CN202974438U - Illuminance test circuit for LED street lamp test system - Google Patents
Illuminance test circuit for LED street lamp test system Download PDFInfo
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- CN202974438U CN202974438U CN 201220631461 CN201220631461U CN202974438U CN 202974438 U CN202974438 U CN 202974438U CN 201220631461 CN201220631461 CN 201220631461 CN 201220631461 U CN201220631461 U CN 201220631461U CN 202974438 U CN202974438 U CN 202974438U
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- street lamp
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Abstract
The utility model discloses an illuminance test circuit for an LED street lamp test system, comprising a photo-detector, a preamplifier circuit, a filtering circuit, an A/D conversion circuit, a storing circuit, a processor calculating an illuminance of a tested LED street lamp according to a signal detected by the photo-detector, a display unit used for displaying the illuminance of the LED street lamp, a power supply connected with the processor, a USB interface connected with the processor and connected with other external devices to perform auxiliary power supply when electric quantity of the power supply is insufficient, a timing circuit connected with the processor, a display drive circuit respectively connected with the A/D conversion circuit and the display unit, a switching circuit respectively connected with the processor and the photo-detector, and a fault alarm circuit connected with the processor; the illuminance test circuit is advantaged by simple structure, reasonable design, convenient wiring, capability of real-time measurement and display of illuminance of the LED street lamp, high reliability, sensitive reaction, and high test precision.
Description
Technical field
The utility model relates to a kind of test circuit, especially relates to a kind of LED street lamp test macro illuminance test circuit.
Background technology
The lifting of significantly using at lighting field along with LED, LED enters rapidly illumination market, owing to having and the distinct space luminescence characteristic of traditional lighting light source, be applicable to method that conventional light source measures and can not have satisfied quality control to the LED illuminating product, for the requirement of LED illuminating product, constantly put into effect relevant regulations.And Chinese Government is for the popularization of the LED of energy-conserving and environment-protective illumination, the enforcement of ten ten thousand plans in city, and making various places detect LED street lamp project photochromism has also had very large attention.At present, for whole LED light fixture or the larger LED bulb of light-emitting area, be different from single LEDs, its area is larger, and light emission direction is strong, and in the actual illumination environment, we need electrical property, optical property etc. is all tested.Measurement for the LED lamp illuminance aspect optics is very important, need to have in whole test macro for this reason one simple in structure, and highly sensitive test circuit carries out illuminance test.
The utility model content
Technical problem to be solved in the utility model is for above-mentioned deficiency of the prior art, a kind of LED street lamp test macro illuminance test circuit is provided, it is simple in structure and use easy to operately, and work can be measured in real time and show LED street lamp illuminance.
for solving the problems of the technologies described above, the technical solution adopted in the utility model is: a kind of LED street lamp test macro illuminance test circuit is characterized in that: comprise the photo-detector for detection of tested LED street lamp light, the pre-amplification circuit that joins with photo-detector, the filtering circuit that joins with pre-amplification circuit, be the A/D change-over circuit of digital signal with the analog signal conversion of filtering circuit output, storage inside has the LED illuminance to calculate the memory circuit of program, the calculated signals that detects according to photo-detector goes out the processor of tested LED street lamp illuminance, be used for showing the display unit of described LED street lamp illuminance, the power supply that joins with processor, join with processor and be used for being connected the USB interface of carrying out auxiliary power supply with other external unit when electric quantity of power supply is not enough, the timing circuit that joins with processor, the display driver circuit that joins with A/D change-over circuit and display unit respectively, the on-off circuit that joins with processor and photo-detector respectively and the failure alarm circuit that joins with processor, described display driver circuit comprises code translator and the driver that joins with code translator, described A/D change-over circuit and filtering circuit join, described memory circuit and display unit all join with processor, and described code translator and processor join, and described driver and display unit join.
Above-mentioned a kind of LED street lamp test macro illuminance test circuit is characterized in that: comprise that also described RS232 interface and processor join for the RS232 interface that joins with PC.
Above-mentioned a kind of LED street lamp test macro illuminance test circuit, it is characterized in that: described photo-detector is silicon photocell.
Above-mentioned a kind of LED street lamp test macro illuminance test circuit, it is characterized in that: described processor is single-chip microcomputer.
Above-mentioned a kind of LED street lamp test macro illuminance test circuit, it is characterized in that: described display unit is liquid crystal display.
The utility model compared with prior art has the following advantages: simple in structure, reasonable in design, easy-to-connect can measure and show the illuminance of LED street lamp in real time during work, and reliability is high, be quick on the draw, measuring accuracy is high.
Below by drawings and Examples, the technical solution of the utility model is described in further detail.
Description of drawings
Fig. 1 is circuit theory diagrams of the present utility model.
Description of reference numerals:
1-photo-detector; 2-pre-amplification circuit; 3-filtering circuit;
4-A/D change-over circuit; 5-memory circuit; 6-processor;
7-display unit; 8-power supply; 9-display driver circuit;
9-1-code translator; 9-2-driver; 10-on-off circuit;
11-failure alarm circuit; 12-USB interface; 13-timing circuit;
14-RS232 interface.
Embodiment
as shown in Figure 1, the utility model comprises the photo-detector 1 for detection of tested LED street lamp light, the pre-amplification circuit 2 that joins with photo-detector 1, the filtering circuit 3 that joins with pre-amplification circuit 2, be the A/D change-over circuit 4 of digital signal with the analog signal conversion of filtering circuit 3 outputs, storage inside has the LED illuminance to calculate the memory circuit 5 of program, the calculated signals that detects according to photo-detector 1 goes out the processor 6 of tested LED street lamp illuminance, be used for showing the display unit 7 of described LED street lamp illuminance, the power supply 8 that joins with processor 6, join with processor 6 and be used for being connected with other external unit the usb 12 that carries out auxiliary power supply when power supply 8 electric weight are not enough, the timing circuit 13 that joins with processor 6, the display driver circuit 9 that joins with A/D change-over circuit 4 and display unit 7 respectively, the on-off circuit 10 that joins with processor 6 and photo-detector 1 respectively and the failure alarm circuit 11 that joins with processor 6, described display driver circuit 9 comprises code translator 9-1 and the driver 9-2 that joins with code translator 9-1, described A/D change-over circuit 4 joins with filtering circuit 3, described memory circuit 5 and display unit 7 all join with processor 6, described code translator 9-1 and processor 6 join, and described driver 9-2 and display unit 7 join.
In the present embodiment, also comprise for the RS232 interface 14 that joins with PC, described RS232 interface 14 joins with processor 6.
In the present embodiment, described photo-detector 1 is silicon photocell.
In the present embodiment, described processor 6 is single-chip microcomputer.
In the present embodiment, described display unit 7 is liquid crystal display.
The above; it is only preferred embodiment of the present utility model; be not that the utility model is imposed any restrictions; every any simple modification, change and equivalent structure of above embodiment being done according to the utility model technical spirit changes, and all still belongs in the protection domain of technical solutions of the utility model.
Claims (5)
1. LED street lamp test macro illuminance test circuit, it is characterized in that: comprise the photo-detector (1) for detection of tested LED street lamp light, the pre-amplification circuit (2) that joins with photo-detector (1), the filtering circuit (3) that joins with pre-amplification circuit (2), be the A/D change-over circuit (4) of digital signal with the analog signal conversion of filtering circuit (3) output, storage inside has the LED illuminance to calculate the memory circuit (5) of program, the calculated signals that detects according to photo-detector (1) goes out the processor (6) of tested LED street lamp illuminance, be used for showing the display unit (7) of described LED street lamp illuminance, the power supply (8) that joins with processor (6), join with processor (6) and be used for being connected with other external unit the USB interface (12) of carrying out auxiliary power supply when power supply (8) electric weight is not enough, the timing circuit (13) that joins with processor (6), the display driver circuit (9) that joins with A/D change-over circuit (4) and display unit (7) respectively, the on-off circuit (10) that joins with processor (6) and photo-detector (1) respectively and the failure alarm circuit (11) that joins with processor (6), described display driver circuit (9) comprises code translator (9-1) and the driver (9-2) that joins with code translator (9-1), described A/D change-over circuit (4) joins with filtering circuit (3), described memory circuit (5) and display unit (7) all join with processor (6), described code translator (9-1) joins with processor (6), and described driver (9-2) joins with display unit (7).
2. according to a kind of LED street lamp test macro illuminance test circuit claimed in claim 1, it is characterized in that: comprise that also for the RS232 interface (14) that joins with PC, described RS232 interface (14) joins with processor (6).
3. according to the described a kind of LED street lamp test macro illuminance test circuit of claim 1 or 2, it is characterized in that: described photo-detector (1) is silicon photocell.
4. according to the described a kind of LED street lamp test macro illuminance test circuit of claim 1 or 2, it is characterized in that: described processor (6) is single-chip microcomputer.
5. according to the described a kind of LED street lamp test macro illuminance test circuit of claim 1 or 2, it is characterized in that: described display unit (7) is liquid crystal display.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220631461 CN202974438U (en) | 2012-11-25 | 2012-11-25 | Illuminance test circuit for LED street lamp test system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220631461 CN202974438U (en) | 2012-11-25 | 2012-11-25 | Illuminance test circuit for LED street lamp test system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202974438U true CN202974438U (en) | 2013-06-05 |
Family
ID=48515497
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220631461 Expired - Fee Related CN202974438U (en) | 2012-11-25 | 2012-11-25 | Illuminance test circuit for LED street lamp test system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202974438U (en) |
-
2012
- 2012-11-25 CN CN 201220631461 patent/CN202974438U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130605 Termination date: 20131125 |