367results about How to "No malfunction" patented technology

The invention provides a battery box locking mechanism, a battery box and a manipulator. The battery box locking mechanism comprises a turntable rotating around a rotating shaft and telescoping mechanisms articulated with articulating parts, wherein the articulating parts which are far away from the rotating shaft at a certain distance are arranged on the turntable; and each telescoping mechanism comprises a connecting rod with a first end articulated with each articulating part, and a lock rod articulated with a second end of each connecting rod, and the articulating parts and the telescoping mechanisms are symmetrically arranged with one another by taking the rotating shaft as the center. The battery box locking mechanism of the invention is high in reliability by adopting a mechanical lock mode, so that the misoperation can be avoided; and the dead point position of the two telescoping mechanisms has the self-locking performance, so that the locking reliability of a mechanical lock can be guaranteed, and the inner box of the battery can be prevented from throwing off effectively. Meanwhile, not only can the automatic unlocking and locking be carried out by the manipulator, but also the manual unlocking and locking can be carried out by manual operation, so that the invention is higher in practical applicability, and the battery reloading work efficiency can be preferably improved.

The invention provides a device and a method for data transmission during underground integrated communication, and belongs to the field of petrochemical industry. According to the invention, triggering and information transmission of a PLC (Programmable Logic Controller) are achieved by using an RFID (Radio Frequency Identification Device) technology. An RFID reader / writer is embedded under an oil well; and double-way control and data communication between the RFID reader / writer and a valve control PLC are achieved; when the PLC is required to execute an action, an RFID passive electronic label containing an operating instruction is put from a wellhead; and when the RFID passive electronic label passes through the RFID reader / writer, the RFID reader / writer is used for reading the operating instruction and transmitting the operating instruction to the PLC to execute corresponding operation, so as to operate an underground intelligent water distributor. Through the adoption of the data transmission device and method provided by the invention, cable investment can be greatly saved, the reliability is greatly enhanced and long-time continuous working is guaranteed because an energy saving mode is obtained; according to the invention, false actions can be avoided through the adoption of multiple safety measures; according to the invention, through customizing and packaging, the used electronic label can be used for bearing severe underground working environments; and according to the invention, history data local storage and post analysis functions are supported; and according to the invention, the accuracy and reliability are enhanced when the labor cost is reduced.

Negative sequence voltage and current is calculated from phase voltage and phase current of leading out end at high voltage side of reactor. Based on the calculated value of negative sequence voltage and current, steps of determining short circuit between turns is as follows: when short circuit fault between turns occurs, direction of negative sequence power is determined from phase relation between negative sequence voltage and current; determining whether short circuit fault between turns occurs inside district or outside district. The method increases action sensitivity of protection components, and cancels out characteristics of impedance compensation used in traditional protection in homopolar power direction. The invention protects reactor, determines earth fault, and guarantees not false operation. Theoretical analysis and emulation test prove correctness and validity of the new theory for protecting turns of reactor.

The invention discloses a locomotive AC train power supply system and a power supply control method thereof, relates to the train power supply technology, and provides a locomotive AC train power supply system and a power supply control method thereof aiming at the defect in the prior art that the power energy demand is not ensured when a train breaks down. The technical points of the invention are that: a control signal input terminal, a microcomputer, a rotating speed sensor, and a train power supply cabinet are additionally installed based on an existing diesel engine, and an AV auxiliary generator for locomotive AC auxiliary transmission; the microcomputer is in signal connection with all of the control signal input terminal, the rotating speed sensor, the AV auxiliary generator, a diesel engine throttle control terminal, and the train power supply cabinet; the AV auxiliary generator supplies power to the train power supply cabinet, and a AC power supply output terminal of the train power supply cabinet is used to supply power to the train; the microcomputer adjusts the size of the output voltage of the AV auxiliary generator according to a rotating speed signal of the diesel engine outputted by the rotating speed sensor so as to ensure that the train power supply cabinet outputs stable 380 V three-phase AC power for the train.

The invention provides a processing method and system for communication flash breakdown of a wind driven generator. The processing method comprises the following steps that a variable-pitch controllerreceives a generator rotating speed value sent by a main controller through a first communication line; when the variable-pitch controller is used for determining that communication flash breakdown is generated on a second communication line between the variable-pitch controller and the main controller, a pitch adjustment control command is generated according to the rotation speed value of the generator, and pitch adjustment control is carried out according to the pitch adjustment control command. According to the processing method and system, when communication flash breakdown is generatedon the second communication line between the variable-pitch controller and the main controller, the variable-pitch controller is ensured to receive the accurate generator rotating speed value, pitch adjustment control is continued so that the communication flash breakdown crossing function can be realized in a guaranteed mode, furthermore, a wind generating set is prevented from being stopped, malfunctions of a variable-pitch system are avoided, the generating capacity of the wind driven generator is guaranteed, the wind driven generator is prevented from being stopped due to frequent failures, and the utilization rate of the wind driven generator is improved.

The invention discloses a walking control device of a paver, which comprises a processor, a conversion module, a detection speed pulse frequency module, a switching quantity input module, a pulse width modulation module, a switching quantity output module, a pressure sensor, a potentiometer, a speed sensor, a switch, an electromagnetic valve and a proportional electromagnetic valve. The invention further provides a control method for the walking control device of the paver. The control structure is simple, the operation is reliable, the deviation amount of walking of the paver can be effectively controlled, the control effect is better, and the walking deviation performance and the construction quality of the paver are further improved.

The invention discloses a shared memory based method for realizing multiprocess GPU (Graphics Processing Unit) sharing, aiming to solve the problem that multiple processes of an SPMD (Single Program Multiple Data) program on a single heterogeneous computing node cannot share the GPU. In a technical scheme, the method comprises the steps: a GPU server side is started and waits for the arrival of request signals of a GPU client side; the GPU client side is started and sends request signals to the GPU server side when GPU acceleration is needed; and GPU server side responds to the request signalwhich is received at first, performing accelerated computing by using a GPU, and simultaneously executes a computing process of a CPU (Central Processing Unit). In a GPU computing process, the request signals from the GPU client side enters a signal queue in an operating system for queuing; and after GPU computing is completed, the GPU sever side responds to other request signals in the signal queue. On the single heterogeneous computing node containing one GPU, the method in the invention can be used to ensure that operation faults cannot be generated when a plurality of processes, in need of GPU acceleration, of the SPMD program run, and the GPU can be shared by the plurality of processes.

The invention relates to a double-air source selection valve, which comprises a valve body (1). The double-air source selection valve is characterized in that: a valve chamber (9) of the valve body (1) is provided with a high heat value fuel-gas inlet bin (10) and a lower heat value fuel-gas inlet bin (11), wherein the high heat value fuel-gas inlet bin (10) and the lower heat value fuel-gas inlet bin (11) are provided with gas outlets communicated with the valve chamber (9), and the insides of both are respectively provided with a sealing washer (12) which can block the corresponding gas outlet; the two sealing washers (12) are simultaneously and fixedly arranged on a driving rod (13); the driving rod (13) is connected with a turn-knob rod (15) of a main body arranged in the valve chamber (9) through a driving device (14); one end of the turn-knob rod (15) extends out of the valve chamber (9) and is provided with a turn knob (17); the other end of the turn-knob rod (15) positioned in the valve chamber (9) is connected with a valve core (16); and one end of the valve core (16) extending out of the valve body (1) is provided with a double-air source nozzle (18). The double-air source selection valve has the advantages of simple structure and small volume.

The invention discloses a longitudinal impedance-based T-shaped line protection and calculation method which comprises the following steps: longitudinal impedance is calculated when internal faults and external faults occur in a T-shaped single phase line; the longitudinal impedance is analyzed under a three phase line model, and the longitudinal impedance is analyzed in a condition of current transformer transient saturation. Via use of the longitudinal impedance-based T-shaped line protection and calculation method disclosed in the invention, faults can be accurately and rapidly determined and effectively responded to after high tension transmission line faults occur, and a problem of difficult setting of a traditional current differential protection mode and specifically a problem that traditional current differential protection mode is susceptible to current transformer transient saturation can be overcome.

The invention relates to a controller of color-change head, which can be mounted on the knitter and make feeding operation on colorful yarn on the pushing rail of knitter via the control of needle-selector, to realize the pattern with different colors on the knitted cloth. The controller comprises: a main body and several color-selection boards interval arranged inside the main body. Wherein, each color-selection board comprises a first connection bar and a second connection bar; the back end of first connection bar is axially mounted on said main body; the front end of first connection bar has a first hook; said main body is axially mounted on the center of second connection bar; the upper and lower ends of second connection bars individually have a second hook and a support, while said second hook is hook jointed with the first hook of first connection bar; several push-yarn plates are arranged inside the main body which can move up and down; said push-yarn plates are arranged at the front of said color-selection board; and the support of second connection bar of color-selection is support said push-yarn plate.

The invention discloses a voltage transformer excitation surge current free idle-loaded switching-on controller which is composed of a primary switch, an auxiliary switch and a voltage regulator. The auxiliary switch and the voltage regulator are connected in series, then are connected parallelly with the primary switch at the input end of the voltage transformer, and the primary switch and the auxiliary switch are mutually locked. When the voltage transformer is put into operation and the auxiliary switch is conducted, the voltage regulator regulates the primary lateral input voltage of the voltage transformer by a certain gradient, so that the starting process of the power transformer can be controlled, avoiding large excitation surge current caused by overlarge primary lateral voltage; after the voltage transformer is stared normally, the auxiliary switch is cut off and synchronously the primary switch is conducted, the power transformer can run normally while the voltage transformer is withdrawn. The invention can realize the soft starting control of the voltage transformer idle-loaded switching-on, radically avoid the excitation surge current from impacting the power transformer and surrounding electric equipments, reduce the false operation rate of a protective relaying device and enhance the success ratio of the idle-loaded switching-on of the power transformer.

The invention discloses an intelligent electric locomotive collision-prevention system, which consists of an infrared emission unit, an infrared receiving unit, a master control unit, an execution unit, a sound and light alarming unit and a hydraulic brake unit, wherein the master control unit mainly comprises a singlechip IC (AT89C2051); the infrared receiving unit is connected with the input end of the singlechip; and one path of the output end of the singlechip is connected with the sound and light alarming unit and a hydraulic oil pump, while the other path controls the opening of a proportional electromagnetic valve. The intelligent electric locomotive collision-prevention system has a simple structure and rational design, and can automatically realize fast and stable stop before theoccurrence of collision risks, completely avoid electric locomotive collision accidents in the underground rail haulage process of a coal mine, greatly reduce economic loss and social impact caused by the accidents and improve the security coefficient and production efficiency of the coal mine.

The present invention provides a blocking method of distance protection swing of a high voltage transmission line, the swing blocking technique in the high voltage transmission line distance protection has always been one of the focus discusses. The technical scheme of the invention has two swing blocking methods having different principles, automatically selecting one swing blocking method according the length of the protection line. When the protection judgement is a short line, periodic oscillation change rate and the position of the apparent impedance are real-time detected by a stackable counter, the dwell is relatively adjusted and the relieved, the method is not only applied to the great round covering the small round type operation characteristics, but also applied to the great quadrilateral covering the small quadrilateral type operation characteristics; when the protection judgement is a long transmission line, the swing blocking pattern fpr detecting Ucos fai and its change rate is utilized. Two patterns is automatically switched by the command set in a microcomputer software program, according to the size of the setting impedance.

The invention belongs to the field of development of oil, water and gas wells and discloses an underground control system for the oil, water and gas wells. The integral system comprises an RFID (Radio Frequency Identification) passive tag, an RFID reader-writer, a wireless communication coil, a magnetic switch, a battery pack and a driving mechanism. The underground control system not only can be used for controlling connection and disconnection of valves in the oil, water and gas wells, but also can be used for regulating the opening of the valves and can be used for various process control and parameter testing in the production process of the oil, water and gas wells; and if sensors are arranged in valve carriers, information such as the temperature, the pressure and the flow inside the oil, water and gas wells, can be acquired by carrying out writing operation on the RFID electronic tag. The invention overcomes the defects that in the prior art, in the underground harsh environments of high temperature, high pressure, corrosion and the like, the valves cannot be accurately and reliably controlled, the valves are easily operated by mistake, the valves have low reliability in the long-term working process, the construction is complex, the occupied production time is long and the like.

The invention provides an SG3525 integrated chip-based single-chip microprocessor control technology charger. The charger comprises an AC (Alternate Current) rectifying circuit module 1, a topological structure circuit module 2, a main output circuit module 3, an output switch device module 4, a battery pack 5, an SG3525 chip module 6, a drive circuit module 7, a constant voltage constant current circuit module 8 and an MCU (Micro Control Unit) detection and control circuit module 9. Charging current and charging voltage can be dynamically adjusted according to the state of charge of a lead acid or lithium battery, current square waves of different frequencies are set, and different pauses, namely intermittent charge, is provided for the battery charging process, so that a novel charger which has the advantages of quick charging, long discharge time of a rechargeable battery, namely high labor, no crystal, no dehydration, no heating and long life is realized.

To solve the problem that a temperature compensating capacitor used as a remedy for change in electrostatic capacity due to change in temperature, increase in reverberation time, and inability of obstacle detection in a close range is high-cost, and that the reflection sensitivity is deteriorated when invar alloys or the like of low thermal expansion are adhered between a bottomed cylindrical case and a piezoelectric element, to the opposite side of the piezoelectric element on the side of the case in the shape of a cylinder with bottom or to both sides of a piezoelectric element, in a conventional ultrasonic wave transmitting and receiving device. In the ultrasonic wave transmitting and receiving device, annularly formed invar alloys or the like of low thermal expansion are embedded in an annular groove provided on the surface for adhesion of the piezoelectric element of the bottomed cylindrical case by adhesion, press-fitting or the like, and the piezoelectric element is adhered on it. In this way, obstacles can be stably detected in a wide range of temperature without using a temperature compensating capacitor and without deterioration of reflection sensitivity.

The invention relates to an impedance protection method and an apparatus suitable for a micro-electrical network. Based on obvious voltage reduction when faults appear in the micro-electrical network and clear directivity of impedance protection, rapid isolation of the faults is realized by protective apparatuses oppositely configured in on-site and dispersed manners.

The present invention leads to that the rotating position detector is not effected by the outer magnetic field, reduces the interference included in the output of the rotating position detector and prevents the false action of the rotating position detector. The rotating electric machine comprises the following components: a stator (2); a rotor (1) which has a rotation axis (4) and rotates axially with the stator (2); end caps (5) and (6) which support and fix the stator (2) and at the same time support the rotation axis (4) to facilitate the rotation; a rotating position detecting part (11) which is arranged on the rotation axis (4) at the side opposite to the load and detects the rotating position of the rotor (1); and a power part (18) which is arranged at the external circumferential side of the rotating position detecting part (11) and is provided with a switching element (9). In the rotating electric motor the rotating position detecting part (11) is arranged with a shielding component (12) which covers the external circumference to shield the magnetic field generated by the switching element (9).

The invention discloses an automatic belt tension regulating device of a coal feeder. The automatic belt tension regulating device is characterized by comprising a control assembly and a regulating assembly, wherein the regulating assembly comprises a reduction gear and a tightening roller, and one end of a tightening roller core shaft is provided with a sliding block; a main gear of the reduction gear is connected with a motor, a driven gear is connected with one end of a tightening rod, the other end of the tightening rod is arranged in a pair of tightening rod guide rails and connected with the sliding block at one end of the tightening roller core shaft, and the sliding block is arranged in the tightening rod guide rails; the moving direction of the tightening rod is perpendicular to the tightening roller core shaft; the control assembly comprises a tightening wheel and a proximity switch, and one end of the tightening roller core shaft is provided with a sensing block; the proximity switch related with the sensing block is connected with the motor through a relay. The automatic belt tension regulating device of the coal feeder is accurate, reliable, free of manual operation, and capable of automatically regulating belt tension of the coal feeder.

The invention provides an air conditioner economizer. The air conditioner economizer comprises a power supply circuit, an input circuit and an output circuit, wherein the input circuit comprises an air conditioner internal-coil temperature sampling circuit, an indoor temperature sampling circuit, a compressor work state sampling circuit, a change valve sampling circuit and an infrared remote control circuit; and the output circuit comprises a compressor relay circuit, a change valve relay circuit, a communication circuit and a display circuit. The air conditioner economizer can easily and fast connect the existing air conditioners together to form a local area network for centralized control or remote control; the operation state of the air conditioners can be determined by detecting the current work condition of the compressors and change valves of the air conditioners, the temperature values of the internal-coils of the air conditioners can be adjusted to control the air conditioners from different producers which have different standards without causing operation faults of the air conditioners; when the air conditioner economizer is used for network control, a PC can be used to realize uniform on-off and temperature adjustment; and temperature automatic adjustment and on-off of the air conditioners can be realized according to a preset time or date of the PC, thus reaching the aim of saving energy.

The invention provides a pedal scooter, which comprises a scooter frame, front wheels, back wheels, a damping mechanism, a handle, a pedal plate, a brake and a transmission mechanism, wherein the transmission mechanism is arranged at the lower part of the scooter frame and is connected with the pedal plate and the back wheels. Compared with relevant arts, the pedal scooter has the beneficial effects that the reciprocating swinging is converted into rotary movement by a pivot four-bar mechanism and a wheel system combination, dead points are avoided, and the false action is avoided; the structure is simple, the weight is light, and the carrying is easy; the problem of final one kilometer of people during outgoing is effectively solved.

The invention discloses a bookbinding machine with an improved locking mechanism. The bookbinding machine with the improved locking mechanism is characterized in that an unlocking rod is arranged on a rack, a drilling mechanism is provided with a trigger mechanism, the lower end of the unlocking rod abuts against a locking block, a trigger part for unlocking an upper pressing head and making the upper pressing head reset upwards is arranged on the unlocking rod, and after pressing rivet operation is finished, in the resetting process of the drilling mechanism, the trigger mechanism of the drilling mechanism triggers the trigger part, the unlocking rod drives the locking block to release the locking rod, and therefore the locking state of the locking block is relieved and the upper pressing head resets. The bookbinding machine is simple in structure, ingenious in design, few in parts, low in cost, stable and reliable in motion, and free of incorrect operation, automatic locking, automatic unlocking and automatic resetting of the upper pressing head are achieved, the bookbinding machine does not need to be driven by an independent motor, a complex linkage mechanism is not needed, and users do not need to manually operate the bookbinding machine.

The invention relates to a safety industrial control system based on a safety intelligent controller. The system is composed of a PLC controller, an input and output module and an upper computer. ThePLC controller is the core of the whole system. An independently researched and developed industrial chip is adopted, and a security firewall and a security encryption system are arranged in the industrial chip. Safety protection is realized on an infected main body. An input and output module and an upper computer are matched to form a set of pure industrial control system with safety protection.A safety protection system is arranged in each link of the upper computer, the PLC and the input and output module, multiple protection is achieved, major accidents such as misoperation can be avoided even if one link is attacked, the other two links can be comprehensively verified and judged, fault processing is carried out, and safety measures are immediately taken to prevent accident expansion.

The hand and electric clutch unit for change-over switch consists of drive motor, reducing mechanism, executing mechanism and handle. It also has clutch mechanism and micro switch connected seriallywith the drive motor. The clutch mechanism is installed inside the drive link of the reducing mechanism and has clutching control part installed near the output shaft of the reducing mechanism and with one end pushing against the micro switch to constitute electromechanical interlocking structure. In the hand switching of power supply, the clutching control part is pushed to separate the outputshaft of the reducing mechanism from the drive motor and turn off the micro switch. Pushing the handle drives the executing mechanism only without driving the motor owing to the cut-off power supplyfor the drive motor.

The invention discloses a steering wheel with a direction light button. The steering wheel with the direction light button comprises the steering wheel and a direction light control button which is arranged at the preset position of the steering wheel and at least comprises a left turning button and a right turning button. Therefore, when a driver pre-switches a direction light, a hand can still hold the steering wheel, and can operate the direction light control button intuitively, so that the possibility of the error action of the direction light can be eliminated.

The invention provides a method and a system for switching main and standby synchronous clocks under a BC (Basic Control) mode of a PTN (Packet Transport Network) synchronous network of a wide area protection system. Wide area control protection devices of various substations are connected through a PTN network device and interstation time synchronization is realized by adopting a BC synchronizing function of a transmission IEEE1588V2 protocol; when the main synchronous clock has a fault, a time service interface of each wide area control protection device is cut off, and the standby synchronous clock is fast tracked in this time; and after time precision of the standby synchronous clock is determined, switching completion information is sent to all PTN network devices to realize time service of each wide area control protection device again. The method and the system have the characteristics of fast fault switching speed, high accuracy, good signal transmission quality and low time deviation ratio of each wide area control protection device in a fault process of the synchronous clock.

The invention discloses a visual grounding device for rail traffic. The visual grounding device comprises a protective casing, a grounding operation device, a static-contact guiding device, a dynamic-contact guiding device and a fixed mounting bottom plate, wherein the grounding operation device is connected with the static-contact guiding device through a flexible cable; besides, the grounding operation device is connected with the dynamic-contact guiding device in a contactable manner through a contact blade; the static-contact guiding device is connected with a contact rail of the rail traffic through a cable; the dynamic-contact guiding device is connected with a running rail of the rail traffic through another cable; the grounding operation device has four functional modes: an electric mode, a locking mode, a manual mode and a remote mode; under each mode, the grounding device can be operated only through a specified method corresponding to the mode, and the grounding device cannot be operated through other methods. The visual grounding device disclosed by the invention is compact in structure, and convenient and reliable to operate; the visual grounding device has the following four functions: electric operation, manual operation, remote control and locking, and the four functions can be mutually locked, so that mal-operation can be effectively avoided, the electrical safety and reliability are improved, and the inspection and repair efficiency and the rush-repair efficiency are further improved.

The invention relates to an electronic plug and an electronic key. The electronic plug comprises a plug body and a plug component, wherein the plug component comprises an electronic cylinder, a printed circuit board (PCB), a spring seat and a slider set; the slider set is connected with the spring seat by a spring; a heat shrink metal wire and a positive lead are arranged between the PCB and the slider set; the PCB comprises a first micro processing unit, a first data interaction module and an electronic switch; and one end of the electronic switch is connected with the positive lead at a connection point on the slider set by a return wire, while the other end is grounded. The electronic key comprises a key body and a power supply and a second micro processing unit which are arranged in the key body, wherein an identification head is arranged at one end of the key body; and a memory and a second data interaction module are connected with the second micro processing unit. According to the invention, the long-term electrification of the electronic plug is avoided, and the maintenance cost of an electronic lock is reduced; and meanwhile, the electronic key is changeable in coding and high in flexibility and can be provided with different permission and validity.