CN103837736A - Power test circuit for LED street lamp test system - Google Patents
Power test circuit for LED street lamp test system Download PDFInfo
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- CN103837736A CN103837736A CN201210485495.2A CN201210485495A CN103837736A CN 103837736 A CN103837736 A CN 103837736A CN 201210485495 A CN201210485495 A CN 201210485495A CN 103837736 A CN103837736 A CN 103837736A
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Abstract
The invention discloses a power test circuit for an LED street lamp test system. The power test circuit comprises a current sampling circuit, a voltage sampling circuit, an A/D conversion circuit, an operational circuit, an active power converter, an I/V conversion circuit, a controller connected with the I/V conversion circuit, an on/off circuit for cutting off the power supply of the LED street lamp and an alarm unit for giving an alarm signal when the measured power of the LED street lamp exceeds a given reference value, a comparison circuit connected with the operational circuit, an error compensation circuit connected with the comparison circuit, a display drive circuit connected with the error compensation circuit, a display unit for displaying the power of the tested LED on a real-time basis and a storage unit connected with the controller. According to the invention, advantages of reasonable design, simple structure and convenient wire connection can be realized, the power of the LED street lamp can be measured on a real-time basis in the working process, and advantages of rapidity, safety and high test accuracy can be realized.
Description
Technical field
The present invention relates to a kind of test circuit, especially relate to a kind of LED street lamp test macro power test circuit.
Background technology
Along with LED is significantly in the lifting of lighting field application, LED enters rapidly illumination market, owing to having and the distinct space luminescence characteristic of traditional lighting light source, the method that is applicable to conventional light source measurement can not meet the quality control to LED illuminating product, for the requirement of LED illuminating product, constantly put into effect relevant regulations.And the popularization that Chinese Government throws light on for the LED of energy-conserving and environment-protective, the enforcement of ten ten thousand plans in city, makes various places detect and also have very large attention LED street lamp project photochromism.At present, compared with large LED bulb, be different from single LEDs for whole LED light fixture or light-emitting area, its area is larger, and light emission direction is strong, and in actual illumination environment, we need all test electrical property, optical property etc.Aspect electrical property, be a vital parameter about the electric power of LED, to this, be necessary to design a kind of simple and practical power test circuit.
Summary of the invention
Technical matters to be solved by this invention is for above-mentioned deficiency of the prior art, a kind of LED street lamp test macro power test circuit is provided, and it is simple in structure, easy-to-connect, work can be measured in real time to the power of LED street lamp, fast, safely, reliably.
For solving the problems of the technologies described above, the technical solution used in the present invention is: a kind of LED street lamp test macro power test circuit, it is characterized in that: comprise and be serially connected in the current sampling circuit of sampling in LED street lamp power supply, road lamp power supply circuit and to flowing through the electric current of described LED street lamp, the voltage sampling circuit that is connected in parallel on described LED street lamp two ends and its voltage is sampled, join with current sampling circuit and voltage sampling circuit respectively and the simulating signal of current sampling circuit and voltage sampling circuit output be converted to the A/D change-over circuit of digital signal, the computing circuit joining with A/D change-over circuit, the Type Active Power Converter joining with current sampling circuit and voltage sampling circuit respectively, the standard current signal of Type Active Power Converter output is converted to the I/V change-over circuit of voltage signal, the controller joining with I/V change-over circuit, in the time that the measured power of described LED street lamp exceedes given reference value for cutting off the on-off circuit of described LED street lamp power supply, road lamp power supply circuit and sending the alarm unit of alerting signal, the comparator circuit that the LED power signal joining with computing circuit and computing circuit is exported and given reference power compare, the error compensation circuit joining with comparator circuit, the display driver circuit joining with error compensation circuit, the display unit that tested LED power is shown in real time and the storage unit of joining with controller, described I/V change-over circuit and Type Active Power Converter join, and described on-off circuit joins with controller and described LED street lamp respectively, and described display driver circuit joins with display unit and controller respectively, and described alarm unit and controller join.
Above-mentioned a kind of LED street lamp test macro power test circuit, is characterized in that: described controller is single-chip microcomputer.
Above-mentioned a kind of LED street lamp test macro power test circuit, is characterized in that: described I/V change-over circuit is made up of integrated operational amplifier and feedback network.
Above-mentioned a kind of LED street lamp test macro power test circuit, is characterized in that: described display unit is liquid crystal display.
The present invention compared with prior art has the following advantages: reasonable in design, simple in structure, easy-to-connect, can measure in real time to the power of LED street lamp when work, fast, safety, measuring accuracy is high.
Below by drawings and Examples, technical scheme of the present invention is described in further detail.
Accompanying drawing explanation
Fig. 1 is circuit theory diagrams of the present invention.
Description of reference numerals:
1-current sampling circuit; 2-voltage sampling circuit; 3-Type Active Power Converter;
4-A/D change-over circuit; 5-I/V change-over circuit; 6-controller;
7-on-off circuit; 8-computing circuit; 9-comparator circuit;
10-error compensation circuit; 11-display driver circuit; 12-display unit;
13-storage unit; 14-alarm unit.
Embodiment
As shown in Figure 1, the present invention includes and be serially connected in the current sampling circuit 1 of sampling in LED street lamp power supply, road lamp power supply circuit and to flowing through the electric current of described LED street lamp, the voltage sampling circuit 2 that is connected in parallel on described LED street lamp two ends and its voltage is sampled, join with current sampling circuit 1 and voltage sampling circuit 2 respectively and the simulating signal that current sampling circuit 1 and voltage sampling circuit 2 are exported be converted to the A/D change-over circuit 4 of digital signal, the computing circuit 8 joining with A/D change-over circuit 4, the Type Active Power Converter 3 joining with current sampling circuit 1 and voltage sampling circuit 2 respectively, the standard current signal that Type Active Power Converter 3 is exported is converted to the I/V change-over circuit 5 of voltage signal, the controller 6 joining with I/V change-over circuit 5, in the time that the measured power of described LED street lamp exceedes given reference value for cutting off the on-off circuit 7 of described LED street lamp power supply, road lamp power supply circuit and sending the alarm unit 14 of alerting signal, the comparator circuit 9 that the LED power signal joining with computing circuit 8 and computing circuit 8 is exported and given reference power compare, the error compensation circuit 10 joining with comparator circuit 9, the display driver circuit 11 joining with error compensation circuit 10, the display unit 12 that tested LED power is shown in real time and the storage unit 13 of joining with controller 6, described I/V change-over circuit 5 joins with Type Active Power Converter 3, and described on-off circuit 7 joins with controller 6 and described LED street lamp respectively, and described display driver circuit 11 joins with display unit 12 and controller 6 respectively, and described alarm unit 14 joins with controller 6.
In the present embodiment, described controller is single-chip microcomputer.
In the present embodiment, described I/V change-over circuit 5 is made up of integrated operational amplifier and feedback network.
In the present embodiment, described display unit 12 is liquid crystal display.
The above; it is only preferred embodiment of the present invention; not the present invention is imposed any restrictions, every any simple modification of above embodiment being done according to the technology of the present invention essence, change and equivalent structure change, and all still belong in the protection domain of technical solution of the present invention.
Claims (4)
1. a LED street lamp test macro power test circuit, it is characterized in that: comprise and be serially connected in the current sampling circuit (1) of sampling in LED street lamp power supply, road lamp power supply circuit and to flowing through the electric current of described LED street lamp, the voltage sampling circuit (2) that is connected in parallel on described LED street lamp two ends and its voltage is sampled, join with current sampling circuit (1) and voltage sampling circuit (2) respectively and the simulating signal of current sampling circuit (1) and voltage sampling circuit (2) output be converted to the A/D change-over circuit (4) of digital signal, the computing circuit (8) joining with A/D change-over circuit (4), the Type Active Power Converter (3) joining with current sampling circuit (1) and voltage sampling circuit (2) respectively, the standard current signal of Type Active Power Converter (3) output is converted to the I/V change-over circuit (5) of voltage signal, the controller (6) joining with I/V change-over circuit (5), in the time that the measured power of described LED street lamp exceedes given reference value for cutting off the on-off circuit (7) of described LED street lamp power supply, road lamp power supply circuit and sending the alarm unit (14) of alerting signal, the comparator circuit (9) that the LED power signal joining with computing circuit (8) and computing circuit (8) is exported and given reference power compare, the error compensation circuit (10) joining with comparator circuit (9), the display driver circuit (11) joining with error compensation circuit (10), the display unit (12) that tested LED power is shown in real time and the storage unit (13) of joining with controller (6), described I/V change-over circuit (5) joins with Type Active Power Converter (3), described on-off circuit (7) joins with controller (6) and described LED street lamp respectively, described display driver circuit (11) joins with display unit (12) and controller (6) respectively, and described alarm unit (14) joins with controller (6).
2. according to a kind of LED street lamp test macro power test circuit claimed in claim 1, it is characterized in that: described controller is single-chip microcomputer.
3. according to a kind of LED street lamp test macro power test circuit described in claim 1 or 2, it is characterized in that: described I/V change-over circuit (5) is made up of integrated operational amplifier and feedback network.
4. according to a kind of LED street lamp test macro power test circuit described in claim 1 or 2, it is characterized in that: described display unit (12) is liquid crystal display.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210485495.2A CN103837736A (en) | 2012-11-23 | 2012-11-23 | Power test circuit for LED street lamp test system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210485495.2A CN103837736A (en) | 2012-11-23 | 2012-11-23 | Power test circuit for LED street lamp test system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103837736A true CN103837736A (en) | 2014-06-04 |
Family
ID=50801441
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210485495.2A Pending CN103837736A (en) | 2012-11-23 | 2012-11-23 | Power test circuit for LED street lamp test system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103837736A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105792436A (en) * | 2016-04-21 | 2016-07-20 | 矽力杰半导体技术(杭州)有限公司 | Switching power supply controller and switching power supply |
| CN113160599A (en) * | 2021-03-26 | 2021-07-23 | 浙江浙大中控信息技术有限公司 | Method for judging signal lamp fault based on active power |
-
2012
- 2012-11-23 CN CN201210485495.2A patent/CN103837736A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105792436A (en) * | 2016-04-21 | 2016-07-20 | 矽力杰半导体技术(杭州)有限公司 | Switching power supply controller and switching power supply |
| CN113160599A (en) * | 2021-03-26 | 2021-07-23 | 浙江浙大中控信息技术有限公司 | Method for judging signal lamp fault based on active power |
| CN113160599B (en) * | 2021-03-26 | 2022-06-24 | 浙江中控信息产业股份有限公司 | Method for judging signal lamp fault based on active power |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140604 |