76 results about "Normal periods" patented technology

A method for transmitting data over a data bus with minimized digital control and data inter-symbol interference. The voltage level on the data bus is not permitted to reach the quiescent negated voltage level set by the bus terminator voltage. Additional time is provided for data detection circuitry to detect a first segment of data transferred over the data bus. A pause time is enabled after the data bus has been idle or paused for a prolonged period. After the first segment of data has been transferred, the method returns to normal operation by pausing for a normal period of time for data detection circuitry to detect subsequent segments of data transferred over the data bus. Additionally, during prolonged synchronous data transfers with unchanged data bits, the data bus is inverted and driven for further regulating the data bus voltage.

The invention discloses a train operation control system based on a space-air-vehicle-ground integration network. The train operation control system comprises an aircraft, a satellite, a wireless communication base station, vehicle-mounted equipment, trackside equipment and a dispatching center, wherein the aircraft is used for achieving train speed measurement, train location, line or turnout condition monitoring and a communication function; the satellite is used for achieving train speed measurement, train location and a communication function; the wireless communication base station is used for achieving a communication function; the vehicle-mounted equipment is used for achieving train speed measurement and train location, train control and a communication function; the trackside equipment is used for achieving train speed measurement, train location, line or turnout condition monitoring and turnout control; the dispatching center is used for achieving line or turnout resource dispatch and trackside equipment control. By means of the space-air-vehicle-ground integration network, dynamic adjustment of transport capacity of low-transport-capacity rails is achieved, and the requirement for high transport capacity in a special period is met. In addition, the train operation control system can operate according to an ordinary train operation control system in a normal period, the cost is reduced, and the train safety is guaranteed through redundancy design.

A method for controlling fossil fuel fired heating systems according to an improved adaptive cyclical control method when operating on backup (auxiliary DC) electrical power. Battery life is prolonged when used in conjunction with such improved method. Operating characteristics of the heating equipment and home or building being heated are monitored and stored in electronic memory during normal periods of operation when grid power is available. These characteristics are used to create control algorithms that are in turn specific to the system, as defined by the heating equipment and conditioned space. When the grid power is lost the control algorithms select the optimal heating mode, determine optimal cycle duration, and estimate the time to exhaustion of the remaining backup power. Operation is divided into sequential modes. When a prolonged low voltage period is detected, the backup power control initiates a short-term preliminary energy conservation mode. As the outage persists, the control transitions to intermediate and long-term energy conservation modes until the backup power is exhausted or grid power is restored.

The application discloses a fixed-time charging method and a fixed-time charging device for an electric automobile charging pile for peak regulation of a power distribution network. The fixed-time charging method and the fixed-time charging device are suitable for application scenes such as a charging pile at the parking side of a user, which can be occupied for a long time and has low charging current. By using the method and the device, the charging pile preferably selects a low-valley period for charging, and then normal period and final peak period according to load characteristics of a power distribution network line; an optimal fixed-time charging scheme which is most beneficial to peak regulation of the power distribution network is automatically generated, so that fixed-time charging of a to-be-charged electric automobile is realized by the power distribution network with a relatively-small electrical load, and on-site peak regulation is realized. Therefore, according to the method and the device, on the premise of meeting charging demands of the user and peak regulation demands of the power distribution network, the charging pile can select the period with lower use expenses for automatic fixed-time charging; optimal charging time is used as the reference of peak regulation of the power distribution network, and real-time communication between the peak regulation and scheduling is not needed; in addition, real-time adjustment of the load of the power distribution network line is not needed, so that a peak regulation realizing mode is simpler and more convenient.

According to one embodiment of the present invention, a method for searching for an access point in a terminal supporting a multiple wireless access scheme is provided. The method may comprise the steps of; receiving, from a base station using a first wireless access scheme, information relating to an access point using a second wireless access scheme; determining whether one or more access points exist using the second wireless access scheme in the cell coverage of the base station on the basis of the information: searching for an access point accessible for a period that is shorter than a normal period when determining that the access point using the second wireless access scheme exists; and accessing the found access point using the second wireless access scheme.

The invention provides an on-line closed loop optimally-adjusting-and-controlling method for a mine ventilation system. A constructed mine ventilation on-line closed loop optimally-adjusting-and-controlling system comprises a mine ventilation monitoring platform, air needing air flue state collecting subsystems distributed to air needing air flues, draught fan working condition collecting subsystems distributed to the air needing air flues and adjusting and controlling subsystems distributed to adjusting air flues and used for adjusting the wind resistance change amount of a wind resistance adjusting device. According to the on-line closed loop optimally-adjusting-and-controlling method, as the actual measurement air supply amount of wind needing points and draught fan actual working conditions are directly used for calculating target function values, and the actual adjusting amount of the wind resistance adjusting device serves as a control strategy, the problems of inaccuracy, agnosticism and the like of parameters of the ventilation system can be effectively solved, a large number of state identification sensors of the ventilation system can be saved, and more importantly, the adjusting effect can be directly obtained. On-time as-required low-power-dissipation air supply of the mine ventilation system is fundamentally guaranteed, and airflow control over the mine ventilation system in the normal period and the catastrophe period can be effectively achieved through the method.

The invention discloses a dynamic monitoring system for early warning against slope slide of a tailing pond of a strip mining pit. The system comprises a pond water level change monitoring unit, a land surface crack and displacement monitoring unit, a deep part deformation and displacement monitoring unit and a microscopic tour-inspection monitoring unit. The system has the advantages that main factors that cause slope slide can be analyzed, and monitoring has focuses. The significant structure surface that causes slop slide is analyzed for the engineering geological environment of the tailing pond of the strip mining pit, and the positions, depths and amount of deep part displacement monitoring points are determined correspondingly; and water level change is determined to be a main factor that influences the slope stability via a finite element reduction method and indoor compression test. Monitoring for water level change is enhanced, the monitoring frequency of other monitoring units is determined according to water level change data, focus monitoring is carried out in key periods, and common monitoring is carried out in normal periods. The invention also discloses a monitoring method in which the monitoring system is used.

The invention relates to an energy control method and a control system of a optical storage and charging system. When a power grid is in a peak period, if the photovoltaic power is greater than the load power, the excess power is used for charging the energy storage unit. If the photovoltaic power is less than the load power, controlling the discharge of the energy storage unit to supplement the required power; If the photovoltaic power is greater than the load power, the excess power is used to charge the energy storage unit when the power grid is in the normal period. If the photovoltaic power is less than the load power, the energy storage unit is controlled not to discharge, and all the power required is provided by the power grid. The energy control method provided by the invention fully utilizes the optical storage coordination control and reasonably cooperates with the commercial power, so that the electric energy in the energy storage unit is used as much as possible during thepeak period, and the electric energy of the power grid is not used; In peacetime, the power in the grid is used as much as possible, and the power in the energy storage unit is not used, so as to achieve the balance of power consumption and maximize the income, and ensure the power supply requirements on the demand side.

A PLL circuit is provided with a lock / unlock detection circuit which detects the locked or unlocked state of the PLL circuit by comparing the phases of a horizontal synchronizing signal with each other and an internal synchronizing signal generating circuit which outputs the comparison signal as an internal synchronizing signal when the locked state is detected or outputs the horizontal synchronizing signal as an internal synchronizing signal when the unlocked state is detected. Another mode of a PLL circuit is provided with a skew detecting circuit which resets a frequency dividing circuit upon detecting a skew which is deviated from a normal period in an external synchronizing signal, generates a dummy pulse upon detecting that no skew occurs in the external synchronizing signal in the normal period, and generates a reference signal in combination of the dummy pulse with the external synchronizing signal. When the skew detection circuit detects a skew, the circuit also resets a phase comparator circuit. A digital display apparatus having such a PLL circuit prevents disturbance of the image when the PLL circuit is in an unlocked state or a skew occurs.

A spa control system that measures the flow of water through the heater of a spa and accurately reports water temperature in the spa using only one solid-state sensor in the heater. The working condition of the sensor is first determined by energizing the spa heater for a brief period of time, with the circulation pump de-energized, then quickly de-energizing the heater and watching for a heat rise at the sensor. A small rise is sufficient to proceed with the flow test. The flow rate is now determined by energizing the pump, with the heater still de-energized, and observing the rate at which the moving water cools the inside of the heater. If there is no circulation of water through the heater, the temperature of the sensor will continue to rise from the energy applied when the heater was briefly energized. This rise will be quite significant and a clear indication of a flow problem. Conversely, with normal flow, the inside of the heater will be cooled to approximately the same temperature as the spa water in just a few seconds. If the flow is found to be adequate, the heater may be energized for a normal period of time. Since, while cooling, a measured number of degrees is dropped in a measured number of seconds, a flow rate can be reported to the user as an estimate of gallons per minute. The sensor is now carefully monitored for a sudden increase in temperature, which would indicate loss of a normal flow of water. It is known that the temperature of the water in the spa will be within one or two degrees of the observed temperature at the sensor in the heater, even when the heater is energized. The water temperature can, therefore, be accurately reported to the user just from measuring the temperature of the water in the heater. The only problem with making all measurements at the heater is that the real water temperature is unknown when the pump is not running. This problem can result in short heating cycles, or create the need to run the pump several times per day just to check on the real water temperature. The present invention uses artificial intelligence to find the proper time to turn the pump back on at a time when the spa is just beginning to need heat. Any errors in finding this time are added back to subsequent calculations to make future cycles more accurate.

The invention discloses a flood pre-disaster early warning method based on a sequential water scope remote sensing image. The method comprises the following steps: 1, inputting a multi-temporal high-resolution ground surface reflectivity remote sensing image and performing data preprocessing; 2, calculating a water body exponent, and based on a water body exponent image, extracting a water body scope binary image; 3, extracting water body features of a to-be-detected period and water body features of a normal period; 4, respectively performing stacked comparison analysis on the water body features of the to-be-detected period and the water body features of the normal period to detect abnormity information; and 5, analyzing the tracked detected abnormity information, and if a place which is originally not supposed to be covered by a water body in an observation area is continuously covered by the water body, indicating that the risk of a flood disaster in the observation area is increased and an alarm should be given. According to the method, abnormities of the water body features are analyzed from multiple angles, an early warning of the risk of the flood disaster in the observation area is given according to abnormity analysis, and thus the problem of difficulty in pre-disaster monitoring early warning of the flood disaster is effectively solved.

The invention provides an overall automatic regulation device and method of a mine ventilation system. Various automatic adjustment and control air amount adjustment devices are combined optimally, a remote intelligent regulation server collects the ventilation condition of a whole mine and calculates the air demand amounts of all air using points, a feasible overall regulation scheme is worked out in good time, and all the automatic air amount adjustment devices are controlled and regulated through a communication network. As the various air amount adjustment devices are designed, the overall automatic regulation device is suitable for different mine environments. Therefore, under the condition of not affecting normal operation of production and conveying equipment, overall optimal regulation and control of the mine ventilation system are realized, and the mine can be supplied with wind during a normal period and a catastrophe period according to time and needs.

A selection circuit switches the output between a ancillary PWM signal NSPWM and a primary PWM signal SPWM in accordance with a power supply transition period or normal period. A ancillary signal generating circuit generates a gradually rising signal which is then amplified by a second driver circuit, so that a DC block capacitor is gradually charged and discharged. Thereby, the occurrence of noise due to an inrush current is prevented.

The invention discloses a storage battery charge and discharge curve sampling system comprising a test load unit which is used for providing different resistance values at different times; a control unit which controls the connection state of the test load unit and a storage battery; a sampling unit; an automatic storage unit; and an automatic tracking unit which automatically detects the change of the current value and the voltage value in a sampling curve and adjusts the sampling frequency to focus on sampling of current and voltage fluctuation periods. Compared with the systems and the methods in the prior art, random sampling sites are inserted in the sampling process for detecting drastic fluctuation of the sampling curve in the sampling process, and the sampling frequency is increased for the curve of drastic fluctuation so that the storage battery charge and discharge curve can be recorded in a detailed way, high frequency sampling is adopted in the key curve periods, low frequency sampling is adopted in the normal periods, and thus sampling resources like storage space and sampling time can be effectively and reasonably allocated, the key periods can be focused and the efficiency is high.

Fluid pressure of a first fluid chamber of a driving means, which acts as a back pressure, is monitored by a monitoring means when a core pin is driven by the driving means in an inserting direction before injection of a molten material into a cavity of a die arrangement. When the monitored fluid pressure of the first fluid chamber exhibits abnormal behavior that is different from normal behavior observed during a normal period, the monitoring means controls the driving means to stop the driving of the core pin in the inserting direction.

Systems and methods for black-starting a power system using a battery energy storage system can be provided. In one example implementation, a method includes obtaining, by the one or more controllers, a signal requesting a black-start of the power system using the battery energy storage system. The method further includes increasing, by one or more controllers, a system bus voltage to a nominal voltage level using the battery energy storage system for a start period according to a start ramp. The method further includes maintaining, by one or more controllers, the system bus voltage at about the nominal voltage level using the battery energy storage system during a normal period following the start period.

A decision feedback equalizer includes a positive signal line, a negative signal line, a sense amplifier, a feedback driver, a load unit, a differential driver, and a charge pump. The differential driver maintains a difference between the first voltage of the positive signal line and the second voltage of the negative signal line at a last time point of the normal period to be equal to or greater than the reference voltage by adjusting strength of the positive input current corresponding to a positive input signal and strength of the negative input current corresponding to a negative input signal based on a temperature signal. The charge pump provides a positive offset voltage and a negative offset voltage to the positive signal line and the negative signal line, respectively. The positive offset voltage and the negative offset voltage are used to maintain an average voltage of the first voltage and the second voltage at the last time point of the normal period at a first value.

The invention discloses a stable anode-changing method at the late period of an aluminum electrobath. The anode is changed from 13th day after aluminum electrobath startup, in order to assure successive production as changing anode in normal period, a residual anode capable of producing for 18 days is used in 16th day and 19th day after aluminum electrobath startup; a residual anode capable of producing for 20 days is used in 22th day after aluminum electrobath startup; a residual anode capable of producing for 11 days is used in 25th after aluminum electrobath startup; a residual anode capable of producing for 11 days is used in 28th day after aluminum electrobath startup; and a residual anode capable of producing for 7 days is used in 32th day after aluminum electrobath startup. The invention has no anode changing after successive 12 days after aluminum electrobath startup, energy balance of the electrobath is not affected during this period, firm and structured furnace wall is formed, so that the electrobath has effects of stability, high efficiency and low consumption, thus improving the economic index of an enterprise.

A disk physical strain correction signal generator outputs a signal obtained by allowing a phase compensation signal to pass a LPF as a disk physical strain correction signal during a normal period. During a defect detection period, it outputs the output signal of the LPF sampled at the time of the defect detection start as the disk physical strain correction signal. A disturbance pulse correction signal is output based upon a disturbance pulse obtained by subtracting the disk physical strain correction signal from the phase compensation signal. The disk physical strain correction signal and the disturbance pulse correction signal are added to output a defect compensation signal. This defect compensation signal is applied as an actuator control signal during the defect detection period. Thus, it is possible to provide an optical disk device which can carry out a stable driving control for a reproducing operation, etc. without losing the continuity of control before and after the defect detection even when the defect detection period is long.

A system for improved collection and containment of fluids such as oils that commonly drip from an aircraft during service maintenance operations and during normal periods of storage. The system comprises a ground-supported drip pan incorporating a peripheral cutout adapted to accommodate a landing wheel of the aircraft to permit effective positioning under the engine. An embodiment for exterior use utilizing the weight of the aircraft to prevent movement of the system is also disclosed.

An analog-to-digital conversion circuit includes: a clock generating circuit which generates a clock signal including a first initial period and plural normal periods following the first initial period, the first initial period being one of a high period and a low period and being a first period immediately after a reset release, each of the normal periods being one of a high period and a low period and shorter than the first initial period; and an incremental analog-to-digital converter which operates using the clock signal.

The invention provides a method for separating and culturing human umbilical cord mesenchymal stem cells, which comprises the following steps: taking umbilical cord of fetus born after the normal period of gestation by caesarean section, flushing by PBS under aseptic condition, removing the bloodstain; using an aseptic scissor in an animal cell medium to cut the washed umbilical cord to tissue blocks, removing blood vessel and crushing, then fully mixing with the animal cell medium and oscillating, centrifuging, mixing the centrifuged deposition and a MesenCult-XF complete medium and oscillating, and uniformly planting in a cell culture dish, placing in an incubator with the temperature of 37 DEG C and 5% of CO2 for culturing for 5 days, sucking the tissue blocks out and discharging, refilling the MesenCult-XF complete medium, and replacing the medium every three days for continuously culturing to obtain the umbilical cord mesenchymal stem cells. According to the invention, the animal serum is used, the operation is simple, the repeatability is good, the security is high, and the obtained cell enables stabilization through multitime passage.

A vibration-damping control device for a vehicle calculates the correction torque which could suppress the vibration on the spring of a vehicle body. Upon outputting a correction torque command value to a braking / driving torque generating means, the vibration-damping control device outputs a hunting-period correction torque command value, which is smaller than the normal-period correction torque command value, if the vibration of the correction torque is at a predetermined vibration or more and continues for a predetermined time period. Subsequently, if the vibration of the correction torque is at a predetermined vibration or less and continues for a first predetermined time period, the output of the correction torque command value is reverted to the normal-period correction torque command value from the hunting-period correction torque command value. The frequency of executing vibration-damping control is increased by preventing the occurrence of hunting when the vibration-damping control is reverted to a normal control.

The invention provides a fault arc detecting method, wherein a current difference parameter determining result is used as a precondition, and a harmonic wave content change rate is used for determining a fault arc. The method comprises the following steps of 1, performing real-time sampling on a line by means of a current sensor; 2, calculating a difference parameter between current sampling period current and normal period current; 3, calculating an odd harmonic wave content change rate deltaPn, and comparing the odd harmonic wave content change rate with a corresponding threshold, and determining whether the fault arc occurs according to a comparison result; and 4, if the determining condition is satisfied, determining occurrence of the fault arc, outputting an alarm signal and simultaneously outputting an action signal for making a circuit breaker perform action. The fault arc detecting method has advantages of effectively eliminating interference of a nonlinear load, accurately detecting the fault arc, reducing calculation amount and simplifying a fault arc determining step.

The invention discloses a body weight health management system and a method, wherein the system and the method relate to the field of body weight monitoring management. The system comprises a body weight evaluating module and a health management module. The body weight evaluating module comprises a data acquisition module, a data calculating module, a data standard database, a data analysis moduleand a data display module. The health management module comprises a nutrition intake calculating module and a motion heat consumption calculating module. The management method comprises the steps ofinputting basic information to a to-be-tested user, wherein the basic information comprises body weight and body height; calculating the BMI value of the to-be-tested user according to a formula BMI value=(body weight) / (body height)<2>; by means of the calculated BMI value and the basic information of the user, analyzing a fact that the body weight of the user is in a thin period, a normal period,an overweight period or a fat period; and generating an optimal body weight range and a body weight management suggestion. The method performs body weight management on the teenagers in the age period of 7-18, and furthermore can supply an energy consumption value list of different movements and the daily nutrition requirement amount recommended values for aiming at the evaluation result, therebytruly realizing body weight health management.

The invention discloses the semifluid extract of deer foetus, which takes the deer foetus, deer born after the normal period of gestation and not fed by breast milk, American ginseng, medlar, eucommia bark, white paeony root, spina date seed, villous amomum fruit, safflower, echinacea, astragalus and honey as raw materials. The semifluid extract of deer foetus is prepared by the following steps of: pre-treating the deer foetus and the deer born after the normal period of gestation and not fed by the breast milk, preparing deer foetus powder and the powder of the deer born after the normal period of gestation and not fed by the breast milk from the deer foetus and the deer born after the normal period of gestation and not fed by the breast milk by adopting freeze-drying technology, compounding the deer foetus powder, the powder of the deer and the other components according to proportion, and performing bulking and sterilization to prepare the semifluid extract. The semifluid extract of deer foetus completely maintains the bioactive ingredients of the deer foetus and the deer born after the normal period of gestation and not fed by the breast milk, has the double effects of treatment and nourishing, and is particularly suitable to be taken by weak patients with immune dysfunction, female chronic pelvic inflammatory disease, leucopenia after cancer chemotherapy and radiotherapy, and the like.