172results about How to "Adjust the speed" patented technology

The invention provides a method, a system and a device for power fail safeguard of data. The device comprises a detection unit, a management unit and a fan. The detection unit is used for sending abnormality signals to the management unit after abnormality of an external power source is detected in real time. The management unit is used for generating a target duty ratio carrying first fan control signal and sending the first fan control signal to the fan after the abnormality signals sent by the detection unit are received. The fan is used for adjusting a rotation speed according to the target duty ratio carrying first fan control signal. The method, the system and the device for power fail safeguard of data have the advantage that system power consumption can be quickly reduced after power failure.

The invention provides a speed regulation method and device for a server fan and a 64-CPU server. The method comprises the steps that the last temperature, the current temperature and the set temperature of a target object and the current duty ratio of the corresponding target fan are firstly determined, the duty ratio is calculated and regulated on this basis, and therefore a corresponding new duty ratio is determined; and then the rotating speed of the target fan is regulated according to the determined new duty ratio, the process circulates in this manner, and therefore real-time and accurate regulation of the rotating speed of the fan based on temperature changes of the target object is achieved. Thus, according to the scheme, the speed regulation stability of the server fan can be improved.

The invention relates to a method for controlling the rotation speed of a fan. The method sequentially comprises a detection step, a judging step, a regulating step and a confirming step; the detection step is used for detecting an operation flow resistance value generated by the rotation of the fan; and a controller is utilized for the judging step to judge whether the operation flow resistance value is less than a set flow resistance value, if the operation flow resistance value is less than the set flow resistance value, the regulating step begins to increase the rotation speed of the fan, and the confirming step is used for maintaining the rotation speed of the fan. The rotation speed of the fan is regulated by utilizing the comparison of the operation flow resistance value and the set flow resistance value, not only are additional construction members not required to be added, but also because the air out quantity is in contrast to the shielded ratio of the fan, and the air out amount is controlled by the regulated flow resistance value, the fan can still maintain the optimum air out quantity and the optimum static pressure value at a fixed shielded ratio.

The invention discloses a frequency conversion control system and method for a constant temperature and humidity device. The frequency conversion control system comprises a temperature sensor, a PID controller, a D / A conversion unit and a frequency converter. The temperature sensor is used for measuring the actual condensing temperature of a condenser. The PID controller is used for calculating the frequency value of the frequency converter, needing to be executed, through a PID calculation method according to the difference between the measured actual condensing temperature and the set ideal condensing temperature. The D / A conversion unit is used for converting the frequency value, obtained through the calculation of the PID controller, of the frequency converter into an analog signal capable of being recognized by the frequency converter. The frequency converter is used for regulating the rotational speed of a fan according to the corresponding analog signal to control the condensing temperature of the condenser in a real-time manner to enable the condenser to reach the ideal condensing temperature and the condensing pressure to be higher than the evaporation pressure limit. The frequency conversion control system is reasonable in design, and perennial stable operation of the constant temperature and humidity device can be realized.

The invention relates to an intelligent adjusting method for noise of an extractor hood. An ideal rotating speed-noise relation list between the corresponding operating rotating speed and the noise range value of the extractor hood in an ideal operating state is established in advance; the real-time external noise value at the air inlet of the extractor hood and the real-time operation noise valueduring stable operation of the extractor hood are detected and the actual operation noise value of the extractor hood under the actual noise condition is accurately obtained in a manner of combiningthe internal noise and the external noise of the extractor hood; the current running rotating speed of the extractor hood is adjusted to the running rotating speed corresponding to the running noise true value in the ideal rotating speed-noise relation list when presence of the user below the extractor hood is determined according to the detection of the real-time back pressure value of the smokeexhaust channel and the temperature in the preset distance range below the range hood so that the rotating speed of the extractor hood during operation can be adjusted along with the generated noise and the noise of the extractor hood during operation is adjusted to the noise range in the ideal state and the influence on the use experience of the user is prevented.

The embodiment of the invention discloses a control method and device and electronic equipment, which are applied to the electronic equipment. The electronic equipment is internally provided with a liftable camera module, a detection assembly and a driving device; the detection assembly comprises at least one magnetic field sensor and a magnet. The magnet is fixedly connected with the liftable camera module. The method is characterized by comprising the following steps: in the process that the driving device drives the liftable camera module to ascend, acquiring magnetic field change information through the at least one magnetic field sensor, and adjusting the rotating speed of the driving device based on the magnetic field change information. Through the method, the rotating speed of thedriving device for driving the liftable camera module can be adjusted on the basis of the detected magnetic field change information, so the problem that the liftable camera shrinks automatically dueto long-time high-rotating-speed stalling of the driving device is avoided.

The invention relates to a rotation speed control method for an air conditioner compressor, which comprises the following steps: setting the rotation speed value of an air conditioner compressor into N rotation speed shifts from low to high, and setting a corresponding rotation speed adjusting coefficient interval and a rotation speed instruction value; acquiring indoor temperature and outdoor machine temperature in real time; according to a cooling temperature value set for an air conditioner, the indoor temperature, an outdoor machine standard temperature setup value and the outdoor machine temperature, calculating a rotation speed adjustment coefficient; according to the calculated rotation speed adjustment coefficient, confirming the rotation speed adjustment coefficient interval, confirming a corresponding rotation speed instruction value; adjusting a current rotation speed value of the air conditioner compressor to be equal to the calculated rotation speed instruction value. By adopting the rotation speed control method for the air conditioner compressor, the service life of the air conditioner compressor can be prolonged, and the cooling effect of the air conditioner compressor can be improved.

Disclosed is a pneumatic conveying installation, in particular a cut tobacco conveying installation, for conveying a material to be conveyed, in particular cut tobacco, in a gas stream, comprising a plurality of conveying lines (10, 11, 12) that are filled with material to be conveyed in the gas stream, in particular the air steam, and comprising at least one separating device (2) for each of the conveying lines (10, 11, 12). The separating device (2) is integrated into each of the conveying lines (10, 11, 12) and is designed so as to separate the material to be conveyed and to further conduct the remaining gas stream that has been substantially separated from the material to be conveyed in the conveying line. A regulation unit (31, 32, 33) is arranged downstream of each separating device (2) in the conveying line, which regulation unit comprises and regulates a throttle device so as to set a predefined conveying speed in the respective conveying line (10, 11, 12) by setting a throttle level above or equal to a predefined minimum value (Rmin), wherein the conveying installation has a common conveying device for conveying the material to be conveyed through the conveying lines (10, 11, 12). The conveying installation comprises a control and regulation device (5), which communicates with the conveying device (4) and which is designed to record the momentary throttle levels of the throttle devices and to vary the conveying power of the conveying device (4). The control and regulation device (5) is further designed to vary the conveying power of the conveying device (4) such that the throttle level of at least one throttle device lies, in each case, in the range of the minimum throttle level (Rmin).

The present invention discloses a wire stranding roller and a new method for the same, in a LP insulator being mounted at a cross arm of pin long column and insulating and supporting a high voltage wire, which drastically improves workability and greatly reduces construction cost because the location of a wire don't need to be changed after the stranding and wire pulling, which is easy to work with and is very effective in reducing labor cost and preventing a safety accident because it can easily perform wiring and removing works no matter how large the weight of the wires would be, which is capable of precisely adjusting a dip(degree in which the wire hangs down) because the wire are placed on an insulator, which is to be mounted, during a wire pulling work and also which can solve the problem of securing a work space when carrying out the work applying an uninterruptible method by forming a open-and-shut roller capable of wire insertion and a wire stranding roller consisting of an insulator coupling opening and directly coupling them on the upper surface of the LP insulator.

The invention relates to a self-driven sewage cleaning water filter, which comprises an upper casing, a lower casing, an impeller speed adjuster, a rotating speed annunciator, a balance shaft, a filter screen component, a sewage discharge branch pipe, a micro-impeller and a sewage discharge pipe. According to the self-driven sewage cleaning water filter, the self-driven sewage cleaning and discharging function is realized; during sewage discharging, a sewage discharge valve on a sewage discharge pipe 3 is opened, so that the water filter is in a sewage cleaning and discharging working condition; a sewage discharge branch pipe 15 is driven by the impeller 4 to rotate, so that pipe orifices on two arms of the sewage discharge branch pipe 15 are sequentially communicated with the washed filter screens of units, sewage attached to the filter screens are backwards washed by clean water, and effluent is discharged through the sewage discharge pipe 3, so that automatic sewage cleaning and discharging function is realized; and when the sewage valve is closed, the branch pipe is full of static pressure water, the sewage cleaning and discharging working condition is ended, and the water filter is recovered to the normal filtering working condition. According to the self-driven sewage cleaning water filter, redundant water energy in the water filter is fully utilized to drive the micro-impeller to realize self-driving, so that the technical effects of saving energy and simplifying structure are achieved.

The invention relates to a massage shower for brushing the back. The massage shower comprises an upper cover, a lower cover, a protrusion plate, a worm wheel and a worm; the worm wheel and the worm are matched, so that a rotary handle adjusts the worm wheel to rotate to drive the worm to move up and down; protrusions can be hidden inside the shower and can also protrude out of the lower surface ofthe lower cover, so that the length of the parts, extending out of water outlet holes, of the protrusions can be adjusted, and the functions of back brushing and massaging can be realized; and meanwhile, based on the condition that the taper angle a of the water outlet holes is larger than the taper angle b of the protrusions, so that when the protrusions move downwards, gaps between the protrusions and the water outlet holes become smaller, the water flow speed is increased, and the function of adjusting the water flow speed can be simultaneously achieved.

The invention relates to a material mixing and fermenting device. The material mixing and fermenting device comprises a tank body, a temperature measuring device, a rotating shaft, blades, a defoaming device, three tank body supports, an electric stove plate, a motor, a shaft coupling, a frequency converter and a motor support. The top of the tank body is provided with a feed port, a lifting lug and a manhole, the tank bottom is in a flat bottom structure, a discharge port is formed in the tank bottom, the temperature measuring device is positioned on the side wall of the tank body, and the temperature measuring device can directly observe a temperature value in the tank from the outside of the tank; the top of the rotating shaft is connected with the shaft coupling, and the bottom of the rotating shaft is articulated with a support seat on the bottom surface in the tank body; the blades are crisscross arranged on the rotating shaft; the defoaming device is positioned on the rotating shaft and can timely eliminate liquid bubbles produced by stirring; the three tank body supports are uniformly distributed on the side wall of the tank body; one end of the shaft coupling is connected with the rotating shaft, and one end of the shaft coupling is connected with the motor; the frequency converter is connected with the motor and can adjust the rotational speed of the motor; the material mixing and fermenting device has the advantages of simple heating structure, low cost, convenience in maintenance, uniformity in material mixing, safety and reliability.

The invention relates to an environment sampling and monitoring system and method based on fine particles. The system comprises an environment detection device, a fine particle sampling device, and a main control unit. The environment detection device sends detected environment parameters to the main control unit. The sampling device comprises a fine particle cutter, an automatic weighing device, a sampling fan, and a static pressure cabin pressure detecting unit. The fine particle cutter grades the sampled fine particles and delivers the graded fine particles to the automatic weighing device. The automatic weighing device weighs the fine particles. The static pressure cabin pressure detecting unit and the automatic weighing device send signals to the main control unit. The main control unit outputs a control signal to the sampling fan. The main control unit determines the actual sampling flow of fine particles according to the static pressure and controls the rotation speed of the sampling fan according to the actual sampling flow. The provided method comprehensively takes the environment parameters of a monitoring site and the formation and flowing situation of fine particles into account, the source of discharged fine particles is traced, and the problem that the source of discharged fine particles is not easy to find by the conventional monitoring method is solved.