148results about How to "Reduce maintenance burden" patented technology

High friction and radar attenuating coating formulations are provided and include a resin matrix, a particulate friction additive dispersed in the resin matrix in an amount sufficient to achieve a minimum coefficient of friction according to MIL-PRF-24667B(SH), and a particulate dielectric filler dispersed in the resin matrix in an amount sufficient to achieve a permitivitty (∈′) of less than about 10 and a loss tangent (tan δ) of less than about 0.05. A substrate surface may be coated with the coating formulation so as to provide a topcoat layer thereon. The topcoat layer may thus be applied directly onto the substrate surface. Alternatively, the coating formulation is present as a topcoat layer component of a coating system on the substrate which further comprises an intermediate layer interposed between the topcoat layer and a surface of the substrate and / or a primer layer coated directly onto the surface of a substrate between the topcoat layer and the substrate. In some embodiments, the coating formulation is applied so as to form a series of substantially parallel ridges having a predetermined directional orientation. In certain preferred embodiments, the coating formulation is applied to a block area on the substrate surface comprised of plural areal regions, wherein the directional orientation of the substantially parallel ridges of one areal region are angularly biased with respect to the directional orientation of the substantially parallel ridges of an adjacent areal region.

A DNS server receives from a receiving email system, a DNS query for an email domain stored at the DNS server, the DNS query including identifying information of a sender of an email. The DNS server extracts the identifying information of the email sender from the DNS query and identifies one of a plurality of delivering organizations from the information. The DNS server determines whether the identified delivering organization is authorized to deliver email on behalf of the email domain. In response to determining that the identified delivering organization is authorized to deliver email on behalf of the email domain, the DNS server generates a target validation record based on the identity of the authorized delivering organization and the email domain, the target validation record including one or more rules indicating to the receiving email system whether the delivering organization is an authorized sender of email for the email domain.

The present invention provides a recovery method using extendible hashing-based cluster logs in a shared-nothing spatial database cluster, which eliminates the duplication of cluster logs required for cluster recovery in a shared-nothing database cluster, so that recovery time is decreased, thus allowing the shared-nothing spatial database cluster system to continuously provide stable service. In the recovery method, if a failure occurs in a predetermined node, a second node in a group, including the node, records cluster logs in main memory on the basis of extendible hashing. If the node that has failed recovers itself using a local log, the second node in the group transmits cluster logs in packets to a recovery node that is the failed node. If the recovery node reflects the received cluster logs and maintains consistency with other nodes in the group, the recovery node resumes normal service.

Provided are a particulate matter filtering device with an automatic cleaning function and a control method thereof. The particulate matter filtering device with the automatic cleaning function comprises a spraying device, an electromagnetic vibrator, a filtering screen assembly, an air quality sensor, a control center, a water receiving tray, a water drainage hole and a water drainage pipe. The control center is in electric control connection with the spraying device, the electromagnetic vibrator and the air quality sensor. By means of the improvement on the structure, the cleaning problem of an air conditioner unit or the filtering screen assembly of the air purification device is solved, users or after-sales maintenance personnel do not need to manually clean away dust on the air conditioner unit or the filtering screen assembly of the air purification device, the particulate matter filtering device can automatically remove the dust on the filtering screen assembly and discharge the dust out of the room, therefore, the maintenance burden of the users is reduced, and indoor air is kept clean. In addition, the dust on the filtering screen assembly can be removed automatically so that decrease of the air volume and the refrigerating and heating efficiency of the air conditioner can be prevented. The particulate matter filtering device with the automatic cleaning function can be widely applied to all kinds of air conditioner units and air purification devices and has a wide application range.

A wireless device includes an imaging unit having an optical axis which is identical to a radio wave direction of a directional antenna, a reference image is stored in a storage unit, a wireless communication device serving as a communication counterpart and an area around the wireless communication device are photographed at regular intervals, and a control unit compares images photographed at regular intervals with a reference image, calculates a degree of similarity through normalized cross-correlation which is hardly influenced by a change in brightness, calculates an index value indicating a state of a region serving as a monitoring target based on a degree of weighted similarity, detects an abnormality when the index value is a specific numerical value or less, and outputs alert information including the photographed image when a state in which the abnormality is detected is continued for a certain period of time.

The invention discloses a communication method of automatic control equipment based on upper and lower computer structures. A template data processing module is arranged in an upper computer system. A query / response mechanism general communication method processing module is arranged in the lower computer system. The template data processing module dynamically generates query / response protocol general communication data in accordance with template data according to a parameter set to external equipment by a user and downloads the general communication data to the lower computer system. The query / response mechanism general communication method processing module reads the general communication data of the corresponding equipment when it is needed, analyzes the data, communicates with the external equipment and returns the received response data to the upper computer system. By using the method of the invention, supports to the new equipment and the new communication protocol can be realized under the condition that system software is not updated so that software updating and maintenance costs after the new equipment is added are greatly reduced, an automatic control mode is flexible and is convenient for capacity expanding.

The invention discloses a data transmission method and data transmission equipment. The method comprises the following steps that: access controller (AC) equipment judges whether a keep-alive message from access point (AP) equipment is received or not; if the keep-alive message from the access point (AP) equipment is received, the AC equipment determines that a controlling and provisioning of wireless access point (CAPWAP) tunnel is normal and acquires a Session ID corresponding to the AP equipment from the keep-alive message; and the AC equipment maintains the information of the CAPWAP tunnel for the AP equipment according to the session ID. The method and the equipment can adapt to different network address translation (NAT) environments and lighten network maintenance burden.

The invention discloses a remote automatic upgrading method for digital monitoring equipment. The method comprises the following two parts: the digital monitoring equipment upgrades a client program, and the central server upgrades a service program. The method comprises the following specific steps: after the monitoring equipment is started, transmitting an inquiry request to a central management server at regular intervals; when the port of the central server monitors that the monitoring equipment requires the inquiry request, upgrading the service program and transmitting the information of the corresponding software to the monitoring equipment; after the monitoring equipment receives the information, comparing the information with the locally stored information; and when the comparison result indicates that upgrading is allowable, requiring the central server to download a corresponding file, covering the file and rebooting the system. The invention has the advantages of simple layout and maintenance, high efficiency and flexibility, can use the mode of regular detection by using the digital monitoring equipment, and does not need too complicated manual intervention.

The invention relates to a building ecological heat-insulation mortar and a preparation method of the heat-insulation mortar, belonging to the technical field of buildings heat-insulation mortar materials. The preparation method mainly comprises the steps of organically combining phase change material, material for regulating environment humidity and adsorbing harmful gas, and foaming heat-insulation inorganic cementing material, and fully building an ecological environment of human and buildings. The raw materials are cheap and easily available, thus being conducive to waste recovery, environment friendliness and energy conservation. The product is convenient to produce, package, store, transport and construct. Heat-insulation inner wall mortar, heat-insulation outer wall mortar, heat-insulation building mortar, heat-insulation floor heating mortar and heat-insulation wall pouring mortar can be prepared by regulating different formulas. The construction modes include manual scraping, pouring and mechanical spraying.

In a screw compressor for a refrigerator, suction-side rotor shafts of screw rotors are supported rotatably by angular ball bearings for forward thrust load, an annular gap is formed between the angular ball bearings and a suction-side bearing casing, and outermost end faces of outer rings of the angular ball bearings are pressed through a spring member by means of a presser member fixed to an end face of the suction-side bearing casing, whereby the angular ball bearings are held movably in the thrust direction within the suction-side bearing casing. Discharge-side rotor shafts of the screw rotors are supported rotatably by angular ball bearings for forward thrust load and an angular ball bearing for reverse thrust load which are held at predetermined certain positions within a discharge-side bearing casing. A screw compressor which permits structural simplification, reduction of size, and lightening of a maintenance burden is provided.

The present invention relates to a telecommunications service provision manager that is configured to allow access to a plurality of telecommunications services to determine the location of a service and control execution of that service.

The present invention relates to a telecommunications service provision manager that is configured to allow access to a plurality of telecommunications services to determine the location of a service and control execution of that service.

In a screw compressor for a refrigerator, suction-side rotor shafts of screw rotors are supported rotatably by angular ball bearings for forward thrust load, an annular gap is formed between the angular ball bearings and a suction-side bearing casing, and outermost end faces of outer rings of the angular ball bearings are pressed through a spring member by means of a presser member fixed to an end face of the suction-side bearing casing, whereby the angular ball bearings are held movably in the thrust direction within the suction-side bearing casing. Discharge-side rotor shafts of the screw rotors are supported rotatably by angular ball bearings for forward thrust load and an angular ball bearing for reverse thrust load which are held at predetermined certain positions within a discharge-side bearing casing. A screw compressor which permits structural simplification, reduction of size, and lightening of a maintenance burden is provided.

A molding machine includes a control part incorporating a specific server program and a memory part saving internal data of the molding machine. The specific server program transmits the internal data, which is converted into a predetermined format and stored in the memory part, to a network.

The invention discloses an automatic mode switching system and an automatic mode switching method for a multifunctional video classroom. Various video resources such as audio and video recorded by standardized electronic examination rooms, security video monitoring in a campus, classroom records and video conferences can be fused to form an integrated streaming media resource system. Meanwhile, system mode switching service can be provided for a user terminal, different system modes can be switched according to time and actual requirements, so that a big video resource pool is formed; different types of streaming media information is provided according to requirements of different time, different scenes and different functions, so that the reusability of front-end equipment is greatly improved, one machine has multiple purposes, the cost is reduced, and the working efficiency of users is improved. Moreover, the system can provide rich external interfaces, can meet specific service applications of different user terminals through customized development, is really close to the campus and the users, and meets education and teaching requirements of education integration and multifunctional fusion applications.

A network system automatically distributes management information to allow immediate monitoring. In the network system, the DHCP server of a network-information management server assigns information to a network-information management table when receiving an assignment request of IP information and network management information from a client. The DHCP client of the client obtains the IP information and the network management information from the DHCP server. The SNMP agent of the client reports to a monitoring server that the network management information has been set. The SNMP manager of the monitoring server determines that the network management information has been set, the monitoring control section of the monitoring server records information of the client in a monitoring control table, and starts monitoring the client.

The present invention provides a recovery method using extendible hashing-based cluster logs in a shared-nothing spatial database cluster, which eliminates the duplication of cluster logs required for cluster recovery in a shared-nothing database cluster, so that recovery time is decreased, thus allowing the shared-nothing spatial database cluster system to continuously provide stable service. In the recovery method, if a failure occurs in a predetermined node, a second node in a group, including the node, records cluster logs in main memory on the basis of extendible hashing. If the node that has failed recovers itself using a local log, the second node in the group transmits cluster logs in packets to a recovery node that is the failed node. If the recovery node reflects the received cluster logs and maintains consistency with other nodes in the group, the recovery node resumes normal service.

The invention relates to an RFID-based MODF construction method and a network management system thereof. The method includes the following steps that 1) a radio frequency electronic label is in physical association with the port in an MODF tray support and an optical fiber jumper; 2) an MODF frame is created, a reconstruction process is started, and the radio frequency electronic label and the radio frequency electronic label data are bonded to the port; 3) on-site verification is performed; 4) an optical fiber jumper is set; 5) a work order construction scene is set; 6) equipment maintenance is performed; 7) an inspection scene is set; and 8) an MODF summary is carried out. The network management system includes a personnel management module, a main optical fiber distribution frame building module, a construction engineering management module, a radio frequency chip label management module, a work list management module, an operation management module, a report function module, and a log management module. The RFID-based MODF construction method facilitates the reconstruction and maintenance of stock, and prevents construction personnel from extra burden. The network management system can meet the functional needs and the non-functional needs, is accordant with the practicality principle, meets the need of multiplexing, and improves the work efficiency of development personnel to a large extent.

Maintenance requirements are reduced by using only a subset of the functions of a media processing device having plural function units for processing processed media. When a control unit of the media processing device receives a command from a host computer to disable a function of an inkjet printer unit disposed to a conveyance path for the processed media or to disable a function of a contact image sensor unit disposed to the conveyance path, a function-disabled mode is entered that disables the specified function. While in the function-disabled mode, detected operating errors related to the disabled function are not reported to the host computer.

A closed type cable or the like protection and guide device that reduces noise generation due to the generation of sliding contact sound during operation prevents entry of fine chips and wear powders of metal into the cable or the like protection and guide device. Scattering of contact wear powders, which are generated by sliding contact between components of the cable or the like protection and guide device, into the operation space can be prevented and a maintenance of the device is reduced. A cable or the like is included in a flexible support to be protected and guided from a fixed end side mounting member toward a movable end side mounting member and the entire outer surface of the flexible support except for an inlet and an outlet of the cable or the like is covered with a heat resistant tubular cloth cover.

The invention relates to an electrifying, charging and discharging equipment for a portable photoelectric instrument, which comprises parts including a DC / AC inverter circuit, a first rectification filter circuit, a passive PFC (Power Factor Correction) circuit, a DC / DC conversion circuit, a PWM (pulse-width modulation) circuit, a second rectification filter circuit, an electrifying circuit, a singlechip control circuit, an operation display circuit, a discharge circuit, a protection circuit and the like. The portable electrifying, charging and discharging equipment for the photoelectric instrument is mainly used for the electrifying maintenance to various portable photoelectric instruments, and charging and discharging to nickel cadmium batteries, nickel-hydrogen batteries and lithium batteries used together with the photoelectric instruments, can organically integrate the main functions of stabilized voltage supplies and charging equipment, and integrates the functions of electrifying, battery charging and discharging and the like of the instruments. Therefore, the integration degree of support equipment for the portable photoelectric instruments is greatly improved.

An ECU detects various conditions of a home fuel gas refining system before starting operation of the home fuel gas refining system using pressure sensors and temperature sensors. Then, it is determined whether the detected conditions are abnormal or not. If abnormal conditions are determined, a self-repair process is performed for a predetermined abnormal condition among the conditions determined as abnormal.

The invention provides an aircraft fuel system comprising a fuel storage facility for storing fuel and ullage, a separate ullage storage facility for storing ullage, and a transfer arrangement for transferring ullage between the fuel storage facility and the ullage storage facility, wherein the transfer arrangement is capable of controlling the transfer of ullage based on a pressure input to the transfer arrangement. The invention also provides an aircraft with such a fuel system and a method of operating an aircraft.

The invention discloses an auxiliary electric motor special for wind power.The auxiliary electric motor comprises a rotating shaft, a bearing, an external bearing cover, an end cover and an internal bearing cover; the bearing is installed on the rotating shaft in a sleeving mode, the internal bearing cover and the external bearing cover are arranged on the inner side and the outer side of the bearing respectively, and the end cover is installed on the external circle of the bearing in a sleeving mode; a grease storage space containing a grease adding channel and a grease discharging channel is formed by the external bearing cover, the end cover and the internal bearing cover in an enclosing mode.The invention further discloses a bearing grease adding method of the auxiliary electric motor special for the wind power.When lubricating grease is initially loaded and the lubricating grease is added again in a wind field, grease adding is conducted when the electric motor rotates.The invention further discloses a wind power unit containing the auxiliary electric motor special for the wind power.By means of the auxiliary electric motor special for the wind power, the bearing grease adding method of the electric motor and the wind power unit, the use requirements of the wind-power auxiliary electric motor on the long guarantee period and high reliability are guaranteed, the special use requirement in the wind field is met, and the auxiliary electric motor special for the wind power is suitable for application and popularization.

The welding state detecting and transmitting device 40 is provided with a secondary battery 60 for accumulating power to be supplied to components within the device 40, a charging circuit 58 that utilizes a portion of the welding current to charge the secondary battery 60. A toroidal coil 42 is used for charging the secondary battery 60 with welding current. The troidal coil 42 is attached to secondary side conductor 32 and connected with the charging circuit 58. The device 40 wirelessly transmits data relating to the welding current detected by the toroidal coil 46. The device 40 substantially reduces the burden of maintenance of the device 40 required in prior art such as replacing a primary battery or recharging a rechargeable battery periodically.

The invention discloses an electrical automation teaching simulation control cabinet. The control cabinet comprises a box body, a display device, a heat dissipation device and a dustproof device. Theupper end of the box body is provided with the display device. The right side of the box body is provided with the heat dissipation device. The left side of the box body is provided with the dustproofdevice. The two sides of the inner bottom end of the box body are symmetrically provided with chute tracks. Slide blocks are slidably connected into the chutes of the chute tracks. The upper ends ofthe slide blocks are fixedly connected to the two sides of the bottom surface of a drawer. The structure of the electrical automation teaching simulation control cabinet is simple, and the control cabinet is convenient to move and use so that great convenience is brought for a user; according to a usage demand, through the display device, the multi-angle display of a teaching content is realized;through the heat dissipation device and the dustproof device, the high efficiency heat dissipation and the strict dustproof performance of the device are guaranteed; and the operation efficiency of the device is increased, the service life of the device is ensured, a personnel maintenance burden is mitigated, and the usage efficiency of the teaching control cabinet is increased.

The invention discloses an intelligent monitoring platform for a high-voltage cable terminal. The intelligent monitoring platform comprises a monitoring box, a dampproof structure, a supporting structure, a fixing structure, a surface temperature detection device, an anti-fracture structure, a solar power generation structure and a heat dissipation structure. The intelligent monitoring platform for the high-voltage cable terminal is convenient to install and can be fixed firmly; the normal operation of equipment can be guaranteed through solar power generation, and therefore, the voltage change, electric leakage and surface temperature of the high-voltage cable terminal can be monitored in real time; flickering early warning can be performed for abnormal data; remote transmission and sharing can be realized; great convenience is brought to the use of users; moisture absorption, moistureproofness and good heat dissipation can be achieved for the monitoring box; the heat dissipation structure plays a role of rainwater pouring prevention protection; the breakage and wire fracture of a wire outlet which are caused by the repeated folding of a cable can be avoided; the cable can be stably supported and fixed; influence on monitoring quality caused by the falling-off and deviation of the cable can be prevented; the maintenance burden of personnel is relieved; and monitoring quality is guaranteed.

The invention provides a device and method based on LDAP (lightweight directory access protocol) user authorization management, which are applied to a server of an application system interacting with an LDAP server. The device comprises the following processing flows of A. setting the synchronized directory range of an LDAP; B, synchronizing organization units in the synchronized directory range of the LDAP into the application system, and synchronizing users in the organization units into each group corresponding to the organization units in the application system; and C, authorizing functions on the groups in the application system. By adopting the technical scheme, the problem of large workload of administrators of the application system of the prior art is effectively solved, and the experience of a user is improved.

The invention discloses a business service system of Internet large-scale application environment and a working method thereof and belongs to the field of distributed technology. The system comprises a server and a client, wherein the server is provided with a business logic interpreter, a business logic and business data; the client is provided with a business logic interpreter; and the server and the client are connected by a network. The method comprises that: firstly, the server receives a business request of the client and transmits the business logic and business data to the client according to the request; and secondly, the server establishes a dynamic cluster according to the business service type of the client and performs the state maintenance and business transaction managementof the dynamic cluster through multicast. The method reduces investment in Internet-based business server computing resources and realizes large-scale business computing at the same time. The system is low in maintenance cost and has personalized characteristics.

A humidity control device includes a first adsorption element (81) and a second adsorption element (82). A first filter (301) is provided under the first adsorption element (81), while a second filter (302) is provided under the second adsorption element (82). The humidity control device performs first operation and second operation alternately. Directions of air flowing through the respective filters (301, 302) are reversed between the first operation and the second operation. Reversal of the direction of the air flowing through each filter (301, 302) removes dust and the like from each filter (301, 302).