A kind of light fixture of being controlled by photoelectric image identification and method of operation thereof
Technical field
The present invention relates to a kind of light fixture, particularly a kind of light fixture of being controlled by photoelectric image identification and method of operation thereof.
Background technology
Existing infrared induction, when detecting human body or animal, sends infrared ray, through Fresnel Lenses process, can identify motion human or animal, but, static human or animal can not be identified.Body temperature due to human body is constant, summer ambient temperature high, when human body temperature and ambient temperature differences reduce, the detectivity of infrared induction declines.Particularly when ambient temperature is more than 32 DEG C, ultrared induction sensitivity sharply declines, and distance of reaction shortens, and therefore, adopting the sense light of infrared induction technology and inductive switch often to occur in summer cannot normal induction.
The induction of existing high-frequency microwave, also known as radar induction, can paratonic movement object, but high-frequency microwave signal can penetrate wall, easily produces false triggering.
Existing voice signal induction, has and exceedes activation threshold value voice signal, switch conduction, close after time delay.
Existing employing delay technique controls lamp switch has continuous trigger and interval to trigger two kinds of modes usually.When personnel do not move in latency period, the amplitude of moving hour or without when exceeding the voice signal of threshold value, delay switch time delay terminates rear closedown light fixture, when personnel or object move in latency period, delay switch will continue time delay by delay duration again at trigger instants; This is continuous trigger mode.When closing after time delay, restart after triggering, this is interval triggering mode.These two kinds of triggering modes have following technical disadvantages: 1) can only identify mobile human body or moving object, the people that None-identified is forbidden and object; 2) distance detected is short, the narrow range of detection.
Chinese patent literature CN 101957235 A disclosed a kind of intermittent illuminance detecting device on 01 26th, 2011, comprise base, the bottom space of described base is provided with the photoelectric cell closing device for placing photoelectric cell, described base is also provided with and drives this photoelectric cell closing device to rotate and drive the driver of photoelectric cell closing device protuberate basic unit bottom surface.This illuminance detecting device can make photoelectric cell its light receiving surface when detecting block without any, during non-detection, light receiving surface is blocked completely, effectively improve the accuracy of testing result, it has certain dust-proof, rainproof function simultaneously, avoid photoelectric cell to be subject to the illumination duration oversize, guarantee the useful life of photoelectric cell.
Summary of the invention
Object of the present invention aims to provide a kind of light fixture controlled by photoelectric image identification and method of operation thereof of simple and reasonable, flexible operation, applied range, to overcome weak point of the prior art.
By a kind of light fixture controlled by photoelectric image identification that this object designs, comprise light fixture and illuminance detecting device, its architectural feature also comprises the middle control machine being preset with IMAQ recognition system chip, illuminance detecting device connects with middle control machine, camera for gathering image connects with middle control machine, infrared light generator connects with middle control machine, and middle control machine connects with light fixture.
Further, described middle control machine is also preset with stationary object recognizer chip and/or interference signal elimination program chip.
Further, the light fixture controlled by photoelectric image identification, also comprises the solar energy power accumulating device connected with middle control machine.
A method of operation for the method for operation of the light fixture controlled by photoelectric image identification, is characterized in that comprising the following steps:
Step one, carries out illuminance detection by illuminance detecting device to the environment in search coverage, obtains illuminance detected value;
By middle control machine, step 2, judges that whether illuminance detected value is lower than threshold values: when illuminance detected value is higher than threshold values, proceed to step 14, when illuminance detected value is lower than threshold values, proceeds to step 3;
Step 3, wakes middle control machine up, starts IMAQ recognition system and infrared light generator;
Step 4, by the image information in camera collection search coverage;
Step 5, carries out picture signal process by IMAQ recognition system;
Step 6, judges whether have people or object in search coverage by IMAQ recognition system: when nobody in search coverage or object, proceeding to step 5, when having people or object in search coverage, proceeding to step 7;
Step 7, opens the control signal of light fixture by middle control machine;
By IMAQ recognition system, step 8, judges whether people in search coverage or object leave: when exiting, proceeding to step 15, when not leaving, proceeding to step 9;
By middle control machine, step 9, judges that whether illuminance detected value is higher than threshold values: when judged result is "Yes", proceed to step 10, when judged result is "No", proceeds to step 5;
Step 10, by middle control machine start-up study program, carries out time delay;
By middle control machine, step 11, judges that whether illuminance detected value is higher than threshold values: when judged result is "Yes", proceed to step 12, when judged result is "No", proceeds to step 5;
Step 12, closes control signal by middle control office;
Step 13, middle control machine is in standby resting state, and closes infrared light generator;
Step 14, middle control machine continues dormancy, closes IMAQ recognition system;
Step 15, by closing control signal after the time delay of middle control machine.
Further, the span of described threshold values is 2 ~ 15LUX or sets as requested.
Further, the span of described time delay is 1 ~ 5 minute or sets as requested.
Illuminance detecting device in the present invention connects with middle control machine, camera for gathering image connects with middle control machine, infrared light generator connects with middle control machine, middle control machine connects with light fixture, the picture signal in search coverage is obtained by camera, through in IMAQ recognition system chip in control machine and the chip process of stationary object recognizer and analysis image signal, if have people or object in search coverage, control by middle control machine and open light fixture, after people or object leave, control by middle control machine and close light fixture.
The present invention adopts camera to obtain picture signal in search coverage, by day or ambient light intensity higher than predetermined threshold value time, utilize surround lighting imaging; At night or ambient light intensity lower than predetermined threshold value time, open infrared light generator, adopt the near infrared imaging of people or reflections off objects.Middle control machine processes in real time to the photoelectric image gathered; In the middle of control machine identify people or object in search coverage time, whether the illuminance of monitoring of environmental is lower than the threshold value set simultaneously, and when ambient light illumination is higher than the threshold value set, middle control machine does not export control signal, when ambient light illumination is lower than the threshold value set, middle control machine exports control signal; Control signal, for controlling the variable frequency power supply of lamp switch or control light fixture self, changes the power output of this variable frequency power supply.
Middle control machine in the present invention processes in real time to picture signal, and when finder or object leave search coverage, after time delay a period of time, middle control office closes control signal.
The present invention has the following advantages: 1) can identify in search coverage whether have people or object; 2) can turn on light according to when people or object are in search coverage, and people or object leave after turn off the light, realize people and to turn on light and people goes to turn off the light; 3) angle detected is wide, distance; 4) intelligent image recognition technology, can identify the people in detecting area or object, takes different open and close lamp patterns; 5) antijamming capability is strong, and false triggering rate is low, not by the impact of ambient temperature; 6) range of application is more extensive.
In sum, the present invention has simple and reasonable, flexible operation, applied range feature.
Accompanying drawing explanation
Fig. 1 is the control block diagram of one embodiment of the invention.
Fig. 2 is operational flowchart of the present invention.
Embodiment
Below in conjunction with drawings and Examples, the invention will be further described.
See Fig. 1-Fig. 2, this light fixture controlled by photoelectric image identification, comprise light fixture and illuminance detecting device, it is characterized in that also comprising the middle control machine being preset with IMAQ recognition system chip, illuminance detecting device connects with middle control machine, camera for gathering image connects with middle control machine, and infrared light generator connects with middle control machine, and middle control machine connects with light fixture.
Wherein, camera, light fixture, between infrared light generator and middle control machine, be respectively double-direction control, both control the control of machine in receiving and provide corresponding information to middle control machine, control the adjustment information of machine in can also receiving and the corresponding information after adjusting is fed back to middle control machine, such as, camera is controlled the angle adjustment information of machine or Focussing information and carries out adjusting angle and the corresponding information after adjustment is fed back to middle control machine in receiving.
In the present embodiment, described middle control machine is also preset with stationary object recognizer chip and/or interference signal elimination program chip.
The effect that interference signal eliminates program chip is the control precision and the accuracy that improve this product further.
In the present embodiment, IMAQ recognition system chip, stationary object recognizer chip and interference signal can be eliminated program chip and be made as standard plug-in unit respectively, then as required and select needed for chip and be inserted in the slot of middle control machine, with the range of application of popular edition product.Certainly, just IMAQ recognition system, stationary object recognizer and interference signal are eliminated program and are contained in advance in middle control machine and are also fine.
The light fixture controlled by photoelectric image identification, also comprises the solar energy power accumulating device connected with middle control machine.
The method of operation of the method for operation of the light fixture controlled by photoelectric image identification, is characterized in that comprising the following steps:
Step one, carries out illuminance detection by illuminance detecting device to the environment in search coverage, obtains illuminance detected value;
By middle control machine, step 2, judges that whether illuminance detected value is lower than threshold values: when illuminance detected value is higher than threshold values, proceed to step 14, when illuminance detected value is lower than threshold values, proceeds to step 3;
Step 3, wakes middle control machine up, starts IMAQ recognition system and infrared light generator;
Step 4, by the image information in camera collection search coverage;
Step 5, carries out picture signal process by IMAQ recognition system;
Step 6, judges whether have people or object in search coverage by IMAQ recognition system: when nobody in search coverage or object, proceeding to step 5, when having people or object in search coverage, proceeding to step 7;
Step 7, opens the control signal of light fixture by middle control machine;
By IMAQ recognition system, step 8, judges whether people in search coverage or object leave: when exiting, proceeding to step 15, when not leaving, proceeding to step 9;
By middle control machine, step 9, judges that whether illuminance detected value is higher than threshold values: when judged result is "Yes", proceed to step 10, when judged result is "No", proceeds to step 5;
Step 10, by middle control machine start-up study program, carries out time delay;
By middle control machine, step 11, judges that whether illuminance detected value is higher than threshold values: when judged result is "Yes", proceed to step 12, when judged result is "No", proceeds to step 5;
Step 12, closes control signal by middle control office;
Step 13, middle control machine is in standby resting state, and closes infrared light generator;
Step 14, middle control machine continues dormancy, closes IMAQ recognition system;
Step 15, by closing control signal after the time delay of middle control machine.
The span of described threshold values is 2 ~ 15LUX or sets as requested.
The delay time of present electronic switch is generally 35 seconds ~ 90 seconds, considers powerful street lamp, and owing to there being the interference of auto lamp, so in the present embodiment, the span of described time delay is 1 ~ 5 minute or sets as requested.
The span of described threshold values and the span of time delay, except the value range of the above-mentioned determination provided, can also be adjusted according to specific environment by user, farthest to meet the needs of local search coverage.
In the present embodiment, the setting of stationary object recognizer chip is the setting carried out for following situation: external people or object enter search coverage, if people have left, nobody rests in search coverage, and time delay is closed light fixture or set as requested after 1 ~ 10 minute; Or if people have left and object does not leave, nobody rests in search coverage, and time delay closed light fixture after 1 ~ 10 minute.
Above-mentioned time delay, is all undertaken by middle control machine, does not adopt delay switch in addition.
More than show and describe general principle of the present invention and principal character and advantage of the present invention.The technical staff of the industry should understand; the present invention is not restricted to the described embodiments; what describe in above-described embodiment and specification just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.Application claims protection range is defined by appending claims and equivalent thereof.