104 results about "Time switch" patented technology

The invention belongs to the technical field of permanent magnet synchronous motor control, and particularly discloses a permanent magnet synchronous motor finite time switching active-disturbance-rejection rotating speed control method, which comprises the following steps: acquiring a reference rotating speed and an actual rotating speed of a permanent magnet synchronous motor; the absolute value of the error between the reference rotating speed and the actual rotating speed is calculated and compared with a preset first threshold value and a preset second threshold value, and the stage of the permanent magnet synchronous motor is judged; constructing a finite time cascade expansion state observer comprising a first-stage finite time ESO and a second-stage linear ESO to observe the state and lumped disturbance of the permanent magnet synchronous motor; and based on the stage of the permanent magnet synchronous motor, selecting a composite state of the observation value of the first-stage finite time ESO, the observation value of the second-stage linear ESO or the observation value of the first-stage observer and the observation value of the second-stage observer generated based on the Bezier curve to generate the rotating speed loop control law of the permanent magnet synchronous motor. According to the invention, the problems that the transient anti-interference capability is weak and the current performance is reduced due to the fact that transient control and steady-state control are not distinguished in the prior art are solved.

The invention discloses a switching system dynamic quantization control method and device based on event-triggered communication, and the method comprises the steps: building a continuous time switching linear system model for a switching system, and giving a system stability guarantee mechanism; designing a dynamic quantizer for the continuous time switching linear system model, giving a dynamic quantization parameter and a dynamic quantization updating strategy, and cooperatively designing an event triggering mechanism according to a state variable of the system and the dynamic quantization parameter; and designing a switching law according to an event triggering mechanism, and adjusting dynamic quantization parameters of the system to realize stable control of the system. On the premise of ensuring the system performance, the communication frequency and calculation burden of the system can be reduced, the resource utilization efficiency of the system can be improved, the method can be widely applied to the fields of network control systems, industrial automation systems and the like, and an effective solution is provided for solving the control problem of a complex system.

In accordance with an embodiment, a method for controlling a constant on-time switched mode power converter includes: generating a pulse signal having an on-time; during a soft-start phase of the power converter, successively increasing the on-time from an initial duration to a final duration, wherein the final duration is larger than the initial duration; sensing an output voltage of the power converter and generating a feedback signal proportional to the output voltage; adjusting a frequency of the pulse signal based on the feedback signal and a reference signal; and driving a power switch with the pulse signal to control the power switch and regulate the output voltage.

The invention discloses an enhanced transient stability improvement strategy and system for a grid-forming converter based on current amplitude limiting, and aims to effectively suppress a power angle instability phenomenon in a power grid fault or transient period and ensure that the converter has higher stability in a grid-connected process. The specific implementation comprises a dynamic dq-axis current amplitude limiting control strategy and a reference power control structure. Three-phase voltage and current of a grid-connected point of the converter are measured in real time, and a dq-axis current reference value and a power ring reference value are dynamically adjusted by combining a power angle and angular velocity deviation in an active power link, so that power angle instability during a transient period is accurately inhibited. According to the control strategy, the risks of overcurrent and system instability are effectively reduced, and particularly when a power grid breaks down or is in a normal condition, quick response and stable output of the system are ensured by switching the control modes in real time.

1. The name of the design product: thermostat timer switch. 2. The use of the design product: switch for controlling the working time, temperature and gear of electric heater. 3. The design points of the design product: in shape. 4. The picture or photo best indicating the design points: perspective view 1.

The utility model provides a multi-channel video signal source real-time switching management circuit which is characterized in that the output end of a power supply is in power supply connection with a power supply voltage adjusting circuit and a video signal display device, and the output end of the power supply voltage adjusting circuit is in power supply connection with a video signal processing main control circuit; the input end of the video signal processing main control circuit is connected with the output end of the video signal input interface 1, the output end of the video signal input interface 2, the output end of the video signal input interface 3 and the output end of the control key, and the output end of the video signal processing main control circuit is connected with the input end of the video signal display device. A main control chip U18 is arranged in the video signal processing main control circuit, and the model of the main control chip U18 is LQFP64. The beneficial effects of the utility model are that the system can achieve the automatic screening of an optimal video signal source from multiple paths of video signal sources, and the switching display of the optimal video signal source.

The utility model relates to the technical field of silicon controlled rectifier dimming, in particular to a multi-color-temperature multi-power switching circuit compatible with silicon controlled rectifier dimming, which comprises a rectifying and filtering module, a silicon controlled rectifier dimming constant-current module, an MCU (Microprogrammed Control Unit) linear power supply module, a power failure detection module, a color temperature control module, a double-path PWM (Pulse-Width Modulation) dimming constant-current module and a load module, the input end of the power failure detection module is electrically connected with the rectification filtering module and used for detecting the power failure condition of the rectification filtering module, and the output end of the power failure detection module is electrically connected with the analog input end of the color temperature control module. The two pulse width modulation ends of the color temperature control module are electrically connected with the two pulse width modulation ends of the double-path PWM dimming constant-current module in a one-to-one correspondence manner, so that not only can a silicon controlled rectifier dimmer be compatible for brightness adjustment, but also the color temperature and the power can be flexibly and conveniently switched at any time; and meanwhile, the problem that the color temperature and the power are switched mistakenly due to the fact that a switch is turned on for several times due to mistakes in the actual use process is solved, and then the use experience of customers is improved.

This utility model relates to a timer switch with categorized timing functionality, aiming to solve the technical shortcomings of existing single timer switches, which suffer from cumbersome user operations and inability to quickly switch between different timing schemes due to rigid timing configuration management when adapting to different loads or application scenarios. This utility model's timer switch features innovative improvements in hardware structure. Through the coordinated operation of its internal data management mechanism and user command response mechanism, it achieves categorized storage and one-click overall switching of multiple independent timing schemes. Users only need a simple selection operation to quickly switch the timer switch between different preset working modes, greatly improving its adaptability to multiple loads and application scenarios, enhancing user experience, and avoiding the hassle of repeatedly modifying specific timing parameters.

The utility model discloses a blowing cooling device for an electrolytic bath. The blowing cooling device comprises a compressed air pipe; the air guide pipe is provided with a first end and a second end which are oppositely arranged, and the first end is connected with the compressed air pipe; the air outlet pipe is connected with the second end, the air outlet pipe is provided with a plurality of air outlets, the multiple air outlets are arranged at intervals in the length direction of the electrolytic cell, and the air outlets spray air to a cell shell of the electrolytic cell; the electromagnetic valve is arranged on the compressed air pipe and / or the air guide pipe and used for controlling the air flow between the compressed air pipe and the air outlet pipe; and the time type switching device is connected with the electromagnetic valve and is used for controlling the electromagnetic valve to start and stop. According to the blowing cooling device for the electrolytic bath, air can be intermittently supplied to cool the electrolytic bath, it can be guaranteed that the temperature of the electrolytic bath is low, energy waste can be avoided, and the damage rate of the pipeline and the valve body is reduced.

The utility model discloses a timed disinfection system for laboratory disinfection, which comprises a door lock module arranged at an entrance of a laboratory, an indicating lamp arranged at the top of the door lock module positioned on the outer side of the laboratory, and a control module, a time switch and an identification module which are respectively arranged in the laboratory, the recognition module is electrically connected with the time control switch through the control module to form linkage fit, the time control switch is electrically connected with the door lock module, the disinfection module and the indicator light through the control module to form linkage fit, and the door can be closed after setting through the time control switch. When the recognition module recognizes that no person is in the room and the door lock module is closed, the time control switch is started, the time control switch locks the door lock module and starts the disinfection module and the indicator lamp for ultraviolet disinfection, the self-control performance is good, and the safety is high.

The utility model relates to water treatment technical field, specifically is a kind of PH timing detection device for water treatment, including main structure board, the timing switch is installed in the one side of main structure board by mounting seat, the PH monitor is installed in the one side of the bottom of timing switch in main structure board by mounting bracket, sleeve is installed in the one side of the bottom of PH monitor in main structure board by mounting bracket;The sleeve bottom end is sleeved with telescopic rod, the detection probe is installed in the bottom of telescopic rod by mounting bracket, the top of telescopic rod inside sleeve is connected with piston block by thread groove, the top of piston block is fixed with tension spring by bolt;When working, air intake component is extracted to sleeve inside gas, makes telescopic rod and its bottom detection probe descend, insert into sewage, detect sewage acidity and alkalinity, after detection, gas is discharged by air outlet component, makes detection probe ascend, avoid its long-time soaking in sewage.

A hands-free, Red-Light Therapy device comprising a first base that stays outside the mouth and a semicircular or U-shaped lip spacer inserted into the mouth, with extended arms featuring inner tooth spacers. It has three sets of LEDs: a node on an adjustable, flexible, and detachable arm attached to the lip spacer, LEDs around the outer surface of the lip spacer, and LEDs on the side wall of the first base. Powered by a rechargeable battery with a timer switch, the device delivers red light (633-850 nm) to the inner mouth, lips, gums, and teeth, facilitating the treatment of mouth sores and injuries. The lip spacer is designed to open and hold the mouth securely using tooth spacers sized to fit 2-3 molars. This invention addresses the need for a convenient and effective at-home treatment for oral pain and sores, combining the benefits of red-light therapy with hands-free operation.

The utility model relates to an independent long-time simulation timing switch control circuit, which comprises an isolation power supply module, an integrator module, a charging capacitor adjusting module and a relay control module. A pin 3 of the isolation power supply module outputs VEE and is connected to the integrator module. In the integrator module, the anti-phase end of an operational amplifier is connected with the VEE through a sixth resistor, the non-inverting end of the operational amplifier is connected with the VEE through a third resistor and is grounded through a fourth resistor, and the output end and the anti-phase end of the operational amplifier are directly connected with an integrating capacitance adjusting module. The charging capacitance adjusting module is formed by connecting a first capacitance branch, a second capacitance branch, a third capacitance branch, a fourth capacitance branch and a reset switch in parallel. The relay control module comprises a first triode, a relay physical switch, a charging loop switch and a relay. Compared with the prior art, the system has the advantages of wide timing range, high stability, interference resistance and the like.

The utility model discloses a support protector for preventing foot drop of a critical patient, which comprises a lower limb protector and a foot binding structure, and the lower limb protector comprises a leg support pad and a sole support pad fixedly mounted at the left end of the leg support pad. According to the supporting protector for preventing foot drop of the critical patient, by arranging a lower limb protector and a foot binding structure, a leg supporting pad is worn on the shank of the patient, a sole supporting pad is worn on the sole of the foot, and then an electric telescopic rod is driven to contract to drive a traction rope to pull the sole supporting pad, so that the ankle joint of the patient can be fixed; then the opening and closing duration of the electric telescopic rod can be set through a timing switch, the electric telescopic rod can be driven to reset after traction reaches the set duration, and therefore the traction rope can be loosened to relax the ankle joint and muscles, the timing switch is used for circulating the interval switch, and therefore circulating interval traction can be conducted on the ankle joint of a patient; frequent manual adjustment by medical staff is not needed, and use by the medical staff is facilitated.

A self-contained hardware apparatus and method that enables proprietors to efficiently manage and allocate electric power from a designated source using timer-driven switches and electric breakers, to distribute power to charge multiple electric vehicles of all types and sizes, including land, water, or aerial vehicles, across diverse locations, without relying on software-driven communication or wireless connectivity, thereby eliminating the need for third-party equipment or subscriptions. It optimizes surplus power from the source, utilizing timers and switches to divide it into multiple transmission cables. Each cable delivers power at specified voltage and amperage levels to individual charging units, ensuring efficient and tailored charging without the need to share physical charging spaces.

The utility model relates to the technical field of carbon production, and discloses a carbon production powder recycling system, which comprises a screw conveyer, a pneumatic bin and a coke powder bin, the screw conveyer is arranged at the input end of the pneumatic bin, a splicing piece is fixed outside a connecting pipeline, and a striking piece is arranged on the side wall of the splicing piece, so that the connecting pipeline is connected with the pneumatic bin. When the time set by a timing switch is up, a driving motor operates to enable a rotating column to drive a rotating plate to rotate, so that a sliding block is subjected to downward stirring acting force, then the sliding block impacts the bottom of a striking piece, and then the striking piece transmits vibration acting force to a connecting pipeline through a splicing piece after vibration; when the connecting pipeline vibrates, powder attached to the inner wall of the connecting pipeline can be vibrated down, so that the connecting pipeline can be vibrated to solve the problem of blockage when more powder adheres to the wall of the connecting pipeline to cause blockage, and long-term stable operation of the carbon production powder recycling system is facilitated.

A battery health and depassivation testing apparatus includes a timed switch electrically connected to the positive terminal of the battery and a timer circuit to control the timed switch while conducting the battery test, a test initiation switch and a test-in-progress indicator. During the test the battery is connected to a current sink circuit to establish a load condition for a predefined period of time. A comparator is used to test the battery's voltage to a known DC voltage following the load condition. Pass / fail indicator LEDs are provided to display the results of the test. The battery health and depassivation testing apparatus also includes a polarity protection circuit connected to a polarity error indicator to prevent damage to the circuitry due to the battery being installed backwards.

The invention relates to the technical field of window openers, and discloses a window opener control system and method based on electronic equipment operation software, the system comprises a window opener, a controller, electronic equipment and the electronic equipment operation software, the controller is arranged on the window opener, and the electronic equipment operation software is installed on the electronic equipment. The electronic equipment operation software interface comprises an application main interface and a setting interface, the application main interface comprises four window sash fixed path motion mode control areas, a position control area for controlling the opening and closing positions of window sashes, a timing switch control area, a countdown switch control area and an intelligent scene control area, and the setting interface comprises a delay setting control area. The controller comprises a communication module, a motor driving module and a power interface module, and the controller is in communication connection with the electronic equipment through the communication module. According to the system, the Internet of Things technology is utilized, electronic equipment operation software serves as a control center, and accurate, intelligent and remote control over the window opener can be achieved through configurable delay parameters and rich control modes.

Disclosed in the present invention are a feeder fault self-healing method and apparatus, a terminal device, and a storage medium. On the basis of opening / closing signals, blocking signals and position information of several switches mounted on a faulty feeder, a faulty feeder model is constructed; then, on the basis of the faulty feeder model, a terminal overcurrent switch that has tripped and is located at the farthest end of the faulty feeder is determined; and then, on the basis of the open / closed state of the terminal overcurrent switch, a fault upstream boundary switch and a fault downstream boundary switch are determined, such that a fault region is accurately positioned on the basis of the fault upstream boundary switch and the fault downstream boundary switch. Therefore, in the present invention, fault positioning is no longer based solely on the open / closed states and blocking states of voltage-time switches; instead, in view of the topological relationships, open / closed states and blocking states of the switches on the faulty feeder, the fault region is accurately positioned, and feeder self-healing is completed, thereby effectively improving power supply reliability.

The utility model relates to the technical field of light supplementing devices, in particular to a multi-layer light supplementing device for crop planting, which comprises a fixing column and a supporting plate. Supporting plates used for assisting in bearing crops are installed at the lower ends of the inner walls of the multiple sets of fixing columns. According to the utility model, the timing switch socket is adopted to control the lamp tube to set the multi-period automatic switch lamp tube for light supplement work according to the crop planting requirements, so that the light supplement time and intensity can be conveniently adjusted according to the height and position of plants, crops on each layer can obtain uniform illumination, the illumination effect is accurately provided, and the crop planting quality is improved. The timing switch socket can accurately control the light supplementing time according to actual requirements, unnecessary energy waste is avoided, automatic light supplementing management is achieved, frequent manual operation of turning on and turning off a lamp is not needed, the system adapts to different seasons and environment changes, it is ensured that crops can obtain stable illumination conditions all the year round, and the system is suitable for popularization and application. And stable growth of crops is ensured.

The utility model relates to timing switch device field especially, relate to a kind of embroidery lace fabric setting device timing starting device, including wheel frame;It further includes high resistance block, the inside of wheel frame is fixedly connected with two spacers, two spacers are fixedly connected with high resistance block, the outside of two spacers is fixedly connected with low resistance block;The utility model lets two conductive discs normal time contact with high resistance block, to reduce the voltage when current enters fabric setting equipment after passing through high resistance block, to reduce the operating power of fabric setting equipment, when user needs to use fabric setting equipment, through servo motor makes compound gear forward rotation, until active block bump built-in motor switch, to make servo motor stop and stop power, subsequently clockwork timer makes compound gear slow uniform speed reverse again through upper gear, before active block recontact passive block, all contact with conductive disc will change from high resistance block to low resistance block, let fabric setting equipment operate with higher high power.

According to the novel timing socket circuit, the timing unit can be switched to hour or minute through one key, and timing and thorough outage can be achieved in a reservation mode. A circuit is composed of a protective tube, a duplex linkage start-stop and timing power supply button, a duplex linkage reservation mode start and reservation timing switch, an hour / minute switching button, a logic mainboard, more than one relay, a working power supply system, a single chip microcomputer, a time display system and the like. The timing unit can be randomly switched to hour or minute, the setting of any shutdown time requirement is facilitated, the power supply of the whole machine can be thoroughly turned off in a timing manner in a reservation mode, and the operation is simple and easy to understand. And a one-key start-stop circuit is arranged, so that the standby problem of no residual electricity of a timing automatic shutdown whole machine of instant power supply or reserved power supply is conveniently and thoroughly solved, the potential fire hazard safety hazard in a standby mode is eliminated, and the electricity utilization safety is thoroughly guaranteed.

The utility model provides an intelligent sofa, which belongs to the technical field of furniture and comprises a sofa frame, a cushion, armrests, a backrest cushion, an infrared sensor, a temperature sensor, a maintenance window, a voice player, an air feeder, a hot air box, an electric heating pipe, an isolation bag and a pressure sensor. By arranging the multi-mode sensor, the rest time of a user on the sofa can be monitored through the infrared sensors on the inner sides of the armrests, and the pressure distribution condition of the backrest cushion can be sensed through the pressure sensors which are distributed on the surface layer in the backrest cushion in an array manner, so that the sitting posture of the user is judged; if the time reaches a set limit value for a long time, a signal is sent to the timing switch to start the voice player, and the voice player sends out voice to prompt the user to pay attention to proper activities, so that the user is prevented from sitting for a long time, the problem of frontal and lumbar vertebra injury caused by keeping the sitting posture for a long time can be avoided, and the use is healthier and more intelligent.

This utility model discloses a mechanical 24-hour timer switch, including a base shell, a dial, and a quartz motor. The base shell contains multiple sets of gears connected to the quartz motor. The quartz motor includes a lower motor cover, an upper motor cover, a left iron core, a right iron core, and a coil. The key feature is that the upper end of the lower motor cover has an integrally formed positioning block with a first toothed groove, and the connecting arm extending from the lower side of the upper and lower motor covers has a second toothed groove. The upper and lower positioning plates on the base shell are respectively engaged with the first and second toothed grooves via protrusions. This timer, through the engagement of the toothed grooves and protrusions, accurately positions and securely fixes the quartz motor, effectively limiting motor vibration, ensuring stable gear transmission, improving timing accuracy, reducing component wear, and extending service life.

The utility model provides a pharmaceutical medicine drying and storing device. The pharmaceutical medicine drying and storing device comprises a main body mechanism and a medication prompting mechanism, the main body mechanism comprises a storage cabinet and storage boxes, and the storage boxes are distributed on one side of the interior of the storage cabinet at equal intervals; the medicine taking prompting mechanism comprises a prompting lamp and a timing switch, cover plates are rotatably installed on one side of the storage cabinet at equal intervals, one side of each cover plate is fixedly connected with the corresponding storage box, the prompting lamp and the timing switch are installed on one side of each cover plate, and the timing switch is electrically connected with the electric control end of the prompting lamp. One side of the cover plate is fixedly connected with a second magnetic block; the storage boxes are arranged to be matched with the partition plates to separate and store different medicines, the storage boxes are fixed to one sides of the cover plates, the medicines are contained in the storage cabinet to be dried and stored, each cover plate is provided with the timing switch and the prompting lamp, and when the medicine taking time of the medicines is up, a patient is prompted to take the medicines through the prompting lamps, so that the medicine taking efficiency is improved. And clinical patients can be conveniently assisted to take medicine regularly.

The invention discloses a wireless energy supply OAM communication system design and optimization method based on a time switching protocol, and relates to the technical field of communication, and the method comprises the steps: obtaining array configuration data of a base station and energy limited equipment, calculating channel parameters, and determining power distribution; generating a modulation matrix according to the OAM mode order, and dividing a time period into an energy transmission time period and an information transmission time period; energy acquisition data and link capacity are calculated, an optimal time switching factor is determined by adopting a convex optimization method by taking maximization of uplink total capacity as a target under the condition that the constraint of a service quality threshold value is met, and finally, a base station is controlled to complete cooperative transmission of energy and information; the method has the advantages that through deep fusion of OAM mode multiplexing and TS protocols, dynamic optimal balance of energy transmission and information transmission is achieved on the premise that the service quality is guaranteed, and the spectrum efficiency and the energy efficiency of a communication system are improved.

The application relates to the technical field of power system automation, and discloses a power communication data distributed processing system based on edge calculation, which comprises an edge calculation gateway arranged at each node of a power distribution network. A topology mapping module analyzes real-time switch states, constructs a weighted adjacent matrix, and dynamically generates a logical communication routing table consistent with the physical connection of the power grid; a feature extraction module extracts a transient feature vector during a fault and interacts between neighbor nodes; an anchor point election module compares electrical impedance distances, and determines a computing power anchor point that undertakes a computing task according to the minimum impedance rule; a time delay compensation module uses a power frequency voltage phase as a whole-network public reference, and realizes time sequence alignment of multi-source data in combination with a time stamp; and a fault positioning module performs differential calculation based on the aligned data. The application realizes adaptive following of the communication routing to the change of the power grid topology, and significantly improves the real-time performance and accuracy of the distributed fault positioning without relying on external high-precision satellite timing.

The application provides a power distribution network fault real-time sensing and positioning system based on Internet of Things edge computing, and relates to the technical field of power system automation and industrial Internet of Things. The system extracts wavelet transient energy features from collected voltage and current data through an Internet of Things edge unit, generates a light frequency band energy entropy vector, thereby overcoming the time delay bottleneck of massive data transmission, and uses real-time switch state updates to drive a dynamic adjacency matrix, which drives a graph convolutional neural network to perform spatio-temporal aggregation calculation on the features of multiple nodes, thereby realizing the collaborative enhancement of weak fault signals in a variable topology environment. Finally, by introducing an entropy weight penalty of prediction uncertainty and a time domain integral mechanism of nonlinear belief state, the fault probability output by the model is continuously checked and confidence is accumulated, effectively suppressing the discrimination jitter caused by intermittent arc noise, and finally generating accurate isolation control instructions based on local protection logic, realizing the rapid locking and removal of faults under complex conditions.

The present application relates to the technical field of intelligent faucet, and proposes a forget-proof intelligent faucet system and a control method thereof, the system comprising a main control circuit board, an electromagnetic switch valve, a forget-proof intelligent faucet, a cloud service platform, a mobile control terminal, a 433 wireless communication module and a plurality of wireless buttons; the main control circuit board comprises an MCU module, a power module, an output module and a plurality of timing switch modules; the MCU module is communicatively connected with the mobile control terminal through the cloud service platform; the wireless buttons are communicatively connected with the MCU module through the 433 wireless communication module; the plurality of timing switch modules are respectively communicatively connected with the plurality of wireless buttons through the MCU module, and the plurality of timing switch modules are respectively preset with different timing times through the mobile control terminal; the water outlet time and the water outlet amount of the forget-proof intelligent faucet are controlled through the wireless buttons with different preset times, so as to avoid the problem of water resource waste caused by forgetting to close the faucet.