CN204495979U - LED test circuit - Google Patents
LED test circuit Download PDFInfo
- Publication number
- CN204495979U CN204495979U CN201520230128.7U CN201520230128U CN204495979U CN 204495979 U CN204495979 U CN 204495979U CN 201520230128 U CN201520230128 U CN 201520230128U CN 204495979 U CN204495979 U CN 204495979U
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- China
- Prior art keywords
- led
- test circuit
- relay control
- control module
- utility
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Abstract
The utility model discloses a kind of LED test circuit, comprise the input of 220V power supply, transformer, PLC main frame, also comprise 16 tunnel relay control module, exchange detection module, eight contacts of described 16 tunnel relay control module can connect eight LED respectively, other eight contacts for described interchange detection module being serially connected in sequentially the test circuit of eight LED, described PLC main frame by 485 buses and 16 tunnel relay control module, exchange detection module communication and be connected.LED test circuit of the present utility model changes that current LED factory inspection means are backward, the simple present situation of test item, and offers help for the performance study analysis of product, improvement design.
Description
Technical field
The utility model relates to electrical equipment detection technique field, more particularly, relates to a kind of LED test circuit.
Background technology
The domestic factory having many production LED at present, but, the performance detection apparatus of LED is but quite simple, in being expert at, the detection means very backwardness of LED, most producer is at product export first 8 hours energizing tests, power factor for LED can only be inspected by random samples, and be detected by the hand-held multimeter of workman, personal error is large, does not more have special system automatically to gather product data, sets up product reliability database.
Utility model content
The utility model, for solving the deficiencies in the prior art, provides the LED test circuit of a kind of detection means advanced person, can carry out the detection of many set products simultaneously, detects finished product power factor (PF), power, CO
2the parameters such as discharge capacity.
The utility model solves the technical scheme that its technical matters adopts: a kind of LED test circuit, comprise the input of 220V power supply, transformer, PLC main frame, it is characterized in that: also comprise 16 tunnel relay control module, exchange detection module, eight contacts of described 16 tunnel relay control module can connect eight LED respectively, other eight contacts for described interchange detection module being serially connected in sequentially the test circuit of eight LED, described PLC main frame by 485 buses and 16 tunnel relay control module, exchange detection module communication and be connected.
Described PLC main frame connects sound light alarming circuit.
LED test circuit comprises multiple 16 tunnel relay control module be connected in parallel.
Compared with prior art, the beneficial effects of the utility model are:
LED test circuit of the present utility model changes that current LED factory inspection means are backward, the simple present situation of test item, and offers help for the performance study analysis of product, improvement design.
LED test circuit of the present utility model is applicable to the product export inspection of laboratory or manufacturer, can carry out the test of many group LED simultaneously.For LED burn-in test project, system can test the process data collection of front and back and described point, generates aging of product curve, for the reliability consideration of LED provides authentic data.
Accompanying drawing explanation
Fig. 1 is the PLC control circuit schematic diagram of LED test circuit of the present utility model.
Fig. 2 is LED test circuit schematic diagram of the present utility model.
Fig. 3 is the relay control module electrical control schematic diagram of LED test circuit of the present utility model.
Fig. 4 is the separate unit test machine net control figure of LED test circuit of the present utility model.
Embodiment
Be described below in detail embodiment of the present utility model, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Being exemplary below by the embodiment be described with reference to the drawings, only for explaining the utility model, and can not being interpreted as restriction of the present utility model.
See Fig. 1-4, LED test circuit of the present utility model adopts PLC control technology, and RS485 bus is carried out data and sent PLC main frame to, connects PC/ touch-screen by RS232 interface, carries out data display and checks.By the input voltage (being 220V, 110V, 85V respectively) of the groupings such as the control of main frame output signal KA1, KA2, KA3, after the data gathered compare, output alarm, is checked touch-screen by sound/light prompting, also be can be accessed by abnormal alarm module when finished product test.The RS485 serial ports of PLC is by 485 buses and host communication, and Y0, Y1, Y2 port of PLC connects KA1-KA3 tri-relays respectively, provides three kinds of AC power to select.Separate unit test machine network settings 255# address, except interchange detection module, DC detecting module employ except 1# address, 2# address, can also connect 253 16 tunnel relay control module.Each 16 tunnel relay control module can be tested 8 lamps.
As shown in Figure 2,220V exchanges through transformer, exportable 220V(KA1) or 110V(KA2) or 85V(KA3) three kinds of AC power, to adapt to the grid requirements in country variant/area.For LED finished product, use interchange detection module to detect, the project of detection comprises LED electric current, voltage, power, power factor, CO
2discharge capacity.Exchanging detection module 1 is a data acquisition and communication module, it and PLC host communication.As shown in Figure 3,16 tunnel relay control module have KA3#1-KA3#16 totally 16 contacts, wherein KA3#1-KA3#8 is for connecting 8 LED, KA3#9-KA3#16 is used for interchange detection module to be connected in series in the test circuit of 8 LED, namely, in a relay module, electric current, voltage, power, power factor, the CO of 8 LED can be detected sequentially by exchanging detection module
2discharge capacity.Exemplarily, in fig. 2, the testing circuit structure of three LED finished product lamps (representing three LED respectively) of 16 tunnel relay control module is only denoted.After test starts, PLC sends signal, 16 tunnel relay control module work, trigger a wherein switch closed (such as KA3#1), make the LED bright light of No., after LED pre-operation a period of time, PLC signals, closed by 16 tunnel relay control module gauge tap KA3#9, namely interchange detection module is connected on the circuit of a finished product lamp, realizes the parameter detecting to this LED.
Test machine can detect the parameter of the direct supply of LED.For the detection of the direct supply of LED, undertaken by DC detecting module 2, DC detecting module can complete the detection of direct current voltage, power, power factor (PF).By change-over switch 3, primary input power supply connects the driving power of DC detecting module.For the direct supply of LED, because it is from AC-DC, have energy loss through overcommutation, filtering, by test circuit image data, conversion ratio can be calculated, test circuit data acquisition, carry out the calculating of conversion ratio at main frame, and carry out qualified judgement.When needing the direct supply detecting LED, the direct supply of LED is connected on driving power 4, and the light emitting diode of LED is connected on No. one to No. eight light emitting diode 5 even load port of test circuit.When pressing change-over switch 3, exchange driving power 4 and light emitting diode 5 that DC detecting module is connected in input, exchange detection module 1 and detect the input parameter of powering to driving power, DC detecting module detects the output parameter of driving power.PLC is then allowed by relay switch contacts and exchanges and the data of DC Module from low paramount collection every lamp.Concrete example is as follows: PLC sends signal, 16 tunnel relay control module work, trigger a wherein switch closed (such as KA3#1), make a light emitting diode bright light, meanwhile, PLC signals, and is closed by 16 tunnel relay control module gauge tap KA3#9, namely exchanging detection module and DC detecting block coupled in series on the circuit of a light emitting diode and driving power, the parameter detecting to this driving power is realized.When detecting LED direct supply, test machine is not with finished product.
Below openly specific embodiment of the utility model is only; do not form the restriction to the utility model protection domain; for the utility model person of an ordinary skill in the technical field; do not departing under general idea prerequisite of the present utility model; according to technical solutions of the utility model do without the need to through the change of creative work and replacement, all should drop within protection domain of the present utility model.
Claims (3)
1. a LED test circuit, comprise the input of 220V power supply, transformer, PLC main frame, it is characterized in that: also comprise 16 tunnel relay control module, exchange detection module, eight contacts of described 16 tunnel relay control module can connect eight LED respectively, other eight contacts for described interchange detection module being serially connected in sequentially the test circuit of eight LED, described PLC main frame by 485 buses and 16 tunnel relay control module, exchange detection module communication and be connected.
2. LED test circuit according to claim 1, is characterized in that: described PLC main frame connects sound light alarming circuit.
3. LED test circuit according to claim 1 and 2, is characterized in that: LED test circuit comprises multiple 16 tunnel relay control module be connected in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520230128.7U CN204495979U (en) | 2015-04-16 | 2015-04-16 | LED test circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520230128.7U CN204495979U (en) | 2015-04-16 | 2015-04-16 | LED test circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204495979U true CN204495979U (en) | 2015-07-22 |
Family
ID=53575284
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520230128.7U Expired - Fee Related CN204495979U (en) | 2015-04-16 | 2015-04-16 | LED test circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204495979U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104730471A (en) * | 2015-04-16 | 2015-06-24 | 顺德职业技术学院 | LED lamp testing circuit |
-
2015
- 2015-04-16 CN CN201520230128.7U patent/CN204495979U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104730471A (en) * | 2015-04-16 | 2015-06-24 | 顺德职业技术学院 | LED lamp testing circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150722 Termination date: 20180416 |