45results about How to "Grasp the working status in time" patented technology

The invention discloses a failure analysis and exhibition method of a power generator excitation system. The failure analysis and exhibition method comprises the following steps of: 1, on the basis of failure analysis and induction, establishing a power generator excitation system failure tree; 2, classifying failure signals of the failure tree obtained in the step 1 according to the severity orders of the failures; 3, determining the priority of signal processing according to the severity orders of the failures in accordance with the failure signal classifying in the step 2, and locating a failure source; 4, exhibiting a diagnosis result in the step 3 on the failure tree by using different modes according to different types of the failures in accordance with the correspondence of the diagnosis result in the step 3 to the failure tree of the power generation excitation system, wherein the failure tree is established in the step 1; and 5, establishing an expert knowledge base. According to the invention, the timeliness of the failure diagnosis of the power generation excitation system can be increased, abnormal information is subjected to high-level analysis, the failure source is finally located, a simple and visual failure display interface is provided for a worker, and the maintenance time can be greatly reduced.

The invention provides a method and terminal for controlling a cooking tool through a terminal. According to the method and terminal, a communication terminal which is interacted with the terminal is arranged on the cooking tool. The method for controlling the cooking tool through the terminal comprises the following steps: establishing a connection between the terminal and the communication module; receiving a cooking instruction from a user, and generating a command file for controlling the cooking tool according to the cooking instruction; sending the command file to the communication module to control the cooking tool to work according to the command data included in the command file. According to the technical scheme, the method and terminal have the advantages that the cooking functions of the cooking tool can be effectively increased to meet the demand of people of different living habits, and therefore, the use experience of the user can be improve; meanwhile, the service life of the cooking tool can be prolonged.

The invention discloses an intelligentized high-low-pressure lubrication device, which is characterized by comprising an oil tank, wherein the oil tank is connected with an oil outlet pipeline and an oil return pipeline; a control cabinet of a control system for controlling the working of an electric component on the oil outlet pipeline is fixedly arranged on the oil tank, and a touch type display screen is arranged on the control cabinet of the control system; the oil outlet pipeline comprises a NO.1 low-pressure pump and a NO.2 low-pressure pump which are connected in parallel, a filter is arranged behind the pumps which are connected in parallel, an oil cooler is arranged between the filter and an oil outlet, a NO.3 high-pressure pump and a NO.4 high-pressure pump which are connected in parallel are connected behind the cooler, and the oil tank is connected with an oil return port connected with an oil return pipeline; a safety valve channel is connected in parallel with two screw pumps which are connected in parallel; a heater is arranged in the oil tank; an electromagnetic water valve is arranged on a cooling water channel of the oil cooler. The intelligentized high-low-pressure lubrication device has a reasonable structure, a lubrication tank body structure and an electric control tank body structure are integrated as a whole, the structure is more compact and the use is convenient; by adopting the electric control device with the touch type display screen, the working state of the controlled component can be mastered in time; and the working performance of the control system is excellent.

The invention provides an online monitoring and early warning system of a transformer substation oil-immersed transformer. Parameter information of an oil-immersed transformer, an AC/DC power supply screen and an oil switch is monitored through a transformer monitoring device, a voltage signal collecting circuit and an oil switch monitoring device respectively, and communication control connection with a computer is carried out through an MCU controller, so that the integral running state of the oil-immersed transformer system is conveniently controlled in time. The online monitoring and early warning system of the transformer substation oil-immersed transformer has the advantages of being scientific in design, safe, efficient, simple, convenient, economical and practical.

The invention discloses a blood purification system capable of being remotely monitored, comprising blood purification equipment which consists of a blood path system, a liquid path system and a monitoring system, wherein the monitoring system is provided with a detection unit, a central controller and a drive unit. The blood purification system is characterized in that the central controller is accessed to a common network by an Ethernet network interface and then connected with a remote monitoring center. The invention has remarkable advantages of not only retaining all function of the complete appliance of the traditional blood purification equipment, but also accessing the blood purification equipment in the common network; and a remote monitoring center is used for monitoring the blood purification system on line in real time, which not only can grasp the working state of the blood purification equipment in time and enable monitors of the equipment to provide reliable maintenance guarantee in time, but also can record the change conditions of various physiological parameters of patients in the treatment process so as to be convenient for medical technologists to carry out remote on-line consultation.

The invention discloses an intelligent local loosing and rotating and even straw covering corn planter, and belongs to the technical field of agricultural mechanical devices. The corn planter comprises a vehicle body, a straw collecting mechanism, a local loosening and rotating mechanism, a sowing and fertilizer applying mechanism, a soil covering mechanism, a straw scattering mechanism and a compacting mechanism. The straw collecting mechanism comprises a collecting and smashing assembly and a pressure detecting assembly. The pressure detecting assembly is installed on the collecting and smashing assembly. The sowing and fertilizer applying mechanism comprises a fertilizer applying assembly, a sowing assembly and a plurality of grating sensors. A plurality of cameras are arranged at the lower end of the soil covering mechanism. A hydraulic system is arranged on the vehicle body. A cab is arranged at the front end of the vehicle body. A controller and a displayer are arranged in the cab. The vehicle body can also be an existing tractor. The intelligence of the corn planter is improved, the straw collecting mechanism and the sowing and fertilizer applying mechanism can be automatically monitored, the working state of the corn planter can be monitored in time, the corn planter is prevented from being damaged, the straw return-to-field effect is better, and the growth of corn is facilitated.

The invention relates to the field of aircraft engines, in particular to a monitoring structure and method for aircraft engine oil. The monitoring structure comprises shells, insulating casing pipes, fusible pieces, gaskets, sealing rings, insulating linings, check rings, electrodes, a magnet and outer linings. A third pin of a cable plug is connected to the magnet, and a second pin of the cable plug is connected to the corresponding outer lining. The magnet is fixed in the outer linings. The outer linings and the insulating casing pipes which are connected with the outer linings are connected with the shells. The fusible pieces, the gaskets, the sealing rings, the insulating linings and the electrodes are installed in the outer linings and outside the magnet in sequence from inside to outside. The fusible pieces, the gaskets, the sealing rings, the insulating linings and the electrodes are fixed through the check rings in electrode clamping ring grooves. According to the monitoring structure and method for the aircraft engine oil, due to the fact that magnetic poles and the fusible pieces are arranged, the temperature of magnetic metal chips in oil liquid and the temperature of the oil liquid are monitored at the same time, and the monitoring structure can be in lap joint with an online detection system to be applied to monitoring of oil of key parts of engines of various types .

The invention relates to a precise air-conditioner remote control system based on the Ethernet. The remote control system comprises an air-conditioner, an air-conditioner remote control module, a machine room monitoring system, a short message alarming module and a mobile phone. Control nodes and an internal collection control unit are installed in the air-conditioner, liquid crystal display is achieved, the control nodes and the internal collection control unit in the air-conditioner are connected with the air-conditioner remote control module connected with the a machine room system, and the machine room monitoring system is connected with the short message alarming module which is connected with the mobile phone of a professional in a short message communication mode. According to the system, work states of remote equipment can be mastered in time, measurement and control can be carried out on the remote equipment at any time, operation is easy and convenient, what is needed is to connect relative signal wires, the system is convenient to set and can be set through the mobile phone or computer software, and the system has functions of prewarning, remote control, remote measurement and the like and can effectively guarantee normal operation of the equipment.

The invention discloses an intelligent PEBB modular structure for a wind power converter. The intelligent PEBB modular structure for the wind power converter comprises three IGBT modules, three drive circuits, three current-sharing inductor groups, three current sensors, a direct-current voltage sensor, a direct-current supporting capacitor, a direct-current side capacitor, an auxiliary power supply and a bottom layer control panel, wherein each current-sharing inductor group comprises three current-sharing inductors. According to the intelligent PEBB modular structure for the wind power converter, on the basis of modularization, the bottom layer intelligent control function is achieved, the power level of the converter is improved, the maintenance process is simplified, the on-line intelligent diagnosis function is also achieved by the wind power converter, and therefore workers can grasp the working condition of modules which are connected in parallel in time. The invention further discloses a mutual parallel connection structure of a plurality of intelligent PEBB modular structures, wherein the mutual parallel connection structure is suitable for double-fed converters with different power demands and full-power converters with different power demands. In addition, the invention discloses an appearance structure of the intelligent PEBB modular structure; in this way, the modular size is reduced, cost is reduced, and practicability is improved.

The invention provides a universal mill double-row tapered roller bearing play adjusting method. A heated vertical roller is lifted onto an outer ring of a lower-row bearing; then, an outer ring of an upper-row bearing is mounted on the vertical roller; after the temperature of the vertical roller is lowered, an oil seal is mounted in the vertical roller, an inner ring of the lower-row bearing and an inner ring of the upper-row bearing are mounted on the vertical roller in sequence, and the vertical roller uniformly rotates; an original radial gap value x of the bearings and an original gap value y between the inner ring of the lower-row bearing and the inner ring of the upper-row bearing are respectively measured by a feeler gauge, a thickness h of adjusting washers of the outer ring of the lower-row bearing and the outer ring of the upper-row bearing is calculated according to a formula, the inner ring of the lower-row bearing and the inner ring of the upper-row bearing are lifted out from the vertical roller, and after the machined washers are mounted, the inner ring of the upper-row bearing is mounted in the vertical roller again. The method can effectively prolong the service life of the bearings, reduces the machine stop accidents, decreases the spare part consumption and the production cost, relieves the labor intensity of workers, and greatly improves the mill operability while improving the labor productivity.

The invention discloses a monitoring device for a wind driven generator. The monitoring device comprises a wind driven generator controller, a wind speed sensor, a wind direction sensor, a humidity sensor, and a GSM network, wherein the wind speed sensor is electrically connected with one input terminal of a first comparator through an analog-digital converter; the other input terminal of the first comparator is a wind speed threshold input terminal; the wind direction sensor is electrically connected with one one input terminal of a second comparator through an analog-digital converter; the other input terminal of the second comparator is a wind direction threshold input terminal; the humidity sensor is electrically connected with one input terminal of a third comparator through an analog-digital converter; the other input terminal of the third comparator is a humidity threshold input terminal; an output terminal of the first comparator, an output terminal of the second comparator and an output terminal of the third comparator are all electrically connected with a signal input terminal of the GSM network; and a signal communication terminal of the GSM network is electrically connected with a signal input terminal of the wind driven generator controller.

The invention discloses a rectifier three-phase power supply-based variable-frequency governor, which comprises a detection module, a control module, a human-computer interaction module, a three-phase power supply, a phase-shifting transformer and a five-level inverter, wherein the three-phase power supply, the phase-shifting transformer and the five-level inverter are sequentially connected with one another; output ends of the three-phase power supply, the phase-shifting transformer and the five-level inverter are connected with an input end of the detection module; the output end of the detection module is connected with the input end of the control module; the output end of the control module is connected with the input ends of the human-computer interaction module and the five-level inverter; the rectifier three-phase power supply-based variable-frequency governor can carry out real-time monitoring on parameters of a voltage, a frequency, a fault and the like of a motor in a frequency converter, timely grasp the working state of the frequency converter and can timely take corresponding measures to ensure normal operation of the frequency converter according to the parameter change condition.

The invention discloses a braking force control method and device. The method comprises the following steps: adjusting common pre-control pressure and emergency pre-control pressure according to a pressure set value, a common pre-control pressure actual value, an emergency pre-control pressure actual value and air charging, air exhausting or pressure maintaining of a common pre-control branch and an emergency pre-control branch in an adjustable pressure adjusting precision control pressure adjusting module; obtaining the actual output force of the braking system according to the train braking total demand force, the train load and the impulse rate; and converting the actual output force of the braking system into brake cylinder pressure according to the adjusted common pre-control pressure or emergency pre-control pressure, and then realizing urban rail train braking force control. According to the method, the impulse applied by the braking force can be adjusted through cooperation of the software program and the pressure adjusting module, and the comfort of passengers taking the urban rail train is guaranteed.

The invention discloses a system for remotely monitoring state information of a switch in real time and an implementation method. Belonging to the technical field of network switching, the technical problem to be solved by the invention is how to realize remote real-time monitoring of information such as the port state and the port flow of a switch in a machine room. Timely discovery of switch state anomalies, the real-time performance and convenience of switch management are improved; reducing manpower cost, the adopted technical scheme is as follows: the method comprises the following steps:preparing raw materials; the system comprises a far-end data machine room and a far-end monitoring computer, a switch is arranged in the far-end data machine room, the switch is connected with the far-end monitoring computer, an upper computer software unit is arranged in the far-end monitoring computer, and the upper computer software unit is in data communication with the switch through an SNMPnetwork management protocol; and the upper computer software unit polls and sends an instruction to the switch and processes, analyzes and graphs the response data of the switch so as to obtain the state information of the switch in real time.

The invention relates to an intelligent office supply access system and a storage and taking method. The intelligent office supply access system comprises an intelligent management platform, and a first use terminal and a second use terminal which are in communication connection with the intelligent management platform, the system also comprises multiple groups of intelligent cabinets installed atdifferent places. Each group of intelligent cabinets comprise a plurality of cabinet bodies with different sizes; and each group of intelligent cabinets are in communication connection with the intelligent management platform. The storage and taking method is set based on an the office supply intelligent system. According to the invention, intelligent storage of the intelligent cabinets is achieved, the space utilization rate of the intelligent cabinets and the convenience of office supply storage are greatly improved, the intelligent cabinets can be reasonably arranged and distributed according to needs so as to meet the requirement for storage of various office supplies with different sizes and different consuming frequencies, and intelligent consuming of all categories of office supplies is achieved.

An oxygenerator monitoring system comprises a control device, a data collection and feedback device and an output device which are electrically connected with an oxygenerator. The oxygenerator monitoring system is characterized in that the data collection and feedback device and the output device are electrically connected with the control device, and the data collection and feedback device is connected with the oxygenerator to detect needed parameters. By the oxygenerator monitoring system, working condition of each key node of the oxygenerator can be known timely, and working abnormality ofa certain part of the oxygenerator can be timely detected, so that targeted maintenance can be performed at the part. After adopting the oxygenerator monitoring system, running state of the oxygenerator can be monitored remotely in real time, and a powerful technical guarantee can be provided for stable running of the oxygenerator.

The invention discloses a preshrinking machine with a Modbus frequency conversion speed regulation system. Multiple preshrinking machines are connected with a control center via the Modbus protocol; each preshrinking machine is provided with a frequency conversion speed regulator; the frequency conversion speed regulator comprises a detection module, a control module, a man-machine interaction module, a three-phase power supply, a phase-shift transformer and a five-level inverter; the three-phase power supply, the phase-shift transformer, the five-level inverter and the preshrinking machine are successively connected; all the three-phase power supply, the phase-shift transformer, the five-level inverter and the preshrinking machine are connected with the detection module; the detection module, the control module and the man-machine interaction module are connected successively; and the control module is connected with the detection module, the man-machine interaction module and the five-level inverter. Parameters including the voltage, frequency and fault of a motor in a frequency converter can be monitored in real time, the working state of the frequency converter is mastered timely, and measures can be adopted timely according to change of the parameters to ensure normal operation of the frequency converter.

The invention relates to the technical field of supervision and control systems, and discloses a sewage plant supervision and control system, which comprises a video monitoring subsystem, a process instrument monitoring subsystem, a water quality monitoring subsystem and a purification subsystem, and is characterized in that the video monitoring subsystem monitors the working conditions of sewage plant workers in real time; a camera in the video monitoring subsystem is connected with a video server, the video server is connected with a local area network switch, the local area network switch exchanges data, the local area network switch is connected with the video monitoring server through an optical fiber or a wireless channel, and the video monitoring server is connected with the video monitoring client; according to the invention, the improved supervision control system effectively improves the supervision means and measures for sewage treatment, can avoid the phenomenon that sewage is discharged into a river due to improper treatment, and enables a leader to master the operation of sewage plant equipment and the working conditions of workers in time, thereby improving the supervision level.

The invention discloses a variable-frequency speed regulator based on a three-phase power supply. The variable-frequency speed regulator comprises a detection module, a control module, a human-machine interaction module, the three-phase power supply, a phase-shifting transformer, a five-level inverter. The three-phase power supply, the phase-shifting transformer, and the five-level inverter are connected successively. The output end of the three-phase power supply, the output end of the phase-shifting transformer, the output end of the five-level inverter are connected with the input ends of the detection module. The output end of the detection module is connected with the input end of the control module. The output end of the control module is connected with the input end of the human-machine interaction module and the input end of the five-level inverter. The variable-frequency speed regulator may monitor parameters, such as voltage, frequency, faults and the like, of a motor inside a frequency converter in real time, timely knows the operating state of the frequency converter, and may timely take corresponding measures according to a parameter change to guarantee the normal operation of the frequency converter.