CN203015179U - LED infrared induction novel isolation-type power circuit - Google Patents
LED infrared induction novel isolation-type power circuit Download PDFInfo
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- CN203015179U CN203015179U CN 201220589496 CN201220589496U CN203015179U CN 203015179 U CN203015179 U CN 203015179U CN 201220589496 CN201220589496 CN 201220589496 CN 201220589496 U CN201220589496 U CN 201220589496U CN 203015179 U CN203015179 U CN 203015179U
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Abstract
The utility model discloses an LED infrared induction novel isolation-type power circuit which is composed of a rectifying circuit, an infrared induction circuit, an isolation type constant current source circuit and an optical lens. The optical lens is a Fresnel lens and disposed in front of an infrared induction sensor. The infrared induction isolation-type power circuit is characterized by high sensitivity, wide angle and the like, eliminates influences and inconvenient of a sound control lamp and a hand-operated switch lamp, and also solves the problem that an LED light source is directly driven by the isolation-type power circuit.
Description
Technical field
The utility model relates to the lighting power technique fields, the novel isolated power circuit of espespecially a kind of LED infrared induction.
Background technology
The LED electricity-saving lamp is the lighting source of new generation after compact fluorescent lamp (being common energy-saving lamp).Compare common energy-saving lamp, the environmental protection of LED electricity-saving lamp is not mercurous, recyclable recycling, power is little, high light efficiency, the long-life, namely open namely bright, anti-frequent switch, light decay is little, rich color, tunable optical, change is abundant.A large amount of common energy-saving lamps that use can cause mercury pollution, contaminated soil water source, thereby contaminated food products indirectly, and environmental hazard can not be despised.With transformer, the input and output of power supply are kept apart, even output short-circuit or people touch output and also the phenomenon that shocks by electricity can not occur like this, driven for the civil power alternating current input power supplying, isolation output is based on the requirement of safety standard.The isolation scheme advantage is his good stability, and it is strong that ability is disturbed in anti-sense, and fail safe is relatively easily controlled; The advantage of insulating power supply is embodied in isolation naturally, its surge on can the isolating exterior circuit, and pulse and interference etc. guarantee the stable of power supply output, effectively protect the LED light fixture.
Summary of the invention
The novel isolated power circuit of a kind of LED infrared induction of the utility model is characterized in that: a kind of working stability is provided, uses the isolated power circuit of infrared induction that contains step-down and the direct driving LED light source of current stabilization electronic devices and components.
To achieve these goals, technical solution of the present utility model is: the novel isolated power circuit of a kind of LED infrared induction is comprised of rectification circuit, infrared induction circuit, isolated constant-current source circuit and optical lens, described optical lens is Fresnel Lenses, rectification circuit is connected with external ac power source, and being connected in series cartridge fuse with the centre that is connected of live wire, connect piezo-resistance between live wire and zero line.
Described rectification circuit is made of diode D1～D4, cartridge fuse FUSE and piezo-resistance R1.
Described infrared induction circuit is made of resistance R 2～R13, electrochemical capacitor C1, C2 and C5, capacitor C 3, C4 and C6～C9, voltage stabilizing didoe D5, integrated IC1, controllable silicon SCR and infrared induction transducer PIR, wherein, resistance R 5 is photo resistance, and optical lens is placed in infrared induction transducer PIR the place ahead.
Described isolated constant-current source circuit is made of electrochemical capacitor C10, C11 and C15, capacitor C 12～C14 and C16, inductance L 1 and L2, isolated transformer T, diode D6～D9, integrated IC2 and resistance R 14～R22.
Beneficial features of the present utility model is: brighter when environment, the resistance of photo resistance can reduce, and what make the integrated IC of input is low level, thereby blocks triggering signal, the controllable silicon SCR cut-off, and the not conducting of isolated constant-current source circuit, LED array is not luminous; When environment is darker, it is large that the resistance of photo resistance can become, making the integrated IC's of input is high level, do not block triggering signal, in case the people enters in search coverage, the infrared radiation of human body focuses on through the part optical lens, and accepted by the infrared induction transducer, subsequent conditioning circuit is processed rear generation output signal after testing, outputs to the control utmost point of controllable silicon SCR through resistance by the output pin of integrated IC, drives the controllable silicon SCR conducting
,And then the isolated constant-current source circuit of conducting, LED array is luminous, and trigger, time-delay finishes, the controllable silicon SCR cut-off, LED array stops luminous, and the isolated power circuit of infrared induction is with characteristics such as its high sensitivity, wide angle, both solve noise effect and the inconvenience of acoustic control lamp and hand switch lamp, solved again the problem of the direct driving LED light source of isolated power circuit.
Description of drawings
Below in conjunction with the drawings and specific embodiments, the utility model is further described.
Accompanying drawing 1 is the circuit theory diagrams of the novel isolated power circuit of a kind of LED infrared induction.
Embodiment
as shown in drawings: the novel isolated power circuit of a kind of LED infrared induction is by rectification circuit, the infrared induction circuit, isolated constant-current source circuit and optical lens form, described optical lens is Fresnel Lenses, rectification circuit is connected with external ac power source, and be connected in series cartridge fuse FUSE with the centre that is connected of live wire, meet piezo-resistance R1 between live wire and zero line, rectification circuit is by diode D1～D4, cartridge fuse FUSE and piezo-resistance R1 consist of, the infrared induction circuit is by resistance R 2～R13, electrochemical capacitor C1, C2 and C5, capacitor C 3, C4 and C6～C9, voltage stabilizing didoe D5, integrated IC1, controllable silicon SCR and infrared induction transducer PIR consist of, wherein, resistance R 5 is photo resistance, optical lens is placed in infrared induction transducer PIR the place ahead, isolated constant-current source circuit is by electrochemical capacitor C10, C11 and C15, capacitor C 12～C14 and C16, inductance L 1 and L2, isolated transformer T, diode D6～D9, integrated IC2 and resistance R 14～R22 consist of.
the D2 of the rectifier bridge that resistance R 2 and diode D1～D4 forms is connected contact and is connected with D4, voltage stabilizing didoe D5 is connected with the positive terminal D1 of rectifier bridge and the contact of D3, the positive pole of electrochemical capacitor C1 is in parallel with voltage stabilizing didoe D5, and respectively with resistance R 4, the D end of infrared induction transducer PIR, the pin one of integrated IC1, pin 8 is connected with pin one 1, the other end of resistance R 4 respectively with photo resistance R5 be connected the pin 9 of IC1 and be connected, the S end of one termination infrared induction transducer PIR and the pin one 4 of integrated IC1 after resistance R 3 and capacitor C 3 are in parallel, the G end of its other end and another termination infrared induction transducer PIR of photo resistance R5 and resistance R 2 other end in parallel with voltage stabilizing didoe D5 with the positive pole of electrochemical capacitor C1, connect the pin one 0 of integrated IC1 after resistance R 6 and capacitor C 4 parallel connections, connect after resistance R 8 and capacitor C 6 parallel connections between the pin one 2 and pin one 3 of integrated IC1, connect after resistance R 9 and capacitor C 7 parallel connections between the pin one 5 and pin one 6 of integrated IC1, pin one 6 connects the negative pole of electrochemical capacitor C2, pin one 3 connects the positive pole of electrochemical capacitor C2 by resistance R 7, pin one 5 connects the positive pole of electrochemical capacitor C5 by resistance R 10, connect by resistance R 11 between the pin 5 of integrated IC1 and pin 6, pin 5 connects capacitor C 9, connect by resistance R 12 between the pin 3 of integrated IC1 and pin 4, pin 4 connects capacitor C 8, pin two is connected with the control utmost point of controllable silicon SCR by resistance R 13, the negative electrode of controllable silicon SCR respectively with the positive pole of electrochemical capacitor C10, one end of resistance R 14 and inductance L 1 is connected, the negative pole of electrochemical capacitor C10 is connected with an end of resistance R 15 and inductance L 2, the positive pole of electrochemical capacitor C11 is connected with the other end of resistance R 14 with inductance L 1 respectively, and with capacitor C 12, primary coil N1 one end of resistance R 16 and isolated transformer T is connected, the negative pole of electrochemical capacitor C11 is connected with the other end of resistance R 15 with inductance L 2 respectively, and with capacitor C 13 and C14, the pin S of integrated IC2, sample coil N3 one end of resistance R 20 and isolated transformer T is connected, the other end contact of capacitor C 12 and resistance R 16 is connected to the primary coil N1 other end of isolated transformer T by resistance R 17 and diode D6, the contact of the primary coil N1 other end of diode D6 and isolated transformer T is connected to the pin D of integrated IC2 by diode D8, the other end of capacitor C 13 and C14 is the two ends of connecting resistance R18 respectively, the pin BP of integrated IC2 is connected with the other end of capacitor C 13, the pin FB of integrated IC2 is connected with resistance R with the other end of resistance R 20 and is connected, the other end of resistance R 19 is connected with the sample coil N3 other end of isolated transformer T, and be connected with the other end of capacitor C 14 by diode D7, secondary coil N2 one end of isolated transformer T is connected with diode D9 with resistance R 21 respectively, resistance R 21 is with after capacitor C 16 is connected, be connected to the two ends of diode D9, resistance R 22 is in parallel with electrochemical capacitor C15, the negative pole of electrochemical capacitor C15 is connected with the other end of the secondary coil N2 of isolated transformer T, the positive pole of electrochemical capacitor C15 is connected with the other end of capacitor C 16 with diode D9, LED array is connected to the two ends of electrochemical capacitor C15.
During use, brighter when environment, the resistance of photo resistance R5 can reduce, and what make the integrated IC1 of input is low level, thereby blocks triggering signal, the controllable silicon SCR cut-off, and the not conducting of isolated constant-current source circuit, LED array is not luminous; When environment is darker, it is large that the resistance of photo resistance R5 can become, making the integrated IC1's of input is high level, do not block triggering signal, in case the people enters in search coverage, the infrared radiation of human body focuses on through the part optical lens, and accepted by infrared induction transducer PIR, subsequent conditioning circuit is processed rear generation output signal after testing, outputs to the control utmost point of controllable silicon SCR through resistance R 13 by the output pin 2 of integrated IC1, drives the controllable silicon SCR conducting
,And then the isolated constant-current source circuit of conducting, LED array is luminous, and trigger, and time-delay finishes, the controllable silicon SCR cut-off, LED array stops luminous.
The above; execution mode is only that preferred implementation of the present utility model is described; be not that scope of the present utility model is limited; under the prerequisite of the spirit that does not break away from the utility model technology; various distortion and improvement that this area engineers and technicians make the technical solution of the utility model all should fall in the definite protection range of claims of the present utility model.
Claims (2)
1. novel isolated power circuit of LED infrared induction, it is characterized in that: the isolated power circuit of described LED infrared induction is comprised of rectification circuit, touch switch circuit and isolated constant-current source circuit.
2. the novel isolated power circuit of a kind of LED infrared induction according to claim 1, it is characterized in that: described infrared induction circuit is by resistance R 2～R13, electrochemical capacitor C1, C2 and C5, capacitor C 3, C4 and C6～C9, voltage stabilizing didoe D5, integrated IC1, controllable silicon SCR and infrared induction transducer PIR consist of, wherein, resistance R 5 is photo resistance, optical lens is placed in infrared induction transducer PIR the place ahead, described isolated constant-current source circuit is by electrochemical capacitor C10, C11 and C15, capacitor C 12～C14 and C16, inductance L 1 and L2, isolated transformer T, diode D6～D9, integrated IC2 and resistance R 14～R22 consist of.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220589496 CN203015179U (en) | 2012-11-11 | 2012-11-11 | LED infrared induction novel isolation-type power circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220589496 CN203015179U (en) | 2012-11-11 | 2012-11-11 | LED infrared induction novel isolation-type power circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203015179U true CN203015179U (en) | 2013-06-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220589496 Expired - Fee Related CN203015179U (en) | 2012-11-11 | 2012-11-11 | LED infrared induction novel isolation-type power circuit |
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| Country | Link |
|---|---|
| CN (1) | CN203015179U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103338562A (en) * | 2013-07-04 | 2013-10-02 | 刘胜泉 | Driver integrating electronic time delay switch and LED constant current source |
| CN105491709A (en) * | 2015-12-21 | 2016-04-13 | 无锡中感微电子股份有限公司 | Sound control LED circuit |
-
2012
- 2012-11-11 CN CN 201220589496 patent/CN203015179U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103338562A (en) * | 2013-07-04 | 2013-10-02 | 刘胜泉 | Driver integrating electronic time delay switch and LED constant current source |
| CN103338562B (en) * | 2013-07-04 | 2015-08-19 | 刘胜泉 | The driver that a kind of electronic time-delay switch and LED constant current source are unified |
| CN105491709A (en) * | 2015-12-21 | 2016-04-13 | 无锡中感微电子股份有限公司 | Sound control LED circuit |
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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: 20130619 Termination date: 20131111 |