43results about How to "Realize multi-level control" patented technology

The embodiment of the invention provides an energy recovery controlling method and device for a range extending electric automobile. The method mainly comprises the following steps: when a range extender of the electric automobile operates, acquiring the generated output of the range extender of the electric automobile Pzc and the braking recovery power Pzd under braking or backing up sliding working conditions according to automobile speed information of the automobile; adding the generated output of the range extender Pzc and the braking recovery power Pdz to obtain precharge power Pyc; comparing the precharge power Pyc and maximal permitted charge power of a power battery Pyx; confirming current applied braking recovery power of the range extender of the electric automobile according to the comparison result. According to the invention, charge power under a range extending working mode is supervised and limited according to rated permitted charge power; when precharge power is higher than the rated permitted charge power, energy recovery is conducted by gradient limitation; normal output of the range extender power is ensured while efficiently protecting the charging power of the power battery to be within a safe range; the range extender is enabled to work in optimal operating state as far as possible.

The invention provides a control method and device for an automobile electronic fan. The control method includes: receiving an air conditioner pressure signal, a vehicle speed signal, and an engine water temperature signal; operating the air conditioner pressure signal, the vehicle speed signal, and the engine water temperature signal according to a preset algorithm so as to acquire the duty ratio meeting a current condition; and controlling the electronic fan to run according to the current duty ratio. The control method can adopt a PWM (Pulse Width Modulation) manner to control the electronic fan according an actual demand, can adjust the duty ratio and control the electronic fan to run according to the duty ratio, and then can achieve multilevel control of the electronic fan. Compared with two-level speed adjustment manner of resistance speed adjustment or relay speed adjustment, the control method and device can adjust the rotation speed of the electronic fan according to the actual demand, and can reduce noise on the premise of meeting the respective function of the electronic fan.

The invention relates to a temperature-sensitive humidity-sensitive functional building material and a preparation method thereof. The functional building material is a plate made from the following ingredients in parts by weight: 40-60 parts of cementing material, 6-12 parts of composite temperature control material, 15-30 parts of semi-carbonized plant fiber, 10-25 parts of filling, 0.5-2 parts of foaming agent, and 0.05-0.2 parts of foam stabilizer. The preparation method comprises the following steps of: uniformly mixing all the ingredients, adjusting the ratio of water to materials to 0.30-0.45 to prepare the plate, curing the plate in an environment at the temperature of 25 DEG C and relative humidity not less than 80% for 7 days and then drying the plate to obtain the temperature-sensitive humidity-sensitive functional building material. Therefore, the temperature-sensitive humidity-sensitive functional building material provided by the invention can be used for effectively improving the comfort of an indoor environment, is simple in production and construction process, can be widely applied to the inner walls of an existing building and a new building, and is of a great significance in energy conservation, emission reduction and circular economy development.

The invention discloses a self-service hotel check-in method and system based on multi-level permission allocation. The method comprises the steps that: a user registers at a hotel server as a room booking user through personal identity information; after the room booking user carries out room booking, upload of identity information of a check-in user and payment through the hotel server, and room booking user obtains first level permission from the hotel server; the check-in user enters biometric identification characteristics by means of the first level permission through a user terminal and a hotel terminal arranged at a hotel site, and the check-in user obtain second level permission capable of opening a lock of a booked room through first level checking; and the check-in user carries out consumer goods use application through the hotel terminal and obtains third level permission of using consumer goods in the booked room after second level checking. According to the method and the system, after the user obtains the first level permission, the user can complete the check-in operation of the hotel with self service, the check-in efficiency is improved, the user can obtain multiple levels of permission according to different conditions, the management of guest rooms by the hotel is facilitated, and the management of a check-in user in a same room by the user is facilitated.

The invention discloses a gas flow control device which comprises a gas inlet channel, a gas outlet channel and a plug for sealing an inlet of the gas outlet channel. The plug is connected with an armature; the armature is connected with the gas inlet channel through a spring; a coil group is arranged on the periphery of the armature; when the coil group is electrified, the plug can be applied with forces with different magnitudes through the armature; and when the coil group is not electrified, all armature or part of the armature is located in the encirclement of the coil group. The invention further discloses a control method of the device, and a system adopting the device. According to the gas flow control device, the control method of the device, and the system adopting the device provided by the invention, different groups of coils in the coil group are electrified so as to apply the forces with different magnitudes to the plug, so that multi-grade control of a gas flow is realized. When the coil group stops being electrified, a sealing effect of the plug can be more reliable through the superposition of an elastic force of the spring and a gas pressure. When the plug is opened, except for the gas outlet channel, no gap exists for the gas to contact the outside, so that the gas can be prevented from leaking, and the device has a better anti-leakage function compared witha traditional electromagnetic valve.

The invention discloses an axial-flow type safety block valve and an overpressure cut-off control system thereof. The axial-flow type safety block valve comprises a left valve body, a right valve body, a valve seat, a valve element, a valve rod, a valve element sleeve, a piston sleeve and a piston. Inlet space is formed by the left valve body, the valve seat and the valve element. The valve element is arranged in the valve element sleeve in a sliding connection manner. Left space is formed by the valve element and the inner side of the valve element sleeve. Damping space is formed by the rightside of the valve element sleeve, the inner side of the piston sleeve and the left side of the piston. A reset spring is arranged in the damping space. Right space is formed by the piston sleeve, thepiston and the left side of an inner sleeve of the right valve body. A signal medium hole is formed in the piston sleeve. The right space communicates with an outlet of an overpressure control valvethrough the signal medium hole. The axial-flow type safety block valve needs no external energy sources when in work, and carries out automatic cutting by utilizing the natural pressure energy of media. The axial-flow type safety block valve is low in pressure loss, high in flow capacity and low in noise when in work, has the functions of single overpressure cutting, multi-level overpressure cutting, remote control and the like, and is especially suitable for high-flow conveying occasions of natural gas long-distance transport pipelines, gas distributing stations and the like.

The invention discloses a multifunctional thermoelectric air conditioner fan which comprises an air conditioner fan component and a vertical rod component. The air conditioner fan component comprises a power component and a blade unit, and the power component comprises a power device and a rectifying circuit which are installed inside a cover; a heat conduction metal plate is installed on the front portion of the cover, a thermoelectricity module used for controlling the temperature of the heat conduction metal plate is arranged behind the heat conduction metal plate, one end of the thermoelectricity module is connected with the heat conduction metal plate, and the other end of the thermoelectricity module is connected with heat dissipation fins; the blade unit is arranged in front of the heat conduction metal plate and connected with the power device, and gratings is arranged outside the blade unit; the rectifying circuit provides direct currents for the thermoelectricity module and the power device; the vertical rod component comprises a vertical rod and a base, the vertical rod is connected with the cover, and switch buttons are arranged on the vertical rod; the base is arranged at the bottom end of the vertical rod. According to the air conditioner fan, a traditional fan is combined with the thermoelectricity module, refrigeration and heating can be achieved, the requirements in different seasons are satisfied, the indoor comfort is improved, the structure is simple, and no pollutants are generated.

The invention discloses a multistage spiral magnetorheological absorber piston assembly. The piston assembly mainly comprises a piston rod, a piston, a sealing ring and a coil, wherein the piston is fixed at the end part of the piston rod through a bolt; the sealing ring and the coil are embedded in a groove of the outer surface of the piston; the sealing ring is used for isolating oil in an upper cavity from that in a lower cavity of the piston; the coil can generate a magnetic field when electrified; the magnetic field direction is perpendicular to a spiral runner in the piston to regulate the viscosity of magnetorheological fluid flowing through the runner, so as to change the damping force of the whole absorber. The influence of the magnetic field on the magnetorheological fluid in the spiral runner is maximal theoretically, and the action area of the magnetic field is wider, so that the damping force regulating range can be enlarged to a large extent, multistage control of the damping force can be implemented, the regulating range of the damping force can be enlarged by more spiral runners, and the coil turns can be appropriately reduced. Therefore, the heat value is lowered, and the service life is prolonged.

The embodiment of the invention discloses a multi-stage control method and device for brightness of an LED lamp, a rearview mirror and a storage medium. The method comprises the steps of acquiring brightness adjustment class of the LED lamp in an intelligent rearview mirror; adjusting a signal parameter of a voltage output signal according to the brightness adjustment class; and providing the adjusted voltage output signal used as a power supply for the LED lamp in the intelligent rearview mirror so as to adjust brightness of the LED lamp in the intelligent rearview mirror. According to the method disclosed by the embodiment of the invention, the brightness of the LED lamp in the intelligent rearview mirror is adjusted by acquiring the brightness adjustment class of the LED lamp in the intelligent rearview mirror, so that multi-stage change of the brightness of the LED lamp in the intelligent rearview mirror is achieved.

The invention provides an intelligent piezoelectric single liquid drop generator and a method thereof. The intelligent piezoelectric single liquid drop generator comprises a one-way flow valve, a piezoelectric spray head and a controller; the one-way flow valve comprises a valve body; the valve body is gradually expanded; the piezoelectric spray head comprises a cavity, a nozzle and piezoelectricceramics; one end of the cavity is detachably connected with the wide end of the valve body; the nozzle is formed in the other end of the cavity; N groups of piezoelectric ceramics are arranged on thecavity; each group of piezoelectric ceramics is provided with M pairs of piezoelectric ceramics; M is greater than or equal to 2; the M pairs of piezoelectric ceramics are uniformly distributed alongthe circumference of the cavity; and the controller is connected with drivers of the piezoelectric ceramics correspondingly. By controlling the working frequency of multiple piezoelectric ceramics arranged on the spray head, the amplitude can be controlled and then the vibration amplitude of a housing of the cavity of the spray head is controlled, the vacuum degree caused by piezoelectric vibration at the nozzle is adjusted, the pressure in the cavity of the spray head is changed by multiple times of expansion and contraction so that multi-level control is realized, liquid is subjected to multiple-stage division, the volume of liquid drops is controlled, and the generation speed of the liquid drops is capable of being controlled.

The invention provides a gas stove and a gas stove control method. The gas stove comprises a panel and a bottom shell, wherein the panel is provided with a combustor and a support structure arranged in the circumferential direction of the combustor. The gas stove further comprises an air door adjusting device, a gas detection device and a controller, wherein the air door adjusting device is arranged inside the bottom shell and is suitable for adjusting the ventilation amount of an air door structure connected with the combustor; the gas detection device is arranged on the panel and is suitablefor detecting gas components in smoke emitted by the combustor in a working state; and the controller is arranged inside the bottom shell and is in communication connection with the air door adjusting device and the gas detection device. The gas components in the smoke are detected through the gas detection device, after signals are transmitted to the controller, whether the air supply amount ofthe combustor in the working environment is sufficient or not is judged through comparison and recognition, the ventilation amount of the air door adjusting device is controlled according to the condition, normal work of the combustor is guaranteed, the air door structure can be automatically adjusted, the combustion working condition is more stable and efficient, and a user can use the gas stoveconveniently.

The invention belongs to the field of oil production, and particularly relates to a multistage flow safety valve for oil production. The multistage flow safety valve comprises a valve seat, a valve body, a first valve module, a second valve module, a third valve module and a push module, and the valve seat is provided with a liquid inlet; the valve body and the valve seat are in threaded connection, a threaded hole is formed in the right side of the valve body, and a liquid outlet is formed in the valve body; the first valve module is installed on the valve seat and is used for first-stage flow control, the second valve module is installed on the first valve module and is used for second-stage flow control, and a third valve module is installed on the second valve module and is used for third-stage flow control; and the push module is installed in the threaded hole of the valve body and is used for controlling the first valve module, the second valve module and the third valve module to work. The multistage flow safety valve is mainly used for multistage control over flow, flow control is more accurate, and meanwhile, the control valve has the good buffer performance and the good stability.

The invention provides an SiC high-voltage switch and silicon IGBT mixed type three-phase four-wire high-voltage converter which comprises 2N silicon IGBT low-voltage module units, six SiC high-voltage switches and eight bridge arm inductors. The phase a, the phase b and the phase c of the mixed type three-phase four-wire high-voltage converter are the same in structure, an upper bridge arm is formed by a high-voltage switch and a bridge arm inductor in a series-connecting mode. A lower bridge arm is formed by a bridge arm inductor and a high-voltage switch in a series-connecting mode. Then, the upper bridge arm and the lower bridge arm are connected in series. The connecting point of the upper bridge arm inductor and the lower bridge arm inductor forms an alternating-current output end of a bridge arm with a corresponding phase. An upper bridge arm of a phase o is formed by N low-voltage module units and a bridge arm inductor in a series-connecting mode in sequence, a lower bridge arm is formed by a bridge arm inductor and N low-voltage module units in a series-connecting mode in sequence, then the upper bridge arm and the lower bridge arm are connected in series, and the connecting point of the upper bridge arm inductor and the lower bridge arm inductor forms a middle wire end. The alternating-current output end is connected to load in a three-phase star-shaped connecting mode, the middle wire end is connected to the middle point of the load, by controlling output of the middle wire end, load voltages can generate a sine multi-level phenomenon, and harmonic waves are reduced.

The invention discloses a frequency conversion vacuum environmental protection system for roller machines with low energy consumption and zero discharge. The butterfly valve is divided into two paths, one path is connected to the first-stage Roots pump and the second-stage Roots pump in sequence, and the other path is connected to the second-stage Roots pump through the second pneumatic butterfly valve. Silencer for air noise. The invention can reduce the energy consumption of the original water ring pump by 40%, improve the reliability of the system, and be environmentally friendly with zero discharge; when the air volume of the idler machine increases due to the increase of the ambient temperature, it can automatically reduce the temperature of the air inlet of the pump to ensure a constant The pumping speed and vacuum degree solve the problem of water return and scaling during shutdown, and effectively reduce noise pollution.

The invention relates to a water pump control device, in particular to an automatic control device for mine drainage. The automatic control device comprises a magnetic limiting switch, a limiting cylinder and a control floater, the upper side and the lower side of the limiting cylinder are arranged to be open, the inner wall, close to a shaft, of the limiting cylinder is provided with a limiting sliding groove, a slideway is arranged in the middle of the limiting sliding groove, and block pieces are arrange at the upper end and the lower end of the limiting sliding groove respectively; one side of the control floater is provided with a groove, a sliding rod is installed on the inner side of the groove, a magnetic control piece is installed at the upper end of the sliding rod, the groove cooperates with the limiting sliding groove for use, and the sliding rod cooperates with the slideway for use. The automatic control device for mine drainage is simple in structure, the position of the limiting cylinder can be reasonably arranged according to particular working requirements, great convenience is brought to production, the device can achieve multilevel control, the drainage speed is reasonably controlled according to the water quantity in the shaft, and due to the action of the block pieces, the control floater can achieve the multilevel drainage function in a short stroke.

A small-current far-near light overtaking switch comprises a first base, a second base, a sliding block and a movable contact piece, wherein the first base is provided with a mounting part that is arranged with a static contact piece, and an inserting port; the second base is installed on the first surface of the mounting part and is provided with a conductive sheet that is conducted with the power static contact piece; the conductive sheet is provided with a power inserting pin part for accessing the power; the sliding block is glided back and forth to install on the second surface of the mounting part; the movable contact piece is installed on the sliding block and is cooperated with the static contact piece to control the switch. Compared with the prior art, the invention has the advantages of good integral running reliability and stability, can be multi-gear controlled, and has thin integral structure so as to be installed in a narrow space and also can be rapidly and conveniently installed via an inserting pin and an inserting port.