32results about How to "Extend power-on time" patented technology

A wireless communication system for a vehicle, including: a portable transmitter-receiver adapted to communicate information wirelessly; a main controller mounted on the vehicle, the main controller adapted to communicate information wirelessly with the portable transmitter-receiver, to determine whether the portable transmitter-receiver is located within a communicatable range, and to output an enable signal when the portable transmitter-receiver is located within the communicatable range; a sub-controller mounted on the vehicle and connected to the main controller, the sub-controller adapted to enable-control of a vehicle mounted electronic device when the enable signal is input from the main controller.

The invention discloses a memristor-based XOR gate circuit and a designing and manufacturing method thereof, which aims to solving the problem that a currently available memristor-based auxiliary logic MACIG gate set is incomplete. Therefore, the invention provides a new type of memristor-based XOR gate circuit designing method. The XOR gate of the invention is improved on the basis of the MAGIC OR gate. According to the invention, the two ends of the output memristor of the OR gate circuit are connected with memristors in parallel and the improved gate circuit is capable of obtaining correct XOR gate logic operation result. The XOR gate adopts fewer components with only four memristors and the excitation voltage sequence is simple, requiring only one stable and unchanging externally added excitation source. In addition, the energy comsumption of the XOR gate is low. Only with the exertion of short-term voltage, it is possible to realize the logic operations to the XOR gate. Beyond that, the XOR gate circuit has a simple structure and a small size.

High print quality from a thermal printer is maintained while the print speed is decreasing without producing white streaks or uneven print density by controlling the hysteresis coefficient of the thermal print head 35 based on the energizing history of the thermal print head 35 and print speed control factors used for determining print speed,which is the speed at which the paper is advanced while printing. The thermal printer, comprises a hysteresis coefficient setting unit 2 for setting a hysteresis coefficient for the print head based on the energizing history of the thermal print head 35; an energizing time calculation unit 3 for calculating the energizing time during which drive signals are to be applied to the thermal print head 35 for printing based upon the hysteresis coefficient set by the hysteresis coefficient setting unit; a printing control device 4 for generating the drive signals to be applied to the print head in response to the energizing time calculated by the energizing time calculation unit 3; a print speed determination unit 5 for determining the change in the print speed and when the print speed is decreasing; and a coefficient changing unit 6 for changing the hysteresis coefficient when a change in print speed occurs causing the print speed to decrease. Preferably the coefficient changing unit changes the hysteresis coefficient to a value greater than the hysteresis coefficient value used immediately before deceleration.

The invention discloses a braking circuit of an electromagnetic brake. One end of a stop button is connected with the positive electrode of a power supply, the other end of the stop button is connected with the negative electrode of the power supply through a start button and a coil of a second alternating current contactor in sequence, a third normally open contact of the second alternating current contactor is connected to the two ends of the start button in parallel, and a coil of an intermediate relay is connected to the two ends of the coil of the second alternating current contactor in parallel; one end of a normally open contact of the intermediate relay is connected with the positive electrode of the power supply, the other end of the normally open contact of the intermediate relay is connected with the negative electrode of the power supply through a coil of a first alternating current contactor, and a normally open contact of the first alternating current contactor is connected between the power supply and a motor; one end of a first normally open contact of the second alternating current contactor is connected with the power supply, and the other end of the first normally open contact of the second alternating current contactor is connected with a coil of the electromagnetic brake. According to the braking circuit, after a brake shoe of the brake is released, the motor can run again, so that safe start is guaranteed.

The invention belongs to the technical field of water pollution control and particularly relates to a method for purifying water by killing algae by using micro-current and the application of the method. The method is characterized in that two electrodes are put in water with algae and connected with a direct-current motor so that the upper electrode and the lower electrode have a certain current density, and the alga cells are killed after a certain period of time and sunken to the bottom of the water so that the water is purified. The micro-current has the significant function of killing a variety of algae including microcystis, aphanizomenon, anabaena, quadrigula chodatii and scenedesmus and is suitable for lakes, ponds and other water environment.

The invention relates to a large-diameter direct-acting type high-pressure solenoid valve. The large-diameter direct-acting type high-pressure solenoid valve which is of a coaxial integral structure comprises a valve body, a coil housing, a coil, a spring, a valve core, a valve seat and an O ring, wherein the valve body is arranged on the upper part of the solenoid valve, medium inlet connecting threads are formed on the upper end of the valve body, a solenoid coil is wound on the circumference of the middle part of the valve body, and the coil housing is arranged on the outer side of the solenoid coil. According to a control method, a two-position two-way direct-acting type structure is adopted, the solenoid valve is opened after energization and is closed after deenergization, and a fluid medium flows into from the upper part of the valve body and flows out from the lower part of the valve seat. Compared with the prior art, the large-diameter direct-acting type high-pressure solenoid valve has the obvious advantages that (1) the diameter is large, the working pressure is high, the sustainable conduction time is long, and therefore, large-flow media can be continuously and stably supplied; (2) the action response speed is high (less than or equal to 10 ms), the solenoid coil of the solenoid valve is large, the sectional area of the valve core is large, so that large electromagnetic force can be generated, and therefore, the response speed is high.

The invention discloses an intelligent lock control system for the electric power field and a control method, and belongs to the technical field of electric power field application systems. The intelligent lock control system comprises a main control terminal, a lock control terminal and a mobile terminal, and the lock control terminal and the mobile terminal are both in communication connection with the lock control terminal; the main control terminal is provided with a main control computer; the mobile terminal comprises a RFID label and communication equipment; and the lock control terminalcomprises a power supply module, a control module and an intelligent lock, wherein statistical information is recorded in the control module, the intelligent lock is electrically connected to the control module and is internally provided with a RFID code chip, the RFID code chip reads identification information recorded by the RFID label and sends the identification information to the control module, the control module makes a comparison to judge whether a holder has the unlock permission or not and sends the unlock request to the main control computer when the holder is judged to have the unlock permission, and the main control computer sends dynamic passwords to the communication equipment and the control module at the same time. By adopting a mode of identifying first and then authorizing unlocking to carry out progressive management, the intelligence, the safety and the effectiveness of power security and protection management are improved.

The invention discloses an improved brake circuit of an electromagnetic brake. One end of a stop button is connected with the positive electrode of a power source, and the other end of the stop button is connected with the negative electrode of the power source in sequence through a start button and a coil of a second alternating current contactor. A first normally open contact of a first alternating current contactor is connected with the two ends of the start button in parallel. A branch formed by connecting a power-on delay normally open contact of the second alternating current contactor with a coil of the first alternating current contactor in series is connected with the two ends of the coil of the second alternating current contactor in parallel. A normally open contact of the first alternating current contactor is connected between the power source and a motor. One end of a normally open contact of the second alternating current contactor is connected with the power source. The other end of the normally open contact of the second alternating current contactor is connected with a coil of the electromagnetic brake. By means of the improved brake circuit of the electromagnetic brake, the motor operates after a brake shoe of the brake is loosened, and safe startup is guaranteed.

The invention discloses a VPX power supply. The VPX power supply comprises a power supply board card and a plugging assistant device fixed at the upper end of the power supply board card, wherein the plugging assistant device comprises a microswitch and controls on-off of the microswitch so as to control working state of the VPX power supply. The invention further discloses a hot-plugging realizing method of the VPX power supply. Surge current produced when the VPX power supply is plugged is reduced, power-on time of the power supply is prolonged, flash spark caused by high impact current when the power supply is plugged is avoided, the VPX power supply stops working immediately when the VPX power supply is pulled out, and the VPX power supply is protected.

The invention discloses a same-frequency LED lighting source construction method for detecting product surface two-dimensional defects. The same-frequency LED lighting source construction method is characterized by selecting a same-frequency LED lighting source for lighting according to attributive characteristics of the product surface two-dimensional defects, facilitating detection of the two-dimensional defects including different colors, stains and damages, and enabling the LED lighting sources to instantaneously lighten LED lamp beads. According to the working property that the LED lighting sources can be lightened individually, the LED lamp beads at the corresponding positions are lightened in a mapping control mode, overload can be ensured, the brightness is remarkably improved, anddue to the fact that the power-on time is short, the actual power consumption is low, the heating amount is small, an active heat dissipation component is not needed any more, the overall size is small, field installation of product surface detection is facilitated, pixels of a CCD sensor are synchronously lightened in sequence, the service life is prolonged, the illumination effect is good, theheat dissipation efficiency is high, the accuracy of detection and sampling of the product surface two-dimensional defects is greatly improved, and the same-frequency LED lighting source constructionmethod has good application prospect while the illumination requirement is met.

The invention relates to a function of controlling a power supply of an electric rice cooker by a timer so as to change the electric rice cooker into an intelligent electric rice cooker, a control method and a display function. According to the invention, the electric rice cooker is changed into an intelligent electric rice cooker, the operation is simple, the functions on a display screen are visual, the program requirements for the porridge cooking and soup cooking functions are reasonable, the porridge cooking and soup cooking time is calculated, the electric rice cooker is controlled by controlling the on-off time, and keys are used in a distributed and combined mode.

The invention relates to an ignition device having a power compensation function. The ignition device having the power compensation function comprises an energy conversion circuit, a transformer and an energy storage discharge circuit. The power compensation function is achieved through the energy conversion circuit which specifically comprises a pulse width modulator, an MOS transistor, a sampling resistor, a frequency adjusting capacitor and a frequency adjusting resistor. A pin 7 of the pulse width modulator is connected with the positive electrode of a power source and one end of a primary coil of the transformer. The other end of the primary coil of the transformer is connected with the drain electrode of the MOS transistor. The grid electrode of the MOS transistor is connected with a pin 6 of the pulse width modulator. A pin 3 of the pulse width modulator is connected between the source electrode of the MOS transistor and the sampling resistor. A pin 5 of the pulse width modulator is connected with the negative electrode of the power source. The frequency adjusting resistor is connected between a pin 4 and a pin 8 of the pulse width modulator in series. The frequency adjusting capacitor is connected between the pin 4 of the pulse width modulator and the ground. By the adoption of the ignition device, when the power supply voltage of the power source is reduced, power-on time is prolonged through a field effect transistor till the current reaches a set value so as to compensate for the power lost due to the voltage drop, and the spark frequency output by the ignition device is constant.