37results about How to "Improve after-sales maintenance efficiency" patented technology

The invention discloses an air conditioner fault diagnosis device and a diagnosis method. The fault diagnosis device comprises a connection interface which is connected to the air conditioner, a reading module which is connected to the connection interface and is used for reading the fault information and the usage environment information which are stored in the air conditioner, a display module and a control module which is connected to the reading module and the display module and determines the fault type according to the fault information and the usage environment information and displays the fault type through the display module. The fault diagnosis device can provide the fault-related information, can help the maintenance staff to fast and accurately position the fault, improves the after sale maintenance efficiency, reduces the maintenance time and frequency. The invention also discloses an air conditioner diagnosis method.

The invention relates to the field of air conditioners, in particular to a cabinet air conditioner, which comprises an air conditioner main unit, wherein cross-flow fan blades are vertically arranged in the air conditioner main unit from top to bottom; a motor for driving the cross-flow fan blades to rotate is arranged at the upper ends of the cross-flow fan blades; an air duct cover plate is arranged between the motor and the cross-flow fan blades. According to the cabinet air conditioner, the air duct cover plate, a motor gland, the motor and the cross-flow fan blades are connected together through connecting rods, and are fixedly arranged on an air duct structure on the air conditioner main unit, and when the motor gland and the cross-flow fan blades of the air conditioner are required to be disassembled, the motor and the cross-flow fan blades can be directly extracted from the top of the air conditioner through the motor gland only by disassembling the connecting rods fixed with the air duct structure, so that difficulty in the disassembling of the cross-flow fan blades is lowered, and the after-sales repair efficiency of the air conditioner is improved.

A routing vehicle fault diagnosis and fault overhaul method comprises the fault diagnosis step and the fault overhaul step. The fault diagnosis step comprises the procedures that when a fault code exists, after whether the fault code definitely points to a part or not is judged, diagnosis is conducted and a fault point is determined according to a part diagnosis method or a system diagnosis method respectively; when no fault code exists, a vehicle driving dynamic condition test is conducted to determine the fault point. The fault overhaul step comprises the procedures that the fault point overhaul, the fault code elimination and testing after the overhaul are conducted circularly in sequence, and the overhaul is finished till a result of the testing after overhaul is normal; the fault point overhaul is an arbitrary combination of three kinds of overhaul technology, and the overhaul technology comprises inspection of the conditions of the part related to the fault point, inspection of the conditions of an electric control unit related to the fault point, and calling of the I / O or routine diagnosis function to judge the working performance of the electronic control unit and the part which are related to the fault point. The routing vehicle fault diagnosis and fault overhaul method has the advantages of being high in efficiency of fault diagnosis and fault overhaul, wide in range of application and low in cost.

The invention belongs to the field of motor control, and especially relates to an automatic detection method and system of compressor models. According to the invention, offline parameters obtained by means of offline identification and a preset error function [delta][sigma](n) of parameters of compressors of known models are utilized to calculate the error value of each parameter, and the model of the current compressor is judged through the error values, so that the working efficiency is improved, the accuracy is improved, the present situation of after-sale service of air conditioners is effectively improved, and the after-sale maintenance efficiency of the air conditioners is improved.

The invention discloses a movable and stretchable connecting structure. The connecting structure comprises a unit, an electric appliance box located on one side of the unit, and a folding support, wherein one end of the folding support is connected with the electric appliance box, and the other end of the folding support is connected with the unit. The horizontal distance from the electric appliance box to the unit is adjusted through the folding support. According to the movable and stretchable connecting structure, the horizontal distance from the unit to the electric appliance box is adjusted through folding of the folding support, when parts inside the unit are required to be maintained, the maintenance work can be carried out without detaching the electric appliance box, so that the maintenance efficiency is improved, and the maintenance work is facilitated.

The invention relates to the field of air conditioners, in particular to a cabinet air conditioner, which comprises an air conditioner main unit, wherein cross-flow fan blades are vertically arranged in the air conditioner main unit from top to bottom; a motor for driving the cross-flow fan blades to rotate is arranged at the upper ends of the cross-flow fan blades; an air duct cover plate is arranged between the motor and the cross-flow fan blades. According to the cabinet air conditioner, the air duct cover plate, a motor gland, the motor and the cross-flow fan blades are connected together through connecting rods, and are fixedly arranged on an air duct structure on the air conditioner main unit, and when the motor gland and the cross-flow fan blades of the air conditioner are required to be disassembled, the motor and the cross-flow fan blades can be directly extracted from the top of the air conditioner through the motor gland only by disassembling the connecting rods fixed with the air duct structure, so that difficulty in the disassembling of the cross-flow fan blades is lowered, and the after-sales repair efficiency of the air conditioner is improved.

The present invention relates to the field of PON technology, in particular to a fault detection method for a PON gateway, which is used for a PON gateway with built-in detection software; several detection modules are built in the PON gateway, and the detection software includes the number and the detection A corresponding and independent detection thread of the module; including the following steps: the PON gateway manually or automatically starts the detection thread corresponding to the detection module to be monitored; each of the detection threads corresponds to it according to its own detection process The corresponding detection module performs detection; the detection thread records the detection result according to the judgment result; the detection software generates a complete machine failure analysis report according to the detection result output by each detection thread. The purpose of the present invention is to provide a fault detection method for a PON gateway, and the technical solution provided by the present invention can solve the technical problem that existing PON gateway products cannot realize the automatic fault detection function.

The invention relates to air-conditioner intelligent detection technique, and discloses a method for detecting a four-way valve of an air-conditioner. The method for detecting the four-way valve of the air-conditioner can automatically detect and judge whether the four-way valve is normal or abnormal, and timely displays faults, so that convenience is provided for failure predication and after-sales repair. The method comprises the following steps: judging a work pattern when the air-conditioner is switched on; timing operation time of the air-conditioner when the air-conditioner is operated in a heating or a cooling mode; collecting present working frequency of a compressor when the operation time achieves a preset time threshold value; detecting and calculating a difference value of indoor environment temperature and indoor heat exchanger coil pipe temperature and a difference value of outdoor heat exchanger coil pipe temperature and outer environment temperature according to a specific working mode of the air-conditioner when the present working frequency of the compressor achieves a preset frequency threshold value; and judging the four-way valve is abnormal when setting conditions are met, and carrying out alarm reminding for the failure. The method for detecting the four-way valve of the air-conditioner is suitable for being used for intelligently detecting failure of the four-way valve of the air-conditioner.

The invention discloses an air conditioner control device, an air conditioner and a control device for an intelligent appliance system. The air conditioner control device comprises a center control component. The center control component comprises a mainboard signal receiving module, a center control module and a mainboard signal sending module. The mainboard signal receiving module is used for receiving an air conditioner control signal transmitted in a visible light mode. The center control module is connected with the mainboard signal receiving module and used for analyzing the air conditioner control signal and generating a control command according to the analysis result. The mainboard signal sending module is connected with the center control module and used for generating and sending out a corresponding visible light type control command body according to the control command. The air conditioner control device transmits the air conditioner control signal in a visible light communication mode, and connecting lines arranged in the air conditioner control device are decreased, so that the air conditioner control device is simpler in structure, and the assembly efficiency and the breakdown maintenance efficiency can be improved. In addition, the transmission disturbance resistance of the control signal is high, and the transmission efficiency is high.

The invention discloses a method and a device for opening and closing an automobile tire pressure monitoring system, belonging to the field of automobile electronics. The method includes signally connecting the diagnostic tool with the electronic control unit of the vehicle, and according to the configuration information of the tire pressure monitoring function of the control module, when it is determined that the tire pressure monitoring function of the control module exists and the tire pressure monitoring function of the display module exists, the tire is turned on. When the diagnostic tool modifies the tire pressure monitoring function of the control module to non-existent and the tire pressure monitoring function of the display module to non-existent, the tire pressure monitoring system is turned off to realize the low-end models that are not equipped with the tire pressure monitoring system. After the tire pressure monitoring system is installed, or the tire pressure monitoring system of the high-profile model equipped with the tire pressure monitoring system fails, the tire pressure monitoring system needs to be turned on when after-sales maintenance is required, or the tire pressure monitoring system that the customer needs to temporarily turn off the tire pressure monitoring function is turned off. , to avoid the separate configuration of related modules, improve the efficiency of after-sales maintenance, and meet customer needs.