42results about How to "With anti-jamming function" patented technology

The invention relates to a motor stator flux linkage estimating method comprising the operation steps of: compensating phase and amplitude of stator negative electro-dynamic potential obtained through calculation; and converting the compensated stator negative electro-dynamic potential into a stator flux linkage through a low-pass filter. Furthermore, the motor stator flux linkage estimating method comprises a step of determining the cut-off frequency of the low-pass filter. The step of determining the cut-off frequency of the low-pass filter comprises the following specific steps of: obtaining a stator flux linkage angular velocity obtained through stator flux linkage, and then determining the cut-off frequency of the low-pass filter according to the size of a stator flux linkage angular frequency. By utilizing the motor stator flux linkage estimating method provided by the invention, not only can the switch-on low-speed dynamic property of a motor be ensured, but also the direct-current drifting inhibiting capability is realized, so that the good balance between the switch-on low-speed dynamic property and direct-current drifting inhibiting of the motor is achieved.

The invention discloses a pressure control device and method for a double-level respirator. The pressure control device is characterized by comprising a turbofan, a turbofan driving controller, a sensor and an air path, wherein the turbofan is used for generating compressed air; the turbofan driving controller is used for driving the turbofan and comprises a servo controller, and the servo controller is a closed loop system under the compound control of a feedforward controller and a feedback controller; the sensor is used for real-time detection of the actual pressure of the airway of a patient; the air path is formed by connecting hoses. According to the pressure control device and method for the double-level respirator, the design is reasonable, the functions of real-time detection and real-time adjustment of first output pressure and final output pressure are achieved, the anti-interference function is also achieved, and the pressure control device is more intelligent, safe and reliable.

The invention discloses a power distribution cabinet with an anti-interference function. The power distribution cabinet comprises a moisture-proof pedestal, a cabinet body and a control cabinet. The cabinet body is installed on the top of the moisture-proof pedestal. A rain shield is installed above the cabinet body through a support rod. A solar cell panel is installed on the upper surface of the rain shield. The control cabinet is fixed on the cabinet body under the rain shield through a bolt. A single chip microcomputer is electrically connected with a power distribution cabinet air conditioner installed on the back face of the cabinet body through a bolt. The output end of the power distribution cabinet air conditioner communicates with an air inlet arranged in a power distribution bin. Heat dissipating fins are uniformly arranged on the cabinet body under the power distribution cabinet air conditioner. The cabinet door is movably installed on one side of the front face of the cabinet body through a hinge. A sealing bin is fixed on the inner side of the cabinet door. A power distribution cabinet layout drawing is arranged in the sealing bin. According to the invention, the sealing bin is fixed on the inner side of the cabinet door, and the power distribution cabinet layout drawing is arranged in the sealing bin, so it is convenient for a worker to maintain the power distribution cabinet every day; and the power distribution cabinet is convenient to use.

The invention discloses an air valve. The air valve comprises a valve body, wherein a valve cavity with a bottom opening is formed in the valve body, a rapid exhaust passage communicating with the valve cavity is arranged at the upper end of the valve body, a valve element mechanism capable of moving up and down is arranged in the valve cavity, the rapid exhaust passage can be closed or opened inthe process of moving up or down of the valve element mechanism, and a signal feedback device used for detecting a signal of the movement position of the valve element mechanism is arranged in the rapid exhaust passage. According to the air valve, through the signal feedback device arranged in the rapid exhaust passage and used for detecting the signal of the movement position of the valve elementmechanism, real-time monitoring of the movement position of the valve element mechanism is achieved, and timely feedback is sent to a technician when a problem occurs, so that the condition that timely processing cannot be achieved after the valve element mechanism is stuck is avoided.

The invention provides a tamper circuit based on an STM32 chip. The tamper circuit comprises a battery, a switch and a resistor-capacitor (RC) charge-discharge circuit, wherein the battery is respectively connected with one end of the switch and a real time clock (RTC) register in the STM32 chip and supplies power for the RTC register, the other end of the switch is connected with one end of the RC charge-discharge circuit, and the other end of the RC charge-discharge circuit is connected with a TAMPER pin of the STM32 chip. According to the tamper circuit, additional chips (ICs) are not required to be added to achieve tamper functions, the tamper time is easy to control, and the tamper circuit is high in tamper sensitivity, low in cost, good in performance and interference resistance characteristics and long in service life of the battery.

The invention discloses an intelligent classification treatment equipment for sewage, which comprises a stirring motor, a stirring motor controller, a reaction pool and a water inlet tank. Two support seats are arranged on the top of the reaction pool, and the water inlet tank is set between the two support seats. During this period, the device crushes the bulky waste existing in domestic sewage through the setting of crushing rollers and squeezing rollers, and a metal screen is set in the connecting pipe to collect the crushed waste in a centralized manner, avoiding the occurrence of clogging , and through the treatment filter and the secondary filter, the mixed small particles of waste in the sewage are blocked in the debris partition box to realize the separation of dry and wet sewage, which is convenient for subsequent treatment. The single treatment volume can be controlled through the water level sensor. In order to realize the quantitative feeding of activated carbon particles and avoid waste, the agitator used in this design is a two-way agitator, which is more efficient and more fully agitated than the one-way agitator, and the power supply of the agitating motor has an anti-interference function. Stability control is achieved.

The invention discloses an anti-interference cable junction box with a slippage prevention function, and the junction box comprises an upper housing and a lower housing, which are connected through aconnecting part. The longitudinal side walls of the upper and lower housings are respectively provided with at least one upper half-circular hole and at least one lower half-circular hole, which are opposite to each other, and form a circular wiring hole. The interior of a cable junction box is provided with at least one central connector, and two ends of the central connector are respectively clamped in the wiring hole. The central connector comprises a hollow insulating clamping sleeve, and the interior of the insulating clamping sleeve is in cup joint with a metal mesh sleeve. The interiorof the metal mesh sleeve is in cup joint with an insulating line sleeve. The insulating line sleeve employs a sleeve. The interior of the insulating line sleeve is at least partly provided with roughprojected insulating particles. The novel junction box provided by the invention is made of an insulating material and the metal mesh sleeve, is strong in anti-interference capability, and is good inwaterproof performances.

The invention discloses a waveform synthesis method for a directional diagram provided with a notch and solves the problem that a directional diagram of an existing transmitting signal can not form anotch in an interference direction. According to an implementation scheme, the method comprises the following steps: firstly, finding an optimal covariance matrix and an interference subspace of a transmitting signal, and constructing a cost function of the directional diagram provided with the notch; secondly, converting the cost function into an unconstrained function by adopting a sequential unconstrained minimization method; thirdly, optimizing an unconstrained function by adopting a block gradient descent method, thus a final cost function is obtained; fourthly, solving the final cost function, thus a closed-form solution is obtained; fifthly, correcting an initial transmitting signal by using the closed-form solution, thus a corrected transmitting signal matrix is obtained; and sixthly, judging whether a corrected transmitted waveform meets anti-interference conditions, if the corrected transmitted waveform meets the anti-interference conditions, taking the corrected transmittedwaveform as a transmitted waveform of a radar, and if the corrected transmitted waveform does not meet the anti-interference conditions, taking an optimized transmitting signal as the initial transmitting signal, and returning to the step 5 and continuously iterating. The method disclosed by the invention can synthesize a constant modulus transmitted waveform of the directional diagram provided with the notch and can be used for design of the transmitted waveform.

The invention discloses a network-based soil detection system, which comprises a soil detector. The soil detector is provided with a wireless network transceiver module, an information processing center module, an information collection module and a soil detection module from top to bottom. A wireless networking module is arranged inside the wireless network transceiver module. One side of the wireless networking module is equipped with central monitoring equipment which is used for monitoring network transmission to raise safety and accuracy of data information. An information two-way transmission line is arranged inside the information processing center module and is used for receiving and transmitting acquired information data. An information memory is disposed inside the information collection module, and an encryption unit is arranged inside the information memory. A soil metal content detector is arranged inside the soil detection module. The system of the invention has a simple structure, is convenient and fast, has advantages of fast information data transmission, high safety performance, accurate detection data and network transmission, and can get rid of geographical limitations.

The invention discloses a motor power supply capable of preventing overheating and burning. The motor power supply comprises a voltage conversion circuit, a soft starting control circuit and a currentdetection control circuit and is characterized in that the voltage conversion circuit is connected with the soft starting control circuit and the current detection control circuit, the soft startingcontrol circuit is further connected with the current detection control circuit, and the current detection control circuit is further connected with a DC motor M. In the motor power supply capable ofpreventing overheating and burning, the overcurrent protection function of the DC motor is achieved by a logic gate controller combined with a relay, the overcurrent influence caused by starting largecurrent on the DC motor can be effectively prevented, so that the risk that a coil in the motor is over-heated is reduced, meanwhile, the function of interference resistance is also achieved, and themotor power supply has the advantages of stable performance and good application effect and is convenient to use.

The invention discloses an electronic ballast and an energy saving lamp adopting the same and belongs to a lighting startup device. The ballast is provided with an active filter circuit, a rectification filter circuit connected with the active filter circuit, a high-frequency resonance circuit connected with the rectification filter circuit, and a load circuit connected with the high-frequency resonance circuit; a power factor correction circuit is connected between the rectification filter circuit and the high-frequency resonance circuit; and a negative feedback circuit is connected between the high-frequency resonance circuit and the load circuit. The electronic ballast is adopted by an illuminating lamp. The electronic ballast has the advantages of interference resistance, high power factor, high safety and reliability and long service life.

The invention discloses a cable terminal box with an anti-jamming function. The cable terminal box comprises an upper shell and a lower shell which are connected through a connector, wherein at leastone upper semicircular hole and at least one lower semicircular hole which are opposite are formed in longitudinal side walls of the upper shell and the lower shell separately; a circular cable connection hole is formed by each upper semicircular hole and the corresponding lower semicircular hole; holes which are sequentially arranged are formed in transverse side walls of the upper shell and thelower shell separately; shading breathable pad layers are fixedly arranged in the corresponding holes in inner side walls of the upper shell and the lower shell; at least one intermediate cable jointis arranged in the cable terminal box; two ends of each intermediate joint are clamped into the corresponding cable connection holes separately; each intermediate joint comprises a hollow insulating cutting sleeve; each insulating cutting sleeve sleeves a metal mesh cover; and each metal mesh cover sleeves an insulating wire sleeve. The cable terminal box has the advantages that the joints are fastened and are not easy to loosen, and the cable terminal box has environmental temperature change resistance and high anti-jamming capability.

The invention discloses an anti-water-spraying cup for children. The cup comprises a cup body, a cup cover is rotatably connected to the cup body, a first magnet is arranged on the cup cover, a firstconnecting piece and a second connecting piece are arranged on the cup body, a first through hole is formed in the first connecting piece in an up-down penetrating mode, a second magnet repellent to the first magnet in magnetism is slidably arranged in the first through hole, a second through hole is formed in the second connecting piece in an up-down penetrating mode, a push rod is movably arranged at the second through hole and located under the second magnet, a connecting ring is movably arranged on the cup wall of the cup body, at least part of the connecting ring is located under the pushrod, and the connecting ring is connected with a hanging rope. The cup can be hung on the neck of a user through the hanging rope, and the water cup is convenient to carry; after water is drunk up and the cup body is loosened, the cup cover can be automatically covered through a related triggering structure along with falling of the cup body, dust and bacteria entering the cup body can be reduced, and the health during use is improved; a trigger structure is stable and reliable, has an anti-locking function, and is simple in structure and convenient to use.

The invention provides a high-accuracy temperature control valve. The high-accuracy temperature control valve comprises a valve body, an electric actuator and a temperature sensing probe, wherein the electric actuator is arranged on the valve body; a drive motor is arranged in the electric actuator; a connection rod is arranged between the electric actuator and the valve body. The high-accuracy temperature control valve is characterized in that a temperature processor is arranged on one side of the drive motor, a data processor is arranged at the top of the temperature sensing probe and connected with the temperature processor though a wire, and the connection rod is a bidirectional rotary connection rod. The temperature processor receives the temperature detection signal transmitted by the temperature sensing probe in real time and processes the signal, then the purpose of controlling the valve to be switched on or off is achieved through the drive motor, control is easy, reaction is sensitive, and the problem that equipment cannot be used due to failure of temperature sensing materials is avoided. The bidirectional rotary connection rod can drive a valve element to rotate in dual directions, the valve element is prevented from being jammed by foreign matter, and the anti-jamming function is achieved. The high-accuracy temperature control valve is novel in design, simple in structure and suitable for being applied and popularized in industrial production.

The invention discloses a construction garbage disposal device with a material blocking prevention function for construction engineering. The construction garbage disposal device comprises a screeningdevice and a rolling device, wherein the screening device comprises a bottom plate and vertical plates; the bottom parts of the two groups of vertical plates are fixed to the bottom plate while the top parts of the two groups of vertical plates are movably connected with a tipping plate; four groups of air cylinders are movably connected between the bottom plate and the tipping plate; a box bodyon which a screen mesh is mounted is arranged on the top of the tipping plate; a vibration exciter is mounted at the bottom of the box body; a material passing hole is formed in the tipping plate; a hopper is mounted on the bottom plate; a first discharging nozzle is formed in the bottom of the hopper in a penetrating manner; the rolling device comprises a box body and a rolling roller; the rolling roller is mounted in the box body; a motor is mounted on one side of the box body; the bottom part of the box body is fixedly connected with a material collecting box; and the bottom part of the material collecting box is connected with a second discharging nozzle. The construction garbage disposal device disclosed by the invention has the advantages that garbage can be classified according to the sizes of the garbage, and larger construction garbage meets a recycling requirement through primary processing.

The invention relates to the technical field of cable preparation and particularly relates to a bending-resistant cable with an anti-interference function. The cable comprises an outer protective shell and an inner protective shell, wherein the inner protective shell is located on an inner side of the outer protective shell, a plurality of groups of inner cores are arranged on an inner side of theinner protective shell, a filling layer is arranged between the inner cores and the inner side of the inner protective shell, the filling layer is specifically an insulating rubber particle layer, anextension layer is compounded and bonded on an inner surface of the outer protective shell and an outer surface of the inner protective shell, the extension layer comprises a natural fiber layer compositely bonded to the outer surface of the inner protective shell and a TPE layer compositely bonded to the inner surface of the outer protective shell, and the space between the TPE layer and the natural fiber layer is filled with a glass fiber layer. The cable has anti-interference and bending-resistant performance, so damage to the cable due to bending in the using process of the cable is avoided, and using safety of the cable is effectively achieved.

The invention relates to a default-phase-preventing, overvoltage-preventing and interference-preventing automatic protector of a motor and a protection method thereof and belongs to the technical field of protection devices of three phase alternating current motors. The automatic protector comprises a power circuit, a PLC control circuit and a default-phase detection control circuit, wherein the power circuit is used for providing +15V voltage, -15V voltage and +5V voltage for the default-phase detection control circuit. The PLC control circuit is used for enabling the motor to stop rotating when the motor rotates normally and the voltage is overlarge. The default-phase detection control circuit is connected with the PLC control circuit and used for detecting whether frequent default phase is caused by motor circuit 'visual connection' or other reasons or not and then performing an action instantly. The protector is a time-delay protector. When the default phase time is smaller than the delay time due to occasional default phase caused by a power supply department, a default phase protection action is not performed. When the default phase time is larger than the delay time due to the frequent default phase caused by the motor circuit 'visual connection' or other reasons, the default phase protection action is performed.

The invention discloses a reinforced data unit shielding type high-voltage composite cable comprising a cable core. A cable core support body is arranged in a gap of the cable core; a shielding layer coats the outside of the cable core; and an outer sheath layer extrudes the outermost layer. The cable core is formed by twisting of a plurality of electric units and a data unit. According to the invention, Because of the special structural design and the metal-wire braiding shielding layer having an excellent electromagnetic shielding effect, the data unit of the cable has an anti-interference function, thereby effectively reducing the electromagnetic interferences on the data unit by the electric units and guaranteeing the stable work of the data unit. Therefore, a problem that electromagnetic compatibility of the data unit and the electric units is not realized can be solved.

The invention discloses a pasting type magnetic field energy taking module, belongs to the technical field of electric power, and aims to overcome the defect that an existing energy taking wire is invariable in installation. The pasting type magnetic field energy taking module comprises a bus bar and an energy taking coil, the energy taking coil is installed on the outer surface of the bus bar in an attached mode to obtain induced voltage, and the energy taking coil forms 5V direct-current output voltage through a front end impact protection circuit, a rectification filter circuit and a voltage stabilizing circuit in sequence to be connected to intelligent sensing equipment. Compared with a straight-through coil, the pasting type energy taking coil has the advantages of being simple in structure, convenient to install, small in size and the like; and in addition, in some specific occasions, busbars are arranged compactly, and great inconvenience is brought to installation of the straight-through coil.

The invention relates to the technical field of power cables, and especially relates to a power cable with a cross-linked polyethylene insulated polyvinyl chloride sheath. The power cable comprises aheat conduction filling core; an anti-interference layer is fixedly connected to the inner side of each of a plurality of uniformly distributed mounting holes formed in the heat conduction filling core; the inner side of each anti-interference layer is fixedly connected with a high-temperature-resistant layer; the inner side of each high-temperature-resistant layer is fixedly connected with an insulating layer; each insulating layer is internally provided with a spiral hole; the inner side of each spiral hole is provided with an inner wire core; the outer side of each inner wire core is fixedly connected with a plurality of uniformly distributed outer wire cores; and each outer wire core is fixedly connected to the inner side of the spiral hole. By arranging the heat conduction filling core, the high-temperature-resistant layer, the anti-interference layer, the tensile layer, a high-elasticity springback rope, a waterproof and damp-proof layer, a protective sheath and wear-resistant strips, the cable has high high-temperature resistance, heat conduction, tensile strength, wear resistance and the like, and has anti-interference, anti-breaking and springback functions and the like.

The invention discloses a waveform synthesis method with a notch pattern, which solves the problem that the pattern of the existing transmitted signal cannot form a notch in the interference direction. The implementation scheme is: 1. Find the optimal covariance matrix and interference subspace of the transmitted signal, and construct a cost function with a notch pattern; 2. Use the sequence unconstrained minimization method to convert the cost function into an unconstrained function 3. The unconstrained function is optimized by the block gradient descent method to obtain the final cost function; 4. The closed-form solution is obtained by solving the final cost function; 6. Determine whether the corrected transmit waveform satisfies the anti-jamming condition: if so, take the corrected transmit waveform as the radar transmit waveform, if not, take the optimized transmit signal as the initial transmit signal, and return to 5 to continue the iteration. The invention can synthesize the constant-modulus emission waveform with the notch pattern, and can be used for the design of the emission waveform.

The invention discloses a synthetic method for an MIMO (Multiple Input Multiple Output) radar transmitted waveform based on a coordinate descent algorithm. The invention mainly aims at solving the problems that the transmitted waveform synthesized in the prior art does not have an anti-jamming function or a constant modulus characteristic. The synthetic method comprises the following specific steps: firstly, constructing a jamming airspace steering vector; secondly, constructing an emission signal covariance matrix; thirdly, synthesizing an MIMO constant modulus transmitted waveform matrix; fourthly, revising elements in the MIMO constant modulus transmitted waveform matrix by adopting a coordinate descent algorithm for a following formula; fifthly, taking the elements in each line in theMIMO constant modulus transmitted waveform matrix as a transmitted waveform of each array element of radar. The synthetic method for the MIMO radar transmitted waveform based on the coordinate descentalgorithm, disclosed by the invention, has the advantage that the MIMO radar transmitted waveform with the anti-jamming function and the constant modulus characteristic can be synthesized.

The invention relates to an anti-seizing Z-axis balancing device. The anti-seizing Z-axis balancing device comprises a Z-axis moving module, two non-rod air cylinder bodies, non-rod air cylinder slide blocks, sliding chute pieces and fixed pieces, wherein the two non-rod air cylinder bodies are arranged in parallel to each other, the non-rod air cylinder slide blocks are installed on the non-rod air cylinder bodies, the sliding chute pieces are connected with the non-rod air cylinder slide blocks, and the fixed pieces are connected with the Z-axis moving module; and the fixed pieces are connected with slide columns, sliding chutes are formed in the sliding chute pieces, the slide columns are located in the sliding chutes and slide in the X-axis direction, gaps exist between the slide columns and the sliding chutes in the Z-axis direction, and gaps exist between the fixed pieces and the sliding chute pieces in the Y-axis direction. According to the anti-seizing Z-axis balancing device, the machining precision of installed parts can be reduced, the coaxiality of air cylinders in the installing process can be reduced, the requirement for the parallelism degree between the air cylinders and slide rails can be reduced, and the anti-seizing function is achieved.

The invention relates to the technical field of media streams, in particular to a media stream playing control method based on TCP or KCP. The method comprises the following steps of: establishing dual connection with a media stream source; acquiring a current network type and a network speed condition; selecting a playing mode according to the network type and the network speed condition, and after the selection of the playing mode is completed, caching unplayed parts while playing; and when the user performs fast forward playing under the normal playing condition, triggering a short waiting playing mechanism. According to the media stream playing control method, by setting and establishing dual connection with the media stream source, acquiring the current network type and the network speed condition, and selecting the playing mode according to the network type and the network speed condition, when the user performs fast forward playing under the normal playing condition, the short waiting playing mechanism is triggered, and therefore, the method has the functions of disconnection prevention, jamming prevention, play mode selection, quick loading and the like.

The invention provides a tamper circuit based on an STM32 chip. The tamper circuit comprises a battery, a switch and a resistor-capacitor (RC) charge-discharge circuit, wherein the battery is respectively connected with one end of the switch and a real time clock (RTC) register in the STM32 chip and supplies power for the RTC register, the other end of the switch is connected with one end of the RC charge-discharge circuit, and the other end of the RC charge-discharge circuit is connected with a TAMPER pin of the STM32 chip. According to the tamper circuit, additional chips (ICs) are not required to be added to achieve tamper functions, the tamper time is easy to control, and the tamper circuit is high in tamper sensitivity, low in cost, good in performance and interference resistance characteristics and long in service life of the battery.

The invention discloses a mobile water quality environment measuring device with an anti-interference function, the mobile water quality environment measuring device comprises an upper shell and a lower shell, a supporting plate is arranged in the upper shell, a measuring instrument is arranged above the supporting plate, a fixed shell is arranged below the supporting plate, an extraction chamber is arranged in the fixed shell, a piston piece is arranged in the extraction chamber, and the piston piece is arranged in the upper shell. A medicine inlet pipe is arranged above the extraction chamber, a reagent pipe is arranged below the fixed shell, and a reagent bottle is connected below the reagent pipe. According to the mobile water quality environment measuring device with the anti-interference function, the whole detecting device can stretch out and draw back through the arranged mobile sliding groove, so that the size of the original large-size detecting device can be reduced, long-distance transportation is facilitated, meanwhile, short-distance movement of the device can be guaranteed through the arranged mobile wheels, and the practicability is high. And meanwhile, the arranged buffer blocks can effectively prevent internal parts from being damaged in the moving process of the device.

The invention relates to the technical field of anti-interference equipment, and discloses an electronic transmitter with an anti-interference function. The electronic transmitter comprises a mounting box, a sliding groove is formed in the inner wall of the front surface of the mounting box, and a sliding block is movably mounted in the sliding groove. A motor rotates to drive a conveying belt to rotate, adjacent movable plates can be driven to move in the opposite directions when rotating screw rods rotate, the movable plates cannot deviate in the direction when moving, when the movable plates move towards one side of a second connecting pipe, the movable plates can generate flowing air through the second connecting pipe, and a fixed baffle is fixedly installed in the second connecting pipe; when the electronic transmitter works, wind in the second connecting pipe is led to the interior of the first connecting pipe through the fixed baffle and then blown to the electronic transmitter through the first connecting pipe, so that the electronic transmitter is cooled, and it is ensured that heat generated when the electronic transmitter works does not interfere with normal work of the electronic transmitter.