The invention relates to a multi-rate error code detection device and a detection method thereof, comprising a user terminal, a control module, a detection module, a crystal oscillator module, a clockmodule, a Serdes module, a liquid crystal display module and an optical module. The user terminal is configured to send an operation instruction to the detection module through the control module. The crystal oscillator module is matched with the clock module to generate a first reference clock or an Nth reference clock. The detection module is used for starting the system initialization according to the first reference clock, the system starts the first working mode by default, and carries out the first error code test or the Nth error code test according to the operation instruction, and sends the corresponding pseudorandom code sequence to the optical module; the detection module is used for starting the system initialization according to the first reference clock, and the system starts the first working mode by default. The optical module is used for receiving the pseudorandom code sequence and sending the running result to the detection module after running. The invention has theadvantages of low hardware cost, simple operation and high error code detection efficiency, and can be used for error code detection of optical communication products with multiple speeds, thereby reducing the production cost.

A multi-rate error code detection device and a detection method thereof

The invention relates to the technical field of optics, and provides an intelligent optical marker, an optical branching device and a PON network monitoring system The intelligent optical marker comprises a plurality of optical fiber cores, a fiber bragg grating is arranged on each optical fiber core, and only specific monitoring lights and specific communication service lights are allowed to pass through the fiber bragg grating of each optical fiber core By means of the intelligent optical marker, the optical branching device and the PON network monitoring system, the state information of each branch in a PON network can be detected in real time

Intelligent optical marker, optical branching device and PON network monitoring system

The invention discloses a method and a system for detecting switching event of the electric appliance. The method comprises the following steps: obtaining a to-be-detected total power sequence of theelectric appliance collected in time sequence; establishing the first time window and the second time window immediately following the first time window, wherein the capacity of the first time windowand the second time window are both odd; carrying out data filling on the left side and the right side of the total power sequence to be detected; sliding the first time window and the second time window from the center of the first time window aligned with the first data of the total power sequence until the center of the first time window is aligned with the last data of the total power sequence, and carrying out chi-square test of the data in the first time window and the data in the second time window every time sliding the step of a data, so as to determine whether the switching event occurs at each data in the total power sequence. According to the method and the system, the influence of noise on detection precision can be effectively avoided, and the detection accuracy is improved.

Method and system for detecting switching event of electric appliance

The invention discloses an electric appliance switch event detection method and a system. The method comprises the following steps: obtaining the optimal length of time window obtained by training thepower sequence of the marked switching events by using a first-order linear regression function and a Kriging interpolation method; acquiring a total power sequence to be detected collected in chronological order; establishing a first time window and a second time window immediately following the first time window, both lengths of the time windows being optimal lengths of the time windows; the left and right sides of the total power sequence to be detected being filled with data; sliding two time windows from the center of the first time window aligned with the first data of the total power sequence, until the center of the first time window is aligned with the last data of the total power sequence, the data within the two time windows are subjected to a chi-square test for each step of sliding one data to determine whether a switching event occurs at each data in the total power sequence. The method and the system of the invention can effectively avoid the influence of noise on the detection accuracy and improve the detection accuracy.

A method and system for detecting an electrical switch event

The invention discloses an optical fiber network supervisory system which comprises reflection-type filters with different reflection wavelengths, an intelligent optical branching device and an intelligent spectral analysis comparison device. The reflection-type filters are used for achieving the characteristic that different branches in an optical network have different reflection absorption spectrums with different wavelengths, the intelligent optical branching device is formed on an optical waveguide branch of an optical branching device through a reflected wave leakage structure, and the intelligent spectral analysis comparison device is used for monitoring and controlling the optical network and located at a local side. The optical fiber network supervisory system overcomes the shortages that a fault point is inaccurate in positioning, a network state cannot be obtained in real time, and maintenance and operating cost is large in the prior art, and therefore the optical fiber network supervisory system has the advantages of being accurate in fault point positioning, capable of obtaining the network state in real time and low in maintenance and operating cost.

Optical fiber network supervisory system

The invention discloses a testing method for a communication comprehensive test terminal, and belongs to the field of electronic equipment. The method comprises a cable operation and maintenance test method, a light power meter and red light source test method and an RFID (Radio Frequency Identification) card reading method, wherein the cable operation and maintenance test method comprises an xDSL test method, an Internet test method, a network layer test method, an E-traffic service test method, a download speed measurement method, an FTP client side upload and download data method, and an equipment SN code arrangement method; the light power meter and red light source test method comprises a light power measurement method and a red light source test method. According to the method, as all test projects are centralized in a menu according to a test program, the test is convenient.

Testing method for communication comprehensive test terminal

The utility model provides an intelligent optical marker, an optical splitter and a PON network monitoring system. The intelligent optical marker includes a plurality of optical fiber cores, each fiber core is provided with a fiber grating, and the fiber grating of each fiber core only allows the special monitoring light and special communication traffic light to pass through. In the embodiment of the utility model, the state information of each branch of the PON network can be detected at the real time.

Intelligent optical marker, optical splitter and PON network monitoring system

The invention discloses a comprehensive communication testing terminal. The terminal comprises a face shell; a touch screen is arranged on the outer side of the face shell; an LCD is arranged on the inner side of the face shell; a mainboard for driving the LCD and the touch screen and processing collected information is arranged behind the LCD; an optical power detection module for detecting optical powder, a DSL testing module for testing the DSL and an RFID identification module for management are arranged behind the mainboard; as the optical power detection module, the DSL testing module and the RFID identification module are electrically connected with the mainboard, respectively, the purposes of flexible combination of different functional modules, convenience in assembly and easy structure maintenance are achieved.

Comprehensive communication testing terminal

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Testing method for communication comprehensive test terminal

Intelligent optical marker, optical branching device and PON network monitoring system

Intelligent optical marker, optical splitter and PON network monitoring system

Comprehensive communication testing terminal