387 results about "Stop signal" patented technology

The invention provides a drain valve leakage online monitoring method and system based on infrared thermal imaging and deep learning. Comprising the following steps: step 1, collecting a thermal image sequence of a drain valve area in real time through an infrared thermal imager, and simultaneously obtaining a drain valve start-stop signal; step 2, based on a steam trap start-stop signal, synchronously segmenting the thermal image sequence into a working state sequence and a shutdown state sequence according to a working period, and performing dynamic background difference processing on each frame of image to eliminate thermal inertia interference of equipment; 3, calculating a temperature gradient map of each frame of image, generating a temperature gradient mask, and highlighting temperature mutation characteristics of the leakage area; 4, constructing a two-channel time sequence compression network model; 5, evaluating the environmental interference degree based on the dynamic interference index, and dynamically adjusting a leakage judgment threshold value; and step 6, in combination with the leakage region area change rate, the temperature gradient change rate and the sensor data trend, carrying out graded judgment on leakage events, and distinguishing real leakage from background thermal interference through texture feature matching.

The invention belongs to the field of artificial intelligence and energy power system cross control, and particularly relates to a coal-fired unit fused salt combined frequency modulation control method and device based on deep reinforcement learning. According to the method, a deep reinforcement learning agent model is constructed, and boiler fuel quantity, steam turbine valve position, fused salt heat charging and discharging power and pump starting and stopping signals are dynamically output based on state space vectors; and tracking precision, thermal stress, emission and coal consumption indexes are fused through a multi-target reward function, and strategy autonomous optimization is realized by adopting a double-Q network, experience playback and target network delay updating mechanism. After deployment, the boiler, the steam turbine and the molten salt unit can be coordinated on line, power space-time decoupling and closed-loop cooperation are achieved, on the premise that main steam parameter stability and equipment safety are guaranteed, the frequency modulation response speed and precision are remarkably improved, the thermal fatigue risk is reduced, and the unit economy and the power grid adaptability are enhanced. And a flexible adaptive adjustment capability is provided for a high-proportion new energy power system.

The invention relates to the technical field of integrated circuit testing, and discloses a method and equipment for scanning a voltage and current flip point of a chip, and the method comprises the following steps: an upper computer completes parameter configuration and wave table loading and then sends a starting instruction, a global synchronization unit generates a synchronization signal, and the synchronization signal is sent to a chip; the random waveform generator is started in parallel for scanning, the trigger unit is started for monitoring, the internal counter is started for timing, when the trigger unit monitors overturning, a stop signal is sent, the global synchronization unit latches a count value immediately, and finally, the upper computer reads the count value and calculates an overturning point value in combination with a wave table rate and a clock period. According to the invention, the global synchronization unit is used for coordinating the parallel hardware architecture of the arbitrary waveform generator and the trigger unit, so that the continuous scanning of the excitation signal and the real-time monitoring of the response signal can be autonomously operated on the hardware level, and the overall time consumption of a single flip point test is greatly shortened.

The invention relates to the technical field of pollution source supervision, and discloses a pollution source off-site supervision method and system based on big data, and the method comprises the steps: building a dynamic verification rule library through coupling the operation beat data of enterprise key equipment and the total power consumption fingerprint data, and comparing the matching degree between the actual energy consumption and the expected mode in real time and generating a process credibility index. According to the invention, conversion from traditional pollution discharge data verification to production process stability verification is realized, and an unforgeable supervision trust mechanism is constructed through the physical relevance between the equipment start-stop signal and the power utilization characteristic; and meanwhile, the judgment accuracy under the extreme working condition is ensured by utilizing environmental parameter dynamic compensation and micro-differential pressure bypass verification, and finally a quantifiable accumulation enterprise environmental protection credit evaluation system is formed.

The present disclosure relates to devices, systems and / or methods for myopia control. The present disclosure generally relates to a lens that provides a stop signal for myopia on a substantial portion of the spectacle lens being used by a viewer. The present disclosure relates to devices, methods and / or systems for applying a stop signal for eye development using ophthalmic lenses in combination with microlens arrays. The present disclosure also relates to devices, methods and / or systems for modifying incident light through spectacle lenses that utilize color cues to slow down the rate of myopia progression. The present disclosure relates to devices, methods and / or systems for applying a stop signal for eye development using spectacle lenses in combination with refractive and / or diffractive optical elements that provide conflicting or opposition optical signals at wavelengths between 510 nm and 610 nm.

The invention relates to a two-step time-to-digital converter and a method thereof, a phase-locked loop and an analog-to-digital converter. The method comprises the following steps of: performing N1-stage delay on a reference signal rs in sequence, and performing coarse quantization on the delayed signal of each stage relative to a feedback signal fb; when the two signals are different, after the time t1 is delayed, the first arriving signal is selected as a time starting signal Start and the fb is delayed for the time t1 and then serves as a time stopping signal Stop in the delayed period, and when the two signals are the same, the rs is selected as Start after the time t2 is delayed, and the fb is selected as Stop after the time t2 is delayed; performing fine quantization formation on the Start and the Stop; and decoding the code into n1-bit high-bit binary codes and decoding the code into n2-bit low-bit binary codes. The technical problem that the area and power consumption of an existing two-step TDC are increased due to the fact that the number of logic gates of a selector is greatly increased along with the increase of coarse quantization bits is solved.

The invention discloses an AI dialogue flow control method, system and device supporting real-time interruption of a user, a medium and a program product. The method comprises the steps that a user request is received, and a flow session is established; based on the stream session, requesting LLM increment generation, receiving fragments generated by increment, returning the fragments, and pushing the fragments to the client; when a click stop request of a user is received, an STOP signal is sent; when the STOP signal is monitored, sending a mark termination request; after a mark termination request is received, a subsequent generation termination request is sent to the LLM, a STREAMTERMINATED semantic event is published and broadcasted, and generated content and a termination mark are returned to the client; terminating subsequent generation comprises stopping untriggered subsequent reasoning and tool chain calling; discarding the tail cache which is not sent; and recording the output token count, and terminating the offset. The AI dialogue flow control method supports real-time interruption of the user, is low in delay, clear in semantics and recoverable, and further has the advantages of saving resources, being high in stability, capable of being universally expanded, gaining behavior analysis and the like.

The invention relates to the technical field of electricity approaching early warning, in particular to a transformer substation operation vehicle electricity approaching early warning method and system based on space logic calculation. The method comprises the following steps: constructing a static safety electronic fence of the electrified equipment of the transformer substation, continuously generating differential correction data, simultaneously carrying out carrier phase differential calculation, and outputting real-time three-dimensional coordinate data of an operation vehicle and a moving part; the space coordinates of the static safety electronic fence and the real-time three-dimensional coordinate data of the operation vehicle and the moving part are input into a space logic calculation unit for real-time space distance comparison and logic operation, and the grade of an early warning area where the operation vehicle is located is judged; a forced stop signal is sent according to the judged early warning area grade; and after receiving the forced stop signal, the active stop device is driven by the controller to realize forced stop of the vehicle, and continuously feeds back a braking state to the spatial logic calculation unit to form a safe closed loop. According to the invention, the operation safety of the substation operation vehicle can be obviously improved.

The application discloses a kind of trusted time transfer device and method, it is related to trusted time transfer technical field, including network management system and trusted time transfer equipment;Network management system is used for equipment identity solidification and authentication and equipment operating state real-time monitoring;Trusted time transfer equipment is based on trusted time signal reception relay module, equipment identity authentication pre-solidification mechanism, two-way certificate verification and transmission encryption mechanism, equipment failure stop signal transmission mechanism and the traceability and proof mechanism of time signal, real-time measurement is carried out to trusted time signal, time delay compensation, signal amplification processing is transferred out;The application ensures that itself is not replaced by strict control mechanism;On signal processing, the controllability of time real-time detection and time delay compensation is realized;In addition, it also provides a feasible path for the traceability verification and credibility proof of time signal with time relay function.

The invention provides a tool clamping state online monitoring and control system based on an intelligent tool handle. The intelligent cutter handle of the system is integrated with a temperature sensor and a position sensor, cutter temperature and position signals in the composite material machining process can be accurately and efficiently obtained in real time, and therefore the cutter clamping state is reflected. The intelligent knife handle lower computer wirelessly transmits the position and temperature signals to upper computer software to be displayed and stored. The system sets a signal threshold value according to data information when tool falling occurs, and judges whether a tool clamping failure abnormal state exists or not in real time. Once the upper computer software monitors the abnormal state of the cutter, an emergency stop signal is sent to the numerical control machine tool control unit in time to quickly close the machine tool spindle, the machining rejection rate is reduced to the maximum extent, and the purpose of improving the machining efficiency is achieved.

The present application relates to the technical field of coal sampling machinery, and particularly relates to a novel automobile sampling machine, which comprises a sampling execution device, a sample processing device and a control device. The sampling execution device is provided with a screw drill type sampling head, a driving mechanism, a lifting mechanism and a cleaning mechanism; the sample processing device comprises a sample collector and a sample preparation unit. The control device is connected with each device through an industrial communication bus and is configured to perform a sampling point random determination operation to generate coordinate information, control the sampling head to move to a target position, then drive the outer cylinder sawtooth structure to rotate and cut and break the lump coal in a breaking mode, and then switch to a sampling mode to drive the internal drill rod to drill and sample; the sampling amount is monitored through a sensor to generate a stop signal, the sampling head is controlled to be lifted to the sample collector to release the coal sample, and finally the cleaning mechanism is started to clean the residues. The present application realizes the automatic sampling of coal of all particle sizes and effectively solves the sample distortion problem caused by the fact that lump coal cannot be sampled.

The invention provides a heterogeneous task lock scheduling system and a control method thereof.The heterogeneous task lock scheduling system comprises a task lock scheduling module, the task lock scheduling module calculates a lock weight actual value corresponding to a current task, compares the lock weight actual value with a lock weight threshold value, and sends the lock weight actual value to the current task; according to the task type and the comparison result, a task lock type matched with the current task is allocated to the current task; the core domain module comprises an RTOS core domain and a Linux core domain which communicate with each other, and can dynamically adjust a core domain type bound with a current task according to a processing stage; an emergency response channel through which an emergency stop signal can be sent into the RTOS core domain; the real lock weight value corresponding to the current task is calculated through the task lock scheduling module, the real lock weight value is compared with the lock weight threshold value, and therefore the task lock type matched with the current task is allocated to the current task according to the task type and the comparison result, and the problem of real-time performance instability caused by task lock competition of the CNC system under the AMP architecture is solved.

The application discloses a flyback converter and a starting control method thereof. The flyback converter comprises a transformer, a power switch tube, a rectifier tube, a primary side control circuit, and a secondary side control circuit. The primary side control circuit generates a first control signal to control the transmission of starting energy to a secondary side part of the flyback converter after the flyback converter is powered on. The secondary side control circuit transmits a stop signal and a second control signal to the primary side control circuit in sequence after starting. The application can prevent the primary side switch signal from suddenly changing during the starting process, realize the smooth transition of primary side and secondary side control, and realize the smooth starting of the output voltage. The application has good output characteristics, a simple control method, better compatibility, and lower cost.

The invention provides an event-driven satellite service software service management system and method, and belongs to the technical field of software systems.The method comprises the steps that initialization preparation is conducted on a service management system; starting and operating the service management system; and circularly operating the service management system, monitoring the operation state, and detecting and receiving a stop signal. Satellite functions are disassembled into independent modules through the service layer, the cooperation efficiency is improved through a standardized interface, the modules with the same execution cycle can be freely combined into a service, and function decoupling is achieved; unified packaging is realized through the adaptation layer; the hiding is complicated, the exposure is simple, a unified operating system and a driving standardized interface are provided for an upper-layer functional module, and the change influence caused by the operating system and hardware driving is obviously reduced; satellite service software is rapidly transplanted, and the adaptation cost is reduced; and the bottom layer change is zero-perceptual, and linkage BUG is avoided.

The utility model discloses a composite woven bag finished product tensile strength testing device which comprises a base, the top of the base is fixedly connected with a vertical plate, one side of the vertical plate is fixedly connected with an air cylinder, the top of the air cylinder is fixedly connected with a controller, and the output end of one end of the air cylinder is fixedly connected with a movable plate. When the tensile strength of a composite woven bag finished product is tested, a test sample is fixedly clamped through the base and the clamping blocks, then the air cylinder is started, the air cylinder drives one of the clamps to move towards one side, the pressing rod exerts pressure on the elastic assembly in the moving process, the pressure sensor senses the pressure and transmits a signal to the controller, and the controller is started. The controller receives a signal and converts the signal into a digital display, when a test sample is broken, the photoelectric sensor receives the signal and transmits the signal to the controller, and the controller sends a stop signal to the air cylinder, so that the situation that the equipment cannot be stopped immediately when the sample is suddenly broken in a test, and the equipment is possibly damaged is effectively prevented.

The utility model belongs to the technical field of water supply, and particularly relates to a remote control vacuum pump exhaust device and system, which comprises a vacuum pump, a vacuum pump control box, a main exhaust pipeline and an electromagnetic valve, the electromagnetic valve is arranged on a main exhaust pipeline, the control end of the electromagnetic valve is connected with the vacuum pump control box, a starting button and a stopping button are arranged on the vacuum pump control box and used for inputting a starting signal and a stopping signal of the vacuum pump, and the output end of the vacuum pump control box is connected with the control end of the electromagnetic valve. Remote starting and stopping of the vacuum pump exhaust device can be achieved, and the starting efficiency of the centrifugal pump is greatly improved.

The embodiment of the invention provides a wireless router stability aging test method and device, and the method comprises the steps: presetting aging test parameters, and controlling a to-be-tested wireless router to enter an aging test mode based on the preset aging test parameters; within the preset aging duration, state monitoring data of the wireless router to be tested are collected in real time, and after the preset aging duration is reached, the wireless router to be tested is controlled to stop signal transmission and data packet transmission and tries to be connected with the preset verification network; generating a final judgment result of the to-be-tested wireless router based on a network connection result and the state monitoring data; and general verification is combined with state data collected in real time for comprehensive judgment, so that errors caused by manual judgment are avoided, and objectivity and consistency of test result judgment are realized.

The application relates to the technical field of ink cartridges, and discloses an anti-backflow ink cartridge and a control method and device thereof. When unstable negative pressure is detected during the operation of the ink cartridge, the cause of the unstable negative pressure is determined; when the cause of the unstable negative pressure is determined to be ink suction pipeline blockage, a liquid level sensor is controlled to feed a secondary ink cartridge ink shortage signal to an ink return circulating pump and a negative pressure system, so that the ink return circulating pump and the negative pressure system stop working; when the cause of the unstable negative pressure is determined to be unsmooth ink return, the liquid level sensor is controlled to feed a working stop signal to an ink inlet circulating pump and feed an increased power signal to the ink return circulating pump, so that the ink inlet circulating pump stops working and the power of ink path circulation is increased. The PLC liquid level control structure is increased, unstable negative pressure of the ink path can be detected, the backflow problem caused by excessive negative pressure and excessive ink suction is avoided, and the stability of the ink supply part during circulation is increased.

This invention provides a control method and system for an on-board electric compressor, including: when the compressor starts for the first time, the compressor controller initiates a self-test process to check whether the internal voltage of the controller is normal; if the internal voltage is within a preset voltage range, subsequent control steps are executed; if the internal voltage exceeds the preset voltage range, it is determined that the internal voltage of the controller is faulty, and subsequent control steps are not executed; the opening signals of the AC switch and the blower switch are transmitted sequentially to the vehicle controller via the evaporator thermostat and the pressure switch; the vehicle controller sends a high-voltage enable signal through the multi-in-one integrated controller and sends a compressor start / stop signal to the compressor controller; after receiving the compressor start / stop signal, the compressor controller starts the compressor and operates with a multi-stage speed control strategy; this invention solves the problem of frequent compressor start / stop caused by triggering the evaporator over-temperature protection and over-pressure protection devices without affecting the cooling effect of the cab.

The embodiment of the invention provides a central air conditioning system, and relates to the technical field of air conditioners. According to the central air-conditioning system, real-time long-distance signal transmission can be achieved by improving the repeater, and signal transmission can be stopped in time when signal conflicts occur. The central air conditioning system comprises a first bus, a second bus and a repeater. The repeater comprises a main control chip, a first control circuit, a second control circuit, a first switching circuit and a second switching circuit, the signal end of the first control circuit is electrically connected with the first bus; the signal end of the second control circuit is electrically connected with the second bus; the first switch circuit is electrically connected between the first output end of the first control circuit and the first input end of the second control circuit; the second switching circuit is electrically connected between the first output end of the second control circuit and the first input end of the first control circuit; the first control circuit and the second control circuit are configured to convert the differential signal and the single-ended signal.

The present invention relates to the technical field of alkaline water electrolyzers for hydrogen production, and in particular to a method and monitoring system for controlling the safe operation of an alkaline water electrolyzer. The method comprises: mounting at least one disc spring deformation monitoring instrument at disc springs of an alkaline water electrolyzer, so as to monitor deformation of the disc springs and provide a source of a safe operation control signal for the electrolyzer; making a control determination on the basis of a disc spring deformation amount monitored by the disc spring deformation monitoring instrument, to determine whether the electrolyzer is within a safe operation range; and when the disc spring deformation amount exceeds a specified safe use range, triggering a stop signal to stop operation of the electrolyzer. In the present invention, safety issues during operation of the electrolyzer can be effectively found, and timely determination on maintenance and treatment of the electrolyzer is made, thereby ensuring safe operation of the electrolyzer.

The invention relates to the technical field of power electronics, and discloses an alkaline electrolytic cell shutdown discharge circuit which comprises a voltage sampling module, a logic control module, a solid-state switch driving module, a bleeder resistor module and a protection module. The voltage sampling module monitors direct-current high voltage of the electrolytic cell in real time and generates low-voltage signals. The logic control module receives the low-voltage signal, compares preset upper and lower threshold voltages, and generates a control signal or a stop signal. And the solid-state switch driving module amplifies the control signal and drives the power switch device to be switched on. The bleeder resistor module converts electric energy into heat energy for dissipation through a power switch device and a bleeder resistor. The protection module absorbs turn-off surges through a fast recovery diode or an RC circuit to protect the power switch device. The system adopts an all-solid-state device to replace a mechanical relay, avoids arc generation, realizes rapid and controllable discharge through closed-loop control, prolongs the service life of equipment, and is suitable for shutdown discharge requirements of the alkaline electrolytic cell in an industrial environment.

The utility model relates to a kind of safety protection structure of grinding machine, including the protective cover being set on workbench, grinding head is equipped in protective cover, grinding head is driven by grinding head driving device, operating door and safety lock are equipped on protective cover, safety lock includes controller, first lock body is installed on protective cover, second lock body is installed on operating door, locking piece for locking;The controller is electrically connected with grinding head driving device, for receiving the start-stop machine signal of grinding head driving device;Locking piece has the locking state of the mutual locking of first lock body and second lock body, and, locking piece has the unlocking state of the relative displacement of first lock body and second lock body;The controller is electrically connected with the locking piece, for controlling the action of locking piece, realize the switching between locking state and unlocking state.Safety lock identifies the start-stop signal of driving device by controller, grinding head starts, safety lock maintains locking state, operating door cannot be opened relative to protective cover, ensure worker operation safety.

This invention discloses a time-to-digital converter and its time margin extraction circuit, comprising multiple time margin extraction units; a first OR gate, with multiple input terminals receiving first output signals from the multiple time margin extraction units respectively, and an output terminal providing a second start signal; a second OR gate, with multiple input terminals receiving second output signals from the multiple time margin extraction units respectively, and an output terminal providing a second stop signal; each time margin extraction unit includes a first flip-flop, with its input terminal connected to a first input signal and a set terminal of a first pseudo-flip-flop, and its set terminal connected to the first stop signal and the input terminal of a second pseudo-flip-flop; a second flip-flop, providing a first output signal based on the output signal of the first flip-flop and the first input signal; and a third flip-flop, providing a second output signal based on the output signal of the first flip-flop and the second input signal, thereby improving the measurement accuracy of the time-to-digital converter and its continuous measurement capability.

The invention provides a servo motor zeroing method and a zeroing device, the zeroing method is applied to the servo motor zeroing device, the device comprises an impact structure, a hard limiting structure and a buffer piece arranged on the hard limiting structure, and the impact structure is movably arranged relative to the hard limiting structure so as to contact or avoid the buffer piece; the method comprises the steps that after it is judged that a zero returning instruction is received, an impact structure is controlled to move in the direction close to a hard limiting structure, and a buffer piece is impacted; acquiring a first torque of the impact structure in the process that the impact structure impacts the buffer piece; when the first torque is larger than the set torque of the impact structure, the impact structure is controlled to move in the direction away from the hard limiting structure; when it is judged that the stop signal is detected, the impact structure is controlled to stop moving, and zero returning is completed; the problem that in the prior art, zero returning depends on an external inductive switch, and when the external inductive switch goes wrong, zero returning point misjudgment is caused is solved.

The present disclosure is particularly directed to contact lens devices and / or methods for myopia treatment. The present disclosure is directed to modifying the incoming light by a contact lens, using a stop signal to slow the rate of progression of myopia. More particularly, the present disclosure is directed to a purposeful configuration of a non-circular, non-transparent aperture stop on the original base single-vision optic zone of a contact lens that can facilitate the redistribution of light energy into the oblique frequencies of the retinal image to provide an optical stop signal that prevents, reduces or controls the progression of refractive error of progressive myopia.

The utility model discloses a box grabbing safety guarantee system based on multiple sets of laser radars and multiple sets of cameras. The box grabbing safety guarantee system comprises a first set of laser radars used for obtaining a first scanning result; the second group of laser radars is used for obtaining a second scanning result; the first and second groups of cameras are respectively used for acquiring first and second groups of images; the container grabbing anti-lifting detection unit judges whether the container at the container truck plate lock head is completely separated from the truck plate or not according to the second scanning result, and judges whether the container truck plate moves upwards or not in the lifting appliance lifting process or not according to the second group of images; the container inlet lock detection unit judges whether a lock head is hung below a container lock hole or not according to the second scanning result, and judges whether a lock head is hung below the container lock hole or not according to the second group of images; and the control unit sends out a warning or operation stop signal according to the judgment result. According to the box grabbing safety guarantee system based on the multiple sets of laser radars and the multiple sets of cameras, the box grabbing safety is improved based on the detection results of the multiple sets of laser radars and the multiple sets of cameras.

This application provides a camera tracking control system and intelligent care device, belonging to the field of intelligent elderly care technology. The system includes a motion drive module, a posture sensing module, a face recognition module, and a controller communicating with these three modules. The posture sensing module outputs corresponding drive signals based on the left and right displacement of the human body. The face recognition module outputs a stop signal after recognizing a face. The controller drives the camera to adjust its position according to the human body's movement, locking and recording upon face recognition. The camera tracking control system and intelligent care device provided by this invention can achieve fully automatic tracking and recording of the elderly, solving the problem of blind spots that are common with fixed cameras, effectively improving the reliability of home-based elderly care, and reducing the cost of manual care.

The invention discloses a method and a device for preventing an I2C (Inter-Integrated Circuit) bus from being locked. The method comprises the following steps: detecting the level states of a serial data line and a serial clock line of the I2C bus through arbitration equipment; when it is detected that the first duration of keeping the serial data line or the serial clock line at the low level reaches a first preset threshold value, it is judged that the I2C bus has a locking risk; controlling the arbitration device to switch from a high-resistance input mode to an output mode so as to output a stop signal to the serial data line through the arbitration device; after the stop signal is output, monitoring the level states of the serial data line and the serial clock line; when it is monitored that the second duration of keeping the serial data line or the serial clock line at the low level reaches a second preset threshold value, it is judged that the I2C bus is in an abnormal locking state; and sending a reset instruction to at least one I2C device connected to the I2C bus through the arbitration device to release the I2C bus. The active monitoring and recovery of I2C bus locking are realized, and the system reliability is improved.

The utility model belongs to the technical field of high-altitude operation mechanical equipment, and particularly relates to a high-altitude operation machine and an anti-collision device thereof. The anti-collision device comprises a telescopic sleeve assembly, a trigger piece, an elastic reset piece and a limiting switch, the telescopic sleeve assembly comprises a short sleeve and a movable rod which are matched in a telescopic mode in the vertical direction, and the top end of the movable rod stretches out of the short sleeve and stretches out to the position above the working platform; the trigger piece extends out of the movable rod; the limiting switch is installed on the short sleeve and used for being electrically connected with a lifting mechanism of the high-altitude operation machine, the limiting switch is located below the triggering piece, and a contact of the limiting switch can reach the switching position under pressing triggering of the triggering piece so as to send out a work stopping signal aiming at the lifting mechanism. In the process that the lifting mechanism drives the working platform to ascend, the movable rod replaces a contact of the limiting switch to make direct contact with an obstacle, so that the damage risk of the limiting switch is reduced, and the service life of the anti-collision device is prolonged.