10results about How to "Short delay time" patented technology

The invention discloses a relay delay turn-off circuit and a relay control method. The relay delay turn-off circuit comprises a power supply control chip, a micro-control chip, a delay module and a relay driving module. The power supply control chip outputs a first safety signal, the micro-control chip outputs a second safety signal and a control group signal, and the delay module receives the first safety signal, the second safety signal and the control group signal and outputs a first enable signal, a second enable signal and a safety state signal; when the micro-control chip is reset, the first enable signal delays the turn-off action of the relay driving module to preset time and then executes the turn-off action, and the preset time is longer than the reset time of the micro-control chip; and the power supply control chip and the micro-control chip output a first safety signal and a second safety signal according to respective safety states, so that the safety of the delay turn-off circuit of the relay is improved through double safety state judgment.

The invention discloses a method and a device based on Interlanceamp. The invention discloses an infrared detector driving imaging method in a Binning mode. According to the method, a pair of complete image data is generated, a detector needs to carry out integration operation twice, and effective data of different subframes can be generated after each time of integration is completed. Effective data generated by the first integration is a first sub-frame, and the sub-frame is all even-numbered lines of the complete image. Effective data generated after the second integration time is completed are second subframes, and the subframes are all odd-numbered lines of the complete image. According to the method, image data of a first sub-frame and image data of a second sub-frame output by an infrared detector are cached respectively, odd-even row sorting, time sequence recombination processing and the like are carried out on cached effective image data of the first sub-frame and the second sub-frame, and finally a complete image with the size of 640 * 512 is obtained. And the image is finally output through an image format of a camera link interface protocol.

This invention relates to aircraft propulsion systems, specifically to an online real-time monitoring system and method for aircraft solenoid valves and self-locking valves. The system provided by this invention comprises a host computer, valve testing equipment, solenoid valves and / or self-locking valves, a solenoid valve and / or self-locking valve actuator, GNC monitoring equipment, cables, and network cables. The solenoid valve and / or self-locking valve actuator, GNC monitoring equipment, and solenoid valves and / or self-locking valves are connected to the valve testing equipment via cables; the valve testing equipment is connected to the host computer via a network cable. This connection method integrates the valve testing equipment with the solenoid valve and / or self-locking valve control pathways, enabling long-term online real-time monitoring of the solenoid valve and / or self-locking valve's operational characteristics data, eliminating the need for offline, post-processing interpretation. Furthermore, this invention offers advantages such as multiple parallel testing pathways, high time accuracy, long operating time, strong versatility, high real-time performance, strong compatibility, and low latency.

The invention relates to the technical field of driving circuits, in particular to a high-voltage driving integrated circuit for driving a GaN FET, a noise filtering module is arranged on the high-voltage side, and a bootstrap voltage pre-adjusting unit in the noise filtering module is electrically connected between a bootstrap diode DBST and a bootstrap capacitor CBST and used for clamping bootstrap voltage; the pulse unit is used for driving the level shift unit to generate a first pulse voltage and a second pulse voltage; the voltage-to-current unit is used for receiving the first pulse voltage and the second pulse voltage and converting the first pulse voltage and the second pulse voltage into first pulse current and second pulse current respectively; the current-to-voltage unit is used for receiving the first pulse current and the second pulse current and respectively converting the first pulse current and the second pulse current into a first driving voltage and a second driving voltage to drive the RS trigger; the problem that in the process of driving the GaN FET on the high-voltage side, noise filtering efficiency is low, time delay is serious, and the performance of the GaN FET is limited or damaged due to the fact that bootstrap voltage is too large is solved.

The present invention relates to the technical field of loudspeakers, and discloses a loudspeaker micro-unit, including a panel for sound propagation, a U-iron is provided on one end face of the panel, a magnetic sheet is provided inside the U-iron, a frame is provided between the magnetic sheet and the panel, a diaphragm for sound generation is installed inside the frame, and the middle part of the diaphragm is bent in a "V" shape; a sound generation circuit for driving the diaphragm to vibrate is etched on the surface of the diaphragm, and the sound generation circuit includes a first circuit etched on the front face of the diaphragm and a second circuit etched on the back face of the diaphragm, the first circuit and the second circuit are located on both sides of the diaphragm, and are both planar rectangles and distributed in the shape of an Archimedean spiral, and the first circuit and the second circuit are interconnected at the center of the diaphragm. The loudspeaker micro-unit of the present invention has the advantages of small size, sensitive response, low production cost and technical difficulty, and good high sound effect.

The invention discloses an event-driven airborne embedded task application framework design method, which comprises the following steps of: creating an application task thread, and creating a corresponding event signal and a business event queue; creating an auxiliary task thread to carry out application task thread heartbeat management and application timer list management; the task service module generates an application message event by releasing an application buffer message, stores the application message event into a corresponding service event queue and triggers a corresponding event signal; the task service module registers an application timing processing function by creating an application timer and updates the function to an application timer list, after the application timer is started, an auxiliary task thread periodically judges whether the application timer expires or not, and an application timing event is generated when the application timer expires; the application software task thread waits for the event signal, when the event signal is triggered, if the application message event is obtained from the service event queue, application message event processing is executed, and if the application timing event is obtained from the application timer list, application timing event processing is executed.

This invention relates to the field of analog integrated circuit design, specifically to an adaptive comparator delay loop SAR ADC applicable to ultra-high-speed SAR ADCs. Based on the inconsistency in the MSB-LSB setup time within the DAC capacitor array, this invention adjusts the number of adjustable delay stages N in the loop delay module. This allows the comparator to adjust the reset time T for each subsequent comparison after the first comparison. CMP_RST By matching the DAC voltage establishment time, the comparator loop delay is adaptively adjusted to reduce the comparator loop delay time. Depending on the different designs of the delay stages N in the adaptive adjustment module, the time utilization rate can reach 100%. This invention minimizes the comparator loop delay time to the greatest extent while ensuring accurate DAC voltage establishment.

The invention discloses a UPS (Uninterrupted Power Supply) and a power supply circuit thereof. The power supply circuit comprises a first switch module which is controlled by a first control signal and is set to be in a normally open state; the input end of the first switch module receives a first input voltage from a mains supply end and outputs a first output voltage from the output end; the second switch module is controlled by a second control signal and is set to be in a normally open state; the input end of the second switch module receives a second input voltage from the storage battery power supply end and outputs a second output voltage from the output end; the positive electrode of the power diode is connected with the output end of the second switch module, and the negative electrode is connected with the output end of the first switch module and connected to a load power supply end. According to the power supply circuit, when the mains supply input fails and loses voltage, the control signal formed and sent by the main control chip based on real-time monitoring of the mains supply state does not need to be waited, the storage battery power supply can be immediately and automatically connected to the load power supply end, and the delay time of switching from the mains supply power supply to the storage battery power supply in the UPS power supply is greatly shortened.

The present invention discloses a phase-controlled switch design method and related components of a dynamic model system. The scheme is applied to a dynamic model system of a distribution network. After receiving a start signal, when the AC voltage of the fault phase set by the user is detected to pass through the zero point, the conduction of the bidirectional thyristor module connected to the fault phase is controlled after the fault trigger time has passed, so as to realize the grounding of the fault phase. It can be seen that since the conduction time of the thyristor is short, the delay time when controlling the conduction of the bidirectional thyristor module is very short. In addition, the conduction time of the bidirectional thyristor module can be accurately controlled through real-time zero-crossing detection, which further improves the control accuracy of the bidirectional thyristor module, thereby realizing the fault simulation of the dynamic model system of the distribution network.

The present invention provides a dual-pulse solid rocket engine dynamic closed-loop ignition control method and device, which uses a pressure sensor to measure the working pressure of the first-stage engine, and the output signal is monitored by the multi-channel AD on the chip of the DSP after passing through different operational amplifier circuits; when the collected signal drops to a set threshold, the timing starts, and after the set time is reached, the DSP outputs a signal to start the secondary ignition circuit. The present invention has high control accuracy, short delay time, stable operation, simple operation, and can accurately complete the ignition control instruction. Through modular combination, it can also realize dynamic closed-loop ignition control of multi-stage solid rocket engines.