51results about How to "Avoid running abnormally" patented technology

The invention relates to the technical field of air conditioners, and discloses an expansion valve control method for an air conditioner. The control method comprises the following steps of periodically obtaining the real-time operation frequency of a compressor of the air conditioner; and controlling an expansion valve to open according to the real-time operation frequencies obtained in the two adjacent periods if the difference between the real-time operation frequencies obtained in the two adjacent periods meets a preset condition set based on the change rate of the operation frequency of the compressor of the air conditioner. According to the technical scheme, the real-time operation frequency of the compressor is periodically detected, and the opening degree of the expansion valve ofthe air conditioner is compensated on the basis of the real-time operation frequency obtained in the two adjacent periods, and thus the situation that the opening degree of the expansion valve of theair conditioner fails to reach the change rate of the operation frequency of the compressor, and consequently the air conditioner malfunctions is avoided.

The invention discloses an application downloading device. The application downloading device comprises a judging module which is used for determining whether a to-be-downloaded application needs to call a camera or not when an application downloading instruction is detected; an obtaining module which is used for obtaining a first camera parameter of the to-be-downloaded application when the to-be-downloaded application needs to call the camera; a comparison module which is used for comparing the obtained first camera parameter with pre-stored second camera parameters of applications of callable terminal cameras; and a performing module which is used for performing an application downloading operation when a second camera parameter matches the first camera parameter. The invention also provides an application downloading method. According to the device and the method, when the application is downloaded, whether the terminal camera is compatible with the to-be-downloaded application or not is judged; the application is downloaded when the terminal camera is compatible with the to-be-downloaded application; and operation anomaly after the application is installed is avoided.

The embodiment of the invention discloses a method and device for identifying an abnormal behavior user. A specific embodiment of the method comprises the steps of obtaining the operation informationof an operation executed on a target application by a user in a preset user set in a target time period; based on the obtained operation information, generating a frequent pattern tree, wherein a pathof the frequent pattern tree is used for indicating an operation sequence executed on the target application by the user in the preset user set in the target time period; and based on the frequent pattern tree, identifying the abnormal behavior users from the preset user set. According to the embodiment, by generating the frequent pattern tree, the abnormal behavior users in the user set are determined based on the operation sequence executed by the users, and the situations that the operation of the target application is abnormal, the abnormal behavior users earn the profits illegally and the like caused by the operations of the abnormal behavior users, are avoided.

The invention discloses an air conditioner, a control method and a control system thereof. Wherein, the method includes: during the heating operation of the air conditioner, detecting the temperature of the indoor evaporator and the temperature of the compressor, judging whether the air conditioner satisfies the defrosting condition, and if yes, controlling the air conditioner to enter the defrosting mode , and judge whether the temperature difference between the temperature of the compressor and the temperature of the indoor evaporator is greater than the preset temperature, if the temperature difference is greater than the preset temperature, the defrosting operation will be performed immediately, if the temperature difference is less than or equal to the preset temperature, then adjust the air conditioner Operating parameters to increase the temperature difference, and when the temperature difference is greater than the preset temperature, the defrosting operation will be delayed for a preset time. The method of the embodiment of the present invention can ensure the normal operation of the defrosting process of the air conditioner, thereby improving the defrosting efficiency.

The invention relates to the technical field of electric matched products, in particular to an energy-saving intelligent filter compensation metering comprehensive protection automatic transmission which comprises a box body. The inside of the box body is provided with an active power filter, a connection electric reactor, an isolation switch, a current transformer and an outgoing breaker. The active power filter is connected to the secondary side of the current transformer of a grid through the connection electric reactor. The upper end of the isolation switch is directly connected with the secondary side of the current transformer of the grid, and the lower end of the isolation switch is connected with the outgoing breaker through the isolation switch in an outgoing mode. According to the automatic transmission, harmonic currents on a bus are eliminated in real time, the operation efficiency of the transformer is improved, operation safety of the transformer and electric equipment is guaranteed, the phenomena of abnormal operation of the transformer, system resonance and compensation capacitor overflowing caused by harmonic currents are avoided, the service life of the equipment is prolonged, and the phenomenon that a capacitance box often fails in the prior art is avoided. The box transformer structure technically has the advantages of being modularized, small in size, attractive in appearance, safe and reliable in operation, convenient to maintain and the like.