35results about How to "Control conduction" patented technology

The invention provides a charging system and method of a mobile terminal and a charger. The charger comprises a power interface, a charging interface, a communication interface, a charging path controller and a control chip, wherein the power interface is connected with an external power supply, the charging interface is connected with a charging interface of the mobile terminal, the communication interface is in communication with the mobile terminal and used for acquiring the current electric quantity of the mobile terminal, the charging path controller is connected with the power interface and the charging interface and used for controlling the connection and disconnection of a charging path between the power interface and the charging interface, the control chip is connected with the communication interface and the charging path, and the control chip controls the charging path between the power interface and the charging interface to be disconnected through the charging path controller when the current electric quantity of the mobile terminal is larger than a preset threshold value. The charger has the advantages that loss of a mobile terminal battery is reduced, and the actual service life of the mobile terminal battery is prolonged.

The invention discloses an oscillator structure capable of generating high-stability frequency in a full condition. The oscillator structure comprises a current reference current source, an image current charge-discharge circuit and a hysteresis comparator circuit. The current reference current source is composed of a P1, a R1 and a R2. The image current charge-discharge circuit is composed of a P2, a C1 and an N1. The hysteresis comparator circuit is composed of a comparator and a Schmidt comparator. A reference voltage VR generated among the P1, the R1 and the R2 is used as a comparing input end of a comparator CMP. The oscillator structure capable of generating the high-stability frequency in the full condition achieves the stability of output frequency of an oscillator in the range of full temperature and full working voltage.

The invention discloses a light emitting diode (LED) drive circuit controlled by a parallel connection high voltage metal oxide semiconductor (MOS) tube and mainly solves the problem that existing drive circuits can not integrate effects of low costs and high efficiency and power factors. The LED drive circuit comprises a rectifier bridge, a control circuit, N strings of loads, N high voltage MOS tubes and N voltage reference circuits, the rectifier bridge is used for performing full-wave rectification for an alternating current signal, the N strings of loads are in a series connection in a single group mode and are in a bridge joint between the rectifier bridge and a drain electrode of the Nth high voltage MOS tube, common ends of two adjacent strings of loads are connected to drain electrodes of corresponding high voltage MOS tubes respectively, grid electrodes of the N high voltage MOS tubes are connected with the N voltage reference circuits respectively, source electrodes of the N high voltage MOS tubes are connected and connected to the control circuit, the control circuit detects current of the loads to adjust the voltage of the source electrodes of the high voltage MOS tubes so as to control the working states of the high voltage MOS tubes, and thereby the loads of an access circuit can be adjusted. The LED drive circuit controlled by parallel connection high voltage MOS tube has the advantages that peripheral devices are few, the service life is long, the efficiency and power factor are high, and the LED drive circuit can be directly integrated on a lamp panel carried with LED strings.

The invention discloses a thermoelectric power generation barbecue oven which comprises a barbecue oven body and a thermoelectric power generation system. The barbecue oven body comprises a barbecue oven wall and cooling fins. The thermoelectric power generation system comprises a thermoelectric power generation layer and a thermoelectric power generation circuit. The bottom of the barbecue oven wall is provided with a heat conducting layer. The thermoelectric power generation layer is fixed below the heat conducting layer through fastening screws. The cooling fins are arranged below the thermoelectric power generation layer. A heat-dissipating fan is fixed to the bottoms of the cooling fins. The thermoelectric power generation layer is provided with a plurality of sets of thermoelectric power generation modules. Each thermoelectric power generation module is formed by connecting thermoelectric power generation pieces in series. All the thermoelectric power generation modules are connected in parallel and then connected with the thermoelectric power generation circuit. As all the thermoelectric power generation modules are connected in parallel, higher output power can be obtained, all the thermoelectric power generation modules can be used individually, and damage of one thermoelectric power generation module does not influence the normal power generation work of the whole system. According to the thermoelectric power generation principle, superfluous heat energy of the barbecue oven is converted into electric energy to be stored in a lithium battery, energy sources are saved, and the barbecue oven is environmentally friendly.

The invention discloses a double-knife high voltage isolating switch which comprises a holder. Insulators are symmetrically installed at both sides of the top of the holder, and contactor seats are fixedly installed on the top of the insulators. Latching plates are arranged on the contact seats. A shaft rod passes through and is installed in the middle of an upper surface of the holder, and a knife driving device is installed on a side wall of the shaft rod. The latching plates are connected or disconnected by using two S-shaped knives and two -shaped knives, and the current conduction can be effectively and stably controlled. Rotational directions of the S-shaped knives are made different through mutual cooperation of a driven fluted disc, a driving fluted disc, and a bevel gear shaft. It is convenient to use the isolating switch. The -shaped knives are in butt joint with matched contact blocks by using a rolling disc and an eccentric motion principle, and a virtual connection phenomenon when a single knife switch is used can be effectively prevented. Contact pins can be effectively prevented from falling off from pin holes by installing spacer pins in the pin holes.

The invention discloses an IGBT isolation driving circuit with a switch control unit and a control method thereof. The circuit comprises a pulse driving unit for generating waveform signals with complementary phases, a diode rectification unit, the switch control unit, a driving resistor, a switch-off resistor and an insulated gate bipolar transistor (IGBT), output terminals of the driving resistor and the switch-off resistor are both connected with a grid electrode of the IGBT, an emitter electrode of the IGBT is connected to the ground, an input terminal of the switch control unit is connected with the diode rectification unit, and an output terminal of the switch control unit is connected with an input terminal of the switch-off resistor to control cut-off of the IGBT when the pulse driving unit stops signal output. According to the circuit, the driving energy can be transmitted, the transmission of switch signals is completed, cut-off and switch-on of the IGBT can be well controlled through the switch control unit, the circuit can be applicable to a low-frequency condition, and the practicality is high.

The invention discloses a double-knife high voltage isolating switch which comprises a clamp holder. Insulators are symmetrically arranged on both sides of the top of the clamp holder. A contact base is fixedly arranged at the top of each insulator. A locking plate is arranged on each contact base. A shaft lever is inserted into the middle upper surface of the clamp holder. A knife driving device is arranged on the side wall of the shaft lever. The locking plates are connected or disconnected through two S-shaped knives and two straight knives. Current conduction can be effectively and steadily controlled. Through mutual interaction of a driven gear disk, a drive gear disk and an umbrella gear shaft, the rotation directions of the S-shaped knives are opposite, which facilitates the use of the isolating switch. A rotary disk is used, and the principle of eccentric movement is used to realize butt joint of the straight knives and matched contact blocks, so as to effectively avoid the phenomenon of virtual connection when a single knife is used. A contact pin is effectively prevented from falling off from a pin hole by arranging a limit pin in the pin hole.

The invention discloses a device and method for detecting continuous light emission of a multi-channel optical network unit. The device for detecting continuous light emission of the multi-channel optical network unit comprises a multi-channel relay switch, a multi-channel analyzer and a control unit, wherein the multi-channel relay switch is connected with each optical network unit to be detected and used for controlling turn-on and turn-off of current between each optical network unit to be detected and a power supply; the multi-channel analyzer is connected with each optical network unit to be detected and used for obtaining and outputting the optical power value of each optical network unit to be detected; and the control unit is respectively connected to the multi-channel analyzer and the multi-channel relay switch and used for controlling turn-on or turn-off of the multi-channel relay switch and obtaining the optical power value of each optical network unit to be detected from the multi-channel analyzer, such that whether each optical network unit to be detected is in the continuous light emission state or not can be judged.

The invention discloses a sludge discharging device for sewage treatment. The sludge discharging device comprises a settling chamber, and a filter chamber, a coarse channel and a fine channel which are arranged below the settling chamber. The filter chamber is provided with a sludge discharge port communicated with the settling chamber, the sludge discharge port is provided with a flow isolation mechanism, and the flow isolation mechanism is provided with a sliding flow isolation block for closing or opening the sludge discharge port; the coarse channel and the thin channel are arranged belowthe filter chamber, the upper ends of the coarse channel and the thin channel are both communicated with the filter chamber, and the lower ends of the thin channel and the coarse channel are both communicated with the converging chamber; a filtering plate is arranged in the filter chamber, a plurality of filtering holes are formed in the filtering plate, the filtering plate is located above the communicating opening of the thin channel and the converging chamber, a crushing mechanism is arranged in the coarse channel, the crushing mechanism comprises a support and a crushing blade assembly, the crushing blade assembly is installed on the support, and the support is fixed to the inner wall of the coarse channel. Sludge can be screened and crushed, the problem of blockage of a pipeline or equipment is avoided, and the sludge treatment efficiency is improved.

The invention relates to the preparation for a controllable polarized membrane and the application thereof, in particular to using a high molecular material for preparing an isotropic netty nano fiber membrane by the electrospinning technology; then the nano fiber membrane is compounded with a liquid crystal material and pulled along polarization direction needed, which causes nano fiber to be oriented along the pulling direction and guides the orientation of the pulling direction of liquid crystal, thereby obtaining the membrane with a controllable preparation direction. The membrane can be applied to the display and sensing fields. The preparation comprises the following steps: A. a disordered netty electrospinning nano fiber membrane is prepared at first; B. secondly, the liquid crystal material is injected into and compounded with the netty electrospinning nano fiber membrane; C. the netty electrospinning nano fiber membrane compounded with the liquid crystal material is pulled along the direction needing orientation, and the nano fiber on the nano fiber membrane is led to be oriented along the pulling direction and the liquid crystal is induced to be arranged along the orientation of the nano fiber by the surface of the nano fiber membrane, thereby realizing the control of the polarization orientation of light.

The invention relates to a battery management system (BMS) pre-charging circuit and a control method thereof. The BMS pre-charging circuit includes an AFE front end detection unit, an MCU controller, a short circuit detection unit, a detection resistor, a pre-charging resistor, a pre-charging MOS tube, and a main power MOS tube, and the corresponding control method includes the following steps that S1, a charging current is sampled; S2, the AFE front end detection unit judges whether a sampled charging current value is greater than or equal to a preset overcurrent threshold or not, if yes, the step S3 is performed, otherwise, the step S1 is returned; S3, overcurrent protection is performed; S4, the pre-charging process is performed; and S5, normal power on is recovered. Compared with the prior art, without changing an original connection mode, that is, an external ignition signal is not input, the BMS pre-charging circuit can effectively solve the problem that a power part cannot be powered on normally due to overcurrent protection in the moment of power on.

The invention discloses a power-off reset system applied to electronic equipment, which comprises a current detection module, a relay module and a processor module, wherein the current detection module is connected with a power supply and used for detecting the power supply current of the power supply to the electronic equipment; the input end of the relay module is connected with the current detection module, the output end is connected with the electronic equipment, and the relay module is used for controlling the turn-on or turn-off of the power supply to the electronic equipment; and the processor module is connected with the current detection module and the relay module, the processor module acquires a current value detected by the current detection module, judges whether the operation of the electronic equipment is abnormal or not according to the current value, and sends a power-off reset signal to the relay module if the operation is abnormal so as to enable the electronic equipment to be subjected to power-off reset. The system can performs power-off reset on the electronic equipment in a forcible manner when the electronic equipment breaks down so as to enable the electronic equipment to be in a normal working state again.

The invention provides a charging circuit, electronic equipment and a charging method. The charging circuit comprises a power management chip PMIC, a main charging circuit and at least one slave charging circuit. In the embodiment of the invention, the total power loss of a first triode in the main charging circuit and a second triode in the slave charging circuit is lower than the power loss of a triode in the charging circuit in the prior art by using the main charging circuit and the slave charging circuit to jointly charge a battery, so that the charging efficiency of the battery of the electronic equipment is improved; and moreover, the heat generation degree caused by the power loss of the first triode and the second triode is reduced, and the application performance of the first triode and the second triode is improved.

The invention discloses a new energy automobile lithium battery charging and discharging protection circuit and a controllable voltage source adjusting method. The protection circuit comprises an over-charge protection module, a voltage control module, an over-current operation module, a discharge protection module and an over-discharge adjustment module, and a triode Q3 in the over-charge protection module obtains a feedback voltage value of the voltage control module through a base electrode end, so that an emitter electrode end is conducted to prevent over-charge voltage from passing through; a transistor Q6 in the voltage control module serves as a contactless switch to transmit control ground voltage to the over-current operation module; an operational amplifier U2 in the over-currentoperation module starts a protection device by comparing a preset ground current parameter and a received current, and a capacitor C4 provides a storage voltage for the operational amplifier U2 to improve the operation speed; a diode D7 in the discharge protection module is used for unidirectional output of the voltage to prevent reverse transmission of the voltage during discharge; and a capacitor C8 in the over-discharge adjusting module is used for generating power shortage of a lithium battery B1 during over-discharge so as to provide a storage voltage to reduce the damage of discharge equipment.

The invention discloses a power switching circuit, a power switching method, a wire controller and air conditioning equipment. The circuit comprises a Homebus power supply module and a battery module,and one of the Homebus power supply module and the battery module is selectively conducted with a wire controller through a power supply switching module to supply power to the wire controller; one end of the power supply switching module is connected with the Homebus power supply module and the battery module, the other end of the power supply switching module is connected with the wire controller, and the power supply switching module is used for controlling the battery module to be conducted with the wire controller when the first current and the second current meet preset conditions; andwhen the first current and the second current do not meet the preset condition, the Homebus power supply module is controlled to be connected with the wire controller, wherein the Homebus power supplymodule outputs the first current, and the battery module outputs the second current. According to the invention, the wire controller can be prevented from stopping working due to insufficient power supply, and the stability is improved.

The invention provides a waterlogging sensor and a rust-proof method for waterlogging sensor probes. According to the waterlogging sensor, the first probe of the waterlogging sensor is connected witha first IO interface in a microcontroller unit (MCU) of the waterlogging sensor, and the second probe of the waterlogging sensor is connected with a second IO interface in the MCU, wherein output states of the first IO interface and the second IO interface in the same period are complementary, the output states comprise high level output and low level output, and during the adjacent periods, the output state of the first IO interface and the output state of the second IO interface are alternated between high level output and low level output; and in the process of water entry probing in the same period, the first probe and the second probe communicate, and electronic backflow is formed. According to the waterlogging sensor and the rust-proof method, electronic losses of the two probes arecompensated in an electric quantity consuming mode to prolong the service life of the waterlogging sensor probes and decrease the rusting probability so as to solve the problem that stainless steel probes are still rusted when being in water for a long time.

The invention provides a material inputting device and a cooking appliance. The material inputting device comprises a feeding channel and a movable seal. The feeding channel is arranged in an upper cover and / or a pot body of the cooking appliance. The movable seal is limited in the feeding channel and can reciprocate in the feeding channel to disconnect or conduct the feeding channel. A movable seal is provide in the feed passage, the reciprocating movement of the movable seal in the feeding channel is used to control whether the feeding channel is connected or not, so that the feeding channelcan be in a connected state during the feeding process, and in the non-feeding process, is in a disconnected state (i.e., sealing the feeding channel), thereby solving the problem that water droplets, dirt, rice grains or cockroaches and other pests enter the rice feeding pipe because the rice feeding pipe is always in a conducting state in the prior art, and improving the cleanliness and reliability of the material feeding device.

The invention discloses a RAID card power supply circuit, which comprises a PMOS tube, a current detection unit and an OR operation unit; the D terminal of the PMOS tube is connected with the current detection unit, and the S terminal of the PMOS tube is connected with the power-down protection of the RAID card The backup power unit in the circuit is connected, the G terminal of the PMOS transistor is connected to the output terminal of the OR operation unit, or the input terminal of the operation unit is respectively connected to the output terminal of the current detection unit and the output of the power failure detection unit in the power failure protection circuit The current detection unit is set between the backup power unit and the RAID card. It is used to determine that the line between the backup power unit and the RAID card is over-current when the backup power unit is supplying power to the RAID card. Output high level to control the PMOS tube to turn off. The damage to the backup power unit due to overcurrent can be avoided, and the body diode contained in the PMOS tube can be used to realize the anti-leakage function.

The invention discloses an oscillator structure capable of generating high-stability frequency in a full condition. The oscillator structure comprises a current reference current source, an image current charge-discharge circuit and a hysteresis comparator circuit. The current reference current source is composed of a P1, a R1 and a R2. The image current charge-discharge circuit is composed of a P2, a C1 and an N1. The hysteresis comparator circuit is composed of a comparator and a Schmidt comparator. A reference voltage VR generated among the P1, the R1 and the R2 is used as a comparing input end of a comparator CMP. The oscillator structure capable of generating the high-stability frequency in the full condition achieves the stability of output frequency of an oscillator in the range of full temperature and full working voltage.

The invention discloses a RAID card power supply circuit, which comprises a PMOS transistor, a current detection unit and an operation unit. The D terminal of the PMOS transistor is connected with a current detection unit, the S terminal of the PMOS transistor is connected with the standby unit in the power-down protection circuit of the RAID card, the G terminal of the PMOS transistor is connected with the output terminal of the OR arithmetic unit, or the input end of the operation unit is respectively connected with the output end of the current detection unit and the output end of the power-down detection unit in the power-down protection circuit, The current detection unit is arranged between the power standby unit and the RAID card, and is used for outputting a high level to control the PMOS transistor to be turned off if it is judged that the line between the power standby unit and the RAID card is overcurrent during the power supply of the power standby unit to the RAID card. The over-current damage to the standby unit can be avoided, and the body diode contained in the PMOS transistor can be utilized to realize the anti-leakage function.

The invention discloses a current one-way conduction circuit and a working method thereof, the current one-way conduction circuit comprises an input end Vin, an output end Vout, an MOS tube, a current mutual inductance module, a voltage comparator and a voltage division module, the input end Vin is connected with the voltage division module, the input end Vin is connected with a drain electrode of the MOS tube, a source electrode of the MOS tube is connected with the current mutual inductance module, and the output end Vout is connected with the current mutual inductance module. The current mutual inductance module is connected with the output end Vout, the voltage comparator is connected with the voltage dividing module, the voltage comparator is connected with the current mutual inductance module, and the voltage comparator is connected with the grid electrode of the MOS tube. Therefore, one-way conduction of current can be realized, energy loss can be reduced, and charging efficiency can be improved.

A household appliance safety door lock comprises a base, a door hook, a first sliding block, an electromagnetic switch box and a second sliding block arranged between the electromagnetic switch box and the base. A door lock opening is formed in the position, corresponding to the door hook, of the base. A limiting opening is formed in the middle of the first sliding block. The electromagnetic switch box comprises a box base, a static contact arranged in the box base, a movable contact spring which is arranged in the box base and is opposite to the static contact, a locking block which movably protrudes out of the bottom surface of the box base, and an ejector rod which is positioned on one side, far away from the box upper cover, of the movable contact spring and movably protrudes out of the bottom surface of the box base; the limiting opening is movably opposite to the locking block, an acting protruding block is arranged on one side of the second sliding block in a protruding mode, a guide inclined face is arranged on the acting protruding block, and the ejector rod is located above the acting protruding block. Therefore, the use state of the door can be truly corresponding, so that the conduction circuit is controlled to be switched on or switched off, and the safety is improved.

The invention discloses a flower-watering dual spray pipe mechanism which comprises a mounting plate. The mounting plate is provided with a first spray pipe, the first spray pipe is provided with a control switch, the control switch is provided with a knob, the mounting plate is provided with a second spray pipe, and the second spray pipe is provided with a switch. The flower-watering dual spray pipe mechanism can be in butt joint with a water spraying machine conveniently through the first spray pipe and the second spray pipe, water is sprayed conveniently through the water spraying machine, and thus flowers are watered conveniently. The water flow connection can be controlled through the knob and the switch.

The invention discloses a protection control circuit, a navigation system, a communication terminal and a control method, through setting a selection control circuit, when a signal of an enable signal end and a signal of a load connection end are both at a second level, the selection control circuit can output a conduction control signal to control a switch control unit to be conducted, so that the protection control circuit is switched on; therefore, the output end of the to-be-protected unit and the load connecting end are controlled to be conducted, and a signal output by the to-be-protected unit can be input into a load through the load connecting end. When at least one of the signal of the enable signal end and the signal of the load connection end is the first level, the selection control circuit can output a disconnection control signal to control the switch control unit to be disconnected so as to control the output end of the unit to be protected to be disconnected from the load connection end, and therefore the situation that due to load short circuit, the load is damaged can be effectively avoided. And the problem that the output current of the unit to be protected is too large to burn out is solved.

The invention discloses a self-discharge voltage stabilizing device for a display, including a linear voltage stabilizing unit, a switch unit and a self-discharge unit. The self-discharge unit is electrically connected with an output end of a first transistor of a linear voltage stabilizing unit for improving the accuracy of the output voltage of the first transistor.

Provided is a switch board with a wireless transmission device. The switch board is formed by a panel, switches, and an emitter. The switch board is characterized in that the switches are arranged on the front surface of the panel, and the switches are connected with the emitter. When the switches are turned on, the emitter converts electric signals to wireless signals and sends out the wireless signals; when the switches are turned off, the emitter stops transmitting the wireless signals, the turn-on and turn-off of the wireless signals are realized via the switches, and the wireless control mode of power-off of a water heater plug is effectively solved.

The invention discloses a channel operational amplifier circuit with low power consumption, which comprises an input stage circuit, an output stage circuit, a voltage adjustment circuit and a detection circuit. The output stage circuit includes first and second transistors. The first and second transistors are connected in series between the working voltage and the ground voltage. The input stage circuit is coupled to the gates of the first and second transistors, receives the input voltage and the output voltage and outputs the first and second gate control voltages to the gates of the first and second transistors. The voltage adjustment circuit includes third and fourth transistors. The third transistor is coupled between the working voltage and the second gate control voltage. The fourth transistor is coupled between the first gate control voltage and the ground voltage. The detection circuit detects the input voltage and the output voltage and selectively controls the operation of the third and fourth transistors to adjust the first or second gate control voltage. The invention provides a low-power channel operational amplifier circuit, which can effectively reduce the steady-state current and save power consumption.

The invention provides an environment-friendly low-temperature drying method and equipment for pepper production, and belongs to energy-saving agricultural product drying machinery. The environment-friendly low-temperature drying equipment comprises a box body; a drying groove is arranged at the top of one side in the box body; an overturning mechanism for overturning pepper is arranged in the drying groove; a first transmission mechanism used for rotating the overturning mechanism is arranged at the top of one side of the box body; a dust removal groove is arranged at the bottom of one side in the box body; a dust suction mechanism is arranged in the dust removal groove; a second transmission mechanism is arranged between the turnover mechanism and the dust suction mechanism; and a driving mechanism is arranged on the second transmission mechanism. According to the environment-friendly low-temperature drying equipment provided by the invention, through the arranged second transmission mechanism and forward rotation of a second stepping motor of the second transmission mechanism, air suction fan blades of the driving mechanism can be made to rotate, under the action of the air suction fan blades, dust thrown out by pepper overturning can be sucked into the dust removal groove, the dust can be collected through the dust collection mechanism, and dust removal of pepper is achieved.

The invention provides environment-friendly physical drying equipment and method for dirt. The equipment comprises a box body, a feeding mechanism used for crushing the dirt and feeding crushed materials into the box body is arranged on one side of the box body, a heat energy mechanism used for recycling hot air generated by dirt drying is arranged on the feeding mechanism, a drying mechanism used for drying the dirt is arranged in the box body, a communicating part is arranged between the drying mechanism and the feeding mechanism, and a control mechanism matched with the drying mechanism is further arranged in the box body. According to the equipment, through the arranged feeding mechanism, the dirt can be crushed, through the drying mechanism, the crushed dirt can be dried, the hot air generated through drying can pass through a second cavity of a feeding part under the action of exhaust fan blades of the feeding mechanism, and then the crushed dirt stored in the feeding part can be preheated, so that heat energy can be recycled, the utilization rate of resources is increased, and the dirt drying efficiency is improved.

The application provides an environment-friendly physical drying equipment and method for dirt, including a box, one side of the box is provided with a feeding mechanism for pulverizing the dirt and sending the pulverized materials into the box. The material mechanism is provided with a heat energy mechanism for recycling the heat generated by the drying of the dirt, and the drying mechanism for the drying of the dirt is arranged in the box, and a conduction part is set between the drying mechanism and the feeding mechanism. A control mechanism matching the drying mechanism is also provided. The present application can pulverize the dirt through the feeding mechanism provided, and dry the pulverized dirt through the drying mechanism, and the heat generated by drying can make the The hot air passes through the second cavity of the feed piece, and then the crushed dirt stored in the feed piece can be preheated, which not only realizes the repeated use of heat energy, improves the utilization rate of resources, but also improves the drying efficiency of the dirt. efficiency.