Abstract: A detection assembly is provided. The detection assembly includes: at least one crystal including a first end and a second end oppositely disposed along a first direction. A processing unit provided at the first end of the at least one crystal. An optical partition extending along the first direction is provided within each of the at least one crystal, and the optical partition forms two optical channels extending along the first direction within the crystal. Along the first direction, each of the two optical channels includes a first end and a second end opposite to each other, the first ends of the two optical channels correspond to the first end of the at least one crystal, and the second ends of the two optical channels correspond to the second end of the at least one crystal and are optically connected.

Abstract: A method for transmitting safety message based on vehicular applied to vehicle-vehicle communication comprising a transmitting side and a receiving side. S1, transmitting a wireless access service announcement information in a conventional vehicle environment to the receiving side, the wireless access service announcement information carrying a temporary safety message transmission channel identifier; S2, transmitting the safety message, and when the a control channel interval is analyzed to have remaining transmissible bytes, dividing the safety message into a first segment to which a remaining packet mark is appended and a second segment to which a remaining packet mark is not appended, transmitting the first segment to the receiving side during the control channel interval, and transmitting the second segment to the receiving side during service channel interval; and S3, returning to a conventional message transmission state, and continuing transmitting information.

Abstract: A method for transmitting safety message based on vehicular applied to vehicle-vehicle communication comprising a transmitting side and a receiving side. S1, transmitting a wireless access service announcement information in a conventional vehicle environment to the receiving side, the wireless access service announcement information carrying a temporary safety message transmission channel identifier; S2, transmitting the safety message, and when the a control channel interval is analyzed to have remaining transmissible bytes, dividing the safety message into a first segment to which a remaining packet mark is appended and a second segment to which a remaining packet mark is not appended, transmitting the first segment to the receiving side during the control channel interval, and transmitting the second segment to the receiving side during service channel interval; and S3, returning to a conventional message transmission state, and continuing transmitting information.