CN201398185Y - Light-operated switch - Google Patents
Light-operated switch Download PDFInfo
- Publication number
- CN201398185Y CN201398185Y CN2009203026366U CN200920302636U CN201398185Y CN 201398185 Y CN201398185 Y CN 201398185Y CN 2009203026366 U CN2009203026366 U CN 2009203026366U CN 200920302636 U CN200920302636 U CN 200920302636U CN 201398185 Y CN201398185 Y CN 201398185Y
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- CN
- China
- Prior art keywords
- light
- circuit
- operated switch
- utility
- model
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
Abstract
The utility model relates to automatic control technology, in particular to a light-operated switch circuit. Aiming at the disadvantages of the prior art that a control circuit is not stable and the light-operated switch has no delay function, the utility model discloses a light-operated switch with stable control and delay function. The technical proposal of the utility model is as follows: the light-operated switch comprises a power supply circuit, a photosensor element, a control circuit and a switch element, wherein the control circuit consists of an integrated circuit. The light-operatedswitch further comprises a delay circuit which is connected with the control circuit. The utility model adopts the integrated circuit, thus having simple circuit, low cost and stable and reliable performance. The application of the utility model to lighting control completely solves the problem that a common light-operated switch twinkles at critical points. The utility model does not twinkle in work and does not require debugging basically, thereby being applicable to mass production, in particular to the control of resistive load.
Description
Technical field
The utility model relates to automatic control technology, particularly a kind of light-controlled switching circuit.
Background technology
Light-controlled switching circuit can be controlled load (illuminating lamp) according to ambient lighting intensity.The light-controlled switching circuit of prior art generally comprises power circuit, light-sensitive element, control circuit and switch element etc.Its basic functional principle is, utilizes light-sensitive element testing environment luminous intensity, and when ambient light intensity was low, the action of control circuit output control signal driving switch element was connected load power source and thrown light on; When ambient light intensity during greater than set point, the switching off load power supply.The control circuit of prior art adopts the discrete element, utilizes resistance, electric capacity triode to realize control.When the luminous intensity of light-sensitive element sampling in the conducting of triode with the critical point that ends is, will constantly repeat out and close straight action, until sampled signal away from triode conducting and the critical point that ends.Will cause like this controlled lamp in the flicker of certain period.And common light-operated switch does not have delayed start-up, closing function.
The utility model content
Technical problem to be solved in the utility model is exactly the control circuit instability at prior art, and light-operated switch does not have the shortcoming of delay function, and a kind of control stabilization is provided, and has the light-operated switch of time-delay controlled function.
The utility model solve the technical problem, and the technical scheme of employing is, light-operated switch comprises power circuit, light-sensitive element, control circuit and switch element, it is characterized in that, described control circuit is made of integrated circuit;
Further, described light-operated switch also comprises delay circuit, and described delay circuit is connected with control circuit;
Concrete, described control circuit is made of 555 time-base circuits;
Concrete, described power circuit is made of the diode rectification electric bridge; Described diode rectification electric bridge ac input end is connected with electrical network by load;
More specifically, described switch element is an one-way SCR, and described one-way SCR is connected in parallel on described diode rectification electric bridge dc output end.
The beneficial effects of the utility model are, adopt integrated circuit, and circuit is simple, with low cost, stable performance, reliable; Be used for illumination control, thoroughly solved the flicker problem of common light-operated switch, flicker free during work in critical point; Basically do not need debugging, be fit to produce in batches.
Description of drawings
Fig. 1 is the circuit diagram of embodiment.
Embodiment
Below in conjunction with drawings and Examples, describe the technical solution of the utility model in detail.
Light-operated delay switch of the present utility model, control circuit adopt integrated circuit to constitute, and its output control signal is stable high level or low level, does not have the problem of so-called critical point.Integrated circuit of the present utility model can be selected 555 time-base circuits of integrated circuits commonly used, particularly technology maturation such as voltage comparator, rest-set flip-flop, is fit to very much constitute control circuit of the present utility model.
Embodiment
Referring to Fig. 1, this routine light-operated switch comprises power circuit, light-sensitive element, control circuit and switch element.Control circuit is made of integrated circuit (IC) 1 among the figure, and what this example was selected for use is the NE555 time-base circuit.Power circuit is made of diode rectification electric bridge D1, and the ac input end of diode rectification electric bridge D1 is connected with the alternating current 220V electrical network by load L1 (incandescent lamp).The sort circuit connected mode, load L1 can play metering function, even diode rectification electric bridge D1 short circuit can not cause danger yet.Sort circuit has certain requirement to load L1, even it is in non operating state, also can provide certain current path, generally should select resistive load, as incandescent lamp etc.This routine delay circuit is made of capacitor C 1, resistance R G and resistance R 2, and capacitor C 1 is connected between 2 pin and 6 pin of power positive end and integrated circuit (IC) 1, produces time-delay by its charge and discharge process.This routine light-sensitive element is resistance R G (photo resistance), and the variation of luminous intensity causes its change in voltage, through resistance R 3 and R2 dividing potential drop, 2 pin and 6 pin of the voltage input ic IC1 of this variation.Capacitor C 2 and voltage stabilizing didoe D2 constitute filter circuit of pressure-stabilizing among the figure, cooperate dropping resistor R1 to provide normal working voltage for integrated circuit.This routine switch element is one-way SCR Q1, and the bleeder circuit that its control end is formed by resistance R 4, resistance R 5 is connected with 3 pin of integrated circuit (IC) 1, and its anode and negative electrode are connected in parallel on the dc output end of diode rectification electric bridge D1.
The operation principle of this routine light-operated switch is, alternating current 220V/50Hz civil power obtains the direct voltage of about 300V after diode rectification electric bridge D1 rectification, this voltage is added on the one-way SCR Q1, one-way SCR Q1 is in off-state when not having controlled signal.Simultaneously the 300V direct voltage is through resistance R 1 dividing potential drop, and through capacitor C 2 and voltage stabilizing didoe D2 voltage stabilizing, be filtering to 9.1V, be the 8 pin power supply of NE555.Resistance R G and resistance R 2, R3 form outside bleeder circuit, and two comparators for NE555 inside provide comparative voltage simultaneously.When ambient light intensity is enough (as daytime), resistance R G is a low-resistance, and this moment, 2 pin and 6 pin of NE555 were high potential, the trigger locking, and 3 pin no-outputs, it is in off-state one-way SCR, and it is not luminous that incandescent lamp L1 can not get enough electric currents.When ambient light intensity reduces (as night), photo resistance RG is a high resistant, this moment, 2 pin and 6 pin of NE555 were electronegative potential, 3 pin output signals, drive one-way SCR Q1 conducting, incandescent lamp L1 is by the one-way SCR Q1 of conducting and two brachium pontis of diode rectification electric bridge D1, obtains enough electric currents and luminous.Because of the external delay capacitor C1 of 6 pin, so can delay time when 3 pin change in voltage, delay time is by the resistance decision of capacity, resistance R 2 and the resistance R G of capacitor C 1.The load current of this routine circuit requirement diode rectification electric bridge D1 and controllable silicon Q1 should be more than or equal to the operating current of incandescent lamp L1.This routine light-operated switch is particularly suitable for the control of resistive load.
Claims (5)
1. light-operated switch comprises power circuit, light-sensitive element, control circuit and switch element, it is characterized in that, described control circuit is made of integrated circuit.
2. light-operated switch according to claim 1 is characterized in that described light-operated switch also comprises delay circuit, and described delay circuit is connected with control circuit.
3. light-operated switch according to claim 1 is characterized in that described control circuit is made of 555 time-base circuits.
4. according to claim 1,2 or 3 described light-operated switches, it is characterized in that described power circuit is made of the diode rectification electric bridge; Described diode rectification electric bridge ac input end is connected with electrical network by load.
5. light-operated switch according to claim 4 is characterized in that, described switch element is an one-way SCR, and described one-way SCR is connected in parallel on described diode rectification electric bridge dc output end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203026366U CN201398185Y (en) | 2009-04-28 | 2009-04-28 | Light-operated switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203026366U CN201398185Y (en) | 2009-04-28 | 2009-04-28 | Light-operated switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201398185Y true CN201398185Y (en) | 2010-02-03 |
Family
ID=41620716
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009203026366U Expired - Fee Related CN201398185Y (en) | 2009-04-28 | 2009-04-28 | Light-operated switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201398185Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102594300A (en) * | 2011-01-12 | 2012-07-18 | 富泰华工业（深圳）有限公司 | Light-operated signal generating circuit |
| CN104065364B (en) * | 2014-06-25 | 2017-05-03 | 浙江帅康电气股份有限公司 | Intelligent keyboard switch and kitchen ventilator with keyboard switch |
-
2009
- 2009-04-28 CN CN2009203026366U patent/CN201398185Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102594300A (en) * | 2011-01-12 | 2012-07-18 | 富泰华工业（深圳）有限公司 | Light-operated signal generating circuit |
| CN102594300B (en) * | 2011-01-12 | 2016-08-17 | 富泰华工业（深圳）有限公司 | Light-operated signal generating circuit |
| CN104065364B (en) * | 2014-06-25 | 2017-05-03 | 浙江帅康电气股份有限公司 | Intelligent keyboard switch and kitchen ventilator with keyboard switch |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Sichuan Taijing Microelectronics Co., Ltd. Assignor: Chengdu Yisanwu Star Industry Co., Ltd. Contract record no.: 2011510000177 Denomination of utility model: Intelligent light-operated switch device Granted publication date: 20100203 License type: Exclusive License Record date: 20110819 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100203 Termination date: 20150428 |
|
| EXPY | Termination of patent right or utility model |