49results about How to "Good for long-distance transmission" patented technology

The invention relates to a novel wavelength division multiplexing demultiplexing optical assembly applied to high-speed parallel long-distance transmission. The output end of a laser group is sequentially provided with a lens group, an optical regulating plate group, a lower layer silicon lens array and a lower layer optical filter group, wherein the output end of the lower layer optical filter group is provided with a lower layer free space wavelength division multiplexing device, the output end of the lower layer free space wavelength division multiplexing device is provided with an optical isolator, the output end of the optical isolator is provided with a focusing lens, the output end of the focusing lens is connected with an input optical fiber, an output optical fiber is connected with a collimating lens, the output end of the collimating lens is connected with a prism, the output end of the prism is provided with an upper layer free space wavelength division multiplexing device, the output end of the upper layer free space wavelength division multiplexing device is provided with the upper layer optical filter group, the output end of the upper layer optical fiber group is provided with an upper layer silicon lens array, and the output end of the upper layer silicon lens array is provided with a detector group. The optical signal multiplexing and demultiplexing is realized by using the optical filter array structure.

The invention discloses a transmission tower network communication method and system. The method includes: using wireless frequency hopping technology to broadcast a network reorganization instruction, and the network reorganization instruction includes a first address; receiving several information collection terminals according to the first address; The address adopts the registration request returned by wireless frequency hopping technology; according to the registration request returned by each information collection terminal received and the preset communication time, a communication timing segmentation table is established; according to the communication timing segmentation table, wireless frequency hopping technology is used to send data transmission instructions ; Receiving the returned data, the data is sent by the information collection terminal receiving the data sending instruction using wireless frequency hopping technology. The invention adopts the frequency hopping communication technology for efficient data transmission, and solves the influence of transmission line electromagnetic interference on field data transmission; the frequency hopping communication technology has strong remote communication capability and fast data transmission, and better achieves the on-site operation status of the transmission tower monitor.

The invention discloses a digital level sensor, which comprises a shell, wherein a circuit system, a suspension swinging component, a hydraulic micro displacement amplifying component and parallel light sources are arranged in the shell; the suspension swinging component comprises a swinging hammer, a T-shaped push rod and a swinging hammer revolving shaft; the swinging hammer is movably connected with the swinging hammer revolving shaft through the T-shaped push rod. The sensor is characterized in that digital signals are output, each sensing element outputs signals in the forms of switch pulses, and sampled data are only '0' and '1', so that the defect of fuzzy components in the conventional analog quantity detection way is overcome, the influences of various environment distribution parameters such as temperature, air pressure intensity, electric fields and magnetic fields are avoided, and the accuracy and reliability of detection are increased. Moreover, the digital level sensor is very high in resolution and accuracy, simple in structure and low in cost.

The invention relates to a 40G 40km CFP optical module comprising an optical receiving unit, an optical emitting unit, a digital diagnosis unit, a power supply unit and a 148 PIN electrical interface unit. The power supply unit is respectively connected with the optical receiving unit, the optical emitting unit, the digital diagnosis unit and the 148 PIN electrical interface unit and used for providing power input; the optical receiving unit is connected with the digital diagnosis unit and used for providing optical detection signals; the optical emitting unit is connected with the digital diagnosis unit and used for providing optical detection signals; the optical receiving unit is connected with the 148 PIN electrical interface unit and used for converting input optical signals to electric signals to be output; the optical emitting unit is connected with the 148 PIN electrical interface unit and used for converting the input electric signals to the optical signals to be output; and the digital diagnosis unit is connected with the 148 PIN electrical interface unit and used for providing digital diagnosis signals to remote communication equipment. The optical module has the function of high-speed photoelectric conversion, has high integration level and stable performance, and is helpful for remote transmission of signals.