CN2383291Y - Pulse infrared light source - Google Patents
Pulse infrared light source Download PDFInfo
- Publication number
- CN2383291Y CN2383291Y CN 99225369 CN99225369U CN2383291Y CN 2383291 Y CN2383291 Y CN 2383291Y CN 99225369 CN99225369 CN 99225369 CN 99225369 U CN99225369 U CN 99225369U CN 2383291 Y CN2383291 Y CN 2383291Y
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- drive circuit
- pulse
- circuit
- light source
- infrared
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Abstract
The utility model discloses a pulse infrared light source for illumination of an infrared television camera. The pulse infrared light source comprises a pulse generator, a drive circuit, and an infrared luminous pipe array. A pulse signal is generated from the pulse generator and is output to the drive circuit. The pulse signal is output in a magnifying mode by the drive circuit and is input to the infrared luminous pipe array. Infrared light rays are transmitted at intervals from the infrared luminous pipe array under the action of the pulse signal. The pulse infrared light source can effectively enhance photoelectric conversion efficiency. The infrared luminous pipe array can reinforce the luminous intensity of a light source and enhance the lighting distance of the light source.
Description
The utility model relates to by the control circuit device of pulse to the lamp power supply, more specifically refers to a kind of pulse infrared light source.
The existing illuminating infrared light supply of infrared sensitive television camera, general LED infraluminescence pipe, the current-limiting resistance of adopting, infraluminescence pipe, the two series connection back of current-limiting resistance are by DC power supply, the luminous power of such infrared light supply is subjected to the restriction of led indicator, the electric current of its injection is bigger, and photoelectric conversion efficiency is not high; The index of the maximum current of LED infraluminescence pipe not performance again on the other hand; The luminous intensity of light source is not high besides, and irradiation distance is nearer.
For this reason, the purpose of this utility model is the shortcoming that exists at above-mentioned infrared light supply, proposes a kind of pulse infrared light source.
To achieve these goals, the utility model adopts following technical scheme: this pulse infrared light source includes pulse generator, drive circuit, infraluminescence pipe array, pulse generator produces pulse signal and exports drive circuit to, drive circuit amplifies the input that exports infraluminescence pipe array to pulse signal, and infraluminescence pipe array is launched Infrared in the compartment of terrain under the effect of pulse signal.
Because the utility model will have the direct current infrared light supply that is used for the infrared sensitive television camera illumination now and change the pulse infrared light source of being made up of pulse generator, drive circuit, infraluminescence pipe array into, therefore, this light source can improve photoelectric conversion efficiency effectively, make the luminous power of infrared light supply not be subjected to the restriction of led indicator basically, the electric current of its injection is less and the index of the maximum current of LED infraluminescence pipe can be given full play to; In addition, infraluminescence pipe array can add the luminous intensity of intense light source, improves the irradiation distance of light source.
Below in conjunction with drawings and Examples, the utility model is described in further detail:
Fig. 1 is a circuit square frame principle schematic diagram of the present utility model.
Fig. 2 is circuit theory diagrams of the present utility model.
Please consult shown in Figure 1 earlier, this pulse infrared light source includes pulse generator, drive circuit, infraluminescence pipe array, pulse generator produces pulse signal and exports drive circuit to, drive circuit amplifies the input that exports infraluminescence pipe array to pulse signal, and infraluminescence pipe array is launched Infrared in the compartment of terrain under the effect of pulse signal.
Please again in conjunction with shown in Figure 2, said pulse generator includes oscillating circuit, shaping circuit, oscillating circuit will produce pulse waveform signal and export to shaping circuit, shaping circuit with this pulse signal shaping after as pulse generator output be connected to the input of drive circuit, drive circuit comprises a stage drive circuit and secondary drive circuit, the input of one stage drive circuit connects the output of the shaping circuit of pulse signal generator, the input of secondary drive circuit connects the output of a stage drive circuit, and the output of secondary drive circuit connects the input of infraluminescence pipe array.
Please continue to consult Fig. 2, oscillating circuit, stage drive circuit employing model in shaping circuit and the drive circuit is 4069 hex inverter ic chip 1, inverter A wherein, inverter B is as the main devices of oscillating circuit, inverter A and inverter B and resistance R 1, R2, capacitor C 1 constitutes oscillating circuit, inverter C is as shaping circuit, inverter D, E, F is all as a stage drive circuit of drive circuit, it is the Darlington integrated package of MC1413 and the secondary drive circuit that constitutes drive circuit that IC2 adopts model, the pin 1 of IC2 connects the output of shaping circuit by resistance R 3, pin 2,3 connect the output of inverter D by resistance R 4, pin 4,5 connect the output of inverter E by resistance R 5, pin 6,7 connect the output of inverter F by resistance R 6, pin 8,9 respectively ground connection and power supplys, pin 10 to pin 16 all as the output of drive circuit.In the utility model, infraluminescence pipe array is made up of 7 * 14 LED pipes, totally 98 infraluminescence pipes have promptly been comprised from HWL1 to HWL98, certainly be not limited to such quantity and arrangement, can carry out different arrangements according to actual needs, purpose is the intensity and the projection distance that will strengthen the emission light of light source, in parallel after connecting with infraluminescence pipe HWL8 to HWL14 after infraluminescence pipe HWL1 to the HWL7 series connection, the arrangement of later infraluminescence pipe all is same as the arrangement of infraluminescence pipe HW14 and infraluminescence pipe before again.Resistance R 7 to R13 is all as biasing resistor.
Pulse generator produces 1: 1 pulse signal, when pulse high level triggers drive circuit, and make the infraluminescence pipe LED in the infraluminescence pipe array open-minded, send the high strength infrared light, when pulses low arrives, drive circuit cuts out, and the infraluminescence Guan Jun in the infraluminescence pipe array does not work, the heat of the accumulation that dissipates.This infraluminescence pipe with pulse mode work, pulse current can reach general 2-3 times of being suitable for value.When driving pulse in the time of 1: 1, current effective value is peaked 1/2, and under the condition of same power consumption, the luminous efficiency of the infraluminescence pipe of this pulse mode work is two times of DC operation mode, reached the purpose of efficient energy-saving, increased the irradiation distance of infrared light supply simultaneously, projection distance can reach 15-20M.
Claims (3)
1, a kind of infrared pulse light source as the infrared sensitive television camera light source, it is characterized in that: this pulse infrared light source includes pulse generator, drive circuit, infraluminescence pipe array, pulse generator produces pulse signal and exports drive circuit to, drive circuit amplifies the input that exports infraluminescence pipe array to pulse signal, and infraluminescence pipe array is launched Infrared in the compartment of terrain under the effect of pulse signal.
2, infrared pulse light source as claimed in claim 1, it is characterized in that: said pulse generator includes oscillating circuit, shaping circuit, oscillating circuit will produce pulse waveform signal and export to shaping circuit, and shaping circuit is connected to the input of drive circuit as the output of pulse generator after with this pulse signal shaping; Said drive circuit comprises a stage drive circuit and secondary drive circuit, the input of one stage drive circuit connects the output of the shaping circuit of pulse signal generator, the input of secondary drive circuit connects the output of a stage drive circuit, and the output of secondary drive circuit connects the input of infraluminescence pipe array.
3, infrared pulse light source as claimed in claim 2, it is characterized in that: the stage drive circuit employing model in said oscillating circuit, shaping circuit and the drive circuit is 4069 hex inverter integrated package, inverter A and inverter B and resistance R 1, R2, capacitor C 1 constitute oscillating circuit, inverter C is as shaping circuit, and inverter D, E, F are all as a stage drive circuit of drive circuit; It is the Darlington integrated package of MC1413 and the secondary drive circuit that constitutes drive circuit that IC2 adopts model; Infraluminescence pipe array is arranged by 7 * 14 infraluminescence pipe connection in series-parallel and is constituted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99225369 CN2383291Y (en) | 1999-01-11 | 1999-01-11 | Pulse infrared light source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99225369 CN2383291Y (en) | 1999-01-11 | 1999-01-11 | Pulse infrared light source |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2383291Y true CN2383291Y (en) | 2000-06-14 |
Family
ID=34015251
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99225369 Expired - Fee Related CN2383291Y (en) | 1999-01-11 | 1999-01-11 | Pulse infrared light source |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2383291Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100411943C (en) * | 2005-02-23 | 2008-08-20 | 本田技研工业株式会社 | Vehicle recognition allowing device |
-
1999
- 1999-01-11 CN CN 99225369 patent/CN2383291Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100411943C (en) * | 2005-02-23 | 2008-08-20 | 本田技研工业株式会社 | Vehicle recognition allowing device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |