3results about How to "Control work status" patented technology

This invention relates to the field of wind power technology, and more particularly to a heat dissipation system control method, a wind turbine generator set, and a computer-readable storage medium. The method includes: determining the required heat dissipation of the heat dissipation system, and determining the system heat dissipation of the heat dissipation system based on the heat dissipation air temperature, heat dissipation air velocity, and coolant inlet temperature; detecting whether the system heat dissipation meets the required heat dissipation; if the system heat dissipation does not meet the required heat dissipation, adjusting the airflow and air pressure characteristics of the cooling fan in the heat dissipation system, and then returning to the step of detecting whether the system heat dissipation meets the required heat dissipation, until the system heat dissipation meets the required heat dissipation. This invention improves the control accuracy of axial flow fans, thereby enhancing the heat dissipation effect of the wind turbine heat dissipation system.

This invention relates to the field of multi-split air conditioning system technology, specifically to a disturbance control method for the outer loop electronic expansion valve of an air conditioning system. The problem this invention addresses is how to actively eliminate oil and refrigerant blockage and reduce exhaust temperature during defrosting or oil return processes through forced disturbance control of the outer loop electronic expansion valve. To solve this problem, this invention provides a control method comprising: acquiring the operating status parameters of the air conditioning system; determining whether the air conditioning system has triggered a disturbance program based on the status parameters; correcting the reference setting based on the exhaust temperature, compressor return superheat, and oil separator return oil temperature during the execution of the disturbance mode; determining whether to exit the disturbance program based on the exhaust temperature and the execution duration of the disturbance program during defrosting and oil return modes; and automatically exiting the disturbance program when the air conditioning system exits the defrosting or oil return mode.

This utility model discloses an audible and visual alarm device, comprising: a monitoring unit for converting acquired image data into digital signals; a switching unit connected to the monitoring unit to generate a first electrical signal or a second electrical signal; a control unit connected to the switching unit to generate a low-frequency alarm signal based on the first electrical signal; and an alarm unit connected to both the switching unit and the control unit to generate a light signal based on the first electrical signal and a low-frequency buzzer based on the low-frequency alarm signal, or, the alarm unit generating a light signal and a low-frequency buzzer based on the second electrical signal. This utility model controls the warning states of three indicator lights and the operating states of the low-frequency and high-frequency buzzers by controlling the corresponding on / off states of a control relay module, thereby enabling the classification of alarm events based on alarm indications and improving event processing efficiency.