CN202975145U - 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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- CN202975145U CN202975145U CN 201220630145 CN201220630145U CN202975145U CN 202975145 U CN202975145 U CN 202975145U CN 201220630145 CN201220630145 CN 201220630145 CN 201220630145 U CN201220630145 U CN 201220630145U CN 202975145 U CN202975145 U CN 202975145U
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Abstract
The utility model discloses a power test circuit for an LED street lamp test system, comprising 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, a switching circuit for cutting off an LED street lamp power supply line and an alarm unit for sending an alarm signal when a measured power of an LED street lamp is greater than 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 displaying the measured LED power in real time, and a storing unit connected with the controller. The power test circuit is advantaged by reasonable design, simple structure, convenient wiring, capability of real-time measurement of the LED street lamp power in work, rapidity, safety, 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 power 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.Electric power about LED aspect electrical property is a vital parameter, to this, is necessary to design a kind of simple and practical power test circuit.
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 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 adopted in the utility model is: a kind of LED street lamp test macro power test circuit, it is characterized in that: comprise the current sampling circuit that is serially connected in LED street lamp power supply, road lamp power supply circuit and the electric current that flows through described LED street lamp is sampled, 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 be the A/D change-over circuit of digital signal with the analog signal conversion of current sampling circuit and voltage sampling circuit output, the computing circuit that joins with the A/D change-over circuit, the Type Active Power Converter that joins 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 that joins with the I/V change-over circuit, the alarm unit that is used for cutting off the on-off circuit of described LED street lamp power supply, road lamp power supply circuit and sends alerting signal when the measured power of described LED street lamp surpasses given reference value, the comparator circuit that joins with computing circuit and LED power signal and the given reference power of computing circuit output compared, the error compensation circuit that joins with comparator circuit, the display driver circuit that joins 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, it is characterized in that: described controller is single-chip microcomputer.
Above-mentioned a kind of LED street lamp test macro power test circuit, it is characterized in that: described I/V change-over circuit is comprised of integrated operational amplifier and feedback network.
Above-mentioned a kind of LED street lamp test macro power 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: reasonable in design, simple in structure, easy-to-connect can be measured in real time to the power of LED street lamp during work, fast, safety, 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-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 utility model comprises the current sampling circuit 1 that is serially connected in LED street lamp power supply, road lamp power supply circuit and the electric current that flows through described LED street lamp is sampled, 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 be the A/D change-over circuit 4 of digital signal with the analog signal conversion of current sampling circuit 1 and voltage sampling circuit 2 outputs, the computing circuit 8 that joins with A/D change-over circuit 4, the Type Active Power Converter 3 that joins with current sampling circuit 1 and voltage sampling circuit 2 respectively, the standard current signal of Type Active Power Converter 3 outputs is converted to the I/V change-over circuit 5 of voltage signal, the controller 6 that joins with I/V change-over circuit 5, when surpassing given reference value, the measured power of described LED street lamp is used for cutting off the on-off circuit 7 and the alarm unit 14 that sends alerting signal of described LED street lamp power supply, road lamp power supply circuit, the comparator circuit 9 that joins with computing circuit 8 and LED power signal and the given reference power of computing circuit 8 output compared, the error compensation circuit 10 that joins with comparator circuit 9, the display driver circuit 11 that joins 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 comprised 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 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 (4)
1. LED street lamp test macro power test circuit, it is characterized in that: comprise the current sampling circuit (1) that is serially connected in LED street lamp power supply, road lamp power supply circuit and the electric current that flows through described LED street lamp is sampled, 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 be the A/D change-over circuit (4) of digital signal with the analog signal conversion of current sampling circuit (1) and voltage sampling circuit (2) output, the computing circuit (8) that joins with A/D change-over circuit (4), the Type Active Power Converter (3) that joins 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) that joins with I/V change-over circuit (5), when surpassing given reference value, the measured power of described LED street lamp is used for the alarm unit (14) that cuts off the on-off circuit (7) of described LED street lamp power supply, road lamp power supply circuit and send alerting signal, the comparator circuit (9) that joins with computing circuit (8) and LED power signal and the given reference power of computing circuit (8) output compared, the error compensation circuit (10) that joins with comparator circuit (9), the display driver circuit (11) that joins 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 the described a kind of LED street lamp test macro power test circuit of claim 1 or 2, it is characterized in that: described I/V change-over circuit (5) is comprised of integrated operational amplifier and feedback network.
4. according to the described a kind of LED street lamp test macro power test circuit of 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 |
|---|---|---|---|
| CN 201220630145 CN202975145U (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 |
|---|---|---|---|
| CN 201220630145 CN202975145U (en) | 2012-11-23 | 2012-11-23 | Power test circuit for LED street lamp test system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202975145U true CN202975145U (en) | 2013-06-05 |
Family
ID=48516203
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220630145 Expired - Fee Related CN202975145U (en) | 2012-11-23 | 2012-11-23 | Power test circuit for LED street lamp test system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202975145U (en) |
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2012
- 2012-11-23 CN CN 201220630145 patent/CN202975145U/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: 20131123 |