Abstract: A system for providing road condition information includes a first outdoor lamp and a first camera. The first camera is disposed on the first outdoor lamp and configured to: capture an image of a surrounding of a location where the first camera is located; perform an image recognition process on the image to identify an event occurring in the surrounding; generate, based on the event, a first road condition message including location information of the event and event information of the event; and broadcast the first road condition message to a first vehicle.

Abstract: A positioning method including following steps is provided. Firstly, several base stations are commanded to detect a tracked object. Then, a first position of the tracked object is obtained according to the first return information. Then, several fixed-type signal transceivers are selected according to the first position. Then, the selected fixed-type signal transceivers are commanded to detect the tracked object, and a second position of the tracked object is obtained according to the second return information received from the fixed-type signal transceivers.

Abstract: A system for providing road condition information includes a first outdoor lamp and a first camera. The first camera is disposed on the first outdoor lamp and configured to: capture an image of a surrounding of a location where the first camera is located; perform an image recognition process on the image to identify an event occurring in the surrounding; generate, based on the event, a first road condition message including location information of the event and event information of the event; and broadcast the first road condition message to a first vehicle.

Abstract: A wireless access device is configured to be electrically connected to a lighting device that communicates with a server. The wireless access device includes a connecting base. The connecting base includes an electrical connection interface, which is configured to be directly and electrically connected to the lighting device and to receive electric power from the lighting device. The wireless access device is configured to communicate with the server through the electrical connection interface and to receive the electric power from the lighting device through the electrical connection interface.

Abstract: A positioning method including following steps is provided. Firstly, several base stations are commanded to detect a tracked object. Then, a first position of the tracked object is obtained according to the first return information. Then, several fixed-type signal transceivers are selected according to the first position. Then, the selected fixed-type signal transceivers are commanded to detect the tracked object, and a second position of the tracked object is obtained according to the second return information received from the fixed-type signal transceivers.

Abstract: A connector includes an insulated housing, four connecting terminals, three pins and a plug. The insulated housing has a containing space and a disposing surface, and the disposing surface is located in the containing space. The connecting terminals are separately disposed in the containing space of the insulated housing and located on the disposing surface. The pins are separately disposed in the containing space of the insulated housing and extend from the disposing surface toward a direction away from the disposing surface, and the connecting terminals surround the pins. The plug is disposed in a center of the containing space of the insulated housing and located on the disposing surface. The plug is beneficial to rotate and has no directionality. The plug includes a plurality of conductive rings, the conductive rings are separately arranged along the direction away from the disposing surface, and the pins surround the plug.

Abstract: A light guide plate, a backlight module and a liquid crystal display are provided. The light guide plate has a first surface at least having one first structure and one second structure formed thereon. The first structure and the second structure are adjacent arranged and are mirror reflection with each other. Each of the first structure and the second structure has a first protrusion having a cross section of eccentric triangle.

Abstract: A light guide plate, a backlight module and a liquid crystal display are provided. The light guide plate has a first surface at least having one first structure and one second structure formed thereon. The first structure and the second structure are adjacent arranged and are mirror reflection with each other. Each of the first structure and the second structure has a first protrusion having a cross section of eccentric triangle.