CN100542033C - Control circuit and method that a kind of inductive light intensity changes - Google Patents
Control circuit and method that a kind of inductive light intensity changes Download PDFInfo
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- CN100542033C CN100542033C CNB200710073923XA CN200710073923A CN100542033C CN 100542033 C CN100542033 C CN 100542033C CN B200710073923X A CNB200710073923X A CN B200710073923XA CN 200710073923 A CN200710073923 A CN 200710073923A CN 100542033 C CN100542033 C CN 100542033C
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Abstract
The invention discloses the control circuit that a kind of inductive light intensity changes, comprise at least: an active illuminating body and a brightness impression device all connect an APU and accept the control of this APU; Described APU is used to control described active illuminating body and changes luminously according to predetermined rule, and monitors this brightness with predetermined rule that described brightness impression device senses and changes, to produce corresponding control signal; Described APU also connects control one and carries out components and parts, is used for according to the control action of described control signal execution to controlled device.Control circuit of the present invention and method are owing to adopted one can carry out the active illuminating body component that brightness changes by predetermined rule, as detectable signal having been carried out predetermined modulation, computing in conjunction with brightness impression device and APU is judged, in the environment of various light, realized accurately, responded to reliably, easily control procedure.
Description
Technical field
The present invention relates to a kind of inductive control circuit and method, control circuit and method that in particular a kind of inductive light intensity changes, be used for inspected object near to or in contact with the time brightness change and control.
Background technology
In the control switch circuit of prior art, common inductive switch control device mainly contains magnetic inductive, capacitor induction type, infrared reflection and microwave induced formula or the like.More than various control circuit device certain defective is all arranged, be subjected to the interference of magnetic material, metal material bigger as induction; Capacitor induction type then is subjected to the influence of air humidity, electric conducting material easily; The infrared emission formula then is subjected to the interference of other infrared-ray easily; Microwave induced formula then is subjected to the interference of the microwave of adjacent frequency easily.
More than various induction type control circuit device, if as human body near to or in contact with control device when using will make control circuit produce mistake to control owing to be interfered; And rayless the time, can not discern their position very easily, and need add a luminous element such as emitting ledly come indicating positions, use inconvenient.
Therefore, prior art has yet to be improved and developed.
Summary of the invention
The control circuit and the method that the object of the present invention is to provide a kind of inductive light intensity to change, can change luminous active illuminating body according to certain rules by being provided with, and corresponding brightness impression device and APU, can get rid of the interference of various conditions, in the complex conditions of various light environments, can realize convenience, reliable detection, get rid of and disturb, improve the accuracy of induction control.，
In order to reach above-mentioned purpose, technical scheme of the present invention comprises:
The control circuit that a kind of inductive light intensity changes wherein, comprises at least: an active illuminating body and a brightness impression device all connect an APU and accept the control of this APU;
Described brightness impression device is used for responding in the precalculated position luminosity variation of described active illuminating body, and induced signal is sent to described APU;
Described APU is used for controlling described active illuminating body by transmission control wave mode and changes luminous according to predetermined rule, and monitor this brightness with predetermined rule that described brightness impression device senses and change and compare judgement, to produce corresponding control signal;
Described APU also comprises an analog-to-digital conversion module, is used for the analog signal that described brightness impression device is sensed is changed;
Described APU also connects control one and carries out components and parts, and described execution components and parts are used for sending the on/off control of constant high or low level execution to controlled device according to described APU control; Perhaps,
Being used for sending the pulse-width signal execution according to described APU control regulates the grade of controlled device.
Described control circuit, wherein, described APU also comprises an analog-to-digital conversion module, is used for the analog signal that described brightness impression device is sensed is changed.
Described control circuit, wherein, described brightness impression device is a photodiode, photo resistance or a phototriode.
Described control circuit, wherein, described brightness impression device is provided with near described active illuminating body.
Described control circuit, wherein, described execution components and parts are set to MOS transistor, controllable silicon, triode, relay, contactor or electromagnetically operated valve.
The control method that a kind of inductive light intensity changes, it may further comprise the steps:
A, send control waveform to an active illuminating body by predetermined rule, control the light-emitting mode of described active illuminating body by an APU;
B, a brightness impression device is set responds to the luminosity of described active illuminating body in the precalculated position and change, and induced signal is sent to described APU compare judgement;
When the brightness with predetermined rule that C, described APU are sensed at definite described brightness impression device changes, produce predetermined control signal;
After D, described control signal send to execution components and parts, be used to control controlled device and carry out certain control action.
Described control method wherein, also comprises in the described steps A:
Described APU is controlled described active illuminating body with predetermined rule flicker by rectangular wave.
Described control method, wherein, described step D also comprises:
Described APU control is sent constant high or low level and is used to control described execution components and parts, to realize the on/off control to controlled device.
Described control method, wherein, described step D also comprises:
Pulse-width signal (pwm signal) is sent in described APU control, is used to control described execution components and parts, to realize the grade adjusting to controlled device.
Control circuit and method that a kind of inductive light intensity provided by the present invention changes, owing to adopted one can carry out the active illuminating body component that brightness changes by predetermined rule, as detectable signal having been carried out predetermined modulation, computing in conjunction with brightness impression device and APU is judged, in the environment of various light, realized accurately, responded to reliably, easily control procedure.
Description of drawings
Below in conjunction with a preferred embodiment and accompanying drawing the present invention is described in detail below, wherein accompanying drawing comprises:
Fig. 1 is the control circuit of inductive light intensity variation of the present invention and the circuit theory diagrams of method;
Fig. 2 is the control circuit of inductive light intensity variation of the present invention and the drive waveforms figure that the APU in the method is exported to the active illuminating body;
Fig. 3 be the control circuit that changes of inductive light intensity of the present invention with a preferred embodiment of method in the control signal schematic diagram exported of APU;
Fig. 4 be the control circuit that changes of inductive light intensity of the present invention with another preferred embodiment of method in the control signal schematic diagram exported of APU.
Embodiment
Below will be described in more detail each preferred embodiment of the present invention.
In the control circuit that inductive light intensity of the present invention changes, as shown in Figure 1, comprising: an active illuminating body component 110, one brightness impression devices 120, one APUs 130, are carried out components and parts 140.Wherein, described APU 130 is used for connecting the control entire circuit, can change with predetermined rule to described active illuminating body 110 and send control impuls, as shown in Figure 2, be provided with simultaneously described brightness impression device 120 the bottom of described active illuminating body or near the position so that stronger induced signal is arranged.
Described brightness impression device 120 can its installation site of perception brightness change, carrying out computing by described APU 130 judges, filtering does not have to change according to the brightness that predetermined rule changes, for example when shining with torch, the luminous of torch is constant, therefore, the brightness variation with predetermined rule variation that described brightness impression device 120 is sensed is monitored, just can abandon the interference of other light.
When monitoring, APU 130 of the present invention has brightness that rule changes when variation has taken place on the described brightness impression setting position 120, as shown in Figure 1, as human body or object near to or in contact with control device of the present invention, as the soft-touch control of setting, or, the perception field of setting, this can be provided with different induction ranges according to of the present invention the adjustment in advance.During near to or in contact with induction range of the present invention, cause the light reflection of active illuminating body as human body or object, cause the change on the described brightness impression device with the brightness value that changes according to predetermined rule.
Active illuminating body 110 of the present invention will be operated under the drive pulse signal control of described APU in the device course of work always, and its predetermined rule changes by described APU control.
Active illuminating body of the present invention is to cause the light source that its surrounding brightness changes at object near producing the light reflection behind the induction region, the position indicative function of device in the time of playing dull thread again, make apparatus of the present invention during near (or contact) control device, install and use very convenient as human body.
The brightness that brightness impression device 120 of the present invention is responded to around the described active illuminating body always changes, input to APU after changing light characteristic into the signal of telecommunication, being provided with an A/D D/A converter module 131 in the APU 130 can be to the analog signal of this variation, carry out A/D (mould/number) conversion, be converted to digital quantity, be used for computing and judge.
In addition, also be provided with a brightness default value in the described APU, APU of the present invention can change the brightness default value according to the variation of active illuminating body context brightness, purpose is that the overall brightness that filters out because of luminous element context light changes the variable signal that causes, for example daytime and night is different, because be that stable brightness changes, can not influence the brightness variation that described active illuminating body of the present invention sends according to predetermined rule variation.
Described APU is only when coming close to or in contact with luminous element because of staff or other object, because light reflection, brightness around the active illuminating body that can cause changes, it is to have reflected to have the light signal that predetermined rule changes that this brightness changes, therefore APU can respond to this brightness signal of telecommunication that described brightness impression device is sensed, allow this variable signal value compare with the brightness default value, if the variable signal value exceeds default value, described APU will be exported a control signal and give the execution components and parts, carry out components and parts and controlled device is carried out various control actions according to control signal, these controlled devices can be circuit or the system that links to each other with apparatus of the present invention, for example lighting device or miscellaneous equipment.Apparatus of the present invention can be carried out on/off control to lighting device or the miscellaneous equipment that connects, or gradual change is regulated control as light modulation, speed governing or the like.
In the control circuit and method that inductive light intensity of the present invention changes, because object (comprising human body) is when the active illuminating body, because the light emission of object can cause the brightness around the active illuminating body and change, and this brightness changes with only changing according to same predetermined rule of sending of active illuminating body, for example flicker, bright dark variation etc., the brightness that causes for other surround lighting changes because basicly stable, circuit of the present invention can filter and exclude, thereby not disturbed by it.For the physical features of other variation, as temperature, humidity, electromagnetic wave, magnetic field or the like can not respond fully, so circuit of the present invention and method use are very reliable, accurate.
In the control circuit and method that inductive light intensity of the present invention changes, drive signal to described active illuminating body is the pulse signal of being exported by described APU that changes according to certain rules, the flicker frequency that this pulse signal is controlled described active illuminating body is higher than the frequency that human eye can be perceiveed, and just can not feel to glimmer like this when the people watches the active illuminating body to feel bad.
But can sense the light of active illuminating body at the brightness impression device of installing very close to described active illuminating body, and change the light of this flicker into pulse electrical signal, input to described APU by the certain frequency flicker.When staff or other object during near the active illuminating body, reason owing to the light reflection, the brightness meeting of the light that this flicker changes around the described active illuminating body is strengthened, be that the brightness meeting is brighter, then the amplitude of the pulse electrical signal of brightness impression device transformation output can increase, after described APU carries out calculation process to the signal of this variation, compare with setting value in it, in exceeding during setting value, APU can be exported a control signal and give the execution components and parts, carries out components and parts are carried out response again according to the control signal pair equipment that is connected with device control action, for example on/off control, light modulation, speed regulating control etc.Otherwise APU just can not exported control signal, carries out components and parts and does not carry out any operation.
In control circuit and method that inductive light intensity of the present invention changes, in one embodiment, the active illuminating body can be light-emitting diode (LED), incandescent lamp or fluorescent lamp or the like various luminous objects; Described brightness impression device can be various light-sensitive devices, as photodiode, photo resistance, phototriode or the like.Described APU can be various APUs or systems such as the microprocessor (MCU) changed of band A/D (mould/number), DSP, PC.Described execution components and parts can be MOS transistor, controllable silicon, triode, relay, contactor or electromagnetically operated valve or the like control action device and parts.
As shown in Figure 1, in this embodiment of the present invention, as the active illuminating body, use photodiode as the brightness impression device with LED (light-emitting diode), as APU, use power MOSFET with the MCU that is with A/D (D/A) conversion as carrying out components and parts.
Circuit of the present invention is in when work, works under the control of the drive signal of microprocessor (MCU) output as the LED of active illuminating body always, and drive signal can adopt as shown in Figure 2, is a pulse signal that changes by predetermined rule.In this active illuminating body bottom or very close to around the active illuminating body brightness impression device being installed is photodiode, respond to the luminance signal around the described active illuminating body, and changing luminance signal into the signal of telecommunication, to input to APU be microprocessor (MCU) always; APU is that microprocessor (MCU) carries out A/D (D/A) conversion to the signal of telecommunication of input always, and the numerical value after always will changing and built-in brightness default value compare.
The built-in brightness default value of this microprocessor (MCU) must be appropriately reasonable, guarantee when not having object close, the luminance signal numerical value that the brightness impression device is sensed can not exceed the built-in brightness default value of microprocessor (MCU), and microprocessor (MCU) can not exported control signal and give the execution components and parts.And when the close luminous element of object, the light reflection appears, cause that the luminance signal numerical value that the brightness impression device is sensed can exceed the built-in brightness default value of microprocessor (MCU) when the refractive body surrounding brightness changed, microprocessor (MCU) can the output control signal be given the execution components and parts.
Control signal in microprocessor described in the specific embodiment of the invention (MCU) output can be a constant high level or low level signal, as shown in Figure 3, break-make that so just can power controlling MOSFET, also promptly controlled the on/off of LED lamp group, realized on-off switch control LED lamp group.Microprocessor (MCU) also can be exported a pulse-width signal (being pwm signal) and give power MOSFET, as shown in Figure 4, so just can realize the brightness of LED lamp group is regulated, and realizes the control of light modulation.
Need to prove that in the above-mentioned explanation at specific embodiment, what controlled device of the present invention adopted is LED lamp group, but be not limited to LED lamp group, miscellaneous equipment can also be arranged,, can realize induction control by control circuit of the present invention and method as motor, air conditioner or the like.
Though the present invention discloses as above with preferred embodiment; but be not in order to limiting protection scope of the present invention, anyly be familiar with this operator, in spirit and scope of the invention; change and retouching when doing to be equal to all should fall in the protection range of claims of the present invention.
Claims (8)
1, the control circuit that changes of a kind of inductive light intensity is characterized in that, comprises at least: an active illuminating body and a brightness impression device all connect an APU and accept the control of this APU;
Described brightness impression device is used for responding in the precalculated position luminosity variation of described active illuminating body, and induced signal is sent to described APU;
Described APU, being used for controlling described active illuminating body by transmission control wave mode changes luminous according to predetermined rule, and monitor this brightness with predetermined rule that described brightness impression device senses and change and compare judgement, to produce corresponding control signal;
Described APU also comprises an analog-to-digital conversion module, is used for the analog signal that described brightness impression device is sensed is changed;
Described APU also connects control one and carries out components and parts, and described execution components and parts are used for sending the on/off control of constant high or low level execution to controlled device according to described APU control; Perhaps,
Being used for sending the pulse-width signal execution according to described APU control regulates the grade of controlled device.
2, control circuit according to claim 1 is characterized in that, described brightness impression device is a photodiode, a photo resistance or a phototriode.
3, control circuit according to claim 2 is characterized in that, described brightness impression device is provided with near described active illuminating body.
4, control circuit according to claim 1 is characterized in that, described execution components and parts are set to MOS transistor, controllable silicon, triode, relay, contactor or electromagnetically operated valve.
5, a kind of control method of inductive light intensity variation, it may further comprise the steps:
A, send control waveform to an active illuminating body by predetermined rule, control the light-emitting mode of described active illuminating body by an APU;
B, a brightness impression device is set responds to the luminosity of described active illuminating body in the precalculated position and change, and induced signal is sent to described APU compare judgement;
When the brightness with predetermined rule that C, described APU are sensed at definite described brightness impression device changes, produce predetermined control signal;
After D, described control signal send to execution components and parts, be used to control controlled device and carry out certain control action.
6, control method according to claim 5 is characterized in that, also comprises in the described steps A:
Described APU is controlled described active illuminating body with predetermined rule flicker by rectangular wave.
7, control method according to claim 6 is characterized in that, described step D also comprises:
Described APU control is sent constant high or low level and is used to control described execution components and parts, to realize the on/off control to controlled device.
8, control method according to claim 6 is characterized in that, described step D also comprises:
Pulse-width signal (pwm signal) is sent in described APU control, is used to control described execution components and parts, to realize the grade adjusting to controlled device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CNB200710073923XA CN100542033C (en) | 2007-04-05 | 2007-04-05 | Control circuit and method that a kind of inductive light intensity changes |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200710073923XA CN100542033C (en) | 2007-04-05 | 2007-04-05 | Control circuit and method that a kind of inductive light intensity changes |
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| Publication Number | Publication Date |
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| CN101039114A CN101039114A (en) | 2007-09-19 |
| CN100542033C true CN100542033C (en) | 2009-09-16 |
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| CNB200710073923XA Expired - Fee Related CN100542033C (en) | 2007-04-05 | 2007-04-05 | Control circuit and method that a kind of inductive light intensity changes |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108684101A (en) * | 2018-04-03 | 2018-10-19 | 重庆彤芯微集成电路有限公司 | A kind of intelligent illuminating system and method |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101965091B (en) * | 2009-07-24 | 2013-08-14 | 海洋王照明科技股份有限公司 | Locomotive assisted illuminating lamp |
| CN109150151A (en) * | 2017-06-28 | 2019-01-04 | 美的智慧家居科技有限公司 | Inductive switch |
| CN109308011A (en) * | 2017-07-26 | 2019-02-05 | 美的智慧家居科技有限公司 | The distribution method, apparatus and smart home device of smart home device |
| CN107898235A (en) * | 2017-12-25 | 2018-04-13 | 广东金石卖场建设有限公司 | A kind of Mobile phone show shelf with human body induction function |
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2007
- 2007-04-05 CN CNB200710073923XA patent/CN100542033C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108684101A (en) * | 2018-04-03 | 2018-10-19 | 重庆彤芯微集成电路有限公司 | A kind of intelligent illuminating system and method |
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| CN101039114A (en) | 2007-09-19 |
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Effective date of registration: 20190411 Address after: 518000 Third Floor, Building B2, Jiaan Industrial Park, 72 District, Baoan District, Shenzhen City, Guangdong Province Patentee after: Shenzhen Shengrui Technology Co., Ltd. Address before: 518053 Room 1304, Block B, Haoyuan B, Baishizhou Overseas Chinese Town, Nanshan District, Shenzhen City, Guangdong Province Patentee before: Gong Fei |
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