Optical fiber fault determination method and device, and photovoltaic centrifugal machine equipment
A technology for identifying fiber optic faults, which is applied to electromagnetic wave transmission systems, electrical components, transmission systems, etc., can solve problems such as fiber optic faults that cannot be detected in time, frequency converter faults in units, etc., and achieve the effect of timely and effective detection of fiber optic faults
Active Publication Date: 2019-12-24
GREE ELECTRIC APPLIANCES INC
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[0005] The embodiment of the present invention provides a fiber optic fault determination method, device, and photovoltaic centrifuge equipment to solve the problem that the existing fiber optic fault cannot be found in time, which leads to the fault of the frequency converter in the unit
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[0043] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in further detail below in conjunction with the embodiments and accompanying drawings. Here, the exemplary embodiments and descriptions of the present invention are used to explain the present invention, but not to limit the present invention.
[0044] For the existing optical fiber transmission pulse signal is generally used, the optical fiber is prone to bending during installation, when the optical fiber line is bent too much, the signal is prone to attenuation, when the attenuated pulse signal is used to control the drive board, the frequency converter will An overcurrent or overvoltage fault is reported. Therefore, in this example, a fiber fault determination method is provided, such as figure 1 As shown, the following steps may be included:
[0045] Step 101: receiving a pulse signal with a fixed duty ratio sent by the main boa...
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The invention provides an optical fiber fault determination method and a device, and photovoltaic centrifuge equipment, and the method comprises the steps: receiving a pulse signal with a fixed duty ratio transmitted by a mainboard through an optical fiber; determining whether the duty ratio of the received pulse signal is equal to the fixed duty ratio; and under the condition that the duty ratioof the received pulse signal is not equal to the fixed duty ratio, determining that the optical fiber fails. According to the method, the problem that the existing optical fiber fault cannot be foundin time to cause the frequency converter fault in the unit is solved, and the technical effect of effectively finding the optical fiber fault in time to protect unit equipment is achieved.
Description
technical field [0001] The invention relates to the technical field of equipment control, in particular to a method and device for determining an optical fiber fault, and photovoltaic centrifuge equipment. Background technique [0002] The photovoltaic centrifuge control system is a common high-power controller system. The working principle of the control system is: the pulse signal is sent by the DSP, and the control board amplifies the pulse signal. After the pulse is amplified. Use optical fiber or wire to transmit the control signal to the driver main board, and the IGBT driver board will control the IGBT (Insulated Gate Bipolar Transistor, insulated gate bipolar transistor) module through the signal after receiving the driving signal, so that the IGBT module can work in an orderly manner . [0003] The existing ones generally use optical fiber to transmit pulse signals to complete the signal transmission from the DSP main board to the IGBT driver board. However, in th...
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IPC IPC(8): H04B10/073H04B10/079
CPCH04B10/0731H04B10/0795
Inventor 姜颖异党培育文武
Owner GREE ELECTRIC APPLIANCES INC