4 results about "Brightness induction" patented technology

The utility model relates to a lighting device for dairy cows and a light source control system. The lighting device comprises a base unit, an installation unit, a first lighting unit, a second lighting unit, a heat dissipation unit, a protection unit, a control unit and a brightness sensing unit. The mounting unit is arranged at the side part of the base unit; the first lighting unit is arranged in the base unit; the second lighting unit is arranged in the base unit; the heat dissipation unit is arranged on the outer side of the base unit; the protection unit is detachably arranged at the bottom of the base unit; the control unit is connected with the first lighting unit and the second lighting unit. The brightness sensing unit is arranged on the outer side of the base unit and connected with the control unit. The illumination device has the advantages that by arranging the first illumination unit and the second illumination unit, the illumination requirements of dairy cows in different illumination environments can be met, and the problems that due to the fact that the brightness of an existing dairy cow feeding light source is fixed, energy consumption is high, and dairy cows are prone to stress are solved.

The application discloses a bright operation detector with an explosion-proof function, which comprises a main body, the first end and the second end of the main body are both open, the first end of the main body is provided with an end cover, the second end of the main body is provided with a transparent cover, the end cover is detachably and sealingly connected with the first end of the main body, the transparent cover is detachably and sealingly connected with the second end of the main body, a closed space is formed between the main body and the end cover and the transparent cover, a brightness sensor and a motion sensor are arranged in the space, the brightness sensor and the motion sensor are connected with the main body through a buffer, the brightness sensor is used for detecting brightness data, and the motion sensor is used for detecting motion data; the device can better protect the internal electronic elements, has a better explosion-proof effect, and is suitable for use in the coal mine, petroleum and petrochemical industries.

The utility model discloses a display module camera shooting hole light leakage detection system, which comprises a display module, a lightening jig, a support frame and a brightness detection module, and the display module is provided with a camera shooting hole; the display module is placed on the lightening jig, the lightening jig is used for positioning the display module, the display module is further electrically connected with the lightening jig, and the lightening jig is further used for lightening the display module; the supporting frame is arranged on one side of the lightening jig; the brightness detection module is arranged on the supporting frame, the brightness detection module comprises an isolation lens cone and a brightness induction piece, one end of the isolation lens cone covers the camera shooting hole, the brightness induction piece is arranged at the other end of the isolation lens cone, and the brightness induction piece is used for conducting lighting induction on light in the isolation lens cone; and the lightening jig is electrically connected with the brightness induction piece, so that the brightness induction piece feeds back the detection structure to the lightening jig. Therefore, the detection can be visualized and fast, the test effect and accuracy are improved, and the problem of missing detection is avoided.

This invention provides a control device for a supplementary light. Based on this application, the control device utilizes a signal sampling circuit to sample a brightness sensing component, obtaining a sampling voltage signal representing the ambient brightness. Furthermore, it can generate a switching logic signal to indicate the start or stop of the supplementary light's LED module by comparing the sampling voltage signal with a threshold voltage. In addition, the control device includes a hysteresis control circuit. This hysteresis circuit adjusts the adjustable resistance value upon which the signal sampling circuit generates the sampling voltage signal based on the switching logic signal. This suppresses the voltage increment of the sampling voltage signal caused by the supplementary light brightness when the LED module starts up, thereby creating a hysteresis constraint to suppress supplementary light brightness interference during the switching process from start to stop of the LED module. This, in turn, suppresses flickering of the supplementary light when the ambient brightness changes.