45 results about "Cutoff function" patented technology

Methods and apparatus are described for providing a time-based warning indicating that the energy capacity of a primary energy source of a battery-powered computer has discharged to a low level, and using residual energy of the primary energy source to perform at least one pre-cutoff function. The time-based warning ensures that the warning is provided in a timely manner by overcoming problems caused by analog to digital converter voltage measurement accuracy limitations and flat battery operating voltage versus discharge curves. The primary energy source can be a rechargeable battery, which can also be the sole energy source for the computer. The battery provides power to operate the computer until the battery voltage discharges to the cutoff voltage. The methods and apparatus provide advantages because they reserve the residual energy in the battery to perform at least one pre-cutoff function within a first duration before the battery discharges to the cutoff voltage. For example, the residual energy can be used to retain data stored in the computer between opportunities to charge the battery. Some embodiments of the invention include hardware resources coupled with the processor to lock out power and application activation when the rechargeable battery has discharged to a predetermined hardware lockout voltage. The value of the hardware lockout voltage can be based on the battery retaining a residual energy sufficient for performing the corresponding pre-cutoff function within an amount of time that is expected to enable the user to perform the function.

The utility model discloses a controller of permanent magnetism structure based on pulse-width modulation technology, and comprises a winding power supply module and a pulse-width modulation controlling module, wherein the winding power supply module comprises a rectification filter circuit and a voltage-reducing chopper circuit connected with the rectification filter circuit; while the pulse-width modulation controlling module comprises a time delay circuit, a control signal regulating circuit and a PWM control circuit. The utility model adopts the working process that alternating current is first rectified and filtered, and then flows through the voltage-reducing chopper circuit in order to turn into required adjustable direct chopping voltage; then the voltage is loaded on the winding of the permanent magnetism structure; and a control impulse is output from the PWM control circuit and adjusts the control voltages on the ends of the winding by opening or closing a power switch in the voltage-reducing converter. The utility model can control the new permanent magnetism structure with automatic and specific cutoff function without separate tripping, and has the advantages of simple structure, compact, steady control process, strong anti-interference and low cost.

Each memory block has a plurality of memory cells, and word lines and bit lines connected to the memory cells. Precharge switches connect the bit lines to a precharge line. A switch control circuit controls an operation of the precharge switches and sets a cutoff function that turns off connection switches in a standby period in which no access operation of the memory cells is performed. Since connections of the bit lines and the precharge switch and those of the bit lines and the sense amplifier are cut off in the standby period, if a short circuit failure is present between a word line and a bit line, a leak current can be prevented from flowing from the word line to a precharge voltage line and so on.

Disclosed is a power source device having a standby power-cutoff function, which is to be used to charge a battery. The power source device comprises: a micro-USB connector (24) for connecting to the power source unit (20) of a smartphone when the battery of the smartphone or the like is to be charged; and a power generation unit (32) supplying DC charging power to the smartphone (20) from an AC input power source. The present invention includes: a control unit (33) having at least one microprocessor for controlling the overall operation and functioning of a power source device (30); a power supply/cutoff unit (34) supplying/cutoff the AC input power to the power generation unit (32) according to the control of the control unit (33); and a current-sensing unit (CT) connected so as to monitor the current from the power supply/cutoff unit (34), provide the control unit (33) with the current, and provide an indication of the charging state of the battery. The power source unit (20) of the smartphone also includes a first backflow-preventing unit (22) connected between the battery (21) and the control unit (33) so as to prevent the DC power from the power source device (30) from being directly applied to the battery (21) during charging, and the power source device (30) further includes a second backflow-preventing unit (31) which is connected between the DC charging voltage output terminal of the power generation unit (32) and the power supply voltage (Vc) of the control unit (33).

A mobile device having an overcurrent cutoff function. In a mobile device having at least one function module, the mobile device includes a main power supply which supplies power to the mobile device, a power detection unit which detects whether power from the main power supply to the mobile device is cut off, and generates a power cutoff signal when the power is cut off, a backup power supply unit which supplies a backup power to the mobile device when the power from the main power supply to the mobile device is cut off, and a control unit which converts potential levels of the data lines and control signal lines between the control unit and the function module to a predetermined potential level in response to the power cutoff signal. Such a mobile device can minimize the consumption of the backup battery built into the mobile device when the main battery supplying main power to the mobile device is detached from the mobile device, to thereby extend the time for preserving data stored in the mobile device due to the minimized consumption of the backup battery.

A switching-mode power supply (SMPS) for an image forming apparatus which may prevent an overvoltage supplied to the SMPS, and damage to circuits in the SMPS in the image forming apparatus. The SMPS includes a rectifying circuit to rectify an alternating-current (AC) voltage input from an external power supply source into a direct-current (DC) voltage, a transformer to transform the rectified DC voltage input to a primary coil and output the transformed DC voltage to a secondary coil, a main switch that is connected to the primary coil and switches an output of the transformer, a first overvoltage detecting unit to determine whether the rectified DC voltage is an overvoltage by comparing the rectified DC voltage with a first reference voltage, and a switching control unit to control a switching operation of the main switch based on a result of the determination.

The invention provides a traffic balance and energy-saving control method, a realizing method and a realizing device. The traffic balance and energy-saving control method comprises the following steps that: a wireless network controller receives traffic load information and configuration information reported by a base station, obtains a corresponding traffic balance strategy scheme and an energy-saving control scheme through calculation according to the traffic load information and the configuration information, and issues corresponding traffic information and control instructions to the base station according to the traffic balance strategy scheme and the energy-saving control scheme; and the base station receives the traffic information issued thereto from the wireless network controller, switches on/off a cell cutoff function according to the received control instructions, and/or switches on/off a BCCH (Broadcast Control Channel) carrier-frequency priority distribution function. According to the traffic balance and energy-saving control method, the realizing method and the realizing device provided by the invention, the traffic balance control and the energy-saving strategy adjustment can be dynamically carried out according to the traffic load information reported by the base station, so that the purposes of reducing resource waste and lowering base station power consumption are realized.

A printer system using inks, toners or developers with solvents therein is provided with a detector for volatile organic compounds assists in reducing potential accidents in the printer. The detector may be able to identify at least a threshold level of volatile organic in a gas phase in the printer, or may be able to identify various levels or a continuous metered level of volatile organic compounds (VOC's). An automatic warning, automatic signal, or even automatic cutoff function may be associated with the detector. The detector may be inside the printer or associated with a vent or generally positioned on or near the printer. One mode of detection operation described in detail is identification of changes in dielectric constant in a vapor phase or vapor stream that can be associated with changed levels of VOC in that phase or stream.

The invention belongs to the technical field of vehicle parts, and provides a vehicle oil saving control method; the judgment of safety machine stop conditions, air conditioner glide safety conditions and safety starting conditions is added; traditional deceleration oil cutoff function and starting/stopping function are used; and the further oil saving control is performed after an original vehicle deceleration oil cutoff state when an engine is going to be started. The vehicle oil saving control method uses the traditional deceleration oil cutoff function and automatic starting/stopping function, and adds the detection of the engine deceleration oil cutoff state and the detection of the engine rotating speed; when the vehicle is in the deceleration oil cutoff state, even if the rotating speed of an engine is lowered below 1400 r/m, the engine can be kept in a stop state without externally acting, so that the oil is continuously saved, the oil utilization rate is improved, and the environment is protected; and meanwhile, after the engine is in the stop state, since whether neutral glide safety conditions are satisfied is detected, the vehicle oil saving purpose can be achieved, and the driving safety can be guaranteed.

The invention proposes an assembly method for a camera system suitable for a mobile terminal, and the camera system comprises a transparent protection cover plate with an infrared cutoff function, a lens group, and an image sensor chip. The method comprises the step: assembling the last lens of the lens group and the image sensor chip into one body, wherein the lens and the image sensor chip forma cavity. The last lens is used for replacing optical glass and/or infrared filter on an image sensor chip in conventional packaging, and the distance between the last lens and an image sensor is therear working distance of the lens.

The invention provides an infrared focal plane detector packaging window and a manufacturing method thereof. The packaging window comprises a substrate, wherein an infrared optical thin film for wavelength cutoff is plated in the middle part of the front side of the substrate; an infrared optical thin film for wavelength cutoff is plated in the middle part of the back side of the substrate; and a metal thin film for packaging is plated on the periphery. The manufacturing method is as follows: the infrared optical thin films and the metal thin film are all plated by using a vacuum thermal evaporation method. The wavelength cutoff function of the packaging window and a vacuum packaging function are integrated, and two functions are simultaneously realized on the same substrate, thereby increasing the packaging yield, and solving the problem of vacuum air leakage of the original packaging window.

A system for approximating flux density of light on a human retina. A housing has an opening allowing light to pass to inside the housing. A baffle coupled to the housing replicates a facial cutoff function response for the light inside the housing. Two detectors are positioned to detect the light inside the housing. One detector produces a photopic spectral response function of the light inside the housing that approximately replicates a spectral response of the foveal cones in the retina. Another detector produces a scotopic spectral response function of the light inside the housing that approximately replicates a spectral response of rods in the retina. A processor coupled to the detectors calculates a mesopic flux density of the light inside the housing based on the photopic and scotopic spectral response functions.

A power supply device having an overvoltage cutoff function, an image display device, and a method of cutting off overvoltage are provided. The power supply device includes a switch unit which cuts off a power supply to the power supply device; and an overvoltage sensing unit which compares a voltage of the power supply device with a specified reference voltage, and if the voltage of the power supply device is higher than the specified reference voltage, generates an overvoltage cutoff signal to control the switch unit. The overvoltage cutoff signal is used to report a power supply cutoff state. Accordingly, the damage of the power supply device due to an unstable AC input voltage can be prevented and the user can be alerted to the overvoltage through the display of the power supply cutoff state.

A power converter device for achieving a stable braking operation, preventing excessive current to flow therein, when conducting DC braking on a permanent synchronous motor, comprises: a switching circuit for converting DC to AC; a PWM controller means, for controlling ON or OFF of said switching circuit; a means for detecting or estimating current flowing through a permanent magnet synchronous motor; and a means for executing DC braking of said permanent magnet synchronous motor, wherein there are provided a DC braking maximum current setup value, which is determined from an outside or is determined in advance within an inside, and a PWM all-phases cutoff function and a zero vector output function within said PWM controller means, within said PWM controller means, whereby the PWM all-phases cutoff and the zero vector output are repeated within said PWM controller means, if a current value, which is obtained by said means for detecting or estimating the current, exceeds said DC braking maximum current setup value, when running DC current to the permanent magnet synchronous motor, so as to execute DC braking for obtaining a braking power.

The invention relates to a cutoff and pressure regulation integrated high-precision gas pressure regulator. A valve body is provided with an air inlet and an air outlet; upper part inside the valve body is provided with a valve core; a connecting shaft is arranged inside the valve core; the bottom of the connecting shaft is fixedly connected with a valve pad; a clearance between the valve pad andthe valve core forms a valve opening; a sliding sleeve is arranged outside the valve core; the sliding sleeve is externally sleeved with a cutoff valve pad; the upper end of the sliding sleeve is provided with a compression spring; a main coating is provided with a pressure plate; the pressure plate is provided with a main spring and an adjusting screw rod; a cutoff device is fixedly connected with the valve body through a connecting sleeve; a hook arranged in the cutoff device is used for hooking the lower part of an outwards-protruding part of the sliding sleeve; the balance of the sliding sleeve can be maintained under the effects of the compression spring and the hook; the cutoff device communicates with downstream gas; the hook is separated from the sliding sleeve when the pressure ofthe downstream gas reaches a set value; and the cutoff valve pad moves downwards to seal the valve core. The cutoff and pressure regulation integrated high-precision gas pressure regulator provided by the invention ingeniously realizes the cutoff function of the gas pressure regulator and improves the shutoff pressure precision of the pressure regulator.

This invention relates to a method for imitating data flow cutoff, applying logical chip system with imitating data flow cutoff function. It comprises the following steps: A, the logical chip will transfer the data flow between data resource and rear circuit, deciding whether it reach to cutoff space, if it is, go to step B; if not, go on step A; B, knocking off the data flow, deciding whether it reach to the cutoff time according to the transmitted signal, if it is, return to step A; if not, go on step B; C, closing the test, blinding the cutoff function. Said invention can realize imitating data flow cutoff with various speed and interface on line, and control the type, time and space of the cutoff precisely.

A power supply system having a power supply cut-off function in an emergency is provided. The present system includes a power supply device for receiving and supplying external input power to a device for power supply, a remote controller for controlling an operation of the power supply device according to a remote control signal from a remote place, an uninterruptible power supply device for supplying operation power to the remote controller, a first line switch for, when a power switch is turned on, supplying the external input power to the power supply device and the uninterruptible power supply device, and a second line switch disposed between the power supply device and the first line switch and cutting off the external input power supplied to the power supply device via the first line switch when the uninterruptible power supply device does not output the power. According to the present invention, even when the remote controller is out of order in the emergency, the power supply of the power supply device can be cut off using the interrupted power supply device to thus enhance stability and reliability of the equipment.

The invention provides a water meter verification device and system and belongs to the field of meter verification. The device comprises a water supplying device, a first water meter detection channel, a second water meter detection channel, a water meter inlet detection device and a water meter outlet detection device. M water meters can be arranged in the first water meter detection channel, N water meters can be arranged in the second water meter detection channel, M and N are integers which are larger than or equal to one, and cutoff detection tubes which are used for detecting the cutoff function of the water meters is further arranged; the measurement water inflow quantity of the water meters measured by the water meter inlet detection device and the actual water discharge quantity of the water meters measured by the water meter outlet detection device are compared, and accordingly a verification result which represents whether or not the accumulative flow of each water meter is right and the cutoff function of each water meter is normal can be obtained. The water meter verification system is used for controlling the water meter verification device to complete verification. Multiple water meter detection channels with the cutoff detection tubes share a water supply device, the use ratio of kinetic energy of the water supply device is improved, and meanwhile the water meters can be subjected to cutoff function detection.

A light emitting diode lamp is composed of a light emitting diode, a band-pass filter and a light angle adjuster. The filter has a light cutoff function to cut off a light ray with a specific wavelength. The light angle adjuster allows the light rays emitted from the diode to be incident on the filter at incident angles of less than or equal to a maximum incident angle up to which the filter is capable of exerting the light cutoff function. The light angle adjuster is a reflector. The diode is mounted to a bottom portion. The filter is mounted to an opening. On an imaginary cross section including the optical axis, an angle formed between the optical axis and a straight line is less than or equal to the maximum incident angle, the straight line connects the emission center and an edge of the opening.

The invention discloses an electric iron with a steam station and an iron independent automatic power cutoff function. The electric iron comprises a base (1) and an iron (3), wherein the iron (3) is arranged on the base (1), and a base switch (5) which can induce whether the iron (3) is arranged on the base (1) or not, so as to control the different automatic power cutoff ways of the iron (3), is arranged on the base (1). By using the electric iron, as a structure that the base switch on the base induces whether the iron is arranged on the base or not, so as to control the automatic power cutoff of the iron is adopted, the damage to clothing due to ironing when a person leaves the steam station can be reduced; risks that a property is injured and serious consequences such as a fire hazard are even caused are avoided; and electric energy can be saved. The electric iron with the steam station and the iron independent automatic power cutoff function is ingenious in design and excellent in performance, and is convenient and practical.

The present invention relates to a multi-tap having MoCA cutoff function, which includes: a low-pass filtering unit used for inputting a RF signal; a directional coupler used for outputting the RF signal; a first-stage splitter, an input end thereof is coupled to a second output end of the directional coupler for attenuating the RF signal to a first value so as to be outputted; and at least a second-stage splitter, an input end thereof is coupled to an output end of the first-stage splitter for attenuating the RF signal to a second value so as to be outputted to at least a user end.