CN203708578U - Infrared inductive circuit - Google Patents
Infrared inductive circuit Download PDFInfo
- Publication number
- CN203708578U CN203708578U CN201420012873.XU CN201420012873U CN203708578U CN 203708578 U CN203708578 U CN 203708578U CN 201420012873 U CN201420012873 U CN 201420012873U CN 203708578 U CN203708578 U CN 203708578U
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- Prior art keywords
- resistance
- infrared induction
- electronic switch
- electric capacity
- branch road
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Abstract
The utility model discloses an infrared inductive circuit which includes a circuit interface. The circuit interface comprises a power pin, a grounding pin and a control pin, the power pin is connected with a power end of an infrared inductive module via a voltage reducing module and a voltage stabilizing module in serial connection, electronic switch branches are connected between the control pin and the ground, and the infrared inductive module is connected with the electronic switch branches and controls on/off states of the electronic switch branches. Compared with the prior art, the infrared inductive circuit has a strong adaptability to power supplies, i.e., a dc power supply in the voltage from 8 to 300V can be used, and use is safe; two functions are integrated to the PCB circuit, i.e., an LED lamp is controlled to be quenched or slightly lightened after people leave the induction range; and an output PIN of a jumper wire is switched and shared, and the amount of PINs of the binding posts is decreased, thereby greatly saving the material cost, simplifying wiring of the circuit, and realizing diverse functions.
Description
Technical field
The utility model relates to infrared induction circuit, relates in particular to one and has bifunctional infrared induction circuit.
Background technology
Infrared induction circuit is controlled the switch of light fixture by induction human body, be the common circuit in lamp control system.There is following defect in the infrared induction circuit using on the market at present: 1, use power supply single, can only use insulating power supply or non-insulating power supply, but on market, the complexity of LED power supply is various, light uses a power supply can not satisfy the demand far away.2, function singleness, can not be used as dual purpose.When sensor circuit senses human body, LED opens by maximum power; While not sensing human body, its operating state has two kinds of selections, and the 1st, control LED lamp and extinguish, the 2nd, control LED lamp glimmer, 15-30% when power output is full power.And existing sensor circuit is these two kinds of functions cannot be made on a PCB circuit.
Utility model content
The utility model is that will to solve existing sensor circuit power adaptation not strong, and the problem of function singleness, proposes a kind of difunctional infrared induction circuit.
For solving the problems of the technologies described above, the technical scheme the utility model proposes is a kind of infrared induction circuit of design, it has line interface, line interface comprises supply pin, grounding leg and control pin, supply pin is connected the power end of infrared induction module with Voltage stabilizing module by the voltage reduction module of series connection, connecting electronic switching branches between described control pin and ground, infrared induction module connecting electronic switching branches is also controlled its break-make.
Described electronic switch branch road is the first electronic switch branch road, and it comprises the 11 resistance and metal-oxide-semiconductor of series connection, the grid of the metal-oxide-semiconductor described infrared induction module that is of coupled connections.
Described electronic switch branch road is the second electronic switch branch road, it comprises the tenth resistance, shunt resistance and the output control IC of series connection, the control end of the IC described infrared induction module that is of coupled connections is controlled in output, and described shunt resistance comprises the 8th resistance and the 9th resistance in parallel.
Described electronic switch branch road comprises the first and second electronic switch branch roads, the control pin of described line interface connects the fixed contact of a selector switch K, between moving contact of selector switch and ground, be connected in series the first electronic switch branch road, between another moving contact of selector switch and ground, be connected in series the second electronic switch branch road, selector switch is selected a gating first or second electronic switch branch road; Wherein the first electronic switch branch road comprises the 11 resistance and metal-oxide-semiconductor of series connection, the grid of the metal-oxide-semiconductor described infrared induction module that is of coupled connections; The second electronic switch branch road comprises the tenth resistance, shunt resistance and the output control IC of series connection, and the control end of the IC described infrared induction module that is of coupled connections is controlled in output, and described shunt resistance comprises the 8th resistance and the 9th resistance in parallel.
Described voltage reduction module comprises: order is serially connected in the 20 resistance, the first resistance, the first electric capacity between line interface supply pin and ground, and the first electric capacity two ends also connect voltage stabilizing didoe, and voltage stabilizing didoe plus earth, negative electrode connect described Voltage stabilizing module.
Described Voltage stabilizing module has voltage stabilizing chip, voltage stabilizing didoe negative electrode described in voltage stabilizing chip input termination, voltage stabilizing chip output connects the second electric capacity, second resistance one end, the second electric capacity other end ground connection, one end of another termination of the second resistance the 3rd electric capacity and the 4th electric capacity, be connected the power end of described infrared induction module and send stabilized voltage power supply, the other end ground connection of the 3rd electric capacity and the 4th electric capacity.
Described infrared induction module has infrared induction chip, adjustable side time of delay of infrared induction chip connects the 5th electric capacity, the 3rd resistance, one end of the 4th resistance, the other end ground connection of the 5th electric capacity and the 4th resistance, stabilized voltage power supply described in another termination of the 3rd resistance, photoinduction termination the 6th electric capacity of infrared induction chip, the 5th resistance, one end of the 6th resistance, stabilized voltage power supply described in another termination of the 5th resistance, the other end ground connection of the 6th electric capacity, the other end of the 6th resistance is by photodiode ground connection, the output control terminal of infrared induction chip connects the grid of described metal-oxide-semiconductor and the control end of output control IC by the 7th resistance.
Compared with prior art, the utility model power adaptation is strong, and DC voltage 8-300V can use, and uses safety; Two kinds of functions are accomplished on a PCB circuit, can be chosen in human body leaves and controls LED lamp after sensation scope and extinguish or glimmer, utilize the switching of wire jumper output PIN pin to share, reduce the PIN pin quantity of binding post, greatly save material cost, simplify the mode of connection of circuit, accomplished functional diversities.
Accompanying drawing explanation
Fig. 1 is the utility model the first electronic switch branch road theory diagram;
Fig. 2 is the utility model the second electronic switch branch road theory diagram;
Fig. 3 is the utility model the first and second electronic switch branch road theory diagrams;
Fig. 4 is the application schematic diagram of the utility model the first electronic switch branch road;
Fig. 5 is the application schematic diagram of the utility model the second electronic switch branch road;
Fig. 6 is the utility model the first electronic switch subcircuits figure;
Fig. 7 is the utility model the second electronic switch subcircuits figure;
Fig. 8 is the utility model the first and second electronic switch subcircuits figure.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the utility model is described in further detail.Should be appreciated that specific embodiment described herein is only for explaining the utility model, and be not used in restriction the utility model.
The utility model has disclosed a kind of infrared induction circuit, it has line interface, line interface comprises supply pin, grounding leg and control pin, supply pin is connected the power end of infrared induction module with Voltage stabilizing module by the voltage reduction module of series connection, connecting electronic switching branches between described control pin and ground, infrared induction module connecting electronic switching branches is also controlled its break-make.When use, in the time not having human body to appear near inductor, infrared induction module is not triggered, electronic switch cut-off, and control pin and lower margin break; In the time having human body to appear near inductor, infrared induction module is triggered, electronic switch conducting, and the element in electronic switch branch road is linked between control pin and lower margin, and whole LED control circuit is played a role.
Referring to Fig. 1, described electronic switch branch road is the first electronic switch branch road.As shown in Figure 6, it comprises the 11 resistance R 11 and the metal-oxide-semiconductor Q1 of series connection to the circuit of the first electronic switch branch road, the grid of the metal-oxide-semiconductor described infrared induction module that is of coupled connections.The first electronic switch branch road plays switch, and it is connected in LED major loop.Referring to Fig. 4, in the time sensing human body, the grounding leg of this circuit and control pin conducting, the direct current of driving power output through LED, through this circuit to ground, form a complete loop, LED full power is entirely bright.In the time there is no human body, the grounding leg of this circuit and control pin cut-off, current supply circuit disconnects, and LED extinguishes.
Referring to Fig. 2, described electronic switch branch road is the second electronic switch branch road.The circuit of the second electronic switch branch road as shown in Figure 7, it comprises the tenth resistance R 10, shunt resistance and the output control IC(Q2 of series connection, in preferred embodiment, adopt TF229C), the control end of the IC described infrared induction module that is of coupled connections is controlled in output, and described shunt resistance comprises the 8th resistance R 8 and the 9th resistance R 9 in parallel.The second electronic switch branch road plays the effect that is incorporated to or excises shunt resistance, and grounding leg and control pin are equivalent to be attempted by the sample resistance two ends in major loop.Referring to Fig. 5, in the time sensing human body, between the grounding leg of this circuit and control pin, access shunt resistance, the resistance of shunt resistance is little, power is large, the voltage at sample resistance two ends is greatly reduced, central control circuit samples low-voltage, can make driving power export by full power, and LED lamp full power is entirely bright; In the time not sensing human body, the grounding leg of this circuit and control pin cut-off, in major loop, electric current continues to flow by sample resistance.But sample resistance resistance is larger, and central control circuit samples high voltage, can make driving power by the 15%-30% output of full power, LED lamp is micro-to go out.
Referring to Fig. 3, in preferred embodiment, described electronic switch branch road comprises the first and second electronic switch branch roads.The control pin of described line interface connects the fixed contact (1) of a selector switch K, between a moving contact of selector switch (2) and ground, be connected in series the first electronic switch branch road, between another moving contact of selector switch (3) and ground, be connected in series the second electronic switch branch road, selector switch is selected a gating first or second electronic switch branch road; The first and second electronic switch branch roads are welded on same circuit board, select the first or second electronic switch branch road according to the selector switch of need to stirring of field of employment.Selector switch is selected the first or second electronic switch branch road, and it is different from the connected mode of LED lamp.As selector switch K has selected the first electronic switch branch road, as shown in Figure 4, control pin is by the splicing ear outlet LED lamp plate negative pole that is of coupled connections, grounding leg ground connection in its external cabling; As selector switch K has selected the second electronic switch branch road, as shown in Figure 5, control pin is coupling-connected to power supply sample resistance one end by splicing ear outlet in its external cabling, and grounding leg ground connection, is equivalent to shunt resistance to be parallel to sample resistance two ends.Referring to Fig. 8, the first electronic switch branch road comprises the 11 resistance R 11 and the metal-oxide-semiconductor Q1 of series connection, the grid of the metal-oxide-semiconductor described infrared induction module that is of coupled connections; The second electronic switch branch road comprises the tenth resistance R 10, shunt resistance and the output control ICQ2 of series connection, and the control end of the IC described infrared induction module that is of coupled connections is controlled in output, and described shunt resistance comprises the 8th resistance R 8 and the 9th resistance R 9 in parallel.
Referring to 6,7,8, in preferred embodiment, voltage reduction module comprises: order is serially connected in the 20 resistance R 20, the first resistance R 1, the first capacitor C 1 between line interface supply pin and ground, the first electric capacity two ends also meet voltage stabilizing didoe D1, and voltage stabilizing didoe plus earth, negative electrode connect described Voltage stabilizing module.R20 and R1 play the effect of step-down, and C1 and D1 play the effect of filtering and voltage stabilizing, adjust the resistance of R20 and R1, can adapt to wider input voltage range, and DC voltage 8-300V can use.
Referring to 6,7,8, in preferred embodiment, Voltage stabilizing module has voltage stabilizing chip U2, voltage stabilizing chip input VIN connects described voltage stabilizing didoe D1 negative electrode, voltage stabilizing chip output VOUT connects the second capacitor C 2, second resistance R 2 one end, the second electric capacity other end ground connection, one end of another termination of the second resistance the 3rd capacitor C 3 and the 4th capacitor C 4, is connected the power end of described infrared induction module and sends stabilized voltage power supply, the other end ground connection of the 3rd electric capacity and the 4th electric capacity.The model of U2 can adopt HT7533, and C2, R2, C3, C4 play output filtering pressure stabilization function.
Referring to 6, 7, 8, in preferred embodiment, infrared induction module has infrared induction chip U1, adjustable side time of delay (TIME end) of infrared induction chip connects the 5th capacitor C 5, the 3rd resistance R 3, one end of the 4th resistance R 4, the other end ground connection of the 5th electric capacity and the 4th resistance, stabilized voltage power supply described in another termination of the 3rd resistance, the photoinduction end (ONE end) of infrared induction chip connects the 6th capacitor C 6, the 5th resistance R 5, one end of the 6th resistance R 6, stabilized voltage power supply described in another termination of the 5th resistance, the other end ground connection of the 6th electric capacity, the other end of the 6th resistance is by photodiode (CDS) ground connection, the output control terminal of infrared induction chip by the 7th resistance R 7 connect described metal-oxide-semiconductor Q1 grid and output control IC(Q2) control end (OUT).The model of U1 can adopt AM622, its control end output LOW voltage in the time not sensing human body, the required signal of infrared sensor window mouthfeel of U1 in the time sensing human body, causes chip U1 internal actions, its control end output HIGH voltage, to control the first or second electronic switch branch road action.CDS is photoinduction device, and CDS change in resistance while sensing brightness causes chip U1 internal actions, and its control end output LOW voltage, to control the first or second electronic switch branch road action.
Above embodiment is only for illustrating, non-providing constraints.Anyly do not depart from the application's spirit and category, and equivalent modifications or change that it is carried out all should be contained among the application's claim scope.
Claims (7)
1. an infrared induction circuit, it is characterized in that, there is line interface, line interface comprises supply pin, grounding leg and control pin, supply pin is connected the power end of infrared induction module with Voltage stabilizing module by the voltage reduction module of series connection, connecting electronic switching branches between described control pin and ground, infrared induction module connecting electronic switching branches is also controlled its break-make.
2. infrared induction circuit as claimed in claim 1, it is characterized in that, described electronic switch branch road is the first electronic switch branch road, and it comprises the 11 resistance (R11) and the metal-oxide-semiconductor (Q1) of series connection, the grid of the metal-oxide-semiconductor described infrared induction module that is of coupled connections.
3. infrared induction circuit as claimed in claim 1, it is characterized in that, described electronic switch branch road is the second electronic switch branch road, it comprises the tenth resistance (R10), shunt resistance and the output control IC(Q2 of series connection), the control end of the IC described infrared induction module that is of coupled connections is controlled in output, and described shunt resistance comprises the 8th resistance (R8) and the 9th resistance (R9) in parallel.
4. infrared induction circuit as claimed in claim 1, it is characterized in that, described electronic switch branch road comprises the first and second electronic switch branch roads, the control pin of described line interface connects the fixed contact of a selector switch (K), between moving contact of selector switch and ground, be connected in series the first electronic switch branch road, between another moving contact of selector switch and ground, be connected in series the second electronic switch branch road, selector switch is selected a gating first or second electronic switch branch road; Wherein
The first electronic switch branch road comprises the 11 resistance (R11) and the metal-oxide-semiconductor (Q1) of series connection, the grid of the metal-oxide-semiconductor described infrared induction module that is of coupled connections;
The second electronic switch branch road comprises the tenth resistance (R10), shunt resistance and the output control IC(Q2 of series connection), the control end of the IC described infrared induction module that is of coupled connections is controlled in output, and described shunt resistance comprises the 8th resistance (R8) and the 9th resistance (R9) in parallel.
5. infrared induction circuit as claimed in claim 4, it is characterized in that, described voltage reduction module comprises: order is serially connected in the 20 resistance (R20), the first resistance (R1), the first electric capacity (C1) between line interface supply pin and ground, the first electric capacity two ends also connect voltage stabilizing didoe (D1), and voltage stabilizing didoe plus earth, negative electrode connect described Voltage stabilizing module.
6. infrared induction circuit as claimed in claim 5, it is characterized in that, described Voltage stabilizing module has voltage stabilizing chip (U2), voltage stabilizing didoe (D1) negative electrode described in voltage stabilizing chip input termination, voltage stabilizing chip output connects the second electric capacity (C2), the second resistance (R2) one end, the second electric capacity other end ground connection, one end of another termination of the second resistance the 3rd electric capacity (C3) and the 4th electric capacity (C4), be connected the power end of described infrared induction module and send stabilized voltage power supply, the other end ground connection of the 3rd electric capacity and the 4th electric capacity.
7. infrared induction circuit as claimed in claim 6, it is characterized in that, described infrared induction module has infrared induction chip (U1), adjustable side time of delay of infrared induction chip connects the 5th electric capacity (C5), the 3rd resistance (R3), one end of the 4th resistance (R4), the other end ground connection of the 5th electric capacity and the 4th resistance, stabilized voltage power supply described in another termination of the 3rd resistance, photoinduction termination the 6th electric capacity (C6) of infrared induction chip, the 5th resistance (R5), one end of the 6th resistance (R6), stabilized voltage power supply described in another termination of the 5th resistance, the other end ground connection of the 6th electric capacity, the other end of the 6th resistance is by photodiode ground connection, the output control terminal of infrared induction chip by the 7th resistance (R7) connect described metal-oxide-semiconductor (Q1) grid and output control IC(Q2) control end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420012873.XU CN203708578U (en) | 2014-01-09 | 2014-01-09 | Infrared inductive circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420012873.XU CN203708578U (en) | 2014-01-09 | 2014-01-09 | Infrared inductive circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203708578U true CN203708578U (en) | 2014-07-09 |
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ID=51058953
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420012873.XU Expired - Fee Related CN203708578U (en) | 2014-01-09 | 2014-01-09 | Infrared inductive circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203708578U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105792466A (en) * | 2014-12-24 | 2016-07-20 | 比亚迪股份有限公司 | Infrared induction drive control circuit and lighting control circuit |
| CN106226835A (en) * | 2016-03-01 | 2016-12-14 | 四川行之智汇知识产权运营有限公司 | Human inductor |
-
2014
- 2014-01-09 CN CN201420012873.XU patent/CN203708578U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105792466A (en) * | 2014-12-24 | 2016-07-20 | 比亚迪股份有限公司 | Infrared induction drive control circuit and lighting control circuit |
| CN105792466B (en) * | 2014-12-24 | 2019-02-26 | 比亚迪股份有限公司 | Infrared induction drive control circuit and illumination control circuit |
| CN106226835A (en) * | 2016-03-01 | 2016-12-14 | 四川行之智汇知识产权运营有限公司 | Human inductor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140709 Termination date: 20170109 |