input pin of described switch I C chip is connected with the output pin of described pressurizer;
The strobe pin of described switch I C chip connects one end of the 5th resistance R 5,
The grounding pin of described switch I C chip connects one end the ground connection of described the 5th resistance by described the 3rd electric capacity,
The output pin of described switch I C chip connects with the positive input terminal that described warning circuit is connected by the normally opened contact K of described relay;
The output pin of described switch I C chip is also controlled contact ground connection by the coil of described relay;
The power pins of described switch I C chip connects the negative electrode of described the second diode, and the anode of described the second diode is controlled contact with the coil of described relay and is connected and ground connection.
Further preferred, described warning circuit comprises loud speaker,
One end of described loud speaker is connected with the normally opened contact of described relay output end, the other end ground connection of described loud speaker.
Implement embodiments of the invention, detect the input voltage of light fixture to be measured, when the input circuit of light fixture to be measured is greater than preset reference voltage, by the switch I C chip in protective circuit and relay, make light fixture to be measured disconnect input voltage, simultaneously higher by sound and/or light alarm tester voltage, adjust voltage to the normal working voltage of light fixture to be measured, like this tester can without every day scene with universal instrument, carry out spot check voltage, by simple circuit, controlling automatic protection disconnects, there is the simple and safe advantage such as reliable, tester's testing efficiency and the accuracy of test data have been improved, also reduce the spoilage of sample simultaneously.
Referring to Fig. 2, circuit diagram for the over-pressure safety device of a kind of light fixture burn-in test of the embodiment of the present invention, this device comprises the first fuse FR1, the second fuse FR2, the first voltage device T1, rectifier BD1, the first filter capacitor C1, the second filter capacitor C2 and pressurizer Q1, the first diode D1, the first resistance R 1, the second resistance R 2, the 3rd resistance R 3, the 4th resistance R 4, the 5th resistance R 5, comparator U1, voltage stabilizing didoe Z, switch I C chip U2, relay K, the normally opened contact K-1 of relay K, normally-closed contact K-2, the second diode D2, the 3rd capacitor C 3 and loud speaker SP, the annexation of above-mentioned components and parts is:
The live wire L of AC power is connected with a pin of the input of the first transformer T1 by the first fuse FR1, and the zero line N of AC power is connected with another pin of the input of the first transformer T1 by the second fuse FR2; The output of the first transformer T1 is connected with the input of rectifier BD1; The first filter capacitor C1 is connected across between the output of rectifier BD1, and one end of the first filter capacitor C1 connects the input pin of pressurizer Q1, and the other end connects the grounding pin of pressurizer Q1; One end of the second filter capacitor C2 is connected with the input pin of switch I C chip U2 with the output pin of pressurizer Q1 respectively, and the other end of the second filter capacitor C2 is connected and ground connection with the grounding pin of pressurizer Q1 respectively.
A pin of the input of the second transformer T2 is connected with the live wire of AC power by the first fuse FR1; another pin of the input of the second transformer T2 is connected with the zero line of AC power by the second fuse FR2; a pin of the output of the second transformer T2 connects respectively one end of the 3rd resistance R 3 and the anode of the first diode VD1, and by the normally-closed contact K-2 of relay K, connects a pin of the input of light fixture to be measured; The negative electrode of the first diode VD1 connects respectively one end and the positive input pin that is connected comparator U1 of the second resistance R 2 by the first resistance R 1, the other end of the 3rd resistance R 3 connects respectively the negative input pin of comparator U1 and the negative electrode of voltage stabilizing didoe Z;
Another pin of the output of the second transformer T2 connects respectively another pin, the connection other end of the second resistance R 2 and the anode of voltage stabilizing didoe Z of light fixture output to be measured; The output pin of comparator U1 connects one end of the 5th resistance by the 4th resistance R 4, the other end of the 5th resistance R 5 connects another pin of the anode of voltage stabilizing didoe Z and the input of light fixture to be measured.
The input pin 1 of switch I C chip U2 is connected with the output pin of described pressurizer;
The strobe pin 2 of switch I C chip U2 connects one end of the 5th resistance R 5,
The grounding pin 3 of switch I C chip U2 connects one end the ground connection of the 5th resistance R 5 by the 3rd capacitor C 3,
The output pin 4 of described switch I C chip connects with the positive input terminal that described warning circuit 5 is connected by the normally opened contact K-1 of described relay K;
The output pin 4 of described switch I C chip is also controlled contact ground connection by the coil of described relay K;
The power pins 5 of switch I C chip U2 connects the negative electrode of the second diode VD2, and the second anode of diode VD2 and the coil of described relay K are controlled contact and be connected and ground connection;
The output pin 4 of switch I C chip U2 is divided into two-way, lead up to the control contact of relay K and anodic bonding and the ground connection of the second diode VD2, the normally opened contact K-1 of relay K of separately leading up to connects one end of loud speaker SP, the other end ground connection of loud speaker SP.
Further, described light fixture to be measured 6 comprises several terminal blocks, several jacks and several light sources, light fixture to be measured as shown in Figure 2 comprises a wiring board L, 10 jacks side by side (1,2 ..., 10), 5 light sources (L1, L2 ..., L5), every two adjacent jacks are one group, are parallel to positive input terminal and the negative input end of light fixture to be measured.
The operation principle of this device is: power supply input AC civil power, electric current is divided into two-way, step-down is carried out for exchanging AC12V voltage through the first transformer T1 in one tunnel, then at process rectifier BD1, carry out rectification and obtain direct current DC12V voltage, through the first filter capacitor C1, carry out filtering again, through pressurizer Q1, obtaining galvanic current again presses, this direct voltage is the operating voltage of loud speaker SP, this direct voltage becomes level and smooth direct voltage through the second filter capacitor C2 absorption peak voltage, i.e. the first voltage, the first voltage outputs to switch I C chip U2 again, the signal of switch I C chip U2 is preferably TWH8752, now switch I C chip U2 also not electric for not on-state, another road electric current boosts to the required operating voltage of light fixture to be measured through the second transformer T2, it is second voltage, then second voltage is through the normally-closed contact K-2 of relay K, now relay K not electric, normally-closed contact K-2 is closed, normally opened contact K-1 disconnects, from the voltage of the second transformer output, be divided into 3 tunnels, the normally-closed contact K-2 of the 1st tunnel process supplies with the aging work of light source L1-L5, the 2nd tunnel arrives the first resistance R 1 and the second resistance R 2 through the first diode VD1, wherein, the first electronics R1 is a large resistance, can get high voltage, arrive again the positive input pin of comparator U1, the model of comparator U1 is preferably LM358, the negative input pin of comparator U1 is arrived on the 3rd tunnel again through the 3rd resistance R 3 to voltage stabilizing didoe Z, now through the current limliting of carrying out of the 3rd resistance R 3, the negative input end of reference voltage input value comparator U1 is provided through voltage stabilizing didoe Z again, when power input voltage fluctuates when higher, make the voltage of the positive input pin input of comparator U2 reach reference voltage, comparator U1 exports positive voltage, the strobe pin 2 of loaded switches IC chip U2 after the 4th resistance R 4 and the 5th resistance R 5 are carried out dividing potential drop again, make switch I C chip U2 obtain electric and S adhesive, and pressurizer Q1 output current flows through the control coil of relay K through switch I C chip U2, now relay K is charged, the normally-closed contact K-2 of relay K disconnects, the power supply of L1-L5 light source is disconnected automatically, and normally opened contact K-1 adhesive, electric current flows to loud speaker SP, make loud speaker SP carry out alarm tester overtension and need to adjust voltage, so just completed overvoltage protection.
This device is main by large resistance resistance, comparator, switch I C chip, relay and loud speaker form a simple control circuit, there is the simple and safe advantage such as reliable, if there is short circuit phenomenon in circuit, fuse also can fuse and protect, directly power supply is disconnected, thereby reach the object of protection, so just can complete a simple and safe and reliable light source ages overvoltage protection supervisory circuit, simple to operate, improved tester's testing efficiency and the accuracy of test data, also reduce the spoilage of sample simultaneously;
One of ordinary skill in the art will appreciate that all or part of flow process realizing in above-described embodiment method, to come the hardware that instruction is relevant to complete by computer program, described program can be stored in a computer read/write memory medium, this program, when carrying out, can comprise as the flow process of the embodiment of above-mentioned each side method.Wherein, described storage medium can be magnetic disc, CD, read-only store-memory body (Read-Only Memory, ROM) or random store-memory body (Random Access Memory, RAM) etc.
Above disclosed is only a kind of preferred embodiment of the present invention, certainly can not limit with this interest field of the present invention, one of ordinary skill in the art will appreciate that all or part of flow process that realizes above-described embodiment, and the equivalent variations of doing according to the claims in the present invention, still belong to the scope that invention is contained.
Claims (8)
1. the over-pressure safety device of a light fixture burn-in test, it is characterized in that, comprise the first transforming circuit, the second transforming circuit, voltage comparator circuit, the protective circuit that comprises switch I C chip and relay, warning circuit and light fixture to be measured, described the first transforming circuit is connected with described warning circuit through described protective circuit, described the second transforming circuit is connected with described voltage comparator circuit, described voltage comparator circuit is connected with described light fixture to be measured through described warning circuit, wherein, described light fixture to be measured accesses the branch road of the normally-closed contact of described relay, described warning circuit accesses the branch road of described relay normally open contact, described switch I C accesses the branch road of the control contact of described relay,
Described the first transforming circuit is processed into the first voltage to the voltage of power supply input through step-down, described the second transforming circuit is processed into second voltage to the voltage of power supply input and exports described voltage comparator circuit to through boosting, described second voltage exports described light fixture to be measured to through described voltage comparator circuit and described protective circuit, described voltage comparative voltage compares the described second voltage of input and preset reference voltage, if described second voltage is greater than described reference voltage, described voltage comparator circuit transmits control signal to the strobe pin of described switch I C chip, so that described switch I C chip is in conducting state, the branch road conducting of the control contact of described relay, normally-closed contact and the normally opened contact of described relay switch simultaneously, thereby described first voltage of described the first transformation Voltage-output is accessed to described warning circuit and disconnect the described second voltage that described light fixture to be measured is inputted, described warning circuit sends sound and/or visual alarm.
2. device as claimed in claim 1, is characterized in that, also comprises the first fuse and the second fuse,
The live wire of described AC power is connected with a pin of the input of described the first transforming circuit by described the first fuse, and the zero line of described AC power is connected with another pin of the input of described the first transforming circuit by described the second fuse.
3. device as claimed in claim 2, is characterized in that, described the first transforming circuit comprises the first voltage device, rectifier, the first filter capacitor, the second filter capacitor and pressurizer,
The output of described the first transformer is connected with the input of described rectifier;
Described the first filter capacitor is connected across between the output of described rectifier and one end of described the first filter capacitor connects the output pin of described pressurizer, and the other end connects the grounding pin of described pressurizer;
One end of described the second filter capacitor connects output pin and the described protective circuit of described pressurizer, and the other end of described the second filter capacitor is connected and ground connection with the grounding pin of described pressurizer respectively.
4. device as claimed in claim 3, is characterized in that, described rectifier comprises the rectifier bridge that 4 rectifier diodes form.
5. device as claimed in claim 4, is characterized in that, described the second transforming circuit comprises the second transformer,
Two pins of the input of described the second transformer are connected with live wire with the zero line of described AC power with described the second fuse by described the first fuse respectively;
The output of described the second transformer connects respectively described voltage comparator circuit and described light fixture to be measured.
6. device as claimed in claim 5, is characterized in that, described voltage comparator circuit comprises the first diode, the first resistance, the second resistance, the 3rd resistance, the 4th resistance, the 5th resistance, comparator and voltage stabilizing didoe,
A pin of the output of described the second transformer connects respectively one end of described the 3rd resistance and the anode of described the first diode, and by the normally-closed contact of described relay, connects a pin of the input of described light fixture to be measured; The negative electrode of described the first diode connects respectively one end of described the second resistance and the positive input pin of described comparator by described the first resistance, and the other end of described the 3rd resistance connects respectively the negative input pin of described comparator and the negative electrode of described voltage stabilizing didoe Z;
Another pin of the output of described the second transformer connect respectively described light fixture output to be measured another pin, connect the other end of described the second resistance and the anode of described voltage stabilizing didoe; The output pin of described comparator connects one end of described the 5th resistance by described the 4th resistance, the other end of described the 5th resistance connects another pin of the anode of described voltage stabilizing didoe and the input of described light fixture to be measured.
7. device as claimed in claim 6, is characterized in that, described protective circuit comprises switch integrated circuit IC chip, relay, the second diode and the 3rd electric capacity,
The input pin of described switch I C chip is connected with the output pin of described pressurizer;
The strobe pin of described switch I C chip connects one end of the 5th resistance R 5,
The grounding pin of described switch I C chip connects one end the ground connection of described the 5th resistance by described the 3rd electric capacity,
The output pin of described switch I C chip connects with the positive input terminal that described warning circuit is connected by the normally opened contact K of described relay;
The output pin of described switch I C chip is also controlled contact ground connection by the coil of described relay;
The power pins of described switch I C chip connects the negative electrode of described the second diode, and the anode of described the second diode is controlled contact with the coil of described relay and is connected and ground connection.
8. device as claimed in claim 7, is characterized in that, described warning circuit comprises loud speaker,
One end of described loud speaker is connected with the normally opened contact of described relay output end, the other end ground connection of described loud speaker.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310194963.5A CN104184109B (en) | 2013-05-23 | 2013-05-23 | A kind of over-pressure safety device of light fixture burn-in test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201310194963.5A CN104184109B (en) | 2013-05-23 | 2013-05-23 | A kind of over-pressure safety device of light fixture burn-in test |
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| CN104184109A true CN104184109A (en) | 2014-12-03 |
| CN104184109B CN104184109B (en) | 2017-11-24 |
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| CN201310194963.5A Active CN104184109B (en) | 2013-05-23 | 2013-05-23 | A kind of over-pressure safety device of light fixture burn-in test |
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| CN105372550A (en) * | 2015-12-10 | 2016-03-02 | 国网四川省电力公司电力科学研究院 | Intelligent communication power source monitoring device |
| 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 |
| CN112814937A (en) * | 2019-11-15 | 2021-05-18 | 神讯电脑(昆山)有限公司 | Fan aging testing device |
| CN113036722A (en) * | 2019-12-24 | 2021-06-25 | 群光电能科技股份有限公司 | Voltage conversion device |
| CN113890143A (en) * | 2021-09-29 | 2022-01-04 | 珠海拓芯科技有限公司 | Charging circuit, control method, system and device and air conditioner |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105372550A (en) * | 2015-12-10 | 2016-03-02 | 国网四川省电力公司电力科学研究院 | Intelligent communication power source monitoring device |
| 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 |
| CN112814937A (en) * | 2019-11-15 | 2021-05-18 | 神讯电脑(昆山)有限公司 | Fan aging testing device |
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| CN113890143A (en) * | 2021-09-29 | 2022-01-04 | 珠海拓芯科技有限公司 | Charging circuit, control method, system and device and air conditioner |
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| Publication number | Publication date |
|---|---|
| CN104184109B (en) | 2017-11-24 |
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