CN101592923B - Automatic induction system and method - Google Patents
Automatic induction system and method Download PDFInfo
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- CN101592923B CN101592923B CN2009100541980A CN200910054198A CN101592923B CN 101592923 B CN101592923 B CN 101592923B CN 2009100541980 A CN2009100541980 A CN 2009100541980A CN 200910054198 A CN200910054198 A CN 200910054198A CN 101592923 B CN101592923 B CN 101592923B
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Abstract
The invention discloses an automatic induction system and a method thereof applied to kitchens or lavatories. The automatic induction system comprises an ambient light inductor for detecting ambient light intensity on peripheries of equipment in the kitchens or the lavatories, and a controller for controlling the equipment in the kitchen or the lavatories to execute corresponding actions, wherein the automatic induction system also comprises a power frequency light interference resisting unit for ensuring accurate detection of the ambient light intensity. Therefore, the automatic induction system can realize low power consumption, and more accurate and reliable detection.
Description
[technical field]
The present invention relates to a kind of automatic induction system and method, relate in particular to the automatic induction system and the method that are used to control other equipment in automatic faucet or kitchen, the lavatory.
[background technology]
In the prior art, the inductor that is applied to other equipment (as urinal, w.c.pan etc.) in automatic faucet and kitchen or the lavatory of controlling is generally the infrared induction sensor.The traditional infrared induction pick-up comprises infrared transmitter and infrared remote receiver.Wherein, infrared transmitter be with regular time do not stop at interval send infrared ray to induction region, sent once in for example per 0.3 second.And described infrared remote receiver receives the infrared signal of returning.According to being carried out power, the intensity of the infrared signal that receives detects, judge that equipment has or not the user in kitchen or the lavatory, thereby control kitchen or lavatory equipment are carried out corresponding action, for example control the bath of the water outlet of automatic faucet or sealing, control urinal etc.Specifically, on water swivel example with the infrared induction sensor application.When the infrared inductor judgement had the user to enter induction region, the control water swivel was opened valve and water outlet; When judging that the user leaves induction region, control the water swivel valve-off and sealing.And for example, on urinal example with the infrared induction sensor application.When the infrared inductor judgement had the people to use, control urinal outlet valve was opened and is carried out preceding bath; And after judging no user (being that the user leaves), control urinal outlet valve is opened once more and is carried out backlash.According to foregoing description, realized that by the infrared induction sensor water swivel and lavatory bath device works automatically.This is the industry general technology of employing of institute at present.
Because traditional infrared induction water swivel all is to adopt powered by direct current, how to save the electric energy that infrared inductor consumes, prolong battery serviceable life, become industry institute question of common concern.In order to realize the purpose of low-power consumption, people improve for the induction mode of traditional infrared induction sensor.Under normal condition, infrared inductor is responded to lower transmission frequency emission infrared ray.In case when judging when having the user to use kitchen or lavatory in relevant device the ultrared frequency quickening of infrared induction sensor emission.Yet it is very limited that the effect of saving power consumption on the one hand is set like this, can reduce the comfort level of use on the other hand, when for example being applied on the automatic faucet, after the user is put into induction region at the beginning, may the long period just understand water outlet.
Even if in continuous exploration, but traditional infrared induction sensor no matter be which kind of frequency to launch infrared ray with, all needs continual work to people to the low-power consumption implementation method of infrared inductor.Therefore, the energy of infrared induction sensor consumption is very considerable.For general occasion, the automatic induction tap of frequency of utilization lower (using every day 50 times) for example, it sends energy that infrared light consumed will be above 30% of total power consumption.
Simultaneously, also occurred novel inductors such as microwave Doppler inductor, ultrasonic sensing device are applied in kitchen or the lavatory in the prior art in recent years.Compare traditional infrared inductor, this class inductor can not be subjected to all multiple constraints of environment.But the need of work of these inductors consumes more electric energy, even needs to use alternating current could guarantee its routine work.
No matter adopt which kind of inductor and which kind of mode, the problem that power consumption can't reduce is perplexing us all the time.In the today of advocating energy-conserving and environment-protective, people are especially constantly exploring and research, in the hope of developing the good and more energy-conservation automatic induction system of a kind of inductive effects.
[content]
The object of the present invention is to provide a kind of low-power consumption, detect accurate automatic induction system and method thereof.
Purpose of the present invention is achieved through the following technical solutions: a kind of automatic induction system, be applied in kitchen or the lavatory, described automatic induction system comprises: detect the environment light sensor of kitchen or lavatory equipment surrounding environment light intensity and the controller of control kitchen or lavatory equipment execution corresponding actions.Wherein, automatic induction system comprises that also the assurance ambient light intensity detects anti-accurately power frequency light interference units.
Further, automatic induction system also comprise detect kitchen or lavatory equipment whether the someone use near inductor, start according to the variable quantity of ambient light intensity and detect near inductor.
Further, automatic induction system also comprise detect kitchen or lavatory equipment whether the someone use near inductor, describedly start according to the variable quantity of ambient light intensity value and ambient light intensity and detect near inductor.
Further, described is infrared inductor near inductor, comprises to induction region launching the infrared receiver that infrared signal is returned in ultrared infrared emission unit and reception.
Further, environment light sensor is a light sensor.
Further, light sensor is passive photodiode.
Purpose of the present invention is achieved through the following technical solutions: a kind of automatic induction method, in order to control kitchen or lavatory relevant device, comprise the steps: timing sampling surround lighting and computing environment light intensity, wherein in timing sampling surround lighting and the computing environment light intensity step, comprise that also anti-power frequency light disturbs step.Whether greater than default limit value, and judged whether that the user uses kitchen or lavatory relevant device according to the variable quantity of ambient light intensity.
Further, described anti-power frequency light disturbs step to comprise: step 1: earlier T/2 in the cycle with uniform time interval sampling N secondary environment light intensity.Step 2, the relative undulate quantity Δ V of the ambient light intensity that calculating collects.Does step 3 judge that described relative undulate quantity Δ V is less than default definite value W? as be judged as and be, judge that no power frequency light disturbs, and enters step 4; As be judged as not, judging has power frequency light to disturb, and enters step 5.Step 4 is exported as ambient light intensity with the mean value of above-mentioned N sampling.Step 5 with the same interval N secondary environment light intensity of sampling again, is exported as ambient light intensity with the mean value of 2N sampling.
Further, N equals 5.
Further, undulate quantity Δ V equals (Vmax-Vmin)/((Vmax+Vmin)/2) relatively, and described Vmax value and Vmin value are respectively the minimum and maximum value of voltage of ambient light intensity in the T/2 cycle.
Further, this W value is 3%.
Further, when the variable quantity of ambient light intensity greater than default limit value, open near inductor, judged whether that the user uses kitchen or lavatory relevant device.
Further, described is infrared inductor near inductor, comprises to induction region launching the infrared receiver that infrared signal is returned in ultrared infrared emission unit and reception.
Purpose of the present invention is by following technical solution: a kind of automatic induction method, in order to control kitchen or lavatory relevant device, comprise the steps: timing sampling surround lighting and computing environment light intensity, wherein in timing sampling surround lighting and the computing environment light intensity step, comprise that also anti-power frequency light disturbs step.The variable quantity that is positioned at default compare threshold interval and ambient light intensity when the ambient light intensity value is greater than default limit value, and judged whether that the user uses kitchen or lavatory relevant device.
Further, described anti-power frequency light disturbs step to comprise: step 1: earlier T/2 in the cycle with uniform time interval sampling N secondary environment light intensity.Step 2, the relative undulate quantity Δ V of the ambient light intensity that calculating collects.Does step 3 judge that described relative undulate quantity Δ V is less than default definite value W? as be judged as and be, judge that no power frequency light disturbs, and enters step 4; As be judged as not, judging has power frequency light to disturb, and enters step 5.Step 4 is exported as ambient light intensity with the mean value of above-mentioned N sampling.Step 5 with the same interval N secondary environment light intensity of sampling again, is exported as ambient light intensity with the mean value of 2N sampling.
Further, N equals 5.
Further, Δ V equals (Vmax-Vmin)/((Vmax+Vmin)/2), and described Vmax value and Vmin value are respectively the minimum and maximum value of voltage of ambient light intensity in the T/2 cycle.
Further, the W value is 3%.
Further, the variable quantity that is positioned at default compare threshold interval and ambient light intensity when the ambient light intensity value is opened near inductor greater than default limit value, has judged whether that the user uses kitchen or lavatory relevant device.
Further, described is infrared inductor near inductor, comprises to induction region launching the infrared receiver that infrared signal is returned in ultrared infrared emission unit and reception.
Compared with prior art, the environment light sensor by passive or low-power consumption comes the intensity level of ambient light and the variable quantity of ambient light intensity value, further controls kitchen and lavatory equipment and carries out corresponding action.Be provided with like this, can realize low-power consumption.Simultaneously, it is accurate more, reliable to utilize anti-power frequency light interference units to make that surround lighting detects.
[description of drawings]
Fig. 1 is the structured flowchart of automatic induction system of the present invention.
Fig. 2 is an automatic induction system partial circuit synoptic diagram of the present invention.
Fig. 3 is a preferred implementation schematic flow sheet of automatic induction method of the present invention.
Fig. 4 is another preferred implementation schematic flow sheet of automatic induction method of the present invention.
Fig. 5 is another preferred implementation schematic flow sheet of automatic induction method of the present invention.
Fig. 6 is another preferred implementation schematic flow sheet of automatic induction method of the present invention.
Fig. 7 a is under the situation of unglazed interference, the ambient light intensity value synoptic diagram that collects.
Fig. 7 b is under the situation that has light to disturb, the ambient light intensity value synoptic diagram that collects.
Fig. 8 is the schematic flow sheet of anti-power frequency light interference method in the automatic induction method of the present invention.
[embodiment]
As shown in Figure 1, automatic induction system 100 of the present invention is applied in automatic faucet or kitchen, the lavatory on other relevant devices, as urinal, w.c.pan etc.In the embodiment as shown in Figure 1, automatic induction system 100 of the present invention comprises environment light sensor 1, infrared inductor 2 and controller 3.Wherein said environment light sensor 1 detects the variation of the ambient light intensity around the relevant device 4 in kitchen, the lavatory, and testing result is exported to controller 3.Controller 3 judges according to information such as environment light intensity and variable quantities whether decision starts infrared inductor 2 work or enter duty from dormant state.After infrared inductor 2 was activated, whether infrared inductor 2 emission infrared light detection had object (as human body or staff etc.) to enter induction region.Infrared inductor 2 is exported to controller 3 with detected result.3 pairs of these infrared external reflection signals of controller are handled, and decision is action further, for example control in the opening the valve water outlet, close valve seal or kitchen of water swivel, the lavatory other equipment execution corresponding action etc.
Wherein, environment light sensor 1 is the light sensor that is used for ambient light, can be photodiode, phototriode or photoresistance etc.In the present invention one preferred embodiment, this environment light sensor 1 adopts photodiode.Because photodiode is a kind of semiconductor devices that transform light energy can be become electric energy, generally as silicon photocell.Photodiode is a kind of passive sensing device, itself is not catabiotic, is commonly referred to as passive photodiode.Therefore, compare phototriode or photoresistance etc., adopt photodiode, can realize Zero-energy consumption as environment light sensor.Really, under the situation of conditions permit, for example battery capacity is enough big etc., and environment light sensor 1 also can adopt light sensors such as phototriode or photoresistance.
Described infrared inductor 2 comprises infrared light transmitter unit and infrared light receiving element.Described infrared light transmitter unit is generally light emitting diode, to induction region emission infrared ray; And described infrared light transmitter unit receives from induction region and returns the infrared external reflection signal of returning, and this infrared external reflection signal is exported to controller 3 handle.
Described controller 3 is connected with the topworks of environment light sensor 1, infrared inductor 2 and kitchen, lavatory relevant device 4, in order to process information and control corresponding topworks and carry out corresponding actions.
Under the unmanned state that uses, described environment light sensor 1 is sensed ambient light intensity to be constant or slowly to change, therefore, this moment infrared inductor 2 can not work or with the long time interval (as: 2 seconds) to induction region emission infrared ray.Here reach in the following description, send infrared ray with the long time interval and can be called dormant state.Under dormant state, infrared inductor 2 also is work.
When the approaching described kitchen of user, lavatory relevant device 4, described environment light sensor 1 is sensed this relevant device 4 surrounding environment light intensities and is produced sudden change.Environment light sensor 1 is passed to controller 3 with the jump signal that detects.
3 pairs of jump signals that receive of controller are handled, and it is pre-conditioned whether the variable quantity of judging ambient light intensity satisfies, as whether the variable quantity of judging ambient light intensity is greater than default limit value.When satisfy pre-conditioned after, trigger infrared inductor 2 work, send infrared ray with normal frequency of operation to induction region.Below the present invention in each embodiment, set infrared inductor 2 normal frequency of operation and be 0.3 second and launch once.Perhaps adjust the infrared frequency of infrared inductor 2, enter normal operating conditions, send infrared ray to induction region with normal frequency of operation from dormant state.In another embodiment of the present invention, except that the variable quantity of judging ambient light intensity whether satisfy pre-conditioned, it is pre-conditioned to judge also whether the ambient light intensity value satisfies, judge that promptly working as the ambient light intensity value is positioned at default compare threshold interval, the variable quantity of judging ambient light intensity again is greater than default limit value.Specifically please refer to the description in the automatic induction method of the present invention embodiment shown in Figure 4, repeat no more herein.
Described infrared inductor 2 infrared emission units emission infrared ray is accurately discerned user's position and is judged.Infrared inductor 2 infrared receivers will detect the infrared external reflection signal and pass to controller 3, and then handle by 3 pairs of these infrared external reflection signals of controller, control relevant device 4 actions in kitchen or the lavatory, as control the water outlet of water swivel valve opening solenoid valve, or the valve opening solenoid valve bath of control urinal etc.
As mentioned above, infrared inductor 2 is not worked or is in dormant state when unmanned the use.Satisfy preset condition and have only when environment light sensor 1 detected surround lighting variable quantity etc., infrared inductor 2 is just started working or is entered duty by dormant state.Because the work of environment light sensor 1 does not require the expenditure of energy or consumes minimum energy, therefore, compared with the prior art, can effectively reduce system power dissipation by automatic induction system 100 of the present invention.Further, be used as basis for estimation, start infrared inductor according to the variable quantity of ambient light intensity, make judge more accurate, reliably.
Utilize above-mentioned automatic gain control unit, automatic gain control can be divided into fourth gear.First grade, first, second analog switch K1 and K2 connect, and first, second, third resistance R 1, R2, R3 form parallel connection; Second grade, the first analog switch K1 connects, and the second analog switch K2 disconnects, and the first, the 3rd resistance R 1, R3 form path; Third gear, the first analog switch K1 disconnects, and the second analog switch K2 connects, and second, third resistance R 2, R3 form path; Fourth speed, first, second analog switch K1 and K2 disconnect, and this moment the 3rd, resistance R 3 formed path.
In the present invention one preferred embodiment, resistance R 1 is 470K, and resistance R 2 is 2M, and resistance R 3 is 20M.When analog switch K1, K2 connected, feedback resistance was about 380K; When the K1 connection, when K2 disconnected, feedback resistance was about 470K; When the K1 disconnection, when K2 connected, feedback resistance was about 1.8M; When K1, K2 disconnected, feedback resistance was about 20M.
Really, according to practical situations, the control of the automatic gain of automatic gain control unit of the present invention can be two grades or other many grades.Described automatic gain control circuit changes accordingly.
Above-mentioned automatic gain control unit implementation procedure is as follows:
Set in advance the compare threshold interval (P2, P1), wherein first compare threshold is P1, second compare threshold is P2.
When ambient light intensity magnitude of voltage during greater than the first compare threshold P1, then reduce feedback resistance, reduce gain.Especially, when the ambient light intensity magnitude of voltage is tuned to minimumly greater than the first compare threshold P1 and gain, then think the high light state, i.e. light direct projection state.
When ambient light intensity magnitude of voltage during less than the second compare threshold P2, then increase feedback resistance, improve gain.Especially, when the ambient light intensity magnitude of voltage is tuned to the highlyest less than the second compare threshold P2 and gain, then think low light level state, i.e. night or dark state.
When being in above-mentioned high light state or low light level state, directly open infrared inductor 2, carry out infrared judgement.Under low light level state, can think (as evening) under the dark state that frequency of utilization is lower, so the infrared emission frequency is less than normal working frequency, as 0.5 second or infrared ray of emission in 0.8 second.Under low light level state, the infrared emission cycle was good between 0.5 second to 1 second.Under the high light state, the infrared emission frequency is more than or equal to normal working frequency, as once with normal working frequency emission in 0.3 second, or greater than normal working frequency with emission in 0.2 second once.
In the present invention one preferred embodiment, 80%, the second compare threshold P2 that the described first compare threshold P1 value is the circuit maximum voltage value is 20% of a circuit maximum voltage value.Selecting of above-mentioned resistance and compare threshold can effectively be eliminated the control return difference, avoids the frequent variations that gains.In addition, increase low light level state model and high light state model, make that automatic induction system 100 inductions of the present invention are more reliable, perfect.
By foregoing circuit, automatic induction system 100 of the present invention can be implemented in 0.5LUX and discerns in the scope of 1000LUX, can satisfy the actual needs in kitchen or the lavatory fully.
Because automatic induction system 100 of the present invention is applied to occasions such as kitchen or lavatory, is easy to be subjected to the interference of power frequency light such as fluorescent light.Shown in Fig. 7 a and Fig. 7 b, under the situation of unglazed interference, the ambient light intensity magnitude of voltage that is collected is more steady.And when light disturbed, tangible fluctuation then can take place in the ambient light intensity magnitude of voltage that is collected.Therefore, under the situation that light disturbs, the ambient light intensity magnitude of voltage that is collected can't truly reflect actual conditions and by the judgement that may lead to errors.Therefore, automatic induction system 100 of the present invention also comprises anti-power frequency light interference units.Should being provided with of anti-power frequency light interference units can prevent of the interference of power frequency light effectively, make that environment light sensor 1 detected ambient light intensity was more accurate, the elevator system overall performance the surround lighting collection.
As shown in Figure 8, the implementation procedure of anti-power frequency light interference units is as follows:
Usually (for example: half-wave 50Hz/60Hz) is interference period T with power frequency because power frequency light disturbs.
At first, T/2 in the cycle with uniform time interval sampling N secondary environment light intensity value.In the present invention one preferred embodiment, N equals 5.
Secondly, calculate the relative undulate quantity Δ V of the ambient light intensity that collects.In the present invention one preferred embodiment, utilize formula: calculate Δ V=(Vmax-Vmin)/((Vmax+Vmin)/2).Described Vmax value and Vmin value are respectively the minimum and maximum value of voltage of ambient light intensity in the T/2 cycle.
Do you once more, judge that described relative undulate quantity Δ V is less than default definite value W? as be judged as and be, judge that no power frequency light disturbs, export as ambient light intensity with the mean value of sampling for above-mentioned N time.As be not judged as not, judging has power frequency light to disturb, and with the same interval N secondary environment light intensity of sampling again, exports as ambient light intensity with the mean value of sampling for 2N time.
In the present invention one preferred embodiment, this W value is 3%.
Because anti-power frequency light interference units adopts different ambient light intensity computing method having power frequency light to disturb and not having under the situation of power frequency light interference, therefore can also effectively reduce power consumption, meets the development trend of energy-conserving and environment-protective.
With reference to shown in Figure 3, automatic induction method one of the present invention preferred embodiment in, automatic induction method of the present invention comprises the steps:
It is K that default ambient light intensity changes limit value.If the variable quantity of double ambient light intensity, judges that jump signal is arranged greater than default limit value K, enter step 3; Otherwise, be judged as no jump signal, get back to step 1 and gather surround lighting and computing environment light intensity again.In the present invention one preferred embodiment, described limit value K is 5%.
In this step, the variable quantity of the judgement ambient light intensity of foregoing description is for judging double ambient light intensity value variable quantity.Then, in some cases, for example under the user moves more slowly situation, if only judge according to the variable quantity of continuous ambient light intensity value, the situation that is easy to cause because this variable quantity is not more than default limit value judging inefficacy takes place.Therefore, in other embodiments of the present invention, the variable quantity of judging ambient light intensity also can be to judge the ambient light intensity value variable quantity of certain hour at interval, as judge at interval once, twice or the ambient light intensity value variable quantity of collection period repeatedly.
As in the judgement time of regulation, when not detected the user and entering in the induction region, withdraw from infrared judgement, return step 1 and carry out surround lighting again and detect.As when having detected the user and entering induction zone, then control corresponding kitchen or lavatory equipment work, for example water swivel opens the valve water outlet or closes valve seal etc.After executing associative operation, withdraw from infrared judgement, return step 1 and carry out the surround lighting detection again.
In order to improve the accuracy that surround lighting detects, automatic induction method of the present invention another preferred embodiment in, automatic induction method of the present invention increases ambient light intensity value determining step.With reference to shown in Figure 4, automatic induction method of the present invention comprises the steps:
Does step 2 judge that the ambient light intensity value is positioned at default compare threshold interval? as be judged as not, directly get back to step 1, resampling surround lighting and computing environment light intensity; As to be judged as be to enter step 3.
Default compare threshold interval be (P2, P1), wherein first compare threshold is P1, second compare threshold is P2.In the present invention one preferred embodiment, 80%, the second compare threshold P2 that the described first compare threshold P1 value is the circuit maximum voltage value is 20% of a circuit maximum voltage value.
It is K that default ambient light intensity changes limit value.If the variable quantity of double ambient light intensity, judges that jump signal is arranged greater than default limit value K, enter step 4; Otherwise, be judged as no jump signal, get back to step 1 and gather surround lighting and computing environment light intensity again.In the present invention one preferred embodiment, described limit value K is 5%.
In this step, the variable quantity of the judgement ambient light intensity of foregoing description is for judging double ambient light intensity value variable quantity.Then, in some cases, for example under the user moves more slowly situation, if only judge according to the variable quantity of continuous ambient light intensity value, the situation that is easy to cause because this variable quantity is not more than default limit value judging inefficacy takes place.Therefore, in other embodiments of the present invention, the variable quantity of judging ambient light intensity also can be to judge the ambient light intensity value variable quantity of certain hour at interval, as judge at interval once, twice or the ambient light intensity value variable quantity of collection period repeatedly.
When carrying out infrared judgement, in the judgement time of regulation, when entering in the induction region, withdraw from infrared judgement as not detected the user, return step 1 and carry out the surround lighting detection again; As when having detected the user and entering in the induction region, promptly control corresponding kitchen or lavatory equipment work, for example water swivel opens the valve water outlet or closes valve seal.After executing associative operation, withdraw from infrared judgement, return step 1 and carry out the surround lighting detection again.
In this embodiment, increase to judge whether the ambient light intensity value is positioned at the determining step in default compare threshold interval, go again to judge that whether the variable quantity of ambient light intensity is greater than default limit value.Feasible judgement is more accurate.
With reference to shown in Figure 5, automatic induction method of the present invention another preferred embodiment in, in order to guarantee effective work of automatic induction system under low light level state (as night) or high light state, automatic induction method of the present invention is on second preferred embodiment the basis, increase low light level state model and high light state model and judge, comprise the steps:
Does step 2 judge that the ambient light intensity value is positioned at default compare threshold interval? as be judged as not, enter step 3; As to be judged as be to enter step 4.
Default compare threshold interval (P2, P1), wherein first compare threshold is P1, second compare threshold is P2.In the present invention one preferred embodiment, 80%, the second compare threshold P2 that the described first compare threshold P1 value is the circuit maximum voltage value is 20% of a circuit maximum voltage value.
When ambient light intensity during greater than the first compare threshold P1, then think the high light state, start infrared inductor 2, carry out infrared judgement.Determination frequency under the high light state model is more than or equal to normal working frequency.In an embodiment of the present invention, under the high light state model, the time of opening infrared judgement was made as 60 seconds, and determination frequency is to judge once in 0.2 second.In another embodiment of the present invention, under the high light state model, the time of opening infrared judgement was made as 60 seconds, and determination frequency is to judge once in 0.3 second.
When ambient light intensity during less than the second compare threshold P2, then think low light level state, start infrared inductor 2, carry out infrared judgement.Determination frequency under low light level state model is less than normal working frequency.Under low light level state model, the time of opening infrared judgement was made as 60 seconds, and determination frequency is to judge once in 0.5 second.Really, also can be to judge once in 0.8 second.In general, once be good to judge in 0.5 to 1 second the scope.
It is K that default ambient light intensity changes limit value.If the variable quantity of double ambient light intensity, judges that jump signal is arranged greater than default limit value K, enter step 5; Otherwise, be judged as no jump signal, get back to step 1 and gather surround lighting and computing environment light intensity again.In the present invention one preferred embodiment, described limit value K is 5%.
In this step, the variable quantity of the judgement ambient light intensity of foregoing description is for judging double ambient light intensity value variable quantity.Then, in some cases, for example under the user moves more slowly situation, if only judge according to the variable quantity of continuous ambient light intensity value, the situation that is easy to cause because this variable quantity is not more than default limit value judging inefficacy takes place.Therefore, in other embodiments of the present invention, the variable quantity of judging ambient light intensity also can be to judge the ambient light intensity value variable quantity of certain hour at interval, as judge at interval once, twice or the ambient light intensity value variable quantity of collection period repeatedly.
Step 5 is carried out infrared judgement, detects object.Start infrared inductor 2, also comprise making infrared inductor 2 enter duty from dormant state.Here, the time of opening infrared judgement was made as 2 seconds, and frequency of operation is to judge once in 0.3 second.
When carrying out infrared judgement, in the judgement time of regulation, when entering in the induction region, withdraw from infrared judgement, return step 1 and carry out surround lighting again and detect as not detected the user; As when having detected the user and entering induction region, promptly control corresponding kitchen or lavatory equipment work, for example water swivel opens the valve water outlet or closes valve seal.After executing associative operation, withdraw from infrared judgement, return step 1 and carry out the surround lighting detection again.
Further, automatic induction method of the present invention another preferred embodiment in, automatic induction method of the present invention also comprises Gain Automatic adjusting.With reference to shown in Figure 6, automatic induction method of the present invention comprises the steps:
Does step 2 judge that the ambient light intensity value is positioned at default compare threshold interval? as be judged as not, enter step 3; As to be judged as be to enter step 4.
Default compare threshold interval (P2, P1), wherein first compare threshold is P1, second compare threshold is P2.In the present invention one preferred embodiment, 80%, the second compare threshold P2 that the described first compare threshold P1 value is the circuit maximum voltage value is 20% of a circuit maximum voltage value.
When ambient light intensity value during, judge that further gain control is a deep low gear greater than the first compare threshold P1? as be judged as not, gain control is reduced by one grade; As be judged as and be, then think the high light state, start infrared inductor, carry out infrared judgement.Determination frequency under the high light state model is more than or equal to normal working frequency.In an embodiment of the present invention, under the high light state model, the time of opening infrared judgement was made as 60 seconds, and determination frequency is to judge once in 0.2 second.In another embodiment of the present invention, under the high light state model, the time of opening infrared judgement was made as 60 seconds, and determination frequency is to judge once in 0.3 second.
Especially, in the present invention one preferred embodiment, gain control is directly got back to step 1, resampling surround lighting and computing environment light intensity after reducing by one grade.Really, in another embodiment of the present invention, gain control also can start infrared inductor and carry out infrared judgement after reducing by one grade.Here, the time of opening infrared judgement was made as 2 seconds, and determination frequency is to judge once in 0.3 second.
When ambient light intensity value during, judge that further gain control is for the most high-grade whether less than the second compare threshold P2? as be judged as not, gain control is increased by one grade; As be judged as and be, then think low light level state, start infrared inductor, carry out infrared judgement.Determination frequency under low light level state model is less than normal working frequency.Under low light level state model, the time of opening infrared judgement was made as 60 seconds, and determination frequency is to judge once in 0.5 second.Really, also can be to judge once in 0.8 second.In general, judged once be good with 0.5 to 1 second.
Especially, in the present invention one preferred embodiment, gain control is directly got back to step 1, resampling surround lighting and computing environment light intensity after increasing by one grade.Really, in another embodiment of the present invention, gain control also can start infrared inductor and carry out infrared judgement after increasing by one grade.Here, the time of opening infrared judgement was made as 2 seconds, and determination frequency is to judge once in 0.3 second.
The subnormal frequency of operation of determination frequency under low light level pattern.Because under low light level pattern, very likely be under night or the dark state, in this case, the general frequency of using is very low, therefore can reduce determination frequency, realizes low-power consumption.Determination frequency under the high light pattern will be higher than normal frequency of operation.Under the high light pattern, increase determination frequency, can be so that judgement be more accurate.
It is K that default ambient light intensity changes limit value.If the variable quantity of double ambient light intensity, judges that jump signal is arranged greater than default limit value K, enter step 3; Otherwise, be judged as no jump signal, get back to step 1 and gather surround lighting and computing environment light intensity again.In the present invention one preferred embodiment, described limit value K is 5%.
In this step, the variable quantity of the judgement ambient light intensity of foregoing description is for judging double ambient light intensity value variable quantity.Then, in some cases, for example under the user moves more slowly situation, if only judge according to the variable quantity of continuous ambient light intensity value, the situation that is easy to cause because this variable quantity is not more than default limit value judging inefficacy takes place.Therefore, in other embodiments of the present invention, the variable quantity of judging ambient light intensity also can be to judge the ambient light intensity value variable quantity of certain hour at interval, as judge at interval once, twice or the ambient light intensity value variable quantity of collection period repeatedly.
Step 5 is carried out infrared judgement, detects object.Start infrared inductor 2, also comprise making infrared inductor 2 enter duty from dormant state.Here, the time of opening infrared judgement was made as 2 seconds, and frequency of operation is to judge once in 0.3 second.
When carrying out infrared judgement, in the judgement time of regulation, when entering in the induction region, withdraw from infrared judgement, return step 1 and carry out surround lighting again and detect as not detected the user; As when having detected the user and entering induction region, promptly control corresponding kitchen or lavatory equipment work, for example water swivel opens the valve water outlet or closes valve seal.After executing associative operation, withdraw from infrared judgement, return step 1 and carry out the surround lighting detection again.
Shown in Fig. 7 a and Fig. 7 b, under the situation of unglazed interference, the ambient light intensity magnitude of voltage that is collected is more steady.And when light disturbed, tangible fluctuation then can take place in the ambient light intensity magnitude of voltage that is collected.Therefore, under the situation that light disturbs, the ambient light intensity magnitude of voltage that is collected can't truly reflect actual conditions and by the judgement that may lead to errors.Therefore, in order to judge more accurately and reliably, automatic induction method of the present invention is in execution in step: gather and during the computing environment light intensity, can add anti-power frequency light and disturb step.Because automatic induction system of the present invention is applied to occasions such as kitchen or lavatory, be easy to be subjected to the interference of power frequency light such as fluorescent light, therefore, should being provided with of anti-power frequency light interference units can prevent of the interference of power frequency light effectively to the surround lighting collection, make that the detected ambient light intensity of environment light sensor is more accurate, the elevator system overall performance.
As shown in Figure 8, concrete performing step is as follows:
Step 1: earlier T/2 in the cycle with uniform time interval sampling N secondary environment light intensity.Usually (for example: half-wave 50Hz/60Hz) is interference period T with power frequency because power frequency light disturbs.Therefore, earlier T/2 in the cycle with uniform time interval sampling N secondary environment light intensity.In the present invention one preferred embodiment, N equals 5.
Does step 3 judge that described relative undulate quantity Δ V is less than default definite value W? as be judged as and be, judge that no power frequency light disturbs, and enters step 4; As be judged as not, judging has power frequency light to disturb, and enters step 5.In the present invention one preferred embodiment, this W value is 3%.
Step 5 with the same interval N secondary environment light intensity of sampling again, is exported as ambient light intensity with the mean value of 2N sampling.
Be applied to be illustrated on the water swivel below in conjunction with automatic induction system of the present invention and method.
The environment light sensor 1 of automatic induction system 100 of the present invention, infrared inductor 2 are installed on respectively on water swivel (not shown) body, and controller 3 is connected with environment light sensor 1, infrared inductor 2, the flowing water Valve of control water swivel.Described environment light sensor 1 is installed and water swivel water nozzle place, and the ambient light intensity that detects the water swivel below changes.Infrared inductor 2 is installed and water swivel base annex or water nozzle place, and induction uses in the zone whether entering or leaving of object (staff) is arranged.
When the user need use water swivel, the user made the surround lighting of water swivel water nozzle below change near water swivel.After environment light sensor 1 detected variable quantity surpassed preset value, infrared inductor 2 was activated or enters into duty from dormant state.When staff enters the induction region of infrared inductor 2, controller 3 control water swivel valve opening solenoid valve water outlets.When infrared inductor was sensed staff and left, controller 3 control water swivels closed valve seals.Subsequently, infrared inductor 2 is closed or is entered into dormant state from duty.When environment light sensor 1 was judged as low light level state or high light state, infrared inductor was according to the program emission infrared ray of setting before this.
Really, automatic induction system of the present invention and method also can be applicable in other sanitary bath equipments such as urinal, w.c.pan.
In each embodiment of described the present invention, the surveyed area of environment light sensor 1 can with the induction region of infrared inductor 2, according to practical situations, can be identical, also can be different.
In each embodiment of described the present invention, open infrared inductor 2, be meant that allowing infrared inductor 2 never work to enters duty, or enter into duty from dormant state.Here, of particular note, infrared inductor 2 also is work in dormant state following time, just infrared emission frequency lower (as: emission in 2 seconds once) under dormant state.In some cases, environment light sensor 1 can because by foreign matter block, object enters the induction region surround lighting and changes small etc. former thereby can't operate as normal.At this moment, as when being in the infrared inductor 2 of working under the dormant state and having detected object and enter induction region, can enter normal operating conditions from dormant state, with normal frequency of operation (once) emission infrared ray, and testing result is passed to controller 3 also carry out corresponding operation by controller 3 as emission in 0.3 second.Afterwards or above-mentioned situation recurs twice or repeatedly after, infrared inductor 2 can carry out work with normal operating conditions always.Up to judging normally ambient light of environment light sensor 1, infrared inductor 2 carries out work according to previous program, promptly relies on environment light sensor 1 detected ambient light intensity variable quantity and startup work.Therefore, the present invention also can comprise the disposal route that anti-system can't work, and mainly comprises as follows:
When environment light sensor 1 detected ambient light intensity does not have to change or variable quantity during not greater than default limit value, and the infrared inductor 2 that is in dormant state has been when having detected object, and infrared inductor 2 carries out work with normal working frequency emission infrared ray.
When above-mentioned situation in pre-specified time, recur N (N is more than or equal to 1) inferior after, infrared inductor 2 carries out work with normal working frequency emission infrared ray always.In the present invention one preferred embodiment, N equals 2.It is K that default ambient light intensity changes limit value.In the present invention one preferred embodiment, described limit value K is 5%.
When judging that environment light sensor 1 ambient light changes and variable quantity during, think that environment light sensor 1 can operate as normal greater than the limit value set.At this moment, infrared inductor 2 carries out work with normal working frequency emission infrared ray no longer always.But, rely on environment light sensor 1 detected ambient light intensity variable quantity and startup work according to original program.
In addition, the infrared inductor 2 in the respective embodiments described above, but also can be substituted by other inductors that microwave sensor, ultrasonic sensing device or other induction targets things enter induction region.For instance, when using microwave sensor, environment light sensor senses in the surveyed area that ambient light intensity changes and variable quantity when being higher than default limit value, start microwave sensor or make microwave sensor enter into duty from dormant state, whether induction has object to enter in the induction region.When not sensed object and enter induction region as microwave sensor, dormant state is closed or entered to microwave sensor after opening certain hour (as 2 seconds).After having sensed object and enter or leave induction region as microwave sensor, carry out corresponding operation, for example control the valve opening solenoid valve water outlet of relevant device or close valve seal by controller.Subsequently, dormant state is closed or entered to microwave sensor.
But above-mentioned infrared inductor, microwave sensor, ultrasonic sensing device and other induction targets things enter other inductors of induction region and can be referred to as near inductor.Need to prove that the unlatching of describing in each embodiment among the present invention is meant near inductor: making never works near inductor enters duty, or enters into duty from dormant state.The light sensor that is used for ambient light can be referred to as environment light sensor as inductors such as photodiode, phototriode or photoresistance.
Variable quantity according to ambient light intensity among the present invention is judged, only compares and judges according to ambient light intensity, and is more reliable.Only whether judge, be easy to cause erroneous judgement disconnected greater than certain value according to ambient light intensity.For example under bright environment, the intensity level that environment light sensor collects is under the state greater than definite value always; Perhaps under darker environment, the intensity level that environment light sensor collects is under the state less than definite value always.Obviously, under above-mentioned state of giving an example, environment light sensor can't operate as normal.And the present invention judges according to the variable quantity of ambient light intensity, can overcome above-mentioned defective, and intelligence is reliable more.Specifically, when the variable quantity of ambient light intensity greater than default limit value, start and detect near inductor.Further, the present invention judges jointly according to the variable quantity of ambient light intensity value and surround lighting again, then makes the present invention more perfect.Specifically, the variable quantity that is positioned at default compare threshold interval and ambient light intensity when the ambient light intensity value starts and detects near inductor greater than default limit value.Really, under some special situations, when the variable quantity of ambient light intensity greater than default limit value or the variable quantity that is positioned at default compare threshold interval and ambient light intensity when the ambient light intensity value greater than default limit value, promptly judging has the people to use equipment between relevant bathroom and kitchen.
Though disclosed the specific embodiment of the present invention above, they are not the limitations of the scope of the invention, know those skilled in the art person the above concrete modifications and variations of implementing is also contained within the scope of the present invention.
Claims (14)
1. automatic induction system, be applied in kitchen or the lavatory, described automatic induction system comprises: detect the environment light sensor of kitchen or lavatory equipment surrounding environment light intensity and the controller of control kitchen or lavatory equipment execution corresponding actions, it is characterized in that: automatic induction system also comprise detect kitchen or lavatory equipment whether the someone use near inductor, when the variable quantity of ambient light intensity greater than default limit value or the variable quantity that is positioned at default compare threshold interval and ambient light intensity when the ambient light intensity value greater than default limit value, open and detect near inductor; Automatic induction system comprises that also the assurance ambient light intensity detects anti-accurately power frequency light interference units;
Wherein, the anti-power frequency light of described anti-power frequency light interference units disturbs step as follows:
Step 1: set the interference period T of power frequency light, earlier T/2 in the cycle with uniform time interval sampling N secondary environment light intensity;
Step 2, the relative undulate quantity Δ V of the ambient light intensity that calculating collects;
Does step 3 judge that described relative undulate quantity Δ V is less than default definite value W? as be judged as and be, judge that no power frequency light disturbs, and enters step 4; As be judged as not, judging has power frequency light to disturb, and enters step 5;
Step 4 is exported as ambient light intensity with the mean value of above-mentioned N sampling;
Step 5 with the same interval N secondary environment light intensity of sampling again, is exported as ambient light intensity with the mean value of 2N sampling.
2. automatic induction system as claimed in claim 1 is characterized in that: described is infrared inductor near inductor, comprises to induction region launching the infrared receiver that infrared signal is returned in ultrared infrared emission unit and reception.
3. automatic induction system as claimed in claim 1 is characterized in that: environment light sensor is a light sensor.
4. automatic induction system as claimed in claim 3 is characterized in that: light sensor is passive photodiode.
5. an automatic induction method in order to control kitchen or lavatory relevant device, is characterized in that: comprise the steps:
Timing sampling surround lighting and computing environment light intensity wherein in timing sampling surround lighting and the computing environment light intensity step, also comprise guaranteeing that ambient light intensity detects anti-accurately power frequency light and disturbs step;
Whether the variable quantity of judging ambient light intensity is greater than default limit value; When the variable quantity of ambient light intensity greater than default limit value, open near inductor, judged whether that the user uses kitchen or lavatory relevant device;
Wherein, described anti-power frequency light disturbs step to comprise:
Step 1: set the interference period T of power frequency light, earlier T/2 in the cycle with uniform time interval sampling N secondary environment light intensity;
Step 2, the relative undulate quantity Δ V of the ambient light intensity that calculating collects;
Does step 3 judge that described relative undulate quantity Δ V is less than default definite value W? as be judged as and be, judge that no power frequency light disturbs, and enters step 4; As be judged as not, judging has power frequency light to disturb, and enters step 5;
Step 4 is exported as ambient light intensity with the mean value of above-mentioned N sampling;
Step 5 with the same interval N secondary environment light intensity of sampling again, is exported as ambient light intensity with the mean value of 2N sampling.
6. automatic induction method as claimed in claim 5, it is characterized in that: N equals 5.
7. automatic induction method as claimed in claim 5 is characterized in that: undulate quantity Δ V equals (Vmax-Vmin)/((Vmax+Vmin)/2) relatively, and described Vmax value and Vmin value are respectively the minimum and maximum value of voltage of ambient light intensity in the T/2 cycle.
8. automatic induction method as claimed in claim 6 is characterized in that: this W value is 3%.
9. automatic induction method as claimed in claim 5 is characterized in that: described is infrared inductor near inductor, comprises to induction region launching the infrared receiver that infrared signal is returned in ultrared infrared emission unit and reception.
10. an automatic induction method in order to control kitchen or lavatory relevant device, is characterized in that: comprise the steps:
Timing sampling surround lighting and computing environment light intensity wherein in timing sampling surround lighting and the computing environment light intensity step, also comprise guaranteeing that ambient light intensity detects anti-accurately power frequency light and disturbs step;
Judge whether the ambient light intensity value is positioned at the variable quantity of default compare threshold interval and ambient light intensity greater than default limit value; The variable quantity that is positioned at default compare threshold interval and ambient light intensity when the ambient light intensity value is opened near inductor greater than default limit value, has judged whether that the user uses kitchen or lavatory relevant device;
Wherein, described anti-power frequency light disturbs step to comprise:
Step 1: set the interference period T of power frequency light, earlier T/2 in the cycle with uniform time interval sampling N secondary environment light intensity;
Step 2, the relative undulate quantity Δ V of the ambient light intensity that calculating collects;
Does step 3 judge that described relative undulate quantity Δ V is less than default definite value W? as be judged as and be, judge that no power frequency light disturbs, and enters step 4; As be judged as not, judging has power frequency light to disturb, and enters step 5;
Step 4 is exported as ambient light intensity with the mean value of above-mentioned N sampling;
Step 5 with the same interval N secondary environment light intensity of sampling again, is exported as ambient light intensity with the mean value of 2N sampling.
11. automatic induction method as claimed in claim 10 is characterized in that: N equals 5.
12. automatic induction method as claimed in claim 10 is characterized in that: Δ V equals (Vmax-Vmin)/((Vmax+Vmin)/2), and described Vmax value and Vmin value are respectively the minimum and maximum value of voltage of ambient light intensity in the T/2 cycle.
13. automatic induction method as claimed in claim 11 is characterized in that: the W value is 3%.
14. automatic induction method as claimed in claim 10 is characterized in that: described is infrared inductor near inductor, comprises to induction region launching the infrared receiver that infrared signal is returned in ultrared infrared emission unit and reception.
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| JPWO2011074511A1 (en) * | 2009-12-18 | 2013-04-25 | 日本電気株式会社 | Existence determination apparatus, system, method, and program |
| TWI584630B (en) * | 2014-12-10 | 2017-05-21 | 昇佳電子股份有限公司 | Method and system for recognizing distance between a mobile phone and a shielding object |
| CN108169814A (en) * | 2018-02-08 | 2018-06-15 | 深圳市医护宝智能科技有限公司 | A kind of infrared ray stool and urine detection device |
| CN108951023A (en) * | 2018-07-30 | 2018-12-07 | 广东晾霸智能科技有限公司 | A kind of intelligent electric clothes airing machine |
| CN112260672B (en) * | 2020-10-19 | 2024-02-06 | 深圳市太美亚电子科技有限公司 | Method for adjusting induction distance of infrared device |
| CN115032707A (en) * | 2021-03-03 | 2022-09-09 | 厦门松霖科技股份有限公司 | Induction detection method, induction device and water outlet device in high-reflection environment |
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