478results about How to "Guaranteed working condition" patented technology

The invention discloses a device that can stretch the reflection plane in space, which includes a foldable ring pole, a foldable rib pole and a plurality of connection joints, wherein, every two foldable ring poles (1) are connected by a ring pole connection joint (2) to form a furling and stretching ring structure; every two foldable rib poles (3) form a furling and stretching rib structure by a rib pole connection joint (4); one end of the rib structure is connected with the ring structure by a ring rib connection joint (5) and the other end is connected with a central ribbed tube connection joint (6) to form a whole rigid body; the ring pole connection joint and the rib pole connection joint drives, locks and controls the foldable ring pole to stretch from the vertical furled state to the horizontal stretched state and controls the foldable rib pole to stretch from the vertical furled state to the expected curve proximity state. The invention has low area density, high structural precision and large holding rate and can be used for the ground or space as a reflector or a collector.

The invention discloses a variable-rigidity flexible grabbing device. The variable-rigidity flexible grabbing device comprises two sliding blocks arranged on a linear guideway in a sliding mode, and the sliding blocks are driven by an opening and closing motion motor to do the movement so as to enable the sliding blocks to be close to each other and away from each other; and each sliding block isconnected with a clamping jaw for grabbing operation through a variable-rigidity flexible parallel mechanism, and the variable-rigidity flexible parallel mechanism is driven by a rigidity adjusting motor so as to adjust the rigidity of the variable-rigidity flexible parallel mechanism. In the working state, the parallel clamping displacement of the clamping jaws in the opening and closing movementdirection is controlled through driving of the opening and closing motion motor; and the clamping rigidity of the clamping jaws on the opening and closing movement is controlled through driving of the rigidity adjusting motor. According to the variable-rigidity flexible grabbing device, the clamping rigidity of the grabbing device in the opening and closing movement direction can be continuouslychanged so as to adapt to the clamping operation of objects with different shapes and different masses; and the grapping device can be used as a tail end effector of a robot and is particularly suitable for the fields of operational tasks, precision assembly and the like in the non-structural environment.

The invention discloses a closed loop test method and a system of a ground-electronic-unit lineside electronic unit (LEU). A real LEU and analog devices are combined into the close loop test system to test functions of the LEU. The test method includes the following steps: firstly, original messages (variable) are transmitted to the LEU through an S port by using an analog device (a train control center), and the LEU conducts data programming language (DBPL) encoding to the messages after receiving the messages, secondly, the messages are transmitted to the analog device (an active transponder) through a C port, at last the analog device (the active transponder) decodes received DBPL codes and compares the DBPL codes with the original messages. Therefore, the purpose that closed-loop test functions of the LEU is achieved, and thus a function test of transparent message transmission of the LEU is realized, and normal working condition of the LEU is guaranteed.

The invention discloses an electric power cabinet having dedusting and heat radiation functions. The electric power cabinet comprises a cabinet body and further comprises an air inlet device, an exhaust device and a storage battery, wherein the storage battery is used for supplying power for the air inlet device and the exhaust device, the air inlet device is arranged at a lower portion of one side of the cabinet body and is used for pumping the external air into the cabinet body, and the exhaust device is mounted at the other side of the cabinet body and is used for pumping the air in the cabinet body to realize dedusting and heat radiation. The electric power cabinet is advantaged in that through arranging an air blowing bucket and an air collection bucket which are opposite to each other, the air is quickly convected in the cabinet, heat is efficiently taken away from the inside of the cabinet, heat radiation efficiency is high, the service life of the equipment is prolonged, moreover, dusts in the cabinet are efficiently sucked, the equipment is kept to be clean, the working state of the equipment is guaranteed, the incoming air is filtered through a dust net and sponge blockswhich are arranged, the convective gas is guaranteed to be dry and dust free, and the dust and the moisture are prevented from entering into electrical equipment.

The invention discloses a liquid crystal display and a driving chip thereof. The driving chip comprises a read-only memory, a random access memory and a timing comparison module, wherein a register value is stored in the read-only memory; the random access memory comprises a register set; when the liquid crystal display is powered on, the register value in the read-only memory is written into the register set and is used for controlling the working state of the liquid crystal display; the timing comparison module is used for reading the register value of the read-only memory and the register value of the register set on time and rewriting the register value of the read-only memory into the register set when the difference of the register value of the read-only memory and the register value of the register set is detected so as to guarantee the liquid crystal display maintaining the working state. According to the scheme, the liquid crystal display can effectively reduce the probability of abnormal display of the liquid crystal display caused by electrostatic problem and can enhance the antistatic capacity of the liquid crystal display.

The invention provides a primary side regulation control system and primary side regulation control method of an active clamp flyback converter and belongs to the technical field of primary side regulation control. The system comprises an inductive current sampling circuit, a drain-source voltage sampling circuit, an auxiliary winding voltage sampling circuit, a gate driver, a control circuit witha controller as a core, and a differentiator. The control circuit with the controller as the core comprises a voltage operation module, a current operation module and a constant-voltage constant-current function module. The active clamp flyback converter can accurately predict and calculate the primary sides of output voltage and output current while the working efficiency of the system is ensured, so the accurate primary side constant-voltage constant-current adjustment of the active clamp flyback topology is realized. By adopting the control system, the use of optical couplers and other isolation elements is reduced, the integration level of the system is improved, and very high output voltage precision can be obtained. In addition, the control system can be applied to a primary side resonance active clamping flyback topology and a secondary side resonance active clamping flyback topology.

The invention relates to a method for controlling running of a water-cooled screw-type refrigerating unit. The method includes the following steps: (1), detecting unit running mode, namely detecting the running mode of the refrigerating unit with a backup, and sending an exhaust pressure value of the refrigerating unit during running to a storer after analog-digital conversion; (2), setting exhaust pressure control parameters of a compressor on a touch screen of a PLC (programmable logical controller), sending the pressure control parameters to a PID (proportion integration differentiation) program specified register, and connecting a cooling water pump transducer running terminal; (3), calling a PID subprogram and returning an output value after operation by the PLC, driving a cooling water pump transducer after the PID output value is subjected to analog-digital conversion, driving a cold water unit to run, and feeding exhaust pressure of the cold water unit back to the PLC controller; (4), judging whether cooled incoming water temperature of the cold water unit is larger than a preset value or not, if yes, setting required condensing temperature, and if not, taking the cooled incoming water temperature as pressure control parameters; (5), starting a cooling fan when the incoming water temperature reaches judged temperature.

The invention relates to a reconstruction method of a satellite-borne control computer. The reconstruction method includes the steps of 1, subjecting a FPGA (field programmable gate array) of each computer unit to system partitioning; 2, allowing a surface control center to generate FPGA configuration files of the computer units; 3, allowing the surface control center to transmit the FPGA configuration files to a data management subsystem; 4, allowing the data management subsystem to transmit the FPGA configuration files to a satellite bus; 5, allowing the computer units to perform reconstruction in the on-duty state. The reconstruction method has the advantages that the original central processing unit of the satellite-borne computer is replaced by the SRAM (static random access memory) type FPGAs, a reconstruction control circuit and a reconstruction configuration data storage designed on the original satellite-borne computer are connected to a configuration interface of the SRAM type FPGA, each SRAM type FPGA includes a constructible area and a fixed area, reconstruction of the satellite-borne control computer can be achieved on orbit, the satellite-borne control computer is under control of the surface during an on-orbit phase, and functions are changed in real time through the configuration files injected from uplink.

The invention relates to a state prompting method and device and belongs to the technical field of information. The method comprises the steps that use information of target equipment is obtained, wherein the use information at least comprises the startup and shutdown time of the target equipment all the times; the current wastage of the target equipment is calculated according to the use information of the target equipment; when the wastage reaches a preset wastage prompting threshold value, the current equipment state is prompted. According to the state prompting method and device, the use information at least comprising the startup and shutdown time of the target equipment all the times is obtained, the current wastage of the target equipment is obtained according to the use information of the target equipment, and the current equipment state is prompted when the wastage reaches the preset wastage prompting threshold value. Due to the that that the current wastage of the target equipment is obtained through calculation according to the use information, higher accuracy is achieved compared with the use experience of a user; furthermore, the user is prompted in time when the wastage reaches the preset wastage prompting threshold value, and thus it is ensued that the target equipment is in the normal working state all the time.

The invention relates to a foreign matter removal apparatus for an overload power transmission line, and belongs to the technical field of electric power. The apparatus comprises a supporting frame and a group of cleaning cylinders hinged on the periphery; each cleaning cylinder adopts a two-petal type split structure, and at least two groups of walking mechanisms are arranged in the cleaning cylinders in the direction of the power transmission line; each walking mechanism comprises a pair of walking wheels arranged symmetrically up and down and a first motor; a cleaning mechanism is also arranged in each cleaning cylinder; each cleaning mechanism comprises four brush rollers and a second motor; each brush roller comprises a shaft roller and bristles on the surface thereof; a mounting ringwith an L-shaped cross section is arranged at one end of each cleaning cylinder, and a two-petal-structured graphite ring is arranged in the lower concave position; a cutting mechanism is arranged onthe periphery of the graphite ring; and the cutting mechanism comprises a rotating ring with a driving mechanism and a group of cutters annularly arranged on the outer side. By virtue of the foreignmatter removal apparatus, cutting, drilling and stripping of suspending and covering objects and cleaning of relatively small foreign matters can be realized; and the foreign matter removal effect canbe remarkably improved, and foreign matter removal from the power transmission line can be truly realized.

The invention discloses a method for processing a hardware table entry checking error. The method comprises the following steps of: acquiring the hardware table entry checking error information of a device in a checking information register of the device; judging whether the frequency of address errors in the hardware table entry checking error information exceeds a threshold value in a preset time span according to the hardware table entry checking error information; if so, determining that the device fails; otherwise, determining that the device does not fail; when the device fails, determining an index of error hardware table entries according to the hardware table entry checking error information; and querying corresponding software table entries according to the index of the error hardware table entries, refreshing the error hardware table entries according to the queried software table entries, determining that new hardware table entry checking error information is not recorded in the checking information register of the device in a second preset time span, and maintaining the working condition of the device. By the method, the reliability and maintainability of a system are improved.

The invention relates to a VDMOS (Vertical Double-diffusing Metal-Oxide-Semiconductor) transistor testing structure which belongs to the technical field of semiconductors and comprises a semiconductor substrate, an epitaxial layer, a first source doping region, a second source doping region, a channel region and an interlevel dielectric layer, a metal layer covering the upper surface of the semiconductor substrate and used for leading out two source electrodes and grid electrodes and a back metal layer covering the bottom surface of the semiconductor substrate, wherein the channel region positioned below the source doping region is mutually separated to form double channels, and the source electrode positioned on the surface of the epitaxial layer is mutually cut off to be respectively used as a test source electrode and a test drain electrode. Under the control of the voltage of the grid electrode, the test is carried out by using the test source electrode and the test drain electrode as output electrodes, the invention effectively realizes that the on resistance of the VDMOS transistor is tested, overcomes the difficulty of superficial characteristics after grinding and unifies the test program, thereby further lowering the maintenance and development cost, and improving the product test and feedback efficiency.

The invention discloses an intelligent electric control door lock, comprising an electronic lockset, an unlocking control system and a power source device; a contact part where a lock body contacts with a spring bolt box is provided with a first electric conduction structure; the corresponding part of the spring bolt box is provided with a second electric conduction structure; the power source device is mounted on a door frame and is electrically connected with an external mains supply; the power source device is electrically connected with the first electric conduction structure; the unlocking control system is mounted on a door body, and is electrically connected with the second electric conduction structure; the power source device is electrically connected with the unlocking control system by the contact of the first electric conduction structure and the second electric conduction structure. The intelligent electric control door lock has the beneficial effects that no wire of a whole door leaf is exposed, and the overall attractive appearance of the door body is not affected, and has the advantages that the mounting is simple and easy, and the maintenance is convenient; the phenomenon that a connecting wire of the electronic lockset is abraded along with the rotation of the door body, so that the electronic door lock is short-circuited is avoided.

The invention discloses an improved damping type soft steel arm single-point mooring device which comprises a mooring tower, a mooring arm and a mooring framework. The mooring framework comprises a stern support and a mooring leg which are installed on a mooring platform. The mooring leg comprises an upper casing pipe and a lower casing pipe which can slide relatively. At least one damper is arranged between the upper casing pipe and the lower casing pipe. The mooring leg and the stern support are provided with damping boxes. The two damping boxes are arranged oppositely. By the adoption of the improved damping type soft steel arm single-point mooring device, the tension borne by the mooring leg in an extreme tensioning state is effectively reduced, the acting force borne on the joints of all structural components is reduced, a damping lock is arranged between the outer wall of the upper casing pipe and the outer wall of the lower casing pipe, the working state of the damper can be selected according to the actual working sea condition, and the relative speed of the stern support and the mooring leg can be reduced through the pressure reduction of the damping boxes, so that the relative speed of a stern and a water ballast tank can be reduced, and the huge acting force generated in the extreme collision process is reduced.

The invention relates to a sealing and cutting device of a film packaging machine. The device comprises a fixing rack. The device is characterized in that a fixing plate is mounted on the fixing rack, and a guide rod is arranged on the fixing plate; an upper knife holder and a lower knife holder are both connected with the guide rod, the upper knife holder or the lower knife holder can perform vertical lifting motion on the guide rod, or the upper knife holder and the lower knife holder can both perform vertical lifting motion on the guide rod; an upper cylinder is connected with the upper knife holder to operate and a lower cylinder is connected with the lower knife holder to operate. When the device is adopted, the upper knife holder and the lower knife holder perform vertical lifting motion on the guide rod, so that even if objects in a film package are not consistent with the motion of the knife holders, the objects can be reset in time, the situation that the upper knife holder and the lower knife holder block the objects in the film package is avoided, the operating state is continuously kept, and the purpose of improving the production efficiency is achieved.

The invention discloses a heat insulation method for a top combustion type silicon brick hot-blast stove. Each heat insulation operation procedure of the heat insulation method comprises the following operation steps: burning, banking, blasting and burning again; all the heat insulation operation procedures are circularly performed in sequence; when the temperature of the arch of the hot-blast stove drops to 900 DEG C, burning is started, and a combustion-supporting air combustion valve, a gas shut-off valve and an air and gas regulating valve are opened to adjust the volume of gas to 40000 to 55000 m3/h, the gas pressure to 6 to 10 kpa, the combustion-supporting air pressure to 4 to 5 kpa, and the ratio of the combustion-supporting air flow rate to the volume of gas to 0.6 to 0.7; after the temperature of the arch at the upper part of the hot-blast stove is burnt to 1350 DEG C, the burning is stopped, and banking operation is performed; when the temperature of the arch of the hot-blast stove drops to 900 DEG C, blasting is started, a manhole at the lower part of the hot-blast stove is opened, and air is sent to the hot-blast stove with the reference that the increasing rate of the arch temperature is 1 DEG C/min; and when the temperature of silicon bricks drops to 900 DEG C, air supply is stopped, and the manhole, a hot blast valve and a backflow blowing-down valve are closed; and burning is repeated, and the cycle is conducted sequentially.

The invention discloses an intelligent brake comprising two brake arms with brake linings. The brake arms are hinged on a base, and a brake spring component and a pusher are sequentially arranged on the base on one side of a first brake arm. The upper end of the brake spring component and the upper end of the pusher are both hinged on a lever, and the other end of the lever is respectively hinged with the first brake arm and a pull rod through different hinged shafts. One end of the pull rod is hinged with a second brake arm, and the pull rod is arranged on the lever through an automatic compensation device. The automatic compensation device is used for adjusting abrasion gaps after friction pieces are abraded. The intelligent brake is further provided with a lining follow-up device, an equal-distance retreat device and an ultimate-limit abrasion alarm switch. The low-temperature constant pusher, the automatic compensation device for a moving ratchet and a fixed ratchet, the lining follow-up device, the equal-distance retreat device and the ultimate-limit abrasion alarm switch are combined to work together, so that the intelligent brake can be guaranteed to be kept in a normal operation condition.