CN104159084A - Monitoring method based on novel monitoring lens and dual image sensors - Google Patents
Monitoring method based on novel monitoring lens and dual image sensors Download PDFInfo
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Abstract
本发明公开了一种基于新型监控镜头和双图像传感器的监控方法，通过监控系统执行监控，监控系统包括监控主机和监控镜头；监控主机中设有微处理器、第一图像传感器(13)、第二图像传感器(14)、显示器和存储器；所述的监控镜头包括外筒体(1)、内筒体(10)、镜头卡口(2)、半透反光镜(3)、反射镜(4)、红外感应识别装置(15)、透镜组(5)、红外截止滤光片(6)和可见光截止滤光片(9)；半透反光镜和反射镜均相对于外筒体的轴线倾斜45°设置在外筒体内；该基于新型监控镜头和双图像传感器的监控方法整体构思新颖巧妙，能执行全天候监控，且能获得高视频质量。
The invention discloses a monitoring method based on a novel monitoring lens and dual image sensors. The monitoring is carried out through a monitoring system. The monitoring system includes a monitoring host and a monitoring lens; the monitoring host is provided with a microprocessor, a first image sensor (13), Second image sensor (14), display and memory; Described monitoring camera lens comprises outer cylindrical body (1), inner cylindrical body (10), lens bayonet (2), semi-transparent mirror (3), reflecting mirror ( 4), infrared induction identification device (15), lens group (5), infrared cut-off filter (6) and visible light cut-off filter (9); semi-transparent mirror and reflector are all relative to the axis of the outer cylinder It is installed in the outer cylinder with an inclination of 45°; the overall concept of the monitoring method based on the new monitoring lens and dual image sensors is novel and ingenious, and it can perform all-weather monitoring and obtain high video quality.
Description
技术领域technical field
本发明涉及一种基于新型监控镜头和双图像传感器的监控方法。The invention relates to a monitoring method based on a novel monitoring lens and dual image sensors.
背景技术Background technique
在视频监控领域，一般采用常规的镜头以获取图像，但是现有的光学镜头只有一个出光口，功能有限，更适合应用于普通场合，而且，普通的监控设备，在白天实施监控时，由于受到红外光的干扰，图像质量无法保障，因此，有必要设计一种新型的监控方法专门用于视频监控领域。In the field of video surveillance, conventional lenses are generally used to obtain images, but the existing optical lenses have only one light outlet, and their functions are limited, so they are more suitable for ordinary occasions. The image quality cannot be guaranteed due to the interference of infrared light. Therefore, it is necessary to design a new monitoring method specially used in the field of video monitoring.
发明内容Contents of the invention
本发明所要解决的技术问题是提供一种基于新型监控镜头和双图像传感器的监控方法，该基于新型监控镜头和双图像传感器的监控方法整体构思新颖巧妙，能执行全天候监控，且能获得高视频质量。The technical problem to be solved by the present invention is to provide a monitoring method based on a new type of monitoring lens and a dual image sensor. quality.
发明的技术解决方案如下：The technical solution of the invention is as follows:
一种基于新型监控镜头和双图像传感器的监控方法，采用监控主机和监控镜头实施监控；A monitoring method based on a new type of monitoring lens and dual image sensors, using a monitoring host and a monitoring lens to implement monitoring;
所述的监控主机中设有微处理器、第一图像传感器(13)、第二图像传感器Described monitoring main frame is provided with microprocessor, the first image sensor (13), the second image sensor
(14)、显示器和存储器；(14), display and memory;
所述的监控镜头包括外筒体(1)、内筒体(10)、镜头卡口(2)、半透反光镜(3)、反射镜(4)、红外感应识别装置(15)、透镜组(5)、红外截止滤光片(6)和可见光截止滤光片(9)；The monitoring lens includes an outer cylinder (1), an inner cylinder (10), a lens bayonet (2), a semi-transparent mirror (3), a mirror (4), an infrared sensing recognition device (15), a lens group (5), infrared cut-off filter (6) and visible light cut-off filter (9);
内筒体设置在外筒体内，且内筒体的轴线与外筒体的轴线平行；The inner cylinder is arranged in the outer cylinder, and the axis of the inner cylinder is parallel to the axis of the outer cylinder;
内筒体的前端开口为进光口，进光口位于外筒体的前端面，外筒体的后端具有2个出光口，2个出光口即第一出光口(7)和第二出光口(8)；透镜组(5)以与内筒体轴线垂直的方式设置在内筒体内；红外截止滤光片(6)和可见光截止滤光片(9)均以与外筒体轴线垂直的方式设置在外筒体内，且透镜组设置在进光口的后方，可见光截止滤光片设置在第一出光口的前方，红外截止滤光片设置在第二出光口的前方；镜头卡口设置在外筒体的后端部；The front opening of the inner cylinder is a light inlet, and the light inlet is located on the front surface of the outer cylinder, and the rear end of the outer cylinder has two light outlets, the two light outlets are the first light outlet (7) and the second light outlet port (8); the lens group (5) is arranged in the inner cylinder in a manner perpendicular to the axis of the inner cylinder; the infrared cut-off filter (6) and the visible light cut-off filter (9) are arranged perpendicular to the axis of the outer cylinder The way is set in the outer cylinder, and the lens group is set behind the light inlet, the visible light cut filter is set in front of the first light exit, and the infrared cut filter is set in front of the second light exit; the lens bayonet is set at the rear end of the outer cylinder;
红外感应识别装置设置在外筒体内，且红外感应识别装置中的红外传感器(12)设置在外筒体的前端部；The infrared induction identification device is arranged in the outer cylinder body, and the infrared sensor (12) in the infrared induction identification device is arranged at the front end of the outer cylinder body;
半透反光镜和反射镜均相对于外筒体的轴线倾斜45°设置在外筒体内，且半透反光镜和反射镜互相平行；半透反光镜和反射镜的儿何中心的连线与外筒体的轴线垂直；Both the semi-transparent mirror and the reflector are arranged in the outer cylinder with an inclination of 45° relative to the axis of the outer cylinder, and the semi-transparent mirror and the reflector are parallel to each other; The axis of the cylinder is vertical;
外部光线从进光口进入后依次透过透镜组、半透反光镜和红外截止滤光片并最终从第二出光口射出形成透射光路；After the external light enters from the light inlet, it passes through the lens group, the semi-transparent mirror and the infrared cut filter in sequence, and finally emits from the second light outlet to form a transmission light path;
外部光线从进光口进入后先透过透镜组、然后经半透反光镜和反射镜两次反射、再透过可见光截止滤光片并最终从第一出光口射出形成反射光路；After the external light enters from the light inlet, it first passes through the lens group, then is reflected twice by the semi-transparent mirror and the reflector, then passes through the visible light cut-off filter, and finally exits from the first light outlet to form a reflected light path;
在进光口的周边设有12个红外发射灯(11)，该12个红外发射灯沿内筒体的周向均匀布置；外筒体内设有红外发射灯的驱动电路；12 infrared emitting lamps (11) are arranged around the light inlet, and the 12 infrared emitting lamps are evenly arranged along the circumference of the inner cylinder; a driving circuit for the infrared emitting lamp is arranged in the outer cylinder;
所述的卡口上设有用于获取电源以及传输信号的触点；所述的驱动电路与红外感应识别装置均与触点相连；The bayonet is provided with contacts for obtaining power and transmitting signals; the drive circuit and the infrared induction identification device are connected to the contacts;
第一图像传感器和第二图像传感器分别设置在第一出光口和第二出光口的后方；The first image sensor and the second image sensor are arranged behind the first light outlet and the second light outlet respectively;
第一图像传感器、第二图像传感器、存储器、红外感应识别装置、显示器均与微处理器连接；微处理器还通过驱动电路控制红外发射灯；The first image sensor, the second image sensor, the memory, the infrared induction identification device, and the display are all connected to the microprocessor; the microprocessor also controls the infrared emitting lamp through a driving circuit;
外筒体的前端面设有光照传感器，光照传感器输出信号通过所述的触点与微处理器的信号输入端相连；The front end of the outer cylinder is provided with a light sensor, and the output signal of the light sensor is connected to the signal input end of the microprocessor through the contact;
当微处理器检测到光照传感器输出的光照信号超过预设的阈值时(表明此时光照条件良好)，微处理器通过驱动电路控制红外发射灯处于熄灭状态；并将基于自然光获取的图像反映在显示器上；When the microprocessor detects that the light signal output by the light sensor exceeds the preset threshold (indicating that the light condition is good at this time), the microprocessor controls the infrared emitting lamp to be in the extinguished state through the drive circuit; and reflects the image acquired based on natural light on the on the display;
当微处理器检测到光照传感器输出的光照信号低于预设的阈值时(表明此时光照条件较差)，微处理器通过驱动电路控制红外发射灯开启；并将基于红外光获取的图像反映在显示器上。When the microprocessor detects that the light signal output by the light sensor is lower than the preset threshold (indicating that the light conditions are poor at this time), the microprocessor controls the infrared emission lamp to turn on through the drive circuit; and reflects the image obtained based on the infrared light on the monitor.
若红外感应识别装置感应到现场有人员活动，则输出报警信号到微处理器，If the infrared induction identification device senses that there are personnel activities on the scene, it will output an alarm signal to the microprocessor,
平常状态下不存储视频，接到报警信号后，微处理器开始采集现场的监控视频并存储，以节省存储空间。The video is not stored under normal conditions. After receiving the alarm signal, the microprocessor starts to collect and store the on-site surveillance video to save storage space.
若红外感应识别装置感应到现场有人员活动，则输出报警信号到微处理器，平常状态下采集较320×180或720×480分辨率(低分辨率)的视频并存储，在接到报警信号后，采集1280×720或1920×1080分辨率(高分辨率)的视频并存储，以节省存储空间。If the infrared induction recognition device detects that there are personnel activities on the scene, it will output an alarm signal to the microprocessor. Under normal conditions, the video with a resolution of 320×180 or 720×480 (low resolution) will be collected and stored. After receiving the alarm signal Finally, capture and store videos with a resolution of 1280×720 or 1920×1080 (high resolution) to save storage space.
所述的第一出光口和第二出光口的直径相同。The diameters of the first light outlet and the second light outlet are the same.
第一出光口与进光口的直径相同。The diameter of the first light outlet is the same as that of the light inlet.
所述的红外传感器为热释电红外传感器。The infrared sensor is a pyroelectric infrared sensor.
有益效果：Beneficial effect:
本发明的基于新型监控镜头和双图像传感器的监控方法，其核心是采用了新型的监控镜头和双图像传感器，该镜头采用基于半透反光镜的新技术，再引入一块反射镜，将进入镜头的光线分成2束，使得第二出光口输出的光线用于监控场景内整体的画面(通过透射光路)，该画面为经可见光形成的图像，由于采用了红外截止滤光片，滤除了红外线对成像的影像，其影像效果更佳；而第一出光口输出的光线(为反射光路输出的光线)得到的图像为纯粹的红外图像，而且两组图像尺寸和视野相同，因此无论白天还是晚上都能实现监控，而且监控是可以对照两组画面，监控效果更好。因此这种基于新型监控镜头和双图像传感器的监控方法具备全天候监控的功能。The monitoring method based on the new monitoring lens and dual image sensor of the present invention, its core is to adopt a new type of monitoring lens and dual image sensor, the lens adopts a new technology based on a semi-transparent mirror, and then introduces a reflector, which will enter the lens The light from the second light outlet is divided into two beams, so that the light output from the second light outlet is used to monitor the overall picture in the scene (through the transmission light path). The imaging image has better image effect; while the image obtained by the light output from the first light outlet (the light output by the reflected light path) is a pure infrared image, and the two sets of images have the same size and field of view, so no matter day or night Both monitors can be realized, and the monitoring can be compared with two sets of pictures, and the monitoring effect is better. Therefore, this monitoring method based on the new monitoring lens and dual image sensors has the function of all-weather monitoring.
本发明的镜头还集成有补光光源，即12个红外发射灯，有利于获得更清晰的红外图像。The lens of the present invention is also integrated with supplementary light sources, that is, 12 infrared emitting lamps, which is beneficial to obtain clearer infrared images.
更进一步，外筒体的前端面设有光照传感器，用于检测现场的光照强度，一旦光线较弱，则启动补光光源，因而这种监控系统具备智能性的特征。Furthermore, the front end of the outer cylinder is equipped with a light sensor to detect the light intensity on site. Once the light is weak, the supplementary light source will be activated. Therefore, this monitoring system has the characteristics of intelligence.
红外感应识别系统的作用是监控现场是否存在人员活动，只有在有人员活动的时候，才启动录像或高分辨率录像功能和监控功能，不但节约存储空间而且更具有智能性。The function of the infrared induction recognition system is to monitor whether there are personnel activities on the site. Only when there are personnel activities, the video recording or high-resolution video recording and monitoring functions are started, which not only saves storage space but also is more intelligent.
卡口的设置，用于与其他装置快速连接，卡口为单反相机普遍采用的卡口，为现有成熟技术。卡口上的触点的作用是获得电源，并传输控制信号(如控制光圈的信号以及报警信号等)。The setting of the bayonet is used for fast connection with other devices, and the bayonet is a bayonet commonly used in SLR cameras, which is an existing mature technology. The function of the contacts on the bayonet is to obtain power and transmit control signals (such as signals for controlling the aperture and alarm signals, etc.).
因此，这种基于新型监控镜头和双图像传感器的监控方法构思新颖，设计巧妙，灵活性强，具有自动化和智能化的特征，尤其适用于监控场合。Therefore, this monitoring method based on a new type of monitoring lens and dual image sensors is novel in conception, ingenious in design, strong in flexibility, automatic and intelligent, and is especially suitable for monitoring occasions.
附图说明Description of drawings
图1是本发明的新型监控镜头的总体结构示意图。Fig. 1 is a schematic diagram of the overall structure of the novel monitoring lens of the present invention.
图2是新型监控镜头的后端部结构示意图。Fig. 2 is a schematic diagram of the structure of the rear end of the new surveillance lens.
图3是新型监控镜头的前端部结构示意图。Fig. 3 is a schematic diagram of the structure of the front end of the new surveillance lens.
图4为基于新型监控镜头和双图像传感器的监控方法的总体结构示意图。Fig. 4 is a schematic diagram of the overall structure of the monitoring method based on the new monitoring lens and dual image sensors.
标号说明：1-外筒体，3-半透反光镜，4-反射镜，5-透镜组，6-红外截止滤光片，7-第一出光口，8-第二出光口，9-可见光截止滤光片，10-内筒体，11-红外发射灯，12--红外传感器，13-第一图像传感器，14-第二图像传感器；15-红外感应识别装置。Description of symbols: 1-outer cylinder, 3-semi-transparent mirror, 4-mirror, 5-lens group, 6-infrared cut filter, 7-first light outlet, 8-second light outlet, 9- Visible light cut-off filter, 10-inner cylinder, 11-infrared emitting lamp, 12-infrared sensor, 13-first image sensor, 14-second image sensor; 15-infrared induction identification device.
具体实施方式Detailed ways
以下将结合附图和具体实施例对本发明做进一步详细说明：The present invention will be described in further detail below in conjunction with accompanying drawing and specific embodiment:
实施例1：Example 1:
如图1-4所示，一种基于新型监控镜头和双图像传感器的监控方法，采用监控主机和监控镜头实施监控；As shown in Figure 1-4, a monitoring method based on a new type of monitoring lens and dual image sensors, using a monitoring host and a monitoring lens to implement monitoring;
所述的监控主机中设有微处理器、第一图像传感器(13)、第二图像传感器Described monitoring main frame is provided with microprocessor, the first image sensor (13), the second image sensor
(14)、显示器和存储器；(14), display and memory;
所述的监控镜头包括外筒体(1)、内筒体(10)、镜头卡口(2)、半透反光镜(3)、反射镜(4)、红外感应识别装置(15)、透镜组(5)、红外截止滤光片(6)和可见光截止滤光片(9)；The monitoring lens includes an outer cylinder (1), an inner cylinder (10), a lens bayonet (2), a semi-transparent mirror (3), a mirror (4), an infrared sensing recognition device (15), a lens group (5), infrared cut-off filter (6) and visible light cut-off filter (9);
内筒体设置在外筒体内，且内筒体的轴线与外筒体的轴线平行；The inner cylinder is arranged in the outer cylinder, and the axis of the inner cylinder is parallel to the axis of the outer cylinder;
内筒体的前端开口为进光口，进光口位于外筒体的前端面，外筒体的后端具有2个出光口，2个出光口即第一出光口(7)和第二出光口(8)；透镜组(5)以与内筒体轴线垂直的方式设置在内筒体内；红外截止滤光片(6)和可见光截止滤光片(9)均以与外筒体轴线垂直的方式设置在外筒体内，且透镜组设置在进光口的后方，可见光截止滤光片设置在第一出光口的前方，红外截止滤光片设置在第二出光口的前方；镜头卡口设置在外筒体的后端部；The front opening of the inner cylinder is a light inlet, and the light inlet is located on the front surface of the outer cylinder, and the rear end of the outer cylinder has two light outlets, the two light outlets are the first light outlet (7) and the second light outlet port (8); the lens group (5) is arranged in the inner cylinder in a manner perpendicular to the axis of the inner cylinder; the infrared cut-off filter (6) and the visible light cut-off filter (9) are arranged perpendicular to the axis of the outer cylinder The way is set in the outer cylinder, and the lens group is set behind the light inlet, the visible light cut filter is set in front of the first light exit, and the infrared cut filter is set in front of the second light exit; the lens bayonet is set at the rear end of the outer cylinder;
红外感应识别装置设置在外筒体内，且红外感应识别装置中的红外传感器(12)设置在外筒体的前端部；The infrared induction identification device is arranged in the outer cylinder body, and the infrared sensor (12) in the infrared induction identification device is arranged at the front end of the outer cylinder body;
半透反光镜和反射镜均相对于外筒体的轴线倾斜45°设置在外筒体内，且半透反光镜和反射镜互相平行；半透反光镜和反射镜的儿何中心的连线与外筒体的轴线垂直；Both the semi-transparent mirror and the reflector are arranged in the outer cylinder with an inclination of 45° relative to the axis of the outer cylinder, and the semi-transparent mirror and the reflector are parallel to each other; The axis of the cylinder is vertical;
外部光线从进光口进入后依次透过透镜组、半透反光镜和红外截止滤光片并最终从第二出光口射出形成透射光路；After the external light enters from the light inlet, it passes through the lens group, the semi-transparent mirror and the infrared cut filter in sequence, and finally emits from the second light outlet to form a transmission light path;
外部光线从进光口进入后先透过透镜组、然后经半透反光镜和反射镜两次反射、再透过可见光截止滤光片并最终从第一出光口射出形成反射光路；After the external light enters from the light inlet, it first passes through the lens group, then is reflected twice by the semi-transparent mirror and the reflector, then passes through the visible light cut-off filter, and finally exits from the first light outlet to form a reflected light path;
在进光口的周边设有12个红外发射灯(11)，该12个红外发射灯沿内筒体的周向均匀布置；外筒体内设有红外发射灯的驱动电路；12 infrared emitting lamps (11) are arranged around the light inlet, and the 12 infrared emitting lamps are evenly arranged along the circumference of the inner cylinder; a driving circuit for the infrared emitting lamp is arranged in the outer cylinder;
所述的卡口上设有用于获取电源以及传输信号的触点；所述的驱动电路与红外感应识别装置均与触点相连；The bayonet is provided with contacts for obtaining power and transmitting signals; the drive circuit and the infrared induction identification device are connected to the contacts;
第一图像传感器和第二图像传感器分别设置在第一出光口和第二出光口的后方；The first image sensor and the second image sensor are arranged behind the first light outlet and the second light outlet respectively;
第一图像传感器、第二图像传感器、存储器、红外感应识别装置、显示器均与微处理器连接；微处理器还通过驱动电路控制红外发射灯；The first image sensor, the second image sensor, the memory, the infrared induction identification device, and the display are all connected to the microprocessor; the microprocessor also controls the infrared emitting lamp through a driving circuit;
外筒体的前端面设有光照传感器，光照传感器输出信号通过所述的触点与微处理器的信号输入端相连；The front end of the outer cylinder is provided with a light sensor, and the output signal of the light sensor is connected to the signal input end of the microprocessor through the contact;
当微处理器检测到光照传感器输出的光照信号超过预设的阈值时(表明此时光照条件良好)，微处理器通过驱动电路控制红外发射灯处于熄灭状态；并将基于自然光获取的图像反映在显示器上；When the microprocessor detects that the light signal output by the light sensor exceeds the preset threshold (indicating that the light condition is good at this time), the microprocessor controls the infrared emitting lamp to be in the extinguished state through the drive circuit; and reflects the image acquired based on natural light on the on the display;
当微处理器检测到光照传感器输出的光照信号低于预设的阈值时(表明此时光照条件较差)，微处理器通过驱动电路控制红外发射灯开启；并将基于红外光获取的图像反映在显示器上。When the microprocessor detects that the light signal output by the light sensor is lower than the preset threshold (indicating that the light conditions are poor at this time), the microprocessor controls the infrared emission lamp to turn on through the drive circuit; and reflects the image obtained based on the infrared light on the monitor.
若红外感应识别装置感应到现场有人员活动，则输出报警信号到微处理器，If the infrared induction identification device senses that there are personnel activities on the scene, it will output an alarm signal to the microprocessor,
平常状态下不存储视频，接到报警信号后，微处理器开始采集现场的监控视频并存储，以节省存储空间。The video is not stored under normal conditions. After receiving the alarm signal, the microprocessor starts to collect and store the on-site surveillance video to save storage space.
若红外感应识别装置感应到现场有人员活动，则输出报警信号到微处理器，平常状态下采集较320×180或720×480分辨率(低分辨率)的视频并存储，在接到报警信号后，采集1280×720或1920×1080分辨率(高分辨率)的视频并存储，以节省存储空间。If the infrared induction recognition device detects that there are personnel activities on the scene, it will output an alarm signal to the microprocessor. Under normal conditions, the video with a resolution of 320×180 or 720×480 (low resolution) will be collected and stored. After receiving the alarm signal Finally, capture and store videos with a resolution of 1280×720 or 1920×1080 (high resolution) to save storage space.
所述的第一出光口和第二出光口的直径相同。The diameters of the first light outlet and the second light outlet are the same.
第一出光口与进光口的直径相同。The diameter of the first light outlet is the same as that of the light inlet.
所述的红外传感器为热释电红外传感器。The infrared sensor is a pyroelectric infrared sensor.
说明：illustrate:
红外发射灯作为红外发射光源，具体为采用红外发射LED灯。The infrared emitting lamp is used as an infrared emitting light source, specifically an infrared emitting LED lamp is used.
可见光截止滤光片，全称为截止可见光透过红外光滤光片，是一种能吸收99.5％的可见光，透过90％的近红外光的一种高分子合成塑胶。广泛应用于光电传感器，起到面板美观大方的视觉效果。产品有一定的韧性，可以耐冲击力，不易碎裂，可加工成任意形状，圆形，方形，长条，三角形，梯形，异圆形，花纹，字母，数字，图案等不同形状，价格优惠，质量可靠，应用广泛。Visible light cut-off filter, full name cut-off visible light through infrared light filter, is a polymer synthetic plastic that can absorb 99.5% of visible light and pass through 90% of near-infrared light. Widely used in photoelectric sensors to achieve a beautiful and generous visual effect on the panel. The product has a certain degree of toughness, can withstand impact, is not easy to break, and can be processed into any shape, round, square, long, triangular, trapezoidal, irregular round, pattern, letter, number, pattern and other shapes, the price is favorable , reliable quality and wide application.
红外截止滤光片，筒称IRCF，能实现可见光区(400-630nm)高透，近红外(700-1100nm)截止的光学滤光片，用于消除红外光线对CCD/CMOS成像的影响，通过在成像系统中加入红外截止滤光片，阻挡该部分干扰成像质量的红外光，可以使得形成的影像更佳符合人眼的最佳视觉。Infrared cut-off filter, called IRCF, can achieve high transparency in the visible light region (400-630nm) and cut-off near-infrared (700-1100nm) optical filter. It is used to eliminate the influence of infrared light on CCD/CMOS imaging. Through An infrared cut filter is added to the imaging system to block the part of the infrared light that interferes with the imaging quality, so that the formed image is better in line with the best vision of the human eye.
红外感应识别系统的工作原理说明：Description of the working principle of the infrared induction identification system:
红外感应识别系统所采用的传感器为热释电红外传感器，当现场有相关人员活动，热释电红外传感器在接收到人体红外辐射温度发生变化时就会失去电荷平衡，向外释放电荷，红外感应识别系统中的信号处理电路(为现有成熟技术)经检测处理后就能产生报警信号并经触点输出到与镜头相连的外部电路，外部电路基于该报警电路在启动图像传感器获取当前的视频和图像，实现实时监控。The sensor used in the infrared induction identification system is a pyroelectric infrared sensor. When there are relevant personnel activities on site, the pyroelectric infrared sensor will lose its charge balance when it receives changes in the infrared radiation temperature of the human body, and release charges outward. The signal processing circuit in the identification system (an existing mature technology) can generate an alarm signal after detection and processing, and output it to the external circuit connected to the lens through the contact. and images for real-time monitoring.
红外发射灯的驱动电路为现有成熟技术，由外部电路通过该卡口的触点输出控制信号到驱动电路，控制驱动电路的启动和停止。该控制信号由外部电路的处理器发出，该控制信号与光照传感器的输出信号相关，处理器检测到光照低于某一阈值时，发出控制信号启动驱动电路，打开红外发射灯，否则关闭红外发射灯。The driving circuit of the infrared emitting lamp is an existing mature technology, and an external circuit outputs a control signal to the driving circuit through the contacts of the bayonet to control the start and stop of the driving circuit. The control signal is sent by the processor of the external circuit. The control signal is related to the output signal of the light sensor. When the processor detects that the light is lower than a certain threshold, it sends out a control signal to start the drive circuit, and turns on the infrared emitting light, otherwise turns off the infrared emitting light. lamp.
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