41results about How to "Avoid useless consumption" patented technology

A power saving method in a wireless LAN system is disclosed for estimating at a terminal station whether or not data destined thereto is buffered in a base station, and temporarily stopping a downlink data receiving operation when it is estimated that no such data is buffered, thereby preventing the consumption of a bandwidth for needless wireless frame sequences. Upon receipt of a beacon management frame Beacon (TIM) from the base station, the terminal station stores TIM information in a memory. The TIM information indicates whether or not downlink data destined to the terminal station is buffered in the base station (indicating that the data is buffered when it is at “1” and that the data is not buffered when it is at “0”). At a PS-Poll transmission timing, the terminal station references the memory and stops the transmission of PS-Poll when the two latest values of TIM are “00.”

A brake control apparatus for controlling brakes of a vehicle having wheels, the apparatus including a stopped-state detecting portion which detects, based on a speed of at least one of the wheels detected by at least one wheel-speed sensor, a stopped state of the vehicle; an operation-force limiting portion which limits, based on a detection of the stopped state of the vehicle by the stopped-state detecting portion, an operation force of at least one of the brakes, such that an upper limit of the operation force is an intermediate level of an operation-force range used when the stopped state is not detected; a sensor ignoring portion which ignores, when an electric voltage supplied from a power source to the at least one wheel-speed sensor is not higher than a reference value, the at least one wheel-speed sensor; a limitation canceling portion which cancels, when the sensor ignoring portion ignores the at least one wheel-speed sensor, a limitation of the operation force by the operation-force limiting portion; and a rapid-change restraining portion which restrains a rapid change of the operation force caused by a cancellation of the limitation of the operation force by the limitation canceling portion.

An internal combustion engine includes a variable compression ratio mechanism made up of a case-side bearing-forming portion, a block-side bearing-forming portion, and a shaft-shaped drive portion. The case-side bearing-forming portion is formed in an upper portion of a crankcase. The block-side bearing-forming portion extends outward from a lower end portion of an outer wall surface of the cylinder block. The block-side bearing-forming portion is linked to the case-side bearing-forming portion by the shaft-shaped drive portion. Slit-shaped stress reduction groove portions each having an opening in a region between the block-side bearing-forming portion and cylinder bores are formed in a lower surface of the cylinder block. Therefore, even when the block-side bearing-forming portion presses the outer wall surface, the stress reduction groove portions reduce the stress, so that the deformation of the wall surface of each cylinder bore can be restrained.

A sensor node for intermittently sensing data in a short cycle includes a control unit for acquiring information by driving the sensor, a radio communication unit for transmitting the information acquired by the control unit and a battery for supplying the control unit. The control unit includes a clock supply unit (RTC) for supplying the control unit with clocks at a predetermined frequency. A sensor control unit starts the supply of power to the sensor when the measurement period has begun, maintains the power supply to the sensor even if the control unit has shifted to the standby state during the measurement period, and shuts down the power supply to the sensor when the measurement period has been completed. A measurement unit is also provided for acquiring information from the sensor every time the latter has shifted to the operational state.

A self-luminous apparatus is disclosed wherein a deterioration amount difference between different pixels can be eliminated accurately to correct a sticking phenomenon while the self-luminous apparatus is used. In the self-luminous apparatus, a deterioration amount difference appearing between a correction object pixel and a reference pixel within a first light emission period of time is calculated first using a deterioration ratio derived from gradation values of the pixels. Then, a deterioration ratio for correction for the correction object pixel necessary to eliminate the calculated deterioration amount difference within a second light emission period of time is derived using a deterioration ratio of the reference pixel. Thereafter, the derived deterioration ratio for correction is converted into a corresponding gradation value, and the correction object pixel is driven to emit light with the converted gradation value.

An ink-jet printer, including an ink-jet recording head having an ink inflow passage including an ink inlet, and an air-discharge passage which allows the ink inflow passage to communicate with an atmosphere; an air-discharge valve which selectively opens and closes the air-discharge passage; an ink tank which stores the ink and which has an ink outlet and an air inlet; a connector having an ink supply passage which communicates, at one end thereof, with the ink outlet of the ink tank and communicates, at an other end thereof, with the ink inlet of the recording head; an air supplying device which supplies the air to the ink tank via the air inlet thereof; an obtaining portion which obtains one of an elapsed time, t, from a reference time, and a volume, V, of an air present in the ink supply passage and the ink inflow passage at the elapsed time t, based on an other of the elapsed time t and the air volume V, and a following relationship: V=a·e^bt, where a and b are coefficients and e is a base of a natural logarithm; and a control portion which controls, based on the obtained one of the elapsed time t and the air volume V, an operation of the air supplying device and/or the air-discharge valve, so that the volume V of the air at the elapsed time t is discharged through the air-discharge passage opened by the air-discharge valve.

An ECU starts an engine when an operation to deactivate the hybrid system has been performed during travel of the hybrid vehicle and then an operation to activate the hybrid system is performed before a hybrid vehicle stops.

An electronic ballast is capable of inhibiting ballast shutdown caused by erroneously determining a fault condition. The ballast includes a DC power supply circuit for outputting DC power, a power conversion circuit that appropriately converts DC power outputted by the DC power supply circuit and outputs it to a discharge lamp, a DC voltage droop detection circuit for determining existence/absence of a fault condition in the DC power supply circuit 1, a lamp end of life detection circuit for determining existence/absence of a fault condition of the discharge lamp; and a sequence control circuit and a shutdown control circuit that control at least the power conversion circuit according to detection by the DC voltage droop detection circuit the discharge lamp life detection circuit. When a fault is determined in both the DC voltage droop detection circuit and the discharge lamp life detection circuit, an operation according to the detection of the DC voltage droop detection circuit, the sequence control circuit lowers the output of the power conversion circuit 2 is performed in priority to an operation that, according to the detection of the discharge lamp life detection circuit, the shutdown control circuit shuts down the power conversion circuit

The invention discloses a corridor light control method and device based on a pressure sensor. The method is as follows: the pressure sensor is laid on the ground of a corridor head and the pressure sensor outputs a low level when no person passes; and the pressure sensor outputs a high level when stepped on; output signals of the pressure sensor, a photoconductive resistor and a sound sensor are detected at the same time by a single-chip microcomputer; and when the output signals of the pressure signal, the light sensor and the sound sensor satisfy triggering conditions at the same time, the single-chip microcomputer outputs a high level and lights on a corridor light through a relay. The corridor light control method and device adopt the single-chip microcomputer as a control element and prevents error triggering through multi-condition triggering so that electrical-energy useless consumption caused by the error triggering is prevented. The corridor light control method and device based on the pressure sensor are capable of setting accurately pressure and time through a man-machine interaction unit so that when a person reaches a floor, a light of the floor lights on and after the person leaves, the light lights off automatically so that corridor lighting needs are met and electrical-energy saving is also facilitated. Therefore, the corridor light control method and device based on the pressure sensor are high in practicality.

The invention belongs to the technical field of industrial energy-saving control and particularly relates to an air compressor energy saving system. The air compressor energy saving system comprises an air compressor, an air transmission main pipeline, air equipment and a controller which are mutually and sequentially connected, wherein the controller is connected with the air compressor. A nozzleis fixedly arranged in the air transmission main pipeline, and the orientation of a spraying opening of the nozzle is parallel with the central axis of the air transmission main pipeline. A branch pipeline communicating with the air transmission main pipeline is fixedly arranged on the air transmission main pipeline, and an air pressure detecting device is fixedly arranged on the branch pipeline.A blocking piece hinged to the air transmission main pipeline is arranged in the air transmission main pipeline, and an elastic device is fixedly arranged between the blocking piece and the air transmission main pipeline. An angle measuring device for measuring the swinging angle of the blocking piece is fixedly arranged on the air transmission main pipeline, and the air pressure detecting deviceand the angle measuring device are both connected with the controller. Through use of the air compressor energy saving system, automatic operation and shutdown of the air compressor under unattendedoperation can be achieved, thus energy consumption is effectively reduced, the cost is saved, and the working efficiency is improved.

The invention relates to a rolling bearing device comprising a bearing portion (20) having an inner ring (21), an outer ring (22), a plurality of rolling elements (23) which are arranged between the inner ring (21) and the outer ring (22), and a cage (24) holding the plurality of rolling elements (23); and an oil supply unit (40) disposed adjacent to the bearing portion (20) in an axial directionand including a pump (43) having an injection port (50) from which lubricating oil is injected as an oil drop into the bearing portion (20). The oil supply unit (40) further includes a wind shieldingportion (51) surrounding a passage area through which the oil drop injected from the injection port (50) passes, the wind shielding portion (51) is provided with no clearance between the wind shielding portion (51) and the pump (43 ) in which the injection port (50) opens, and the wind shielding portion (51) is opened toward a target in the bearing portion (20).

The invention relates to an additive manufacturing temperature measurement and control device, and belongs to the technical field of temperature measurement and control. The additive manufacturing temperature measurement and control device comprises a first temperature detector, a first temperature regulator, a second temperature detector, a second temperature regulator, a data storage device and a main controller, wherein the main controller is connected with the first temperature detector, the first temperature regulator, the second temperature detector, the second temperature regulator and the data storage device. According to the additive manufacturing temperature measurement and control device, on the basis of existing surfacing, stirring and welding are combined, that is, an argon arc welding nozzle and a stirring head are combined, so that components of a surfacing layer are uniform; and on the basis, the first temperature detector, the first temperature regulator, the second temperature detector and the second temperature regulator are matched, so that the surfacing temperature and the stirring temperature are measured and controlled in real time, the standard operation temperature of surfacing and stirring is guaranteed, and the forming precision is further improved; and safe and reliable operation of additive manufacturing equipment is guaranteed.

The invention relates to the technical field of natural language processing, and particularly discloses a text regularization method and device, electronic equipment and a storage medium. The regularization method comprises the steps: replacing regular meta-characters in a regular expression to obtain a first character string; segmenting the first character string to obtain at least one second character string; generating a first dictionary according to the at least one second character string, and replacing the first character string according to the first dictionary to obtain a third character string; generating a second dictionary according to the first dictionary and a first text, wherein the first text is a text to be regularized by using the regular expression; converting the third character string into a bit operation formula according to the second dictionary, and obtaining an operation result of the bit operation formula; and determining whether to regularize the first text by using the regular expression or not according to the operation result.

The embodiment of the invention provides a leaky cable control method and a leaky cable, the leaky cable control method comprises the following steps: providing the leaky cable, dividing the leaky cable into at least an initial section, a transition section and a tail section, arranging one or more radiation units in each of the initial section, the transition section and the tail section, arranging the initial section at two ends close to the leaky cable, and arranging the transition section between the initial section and the tail section; and controlling the performance parameters and/or the structure parameters of the radiation units in the initial section, the transition section and/or the tail section, so that the transmission performance of the initial section is superior to that of the transition section and the tail section, and the radiation performance of the leaky cable of the tail section is superior to that of the transition section and the initial section. In this way, 5G signal energy can be evenly distributed in the leaky cable, the levels of the signals from the initial segment to the tail segment are nearly the same, useless consumption caused by too high energy at the initial segment is avoided, the coverage distance of 5G information source equipment can be greatly increased, and the 5G communication wireless coverage problem in long and narrow areas such as subways and high-speed railway tunnels is solved.