CN204633915U - A projector with human eye recognition protection system - Google Patents
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- CN204633915U CN204633915U CN201520351897.2U CN201520351897U CN204633915U CN 204633915 U CN204633915 U CN 204633915U CN 201520351897 U CN201520351897 U CN 201520351897U CN 204633915 U CN204633915 U CN 204633915U
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Abstract
本实用新型提供了一种具有人眼识别防护系统的投影机,包含判别元件、检测元件、处理单元及控制单元,其中判别元件及检测元件均设于投影机中且分别的设置方向与投影机镜头方向相同,判别元件与控制单元信号相连,同时分别经检测单元、处理单元与控制单元信号相连;控制单元与投影机信号相连,藉由前述结构构造及其结合,解决了人眼识别防护系统应用于投影机的技术问题,达成了自动开启/关闭投影机镜头不伤害人体健康以及节能、环保的良好效果。
The utility model provides a projector with a human eye recognition and protection system, which includes a discrimination element, a detection element, a processing unit and a control unit, wherein the discrimination element and the detection element are both arranged in the projector and are respectively arranged in the same direction as the projector. The direction of the lens is the same, the discrimination element is connected to the signal of the control unit, and at the same time, the signal of the detection unit and the processing unit are connected to the signal of the control unit; the control unit is connected to the signal of the projector. The technical problem applied to the projector has achieved good effects of automatically turning on/off the projector lens without harming human health, energy saving and environmental protection.
Description
技术领域 technical field
本实用新型涉及一种投影机,尤其是指一种具有人眼识别防护系统的投影机。 The utility model relates to a projector, in particular to a projector with a human eye recognition protection system.
背景技术 Background technique
随着投影机光源系统的改良优化,投影机的亮度也在不断提升。投影机特别是高亮度投影机,在正常使用的过程中会投射出强光,当有人走入投影机投射区域中或者儿童好奇直接窥视投影机镜头,类似情形时常发生。 With the improvement and optimization of the projector light source system, the brightness of the projector is also continuously improved. Projectors, especially high-brightness projectors, will project strong light during normal use. Similar situations often occur when someone walks into the projection area of the projector or children are curious and directly peek into the lens of the projector.
投影机的光线直射人眼后,眼睛很快调节至明适应状态,过高亮度的光线让人短时间内产生刺眼眩目的不适感,视觉灵敏度和分辨力降低,极可能发生意外(例如摔倒、碰到物体等),危害人的生命健康安全和其他财产安全。更进一步地,亮度越高光能量越高,而光照射到物体上时,物体将吸收光能而温度升高。特别是当人眼离投影机镜头的距离非常近时,温度甚至可以达到破坏视觉细胞组织的阈值,因此投影机会对视力造成永久损害。 After the light of the projector directly hits the human eyes, the eyes quickly adjust to the bright adaptation state. The light with too high brightness makes people feel dazzling and uncomfortable in a short time, the visual sensitivity and resolution are reduced, and accidents (such as falling down) are very likely to occur. , touching objects, etc.), endangering human life, health and safety and other property safety. Furthermore, the higher the brightness, the higher the light energy, and when the light is irradiated on the object, the object will absorb the light energy and the temperature will rise. Especially when the distance between the human eye and the projector lens is very close, the temperature can even reach the threshold of destroying visual cell tissue, so the projector will cause permanent damage to vision.
因此,当人眼介入或即将介入投影机投射区域(本文将“投影机投射区域以及人眼即将介入但未介入的投影机投射区域外小范围区域”定义为“有效区域”,以下凡出现“介入或即将介入投影机投射区域”,均以“介入有效区域”代替)时,特别是人眼近距离介入时,该投影机应能控制画面不显示或画面自动熄灭,以保护人的生命健康安全,而当人眼离开或者人眼未在有效区域,该投影机应能恢复画面显示或画面正常开启。 Therefore, when the human eye intervenes or is about to intervene in the projection area of the projector (this paper defines the "projection area of the projector and the small area outside the projection area of the projector that the human eye is about to intervene but does not intervene" as the "effective area", the following " Intervening or about to intervene in the projection area of the projector", all replaced by "intervention effective area"), especially when the human eye intervenes at close range, the projector should be able to control the screen not to be displayed or the screen to be automatically extinguished to protect human life and health Safety, and when the human eyes are away or the human eyes are not in the effective area, the projector should be able to restore the screen display or the screen will be turned on normally.
发明内容 Contents of the invention
为解决上述技术问题,本实用新型的主要目的在于提供一种具有人眼识别防护系统的投影机。 In order to solve the above technical problems, the main purpose of this utility model is to provide a projector with a human eye recognition protection system.
为达成上述目的,本实用新型应用的技术方案是:一种具有人眼识别防护系统的投影机,包含判别元件、检测元件、处理单元及控制单元,其中:判别元件及检测元件均设于投影机中且分别的设置方向与投影机镜头方向相同,判别元件与控制单元信号相连,同时分别经检测单元、处理单元与控制单元信号相连;控制单元与投影机信号相连。 In order to achieve the above purpose, the technical solution applied by the utility model is: a projector with a human eye recognition protection system, including a discrimination element, a detection element, a processing unit and a control unit, wherein: the discrimination element and the detection element are both arranged in the projector The direction of setting in the machine is the same as that of the projector lens, the distinguishing element is connected to the signal of the control unit, and at the same time is connected to the signal of the control unit through the detection unit and the processing unit respectively; the control unit is connected to the signal of the projector.
在本实施例中优选,处理单元包括有图像处理器,判别元件包括红外感应探测器,控制单元包括开关切换电路。 In this embodiment, preferably, the processing unit includes an image processor, the discrimination element includes an infrared sensor detector, and the control unit includes a switch switching circuit.
在本实施例中优选,具有人眼识别防护系统的投影机还包括LED灯。 Preferably in this embodiment, the projector with the human eye recognition protection system further includes LED lights.
在本实施例中优选,检测元件具有高清红外线摄像头。 In this embodiment, preferably, the detection element has a high-definition infrared camera.
在本实施例中优选,图像处理器分别与红外感应探测器及高清红外线摄像头信号相连,也与开关切换电路信号相连,开关切换电路分别与LED灯及投影机信号相连。 Preferably in this embodiment, the image processor is connected to the signals of the infrared sensor detector and the high-definition infrared camera, and is also connected to the signal of the switch switching circuit, and the switch switching circuit is connected to the signal of the LED lamp and the projector respectively.
在本实施例中优选,检测元件具有热红外敏感CCD。 Preferably in this embodiment, the detection element has a thermal infrared sensitive CCD.
在本实施例中优选,图像处理器分别与红外感应探测器及热红外敏感CCD信号相连,也与开关切换电路信号相连,开关切换电路分别与LED灯及投影机信号相连。 In this embodiment, preferably, the image processor is connected to the signals of the infrared sensing detector and the thermal infrared sensitive CCD, and is also connected to the signals of the switching circuit, and the switching circuit is respectively connected to the signals of the LED lamp and the projector.
本实用新型与现有技术相比,其有益的效果:一是基于人性化之精神,根据人眼所处位置变化,控制投影机镜头开启或关闭,以免对人和财物造成伤害;二是先根据判断前方是否有人(活体)的方案设计,其不受投影机投射画面中的人(假体)图像影响,再到是否有人眼部位,最后控制投影机变化,此方案下对硬件要求相对较低,处理单元是触发式运行,降低了其处理负荷,能耗降低,符合绿色环保主旨;三是提出了“有效区域”概念,用户在有效域之外时,投影机是不触发的,用户即将进入投射区域时,触发投影机预判用户的运动轨迹,决定是否响应效果。投影机的识别人眼和防护永远先于用户,因而用户眼睛不会遭受强光刺激。 Compared with the prior art, the utility model has beneficial effects: firstly, based on the spirit of humanization, according to the position change of human eyes, the projector lens is controlled to open or close, so as not to cause harm to people and property; According to the scheme design of judging whether there is a person (living body) in front, it is not affected by the image of the person (prosthesis) in the projected screen of the projector, and then whether there is a human eye, and finally controls the change of the projector. The hardware requirements under this scheme are relative. Low, the processing unit is a trigger operation, which reduces its processing load, reduces energy consumption, and is in line with the purpose of green environmental protection; thirdly, the concept of "effective area" is proposed. When the user is outside the effective area, the projector will not be triggered. When the user is about to enter the projection area, the projector is triggered to predict the user's trajectory and decide whether to respond to the effect. The projector's recognition of human eyes and protection are always prior to the user, so the user's eyes will not be stimulated by strong light.
附图说明 Description of drawings
图1是本实用新型实施例方框结构示意图。 Fig. 1 is a block diagram of the embodiment of the utility model.
图2是本实用新型实施例方框结构原理示意图。 Fig. 2 is a schematic diagram of the principle of the block structure of the embodiment of the utility model.
图3是本实用新型实施例中投影机投射有效区域示意图。 Fig. 3 is a schematic diagram of the effective area projected by the projector in the embodiment of the present invention.
图4是本实用新型实施例中人眼识别方框结构流程示意图。 Fig. 4 is a schematic flow chart of the human eye recognition block structure in the embodiment of the present invention.
图5是本实用新型实施例中人眼识别防护系统的方框结构示意图。 Fig. 5 is a schematic block diagram of the human eye recognition protection system in the embodiment of the present invention.
图6是本实用新型具体实施例方框结构示意图。 Fig. 6 is a block diagram of a specific embodiment of the utility model.
图7是本实用新型实施例的使用状态示意图。 Fig. 7 is a schematic diagram of the use state of the embodiment of the utility model.
具体实施方式 Detailed ways
下面结合具体实施例及附图对本实用新型作进一步详细说明。下面详细描述本实用新型的实施例,所述实施例的示例在附图中示出,其中自始至终相同或类似的标号表示相同或类似的元件或具有相同或类似功能的元件。下面通过参考附图描述的实施例是示例性的,仅用于解释本实用新型的技术方案,而不应当解析为对本实用新型的限制。 Below in conjunction with specific embodiment and accompanying drawing, the utility model is described in further detail. Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the technical solutions of the present utility model, and should not be interpreted as limiting the present utility model.
在本实用新型的描述中,术语“内”、“外”、“纵向”、“横向”、“上”、“下”、“顶”、“底”等指示的方位或位置关系为基于附图所示的方位或位置关系,仅是为了便于描述本实用新型而不是要求本实用新型必须以特定的方位构造和操作,因此不应当解析为对本实用新型的限制。 In the description of the present utility model, the orientation or positional relationship indicated by the terms "inner", "outer", "longitudinal", "transverse", "upper", "lower", "top", "bottom" etc. are based on the attached The orientation or positional relationship shown in the figure is only for the convenience of describing the utility model and does not require the utility model to be constructed and operated in a specific orientation, so it should not be interpreted as a limitation of the utility model.
请参阅图1并结合参阅图2至图7所示,本实用新型提供一种具有人眼识别防护系统的投影机,其中:人眼识别防护系统设于投影机100(如图1、图5)中并将包含至少一判别元件10设于投影机镜头101同侧;也将包含至少一检测元件20设于投影机镜头101同侧,检测元件20与判别元件10信号相连;还将包含一处理单元30及一控制单元40,处理单元30与检测元件20信号相连,控制单元40分别与判别元件10和处理单元30信号相连,投影机100与控制单元40信号相连,并能产生投影画面且投射至投射区域(为投影机投射出的画面区域)200(如图3所示)。 Please refer to Fig. 1 and refer to Fig. 2 to Fig. 7, the utility model provides a projector with a human eye recognition protection system, wherein: the human eye recognition protection system is set on the projector 100 (as shown in Fig. 1, Fig. 5 ) will include at least one discrimination element 10 located on the same side of the projector lens 101; it will also include at least one detection element 20 located on the same side of the projector lens 101, and the detection element 20 is connected to the discrimination element 10 signal; it will also include a The processing unit 30 and a control unit 40, the processing unit 30 is connected to the signal of the detection element 20, the control unit 40 is connected to the signal of the discrimination element 10 and the processing unit 30 respectively, the projector 100 is connected to the signal of the control unit 40, and can generate a projected picture and Project to the projection area (the area of the screen projected by the projector) 200 (as shown in FIG. 3 ).
请再结合参阅图2所示,判别元件10为至少一红外感应探测器11(如图6所示),红外感应探测器11实时探测有效区域(要比投射区域略大)201中人体辐射出的红外线。当红外感应探测器11未接收到人体辐射出的红外线时,红外探头111所包含的热释电元件(未图示)处于电荷平衡状态或恢复平衡状态,判别此状态后,控制单元40直接控制投影机100处于正常显示/开启画面;当红外感应探测器11接收到人体辐射出的红外线时,热释电元件(未图示)会释放出电荷并失去电荷平衡状态,电荷再经过放大电路(如红外感应控制芯片)112,经判别此状态后,检测元件20开始运行,检测元件20(如图6所示)为至少一个摄像头21,受红外感应探测器11接收到人介入有效区域201,触发摄像头21连续撷取有效区域201的影像数据,以此原始影像数据S1作进一步处理。为了能适应各种光线条件并能连续撷取高质量的影像数据,摄像头21采用高清红外线摄像头,可保证人眼在介入投射区域而未介入有效区域201的低照度条件下能撷取清晰有效影像数据。在本实施例中,检测元件20为至少一热红外敏感CCD,受红外感应探测器11接收到人介入有效区域,触发热红外敏感CCD连续撷取有效区域的热成像数据,以此原始影像数据做进一步处理。在本实施例中,处理单元30至少包括有图像处理器31(如图6),图像处理器31分别与放大电路112及摄像头21信号相连的同时也与控制单元40信号相连。在本实施例中,控制单元40分别与图像处理器31及放大电路112信号相连并具有开关切换电路41(如图6),开关切换电路41与LED灯、投影机100信号相连。 Please refer to FIG. 2 again, the discriminant element 10 is at least one infrared sensor detector 11 (as shown in FIG. 6 ), and the infrared sensor detector 11 detects the effective area (slightly larger than the projected area) 201 in the human body radiation in real time. of infrared. When the infrared sensing detector 11 does not receive the infrared rays radiated by the human body, the pyroelectric element (not shown) contained in the infrared probe 111 is in a charge balance state or returns to a state of balance. After judging this state, the control unit 40 directly controls The projector 100 is in the normal display/open screen; when the infrared sensor detector 11 receives the infrared rays radiated from the human body, the pyroelectric element (not shown) will release the charge and lose the state of charge balance, and the charge will pass through the amplification circuit ( Such as infrared sensor control chip) 112, after judging this state, the detection element 20 starts to operate, and the detection element 20 (as shown in Figure 6) is at least one camera 21, which is received by the infrared sensor detector 11 when people intervene in the effective area 201, The camera 21 is triggered to capture the image data of the effective area 201 continuously, and the original image data S1 is further processed. In order to be able to adapt to various light conditions and continuously capture high-quality image data, the camera 21 uses a high-definition infrared camera, which can ensure that the human eye can capture clear and effective image data under low-illumination conditions that intervene in the projection area but not in the effective area 201 . In this embodiment, the detection element 20 is at least one thermal infrared sensitive CCD, and the thermal infrared sensitive CCD is triggered to continuously capture the thermal imaging data of the effective area when the infrared sensing detector 11 receives the human intervention into the effective area, so as to obtain the original image data for further processing. In this embodiment, the processing unit 30 includes at least an image processor 31 (as shown in FIG. 6 ), and the image processor 31 is respectively connected to the amplifier circuit 112 and the camera 21 for signals, and is also connected to the control unit 40 for signals. In this embodiment, the control unit 40 is respectively connected to the image processor 31 and the amplifier circuit 112 and has a switch switching circuit 41 (as shown in FIG. 6 ). The switch switching circuit 41 is connected to the LED lamp and the projector 100 for signals.
请再结合参阅图4所示,为本实用新型提出的具有人眼识别防护系统的投影机的人眼识别流程图。处理单元30接收原始影像数据S1后,由于摄像头21撷取所得到的图像数据和真实图像会有某种程度的差异,而这种差异会直接影响处理单元30对于真实图像的解析,因此处理单元30要对影像进行降噪、增强处理。降噪、增强处理S2后,数据中还包含许多不相关的数据,因此处理单元30要对影像进行图像边缘检测S3处理,仅保留图像的重要结构属性,剔除掉不相关的数据。图像边缘处理S3后,处理单元30运行图像分割处理S4,将图像划分成互不交叠的部分,这些被分割后的部分将代表不同的物体(包括人眼和人脸),确保进一步识别各部分中是否包含人(眼)脸。处理单元30提取分割后各部分的图像特征(颜色、形状、对应关系等),分别与预设的人(眼)人脸模板S6进行相似度匹配;当相似度达到一定阈值时,判断有效区域201中包含人眼,处理单元30将对控制单元40发出关闭指令,控制单元40通过开关切换电路41控制投影机100关闭投影画面(同时LED灯开启),以保护人的生命健康安全及其它财产安全;反之,当相似度未达到比例时,处理单元30将对控制单元40发出打开指令,控制单元40通过开关切换电路41控制投影机100正常显示/开启画面(同时LED灯关闭)。 Please refer again to FIG. 4 , which is a flow chart of human eye recognition for a projector with a human eye recognition protection system proposed by the present invention. After the processing unit 30 receives the original image data S1, since the image data captured by the camera 21 and the real image will have a certain degree of difference, and this difference will directly affect the analysis of the real image by the processing unit 30, so the processing unit 30 It is necessary to perform noise reduction and enhancement processing on the image. After noise reduction and enhancement processing S2, the data still contains a lot of irrelevant data, so the processing unit 30 needs to perform image edge detection S3 processing on the image, only keep the important structural attributes of the image, and eliminate irrelevant data. After the image edge processing S3, the processing unit 30 executes the image segmentation processing S4 to divide the image into non-overlapping parts. These divided parts will represent different objects (including human eyes and human faces) to ensure further recognition of each object. Whether to include human (eye) faces in the section. The processing unit 30 extracts the image features (color, shape, corresponding relationship, etc.) of each part after segmentation, and performs similarity matching with the preset human (eye) face template S6; when the similarity reaches a certain threshold, the effective area is judged 201 includes the human eye, and the processing unit 30 will issue a shutdown command to the control unit 40, and the control unit 40 controls the projector 100 to turn off the projection screen (while the LED light is turned on) through the switch switching circuit 41, so as to protect human life, health and other property Safety; on the contrary, when the similarity does not reach the ratio, the processing unit 30 will issue an open instruction to the control unit 40, and the control unit 40 controls the projector 100 to display/open the picture normally (while the LED light is turned off) through the switch switching circuit 41 .
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